Commit a0b66a73 authored by Linus Walleij's avatar Linus Walleij
Browse files

gpio: Rename variable in core APIs 



There is struct gpio *gc, *chip and *gpiochip, and yes
I am responsible for some of the inconsistencies. I want
this to be just gc everywhere for minimizing cognitive
resistance when reading the code: more compact function
signatures and less clutter.

Purely syntactic changes intended. No semantic effects.

Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20200329140405.52276-1-linus.walleij@linaro.org


Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 89ad556b

drivers/gpio/gpiolib.c

+413 −412

File changed.

Preview size limit exceeded, changes collapsed.

include/linux/gpio/driver.h

+69 −69
Original line number Diff line number Diff line
@@ -87,7 +87,7 @@ struct gpio_irq_chip { 
	 * @need_valid_mask to make these GPIO lines unavailable for

	 * translation.

	 */

	int (*child_to_parent_hwirq)(struct gpio_chip *chip,

	int (*child_to_parent_hwirq)(struct gpio_chip *gc,

				     unsigned int child_hwirq,

				     unsigned int child_type,

				     unsigned int *parent_hwirq,
@@ -102,7 +102,7 @@ struct gpio_irq_chip { 
	 * variant named &gpiochip_populate_parent_fwspec_fourcell is also

	 * available.

	 */

	void *(*populate_parent_alloc_arg)(struct gpio_chip *chip,

	void *(*populate_parent_alloc_arg)(struct gpio_chip *gc,

				       unsigned int parent_hwirq,

				       unsigned int parent_type);
@@ -114,7 +114,7 @@ struct gpio_irq_chip { 
	 * callback. If this is not specified, then a default callback will be

	 * provided that returns the line offset.

	 */

	unsigned int (*child_offset_to_irq)(struct gpio_chip *chip,

	unsigned int (*child_offset_to_irq)(struct gpio_chip *gc,

					    unsigned int pin);



	/**
@@ -209,7 +209,7 @@ struct gpio_irq_chip { 
	 * a particular driver wants to clear IRQ related registers

	 * in order to avoid undesired events.

	 */

	int (*init_hw)(struct gpio_chip *chip);

	int (*init_hw)(struct gpio_chip *gc);



	/**

	 * @init_valid_mask: optional routine to initialize @valid_mask, to be
@@ -220,7 +220,7 @@ struct gpio_irq_chip { 
	 * then directly set some bits to "0" if they cannot be used for

	 * interrupts.

	 */

	void (*init_valid_mask)(struct gpio_chip *chip,

	void (*init_valid_mask)(struct gpio_chip *gc,

				unsigned long *valid_mask,

				unsigned int ngpios);
@@ -348,40 +348,40 @@ struct gpio_chip { 
	struct device		*parent;

	struct module		*owner;



	int			(*request)(struct gpio_chip *chip,

	int			(*request)(struct gpio_chip *gc,

						unsigned offset);

	void			(*free)(struct gpio_chip *chip,

	void			(*free)(struct gpio_chip *gc,

						unsigned offset);

	int			(*get_direction)(struct gpio_chip *chip,

	int			(*get_direction)(struct gpio_chip *gc,

						unsigned offset);

	int			(*direction_input)(struct gpio_chip *chip,

	int			(*direction_input)(struct gpio_chip *gc,

						unsigned offset);

	int			(*direction_output)(struct gpio_chip *chip,

	int			(*direction_output)(struct gpio_chip *gc,

						unsigned offset, int value);

	int			(*get)(struct gpio_chip *chip,

	int			(*get)(struct gpio_chip *gc,

						unsigned offset);

	int			(*get_multiple)(struct gpio_chip *chip,

	int			(*get_multiple)(struct gpio_chip *gc,

						unsigned long *mask,

						unsigned long *bits);

	void			(*set)(struct gpio_chip *chip,

	void			(*set)(struct gpio_chip *gc,

						unsigned offset, int value);

	void			(*set_multiple)(struct gpio_chip *chip,

	void			(*set_multiple)(struct gpio_chip *gc,

						unsigned long *mask,

						unsigned long *bits);

	int			(*set_config)(struct gpio_chip *chip,

	int			(*set_config)(struct gpio_chip *gc,

					      unsigned offset,

					      unsigned long config);

	int			(*to_irq)(struct gpio_chip *chip,

	int			(*to_irq)(struct gpio_chip *gc,

						unsigned offset);



	void			(*dbg_show)(struct seq_file *s,

						struct gpio_chip *chip);

						struct gpio_chip *gc);



	int			(*init_valid_mask)(struct gpio_chip *chip,

	int			(*init_valid_mask)(struct gpio_chip *gc,

						   unsigned long *valid_mask,

						   unsigned int ngpios);



	int			(*add_pin_ranges)(struct gpio_chip *chip);

	int			(*add_pin_ranges)(struct gpio_chip *gc);



	int			base;

	u16			ngpio;
@@ -458,11 +458,11 @@ struct gpio_chip { 
#endif /* CONFIG_OF_GPIO */

};



extern const char *gpiochip_is_requested(struct gpio_chip *chip,

extern const char *gpiochip_is_requested(struct gpio_chip *gc,

			unsigned offset);



/* add/remove chips */

extern int gpiochip_add_data_with_key(struct gpio_chip *chip, void *data,

extern int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data,

				      struct lock_class_key *lock_key,

				      struct lock_class_key *request_key);
@@ -490,43 +490,43 @@ extern int gpiochip_add_data_with_key(struct gpio_chip *chip, void *data, 
 * Otherwise it returns zero as a success code.

 */

#ifdef CONFIG_LOCKDEP

#define gpiochip_add_data(chip, data) ({		\

#define gpiochip_add_data(gc, data) ({		\

		static struct lock_class_key lock_key;	\

		static struct lock_class_key request_key;	  \

		gpiochip_add_data_with_key(chip, data, &lock_key, \

		gpiochip_add_data_with_key(gc, data, &lock_key, \

					   &request_key);	  \

	})

#else

#define gpiochip_add_data(chip, data) gpiochip_add_data_with_key(chip, data, NULL, NULL)

#define gpiochip_add_data(gc, data) gpiochip_add_data_with_key(gc, data, NULL, NULL)

#endif /* CONFIG_LOCKDEP */



static inline int gpiochip_add(struct gpio_chip *chip)

static inline int gpiochip_add(struct gpio_chip *gc)

{

	return gpiochip_add_data(chip, NULL);

	return gpiochip_add_data(gc, NULL);

}

extern void gpiochip_remove(struct gpio_chip *chip);

extern int devm_gpiochip_add_data(struct device *dev, struct gpio_chip *chip,

extern void gpiochip_remove(struct gpio_chip *gc);

extern int devm_gpiochip_add_data(struct device *dev, struct gpio_chip *gc,

				  void *data);



extern struct gpio_chip *gpiochip_find(void *data,

			      int (*match)(struct gpio_chip *chip, void *data));

			      int (*match)(struct gpio_chip *gc, void *data));



bool gpiochip_line_is_irq(struct gpio_chip *chip, unsigned int offset);

int gpiochip_reqres_irq(struct gpio_chip *chip, unsigned int offset);

void gpiochip_relres_irq(struct gpio_chip *chip, unsigned int offset);

void gpiochip_disable_irq(struct gpio_chip *chip, unsigned int offset);

void gpiochip_enable_irq(struct gpio_chip *chip, unsigned int offset);

bool gpiochip_line_is_irq(struct gpio_chip *gc, unsigned int offset);

int gpiochip_reqres_irq(struct gpio_chip *gc, unsigned int offset);

void gpiochip_relres_irq(struct gpio_chip *gc, unsigned int offset);

void gpiochip_disable_irq(struct gpio_chip *gc, unsigned int offset);

void gpiochip_enable_irq(struct gpio_chip *gc, unsigned int offset);



/* Line status inquiry for drivers */

bool gpiochip_line_is_open_drain(struct gpio_chip *chip, unsigned int offset);

bool gpiochip_line_is_open_source(struct gpio_chip *chip, unsigned int offset);

bool gpiochip_line_is_open_drain(struct gpio_chip *gc, unsigned int offset);

bool gpiochip_line_is_open_source(struct gpio_chip *gc, unsigned int offset);



/* Sleep persistence inquiry for drivers */

bool gpiochip_line_is_persistent(struct gpio_chip *chip, unsigned int offset);

bool gpiochip_line_is_valid(const struct gpio_chip *chip, unsigned int offset);

bool gpiochip_line_is_persistent(struct gpio_chip *gc, unsigned int offset);

bool gpiochip_line_is_valid(const struct gpio_chip *gc, unsigned int offset);



/* get driver data */

void *gpiochip_get_data(struct gpio_chip *chip);

void *gpiochip_get_data(struct gpio_chip *gc);



struct bgpio_pdata {

	const char *label;
@@ -536,23 +536,23 @@ struct bgpio_pdata { 


#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY



void *gpiochip_populate_parent_fwspec_twocell(struct gpio_chip *chip,

void *gpiochip_populate_parent_fwspec_twocell(struct gpio_chip *gc,

					     unsigned int parent_hwirq,

					     unsigned int parent_type);

void *gpiochip_populate_parent_fwspec_fourcell(struct gpio_chip *chip,

void *gpiochip_populate_parent_fwspec_fourcell(struct gpio_chip *gc,

					      unsigned int parent_hwirq,

					      unsigned int parent_type);



#else



static inline void *gpiochip_populate_parent_fwspec_twocell(struct gpio_chip *chip,

static inline void *gpiochip_populate_parent_fwspec_twocell(struct gpio_chip *gc,

						    unsigned int parent_hwirq,

						    unsigned int parent_type)

{

	return NULL;

}



static inline void *gpiochip_populate_parent_fwspec_fourcell(struct gpio_chip *chip,

static inline void *gpiochip_populate_parent_fwspec_fourcell(struct gpio_chip *gc,

						     unsigned int parent_hwirq,

						     unsigned int parent_type)

{
@@ -583,11 +583,11 @@ int gpiochip_irq_domain_activate(struct irq_domain *domain, 
void gpiochip_irq_domain_deactivate(struct irq_domain *domain,

				    struct irq_data *data);



void gpiochip_set_nested_irqchip(struct gpio_chip *gpiochip,

void gpiochip_set_nested_irqchip(struct gpio_chip *gc,

		struct irq_chip *irqchip,

		unsigned int parent_irq);



int gpiochip_irqchip_add_key(struct gpio_chip *gpiochip,

int gpiochip_irqchip_add_key(struct gpio_chip *gc,

			     struct irq_chip *irqchip,

			     unsigned int first_irq,

			     irq_flow_handler_t handler,
@@ -596,7 +596,7 @@ int gpiochip_irqchip_add_key(struct gpio_chip *gpiochip, 
			     struct lock_class_key *lock_key,

			     struct lock_class_key *request_key);



bool gpiochip_irqchip_irq_valid(const struct gpio_chip *gpiochip,

bool gpiochip_irqchip_irq_valid(const struct gpio_chip *gc,

				unsigned int offset);



#ifdef CONFIG_LOCKDEP
@@ -607,7 +607,7 @@ bool gpiochip_irqchip_irq_valid(const struct gpio_chip *gpiochip, 
 * boilerplate static inlines provides such a key for each

 * unique instance.

 */

static inline int gpiochip_irqchip_add(struct gpio_chip *gpiochip,

static inline int gpiochip_irqchip_add(struct gpio_chip *gc,

				       struct irq_chip *irqchip,

				       unsigned int first_irq,

				       irq_flow_handler_t handler,
@@ -616,12 +616,12 @@ static inline int gpiochip_irqchip_add(struct gpio_chip *gpiochip, 
	static struct lock_class_key lock_key;

	static struct lock_class_key request_key;



	return gpiochip_irqchip_add_key(gpiochip, irqchip, first_irq,

	return gpiochip_irqchip_add_key(gc, irqchip, first_irq,

					handler, type, false,

					&lock_key, &request_key);

}



static inline int gpiochip_irqchip_add_nested(struct gpio_chip *gpiochip,

static inline int gpiochip_irqchip_add_nested(struct gpio_chip *gc,

			  struct irq_chip *irqchip,

			  unsigned int first_irq,

			  irq_flow_handler_t handler,
@@ -631,35 +631,35 @@ static inline int gpiochip_irqchip_add_nested(struct gpio_chip *gpiochip, 
	static struct lock_class_key lock_key;

	static struct lock_class_key request_key;



	return gpiochip_irqchip_add_key(gpiochip, irqchip, first_irq,

	return gpiochip_irqchip_add_key(gc, irqchip, first_irq,

					handler, type, true,

					&lock_key, &request_key);

}

#else /* ! CONFIG_LOCKDEP */

static inline int gpiochip_irqchip_add(struct gpio_chip *gpiochip,

static inline int gpiochip_irqchip_add(struct gpio_chip *gc,

				       struct irq_chip *irqchip,

				       unsigned int first_irq,

				       irq_flow_handler_t handler,

				       unsigned int type)

{

	return gpiochip_irqchip_add_key(gpiochip, irqchip, first_irq,

	return gpiochip_irqchip_add_key(gc, irqchip, first_irq,

					handler, type, false, NULL, NULL);

}



static inline int gpiochip_irqchip_add_nested(struct gpio_chip *gpiochip,

static inline int gpiochip_irqchip_add_nested(struct gpio_chip *gc,

			  struct irq_chip *irqchip,

			  unsigned int first_irq,

			  irq_flow_handler_t handler,

			  unsigned int type)

{

	return gpiochip_irqchip_add_key(gpiochip, irqchip, first_irq,

	return gpiochip_irqchip_add_key(gc, irqchip, first_irq,

					handler, type, true, NULL, NULL);

}

#endif /* CONFIG_LOCKDEP */



int gpiochip_generic_request(struct gpio_chip *chip, unsigned offset);

void gpiochip_generic_free(struct gpio_chip *chip, unsigned offset);

int gpiochip_generic_config(struct gpio_chip *chip, unsigned offset,

int gpiochip_generic_request(struct gpio_chip *gc, unsigned offset);

void gpiochip_generic_free(struct gpio_chip *gc, unsigned offset);

int gpiochip_generic_config(struct gpio_chip *gc, unsigned offset,

			    unsigned long config);



/**
@@ -676,25 +676,25 @@ struct gpio_pin_range { 


#ifdef CONFIG_PINCTRL



int gpiochip_add_pin_range(struct gpio_chip *chip, const char *pinctl_name,

int gpiochip_add_pin_range(struct gpio_chip *gc, const char *pinctl_name,

			   unsigned int gpio_offset, unsigned int pin_offset,

			   unsigned int npins);

int gpiochip_add_pingroup_range(struct gpio_chip *chip,

int gpiochip_add_pingroup_range(struct gpio_chip *gc,

			struct pinctrl_dev *pctldev,

			unsigned int gpio_offset, const char *pin_group);

void gpiochip_remove_pin_ranges(struct gpio_chip *chip);

void gpiochip_remove_pin_ranges(struct gpio_chip *gc);



#else /* ! CONFIG_PINCTRL */



static inline int

gpiochip_add_pin_range(struct gpio_chip *chip, const char *pinctl_name,

gpiochip_add_pin_range(struct gpio_chip *gc, const char *pinctl_name,

		       unsigned int gpio_offset, unsigned int pin_offset,

		       unsigned int npins)

{

	return 0;

}

static inline int

gpiochip_add_pingroup_range(struct gpio_chip *chip,

gpiochip_add_pingroup_range(struct gpio_chip *gc,

			struct pinctrl_dev *pctldev,

			unsigned int gpio_offset, const char *pin_group)

{
@@ -702,27 +702,27 @@ gpiochip_add_pingroup_range(struct gpio_chip *chip, 
}



static inline void

gpiochip_remove_pin_ranges(struct gpio_chip *chip)

gpiochip_remove_pin_ranges(struct gpio_chip *gc)

{

}



#endif /* CONFIG_PINCTRL */



struct gpio_desc *gpiochip_request_own_desc(struct gpio_chip *chip,

struct gpio_desc *gpiochip_request_own_desc(struct gpio_chip *gc,

					    unsigned int hwnum,

					    const char *label,

					    enum gpio_lookup_flags lflags,

					    enum gpiod_flags dflags);

void gpiochip_free_own_desc(struct gpio_desc *desc);



void devprop_gpiochip_set_names(struct gpio_chip *chip,

void devprop_gpiochip_set_names(struct gpio_chip *gc,

				const struct fwnode_handle *fwnode);



#ifdef CONFIG_GPIOLIB



/* lock/unlock as IRQ */

int gpiochip_lock_as_irq(struct gpio_chip *chip, unsigned int offset);

void gpiochip_unlock_as_irq(struct gpio_chip *chip, unsigned int offset);

int gpiochip_lock_as_irq(struct gpio_chip *gc, unsigned int offset);

void gpiochip_unlock_as_irq(struct gpio_chip *gc, unsigned int offset);





struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc);
@@ -736,14 +736,14 @@ static inline struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc) 
	return ERR_PTR(-ENODEV);

}



static inline int gpiochip_lock_as_irq(struct gpio_chip *chip,

static inline int gpiochip_lock_as_irq(struct gpio_chip *gc,

				       unsigned int offset)

{

	WARN_ON(1);

	return -EINVAL;

}



static inline void gpiochip_unlock_as_irq(struct gpio_chip *chip,

static inline void gpiochip_unlock_as_irq(struct gpio_chip *gc,

					  unsigned int offset)

{

	WARN_ON(1);

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