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
  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
  91         /* find the correct audio parameters */
  92         for (i = 0; i < ARRAY_SIZE(wm8350_audio); i++) {
  93                 if (rate == wm8350_audio[i].rate &&
  94                     format == wm8350_audio[i].format &&
  95                     channels == wm8350_audio[i].channels) {
  96                         found = 1;
  97                         break;
  98                 }
  99         }
 100         if (!found)
 101                 return -EINVAL;
 102
 103         /* codec FLL input is 14.75 MHz from MCLK */
 104         snd_soc_dai_set_pll(codec_dai, 0, 0, 14750000, wm8350_audio[i].sysclk);
 105
 106         /* TODO: The SSI driver should figure this out for us */
 107         switch (channels) {
 108         case 2:
 109                 snd_soc_dai_set_tdm_slot(cpu_dai, 0x3, 0x3, 2, 0);
 110                 break;
 111         case 1:
 112                 snd_soc_dai_set_tdm_slot(cpu_dai, 0x1, 0x1, 1, 0);
 113                 break;
 114         default:
 115                 return -EINVAL;
 116         }
 117
 118         /* set MCLK as the codec system clock for DAC and ADC */
 119         snd_soc_dai_set_sysclk(codec_dai, WM8350_MCLK_SEL_PLL_MCLK,
 120                                wm8350_audio[i].sysclk, SND_SOC_CLOCK_IN);
 121
 122         /* set codec BCLK division for sample rate */
 123         snd_soc_dai_set_clkdiv(codec_dai, WM8350_BCLK_CLKDIV,
 124                                wm8350_audio[i].bclkdiv);
 125
 126         /* DAI is synchronous and clocked with DAC LRCLK & ADC LRC */
 127         snd_soc_dai_set_clkdiv(codec_dai,
 128                                WM8350_DACLR_CLKDIV, wm8350_audio[i].lr_rate);
 129         snd_soc_dai_set_clkdiv(codec_dai,
 130                                WM8350_ADCLR_CLKDIV, wm8350_audio[i].lr_rate);
 131
 132         /* now configure DAC and ADC clocks */
 133         snd_soc_dai_set_clkdiv(codec_dai,
 134                                WM8350_DAC_CLKDIV, wm8350_audio[i].clkdiv);
 135
 136         snd_soc_dai_set_clkdiv(codec_dai,
 137                                WM8350_ADC_CLKDIV, wm8350_audio[i].clkdiv);
 138
 139         return 0;
 140 }
 141
 142 static struct snd_soc_ops wm1133_ev1_ops = {
 143         .hw_params = wm1133_ev1_hw_params,
 144 };
 145
 146 static const struct snd_soc_dapm_widget wm1133_ev1_widgets[] = {
 147 #ifdef USE_SIMIC
 148         SND_SOC_DAPM_MIC("SiMIC", NULL),
 149 #endif
 150         SND_SOC_DAPM_MIC("Mic1 Jack", NULL),
 151         SND_SOC_DAPM_MIC("Mic2 Jack", NULL),
 152         SND_SOC_DAPM_LINE("Line In Jack", NULL),
 153         SND_SOC_DAPM_LINE("Line Out Jack", NULL),
 154         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 155 };
 156
 157 /* imx32ads soc_card audio map */
 158 static const struct snd_soc_dapm_route wm1133_ev1_map[] = {
 159
 160 #ifdef USE_SIMIC
 161         /* SiMIC --> IN1LN (with automatic bias) via SP1 */
 162         { "IN1LN", NULL, "Mic Bias" },
 163         { "Mic Bias", NULL, "SiMIC" },
 164 #endif
 165
 166         /* Mic 1 Jack --> IN1LN and IN1LP (with automatic bias) */
 167         { "IN1LN", NULL, "Mic Bias" },
 168         { "IN1LP", NULL, "Mic1 Jack" },
 169         { "Mic Bias", NULL, "Mic1 Jack" },
 170
 171         /* Mic 2 Jack --> IN1RN and IN1RP (with automatic bias) */
 172         { "IN1RN", NULL, "Mic Bias" },
 173         { "IN1RP", NULL, "Mic2 Jack" },
 174         { "Mic Bias", NULL, "Mic2 Jack" },
 175
 176         /* Line in Jack --> AUX (L+R) */
 177         { "IN3R", NULL, "Line In Jack" },
 178         { "IN3L", NULL, "Line In Jack" },
 179
 180         /* Out1 --> Headphone Jack */
 181         { "Headphone Jack", NULL, "OUT1R" },
 182         { "Headphone Jack", NULL, "OUT1L" },
 183
 184         /* Out1 --> Line Out Jack */
 185         { "Line Out Jack", NULL, "OUT2R" },
 186         { "Line Out Jack", NULL, "OUT2L" },
 187 };
 188
 189 static struct snd_soc_jack hp_jack;
 190
 191 static struct snd_soc_jack_pin hp_jack_pins[] = {
 192         { .pin = "Headphone Jack", .mask = SND_JACK_HEADPHONE },
 193 };
 194
 195 static struct snd_soc_jack mic_jack;
 196
 197 static struct snd_soc_jack_pin mic_jack_pins[] = {
 198         { .pin = "Mic1 Jack", .mask = SND_JACK_MICROPHONE },
 199         { .pin = "Mic2 Jack", .mask = SND_JACK_MICROPHONE },
 200 };
 201
 202 static int wm1133_ev1_init(struct snd_soc_pcm_runtime *rtd)
 203 {
 204         struct snd_soc_codec *codec = rtd->codec;
 205         struct snd_soc_dapm_context *dapm = &codec->dapm;
 206
 207         /* Headphone jack detection */
 208         snd_soc_card_jack_new(rtd->card, "Headphone", SND_JACK_HEADPHONE,
 209                               &hp_jack, hp_jack_pins, ARRAY_SIZE(hp_jack_pins));
 210         wm8350_hp_jack_detect(codec, WM8350_JDR, &hp_jack, SND_JACK_HEADPHONE);
 211
 212         /* Microphone jack detection */
 213         snd_soc_card_jack_new(rtd->card, "Microphone",
 214                               SND_JACK_MICROPHONE | SND_JACK_BTN_0, &mic_jack,
 215                               mic_jack_pins, ARRAY_SIZE(mic_jack_pins));
 216         wm8350_mic_jack_detect(codec, &mic_jack, SND_JACK_MICROPHONE,
 217                                SND_JACK_BTN_0);
 218
 219         snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
 220
 221         return 0;
 222 }
 223
 224
 225 static struct snd_soc_dai_link wm1133_ev1_dai = {
 226         .name = "WM1133-EV1",
 227         .stream_name = "Audio",
 228         .cpu_dai_name = "imx-ssi.0",
 229         .codec_dai_name = "wm8350-hifi",
 230         .platform_name = "imx-ssi.0",
 231         .codec_name = "wm8350-codec.0-0x1a",
 232         .init = wm1133_ev1_init,
 233         .ops = &wm1133_ev1_ops,
 234         .symmetric_rates = 1,
 235         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 236                    SND_SOC_DAIFMT_CBM_CFM,
 237 };
 238
 239 static struct snd_soc_card wm1133_ev1 = {
 240         .name = "WM1133-EV1",
 241         .owner = THIS_MODULE,
 242         .dai_link = &wm1133_ev1_dai,
 243         .num_links = 1,
 244
 245         .dapm_widgets = wm1133_ev1_widgets,
 246         .num_dapm_widgets = ARRAY_SIZE(wm1133_ev1_widgets),
 247         .dapm_routes = wm1133_ev1_map,
 248         .num_dapm_routes = ARRAY_SIZE(wm1133_ev1_map),
 249 };
 250
 251 static struct platform_device *wm1133_ev1_snd_device;
 252
 253 static int __init wm1133_ev1_audio_init(void)
 254 {
 255         int ret;
 256         unsigned int ptcr, pdcr;
 257
 258         /* SSI0 mastered by port 5 */
 259         ptcr = IMX_AUDMUX_V2_PTCR_SYN |
 260                 IMX_AUDMUX_V2_PTCR_TFSDIR |
 261                 IMX_AUDMUX_V2_PTCR_TFSEL(MX31_AUDMUX_PORT5_SSI_PINS_5) |
 262                 IMX_AUDMUX_V2_PTCR_TCLKDIR |
 263                 IMX_AUDMUX_V2_PTCR_TCSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
 264         pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
 265         imx_audmux_v2_configure_port(MX31_AUDMUX_PORT1_SSI0, ptcr, pdcr);
 266
 267         ptcr = IMX_AUDMUX_V2_PTCR_SYN;
 268         pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT1_SSI0);
 269         imx_audmux_v2_configure_port(MX31_AUDMUX_PORT5_SSI_PINS_5, ptcr, pdcr);
 270
 271         wm1133_ev1_snd_device = platform_device_alloc("soc-audio", -1);
 272         if (!wm1133_ev1_snd_device)
 273                 return -ENOMEM;
 274
 275         platform_set_drvdata(wm1133_ev1_snd_device, &wm1133_ev1);
 276         ret = platform_device_add(wm1133_ev1_snd_device);
 277
 278         if (ret)
 279                 platform_device_put(wm1133_ev1_snd_device);
 280
 281         return ret;
 282 }
 283 module_init(wm1133_ev1_audio_init);
 284
 285 static void __exit wm1133_ev1_audio_exit(void)
 286 {
 287         platform_device_unregister(wm1133_ev1_snd_device);
 288 }
 289 module_exit(wm1133_ev1_audio_exit);
 290
 291 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 292 MODULE_DESCRIPTION("Audio for WM1133-EV1 on i.MX31ADS");
 293 MODULE_LICENSE("GPL");