sound/soc/s3c24xx/smartq_wm8987.c

   1 /* sound/soc/s3c24xx/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-dapm.h>
  23 #include <sound/jack.h>
  24
  25 #include <asm/mach-types.h>
  26
  27 #include "s3c-dma.h"
  28 #include "s3c64xx-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->dai->codec_dai;
  43         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
  44         struct s3c_i2sv2_rate_calc div;
  45         unsigned int clk = 0;
  46         int ret;
  47
  48         s3c_i2sv2_iis_calc_rate(&div, NULL, params_rate(params),
  49                                 s3c_i2sv2_get_clock(cpu_dai));
  50
  51         switch (params_rate(params)) {
  52         case 8000:
  53         case 16000:
  54         case 32000:
  55         case 48000:
  56         case 96000:
  57                 clk = 12288000;
  58                 break;
  59         case 11025:
  60         case 22050:
  61         case 44100:
  62         case 88200:
  63                 clk = 11289600;
  64                 break;
  65         }
  66
  67         /* set codec DAI configuration */
  68         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
  69                                              SND_SOC_DAIFMT_NB_NF |
  70                                              SND_SOC_DAIFMT_CBS_CFS);
  71         if (ret < 0)
  72                 return ret;
  73
  74         /* set cpu DAI configuration */
  75         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
  76                                            SND_SOC_DAIFMT_NB_NF |
  77                                            SND_SOC_DAIFMT_CBS_CFS);
  78         if (ret < 0)
  79                 return ret;
  80
  81         /* set the codec system clock for DAC and ADC */
  82         ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
  83                                      SND_SOC_CLOCK_IN);
  84         if (ret < 0)
  85                 return ret;
  86
  87         /* set MCLK division for sample rate */
  88         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_I2SV2_DIV_RCLK, div.fs_div);
  89         if (ret < 0)
  90                 return ret;
  91
  92         /* set prescaler division for sample rate */
  93         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_I2SV2_DIV_PRESCALER,
  94                                      div.clk_div - 1);
  95         if (ret < 0)
  96                 return ret;
  97
  98         return 0;
  99 }
 100
 101 /*
 102  * SmartQ WM8987 HiFi DAI operations.
 103  */
 104 static struct snd_soc_ops smartq_hifi_ops = {
 105         .hw_params = smartq_hifi_hw_params,
 106 };
 107
 108 static struct snd_soc_jack smartq_jack;
 109
 110 static struct snd_soc_jack_pin smartq_jack_pins[] = {
 111         /* Disable speaker when headphone is plugged in */
 112         {
 113                 .pin    = "Internal Speaker",
 114                 .mask   = SND_JACK_HEADPHONE,
 115         },
 116 };
 117
 118 static struct snd_soc_jack_gpio smartq_jack_gpios[] = {
 119         {
 120                 .gpio           = S3C64XX_GPL(12),
 121                 .name           = "headphone detect",
 122                 .report         = SND_JACK_HEADPHONE,
 123                 .debounce_time  = 200,
 124         },
 125 };
 126
 127 static const struct snd_kcontrol_new wm8987_smartq_controls[] = {
 128         SOC_DAPM_PIN_SWITCH("Internal Speaker"),
 129         SOC_DAPM_PIN_SWITCH("Headphone Jack"),
 130         SOC_DAPM_PIN_SWITCH("Internal Mic"),
 131 };
 132
 133 static int smartq_speaker_event(struct snd_soc_dapm_widget *w,
 134                                 struct snd_kcontrol *k,
 135                                 int event)
 136 {
 137         gpio_set_value(S3C64XX_GPK(12), SND_SOC_DAPM_EVENT_OFF(event));
 138
 139         return 0;
 140 }
 141
 142 static const struct snd_soc_dapm_widget wm8987_dapm_widgets[] = {
 143         SND_SOC_DAPM_SPK("Internal Speaker", smartq_speaker_event),
 144         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 145         SND_SOC_DAPM_MIC("Internal Mic", NULL),
 146 };
 147
 148 static const struct snd_soc_dapm_route audio_map[] = {
 149         {"Headphone Jack", NULL, "LOUT2"},
 150         {"Headphone Jack", NULL, "ROUT2"},
 151
 152         {"Internal Speaker", NULL, "LOUT2"},
 153         {"Internal Speaker", NULL, "ROUT2"},
 154
 155         {"Mic Bias", NULL, "Internal Mic"},
 156         {"LINPUT2", NULL, "Mic Bias"},
 157 };
 158
 159 static int smartq_wm8987_init(struct snd_soc_codec *codec)
 160 {
 161         int err = 0;
 162
 163         /* Add SmartQ specific widgets */
 164         snd_soc_dapm_new_controls(codec, wm8987_dapm_widgets,
 165                                   ARRAY_SIZE(wm8987_dapm_widgets));
 166
 167         /* add SmartQ specific controls */
 168         err = snd_soc_add_controls(codec, wm8987_smartq_controls,
 169                                    ARRAY_SIZE(wm8987_smartq_controls));
 170
 171         if (err < 0)
 172                 return err;
 173
 174         /* setup SmartQ specific audio path */
 175         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 176
 177         /* set endpoints to not connected */
 178         snd_soc_dapm_nc_pin(codec, "LINPUT1");
 179         snd_soc_dapm_nc_pin(codec, "RINPUT1");
 180         snd_soc_dapm_nc_pin(codec, "OUT3");
 181         snd_soc_dapm_nc_pin(codec, "ROUT1");
 182
 183         /* set endpoints to default off mode */
 184         snd_soc_dapm_enable_pin(codec, "Internal Speaker");
 185         snd_soc_dapm_enable_pin(codec, "Internal Mic");
 186         snd_soc_dapm_disable_pin(codec, "Headphone Jack");
 187
 188         err = snd_soc_dapm_sync(codec);
 189         if (err)
 190                 return err;
 191
 192         /* Headphone jack detection */
 193         err = snd_soc_jack_new(&snd_soc_smartq, "Headphone Jack",
 194                                SND_JACK_HEADPHONE, &smartq_jack);
 195         if (err)
 196                 return err;
 197
 198         err = snd_soc_jack_add_pins(&smartq_jack, ARRAY_SIZE(smartq_jack_pins),
 199                                     smartq_jack_pins);
 200         if (err)
 201                 return err;
 202
 203         err = snd_soc_jack_add_gpios(&smartq_jack,
 204                                      ARRAY_SIZE(smartq_jack_gpios),
 205                                      smartq_jack_gpios);
 206
 207         return err;
 208 }
 209
 210 static struct snd_soc_dai_link smartq_dai[] = {
 211         {
 212                 .name           = "wm8987",
 213                 .stream_name    = "SmartQ Hi-Fi",
 214                 .cpu_dai_name   = "s3c64xx-i2s.0",
 215                 .codec_dai_name = "wm8750-hifi",
 216                 .platform_name  = "s3c24xx-pcm-audio",
 217                 .codec_name     = "wm8750-codec.0-0x1a",
 218                 .init           = smartq_wm8987_init,
 219                 .ops            = &smartq_hifi_ops,
 220         },
 221 };
 222
 223 static struct snd_soc_card snd_soc_smartq = {
 224         .name = "SmartQ",
 225         .dai_link = smartq_dai,
 226         .num_links = ARRAY_SIZE(smartq_dai),
 227 };
 228
 229 static struct platform_device *smartq_snd_device;
 230
 231 static int __init smartq_init(void)
 232 {
 233         int ret;
 234
 235         if (!machine_is_smartq7() && !machine_is_smartq5()) {
 236                 pr_info("Only SmartQ is supported by this ASoC driver\n");
 237                 return -ENODEV;
 238         }
 239
 240         smartq_snd_device = platform_device_alloc("soc-audio", -1);
 241         if (!smartq_snd_device)
 242                 return -ENOMEM;
 243
 244         platform_set_drvdata(smartq_snd_device, &snd_soc_smartq);
 245
 246         ret = platform_device_add(smartq_snd_device);
 247         if (ret) {
 248                 platform_device_put(smartq_snd_device);
 249                 return ret;
 250         }
 251
 252         /* Initialise GPIOs used by amplifiers */
 253         ret = gpio_request(S3C64XX_GPK(12), "amplifiers shutdown");
 254         if (ret) {
 255                 dev_err(&smartq_snd_device->dev, "Failed to register GPK12\n");
 256                 goto err_unregister_device;
 257         }
 258
 259         /* Disable amplifiers */
 260         ret = gpio_direction_output(S3C64XX_GPK(12), 1);
 261         if (ret) {
 262                 dev_err(&smartq_snd_device->dev, "Failed to configure GPK12\n");
 263                 goto err_free_gpio_amp_shut;
 264         }
 265
 266         return 0;
 267
 268 err_free_gpio_amp_shut:
 269         gpio_free(S3C64XX_GPK(12));
 270 err_unregister_device:
 271         platform_device_unregister(smartq_snd_device);
 272
 273         return ret;
 274 }
 275
 276 static void __exit smartq_exit(void)
 277 {
 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");