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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.c67
1 files changed, 22 insertions, 45 deletions
diff --git a/drivers/pinctrl/pinmux.c b/drivers/pinctrl/pinmux.c
index 9301a7a95eff..0ef01ee2835f 100644
--- a/drivers/pinctrl/pinmux.c
+++ b/drivers/pinctrl/pinmux.c
@@ -314,14 +314,11 @@ int pinmux_map_to_setting(struct pinctrl_map const *map,
{
struct pinctrl_dev *pctldev = setting->pctldev;
const struct pinmux_ops *pmxops = pctldev->desc->pmxops;
- const struct pinctrl_ops *pctlops = pctldev->desc->pctlops;
char const * const *groups;
unsigned num_groups;
int ret;
const char *group;
int i;
- const unsigned *pins;
- unsigned num_pins;
if (!pmxops) {
dev_err(pctldev->dev, "does not support mux function\n");
@@ -376,53 +373,12 @@ int pinmux_map_to_setting(struct pinctrl_map const *map,
}
setting->data.mux.group = ret;
- ret = pctlops->get_group_pins(pctldev, setting->data.mux.group, &pins,
- &num_pins);
- if (ret) {
- dev_err(pctldev->dev,
- "could not get pins for device %s group selector %d\n",
- pinctrl_dev_get_name(pctldev), setting->data.mux.group);
- return -ENODEV;
- }
-
- /* Try to allocate all pins in this group, one by one */
- for (i = 0; i < num_pins; i++) {
- ret = pin_request(pctldev, pins[i], map->dev_name, NULL);
- if (ret) {
- dev_err(pctldev->dev,
- "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 */
- for (; i >= 0; i--)
- pin_free(pctldev, pins[i], NULL);
- return -ENODEV;
- }
- }
-
return 0;
}
void pinmux_free_setting(struct pinctrl_setting const *setting)
{
- struct pinctrl_dev *pctldev = setting->pctldev;
- const struct pinctrl_ops *pctlops = pctldev->desc->pctlops;
- const unsigned *pins;
- unsigned num_pins;
- int ret;
- int i;
-
- ret = pctlops->get_group_pins(pctldev, setting->data.mux.group,
- &pins, &num_pins);
- if (ret) {
- dev_err(pctldev->dev,
- "could not get pins for device %s group selector %d\n",
- pinctrl_dev_get_name(pctldev), setting->data.mux.group);
- return;
- }
-
- for (i = 0; i < num_pins; i++)
- pin_free(pctldev, pins[i], NULL);
+ /* This function is currently unused */
}
int pinmux_enable_setting(struct pinctrl_setting const *setting)
@@ -446,6 +402,22 @@ int pinmux_enable_setting(struct pinctrl_setting const *setting)
num_pins = 0;
}
+ /* Try to allocate all pins in this group, one by one */
+ for (i = 0; i < num_pins; i++) {
+ ret = pin_request(pctldev, pins[i], setting->dev_name, NULL);
+ if (ret) {
+ dev_err(pctldev->dev,
+ "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 */
+ for (; i >= 0; i--)
+ pin_free(pctldev, pins[i], NULL);
+ return -ENODEV;
+ }
+ }
+
+ /* Now that we have acquired the pins, encode the mux setting */
for (i = 0; i < num_pins; i++) {
desc = pin_desc_get(pctldev, pins[i]);
if (desc == NULL) {
@@ -482,6 +454,7 @@ void pinmux_disable_setting(struct pinctrl_setting const *setting)
num_pins = 0;
}
+ /* Flag the descs that no setting is active */
for (i = 0; i < num_pins; i++) {
desc = pin_desc_get(pctldev, pins[i]);
if (desc == NULL) {
@@ -493,6 +466,10 @@ void pinmux_disable_setting(struct pinctrl_setting const *setting)
desc->mux_setting = NULL;
}
+ /* And release the pins */
+ for (i = 0; i < num_pins; i++)
+ pin_free(pctldev, pins[i], NULL);
+
if (ops->disable)
ops->disable(pctldev, setting->data.mux.func, setting->data.mux.group);
}