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Commit | Line | Data |
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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> |
35ea11ff | 49 | #include <media/v4l2-ioctl.h> |
1da177e4 LT |
50 | #include <linux/errno.h> |
51 | ||
52afbc2f MCC |
52 | #include <linux/version.h> /* for KERNEL_VERSION MACRO */ |
53 | #define RADIO_VERSION KERNEL_VERSION(0,0,2) | |
54 | ||
55 | static struct v4l2_queryctrl radio_qctrl[] = { | |
56 | { | |
57 | .id = V4L2_CID_AUDIO_MUTE, | |
58 | .name = "Mute", | |
59 | .minimum = 0, | |
60 | .maximum = 1, | |
61 | .default_value = 1, | |
62 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
63 | },{ | |
64 | .id = V4L2_CID_AUDIO_VOLUME, | |
65 | .name = "Volume", | |
66 | .minimum = 0, | |
67 | .maximum = 65535, | |
68 | .step = 65535, | |
69 | .default_value = 0xff, | |
70 | .type = V4L2_CTRL_TYPE_INTEGER, | |
71 | } | |
72 | }; | |
73 | ||
1da177e4 LT |
74 | #include <asm/io.h> |
75 | #include <asm/uaccess.h> | |
76 | ||
77 | #ifndef PCI_VENDOR_ID_GEMTEK | |
78 | #define PCI_VENDOR_ID_GEMTEK 0x5046 | |
79 | #endif | |
80 | ||
81 | #ifndef PCI_DEVICE_ID_GEMTEK_PR103 | |
82 | #define PCI_DEVICE_ID_GEMTEK_PR103 0x1001 | |
83 | #endif | |
84 | ||
85 | #ifndef GEMTEK_PCI_RANGE_LOW | |
86 | #define GEMTEK_PCI_RANGE_LOW (87*16000) | |
87 | #endif | |
88 | ||
89 | #ifndef GEMTEK_PCI_RANGE_HIGH | |
90 | #define GEMTEK_PCI_RANGE_HIGH (108*16000) | |
91 | #endif | |
92 | ||
1da177e4 LT |
93 | struct gemtek_pci_card { |
94 | struct video_device *videodev; | |
4286c6f6 | 95 | |
1da177e4 LT |
96 | u32 iobase; |
97 | u32 length; | |
4286c6f6 | 98 | |
1da177e4 LT |
99 | u32 current_frequency; |
100 | u8 mute; | |
101 | }; | |
102 | ||
103 | static const char rcsid[] = "$Id: radio-gemtek-pci.c,v 1.1 2001/07/23 08:08:16 ted Exp ted $"; | |
104 | ||
105 | static int nr_radio = -1; | |
106 | ||
107 | static inline u8 gemtek_pci_out( u16 value, u32 port ) | |
108 | { | |
109 | outw( value, port ); | |
110 | ||
111 | return (u8)value; | |
112 | } | |
113 | ||
4286c6f6 | 114 | #define _b0( v ) *((u8 *)&v) |
1da177e4 LT |
115 | static void __gemtek_pci_cmd( u16 value, u32 port, u8 *last_byte, int keep ) |
116 | { | |
117 | register u8 byte = *last_byte; | |
118 | ||
119 | if ( !value ) { | |
120 | if ( !keep ) | |
121 | value = (u16)port; | |
4286c6f6 | 122 | byte &= 0xfd; |
1da177e4 LT |
123 | } else |
124 | byte |= 2; | |
125 | ||
126 | _b0( value ) = byte; | |
127 | outw( value, port ); | |
128 | byte |= 1; | |
129 | _b0( value ) = byte; | |
130 | outw( value, port ); | |
131 | byte &= 0xfe; | |
132 | _b0( value ) = byte; | |
133 | outw( value, port ); | |
4286c6f6 | 134 | |
1da177e4 LT |
135 | *last_byte = byte; |
136 | } | |
137 | ||
138 | static inline void gemtek_pci_nil( u32 port, u8 *last_byte ) | |
139 | { | |
fd4bc445 | 140 | __gemtek_pci_cmd( 0x00, port, last_byte, false ); |
1da177e4 LT |
141 | } |
142 | ||
143 | static inline void gemtek_pci_cmd( u16 cmd, u32 port, u8 *last_byte ) | |
144 | { | |
fd4bc445 | 145 | __gemtek_pci_cmd( cmd, port, last_byte, true ); |
1da177e4 LT |
146 | } |
147 | ||
148 | static void gemtek_pci_setfrequency( struct gemtek_pci_card *card, unsigned long frequency ) | |
149 | { | |
150 | register int i; | |
151 | register u32 value = frequency / 200 + 856; | |
152 | register u16 mask = 0x8000; | |
153 | u8 last_byte; | |
154 | u32 port = card->iobase; | |
155 | ||
156 | last_byte = gemtek_pci_out( 0x06, port ); | |
157 | ||
158 | i = 0; | |
159 | do { | |
160 | gemtek_pci_nil( port, &last_byte ); | |
161 | i++; | |
162 | } while ( i < 9 ); | |
163 | ||
164 | i = 0; | |
165 | do { | |
166 | gemtek_pci_cmd( value & mask, port, &last_byte ); | |
167 | mask >>= 1; | |
168 | i++; | |
169 | } while ( i < 16 ); | |
170 | ||
171 | outw( 0x10, port ); | |
172 | } | |
173 | ||
174 | ||
175 | static inline void gemtek_pci_mute( struct gemtek_pci_card *card ) | |
176 | { | |
177 | outb( 0x1f, card->iobase ); | |
fd4bc445 | 178 | card->mute = true; |
1da177e4 LT |
179 | } |
180 | ||
181 | static inline void gemtek_pci_unmute( struct gemtek_pci_card *card ) | |
182 | { | |
183 | if ( card->mute ) { | |
184 | gemtek_pci_setfrequency( card, card->current_frequency ); | |
fd4bc445 | 185 | card->mute = false; |
1da177e4 LT |
186 | } |
187 | } | |
188 | ||
189 | static inline unsigned int gemtek_pci_getsignal( struct gemtek_pci_card *card ) | |
190 | { | |
191 | return ( inb( card->iobase ) & 0x08 ) ? 0 : 1; | |
192 | } | |
193 | ||
6f66446c DL |
194 | static int vidioc_querycap(struct file *file, void *priv, |
195 | struct v4l2_capability *v) | |
196 | { | |
197 | strlcpy(v->driver, "radio-gemtek-pci", sizeof(v->driver)); | |
198 | strlcpy(v->card, "GemTek PCI Radio", sizeof(v->card)); | |
199 | sprintf(v->bus_info, "ISA"); | |
200 | v->version = RADIO_VERSION; | |
201 | v->capabilities = V4L2_CAP_TUNER; | |
202 | return 0; | |
203 | } | |
204 | ||
205 | static int vidioc_g_tuner(struct file *file, void *priv, | |
206 | struct v4l2_tuner *v) | |
1da177e4 LT |
207 | { |
208 | struct video_device *dev = video_devdata(file); | |
209 | struct gemtek_pci_card *card = dev->priv; | |
210 | ||
6f66446c DL |
211 | if (v->index > 0) |
212 | return -EINVAL; | |
213 | ||
214 | strcpy(v->name, "FM"); | |
215 | v->type = V4L2_TUNER_RADIO; | |
216 | v->rangelow = GEMTEK_PCI_RANGE_LOW; | |
217 | v->rangehigh = GEMTEK_PCI_RANGE_HIGH; | |
218 | v->rxsubchans = V4L2_TUNER_SUB_MONO; | |
219 | v->capability = V4L2_TUNER_CAP_LOW; | |
220 | v->audmode = V4L2_TUNER_MODE_MONO; | |
221 | v->signal = 0xffff * gemtek_pci_getsignal(card); | |
222 | return 0; | |
223 | } | |
1da177e4 | 224 | |
6f66446c DL |
225 | static int vidioc_s_tuner(struct file *file, void *priv, |
226 | struct v4l2_tuner *v) | |
227 | { | |
228 | if (v->index > 0) | |
229 | return -EINVAL; | |
230 | return 0; | |
231 | } | |
1da177e4 | 232 | |
6f66446c DL |
233 | static int vidioc_s_frequency(struct file *file, void *priv, |
234 | struct v4l2_frequency *f) | |
235 | { | |
236 | struct video_device *dev = video_devdata(file); | |
237 | struct gemtek_pci_card *card = dev->priv; | |
52afbc2f | 238 | |
6f66446c DL |
239 | if ( (f->frequency < GEMTEK_PCI_RANGE_LOW) || |
240 | (f->frequency > GEMTEK_PCI_RANGE_HIGH) ) | |
241 | return -EINVAL; | |
242 | gemtek_pci_setfrequency(card, f->frequency); | |
243 | card->current_frequency = f->frequency; | |
244 | card->mute = false; | |
245 | return 0; | |
246 | } | |
52afbc2f | 247 | |
6f66446c DL |
248 | static int vidioc_g_frequency(struct file *file, void *priv, |
249 | struct v4l2_frequency *f) | |
250 | { | |
251 | struct video_device *dev = video_devdata(file); | |
252 | struct gemtek_pci_card *card = dev->priv; | |
52afbc2f | 253 | |
6f66446c DL |
254 | f->type = V4L2_TUNER_RADIO; |
255 | f->frequency = card->current_frequency; | |
256 | return 0; | |
257 | } | |
1da177e4 | 258 | |
6f66446c DL |
259 | static int vidioc_queryctrl(struct file *file, void *priv, |
260 | struct v4l2_queryctrl *qc) | |
261 | { | |
262 | int i; | |
263 | for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) { | |
264 | if (qc->id && qc->id == radio_qctrl[i].id) { | |
265 | memcpy(qc, &(radio_qctrl[i]), | |
266 | sizeof(*qc)); | |
1da177e4 LT |
267 | return 0; |
268 | } | |
6f66446c DL |
269 | } |
270 | return -EINVAL; | |
271 | } | |
272 | ||
273 | static int vidioc_g_ctrl(struct file *file, void *priv, | |
274 | struct v4l2_control *ctrl) | |
275 | { | |
276 | struct video_device *dev = video_devdata(file); | |
277 | struct gemtek_pci_card *card = dev->priv; | |
4286c6f6 | 278 | |
6f66446c DL |
279 | switch (ctrl->id) { |
280 | case V4L2_CID_AUDIO_MUTE: | |
281 | ctrl->value = card->mute; | |
282 | return 0; | |
283 | case V4L2_CID_AUDIO_VOLUME: | |
284 | if (card->mute) | |
285 | ctrl->value = 0; | |
286 | else | |
287 | ctrl->value = 65535; | |
288 | return 0; | |
289 | } | |
290 | return -EINVAL; | |
291 | } | |
1da177e4 | 292 | |
6f66446c DL |
293 | static int vidioc_s_ctrl(struct file *file, void *priv, |
294 | struct v4l2_control *ctrl) | |
295 | { | |
296 | struct video_device *dev = video_devdata(file); | |
297 | struct gemtek_pci_card *card = dev->priv; | |
1da177e4 | 298 | |
6f66446c DL |
299 | switch (ctrl->id) { |
300 | case V4L2_CID_AUDIO_MUTE: | |
301 | if (ctrl->value) | |
302 | gemtek_pci_mute(card); | |
303 | else | |
304 | gemtek_pci_unmute(card); | |
305 | return 0; | |
306 | case V4L2_CID_AUDIO_VOLUME: | |
307 | if (ctrl->value) | |
308 | gemtek_pci_unmute(card); | |
309 | else | |
310 | gemtek_pci_mute(card); | |
311 | return 0; | |
1da177e4 | 312 | } |
6f66446c DL |
313 | return -EINVAL; |
314 | } | |
315 | ||
316 | static int vidioc_g_audio(struct file *file, void *priv, | |
317 | struct v4l2_audio *a) | |
318 | { | |
319 | if (a->index > 1) | |
320 | return -EINVAL; | |
321 | ||
322 | strcpy(a->name, "Radio"); | |
323 | a->capability = V4L2_AUDCAP_STEREO; | |
324 | return 0; | |
325 | } | |
326 | ||
327 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) | |
328 | { | |
329 | *i = 0; | |
330 | return 0; | |
331 | } | |
332 | ||
333 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
334 | { | |
335 | if (i != 0) | |
336 | return -EINVAL; | |
337 | return 0; | |
1da177e4 LT |
338 | } |
339 | ||
6f66446c DL |
340 | static int vidioc_s_audio(struct file *file, void *priv, |
341 | struct v4l2_audio *a) | |
1da177e4 | 342 | { |
6f66446c DL |
343 | if (a->index != 0) |
344 | return -EINVAL; | |
345 | return 0; | |
1da177e4 LT |
346 | } |
347 | ||
348 | enum { | |
349 | GEMTEK_PR103 | |
350 | }; | |
351 | ||
352 | static char *card_names[] __devinitdata = { | |
353 | "GEMTEK_PR103" | |
354 | }; | |
355 | ||
356 | static struct pci_device_id gemtek_pci_id[] = | |
357 | { | |
358 | { PCI_VENDOR_ID_GEMTEK, PCI_DEVICE_ID_GEMTEK_PR103, | |
359 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, GEMTEK_PR103 }, | |
360 | { 0 } | |
361 | }; | |
362 | ||
363 | MODULE_DEVICE_TABLE( pci, gemtek_pci_id ); | |
364 | ||
365 | static int mx = 1; | |
366 | ||
fa027c2a | 367 | static const struct file_operations gemtek_pci_fops = { |
1da177e4 LT |
368 | .owner = THIS_MODULE, |
369 | .open = video_exclusive_open, | |
370 | .release = video_exclusive_release, | |
6f66446c | 371 | .ioctl = video_ioctl2, |
078ff795 | 372 | #ifdef CONFIG_COMPAT |
0d0fbf81 | 373 | .compat_ioctl = v4l_compat_ioctl32, |
078ff795 | 374 | #endif |
1da177e4 LT |
375 | .llseek = no_llseek, |
376 | }; | |
377 | ||
378 | static struct video_device vdev_template = { | |
379 | .owner = THIS_MODULE, | |
380 | .name = "Gemtek PCI Radio", | |
381 | .type = VID_TYPE_TUNER, | |
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 | ||
1da177e4 | 418 | pci_set_drvdata( pci_dev, card ); |
4286c6f6 | 419 | |
1da177e4 LT |
420 | if ( (devradio = kmalloc( sizeof( struct video_device ), GFP_KERNEL )) == NULL ) { |
421 | printk( KERN_ERR "gemtek_pci: out of memory\n" ); | |
422 | goto err_video; | |
423 | } | |
424 | *devradio = vdev_template; | |
425 | ||
426 | if ( video_register_device( devradio, VFL_TYPE_RADIO , nr_radio) == -1 ) { | |
427 | kfree( devradio ); | |
428 | goto err_video; | |
429 | } | |
430 | ||
431 | card->videodev = devradio; | |
432 | devradio->priv = card; | |
433 | gemtek_pci_mute( card ); | |
434 | ||
4286c6f6 | 435 | printk( KERN_INFO "Gemtek PCI Radio (rev. %d) found at 0x%04x-0x%04x.\n", |
44c10138 | 436 | pci_dev->revision, card->iobase, card->iobase + card->length - 1 ); |
1da177e4 LT |
437 | |
438 | return 0; | |
439 | ||
440 | err_video: | |
441 | release_region( card->iobase, card->length ); | |
442 | ||
443 | err_pci: | |
444 | kfree( card ); | |
4286c6f6 | 445 | return -ENODEV; |
1da177e4 LT |
446 | } |
447 | ||
448 | static void __devexit gemtek_pci_remove( struct pci_dev *pci_dev ) | |
449 | { | |
450 | struct gemtek_pci_card *card = pci_get_drvdata( pci_dev ); | |
451 | ||
452 | video_unregister_device( card->videodev ); | |
453 | kfree( card->videodev ); | |
454 | ||
455 | release_region( card->iobase, card->length ); | |
4286c6f6 | 456 | |
1da177e4 LT |
457 | if ( mx ) |
458 | gemtek_pci_mute( card ); | |
459 | ||
460 | kfree( card ); | |
4286c6f6 | 461 | |
1da177e4 LT |
462 | pci_set_drvdata( pci_dev, NULL ); |
463 | } | |
464 | ||
465 | static struct pci_driver gemtek_pci_driver = | |
466 | { | |
467 | .name = "gemtek_pci", | |
468 | .id_table = gemtek_pci_id, | |
469 | .probe = gemtek_pci_probe, | |
470 | .remove = __devexit_p(gemtek_pci_remove), | |
471 | }; | |
472 | ||
473 | static int __init gemtek_pci_init_module( void ) | |
474 | { | |
9bfab8ce | 475 | return pci_register_driver( &gemtek_pci_driver ); |
1da177e4 LT |
476 | } |
477 | ||
478 | static void __exit gemtek_pci_cleanup_module( void ) | |
479 | { | |
13962753 | 480 | pci_unregister_driver(&gemtek_pci_driver); |
1da177e4 LT |
481 | } |
482 | ||
483 | MODULE_AUTHOR( "Vladimir Shebordaev <vshebordaev@mail.ru>" ); | |
484 | MODULE_DESCRIPTION( "The video4linux driver for the Gemtek PCI Radio Card" ); | |
485 | MODULE_LICENSE("GPL"); | |
486 | ||
487 | module_param(mx, bool, 0); | |
488 | MODULE_PARM_DESC( mx, "single digit: 1 - turn off the turner upon module exit (default), 0 - do not" ); | |
489 | module_param(nr_radio, int, 0); | |
490 | MODULE_PARM_DESC( nr_radio, "video4linux device number to use"); | |
491 | ||
492 | module_init( gemtek_pci_init_module ); | |
493 | module_exit( gemtek_pci_cleanup_module ); | |
494 |