1 /* sound/soc/s3c24xx/jive_wm8750.c
3 * Copyright 2007,2008 Simtec Electronics
5 * Based on sound/soc/pxa/spitz.c
6 * Copyright 2005 Wolfson Microelectronics PLC.
7 * Copyright 2005 Openedhand Ltd.
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.
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>
21 #include <sound/core.h>
22 #include <sound/pcm.h>
23 #include <sound/soc.h>
24 #include <sound/soc-dapm.h>
26 #include <asm/mach-types.h>
29 #include "s3c2412-i2s.h"
31 #include "../codecs/wm8750.h"
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" },
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),
48 static int jive_hw_params(struct snd_pcm_substream *substream,
49 struct snd_pcm_hw_params *params)
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;
58 switch (params_rate(params)) {
72 s3c_i2sv2_iis_calc_rate(&div, NULL, params_rate(params),
73 s3c_i2sv2_get_clock(cpu_dai));
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);
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);
89 /* set the codec system clock for DAC and ADC */
90 ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
95 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C2412_DIV_RCLK, div.fs_div);
99 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C2412_DIV_PRESCALER,
107 static struct snd_soc_ops jive_ops = {
108 .hw_params = jive_hw_params,
111 static int jive_wm8750_init(struct snd_soc_pcm_runtime *rtd)
113 struct snd_soc_codec *codec = rtd->codec;
114 struct snd_soc_dapm_context *dapm = &codec->dapm;
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");
125 /* Add jive specific widgets */
126 err = snd_soc_dapm_new_controls(dapm, wm8750_dapm_widgets,
127 ARRAY_SIZE(wm8750_dapm_widgets));
129 printk(KERN_ERR "%s: failed to add widgets (%d)\n",
134 snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
135 snd_soc_dapm_sync(dapm);
140 static struct snd_soc_dai_link jive_dai = {
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,
151 /* jive audio machine driver */
152 static struct snd_soc_card snd_soc_machine_jive = {
154 .dai_link = &jive_dai,
158 static struct platform_device *jive_snd_device;
160 static int __init jive_init(void)
164 if (!machine_is_jive())
167 printk("JIVE WM8750 Audio support\n");
169 jive_snd_device = platform_device_alloc("soc-audio", -1);
170 if (!jive_snd_device)
173 platform_set_drvdata(jive_snd_device, &snd_soc_machine_jive);
174 ret = platform_device_add(jive_snd_device);
177 platform_device_put(jive_snd_device);
182 static void __exit jive_exit(void)
184 platform_device_unregister(jive_snd_device);
187 module_init(jive_init);
188 module_exit(jive_exit);
190 MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
191 MODULE_DESCRIPTION("ALSA SoC Jive Audio support");
192 MODULE_LICENSE("GPL");