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ASoC: Decouple DAPM from CODECs
[mv-sheeva.git] / sound / soc / s3c24xx / jive_wm8750.c
1 /* sound/soc/s3c24xx/jive_wm8750.c
2  *
3  * Copyright 2007,2008 Simtec Electronics
4  *
5  * Based on sound/soc/pxa/spitz.c
6  *      Copyright 2005 Wolfson Microelectronics PLC.
7  *      Copyright 2005 Openedhand Ltd.
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License version 2 as
11  * published by the Free Software Foundation.
12 */
13
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/timer.h>
17 #include <linux/interrupt.h>
18 #include <linux/platform_device.h>
19 #include <linux/clk.h>
20
21 #include <sound/core.h>
22 #include <sound/pcm.h>
23 #include <sound/soc.h>
24 #include <sound/soc-dapm.h>
25
26 #include <asm/mach-types.h>
27
28 #include "s3c-dma.h"
29 #include "s3c2412-i2s.h"
30
31 #include "../codecs/wm8750.h"
32
33 static const struct snd_soc_dapm_route audio_map[] = {
34         { "Headphone Jack", NULL, "LOUT1" },
35         { "Headphone Jack", NULL, "ROUT1" },
36         { "Internal Speaker", NULL, "LOUT2" },
37         { "Internal Speaker", NULL, "ROUT2" },
38         { "LINPUT1", NULL, "Line Input" },
39         { "RINPUT1", NULL, "Line Input" },
40 };
41
42 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
43         SND_SOC_DAPM_HP("Headphone Jack", NULL),
44         SND_SOC_DAPM_SPK("Internal Speaker", NULL),
45         SND_SOC_DAPM_LINE("Line In", NULL),
46 };
47
48 static int jive_hw_params(struct snd_pcm_substream *substream,
49                           struct snd_pcm_hw_params *params)
50 {
51         struct snd_soc_pcm_runtime *rtd = substream->private_data;
52         struct snd_soc_dai *codec_dai = rtd->codec_dai;
53         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
54         struct s3c_i2sv2_rate_calc div;
55         unsigned int clk = 0;
56         int ret = 0;
57
58         switch (params_rate(params)) {
59         case 8000:
60         case 16000:
61         case 48000:
62         case 96000:
63                 clk = 12288000;
64                 break;
65         case 11025:
66         case 22050:
67         case 44100:
68                 clk = 11289600;
69                 break;
70         }
71
72         s3c_i2sv2_iis_calc_rate(&div, NULL, params_rate(params),
73                                 s3c_i2sv2_get_clock(cpu_dai));
74
75         /* set codec DAI configuration */
76         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
77                                   SND_SOC_DAIFMT_NB_NF |
78                                   SND_SOC_DAIFMT_CBS_CFS);
79         if (ret < 0)
80                 return ret;
81
82         /* set cpu DAI configuration */
83         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
84                                   SND_SOC_DAIFMT_NB_NF |
85                                   SND_SOC_DAIFMT_CBS_CFS);
86         if (ret < 0)
87                 return ret;
88
89         /* set the codec system clock for DAC and ADC */
90         ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
91                                      SND_SOC_CLOCK_IN);
92         if (ret < 0)
93                 return ret;
94
95         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C2412_DIV_RCLK, div.fs_div);
96         if (ret < 0)
97                 return ret;
98
99         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C2412_DIV_PRESCALER,
100                                      div.clk_div - 1);
101         if (ret < 0)
102                 return ret;
103
104         return 0;
105 }
106
107 static struct snd_soc_ops jive_ops = {
108         .hw_params      = jive_hw_params,
109 };
110
111 static int jive_wm8750_init(struct snd_soc_pcm_runtime *rtd)
112 {
113         struct snd_soc_codec *codec = rtd->codec;
114         struct snd_soc_dapm_context *dapm = &codec->dapm;
115         int err;
116
117         /* These endpoints are not being used. */
118         snd_soc_dapm_nc_pin(dapm, "LINPUT2");
119         snd_soc_dapm_nc_pin(dapm, "RINPUT2");
120         snd_soc_dapm_nc_pin(dapm, "LINPUT3");
121         snd_soc_dapm_nc_pin(dapm, "RINPUT3");
122         snd_soc_dapm_nc_pin(dapm, "OUT3");
123         snd_soc_dapm_nc_pin(dapm, "MONO");
124
125         /* Add jive specific widgets */
126         err = snd_soc_dapm_new_controls(dapm, wm8750_dapm_widgets,
127                                         ARRAY_SIZE(wm8750_dapm_widgets));
128         if (err) {
129                 printk(KERN_ERR "%s: failed to add widgets (%d)\n",
130                        __func__, err);
131                 return err;
132         }
133
134         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
135         snd_soc_dapm_sync(dapm);
136
137         return 0;
138 }
139
140 static struct snd_soc_dai_link jive_dai = {
141         .name           = "wm8750",
142         .stream_name    = "WM8750",
143         .cpu_dai_name   = "s3c2412-i2s",
144         .codec_dai_name = "wm8750-hifi",
145         .platform_name  = "s3c24xx-pcm-audio",
146         .codec_name     = "wm8750-codec.0-0x1a",
147         .init           = jive_wm8750_init,
148         .ops            = &jive_ops,
149 };
150
151 /* jive audio machine driver */
152 static struct snd_soc_card snd_soc_machine_jive = {
153         .name           = "Jive",
154         .dai_link       = &jive_dai,
155         .num_links      = 1,
156 };
157
158 static struct platform_device *jive_snd_device;
159
160 static int __init jive_init(void)
161 {
162         int ret;
163
164         if (!machine_is_jive())
165                 return 0;
166
167         printk("JIVE WM8750 Audio support\n");
168
169         jive_snd_device = platform_device_alloc("soc-audio", -1);
170         if (!jive_snd_device)
171                 return -ENOMEM;
172
173         platform_set_drvdata(jive_snd_device, &snd_soc_machine_jive);
174         ret = platform_device_add(jive_snd_device);
175
176         if (ret)
177                 platform_device_put(jive_snd_device);
178
179         return ret;
180 }
181
182 static void __exit jive_exit(void)
183 {
184         platform_device_unregister(jive_snd_device);
185 }
186
187 module_init(jive_init);
188 module_exit(jive_exit);
189
190 MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
191 MODULE_DESCRIPTION("ALSA SoC Jive Audio support");
192 MODULE_LICENSE("GPL");