Commit | Line | Data |
---|---|---|
4286c6f6 MCC |
1 | /* |
2 | * Guillemot Maxi Radio FM 2000 PCI radio card driver for Linux | |
1da177e4 LT |
3 | * (C) 2001 Dimitromanolakis Apostolos <apdim@grecian.net> |
4 | * | |
5 | * Based in the radio Maestro PCI driver. Actually it uses the same chip | |
6 | * for radio but different pci controller. | |
7 | * | |
8 | * I didn't have any specs I reversed engineered the protocol from | |
4286c6f6 | 9 | * the windows driver (radio.dll). |
1da177e4 LT |
10 | * |
11 | * The card uses the TEA5757 chip that includes a search function but it | |
4286c6f6 | 12 | * is useless as I haven't found any way to read back the frequency. If |
1da177e4 LT |
13 | * anybody does please mail me. |
14 | * | |
15 | * For the pdf file see: | |
16 | * http://www.semiconductors.philips.com/pip/TEA5757H/V1 | |
17 | * | |
18 | * | |
19 | * CHANGES: | |
20 | * 0.75b | |
21 | * - better pci interface thanks to Francois Romieu <romieu@cogenit.fr> | |
22 | * | |
e84fef6b | 23 | * 0.75 Sun Feb 4 22:51:27 EET 2001 |
1da177e4 LT |
24 | * - tiding up |
25 | * - removed support for multiple devices as it didn't work anyway | |
26 | * | |
4286c6f6 | 27 | * BUGS: |
1da177e4 LT |
28 | * - card unmutes if you change frequency |
29 | * | |
06470ed6 MCC |
30 | * (c) 2006, 2007 by Mauro Carvalho Chehab <mchehab@infradead.org>: |
31 | * - Conversion to V4L2 API | |
32 | * - Uses video_ioctl2 for parsing and to add debug support | |
1da177e4 LT |
33 | */ |
34 | ||
35 | ||
36 | #include <linux/module.h> | |
37 | #include <linux/init.h> | |
38 | #include <linux/ioport.h> | |
39 | #include <linux/delay.h> | |
1da177e4 LT |
40 | #include <asm/io.h> |
41 | #include <asm/uaccess.h> | |
3593cab5 IM |
42 | #include <linux/mutex.h> |
43 | ||
1da177e4 | 44 | #include <linux/pci.h> |
e84fef6b | 45 | #include <linux/videodev2.h> |
5e87efa3 | 46 | #include <media/v4l2-common.h> |
35ea11ff | 47 | #include <media/v4l2-ioctl.h> |
1da177e4 | 48 | |
f1557ceb | 49 | #define DRIVER_VERSION "0.77" |
e84fef6b MCC |
50 | |
51 | #include <linux/version.h> /* for KERNEL_VERSION MACRO */ | |
f1557ceb MCC |
52 | #define RADIO_VERSION KERNEL_VERSION(0,7,7) |
53 | ||
54 | static struct video_device maxiradio_radio; | |
55 | ||
56 | #define dprintk(num, fmt, arg...) \ | |
57 | do { \ | |
58 | if (maxiradio_radio.debug >= num) \ | |
59 | printk(KERN_DEBUG "%s: " fmt, \ | |
60 | maxiradio_radio.name, ## arg); } while (0) | |
e84fef6b MCC |
61 | |
62 | static struct v4l2_queryctrl radio_qctrl[] = { | |
63 | { | |
64 | .id = V4L2_CID_AUDIO_MUTE, | |
65 | .name = "Mute", | |
66 | .minimum = 0, | |
67 | .maximum = 1, | |
68 | .default_value = 1, | |
69 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
70 | } | |
71 | }; | |
1da177e4 LT |
72 | |
73 | #ifndef PCI_VENDOR_ID_GUILLEMOT | |
74 | #define PCI_VENDOR_ID_GUILLEMOT 0x5046 | |
75 | #endif | |
76 | ||
77 | #ifndef PCI_DEVICE_ID_GUILLEMOT | |
78 | #define PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO 0x1001 | |
79 | #endif | |
80 | ||
81 | ||
82 | /* TEA5757 pin mappings */ | |
83 | static const int clk = 1, data = 2, wren = 4, mo_st = 8, power = 16 ; | |
84 | ||
85 | static int radio_nr = -1; | |
86 | module_param(radio_nr, int, 0); | |
87 | ||
3ca685aa | 88 | static unsigned long in_use; |
1da177e4 LT |
89 | |
90 | #define FREQ_LO 50*16000 | |
91 | #define FREQ_HI 150*16000 | |
92 | ||
93 | #define FREQ_IF 171200 /* 10.7*16000 */ | |
94 | #define FREQ_STEP 200 /* 12.5*16 */ | |
95 | ||
f1557ceb MCC |
96 | /* (x==fmhz*16*1000) -> bits */ |
97 | #define FREQ2BITS(x) ((( (unsigned int)(x)+FREQ_IF+(FREQ_STEP<<1)) \ | |
98 | /(FREQ_STEP<<2))<<2) | |
1da177e4 LT |
99 | |
100 | #define BITS2FREQ(x) ((x) * FREQ_STEP - FREQ_IF) | |
101 | ||
102 | ||
bec43661 | 103 | static int maxiradio_exclusive_open(struct file *file) |
3ca685aa HV |
104 | { |
105 | return test_and_set_bit(0, &in_use) ? -EBUSY : 0; | |
106 | } | |
107 | ||
bec43661 | 108 | static int maxiradio_exclusive_release(struct file *file) |
3ca685aa HV |
109 | { |
110 | clear_bit(0, &in_use); | |
111 | return 0; | |
112 | } | |
113 | ||
bec43661 | 114 | static const struct v4l2_file_operations maxiradio_fops = { |
1da177e4 | 115 | .owner = THIS_MODULE, |
3ca685aa HV |
116 | .open = maxiradio_exclusive_open, |
117 | .release = maxiradio_exclusive_release, | |
06470ed6 | 118 | .ioctl = video_ioctl2, |
1da177e4 | 119 | }; |
1da177e4 LT |
120 | |
121 | static struct radio_device | |
122 | { | |
123 | __u16 io, /* base of radio io */ | |
124 | muted, /* VIDEO_AUDIO_MUTE */ | |
4286c6f6 | 125 | stereo, /* VIDEO_TUNER_STEREO_ON */ |
1da177e4 | 126 | tuned; /* signal strength (0 or 0xffff) */ |
4286c6f6 | 127 | |
1da177e4 | 128 | unsigned long freq; |
4286c6f6 | 129 | |
3593cab5 | 130 | struct mutex lock; |
712642b8 MCC |
131 | } radio_unit = { |
132 | .muted =1, | |
133 | .freq = FREQ_LO, | |
134 | }; | |
1da177e4 LT |
135 | |
136 | static void outbit(unsigned long bit, __u16 io) | |
137 | { | |
f1557ceb | 138 | if (bit != 0) |
1da177e4 LT |
139 | { |
140 | outb( power|wren|data ,io); udelay(4); | |
141 | outb( power|wren|data|clk ,io); udelay(4); | |
142 | outb( power|wren|data ,io); udelay(4); | |
143 | } | |
4286c6f6 | 144 | else |
1da177e4 LT |
145 | { |
146 | outb( power|wren ,io); udelay(4); | |
147 | outb( power|wren|clk ,io); udelay(4); | |
148 | outb( power|wren ,io); udelay(4); | |
149 | } | |
150 | } | |
151 | ||
152 | static void turn_power(__u16 io, int p) | |
153 | { | |
f1557ceb MCC |
154 | if (p != 0) { |
155 | dprintk(1, "Radio powered on\n"); | |
156 | outb(power, io); | |
157 | } else { | |
158 | dprintk(1, "Radio powered off\n"); | |
159 | outb(0,io); | |
160 | } | |
1da177e4 LT |
161 | } |
162 | ||
f1557ceb | 163 | static void set_freq(__u16 io, __u32 freq) |
1da177e4 LT |
164 | { |
165 | unsigned long int si; | |
166 | int bl; | |
c6eb8eaf | 167 | int val = FREQ2BITS(freq); |
4286c6f6 | 168 | |
1da177e4 LT |
169 | /* TEA5757 shift register bits (see pdf) */ |
170 | ||
c6eb8eaf HV |
171 | outbit(0, io); /* 24 search */ |
172 | outbit(1, io); /* 23 search up/down */ | |
4286c6f6 | 173 | |
c6eb8eaf | 174 | outbit(0, io); /* 22 stereo/mono */ |
1da177e4 | 175 | |
c6eb8eaf HV |
176 | outbit(0, io); /* 21 band */ |
177 | outbit(0, io); /* 20 band (only 00=FM works I think) */ | |
1da177e4 | 178 | |
c6eb8eaf HV |
179 | outbit(0, io); /* 19 port ? */ |
180 | outbit(0, io); /* 18 port ? */ | |
4286c6f6 | 181 | |
c6eb8eaf HV |
182 | outbit(0, io); /* 17 search level */ |
183 | outbit(0, io); /* 16 search level */ | |
4286c6f6 | 184 | |
1da177e4 | 185 | si = 0x8000; |
c6eb8eaf HV |
186 | for (bl = 1; bl <= 16; bl++) { |
187 | outbit(val & si, io); | |
188 | si >>= 1; | |
f1557ceb | 189 | } |
4286c6f6 | 190 | |
f1557ceb MCC |
191 | dprintk(1, "Radio freq set to %d.%02d MHz\n", |
192 | freq / 16000, | |
193 | freq % 16000 * 100 / 16000); | |
194 | ||
195 | turn_power(io, 1); | |
1da177e4 LT |
196 | } |
197 | ||
198 | static int get_stereo(__u16 io) | |
4286c6f6 | 199 | { |
f1557ceb MCC |
200 | outb(power,io); |
201 | udelay(4); | |
202 | ||
1da177e4 LT |
203 | return !(inb(io) & mo_st); |
204 | } | |
205 | ||
206 | static int get_tune(__u16 io) | |
4286c6f6 | 207 | { |
f1557ceb MCC |
208 | outb(power+clk,io); |
209 | udelay(4); | |
210 | ||
1da177e4 LT |
211 | return !(inb(io) & mo_st); |
212 | } | |
213 | ||
214 | ||
06470ed6 MCC |
215 | static int vidioc_querycap (struct file *file, void *priv, |
216 | struct v4l2_capability *v) | |
217 | { | |
218 | strlcpy(v->driver, "radio-maxiradio", sizeof (v->driver)); | |
219 | strlcpy(v->card, "Maxi Radio FM2000 radio", sizeof (v->card)); | |
220 | sprintf(v->bus_info,"ISA"); | |
221 | v->version = RADIO_VERSION; | |
222 | v->capabilities = V4L2_CAP_TUNER; | |
223 | ||
224 | return 0; | |
225 | } | |
226 | ||
227 | static int vidioc_g_tuner (struct file *file, void *priv, | |
228 | struct v4l2_tuner *v) | |
1da177e4 | 229 | { |
c170ecf4 | 230 | struct radio_device *card = video_drvdata(file); |
1da177e4 | 231 | |
06470ed6 MCC |
232 | if (v->index > 0) |
233 | return -EINVAL; | |
e84fef6b | 234 | |
06470ed6 MCC |
235 | memset(v,0,sizeof(*v)); |
236 | strcpy(v->name, "FM"); | |
237 | v->type = V4L2_TUNER_RADIO; | |
4286c6f6 | 238 | |
06470ed6 MCC |
239 | v->rangelow=FREQ_LO; |
240 | v->rangehigh=FREQ_HI; | |
241 | v->rxsubchans =V4L2_TUNER_SUB_MONO|V4L2_TUNER_SUB_STEREO; | |
242 | v->capability=V4L2_TUNER_CAP_LOW; | |
243 | if(get_stereo(card->io)) | |
244 | v->audmode = V4L2_TUNER_MODE_STEREO; | |
245 | else | |
246 | v->audmode = V4L2_TUNER_MODE_MONO; | |
247 | v->signal=0xffff*get_tune(card->io); | |
4286c6f6 | 248 | |
06470ed6 MCC |
249 | return 0; |
250 | } | |
e84fef6b | 251 | |
06470ed6 MCC |
252 | static int vidioc_s_tuner (struct file *file, void *priv, |
253 | struct v4l2_tuner *v) | |
254 | { | |
255 | if (v->index > 0) | |
256 | return -EINVAL; | |
4286c6f6 | 257 | |
06470ed6 MCC |
258 | return 0; |
259 | } | |
e84fef6b | 260 | |
140dcc46 MCC |
261 | static int vidioc_g_audio (struct file *file, void *priv, |
262 | struct v4l2_audio *a) | |
263 | { | |
264 | if (a->index > 1) | |
265 | return -EINVAL; | |
266 | ||
b61f8d69 | 267 | strcpy(a->name, "FM"); |
140dcc46 MCC |
268 | a->capability = V4L2_AUDCAP_STEREO; |
269 | return 0; | |
270 | } | |
271 | ||
a0c05ab9 MCC |
272 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) |
273 | { | |
274 | *i = 0; | |
f1557ceb | 275 | |
a0c05ab9 MCC |
276 | return 0; |
277 | } | |
278 | ||
279 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
280 | { | |
281 | if (i != 0) | |
282 | return -EINVAL; | |
f1557ceb | 283 | |
a0c05ab9 MCC |
284 | return 0; |
285 | } | |
286 | ||
287 | ||
140dcc46 MCC |
288 | static int vidioc_s_audio (struct file *file, void *priv, |
289 | struct v4l2_audio *a) | |
290 | { | |
291 | if (a->index != 0) | |
292 | return -EINVAL; | |
293 | ||
294 | return 0; | |
295 | } | |
296 | ||
06470ed6 MCC |
297 | static int vidioc_s_frequency (struct file *file, void *priv, |
298 | struct v4l2_frequency *f) | |
299 | { | |
c170ecf4 | 300 | struct radio_device *card = video_drvdata(file); |
4286c6f6 | 301 | |
f1557ceb MCC |
302 | if (f->frequency < FREQ_LO || f->frequency > FREQ_HI) { |
303 | dprintk(1, "radio freq (%d.%02d MHz) out of range (%d-%d)\n", | |
304 | f->frequency / 16000, | |
305 | f->frequency % 16000 * 100 / 16000, | |
306 | FREQ_LO / 16000, FREQ_HI / 16000); | |
307 | ||
06470ed6 | 308 | return -EINVAL; |
f1557ceb | 309 | } |
4286c6f6 | 310 | |
06470ed6 | 311 | card->freq = f->frequency; |
f1557ceb | 312 | set_freq(card->io, card->freq); |
06470ed6 | 313 | msleep(125); |
e84fef6b | 314 | |
06470ed6 MCC |
315 | return 0; |
316 | } | |
4286c6f6 | 317 | |
06470ed6 MCC |
318 | static int vidioc_g_frequency (struct file *file, void *priv, |
319 | struct v4l2_frequency *f) | |
320 | { | |
c170ecf4 | 321 | struct radio_device *card = video_drvdata(file); |
4286c6f6 | 322 | |
06470ed6 MCC |
323 | f->type = V4L2_TUNER_RADIO; |
324 | f->frequency = card->freq; | |
325 | ||
f1557ceb MCC |
326 | dprintk(4, "radio freq is %d.%02d MHz", |
327 | f->frequency / 16000, | |
328 | f->frequency % 16000 * 100 / 16000); | |
329 | ||
06470ed6 MCC |
330 | return 0; |
331 | } | |
332 | ||
333 | static int vidioc_queryctrl (struct file *file, void *priv, | |
334 | struct v4l2_queryctrl *qc) | |
335 | { | |
336 | int i; | |
337 | ||
338 | for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) { | |
339 | if (qc->id && qc->id == radio_qctrl[i].id) { | |
340 | memcpy(qc, &(radio_qctrl[i]), sizeof(*qc)); | |
341 | return (0); | |
e84fef6b | 342 | } |
06470ed6 | 343 | } |
f1557ceb | 344 | |
06470ed6 MCC |
345 | return -EINVAL; |
346 | } | |
e84fef6b | 347 | |
06470ed6 MCC |
348 | static int vidioc_g_ctrl (struct file *file, void *priv, |
349 | struct v4l2_control *ctrl) | |
350 | { | |
c170ecf4 | 351 | struct radio_device *card = video_drvdata(file); |
e84fef6b | 352 | |
06470ed6 MCC |
353 | switch (ctrl->id) { |
354 | case V4L2_CID_AUDIO_MUTE: | |
355 | ctrl->value=card->muted; | |
356 | return (0); | |
1da177e4 | 357 | } |
f1557ceb | 358 | |
06470ed6 | 359 | return -EINVAL; |
1da177e4 LT |
360 | } |
361 | ||
06470ed6 MCC |
362 | static int vidioc_s_ctrl (struct file *file, void *priv, |
363 | struct v4l2_control *ctrl) | |
1da177e4 | 364 | { |
c170ecf4 | 365 | struct radio_device *card = video_drvdata(file); |
4286c6f6 | 366 | |
06470ed6 MCC |
367 | switch (ctrl->id) { |
368 | case V4L2_CID_AUDIO_MUTE: | |
369 | card->muted = ctrl->value; | |
370 | if(card->muted) | |
371 | turn_power(card->io, 0); | |
372 | else | |
f1557ceb | 373 | set_freq(card->io, card->freq); |
06470ed6 MCC |
374 | return 0; |
375 | } | |
f1557ceb | 376 | |
06470ed6 | 377 | return -EINVAL; |
1da177e4 LT |
378 | } |
379 | ||
a399810c | 380 | static const struct v4l2_ioctl_ops maxiradio_ioctl_ops = { |
06470ed6 MCC |
381 | .vidioc_querycap = vidioc_querycap, |
382 | .vidioc_g_tuner = vidioc_g_tuner, | |
383 | .vidioc_s_tuner = vidioc_s_tuner, | |
140dcc46 MCC |
384 | .vidioc_g_audio = vidioc_g_audio, |
385 | .vidioc_s_audio = vidioc_s_audio, | |
a0c05ab9 MCC |
386 | .vidioc_g_input = vidioc_g_input, |
387 | .vidioc_s_input = vidioc_s_input, | |
06470ed6 MCC |
388 | .vidioc_g_frequency = vidioc_g_frequency, |
389 | .vidioc_s_frequency = vidioc_s_frequency, | |
390 | .vidioc_queryctrl = vidioc_queryctrl, | |
391 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
392 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
06470ed6 | 393 | }; |
1da177e4 | 394 | |
a399810c | 395 | static struct video_device maxiradio_radio = { |
aa5e90af HV |
396 | .name = "Maxi Radio FM2000 radio", |
397 | .fops = &maxiradio_fops, | |
398 | .ioctl_ops = &maxiradio_ioctl_ops, | |
399 | .release = video_device_release_empty, | |
a399810c HV |
400 | }; |
401 | ||
1da177e4 LT |
402 | static int __devinit maxiradio_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) |
403 | { | |
404 | if(!request_region(pci_resource_start(pdev, 0), | |
4286c6f6 MCC |
405 | pci_resource_len(pdev, 0), "Maxi Radio FM 2000")) { |
406 | printk(KERN_ERR "radio-maxiradio: can't reserve I/O ports\n"); | |
407 | goto err_out; | |
1da177e4 LT |
408 | } |
409 | ||
410 | if (pci_enable_device(pdev)) | |
4286c6f6 | 411 | goto err_out_free_region; |
1da177e4 LT |
412 | |
413 | radio_unit.io = pci_resource_start(pdev, 0); | |
3593cab5 | 414 | mutex_init(&radio_unit.lock); |
601e9444 | 415 | video_set_drvdata(&maxiradio_radio, &radio_unit); |
1da177e4 | 416 | |
cba99ae8 | 417 | if (video_register_device(&maxiradio_radio, VFL_TYPE_RADIO, radio_nr) < 0) { |
4286c6f6 MCC |
418 | printk("radio-maxiradio: can't register device!"); |
419 | goto err_out_free_region; | |
1da177e4 LT |
420 | } |
421 | ||
422 | printk(KERN_INFO "radio-maxiradio: version " | |
423 | DRIVER_VERSION | |
424 | " time " | |
425 | __TIME__ " " | |
426 | __DATE__ | |
427 | "\n"); | |
428 | ||
429 | printk(KERN_INFO "radio-maxiradio: found Guillemot MAXI Radio device (io = 0x%x)\n", | |
430 | radio_unit.io); | |
431 | return 0; | |
432 | ||
433 | err_out_free_region: | |
434 | release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); | |
435 | err_out: | |
436 | return -ENODEV; | |
437 | } | |
438 | ||
439 | static void __devexit maxiradio_remove_one(struct pci_dev *pdev) | |
440 | { | |
441 | video_unregister_device(&maxiradio_radio); | |
442 | release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); | |
443 | } | |
444 | ||
445 | static struct pci_device_id maxiradio_pci_tbl[] = { | |
446 | { PCI_VENDOR_ID_GUILLEMOT, PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO, | |
447 | PCI_ANY_ID, PCI_ANY_ID, }, | |
448 | { 0,} | |
449 | }; | |
450 | ||
451 | MODULE_DEVICE_TABLE(pci, maxiradio_pci_tbl); | |
452 | ||
453 | static struct pci_driver maxiradio_driver = { | |
454 | .name = "radio-maxiradio", | |
455 | .id_table = maxiradio_pci_tbl, | |
456 | .probe = maxiradio_init_one, | |
457 | .remove = __devexit_p(maxiradio_remove_one), | |
458 | }; | |
459 | ||
460 | static int __init maxiradio_radio_init(void) | |
461 | { | |
9bfab8ce | 462 | return pci_register_driver(&maxiradio_driver); |
1da177e4 LT |
463 | } |
464 | ||
465 | static void __exit maxiradio_radio_exit(void) | |
466 | { | |
467 | pci_unregister_driver(&maxiradio_driver); | |
468 | } | |
469 | ||
470 | module_init(maxiradio_radio_init); | |
471 | module_exit(maxiradio_radio_exit); | |
06470ed6 MCC |
472 | |
473 | MODULE_AUTHOR("Dimitromanolakis Apostolos, apdim@grecian.net"); | |
474 | MODULE_DESCRIPTION("Radio driver for the Guillemot Maxi Radio FM2000 radio."); | |
475 | MODULE_LICENSE("GPL"); | |
476 | ||
477 | module_param_named(debug,maxiradio_radio.debug, int, 0644); | |
478 | MODULE_PARM_DESC(debug,"activates debug info"); |