120 lines
2.9 KiB
C
120 lines
2.9 KiB
C
/*
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* File: sound/soc/blackfin/bf5xx-ad1836.c
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* Author: Barry Song <Barry.Song@analog.com>
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*
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* Created: Aug 4 2009
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* Description: Board driver for ad1836 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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*/
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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/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/ad1836.h"
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static struct snd_soc_card bf5xx_ad1836;
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static int bf5xx_ad1836_init(struct snd_soc_pcm_runtime *rtd)
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{
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struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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unsigned int channel_map[] = {0, 4, 1, 5, 2, 6, 3, 7};
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int ret = 0;
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/* set cpu DAI channel mapping */
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ret = snd_soc_dai_set_channel_map(cpu_dai, ARRAY_SIZE(channel_map),
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channel_map, ARRAY_SIZE(channel_map), channel_map);
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if (ret < 0)
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return ret;
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ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0xFF, 0xFF, 8, 32);
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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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#define BF5XX_AD1836_DAIFMT (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_IF | \
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SND_SOC_DAIFMT_CBM_CFM)
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static struct snd_soc_dai_link bf5xx_ad1836_dai = {
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.name = "ad1836",
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.stream_name = "AD1836",
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.codec_dai_name = "ad1836-hifi",
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.platform_name = "bfin-i2s-pcm-audio",
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.dai_fmt = BF5XX_AD1836_DAIFMT,
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.init = bf5xx_ad1836_init,
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};
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static struct snd_soc_card bf5xx_ad1836 = {
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.name = "bfin-ad1836",
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.owner = THIS_MODULE,
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.dai_link = &bf5xx_ad1836_dai,
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.num_links = 1,
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};
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static int bf5xx_ad1836_driver_probe(struct platform_device *pdev)
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{
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struct snd_soc_card *card = &bf5xx_ad1836;
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const char **link_name;
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int ret;
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link_name = pdev->dev.platform_data;
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if (!link_name) {
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dev_err(&pdev->dev, "No platform data supplied\n");
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return -EINVAL;
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}
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bf5xx_ad1836_dai.cpu_dai_name = link_name[0];
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bf5xx_ad1836_dai.codec_name = link_name[1];
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card->dev = &pdev->dev;
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platform_set_drvdata(pdev, card);
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ret = snd_soc_register_card(card);
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if (ret)
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dev_err(&pdev->dev, "Failed to register card\n");
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return ret;
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}
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static int bf5xx_ad1836_driver_remove(struct platform_device *pdev)
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{
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struct snd_soc_card *card = platform_get_drvdata(pdev);
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snd_soc_unregister_card(card);
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return 0;
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}
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static struct platform_driver bf5xx_ad1836_driver = {
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.driver = {
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.name = "bfin-snd-ad1836",
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.owner = THIS_MODULE,
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.pm = &snd_soc_pm_ops,
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},
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.probe = bf5xx_ad1836_driver_probe,
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.remove = bf5xx_ad1836_driver_remove,
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};
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module_platform_driver(bf5xx_ad1836_driver);
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/* Module information */
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MODULE_AUTHOR("Barry Song");
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MODULE_DESCRIPTION("ALSA SoC AD1836 board driver");
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MODULE_LICENSE("GPL");
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