Root/target/linux/xburst/files-2.6.32/sound/soc/codecs/jzcodec.c

1/*
2 * Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * You should have received a copy of the GNU General Public License along
9 * with this program; if not, write to the Free Software Foundation, Inc.,
10 * 675 Mass Ave, Cambridge, MA 02139, USA.
11 *
12 */
13
14#include <linux/kernel.h>
15#include <linux/module.h>
16#include <linux/platform_device.h>
17#include <linux/delay.h>
18
19#include <sound/core.h>
20#include <sound/pcm.h>
21#include <sound/pcm_params.h>
22#include <sound/initval.h>
23#include <sound/soc-dapm.h>
24#include <sound/soc.h>
25
26#define JZ_REG_CODEC_1 0x0
27#define JZ_REG_CODEC_2 0x1
28
29#define JZ_CODEC_1_LINE_ENABLE BIT(29)
30#define JZ_CODEC_1_MIC_ENABLE BIT(28)
31#define JZ_CODEC_1_SW1_ENABLE BIT(27)
32#define JZ_CODEC_1_ADC_ENABLE BIT(26)
33#define JZ_CODEC_1_SW2_ENABLE BIT(25)
34#define JZ_CODEC_1_DAC_ENABLE BIT(24)
35#define JZ_CODEC_1_VREF_DISABLE BIT(20)
36#define JZ_CODEC_1_VREF_AMP_DISABLE BIT(19)
37#define JZ_CODEC_1_VREF_PULL_DOWN BIT(18)
38#define JZ_CODEC_1_VREF_LOW_CURRENT BIT(17)
39#define JZ_CODEC_1_VREF_HIGH_CURRENT BIT(16)
40#define JZ_CODEC_1_HEADPHONE_DISABLE BIT(14)
41#define JZ_CODEC_1_HEADPHONE_AMP_CHANGE_ANY BIT(13)
42#define JZ_CODEC_1_HEADPHONE_CHANGE BIT(12)
43#define JZ_CODEC_1_HEADPHONE_PULL_DOWN_M BIT(11)
44#define JZ_CODEC_1_HEADPHONE_PULL_DOWN_R BIT(10)
45#define JZ_CODEC_1_HEADPHONE_POWER_DOWN_M BIT(9)
46#define JZ_CODEC_1_HEADPHONE_POWER_DOWN BIT(8)
47#define JZ_CODEC_1_SUSPEND BIT(1)
48#define JZ_CODEC_1_RESET BIT(0)
49
50#define JZ_CODEC_1_LINE_ENABLE_OFFSET 29
51#define JZ_CODEC_1_MIC_ENABLE_OFFSET 28
52#define JZ_CODEC_1_SW1_ENABLE_OFFSET 27
53#define JZ_CODEC_1_ADC_ENABLE_OFFSET 26
54#define JZ_CODEC_1_SW2_ENABLE_OFFSET 25
55#define JZ_CODEC_1_DAC_ENABLE_OFFSET 24
56#define JZ_CODEC_1_HEADPHONE_DISABLE_OFFSET 14
57#define JZ_CODEC_1_HEADPHONE_POWER_DOWN_OFFSET 8
58
59#define JZ_CODEC_2_INPUT_VOLUME_MASK 0x1f0000
60#define JZ_CODEC_2_SAMPLE_RATE_MASK 0x000f00
61#define JZ_CODEC_2_MIC_BOOST_GAIN_MASK 0x000030
62#define JZ_CODEC_2_HEADPHONE_VOLUME_MASK 0x000003
63
64#define JZ_CODEC_2_INPUT_VOLUME_OFFSET 16
65#define JZ_CODEC_2_SAMPLE_RATE_OFFSET 8
66#define JZ_CODEC_2_MIC_BOOST_GAIN_OFFSET 4
67#define JZ_CODEC_2_HEADPHONE_VOLUME_OFFSET 0
68
69struct jz_codec {
70    void __iomem *base;
71    struct resource *mem;
72
73    uint32_t reg_cache[2];
74    struct snd_soc_codec codec;
75};
76
77inline static struct jz_codec *codec_to_jz(struct snd_soc_codec *codec)
78{
79    return container_of(codec, struct jz_codec, codec);
80}
81
82static unsigned int jz_codec_read(struct snd_soc_codec *codec, unsigned int reg)
83{
84    struct jz_codec *jz_codec = codec_to_jz(codec);
85    return readl(jz_codec->base + (reg << 2));
86}
87
88static int jz_codec_write(struct snd_soc_codec *codec, unsigned int reg,
89unsigned int val)
90{
91    struct jz_codec *jz_codec = codec_to_jz(codec);
92    jz_codec->reg_cache[reg] = val;
93
94    writel(val, jz_codec->base + (reg << 2));
95    return 0;
96}
97
98static const struct snd_kcontrol_new jz_codec_controls[] = {
99    SOC_SINGLE("Master Playback Volume", JZ_REG_CODEC_2,
100            JZ_CODEC_2_HEADPHONE_VOLUME_OFFSET, 3, 0),
101    SOC_SINGLE("Capture Volume", JZ_REG_CODEC_2,
102            JZ_CODEC_2_INPUT_VOLUME_OFFSET, 31, 0),
103    SOC_SINGLE("Master Playback Switch", JZ_REG_CODEC_1,
104            JZ_CODEC_1_HEADPHONE_DISABLE_OFFSET, 1, 1),
105    SOC_SINGLE("Mic Capture Volume", JZ_REG_CODEC_2,
106            JZ_CODEC_2_MIC_BOOST_GAIN_OFFSET, 3, 0),
107};
108
109static const struct snd_kcontrol_new jz_codec_output_controls[] = {
110    SOC_DAPM_SINGLE("Bypass Switch", JZ_REG_CODEC_1,
111            JZ_CODEC_1_SW1_ENABLE_OFFSET, 1, 0),
112    SOC_DAPM_SINGLE("DAC Switch", JZ_REG_CODEC_1,
113            JZ_CODEC_1_SW2_ENABLE_OFFSET, 1, 0),
114};
115
116static const struct snd_kcontrol_new jz_codec_input_controls[] =
117{
118    SOC_DAPM_SINGLE("Line Capture Switch", JZ_REG_CODEC_1,
119            JZ_CODEC_1_LINE_ENABLE_OFFSET, 1, 0),
120    SOC_DAPM_SINGLE("Mic Capture Switch", JZ_REG_CODEC_1,
121            JZ_CODEC_1_MIC_ENABLE_OFFSET, 1, 0),
122};
123
124static const struct snd_soc_dapm_widget jz_codec_dapm_widgets[] = {
125    SND_SOC_DAPM_ADC("ADC", "Capture", JZ_REG_CODEC_1,
126            JZ_CODEC_1_ADC_ENABLE_OFFSET, 0),
127    SND_SOC_DAPM_DAC("DAC", "Playback", JZ_REG_CODEC_1,
128            JZ_CODEC_1_DAC_ENABLE_OFFSET, 0),
129
130    SND_SOC_DAPM_MIXER("Output Mixer", JZ_REG_CODEC_1,
131            JZ_CODEC_1_HEADPHONE_POWER_DOWN_OFFSET, 1,
132            jz_codec_output_controls,
133            ARRAY_SIZE(jz_codec_output_controls)),
134
135    SND_SOC_DAPM_MIXER_NAMED_CTL("Input Mixer", SND_SOC_NOPM, 0, 0,
136            jz_codec_input_controls,
137            ARRAY_SIZE(jz_codec_input_controls)),
138    SND_SOC_DAPM_MIXER("Line Input", SND_SOC_NOPM, 0, 0, NULL, 0),
139
140    SND_SOC_DAPM_OUTPUT("LOUT"),
141    SND_SOC_DAPM_OUTPUT("ROUT"),
142
143    SND_SOC_DAPM_INPUT("MIC"),
144    SND_SOC_DAPM_INPUT("LIN"),
145    SND_SOC_DAPM_INPUT("RIN"),
146};
147
148static const struct snd_soc_dapm_route jz_codec_dapm_routes[] = {
149
150    {"Line Input", NULL, "LIN"},
151    {"Line Input", NULL, "RIN"},
152
153    {"Input Mixer", "Line Capture Switch", "Line Input"},
154    {"Input Mixer", "Mic Capture Switch", "MIC"},
155
156    {"ADC", NULL, "Input Mixer"},
157
158    {"Output Mixer", "Bypass Switch", "Input Mixer"},
159    {"Output Mixer", "DAC Switch", "DAC"},
160
161    {"LOUT", NULL, "Output Mixer"},
162    {"ROUT", NULL, "Output Mixer"},
163};
164
165static int jz_codec_hw_params(struct snd_pcm_substream *substream, struct
166snd_pcm_hw_params *params, struct snd_soc_dai *dai)
167{
168    uint32_t val;
169    struct snd_soc_pcm_runtime *rtd = substream->private_data;
170    struct snd_soc_device *socdev = rtd->socdev;
171    struct snd_soc_codec *codec = socdev->card->codec;
172
173    switch (params_format(params)) {
174    case SNDRV_PCM_FORMAT_S8:
175    case SNDRV_PCM_FORMAT_S16_LE:
176    case SNDRV_PCM_FORMAT_S18_3LE:
177        break;
178    default:
179        return -EINVAL;
180        break;
181    }
182
183    switch (params_rate(params)) {
184    case 8000:
185        val = 0;
186        break;
187    case 11025:
188        val = 1;
189        break;
190    case 12000:
191        val = 2;
192        break;
193    case 16000:
194        val = 3;
195        break;
196    case 22050:
197        val = 4;
198        break;
199    case 24000:
200        val = 5;
201        break;
202    case 32000:
203        val = 6;
204        break;
205    case 44100:
206        val = 7;
207        break;
208    case 48000:
209        val = 8;
210        break;
211    default:
212        return -EINVAL;
213    }
214
215    val <<= JZ_CODEC_2_SAMPLE_RATE_OFFSET;
216
217    snd_soc_update_bits(codec, JZ_REG_CODEC_2,
218                JZ_CODEC_2_SAMPLE_RATE_MASK, val);
219
220    return 0;
221}
222
223static int jz_codec_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
224{
225    switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
226    case SND_SOC_DAIFMT_CBM_CFM:
227        break;
228    default:
229        return -EINVAL;
230    }
231
232    switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
233    case SND_SOC_DAIFMT_I2S:
234        break;
235    default:
236        return -EINVAL;
237    }
238
239    switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
240    case SND_SOC_DAIFMT_NB_NF:
241        break;
242    default:
243        return -EINVAL;
244    }
245
246    return 0;
247}
248
249static int jz_codec_set_sysclk(struct snd_soc_dai *codec_dai,
250        int clk_id, unsigned int freq, int dir)
251{
252    return 0;
253}
254
255
256static struct snd_soc_dai_ops jz_codec_dai_ops = {
257    .hw_params = jz_codec_hw_params,
258    .set_fmt = jz_codec_set_fmt,
259/* .set_clkdiv = jz_codec_set_clkdiv,*/
260    .set_sysclk = jz_codec_set_sysclk,
261};
262
263struct snd_soc_dai jz_codec_dai = {
264    .name = "jz-codec",
265    .playback = {
266        .stream_name = "Playback",
267        .channels_min = 2,
268        .channels_max = 2,
269        .rates = SNDRV_PCM_RATE_8000_44100,
270        .formats = SNDRV_PCM_FMTBIT_S16_LE,
271    },
272    .capture = {
273        .stream_name = "Capture",
274        .channels_min = 2,
275        .channels_max = 2,
276        .rates = SNDRV_PCM_RATE_8000_44100,
277        .formats = SNDRV_PCM_FMTBIT_S16_LE,
278    },
279    .ops = &jz_codec_dai_ops,
280    .symmetric_rates = 1,
281};
282EXPORT_SYMBOL_GPL(jz_codec_dai);
283
284static int jz_codec_set_bias_level(struct snd_soc_codec *codec,
285                enum snd_soc_bias_level level)
286{
287
288    if (codec->bias_level == SND_SOC_BIAS_OFF && level != SND_SOC_BIAS_OFF) {
289        snd_soc_update_bits(codec, JZ_REG_CODEC_1,
290                JZ_CODEC_1_RESET, JZ_CODEC_1_RESET);
291        udelay(2);
292
293        snd_soc_update_bits(codec, JZ_REG_CODEC_1,
294                    JZ_CODEC_1_SUSPEND | JZ_CODEC_1_RESET, 0);
295    }
296    switch (level) {
297    case SND_SOC_BIAS_ON:
298        snd_soc_update_bits(codec, JZ_REG_CODEC_1,
299                    JZ_CODEC_1_VREF_DISABLE | JZ_CODEC_1_VREF_AMP_DISABLE |
300                    JZ_CODEC_1_HEADPHONE_POWER_DOWN_M |
301                    JZ_CODEC_1_VREF_LOW_CURRENT | JZ_CODEC_1_VREF_HIGH_CURRENT,
302                0);
303        break;
304    case SND_SOC_BIAS_PREPARE:
305        snd_soc_update_bits(codec, JZ_REG_CODEC_1,
306                    JZ_CODEC_1_VREF_LOW_CURRENT | JZ_CODEC_1_VREF_HIGH_CURRENT,
307                    JZ_CODEC_1_VREF_LOW_CURRENT | JZ_CODEC_1_VREF_HIGH_CURRENT);
308        break;
309    case SND_SOC_BIAS_STANDBY:
310        snd_soc_update_bits(codec, JZ_REG_CODEC_1,
311                    JZ_CODEC_1_VREF_DISABLE | JZ_CODEC_1_VREF_AMP_DISABLE,
312                    JZ_CODEC_1_VREF_DISABLE | JZ_CODEC_1_VREF_AMP_DISABLE);
313        break;
314    case SND_SOC_BIAS_OFF:
315        snd_soc_update_bits(codec, JZ_REG_CODEC_1,
316                    JZ_CODEC_1_SUSPEND, JZ_CODEC_1_SUSPEND);
317        break;
318    }
319    codec->bias_level = level;
320
321    return 0;
322}
323
324
325static struct snd_soc_codec *jz_codec_codec;
326
327static int jz_codec_dev_probe(struct platform_device *pdev)
328{
329    int ret;
330    struct snd_soc_device *socdev = platform_get_drvdata(pdev);
331    struct snd_soc_codec *codec = jz_codec_codec;
332
333    BUG_ON(!codec);
334
335    socdev->card->codec = codec;
336
337    ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
338    if (ret) {
339        dev_err(&pdev->dev, "Failed to create pcms: %d\n", ret);
340        goto err;
341    }
342    snd_soc_add_controls(codec, jz_codec_controls,
343    ARRAY_SIZE(jz_codec_controls));
344
345    snd_soc_dapm_new_controls(codec, jz_codec_dapm_widgets,
346    ARRAY_SIZE(jz_codec_dapm_widgets));
347
348    snd_soc_dapm_add_routes(codec, jz_codec_dapm_routes,
349    ARRAY_SIZE(jz_codec_dapm_routes));
350
351    snd_soc_dapm_new_widgets(codec);
352
353    ret = snd_soc_init_card(socdev);
354
355    if (ret) {
356        dev_err(&pdev->dev, "Failed to register card\n");
357        goto err;
358    }
359
360    return 0;
361
362err:
363    snd_soc_free_pcms(socdev);
364    snd_soc_dapm_free(socdev);
365
366    return ret;
367}
368
369static int jz_codec_dev_remove(struct platform_device *pdev)
370{
371    struct snd_soc_device *socdev = platform_get_drvdata(pdev);
372    snd_soc_free_pcms(socdev);
373    snd_soc_dapm_free(socdev);
374
375    return 0;
376}
377
378struct snd_soc_codec_device soc_codec_dev_jzcodec = {
379    .probe = jz_codec_dev_probe,
380    .remove = jz_codec_dev_remove,
381};
382EXPORT_SYMBOL_GPL(soc_codec_dev_jzcodec);
383
384static int __devinit jz_codec_probe(struct platform_device *pdev)
385{
386    int ret;
387    struct jz_codec *jz_codec;
388    struct snd_soc_codec *codec;
389
390    jz_codec = kzalloc(sizeof(*jz_codec), GFP_KERNEL);
391
392    if (!jz_codec)
393        return -ENOMEM;
394
395    jz_codec->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
396
397    if (!jz_codec->mem) {
398        dev_err(&pdev->dev, "Failed to get mmio memory resource\n");
399        ret = -ENOENT;
400        goto err_free_jz_codec;
401    }
402
403    jz_codec->mem = request_mem_region(jz_codec->mem->start,
404                resource_size(jz_codec->mem), pdev->name);
405
406    if (!jz_codec->mem) {
407        dev_err(&pdev->dev, "Failed to request mmio memory region\n");
408        ret = -EBUSY;
409        goto err_free_jz_codec;
410    }
411
412    jz_codec->base = ioremap(jz_codec->mem->start, resource_size(jz_codec->mem));
413
414    if (!jz_codec->base) {
415        dev_err(&pdev->dev, "Failed to ioremap mmio memory\n");
416        ret = -EBUSY;
417        goto err_release_mem_region;
418    }
419
420    jz_codec_dai.dev = &pdev->dev;
421
422    codec = &jz_codec->codec;
423
424    codec->dev = &pdev->dev;
425    codec->name = "jz-codec";
426    codec->owner = THIS_MODULE;
427
428    codec->read = jz_codec_read;
429    codec->write = jz_codec_write;
430    codec->set_bias_level = jz_codec_set_bias_level;
431    codec->bias_level = SND_SOC_BIAS_OFF;
432
433    codec->dai = &jz_codec_dai;
434    codec->num_dai = 1;
435
436    codec->reg_cache = jz_codec->reg_cache;
437    codec->reg_cache_size = 2;
438
439    codec->private_data = jz_codec;
440
441    mutex_init(&codec->mutex);
442    INIT_LIST_HEAD(&codec->dapm_widgets);
443    INIT_LIST_HEAD(&codec->dapm_paths);
444
445    jz_codec_codec = codec;
446
447    snd_soc_update_bits(codec, JZ_REG_CODEC_1,
448                JZ_CODEC_1_SW2_ENABLE, JZ_CODEC_1_SW2_ENABLE);
449
450
451    platform_set_drvdata(pdev, jz_codec);
452    ret = snd_soc_register_codec(codec);
453
454    if (ret) {
455        dev_err(&pdev->dev, "Failed to register codec\n");
456        goto err_iounmap;
457    }
458
459    ret = snd_soc_register_dai(&jz_codec_dai);
460    if (ret) {
461        dev_err(&pdev->dev, "Failed to register codec dai\n");
462        goto err_unregister_codec;
463    }
464
465    jz_codec_set_bias_level (codec, SND_SOC_BIAS_STANDBY);
466
467    return 0;
468err_unregister_codec:
469    snd_soc_unregister_codec(codec);
470err_iounmap:
471    iounmap(jz_codec->base);
472err_release_mem_region:
473    release_mem_region(jz_codec->mem->start, resource_size(jz_codec->mem));
474err_free_jz_codec:
475    kfree(jz_codec);
476
477    return ret;
478}
479
480static int __devexit jz_codec_remove(struct platform_device *pdev)
481{
482    struct jz_codec *jz_codec = platform_get_drvdata(pdev);
483
484    snd_soc_unregister_dai(&jz_codec_dai);
485    snd_soc_unregister_codec(&jz_codec->codec);
486
487    iounmap(jz_codec->base);
488    release_mem_region(jz_codec->mem->start, resource_size(jz_codec->mem));
489
490    platform_set_drvdata(pdev, NULL);
491    kfree(jz_codec);
492
493    return 0;
494}
495
496static struct platform_driver jz_codec_driver = {
497    .probe = jz_codec_probe,
498    .remove = __devexit_p(jz_codec_remove),
499    .driver = {
500        .name = "jz4740-codec",
501        .owner = THIS_MODULE,
502    },
503};
504
505static int __init jz_codec_init(void)
506{
507    return platform_driver_register(&jz_codec_driver);
508}
509module_init(jz_codec_init);
510
511static void __exit jz_codec_exit(void)
512{
513    platform_driver_unregister(&jz_codec_driver);
514}
515module_exit(jz_codec_exit);
516
517MODULE_DESCRIPTION("JZ4720/JZ4740 SoC internal codec driver");
518MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
519MODULE_LICENSE("GPL v2");
520MODULE_ALIAS("platform:jz-codec");
521

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