[PATCH 6/6] drm/i915: GEN6_RP_INTERRUPT_LIMITS doesn't seem to exist on VLV

ville.syrjala
2013-06-25T16:21:33Z

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

I can't find GEN6_RP_INTERRUPT_LIMITS (0xA014) anywhere in VLV docs.
Reading it always returns zero from what I can tell, and eliminating
it doesn't seem to make any difference to the behaviour of the system.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
drivers/gpu/drm/i915/intel_pm.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 8b7475e..96cfb3e 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -3107,7 +3107,8 @@ static void vlv_update_rps_cur_delay(struct drm_i915_private *dev_priv)
void valleyview_set_rps(struct drm_device *dev, u8 val)
{
struct drm_i915_private *dev_priv = dev->dev_private;
- u32 limits = gen6_rps_limits(dev_priv, &val);
+
+ gen6_rps_limits(dev_priv, &val);

WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock));
WARN_ON(val > dev_priv->rps.max_delay);
@@ -3126,11 +3127,6 @@ void valleyview_set_rps(struct drm_device *dev, u8 val)

vlv_punit_write(dev_priv, PUNIT_REG_GPU_FREQ_REQ, val);

- /* Make sure we continue to get interrupts
- * until we hit the minimum or maximum frequencies.
- */
- I915_WRITE(GEN6_RP_INTERRUPT_LIMITS, limits);
-
dev_priv->rps.cur_delay = val;

trace_intel_gpu_freq_change(vlv_gpu_freq(dev_priv->mem_freq, val));
--
1.8.1.5