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| author | Ashutosh Dixit <ashutosh.dixit@intel.com> | 2023-04-20 18:40:39 +0200 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2023-04-27 00:02:33 +0200 |
| commit | d81268ee1c1073471cf0e8adb0fc9d026b602c3b (patch) | |
| tree | 5068fd59c541c1348cf40e8a636e0204b4075623 /drivers/gpu/drm/i915/i915_hwmon.c | |
| parent | drm/i915/guc: Actually return an error if GuC version range check fails (diff) | |
| download | linux-d81268ee1c1073471cf0e8adb0fc9d026b602c3b.tar.xz linux-d81268ee1c1073471cf0e8adb0fc9d026b602c3b.zip | |
drm/i915/hwmon: Get mutex and rpm ref just once in hwm_power_max_write
In preparation for follow-on patches, refactor hwm_power_max_write to take
hwmon_lock and runtime pm wakeref at start of the function and release them
at the end, therefore acquiring these just once each.
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@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/20230420164041.1428455-2-ashutosh.dixit@intel.com
Diffstat (limited to '')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_hwmon.c | 28 |
1 files changed, 15 insertions, 13 deletions
diff --git a/drivers/gpu/drm/i915/i915_hwmon.c b/drivers/gpu/drm/i915/i915_hwmon.c index 8e7dccc8d3a0..7f44e809ca15 100644 --- a/drivers/gpu/drm/i915/i915_hwmon.c +++ b/drivers/gpu/drm/i915/i915_hwmon.c @@ -396,31 +396,33 @@ hwm_power_max_write(struct hwm_drvdata *ddat, long val) { struct i915_hwmon *hwmon = ddat->hwmon; intel_wakeref_t wakeref; + int ret = 0; u32 nval; + mutex_lock(&hwmon->hwmon_lock); + wakeref = intel_runtime_pm_get(ddat->uncore->rpm); + /* Disable PL1 limit and verify, because the limit cannot be disabled on all platforms */ if (val == PL1_DISABLE) { - mutex_lock(&hwmon->hwmon_lock); - with_intel_runtime_pm(ddat->uncore->rpm, wakeref) { - intel_uncore_rmw(ddat->uncore, hwmon->rg.pkg_rapl_limit, - PKG_PWR_LIM_1_EN, 0); - nval = intel_uncore_read(ddat->uncore, hwmon->rg.pkg_rapl_limit); - } - mutex_unlock(&hwmon->hwmon_lock); + intel_uncore_rmw(ddat->uncore, hwmon->rg.pkg_rapl_limit, + PKG_PWR_LIM_1_EN, 0); + nval = intel_uncore_read(ddat->uncore, hwmon->rg.pkg_rapl_limit); if (nval & PKG_PWR_LIM_1_EN) - return -ENODEV; - return 0; + ret = -ENODEV; + goto exit; } /* Computation in 64-bits to avoid overflow. Round to nearest. */ nval = DIV_ROUND_CLOSEST_ULL((u64)val << hwmon->scl_shift_power, SF_POWER); nval = PKG_PWR_LIM_1_EN | REG_FIELD_PREP(PKG_PWR_LIM_1, nval); - hwm_locked_with_pm_intel_uncore_rmw(ddat, hwmon->rg.pkg_rapl_limit, - PKG_PWR_LIM_1_EN | PKG_PWR_LIM_1, - nval); - return 0; + intel_uncore_rmw(ddat->uncore, hwmon->rg.pkg_rapl_limit, + PKG_PWR_LIM_1_EN | PKG_PWR_LIM_1, nval); +exit: + intel_runtime_pm_put(ddat->uncore->rpm, wakeref); + mutex_unlock(&hwmon->hwmon_lock); + return ret; } static int |