diff options
Diffstat (limited to 'drivers/gpio/gpio-tps65218.c')
| -rw-r--r-- | drivers/gpio/gpio-tps65218.c | 45 |
1 files changed, 35 insertions, 10 deletions
diff --git a/drivers/gpio/gpio-tps65218.c b/drivers/gpio/gpio-tps65218.c index 313c0e484..0eaeac8de 100644 --- a/drivers/gpio/gpio-tps65218.c +++ b/drivers/gpio/gpio-tps65218.c @@ -101,16 +101,6 @@ static int tps65218_gpio_request(struct gpio_chip *gc, unsigned offset) break; case 1: - /* GP02 is push-pull by default, can be set as open drain. */ - if (gpiochip_line_is_open_drain(gc, offset)) { - ret = tps65218_clear_bits(tps65218, - TPS65218_REG_CONFIG1, - TPS65218_CONFIG1_GPO2_BUF, - TPS65218_PROTECT_L1); - if (ret) - return ret; - } - /* Setup GPO2 */ ret = tps65218_clear_bits(tps65218, TPS65218_REG_CONFIG1, TPS65218_CONFIG1_IO1_SEL, @@ -148,6 +138,40 @@ static int tps65218_gpio_request(struct gpio_chip *gc, unsigned offset) return 0; } +static int tps65218_gpio_set_single_ended(struct gpio_chip *gc, + unsigned offset, + enum single_ended_mode mode) +{ + struct tps65218_gpio *tps65218_gpio = gpiochip_get_data(gc); + struct tps65218 *tps65218 = tps65218_gpio->tps65218; + + switch (offset) { + case 0: + case 2: + /* GPO1 is hardwired to be open drain */ + if (mode == LINE_MODE_OPEN_DRAIN) + return 0; + return -ENOTSUPP; + case 1: + /* GPO2 is push-pull by default, can be set as open drain. */ + if (mode == LINE_MODE_OPEN_DRAIN) + return tps65218_clear_bits(tps65218, + TPS65218_REG_CONFIG1, + TPS65218_CONFIG1_GPO2_BUF, + TPS65218_PROTECT_L1); + if (mode == LINE_MODE_PUSH_PULL) + return tps65218_set_bits(tps65218, + TPS65218_REG_CONFIG1, + TPS65218_CONFIG1_GPO2_BUF, + TPS65218_CONFIG1_GPO2_BUF, + TPS65218_PROTECT_L1); + return -ENOTSUPP; + default: + break; + } + return -ENOTSUPP; +} + static struct gpio_chip template_chip = { .label = "gpio-tps65218", .owner = THIS_MODULE, @@ -156,6 +180,7 @@ static struct gpio_chip template_chip = { .direction_input = tps65218_gpio_input, .get = tps65218_gpio_get, .set = tps65218_gpio_set, + .set_single_ended = tps65218_gpio_set_single_ended, .can_sleep = true, .ngpio = 3, .base = -1, |