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1 | /* |
2 | * sound/soc/samsung/smdk_wm8994pcm.c | |
3 | * | |
4 | * Copyright (c) 2011 Samsung Electronics Co., Ltd | |
5 | * http://www.samsung.com | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | */ | |
da155d5b | 12 | #include <linux/module.h> |
d2ec3aba SK |
13 | #include <sound/soc.h> |
14 | #include <sound/pcm.h> | |
15 | #include <sound/pcm_params.h> | |
16 | ||
17 | #include "../codecs/wm8994.h" | |
18 | #include "dma.h" | |
19 | #include "pcm.h" | |
20 | ||
21 | /* | |
22 | * Board Settings: | |
23 | * o '1' means 'ON' | |
24 | * o '0' means 'OFF' | |
25 | * o 'X' means 'Don't care' | |
26 | * | |
27 | * SMDKC210, SMDKV310: CFG3- 1001, CFG5-1000, CFG7-111111 | |
28 | */ | |
29 | ||
30 | /* | |
31 | * Configure audio route as :- | |
32 | * $ amixer sset 'DAC1' on,on | |
33 | * $ amixer sset 'Right Headphone Mux' 'DAC' | |
34 | * $ amixer sset 'Left Headphone Mux' 'DAC' | |
35 | * $ amixer sset 'DAC1R Mixer AIF1.1' on | |
36 | * $ amixer sset 'DAC1L Mixer AIF1.1' on | |
37 | * $ amixer sset 'IN2L' on | |
38 | * $ amixer sset 'IN2L PGA IN2LN' on | |
39 | * $ amixer sset 'MIXINL IN2L' on | |
40 | * $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on | |
41 | * $ amixer sset 'IN2R' on | |
42 | * $ amixer sset 'IN2R PGA IN2RN' on | |
43 | * $ amixer sset 'MIXINR IN2R' on | |
44 | * $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on | |
45 | */ | |
46 | ||
47 | /* SMDK has a 16.9344MHZ crystal attached to WM8994 */ | |
48 | #define SMDK_WM8994_FREQ 16934400 | |
49 | ||
50 | static int smdk_wm8994_pcm_hw_params(struct snd_pcm_substream *substream, | |
51 | struct snd_pcm_hw_params *params) | |
52 | { | |
53 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
54 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
55 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
56 | unsigned long mclk_freq; | |
57 | int rfs, ret; | |
58 | ||
59 | switch(params_rate(params)) { | |
60 | case 8000: | |
61 | rfs = 512; | |
62 | break; | |
63 | default: | |
64 | dev_err(cpu_dai->dev, "%s:%d Sampling Rate %u not supported!\n", | |
65 | __func__, __LINE__, params_rate(params)); | |
66 | return -EINVAL; | |
67 | } | |
68 | ||
69 | mclk_freq = params_rate(params) * rfs; | |
70 | ||
71 | /* Set the codec DAI configuration */ | |
72 | ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B | |
73 | | SND_SOC_DAIFMT_IB_NF | |
74 | | SND_SOC_DAIFMT_CBS_CFS); | |
75 | if (ret < 0) | |
76 | return ret; | |
77 | ||
78 | /* Set the cpu DAI configuration */ | |
79 | ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_B | |
80 | | SND_SOC_DAIFMT_IB_NF | |
81 | | SND_SOC_DAIFMT_CBS_CFS); | |
82 | if (ret < 0) | |
83 | return ret; | |
84 | ||
85 | ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1, | |
86 | mclk_freq, SND_SOC_CLOCK_IN); | |
87 | if (ret < 0) | |
88 | return ret; | |
89 | ||
90 | ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1, | |
91 | SMDK_WM8994_FREQ, mclk_freq); | |
92 | if (ret < 0) | |
93 | return ret; | |
94 | ||
95 | /* Set PCM source clock on CPU */ | |
96 | ret = snd_soc_dai_set_sysclk(cpu_dai, S3C_PCM_CLKSRC_MUX, | |
97 | mclk_freq, SND_SOC_CLOCK_IN); | |
98 | if (ret < 0) | |
99 | return ret; | |
100 | ||
101 | /* Set SCLK_DIV for making bclk */ | |
102 | ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_PCM_SCLK_PER_FS, rfs); | |
103 | if (ret < 0) | |
104 | return ret; | |
105 | ||
106 | return 0; | |
107 | } | |
108 | ||
109 | static struct snd_soc_ops smdk_wm8994_pcm_ops = { | |
110 | .hw_params = smdk_wm8994_pcm_hw_params, | |
111 | }; | |
112 | ||
113 | static struct snd_soc_dai_link smdk_dai[] = { | |
114 | { | |
115 | .name = "WM8994 PAIF PCM", | |
116 | .stream_name = "Primary PCM", | |
117 | .cpu_dai_name = "samsung-pcm.0", | |
118 | .codec_dai_name = "wm8994-aif1", | |
119 | .platform_name = "samsung-audio", | |
120 | .codec_name = "wm8994-codec", | |
121 | .ops = &smdk_wm8994_pcm_ops, | |
122 | }, | |
123 | }; | |
124 | ||
125 | static struct snd_soc_card smdk_pcm = { | |
126 | .name = "SMDK-PCM", | |
095d79dc | 127 | .owner = THIS_MODULE, |
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128 | .dai_link = smdk_dai, |
129 | .num_links = 1, | |
130 | }; | |
131 | ||
132 | static int __devinit snd_smdk_probe(struct platform_device *pdev) | |
133 | { | |
134 | int ret = 0; | |
135 | ||
136 | smdk_pcm.dev = &pdev->dev; | |
137 | ret = snd_soc_register_card(&smdk_pcm); | |
138 | if (ret) { | |
139 | dev_err(&pdev->dev, "snd_soc_register_card failed %d\n", ret); | |
140 | return ret; | |
141 | } | |
142 | ||
143 | return 0; | |
144 | } | |
145 | ||
146 | static int __devexit snd_smdk_remove(struct platform_device *pdev) | |
147 | { | |
148 | snd_soc_unregister_card(&smdk_pcm); | |
149 | platform_set_drvdata(pdev, NULL); | |
150 | return 0; | |
151 | } | |
152 | ||
153 | static struct platform_driver snd_smdk_driver = { | |
154 | .driver = { | |
155 | .owner = THIS_MODULE, | |
156 | .name = "samsung-smdk-pcm", | |
157 | }, | |
158 | .probe = snd_smdk_probe, | |
159 | .remove = __devexit_p(snd_smdk_remove), | |
160 | }; | |
161 | ||
1175f711 | 162 | module_platform_driver(snd_smdk_driver); |
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163 | |
164 | MODULE_AUTHOR("Sangbeom Kim, <sbkim73@samsung.com>"); | |
165 | MODULE_DESCRIPTION("ALSA SoC SMDK WM8994 for PCM"); | |
166 | MODULE_LICENSE("GPL"); |