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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> | |
3593cab5 | 40 | #include <linux/mutex.h> |
1da177e4 | 41 | #include <linux/pci.h> |
e84fef6b | 42 | #include <linux/videodev2.h> |
2710e6aa HV |
43 | #include <linux/version.h> /* for KERNEL_VERSION MACRO */ |
44 | #include <linux/io.h> | |
5a0e3ad6 | 45 | #include <linux/slab.h> |
2710e6aa | 46 | #include <media/v4l2-device.h> |
35ea11ff | 47 | #include <media/v4l2-ioctl.h> |
1da177e4 | 48 | |
2710e6aa HV |
49 | MODULE_AUTHOR("Dimitromanolakis Apostolos, apdim@grecian.net"); |
50 | MODULE_DESCRIPTION("Radio driver for the Guillemot Maxi Radio FM2000 radio."); | |
51 | MODULE_LICENSE("GPL"); | |
52 | ||
53 | static int radio_nr = -1; | |
54 | module_param(radio_nr, int, 0); | |
55 | ||
56 | static int debug; | |
57 | ||
58 | module_param(debug, int, 0644); | |
59 | MODULE_PARM_DESC(debug, "activates debug info"); | |
60 | ||
f1557ceb | 61 | #define DRIVER_VERSION "0.77" |
e84fef6b | 62 | |
2710e6aa HV |
63 | #define RADIO_VERSION KERNEL_VERSION(0, 7, 7) |
64 | ||
65 | #define dprintk(dev, num, fmt, arg...) \ | |
66 | v4l2_dbg(num, debug, &dev->v4l2_dev, fmt, ## arg) | |
1da177e4 LT |
67 | |
68 | #ifndef PCI_VENDOR_ID_GUILLEMOT | |
69 | #define PCI_VENDOR_ID_GUILLEMOT 0x5046 | |
70 | #endif | |
71 | ||
72 | #ifndef PCI_DEVICE_ID_GUILLEMOT | |
73 | #define PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO 0x1001 | |
74 | #endif | |
75 | ||
76 | ||
77 | /* TEA5757 pin mappings */ | |
2710e6aa | 78 | static const int clk = 1, data = 2, wren = 4, mo_st = 8, power = 16; |
1da177e4 | 79 | |
2710e6aa HV |
80 | #define FREQ_LO (50 * 16000) |
81 | #define FREQ_HI (150 * 16000) | |
1da177e4 LT |
82 | |
83 | #define FREQ_IF 171200 /* 10.7*16000 */ | |
84 | #define FREQ_STEP 200 /* 12.5*16 */ | |
85 | ||
f1557ceb | 86 | /* (x==fmhz*16*1000) -> bits */ |
2710e6aa HV |
87 | #define FREQ2BITS(x) \ |
88 | ((((unsigned int)(x) + FREQ_IF + (FREQ_STEP << 1)) / (FREQ_STEP << 2)) << 2) | |
1da177e4 LT |
89 | |
90 | #define BITS2FREQ(x) ((x) * FREQ_STEP - FREQ_IF) | |
91 | ||
92 | ||
2710e6aa | 93 | struct maxiradio |
3ca685aa | 94 | { |
2710e6aa HV |
95 | struct v4l2_device v4l2_dev; |
96 | struct video_device vdev; | |
97 | struct pci_dev *pdev; | |
1da177e4 | 98 | |
2710e6aa HV |
99 | u16 io; /* base of radio io */ |
100 | u16 muted; /* VIDEO_AUDIO_MUTE */ | |
101 | u16 stereo; /* VIDEO_TUNER_STEREO_ON */ | |
102 | u16 tuned; /* signal strength (0 or 0xffff) */ | |
4286c6f6 | 103 | |
1da177e4 | 104 | unsigned long freq; |
4286c6f6 | 105 | |
3593cab5 | 106 | struct mutex lock; |
712642b8 | 107 | }; |
1da177e4 | 108 | |
2710e6aa | 109 | static inline struct maxiradio *to_maxiradio(struct v4l2_device *v4l2_dev) |
1da177e4 | 110 | { |
2710e6aa | 111 | return container_of(v4l2_dev, struct maxiradio, v4l2_dev); |
1da177e4 LT |
112 | } |
113 | ||
2710e6aa HV |
114 | static void outbit(unsigned long bit, u16 io) |
115 | { | |
116 | int val = power | wren | (bit ? data : 0); | |
117 | ||
118 | outb(val, io); | |
119 | udelay(4); | |
120 | outb(val | clk, io); | |
121 | udelay(4); | |
122 | outb(val, io); | |
123 | udelay(4); | |
124 | } | |
125 | ||
126 | static void turn_power(struct maxiradio *dev, int p) | |
1da177e4 | 127 | { |
f1557ceb | 128 | if (p != 0) { |
2710e6aa HV |
129 | dprintk(dev, 1, "Radio powered on\n"); |
130 | outb(power, dev->io); | |
f1557ceb | 131 | } else { |
2710e6aa HV |
132 | dprintk(dev, 1, "Radio powered off\n"); |
133 | outb(0, dev->io); | |
f1557ceb | 134 | } |
1da177e4 LT |
135 | } |
136 | ||
2710e6aa | 137 | static void set_freq(struct maxiradio *dev, u32 freq) |
1da177e4 LT |
138 | { |
139 | unsigned long int si; | |
140 | int bl; | |
2710e6aa | 141 | int io = dev->io; |
c6eb8eaf | 142 | int val = FREQ2BITS(freq); |
4286c6f6 | 143 | |
1da177e4 LT |
144 | /* TEA5757 shift register bits (see pdf) */ |
145 | ||
c6eb8eaf HV |
146 | outbit(0, io); /* 24 search */ |
147 | outbit(1, io); /* 23 search up/down */ | |
4286c6f6 | 148 | |
c6eb8eaf | 149 | outbit(0, io); /* 22 stereo/mono */ |
1da177e4 | 150 | |
c6eb8eaf HV |
151 | outbit(0, io); /* 21 band */ |
152 | outbit(0, io); /* 20 band (only 00=FM works I think) */ | |
1da177e4 | 153 | |
c6eb8eaf HV |
154 | outbit(0, io); /* 19 port ? */ |
155 | outbit(0, io); /* 18 port ? */ | |
4286c6f6 | 156 | |
c6eb8eaf HV |
157 | outbit(0, io); /* 17 search level */ |
158 | outbit(0, io); /* 16 search level */ | |
4286c6f6 | 159 | |
1da177e4 | 160 | si = 0x8000; |
c6eb8eaf HV |
161 | for (bl = 1; bl <= 16; bl++) { |
162 | outbit(val & si, io); | |
163 | si >>= 1; | |
f1557ceb | 164 | } |
4286c6f6 | 165 | |
2710e6aa | 166 | dprintk(dev, 1, "Radio freq set to %d.%02d MHz\n", |
f1557ceb MCC |
167 | freq / 16000, |
168 | freq % 16000 * 100 / 16000); | |
169 | ||
2710e6aa | 170 | turn_power(dev, 1); |
1da177e4 LT |
171 | } |
172 | ||
2710e6aa | 173 | static int get_stereo(u16 io) |
4286c6f6 | 174 | { |
f1557ceb MCC |
175 | outb(power,io); |
176 | udelay(4); | |
177 | ||
1da177e4 LT |
178 | return !(inb(io) & mo_st); |
179 | } | |
180 | ||
2710e6aa | 181 | static int get_tune(u16 io) |
4286c6f6 | 182 | { |
f1557ceb MCC |
183 | outb(power+clk,io); |
184 | udelay(4); | |
185 | ||
1da177e4 LT |
186 | return !(inb(io) & mo_st); |
187 | } | |
188 | ||
189 | ||
2710e6aa | 190 | static int vidioc_querycap(struct file *file, void *priv, |
06470ed6 MCC |
191 | struct v4l2_capability *v) |
192 | { | |
2710e6aa | 193 | struct maxiradio *dev = video_drvdata(file); |
06470ed6 | 194 | |
2710e6aa HV |
195 | strlcpy(v->driver, "radio-maxiradio", sizeof(v->driver)); |
196 | strlcpy(v->card, "Maxi Radio FM2000 radio", sizeof(v->card)); | |
197 | snprintf(v->bus_info, sizeof(v->bus_info), "PCI:%s", pci_name(dev->pdev)); | |
198 | v->version = RADIO_VERSION; | |
199 | v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO; | |
06470ed6 MCC |
200 | return 0; |
201 | } | |
202 | ||
2710e6aa | 203 | static int vidioc_g_tuner(struct file *file, void *priv, |
06470ed6 | 204 | struct v4l2_tuner *v) |
1da177e4 | 205 | { |
2710e6aa | 206 | struct maxiradio *dev = video_drvdata(file); |
1da177e4 | 207 | |
06470ed6 MCC |
208 | if (v->index > 0) |
209 | return -EINVAL; | |
e84fef6b | 210 | |
2710e6aa HV |
211 | mutex_lock(&dev->lock); |
212 | strlcpy(v->name, "FM", sizeof(v->name)); | |
06470ed6 | 213 | v->type = V4L2_TUNER_RADIO; |
2710e6aa HV |
214 | v->rangelow = FREQ_LO; |
215 | v->rangehigh = FREQ_HI; | |
216 | v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; | |
217 | v->capability = V4L2_TUNER_CAP_LOW; | |
218 | if (get_stereo(dev->io)) | |
06470ed6 MCC |
219 | v->audmode = V4L2_TUNER_MODE_STEREO; |
220 | else | |
221 | v->audmode = V4L2_TUNER_MODE_MONO; | |
2710e6aa HV |
222 | v->signal = 0xffff * get_tune(dev->io); |
223 | mutex_unlock(&dev->lock); | |
4286c6f6 | 224 | |
06470ed6 MCC |
225 | return 0; |
226 | } | |
e84fef6b | 227 | |
2710e6aa | 228 | static int vidioc_s_tuner(struct file *file, void *priv, |
06470ed6 MCC |
229 | struct v4l2_tuner *v) |
230 | { | |
2710e6aa | 231 | return v->index ? -EINVAL : 0; |
140dcc46 MCC |
232 | } |
233 | ||
a0c05ab9 MCC |
234 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) |
235 | { | |
236 | *i = 0; | |
237 | return 0; | |
238 | } | |
239 | ||
240 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
241 | { | |
2710e6aa HV |
242 | return i ? -EINVAL : 0; |
243 | } | |
f1557ceb | 244 | |
2710e6aa HV |
245 | static int vidioc_g_audio(struct file *file, void *priv, |
246 | struct v4l2_audio *a) | |
247 | { | |
248 | a->index = 0; | |
249 | strlcpy(a->name, "Radio", sizeof(a->name)); | |
250 | a->capability = V4L2_AUDCAP_STEREO; | |
a0c05ab9 MCC |
251 | return 0; |
252 | } | |
253 | ||
254 | ||
2710e6aa | 255 | static int vidioc_s_audio(struct file *file, void *priv, |
140dcc46 MCC |
256 | struct v4l2_audio *a) |
257 | { | |
2710e6aa | 258 | return a->index ? -EINVAL : 0; |
140dcc46 MCC |
259 | } |
260 | ||
2710e6aa | 261 | static int vidioc_s_frequency(struct file *file, void *priv, |
06470ed6 MCC |
262 | struct v4l2_frequency *f) |
263 | { | |
2710e6aa | 264 | struct maxiradio *dev = video_drvdata(file); |
4286c6f6 | 265 | |
a3a9e287 HV |
266 | if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) |
267 | return -EINVAL; | |
f1557ceb | 268 | if (f->frequency < FREQ_LO || f->frequency > FREQ_HI) { |
2710e6aa | 269 | dprintk(dev, 1, "radio freq (%d.%02d MHz) out of range (%d-%d)\n", |
f1557ceb MCC |
270 | f->frequency / 16000, |
271 | f->frequency % 16000 * 100 / 16000, | |
272 | FREQ_LO / 16000, FREQ_HI / 16000); | |
273 | ||
06470ed6 | 274 | return -EINVAL; |
f1557ceb | 275 | } |
4286c6f6 | 276 | |
2710e6aa HV |
277 | mutex_lock(&dev->lock); |
278 | dev->freq = f->frequency; | |
279 | set_freq(dev, dev->freq); | |
06470ed6 | 280 | msleep(125); |
2710e6aa | 281 | mutex_unlock(&dev->lock); |
e84fef6b | 282 | |
06470ed6 MCC |
283 | return 0; |
284 | } | |
4286c6f6 | 285 | |
2710e6aa | 286 | static int vidioc_g_frequency(struct file *file, void *priv, |
06470ed6 MCC |
287 | struct v4l2_frequency *f) |
288 | { | |
2710e6aa | 289 | struct maxiradio *dev = video_drvdata(file); |
4286c6f6 | 290 | |
a3a9e287 HV |
291 | if (f->tuner != 0) |
292 | return -EINVAL; | |
06470ed6 | 293 | f->type = V4L2_TUNER_RADIO; |
2710e6aa | 294 | f->frequency = dev->freq; |
06470ed6 | 295 | |
2710e6aa | 296 | dprintk(dev, 4, "radio freq is %d.%02d MHz", |
f1557ceb MCC |
297 | f->frequency / 16000, |
298 | f->frequency % 16000 * 100 / 16000); | |
299 | ||
06470ed6 MCC |
300 | return 0; |
301 | } | |
302 | ||
2710e6aa | 303 | static int vidioc_queryctrl(struct file *file, void *priv, |
06470ed6 MCC |
304 | struct v4l2_queryctrl *qc) |
305 | { | |
2710e6aa HV |
306 | switch (qc->id) { |
307 | case V4L2_CID_AUDIO_MUTE: | |
308 | return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); | |
06470ed6 MCC |
309 | } |
310 | return -EINVAL; | |
311 | } | |
e84fef6b | 312 | |
2710e6aa HV |
313 | static int vidioc_g_ctrl(struct file *file, void *priv, |
314 | struct v4l2_control *ctrl) | |
06470ed6 | 315 | { |
2710e6aa | 316 | struct maxiradio *dev = video_drvdata(file); |
e84fef6b | 317 | |
06470ed6 | 318 | switch (ctrl->id) { |
2710e6aa HV |
319 | case V4L2_CID_AUDIO_MUTE: |
320 | ctrl->value = dev->muted; | |
321 | return 0; | |
1da177e4 | 322 | } |
f1557ceb | 323 | |
06470ed6 | 324 | return -EINVAL; |
1da177e4 LT |
325 | } |
326 | ||
2710e6aa HV |
327 | static int vidioc_s_ctrl(struct file *file, void *priv, |
328 | struct v4l2_control *ctrl) | |
1da177e4 | 329 | { |
2710e6aa | 330 | struct maxiradio *dev = video_drvdata(file); |
4286c6f6 | 331 | |
06470ed6 | 332 | switch (ctrl->id) { |
2710e6aa HV |
333 | case V4L2_CID_AUDIO_MUTE: |
334 | mutex_lock(&dev->lock); | |
335 | dev->muted = ctrl->value; | |
336 | if (dev->muted) | |
337 | turn_power(dev, 0); | |
338 | else | |
339 | set_freq(dev, dev->freq); | |
340 | mutex_unlock(&dev->lock); | |
341 | return 0; | |
06470ed6 | 342 | } |
f1557ceb | 343 | |
06470ed6 | 344 | return -EINVAL; |
1da177e4 LT |
345 | } |
346 | ||
2710e6aa HV |
347 | static const struct v4l2_file_operations maxiradio_fops = { |
348 | .owner = THIS_MODULE, | |
2710e6aa HV |
349 | .ioctl = video_ioctl2, |
350 | }; | |
351 | ||
a399810c | 352 | static const struct v4l2_ioctl_ops maxiradio_ioctl_ops = { |
06470ed6 MCC |
353 | .vidioc_querycap = vidioc_querycap, |
354 | .vidioc_g_tuner = vidioc_g_tuner, | |
355 | .vidioc_s_tuner = vidioc_s_tuner, | |
140dcc46 MCC |
356 | .vidioc_g_audio = vidioc_g_audio, |
357 | .vidioc_s_audio = vidioc_s_audio, | |
a0c05ab9 MCC |
358 | .vidioc_g_input = vidioc_g_input, |
359 | .vidioc_s_input = vidioc_s_input, | |
06470ed6 MCC |
360 | .vidioc_g_frequency = vidioc_g_frequency, |
361 | .vidioc_s_frequency = vidioc_s_frequency, | |
362 | .vidioc_queryctrl = vidioc_queryctrl, | |
363 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
364 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
06470ed6 | 365 | }; |
1da177e4 LT |
366 | |
367 | static int __devinit maxiradio_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) | |
368 | { | |
2710e6aa HV |
369 | struct maxiradio *dev; |
370 | struct v4l2_device *v4l2_dev; | |
371 | int retval = -ENOMEM; | |
372 | ||
373 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); | |
374 | if (dev == NULL) { | |
375 | dev_err(&pdev->dev, "not enough memory\n"); | |
376 | return -ENOMEM; | |
377 | } | |
378 | ||
379 | v4l2_dev = &dev->v4l2_dev; | |
380 | mutex_init(&dev->lock); | |
381 | dev->pdev = pdev; | |
382 | dev->muted = 1; | |
383 | dev->freq = FREQ_LO; | |
384 | ||
385 | strlcpy(v4l2_dev->name, "maxiradio", sizeof(v4l2_dev->name)); | |
386 | ||
387 | retval = v4l2_device_register(&pdev->dev, v4l2_dev); | |
388 | if (retval < 0) { | |
389 | v4l2_err(v4l2_dev, "Could not register v4l2_device\n"); | |
390 | goto errfr; | |
391 | } | |
392 | ||
393 | if (!request_region(pci_resource_start(pdev, 0), | |
4286c6f6 | 394 | pci_resource_len(pdev, 0), "Maxi Radio FM 2000")) { |
2710e6aa | 395 | v4l2_err(v4l2_dev, "can't reserve I/O ports\n"); |
4286c6f6 | 396 | goto err_out; |
1da177e4 LT |
397 | } |
398 | ||
399 | if (pci_enable_device(pdev)) | |
4286c6f6 | 400 | goto err_out_free_region; |
1da177e4 | 401 | |
2710e6aa HV |
402 | dev->io = pci_resource_start(pdev, 0); |
403 | strlcpy(dev->vdev.name, v4l2_dev->name, sizeof(dev->vdev.name)); | |
404 | dev->vdev.v4l2_dev = v4l2_dev; | |
405 | dev->vdev.fops = &maxiradio_fops; | |
406 | dev->vdev.ioctl_ops = &maxiradio_ioctl_ops; | |
407 | dev->vdev.release = video_device_release_empty; | |
408 | video_set_drvdata(&dev->vdev, dev); | |
1da177e4 | 409 | |
2710e6aa HV |
410 | if (video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr) < 0) { |
411 | v4l2_err(v4l2_dev, "can't register device!"); | |
4286c6f6 | 412 | goto err_out_free_region; |
1da177e4 LT |
413 | } |
414 | ||
2710e6aa HV |
415 | v4l2_info(v4l2_dev, "version " DRIVER_VERSION |
416 | " time " __TIME__ " " __DATE__ "\n"); | |
1da177e4 | 417 | |
2710e6aa HV |
418 | v4l2_info(v4l2_dev, "found Guillemot MAXI Radio device (io = 0x%x)\n", |
419 | dev->io); | |
1da177e4 LT |
420 | return 0; |
421 | ||
422 | err_out_free_region: | |
423 | release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); | |
424 | err_out: | |
2710e6aa HV |
425 | v4l2_device_unregister(v4l2_dev); |
426 | errfr: | |
427 | kfree(dev); | |
1da177e4 LT |
428 | return -ENODEV; |
429 | } | |
430 | ||
431 | static void __devexit maxiradio_remove_one(struct pci_dev *pdev) | |
432 | { | |
2710e6aa HV |
433 | struct v4l2_device *v4l2_dev = dev_get_drvdata(&pdev->dev); |
434 | struct maxiradio *dev = to_maxiradio(v4l2_dev); | |
435 | ||
436 | video_unregister_device(&dev->vdev); | |
437 | v4l2_device_unregister(&dev->v4l2_dev); | |
1da177e4 LT |
438 | release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); |
439 | } | |
440 | ||
441 | static struct pci_device_id maxiradio_pci_tbl[] = { | |
442 | { PCI_VENDOR_ID_GUILLEMOT, PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO, | |
443 | PCI_ANY_ID, PCI_ANY_ID, }, | |
2710e6aa | 444 | { 0 } |
1da177e4 LT |
445 | }; |
446 | ||
447 | MODULE_DEVICE_TABLE(pci, maxiradio_pci_tbl); | |
448 | ||
449 | static struct pci_driver maxiradio_driver = { | |
450 | .name = "radio-maxiradio", | |
451 | .id_table = maxiradio_pci_tbl, | |
452 | .probe = maxiradio_init_one, | |
453 | .remove = __devexit_p(maxiradio_remove_one), | |
454 | }; | |
455 | ||
456 | static int __init maxiradio_radio_init(void) | |
457 | { | |
9bfab8ce | 458 | return pci_register_driver(&maxiradio_driver); |
1da177e4 LT |
459 | } |
460 | ||
461 | static void __exit maxiradio_radio_exit(void) | |
462 | { | |
463 | pci_unregister_driver(&maxiradio_driver); | |
464 | } | |
465 | ||
466 | module_init(maxiradio_radio_init); | |
467 | module_exit(maxiradio_radio_exit); |