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 /* rx1950 machine dapm widgets */
  94 static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
  95         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  96         SND_SOC_DAPM_MIC("Mic Jack", NULL),
  97         SND_SOC_DAPM_SPK("Speaker", rx1950_spk_power),
  98 };
  99
 100 /* rx1950 machine audio_map */
 101 static const struct snd_soc_dapm_route audio_map[] = {
 102         /* headphone connected to VOUTLHP, VOUTRHP */
 103         {"Headphone Jack", NULL, "VOUTLHP"},
 104         {"Headphone Jack", NULL, "VOUTRHP"},
 105
 106         /* ext speaker connected to VOUTL, VOUTR  */
 107         {"Speaker", NULL, "VOUTL"},
 108         {"Speaker", NULL, "VOUTR"},
 109
 110         /* mic is connected to VINM */
 111         {"VINM", NULL, "Mic Jack"},
 112 };
 113
 114 static struct snd_soc_card rx1950_asoc = {
 115         .name = "rx1950",
 116         .dai_link = rx1950_uda1380_dai,
 117         .num_links = ARRAY_SIZE(rx1950_uda1380_dai),
 118
 119         .dapm_widgets = uda1380_dapm_widgets,
 120         .num_dapm_widgets = ARRAY_SIZE(uda1380_dapm_widgets),
 121         .dapm_routes = audio_map,
 122         .num_dapm_routes = ARRAY_SIZE(audio_map),
 123 };
 124
 125 static struct platform_device *s3c24xx_snd_device;
 126
 127 static int rx1950_startup(struct snd_pcm_substream *substream)
 128 {
 129         struct snd_pcm_runtime *runtime = substream->runtime;
 130
 131         runtime->hw.rate_min = hw_rates.list[0];
 132         runtime->hw.rate_max = hw_rates.list[hw_rates.count - 1];
 133         runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
 134
 135         return snd_pcm_hw_constraint_list(runtime, 0,
 136                                         SNDRV_PCM_HW_PARAM_RATE,
 137                                         &hw_rates);
 138 }
 139
 140 static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
 141                                 struct snd_kcontrol *kcontrol, int event)
 142 {
 143         if (SND_SOC_DAPM_EVENT_ON(event))
 144                 gpio_set_value(S3C2410_GPA(1), 1);
 145         else
 146                 gpio_set_value(S3C2410_GPA(1), 0);
 147
 148         return 0;
 149 }
 150
 151 static int rx1950_hw_params(struct snd_pcm_substream *substream,
 152                                 struct snd_pcm_hw_params *params)
 153 {
 154         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 155         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 156         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 157         int div;
 158         int ret;
 159         unsigned int rate = params_rate(params);
 160         int clk_source, fs_mode;
 161
 162         switch (rate) {
 163         case 16000:
 164         case 48000:
 165                 clk_source = S3C24XX_CLKSRC_PCLK;
 166                 fs_mode = S3C2410_IISMOD_256FS;
 167                 div = s3c24xx_i2s_get_clockrate() / (256 * rate);
 168                 if (s3c24xx_i2s_get_clockrate() % (256 * rate) > (128 * rate))
 169                         div++;
 170                 break;
 171         case 44100:
 172         case 88200:
 173                 clk_source = S3C24XX_CLKSRC_MPLL;
 174                 fs_mode = S3C2410_IISMOD_384FS;
 175                 div = 1;
 176                 break;
 177         default:
 178                 printk(KERN_ERR "%s: rate %d is not supported\n",
 179                         __func__, rate);
 180                 return -EINVAL;
 181         }
 182
 183         /* set codec DAI configuration */
 184         ret = snd_soc_dai_set_fmt(codec_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         /* set cpu DAI configuration */
 190         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
 191                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 192         if (ret < 0)
 193                 return ret;
 194
 195         /* select clock source */
 196         ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source, rate,
 197                         SND_SOC_CLOCK_OUT);
 198         if (ret < 0)
 199                 return ret;
 200
 201         /* set MCLK division for sample rate */
 202         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
 203                 fs_mode);
 204         if (ret < 0)
 205                 return ret;
 206
 207         /* set BCLK division for sample rate */
 208         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK,
 209                 S3C2410_IISMOD_32FS);
 210         if (ret < 0)
 211                 return ret;
 212
 213         /* set prescaler division for sample rate */
 214         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
 215                 S3C24XX_PRESCALE(div, div));
 216         if (ret < 0)
 217                 return ret;
 218
 219         return 0;
 220 }
 221
 222 static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd)
 223 {
 224         struct snd_soc_codec *codec = rtd->codec;
 225         struct snd_soc_dapm_context *dapm = &codec->dapm;
 226         int err;
 227
 228         snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
 229         snd_soc_dapm_enable_pin(dapm, "Speaker");
 230         snd_soc_dapm_enable_pin(dapm, "Mic Jack");
 231
 232         snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
 233                 &hp_jack);
 234
 235         snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins),
 236                 hp_jack_pins);
 237
 238         snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
 239                 hp_jack_gpios);
 240
 241         return 0;
 242 }
 243
 244 static int __init rx1950_init(void)
 245 {
 246         int ret;
 247
 248         if (!machine_is_rx1950())
 249                 return -ENODEV;
 250
 251         /* configure some gpios */
 252         ret = gpio_request(S3C2410_GPA(1), "speaker-power");
 253         if (ret)
 254                 goto err_gpio;
 255
 256         ret = gpio_direction_output(S3C2410_GPA(1), 0);
 257         if (ret)
 258                 goto err_gpio_conf;
 259
 260         s3c24xx_snd_device = platform_device_alloc("soc-audio", -1);
 261         if (!s3c24xx_snd_device) {
 262                 ret = -ENOMEM;
 263                 goto err_plat_alloc;
 264         }
 265
 266         platform_set_drvdata(s3c24xx_snd_device, &rx1950_asoc);
 267         ret = platform_device_add(s3c24xx_snd_device);
 268
 269         if (ret) {
 270                 platform_device_put(s3c24xx_snd_device);
 271                 goto err_plat_add;
 272         }
 273
 274         return 0;
 275
 276 err_plat_add:
 277 err_plat_alloc:
 278 err_gpio_conf:
 279         gpio_free(S3C2410_GPA(1));
 280
 281 err_gpio:
 282         return ret;
 283 }
 284
 285 static void __exit rx1950_exit(void)
 286 {
 287         platform_device_unregister(s3c24xx_snd_device);
 288         snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
 289                 hp_jack_gpios);
 290         gpio_free(S3C2410_GPA(1));
 291 }
 292
 293 module_init(rx1950_init);
 294 module_exit(rx1950_exit);
 295
 296 /* Module information */
 297 MODULE_AUTHOR("Vasily Khoruzhick");
 298 MODULE_DESCRIPTION("ALSA SoC RX1950");
 299 MODULE_LICENSE("GPL");