Re: [PATCH v2 2/4] hwmon: (pmbus/core) Generalise pmbus get status
From: Naresh Solanki
Date: Tue Feb 14 2023 - 09:11:25 EST
Hi
On 11-02-2023 08:37 pm, Guenter Roeck wrote:
On Tue, Feb 07, 2023 at 01:02:39PM +0100, Naresh Solanki wrote:
Add function pmbus get status that can be used to get both pmbus
specific status & regulator status
Signed-off-by: Naresh Solanki <Naresh.Solanki@xxxxxxxxxxxxx>
...
Changes in V2:
- Add __maybe_unused attribute for pmbus_get_status function
- Remove unrelated changes
---
drivers/hwmon/pmbus/pmbus_core.c | 118 +++++++++++++++++--------------
1 file changed, 66 insertions(+), 52 deletions(-)
diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
index 1b70cf3be313..5ccae8126a56 100644
--- a/drivers/hwmon/pmbus/pmbus_core.c
+++ b/drivers/hwmon/pmbus/pmbus_core.c
@@ -2735,61 +2735,14 @@ static const struct pmbus_status_category __maybe_unused pmbus_status_flag_map[]
},
};
-#if IS_ENABLED(CONFIG_REGULATOR)
-static int pmbus_regulator_is_enabled(struct regulator_dev *rdev)
-{
- struct device *dev = rdev_get_dev(rdev);
- struct i2c_client *client = to_i2c_client(dev->parent);
- struct pmbus_data *data = i2c_get_clientdata(client);
- u8 page = rdev_get_id(rdev);
- int ret;
-
- mutex_lock(&data->update_lock);
- ret = _pmbus_read_byte_data(client, page, PMBUS_OPERATION);
- mutex_unlock(&data->update_lock);
-
- if (ret < 0)
- return ret;
-
- return !!(ret & PB_OPERATION_CONTROL_ON);
-}
-
-static int _pmbus_regulator_on_off(struct regulator_dev *rdev, bool enable)
-{
- struct device *dev = rdev_get_dev(rdev);
- struct i2c_client *client = to_i2c_client(dev->parent);
- struct pmbus_data *data = i2c_get_clientdata(client);
- u8 page = rdev_get_id(rdev);
- int ret;
-
- mutex_lock(&data->update_lock);
- ret = pmbus_update_byte_data(client, page, PMBUS_OPERATION,
- PB_OPERATION_CONTROL_ON,
- enable ? PB_OPERATION_CONTROL_ON : 0);
- mutex_unlock(&data->update_lock);
-
- return ret;
-}
-
-static int pmbus_regulator_enable(struct regulator_dev *rdev)
-{
- return _pmbus_regulator_on_off(rdev, 1);
-}
-
-static int pmbus_regulator_disable(struct regulator_dev *rdev)
-{
- return _pmbus_regulator_on_off(rdev, 0);
-}
-static int pmbus_regulator_get_error_flags(struct regulator_dev *rdev, unsigned int *flags)
+static int __maybe_unused pmbus_get_flags(struct pmbus_data *data, u8 page, unsigned int *flags)
{
- int i, status;
+ int i, status, ret;
const struct pmbus_status_category *cat;
const struct pmbus_status_assoc *bit;
- struct device *dev = rdev_get_dev(rdev);
- struct i2c_client *client = to_i2c_client(dev->parent);
- struct pmbus_data *data = i2c_get_clientdata(client);
- u8 page = rdev_get_id(rdev);
+ struct device *dev = data->dev;
+ struct i2c_client *client = to_i2c_client(dev);
int func = data->info->func[page];
*flags = 0;
@@ -2827,7 +2780,13 @@ static int pmbus_regulator_get_error_flags(struct regulator_dev *rdev, unsigned
if (status < 0)
return status;
- if (pmbus_regulator_is_enabled(rdev)) {
+ mutex_lock(&data->update_lock);
+ ret = _pmbus_read_byte_data(client, page, PMBUS_OPERATION);
+ mutex_unlock(&data->update_lock);
+ if (ret < 0)
+ return status;
+
+ if (ret & PB_OPERATION_CONTROL_ON) {
This code is now executed twice. Please keep the original function,
just rename it to pmbus_is_enabled() or similar, then call it from
pmbus_regulator_is_enabled() which then just needs to adjust the
parameter (and maybe pass 'dev' as argument).
Sure
if (status & PB_STATUS_OFF)
*flags |= REGULATOR_ERROR_FAIL;
@@ -2855,6 +2814,61 @@ static int pmbus_regulator_get_error_flags(struct regulator_dev *rdev, unsigned
return 0;
}
+#if IS_ENABLED(CONFIG_REGULATOR)
+static int pmbus_regulator_is_enabled(struct regulator_dev *rdev)
+{
+ struct device *dev = rdev_get_dev(rdev);
+ struct i2c_client *client = to_i2c_client(dev->parent);
+ struct pmbus_data *data = i2c_get_clientdata(client);
+ u8 page = rdev_get_id(rdev);
+ int ret;
+
+ mutex_lock(&data->update_lock);
+ ret = _pmbus_read_byte_data(client, page, PMBUS_OPERATION);
+ mutex_unlock(&data->update_lock);
+
+ if (ret < 0)
+ return ret;
+
+ return !!(ret & PB_OPERATION_CONTROL_ON);
This could then be as simple as
return pmbus_is_enabled(rdev_get_dev(rdev));
Sure
Thanks,
Guenter
+}
+
+static int _pmbus_regulator_on_off(struct regulator_dev *rdev, bool enable)
+{
+ struct device *dev = rdev_get_dev(rdev);
+ struct i2c_client *client = to_i2c_client(dev->parent);
+ struct pmbus_data *data = i2c_get_clientdata(client);
+ u8 page = rdev_get_id(rdev);
+ int ret;
+
+ mutex_lock(&data->update_lock);
+ ret = pmbus_update_byte_data(client, page, PMBUS_OPERATION,
+ PB_OPERATION_CONTROL_ON,
+ enable ? PB_OPERATION_CONTROL_ON : 0);
+ mutex_unlock(&data->update_lock);
+
+ return ret;
+}
+
+static int pmbus_regulator_enable(struct regulator_dev *rdev)
+{
+ return _pmbus_regulator_on_off(rdev, 1);
+}
+
+static int pmbus_regulator_disable(struct regulator_dev *rdev)
+{
+ return _pmbus_regulator_on_off(rdev, 0);
+}
+
+static int pmbus_regulator_get_error_flags(struct regulator_dev *rdev, unsigned int *flags)
+{
+ struct device *dev = rdev_get_dev(rdev);
+ 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);
+}
+
static int pmbus_regulator_get_status(struct regulator_dev *rdev)
{
struct device *dev = rdev_get_dev(rdev);