diff options
Diffstat (limited to 'sound/soc/codecs/rt5677.c')
| -rw-r--r-- | sound/soc/codecs/rt5677.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/sound/soc/codecs/rt5677.c b/sound/soc/codecs/rt5677.c index ac084ca008f3..73fc008d558a 100644 --- a/sound/soc/codecs/rt5677.c +++ b/sound/soc/codecs/rt5677.c @@ -6,6 +6,7 @@ * Author: Oder Chiou <oder_chiou@realtek.com> */ +#include <linux/bits.h> #include <linux/delay.h> #include <linux/firmware.h> #include <linux/fs.h> @@ -4767,6 +4768,21 @@ static int rt5677_gpio_direction_in(struct gpio_chip *chip, unsigned offset) return rt5677_update_gpio_bits(rt5677, offset, m, v); } +static int rt5677_gpio_get_direction(struct gpio_chip *chip, unsigned int offset) +{ + struct rt5677_priv *rt5677 = gpiochip_get_data(chip); + unsigned int shift = RT5677_GPIOx_DIR_SFT + (offset % 5) * 3; + unsigned int bank = offset / 5; + unsigned int reg = bank ? RT5677_GPIO_CTRL3 : RT5677_GPIO_CTRL2; + int ret; + + ret = regmap_test_bits(rt5677->regmap, reg, BIT(shift)); + if (ret < 0) + return ret; + + return ret ? GPIO_LINE_DIRECTION_OUT : GPIO_LINE_DIRECTION_IN; +} + /* * Configures the GPIO as * 0 - floating @@ -4834,6 +4850,7 @@ static int rt5677_to_irq(struct gpio_chip *chip, unsigned offset) static const struct gpio_chip rt5677_template_chip = { .label = RT5677_DRV_NAME, .owner = THIS_MODULE, + .get_direction = rt5677_gpio_get_direction, .direction_output = rt5677_gpio_direction_out, .set = rt5677_gpio_set, .direction_input = rt5677_gpio_direction_in, |