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 33struct _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) */ 44static 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 80static 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 142static struct snd_soc_ops wm1133_ev1_ops = { 143 .hw_params = wm1133_ev1_hw_params, 144}; 145 146static 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 */ 158static 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 189static struct snd_soc_jack hp_jack; 190 191static struct snd_soc_jack_pin hp_jack_pins[] = { 192 { .pin = "Headphone Jack", .mask = SND_JACK_HEADPHONE }, 193}; 194 195static struct snd_soc_jack mic_jack; 196 197static 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 202static int wm1133_ev1_init(struct snd_soc_pcm_runtime *rtd) 203{ 204 struct snd_soc_codec *codec = rtd->codec; 205 206 /* Headphone jack detection */ 207 snd_soc_card_jack_new(rtd->card, "Headphone", SND_JACK_HEADPHONE, 208 &hp_jack, hp_jack_pins, ARRAY_SIZE(hp_jack_pins)); 209 wm8350_hp_jack_detect(codec, WM8350_JDR, &hp_jack, SND_JACK_HEADPHONE); 210 211 /* Microphone jack detection */ 212 snd_soc_card_jack_new(rtd->card, "Microphone", 213 SND_JACK_MICROPHONE | SND_JACK_BTN_0, &mic_jack, 214 mic_jack_pins, ARRAY_SIZE(mic_jack_pins)); 215 wm8350_mic_jack_detect(codec, &mic_jack, SND_JACK_MICROPHONE, 216 SND_JACK_BTN_0); 217 218 snd_soc_dapm_force_enable_pin(&rtd->card->dapm, "Mic Bias"); 219 220 return 0; 221} 222 223 224static struct snd_soc_dai_link wm1133_ev1_dai = { 225 .name = "WM1133-EV1", 226 .stream_name = "Audio", 227 .cpu_dai_name = "imx-ssi.0", 228 .codec_dai_name = "wm8350-hifi", 229 .platform_name = "imx-ssi.0", 230 .codec_name = "wm8350-codec.0-0x1a", 231 .init = wm1133_ev1_init, 232 .ops = &wm1133_ev1_ops, 233 .symmetric_rates = 1, 234 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 235 SND_SOC_DAIFMT_CBM_CFM, 236}; 237 238static struct snd_soc_card wm1133_ev1 = { 239 .name = "WM1133-EV1", 240 .owner = THIS_MODULE, 241 .dai_link = &wm1133_ev1_dai, 242 .num_links = 1, 243 244 .dapm_widgets = wm1133_ev1_widgets, 245 .num_dapm_widgets = ARRAY_SIZE(wm1133_ev1_widgets), 246 .dapm_routes = wm1133_ev1_map, 247 .num_dapm_routes = ARRAY_SIZE(wm1133_ev1_map), 248}; 249 250static struct platform_device *wm1133_ev1_snd_device; 251 252static int __init wm1133_ev1_audio_init(void) 253{ 254 int ret; 255 unsigned int ptcr, pdcr; 256 257 /* SSI0 mastered by port 5 */ 258 ptcr = IMX_AUDMUX_V2_PTCR_SYN | 259 IMX_AUDMUX_V2_PTCR_TFSDIR | 260 IMX_AUDMUX_V2_PTCR_TFSEL(MX31_AUDMUX_PORT5_SSI_PINS_5) | 261 IMX_AUDMUX_V2_PTCR_TCLKDIR | 262 IMX_AUDMUX_V2_PTCR_TCSEL(MX31_AUDMUX_PORT5_SSI_PINS_5); 263 pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT5_SSI_PINS_5); 264 imx_audmux_v2_configure_port(MX31_AUDMUX_PORT1_SSI0, ptcr, pdcr); 265 266 ptcr = IMX_AUDMUX_V2_PTCR_SYN; 267 pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT1_SSI0); 268 imx_audmux_v2_configure_port(MX31_AUDMUX_PORT5_SSI_PINS_5, ptcr, pdcr); 269 270 wm1133_ev1_snd_device = platform_device_alloc("soc-audio", -1); 271 if (!wm1133_ev1_snd_device) 272 return -ENOMEM; 273 274 platform_set_drvdata(wm1133_ev1_snd_device, &wm1133_ev1); 275 ret = platform_device_add(wm1133_ev1_snd_device); 276 277 if (ret) 278 platform_device_put(wm1133_ev1_snd_device); 279 280 return ret; 281} 282module_init(wm1133_ev1_audio_init); 283 284static void __exit wm1133_ev1_audio_exit(void) 285{ 286 platform_device_unregister(wm1133_ev1_snd_device); 287} 288module_exit(wm1133_ev1_audio_exit); 289 290MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); 291MODULE_DESCRIPTION("Audio for WM1133-EV1 on i.MX31ADS"); 292MODULE_LICENSE("GPL"); 293