[PATCH 9/9] gpiolib: Add gpio name information to /sys/kernel/debug/gpio
From: Markus Pargmann <hidden>
Date: 2015-07-17 09:33:41
Also in:
linux-gpio
Subsystem:
gpio subsystem, the rest · Maintainers:
Linus Walleij, Bartosz Golaszewski, Linus Torvalds
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: Markus Pargmann <redacted> --- drivers/gpio/gpiolib.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index dcac3bcf21dd..0f1d1f5faf5d 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c@@ -2308,14 +2308,19 @@ 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")
--
2.1.4