sound/soc/samsung/rx1950_uda1380.c

   1 /*
   2  * rx1950.c  --  ALSA Soc Audio Layer
   3  *
   4  * Copyright (c) 2010 Vasily Khoruzhick <anarsoul@gmail.com>
   5  *
   6  * Based on smdk2440.c and magician.c
   7  *
   8  * Authors: Graeme Gregory graeme.gregory@wolfsonmicro.com
   9  *          Philipp Zabel <philipp.zabel@gmail.com>
  10  *          Denis Grigoriev <dgreenday@gmail.com>
  11  *          Vasily Khoruzhick <anarsoul@gmail.com>
  12  *
  13  *  This program is free software; you can redistribute  it and/or modify it
  14  *  under  the terms of  the GNU General  Public License as published by the
  15  *  Free Software Foundation;  either version 2 of the  License, or (at your
  16  *  option) any later version.
  17  *
  18  */
  19
  20 #include <linux/gpio.h>
  21
  22 #include <sound/soc.h>
  23 #include <sound/jack.h>
  24
  25 #include <plat/regs-iis.h>
  26 #include <asm/mach-types.h>
  27
  28 #include "s3c24xx-i2s.h"
  29
  30 static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd);
  31 static int rx1950_startup(struct snd_pcm_substream *substream);
  32 static int rx1950_hw_params(struct snd_pcm_substream *substream,
  33                                 struct snd_pcm_hw_params *params);
  34 static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
  35                                 struct snd_kcontrol *kcontrol, int event);
  36
  37 static unsigned int rates[] = {
  38         16000,
  39         44100,
  40         48000,
  41 };
  42
  43 static struct snd_pcm_hw_constraint_list hw_rates = {
  44         .count = ARRAY_SIZE(rates),
  45         .list = rates,
  46         .mask = 0,
  47 };
  48
  49 static struct snd_soc_jack hp_jack;
  50
  51 static struct snd_soc_jack_pin hp_jack_pins[] = {
  52         {
  53                 .pin    = "Headphone Jack",
  54                 .mask   = SND_JACK_HEADPHONE,
  55         },
  56         {
  57                 .pin    = "Speaker",
  58                 .mask   = SND_JACK_HEADPHONE,
  59                 .invert = 1,
  60         },
  61 };
  62
  63 static struct snd_soc_jack_gpio hp_jack_gpios[] = {
  64         [0] = {
  65                 .gpio                   = S3C2410_GPG(12),
  66                 .name                   = "hp-gpio",
  67                 .report                 = SND_JACK_HEADPHONE,
  68                 .invert                 = 1,
  69                 .debounce_time          = 200,
  70         },
  71 };
  72
  73 static struct snd_soc_ops rx1950_ops = {
  74         .startup        = rx1950_startup,
  75         .hw_params      = rx1950_hw_params,
  76 };
  77
  78 /* s3c24xx digital audio interface glue - connects codec <--> CPU */
  79 static struct snd_soc_dai_link rx1950_uda1380_dai[] = {
  80         {
  81                 .name           = "uda1380",
  82                 .stream_name    = "UDA1380 Duplex",
  83                 .cpu_dai_name   = "s3c24xx-iis",
  84                 .codec_dai_name = "uda1380-hifi",
  85                 .init           = rx1950_uda1380_init,
  86                 .platform_name  = "samsung-audio",
  87                 .codec_name     = "uda1380-codec.0-001a",
  88                 .ops            = &rx1950_ops,
  89         },
  90 };
  91
  92 static struct snd_soc_card rx1950_asoc = {
  93         .name = "rx1950",
  94         .dai_link = rx1950_uda1380_dai,
  95         .num_links = ARRAY_SIZE(rx1950_uda1380_dai),
  96 };
  97
  98 /* rx1950 machine dapm widgets */
  99 static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
 100         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 101         SND_SOC_DAPM_MIC("Mic Jack", NULL),
 102         SND_SOC_DAPM_SPK("Speaker", rx1950_spk_power),
 103 };
 104
 105 /* rx1950 machine audio_map */
 106 static const struct snd_soc_dapm_route audio_map[] = {
 107         /* headphone connected to VOUTLHP, VOUTRHP */
 108         {"Headphone Jack", NULL, "VOUTLHP"},
 109         {"Headphone Jack", NULL, "VOUTRHP"},
 110
 111         /* ext speaker connected to VOUTL, VOUTR  */
 112         {"Speaker", NULL, "VOUTL"},
 113         {"Speaker", NULL, "VOUTR"},
 114
 115         /* mic is connected to VINM */
 116         {"VINM", NULL, "Mic Jack"},
 117 };
 118
 119 static struct platform_device *s3c24xx_snd_device;
 120
 121 static int rx1950_startup(struct snd_pcm_substream *substream)
 122 {
 123         struct snd_pcm_runtime *runtime = substream->runtime;
 124
 125         runtime->hw.rate_min = hw_rates.list[0];
 126         runtime->hw.rate_max = hw_rates.list[hw_rates.count - 1];
 127         runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
 128
 129         return snd_pcm_hw_constraint_list(runtime, 0,
 130                                         SNDRV_PCM_HW_PARAM_RATE,
 131                                         &hw_rates);
 132 }
 133
 134 static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
 135                                 struct snd_kcontrol *kcontrol, int event)
 136 {
 137         if (SND_SOC_DAPM_EVENT_ON(event))
 138                 gpio_set_value(S3C2410_GPA(1), 1);
 139         else
 140                 gpio_set_value(S3C2410_GPA(1), 0);
 141
 142         return 0;
 143 }
 144
 145 static int rx1950_hw_params(struct snd_pcm_substream *substream,
 146                                 struct snd_pcm_hw_params *params)
 147 {
 148         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 149         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 150         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 151         int div;
 152         int ret;
 153         unsigned int rate = params_rate(params);
 154         int clk_source, fs_mode;
 155
 156         switch (rate) {
 157         case 16000:
 158         case 48000:
 159                 clk_source = S3C24XX_CLKSRC_PCLK;
 160                 fs_mode = S3C2410_IISMOD_256FS;
 161                 div = s3c24xx_i2s_get_clockrate() / (256 * rate);
 162                 if (s3c24xx_i2s_get_clockrate() % (256 * rate) > (128 * rate))
 163                         div++;
 164                 break;
 165         case 44100:
 166         case 88200:
 167                 clk_source = S3C24XX_CLKSRC_MPLL;
 168                 fs_mode = S3C2410_IISMOD_384FS;
 169                 div = 1;
 170                 break;
 171         default:
 172                 printk(KERN_ERR "%s: rate %d is not supported\n",
 173                         __func__, rate);
 174                 return -EINVAL;
 175         }
 176
 177         /* set codec DAI configuration */
 178         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
 179                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 180         if (ret < 0)
 181                 return ret;
 182
 183         /* set cpu DAI configuration */
 184         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
 185                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 186         if (ret < 0)
 187                 return ret;
 188
 189         /* select clock source */
 190         ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source, rate,
 191                         SND_SOC_CLOCK_OUT);
 192         if (ret < 0)
 193                 return ret;
 194
 195         /* set MCLK division for sample rate */
 196         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
 197                 fs_mode);
 198         if (ret < 0)
 199                 return ret;
 200
 201         /* set BCLK division for sample rate */
 202         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK,
 203                 S3C2410_IISMOD_32FS);
 204         if (ret < 0)
 205                 return ret;
 206
 207         /* set prescaler division for sample rate */
 208         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
 209                 S3C24XX_PRESCALE(div, div));
 210         if (ret < 0)
 211                 return ret;
 212
 213         return 0;
 214 }
 215
 216 static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd)
 217 {
 218         struct snd_soc_codec *codec = rtd->codec;
 219         struct snd_soc_dapm_context *dapm = &codec->dapm;
 220         int err;
 221
 222         /* Add rx1950 specific widgets */
 223         err = snd_soc_dapm_new_controls(dapm, uda1380_dapm_widgets,
 224                                   ARRAY_SIZE(uda1380_dapm_widgets));
 225
 226         if (err)
 227                 return err;
 228
 229         /* Set up rx1950 specific audio path audio_mapnects */
 230         err = snd_soc_dapm_add_routes(dapm, audio_map,
 231                                       ARRAY_SIZE(audio_map));
 232
 233         if (err)
 234                 return err;
 235
 236         snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
 237         snd_soc_dapm_enable_pin(dapm, "Speaker");
 238         snd_soc_dapm_enable_pin(dapm, "Mic Jack");
 239
 240         snd_soc_dapm_sync(dapm);
 241
 242         snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
 243                 &hp_jack);
 244
 245         snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins),
 246                 hp_jack_pins);
 247
 248         snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
 249                 hp_jack_gpios);
 250
 251         return 0;
 252 }
 253
 254 static int __init rx1950_init(void)
 255 {
 256         int ret;
 257
 258         if (!machine_is_rx1950())
 259                 return -ENODEV;
 260
 261         /* configure some gpios */
 262         ret = gpio_request(S3C2410_GPA(1), "speaker-power");
 263         if (ret)
 264                 goto err_gpio;
 265
 266         ret = gpio_direction_output(S3C2410_GPA(1), 0);
 267         if (ret)
 268                 goto err_gpio_conf;
 269
 270         s3c24xx_snd_device = platform_device_alloc("soc-audio", -1);
 271         if (!s3c24xx_snd_device) {
 272                 ret = -ENOMEM;
 273                 goto err_plat_alloc;
 274         }
 275
 276         platform_set_drvdata(s3c24xx_snd_device, &rx1950_asoc);
 277         ret = platform_device_add(s3c24xx_snd_device);
 278
 279         if (ret) {
 280                 platform_device_put(s3c24xx_snd_device);
 281                 goto err_plat_add;
 282         }
 283
 284         return 0;
 285
 286 err_plat_add:
 287 err_plat_alloc:
 288 err_gpio_conf:
 289         gpio_free(S3C2410_GPA(1));
 290
 291 err_gpio:
 292         return ret;
 293 }
 294
 295 static void __exit rx1950_exit(void)
 296 {
 297         platform_device_unregister(s3c24xx_snd_device);
 298         snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
 299                 hp_jack_gpios);
 300         gpio_free(S3C2410_GPA(1));
 301 }
 302
 303 module_init(rx1950_init);
 304 module_exit(rx1950_exit);
 305
 306 /* Module information */
 307 MODULE_AUTHOR("Vasily Khoruzhick");
 308 MODULE_DESCRIPTION("ALSA SoC RX1950");
 309 MODULE_LICENSE("GPL");