sound/soc/fsl/wm1133-ev1.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 //
   3 //  wm1133-ev1.c - Audio for WM1133-EV1 on i.MX31ADS
   4 //
   5 //  Copyright (c) 2010 Wolfson Microelectronics plc
   6 //  Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
   7 //
   8 //  Based on an earlier driver for the same hardware by Liam Girdwood.
   9
  10 #include <linux/platform_device.h>
  11 #include <linux/clk.h>
  12 #include <linux/module.h>
  13 #include <sound/core.h>
  14 #include <sound/jack.h>
  15 #include <sound/pcm.h>
  16 #include <sound/pcm_params.h>
  17 #include <sound/soc.h>
  18
  19 #include "imx-ssi.h"
  20 #include "../codecs/wm8350.h"
  21 #include "imx-audmux.h"
  22
  23 /* There is a silicon mic on the board optionally connected via a solder pad
  24  * SP1.  Define this to enable it.
  25  */
  26 #undef USE_SIMIC
  27
  28 struct _wm8350_audio {
  29         unsigned int channels;
  30         snd_pcm_format_t format;
  31         unsigned int rate;
  32         unsigned int sysclk;
  33         unsigned int bclkdiv;
  34         unsigned int clkdiv;
  35         unsigned int lr_rate;
  36 };
  37
  38 /* in order of power consumption per rate (lowest first) */
  39 static const struct _wm8350_audio wm8350_audio[] = {
  40         /* 16bit mono modes */
  41         {1, SNDRV_PCM_FORMAT_S16_LE, 8000, 12288000 >> 1,
  42          WM8350_BCLK_DIV_48, WM8350_DACDIV_3, 16,},
  43
  44         /* 16 bit stereo modes */
  45         {2, SNDRV_PCM_FORMAT_S16_LE, 8000, 12288000,
  46          WM8350_BCLK_DIV_48, WM8350_DACDIV_6, 32,},
  47         {2, SNDRV_PCM_FORMAT_S16_LE, 16000, 12288000,
  48          WM8350_BCLK_DIV_24, WM8350_DACDIV_3, 32,},
  49         {2, SNDRV_PCM_FORMAT_S16_LE, 32000, 12288000,
  50          WM8350_BCLK_DIV_12, WM8350_DACDIV_1_5, 32,},
  51         {2, SNDRV_PCM_FORMAT_S16_LE, 48000, 12288000,
  52          WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
  53         {2, SNDRV_PCM_FORMAT_S16_LE, 96000, 24576000,
  54          WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
  55         {2, SNDRV_PCM_FORMAT_S16_LE, 11025, 11289600,
  56          WM8350_BCLK_DIV_32, WM8350_DACDIV_4, 32,},
  57         {2, SNDRV_PCM_FORMAT_S16_LE, 22050, 11289600,
  58          WM8350_BCLK_DIV_16, WM8350_DACDIV_2, 32,},
  59         {2, SNDRV_PCM_FORMAT_S16_LE, 44100, 11289600,
  60          WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
  61         {2, SNDRV_PCM_FORMAT_S16_LE, 88200, 22579200,
  62          WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
  63
  64         /* 24bit stereo modes */
  65         {2, SNDRV_PCM_FORMAT_S24_LE, 48000, 12288000,
  66          WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
  67         {2, SNDRV_PCM_FORMAT_S24_LE, 96000, 24576000,
  68          WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
  69         {2, SNDRV_PCM_FORMAT_S24_LE, 44100, 11289600,
  70          WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
  71         {2, SNDRV_PCM_FORMAT_S24_LE, 88200, 22579200,
  72          WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
  73 };
  74
  75 static int wm1133_ev1_hw_params(struct snd_pcm_substream *substream,
  76                                 struct snd_pcm_hw_params *params)
  77 {
  78         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  79         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  80         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  81         int i, found = 0;
  82         snd_pcm_format_t format = params_format(params);
  83         unsigned int rate = params_rate(params);
  84         unsigned int channels = params_channels(params);
  85
  86         /* find the correct audio parameters */
  87         for (i = 0; i < ARRAY_SIZE(wm8350_audio); i++) {
  88                 if (rate == wm8350_audio[i].rate &&
  89                     format == wm8350_audio[i].format &&
  90                     channels == wm8350_audio[i].channels) {
  91                         found = 1;
  92                         break;
  93                 }
  94         }
  95         if (!found)
  96                 return -EINVAL;
  97
  98         /* codec FLL input is 14.75 MHz from MCLK */
  99         snd_soc_dai_set_pll(codec_dai, 0, 0, 14750000, wm8350_audio[i].sysclk);
 100
 101         /* TODO: The SSI driver should figure this out for us */
 102         switch (channels) {
 103         case 2:
 104                 snd_soc_dai_set_tdm_slot(cpu_dai, 0x3, 0x3, 2, 0);
 105                 break;
 106         case 1:
 107                 snd_soc_dai_set_tdm_slot(cpu_dai, 0x1, 0x1, 1, 0);
 108                 break;
 109         default:
 110                 return -EINVAL;
 111         }
 112
 113         /* set MCLK as the codec system clock for DAC and ADC */
 114         snd_soc_dai_set_sysclk(codec_dai, WM8350_MCLK_SEL_PLL_MCLK,
 115                                wm8350_audio[i].sysclk, SND_SOC_CLOCK_IN);
 116
 117         /* set codec BCLK division for sample rate */
 118         snd_soc_dai_set_clkdiv(codec_dai, WM8350_BCLK_CLKDIV,
 119                                wm8350_audio[i].bclkdiv);
 120
 121         /* DAI is synchronous and clocked with DAC LRCLK & ADC LRC */
 122         snd_soc_dai_set_clkdiv(codec_dai,
 123                                WM8350_DACLR_CLKDIV, wm8350_audio[i].lr_rate);
 124         snd_soc_dai_set_clkdiv(codec_dai,
 125                                WM8350_ADCLR_CLKDIV, wm8350_audio[i].lr_rate);
 126
 127         /* now configure DAC and ADC clocks */
 128         snd_soc_dai_set_clkdiv(codec_dai,
 129                                WM8350_DAC_CLKDIV, wm8350_audio[i].clkdiv);
 130
 131         snd_soc_dai_set_clkdiv(codec_dai,
 132                                WM8350_ADC_CLKDIV, wm8350_audio[i].clkdiv);
 133
 134         return 0;
 135 }
 136
 137 static const struct snd_soc_ops wm1133_ev1_ops = {
 138         .hw_params = wm1133_ev1_hw_params,
 139 };
 140
 141 static const struct snd_soc_dapm_widget wm1133_ev1_widgets[] = {
 142 #ifdef USE_SIMIC
 143         SND_SOC_DAPM_MIC("SiMIC", NULL),
 144 #endif
 145         SND_SOC_DAPM_MIC("Mic1 Jack", NULL),
 146         SND_SOC_DAPM_MIC("Mic2 Jack", NULL),
 147         SND_SOC_DAPM_LINE("Line In Jack", NULL),
 148         SND_SOC_DAPM_LINE("Line Out Jack", NULL),
 149         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 150 };
 151
 152 /* imx32ads soc_card audio map */
 153 static const struct snd_soc_dapm_route wm1133_ev1_map[] = {
 154
 155 #ifdef USE_SIMIC
 156         /* SiMIC --> IN1LN (with automatic bias) via SP1 */
 157         { "IN1LN", NULL, "Mic Bias" },
 158         { "Mic Bias", NULL, "SiMIC" },
 159 #endif
 160
 161         /* Mic 1 Jack --> IN1LN and IN1LP (with automatic bias) */
 162         { "IN1LN", NULL, "Mic Bias" },
 163         { "IN1LP", NULL, "Mic1 Jack" },
 164         { "Mic Bias", NULL, "Mic1 Jack" },
 165
 166         /* Mic 2 Jack --> IN1RN and IN1RP (with automatic bias) */
 167         { "IN1RN", NULL, "Mic Bias" },
 168         { "IN1RP", NULL, "Mic2 Jack" },
 169         { "Mic Bias", NULL, "Mic2 Jack" },
 170
 171         /* Line in Jack --> AUX (L+R) */
 172         { "IN3R", NULL, "Line In Jack" },
 173         { "IN3L", NULL, "Line In Jack" },
 174
 175         /* Out1 --> Headphone Jack */
 176         { "Headphone Jack", NULL, "OUT1R" },
 177         { "Headphone Jack", NULL, "OUT1L" },
 178
 179         /* Out1 --> Line Out Jack */
 180         { "Line Out Jack", NULL, "OUT2R" },
 181         { "Line Out Jack", NULL, "OUT2L" },
 182 };
 183
 184 static struct snd_soc_jack hp_jack;
 185
 186 static struct snd_soc_jack_pin hp_jack_pins[] = {
 187         { .pin = "Headphone Jack", .mask = SND_JACK_HEADPHONE },
 188 };
 189
 190 static struct snd_soc_jack mic_jack;
 191
 192 static struct snd_soc_jack_pin mic_jack_pins[] = {
 193         { .pin = "Mic1 Jack", .mask = SND_JACK_MICROPHONE },
 194         { .pin = "Mic2 Jack", .mask = SND_JACK_MICROPHONE },
 195 };
 196
 197 static int wm1133_ev1_init(struct snd_soc_pcm_runtime *rtd)
 198 {
 199         struct snd_soc_component *component = rtd->codec_dai->component;
 200
 201         /* Headphone jack detection */
 202         snd_soc_card_jack_new(rtd->card, "Headphone", SND_JACK_HEADPHONE,
 203                               &hp_jack, hp_jack_pins, ARRAY_SIZE(hp_jack_pins));
 204         wm8350_hp_jack_detect(component, WM8350_JDR, &hp_jack, SND_JACK_HEADPHONE);
 205
 206         /* Microphone jack detection */
 207         snd_soc_card_jack_new(rtd->card, "Microphone",
 208                               SND_JACK_MICROPHONE | SND_JACK_BTN_0, &mic_jack,
 209                               mic_jack_pins, ARRAY_SIZE(mic_jack_pins));
 210         wm8350_mic_jack_detect(component, &mic_jack, SND_JACK_MICROPHONE,
 211                                SND_JACK_BTN_0);
 212
 213         snd_soc_dapm_force_enable_pin(&rtd->card->dapm, "Mic Bias");
 214
 215         return 0;
 216 }
 217
 218
 219 SND_SOC_DAILINK_DEFS(ev1,
 220         DAILINK_COMP_ARRAY(COMP_CPU("imx-ssi.0")),
 221         DAILINK_COMP_ARRAY(COMP_CODEC("wm8350-codec.0-0x1a", "wm8350-hifi")),
 222         DAILINK_COMP_ARRAY(COMP_PLATFORM("imx-ssi.0")));
 223
 224 static struct snd_soc_dai_link wm1133_ev1_dai = {
 225         .name = "WM1133-EV1",
 226         .stream_name = "Audio",
 227         .init = wm1133_ev1_init,
 228         .ops = &wm1133_ev1_ops,
 229         .symmetric_rates = 1,
 230         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 231                    SND_SOC_DAIFMT_CBM_CFM,
 232         SND_SOC_DAILINK_REG(ev1),
 233 };
 234
 235 static struct snd_soc_card wm1133_ev1 = {
 236         .name = "WM1133-EV1",
 237         .owner = THIS_MODULE,
 238         .dai_link = &wm1133_ev1_dai,
 239         .num_links = 1,
 240
 241         .dapm_widgets = wm1133_ev1_widgets,
 242         .num_dapm_widgets = ARRAY_SIZE(wm1133_ev1_widgets),
 243         .dapm_routes = wm1133_ev1_map,
 244         .num_dapm_routes = ARRAY_SIZE(wm1133_ev1_map),
 245 };
 246
 247 static struct platform_device *wm1133_ev1_snd_device;
 248
 249 static int __init wm1133_ev1_audio_init(void)
 250 {
 251         int ret;
 252         unsigned int ptcr, pdcr;
 253
 254         /* SSI0 mastered by port 5 */
 255         ptcr = IMX_AUDMUX_V2_PTCR_SYN |
 256                 IMX_AUDMUX_V2_PTCR_TFSDIR |
 257                 IMX_AUDMUX_V2_PTCR_TFSEL(MX31_AUDMUX_PORT5_SSI_PINS_5) |
 258                 IMX_AUDMUX_V2_PTCR_TCLKDIR |
 259                 IMX_AUDMUX_V2_PTCR_TCSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
 260         pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
 261         imx_audmux_v2_configure_port(MX31_AUDMUX_PORT1_SSI0, ptcr, pdcr);
 262
 263         ptcr = IMX_AUDMUX_V2_PTCR_SYN;
 264         pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT1_SSI0);
 265         imx_audmux_v2_configure_port(MX31_AUDMUX_PORT5_SSI_PINS_5, ptcr, pdcr);
 266
 267         wm1133_ev1_snd_device = platform_device_alloc("soc-audio", -1);
 268         if (!wm1133_ev1_snd_device)
 269                 return -ENOMEM;
 270
 271         platform_set_drvdata(wm1133_ev1_snd_device, &wm1133_ev1);
 272         ret = platform_device_add(wm1133_ev1_snd_device);
 273
 274         if (ret)
 275                 platform_device_put(wm1133_ev1_snd_device);
 276
 277         return ret;
 278 }
 279 module_init(wm1133_ev1_audio_init);
 280
 281 static void __exit wm1133_ev1_audio_exit(void)
 282 {
 283         platform_device_unregister(wm1133_ev1_snd_device);
 284 }
 285 module_exit(wm1133_ev1_audio_exit);
 286
 287 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 288 MODULE_DESCRIPTION("Audio for WM1133-EV1 on i.MX31ADS");
 289 MODULE_LICENSE("GPL");