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gpio: Rename variable in core APIs

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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: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20200329140405.52276-1-linus.walleij@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2020-03-29 16:04:05 +02:00
parent 89ad556b7f
commit a0b66a7378
2 changed files with 482 additions and 481 deletions
drivers/gpio
gpiolib.c
include/linux/gpio
driver.h

825
drivers/gpio/gpiolib.c
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File diff suppressed because it is too large Load Diff

138
include/linux/gpio/driver.h
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@ -87,7 +87,7 @@ struct gpio_irq_chip {
* @need_valid_mask to make these GPIO lines unavailable for * @need_valid_mask to make these GPIO lines unavailable for
* translation. * 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_hwirq,
unsigned int child_type, unsigned int child_type,
unsigned int *parent_hwirq, unsigned int *parent_hwirq,
@ -102,7 +102,7 @@ struct gpio_irq_chip {
* variant named &gpiochip_populate_parent_fwspec_fourcell is also * variant named &gpiochip_populate_parent_fwspec_fourcell is also
* available. * 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_hwirq,
unsigned int parent_type); unsigned int parent_type);
@ -114,7 +114,7 @@ struct gpio_irq_chip {
* callback. If this is not specified, then a default callback will be * callback. If this is not specified, then a default callback will be
* provided that returns the line offset. * 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); unsigned int pin);
/** /**
@ -209,7 +209,7 @@ struct gpio_irq_chip {
* a particular driver wants to clear IRQ related registers * a particular driver wants to clear IRQ related registers
* in order to avoid undesired events. * 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 * @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 * then directly set some bits to "0" if they cannot be used for
* interrupts. * interrupts.
*/ */
void (*init_valid_mask)(struct gpio_chip *chip, void (*init_valid_mask)(struct gpio_chip *gc,
unsigned long *valid_mask, unsigned long *valid_mask,
unsigned int ngpios); unsigned int ngpios);
@ -348,40 +348,40 @@ struct gpio_chip {
struct device *parent; struct device *parent;
struct module *owner; struct module *owner;
int (*request)(struct gpio_chip *chip, int (*request)(struct gpio_chip *gc,
unsigned offset); unsigned offset);
void (*free)(struct gpio_chip *chip, void (*free)(struct gpio_chip *gc,
unsigned offset); unsigned offset);
int (*get_direction)(struct gpio_chip *chip, int (*get_direction)(struct gpio_chip *gc,
unsigned offset); unsigned offset);
int (*direction_input)(struct gpio_chip *chip, int (*direction_input)(struct gpio_chip *gc,
unsigned offset); unsigned offset);
int (*direction_output)(struct gpio_chip *chip, int (*direction_output)(struct gpio_chip *gc,
unsigned offset, int value); unsigned offset, int value);
int (*get)(struct gpio_chip *chip, int (*get)(struct gpio_chip *gc,
unsigned offset); unsigned offset);
int (*get_multiple)(struct gpio_chip *chip, int (*get_multiple)(struct gpio_chip *gc,
unsigned long *mask, unsigned long *mask,
unsigned long *bits); unsigned long *bits);
void (*set)(struct gpio_chip *chip, void (*set)(struct gpio_chip *gc,
unsigned offset, int value); unsigned offset, int value);
void (*set_multiple)(struct gpio_chip *chip, void (*set_multiple)(struct gpio_chip *gc,
unsigned long *mask, unsigned long *mask,
unsigned long *bits); unsigned long *bits);
int (*set_config)(struct gpio_chip *chip, int (*set_config)(struct gpio_chip *gc,
unsigned offset, unsigned offset,
unsigned long config); unsigned long config);
int (*to_irq)(struct gpio_chip *chip, int (*to_irq)(struct gpio_chip *gc,
unsigned offset); unsigned offset);
void (*dbg_show)(struct seq_file *s, 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 long *valid_mask,
unsigned int ngpios); unsigned int ngpios);
int (*add_pin_ranges)(struct gpio_chip *chip); int (*add_pin_ranges)(struct gpio_chip *gc);
int base; int base;
u16 ngpio; u16 ngpio;
@ -458,11 +458,11 @@ struct gpio_chip {
#endif /* CONFIG_OF_GPIO */ #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); unsigned offset);
/* add/remove chips */ /* 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 *lock_key,
struct lock_class_key *request_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. * Otherwise it returns zero as a success code.
*/ */
#ifdef CONFIG_LOCKDEP #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 lock_key; \
static struct lock_class_key request_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); \ &request_key); \
}) })
#else #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 */ #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 void gpiochip_remove(struct gpio_chip *gc);
extern int devm_gpiochip_add_data(struct device *dev, struct gpio_chip *chip, extern int devm_gpiochip_add_data(struct device *dev, struct gpio_chip *gc,
void *data); void *data);
extern struct gpio_chip *gpiochip_find(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); bool gpiochip_line_is_irq(struct gpio_chip *gc, unsigned int offset);
int gpiochip_reqres_irq(struct gpio_chip *chip, unsigned int offset); int gpiochip_reqres_irq(struct gpio_chip *gc, unsigned int offset);
void gpiochip_relres_irq(struct gpio_chip *chip, unsigned int offset); void gpiochip_relres_irq(struct gpio_chip *gc, unsigned int offset);
void gpiochip_disable_irq(struct gpio_chip *chip, unsigned int offset); void gpiochip_disable_irq(struct gpio_chip *gc, unsigned int offset);
void gpiochip_enable_irq(struct gpio_chip *chip, unsigned int offset); void gpiochip_enable_irq(struct gpio_chip *gc, unsigned int offset);
/* Line status inquiry for drivers */ /* Line status inquiry for drivers */
bool gpiochip_line_is_open_drain(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 *chip, unsigned int offset); bool gpiochip_line_is_open_source(struct gpio_chip *gc, unsigned int offset);
/* Sleep persistence inquiry for drivers */ /* Sleep persistence inquiry for drivers */
bool gpiochip_line_is_persistent(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 *chip, unsigned int offset); bool gpiochip_line_is_valid(const struct gpio_chip *gc, unsigned int offset);
/* get driver data */ /* get driver data */
void *gpiochip_get_data(struct gpio_chip *chip); void *gpiochip_get_data(struct gpio_chip *gc);
struct bgpio_pdata { struct bgpio_pdata {
const char *label; const char *label;
@ -536,23 +536,23 @@ struct bgpio_pdata {
#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY #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_hwirq,
unsigned int parent_type); 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_hwirq,
unsigned int parent_type); unsigned int parent_type);
#else #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_hwirq,
unsigned int parent_type) unsigned int parent_type)
{ {
return NULL; 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_hwirq,
unsigned int parent_type) 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, void gpiochip_irq_domain_deactivate(struct irq_domain *domain,
struct irq_data *data); 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, struct irq_chip *irqchip,
unsigned int parent_irq); 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, struct irq_chip *irqchip,
unsigned int first_irq, unsigned int first_irq,
irq_flow_handler_t handler, 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 *lock_key,
struct lock_class_key *request_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); unsigned int offset);
#ifdef CONFIG_LOCKDEP #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 * boilerplate static inlines provides such a key for each
* unique instance. * 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, struct irq_chip *irqchip,
unsigned int first_irq, unsigned int first_irq,
irq_flow_handler_t handler, 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 lock_key;
static struct lock_class_key request_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, handler, type, false,
&lock_key, &request_key); &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, struct irq_chip *irqchip,
unsigned int first_irq, unsigned int first_irq,
irq_flow_handler_t handler, 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 lock_key;
static struct lock_class_key request_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, handler, type, true,
&lock_key, &request_key); &lock_key, &request_key);
} }
#else /* ! CONFIG_LOCKDEP */ #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, struct irq_chip *irqchip,
unsigned int first_irq, unsigned int first_irq,
irq_flow_handler_t handler, irq_flow_handler_t handler,
unsigned int type) 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); 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, struct irq_chip *irqchip,
unsigned int first_irq, unsigned int first_irq,
irq_flow_handler_t handler, irq_flow_handler_t handler,
unsigned int type) 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); handler, type, true, NULL, NULL);
} }
#endif /* CONFIG_LOCKDEP */ #endif /* CONFIG_LOCKDEP */
int gpiochip_generic_request(struct gpio_chip *chip, unsigned offset); int gpiochip_generic_request(struct gpio_chip *gc, unsigned offset);
void gpiochip_generic_free(struct gpio_chip *chip, unsigned offset); void gpiochip_generic_free(struct gpio_chip *gc, unsigned offset);
int gpiochip_generic_config(struct gpio_chip *chip, unsigned offset, int gpiochip_generic_config(struct gpio_chip *gc, unsigned offset,
unsigned long config); unsigned long config);
/** /**
@ -676,25 +676,25 @@ struct gpio_pin_range {
#ifdef CONFIG_PINCTRL #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 gpio_offset, unsigned int pin_offset,
unsigned int npins); 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, struct pinctrl_dev *pctldev,
unsigned int gpio_offset, const char *pin_group); 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 */ #else /* ! CONFIG_PINCTRL */
static inline int 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 gpio_offset, unsigned int pin_offset,
unsigned int npins) unsigned int npins)
{ {
return 0; return 0;
} }
static inline int static inline int
gpiochip_add_pingroup_range(struct gpio_chip *chip, gpiochip_add_pingroup_range(struct gpio_chip *gc,
struct pinctrl_dev *pctldev, struct pinctrl_dev *pctldev,
unsigned int gpio_offset, const char *pin_group) unsigned int gpio_offset, const char *pin_group)
{ {
@ -702,27 +702,27 @@ gpiochip_add_pingroup_range(struct gpio_chip *chip,
} }
static inline void static inline void
gpiochip_remove_pin_ranges(struct gpio_chip *chip) gpiochip_remove_pin_ranges(struct gpio_chip *gc)
{ {
} }
#endif /* CONFIG_PINCTRL */ #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, unsigned int hwnum,
const char *label, const char *label,
enum gpio_lookup_flags lflags, enum gpio_lookup_flags lflags,
enum gpiod_flags dflags); enum gpiod_flags dflags);
void gpiochip_free_own_desc(struct gpio_desc *desc); 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); const struct fwnode_handle *fwnode);
#ifdef CONFIG_GPIOLIB #ifdef CONFIG_GPIOLIB
/* lock/unlock as IRQ */ /* lock/unlock as IRQ */
int gpiochip_lock_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 *chip, 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); 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); 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) unsigned int offset)
{ {
WARN_ON(1); WARN_ON(1);
return -EINVAL; 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) unsigned int offset)
{ {
WARN_ON(1); WARN_ON(1);