diff options
| author | Don Hiatt <don.hiatt@intel.com> | 2022-11-14 18:03:45 +0530 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2022-11-17 10:46:29 -0500 |
| commit | 01b8c2e60e96ce8a30d23683fba56b478be7287c (patch) | |
| tree | 4efb8fd7e6eaeb33284f0d8aa481136fe5dbc050 /drivers/gpu/drm/i915/i915_pmu.c | |
| parent | 2c0a284c5d70638c8a4eb47323420d114360c6d7 (diff) | |
drm/i915: Use GEN12_RPSTAT register for GT freq
On GEN12+ use GEN12_RPSTAT register to get actual resolved GT
freq. GEN12_RPSTAT does not require a forcewake and will return 0 freq if
GT is in RC6.
v2:
- Fixed review comments(Ashutosh)
- Added function intel_rps_read_rpstat_fw to read RPSTAT without
forcewake, required especially for GEN6_RPSTAT1 (Ashutosh, Tvrtko)
v3:
- Updated commit title and message for more clarity (Ashutosh)
- Replaced intel_rps_read_rpstat with direct read to GEN12_RPSTAT1 in
read_cagf (Ashutosh)
v4: Remove GEN12_CAGF_SHIFT and use REG_FIELD_GET (Rodrigo)
Cc: Don Hiatt <donhiatt@gmail.com>
Cc: Andi Shyti <andi.shyti@intel.com>
Signed-off-by: Don Hiatt <don.hiatt@intel.com>
Signed-off-by: Badal Nilawar <badal.nilawar@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221114123348.3474216-3-badal.nilawar@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_pmu.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_pmu.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/i915_pmu.c b/drivers/gpu/drm/i915/i915_pmu.c index 958b37123bf1..67140a87182f 100644 --- a/drivers/gpu/drm/i915/i915_pmu.c +++ b/drivers/gpu/drm/i915/i915_pmu.c @@ -371,7 +371,6 @@ static void frequency_sample(struct intel_gt *gt, unsigned int period_ns) { struct drm_i915_private *i915 = gt->i915; - struct intel_uncore *uncore = gt->uncore; struct i915_pmu *pmu = &i915->pmu; struct intel_rps *rps = >->rps; @@ -394,7 +393,7 @@ frequency_sample(struct intel_gt *gt, unsigned int period_ns) * case we assume the system is running at the intended * frequency. Fortunately, the read should rarely fail! */ - val = intel_uncore_read_fw(uncore, GEN6_RPSTAT1); + val = intel_rps_read_rpstat_fw(rps); if (val) val = intel_rps_get_cagf(rps, val); else |