2008-02-18 17:40:22 +07:00
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/*
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* ASoC driver for TI DAVINCI EVM platform
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*
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2008-09-30 02:14:11 +07:00
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* Author: Vladimir Barinov, <vbarinov@embeddedalley.com>
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2008-02-18 17:40:22 +07:00
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* Copyright: (C) 2007 MontaVista Software, Inc., <source@mvista.com>
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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/module.h>
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#include <linux/moduleparam.h>
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#include <linux/timer.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.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 <asm/dma.h>
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2008-08-05 22:14:15 +07:00
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#include <mach/hardware.h>
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2008-02-18 17:40:22 +07:00
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#include "../codecs/tlv320aic3x.h"
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#include "davinci-pcm.h"
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#include "davinci-i2s.h"
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#define EVM_CODEC_CLOCK 22579200
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static int evm_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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2008-07-07 22:07:42 +07:00
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struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
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struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
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2008-02-18 17:40:22 +07:00
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int ret = 0;
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/* set codec DAI configuration */
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2008-07-08 19:19:18 +07:00
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ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
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2008-02-18 17:40:22 +07:00
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SND_SOC_DAIFMT_CBM_CFM);
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if (ret < 0)
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return ret;
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/* set cpu DAI configuration */
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2008-07-08 19:19:18 +07:00
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ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_CBM_CFM |
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2008-02-18 17:40:22 +07:00
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SND_SOC_DAIFMT_IB_NF);
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if (ret < 0)
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return ret;
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/* set the codec system clock */
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2008-07-08 19:19:18 +07:00
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ret = snd_soc_dai_set_sysclk(codec_dai, 0, EVM_CODEC_CLOCK,
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2008-02-18 17:40:22 +07:00
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SND_SOC_CLOCK_OUT);
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if (ret < 0)
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return ret;
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return 0;
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}
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static struct snd_soc_ops evm_ops = {
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.hw_params = evm_hw_params,
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};
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/* davinci-evm machine dapm widgets */
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static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
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SND_SOC_DAPM_HP("Headphone Jack", NULL),
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SND_SOC_DAPM_LINE("Line Out", NULL),
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SND_SOC_DAPM_MIC("Mic Jack", NULL),
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SND_SOC_DAPM_LINE("Line In", NULL),
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};
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/* davinci-evm machine audio_mapnections to the codec pins */
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2008-05-13 19:58:30 +07:00
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static const struct snd_soc_dapm_route audio_map[] = {
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2008-02-18 17:40:22 +07:00
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/* Headphone connected to HPLOUT, HPROUT */
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{"Headphone Jack", NULL, "HPLOUT"},
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{"Headphone Jack", NULL, "HPROUT"},
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/* Line Out connected to LLOUT, RLOUT */
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{"Line Out", NULL, "LLOUT"},
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{"Line Out", NULL, "RLOUT"},
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/* Mic connected to (MIC3L | MIC3R) */
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{"MIC3L", NULL, "Mic Bias 2V"},
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{"MIC3R", NULL, "Mic Bias 2V"},
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{"Mic Bias 2V", NULL, "Mic Jack"},
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/* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */
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{"LINE1L", NULL, "Line In"},
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{"LINE2L", NULL, "Line In"},
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{"LINE1R", NULL, "Line In"},
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{"LINE2R", NULL, "Line In"},
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};
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/* Logic for a aic3x as connected on a davinci-evm */
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static int evm_aic3x_init(struct snd_soc_codec *codec)
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{
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/* Add davinci-evm specific widgets */
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2008-05-13 19:58:30 +07:00
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snd_soc_dapm_new_controls(codec, aic3x_dapm_widgets,
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ARRAY_SIZE(aic3x_dapm_widgets));
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2008-02-18 17:40:22 +07:00
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/* Set up davinci-evm specific audio path audio_map */
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2008-05-13 19:58:30 +07:00
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snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
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2008-02-18 17:40:22 +07:00
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/* not connected */
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2008-07-07 19:35:17 +07:00
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snd_soc_dapm_disable_pin(codec, "MONO_LOUT");
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snd_soc_dapm_disable_pin(codec, "HPLCOM");
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snd_soc_dapm_disable_pin(codec, "HPRCOM");
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2008-02-18 17:40:22 +07:00
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/* always connected */
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2008-07-07 19:35:17 +07:00
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snd_soc_dapm_enable_pin(codec, "Headphone Jack");
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snd_soc_dapm_enable_pin(codec, "Line Out");
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snd_soc_dapm_enable_pin(codec, "Mic Jack");
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snd_soc_dapm_enable_pin(codec, "Line In");
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2008-02-18 17:40:22 +07:00
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2008-07-07 19:35:17 +07:00
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snd_soc_dapm_sync(codec);
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2008-02-18 17:40:22 +07:00
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return 0;
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}
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/* davinci-evm digital audio interface glue - connects codec <--> CPU */
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static struct snd_soc_dai_link evm_dai = {
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.name = "TLV320AIC3X",
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.stream_name = "AIC3X",
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.cpu_dai = &davinci_i2s_dai,
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.codec_dai = &aic3x_dai,
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.init = evm_aic3x_init,
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.ops = &evm_ops,
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};
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/* davinci-evm audio machine driver */
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2008-11-19 03:50:34 +07:00
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static struct snd_soc_card snd_soc_card_evm = {
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2008-02-18 17:40:22 +07:00
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.name = "DaVinci EVM",
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2008-12-02 23:01:14 +07:00
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.platform = &davinci_soc_platform,
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2008-02-18 17:40:22 +07:00
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.dai_link = &evm_dai,
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.num_links = 1,
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};
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/* evm audio private data */
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static struct aic3x_setup_data evm_aic3x_setup = {
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2008-09-22 19:15:53 +07:00
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.i2c_bus = 0,
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2008-02-18 17:40:22 +07:00
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.i2c_address = 0x1b,
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};
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/* evm audio subsystem */
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static struct snd_soc_device evm_snd_devdata = {
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2008-11-19 03:50:34 +07:00
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.card = &snd_soc_card_evm,
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2008-02-18 17:40:22 +07:00
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.codec_dev = &soc_codec_dev_aic3x,
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.codec_data = &evm_aic3x_setup,
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};
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static struct resource evm_snd_resources[] = {
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{
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.start = DAVINCI_MCBSP_BASE,
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.end = DAVINCI_MCBSP_BASE + SZ_8K - 1,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct evm_snd_platform_data evm_snd_data = {
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.tx_dma_ch = DM644X_DMACH_MCBSP_TX,
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.rx_dma_ch = DM644X_DMACH_MCBSP_RX,
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};
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static struct platform_device *evm_snd_device;
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static int __init evm_init(void)
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{
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int ret;
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evm_snd_device = platform_device_alloc("soc-audio", 0);
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if (!evm_snd_device)
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return -ENOMEM;
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platform_set_drvdata(evm_snd_device, &evm_snd_devdata);
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evm_snd_devdata.dev = &evm_snd_device->dev;
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evm_snd_device->dev.platform_data = &evm_snd_data;
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ret = platform_device_add_resources(evm_snd_device, evm_snd_resources,
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ARRAY_SIZE(evm_snd_resources));
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if (ret) {
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platform_device_put(evm_snd_device);
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return ret;
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}
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ret = platform_device_add(evm_snd_device);
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if (ret)
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platform_device_put(evm_snd_device);
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return ret;
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}
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static void __exit evm_exit(void)
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{
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platform_device_unregister(evm_snd_device);
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}
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module_init(evm_init);
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module_exit(evm_exit);
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MODULE_AUTHOR("Vladimir Barinov");
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MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
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MODULE_LICENSE("GPL");
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