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authorGlenn Elliott <gelliott@cs.unc.edu>2012-03-04 19:47:13 -0500
committerGlenn Elliott <gelliott@cs.unc.edu>2012-03-04 19:47:13 -0500
commitc71c03bda1e86c9d5198c5d83f712e695c4f2a1e (patch)
treeecb166cb3e2b7e2adb3b5e292245fefd23381ac8 /include/media/ir-core.h
parentea53c912f8a86a8567697115b6a0d8152beee5c8 (diff)
parent6a00f206debf8a5c8899055726ad127dbeeed098 (diff)
Merge branch 'mpi-master' into wip-k-fmlpwip-k-fmlp
Conflicts: litmus/sched_cedf.c
Diffstat (limited to 'include/media/ir-core.h')
-rw-r--r--include/media/ir-core.h185
1 files changed, 0 insertions, 185 deletions
diff --git a/include/media/ir-core.h b/include/media/ir-core.h
deleted file mode 100644
index eb7fddf8f607..000000000000
--- a/include/media/ir-core.h
+++ /dev/null
@@ -1,185 +0,0 @@
1/*
2 * Remote Controller core header
3 *
4 * Copyright (C) 2009-2010 by Mauro Carvalho Chehab <mchehab@redhat.com>
5 *
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.
9 *
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.
14 */
15
16#ifndef _IR_CORE
17#define _IR_CORE
18
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>
24
25extern int ir_core_debug;
26#define IR_dprintk(level, fmt, arg...) if (ir_core_debug >= level) \
27 printk(KERN_DEBUG "%s: " fmt , __func__, ## arg)
28
29enum rc_driver_type {
30 RC_DRIVER_SCANCODE = 0, /* Driver or hardware generates a scancode */
31 RC_DRIVER_IR_RAW, /* Needs a Infra-Red pulse/space decoder */
32};
33
34/**
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 * @rx_resolution : resolution (in ns) of input sampler
48 * @tx_resolution: resolution (in ns) of output sampler
49 * @priv: driver-specific data, to be used on the callbacks
50 * @change_protocol: allow changing the protocol used on hardware decoders
51 * @open: callback to allow drivers to enable polling/irq when IR input device
52 * is opened.
53 * @close: callback to allow drivers to disable polling/irq when IR input device
54 * is opened.
55 * @s_tx_mask: set transmitter mask (for devices with multiple tx outputs)
56 * @s_tx_carrier: set transmit carrier frequency
57 * @s_tx_duty_cycle: set transmit duty cycle (0% - 100%)
58 * @s_rx_carrier: inform driver about carrier it is expected to handle
59 * @tx_ir: transmit IR
60 * @s_idle: optional: enable/disable hardware idle mode, upon which,
61 device doesn't interrupt host until it sees IR pulses
62 * @s_learning_mode: enable wide band receiver used for learning
63 */
64struct ir_dev_props {
65 enum rc_driver_type driver_type;
66 unsigned long allowed_protos;
67 u32 scanmask;
68
69 u32 timeout;
70 u32 min_timeout;
71 u32 max_timeout;
72
73 u32 rx_resolution;
74 u32 tx_resolution;
75
76 void *priv;
77 int (*change_protocol)(void *priv, u64 ir_type);
78 int (*open)(void *priv);
79 void (*close)(void *priv);
80 int (*s_tx_mask)(void *priv, u32 mask);
81 int (*s_tx_carrier)(void *priv, u32 carrier);
82 int (*s_tx_duty_cycle)(void *priv, u32 duty_cycle);
83 int (*s_rx_carrier_range)(void *priv, u32 min, u32 max);
84 int (*tx_ir)(void *priv, int *txbuf, u32 n);
85 void (*s_idle)(void *priv, int enable);
86 int (*s_learning_mode)(void *priv, int enable);
87};
88
89struct ir_input_dev {
90 struct device dev; /* device */
91 char *driver_name; /* Name of the driver module */
92 struct ir_scancode_table rc_tab; /* scan/key table */
93 unsigned long devno; /* device number */
94 struct ir_dev_props *props; /* Device properties */
95 struct ir_raw_event_ctrl *raw; /* for raw pulse/space events */
96 struct input_dev *input_dev; /* the input device associated with this device */
97 bool idle;
98
99 /* key info - needed by IR keycode handlers */
100 spinlock_t keylock; /* protects the below members */
101 bool keypressed; /* current state */
102 unsigned long keyup_jiffies; /* when should the current keypress be released? */
103 struct timer_list timer_keyup; /* timer for releasing a keypress */
104 u32 last_keycode; /* keycode of last command */
105 u32 last_scancode; /* scancode of last command */
106 u8 last_toggle; /* toggle of last command */
107};
108
109enum raw_event_type {
110 IR_SPACE = (1 << 0),
111 IR_PULSE = (1 << 1),
112 IR_START_EVENT = (1 << 2),
113 IR_STOP_EVENT = (1 << 3),
114};
115
116#define to_ir_input_dev(_attr) container_of(_attr, struct ir_input_dev, attr)
117
118/* From ir-keytable.c */
119int __ir_input_register(struct input_dev *dev,
120 const struct ir_scancode_table *ir_codes,
121 struct ir_dev_props *props,
122 const char *driver_name);
123
124static inline int ir_input_register(struct input_dev *dev,
125 const char *map_name,
126 struct ir_dev_props *props,
127 const char *driver_name) {
128 struct ir_scancode_table *ir_codes;
129 struct ir_input_dev *ir_dev;
130 int rc;
131
132 if (!map_name)
133 return -EINVAL;
134
135 ir_codes = get_rc_map(map_name);
136 if (!ir_codes) {
137 ir_codes = get_rc_map(RC_MAP_EMPTY);
138
139 if (!ir_codes)
140 return -EINVAL;
141 }
142
143 rc = __ir_input_register(dev, ir_codes, props, driver_name);
144 if (rc < 0)
145 return -EINVAL;
146
147 ir_dev = input_get_drvdata(dev);
148
149 if (!rc && ir_dev->props && ir_dev->props->change_protocol)
150 rc = ir_dev->props->change_protocol(ir_dev->props->priv,
151 ir_codes->ir_type);
152
153 return rc;
154}
155
156void ir_input_unregister(struct input_dev *input_dev);
157
158void ir_repeat(struct input_dev *dev);
159void ir_keydown(struct input_dev *dev, int scancode, u8 toggle);
160u32 ir_g_keycode_from_table(struct input_dev *input_dev, u32 scancode);
161
162/* From ir-raw-event.c */
163
164struct ir_raw_event {
165 unsigned pulse:1;
166 unsigned duration:31;
167};
168
169#define IR_MAX_DURATION 0x7FFFFFFF /* a bit more than 2 seconds */
170
171void ir_raw_event_handle(struct input_dev *input_dev);
172int ir_raw_event_store(struct input_dev *input_dev, struct ir_raw_event *ev);
173int ir_raw_event_store_edge(struct input_dev *input_dev, enum raw_event_type type);
174int ir_raw_event_store_with_filter(struct input_dev *input_dev,
175 struct ir_raw_event *ev);
176void ir_raw_event_set_idle(struct input_dev *input_dev, int idle);
177
178static inline void ir_raw_event_reset(struct input_dev *input_dev)
179{
180 struct ir_raw_event ev = { .pulse = false, .duration = 0 };
181 ir_raw_event_store(input_dev, &ev);
182 ir_raw_event_handle(input_dev);
183}
184
185#endif /* _IR_CORE */
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