diff options
Diffstat (limited to 'include/linux/pinctrl')
| -rw-r--r-- | include/linux/pinctrl/consumer.h | 77 | ||||
| -rw-r--r-- | include/linux/pinctrl/devinfo.h | 4 | ||||
| -rw-r--r-- | include/linux/pinctrl/pinconf-generic.h | 37 | ||||
| -rw-r--r-- | include/linux/pinctrl/pinconf.h | 2 | ||||
| -rw-r--r-- | include/linux/pinctrl/pinctrl.h | 4 |
5 files changed, 68 insertions, 56 deletions
diff --git a/include/linux/pinctrl/consumer.h b/include/linux/pinctrl/consumer.h index 4aad3cea69a..18eccefea06 100644 --- a/include/linux/pinctrl/consumer.h +++ b/include/linux/pinctrl/consumer.h @@ -40,6 +40,25 @@ extern int pinctrl_select_state(struct pinctrl *p, struct pinctrl_state *s); extern struct pinctrl * __must_check devm_pinctrl_get(struct device *dev); extern void devm_pinctrl_put(struct pinctrl *p); +#ifdef CONFIG_PM +extern int pinctrl_pm_select_default_state(struct device *dev); +extern int pinctrl_pm_select_sleep_state(struct device *dev); +extern int pinctrl_pm_select_idle_state(struct device *dev); +#else +static inline int pinctrl_pm_select_default_state(struct device *dev) +{ + return 0; +} +static inline int pinctrl_pm_select_sleep_state(struct device *dev) +{ + return 0; +} +static inline int pinctrl_pm_select_idle_state(struct device *dev) +{ + return 0; +} +#endif + #else /* !CONFIG_PINCTRL */ static inline int pinctrl_request_gpio(unsigned gpio) @@ -92,6 +111,21 @@ static inline void devm_pinctrl_put(struct pinctrl *p) { } +static inline int pinctrl_pm_select_default_state(struct device *dev) +{ + return 0; +} + +static inline int pinctrl_pm_select_sleep_state(struct device *dev) +{ + return 0; +} + +static inline int pinctrl_pm_select_idle_state(struct device *dev) +{ + return 0; +} + #endif /* CONFIG_PINCTRL */ static inline struct pinctrl * __must_check pinctrl_get_select( @@ -158,47 +192,4 @@ static inline struct pinctrl * __must_check devm_pinctrl_get_select_default( return devm_pinctrl_get_select(dev, PINCTRL_STATE_DEFAULT); } -#ifdef CONFIG_PINCONF - -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_CONSUMER_H */ diff --git a/include/linux/pinctrl/devinfo.h b/include/linux/pinctrl/devinfo.h index 6e5f8a985ea..281cb91ddcf 100644 --- a/include/linux/pinctrl/devinfo.h +++ b/include/linux/pinctrl/devinfo.h @@ -28,6 +28,10 @@ struct dev_pin_info { struct pinctrl *p; struct pinctrl_state *default_state; +#ifdef CONFIG_PM + struct pinctrl_state *sleep_state; + struct pinctrl_state *idle_state; +#endif }; extern int pinctrl_bind_pins(struct device *dev); diff --git a/include/linux/pinctrl/pinconf-generic.h b/include/linux/pinctrl/pinconf-generic.h index 72474e18f1e..bf7e989abcb 100644 --- a/include/linux/pinctrl/pinconf-generic.h +++ b/include/linux/pinctrl/pinconf-generic.h @@ -29,25 +29,38 @@ * if for example some other pin is going to drive the signal connected * to it for a while. Pins used for input are usually always high * impedance. + * @PIN_CONFIG_BIAS_BUS_HOLD: the pin will be set to weakly latch so that it + * weakly drives the last value on a tristate bus, also known as a "bus + * holder", "bus keeper" or "repeater". This allows another device on the + * bus to change the value by driving the bus high or low and switching to + * tristate. The argument is ignored. * @PIN_CONFIG_BIAS_PULL_UP: the pin will be pulled up (usually with high * impedance to VDD). If the argument is != 0 pull-up is enabled, - * if it is 0, pull-up is disabled. + * if it is 0, pull-up is total, i.e. the pin is connected to VDD. * @PIN_CONFIG_BIAS_PULL_DOWN: the pin will be pulled down (usually with high * impedance to GROUND). If the argument is != 0 pull-down is enabled, - * if it is 0, pull-down is disabled. + * if it is 0, pull-down is total, i.e. the pin is connected to GROUND. + * @PIN_CONFIG_BIAS_PULL_PIN_DEFAULT: the pin will be pulled up or down based + * on embedded knowledge of the controller hardware, like current mux + * function. The pull direction and possibly strength too will normally + * be decided completely inside the hardware block and not be readable + * from the kernel side. + * If the argument is != 0 pull up/down is enabled, if it is 0, the + * configuration is ignored. The proper way to disable it is to use + * @PIN_CONFIG_BIAS_DISABLE. * @PIN_CONFIG_DRIVE_PUSH_PULL: the pin will be driven actively high and * low, this is the most typical case and is typically achieved with two - * active transistors on the output. Sending this config will enabale + * active transistors on the output. Setting this config will enable * push-pull mode, the argument is ignored. * @PIN_CONFIG_DRIVE_OPEN_DRAIN: the pin will be driven with open drain (open * collector) which means it is usually wired with other output ports - * which are then pulled up with an external resistor. Sending this - * config will enabale open drain mode, the argument is ignored. + * which are then pulled up with an external resistor. Setting this + * config will enable open drain mode, the argument is ignored. * @PIN_CONFIG_DRIVE_OPEN_SOURCE: the pin will be driven with open source - * (open emitter). Sending this config will enabale open drain mode, the + * (open emitter). Setting this config will enable open drain mode, the * argument is ignored. - * @PIN_CONFIG_DRIVE_STRENGTH: the pin will output the current passed as - * argument. The argument is in mA. + * @PIN_CONFIG_DRIVE_STRENGTH: the pin will sink or source at most the current + * passed as argument. The argument is in mA. * @PIN_CONFIG_INPUT_SCHMITT_ENABLE: control schmitt-trigger mode on the pin. * If the argument != 0, schmitt-trigger mode is enabled. If it's 0, * schmitt-trigger mode is disabled. @@ -57,14 +70,14 @@ * setting pins to this mode. * @PIN_CONFIG_INPUT_DEBOUNCE: this will configure the pin to debounce mode, * which means it will wait for signals to settle when reading inputs. The - * argument gives the debounce time on a custom format. Setting the + * argument gives the debounce time in usecs. Setting the * argument to zero turns debouncing off. * @PIN_CONFIG_POWER_SOURCE: if the pin can select between different power * supplies, the argument to this parameter (on a custom format) tells * the driver which alternative power source to use. * @PIN_CONFIG_SLEW_RATE: if the pin can select slew rate, the argument to - * this parameter (on a custom format) tells the driver which alternative - * slew rate to use. + * this parameter (on a custom format) tells the driver which alternative + * slew rate to use. * @PIN_CONFIG_LOW_POWER_MODE: this will configure the pin for low power * operation, if several modes of operation are supported these can be * passed in the argument on a custom form, else just use argument 1 @@ -78,8 +91,10 @@ enum pin_config_param { PIN_CONFIG_BIAS_DISABLE, PIN_CONFIG_BIAS_HIGH_IMPEDANCE, + PIN_CONFIG_BIAS_BUS_HOLD, PIN_CONFIG_BIAS_PULL_UP, PIN_CONFIG_BIAS_PULL_DOWN, + PIN_CONFIG_BIAS_PULL_PIN_DEFAULT, PIN_CONFIG_DRIVE_PUSH_PULL, PIN_CONFIG_DRIVE_OPEN_DRAIN, PIN_CONFIG_DRIVE_OPEN_SOURCE, diff --git a/include/linux/pinctrl/pinconf.h b/include/linux/pinctrl/pinconf.h index 1ad4f31ef6b..f6998692bdc 100644 --- a/include/linux/pinctrl/pinconf.h +++ b/include/linux/pinctrl/pinconf.h @@ -30,7 +30,7 @@ struct seq_file; * @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_group_dbg_set: optional debugfs to modify a pin configuration + * @pin_config_dbg_parse_modify: optional debugfs to modify a pin configuration * @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 diff --git a/include/linux/pinctrl/pinctrl.h b/include/linux/pinctrl/pinctrl.h index 2c2a9e8d857..5979147d2bd 100644 --- a/include/linux/pinctrl/pinctrl.h +++ b/include/linux/pinctrl/pinctrl.h @@ -49,7 +49,8 @@ struct pinctrl_pin_desc { * @name: a name for the chip in this range * @id: an ID number for the chip in this range * @base: base offset of the GPIO range - * @pin_base: base pin number of the GPIO range + * @pin_base: base pin number of the GPIO range if pins == NULL + * @pins: enumeration of pins in GPIO range or NULL * @npins: number of pins in the GPIO range, including the base number * @gc: an optional pointer to a gpio_chip */ @@ -59,6 +60,7 @@ struct pinctrl_gpio_range { unsigned int id; unsigned int base; unsigned int pin_base; + unsigned const *pins; unsigned int npins; struct gpio_chip *gc; }; |