From 8d371db4b0a7aa919df9be2be430187fe3e70399 Mon Sep 17 00:00:00 2001 From: Ander Conselvan de Oliveira Date: Fri, 17 Feb 2017 14:06:28 +0200 Subject: [PATCH] drm/i915/glk: Load the degamma LUT even in legacy gamma mode MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit In Geminilake, the degamma table is enabled or disabled by the pipe CSC enable bit, so its active even when running in the legacy gamma mode. So always set sane values for that table, since the default value is all zeroes. This fixes blank screens after a suspend/resume cycle while legacy gamma is in use. Signed-off-by: Ander Conselvan de Oliveira Reviewed-by: Ville Syrjälä Link: http://patchwork.freedesktop.org/patch/msgid/20170217120630.6143-2-ander.conselvan.de.oliveira@intel.com --- drivers/gpu/drm/i915/intel_color.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_color.c b/drivers/gpu/drm/i915/intel_color.c index 0627eee..b9e5266d 100644 --- a/drivers/gpu/drm/i915/intel_color.c +++ b/drivers/gpu/drm/i915/intel_color.c @@ -483,12 +483,13 @@ static void glk_load_luts(struct drm_crtc_state *state) struct intel_crtc_state *intel_state = to_intel_crtc_state(state); enum pipe pipe = to_intel_crtc(crtc)->pipe; + glk_load_degamma_lut(state); + if (crtc_state_is_legacy(state)) { haswell_load_luts(state); return; } - glk_load_degamma_lut(state); bdw_load_gamma_lut(state, 0); intel_state->gamma_mode = GAMMA_MODE_MODE_10BIT; -- 2.7.4