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_iis_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_card snd_soc_machine_jive = {
149 .name = "Jive",
150 .platform = &s3c24xx_soc_platform,
151 .dai_link = &jive_dai,
152 .num_links = 1,
153 };
154
155 /* jive audio private data */
156 static struct wm8750_setup_data jive_wm8750_setup = {
157 };
158
159 /* jive audio subsystem */
160 static struct snd_soc_device jive_snd_devdata = {
161 .card = &snd_soc_machine_jive,
162 .codec_dev = &soc_codec_dev_wm8750,
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");
202
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