1*2a9ae13aSMark Brown /* 2*2a9ae13aSMark Brown * wm8737.c -- WM8737 ALSA SoC Audio driver 3*2a9ae13aSMark Brown * 4*2a9ae13aSMark Brown * Copyright 2010 Wolfson Microelectronics plc 5*2a9ae13aSMark Brown * 6*2a9ae13aSMark Brown * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> 7*2a9ae13aSMark Brown * 8*2a9ae13aSMark Brown * This program is free software; you can redistribute it and/or modify 9*2a9ae13aSMark Brown * it under the terms of the GNU General Public License version 2 as 10*2a9ae13aSMark Brown * published by the Free Software Foundation. 11*2a9ae13aSMark Brown */ 12*2a9ae13aSMark Brown 13*2a9ae13aSMark Brown #include <linux/module.h> 14*2a9ae13aSMark Brown #include <linux/moduleparam.h> 15*2a9ae13aSMark Brown #include <linux/init.h> 16*2a9ae13aSMark Brown #include <linux/delay.h> 17*2a9ae13aSMark Brown #include <linux/pm.h> 18*2a9ae13aSMark Brown #include <linux/i2c.h> 19*2a9ae13aSMark Brown #include <linux/platform_device.h> 20*2a9ae13aSMark Brown #include <linux/regulator/consumer.h> 21*2a9ae13aSMark Brown #include <linux/spi/spi.h> 22*2a9ae13aSMark Brown #include <linux/slab.h> 23*2a9ae13aSMark Brown #include <sound/core.h> 24*2a9ae13aSMark Brown #include <sound/pcm.h> 25*2a9ae13aSMark Brown #include <sound/pcm_params.h> 26*2a9ae13aSMark Brown #include <sound/soc.h> 27*2a9ae13aSMark Brown #include <sound/soc-dapm.h> 28*2a9ae13aSMark Brown #include <sound/initval.h> 29*2a9ae13aSMark Brown #include <sound/tlv.h> 30*2a9ae13aSMark Brown 31*2a9ae13aSMark Brown #include "wm8737.h" 32*2a9ae13aSMark Brown 33*2a9ae13aSMark Brown #define WM8737_NUM_SUPPLIES 4 34*2a9ae13aSMark Brown static const char *wm8737_supply_names[WM8737_NUM_SUPPLIES] = { 35*2a9ae13aSMark Brown "DCVDD", 36*2a9ae13aSMark Brown "DBVDD", 37*2a9ae13aSMark Brown "AVDD", 38*2a9ae13aSMark Brown "MVDD", 39*2a9ae13aSMark Brown }; 40*2a9ae13aSMark Brown 41*2a9ae13aSMark Brown /* codec private data */ 42*2a9ae13aSMark Brown struct wm8737_priv { 43*2a9ae13aSMark Brown enum snd_soc_control_type control_type; 44*2a9ae13aSMark Brown struct regulator_bulk_data supplies[WM8737_NUM_SUPPLIES]; 45*2a9ae13aSMark Brown unsigned int mclk; 46*2a9ae13aSMark Brown }; 47*2a9ae13aSMark Brown 48*2a9ae13aSMark Brown static const u16 wm8737_reg[WM8737_REGISTER_COUNT] = { 49*2a9ae13aSMark Brown 0x00C3, /* R0 - Left PGA volume */ 50*2a9ae13aSMark Brown 0x00C3, /* R1 - Right PGA volume */ 51*2a9ae13aSMark Brown 0x0007, /* R2 - AUDIO path L */ 52*2a9ae13aSMark Brown 0x0007, /* R3 - AUDIO path R */ 53*2a9ae13aSMark Brown 0x0000, /* R4 - 3D Enhance */ 54*2a9ae13aSMark Brown 0x0000, /* R5 - ADC Control */ 55*2a9ae13aSMark Brown 0x0000, /* R6 - Power Management */ 56*2a9ae13aSMark Brown 0x000A, /* R7 - Audio Format */ 57*2a9ae13aSMark Brown 0x0000, /* R8 - Clocking */ 58*2a9ae13aSMark Brown 0x000F, /* R9 - MIC Preamp Control */ 59*2a9ae13aSMark Brown 0x0003, /* R10 - Misc Bias Control */ 60*2a9ae13aSMark Brown 0x0000, /* R11 - Noise Gate */ 61*2a9ae13aSMark Brown 0x007C, /* R12 - ALC1 */ 62*2a9ae13aSMark Brown 0x0000, /* R13 - ALC2 */ 63*2a9ae13aSMark Brown 0x0032, /* R14 - ALC3 */ 64*2a9ae13aSMark Brown }; 65*2a9ae13aSMark Brown 66*2a9ae13aSMark Brown static int wm8737_reset(struct snd_soc_codec *codec) 67*2a9ae13aSMark Brown { 68*2a9ae13aSMark Brown return snd_soc_write(codec, WM8737_RESET, 0); 69*2a9ae13aSMark Brown } 70*2a9ae13aSMark Brown 71*2a9ae13aSMark Brown static const unsigned int micboost_tlv[] = { 72*2a9ae13aSMark Brown TLV_DB_RANGE_HEAD(4), 73*2a9ae13aSMark Brown 0, 0, TLV_DB_SCALE_ITEM(1300, 0, 0), 74*2a9ae13aSMark Brown 1, 1, TLV_DB_SCALE_ITEM(1800, 0, 0), 75*2a9ae13aSMark Brown 2, 2, TLV_DB_SCALE_ITEM(2800, 0, 0), 76*2a9ae13aSMark Brown 3, 3, TLV_DB_SCALE_ITEM(3300, 0, 0), 77*2a9ae13aSMark Brown }; 78*2a9ae13aSMark Brown static const DECLARE_TLV_DB_SCALE(pga_tlv, -9750, 50, 1); 79*2a9ae13aSMark Brown static const DECLARE_TLV_DB_SCALE(adc_tlv, -600, 600, 0); 80*2a9ae13aSMark Brown static const DECLARE_TLV_DB_SCALE(ng_tlv, -7800, 600, 0); 81*2a9ae13aSMark Brown 82*2a9ae13aSMark Brown static const char *micbias_enum_text[] = { 83*2a9ae13aSMark Brown "25%", 84*2a9ae13aSMark Brown "50%", 85*2a9ae13aSMark Brown "75%", 86*2a9ae13aSMark Brown "100%", 87*2a9ae13aSMark Brown }; 88*2a9ae13aSMark Brown 89*2a9ae13aSMark Brown static const struct soc_enum micbias_enum = 90*2a9ae13aSMark Brown SOC_ENUM_SINGLE(WM8737_MIC_PREAMP_CONTROL, 0, 4, micbias_enum_text); 91*2a9ae13aSMark Brown 92*2a9ae13aSMark Brown static const char *low_cutoff_text[] = { 93*2a9ae13aSMark Brown "Low", "High" 94*2a9ae13aSMark Brown }; 95*2a9ae13aSMark Brown 96*2a9ae13aSMark Brown static const struct soc_enum low_3d = 97*2a9ae13aSMark Brown SOC_ENUM_SINGLE(WM8737_3D_ENHANCE, 6, 2, low_cutoff_text); 98*2a9ae13aSMark Brown 99*2a9ae13aSMark Brown static const char *high_cutoff_text[] = { 100*2a9ae13aSMark Brown "High", "Low" 101*2a9ae13aSMark Brown }; 102*2a9ae13aSMark Brown 103*2a9ae13aSMark Brown static const struct soc_enum high_3d = 104*2a9ae13aSMark Brown SOC_ENUM_SINGLE(WM8737_3D_ENHANCE, 5, 2, high_cutoff_text); 105*2a9ae13aSMark Brown 106*2a9ae13aSMark Brown static const struct snd_kcontrol_new wm8737_snd_controls[] = { 107*2a9ae13aSMark Brown SOC_DOUBLE_R_TLV("Mic Boost Volume", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R, 108*2a9ae13aSMark Brown 6, 3, 0, micboost_tlv), 109*2a9ae13aSMark Brown SOC_DOUBLE_R("Mic Boost Switch", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R, 110*2a9ae13aSMark Brown 4, 1, 0), 111*2a9ae13aSMark Brown SOC_DOUBLE("Mic ZC Switch", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R, 112*2a9ae13aSMark Brown 3, 1, 0), 113*2a9ae13aSMark Brown 114*2a9ae13aSMark Brown SOC_DOUBLE_R_TLV("Capture Volume", WM8737_LEFT_PGA_VOLUME, 115*2a9ae13aSMark Brown WM8737_RIGHT_PGA_VOLUME, 0, 255, 0, pga_tlv), 116*2a9ae13aSMark Brown SOC_DOUBLE("Capture ZC Switch", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R, 117*2a9ae13aSMark Brown 2, 1, 0), 118*2a9ae13aSMark Brown 119*2a9ae13aSMark Brown SOC_DOUBLE("INPUT1 DC Bias Switch", WM8737_MISC_BIAS_CONTROL, 0, 1, 1, 0), 120*2a9ae13aSMark Brown 121*2a9ae13aSMark Brown SOC_ENUM("Mic PGA Bias", micbias_enum), 122*2a9ae13aSMark Brown SOC_SINGLE("ADC Low Power Switch", WM8737_ADC_CONTROL, 2, 1, 0), 123*2a9ae13aSMark Brown SOC_SINGLE("High Pass Filter Switch", WM8737_ADC_CONTROL, 0, 1, 1), 124*2a9ae13aSMark Brown SOC_DOUBLE("Polarity Invert Switch", WM8737_ADC_CONTROL, 5, 6, 1, 0), 125*2a9ae13aSMark Brown 126*2a9ae13aSMark Brown SOC_SINGLE("3D Switch", WM8737_3D_ENHANCE, 0, 1, 0), 127*2a9ae13aSMark Brown SOC_SINGLE("3D Depth", WM8737_3D_ENHANCE, 1, 15, 0), 128*2a9ae13aSMark Brown SOC_ENUM("3D Low Cut-off", low_3d), 129*2a9ae13aSMark Brown SOC_ENUM("3D High Cut-off", low_3d), 130*2a9ae13aSMark Brown SOC_SINGLE_TLV("3D ADC Volume", WM8737_3D_ENHANCE, 7, 1, 1, adc_tlv), 131*2a9ae13aSMark Brown 132*2a9ae13aSMark Brown SOC_SINGLE("Noise Gate Switch", WM8737_NOISE_GATE, 0, 1, 0), 133*2a9ae13aSMark Brown SOC_SINGLE_TLV("Noise Gate Threshold Volume", WM8737_NOISE_GATE, 2, 7, 0, 134*2a9ae13aSMark Brown ng_tlv), 135*2a9ae13aSMark Brown }; 136*2a9ae13aSMark Brown 137*2a9ae13aSMark Brown static const char *linsel_text[] = { 138*2a9ae13aSMark Brown "LINPUT1", "LINPUT2", "LINPUT3", "LINPUT1 DC", 139*2a9ae13aSMark Brown }; 140*2a9ae13aSMark Brown 141*2a9ae13aSMark Brown static const struct soc_enum linsel_enum = 142*2a9ae13aSMark Brown SOC_ENUM_SINGLE(WM8737_AUDIO_PATH_L, 7, 4, linsel_text); 143*2a9ae13aSMark Brown 144*2a9ae13aSMark Brown static const struct snd_kcontrol_new linsel_mux = 145*2a9ae13aSMark Brown SOC_DAPM_ENUM("LINSEL", linsel_enum); 146*2a9ae13aSMark Brown 147*2a9ae13aSMark Brown 148*2a9ae13aSMark Brown static const char *rinsel_text[] = { 149*2a9ae13aSMark Brown "RINPUT1", "RINPUT2", "RINPUT3", "RINPUT1 DC", 150*2a9ae13aSMark Brown }; 151*2a9ae13aSMark Brown 152*2a9ae13aSMark Brown static const struct soc_enum rinsel_enum = 153*2a9ae13aSMark Brown SOC_ENUM_SINGLE(WM8737_AUDIO_PATH_R, 7, 4, rinsel_text); 154*2a9ae13aSMark Brown 155*2a9ae13aSMark Brown static const struct snd_kcontrol_new rinsel_mux = 156*2a9ae13aSMark Brown SOC_DAPM_ENUM("RINSEL", rinsel_enum); 157*2a9ae13aSMark Brown 158*2a9ae13aSMark Brown static const char *bypass_text[] = { 159*2a9ae13aSMark Brown "Direct", "Preamp" 160*2a9ae13aSMark Brown }; 161*2a9ae13aSMark Brown 162*2a9ae13aSMark Brown static const struct soc_enum lbypass_enum = 163*2a9ae13aSMark Brown SOC_ENUM_SINGLE(WM8737_MIC_PREAMP_CONTROL, 2, 2, bypass_text); 164*2a9ae13aSMark Brown 165*2a9ae13aSMark Brown static const struct snd_kcontrol_new lbypass_mux = 166*2a9ae13aSMark Brown SOC_DAPM_ENUM("Left Bypass", lbypass_enum); 167*2a9ae13aSMark Brown 168*2a9ae13aSMark Brown 169*2a9ae13aSMark Brown static const struct soc_enum rbypass_enum = 170*2a9ae13aSMark Brown SOC_ENUM_SINGLE(WM8737_MIC_PREAMP_CONTROL, 3, 2, bypass_text); 171*2a9ae13aSMark Brown 172*2a9ae13aSMark Brown static const struct snd_kcontrol_new rbypass_mux = 173*2a9ae13aSMark Brown SOC_DAPM_ENUM("Left Bypass", rbypass_enum); 174*2a9ae13aSMark Brown 175*2a9ae13aSMark Brown static const struct snd_soc_dapm_widget wm8737_dapm_widgets[] = { 176*2a9ae13aSMark Brown SND_SOC_DAPM_INPUT("LINPUT1"), 177*2a9ae13aSMark Brown SND_SOC_DAPM_INPUT("LINPUT2"), 178*2a9ae13aSMark Brown SND_SOC_DAPM_INPUT("LINPUT3"), 179*2a9ae13aSMark Brown SND_SOC_DAPM_INPUT("RINPUT1"), 180*2a9ae13aSMark Brown SND_SOC_DAPM_INPUT("RINPUT2"), 181*2a9ae13aSMark Brown SND_SOC_DAPM_INPUT("RINPUT3"), 182*2a9ae13aSMark Brown SND_SOC_DAPM_INPUT("LACIN"), 183*2a9ae13aSMark Brown SND_SOC_DAPM_INPUT("RACIN"), 184*2a9ae13aSMark Brown 185*2a9ae13aSMark Brown SND_SOC_DAPM_MUX("LINSEL", SND_SOC_NOPM, 0, 0, &linsel_mux), 186*2a9ae13aSMark Brown SND_SOC_DAPM_MUX("RINSEL", SND_SOC_NOPM, 0, 0, &rinsel_mux), 187*2a9ae13aSMark Brown 188*2a9ae13aSMark Brown SND_SOC_DAPM_MUX("Left Preamp Mux", SND_SOC_NOPM, 0, 0, &lbypass_mux), 189*2a9ae13aSMark Brown SND_SOC_DAPM_MUX("Right Preamp Mux", SND_SOC_NOPM, 0, 0, &rbypass_mux), 190*2a9ae13aSMark Brown 191*2a9ae13aSMark Brown SND_SOC_DAPM_PGA("PGAL", WM8737_POWER_MANAGEMENT, 5, 0, NULL, 0), 192*2a9ae13aSMark Brown SND_SOC_DAPM_PGA("PGAR", WM8737_POWER_MANAGEMENT, 4, 0, NULL, 0), 193*2a9ae13aSMark Brown 194*2a9ae13aSMark Brown SND_SOC_DAPM_DAC("ADCL", NULL, WM8737_POWER_MANAGEMENT, 3, 0), 195*2a9ae13aSMark Brown SND_SOC_DAPM_DAC("ADCR", NULL, WM8737_POWER_MANAGEMENT, 2, 0), 196*2a9ae13aSMark Brown 197*2a9ae13aSMark Brown SND_SOC_DAPM_AIF_OUT("AIF", "Capture", 0, WM8737_POWER_MANAGEMENT, 6, 0), 198*2a9ae13aSMark Brown }; 199*2a9ae13aSMark Brown 200*2a9ae13aSMark Brown static const struct snd_soc_dapm_route intercon[] = { 201*2a9ae13aSMark Brown { "LINSEL", "LINPUT1", "LINPUT1" }, 202*2a9ae13aSMark Brown { "LINSEL", "LINPUT2", "LINPUT2" }, 203*2a9ae13aSMark Brown { "LINSEL", "LINPUT3", "LINPUT3" }, 204*2a9ae13aSMark Brown { "LINSEL", "LINPUT1 DC", "LINPUT1" }, 205*2a9ae13aSMark Brown 206*2a9ae13aSMark Brown { "RINSEL", "RINPUT1", "RINPUT1" }, 207*2a9ae13aSMark Brown { "RINSEL", "RINPUT2", "RINPUT2" }, 208*2a9ae13aSMark Brown { "RINSEL", "RINPUT3", "RINPUT3" }, 209*2a9ae13aSMark Brown { "RINSEL", "RINPUT1 DC", "RINPUT1" }, 210*2a9ae13aSMark Brown 211*2a9ae13aSMark Brown { "Left Preamp Mux", "Preamp", "LINSEL" }, 212*2a9ae13aSMark Brown { "Left Preamp Mux", "Direct", "LACIN" }, 213*2a9ae13aSMark Brown 214*2a9ae13aSMark Brown { "Right Preamp Mux", "Preamp", "RINSEL" }, 215*2a9ae13aSMark Brown { "Right Preamp Mux", "Direct", "RACIN" }, 216*2a9ae13aSMark Brown 217*2a9ae13aSMark Brown { "PGAL", NULL, "Left Preamp Mux" }, 218*2a9ae13aSMark Brown { "PGAR", NULL, "Right Preamp Mux" }, 219*2a9ae13aSMark Brown 220*2a9ae13aSMark Brown { "ADCL", NULL, "PGAL" }, 221*2a9ae13aSMark Brown { "ADCR", NULL, "PGAR" }, 222*2a9ae13aSMark Brown 223*2a9ae13aSMark Brown { "AIF", NULL, "ADCL" }, 224*2a9ae13aSMark Brown { "AIF", NULL, "ADCR" }, 225*2a9ae13aSMark Brown }; 226*2a9ae13aSMark Brown 227*2a9ae13aSMark Brown static int wm8737_add_widgets(struct snd_soc_codec *codec) 228*2a9ae13aSMark Brown { 229*2a9ae13aSMark Brown struct snd_soc_dapm_context *dapm = &codec->dapm; 230*2a9ae13aSMark Brown 231*2a9ae13aSMark Brown snd_soc_dapm_new_controls(dapm, wm8737_dapm_widgets, 232*2a9ae13aSMark Brown ARRAY_SIZE(wm8737_dapm_widgets)); 233*2a9ae13aSMark Brown snd_soc_dapm_add_routes(dapm, intercon, ARRAY_SIZE(intercon)); 234*2a9ae13aSMark Brown 235*2a9ae13aSMark Brown return 0; 236*2a9ae13aSMark Brown } 237*2a9ae13aSMark Brown 238*2a9ae13aSMark Brown /* codec mclk clock divider coefficients */ 239*2a9ae13aSMark Brown static const struct { 240*2a9ae13aSMark Brown u32 mclk; 241*2a9ae13aSMark Brown u32 rate; 242*2a9ae13aSMark Brown u8 usb; 243*2a9ae13aSMark Brown u8 sr; 244*2a9ae13aSMark Brown } coeff_div[] = { 245*2a9ae13aSMark Brown { 12288000, 8000, 0, 0x4 }, 246*2a9ae13aSMark Brown { 12288000, 12000, 0, 0x8 }, 247*2a9ae13aSMark Brown { 12288000, 16000, 0, 0xa }, 248*2a9ae13aSMark Brown { 12288000, 24000, 0, 0x1c }, 249*2a9ae13aSMark Brown { 12288000, 32000, 0, 0xc }, 250*2a9ae13aSMark Brown { 12288000, 48000, 0, 0 }, 251*2a9ae13aSMark Brown { 12288000, 96000, 0, 0xe }, 252*2a9ae13aSMark Brown 253*2a9ae13aSMark Brown { 11289600, 8000, 0, 0x14 }, 254*2a9ae13aSMark Brown { 11289600, 11025, 0, 0x18 }, 255*2a9ae13aSMark Brown { 11289600, 22050, 0, 0x1a }, 256*2a9ae13aSMark Brown { 11289600, 44100, 0, 0x10 }, 257*2a9ae13aSMark Brown { 11289600, 88200, 0, 0x1e }, 258*2a9ae13aSMark Brown 259*2a9ae13aSMark Brown { 18432000, 8000, 0, 0x5 }, 260*2a9ae13aSMark Brown { 18432000, 12000, 0, 0x9 }, 261*2a9ae13aSMark Brown { 18432000, 16000, 0, 0xb }, 262*2a9ae13aSMark Brown { 18432000, 24000, 0, 0x1b }, 263*2a9ae13aSMark Brown { 18432000, 32000, 0, 0xd }, 264*2a9ae13aSMark Brown { 18432000, 48000, 0, 0x1 }, 265*2a9ae13aSMark Brown { 18432000, 96000, 0, 0x1f }, 266*2a9ae13aSMark Brown 267*2a9ae13aSMark Brown { 16934400, 8000, 0, 0x15 }, 268*2a9ae13aSMark Brown { 16934400, 11025, 0, 0x19 }, 269*2a9ae13aSMark Brown { 16934400, 22050, 0, 0x1b }, 270*2a9ae13aSMark Brown { 16934400, 44100, 0, 0x11 }, 271*2a9ae13aSMark Brown { 16934400, 88200, 0, 0x1f }, 272*2a9ae13aSMark Brown 273*2a9ae13aSMark Brown { 12000000, 8000, 1, 0x4 }, 274*2a9ae13aSMark Brown { 12000000, 11025, 1, 0x19 }, 275*2a9ae13aSMark Brown { 12000000, 12000, 1, 0x8 }, 276*2a9ae13aSMark Brown { 12000000, 16000, 1, 0xa }, 277*2a9ae13aSMark Brown { 12000000, 22050, 1, 0x1b }, 278*2a9ae13aSMark Brown { 12000000, 24000, 1, 0x1c }, 279*2a9ae13aSMark Brown { 12000000, 32000, 1, 0xc }, 280*2a9ae13aSMark Brown { 12000000, 44100, 1, 0x11 }, 281*2a9ae13aSMark Brown { 12000000, 48000, 1, 0x0 }, 282*2a9ae13aSMark Brown { 12000000, 88200, 1, 0x1f }, 283*2a9ae13aSMark Brown { 12000000, 96000, 1, 0xe }, 284*2a9ae13aSMark Brown }; 285*2a9ae13aSMark Brown 286*2a9ae13aSMark Brown static int wm8737_hw_params(struct snd_pcm_substream *substream, 287*2a9ae13aSMark Brown struct snd_pcm_hw_params *params, 288*2a9ae13aSMark Brown struct snd_soc_dai *dai) 289*2a9ae13aSMark Brown { 290*2a9ae13aSMark Brown struct snd_soc_pcm_runtime *rtd = substream->private_data; 291*2a9ae13aSMark Brown struct snd_soc_codec *codec = rtd->codec; 292*2a9ae13aSMark Brown struct wm8737_priv *wm8737 = snd_soc_codec_get_drvdata(codec); 293*2a9ae13aSMark Brown int i; 294*2a9ae13aSMark Brown u16 clocking = 0; 295*2a9ae13aSMark Brown u16 af = 0; 296*2a9ae13aSMark Brown 297*2a9ae13aSMark Brown for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { 298*2a9ae13aSMark Brown if (coeff_div[i].rate != params_rate(params)) 299*2a9ae13aSMark Brown continue; 300*2a9ae13aSMark Brown 301*2a9ae13aSMark Brown if (coeff_div[i].mclk == wm8737->mclk) 302*2a9ae13aSMark Brown break; 303*2a9ae13aSMark Brown 304*2a9ae13aSMark Brown if (coeff_div[i].mclk == wm8737->mclk * 2) { 305*2a9ae13aSMark Brown clocking |= WM8737_CLKDIV2; 306*2a9ae13aSMark Brown break; 307*2a9ae13aSMark Brown } 308*2a9ae13aSMark Brown } 309*2a9ae13aSMark Brown 310*2a9ae13aSMark Brown if (i == ARRAY_SIZE(coeff_div)) { 311*2a9ae13aSMark Brown dev_err(codec->dev, "%dHz MCLK can't support %dHz\n", 312*2a9ae13aSMark Brown wm8737->mclk, params_rate(params)); 313*2a9ae13aSMark Brown return -EINVAL; 314*2a9ae13aSMark Brown } 315*2a9ae13aSMark Brown 316*2a9ae13aSMark Brown clocking |= coeff_div[i].usb | (coeff_div[i].sr << WM8737_SR_SHIFT); 317*2a9ae13aSMark Brown 318*2a9ae13aSMark Brown switch (params_format(params)) { 319*2a9ae13aSMark Brown case SNDRV_PCM_FORMAT_S16_LE: 320*2a9ae13aSMark Brown break; 321*2a9ae13aSMark Brown case SNDRV_PCM_FORMAT_S20_3LE: 322*2a9ae13aSMark Brown af |= 0x8; 323*2a9ae13aSMark Brown break; 324*2a9ae13aSMark Brown case SNDRV_PCM_FORMAT_S24_LE: 325*2a9ae13aSMark Brown af |= 0x10; 326*2a9ae13aSMark Brown break; 327*2a9ae13aSMark Brown case SNDRV_PCM_FORMAT_S32_LE: 328*2a9ae13aSMark Brown af |= 0x18; 329*2a9ae13aSMark Brown break; 330*2a9ae13aSMark Brown default: 331*2a9ae13aSMark Brown return -EINVAL; 332*2a9ae13aSMark Brown } 333*2a9ae13aSMark Brown 334*2a9ae13aSMark Brown snd_soc_update_bits(codec, WM8737_AUDIO_FORMAT, WM8737_WL_MASK, af); 335*2a9ae13aSMark Brown snd_soc_update_bits(codec, WM8737_CLOCKING, 336*2a9ae13aSMark Brown WM8737_USB_MODE | WM8737_CLKDIV2 | WM8737_SR_MASK, 337*2a9ae13aSMark Brown clocking); 338*2a9ae13aSMark Brown 339*2a9ae13aSMark Brown return 0; 340*2a9ae13aSMark Brown } 341*2a9ae13aSMark Brown 342*2a9ae13aSMark Brown static int wm8737_set_dai_sysclk(struct snd_soc_dai *codec_dai, 343*2a9ae13aSMark Brown int clk_id, unsigned int freq, int dir) 344*2a9ae13aSMark Brown { 345*2a9ae13aSMark Brown struct snd_soc_codec *codec = codec_dai->codec; 346*2a9ae13aSMark Brown struct wm8737_priv *wm8737 = snd_soc_codec_get_drvdata(codec); 347*2a9ae13aSMark Brown int i; 348*2a9ae13aSMark Brown 349*2a9ae13aSMark Brown for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { 350*2a9ae13aSMark Brown if (freq == coeff_div[i].mclk || 351*2a9ae13aSMark Brown freq == coeff_div[i].mclk * 2) { 352*2a9ae13aSMark Brown wm8737->mclk = freq; 353*2a9ae13aSMark Brown return 0; 354*2a9ae13aSMark Brown } 355*2a9ae13aSMark Brown } 356*2a9ae13aSMark Brown 357*2a9ae13aSMark Brown dev_err(codec->dev, "MCLK rate %dHz not supported\n", freq); 358*2a9ae13aSMark Brown 359*2a9ae13aSMark Brown return -EINVAL; 360*2a9ae13aSMark Brown } 361*2a9ae13aSMark Brown 362*2a9ae13aSMark Brown 363*2a9ae13aSMark Brown static int wm8737_set_dai_fmt(struct snd_soc_dai *codec_dai, 364*2a9ae13aSMark Brown unsigned int fmt) 365*2a9ae13aSMark Brown { 366*2a9ae13aSMark Brown struct snd_soc_codec *codec = codec_dai->codec; 367*2a9ae13aSMark Brown u16 af = 0; 368*2a9ae13aSMark Brown 369*2a9ae13aSMark Brown switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 370*2a9ae13aSMark Brown case SND_SOC_DAIFMT_CBM_CFM: 371*2a9ae13aSMark Brown af |= WM8737_MS; 372*2a9ae13aSMark Brown break; 373*2a9ae13aSMark Brown case SND_SOC_DAIFMT_CBS_CFS: 374*2a9ae13aSMark Brown break; 375*2a9ae13aSMark Brown default: 376*2a9ae13aSMark Brown return -EINVAL; 377*2a9ae13aSMark Brown } 378*2a9ae13aSMark Brown 379*2a9ae13aSMark Brown switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 380*2a9ae13aSMark Brown case SND_SOC_DAIFMT_I2S: 381*2a9ae13aSMark Brown af |= 0x2; 382*2a9ae13aSMark Brown break; 383*2a9ae13aSMark Brown case SND_SOC_DAIFMT_RIGHT_J: 384*2a9ae13aSMark Brown break; 385*2a9ae13aSMark Brown case SND_SOC_DAIFMT_LEFT_J: 386*2a9ae13aSMark Brown af |= 0x1; 387*2a9ae13aSMark Brown break; 388*2a9ae13aSMark Brown case SND_SOC_DAIFMT_DSP_A: 389*2a9ae13aSMark Brown af |= 0x3; 390*2a9ae13aSMark Brown break; 391*2a9ae13aSMark Brown case SND_SOC_DAIFMT_DSP_B: 392*2a9ae13aSMark Brown af |= 0x13; 393*2a9ae13aSMark Brown break; 394*2a9ae13aSMark Brown default: 395*2a9ae13aSMark Brown return -EINVAL; 396*2a9ae13aSMark Brown } 397*2a9ae13aSMark Brown 398*2a9ae13aSMark Brown switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 399*2a9ae13aSMark Brown case SND_SOC_DAIFMT_NB_NF: 400*2a9ae13aSMark Brown break; 401*2a9ae13aSMark Brown case SND_SOC_DAIFMT_NB_IF: 402*2a9ae13aSMark Brown af |= WM8737_LRP; 403*2a9ae13aSMark Brown break; 404*2a9ae13aSMark Brown default: 405*2a9ae13aSMark Brown return -EINVAL; 406*2a9ae13aSMark Brown } 407*2a9ae13aSMark Brown 408*2a9ae13aSMark Brown snd_soc_update_bits(codec, WM8737_AUDIO_FORMAT, 409*2a9ae13aSMark Brown WM8737_FORMAT_MASK | WM8737_LRP | WM8737_MS, af); 410*2a9ae13aSMark Brown 411*2a9ae13aSMark Brown return 0; 412*2a9ae13aSMark Brown } 413*2a9ae13aSMark Brown 414*2a9ae13aSMark Brown static int wm8737_set_bias_level(struct snd_soc_codec *codec, 415*2a9ae13aSMark Brown enum snd_soc_bias_level level) 416*2a9ae13aSMark Brown { 417*2a9ae13aSMark Brown struct wm8737_priv *wm8737 = snd_soc_codec_get_drvdata(codec); 418*2a9ae13aSMark Brown int ret; 419*2a9ae13aSMark Brown 420*2a9ae13aSMark Brown switch (level) { 421*2a9ae13aSMark Brown case SND_SOC_BIAS_ON: 422*2a9ae13aSMark Brown break; 423*2a9ae13aSMark Brown 424*2a9ae13aSMark Brown case SND_SOC_BIAS_PREPARE: 425*2a9ae13aSMark Brown /* VMID at 2*75k */ 426*2a9ae13aSMark Brown snd_soc_update_bits(codec, WM8737_MISC_BIAS_CONTROL, 427*2a9ae13aSMark Brown WM8737_VMIDSEL_MASK, 0); 428*2a9ae13aSMark Brown break; 429*2a9ae13aSMark Brown 430*2a9ae13aSMark Brown case SND_SOC_BIAS_STANDBY: 431*2a9ae13aSMark Brown if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { 432*2a9ae13aSMark Brown ret = regulator_bulk_enable(ARRAY_SIZE(wm8737->supplies), 433*2a9ae13aSMark Brown wm8737->supplies); 434*2a9ae13aSMark Brown if (ret != 0) { 435*2a9ae13aSMark Brown dev_err(codec->dev, 436*2a9ae13aSMark Brown "Failed to enable supplies: %d\n", 437*2a9ae13aSMark Brown ret); 438*2a9ae13aSMark Brown return ret; 439*2a9ae13aSMark Brown } 440*2a9ae13aSMark Brown 441*2a9ae13aSMark Brown snd_soc_cache_sync(codec); 442*2a9ae13aSMark Brown 443*2a9ae13aSMark Brown /* Fast VMID ramp at 2*2.5k */ 444*2a9ae13aSMark Brown snd_soc_update_bits(codec, WM8737_MISC_BIAS_CONTROL, 445*2a9ae13aSMark Brown WM8737_VMIDSEL_MASK, 0x4); 446*2a9ae13aSMark Brown 447*2a9ae13aSMark Brown /* Bring VMID up */ 448*2a9ae13aSMark Brown snd_soc_update_bits(codec, WM8737_POWER_MANAGEMENT, 449*2a9ae13aSMark Brown WM8737_VMID_MASK | 450*2a9ae13aSMark Brown WM8737_VREF_MASK, 451*2a9ae13aSMark Brown WM8737_VMID_MASK | 452*2a9ae13aSMark Brown WM8737_VREF_MASK); 453*2a9ae13aSMark Brown 454*2a9ae13aSMark Brown msleep(500); 455*2a9ae13aSMark Brown } 456*2a9ae13aSMark Brown 457*2a9ae13aSMark Brown /* VMID at 2*300k */ 458*2a9ae13aSMark Brown snd_soc_update_bits(codec, WM8737_MISC_BIAS_CONTROL, 459*2a9ae13aSMark Brown WM8737_VMIDSEL_MASK, 2); 460*2a9ae13aSMark Brown 461*2a9ae13aSMark Brown break; 462*2a9ae13aSMark Brown 463*2a9ae13aSMark Brown case SND_SOC_BIAS_OFF: 464*2a9ae13aSMark Brown snd_soc_update_bits(codec, WM8737_POWER_MANAGEMENT, 465*2a9ae13aSMark Brown WM8737_VMID_MASK | WM8737_VREF_MASK, 0); 466*2a9ae13aSMark Brown 467*2a9ae13aSMark Brown regulator_bulk_disable(ARRAY_SIZE(wm8737->supplies), 468*2a9ae13aSMark Brown wm8737->supplies); 469*2a9ae13aSMark Brown break; 470*2a9ae13aSMark Brown } 471*2a9ae13aSMark Brown 472*2a9ae13aSMark Brown codec->dapm.bias_level = level; 473*2a9ae13aSMark Brown return 0; 474*2a9ae13aSMark Brown } 475*2a9ae13aSMark Brown 476*2a9ae13aSMark Brown #define WM8737_RATES SNDRV_PCM_RATE_8000_96000 477*2a9ae13aSMark Brown 478*2a9ae13aSMark Brown #define WM8737_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 479*2a9ae13aSMark Brown SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 480*2a9ae13aSMark Brown 481*2a9ae13aSMark Brown static struct snd_soc_dai_ops wm8737_dai_ops = { 482*2a9ae13aSMark Brown .hw_params = wm8737_hw_params, 483*2a9ae13aSMark Brown .set_sysclk = wm8737_set_dai_sysclk, 484*2a9ae13aSMark Brown .set_fmt = wm8737_set_dai_fmt, 485*2a9ae13aSMark Brown }; 486*2a9ae13aSMark Brown 487*2a9ae13aSMark Brown static struct snd_soc_dai_driver wm8737_dai = { 488*2a9ae13aSMark Brown .name = "wm8737", 489*2a9ae13aSMark Brown .capture = { 490*2a9ae13aSMark Brown .stream_name = "Capture", 491*2a9ae13aSMark Brown .channels_min = 2, /* Mono modes not yet supported */ 492*2a9ae13aSMark Brown .channels_max = 2, 493*2a9ae13aSMark Brown .rates = WM8737_RATES, 494*2a9ae13aSMark Brown .formats = WM8737_FORMATS, 495*2a9ae13aSMark Brown }, 496*2a9ae13aSMark Brown .ops = &wm8737_dai_ops, 497*2a9ae13aSMark Brown }; 498*2a9ae13aSMark Brown 499*2a9ae13aSMark Brown #ifdef CONFIG_PM 500*2a9ae13aSMark Brown static int wm8737_suspend(struct snd_soc_codec *codec, pm_message_t state) 501*2a9ae13aSMark Brown { 502*2a9ae13aSMark Brown wm8737_set_bias_level(codec, SND_SOC_BIAS_OFF); 503*2a9ae13aSMark Brown return 0; 504*2a9ae13aSMark Brown } 505*2a9ae13aSMark Brown 506*2a9ae13aSMark Brown static int wm8737_resume(struct snd_soc_codec *codec) 507*2a9ae13aSMark Brown { 508*2a9ae13aSMark Brown wm8737_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 509*2a9ae13aSMark Brown return 0; 510*2a9ae13aSMark Brown } 511*2a9ae13aSMark Brown #else 512*2a9ae13aSMark Brown #define wm8737_suspend NULL 513*2a9ae13aSMark Brown #define wm8737_resume NULL 514*2a9ae13aSMark Brown #endif 515*2a9ae13aSMark Brown 516*2a9ae13aSMark Brown static int wm8737_probe(struct snd_soc_codec *codec) 517*2a9ae13aSMark Brown { 518*2a9ae13aSMark Brown struct wm8737_priv *wm8737 = snd_soc_codec_get_drvdata(codec); 519*2a9ae13aSMark Brown int ret, i; 520*2a9ae13aSMark Brown 521*2a9ae13aSMark Brown codec->hw_write = (hw_write_t)i2c_master_send; 522*2a9ae13aSMark Brown ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8737->control_type); 523*2a9ae13aSMark Brown if (ret != 0) { 524*2a9ae13aSMark Brown dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); 525*2a9ae13aSMark Brown return ret; 526*2a9ae13aSMark Brown } 527*2a9ae13aSMark Brown 528*2a9ae13aSMark Brown for (i = 0; i < ARRAY_SIZE(wm8737->supplies); i++) 529*2a9ae13aSMark Brown wm8737->supplies[i].supply = wm8737_supply_names[i]; 530*2a9ae13aSMark Brown 531*2a9ae13aSMark Brown ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8737->supplies), 532*2a9ae13aSMark Brown wm8737->supplies); 533*2a9ae13aSMark Brown if (ret != 0) { 534*2a9ae13aSMark Brown dev_err(codec->dev, "Failed to request supplies: %d\n", ret); 535*2a9ae13aSMark Brown return ret; 536*2a9ae13aSMark Brown } 537*2a9ae13aSMark Brown 538*2a9ae13aSMark Brown ret = regulator_bulk_enable(ARRAY_SIZE(wm8737->supplies), 539*2a9ae13aSMark Brown wm8737->supplies); 540*2a9ae13aSMark Brown if (ret != 0) { 541*2a9ae13aSMark Brown dev_err(codec->dev, "Failed to enable supplies: %d\n", ret); 542*2a9ae13aSMark Brown goto err_get; 543*2a9ae13aSMark Brown } 544*2a9ae13aSMark Brown 545*2a9ae13aSMark Brown ret = wm8737_reset(codec); 546*2a9ae13aSMark Brown if (ret < 0) { 547*2a9ae13aSMark Brown dev_err(codec->dev, "Failed to issue reset\n"); 548*2a9ae13aSMark Brown goto err_enable; 549*2a9ae13aSMark Brown } 550*2a9ae13aSMark Brown 551*2a9ae13aSMark Brown snd_soc_update_bits(codec, WM8737_LEFT_PGA_VOLUME, WM8737_LVU, 552*2a9ae13aSMark Brown WM8737_LVU); 553*2a9ae13aSMark Brown snd_soc_update_bits(codec, WM8737_RIGHT_PGA_VOLUME, WM8737_RVU, 554*2a9ae13aSMark Brown WM8737_RVU); 555*2a9ae13aSMark Brown 556*2a9ae13aSMark Brown wm8737_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 557*2a9ae13aSMark Brown 558*2a9ae13aSMark Brown /* Bias level configuration will have done an extra enable */ 559*2a9ae13aSMark Brown regulator_bulk_disable(ARRAY_SIZE(wm8737->supplies), wm8737->supplies); 560*2a9ae13aSMark Brown 561*2a9ae13aSMark Brown snd_soc_add_controls(codec, wm8737_snd_controls, 562*2a9ae13aSMark Brown ARRAY_SIZE(wm8737_snd_controls)); 563*2a9ae13aSMark Brown wm8737_add_widgets(codec); 564*2a9ae13aSMark Brown 565*2a9ae13aSMark Brown return 0; 566*2a9ae13aSMark Brown 567*2a9ae13aSMark Brown err_enable: 568*2a9ae13aSMark Brown regulator_bulk_disable(ARRAY_SIZE(wm8737->supplies), wm8737->supplies); 569*2a9ae13aSMark Brown err_get: 570*2a9ae13aSMark Brown regulator_bulk_free(ARRAY_SIZE(wm8737->supplies), wm8737->supplies); 571*2a9ae13aSMark Brown 572*2a9ae13aSMark Brown return ret; 573*2a9ae13aSMark Brown } 574*2a9ae13aSMark Brown 575*2a9ae13aSMark Brown static int wm8737_remove(struct snd_soc_codec *codec) 576*2a9ae13aSMark Brown { 577*2a9ae13aSMark Brown struct wm8737_priv *wm8737 = snd_soc_codec_get_drvdata(codec); 578*2a9ae13aSMark Brown 579*2a9ae13aSMark Brown wm8737_set_bias_level(codec, SND_SOC_BIAS_OFF); 580*2a9ae13aSMark Brown regulator_bulk_free(ARRAY_SIZE(wm8737->supplies), wm8737->supplies); 581*2a9ae13aSMark Brown return 0; 582*2a9ae13aSMark Brown } 583*2a9ae13aSMark Brown 584*2a9ae13aSMark Brown static struct snd_soc_codec_driver soc_codec_dev_wm8737 = { 585*2a9ae13aSMark Brown .probe = wm8737_probe, 586*2a9ae13aSMark Brown .remove = wm8737_remove, 587*2a9ae13aSMark Brown .suspend = wm8737_suspend, 588*2a9ae13aSMark Brown .resume = wm8737_resume, 589*2a9ae13aSMark Brown .set_bias_level = wm8737_set_bias_level, 590*2a9ae13aSMark Brown 591*2a9ae13aSMark Brown .reg_cache_size = WM8737_REGISTER_COUNT - 1, /* Skip reset */ 592*2a9ae13aSMark Brown .reg_word_size = sizeof(u16), 593*2a9ae13aSMark Brown .reg_cache_default = wm8737_reg, 594*2a9ae13aSMark Brown }; 595*2a9ae13aSMark Brown 596*2a9ae13aSMark Brown #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 597*2a9ae13aSMark Brown static __devinit int wm8737_i2c_probe(struct i2c_client *i2c, 598*2a9ae13aSMark Brown const struct i2c_device_id *id) 599*2a9ae13aSMark Brown { 600*2a9ae13aSMark Brown struct wm8737_priv *wm8737; 601*2a9ae13aSMark Brown int ret; 602*2a9ae13aSMark Brown 603*2a9ae13aSMark Brown wm8737 = kzalloc(sizeof(struct wm8737_priv), GFP_KERNEL); 604*2a9ae13aSMark Brown if (wm8737 == NULL) 605*2a9ae13aSMark Brown return -ENOMEM; 606*2a9ae13aSMark Brown 607*2a9ae13aSMark Brown i2c_set_clientdata(i2c, wm8737); 608*2a9ae13aSMark Brown wm8737->control_type = SND_SOC_I2C; 609*2a9ae13aSMark Brown 610*2a9ae13aSMark Brown ret = snd_soc_register_codec(&i2c->dev, 611*2a9ae13aSMark Brown &soc_codec_dev_wm8737, &wm8737_dai, 1); 612*2a9ae13aSMark Brown if (ret < 0) 613*2a9ae13aSMark Brown kfree(wm8737); 614*2a9ae13aSMark Brown return ret; 615*2a9ae13aSMark Brown 616*2a9ae13aSMark Brown } 617*2a9ae13aSMark Brown 618*2a9ae13aSMark Brown static __devexit int wm8737_i2c_remove(struct i2c_client *client) 619*2a9ae13aSMark Brown { 620*2a9ae13aSMark Brown snd_soc_unregister_codec(&client->dev); 621*2a9ae13aSMark Brown kfree(i2c_get_clientdata(client)); 622*2a9ae13aSMark Brown return 0; 623*2a9ae13aSMark Brown } 624*2a9ae13aSMark Brown 625*2a9ae13aSMark Brown static const struct i2c_device_id wm8737_i2c_id[] = { 626*2a9ae13aSMark Brown { "wm8737", 0 }, 627*2a9ae13aSMark Brown { } 628*2a9ae13aSMark Brown }; 629*2a9ae13aSMark Brown MODULE_DEVICE_TABLE(i2c, wm8737_i2c_id); 630*2a9ae13aSMark Brown 631*2a9ae13aSMark Brown static struct i2c_driver wm8737_i2c_driver = { 632*2a9ae13aSMark Brown .driver = { 633*2a9ae13aSMark Brown .name = "wm8737", 634*2a9ae13aSMark Brown .owner = THIS_MODULE, 635*2a9ae13aSMark Brown }, 636*2a9ae13aSMark Brown .probe = wm8737_i2c_probe, 637*2a9ae13aSMark Brown .remove = __devexit_p(wm8737_i2c_remove), 638*2a9ae13aSMark Brown .id_table = wm8737_i2c_id, 639*2a9ae13aSMark Brown }; 640*2a9ae13aSMark Brown #endif 641*2a9ae13aSMark Brown 642*2a9ae13aSMark Brown #if defined(CONFIG_SPI_MASTER) 643*2a9ae13aSMark Brown static int __devinit wm8737_spi_probe(struct spi_device *spi) 644*2a9ae13aSMark Brown { 645*2a9ae13aSMark Brown struct wm8737_priv *wm8737; 646*2a9ae13aSMark Brown int ret; 647*2a9ae13aSMark Brown 648*2a9ae13aSMark Brown wm8737 = kzalloc(sizeof(struct wm8737_priv), GFP_KERNEL); 649*2a9ae13aSMark Brown if (wm8737 == NULL) 650*2a9ae13aSMark Brown return -ENOMEM; 651*2a9ae13aSMark Brown 652*2a9ae13aSMark Brown wm8737->control_type = SND_SOC_SPI; 653*2a9ae13aSMark Brown spi_set_drvdata(spi, wm8737); 654*2a9ae13aSMark Brown 655*2a9ae13aSMark Brown ret = snd_soc_register_codec(&spi->dev, 656*2a9ae13aSMark Brown &soc_codec_dev_wm8737, &wm8737_dai, 1); 657*2a9ae13aSMark Brown if (ret < 0) 658*2a9ae13aSMark Brown kfree(wm8737); 659*2a9ae13aSMark Brown return ret; 660*2a9ae13aSMark Brown } 661*2a9ae13aSMark Brown 662*2a9ae13aSMark Brown static int __devexit wm8737_spi_remove(struct spi_device *spi) 663*2a9ae13aSMark Brown { 664*2a9ae13aSMark Brown snd_soc_unregister_codec(&spi->dev); 665*2a9ae13aSMark Brown kfree(spi_get_drvdata(spi)); 666*2a9ae13aSMark Brown return 0; 667*2a9ae13aSMark Brown } 668*2a9ae13aSMark Brown 669*2a9ae13aSMark Brown static struct spi_driver wm8737_spi_driver = { 670*2a9ae13aSMark Brown .driver = { 671*2a9ae13aSMark Brown .name = "wm8737", 672*2a9ae13aSMark Brown .owner = THIS_MODULE, 673*2a9ae13aSMark Brown }, 674*2a9ae13aSMark Brown .probe = wm8737_spi_probe, 675*2a9ae13aSMark Brown .remove = __devexit_p(wm8737_spi_remove), 676*2a9ae13aSMark Brown }; 677*2a9ae13aSMark Brown #endif /* CONFIG_SPI_MASTER */ 678*2a9ae13aSMark Brown 679*2a9ae13aSMark Brown static int __init wm8737_modinit(void) 680*2a9ae13aSMark Brown { 681*2a9ae13aSMark Brown int ret; 682*2a9ae13aSMark Brown #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 683*2a9ae13aSMark Brown ret = i2c_add_driver(&wm8737_i2c_driver); 684*2a9ae13aSMark Brown if (ret != 0) { 685*2a9ae13aSMark Brown printk(KERN_ERR "Failed to register WM8737 I2C driver: %d\n", 686*2a9ae13aSMark Brown ret); 687*2a9ae13aSMark Brown } 688*2a9ae13aSMark Brown #endif 689*2a9ae13aSMark Brown #if defined(CONFIG_SPI_MASTER) 690*2a9ae13aSMark Brown ret = spi_register_driver(&wm8737_spi_driver); 691*2a9ae13aSMark Brown if (ret != 0) { 692*2a9ae13aSMark Brown printk(KERN_ERR "Failed to register WM8737 SPI driver: %d\n", 693*2a9ae13aSMark Brown ret); 694*2a9ae13aSMark Brown } 695*2a9ae13aSMark Brown #endif 696*2a9ae13aSMark Brown return 0; 697*2a9ae13aSMark Brown } 698*2a9ae13aSMark Brown module_init(wm8737_modinit); 699*2a9ae13aSMark Brown 700*2a9ae13aSMark Brown static void __exit wm8737_exit(void) 701*2a9ae13aSMark Brown { 702*2a9ae13aSMark Brown #if defined(CONFIG_SPI_MASTER) 703*2a9ae13aSMark Brown spi_unregister_driver(&wm8737_spi_driver); 704*2a9ae13aSMark Brown #endif 705*2a9ae13aSMark Brown #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 706*2a9ae13aSMark Brown i2c_del_driver(&wm8737_i2c_driver); 707*2a9ae13aSMark Brown #endif 708*2a9ae13aSMark Brown } 709*2a9ae13aSMark Brown module_exit(wm8737_exit); 710*2a9ae13aSMark Brown 711*2a9ae13aSMark Brown MODULE_DESCRIPTION("ASoC WM8737 driver"); 712*2a9ae13aSMark Brown MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); 713*2a9ae13aSMark Brown MODULE_LICENSE("GPL"); 714