2 * File: sound/soc/blackfin/bf5xx-ad1836.c
3 * Author: Barry Song <Barry.Song@analog.com>
6 * Description: Board driver for ad1836 sound chip
8 * Bugs: Enter bugs at http://blackfin.uclinux.org/
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.
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>
25 #include <asm/blackfin.h>
26 #include <asm/cacheflush.h>
29 #include <asm/portmux.h>
31 #include "../codecs/ad1836.h"
33 #include "bf5xx-tdm-pcm.h"
34 #include "bf5xx-tdm.h"
36 static struct snd_soc_card bf5xx_ad1836;
38 static int bf5xx_ad1836_hw_params(struct snd_pcm_substream *substream,
39 struct snd_pcm_hw_params *params)
41 struct snd_soc_pcm_runtime *rtd = substream->private_data;
42 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
43 unsigned int channel_map[] = {0, 4, 1, 5, 2, 6, 3, 7};
46 /* set cpu DAI channel mapping */
47 ret = snd_soc_dai_set_channel_map(cpu_dai, ARRAY_SIZE(channel_map),
48 channel_map, ARRAY_SIZE(channel_map), channel_map);
55 static struct snd_soc_ops bf5xx_ad1836_ops = {
56 .hw_params = bf5xx_ad1836_hw_params,
59 #define BF5XX_AD1836_DAIFMT (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_IF | \
60 SND_SOC_DAIFMT_CBM_CFM)
62 static struct snd_soc_dai_link bf5xx_ad1836_dai = {
64 .stream_name = "AD1836",
65 .codec_dai_name = "ad1836-hifi",
66 .platform_name = "bfin-tdm-pcm-audio",
67 .ops = &bf5xx_ad1836_ops,
68 .dai_fmt = BF5XX_AD1836_DAIFMT,
71 static struct snd_soc_card bf5xx_ad1836 = {
72 .name = "bfin-ad1836",
74 .dai_link = &bf5xx_ad1836_dai,
78 static int bf5xx_ad1836_driver_probe(struct platform_device *pdev)
80 struct snd_soc_card *card = &bf5xx_ad1836;
81 const char **link_name;
84 link_name = pdev->dev.platform_data;
86 dev_err(&pdev->dev, "No platform data supplied\n");
89 bf5xx_ad1836_dai.cpu_dai_name = link_name[0];
90 bf5xx_ad1836_dai.codec_name = link_name[1];
92 card->dev = &pdev->dev;
93 platform_set_drvdata(pdev, card);
95 ret = snd_soc_register_card(card);
97 dev_err(&pdev->dev, "Failed to register card\n");
101 static int bf5xx_ad1836_driver_remove(struct platform_device *pdev)
103 struct snd_soc_card *card = platform_get_drvdata(pdev);
105 snd_soc_unregister_card(card);
109 static struct platform_driver bf5xx_ad1836_driver = {
111 .name = "bfin-snd-ad1836",
112 .owner = THIS_MODULE,
113 .pm = &snd_soc_pm_ops,
115 .probe = bf5xx_ad1836_driver_probe,
116 .remove = bf5xx_ad1836_driver_remove,
118 module_platform_driver(bf5xx_ad1836_driver);
120 /* Module information */
121 MODULE_AUTHOR("Barry Song");
122 MODULE_DESCRIPTION("ALSA SoC AD1836 board driver");
123 MODULE_LICENSE("GPL");