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powerpc: simple-gpio: use gpiochip data pointer

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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: Anton Vorontsov <anton@enomsg.org>
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>
This commit is contained in:
Linus Walleij 2015-12-08 15:53:29 +01:00
parent 1e714e54b5
commit 937daafca7
1 changed files with 4 additions and 9 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

13
arch/powerpc/sysdev/simple_gpio.c
View file

@ -19,7 +19,7 @@
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/gpio.h>
#include <linux/gpio/driver.h>
#include <linux/slab.h>
#include <asm/prom.h>
#include "simple_gpio.h"
@ -32,11 +32,6 @@ struct u8_gpio_chip {
u8 data;
};
static struct u8_gpio_chip *to_u8_gpio_chip(struct of_mm_gpio_chip *mm_gc)
{
return container_of(mm_gc, struct u8_gpio_chip, mm_gc);
}
static u8 u8_pin2mask(unsigned int pin)
{
return 1 << (8 - 1 - pin);
@ -52,7 +47,7 @@ static int u8_gpio_get(struct gpio_chip *gc, unsigned int gpio)
static void u8_gpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
{
struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
struct u8_gpio_chip *u8_gc = to_u8_gpio_chip(mm_gc);
struct u8_gpio_chip *u8_gc = gpiochip_get_data(gc);
unsigned long flags;
spin_lock_irqsave(&u8_gc->lock, flags);
@ -80,7 +75,7 @@ static int u8_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
static void u8_gpio_save_regs(struct of_mm_gpio_chip *mm_gc)
{
struct u8_gpio_chip *u8_gc = to_u8_gpio_chip(mm_gc);
struct u8_gpio_chip *u8_gc = gpiochip_get_data(&mm_gc->gc);
u8_gc->data = in_8(mm_gc->regs);
}
@ -108,7 +103,7 @@ static int __init u8_simple_gpiochip_add(struct device_node *np)
gc->get = u8_gpio_get;
gc->set = u8_gpio_set;
ret = of_mm_gpiochip_add(np, mm_gc);
ret = of_mm_gpiochip_add_data(np, mm_gc, u8_gc);
if (ret)
goto err;
return 0;