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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> |
1da177e4 | 48 | #include <linux/errno.h> |
52afbc2f | 49 | #include <linux/version.h> /* for KERNEL_VERSION MACRO */ |
79f94878 | 50 | #include <linux/io.h> |
5a0e3ad6 | 51 | #include <linux/slab.h> |
79f94878 HV |
52 | #include <media/v4l2-device.h> |
53 | #include <media/v4l2-ioctl.h> | |
52afbc2f | 54 | |
79f94878 HV |
55 | MODULE_AUTHOR("Vladimir Shebordaev <vshebordaev@mail.ru>"); |
56 | MODULE_DESCRIPTION("The video4linux driver for the Gemtek PCI Radio Card"); | |
57 | MODULE_LICENSE("GPL"); | |
58 | ||
59 | static int nr_radio = -1; | |
60 | static int mx = 1; | |
61 | ||
62 | module_param(mx, bool, 0); | |
63 | MODULE_PARM_DESC(mx, "single digit: 1 - turn off the turner upon module exit (default), 0 - do not"); | |
64 | module_param(nr_radio, int, 0); | |
65 | MODULE_PARM_DESC(nr_radio, "video4linux device number to use"); | |
66 | ||
67 | #define RADIO_VERSION KERNEL_VERSION(0, 0, 2) | |
1da177e4 LT |
68 | |
69 | #ifndef PCI_VENDOR_ID_GEMTEK | |
70 | #define PCI_VENDOR_ID_GEMTEK 0x5046 | |
71 | #endif | |
72 | ||
73 | #ifndef PCI_DEVICE_ID_GEMTEK_PR103 | |
74 | #define PCI_DEVICE_ID_GEMTEK_PR103 0x1001 | |
75 | #endif | |
76 | ||
77 | #ifndef GEMTEK_PCI_RANGE_LOW | |
78 | #define GEMTEK_PCI_RANGE_LOW (87*16000) | |
79 | #endif | |
80 | ||
81 | #ifndef GEMTEK_PCI_RANGE_HIGH | |
82 | #define GEMTEK_PCI_RANGE_HIGH (108*16000) | |
83 | #endif | |
84 | ||
79f94878 HV |
85 | struct gemtek_pci { |
86 | struct v4l2_device v4l2_dev; | |
87 | struct video_device vdev; | |
88 | struct mutex lock; | |
89 | struct pci_dev *pdev; | |
4286c6f6 | 90 | |
1da177e4 LT |
91 | u32 iobase; |
92 | u32 length; | |
4286c6f6 | 93 | |
1da177e4 LT |
94 | u32 current_frequency; |
95 | u8 mute; | |
96 | }; | |
97 | ||
79f94878 HV |
98 | static inline struct gemtek_pci *to_gemtek_pci(struct v4l2_device *v4l2_dev) |
99 | { | |
100 | return container_of(v4l2_dev, struct gemtek_pci, v4l2_dev); | |
101 | } | |
1da177e4 | 102 | |
79f94878 | 103 | static inline u8 gemtek_pci_out(u16 value, u32 port) |
1da177e4 | 104 | { |
79f94878 | 105 | outw(value, port); |
1da177e4 LT |
106 | |
107 | return (u8)value; | |
108 | } | |
109 | ||
79f94878 HV |
110 | #define _b0(v) (*((u8 *)&v)) |
111 | ||
112 | static void __gemtek_pci_cmd(u16 value, u32 port, u8 *last_byte, int keep) | |
1da177e4 | 113 | { |
79f94878 | 114 | u8 byte = *last_byte; |
1da177e4 | 115 | |
79f94878 HV |
116 | if (!value) { |
117 | if (!keep) | |
1da177e4 | 118 | value = (u16)port; |
4286c6f6 | 119 | byte &= 0xfd; |
1da177e4 LT |
120 | } else |
121 | byte |= 2; | |
122 | ||
79f94878 HV |
123 | _b0(value) = byte; |
124 | outw(value, port); | |
1da177e4 | 125 | byte |= 1; |
79f94878 HV |
126 | _b0(value) = byte; |
127 | outw(value, port); | |
1da177e4 | 128 | byte &= 0xfe; |
79f94878 HV |
129 | _b0(value) = byte; |
130 | outw(value, port); | |
4286c6f6 | 131 | |
1da177e4 LT |
132 | *last_byte = byte; |
133 | } | |
134 | ||
79f94878 | 135 | static inline void gemtek_pci_nil(u32 port, u8 *last_byte) |
1da177e4 | 136 | { |
79f94878 | 137 | __gemtek_pci_cmd(0x00, port, last_byte, false); |
1da177e4 LT |
138 | } |
139 | ||
79f94878 | 140 | static inline void gemtek_pci_cmd(u16 cmd, u32 port, u8 *last_byte) |
1da177e4 | 141 | { |
79f94878 | 142 | __gemtek_pci_cmd(cmd, port, last_byte, true); |
1da177e4 LT |
143 | } |
144 | ||
79f94878 | 145 | static void gemtek_pci_setfrequency(struct gemtek_pci *card, unsigned long frequency) |
1da177e4 | 146 | { |
79f94878 HV |
147 | int i; |
148 | u32 value = frequency / 200 + 856; | |
149 | u16 mask = 0x8000; | |
1da177e4 LT |
150 | u8 last_byte; |
151 | u32 port = card->iobase; | |
152 | ||
79f94878 HV |
153 | mutex_lock(&card->lock); |
154 | card->current_frequency = frequency; | |
155 | last_byte = gemtek_pci_out(0x06, port); | |
1da177e4 LT |
156 | |
157 | i = 0; | |
158 | do { | |
79f94878 | 159 | gemtek_pci_nil(port, &last_byte); |
1da177e4 | 160 | i++; |
79f94878 | 161 | } while (i < 9); |
1da177e4 LT |
162 | |
163 | i = 0; | |
164 | do { | |
79f94878 | 165 | gemtek_pci_cmd(value & mask, port, &last_byte); |
1da177e4 LT |
166 | mask >>= 1; |
167 | i++; | |
79f94878 | 168 | } while (i < 16); |
1da177e4 | 169 | |
79f94878 HV |
170 | outw(0x10, port); |
171 | mutex_unlock(&card->lock); | |
1da177e4 LT |
172 | } |
173 | ||
174 | ||
79f94878 | 175 | static void gemtek_pci_mute(struct gemtek_pci *card) |
1da177e4 | 176 | { |
79f94878 HV |
177 | mutex_lock(&card->lock); |
178 | outb(0x1f, card->iobase); | |
fd4bc445 | 179 | card->mute = true; |
79f94878 | 180 | mutex_unlock(&card->lock); |
1da177e4 LT |
181 | } |
182 | ||
79f94878 | 183 | static void gemtek_pci_unmute(struct gemtek_pci *card) |
1da177e4 | 184 | { |
79f94878 HV |
185 | if (card->mute) { |
186 | gemtek_pci_setfrequency(card, card->current_frequency); | |
fd4bc445 | 187 | card->mute = false; |
1da177e4 LT |
188 | } |
189 | } | |
190 | ||
79f94878 | 191 | static int gemtek_pci_getsignal(struct gemtek_pci *card) |
1da177e4 | 192 | { |
79f94878 HV |
193 | int sig; |
194 | ||
195 | mutex_lock(&card->lock); | |
196 | sig = (inb(card->iobase) & 0x08) ? 0 : 1; | |
197 | mutex_unlock(&card->lock); | |
198 | return sig; | |
1da177e4 LT |
199 | } |
200 | ||
6f66446c DL |
201 | static int vidioc_querycap(struct file *file, void *priv, |
202 | struct v4l2_capability *v) | |
203 | { | |
79f94878 HV |
204 | struct gemtek_pci *card = video_drvdata(file); |
205 | ||
6f66446c DL |
206 | strlcpy(v->driver, "radio-gemtek-pci", sizeof(v->driver)); |
207 | strlcpy(v->card, "GemTek PCI Radio", sizeof(v->card)); | |
79f94878 | 208 | snprintf(v->bus_info, sizeof(v->bus_info), "PCI:%s", pci_name(card->pdev)); |
6f66446c | 209 | v->version = RADIO_VERSION; |
79f94878 | 210 | v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO; |
6f66446c DL |
211 | return 0; |
212 | } | |
213 | ||
214 | static int vidioc_g_tuner(struct file *file, void *priv, | |
215 | struct v4l2_tuner *v) | |
1da177e4 | 216 | { |
79f94878 | 217 | struct gemtek_pci *card = video_drvdata(file); |
1da177e4 | 218 | |
6f66446c DL |
219 | if (v->index > 0) |
220 | return -EINVAL; | |
221 | ||
79f94878 | 222 | strlcpy(v->name, "FM", sizeof(v->name)); |
6f66446c DL |
223 | v->type = V4L2_TUNER_RADIO; |
224 | v->rangelow = GEMTEK_PCI_RANGE_LOW; | |
225 | v->rangehigh = GEMTEK_PCI_RANGE_HIGH; | |
226 | v->rxsubchans = V4L2_TUNER_SUB_MONO; | |
227 | v->capability = V4L2_TUNER_CAP_LOW; | |
228 | v->audmode = V4L2_TUNER_MODE_MONO; | |
229 | v->signal = 0xffff * gemtek_pci_getsignal(card); | |
230 | return 0; | |
231 | } | |
1da177e4 | 232 | |
6f66446c DL |
233 | static int vidioc_s_tuner(struct file *file, void *priv, |
234 | struct v4l2_tuner *v) | |
235 | { | |
79f94878 | 236 | return v->index ? -EINVAL : 0; |
6f66446c | 237 | } |
1da177e4 | 238 | |
6f66446c DL |
239 | static int vidioc_s_frequency(struct file *file, void *priv, |
240 | struct v4l2_frequency *f) | |
241 | { | |
79f94878 | 242 | struct gemtek_pci *card = video_drvdata(file); |
52afbc2f | 243 | |
a3a9e287 HV |
244 | if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) |
245 | return -EINVAL; | |
79f94878 HV |
246 | if (f->frequency < GEMTEK_PCI_RANGE_LOW || |
247 | f->frequency > GEMTEK_PCI_RANGE_HIGH) | |
6f66446c DL |
248 | return -EINVAL; |
249 | gemtek_pci_setfrequency(card, f->frequency); | |
6f66446c DL |
250 | card->mute = false; |
251 | return 0; | |
252 | } | |
52afbc2f | 253 | |
6f66446c DL |
254 | static int vidioc_g_frequency(struct file *file, void *priv, |
255 | struct v4l2_frequency *f) | |
256 | { | |
79f94878 | 257 | struct gemtek_pci *card = video_drvdata(file); |
52afbc2f | 258 | |
a3a9e287 HV |
259 | if (f->tuner != 0) |
260 | return -EINVAL; | |
6f66446c DL |
261 | f->type = V4L2_TUNER_RADIO; |
262 | f->frequency = card->current_frequency; | |
263 | return 0; | |
264 | } | |
1da177e4 | 265 | |
6f66446c DL |
266 | static int vidioc_queryctrl(struct file *file, void *priv, |
267 | struct v4l2_queryctrl *qc) | |
268 | { | |
79f94878 HV |
269 | switch (qc->id) { |
270 | case V4L2_CID_AUDIO_MUTE: | |
271 | return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); | |
272 | case V4L2_CID_AUDIO_VOLUME: | |
273 | return v4l2_ctrl_query_fill(qc, 0, 65535, 65535, 65535); | |
6f66446c DL |
274 | } |
275 | return -EINVAL; | |
276 | } | |
277 | ||
278 | static int vidioc_g_ctrl(struct file *file, void *priv, | |
279 | struct v4l2_control *ctrl) | |
280 | { | |
79f94878 | 281 | struct gemtek_pci *card = video_drvdata(file); |
4286c6f6 | 282 | |
6f66446c DL |
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 | } | |
1da177e4 | 296 | |
6f66446c DL |
297 | static int vidioc_s_ctrl(struct file *file, void *priv, |
298 | struct v4l2_control *ctrl) | |
299 | { | |
79f94878 | 300 | struct gemtek_pci *card = video_drvdata(file); |
1da177e4 | 301 | |
6f66446c DL |
302 | switch (ctrl->id) { |
303 | case V4L2_CID_AUDIO_MUTE: | |
304 | if (ctrl->value) | |
305 | gemtek_pci_mute(card); | |
306 | else | |
307 | gemtek_pci_unmute(card); | |
308 | return 0; | |
309 | case V4L2_CID_AUDIO_VOLUME: | |
310 | if (ctrl->value) | |
311 | gemtek_pci_unmute(card); | |
312 | else | |
313 | gemtek_pci_mute(card); | |
314 | return 0; | |
1da177e4 | 315 | } |
6f66446c DL |
316 | return -EINVAL; |
317 | } | |
318 | ||
6f66446c DL |
319 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) |
320 | { | |
321 | *i = 0; | |
322 | return 0; | |
323 | } | |
324 | ||
325 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
326 | { | |
79f94878 HV |
327 | return i ? -EINVAL : 0; |
328 | } | |
329 | ||
330 | static int vidioc_g_audio(struct file *file, void *priv, | |
331 | struct v4l2_audio *a) | |
332 | { | |
333 | a->index = 0; | |
334 | strlcpy(a->name, "Radio", sizeof(a->name)); | |
335 | a->capability = V4L2_AUDCAP_STEREO; | |
6f66446c | 336 | return 0; |
1da177e4 LT |
337 | } |
338 | ||
6f66446c DL |
339 | static int vidioc_s_audio(struct file *file, void *priv, |
340 | struct v4l2_audio *a) | |
1da177e4 | 341 | { |
79f94878 | 342 | return a->index ? -EINVAL : 0; |
1da177e4 LT |
343 | } |
344 | ||
345 | enum { | |
346 | GEMTEK_PR103 | |
347 | }; | |
348 | ||
349 | static char *card_names[] __devinitdata = { | |
350 | "GEMTEK_PR103" | |
351 | }; | |
352 | ||
353 | static struct pci_device_id gemtek_pci_id[] = | |
354 | { | |
355 | { PCI_VENDOR_ID_GEMTEK, PCI_DEVICE_ID_GEMTEK_PR103, | |
356 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, GEMTEK_PR103 }, | |
357 | { 0 } | |
358 | }; | |
359 | ||
79f94878 | 360 | MODULE_DEVICE_TABLE(pci, gemtek_pci_id); |
1da177e4 | 361 | |
bec43661 | 362 | static const struct v4l2_file_operations gemtek_pci_fops = { |
1da177e4 | 363 | .owner = THIS_MODULE, |
6f66446c | 364 | .ioctl = video_ioctl2, |
1da177e4 LT |
365 | }; |
366 | ||
a399810c | 367 | static const struct v4l2_ioctl_ops gemtek_pci_ioctl_ops = { |
6f66446c DL |
368 | .vidioc_querycap = vidioc_querycap, |
369 | .vidioc_g_tuner = vidioc_g_tuner, | |
370 | .vidioc_s_tuner = vidioc_s_tuner, | |
371 | .vidioc_g_audio = vidioc_g_audio, | |
372 | .vidioc_s_audio = vidioc_s_audio, | |
373 | .vidioc_g_input = vidioc_g_input, | |
374 | .vidioc_s_input = vidioc_s_input, | |
375 | .vidioc_g_frequency = vidioc_g_frequency, | |
376 | .vidioc_s_frequency = vidioc_s_frequency, | |
377 | .vidioc_queryctrl = vidioc_queryctrl, | |
378 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
379 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
1da177e4 LT |
380 | }; |
381 | ||
79f94878 | 382 | static int __devinit gemtek_pci_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id) |
1da177e4 | 383 | { |
79f94878 HV |
384 | struct gemtek_pci *card; |
385 | struct v4l2_device *v4l2_dev; | |
386 | int res; | |
1da177e4 | 387 | |
79f94878 HV |
388 | card = kzalloc(sizeof(struct gemtek_pci), GFP_KERNEL); |
389 | if (card == NULL) { | |
390 | dev_err(&pdev->dev, "out of memory\n"); | |
1da177e4 LT |
391 | return -ENOMEM; |
392 | } | |
1da177e4 | 393 | |
79f94878 HV |
394 | v4l2_dev = &card->v4l2_dev; |
395 | mutex_init(&card->lock); | |
396 | card->pdev = pdev; | |
4286c6f6 | 397 | |
79f94878 | 398 | strlcpy(v4l2_dev->name, "gemtek_pci", sizeof(v4l2_dev->name)); |
1da177e4 | 399 | |
79f94878 HV |
400 | res = v4l2_device_register(&pdev->dev, v4l2_dev); |
401 | if (res < 0) { | |
402 | v4l2_err(v4l2_dev, "Could not register v4l2_device\n"); | |
403 | kfree(card); | |
404 | return res; | |
1da177e4 LT |
405 | } |
406 | ||
79f94878 HV |
407 | if (pci_enable_device(pdev)) |
408 | goto err_pci; | |
4286c6f6 | 409 | |
79f94878 HV |
410 | card->iobase = pci_resource_start(pdev, 0); |
411 | card->length = pci_resource_len(pdev, 0); | |
412 | ||
413 | if (request_region(card->iobase, card->length, card_names[pci_id->driver_data]) == NULL) { | |
414 | v4l2_err(v4l2_dev, "i/o port already in use\n"); | |
415 | goto err_pci; | |
1da177e4 | 416 | } |
1da177e4 | 417 | |
79f94878 HV |
418 | strlcpy(card->vdev.name, v4l2_dev->name, sizeof(card->vdev.name)); |
419 | card->vdev.v4l2_dev = v4l2_dev; | |
420 | card->vdev.fops = &gemtek_pci_fops; | |
421 | card->vdev.ioctl_ops = &gemtek_pci_ioctl_ops; | |
422 | card->vdev.release = video_device_release_empty; | |
423 | video_set_drvdata(&card->vdev, card); | |
424 | ||
425 | if (video_register_device(&card->vdev, VFL_TYPE_RADIO, nr_radio) < 0) | |
1da177e4 | 426 | goto err_video; |
1da177e4 | 427 | |
79f94878 | 428 | gemtek_pci_mute(card); |
1da177e4 | 429 | |
79f94878 HV |
430 | v4l2_info(v4l2_dev, "Gemtek PCI Radio (rev. %d) found at 0x%04x-0x%04x.\n", |
431 | pdev->revision, card->iobase, card->iobase + card->length - 1); | |
1da177e4 LT |
432 | |
433 | return 0; | |
434 | ||
435 | err_video: | |
79f94878 | 436 | release_region(card->iobase, card->length); |
1da177e4 LT |
437 | |
438 | err_pci: | |
79f94878 HV |
439 | v4l2_device_unregister(v4l2_dev); |
440 | kfree(card); | |
4286c6f6 | 441 | return -ENODEV; |
1da177e4 LT |
442 | } |
443 | ||
79f94878 | 444 | static void __devexit gemtek_pci_remove(struct pci_dev *pdev) |
1da177e4 | 445 | { |
79f94878 HV |
446 | struct v4l2_device *v4l2_dev = dev_get_drvdata(&pdev->dev); |
447 | struct gemtek_pci *card = to_gemtek_pci(v4l2_dev); | |
1da177e4 | 448 | |
79f94878 HV |
449 | video_unregister_device(&card->vdev); |
450 | v4l2_device_unregister(v4l2_dev); | |
1da177e4 | 451 | |
79f94878 | 452 | release_region(card->iobase, card->length); |
4286c6f6 | 453 | |
79f94878 HV |
454 | if (mx) |
455 | gemtek_pci_mute(card); | |
1da177e4 | 456 | |
79f94878 | 457 | kfree(card); |
1da177e4 LT |
458 | } |
459 | ||
79f94878 | 460 | static struct pci_driver gemtek_pci_driver = { |
1da177e4 LT |
461 | .name = "gemtek_pci", |
462 | .id_table = gemtek_pci_id, | |
463 | .probe = gemtek_pci_probe, | |
464 | .remove = __devexit_p(gemtek_pci_remove), | |
465 | }; | |
466 | ||
79f94878 | 467 | static int __init gemtek_pci_init(void) |
1da177e4 | 468 | { |
79f94878 | 469 | return pci_register_driver(&gemtek_pci_driver); |
1da177e4 LT |
470 | } |
471 | ||
79f94878 | 472 | static void __exit gemtek_pci_exit(void) |
1da177e4 | 473 | { |
13962753 | 474 | pci_unregister_driver(&gemtek_pci_driver); |
1da177e4 LT |
475 | } |
476 | ||
79f94878 HV |
477 | module_init(gemtek_pci_init); |
478 | module_exit(gemtek_pci_exit); |