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