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hwmon: (pmbus/core) Notify hwmon events

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Notify hwmon events using the pmbus irq handler.

Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Naresh Solanki <naresh.solanki@9elements.com>
Link: https://lore.kernel.org/r/20230301164434.1928237-4-Naresh.Solanki@9elements.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Patrick Rudolph 2023-03-01 17:44:34 +01:00 committed by Guenter Roeck
parent 221819ca4c
commit f469bde9af
1 changed files with 40 additions and 6 deletions
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46
drivers/hwmon/pmbus/pmbus_core.c
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@ -2761,7 +2761,35 @@ static int __maybe_unused pmbus_is_enabled(struct device *dev, u8 page)
return !!(ret & PB_OPERATION_CONTROL_ON);
}
static int _pmbus_get_flags(struct pmbus_data *data, u8 page, unsigned int *flags)
#define to_dev_attr(_dev_attr) \
container_of(_dev_attr, struct device_attribute, attr)
static void pmbus_notify(struct pmbus_data *data, int page, int reg, int flags)
{
int i;
for (i = 0; i < data->num_attributes; i++) {
struct device_attribute *da = to_dev_attr(data->group.attrs[i]);
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
int index = attr->index;
u16 smask = pb_index_to_mask(index);
u8 spage = pb_index_to_page(index);
u16 sreg = pb_index_to_reg(index);
if (reg == sreg && page == spage && (smask & flags)) {
dev_dbg(data->dev, "sysfs notify: %s", da->attr.name);
sysfs_notify(&data->dev->kobj, NULL, da->attr.name);
kobject_uevent(&data->dev->kobj, KOBJ_CHANGE);
flags &= ~smask;
}
if (!flags)
break;
}
}
static int _pmbus_get_flags(struct pmbus_data *data, u8 page, unsigned int *flags,
bool notify)
{
int i, status;
const struct pmbus_status_category *cat;
@ -2785,6 +2813,10 @@ static int _pmbus_get_flags(struct pmbus_data *data, u8 page, unsigned int *flag
if (status & bit->pflag)
*flags |= bit->rflag;
}
if (notify && status)
pmbus_notify(data, page, cat->reg, status);
}
/*
@ -2828,12 +2860,13 @@ static int _pmbus_get_flags(struct pmbus_data *data, u8 page, unsigned int *flag
return 0;
}
static int __maybe_unused pmbus_get_flags(struct pmbus_data *data, u8 page, unsigned int *flags)
static int __maybe_unused pmbus_get_flags(struct pmbus_data *data, u8 page, unsigned int *flags,
bool notify)
{
int ret;
mutex_lock(&data->update_lock);
ret = _pmbus_get_flags(data, page, flags);
ret = _pmbus_get_flags(data, page, flags, notify);
mutex_unlock(&data->update_lock);
return ret;
@ -2878,7 +2911,7 @@ static int pmbus_regulator_get_error_flags(struct regulator_dev *rdev, unsigned
struct i2c_client *client = to_i2c_client(dev->parent);
struct pmbus_data *data = i2c_get_clientdata(client);
return pmbus_get_flags(data, rdev_get_id(rdev), flags);
return pmbus_get_flags(data, rdev_get_id(rdev), flags, false);
}
static int pmbus_regulator_get_status(struct regulator_dev *rdev)
@ -3114,9 +3147,10 @@ static irqreturn_t pmbus_fault_handler(int irq, void *pdata)
{
struct pmbus_data *data = pdata;
struct i2c_client *client = to_i2c_client(data->dev);
int i, status;
mutex_lock(&data->update_lock);
/* TODO: Check status flag & notify hwmon events */
for (i = 0; i < data->info->pages; i++)
_pmbus_get_flags(data, i, &status, true);
pmbus_clear_faults(client);
mutex_unlock(&data->update_lock);