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Subject[PATCH 2/2] pinctrl: Pass name instead of device to pin_config_*
Date
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>
---
drivers/pinctrl/pinconf.c | 43 ++++++++++++++++++++++++++++++--------
include/linux/pinctrl/pinconf.h | 16 +++++++-------
2 files changed, 42 insertions(+), 17 deletions(-)
diff --git a/drivers/pinctrl/pinconf.c b/drivers/pinctrl/pinconf.c
index 3ddd4e9..38c5b41 100644
--- a/drivers/pinctrl/pinconf.c
+++ b/drivers/pinctrl/pinconf.c
@@ -31,12 +31,18 @@
* 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)
{
- const struct pinconf_ops *ops = pctldev->desc->confops;
+ struct pinctrl_dev *pctldev;
+ const struct pinconf_ops *ops;
int pin;

+ pctldev = get_pinctrl_dev_from_dev(NULL, dev_name);
+ if (!pctldev)
+ return -EINVAL;
+ ops = pctldev->desc->confops;
+
pin = pin_get_from_name(pctldev, name);
if (pin < 0)
return pin;
@@ -59,13 +65,19 @@ EXPORT_SYMBOL(pin_config_get);
* 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)
{
- const struct pinconf_ops *ops = pctldev->desc->confops;
+ struct pinctrl_dev *pctldev;
+ const struct pinconf_ops *ops;
int pin;
int ret;

+ pctldev = get_pinctrl_dev_from_dev(NULL, dev_name);
+ if (!pctldev)
+ return -EINVAL;
+ ops = pctldev->desc->confops;
+
pin = pin_get_from_name(pctldev, name);
if (pin < 0)
return pin;
@@ -87,12 +99,18 @@ int pin_config_set(struct pinctrl_dev *pctldev, const char *name,
}
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 "
@@ -109,17 +127,24 @@ int pin_config_group_get(struct pinctrl_dev *pctldev, const char *pin_group,
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 @@ struct pinconf_ops {
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)
{
--
1.7.0.4


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