pinctrl: ssbi-mpp: 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: Björn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/qcom/pinctrl-ssbi-mpp.c

@@ -448,7 +448,7 @@ static struct pinctrl_desc pm8xxx_pinctrl_desc = {
 static int pm8xxx_mpp_direction_input(struct gpio_chip *chip,
 				       unsigned offset)
 {
-	struct pm8xxx_mpp *pctrl = container_of(chip, struct pm8xxx_mpp, chip);
+	struct pm8xxx_mpp *pctrl = gpiochip_get_data(chip);
 	struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
 
 	switch (pin->mode) {
@@ -472,7 +472,7 @@ static int pm8xxx_mpp_direction_output(struct gpio_chip *chip,
 					unsigned offset,
 					int value)
 {
-	struct pm8xxx_mpp *pctrl = container_of(chip, struct pm8xxx_mpp, chip);
+	struct pm8xxx_mpp *pctrl = gpiochip_get_data(chip);
 	struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
 
 	switch (pin->mode) {
@@ -496,7 +496,7 @@ static int pm8xxx_mpp_direction_output(struct gpio_chip *chip,
 
 static int pm8xxx_mpp_get(struct gpio_chip *chip, unsigned offset)
 {
-	struct pm8xxx_mpp *pctrl = container_of(chip, struct pm8xxx_mpp, chip);
+	struct pm8xxx_mpp *pctrl = gpiochip_get_data(chip);
 	struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
 	bool state;
 	int ret;
@@ -513,7 +513,7 @@ static int pm8xxx_mpp_get(struct gpio_chip *chip, unsigned offset)
 
 static void pm8xxx_mpp_set(struct gpio_chip *chip, unsigned offset, int value)
 {
-	struct pm8xxx_mpp *pctrl = container_of(chip, struct pm8xxx_mpp, chip);
+	struct pm8xxx_mpp *pctrl = gpiochip_get_data(chip);
 	struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
 
 	pin->output_value = !!value;
@@ -537,7 +537,7 @@ static int pm8xxx_mpp_of_xlate(struct gpio_chip *chip,
 
 static int pm8xxx_mpp_to_irq(struct gpio_chip *chip, unsigned offset)
 {
-	struct pm8xxx_mpp *pctrl = container_of(chip, struct pm8xxx_mpp, chip);
+	struct pm8xxx_mpp *pctrl = gpiochip_get_data(chip);
 	struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
 
 	return pin->irq;
@@ -552,7 +552,7 @@ static void pm8xxx_mpp_dbg_show_one(struct seq_file *s,
 				  unsigned offset,
 				  unsigned gpio)
 {
-	struct pm8xxx_mpp *pctrl = container_of(chip, struct pm8xxx_mpp, chip);
+	struct pm8xxx_mpp *pctrl = gpiochip_get_data(chip);
 	struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
 
 	static const char * const aout_lvls[] = {
@@ -826,7 +826,7 @@ static int pm8xxx_mpp_probe(struct platform_device *pdev)
 	pctrl->chip.of_gpio_n_cells = 2;
 	pctrl->chip.label = dev_name(pctrl->dev);
 	pctrl->chip.ngpio = pctrl->npins;
-	ret = gpiochip_add(&pctrl->chip);
+	ret = gpiochip_add_data(&pctrl->chip, pctrl);
 	if (ret) {
 		dev_err(&pdev->dev, "failed register gpiochip\n");
 		goto unregister_pinctrl;