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
44 static struct snd_soc_card bf5xx_ssm2602;
45
bf5xx_ssm2602_dai_init(struct snd_soc_pcm_runtime * rtd)46 static 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
63 static 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
86 static 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
93 static struct platform_device *bf5xx_ssm2602_snd_device;
94
bf5xx_ssm2602_init(void)95 static 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
bf5xx_ssm2602_exit(void)113 static void __exit bf5xx_ssm2602_exit(void)
114 {
115 pr_debug("%s enter\n", __func__);
116 platform_device_unregister(bf5xx_ssm2602_snd_device);
117 }
118
119 module_init(bf5xx_ssm2602_init);
120 module_exit(bf5xx_ssm2602_exit);
121
122 /* Module information */
123 MODULE_AUTHOR("Cliff Cai");
124 MODULE_DESCRIPTION("ALSA SoC SSM2602 BF527-EZKIT");
125 MODULE_LICENSE("GPL");
126
127