Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* Terratec ActiveRadio ISA Standalone card driver for Linux radio support |
2 | * (c) 1999 R. Offermanns (rolf@offermanns.de) | |
3 | * based on the aimslab radio driver from M. Kirkwood | |
4 | * many thanks to Michael Becker and Friedhelm Birth (from TerraTec) | |
4286c6f6 | 5 | * |
1da177e4 LT |
6 | * |
7 | * History: | |
8 | * 1999-05-21 First preview release | |
4286c6f6 | 9 | * |
1da177e4 LT |
10 | * Notes on the hardware: |
11 | * There are two "main" chips on the card: | |
12 | * - Philips OM5610 (http://www-us.semiconductors.philips.com/acrobat/datasheets/OM5610_2.pdf) | |
13 | * - Philips SAA6588 (http://www-us.semiconductors.philips.com/acrobat/datasheets/SAA6588_1.pdf) | |
14 | * (you can get the datasheet at the above links) | |
15 | * | |
16 | * Frequency control is done digitally -- ie out(port,encodefreq(95.8)); | |
17 | * Volume Control is done digitally | |
18 | * | |
19 | * there is a I2C controlled RDS decoder (SAA6588) onboard, which i would like to support someday | |
20 | * (as soon i have understand how to get started :) | |
21 | * If you can help me out with that, please contact me!! | |
22 | * | |
4286c6f6 | 23 | * |
55ac7b69 | 24 | * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org> |
1da177e4 LT |
25 | */ |
26 | ||
27 | #include <linux/module.h> /* Modules */ | |
28 | #include <linux/init.h> /* Initdata */ | |
fb911ee8 | 29 | #include <linux/ioport.h> /* request_region */ |
1da177e4 LT |
30 | #include <linux/delay.h> /* udelay */ |
31 | #include <asm/io.h> /* outb, outb_p */ | |
32 | #include <asm/uaccess.h> /* copy to/from user */ | |
55ac7b69 | 33 | #include <linux/videodev2.h> /* kernel radio structs */ |
5e87efa3 | 34 | #include <media/v4l2-common.h> |
35ea11ff | 35 | #include <media/v4l2-ioctl.h> |
1da177e4 LT |
36 | #include <linux/spinlock.h> |
37 | ||
55ac7b69 MCC |
38 | #include <linux/version.h> /* for KERNEL_VERSION MACRO */ |
39 | #define RADIO_VERSION KERNEL_VERSION(0,0,2) | |
40 | ||
41 | static struct v4l2_queryctrl radio_qctrl[] = { | |
42 | { | |
43 | .id = V4L2_CID_AUDIO_MUTE, | |
44 | .name = "Mute", | |
45 | .minimum = 0, | |
46 | .maximum = 1, | |
47 | .default_value = 1, | |
48 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
49 | },{ | |
50 | .id = V4L2_CID_AUDIO_VOLUME, | |
51 | .name = "Volume", | |
52 | .minimum = 0, | |
53 | .maximum = 0xff, | |
54 | .step = 1, | |
55 | .default_value = 0xff, | |
56 | .type = V4L2_CTRL_TYPE_INTEGER, | |
57 | } | |
58 | }; | |
59 | ||
1da177e4 LT |
60 | #ifndef CONFIG_RADIO_TERRATEC_PORT |
61 | #define CONFIG_RADIO_TERRATEC_PORT 0x590 | |
62 | #endif | |
63 | ||
64 | /**************** this ones are for the terratec *******************/ | |
65 | #define BASEPORT 0x590 | |
66 | #define VOLPORT 0x591 | |
67 | #define WRT_DIS 0x00 | |
68 | #define CLK_OFF 0x00 | |
69 | #define IIC_DATA 0x01 | |
70 | #define IIC_CLK 0x02 | |
71 | #define DATA 0x04 | |
72 | #define CLK_ON 0x08 | |
73 | #define WRT_EN 0x10 | |
74 | /*******************************************************************/ | |
75 | ||
4286c6f6 | 76 | static int io = CONFIG_RADIO_TERRATEC_PORT; |
1da177e4 LT |
77 | static int radio_nr = -1; |
78 | static spinlock_t lock; | |
79 | ||
80 | struct tt_device | |
81 | { | |
82 | int port; | |
83 | int curvol; | |
84 | unsigned long curfreq; | |
85 | int muted; | |
86 | }; | |
87 | ||
88 | ||
89 | /* local things */ | |
90 | ||
91 | static void cardWriteVol(int volume) | |
92 | { | |
93 | int i; | |
94 | volume = volume+(volume * 32); // change both channels | |
95 | spin_lock(&lock); | |
96 | for (i=0;i<8;i++) | |
97 | { | |
98 | if (volume & (0x80>>i)) | |
99 | outb(0x80, VOLPORT); | |
100 | else outb(0x00, VOLPORT); | |
101 | } | |
102 | spin_unlock(&lock); | |
103 | } | |
104 | ||
105 | ||
106 | ||
107 | static void tt_mute(struct tt_device *dev) | |
108 | { | |
109 | dev->muted = 1; | |
110 | cardWriteVol(0); | |
111 | } | |
112 | ||
113 | static int tt_setvol(struct tt_device *dev, int vol) | |
114 | { | |
4286c6f6 | 115 | |
1da177e4 LT |
116 | // printk(KERN_ERR "setvol called, vol = %d\n", vol); |
117 | ||
118 | if(vol == dev->curvol) { /* requested volume = current */ | |
119 | if (dev->muted) { /* user is unmuting the card */ | |
120 | dev->muted = 0; | |
121 | cardWriteVol(vol); /* enable card */ | |
4286c6f6 MCC |
122 | } |
123 | ||
1da177e4 LT |
124 | return 0; |
125 | } | |
126 | ||
127 | if(vol == 0) { /* volume = 0 means mute the card */ | |
128 | cardWriteVol(0); /* "turn off card" by setting vol to 0 */ | |
129 | dev->curvol = vol; /* track the volume state! */ | |
130 | return 0; | |
131 | } | |
132 | ||
133 | dev->muted = 0; | |
4286c6f6 | 134 | |
1da177e4 | 135 | cardWriteVol(vol); |
4286c6f6 | 136 | |
1da177e4 LT |
137 | dev->curvol = vol; |
138 | ||
139 | return 0; | |
140 | ||
141 | } | |
142 | ||
143 | ||
144 | /* this is the worst part in this driver */ | |
145 | /* many more or less strange things are going on here, but hey, it works :) */ | |
146 | ||
147 | static int tt_setfreq(struct tt_device *dev, unsigned long freq1) | |
4286c6f6 | 148 | { |
1da177e4 LT |
149 | int freq; |
150 | int i; | |
151 | int p; | |
152 | int temp; | |
153 | long rest; | |
4286c6f6 | 154 | |
1da177e4 LT |
155 | unsigned char buffer[25]; /* we have to bit shift 25 registers */ |
156 | freq = freq1/160; /* convert the freq. to a nice to handle value */ | |
157 | for(i=24;i>-1;i--) | |
158 | buffer[i]=0; | |
159 | ||
160 | rest = freq*10+10700; /* i once had understood what is going on here */ | |
161 | /* maybe some wise guy (friedhelm?) can comment this stuff */ | |
162 | i=13; | |
163 | p=10; | |
164 | temp=102400; | |
165 | while (rest!=0) | |
166 | { | |
167 | if (rest%temp == rest) | |
168 | buffer[i] = 0; | |
4286c6f6 | 169 | else |
1da177e4 | 170 | { |
4286c6f6 | 171 | buffer[i] = 1; |
1da177e4 LT |
172 | rest = rest-temp; |
173 | } | |
174 | i--; | |
175 | p--; | |
176 | temp = temp/2; | |
b930e1d8 | 177 | } |
1da177e4 LT |
178 | |
179 | spin_lock(&lock); | |
4286c6f6 | 180 | |
1da177e4 LT |
181 | for (i=24;i>-1;i--) /* bit shift the values to the radiocard */ |
182 | { | |
4286c6f6 | 183 | if (buffer[i]==1) |
1da177e4 LT |
184 | { |
185 | outb(WRT_EN|DATA, BASEPORT); | |
186 | outb(WRT_EN|DATA|CLK_ON , BASEPORT); | |
187 | outb(WRT_EN|DATA, BASEPORT); | |
188 | } | |
189 | else | |
190 | { | |
191 | outb(WRT_EN|0x00, BASEPORT); | |
192 | outb(WRT_EN|0x00|CLK_ON , BASEPORT); | |
193 | } | |
194 | } | |
4286c6f6 MCC |
195 | outb(0x00, BASEPORT); |
196 | ||
1da177e4 | 197 | spin_unlock(&lock); |
4286c6f6 MCC |
198 | |
199 | return 0; | |
1da177e4 LT |
200 | } |
201 | ||
202 | static int tt_getsigstr(struct tt_device *dev) /* TODO */ | |
203 | { | |
204 | if (inb(io) & 2) /* bit set = no signal present */ | |
205 | return 0; | |
206 | return 1; /* signal present */ | |
207 | } | |
208 | ||
1de69238 DL |
209 | static int vidioc_querycap(struct file *file, void *priv, |
210 | struct v4l2_capability *v) | |
211 | { | |
212 | strlcpy(v->driver, "radio-terratec", sizeof(v->driver)); | |
213 | strlcpy(v->card, "ActiveRadio", sizeof(v->card)); | |
214 | sprintf(v->bus_info, "ISA"); | |
215 | v->version = RADIO_VERSION; | |
216 | v->capabilities = V4L2_CAP_TUNER; | |
217 | return 0; | |
218 | } | |
1da177e4 | 219 | |
1de69238 DL |
220 | static int vidioc_g_tuner(struct file *file, void *priv, |
221 | struct v4l2_tuner *v) | |
1da177e4 LT |
222 | { |
223 | struct video_device *dev = video_devdata(file); | |
1de69238 | 224 | struct tt_device *tt = dev->priv; |
4286c6f6 | 225 | |
1de69238 DL |
226 | if (v->index > 0) |
227 | return -EINVAL; | |
55ac7b69 | 228 | |
1de69238 DL |
229 | strcpy(v->name, "FM"); |
230 | v->type = V4L2_TUNER_RADIO; | |
231 | v->rangelow = (87*16000); | |
232 | v->rangehigh = (108*16000); | |
233 | v->rxsubchans = V4L2_TUNER_SUB_MONO; | |
234 | v->capability = V4L2_TUNER_CAP_LOW; | |
235 | v->audmode = V4L2_TUNER_MODE_MONO; | |
236 | v->signal = 0xFFFF*tt_getsigstr(tt); | |
237 | return 0; | |
238 | } | |
55ac7b69 | 239 | |
1de69238 DL |
240 | static int vidioc_s_tuner(struct file *file, void *priv, |
241 | struct v4l2_tuner *v) | |
242 | { | |
243 | if (v->index > 0) | |
244 | return -EINVAL; | |
245 | return 0; | |
246 | } | |
55ac7b69 | 247 | |
1de69238 DL |
248 | static int vidioc_s_frequency(struct file *file, void *priv, |
249 | struct v4l2_frequency *f) | |
250 | { | |
251 | struct video_device *dev = video_devdata(file); | |
252 | struct tt_device *tt = dev->priv; | |
55ac7b69 | 253 | |
1de69238 DL |
254 | tt->curfreq = f->frequency; |
255 | tt_setfreq(tt, tt->curfreq); | |
256 | return 0; | |
257 | } | |
55ac7b69 | 258 | |
1de69238 DL |
259 | static int vidioc_g_frequency(struct file *file, void *priv, |
260 | struct v4l2_frequency *f) | |
261 | { | |
262 | struct video_device *dev = video_devdata(file); | |
263 | struct tt_device *tt = dev->priv; | |
55ac7b69 | 264 | |
1de69238 DL |
265 | f->type = V4L2_TUNER_RADIO; |
266 | f->frequency = tt->curfreq; | |
267 | return 0; | |
268 | } | |
55ac7b69 | 269 | |
1de69238 DL |
270 | static int vidioc_queryctrl(struct file *file, void *priv, |
271 | struct v4l2_queryctrl *qc) | |
272 | { | |
273 | int i; | |
55ac7b69 | 274 | |
1de69238 DL |
275 | for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) { |
276 | if (qc->id && qc->id == radio_qctrl[i].id) { | |
277 | memcpy(qc, &(radio_qctrl[i]), | |
278 | sizeof(*qc)); | |
1da177e4 LT |
279 | return 0; |
280 | } | |
1de69238 DL |
281 | } |
282 | return -EINVAL; | |
283 | } | |
55ac7b69 | 284 | |
1de69238 DL |
285 | static int vidioc_g_ctrl(struct file *file, void *priv, |
286 | struct v4l2_control *ctrl) | |
287 | { | |
288 | struct video_device *dev = video_devdata(file); | |
289 | struct tt_device *tt = dev->priv; | |
55ac7b69 | 290 | |
1de69238 DL |
291 | switch (ctrl->id) { |
292 | case V4L2_CID_AUDIO_MUTE: | |
293 | if (tt->muted) | |
294 | ctrl->value = 1; | |
295 | else | |
296 | ctrl->value = 0; | |
297 | return 0; | |
298 | case V4L2_CID_AUDIO_VOLUME: | |
299 | ctrl->value = tt->curvol * 6554; | |
300 | return 0; | |
301 | } | |
302 | return -EINVAL; | |
303 | } | |
55ac7b69 | 304 | |
1de69238 DL |
305 | static int vidioc_s_ctrl(struct file *file, void *priv, |
306 | struct v4l2_control *ctrl) | |
307 | { | |
308 | struct video_device *dev = video_devdata(file); | |
309 | struct tt_device *tt = dev->priv; | |
310 | ||
311 | switch (ctrl->id) { | |
312 | case V4L2_CID_AUDIO_MUTE: | |
313 | if (ctrl->value) | |
314 | tt_mute(tt); | |
315 | else | |
316 | tt_setvol(tt,tt->curvol); | |
317 | return 0; | |
318 | case V4L2_CID_AUDIO_VOLUME: | |
319 | tt_setvol(tt,ctrl->value); | |
320 | return 0; | |
1da177e4 | 321 | } |
1de69238 DL |
322 | return -EINVAL; |
323 | } | |
324 | ||
325 | static int vidioc_g_audio(struct file *file, void *priv, | |
326 | struct v4l2_audio *a) | |
327 | { | |
328 | if (a->index > 1) | |
329 | return -EINVAL; | |
330 | ||
331 | strcpy(a->name, "Radio"); | |
332 | a->capability = V4L2_AUDCAP_STEREO; | |
333 | return 0; | |
334 | } | |
335 | ||
336 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) | |
337 | { | |
338 | *i = 0; | |
339 | return 0; | |
1da177e4 LT |
340 | } |
341 | ||
1de69238 | 342 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) |
1da177e4 | 343 | { |
1de69238 DL |
344 | if (i != 0) |
345 | return -EINVAL; | |
346 | return 0; | |
347 | } | |
348 | ||
349 | static int vidioc_s_audio(struct file *file, void *priv, | |
350 | struct v4l2_audio *a) | |
351 | { | |
352 | if (a->index != 0) | |
353 | return -EINVAL; | |
354 | return 0; | |
1da177e4 LT |
355 | } |
356 | ||
357 | static struct tt_device terratec_unit; | |
358 | ||
fa027c2a | 359 | static const struct file_operations terratec_fops = { |
1da177e4 LT |
360 | .owner = THIS_MODULE, |
361 | .open = video_exclusive_open, | |
362 | .release = video_exclusive_release, | |
1de69238 | 363 | .ioctl = video_ioctl2, |
078ff795 | 364 | #ifdef CONFIG_COMPAT |
0d0fbf81 | 365 | .compat_ioctl = v4l_compat_ioctl32, |
078ff795 | 366 | #endif |
1da177e4 LT |
367 | .llseek = no_llseek, |
368 | }; | |
369 | ||
a399810c | 370 | static const struct v4l2_ioctl_ops terratec_ioctl_ops = { |
1de69238 DL |
371 | .vidioc_querycap = vidioc_querycap, |
372 | .vidioc_g_tuner = vidioc_g_tuner, | |
373 | .vidioc_s_tuner = vidioc_s_tuner, | |
374 | .vidioc_g_frequency = vidioc_g_frequency, | |
375 | .vidioc_s_frequency = vidioc_s_frequency, | |
376 | .vidioc_queryctrl = vidioc_queryctrl, | |
377 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
378 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
379 | .vidioc_g_audio = vidioc_g_audio, | |
380 | .vidioc_s_audio = vidioc_s_audio, | |
381 | .vidioc_g_input = vidioc_g_input, | |
382 | .vidioc_s_input = vidioc_s_input, | |
1da177e4 LT |
383 | }; |
384 | ||
a399810c HV |
385 | static struct video_device terratec_radio = { |
386 | .owner = THIS_MODULE, | |
387 | .name = "TerraTec ActiveRadio", | |
388 | .type = VID_TYPE_TUNER, | |
389 | .fops = &terratec_fops, | |
390 | .ioctl_ops = &terratec_ioctl_ops, | |
391 | }; | |
392 | ||
1da177e4 LT |
393 | static int __init terratec_init(void) |
394 | { | |
395 | if(io==-1) | |
396 | { | |
397 | printk(KERN_ERR "You must set an I/O address with io=0x???\n"); | |
398 | return -EINVAL; | |
399 | } | |
4286c6f6 | 400 | if (!request_region(io, 2, "terratec")) |
1da177e4 LT |
401 | { |
402 | printk(KERN_ERR "TerraTec: port 0x%x already in use\n", io); | |
403 | return -EBUSY; | |
404 | } | |
405 | ||
406 | terratec_radio.priv=&terratec_unit; | |
4286c6f6 | 407 | |
1da177e4 | 408 | spin_lock_init(&lock); |
4286c6f6 | 409 | |
1da177e4 LT |
410 | if(video_register_device(&terratec_radio, VFL_TYPE_RADIO, radio_nr)==-1) |
411 | { | |
412 | release_region(io,2); | |
413 | return -EINVAL; | |
414 | } | |
4286c6f6 | 415 | |
1da177e4 LT |
416 | printk(KERN_INFO "TERRATEC ActivRadio Standalone card driver.\n"); |
417 | ||
4286c6f6 | 418 | /* mute card - prevents noisy bootups */ |
1da177e4 LT |
419 | |
420 | /* this ensures that the volume is all the way down */ | |
421 | cardWriteVol(0); | |
422 | terratec_unit.curvol = 0; | |
423 | ||
424 | return 0; | |
425 | } | |
426 | ||
427 | MODULE_AUTHOR("R.OFFERMANNS & others"); | |
428 | MODULE_DESCRIPTION("A driver for the TerraTec ActiveRadio Standalone radio card."); | |
429 | MODULE_LICENSE("GPL"); | |
430 | module_param(io, int, 0); | |
431 | MODULE_PARM_DESC(io, "I/O address of the TerraTec ActiveRadio card (0x590 or 0x591)"); | |
432 | module_param(radio_nr, int, 0); | |
433 | ||
434 | static void __exit terratec_cleanup_module(void) | |
435 | { | |
436 | video_unregister_device(&terratec_radio); | |
437 | release_region(io,2); | |
4286c6f6 | 438 | printk(KERN_INFO "TERRATEC ActivRadio Standalone card driver unloaded.\n"); |
1da177e4 LT |
439 | } |
440 | ||
441 | module_init(terratec_init); | |
442 | module_exit(terratec_cleanup_module); | |
443 |