speyside_wm8962.c 6.0 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260
/*
 * Speyside with WM8962 audio support
 *
 * Copyright 2011 Wolfson Microelectronics
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */

#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/jack.h>
#include <linux/gpio.h>

#include "../codecs/wm8962.h"

static int speyside_wm8962_set_bias_level(struct snd_soc_card *card,
					  struct snd_soc_dapm_context *dapm,
					  enum snd_soc_bias_level level)
{
	struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
	int ret;

	switch (level) {
	case SND_SOC_BIAS_PREPARE:
		if (dapm->bias_level == SND_SOC_BIAS_STANDBY) {
			ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
						  WM8962_FLL_MCLK, 32768,
						  44100 * 256);
			if (ret < 0)
				pr_err("Failed to start FLL\n");

			ret = snd_soc_dai_set_sysclk(codec_dai,
						     WM8962_SYSCLK_FLL,
						     44100 * 256,
						     SND_SOC_CLOCK_IN);
			if (ret < 0)
				return ret;
		}
		break;

	default:
		break;
	}

	return 0;
}

static int speyside_wm8962_set_bias_level_post(struct snd_soc_card *card,
					       struct snd_soc_dapm_context *dapm,
					       enum snd_soc_bias_level level)
{
	struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
	int ret;

	switch (level) {
	case SND_SOC_BIAS_STANDBY:
		ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK,
					     32768, SND_SOC_CLOCK_IN);
		if (ret < 0)
			return ret;

		ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
					  0, 0, 0);
		if (ret < 0) {
			pr_err("Failed to stop FLL\n");
			return ret;
		}
		break;

	default:
		break;
	}

	dapm->bias_level = level;

	return 0;
}

static int speyside_wm8962_hw_params(struct snd_pcm_substream *substream,
			      struct snd_pcm_hw_params *params)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	int ret;

	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
					 | SND_SOC_DAIFMT_NB_NF
					 | SND_SOC_DAIFMT_CBM_CFM);
	if (ret < 0)
		return ret;

	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
					 | SND_SOC_DAIFMT_NB_NF
					 | SND_SOC_DAIFMT_CBM_CFM);
	if (ret < 0)
		return ret;

	return 0;
}

static struct snd_soc_ops speyside_wm8962_ops = {
	.hw_params = speyside_wm8962_hw_params,
};

static struct snd_soc_dai_link speyside_wm8962_dai[] = {
	{
		.name = "CPU",
		.stream_name = "CPU",
		.cpu_dai_name = "samsung-i2s.0",
		.codec_dai_name = "wm8962",
		.platform_name = "samsung-audio",
		.codec_name = "wm8962.1-001a",
		.ops = &speyside_wm8962_ops,
	},
};

static const struct snd_kcontrol_new controls[] = {
	SOC_DAPM_PIN_SWITCH("Main Speaker"),
};

static struct snd_soc_dapm_widget widgets[] = {
	SND_SOC_DAPM_HP("Headphone", NULL),
	SND_SOC_DAPM_MIC("Headset Mic", NULL),

	SND_SOC_DAPM_MIC("DMIC", NULL),

	SND_SOC_DAPM_SPK("Main Speaker", NULL),
};

static struct snd_soc_dapm_route audio_paths[] = {
	{ "Headphone", NULL, "HPOUTL" },
	{ "Headphone", NULL, "HPOUTR" },

	{ "Main Speaker", NULL, "SPKOUTL" },
	{ "Main Speaker", NULL, "SPKOUTR" },

	{ "MICBIAS", NULL, "Headset Mic" },
	{ "IN4L", NULL, "MICBIAS" },
	{ "IN4R", NULL, "MICBIAS" },

	{ "MICBIAS", NULL, "DMIC" },
	{ "DMICDAT", NULL, "MICBIAS" },
};

static struct snd_soc_jack speyside_wm8962_headset;

/* Headset jack detection DAPM pins */
static struct snd_soc_jack_pin speyside_wm8962_headset_pins[] = {
	{
		.pin = "Headset Mic",
		.mask = SND_JACK_MICROPHONE,
	},
	{
		.pin = "Headphone",
		.mask = SND_JACK_MICROPHONE,
	},
};

static int speyside_wm8962_late_probe(struct snd_soc_card *card)
{
	struct snd_soc_codec *codec = card->rtd[0].codec;
	struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
	int ret;

	ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK,
				     32768, SND_SOC_CLOCK_IN);
	if (ret < 0)
		return ret;

	ret = snd_soc_jack_new(codec, "Headset",
			       SND_JACK_HEADSET | SND_JACK_BTN_0,
			       &speyside_wm8962_headset);
	if (ret)
		return ret;

	ret = snd_soc_jack_add_pins(&speyside_wm8962_headset,
				    ARRAY_SIZE(speyside_wm8962_headset_pins),
				    speyside_wm8962_headset_pins);
	if (ret)
		return ret;

	wm8962_mic_detect(codec, &speyside_wm8962_headset);

	return 0;
}

static struct snd_soc_card speyside_wm8962 = {
	.name = "Speyside WM8962",
	.dai_link = speyside_wm8962_dai,
	.num_links = ARRAY_SIZE(speyside_wm8962_dai),

	.set_bias_level = speyside_wm8962_set_bias_level,
	.set_bias_level_post = speyside_wm8962_set_bias_level_post,

	.controls = controls,
	.num_controls = ARRAY_SIZE(controls),
	.dapm_widgets = widgets,
	.num_dapm_widgets = ARRAY_SIZE(widgets),
	.dapm_routes = audio_paths,
	.num_dapm_routes = ARRAY_SIZE(audio_paths),

	.late_probe = speyside_wm8962_late_probe,
};

static __devinit int speyside_wm8962_probe(struct platform_device *pdev)
{
	struct snd_soc_card *card = &speyside_wm8962;
	int ret;

	card->dev = &pdev->dev;

	ret = snd_soc_register_card(card);
	if (ret) {
		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
			ret);
		return ret;
	}

	return 0;
}

static int __devexit speyside_wm8962_remove(struct platform_device *pdev)
{
	struct snd_soc_card *card = platform_get_drvdata(pdev);

	snd_soc_unregister_card(card);

	return 0;
}

static struct platform_driver speyside_wm8962_driver = {
	.driver = {
		.name = "speyside-wm8962",
		.owner = THIS_MODULE,
		.pm = &snd_soc_pm_ops,
	},
	.probe = speyside_wm8962_probe,
	.remove = __devexit_p(speyside_wm8962_remove),
};

static int __init speyside_wm8962_audio_init(void)
{
	return platform_driver_register(&speyside_wm8962_driver);
}
module_init(speyside_wm8962_audio_init);

static void __exit speyside_wm8962_audio_exit(void)
{
	platform_driver_unregister(&speyside_wm8962_driver);
}
module_exit(speyside_wm8962_audio_exit);

MODULE_DESCRIPTION("Speyside WM8962 audio support");
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:speyside-wm8962");
新手
引导
客服 返回
顶部