From d15f9cdd59bab73e7edadee794efdd47bcbc1a7a Mon Sep 17 00:00:00 2001 From: =?utf8?q?Jos=C3=A9=20Roberto=20de=20Souza?= Date: Mon, 3 Dec 2018 16:33:59 -0800 Subject: [PATCH] drm/i915/icl: Do not change reserved registers related to PSR2 MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit For ICL the bit 12 of CHICKEN_TRANS is reserved so we should not touch it and as by default VSC_DATA_SEL_SOFTWARE_CONTROL is already unset in gen10 + GLK we can just drop it and fix for both gens. Cc: Dhinakaran Pandiyan Reviewed-by: Rodrigo Vivi Signed-off-by: José Roberto de Souza Link: https://patchwork.freedesktop.org/patch/msgid/20181204003403.23361-5-jose.souza@intel.com --- drivers/gpu/drm/i915/intel_psr.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c index e463bef3c804..b513a15d60e1 100644 --- a/drivers/gpu/drm/i915/intel_psr.c +++ b/drivers/gpu/drm/i915/intel_psr.c @@ -649,17 +649,14 @@ static void intel_psr_enable_source(struct intel_dp *intel_dp, if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) hsw_psr_setup_aux(intel_dp); - if (dev_priv->psr.psr2_enabled) { + if (dev_priv->psr.psr2_enabled && (IS_GEN9(dev_priv) && + !IS_GEMINILAKE(dev_priv))) { i915_reg_t reg = gen9_chicken_trans_reg(dev_priv, cpu_transcoder); u32 chicken = I915_READ(reg); - if (IS_GEN9(dev_priv) && !IS_GEMINILAKE(dev_priv)) - chicken |= (PSR2_VSC_ENABLE_PROG_HEADER - | PSR2_ADD_VERTICAL_LINE_COUNT); - - else - chicken &= ~VSC_DATA_SEL_SOFTWARE_CONTROL; + chicken |= PSR2_VSC_ENABLE_PROG_HEADER | + PSR2_ADD_VERTICAL_LINE_COUNT; I915_WRITE(reg, chicken); } -- 2.30.2