pinctrl: core: print gpio in pins debugfs file

[mirror_ubuntu-hirsute-kernel.git] / drivers / pinctrl / core.c

diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
index 3e8d1630d29ed83bbdcdffb143c6d35630058174..3663d87f51a0136d36f2f3035808ddb99f1d2a7d 100644 (file)
--- 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);