| Message ID | 20200722122751.266440-1-drew@beagleboard.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v5] pinctrl: core: print gpio in pins debugfs file | expand |
On Wed, Jul 22, 2020 at 2:29 PM Drew Fustini <drew@beagleboard.org> wrote: > 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 <andy.shevchenko@gmail.com> > Suggested-by: Tony Lindgren <tony@atomide.com> > Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> > Signed-off-by: Drew Fustini <drew@beagleboard.org> Neat, this v5 patch applied! Yours, Linus Walleij
diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c index 821242bb4b16..02a4cc3b60c8 100644 --- a/drivers/pinctrl/core.c +++ b/drivers/pinctrl/core.c @@ -27,6 +27,7 @@ #include <linux/pinctrl/machine.h> #ifdef CONFIG_GPIOLIB +#include "../gpio/gpiolib.h" #include <asm-generic/gpio.h> #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);