diff options
Diffstat (limited to 'sound/soc/pxa/zylonite.c')
| -rw-r--r-- | sound/soc/pxa/zylonite.c | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/sound/soc/pxa/zylonite.c b/sound/soc/pxa/zylonite.c new file mode 100644 index 00000000000..842d6500d61 --- /dev/null +++ b/sound/soc/pxa/zylonite.c @@ -0,0 +1,219 @@ +/* + * zylonite.c -- SoC audio for Zylonite + * + * Copyright 2008 Wolfson Microelectronics PLC. + * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + * + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/device.h> +#include <linux/i2c.h> +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/soc-dapm.h> + +#include "../codecs/wm9713.h" +#include "pxa2xx-pcm.h" +#include "pxa2xx-ac97.h" +#include "pxa-ssp.h" + +static struct snd_soc_card zylonite; + +static const struct snd_soc_dapm_widget zylonite_dapm_widgets[] = { + SND_SOC_DAPM_HP("Headphone", NULL), + SND_SOC_DAPM_MIC("Headset Microphone", NULL), + SND_SOC_DAPM_MIC("Handset Microphone", NULL), + SND_SOC_DAPM_SPK("Multiactor", NULL), + SND_SOC_DAPM_SPK("Headset Earpiece", NULL), +}; + +/* Currently supported audio map */ +static const struct snd_soc_dapm_route audio_map[] = { + + /* Headphone output connected to HPL/HPR */ + { "Headphone", NULL, "HPL" }, + { "Headphone", NULL, "HPR" }, + + /* On-board earpiece */ + { "Headset Earpiece", NULL, "OUT3" }, + + /* Headphone mic */ + { "MIC2A", NULL, "Mic Bias" }, + { "Mic Bias", NULL, "Headset Microphone" }, + + /* On-board mic */ + { "MIC1", NULL, "Mic Bias" }, + { "Mic Bias", NULL, "Handset Microphone" }, + + /* Multiactor differentially connected over SPKL/SPKR */ + { "Multiactor", NULL, "SPKL" }, + { "Multiactor", NULL, "SPKR" }, +}; + +static int zylonite_wm9713_init(struct snd_soc_codec *codec) +{ + /* Currently we only support use of the AC97 clock here. If + * CLK_POUT is selected by SW15 then the clock API will need + * to be used to request and enable it here. + */ + + snd_soc_dapm_new_controls(codec, zylonite_dapm_widgets, + ARRAY_SIZE(zylonite_dapm_widgets)); + + snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); + + /* Static setup for now */ + snd_soc_dapm_enable_pin(codec, "Headphone"); + snd_soc_dapm_enable_pin(codec, "Headset Earpiece"); + + snd_soc_dapm_sync(codec); + return 0; +} + +static int zylonite_voice_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; + struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; + unsigned int pll_out = 0; + unsigned int acds = 0; + unsigned int wm9713_div = 0; + int ret = 0; + + switch (params_rate(params)) { + case 8000: + wm9713_div = 12; + pll_out = 2048000; + break; + case 16000: + wm9713_div = 6; + pll_out = 4096000; + break; + case 48000: + default: + wm9713_div = 2; + pll_out = 12288000; + acds = 1; + break; + } + + ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | + SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); + if (ret < 0) + return ret; + + ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | + SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); + if (ret < 0) + return ret; + + ret = snd_soc_dai_set_tdm_slot(cpu_dai, + params_channels(params), + params_channels(params)); + if (ret < 0) + return ret; + + ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, pll_out); + if (ret < 0) + return ret; + + ret = snd_soc_dai_set_clkdiv(cpu_dai, PXA_SSP_AUDIO_DIV_ACDS, acds); + if (ret < 0) + return ret; + + ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0, 1); + if (ret < 0) + return ret; + + /* Note that if the PLL is in use the WM9713_PCMCLK_PLL_DIV needs + * to be set instead. + */ + ret = snd_soc_dai_set_clkdiv(codec_dai, WM9713_PCMCLK_DIV, + WM9713_PCMDIV(wm9713_div)); + if (ret < 0) + return ret; + + return 0; +} + +static struct snd_soc_ops zylonite_voice_ops = { + .hw_params = zylonite_voice_hw_params, +}; + +static struct snd_soc_dai_link zylonite_dai[] = { +{ + .name = "AC97", + .stream_name = "AC97 HiFi", + .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI], + .codec_dai = &wm9713_dai[WM9713_DAI_AC97_HIFI], + .init = zylonite_wm9713_init, +}, +{ + .name = "AC97 Aux", + .stream_name = "AC97 Aux", + .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX], + .codec_dai = &wm9713_dai[WM9713_DAI_AC97_AUX], +}, +{ + .name = "WM9713 Voice", + .stream_name = "WM9713 Voice", + .cpu_dai = &pxa_ssp_dai[PXA_DAI_SSP3], + .codec_dai = &wm9713_dai[WM9713_DAI_PCM_VOICE], + .ops = &zylonite_voice_ops, +}, +}; + +static struct snd_soc_card zylonite = { + .name = "Zylonite", + .dai_link = zylonite_dai, + .num_links = ARRAY_SIZE(zylonite_dai), +}; + +static struct snd_soc_device zylonite_snd_ac97_devdata = { + .card = &zylonite, + .platform = &pxa2xx_soc_platform, + .codec_dev = &soc_codec_dev_wm9713, +}; + +static struct platform_device *zylonite_snd_ac97_device; + +static int __init zylonite_init(void) +{ + int ret; + + zylonite_snd_ac97_device = platform_device_alloc("soc-audio", -1); + if (!zylonite_snd_ac97_device) + return -ENOMEM; + + platform_set_drvdata(zylonite_snd_ac97_device, + &zylonite_snd_ac97_devdata); + zylonite_snd_ac97_devdata.dev = &zylonite_snd_ac97_device->dev; + + ret = platform_device_add(zylonite_snd_ac97_device); + if (ret != 0) + platform_device_put(zylonite_snd_ac97_device); + + return ret; +} + +static void __exit zylonite_exit(void) +{ + platform_device_unregister(zylonite_snd_ac97_device); +} + +module_init(zylonite_init); +module_exit(zylonite_exit); + +MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); +MODULE_DESCRIPTION("ALSA SoC WM9713 Zylonite"); +MODULE_LICENSE("GPL"); |