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