From 90d268741f74f7852ebc295c96212c6e992b2078 Mon Sep 17 00:00:00 2001 From: Robin Singh Date: Thu, 22 Aug 2019 14:42:49 -0400 Subject: drm/amd/display: Added pixel dynamic expansion control. [Why] To compare the crc of the framebuffer data at input of display pipeline with the crc of the otg, we need to disable pixel formatter's dynamic expansion feature during crc capture and keep it enable in the normal operation. [HOW] Expose a new interface in DM and dc for pixel formatter (fmt dynamic bitdepth expansion control). Interface control the FMT_DYNAMIC_EXP_EN bit, during crc capture keep it disabled. Signed-off-by: Robin Singh Reviewed-by: Harry Wentland Acked-by: Bhawanpreet Lakha Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm') diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c index a549c7c717dd..eaad9099bc0b 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c @@ -122,11 +122,16 @@ int amdgpu_dm_crtc_configure_crc_source(struct drm_crtc *crtc, } /* Configure dithering */ - if (!dm_need_crc_dither(source)) + if (!dm_need_crc_dither(source)) { dc_stream_set_dither_option(stream_state, DITHER_OPTION_TRUN8); - else + dc_stream_set_dyn_expansion(stream_state->ctx->dc, stream_state, + DYN_EXPANSION_DISABLE); + } else { dc_stream_set_dither_option(stream_state, DITHER_OPTION_DEFAULT); + dc_stream_set_dyn_expansion(stream_state->ctx->dc, stream_state, + DYN_EXPANSION_AUTO); + } unlock: mutex_unlock(&adev->dm.dc_lock); -- cgit v1.2.3