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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 | 51 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
a7e7f54f CC |
52 | unsigned int clk = 0; |
53 | int ret = 0; | |
54 | ||
55 | pr_debug("%s rate %d format %x\n", __func__, params_rate(params), | |
56 | params_format(params)); | |
57 | /* | |
58 | * If you are using a crystal source which frequency is not 12MHz | |
59 | * then modify the below case statement with frequency of the crystal. | |
60 | * | |
61 | * If you are using the SPORT to generate clocking then this is | |
62 | * where to do it. | |
63 | */ | |
64 | ||
65 | switch (params_rate(params)) { | |
66 | case 8000: | |
67 | case 16000: | |
68 | case 48000: | |
69 | case 96000: | |
70 | case 11025: | |
71 | case 22050: | |
72 | case 44100: | |
73 | clk = 12000000; | |
74 | break; | |
75 | } | |
76 | ||
9b0db7e7 | 77 | ret = snd_soc_dai_set_sysclk(codec_dai, SSM2602_SYSCLK, clk, |
a7e7f54f CC |
78 | SND_SOC_CLOCK_IN); |
79 | if (ret < 0) | |
80 | return ret; | |
81 | ||
82 | return 0; | |
83 | } | |
84 | ||
85 | static struct snd_soc_ops bf5xx_ssm2602_ops = { | |
a7e7f54f CC |
86 | .hw_params = bf5xx_ssm2602_hw_params, |
87 | }; | |
88 | ||
980b0bc6 LPC |
89 | /* CODEC is master for BCLK and LRC in this configuration. */ |
90 | #define BF5XX_SSM2602_DAIFMT (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | \ | |
91 | SND_SOC_DAIFMT_CBM_CFM) | |
92 | ||
2c66cb99 BS |
93 | static struct snd_soc_dai_link bf5xx_ssm2602_dai[] = { |
94 | { | |
95 | .name = "ssm2602", | |
96 | .stream_name = "SSM2602", | |
97 | .cpu_dai_name = "bfin-i2s.0", | |
98 | .codec_dai_name = "ssm2602-hifi", | |
99 | .platform_name = "bfin-i2s-pcm-audio", | |
100 | .codec_name = "ssm2602.0-001b", | |
101 | .ops = &bf5xx_ssm2602_ops, | |
102 | }, | |
103 | { | |
104 | .name = "ssm2602", | |
105 | .stream_name = "SSM2602", | |
106 | .cpu_dai_name = "bfin-i2s.1", | |
107 | .codec_dai_name = "ssm2602-hifi", | |
108 | .platform_name = "bfin-i2s-pcm-audio", | |
109 | .codec_name = "ssm2602.0-001b", | |
110 | .ops = &bf5xx_ssm2602_ops, | |
111 | }, | |
a7e7f54f CC |
112 | }; |
113 | ||
87506549 | 114 | static struct snd_soc_card bf5xx_ssm2602 = { |
bfe4ee0a | 115 | .name = "bfin-ssm2602", |
30e49530 | 116 | .owner = THIS_MODULE, |
2c66cb99 | 117 | .dai_link = &bf5xx_ssm2602_dai[CONFIG_SND_BF5XX_SPORT_NUM], |
a7e7f54f CC |
118 | .num_links = 1, |
119 | }; | |
120 | ||
f274143f | 121 | static struct platform_device *bf5xx_ssm2602_snd_device; |
a7e7f54f CC |
122 | |
123 | static int __init bf5xx_ssm2602_init(void) | |
124 | { | |
125 | int ret; | |
126 | ||
127 | pr_debug("%s enter\n", __func__); | |
f274143f BS |
128 | bf5xx_ssm2602_snd_device = platform_device_alloc("soc-audio", -1); |
129 | if (!bf5xx_ssm2602_snd_device) | |
a7e7f54f CC |
130 | return -ENOMEM; |
131 | ||
f0fba2ad | 132 | platform_set_drvdata(bf5xx_ssm2602_snd_device, &bf5xx_ssm2602); |
f274143f | 133 | ret = platform_device_add(bf5xx_ssm2602_snd_device); |
a7e7f54f CC |
134 | |
135 | if (ret) | |
f274143f | 136 | platform_device_put(bf5xx_ssm2602_snd_device); |
a7e7f54f CC |
137 | |
138 | return ret; | |
139 | } | |
140 | ||
141 | static void __exit bf5xx_ssm2602_exit(void) | |
142 | { | |
143 | pr_debug("%s enter\n", __func__); | |
f274143f | 144 | platform_device_unregister(bf5xx_ssm2602_snd_device); |
a7e7f54f CC |
145 | } |
146 | ||
147 | module_init(bf5xx_ssm2602_init); | |
148 | module_exit(bf5xx_ssm2602_exit); | |
149 | ||
150 | /* Module information */ | |
151 | MODULE_AUTHOR("Cliff Cai"); | |
152 | MODULE_DESCRIPTION("ALSA SoC SSM2602 BF527-EZKIT"); | |
153 | MODULE_LICENSE("GPL"); | |
154 |