release/src-rt-6.x.4708/linux/linux-2.6.36/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 <sound/core.h>
  18 #include <sound/jack.h>
  19 #include <sound/pcm.h>
  20 #include <sound/pcm_params.h>
  21 #include <sound/soc.h>
  22 #include <sound/soc-dapm.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
  34 struct _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) */
  45 static 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
  81 static 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->dai->codec_dai;
  86         struct snd_soc_dai *cpu_dai = rtd->dai->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
 153 static struct snd_soc_ops wm1133_ev1_ops = {
 154         .hw_params = wm1133_ev1_hw_params,
 155 };
 156
 157 static 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 */
 169 static 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
 200 static struct snd_soc_jack hp_jack;
 201
 202 static struct snd_soc_jack_pin hp_jack_pins[] = {
 203         { .pin = "Headphone Jack", .mask = SND_JACK_HEADPHONE },
 204 };
 205
 206 static struct snd_soc_jack mic_jack;
 207
 208 static 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
 213 static int wm1133_ev1_init(struct snd_soc_codec *codec)
 214 {
 215         struct snd_soc_card *card = codec->socdev->card;
 216
 217         snd_soc_dapm_new_controls(codec, wm1133_ev1_widgets,
 218                                   ARRAY_SIZE(wm1133_ev1_widgets));
 219
 220         snd_soc_dapm_add_routes(codec, wm1133_ev1_map,
 221                                 ARRAY_SIZE(wm1133_ev1_map));
 222
 223         /* Headphone jack detection */
 224         snd_soc_jack_new(card, "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(card, "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(codec, "Mic Bias");
 238
 239         return 0;
 240 }
 241
 242
 243 static struct snd_soc_dai_link wm1133_ev1_dai = {
 244         .name = "WM1133-EV1",
 245         .stream_name = "Audio",
 246         .cpu_dai = &imx_ssi_pcm_dai[0],
 247         .codec_dai = &wm8350_dai,
 248         .init = wm1133_ev1_init,
 249         .ops = &wm1133_ev1_ops,
 250         .symmetric_rates = 1,
 251 };
 252
 253 static struct snd_soc_card wm1133_ev1 = {
 254         .name = "WM1133-EV1",
 255         .platform = &imx_soc_platform,
 256         .dai_link = &wm1133_ev1_dai,
 257         .num_links = 1,
 258 };
 259
 260 static struct snd_soc_device wm1133_ev1_snd_devdata = {
 261         .card = &wm1133_ev1,
 262         .codec_dev = &soc_codec_dev_wm8350,
 263 };
 264
 265 static struct platform_device *wm1133_ev1_snd_device;
 266
 267 static int __init wm1133_ev1_audio_init(void)
 268 {
 269         int ret;
 270         unsigned int ptcr, pdcr;
 271
 272         /* SSI0 mastered by port 5 */
 273         ptcr = MXC_AUDMUX_V2_PTCR_SYN |
 274                 MXC_AUDMUX_V2_PTCR_TFSDIR |
 275                 MXC_AUDMUX_V2_PTCR_TFSEL(MX31_AUDMUX_PORT5_SSI_PINS_5) |
 276                 MXC_AUDMUX_V2_PTCR_TCLKDIR |
 277                 MXC_AUDMUX_V2_PTCR_TCSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
 278         pdcr = MXC_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
 279         mxc_audmux_v2_configure_port(MX31_AUDMUX_PORT1_SSI0, ptcr, pdcr);
 280
 281         ptcr = MXC_AUDMUX_V2_PTCR_SYN;
 282         pdcr = MXC_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT1_SSI0);
 283         mxc_audmux_v2_configure_port(MX31_AUDMUX_PORT5_SSI_PINS_5, ptcr, pdcr);
 284
 285         wm1133_ev1_snd_device = platform_device_alloc("soc-audio", -1);
 286         if (!wm1133_ev1_snd_device)
 287                 return -ENOMEM;
 288
 289         platform_set_drvdata(wm1133_ev1_snd_device, &wm1133_ev1_snd_devdata);
 290         wm1133_ev1_snd_devdata.dev = &wm1133_ev1_snd_device->dev;
 291         ret = platform_device_add(wm1133_ev1_snd_device);
 292
 293         if (ret)
 294                 platform_device_put(wm1133_ev1_snd_device);
 295
 296         return ret;
 297 }
 298 module_init(wm1133_ev1_audio_init);
 299
 300 static void __exit wm1133_ev1_audio_exit(void)
 301 {
 302         platform_device_unregister(wm1133_ev1_snd_device);
 303 }
 304 module_exit(wm1133_ev1_audio_exit);
 305
 306 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 307 MODULE_DESCRIPTION("Audio for WM1133-EV1 on i.MX31ADS");
 308 MODULE_LICENSE("GPL");