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author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2015-08-17 18:46:20 +0300 |
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committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2015-11-10 22:30:42 +0200 |
commit | e404ba8d06ff2a1bdb916a9e5d2c09cacd7e5ca3 (patch) | |
tree | ae345ebb5a738840c977316412dc07d16af0b0e7 /drivers/gpu/drm/i915/intel_ddi.c | |
parent | abfce949052f323b6b0531c6cdc7ad0c3d501d94 (diff) | |
download | op-kernel-dev-e404ba8d06ff2a1bdb916a9e5d2c09cacd7e5ca3.zip op-kernel-dev-e404ba8d06ff2a1bdb916a9e5d2c09cacd7e5ca3.tar.gz |
drm/i915: Setup DDI clk for MST on SKL
Set up the DDI->PLL mapping on SKL also for MST links. Might help make
MST operational on SKL.
v2: Rebased due to KBL
Improve the patch subject, Jesse provided the new one
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1439826380-18403-1-git-send-email-ville.syrjala@linux.intel.com
References: https://bugs.freedesktop.org/show_bug.cgi?id=91791
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ddi.c')
-rw-r--r-- | drivers/gpu/drm/i915/intel_ddi.c | 49 |
1 files changed, 29 insertions, 20 deletions
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index 50cadba..da46edd 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -2259,30 +2259,21 @@ uint32_t ddi_signal_levels(struct intel_dp *intel_dp) return DDI_BUF_TRANS_SELECT(level); } -static void intel_ddi_pre_enable(struct intel_encoder *intel_encoder) +void intel_ddi_clk_select(struct intel_encoder *encoder, + const struct intel_crtc_state *pipe_config) { - struct drm_encoder *encoder = &intel_encoder->base; - 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; - int hdmi_level; - - if (type == INTEL_OUTPUT_EDP) { - struct intel_dp *intel_dp = enc_to_intel_dp(encoder); - intel_edp_panel_on(intel_dp); - } + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); + enum port port = intel_ddi_get_encoder_port(encoder); - if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) { - uint32_t dpll = crtc->config->ddi_pll_sel; + if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) { + uint32_t dpll = pipe_config->ddi_pll_sel; uint32_t val; /* * DPLL0 is used for eDP and is the only "private" DPLL (as * opposed to shared) on SKL */ - if (type == INTEL_OUTPUT_EDP) { + if (encoder->type == INTEL_OUTPUT_EDP) { WARN_ON(dpll != SKL_DPLL0); val = I915_READ(DPLL_CTRL1); @@ -2290,7 +2281,7 @@ static void intel_ddi_pre_enable(struct intel_encoder *intel_encoder) val &= ~(DPLL_CTRL1_HDMI_MODE(dpll) | DPLL_CTRL1_SSC(dpll) | DPLL_CTRL1_LINK_RATE_MASK(dpll)); - val |= crtc->config->dpll_hw_state.ctrl1 << (dpll * 6); + val |= pipe_config->dpll_hw_state.ctrl1 << (dpll * 6); I915_WRITE(DPLL_CTRL1, val); POSTING_READ(DPLL_CTRL1); @@ -2306,11 +2297,29 @@ static void intel_ddi_pre_enable(struct intel_encoder *intel_encoder) I915_WRITE(DPLL_CTRL2, val); - } else if (INTEL_INFO(dev)->gen < 9) { - WARN_ON(crtc->config->ddi_pll_sel == PORT_CLK_SEL_NONE); - I915_WRITE(PORT_CLK_SEL(port), crtc->config->ddi_pll_sel); + } else if (INTEL_INFO(dev_priv)->gen < 9) { + WARN_ON(pipe_config->ddi_pll_sel == PORT_CLK_SEL_NONE); + I915_WRITE(PORT_CLK_SEL(port), pipe_config->ddi_pll_sel); + } +} + +static void intel_ddi_pre_enable(struct intel_encoder *intel_encoder) +{ + struct drm_encoder *encoder = &intel_encoder->base; + 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; + int hdmi_level; + + if (type == INTEL_OUTPUT_EDP) { + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); + intel_edp_panel_on(intel_dp); } + intel_ddi_clk_select(intel_encoder, crtc->config); + if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP) { struct intel_dp *intel_dp = enc_to_intel_dp(encoder); |