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Commit ced433e2 authored by Markus Pargmann's avatar Markus Pargmann Committed by Linus Walleij
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gpiolib: Add gpio name information to /sys/kernel/debug/gpio 



Add some information about gpio names to the debugfs gpio file. name and
label of a GPIO are then displayed next to each other. This way it is
easy to see what the real name of GPIO is and what the driver requested
it for.

Signed-off-by: default avatarMarkus Pargmann <mpa@pengutronix.de>
[Dropped unsolicited sysfs ABI patch hunk]
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent ddd54040

drivers/gpio/gpiolib.c

+8 −3
Original line number Diff line number Diff line
@@ -2378,14 +2378,19 @@ static void gpiolib_dbg_show(struct seq_file *s, struct gpio_chip *chip) 
	int			is_irq;



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

		if (!test_bit(FLAG_REQUESTED, &gdesc->flags))

		if (!test_bit(FLAG_REQUESTED, &gdesc->flags)) {

			if (gdesc->name) {

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

					   gpio, gdesc->name);

			}

			continue;

		}



		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) %s %s %s",

			gpio, gdesc->label,

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

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

			is_out ? "out" : "in ",

			chip->get

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