pinctrl: pass name instead of device to pin_config_*
Obtaining a "struct pinctrl_dev *" is difficult for code not directly
related to the pinctrl subsystem. However, the device name of the pinctrl
device is fairly well known. So, modify pin_config_*() to take the device
name instead of the "struct pinctrl_dev *".
Signed-off-by: Stephen Warren <swarren@nvidia.com>
[rebased on top of refactoring code]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/Documentation/pinctrl.txt b/Documentation/pinctrl.txt
index f080643..44321d3 100644
--- a/Documentation/pinctrl.txt
+++ b/Documentation/pinctrl.txt
@@ -208,7 +208,7 @@
For example, a platform may do this:
-ret = pin_config_set(dev, "FOO_GPIO_PIN", PLATFORM_X_PULL_UP);
+ret = pin_config_set("foo-dev", "FOO_GPIO_PIN", PLATFORM_X_PULL_UP);
To pull up a pin to VDD. The pin configuration driver implements callbacks for
changing pin configuration in the pin controller ops like this:
diff --git a/drivers/pinctrl/pinconf.c b/drivers/pinctrl/pinconf.c
index 124762b..57dbb4b 100644
--- a/drivers/pinctrl/pinconf.c
+++ b/drivers/pinctrl/pinconf.c
@@ -39,17 +39,22 @@
/**
* pin_config_get() - get the configuration of a single pin parameter
- * @pctldev: pin controller device for this pin
+ * @dev_name: name of the pin controller device for this pin
* @name: name of the pin to get the config for
* @config: the config pointed to by this argument will be filled in with the
* current pin state, it can be used directly by drivers as a numeral, or
* it can be dereferenced to any struct.
*/
-int pin_config_get(struct pinctrl_dev *pctldev, const char *name,
+int pin_config_get(const char *dev_name, const char *name,
unsigned long *config)
{
+ struct pinctrl_dev *pctldev;
int pin;
+ pctldev = get_pinctrl_dev_from_dev(NULL, dev_name);
+ if (!pctldev)
+ return -EINVAL;
+
pin = pin_get_from_name(pctldev, name);
if (pin < 0)
return pin;
@@ -82,17 +87,22 @@
/**
* pin_config_set() - set the configuration of a single pin parameter
- * @pctldev: pin controller device for this pin
+ * @dev_name: name of pin controller device for this pin
* @name: name of the pin to set the config for
* @config: the config in this argument will contain the desired pin state, it
* can be used directly by drivers as a numeral, or it can be dereferenced
* to any struct.
*/
-int pin_config_set(struct pinctrl_dev *pctldev, const char *name,
+int pin_config_set(const char *dev_name, const char *name,
unsigned long config)
{
+ struct pinctrl_dev *pctldev;
int pin;
+ pctldev = get_pinctrl_dev_from_dev(NULL, dev_name);
+ if (!pctldev)
+ return -EINVAL;
+
pin = pin_get_from_name(pctldev, name);
if (pin < 0)
return pin;
@@ -101,12 +111,18 @@
}
EXPORT_SYMBOL(pin_config_set);
-int pin_config_group_get(struct pinctrl_dev *pctldev, const char *pin_group,
+int pin_config_group_get(const char *dev_name, const char *pin_group,
unsigned long *config)
{
- const struct pinconf_ops *ops = pctldev->desc->confops;
+ struct pinctrl_dev *pctldev;
+ const struct pinconf_ops *ops;
int selector;
+ pctldev = get_pinctrl_dev_from_dev(NULL, dev_name);
+ if (!pctldev)
+ return -EINVAL;
+ ops = pctldev->desc->confops;
+
if (!ops || !ops->pin_config_group_get) {
dev_err(pctldev->dev, "cannot get configuration for pin "
"group, missing group config get function in "
@@ -123,17 +139,24 @@
EXPORT_SYMBOL(pin_config_group_get);
-int pin_config_group_set(struct pinctrl_dev *pctldev, const char *pin_group,
+int pin_config_group_set(const char *dev_name, const char *pin_group,
unsigned long config)
{
- const struct pinctrl_ops *pctlops = pctldev->desc->pctlops;
- const struct pinconf_ops *ops = pctldev->desc->confops;
+ struct pinctrl_dev *pctldev;
+ const struct pinconf_ops *ops;
+ const struct pinctrl_ops *pctlops;
int selector;
const unsigned *pins;
unsigned num_pins;
int ret;
int i;
+ pctldev = get_pinctrl_dev_from_dev(NULL, dev_name);
+ if (!pctldev)
+ return -EINVAL;
+ ops = pctldev->desc->confops;
+ pctlops = pctldev->desc->pctlops;
+
if (!ops || (!ops->pin_config_group_set && !ops->pin_config_set)) {
dev_err(pctldev->dev, "cannot configure pin group, missing "
"config function in driver\n");
diff --git a/include/linux/pinctrl/pinconf.h b/include/linux/pinctrl/pinconf.h
index 8c2c88e..477922c 100644
--- a/include/linux/pinctrl/pinconf.h
+++ b/include/linux/pinctrl/pinconf.h
@@ -53,39 +53,39 @@
unsigned selector);
};
-extern int pin_config_get(struct pinctrl_dev *pctldev, const char *name,
+extern int pin_config_get(const char *dev_name, const char *name,
unsigned long *config);
-extern int pin_config_set(struct pinctrl_dev *pctldev, const char *name,
+extern int pin_config_set(const char *dev_name, const char *name,
unsigned long config);
-extern int pin_config_group_get(struct pinctrl_dev *pctldev,
+extern int pin_config_group_get(const char *dev_name,
const char *pin_group,
unsigned long *config);
-extern int pin_config_group_set(struct pinctrl_dev *pctldev,
+extern int pin_config_group_set(const char *dev_name,
const char *pin_group,
unsigned long config);
#else
-static inline int pin_config_get(struct pinctrl_dev *pctldev, const char *name,
+static inline int pin_config_get(const char *dev_name, const char *name,
unsigned long *config)
{
return 0;
}
-static inline int pin_config_set(struct pinctrl_dev *pctldev, const char *name,
+static inline int pin_config_set(const char *dev_name, const char *name,
unsigned long config)
{
return 0;
}
-static inline int pin_config_group_get(struct pinctrl_dev *pctldev,
+static inline int pin_config_group_get(const char *dev_name,
const char *pin_group,
unsigned long *config)
{
return 0;
}
-static inline int pin_config_group_set(struct pinctrl_dev *pctldev,
+static inline int pin_config_group_set(const char *dev_name,
const char *pin_group,
unsigned long config)
{