LXR linux/sound/soc/fsl/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 "imx-ssi.h"
  25#include "../codecs/wm8350.h"
  26#include "imx-audmux.h"
  27
  28/* There is a silicon mic on the board optionally connected via a solder pad
  29 * SP1.  Define this to enable it.
  30 */
  31#undef USE_SIMIC
  32
  33struct _wm8350_audio {
  34        unsigned int channels;
  35        snd_pcm_format_t format;
  36        unsigned int rate;
  37        unsigned int sysclk;
  38        unsigned int bclkdiv;
  39        unsigned int clkdiv;
  40        unsigned int lr_rate;
  41};
  42
  43/* in order of power consumption per rate (lowest first) */
  44static const struct _wm8350_audio wm8350_audio[] = {
  45        /* 16bit mono modes */
  46        {1, SNDRV_PCM_FORMAT_S16_LE, 8000, 12288000 >> 1,
  47         WM8350_BCLK_DIV_48, WM8350_DACDIV_3, 16,},
  48
  49        /* 16 bit stereo modes */
  50        {2, SNDRV_PCM_FORMAT_S16_LE, 8000, 12288000,
  51         WM8350_BCLK_DIV_48, WM8350_DACDIV_6, 32,},
  52        {2, SNDRV_PCM_FORMAT_S16_LE, 16000, 12288000,
  53         WM8350_BCLK_DIV_24, WM8350_DACDIV_3, 32,},
  54        {2, SNDRV_PCM_FORMAT_S16_LE, 32000, 12288000,
  55         WM8350_BCLK_DIV_12, WM8350_DACDIV_1_5, 32,},
  56        {2, SNDRV_PCM_FORMAT_S16_LE, 48000, 12288000,
  57         WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
  58        {2, SNDRV_PCM_FORMAT_S16_LE, 96000, 24576000,
  59         WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
  60        {2, SNDRV_PCM_FORMAT_S16_LE, 11025, 11289600,
  61         WM8350_BCLK_DIV_32, WM8350_DACDIV_4, 32,},
  62        {2, SNDRV_PCM_FORMAT_S16_LE, 22050, 11289600,
  63         WM8350_BCLK_DIV_16, WM8350_DACDIV_2, 32,},
  64        {2, SNDRV_PCM_FORMAT_S16_LE, 44100, 11289600,
  65         WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
  66        {2, SNDRV_PCM_FORMAT_S16_LE, 88200, 22579200,
  67         WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
  68
  69        /* 24bit stereo modes */
  70        {2, SNDRV_PCM_FORMAT_S24_LE, 48000, 12288000,
  71         WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
  72        {2, SNDRV_PCM_FORMAT_S24_LE, 96000, 24576000,
  73         WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
  74        {2, SNDRV_PCM_FORMAT_S24_LE, 44100, 11289600,
  75         WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
  76        {2, SNDRV_PCM_FORMAT_S24_LE, 88200, 22579200,
  77         WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
  78};
  79
  80static int wm1133_ev1_hw_params(struct snd_pcm_substream *substream,
  81                                struct snd_pcm_hw_params *params)
  82{
  83        struct snd_soc_pcm_runtime *rtd = substream->private_data;
  84        struct snd_soc_dai *codec_dai = rtd->codec_dai;
  85        struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  86        int i, found = 0;
  87        snd_pcm_format_t format = params_format(params);
  88        unsigned int rate = params_rate(params);
  89        unsigned int channels = params_channels(params);
  90        u32 dai_format;
  91
  92        /* find the correct audio parameters */
  93        for (i = 0; i < ARRAY_SIZE(wm8350_audio); i++) {
  94                if (rate == wm8350_audio[i].rate &&
  95                    format == wm8350_audio[i].format &&
  96                    channels == wm8350_audio[i].channels) {
  97                        found = 1;
  98                        break;
  99                }
 100        }
 101        if (!found)
 102                return -EINVAL;
 103
 104        /* codec FLL input is 14.75 MHz from MCLK */
 105        snd_soc_dai_set_pll(codec_dai, 0, 0, 14750000, wm8350_audio[i].sysclk);
 106
 107        dai_format = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 108                SND_SOC_DAIFMT_CBM_CFM;
 109
 110        /* set codec DAI configuration */
 111        snd_soc_dai_set_fmt(codec_dai, dai_format);
 112
 113        /* set cpu DAI configuration */
 114        snd_soc_dai_set_fmt(cpu_dai, dai_format);
 115
 116        /* TODO: The SSI driver should figure this out for us */
 117        switch (channels) {
 118        case 2:
 119                snd_soc_dai_set_tdm_slot(cpu_dai, 0xffffffc, 0xffffffc, 2, 0);
 120                break;
 121        case 1:
 122                snd_soc_dai_set_tdm_slot(cpu_dai, 0xffffffe, 0xffffffe, 1, 0);
 123                break;
 124        default:
 125                return -EINVAL;
 126        }
 127
 128        /* set MCLK as the codec system clock for DAC and ADC */
 129        snd_soc_dai_set_sysclk(codec_dai, WM8350_MCLK_SEL_PLL_MCLK,
 130                               wm8350_audio[i].sysclk, SND_SOC_CLOCK_IN);
 131
 132        /* set codec BCLK division for sample rate */
 133        snd_soc_dai_set_clkdiv(codec_dai, WM8350_BCLK_CLKDIV,
 134                               wm8350_audio[i].bclkdiv);
 135
 136        /* DAI is synchronous and clocked with DAC LRCLK & ADC LRC */
 137        snd_soc_dai_set_clkdiv(codec_dai,
 138                               WM8350_DACLR_CLKDIV, wm8350_audio[i].lr_rate);
 139        snd_soc_dai_set_clkdiv(codec_dai,
 140                               WM8350_ADCLR_CLKDIV, wm8350_audio[i].lr_rate);
 141
 142        /* now configure DAC and ADC clocks */
 143        snd_soc_dai_set_clkdiv(codec_dai,
 144                               WM8350_DAC_CLKDIV, wm8350_audio[i].clkdiv);
 145
 146        snd_soc_dai_set_clkdiv(codec_dai,
 147                               WM8350_ADC_CLKDIV, wm8350_audio[i].clkdiv);
 148
 149        return 0;
 150}
 151
 152static struct snd_soc_ops wm1133_ev1_ops = {
 153        .hw_params = wm1133_ev1_hw_params,
 154};
 155
 156static const struct snd_soc_dapm_widget wm1133_ev1_widgets[] = {
 157#ifdef USE_SIMIC
 158        SND_SOC_DAPM_MIC("SiMIC", NULL),
 159#endif
 160        SND_SOC_DAPM_MIC("Mic1 Jack", NULL),
 161        SND_SOC_DAPM_MIC("Mic2 Jack", NULL),
 162        SND_SOC_DAPM_LINE("Line In Jack", NULL),
 163        SND_SOC_DAPM_LINE("Line Out Jack", NULL),
 164        SND_SOC_DAPM_HP("Headphone Jack", NULL),
 165};
 166
 167/* imx32ads soc_card audio map */
 168static const struct snd_soc_dapm_route wm1133_ev1_map[] = {
 169
 170#ifdef USE_SIMIC
 171        /* SiMIC --> IN1LN (with automatic bias) via SP1 */
 172        { "IN1LN", NULL, "Mic Bias" },
 173        { "Mic Bias", NULL, "SiMIC" },
 174#endif
 175
 176        /* Mic 1 Jack --> IN1LN and IN1LP (with automatic bias) */
 177        { "IN1LN", NULL, "Mic Bias" },
 178        { "IN1LP", NULL, "Mic1 Jack" },
 179        { "Mic Bias", NULL, "Mic1 Jack" },
 180
 181        /* Mic 2 Jack --> IN1RN and IN1RP (with automatic bias) */
 182        { "IN1RN", NULL, "Mic Bias" },
 183        { "IN1RP", NULL, "Mic2 Jack" },
 184        { "Mic Bias", NULL, "Mic2 Jack" },
 185
 186        /* Line in Jack --> AUX (L+R) */
 187        { "IN3R", NULL, "Line In Jack" },
 188        { "IN3L", NULL, "Line In Jack" },
 189
 190        /* Out1 --> Headphone Jack */
 191        { "Headphone Jack", NULL, "OUT1R" },
 192        { "Headphone Jack", NULL, "OUT1L" },
 193
 194        /* Out1 --> Line Out Jack */
 195        { "Line Out Jack", NULL, "OUT2R" },
 196        { "Line Out Jack", NULL, "OUT2L" },
 197};
 198
 199static struct snd_soc_jack hp_jack;
 200
 201static struct snd_soc_jack_pin hp_jack_pins[] = {
 202        { .pin = "Headphone Jack", .mask = SND_JACK_HEADPHONE },
 203};
 204
 205static struct snd_soc_jack mic_jack;
 206
 207static struct snd_soc_jack_pin mic_jack_pins[] = {
 208        { .pin = "Mic1 Jack", .mask = SND_JACK_MICROPHONE },
 209        { .pin = "Mic2 Jack", .mask = SND_JACK_MICROPHONE },
 210};
 211
 212static int wm1133_ev1_init(struct snd_soc_pcm_runtime *rtd)
 213{
 214        struct snd_soc_codec *codec = rtd->codec;
 215        struct snd_soc_dapm_context *dapm = &codec->dapm;
 216
 217        snd_soc_dapm_new_controls(dapm, wm1133_ev1_widgets,
 218                                  ARRAY_SIZE(wm1133_ev1_widgets));
 219
 220        snd_soc_dapm_add_routes(dapm, wm1133_ev1_map,
 221                                ARRAY_SIZE(wm1133_ev1_map));
 222
 223        /* Headphone jack detection */
 224        snd_soc_jack_new(codec, "Headphone", SND_JACK_HEADPHONE, &hp_jack);
 225        snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins),
 226                              hp_jack_pins);
 227        wm8350_hp_jack_detect(codec, WM8350_JDR, &hp_jack, SND_JACK_HEADPHONE);
 228
 229        /* Microphone jack detection */
 230        snd_soc_jack_new(codec, "Microphone",
 231                         SND_JACK_MICROPHONE | SND_JACK_BTN_0, &mic_jack);
 232        snd_soc_jack_add_pins(&mic_jack, ARRAY_SIZE(mic_jack_pins),
 233                              mic_jack_pins);
 234        wm8350_mic_jack_detect(codec, &mic_jack, SND_JACK_MICROPHONE,
 235                               SND_JACK_BTN_0);
 236
 237        snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
 238
 239        return 0;
 240}
 241
 242
 243static struct snd_soc_dai_link wm1133_ev1_dai = {
 244        .name = "WM1133-EV1",
 245        .stream_name = "Audio",
 246        .cpu_dai_name = "imx-ssi.0",
 247        .codec_dai_name = "wm8350-hifi",
 248        .platform_name = "imx-ssi.0",
 249        .codec_name = "wm8350-codec.0-0x1a",
 250        .init = wm1133_ev1_init,
 251        .ops = &wm1133_ev1_ops,
 252        .symmetric_rates = 1,
 253};
 254
 255static struct snd_soc_card wm1133_ev1 = {
 256        .name = "WM1133-EV1",
 257        .owner = THIS_MODULE,
 258        .dai_link = &wm1133_ev1_dai,
 259        .num_links = 1,
 260};
 261
 262static struct platform_device *wm1133_ev1_snd_device;
 263
 264static int __init wm1133_ev1_audio_init(void)
 265{
 266        int ret;
 267        unsigned int ptcr, pdcr;
 268
 269        /* SSI0 mastered by port 5 */
 270        ptcr = IMX_AUDMUX_V2_PTCR_SYN |
 271                IMX_AUDMUX_V2_PTCR_TFSDIR |
 272                IMX_AUDMUX_V2_PTCR_TFSEL(MX31_AUDMUX_PORT5_SSI_PINS_5) |
 273                IMX_AUDMUX_V2_PTCR_TCLKDIR |
 274                IMX_AUDMUX_V2_PTCR_TCSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
 275        pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
 276        imx_audmux_v2_configure_port(MX31_AUDMUX_PORT1_SSI0, ptcr, pdcr);
 277
 278        ptcr = IMX_AUDMUX_V2_PTCR_SYN;
 279        pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT1_SSI0);
 280        imx_audmux_v2_configure_port(MX31_AUDMUX_PORT5_SSI_PINS_5, ptcr, pdcr);
 281
 282        wm1133_ev1_snd_device = platform_device_alloc("soc-audio", -1);
 283        if (!wm1133_ev1_snd_device)
 284                return -ENOMEM;
 285
 286        platform_set_drvdata(wm1133_ev1_snd_device, &wm1133_ev1);
 287        ret = platform_device_add(wm1133_ev1_snd_device);
 288
 289        if (ret)
 290                platform_device_put(wm1133_ev1_snd_device);
 291
 292        return ret;
 293}
 294module_init(wm1133_ev1_audio_init);
 295
 296static void __exit wm1133_ev1_audio_exit(void)
 297{
 298        platform_device_unregister(wm1133_ev1_snd_device);
 299}
 300module_exit(wm1133_ev1_audio_exit);
 301
 302MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 303MODULE_DESCRIPTION("Audio for WM1133-EV1 on i.MX31ADS");
 304MODULE_LICENSE("GPL");
 305