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_uda1380_card_remove(struct snd_soc_card *card);
  35 static int rx1950_startup(struct snd_pcm_substream *substream);
  36 static int rx1950_hw_params(struct snd_pcm_substream *substream,
  37                                 struct snd_pcm_hw_params *params);
  38 static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
  39                                 struct snd_kcontrol *kcontrol, int event);
  40
  41 static const unsigned int rates[] = {
  42         16000,
  43         44100,
  44         48000,
  45 };
  46
  47 static const struct snd_pcm_hw_constraint_list hw_rates = {
  48         .count = ARRAY_SIZE(rates),
  49         .list = rates,
  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                 .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
  92                                   SND_SOC_DAIFMT_CBS_CFS,
  93                 .ops            = &rx1950_ops,
  94         },
  95 };
  96
  97 /* rx1950 machine dapm widgets */
  98 static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
  99         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 100         SND_SOC_DAPM_MIC("Mic Jack", NULL),
 101         SND_SOC_DAPM_SPK("Speaker", rx1950_spk_power),
 102 };
 103
 104 /* rx1950 machine audio_map */
 105 static const struct snd_soc_dapm_route audio_map[] = {
 106         /* headphone connected to VOUTLHP, VOUTRHP */
 107         {"Headphone Jack", NULL, "VOUTLHP"},
 108         {"Headphone Jack", NULL, "VOUTRHP"},
 109
 110         /* ext speaker connected to VOUTL, VOUTR  */
 111         {"Speaker", NULL, "VOUTL"},
 112         {"Speaker", NULL, "VOUTR"},
 113
 114         /* mic is connected to VINM */
 115         {"VINM", NULL, "Mic Jack"},
 116 };
 117
 118 static struct snd_soc_card rx1950_asoc = {
 119         .name = "rx1950",
 120         .owner = THIS_MODULE,
 121         .remove = rx1950_uda1380_card_remove,
 122         .dai_link = rx1950_uda1380_dai,
 123         .num_links = ARRAY_SIZE(rx1950_uda1380_dai),
 124
 125         .dapm_widgets = uda1380_dapm_widgets,
 126         .num_dapm_widgets = ARRAY_SIZE(uda1380_dapm_widgets),
 127         .dapm_routes = audio_map,
 128         .num_dapm_routes = ARRAY_SIZE(audio_map),
 129 };
 130
 131 static struct platform_device *s3c24xx_snd_device;
 132
 133 static int rx1950_startup(struct snd_pcm_substream *substream)
 134 {
 135         struct snd_pcm_runtime *runtime = substream->runtime;
 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         int div;
 159         int ret;
 160         unsigned int rate = params_rate(params);
 161         int clk_source, fs_mode;
 162
 163         switch (rate) {
 164         case 16000:
 165         case 48000:
 166                 clk_source = S3C24XX_CLKSRC_PCLK;
 167                 fs_mode = S3C2410_IISMOD_256FS;
 168                 div = s3c24xx_i2s_get_clockrate() / (256 * rate);
 169                 if (s3c24xx_i2s_get_clockrate() % (256 * rate) > (128 * rate))
 170                         div++;
 171                 break;
 172         case 44100:
 173         case 88200:
 174                 clk_source = S3C24XX_CLKSRC_MPLL;
 175                 fs_mode = S3C2410_IISMOD_384FS;
 176                 div = 1;
 177                 break;
 178         default:
 179                 printk(KERN_ERR "%s: rate %d is not supported\n",
 180                         __func__, rate);
 181                 return -EINVAL;
 182         }
 183
 184         /* select clock source */
 185         ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source, rate,
 186                         SND_SOC_CLOCK_OUT);
 187         if (ret < 0)
 188                 return ret;
 189
 190         /* set MCLK division for sample rate */
 191         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
 192                 fs_mode);
 193         if (ret < 0)
 194                 return ret;
 195
 196         /* set BCLK division for sample rate */
 197         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK,
 198                 S3C2410_IISMOD_32FS);
 199         if (ret < 0)
 200                 return ret;
 201
 202         /* set prescaler division for sample rate */
 203         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
 204                 S3C24XX_PRESCALE(div, div));
 205         if (ret < 0)
 206                 return ret;
 207
 208         return 0;
 209 }
 210
 211 static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd)
 212 {
 213         snd_soc_card_jack_new(rtd->card, "Headphone Jack", SND_JACK_HEADPHONE,
 214                 &hp_jack, hp_jack_pins, ARRAY_SIZE(hp_jack_pins));
 215
 216         snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
 217                 hp_jack_gpios);
 218
 219         return 0;
 220 }
 221
 222 static int rx1950_uda1380_card_remove(struct snd_soc_card *card)
 223 {
 224         snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
 225                 hp_jack_gpios);
 226
 227         return 0;
 228 }
 229
 230 static int __init rx1950_init(void)
 231 {
 232         int ret;
 233
 234         if (!machine_is_rx1950())
 235                 return -ENODEV;
 236
 237         /* configure some gpios */
 238         ret = gpio_request(S3C2410_GPA(1), "speaker-power");
 239         if (ret)
 240                 goto err_gpio;
 241
 242         ret = gpio_direction_output(S3C2410_GPA(1), 0);
 243         if (ret)
 244                 goto err_gpio_conf;
 245
 246         s3c24xx_snd_device = platform_device_alloc("soc-audio", -1);
 247         if (!s3c24xx_snd_device) {
 248                 ret = -ENOMEM;
 249                 goto err_plat_alloc;
 250         }
 251
 252         platform_set_drvdata(s3c24xx_snd_device, &rx1950_asoc);
 253         ret = platform_device_add(s3c24xx_snd_device);
 254
 255         if (ret) {
 256                 platform_device_put(s3c24xx_snd_device);
 257                 goto err_plat_add;
 258         }
 259
 260         return 0;
 261
 262 err_plat_add:
 263 err_plat_alloc:
 264 err_gpio_conf:
 265         gpio_free(S3C2410_GPA(1));
 266
 267 err_gpio:
 268         return ret;
 269 }
 270
 271 static void __exit rx1950_exit(void)
 272 {
 273         platform_device_unregister(s3c24xx_snd_device);
 274         gpio_free(S3C2410_GPA(1));
 275 }
 276
 277 module_init(rx1950_init);
 278 module_exit(rx1950_exit);
 279
 280 /* Module information */
 281 MODULE_AUTHOR("Vasily Khoruzhick");
 282 MODULE_DESCRIPTION("ALSA SoC RX1950");
 283 MODULE_LICENSE("GPL");