diff options
Diffstat (limited to 'drivers/pinctrl/core.c')
| -rw-r--r-- | drivers/pinctrl/core.c | 32 |
1 files changed, 28 insertions, 4 deletions
diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c index 2eaa1876534b..5cd5a5a3a403 100644 --- a/drivers/pinctrl/core.c +++ b/drivers/pinctrl/core.c @@ -126,6 +126,25 @@ int pin_get_from_name(struct pinctrl_dev *pctldev, const char *name) } /** + * pin_get_name_from_id() - look up a pin name from a pin id + * @pctldev: the pin control device to lookup the pin on + * @name: the name of the pin to look up + */ +const char *pin_get_name(struct pinctrl_dev *pctldev, const unsigned pin) +{ + const struct pin_desc *desc; + + desc = pin_desc_get(pctldev, pin); + if (desc == NULL) { + dev_err(pctldev->dev, "failed to get pin(%d) name\n", + pin); + return NULL; + } + + return desc->name; +} + +/** * pin_is_valid() - check if pin exists on controller * @pctldev: the pin control device to check the pin on * @pin: pin to check, use the local pin controller index number @@ -1011,6 +1030,7 @@ static int pinctrl_groups_show(struct seq_file *s, void *what) const unsigned *pins; unsigned num_pins; const char *gname = ops->get_group_name(pctldev, selector); + const char *pname; int ret; int i; @@ -1020,10 +1040,14 @@ static int pinctrl_groups_show(struct seq_file *s, void *what) seq_printf(s, "%s [ERROR GETTING PINS]\n", gname); else { - seq_printf(s, "group: %s, pins = [ ", gname); - for (i = 0; i < num_pins; i++) - seq_printf(s, "%d ", pins[i]); - seq_puts(s, "]\n"); + seq_printf(s, "group: %s\n", gname); + for (i = 0; i < num_pins; i++) { + pname = pin_get_name(pctldev, pins[i]); + if (WARN_ON(!pname)) + return -EINVAL; + seq_printf(s, "pin %d (%s)\n", pins[i], pname); + } + seq_puts(s, "\n"); } selector++; } |