hwmon: (occ) Add sysfs entry for OCC mode

BMC control applications need to check the OCC mode 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/20220215151022.7498-3-eajames@linux.ibm.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/occ/common.h b/drivers/hwmon/occ/common.h
index a88c66d36e38a6927ecaae4b179010887a658118..2dd4a4d240c0f775b24cfe5852d72638de725d83 100644 (file)
--- a/drivers/hwmon/occ/common.h
+++ b/drivers/hwmon/occ/common.h
@@ -120,6 +120,7 @@ struct occ {
        u8 prev_ext_stat;
        u8 prev_occs_present;
        u8 prev_ips_status;
+       u8 prev_mode;
 };
 
 int occ_setup(struct occ *occ, const char *name);

diff --git a/drivers/hwmon/occ/sysfs.c b/drivers/hwmon/occ/sysfs.c
index 6dc69c9aa4c290cd029c226e5be7c922a5358848..88f655887c958d8699b76a820fd23c1927f5fe0d 100644 (file)
--- a/drivers/hwmon/occ/sysfs.c
+++ b/drivers/hwmon/occ/sysfs.c
@@ -66,6 +66,9 @@ static ssize_t occ_sysfs_show(struct device *dev,
        case 8:
                val = header->ips_status;
                break;
+       case 9:
+               val = header->mode;
+               break;
        default:
                return -EINVAL;
        }
@@ -92,6 +95,7 @@ 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 SENSOR_DEVICE_ATTR(occ_mode, 0444, occ_sysfs_show, NULL, 9);
 static DEVICE_ATTR_RO(occ_error);
 
 static struct attribute *occ_attributes[] = {
@@ -104,6 +108,7 @@ static struct attribute *occ_attributes[] = {
        &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,
+       &sensor_dev_attr_occ_mode.dev_attr.attr,
        &dev_attr_occ_error.attr,
        NULL
 };
@@ -172,6 +177,11 @@ void occ_sysfs_poll_done(struct occ *occ)
                sysfs_notify(&occ->bus_dev->kobj, NULL, name);
        }
 
+       if (header->mode != occ->prev_mode) {
+               name = sensor_dev_attr_occ_mode.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);
@@ -185,6 +195,7 @@ done:
        occ->prev_ext_stat = header->ext_status;
        occ->prev_occs_present = header->occs_present;
        occ->prev_ips_status = header->ips_status;
+       occ->prev_mode = header->mode;
 }
 
 int occ_setup_sysfs(struct occ *occ)