From 8228c42fc0ee54dd2c798035baa35739e54bfe91 Mon Sep 17 00:00:00 2001 From: Manasi Navare Date: Wed, 28 Nov 2018 12:26:14 -0800 Subject: [PATCH] drm/i915/dp: Do not enable PSR2 if DSC is enabled MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit If a eDP panel supports both PSR2 and VDSC, our HW cannot support both at a time. Give priority to PSR2 if a requested resolution can be supported without compression else enable VDSC and keep PSR2 disabled. v4: Fix the unrealted stuff removed during rebase (Ville) v3: * Rebase v2: * Add warning for DSC and PSR2 enabled together (DK) Cc: Rodrigo Vivi Cc: Jani Nikula Cc: Ville Syrjälä Signed-off-by: Manasi Navare Reviewed-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/20181128202628.20238-3-manasi.d.navare@intel.com --- drivers/gpu/drm/i915/intel_psr.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c index 572e626eadff..2084784f320d 100644 --- a/drivers/gpu/drm/i915/intel_psr.c +++ b/drivers/gpu/drm/i915/intel_psr.c @@ -75,6 +75,10 @@ static bool intel_psr2_enabled(struct drm_i915_private *dev_priv, if (i915_modparams.enable_psr == -1) return false; + /* Cannot enable DSC and PSR2 simultaneously */ + WARN_ON(crtc_state->dsc_params.compression_enable && + crtc_state->has_psr2); + switch (dev_priv->psr.debug & I915_PSR_DEBUG_MODE_MASK) { case I915_PSR_DEBUG_FORCE_PSR1: return false; @@ -502,6 +506,16 @@ static bool intel_psr2_config_valid(struct intel_dp *intel_dp, if (!dev_priv->psr.sink_psr2_support) return false; + /* + * DSC and PSR2 cannot be enabled simultaneously. If a requested + * resolution requires DSC to be enabled, priority is given to DSC + * over PSR2. + */ + if (crtc_state->dsc_params.compression_enable) { + DRM_DEBUG_KMS("PSR2 cannot be enabled since DSC is enabled\n"); + return false; + } + if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv)) { psr_max_h = 4096; psr_max_v = 2304; -- 2.25.1