From: Wenjing Liu Date: Fri, 22 Mar 2019 23:33:46 +0000 (-0400) Subject: drm/amd/display: prefer preferred link cap over verified link settings X-Git-Tag: v5.4-rc1~971^2~32^2~10 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7ee3769a37d3f9d7352bb0182b0bf3a2beabe523;p=platform%2Fkernel%2Flinux-rpi.git drm/amd/display: prefer preferred link cap over verified link settings [why] when preferred link cap is set, we should always use preferred in all validation. we should not use preferred for some validation but use verified for others. [how] create getter function that gets verified link cap. if preferred is set, return preferred link settings instead. Signed-off-by: Wenjing Liu Reviewed-by: Nikola Cornij Acked-by: Leo Li Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index 51b85a8..2b1cd8b 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -597,6 +597,15 @@ uint32_t dc_link_bandwidth_kbps( } +const struct dc_link_settings *dc_link_get_verified_link_cap( + const struct dc_link *link) +{ + if (link->preferred_link_setting.lane_count != LANE_COUNT_UNKNOWN && + link->preferred_link_setting.link_rate != LINK_RATE_UNKNOWN) + return &link->preferred_link_setting; + return &link->verified_link_cap; +} + static void destruct(struct dc *dc) { dc_release_state(dc->current_state); 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 0d8ef8f..acb4f82 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 @@ -1549,7 +1549,7 @@ bool dp_validate_mode_timing( return true; /* We always use verified link settings */ - link_setting = &link->verified_link_cap; + link_setting = dc_link_get_verified_link_cap(link); /* TODO: DYNAMIC_VALIDATION needs to be implemented */ /*if (flags.DYNAMIC_VALIDATION == 1 && diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h index 7b61fb7..4e26d6e 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_link.h +++ b/drivers/gpu/drm/amd/display/dc/dc_link.h @@ -250,6 +250,9 @@ uint32_t dc_link_bandwidth_kbps( const struct dc_link *link, const struct dc_link_settings *link_setting); +const struct dc_link_settings *dc_link_get_verified_link_cap( + const struct dc_link *link); + bool dc_submit_i2c( struct dc *dc, uint32_t link_index,