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sunxi: pinctrl: Implement get_pin_muxing function

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The pinmux command uses this function to display pinmux status.

Since the driver cannot map pin numbers to a list of supported
functions, only functions which are common across all pins can be
reported by name.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
This commit is contained in:
Samuel Holland 2021-08-17 00:52:00 -05:00 committed by Andre Przywara
parent 29babfd92b
commit d4b388244a
1 changed files with 27 additions and 0 deletions
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27
drivers/pinctrl/sunxi/pinctrl-sunxi.c
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@ -92,6 +92,32 @@ static int sunxi_pinctrl_pinmux_set(struct udevice *dev, uint pin_selector,
return 0; return 0;
} }
static int sunxi_pinctrl_get_pin_muxing(struct udevice *dev, uint pin_selector,
char *buf, int size)
{
struct sunxi_pinctrl_plat *plat = dev_get_plat(dev);
int bank = pin_selector / SUNXI_GPIOS_PER_BANK;
int pin = pin_selector % SUNXI_GPIOS_PER_BANK;
int mux = sunxi_gpio_get_cfgbank(plat->base + bank, pin);
switch (mux) {
case SUNXI_GPIO_INPUT:
strlcpy(buf, "gpio input", size);
break;
case SUNXI_GPIO_OUTPUT:
strlcpy(buf, "gpio output", size);
break;
case SUNXI_GPIO_DISABLE:
strlcpy(buf, "disabled", size);
break;
default:
snprintf(buf, size, "function %d", mux);
break;
}
return 0;
}
static const struct pinctrl_ops sunxi_pinctrl_ops = { static const struct pinctrl_ops sunxi_pinctrl_ops = {
.get_pins_count = sunxi_pinctrl_get_pins_count, .get_pins_count = sunxi_pinctrl_get_pins_count,
.get_pin_name = sunxi_pinctrl_get_pin_name, .get_pin_name = sunxi_pinctrl_get_pin_name,
@ -99,6 +125,7 @@ static const struct pinctrl_ops sunxi_pinctrl_ops = {
.get_function_name = sunxi_pinctrl_get_function_name, .get_function_name = sunxi_pinctrl_get_function_name,
.pinmux_set = sunxi_pinctrl_pinmux_set, .pinmux_set = sunxi_pinctrl_pinmux_set,
.set_state = pinctrl_generic_set_state, .set_state = pinctrl_generic_set_state,
.get_pin_muxing = sunxi_pinctrl_get_pin_muxing,
}; };
static int sunxi_pinctrl_bind(struct udevice *dev) static int sunxi_pinctrl_bind(struct udevice *dev)