trace_intel_gpu_freq_change(intel_gpu_freq(dev_priv, val));
}
-/* vlv_set_rps_idle: Set the frequency to Rpn if Gfx clocks are down
+/* vlv_set_rps_idle: Set the frequency to idle, if Gfx clocks are down
*
* * If Gfx is Idle, then
- * 1. Mask Turbo interrupts
- * 2. Bring up Gfx clock
- * 3. Change the freq to Rpn and wait till P-Unit updates freq
- * 4. Clear the Force GFX CLK ON bit so that Gfx can down
- * 5. Unmask Turbo interrupts
+ * 1. Forcewake Media well.
+ * 2. Request idle freq.
+ * 3. Release Forcewake of Media well.
*/
static void vlv_set_rps_idle(struct drm_i915_private *dev_priv)
{
struct drm_device *dev = dev_priv->dev;
u32 val = dev_priv->rps.idle_freq;
- /* CHV and latest VLV don't need to force the gfx clock */
- if (IS_CHERRYVIEW(dev) || dev->pdev->revision >= 0xd) {
+ /* CHV don't need to force the gfx clock */
+ if (IS_CHERRYVIEW(dev)) {
valleyview_set_rps(dev_priv->dev, val);
return;
}
- /*
- * When we are idle. Drop to min voltage state.
- */
-
if (dev_priv->rps.cur_freq <= val)
return;
- /* Mask turbo interrupt so that they will not come in between */
- I915_WRITE(GEN6_PMINTRMSK,
- gen6_sanitize_rps_pm_mask(dev_priv, ~0));
-
- vlv_force_gfx_clock(dev_priv, true);
-
- dev_priv->rps.cur_freq = val;
-
- vlv_punit_write(dev_priv, PUNIT_REG_GPU_FREQ_REQ, val);
-
- if (wait_for(((vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS))
- & GENFREQSTATUS) == 0, 100))
- DRM_ERROR("timed out waiting for Punit\n");
-
- gen6_set_rps_thresholds(dev_priv, val);
- vlv_force_gfx_clock(dev_priv, false);
-
- I915_WRITE(GEN6_PMINTRMSK, gen6_rps_pm_mask(dev_priv, val));
+ /* Wake up the media well, as that takes a lot less
+ * power than the Render well. */
+ intel_uncore_forcewake_get(dev_priv, FORCEWAKE_MEDIA);
+ valleyview_set_rps(dev_priv->dev, val);
+ intel_uncore_forcewake_put(dev_priv, FORCEWAKE_MEDIA);
}
void gen6_rps_busy(struct drm_i915_private *dev_priv)