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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> |
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 | ||
92 | #ifndef TRUE | |
93 | #define TRUE (1) | |
94 | #endif | |
95 | ||
4286c6f6 | 96 | #ifndef FALSE |
1da177e4 LT |
97 | #define FALSE (0) |
98 | #endif | |
99 | ||
100 | struct gemtek_pci_card { | |
101 | struct video_device *videodev; | |
4286c6f6 | 102 | |
1da177e4 LT |
103 | u32 iobase; |
104 | u32 length; | |
105 | u8 chiprev; | |
106 | u16 model; | |
4286c6f6 | 107 | |
1da177e4 LT |
108 | u32 current_frequency; |
109 | u8 mute; | |
110 | }; | |
111 | ||
112 | static const char rcsid[] = "$Id: radio-gemtek-pci.c,v 1.1 2001/07/23 08:08:16 ted Exp ted $"; | |
113 | ||
114 | static int nr_radio = -1; | |
115 | ||
116 | static inline u8 gemtek_pci_out( u16 value, u32 port ) | |
117 | { | |
118 | outw( value, port ); | |
119 | ||
120 | return (u8)value; | |
121 | } | |
122 | ||
4286c6f6 | 123 | #define _b0( v ) *((u8 *)&v) |
1da177e4 LT |
124 | static void __gemtek_pci_cmd( u16 value, u32 port, u8 *last_byte, int keep ) |
125 | { | |
126 | register u8 byte = *last_byte; | |
127 | ||
128 | if ( !value ) { | |
129 | if ( !keep ) | |
130 | value = (u16)port; | |
4286c6f6 | 131 | byte &= 0xfd; |
1da177e4 LT |
132 | } else |
133 | byte |= 2; | |
134 | ||
135 | _b0( value ) = byte; | |
136 | outw( value, port ); | |
137 | byte |= 1; | |
138 | _b0( value ) = byte; | |
139 | outw( value, port ); | |
140 | byte &= 0xfe; | |
141 | _b0( value ) = byte; | |
142 | outw( value, port ); | |
4286c6f6 | 143 | |
1da177e4 LT |
144 | *last_byte = byte; |
145 | } | |
146 | ||
147 | static inline void gemtek_pci_nil( u32 port, u8 *last_byte ) | |
148 | { | |
149 | __gemtek_pci_cmd( 0x00, port, last_byte, FALSE ); | |
150 | } | |
151 | ||
152 | static inline void gemtek_pci_cmd( u16 cmd, u32 port, u8 *last_byte ) | |
153 | { | |
154 | __gemtek_pci_cmd( cmd, port, last_byte, TRUE ); | |
155 | } | |
156 | ||
157 | static void gemtek_pci_setfrequency( struct gemtek_pci_card *card, unsigned long frequency ) | |
158 | { | |
159 | register int i; | |
160 | register u32 value = frequency / 200 + 856; | |
161 | register u16 mask = 0x8000; | |
162 | u8 last_byte; | |
163 | u32 port = card->iobase; | |
164 | ||
165 | last_byte = gemtek_pci_out( 0x06, port ); | |
166 | ||
167 | i = 0; | |
168 | do { | |
169 | gemtek_pci_nil( port, &last_byte ); | |
170 | i++; | |
171 | } while ( i < 9 ); | |
172 | ||
173 | i = 0; | |
174 | do { | |
175 | gemtek_pci_cmd( value & mask, port, &last_byte ); | |
176 | mask >>= 1; | |
177 | i++; | |
178 | } while ( i < 16 ); | |
179 | ||
180 | outw( 0x10, port ); | |
181 | } | |
182 | ||
183 | ||
184 | static inline void gemtek_pci_mute( struct gemtek_pci_card *card ) | |
185 | { | |
186 | outb( 0x1f, card->iobase ); | |
187 | card->mute = TRUE; | |
188 | } | |
189 | ||
190 | static inline void gemtek_pci_unmute( struct gemtek_pci_card *card ) | |
191 | { | |
192 | if ( card->mute ) { | |
193 | gemtek_pci_setfrequency( card, card->current_frequency ); | |
194 | card->mute = FALSE; | |
195 | } | |
196 | } | |
197 | ||
198 | static inline unsigned int gemtek_pci_getsignal( struct gemtek_pci_card *card ) | |
199 | { | |
200 | return ( inb( card->iobase ) & 0x08 ) ? 0 : 1; | |
201 | } | |
202 | ||
203 | static int gemtek_pci_do_ioctl(struct inode *inode, struct file *file, | |
204 | unsigned int cmd, void *arg) | |
205 | { | |
206 | struct video_device *dev = video_devdata(file); | |
207 | struct gemtek_pci_card *card = dev->priv; | |
208 | ||
209 | switch ( cmd ) { | |
52afbc2f | 210 | case VIDIOC_QUERYCAP: |
1da177e4 | 211 | { |
52afbc2f MCC |
212 | struct v4l2_capability *v = arg; |
213 | memset(v,0,sizeof(*v)); | |
214 | strlcpy(v->driver, "radio-gemtek-pci", sizeof (v->driver)); | |
215 | strlcpy(v->card, "GemTek PCI Radio", sizeof (v->card)); | |
216 | sprintf(v->bus_info,"ISA"); | |
217 | v->version = RADIO_VERSION; | |
218 | v->capabilities = V4L2_CAP_TUNER; | |
1da177e4 | 219 | |
1da177e4 | 220 | return 0; |
4286c6f6 | 221 | } |
52afbc2f | 222 | case VIDIOC_G_TUNER: |
1da177e4 | 223 | { |
52afbc2f | 224 | struct v4l2_tuner *v = arg; |
1da177e4 | 225 | |
52afbc2f | 226 | if (v->index > 0) |
1da177e4 LT |
227 | return -EINVAL; |
228 | ||
52afbc2f MCC |
229 | memset(v,0,sizeof(*v)); |
230 | strcpy(v->name, "FM"); | |
231 | v->type = V4L2_TUNER_RADIO; | |
232 | ||
233 | v->rangelow = GEMTEK_PCI_RANGE_LOW; | |
234 | v->rangehigh = GEMTEK_PCI_RANGE_HIGH; | |
235 | v->rxsubchans =V4L2_TUNER_SUB_MONO; | |
236 | v->capability=V4L2_TUNER_CAP_LOW; | |
237 | v->audmode = V4L2_TUNER_MODE_MONO; | |
238 | v->signal=0xFFFF*gemtek_pci_getsignal( card ); | |
239 | ||
1da177e4 LT |
240 | return 0; |
241 | } | |
52afbc2f | 242 | case VIDIOC_S_TUNER: |
1da177e4 | 243 | { |
52afbc2f MCC |
244 | struct v4l2_tuner *v = arg; |
245 | ||
246 | if (v->index > 0) | |
1da177e4 | 247 | return -EINVAL; |
1da177e4 | 248 | |
1da177e4 LT |
249 | return 0; |
250 | } | |
52afbc2f | 251 | case VIDIOC_S_FREQUENCY: |
1da177e4 | 252 | { |
52afbc2f | 253 | struct v4l2_frequency *f = arg; |
4286c6f6 | 254 | |
52afbc2f MCC |
255 | if ( (f->frequency < GEMTEK_PCI_RANGE_LOW) || |
256 | (f->frequency > GEMTEK_PCI_RANGE_HIGH) ) | |
1da177e4 LT |
257 | return -EINVAL; |
258 | ||
1da177e4 | 259 | |
52afbc2f MCC |
260 | gemtek_pci_setfrequency( card, f->frequency ); |
261 | card->current_frequency = f->frequency; | |
262 | card->mute = FALSE; | |
1da177e4 LT |
263 | return 0; |
264 | } | |
52afbc2f | 265 | case VIDIOC_QUERYCTRL: |
4286c6f6 | 266 | { |
52afbc2f MCC |
267 | struct v4l2_queryctrl *qc = arg; |
268 | int i; | |
269 | ||
270 | for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) { | |
271 | if (qc->id && qc->id == radio_qctrl[i].id) { | |
272 | memcpy(qc, &(radio_qctrl[i]), | |
273 | sizeof(*qc)); | |
274 | return (0); | |
275 | } | |
276 | } | |
277 | return -EINVAL; | |
1da177e4 | 278 | } |
52afbc2f | 279 | case VIDIOC_G_CTRL: |
1da177e4 | 280 | { |
52afbc2f MCC |
281 | struct v4l2_control *ctrl= arg; |
282 | ||
283 | switch (ctrl->id) { | |
284 | case V4L2_CID_AUDIO_MUTE: | |
285 | ctrl->value=card->mute; | |
286 | return (0); | |
287 | case V4L2_CID_AUDIO_VOLUME: | |
288 | if (card->mute) | |
289 | ctrl->value=0; | |
290 | else | |
291 | ctrl->value=65535; | |
292 | return (0); | |
293 | } | |
294 | return -EINVAL; | |
295 | } | |
296 | case VIDIOC_S_CTRL: | |
297 | { | |
298 | struct v4l2_control *ctrl= arg; | |
299 | ||
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 | } | |
307 | return (0); | |
308 | case V4L2_CID_AUDIO_VOLUME: | |
309 | if (ctrl->value) { | |
310 | gemtek_pci_unmute(card); | |
311 | } else { | |
312 | gemtek_pci_mute(card); | |
313 | } | |
314 | return (0); | |
315 | } | |
316 | return -EINVAL; | |
1da177e4 | 317 | } |
1da177e4 | 318 | default: |
52afbc2f | 319 | return v4l_compat_translate_ioctl(inode,file,cmd,arg, |
3ca57169 | 320 | gemtek_pci_do_ioctl); |
1da177e4 LT |
321 | } |
322 | } | |
323 | ||
324 | static int gemtek_pci_ioctl(struct inode *inode, struct file *file, | |
325 | unsigned int cmd, unsigned long arg) | |
326 | { | |
327 | return video_usercopy(inode, file, cmd, arg, gemtek_pci_do_ioctl); | |
328 | } | |
329 | ||
330 | enum { | |
331 | GEMTEK_PR103 | |
332 | }; | |
333 | ||
334 | static char *card_names[] __devinitdata = { | |
335 | "GEMTEK_PR103" | |
336 | }; | |
337 | ||
338 | static struct pci_device_id gemtek_pci_id[] = | |
339 | { | |
340 | { PCI_VENDOR_ID_GEMTEK, PCI_DEVICE_ID_GEMTEK_PR103, | |
341 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, GEMTEK_PR103 }, | |
342 | { 0 } | |
343 | }; | |
344 | ||
345 | MODULE_DEVICE_TABLE( pci, gemtek_pci_id ); | |
346 | ||
347 | static int mx = 1; | |
348 | ||
349 | static struct file_operations gemtek_pci_fops = { | |
350 | .owner = THIS_MODULE, | |
351 | .open = video_exclusive_open, | |
352 | .release = video_exclusive_release, | |
353 | .ioctl = gemtek_pci_ioctl, | |
0d0fbf81 | 354 | .compat_ioctl = v4l_compat_ioctl32, |
1da177e4 LT |
355 | .llseek = no_llseek, |
356 | }; | |
357 | ||
358 | static struct video_device vdev_template = { | |
359 | .owner = THIS_MODULE, | |
360 | .name = "Gemtek PCI Radio", | |
361 | .type = VID_TYPE_TUNER, | |
52afbc2f | 362 | .hardware = 0, |
1da177e4 LT |
363 | .fops = &gemtek_pci_fops, |
364 | }; | |
365 | ||
366 | static int __devinit gemtek_pci_probe( struct pci_dev *pci_dev, const struct pci_device_id *pci_id ) | |
367 | { | |
368 | struct gemtek_pci_card *card; | |
369 | struct video_device *devradio; | |
370 | ||
7408187d | 371 | if ( (card = kzalloc( sizeof( struct gemtek_pci_card ), GFP_KERNEL )) == NULL ) { |
1da177e4 LT |
372 | printk( KERN_ERR "gemtek_pci: out of memory\n" ); |
373 | return -ENOMEM; | |
374 | } | |
1da177e4 | 375 | |
4286c6f6 | 376 | if ( pci_enable_device( pci_dev ) ) |
1da177e4 | 377 | goto err_pci; |
4286c6f6 | 378 | |
1da177e4 LT |
379 | card->iobase = pci_resource_start( pci_dev, 0 ); |
380 | card->length = pci_resource_len( pci_dev, 0 ); | |
381 | ||
382 | if ( request_region( card->iobase, card->length, card_names[pci_id->driver_data] ) == NULL ) { | |
383 | printk( KERN_ERR "gemtek_pci: i/o port already in use\n" ); | |
384 | goto err_pci; | |
385 | } | |
386 | ||
387 | pci_read_config_byte( pci_dev, PCI_REVISION_ID, &card->chiprev ); | |
388 | pci_read_config_word( pci_dev, PCI_SUBSYSTEM_ID, &card->model ); | |
389 | ||
390 | pci_set_drvdata( pci_dev, card ); | |
4286c6f6 | 391 | |
1da177e4 LT |
392 | if ( (devradio = kmalloc( sizeof( struct video_device ), GFP_KERNEL )) == NULL ) { |
393 | printk( KERN_ERR "gemtek_pci: out of memory\n" ); | |
394 | goto err_video; | |
395 | } | |
396 | *devradio = vdev_template; | |
397 | ||
398 | if ( video_register_device( devradio, VFL_TYPE_RADIO , nr_radio) == -1 ) { | |
399 | kfree( devradio ); | |
400 | goto err_video; | |
401 | } | |
402 | ||
403 | card->videodev = devradio; | |
404 | devradio->priv = card; | |
405 | gemtek_pci_mute( card ); | |
406 | ||
4286c6f6 | 407 | printk( KERN_INFO "Gemtek PCI Radio (rev. %d) found at 0x%04x-0x%04x.\n", |
1da177e4 LT |
408 | card->chiprev, card->iobase, card->iobase + card->length - 1 ); |
409 | ||
410 | return 0; | |
411 | ||
412 | err_video: | |
413 | release_region( card->iobase, card->length ); | |
414 | ||
415 | err_pci: | |
416 | kfree( card ); | |
4286c6f6 | 417 | return -ENODEV; |
1da177e4 LT |
418 | } |
419 | ||
420 | static void __devexit gemtek_pci_remove( struct pci_dev *pci_dev ) | |
421 | { | |
422 | struct gemtek_pci_card *card = pci_get_drvdata( pci_dev ); | |
423 | ||
424 | video_unregister_device( card->videodev ); | |
425 | kfree( card->videodev ); | |
426 | ||
427 | release_region( card->iobase, card->length ); | |
4286c6f6 | 428 | |
1da177e4 LT |
429 | if ( mx ) |
430 | gemtek_pci_mute( card ); | |
431 | ||
432 | kfree( card ); | |
4286c6f6 | 433 | |
1da177e4 LT |
434 | pci_set_drvdata( pci_dev, NULL ); |
435 | } | |
436 | ||
437 | static struct pci_driver gemtek_pci_driver = | |
438 | { | |
439 | .name = "gemtek_pci", | |
440 | .id_table = gemtek_pci_id, | |
441 | .probe = gemtek_pci_probe, | |
442 | .remove = __devexit_p(gemtek_pci_remove), | |
443 | }; | |
444 | ||
445 | static int __init gemtek_pci_init_module( void ) | |
446 | { | |
9bfab8ce | 447 | return pci_register_driver( &gemtek_pci_driver ); |
1da177e4 LT |
448 | } |
449 | ||
450 | static void __exit gemtek_pci_cleanup_module( void ) | |
451 | { | |
452 | return pci_unregister_driver( &gemtek_pci_driver ); | |
453 | } | |
454 | ||
455 | MODULE_AUTHOR( "Vladimir Shebordaev <vshebordaev@mail.ru>" ); | |
456 | MODULE_DESCRIPTION( "The video4linux driver for the Gemtek PCI Radio Card" ); | |
457 | MODULE_LICENSE("GPL"); | |
458 | ||
459 | module_param(mx, bool, 0); | |
460 | MODULE_PARM_DESC( mx, "single digit: 1 - turn off the turner upon module exit (default), 0 - do not" ); | |
461 | module_param(nr_radio, int, 0); | |
462 | MODULE_PARM_DESC( nr_radio, "video4linux device number to use"); | |
463 | ||
464 | module_init( gemtek_pci_init_module ); | |
465 | module_exit( gemtek_pci_cleanup_module ); | |
466 |