Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | *************************************************************************** | |
4286c6f6 | 3 | * |
1da177e4 LT |
4 | * radio-gemtek-pci.c - Gemtek PCI Radio driver |
5 | * (C) 2001 Vladimir Shebordaev <vshebordaev@mail.ru> | |
6 | * | |
7 | *************************************************************************** | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU General Public License as | |
11 | * published by the Free Software Foundation; either version 2 of | |
12 | * the License, or (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public | |
20 | * License along with this program; if not, write to the Free | |
21 | * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, | |
22 | * USA. | |
23 | * | |
24 | *************************************************************************** | |
25 | * | |
26 | * Gemtek Corp still silently refuses to release any specifications | |
27 | * of their multimedia devices, so the protocol still has to be | |
28 | * reverse engineered. | |
29 | * | |
30 | * The v4l code was inspired by Jonas Munsin's Gemtek serial line | |
31 | * radio device driver. | |
32 | * | |
33 | * Please, let me know if this piece of code was useful :) | |
4286c6f6 | 34 | * |
1da177e4 LT |
35 | * TODO: multiple device support and portability were not tested |
36 | * | |
52afbc2f MCC |
37 | * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org> |
38 | * | |
1da177e4 LT |
39 | *************************************************************************** |
40 | */ | |
41 | ||
1da177e4 LT |
42 | #include <linux/types.h> |
43 | #include <linux/list.h> | |
44 | #include <linux/module.h> | |
45 | #include <linux/init.h> | |
46 | #include <linux/pci.h> | |
52afbc2f | 47 | #include <linux/videodev2.h> |
5e87efa3 | 48 | #include <media/v4l2-common.h> |
1da177e4 LT |
49 | #include <linux/errno.h> |
50 | ||
52afbc2f MCC |
51 | #include <linux/version.h> /* for KERNEL_VERSION MACRO */ |
52 | #define RADIO_VERSION KERNEL_VERSION(0,0,2) | |
53 | ||
54 | static struct v4l2_queryctrl radio_qctrl[] = { | |
55 | { | |
56 | .id = V4L2_CID_AUDIO_MUTE, | |
57 | .name = "Mute", | |
58 | .minimum = 0, | |
59 | .maximum = 1, | |
60 | .default_value = 1, | |
61 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
62 | },{ | |
63 | .id = V4L2_CID_AUDIO_VOLUME, | |
64 | .name = "Volume", | |
65 | .minimum = 0, | |
66 | .maximum = 65535, | |
67 | .step = 65535, | |
68 | .default_value = 0xff, | |
69 | .type = V4L2_CTRL_TYPE_INTEGER, | |
70 | } | |
71 | }; | |
72 | ||
1da177e4 LT |
73 | #include <asm/io.h> |
74 | #include <asm/uaccess.h> | |
75 | ||
76 | #ifndef PCI_VENDOR_ID_GEMTEK | |
77 | #define PCI_VENDOR_ID_GEMTEK 0x5046 | |
78 | #endif | |
79 | ||
80 | #ifndef PCI_DEVICE_ID_GEMTEK_PR103 | |
81 | #define PCI_DEVICE_ID_GEMTEK_PR103 0x1001 | |
82 | #endif | |
83 | ||
84 | #ifndef GEMTEK_PCI_RANGE_LOW | |
85 | #define GEMTEK_PCI_RANGE_LOW (87*16000) | |
86 | #endif | |
87 | ||
88 | #ifndef GEMTEK_PCI_RANGE_HIGH | |
89 | #define GEMTEK_PCI_RANGE_HIGH (108*16000) | |
90 | #endif | |
91 | ||
1da177e4 LT |
92 | struct gemtek_pci_card { |
93 | struct video_device *videodev; | |
4286c6f6 | 94 | |
1da177e4 LT |
95 | u32 iobase; |
96 | u32 length; | |
97 | u8 chiprev; | |
98 | u16 model; | |
4286c6f6 | 99 | |
1da177e4 LT |
100 | u32 current_frequency; |
101 | u8 mute; | |
102 | }; | |
103 | ||
104 | static const char rcsid[] = "$Id: radio-gemtek-pci.c,v 1.1 2001/07/23 08:08:16 ted Exp ted $"; | |
105 | ||
106 | static int nr_radio = -1; | |
107 | ||
108 | static inline u8 gemtek_pci_out( u16 value, u32 port ) | |
109 | { | |
110 | outw( value, port ); | |
111 | ||
112 | return (u8)value; | |
113 | } | |
114 | ||
4286c6f6 | 115 | #define _b0( v ) *((u8 *)&v) |
1da177e4 LT |
116 | static void __gemtek_pci_cmd( u16 value, u32 port, u8 *last_byte, int keep ) |
117 | { | |
118 | register u8 byte = *last_byte; | |
119 | ||
120 | if ( !value ) { | |
121 | if ( !keep ) | |
122 | value = (u16)port; | |
4286c6f6 | 123 | byte &= 0xfd; |
1da177e4 LT |
124 | } else |
125 | byte |= 2; | |
126 | ||
127 | _b0( value ) = byte; | |
128 | outw( value, port ); | |
129 | byte |= 1; | |
130 | _b0( value ) = byte; | |
131 | outw( value, port ); | |
132 | byte &= 0xfe; | |
133 | _b0( value ) = byte; | |
134 | outw( value, port ); | |
4286c6f6 | 135 | |
1da177e4 LT |
136 | *last_byte = byte; |
137 | } | |
138 | ||
139 | static inline void gemtek_pci_nil( u32 port, u8 *last_byte ) | |
140 | { | |
fd4bc445 | 141 | __gemtek_pci_cmd( 0x00, port, last_byte, false ); |
1da177e4 LT |
142 | } |
143 | ||
144 | static inline void gemtek_pci_cmd( u16 cmd, u32 port, u8 *last_byte ) | |
145 | { | |
fd4bc445 | 146 | __gemtek_pci_cmd( cmd, port, last_byte, true ); |
1da177e4 LT |
147 | } |
148 | ||
149 | static void gemtek_pci_setfrequency( struct gemtek_pci_card *card, unsigned long frequency ) | |
150 | { | |
151 | register int i; | |
152 | register u32 value = frequency / 200 + 856; | |
153 | register u16 mask = 0x8000; | |
154 | u8 last_byte; | |
155 | u32 port = card->iobase; | |
156 | ||
157 | last_byte = gemtek_pci_out( 0x06, port ); | |
158 | ||
159 | i = 0; | |
160 | do { | |
161 | gemtek_pci_nil( port, &last_byte ); | |
162 | i++; | |
163 | } while ( i < 9 ); | |
164 | ||
165 | i = 0; | |
166 | do { | |
167 | gemtek_pci_cmd( value & mask, port, &last_byte ); | |
168 | mask >>= 1; | |
169 | i++; | |
170 | } while ( i < 16 ); | |
171 | ||
172 | outw( 0x10, port ); | |
173 | } | |
174 | ||
175 | ||
176 | static inline void gemtek_pci_mute( struct gemtek_pci_card *card ) | |
177 | { | |
178 | outb( 0x1f, card->iobase ); | |
fd4bc445 | 179 | card->mute = true; |
1da177e4 LT |
180 | } |
181 | ||
182 | static inline void gemtek_pci_unmute( struct gemtek_pci_card *card ) | |
183 | { | |
184 | if ( card->mute ) { | |
185 | gemtek_pci_setfrequency( card, card->current_frequency ); | |
fd4bc445 | 186 | card->mute = false; |
1da177e4 LT |
187 | } |
188 | } | |
189 | ||
190 | static inline unsigned int gemtek_pci_getsignal( struct gemtek_pci_card *card ) | |
191 | { | |
192 | return ( inb( card->iobase ) & 0x08 ) ? 0 : 1; | |
193 | } | |
194 | ||
6f66446c DL |
195 | static int vidioc_querycap(struct file *file, void *priv, |
196 | struct v4l2_capability *v) | |
197 | { | |
198 | strlcpy(v->driver, "radio-gemtek-pci", sizeof(v->driver)); | |
199 | strlcpy(v->card, "GemTek PCI Radio", sizeof(v->card)); | |
200 | sprintf(v->bus_info, "ISA"); | |
201 | v->version = RADIO_VERSION; | |
202 | v->capabilities = V4L2_CAP_TUNER; | |
203 | return 0; | |
204 | } | |
205 | ||
206 | static int vidioc_g_tuner(struct file *file, void *priv, | |
207 | struct v4l2_tuner *v) | |
1da177e4 LT |
208 | { |
209 | struct video_device *dev = video_devdata(file); | |
210 | struct gemtek_pci_card *card = dev->priv; | |
211 | ||
6f66446c DL |
212 | if (v->index > 0) |
213 | return -EINVAL; | |
214 | ||
215 | strcpy(v->name, "FM"); | |
216 | v->type = V4L2_TUNER_RADIO; | |
217 | v->rangelow = GEMTEK_PCI_RANGE_LOW; | |
218 | v->rangehigh = GEMTEK_PCI_RANGE_HIGH; | |
219 | v->rxsubchans = V4L2_TUNER_SUB_MONO; | |
220 | v->capability = V4L2_TUNER_CAP_LOW; | |
221 | v->audmode = V4L2_TUNER_MODE_MONO; | |
222 | v->signal = 0xffff * gemtek_pci_getsignal(card); | |
223 | return 0; | |
224 | } | |
1da177e4 | 225 | |
6f66446c DL |
226 | static int vidioc_s_tuner(struct file *file, void *priv, |
227 | struct v4l2_tuner *v) | |
228 | { | |
229 | if (v->index > 0) | |
230 | return -EINVAL; | |
231 | return 0; | |
232 | } | |
1da177e4 | 233 | |
6f66446c DL |
234 | static int vidioc_s_frequency(struct file *file, void *priv, |
235 | struct v4l2_frequency *f) | |
236 | { | |
237 | struct video_device *dev = video_devdata(file); | |
238 | struct gemtek_pci_card *card = dev->priv; | |
52afbc2f | 239 | |
6f66446c DL |
240 | if ( (f->frequency < GEMTEK_PCI_RANGE_LOW) || |
241 | (f->frequency > GEMTEK_PCI_RANGE_HIGH) ) | |
242 | return -EINVAL; | |
243 | gemtek_pci_setfrequency(card, f->frequency); | |
244 | card->current_frequency = f->frequency; | |
245 | card->mute = false; | |
246 | return 0; | |
247 | } | |
52afbc2f | 248 | |
6f66446c DL |
249 | static int vidioc_g_frequency(struct file *file, void *priv, |
250 | struct v4l2_frequency *f) | |
251 | { | |
252 | struct video_device *dev = video_devdata(file); | |
253 | struct gemtek_pci_card *card = dev->priv; | |
52afbc2f | 254 | |
6f66446c DL |
255 | f->type = V4L2_TUNER_RADIO; |
256 | f->frequency = card->current_frequency; | |
257 | return 0; | |
258 | } | |
1da177e4 | 259 | |
6f66446c DL |
260 | static int vidioc_queryctrl(struct file *file, void *priv, |
261 | struct v4l2_queryctrl *qc) | |
262 | { | |
263 | int i; | |
264 | for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) { | |
265 | if (qc->id && qc->id == radio_qctrl[i].id) { | |
266 | memcpy(qc, &(radio_qctrl[i]), | |
267 | sizeof(*qc)); | |
1da177e4 LT |
268 | return 0; |
269 | } | |
6f66446c DL |
270 | } |
271 | return -EINVAL; | |
272 | } | |
273 | ||
274 | static int vidioc_g_ctrl(struct file *file, void *priv, | |
275 | struct v4l2_control *ctrl) | |
276 | { | |
277 | struct video_device *dev = video_devdata(file); | |
278 | struct gemtek_pci_card *card = dev->priv; | |
4286c6f6 | 279 | |
6f66446c DL |
280 | switch (ctrl->id) { |
281 | case V4L2_CID_AUDIO_MUTE: | |
282 | ctrl->value = card->mute; | |
283 | return 0; | |
284 | case V4L2_CID_AUDIO_VOLUME: | |
285 | if (card->mute) | |
286 | ctrl->value = 0; | |
287 | else | |
288 | ctrl->value = 65535; | |
289 | return 0; | |
290 | } | |
291 | return -EINVAL; | |
292 | } | |
1da177e4 | 293 | |
6f66446c DL |
294 | static int vidioc_s_ctrl(struct file *file, void *priv, |
295 | struct v4l2_control *ctrl) | |
296 | { | |
297 | struct video_device *dev = video_devdata(file); | |
298 | struct gemtek_pci_card *card = dev->priv; | |
1da177e4 | 299 | |
6f66446c DL |
300 | switch (ctrl->id) { |
301 | case V4L2_CID_AUDIO_MUTE: | |
302 | if (ctrl->value) | |
303 | gemtek_pci_mute(card); | |
304 | else | |
305 | gemtek_pci_unmute(card); | |
306 | return 0; | |
307 | case V4L2_CID_AUDIO_VOLUME: | |
308 | if (ctrl->value) | |
309 | gemtek_pci_unmute(card); | |
310 | else | |
311 | gemtek_pci_mute(card); | |
312 | return 0; | |
1da177e4 | 313 | } |
6f66446c DL |
314 | return -EINVAL; |
315 | } | |
316 | ||
317 | static int vidioc_g_audio(struct file *file, void *priv, | |
318 | struct v4l2_audio *a) | |
319 | { | |
320 | if (a->index > 1) | |
321 | return -EINVAL; | |
322 | ||
323 | strcpy(a->name, "Radio"); | |
324 | a->capability = V4L2_AUDCAP_STEREO; | |
325 | return 0; | |
326 | } | |
327 | ||
328 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) | |
329 | { | |
330 | *i = 0; | |
331 | return 0; | |
332 | } | |
333 | ||
334 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
335 | { | |
336 | if (i != 0) | |
337 | return -EINVAL; | |
338 | return 0; | |
1da177e4 LT |
339 | } |
340 | ||
6f66446c DL |
341 | static int vidioc_s_audio(struct file *file, void *priv, |
342 | struct v4l2_audio *a) | |
1da177e4 | 343 | { |
6f66446c DL |
344 | if (a->index != 0) |
345 | return -EINVAL; | |
346 | return 0; | |
1da177e4 LT |
347 | } |
348 | ||
349 | enum { | |
350 | GEMTEK_PR103 | |
351 | }; | |
352 | ||
353 | static char *card_names[] __devinitdata = { | |
354 | "GEMTEK_PR103" | |
355 | }; | |
356 | ||
357 | static struct pci_device_id gemtek_pci_id[] = | |
358 | { | |
359 | { PCI_VENDOR_ID_GEMTEK, PCI_DEVICE_ID_GEMTEK_PR103, | |
360 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, GEMTEK_PR103 }, | |
361 | { 0 } | |
362 | }; | |
363 | ||
364 | MODULE_DEVICE_TABLE( pci, gemtek_pci_id ); | |
365 | ||
366 | static int mx = 1; | |
367 | ||
fa027c2a | 368 | static const struct file_operations gemtek_pci_fops = { |
1da177e4 LT |
369 | .owner = THIS_MODULE, |
370 | .open = video_exclusive_open, | |
371 | .release = video_exclusive_release, | |
6f66446c | 372 | .ioctl = video_ioctl2, |
0d0fbf81 | 373 | .compat_ioctl = v4l_compat_ioctl32, |
1da177e4 LT |
374 | .llseek = no_llseek, |
375 | }; | |
376 | ||
377 | static struct video_device vdev_template = { | |
378 | .owner = THIS_MODULE, | |
379 | .name = "Gemtek PCI Radio", | |
380 | .type = VID_TYPE_TUNER, | |
52afbc2f | 381 | .hardware = 0, |
1da177e4 | 382 | .fops = &gemtek_pci_fops, |
6f66446c DL |
383 | .vidioc_querycap = vidioc_querycap, |
384 | .vidioc_g_tuner = vidioc_g_tuner, | |
385 | .vidioc_s_tuner = vidioc_s_tuner, | |
386 | .vidioc_g_audio = vidioc_g_audio, | |
387 | .vidioc_s_audio = vidioc_s_audio, | |
388 | .vidioc_g_input = vidioc_g_input, | |
389 | .vidioc_s_input = vidioc_s_input, | |
390 | .vidioc_g_frequency = vidioc_g_frequency, | |
391 | .vidioc_s_frequency = vidioc_s_frequency, | |
392 | .vidioc_queryctrl = vidioc_queryctrl, | |
393 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
394 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
1da177e4 LT |
395 | }; |
396 | ||
397 | static int __devinit gemtek_pci_probe( struct pci_dev *pci_dev, const struct pci_device_id *pci_id ) | |
398 | { | |
399 | struct gemtek_pci_card *card; | |
400 | struct video_device *devradio; | |
401 | ||
7408187d | 402 | if ( (card = kzalloc( sizeof( struct gemtek_pci_card ), GFP_KERNEL )) == NULL ) { |
1da177e4 LT |
403 | printk( KERN_ERR "gemtek_pci: out of memory\n" ); |
404 | return -ENOMEM; | |
405 | } | |
1da177e4 | 406 | |
4286c6f6 | 407 | if ( pci_enable_device( pci_dev ) ) |
1da177e4 | 408 | goto err_pci; |
4286c6f6 | 409 | |
1da177e4 LT |
410 | card->iobase = pci_resource_start( pci_dev, 0 ); |
411 | card->length = pci_resource_len( pci_dev, 0 ); | |
412 | ||
413 | if ( request_region( card->iobase, card->length, card_names[pci_id->driver_data] ) == NULL ) { | |
414 | printk( KERN_ERR "gemtek_pci: i/o port already in use\n" ); | |
415 | goto err_pci; | |
416 | } | |
417 | ||
418 | pci_read_config_byte( pci_dev, PCI_REVISION_ID, &card->chiprev ); | |
419 | pci_read_config_word( pci_dev, PCI_SUBSYSTEM_ID, &card->model ); | |
420 | ||
421 | pci_set_drvdata( pci_dev, card ); | |
4286c6f6 | 422 | |
1da177e4 LT |
423 | if ( (devradio = kmalloc( sizeof( struct video_device ), GFP_KERNEL )) == NULL ) { |
424 | printk( KERN_ERR "gemtek_pci: out of memory\n" ); | |
425 | goto err_video; | |
426 | } | |
427 | *devradio = vdev_template; | |
428 | ||
429 | if ( video_register_device( devradio, VFL_TYPE_RADIO , nr_radio) == -1 ) { | |
430 | kfree( devradio ); | |
431 | goto err_video; | |
432 | } | |
433 | ||
434 | card->videodev = devradio; | |
435 | devradio->priv = card; | |
436 | gemtek_pci_mute( card ); | |
437 | ||
4286c6f6 | 438 | printk( KERN_INFO "Gemtek PCI Radio (rev. %d) found at 0x%04x-0x%04x.\n", |
1da177e4 LT |
439 | card->chiprev, card->iobase, card->iobase + card->length - 1 ); |
440 | ||
441 | return 0; | |
442 | ||
443 | err_video: | |
444 | release_region( card->iobase, card->length ); | |
445 | ||
446 | err_pci: | |
447 | kfree( card ); | |
4286c6f6 | 448 | return -ENODEV; |
1da177e4 LT |
449 | } |
450 | ||
451 | static void __devexit gemtek_pci_remove( struct pci_dev *pci_dev ) | |
452 | { | |
453 | struct gemtek_pci_card *card = pci_get_drvdata( pci_dev ); | |
454 | ||
455 | video_unregister_device( card->videodev ); | |
456 | kfree( card->videodev ); | |
457 | ||
458 | release_region( card->iobase, card->length ); | |
4286c6f6 | 459 | |
1da177e4 LT |
460 | if ( mx ) |
461 | gemtek_pci_mute( card ); | |
462 | ||
463 | kfree( card ); | |
4286c6f6 | 464 | |
1da177e4 LT |
465 | pci_set_drvdata( pci_dev, NULL ); |
466 | } | |
467 | ||
468 | static struct pci_driver gemtek_pci_driver = | |
469 | { | |
470 | .name = "gemtek_pci", | |
471 | .id_table = gemtek_pci_id, | |
472 | .probe = gemtek_pci_probe, | |
473 | .remove = __devexit_p(gemtek_pci_remove), | |
474 | }; | |
475 | ||
476 | static int __init gemtek_pci_init_module( void ) | |
477 | { | |
9bfab8ce | 478 | return pci_register_driver( &gemtek_pci_driver ); |
1da177e4 LT |
479 | } |
480 | ||
481 | static void __exit gemtek_pci_cleanup_module( void ) | |
482 | { | |
13962753 | 483 | pci_unregister_driver(&gemtek_pci_driver); |
1da177e4 LT |
484 | } |
485 | ||
486 | MODULE_AUTHOR( "Vladimir Shebordaev <vshebordaev@mail.ru>" ); | |
487 | MODULE_DESCRIPTION( "The video4linux driver for the Gemtek PCI Radio Card" ); | |
488 | MODULE_LICENSE("GPL"); | |
489 | ||
490 | module_param(mx, bool, 0); | |
491 | MODULE_PARM_DESC( mx, "single digit: 1 - turn off the turner upon module exit (default), 0 - do not" ); | |
492 | module_param(nr_radio, int, 0); | |
493 | MODULE_PARM_DESC( nr_radio, "video4linux device number to use"); | |
494 | ||
495 | module_init( gemtek_pci_init_module ); | |
496 | module_exit( gemtek_pci_cleanup_module ); | |
497 |