summaryrefslogtreecommitdiff
path: root/drivers/media/video/ir-kbd-gpio.c
blob: eddadc76e11d65cc26b0ba2db93946a0d59c9d2d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
/*
 *
 * Copyright (c) 2003 Gerd Knorr
 * Copyright (c) 2003 Pavel Machek
 *
 * 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; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/input.h>
#include <linux/pci.h>

#include <media/ir-common.h>

#include "bttv.h"

/* ---------------------------------------------------------------------- */

static IR_KEYTAB_TYPE ir_codes_avermedia[IR_KEYTAB_SIZE] = {
	[ 34 ] = KEY_KP0,
	[ 40 ] = KEY_KP1,
	[ 24 ] = KEY_KP2,
	[ 56 ] = KEY_KP3,
	[ 36 ] = KEY_KP4,
	[ 20 ] = KEY_KP5,
	[ 52 ] = KEY_KP6,
	[ 44 ] = KEY_KP7,
	[ 28 ] = KEY_KP8,
	[ 60 ] = KEY_KP9,

	[ 48 ] = KEY_EJECTCD,     // Unmarked on my controller
	[  0 ] = KEY_POWER,
	[ 18 ] = BTN_LEFT,        // DISPLAY/L
	[ 50 ] = BTN_RIGHT,       // LOOP/R
	[ 10 ] = KEY_MUTE,
	[ 38 ] = KEY_RECORD,
	[ 22 ] = KEY_PAUSE,
	[ 54 ] = KEY_STOP,
	[ 30 ] = KEY_VOLUMEDOWN,
	[ 62 ] = KEY_VOLUMEUP,

	[ 32 ] = KEY_TUNER,       // TV/FM
	[ 16 ] = KEY_CD,
	[  8 ] = KEY_VIDEO,
	[  4 ] = KEY_AUDIO,
	[ 12 ] = KEY_ZOOM,        // full screen
	[  2 ] = KEY_INFO,        // preview
	[ 42 ] = KEY_SEARCH,      // autoscan
	[ 26 ] = KEY_STOP,        // freeze
	[ 58 ] = KEY_RECORD,      // capture
	[  6 ] = KEY_PLAY,        // unmarked
	[ 46 ] = KEY_RED,         // unmarked
	[ 14 ] = KEY_GREEN,       // unmarked

	[ 33 ] = KEY_YELLOW,      // unmarked
	[ 17 ] = KEY_CHANNELDOWN,
	[ 49 ] = KEY_CHANNELUP,
	[  1 ] = KEY_BLUE,        // unmarked
};

/* Matt Jesson <dvb@jesson.eclipse.co.uk */
static IR_KEYTAB_TYPE ir_codes_avermedia_dvbt[IR_KEYTAB_SIZE] = {
	[ 0x28 ] = KEY_KP0,         //'0' / 'enter'
	[ 0x22 ] = KEY_KP1,         //'1'
	[ 0x12 ] = KEY_KP2,         //'2' / 'up arrow'
	[ 0x32 ] = KEY_KP3,         //'3'
	[ 0x24 ] = KEY_KP4,         //'4' / 'left arrow'
	[ 0x14 ] = KEY_KP5,         //'5'
	[ 0x34 ] = KEY_KP6,         //'6' / 'right arrow'
	[ 0x26 ] = KEY_KP7,         //'7'
	[ 0x16 ] = KEY_KP8,         //'8' / 'down arrow'
	[ 0x36 ] = KEY_KP9,         //'9'

	[ 0x20 ] = KEY_LIST,        // 'source'
	[ 0x10 ] = KEY_TEXT,        // 'teletext'
	[ 0x00 ] = KEY_POWER,       // 'power'
	[ 0x04 ] = KEY_AUDIO,       // 'audio'
	[ 0x06 ] = KEY_ZOOM,        // 'full screen'
	[ 0x18 ] = KEY_VIDEO,       // 'display'
	[ 0x38 ] = KEY_SEARCH,      // 'loop'
	[ 0x08 ] = KEY_INFO,        // 'preview'
	[ 0x2a ] = KEY_REWIND,      // 'backward <<'
	[ 0x1a ] = KEY_FASTFORWARD, // 'forward >>'
	[ 0x3a ] = KEY_RECORD,      // 'capture'
	[ 0x0a ] = KEY_MUTE,        // 'mute'
	[ 0x2c ] = KEY_RECORD,      // 'record'
	[ 0x1c ] = KEY_PAUSE,       // 'pause'
	[ 0x3c ] = KEY_STOP,        // 'stop'
	[ 0x0c ] = KEY_PLAY,        // 'play'
	[ 0x2e ] = KEY_RED,         // 'red'
	[ 0x01 ] = KEY_BLUE,        // 'blue' / 'cancel'
	[ 0x0e ] = KEY_YELLOW,      // 'yellow' / 'ok'
	[ 0x21 ] = KEY_GREEN,       // 'green'
	[ 0x11 ] = KEY_CHANNELDOWN, // 'channel -'
	[ 0x31 ] = KEY_CHANNELUP,   // 'channel +'
	[ 0x1e ] = KEY_VOLUMEDOWN,  // 'volume -'
	[ 0x3e ] = KEY_VOLUMEUP,    // 'volume +'
};

/* Attila Kondoros <attila.kondoros@chello.hu> */
static IR_KEYTAB_TYPE ir_codes_apac_viewcomp[IR_KEYTAB_SIZE] = {

	[  1 ] = KEY_KP1,
	[  2 ] = KEY_KP2,
	[  3 ] = KEY_KP3,
	[  4 ] = KEY_KP4,
	[  5 ] = KEY_KP5,
	[  6 ] = KEY_KP6,
	[  7 ] = KEY_KP7,
	[  8 ] = KEY_KP8,
	[  9 ] = KEY_KP9,
	[  0 ] = KEY_KP0,
	[ 23 ] = KEY_LAST,        // +100
	[ 10 ] = KEY_LIST,        // recall


	[ 28 ] = KEY_TUNER,       // TV/FM
	[ 21 ] = KEY_SEARCH,      // scan
	[ 18 ] = KEY_POWER,       // power
	[ 31 ] = KEY_VOLUMEDOWN,  // vol up
	[ 27 ] = KEY_VOLUMEUP,    // vol down
	[ 30 ] = KEY_CHANNELDOWN, // chn up
	[ 26 ] = KEY_CHANNELUP,   // chn down

	[ 17 ] = KEY_VIDEO,       // video
	[ 15 ] = KEY_ZOOM,        // full screen
	[ 19 ] = KEY_MUTE,        // mute/unmute
	[ 16 ] = KEY_TEXT,        // min

	[ 13 ] = KEY_STOP,        // freeze
	[ 14 ] = KEY_RECORD,      // record
	[ 29 ] = KEY_PLAYPAUSE,   // stop
	[ 25 ] = KEY_PLAY,        // play

	[ 22 ] = KEY_GOTO,        // osd
	[ 20 ] = KEY_REFRESH,     // default
	[ 12 ] = KEY_KPPLUS,      // fine tune >>>>
	[ 24 ] = KEY_KPMINUS      // fine tune <<<<
};

/* ---------------------------------------------------------------------- */

struct IR {
	struct bttv_sub_device  *sub;
	struct input_dev        input;
	struct ir_input_state   ir;
	char                    name[32];
	char                    phys[32];
	u32                     mask_keycode;
	u32                     mask_keydown;
	u32                     mask_keyup;

	int                     polling;
	u32                     last_gpio;
	struct work_struct      work;
	struct timer_list       timer;
};

static int debug;
module_param(debug, int, 0644);    /* debug level (0,1,2) */

#define DEVNAME "ir-kbd-gpio"
#define dprintk(fmt, arg...)	if (debug) \
	printk(KERN_DEBUG DEVNAME ": " fmt , ## arg)

static void ir_irq(struct bttv_sub_device *sub);
static int ir_probe(struct device *dev);
static int ir_remove(struct device *dev);

static struct bttv_sub_driver driver = {
	.drv = {
		.name	= DEVNAME,
		.probe	= ir_probe,
		.remove	= ir_remove,
	},
	.gpio_irq       = ir_irq,
};

/* ---------------------------------------------------------------------- */

static void ir_handle_key(struct IR *ir)
{
	u32 gpio,data;

	/* read gpio value */
	gpio = bttv_gpio_read(ir->sub->core);
	if (ir->polling) {
		if (ir->last_gpio == gpio)
			return;
		ir->last_gpio = gpio;
	}

	/* extract data */
	data = ir_extract_bits(gpio, ir->mask_keycode);
	dprintk(DEVNAME ": irq gpio=0x%x code=%d | %s%s%s\n",
		gpio, data,
		ir->polling               ? "poll"  : "irq",
		(gpio & ir->mask_keydown) ? " down" : "",
		(gpio & ir->mask_keyup)   ? " up"   : "");

	if (ir->mask_keydown) {
		/* bit set on keydown */
		if (gpio & ir->mask_keydown) {
			ir_input_keydown(&ir->input,&ir->ir,data,data);
		} else {
			ir_input_nokey(&ir->input,&ir->ir);
		}

	} else if (ir->mask_keyup) {
		/* bit cleared on keydown */
		if (0 == (gpio & ir->mask_keyup)) {
			ir_input_keydown(&ir->input,&ir->ir,data,data);
		} else {
			ir_input_nokey(&ir->input,&ir->ir);
		}

	} else {
		/* can't disturgissh keydown/up :-/ */
		ir_input_keydown(&ir->input,&ir->ir,data,data);
		ir_input_nokey(&ir->input,&ir->ir);
	}
}

static void ir_irq(struct bttv_sub_device *sub)
{
	struct IR *ir = dev_get_drvdata(&sub->dev);

	if (!ir->polling)
		ir_handle_key(ir);
}

static void ir_timer(unsigned long data)
{
	struct IR *ir = (struct IR*)data;

	schedule_work(&ir->work);
}

static void ir_work(void *data)
{
	struct IR *ir = data;
	unsigned long timeout;

	ir_handle_key(ir);
	timeout = jiffies + (ir->polling * HZ / 1000);
	mod_timer(&ir->timer, timeout);
}

/* ---------------------------------------------------------------------- */

static int ir_probe(struct device *dev)
{
	struct bttv_sub_device *sub = to_bttv_sub_dev(dev);
	struct IR *ir;
	IR_KEYTAB_TYPE *ir_codes = NULL;
	int ir_type = IR_TYPE_OTHER;

	ir = kmalloc(sizeof(*ir),GFP_KERNEL);
	if (NULL == ir)
		return -ENOMEM;
	memset(ir,0,sizeof(*ir));

	/* detect & configure */
	switch (sub->core->type) {
	case BTTV_AVERMEDIA:
	case BTTV_AVPHONE98:
	case BTTV_AVERMEDIA98:
		ir_codes         = ir_codes_avermedia;
		ir->mask_keycode = 0xf88000;
		ir->mask_keydown = 0x010000;
		ir->polling      = 50; // ms
		break;

	case BTTV_AVDVBT_761:
	case BTTV_AVDVBT_771:
		ir_codes         = ir_codes_avermedia_dvbt;
		ir->mask_keycode = 0x0f00c0;
		ir->mask_keydown = 0x000020;
		ir->polling      = 50; // ms
		break;

	case BTTV_PXELVWPLTVPAK:
		ir_codes         = ir_codes_pixelview;
		ir->mask_keycode = 0x003e00;
		ir->mask_keyup   = 0x010000;
		ir->polling      = 50; // ms
                break;
	case BTTV_PV_BT878P_9B:
	case BTTV_PV_BT878P_PLUS:
		ir_codes         = ir_codes_pixelview;
		ir->mask_keycode = 0x001f00;
		ir->mask_keyup   = 0x008000;
		ir->polling      = 50; // ms
                break;

	case BTTV_WINFAST2000:
		ir_codes         = ir_codes_winfast;
		ir->mask_keycode = 0x1f8;
		break;
	case BTTV_MAGICTVIEW061:
	case BTTV_MAGICTVIEW063:
		ir_codes         = ir_codes_winfast;
		ir->mask_keycode = 0x0008e000;
		ir->mask_keydown = 0x00200000;
		break;
	case BTTV_APAC_VIEWCOMP:
		ir_codes         = ir_codes_apac_viewcomp;
		ir->mask_keycode = 0x001f00;
		ir->mask_keyup   = 0x008000;
		ir->polling      = 50; // ms
		break;
	}
	if (NULL == ir_codes) {
		kfree(ir);
		return -ENODEV;
	}

	/* init hardware-specific stuff */
	bttv_gpio_inout(sub->core, ir->mask_keycode | ir->mask_keydown, 0);
	ir->sub = sub;

	/* init input device */
	snprintf(ir->name, sizeof(ir->name), "bttv IR (card=%d)",
		 sub->core->type);
	snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
		 pci_name(sub->core->pci));

	ir_input_init(&ir->input, &ir->ir, ir_type, ir_codes);
	ir->input.name = ir->name;
	ir->input.phys = ir->phys;
	ir->input.id.bustype = BUS_PCI;
	ir->input.id.version = 1;
	if (sub->core->pci->subsystem_vendor) {
		ir->input.id.vendor  = sub->core->pci->subsystem_vendor;
		ir->input.id.product = sub->core->pci->subsystem_device;
	} else {
		ir->input.id.vendor  = sub->core->pci->vendor;
		ir->input.id.product = sub->core->pci->device;
	}

	if (ir->polling) {
		INIT_WORK(&ir->work, ir_work, ir);
		init_timer(&ir->timer);
		ir->timer.function = ir_timer;
		ir->timer.data     = (unsigned long)ir;
		schedule_work(&ir->work);
	}

	/* all done */
	dev_set_drvdata(dev,ir);
	input_register_device(&ir->input);
	printk(DEVNAME ": %s detected at %s\n",ir->input.name,ir->input.phys);

	return 0;
}

static int ir_remove(struct device *dev)
{
	struct IR *ir = dev_get_drvdata(dev);

	if (ir->polling) {
		del_timer(&ir->timer);
		flush_scheduled_work();
	}

	input_unregister_device(&ir->input);
	kfree(ir);
	return 0;
}

/* ---------------------------------------------------------------------- */

MODULE_AUTHOR("Gerd Knorr, Pavel Machek");
MODULE_DESCRIPTION("input driver for bt8x8 gpio IR remote controls");
MODULE_LICENSE("GPL");

static int ir_init(void)
{
	return bttv_sub_register(&driver, "remote");
}

static void ir_fini(void)
{
	bttv_sub_unregister(&driver);
}

module_init(ir_init);
module_exit(ir_fini);


/*
 * Local variables:
 * c-basic-offset: 8
 * End:
 */