From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Rather that extracting the current cdclk freuqncy every time someone
wants to know it, cache the current value and use that. VLV/CHV already
stored a cached value there so just expand that to cover all platforms.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.h | 2 +-
drivers/gpu/drm/i915/intel_display.c | 44 ++++++++++++++++++++----------------
2 files changed, 26 insertions(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index c4f2cb6..8b6061d 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1632,7 +1632,7 @@ struct drm_i915_private {
int num_fence_regs; /* 8 on pre-965, 16 otherwise */
unsigned int fsb_freq, mem_freq, is_ddr3;
- unsigned int vlv_cdclk_freq;
+ unsigned int cdclk_freq;
unsigned int hpll_freq;
/**
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index e76dc56..0a6c063 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4745,20 +4745,22 @@ static int valleyview_get_vco(struct drm_i915_private *dev_priv)
return vco_freq[hpll_freq] * 1000;
}
-static void vlv_update_cdclk(struct drm_device *dev)
+static void intel_update_cdclk(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
- dev_priv->vlv_cdclk_freq = dev_priv->display.get_display_clock_speed(dev);
+ dev_priv->cdclk_freq = dev_priv->display.get_display_clock_speed(dev);
DRM_DEBUG_DRIVER("Current CD clock rate: %d kHz\n",
- dev_priv->vlv_cdclk_freq);
+ dev_priv->cdclk_freq);
- /*
- * Program the gmbus_freq based on the cdclk frequency.
- * BSpec erroneously claims we should aim for 4MHz, but
- * in fact 1MHz is the correct frequency.
- */
- I915_WRITE(GMBUSFREQ_VLV, DIV_ROUND_UP(dev_priv->vlv_cdclk_freq, 1000));
+ if (IS_VALLEYVIEW(dev)) {
+ /*
+ * Program the gmbus_freq based on the cdclk frequency.
+ * BSpec erroneously claims we should aim for 4MHz, but
+ * in fact 1MHz is the correct frequency.
+ */
+ I915_WRITE(GMBUSFREQ_VLV, DIV_ROUND_UP(dev_priv->cdclk_freq, 1000));
+ }
}
/* Adjust CDclk dividers to allow high res or save power if possible */
@@ -4767,7 +4769,7 @@ static void valleyview_set_cdclk(struct drm_device *dev, int cdclk)
struct drm_i915_private *dev_priv = dev->dev_private;
u32 val, cmd;
- WARN_ON(dev_priv->display.get_display_clock_speed(dev) != dev_priv->vlv_cdclk_freq);
+ WARN_ON(dev_priv->display.get_display_clock_speed(dev) != dev_priv->cdclk_freq);
if (cdclk >= 320000) /* jump to highest voltage for 400MHz too */
cmd = 2;
@@ -4823,7 +4825,7 @@ static void valleyview_set_cdclk(struct drm_device *dev, int cdclk)
vlv_bunit_write(dev_priv, BUNIT_REG_BISOC, val);
mutex_unlock(&dev_priv->dpio_lock);
- vlv_update_cdclk(dev);
+ intel_update_cdclk(dev);
}
static void cherryview_set_cdclk(struct drm_device *dev, int cdclk)
@@ -4831,7 +4833,7 @@ static void cherryview_set_cdclk(struct drm_device *dev, int cdclk)
struct drm_i915_private *dev_priv = dev->dev_private;
u32 val, cmd;
- WARN_ON(dev_priv->display.get_display_clock_speed(dev) != dev_priv->vlv_cdclk_freq);
+ WARN_ON(dev_priv->display.get_display_clock_speed(dev) != dev_priv->cdclk_freq);
switch (cdclk) {
case 400000:
@@ -4864,7 +4866,7 @@ static void cherryview_set_cdclk(struct drm_device *dev, int cdclk)
}
mutex_unlock(&dev_priv->rps.hw_lock);
- vlv_update_cdclk(dev);
+ intel_update_cdclk(dev);
}
static int valleyview_calc_cdclk(struct drm_i915_private *dev_priv,
@@ -4922,8 +4924,7 @@ static void valleyview_modeset_global_pipes(struct drm_device *dev,
struct intel_crtc *intel_crtc;
int max_pixclk = intel_mode_max_pixclk(dev_priv);
- if (valleyview_calc_cdclk(dev_priv, max_pixclk) ==
- dev_priv->vlv_cdclk_freq)
+ if (valleyview_calc_cdclk(dev_priv, max_pixclk) == dev_priv->cdclk_freq)
return;
/* disable/enable all currently active pipes while we change cdclk */
@@ -4938,7 +4939,7 @@ static void valleyview_modeset_global_resources(struct drm_device *dev)
int max_pixclk = intel_mode_max_pixclk(dev_priv);
int req_cdclk = valleyview_calc_cdclk(dev_priv, max_pixclk);
- if (req_cdclk != dev_priv->vlv_cdclk_freq) {
+ if (req_cdclk != dev_priv->cdclk_freq) {
if (IS_CHERRYVIEW(dev))
cherryview_set_cdclk(dev, req_cdclk);
else
@@ -8151,6 +8152,8 @@ static void hsw_disable_lcpll(struct drm_i915_private *dev_priv,
I915_WRITE(LCPLL_CTL, val);
POSTING_READ(LCPLL_CTL);
}
+
+ intel_update_cdclk(dev_priv->dev);
}
/*
@@ -8217,6 +8220,8 @@ static void hsw_restore_lcpll(struct drm_i915_private *dev_priv)
if (--dev_priv->uncore.forcewake_count == 0)
dev_priv->uncore.funcs.force_wake_put(dev_priv, FORCEWAKE_ALL);
spin_unlock_irq(&dev_priv->uncore.lock);
+
+ intel_update_cdclk(dev_priv->dev);
}
/*
@@ -11931,6 +11936,8 @@ static void intel_shared_dpll_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
+ intel_update_cdclk(dev);
+
if (HAS_DDI(dev))
intel_ddi_pll_init(dev);
else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
@@ -13270,10 +13277,9 @@ static void i915_disable_vga(struct drm_device *dev)
void intel_modeset_init_hw(struct drm_device *dev)
{
- intel_prepare_ddi(dev);
+ intel_update_cdclk(dev);
- if (IS_VALLEYVIEW(dev))
- vlv_update_cdclk(dev);
+ intel_prepare_ddi(dev);
intel_init_clock_gating(dev);
--
2.0.4
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