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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(asoc_rtd_to_codec(rtd, 0), 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 = asoc_substream_to_rtd(substream);
79 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
80 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
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
125SND_SOC_DAILINK_DEFS(ac97,
126 DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97")),
127 DAILINK_COMP_ARRAY(COMP_CODEC("wm9713-codec", "wm9713-hifi")),
128 DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
129
130SND_SOC_DAILINK_DEFS(ac97_aux,
131 DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97-aux")),
132 DAILINK_COMP_ARRAY(COMP_CODEC("wm9713-codec", "wm9713-aux")),
133 DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
134
135SND_SOC_DAILINK_DEFS(voice,
136 DAILINK_COMP_ARRAY(COMP_CPU("pxa-ssp-dai.2")),
137 DAILINK_COMP_ARRAY(COMP_CODEC("wm9713-codec", "wm9713-voice")),
138 DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
139
140static struct snd_soc_dai_link zylonite_dai[] = {
141{
142 .name = "AC97",
143 .stream_name = "AC97 HiFi",
144 .init = zylonite_wm9713_init,
145 SND_SOC_DAILINK_REG(ac97),
146},
147{
148 .name = "AC97 Aux",
149 .stream_name = "AC97 Aux",
150 SND_SOC_DAILINK_REG(ac97_aux),
151},
152{
153 .name = "WM9713 Voice",
154 .stream_name = "WM9713 Voice",
155 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
156 SND_SOC_DAIFMT_CBS_CFS,
157 .ops = &zylonite_voice_ops,
158 SND_SOC_DAILINK_REG(voice),
159},
160};
161
162static int zylonite_probe(struct snd_soc_card *card)
163{
164 int ret;
165
166 if (clk_pout) {
167 pout = clk_get(NULL, "CLK_POUT");
168 if (IS_ERR(pout)) {
169 dev_err(card->dev, "Unable to obtain CLK_POUT: %ld\n",
170 PTR_ERR(pout));
171 return PTR_ERR(pout);
172 }
173
174 ret = clk_enable(pout);
175 if (ret != 0) {
176 dev_err(card->dev, "Unable to enable CLK_POUT: %d\n",
177 ret);
178 clk_put(pout);
179 return ret;
180 }
181
182 dev_dbg(card->dev, "MCLK enabled at %luHz\n",
183 clk_get_rate(pout));
184 }
185
186 return 0;
187}
188
189static int zylonite_remove(struct snd_soc_card *card)
190{
191 if (clk_pout) {
192 clk_disable(pout);
193 clk_put(pout);
194 }
195
196 return 0;
197}
198
199static int zylonite_suspend_post(struct snd_soc_card *card)
200{
201 if (clk_pout)
202 clk_disable(pout);
203
204 return 0;
205}
206
207static int zylonite_resume_pre(struct snd_soc_card *card)
208{
209 int ret = 0;
210
211 if (clk_pout) {
212 ret = clk_enable(pout);
213 if (ret != 0)
214 dev_err(card->dev, "Unable to enable CLK_POUT: %d\n",
215 ret);
216 }
217
218 return ret;
219}
220
221static struct snd_soc_card zylonite = {
222 .name = "Zylonite",
223 .owner = THIS_MODULE,
224 .probe = &zylonite_probe,
225 .remove = &zylonite_remove,
226 .suspend_post = &zylonite_suspend_post,
227 .resume_pre = &zylonite_resume_pre,
228 .dai_link = zylonite_dai,
229 .num_links = ARRAY_SIZE(zylonite_dai),
230
231 .dapm_widgets = zylonite_dapm_widgets,
232 .num_dapm_widgets = ARRAY_SIZE(zylonite_dapm_widgets),
233 .dapm_routes = audio_map,
234 .num_dapm_routes = ARRAY_SIZE(audio_map),
235};
236
237static struct platform_device *zylonite_snd_ac97_device;
238
239static int __init zylonite_init(void)
240{
241 int ret;
242
243 zylonite_snd_ac97_device = platform_device_alloc("soc-audio", -1);
244 if (!zylonite_snd_ac97_device)
245 return -ENOMEM;
246
247 platform_set_drvdata(zylonite_snd_ac97_device, &zylonite);
248
249 ret = platform_device_add(zylonite_snd_ac97_device);
250 if (ret != 0)
251 platform_device_put(zylonite_snd_ac97_device);
252
253 return ret;
254}
255
256static void __exit zylonite_exit(void)
257{
258 platform_device_unregister(zylonite_snd_ac97_device);
259}
260
261module_init(zylonite_init);
262module_exit(zylonite_exit);
263
264MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
265MODULE_DESCRIPTION("ALSA SoC WM9713 Zylonite");
266MODULE_LICENSE("GPL");
267
