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