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Commit 0094050d authored by Kuninori Morimoto's avatar Kuninori Morimoto Committed by Mark Brown
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regulator: gpio: add gpios-status for DT 



config->gpios[x].flags indicates initial pin status,
and it will be used for drvdata->state
on gpio_regulator_probe().
But, current of_get_gpio_regulator_config() doesn't care
about this flags.
This patch adds new gpios-status property in order to
care about initial pin status.

Signed-off-by: default avatarKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent 9c25960c

Documentation/devicetree/bindings/regulator/gpio-regulator.txt

+1 −0
Original line number Diff line number Diff line
@@ -8,6 +8,7 @@ Required properties: 
Optional properties:

- enable-gpio		: GPIO to use to enable/disable the regulator.

- gpios			: GPIO group used to control voltage.

- gpios-states		: gpios pin's initial states. 1 means HIGH

- startup-delay-us	: Startup time in microseconds.

- enable-active-high	: Polarity of GPIO is active high (default is low).

drivers/regulator/gpio-regulator.c

+11 −0
Original line number Diff line number Diff line
@@ -172,11 +172,22 @@ of_get_gpio_regulator_config(struct device *dev, struct device_node *np) 
	if (!config->gpios)

		return ERR_PTR(-ENOMEM);



	prop = of_find_property(np, "gpios-states", NULL);

	if (prop) {

		proplen = prop->length / sizeof(int);

		if (proplen != config->nr_gpios) {

			/* gpios <-> gpios-states mismatch */

			prop = NULL;

		}

	}



	for (i = 0; i < config->nr_gpios; i++) {

		gpio = of_get_named_gpio(np, "gpios", i);

		if (gpio < 0)

			break;

		config->gpios[i].gpio = gpio;

		if (prop && be32_to_cpup((int *)prop->value + i))

			config->gpios[i].flags = GPIOF_OUT_INIT_HIGH;

	}



	/* Fetch states. */