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