On Sat, Apr 23, 2016 at 12:05:44AM +0530, akash.goel@xxxxxxxxx wrote:
> From: Akash Goel <akash.goel@xxxxxxxxx>
>
> Added a new GT_PM_INTERVAL_TO_US macro to perform the platform
> specific conversion of PM time interval values to microseconds unit.
>
> Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> Signed-off-by: Akash Goel <akash.goel@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_reg.h | 9 +++++++++
> 1 file changed, 9 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index 9464ba3..eacd9ae 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -2939,6 +2939,15 @@ enum skl_disp_power_wells {
> INTERVAL_1_33_US(us)) : \
> INTERVAL_1_28_US(us))
>
> +#define INTERVAL_1_28_TO_US(interval) (((interval) << 7) / 100)
> +#define INTERVAL_1_33_TO_US(interval) (((interval) << 2) / 3)
> +#define INTERVAL_0_833_TO_US(interval) (((interval) * 5) / 6)
> +#define GT_PM_INTERVAL_TO_US(dev_priv, interval) (IS_GEN9(dev_priv) ? \
> + (IS_BROXTON(dev_priv) ? \
> + INTERVAL_0_833_TO_US(interval) : \
> + INTERVAL_1_33_TO_US(interval)) : \
> + INTERVAL_1_28_TO_US(interval))
Bikeshed, but I think once we have platform logic in there a real inline
functino starts to look better.
Feel free to ignore since already pushed.
-Daniel
> +
> /*
> * Logical Context regs
> */
> --
> 1.9.2
>
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--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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