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
 56	if (params_rate(params) > 11025) {
 57		freq_out  = params_rate(params) * 512;
 58		sysclk    = params_rate(params) * 256;
 59		sspa_mclk = params_rate(params) * 64;
 60	} else {
 61		freq_out  = params_rate(params) * 1024;
 62		sysclk    = params_rate(params) * 512;
 63		sspa_mclk = params_rate(params) * 64;
 64	}
 65
 66	snd_soc_dai_set_sysclk(cpu_dai, MMP_SSPA_CLK_AUDIO, freq_out, 0);
 67	snd_soc_dai_set_pll(cpu_dai, MMP_SYSCLK, 0, freq_out, sysclk);
 68	snd_soc_dai_set_pll(cpu_dai, MMP_SSPA_CLK, 0, freq_out, sspa_mclk);
 69
 70	/* set wm8994 sysclk */
 71	snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_MCLK1, sysclk, 0);
 72
 73	return 0;
 74}
 75
 76/* machine stream operations */
 77static const struct snd_soc_ops brownstone_ops = {
 78	.hw_params = brownstone_wm8994_hw_params,
 79};
 80
 81static struct snd_soc_dai_link brownstone_wm8994_dai[] = {
 82{
 83	.name		= "WM8994",
 84	.stream_name	= "WM8994 HiFi",
 85	.cpu_dai_name	= "mmp-sspa-dai.0",
 86	.codec_dai_name	= "wm8994-aif1",
 87	.platform_name	= "mmp-pcm-audio",
 88	.codec_name	= "wm8994-codec",
 89	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 90				SND_SOC_DAIFMT_CBS_CFS,
 91	.ops		= &brownstone_ops,
 92},
 93};
 94
 95/* audio machine driver */
 96static struct snd_soc_card brownstone = {
 97	.name         = "brownstone",
 98	.owner        = THIS_MODULE,
 99	.dai_link     = brownstone_wm8994_dai,
100	.num_links    = ARRAY_SIZE(brownstone_wm8994_dai),
101
102	.controls = brownstone_dapm_control,
103	.num_controls = ARRAY_SIZE(brownstone_dapm_control),
104	.dapm_widgets = brownstone_dapm_widgets,
105	.num_dapm_widgets = ARRAY_SIZE(brownstone_dapm_widgets),
106	.dapm_routes = brownstone_audio_map,
107	.num_dapm_routes = ARRAY_SIZE(brownstone_audio_map),
108	.fully_routed = true,
109};
110
111static int brownstone_probe(struct platform_device *pdev)
112{
113	int ret;
114
115	brownstone.dev = &pdev->dev;
116	ret = devm_snd_soc_register_card(&pdev->dev, &brownstone);
117	if (ret)
118		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
119				ret);
120	return ret;
121}
122
123static struct platform_driver mmp_driver = {
124	.driver		= {
125		.name	= "brownstone-audio",
126		.pm     = &snd_soc_pm_ops,
127	},
128	.probe		= brownstone_probe,
129};
130
131module_platform_driver(mmp_driver);
132
133MODULE_AUTHOR("Leo Yan <leoy@marvell.com>");
134MODULE_DESCRIPTION("ALSA SoC Brownstone");
135MODULE_LICENSE("GPL");
136MODULE_ALIAS("platform:brownstone-audio");