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