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Ben Dooks3093e482009-03-04 00:49:27 +00001/* 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
Jassi Brard3ff5a32009-11-17 16:53:31 +090028#include "s3c-dma.h"
Ben Dooks3093e482009-03-04 00:49:27 +000029#include "s3c2412-i2s.h"
30
31#include "../codecs/wm8750.h"
32
33static 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
42static 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
Ben Dooks3093e482009-03-04 00:49:27 +000048static 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;
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000052 struct snd_soc_dai *codec_dai = rtd->codec_dai;
53 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
Ben Dooksdc854472009-03-04 00:49:30 +000054 struct s3c_i2sv2_rate_calc div;
Ben Dooks3093e482009-03-04 00:49:27 +000055 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
Ben Dooks01c4cad2009-04-16 10:32:20 +010072 s3c_i2sv2_iis_calc_rate(&div, NULL, params_rate(params),
Jassi Brar57282422010-04-27 15:56:45 +090073 s3c_i2sv2_get_clock(cpu_dai));
Ben Dooks3093e482009-03-04 00:49:27 +000074
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
107static struct snd_soc_ops jive_ops = {
Ben Dooks3093e482009-03-04 00:49:27 +0000108 .hw_params = jive_hw_params,
109};
110
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000111static int jive_wm8750_init(struct snd_soc_pcm_runtime *rtd)
Ben Dooks3093e482009-03-04 00:49:27 +0000112{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000113 struct snd_soc_codec *codec = rtd->codec;
Ben Dooks3093e482009-03-04 00:49:27 +0000114 int err;
115
116 /* These endpoints are not being used. */
Mark Browna1b3eaeb2009-03-04 20:17:48 +0000117 snd_soc_dapm_nc_pin(codec, "LINPUT2");
118 snd_soc_dapm_nc_pin(codec, "RINPUT2");
119 snd_soc_dapm_nc_pin(codec, "LINPUT3");
120 snd_soc_dapm_nc_pin(codec, "RINPUT3");
121 snd_soc_dapm_nc_pin(codec, "OUT3");
122 snd_soc_dapm_nc_pin(codec, "MONO");
Ben Dooks3093e482009-03-04 00:49:27 +0000123
124 /* Add jive specific widgets */
125 err = snd_soc_dapm_new_controls(codec, wm8750_dapm_widgets,
126 ARRAY_SIZE(wm8750_dapm_widgets));
127 if (err) {
128 printk(KERN_ERR "%s: failed to add widgets (%d)\n",
129 __func__, err);
130 return err;
131 }
132
133 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
134 snd_soc_dapm_sync(codec);
135
136 return 0;
137}
138
139static struct snd_soc_dai_link jive_dai = {
140 .name = "wm8750",
141 .stream_name = "WM8750",
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000142 .cpu_dai_name = "s3c2412-i2s",
143 .codec_dai_name = "wm8750-hifi",
144 .platform_name = "s3c24xx-pcm-audio",
145 .codec_name = "wm8750-codec.0-0x1a",
Ben Dooks3093e482009-03-04 00:49:27 +0000146 .init = jive_wm8750_init,
147 .ops = &jive_ops,
148};
149
150/* jive audio machine driver */
Ben Dooks01c4cad2009-04-16 10:32:20 +0100151static struct snd_soc_card snd_soc_machine_jive = {
Ben Dooks3093e482009-03-04 00:49:27 +0000152 .name = "Jive",
153 .dai_link = &jive_dai,
154 .num_links = 1,
155};
156
Ben Dooks3093e482009-03-04 00:49:27 +0000157static struct platform_device *jive_snd_device;
158
159static int __init jive_init(void)
160{
161 int ret;
162
163 if (!machine_is_jive())
164 return 0;
165
166 printk("JIVE WM8750 Audio support\n");
167
168 jive_snd_device = platform_device_alloc("soc-audio", -1);
169 if (!jive_snd_device)
170 return -ENOMEM;
171
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000172 platform_set_drvdata(jive_snd_device, &snd_soc_machine_jive);
Ben Dooks3093e482009-03-04 00:49:27 +0000173 ret = platform_device_add(jive_snd_device);
174
175 if (ret)
176 platform_device_put(jive_snd_device);
177
178 return ret;
179}
180
181static void __exit jive_exit(void)
182{
183 platform_device_unregister(jive_snd_device);
184}
185
186module_init(jive_init);
187module_exit(jive_exit);
188
189MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
190MODULE_DESCRIPTION("ALSA SoC Jive Audio support");
191MODULE_LICENSE("GPL");