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gpiolib: of: change of_find_gpio() to accept device node

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In preparation of switching all OF-based GPIO lookups to go through
of_find_gpio() let's change it to accept device node as its argument as
we do not always have access to device structure.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
This commit is contained in:
Dmitry Torokhov 2022-11-15 11:16:24 +01:00 • committed by Bartosz Golaszewski
parent 8dab99c9ea
commit 07445ae1c2
3 changed files with 8 additions and 8 deletions
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7
drivers/gpio/gpiolib-of.c
View file

@ -605,7 +605,7 @@ static const of_find_gpio_quirk of_find_gpio_quirks[] = {
NULL NULL
}; };
struct gpio_desc *of_find_gpio(struct device *dev, const char *con_id, struct gpio_desc *of_find_gpio(struct device_node *np, const char *con_id,
unsigned int idx, unsigned long *flags) unsigned int idx, unsigned long *flags)
{ {
char prop_name[32]; /* 32 is max size of property name */ char prop_name[32]; /* 32 is max size of property name */
@ -623,8 +623,7 @@ struct gpio_desc *of_find_gpio(struct device *dev, const char *con_id,
snprintf(prop_name, sizeof(prop_name), "%s", snprintf(prop_name, sizeof(prop_name), "%s",
gpio_suffixes[i]); gpio_suffixes[i]);
desc = of_get_named_gpiod_flags(dev->of_node, prop_name, idx, desc = of_get_named_gpiod_flags(np, prop_name, idx, &of_flags);
&of_flags);
if (!gpiod_not_found(desc)) if (!gpiod_not_found(desc))
break; break;
@ -632,7 +631,7 @@ struct gpio_desc *of_find_gpio(struct device *dev, const char *con_id,
/* Properly named GPIO was not found, try workarounds */ /* Properly named GPIO was not found, try workarounds */
for (q = of_find_gpio_quirks; gpiod_not_found(desc) && *q; q++) for (q = of_find_gpio_quirks; gpiod_not_found(desc) && *q; q++)
desc = (*q)(dev->of_node, con_id, idx, &of_flags); desc = (*q)(np, con_id, idx, &of_flags);
if (IS_ERR(desc)) if (IS_ERR(desc))
return desc; return desc;

4
drivers/gpio/gpiolib-of.h
View file

@ -7,7 +7,7 @@ struct gpio_chip;
enum of_gpio_flags; enum of_gpio_flags;
#ifdef CONFIG_OF_GPIO #ifdef CONFIG_OF_GPIO
struct gpio_desc *of_find_gpio(struct device *dev, struct gpio_desc *of_find_gpio(struct device_node *np,
const char *con_id, const char *con_id,
unsigned int idx, unsigned int idx,
unsigned long *lookupflags); unsigned long *lookupflags);
@ -16,7 +16,7 @@ void of_gpiochip_remove(struct gpio_chip *gc);
int of_gpio_get_count(struct device *dev, const char *con_id); int of_gpio_get_count(struct device *dev, const char *con_id);
void of_gpio_dev_init(struct gpio_chip *gc, struct gpio_device *gdev); void of_gpio_dev_init(struct gpio_chip *gc, struct gpio_device *gdev);
#else #else
static inline struct gpio_desc *of_find_gpio(struct device *dev, static inline struct gpio_desc *of_find_gpio(struct device_node *np,
const char *con_id, const char *con_id,
unsigned int idx, unsigned int idx,
unsigned long *lookupflags) unsigned long *lookupflags)

5
drivers/gpio/gpiolib.c
View file

@ -4122,14 +4122,15 @@ struct gpio_desc *__must_check gpiod_get_index(struct device *dev,
int ret; int ret;
/* Maybe we have a device name, maybe not */ /* Maybe we have a device name, maybe not */
const char *devname = dev ? dev_name(dev) : "?"; const char *devname = dev ? dev_name(dev) : "?";
const struct fwnode_handle *fwnode = dev ? dev_fwnode(dev) : NULL; struct fwnode_handle *fwnode = dev ? dev_fwnode(dev) : NULL;
dev_dbg(dev, "GPIO lookup for consumer %s\n", con_id); dev_dbg(dev, "GPIO lookup for consumer %s\n", con_id);
/* Using device tree? */ /* Using device tree? */
if (is_of_node(fwnode)) { if (is_of_node(fwnode)) {
dev_dbg(dev, "using device tree for GPIO lookup\n"); dev_dbg(dev, "using device tree for GPIO lookup\n");
desc = of_find_gpio(dev, con_id, idx, &lookupflags); desc = of_find_gpio(to_of_node(fwnode),
con_id, idx, &lookupflags);
} else if (is_acpi_node(fwnode)) { } else if (is_acpi_node(fwnode)) {
dev_dbg(dev, "using ACPI for GPIO lookup\n"); dev_dbg(dev, "using ACPI for GPIO lookup\n");
desc = acpi_find_gpio(dev, con_id, idx, &flags, &lookupflags); desc = acpi_find_gpio(dev, con_id, idx, &flags, &lookupflags);