c53a07ee48
On the latest kernel, several drm_dp_link functions were removed. This change moves the functions needed downstream. Change-Id: I0a76c52edff450d8bd33edffb9da41c1933b9681 Signed-off-by: Samantha Tran <samtran@codeaurora.org> Signed-off-by: Nilaan Gunabalachandran <ngunabal@codeaurora.org>
246 lines
6.8 KiB
C
246 lines
6.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2012-2019, The Linux Foundation. All rights reserved.
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*
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* Copyright (c) 2008 Keith Packard
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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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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#define DP_PHY_TEST_PATTERN_CP2520_2 0x6
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#define DP_PHY_TEST_PATTERN_CP2520_3 0x7
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struct drm_dp_aux;
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#define DP_LINK_CAP_ENHANCED_FRAMING (1 << 0)
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struct drm_dp_link {
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unsigned char revision;
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unsigned int rate;
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unsigned int num_lanes;
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unsigned long capabilities;
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};
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int dp_link_probe(struct drm_dp_aux *aux, struct drm_dp_link *link);
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int dp_link_power_up(struct drm_dp_aux *aux, struct drm_dp_link *link);
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int dp_link_power_down(struct drm_dp_aux *aux, struct drm_dp_link *link);
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int dp_link_configure(struct drm_dp_aux *aux, struct drm_dp_link *link);
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enum dp_link_voltage_level {
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DP_LINK_VOLTAGE_LEVEL_0,
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DP_LINK_VOLTAGE_LEVEL_1,
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DP_LINK_VOLTAGE_LEVEL_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,
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DP_LINK_PRE_EMPHASIS_LEVEL_1,
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DP_LINK_PRE_EMPHASIS_LEVEL_2,
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DP_LINK_PRE_EMPHASIS_LEVEL_3,
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DP_LINK_PRE_EMPHASIS_MAX = DP_LINK_PRE_EMPHASIS_LEVEL_3,
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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_PHY_TEST_PATTERN_NONE:
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return DP_LINK_ENUM_STR(DP_PHY_TEST_PATTERN_NONE);
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case DP_PHY_TEST_PATTERN_D10_2:
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return DP_LINK_ENUM_STR(
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DP_PHY_TEST_PATTERN_D10_2);
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case DP_PHY_TEST_PATTERN_ERROR_COUNT:
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return DP_LINK_ENUM_STR(
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DP_PHY_TEST_PATTERN_ERROR_COUNT);
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case DP_PHY_TEST_PATTERN_PRBS7:
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return DP_LINK_ENUM_STR(DP_PHY_TEST_PATTERN_PRBS7);
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case DP_PHY_TEST_PATTERN_80BIT_CUSTOM:
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return DP_LINK_ENUM_STR(
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DP_PHY_TEST_PATTERN_80BIT_CUSTOM);
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case DP_PHY_TEST_PATTERN_CP2520:
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return DP_LINK_ENUM_STR(DP_PHY_TEST_PATTERN_CP2520);
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case DP_PHY_TEST_PATTERN_CP2520_2:
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return DP_LINK_ENUM_STR(DP_PHY_TEST_PATTERN_CP2520_2);
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case DP_PHY_TEST_PATTERN_CP2520_3:
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return DP_LINK_ENUM_STR(DP_PHY_TEST_PATTERN_CP2520_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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