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hwmon: (occ) Add sysfs entries for additional extended status bits 

Add sysfs entries for DVFS due to a VRM Vdd over-temperature condition,
and add the GPU throttling condition bits (such that if bit 1 is set,
GPU1 is throttling).

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20220215151022.7498-4-eajames@linux.ibm.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Eddie James 2022-02-15 09:10:21 -06:00 коммит произвёл Guenter Roeck
Родитель a25126fc32
Коммит a03d896988
1 изменённых файлов: 24 добавлений и 0 удалений
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24
drivers/hwmon/occ/sysfs.c
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@ -19,6 +19,8 @@
#define OCC_EXT_STAT_DVFS_POWER BIT(6)
#define OCC_EXT_STAT_MEM_THROTTLE BIT(5)
#define OCC_EXT_STAT_QUICK_DROP BIT(4)
#define OCC_EXT_STAT_DVFS_VDD BIT(3)
#define OCC_EXT_STAT_GPU_THROTTLE GENMASK(2, 0)
static ssize_t occ_sysfs_show(struct device *dev,
struct device_attribute *attr, char *buf)
@ -69,6 +71,12 @@ static ssize_t occ_sysfs_show(struct device *dev,
case 9:
val = header->mode;
break;
case 10:
val = !!(header->ext_status & OCC_EXT_STAT_DVFS_VDD);
break;
case 11:
val = header->ext_status & OCC_EXT_STAT_GPU_THROTTLE;
break;
default:
return -EINVAL;
}
@ -96,6 +104,8 @@ static SENSOR_DEVICE_ATTR(occ_state, 0444, occ_sysfs_show, NULL, 6);
static SENSOR_DEVICE_ATTR(occs_present, 0444, occ_sysfs_show, NULL, 7);
static SENSOR_DEVICE_ATTR(occ_ips_status, 0444, occ_sysfs_show, NULL, 8);
static SENSOR_DEVICE_ATTR(occ_mode, 0444, occ_sysfs_show, NULL, 9);
static SENSOR_DEVICE_ATTR(occ_dvfs_vdd, 0444, occ_sysfs_show, NULL, 10);
static SENSOR_DEVICE_ATTR(occ_gpu_throttle, 0444, occ_sysfs_show, NULL, 11);
static DEVICE_ATTR_RO(occ_error);
static struct attribute *occ_attributes[] = {
@ -109,6 +119,8 @@ static struct attribute *occ_attributes[] = {
&sensor_dev_attr_occs_present.dev_attr.attr,
&sensor_dev_attr_occ_ips_status.dev_attr.attr,
&sensor_dev_attr_occ_mode.dev_attr.attr,
&sensor_dev_attr_occ_dvfs_vdd.dev_attr.attr,
&sensor_dev_attr_occ_gpu_throttle.dev_attr.attr,
&dev_attr_occ_error.attr,
NULL
};
@ -166,6 +178,18 @@ void occ_sysfs_poll_done(struct occ *occ)
sysfs_notify(&occ->bus_dev->kobj, NULL, name);
}
if ((header->ext_status & OCC_EXT_STAT_DVFS_VDD) !=
(occ->prev_ext_stat & OCC_EXT_STAT_DVFS_VDD)) {
name = sensor_dev_attr_occ_dvfs_vdd.dev_attr.attr.name;
sysfs_notify(&occ->bus_dev->kobj, NULL, name);
}
if ((header->ext_status & OCC_EXT_STAT_GPU_THROTTLE) !=
(occ->prev_ext_stat & OCC_EXT_STAT_GPU_THROTTLE)) {
name = sensor_dev_attr_occ_gpu_throttle.dev_attr.attr.name;
sysfs_notify(&occ->bus_dev->kobj, NULL, name);
}
if ((header->status & OCC_STAT_MASTER) &&
header->occs_present != occ->prev_occs_present) {
name = sensor_dev_attr_occs_present.dev_attr.attr.name;