Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/linux/pwm.h b/include/linux/pwm.h
index 56518ad..b2c9c46 100644
--- a/include/linux/pwm.h
+++ b/include/linux/pwm.h
@@ -242,11 +242,7 @@
* struct pwm_ops - PWM controller operations
* @request: optional hook for requesting a PWM
* @free: optional hook for freeing a PWM
- * @config: configure duty cycles and period length for this PWM
- * @set_polarity: configure the polarity of this PWM
* @capture: capture and report PWM signal
- * @enable: enable PWM output toggling
- * @disable: disable PWM output toggling
* @apply: atomically apply a new PWM config. The state argument
* should be adjusted with the real hardware config (if the
* approximate the period or duty_cycle value, state should
@@ -254,53 +250,56 @@
* @get_state: get the current PWM state. This function is only
* called once per PWM device when the PWM chip is
* registered.
- * @dbg_show: optional routine to show contents in debugfs
* @owner: helps prevent removal of modules exporting active PWMs
+ * @config: configure duty cycles and period length for this PWM
+ * @set_polarity: configure the polarity of this PWM
+ * @enable: enable PWM output toggling
+ * @disable: disable PWM output toggling
*/
struct pwm_ops {
int (*request)(struct pwm_chip *chip, struct pwm_device *pwm);
void (*free)(struct pwm_chip *chip, struct pwm_device *pwm);
+ int (*capture)(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct pwm_capture *result, unsigned long timeout);
+ int (*apply)(struct pwm_chip *chip, struct pwm_device *pwm,
+ const struct pwm_state *state);
+ void (*get_state)(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct pwm_state *state);
+ struct module *owner;
+
+ /* Only used by legacy drivers */
int (*config)(struct pwm_chip *chip, struct pwm_device *pwm,
int duty_ns, int period_ns);
int (*set_polarity)(struct pwm_chip *chip, struct pwm_device *pwm,
enum pwm_polarity polarity);
- int (*capture)(struct pwm_chip *chip, struct pwm_device *pwm,
- struct pwm_capture *result, unsigned long timeout);
int (*enable)(struct pwm_chip *chip, struct pwm_device *pwm);
void (*disable)(struct pwm_chip *chip, struct pwm_device *pwm);
- int (*apply)(struct pwm_chip *chip, struct pwm_device *pwm,
- struct pwm_state *state);
- void (*get_state)(struct pwm_chip *chip, struct pwm_device *pwm,
- struct pwm_state *state);
-#ifdef CONFIG_DEBUG_FS
- void (*dbg_show)(struct pwm_chip *chip, struct seq_file *s);
-#endif
- struct module *owner;
};
/**
* struct pwm_chip - abstract a PWM controller
* @dev: device providing the PWMs
- * @list: list node for internal use
* @ops: callbacks for this PWM controller
* @base: number of first PWM controlled by this chip
* @npwm: number of PWMs controlled by this chip
- * @pwms: array of PWM devices allocated by the framework
* @of_xlate: request a PWM device given a device tree PWM specifier
* @of_pwm_n_cells: number of cells expected in the device tree PWM specifier
+ * @list: list node for internal use
+ * @pwms: array of PWM devices allocated by the framework
*/
struct pwm_chip {
struct device *dev;
- struct list_head list;
const struct pwm_ops *ops;
int base;
unsigned int npwm;
- struct pwm_device *pwms;
-
struct pwm_device * (*of_xlate)(struct pwm_chip *pc,
const struct of_phandle_args *args);
unsigned int of_pwm_n_cells;
+
+ /* only used internally by the PWM framework */
+ struct list_head list;
+ struct pwm_device *pwms;
};
/**
@@ -317,7 +316,7 @@
/* PWM user APIs */
struct pwm_device *pwm_request(int pwm_id, const char *label);
void pwm_free(struct pwm_device *pwm);
-int pwm_apply_state(struct pwm_device *pwm, struct pwm_state *state);
+int pwm_apply_state(struct pwm_device *pwm, const struct pwm_state *state);
int pwm_adjust_config(struct pwm_device *pwm);
/**
@@ -349,42 +348,6 @@
}
/**
- * pwm_set_polarity() - configure the polarity of a PWM signal
- * @pwm: PWM device
- * @polarity: new polarity of the PWM signal
- *
- * Note that the polarity cannot be configured while the PWM device is
- * enabled.
- *
- * Returns: 0 on success or a negative error code on failure.
- */
-static inline int pwm_set_polarity(struct pwm_device *pwm,
- enum pwm_polarity polarity)
-{
- struct pwm_state state;
-
- if (!pwm)
- return -EINVAL;
-
- pwm_get_state(pwm, &state);
- if (state.polarity == polarity)
- return 0;
-
- /*
- * Changing the polarity of a running PWM without adjusting the
- * dutycycle/period value is a bit risky (can introduce glitches).
- * Return -EBUSY in this case.
- * Note that this is allowed when using pwm_apply_state() because
- * the user specifies all the parameters.
- */
- if (state.enabled)
- return -EBUSY;
-
- state.polarity = polarity;
- return pwm_apply_state(pwm, &state);
-}
-
-/**
* pwm_enable() - start a PWM output toggling
* @pwm: PWM device
*
@@ -442,12 +405,16 @@
const struct of_phandle_args *args);
struct pwm_device *pwm_get(struct device *dev, const char *con_id);
-struct pwm_device *of_pwm_get(struct device_node *np, const char *con_id);
+struct pwm_device *of_pwm_get(struct device *dev, struct device_node *np,
+ const char *con_id);
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);
void devm_pwm_put(struct device *dev, struct pwm_device *pwm);
#else
static inline struct pwm_device *pwm_request(int pwm_id, const char *label)
@@ -483,12 +450,6 @@
return -EINVAL;
}
-static inline int pwm_set_polarity(struct pwm_device *pwm,
- enum pwm_polarity polarity)
-{
- return -ENOTSUPP;
-}
-
static inline int pwm_enable(struct pwm_device *pwm)
{
return -EINVAL;
@@ -536,7 +497,8 @@
return ERR_PTR(-ENODEV);
}
-static inline struct pwm_device *of_pwm_get(struct device_node *np,
+static inline struct pwm_device *of_pwm_get(struct device *dev,
+ struct device_node *np,
const char *con_id)
{
return ERR_PTR(-ENODEV);
@@ -559,6 +521,13 @@
return ERR_PTR(-ENODEV);
}
+static inline struct pwm_device *
+devm_fwnode_pwm_get(struct device *dev, struct fwnode_handle *fwnode,
+ const char *con_id)
+{
+ return ERR_PTR(-ENODEV);
+}
+
static inline void devm_pwm_put(struct device *dev, struct pwm_device *pwm)
{
}
@@ -639,7 +608,6 @@
#ifdef CONFIG_PWM_SYSFS
void pwmchip_sysfs_export(struct pwm_chip *chip);
void pwmchip_sysfs_unexport(struct pwm_chip *chip);
-void pwmchip_sysfs_unexport_children(struct pwm_chip *chip);
#else
static inline void pwmchip_sysfs_export(struct pwm_chip *chip)
{
@@ -648,10 +616,6 @@
static inline void pwmchip_sysfs_unexport(struct pwm_chip *chip)
{
}
-
-static inline void pwmchip_sysfs_unexport_children(struct pwm_chip *chip)
-{
-}
#endif /* CONFIG_PWM_SYSFS */
#endif /* __LINUX_PWM_H */