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Commit | Line | Data |
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a52932b4 MR |
1 | /* |
2 | * Empiatech em28x1 audio extension | |
3 | * | |
4 | * Copyright (C) 2006 Markus Rechberger <mrechberger@gmail.com> | |
5 | * | |
4f83e7b3 | 6 | * Copyright (C) 2007-2011 Mauro Carvalho Chehab <mchehab@redhat.com> |
6d79468d | 7 | * - Port to work with the in-kernel driver |
4f83e7b3 | 8 | * - Cleanups, fixes, alsa-controls, etc. |
6d79468d | 9 | * |
a52932b4 MR |
10 | * This driver is based on my previous au600 usb pstn audio driver |
11 | * and inherits all the copyrights | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License as published by | |
15 | * the Free Software Foundation; either version 2 of the License, or | |
16 | * (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | * | |
23 | * You should have received a copy of the GNU General Public License | |
24 | * along with this program; if not, write to the Free Software | |
25 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
26 | */ | |
27 | ||
28 | #include <linux/kernel.h> | |
29 | #include <linux/usb.h> | |
30 | #include <linux/init.h> | |
31 | #include <linux/sound.h> | |
32 | #include <linux/spinlock.h> | |
33 | #include <linux/soundcard.h> | |
34 | #include <linux/slab.h> | |
35 | #include <linux/vmalloc.h> | |
36 | #include <linux/proc_fs.h> | |
6d79468d | 37 | #include <linux/module.h> |
a52932b4 MR |
38 | #include <sound/core.h> |
39 | #include <sound/pcm.h> | |
40 | #include <sound/pcm_params.h> | |
41 | #include <sound/info.h> | |
42 | #include <sound/initval.h> | |
43 | #include <sound/control.h> | |
850d24a5 | 44 | #include <sound/tlv.h> |
67b8d033 | 45 | #include <sound/ac97_codec.h> |
a52932b4 MR |
46 | #include <media/v4l2-common.h> |
47 | #include "em28xx.h" | |
48 | ||
6d79468d MCC |
49 | static int debug; |
50 | module_param(debug, int, 0644); | |
51 | MODULE_PARM_DESC(debug, "activates debug info"); | |
a52932b4 | 52 | |
6d79468d MCC |
53 | #define dprintk(fmt, arg...) do { \ |
54 | if (debug) \ | |
55 | printk(KERN_INFO "em28xx-audio %s: " fmt, \ | |
d80e134d | 56 | __func__, ##arg); \ |
6d79468d | 57 | } while (0) |
a52932b4 | 58 | |
6d79468d | 59 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; |
a52932b4 | 60 | |
aa5a1821 | 61 | static int em28xx_deinit_isoc_audio(struct em28xx *dev) |
a52932b4 | 62 | { |
6d79468d | 63 | int i; |
a52932b4 | 64 | |
6d79468d | 65 | dprintk("Stopping isoc\n"); |
3e099baf | 66 | for (i = 0; i < EM28XX_AUDIO_BUFS; i++) { |
9c06210b RK |
67 | if (!irqs_disabled()) |
68 | usb_kill_urb(dev->adev.urb[i]); | |
69 | else | |
70 | usb_unlink_urb(dev->adev.urb[i]); | |
aa5a1821 | 71 | |
9baed99e MCC |
72 | usb_free_urb(dev->adev.urb[i]); |
73 | dev->adev.urb[i] = NULL; | |
53d12e5a | 74 | |
9c06210b RK |
75 | kfree(dev->adev.transfer_buffer[i]); |
76 | dev->adev.transfer_buffer[i] = NULL; | |
a52932b4 | 77 | } |
a52932b4 | 78 | |
a52932b4 MR |
79 | return 0; |
80 | } | |
81 | ||
a52932b4 MR |
82 | static void em28xx_audio_isocirq(struct urb *urb) |
83 | { | |
6d79468d MCC |
84 | struct em28xx *dev = urb->context; |
85 | int i; | |
86 | unsigned int oldptr; | |
6d79468d MCC |
87 | int period_elapsed = 0; |
88 | int status; | |
89 | unsigned char *cp; | |
90 | unsigned int stride; | |
a52932b4 | 91 | struct snd_pcm_substream *substream; |
6d79468d | 92 | struct snd_pcm_runtime *runtime; |
aa5a1821 RK |
93 | |
94 | switch (urb->status) { | |
95 | case 0: /* success */ | |
96 | case -ETIMEDOUT: /* NAK */ | |
97 | break; | |
98 | case -ECONNRESET: /* kill */ | |
99 | case -ENOENT: | |
100 | case -ESHUTDOWN: | |
101 | return; | |
102 | default: /* error */ | |
103 | dprintk("urb completition error %d.\n", urb->status); | |
104 | break; | |
105 | } | |
106 | ||
39a96b4c MCC |
107 | if (atomic_read(&dev->stream_started) == 0) |
108 | return; | |
109 | ||
9baed99e MCC |
110 | if (dev->adev.capture_pcm_substream) { |
111 | substream = dev->adev.capture_pcm_substream; | |
1a6f11e0 | 112 | runtime = substream->runtime; |
a52932b4 | 113 | stride = runtime->frame_bits >> 3; |
6d79468d | 114 | |
1a6f11e0 MCC |
115 | for (i = 0; i < urb->number_of_packets; i++) { |
116 | int length = | |
117 | urb->iso_frame_desc[i].actual_length / stride; | |
118 | cp = (unsigned char *)urb->transfer_buffer + | |
119 | urb->iso_frame_desc[i].offset; | |
a52932b4 | 120 | |
1a6f11e0 | 121 | if (!length) |
a52932b4 MR |
122 | continue; |
123 | ||
9baed99e | 124 | oldptr = dev->adev.hwptr_done_capture; |
50f3beb5 MCC |
125 | if (oldptr + length >= runtime->buffer_size) { |
126 | unsigned int cnt = | |
127 | runtime->buffer_size - oldptr; | |
128 | memcpy(runtime->dma_area + oldptr * stride, cp, | |
129 | cnt * stride); | |
130 | memcpy(runtime->dma_area, cp + cnt * stride, | |
131 | length * stride - cnt * stride); | |
132 | } else { | |
133 | memcpy(runtime->dma_area + oldptr * stride, cp, | |
134 | length * stride); | |
135 | } | |
136 | ||
50f3beb5 | 137 | snd_pcm_stream_lock(substream); |
50f3beb5 | 138 | |
9baed99e MCC |
139 | dev->adev.hwptr_done_capture += length; |
140 | if (dev->adev.hwptr_done_capture >= | |
1a6f11e0 | 141 | runtime->buffer_size) |
9baed99e | 142 | dev->adev.hwptr_done_capture -= |
1a6f11e0 | 143 | runtime->buffer_size; |
a52932b4 | 144 | |
9baed99e MCC |
145 | dev->adev.capture_transfer_done += length; |
146 | if (dev->adev.capture_transfer_done >= | |
1a6f11e0 | 147 | runtime->period_size) { |
9baed99e | 148 | dev->adev.capture_transfer_done -= |
1a6f11e0 MCC |
149 | runtime->period_size; |
150 | period_elapsed = 1; | |
a52932b4 | 151 | } |
6d79468d | 152 | |
50f3beb5 | 153 | snd_pcm_stream_unlock(substream); |
a52932b4 | 154 | } |
6d79468d | 155 | if (period_elapsed) |
a52932b4 | 156 | snd_pcm_period_elapsed(substream); |
a52932b4 MR |
157 | } |
158 | urb->status = 0; | |
1a6f11e0 | 159 | |
6d79468d MCC |
160 | status = usb_submit_urb(urb, GFP_ATOMIC); |
161 | if (status < 0) { | |
1a6f11e0 MCC |
162 | em28xx_errdev("resubmit of audio urb failed (error=%i)\n", |
163 | status); | |
a52932b4 MR |
164 | } |
165 | return; | |
166 | } | |
167 | ||
a52932b4 MR |
168 | static int em28xx_init_audio_isoc(struct em28xx *dev) |
169 | { | |
6d79468d MCC |
170 | int i, errCode; |
171 | const int sb_size = EM28XX_NUM_AUDIO_PACKETS * | |
172 | EM28XX_AUDIO_MAX_PACKET_SIZE; | |
173 | ||
174 | dprintk("Starting isoc transfers\n"); | |
a52932b4 | 175 | |
1a6f11e0 | 176 | for (i = 0; i < EM28XX_AUDIO_BUFS; i++) { |
a52932b4 | 177 | struct urb *urb; |
1a6f11e0 | 178 | int j, k; |
6d79468d | 179 | |
9baed99e MCC |
180 | dev->adev.transfer_buffer[i] = kmalloc(sb_size, GFP_ATOMIC); |
181 | if (!dev->adev.transfer_buffer[i]) | |
a52932b4 | 182 | return -ENOMEM; |
6d79468d | 183 | |
9baed99e | 184 | memset(dev->adev.transfer_buffer[i], 0x80, sb_size); |
1a6f11e0 | 185 | urb = usb_alloc_urb(EM28XX_NUM_AUDIO_PACKETS, GFP_ATOMIC); |
ff9b3e43 DSL |
186 | if (!urb) { |
187 | em28xx_errdev("usb_alloc_urb failed!\n"); | |
188 | for (j = 0; j < i; j++) { | |
9baed99e MCC |
189 | usb_free_urb(dev->adev.urb[j]); |
190 | kfree(dev->adev.transfer_buffer[j]); | |
ff9b3e43 | 191 | } |
a52932b4 | 192 | return -ENOMEM; |
ff9b3e43 | 193 | } |
6d79468d MCC |
194 | |
195 | urb->dev = dev->udev; | |
196 | urb->context = dev; | |
8ab33626 | 197 | urb->pipe = usb_rcvisocpipe(dev->udev, EM28XX_EP_AUDIO); |
6d79468d | 198 | urb->transfer_flags = URB_ISO_ASAP; |
9baed99e | 199 | urb->transfer_buffer = dev->adev.transfer_buffer[i]; |
6d79468d MCC |
200 | urb->interval = 1; |
201 | urb->complete = em28xx_audio_isocirq; | |
202 | urb->number_of_packets = EM28XX_NUM_AUDIO_PACKETS; | |
203 | urb->transfer_buffer_length = sb_size; | |
204 | ||
205 | for (j = k = 0; j < EM28XX_NUM_AUDIO_PACKETS; | |
206 | j++, k += EM28XX_AUDIO_MAX_PACKET_SIZE) { | |
207 | urb->iso_frame_desc[j].offset = k; | |
208 | urb->iso_frame_desc[j].length = | |
209 | EM28XX_AUDIO_MAX_PACKET_SIZE; | |
a52932b4 | 210 | } |
9baed99e | 211 | dev->adev.urb[i] = urb; |
a52932b4 | 212 | } |
6d79468d | 213 | |
1a6f11e0 | 214 | for (i = 0; i < EM28XX_AUDIO_BUFS; i++) { |
9baed99e | 215 | errCode = usb_submit_urb(dev->adev.urb[i], GFP_ATOMIC); |
1a6f11e0 | 216 | if (errCode) { |
debb7241 | 217 | em28xx_errdev("submit of audio urb failed\n"); |
aa5a1821 | 218 | em28xx_deinit_isoc_audio(dev); |
debb7241 | 219 | atomic_set(&dev->stream_started, 0); |
a52932b4 MR |
220 | return errCode; |
221 | } | |
debb7241 | 222 | |
a52932b4 | 223 | } |
6d79468d | 224 | |
a52932b4 MR |
225 | return 0; |
226 | } | |
227 | ||
6d79468d MCC |
228 | static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream *subs, |
229 | size_t size) | |
230 | { | |
231 | struct snd_pcm_runtime *runtime = subs->runtime; | |
232 | ||
a1a6ee74 | 233 | dprintk("Allocating vbuffer\n"); |
6d79468d MCC |
234 | if (runtime->dma_area) { |
235 | if (runtime->dma_bytes > size) | |
236 | return 0; | |
237 | ||
238 | vfree(runtime->dma_area); | |
239 | } | |
240 | runtime->dma_area = vmalloc(size); | |
241 | if (!runtime->dma_area) | |
242 | return -ENOMEM; | |
243 | ||
244 | runtime->dma_bytes = size; | |
245 | ||
246 | return 0; | |
247 | } | |
248 | ||
249 | static struct snd_pcm_hardware snd_em28xx_hw_capture = { | |
250 | .info = SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
251 | SNDRV_PCM_INFO_MMAP | | |
252 | SNDRV_PCM_INFO_INTERLEAVED | | |
dff0f8c2 | 253 | SNDRV_PCM_INFO_BATCH | |
6d79468d MCC |
254 | SNDRV_PCM_INFO_MMAP_VALID, |
255 | ||
256 | .formats = SNDRV_PCM_FMTBIT_S16_LE, | |
257 | ||
258 | .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_KNOT, | |
259 | ||
260 | .rate_min = 48000, | |
261 | .rate_max = 48000, | |
262 | .channels_min = 2, | |
263 | .channels_max = 2, | |
264 | .buffer_bytes_max = 62720 * 8, /* just about the value in usbaudio.c */ | |
265 | .period_bytes_min = 64, /* 12544/2, */ | |
266 | .period_bytes_max = 12544, | |
267 | .periods_min = 2, | |
268 | .periods_max = 98, /* 12544, */ | |
269 | }; | |
270 | ||
271 | static int snd_em28xx_capture_open(struct snd_pcm_substream *substream) | |
272 | { | |
273 | struct em28xx *dev = snd_pcm_substream_chip(substream); | |
274 | struct snd_pcm_runtime *runtime = substream->runtime; | |
275 | int ret = 0; | |
276 | ||
277 | dprintk("opening device and trying to acquire exclusive lock\n"); | |
278 | ||
83ee87a3 | 279 | if (!dev) { |
0bc23083 | 280 | em28xx_err("BUG: em28xx can't find device struct." |
83ee87a3 MCC |
281 | " Can't proceed with open\n"); |
282 | return -ENODEV; | |
283 | } | |
284 | ||
4f83e7b3 MCC |
285 | runtime->hw = snd_em28xx_hw_capture; |
286 | if ((dev->alt == 0 || dev->audio_ifnum) && dev->adev.users == 0) { | |
287 | if (dev->audio_ifnum) | |
288 | dev->alt = 1; | |
289 | else | |
290 | dev->alt = 7; | |
92ea42f4 | 291 | |
4f83e7b3 MCC |
292 | dprintk("changing alternate number on interface %d to %d\n", |
293 | dev->audio_ifnum, dev->alt); | |
294 | usb_set_interface(dev->udev, dev->audio_ifnum, dev->alt); | |
6d79468d | 295 | |
4f83e7b3 MCC |
296 | /* Sets volume, mute, etc */ |
297 | dev->mute = 0; | |
298 | mutex_lock(&dev->lock); | |
299 | ret = em28xx_audio_analog_set(dev); | |
300 | if (ret < 0) | |
301 | goto err; | |
6d79468d | 302 | |
4f83e7b3 MCC |
303 | dev->adev.users++; |
304 | mutex_unlock(&dev->lock); | |
305 | } | |
6d79468d MCC |
306 | |
307 | snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); | |
9baed99e | 308 | dev->adev.capture_pcm_substream = substream; |
6d79468d MCC |
309 | |
310 | return 0; | |
311 | err: | |
39a96b4c MCC |
312 | mutex_unlock(&dev->lock); |
313 | ||
0bc23083 | 314 | em28xx_err("Error while configuring em28xx mixer\n"); |
6d79468d MCC |
315 | return ret; |
316 | } | |
317 | ||
318 | static int snd_em28xx_pcm_close(struct snd_pcm_substream *substream) | |
319 | { | |
320 | struct em28xx *dev = snd_pcm_substream_chip(substream); | |
6d79468d MCC |
321 | |
322 | dprintk("closing device\n"); | |
323 | ||
324 | dev->mute = 1; | |
92ea42f4 | 325 | mutex_lock(&dev->lock); |
bf510ac3 | 326 | dev->adev.users--; |
39a96b4c MCC |
327 | if (atomic_read(&dev->stream_started) > 0) { |
328 | atomic_set(&dev->stream_started, 0); | |
329 | schedule_work(&dev->wq_trigger); | |
330 | } | |
331 | ||
6d79468d | 332 | em28xx_audio_analog_set(dev); |
75c74d1c RK |
333 | if (substream->runtime->dma_area) { |
334 | dprintk("freeing\n"); | |
335 | vfree(substream->runtime->dma_area); | |
336 | substream->runtime->dma_area = NULL; | |
337 | } | |
92ea42f4 | 338 | mutex_unlock(&dev->lock); |
6d79468d | 339 | |
6d79468d MCC |
340 | return 0; |
341 | } | |
342 | ||
343 | static int snd_em28xx_hw_capture_params(struct snd_pcm_substream *substream, | |
344 | struct snd_pcm_hw_params *hw_params) | |
345 | { | |
6d79468d MCC |
346 | int ret; |
347 | ||
348 | dprintk("Setting capture parameters\n"); | |
349 | ||
350 | ret = snd_pcm_alloc_vmalloc_buffer(substream, | |
351 | params_buffer_bytes(hw_params)); | |
00d2e7ad MCC |
352 | if (ret < 0) |
353 | return ret; | |
e92ba283 HV |
354 | #if 0 |
355 | /* TODO: set up em28xx audio chip to deliver the correct audio format, | |
356 | current default is 48000hz multiplexed => 96000hz mono | |
357 | which shouldn't matter since analogue TV only supports mono */ | |
358 | unsigned int channels, rate, format; | |
359 | ||
6d79468d MCC |
360 | format = params_format(hw_params); |
361 | rate = params_rate(hw_params); | |
362 | channels = params_channels(hw_params); | |
e92ba283 | 363 | #endif |
6d79468d | 364 | |
6d79468d MCC |
365 | return 0; |
366 | } | |
367 | ||
368 | static int snd_em28xx_hw_capture_free(struct snd_pcm_substream *substream) | |
369 | { | |
370 | struct em28xx *dev = snd_pcm_substream_chip(substream); | |
371 | ||
372 | dprintk("Stop capture, if needed\n"); | |
373 | ||
39a96b4c MCC |
374 | if (atomic_read(&dev->stream_started) > 0) { |
375 | atomic_set(&dev->stream_started, 0); | |
376 | schedule_work(&dev->wq_trigger); | |
377 | } | |
6d79468d MCC |
378 | |
379 | return 0; | |
380 | } | |
381 | ||
382 | static int snd_em28xx_prepare(struct snd_pcm_substream *substream) | |
383 | { | |
96fbf771 DH |
384 | struct em28xx *dev = snd_pcm_substream_chip(substream); |
385 | ||
386 | dev->adev.hwptr_done_capture = 0; | |
387 | dev->adev.capture_transfer_done = 0; | |
388 | ||
6d79468d MCC |
389 | return 0; |
390 | } | |
391 | ||
39a96b4c MCC |
392 | static void audio_trigger(struct work_struct *work) |
393 | { | |
394 | struct em28xx *dev = container_of(work, struct em28xx, wq_trigger); | |
395 | ||
396 | if (atomic_read(&dev->stream_started)) { | |
397 | dprintk("starting capture"); | |
398 | em28xx_init_audio_isoc(dev); | |
399 | } else { | |
400 | dprintk("stopping capture"); | |
401 | em28xx_deinit_isoc_audio(dev); | |
402 | } | |
403 | } | |
404 | ||
6d79468d MCC |
405 | static int snd_em28xx_capture_trigger(struct snd_pcm_substream *substream, |
406 | int cmd) | |
407 | { | |
408 | struct em28xx *dev = snd_pcm_substream_chip(substream); | |
00d2e7ad | 409 | int retval = 0; |
6d79468d | 410 | |
6d79468d | 411 | switch (cmd) { |
dff0f8c2 MCC |
412 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: /* fall through */ |
413 | case SNDRV_PCM_TRIGGER_RESUME: /* fall through */ | |
6d79468d | 414 | case SNDRV_PCM_TRIGGER_START: |
39a96b4c | 415 | atomic_set(&dev->stream_started, 1); |
df39ca64 | 416 | break; |
dff0f8c2 MCC |
417 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: /* fall through */ |
418 | case SNDRV_PCM_TRIGGER_SUSPEND: /* fall through */ | |
6d79468d | 419 | case SNDRV_PCM_TRIGGER_STOP: |
dff0f8c2 | 420 | atomic_set(&dev->stream_started, 0); |
df39ca64 | 421 | break; |
6d79468d | 422 | default: |
df39ca64 | 423 | retval = -EINVAL; |
6d79468d | 424 | } |
39a96b4c | 425 | schedule_work(&dev->wq_trigger); |
00d2e7ad | 426 | return retval; |
6d79468d MCC |
427 | } |
428 | ||
1a6f11e0 MCC |
429 | static snd_pcm_uframes_t snd_em28xx_capture_pointer(struct snd_pcm_substream |
430 | *substream) | |
a52932b4 | 431 | { |
a1a6ee74 | 432 | unsigned long flags; |
53d12e5a | 433 | struct em28xx *dev; |
a52932b4 | 434 | snd_pcm_uframes_t hwptr_done; |
53d12e5a | 435 | |
a52932b4 | 436 | dev = snd_pcm_substream_chip(substream); |
00bc0645 | 437 | spin_lock_irqsave(&dev->adev.slock, flags); |
9baed99e | 438 | hwptr_done = dev->adev.hwptr_done_capture; |
00bc0645 | 439 | spin_unlock_irqrestore(&dev->adev.slock, flags); |
6d79468d | 440 | |
a52932b4 MR |
441 | return hwptr_done; |
442 | } | |
443 | ||
444 | static struct page *snd_pcm_get_vmalloc_page(struct snd_pcm_substream *subs, | |
445 | unsigned long offset) | |
446 | { | |
447 | void *pageptr = subs->runtime->dma_area + offset; | |
6d79468d | 448 | |
a52932b4 MR |
449 | return vmalloc_to_page(pageptr); |
450 | } | |
451 | ||
850d24a5 MCC |
452 | /* |
453 | * AC97 volume control support | |
454 | */ | |
455 | static int em28xx_vol_info(struct snd_kcontrol *kcontrol, | |
456 | struct snd_ctl_elem_info *info) | |
457 | { | |
458 | info->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
459 | info->count = 2; | |
460 | info->value.integer.min = 0; | |
461 | info->value.integer.max = 0x1f; | |
462 | ||
463 | return 0; | |
464 | } | |
465 | ||
850d24a5 MCC |
466 | static int em28xx_vol_put(struct snd_kcontrol *kcontrol, |
467 | struct snd_ctl_elem_value *value) | |
468 | { | |
469 | struct em28xx *dev = snd_kcontrol_chip(kcontrol); | |
71d7d83e MCC |
470 | u16 val = (0x1f - (value->value.integer.value[0] & 0x1f)) | |
471 | (0x1f - (value->value.integer.value[1] & 0x1f)) << 8; | |
850d24a5 MCC |
472 | int rc; |
473 | ||
474 | mutex_lock(&dev->lock); | |
475 | rc = em28xx_read_ac97(dev, kcontrol->private_value); | |
476 | if (rc < 0) | |
477 | goto err; | |
478 | ||
43131a2c | 479 | val |= rc & 0x8000; /* Preserve the mute flag */ |
850d24a5 MCC |
480 | |
481 | rc = em28xx_write_ac97(dev, kcontrol->private_value, val); | |
66cb6957 MCC |
482 | if (rc < 0) |
483 | goto err; | |
484 | ||
485 | dprintk("%sleft vol %d, right vol %d (0x%04x) to ac97 volume control 0x%04x\n", | |
486 | (val & 0x8000) ? "muted " : "", | |
487 | 0x1f - ((val >> 8) & 0x1f), 0x1f - (val & 0x1f), | |
488 | val, (int)kcontrol->private_value); | |
850d24a5 MCC |
489 | |
490 | err: | |
491 | mutex_unlock(&dev->lock); | |
492 | return rc; | |
493 | } | |
494 | ||
495 | static int em28xx_vol_get(struct snd_kcontrol *kcontrol, | |
496 | struct snd_ctl_elem_value *value) | |
497 | { | |
498 | struct em28xx *dev = snd_kcontrol_chip(kcontrol); | |
499 | int val; | |
500 | ||
501 | mutex_lock(&dev->lock); | |
502 | val = em28xx_read_ac97(dev, kcontrol->private_value); | |
503 | mutex_unlock(&dev->lock); | |
504 | if (val < 0) | |
505 | return val; | |
506 | ||
66cb6957 MCC |
507 | dprintk("%sleft vol %d, right vol %d (0x%04x) from ac97 volume control 0x%04x\n", |
508 | (val & 0x8000) ? "muted " : "", | |
509 | 0x1f - ((val >> 8) & 0x1f), 0x1f - (val & 0x1f), | |
510 | val, (int)kcontrol->private_value); | |
511 | ||
71d7d83e MCC |
512 | value->value.integer.value[0] = 0x1f - (val & 0x1f); |
513 | value->value.integer.value[1] = 0x1f - ((val << 8) & 0x1f); | |
850d24a5 MCC |
514 | |
515 | return 0; | |
516 | } | |
517 | ||
43131a2c MCC |
518 | static int em28xx_vol_put_mute(struct snd_kcontrol *kcontrol, |
519 | struct snd_ctl_elem_value *value) | |
520 | { | |
521 | struct em28xx *dev = snd_kcontrol_chip(kcontrol); | |
522 | u16 val = value->value.integer.value[0]; | |
523 | int rc; | |
524 | ||
525 | mutex_lock(&dev->lock); | |
526 | rc = em28xx_read_ac97(dev, kcontrol->private_value); | |
527 | if (rc < 0) | |
528 | goto err; | |
529 | ||
530 | if (val) | |
71d7d83e | 531 | rc &= 0x1f1f; |
43131a2c | 532 | else |
71d7d83e | 533 | rc |= 0x8000; |
43131a2c MCC |
534 | |
535 | rc = em28xx_write_ac97(dev, kcontrol->private_value, rc); | |
66cb6957 MCC |
536 | if (rc < 0) |
537 | goto err; | |
538 | ||
539 | dprintk("%sleft vol %d, right vol %d (0x%04x) to ac97 volume control 0x%04x\n", | |
540 | (val & 0x8000) ? "muted " : "", | |
541 | 0x1f - ((val >> 8) & 0x1f), 0x1f - (val & 0x1f), | |
542 | val, (int)kcontrol->private_value); | |
43131a2c MCC |
543 | |
544 | err: | |
545 | mutex_unlock(&dev->lock); | |
546 | return rc; | |
547 | } | |
548 | ||
549 | static int em28xx_vol_get_mute(struct snd_kcontrol *kcontrol, | |
550 | struct snd_ctl_elem_value *value) | |
551 | { | |
552 | struct em28xx *dev = snd_kcontrol_chip(kcontrol); | |
553 | int val; | |
554 | ||
555 | mutex_lock(&dev->lock); | |
556 | val = em28xx_read_ac97(dev, kcontrol->private_value); | |
557 | mutex_unlock(&dev->lock); | |
558 | if (val < 0) | |
559 | return val; | |
560 | ||
561 | if (val & 0x8000) | |
43131a2c | 562 | value->value.integer.value[0] = 0; |
71d7d83e MCC |
563 | else |
564 | value->value.integer.value[0] = 1; | |
43131a2c | 565 | |
66cb6957 MCC |
566 | dprintk("%sleft vol %d, right vol %d (0x%04x) from ac97 volume control 0x%04x\n", |
567 | (val & 0x8000) ? "muted " : "", | |
568 | 0x1f - ((val >> 8) & 0x1f), 0x1f - (val & 0x1f), | |
569 | val, (int)kcontrol->private_value); | |
570 | ||
43131a2c MCC |
571 | return 0; |
572 | } | |
573 | ||
850d24a5 MCC |
574 | static const DECLARE_TLV_DB_SCALE(em28xx_db_scale, -3450, 150, 0); |
575 | ||
576 | static int em28xx_cvol_new(struct snd_card *card, struct em28xx *dev, | |
577 | char *name, int id) | |
578 | { | |
579 | int err; | |
43131a2c | 580 | char ctl_name[44]; |
850d24a5 | 581 | struct snd_kcontrol *kctl; |
43131a2c MCC |
582 | struct snd_kcontrol_new tmp; |
583 | ||
584 | memset (&tmp, 0, sizeof(tmp)); | |
585 | tmp.iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
586 | tmp.private_value = id, | |
587 | tmp.name = ctl_name, | |
588 | ||
589 | /* Add Mute Control */ | |
590 | sprintf(ctl_name, "%s Switch", name); | |
591 | tmp.get = em28xx_vol_get_mute; | |
592 | tmp.put = em28xx_vol_put_mute; | |
593 | tmp.info = snd_ctl_boolean_mono_info; | |
850d24a5 | 594 | kctl = snd_ctl_new1(&tmp, dev); |
43131a2c MCC |
595 | err = snd_ctl_add(card, kctl); |
596 | if (err < 0) | |
597 | return err; | |
66cb6957 MCC |
598 | dprintk("Added control %s for ac97 volume control 0x%04x\n", |
599 | ctl_name, id); | |
850d24a5 | 600 | |
43131a2c MCC |
601 | memset (&tmp, 0, sizeof(tmp)); |
602 | tmp.iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
603 | tmp.private_value = id, | |
604 | tmp.name = ctl_name, | |
605 | ||
606 | /* Add Volume Control */ | |
607 | sprintf(ctl_name, "%s Volume", name); | |
608 | tmp.get = em28xx_vol_get; | |
609 | tmp.put = em28xx_vol_put; | |
610 | tmp.info = em28xx_vol_info; | |
611 | tmp.tlv.p = em28xx_db_scale, | |
612 | kctl = snd_ctl_new1(&tmp, dev); | |
850d24a5 MCC |
613 | err = snd_ctl_add(card, kctl); |
614 | if (err < 0) | |
615 | return err; | |
66cb6957 MCC |
616 | dprintk("Added control %s for ac97 volume control 0x%04x\n", |
617 | ctl_name, id); | |
850d24a5 MCC |
618 | |
619 | return 0; | |
620 | } | |
621 | ||
850d24a5 MCC |
622 | /* |
623 | * register/unregister code and data | |
624 | */ | |
a52932b4 | 625 | static struct snd_pcm_ops snd_em28xx_pcm_capture = { |
6d79468d MCC |
626 | .open = snd_em28xx_capture_open, |
627 | .close = snd_em28xx_pcm_close, | |
628 | .ioctl = snd_pcm_lib_ioctl, | |
a52932b4 | 629 | .hw_params = snd_em28xx_hw_capture_params, |
6d79468d MCC |
630 | .hw_free = snd_em28xx_hw_capture_free, |
631 | .prepare = snd_em28xx_prepare, | |
632 | .trigger = snd_em28xx_capture_trigger, | |
633 | .pointer = snd_em28xx_capture_pointer, | |
634 | .page = snd_pcm_get_vmalloc_page, | |
a52932b4 MR |
635 | }; |
636 | ||
a52932b4 MR |
637 | static int em28xx_audio_init(struct em28xx *dev) |
638 | { | |
9baed99e | 639 | struct em28xx_audio *adev = &dev->adev; |
6d79468d MCC |
640 | struct snd_pcm *pcm; |
641 | struct snd_card *card; | |
642 | static int devnr; | |
65c9fd46 | 643 | int err; |
6d79468d | 644 | |
4f83e7b3 | 645 | if (!dev->has_alsa_audio || dev->audio_ifnum < 0) { |
df619181 | 646 | /* This device does not support the extension (in this case |
24a613e4 DH |
647 | the device is expecting the snd-usb-audio module or |
648 | doesn't have analog audio support at all) */ | |
df619181 DH |
649 | return 0; |
650 | } | |
651 | ||
4f83e7b3 | 652 | printk(KERN_INFO "em28xx-audio.c: probing for em28xx Audio Vendor Class\n"); |
6d79468d MCC |
653 | printk(KERN_INFO "em28xx-audio.c: Copyright (C) 2006 Markus " |
654 | "Rechberger\n"); | |
4f83e7b3 | 655 | printk(KERN_INFO "em28xx-audio.c: Copyright (C) 2007-2011 Mauro Carvalho Chehab\n"); |
6d79468d | 656 | |
758021bf TI |
657 | err = snd_card_create(index[devnr], "Em28xx Audio", THIS_MODULE, 0, |
658 | &card); | |
659 | if (err < 0) | |
660 | return err; | |
a52932b4 MR |
661 | |
662 | spin_lock_init(&adev->slock); | |
1f6340bd MCC |
663 | err = snd_pcm_new(card, "Em28xx Audio", 0, 0, 1, &pcm); |
664 | if (err < 0) { | |
665 | snd_card_free(card); | |
666 | return err; | |
667 | } | |
668 | ||
a52932b4 MR |
669 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_em28xx_pcm_capture); |
670 | pcm->info_flags = 0; | |
671 | pcm->private_data = dev; | |
1a6f11e0 | 672 | strcpy(pcm->name, "Empia 28xx Capture"); |
7662b00c NS |
673 | |
674 | snd_card_set_dev(card, &dev->udev->dev); | |
4a3eaee4 | 675 | strcpy(card->driver, "Em28xx-Audio"); |
a52932b4 | 676 | strcpy(card->shortname, "Em28xx Audio"); |
1a6f11e0 | 677 | strcpy(card->longname, "Empia Em28xx Audio"); |
a52932b4 | 678 | |
39a96b4c MCC |
679 | INIT_WORK(&dev->wq_trigger, audio_trigger); |
680 | ||
850d24a5 | 681 | if (dev->audio_mode.ac97 != EM28XX_NO_AC97) { |
67b8d033 EG |
682 | em28xx_cvol_new(card, dev, "Video", AC97_VIDEO); |
683 | em28xx_cvol_new(card, dev, "Line In", AC97_LINE); | |
684 | em28xx_cvol_new(card, dev, "Phone", AC97_PHONE); | |
685 | em28xx_cvol_new(card, dev, "Microphone", AC97_MIC); | |
686 | em28xx_cvol_new(card, dev, "CD", AC97_CD); | |
687 | em28xx_cvol_new(card, dev, "AUX", AC97_AUX); | |
688 | em28xx_cvol_new(card, dev, "PCM", AC97_PCM); | |
689 | ||
690 | em28xx_cvol_new(card, dev, "Master", AC97_MASTER); | |
691 | em28xx_cvol_new(card, dev, "Line", AC97_HEADPHONE); | |
692 | em28xx_cvol_new(card, dev, "Mono", AC97_MASTER_MONO); | |
693 | em28xx_cvol_new(card, dev, "LFE", AC97_CENTER_LFE_MASTER); | |
694 | em28xx_cvol_new(card, dev, "Surround", AC97_SURROUND_MASTER); | |
850d24a5 MCC |
695 | } |
696 | ||
6d79468d MCC |
697 | err = snd_card_register(card); |
698 | if (err < 0) { | |
a52932b4 | 699 | snd_card_free(card); |
1f6340bd | 700 | return err; |
a52932b4 | 701 | } |
1a6f11e0 MCC |
702 | adev->sndcard = card; |
703 | adev->udev = dev->udev; | |
6d79468d | 704 | |
a52932b4 MR |
705 | return 0; |
706 | } | |
707 | ||
708 | static int em28xx_audio_fini(struct em28xx *dev) | |
709 | { | |
1a6f11e0 | 710 | if (dev == NULL) |
a52932b4 | 711 | return 0; |
6d79468d | 712 | |
24a613e4 | 713 | if (dev->has_alsa_audio != 1) { |
df619181 | 714 | /* This device does not support the extension (in this case |
24a613e4 DH |
715 | the device is expecting the snd-usb-audio module or |
716 | doesn't have analog audio support at all) */ | |
df619181 DH |
717 | return 0; |
718 | } | |
719 | ||
9baed99e MCC |
720 | if (dev->adev.sndcard) { |
721 | snd_card_free(dev->adev.sndcard); | |
722 | dev->adev.sndcard = NULL; | |
a52932b4 | 723 | } |
6d79468d | 724 | |
a52932b4 MR |
725 | return 0; |
726 | } | |
727 | ||
728 | static struct em28xx_ops audio_ops = { | |
6d79468d | 729 | .id = EM28XX_AUDIO, |
1a6f11e0 MCC |
730 | .name = "Em28xx Audio Extension", |
731 | .init = em28xx_audio_init, | |
732 | .fini = em28xx_audio_fini, | |
a52932b4 MR |
733 | }; |
734 | ||
735 | static int __init em28xx_alsa_register(void) | |
736 | { | |
a52932b4 MR |
737 | return em28xx_register_extension(&audio_ops); |
738 | } | |
739 | ||
740 | static void __exit em28xx_alsa_unregister(void) | |
741 | { | |
742 | em28xx_unregister_extension(&audio_ops); | |
743 | } | |
744 | ||
745 | MODULE_LICENSE("GPL"); | |
746 | MODULE_AUTHOR("Markus Rechberger <mrechberger@gmail.com>"); | |
4f83e7b3 | 747 | MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>"); |
a52932b4 MR |
748 | MODULE_DESCRIPTION("Em28xx Audio driver"); |
749 | ||
750 | module_init(em28xx_alsa_register); | |
751 | module_exit(em28xx_alsa_unregister); |