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Additionally to the generic DT parameters, allow drivers to provide driver-specific DT parameters to be used with the generic parser infrastructure. To achieve this 'struct pinctrl_desc' is extended to pass custom pinconf option to the core. In order to pass this kind of information, the related data structures - 'struct pinconf_generic_dt_params', 'pin_config_item' - are moved from pinconf internals to the pinconf-generic header. Additionally pinconfg-generic is refactored to not only iterate over the generic pinconf parameters but also take the parameters into account that are provided through the driver's 'struct pinctrl_desc'. In particular 'pinconf_generic_parse_dt_config()' and 'pinconf_generic_dump' helpers are split into two parts each. In order to have a more generic helper that can be used to process the generic parameters as well as the driver-specific ones. v2: - fix typo - add missing documentation for @conf_items member in struct - rebase to pinctrl/devel: conflict in abx500 - rename _pinconf_generic_dump() to pinconf_generic_dump_one() - removed '_' from _parse_dt_cfg() - removed BUG_ONs, error condition is handled in if statements - removed pinconf_generic_dump_group() & pinconf_generic_dump_pin helpers - fixed up corresponding call sites - renamed pinconf_generic_dump() to pinconf_generic_dump_pins() - added kernel-doc to pinconf_generic_dump_pins() - add kernel-doc - more verbose commit message Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com> Tested-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
124 lines
3.1 KiB
C
124 lines
3.1 KiB
C
/*
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* Internal interface between the core pin control system and the
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* pin config 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_PINCONF
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int pinconf_check_ops(struct pinctrl_dev *pctldev);
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int pinconf_validate_map(struct pinctrl_map const *map, int i);
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int pinconf_map_to_setting(struct pinctrl_map const *map,
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struct pinctrl_setting *setting);
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void pinconf_free_setting(struct pinctrl_setting const *setting);
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int pinconf_apply_setting(struct pinctrl_setting const *setting);
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/*
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* You will only be interested in these if you're using PINCONF
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* so don't supply any stubs for these.
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*/
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int pin_config_get_for_pin(struct pinctrl_dev *pctldev, unsigned pin,
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unsigned long *config);
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int pin_config_group_get(const char *dev_name, const char *pin_group,
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unsigned long *config);
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#else
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static inline int pinconf_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 pinconf_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 pinconf_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 pinconf_free_setting(struct pinctrl_setting const *setting)
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{
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}
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static inline int pinconf_apply_setting(struct pinctrl_setting const *setting)
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{
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return 0;
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}
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#endif
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#if defined(CONFIG_PINCONF) && defined(CONFIG_DEBUG_FS)
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void pinconf_show_map(struct seq_file *s, struct pinctrl_map const *map);
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void pinconf_show_setting(struct seq_file *s,
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struct pinctrl_setting const *setting);
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void pinconf_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 pinconf_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 pinconf_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 pinconf_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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/*
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* The following functions are available if the driver uses the generic
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* pin config.
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*/
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#if defined(CONFIG_GENERIC_PINCONF) && defined(CONFIG_DEBUG_FS)
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void pinconf_generic_dump_pins(struct pinctrl_dev *pctldev,
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struct seq_file *s, const char *gname,
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unsigned pin);
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void pinconf_generic_dump_config(struct pinctrl_dev *pctldev,
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struct seq_file *s, unsigned long config);
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#else
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static inline void pinconf_generic_dump_pins(struct pinctrl_dev *pctldev,
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struct seq_file *s,
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const char *gname, unsigned pin)
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{
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return;
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}
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static inline void pinconf_generic_dump_config(struct pinctrl_dev *pctldev,
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struct seq_file *s,
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unsigned long config)
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{
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return;
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}
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#endif
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#if defined(CONFIG_GENERIC_PINCONF) && defined(CONFIG_OF)
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int pinconf_generic_parse_dt_config(struct device_node *np,
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struct pinctrl_dev *pctldev,
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unsigned long **configs,
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unsigned int *nconfigs);
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#endif
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