diff options
Diffstat (limited to 'kernel/sound/soc/blackfin/bf5xx-ad1836.c')
| -rw-r--r-- | kernel/sound/soc/blackfin/bf5xx-ad1836.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/kernel/sound/soc/blackfin/bf5xx-ad1836.c b/kernel/sound/soc/blackfin/bf5xx-ad1836.c new file mode 100644 index 000000000..5bf1501e5 --- /dev/null +++ b/kernel/sound/soc/blackfin/bf5xx-ad1836.c @@ -0,0 +1,118 @@ +/* + * File: sound/soc/blackfin/bf5xx-ad1836.c + * Author: Barry Song <Barry.Song@analog.com> + * + * Created: Aug 4 2009 + * Description: Board driver for ad1836 sound chip + * + * Bugs: Enter bugs at http://blackfin.uclinux.org/ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/device.h> +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/soc.h> +#include <sound/pcm_params.h> + +#include <asm/blackfin.h> +#include <asm/cacheflush.h> +#include <asm/irq.h> +#include <asm/dma.h> +#include <asm/portmux.h> + +#include "../codecs/ad1836.h" + +static struct snd_soc_card bf5xx_ad1836; + +static int bf5xx_ad1836_init(struct snd_soc_pcm_runtime *rtd) +{ + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + unsigned int channel_map[] = {0, 4, 1, 5, 2, 6, 3, 7}; + int ret = 0; + + /* set cpu DAI channel mapping */ + ret = snd_soc_dai_set_channel_map(cpu_dai, ARRAY_SIZE(channel_map), + channel_map, ARRAY_SIZE(channel_map), channel_map); + if (ret < 0) + return ret; + + ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0xFF, 0xFF, 8, 32); + if (ret < 0) + return ret; + + return 0; +} + +#define BF5XX_AD1836_DAIFMT (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_IF | \ + SND_SOC_DAIFMT_CBM_CFM) + +static struct snd_soc_dai_link bf5xx_ad1836_dai = { + .name = "ad1836", + .stream_name = "AD1836", + .codec_dai_name = "ad1836-hifi", + .platform_name = "bfin-i2s-pcm-audio", + .dai_fmt = BF5XX_AD1836_DAIFMT, + .init = bf5xx_ad1836_init, +}; + +static struct snd_soc_card bf5xx_ad1836 = { + .name = "bfin-ad1836", + .owner = THIS_MODULE, + .dai_link = &bf5xx_ad1836_dai, + .num_links = 1, +}; + +static int bf5xx_ad1836_driver_probe(struct platform_device *pdev) +{ + struct snd_soc_card *card = &bf5xx_ad1836; + const char **link_name; + int ret; + + link_name = pdev->dev.platform_data; + if (!link_name) { + dev_err(&pdev->dev, "No platform data supplied\n"); + return -EINVAL; + } + bf5xx_ad1836_dai.cpu_dai_name = link_name[0]; + bf5xx_ad1836_dai.codec_name = link_name[1]; + + card->dev = &pdev->dev; + platform_set_drvdata(pdev, card); + + ret = snd_soc_register_card(card); + if (ret) + dev_err(&pdev->dev, "Failed to register card\n"); + return ret; +} + +static int bf5xx_ad1836_driver_remove(struct platform_device *pdev) +{ + struct snd_soc_card *card = platform_get_drvdata(pdev); + + snd_soc_unregister_card(card); + return 0; +} + +static struct platform_driver bf5xx_ad1836_driver = { + .driver = { + .name = "bfin-snd-ad1836", + .pm = &snd_soc_pm_ops, + }, + .probe = bf5xx_ad1836_driver_probe, + .remove = bf5xx_ad1836_driver_remove, +}; +module_platform_driver(bf5xx_ad1836_driver); + +/* Module information */ +MODULE_AUTHOR("Barry Song"); +MODULE_DESCRIPTION("ALSA SoC AD1836 board driver"); +MODULE_LICENSE("GPL"); + |