pinctrl: spmi: 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: Ivan T. Ivanov <ivan.ivanov@linaro.org>
Cc: Björn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/qcom/pinctrl-spmi-gpio.c

@@ -158,11 +158,6 @@ static const char *const pmic_gpio_functions[] = {
 	PMIC_GPIO_FUNC_DTEST3, PMIC_GPIO_FUNC_DTEST4,
 };
 
-static inline struct pmic_gpio_state *to_gpio_state(struct gpio_chip *chip)
-{
-	return container_of(chip, struct pmic_gpio_state, chip);
-};
-
 static int pmic_gpio_read(struct pmic_gpio_state *state,
 			  struct pmic_gpio_pad *pad, unsigned int addr)
 {
@@ -495,7 +490,7 @@ static const struct pinconf_ops pmic_gpio_pinconf_ops = {
 
 static int pmic_gpio_direction_input(struct gpio_chip *chip, unsigned pin)
 {
-	struct pmic_gpio_state *state = to_gpio_state(chip);
+	struct pmic_gpio_state *state = gpiochip_get_data(chip);
 	unsigned long config;
 
 	config = pinconf_to_config_packed(PIN_CONFIG_INPUT_ENABLE, 1);
@@ -506,7 +501,7 @@ static int pmic_gpio_direction_input(struct gpio_chip *chip, unsigned pin)
 static int pmic_gpio_direction_output(struct gpio_chip *chip,
 				      unsigned pin, int val)
 {
-	struct pmic_gpio_state *state = to_gpio_state(chip);
+	struct pmic_gpio_state *state = gpiochip_get_data(chip);
 	unsigned long config;
 
 	config = pinconf_to_config_packed(PIN_CONFIG_OUTPUT, val);
@@ -516,7 +511,7 @@ static int pmic_gpio_direction_output(struct gpio_chip *chip,
 
 static int pmic_gpio_get(struct gpio_chip *chip, unsigned pin)
 {
-	struct pmic_gpio_state *state = to_gpio_state(chip);
+	struct pmic_gpio_state *state = gpiochip_get_data(chip);
 	struct pmic_gpio_pad *pad;
 	int ret;
 
@@ -538,7 +533,7 @@ static int pmic_gpio_get(struct gpio_chip *chip, unsigned pin)
 
 static void pmic_gpio_set(struct gpio_chip *chip, unsigned pin, int value)
 {
-	struct pmic_gpio_state *state = to_gpio_state(chip);
+	struct pmic_gpio_state *state = gpiochip_get_data(chip);
 	unsigned long config;
 
 	config = pinconf_to_config_packed(PIN_CONFIG_OUTPUT, value);
@@ -561,7 +556,7 @@ static int pmic_gpio_of_xlate(struct gpio_chip *chip,
 
 static int pmic_gpio_to_irq(struct gpio_chip *chip, unsigned pin)
 {
-	struct pmic_gpio_state *state = to_gpio_state(chip);
+	struct pmic_gpio_state *state = gpiochip_get_data(chip);
 	struct pmic_gpio_pad *pad;
 
 	pad = state->ctrl->desc->pins[pin].drv_data;
@@ -571,7 +566,7 @@ static int pmic_gpio_to_irq(struct gpio_chip *chip, unsigned pin)
 
 static void pmic_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
 {
-	struct pmic_gpio_state *state = to_gpio_state(chip);
+	struct pmic_gpio_state *state = gpiochip_get_data(chip);
 	unsigned i;
 
 	for (i = 0; i < chip->ngpio; i++) {
@@ -771,7 +766,7 @@ static int pmic_gpio_probe(struct platform_device *pdev)
 	if (IS_ERR(state->ctrl))
 		return PTR_ERR(state->ctrl);
 
-	ret = gpiochip_add(&state->chip);
+	ret = gpiochip_add_data(&state->chip, state);
 	if (ret) {
 		dev_err(state->dev, "can't add gpio chip\n");
 		goto err_chip;