From f1b206cf7c57561ea156798f323b0541a783bd2f Mon Sep 17 00:00:00 2001 From: Drew Fustini Date: Wed, 22 Jul 2020 14:27:52 +0200 Subject: pinctrl: core: print gpio in pins debugfs file If there is a gpio range mapping for the pin, then print out the gpio chip and line index for the pin in the debugfs 'pins' file with the format: "[line-index]:[gpio-label]" Here is example output on the BeagleBoard.org PocketBeagle (AM3358): /sys/kernel/debug/pinctrl/44e10800.pinmux-pinctrl-single/pins pin 25 (PIN25) 25:gpio-32-63 44e10864 00000037 pinctrl-single pin 26 (PIN26) 26:gpio-32-63 44e10868 00000037 pinctrl-single pin 27 (PIN27) 27:gpio-32-63 44e1086c 00000037 pinctrl-single pin 28 (PIN28) 0:? 44e10870 00000036 pinctrl-single pin 29 (PIN29) 0:? 44e10874 00000006 pinctrl-single pin 30 (PIN30) 28:gpio-32-63 44e10878 00000027 pinctrl-single pin 31 (PIN31) 29:gpio-32-63 44e1087c 00000037 pinctrl-single pin 32 (PIN32) 30:gpio-32-63 44e10880 00000037 pinctrl-single pin 33 (PIN33) 31:gpio-32-63 44e10884 00000037 pinctrl-single pin 34 (PIN34) 0:gpio-64-95 44e10888 00000037 pinctrl-single pin 35 (PIN35) 1:gpio-64-95 44e1088c 00000037 pinctrl-single Suggested-by: Andy Shevchenko Suggested-by: Tony Lindgren Signed-off-by: Drew Fustini Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20200722122751.266440-1-drew@beagleboard.org Signed-off-by: Linus Walleij --- drivers/pinctrl/core.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'drivers/pinctrl') diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c index 3e8d1630d29e..3663d87f51a0 100644 --- a/drivers/pinctrl/core.c +++ b/drivers/pinctrl/core.c @@ -27,6 +27,7 @@ #include #ifdef CONFIG_GPIOLIB +#include "../gpio/gpiolib.h" #include #endif @@ -1601,6 +1602,9 @@ static int pinctrl_pins_show(struct seq_file *s, void *what) struct pinctrl_dev *pctldev = s->private; const struct pinctrl_ops *ops = pctldev->desc->pctlops; unsigned i, pin; + struct pinctrl_gpio_range *range; + unsigned int gpio_num; + struct gpio_chip *chip; seq_printf(s, "registered pins: %d\n", pctldev->desc->npins); @@ -1618,6 +1622,23 @@ static int pinctrl_pins_show(struct seq_file *s, void *what) seq_printf(s, "pin %d (%s) ", pin, desc->name); +#ifdef CONFIG_GPIOLIB + gpio_num = 0; + list_for_each_entry(range, &pctldev->gpio_ranges, node) { + if ((pin >= range->pin_base) && + (pin < (range->pin_base + range->npins))) { + gpio_num = range->base + (pin - range->pin_base); + break; + } + } + chip = gpio_to_chip(gpio_num); + if (chip && chip->gpiodev && chip->gpiodev->base) + seq_printf(s, "%u:%s ", gpio_num - + chip->gpiodev->base, chip->label); + else + seq_puts(s, "0:? "); +#endif + /* Driver-specific info per pin */ if (ops->pin_dbg_show) ops->pin_dbg_show(pctldev, s, pin); -- cgit v1.2.3