forked from luck/tmp_suning_uos_patched
ASoC: add support for the sh7722 Migo-R board
Add support for audio on sh7722-based Migo-R boards, using SIU and wm8978 codec, recording via external microphone and playback via headphones are implemented. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Guennadi Liakhovetski
Mark Brown
parent
9e9d04c05f
commit
9f5b64b767
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@ -61,4 +61,12 @@ config SND_FSI_DA7210
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This option enables generic sound support for the
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FSI - DA7210 unit
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config SND_SIU_MIGOR
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tristate "SIU sound support on Migo-R"
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depends on SH_MIGOR
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select SND_SOC_SH4_SIU
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select SND_SOC_WM8978
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help
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This option enables sound support for the SH7722 Migo-R board
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endmenu
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@ -16,7 +16,9 @@ obj-$(CONFIG_SND_SOC_SH4_SIU) += snd-soc-siu.o
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snd-soc-sh7760-ac97-objs := sh7760-ac97.o
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snd-soc-fsi-ak4642-objs := fsi-ak4642.o
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snd-soc-fsi-da7210-objs := fsi-da7210.o
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snd-soc-migor-objs := migor.o
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obj-$(CONFIG_SND_SH7760_AC97) += snd-soc-sh7760-ac97.o
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obj-$(CONFIG_SND_FSI_AK4642) += snd-soc-fsi-ak4642.o
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obj-$(CONFIG_SND_FSI_DA7210) += snd-soc-fsi-da7210.o
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obj-$(CONFIG_SND_SIU_MIGOR) += snd-soc-migor.o
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222
sound/soc/sh/migor.c
Normal file
222
sound/soc/sh/migor.c
Normal file
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@ -0,0 +1,222 @@
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/*
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* ALSA SoC driver for Migo-R
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*
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* Copyright (C) 2009-2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/device.h>
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#include <linux/firmware.h>
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#include <linux/module.h>
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#include <asm/clock.h>
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#include <cpu/sh7722.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include "../codecs/wm8978.h"
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#include "siu.h"
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/* Default 8000Hz sampling frequency */
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static unsigned long codec_freq = 8000 * 512;
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static unsigned int use_count;
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/* External clock, sourced from the codec at the SIUMCKB pin */
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static unsigned long siumckb_recalc(struct clk *clk)
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{
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return codec_freq;
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}
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static struct clk_ops siumckb_clk_ops = {
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.recalc = siumckb_recalc,
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};
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static struct clk siumckb_clk = {
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.name = "siumckb_clk",
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.id = -1,
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.ops = &siumckb_clk_ops,
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.rate = 0, /* initialised at run-time */
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};
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static int migor_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
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int ret;
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unsigned int rate = params_rate(params);
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ret = snd_soc_dai_set_sysclk(codec_dai, WM8978_PLL, 13000000,
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SND_SOC_CLOCK_IN);
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if (ret < 0)
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return ret;
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ret = snd_soc_dai_set_clkdiv(codec_dai, WM8978_DACCLK, 8);
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if (ret < 0)
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return ret;
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ret = snd_soc_dai_set_clkdiv(codec_dai, WM8978_OPCLKRATE, rate * 512);
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if (ret < 0)
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return ret;
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ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_NB_IF |
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SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS);
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if (ret < 0)
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return ret;
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ret = snd_soc_dai_set_fmt(rtd->dai->cpu_dai, SND_SOC_DAIFMT_NB_IF |
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SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS);
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if (ret < 0)
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return ret;
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codec_freq = rate * 512;
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/*
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* This propagates the parent frequency change to children and
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* recalculates the frequency table
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*/
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clk_set_rate(&siumckb_clk, codec_freq);
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dev_dbg(codec_dai->dev, "%s: configure %luHz\n", __func__, codec_freq);
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ret = snd_soc_dai_set_sysclk(rtd->dai->cpu_dai, SIU_CLKB_EXT,
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codec_freq / 2, SND_SOC_CLOCK_IN);
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if (!ret)
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use_count++;
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return ret;
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}
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static int migor_hw_free(struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
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if (use_count) {
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use_count--;
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if (!use_count)
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snd_soc_dai_set_sysclk(codec_dai, WM8978_PLL, 0,
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SND_SOC_CLOCK_IN);
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} else {
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dev_dbg(codec_dai->dev, "Unbalanced hw_free!\n");
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}
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return 0;
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}
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static struct snd_soc_ops migor_dai_ops = {
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.hw_params = migor_hw_params,
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.hw_free = migor_hw_free,
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};
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static const struct snd_soc_dapm_widget migor_dapm_widgets[] = {
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SND_SOC_DAPM_HP("Headphone", NULL),
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SND_SOC_DAPM_MIC("Onboard Microphone", NULL),
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SND_SOC_DAPM_MIC("External Microphone", NULL),
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};
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static const struct snd_soc_dapm_route audio_map[] = {
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/* Headphone output connected to LHP/RHP, enable OUT4 for VMID */
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{ "Headphone", NULL, "OUT4 VMID" },
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{ "OUT4 VMID", NULL, "LHP" },
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{ "OUT4 VMID", NULL, "RHP" },
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/* On-board microphone */
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{ "RMICN", NULL, "Mic Bias" },
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{ "RMICP", NULL, "Mic Bias" },
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{ "Mic Bias", NULL, "Onboard Microphone" },
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/* External microphone */
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{ "LMICN", NULL, "Mic Bias" },
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{ "LMICP", NULL, "Mic Bias" },
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{ "Mic Bias", NULL, "External Microphone" },
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};
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static int migor_dai_init(struct snd_soc_codec *codec)
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{
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snd_soc_dapm_new_controls(codec, migor_dapm_widgets,
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ARRAY_SIZE(migor_dapm_widgets));
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snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
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return 0;
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}
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/* migor digital audio interface glue - connects codec <--> CPU */
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static struct snd_soc_dai_link migor_dai = {
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.name = "wm8978",
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.stream_name = "WM8978",
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.cpu_dai = &siu_i2s_dai,
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.codec_dai = &wm8978_dai,
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.ops = &migor_dai_ops,
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.init = migor_dai_init,
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};
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/* migor audio machine driver */
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static struct snd_soc_card snd_soc_migor = {
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.name = "Migo-R",
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.platform = &siu_platform,
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.dai_link = &migor_dai,
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.num_links = 1,
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};
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/* migor audio subsystem */
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static struct snd_soc_device migor_snd_devdata = {
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.card = &snd_soc_migor,
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.codec_dev = &soc_codec_dev_wm8978,
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};
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static struct platform_device *migor_snd_device;
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static int __init migor_init(void)
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{
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int ret;
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ret = clk_register(&siumckb_clk);
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if (ret < 0)
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return ret;
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/* Port number used on this machine: port B */
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migor_snd_device = platform_device_alloc("soc-audio", 1);
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if (!migor_snd_device) {
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ret = -ENOMEM;
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goto epdevalloc;
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}
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platform_set_drvdata(migor_snd_device, &migor_snd_devdata);
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migor_snd_devdata.dev = &migor_snd_device->dev;
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ret = platform_device_add(migor_snd_device);
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if (ret)
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goto epdevadd;
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return 0;
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epdevadd:
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platform_device_put(migor_snd_device);
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epdevalloc:
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clk_unregister(&siumckb_clk);
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return ret;
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}
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static void __exit migor_exit(void)
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{
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clk_unregister(&siumckb_clk);
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platform_device_unregister(migor_snd_device);
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}
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module_init(migor_init);
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module_exit(migor_exit);
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MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
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MODULE_DESCRIPTION("ALSA SoC Migor");
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MODULE_LICENSE("GPL v2");
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