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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
45struct 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
53static 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
76void 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
100static const struct snd_pcm_hardware snd_solo_pcm_hw = {
101 .info = (SNDRV_PCM_INFO_MMAP |
102 SNDRV_PCM_INFO_INTERLEAVED |
103 SNDRV_PCM_INFO_BLOCK_TRANSFER |
104 SNDRV_PCM_INFO_MMAP_VALID),
105 .formats = SNDRV_PCM_FMTBIT_U8,
106 .rates = SNDRV_PCM_RATE_8000,
107 .rate_min = SAMPLERATE,
108 .rate_max = SAMPLERATE,
109 .channels_min = 1,
110 .channels_max = 1,
111 .buffer_bytes_max = G723_PERIOD_BYTES * PERIODS,
112 .period_bytes_min = G723_PERIOD_BYTES,
113 .period_bytes_max = G723_PERIOD_BYTES,
114 .periods_min = PERIODS,
115 .periods_max = PERIODS,
116};
117
118static int snd_solo_pcm_open(struct snd_pcm_substream *ss)
119{
120 struct solo_dev *solo_dev = snd_pcm_substream_chip(ss);
121 struct solo_snd_pcm *solo_pcm;
122
123 solo_pcm = kzalloc(sizeof(*solo_pcm), GFP_KERNEL);
124 if (solo_pcm == NULL)
125 goto oom;
126
127 solo_pcm->g723_buf = dma_alloc_coherent(&solo_dev->pdev->dev,
128 G723_PERIOD_BYTES,
129 &solo_pcm->g723_dma,
130 GFP_KERNEL);
131 if (solo_pcm->g723_buf == NULL)
132 goto oom;
133
134 spin_lock_init(&solo_pcm->lock);
135 solo_pcm->solo_dev = solo_dev;
136 ss->runtime->hw = snd_solo_pcm_hw;
137
138 snd_pcm_substream_chip(ss) = solo_pcm;
139
140 return 0;
141
142oom:
143 kfree(solo_pcm);
144 return -ENOMEM;
145}
146
147static int snd_solo_pcm_close(struct snd_pcm_substream *ss)
148{
149 struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);
150
151 snd_pcm_substream_chip(ss) = solo_pcm->solo_dev;
152 dma_free_coherent(&solo_pcm->solo_dev->pdev->dev, G723_PERIOD_BYTES,
153 solo_pcm->g723_buf, solo_pcm->g723_dma);
154 kfree(solo_pcm);
155
156 return 0;
157}
158
159static int snd_solo_pcm_trigger(struct snd_pcm_substream *ss, int cmd)
160{
161 struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);
162 struct solo_dev *solo_dev = solo_pcm->solo_dev;
163 int ret = 0;
164
165 spin_lock(&solo_pcm->lock);
166
167 switch (cmd) {
168 case SNDRV_PCM_TRIGGER_START:
169 if (solo_pcm->on == 0) {
170
171 if (atomic_inc_return(&solo_dev->snd_users) == 1)
172 solo_irq_on(solo_dev, SOLO_IRQ_G723);
173 solo_pcm->on = 1;
174 }
175 break;
176 case SNDRV_PCM_TRIGGER_STOP:
177 if (solo_pcm->on) {
178
179 if (atomic_dec_return(&solo_dev->snd_users) == 0)
180 solo_irq_off(solo_dev, SOLO_IRQ_G723);
181 solo_pcm->on = 0;
182 }
183 break;
184 default:
185 ret = -EINVAL;
186 }
187
188 spin_unlock(&solo_pcm->lock);
189
190 return ret;
191}
192
193static int snd_solo_pcm_prepare(struct snd_pcm_substream *ss)
194{
195 return 0;
196}
197
198static snd_pcm_uframes_t snd_solo_pcm_pointer(struct snd_pcm_substream *ss)
199{
200 struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);
201 struct solo_dev *solo_dev = solo_pcm->solo_dev;
202 snd_pcm_uframes_t idx = solo_reg_read(solo_dev, SOLO_AUDIO_STA) & 0x1f;
203
204 return idx * G723_FRAMES_PER_PAGE;
205}
206
207static int snd_solo_pcm_copy_user(struct snd_pcm_substream *ss, int channel,
208 unsigned long pos, void __user *dst,
209 unsigned long count)
210{
211 struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);
212 struct solo_dev *solo_dev = solo_pcm->solo_dev;
213 int err, i;
214
215 for (i = 0; i < (count / G723_FRAMES_PER_PAGE); i++) {
216 int page = (pos / G723_FRAMES_PER_PAGE) + i;
217
218 err = solo_p2m_dma_t(solo_dev, 0, solo_pcm->g723_dma,
219 SOLO_G723_EXT_ADDR(solo_dev) +
220 (page * G723_PERIOD_BLOCK) +
221 (ss->number * G723_PERIOD_BYTES),
222 G723_PERIOD_BYTES, 0, 0);
223 if (err)
224 return err;
225
226 if (copy_to_user(dst, solo_pcm->g723_buf, G723_PERIOD_BYTES))
227 return -EFAULT;
228 dst += G723_PERIOD_BYTES;
229 }
230
231 return 0;
232}
233
234static int snd_solo_pcm_copy_kernel(struct snd_pcm_substream *ss, int channel,
235 unsigned long pos, void *dst,
236 unsigned long count)
237{
238 struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);
239 struct solo_dev *solo_dev = solo_pcm->solo_dev;
240 int err, i;
241
242 for (i = 0; i < (count / G723_FRAMES_PER_PAGE); i++) {
243 int page = (pos / G723_FRAMES_PER_PAGE) + i;
244
245 err = solo_p2m_dma_t(solo_dev, 0, solo_pcm->g723_dma,
246 SOLO_G723_EXT_ADDR(solo_dev) +
247 (page * G723_PERIOD_BLOCK) +
248 (ss->number * G723_PERIOD_BYTES),
249 G723_PERIOD_BYTES, 0, 0);
250 if (err)
251 return err;
252
253 memcpy(dst, solo_pcm->g723_buf, G723_PERIOD_BYTES);
254 dst += G723_PERIOD_BYTES;
255 }
256
257 return 0;
258}
259
260static const struct snd_pcm_ops snd_solo_pcm_ops = {
261 .open = snd_solo_pcm_open,
262 .close = snd_solo_pcm_close,
263 .prepare = snd_solo_pcm_prepare,
264 .trigger = snd_solo_pcm_trigger,
265 .pointer = snd_solo_pcm_pointer,
266 .copy_user = snd_solo_pcm_copy_user,
267 .copy_kernel = snd_solo_pcm_copy_kernel,
268};
269
270static int snd_solo_capture_volume_info(struct snd_kcontrol *kcontrol,
271 struct snd_ctl_elem_info *info)
272{
273 info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
274 info->count = 1;
275 info->value.integer.min = 0;
276 info->value.integer.max = 15;
277 info->value.integer.step = 1;
278
279 return 0;
280}
281
282static int snd_solo_capture_volume_get(struct snd_kcontrol *kcontrol,
283 struct snd_ctl_elem_value *value)
284{
285 struct solo_dev *solo_dev = snd_kcontrol_chip(kcontrol);
286 u8 ch = value->id.numid - 1;
287
288 value->value.integer.value[0] = tw28_get_audio_gain(solo_dev, ch);
289
290 return 0;
291}
292
293static int snd_solo_capture_volume_put(struct snd_kcontrol *kcontrol,
294 struct snd_ctl_elem_value *value)
295{
296 struct solo_dev *solo_dev = snd_kcontrol_chip(kcontrol);
297 u8 ch = value->id.numid - 1;
298 u8 old_val;
299
300 old_val = tw28_get_audio_gain(solo_dev, ch);
301 if (old_val == value->value.integer.value[0])
302 return 0;
303
304 tw28_set_audio_gain(solo_dev, ch, value->value.integer.value[0]);
305
306 return 1;
307}
308
309static const struct snd_kcontrol_new snd_solo_capture_volume = {
310 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
311 .name = "Capture Volume",
312 .info = snd_solo_capture_volume_info,
313 .get = snd_solo_capture_volume_get,
314 .put = snd_solo_capture_volume_put,
315};
316
317static int solo_snd_pcm_init(struct solo_dev *solo_dev)
318{
319 struct snd_card *card = solo_dev->snd_card;
320 struct snd_pcm *pcm;
321 struct snd_pcm_substream *ss;
322 int ret;
323 int i;
324
325 ret = snd_pcm_new(card, card->driver, 0, 0, solo_dev->nr_chans,
326 &pcm);
327 if (ret < 0)
328 return ret;
329
330 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
331 &snd_solo_pcm_ops);
332
333 snd_pcm_chip(pcm) = solo_dev;
334 pcm->info_flags = 0;
335 strscpy(pcm->name, card->shortname, sizeof(pcm->name));
336
337 for (i = 0, ss = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
338 ss; ss = ss->next, i++)
339 sprintf(ss->name, "Camera #%d Audio", i);
340
341 snd_pcm_set_managed_buffer_all(pcm,
342 SNDRV_DMA_TYPE_CONTINUOUS,
343 NULL,
344 G723_PERIOD_BYTES * PERIODS,
345 G723_PERIOD_BYTES * PERIODS);
346
347 solo_dev->snd_pcm = pcm;
348
349 return 0;
350}
351
352int solo_g723_init(struct solo_dev *solo_dev)
353{
354 static struct snd_device_ops ops = { };
355 struct snd_card *card;
356 struct snd_kcontrol_new kctl;
357 char name[32];
358 int ret;
359
360 atomic_set(&solo_dev->snd_users, 0);
361
362
363 sprintf(name, "Softlogic%d", solo_dev->vfd->num);
364
365 ret = snd_card_new(&solo_dev->pdev->dev,
366 SNDRV_DEFAULT_IDX1, name, THIS_MODULE, 0,
367 &solo_dev->snd_card);
368 if (ret < 0)
369 return ret;
370
371 card = solo_dev->snd_card;
372
373 strscpy(card->driver, SOLO6X10_NAME, sizeof(card->driver));
374 strscpy(card->shortname, "SOLO-6x10 Audio", sizeof(card->shortname));
375 sprintf(card->longname, "%s on %s IRQ %d", card->shortname,
376 pci_name(solo_dev->pdev), solo_dev->pdev->irq);
377
378 ret = snd_device_new(card, SNDRV_DEV_LOWLEVEL, solo_dev, &ops);
379 if (ret < 0)
380 goto snd_error;
381
382
383 strscpy(card->mixername, "SOLO-6x10", sizeof(card->mixername));
384 kctl = snd_solo_capture_volume;
385 kctl.count = solo_dev->nr_chans;
386
387 ret = snd_ctl_add(card, snd_ctl_new1(&kctl, solo_dev));
388 if (ret < 0)
389 goto snd_error;
390
391 ret = solo_snd_pcm_init(solo_dev);
392 if (ret < 0)
393 goto snd_error;
394
395 ret = snd_card_register(card);
396 if (ret < 0)
397 goto snd_error;
398
399 solo_g723_config(solo_dev);
400
401 dev_info(&solo_dev->pdev->dev, "Alsa sound card as %s\n", name);
402
403 return 0;
404
405snd_error:
406 snd_card_free(card);
407 return ret;
408}
409
410void solo_g723_exit(struct solo_dev *solo_dev)
411{
412 if (!solo_dev->snd_card)
413 return;
414
415 solo_reg_write(solo_dev, SOLO_AUDIO_CONTROL, 0);
416 solo_irq_off(solo_dev, SOLO_IRQ_G723);
417
418 snd_card_free(solo_dev->snd_card);
419 solo_dev->snd_card = NULL;
420}
421
