Message ID | 1443126560-26006-4-git-send-email-ville.syrjala@linux.intel.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
On Thu, 2015-09-24 at 23:29 +0300, ville.syrjala@linux.intel.com wrote: > From: Ville Syrjälä <ville.syrjala@linux.intel.com> > > We have the czclk freqeuency in dev_priv now, so let's just use it ^frequency > when converting the rc6 counters to milliseconds. This elimiantes ^eliminates > a bunch of hairy code that essentially tries to extract the czclk > frequency using yet another method. > > Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Imre Deak <imre.deak@intel.com> > --- > drivers/gpu/drm/i915/i915_sysfs.c | 31 +++---------------------------- > 1 file changed, 3 insertions(+), 28 deletions(-) > > diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c > index 55bd04c..74086eb 100644 > --- a/drivers/gpu/drm/i915/i915_sysfs.c > +++ b/drivers/gpu/drm/i915/i915_sysfs.c > @@ -39,7 +39,7 @@ static u32 calc_residency(struct drm_device *dev, const u32 reg) > { > struct drm_i915_private *dev_priv = dev->dev_private; > u64 raw_time; /* 32b value may overflow during fixed point math */ > - u64 units = 128ULL, div = 100000ULL, bias = 100ULL; > + u64 units = 128ULL, div = 100000ULL; > u32 ret; > > if (!intel_enable_rc6(dev)) > @@ -49,41 +49,16 @@ static u32 calc_residency(struct drm_device *dev, const u32 reg) > > /* On VLV and CHV, residency time is in CZ units rather than 1.28us */ > if (IS_VALLEYVIEW(dev)) { > - u32 clk_reg, czcount_30ns; > - > - if (IS_CHERRYVIEW(dev)) > - clk_reg = CHV_CLK_CTL1; > - else > - clk_reg = VLV_CLK_CTL2; > - > - czcount_30ns = I915_READ(clk_reg) >> CLK_CTL2_CZCOUNT_30NS_SHIFT; > - > - if (!czcount_30ns) { > - WARN(!czcount_30ns, "bogus CZ count value"); > - ret = 0; > - goto out; > - } > - > - if (IS_CHERRYVIEW(dev) && czcount_30ns == 1) { > - /* Special case for 320Mhz */ > - div = 10000000ULL; > - units = 3125ULL; > - } else { > - czcount_30ns += 1; > - div = 1000000ULL; > - units = DIV_ROUND_UP_ULL(30ULL * bias, czcount_30ns); > - } > + units = 1; > + div = dev_priv->czclk_freq; > > if (I915_READ(VLV_COUNTER_CONTROL) & VLV_COUNT_RANGE_HIGH) > units <<= 8; > - > - div = div * bias; > } > > raw_time = I915_READ(reg) * units; > ret = DIV_ROUND_UP_ULL(raw_time, div); > > -out: > intel_runtime_pm_put(dev_priv); > return ret; > }
On Mon, Sep 28, 2015 at 10:37:52PM +0300, Imre Deak wrote: > On Thu, 2015-09-24 at 23:29 +0300, ville.syrjala@linux.intel.com wrote: > > From: Ville Syrjälä <ville.syrjala@linux.intel.com> > > > > We have the czclk freqeuency in dev_priv now, so let's just use it > ^frequency > > when converting the rc6 counters to milliseconds. This elimiantes > ^eliminates Someone needs to integrate a proper spell checker into checkpatch :) > > a bunch of hairy code that essentially tries to extract the czclk > > frequency using yet another method. > > > > Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> > > Reviewed-by: Imre Deak <imre.deak@intel.com> > > > --- > > drivers/gpu/drm/i915/i915_sysfs.c | 31 +++---------------------------- > > 1 file changed, 3 insertions(+), 28 deletions(-) > > > > diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c > > index 55bd04c..74086eb 100644 > > --- a/drivers/gpu/drm/i915/i915_sysfs.c > > +++ b/drivers/gpu/drm/i915/i915_sysfs.c > > @@ -39,7 +39,7 @@ static u32 calc_residency(struct drm_device *dev, const u32 reg) > > { > > struct drm_i915_private *dev_priv = dev->dev_private; > > u64 raw_time; /* 32b value may overflow during fixed point math */ > > - u64 units = 128ULL, div = 100000ULL, bias = 100ULL; > > + u64 units = 128ULL, div = 100000ULL; > > u32 ret; > > > > if (!intel_enable_rc6(dev)) > > @@ -49,41 +49,16 @@ static u32 calc_residency(struct drm_device *dev, const u32 reg) > > > > /* On VLV and CHV, residency time is in CZ units rather than 1.28us */ > > if (IS_VALLEYVIEW(dev)) { > > - u32 clk_reg, czcount_30ns; > > - > > - if (IS_CHERRYVIEW(dev)) > > - clk_reg = CHV_CLK_CTL1; > > - else > > - clk_reg = VLV_CLK_CTL2; > > - > > - czcount_30ns = I915_READ(clk_reg) >> CLK_CTL2_CZCOUNT_30NS_SHIFT; > > - > > - if (!czcount_30ns) { > > - WARN(!czcount_30ns, "bogus CZ count value"); > > - ret = 0; > > - goto out; > > - } > > - > > - if (IS_CHERRYVIEW(dev) && czcount_30ns == 1) { > > - /* Special case for 320Mhz */ > > - div = 10000000ULL; > > - units = 3125ULL; > > - } else { > > - czcount_30ns += 1; > > - div = 1000000ULL; > > - units = DIV_ROUND_UP_ULL(30ULL * bias, czcount_30ns); > > - } > > + units = 1; > > + div = dev_priv->czclk_freq; > > > > if (I915_READ(VLV_COUNTER_CONTROL) & VLV_COUNT_RANGE_HIGH) > > units <<= 8; > > - > > - div = div * bias; > > } > > > > raw_time = I915_READ(reg) * units; > > ret = DIV_ROUND_UP_ULL(raw_time, div); > > > > -out: > > intel_runtime_pm_put(dev_priv); > > return ret; > > } >
diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c index 55bd04c..74086eb 100644 --- a/drivers/gpu/drm/i915/i915_sysfs.c +++ b/drivers/gpu/drm/i915/i915_sysfs.c @@ -39,7 +39,7 @@ static u32 calc_residency(struct drm_device *dev, const u32 reg) { struct drm_i915_private *dev_priv = dev->dev_private; u64 raw_time; /* 32b value may overflow during fixed point math */ - u64 units = 128ULL, div = 100000ULL, bias = 100ULL; + u64 units = 128ULL, div = 100000ULL; u32 ret; if (!intel_enable_rc6(dev)) @@ -49,41 +49,16 @@ static u32 calc_residency(struct drm_device *dev, const u32 reg) /* On VLV and CHV, residency time is in CZ units rather than 1.28us */ if (IS_VALLEYVIEW(dev)) { - u32 clk_reg, czcount_30ns; - - if (IS_CHERRYVIEW(dev)) - clk_reg = CHV_CLK_CTL1; - else - clk_reg = VLV_CLK_CTL2; - - czcount_30ns = I915_READ(clk_reg) >> CLK_CTL2_CZCOUNT_30NS_SHIFT; - - if (!czcount_30ns) { - WARN(!czcount_30ns, "bogus CZ count value"); - ret = 0; - goto out; - } - - if (IS_CHERRYVIEW(dev) && czcount_30ns == 1) { - /* Special case for 320Mhz */ - div = 10000000ULL; - units = 3125ULL; - } else { - czcount_30ns += 1; - div = 1000000ULL; - units = DIV_ROUND_UP_ULL(30ULL * bias, czcount_30ns); - } + units = 1; + div = dev_priv->czclk_freq; if (I915_READ(VLV_COUNTER_CONTROL) & VLV_COUNT_RANGE_HIGH) units <<= 8; - - div = div * bias; } raw_time = I915_READ(reg) * units; ret = DIV_ROUND_UP_ULL(raw_time, div); -out: intel_runtime_pm_put(dev_priv); return ret; }