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         return snd_pcm_hw_constraint_list(runtime, 0,
 135                                         SNDRV_PCM_HW_PARAM_RATE,
 136                                         &hw_rates);
 137 }
 138
 139 static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
 140                                 struct snd_kcontrol *kcontrol, int event)
 141 {
 142         if (SND_SOC_DAPM_EVENT_ON(event))
 143                 gpio_set_value(S3C2410_GPA(1), 1);
 144         else
 145                 gpio_set_value(S3C2410_GPA(1), 0);
 146
 147         return 0;
 148 }
 149
 150 static int rx1950_hw_params(struct snd_pcm_substream *substream,
 151                                 struct snd_pcm_hw_params *params)
 152 {
 153         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 154         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 155         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 156         int div;
 157         int ret;
 158         unsigned int rate = params_rate(params);
 159         int clk_source, fs_mode;
 160
 161         switch (rate) {
 162         case 16000:
 163         case 48000:
 164                 clk_source = S3C24XX_CLKSRC_PCLK;
 165                 fs_mode = S3C2410_IISMOD_256FS;
 166                 div = s3c24xx_i2s_get_clockrate() / (256 * rate);
 167                 if (s3c24xx_i2s_get_clockrate() % (256 * rate) > (128 * rate))
 168                         div++;
 169                 break;
 170         case 44100:
 171         case 88200:
 172                 clk_source = S3C24XX_CLKSRC_MPLL;
 173                 fs_mode = S3C2410_IISMOD_384FS;
 174                 div = 1;
 175                 break;
 176         default:
 177                 printk(KERN_ERR "%s: rate %d is not supported\n",
 178                         __func__, rate);
 179                 return -EINVAL;
 180         }
 181
 182         /* set codec DAI configuration */
 183         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
 184                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 185         if (ret < 0)
 186                 return ret;
 187
 188         /* set cpu DAI configuration */
 189         ret = snd_soc_dai_set_fmt(cpu_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         /* select clock source */
 195         ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source, rate,
 196                         SND_SOC_CLOCK_OUT);
 197         if (ret < 0)
 198                 return ret;
 199
 200         /* set MCLK division for sample rate */
 201         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
 202                 fs_mode);
 203         if (ret < 0)
 204                 return ret;
 205
 206         /* set BCLK division for sample rate */
 207         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK,
 208                 S3C2410_IISMOD_32FS);
 209         if (ret < 0)
 210                 return ret;
 211
 212         /* set prescaler division for sample rate */
 213         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
 214                 S3C24XX_PRESCALE(div, div));
 215         if (ret < 0)
 216                 return ret;
 217
 218         return 0;
 219 }
 220
 221 static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd)
 222 {
 223         struct snd_soc_codec *codec = rtd->codec;
 224         struct snd_soc_dapm_context *dapm = &codec->dapm;
 225
 226         snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
 227         snd_soc_dapm_enable_pin(dapm, "Speaker");
 228         snd_soc_dapm_enable_pin(dapm, "Mic Jack");
 229
 230         snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
 231                 &hp_jack);
 232
 233         snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins),
 234                 hp_jack_pins);
 235
 236         snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
 237                 hp_jack_gpios);
 238
 239         return 0;
 240 }
 241
 242 static int __init rx1950_init(void)
 243 {
 244         int ret;
 245
 246         if (!machine_is_rx1950())
 247                 return -ENODEV;
 248
 249         /* configure some gpios */
 250         ret = gpio_request(S3C2410_GPA(1), "speaker-power");
 251         if (ret)
 252                 goto err_gpio;
 253
 254         ret = gpio_direction_output(S3C2410_GPA(1), 0);
 255         if (ret)
 256                 goto err_gpio_conf;
 257
 258         s3c24xx_snd_device = platform_device_alloc("soc-audio", -1);
 259         if (!s3c24xx_snd_device) {
 260                 ret = -ENOMEM;
 261                 goto err_plat_alloc;
 262         }
 263
 264         platform_set_drvdata(s3c24xx_snd_device, &rx1950_asoc);
 265         ret = platform_device_add(s3c24xx_snd_device);
 266
 267         if (ret) {
 268                 platform_device_put(s3c24xx_snd_device);
 269                 goto err_plat_add;
 270         }
 271
 272         return 0;
 273
 274 err_plat_add:
 275 err_plat_alloc:
 276 err_gpio_conf:
 277         gpio_free(S3C2410_GPA(1));
 278
 279 err_gpio:
 280         return ret;
 281 }
 282
 283 static void __exit rx1950_exit(void)
 284 {
 285         platform_device_unregister(s3c24xx_snd_device);
 286         snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
 287                 hp_jack_gpios);
 288         gpio_free(S3C2410_GPA(1));
 289 }
 290
 291 module_init(rx1950_init);
 292 module_exit(rx1950_exit);
 293
 294 /* Module information */
 295 MODULE_AUTHOR("Vasily Khoruzhick");
 296 MODULE_DESCRIPTION("ALSA SoC RX1950");
 297 MODULE_LICENSE("GPL");