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misc: eeprom_93xx46: Simplify the usage of gpiod API

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Commit 3ca9b1ac28 ("misc: eeprom_93xx46: Add support for a GPIO
'select' line.") introduced the optional usage of 'select-gpios'
by using the gpiod API in a convoluted way.

Rewrite the gpiod handling to make the code simpler.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Fabio Estevam 2017-07-19 23:35:28 -03:00 committed by Greg Kroah-Hartman
parent 75e5bae6dd
commit 54ec602370
1 changed files with 7 additions and 17 deletions
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24
drivers/misc/eeprom/eeprom_93xx46.c
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@ -377,8 +377,6 @@ static int eeprom_93xx46_probe_dt(struct spi_device *spi)
struct device_node *np = spi->dev.of_node;
struct eeprom_93xx46_platform_data *pd;
u32 tmp;
int gpio;
enum of_gpio_flags of_flags;
int ret;
pd = devm_kzalloc(&spi->dev, sizeof(*pd), GFP_KERNEL);
@ -403,22 +401,14 @@ static int eeprom_93xx46_probe_dt(struct spi_device *spi)
if (of_property_read_bool(np, "read-only"))
pd->flags |= EE_READONLY;
gpio = of_get_named_gpio_flags(np, "select-gpios", 0, &of_flags);
if (gpio_is_valid(gpio)) {
unsigned long flags =
of_flags == OF_GPIO_ACTIVE_LOW ? GPIOF_ACTIVE_LOW : 0;
pd->select = devm_gpiod_get_optional(&spi->dev, "select",
GPIOD_OUT_LOW);
if (IS_ERR(pd->select))
return PTR_ERR(pd->select);
ret = devm_gpio_request_one(&spi->dev, gpio, flags,
"eeprom_93xx46_select");
if (ret)
return ret;
pd->select = gpio_to_desc(gpio);
pd->prepare = select_assert;
pd->finish = select_deassert;
gpiod_direction_output(pd->select, 0);
}
pd->prepare = select_assert;
pd->finish = select_deassert;
gpiod_direction_output(pd->select, 0);
if (of_id->data) {
const struct eeprom_93xx46_devtype_data *data = of_id->data;