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hwmon: (occ) Add sysfs entry for IPS (Idle Power Saver) status

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BMC control applications need to check the Idle Power Saver status
byte returned by the OCC poll response, so export it in sysfs with
the other OCC-specific data.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20220215151022.7498-2-eajames@linux.ibm.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Eddie James 2022-02-15 09:10:19 -06:00 committed by Guenter Roeck
parent 567e77a2c2
commit 6109c3e190
2 changed files with 12 additions and 0 deletions
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1
drivers/hwmon/occ/common.h
View file

@ -119,6 +119,7 @@ struct occ {
u8 prev_stat;
u8 prev_ext_stat;
u8 prev_occs_present;
u8 prev_ips_status;
};
int occ_setup(struct occ *occ, const char *name);

11
drivers/hwmon/occ/sysfs.c
View file

@ -63,6 +63,9 @@ static ssize_t occ_sysfs_show(struct device *dev,
else
val = 1;
break;
case 8:
val = header->ips_status;
break;
default:
return -EINVAL;
}
@ -88,6 +91,7 @@ static SENSOR_DEVICE_ATTR(occ_mem_throttle, 0444, occ_sysfs_show, NULL, 4);
static SENSOR_DEVICE_ATTR(occ_quick_pwr_drop, 0444, occ_sysfs_show, NULL, 5);
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 DEVICE_ATTR_RO(occ_error);
static struct attribute *occ_attributes[] = {
@ -99,6 +103,7 @@ static struct attribute *occ_attributes[] = {
&sensor_dev_attr_occ_quick_pwr_drop.dev_attr.attr,
&sensor_dev_attr_occ_state.dev_attr.attr,
&sensor_dev_attr_occs_present.dev_attr.attr,
&sensor_dev_attr_occ_ips_status.dev_attr.attr,
&dev_attr_occ_error.attr,
NULL
};
@ -162,6 +167,11 @@ void occ_sysfs_poll_done(struct occ *occ)
sysfs_notify(&occ->bus_dev->kobj, NULL, name);
}
if (header->ips_status != occ->prev_ips_status) {
name = sensor_dev_attr_occ_ips_status.dev_attr.attr.name;
sysfs_notify(&occ->bus_dev->kobj, NULL, name);
}
if (occ->error && occ->error != occ->prev_error) {
name = dev_attr_occ_error.attr.name;
sysfs_notify(&occ->bus_dev->kobj, NULL, name);
@ -174,6 +184,7 @@ void occ_sysfs_poll_done(struct occ *occ)
occ->prev_stat = header->status;
occ->prev_ext_stat = header->ext_status;
occ->prev_occs_present = header->occs_present;
occ->prev_ips_status = header->ips_status;
}
int occ_setup_sysfs(struct occ *occ)