From: Grygorii Strashko <[email protected]> Now GPIOs, wich are requested as IRQ only, will not be displayed through GPIO debugfs. For example: # cat /proc/interrupts CPU0 CPU1 ... 209: 0 0 4805d000.gpio 11 Edge 0-0021
# cat /debug/gpio ... GPIOs 160-191, platform/4805d000.gpio, gpio: <--- no info about gpio used as IRQ only here GPIOs 192-223, platform/48051000.gpio, gpio: gpio-203 (vtt_fixed ) out hi ... Hence, improve GPIO debugfs code to show such kind of gpio and print IRQ number also. In addition, add marker "requested" for GPIOs wich were requested by using gpioX_request(). After this patch sys/kernel/debug/gpio will produce following output: # cat /debug/gpio ... GPIOs 160-191, platform/4805d000.gpio, gpio: gpio-171 ((null) ) in hi IRQ209 GPIOs 192-223, platform/48051000.gpio, gpio: gpio-203 (vtt_fixed ) out hi requested Signed-off-by: Grygorii Strashko <[email protected]> --- drivers/gpio/gpiolib.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 59eaa23..ea11706 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -2259,19 +2259,23 @@ 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) && + !test_bit(FLAG_USED_AS_IRQ, &gdesc->flags)) 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", + seq_printf(s, " gpio-%-3d (%-20.20s) %s %s", gpio, gdesc->label, is_out ? "out" : "in ", chip->get ? (chip->get(chip, i) ? "hi" : "lo") - : "? ", - is_irq ? "IRQ" : " "); + : "? "); + if (is_irq) + seq_printf(s, " IRQ%d", gpiod_to_irq(gdesc)); + if (test_bit(FLAG_REQUESTED, &gdesc->flags)) + seq_puts(s, " requested"); seq_printf(s, "\n"); } } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
