1/*
2 * linux/sound/soc/pxa/brownstone.c
3 *
4 * Copyright (C) 2011 Marvell International Ltd.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 */
12
13#include <linux/module.h>
14#include <sound/core.h>
15#include <sound/pcm.h>
16#include <sound/soc.h>
17#include <sound/jack.h>
18
19#include "../codecs/wm8994.h"
20#include "mmp-sspa.h"
21
22static const struct snd_kcontrol_new brownstone_dapm_control[] = {
23	SOC_DAPM_PIN_SWITCH("Ext Spk"),
24};
25
26static const struct snd_soc_dapm_widget brownstone_dapm_widgets[] = {
27	SND_SOC_DAPM_SPK("Ext Spk", NULL),
28	SND_SOC_DAPM_HP("Headset Stereophone", NULL),
29	SND_SOC_DAPM_MIC("Headset Mic", NULL),
30	SND_SOC_DAPM_MIC("Main Mic", NULL),
31};
32
33static const struct snd_soc_dapm_route brownstone_audio_map[] = {
34	{"Ext Spk", NULL, "SPKOUTLP"},
35	{"Ext Spk", NULL, "SPKOUTLN"},
36	{"Ext Spk", NULL, "SPKOUTRP"},
37	{"Ext Spk", NULL, "SPKOUTRN"},
38
39	{"Headset Stereophone", NULL, "HPOUT1L"},
40	{"Headset Stereophone", NULL, "HPOUT1R"},
41
42	{"IN1RN", NULL, "Headset Mic"},
43
44	{"DMIC1DAT", NULL, "MICBIAS1"},
45	{"MICBIAS1", NULL, "Main Mic"},
46};
47
48static int brownstone_wm8994_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;
52	struct snd_soc_dai *codec_dai = rtd->codec_dai;
53	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
54	int freq_out, sspa_mclk, sysclk;
55	int sspa_div;
56
57	if (params_rate(params) > 11025) {
58		freq_out  = params_rate(params) * 512;
59		sysclk    = params_rate(params) * 256;
60		sspa_mclk = params_rate(params) * 64;
61	} else {
62		freq_out  = params_rate(params) * 1024;
63		sysclk    = params_rate(params) * 512;
64		sspa_mclk = params_rate(params) * 64;
65	}
66	sspa_div = freq_out;
67	do_div(sspa_div, sspa_mclk);
68
69	snd_soc_dai_set_sysclk(cpu_dai, MMP_SSPA_CLK_AUDIO, freq_out, 0);
70	snd_soc_dai_set_pll(cpu_dai, MMP_SYSCLK, 0, freq_out, sysclk);
71	snd_soc_dai_set_pll(cpu_dai, MMP_SSPA_CLK, 0, freq_out, sspa_mclk);
72
73	/* set wm8994 sysclk */
74	snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_MCLK1, sysclk, 0);
75
76	return 0;
77}
78
79/* machine stream operations */
80static struct snd_soc_ops brownstone_ops = {
81	.hw_params = brownstone_wm8994_hw_params,
82};
83
84static struct snd_soc_dai_link brownstone_wm8994_dai[] = {
85{
86	.name		= "WM8994",
87	.stream_name	= "WM8994 HiFi",
88	.cpu_dai_name	= "mmp-sspa-dai.0",
89	.codec_dai_name	= "wm8994-aif1",
90	.platform_name	= "mmp-pcm-audio",
91	.codec_name	= "wm8994-codec",
92	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
93				SND_SOC_DAIFMT_CBS_CFS,
94	.ops		= &brownstone_ops,
95},
96};
97
98/* audio machine driver */
99static struct snd_soc_card brownstone = {
100	.name         = "brownstone",
101	.owner        = THIS_MODULE,
102	.dai_link     = brownstone_wm8994_dai,
103	.num_links    = ARRAY_SIZE(brownstone_wm8994_dai),
104
105	.controls = brownstone_dapm_control,
106	.num_controls = ARRAY_SIZE(brownstone_dapm_control),
107	.dapm_widgets = brownstone_dapm_widgets,
108	.num_dapm_widgets = ARRAY_SIZE(brownstone_dapm_widgets),
109	.dapm_routes = brownstone_audio_map,
110	.num_dapm_routes = ARRAY_SIZE(brownstone_audio_map),
111	.fully_routed = true,
112};
113
114static int brownstone_probe(struct platform_device *pdev)
115{
116	int ret;
117
118	brownstone.dev = &pdev->dev;
119	ret = devm_snd_soc_register_card(&pdev->dev, &brownstone);
120	if (ret)
121		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
122				ret);
123	return ret;
124}
125
126static struct platform_driver mmp_driver = {
127	.driver		= {
128		.name	= "brownstone-audio",
129		.pm     = &snd_soc_pm_ops,
130	},
131	.probe		= brownstone_probe,
132};
133
134module_platform_driver(mmp_driver);
135
136MODULE_AUTHOR("Leo Yan <leoy@marvell.com>");
137MODULE_DESCRIPTION("ALSA SoC Brownstone");
138MODULE_LICENSE("GPL");
139