pwm: core: Get rid of unused devm_of_pwm_get()

The devm_of_pwm_get() has recently lost its single user, drop
the dead API as well.

Note, the new code should use either plain pwm_get() or managed
devm_pwm_get() or devm_fwnode_pwm_get() APIs.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20220826172642.16404-2-andriy.shevchenko@linux.intel.comSigned-off-by: Guenter Roeck <linux@roeck-us.net>

Documentation/driver-api/driver-model/devres.rst

@@ -401,7 +401,6 @@ POWER
 
 PWM
   devm_pwm_get()
-  devm_of_pwm_get()
   devm_fwnode_pwm_get()
 
 REGULATOR

Documentation/driver-api/pwm.rst

@@ -40,8 +40,7 @@ after usage with pwm_free().
 
 New users should use the pwm_get() function and pass to it the consumer
 device or a consumer name. pwm_put() is used to free the PWM device. Managed
-variants of the getter, devm_pwm_get(), devm_of_pwm_get(),
-devm_fwnode_pwm_get(), also exist.
+variants of the getter, devm_pwm_get() and devm_fwnode_pwm_get(), also exist.
 
 After being requested, a PWM has to be configured using::
 

drivers/pwm/core.c

@@ -1070,36 +1070,6 @@ struct pwm_device *devm_pwm_get(struct device *dev, const char *con_id)
 }
 EXPORT_SYMBOL_GPL(devm_pwm_get);
 
-/**
- * devm_of_pwm_get() - resource managed of_pwm_get()
- * @dev: device for PWM consumer
- * @np: device node to get the PWM from
- * @con_id: consumer name
- *
- * This function performs like of_pwm_get() but the acquired PWM device will
- * automatically be released on driver detach.
- *
- * Returns: A pointer to the requested PWM device or an ERR_PTR()-encoded
- * error code on failure.
- */
-struct pwm_device *devm_of_pwm_get(struct device *dev, struct device_node *np,
-				   const char *con_id)
-{
-	struct pwm_device *pwm;
-	int ret;
-
-	pwm = of_pwm_get(dev, np, con_id);
-	if (IS_ERR(pwm))
-		return pwm;
-
-	ret = devm_add_action_or_reset(dev, devm_pwm_release, pwm);
-	if (ret)
-		return ERR_PTR(ret);
-
-	return pwm;
-}
-EXPORT_SYMBOL_GPL(devm_of_pwm_get);
-
 /**
  * devm_fwnode_pwm_get() - request a resource managed PWM from firmware node
  * @dev: device for PWM consumer

include/linux/pwm.h

@@ -408,8 +408,6 @@ struct pwm_device *of_pwm_get(struct device *dev, struct device_node *np,
 void pwm_put(struct pwm_device *pwm);
 
 struct pwm_device *devm_pwm_get(struct device *dev, const char *con_id);
-struct pwm_device *devm_of_pwm_get(struct device *dev, struct device_node *np,
-				   const char *con_id);
 struct pwm_device *devm_fwnode_pwm_get(struct device *dev,
 				       struct fwnode_handle *fwnode,
 				       const char *con_id);
@@ -517,14 +515,6 @@ static inline struct pwm_device *devm_pwm_get(struct device *dev,
 	return ERR_PTR(-ENODEV);
 }
 
-static inline struct pwm_device *devm_of_pwm_get(struct device *dev,
-						 struct device_node *np,
-						 const char *con_id)
-{
-	might_sleep();
-	return ERR_PTR(-ENODEV);
-}
-
 static inline struct pwm_device *
 devm_fwnode_pwm_get(struct device *dev, struct fwnode_handle *fwnode,
 		    const char *con_id)