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NFC: nxp-nci: Add GPIO ACPI mapping table 

In order to unify GPIO resource request prepare gpiod_get_index()
to behave correctly when there is no mapping provided by firmware.

Here we add explicit mapping between _CRS GpioIo() resources and
their names used in the driver.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
alistair/sunxi64-5.4-dsi
Andy Shevchenko 2019-07-29 16:35:05 +03:00 committed by David S. Miller
parent 43201767b4
commit 099d03f02d
1 changed files with 16 additions and 2 deletions
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18
drivers/nfc/nxp-nci/i2c.c
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@ -247,6 +247,15 @@ exit_irq_none:
return IRQ_NONE;
}
static const struct acpi_gpio_params firmware_gpios = { 1, 0, false };
static const struct acpi_gpio_params enable_gpios = { 2, 0, false };
static const struct acpi_gpio_mapping acpi_nxp_nci_gpios[] = {
{ "enable-gpios", &enable_gpios, 1 },
{ "firmware-gpios", &firmware_gpios, 1 },
{ }
};
static int nxp_nci_i2c_parse_devtree(struct i2c_client *client)
{
struct nxp_nci_i2c_phy *phy = i2c_get_clientdata(client);
@ -269,9 +278,14 @@ static int nxp_nci_i2c_parse_devtree(struct i2c_client *client)
static int nxp_nci_i2c_acpi_config(struct nxp_nci_i2c_phy *phy)
{
struct i2c_client *client = phy->i2c_dev;
int r;
phy->gpiod_en = devm_gpiod_get_index(&client->dev, NULL, 2, GPIOD_OUT_LOW);
phy->gpiod_fw = devm_gpiod_get_index(&client->dev, NULL, 1, GPIOD_OUT_LOW);
r = devm_acpi_dev_add_driver_gpios(&client->dev, acpi_nxp_nci_gpios);
if (r)
return r;
phy->gpiod_en = devm_gpiod_get(&client->dev, "enable", GPIOD_OUT_LOW);
phy->gpiod_fw = devm_gpiod_get(&client->dev, "firmware", GPIOD_OUT_LOW);
if (IS_ERR(phy->gpiod_en) || IS_ERR(phy->gpiod_fw)) {
nfc_err(&client->dev, "No GPIOs\n");