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Commit c7f5326f authored by Bartosz Golaszewski's avatar Bartosz Golaszewski Committed by Linus Walleij
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gpio: mockup: support irqmask and irqunmask



Even though this is a testing module, be nice and actually implement
these functions.

Signed-off-by: default avatarBartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 01a3f23c
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+20 −6
Original line number Diff line number Diff line
@@ -41,6 +41,7 @@ enum {
struct gpio_mockup_line_status {
	int dir;
	bool value;
	bool irq_enabled;
};

struct gpio_mockup_irq_context {
@@ -142,12 +143,21 @@ static int gpio_mockup_to_irq(struct gpio_chip *chip, unsigned int offset)
	return chip->irq_base + offset;
}

/*
 * While we should generally support irqmask and irqunmask, this driver is
 * for testing purposes only so we don't care.
 */
static void gpio_mockup_irqmask(struct irq_data *d) { }
static void gpio_mockup_irqunmask(struct irq_data *d) { }
static void gpio_mockup_irqmask(struct irq_data *data)
{
	struct gpio_chip *gc = irq_data_get_irq_chip_data(data);
	struct gpio_mockup_chip *chip = gpiochip_get_data(gc);

	chip->lines[data->irq - gc->irq_base].irq_enabled = false;
}

static void gpio_mockup_irqunmask(struct irq_data *data)
{
	struct gpio_chip *gc = irq_data_get_irq_chip_data(data);
	struct gpio_mockup_chip *chip = gpiochip_get_data(gc);

	chip->lines[data->irq - gc->irq_base].irq_enabled = true;
}

static struct irq_chip gpio_mockup_irqchip = {
	.name		= GPIO_MOCKUP_NAME,
@@ -178,6 +188,7 @@ static int gpio_mockup_irqchip_setup(struct device *dev,

	for (i = 0; i < gc->ngpio; i++) {
		irq_set_chip(irq_base + i, gc->irqchip);
		irq_set_chip_data(irq_base + i, gc);
		irq_set_handler(irq_base + i, &handle_simple_irq);
		irq_modify_status(irq_base + i,
				  IRQ_NOREQUEST | IRQ_NOAUTOEN, IRQ_NOPROBE);
@@ -206,6 +217,9 @@ static ssize_t gpio_mockup_event_write(struct file *file,
	chip = priv->chip;
	gc = &chip->gc;

	if (!chip->lines[priv->offset].irq_enabled)
		return size;

	if (copy_from_user(&buf, usr_buf, 1))
		return -EFAULT;