diff options
| author | Wenjing Liu <wenjing.liu@amd.com> | 2021-05-03 21:51:27 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-05-20 05:39:04 +0300 |
| commit | 55bac4a77a86690402dc9462455438c84783394f (patch) | |
| tree | 0299e85afd42acd0c03a72aad78424762c4eda72 /drivers/gpu | |
| parent | 6cb2ce8e31a3ce32819cd4bbfbdaaa8396d0092e (diff) | |
| download | linux-55bac4a77a86690402dc9462455438c84783394f.tar.xz | |
drm/amd/display: determine dp link encoding format from link settings
[how]
Implement a function that determines link encoding format
based on the link settings passed in.
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Reviewed-by: George Shen <George.Shen@amd.com>
Acked-by: Stylon Wang <stylon.wang@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 7 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc_dp_types.h | 5 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h | 1 |
3 files changed, 13 insertions, 0 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 74c62cb86312..b3b9b738e714 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 @@ -4852,4 +4852,11 @@ bool is_edp_ilr_optimization_required(struct dc_link *link, struct dc_crtc_timin return false; } +enum dp_link_encoding dp_get_link_encoding_format(const struct dc_link_settings *link_settings) +{ + if ((link_settings->link_rate >= LINK_RATE_LOW) && + (link_settings->link_rate <= LINK_RATE_HIGH3)) + return DP_8b_10b_ENCODING; + return DP_UNKNOWN_ENCODING; +} 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 fcfde2e04292..1948cd9427d7 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_dp_types.h +++ b/drivers/gpu/drm/amd/display/dc/dc_dp_types.h @@ -98,6 +98,11 @@ enum dc_dp_training_pattern { DP_TRAINING_PATTERN_VIDEOIDLE, }; +enum dp_link_encoding { + DP_UNKNOWN_ENCODING = 0, + DP_8b_10b_ENCODING = 1, +}; + struct dc_link_settings { enum dc_lane_count lane_count; enum dc_link_rate link_rate; diff --git a/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h b/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h index 428842511c03..ffc3f2c63db8 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h +++ b/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h @@ -105,4 +105,5 @@ enum link_training_result dp_check_link_loss_status( struct dc_link *link, const struct link_training_settings *link_training_setting); +enum dp_link_encoding dp_get_link_encoding_format(const struct dc_link_settings *link_settings); #endif /* __DC_LINK_DP_H__ */ |