sound/soc/s3c24xx/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/module.h>
  21 #include <linux/moduleparam.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/i2c.h>
  24 #include <linux/gpio.h>
  25 #include <linux/clk.h>
  26
  27 #include <sound/soc.h>
  28 #include <sound/uda1380.h>
  29 #include <sound/jack.h>
  30
  31 #include <plat/regs-iis.h>
  32
  33 #include <mach/regs-clock.h>
  34
  35 #include <asm/mach-types.h>
  36
  37 #include "s3c-dma.h"
  38 #include "s3c24xx-i2s.h"
  39 #include "../codecs/uda1380.h"
  40
  41 static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd);
  42 static int rx1950_startup(struct snd_pcm_substream *substream);
  43 static int rx1950_hw_params(struct snd_pcm_substream *substream,
  44                                 struct snd_pcm_hw_params *params);
  45 static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
  46                                 struct snd_kcontrol *kcontrol, int event);
  47
  48 static unsigned int rates[] = {
  49         16000,
  50         44100,
  51         48000,
  52 };
  53
  54 static struct snd_pcm_hw_constraint_list hw_rates = {
  55         .count = ARRAY_SIZE(rates),
  56         .list = rates,
  57         .mask = 0,
  58 };
  59
  60 static struct snd_soc_jack hp_jack;
  61
  62 static struct snd_soc_jack_pin hp_jack_pins[] = {
  63         {
  64                 .pin    = "Headphone Jack",
  65                 .mask   = SND_JACK_HEADPHONE,
  66         },
  67         {
  68                 .pin    = "Speaker",
  69                 .mask   = SND_JACK_HEADPHONE,
  70                 .invert = 1,
  71         },
  72 };
  73
  74 static struct snd_soc_jack_gpio hp_jack_gpios[] = {
  75         [0] = {
  76                 .gpio                   = S3C2410_GPG(12),
  77                 .name                   = "hp-gpio",
  78                 .report                 = SND_JACK_HEADPHONE,
  79                 .invert                 = 1,
  80                 .debounce_time          = 200,
  81         },
  82 };
  83
  84 static struct snd_soc_ops rx1950_ops = {
  85         .startup        = rx1950_startup,
  86         .hw_params      = rx1950_hw_params,
  87 };
  88
  89 /* s3c24xx digital audio interface glue - connects codec <--> CPU */
  90 static struct snd_soc_dai_link rx1950_uda1380_dai[] = {
  91         {
  92                 .name           = "uda1380",
  93                 .stream_name    = "UDA1380 Duplex",
  94                 .cpu_dai_name   = "s3c24xx-iis",
  95                 .codec_dai_name = "uda1380-hifi",
  96                 .init           = rx1950_uda1380_init,
  97                 .platform_name  = "samsung-audio",
  98                 .codec_name     = "uda1380-codec.0-001a",
  99                 .ops            = &rx1950_ops,
 100         },
 101 };
 102
 103 static struct snd_soc_card rx1950_asoc = {
 104         .name = "rx1950",
 105         .dai_link = rx1950_uda1380_dai,
 106         .num_links = ARRAY_SIZE(rx1950_uda1380_dai),
 107 };
 108
 109 /* rx1950 machine dapm widgets */
 110 static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
 111         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 112         SND_SOC_DAPM_MIC("Mic Jack", NULL),
 113         SND_SOC_DAPM_SPK("Speaker", rx1950_spk_power),
 114 };
 115
 116 /* rx1950 machine audio_map */
 117 static const struct snd_soc_dapm_route audio_map[] = {
 118         /* headphone connected to VOUTLHP, VOUTRHP */
 119         {"Headphone Jack", NULL, "VOUTLHP"},
 120         {"Headphone Jack", NULL, "VOUTRHP"},
 121
 122         /* ext speaker connected to VOUTL, VOUTR  */
 123         {"Speaker", NULL, "VOUTL"},
 124         {"Speaker", NULL, "VOUTR"},
 125
 126         /* mic is connected to VINM */
 127         {"VINM", NULL, "Mic Jack"},
 128 };
 129
 130 static struct platform_device *s3c24xx_snd_device;
 131
 132 static int rx1950_startup(struct snd_pcm_substream *substream)
 133 {
 134         struct snd_pcm_runtime *runtime = substream->runtime;
 135
 136         runtime->hw.rate_min = hw_rates.list[0];
 137         runtime->hw.rate_max = hw_rates.list[hw_rates.count - 1];
 138         runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
 139
 140         return snd_pcm_hw_constraint_list(runtime, 0,
 141                                         SNDRV_PCM_HW_PARAM_RATE,
 142                                         &hw_rates);
 143 }
 144
 145 static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
 146                                 struct snd_kcontrol *kcontrol, int event)
 147 {
 148         if (SND_SOC_DAPM_EVENT_ON(event))
 149                 gpio_set_value(S3C2410_GPA(1), 1);
 150         else
 151                 gpio_set_value(S3C2410_GPA(1), 0);
 152
 153         return 0;
 154 }
 155
 156 static int rx1950_hw_params(struct snd_pcm_substream *substream,
 157                                 struct snd_pcm_hw_params *params)
 158 {
 159         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 160         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 161         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 162         int div;
 163         int ret;
 164         unsigned int rate = params_rate(params);
 165         int clk_source, fs_mode;
 166
 167         switch (rate) {
 168         case 16000:
 169         case 48000:
 170                 clk_source = S3C24XX_CLKSRC_PCLK;
 171                 fs_mode = S3C2410_IISMOD_256FS;
 172                 div = s3c24xx_i2s_get_clockrate() / (256 * rate);
 173                 if (s3c24xx_i2s_get_clockrate() % (256 * rate) > (128 * rate))
 174                         div++;
 175                 break;
 176         case 44100:
 177         case 88200:
 178                 clk_source = S3C24XX_CLKSRC_MPLL;
 179                 fs_mode = S3C2410_IISMOD_384FS;
 180                 div = 1;
 181                 break;
 182         default:
 183                 printk(KERN_ERR "%s: rate %d is not supported\n",
 184                         __func__, rate);
 185                 return -EINVAL;
 186         }
 187
 188         /* set codec DAI configuration */
 189         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
 190                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 191         if (ret < 0)
 192                 return ret;
 193
 194         /* set cpu DAI configuration */
 195         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
 196                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 197         if (ret < 0)
 198                 return ret;
 199
 200         /* select clock source */
 201         ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source, rate,
 202                         SND_SOC_CLOCK_OUT);
 203         if (ret < 0)
 204                 return ret;
 205
 206         /* set MCLK division for sample rate */
 207         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
 208                 fs_mode);
 209         if (ret < 0)
 210                 return ret;
 211
 212         /* set BCLK division for sample rate */
 213         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK,
 214                 S3C2410_IISMOD_32FS);
 215         if (ret < 0)
 216                 return ret;
 217
 218         /* set prescaler division for sample rate */
 219         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
 220                 S3C24XX_PRESCALE(div, div));
 221         if (ret < 0)
 222                 return ret;
 223
 224         return 0;
 225 }
 226
 227 static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd)
 228 {
 229         struct snd_soc_codec *codec = rtd->codec;
 230         struct snd_soc_dapm_context *dapm = &codec->dapm;
 231         int err;
 232
 233         /* Add rx1950 specific widgets */
 234         err = snd_soc_dapm_new_controls(dapm, uda1380_dapm_widgets,
 235                                   ARRAY_SIZE(uda1380_dapm_widgets));
 236
 237         if (err)
 238                 return err;
 239
 240         /* Set up rx1950 specific audio path audio_mapnects */
 241         err = snd_soc_dapm_add_routes(dapm, audio_map,
 242                                       ARRAY_SIZE(audio_map));
 243
 244         if (err)
 245                 return err;
 246
 247         snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
 248         snd_soc_dapm_enable_pin(dapm, "Speaker");
 249
 250         snd_soc_dapm_sync(dapm);
 251
 252         snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
 253                 &hp_jack);
 254
 255         snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins),
 256                 hp_jack_pins);
 257
 258         snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
 259                 hp_jack_gpios);
 260
 261         return 0;
 262 }
 263
 264 static int __init rx1950_init(void)
 265 {
 266         int ret;
 267
 268         if (!machine_is_rx1950())
 269                 return -ENODEV;
 270
 271         /* configure some gpios */
 272         ret = gpio_request(S3C2410_GPA(1), "speaker-power");
 273         if (ret)
 274                 goto err_gpio;
 275
 276         ret = gpio_direction_output(S3C2410_GPA(1), 0);
 277         if (ret)
 278                 goto err_gpio_conf;
 279
 280         s3c24xx_snd_device = platform_device_alloc("soc-audio", -1);
 281         if (!s3c24xx_snd_device) {
 282                 ret = -ENOMEM;
 283                 goto err_plat_alloc;
 284         }
 285
 286         platform_set_drvdata(s3c24xx_snd_device, &rx1950_asoc);
 287         ret = platform_device_add(s3c24xx_snd_device);
 288
 289         if (ret) {
 290                 platform_device_put(s3c24xx_snd_device);
 291                 goto err_plat_add;
 292         }
 293
 294         return 0;
 295
 296 err_plat_add:
 297 err_plat_alloc:
 298 err_gpio_conf:
 299         gpio_free(S3C2410_GPA(1));
 300
 301 err_gpio:
 302         return ret;
 303 }
 304
 305 static void __exit rx1950_exit(void)
 306 {
 307         platform_device_unregister(s3c24xx_snd_device);
 308         snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
 309                 hp_jack_gpios);
 310         gpio_free(S3C2410_GPA(1));
 311 }
 312
 313 module_init(rx1950_init);
 314 module_exit(rx1950_exit);
 315
 316 /* Module information */
 317 MODULE_AUTHOR("Vasily Khoruzhick");
 318 MODULE_DESCRIPTION("ALSA SoC RX1950");
 319 MODULE_LICENSE("GPL");