1/*
2 * File:         sound/soc/blackfin/bf5xx-ad193x.c
3 * Author:       Barry Song <Barry.Song@analog.com>
4 *
5 * Created:      Thur June 4 2009
6 * Description:  Board driver for ad193x 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 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
24 */
25
26#include <linux/module.h>
27#include <linux/moduleparam.h>
28#include <linux/device.h>
29#include <sound/core.h>
30#include <sound/pcm.h>
31#include <sound/soc.h>
32#include <sound/pcm_params.h>
33
34#include <asm/blackfin.h>
35#include <asm/cacheflush.h>
36#include <asm/irq.h>
37#include <asm/dma.h>
38#include <asm/portmux.h>
39
40#include "../codecs/ad193x.h"
41
42static struct snd_soc_card bf5xx_ad193x;
43
44static int bf5xx_ad193x_link_init(struct snd_soc_pcm_runtime *rtd)
45{
46	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
47	struct snd_soc_dai *codec_dai = rtd->codec_dai;
48	int ret;
49
50	/* set the codec system clock for DAC and ADC */
51	ret = snd_soc_dai_set_sysclk(codec_dai, 0, 24576000, SND_SOC_CLOCK_IN);
52	if (ret < 0)
53		return ret;
54
55	/* set codec DAI slots, 8 channels, all channels are enabled */
56	ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xFF, 0xFF, 8, 32);
57	if (ret < 0)
58		return ret;
59
60	ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0xFF, 0xFF, 8, 32);
61	if (ret < 0)
62		return ret;
63
64	return 0;
65}
66
67#define BF5XX_AD193X_DAIFMT (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_IF | \
68				SND_SOC_DAIFMT_CBM_CFM)
69
70static struct snd_soc_dai_link bf5xx_ad193x_dai[] = {
71	{
72		.name = "ad193x",
73		.stream_name = "AD193X",
74		.cpu_dai_name = "bfin-i2s.0",
75		.codec_dai_name ="ad193x-hifi",
76		.platform_name = "bfin-i2s-pcm-audio",
77		.codec_name = "spi0.5",
78		.dai_fmt = BF5XX_AD193X_DAIFMT,
79		.init = bf5xx_ad193x_link_init,
80	},
81	{
82		.name = "ad193x",
83		.stream_name = "AD193X",
84		.cpu_dai_name = "bfin-i2s.1",
85		.codec_dai_name ="ad193x-hifi",
86		.platform_name = "bfin-i2s-pcm-audio",
87		.codec_name = "spi0.5",
88		.dai_fmt = BF5XX_AD193X_DAIFMT,
89		.init = bf5xx_ad193x_link_init,
90	},
91};
92
93static struct snd_soc_card bf5xx_ad193x = {
94	.name = "bfin-ad193x",
95	.owner = THIS_MODULE,
96	.dai_link = &bf5xx_ad193x_dai[CONFIG_SND_BF5XX_SPORT_NUM],
97	.num_links = 1,
98};
99
100static struct platform_device *bfxx_ad193x_snd_device;
101
102static int __init bf5xx_ad193x_init(void)
103{
104	int ret;
105
106	bfxx_ad193x_snd_device = platform_device_alloc("soc-audio", -1);
107	if (!bfxx_ad193x_snd_device)
108		return -ENOMEM;
109
110	platform_set_drvdata(bfxx_ad193x_snd_device, &bf5xx_ad193x);
111	ret = platform_device_add(bfxx_ad193x_snd_device);
112
113	if (ret)
114		platform_device_put(bfxx_ad193x_snd_device);
115
116	return ret;
117}
118
119static void __exit bf5xx_ad193x_exit(void)
120{
121	platform_device_unregister(bfxx_ad193x_snd_device);
122}
123
124module_init(bf5xx_ad193x_init);
125module_exit(bf5xx_ad193x_exit);
126
127/* Module information */
128MODULE_AUTHOR("Barry Song");
129MODULE_DESCRIPTION("ALSA SoC AD193X board driver");
130MODULE_LICENSE("GPL");
131
132