LCOV - code coverage report
Current view: top level - include/drm - drm_scdc_helper.h (source / functions) Hit Total Coverage
Test: combined.info Lines: 0 4 0.0 %
Date: 2022-04-01 14:35:51 Functions: 0 0 -
Branches: 0 10 0.0 %

           Branch data     Line data    Source code
       1                 :            : /*
       2                 :            :  * Copyright (c) 2015 NVIDIA Corporation. All rights reserved.
       3                 :            :  *
       4                 :            :  * Permission is hereby granted, free of charge, to any person obtaining a
       5                 :            :  * copy of this software and associated documentation files (the "Software"),
       6                 :            :  * to deal in the Software without restriction, including without limitation
       7                 :            :  * the rights to use, copy, modify, merge, publish, distribute, sub license,
       8                 :            :  * and/or sell copies of the Software, and to permit persons to whom the
       9                 :            :  * Software is furnished to do so, subject to the following conditions:
      10                 :            :  *
      11                 :            :  * The above copyright notice and this permission notice (including the
      12                 :            :  * next paragraph) shall be included in all copies or substantial portions
      13                 :            :  * of the Software.
      14                 :            :  *
      15                 :            :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
      16                 :            :  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      17                 :            :  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
      18                 :            :  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      19                 :            :  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
      20                 :            :  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
      21                 :            :  * DEALINGS IN THE SOFTWARE.
      22                 :            :  */
      23                 :            : 
      24                 :            : #ifndef DRM_SCDC_HELPER_H
      25                 :            : #define DRM_SCDC_HELPER_H
      26                 :            : 
      27                 :            : #include <linux/i2c.h>
      28                 :            : #include <linux/types.h>
      29                 :            : 
      30                 :            : #define SCDC_SINK_VERSION 0x01
      31                 :            : 
      32                 :            : #define SCDC_SOURCE_VERSION 0x02
      33                 :            : 
      34                 :            : #define SCDC_UPDATE_0 0x10
      35                 :            : #define  SCDC_READ_REQUEST_TEST (1 << 2)
      36                 :            : #define  SCDC_CED_UPDATE (1 << 1)
      37                 :            : #define  SCDC_STATUS_UPDATE (1 << 0)
      38                 :            : 
      39                 :            : #define SCDC_UPDATE_1 0x11
      40                 :            : 
      41                 :            : #define SCDC_TMDS_CONFIG 0x20
      42                 :            : #define  SCDC_TMDS_BIT_CLOCK_RATIO_BY_40 (1 << 1)
      43                 :            : #define  SCDC_TMDS_BIT_CLOCK_RATIO_BY_10 (0 << 1)
      44                 :            : #define  SCDC_SCRAMBLING_ENABLE (1 << 0)
      45                 :            : 
      46                 :            : #define SCDC_SCRAMBLER_STATUS 0x21
      47                 :            : #define  SCDC_SCRAMBLING_STATUS (1 << 0)
      48                 :            : 
      49                 :            : #define SCDC_CONFIG_0 0x30
      50                 :            : #define  SCDC_READ_REQUEST_ENABLE (1 << 0)
      51                 :            : 
      52                 :            : #define SCDC_STATUS_FLAGS_0 0x40
      53                 :            : #define  SCDC_CH2_LOCK (1 << 3)
      54                 :            : #define  SCDC_CH1_LOCK (1 << 2)
      55                 :            : #define  SCDC_CH0_LOCK (1 << 1)
      56                 :            : #define  SCDC_CH_LOCK_MASK (SCDC_CH2_LOCK | SCDC_CH1_LOCK | SCDC_CH0_LOCK)
      57                 :            : #define  SCDC_CLOCK_DETECT (1 << 0)
      58                 :            : 
      59                 :            : #define SCDC_STATUS_FLAGS_1 0x41
      60                 :            : 
      61                 :            : #define SCDC_ERR_DET_0_L 0x50
      62                 :            : #define SCDC_ERR_DET_0_H 0x51
      63                 :            : #define SCDC_ERR_DET_1_L 0x52
      64                 :            : #define SCDC_ERR_DET_1_H 0x53
      65                 :            : #define SCDC_ERR_DET_2_L 0x54
      66                 :            : #define SCDC_ERR_DET_2_H 0x55
      67                 :            : #define  SCDC_CHANNEL_VALID (1 << 7)
      68                 :            : 
      69                 :            : #define SCDC_ERR_DET_CHECKSUM 0x56
      70                 :            : 
      71                 :            : #define SCDC_TEST_CONFIG_0 0xc0
      72                 :            : #define  SCDC_TEST_READ_REQUEST (1 << 7)
      73                 :            : #define  SCDC_TEST_READ_REQUEST_DELAY(x) ((x) & 0x7f)
      74                 :            : 
      75                 :            : #define SCDC_MANUFACTURER_IEEE_OUI 0xd0
      76                 :            : #define SCDC_MANUFACTURER_IEEE_OUI_SIZE 3
      77                 :            : 
      78                 :            : #define SCDC_DEVICE_ID 0xd3
      79                 :            : #define SCDC_DEVICE_ID_SIZE 8
      80                 :            : 
      81                 :            : #define SCDC_DEVICE_HARDWARE_REVISION 0xdb
      82                 :            : #define  SCDC_GET_DEVICE_HARDWARE_REVISION_MAJOR(x) (((x) >> 4) & 0xf)
      83                 :            : #define  SCDC_GET_DEVICE_HARDWARE_REVISION_MINOR(x) (((x) >> 0) & 0xf)
      84                 :            : 
      85                 :            : #define SCDC_DEVICE_SOFTWARE_MAJOR_REVISION 0xdc
      86                 :            : #define SCDC_DEVICE_SOFTWARE_MINOR_REVISION 0xdd
      87                 :            : 
      88                 :            : #define SCDC_MANUFACTURER_SPECIFIC 0xde
      89                 :            : #define SCDC_MANUFACTURER_SPECIFIC_SIZE 34
      90                 :            : 
      91                 :            : ssize_t drm_scdc_read(struct i2c_adapter *adapter, u8 offset, void *buffer,
      92                 :            :                       size_t size);
      93                 :            : ssize_t drm_scdc_write(struct i2c_adapter *adapter, u8 offset,
      94                 :            :                        const void *buffer, size_t size);
      95                 :            : 
      96                 :            : /**
      97                 :            :  * drm_scdc_readb - read a single byte from SCDC
      98                 :            :  * @adapter: I2C adapter
      99                 :            :  * @offset: offset of register to read
     100                 :            :  * @value: return location for the register value
     101                 :            :  *
     102                 :            :  * Reads a single byte from SCDC. This is a convenience wrapper around the
     103                 :            :  * drm_scdc_read() function.
     104                 :            :  *
     105                 :            :  * Returns:
     106                 :            :  * 0 on success or a negative error code on failure.
     107                 :            :  */
     108                 :          0 : static inline int drm_scdc_readb(struct i2c_adapter *adapter, u8 offset,
     109                 :            :                                  u8 *value)
     110                 :            : {
     111   [ #  #  #  #  :          0 :         return drm_scdc_read(adapter, offset, value, sizeof(*value));
                   #  # ]
     112                 :            : }
     113                 :            : 
     114                 :            : /**
     115                 :            :  * drm_scdc_writeb - write a single byte to SCDC
     116                 :            :  * @adapter: I2C adapter
     117                 :            :  * @offset: offset of register to read
     118                 :            :  * @value: return location for the register value
     119                 :            :  *
     120                 :            :  * Writes a single byte to SCDC. This is a convenience wrapper around the
     121                 :            :  * drm_scdc_write() function.
     122                 :            :  *
     123                 :            :  * Returns:
     124                 :            :  * 0 on success or a negative error code on failure.
     125                 :            :  */
     126                 :          0 : static inline int drm_scdc_writeb(struct i2c_adapter *adapter, u8 offset,
     127                 :            :                                   u8 value)
     128                 :            : {
     129   [ #  #  #  # ]:          0 :         return drm_scdc_write(adapter, offset, &value, sizeof(value));
     130                 :            : }
     131                 :            : 
     132                 :            : bool drm_scdc_get_scrambling_status(struct i2c_adapter *adapter);
     133                 :            : 
     134                 :            : bool drm_scdc_set_scrambling(struct i2c_adapter *adapter, bool enable);
     135                 :            : bool drm_scdc_set_high_tmds_clock_ratio(struct i2c_adapter *adapter, bool set);
     136                 :            : #endif

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