gpio: f7188x: Implement get_direction.
Avoids gpiolib assumptions on initial pin direction, allowing user to observe power-on settings. Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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@ -125,6 +125,7 @@ static inline void superio_exit(int base)
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* GPIO chip.
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*/
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static int f7188x_gpio_get_direction(struct gpio_chip *chip, unsigned offset);
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static int f7188x_gpio_direction_in(struct gpio_chip *chip, unsigned offset);
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static int f7188x_gpio_get(struct gpio_chip *chip, unsigned offset);
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static int f7188x_gpio_direction_out(struct gpio_chip *chip,
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@ -139,6 +140,7 @@ static int f7188x_gpio_set_single_ended(struct gpio_chip *gc,
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.chip = { \
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.label = DRVNAME, \
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.owner = THIS_MODULE, \
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.get_direction = f7188x_gpio_get_direction, \
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.direction_input = f7188x_gpio_direction_in, \
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.get = f7188x_gpio_get, \
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.direction_output = f7188x_gpio_direction_out, \
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@ -209,6 +211,26 @@ static struct f7188x_gpio_bank f81866_gpio_bank[] = {
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F7188X_GPIO_BANK(80, 8, 0x88),
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};
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static int f7188x_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
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{
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int err;
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struct f7188x_gpio_bank *bank =
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container_of(chip, struct f7188x_gpio_bank, chip);
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struct f7188x_sio *sio = bank->data->sio;
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u8 dir;
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err = superio_enter(sio->addr);
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if (err)
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return err;
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superio_select(sio->addr, SIO_LD_GPIO);
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dir = superio_inb(sio->addr, gpio_dir(bank->regbase));
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superio_exit(sio->addr);
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return !(dir & 1 << offset);
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}
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static int f7188x_gpio_direction_in(struct gpio_chip *chip, unsigned offset)
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{
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int err;
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