diff options
Diffstat (limited to 'include/media/ir-core.h')
| -rw-r--r-- | include/media/ir-core.h | 181 |
1 files changed, 146 insertions, 35 deletions
diff --git a/include/media/ir-core.h b/include/media/ir-core.h index 61c223bc3953..eb7fddf8f607 100644 --- a/include/media/ir-core.h +++ b/include/media/ir-core.h @@ -1,6 +1,8 @@ /* * Remote Controller core header * + * Copyright (C) 2009-2010 by Mauro Carvalho Chehab <mchehab@redhat.com> + * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation version 2 of the License. @@ -14,61 +16,170 @@ #ifndef _IR_CORE #define _IR_CORE -#include <linux/input.h> #include <linux/spinlock.h> +#include <linux/kfifo.h> +#include <linux/time.h> +#include <linux/timer.h> +#include <media/rc-map.h> extern int ir_core_debug; #define IR_dprintk(level, fmt, arg...) if (ir_core_debug >= level) \ printk(KERN_DEBUG "%s: " fmt , __func__, ## arg) -#define IR_TYPE_UNKNOWN 0 -#define IR_TYPE_RC5 (1 << 0) /* Philips RC5 protocol */ -#define IR_TYPE_PD (1 << 1) /* Pulse distance encoded IR */ -#define IR_TYPE_NEC (1 << 2) -#define IR_TYPE_OTHER (((u64)1) << 63l) - -struct ir_scancode { - u16 scancode; - u32 keycode; -}; - -struct ir_scancode_table { - struct ir_scancode *scan; - int size; - u64 ir_type; - spinlock_t lock; +enum rc_driver_type { + RC_DRIVER_SCANCODE = 0, /* Driver or hardware generates a scancode */ + RC_DRIVER_IR_RAW, /* Needs a Infra-Red pulse/space decoder */ }; +/** + * struct ir_dev_props - Allow caller drivers to set special properties + * @driver_type: specifies if the driver or hardware have already a decoder, + * or if it needs to use the IR raw event decoders to produce a scancode + * @allowed_protos: bitmask with the supported IR_TYPE_* protocols + * @scanmask: some hardware decoders are not capable of providing the full + * scancode to the application. As this is a hardware limit, we can't do + * anything with it. Yet, as the same keycode table can be used with other + * devices, a mask is provided to allow its usage. Drivers should generally + * leave this field in blank + * @timeout: optional time after which device stops sending data + * @min_timeout: minimum timeout supported by device + * @max_timeout: maximum timeout supported by device + * @rx_resolution : resolution (in ns) of input sampler + * @tx_resolution: resolution (in ns) of output sampler + * @priv: driver-specific data, to be used on the callbacks + * @change_protocol: allow changing the protocol used on hardware decoders + * @open: callback to allow drivers to enable polling/irq when IR input device + * is opened. + * @close: callback to allow drivers to disable polling/irq when IR input device + * is opened. + * @s_tx_mask: set transmitter mask (for devices with multiple tx outputs) + * @s_tx_carrier: set transmit carrier frequency + * @s_tx_duty_cycle: set transmit duty cycle (0% - 100%) + * @s_rx_carrier: inform driver about carrier it is expected to handle + * @tx_ir: transmit IR + * @s_idle: optional: enable/disable hardware idle mode, upon which, + device doesn't interrupt host until it sees IR pulses + * @s_learning_mode: enable wide band receiver used for learning + */ struct ir_dev_props { - unsigned long allowed_protos; - void *priv; - int (*change_protocol)(void *priv, u64 ir_type); -}; + enum rc_driver_type driver_type; + unsigned long allowed_protos; + u32 scanmask; + + u32 timeout; + u32 min_timeout; + u32 max_timeout; + u32 rx_resolution; + u32 tx_resolution; + + void *priv; + int (*change_protocol)(void *priv, u64 ir_type); + int (*open)(void *priv); + void (*close)(void *priv); + int (*s_tx_mask)(void *priv, u32 mask); + int (*s_tx_carrier)(void *priv, u32 carrier); + int (*s_tx_duty_cycle)(void *priv, u32 duty_cycle); + int (*s_rx_carrier_range)(void *priv, u32 min, u32 max); + int (*tx_ir)(void *priv, int *txbuf, u32 n); + void (*s_idle)(void *priv, int enable); + int (*s_learning_mode)(void *priv, int enable); +}; struct ir_input_dev { - struct input_dev *dev; /* Input device*/ + struct device dev; /* device */ + char *driver_name; /* Name of the driver module */ struct ir_scancode_table rc_tab; /* scan/key table */ unsigned long devno; /* device number */ - struct attribute_group attr; /* IR attributes */ - struct device *class_dev; /* virtual class dev */ - const struct ir_dev_props *props; /* Device properties */ + struct ir_dev_props *props; /* Device properties */ + struct ir_raw_event_ctrl *raw; /* for raw pulse/space events */ + struct input_dev *input_dev; /* the input device associated with this device */ + bool idle; + + /* key info - needed by IR keycode handlers */ + spinlock_t keylock; /* protects the below members */ + bool keypressed; /* current state */ + unsigned long keyup_jiffies; /* when should the current keypress be released? */ + struct timer_list timer_keyup; /* timer for releasing a keypress */ + u32 last_keycode; /* keycode of last command */ + u32 last_scancode; /* scancode of last command */ + u8 last_toggle; /* toggle of last command */ }; -#define to_ir_input_dev(_attr) container_of(_attr, struct ir_input_dev, attr) -/* Routines from ir-keytable.c */ +enum raw_event_type { + IR_SPACE = (1 << 0), + IR_PULSE = (1 << 1), + IR_START_EVENT = (1 << 2), + IR_STOP_EVENT = (1 << 3), +}; -u32 ir_g_keycode_from_table(struct input_dev *input_dev, - u32 scancode); +#define to_ir_input_dev(_attr) container_of(_attr, struct ir_input_dev, attr) -int ir_input_register(struct input_dev *dev, +/* From ir-keytable.c */ +int __ir_input_register(struct input_dev *dev, const struct ir_scancode_table *ir_codes, - const struct ir_dev_props *props); + struct ir_dev_props *props, + const char *driver_name); + +static inline int ir_input_register(struct input_dev *dev, + const char *map_name, + struct ir_dev_props *props, + const char *driver_name) { + struct ir_scancode_table *ir_codes; + struct ir_input_dev *ir_dev; + int rc; + + if (!map_name) + return -EINVAL; + + ir_codes = get_rc_map(map_name); + if (!ir_codes) { + ir_codes = get_rc_map(RC_MAP_EMPTY); + + if (!ir_codes) + return -EINVAL; + } + + rc = __ir_input_register(dev, ir_codes, props, driver_name); + if (rc < 0) + return -EINVAL; + + ir_dev = input_get_drvdata(dev); + + if (!rc && ir_dev->props && ir_dev->props->change_protocol) + rc = ir_dev->props->change_protocol(ir_dev->props->priv, + ir_codes->ir_type); + + return rc; +} + void ir_input_unregister(struct input_dev *input_dev); -/* Routines from ir-sysfs.c */ +void ir_repeat(struct input_dev *dev); +void ir_keydown(struct input_dev *dev, int scancode, u8 toggle); +u32 ir_g_keycode_from_table(struct input_dev *input_dev, u32 scancode); + +/* From ir-raw-event.c */ + +struct ir_raw_event { + unsigned pulse:1; + unsigned duration:31; +}; + +#define IR_MAX_DURATION 0x7FFFFFFF /* a bit more than 2 seconds */ + +void ir_raw_event_handle(struct input_dev *input_dev); +int ir_raw_event_store(struct input_dev *input_dev, struct ir_raw_event *ev); +int ir_raw_event_store_edge(struct input_dev *input_dev, enum raw_event_type type); +int ir_raw_event_store_with_filter(struct input_dev *input_dev, + struct ir_raw_event *ev); +void ir_raw_event_set_idle(struct input_dev *input_dev, int idle); -int ir_register_class(struct input_dev *input_dev); -void ir_unregister_class(struct input_dev *input_dev); +static inline void ir_raw_event_reset(struct input_dev *input_dev) +{ + struct ir_raw_event ev = { .pulse = false, .duration = 0 }; + ir_raw_event_store(input_dev, &ev); + ir_raw_event_handle(input_dev); +} -#endif +#endif /* _IR_CORE */ |