LCOV - code coverage report
Current view: top level - drivers/gpu/drm - drm_connector.c (source / functions) Hit Total Coverage
Test: combined.info Lines: 5 660 0.8 %
Date: 2022-04-01 13:59:58 Functions: 1 57 1.8 %
Branches: 2 323 0.6 %

           Branch data     Line data    Source code
       1                 :            : /*
       2                 :            :  * Copyright (c) 2016 Intel Corporation
       3                 :            :  *
       4                 :            :  * Permission to use, copy, modify, distribute, and sell this software and its
       5                 :            :  * documentation for any purpose is hereby granted without fee, provided that
       6                 :            :  * the above copyright notice appear in all copies and that both that copyright
       7                 :            :  * notice and this permission notice appear in supporting documentation, and
       8                 :            :  * that the name of the copyright holders not be used in advertising or
       9                 :            :  * publicity pertaining to distribution of the software without specific,
      10                 :            :  * written prior permission.  The copyright holders make no representations
      11                 :            :  * about the suitability of this software for any purpose.  It is provided "as
      12                 :            :  * is" without express or implied warranty.
      13                 :            :  *
      14                 :            :  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
      15                 :            :  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
      16                 :            :  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
      17                 :            :  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
      18                 :            :  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
      19                 :            :  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
      20                 :            :  * OF THIS SOFTWARE.
      21                 :            :  */
      22                 :            : 
      23                 :            : #include <drm/drm_connector.h>
      24                 :            : #include <drm/drm_edid.h>
      25                 :            : #include <drm/drm_encoder.h>
      26                 :            : #include <drm/drm_utils.h>
      27                 :            : #include <drm/drm_print.h>
      28                 :            : #include <drm/drm_drv.h>
      29                 :            : #include <drm/drm_file.h>
      30                 :            : 
      31                 :            : #include <linux/uaccess.h>
      32                 :            : 
      33                 :            : #include "drm_crtc_internal.h"
      34                 :            : #include "drm_internal.h"
      35                 :            : 
      36                 :            : /**
      37                 :            :  * DOC: overview
      38                 :            :  *
      39                 :            :  * In DRM connectors are the general abstraction for display sinks, and include
      40                 :            :  * als fixed panels or anything else that can display pixels in some form. As
      41                 :            :  * opposed to all other KMS objects representing hardware (like CRTC, encoder or
      42                 :            :  * plane abstractions) connectors can be hotplugged and unplugged at runtime.
      43                 :            :  * Hence they are reference-counted using drm_connector_get() and
      44                 :            :  * drm_connector_put().
      45                 :            :  *
      46                 :            :  * KMS driver must create, initialize, register and attach at a &struct
      47                 :            :  * drm_connector for each such sink. The instance is created as other KMS
      48                 :            :  * objects and initialized by setting the following fields. The connector is
      49                 :            :  * initialized with a call to drm_connector_init() with a pointer to the
      50                 :            :  * &struct drm_connector_funcs and a connector type, and then exposed to
      51                 :            :  * userspace with a call to drm_connector_register().
      52                 :            :  *
      53                 :            :  * Connectors must be attached to an encoder to be used. For devices that map
      54                 :            :  * connectors to encoders 1:1, the connector should be attached at
      55                 :            :  * initialization time with a call to drm_connector_attach_encoder(). The
      56                 :            :  * driver must also set the &drm_connector.encoder field to point to the
      57                 :            :  * attached encoder.
      58                 :            :  *
      59                 :            :  * For connectors which are not fixed (like built-in panels) the driver needs to
      60                 :            :  * support hotplug notifications. The simplest way to do that is by using the
      61                 :            :  * probe helpers, see drm_kms_helper_poll_init() for connectors which don't have
      62                 :            :  * hardware support for hotplug interrupts. Connectors with hardware hotplug
      63                 :            :  * support can instead use e.g. drm_helper_hpd_irq_event().
      64                 :            :  */
      65                 :            : 
      66                 :            : struct drm_conn_prop_enum_list {
      67                 :            :         int type;
      68                 :            :         const char *name;
      69                 :            :         struct ida ida;
      70                 :            : };
      71                 :            : 
      72                 :            : /*
      73                 :            :  * Connector and encoder types.
      74                 :            :  */
      75                 :            : static struct drm_conn_prop_enum_list drm_connector_enum_list[] = {
      76                 :            :         { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
      77                 :            :         { DRM_MODE_CONNECTOR_VGA, "VGA" },
      78                 :            :         { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
      79                 :            :         { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
      80                 :            :         { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
      81                 :            :         { DRM_MODE_CONNECTOR_Composite, "Composite" },
      82                 :            :         { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
      83                 :            :         { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
      84                 :            :         { DRM_MODE_CONNECTOR_Component, "Component" },
      85                 :            :         { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
      86                 :            :         { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
      87                 :            :         { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
      88                 :            :         { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
      89                 :            :         { DRM_MODE_CONNECTOR_TV, "TV" },
      90                 :            :         { DRM_MODE_CONNECTOR_eDP, "eDP" },
      91                 :            :         { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
      92                 :            :         { DRM_MODE_CONNECTOR_DSI, "DSI" },
      93                 :            :         { DRM_MODE_CONNECTOR_DPI, "DPI" },
      94                 :            :         { DRM_MODE_CONNECTOR_WRITEBACK, "Writeback" },
      95                 :            :         { DRM_MODE_CONNECTOR_SPI, "SPI" },
      96                 :            : };
      97                 :            : 
      98                 :         78 : void drm_connector_ida_init(void)
      99                 :            : {
     100                 :         78 :         int i;
     101                 :            : 
     102         [ +  + ]:       1638 :         for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
     103                 :       1560 :                 ida_init(&drm_connector_enum_list[i].ida);
     104                 :         78 : }
     105                 :            : 
     106                 :          0 : void drm_connector_ida_destroy(void)
     107                 :            : {
     108                 :          0 :         int i;
     109                 :            : 
     110         [ #  # ]:          0 :         for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
     111                 :          0 :                 ida_destroy(&drm_connector_enum_list[i].ida);
     112                 :          0 : }
     113                 :            : 
     114                 :            : /**
     115                 :            :  * drm_connector_get_cmdline_mode - reads the user's cmdline mode
     116                 :            :  * @connector: connector to quwery
     117                 :            :  *
     118                 :            :  * The kernel supports per-connector configuration of its consoles through
     119                 :            :  * use of the video= parameter. This function parses that option and
     120                 :            :  * extracts the user's specified mode (or enable/disable status) for a
     121                 :            :  * particular connector. This is typically only used during the early fbdev
     122                 :            :  * setup.
     123                 :            :  */
     124                 :          0 : static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
     125                 :            : {
     126                 :          0 :         struct drm_cmdline_mode *mode = &connector->cmdline_mode;
     127                 :          0 :         char *option = NULL;
     128                 :            : 
     129         [ #  # ]:          0 :         if (fb_get_options(connector->name, &option))
     130                 :          0 :                 return;
     131                 :            : 
     132         [ #  # ]:          0 :         if (!drm_mode_parse_command_line_for_connector(option,
     133                 :            :                                                        connector,
     134                 :            :                                                        mode))
     135                 :            :                 return;
     136                 :            : 
     137         [ #  # ]:          0 :         if (mode->force) {
     138                 :          0 :                 DRM_INFO("forcing %s connector %s\n", connector->name,
     139                 :            :                          drm_get_connector_force_name(mode->force));
     140                 :          0 :                 connector->force = mode->force;
     141                 :            :         }
     142                 :            : 
     143   [ #  #  #  #  :          0 :         DRM_DEBUG_KMS("cmdline mode for connector %s %s %dx%d@%dHz%s%s%s\n",
             #  #  #  # ]
     144                 :            :                       connector->name, mode->name,
     145                 :            :                       mode->xres, mode->yres,
     146                 :            :                       mode->refresh_specified ? mode->refresh : 60,
     147                 :            :                       mode->rb ? " reduced blanking" : "",
     148                 :            :                       mode->margins ? " with margins" : "",
     149                 :            :                       mode->interlace ?  " interlaced" : "");
     150                 :            : }
     151                 :            : 
     152                 :          0 : static void drm_connector_free(struct kref *kref)
     153                 :            : {
     154                 :          0 :         struct drm_connector *connector =
     155                 :          0 :                 container_of(kref, struct drm_connector, base.refcount);
     156                 :          0 :         struct drm_device *dev = connector->dev;
     157                 :            : 
     158                 :          0 :         drm_mode_object_unregister(dev, &connector->base);
     159                 :          0 :         connector->funcs->destroy(connector);
     160                 :          0 : }
     161                 :            : 
     162                 :          0 : void drm_connector_free_work_fn(struct work_struct *work)
     163                 :            : {
     164                 :          0 :         struct drm_connector *connector, *n;
     165                 :          0 :         struct drm_device *dev =
     166                 :          0 :                 container_of(work, struct drm_device, mode_config.connector_free_work);
     167                 :          0 :         struct drm_mode_config *config = &dev->mode_config;
     168                 :          0 :         unsigned long flags;
     169                 :          0 :         struct llist_node *freed;
     170                 :            : 
     171                 :          0 :         spin_lock_irqsave(&config->connector_list_lock, flags);
     172                 :          0 :         freed = llist_del_all(&config->connector_free_list);
     173                 :          0 :         spin_unlock_irqrestore(&config->connector_list_lock, flags);
     174                 :            : 
     175         [ #  # ]:          0 :         llist_for_each_entry_safe(connector, n, freed, free_node) {
     176                 :          0 :                 drm_mode_object_unregister(dev, &connector->base);
     177                 :          0 :                 connector->funcs->destroy(connector);
     178                 :            :         }
     179                 :          0 : }
     180                 :            : 
     181                 :            : /**
     182                 :            :  * drm_connector_init - Init a preallocated connector
     183                 :            :  * @dev: DRM device
     184                 :            :  * @connector: the connector to init
     185                 :            :  * @funcs: callbacks for this connector
     186                 :            :  * @connector_type: user visible type of the connector
     187                 :            :  *
     188                 :            :  * Initialises a preallocated connector. Connectors should be
     189                 :            :  * subclassed as part of driver connector objects.
     190                 :            :  *
     191                 :            :  * Returns:
     192                 :            :  * Zero on success, error code on failure.
     193                 :            :  */
     194                 :          0 : int drm_connector_init(struct drm_device *dev,
     195                 :            :                        struct drm_connector *connector,
     196                 :            :                        const struct drm_connector_funcs *funcs,
     197                 :            :                        int connector_type)
     198                 :            : {
     199                 :          0 :         struct drm_mode_config *config = &dev->mode_config;
     200                 :          0 :         int ret;
     201                 :          0 :         struct ida *connector_ida =
     202                 :            :                 &drm_connector_enum_list[connector_type].ida;
     203                 :            : 
     204   [ #  #  #  #  :          0 :         WARN_ON(drm_drv_uses_atomic_modeset(dev) &&
          #  #  #  #  #  
                      # ]
     205                 :            :                 (!funcs->atomic_destroy_state ||
     206                 :            :                  !funcs->atomic_duplicate_state));
     207                 :            : 
     208                 :          0 :         ret = __drm_mode_object_add(dev, &connector->base,
     209                 :            :                                     DRM_MODE_OBJECT_CONNECTOR,
     210                 :            :                                     false, drm_connector_free);
     211         [ #  # ]:          0 :         if (ret)
     212                 :            :                 return ret;
     213                 :            : 
     214                 :          0 :         connector->base.properties = &connector->properties;
     215                 :          0 :         connector->dev = dev;
     216                 :          0 :         connector->funcs = funcs;
     217                 :            : 
     218                 :            :         /* connector index is used with 32bit bitmasks */
     219                 :          0 :         ret = ida_simple_get(&config->connector_ida, 0, 32, GFP_KERNEL);
     220         [ #  # ]:          0 :         if (ret < 0) {
     221                 :          0 :                 DRM_DEBUG_KMS("Failed to allocate %s connector index: %d\n",
     222                 :            :                               drm_connector_enum_list[connector_type].name,
     223                 :            :                               ret);
     224                 :          0 :                 goto out_put;
     225                 :            :         }
     226                 :          0 :         connector->index = ret;
     227                 :          0 :         ret = 0;
     228                 :            : 
     229                 :          0 :         connector->connector_type = connector_type;
     230                 :          0 :         connector->connector_type_id =
     231                 :          0 :                 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
     232         [ #  # ]:          0 :         if (connector->connector_type_id < 0) {
     233                 :          0 :                 ret = connector->connector_type_id;
     234                 :          0 :                 goto out_put_id;
     235                 :            :         }
     236                 :          0 :         connector->name =
     237                 :          0 :                 kasprintf(GFP_KERNEL, "%s-%d",
     238                 :            :                           drm_connector_enum_list[connector_type].name,
     239                 :            :                           connector->connector_type_id);
     240         [ #  # ]:          0 :         if (!connector->name) {
     241                 :          0 :                 ret = -ENOMEM;
     242                 :          0 :                 goto out_put_type_id;
     243                 :            :         }
     244                 :            : 
     245                 :          0 :         INIT_LIST_HEAD(&connector->probed_modes);
     246                 :          0 :         INIT_LIST_HEAD(&connector->modes);
     247                 :          0 :         mutex_init(&connector->mutex);
     248                 :          0 :         connector->edid_blob_ptr = NULL;
     249                 :          0 :         connector->tile_blob_ptr = NULL;
     250                 :          0 :         connector->status = connector_status_unknown;
     251                 :          0 :         connector->display_info.panel_orientation =
     252                 :            :                 DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
     253                 :            : 
     254                 :          0 :         drm_connector_get_cmdline_mode(connector);
     255                 :            : 
     256                 :            :         /* We should add connectors at the end to avoid upsetting the connector
     257                 :            :          * index too much. */
     258                 :          0 :         spin_lock_irq(&config->connector_list_lock);
     259                 :          0 :         list_add_tail(&connector->head, &config->connector_list);
     260                 :          0 :         config->num_connector++;
     261                 :          0 :         spin_unlock_irq(&config->connector_list_lock);
     262                 :            : 
     263                 :          0 :         if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL &&
     264         [ #  # ]:          0 :             connector_type != DRM_MODE_CONNECTOR_WRITEBACK)
     265                 :          0 :                 drm_connector_attach_edid_property(connector);
     266                 :            : 
     267                 :          0 :         drm_object_attach_property(&connector->base,
     268                 :            :                                       config->dpms_property, 0);
     269                 :            : 
     270                 :          0 :         drm_object_attach_property(&connector->base,
     271                 :            :                                    config->link_status_property,
     272                 :            :                                    0);
     273                 :            : 
     274                 :          0 :         drm_object_attach_property(&connector->base,
     275                 :            :                                    config->non_desktop_property,
     276                 :            :                                    0);
     277                 :          0 :         drm_object_attach_property(&connector->base,
     278                 :            :                                    config->tile_property,
     279                 :            :                                    0);
     280                 :            : 
     281         [ #  # ]:          0 :         if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
     282                 :          0 :                 drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
     283                 :            :         }
     284                 :            : 
     285                 :          0 :         connector->debugfs_entry = NULL;
     286                 :            : out_put_type_id:
     287                 :          0 :         if (ret)
     288                 :          0 :                 ida_simple_remove(connector_ida, connector->connector_type_id);
     289                 :          0 : out_put_id:
     290         [ #  # ]:          0 :         if (ret)
     291                 :          0 :                 ida_simple_remove(&config->connector_ida, connector->index);
     292                 :          0 : out_put:
     293         [ #  # ]:          0 :         if (ret)
     294                 :          0 :                 drm_mode_object_unregister(dev, &connector->base);
     295                 :            : 
     296                 :            :         return ret;
     297                 :            : }
     298                 :            : EXPORT_SYMBOL(drm_connector_init);
     299                 :            : 
     300                 :            : /**
     301                 :            :  * drm_connector_init_with_ddc - Init a preallocated connector
     302                 :            :  * @dev: DRM device
     303                 :            :  * @connector: the connector to init
     304                 :            :  * @funcs: callbacks for this connector
     305                 :            :  * @connector_type: user visible type of the connector
     306                 :            :  * @ddc: pointer to the associated ddc adapter
     307                 :            :  *
     308                 :            :  * Initialises a preallocated connector. Connectors should be
     309                 :            :  * subclassed as part of driver connector objects.
     310                 :            :  *
     311                 :            :  * Ensures that the ddc field of the connector is correctly set.
     312                 :            :  *
     313                 :            :  * Returns:
     314                 :            :  * Zero on success, error code on failure.
     315                 :            :  */
     316                 :          0 : int drm_connector_init_with_ddc(struct drm_device *dev,
     317                 :            :                                 struct drm_connector *connector,
     318                 :            :                                 const struct drm_connector_funcs *funcs,
     319                 :            :                                 int connector_type,
     320                 :            :                                 struct i2c_adapter *ddc)
     321                 :            : {
     322                 :          0 :         int ret;
     323                 :            : 
     324                 :          0 :         ret = drm_connector_init(dev, connector, funcs, connector_type);
     325         [ #  # ]:          0 :         if (ret)
     326                 :            :                 return ret;
     327                 :            : 
     328                 :            :         /* provide ddc symlink in sysfs */
     329                 :          0 :         connector->ddc = ddc;
     330                 :            : 
     331                 :          0 :         return ret;
     332                 :            : }
     333                 :            : EXPORT_SYMBOL(drm_connector_init_with_ddc);
     334                 :            : 
     335                 :            : /**
     336                 :            :  * drm_connector_attach_edid_property - attach edid property.
     337                 :            :  * @connector: the connector
     338                 :            :  *
     339                 :            :  * Some connector types like DRM_MODE_CONNECTOR_VIRTUAL do not get a
     340                 :            :  * edid property attached by default.  This function can be used to
     341                 :            :  * explicitly enable the edid property in these cases.
     342                 :            :  */
     343                 :          0 : void drm_connector_attach_edid_property(struct drm_connector *connector)
     344                 :            : {
     345                 :          0 :         struct drm_mode_config *config = &connector->dev->mode_config;
     346                 :            : 
     347                 :          0 :         drm_object_attach_property(&connector->base,
     348                 :            :                                    config->edid_property,
     349                 :            :                                    0);
     350                 :          0 : }
     351                 :            : EXPORT_SYMBOL(drm_connector_attach_edid_property);
     352                 :            : 
     353                 :            : /**
     354                 :            :  * drm_connector_attach_encoder - attach a connector to an encoder
     355                 :            :  * @connector: connector to attach
     356                 :            :  * @encoder: encoder to attach @connector to
     357                 :            :  *
     358                 :            :  * This function links up a connector to an encoder. Note that the routing
     359                 :            :  * restrictions between encoders and crtcs are exposed to userspace through the
     360                 :            :  * possible_clones and possible_crtcs bitmasks.
     361                 :            :  *
     362                 :            :  * Returns:
     363                 :            :  * Zero on success, negative errno on failure.
     364                 :            :  */
     365                 :          0 : int drm_connector_attach_encoder(struct drm_connector *connector,
     366                 :            :                                  struct drm_encoder *encoder)
     367                 :            : {
     368                 :            :         /*
     369                 :            :          * In the past, drivers have attempted to model the static association
     370                 :            :          * of connector to encoder in simple connector/encoder devices using a
     371                 :            :          * direct assignment of connector->encoder = encoder. This connection
     372                 :            :          * is a logical one and the responsibility of the core, so drivers are
     373                 :            :          * expected not to mess with this.
     374                 :            :          *
     375                 :            :          * Note that the error return should've been enough here, but a large
     376                 :            :          * majority of drivers ignores the return value, so add in a big WARN
     377                 :            :          * to get people's attention.
     378                 :            :          */
     379   [ #  #  #  # ]:          0 :         if (WARN_ON(connector->encoder))
     380                 :            :                 return -EINVAL;
     381                 :            : 
     382                 :          0 :         connector->possible_encoders |= drm_encoder_mask(encoder);
     383                 :            : 
     384                 :          0 :         return 0;
     385                 :            : }
     386                 :            : EXPORT_SYMBOL(drm_connector_attach_encoder);
     387                 :            : 
     388                 :            : /**
     389                 :            :  * drm_connector_has_possible_encoder - check if the connector and encoder are
     390                 :            :  * associated with each other
     391                 :            :  * @connector: the connector
     392                 :            :  * @encoder: the encoder
     393                 :            :  *
     394                 :            :  * Returns:
     395                 :            :  * True if @encoder is one of the possible encoders for @connector.
     396                 :            :  */
     397                 :          0 : bool drm_connector_has_possible_encoder(struct drm_connector *connector,
     398                 :            :                                         struct drm_encoder *encoder)
     399                 :            : {
     400                 :          0 :         return connector->possible_encoders & drm_encoder_mask(encoder);
     401                 :            : }
     402                 :            : EXPORT_SYMBOL(drm_connector_has_possible_encoder);
     403                 :            : 
     404                 :          0 : static void drm_mode_remove(struct drm_connector *connector,
     405                 :            :                             struct drm_display_mode *mode)
     406                 :            : {
     407                 :          0 :         list_del(&mode->head);
     408                 :          0 :         drm_mode_destroy(connector->dev, mode);
     409                 :            : }
     410                 :            : 
     411                 :            : /**
     412                 :            :  * drm_connector_cleanup - cleans up an initialised connector
     413                 :            :  * @connector: connector to cleanup
     414                 :            :  *
     415                 :            :  * Cleans up the connector but doesn't free the object.
     416                 :            :  */
     417                 :          0 : void drm_connector_cleanup(struct drm_connector *connector)
     418                 :            : {
     419                 :          0 :         struct drm_device *dev = connector->dev;
     420                 :          0 :         struct drm_display_mode *mode, *t;
     421                 :            : 
     422                 :            :         /* The connector should have been removed from userspace long before
     423                 :            :          * it is finally destroyed.
     424                 :            :          */
     425   [ #  #  #  # ]:          0 :         if (WARN_ON(connector->registration_state ==
     426                 :            :                     DRM_CONNECTOR_REGISTERED))
     427                 :          0 :                 drm_connector_unregister(connector);
     428                 :            : 
     429         [ #  # ]:          0 :         if (connector->tile_group) {
     430                 :          0 :                 drm_mode_put_tile_group(dev, connector->tile_group);
     431                 :          0 :                 connector->tile_group = NULL;
     432                 :            :         }
     433                 :            : 
     434         [ #  # ]:          0 :         list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
     435                 :          0 :                 drm_mode_remove(connector, mode);
     436                 :            : 
     437         [ #  # ]:          0 :         list_for_each_entry_safe(mode, t, &connector->modes, head)
     438                 :          0 :                 drm_mode_remove(connector, mode);
     439                 :            : 
     440                 :          0 :         ida_simple_remove(&drm_connector_enum_list[connector->connector_type].ida,
     441                 :            :                           connector->connector_type_id);
     442                 :            : 
     443                 :          0 :         ida_simple_remove(&dev->mode_config.connector_ida,
     444                 :            :                           connector->index);
     445                 :            : 
     446                 :          0 :         kfree(connector->display_info.bus_formats);
     447                 :          0 :         drm_mode_object_unregister(dev, &connector->base);
     448                 :          0 :         kfree(connector->name);
     449                 :          0 :         connector->name = NULL;
     450                 :          0 :         spin_lock_irq(&dev->mode_config.connector_list_lock);
     451                 :          0 :         list_del(&connector->head);
     452                 :          0 :         dev->mode_config.num_connector--;
     453                 :          0 :         spin_unlock_irq(&dev->mode_config.connector_list_lock);
     454                 :            : 
     455   [ #  #  #  #  :          0 :         WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
                   #  # ]
     456   [ #  #  #  # ]:          0 :         if (connector->state && connector->funcs->atomic_destroy_state)
     457                 :          0 :                 connector->funcs->atomic_destroy_state(connector,
     458                 :            :                                                        connector->state);
     459                 :            : 
     460                 :          0 :         mutex_destroy(&connector->mutex);
     461                 :            : 
     462                 :          0 :         memset(connector, 0, sizeof(*connector));
     463                 :          0 : }
     464                 :            : EXPORT_SYMBOL(drm_connector_cleanup);
     465                 :            : 
     466                 :            : /**
     467                 :            :  * drm_connector_register - register a connector
     468                 :            :  * @connector: the connector to register
     469                 :            :  *
     470                 :            :  * Register userspace interfaces for a connector. Only call this for connectors
     471                 :            :  * which can be hotplugged after drm_dev_register() has been called already,
     472                 :            :  * e.g. DP MST connectors. All other connectors will be registered automatically
     473                 :            :  * when calling drm_dev_register().
     474                 :            :  *
     475                 :            :  * Returns:
     476                 :            :  * Zero on success, error code on failure.
     477                 :            :  */
     478                 :          0 : int drm_connector_register(struct drm_connector *connector)
     479                 :            : {
     480                 :          0 :         int ret = 0;
     481                 :            : 
     482         [ #  # ]:          0 :         if (!connector->dev->registered)
     483                 :            :                 return 0;
     484                 :            : 
     485                 :          0 :         mutex_lock(&connector->mutex);
     486         [ #  # ]:          0 :         if (connector->registration_state != DRM_CONNECTOR_INITIALIZING)
     487                 :          0 :                 goto unlock;
     488                 :            : 
     489                 :          0 :         ret = drm_sysfs_connector_add(connector);
     490         [ #  # ]:          0 :         if (ret)
     491                 :          0 :                 goto unlock;
     492                 :            : 
     493                 :          0 :         drm_debugfs_connector_add(connector);
     494                 :            : 
     495         [ #  # ]:          0 :         if (connector->funcs->late_register) {
     496                 :          0 :                 ret = connector->funcs->late_register(connector);
     497         [ #  # ]:          0 :                 if (ret)
     498                 :          0 :                         goto err_debugfs;
     499                 :            :         }
     500                 :            : 
     501                 :          0 :         drm_mode_object_register(connector->dev, &connector->base);
     502                 :            : 
     503                 :          0 :         connector->registration_state = DRM_CONNECTOR_REGISTERED;
     504                 :          0 :         goto unlock;
     505                 :            : 
     506                 :            : err_debugfs:
     507                 :          0 :         drm_debugfs_connector_remove(connector);
     508                 :          0 :         drm_sysfs_connector_remove(connector);
     509                 :          0 : unlock:
     510                 :          0 :         mutex_unlock(&connector->mutex);
     511                 :          0 :         return ret;
     512                 :            : }
     513                 :            : EXPORT_SYMBOL(drm_connector_register);
     514                 :            : 
     515                 :            : /**
     516                 :            :  * drm_connector_unregister - unregister a connector
     517                 :            :  * @connector: the connector to unregister
     518                 :            :  *
     519                 :            :  * Unregister userspace interfaces for a connector. Only call this for
     520                 :            :  * connectors which have registered explicitly by calling drm_dev_register(),
     521                 :            :  * since connectors are unregistered automatically when drm_dev_unregister() is
     522                 :            :  * called.
     523                 :            :  */
     524                 :          0 : void drm_connector_unregister(struct drm_connector *connector)
     525                 :            : {
     526                 :          0 :         mutex_lock(&connector->mutex);
     527         [ #  # ]:          0 :         if (connector->registration_state != DRM_CONNECTOR_REGISTERED) {
     528                 :          0 :                 mutex_unlock(&connector->mutex);
     529                 :          0 :                 return;
     530                 :            :         }
     531                 :            : 
     532         [ #  # ]:          0 :         if (connector->funcs->early_unregister)
     533                 :          0 :                 connector->funcs->early_unregister(connector);
     534                 :            : 
     535                 :          0 :         drm_sysfs_connector_remove(connector);
     536                 :          0 :         drm_debugfs_connector_remove(connector);
     537                 :            : 
     538                 :          0 :         connector->registration_state = DRM_CONNECTOR_UNREGISTERED;
     539                 :          0 :         mutex_unlock(&connector->mutex);
     540                 :            : }
     541                 :            : EXPORT_SYMBOL(drm_connector_unregister);
     542                 :            : 
     543                 :          0 : void drm_connector_unregister_all(struct drm_device *dev)
     544                 :            : {
     545                 :          0 :         struct drm_connector *connector;
     546                 :          0 :         struct drm_connector_list_iter conn_iter;
     547                 :            : 
     548                 :          0 :         drm_connector_list_iter_begin(dev, &conn_iter);
     549         [ #  # ]:          0 :         drm_for_each_connector_iter(connector, &conn_iter)
     550                 :          0 :                 drm_connector_unregister(connector);
     551                 :          0 :         drm_connector_list_iter_end(&conn_iter);
     552                 :          0 : }
     553                 :            : 
     554                 :          0 : int drm_connector_register_all(struct drm_device *dev)
     555                 :            : {
     556                 :          0 :         struct drm_connector *connector;
     557                 :          0 :         struct drm_connector_list_iter conn_iter;
     558                 :          0 :         int ret = 0;
     559                 :            : 
     560                 :          0 :         drm_connector_list_iter_begin(dev, &conn_iter);
     561         [ #  # ]:          0 :         drm_for_each_connector_iter(connector, &conn_iter) {
     562                 :          0 :                 ret = drm_connector_register(connector);
     563         [ #  # ]:          0 :                 if (ret)
     564                 :            :                         break;
     565                 :            :         }
     566                 :          0 :         drm_connector_list_iter_end(&conn_iter);
     567                 :            : 
     568         [ #  # ]:          0 :         if (ret)
     569                 :          0 :                 drm_connector_unregister_all(dev);
     570                 :          0 :         return ret;
     571                 :            : }
     572                 :            : 
     573                 :            : /**
     574                 :            :  * drm_get_connector_status_name - return a string for connector status
     575                 :            :  * @status: connector status to compute name of
     576                 :            :  *
     577                 :            :  * In contrast to the other drm_get_*_name functions this one here returns a
     578                 :            :  * const pointer and hence is threadsafe.
     579                 :            :  */
     580                 :          0 : const char *drm_get_connector_status_name(enum drm_connector_status status)
     581                 :            : {
     582         [ #  # ]:          0 :         if (status == connector_status_connected)
     583                 :            :                 return "connected";
     584         [ #  # ]:          0 :         else if (status == connector_status_disconnected)
     585                 :            :                 return "disconnected";
     586                 :            :         else
     587                 :          0 :                 return "unknown";
     588                 :            : }
     589                 :            : EXPORT_SYMBOL(drm_get_connector_status_name);
     590                 :            : 
     591                 :            : /**
     592                 :            :  * drm_get_connector_force_name - return a string for connector force
     593                 :            :  * @force: connector force to get name of
     594                 :            :  *
     595                 :            :  * Returns: const pointer to name.
     596                 :            :  */
     597                 :          0 : const char *drm_get_connector_force_name(enum drm_connector_force force)
     598                 :            : {
     599   [ #  #  #  # ]:          0 :         switch (force) {
     600                 :            :         case DRM_FORCE_UNSPECIFIED:
     601                 :            :                 return "unspecified";
     602                 :            :         case DRM_FORCE_OFF:
     603                 :            :                 return "off";
     604                 :            :         case DRM_FORCE_ON:
     605                 :            :                 return "on";
     606                 :            :         case DRM_FORCE_ON_DIGITAL:
     607                 :            :                 return "digital";
     608                 :            :         default:
     609                 :            :                 return "unknown";
     610                 :            :         }
     611                 :            : }
     612                 :            : 
     613                 :            : #ifdef CONFIG_LOCKDEP
     614                 :            : static struct lockdep_map connector_list_iter_dep_map = {
     615                 :            :         .name = "drm_connector_list_iter"
     616                 :            : };
     617                 :            : #endif
     618                 :            : 
     619                 :            : /**
     620                 :            :  * drm_connector_list_iter_begin - initialize a connector_list iterator
     621                 :            :  * @dev: DRM device
     622                 :            :  * @iter: connector_list iterator
     623                 :            :  *
     624                 :            :  * Sets @iter up to walk the &drm_mode_config.connector_list of @dev. @iter
     625                 :            :  * must always be cleaned up again by calling drm_connector_list_iter_end().
     626                 :            :  * Iteration itself happens using drm_connector_list_iter_next() or
     627                 :            :  * drm_for_each_connector_iter().
     628                 :            :  */
     629                 :          0 : void drm_connector_list_iter_begin(struct drm_device *dev,
     630                 :            :                                    struct drm_connector_list_iter *iter)
     631                 :            : {
     632                 :          0 :         iter->dev = dev;
     633                 :          0 :         iter->conn = NULL;
     634                 :          0 :         lock_acquire_shared_recursive(&connector_list_iter_dep_map, 0, 1, NULL, _RET_IP_);
     635                 :          0 : }
     636                 :            : EXPORT_SYMBOL(drm_connector_list_iter_begin);
     637                 :            : 
     638                 :            : /*
     639                 :            :  * Extra-safe connector put function that works in any context. Should only be
     640                 :            :  * used from the connector_iter functions, where we never really expect to
     641                 :            :  * actually release the connector when dropping our final reference.
     642                 :            :  */
     643                 :            : static void
     644                 :          0 : __drm_connector_put_safe(struct drm_connector *conn)
     645                 :            : {
     646                 :          0 :         struct drm_mode_config *config = &conn->dev->mode_config;
     647                 :            : 
     648                 :          0 :         lockdep_assert_held(&config->connector_list_lock);
     649                 :            : 
     650         [ #  # ]:          0 :         if (!refcount_dec_and_test(&conn->base.refcount.refcount))
     651                 :            :                 return;
     652                 :            : 
     653                 :          0 :         llist_add(&conn->free_node, &config->connector_free_list);
     654                 :          0 :         schedule_work(&config->connector_free_work);
     655                 :            : }
     656                 :            : 
     657                 :            : /**
     658                 :            :  * drm_connector_list_iter_next - return next connector
     659                 :            :  * @iter: connector_list iterator
     660                 :            :  *
     661                 :            :  * Returns the next connector for @iter, or NULL when the list walk has
     662                 :            :  * completed.
     663                 :            :  */
     664                 :            : struct drm_connector *
     665                 :          0 : drm_connector_list_iter_next(struct drm_connector_list_iter *iter)
     666                 :            : {
     667                 :          0 :         struct drm_connector *old_conn = iter->conn;
     668                 :          0 :         struct drm_mode_config *config = &iter->dev->mode_config;
     669                 :          0 :         struct list_head *lhead;
     670                 :          0 :         unsigned long flags;
     671                 :            : 
     672                 :          0 :         spin_lock_irqsave(&config->connector_list_lock, flags);
     673         [ #  # ]:          0 :         lhead = old_conn ? &old_conn->head : &config->connector_list;
     674                 :            : 
     675                 :          0 :         do {
     676         [ #  # ]:          0 :                 if (lhead->next == &config->connector_list) {
     677                 :          0 :                         iter->conn = NULL;
     678                 :          0 :                         break;
     679                 :            :                 }
     680                 :            : 
     681                 :          0 :                 lhead = lhead->next;
     682                 :          0 :                 iter->conn = list_entry(lhead, struct drm_connector, head);
     683                 :            : 
     684                 :            :                 /* loop until it's not a zombie connector */
     685         [ #  # ]:          0 :         } while (!kref_get_unless_zero(&iter->conn->base.refcount));
     686                 :            : 
     687         [ #  # ]:          0 :         if (old_conn)
     688                 :          0 :                 __drm_connector_put_safe(old_conn);
     689                 :          0 :         spin_unlock_irqrestore(&config->connector_list_lock, flags);
     690                 :            : 
     691                 :          0 :         return iter->conn;
     692                 :            : }
     693                 :            : EXPORT_SYMBOL(drm_connector_list_iter_next);
     694                 :            : 
     695                 :            : /**
     696                 :            :  * drm_connector_list_iter_end - tear down a connector_list iterator
     697                 :            :  * @iter: connector_list iterator
     698                 :            :  *
     699                 :            :  * Tears down @iter and releases any resources (like &drm_connector references)
     700                 :            :  * acquired while walking the list. This must always be called, both when the
     701                 :            :  * iteration completes fully or when it was aborted without walking the entire
     702                 :            :  * list.
     703                 :            :  */
     704                 :          0 : void drm_connector_list_iter_end(struct drm_connector_list_iter *iter)
     705                 :            : {
     706                 :          0 :         struct drm_mode_config *config = &iter->dev->mode_config;
     707                 :          0 :         unsigned long flags;
     708                 :            : 
     709                 :          0 :         iter->dev = NULL;
     710         [ #  # ]:          0 :         if (iter->conn) {
     711                 :          0 :                 spin_lock_irqsave(&config->connector_list_lock, flags);
     712                 :          0 :                 __drm_connector_put_safe(iter->conn);
     713                 :          0 :                 spin_unlock_irqrestore(&config->connector_list_lock, flags);
     714                 :            :         }
     715                 :          0 :         lock_release(&connector_list_iter_dep_map, _RET_IP_);
     716                 :          0 : }
     717                 :            : EXPORT_SYMBOL(drm_connector_list_iter_end);
     718                 :            : 
     719                 :            : static const struct drm_prop_enum_list drm_subpixel_enum_list[] = {
     720                 :            :         { SubPixelUnknown, "Unknown" },
     721                 :            :         { SubPixelHorizontalRGB, "Horizontal RGB" },
     722                 :            :         { SubPixelHorizontalBGR, "Horizontal BGR" },
     723                 :            :         { SubPixelVerticalRGB, "Vertical RGB" },
     724                 :            :         { SubPixelVerticalBGR, "Vertical BGR" },
     725                 :            :         { SubPixelNone, "None" },
     726                 :            : };
     727                 :            : 
     728                 :            : /**
     729                 :            :  * drm_get_subpixel_order_name - return a string for a given subpixel enum
     730                 :            :  * @order: enum of subpixel_order
     731                 :            :  *
     732                 :            :  * Note you could abuse this and return something out of bounds, but that
     733                 :            :  * would be a caller error.  No unscrubbed user data should make it here.
     734                 :            :  */
     735                 :          0 : const char *drm_get_subpixel_order_name(enum subpixel_order order)
     736                 :            : {
     737                 :          0 :         return drm_subpixel_enum_list[order].name;
     738                 :            : }
     739                 :            : EXPORT_SYMBOL(drm_get_subpixel_order_name);
     740                 :            : 
     741                 :            : static const struct drm_prop_enum_list drm_dpms_enum_list[] = {
     742                 :            :         { DRM_MODE_DPMS_ON, "On" },
     743                 :            :         { DRM_MODE_DPMS_STANDBY, "Standby" },
     744                 :            :         { DRM_MODE_DPMS_SUSPEND, "Suspend" },
     745                 :            :         { DRM_MODE_DPMS_OFF, "Off" }
     746                 :            : };
     747   [ #  #  #  # ]:          0 : DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
     748                 :            : 
     749                 :            : static const struct drm_prop_enum_list drm_link_status_enum_list[] = {
     750                 :            :         { DRM_MODE_LINK_STATUS_GOOD, "Good" },
     751                 :            :         { DRM_MODE_LINK_STATUS_BAD, "Bad" },
     752                 :            : };
     753                 :            : 
     754                 :            : /**
     755                 :            :  * drm_display_info_set_bus_formats - set the supported bus formats
     756                 :            :  * @info: display info to store bus formats in
     757                 :            :  * @formats: array containing the supported bus formats
     758                 :            :  * @num_formats: the number of entries in the fmts array
     759                 :            :  *
     760                 :            :  * Store the supported bus formats in display info structure.
     761                 :            :  * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
     762                 :            :  * a full list of available formats.
     763                 :            :  */
     764                 :          0 : int drm_display_info_set_bus_formats(struct drm_display_info *info,
     765                 :            :                                      const u32 *formats,
     766                 :            :                                      unsigned int num_formats)
     767                 :            : {
     768                 :          0 :         u32 *fmts = NULL;
     769                 :            : 
     770         [ #  # ]:          0 :         if (!formats && num_formats)
     771                 :            :                 return -EINVAL;
     772                 :            : 
     773         [ #  # ]:          0 :         if (formats && num_formats) {
     774                 :          0 :                 fmts = kmemdup(formats, sizeof(*formats) * num_formats,
     775                 :            :                                GFP_KERNEL);
     776         [ #  # ]:          0 :                 if (!fmts)
     777                 :            :                         return -ENOMEM;
     778                 :            :         }
     779                 :            : 
     780                 :          0 :         kfree(info->bus_formats);
     781                 :          0 :         info->bus_formats = fmts;
     782                 :          0 :         info->num_bus_formats = num_formats;
     783                 :            : 
     784                 :          0 :         return 0;
     785                 :            : }
     786                 :            : EXPORT_SYMBOL(drm_display_info_set_bus_formats);
     787                 :            : 
     788                 :            : /* Optional connector properties. */
     789                 :            : static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = {
     790                 :            :         { DRM_MODE_SCALE_NONE, "None" },
     791                 :            :         { DRM_MODE_SCALE_FULLSCREEN, "Full" },
     792                 :            :         { DRM_MODE_SCALE_CENTER, "Center" },
     793                 :            :         { DRM_MODE_SCALE_ASPECT, "Full aspect" },
     794                 :            : };
     795                 :            : 
     796                 :            : static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = {
     797                 :            :         { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" },
     798                 :            :         { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" },
     799                 :            :         { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" },
     800                 :            : };
     801                 :            : 
     802                 :            : static const struct drm_prop_enum_list drm_content_type_enum_list[] = {
     803                 :            :         { DRM_MODE_CONTENT_TYPE_NO_DATA, "No Data" },
     804                 :            :         { DRM_MODE_CONTENT_TYPE_GRAPHICS, "Graphics" },
     805                 :            :         { DRM_MODE_CONTENT_TYPE_PHOTO, "Photo" },
     806                 :            :         { DRM_MODE_CONTENT_TYPE_CINEMA, "Cinema" },
     807                 :            :         { DRM_MODE_CONTENT_TYPE_GAME, "Game" },
     808                 :            : };
     809                 :            : 
     810                 :            : static const struct drm_prop_enum_list drm_panel_orientation_enum_list[] = {
     811                 :            :         { DRM_MODE_PANEL_ORIENTATION_NORMAL,    "Normal"      },
     812                 :            :         { DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP, "Upside Down" },
     813                 :            :         { DRM_MODE_PANEL_ORIENTATION_LEFT_UP,   "Left Side Up"        },
     814                 :            :         { DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,  "Right Side Up"       },
     815                 :            : };
     816                 :            : 
     817                 :            : static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = {
     818                 :            :         { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
     819                 :            :         { DRM_MODE_SUBCONNECTOR_DVID,      "DVI-D"     }, /* DVI-I  */
     820                 :            :         { DRM_MODE_SUBCONNECTOR_DVIA,      "DVI-A"     }, /* DVI-I  */
     821                 :            : };
     822   [ #  #  #  # ]:          0 : DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
     823                 :            : 
     824                 :            : static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = {
     825                 :            :         { DRM_MODE_SUBCONNECTOR_Unknown,   "Unknown"   }, /* DVI-I and TV-out */
     826                 :            :         { DRM_MODE_SUBCONNECTOR_DVID,      "DVI-D"     }, /* DVI-I  */
     827                 :            :         { DRM_MODE_SUBCONNECTOR_DVIA,      "DVI-A"     }, /* DVI-I  */
     828                 :            : };
     829   [ #  #  #  # ]:          0 : DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
     830                 :            :                  drm_dvi_i_subconnector_enum_list)
     831                 :            : 
     832                 :            : static const struct drm_prop_enum_list drm_tv_select_enum_list[] = {
     833                 :            :         { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
     834                 :            :         { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
     835                 :            :         { DRM_MODE_SUBCONNECTOR_SVIDEO,    "SVIDEO"    }, /* TV-out */
     836                 :            :         { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
     837                 :            :         { DRM_MODE_SUBCONNECTOR_SCART,     "SCART"     }, /* TV-out */
     838                 :            : };
     839   [ #  #  #  # ]:          0 : DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
     840                 :            : 
     841                 :            : static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = {
     842                 :            :         { DRM_MODE_SUBCONNECTOR_Unknown,   "Unknown"   }, /* DVI-I and TV-out */
     843                 :            :         { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
     844                 :            :         { DRM_MODE_SUBCONNECTOR_SVIDEO,    "SVIDEO"    }, /* TV-out */
     845                 :            :         { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
     846                 :            :         { DRM_MODE_SUBCONNECTOR_SCART,     "SCART"     }, /* TV-out */
     847                 :            : };
     848   [ #  #  #  # ]:          0 : DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
     849                 :            :                  drm_tv_subconnector_enum_list)
     850                 :            : 
     851                 :            : static const struct drm_prop_enum_list hdmi_colorspaces[] = {
     852                 :            :         /* For Default case, driver will set the colorspace */
     853                 :            :         { DRM_MODE_COLORIMETRY_DEFAULT, "Default" },
     854                 :            :         /* Standard Definition Colorimetry based on CEA 861 */
     855                 :            :         { DRM_MODE_COLORIMETRY_SMPTE_170M_YCC, "SMPTE_170M_YCC" },
     856                 :            :         { DRM_MODE_COLORIMETRY_BT709_YCC, "BT709_YCC" },
     857                 :            :         /* Standard Definition Colorimetry based on IEC 61966-2-4 */
     858                 :            :         { DRM_MODE_COLORIMETRY_XVYCC_601, "XVYCC_601" },
     859                 :            :         /* High Definition Colorimetry based on IEC 61966-2-4 */
     860                 :            :         { DRM_MODE_COLORIMETRY_XVYCC_709, "XVYCC_709" },
     861                 :            :         /* Colorimetry based on IEC 61966-2-1/Amendment 1 */
     862                 :            :         { DRM_MODE_COLORIMETRY_SYCC_601, "SYCC_601" },
     863                 :            :         /* Colorimetry based on IEC 61966-2-5 [33] */
     864                 :            :         { DRM_MODE_COLORIMETRY_OPYCC_601, "opYCC_601" },
     865                 :            :         /* Colorimetry based on IEC 61966-2-5 */
     866                 :            :         { DRM_MODE_COLORIMETRY_OPRGB, "opRGB" },
     867                 :            :         /* Colorimetry based on ITU-R BT.2020 */
     868                 :            :         { DRM_MODE_COLORIMETRY_BT2020_CYCC, "BT2020_CYCC" },
     869                 :            :         /* Colorimetry based on ITU-R BT.2020 */
     870                 :            :         { DRM_MODE_COLORIMETRY_BT2020_RGB, "BT2020_RGB" },
     871                 :            :         /* Colorimetry based on ITU-R BT.2020 */
     872                 :            :         { DRM_MODE_COLORIMETRY_BT2020_YCC, "BT2020_YCC" },
     873                 :            :         /* Added as part of Additional Colorimetry Extension in 861.G */
     874                 :            :         { DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65, "DCI-P3_RGB_D65" },
     875                 :            :         { DRM_MODE_COLORIMETRY_DCI_P3_RGB_THEATER, "DCI-P3_RGB_Theater" },
     876                 :            : };
     877                 :            : 
     878                 :            : /*
     879                 :            :  * As per DP 1.4a spec, 2.2.5.7.5 VSC SDP Payload for Pixel Encoding/Colorimetry
     880                 :            :  * Format Table 2-120
     881                 :            :  */
     882                 :            : static const struct drm_prop_enum_list dp_colorspaces[] = {
     883                 :            :         /* For Default case, driver will set the colorspace */
     884                 :            :         { DRM_MODE_COLORIMETRY_DEFAULT, "Default" },
     885                 :            :         { DRM_MODE_COLORIMETRY_RGB_WIDE_FIXED, "RGB_Wide_Gamut_Fixed_Point" },
     886                 :            :         /* Colorimetry based on scRGB (IEC 61966-2-2) */
     887                 :            :         { DRM_MODE_COLORIMETRY_RGB_WIDE_FLOAT, "RGB_Wide_Gamut_Floating_Point" },
     888                 :            :         /* Colorimetry based on IEC 61966-2-5 */
     889                 :            :         { DRM_MODE_COLORIMETRY_OPRGB, "opRGB" },
     890                 :            :         /* Colorimetry based on SMPTE RP 431-2 */
     891                 :            :         { DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65, "DCI-P3_RGB_D65" },
     892                 :            :         /* Colorimetry based on ITU-R BT.2020 */
     893                 :            :         { DRM_MODE_COLORIMETRY_BT2020_RGB, "BT2020_RGB" },
     894                 :            :         { DRM_MODE_COLORIMETRY_BT601_YCC, "BT601_YCC" },
     895                 :            :         { DRM_MODE_COLORIMETRY_BT709_YCC, "BT709_YCC" },
     896                 :            :         /* Standard Definition Colorimetry based on IEC 61966-2-4 */
     897                 :            :         { DRM_MODE_COLORIMETRY_XVYCC_601, "XVYCC_601" },
     898                 :            :         /* High Definition Colorimetry based on IEC 61966-2-4 */
     899                 :            :         { DRM_MODE_COLORIMETRY_XVYCC_709, "XVYCC_709" },
     900                 :            :         /* Colorimetry based on IEC 61966-2-1/Amendment 1 */
     901                 :            :         { DRM_MODE_COLORIMETRY_SYCC_601, "SYCC_601" },
     902                 :            :         /* Colorimetry based on IEC 61966-2-5 [33] */
     903                 :            :         { DRM_MODE_COLORIMETRY_OPYCC_601, "opYCC_601" },
     904                 :            :         /* Colorimetry based on ITU-R BT.2020 */
     905                 :            :         { DRM_MODE_COLORIMETRY_BT2020_CYCC, "BT2020_CYCC" },
     906                 :            :         /* Colorimetry based on ITU-R BT.2020 */
     907                 :            :         { DRM_MODE_COLORIMETRY_BT2020_YCC, "BT2020_YCC" },
     908                 :            : };
     909                 :            : 
     910                 :            : /**
     911                 :            :  * DOC: standard connector properties
     912                 :            :  *
     913                 :            :  * DRM connectors have a few standardized properties:
     914                 :            :  *
     915                 :            :  * EDID:
     916                 :            :  *      Blob property which contains the current EDID read from the sink. This
     917                 :            :  *      is useful to parse sink identification information like vendor, model
     918                 :            :  *      and serial. Drivers should update this property by calling
     919                 :            :  *      drm_connector_update_edid_property(), usually after having parsed
     920                 :            :  *      the EDID using drm_add_edid_modes(). Userspace cannot change this
     921                 :            :  *      property.
     922                 :            :  * DPMS:
     923                 :            :  *      Legacy property for setting the power state of the connector. For atomic
     924                 :            :  *      drivers this is only provided for backwards compatibility with existing
     925                 :            :  *      drivers, it remaps to controlling the "ACTIVE" property on the CRTC the
     926                 :            :  *      connector is linked to. Drivers should never set this property directly,
     927                 :            :  *      it is handled by the DRM core by calling the &drm_connector_funcs.dpms
     928                 :            :  *      callback. For atomic drivers the remapping to the "ACTIVE" property is
     929                 :            :  *      implemented in the DRM core.  This is the only standard connector
     930                 :            :  *      property that userspace can change.
     931                 :            :  *
     932                 :            :  *      Note that this property cannot be set through the MODE_ATOMIC ioctl,
     933                 :            :  *      userspace must use "ACTIVE" on the CRTC instead.
     934                 :            :  *
     935                 :            :  *      WARNING:
     936                 :            :  *
     937                 :            :  *      For userspace also running on legacy drivers the "DPMS" semantics are a
     938                 :            :  *      lot more complicated. First, userspace cannot rely on the "DPMS" value
     939                 :            :  *      returned by the GETCONNECTOR actually reflecting reality, because many
     940                 :            :  *      drivers fail to update it. For atomic drivers this is taken care of in
     941                 :            :  *      drm_atomic_helper_update_legacy_modeset_state().
     942                 :            :  *
     943                 :            :  *      The second issue is that the DPMS state is only well-defined when the
     944                 :            :  *      connector is connected to a CRTC. In atomic the DRM core enforces that
     945                 :            :  *      "ACTIVE" is off in such a case, no such checks exists for "DPMS".
     946                 :            :  *
     947                 :            :  *      Finally, when enabling an output using the legacy SETCONFIG ioctl then
     948                 :            :  *      "DPMS" is forced to ON. But see above, that might not be reflected in
     949                 :            :  *      the software value on legacy drivers.
     950                 :            :  *
     951                 :            :  *      Summarizing: Only set "DPMS" when the connector is known to be enabled,
     952                 :            :  *      assume that a successful SETCONFIG call also sets "DPMS" to on, and
     953                 :            :  *      never read back the value of "DPMS" because it can be incorrect.
     954                 :            :  * PATH:
     955                 :            :  *      Connector path property to identify how this sink is physically
     956                 :            :  *      connected. Used by DP MST. This should be set by calling
     957                 :            :  *      drm_connector_set_path_property(), in the case of DP MST with the
     958                 :            :  *      path property the MST manager created. Userspace cannot change this
     959                 :            :  *      property.
     960                 :            :  * TILE:
     961                 :            :  *      Connector tile group property to indicate how a set of DRM connector
     962                 :            :  *      compose together into one logical screen. This is used by both high-res
     963                 :            :  *      external screens (often only using a single cable, but exposing multiple
     964                 :            :  *      DP MST sinks), or high-res integrated panels (like dual-link DSI) which
     965                 :            :  *      are not gen-locked. Note that for tiled panels which are genlocked, like
     966                 :            :  *      dual-link LVDS or dual-link DSI, the driver should try to not expose the
     967                 :            :  *      tiling and virtualize both &drm_crtc and &drm_plane if needed. Drivers
     968                 :            :  *      should update this value using drm_connector_set_tile_property().
     969                 :            :  *      Userspace cannot change this property.
     970                 :            :  * link-status:
     971                 :            :  *      Connector link-status property to indicate the status of link. The
     972                 :            :  *      default value of link-status is "GOOD". If something fails during or
     973                 :            :  *      after modeset, the kernel driver may set this to "BAD" and issue a
     974                 :            :  *      hotplug uevent. Drivers should update this value using
     975                 :            :  *      drm_connector_set_link_status_property().
     976                 :            :  * non_desktop:
     977                 :            :  *      Indicates the output should be ignored for purposes of displaying a
     978                 :            :  *      standard desktop environment or console. This is most likely because
     979                 :            :  *      the output device is not rectilinear.
     980                 :            :  * Content Protection:
     981                 :            :  *      This property is used by userspace to request the kernel protect future
     982                 :            :  *      content communicated over the link. When requested, kernel will apply
     983                 :            :  *      the appropriate means of protection (most often HDCP), and use the
     984                 :            :  *      property to tell userspace the protection is active.
     985                 :            :  *
     986                 :            :  *      Drivers can set this up by calling
     987                 :            :  *      drm_connector_attach_content_protection_property() on initialization.
     988                 :            :  *
     989                 :            :  *      The value of this property can be one of the following:
     990                 :            :  *
     991                 :            :  *      DRM_MODE_CONTENT_PROTECTION_UNDESIRED = 0
     992                 :            :  *              The link is not protected, content is transmitted in the clear.
     993                 :            :  *      DRM_MODE_CONTENT_PROTECTION_DESIRED = 1
     994                 :            :  *              Userspace has requested content protection, but the link is not
     995                 :            :  *              currently protected. When in this state, kernel should enable
     996                 :            :  *              Content Protection as soon as possible.
     997                 :            :  *      DRM_MODE_CONTENT_PROTECTION_ENABLED = 2
     998                 :            :  *              Userspace has requested content protection, and the link is
     999                 :            :  *              protected. Only the driver can set the property to this value.
    1000                 :            :  *              If userspace attempts to set to ENABLED, kernel will return
    1001                 :            :  *              -EINVAL.
    1002                 :            :  *
    1003                 :            :  *      A few guidelines:
    1004                 :            :  *
    1005                 :            :  *      - DESIRED state should be preserved until userspace de-asserts it by
    1006                 :            :  *        setting the property to UNDESIRED. This means ENABLED should only
    1007                 :            :  *        transition to UNDESIRED when the user explicitly requests it.
    1008                 :            :  *      - If the state is DESIRED, kernel should attempt to re-authenticate the
    1009                 :            :  *        link whenever possible. This includes across disable/enable, dpms,
    1010                 :            :  *        hotplug, downstream device changes, link status failures, etc..
    1011                 :            :  *      - Kernel sends uevent with the connector id and property id through
    1012                 :            :  *        @drm_hdcp_update_content_protection, upon below kernel triggered
    1013                 :            :  *        scenarios:
    1014                 :            :  *
    1015                 :            :  *              - DESIRED -> ENABLED (authentication success)
    1016                 :            :  *              - ENABLED -> DESIRED (termination of authentication)
    1017                 :            :  *      - Please note no uevents for userspace triggered property state changes,
    1018                 :            :  *        which can't fail such as
    1019                 :            :  *
    1020                 :            :  *              - DESIRED/ENABLED -> UNDESIRED
    1021                 :            :  *              - UNDESIRED -> DESIRED
    1022                 :            :  *      - Userspace is responsible for polling the property or listen to uevents
    1023                 :            :  *        to determine when the value transitions from ENABLED to DESIRED.
    1024                 :            :  *        This signifies the link is no longer protected and userspace should
    1025                 :            :  *        take appropriate action (whatever that might be).
    1026                 :            :  *
    1027                 :            :  * HDCP Content Type:
    1028                 :            :  *      This Enum property is used by the userspace to declare the content type
    1029                 :            :  *      of the display stream, to kernel. Here display stream stands for any
    1030                 :            :  *      display content that userspace intended to display through HDCP
    1031                 :            :  *      encryption.
    1032                 :            :  *
    1033                 :            :  *      Content Type of a stream is decided by the owner of the stream, as
    1034                 :            :  *      "HDCP Type0" or "HDCP Type1".
    1035                 :            :  *
    1036                 :            :  *      The value of the property can be one of the below:
    1037                 :            :  *        - "HDCP Type0": DRM_MODE_HDCP_CONTENT_TYPE0 = 0
    1038                 :            :  *        - "HDCP Type1": DRM_MODE_HDCP_CONTENT_TYPE1 = 1
    1039                 :            :  *
    1040                 :            :  *      When kernel starts the HDCP authentication (see "Content Protection"
    1041                 :            :  *      for details), it uses the content type in "HDCP Content Type"
    1042                 :            :  *      for performing the HDCP authentication with the display sink.
    1043                 :            :  *
    1044                 :            :  *      Please note in HDCP spec versions, a link can be authenticated with
    1045                 :            :  *      HDCP 2.2 for Content Type 0/Content Type 1. Where as a link can be
    1046                 :            :  *      authenticated with HDCP1.4 only for Content Type 0(though it is implicit
    1047                 :            :  *      in nature. As there is no reference for Content Type in HDCP1.4).
    1048                 :            :  *
    1049                 :            :  *      HDCP2.2 authentication protocol itself takes the "Content Type" as a
    1050                 :            :  *      parameter, which is a input for the DP HDCP2.2 encryption algo.
    1051                 :            :  *
    1052                 :            :  *      In case of Type 0 content protection request, kernel driver can choose
    1053                 :            :  *      either of HDCP spec versions 1.4 and 2.2. When HDCP2.2 is used for
    1054                 :            :  *      "HDCP Type 0", a HDCP 2.2 capable repeater in the downstream can send
    1055                 :            :  *      that content to a HDCP 1.4 authenticated HDCP sink (Type0 link).
    1056                 :            :  *      But if the content is classified as "HDCP Type 1", above mentioned
    1057                 :            :  *      HDCP 2.2 repeater wont send the content to the HDCP sink as it can't
    1058                 :            :  *      authenticate the HDCP1.4 capable sink for "HDCP Type 1".
    1059                 :            :  *
    1060                 :            :  *      Please note userspace can be ignorant of the HDCP versions used by the
    1061                 :            :  *      kernel driver to achieve the "HDCP Content Type".
    1062                 :            :  *
    1063                 :            :  *      At current scenario, classifying a content as Type 1 ensures that the
    1064                 :            :  *      content will be displayed only through the HDCP2.2 encrypted link.
    1065                 :            :  *
    1066                 :            :  *      Note that the HDCP Content Type property is introduced at HDCP 2.2, and
    1067                 :            :  *      defaults to type 0. It is only exposed by drivers supporting HDCP 2.2
    1068                 :            :  *      (hence supporting Type 0 and Type 1). Based on how next versions of
    1069                 :            :  *      HDCP specs are defined content Type could be used for higher versions
    1070                 :            :  *      too.
    1071                 :            :  *
    1072                 :            :  *      If content type is changed when "Content Protection" is not UNDESIRED,
    1073                 :            :  *      then kernel will disable the HDCP and re-enable with new type in the
    1074                 :            :  *      same atomic commit. And when "Content Protection" is ENABLED, it means
    1075                 :            :  *      that link is HDCP authenticated and encrypted, for the transmission of
    1076                 :            :  *      the Type of stream mentioned at "HDCP Content Type".
    1077                 :            :  *
    1078                 :            :  * HDR_OUTPUT_METADATA:
    1079                 :            :  *      Connector property to enable userspace to send HDR Metadata to
    1080                 :            :  *      driver. This metadata is based on the composition and blending
    1081                 :            :  *      policies decided by user, taking into account the hardware and
    1082                 :            :  *      sink capabilities. The driver gets this metadata and creates a
    1083                 :            :  *      Dynamic Range and Mastering Infoframe (DRM) in case of HDMI,
    1084                 :            :  *      SDP packet (Non-audio INFOFRAME SDP v1.3) for DP. This is then
    1085                 :            :  *      sent to sink. This notifies the sink of the upcoming frame's Color
    1086                 :            :  *      Encoding and Luminance parameters.
    1087                 :            :  *
    1088                 :            :  *      Userspace first need to detect the HDR capabilities of sink by
    1089                 :            :  *      reading and parsing the EDID. Details of HDR metadata for HDMI
    1090                 :            :  *      are added in CTA 861.G spec. For DP , its defined in VESA DP
    1091                 :            :  *      Standard v1.4. It needs to then get the metadata information
    1092                 :            :  *      of the video/game/app content which are encoded in HDR (basically
    1093                 :            :  *      using HDR transfer functions). With this information it needs to
    1094                 :            :  *      decide on a blending policy and compose the relevant
    1095                 :            :  *      layers/overlays into a common format. Once this blending is done,
    1096                 :            :  *      userspace will be aware of the metadata of the composed frame to
    1097                 :            :  *      be send to sink. It then uses this property to communicate this
    1098                 :            :  *      metadata to driver which then make a Infoframe packet and sends
    1099                 :            :  *      to sink based on the type of encoder connected.
    1100                 :            :  *
    1101                 :            :  *      Userspace will be responsible to do Tone mapping operation in case:
    1102                 :            :  *              - Some layers are HDR and others are SDR
    1103                 :            :  *              - HDR layers luminance is not same as sink
    1104                 :            :  *
    1105                 :            :  *      It will even need to do colorspace conversion and get all layers
    1106                 :            :  *      to one common colorspace for blending. It can use either GL, Media
    1107                 :            :  *      or display engine to get this done based on the capabilties of the
    1108                 :            :  *      associated hardware.
    1109                 :            :  *
    1110                 :            :  *      Driver expects metadata to be put in &struct hdr_output_metadata
    1111                 :            :  *      structure from userspace. This is received as blob and stored in
    1112                 :            :  *      &drm_connector_state.hdr_output_metadata. It parses EDID and saves the
    1113                 :            :  *      sink metadata in &struct hdr_sink_metadata, as
    1114                 :            :  *      &drm_connector.hdr_sink_metadata.  Driver uses
    1115                 :            :  *      drm_hdmi_infoframe_set_hdr_metadata() helper to set the HDR metadata,
    1116                 :            :  *      hdmi_drm_infoframe_pack() to pack the infoframe as per spec, in case of
    1117                 :            :  *      HDMI encoder.
    1118                 :            :  *
    1119                 :            :  * max bpc:
    1120                 :            :  *      This range property is used by userspace to limit the bit depth. When
    1121                 :            :  *      used the driver would limit the bpc in accordance with the valid range
    1122                 :            :  *      supported by the hardware and sink. Drivers to use the function
    1123                 :            :  *      drm_connector_attach_max_bpc_property() to create and attach the
    1124                 :            :  *      property to the connector during initialization.
    1125                 :            :  *
    1126                 :            :  * Connectors also have one standardized atomic property:
    1127                 :            :  *
    1128                 :            :  * CRTC_ID:
    1129                 :            :  *      Mode object ID of the &drm_crtc this connector should be connected to.
    1130                 :            :  *
    1131                 :            :  * Connectors for LCD panels may also have one standardized property:
    1132                 :            :  *
    1133                 :            :  * panel orientation:
    1134                 :            :  *      On some devices the LCD panel is mounted in the casing in such a way
    1135                 :            :  *      that the up/top side of the panel does not match with the top side of
    1136                 :            :  *      the device. Userspace can use this property to check for this.
    1137                 :            :  *      Note that input coordinates from touchscreens (input devices with
    1138                 :            :  *      INPUT_PROP_DIRECT) will still map 1:1 to the actual LCD panel
    1139                 :            :  *      coordinates, so if userspace rotates the picture to adjust for
    1140                 :            :  *      the orientation it must also apply the same transformation to the
    1141                 :            :  *      touchscreen input coordinates. This property is initialized by calling
    1142                 :            :  *      drm_connector_init_panel_orientation_property().
    1143                 :            :  *
    1144                 :            :  * scaling mode:
    1145                 :            :  *      This property defines how a non-native mode is upscaled to the native
    1146                 :            :  *      mode of an LCD panel:
    1147                 :            :  *
    1148                 :            :  *      None:
    1149                 :            :  *              No upscaling happens, scaling is left to the panel. Not all
    1150                 :            :  *              drivers expose this mode.
    1151                 :            :  *      Full:
    1152                 :            :  *              The output is upscaled to the full resolution of the panel,
    1153                 :            :  *              ignoring the aspect ratio.
    1154                 :            :  *      Center:
    1155                 :            :  *              No upscaling happens, the output is centered within the native
    1156                 :            :  *              resolution the panel.
    1157                 :            :  *      Full aspect:
    1158                 :            :  *              The output is upscaled to maximize either the width or height
    1159                 :            :  *              while retaining the aspect ratio.
    1160                 :            :  *
    1161                 :            :  *      This property should be set up by calling
    1162                 :            :  *      drm_connector_attach_scaling_mode_property(). Note that drivers
    1163                 :            :  *      can also expose this property to external outputs, in which case they
    1164                 :            :  *      must support "None", which should be the default (since external screens
    1165                 :            :  *      have a built-in scaler).
    1166                 :            :  */
    1167                 :            : 
    1168                 :          0 : int drm_connector_create_standard_properties(struct drm_device *dev)
    1169                 :            : {
    1170                 :          0 :         struct drm_property *prop;
    1171                 :            : 
    1172                 :          0 :         prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
    1173                 :            :                                    DRM_MODE_PROP_IMMUTABLE,
    1174                 :            :                                    "EDID", 0);
    1175         [ #  # ]:          0 :         if (!prop)
    1176                 :            :                 return -ENOMEM;
    1177                 :          0 :         dev->mode_config.edid_property = prop;
    1178                 :            : 
    1179                 :          0 :         prop = drm_property_create_enum(dev, 0,
    1180                 :            :                                    "DPMS", drm_dpms_enum_list,
    1181                 :            :                                    ARRAY_SIZE(drm_dpms_enum_list));
    1182         [ #  # ]:          0 :         if (!prop)
    1183                 :            :                 return -ENOMEM;
    1184                 :          0 :         dev->mode_config.dpms_property = prop;
    1185                 :            : 
    1186                 :          0 :         prop = drm_property_create(dev,
    1187                 :            :                                    DRM_MODE_PROP_BLOB |
    1188                 :            :                                    DRM_MODE_PROP_IMMUTABLE,
    1189                 :            :                                    "PATH", 0);
    1190         [ #  # ]:          0 :         if (!prop)
    1191                 :            :                 return -ENOMEM;
    1192                 :          0 :         dev->mode_config.path_property = prop;
    1193                 :            : 
    1194                 :          0 :         prop = drm_property_create(dev,
    1195                 :            :                                    DRM_MODE_PROP_BLOB |
    1196                 :            :                                    DRM_MODE_PROP_IMMUTABLE,
    1197                 :            :                                    "TILE", 0);
    1198         [ #  # ]:          0 :         if (!prop)
    1199                 :            :                 return -ENOMEM;
    1200                 :          0 :         dev->mode_config.tile_property = prop;
    1201                 :            : 
    1202                 :          0 :         prop = drm_property_create_enum(dev, 0, "link-status",
    1203                 :            :                                         drm_link_status_enum_list,
    1204                 :            :                                         ARRAY_SIZE(drm_link_status_enum_list));
    1205         [ #  # ]:          0 :         if (!prop)
    1206                 :            :                 return -ENOMEM;
    1207                 :          0 :         dev->mode_config.link_status_property = prop;
    1208                 :            : 
    1209                 :          0 :         prop = drm_property_create_bool(dev, DRM_MODE_PROP_IMMUTABLE, "non-desktop");
    1210         [ #  # ]:          0 :         if (!prop)
    1211                 :            :                 return -ENOMEM;
    1212                 :          0 :         dev->mode_config.non_desktop_property = prop;
    1213                 :            : 
    1214                 :          0 :         prop = drm_property_create(dev, DRM_MODE_PROP_BLOB,
    1215                 :            :                                    "HDR_OUTPUT_METADATA", 0);
    1216         [ #  # ]:          0 :         if (!prop)
    1217                 :            :                 return -ENOMEM;
    1218                 :          0 :         dev->mode_config.hdr_output_metadata_property = prop;
    1219                 :            : 
    1220                 :          0 :         return 0;
    1221                 :            : }
    1222                 :            : 
    1223                 :            : /**
    1224                 :            :  * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
    1225                 :            :  * @dev: DRM device
    1226                 :            :  *
    1227                 :            :  * Called by a driver the first time a DVI-I connector is made.
    1228                 :            :  */
    1229                 :          0 : int drm_mode_create_dvi_i_properties(struct drm_device *dev)
    1230                 :            : {
    1231                 :          0 :         struct drm_property *dvi_i_selector;
    1232                 :          0 :         struct drm_property *dvi_i_subconnector;
    1233                 :            : 
    1234         [ #  # ]:          0 :         if (dev->mode_config.dvi_i_select_subconnector_property)
    1235                 :            :                 return 0;
    1236                 :            : 
    1237                 :          0 :         dvi_i_selector =
    1238                 :          0 :                 drm_property_create_enum(dev, 0,
    1239                 :            :                                     "select subconnector",
    1240                 :            :                                     drm_dvi_i_select_enum_list,
    1241                 :            :                                     ARRAY_SIZE(drm_dvi_i_select_enum_list));
    1242                 :          0 :         dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
    1243                 :            : 
    1244                 :          0 :         dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
    1245                 :            :                                     "subconnector",
    1246                 :            :                                     drm_dvi_i_subconnector_enum_list,
    1247                 :            :                                     ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
    1248                 :          0 :         dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
    1249                 :            : 
    1250                 :          0 :         return 0;
    1251                 :            : }
    1252                 :            : EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
    1253                 :            : 
    1254                 :            : /**
    1255                 :            :  * DOC: HDMI connector properties
    1256                 :            :  *
    1257                 :            :  * content type (HDMI specific):
    1258                 :            :  *      Indicates content type setting to be used in HDMI infoframes to indicate
    1259                 :            :  *      content type for the external device, so that it adjusts its display
    1260                 :            :  *      settings accordingly.
    1261                 :            :  *
    1262                 :            :  *      The value of this property can be one of the following:
    1263                 :            :  *
    1264                 :            :  *      No Data:
    1265                 :            :  *              Content type is unknown
    1266                 :            :  *      Graphics:
    1267                 :            :  *              Content type is graphics
    1268                 :            :  *      Photo:
    1269                 :            :  *              Content type is photo
    1270                 :            :  *      Cinema:
    1271                 :            :  *              Content type is cinema
    1272                 :            :  *      Game:
    1273                 :            :  *              Content type is game
    1274                 :            :  *
    1275                 :            :  *      Drivers can set up this property by calling
    1276                 :            :  *      drm_connector_attach_content_type_property(). Decoding to
    1277                 :            :  *      infoframe values is done through drm_hdmi_avi_infoframe_content_type().
    1278                 :            :  */
    1279                 :            : 
    1280                 :            : /**
    1281                 :            :  * drm_connector_attach_content_type_property - attach content-type property
    1282                 :            :  * @connector: connector to attach content type property on.
    1283                 :            :  *
    1284                 :            :  * Called by a driver the first time a HDMI connector is made.
    1285                 :            :  */
    1286                 :          0 : int drm_connector_attach_content_type_property(struct drm_connector *connector)
    1287                 :            : {
    1288         [ #  # ]:          0 :         if (!drm_mode_create_content_type_property(connector->dev))
    1289                 :          0 :                 drm_object_attach_property(&connector->base,
    1290                 :          0 :                                            connector->dev->mode_config.content_type_property,
    1291                 :            :                                            DRM_MODE_CONTENT_TYPE_NO_DATA);
    1292                 :          0 :         return 0;
    1293                 :            : }
    1294                 :            : EXPORT_SYMBOL(drm_connector_attach_content_type_property);
    1295                 :            : 
    1296                 :            : 
    1297                 :            : /**
    1298                 :            :  * drm_hdmi_avi_infoframe_content_type() - fill the HDMI AVI infoframe
    1299                 :            :  *                                         content type information, based
    1300                 :            :  *                                         on correspondent DRM property.
    1301                 :            :  * @frame: HDMI AVI infoframe
    1302                 :            :  * @conn_state: DRM display connector state
    1303                 :            :  *
    1304                 :            :  */
    1305                 :          0 : void drm_hdmi_avi_infoframe_content_type(struct hdmi_avi_infoframe *frame,
    1306                 :            :                                          const struct drm_connector_state *conn_state)
    1307                 :            : {
    1308   [ #  #  #  #  :          0 :         switch (conn_state->content_type) {
                      # ]
    1309                 :          0 :         case DRM_MODE_CONTENT_TYPE_GRAPHICS:
    1310                 :          0 :                 frame->content_type = HDMI_CONTENT_TYPE_GRAPHICS;
    1311                 :          0 :                 break;
    1312                 :          0 :         case DRM_MODE_CONTENT_TYPE_CINEMA:
    1313                 :          0 :                 frame->content_type = HDMI_CONTENT_TYPE_CINEMA;
    1314                 :          0 :                 break;
    1315                 :          0 :         case DRM_MODE_CONTENT_TYPE_GAME:
    1316                 :          0 :                 frame->content_type = HDMI_CONTENT_TYPE_GAME;
    1317                 :          0 :                 break;
    1318                 :          0 :         case DRM_MODE_CONTENT_TYPE_PHOTO:
    1319                 :          0 :                 frame->content_type = HDMI_CONTENT_TYPE_PHOTO;
    1320                 :          0 :                 break;
    1321                 :          0 :         default:
    1322                 :            :                 /* Graphics is the default(0) */
    1323                 :          0 :                 frame->content_type = HDMI_CONTENT_TYPE_GRAPHICS;
    1324                 :            :         }
    1325                 :            : 
    1326                 :          0 :         frame->itc = conn_state->content_type != DRM_MODE_CONTENT_TYPE_NO_DATA;
    1327                 :          0 : }
    1328                 :            : EXPORT_SYMBOL(drm_hdmi_avi_infoframe_content_type);
    1329                 :            : 
    1330                 :            : /**
    1331                 :            :  * drm_mode_attach_tv_margin_properties - attach TV connector margin properties
    1332                 :            :  * @connector: DRM connector
    1333                 :            :  *
    1334                 :            :  * Called by a driver when it needs to attach TV margin props to a connector.
    1335                 :            :  * Typically used on SDTV and HDMI connectors.
    1336                 :            :  */
    1337                 :          0 : void drm_connector_attach_tv_margin_properties(struct drm_connector *connector)
    1338                 :            : {
    1339                 :          0 :         struct drm_device *dev = connector->dev;
    1340                 :            : 
    1341                 :          0 :         drm_object_attach_property(&connector->base,
    1342                 :            :                                    dev->mode_config.tv_left_margin_property,
    1343                 :            :                                    0);
    1344                 :          0 :         drm_object_attach_property(&connector->base,
    1345                 :            :                                    dev->mode_config.tv_right_margin_property,
    1346                 :            :                                    0);
    1347                 :          0 :         drm_object_attach_property(&connector->base,
    1348                 :            :                                    dev->mode_config.tv_top_margin_property,
    1349                 :            :                                    0);
    1350                 :          0 :         drm_object_attach_property(&connector->base,
    1351                 :            :                                    dev->mode_config.tv_bottom_margin_property,
    1352                 :            :                                    0);
    1353                 :          0 : }
    1354                 :            : EXPORT_SYMBOL(drm_connector_attach_tv_margin_properties);
    1355                 :            : 
    1356                 :            : /**
    1357                 :            :  * drm_mode_create_tv_margin_properties - create TV connector margin properties
    1358                 :            :  * @dev: DRM device
    1359                 :            :  *
    1360                 :            :  * Called by a driver's HDMI connector initialization routine, this function
    1361                 :            :  * creates the TV margin properties for a given device. No need to call this
    1362                 :            :  * function for an SDTV connector, it's already called from
    1363                 :            :  * drm_mode_create_tv_properties().
    1364                 :            :  */
    1365                 :          0 : int drm_mode_create_tv_margin_properties(struct drm_device *dev)
    1366                 :            : {
    1367         [ #  # ]:          0 :         if (dev->mode_config.tv_left_margin_property)
    1368                 :            :                 return 0;
    1369                 :            : 
    1370                 :          0 :         dev->mode_config.tv_left_margin_property =
    1371                 :          0 :                 drm_property_create_range(dev, 0, "left margin", 0, 100);
    1372         [ #  # ]:          0 :         if (!dev->mode_config.tv_left_margin_property)
    1373                 :            :                 return -ENOMEM;
    1374                 :            : 
    1375                 :          0 :         dev->mode_config.tv_right_margin_property =
    1376                 :          0 :                 drm_property_create_range(dev, 0, "right margin", 0, 100);
    1377         [ #  # ]:          0 :         if (!dev->mode_config.tv_right_margin_property)
    1378                 :            :                 return -ENOMEM;
    1379                 :            : 
    1380                 :          0 :         dev->mode_config.tv_top_margin_property =
    1381                 :          0 :                 drm_property_create_range(dev, 0, "top margin", 0, 100);
    1382         [ #  # ]:          0 :         if (!dev->mode_config.tv_top_margin_property)
    1383                 :            :                 return -ENOMEM;
    1384                 :            : 
    1385                 :          0 :         dev->mode_config.tv_bottom_margin_property =
    1386                 :          0 :                 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
    1387         [ #  # ]:          0 :         if (!dev->mode_config.tv_bottom_margin_property)
    1388                 :          0 :                 return -ENOMEM;
    1389                 :            : 
    1390                 :            :         return 0;
    1391                 :            : }
    1392                 :            : EXPORT_SYMBOL(drm_mode_create_tv_margin_properties);
    1393                 :            : 
    1394                 :            : /**
    1395                 :            :  * drm_mode_create_tv_properties - create TV specific connector properties
    1396                 :            :  * @dev: DRM device
    1397                 :            :  * @num_modes: number of different TV formats (modes) supported
    1398                 :            :  * @modes: array of pointers to strings containing name of each format
    1399                 :            :  *
    1400                 :            :  * Called by a driver's TV initialization routine, this function creates
    1401                 :            :  * the TV specific connector properties for a given device.  Caller is
    1402                 :            :  * responsible for allocating a list of format names and passing them to
    1403                 :            :  * this routine.
    1404                 :            :  */
    1405                 :          0 : int drm_mode_create_tv_properties(struct drm_device *dev,
    1406                 :            :                                   unsigned int num_modes,
    1407                 :            :                                   const char * const modes[])
    1408                 :            : {
    1409                 :          0 :         struct drm_property *tv_selector;
    1410                 :          0 :         struct drm_property *tv_subconnector;
    1411                 :          0 :         unsigned int i;
    1412                 :            : 
    1413         [ #  # ]:          0 :         if (dev->mode_config.tv_select_subconnector_property)
    1414                 :            :                 return 0;
    1415                 :            : 
    1416                 :            :         /*
    1417                 :            :          * Basic connector properties
    1418                 :            :          */
    1419                 :          0 :         tv_selector = drm_property_create_enum(dev, 0,
    1420                 :            :                                           "select subconnector",
    1421                 :            :                                           drm_tv_select_enum_list,
    1422                 :            :                                           ARRAY_SIZE(drm_tv_select_enum_list));
    1423         [ #  # ]:          0 :         if (!tv_selector)
    1424                 :          0 :                 goto nomem;
    1425                 :            : 
    1426                 :          0 :         dev->mode_config.tv_select_subconnector_property = tv_selector;
    1427                 :            : 
    1428                 :          0 :         tv_subconnector =
    1429                 :          0 :                 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
    1430                 :            :                                     "subconnector",
    1431                 :            :                                     drm_tv_subconnector_enum_list,
    1432                 :            :                                     ARRAY_SIZE(drm_tv_subconnector_enum_list));
    1433         [ #  # ]:          0 :         if (!tv_subconnector)
    1434                 :          0 :                 goto nomem;
    1435                 :          0 :         dev->mode_config.tv_subconnector_property = tv_subconnector;
    1436                 :            : 
    1437                 :            :         /*
    1438                 :            :          * Other, TV specific properties: margins & TV modes.
    1439                 :            :          */
    1440         [ #  # ]:          0 :         if (drm_mode_create_tv_margin_properties(dev))
    1441                 :          0 :                 goto nomem;
    1442                 :            : 
    1443                 :          0 :         dev->mode_config.tv_mode_property =
    1444                 :          0 :                 drm_property_create(dev, DRM_MODE_PROP_ENUM,
    1445                 :            :                                     "mode", num_modes);
    1446         [ #  # ]:          0 :         if (!dev->mode_config.tv_mode_property)
    1447                 :          0 :                 goto nomem;
    1448                 :            : 
    1449         [ #  # ]:          0 :         for (i = 0; i < num_modes; i++)
    1450                 :          0 :                 drm_property_add_enum(dev->mode_config.tv_mode_property,
    1451                 :          0 :                                       i, modes[i]);
    1452                 :            : 
    1453                 :          0 :         dev->mode_config.tv_brightness_property =
    1454                 :          0 :                 drm_property_create_range(dev, 0, "brightness", 0, 100);
    1455         [ #  # ]:          0 :         if (!dev->mode_config.tv_brightness_property)
    1456                 :          0 :                 goto nomem;
    1457                 :            : 
    1458                 :          0 :         dev->mode_config.tv_contrast_property =
    1459                 :          0 :                 drm_property_create_range(dev, 0, "contrast", 0, 100);
    1460         [ #  # ]:          0 :         if (!dev->mode_config.tv_contrast_property)
    1461                 :          0 :                 goto nomem;
    1462                 :            : 
    1463                 :          0 :         dev->mode_config.tv_flicker_reduction_property =
    1464                 :          0 :                 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
    1465         [ #  # ]:          0 :         if (!dev->mode_config.tv_flicker_reduction_property)
    1466                 :          0 :                 goto nomem;
    1467                 :            : 
    1468                 :          0 :         dev->mode_config.tv_overscan_property =
    1469                 :          0 :                 drm_property_create_range(dev, 0, "overscan", 0, 100);
    1470         [ #  # ]:          0 :         if (!dev->mode_config.tv_overscan_property)
    1471                 :          0 :                 goto nomem;
    1472                 :            : 
    1473                 :          0 :         dev->mode_config.tv_saturation_property =
    1474                 :          0 :                 drm_property_create_range(dev, 0, "saturation", 0, 100);
    1475         [ #  # ]:          0 :         if (!dev->mode_config.tv_saturation_property)
    1476                 :          0 :                 goto nomem;
    1477                 :            : 
    1478                 :          0 :         dev->mode_config.tv_hue_property =
    1479                 :          0 :                 drm_property_create_range(dev, 0, "hue", 0, 100);
    1480         [ #  # ]:          0 :         if (!dev->mode_config.tv_hue_property)
    1481                 :          0 :                 goto nomem;
    1482                 :            : 
    1483                 :            :         return 0;
    1484                 :            : nomem:
    1485                 :            :         return -ENOMEM;
    1486                 :            : }
    1487                 :            : EXPORT_SYMBOL(drm_mode_create_tv_properties);
    1488                 :            : 
    1489                 :            : /**
    1490                 :            :  * drm_mode_create_scaling_mode_property - create scaling mode property
    1491                 :            :  * @dev: DRM device
    1492                 :            :  *
    1493                 :            :  * Called by a driver the first time it's needed, must be attached to desired
    1494                 :            :  * connectors.
    1495                 :            :  *
    1496                 :            :  * Atomic drivers should use drm_connector_attach_scaling_mode_property()
    1497                 :            :  * instead to correctly assign &drm_connector_state.picture_aspect_ratio
    1498                 :            :  * in the atomic state.
    1499                 :            :  */
    1500                 :          0 : int drm_mode_create_scaling_mode_property(struct drm_device *dev)
    1501                 :            : {
    1502                 :          0 :         struct drm_property *scaling_mode;
    1503                 :            : 
    1504         [ #  # ]:          0 :         if (dev->mode_config.scaling_mode_property)
    1505                 :            :                 return 0;
    1506                 :            : 
    1507                 :          0 :         scaling_mode =
    1508                 :          0 :                 drm_property_create_enum(dev, 0, "scaling mode",
    1509                 :            :                                 drm_scaling_mode_enum_list,
    1510                 :            :                                     ARRAY_SIZE(drm_scaling_mode_enum_list));
    1511                 :            : 
    1512                 :          0 :         dev->mode_config.scaling_mode_property = scaling_mode;
    1513                 :            : 
    1514                 :          0 :         return 0;
    1515                 :            : }
    1516                 :            : EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
    1517                 :            : 
    1518                 :            : /**
    1519                 :            :  * DOC: Variable refresh properties
    1520                 :            :  *
    1521                 :            :  * Variable refresh rate capable displays can dynamically adjust their
    1522                 :            :  * refresh rate by extending the duration of their vertical front porch
    1523                 :            :  * until page flip or timeout occurs. This can reduce or remove stuttering
    1524                 :            :  * and latency in scenarios where the page flip does not align with the
    1525                 :            :  * vblank interval.
    1526                 :            :  *
    1527                 :            :  * An example scenario would be an application flipping at a constant rate
    1528                 :            :  * of 48Hz on a 60Hz display. The page flip will frequently miss the vblank
    1529                 :            :  * interval and the same contents will be displayed twice. This can be
    1530                 :            :  * observed as stuttering for content with motion.
    1531                 :            :  *
    1532                 :            :  * If variable refresh rate was active on a display that supported a
    1533                 :            :  * variable refresh range from 35Hz to 60Hz no stuttering would be observable
    1534                 :            :  * for the example scenario. The minimum supported variable refresh rate of
    1535                 :            :  * 35Hz is below the page flip frequency and the vertical front porch can
    1536                 :            :  * be extended until the page flip occurs. The vblank interval will be
    1537                 :            :  * directly aligned to the page flip rate.
    1538                 :            :  *
    1539                 :            :  * Not all userspace content is suitable for use with variable refresh rate.
    1540                 :            :  * Large and frequent changes in vertical front porch duration may worsen
    1541                 :            :  * perceived stuttering for input sensitive applications.
    1542                 :            :  *
    1543                 :            :  * Panel brightness will also vary with vertical front porch duration. Some
    1544                 :            :  * panels may have noticeable differences in brightness between the minimum
    1545                 :            :  * vertical front porch duration and the maximum vertical front porch duration.
    1546                 :            :  * Large and frequent changes in vertical front porch duration may produce
    1547                 :            :  * observable flickering for such panels.
    1548                 :            :  *
    1549                 :            :  * Userspace control for variable refresh rate is supported via properties
    1550                 :            :  * on the &drm_connector and &drm_crtc objects.
    1551                 :            :  *
    1552                 :            :  * "vrr_capable":
    1553                 :            :  *      Optional &drm_connector boolean property that drivers should attach
    1554                 :            :  *      with drm_connector_attach_vrr_capable_property() on connectors that
    1555                 :            :  *      could support variable refresh rates. Drivers should update the
    1556                 :            :  *      property value by calling drm_connector_set_vrr_capable_property().
    1557                 :            :  *
    1558                 :            :  *      Absence of the property should indicate absence of support.
    1559                 :            :  *
    1560                 :            :  * "VRR_ENABLED":
    1561                 :            :  *      Default &drm_crtc boolean property that notifies the driver that the
    1562                 :            :  *      content on the CRTC is suitable for variable refresh rate presentation.
    1563                 :            :  *      The driver will take this property as a hint to enable variable
    1564                 :            :  *      refresh rate support if the receiver supports it, ie. if the
    1565                 :            :  *      "vrr_capable" property is true on the &drm_connector object. The
    1566                 :            :  *      vertical front porch duration will be extended until page-flip or
    1567                 :            :  *      timeout when enabled.
    1568                 :            :  *
    1569                 :            :  *      The minimum vertical front porch duration is defined as the vertical
    1570                 :            :  *      front porch duration for the current mode.
    1571                 :            :  *
    1572                 :            :  *      The maximum vertical front porch duration is greater than or equal to
    1573                 :            :  *      the minimum vertical front porch duration. The duration is derived
    1574                 :            :  *      from the minimum supported variable refresh rate for the connector.
    1575                 :            :  *
    1576                 :            :  *      The driver may place further restrictions within these minimum
    1577                 :            :  *      and maximum bounds.
    1578                 :            :  */
    1579                 :            : 
    1580                 :            : /**
    1581                 :            :  * drm_connector_attach_vrr_capable_property - creates the
    1582                 :            :  * vrr_capable property
    1583                 :            :  * @connector: connector to create the vrr_capable property on.
    1584                 :            :  *
    1585                 :            :  * This is used by atomic drivers to add support for querying
    1586                 :            :  * variable refresh rate capability for a connector.
    1587                 :            :  *
    1588                 :            :  * Returns:
    1589                 :            :  * Zero on success, negative errono on failure.
    1590                 :            :  */
    1591                 :          0 : int drm_connector_attach_vrr_capable_property(
    1592                 :            :         struct drm_connector *connector)
    1593                 :            : {
    1594                 :          0 :         struct drm_device *dev = connector->dev;
    1595                 :          0 :         struct drm_property *prop;
    1596                 :            : 
    1597         [ #  # ]:          0 :         if (!connector->vrr_capable_property) {
    1598                 :          0 :                 prop = drm_property_create_bool(dev, DRM_MODE_PROP_IMMUTABLE,
    1599                 :            :                         "vrr_capable");
    1600         [ #  # ]:          0 :                 if (!prop)
    1601                 :            :                         return -ENOMEM;
    1602                 :            : 
    1603                 :          0 :                 connector->vrr_capable_property = prop;
    1604                 :          0 :                 drm_object_attach_property(&connector->base, prop, 0);
    1605                 :            :         }
    1606                 :            : 
    1607                 :            :         return 0;
    1608                 :            : }
    1609                 :            : EXPORT_SYMBOL(drm_connector_attach_vrr_capable_property);
    1610                 :            : 
    1611                 :            : /**
    1612                 :            :  * drm_connector_attach_scaling_mode_property - attach atomic scaling mode property
    1613                 :            :  * @connector: connector to attach scaling mode property on.
    1614                 :            :  * @scaling_mode_mask: or'ed mask of BIT(%DRM_MODE_SCALE_\*).
    1615                 :            :  *
    1616                 :            :  * This is used to add support for scaling mode to atomic drivers.
    1617                 :            :  * The scaling mode will be set to &drm_connector_state.picture_aspect_ratio
    1618                 :            :  * and can be used from &drm_connector_helper_funcs->atomic_check for validation.
    1619                 :            :  *
    1620                 :            :  * This is the atomic version of drm_mode_create_scaling_mode_property().
    1621                 :            :  *
    1622                 :            :  * Returns:
    1623                 :            :  * Zero on success, negative errno on failure.
    1624                 :            :  */
    1625                 :          0 : int drm_connector_attach_scaling_mode_property(struct drm_connector *connector,
    1626                 :            :                                                u32 scaling_mode_mask)
    1627                 :            : {
    1628                 :          0 :         struct drm_device *dev = connector->dev;
    1629                 :          0 :         struct drm_property *scaling_mode_property;
    1630                 :          0 :         int i;
    1631                 :          0 :         const unsigned valid_scaling_mode_mask =
    1632                 :            :                 (1U << ARRAY_SIZE(drm_scaling_mode_enum_list)) - 1;
    1633                 :            : 
    1634   [ #  #  #  #  :          0 :         if (WARN_ON(hweight32(scaling_mode_mask) < 2 ||
          #  #  #  #  #  
                #  #  # ]
    1635                 :            :                     scaling_mode_mask & ~valid_scaling_mode_mask))
    1636                 :            :                 return -EINVAL;
    1637                 :            : 
    1638                 :          0 :         scaling_mode_property =
    1639         [ #  # ]:          0 :                 drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode",
    1640                 :          0 :                                     hweight32(scaling_mode_mask));
    1641                 :            : 
    1642         [ #  # ]:          0 :         if (!scaling_mode_property)
    1643                 :            :                 return -ENOMEM;
    1644                 :            : 
    1645         [ #  # ]:          0 :         for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++) {
    1646                 :          0 :                 int ret;
    1647                 :            : 
    1648         [ #  # ]:          0 :                 if (!(BIT(i) & scaling_mode_mask))
    1649                 :          0 :                         continue;
    1650                 :            : 
    1651                 :          0 :                 ret = drm_property_add_enum(scaling_mode_property,
    1652                 :          0 :                                             drm_scaling_mode_enum_list[i].type,
    1653                 :            :                                             drm_scaling_mode_enum_list[i].name);
    1654                 :            : 
    1655         [ #  # ]:          0 :                 if (ret) {
    1656                 :          0 :                         drm_property_destroy(dev, scaling_mode_property);
    1657                 :            : 
    1658                 :          0 :                         return ret;
    1659                 :            :                 }
    1660                 :            :         }
    1661                 :            : 
    1662                 :          0 :         drm_object_attach_property(&connector->base,
    1663                 :            :                                    scaling_mode_property, 0);
    1664                 :            : 
    1665                 :          0 :         connector->scaling_mode_property = scaling_mode_property;
    1666                 :            : 
    1667                 :          0 :         return 0;
    1668                 :            : }
    1669                 :            : EXPORT_SYMBOL(drm_connector_attach_scaling_mode_property);
    1670                 :            : 
    1671                 :            : /**
    1672                 :            :  * drm_mode_create_aspect_ratio_property - create aspect ratio property
    1673                 :            :  * @dev: DRM device
    1674                 :            :  *
    1675                 :            :  * Called by a driver the first time it's needed, must be attached to desired
    1676                 :            :  * connectors.
    1677                 :            :  *
    1678                 :            :  * Returns:
    1679                 :            :  * Zero on success, negative errno on failure.
    1680                 :            :  */
    1681                 :          0 : int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
    1682                 :            : {
    1683         [ #  # ]:          0 :         if (dev->mode_config.aspect_ratio_property)
    1684                 :            :                 return 0;
    1685                 :            : 
    1686                 :          0 :         dev->mode_config.aspect_ratio_property =
    1687                 :          0 :                 drm_property_create_enum(dev, 0, "aspect ratio",
    1688                 :            :                                 drm_aspect_ratio_enum_list,
    1689                 :            :                                 ARRAY_SIZE(drm_aspect_ratio_enum_list));
    1690                 :            : 
    1691         [ #  # ]:          0 :         if (dev->mode_config.aspect_ratio_property == NULL)
    1692                 :          0 :                 return -ENOMEM;
    1693                 :            : 
    1694                 :            :         return 0;
    1695                 :            : }
    1696                 :            : EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
    1697                 :            : 
    1698                 :            : /**
    1699                 :            :  * DOC: standard connector properties
    1700                 :            :  *
    1701                 :            :  * Colorspace:
    1702                 :            :  *     This property helps select a suitable colorspace based on the sink
    1703                 :            :  *     capability. Modern sink devices support wider gamut like BT2020.
    1704                 :            :  *     This helps switch to BT2020 mode if the BT2020 encoded video stream
    1705                 :            :  *     is being played by the user, same for any other colorspace. Thereby
    1706                 :            :  *     giving a good visual experience to users.
    1707                 :            :  *
    1708                 :            :  *     The expectation from userspace is that it should parse the EDID
    1709                 :            :  *     and get supported colorspaces. Use this property and switch to the
    1710                 :            :  *     one supported. Sink supported colorspaces should be retrieved by
    1711                 :            :  *     userspace from EDID and driver will not explicitly expose them.
    1712                 :            :  *
    1713                 :            :  *     Basically the expectation from userspace is:
    1714                 :            :  *      - Set up CRTC DEGAMMA/CTM/GAMMA to convert to some sink
    1715                 :            :  *        colorspace
    1716                 :            :  *      - Set this new property to let the sink know what it
    1717                 :            :  *        converted the CRTC output to.
    1718                 :            :  *      - This property is just to inform sink what colorspace
    1719                 :            :  *        source is trying to drive.
    1720                 :            :  *
    1721                 :            :  * Because between HDMI and DP have different colorspaces,
    1722                 :            :  * drm_mode_create_hdmi_colorspace_property() is used for HDMI connector and
    1723                 :            :  * drm_mode_create_dp_colorspace_property() is used for DP connector.
    1724                 :            :  */
    1725                 :            : 
    1726                 :            : /**
    1727                 :            :  * drm_mode_create_hdmi_colorspace_property - create hdmi colorspace property
    1728                 :            :  * @connector: connector to create the Colorspace property on.
    1729                 :            :  *
    1730                 :            :  * Called by a driver the first time it's needed, must be attached to desired
    1731                 :            :  * HDMI connectors.
    1732                 :            :  *
    1733                 :            :  * Returns:
    1734                 :            :  * Zero on success, negative errono on failure.
    1735                 :            :  */
    1736                 :          0 : int drm_mode_create_hdmi_colorspace_property(struct drm_connector *connector)
    1737                 :            : {
    1738                 :          0 :         struct drm_device *dev = connector->dev;
    1739                 :            : 
    1740         [ #  # ]:          0 :         if (connector->colorspace_property)
    1741                 :            :                 return 0;
    1742                 :            : 
    1743                 :          0 :         connector->colorspace_property =
    1744                 :          0 :                 drm_property_create_enum(dev, DRM_MODE_PROP_ENUM, "Colorspace",
    1745                 :            :                                          hdmi_colorspaces,
    1746                 :            :                                          ARRAY_SIZE(hdmi_colorspaces));
    1747                 :            : 
    1748         [ #  # ]:          0 :         if (!connector->colorspace_property)
    1749                 :          0 :                 return -ENOMEM;
    1750                 :            : 
    1751                 :            :         return 0;
    1752                 :            : }
    1753                 :            : EXPORT_SYMBOL(drm_mode_create_hdmi_colorspace_property);
    1754                 :            : 
    1755                 :            : /**
    1756                 :            :  * drm_mode_create_dp_colorspace_property - create dp colorspace property
    1757                 :            :  * @connector: connector to create the Colorspace property on.
    1758                 :            :  *
    1759                 :            :  * Called by a driver the first time it's needed, must be attached to desired
    1760                 :            :  * DP connectors.
    1761                 :            :  *
    1762                 :            :  * Returns:
    1763                 :            :  * Zero on success, negative errono on failure.
    1764                 :            :  */
    1765                 :          0 : int drm_mode_create_dp_colorspace_property(struct drm_connector *connector)
    1766                 :            : {
    1767                 :          0 :         struct drm_device *dev = connector->dev;
    1768                 :            : 
    1769         [ #  # ]:          0 :         if (connector->colorspace_property)
    1770                 :            :                 return 0;
    1771                 :            : 
    1772                 :          0 :         connector->colorspace_property =
    1773                 :          0 :                 drm_property_create_enum(dev, DRM_MODE_PROP_ENUM, "Colorspace",
    1774                 :            :                                          dp_colorspaces,
    1775                 :            :                                          ARRAY_SIZE(dp_colorspaces));
    1776                 :            : 
    1777         [ #  # ]:          0 :         if (!connector->colorspace_property)
    1778                 :          0 :                 return -ENOMEM;
    1779                 :            : 
    1780                 :            :         return 0;
    1781                 :            : }
    1782                 :            : EXPORT_SYMBOL(drm_mode_create_dp_colorspace_property);
    1783                 :            : 
    1784                 :            : /**
    1785                 :            :  * drm_mode_create_content_type_property - create content type property
    1786                 :            :  * @dev: DRM device
    1787                 :            :  *
    1788                 :            :  * Called by a driver the first time it's needed, must be attached to desired
    1789                 :            :  * connectors.
    1790                 :            :  *
    1791                 :            :  * Returns:
    1792                 :            :  * Zero on success, negative errno on failure.
    1793                 :            :  */
    1794                 :          0 : int drm_mode_create_content_type_property(struct drm_device *dev)
    1795                 :            : {
    1796         [ #  # ]:          0 :         if (dev->mode_config.content_type_property)
    1797                 :            :                 return 0;
    1798                 :            : 
    1799                 :          0 :         dev->mode_config.content_type_property =
    1800                 :          0 :                 drm_property_create_enum(dev, 0, "content type",
    1801                 :            :                                          drm_content_type_enum_list,
    1802                 :            :                                          ARRAY_SIZE(drm_content_type_enum_list));
    1803                 :            : 
    1804         [ #  # ]:          0 :         if (dev->mode_config.content_type_property == NULL)
    1805                 :          0 :                 return -ENOMEM;
    1806                 :            : 
    1807                 :            :         return 0;
    1808                 :            : }
    1809                 :            : EXPORT_SYMBOL(drm_mode_create_content_type_property);
    1810                 :            : 
    1811                 :            : /**
    1812                 :            :  * drm_mode_create_suggested_offset_properties - create suggests offset properties
    1813                 :            :  * @dev: DRM device
    1814                 :            :  *
    1815                 :            :  * Create the the suggested x/y offset property for connectors.
    1816                 :            :  */
    1817                 :          0 : int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
    1818                 :            : {
    1819   [ #  #  #  # ]:          0 :         if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
    1820                 :            :                 return 0;
    1821                 :            : 
    1822                 :          0 :         dev->mode_config.suggested_x_property =
    1823                 :          0 :                 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
    1824                 :            : 
    1825                 :          0 :         dev->mode_config.suggested_y_property =
    1826                 :          0 :                 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
    1827                 :            : 
    1828   [ #  #  #  # ]:          0 :         if (dev->mode_config.suggested_x_property == NULL ||
    1829                 :            :             dev->mode_config.suggested_y_property == NULL)
    1830                 :          0 :                 return -ENOMEM;
    1831                 :            :         return 0;
    1832                 :            : }
    1833                 :            : EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
    1834                 :            : 
    1835                 :            : /**
    1836                 :            :  * drm_connector_set_path_property - set tile property on connector
    1837                 :            :  * @connector: connector to set property on.
    1838                 :            :  * @path: path to use for property; must not be NULL.
    1839                 :            :  *
    1840                 :            :  * This creates a property to expose to userspace to specify a
    1841                 :            :  * connector path. This is mainly used for DisplayPort MST where
    1842                 :            :  * connectors have a topology and we want to allow userspace to give
    1843                 :            :  * them more meaningful names.
    1844                 :            :  *
    1845                 :            :  * Returns:
    1846                 :            :  * Zero on success, negative errno on failure.
    1847                 :            :  */
    1848                 :          0 : int drm_connector_set_path_property(struct drm_connector *connector,
    1849                 :            :                                     const char *path)
    1850                 :            : {
    1851                 :          0 :         struct drm_device *dev = connector->dev;
    1852                 :          0 :         int ret;
    1853                 :            : 
    1854                 :          0 :         ret = drm_property_replace_global_blob(dev,
    1855                 :            :                                                &connector->path_blob_ptr,
    1856                 :          0 :                                                strlen(path) + 1,
    1857                 :            :                                                path,
    1858                 :            :                                                &connector->base,
    1859                 :            :                                                dev->mode_config.path_property);
    1860                 :          0 :         return ret;
    1861                 :            : }
    1862                 :            : EXPORT_SYMBOL(drm_connector_set_path_property);
    1863                 :            : 
    1864                 :            : /**
    1865                 :            :  * drm_connector_set_tile_property - set tile property on connector
    1866                 :            :  * @connector: connector to set property on.
    1867                 :            :  *
    1868                 :            :  * This looks up the tile information for a connector, and creates a
    1869                 :            :  * property for userspace to parse if it exists. The property is of
    1870                 :            :  * the form of 8 integers using ':' as a separator.
    1871                 :            :  * This is used for dual port tiled displays with DisplayPort SST
    1872                 :            :  * or DisplayPort MST connectors.
    1873                 :            :  *
    1874                 :            :  * Returns:
    1875                 :            :  * Zero on success, errno on failure.
    1876                 :            :  */
    1877                 :          0 : int drm_connector_set_tile_property(struct drm_connector *connector)
    1878                 :            : {
    1879                 :          0 :         struct drm_device *dev = connector->dev;
    1880                 :          0 :         char tile[256];
    1881                 :          0 :         int ret;
    1882                 :            : 
    1883         [ #  # ]:          0 :         if (!connector->has_tile) {
    1884                 :          0 :                 ret  = drm_property_replace_global_blob(dev,
    1885                 :            :                                                         &connector->tile_blob_ptr,
    1886                 :            :                                                         0,
    1887                 :            :                                                         NULL,
    1888                 :            :                                                         &connector->base,
    1889                 :            :                                                         dev->mode_config.tile_property);
    1890                 :          0 :                 return ret;
    1891                 :            :         }
    1892                 :            : 
    1893                 :          0 :         snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
    1894                 :          0 :                  connector->tile_group->id, connector->tile_is_single_monitor,
    1895                 :          0 :                  connector->num_h_tile, connector->num_v_tile,
    1896                 :          0 :                  connector->tile_h_loc, connector->tile_v_loc,
    1897                 :          0 :                  connector->tile_h_size, connector->tile_v_size);
    1898                 :            : 
    1899                 :          0 :         ret = drm_property_replace_global_blob(dev,
    1900                 :            :                                                &connector->tile_blob_ptr,
    1901                 :          0 :                                                strlen(tile) + 1,
    1902                 :            :                                                tile,
    1903                 :            :                                                &connector->base,
    1904                 :            :                                                dev->mode_config.tile_property);
    1905                 :          0 :         return ret;
    1906                 :            : }
    1907                 :            : EXPORT_SYMBOL(drm_connector_set_tile_property);
    1908                 :            : 
    1909                 :            : /**
    1910                 :            :  * drm_connector_update_edid_property - update the edid property of a connector
    1911                 :            :  * @connector: drm connector
    1912                 :            :  * @edid: new value of the edid property
    1913                 :            :  *
    1914                 :            :  * This function creates a new blob modeset object and assigns its id to the
    1915                 :            :  * connector's edid property.
    1916                 :            :  * Since we also parse tile information from EDID's displayID block, we also
    1917                 :            :  * set the connector's tile property here. See drm_connector_set_tile_property()
    1918                 :            :  * for more details.
    1919                 :            :  *
    1920                 :            :  * Returns:
    1921                 :            :  * Zero on success, negative errno on failure.
    1922                 :            :  */
    1923                 :          0 : int drm_connector_update_edid_property(struct drm_connector *connector,
    1924                 :            :                                        const struct edid *edid)
    1925                 :            : {
    1926                 :          0 :         struct drm_device *dev = connector->dev;
    1927                 :          0 :         size_t size = 0;
    1928                 :          0 :         int ret;
    1929                 :            : 
    1930                 :            :         /* ignore requests to set edid when overridden */
    1931         [ #  # ]:          0 :         if (connector->override_edid)
    1932                 :            :                 return 0;
    1933                 :            : 
    1934         [ #  # ]:          0 :         if (edid)
    1935                 :          0 :                 size = EDID_LENGTH * (1 + edid->extensions);
    1936                 :            : 
    1937                 :            :         /* Set the display info, using edid if available, otherwise
    1938                 :            :          * reseting the values to defaults. This duplicates the work
    1939                 :            :          * done in drm_add_edid_modes, but that function is not
    1940                 :            :          * consistently called before this one in all drivers and the
    1941                 :            :          * computation is cheap enough that it seems better to
    1942                 :            :          * duplicate it rather than attempt to ensure some arbitrary
    1943                 :            :          * ordering of calls.
    1944                 :            :          */
    1945         [ #  # ]:          0 :         if (edid)
    1946                 :          0 :                 drm_add_display_info(connector, edid);
    1947                 :            :         else
    1948                 :          0 :                 drm_reset_display_info(connector);
    1949                 :            : 
    1950                 :          0 :         drm_object_property_set_value(&connector->base,
    1951                 :            :                                       dev->mode_config.non_desktop_property,
    1952                 :          0 :                                       connector->display_info.non_desktop);
    1953                 :            : 
    1954                 :          0 :         ret = drm_property_replace_global_blob(dev,
    1955                 :            :                                                &connector->edid_blob_ptr,
    1956                 :            :                                                size,
    1957                 :            :                                                edid,
    1958                 :            :                                                &connector->base,
    1959                 :            :                                                dev->mode_config.edid_property);
    1960         [ #  # ]:          0 :         if (ret)
    1961                 :            :                 return ret;
    1962                 :          0 :         return drm_connector_set_tile_property(connector);
    1963                 :            : }
    1964                 :            : EXPORT_SYMBOL(drm_connector_update_edid_property);
    1965                 :            : 
    1966                 :            : /**
    1967                 :            :  * drm_connector_set_link_status_property - Set link status property of a connector
    1968                 :            :  * @connector: drm connector
    1969                 :            :  * @link_status: new value of link status property (0: Good, 1: Bad)
    1970                 :            :  *
    1971                 :            :  * In usual working scenario, this link status property will always be set to
    1972                 :            :  * "GOOD". If something fails during or after a mode set, the kernel driver
    1973                 :            :  * may set this link status property to "BAD". The caller then needs to send a
    1974                 :            :  * hotplug uevent for userspace to re-check the valid modes through
    1975                 :            :  * GET_CONNECTOR_IOCTL and retry modeset.
    1976                 :            :  *
    1977                 :            :  * Note: Drivers cannot rely on userspace to support this property and
    1978                 :            :  * issue a modeset. As such, they may choose to handle issues (like
    1979                 :            :  * re-training a link) without userspace's intervention.
    1980                 :            :  *
    1981                 :            :  * The reason for adding this property is to handle link training failures, but
    1982                 :            :  * it is not limited to DP or link training. For example, if we implement
    1983                 :            :  * asynchronous setcrtc, this property can be used to report any failures in that.
    1984                 :            :  */
    1985                 :          0 : void drm_connector_set_link_status_property(struct drm_connector *connector,
    1986                 :            :                                             uint64_t link_status)
    1987                 :            : {
    1988                 :          0 :         struct drm_device *dev = connector->dev;
    1989                 :            : 
    1990                 :          0 :         drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
    1991                 :          0 :         connector->state->link_status = link_status;
    1992                 :          0 :         drm_modeset_unlock(&dev->mode_config.connection_mutex);
    1993                 :          0 : }
    1994                 :            : EXPORT_SYMBOL(drm_connector_set_link_status_property);
    1995                 :            : 
    1996                 :            : /**
    1997                 :            :  * drm_connector_attach_max_bpc_property - attach "max bpc" property
    1998                 :            :  * @connector: connector to attach max bpc property on.
    1999                 :            :  * @min: The minimum bit depth supported by the connector.
    2000                 :            :  * @max: The maximum bit depth supported by the connector.
    2001                 :            :  *
    2002                 :            :  * This is used to add support for limiting the bit depth on a connector.
    2003                 :            :  *
    2004                 :            :  * Returns:
    2005                 :            :  * Zero on success, negative errno on failure.
    2006                 :            :  */
    2007                 :          0 : int drm_connector_attach_max_bpc_property(struct drm_connector *connector,
    2008                 :            :                                           int min, int max)
    2009                 :            : {
    2010                 :          0 :         struct drm_device *dev = connector->dev;
    2011                 :          0 :         struct drm_property *prop;
    2012                 :            : 
    2013                 :          0 :         prop = connector->max_bpc_property;
    2014         [ #  # ]:          0 :         if (!prop) {
    2015                 :          0 :                 prop = drm_property_create_range(dev, 0, "max bpc", min, max);
    2016         [ #  # ]:          0 :                 if (!prop)
    2017                 :            :                         return -ENOMEM;
    2018                 :            : 
    2019                 :          0 :                 connector->max_bpc_property = prop;
    2020                 :            :         }
    2021                 :            : 
    2022                 :          0 :         drm_object_attach_property(&connector->base, prop, max);
    2023                 :          0 :         connector->state->max_requested_bpc = max;
    2024                 :          0 :         connector->state->max_bpc = max;
    2025                 :            : 
    2026                 :          0 :         return 0;
    2027                 :            : }
    2028                 :            : EXPORT_SYMBOL(drm_connector_attach_max_bpc_property);
    2029                 :            : 
    2030                 :            : /**
    2031                 :            :  * drm_connector_set_vrr_capable_property - sets the variable refresh rate
    2032                 :            :  * capable property for a connector
    2033                 :            :  * @connector: drm connector
    2034                 :            :  * @capable: True if the connector is variable refresh rate capable
    2035                 :            :  *
    2036                 :            :  * Should be used by atomic drivers to update the indicated support for
    2037                 :            :  * variable refresh rate over a connector.
    2038                 :            :  */
    2039                 :          0 : void drm_connector_set_vrr_capable_property(
    2040                 :            :                 struct drm_connector *connector, bool capable)
    2041                 :            : {
    2042                 :          0 :         drm_object_property_set_value(&connector->base,
    2043                 :            :                                       connector->vrr_capable_property,
    2044                 :            :                                       capable);
    2045                 :          0 : }
    2046                 :            : EXPORT_SYMBOL(drm_connector_set_vrr_capable_property);
    2047                 :            : 
    2048                 :            : /**
    2049                 :            :  * drm_connector_init_panel_orientation_property -
    2050                 :            :  *      initialize the connecters panel_orientation property
    2051                 :            :  * @connector: connector for which to init the panel-orientation property.
    2052                 :            :  * @width: width in pixels of the panel, used for panel quirk detection
    2053                 :            :  * @height: height in pixels of the panel, used for panel quirk detection
    2054                 :            :  *
    2055                 :            :  * This function should only be called for built-in panels, after setting
    2056                 :            :  * connector->display_info.panel_orientation first (if known).
    2057                 :            :  *
    2058                 :            :  * This function will check for platform specific (e.g. DMI based) quirks
    2059                 :            :  * overriding display_info.panel_orientation first, then if panel_orientation
    2060                 :            :  * is not DRM_MODE_PANEL_ORIENTATION_UNKNOWN it will attach the
    2061                 :            :  * "panel orientation" property to the connector.
    2062                 :            :  *
    2063                 :            :  * Returns:
    2064                 :            :  * Zero on success, negative errno on failure.
    2065                 :            :  */
    2066                 :          0 : int drm_connector_init_panel_orientation_property(
    2067                 :            :         struct drm_connector *connector, int width, int height)
    2068                 :            : {
    2069                 :          0 :         struct drm_device *dev = connector->dev;
    2070                 :          0 :         struct drm_display_info *info = &connector->display_info;
    2071                 :          0 :         struct drm_property *prop;
    2072                 :          0 :         int orientation_quirk;
    2073                 :            : 
    2074                 :          0 :         orientation_quirk = drm_get_panel_orientation_quirk(width, height);
    2075         [ #  # ]:          0 :         if (orientation_quirk != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
    2076                 :          0 :                 info->panel_orientation = orientation_quirk;
    2077                 :            : 
    2078         [ #  # ]:          0 :         if (info->panel_orientation == DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
    2079                 :            :                 return 0;
    2080                 :            : 
    2081                 :          0 :         prop = dev->mode_config.panel_orientation_property;
    2082         [ #  # ]:          0 :         if (!prop) {
    2083                 :          0 :                 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
    2084                 :            :                                 "panel orientation",
    2085                 :            :                                 drm_panel_orientation_enum_list,
    2086                 :            :                                 ARRAY_SIZE(drm_panel_orientation_enum_list));
    2087         [ #  # ]:          0 :                 if (!prop)
    2088                 :            :                         return -ENOMEM;
    2089                 :            : 
    2090                 :          0 :                 dev->mode_config.panel_orientation_property = prop;
    2091                 :            :         }
    2092                 :            : 
    2093                 :          0 :         drm_object_attach_property(&connector->base, prop,
    2094                 :          0 :                                    info->panel_orientation);
    2095                 :          0 :         return 0;
    2096                 :            : }
    2097                 :            : EXPORT_SYMBOL(drm_connector_init_panel_orientation_property);
    2098                 :            : 
    2099                 :          0 : int drm_connector_set_obj_prop(struct drm_mode_object *obj,
    2100                 :            :                                     struct drm_property *property,
    2101                 :            :                                     uint64_t value)
    2102                 :            : {
    2103                 :          0 :         int ret = -EINVAL;
    2104                 :          0 :         struct drm_connector *connector = obj_to_connector(obj);
    2105                 :            : 
    2106                 :            :         /* Do DPMS ourselves */
    2107         [ #  # ]:          0 :         if (property == connector->dev->mode_config.dpms_property) {
    2108                 :          0 :                 ret = (*connector->funcs->dpms)(connector, (int)value);
    2109         [ #  # ]:          0 :         } else if (connector->funcs->set_property)
    2110                 :          0 :                 ret = connector->funcs->set_property(connector, property, value);
    2111                 :            : 
    2112         [ #  # ]:          0 :         if (!ret)
    2113                 :          0 :                 drm_object_property_set_value(&connector->base, property, value);
    2114                 :          0 :         return ret;
    2115                 :            : }
    2116                 :            : 
    2117                 :          0 : int drm_connector_property_set_ioctl(struct drm_device *dev,
    2118                 :            :                                      void *data, struct drm_file *file_priv)
    2119                 :            : {
    2120                 :          0 :         struct drm_mode_connector_set_property *conn_set_prop = data;
    2121                 :          0 :         struct drm_mode_obj_set_property obj_set_prop = {
    2122                 :          0 :                 .value = conn_set_prop->value,
    2123                 :          0 :                 .prop_id = conn_set_prop->prop_id,
    2124                 :          0 :                 .obj_id = conn_set_prop->connector_id,
    2125                 :            :                 .obj_type = DRM_MODE_OBJECT_CONNECTOR
    2126                 :            :         };
    2127                 :            : 
    2128                 :            :         /* It does all the locking and checking we need */
    2129                 :          0 :         return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
    2130                 :            : }
    2131                 :            : 
    2132                 :          0 : static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
    2133                 :            : {
    2134                 :            :         /* For atomic drivers only state objects are synchronously updated and
    2135                 :            :          * protected by modeset locks, so check those first. */
    2136                 :          0 :         if (connector->state)
    2137                 :          0 :                 return connector->state->best_encoder;
    2138                 :            :         return connector->encoder;
    2139                 :            : }
    2140                 :            : 
    2141                 :            : static bool
    2142                 :            : drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
    2143                 :            :                              const struct list_head *export_list,
    2144                 :            :                              const struct drm_file *file_priv)
    2145                 :            : {
    2146                 :            :         /*
    2147                 :            :          * If user-space hasn't configured the driver to expose the stereo 3D
    2148                 :            :          * modes, don't expose them.
    2149                 :            :          */
    2150                 :            :         if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
    2151                 :            :                 return false;
    2152                 :            :         /*
    2153                 :            :          * If user-space hasn't configured the driver to expose the modes
    2154                 :            :          * with aspect-ratio, don't expose them. However if such a mode
    2155                 :            :          * is unique, let it be exposed, but reset the aspect-ratio flags
    2156                 :            :          * while preparing the list of user-modes.
    2157                 :            :          */
    2158                 :            :         if (!file_priv->aspect_ratio_allowed) {
    2159                 :            :                 struct drm_display_mode *mode_itr;
    2160                 :            : 
    2161                 :            :                 list_for_each_entry(mode_itr, export_list, export_head)
    2162                 :            :                         if (drm_mode_match(mode_itr, mode,
    2163                 :            :                                            DRM_MODE_MATCH_TIMINGS |
    2164                 :            :                                            DRM_MODE_MATCH_CLOCK |
    2165                 :            :                                            DRM_MODE_MATCH_FLAGS |
    2166                 :            :                                            DRM_MODE_MATCH_3D_FLAGS))
    2167                 :            :                                 return false;
    2168                 :            :         }
    2169                 :            : 
    2170                 :            :         return true;
    2171                 :            : }
    2172                 :            : 
    2173                 :          0 : int drm_mode_getconnector(struct drm_device *dev, void *data,
    2174                 :            :                           struct drm_file *file_priv)
    2175                 :            : {
    2176                 :          0 :         struct drm_mode_get_connector *out_resp = data;
    2177                 :          0 :         struct drm_connector *connector;
    2178                 :          0 :         struct drm_encoder *encoder;
    2179                 :          0 :         struct drm_display_mode *mode;
    2180                 :          0 :         int mode_count = 0;
    2181                 :          0 :         int encoders_count = 0;
    2182                 :          0 :         int ret = 0;
    2183                 :          0 :         int copied = 0;
    2184                 :          0 :         struct drm_mode_modeinfo u_mode;
    2185                 :          0 :         struct drm_mode_modeinfo __user *mode_ptr;
    2186                 :          0 :         uint32_t __user *encoder_ptr;
    2187                 :          0 :         LIST_HEAD(export_list);
    2188                 :            : 
    2189         [ #  # ]:          0 :         if (!drm_core_check_feature(dev, DRIVER_MODESET))
    2190                 :            :                 return -EOPNOTSUPP;
    2191                 :            : 
    2192                 :          0 :         memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
    2193                 :            : 
    2194                 :          0 :         connector = drm_connector_lookup(dev, file_priv, out_resp->connector_id);
    2195         [ #  # ]:          0 :         if (!connector)
    2196                 :            :                 return -ENOENT;
    2197                 :            : 
    2198         [ #  # ]:          0 :         encoders_count = hweight32(connector->possible_encoders);
    2199                 :            : 
    2200   [ #  #  #  # ]:          0 :         if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
    2201                 :          0 :                 copied = 0;
    2202                 :          0 :                 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
    2203                 :            : 
    2204   [ #  #  #  # ]:          0 :                 drm_connector_for_each_possible_encoder(connector, encoder) {
    2205         [ #  # ]:          0 :                         if (put_user(encoder->base.id, encoder_ptr + copied)) {
    2206                 :          0 :                                 ret = -EFAULT;
    2207                 :          0 :                                 goto out;
    2208                 :            :                         }
    2209                 :          0 :                         copied++;
    2210                 :            :                 }
    2211                 :            :         }
    2212                 :          0 :         out_resp->count_encoders = encoders_count;
    2213                 :            : 
    2214                 :          0 :         out_resp->connector_id = connector->base.id;
    2215                 :          0 :         out_resp->connector_type = connector->connector_type;
    2216                 :          0 :         out_resp->connector_type_id = connector->connector_type_id;
    2217                 :            : 
    2218                 :          0 :         mutex_lock(&dev->mode_config.mutex);
    2219         [ #  # ]:          0 :         if (out_resp->count_modes == 0) {
    2220                 :          0 :                 connector->funcs->fill_modes(connector,
    2221                 :          0 :                                              dev->mode_config.max_width,
    2222                 :          0 :                                              dev->mode_config.max_height);
    2223                 :            :         }
    2224                 :            : 
    2225                 :          0 :         out_resp->mm_width = connector->display_info.width_mm;
    2226                 :          0 :         out_resp->mm_height = connector->display_info.height_mm;
    2227                 :          0 :         out_resp->subpixel = connector->display_info.subpixel_order;
    2228                 :          0 :         out_resp->connection = connector->status;
    2229                 :            : 
    2230                 :            :         /* delayed so we get modes regardless of pre-fill_modes state */
    2231         [ #  # ]:          0 :         list_for_each_entry(mode, &connector->modes, head)
    2232         [ #  # ]:          0 :                 if (drm_mode_expose_to_userspace(mode, &export_list,
    2233                 :            :                                                  file_priv)) {
    2234                 :          0 :                         list_add_tail(&mode->export_head, &export_list);
    2235                 :          0 :                         mode_count++;
    2236                 :            :                 }
    2237                 :            : 
    2238                 :            :         /*
    2239                 :            :          * This ioctl is called twice, once to determine how much space is
    2240                 :            :          * needed, and the 2nd time to fill it.
    2241                 :            :          * The modes that need to be exposed to the user are maintained in the
    2242                 :            :          * 'export_list'. When the ioctl is called first time to determine the,
    2243                 :            :          * space, the export_list gets filled, to find the no.of modes. In the
    2244                 :            :          * 2nd time, the user modes are filled, one by one from the export_list.
    2245                 :            :          */
    2246   [ #  #  #  # ]:          0 :         if ((out_resp->count_modes >= mode_count) && mode_count) {
    2247                 :          0 :                 copied = 0;
    2248                 :          0 :                 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
    2249         [ #  # ]:          0 :                 list_for_each_entry(mode, &export_list, export_head) {
    2250                 :          0 :                         drm_mode_convert_to_umode(&u_mode, mode);
    2251                 :            :                         /*
    2252                 :            :                          * Reset aspect ratio flags of user-mode, if modes with
    2253                 :            :                          * aspect-ratio are not supported.
    2254                 :            :                          */
    2255         [ #  # ]:          0 :                         if (!file_priv->aspect_ratio_allowed)
    2256                 :          0 :                                 u_mode.flags &= ~DRM_MODE_FLAG_PIC_AR_MASK;
    2257         [ #  # ]:          0 :                         if (copy_to_user(mode_ptr + copied,
    2258                 :            :                                          &u_mode, sizeof(u_mode))) {
    2259                 :          0 :                                 ret = -EFAULT;
    2260                 :          0 :                                 mutex_unlock(&dev->mode_config.mutex);
    2261                 :            : 
    2262                 :          0 :                                 goto out;
    2263                 :            :                         }
    2264                 :          0 :                         copied++;
    2265                 :            :                 }
    2266                 :            :         }
    2267                 :          0 :         out_resp->count_modes = mode_count;
    2268                 :          0 :         mutex_unlock(&dev->mode_config.mutex);
    2269                 :            : 
    2270                 :          0 :         drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
    2271         [ #  # ]:          0 :         encoder = drm_connector_get_encoder(connector);
    2272         [ #  # ]:          0 :         if (encoder)
    2273                 :          0 :                 out_resp->encoder_id = encoder->base.id;
    2274                 :            :         else
    2275                 :          0 :                 out_resp->encoder_id = 0;
    2276                 :            : 
    2277                 :            :         /* Only grab properties after probing, to make sure EDID and other
    2278                 :            :          * properties reflect the latest status. */
    2279                 :          0 :         ret = drm_mode_object_get_properties(&connector->base, file_priv->atomic,
    2280                 :          0 :                         (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
    2281                 :          0 :                         (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
    2282                 :          0 :                         &out_resp->count_props);
    2283                 :          0 :         drm_modeset_unlock(&dev->mode_config.connection_mutex);
    2284                 :            : 
    2285                 :          0 : out:
    2286                 :          0 :         drm_connector_put(connector);
    2287                 :            : 
    2288                 :          0 :         return ret;
    2289                 :            : }
    2290                 :            : 
    2291                 :            : 
    2292                 :            : /**
    2293                 :            :  * DOC: Tile group
    2294                 :            :  *
    2295                 :            :  * Tile groups are used to represent tiled monitors with a unique integer
    2296                 :            :  * identifier. Tiled monitors using DisplayID v1.3 have a unique 8-byte handle,
    2297                 :            :  * we store this in a tile group, so we have a common identifier for all tiles
    2298                 :            :  * in a monitor group. The property is called "TILE". Drivers can manage tile
    2299                 :            :  * groups using drm_mode_create_tile_group(), drm_mode_put_tile_group() and
    2300                 :            :  * drm_mode_get_tile_group(). But this is only needed for internal panels where
    2301                 :            :  * the tile group information is exposed through a non-standard way.
    2302                 :            :  */
    2303                 :            : 
    2304                 :          0 : static void drm_tile_group_free(struct kref *kref)
    2305                 :            : {
    2306                 :          0 :         struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
    2307                 :          0 :         struct drm_device *dev = tg->dev;
    2308                 :          0 :         mutex_lock(&dev->mode_config.idr_mutex);
    2309                 :          0 :         idr_remove(&dev->mode_config.tile_idr, tg->id);
    2310                 :          0 :         mutex_unlock(&dev->mode_config.idr_mutex);
    2311                 :          0 :         kfree(tg);
    2312                 :          0 : }
    2313                 :            : 
    2314                 :            : /**
    2315                 :            :  * drm_mode_put_tile_group - drop a reference to a tile group.
    2316                 :            :  * @dev: DRM device
    2317                 :            :  * @tg: tile group to drop reference to.
    2318                 :            :  *
    2319                 :            :  * drop reference to tile group and free if 0.
    2320                 :            :  */
    2321                 :          0 : void drm_mode_put_tile_group(struct drm_device *dev,
    2322                 :            :                              struct drm_tile_group *tg)
    2323                 :            : {
    2324                 :          0 :         kref_put(&tg->refcount, drm_tile_group_free);
    2325                 :          0 : }
    2326                 :            : EXPORT_SYMBOL(drm_mode_put_tile_group);
    2327                 :            : 
    2328                 :            : /**
    2329                 :            :  * drm_mode_get_tile_group - get a reference to an existing tile group
    2330                 :            :  * @dev: DRM device
    2331                 :            :  * @topology: 8-bytes unique per monitor.
    2332                 :            :  *
    2333                 :            :  * Use the unique bytes to get a reference to an existing tile group.
    2334                 :            :  *
    2335                 :            :  * RETURNS:
    2336                 :            :  * tile group or NULL if not found.
    2337                 :            :  */
    2338                 :          0 : struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
    2339                 :            :                                                char topology[8])
    2340                 :            : {
    2341                 :          0 :         struct drm_tile_group *tg;
    2342                 :          0 :         int id;
    2343                 :          0 :         mutex_lock(&dev->mode_config.idr_mutex);
    2344         [ #  # ]:          0 :         idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
    2345         [ #  # ]:          0 :                 if (!memcmp(tg->group_data, topology, 8)) {
    2346         [ #  # ]:          0 :                         if (!kref_get_unless_zero(&tg->refcount))
    2347                 :          0 :                                 tg = NULL;
    2348                 :          0 :                         mutex_unlock(&dev->mode_config.idr_mutex);
    2349                 :          0 :                         return tg;
    2350                 :            :                 }
    2351                 :            :         }
    2352                 :          0 :         mutex_unlock(&dev->mode_config.idr_mutex);
    2353                 :          0 :         return NULL;
    2354                 :            : }
    2355                 :            : EXPORT_SYMBOL(drm_mode_get_tile_group);
    2356                 :            : 
    2357                 :            : /**
    2358                 :            :  * drm_mode_create_tile_group - create a tile group from a displayid description
    2359                 :            :  * @dev: DRM device
    2360                 :            :  * @topology: 8-bytes unique per monitor.
    2361                 :            :  *
    2362                 :            :  * Create a tile group for the unique monitor, and get a unique
    2363                 :            :  * identifier for the tile group.
    2364                 :            :  *
    2365                 :            :  * RETURNS:
    2366                 :            :  * new tile group or NULL.
    2367                 :            :  */
    2368                 :          0 : struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
    2369                 :            :                                                   char topology[8])
    2370                 :            : {
    2371                 :          0 :         struct drm_tile_group *tg;
    2372                 :          0 :         int ret;
    2373                 :            : 
    2374                 :          0 :         tg = kzalloc(sizeof(*tg), GFP_KERNEL);
    2375         [ #  # ]:          0 :         if (!tg)
    2376                 :            :                 return NULL;
    2377                 :            : 
    2378                 :          0 :         kref_init(&tg->refcount);
    2379                 :          0 :         memcpy(tg->group_data, topology, 8);
    2380                 :          0 :         tg->dev = dev;
    2381                 :            : 
    2382                 :          0 :         mutex_lock(&dev->mode_config.idr_mutex);
    2383                 :          0 :         ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
    2384         [ #  # ]:          0 :         if (ret >= 0) {
    2385                 :          0 :                 tg->id = ret;
    2386                 :            :         } else {
    2387                 :          0 :                 kfree(tg);
    2388                 :          0 :                 tg = NULL;
    2389                 :            :         }
    2390                 :            : 
    2391                 :          0 :         mutex_unlock(&dev->mode_config.idr_mutex);
    2392                 :          0 :         return tg;
    2393                 :            : }
    2394                 :            : EXPORT_SYMBOL(drm_mode_create_tile_group);

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