From: Anusha Srivatsa Date: Tue, 20 Aug 2019 22:30:59 +0000 (-0700) Subject: drm/dp/dsc: Add Support for all BPCs supported by TGL X-Git-Tag: v5.15~4946^2~43^2~327 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=cee508a0bddba1627575de2e41fb8e321fa380a8;p=platform%2Fkernel%2Flinux-starfive.git drm/dp/dsc: Add Support for all BPCs supported by TGL DSC engine on ICL supports only 8 and 10 BPC as the input BPC. But DSC engine in TGL supports 8, 10 and 12 BPC. Add 12 BPC support for DSC while calculating compression configuration. v2: Remove the separate define TGL_DP_DSC_MAX_SUPPORTED_BPC and use the value directly.(More such defines can be removed as part of future patches). (Ville) v3: Use values directly instead of accessing the defines everytime for min and max DSC BPC. Cc: Ville Syrjälä Cc: Manasi Navare Signed-off-by: Anusha Srivatsa Reviewed-by: Manasi Navare Signed-off-by: Manasi Navare Link: https://patchwork.freedesktop.org/patch/msgid/20190820223059.18052-1-anusha.srivatsa@intel.com --- diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 921ad0a..23908da 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -70,8 +70,6 @@ /* DP DSC small joiner has 2 FIFOs each of 640 x 6 bytes */ #define DP_DSC_MAX_SMALL_JOINER_RAM_BUFFER 61440 -#define DP_DSC_MIN_SUPPORTED_BPC 8 -#define DP_DSC_MAX_SUPPORTED_BPC 10 /* DP DSC throughput values used for slice count calculations KPixels/s */ #define DP_DSC_PEAK_PIXEL_RATE 2720000 @@ -1915,11 +1913,17 @@ static int intel_dp_dsc_compute_config(struct intel_dp *intel_dp, if (!intel_dp_supports_dsc(intel_dp, pipe_config)) return -EINVAL; - dsc_max_bpc = min_t(u8, DP_DSC_MAX_SUPPORTED_BPC, - conn_state->max_requested_bpc); + /* Max DSC Input BPC for ICL is 10 and for TGL+ is 12 */ + if (INTEL_GEN(dev_priv) >= 12) + dsc_max_bpc = min_t(u8, 12, conn_state->max_requested_bpc); + else + dsc_max_bpc = min_t(u8, 10, + conn_state->max_requested_bpc); pipe_bpp = intel_dp_dsc_compute_bpp(intel_dp, dsc_max_bpc); - if (pipe_bpp < DP_DSC_MIN_SUPPORTED_BPC * 3) { + + /* Min Input BPC for ICL+ is 8 */ + if (pipe_bpp < 8 * 3) { DRM_DEBUG_KMS("No DSC support for less than 8bpc\n"); return -EINVAL; }