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9#include <linux/module.h>
10#include <linux/moduleparam.h>
11#include <linux/device.h>
12#include <linux/clk.h>
13#include <linux/i2c.h>
14#include <sound/core.h>
15#include <sound/pcm.h>
16#include <sound/pcm_params.h>
17#include <sound/soc.h>
18
19#include "../codecs/wm9713.h"
20#include "pxa-ssp.h"
21
22
23
24
25
26
27static int clk_pout;
28module_param(clk_pout, int, 0);
29MODULE_PARM_DESC(clk_pout, "Use CLK_POUT as WM9713 MCLK (SW15 on board).");
30
31static struct clk *pout;
32
33static struct snd_soc_card zylonite;
34
35static const struct snd_soc_dapm_widget zylonite_dapm_widgets[] = {
36 SND_SOC_DAPM_HP("Headphone", NULL),
37 SND_SOC_DAPM_MIC("Headset Microphone", NULL),
38 SND_SOC_DAPM_MIC("Handset Microphone", NULL),
39 SND_SOC_DAPM_SPK("Multiactor", NULL),
40 SND_SOC_DAPM_SPK("Headset Earpiece", NULL),
41};
42
43
44static const struct snd_soc_dapm_route audio_map[] = {
45
46
47 { "Headphone", NULL, "HPL" },
48 { "Headphone", NULL, "HPR" },
49
50
51 { "Headset Earpiece", NULL, "OUT3" },
52
53
54 { "MIC2A", NULL, "Mic Bias" },
55 { "Mic Bias", NULL, "Headset Microphone" },
56
57
58 { "MIC1", NULL, "Mic Bias" },
59 { "Mic Bias", NULL, "Handset Microphone" },
60
61
62 { "Multiactor", NULL, "SPKL" },
63 { "Multiactor", NULL, "SPKR" },
64};
65
66static int zylonite_wm9713_init(struct snd_soc_pcm_runtime *rtd)
67{
68 if (clk_pout)
69 snd_soc_dai_set_pll(rtd->codec_dai, 0, 0,
70 clk_get_rate(pout), 0);
71
72 return 0;
73}
74
75static int zylonite_voice_hw_params(struct snd_pcm_substream *substream,
76 struct snd_pcm_hw_params *params)
77{
78 struct snd_soc_pcm_runtime *rtd = substream->private_data;
79 struct snd_soc_dai *codec_dai = rtd->codec_dai;
80 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
81 unsigned int wm9713_div = 0;
82 int ret = 0;
83 int rate = params_rate(params);
84
85
86
87
88
89
90 switch (rate) {
91 case 8000:
92 wm9713_div = 12;
93 break;
94 case 16000:
95 wm9713_div = 6;
96 break;
97 case 48000:
98 wm9713_div = 2;
99 break;
100 default:
101
102 return -EINVAL;
103 }
104
105 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0, 1);
106 if (ret < 0)
107 return ret;
108
109 if (clk_pout)
110 ret = snd_soc_dai_set_clkdiv(codec_dai, WM9713_PCMCLK_PLL_DIV,
111 WM9713_PCMDIV(wm9713_div));
112 else
113 ret = snd_soc_dai_set_clkdiv(codec_dai, WM9713_PCMCLK_DIV,
114 WM9713_PCMDIV(wm9713_div));
115 if (ret < 0)
116 return ret;
117
118 return 0;
119}
120
121static const struct snd_soc_ops zylonite_voice_ops = {
122 .hw_params = zylonite_voice_hw_params,
123};
124
125static struct snd_soc_dai_link zylonite_dai[] = {
126{
127 .name = "AC97",
128 .stream_name = "AC97 HiFi",
129 .codec_name = "wm9713-codec",
130 .platform_name = "pxa-pcm-audio",
131 .cpu_dai_name = "pxa2xx-ac97",
132 .codec_dai_name = "wm9713-hifi",
133 .init = zylonite_wm9713_init,
134},
135{
136 .name = "AC97 Aux",
137 .stream_name = "AC97 Aux",
138 .codec_name = "wm9713-codec",
139 .platform_name = "pxa-pcm-audio",
140 .cpu_dai_name = "pxa2xx-ac97-aux",
141 .codec_dai_name = "wm9713-aux",
142},
143{
144 .name = "WM9713 Voice",
145 .stream_name = "WM9713 Voice",
146 .codec_name = "wm9713-codec",
147 .platform_name = "pxa-pcm-audio",
148 .cpu_dai_name = "pxa-ssp-dai.2",
149 .codec_dai_name = "wm9713-voice",
150 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
151 SND_SOC_DAIFMT_CBS_CFS,
152 .ops = &zylonite_voice_ops,
153},
154};
155
156static int zylonite_probe(struct snd_soc_card *card)
157{
158 int ret;
159
160 if (clk_pout) {
161 pout = clk_get(NULL, "CLK_POUT");
162 if (IS_ERR(pout)) {
163 dev_err(card->dev, "Unable to obtain CLK_POUT: %ld\n",
164 PTR_ERR(pout));
165 return PTR_ERR(pout);
166 }
167
168 ret = clk_enable(pout);
169 if (ret != 0) {
170 dev_err(card->dev, "Unable to enable CLK_POUT: %d\n",
171 ret);
172 clk_put(pout);
173 return ret;
174 }
175
176 dev_dbg(card->dev, "MCLK enabled at %luHz\n",
177 clk_get_rate(pout));
178 }
179
180 return 0;
181}
182
183static int zylonite_remove(struct snd_soc_card *card)
184{
185 if (clk_pout) {
186 clk_disable(pout);
187 clk_put(pout);
188 }
189
190 return 0;
191}
192
193static int zylonite_suspend_post(struct snd_soc_card *card)
194{
195 if (clk_pout)
196 clk_disable(pout);
197
198 return 0;
199}
200
201static int zylonite_resume_pre(struct snd_soc_card *card)
202{
203 int ret = 0;
204
205 if (clk_pout) {
206 ret = clk_enable(pout);
207 if (ret != 0)
208 dev_err(card->dev, "Unable to enable CLK_POUT: %d\n",
209 ret);
210 }
211
212 return ret;
213}
214
215static struct snd_soc_card zylonite = {
216 .name = "Zylonite",
217 .owner = THIS_MODULE,
218 .probe = &zylonite_probe,
219 .remove = &zylonite_remove,
220 .suspend_post = &zylonite_suspend_post,
221 .resume_pre = &zylonite_resume_pre,
222 .dai_link = zylonite_dai,
223 .num_links = ARRAY_SIZE(zylonite_dai),
224
225 .dapm_widgets = zylonite_dapm_widgets,
226 .num_dapm_widgets = ARRAY_SIZE(zylonite_dapm_widgets),
227 .dapm_routes = audio_map,
228 .num_dapm_routes = ARRAY_SIZE(audio_map),
229};
230
231static struct platform_device *zylonite_snd_ac97_device;
232
233static int __init zylonite_init(void)
234{
235 int ret;
236
237 zylonite_snd_ac97_device = platform_device_alloc("soc-audio", -1);
238 if (!zylonite_snd_ac97_device)
239 return -ENOMEM;
240
241 platform_set_drvdata(zylonite_snd_ac97_device, &zylonite);
242
243 ret = platform_device_add(zylonite_snd_ac97_device);
244 if (ret != 0)
245 platform_device_put(zylonite_snd_ac97_device);
246
247 return ret;
248}
249
250static void __exit zylonite_exit(void)
251{
252 platform_device_unregister(zylonite_snd_ac97_device);
253}
254
255module_init(zylonite_init);
256module_exit(zylonite_exit);
257
258MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
259MODULE_DESCRIPTION("ALSA SoC WM9713 Zylonite");
260MODULE_LICENSE("GPL");
261