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
  23 #include <mach/audmux.h>
  24
  25 #include "imx-ssi.h"
  26 #include "../codecs/wm8350.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
  33 struct _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) */
  44 static 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
  80 static 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
 152 static struct snd_soc_ops wm1133_ev1_ops = {
 153         .hw_params = wm1133_ev1_hw_params,
 154 };
 155
 156 static 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 */
 168 static 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
 199 static struct snd_soc_jack hp_jack;
 200
 201 static struct snd_soc_jack_pin hp_jack_pins[] = {
 202         { .pin = "Headphone Jack", .mask = SND_JACK_HEADPHONE },
 203 };
 204
 205 static struct snd_soc_jack mic_jack;
 206
 207 static 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
 212 static 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
 243 static 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-fiq-pcm-audio.0",
 249         .codec_name = "wm8350-codec.0-0x1a",
 250         .init = wm1133_ev1_init,
 251         .ops = &wm1133_ev1_ops,
 252         .symmetric_rates = 1,
 253 };
 254
 255 static struct snd_soc_card wm1133_ev1 = {
 256         .name = "WM1133-EV1",
 257         .dai_link = &wm1133_ev1_dai,
 258         .num_links = 1,
 259 };
 260
 261 static struct platform_device *wm1133_ev1_snd_device;
 262
 263 static int __init wm1133_ev1_audio_init(void)
 264 {
 265         int ret;
 266         unsigned int ptcr, pdcr;
 267
 268         /* SSI0 mastered by port 5 */
 269         ptcr = MXC_AUDMUX_V2_PTCR_SYN |
 270                 MXC_AUDMUX_V2_PTCR_TFSDIR |
 271                 MXC_AUDMUX_V2_PTCR_TFSEL(MX31_AUDMUX_PORT5_SSI_PINS_5) |
 272                 MXC_AUDMUX_V2_PTCR_TCLKDIR |
 273                 MXC_AUDMUX_V2_PTCR_TCSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
 274         pdcr = MXC_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
 275         mxc_audmux_v2_configure_port(MX31_AUDMUX_PORT1_SSI0, ptcr, pdcr);
 276
 277         ptcr = MXC_AUDMUX_V2_PTCR_SYN;
 278         pdcr = MXC_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT1_SSI0);
 279         mxc_audmux_v2_configure_port(MX31_AUDMUX_PORT5_SSI_PINS_5, ptcr, pdcr);
 280
 281         wm1133_ev1_snd_device = platform_device_alloc("soc-audio", -1);
 282         if (!wm1133_ev1_snd_device)
 283                 return -ENOMEM;
 284
 285         platform_set_drvdata(wm1133_ev1_snd_device, &wm1133_ev1);
 286         ret = platform_device_add(wm1133_ev1_snd_device);
 287
 288         if (ret)
 289                 platform_device_put(wm1133_ev1_snd_device);
 290
 291         return ret;
 292 }
 293 module_init(wm1133_ev1_audio_init);
 294
 295 static void __exit wm1133_ev1_audio_exit(void)
 296 {
 297         platform_device_unregister(wm1133_ev1_snd_device);
 298 }
 299 module_exit(wm1133_ev1_audio_exit);
 300
 301 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 302 MODULE_DESCRIPTION("Audio for WM1133-EV1 on i.MX31ADS");
 303 MODULE_LICENSE("GPL");