diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2016-09-19 11:08:56 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2016-09-19 11:08:56 +0300 |
| commit | 14063d71e5e6775c676755612fc81deb029685c4 (patch) | |
| tree | 9b31f7c8e1076dd775c05a94ceb3b66718bbd4c1 | |
| parent | 35a26144a193536eb8870de99ff4b7093b7879a3 (diff) | |
| download | linux-14063d71e5e6775c676755612fc81deb029685c4.tar.xz | |
gpio: tc3589x: add .get_direction() and small cleanup
This adds a .get_direction() callback to the TC3589x and
renames the function for setting single-ended mode to be
more to the point.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| -rw-r--r-- | drivers/gpio/gpio-tc3589x.c | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/drivers/gpio/gpio-tc3589x.c b/drivers/gpio/gpio-tc3589x.c index 5baa45768ec5..537a4335ddec 100644 --- a/drivers/gpio/gpio-tc3589x.c +++ b/drivers/gpio/gpio-tc3589x.c @@ -84,9 +84,25 @@ static int tc3589x_gpio_direction_input(struct gpio_chip *chip, return tc3589x_set_bits(tc3589x, reg, BIT(pos), 0); } -static int tc3589x_gpio_single_ended(struct gpio_chip *chip, - unsigned offset, - enum single_ended_mode mode) +static int tc3589x_gpio_get_direction(struct gpio_chip *chip, + unsigned offset) +{ + struct tc3589x_gpio *tc3589x_gpio = gpiochip_get_data(chip); + struct tc3589x *tc3589x = tc3589x_gpio->tc3589x; + u8 reg = TC3589x_GPIODIR0 + offset / 8; + unsigned pos = offset % 8; + int ret; + + ret = tc3589x_reg_read(tc3589x, reg); + if (ret < 0) + return ret; + + return !!(ret & BIT(pos)); +} + +static int tc3589x_gpio_set_single_ended(struct gpio_chip *chip, + unsigned offset, + enum single_ended_mode mode) { struct tc3589x_gpio *tc3589x_gpio = gpiochip_get_data(chip); struct tc3589x *tc3589x = tc3589x_gpio->tc3589x; @@ -127,11 +143,12 @@ static int tc3589x_gpio_single_ended(struct gpio_chip *chip, static const struct gpio_chip template_chip = { .label = "tc3589x", .owner = THIS_MODULE, - .direction_input = tc3589x_gpio_direction_input, .get = tc3589x_gpio_get, - .direction_output = tc3589x_gpio_direction_output, .set = tc3589x_gpio_set, - .set_single_ended = tc3589x_gpio_single_ended, + .direction_output = tc3589x_gpio_direction_output, + .direction_input = tc3589x_gpio_direction_input, + .get_direction = tc3589x_gpio_get_direction, + .set_single_ended = tc3589x_gpio_set_single_ended, .can_sleep = true, }; |