From: Rodrigo Vivi Date: Thu, 12 Jun 2014 17:16:42 +0000 (-0700) Subject: drm/i915: BDW PSR: Add single frame update support. X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=82c562549b4c86274c564d3b3498020559683dcd;p=linux-beck.git drm/i915: BDW PSR: Add single frame update support. When link is in stand by and PSR exit is triggered by a primary or sprite plane flip this mode allows only one single updated frame to be send to display than get back to PSR immediately. Reviewed-by: Vijay Purushothaman Signed-off-by: Rodrigo Vivi Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 05e2541077ea..9ce017b85320 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -2409,6 +2409,7 @@ enum punit_power_well { #define EDP_PSR_BASE(dev) (IS_HASWELL(dev) ? 0x64800 : 0x6f800) #define EDP_PSR_CTL(dev) (EDP_PSR_BASE(dev) + 0) #define EDP_PSR_ENABLE (1<<31) +#define BDW_PSR_SINGLE_FRAME (1<<30) #define EDP_PSR_LINK_DISABLE (0<<27) #define EDP_PSR_LINK_STANDBY (1<<27) #define EDP_PSR_MIN_LINK_ENTRY_TIME_MASK (3<<25) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 68289ceaf2f2..73e4a5cb7195 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1723,6 +1723,7 @@ static void intel_edp_psr_enable_source(struct intel_dp *intel_dp) val |= EDP_PSR_TP2_TP3_TIME_0us; val |= EDP_PSR_TP1_TIME_0us; val |= EDP_PSR_SKIP_AUX_EXIT; + val |= IS_BROADWELL(dev) ? BDW_PSR_SINGLE_FRAME : 0; } else val |= EDP_PSR_LINK_DISABLE;