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> |
1da177e4 | 48 | #include <linux/errno.h> |
52afbc2f | 49 | #include <linux/version.h> /* for KERNEL_VERSION MACRO */ |
79f94878 | 50 | #include <linux/io.h> |
79f94878 HV |
51 | #include <media/v4l2-device.h> |
52 | #include <media/v4l2-ioctl.h> | |
52afbc2f | 53 | |
79f94878 HV |
54 | MODULE_AUTHOR("Vladimir Shebordaev <vshebordaev@mail.ru>"); |
55 | MODULE_DESCRIPTION("The video4linux driver for the Gemtek PCI Radio Card"); | |
56 | MODULE_LICENSE("GPL"); | |
57 | ||
58 | static int nr_radio = -1; | |
59 | static int mx = 1; | |
60 | ||
61 | module_param(mx, bool, 0); | |
62 | MODULE_PARM_DESC(mx, "single digit: 1 - turn off the turner upon module exit (default), 0 - do not"); | |
63 | module_param(nr_radio, int, 0); | |
64 | MODULE_PARM_DESC(nr_radio, "video4linux device number to use"); | |
65 | ||
66 | #define RADIO_VERSION KERNEL_VERSION(0, 0, 2) | |
1da177e4 LT |
67 | |
68 | #ifndef PCI_VENDOR_ID_GEMTEK | |
69 | #define PCI_VENDOR_ID_GEMTEK 0x5046 | |
70 | #endif | |
71 | ||
72 | #ifndef PCI_DEVICE_ID_GEMTEK_PR103 | |
73 | #define PCI_DEVICE_ID_GEMTEK_PR103 0x1001 | |
74 | #endif | |
75 | ||
76 | #ifndef GEMTEK_PCI_RANGE_LOW | |
77 | #define GEMTEK_PCI_RANGE_LOW (87*16000) | |
78 | #endif | |
79 | ||
80 | #ifndef GEMTEK_PCI_RANGE_HIGH | |
81 | #define GEMTEK_PCI_RANGE_HIGH (108*16000) | |
82 | #endif | |
83 | ||
79f94878 HV |
84 | struct gemtek_pci { |
85 | struct v4l2_device v4l2_dev; | |
86 | struct video_device vdev; | |
87 | struct mutex lock; | |
88 | struct pci_dev *pdev; | |
4286c6f6 | 89 | |
1da177e4 LT |
90 | u32 iobase; |
91 | u32 length; | |
4286c6f6 | 92 | |
1da177e4 LT |
93 | u32 current_frequency; |
94 | u8 mute; | |
95 | }; | |
96 | ||
79f94878 HV |
97 | static inline struct gemtek_pci *to_gemtek_pci(struct v4l2_device *v4l2_dev) |
98 | { | |
99 | return container_of(v4l2_dev, struct gemtek_pci, v4l2_dev); | |
100 | } | |
1da177e4 | 101 | |
79f94878 | 102 | static inline u8 gemtek_pci_out(u16 value, u32 port) |
1da177e4 | 103 | { |
79f94878 | 104 | outw(value, port); |
1da177e4 LT |
105 | |
106 | return (u8)value; | |
107 | } | |
108 | ||
79f94878 HV |
109 | #define _b0(v) (*((u8 *)&v)) |
110 | ||
111 | static void __gemtek_pci_cmd(u16 value, u32 port, u8 *last_byte, int keep) | |
1da177e4 | 112 | { |
79f94878 | 113 | u8 byte = *last_byte; |
1da177e4 | 114 | |
79f94878 HV |
115 | if (!value) { |
116 | if (!keep) | |
1da177e4 | 117 | value = (u16)port; |
4286c6f6 | 118 | byte &= 0xfd; |
1da177e4 LT |
119 | } else |
120 | byte |= 2; | |
121 | ||
79f94878 HV |
122 | _b0(value) = byte; |
123 | outw(value, port); | |
1da177e4 | 124 | byte |= 1; |
79f94878 HV |
125 | _b0(value) = byte; |
126 | outw(value, port); | |
1da177e4 | 127 | byte &= 0xfe; |
79f94878 HV |
128 | _b0(value) = byte; |
129 | outw(value, port); | |
4286c6f6 | 130 | |
1da177e4 LT |
131 | *last_byte = byte; |
132 | } | |
133 | ||
79f94878 | 134 | static inline void gemtek_pci_nil(u32 port, u8 *last_byte) |
1da177e4 | 135 | { |
79f94878 | 136 | __gemtek_pci_cmd(0x00, port, last_byte, false); |
1da177e4 LT |
137 | } |
138 | ||
79f94878 | 139 | static inline void gemtek_pci_cmd(u16 cmd, u32 port, u8 *last_byte) |
1da177e4 | 140 | { |
79f94878 | 141 | __gemtek_pci_cmd(cmd, port, last_byte, true); |
1da177e4 LT |
142 | } |
143 | ||
79f94878 | 144 | static void gemtek_pci_setfrequency(struct gemtek_pci *card, unsigned long frequency) |
1da177e4 | 145 | { |
79f94878 HV |
146 | int i; |
147 | u32 value = frequency / 200 + 856; | |
148 | u16 mask = 0x8000; | |
1da177e4 LT |
149 | u8 last_byte; |
150 | u32 port = card->iobase; | |
151 | ||
79f94878 HV |
152 | mutex_lock(&card->lock); |
153 | card->current_frequency = frequency; | |
154 | last_byte = gemtek_pci_out(0x06, port); | |
1da177e4 LT |
155 | |
156 | i = 0; | |
157 | do { | |
79f94878 | 158 | gemtek_pci_nil(port, &last_byte); |
1da177e4 | 159 | i++; |
79f94878 | 160 | } while (i < 9); |
1da177e4 LT |
161 | |
162 | i = 0; | |
163 | do { | |
79f94878 | 164 | gemtek_pci_cmd(value & mask, port, &last_byte); |
1da177e4 LT |
165 | mask >>= 1; |
166 | i++; | |
79f94878 | 167 | } while (i < 16); |
1da177e4 | 168 | |
79f94878 HV |
169 | outw(0x10, port); |
170 | mutex_unlock(&card->lock); | |
1da177e4 LT |
171 | } |
172 | ||
173 | ||
79f94878 | 174 | static void gemtek_pci_mute(struct gemtek_pci *card) |
1da177e4 | 175 | { |
79f94878 HV |
176 | mutex_lock(&card->lock); |
177 | outb(0x1f, card->iobase); | |
fd4bc445 | 178 | card->mute = true; |
79f94878 | 179 | mutex_unlock(&card->lock); |
1da177e4 LT |
180 | } |
181 | ||
79f94878 | 182 | static void gemtek_pci_unmute(struct gemtek_pci *card) |
1da177e4 | 183 | { |
79f94878 HV |
184 | mutex_lock(&card->lock); |
185 | if (card->mute) { | |
186 | gemtek_pci_setfrequency(card, card->current_frequency); | |
fd4bc445 | 187 | card->mute = false; |
1da177e4 | 188 | } |
79f94878 | 189 | mutex_unlock(&card->lock); |
1da177e4 LT |
190 | } |
191 | ||
79f94878 | 192 | static int gemtek_pci_getsignal(struct gemtek_pci *card) |
1da177e4 | 193 | { |
79f94878 HV |
194 | int sig; |
195 | ||
196 | mutex_lock(&card->lock); | |
197 | sig = (inb(card->iobase) & 0x08) ? 0 : 1; | |
198 | mutex_unlock(&card->lock); | |
199 | return sig; | |
1da177e4 LT |
200 | } |
201 | ||
6f66446c DL |
202 | static int vidioc_querycap(struct file *file, void *priv, |
203 | struct v4l2_capability *v) | |
204 | { | |
79f94878 HV |
205 | struct gemtek_pci *card = video_drvdata(file); |
206 | ||
6f66446c DL |
207 | strlcpy(v->driver, "radio-gemtek-pci", sizeof(v->driver)); |
208 | strlcpy(v->card, "GemTek PCI Radio", sizeof(v->card)); | |
79f94878 | 209 | snprintf(v->bus_info, sizeof(v->bus_info), "PCI:%s", pci_name(card->pdev)); |
6f66446c | 210 | v->version = RADIO_VERSION; |
79f94878 | 211 | v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO; |
6f66446c DL |
212 | return 0; |
213 | } | |
214 | ||
215 | static int vidioc_g_tuner(struct file *file, void *priv, | |
216 | struct v4l2_tuner *v) | |
1da177e4 | 217 | { |
79f94878 | 218 | struct gemtek_pci *card = video_drvdata(file); |
1da177e4 | 219 | |
6f66446c DL |
220 | if (v->index > 0) |
221 | return -EINVAL; | |
222 | ||
79f94878 | 223 | strlcpy(v->name, "FM", sizeof(v->name)); |
6f66446c DL |
224 | v->type = V4L2_TUNER_RADIO; |
225 | v->rangelow = GEMTEK_PCI_RANGE_LOW; | |
226 | v->rangehigh = GEMTEK_PCI_RANGE_HIGH; | |
227 | v->rxsubchans = V4L2_TUNER_SUB_MONO; | |
228 | v->capability = V4L2_TUNER_CAP_LOW; | |
229 | v->audmode = V4L2_TUNER_MODE_MONO; | |
230 | v->signal = 0xffff * gemtek_pci_getsignal(card); | |
231 | return 0; | |
232 | } | |
1da177e4 | 233 | |
6f66446c DL |
234 | static int vidioc_s_tuner(struct file *file, void *priv, |
235 | struct v4l2_tuner *v) | |
236 | { | |
79f94878 | 237 | return v->index ? -EINVAL : 0; |
6f66446c | 238 | } |
1da177e4 | 239 | |
6f66446c DL |
240 | static int vidioc_s_frequency(struct file *file, void *priv, |
241 | struct v4l2_frequency *f) | |
242 | { | |
79f94878 | 243 | struct gemtek_pci *card = video_drvdata(file); |
52afbc2f | 244 | |
79f94878 HV |
245 | if (f->frequency < GEMTEK_PCI_RANGE_LOW || |
246 | f->frequency > GEMTEK_PCI_RANGE_HIGH) | |
6f66446c DL |
247 | return -EINVAL; |
248 | gemtek_pci_setfrequency(card, f->frequency); | |
6f66446c DL |
249 | card->mute = false; |
250 | return 0; | |
251 | } | |
52afbc2f | 252 | |
6f66446c DL |
253 | static int vidioc_g_frequency(struct file *file, void *priv, |
254 | struct v4l2_frequency *f) | |
255 | { | |
79f94878 | 256 | struct gemtek_pci *card = video_drvdata(file); |
52afbc2f | 257 | |
6f66446c DL |
258 | f->type = V4L2_TUNER_RADIO; |
259 | f->frequency = card->current_frequency; | |
260 | return 0; | |
261 | } | |
1da177e4 | 262 | |
6f66446c DL |
263 | static int vidioc_queryctrl(struct file *file, void *priv, |
264 | struct v4l2_queryctrl *qc) | |
265 | { | |
79f94878 HV |
266 | switch (qc->id) { |
267 | case V4L2_CID_AUDIO_MUTE: | |
268 | return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); | |
269 | case V4L2_CID_AUDIO_VOLUME: | |
270 | return v4l2_ctrl_query_fill(qc, 0, 65535, 65535, 65535); | |
6f66446c DL |
271 | } |
272 | return -EINVAL; | |
273 | } | |
274 | ||
275 | static int vidioc_g_ctrl(struct file *file, void *priv, | |
276 | struct v4l2_control *ctrl) | |
277 | { | |
79f94878 | 278 | struct gemtek_pci *card = video_drvdata(file); |
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 | { | |
79f94878 | 297 | struct gemtek_pci *card = video_drvdata(file); |
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 | ||
6f66446c DL |
316 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) |
317 | { | |
318 | *i = 0; | |
319 | return 0; | |
320 | } | |
321 | ||
322 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
323 | { | |
79f94878 HV |
324 | return i ? -EINVAL : 0; |
325 | } | |
326 | ||
327 | static int vidioc_g_audio(struct file *file, void *priv, | |
328 | struct v4l2_audio *a) | |
329 | { | |
330 | a->index = 0; | |
331 | strlcpy(a->name, "Radio", sizeof(a->name)); | |
332 | a->capability = V4L2_AUDCAP_STEREO; | |
6f66446c | 333 | return 0; |
1da177e4 LT |
334 | } |
335 | ||
6f66446c DL |
336 | static int vidioc_s_audio(struct file *file, void *priv, |
337 | struct v4l2_audio *a) | |
1da177e4 | 338 | { |
79f94878 | 339 | return a->index ? -EINVAL : 0; |
1da177e4 LT |
340 | } |
341 | ||
342 | enum { | |
343 | GEMTEK_PR103 | |
344 | }; | |
345 | ||
346 | static char *card_names[] __devinitdata = { | |
347 | "GEMTEK_PR103" | |
348 | }; | |
349 | ||
350 | static struct pci_device_id gemtek_pci_id[] = | |
351 | { | |
352 | { PCI_VENDOR_ID_GEMTEK, PCI_DEVICE_ID_GEMTEK_PR103, | |
353 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, GEMTEK_PR103 }, | |
354 | { 0 } | |
355 | }; | |
356 | ||
79f94878 | 357 | MODULE_DEVICE_TABLE(pci, gemtek_pci_id); |
1da177e4 | 358 | |
bec43661 | 359 | static const struct v4l2_file_operations gemtek_pci_fops = { |
1da177e4 | 360 | .owner = THIS_MODULE, |
6f66446c | 361 | .ioctl = video_ioctl2, |
1da177e4 LT |
362 | }; |
363 | ||
a399810c | 364 | static const struct v4l2_ioctl_ops gemtek_pci_ioctl_ops = { |
6f66446c DL |
365 | .vidioc_querycap = vidioc_querycap, |
366 | .vidioc_g_tuner = vidioc_g_tuner, | |
367 | .vidioc_s_tuner = vidioc_s_tuner, | |
368 | .vidioc_g_audio = vidioc_g_audio, | |
369 | .vidioc_s_audio = vidioc_s_audio, | |
370 | .vidioc_g_input = vidioc_g_input, | |
371 | .vidioc_s_input = vidioc_s_input, | |
372 | .vidioc_g_frequency = vidioc_g_frequency, | |
373 | .vidioc_s_frequency = vidioc_s_frequency, | |
374 | .vidioc_queryctrl = vidioc_queryctrl, | |
375 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
376 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
1da177e4 LT |
377 | }; |
378 | ||
79f94878 | 379 | static int __devinit gemtek_pci_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id) |
1da177e4 | 380 | { |
79f94878 HV |
381 | struct gemtek_pci *card; |
382 | struct v4l2_device *v4l2_dev; | |
383 | int res; | |
1da177e4 | 384 | |
79f94878 HV |
385 | card = kzalloc(sizeof(struct gemtek_pci), GFP_KERNEL); |
386 | if (card == NULL) { | |
387 | dev_err(&pdev->dev, "out of memory\n"); | |
1da177e4 LT |
388 | return -ENOMEM; |
389 | } | |
1da177e4 | 390 | |
79f94878 HV |
391 | v4l2_dev = &card->v4l2_dev; |
392 | mutex_init(&card->lock); | |
393 | card->pdev = pdev; | |
4286c6f6 | 394 | |
79f94878 | 395 | strlcpy(v4l2_dev->name, "gemtek_pci", sizeof(v4l2_dev->name)); |
1da177e4 | 396 | |
79f94878 HV |
397 | res = v4l2_device_register(&pdev->dev, v4l2_dev); |
398 | if (res < 0) { | |
399 | v4l2_err(v4l2_dev, "Could not register v4l2_device\n"); | |
400 | kfree(card); | |
401 | return res; | |
1da177e4 LT |
402 | } |
403 | ||
79f94878 HV |
404 | if (pci_enable_device(pdev)) |
405 | goto err_pci; | |
4286c6f6 | 406 | |
79f94878 HV |
407 | card->iobase = pci_resource_start(pdev, 0); |
408 | card->length = pci_resource_len(pdev, 0); | |
409 | ||
410 | if (request_region(card->iobase, card->length, card_names[pci_id->driver_data]) == NULL) { | |
411 | v4l2_err(v4l2_dev, "i/o port already in use\n"); | |
412 | goto err_pci; | |
1da177e4 | 413 | } |
1da177e4 | 414 | |
79f94878 HV |
415 | strlcpy(card->vdev.name, v4l2_dev->name, sizeof(card->vdev.name)); |
416 | card->vdev.v4l2_dev = v4l2_dev; | |
417 | card->vdev.fops = &gemtek_pci_fops; | |
418 | card->vdev.ioctl_ops = &gemtek_pci_ioctl_ops; | |
419 | card->vdev.release = video_device_release_empty; | |
420 | video_set_drvdata(&card->vdev, card); | |
421 | ||
422 | if (video_register_device(&card->vdev, VFL_TYPE_RADIO, nr_radio) < 0) | |
1da177e4 | 423 | goto err_video; |
1da177e4 | 424 | |
79f94878 | 425 | gemtek_pci_mute(card); |
1da177e4 | 426 | |
79f94878 HV |
427 | v4l2_info(v4l2_dev, "Gemtek PCI Radio (rev. %d) found at 0x%04x-0x%04x.\n", |
428 | pdev->revision, card->iobase, card->iobase + card->length - 1); | |
1da177e4 LT |
429 | |
430 | return 0; | |
431 | ||
432 | err_video: | |
79f94878 | 433 | release_region(card->iobase, card->length); |
1da177e4 LT |
434 | |
435 | err_pci: | |
79f94878 HV |
436 | v4l2_device_unregister(v4l2_dev); |
437 | kfree(card); | |
4286c6f6 | 438 | return -ENODEV; |
1da177e4 LT |
439 | } |
440 | ||
79f94878 | 441 | static void __devexit gemtek_pci_remove(struct pci_dev *pdev) |
1da177e4 | 442 | { |
79f94878 HV |
443 | struct v4l2_device *v4l2_dev = dev_get_drvdata(&pdev->dev); |
444 | struct gemtek_pci *card = to_gemtek_pci(v4l2_dev); | |
1da177e4 | 445 | |
79f94878 HV |
446 | video_unregister_device(&card->vdev); |
447 | v4l2_device_unregister(v4l2_dev); | |
1da177e4 | 448 | |
79f94878 | 449 | release_region(card->iobase, card->length); |
4286c6f6 | 450 | |
79f94878 HV |
451 | if (mx) |
452 | gemtek_pci_mute(card); | |
1da177e4 | 453 | |
79f94878 | 454 | kfree(card); |
1da177e4 LT |
455 | } |
456 | ||
79f94878 | 457 | static struct pci_driver gemtek_pci_driver = { |
1da177e4 LT |
458 | .name = "gemtek_pci", |
459 | .id_table = gemtek_pci_id, | |
460 | .probe = gemtek_pci_probe, | |
461 | .remove = __devexit_p(gemtek_pci_remove), | |
462 | }; | |
463 | ||
79f94878 | 464 | static int __init gemtek_pci_init(void) |
1da177e4 | 465 | { |
79f94878 | 466 | return pci_register_driver(&gemtek_pci_driver); |
1da177e4 LT |
467 | } |
468 | ||
79f94878 | 469 | static void __exit gemtek_pci_exit(void) |
1da177e4 | 470 | { |
13962753 | 471 | pci_unregister_driver(&gemtek_pci_driver); |
1da177e4 LT |
472 | } |
473 | ||
79f94878 HV |
474 | module_init(gemtek_pci_init); |
475 | module_exit(gemtek_pci_exit); |