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10#include "../codecs/wm8994.h"
11#include <sound/pcm_params.h>
12#include <sound/soc.h>
13#include <linux/module.h>
14#include <linux/of.h>
15#include <linux/of_device.h>
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40#define SMDK_WM8994_FREQ 16934000
41
42struct smdk_wm8994_data {
43 int mclk1_rate;
44};
45
46
47static struct smdk_wm8994_data smdk_board_data = {
48 .mclk1_rate = SMDK_WM8994_FREQ,
49};
50
51static int smdk_hw_params(struct snd_pcm_substream *substream,
52 struct snd_pcm_hw_params *params)
53{
54 struct snd_soc_pcm_runtime *rtd = substream->private_data;
55 struct snd_soc_dai *codec_dai = rtd->codec_dai;
56 unsigned int pll_out;
57 int ret;
58
59
60 if (params_width(params) == 24)
61 pll_out = params_rate(params) * 384;
62 else if (params_rate(params) == 8000 || params_rate(params) == 11025)
63 pll_out = params_rate(params) * 512;
64 else
65 pll_out = params_rate(params) * 256;
66
67 ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
68 SMDK_WM8994_FREQ, pll_out);
69 if (ret < 0)
70 return ret;
71
72 ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1,
73 pll_out, SND_SOC_CLOCK_IN);
74 if (ret < 0)
75 return ret;
76
77 return 0;
78}
79
80
81
82
83static struct snd_soc_ops smdk_ops = {
84 .hw_params = smdk_hw_params,
85};
86
87static int smdk_wm8994_init_paiftx(struct snd_soc_pcm_runtime *rtd)
88{
89 struct snd_soc_dapm_context *dapm = &rtd->card->dapm;
90
91
92 snd_soc_dapm_nc_pin(dapm, "HPOUT2P");
93 snd_soc_dapm_nc_pin(dapm, "HPOUT2N");
94 snd_soc_dapm_nc_pin(dapm, "SPKOUTLN");
95 snd_soc_dapm_nc_pin(dapm, "SPKOUTLP");
96 snd_soc_dapm_nc_pin(dapm, "SPKOUTRP");
97 snd_soc_dapm_nc_pin(dapm, "SPKOUTRN");
98 snd_soc_dapm_nc_pin(dapm, "LINEOUT1N");
99 snd_soc_dapm_nc_pin(dapm, "LINEOUT1P");
100 snd_soc_dapm_nc_pin(dapm, "LINEOUT2N");
101 snd_soc_dapm_nc_pin(dapm, "LINEOUT2P");
102 snd_soc_dapm_nc_pin(dapm, "IN1LP");
103 snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN");
104 snd_soc_dapm_nc_pin(dapm, "IN1RP");
105 snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP");
106
107 return 0;
108}
109
110static struct snd_soc_dai_link smdk_dai[] = {
111 {
112 .name = "WM8994 AIF1",
113 .stream_name = "Pri_Dai",
114 .cpu_dai_name = "samsung-i2s.0",
115 .codec_dai_name = "wm8994-aif1",
116 .platform_name = "samsung-i2s.0",
117 .codec_name = "wm8994-codec",
118 .init = smdk_wm8994_init_paiftx,
119 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
120 SND_SOC_DAIFMT_CBM_CFM,
121 .ops = &smdk_ops,
122 }, {
123 .name = "Sec_FIFO TX",
124 .stream_name = "Sec_Dai",
125 .cpu_dai_name = "samsung-i2s-sec",
126 .codec_dai_name = "wm8994-aif1",
127 .platform_name = "samsung-i2s-sec",
128 .codec_name = "wm8994-codec",
129 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
130 SND_SOC_DAIFMT_CBM_CFM,
131 .ops = &smdk_ops,
132 },
133};
134
135static struct snd_soc_card smdk = {
136 .name = "SMDK-I2S",
137 .owner = THIS_MODULE,
138 .dai_link = smdk_dai,
139 .num_links = ARRAY_SIZE(smdk_dai),
140};
141
142static const struct of_device_id samsung_wm8994_of_match[] = {
143 { .compatible = "samsung,smdk-wm8994", .data = &smdk_board_data },
144 {},
145};
146MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match);
147
148static int smdk_audio_probe(struct platform_device *pdev)
149{
150 int ret;
151 struct device_node *np = pdev->dev.of_node;
152 struct snd_soc_card *card = &smdk;
153 struct smdk_wm8994_data *board;
154 const struct of_device_id *id;
155
156 card->dev = &pdev->dev;
157
158 board = devm_kzalloc(&pdev->dev, sizeof(*board), GFP_KERNEL);
159 if (!board)
160 return -ENOMEM;
161
162 if (np) {
163 smdk_dai[0].cpu_dai_name = NULL;
164 smdk_dai[0].cpu_of_node = of_parse_phandle(np,
165 "samsung,i2s-controller", 0);
166 if (!smdk_dai[0].cpu_of_node) {
167 dev_err(&pdev->dev,
168 "Property 'samsung,i2s-controller' missing or invalid\n");
169 ret = -EINVAL;
170 }
171
172 smdk_dai[0].platform_name = NULL;
173 smdk_dai[0].platform_of_node = smdk_dai[0].cpu_of_node;
174 }
175
176 id = of_match_device(of_match_ptr(samsung_wm8994_of_match), &pdev->dev);
177 if (id)
178 *board = *((struct smdk_wm8994_data *)id->data);
179
180 platform_set_drvdata(pdev, board);
181
182 ret = devm_snd_soc_register_card(&pdev->dev, card);
183
184 if (ret)
185 dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret);
186
187 return ret;
188}
189
190static struct platform_driver smdk_audio_driver = {
191 .driver = {
192 .name = "smdk-audio-wm8994",
193 .of_match_table = of_match_ptr(samsung_wm8994_of_match),
194 .pm = &snd_soc_pm_ops,
195 },
196 .probe = smdk_audio_probe,
197};
198
199module_platform_driver(smdk_audio_driver);
200
201MODULE_DESCRIPTION("ALSA SoC SMDK WM8994");
202MODULE_LICENSE("GPL");
203MODULE_ALIAS("platform:smdk-audio-wm8994");
204
