This source file includes following definitions.
- solo_g723_config
- solo_g723_isr
- snd_solo_hw_params
- snd_solo_hw_free
- snd_solo_pcm_open
- snd_solo_pcm_close
- snd_solo_pcm_trigger
- snd_solo_pcm_prepare
- snd_solo_pcm_pointer
- snd_solo_pcm_copy_user
- snd_solo_pcm_copy_kernel
- snd_solo_capture_volume_info
- snd_solo_capture_volume_get
- snd_solo_capture_volume_put
- solo_snd_pcm_init
- solo_g723_init
- solo_g723_exit
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12 #include <linux/kernel.h>
13 #include <linux/mempool.h>
14 #include <linux/poll.h>
15 #include <linux/kthread.h>
16 #include <linux/freezer.h>
17 #include <linux/module.h>
18 #include <linux/slab.h>
19
20 #include <sound/core.h>
21 #include <sound/initval.h>
22 #include <sound/pcm.h>
23 #include <sound/control.h>
24
25 #include "solo6x10.h"
26 #include "solo6x10-tw28.h"
27
28 #define G723_FDMA_PAGES 32
29 #define G723_PERIOD_BYTES 48
30 #define G723_PERIOD_BLOCK 1024
31 #define G723_FRAMES_PER_PAGE 48
32
33
34 #define OUTMODE_MASK 0x300
35
36 #define SAMPLERATE 8000
37 #define BITRATE 25
38
39
40
41
42 #define PERIODS G723_FDMA_PAGES
43 #define G723_INTR_ORDER 4
44
45 struct solo_snd_pcm {
46 int on;
47 spinlock_t lock;
48 struct solo_dev *solo_dev;
49 u8 *g723_buf;
50 dma_addr_t g723_dma;
51 };
52
53 static void solo_g723_config(struct solo_dev *solo_dev)
54 {
55 int clk_div;
56
57 clk_div = (solo_dev->clock_mhz * 1000000)
58 / (SAMPLERATE * (BITRATE * 2) * 2);
59
60 solo_reg_write(solo_dev, SOLO_AUDIO_SAMPLE,
61 SOLO_AUDIO_BITRATE(BITRATE)
62 | SOLO_AUDIO_CLK_DIV(clk_div));
63
64 solo_reg_write(solo_dev, SOLO_AUDIO_FDMA_INTR,
65 SOLO_AUDIO_FDMA_INTERVAL(1)
66 | SOLO_AUDIO_INTR_ORDER(G723_INTR_ORDER)
67 | SOLO_AUDIO_FDMA_BASE(SOLO_G723_EXT_ADDR(solo_dev) >> 16));
68
69 solo_reg_write(solo_dev, SOLO_AUDIO_CONTROL,
70 SOLO_AUDIO_ENABLE
71 | SOLO_AUDIO_I2S_MODE
72 | SOLO_AUDIO_I2S_MULTI(3)
73 | SOLO_AUDIO_MODE(OUTMODE_MASK));
74 }
75
76 void solo_g723_isr(struct solo_dev *solo_dev)
77 {
78 struct snd_pcm_str *pstr =
79 &solo_dev->snd_pcm->streams[SNDRV_PCM_STREAM_CAPTURE];
80 struct snd_pcm_substream *ss;
81 struct solo_snd_pcm *solo_pcm;
82
83 for (ss = pstr->substream; ss != NULL; ss = ss->next) {
84 if (snd_pcm_substream_chip(ss) == NULL)
85 continue;
86
87
88 if (snd_pcm_substream_chip(ss) == solo_dev)
89 continue;
90
91
92 solo_pcm = snd_pcm_substream_chip(ss);
93 if (!solo_pcm->on)
94 continue;
95
96 snd_pcm_period_elapsed(ss);
97 }
98 }
99
100 static int snd_solo_hw_params(struct snd_pcm_substream *ss,
101 struct snd_pcm_hw_params *hw_params)
102 {
103 return snd_pcm_lib_malloc_pages(ss, params_buffer_bytes(hw_params));
104 }
105
106 static int snd_solo_hw_free(struct snd_pcm_substream *ss)
107 {
108 return snd_pcm_lib_free_pages(ss);
109 }
110
111 static const struct snd_pcm_hardware snd_solo_pcm_hw = {
112 .info = (SNDRV_PCM_INFO_MMAP |
113 SNDRV_PCM_INFO_INTERLEAVED |
114 SNDRV_PCM_INFO_BLOCK_TRANSFER |
115 SNDRV_PCM_INFO_MMAP_VALID),
116 .formats = SNDRV_PCM_FMTBIT_U8,
117 .rates = SNDRV_PCM_RATE_8000,
118 .rate_min = SAMPLERATE,
119 .rate_max = SAMPLERATE,
120 .channels_min = 1,
121 .channels_max = 1,
122 .buffer_bytes_max = G723_PERIOD_BYTES * PERIODS,
123 .period_bytes_min = G723_PERIOD_BYTES,
124 .period_bytes_max = G723_PERIOD_BYTES,
125 .periods_min = PERIODS,
126 .periods_max = PERIODS,
127 };
128
129 static int snd_solo_pcm_open(struct snd_pcm_substream *ss)
130 {
131 struct solo_dev *solo_dev = snd_pcm_substream_chip(ss);
132 struct solo_snd_pcm *solo_pcm;
133
134 solo_pcm = kzalloc(sizeof(*solo_pcm), GFP_KERNEL);
135 if (solo_pcm == NULL)
136 goto oom;
137
138 solo_pcm->g723_buf = pci_alloc_consistent(solo_dev->pdev,
139 G723_PERIOD_BYTES,
140 &solo_pcm->g723_dma);
141 if (solo_pcm->g723_buf == NULL)
142 goto oom;
143
144 spin_lock_init(&solo_pcm->lock);
145 solo_pcm->solo_dev = solo_dev;
146 ss->runtime->hw = snd_solo_pcm_hw;
147
148 snd_pcm_substream_chip(ss) = solo_pcm;
149
150 return 0;
151
152 oom:
153 kfree(solo_pcm);
154 return -ENOMEM;
155 }
156
157 static int snd_solo_pcm_close(struct snd_pcm_substream *ss)
158 {
159 struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);
160
161 snd_pcm_substream_chip(ss) = solo_pcm->solo_dev;
162 pci_free_consistent(solo_pcm->solo_dev->pdev, G723_PERIOD_BYTES,
163 solo_pcm->g723_buf, solo_pcm->g723_dma);
164 kfree(solo_pcm);
165
166 return 0;
167 }
168
169 static int snd_solo_pcm_trigger(struct snd_pcm_substream *ss, int cmd)
170 {
171 struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);
172 struct solo_dev *solo_dev = solo_pcm->solo_dev;
173 int ret = 0;
174
175 spin_lock(&solo_pcm->lock);
176
177 switch (cmd) {
178 case SNDRV_PCM_TRIGGER_START:
179 if (solo_pcm->on == 0) {
180
181 if (atomic_inc_return(&solo_dev->snd_users) == 1)
182 solo_irq_on(solo_dev, SOLO_IRQ_G723);
183 solo_pcm->on = 1;
184 }
185 break;
186 case SNDRV_PCM_TRIGGER_STOP:
187 if (solo_pcm->on) {
188
189 if (atomic_dec_return(&solo_dev->snd_users) == 0)
190 solo_irq_off(solo_dev, SOLO_IRQ_G723);
191 solo_pcm->on = 0;
192 }
193 break;
194 default:
195 ret = -EINVAL;
196 }
197
198 spin_unlock(&solo_pcm->lock);
199
200 return ret;
201 }
202
203 static int snd_solo_pcm_prepare(struct snd_pcm_substream *ss)
204 {
205 return 0;
206 }
207
208 static snd_pcm_uframes_t snd_solo_pcm_pointer(struct snd_pcm_substream *ss)
209 {
210 struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);
211 struct solo_dev *solo_dev = solo_pcm->solo_dev;
212 snd_pcm_uframes_t idx = solo_reg_read(solo_dev, SOLO_AUDIO_STA) & 0x1f;
213
214 return idx * G723_FRAMES_PER_PAGE;
215 }
216
217 static int snd_solo_pcm_copy_user(struct snd_pcm_substream *ss, int channel,
218 unsigned long pos, void __user *dst,
219 unsigned long count)
220 {
221 struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);
222 struct solo_dev *solo_dev = solo_pcm->solo_dev;
223 int err, i;
224
225 for (i = 0; i < (count / G723_FRAMES_PER_PAGE); i++) {
226 int page = (pos / G723_FRAMES_PER_PAGE) + i;
227
228 err = solo_p2m_dma_t(solo_dev, 0, solo_pcm->g723_dma,
229 SOLO_G723_EXT_ADDR(solo_dev) +
230 (page * G723_PERIOD_BLOCK) +
231 (ss->number * G723_PERIOD_BYTES),
232 G723_PERIOD_BYTES, 0, 0);
233 if (err)
234 return err;
235
236 if (copy_to_user(dst, solo_pcm->g723_buf, G723_PERIOD_BYTES))
237 return -EFAULT;
238 dst += G723_PERIOD_BYTES;
239 }
240
241 return 0;
242 }
243
244 static int snd_solo_pcm_copy_kernel(struct snd_pcm_substream *ss, int channel,
245 unsigned long pos, void *dst,
246 unsigned long count)
247 {
248 struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);
249 struct solo_dev *solo_dev = solo_pcm->solo_dev;
250 int err, i;
251
252 for (i = 0; i < (count / G723_FRAMES_PER_PAGE); i++) {
253 int page = (pos / G723_FRAMES_PER_PAGE) + i;
254
255 err = solo_p2m_dma_t(solo_dev, 0, solo_pcm->g723_dma,
256 SOLO_G723_EXT_ADDR(solo_dev) +
257 (page * G723_PERIOD_BLOCK) +
258 (ss->number * G723_PERIOD_BYTES),
259 G723_PERIOD_BYTES, 0, 0);
260 if (err)
261 return err;
262
263 memcpy(dst, solo_pcm->g723_buf, G723_PERIOD_BYTES);
264 dst += G723_PERIOD_BYTES;
265 }
266
267 return 0;
268 }
269
270 static const struct snd_pcm_ops snd_solo_pcm_ops = {
271 .open = snd_solo_pcm_open,
272 .close = snd_solo_pcm_close,
273 .ioctl = snd_pcm_lib_ioctl,
274 .hw_params = snd_solo_hw_params,
275 .hw_free = snd_solo_hw_free,
276 .prepare = snd_solo_pcm_prepare,
277 .trigger = snd_solo_pcm_trigger,
278 .pointer = snd_solo_pcm_pointer,
279 .copy_user = snd_solo_pcm_copy_user,
280 .copy_kernel = snd_solo_pcm_copy_kernel,
281 };
282
283 static int snd_solo_capture_volume_info(struct snd_kcontrol *kcontrol,
284 struct snd_ctl_elem_info *info)
285 {
286 info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
287 info->count = 1;
288 info->value.integer.min = 0;
289 info->value.integer.max = 15;
290 info->value.integer.step = 1;
291
292 return 0;
293 }
294
295 static int snd_solo_capture_volume_get(struct snd_kcontrol *kcontrol,
296 struct snd_ctl_elem_value *value)
297 {
298 struct solo_dev *solo_dev = snd_kcontrol_chip(kcontrol);
299 u8 ch = value->id.numid - 1;
300
301 value->value.integer.value[0] = tw28_get_audio_gain(solo_dev, ch);
302
303 return 0;
304 }
305
306 static int snd_solo_capture_volume_put(struct snd_kcontrol *kcontrol,
307 struct snd_ctl_elem_value *value)
308 {
309 struct solo_dev *solo_dev = snd_kcontrol_chip(kcontrol);
310 u8 ch = value->id.numid - 1;
311 u8 old_val;
312
313 old_val = tw28_get_audio_gain(solo_dev, ch);
314 if (old_val == value->value.integer.value[0])
315 return 0;
316
317 tw28_set_audio_gain(solo_dev, ch, value->value.integer.value[0]);
318
319 return 1;
320 }
321
322 static const struct snd_kcontrol_new snd_solo_capture_volume = {
323 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
324 .name = "Capture Volume",
325 .info = snd_solo_capture_volume_info,
326 .get = snd_solo_capture_volume_get,
327 .put = snd_solo_capture_volume_put,
328 };
329
330 static int solo_snd_pcm_init(struct solo_dev *solo_dev)
331 {
332 struct snd_card *card = solo_dev->snd_card;
333 struct snd_pcm *pcm;
334 struct snd_pcm_substream *ss;
335 int ret;
336 int i;
337
338 ret = snd_pcm_new(card, card->driver, 0, 0, solo_dev->nr_chans,
339 &pcm);
340 if (ret < 0)
341 return ret;
342
343 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
344 &snd_solo_pcm_ops);
345
346 snd_pcm_chip(pcm) = solo_dev;
347 pcm->info_flags = 0;
348 strscpy(pcm->name, card->shortname, sizeof(pcm->name));
349
350 for (i = 0, ss = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
351 ss; ss = ss->next, i++)
352 sprintf(ss->name, "Camera #%d Audio", i);
353
354 snd_pcm_lib_preallocate_pages_for_all(pcm,
355 SNDRV_DMA_TYPE_CONTINUOUS,
356 snd_dma_continuous_data(GFP_KERNEL),
357 G723_PERIOD_BYTES * PERIODS,
358 G723_PERIOD_BYTES * PERIODS);
359
360 solo_dev->snd_pcm = pcm;
361
362 return 0;
363 }
364
365 int solo_g723_init(struct solo_dev *solo_dev)
366 {
367 static struct snd_device_ops ops = { };
368 struct snd_card *card;
369 struct snd_kcontrol_new kctl;
370 char name[32];
371 int ret;
372
373 atomic_set(&solo_dev->snd_users, 0);
374
375
376 sprintf(name, "Softlogic%d", solo_dev->vfd->num);
377
378 ret = snd_card_new(&solo_dev->pdev->dev,
379 SNDRV_DEFAULT_IDX1, name, THIS_MODULE, 0,
380 &solo_dev->snd_card);
381 if (ret < 0)
382 return ret;
383
384 card = solo_dev->snd_card;
385
386 strscpy(card->driver, SOLO6X10_NAME, sizeof(card->driver));
387 strscpy(card->shortname, "SOLO-6x10 Audio", sizeof(card->shortname));
388 sprintf(card->longname, "%s on %s IRQ %d", card->shortname,
389 pci_name(solo_dev->pdev), solo_dev->pdev->irq);
390
391 ret = snd_device_new(card, SNDRV_DEV_LOWLEVEL, solo_dev, &ops);
392 if (ret < 0)
393 goto snd_error;
394
395
396 strscpy(card->mixername, "SOLO-6x10", sizeof(card->mixername));
397 kctl = snd_solo_capture_volume;
398 kctl.count = solo_dev->nr_chans;
399
400 ret = snd_ctl_add(card, snd_ctl_new1(&kctl, solo_dev));
401 if (ret < 0)
402 return ret;
403
404 ret = solo_snd_pcm_init(solo_dev);
405 if (ret < 0)
406 goto snd_error;
407
408 ret = snd_card_register(card);
409 if (ret < 0)
410 goto snd_error;
411
412 solo_g723_config(solo_dev);
413
414 dev_info(&solo_dev->pdev->dev, "Alsa sound card as %s\n", name);
415
416 return 0;
417
418 snd_error:
419 snd_card_free(card);
420 return ret;
421 }
422
423 void solo_g723_exit(struct solo_dev *solo_dev)
424 {
425 if (!solo_dev->snd_card)
426 return;
427
428 solo_reg_write(solo_dev, SOLO_AUDIO_CONTROL, 0);
429 solo_irq_off(solo_dev, SOLO_IRQ_G723);
430
431 snd_card_free(solo_dev->snd_card);
432 solo_dev->snd_card = NULL;
433 }