Commit | Line | Data |
---|---|---|
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" | |
45 | #include "bf5xx-i2s.h" | |
46 | ||
87506549 | 47 | static struct snd_soc_card bf5xx_ssm2602; |
a7e7f54f CC |
48 | |
49 | static int bf5xx_ssm2602_startup(struct snd_pcm_substream *substream) | |
50 | { | |
51 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
52 | struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; | |
53 | ||
54 | pr_debug("%s enter\n", __func__); | |
55 | cpu_dai->private_data = sport_handle; | |
56 | return 0; | |
57 | } | |
58 | ||
59 | static int bf5xx_ssm2602_hw_params(struct snd_pcm_substream *substream, | |
60 | struct snd_pcm_hw_params *params) | |
61 | { | |
62 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
63 | struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; | |
64 | struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; | |
65 | unsigned int clk = 0; | |
66 | int ret = 0; | |
67 | ||
68 | pr_debug("%s rate %d format %x\n", __func__, params_rate(params), | |
69 | params_format(params)); | |
70 | /* | |
71 | * If you are using a crystal source which frequency is not 12MHz | |
72 | * then modify the below case statement with frequency of the crystal. | |
73 | * | |
74 | * If you are using the SPORT to generate clocking then this is | |
75 | * where to do it. | |
76 | */ | |
77 | ||
78 | switch (params_rate(params)) { | |
79 | case 8000: | |
80 | case 16000: | |
81 | case 48000: | |
82 | case 96000: | |
83 | case 11025: | |
84 | case 22050: | |
85 | case 44100: | |
86 | clk = 12000000; | |
87 | break; | |
88 | } | |
89 | ||
90 | /* | |
91 | * CODEC is master for BCLK and LRC in this configuration. | |
92 | */ | |
93 | ||
94 | /* set codec DAI configuration */ | |
9b0db7e7 | 95 | ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | |
a7e7f54f CC |
96 | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM); |
97 | if (ret < 0) | |
98 | return ret; | |
99 | /* set cpu DAI configuration */ | |
9b0db7e7 | 100 | ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | |
a7e7f54f CC |
101 | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM); |
102 | if (ret < 0) | |
103 | return ret; | |
104 | ||
9b0db7e7 | 105 | ret = snd_soc_dai_set_sysclk(codec_dai, SSM2602_SYSCLK, clk, |
a7e7f54f CC |
106 | SND_SOC_CLOCK_IN); |
107 | if (ret < 0) | |
108 | return ret; | |
109 | ||
110 | return 0; | |
111 | } | |
112 | ||
113 | static struct snd_soc_ops bf5xx_ssm2602_ops = { | |
114 | .startup = bf5xx_ssm2602_startup, | |
115 | .hw_params = bf5xx_ssm2602_hw_params, | |
116 | }; | |
117 | ||
118 | static struct snd_soc_dai_link bf5xx_ssm2602_dai = { | |
119 | .name = "ssm2602", | |
120 | .stream_name = "SSM2602", | |
121 | .cpu_dai = &bf5xx_i2s_dai, | |
122 | .codec_dai = &ssm2602_dai, | |
123 | .ops = &bf5xx_ssm2602_ops, | |
124 | }; | |
125 | ||
126 | /* | |
127 | * SSM2602 2 wire address is determined by CSB | |
128 | * state during powerup. | |
129 | * low = 0x1a | |
130 | * high = 0x1b | |
131 | */ | |
132 | ||
133 | static struct ssm2602_setup_data bf5xx_ssm2602_setup = { | |
134 | .i2c_bus = 0, | |
135 | .i2c_address = 0x1b, | |
136 | }; | |
137 | ||
87506549 | 138 | static struct snd_soc_card bf5xx_ssm2602 = { |
a7e7f54f | 139 | .name = "bf5xx_ssm2602", |
87689d56 | 140 | .platform = &bf5xx_i2s_soc_platform, |
a7e7f54f CC |
141 | .dai_link = &bf5xx_ssm2602_dai, |
142 | .num_links = 1, | |
143 | }; | |
144 | ||
145 | static struct snd_soc_device bf5xx_ssm2602_snd_devdata = { | |
87506549 | 146 | .card = &bf5xx_ssm2602, |
a7e7f54f CC |
147 | .codec_dev = &soc_codec_dev_ssm2602, |
148 | .codec_data = &bf5xx_ssm2602_setup, | |
149 | }; | |
150 | ||
151 | static struct platform_device *bf52x_ssm2602_snd_device; | |
152 | ||
153 | static int __init bf5xx_ssm2602_init(void) | |
154 | { | |
155 | int ret; | |
156 | ||
157 | pr_debug("%s enter\n", __func__); | |
158 | bf52x_ssm2602_snd_device = platform_device_alloc("soc-audio", -1); | |
159 | if (!bf52x_ssm2602_snd_device) | |
160 | return -ENOMEM; | |
161 | ||
162 | platform_set_drvdata(bf52x_ssm2602_snd_device, | |
163 | &bf5xx_ssm2602_snd_devdata); | |
164 | bf5xx_ssm2602_snd_devdata.dev = &bf52x_ssm2602_snd_device->dev; | |
165 | ret = platform_device_add(bf52x_ssm2602_snd_device); | |
166 | ||
167 | if (ret) | |
168 | platform_device_put(bf52x_ssm2602_snd_device); | |
169 | ||
170 | return ret; | |
171 | } | |
172 | ||
173 | static void __exit bf5xx_ssm2602_exit(void) | |
174 | { | |
175 | pr_debug("%s enter\n", __func__); | |
176 | platform_device_unregister(bf52x_ssm2602_snd_device); | |
177 | } | |
178 | ||
179 | module_init(bf5xx_ssm2602_init); | |
180 | module_exit(bf5xx_ssm2602_exit); | |
181 | ||
182 | /* Module information */ | |
183 | MODULE_AUTHOR("Cliff Cai"); | |
184 | MODULE_DESCRIPTION("ALSA SoC SSM2602 BF527-EZKIT"); | |
185 | MODULE_LICENSE("GPL"); | |
186 |