From: Satheeshakrishna M Date: Thu, 13 Nov 2014 14:55:19 +0000 (+0000) Subject: drm/i915/skl: Adjust the port PLL selection code X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=efa80add54d12bdeba996220463b6ee4ff6b81ae;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git drm/i915/skl: Adjust the port PLL selection code Skylake deprecates the usage of PORT_CLK_SEL and we are advised to use the new DPLL_CRTL2 for the DDI->PLL mapping. v2: Modified as per review comments Reviewed-by: Paulo Zanoni Signed-off-by: Satheeshakrishna M Signed-off-by: Damien Lespiau Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index 5391c1e19ec7..5f786b476a39 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -1243,7 +1243,8 @@ void intel_ddi_disable_pipe_clock(struct intel_crtc *intel_crtc) static void intel_ddi_pre_enable(struct intel_encoder *intel_encoder) { struct drm_encoder *encoder = &intel_encoder->base; - struct drm_i915_private *dev_priv = encoder->dev->dev_private; + struct drm_device *dev = encoder->dev; + struct drm_i915_private *dev_priv = dev->dev_private; struct intel_crtc *crtc = to_intel_crtc(encoder->crtc); enum port port = intel_ddi_get_encoder_port(intel_encoder); int type = intel_encoder->type; @@ -1253,8 +1254,22 @@ static void intel_ddi_pre_enable(struct intel_encoder *intel_encoder) intel_edp_panel_on(intel_dp); } - WARN_ON(crtc->config.ddi_pll_sel == PORT_CLK_SEL_NONE); - I915_WRITE(PORT_CLK_SEL(port), crtc->config.ddi_pll_sel); + if (IS_SKYLAKE(dev)) { + uint32_t dpll = crtc->config.ddi_pll_sel; + uint32_t val; + + val = I915_READ(DPLL_CTRL2); + + val &= ~(DPLL_CTRL2_DDI_CLK_OFF(port) | + DPLL_CTRL2_DDI_CLK_SEL_MASK(port)); + val |= (DPLL_CTRL2_DDI_CLK_SEL(dpll, port) | + DPLL_CTRL2_DDI_SEL_OVERRIDE(port)); + + I915_WRITE(DPLL_CTRL2, val); + } else { + WARN_ON(crtc->config.ddi_pll_sel == PORT_CLK_SEL_NONE); + I915_WRITE(PORT_CLK_SEL(port), crtc->config.ddi_pll_sel); + } if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP) { struct intel_dp *intel_dp = enc_to_intel_dp(encoder); @@ -1278,7 +1293,8 @@ static void intel_ddi_pre_enable(struct intel_encoder *intel_encoder) static void intel_ddi_post_disable(struct intel_encoder *intel_encoder) { struct drm_encoder *encoder = &intel_encoder->base; - struct drm_i915_private *dev_priv = encoder->dev->dev_private; + struct drm_device *dev = encoder->dev; + struct drm_i915_private *dev_priv = dev->dev_private; enum port port = intel_ddi_get_encoder_port(intel_encoder); int type = intel_encoder->type; uint32_t val; @@ -1306,7 +1322,11 @@ static void intel_ddi_post_disable(struct intel_encoder *intel_encoder) intel_edp_panel_off(intel_dp); } - I915_WRITE(PORT_CLK_SEL(port), PORT_CLK_SEL_NONE); + if (IS_SKYLAKE(dev)) + I915_WRITE(DPLL_CTRL2, (I915_READ(DPLL_CTRL2) | + DPLL_CTRL2_DDI_CLK_OFF(port))); + else + I915_WRITE(PORT_CLK_SEL(port), PORT_CLK_SEL_NONE); } static void intel_enable_ddi(struct intel_encoder *intel_encoder)