Merge branch 'irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip...
[linux-2.6] / 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 "s3c24xx-pcm.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->dai->codec_dai;
53         struct snd_soc_dai *cpu_dai = rtd->dai->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_calc_rate(&div, NULL, params_rate(params),
73                             s3c2412_get_iisclk());
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_codec *codec)
112 {
113         int err;
114
115         /* These endpoints are not being used. */
116         snd_soc_dapm_nc_pin(codec, "LINPUT2");
117         snd_soc_dapm_nc_pin(codec, "RINPUT2");
118         snd_soc_dapm_nc_pin(codec, "LINPUT3");
119         snd_soc_dapm_nc_pin(codec, "RINPUT3");
120         snd_soc_dapm_nc_pin(codec, "OUT3");
121         snd_soc_dapm_nc_pin(codec, "MONO");
122
123         /* Add jive specific widgets */
124         err = snd_soc_dapm_new_controls(codec, wm8750_dapm_widgets,
125                                         ARRAY_SIZE(wm8750_dapm_widgets));
126         if (err) {
127                 printk(KERN_ERR "%s: failed to add widgets (%d)\n",
128                        __func__, err);
129                 return err;
130         }
131
132         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
133         snd_soc_dapm_sync(codec);
134
135         return 0;
136 }
137
138 static struct snd_soc_dai_link jive_dai = {
139         .name           = "wm8750",
140         .stream_name    = "WM8750",
141         .cpu_dai        = &s3c2412_i2s_dai,
142         .codec_dai      = &wm8750_dai,
143         .init           = jive_wm8750_init,
144         .ops            = &jive_ops,
145 };
146
147 /* jive audio machine driver */
148 static struct snd_soc_machine snd_soc_machine_jive = {
149         .name           = "Jive",
150         .dai_link       = &jive_dai,
151         .num_links      = 1,
152 };
153
154 /* jive audio private data */
155 static struct wm8750_setup_data jive_wm8750_setup = {
156 };
157
158 /* jive audio subsystem */
159 static struct snd_soc_device jive_snd_devdata = {
160         .machine        = &snd_soc_machine_jive,
161         .platform       = &s3c24xx_soc_platform,
162         .codec_dev      = &soc_codec_dev_wm8750_spi,
163         .codec_data     = &jive_wm8750_setup,
164 };
165
166 static struct platform_device *jive_snd_device;
167
168 static int __init jive_init(void)
169 {
170         int ret;
171
172         if (!machine_is_jive())
173                 return 0;
174
175         printk("JIVE WM8750 Audio support\n");
176
177         jive_snd_device = platform_device_alloc("soc-audio", -1);
178         if (!jive_snd_device)
179                 return -ENOMEM;
180
181         platform_set_drvdata(jive_snd_device, &jive_snd_devdata);
182         jive_snd_devdata.dev = &jive_snd_device->dev;
183         ret = platform_device_add(jive_snd_device);
184
185         if (ret)
186                 platform_device_put(jive_snd_device);
187
188         return ret;
189 }
190
191 static void __exit jive_exit(void)
192 {
193         platform_device_unregister(jive_snd_device);
194 }
195
196 module_init(jive_init);
197 module_exit(jive_exit);
198
199 MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
200 MODULE_DESCRIPTION("ALSA SoC Jive Audio support");
201 MODULE_LICENSE("GPL");