From: Joshua Aberback Date: Tue, 19 Nov 2019 23:46:26 +0000 (-0500) Subject: drm/amd/display: Add interface to adjust DSC max target bpp limit X-Git-Tag: v5.6-rc1~114^2~12^2~168 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=6026be696193db16006058d8d67fedb7c7e6832d;p=linux.git drm/amd/display: Add interface to adjust DSC max target bpp limit [Why] For some use cases we need to be able to adjust the maximum target bpp allowed by DSC policy. [How] New interface dc_dsc_policy_set_max_target_bpp_limit Signed-off-by: Joshua Aberback Reviewed-by: Nikola Cornij Acked-by: Rodrigo Siqueira Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/display/dc/dc_dsc.h b/drivers/gpu/drm/amd/display/dc/dc_dsc.h index 8ec09813ee17..7ece8eb5f48c 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_dsc.h +++ b/drivers/gpu/drm/amd/display/dc/dc_dsc.h @@ -77,4 +77,6 @@ bool dc_dsc_compute_config( void dc_dsc_get_policy_for_timing(const struct dc_crtc_timing *timing, struct dc_dsc_policy *policy); +void dc_dsc_policy_set_max_target_bpp_limit(uint32_t limit); + #endif diff --git a/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c b/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c index d2423ad1fac2..71b048363506 100644 --- a/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c +++ b/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c @@ -29,6 +29,9 @@ /* This module's internal functions */ +/* default DSC policy target bitrate limit is 16bpp */ +static uint32_t dsc_policy_max_target_bpp_limit = 16; + static uint32_t dc_dsc_bandwidth_in_kbps_from_timing( const struct dc_crtc_timing *timing) { @@ -951,7 +954,12 @@ void dc_dsc_get_policy_for_timing(const struct dc_crtc_timing *timing, struct dc default: return; } - /* internal upper limit to 16 bpp */ - if (policy->max_target_bpp > 16) - policy->max_target_bpp = 16; + /* internal upper limit, default 16 bpp */ + if (policy->max_target_bpp > dsc_policy_max_target_bpp_limit) + policy->max_target_bpp = dsc_policy_max_target_bpp_limit; +} + +void dc_dsc_policy_set_max_target_bpp_limit(uint32_t limit) +{ + dsc_policy_max_target_bpp_limit = limit; }