diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2017-06-19 13:08:56 +0300 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2017-06-23 00:51:45 +0300 |
| commit | 85d23e772931e347c145fa78db3c48f29e169838 (patch) | |
| tree | dd8a786ace38028f3217a8d6b473470d4c7a1568 /drivers/nfc/st-nci/i2c.c | |
| parent | 75719b2b7a03729f403aed55bec938c6d2784690 (diff) | |
| download | linux-85d23e772931e347c145fa78db3c48f29e169838.tar.xz | |
NFC: st-nci: Add GPIO ACPI mapping table
In order to make GPIO ACPI library stricter prepare users of
gpiod_get_index() to correctly behave when there no mapping is
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>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/nfc/st-nci/i2c.c')
| -rw-r--r-- | drivers/nfc/st-nci/i2c.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/nfc/st-nci/i2c.c b/drivers/nfc/st-nci/i2c.c index 2ee381586f14..edda253b07fe 100644 --- a/drivers/nfc/st-nci/i2c.c +++ b/drivers/nfc/st-nci/i2c.c @@ -40,8 +40,6 @@ #define ST_NCI_DRIVER_NAME "st_nci" #define ST_NCI_I2C_DRIVER_NAME "st_nci_i2c" -#define ST_NCI_GPIO_NAME_RESET "reset" - struct st_nci_i2c_phy { struct i2c_client *i2c_dev; struct llt_ndlc *ndlc; @@ -205,14 +203,25 @@ static struct nfc_phy_ops i2c_phy_ops = { .disable = st_nci_i2c_disable, }; +static const struct acpi_gpio_params reset_gpios = { 1, 0, false }; + +static const struct acpi_gpio_mapping acpi_st_nci_gpios[] = { + { "reset-gpios", &reset_gpios, 1 }, + {}, +}; + static int st_nci_i2c_acpi_request_resources(struct i2c_client *client) { struct st_nci_i2c_phy *phy = i2c_get_clientdata(client); struct device *dev = &client->dev; + int r; + + r = devm_acpi_dev_add_driver_gpios(dev, acpi_st_nci_gpios); + if (r) + return r; /* Get RESET GPIO from ACPI */ - phy->gpiod_reset = devm_gpiod_get_index(dev, ST_NCI_GPIO_NAME_RESET, - 1, GPIOD_OUT_HIGH); + phy->gpiod_reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); if (IS_ERR(phy->gpiod_reset)) { nfc_err(dev, "Unable to get RESET GPIO\n"); return -ENODEV; |