powerpc: sysdev: cpm1: 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: Anatolij Gustschin <agust@denx.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

arch/powerpc/sysdev/cpm1.c

@@ -532,15 +532,9 @@ struct cpm1_gpio16_chip {
 	u16 cpdata;
 };
 
-static inline struct cpm1_gpio16_chip *
-to_cpm1_gpio16_chip(struct of_mm_gpio_chip *mm_gc)
-{
-	return container_of(mm_gc, struct cpm1_gpio16_chip, mm_gc);
-}
-
 static void cpm1_gpio16_save_regs(struct of_mm_gpio_chip *mm_gc)
 {
-	struct cpm1_gpio16_chip *cpm1_gc = to_cpm1_gpio16_chip(mm_gc);
+	struct cpm1_gpio16_chip *cpm1_gc = gpiochip_get_data(&mm_gc->gc);
 	struct cpm_ioport16 __iomem *iop = mm_gc->regs;
 
 	cpm1_gc->cpdata = in_be16(&iop->dat);
@@ -560,7 +554,7 @@ static int cpm1_gpio16_get(struct gpio_chip *gc, unsigned int gpio)
 static void __cpm1_gpio16_set(struct of_mm_gpio_chip *mm_gc, u16 pin_mask,
 	int value)
 {
-	struct cpm1_gpio16_chip *cpm1_gc = to_cpm1_gpio16_chip(mm_gc);
+	struct cpm1_gpio16_chip *cpm1_gc = gpiochip_get_data(&mm_gc->gc);
 	struct cpm_ioport16 __iomem *iop = mm_gc->regs;
 
 	if (value)
@@ -574,7 +568,7 @@ static void __cpm1_gpio16_set(struct of_mm_gpio_chip *mm_gc, u16 pin_mask,
 static void cpm1_gpio16_set(struct gpio_chip *gc, unsigned int gpio, int value)
 {
 	struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
-	struct cpm1_gpio16_chip *cpm1_gc = to_cpm1_gpio16_chip(mm_gc);
+	struct cpm1_gpio16_chip *cpm1_gc = gpiochip_get_data(&mm_gc->gc);
 	unsigned long flags;
 	u16 pin_mask = 1 << (15 - gpio);
 
@@ -588,7 +582,7 @@ static void cpm1_gpio16_set(struct gpio_chip *gc, unsigned int gpio, int value)
 static int cpm1_gpio16_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
 {
 	struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
-	struct cpm1_gpio16_chip *cpm1_gc = to_cpm1_gpio16_chip(mm_gc);
+	struct cpm1_gpio16_chip *cpm1_gc = gpiochip_get_data(&mm_gc->gc);
 	struct cpm_ioport16 __iomem *iop = mm_gc->regs;
 	unsigned long flags;
 	u16 pin_mask = 1 << (15 - gpio);
@@ -606,7 +600,7 @@ static int cpm1_gpio16_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
 static int cpm1_gpio16_dir_in(struct gpio_chip *gc, unsigned int gpio)
 {
 	struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
-	struct cpm1_gpio16_chip *cpm1_gc = to_cpm1_gpio16_chip(mm_gc);
+	struct cpm1_gpio16_chip *cpm1_gc = gpiochip_get_data(&mm_gc->gc);
 	struct cpm_ioport16 __iomem *iop = mm_gc->regs;
 	unsigned long flags;
 	u16 pin_mask = 1 << (15 - gpio);
@@ -642,7 +636,7 @@ int cpm1_gpiochip_add16(struct device_node *np)
 	gc->get = cpm1_gpio16_get;
 	gc->set = cpm1_gpio16_set;
 
-	return of_mm_gpiochip_add(np, mm_gc);
+	return of_mm_gpiochip_add_data(np, mm_gc, cpm1_gc);
 }
 
 struct cpm1_gpio32_chip {
@@ -653,15 +647,9 @@ struct cpm1_gpio32_chip {
 	u32 cpdata;
 };
 
-static inline struct cpm1_gpio32_chip *
-to_cpm1_gpio32_chip(struct of_mm_gpio_chip *mm_gc)
-{
-	return container_of(mm_gc, struct cpm1_gpio32_chip, mm_gc);
-}
-
 static void cpm1_gpio32_save_regs(struct of_mm_gpio_chip *mm_gc)
 {
-	struct cpm1_gpio32_chip *cpm1_gc = to_cpm1_gpio32_chip(mm_gc);
+	struct cpm1_gpio32_chip *cpm1_gc = gpiochip_get_data(&mm_gc->gc);
 	struct cpm_ioport32b __iomem *iop = mm_gc->regs;
 
 	cpm1_gc->cpdata = in_be32(&iop->dat);
@@ -681,7 +669,7 @@ static int cpm1_gpio32_get(struct gpio_chip *gc, unsigned int gpio)
 static void __cpm1_gpio32_set(struct of_mm_gpio_chip *mm_gc, u32 pin_mask,
 	int value)
 {
-	struct cpm1_gpio32_chip *cpm1_gc = to_cpm1_gpio32_chip(mm_gc);
+	struct cpm1_gpio32_chip *cpm1_gc = gpiochip_get_data(&mm_gc->gc);
 	struct cpm_ioport32b __iomem *iop = mm_gc->regs;
 
 	if (value)
@@ -695,7 +683,7 @@ static void __cpm1_gpio32_set(struct of_mm_gpio_chip *mm_gc, u32 pin_mask,
 static void cpm1_gpio32_set(struct gpio_chip *gc, unsigned int gpio, int value)
 {
 	struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
-	struct cpm1_gpio32_chip *cpm1_gc = to_cpm1_gpio32_chip(mm_gc);
+	struct cpm1_gpio32_chip *cpm1_gc = gpiochip_get_data(&mm_gc->gc);
 	unsigned long flags;
 	u32 pin_mask = 1 << (31 - gpio);
 
@@ -709,7 +697,7 @@ static void cpm1_gpio32_set(struct gpio_chip *gc, unsigned int gpio, int value)
 static int cpm1_gpio32_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
 {
 	struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
-	struct cpm1_gpio32_chip *cpm1_gc = to_cpm1_gpio32_chip(mm_gc);
+	struct cpm1_gpio32_chip *cpm1_gc = gpiochip_get_data(&mm_gc->gc);
 	struct cpm_ioport32b __iomem *iop = mm_gc->regs;
 	unsigned long flags;
 	u32 pin_mask = 1 << (31 - gpio);
@@ -727,7 +715,7 @@ static int cpm1_gpio32_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
 static int cpm1_gpio32_dir_in(struct gpio_chip *gc, unsigned int gpio)
 {
 	struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
-	struct cpm1_gpio32_chip *cpm1_gc = to_cpm1_gpio32_chip(mm_gc);
+	struct cpm1_gpio32_chip *cpm1_gc = gpiochip_get_data(&mm_gc->gc);
 	struct cpm_ioport32b __iomem *iop = mm_gc->regs;
 	unsigned long flags;
 	u32 pin_mask = 1 << (31 - gpio);
@@ -763,7 +751,7 @@ int cpm1_gpiochip_add32(struct device_node *np)
 	gc->get = cpm1_gpio32_get;
 	gc->set = cpm1_gpio32_set;
 
-	return of_mm_gpiochip_add(np, mm_gc);
+	return of_mm_gpiochip_add_data(np, mm_gc, cpm1_gc);
 }
 
 static int cpm_init_par_io(void)