diff options
Diffstat (limited to 'include/linux/pinctrl/pinconf.h')
| -rw-r--r-- | include/linux/pinctrl/pinconf.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/include/linux/pinctrl/pinconf.h b/include/linux/pinctrl/pinconf.h new file mode 100644 index 000000000000..477922cf043a --- /dev/null +++ b/include/linux/pinctrl/pinconf.h @@ -0,0 +1,97 @@ +/* + * Interface the pinconfig portions of the pinctrl subsystem + * + * Copyright (C) 2011 ST-Ericsson SA + * Written on behalf of Linaro for ST-Ericsson + * This interface is used in the core to keep track of pins. + * + * Author: Linus Walleij <linus.walleij@linaro.org> + * + * License terms: GNU General Public License (GPL) version 2 + */ +#ifndef __LINUX_PINCTRL_PINCONF_H +#define __LINUX_PINCTRL_PINCONF_H + +#ifdef CONFIG_PINCONF + +struct pinctrl_dev; +struct seq_file; + +/** + * struct pinconf_ops - pin config operations, to be implemented by + * pin configuration capable drivers. + * @pin_config_get: get the config of a certain pin, if the requested config + * is not available on this controller this should return -ENOTSUPP + * and if it is available but disabled it should return -EINVAL + * @pin_config_get: get the config of a certain pin + * @pin_config_set: configure an individual pin + * @pin_config_group_get: get configurations for an entire pin group + * @pin_config_group_set: configure all pins in a group + * @pin_config_dbg_show: optional debugfs display hook that will provide + * per-device info for a certain pin in debugfs + * @pin_config_group_dbg_show: optional debugfs display hook that will provide + * per-device info for a certain group in debugfs + */ +struct pinconf_ops { + int (*pin_config_get) (struct pinctrl_dev *pctldev, + unsigned pin, + unsigned long *config); + int (*pin_config_set) (struct pinctrl_dev *pctldev, + unsigned pin, + unsigned long config); + int (*pin_config_group_get) (struct pinctrl_dev *pctldev, + unsigned selector, + unsigned long *config); + int (*pin_config_group_set) (struct pinctrl_dev *pctldev, + unsigned selector, + unsigned long config); + void (*pin_config_dbg_show) (struct pinctrl_dev *pctldev, + struct seq_file *s, + unsigned offset); + void (*pin_config_group_dbg_show) (struct pinctrl_dev *pctldev, + struct seq_file *s, + unsigned selector); +}; + +extern int pin_config_get(const char *dev_name, const char *name, + unsigned long *config); +extern int pin_config_set(const char *dev_name, const char *name, + unsigned long config); +extern int pin_config_group_get(const char *dev_name, + const char *pin_group, + unsigned long *config); +extern int pin_config_group_set(const char *dev_name, + const char *pin_group, + unsigned long config); + +#else + +static inline int pin_config_get(const char *dev_name, const char *name, + unsigned long *config) +{ + return 0; +} + +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(const char *dev_name, + const char *pin_group, + unsigned long *config) +{ + return 0; +} + +static inline int pin_config_group_set(const char *dev_name, + const char *pin_group, + unsigned long config) +{ + return 0; +} + +#endif + +#endif /* __LINUX_PINCTRL_PINCONF_H */ |