From 099d03f02dbffe1575d86063b2bf416502faa5e9 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Mon, 29 Jul 2019 16:35:05 +0300 Subject: 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 Tested-by: Sedat Dilek Signed-off-by: David S. Miller --- drivers/nfc/nxp-nci/i2c.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) (limited to 'drivers/nfc/nxp-nci/i2c.c') diff --git a/drivers/nfc/nxp-nci/i2c.c b/drivers/nfc/nxp-nci/i2c.c index 713c267acf88..7344405feddf 100644 --- a/drivers/nfc/nxp-nci/i2c.c +++ b/drivers/nfc/nxp-nci/i2c.c @@ -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"); -- cgit v1.2.3-59-g8ed1b