1/*
2 * File:         sound/soc/blackfin/bf5xx-ssm2602.c
3 * Author:       Cliff Cai <Cliff.Cai@analog.com>
4 *
5 * Created:      Tue June 06 2008
6 * Description:  board driver for SSM2602 sound chip
7 *
8 * Modified:
9 *               Copyright 2008 Analog Devices Inc.
10 *
11 * Bugs:         Enter bugs at http://blackfin.uclinux.org/
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, see the file COPYING, or write
25 * to the Free Software Foundation, Inc.,
26 * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
27 */
28
29#include <linux/module.h>
30#include <linux/moduleparam.h>
31#include <linux/device.h>
32
33#include <sound/core.h>
34#include <sound/pcm.h>
35#include <sound/soc.h>
36#include <sound/pcm_params.h>
37
38#include <asm/dma.h>
39#include <asm/portmux.h>
40#include <linux/gpio.h>
41#include "../codecs/ssm2602.h"
42#include "bf5xx-sport.h"
43
44static struct snd_soc_card bf5xx_ssm2602;
45
46static int bf5xx_ssm2602_dai_init(struct snd_soc_pcm_runtime *rtd)
47{
48	/*
49	 * If you are using a crystal source which frequency is not 12MHz
50	 * then modify the below case statement with frequency of the crystal.
51	 *
52	 * If you are using the SPORT to generate clocking then this is
53	 * where to do it.
54	 */
55	return snd_soc_dai_set_sysclk(rtd->codec_dai, SSM2602_SYSCLK, 12000000,
56		SND_SOC_CLOCK_IN);
57}
58
59/* CODEC is master for BCLK and LRC in this configuration. */
60#define BF5XX_SSM2602_DAIFMT (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | \
61				SND_SOC_DAIFMT_CBM_CFM)
62
63static struct snd_soc_dai_link bf5xx_ssm2602_dai[] = {
64	{
65		.name = "ssm2602",
66		.stream_name = "SSM2602",
67		.cpu_dai_name = "bfin-i2s.0",
68		.codec_dai_name = "ssm2602-hifi",
69		.platform_name = "bfin-i2s-pcm-audio",
70		.codec_name = "ssm2602.0-001b",
71		.init = bf5xx_ssm2602_dai_init,
72		.dai_fmt = BF5XX_SSM2602_DAIFMT,
73	},
74	{
75		.name = "ssm2602",
76		.stream_name = "SSM2602",
77		.cpu_dai_name = "bfin-i2s.1",
78		.codec_dai_name = "ssm2602-hifi",
79		.platform_name = "bfin-i2s-pcm-audio",
80		.codec_name = "ssm2602.0-001b",
81		.init = bf5xx_ssm2602_dai_init,
82		.dai_fmt = BF5XX_SSM2602_DAIFMT,
83	},
84};
85
86static struct snd_soc_card bf5xx_ssm2602 = {
87	.name = "bfin-ssm2602",
88	.owner = THIS_MODULE,
89	.dai_link = &bf5xx_ssm2602_dai[CONFIG_SND_BF5XX_SPORT_NUM],
90	.num_links = 1,
91};
92
93static struct platform_device *bf5xx_ssm2602_snd_device;
94
95static int __init bf5xx_ssm2602_init(void)
96{
97	int ret;
98
99	pr_debug("%s enter\n", __func__);
100	bf5xx_ssm2602_snd_device = platform_device_alloc("soc-audio", -1);
101	if (!bf5xx_ssm2602_snd_device)
102		return -ENOMEM;
103
104	platform_set_drvdata(bf5xx_ssm2602_snd_device, &bf5xx_ssm2602);
105	ret = platform_device_add(bf5xx_ssm2602_snd_device);
106
107	if (ret)
108		platform_device_put(bf5xx_ssm2602_snd_device);
109
110	return ret;
111}
112
113static void __exit bf5xx_ssm2602_exit(void)
114{
115	pr_debug("%s enter\n", __func__);
116	platform_device_unregister(bf5xx_ssm2602_snd_device);
117}
118
119module_init(bf5xx_ssm2602_init);
120module_exit(bf5xx_ssm2602_exit);
121
122/* Module information */
123MODULE_AUTHOR("Cliff Cai");
124MODULE_DESCRIPTION("ALSA SoC SSM2602 BF527-EZKIT");
125MODULE_LICENSE("GPL");
126
127