143 lines
3.8 KiB
C
143 lines
3.8 KiB
C
/*
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* File: sound/soc/blackfin/bf5xx-ad1938.c
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* Author: Barry Song <Barry.Song@analog.com>
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*
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* Created: Thur June 4 2009
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* Description: Board driver for ad1938 sound chip
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*
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* Bugs: Enter bugs at http://blackfin.uclinux.org/
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see the file COPYING, or write
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* to the Free Software Foundation, Inc.,
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* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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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/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 <sound/pcm_params.h>
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#include <asm/blackfin.h>
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#include <asm/cacheflush.h>
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#include <asm/irq.h>
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#include <asm/dma.h>
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#include <asm/portmux.h>
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#include "../codecs/ad1938.h"
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#include "bf5xx-sport.h"
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#include "bf5xx-tdm-pcm.h"
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#include "bf5xx-tdm.h"
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static struct snd_soc_card bf5xx_ad1938;
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static int bf5xx_ad1938_startup(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 *cpu_dai = rtd->dai->cpu_dai;
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cpu_dai->private_data = sport_handle;
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return 0;
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}
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static int bf5xx_ad1938_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 *cpu_dai = rtd->dai->cpu_dai;
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struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
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int ret = 0;
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/* set cpu DAI configuration */
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ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A |
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SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_CBM_CFM);
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if (ret < 0)
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return ret;
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/* set codec DAI configuration */
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ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_A |
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SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_CBM_CFM);
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if (ret < 0)
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return ret;
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/* set codec DAI slots, 8 channels, all channels are enabled */
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ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xFF, 8);
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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 bf5xx_ad1938_ops = {
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.startup = bf5xx_ad1938_startup,
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.hw_params = bf5xx_ad1938_hw_params,
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};
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static struct snd_soc_dai_link bf5xx_ad1938_dai = {
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.name = "ad1938",
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.stream_name = "AD1938",
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.cpu_dai = &bf5xx_tdm_dai,
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.codec_dai = &ad1938_dai,
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.ops = &bf5xx_ad1938_ops,
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};
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static struct snd_soc_card bf5xx_ad1938 = {
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.name = "bf5xx_ad1938",
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.platform = &bf5xx_tdm_soc_platform,
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.dai_link = &bf5xx_ad1938_dai,
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.num_links = 1,
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};
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static struct snd_soc_device bf5xx_ad1938_snd_devdata = {
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.card = &bf5xx_ad1938,
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.codec_dev = &soc_codec_dev_ad1938,
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};
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static struct platform_device *bfxx_ad1938_snd_device;
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static int __init bf5xx_ad1938_init(void)
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{
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int ret;
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bfxx_ad1938_snd_device = platform_device_alloc("soc-audio", -1);
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if (!bfxx_ad1938_snd_device)
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return -ENOMEM;
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platform_set_drvdata(bfxx_ad1938_snd_device, &bf5xx_ad1938_snd_devdata);
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bf5xx_ad1938_snd_devdata.dev = &bfxx_ad1938_snd_device->dev;
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ret = platform_device_add(bfxx_ad1938_snd_device);
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if (ret)
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platform_device_put(bfxx_ad1938_snd_device);
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return ret;
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}
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static void __exit bf5xx_ad1938_exit(void)
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{
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platform_device_unregister(bfxx_ad1938_snd_device);
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}
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module_init(bf5xx_ad1938_init);
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module_exit(bf5xx_ad1938_exit);
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/* Module information */
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MODULE_AUTHOR("Barry Song");
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MODULE_DESCRIPTION("ALSA SoC AD1938 board driver");
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MODULE_LICENSE("GPL");
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