1
2
3
4
5
6#include <linux/module.h>
7#include <sound/soc.h>
8#include <sound/pcm_params.h>
9
10#include "../codecs/wm8580.h"
11#include "i2s.h"
12
13
14
15
16
17
18
19
20#define SMDK_WM8580_FREQ 12000000
21
22static int smdk_hw_params(struct snd_pcm_substream *substream,
23 struct snd_pcm_hw_params *params)
24{
25 struct snd_soc_pcm_runtime *rtd = substream->private_data;
26 struct snd_soc_dai *codec_dai = rtd->codec_dai;
27 unsigned int pll_out;
28 int rfs, ret;
29
30 switch (params_width(params)) {
31 case 8:
32 case 16:
33 break;
34 default:
35 return -EINVAL;
36 }
37
38
39
40
41
42
43
44
45 switch (params_rate(params)) {
46 case 16000:
47 case 22050:
48 case 32000:
49 case 44100:
50 case 48000:
51 case 88200:
52 case 96000:
53 rfs = 256;
54 break;
55 case 64000:
56 rfs = 384;
57 break;
58 case 8000:
59 case 11025:
60 rfs = 512;
61 break;
62 default:
63 return -EINVAL;
64 }
65 pll_out = params_rate(params) * rfs;
66
67
68 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK,
69 WM8580_CLKSRC_PLLA);
70 if (ret < 0)
71 return ret;
72
73 ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0,
74 SMDK_WM8580_FREQ, pll_out);
75 if (ret < 0)
76 return ret;
77
78 ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_PLLA,
79 pll_out, SND_SOC_CLOCK_IN);
80 if (ret < 0)
81 return ret;
82
83 return 0;
84}
85
86
87
88
89static struct snd_soc_ops smdk_ops = {
90 .hw_params = smdk_hw_params,
91};
92
93
94static const struct snd_soc_dapm_widget smdk_wm8580_dapm_widgets[] = {
95 SND_SOC_DAPM_HP("Front", NULL),
96 SND_SOC_DAPM_HP("Center+Sub", NULL),
97 SND_SOC_DAPM_HP("Rear", NULL),
98
99 SND_SOC_DAPM_MIC("MicIn", NULL),
100 SND_SOC_DAPM_LINE("LineIn", NULL),
101};
102
103
104static const struct snd_soc_dapm_route smdk_wm8580_audio_map[] = {
105
106 {"AINL", NULL, "MicIn"},
107
108
109 {"AINL", NULL, "LineIn"},
110 {"AINR", NULL, "LineIn"},
111
112
113 {"Front", NULL, "VOUT1L"},
114 {"Front", NULL, "VOUT1R"},
115
116
117 {"Center+Sub", NULL, "VOUT2L"},
118 {"Center+Sub", NULL, "VOUT2R"},
119
120
121 {"Rear", NULL, "VOUT3L"},
122 {"Rear", NULL, "VOUT3R"},
123};
124
125static int smdk_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd)
126{
127
128
129
130 snd_soc_dapm_disable_pin(&rtd->card->dapm, "MicIn");
131
132 return 0;
133}
134
135enum {
136 PRI_PLAYBACK = 0,
137 PRI_CAPTURE,
138};
139
140#define SMDK_DAI_FMT (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | \
141 SND_SOC_DAIFMT_CBM_CFM)
142
143static struct snd_soc_dai_link smdk_dai[] = {
144 [PRI_PLAYBACK] = {
145 .name = "WM8580 PAIF RX",
146 .stream_name = "Playback",
147 .cpu_dai_name = "samsung-i2s.2",
148 .codec_dai_name = "wm8580-hifi-playback",
149 .platform_name = "samsung-i2s.0",
150 .codec_name = "wm8580.0-001b",
151 .dai_fmt = SMDK_DAI_FMT,
152 .ops = &smdk_ops,
153 },
154 [PRI_CAPTURE] = {
155 .name = "WM8580 PAIF TX",
156 .stream_name = "Capture",
157 .cpu_dai_name = "samsung-i2s.2",
158 .codec_dai_name = "wm8580-hifi-capture",
159 .platform_name = "samsung-i2s.0",
160 .codec_name = "wm8580.0-001b",
161 .dai_fmt = SMDK_DAI_FMT,
162 .init = smdk_wm8580_init_paiftx,
163 .ops = &smdk_ops,
164 },
165};
166
167static struct snd_soc_card smdk = {
168 .name = "SMDK-I2S",
169 .owner = THIS_MODULE,
170 .dai_link = smdk_dai,
171 .num_links = ARRAY_SIZE(smdk_dai),
172
173 .dapm_widgets = smdk_wm8580_dapm_widgets,
174 .num_dapm_widgets = ARRAY_SIZE(smdk_wm8580_dapm_widgets),
175 .dapm_routes = smdk_wm8580_audio_map,
176 .num_dapm_routes = ARRAY_SIZE(smdk_wm8580_audio_map),
177};
178
179static struct platform_device *smdk_snd_device;
180
181static int __init smdk_audio_init(void)
182{
183 int ret;
184
185 smdk_snd_device = platform_device_alloc("soc-audio", -1);
186 if (!smdk_snd_device)
187 return -ENOMEM;
188
189 platform_set_drvdata(smdk_snd_device, &smdk);
190 ret = platform_device_add(smdk_snd_device);
191
192 if (ret)
193 platform_device_put(smdk_snd_device);
194
195 return ret;
196}
197module_init(smdk_audio_init);
198
199static void __exit smdk_audio_exit(void)
200{
201 platform_device_unregister(smdk_snd_device);
202}
203module_exit(smdk_audio_exit);
204
205MODULE_AUTHOR("Jaswinder Singh, jassisinghbrar@gmail.com");
206MODULE_DESCRIPTION("ALSA SoC SMDK WM8580");
207MODULE_LICENSE("GPL");
208