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f492ec9f02
This is a build fix, resyncing the DaVinci EVM ASoC board code with the version in the DaVinci tree. That resync includes support for the DM355 EVM, although that board isn't yet in mainline. (NOTE: also includes a bugfix to the platform_add_resources call, recently sent by Chaithrika U S <chaithrika@ti.com> but not yet merged into the DaVinci tree.) Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
257 lines
6.6 KiB
C
257 lines
6.6 KiB
C
/*
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* ASoC driver for TI DAVINCI EVM platform
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*
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* Author: Vladimir Barinov, <vbarinov@embeddedalley.com>
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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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#include <asm/mach-types.h>
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#include <mach/asp.h>
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#include <mach/edma.h>
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#include <mach/mux.h>
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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 AUDIO_FORMAT (SND_SOC_DAIFMT_DSP_B | \
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SND_SOC_DAIFMT_CBM_CFM | SND_SOC_DAIFMT_IB_NF)
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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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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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int ret = 0;
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unsigned sysclk;
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/* ASP1 on DM355 EVM is clocked by an external oscillator */
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if (machine_is_davinci_dm355_evm())
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sysclk = 27000000;
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/* ASP0 in DM6446 EVM is clocked by U55, as configured by
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* board-dm644x-evm.c using GPIOs from U18. There are six
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* options; here we "know" we use a 48 KHz sample rate.
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*/
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else if (machine_is_davinci_evm())
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sysclk = 12288000;
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else
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return -EINVAL;
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/* set codec DAI configuration */
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ret = snd_soc_dai_set_fmt(codec_dai, AUDIO_FORMAT);
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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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ret = snd_soc_dai_set_fmt(cpu_dai, AUDIO_FORMAT);
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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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ret = snd_soc_dai_set_sysclk(codec_dai, 0, sysclk, 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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static const struct snd_soc_dapm_route audio_map[] = {
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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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snd_soc_dapm_new_controls(codec, aic3x_dapm_widgets,
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ARRAY_SIZE(aic3x_dapm_widgets));
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/* Set up davinci-evm specific audio path audio_map */
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snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
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/* not connected */
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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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/* always connected */
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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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snd_soc_dapm_sync(codec);
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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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static struct snd_soc_card snd_soc_card_evm = {
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.name = "DaVinci EVM",
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.platform = &davinci_soc_platform,
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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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.i2c_bus = 1,
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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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.card = &snd_soc_card_evm,
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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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/* DM6446 EVM uses ASP0; line-out is a pair of RCA jacks */
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static struct resource evm_snd_resources[] = {
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{
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.start = DAVINCI_ASP0_BASE,
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.end = DAVINCI_ASP0_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 = DAVINCI_DMA_ASP0_TX,
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.rx_dma_ch = DAVINCI_DMA_ASP0_RX,
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};
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/* DM335 EVM uses ASP1; line-out is a stereo mini-jack */
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static struct resource dm335evm_snd_resources[] = {
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{
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.start = DAVINCI_ASP1_BASE,
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.end = DAVINCI_ASP1_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 dm335evm_snd_data = {
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.tx_dma_ch = DAVINCI_DMA_ASP1_TX,
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.rx_dma_ch = DAVINCI_DMA_ASP1_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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struct resource *resources;
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unsigned num_resources;
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struct evm_snd_platform_data *data;
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int index;
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int ret;
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if (machine_is_davinci_evm()) {
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davinci_cfg_reg(DM644X_MCBSP);
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resources = evm_snd_resources;
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num_resources = ARRAY_SIZE(evm_snd_resources);
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data = &evm_snd_data;
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index = 0;
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} else if (machine_is_davinci_dm355_evm()) {
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/* we don't use ASP1 IRQs, or we'd need to mux them ... */
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davinci_cfg_reg(DM355_EVT8_ASP1_TX);
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davinci_cfg_reg(DM355_EVT9_ASP1_RX);
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resources = dm335evm_snd_resources;
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num_resources = ARRAY_SIZE(dm335evm_snd_resources);
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data = &dm335evm_snd_data;
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index = 1;
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} else
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return -EINVAL;
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evm_snd_device = platform_device_alloc("soc-audio", index);
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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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platform_device_add_data(evm_snd_device, data, sizeof(*data));
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ret = platform_device_add_resources(evm_snd_device, resources,
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num_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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