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NFC: pn544: use flags argument of devm_gpiod_get to set direction 

Since 39b2bbe3d7 (gpio: add flags argument to gpiod_get*()
functions) which appeared in v3.17-rc1, the gpiod_get* functions
take an additional parameter that allows to specify direction and
initial value for output.

Use this to simplify the driver. Furthermore this is one caller less
that stops us making the flags argument to gpiod_get*() mandatory.

While touching this also do some minor coding style fixes.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Uwe Kleine-König 2015-05-19 09:22:56 +02:00 committed by Samuel Ortiz
parent 0cd6f66739
commit 8a2151c587
1 changed files with 11 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
drivers/nfc/pn544/i2c.c
View File

@ -895,56 +895,35 @@ static int pn544_hci_i2c_acpi_request_resources(struct i2c_client *client)
return -ENODEV;
/* Get EN GPIO from ACPI */
gpiod_en = devm_gpiod_get_index(dev, PN544_GPIO_NAME_EN, 1);
gpiod_en = devm_gpiod_get_index(dev, PN544_GPIO_NAME_EN, 1,
GPIOD_OUT_LOW);
if (IS_ERR(gpiod_en)) {
nfc_err(dev,
"Unable to get EN GPIO\n");
nfc_err(dev, "Unable to get EN GPIO\n");
return -ENODEV;
}
phy->gpio_en = desc_to_gpio(gpiod_en);
/* Configuration EN GPIO */
ret = gpiod_direction_output(gpiod_en, 0);
if (ret) {
nfc_err(dev, "Fail EN pin direction\n");
return ret;
}
phy->gpio_en = desc_to_gpio(gpiod_en);
/* Get FW GPIO from ACPI */
gpiod_fw = devm_gpiod_get_index(dev, PN544_GPIO_NAME_FW, 2);
gpiod_fw = devm_gpiod_get_index(dev, PN544_GPIO_NAME_FW, 2,
GPIOD_OUT_LOW);
if (IS_ERR(gpiod_fw)) {
nfc_err(dev,
"Unable to get FW GPIO\n");
nfc_err(dev, "Unable to get FW GPIO\n");
return -ENODEV;
}
phy->gpio_fw = desc_to_gpio(gpiod_fw);
/* Configuration FW GPIO */
ret = gpiod_direction_output(gpiod_fw, 0);
if (ret) {
nfc_err(dev, "Fail FW pin direction\n");
return ret;
}
phy->gpio_fw = desc_to_gpio(gpiod_fw);
/* Get IRQ GPIO */
gpiod_irq = devm_gpiod_get_index(dev, PN544_GPIO_NAME_IRQ, 0);
gpiod_irq = devm_gpiod_get_index(dev, PN544_GPIO_NAME_IRQ, 0,
GPIOD_IN);
if (IS_ERR(gpiod_irq)) {
nfc_err(dev,
"Unable to get IRQ GPIO\n");
nfc_err(dev, "Unable to get IRQ GPIO\n");
return -ENODEV;
}
phy->gpio_irq = desc_to_gpio(gpiod_irq);
/* Configure IRQ GPIO */
ret = gpiod_direction_input(gpiod_irq);
if (ret) {
nfc_err(dev, "Fail IRQ pin direction\n");
return ret;
}
/* Map the pin to an IRQ */
ret = gpiod_to_irq(gpiod_irq);
if (ret < 0) {