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 09/12] NFC: st-nci: Covert to use GPIO descriptor
Date: Mon, 5 Jun 2017 23:20:06 +0300 [thread overview]
Message-ID: <20170605202009.78561-10-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <20170605202009.78561-1-andriy.shevchenko@linux.intel.com>
Since we got rid of platform data, the driver may use GPIO descriptor
directly.
Looking deeply to the use of the GPIO pin it looks like it should be
a GPIO based reset control rather than custom GPIO handling. But this
is out of scope of the change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/nfc/st-nci/i2c.c | 38 +++++++++++---------------------------
drivers/nfc/st-nci/spi.c | 40 ++++++++++++----------------------------
2 files changed, 23 insertions(+), 55 deletions(-)
diff --git a/drivers/nfc/st-nci/i2c.c b/drivers/nfc/st-nci/i2c.c
index bdfbd543e671..cc63c2f6823f 100644
--- a/drivers/nfc/st-nci/i2c.c
+++ b/drivers/nfc/st-nci/i2c.c
@@ -19,13 +19,12 @@
#include <linux/module.h>
#include <linux/i2c.h>
-#include <linux/gpio.h>
#include <linux/gpio/consumer.h>
-#include <linux/of_gpio.h>
#include <linux/acpi.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/nfc.h>
+#include <linux/of.h>
#include "st-nci.h"
@@ -49,7 +48,7 @@ struct st_nci_i2c_phy {
bool irq_active;
- unsigned int gpio_reset;
+ struct gpio_desc *gpiod_reset;
struct st_nci_se_status se_status;
};
@@ -58,9 +57,9 @@ static int st_nci_i2c_enable(void *phy_id)
{
struct st_nci_i2c_phy *phy = phy_id;
- gpio_set_value(phy->gpio_reset, 0);
+ gpiod_set_value(phy->gpiod_reset, 0);
usleep_range(10000, 15000);
- gpio_set_value(phy->gpio_reset, 1);
+ gpiod_set_value(phy->gpiod_reset, 1);
usleep_range(80000, 85000);
if (phy->ndlc->powered == 0 && phy->irq_active == 0) {
@@ -209,20 +208,16 @@ static struct nfc_phy_ops i2c_phy_ops = {
static int st_nci_i2c_acpi_request_resources(struct i2c_client *client)
{
struct st_nci_i2c_phy *phy = i2c_get_clientdata(client);
- struct gpio_desc *gpiod_reset;
struct device *dev = &client->dev;
u8 tmp;
/* Get RESET GPIO from ACPI */
- gpiod_reset = devm_gpiod_get_index(dev, ST_NCI_GPIO_NAME_RESET, 1,
- GPIOD_OUT_HIGH);
- if (IS_ERR(gpiod_reset)) {
+ phy->gpiod_reset = devm_gpiod_get_index(dev, ST_NCI_GPIO_NAME_RESET, 1, GPIOD_OUT_HIGH);
+ if (IS_ERR(phy->gpiod_reset)) {
nfc_err(dev, "Unable to get RESET GPIO\n");
return -ENODEV;
}
- phy->gpio_reset = desc_to_gpio(gpiod_reset);
-
phy->se_status.is_ese_present = false;
phy->se_status.is_uicc_present = false;
@@ -242,30 +237,19 @@ static int st_nci_i2c_acpi_request_resources(struct i2c_client *client)
static int st_nci_i2c_of_request_resources(struct i2c_client *client)
{
struct st_nci_i2c_phy *phy = i2c_get_clientdata(client);
+ struct device *dev = &client->dev;
struct device_node *pp;
- int gpio;
- int r;
pp = client->dev.of_node;
if (!pp)
return -ENODEV;
/* Get GPIO from device tree */
- gpio = of_get_named_gpio(pp, "reset-gpios", 0);
- if (gpio < 0) {
- nfc_err(&client->dev,
- "Failed to retrieve reset-gpios from device tree\n");
- return gpio;
- }
-
- /* GPIO request and configuration */
- r = devm_gpio_request_one(&client->dev, gpio,
- GPIOF_OUT_INIT_HIGH, ST_NCI_GPIO_NAME_RESET);
- if (r) {
- nfc_err(&client->dev, "Failed to request reset pin\n");
- return r;
+ 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);
}
- phy->gpio_reset = gpio;
phy->se_status.is_ese_present =
of_property_read_bool(pp, "ese-present");
diff --git a/drivers/nfc/st-nci/spi.c b/drivers/nfc/st-nci/spi.c
index 4585e205778b..acf339d83360 100644
--- a/drivers/nfc/st-nci/spi.c
+++ b/drivers/nfc/st-nci/spi.c
@@ -19,13 +19,12 @@
#include <linux/module.h>
#include <linux/spi/spi.h>
-#include <linux/gpio.h>
#include <linux/gpio/consumer.h>
-#include <linux/of_gpio.h>
#include <linux/acpi.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/nfc.h>
+#include <linux/of.h>
#include <net/nfc/nci.h>
#include "st-nci.h"
@@ -50,7 +49,7 @@ struct st_nci_spi_phy {
bool irq_active;
- unsigned int gpio_reset;
+ struct gpio_desc *gpiod_reset;
struct st_nci_se_status se_status;
};
@@ -59,9 +58,9 @@ static int st_nci_spi_enable(void *phy_id)
{
struct st_nci_spi_phy *phy = phy_id;
- gpio_set_value(phy->gpio_reset, 0);
+ gpiod_set_value(phy->gpiod_reset, 0);
usleep_range(10000, 15000);
- gpio_set_value(phy->gpio_reset, 1);
+ gpiod_set_value(phy->gpiod_reset, 1);
usleep_range(80000, 85000);
if (phy->ndlc->powered == 0 && phy->irq_active == 0) {
@@ -224,20 +223,16 @@ static struct nfc_phy_ops spi_phy_ops = {
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 gpio_desc *gpiod_reset;
struct device *dev = &spi_dev->dev;
u8 tmp;
/* Get RESET GPIO from ACPI */
- gpiod_reset = devm_gpiod_get_index(dev, ST_NCI_GPIO_NAME_RESET, 1,
- GPIOD_OUT_HIGH);
- if (IS_ERR(gpiod_reset)) {
+ phy->gpiod_reset = devm_gpiod_get_index(dev, ST_NCI_GPIO_NAME_RESET, 1, GPIOD_OUT_HIGH);
+ if (IS_ERR(phy->gpiod_reset)) {
nfc_err(dev, "Unable to get RESET GPIO\n");
- return -ENODEV;
+ return PTR_ERR(phy->gpiod_reset);
}
- phy->gpio_reset = desc_to_gpio(gpiod_reset);
-
phy->se_status.is_ese_present = false;
phy->se_status.is_uicc_present = false;
@@ -257,30 +252,19 @@ static int st_nci_spi_acpi_request_resources(struct spi_device *spi_dev)
static int st_nci_spi_of_request_resources(struct spi_device *dev)
{
struct st_nci_spi_phy *phy = spi_get_drvdata(dev);
+ struct device *dev = &dev->dev;
struct device_node *pp;
- int gpio;
- int r;
pp = dev->dev.of_node;
if (!pp)
return -ENODEV;
/* Get GPIO from device tree */
- gpio = of_get_named_gpio(pp, "reset-gpios", 0);
- if (gpio < 0) {
- nfc_err(&dev->dev,
- "Failed to retrieve reset-gpios from device tree\n");
- return gpio;
- }
-
- /* GPIO request and configuration */
- r = devm_gpio_request_one(&dev->dev, gpio,
- GPIOF_OUT_INIT_HIGH, ST_NCI_GPIO_NAME_RESET);
- if (r) {
- nfc_err(&dev->dev, "Failed to request reset pin\n");
- return r;
+ 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);
}
- phy->gpio_reset = gpio;
phy->se_status.is_ese_present =
of_property_read_bool(pp, "ese-present");
--
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 ` Andy Shevchenko [this message]
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 ` [PATCH v2 11/12] NFC: st-nci: Add GPIO ACPI mapping table Andy Shevchenko
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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