a76edc89b1
We can add generic helpers for function handling for cases where the pin controller driver does not need to use static arrays. Signed-off-by: Tony Lindgren <tony@atomide.com> [Renamed the Kconfig item and moved things around] Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
169 lines
4.2 KiB
C
169 lines
4.2 KiB
C
/*
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* Internal interface between the core pin control system and the
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* pinmux portions
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*
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* Copyright (C) 2011 ST-Ericsson SA
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* Written on behalf of Linaro for ST-Ericsson
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* Based on bits of regulator core, gpio core and clk core
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*
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* Author: Linus Walleij <linus.walleij@linaro.org>
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*
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* License terms: GNU General Public License (GPL) version 2
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*/
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#ifdef CONFIG_PINMUX
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int pinmux_check_ops(struct pinctrl_dev *pctldev);
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int pinmux_validate_map(struct pinctrl_map const *map, int i);
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int pinmux_request_gpio(struct pinctrl_dev *pctldev,
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struct pinctrl_gpio_range *range,
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unsigned pin, unsigned gpio);
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void pinmux_free_gpio(struct pinctrl_dev *pctldev, unsigned pin,
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struct pinctrl_gpio_range *range);
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int pinmux_gpio_direction(struct pinctrl_dev *pctldev,
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struct pinctrl_gpio_range *range,
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unsigned pin, bool input);
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int pinmux_map_to_setting(struct pinctrl_map const *map,
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struct pinctrl_setting *setting);
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void pinmux_free_setting(struct pinctrl_setting const *setting);
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int pinmux_enable_setting(struct pinctrl_setting const *setting);
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void pinmux_disable_setting(struct pinctrl_setting const *setting);
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#else
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static inline int pinmux_check_ops(struct pinctrl_dev *pctldev)
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{
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return 0;
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}
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static inline int pinmux_validate_map(struct pinctrl_map const *map, int i)
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{
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return 0;
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}
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static inline int pinmux_request_gpio(struct pinctrl_dev *pctldev,
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struct pinctrl_gpio_range *range,
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unsigned pin, unsigned gpio)
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{
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return 0;
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}
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static inline void pinmux_free_gpio(struct pinctrl_dev *pctldev,
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unsigned pin,
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struct pinctrl_gpio_range *range)
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{
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}
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static inline int pinmux_gpio_direction(struct pinctrl_dev *pctldev,
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struct pinctrl_gpio_range *range,
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unsigned pin, bool input)
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{
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return 0;
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}
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static inline int pinmux_map_to_setting(struct pinctrl_map const *map,
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struct pinctrl_setting *setting)
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{
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return 0;
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}
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static inline void pinmux_free_setting(struct pinctrl_setting const *setting)
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{
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}
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static inline int pinmux_enable_setting(struct pinctrl_setting const *setting)
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{
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return 0;
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}
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static inline void pinmux_disable_setting(
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struct pinctrl_setting const *setting)
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{
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}
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#endif
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#if defined(CONFIG_PINMUX) && defined(CONFIG_DEBUG_FS)
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void pinmux_show_map(struct seq_file *s, struct pinctrl_map const *map);
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void pinmux_show_setting(struct seq_file *s,
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struct pinctrl_setting const *setting);
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void pinmux_init_device_debugfs(struct dentry *devroot,
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struct pinctrl_dev *pctldev);
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#else
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static inline void pinmux_show_map(struct seq_file *s,
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struct pinctrl_map const *map)
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{
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}
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static inline void pinmux_show_setting(struct seq_file *s,
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struct pinctrl_setting const *setting)
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{
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}
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static inline void pinmux_init_device_debugfs(struct dentry *devroot,
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struct pinctrl_dev *pctldev)
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{
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}
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#endif
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#ifdef CONFIG_GENERIC_PINMUX_FUNCTIONS
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/**
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* struct function_desc - generic function descriptor
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* @name: name of the function
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* @group_names: array of pin group names
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* @num_group_names: number of pin group names
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* @data: pin controller driver specific data
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*/
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struct function_desc {
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const char *name;
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const char **group_names;
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int num_group_names;
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void *data;
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};
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int pinmux_generic_get_function_count(struct pinctrl_dev *pctldev);
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const char *
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pinmux_generic_get_function_name(struct pinctrl_dev *pctldev,
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unsigned int selector);
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int pinmux_generic_get_function_groups(struct pinctrl_dev *pctldev,
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unsigned int selector,
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const char * const **groups,
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unsigned * const num_groups);
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struct function_desc *pinmux_generic_get_function(struct pinctrl_dev *pctldev,
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unsigned int selector);
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int pinmux_generic_add_function(struct pinctrl_dev *pctldev,
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const char *name,
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const char **groups,
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unsigned const num_groups,
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void *data);
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int pinmux_generic_remove_function(struct pinctrl_dev *pctldev,
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unsigned int selector);
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static inline int
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pinmux_generic_remove_last_function(struct pinctrl_dev *pctldev)
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{
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return pinmux_generic_remove_function(pctldev,
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pctldev->num_functions - 1);
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}
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void pinmux_generic_free_functions(struct pinctrl_dev *pctldev);
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#else
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static inline void pinmux_generic_free_functions(struct pinctrl_dev *pctldev)
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{
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}
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#endif /* CONFIG_GENERIC_PINMUX_FUNCTIONS */
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