2 * Remote Controller core header
4 * Copyright (C) 2009-2010 by Mauro Carvalho Chehab <mchehab@redhat.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation version 2 of the License.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
19 #include <linux/spinlock.h>
20 #include <linux/kfifo.h>
21 #include <linux/time.h>
22 #include <linux/timer.h>
23 #include <media/rc-map.h>
25 extern int ir_core_debug;
26 #define IR_dprintk(level, fmt, arg...) if (ir_core_debug >= level) \
27 printk(KERN_DEBUG "%s: " fmt , __func__, ## arg)
30 RC_DRIVER_SCANCODE = 0, /* Driver or hardware generates a scancode */
31 RC_DRIVER_IR_RAW, /* Needs a Infra-Red pulse/space decoder */
35 * struct ir_dev_props - Allow caller drivers to set special properties
36 * @driver_type: specifies if the driver or hardware have already a decoder,
37 * or if it needs to use the IR raw event decoders to produce a scancode
38 * @allowed_protos: bitmask with the supported IR_TYPE_* protocols
39 * @scanmask: some hardware decoders are not capable of providing the full
40 * scancode to the application. As this is a hardware limit, we can't do
41 * anything with it. Yet, as the same keycode table can be used with other
42 * devices, a mask is provided to allow its usage. Drivers should generally
43 * leave this field in blank
44 * @timeout: optional time after which device stops sending data
45 * @min_timeout: minimum timeout supported by device
46 * @max_timeout: maximum timeout supported by device
47 * @priv: driver-specific data, to be used on the callbacks
48 * @change_protocol: allow changing the protocol used on hardware decoders
49 * @open: callback to allow drivers to enable polling/irq when IR input device
51 * @close: callback to allow drivers to disable polling/irq when IR input device
53 * @s_tx_mask: set transmitter mask (for devices with multiple tx outputs)
54 * @s_tx_carrier: set transmit carrier frequency
56 * @s_idle: optional: enable/disable hardware idle mode, upon which,
57 * device doesn't interrupt host untill it sees IR data
60 enum rc_driver_type driver_type;
61 unsigned long allowed_protos;
70 int (*change_protocol)(void *priv, u64 ir_type);
71 int (*open)(void *priv);
72 void (*close)(void *priv);
73 int (*s_tx_mask)(void *priv, u32 mask);
74 int (*s_tx_carrier)(void *priv, u32 carrier);
75 int (*tx_ir)(void *priv, int *txbuf, u32 n);
76 void (*s_idle)(void *priv, int enable);
80 struct device dev; /* device */
81 char *driver_name; /* Name of the driver module */
82 struct ir_scancode_table rc_tab; /* scan/key table */
83 unsigned long devno; /* device number */
84 struct ir_dev_props *props; /* Device properties */
85 struct ir_raw_event_ctrl *raw; /* for raw pulse/space events */
86 struct input_dev *input_dev; /* the input device associated with this device */
89 /* key info - needed by IR keycode handlers */
90 spinlock_t keylock; /* protects the below members */
91 bool keypressed; /* current state */
92 unsigned long keyup_jiffies; /* when should the current keypress be released? */
93 struct timer_list timer_keyup; /* timer for releasing a keypress */
94 u32 last_keycode; /* keycode of last command */
95 u32 last_scancode; /* scancode of last command */
96 u8 last_toggle; /* toggle of last command */
102 IR_START_EVENT = (1 << 2),
103 IR_STOP_EVENT = (1 << 3),
106 #define to_ir_input_dev(_attr) container_of(_attr, struct ir_input_dev, attr)
108 /* From ir-keytable.c */
109 int __ir_input_register(struct input_dev *dev,
110 const struct ir_scancode_table *ir_codes,
111 struct ir_dev_props *props,
112 const char *driver_name);
114 static inline int ir_input_register(struct input_dev *dev,
115 const char *map_name,
116 struct ir_dev_props *props,
117 const char *driver_name) {
118 struct ir_scancode_table *ir_codes;
119 struct ir_input_dev *ir_dev;
125 ir_codes = get_rc_map(map_name);
127 ir_codes = get_rc_map(RC_MAP_EMPTY);
133 rc = __ir_input_register(dev, ir_codes, props, driver_name);
137 ir_dev = input_get_drvdata(dev);
139 if (!rc && ir_dev->props && ir_dev->props->change_protocol)
140 rc = ir_dev->props->change_protocol(ir_dev->props->priv,
146 void ir_input_unregister(struct input_dev *input_dev);
148 void ir_repeat(struct input_dev *dev);
149 void ir_keydown(struct input_dev *dev, int scancode, u8 toggle);
150 u32 ir_g_keycode_from_table(struct input_dev *input_dev, u32 scancode);
152 /* From ir-raw-event.c */
154 struct ir_raw_event {
156 unsigned duration:31;
159 #define IR_MAX_DURATION 0x7FFFFFFF /* a bit more than 2 seconds */
161 void ir_raw_event_handle(struct input_dev *input_dev);
162 int ir_raw_event_store(struct input_dev *input_dev, struct ir_raw_event *ev);
163 int ir_raw_event_store_edge(struct input_dev *input_dev, enum raw_event_type type);
164 int ir_raw_event_store_with_filter(struct input_dev *input_dev,
165 struct ir_raw_event *ev);
166 void ir_raw_event_set_idle(struct input_dev *input_dev, int idle);
168 static inline void ir_raw_event_reset(struct input_dev *input_dev)
170 struct ir_raw_event ev = { .pulse = false, .duration = 0 };
171 ir_raw_event_store(input_dev, &ev);
172 ir_raw_event_handle(input_dev);
175 #endif /* _IR_CORE */