diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_hwmon.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_hwmon.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_hwmon.c b/drivers/gpu/drm/i915/i915_hwmon.c index 17d30f6b84b0..7dfe1784153f 100644 --- a/drivers/gpu/drm/i915/i915_hwmon.c +++ b/drivers/gpu/drm/i915/i915_hwmon.c @@ -7,6 +7,7 @@ #include <linux/hwmon-sysfs.h> #include <linux/jiffies.h> #include <linux/types.h> +#include <linux/units.h> #include "i915_drv.h" #include "i915_hwmon.h" @@ -32,6 +33,7 @@ struct hwm_reg { i915_reg_t gt_perf_status; + i915_reg_t pkg_temp; i915_reg_t pkg_power_sku_unit; i915_reg_t pkg_power_sku; i915_reg_t pkg_rapl_limit; @@ -280,6 +282,7 @@ static const struct attribute_group *hwm_groups[] = { }; static const struct hwmon_channel_info * const hwm_info[] = { + HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT), HWMON_CHANNEL_INFO(in, HWMON_I_INPUT), HWMON_CHANNEL_INFO(power, HWMON_P_MAX | HWMON_P_RATED_MAX | HWMON_P_CRIT), HWMON_CHANNEL_INFO(energy, HWMON_E_INPUT), @@ -311,6 +314,37 @@ static int hwm_pcode_write_i1(struct drm_i915_private *i915, u32 uval) } static umode_t +hwm_temp_is_visible(const struct hwm_drvdata *ddat, u32 attr) +{ + struct i915_hwmon *hwmon = ddat->hwmon; + + if (attr == hwmon_temp_input && i915_mmio_reg_valid(hwmon->rg.pkg_temp)) + return 0444; + + return 0; +} + +static int +hwm_temp_read(struct hwm_drvdata *ddat, u32 attr, long *val) +{ + struct i915_hwmon *hwmon = ddat->hwmon; + intel_wakeref_t wakeref; + u32 reg_val; + + switch (attr) { + case hwmon_temp_input: + with_intel_runtime_pm(ddat->uncore->rpm, wakeref) + reg_val = intel_uncore_read(ddat->uncore, hwmon->rg.pkg_temp); + + /* HW register value is in degrees Celsius, convert to millidegrees. */ + *val = REG_FIELD_GET(TEMP_MASK, reg_val) * MILLIDEGREE_PER_DEGREE; + return 0; + default: + return -EOPNOTSUPP; + } +} + +static umode_t hwm_in_is_visible(const struct hwm_drvdata *ddat, u32 attr) { struct drm_i915_private *i915 = ddat->uncore->i915; @@ -692,6 +726,8 @@ hwm_is_visible(const void *drvdata, enum hwmon_sensor_types type, struct hwm_drvdata *ddat = (struct hwm_drvdata *)drvdata; switch (type) { + case hwmon_temp: + return hwm_temp_is_visible(ddat, attr); case hwmon_in: return hwm_in_is_visible(ddat, attr); case hwmon_power: @@ -714,6 +750,8 @@ hwm_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, struct hwm_drvdata *ddat = dev_get_drvdata(dev); switch (type) { + case hwmon_temp: + return hwm_temp_read(ddat, attr, val); case hwmon_in: return hwm_in_read(ddat, attr, val); case hwmon_power: @@ -810,6 +848,7 @@ hwm_get_preregistration_info(struct drm_i915_private *i915) hwmon->rg.gt_perf_status = GEN12_RPSTAT1; if (IS_DG1(i915) || IS_DG2(i915)) { + hwmon->rg.pkg_temp = PCU_PACKAGE_TEMPERATURE; hwmon->rg.pkg_power_sku_unit = PCU_PACKAGE_POWER_SKU_UNIT; hwmon->rg.pkg_power_sku = PCU_PACKAGE_POWER_SKU; hwmon->rg.pkg_rapl_limit = PCU_PACKAGE_RAPL_LIMIT; @@ -817,6 +856,7 @@ hwm_get_preregistration_info(struct drm_i915_private *i915) hwmon->rg.energy_status_tile = INVALID_MMIO_REG; hwmon->rg.fan_speed = PCU_PWM_FAN_SPEED; } else { + hwmon->rg.pkg_temp = INVALID_MMIO_REG; hwmon->rg.pkg_power_sku_unit = INVALID_MMIO_REG; hwmon->rg.pkg_power_sku = INVALID_MMIO_REG; hwmon->rg.pkg_rapl_limit = INVALID_MMIO_REG; |