[Intel-gfx] [PATCH v2] drm/i915: Removed the read of RP_STATE_CAP from sysfs/debugfs functions

[Chris Wilson]

On Thu, Feb 26, 2015 at 04:09:47PM +0530, akash.goel at intel.com wrote:
> From: Akash Goel <akash.goel at intel.com>
> 
> The frequency values(Rp0, Rp1, Rpn) reported by RP_STATE_CAP register
> are stored, initially by the Driver, inside the dev_priv->rps structure.
> Since these values are expected to remain same throughout, there is no real
> need to read this register, on dynamic basis, from certain debugfs/sysfs
> functions and the values can be instead retrieved from the dev_priv->rps
> structure when needed.
> For the i915_frequency_info debugfs interface, the frequency values from the
> RP_STATE_CAP register only should be used, to indicate the actual Hw state,
> since it is principally used for the debugging purpose.
> 
> v2: Reverted the changes in i915_frequency_info function, to continue report
>     back the frequency values, as per the actual Hw state (Chris)
> 
> Signed-off-by: Akash Goel <akash.goel at intel.com>
Nice improvement,
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre