LXR linux/sound/soc/imx/wm1133-ev1.c

   1/*
   2 *  wm1133-ev1.c - Audio for WM1133-EV1 on i.MX31ADS
   3 *
   4 *  Copyright (c) 2010 Wolfson Microelectronics plc
   5 *  Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
   6 *
   7 *  Based on an earlier driver for the same hardware by Liam Girdwood.
   8 *
   9 *  This program is free software; you can redistribute  it and/or modify it
  10 *  under  the terms of  the GNU General  Public License as published by the
  11 *  Free Software Foundation;  either version 2 of the  License, or (at your
  12 *  option) any later version.
  13 */
  14
  15#include <linux/platform_device.h>
  16#include <linux/clk.h>
  17#include <linux/module.h>
  18#include <sound/core.h>
  19#include <sound/jack.h>
  20#include <sound/pcm.h>
  21#include <sound/pcm_params.h>
  22#include <sound/soc.h>
  23
  24#include <mach/audmux.h>
  25
  26#include "imx-ssi.h"
  27#include "../codecs/wm8350.h"
  28
  29/* There is a silicon mic on the board optionally connected via a solder pad
  30 * SP1.  Define this to enable it.
  31 */
  32#undef USE_SIMIC
  33
  34struct _wm8350_audio {
  35        unsigned int channels;
  36        snd_pcm_format_t format;
  37        unsigned int rate;
  38        unsigned int sysclk;
  39        unsigned int bclkdiv;
  40        unsigned int clkdiv;
  41        unsigned int lr_rate;
  42};
  43
  44/* in order of power consumption per rate (lowest first) */
  45static const struct _wm8350_audio wm8350_audio[] = {
  46        /* 16bit mono modes */
  47        {1, SNDRV_PCM_FORMAT_S16_LE, 8000, 12288000 >> 1,
  48         WM8350_BCLK_DIV_48, WM8350_DACDIV_3, 16,},
  49
  50        /* 16 bit stereo modes */
  51        {2, SNDRV_PCM_FORMAT_S16_LE, 8000, 12288000,
  52         WM8350_BCLK_DIV_48, WM8350_DACDIV_6, 32,},
  53        {2, SNDRV_PCM_FORMAT_S16_LE, 16000, 12288000,
  54         WM8350_BCLK_DIV_24, WM8350_DACDIV_3, 32,},
  55        {2, SNDRV_PCM_FORMAT_S16_LE, 32000, 12288000,
  56         WM8350_BCLK_DIV_12, WM8350_DACDIV_1_5, 32,},
  57        {2, SNDRV_PCM_FORMAT_S16_LE, 48000, 12288000,
  58         WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
  59        {2, SNDRV_PCM_FORMAT_S16_LE, 96000, 24576000,
  60         WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
  61        {2, SNDRV_PCM_FORMAT_S16_LE, 11025, 11289600,
  62         WM8350_BCLK_DIV_32, WM8350_DACDIV_4, 32,},
  63        {2, SNDRV_PCM_FORMAT_S16_LE, 22050, 11289600,
  64         WM8350_BCLK_DIV_16, WM8350_DACDIV_2, 32,},
  65        {2, SNDRV_PCM_FORMAT_S16_LE, 44100, 11289600,
  66         WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
  67        {2, SNDRV_PCM_FORMAT_S16_LE, 88200, 22579200,
  68         WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
  69
  70        /* 24bit stereo modes */
  71        {2, SNDRV_PCM_FORMAT_S24_LE, 48000, 12288000,
  72         WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
  73        {2, SNDRV_PCM_FORMAT_S24_LE, 96000, 24576000,
  74         WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
  75        {2, SNDRV_PCM_FORMAT_S24_LE, 44100, 11289600,
  76         WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
  77        {2, SNDRV_PCM_FORMAT_S24_LE, 88200, 22579200,
  78         WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
  79};
  80
  81static int wm1133_ev1_hw_params(struct snd_pcm_substream *substream,
  82                                struct snd_pcm_hw_params *params)
  83{
  84        struct snd_soc_pcm_runtime *rtd = substream->private_data;
  85        struct snd_soc_dai *codec_dai = rtd->codec_dai;
  86        struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  87        int i, found = 0;
  88        snd_pcm_format_t format = params_format(params);
  89        unsigned int rate = params_rate(params);
  90        unsigned int channels = params_channels(params);
  91        u32 dai_format;
  92
  93        /* find the correct audio parameters */
  94        for (i = 0; i < ARRAY_SIZE(wm8350_audio); i++) {
  95                if (rate == wm8350_audio[i].rate &&
  96                    format == wm8350_audio[i].format &&
  97                    channels == wm8350_audio[i].channels) {
  98                        found = 1;
  99                        break;
 100                }
 101        }
 102        if (!found)
 103                return -EINVAL;
 104
 105        /* codec FLL input is 14.75 MHz from MCLK */
 106        snd_soc_dai_set_pll(codec_dai, 0, 0, 14750000, wm8350_audio[i].sysclk);
 107
 108        dai_format = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 109                SND_SOC_DAIFMT_CBM_CFM;
 110
 111        /* set codec DAI configuration */
 112        snd_soc_dai_set_fmt(codec_dai, dai_format);
 113
 114        /* set cpu DAI configuration */
 115        snd_soc_dai_set_fmt(cpu_dai, dai_format);
 116
 117        /* TODO: The SSI driver should figure this out for us */
 118        switch (channels) {
 119        case 2:
 120                snd_soc_dai_set_tdm_slot(cpu_dai, 0xffffffc, 0xffffffc, 2, 0);
 121                break;
 122        case 1:
 123                snd_soc_dai_set_tdm_slot(cpu_dai, 0xffffffe, 0xffffffe, 1, 0);
 124                break;
 125        default:
 126                return -EINVAL;
 127        }
 128
 129        /* set MCLK as the codec system clock for DAC and ADC */
 130        snd_soc_dai_set_sysclk(codec_dai, WM8350_MCLK_SEL_PLL_MCLK,
 131                               wm8350_audio[i].sysclk, SND_SOC_CLOCK_IN);
 132
 133        /* set codec BCLK division for sample rate */
 134        snd_soc_dai_set_clkdiv(codec_dai, WM8350_BCLK_CLKDIV,
 135                               wm8350_audio[i].bclkdiv);
 136
 137        /* DAI is synchronous and clocked with DAC LRCLK & ADC LRC */
 138        snd_soc_dai_set_clkdiv(codec_dai,
 139                               WM8350_DACLR_CLKDIV, wm8350_audio[i].lr_rate);
 140        snd_soc_dai_set_clkdiv(codec_dai,
 141                               WM8350_ADCLR_CLKDIV, wm8350_audio[i].lr_rate);
 142
 143        /* now configure DAC and ADC clocks */
 144        snd_soc_dai_set_clkdiv(codec_dai,
 145                               WM8350_DAC_CLKDIV, wm8350_audio[i].clkdiv);
 146
 147        snd_soc_dai_set_clkdiv(codec_dai,
 148                               WM8350_ADC_CLKDIV, wm8350_audio[i].clkdiv);
 149
 150        return 0;
 151}
 152
 153static struct snd_soc_ops wm1133_ev1_ops = {
 154        .hw_params = wm1133_ev1_hw_params,
 155};
 156
 157static const struct snd_soc_dapm_widget wm1133_ev1_widgets[] = {
 158#ifdef USE_SIMIC
 159        SND_SOC_DAPM_MIC("SiMIC", NULL),
 160#endif
 161        SND_SOC_DAPM_MIC("Mic1 Jack", NULL),
 162        SND_SOC_DAPM_MIC("Mic2 Jack", NULL),
 163        SND_SOC_DAPM_LINE("Line In Jack", NULL),
 164        SND_SOC_DAPM_LINE("Line Out Jack", NULL),
 165        SND_SOC_DAPM_HP("Headphone Jack", NULL),
 166};
 167
 168/* imx32ads soc_card audio map */
 169static const struct snd_soc_dapm_route wm1133_ev1_map[] = {
 170
 171#ifdef USE_SIMIC
 172        /* SiMIC --> IN1LN (with automatic bias) via SP1 */
 173        { "IN1LN", NULL, "Mic Bias" },
 174        { "Mic Bias", NULL, "SiMIC" },
 175#endif
 176
 177        /* Mic 1 Jack --> IN1LN and IN1LP (with automatic bias) */
 178        { "IN1LN", NULL, "Mic Bias" },
 179        { "IN1LP", NULL, "Mic1 Jack" },
 180        { "Mic Bias", NULL, "Mic1 Jack" },
 181
 182        /* Mic 2 Jack --> IN1RN and IN1RP (with automatic bias) */
 183        { "IN1RN", NULL, "Mic Bias" },
 184        { "IN1RP", NULL, "Mic2 Jack" },
 185        { "Mic Bias", NULL, "Mic2 Jack" },
 186
 187        /* Line in Jack --> AUX (L+R) */
 188        { "IN3R", NULL, "Line In Jack" },
 189        { "IN3L", NULL, "Line In Jack" },
 190
 191        /* Out1 --> Headphone Jack */
 192        { "Headphone Jack", NULL, "OUT1R" },
 193        { "Headphone Jack", NULL, "OUT1L" },
 194
 195        /* Out1 --> Line Out Jack */
 196        { "Line Out Jack", NULL, "OUT2R" },
 197        { "Line Out Jack", NULL, "OUT2L" },
 198};
 199
 200static struct snd_soc_jack hp_jack;
 201
 202static struct snd_soc_jack_pin hp_jack_pins[] = {
 203        { .pin = "Headphone Jack", .mask = SND_JACK_HEADPHONE },
 204};
 205
 206static struct snd_soc_jack mic_jack;
 207
 208static struct snd_soc_jack_pin mic_jack_pins[] = {
 209        { .pin = "Mic1 Jack", .mask = SND_JACK_MICROPHONE },
 210        { .pin = "Mic2 Jack", .mask = SND_JACK_MICROPHONE },
 211};
 212
 213static int wm1133_ev1_init(struct snd_soc_pcm_runtime *rtd)
 214{
 215        struct snd_soc_codec *codec = rtd->codec;
 216        struct snd_soc_dapm_context *dapm = &codec->dapm;
 217
 218        snd_soc_dapm_new_controls(dapm, wm1133_ev1_widgets,
 219                                  ARRAY_SIZE(wm1133_ev1_widgets));
 220
 221        snd_soc_dapm_add_routes(dapm, wm1133_ev1_map,
 222                                ARRAY_SIZE(wm1133_ev1_map));
 223
 224        /* Headphone jack detection */
 225        snd_soc_jack_new(codec, "Headphone", SND_JACK_HEADPHONE, &hp_jack);
 226        snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins),
 227                              hp_jack_pins);
 228        wm8350_hp_jack_detect(codec, WM8350_JDR, &hp_jack, SND_JACK_HEADPHONE);
 229
 230        /* Microphone jack detection */
 231        snd_soc_jack_new(codec, "Microphone",
 232                         SND_JACK_MICROPHONE | SND_JACK_BTN_0, &mic_jack);
 233        snd_soc_jack_add_pins(&mic_jack, ARRAY_SIZE(mic_jack_pins),
 234                              mic_jack_pins);
 235        wm8350_mic_jack_detect(codec, &mic_jack, SND_JACK_MICROPHONE,
 236                               SND_JACK_BTN_0);
 237
 238        snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
 239
 240        return 0;
 241}
 242
 243
 244static struct snd_soc_dai_link wm1133_ev1_dai = {
 245        .name = "WM1133-EV1",
 246        .stream_name = "Audio",
 247        .cpu_dai_name = "imx-ssi.0",
 248        .codec_dai_name = "wm8350-hifi",
 249        .platform_name = "imx-fiq-pcm-audio.0",
 250        .codec_name = "wm8350-codec.0-0x1a",
 251        .init = wm1133_ev1_init,
 252        .ops = &wm1133_ev1_ops,
 253        .symmetric_rates = 1,
 254};
 255
 256static struct snd_soc_card wm1133_ev1 = {
 257        .name = "WM1133-EV1",
 258        .owner = THIS_MODULE,
 259        .dai_link = &wm1133_ev1_dai,
 260        .num_links = 1,
 261};
 262
 263static struct platform_device *wm1133_ev1_snd_device;
 264
 265static int __init wm1133_ev1_audio_init(void)
 266{
 267        int ret;
 268        unsigned int ptcr, pdcr;
 269
 270        /* SSI0 mastered by port 5 */
 271        ptcr = MXC_AUDMUX_V2_PTCR_SYN |
 272                MXC_AUDMUX_V2_PTCR_TFSDIR |
 273                MXC_AUDMUX_V2_PTCR_TFSEL(MX31_AUDMUX_PORT5_SSI_PINS_5) |
 274                MXC_AUDMUX_V2_PTCR_TCLKDIR |
 275                MXC_AUDMUX_V2_PTCR_TCSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
 276        pdcr = MXC_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
 277        mxc_audmux_v2_configure_port(MX31_AUDMUX_PORT1_SSI0, ptcr, pdcr);
 278
 279        ptcr = MXC_AUDMUX_V2_PTCR_SYN;
 280        pdcr = MXC_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT1_SSI0);
 281        mxc_audmux_v2_configure_port(MX31_AUDMUX_PORT5_SSI_PINS_5, ptcr, pdcr);
 282
 283        wm1133_ev1_snd_device = platform_device_alloc("soc-audio", -1);
 284        if (!wm1133_ev1_snd_device)
 285                return -ENOMEM;
 286
 287        platform_set_drvdata(wm1133_ev1_snd_device, &wm1133_ev1);
 288        ret = platform_device_add(wm1133_ev1_snd_device);
 289
 290        if (ret)
 291                platform_device_put(wm1133_ev1_snd_device);
 292
 293        return ret;
 294}
 295module_init(wm1133_ev1_audio_init);
 296
 297static void __exit wm1133_ev1_audio_exit(void)
 298{
 299        platform_device_unregister(wm1133_ev1_snd_device);
 300}
 301module_exit(wm1133_ev1_audio_exit);
 302
 303MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 304MODULE_DESCRIPTION("Audio for WM1133-EV1 on i.MX31ADS");
 305MODULE_LICENSE("GPL");
 306