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 34struct _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) */ 45static 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 81static 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 153static struct snd_soc_ops wm1133_ev1_ops = { 154 .hw_params = wm1133_ev1_hw_params, 155}; 156 157static 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 */ 169static 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 200static struct snd_soc_jack hp_jack; 201 202static struct snd_soc_jack_pin hp_jack_pins[] = { 203 { .pin = "Headphone Jack", .mask = SND_JACK_HEADPHONE }, 204}; 205 206static struct snd_soc_jack mic_jack; 207 208static 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 213static 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 243static 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 253static 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 260static struct snd_soc_device wm1133_ev1_snd_devdata = { 261 .card = &wm1133_ev1, 262 .codec_dev = &soc_codec_dev_wm8350, 263}; 264 265static struct platform_device *wm1133_ev1_snd_device; 266 267static 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} 298module_init(wm1133_ev1_audio_init); 299 300static void __exit wm1133_ev1_audio_exit(void) 301{ 302 platform_device_unregister(wm1133_ev1_snd_device); 303} 304module_exit(wm1133_ev1_audio_exit); 305 306MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); 307MODULE_DESCRIPTION("Audio for WM1133-EV1 on i.MX31ADS"); 308MODULE_LICENSE("GPL"); 309