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
22 static 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
31 static 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
jive_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)37 static 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 the codec system clock for DAC and ADC */
65 ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
66 SND_SOC_CLOCK_IN);
67 if (ret < 0)
68 return ret;
69
70 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C2412_DIV_RCLK, div.fs_div);
71 if (ret < 0)
72 return ret;
73
74 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C2412_DIV_PRESCALER,
75 div.clk_div - 1);
76 if (ret < 0)
77 return ret;
78
79 return 0;
80 }
81
82 static const struct snd_soc_ops jive_ops = {
83 .hw_params = jive_hw_params,
84 };
85
86 static struct snd_soc_dai_link jive_dai = {
87 .name = "wm8750",
88 .stream_name = "WM8750",
89 .cpu_dai_name = "s3c2412-i2s",
90 .codec_dai_name = "wm8750-hifi",
91 .platform_name = "s3c2412-i2s",
92 .codec_name = "wm8750.0-001a",
93 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
94 SND_SOC_DAIFMT_CBS_CFS,
95 .ops = &jive_ops,
96 };
97
98 /* jive audio machine driver */
99 static struct snd_soc_card snd_soc_machine_jive = {
100 .name = "Jive",
101 .owner = THIS_MODULE,
102 .dai_link = &jive_dai,
103 .num_links = 1,
104
105 .dapm_widgets = wm8750_dapm_widgets,
106 .num_dapm_widgets = ARRAY_SIZE(wm8750_dapm_widgets),
107 .dapm_routes = audio_map,
108 .num_dapm_routes = ARRAY_SIZE(audio_map),
109 .fully_routed = true,
110 };
111
112 static struct platform_device *jive_snd_device;
113
jive_init(void)114 static int __init jive_init(void)
115 {
116 int ret;
117
118 if (!machine_is_jive())
119 return 0;
120
121 printk("JIVE WM8750 Audio support\n");
122
123 jive_snd_device = platform_device_alloc("soc-audio", -1);
124 if (!jive_snd_device)
125 return -ENOMEM;
126
127 platform_set_drvdata(jive_snd_device, &snd_soc_machine_jive);
128 ret = platform_device_add(jive_snd_device);
129
130 if (ret)
131 platform_device_put(jive_snd_device);
132
133 return ret;
134 }
135
jive_exit(void)136 static void __exit jive_exit(void)
137 {
138 platform_device_unregister(jive_snd_device);
139 }
140
141 module_init(jive_init);
142 module_exit(jive_exit);
143
144 MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
145 MODULE_DESCRIPTION("ALSA SoC Jive Audio support");
146 MODULE_LICENSE("GPL");
147
