Re: [PATCH 1/3] drm/i915: Track the enabled PM interrupts in dev_priv.

["S, Deepak" <deepak.s@intel.com>]

On 3/13/2014 11:46 PM, Ville Syrjälä wrote:
> On Thu, Mar 13, 2014 at 09:30:16PM +0530, deepak.s@linux.intel.com wrote:
>> From: Deepak S <deepak.s@intel.com>
>>
>> When we use different rps events for different platform or due to wa, we
>> mgiht end up doing (vs) everywahere. Insted of this, Let's use a variable
>> in dev_priv to track the enabled PM interrupts
>>
>> Signed-off-by: Deepak S <deepak.s@linux.intel.com>
>> ---
>>   drivers/gpu/drm/i915/i915_drv.h |  1 +
>>   drivers/gpu/drm/i915/i915_irq.c | 14 +++++++-------
>>   drivers/gpu/drm/i915/intel_pm.c | 14 +++++++++-----
>>   3 files changed, 17 insertions(+), 12 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
>> index 70fbe90..d522313 100644
> <snip>
>> @@ -3311,6 +3311,8 @@ static void gen8_enable_rps(struct drm_device *dev)
>>   		   GEN6_RP_UP_BUSY_AVG |
>>   		   GEN6_RP_DOWN_IDLE_AVG);
>>
>> +	dev_priv->pm_rps_events = GEN6_PM_RPS_EVENTS;
>> +
>>   	/* 6: Ring frequency + overclocking (our driver does this later */
>>
>>   	gen6_set_rps(dev, (I915_READ(GEN6_GT_PERF_STATUS) & 0xff00) >> 8);
>> @@ -3430,6 +3432,7 @@ static void gen6_enable_rps(struct drm_device *dev)
>>   	dev_priv->rps.power = HIGH_POWER; /* force a reset */
>>   	gen6_set_rps(dev_priv->dev, dev_priv->rps.min_delay);
>>
>> +	dev_priv->pm_rps_events = GEN6_PM_RPS_EVENTS;
>>   	gen6_enable_rps_interrupts(dev);
>>
>>   	rc6vids = 0;
>> @@ -3688,6 +3691,7 @@ static void valleyview_enable_rps(struct drm_device *dev)
>>   	dev_priv->rps.rp_up_masked = false;
>>   	dev_priv->rps.rp_down_masked = false;
>>
>> +	dev_priv->pm_rps_events = GEN6_PM_RPS_EVENTS;
>>   	gen6_enable_rps_interrupts(dev);
>>
>>   	gen6_gt_force_wake_put(dev_priv, FORCEWAKE_ALL);
>
> I think we need to initialize pm_rps_events somewhere earlier since we
> depend on it already in irq postinstall. Othwewise the patch looks
> good.
Adding it in functions "intel_uncore_early_sanitize" or "pm_init" as 
this gets executed before irq_install in driver_load?