diff options
| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-09-11 04:34:46 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-09-11 04:34:46 -0300 |
| commit | 863981e96738983919de841ec669e157e6bdaeb0 (patch) | |
| tree | d6d89a12e7eb8017837c057935a2271290907f76 /drivers/gpio/gpio-wm8994.c | |
| parent | 8dec7c70575785729a6a9e6719a955e9c545bcab (diff) | |
Linux-libre 4.7.1-gnupck-4.7.1-gnu
Diffstat (limited to 'drivers/gpio/gpio-wm8994.c')
| -rw-r--r-- | drivers/gpio/gpio-wm8994.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/gpio/gpio-wm8994.c b/drivers/gpio/gpio-wm8994.c index b089df99a..744af388c 100644 --- a/drivers/gpio/gpio-wm8994.c +++ b/drivers/gpio/gpio-wm8994.c @@ -103,6 +103,28 @@ static void wm8994_gpio_set(struct gpio_chip *chip, unsigned offset, int value) wm8994_set_bits(wm8994, WM8994_GPIO_1 + offset, WM8994_GPN_LVL, value); } +static int wm8994_gpio_set_single_ended(struct gpio_chip *chip, + unsigned int offset, + enum single_ended_mode mode) +{ + struct wm8994_gpio *wm8994_gpio = gpiochip_get_data(chip); + struct wm8994 *wm8994 = wm8994_gpio->wm8994; + + switch (mode) { + case LINE_MODE_OPEN_DRAIN: + return wm8994_set_bits(wm8994, WM8994_GPIO_1 + offset, + WM8994_GPN_OP_CFG_MASK, + WM8994_GPN_OP_CFG); + case LINE_MODE_PUSH_PULL: + return wm8994_set_bits(wm8994, WM8994_GPIO_1 + offset, + WM8994_GPN_OP_CFG_MASK, 0); + default: + break; + } + + return -ENOTSUPP; +} + static int wm8994_gpio_to_irq(struct gpio_chip *chip, unsigned offset) { struct wm8994_gpio *wm8994_gpio = gpiochip_get_data(chip); @@ -217,7 +239,7 @@ static void wm8994_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip) if (reg & WM8994_GPN_OP_CFG) seq_printf(s, "open drain "); else - seq_printf(s, "CMOS "); + seq_printf(s, "push-pull "); seq_printf(s, "%s (%x)\n", wm8994_gpio_fn(reg & WM8994_GPN_FN_MASK), reg); @@ -235,6 +257,7 @@ static struct gpio_chip template_chip = { .get = wm8994_gpio_get, .direction_output = wm8994_gpio_direction_out, .set = wm8994_gpio_set, + .set_single_ended = wm8994_gpio_set_single_ended, .to_irq = wm8994_gpio_to_irq, .dbg_show = wm8994_gpio_dbg_show, .can_sleep = true, |