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Cliff Caia7e7f542008-09-05 18:21:41 +08001/*
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>
Cliff Caia7e7f542008-09-05 18:21:41 +080036#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"
Cliff Caia7e7f542008-09-05 18:21:41 +080044
Mark Brown87506542008-11-18 20:50:34 +000045static struct snd_soc_card bf5xx_ssm2602;
Cliff Caia7e7f542008-09-05 18:21:41 +080046
47static int bf5xx_ssm2602_startup(struct snd_pcm_substream *substream)
48{
49 struct snd_soc_pcm_runtime *rtd = substream->private_data;
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000050 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
Cliff Caia7e7f542008-09-05 18:21:41 +080051
52 pr_debug("%s enter\n", __func__);
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000053 snd_soc_dai_set_drvdata(cpu_dai, sport_handle);
Cliff Caia7e7f542008-09-05 18:21:41 +080054 return 0;
55}
56
57static int bf5xx_ssm2602_hw_params(struct snd_pcm_substream *substream,
58 struct snd_pcm_hw_params *params)
59{
60 struct snd_soc_pcm_runtime *rtd = substream->private_data;
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000061 struct snd_soc_dai *codec_dai = rtd->codec_dai;
62 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
Cliff Caia7e7f542008-09-05 18:21:41 +080063 unsigned int clk = 0;
64 int ret = 0;
65
66 pr_debug("%s rate %d format %x\n", __func__, params_rate(params),
67 params_format(params));
68 /*
69 * If you are using a crystal source which frequency is not 12MHz
70 * then modify the below case statement with frequency of the crystal.
71 *
72 * If you are using the SPORT to generate clocking then this is
73 * where to do it.
74 */
75
76 switch (params_rate(params)) {
77 case 8000:
78 case 16000:
79 case 48000:
80 case 96000:
81 case 11025:
82 case 22050:
83 case 44100:
84 clk = 12000000;
85 break;
86 }
87
88 /*
89 * CODEC is master for BCLK and LRC in this configuration.
90 */
91
92 /* set codec DAI configuration */
Mark Brown9b0db7e2008-11-18 22:17:49 +000093 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
Cliff Caia7e7f542008-09-05 18:21:41 +080094 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
95 if (ret < 0)
96 return ret;
97 /* set cpu DAI configuration */
Mark Brown9b0db7e2008-11-18 22:17:49 +000098 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
Cliff Caia7e7f542008-09-05 18:21:41 +080099 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
100 if (ret < 0)
101 return ret;
102
Mark Brown9b0db7e2008-11-18 22:17:49 +0000103 ret = snd_soc_dai_set_sysclk(codec_dai, SSM2602_SYSCLK, clk,
Cliff Caia7e7f542008-09-05 18:21:41 +0800104 SND_SOC_CLOCK_IN);
105 if (ret < 0)
106 return ret;
107
108 return 0;
109}
110
111static struct snd_soc_ops bf5xx_ssm2602_ops = {
112 .startup = bf5xx_ssm2602_startup,
113 .hw_params = bf5xx_ssm2602_hw_params,
114};
115
116static struct snd_soc_dai_link bf5xx_ssm2602_dai = {
117 .name = "ssm2602",
118 .stream_name = "SSM2602",
Mike Frysingerbfe4ee02011-03-28 01:45:09 -0400119 .cpu_dai_name = "bfin-i2s",
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000120 .codec_dai_name = "ssm2602-hifi",
Mike Frysingerbfe4ee02011-03-28 01:45:09 -0400121 .platform_name = "bfin-i2s-pcm-audio",
Mike Frysingerc8ad38b2011-03-28 01:45:08 -0400122 .codec_name = "ssm2602.0-001b",
Cliff Caia7e7f542008-09-05 18:21:41 +0800123 .ops = &bf5xx_ssm2602_ops,
124};
125
Mark Brown87506542008-11-18 20:50:34 +0000126static struct snd_soc_card bf5xx_ssm2602 = {
Mike Frysingerbfe4ee02011-03-28 01:45:09 -0400127 .name = "bfin-ssm2602",
Cliff Caia7e7f542008-09-05 18:21:41 +0800128 .dai_link = &bf5xx_ssm2602_dai,
129 .num_links = 1,
130};
131
Barry Songf2741432009-06-20 11:29:56 -0400132static struct platform_device *bf5xx_ssm2602_snd_device;
Cliff Caia7e7f542008-09-05 18:21:41 +0800133
134static int __init bf5xx_ssm2602_init(void)
135{
136 int ret;
137
138 pr_debug("%s enter\n", __func__);
Barry Songf2741432009-06-20 11:29:56 -0400139 bf5xx_ssm2602_snd_device = platform_device_alloc("soc-audio", -1);
140 if (!bf5xx_ssm2602_snd_device)
Cliff Caia7e7f542008-09-05 18:21:41 +0800141 return -ENOMEM;
142
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000143 platform_set_drvdata(bf5xx_ssm2602_snd_device, &bf5xx_ssm2602);
Barry Songf2741432009-06-20 11:29:56 -0400144 ret = platform_device_add(bf5xx_ssm2602_snd_device);
Cliff Caia7e7f542008-09-05 18:21:41 +0800145
146 if (ret)
Barry Songf2741432009-06-20 11:29:56 -0400147 platform_device_put(bf5xx_ssm2602_snd_device);
Cliff Caia7e7f542008-09-05 18:21:41 +0800148
149 return ret;
150}
151
152static void __exit bf5xx_ssm2602_exit(void)
153{
154 pr_debug("%s enter\n", __func__);
Barry Songf2741432009-06-20 11:29:56 -0400155 platform_device_unregister(bf5xx_ssm2602_snd_device);
Cliff Caia7e7f542008-09-05 18:21:41 +0800156}
157
158module_init(bf5xx_ssm2602_init);
159module_exit(bf5xx_ssm2602_exit);
160
161/* Module information */
162MODULE_AUTHOR("Cliff Cai");
163MODULE_DESCRIPTION("ALSA SoC SSM2602 BF527-EZKIT");
164MODULE_LICENSE("GPL");
165