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gpiolib: Split out for_each_gpio_desc() macro

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In some cases we want to traverse all GPIO descriptors for given
chip, let's split out for_each_gpio_desc() macro for such cases.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
This commit is contained in:
Andy Shevchenko 2022-04-08 21:18:51 +03:00 committed by Bartosz Golaszewski
parent 57017edd46
commit 66f46e370a
2 changed files with 7 additions and 9 deletions
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11
drivers/gpio/gpiolib.c
View File

@ -308,15 +308,10 @@ static struct gpio_desc *gpio_name_to_desc(const char * const name)
spin_lock_irqsave(&gpio_lock, flags);
list_for_each_entry(gdev, &gpio_devices, list) {
int i;
struct gpio_desc *desc;
for (i = 0; i != gdev->ngpio; ++i) {
struct gpio_desc *desc = &gdev->descs[i];
if (!desc->name)
continue;
if (!strcmp(desc->name, name)) {
for_each_gpio_desc(gdev->chip, desc) {
if (desc->name && !strcmp(desc->name, name)) {
spin_unlock_irqrestore(&gpio_lock, flags);
return desc;
}

5
drivers/gpio/gpiolib.h
View File

@ -100,10 +100,13 @@ struct gpio_array {
struct gpio_desc *gpiochip_get_desc(struct gpio_chip *gc, unsigned int hwnum);
#define for_each_gpio_desc_with_flag(gc, desc, flag) \
#define for_each_gpio_desc(gc, desc) \
for (unsigned int __i = 0; \
__i < gc->ngpio && (desc = gpiochip_get_desc(gc, __i)); \
__i++) \
#define for_each_gpio_desc_with_flag(gc, desc, flag) \
for_each_gpio_desc(gc, desc) \
if (!test_bit(flag, &desc->flags)) {} else
int gpiod_get_array_value_complex(bool raw, bool can_sleep,