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gpiolib: Make WM831x GPIO count dynamic

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This supports future devices with fewer GPIOs.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Mark Brown 2009-10-01 15:41:05 +01:00 committed by Samuel Ortiz
parent 894362f531
commit 6f2ecaae72
3 changed files with 6 additions and 3 deletions
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4
drivers/gpio/wm831x-gpio.c
View File

@ -23,8 +23,6 @@
#include <linux/mfd/wm831x/pdata.h>
#include <linux/mfd/wm831x/gpio.h>
#define WM831X_GPIO_MAX 16
struct wm831x_gpio {
struct wm831x *wm831x;
struct gpio_chip gpio_chip;
@ -192,7 +190,7 @@ static int __devinit wm831x_gpio_probe(struct platform_device *pdev)
wm831x_gpio->wm831x = wm831x;
wm831x_gpio->gpio_chip = template_chip;
wm831x_gpio->gpio_chip.ngpio = WM831X_GPIO_MAX;
wm831x_gpio->gpio_chip.ngpio = wm831x->num_gpio;
wm831x_gpio->gpio_chip.dev = &pdev->dev;
if (pdata && pdata->gpio_base)
wm831x_gpio->gpio_chip.base = pdata->gpio_base;

3
drivers/mfd/wm831x-core.c
View File

@ -1293,16 +1293,19 @@ static int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
switch (ret) {
case WM8310:
parent = WM8310;
wm831x->num_gpio = 16;
dev_info(wm831x->dev, "WM8310 revision %c\n", 'A' + rev);
break;
case WM8311:
parent = WM8311;
wm831x->num_gpio = 16;
dev_info(wm831x->dev, "WM8311 revision %c\n", 'A' + rev);
break;
case WM8312:
parent = WM8312;
wm831x->num_gpio = 16;
dev_info(wm831x->dev, "WM8312 revision %c\n", 'A' + rev);
break;

2
include/linux/mfd/wm831x/core.h
View File

@ -253,6 +253,8 @@ struct wm831x {
unsigned int irq_base;
int irq_masks[5];
int num_gpio;
struct mutex auxadc_lock;
/* The WM831x has a security key blocking access to certain