sound/soc/samsung/smartq_wm8987.c

   1 /* sound/soc/samsung/smartq_wm8987.c
   2  *
   3  * Copyright 2010 Maurus Cuelenaere <mcuelenaere@gmail.com>
   4  *
   5  * Based on smdk6410_wm8987.c
   6  *     Copyright 2007 Wolfson Microelectronics PLC. - linux@wolfsonmicro.com
   7  *     Graeme Gregory - graeme.gregory@wolfsonmicro.com
   8  *
   9  *  This program is free software; you can redistribute  it and/or modify it
  10  *  under  the terms of  the GNU General  Public License as published by the
  11  *  Free Software Foundation;  either version 2 of the  License, or (at your
  12  *  option) any later version.
  13  *
  14  */
  15
  16 #include <linux/module.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/gpio.h>
  19
  20 #include <sound/pcm.h>
  21 #include <sound/pcm_params.h>
  22 #include <sound/soc.h>
  23 #include <sound/jack.h>
  24
  25 #include <asm/mach-types.h>
  26
  27 #include "dma.h"
  28 #include "i2s.h"
  29
  30 #include "../codecs/wm8750.h"
  31
  32 /*
  33  * WM8987 is register compatible with WM8750, so using that as base driver.
  34  */
  35
  36 static struct snd_soc_card snd_soc_smartq;
  37
  38 static int smartq_hifi_hw_params(struct snd_pcm_substream *substream,
  39         struct snd_pcm_hw_params *params)
  40 {
  41         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  42         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  43         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  44         unsigned int clk = 0;
  45         int ret;
  46
  47         switch (params_rate(params)) {
  48         case 8000:
  49         case 16000:
  50         case 32000:
  51         case 48000:
  52         case 96000:
  53                 clk = 12288000;
  54                 break;
  55         case 11025:
  56         case 22050:
  57         case 44100:
  58         case 88200:
  59                 clk = 11289600;
  60                 break;
  61         }
  62
  63         /* set codec DAI configuration */
  64         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
  65                                              SND_SOC_DAIFMT_NB_NF |
  66                                              SND_SOC_DAIFMT_CBS_CFS);
  67         if (ret < 0)
  68                 return ret;
  69
  70         /* set cpu DAI configuration */
  71         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
  72                                            SND_SOC_DAIFMT_NB_NF |
  73                                            SND_SOC_DAIFMT_CBS_CFS);
  74         if (ret < 0)
  75                 return ret;
  76
  77         /* Use PCLK for I2S signal generation */
  78         ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
  79                                         0, SND_SOC_CLOCK_IN);
  80         if (ret < 0)
  81                 return ret;
  82
  83         /* Gate the RCLK output on PAD */
  84         ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK,
  85                                         0, SND_SOC_CLOCK_IN);
  86         if (ret < 0)
  87                 return ret;
  88
  89         /* set the codec system clock for DAC and ADC */
  90         ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
  91                                      SND_SOC_CLOCK_IN);
  92         if (ret < 0)
  93                 return ret;
  94
  95         return 0;
  96 }
  97
  98 /*
  99  * SmartQ WM8987 HiFi DAI operations.
 100  */
 101 static struct snd_soc_ops smartq_hifi_ops = {
 102         .hw_params = smartq_hifi_hw_params,
 103 };
 104
 105 static struct snd_soc_jack smartq_jack;
 106
 107 static struct snd_soc_jack_pin smartq_jack_pins[] = {
 108         /* Disable speaker when headphone is plugged in */
 109         {
 110                 .pin    = "Internal Speaker",
 111                 .mask   = SND_JACK_HEADPHONE,
 112         },
 113 };
 114
 115 static struct snd_soc_jack_gpio smartq_jack_gpios[] = {
 116         {
 117                 .gpio           = S3C64XX_GPL(12),
 118                 .name           = "headphone detect",
 119                 .report         = SND_JACK_HEADPHONE,
 120                 .debounce_time  = 200,
 121         },
 122 };
 123
 124 static const struct snd_kcontrol_new wm8987_smartq_controls[] = {
 125         SOC_DAPM_PIN_SWITCH("Internal Speaker"),
 126         SOC_DAPM_PIN_SWITCH("Headphone Jack"),
 127         SOC_DAPM_PIN_SWITCH("Internal Mic"),
 128 };
 129
 130 static int smartq_speaker_event(struct snd_soc_dapm_widget *w,
 131                                 struct snd_kcontrol *k,
 132                                 int event)
 133 {
 134         gpio_set_value(S3C64XX_GPK(12), SND_SOC_DAPM_EVENT_OFF(event));
 135
 136         return 0;
 137 }
 138
 139 static const struct snd_soc_dapm_widget wm8987_dapm_widgets[] = {
 140         SND_SOC_DAPM_SPK("Internal Speaker", smartq_speaker_event),
 141         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 142         SND_SOC_DAPM_MIC("Internal Mic", NULL),
 143 };
 144
 145 static const struct snd_soc_dapm_route audio_map[] = {
 146         {"Headphone Jack", NULL, "LOUT2"},
 147         {"Headphone Jack", NULL, "ROUT2"},
 148
 149         {"Internal Speaker", NULL, "LOUT2"},
 150         {"Internal Speaker", NULL, "ROUT2"},
 151
 152         {"Mic Bias", NULL, "Internal Mic"},
 153         {"LINPUT2", NULL, "Mic Bias"},
 154 };
 155
 156 static int smartq_wm8987_init(struct snd_soc_pcm_runtime *rtd)
 157 {
 158         struct snd_soc_codec *codec = rtd->codec;
 159         struct snd_soc_dapm_context *dapm = &codec->dapm;
 160         int err = 0;
 161
 162         /* Add SmartQ specific widgets */
 163         snd_soc_dapm_new_controls(dapm, wm8987_dapm_widgets,
 164                                   ARRAY_SIZE(wm8987_dapm_widgets));
 165
 166         /* add SmartQ specific controls */
 167         err = snd_soc_add_controls(codec, wm8987_smartq_controls,
 168                                    ARRAY_SIZE(wm8987_smartq_controls));
 169
 170         if (err < 0)
 171                 return err;
 172
 173         /* setup SmartQ specific audio path */
 174         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 175
 176         /* set endpoints to not connected */
 177         snd_soc_dapm_nc_pin(dapm, "LINPUT1");
 178         snd_soc_dapm_nc_pin(dapm, "RINPUT1");
 179         snd_soc_dapm_nc_pin(dapm, "OUT3");
 180         snd_soc_dapm_nc_pin(dapm, "ROUT1");
 181
 182         /* set endpoints to default off mode */
 183         snd_soc_dapm_enable_pin(dapm, "Internal Speaker");
 184         snd_soc_dapm_enable_pin(dapm, "Internal Mic");
 185         snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
 186
 187         err = snd_soc_dapm_sync(dapm);
 188         if (err)
 189                 return err;
 190
 191         /* Headphone jack detection */
 192         err = snd_soc_jack_new(codec, "Headphone Jack",
 193                                SND_JACK_HEADPHONE, &smartq_jack);
 194         if (err)
 195                 return err;
 196
 197         err = snd_soc_jack_add_pins(&smartq_jack, ARRAY_SIZE(smartq_jack_pins),
 198                                     smartq_jack_pins);
 199         if (err)
 200                 return err;
 201
 202         err = snd_soc_jack_add_gpios(&smartq_jack,
 203                                      ARRAY_SIZE(smartq_jack_gpios),
 204                                      smartq_jack_gpios);
 205
 206         return err;
 207 }
 208
 209 static struct snd_soc_dai_link smartq_dai[] = {
 210         {
 211                 .name           = "wm8987",
 212                 .stream_name    = "SmartQ Hi-Fi",
 213                 .cpu_dai_name   = "samsung-i2s.0",
 214                 .codec_dai_name = "wm8750-hifi",
 215                 .platform_name  = "samsung-audio",
 216                 .codec_name     = "wm8750-codec.0-0x1a",
 217                 .init           = smartq_wm8987_init,
 218                 .ops            = &smartq_hifi_ops,
 219         },
 220 };
 221
 222 static struct snd_soc_card snd_soc_smartq = {
 223         .name = "SmartQ",
 224         .dai_link = smartq_dai,
 225         .num_links = ARRAY_SIZE(smartq_dai),
 226 };
 227
 228 static struct platform_device *smartq_snd_device;
 229
 230 static int __init smartq_init(void)
 231 {
 232         int ret;
 233
 234         if (!machine_is_smartq7() && !machine_is_smartq5()) {
 235                 pr_info("Only SmartQ is supported by this ASoC driver\n");
 236                 return -ENODEV;
 237         }
 238
 239         smartq_snd_device = platform_device_alloc("soc-audio", -1);
 240         if (!smartq_snd_device)
 241                 return -ENOMEM;
 242
 243         platform_set_drvdata(smartq_snd_device, &snd_soc_smartq);
 244
 245         ret = platform_device_add(smartq_snd_device);
 246         if (ret) {
 247                 platform_device_put(smartq_snd_device);
 248                 return ret;
 249         }
 250
 251         /* Initialise GPIOs used by amplifiers */
 252         ret = gpio_request(S3C64XX_GPK(12), "amplifiers shutdown");
 253         if (ret) {
 254                 dev_err(&smartq_snd_device->dev, "Failed to register GPK12\n");
 255                 goto err_unregister_device;
 256         }
 257
 258         /* Disable amplifiers */
 259         ret = gpio_direction_output(S3C64XX_GPK(12), 1);
 260         if (ret) {
 261                 dev_err(&smartq_snd_device->dev, "Failed to configure GPK12\n");
 262                 goto err_free_gpio_amp_shut;
 263         }
 264
 265         return 0;
 266
 267 err_free_gpio_amp_shut:
 268         gpio_free(S3C64XX_GPK(12));
 269 err_unregister_device:
 270         platform_device_unregister(smartq_snd_device);
 271
 272         return ret;
 273 }
 274
 275 static void __exit smartq_exit(void)
 276 {
 277         gpio_free(S3C64XX_GPK(12));
 278         snd_soc_jack_free_gpios(&smartq_jack, ARRAY_SIZE(smartq_jack_gpios),
 279                                 smartq_jack_gpios);
 280
 281         platform_device_unregister(smartq_snd_device);
 282 }
 283
 284 module_init(smartq_init);
 285 module_exit(smartq_exit);
 286
 287 /* Module information */
 288 MODULE_AUTHOR("Maurus Cuelenaere <mcuelenaere@gmail.com>");
 289 MODULE_DESCRIPTION("ALSA SoC SmartQ WM8987");
 290 MODULE_LICENSE("GPL");