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8#include <linux/clk.h>
9#include <linux/gpio/consumer.h>
10#include <linux/module.h>
11#include <linux/of.h>
12#include <sound/pcm_params.h>
13#include <sound/soc.h>
14
15#include "i2s.h"
16#include "../codecs/wm5110.h"
17
18
19
20
21
22#define MCLK_RATE 24000000U
23
24#define TM2_DAI_AIF1 0
25#define TM2_DAI_AIF2 1
26
27struct tm2_machine_priv {
28 struct snd_soc_component *component;
29 unsigned int sysclk_rate;
30 struct gpio_desc *gpio_mic_bias;
31};
32
33static int tm2_start_sysclk(struct snd_soc_card *card)
34{
35 struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(card);
36 struct snd_soc_component *component = priv->component;
37 int ret;
38
39 ret = snd_soc_component_set_pll(component, WM5110_FLL1_REFCLK,
40 ARIZONA_FLL_SRC_MCLK1,
41 MCLK_RATE,
42 priv->sysclk_rate);
43 if (ret < 0) {
44 dev_err(component->dev, "Failed to set FLL1 source: %d\n", ret);
45 return ret;
46 }
47
48 ret = snd_soc_component_set_pll(component, WM5110_FLL1,
49 ARIZONA_FLL_SRC_MCLK1,
50 MCLK_RATE,
51 priv->sysclk_rate);
52 if (ret < 0) {
53 dev_err(component->dev, "Failed to start FLL1: %d\n", ret);
54 return ret;
55 }
56
57 ret = snd_soc_component_set_sysclk(component, ARIZONA_CLK_SYSCLK,
58 ARIZONA_CLK_SRC_FLL1,
59 priv->sysclk_rate,
60 SND_SOC_CLOCK_IN);
61 if (ret < 0) {
62 dev_err(component->dev, "Failed to set SYSCLK source: %d\n", ret);
63 return ret;
64 }
65
66 return 0;
67}
68
69static int tm2_stop_sysclk(struct snd_soc_card *card)
70{
71 struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(card);
72 struct snd_soc_component *component = priv->component;
73 int ret;
74
75 ret = snd_soc_component_set_pll(component, WM5110_FLL1, 0, 0, 0);
76 if (ret < 0) {
77 dev_err(component->dev, "Failed to stop FLL1: %d\n", ret);
78 return ret;
79 }
80
81 ret = snd_soc_component_set_sysclk(component, ARIZONA_CLK_SYSCLK,
82 ARIZONA_CLK_SRC_FLL1, 0, 0);
83 if (ret < 0) {
84 dev_err(component->dev, "Failed to stop SYSCLK: %d\n", ret);
85 return ret;
86 }
87
88 return 0;
89}
90
91static int tm2_aif1_hw_params(struct snd_pcm_substream *substream,
92 struct snd_pcm_hw_params *params)
93{
94 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
95 struct snd_soc_component *component = snd_soc_rtd_to_codec(rtd, 0)->component;
96 struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(rtd->card);
97
98 switch (params_rate(params)) {
99 case 4000:
100 case 8000:
101 case 12000:
102 case 16000:
103 case 24000:
104 case 32000:
105 case 48000:
106 case 96000:
107 case 192000:
108
109 priv->sysclk_rate = 147456000U;
110 break;
111 case 11025:
112 case 22050:
113 case 44100:
114 case 88200:
115 case 176400:
116
117 priv->sysclk_rate = 135475200U;
118 break;
119 default:
120 dev_err(component->dev, "Not supported sample rate: %d\n",
121 params_rate(params));
122 return -EINVAL;
123 }
124
125 return tm2_start_sysclk(rtd->card);
126}
127
128static const struct snd_soc_ops tm2_aif1_ops = {
129 .hw_params = tm2_aif1_hw_params,
130};
131
132static int tm2_aif2_hw_params(struct snd_pcm_substream *substream,
133 struct snd_pcm_hw_params *params)
134{
135 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
136 struct snd_soc_component *component = snd_soc_rtd_to_codec(rtd, 0)->component;
137 unsigned int asyncclk_rate;
138 int ret;
139
140 switch (params_rate(params)) {
141 case 8000:
142 case 12000:
143 case 16000:
144
145 asyncclk_rate = 49152000U;
146 break;
147 case 11025:
148
149 asyncclk_rate = 45158400U;
150 break;
151 default:
152 dev_err(component->dev, "Not supported sample rate: %d\n",
153 params_rate(params));
154 return -EINVAL;
155 }
156
157 ret = snd_soc_component_set_pll(component, WM5110_FLL2_REFCLK,
158 ARIZONA_FLL_SRC_MCLK1,
159 MCLK_RATE,
160 asyncclk_rate);
161 if (ret < 0) {
162 dev_err(component->dev, "Failed to set FLL2 source: %d\n", ret);
163 return ret;
164 }
165
166 ret = snd_soc_component_set_pll(component, WM5110_FLL2,
167 ARIZONA_FLL_SRC_MCLK1,
168 MCLK_RATE,
169 asyncclk_rate);
170 if (ret < 0) {
171 dev_err(component->dev, "Failed to start FLL2: %d\n", ret);
172 return ret;
173 }
174
175 ret = snd_soc_component_set_sysclk(component, ARIZONA_CLK_ASYNCCLK,
176 ARIZONA_CLK_SRC_FLL2,
177 asyncclk_rate,
178 SND_SOC_CLOCK_IN);
179 if (ret < 0) {
180 dev_err(component->dev, "Failed to set ASYNCCLK source: %d\n", ret);
181 return ret;
182 }
183
184 return 0;
185}
186
187static int tm2_aif2_hw_free(struct snd_pcm_substream *substream)
188{
189 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
190 struct snd_soc_component *component = snd_soc_rtd_to_codec(rtd, 0)->component;
191 int ret;
192
193
194 ret = snd_soc_component_set_pll(component, WM5110_FLL2, ARIZONA_FLL_SRC_MCLK1,
195 0, 0);
196 if (ret < 0)
197 dev_err(component->dev, "Failed to stop FLL2: %d\n", ret);
198
199 return ret;
200}
201
202static const struct snd_soc_ops tm2_aif2_ops = {
203 .hw_params = tm2_aif2_hw_params,
204 .hw_free = tm2_aif2_hw_free,
205};
206
207static int tm2_hdmi_hw_params(struct snd_pcm_substream *substream,
208 struct snd_pcm_hw_params *params)
209{
210 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
211 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
212 unsigned int bfs;
213 int bitwidth, ret;
214
215 bitwidth = snd_pcm_format_width(params_format(params));
216 if (bitwidth < 0) {
217 dev_err(rtd->card->dev, "Invalid bit-width: %d\n", bitwidth);
218 return bitwidth;
219 }
220
221 switch (bitwidth) {
222 case 48:
223 bfs = 64;
224 break;
225 case 16:
226 bfs = 32;
227 break;
228 default:
229 dev_err(rtd->card->dev, "Unsupported bit-width: %d\n", bitwidth);
230 return -EINVAL;
231 }
232
233 switch (params_rate(params)) {
234 case 48000:
235 case 96000:
236 case 192000:
237 break;
238 default:
239 dev_err(rtd->card->dev, "Unsupported sample rate: %d\n",
240 params_rate(params));
241 return -EINVAL;
242 }
243
244 ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_OPCLK,
245 0, SAMSUNG_I2S_OPCLK_PCLK);
246 if (ret < 0)
247 return ret;
248
249 ret = snd_soc_dai_set_clkdiv(cpu_dai, SAMSUNG_I2S_DIV_BCLK, bfs);
250 if (ret < 0)
251 return ret;
252
253 return 0;
254}
255
256static const struct snd_soc_ops tm2_hdmi_ops = {
257 .hw_params = tm2_hdmi_hw_params,
258};
259
260static int tm2_mic_bias(struct snd_soc_dapm_widget *w,
261 struct snd_kcontrol *kcontrol, int event)
262{
263 struct snd_soc_card *card = w->dapm->card;
264 struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(card);
265
266 switch (event) {
267 case SND_SOC_DAPM_PRE_PMU:
268 gpiod_set_value_cansleep(priv->gpio_mic_bias, 1);
269 break;
270 case SND_SOC_DAPM_POST_PMD:
271 gpiod_set_value_cansleep(priv->gpio_mic_bias, 0);
272 break;
273 }
274
275 return 0;
276}
277
278static int tm2_set_bias_level(struct snd_soc_card *card,
279 struct snd_soc_dapm_context *dapm,
280 enum snd_soc_bias_level level)
281{
282 struct snd_soc_pcm_runtime *rtd;
283
284 rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
285
286 if (dapm->dev != snd_soc_rtd_to_codec(rtd, 0)->dev)
287 return 0;
288
289 switch (level) {
290 case SND_SOC_BIAS_STANDBY:
291 if (card->dapm.bias_level == SND_SOC_BIAS_OFF)
292 tm2_start_sysclk(card);
293 break;
294 case SND_SOC_BIAS_OFF:
295 tm2_stop_sysclk(card);
296 break;
297 default:
298 break;
299 }
300
301 return 0;
302}
303
304static struct snd_soc_aux_dev tm2_speaker_amp_dev;
305
306static int tm2_late_probe(struct snd_soc_card *card)
307{
308 struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(card);
309 unsigned int ch_map[] = { 0, 1 };
310 struct snd_soc_dai *amp_pdm_dai;
311 struct snd_soc_pcm_runtime *rtd;
312 struct snd_soc_dai *aif1_dai;
313 struct snd_soc_dai *aif2_dai;
314 int ret;
315
316 rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[TM2_DAI_AIF1]);
317 aif1_dai = snd_soc_rtd_to_codec(rtd, 0);
318 priv->component = snd_soc_rtd_to_codec(rtd, 0)->component;
319
320 ret = snd_soc_dai_set_sysclk(aif1_dai, ARIZONA_CLK_SYSCLK, 0, 0);
321 if (ret < 0) {
322 dev_err(aif1_dai->dev, "Failed to set SYSCLK: %d\n", ret);
323 return ret;
324 }
325
326 rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[TM2_DAI_AIF2]);
327 aif2_dai = snd_soc_rtd_to_codec(rtd, 0);
328
329 ret = snd_soc_dai_set_sysclk(aif2_dai, ARIZONA_CLK_ASYNCCLK, 0, 0);
330 if (ret < 0) {
331 dev_err(aif2_dai->dev, "Failed to set ASYNCCLK: %d\n", ret);
332 return ret;
333 }
334
335 amp_pdm_dai = snd_soc_find_dai(&tm2_speaker_amp_dev.dlc);
336 if (!amp_pdm_dai)
337 return -ENODEV;
338
339
340 ret = snd_soc_dai_set_channel_map(amp_pdm_dai, ARRAY_SIZE(ch_map),
341 ch_map, 0, NULL);
342 if (ret < 0)
343 return ret;
344
345 ret = snd_soc_dai_set_tdm_slot(amp_pdm_dai, 0x3, 0x0, 2, 16);
346 if (ret < 0)
347 return ret;
348
349 return 0;
350}
351
352static const struct snd_kcontrol_new tm2_controls[] = {
353 SOC_DAPM_PIN_SWITCH("HP"),
354 SOC_DAPM_PIN_SWITCH("SPK"),
355 SOC_DAPM_PIN_SWITCH("RCV"),
356 SOC_DAPM_PIN_SWITCH("VPS"),
357 SOC_DAPM_PIN_SWITCH("HDMI"),
358
359 SOC_DAPM_PIN_SWITCH("Main Mic"),
360 SOC_DAPM_PIN_SWITCH("Sub Mic"),
361 SOC_DAPM_PIN_SWITCH("Third Mic"),
362
363 SOC_DAPM_PIN_SWITCH("Headset Mic"),
364};
365
366static const struct snd_soc_dapm_widget tm2_dapm_widgets[] = {
367 SND_SOC_DAPM_HP("HP", NULL),
368 SND_SOC_DAPM_SPK("SPK", NULL),
369 SND_SOC_DAPM_SPK("RCV", NULL),
370 SND_SOC_DAPM_LINE("VPS", NULL),
371 SND_SOC_DAPM_LINE("HDMI", NULL),
372
373 SND_SOC_DAPM_MIC("Main Mic", tm2_mic_bias),
374 SND_SOC_DAPM_MIC("Sub Mic", NULL),
375 SND_SOC_DAPM_MIC("Third Mic", NULL),
376
377 SND_SOC_DAPM_MIC("Headset Mic", NULL),
378};
379
380static const struct snd_soc_component_driver tm2_component = {
381 .name = "tm2-audio",
382};
383
384static struct snd_soc_dai_driver tm2_ext_dai[] = {
385 {
386 .name = "Voice call",
387 .playback = {
388 .channels_min = 1,
389 .channels_max = 4,
390 .rate_min = 8000,
391 .rate_max = 48000,
392 .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |
393 SNDRV_PCM_RATE_48000),
394 .formats = SNDRV_PCM_FMTBIT_S16_LE,
395 },
396 .capture = {
397 .channels_min = 1,
398 .channels_max = 4,
399 .rate_min = 8000,
400 .rate_max = 48000,
401 .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |
402 SNDRV_PCM_RATE_48000),
403 .formats = SNDRV_PCM_FMTBIT_S16_LE,
404 },
405 },
406 {
407 .name = "Bluetooth",
408 .playback = {
409 .channels_min = 1,
410 .channels_max = 4,
411 .rate_min = 8000,
412 .rate_max = 16000,
413 .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000),
414 .formats = SNDRV_PCM_FMTBIT_S16_LE,
415 },
416 .capture = {
417 .channels_min = 1,
418 .channels_max = 2,
419 .rate_min = 8000,
420 .rate_max = 16000,
421 .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000),
422 .formats = SNDRV_PCM_FMTBIT_S16_LE,
423 },
424 },
425};
426
427SND_SOC_DAILINK_DEFS(aif1,
428 DAILINK_COMP_ARRAY(COMP_CPU(SAMSUNG_I2S_DAI)),
429 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm5110-aif1")),
430 DAILINK_COMP_ARRAY(COMP_EMPTY()));
431
432SND_SOC_DAILINK_DEFS(voice,
433 DAILINK_COMP_ARRAY(COMP_CPU(SAMSUNG_I2S_DAI)),
434 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm5110-aif2")),
435 DAILINK_COMP_ARRAY(COMP_EMPTY()));
436
437SND_SOC_DAILINK_DEFS(bt,
438 DAILINK_COMP_ARRAY(COMP_CPU(SAMSUNG_I2S_DAI)),
439 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm5110-aif3")),
440 DAILINK_COMP_ARRAY(COMP_EMPTY()));
441
442SND_SOC_DAILINK_DEFS(hdmi,
443 DAILINK_COMP_ARRAY(COMP_EMPTY()),
444 DAILINK_COMP_ARRAY(COMP_EMPTY()),
445 DAILINK_COMP_ARRAY(COMP_EMPTY()));
446
447static struct snd_soc_dai_link tm2_dai_links[] = {
448 {
449 .name = "WM5110 AIF1",
450 .stream_name = "HiFi Primary",
451 .ops = &tm2_aif1_ops,
452 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
453 SND_SOC_DAIFMT_CBP_CFP,
454 SND_SOC_DAILINK_REG(aif1),
455 }, {
456 .name = "WM5110 Voice",
457 .stream_name = "Voice call",
458 .ops = &tm2_aif2_ops,
459 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
460 SND_SOC_DAIFMT_CBP_CFP,
461 .ignore_suspend = 1,
462 SND_SOC_DAILINK_REG(voice),
463 }, {
464 .name = "WM5110 BT",
465 .stream_name = "Bluetooth",
466 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
467 SND_SOC_DAIFMT_CBP_CFP,
468 .ignore_suspend = 1,
469 SND_SOC_DAILINK_REG(bt),
470 }, {
471 .name = "HDMI",
472 .stream_name = "i2s1",
473 .ops = &tm2_hdmi_ops,
474 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
475 SND_SOC_DAIFMT_CBC_CFC,
476 SND_SOC_DAILINK_REG(hdmi),
477 }
478};
479
480static struct snd_soc_card tm2_card = {
481 .owner = THIS_MODULE,
482
483 .dai_link = tm2_dai_links,
484 .controls = tm2_controls,
485 .num_controls = ARRAY_SIZE(tm2_controls),
486 .dapm_widgets = tm2_dapm_widgets,
487 .num_dapm_widgets = ARRAY_SIZE(tm2_dapm_widgets),
488 .aux_dev = &tm2_speaker_amp_dev,
489 .num_aux_devs = 1,
490
491 .late_probe = tm2_late_probe,
492 .set_bias_level = tm2_set_bias_level,
493};
494
495static int tm2_probe(struct platform_device *pdev)
496{
497 struct device_node *cpu_dai_node[2] = {};
498 struct device_node *codec_dai_node[2] = {};
499 const char *cells_name = NULL;
500 struct device *dev = &pdev->dev;
501 struct snd_soc_card *card = &tm2_card;
502 struct tm2_machine_priv *priv;
503 struct snd_soc_dai_link *dai_link;
504 int num_codecs, ret, i;
505
506 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
507 if (!priv)
508 return -ENOMEM;
509
510 snd_soc_card_set_drvdata(card, priv);
511 card->dev = dev;
512
513 priv->gpio_mic_bias = devm_gpiod_get(dev, "mic-bias", GPIOD_OUT_HIGH);
514 if (IS_ERR(priv->gpio_mic_bias)) {
515 dev_err(dev, "Failed to get mic bias gpio\n");
516 return PTR_ERR(priv->gpio_mic_bias);
517 }
518
519 ret = snd_soc_of_parse_card_name(card, "model");
520 if (ret < 0) {
521 dev_err(dev, "Card name is not specified\n");
522 return ret;
523 }
524
525 ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
526 if (ret < 0) {
527
528 ret = snd_soc_of_parse_audio_routing(card, "samsung,audio-routing");
529 if (ret < 0) {
530 dev_err(dev, "Audio routing is not specified or invalid\n");
531 return ret;
532 }
533 }
534
535 card->aux_dev[0].dlc.of_node = of_parse_phandle(dev->of_node,
536 "audio-amplifier", 0);
537 if (!card->aux_dev[0].dlc.of_node) {
538 dev_err(dev, "audio-amplifier property invalid or missing\n");
539 return -EINVAL;
540 }
541
542 num_codecs = of_count_phandle_with_args(dev->of_node, "audio-codec",
543 NULL);
544
545
546 if (num_codecs > 1) {
547 card->num_links = ARRAY_SIZE(tm2_dai_links);
548 cells_name = "#sound-dai-cells";
549 } else {
550 card->num_links = ARRAY_SIZE(tm2_dai_links) - 1;
551 }
552
553 for (i = 0; i < num_codecs; i++) {
554 struct of_phandle_args args;
555
556 ret = of_parse_phandle_with_args(dev->of_node, "i2s-controller",
557 cells_name, i, &args);
558 if (ret) {
559 dev_err(dev, "i2s-controller property parse error: %d\n", i);
560 ret = -EINVAL;
561 goto dai_node_put;
562 }
563 cpu_dai_node[i] = args.np;
564
565 codec_dai_node[i] = of_parse_phandle(dev->of_node,
566 "audio-codec", i);
567 if (!codec_dai_node[i]) {
568 dev_err(dev, "audio-codec property parse error\n");
569 ret = -EINVAL;
570 goto dai_node_put;
571 }
572 }
573
574
575 for_each_card_prelinks(card, i, dai_link) {
576 unsigned int dai_index = 0;
577
578 dai_link->cpus->name = NULL;
579 dai_link->platforms->name = NULL;
580
581 if (num_codecs > 1 && i == card->num_links - 1)
582 dai_index = 1;
583
584 dai_link->codecs->of_node = codec_dai_node[dai_index];
585 dai_link->cpus->of_node = cpu_dai_node[dai_index];
586 dai_link->platforms->of_node = cpu_dai_node[dai_index];
587 }
588
589 if (num_codecs > 1) {
590 struct of_phandle_args args;
591
592
593 i = card->num_links - 1;
594
595 ret = of_parse_phandle_with_fixed_args(dev->of_node,
596 "audio-codec", 0, 1, &args);
597 if (ret) {
598 dev_err(dev, "audio-codec property parse error\n");
599 goto dai_node_put;
600 }
601
602 ret = snd_soc_get_dai_name(&args, &card->dai_link[i].codecs->dai_name);
603 if (ret) {
604 dev_err(dev, "Unable to get codec_dai_name\n");
605 goto dai_node_put;
606 }
607 }
608
609 ret = devm_snd_soc_register_component(dev, &tm2_component,
610 tm2_ext_dai, ARRAY_SIZE(tm2_ext_dai));
611 if (ret < 0) {
612 dev_err(dev, "Failed to register component: %d\n", ret);
613 goto dai_node_put;
614 }
615
616 ret = devm_snd_soc_register_card(dev, card);
617 if (ret < 0) {
618 dev_err_probe(dev, ret, "Failed to register card\n");
619 goto dai_node_put;
620 }
621
622dai_node_put:
623 for (i = 0; i < num_codecs; i++) {
624 of_node_put(codec_dai_node[i]);
625 of_node_put(cpu_dai_node[i]);
626 }
627
628 of_node_put(card->aux_dev[0].dlc.of_node);
629
630 return ret;
631}
632
633static int tm2_pm_prepare(struct device *dev)
634{
635 struct snd_soc_card *card = dev_get_drvdata(dev);
636
637 return tm2_stop_sysclk(card);
638}
639
640static void tm2_pm_complete(struct device *dev)
641{
642 struct snd_soc_card *card = dev_get_drvdata(dev);
643
644 tm2_start_sysclk(card);
645}
646
647static const struct dev_pm_ops tm2_pm_ops = {
648 .prepare = tm2_pm_prepare,
649 .suspend = snd_soc_suspend,
650 .resume = snd_soc_resume,
651 .complete = tm2_pm_complete,
652 .freeze = snd_soc_suspend,
653 .thaw = snd_soc_resume,
654 .poweroff = snd_soc_poweroff,
655 .restore = snd_soc_resume,
656};
657
658static const struct of_device_id tm2_of_match[] = {
659 { .compatible = "samsung,tm2-audio" },
660 { },
661};
662MODULE_DEVICE_TABLE(of, tm2_of_match);
663
664static struct platform_driver tm2_driver = {
665 .driver = {
666 .name = "tm2-audio",
667 .pm = &tm2_pm_ops,
668 .of_match_table = tm2_of_match,
669 },
670 .probe = tm2_probe,
671};
672module_platform_driver(tm2_driver);
673
674MODULE_AUTHOR("Inha Song <ideal.song@samsung.com>");
675MODULE_DESCRIPTION("ALSA SoC Exynos TM2 Audio Support");
676MODULE_LICENSE("GPL v2");
677
