tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/* sound/soc/samsung/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 <sound/soc.h>
16
17#include <asm/mach-types.h>
18
19#include "s3c2412-i2s.h"
20#include "../codecs/wm8750.h"
21
22static const struct snd_soc_dapm_route audio_map[] = {
23 { "Headphone Jack", NULL, "LOUT1" },
24 { "Headphone Jack", NULL, "ROUT1" },
25 { "Internal Speaker", NULL, "LOUT2" },
26 { "Internal Speaker", NULL, "ROUT2" },
27 { "LINPUT1", NULL, "Line Input" },
28 { "RINPUT1", NULL, "Line Input" },
29};
30
31static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
32 SND_SOC_DAPM_HP("Headphone Jack", NULL),
33 SND_SOC_DAPM_SPK("Internal Speaker", NULL),
34 SND_SOC_DAPM_LINE("Line In", NULL),
35};
36
37static int jive_hw_params(struct snd_pcm_substream *substream,
38 struct snd_pcm_hw_params *params)
39{
40 struct snd_soc_pcm_runtime *rtd = substream->private_data;
41 struct snd_soc_dai *codec_dai = rtd->codec_dai;
42 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
43 struct s3c_i2sv2_rate_calc div;
44 unsigned int clk = 0;
45 int ret = 0;
46
47 switch (params_rate(params)) {
48 case 8000:
49 case 16000:
50 case 48000:
51 case 96000:
52 clk = 12288000;
53 break;
54 case 11025:
55 case 22050:
56 case 44100:
57 clk = 11289600;
58 break;
59 }
60
61 s3c_i2sv2_iis_calc_rate(&div, NULL, params_rate(params),
62 s3c_i2sv2_get_clock(cpu_dai));
63
64 /* set codec DAI configuration */
65 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
66 SND_SOC_DAIFMT_NB_NF |
67 SND_SOC_DAIFMT_CBS_CFS);
68 if (ret < 0)
69 return ret;
70
71 /* set cpu DAI configuration */
72 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
73 SND_SOC_DAIFMT_NB_NF |
74 SND_SOC_DAIFMT_CBS_CFS);
75 if (ret < 0)
76 return ret;
77
78 /* set the codec system clock for DAC and ADC */
79 ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
80 SND_SOC_CLOCK_IN);
81 if (ret < 0)
82 return ret;
83
84 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C2412_DIV_RCLK, div.fs_div);
85 if (ret < 0)
86 return ret;
87
88 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C2412_DIV_PRESCALER,
89 div.clk_div - 1);
90 if (ret < 0)
91 return ret;
92
93 return 0;
94}
95
96static struct snd_soc_ops jive_ops = {
97 .hw_params = jive_hw_params,
98};
99
100static int jive_wm8750_init(struct snd_soc_pcm_runtime *rtd)
101{
102 struct snd_soc_codec *codec = rtd->codec;
103 struct snd_soc_dapm_context *dapm = &codec->dapm;
104
105 /* These endpoints are not being used. */
106 snd_soc_dapm_nc_pin(dapm, "LINPUT2");
107 snd_soc_dapm_nc_pin(dapm, "RINPUT2");
108 snd_soc_dapm_nc_pin(dapm, "LINPUT3");
109 snd_soc_dapm_nc_pin(dapm, "RINPUT3");
110 snd_soc_dapm_nc_pin(dapm, "OUT3");
111 snd_soc_dapm_nc_pin(dapm, "MONO");
112
113 return 0;
114}
115
116static struct snd_soc_dai_link jive_dai = {
117 .name = "wm8750",
118 .stream_name = "WM8750",
119 .cpu_dai_name = "s3c2412-i2s",
120 .codec_dai_name = "wm8750-hifi",
121 .platform_name = "s3c2412-i2s",
122 .codec_name = "wm8750.0-001a",
123 .init = jive_wm8750_init,
124 .ops = &jive_ops,
125};
126
127/* jive audio machine driver */
128static struct snd_soc_card snd_soc_machine_jive = {
129 .name = "Jive",
130 .owner = THIS_MODULE,
131 .dai_link = &jive_dai,
132 .num_links = 1,
133
134 .dapm_widgets = wm8750_dapm_widgets,
135 .num_dapm_widgets = ARRAY_SIZE(wm8750_dapm_widgets),
136 .dapm_routes = audio_map,
137 .num_dapm_routes = ARRAY_SIZE(audio_map),
138};
139
140static struct platform_device *jive_snd_device;
141
142static int __init jive_init(void)
143{
144 int ret;
145
146 if (!machine_is_jive())
147 return 0;
148
149 printk("JIVE WM8750 Audio support\n");
150
151 jive_snd_device = platform_device_alloc("soc-audio", -1);
152 if (!jive_snd_device)
153 return -ENOMEM;
154
155 platform_set_drvdata(jive_snd_device, &snd_soc_machine_jive);
156 ret = platform_device_add(jive_snd_device);
157
158 if (ret)
159 platform_device_put(jive_snd_device);
160
161 return ret;
162}
163
164static void __exit jive_exit(void)
165{
166 platform_device_unregister(jive_snd_device);
167}
168
169module_init(jive_init);
170module_exit(jive_exit);
171
172MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
173MODULE_DESCRIPTION("ALSA SoC Jive Audio support");
174MODULE_LICENSE("GPL");