void pinconf_show_map(struct seq_file *s, struct pinctrl_map const *map)
{
struct pinctrl_dev *pctldev;
const struct pinconf_ops *confops;
int i;
pctldev = get_pinctrl_dev_from_devname(map->ctrl_dev_name);
if (pctldev)
confops = pctldev->desc->confops;
else
confops = NULL;
switch (map->type) {
case PIN_MAP_TYPE_CONFIGS_PIN:
seq_printf(s, "pin ");
break;
case PIN_MAP_TYPE_CONFIGS_GROUP:
seq_printf(s, "group ");
break;
default:
break;
}
seq_printf(s, "%s\n", map->data.configs.group_or_pin);
for (i = 0; i < map->data.configs.num_configs; i++) {
seq_printf(s, "config ");
if (confops && confops->pin_config_config_dbg_show)
confops->pin_config_config_dbg_show(pctldev, s,
map->data.configs.configs[i]);
else
seq_printf(s, "%08lx", map->data.configs.configs[i]);
seq_printf(s, "\n");
}
}
/**
* 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;
mutex_lock(&pinctrl_mutex);
pctldev = get_pinctrl_dev_from_devname(dev_name);
if (!pctldev) {
ret = -EINVAL;
goto unlock;
}
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(&pinctrl_mutex);
return ret;
}
void pinconf_show_map(struct seq_file *s, struct pinctrl_map const *map)
{
struct pinctrl_dev *pctldev;
pctldev = get_pinctrl_dev_from_devname(map->ctrl_dev_name);
switch (map->type) {
case PIN_MAP_TYPE_CONFIGS_PIN:
seq_printf(s, "pin ");
break;
case PIN_MAP_TYPE_CONFIGS_GROUP:
seq_printf(s, "group ");
break;
default:
break;
}
seq_printf(s, "%s\n", map->data.configs.group_or_pin);
pinconf_show_config(s, pctldev, map->data.configs.configs,
map->data.configs.num_configs);
}
int pin_config_group_get(const char *dev_name, const char *pin_group,
unsigned long *config)
{
struct pinctrl_dev *pctldev;
const struct pinconf_ops *ops;
int selector, ret;
pctldev = get_pinctrl_dev_from_devname(dev_name);
if (!pctldev) {
ret = -EINVAL;
return ret;
}
mutex_lock(&pctldev->mutex);
ops = pctldev->desc->confops;
if (!ops || !ops->pin_config_group_get) {
dev_dbg(pctldev->dev, "cannot get configuration for pin "
"group, missing group config get function in "
"driver\n");
ret = -ENOTSUPP;
goto unlock;
}
selector = pinctrl_get_group_selector(pctldev, pin_group);
if (selector < 0) {
ret = selector;
goto unlock;
}
ret = ops->pin_config_group_get(pctldev, selector, config);
unlock:
mutex_unlock(&pctldev->mutex);
return ret;
}
/**
* 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;
}
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;
mutex_lock(&pinctrl_mutex);
pctldev = get_pinctrl_dev_from_devname(dev_name);
if (!pctldev) {
ret = -EINVAL;
goto unlock;
}
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(&pinctrl_mutex);
return ret;
}
