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gpio: omap: handle pin config bias flags

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Modify omap_gpio_set_config() to handle pin config bias flags by calling
gpiochip_generic_config().

The pin group for the gpio line must have the corresponding pinconf
properties:

PIN_CONFIG_BIAS_PULL_UP requires "pinctrl-single,bias-pullup"
PIN_CONFIG_BIAS_PULL_DOWN requires "pinctrl-single,bias-pulldown"

This is necessary for pcs_pinconf_set() to find the requested bias
parameter in the PIN_MAP_TYPE_CONFIGS_GROUP pinctrl map.

Signed-off-by: Drew Fustini <drew@beagleboard.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Grygorii Strashko <grygorii.strashko@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20200715213738.1640030-1-drew@beagleboard.org
Link: https://lore.kernel.org/r/20200717194043.1774643-1-drew@beagleboard.org
This commit is contained in:
Drew Fustini 2020-07-17 21:40:43 +02:00 committed by Linus Walleij
parent 50787be3ad
commit 75dec56710
1 changed files with 10 additions and 4 deletions
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14
drivers/gpio/gpio-omap.c
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@ -897,12 +897,18 @@ static int omap_gpio_set_config(struct gpio_chip *chip, unsigned offset,
unsigned long config)
{
u32 debounce;
int ret = -ENOTSUPP;
if (pinconf_to_config_param(config) != PIN_CONFIG_INPUT_DEBOUNCE)
return -ENOTSUPP;
if ((pinconf_to_config_param(config) == PIN_CONFIG_BIAS_DISABLE) ||
(pinconf_to_config_param(config) == PIN_CONFIG_BIAS_PULL_UP) ||
(pinconf_to_config_param(config) == PIN_CONFIG_BIAS_PULL_DOWN)) {
ret = gpiochip_generic_config(chip, offset, config);
} else if (pinconf_to_config_param(config) == PIN_CONFIG_INPUT_DEBOUNCE) {
debounce = pinconf_to_config_argument(config);
ret = omap_gpio_debounce(chip, offset, debounce);
}
debounce = pinconf_to_config_argument(config);
return omap_gpio_debounce(chip, offset, debounce);
return ret;
}
static void omap_gpio_set(struct gpio_chip *chip, unsigned offset, int value)