diff options
Diffstat (limited to 'drivers/gpio/gpio-pisosr.c')
| -rw-r--r-- | drivers/gpio/gpio-pisosr.c | 27 |
1 files changed, 11 insertions, 16 deletions
diff --git a/drivers/gpio/gpio-pisosr.c b/drivers/gpio/gpio-pisosr.c index f809a5a8e9eb..81a47ae09ff8 100644 --- a/drivers/gpio/gpio-pisosr.c +++ b/drivers/gpio/gpio-pisosr.c @@ -65,7 +65,7 @@ static int pisosr_gpio_get_direction(struct gpio_chip *chip, unsigned offset) { /* This device always input */ - return 1; + return GPIO_LINE_DIRECTION_IN; } static int pisosr_gpio_direction_input(struct gpio_chip *chip, @@ -96,16 +96,16 @@ static int pisosr_gpio_get_multiple(struct gpio_chip *chip, unsigned long *mask, unsigned long *bits) { struct pisosr_gpio *gpio = gpiochip_get_data(chip); - unsigned int nbytes = DIV_ROUND_UP(chip->ngpio, 8); - unsigned int i, j; + unsigned long offset; + unsigned long gpio_mask; + unsigned long buffer_state; pisosr_gpio_refresh(gpio); bitmap_zero(bits, chip->ngpio); - for (i = 0; i < nbytes; i++) { - j = i / sizeof(unsigned long); - bits[j] |= ((unsigned long) gpio->buffer[i]) - << (8 * (i % sizeof(unsigned long))); + for_each_set_clump8(offset, gpio_mask, mask, chip->ngpio) { + buffer_state = gpio->buffer[offset / 8] & gpio_mask; + bitmap_set_value8(bits, buffer_state, offset); } return 0; @@ -148,12 +148,9 @@ static int pisosr_gpio_probe(struct spi_device *spi) return -ENOMEM; gpio->load_gpio = devm_gpiod_get_optional(dev, "load", GPIOD_OUT_LOW); - if (IS_ERR(gpio->load_gpio)) { - ret = PTR_ERR(gpio->load_gpio); - if (ret != -EPROBE_DEFER) - dev_err(dev, "Unable to allocate load GPIO\n"); - return ret; - } + if (IS_ERR(gpio->load_gpio)) + return dev_err_probe(dev, PTR_ERR(gpio->load_gpio), + "Unable to allocate load GPIO\n"); mutex_init(&gpio->lock); @@ -166,15 +163,13 @@ static int pisosr_gpio_probe(struct spi_device *spi) return 0; } -static int pisosr_gpio_remove(struct spi_device *spi) +static void pisosr_gpio_remove(struct spi_device *spi) { struct pisosr_gpio *gpio = spi_get_drvdata(spi); gpiochip_remove(&gpio->chip); mutex_destroy(&gpio->lock); - - return 0; } static const struct spi_device_id pisosr_gpio_id_table[] = { |