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Commit 8ea72a30 authored by Rabin Vincent's avatar Rabin Vincent Committed by Grant Likely
Browse files

gpio/nomadik: show all pins in debug 



Useful to check the status of the runtime pin muxing.

Signed-off-by: default avatarRabin Vincent <rabin.vincent@stericsson.com>
Reviewed-by: default avatarSrinidhi Kasagar <srinidhi.kasagar@stericsson.com>
[Squashed, modified to use chip-internal IRQ trigger state]
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
parent 37d72457

drivers/gpio/gpio-nomadik.c

+27 −4
Original line number Diff line number Diff line
@@ -811,20 +811,43 @@ static void nmk_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip) 
		bool pull;

		u32 bit = 1 << i;



		if (!label)

			continue;



		is_out = readl(nmk_chip->addr + NMK_GPIO_DIR) & bit;

		pull = !(readl(nmk_chip->addr + NMK_GPIO_PDIS) & bit);

		mode = nmk_gpio_get_mode(gpio);

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

			gpio, label,

			gpio, label ?: "(none)",

			is_out ? "out" : "in ",

			chip->get

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

				: "?  ",

			(mode < 0) ? "unknown" : modes[mode],

			pull ? "pull" : "none");



		if (label && !is_out) {

			int		irq = gpio_to_irq(gpio);

			struct irq_desc	*desc = irq_to_desc(irq);



			/* This races with request_irq(), set_irq_type(),

			 * and set_irq_wake() ... but those are "rare".

			 */

			if (irq >= 0 && desc->action) {

				char *trigger;

				u32 bitmask = nmk_gpio_get_bitmask(gpio);



				if (nmk_chip->edge_rising & bitmask)

					trigger = "edge-rising";

				else if (nmk_chip->edge_falling & bitmask)

					trigger = "edge-falling";

				else

					trigger = "edge-undefined";



				seq_printf(s, " irq-%d %s%s",

					irq, trigger,

					irqd_is_wakeup_set(&desc->irq_data)

						? " wakeup" : "");

			}

		}



		seq_printf(s, "\n");

	}

}