hid: cp2112: use gpiochip data pointer
This makes the driver use the data pointer added to the gpio_chip
to store a pointer to the state container instead of relying on
container_of().
Cc: linux-input@vger.kernel.org
Acked-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/hid/hid-cp2112.c b/drivers/hid/hid-cp2112.c
index f47954e..0ccdd37 100644
--- a/drivers/hid/hid-cp2112.c
+++ b/drivers/hid/hid-cp2112.c
@@ -24,7 +24,7 @@
* http://www.silabs.com/Support%20Documents/TechnicalDocs/AN495.pdf
*/
-#include <linux/gpio.h>
+#include <linux/gpio/driver.h>
#include <linux/hid.h>
#include <linux/i2c.h>
#include <linux/module.h>
@@ -169,8 +169,7 @@
static int cp2112_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
{
- struct cp2112_device *dev = container_of(chip, struct cp2112_device,
- gc);
+ struct cp2112_device *dev = gpiochip_get_data(chip);
struct hid_device *hdev = dev->hdev;
u8 buf[5];
int ret;
@@ -198,8 +197,7 @@
static void cp2112_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
{
- struct cp2112_device *dev = container_of(chip, struct cp2112_device,
- gc);
+ struct cp2112_device *dev = gpiochip_get_data(chip);
struct hid_device *hdev = dev->hdev;
u8 buf[3];
int ret;
@@ -216,8 +214,7 @@
static int cp2112_gpio_get(struct gpio_chip *chip, unsigned offset)
{
- struct cp2112_device *dev = container_of(chip, struct cp2112_device,
- gc);
+ struct cp2112_device *dev = gpiochip_get_data(chip);
struct hid_device *hdev = dev->hdev;
u8 buf[2];
int ret;
@@ -235,8 +232,7 @@
static int cp2112_gpio_direction_output(struct gpio_chip *chip,
unsigned offset, int value)
{
- struct cp2112_device *dev = container_of(chip, struct cp2112_device,
- gc);
+ struct cp2112_device *dev = gpiochip_get_data(chip);
struct hid_device *hdev = dev->hdev;
u8 buf[5];
int ret;
@@ -1106,7 +1102,7 @@
dev->gc.can_sleep = 1;
dev->gc.parent = &hdev->dev;
- ret = gpiochip_add(&dev->gc);
+ ret = gpiochip_add_data(&dev->gc, dev);
if (ret < 0) {
hid_err(hdev, "error registering gpio chip\n");
goto err_free_i2c;