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214 lines
5.6 KiB
214 lines
5.6 KiB
/*
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* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef _DP_LINK_H_
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#define _DP_LINK_H_
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#include "dp_aux.h"
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#define DS_PORT_STATUS_CHANGED 0x200
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#define DP_TEST_BIT_DEPTH_UNKNOWN 0xFFFFFFFF
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#define DP_LINK_ENUM_STR(x) #x
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enum dp_link_voltage_level {
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DP_LINK_VOLTAGE_LEVEL_0 = 0,
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DP_LINK_VOLTAGE_LEVEL_1 = 1,
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DP_LINK_VOLTAGE_LEVEL_2 = 2,
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DP_LINK_VOLTAGE_MAX = DP_LINK_VOLTAGE_LEVEL_2,
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};
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enum dp_link_preemaphasis_level {
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DP_LINK_PRE_EMPHASIS_LEVEL_0 = 0,
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DP_LINK_PRE_EMPHASIS_LEVEL_1 = 1,
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DP_LINK_PRE_EMPHASIS_LEVEL_2 = 2,
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DP_LINK_PRE_EMPHASIS_MAX = DP_LINK_PRE_EMPHASIS_LEVEL_2,
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};
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struct dp_link_sink_count {
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u32 count;
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bool cp_ready;
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};
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struct dp_link_test_video {
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u32 test_video_pattern;
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u32 test_bit_depth;
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u32 test_dyn_range;
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u32 test_h_total;
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u32 test_v_total;
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u32 test_h_start;
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u32 test_v_start;
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u32 test_hsync_pol;
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u32 test_hsync_width;
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u32 test_vsync_pol;
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u32 test_vsync_width;
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u32 test_h_width;
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u32 test_v_height;
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u32 test_rr_d;
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u32 test_rr_n;
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};
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struct dp_link_test_audio {
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u32 test_audio_sampling_rate;
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u32 test_audio_channel_count;
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u32 test_audio_pattern_type;
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u32 test_audio_period_ch_1;
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u32 test_audio_period_ch_2;
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u32 test_audio_period_ch_3;
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u32 test_audio_period_ch_4;
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u32 test_audio_period_ch_5;
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u32 test_audio_period_ch_6;
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u32 test_audio_period_ch_7;
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u32 test_audio_period_ch_8;
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};
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struct dp_link_hdcp_status {
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int hdcp_state;
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int hdcp_version;
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};
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struct dp_link_phy_params {
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u32 phy_test_pattern_sel;
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u8 v_level;
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u8 p_level;
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};
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struct dp_link_params {
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u32 lane_count;
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u32 bw_code;
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};
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static inline char *dp_link_get_test_name(u32 test_requested)
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{
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switch (test_requested) {
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case DP_TEST_LINK_TRAINING:
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return DP_LINK_ENUM_STR(DP_TEST_LINK_TRAINING);
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case DP_TEST_LINK_VIDEO_PATTERN:
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return DP_LINK_ENUM_STR(DP_TEST_LINK_VIDEO_PATTERN);
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case DP_TEST_LINK_EDID_READ:
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return DP_LINK_ENUM_STR(DP_TEST_LINK_EDID_READ);
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case DP_TEST_LINK_PHY_TEST_PATTERN:
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return DP_LINK_ENUM_STR(DP_TEST_LINK_PHY_TEST_PATTERN);
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case DP_TEST_LINK_AUDIO_PATTERN:
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return DP_LINK_ENUM_STR(DP_TEST_LINK_AUDIO_PATTERN);
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case DS_PORT_STATUS_CHANGED:
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return DP_LINK_ENUM_STR(DS_PORT_STATUS_CHANGED);
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case DP_LINK_STATUS_UPDATED:
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return DP_LINK_ENUM_STR(DP_LINK_STATUS_UPDATED);
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default:
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return "unknown";
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}
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}
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struct dp_link {
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u32 sink_request;
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u32 test_response;
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struct dp_link_sink_count sink_count;
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struct dp_link_test_video test_video;
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struct dp_link_test_audio test_audio;
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struct dp_link_phy_params phy_params;
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struct dp_link_params link_params;
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struct dp_link_hdcp_status hdcp_status;
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u32 (*get_test_bits_depth)(struct dp_link *dp_link, u32 bpp);
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int (*process_request)(struct dp_link *dp_link);
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int (*get_colorimetry_config)(struct dp_link *dp_link);
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int (*adjust_levels)(struct dp_link *dp_link, u8 *link_status);
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int (*send_psm_request)(struct dp_link *dp_link, bool req);
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void (*send_test_response)(struct dp_link *dp_link);
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int (*psm_config)(struct dp_link *dp_link,
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struct drm_dp_link *link_info, bool enable);
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void (*send_edid_checksum)(struct dp_link *dp_link, u8 checksum);
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};
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static inline char *dp_link_get_phy_test_pattern(u32 phy_test_pattern_sel)
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{
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switch (phy_test_pattern_sel) {
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case DP_TEST_PHY_PATTERN_NONE:
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return DP_LINK_ENUM_STR(DP_TEST_PHY_PATTERN_NONE);
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case DP_TEST_PHY_PATTERN_D10_2_NO_SCRAMBLING:
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return DP_LINK_ENUM_STR(
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DP_TEST_PHY_PATTERN_D10_2_NO_SCRAMBLING);
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case DP_TEST_PHY_PATTERN_SYMBOL_ERR_MEASUREMENT_CNT:
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return DP_LINK_ENUM_STR(
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DP_TEST_PHY_PATTERN_SYMBOL_ERR_MEASUREMENT_CNT);
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case DP_TEST_PHY_PATTERN_PRBS7:
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return DP_LINK_ENUM_STR(DP_TEST_PHY_PATTERN_PRBS7);
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case DP_TEST_PHY_PATTERN_80_BIT_CUSTOM_PATTERN:
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return DP_LINK_ENUM_STR(
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DP_TEST_PHY_PATTERN_80_BIT_CUSTOM_PATTERN);
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case DP_TEST_PHY_PATTERN_CP2520_PATTERN_1:
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return DP_LINK_ENUM_STR(DP_TEST_PHY_PATTERN_CP2520_PATTERN_1);
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case DP_TEST_PHY_PATTERN_CP2520_PATTERN_2:
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return DP_LINK_ENUM_STR(DP_TEST_PHY_PATTERN_CP2520_PATTERN_2);
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case DP_TEST_PHY_PATTERN_CP2520_PATTERN_3:
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return DP_LINK_ENUM_STR(DP_TEST_PHY_PATTERN_CP2520_PATTERN_3);
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default:
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return "unknown";
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}
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}
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/**
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* mdss_dp_test_bit_depth_to_bpp() - convert test bit depth to bpp
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* @tbd: test bit depth
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*
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* Returns the bits per pixel (bpp) to be used corresponding to the
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* git bit depth value. This function assumes that bit depth has
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* already been validated.
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*/
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static inline u32 dp_link_bit_depth_to_bpp(u32 tbd)
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{
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u32 bpp;
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/*
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* Few simplistic rules and assumptions made here:
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* 1. Bit depth is per color component
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* 2. If bit depth is unknown return 0
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* 3. Assume 3 color components
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*/
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switch (tbd) {
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case DP_TEST_BIT_DEPTH_6:
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bpp = 18;
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break;
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case DP_TEST_BIT_DEPTH_8:
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bpp = 24;
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break;
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case DP_TEST_BIT_DEPTH_10:
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bpp = 30;
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break;
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case DP_TEST_BIT_DEPTH_UNKNOWN:
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default:
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bpp = 0;
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}
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return bpp;
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}
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/**
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* dp_link_get() - get the functionalities of dp test module
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*
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*
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* return: a pointer to dp_link struct
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*/
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struct dp_link *dp_link_get(struct device *dev, struct dp_aux *aux);
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/**
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* dp_link_put() - releases the dp test module's resources
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*
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* @dp_link: an instance of dp_link module
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*
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*/
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void dp_link_put(struct dp_link *dp_link);
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#endif /* _DP_LINK_H_ */
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