diff options
| author | Rabin Vincent <rabin.vincent@stericsson.com> | 2011-05-25 01:07:09 +0400 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2011-05-27 03:30:18 +0400 |
| commit | 8ea72a30a31c30ec7fa0c30c743b2cec0712d143 (patch) | |
| tree | 1f34deaf6760087b47993edff4b709415d6842d8 | |
| parent | 37d72457644a1ded37d57dd9ae664e4e228a034d (diff) | |
| download | linux-8ea72a30a31c30ec7fa0c30c743b2cec0712d143.tar.xz | |
gpio/nomadik: show all pins in debug
Useful to check the status of the runtime pin muxing.
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
[Squashed, modified to use chip-internal IRQ trigger state]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| -rw-r--r-- | drivers/gpio/gpio-nomadik.c | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/drivers/gpio/gpio-nomadik.c b/drivers/gpio/gpio-nomadik.c index 307b8131aa8c..380204781f84 100644 --- a/drivers/gpio/gpio-nomadik.c +++ b/drivers/gpio/gpio-nomadik.c @@ -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"); } } |