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a7e7f54f CC |
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> | |
a7e7f54f CC |
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" | |
a7e7f54f | 44 | |
87506549 | 45 | static struct snd_soc_card bf5xx_ssm2602; |
a7e7f54f | 46 | |
a7e7f54f CC |
47 | static int bf5xx_ssm2602_hw_params(struct snd_pcm_substream *substream, |
48 | struct snd_pcm_hw_params *params) | |
49 | { | |
50 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad LG |
51 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
52 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
a7e7f54f CC |
53 | unsigned int clk = 0; |
54 | int ret = 0; | |
55 | ||
56 | pr_debug("%s rate %d format %x\n", __func__, params_rate(params), | |
57 | params_format(params)); | |
58 | /* | |
59 | * If you are using a crystal source which frequency is not 12MHz | |
60 | * then modify the below case statement with frequency of the crystal. | |
61 | * | |
62 | * If you are using the SPORT to generate clocking then this is | |
63 | * where to do it. | |
64 | */ | |
65 | ||
66 | switch (params_rate(params)) { | |
67 | case 8000: | |
68 | case 16000: | |
69 | case 48000: | |
70 | case 96000: | |
71 | case 11025: | |
72 | case 22050: | |
73 | case 44100: | |
74 | clk = 12000000; | |
75 | break; | |
76 | } | |
77 | ||
78 | /* | |
79 | * CODEC is master for BCLK and LRC in this configuration. | |
80 | */ | |
81 | ||
82 | /* set codec DAI configuration */ | |
9b0db7e7 | 83 | ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | |
a7e7f54f CC |
84 | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM); |
85 | if (ret < 0) | |
86 | return ret; | |
87 | /* set cpu DAI configuration */ | |
9b0db7e7 | 88 | ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | |
a7e7f54f CC |
89 | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM); |
90 | if (ret < 0) | |
91 | return ret; | |
92 | ||
9b0db7e7 | 93 | ret = snd_soc_dai_set_sysclk(codec_dai, SSM2602_SYSCLK, clk, |
a7e7f54f CC |
94 | SND_SOC_CLOCK_IN); |
95 | if (ret < 0) | |
96 | return ret; | |
97 | ||
98 | return 0; | |
99 | } | |
100 | ||
101 | static struct snd_soc_ops bf5xx_ssm2602_ops = { | |
a7e7f54f CC |
102 | .hw_params = bf5xx_ssm2602_hw_params, |
103 | }; | |
104 | ||
2c66cb99 BS |
105 | static struct snd_soc_dai_link bf5xx_ssm2602_dai[] = { |
106 | { | |
107 | .name = "ssm2602", | |
108 | .stream_name = "SSM2602", | |
109 | .cpu_dai_name = "bfin-i2s.0", | |
110 | .codec_dai_name = "ssm2602-hifi", | |
111 | .platform_name = "bfin-i2s-pcm-audio", | |
112 | .codec_name = "ssm2602.0-001b", | |
113 | .ops = &bf5xx_ssm2602_ops, | |
114 | }, | |
115 | { | |
116 | .name = "ssm2602", | |
117 | .stream_name = "SSM2602", | |
118 | .cpu_dai_name = "bfin-i2s.1", | |
119 | .codec_dai_name = "ssm2602-hifi", | |
120 | .platform_name = "bfin-i2s-pcm-audio", | |
121 | .codec_name = "ssm2602.0-001b", | |
122 | .ops = &bf5xx_ssm2602_ops, | |
123 | }, | |
a7e7f54f CC |
124 | }; |
125 | ||
87506549 | 126 | static struct snd_soc_card bf5xx_ssm2602 = { |
bfe4ee0a | 127 | .name = "bfin-ssm2602", |
2c66cb99 | 128 | .dai_link = &bf5xx_ssm2602_dai[CONFIG_SND_BF5XX_SPORT_NUM], |
a7e7f54f CC |
129 | .num_links = 1, |
130 | }; | |
131 | ||
f274143f | 132 | static struct platform_device *bf5xx_ssm2602_snd_device; |
a7e7f54f CC |
133 | |
134 | static int __init bf5xx_ssm2602_init(void) | |
135 | { | |
136 | int ret; | |
137 | ||
138 | pr_debug("%s enter\n", __func__); | |
f274143f BS |
139 | bf5xx_ssm2602_snd_device = platform_device_alloc("soc-audio", -1); |
140 | if (!bf5xx_ssm2602_snd_device) | |
a7e7f54f CC |
141 | return -ENOMEM; |
142 | ||
f0fba2ad | 143 | platform_set_drvdata(bf5xx_ssm2602_snd_device, &bf5xx_ssm2602); |
f274143f | 144 | ret = platform_device_add(bf5xx_ssm2602_snd_device); |
a7e7f54f CC |
145 | |
146 | if (ret) | |
f274143f | 147 | platform_device_put(bf5xx_ssm2602_snd_device); |
a7e7f54f CC |
148 | |
149 | return ret; | |
150 | } | |
151 | ||
152 | static void __exit bf5xx_ssm2602_exit(void) | |
153 | { | |
154 | pr_debug("%s enter\n", __func__); | |
f274143f | 155 | platform_device_unregister(bf5xx_ssm2602_snd_device); |
a7e7f54f CC |
156 | } |
157 | ||
158 | module_init(bf5xx_ssm2602_init); | |
159 | module_exit(bf5xx_ssm2602_exit); | |
160 | ||
161 | /* Module information */ | |
162 | MODULE_AUTHOR("Cliff Cai"); | |
163 | MODULE_DESCRIPTION("ALSA SoC SSM2602 BF527-EZKIT"); | |
164 | MODULE_LICENSE("GPL"); | |
165 |