| /* |
| * Copyright (c) 2012-2017, The Linux Foundation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| */ |
| |
| #ifndef _DP_LINK_H_ |
| #define _DP_LINK_H_ |
| |
| #include "dp_aux.h" |
| |
| #define DS_PORT_STATUS_CHANGED 0x200 |
| #define DP_TEST_BIT_DEPTH_UNKNOWN 0xFFFFFFFF |
| #define DP_LINK_ENUM_STR(x) #x |
| |
| enum dp_link_voltage_level { |
| DP_LINK_VOLTAGE_LEVEL_0 = 0, |
| DP_LINK_VOLTAGE_LEVEL_1 = 1, |
| DP_LINK_VOLTAGE_LEVEL_2 = 2, |
| DP_LINK_VOLTAGE_MAX = DP_LINK_VOLTAGE_LEVEL_2, |
| }; |
| |
| enum dp_link_preemaphasis_level { |
| DP_LINK_PRE_EMPHASIS_LEVEL_0 = 0, |
| DP_LINK_PRE_EMPHASIS_LEVEL_1 = 1, |
| DP_LINK_PRE_EMPHASIS_LEVEL_2 = 2, |
| DP_LINK_PRE_EMPHASIS_MAX = DP_LINK_PRE_EMPHASIS_LEVEL_2, |
| }; |
| |
| struct dp_link_sink_count { |
| u32 count; |
| bool cp_ready; |
| }; |
| |
| struct dp_link_test_video { |
| u32 test_video_pattern; |
| u32 test_bit_depth; |
| u32 test_dyn_range; |
| u32 test_h_total; |
| u32 test_v_total; |
| u32 test_h_start; |
| u32 test_v_start; |
| u32 test_hsync_pol; |
| u32 test_hsync_width; |
| u32 test_vsync_pol; |
| u32 test_vsync_width; |
| u32 test_h_width; |
| u32 test_v_height; |
| u32 test_rr_d; |
| u32 test_rr_n; |
| }; |
| |
| struct dp_link_test_audio { |
| u32 test_audio_sampling_rate; |
| u32 test_audio_channel_count; |
| u32 test_audio_pattern_type; |
| u32 test_audio_period_ch_1; |
| u32 test_audio_period_ch_2; |
| u32 test_audio_period_ch_3; |
| u32 test_audio_period_ch_4; |
| u32 test_audio_period_ch_5; |
| u32 test_audio_period_ch_6; |
| u32 test_audio_period_ch_7; |
| u32 test_audio_period_ch_8; |
| }; |
| |
| struct dp_link_phy_params { |
| u32 phy_test_pattern_sel; |
| u8 v_level; |
| u8 p_level; |
| }; |
| |
| struct dp_link_params { |
| u32 lane_count; |
| u32 bw_code; |
| }; |
| |
| struct dp_link { |
| u32 sink_request; |
| u32 test_response; |
| |
| struct dp_link_sink_count sink_count; |
| struct dp_link_test_video test_video; |
| struct dp_link_test_audio test_audio; |
| struct dp_link_phy_params phy_params; |
| struct dp_link_params link_params; |
| |
| u32 (*get_test_bits_depth)(struct dp_link *dp_link, u32 bpp); |
| int (*process_request)(struct dp_link *dp_link); |
| int (*get_colorimetry_config)(struct dp_link *dp_link); |
| int (*adjust_levels)(struct dp_link *dp_link, u8 *link_status); |
| int (*send_psm_request)(struct dp_link *dp_link, bool req); |
| void (*send_test_response)(struct dp_link *dp_link); |
| int (*psm_config)(struct dp_link *dp_link, |
| struct drm_dp_link *link_info, bool enable); |
| void (*send_edid_checksum)(struct dp_link *dp_link, u8 checksum); |
| }; |
| |
| static inline char *dp_link_get_phy_test_pattern(u32 phy_test_pattern_sel) |
| { |
| switch (phy_test_pattern_sel) { |
| case DP_TEST_PHY_PATTERN_NONE: |
| return DP_LINK_ENUM_STR(DP_TEST_PHY_PATTERN_NONE); |
| case DP_TEST_PHY_PATTERN_D10_2_NO_SCRAMBLING: |
| return DP_LINK_ENUM_STR( |
| DP_TEST_PHY_PATTERN_D10_2_NO_SCRAMBLING); |
| case DP_TEST_PHY_PATTERN_SYMBOL_ERR_MEASUREMENT_CNT: |
| return DP_LINK_ENUM_STR( |
| DP_TEST_PHY_PATTERN_SYMBOL_ERR_MEASUREMENT_CNT); |
| case DP_TEST_PHY_PATTERN_PRBS7: |
| return DP_LINK_ENUM_STR(DP_TEST_PHY_PATTERN_PRBS7); |
| case DP_TEST_PHY_PATTERN_80_BIT_CUSTOM_PATTERN: |
| return DP_LINK_ENUM_STR( |
| DP_TEST_PHY_PATTERN_80_BIT_CUSTOM_PATTERN); |
| case DP_TEST_PHY_PATTERN_CP2520_PATTERN_1: |
| return DP_LINK_ENUM_STR(DP_TEST_PHY_PATTERN_CP2520_PATTERN_1); |
| case DP_TEST_PHY_PATTERN_CP2520_PATTERN_2: |
| return DP_LINK_ENUM_STR(DP_TEST_PHY_PATTERN_CP2520_PATTERN_2); |
| case DP_TEST_PHY_PATTERN_CP2520_PATTERN_3: |
| return DP_LINK_ENUM_STR(DP_TEST_PHY_PATTERN_CP2520_PATTERN_3); |
| default: |
| return "unknown"; |
| } |
| } |
| |
| /** |
| * mdss_dp_test_bit_depth_to_bpp() - convert test bit depth to bpp |
| * @tbd: test bit depth |
| * |
| * Returns the bits per pixel (bpp) to be used corresponding to the |
| * git bit depth value. This function assumes that bit depth has |
| * already been validated. |
| */ |
| static inline u32 dp_link_bit_depth_to_bpp(u32 tbd) |
| { |
| u32 bpp; |
| |
| /* |
| * Few simplistic rules and assumptions made here: |
| * 1. Bit depth is per color component |
| * 2. If bit depth is unknown return 0 |
| * 3. Assume 3 color components |
| */ |
| switch (tbd) { |
| case DP_TEST_BIT_DEPTH_6: |
| bpp = 18; |
| break; |
| case DP_TEST_BIT_DEPTH_8: |
| bpp = 24; |
| break; |
| case DP_TEST_BIT_DEPTH_10: |
| bpp = 30; |
| break; |
| case DP_TEST_BIT_DEPTH_UNKNOWN: |
| default: |
| bpp = 0; |
| } |
| |
| return bpp; |
| } |
| |
| /** |
| * dp_link_get() - get the functionalities of dp test module |
| * |
| * |
| * return: a pointer to dp_link struct |
| */ |
| struct dp_link *dp_link_get(struct device *dev, struct dp_aux *aux); |
| |
| /** |
| * dp_link_put() - releases the dp test module's resources |
| * |
| * @dp_link: an instance of dp_link module |
| * |
| */ |
| void dp_link_put(struct dp_link *dp_link); |
| |
| #endif /* _DP_LINK_H_ */ |