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drm/i915: Macros to convert PM time interval values to microseconds

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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@chris-wilson.co.uk>
Signed-off-by: Akash Goel <akash.goel@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1461350146-23454-1-git-send-email-akash.goel@intel.com
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Akash Goel 2016-04-23 00:05:44 +05:30 committed by Chris Wilson
parent 8a292d016d
commit 52530cbadc
1 changed files with 9 additions and 0 deletions
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9
drivers/gpu/drm/i915/i915_reg.h
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@ -2964,6 +2964,15 @@ 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))
/*
* Logical Context regs
*/