aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/nfc
diff options
context:
space:
mode:
authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2017-06-19 13:08:51 +0300
committerSamuel Ortiz <sameo@linux.intel.com>2017-06-22 23:51:44 +0200
commita5d410949ab0a8934e9352dad08ad588beae3395 (patch)
treeb4e55538901b4da26c11fbb9be881f9c1c55aa44 /drivers/nfc
parent7b9fcda91e18f13905e07f0145cc7efbe0e503dc (diff)
NFC: fdp: 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')
-rw-r--r--drivers/nfc/fdp/i2c.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/nfc/fdp/i2c.c b/drivers/nfc/fdp/i2c.c
index c955f1f5139d..c4da50e07bbc 100644
--- a/drivers/nfc/fdp/i2c.c
+++ b/drivers/nfc/fdp/i2c.c
@@ -27,7 +27,6 @@
#define FDP_I2C_DRIVER_NAME "fdp_nci_i2c"
-#define FDP_DP_POWER_GPIO_NAME "power"
#define FDP_DP_CLOCK_TYPE_NAME "clock-type"
#define FDP_DP_CLOCK_FREQ_NAME "clock-freq"
#define FDP_DP_FW_VSC_CFG_NAME "fw-vsc-cfg"
@@ -281,6 +280,13 @@ vsc_read_err:
*clock_type, *clock_freq, *fw_vsc_cfg != NULL ? "yes" : "no");
}
+static const struct acpi_gpio_params power_gpios = { 0, 0, false };
+
+static const struct acpi_gpio_mapping acpi_fdp_gpios[] = {
+ { "power-gpios", &power_gpios, 1 },
+ {},
+};
+
static int fdp_nci_i2c_probe(struct i2c_client *client)
{
struct fdp_i2c_phy *phy;
@@ -321,10 +327,12 @@ static int fdp_nci_i2c_probe(struct i2c_client *client)
return r;
}
- /* Requesting the power gpio */
- phy->power_gpio = devm_gpiod_get(dev, FDP_DP_POWER_GPIO_NAME,
- GPIOD_OUT_LOW);
+ r = devm_acpi_dev_add_driver_gpios(dev, acpi_fdp_gpios);
+ if (r)
+ dev_dbg(dev, "Unable to add GPIO mapping table\n");
+ /* Requesting the power gpio */
+ phy->power_gpio = devm_gpiod_get(dev, "power", GPIOD_OUT_LOW);
if (IS_ERR(phy->power_gpio)) {
nfc_err(dev, "Power GPIO request failed\n");
return PTR_ERR(phy->power_gpio);

Privacy Policy