diff options
Diffstat (limited to 'drivers/pinctrl/devicetree.c')
| -rw-r--r-- | drivers/pinctrl/devicetree.c | 31 |
1 files changed, 25 insertions, 6 deletions
diff --git a/drivers/pinctrl/devicetree.c b/drivers/pinctrl/devicetree.c index 260908480075..0e5c9f14a706 100644 --- a/drivers/pinctrl/devicetree.c +++ b/drivers/pinctrl/devicetree.c @@ -42,7 +42,8 @@ static void dt_free_map(struct pinctrl_dev *pctldev, { if (pctldev) { const struct pinctrl_ops *ops = pctldev->desc->pctlops; - ops->dt_free_map(pctldev, map, num_maps); + if (ops->dt_free_map) + ops->dt_free_map(pctldev, map, num_maps); } else { /* There is no pctldev for PIN_MAP_TYPE_DUMMY_STATE */ kfree(map); @@ -100,11 +101,12 @@ struct pinctrl_dev *of_pinctrl_get(struct device_node *np) return get_pinctrl_dev_from_of_node(np); } -static int dt_to_map_one_config(struct pinctrl *p, const char *statename, +static int dt_to_map_one_config(struct pinctrl *p, + struct pinctrl_dev *pctldev, + const char *statename, struct device_node *np_config) { struct device_node *np_pctldev; - struct pinctrl_dev *pctldev; const struct pinctrl_ops *ops; int ret; struct pinctrl_map *map; @@ -121,7 +123,8 @@ static int dt_to_map_one_config(struct pinctrl *p, const char *statename, /* OK let's just assume this will appear later then */ return -EPROBE_DEFER; } - pctldev = get_pinctrl_dev_from_of_node(np_pctldev); + if (!pctldev) + pctldev = get_pinctrl_dev_from_of_node(np_pctldev); if (pctldev) break; /* Do not defer probing of hogs (circular loop) */ @@ -166,7 +169,22 @@ static int dt_remember_dummy_state(struct pinctrl *p, const char *statename) return dt_remember_or_free_map(p, statename, NULL, map, 1); } -int pinctrl_dt_to_map(struct pinctrl *p) +bool pinctrl_dt_has_hogs(struct pinctrl_dev *pctldev) +{ + struct device_node *np; + struct property *prop; + int size; + + np = pctldev->dev->of_node; + if (!np) + return false; + + prop = of_find_property(np, "pinctrl-0", &size); + + return prop ? true : false; +} + +int pinctrl_dt_to_map(struct pinctrl *p, struct pinctrl_dev *pctldev) { struct device_node *np = p->dev->of_node; int state, ret; @@ -233,7 +251,8 @@ int pinctrl_dt_to_map(struct pinctrl *p) } /* Parse the node */ - ret = dt_to_map_one_config(p, statename, np_config); + ret = dt_to_map_one_config(p, pctldev, statename, + np_config); of_node_put(np_config); if (ret < 0) goto err; |