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| author | Takashi Iwai <tiwai@suse.de> | 2011-01-13 08:37:24 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2011-01-13 08:37:24 +0100 |
| commit | 6db9a0f326d3144d790d9479309df480a8f562e4 (patch) | |
| tree | 650a8950c35c087278ecee1b8d123f75f601ebc8 /drivers/gpio | |
| parent | Merge branch 'topic/hda' into for-linus (diff) | |
| parent | Merge branch 'for-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/br... (diff) | |
| download | linux-6db9a0f326d3144d790d9479309df480a8f562e4.tar.xz linux-6db9a0f326d3144d790d9479309df480a8f562e4.zip | |
Merge branch 'topic/asoc' into for-linus
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/wm8994-gpio.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/gpio/wm8994-gpio.c b/drivers/gpio/wm8994-gpio.c index 618398e4ed8e..c822baacd8fc 100644 --- a/drivers/gpio/wm8994-gpio.c +++ b/drivers/gpio/wm8994-gpio.c @@ -35,6 +35,29 @@ static inline struct wm8994_gpio *to_wm8994_gpio(struct gpio_chip *chip) return container_of(chip, struct wm8994_gpio, gpio_chip); } +static int wm8994_gpio_request(struct gpio_chip *chip, unsigned offset) +{ + struct wm8994_gpio *wm8994_gpio = to_wm8994_gpio(chip); + struct wm8994 *wm8994 = wm8994_gpio->wm8994; + + switch (wm8994->type) { + case WM8958: + switch (offset) { + case 1: + case 2: + case 3: + case 4: + case 6: + return -EINVAL; + } + break; + default: + break; + } + + return 0; +} + static int wm8994_gpio_direction_in(struct gpio_chip *chip, unsigned offset) { struct wm8994_gpio *wm8994_gpio = to_wm8994_gpio(chip); @@ -136,6 +159,7 @@ static void wm8994_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip) static struct gpio_chip template_chip = { .label = "wm8994", .owner = THIS_MODULE, + .request = wm8994_gpio_request, .direction_input = wm8994_gpio_direction_in, .get = wm8994_gpio_get, .direction_output = wm8994_gpio_direction_out, |