From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Samuel Ortiz <sameo@linux.intel.com>, linux-wireless@vger.kernel.org
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: [PATCH v2 11/12] NFC: st-nci: Add GPIO ACPI mapping table
Date: Mon, 5 Jun 2017 23:20:08 +0300 [thread overview]
Message-ID: <20170605202009.78561-12-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <20170605202009.78561-1-andriy.shevchenko@linux.intel.com>
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>
---
drivers/nfc/st-nci/i2c.c | 16 +++++++++++++---
drivers/nfc/st-nci/spi.c | 16 +++++++++++++---
2 files changed, 26 insertions(+), 6 deletions(-)
diff --git a/drivers/nfc/st-nci/i2c.c b/drivers/nfc/st-nci/i2c.c
index 157e99992eae..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;
@@ -205,13 +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;
diff --git a/drivers/nfc/st-nci/spi.c b/drivers/nfc/st-nci/spi.c
index d21259cf42c0..80afdb9ea248 100644
--- a/drivers/nfc/st-nci/spi.c
+++ b/drivers/nfc/st-nci/spi.c
@@ -41,8 +41,6 @@
#define ST_NCI_DRIVER_NAME "st_nci"
#define ST_NCI_SPI_DRIVER_NAME "st_nci_spi"
-#define ST_NCI_GPIO_NAME_RESET "reset"
-
struct st_nci_spi_phy {
struct spi_device *spi_dev;
struct llt_ndlc *ndlc;
@@ -220,13 +218,25 @@ static struct nfc_phy_ops spi_phy_ops = {
.disable = st_nci_spi_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_spi_acpi_request_resources(struct spi_device *spi_dev)
{
struct st_nci_spi_phy *phy = spi_get_drvdata(spi_dev);
struct device *dev = &spi_dev->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 PTR_ERR(phy->gpiod_reset);
--
2.11.0
next prev parent reply other threads:[~2017-06-05 20:21 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-05 20:19 [PATCH v2 00/12] NFC: clean up for ACPI GPIO usage Andy Shevchenko
2017-06-05 20:19 ` [PATCH v2 01/12] NFC: pn544: Switch to devm_acpi_dev_add_driver_gpios() Andy Shevchenko
2017-06-05 20:19 ` [PATCH v2 02/12] NFC: st21nfca: Add GPIO ACPI mapping table Andy Shevchenko
2017-06-05 20:20 ` [PATCH v2 03/12] NFC: st21nfca: Get rid of code duplication in ->probe() Andy Shevchenko
2017-06-05 20:20 ` [PATCH v2 04/12] NFC: fdp: Convert I2C driver to ->probe_new() Andy Shevchenko
2017-06-05 20:20 ` [PATCH v2 05/12] NFC: fdp: Convert to use devres API Andy Shevchenko
2017-06-05 20:20 ` [PATCH v2 06/12] NFC: fdp: Add GPIO ACPI mapping table Andy Shevchenko
2017-06-05 20:20 ` [PATCH v2 07/12] NFC: st-nci: Get rid of platform data Andy Shevchenko
2017-06-05 20:20 ` [PATCH v2 08/12] NFC: st-nci: Get rid of "interesting" use of interrupt polarity Andy Shevchenko
2017-06-05 20:20 ` [PATCH v2 09/12] NFC: st-nci: Covert to use GPIO descriptor Andy Shevchenko
2017-06-05 20:20 ` [PATCH v2 10/12] NFC: st-nci: Use unified device property API meaningfully Andy Shevchenko
2017-06-05 20:20 ` Andy Shevchenko [this message]
2017-06-05 20:20 ` [PATCH v2 12/12] NFC: st-nci: Get rid of code duplication in ->probe() Andy Shevchenko
2017-06-12 15:36 ` [PATCH v2 00/12] NFC: clean up for ACPI GPIO usage Andy Shevchenko
2017-06-12 20:56 ` Samuel Ortiz
2017-06-13 8:41 ` Andy Shevchenko
2017-06-18 23:11 ` Samuel Ortiz
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