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path: root/drivers/pinctrl/pinmux.c
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Diffstat (limited to 'drivers/pinctrl/pinmux.c')
-rw-r--r--drivers/pinctrl/pinmux.c37
1 files changed, 27 insertions, 10 deletions
diff --git a/drivers/pinctrl/pinmux.c b/drivers/pinctrl/pinmux.c
index 7cd0c7d0f2cf..2df753508eca 100644
--- a/drivers/pinctrl/pinmux.c
+++ b/drivers/pinctrl/pinmux.c
@@ -42,9 +42,10 @@ int pinmux_check_ops(struct pinctrl_dev *pctldev)
!ops->get_function_name ||
!ops->get_function_groups ||
!ops->enable ||
- !ops->disable)
+ !ops->disable) {
+ dev_err(pctldev->dev, "pinmux ops lacks necessary functions\n");
return -EINVAL;
-
+ }
/* Check that all functions registered have names */
nfuncs = ops->get_functions_count(pctldev);
while (selector < nfuncs) {
@@ -143,7 +144,7 @@ static int pin_request(struct pinctrl_dev *pctldev,
status = 0;
if (status) {
- dev_err(pctldev->dev, "->request on device %s failed for pin %d\n",
+ dev_err(pctldev->dev, "request on device %s failed for pin %d\n",
pctldev->desc->name, pin);
module_put(pctldev->owner);
}
@@ -330,17 +331,26 @@ int pinmux_map_to_setting(struct pinctrl_map const *map,
}
ret = pinmux_func_name_to_selector(pctldev, map->data.mux.function);
- if (ret < 0)
+ if (ret < 0) {
+ dev_err(pctldev->dev, "invalid function %s in map table\n",
+ map->data.mux.function);
return ret;
+ }
setting->data.mux.func = ret;
ret = pmxops->get_function_groups(pctldev, setting->data.mux.func,
&groups, &num_groups);
- if (ret < 0)
+ if (ret < 0) {
+ dev_err(pctldev->dev, "can't query groups for function %s\n",
+ map->data.mux.function);
return ret;
- if (!num_groups)
+ }
+ if (!num_groups) {
+ dev_err(pctldev->dev,
+ "function %s can't be selected on any group\n",
+ map->data.mux.function);
return -EINVAL;
-
+ }
if (map->data.mux.group) {
bool found = false;
group = map->data.mux.group;
@@ -350,15 +360,22 @@ int pinmux_map_to_setting(struct pinctrl_map const *map,
break;
}
}
- if (!found)
+ if (!found) {
+ dev_err(pctldev->dev,
+ "invalid group \"%s\" for function \"%s\"\n",
+ group, map->data.mux.function);
return -EINVAL;
+ }
} else {
group = groups[0];
}
ret = pinctrl_get_group_selector(pctldev, group);
- if (ret < 0)
+ if (ret < 0) {
+ dev_err(pctldev->dev, "invalid group %s in map table\n",
+ map->data.mux.group);
return ret;
+ }
setting->data.mux.group = ret;
ret = pctlops->get_group_pins(pctldev, setting->data.mux.group, &pins,
@@ -375,7 +392,7 @@ int pinmux_map_to_setting(struct pinctrl_map const *map,
ret = pin_request(pctldev, pins[i], map->dev_name, NULL);
if (ret) {
dev_err(pctldev->dev,
- "could not get request pin %d on device %s\n",
+ "could not request pin %d on device %s\n",
pins[i], pinctrl_dev_get_name(pctldev));
/* On error release all taken pins */
i--; /* this pin just failed */