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review.evervolv.com / android_kernel_htc_msm8960 / 05d42746b51a1ffca1b42f31524b69ce6654d1e5 / . / sound / soc / msm / lpass-i2s.c
blob: 9583c52c9a6eb6237bab38d1083872c5bcfd906b [file] [log] [blame]
Bryan Huntsman3f2bc4d2011-08-16 17:27:22 -0700[diff] [blame]1/* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
2 *
3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License version 2 and
5 * only version 2 as published by the Free Software Foundation.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
11 */
12
13
14#include <linux/init.h>
15#include <linux/module.h>
16#include <linux/device.h>
17#include <linux/delay.h>
18#include <linux/clk.h>
19#include <linux/platform_device.h>
20#include <sound/core.h>
21#include <sound/pcm.h>
22#include <sound/initval.h>
23#include <sound/soc.h>
24#include <sound/dai.h>
25
26static int msm_cpu_dai_startup(struct snd_pcm_substream *substream,
27 struct snd_soc_dai *dai)
28{
29 uint32_t dma_ch = dai->id;
30 int ret = 0;
31
32 pr_debug("%s\n", __func__);
33 ret = dai_open(dma_ch);
34 return ret;
35
36}
37
38static void msm_cpu_dai_shutdown(struct snd_pcm_substream *substream,
39 struct snd_soc_dai *dai)
40{
41 uint32_t dma_ch = dai->id;
42
43 pr_debug("%s\n", __func__);
44 dai_close(dma_ch);
45}
46
47static int msm_cpu_dai_trigger(struct snd_pcm_substream *substream, int cmd,
48 struct snd_soc_dai *dai)
49{
50 pr_debug("%s\n", __func__);
51 return 0;
52}
53
54static int msm_cpu_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
55{
56 uint32_t dma_ch = dai->id;
57
58 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
59 case SND_SOC_DAIFMT_CBS_CFS:
60 dai_set_master_mode(dma_ch, 1); /* CPU is master */
61 break;
62 case SND_SOC_DAIFMT_CBM_CFM:
63 dai_set_master_mode(dma_ch, 0); /* CPU is slave */
64 break;
65 default:
66 return -EINVAL;
67 }
68
69 return 0;
70}
71
72static struct snd_soc_dai_ops msm_cpu_dai_ops = {
73 .startup = msm_cpu_dai_startup,
74 .shutdown = msm_cpu_dai_shutdown,
75 .trigger = msm_cpu_dai_trigger,
76 .set_fmt = msm_cpu_dai_fmt,
77
78};
79
80
81#define MSM_DAI_SPEAKER_BUILDER(link_id) \
82{ \
83 .name = "msm-speaker-dai-"#link_id, \
84 .id = (link_id), \
85 .playback = { \
86 .rates = SNDRV_PCM_RATE_8000_96000, \
87 .formats = SNDRV_PCM_FMTBIT_S16_LE, \
88 .channels_min = 1, \
89 .channels_max = 2, \
90 .rate_max = 96000, \
91 .rate_min = 8000, \
92 }, \
93 .ops = &msm_cpu_dai_ops, \
94}
95
96
97#define MSM_DAI_MIC_BUILDER(link_id) \
98{ \
99 .name = "msm-mic-dai-"#link_id, \
100 .id = (link_id), \
101 .capture = { \
102 .rates = SNDRV_PCM_RATE_8000_96000, \
103 .formats = SNDRV_PCM_FMTBIT_S16_LE, \
104 .rate_min = 8000, \
105 .rate_max = 96000, \
106 .channels_min = 1, \
107 .channels_max = 2, \
108 }, \
109 .ops = &msm_cpu_dai_ops, \
110}
111
112
113struct snd_soc_dai msm_cpu_dai[] = {
114 MSM_DAI_SPEAKER_BUILDER(0),
115 MSM_DAI_SPEAKER_BUILDER(1),
116 MSM_DAI_SPEAKER_BUILDER(2),
117 MSM_DAI_SPEAKER_BUILDER(3),
118 MSM_DAI_SPEAKER_BUILDER(4),
119 MSM_DAI_MIC_BUILDER(5),
120 MSM_DAI_MIC_BUILDER(6),
121 MSM_DAI_MIC_BUILDER(7),
122};
123EXPORT_SYMBOL_GPL(msm_cpu_dai);
124
125static int __init msm_cpu_dai_init(void)
126{
127 return snd_soc_register_dais(msm_cpu_dai, ARRAY_SIZE(msm_cpu_dai));
128}
129module_init(msm_cpu_dai_init);
130
131static void __exit msm_cpu_dai_exit(void)
132{
133 snd_soc_unregister_dais(msm_cpu_dai, ARRAY_SIZE(msm_cpu_dai));
134}
135module_exit(msm_cpu_dai_exit);
136
137/* Module information */
138MODULE_DESCRIPTION("MSM CPU DAI driver");
139MODULE_LICENSE("GPL v2");