[PATCH 9/9] gpiolib: Add gpio name information to /sys/kernel/debug/gpio
From: johan@kernel.org (Johan Hovold)
Date: 2015-07-28 09:58:42
Also in:
linux-gpio
On Fri, Jul 17, 2015 at 11:32:50AM +0200, Markus Pargmann wrote:
quoted hunk ↗ jump to hunk
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); + }
So now we'd no longer just be listing requested gpios, but on a similar format to how requested ones used to be represented. Then there's the debugfs as ABI discussion... Johan