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drm/i915: Add RP1 render P state thresholds in CHV 

This is useful for userspace utilities to verify and micromanaging
the increase/decrease frequncy.

v2: Use vlv_gpu_freq to get freq (Deepak)

Signed-off-by: Deepak S <deepak.s@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Deepak S 2014-07-12 18:46:14 +05:30 committed by Daniel Vetter
parent 3497a5620c
commit 7707df4ad6
1 changed files with 15 additions and 0 deletions
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15
drivers/gpu/drm/i915/intel_pm.c
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@ -3803,6 +3803,16 @@ static int cherryview_rps_rpe_freq(struct drm_i915_private *dev_priv)
return rpe;
}
static int cherryview_rps_guar_freq(struct drm_i915_private *dev_priv)
{
u32 val, rp1;
val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS);
rp1 = (val >> PUNIT_GPU_STATUS_MAX_FREQ_SHIFT) & PUNIT_GPU_STATUS_MAX_FREQ_MASK;
return rp1;
}
static int cherryview_rps_min_freq(struct drm_i915_private *dev_priv)
{
u32 val, rpn;
@ -4004,6 +4014,11 @@ static void cherryview_init_gt_powersave(struct drm_device *dev)
vlv_gpu_freq(dev_priv, dev_priv->rps.efficient_freq),
dev_priv->rps.efficient_freq);
dev_priv->rps.rp1_freq = cherryview_rps_guar_freq(dev_priv);
DRM_DEBUG_DRIVER("RP1(Guar) GPU freq: %d MHz (%u)\n",
vlv_gpu_freq(dev_priv, dev_priv->rps.rp1_freq),
dev_priv->rps.rp1_freq);
dev_priv->rps.min_freq = cherryview_rps_min_freq(dev_priv);
DRM_DEBUG_DRIVER("min GPU freq: %d MHz (%u)\n",
vlv_gpu_freq(dev_priv, dev_priv->rps.min_freq),