2 * zylonite.c -- SoC audio for Zylonite
4 * Copyright 2008 Wolfson Microelectronics PLC.
5 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of the
10 * License, or (at your option) any later version.
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/device.h>
17 #include <linux/clk.h>
18 #include <linux/i2c.h>
19 #include <sound/core.h>
20 #include <sound/pcm.h>
21 #include <sound/pcm_params.h>
22 #include <sound/soc.h>
23 #include <sound/soc-dapm.h>
25 #include "../codecs/wm9713.h"
26 #include "pxa2xx-pcm.h"
27 #include "pxa2xx-ac97.h"
31 * There is a physical switch SW15 on the board which changes the MCLK
32 * for the WM9713 between the standard AC97 master clock and the
33 * output of the CLK_POUT signal from the PXA.
36 module_param(clk_pout
, int, 0);
37 MODULE_PARM_DESC(clk_pout
, "Use CLK_POUT as WM9713 MCLK (SW15 on board).");
39 static struct clk
*pout
;
41 static struct snd_soc_card zylonite
;
43 static const struct snd_soc_dapm_widget zylonite_dapm_widgets
[] = {
44 SND_SOC_DAPM_HP("Headphone", NULL
),
45 SND_SOC_DAPM_MIC("Headset Microphone", NULL
),
46 SND_SOC_DAPM_MIC("Handset Microphone", NULL
),
47 SND_SOC_DAPM_SPK("Multiactor", NULL
),
48 SND_SOC_DAPM_SPK("Headset Earpiece", NULL
),
51 /* Currently supported audio map */
52 static const struct snd_soc_dapm_route audio_map
[] = {
54 /* Headphone output connected to HPL/HPR */
55 { "Headphone", NULL
, "HPL" },
56 { "Headphone", NULL
, "HPR" },
58 /* On-board earpiece */
59 { "Headset Earpiece", NULL
, "OUT3" },
62 { "MIC2A", NULL
, "Mic Bias" },
63 { "Mic Bias", NULL
, "Headset Microphone" },
66 { "MIC1", NULL
, "Mic Bias" },
67 { "Mic Bias", NULL
, "Handset Microphone" },
69 /* Multiactor differentially connected over SPKL/SPKR */
70 { "Multiactor", NULL
, "SPKL" },
71 { "Multiactor", NULL
, "SPKR" },
74 static int zylonite_wm9713_init(struct snd_soc_codec
*codec
)
77 snd_soc_dai_set_pll(&codec
->dai
[0], 0, clk_get_rate(pout
), 0);
79 snd_soc_dapm_new_controls(codec
, zylonite_dapm_widgets
,
80 ARRAY_SIZE(zylonite_dapm_widgets
));
82 snd_soc_dapm_add_routes(codec
, audio_map
, ARRAY_SIZE(audio_map
));
84 /* Static setup for now */
85 snd_soc_dapm_enable_pin(codec
, "Headphone");
86 snd_soc_dapm_enable_pin(codec
, "Headset Earpiece");
88 snd_soc_dapm_sync(codec
);
92 static int zylonite_voice_hw_params(struct snd_pcm_substream
*substream
,
93 struct snd_pcm_hw_params
*params
)
95 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
96 struct snd_soc_dai
*codec_dai
= rtd
->dai
->codec_dai
;
97 struct snd_soc_dai
*cpu_dai
= rtd
->dai
->cpu_dai
;
98 unsigned int pll_out
= 0;
99 unsigned int acds
= 0;
100 unsigned int wm9713_div
= 0;
103 switch (params_rate(params
)) {
120 ret
= snd_soc_dai_set_fmt(codec_dai
, SND_SOC_DAIFMT_I2S
|
121 SND_SOC_DAIFMT_NB_NF
| SND_SOC_DAIFMT_CBS_CFS
);
125 ret
= snd_soc_dai_set_fmt(cpu_dai
, SND_SOC_DAIFMT_I2S
|
126 SND_SOC_DAIFMT_NB_NF
| SND_SOC_DAIFMT_CBS_CFS
);
130 /* We're not really in network mode but the emulation wants this. */
131 ret
= snd_soc_dai_set_tdm_slot(cpu_dai
, 1, 1);
135 ret
= snd_soc_dai_set_pll(cpu_dai
, 0, 0, pll_out
);
139 ret
= snd_soc_dai_set_clkdiv(cpu_dai
, PXA_SSP_AUDIO_DIV_ACDS
, acds
);
143 ret
= snd_soc_dai_set_sysclk(cpu_dai
, PXA_SSP_CLK_AUDIO
, 0, 1);
148 ret
= snd_soc_dai_set_clkdiv(codec_dai
, WM9713_PCMCLK_PLL_DIV
,
149 WM9713_PCMDIV(wm9713_div
));
151 ret
= snd_soc_dai_set_clkdiv(codec_dai
, WM9713_PCMCLK_DIV
,
152 WM9713_PCMDIV(wm9713_div
));
159 static struct snd_soc_ops zylonite_voice_ops
= {
160 .hw_params
= zylonite_voice_hw_params
,
163 static struct snd_soc_dai_link zylonite_dai
[] = {
166 .stream_name
= "AC97 HiFi",
167 .cpu_dai
= &pxa_ac97_dai
[PXA2XX_DAI_AC97_HIFI
],
168 .codec_dai
= &wm9713_dai
[WM9713_DAI_AC97_HIFI
],
169 .init
= zylonite_wm9713_init
,
173 .stream_name
= "AC97 Aux",
174 .cpu_dai
= &pxa_ac97_dai
[PXA2XX_DAI_AC97_AUX
],
175 .codec_dai
= &wm9713_dai
[WM9713_DAI_AC97_AUX
],
178 .name
= "WM9713 Voice",
179 .stream_name
= "WM9713 Voice",
180 .cpu_dai
= &pxa_ssp_dai
[PXA_DAI_SSP3
],
181 .codec_dai
= &wm9713_dai
[WM9713_DAI_PCM_VOICE
],
182 .ops
= &zylonite_voice_ops
,
186 static int zylonite_probe(struct platform_device
*pdev
)
191 pout
= clk_get(NULL
, "CLK_POUT");
193 dev_err(&pdev
->dev
, "Unable to obtain CLK_POUT: %ld\n",
195 return PTR_ERR(pout
);
198 ret
= clk_enable(pout
);
200 dev_err(&pdev
->dev
, "Unable to enable CLK_POUT: %d\n",
206 dev_dbg(&pdev
->dev
, "MCLK enabled at %luHz\n",
213 static int zylonite_remove(struct platform_device
*pdev
)
223 static int zylonite_suspend_post(struct platform_device
*pdev
,
232 static int zylonite_resume_pre(struct platform_device
*pdev
)
237 ret
= clk_enable(pout
);
239 dev_err(&pdev
->dev
, "Unable to enable CLK_POUT: %d\n",
246 static struct snd_soc_card zylonite
= {
248 .probe
= &zylonite_probe
,
249 .remove
= &zylonite_remove
,
250 .suspend_post
= &zylonite_suspend_post
,
251 .resume_pre
= &zylonite_resume_pre
,
252 .platform
= &pxa2xx_soc_platform
,
253 .dai_link
= zylonite_dai
,
254 .num_links
= ARRAY_SIZE(zylonite_dai
),
257 static struct snd_soc_device zylonite_snd_ac97_devdata
= {
259 .codec_dev
= &soc_codec_dev_wm9713
,
262 static struct platform_device
*zylonite_snd_ac97_device
;
264 static int __init
zylonite_init(void)
268 zylonite_snd_ac97_device
= platform_device_alloc("soc-audio", -1);
269 if (!zylonite_snd_ac97_device
)
272 platform_set_drvdata(zylonite_snd_ac97_device
,
273 &zylonite_snd_ac97_devdata
);
274 zylonite_snd_ac97_devdata
.dev
= &zylonite_snd_ac97_device
->dev
;
276 ret
= platform_device_add(zylonite_snd_ac97_device
);
278 platform_device_put(zylonite_snd_ac97_device
);
283 static void __exit
zylonite_exit(void)
285 platform_device_unregister(zylonite_snd_ac97_device
);
288 module_init(zylonite_init
);
289 module_exit(zylonite_exit
);
291 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
292 MODULE_DESCRIPTION("ALSA SoC WM9713 Zylonite");
293 MODULE_LICENSE("GPL");