Version:  2.0.40 2.2.26 2.4.37 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17

Linux/sound/soc/blackfin/bf5xx-ad1836.c

  1 /*
  2  * File:         sound/soc/blackfin/bf5xx-ad1836.c
  3  * Author:       Barry Song <Barry.Song@analog.com>
  4  *
  5  * Created:      Aug 4 2009
  6  * Description:  Board driver for ad1836 sound chip
  7  *
  8  * Bugs:         Enter bugs at http://blackfin.uclinux.org/
  9  *
 10  * This program is free software; you can redistribute it and/or modify
 11  * it under the terms of the GNU General Public License as published by
 12  * the Free Software Foundation; either version 2 of the License, or
 13  * (at your option) any later version.
 14  *
 15  */
 16 
 17 #include <linux/module.h>
 18 #include <linux/moduleparam.h>
 19 #include <linux/device.h>
 20 #include <sound/core.h>
 21 #include <sound/pcm.h>
 22 #include <sound/soc.h>
 23 #include <sound/pcm_params.h>
 24 
 25 #include <asm/blackfin.h>
 26 #include <asm/cacheflush.h>
 27 #include <asm/irq.h>
 28 #include <asm/dma.h>
 29 #include <asm/portmux.h>
 30 
 31 #include "../codecs/ad1836.h"
 32 
 33 static struct snd_soc_card bf5xx_ad1836;
 34 
 35 static int bf5xx_ad1836_init(struct snd_soc_pcm_runtime *rtd)
 36 {
 37         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 38         unsigned int channel_map[] = {0, 4, 1, 5, 2, 6, 3, 7};
 39         int ret = 0;
 40 
 41         /* set cpu DAI channel mapping */
 42         ret = snd_soc_dai_set_channel_map(cpu_dai, ARRAY_SIZE(channel_map),
 43                 channel_map, ARRAY_SIZE(channel_map), channel_map);
 44         if (ret < 0)
 45                 return ret;
 46 
 47         ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0xFF, 0xFF, 8, 32);
 48         if (ret < 0)
 49                 return ret;
 50 
 51         return 0;
 52 }
 53 
 54 #define BF5XX_AD1836_DAIFMT (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_IF | \
 55                                 SND_SOC_DAIFMT_CBM_CFM)
 56 
 57 static struct snd_soc_dai_link bf5xx_ad1836_dai = {
 58         .name = "ad1836",
 59         .stream_name = "AD1836",
 60         .codec_dai_name = "ad1836-hifi",
 61         .platform_name = "bfin-i2s-pcm-audio",
 62         .dai_fmt = BF5XX_AD1836_DAIFMT,
 63         .init = bf5xx_ad1836_init,
 64 };
 65 
 66 static struct snd_soc_card bf5xx_ad1836 = {
 67         .name = "bfin-ad1836",
 68         .owner = THIS_MODULE,
 69         .dai_link = &bf5xx_ad1836_dai,
 70         .num_links = 1,
 71 };
 72 
 73 static int bf5xx_ad1836_driver_probe(struct platform_device *pdev)
 74 {
 75         struct snd_soc_card *card = &bf5xx_ad1836;
 76         const char **link_name;
 77         int ret;
 78 
 79         link_name = pdev->dev.platform_data;
 80         if (!link_name) {
 81                 dev_err(&pdev->dev, "No platform data supplied\n");
 82                 return -EINVAL;
 83         }
 84         bf5xx_ad1836_dai.cpu_dai_name = link_name[0];
 85         bf5xx_ad1836_dai.codec_name = link_name[1];
 86 
 87         card->dev = &pdev->dev;
 88         platform_set_drvdata(pdev, card);
 89 
 90         ret = snd_soc_register_card(card);
 91         if (ret)
 92                 dev_err(&pdev->dev, "Failed to register card\n");
 93         return ret;
 94 }
 95 
 96 static int bf5xx_ad1836_driver_remove(struct platform_device *pdev)
 97 {
 98         struct snd_soc_card *card = platform_get_drvdata(pdev);
 99 
100         snd_soc_unregister_card(card);
101         return 0;
102 }
103 
104 static struct platform_driver bf5xx_ad1836_driver = {
105         .driver = {
106                 .name = "bfin-snd-ad1836",
107                 .owner = THIS_MODULE,
108                 .pm = &snd_soc_pm_ops,
109         },
110         .probe = bf5xx_ad1836_driver_probe,
111         .remove = bf5xx_ad1836_driver_remove,
112 };
113 module_platform_driver(bf5xx_ad1836_driver);
114 
115 /* Module information */
116 MODULE_AUTHOR("Barry Song");
117 MODULE_DESCRIPTION("ALSA SoC AD1836 board driver");
118 MODULE_LICENSE("GPL");
119 
120 

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us