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
33static struct snd_soc_card bf5xx_ad1836;
34
35static 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
57static 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
66static 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
73static 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
96static 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
104static struct platform_driver bf5xx_ad1836_driver = {
105	.driver = {
106		.name = "bfin-snd-ad1836",
107		.pm = &snd_soc_pm_ops,
108	},
109	.probe = bf5xx_ad1836_driver_probe,
110	.remove = bf5xx_ad1836_driver_remove,
111};
112module_platform_driver(bf5xx_ad1836_driver);
113
114/* Module information */
115MODULE_AUTHOR("Barry Song");
116MODULE_DESCRIPTION("ALSA SoC AD1836 board driver");
117MODULE_LICENSE("GPL");
118
119