pinctrl: rip out the direct pinconf API

From the inception ot the pin config API there has been the
possibility to get a handle at a pin directly and configure
its electrical characteristics. For this reason we had:

int pin_config_get(const char *dev_name, const char *name,
               unsigned long *config);
int pin_config_set(const char *dev_name, const char *name,
               unsigned long config);
int pin_config_group_get(const char *dev_name,
               const char *pin_group,
               unsigned long *config);
int pin_config_group_set(const char *dev_name,
               const char *pin_group,
               unsigned long config);

After the introduction of the pin control states that will
control pins associated with devices, and its subsequent
introduction to the device core, as well as the
introduction of pin control hogs that can set up states on
boot and optionally also at sleep, this direct pin control
API is a thing of the past.

As could be expected, it has zero in-kernel users.
Let's delete this API and make our world simpler.

Reported-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 0 insertions, 174 deletions

diff --git a/drivers/pinctrl/pinconf.c b/drivers/pinctrl/pinconf.c
index 694c3ace452..e875f21a590 100644
--- a/drivers/pinctrl/pinconf.c
+++ b/drivers/pinctrl/pinconf.c
@@ -75,98 +75,6 @@ int pin_config_get_for_pin(struct pinctrl_dev *pctldev, unsigned pin,
 	return ops->pin_config_get(pctldev, pin, config);
 }
 
-/**
- * pin_config_get() - get the configuration of a single pin parameter
- * @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(const char *dev_name, const char *name,
-			  unsigned long *config)
-{
-	struct pinctrl_dev *pctldev;
-	int pin;
-
-	pctldev = get_pinctrl_dev_from_devname(dev_name);
-	if (!pctldev) {
-		pin = -EINVAL;
-		return pin;
-	}
-
-	mutex_lock(&pctldev->mutex);
-
-	pin = pin_get_from_name(pctldev, name);
-	if (pin < 0)
-		goto unlock;
-
-	pin = pin_config_get_for_pin(pctldev, pin, config);
-
-unlock:
-	mutex_unlock(&pctldev->mutex);
-	return pin;
-}
-EXPORT_SYMBOL(pin_config_get);
-
-static int pin_config_set_for_pin(struct pinctrl_dev *pctldev, unsigned pin,
-			   unsigned long config)
-{
-	const struct pinconf_ops *ops = pctldev->desc->confops;
-	int ret;
-
-	if (!ops || !ops->pin_config_set) {
-		dev_err(pctldev->dev, "cannot configure pin, missing "
-			"config function in driver\n");
-		return -EINVAL;
-	}
-
-	ret = ops->pin_config_set(pctldev, pin, config);
-	if (ret) {
-		dev_err(pctldev->dev,
-			"unable to set pin configuration on pin %d\n", pin);
-		return ret;
-	}
-
-	return 0;
-}
-
-/**
- * pin_config_set() - set the configuration of a single pin parameter
- * @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(const char *dev_name, const char *name,
-		   unsigned long config)
-{
-	struct pinctrl_dev *pctldev;
-	int pin, ret;
-
-	pctldev = get_pinctrl_dev_from_devname(dev_name);
-	if (!pctldev) {
-		ret = -EINVAL;
-		return ret;
-	}
-
-	mutex_lock(&pctldev->mutex);
-
-	pin = pin_get_from_name(pctldev, name);
-	if (pin < 0) {
-		ret = pin;
-		goto unlock;
-	}
-
-	ret = pin_config_set_for_pin(pctldev, pin, config);
-
-unlock:
-	mutex_unlock(&pctldev->mutex);
-	return ret;
-}
-EXPORT_SYMBOL(pin_config_set);
-
 int pin_config_group_get(const char *dev_name, const char *pin_group,
 			 unsigned long *config)
 {
@@ -204,88 +112,6 @@ unlock:
 	mutex_unlock(&pctldev->mutex);
 	return ret;
 }
-EXPORT_SYMBOL(pin_config_group_get);
-
-int pin_config_group_set(const char *dev_name, const char *pin_group,
-			 unsigned long config)
-{
-	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_devname(dev_name);
-	if (!pctldev) {
-		ret = -EINVAL;
-		return ret;
-	}
-
-	mutex_lock(&pctldev->mutex);
-
-	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");
-		ret = -EINVAL;
-		goto unlock;
-	}
-
-	selector = pinctrl_get_group_selector(pctldev, pin_group);
-	if (selector < 0) {
-		ret = selector;
-		goto unlock;
-	}
-
-	ret = pctlops->get_group_pins(pctldev, selector, &pins, &num_pins);
-	if (ret) {
-		dev_err(pctldev->dev, "cannot configure pin group, error "
-			"getting pins\n");
-		goto unlock;
-	}
-
-	/*
-	 * If the pin controller supports handling entire groups we use that
-	 * capability.
-	 */
-	if (ops->pin_config_group_set) {
-		ret = ops->pin_config_group_set(pctldev, selector, config);
-		/*
-		 * If the pin controller prefer that a certain group be handled
-		 * pin-by-pin as well, it returns -EAGAIN.
-		 */
-		if (ret != -EAGAIN)
-			goto unlock;
-	}
-
-	/*
-	 * If the controller cannot handle entire groups, we configure each pin
-	 * individually.
-	 */
-	if (!ops->pin_config_set) {
-		ret = 0;
-		goto unlock;
-	}
-
-	for (i = 0; i < num_pins; i++) {
-		ret = ops->pin_config_set(pctldev, pins[i], config);
-		if (ret < 0)
-			goto unlock;
-	}
-
-	ret = 0;
-
-unlock:
-	mutex_unlock(&pctldev->mutex);
-
-	return ret;
-}
-EXPORT_SYMBOL(pin_config_group_set);
 
 int pinconf_map_to_setting(struct pinctrl_map const *map,
 			  struct pinctrl_setting *setting)