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 #include "bf5xx-i2s-pcm.h"
44
45 static struct snd_soc_card bf5xx_ssm2602;
46
bf5xx_ssm2602_dai_init(struct snd_soc_pcm_runtime * rtd)47 static int bf5xx_ssm2602_dai_init(struct snd_soc_pcm_runtime *rtd)
48 {
49 /*
50 * If you are using a crystal source which frequency is not 12MHz
51 * then modify the below case statement with frequency of the crystal.
52 *
53 * If you are using the SPORT to generate clocking then this is
54 * where to do it.
55 */
56 return snd_soc_dai_set_sysclk(rtd->codec_dai, SSM2602_SYSCLK, 12000000,
57 SND_SOC_CLOCK_IN);
58 }
59
60 /* CODEC is master for BCLK and LRC in this configuration. */
61 #define BF5XX_SSM2602_DAIFMT (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | \
62 SND_SOC_DAIFMT_CBM_CFM)
63
64 static struct snd_soc_dai_link bf5xx_ssm2602_dai[] = {
65 {
66 .name = "ssm2602",
67 .stream_name = "SSM2602",
68 .cpu_dai_name = "bfin-i2s.0",
69 .codec_dai_name = "ssm2602-hifi",
70 .platform_name = "bfin-i2s-pcm-audio",
71 .codec_name = "ssm2602.0-001b",
72 .init = bf5xx_ssm2602_dai_init,
73 .dai_fmt = BF5XX_SSM2602_DAIFMT,
74 },
75 {
76 .name = "ssm2602",
77 .stream_name = "SSM2602",
78 .cpu_dai_name = "bfin-i2s.1",
79 .codec_dai_name = "ssm2602-hifi",
80 .platform_name = "bfin-i2s-pcm-audio",
81 .codec_name = "ssm2602.0-001b",
82 .init = bf5xx_ssm2602_dai_init,
83 .dai_fmt = BF5XX_SSM2602_DAIFMT,
84 },
85 };
86
87 static struct snd_soc_card bf5xx_ssm2602 = {
88 .name = "bfin-ssm2602",
89 .owner = THIS_MODULE,
90 .dai_link = &bf5xx_ssm2602_dai[CONFIG_SND_BF5XX_SPORT_NUM],
91 .num_links = 1,
92 };
93
94 static struct platform_device *bf5xx_ssm2602_snd_device;
95
bf5xx_ssm2602_init(void)96 static int __init bf5xx_ssm2602_init(void)
97 {
98 int ret;
99
100 pr_debug("%s enter\n", __func__);
101 bf5xx_ssm2602_snd_device = platform_device_alloc("soc-audio", -1);
102 if (!bf5xx_ssm2602_snd_device)
103 return -ENOMEM;
104
105 platform_set_drvdata(bf5xx_ssm2602_snd_device, &bf5xx_ssm2602);
106 ret = platform_device_add(bf5xx_ssm2602_snd_device);
107
108 if (ret)
109 platform_device_put(bf5xx_ssm2602_snd_device);
110
111 return ret;
112 }
113
bf5xx_ssm2602_exit(void)114 static void __exit bf5xx_ssm2602_exit(void)
115 {
116 pr_debug("%s enter\n", __func__);
117 platform_device_unregister(bf5xx_ssm2602_snd_device);
118 }
119
120 module_init(bf5xx_ssm2602_init);
121 module_exit(bf5xx_ssm2602_exit);
122
123 /* Module information */
124 MODULE_AUTHOR("Cliff Cai");
125 MODULE_DESCRIPTION("ALSA SoC SSM2602 BF527-EZKIT");
126 MODULE_LICENSE("GPL");
127
128