Commit 90fd2270 authored by Linus Walleij's avatar Linus Walleij
Browse files

gpio: Slightly more helpful debugfs 



This at least makes debugfs print if the line is active
high or low. That is pretty helpful as what we display
as "lo" or "hi" is the raw physical level of the line.

Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 850d434e

drivers/gpio/gpiolib.c

+7 −4
Original line number Diff line number Diff line
@@ -4584,8 +4584,9 @@ static void gpiolib_dbg_show(struct seq_file *s, struct gpio_device *gdev) 
	struct gpio_chip	*chip = gdev->chip;

	unsigned		gpio = gdev->base;

	struct gpio_desc	*gdesc = &gdev->descs[0];

	int			is_out;

	int			is_irq;

	bool			is_out;

	bool			is_irq;

	bool			active_low;



	for (i = 0; i < gdev->ngpio; i++, gpio++, gdesc++) {

		if (!test_bit(FLAG_REQUESTED, &gdesc->flags)) {
@@ -4599,11 +4600,13 @@ static void gpiolib_dbg_show(struct seq_file *s, struct gpio_device *gdev) 
		gpiod_get_direction(gdesc);

		is_out = test_bit(FLAG_IS_OUT, &gdesc->flags);

		is_irq = test_bit(FLAG_USED_AS_IRQ, &gdesc->flags);

		seq_printf(s, " gpio-%-3d (%-20.20s|%-20.20s) %s %s %s",

		active_low = test_bit(FLAG_ACTIVE_LOW, &gdesc->flags);

		seq_printf(s, " gpio-%-3d (%-20.20s|%-20.20s) %s %s %s%s",

			gpio, gdesc->name ? gdesc->name : "", gdesc->label,

			is_out ? "out" : "in ",

			chip->get ? (chip->get(chip, i) ? "hi" : "lo") : "?  ",

			is_irq ? "IRQ" : "   ");

			is_irq ? "IRQ " : "",

			active_low ? "ACTIVE LOW" : "");

		seq_printf(s, "\n");

	}

}