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Commit 8ea72a30 authored by Rabin Vincent's avatar Rabin Vincent Committed by Grant Likely
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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
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+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");
	}
}