Merge branch 'ib-pinctrl-genprops' of /home/linus/linux-pinctrl into devel (283a9813) · Commits · 戴 / test

Documentation/gpio/driver.txt

+5 −4

Original line number	Diff line number	Diff line
		@@ -146,10 +146,11 @@ a pull-up resistor is needed on the outgoing rail to complete the circuit, and
		in the second case, a pull-down resistor is needed on the rail.

		Hardware that supports open drain or open source or both, can implement a
		special callback in the gpio_chip: .set_single_ended() that takes an enum flag
		telling whether to configure the line as open drain, open source or push-pull.
		This will happen in response to the GPIO_OPEN_DRAIN or GPIO_OPEN_SOURCE flag
		set in the machine file, or coming from other hardware descriptions.
		special callback in the gpio_chip: .set_config() that takes a generic
		pinconf packed value telling whether to configure the line as open drain,
		open source or push-pull. This will happen in response to the
		GPIO_OPEN_DRAIN or GPIO_OPEN_SOURCE flag set in the machine file, or coming
		from other hardware descriptions.

		If this state can not be configured in hardware, i.e. if the GPIO hardware does
		not support open drain/open source in hardware, the GPIO library will instead

+13 −1

Original line number	Diff line number	Diff line
		@@ -308,6 +308,18 @@ static int bcm_kona_gpio_set_debounce(struct gpio_chip *chip, unsigned gpio,
		return 0;
		}

		static int bcm_kona_gpio_set_config(struct gpio_chip *chip, unsigned gpio,
		unsigned long config)
		{
		u32 debounce;

		if (pinconf_to_config_param(config) != PIN_CONFIG_INPUT_DEBOUNCE)
		return -ENOTSUPP;

		debounce = pinconf_to_config_argument(config);
		return bcm_kona_gpio_set_debounce(chip, gpio, debounce);
		}

		static const struct gpio_chip template_chip = {
		.label = "bcm-kona-gpio",
		.owner = THIS_MODULE,
		@@ -318,7 +330,7 @@ static const struct gpio_chip template_chip = {
		.get = bcm_kona_gpio_get,
		.direction_output = bcm_kona_gpio_direction_output,
		.set = bcm_kona_gpio_set,
		.set_debounce = bcm_kona_gpio_set_debounce,
		.set_config = bcm_kona_gpio_set_config,
		.to_irq = bcm_kona_gpio_to_irq,
		.base = 0,
		};

+8 −4

Original line number	Diff line number	Diff line
		@@ -272,12 +272,16 @@ static int dln2_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
		return dln2_gpio_set_direction(chip, offset, DLN2_GPIO_DIRECTION_OUT);
		}

		static int dln2_gpio_set_debounce(struct gpio_chip *chip, unsigned offset,
		unsigned debounce)
		static int dln2_gpio_set_config(struct gpio_chip *chip, unsigned offset,
		unsigned long config)
		{
		struct dln2_gpio *dln2 = gpiochip_get_data(chip);
		__le32 duration = cpu_to_le32(debounce);
		__le32 duration;

		if (pinconf_to_config_param(config) != PIN_CONFIG_INPUT_DEBOUNCE)
		return -ENOTSUPP;

		duration = cpu_to_le32(pinconf_to_config_argument(config));
		return dln2_transfer_tx(dln2->pdev, DLN2_GPIO_SET_DEBOUNCE,
		&duration, sizeof(duration));
		}
		@@ -474,7 +478,7 @@ static int dln2_gpio_probe(struct platform_device *pdev)
		dln2->gpio.get_direction = dln2_gpio_get_direction;
		dln2->gpio.direction_input = dln2_gpio_direction_input;
		dln2->gpio.direction_output = dln2_gpio_direction_output;
		dln2->gpio.set_debounce = dln2_gpio_set_debounce;
		dln2->gpio.set_config = dln2_gpio_set_config;

		platform_set_drvdata(pdev, dln2);

+13 −1

Original line number	Diff line number	Diff line
		@@ -279,6 +279,18 @@ static int dwapb_gpio_set_debounce(struct gpio_chip *gc,
		return 0;
		}

		static int dwapb_gpio_set_config(struct gpio_chip *gc, unsigned offset,
		unsigned long config)
		{
		u32 debounce;

		if (pinconf_to_config_param(config) != PIN_CONFIG_INPUT_DEBOUNCE)
		return -ENOTSUPP;

		debounce = pinconf_to_config_argument(config);
		return dwapb_gpio_set_debounce(gc, offset, debounce);
		}

		static irqreturn_t dwapb_irq_handler_mfd(int irq, void *dev_id)
		{
		u32 worked;
		@@ -426,7 +438,7 @@ static int dwapb_gpio_add_port(struct dwapb_gpio *gpio,

		/* Only port A support debounce */
		if (pp->idx == 0)
		port->gc.set_debounce = dwapb_gpio_set_debounce;
		port->gc.set_config = dwapb_gpio_set_config;

		if (pp->irq)
		dwapb_configure_irqs(gpio, port, pp);

+8 −3

Original line number	Diff line number	Diff line
		@@ -291,15 +291,20 @@ static struct ep93xx_gpio_bank ep93xx_gpio_banks[] = {
		EP93XX_GPIO_BANK("H", 0x40, 0x44, 56, false),
		};

		static int ep93xx_gpio_set_debounce(struct gpio_chip *chip,
		unsigned offset, unsigned debounce)
		static int ep93xx_gpio_set_config(struct gpio_chip *chip, unsigned offset,
		unsigned long config)
		{
		int gpio = chip->base + offset;
		int irq = gpio_to_irq(gpio);
		u32 debounce;

		if (pinconf_to_config_param(config) != PIN_CONFIG_INPUT_DEBOUNCE)
		return -ENOTSUPP;

		if (irq < 0)
		return -EINVAL;

		debounce = pinconf_to_config_argument(config);
		ep93xx_gpio_int_debounce(irq, debounce ? true : false);

		return 0;
		@@ -335,7 +340,7 @@ static int ep93xx_gpio_add_bank(struct gpio_chip gc, struct device dev,
		gc->base = bank->base;

		if (bank->has_debounce) {
		gc->set_debounce = ep93xx_gpio_set_debounce;
		gc->set_config = ep93xx_gpio_set_config;
		gc->to_irq = ep93xx_gpio_to_irq;
		}