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_init(struct snd_soc_pcm_runtime *rtd)
49{
50	struct snd_soc_codec *codec = rtd->codec;
51	struct snd_soc_dapm_context *dapm = &codec->dapm;
52
53	/* set endpoints to not connected */
54	snd_soc_dapm_nc_pin(dapm, "HPOUT2P");
55	snd_soc_dapm_nc_pin(dapm, "HPOUT2N");
56	snd_soc_dapm_nc_pin(dapm, "LINEOUT1N");
57	snd_soc_dapm_nc_pin(dapm, "LINEOUT1P");
58	snd_soc_dapm_nc_pin(dapm, "LINEOUT2N");
59	snd_soc_dapm_nc_pin(dapm, "LINEOUT2P");
60	snd_soc_dapm_nc_pin(dapm, "IN1LN");
61	snd_soc_dapm_nc_pin(dapm, "IN1LP");
62	snd_soc_dapm_nc_pin(dapm, "IN1RP");
63	snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN");
64	snd_soc_dapm_nc_pin(dapm, "IN2RN");
65	snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP");
66	snd_soc_dapm_nc_pin(dapm, "IN2LN");
67
68	return 0;
69}
70
71static int brownstone_wm8994_hw_params(struct snd_pcm_substream *substream,
72				       struct snd_pcm_hw_params *params)
73{
74	struct snd_soc_pcm_runtime *rtd = substream->private_data;
75	struct snd_soc_dai *codec_dai = rtd->codec_dai;
76	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
77	int freq_out, sspa_mclk, sysclk;
78	int sspa_div;
79
80	if (params_rate(params) > 11025) {
81		freq_out  = params_rate(params) * 512;
82		sysclk    = params_rate(params) * 256;
83		sspa_mclk = params_rate(params) * 64;
84	} else {
85		freq_out  = params_rate(params) * 1024;
86		sysclk    = params_rate(params) * 512;
87		sspa_mclk = params_rate(params) * 64;
88	}
89	sspa_div = freq_out;
90	do_div(sspa_div, sspa_mclk);
91
92	snd_soc_dai_set_sysclk(cpu_dai, MMP_SSPA_CLK_AUDIO, freq_out, 0);
93	snd_soc_dai_set_pll(cpu_dai, MMP_SYSCLK, 0, freq_out, sysclk);
94	snd_soc_dai_set_pll(cpu_dai, MMP_SSPA_CLK, 0, freq_out, sspa_mclk);
95
96	/* set wm8994 sysclk */
97	snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_MCLK1, sysclk, 0);
98
99	return 0;
100}
101
102/* machine stream operations */
103static struct snd_soc_ops brownstone_ops = {
104	.hw_params = brownstone_wm8994_hw_params,
105};
106
107static struct snd_soc_dai_link brownstone_wm8994_dai[] = {
108{
109	.name		= "WM8994",
110	.stream_name	= "WM8994 HiFi",
111	.cpu_dai_name	= "mmp-sspa-dai.0",
112	.codec_dai_name	= "wm8994-aif1",
113	.platform_name	= "mmp-pcm-audio",
114	.codec_name	= "wm8994-codec",
115	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
116				SND_SOC_DAIFMT_CBS_CFS,
117	.ops		= &brownstone_ops,
118	.init		= brownstone_wm8994_init,
119},
120};
121
122/* audio machine driver */
123static struct snd_soc_card brownstone = {
124	.name         = "brownstone",
125	.owner        = THIS_MODULE,
126	.dai_link     = brownstone_wm8994_dai,
127	.num_links    = ARRAY_SIZE(brownstone_wm8994_dai),
128
129	.controls = brownstone_dapm_control,
130	.num_controls = ARRAY_SIZE(brownstone_dapm_control),
131	.dapm_widgets = brownstone_dapm_widgets,
132	.num_dapm_widgets = ARRAY_SIZE(brownstone_dapm_widgets),
133	.dapm_routes = brownstone_audio_map,
134	.num_dapm_routes = ARRAY_SIZE(brownstone_audio_map),
135};
136
137static int brownstone_probe(struct platform_device *pdev)
138{
139	int ret;
140
141	brownstone.dev = &pdev->dev;
142	ret = snd_soc_register_card(&brownstone);
143	if (ret)
144		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
145				ret);
146	return ret;
147}
148
149static int brownstone_remove(struct platform_device *pdev)
150{
151	snd_soc_unregister_card(&brownstone);
152	return 0;
153}
154
155static struct platform_driver mmp_driver = {
156	.driver		= {
157		.name	= "brownstone-audio",
158		.pm     = &snd_soc_pm_ops,
159	},
160	.probe		= brownstone_probe,
161	.remove		= brownstone_remove,
162};
163
164module_platform_driver(mmp_driver);
165
166MODULE_AUTHOR("Leo Yan <leoy@marvell.com>");
167MODULE_DESCRIPTION("ALSA SoC Brownstone");
168MODULE_LICENSE("GPL");
169