drm/i915: Add encoder->post_pll_disable() hooks and move CHV clock buffer disables...

Move the CHV clock buffer disable from chv_disable_pll() to the new
encoder .post_pll_disable() hook. This is more symmetric since the
clock buffer enable happens from the .pre_pll_enable() hook.

We'll have more use for the new hook soon.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Deepak S <deepak.s@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index a64da67..328d1ee 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -1828,17 +1828,6 @@ static void chv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
        val &= ~DPIO_DCLKP_EN;
        vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), val);
 
-       /* disable left/right clock distribution */
-       if (pipe != PIPE_B) {
-               val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0);
-               val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK);
-               vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val);
-       } else {
-               val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1);
-               val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK);
-               vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val);
-       }
-
        mutex_unlock(&dev_priv->sb_lock);
 }
 
@@ -6193,6 +6182,10 @@ static void i9xx_crtc_disable(struct drm_crtc *crtc)
                        i9xx_disable_pll(intel_crtc);
        }
 
+       for_each_encoder_on_crtc(dev, crtc, encoder)
+               if (encoder->post_pll_disable)
+                       encoder->post_pll_disable(encoder);
+
        if (!IS_GEN2(dev))
                intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
 

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index da7d1ae..4e5bd87 100644 (file)
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -2943,6 +2943,28 @@ static void chv_dp_pre_pll_enable(struct intel_encoder *encoder)
        mutex_unlock(&dev_priv->sb_lock);
 }
 
+static void chv_dp_post_pll_disable(struct intel_encoder *encoder)
+{
+       struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+       enum pipe pipe = to_intel_crtc(encoder->base.crtc)->pipe;
+       u32 val;
+
+       mutex_lock(&dev_priv->sb_lock);
+
+       /* disable left/right clock distribution */
+       if (pipe != PIPE_B) {
+               val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0);
+               val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK);
+               vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val);
+       } else {
+               val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1);
+               val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK);
+               vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val);
+       }
+
+       mutex_unlock(&dev_priv->sb_lock);
+}
+
 /*
  * Native read with retry for link status and receiver capability reads for
  * cases where the sink may still be asleep.
@@ -6000,6 +6022,7 @@ intel_dp_init(struct drm_device *dev, int output_reg, enum port port)
                intel_encoder->pre_enable = chv_pre_enable_dp;
                intel_encoder->enable = vlv_enable_dp;
                intel_encoder->post_disable = chv_post_disable_dp;
+               intel_encoder->post_pll_disable = chv_dp_post_pll_disable;
        } else if (IS_VALLEYVIEW(dev)) {
                intel_encoder->pre_pll_enable = vlv_dp_pre_pll_enable;
                intel_encoder->pre_enable = vlv_pre_enable_dp;

diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 8383442..525e457 100644 (file)
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -142,6 +142,7 @@ struct intel_encoder {
        void (*mode_set)(struct intel_encoder *intel_encoder);
        void (*disable)(struct intel_encoder *);
        void (*post_disable)(struct intel_encoder *);
+       void (*post_pll_disable)(struct intel_encoder *);
        /* Read out the current hw state of this connector, returning true if
         * the encoder is active. If the encoder is enabled it also set the pipe
         * it is connected to in the pipe parameter. */

diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index c25835f..269937a 100644 (file)
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -1681,6 +1681,28 @@ static void chv_hdmi_pre_pll_enable(struct intel_encoder *encoder)
        mutex_unlock(&dev_priv->sb_lock);
 }
 
+static void chv_hdmi_post_pll_disable(struct intel_encoder *encoder)
+{
+       struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+       enum pipe pipe = to_intel_crtc(encoder->base.crtc)->pipe;
+       u32 val;
+
+       mutex_lock(&dev_priv->sb_lock);
+
+       /* disable left/right clock distribution */
+       if (pipe != PIPE_B) {
+               val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0);
+               val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK);
+               vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val);
+       } else {
+               val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1);
+               val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK);
+               vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val);
+       }
+
+       mutex_unlock(&dev_priv->sb_lock);
+}
+
 static void vlv_hdmi_post_disable(struct intel_encoder *encoder)
 {
        struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
@@ -2083,6 +2105,7 @@ void intel_hdmi_init(struct drm_device *dev, int hdmi_reg, enum port port)
                intel_encoder->pre_enable = chv_hdmi_pre_enable;
                intel_encoder->enable = vlv_enable_hdmi;
                intel_encoder->post_disable = chv_hdmi_post_disable;
+               intel_encoder->post_pll_disable = chv_hdmi_post_pll_disable;
        } else if (IS_VALLEYVIEW(dev)) {
                intel_encoder->pre_pll_enable = vlv_hdmi_pre_pll_enable;
                intel_encoder->pre_enable = vlv_hdmi_pre_enable;