From: Deepak S <deepak.s@xxxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_pm.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 3fb65e9..225b6cb 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -3809,6 +3809,16 @@ static int cherryview_rps_rpe_freq(struct drm_i915_private *dev_priv)
return rpe;
}
+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;
+}
+
int cherryview_rps_min_freq(struct drm_i915_private *dev_priv)
{
u32 val, rpn;
@@ -4010,6 +4020,11 @@ 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),
--
1.9.1
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