From 8c8048f207e785707270bc4985d8d4e1673eefb8 Mon Sep 17 00:00:00 2001 From: abdoulaye berthe Date: Fri, 26 Jul 2019 11:25:43 -0400 Subject: [PATCH] drm/amd/display: add automated audio test support Signed-off-by: abdoulaye berthe Reviewed-by: Wenjing Liu Acked-by: Rodrigo Siqueira Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 92 ++++++++++++++++++++++++ drivers/gpu/drm/amd/display/dc/dc_dp_types.h | 48 +++++++++++-- drivers/gpu/drm/amd/display/dc/dc_link.h | 1 + 3 files changed, 134 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c index b814b749..b72db01 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c @@ -2546,6 +2546,92 @@ static void dp_test_send_link_test_pattern(struct dc_link *link) 0); } +static void dp_test_get_audio_test_data(struct dc_link *link, bool disable_video) +{ + union audio_test_mode dpcd_test_mode = {0}; + struct audio_test_pattern_type dpcd_pattern_type = {0}; + union audio_test_pattern_period dpcd_pattern_period[AUDIO_CHANNELS_COUNT] = {0}; + enum dp_test_pattern test_pattern = DP_TEST_PATTERN_AUDIO_OPERATOR_DEFINED; + + struct pipe_ctx *pipes = link->dc->current_state->res_ctx.pipe_ctx; + struct pipe_ctx *pipe_ctx = &pipes[0]; + unsigned int channel_count; + unsigned int channel = 0; + unsigned int modes = 0; + unsigned int sampling_rate_in_hz = 0; + + // get audio test mode and test pattern parameters + core_link_read_dpcd( + link, + DP_TEST_AUDIO_MODE, + &dpcd_test_mode.raw, + sizeof(dpcd_test_mode)); + + core_link_read_dpcd( + link, + DP_TEST_AUDIO_PATTERN_TYPE, + &dpcd_pattern_type.value, + sizeof(dpcd_pattern_type)); + + channel_count = dpcd_test_mode.bits.channel_count + 1; + + // read pattern periods for requested channels when sawTooth pattern is requested + if (dpcd_pattern_type.value == AUDIO_TEST_PATTERN_SAWTOOTH || + dpcd_pattern_type.value == AUDIO_TEST_PATTERN_OPERATOR_DEFINED) { + + test_pattern = (dpcd_pattern_type.value == AUDIO_TEST_PATTERN_SAWTOOTH) ? + DP_TEST_PATTERN_AUDIO_SAWTOOTH : DP_TEST_PATTERN_AUDIO_OPERATOR_DEFINED; + // read period for each channel + for (channel = 0; channel < channel_count; channel++) { + core_link_read_dpcd( + link, + DP_TEST_AUDIO_PERIOD_CH1 + channel, + &dpcd_pattern_period[channel].raw, + sizeof(dpcd_pattern_period[channel])); + } + } + + // translate sampling rate + switch (dpcd_test_mode.bits.sampling_rate) { + case AUDIO_SAMPLING_RATE_32KHZ: + sampling_rate_in_hz = 32000; + break; + case AUDIO_SAMPLING_RATE_44_1KHZ: + sampling_rate_in_hz = 44100; + break; + case AUDIO_SAMPLING_RATE_48KHZ: + sampling_rate_in_hz = 48000; + break; + case AUDIO_SAMPLING_RATE_88_2KHZ: + sampling_rate_in_hz = 88200; + break; + case AUDIO_SAMPLING_RATE_96KHZ: + sampling_rate_in_hz = 96000; + break; + case AUDIO_SAMPLING_RATE_176_4KHZ: + sampling_rate_in_hz = 176400; + break; + case AUDIO_SAMPLING_RATE_192KHZ: + sampling_rate_in_hz = 192000; + break; + default: + sampling_rate_in_hz = 0; + break; + } + + link->audio_test_data.flags.test_requested = 1; + link->audio_test_data.flags.disable_video = disable_video; + link->audio_test_data.sampling_rate = sampling_rate_in_hz; + link->audio_test_data.channel_count = channel_count; + link->audio_test_data.pattern_type = test_pattern; + + if (test_pattern == DP_TEST_PATTERN_AUDIO_SAWTOOTH) { + for (modes = 0; modes < pipe_ctx->stream->audio_info.mode_count; modes++) { + link->audio_test_data.pattern_period[modes] = dpcd_pattern_period[modes].bits.pattern_period; + } + } +} + static void handle_automated_test(struct dc_link *link) { union test_request test_request; @@ -2575,6 +2661,12 @@ static void handle_automated_test(struct dc_link *link) dp_test_send_link_test_pattern(link); test_response.bits.ACK = 1; } + + if (test_request.bits.AUDIO_TEST_PATTERN) { + dp_test_get_audio_test_data(link, test_request.bits.TEST_AUDIO_DISABLED_VIDEO); + test_response.bits.ACK = 1; + } + if (test_request.bits.PHY_TEST_PATTERN) { dp_test_send_phy_test_pattern(link); test_response.bits.ACK = 1; diff --git a/drivers/gpu/drm/amd/display/dc/dc_dp_types.h b/drivers/gpu/drm/amd/display/dc/dc_dp_types.h index 4d3378d..1b68d7c 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_dp_types.h +++ b/drivers/gpu/drm/amd/display/dc/dc_dp_types.h @@ -469,13 +469,13 @@ union training_aux_rd_interval { /* Automated test structures */ union test_request { struct { - uint8_t LINK_TRAINING :1; - uint8_t LINK_TEST_PATTRN :1; - uint8_t EDID_READ :1; - uint8_t PHY_TEST_PATTERN :1; - uint8_t AUDIO_TEST_PATTERN :1; - uint8_t RESERVED :1; - uint8_t TEST_STEREO_3D :1; + uint8_t LINK_TRAINING :1; + uint8_t LINK_TEST_PATTRN :1; + uint8_t EDID_READ :1; + uint8_t PHY_TEST_PATTERN :1; + uint8_t RESERVED :1; + uint8_t AUDIO_TEST_PATTERN :1; + uint8_t TEST_AUDIO_DISABLED_VIDEO :1; } bits; uint8_t raw; }; @@ -534,6 +534,40 @@ union test_misc { unsigned char raw; }; +union audio_test_mode { + struct { + unsigned char sampling_rate :4; + unsigned char channel_count :4; + } bits; + unsigned char raw; +}; + +union audio_test_pattern_period { + struct { + unsigned char pattern_period :4; + unsigned char reserved :4; + } bits; + unsigned char raw; +}; + +struct audio_test_pattern_type { + unsigned char value; +}; + +struct dp_audio_test_data_flags { + uint8_t test_requested :1; + uint8_t disable_video :1; +}; + +struct dp_audio_test_data { + + struct dp_audio_test_data_flags flags; + uint8_t sampling_rate; + uint8_t channel_count; + uint8_t pattern_type; + uint8_t pattern_period[8]; +}; + /* FEC capability DPCD register field bits-*/ union dpcd_fec_capability { struct { diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h index 8971ce3..314d204 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_link.h +++ b/drivers/gpu/drm/amd/display/dc/dc_link.h @@ -94,6 +94,7 @@ struct dc_link { struct dc_lane_settings cur_lane_setting; struct dc_link_settings preferred_link_setting; struct dc_link_training_overrides preferred_training_settings; + struct dp_audio_test_data audio_test_data; uint8_t ddc_hw_inst; -- 2.7.4