summaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
authorStephen Warren <swarren@nvidia.com>2011-12-15 16:57:17 -0700
committerLinus Walleij <linus.walleij@linaro.org>2012-01-03 09:10:07 +0100
commit43699dea1ea21a0d5786317a794cb2ba27a6f4fe (patch)
tree6a1f26cce9cfe04ac93cd62005c14759722ffb74 /drivers
parent63fd5984a9b2214cba7dd7dd7b5a75cf40dde39f (diff)
downloadop-kernel-dev-43699dea1ea21a0d5786317a794cb2ba27a6f4fe.zip
op-kernel-dev-43699dea1ea21a0d5786317a794cb2ba27a6f4fe.tar.gz
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/pinctrl/pinconf.c41
1 files changed, 32 insertions, 9 deletions
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 @@ int pin_config_get_for_pin(struct pinctrl_dev *pctldev, unsigned pin,
/**
* 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 @@ int pin_config_set_for_pin(struct pinctrl_dev *pctldev, unsigned pin,
/**
* 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 @@ 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 "
@@ -123,17 +139,24 @@ 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");
OpenPOWER on IntegriCloud