diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/gpio/driver.h | 35 |
1 files changed, 21 insertions, 14 deletions
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index 2dd7cb9cc270..314f4241e306 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -550,21 +550,33 @@ DEFINE_CLASS(_gpiochip_for_each_data, const char **label, int *i) /** - * for_each_hwgpio - Iterates over all GPIOs for given chip. + * for_each_hwgpio_in_range - Iterates over all GPIOs in a given range * @_chip: Chip to iterate over. * @_i: Loop counter. + * @_base: First GPIO in the ranger. + * @_size: Amount of GPIOs to check starting from @base. * @_label: Place to store the address of the label if the GPIO is requested. * Set to NULL for unused GPIOs. */ -#define for_each_hwgpio(_chip, _i, _label) \ - for (CLASS(_gpiochip_for_each_data, _data)(&_label, &_i); \ - *_data.i < _chip->ngpio; \ - (*_data.i)++, kfree(*(_data.label)), *_data.label = NULL) \ - if (IS_ERR(*_data.label = \ - gpiochip_dup_line_label(_chip, *_data.i))) {} \ +#define for_each_hwgpio_in_range(_chip, _i, _base, _size, _label) \ + for (CLASS(_gpiochip_for_each_data, _data)(&_label, &_i); \ + *_data.i < _size; \ + (*_data.i)++, kfree(*(_data.label)), *_data.label = NULL) \ + if (IS_ERR(*_data.label = \ + gpiochip_dup_line_label(_chip, _base + *_data.i))) {} \ else /** + * for_each_hwgpio - Iterates over all GPIOs for given chip. + * @_chip: Chip to iterate over. + * @_i: Loop counter. + * @_label: Place to store the address of the label if the GPIO is requested. + * Set to NULL for unused GPIOs. + */ +#define for_each_hwgpio(_chip, _i, _label) \ + for_each_hwgpio_in_range(_chip, _i, 0, _chip->ngpio, _label) + +/** * for_each_requested_gpio_in_range - iterates over requested GPIOs in a given range * @_chip: the chip to query * @_i: loop variable @@ -573,13 +585,8 @@ DEFINE_CLASS(_gpiochip_for_each_data, * @_label: label of current GPIO */ #define for_each_requested_gpio_in_range(_chip, _i, _base, _size, _label) \ - for (CLASS(_gpiochip_for_each_data, _data)(&_label, &_i); \ - *_data.i < _size; \ - (*_data.i)++, kfree(*(_data.label)), *_data.label = NULL) \ - if ((*_data.label = \ - gpiochip_dup_line_label(_chip, _base + *_data.i)) == NULL) {} \ - else if (IS_ERR(*_data.label)) {} \ - else + for_each_hwgpio_in_range(_chip, _i, _base, _size, _label) \ + if (_label == NULL) {} else /* Iterates over all requested GPIO of the given @chip */ #define for_each_requested_gpio(chip, i, label) \ |