LXR linux/sound/soc/pxa/spitz.c

   1/*
   2 * spitz.c  --  SoC audio for Sharp SL-Cxx00 models Spitz, Borzoi and Akita
   3 *
   4 * Copyright 2005 Wolfson Microelectronics PLC.
   5 * Copyright 2005 Openedhand Ltd.
   6 *
   7 * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
   8 *          Richard Purdie <richard@openedhand.com>
   9 *
  10 *  This program is free software; you can redistribute  it and/or modify it
  11 *  under  the terms of  the GNU General  Public License as published by the
  12 *  Free Software Foundation;  either version 2 of the  License, or (at your
  13 *  option) any later version.
  14 *
  15 */
  16
  17#include <linux/module.h>
  18#include <linux/moduleparam.h>
  19#include <linux/timer.h>
  20#include <linux/interrupt.h>
  21#include <linux/platform_device.h>
  22#include <linux/gpio.h>
  23#include <sound/core.h>
  24#include <sound/pcm.h>
  25#include <sound/soc.h>
  26#include <sound/soc-dapm.h>
  27
  28#include <asm/mach-types.h>
  29#include <mach/spitz.h>
  30#include "../codecs/wm8750.h"
  31#include "pxa2xx-pcm.h"
  32#include "pxa2xx-i2s.h"
  33
  34#define SPITZ_HP        0
  35#define SPITZ_MIC       1
  36#define SPITZ_LINE      2
  37#define SPITZ_HEADSET   3
  38#define SPITZ_HP_OFF    4
  39#define SPITZ_SPK_ON    0
  40#define SPITZ_SPK_OFF   1
  41
  42 /* audio clock in Hz - rounded from 12.235MHz */
  43#define SPITZ_AUDIO_CLOCK 12288000
  44
  45static int spitz_jack_func;
  46static int spitz_spk_func;
  47
  48static void spitz_ext_control(struct snd_soc_codec *codec)
  49{
  50        if (spitz_spk_func == SPITZ_SPK_ON)
  51                snd_soc_dapm_enable_pin(codec, "Ext Spk");
  52        else
  53                snd_soc_dapm_disable_pin(codec, "Ext Spk");
  54
  55        /* set up jack connection */
  56        switch (spitz_jack_func) {
  57        case SPITZ_HP:
  58                /* enable and unmute hp jack, disable mic bias */
  59                snd_soc_dapm_disable_pin(codec, "Headset Jack");
  60                snd_soc_dapm_disable_pin(codec, "Mic Jack");
  61                snd_soc_dapm_disable_pin(codec, "Line Jack");
  62                snd_soc_dapm_enable_pin(codec, "Headphone Jack");
  63                gpio_set_value(SPITZ_GPIO_MUTE_L, 1);
  64                gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
  65                break;
  66        case SPITZ_MIC:
  67                /* enable mic jack and bias, mute hp */
  68                snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  69                snd_soc_dapm_disable_pin(codec, "Headset Jack");
  70                snd_soc_dapm_disable_pin(codec, "Line Jack");
  71                snd_soc_dapm_enable_pin(codec, "Mic Jack");
  72                gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  73                gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
  74                break;
  75        case SPITZ_LINE:
  76                /* enable line jack, disable mic bias and mute hp */
  77                snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  78                snd_soc_dapm_disable_pin(codec, "Headset Jack");
  79                snd_soc_dapm_disable_pin(codec, "Mic Jack");
  80                snd_soc_dapm_enable_pin(codec, "Line Jack");
  81                gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  82                gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
  83                break;
  84        case SPITZ_HEADSET:
  85                /* enable and unmute headset jack enable mic bias, mute L hp */
  86                snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  87                snd_soc_dapm_enable_pin(codec, "Mic Jack");
  88                snd_soc_dapm_disable_pin(codec, "Line Jack");
  89                snd_soc_dapm_enable_pin(codec, "Headset Jack");
  90                gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  91                gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
  92                break;
  93        case SPITZ_HP_OFF:
  94
  95                /* jack removed, everything off */
  96                snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  97                snd_soc_dapm_disable_pin(codec, "Headset Jack");
  98                snd_soc_dapm_disable_pin(codec, "Mic Jack");
  99                snd_soc_dapm_disable_pin(codec, "Line Jack");
 100                gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
 101                gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
 102                break;
 103        }
 104        snd_soc_dapm_sync(codec);
 105}
 106
 107static int spitz_startup(struct snd_pcm_substream *substream)
 108{
 109        struct snd_soc_pcm_runtime *rtd = substream->private_data;
 110        struct snd_soc_codec *codec = rtd->socdev->card->codec;
 111
 112        /* check the jack status at stream startup */
 113        spitz_ext_control(codec);
 114        return 0;
 115}
 116
 117static int spitz_hw_params(struct snd_pcm_substream *substream,
 118        struct snd_pcm_hw_params *params)
 119{
 120        struct snd_soc_pcm_runtime *rtd = substream->private_data;
 121        struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
 122        struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
 123        unsigned int clk = 0;
 124        int ret = 0;
 125
 126        switch (params_rate(params)) {
 127        case 8000:
 128        case 16000:
 129        case 48000:
 130        case 96000:
 131                clk = 12288000;
 132                break;
 133        case 11025:
 134        case 22050:
 135        case 44100:
 136                clk = 11289600;
 137                break;
 138        }
 139
 140        /* set codec DAI configuration */
 141        ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
 142                SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 143        if (ret < 0)
 144                return ret;
 145
 146        /* set cpu DAI configuration */
 147        ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
 148                SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 149        if (ret < 0)
 150                return ret;
 151
 152        /* set the codec system clock for DAC and ADC */
 153        ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
 154                SND_SOC_CLOCK_IN);
 155        if (ret < 0)
 156                return ret;
 157
 158        /* set the I2S system clock as input (unused) */
 159        ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 160                SND_SOC_CLOCK_IN);
 161        if (ret < 0)
 162                return ret;
 163
 164        return 0;
 165}
 166
 167static struct snd_soc_ops spitz_ops = {
 168        .startup = spitz_startup,
 169        .hw_params = spitz_hw_params,
 170};
 171
 172static int spitz_get_jack(struct snd_kcontrol *kcontrol,
 173        struct snd_ctl_elem_value *ucontrol)
 174{
 175        ucontrol->value.integer.value[0] = spitz_jack_func;
 176        return 0;
 177}
 178
 179static int spitz_set_jack(struct snd_kcontrol *kcontrol,
 180        struct snd_ctl_elem_value *ucontrol)
 181{
 182        struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 183
 184        if (spitz_jack_func == ucontrol->value.integer.value[0])
 185                return 0;
 186
 187        spitz_jack_func = ucontrol->value.integer.value[0];
 188        spitz_ext_control(codec);
 189        return 1;
 190}
 191
 192static int spitz_get_spk(struct snd_kcontrol *kcontrol,
 193        struct snd_ctl_elem_value *ucontrol)
 194{
 195        ucontrol->value.integer.value[0] = spitz_spk_func;
 196        return 0;
 197}
 198
 199static int spitz_set_spk(struct snd_kcontrol *kcontrol,
 200        struct snd_ctl_elem_value *ucontrol)
 201{
 202        struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 203
 204        if (spitz_spk_func == ucontrol->value.integer.value[0])
 205                return 0;
 206
 207        spitz_spk_func = ucontrol->value.integer.value[0];
 208        spitz_ext_control(codec);
 209        return 1;
 210}
 211
 212static int spitz_mic_bias(struct snd_soc_dapm_widget *w,
 213        struct snd_kcontrol *k, int event)
 214{
 215        if (machine_is_borzoi() || machine_is_spitz())
 216                gpio_set_value(SPITZ_GPIO_MIC_BIAS,
 217                                SND_SOC_DAPM_EVENT_ON(event));
 218
 219        if (machine_is_akita())
 220                gpio_set_value(AKITA_GPIO_MIC_BIAS,
 221                                SND_SOC_DAPM_EVENT_ON(event));
 222
 223        return 0;
 224}
 225
 226/* spitz machine dapm widgets */
 227static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
 228        SND_SOC_DAPM_HP("Headphone Jack", NULL),
 229        SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
 230        SND_SOC_DAPM_SPK("Ext Spk", NULL),
 231        SND_SOC_DAPM_LINE("Line Jack", NULL),
 232
 233        /* headset is a mic and mono headphone */
 234        SND_SOC_DAPM_HP("Headset Jack", NULL),
 235};
 236
 237/* Spitz machine audio_map */
 238static const struct snd_soc_dapm_route audio_map[] = {
 239
 240        /* headphone connected to LOUT1, ROUT1 */
 241        {"Headphone Jack", NULL, "LOUT1"},
 242        {"Headphone Jack", NULL, "ROUT1"},
 243
 244        /* headset connected to ROUT1 and LINPUT1 with bias (def below) */
 245        {"Headset Jack", NULL, "ROUT1"},
 246
 247        /* ext speaker connected to LOUT2, ROUT2  */
 248        {"Ext Spk", NULL , "ROUT2"},
 249        {"Ext Spk", NULL , "LOUT2"},
 250
 251        /* mic is connected to input 1 - with bias */
 252        {"LINPUT1", NULL, "Mic Bias"},
 253        {"Mic Bias", NULL, "Mic Jack"},
 254
 255        /* line is connected to input 1 - no bias */
 256        {"LINPUT1", NULL, "Line Jack"},
 257};
 258
 259static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
 260        "Off"};
 261static const char *spk_function[] = {"On", "Off"};
 262static const struct soc_enum spitz_enum[] = {
 263        SOC_ENUM_SINGLE_EXT(5, jack_function),
 264        SOC_ENUM_SINGLE_EXT(2, spk_function),
 265};
 266
 267static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
 268        SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
 269                spitz_set_jack),
 270        SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
 271                spitz_set_spk),
 272};
 273
 274/*
 275 * Logic for a wm8750 as connected on a Sharp SL-Cxx00 Device
 276 */
 277static int spitz_wm8750_init(struct snd_soc_codec *codec)
 278{
 279        int err;
 280
 281        /* NC codec pins */
 282        snd_soc_dapm_nc_pin(codec, "RINPUT1");
 283        snd_soc_dapm_nc_pin(codec, "LINPUT2");
 284        snd_soc_dapm_nc_pin(codec, "RINPUT2");
 285        snd_soc_dapm_nc_pin(codec, "LINPUT3");
 286        snd_soc_dapm_nc_pin(codec, "RINPUT3");
 287        snd_soc_dapm_nc_pin(codec, "OUT3");
 288        snd_soc_dapm_nc_pin(codec, "MONO1");
 289
 290        /* Add spitz specific controls */
 291        err = snd_soc_add_controls(codec, wm8750_spitz_controls,
 292                                ARRAY_SIZE(wm8750_spitz_controls));
 293        if (err < 0)
 294                return err;
 295
 296        /* Add spitz specific widgets */
 297        snd_soc_dapm_new_controls(codec, wm8750_dapm_widgets,
 298                                  ARRAY_SIZE(wm8750_dapm_widgets));
 299
 300        /* Set up spitz specific audio paths */
 301        snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 302
 303        snd_soc_dapm_sync(codec);
 304        return 0;
 305}
 306
 307/* spitz digital audio interface glue - connects codec <--> CPU */
 308static struct snd_soc_dai_link spitz_dai = {
 309        .name = "wm8750",
 310        .stream_name = "WM8750",
 311        .cpu_dai = &pxa_i2s_dai,
 312        .codec_dai = &wm8750_dai,
 313        .init = spitz_wm8750_init,
 314        .ops = &spitz_ops,
 315};
 316
 317/* spitz audio machine driver */
 318static struct snd_soc_card snd_soc_spitz = {
 319        .name = "Spitz",
 320        .platform = &pxa2xx_soc_platform,
 321        .dai_link = &spitz_dai,
 322        .num_links = 1,
 323};
 324
 325/* spitz audio private data */
 326static struct wm8750_setup_data spitz_wm8750_setup = {
 327        .i2c_bus = 0,
 328        .i2c_address = 0x1b,
 329};
 330
 331/* spitz audio subsystem */
 332static struct snd_soc_device spitz_snd_devdata = {
 333        .card = &snd_soc_spitz,
 334        .codec_dev = &soc_codec_dev_wm8750,
 335        .codec_data = &spitz_wm8750_setup,
 336};
 337
 338static struct platform_device *spitz_snd_device;
 339
 340static int __init spitz_init(void)
 341{
 342        int ret;
 343
 344        if (!(machine_is_spitz() || machine_is_borzoi() || machine_is_akita()))
 345                return -ENODEV;
 346
 347        spitz_snd_device = platform_device_alloc("soc-audio", -1);
 348        if (!spitz_snd_device)
 349                return -ENOMEM;
 350
 351        platform_set_drvdata(spitz_snd_device, &spitz_snd_devdata);
 352        spitz_snd_devdata.dev = &spitz_snd_device->dev;
 353        ret = platform_device_add(spitz_snd_device);
 354
 355        if (ret)
 356                platform_device_put(spitz_snd_device);
 357
 358        return ret;
 359}
 360
 361static void __exit spitz_exit(void)
 362{
 363        platform_device_unregister(spitz_snd_device);
 364}
 365
 366module_init(spitz_init);
 367module_exit(spitz_exit);
 368
 369MODULE_AUTHOR("Richard Purdie");
 370MODULE_DESCRIPTION("ALSA SoC Spitz");
 371MODULE_LICENSE("GPL");
 372