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/soc-dapm.h>
24 #include <sound/pcm_params.h>
26 #include <asm/blackfin.h>
27 #include <asm/cacheflush.h>
30 #include <asm/portmux.h>
32 #include "../codecs/ad1836.h"
33 #include "bf5xx-sport.h"
35 #include "bf5xx-tdm-pcm.h"
36 #include "bf5xx-tdm.h"
38 static struct snd_soc_card bf5xx_ad1836
;
40 static int bf5xx_ad1836_startup(struct snd_pcm_substream
*substream
)
42 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
43 struct snd_soc_dai
*cpu_dai
= rtd
->dai
->cpu_dai
;
45 cpu_dai
->private_data
= sport_handle
;
49 static int bf5xx_ad1836_hw_params(struct snd_pcm_substream
*substream
,
50 struct snd_pcm_hw_params
*params
)
52 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
53 struct snd_soc_dai
*cpu_dai
= rtd
->dai
->cpu_dai
;
54 struct snd_soc_dai
*codec_dai
= rtd
->dai
->codec_dai
;
56 /* set cpu DAI configuration */
57 ret
= snd_soc_dai_set_fmt(cpu_dai
, SND_SOC_DAIFMT_DSP_A
|
58 SND_SOC_DAIFMT_IB_IF
| SND_SOC_DAIFMT_CBM_CFM
);
62 /* set codec DAI configuration */
63 ret
= snd_soc_dai_set_fmt(codec_dai
, SND_SOC_DAIFMT_DSP_A
|
64 SND_SOC_DAIFMT_IB_IF
| SND_SOC_DAIFMT_CBM_CFM
);
71 static struct snd_soc_ops bf5xx_ad1836_ops
= {
72 .startup
= bf5xx_ad1836_startup
,
73 .hw_params
= bf5xx_ad1836_hw_params
,
76 static struct snd_soc_dai_link bf5xx_ad1836_dai
= {
78 .stream_name
= "AD1836",
79 .cpu_dai
= &bf5xx_tdm_dai
,
80 .codec_dai
= &ad1836_dai
,
81 .ops
= &bf5xx_ad1836_ops
,
84 static struct snd_soc_card bf5xx_ad1836
= {
85 .name
= "bf5xx_ad1836",
86 .platform
= &bf5xx_tdm_soc_platform
,
87 .dai_link
= &bf5xx_ad1836_dai
,
91 static struct snd_soc_device bf5xx_ad1836_snd_devdata
= {
92 .card
= &bf5xx_ad1836
,
93 .codec_dev
= &soc_codec_dev_ad1836
,
96 static struct platform_device
*bfxx_ad1836_snd_device
;
98 static int __init
bf5xx_ad1836_init(void)
102 bfxx_ad1836_snd_device
= platform_device_alloc("soc-audio", -1);
103 if (!bfxx_ad1836_snd_device
)
106 platform_set_drvdata(bfxx_ad1836_snd_device
, &bf5xx_ad1836_snd_devdata
);
107 bf5xx_ad1836_snd_devdata
.dev
= &bfxx_ad1836_snd_device
->dev
;
108 ret
= platform_device_add(bfxx_ad1836_snd_device
);
111 platform_device_put(bfxx_ad1836_snd_device
);
116 static void __exit
bf5xx_ad1836_exit(void)
118 platform_device_unregister(bfxx_ad1836_snd_device
);
121 module_init(bf5xx_ad1836_init
);
122 module_exit(bf5xx_ad1836_exit
);
124 /* Module information */
125 MODULE_AUTHOR("Barry Song");
126 MODULE_DESCRIPTION("ALSA SoC AD1836 board driver");
127 MODULE_LICENSE("GPL");