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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> | |
36 | #include <sound/soc-dapm.h> | |
37 | #include <sound/pcm_params.h> | |
38 | ||
39 | #include <asm/dma.h> | |
40 | #include <asm/portmux.h> | |
41 | #include <linux/gpio.h> | |
42 | #include "../codecs/ssm2602.h" | |
43 | #include "bf5xx-sport.h" | |
44 | #include "bf5xx-i2s-pcm.h" | |
a7e7f54f | 45 | |
87506549 | 46 | static struct snd_soc_card bf5xx_ssm2602; |
a7e7f54f CC |
47 | |
48 | static int bf5xx_ssm2602_startup(struct snd_pcm_substream *substream) | |
49 | { | |
50 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad | 51 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
a7e7f54f CC |
52 | |
53 | pr_debug("%s enter\n", __func__); | |
f0fba2ad | 54 | snd_soc_dai_set_drvdata(cpu_dai, sport_handle); |
a7e7f54f CC |
55 | return 0; |
56 | } | |
57 | ||
58 | static int bf5xx_ssm2602_hw_params(struct snd_pcm_substream *substream, | |
59 | struct snd_pcm_hw_params *params) | |
60 | { | |
61 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad LG |
62 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
63 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
a7e7f54f CC |
64 | unsigned int clk = 0; |
65 | int ret = 0; | |
66 | ||
67 | pr_debug("%s rate %d format %x\n", __func__, params_rate(params), | |
68 | params_format(params)); | |
69 | /* | |
70 | * If you are using a crystal source which frequency is not 12MHz | |
71 | * then modify the below case statement with frequency of the crystal. | |
72 | * | |
73 | * If you are using the SPORT to generate clocking then this is | |
74 | * where to do it. | |
75 | */ | |
76 | ||
77 | switch (params_rate(params)) { | |
78 | case 8000: | |
79 | case 16000: | |
80 | case 48000: | |
81 | case 96000: | |
82 | case 11025: | |
83 | case 22050: | |
84 | case 44100: | |
85 | clk = 12000000; | |
86 | break; | |
87 | } | |
88 | ||
89 | /* | |
90 | * CODEC is master for BCLK and LRC in this configuration. | |
91 | */ | |
92 | ||
93 | /* set codec DAI configuration */ | |
9b0db7e7 | 94 | ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | |
a7e7f54f CC |
95 | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM); |
96 | if (ret < 0) | |
97 | return ret; | |
98 | /* set cpu DAI configuration */ | |
9b0db7e7 | 99 | ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | |
a7e7f54f CC |
100 | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM); |
101 | if (ret < 0) | |
102 | return ret; | |
103 | ||
9b0db7e7 | 104 | ret = snd_soc_dai_set_sysclk(codec_dai, SSM2602_SYSCLK, clk, |
a7e7f54f CC |
105 | SND_SOC_CLOCK_IN); |
106 | if (ret < 0) | |
107 | return ret; | |
108 | ||
109 | return 0; | |
110 | } | |
111 | ||
112 | static struct snd_soc_ops bf5xx_ssm2602_ops = { | |
113 | .startup = bf5xx_ssm2602_startup, | |
114 | .hw_params = bf5xx_ssm2602_hw_params, | |
115 | }; | |
116 | ||
117 | static struct snd_soc_dai_link bf5xx_ssm2602_dai = { | |
118 | .name = "ssm2602", | |
119 | .stream_name = "SSM2602", | |
f0fba2ad LG |
120 | .cpu_dai_name = "bf5xx-i2s", |
121 | .codec_dai_name = "ssm2602-hifi", | |
122 | .platform_name = "bf5xx-pcm-audio", | |
123 | .codec_name = "ssm2602-codec.0-0x1b", | |
a7e7f54f CC |
124 | .ops = &bf5xx_ssm2602_ops, |
125 | }; | |
126 | ||
87506549 | 127 | static struct snd_soc_card bf5xx_ssm2602 = { |
a7e7f54f CC |
128 | .name = "bf5xx_ssm2602", |
129 | .dai_link = &bf5xx_ssm2602_dai, | |
130 | .num_links = 1, | |
131 | }; | |
132 | ||
f274143f | 133 | static struct platform_device *bf5xx_ssm2602_snd_device; |
a7e7f54f CC |
134 | |
135 | static int __init bf5xx_ssm2602_init(void) | |
136 | { | |
137 | int ret; | |
138 | ||
139 | pr_debug("%s enter\n", __func__); | |
f274143f BS |
140 | bf5xx_ssm2602_snd_device = platform_device_alloc("soc-audio", -1); |
141 | if (!bf5xx_ssm2602_snd_device) | |
a7e7f54f CC |
142 | return -ENOMEM; |
143 | ||
f0fba2ad | 144 | platform_set_drvdata(bf5xx_ssm2602_snd_device, &bf5xx_ssm2602); |
f274143f | 145 | ret = platform_device_add(bf5xx_ssm2602_snd_device); |
a7e7f54f CC |
146 | |
147 | if (ret) | |
f274143f | 148 | platform_device_put(bf5xx_ssm2602_snd_device); |
a7e7f54f CC |
149 | |
150 | return ret; | |
151 | } | |
152 | ||
153 | static void __exit bf5xx_ssm2602_exit(void) | |
154 | { | |
155 | pr_debug("%s enter\n", __func__); | |
f274143f | 156 | platform_device_unregister(bf5xx_ssm2602_snd_device); |
a7e7f54f CC |
157 | } |
158 | ||
159 | module_init(bf5xx_ssm2602_init); | |
160 | module_exit(bf5xx_ssm2602_exit); | |
161 | ||
162 | /* Module information */ | |
163 | MODULE_AUTHOR("Cliff Cai"); | |
164 | MODULE_DESCRIPTION("ALSA SoC SSM2602 BF527-EZKIT"); | |
165 | MODULE_LICENSE("GPL"); | |
166 |