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 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
82static struct snd_soc_ops jive_ops = {
83	.hw_params	= jive_hw_params,
84};
85
86static 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 */
99static 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
112static struct platform_device *jive_snd_device;
113
114static 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
136static void __exit jive_exit(void)
137{
138	platform_device_unregister(jive_snd_device);
139}
140
141module_init(jive_init);
142module_exit(jive_exit);
143
144MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
145MODULE_DESCRIPTION("ALSA SoC Jive Audio support");
146MODULE_LICENSE("GPL");
147