diff options
Diffstat (limited to 'drivers/pinctrl/samsung/pinctrl-samsung.c')
| -rw-r--r-- | drivers/pinctrl/samsung/pinctrl-samsung.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/pinctrl/samsung/pinctrl-samsung.c b/drivers/pinctrl/samsung/pinctrl-samsung.c index 336e88d7bdb9..618945a0fd38 100644 --- a/drivers/pinctrl/samsung/pinctrl-samsung.c +++ b/drivers/pinctrl/samsung/pinctrl-samsung.c @@ -279,6 +279,32 @@ static int samsung_dt_node_to_map(struct pinctrl_dev *pctldev, return 0; } +#ifdef CONFIG_DEBUG_FS +/* Forward declaration which can be used by samsung_pin_dbg_show */ +static int samsung_pinconf_get(struct pinctrl_dev *pctldev, unsigned int pin, + unsigned long *config); +static const char * const reg_names[] = {"CON", "DAT", "PUD", "DRV", "CON_PDN", + "PUD_PDN"}; + +static void samsung_pin_dbg_show(struct pinctrl_dev *pctldev, + struct seq_file *s, unsigned int pin) +{ + enum pincfg_type cfg_type; + unsigned long config; + int ret; + + for (cfg_type = 0; cfg_type < PINCFG_TYPE_NUM; cfg_type++) { + config = PINCFG_PACK(cfg_type, 0); + ret = samsung_pinconf_get(pctldev, pin, &config); + if (ret < 0) + continue; + + seq_printf(s, " %s(0x%lx)", reg_names[cfg_type], + PINCFG_UNPACK_VALUE(config)); + } +} +#endif + /* list of pinctrl callbacks for the pinctrl core */ static const struct pinctrl_ops samsung_pctrl_ops = { .get_groups_count = samsung_get_group_count, @@ -286,6 +312,9 @@ static const struct pinctrl_ops samsung_pctrl_ops = { .get_group_pins = samsung_get_group_pins, .dt_node_to_map = samsung_dt_node_to_map, .dt_free_map = samsung_dt_free_map, +#ifdef CONFIG_DEBUG_FS + .pin_dbg_show = samsung_pin_dbg_show, +#endif }; /* check if the selector is a valid pin function selector */ |