[PATCH 01/30] drm/amd/display: add automated audio test support
Rodrigo Siqueira
Rodrigo.Siqueira at amd.com
Tue Nov 12 00:32:55 UTC 2019
From: abdoulaye berthe <abdoulaye.berthe at amd.com>
Signed-off-by: abdoulaye berthe <abdoulaye.berthe at amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu at amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira at amd.com>
---
.../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 65de32fbcc83..68749c205fa0 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 4d3378d61938..1b68d7c13085 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 8971ce3a5480..314d2043cd78 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;
--
2.24.0
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