sound/soc/s3c24xx/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/module.h>
  21 #include <linux/moduleparam.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/i2c.h>
  24 #include <linux/gpio.h>
  25 #include <linux/clk.h>
  26
  27 #include <sound/soc.h>
  28 #include <sound/soc-dapm.h>
  29 #include <sound/uda1380.h>
  30 #include <sound/jack.h>
  31
  32 #include <plat/regs-iis.h>
  33
  34 #include <mach/regs-clock.h>
  35
  36 #include <asm/mach-types.h>
  37
  38 #include "s3c-dma.h"
  39 #include "s3c24xx-i2s.h"
  40 #include "../codecs/uda1380.h"
  41
  42 static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd);
  43 static int rx1950_startup(struct snd_pcm_substream *substream);
  44 static int rx1950_hw_params(struct snd_pcm_substream *substream,
  45                                 struct snd_pcm_hw_params *params);
  46 static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
  47                                 struct snd_kcontrol *kcontrol, int event);
  48
  49 static unsigned int rates[] = {
  50         16000,
  51         44100,
  52         48000,
  53         88200,
  54 };
  55
  56 static struct snd_pcm_hw_constraint_list hw_rates = {
  57         .count = ARRAY_SIZE(rates),
  58         .list = rates,
  59         .mask = 0,
  60 };
  61
  62 static struct snd_soc_jack hp_jack;
  63
  64 static struct snd_soc_jack_pin hp_jack_pins[] = {
  65         {
  66                 .pin    = "Headphone Jack",
  67                 .mask   = SND_JACK_HEADPHONE,
  68         },
  69         {
  70                 .pin    = "Speaker",
  71                 .mask   = SND_JACK_HEADPHONE,
  72                 .invert = 1,
  73         },
  74 };
  75
  76 static struct snd_soc_jack_gpio hp_jack_gpios[] = {
  77         [0] = {
  78                 .gpio                   = S3C2410_GPG(12),
  79                 .name                   = "hp-gpio",
  80                 .report                 = SND_JACK_HEADPHONE,
  81                 .invert                 = 1,
  82                 .debounce_time          = 200,
  83         },
  84 };
  85
  86 static struct snd_soc_ops rx1950_ops = {
  87         .startup        = rx1950_startup,
  88         .hw_params      = rx1950_hw_params,
  89 };
  90
  91 /* s3c24xx digital audio interface glue - connects codec <--> CPU */
  92 static struct snd_soc_dai_link rx1950_uda1380_dai[] = {
  93         {
  94                 .name           = "uda1380",
  95                 .stream_name    = "UDA1380 Duplex",
  96                 .cpu_dai_name   = "s3c24xx-iis",
  97                 .codec_dai_name = "uda1380-hifi",
  98                 .init           = rx1950_uda1380_init,
  99                 .platform_name  = "s3c24xx-pcm-audio",
 100                 .codec_name     = "uda1380-codec.0-001a",
 101                 .ops            = &rx1950_ops,
 102         },
 103 };
 104
 105 static struct snd_soc_card rx1950_asoc = {
 106         .name = "rx1950",
 107         .dai_link = rx1950_uda1380_dai,
 108         .num_links = ARRAY_SIZE(rx1950_uda1380_dai),
 109 };
 110
 111 /* rx1950 machine dapm widgets */
 112 static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
 113         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 114         SND_SOC_DAPM_MIC("Mic Jack", NULL),
 115         SND_SOC_DAPM_SPK("Speaker", rx1950_spk_power),
 116 };
 117
 118 /* rx1950 machine audio_map */
 119 static const struct snd_soc_dapm_route audio_map[] = {
 120         /* headphone connected to VOUTLHP, VOUTRHP */
 121         {"Headphone Jack", NULL, "VOUTLHP"},
 122         {"Headphone Jack", NULL, "VOUTRHP"},
 123
 124         /* ext speaker connected to VOUTL, VOUTR  */
 125         {"Speaker", NULL, "VOUTL"},
 126         {"Speaker", NULL, "VOUTR"},
 127
 128         /* mic is connected to VINM */
 129         {"VINM", NULL, "Mic Jack"},
 130 };
 131
 132 static struct platform_device *s3c24xx_snd_device;
 133 static struct clk *xtal;
 134
 135 static int rx1950_startup(struct snd_pcm_substream *substream)
 136 {
 137         struct snd_pcm_runtime *runtime = substream->runtime;
 138
 139         runtime->hw.rate_min = hw_rates.list[0];
 140         runtime->hw.rate_max = hw_rates.list[hw_rates.count - 1];
 141         runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
 142
 143         return snd_pcm_hw_constraint_list(runtime, 0,
 144                                         SNDRV_PCM_HW_PARAM_RATE,
 145                                         &hw_rates);
 146 }
 147
 148 static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
 149                                 struct snd_kcontrol *kcontrol, int event)
 150 {
 151         if (SND_SOC_DAPM_EVENT_ON(event))
 152                 gpio_set_value(S3C2410_GPA(1), 1);
 153         else
 154                 gpio_set_value(S3C2410_GPA(1), 0);
 155
 156         return 0;
 157 }
 158
 159 static int rx1950_hw_params(struct snd_pcm_substream *substream,
 160                                 struct snd_pcm_hw_params *params)
 161 {
 162         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 163         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 164         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 165         int div;
 166         int ret;
 167         unsigned int rate = params_rate(params);
 168         int clk_source, fs_mode;
 169
 170         switch (rate) {
 171         case 16000:
 172         case 48000:
 173                 clk_source = S3C24XX_CLKSRC_PCLK;
 174                 fs_mode = S3C2410_IISMOD_256FS;
 175                 div = s3c24xx_i2s_get_clockrate() / (256 * rate);
 176                 if (s3c24xx_i2s_get_clockrate() % (256 * rate) > (128 * rate))
 177                         div++;
 178                 break;
 179         case 44100:
 180         case 88200:
 181                 clk_source = S3C24XX_CLKSRC_MPLL;
 182                 fs_mode = S3C2410_IISMOD_256FS;
 183                 div = clk_get_rate(xtal) / (256 * rate);
 184                 if (clk_get_rate(xtal) % (256 * rate) > (128 * rate))
 185                         div++;
 186                 break;
 187         default:
 188                 printk(KERN_ERR "%s: rate %d is not supported\n",
 189                         __func__, rate);
 190                 return -EINVAL;
 191         }
 192
 193         /* set codec DAI configuration */
 194         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
 195                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 196         if (ret < 0)
 197                 return ret;
 198
 199         /* set cpu DAI configuration */
 200         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
 201                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 202         if (ret < 0)
 203                 return ret;
 204
 205         /* select clock source */
 206         ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source, rate,
 207                         SND_SOC_CLOCK_OUT);
 208         if (ret < 0)
 209                 return ret;
 210
 211         /* set MCLK division for sample rate */
 212         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
 213                 S3C2410_IISMOD_384FS);
 214         if (ret < 0)
 215                 return ret;
 216
 217         /* set BCLK division for sample rate */
 218         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK,
 219                 S3C2410_IISMOD_32FS);
 220         if (ret < 0)
 221                 return ret;
 222
 223         /* set prescaler division for sample rate */
 224         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
 225                 S3C24XX_PRESCALE(div, div));
 226         if (ret < 0)
 227                 return ret;
 228
 229         return 0;
 230 }
 231
 232 static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd)
 233 {
 234         struct snd_soc_codec *codec = rtd->codec;
 235         int err;
 236
 237         /* Add rx1950 specific widgets */
 238         err = snd_soc_dapm_new_controls(codec, uda1380_dapm_widgets,
 239                                   ARRAY_SIZE(uda1380_dapm_widgets));
 240
 241         if (err)
 242                 return err;
 243
 244         /* Set up rx1950 specific audio path audio_mapnects */
 245         err = snd_soc_dapm_add_routes(codec, audio_map,
 246                                       ARRAY_SIZE(audio_map));
 247
 248         if (err)
 249                 return err;
 250
 251         snd_soc_dapm_enable_pin(codec, "Headphone Jack");
 252         snd_soc_dapm_enable_pin(codec, "Speaker");
 253
 254         snd_soc_dapm_sync(codec);
 255
 256         snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
 257                 &hp_jack);
 258
 259         snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins),
 260                 hp_jack_pins);
 261
 262         snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
 263                 hp_jack_gpios);
 264
 265         return 0;
 266 }
 267
 268 static int __init rx1950_init(void)
 269 {
 270         int ret;
 271
 272         if (!machine_is_rx1950())
 273                 return -ENODEV;
 274
 275         /* configure some gpios */
 276         ret = gpio_request(S3C2410_GPA(1), "speaker-power");
 277         if (ret)
 278                 goto err_gpio;
 279
 280         ret = gpio_direction_output(S3C2410_GPA(1), 0);
 281         if (ret)
 282                 goto err_gpio_conf;
 283
 284         s3c24xx_snd_device = platform_device_alloc("soc-audio", -1);
 285         if (!s3c24xx_snd_device) {
 286                 ret = -ENOMEM;
 287                 goto err_plat_alloc;
 288         }
 289
 290         platform_set_drvdata(s3c24xx_snd_device, &rx1950_asoc);
 291         ret = platform_device_add(s3c24xx_snd_device);
 292
 293         if (ret) {
 294                 platform_device_put(s3c24xx_snd_device);
 295                 goto err_plat_add;
 296         }
 297
 298         xtal = clk_get(&s3c24xx_snd_device->dev, "xtal");
 299
 300         if (IS_ERR(xtal)) {
 301                 ret = PTR_ERR(xtal);
 302                 platform_device_unregister(s3c24xx_snd_device);
 303                 goto err_clk;
 304         }
 305
 306         return 0;
 307
 308 err_clk:
 309 err_plat_add:
 310 err_plat_alloc:
 311 err_gpio_conf:
 312         gpio_free(S3C2410_GPA(1));
 313
 314 err_gpio:
 315         return ret;
 316 }
 317
 318 static void __exit rx1950_exit(void)
 319 {
 320         platform_device_unregister(s3c24xx_snd_device);
 321         snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
 322                 hp_jack_gpios);
 323         clk_put(xtal);
 324         gpio_free(S3C2410_GPA(1));
 325 }
 326
 327 module_init(rx1950_init);
 328 module_exit(rx1950_exit);
 329
 330 /* Module information */
 331 MODULE_AUTHOR("Vasily Khoruzhick");
 332 MODULE_DESCRIPTION("ALSA SoC RX1950");
 333 MODULE_LICENSE("GPL");