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NFC: pn544: Get rid of code duplication in ->probe() 

Since OF and ACPI case almost the same get rid of code duplication
by moving gpiod_get() calls directly to ->probe().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Andy Shevchenko 2017-03-28 12:36:39 +03:00 committed by Samuel Ortiz
parent a4a0eb783b
commit 95129b6f08
1 changed files with 17 additions and 67 deletions
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84
drivers/nfc/pn544/i2c.c
View File

@ -878,58 +878,10 @@ static const struct acpi_gpio_mapping acpi_pn544_gpios[] = {
{ },
};
static int pn544_hci_i2c_acpi_request_resources(struct i2c_client *client)
{
struct pn544_i2c_phy *phy = i2c_get_clientdata(client);
struct device *dev = &client->dev;
int ret;
ret = acpi_dev_add_driver_gpios(ACPI_COMPANION(dev), acpi_pn544_gpios);
if (ret)
return ret;
/* Get EN GPIO from ACPI */
phy->gpiod_en = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);
if (IS_ERR(phy->gpiod_en)) {
nfc_err(dev, "Unable to get EN GPIO\n");
return PTR_ERR(phy->gpiod_en);
}
/* Get FW GPIO from ACPI */
phy->gpiod_fw = devm_gpiod_get(dev, "firmware", GPIOD_OUT_LOW);
if (IS_ERR(phy->gpiod_fw)) {
nfc_err(dev, "Unable to get FW GPIO\n");
return PTR_ERR(phy->gpiod_fw);
}
return 0;
}
static int pn544_hci_i2c_of_request_resources(struct i2c_client *client)
{
struct pn544_i2c_phy *phy = i2c_get_clientdata(client);
struct device *dev = &client->dev;
/* Obtaining EN GPIO from device tree */
phy->gpiod_en = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);
if (IS_ERR(phy->gpiod_en)) {
nfc_err(dev, "Failed to get EN gpio\n");
return PTR_ERR(phy->gpiod_en);
}
/* Obtaining FW GPIO from device tree */
phy->gpiod_fw = devm_gpiod_get(dev, "firmware", GPIOD_OUT_LOW);
if (IS_ERR(phy->gpiod_fw)) {
nfc_err(dev, "Failed to get FW gpio\n");
return PTR_ERR(phy->gpiod_fw);
}
return 0;
}
static int pn544_hci_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct device *dev = &client->dev;
struct pn544_i2c_phy *phy;
int r = 0;
@ -952,24 +904,22 @@ static int pn544_hci_i2c_probe(struct i2c_client *client,
phy->i2c_dev = client;
i2c_set_clientdata(client, phy);
/* No platform data, using device tree. */
if (client->dev.of_node) {
r = pn544_hci_i2c_of_request_resources(client);
if (r) {
nfc_err(&client->dev, "No DT data\n");
return r;
}
/* Using ACPI */
} else if (ACPI_HANDLE(&client->dev)) {
r = pn544_hci_i2c_acpi_request_resources(client);
if (r) {
nfc_err(&client->dev,
"Cannot get ACPI data\n");
return r;
}
} else {
nfc_err(&client->dev, "No platform data\n");
return -EINVAL;
r = acpi_dev_add_driver_gpios(ACPI_COMPANION(dev), acpi_pn544_gpios);
if (r)
dev_dbg(dev, "Unable to add GPIO mapping table\n");
/* Get EN GPIO */
phy->gpiod_en = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);
if (IS_ERR(phy->gpiod_en)) {
nfc_err(dev, "Unable to get EN GPIO\n");
return PTR_ERR(phy->gpiod_en);
}
/* Get FW GPIO */
phy->gpiod_fw = devm_gpiod_get(dev, "firmware", GPIOD_OUT_LOW);
if (IS_ERR(phy->gpiod_fw)) {
nfc_err(dev, "Unable to get FW GPIO\n");
return PTR_ERR(phy->gpiod_fw);
}
pn544_hci_i2c_platform_init(phy);