linux/sound/soc/samsung/lowland.c
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   1/*
   2 * Lowland audio support
   3 *
   4 * Copyright 2011 Wolfson Microelectronics
   5 *
   6 * This program is free software; you can redistribute  it and/or modify it
   7 * under  the terms of  the GNU General  Public License as published by the
   8 * Free Software Foundation;  either version 2 of the  License, or (at your
   9 * option) any later version.
  10 */
  11
  12#include <sound/soc.h>
  13#include <sound/soc-dapm.h>
  14#include <sound/jack.h>
  15#include <linux/gpio.h>
  16#include <linux/module.h>
  17
  18#include "../codecs/wm5100.h"
  19#include "../codecs/wm9081.h"
  20
  21#define MCLK1_RATE (44100 * 512)
  22#define CLKOUT_RATE (44100 * 256)
  23
  24static struct snd_soc_jack lowland_headset;
  25
  26/* Headset jack detection DAPM pins */
  27static struct snd_soc_jack_pin lowland_headset_pins[] = {
  28        {
  29                .pin = "Headphone",
  30                .mask = SND_JACK_HEADPHONE | SND_JACK_LINEOUT,
  31        },
  32        {
  33                .pin = "Headset Mic",
  34                .mask = SND_JACK_MICROPHONE,
  35        },
  36};
  37
  38static int lowland_wm5100_init(struct snd_soc_pcm_runtime *rtd)
  39{
  40        struct snd_soc_codec *codec = rtd->codec;
  41        int ret;
  42
  43        ret = snd_soc_codec_set_sysclk(codec, WM5100_CLK_SYSCLK,
  44                                       WM5100_CLKSRC_MCLK1, MCLK1_RATE,
  45                                       SND_SOC_CLOCK_IN);
  46        if (ret < 0) {
  47                pr_err("Failed to set SYSCLK clock source: %d\n", ret);
  48                return ret;
  49        }
  50
  51        /* Clock OPCLK, used by the other audio components. */
  52        ret = snd_soc_codec_set_sysclk(codec, WM5100_CLK_OPCLK, 0,
  53                                       CLKOUT_RATE, 0);
  54        if (ret < 0) {
  55                pr_err("Failed to set OPCLK rate: %d\n", ret);
  56                return ret;
  57        }
  58
  59        ret = snd_soc_jack_new(codec, "Headset",
  60                               SND_JACK_LINEOUT | SND_JACK_HEADSET |
  61                               SND_JACK_BTN_0,
  62                               &lowland_headset);
  63        if (ret)
  64                return ret;
  65
  66        ret = snd_soc_jack_add_pins(&lowland_headset,
  67                                    ARRAY_SIZE(lowland_headset_pins),
  68                                    lowland_headset_pins);
  69        if (ret)
  70                return ret;
  71
  72        wm5100_detect(codec, &lowland_headset);
  73
  74        return 0;
  75}
  76
  77static int lowland_wm9081_init(struct snd_soc_pcm_runtime *rtd)
  78{
  79        struct snd_soc_codec *codec = rtd->codec;
  80
  81        snd_soc_dapm_nc_pin(&codec->dapm, "LINEOUT");
  82
  83        /* At any time the WM9081 is active it will have this clock */
  84        return snd_soc_codec_set_sysclk(codec, WM9081_SYSCLK_MCLK, 0,
  85                                        CLKOUT_RATE, 0);
  86}
  87
  88static const struct snd_soc_pcm_stream sub_params = {
  89        .formats = SNDRV_PCM_FMTBIT_S32_LE,
  90        .rate_min = 44100,
  91        .rate_max = 44100,
  92        .channels_min = 2,
  93        .channels_max = 2,
  94};
  95
  96static struct snd_soc_dai_link lowland_dai[] = {
  97        {
  98                .name = "CPU",
  99                .stream_name = "CPU",
 100                .cpu_dai_name = "samsung-i2s.0",
 101                .codec_dai_name = "wm5100-aif1",
 102                .platform_name = "samsung-i2s.0",
 103                .codec_name = "wm5100.1-001a",
 104                .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 105                                SND_SOC_DAIFMT_CBM_CFM,
 106                .init = lowland_wm5100_init,
 107        },
 108        {
 109                .name = "Baseband",
 110                .stream_name = "Baseband",
 111                .cpu_dai_name = "wm5100-aif2",
 112                .codec_dai_name = "wm1250-ev1",
 113                .codec_name = "wm1250-ev1.1-0027",
 114                .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 115                                SND_SOC_DAIFMT_CBM_CFM,
 116                .ignore_suspend = 1,
 117        },
 118        {
 119                .name = "Sub Speaker",
 120                .stream_name = "Sub Speaker",
 121                .cpu_dai_name = "wm5100-aif3",
 122                .codec_dai_name = "wm9081-hifi",
 123                .codec_name = "wm9081.1-006c",
 124                .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 125                                SND_SOC_DAIFMT_CBM_CFM,
 126                .ignore_suspend = 1,
 127                .params = &sub_params,
 128                .init = lowland_wm9081_init,
 129        },
 130};
 131
 132static struct snd_soc_codec_conf lowland_codec_conf[] = {
 133        {
 134                .dev_name = "wm9081.1-006c",
 135                .name_prefix = "Sub",
 136        },
 137};
 138
 139static const struct snd_kcontrol_new controls[] = {
 140        SOC_DAPM_PIN_SWITCH("Main Speaker"),
 141        SOC_DAPM_PIN_SWITCH("Main DMIC"),
 142        SOC_DAPM_PIN_SWITCH("Main AMIC"),
 143        SOC_DAPM_PIN_SWITCH("WM1250 Input"),
 144        SOC_DAPM_PIN_SWITCH("WM1250 Output"),
 145        SOC_DAPM_PIN_SWITCH("Headphone"),
 146};
 147
 148static struct snd_soc_dapm_widget widgets[] = {
 149        SND_SOC_DAPM_HP("Headphone", NULL),
 150        SND_SOC_DAPM_MIC("Headset Mic", NULL),
 151
 152        SND_SOC_DAPM_SPK("Main Speaker", NULL),
 153
 154        SND_SOC_DAPM_MIC("Main AMIC", NULL),
 155        SND_SOC_DAPM_MIC("Main DMIC", NULL),
 156};
 157
 158static struct snd_soc_dapm_route audio_paths[] = {
 159        { "Sub IN1", NULL, "HPOUT2L" },
 160        { "Sub IN2", NULL, "HPOUT2R" },
 161
 162        { "Main Speaker", NULL, "Sub SPKN" },
 163        { "Main Speaker", NULL, "Sub SPKP" },
 164        { "Main Speaker", NULL, "SPKDAT1" },
 165};
 166
 167static struct snd_soc_card lowland = {
 168        .name = "Lowland",
 169        .owner = THIS_MODULE,
 170        .dai_link = lowland_dai,
 171        .num_links = ARRAY_SIZE(lowland_dai),
 172        .codec_conf = lowland_codec_conf,
 173        .num_configs = ARRAY_SIZE(lowland_codec_conf),
 174
 175        .controls = controls,
 176        .num_controls = ARRAY_SIZE(controls),
 177        .dapm_widgets = widgets,
 178        .num_dapm_widgets = ARRAY_SIZE(widgets),
 179        .dapm_routes = audio_paths,
 180        .num_dapm_routes = ARRAY_SIZE(audio_paths),
 181};
 182
 183static int lowland_probe(struct platform_device *pdev)
 184{
 185        struct snd_soc_card *card = &lowland;
 186        int ret;
 187
 188        card->dev = &pdev->dev;
 189
 190        ret = snd_soc_register_card(card);
 191        if (ret) {
 192                dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 193                        ret);
 194                return ret;
 195        }
 196
 197        return 0;
 198}
 199
 200static int lowland_remove(struct platform_device *pdev)
 201{
 202        struct snd_soc_card *card = platform_get_drvdata(pdev);
 203
 204        snd_soc_unregister_card(card);
 205
 206        return 0;
 207}
 208
 209static struct platform_driver lowland_driver = {
 210        .driver = {
 211                .name = "lowland",
 212                .owner = THIS_MODULE,
 213                .pm = &snd_soc_pm_ops,
 214        },
 215        .probe = lowland_probe,
 216        .remove = lowland_remove,
 217};
 218
 219module_platform_driver(lowland_driver);
 220
 221MODULE_DESCRIPTION("Lowland audio support");
 222MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 223MODULE_LICENSE("GPL");
 224MODULE_ALIAS("platform:lowland");
 225