/* * wm8993.c -- WM8993 ALSA SoC audio driver * * Copyright 2009 Wolfson Microelectronics plc * * Author: Mark Brown * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "wm8993.h" #include "wm_hubs.h" static u16 wm8993_reg_defaults[WM8993_REGISTER_COUNT] = { 0x8993, /* R0 - Software Reset */ 0x0000, /* R1 - Power Management (1) */ 0x6000, /* R2 - Power Management (2) */ 0x0000, /* R3 - Power Management (3) */ 0x4050, /* R4 - Audio Interface (1) */ 0x4000, /* R5 - Audio Interface (2) */ 0x01C8, /* R6 - Clocking 1 */ 0x0000, /* R7 - Clocking 2 */ 0x0000, /* R8 - Audio Interface (3) */ 0x0040, /* R9 - Audio Interface (4) */ 0x0004, /* R10 - DAC CTRL */ 0x00C0, /* R11 - Left DAC Digital Volume */ 0x00C0, /* R12 - Right DAC Digital Volume */ 0x0000, /* R13 - Digital Side Tone */ 0x0300, /* R14 - ADC CTRL */ 0x00C0, /* R15 - Left ADC Digital Volume */ 0x00C0, /* R16 - Right ADC Digital Volume */ 0x0000, /* R17 */ 0x0000, /* R18 - GPIO CTRL 1 */ 0x0010, /* R19 - GPIO1 */ 0x0000, /* R20 - IRQ_DEBOUNCE */ 0x0000, /* R21 */ 0x8000, /* R22 - GPIOCTRL 2 */ 0x0800, /* R23 - GPIO_POL */ 0x008B, /* R24 - Left Line Input 1&2 Volume */ 0x008B, /* R25 - Left Line Input 3&4 Volume */ 0x008B, /* R26 - Right Line Input 1&2 Volume */ 0x008B, /* R27 - Right Line Input 3&4 Volume */ 0x006D, /* R28 - Left Output Volume */ 0x006D, /* R29 - Right Output Volume */ 0x0066, /* R30 - Line Outputs Volume */ 0x0020, /* R31 - HPOUT2 Volume */ 0x0079, /* R32 - Left OPGA Volume */ 0x0079, /* R33 - Right OPGA Volume */ 0x0003, /* R34 - SPKMIXL Attenuation */ 0x0003, /* R35 - SPKMIXR Attenuation */ 0x0011, /* R36 - SPKOUT Mixers */ 0x0100, /* R37 - SPKOUT Boost */ 0x0079, /* R38 - Speaker Volume Left */ 0x0079, /* R39 - Speaker Volume Right */ 0x0000, /* R40 - Input Mixer2 */ 0x0000, /* R41 - Input Mixer3 */ 0x0000, /* R42 - Input Mixer4 */ 0x0000, /* R43 - Input Mixer5 */ 0x0000, /* R44 - Input Mixer6 */ 0x0000, /* R45 - Output Mixer1 */ 0x0000, /* R46 - Output Mixer2 */ 0x0000, /* R47 - Output Mixer3 */ 0x0000, /* R48 - Output Mixer4 */ 0x0000, /* R49 - Output Mixer5 */ 0x0000, /* R50 - Output Mixer6 */ 0x0000, /* R51 - HPOUT2 Mixer */ 0x0000, /* R52 - Line Mixer1 */ 0x0000, /* R53 - Line Mixer2 */ 0x0000, /* R54 - Speaker Mixer */ 0x0000, /* R55 - Additional Control */ 0x0000, /* R56 - AntiPOP1 */ 0x0000, /* R57 - AntiPOP2 */ 0x0000, /* R58 - MICBIAS */ 0x0000, /* R59 */ 0x0000, /* R60 - FLL Control 1 */ 0x0000, /* R61 - FLL Control 2 */ 0x0000, /* R62 - FLL Control 3 */ 0x2EE0, /* R63 - FLL Control 4 */ 0x0002, /* R64 - FLL Control 5 */ 0x2287, /* R65 - Clocking 3 */ 0x025F, /* R66 - Clocking 4 */ 0x0000, /* R67 - MW Slave Control */ 0x0000, /* R68 */ 0x0002, /* R69 - Bus Control 1 */ 0x0000, /* R70 - Write Sequencer 0 */ 0x0000, /* R71 - Write Sequencer 1 */ 0x0000, /* R72 - Write Sequencer 2 */ 0x0000, /* R73 - Write Sequencer 3 */ 0x0000, /* R74 - Write Sequencer 4 */ 0x0000, /* R75 - Write Sequencer 5 */ 0x1F25, /* R76 - Charge Pump 1 */ 0x0000, /* R77 */ 0x0000, /* R78 */ 0x0000, /* R79 */ 0x0000, /* R80 */ 0x0000, /* R81 - Class W 0 */ 0x0000, /* R82 */ 0x0000, /* R83 */ 0x0000, /* R84 - DC Servo 0 */ 0x054A, /* R85 - DC Servo 1 */ 0x0000, /* R86 */ 0x0000, /* R87 - DC Servo 3 */ 0x0000, /* R88 - DC Servo Readback 0 */ 0x0000, /* R89 - DC Servo Readback 1 */ 0x0000, /* R90 - DC Servo Readback 2 */ 0x0000, /* R91 */ 0x0000, /* R92 */ 0x0000, /* R93 */ 0x0000, /* R94 */ 0x0000, /* R95 */ 0x0100, /* R96 - Analogue HP 0 */ 0x0000, /* R97 */ 0x0000, /* R98 - EQ1 */ 0x000C, /* R99 - EQ2 */ 0x000C, /* R100 - EQ3 */ 0x000C, /* R101 - EQ4 */ 0x000C, /* R102 - EQ5 */ 0x000C, /* R103 - EQ6 */ 0x0FCA, /* R104 - EQ7 */ 0x0400, /* R105 - EQ8 */ 0x00D8, /* R106 - EQ9 */ 0x1EB5, /* R107 - EQ10 */ 0xF145, /* R108 - EQ11 */ 0x0B75, /* R109 - EQ12 */ 0x01C5, /* R110 - EQ13 */ 0x1C58, /* R111 - EQ14 */ 0xF373, /* R112 - EQ15 */ 0x0A54, /* R113 - EQ16 */ 0x0558, /* R114 - EQ17 */ 0x168E, /* R115 - EQ18 */ 0xF829, /* R116 - EQ19 */ 0x07AD, /* R117 - EQ20 */ 0x1103, /* R118 - EQ21 */ 0x0564, /* R119 - EQ22 */ 0x0559, /* R120 - EQ23 */ 0x4000, /* R121 - EQ24 */ 0x0000, /* R122 - Digital Pulls */ 0x0F08, /* R123 - DRC Control 1 */ 0x0000, /* R124 - DRC Control 2 */ 0x0080, /* R125 - DRC Control 3 */ 0x0000, /* R126 - DRC Control 4 */ }; static struct { int ratio; int clk_sys_rate; } clk_sys_rates[] = { { 64, 0 }, { 128, 1 }, { 192, 2 }, { 256, 3 }, { 384, 4 }, { 512, 5 }, { 768, 6 }, { 1024, 7 }, { 1408, 8 }, { 1536, 9 }, }; static struct { int rate; int sample_rate; } sample_rates[] = { { 8000, 0 }, { 11025, 1 }, { 12000, 1 }, { 16000, 2 }, { 22050, 3 }, { 24000, 3 }, { 32000, 4 }, { 44100, 5 }, { 48000, 5 }, }; static struct { int div; /* *10 due to .5s */ int bclk_div; } bclk_divs[] = { { 10, 0 }, { 15, 1 }, { 20, 2 }, { 30, 3 }, { 40, 4 }, { 55, 5 }, { 60, 6 }, { 80, 7 }, { 110, 8 }, { 120, 9 }, { 160, 10 }, { 220, 11 }, { 240, 12 }, { 320, 13 }, { 440, 14 }, { 480, 15 }, }; struct wm8993_priv { u16 reg_cache[WM8993_REGISTER_COUNT]; struct wm8993_platform_data pdata; struct snd_soc_codec codec; int master; int sysclk_source; int tdm_slots; int tdm_width; unsigned int mclk_rate; unsigned int sysclk_rate; unsigned int fs; unsigned int bclk; int class_w_users; unsigned int fll_fref; unsigned int fll_fout; }; static unsigned int wm8993_read_hw(struct snd_soc_codec *codec, u8 reg) { struct i2c_msg xfer[2]; u16 data; int ret; struct i2c_client *i2c = codec->control_data; /* Write register */ xfer[0].addr = i2c->addr; xfer[0].flags = 0; xfer[0].len = 1; xfer[0].buf = ® /* Read data */ xfer[1].addr = i2c->addr; xfer[1].flags = I2C_M_RD; xfer[1].len = 2; xfer[1].buf = (u8 *)&data; ret = i2c_transfer(i2c->adapter, xfer, 2); if (ret != 2) { dev_err(codec->dev, "Failed to read 0x%x: %d\n", reg, ret); return 0; } return (data >> 8) | ((data & 0xff) << 8); } static int wm8993_volatile(unsigned int reg) { switch (reg) { case WM8993_SOFTWARE_RESET: case WM8993_DC_SERVO_0: case WM8993_DC_SERVO_READBACK_0: case WM8993_DC_SERVO_READBACK_1: case WM8993_DC_SERVO_READBACK_2: return 1; default: return 0; } } static unsigned int wm8993_read(struct snd_soc_codec *codec, unsigned int reg) { u16 *reg_cache = codec->reg_cache; BUG_ON(reg > WM8993_MAX_REGISTER); if (wm8993_volatile(reg)) return wm8993_read_hw(codec, reg); else return reg_cache[reg]; } static int wm8993_write(struct snd_soc_codec *codec, unsigned int reg, unsigned int value) { u16 *reg_cache = codec->reg_cache; u8 data[3]; int ret; BUG_ON(reg > WM8993_MAX_REGISTER); /* data is * D15..D9 WM8993 register offset * D8...D0 register data */ data[0] = reg; data[1] = value >> 8; data[2] = value & 0x00ff; if (!wm8993_volatile(reg)) reg_cache[reg] = value; ret = codec->hw_write(codec->control_data, data, 3); if (ret == 3) return 0; if (ret < 0) return ret; return -EIO; } struct _fll_div { u16 fll_fratio; u16 fll_outdiv; u16 fll_clk_ref_div; u16 n; u16 k; }; /* The size in bits of the FLL divide multiplied by 10 * to allow rounding later */ #define FIXED_FLL_SIZE ((1 << 16) * 10) static struct { unsigned int min; unsigned int max; u16 fll_fratio; int ratio; } fll_fratios[] = { { 0, 64000, 4, 16 }, { 64000, 128000, 3, 8 }, { 128000, 256000, 2, 4 }, { 256000, 1000000, 1, 2 }, { 1000000, 13500000, 0, 1 }, }; static int fll_factors(struct _fll_div *fll_div, unsigned int Fref, unsigned int Fout) { u64 Kpart; unsigned int K, Ndiv, Nmod, target; unsigned int div; int i; /* Fref must be <=13.5MHz */ div = 1; fll_div->fll_clk_ref_div = 0; while ((Fref / div) > 13500000) { div *= 2; fll_div->fll_clk_ref_div++; if (div > 8) { pr_err("Can't scale %dMHz input down to <=13.5MHz\n", Fref); return -EINVAL; } } pr_debug("Fref=%u Fout=%u\n", Fref, Fout); /* Apply the division for our remaining calculations */ Fref /= div; /* Fvco should be 90-100MHz; don't check the upper bound */ div = 0; target = Fout * 2; while (target < 90000000) { div++; target *= 2; if (div > 7) { pr_err("Unable to find FLL_OUTDIV for Fout=%uHz\n", Fout); return -EINVAL; } } fll_div->fll_outdiv = div; pr_debug("Fvco=%dHz\n", target); /* Find an appropraite FLL_FRATIO and factor it out of the target */ for (i = 0; i < ARRAY_SIZE(fll_fratios); i++) { if (fll_fratios[i].min <= Fref && Fref <= fll_fratios[i].max) { fll_div->fll_fratio = fll_fratios[i].fll_fratio; target /= fll_fratios[i].ratio; break; } } if (i == ARRAY_SIZE(fll_fratios)) { pr_err("Unable to find FLL_FRATIO for Fref=%uHz\n", Fref); return -EINVAL; } /* Now, calculate N.K */ Ndiv = target / Fref; fll_div->n = Ndiv; Nmod = target % Fref; pr_debug("Nmod=%d\n", Nmod); /* Calculate fractional part - scale up so we can round. */ Kpart = FIXED_FLL_SIZE * (long long)Nmod; do_div(Kpart, Fref); K = Kpart & 0xFFFFFFFF; if ((K % 10) >= 5) K += 5; /* Move down to proper range now rounding is done */ fll_div->k = K / 10; pr_debug("N=%x K=%x FLL_FRATIO=%x FLL_OUTDIV=%x FLL_CLK_REF_DIV=%x\n", fll_div->n, fll_div->k, fll_div->fll_fratio, fll_div->fll_outdiv, fll_div->fll_clk_ref_div); return 0; } static int wm8993_set_fll(struct snd_soc_dai *dai, int fll_id, unsigned int Fref, unsigned int Fout) { struct snd_soc_codec *codec = dai->codec; struct wm8993_priv *wm8993 = codec->private_data; u16 reg1, reg4, reg5; struct _fll_div fll_div; int ret; /* Any change? */ if (Fref == wm8993->fll_fref && Fout == wm8993->fll_fout) return 0; /* Disable the FLL */ if (Fout == 0) { dev_dbg(codec->dev, "FLL disabled\n"); wm8993->fll_fref = 0; wm8993->fll_fout = 0; reg1 = wm8993_read(codec, WM8993_FLL_CONTROL_1); reg1 &= ~WM8993_FLL_ENA; wm8993_write(codec, WM8993_FLL_CONTROL_1, reg1); return 0; } ret = fll_factors(&fll_div, Fref, Fout); if (ret != 0) return ret; reg5 = wm8993_read(codec, WM8993_FLL_CONTROL_5); reg5 &= ~WM8993_FLL_CLK_SRC_MASK; switch (fll_id) { case WM8993_FLL_MCLK: break; case WM8993_FLL_LRCLK: reg5 |= 1; break; case WM8993_FLL_BCLK: reg5 |= 2; break; default: dev_err(codec->dev, "Unknown FLL ID %d\n", fll_id); return -EINVAL; } /* Any FLL configuration change requires that the FLL be * disabled first. */ reg1 = wm8993_read(codec, WM8993_FLL_CONTROL_1); reg1 &= ~WM8993_FLL_ENA; wm8993_write(codec, WM8993_FLL_CONTROL_1, reg1); /* Apply the configuration */ if (fll_div.k) reg1 |= WM8993_FLL_FRAC_MASK; else reg1 &= ~WM8993_FLL_FRAC_MASK; wm8993_write(codec, WM8993_FLL_CONTROL_1, reg1); wm8993_write(codec, WM8993_FLL_CONTROL_2, (fll_div.fll_outdiv << WM8993_FLL_OUTDIV_SHIFT) | (fll_div.fll_fratio << WM8993_FLL_FRATIO_SHIFT)); wm8993_write(codec, WM8993_FLL_CONTROL_3, fll_div.k); reg4 = wm8993_read(codec, WM8993_FLL_CONTROL_4); reg4 &= ~WM8993_FLL_N_MASK; reg4 |= fll_div.n << WM8993_FLL_N_SHIFT; wm8993_write(codec, WM8993_FLL_CONTROL_4, reg4); reg5 &= ~WM8993_FLL_CLK_REF_DIV_MASK; reg5 |= fll_div.fll_clk_ref_div << WM8993_FLL_CLK_REF_DIV_SHIFT; wm8993_write(codec, WM8993_FLL_CONTROL_5, reg5); /* Enable the FLL */ wm8993_write(codec, WM8993_FLL_CONTROL_1, reg1 | WM8993_FLL_ENA); dev_dbg(codec->dev, "FLL enabled at %dHz->%dHz\n", Fref, Fout); wm8993->fll_fref = Fref; wm8993->fll_fout = Fout; return 0; } static int configure_clock(struct snd_soc_codec *codec) { struct wm8993_priv *wm8993 = codec->private_data; unsigned int reg; /* This should be done on init() for bypass paths */ switch (wm8993->sysclk_source) { case WM8993_SYSCLK_MCLK: dev_dbg(codec->dev, "Using %dHz MCLK\n", wm8993->mclk_rate); reg = wm8993_read(codec, WM8993_CLOCKING_2); reg &= ~(WM8993_MCLK_DIV | WM8993_SYSCLK_SRC); if (wm8993->mclk_rate > 13500000) { reg |= WM8993_MCLK_DIV; wm8993->sysclk_rate = wm8993->mclk_rate / 2; } else { reg &= ~WM8993_MCLK_DIV; wm8993->sysclk_rate = wm8993->mclk_rate; } wm8993_write(codec, WM8993_CLOCKING_2, reg); break; case WM8993_SYSCLK_FLL: dev_dbg(codec->dev, "Using %dHz FLL clock\n", wm8993->fll_fout); reg = wm8993_read(codec, WM8993_CLOCKING_2); reg |= WM8993_SYSCLK_SRC; if (wm8993->fll_fout > 13500000) { reg |= WM8993_MCLK_DIV; wm8993->sysclk_rate = wm8993->fll_fout / 2; } else { reg &= ~WM8993_MCLK_DIV; wm8993->sysclk_rate = wm8993->fll_fout; } wm8993_write(codec, WM8993_CLOCKING_2, reg); break; default: dev_err(codec->dev, "System clock not configured\n"); return -EINVAL; } dev_dbg(codec->dev, "CLK_SYS is %dHz\n", wm8993->sysclk_rate); return 0; } static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -3600, 300, 0); static const DECLARE_TLV_DB_SCALE(drc_comp_threash, -4500, 75, 0); static const DECLARE_TLV_DB_SCALE(drc_comp_amp, -2250, 75, 0); static const DECLARE_TLV_DB_SCALE(drc_min_tlv, -1800, 600, 0); static const unsigned int drc_max_tlv[] = { TLV_DB_RANGE_HEAD(4), 0, 2, TLV_DB_SCALE_ITEM(1200, 600, 0), 3, 3, TLV_DB_SCALE_ITEM(3600, 0, 0), }; static const DECLARE_TLV_DB_SCALE(drc_qr_tlv, 1200, 600, 0); static const DECLARE_TLV_DB_SCALE(drc_startup_tlv, -1800, 300, 0); static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0); static const DECLARE_TLV_DB_SCALE(digital_tlv, -7200, 75, 1); static const DECLARE_TLV_DB_SCALE(dac_boost_tlv, 0, 600, 0); static const char *dac_deemph_text[] = { "None", "32kHz", "44.1kHz", "48kHz", }; static const struct soc_enum dac_deemph = SOC_ENUM_SINGLE(WM8993_DAC_CTRL, 4, 4, dac_deemph_text); static const char *adc_hpf_text[] = { "Hi-Fi", "Voice 1", "Voice 2", "Voice 3", }; static const struct soc_enum adc_hpf = SOC_ENUM_SINGLE(WM8993_ADC_CTRL, 5, 4, adc_hpf_text); static const char *drc_path_text[] = { "ADC", "DAC" }; static const struct soc_enum drc_path = SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_1, 14, 2, drc_path_text); static const char *drc_r0_text[] = { "1", "1/2", "1/4", "1/8", "1/16", "0", }; static const struct soc_enum drc_r0 = SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_3, 8, 6, drc_r0_text); static const char *drc_r1_text[] = { "1", "1/2", "1/4", "1/8", "0", }; static const struct soc_enum drc_r1 = SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_4, 13, 5, drc_r1_text); static const char *drc_attack_text[] = { "Reserved", "181us", "363us", "726us", "1.45ms", "2.9ms", "5.8ms", "11.6ms", "23.2ms", "46.4ms", "92.8ms", "185.6ms", }; static const struct soc_enum drc_attack = SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_2, 12, 12, drc_attack_text); static const char *drc_decay_text[] = { "186ms", "372ms", "743ms", "1.49s", "2.97ms", "5.94ms", "11.89ms", "23.78ms", "47.56ms", }; static const struct soc_enum drc_decay = SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_2, 8, 9, drc_decay_text); static const char *drc_ff_text[] = { "5 samples", "9 samples", }; static const struct soc_enum drc_ff = SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_3, 7, 2, drc_ff_text); static const char *drc_qr_rate_text[] = { "0.725ms", "1.45ms", "5.8ms", }; static const struct soc_enum drc_qr_rate = SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_3, 0, 3, drc_qr_rate_text); static const char *drc_smooth_text[] = { "Low", "Medium", "High", }; static const struct soc_enum drc_smooth = SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_1, 4, 3, drc_smooth_text); static const struct snd_kcontrol_new wm8993_snd_controls[] = { SOC_DOUBLE_TLV("Digital Sidetone Volume", WM8993_DIGITAL_SIDE_TONE, 5, 9, 12, 0, sidetone_tlv), SOC_SINGLE("DRC Switch", WM8993_DRC_CONTROL_1, 15, 1, 0), SOC_ENUM("DRC Path", drc_path), SOC_SINGLE_TLV("DRC Compressor Threashold Volume", WM8993_DRC_CONTROL_2, 2, 60, 1, drc_comp_threash), SOC_SINGLE_TLV("DRC Compressor Amplitude Volume", WM8993_DRC_CONTROL_3, 11, 30, 1, drc_comp_amp), SOC_ENUM("DRC R0", drc_r0), SOC_ENUM("DRC R1", drc_r1), SOC_SINGLE_TLV("DRC Minimum Volume", WM8993_DRC_CONTROL_1, 2, 3, 1, drc_min_tlv), SOC_SINGLE_TLV("DRC Maximum Volume", WM8993_DRC_CONTROL_1, 0, 3, 0, drc_max_tlv), SOC_ENUM("DRC Attack Rate", drc_attack), SOC_ENUM("DRC Decay Rate", drc_decay), SOC_ENUM("DRC FF Delay", drc_ff), SOC_SINGLE("DRC Anti-clip Switch", WM8993_DRC_CONTROL_1, 9, 1, 0), SOC_SINGLE("DRC Quick Release Switch", WM8993_DRC_CONTROL_1, 10, 1, 0), SOC_SINGLE_TLV("DRC Quick Release Volume", WM8993_DRC_CONTROL_3, 2, 3, 0, drc_qr_tlv), SOC_ENUM("DRC Quick Release Rate", drc_qr_rate), SOC_SINGLE("DRC Smoothing Switch", WM8993_DRC_CONTROL_1, 11, 1, 0), SOC_SINGLE("DRC Smoothing Hysteresis Switch", WM8993_DRC_CONTROL_1, 8, 1, 0), SOC_ENUM("DRC Smoothing Hysteresis Threashold", drc_smooth), SOC_SINGLE_TLV("DRC Startup Volume", WM8993_DRC_CONTROL_4, 8, 18, 0, drc_startup_tlv), SOC_SINGLE("EQ Switch", WM8993_EQ1, 0, 1, 0), SOC_DOUBLE_R_TLV("Capture Volume", WM8993_LEFT_ADC_DIGITAL_VOLUME, WM8993_RIGHT_ADC_DIGITAL_VOLUME, 1, 96, 0, digital_tlv), SOC_SINGLE("ADC High Pass Filter Switch", WM8993_ADC_CTRL, 8, 1, 0), SOC_ENUM("ADC High Pass Filter Mode", adc_hpf), SOC_DOUBLE_R_TLV("Playback Volume", WM8993_LEFT_DAC_DIGITAL_VOLUME, WM8993_RIGHT_DAC_DIGITAL_VOLUME, 1, 96, 0, digital_tlv), SOC_SINGLE_TLV("Playback Boost Volume", WM8993_AUDIO_INTERFACE_2, 10, 3, 0, dac_boost_tlv), SOC_ENUM("DAC Deemphasis", dac_deemph), SOC_SINGLE_TLV("SPKL DAC Volume", WM8993_SPKMIXL_ATTENUATION, 2, 1, 1, wm_hubs_spkmix_tlv), SOC_SINGLE_TLV("SPKR DAC Volume", WM8993_SPKMIXR_ATTENUATION, 2, 1, 1, wm_hubs_spkmix_tlv), }; static const struct snd_kcontrol_new wm8993_eq_controls[] = { SOC_SINGLE_TLV("EQ1 Volume", WM8993_EQ2, 0, 24, 0, eq_tlv), SOC_SINGLE_TLV("EQ2 Volume", WM8993_EQ3, 0, 24, 0, eq_tlv), SOC_SINGLE_TLV("EQ3 Volume", WM8993_EQ4, 0, 24, 0, eq_tlv), SOC_SINGLE_TLV("EQ4 Volume", WM8993_EQ5, 0, 24, 0, eq_tlv), SOC_SINGLE_TLV("EQ5 Volume", WM8993_EQ6, 0, 24, 0, eq_tlv), }; static int clk_sys_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { struct snd_soc_codec *codec = w->codec; switch (event) { case SND_SOC_DAPM_PRE_PMU: return configure_clock(codec); case SND_SOC_DAPM_POST_PMD: break; } return 0; } /* * When used with DAC outputs only the WM8993 charge pump supports * operation in class W mode, providing very low power consumption * when used with digital sources. Enable and disable this mode * automatically depending on the mixer configuration. * * Currently the only supported paths are the direct DAC->headphone * paths (which provide minimum power consumption anyway). */ static int class_w_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); struct snd_soc_codec *codec = widget->codec; struct wm8993_priv *wm8993 = codec->private_data; int ret; /* Turn it off if we're using the main output mixer */ if (ucontrol->value.integer.value[0] == 0) { if (wm8993->class_w_users == 0) { dev_dbg(codec->dev, "Disabling Class W\n"); snd_soc_update_bits(codec, WM8993_CLASS_W_0, WM8993_CP_DYN_FREQ | WM8993_CP_DYN_V, 0); } wm8993->class_w_users++; } /* Implement the change */ ret = snd_soc_dapm_put_enum_double(kcontrol, ucontrol); /* Enable it if we're using the direct DAC path */ if (ucontrol->value.integer.value[0] == 1) { if (wm8993->class_w_users == 1) { dev_dbg(codec->dev, "Enabling Class W\n"); snd_soc_update_bits(codec, WM8993_CLASS_W_0, WM8993_CP_DYN_FREQ | WM8993_CP_DYN_V, WM8993_CP_DYN_FREQ | WM8993_CP_DYN_V); } wm8993->class_w_users--; } dev_dbg(codec->dev, "Indirect DAC use count now %d\n", wm8993->class_w_users); return ret; } #define SOC_DAPM_ENUM_W(xname, xenum) \ { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ .info = snd_soc_info_enum_double, \ .get = snd_soc_dapm_get_enum_double, \ .put = class_w_put, \ .private_value = (unsigned long)&xenum } static const char *hp_mux_text[] = { "Mixer", "DAC", }; static const struct soc_enum hpl_enum = SOC_ENUM_SINGLE(WM8993_OUTPUT_MIXER1, 8, 2, hp_mux_text); static const struct snd_kcontrol_new hpl_mux = SOC_DAPM_ENUM_W("Left Headphone Mux", hpl_enum); static const struct soc_enum hpr_enum = SOC_ENUM_SINGLE(WM8993_OUTPUT_MIXER2, 8, 2, hp_mux_text); static const struct snd_kcontrol_new hpr_mux = SOC_DAPM_ENUM_W("Right Headphone Mux", hpr_enum); static const struct snd_kcontrol_new left_speaker_mixer[] = { SOC_DAPM_SINGLE("Input Switch", WM8993_SPEAKER_MIXER, 7, 1, 0), SOC_DAPM_SINGLE("IN1LP Switch", WM8993_SPEAKER_MIXER, 5, 1, 0), SOC_DAPM_SINGLE("Output Switch", WM8993_SPEAKER_MIXER, 3, 1, 0), SOC_DAPM_SINGLE("DAC Switch", WM8993_SPEAKER_MIXER, 6, 1, 0), }; static const struct snd_kcontrol_new right_speaker_mixer[] = { SOC_DAPM_SINGLE("Input Switch", WM8993_SPEAKER_MIXER, 6, 1, 0), SOC_DAPM_SINGLE("IN1RP Switch", WM8993_SPEAKER_MIXER, 4, 1, 0), SOC_DAPM_SINGLE("Output Switch", WM8993_SPEAKER_MIXER, 2, 1, 0), SOC_DAPM_SINGLE("DAC Switch", WM8993_SPEAKER_MIXER, 0, 1, 0), }; static const struct snd_soc_dapm_widget wm8993_dapm_widgets[] = { SND_SOC_DAPM_SUPPLY("CLK_SYS", WM8993_BUS_CONTROL_1, 1, 0, clk_sys_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_SUPPLY("TOCLK", WM8993_CLOCKING_1, 14, 0, NULL, 0), SND_SOC_DAPM_SUPPLY("CLK_DSP", WM8993_CLOCKING_3, 0, 0, NULL, 0), SND_SOC_DAPM_ADC("ADCL", "Capture", WM8993_POWER_MANAGEMENT_2, 1, 0), SND_SOC_DAPM_ADC("ADCR", "Capture", WM8993_POWER_MANAGEMENT_2, 0, 0), SND_SOC_DAPM_DAC("DACL", "Playback", WM8993_POWER_MANAGEMENT_3, 1, 0), SND_SOC_DAPM_DAC("DACR", "Playback", WM8993_POWER_MANAGEMENT_3, 0, 0), SND_SOC_DAPM_MUX("Left Headphone Mux", SND_SOC_NOPM, 0, 0, &hpl_mux), SND_SOC_DAPM_MUX("Right Headphone Mux", SND_SOC_NOPM, 0, 0, &hpr_mux), SND_SOC_DAPM_MIXER("SPKL", WM8993_POWER_MANAGEMENT_3, 8, 0, left_speaker_mixer, ARRAY_SIZE(left_speaker_mixer)), SND_SOC_DAPM_MIXER("SPKR", WM8993_POWER_MANAGEMENT_3, 9, 0, right_speaker_mixer, ARRAY_SIZE(right_speaker_mixer)), }; static const struct snd_soc_dapm_route routes[] = { { "ADCL", NULL, "CLK_SYS" }, { "ADCL", NULL, "CLK_DSP" }, { "ADCR", NULL, "CLK_SYS" }, { "ADCR", NULL, "CLK_DSP" }, { "DACL", NULL, "CLK_SYS" }, { "DACL", NULL, "CLK_DSP" }, { "DACR", NULL, "CLK_SYS" }, { "DACR", NULL, "CLK_DSP" }, { "Left Output Mixer", "DAC Switch", "DACL" }, { "Right Output Mixer", "DAC Switch", "DACR" }, { "Left Output PGA", NULL, "CLK_SYS" }, { "Right Output PGA", NULL, "CLK_SYS" }, { "SPKL", "DAC Switch", "DACL" }, { "SPKL", NULL, "CLK_SYS" }, { "SPKR", "DAC Switch", "DACR" }, { "SPKR", NULL, "CLK_SYS" }, { "Left Headphone Mux", "DAC", "DACL" }, { "Right Headphone Mux", "DAC", "DACR" }, }; static int wm8993_set_bias_level(struct snd_soc_codec *codec, enum snd_soc_bias_level level) { struct wm8993_priv *wm8993 = codec->private_data; switch (level) { case SND_SOC_BIAS_ON: case SND_SOC_BIAS_PREPARE: /* VMID=2*40k */ snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1, WM8993_VMID_SEL_MASK, 0x2); snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_2, WM8993_TSHUT_ENA, WM8993_TSHUT_ENA); break; case SND_SOC_BIAS_STANDBY: if (codec->bias_level == SND_SOC_BIAS_OFF) { /* Bring up VMID with fast soft start */ snd_soc_update_bits(codec, WM8993_ANTIPOP2, WM8993_STARTUP_BIAS_ENA | WM8993_VMID_BUF_ENA | WM8993_VMID_RAMP_MASK | WM8993_BIAS_SRC, WM8993_STARTUP_BIAS_ENA | WM8993_VMID_BUF_ENA | WM8993_VMID_RAMP_MASK | WM8993_BIAS_SRC); /* If either line output is single ended we * need the VMID buffer */ if (!wm8993->pdata.lineout1_diff || !wm8993->pdata.lineout2_diff) snd_soc_update_bits(codec, WM8993_ANTIPOP1, WM8993_LINEOUT_VMID_BUF_ENA, WM8993_LINEOUT_VMID_BUF_ENA); /* VMID=2*40k */ snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1, WM8993_VMID_SEL_MASK | WM8993_BIAS_ENA, WM8993_BIAS_ENA | 0x2); msleep(32); /* Switch to normal bias */ snd_soc_update_bits(codec, WM8993_ANTIPOP2, WM8993_BIAS_SRC | WM8993_STARTUP_BIAS_ENA, 0); } /* VMID=2*240k */ snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1, WM8993_VMID_SEL_MASK, 0x4); snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_2, WM8993_TSHUT_ENA, 0); break; case SND_SOC_BIAS_OFF: snd_soc_update_bits(codec, WM8993_ANTIPOP1, WM8993_LINEOUT_VMID_BUF_ENA, 0); snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1, WM8993_VMID_SEL_MASK | WM8993_BIAS_ENA, 0); break; } codec->bias_level = level; return 0; } static int wm8993_set_sysclk(struct snd_soc_dai *codec_dai, int clk_id, unsigned int freq, int dir) { struct snd_soc_codec *codec = codec_dai->codec; struct wm8993_priv *wm8993 = codec->private_data; switch (clk_id) { case WM8993_SYSCLK_MCLK: wm8993->mclk_rate = freq; case WM8993_SYSCLK_FLL: wm8993->sysclk_source = clk_id; break; default: return -EINVAL; } return 0; } static int wm8993_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) { struct snd_soc_codec *codec = dai->codec; struct wm8993_priv *wm8993 = codec->private_data; unsigned int aif1 = wm8993_read(codec, WM8993_AUDIO_INTERFACE_1); unsigned int aif4 = wm8993_read(codec, WM8993_AUDIO_INTERFACE_4); aif1 &= ~(WM8993_BCLK_DIR | WM8993_AIF_BCLK_INV | WM8993_AIF_LRCLK_INV | WM8993_AIF_FMT_MASK); aif4 &= ~WM8993_LRCLK_DIR; switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { case SND_SOC_DAIFMT_CBS_CFS: wm8993->master = 0; break; case SND_SOC_DAIFMT_CBS_CFM: aif4 |= WM8993_LRCLK_DIR; wm8993->master = 1; break; case SND_SOC_DAIFMT_CBM_CFS: aif1 |= WM8993_BCLK_DIR; wm8993->master = 1; break; case SND_SOC_DAIFMT_CBM_CFM: aif1 |= WM8993_BCLK_DIR; aif4 |= WM8993_LRCLK_DIR; wm8993->master = 1; break; default: return -EINVAL; } switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_DSP_B: aif1 |= WM8993_AIF_LRCLK_INV; case SND_SOC_DAIFMT_DSP_A: aif1 |= 0x18; break; case SND_SOC_DAIFMT_I2S: aif1 |= 0x10; break; case SND_SOC_DAIFMT_RIGHT_J: break; case SND_SOC_DAIFMT_LEFT_J: aif1 |= 0x8; break; default: return -EINVAL; } switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_DSP_A: case SND_SOC_DAIFMT_DSP_B: /* frame inversion not valid for DSP modes */ switch (fmt & SND_SOC_DAIFMT_INV_MASK) { case SND_SOC_DAIFMT_NB_NF: break; case SND_SOC_DAIFMT_IB_NF: aif1 |= WM8993_AIF_BCLK_INV; break; default: return -EINVAL; } break; case SND_SOC_DAIFMT_I2S: case SND_SOC_DAIFMT_RIGHT_J: case SND_SOC_DAIFMT_LEFT_J: switch (fmt & SND_SOC_DAIFMT_INV_MASK) { case SND_SOC_DAIFMT_NB_NF: break; case SND_SOC_DAIFMT_IB_IF: aif1 |= WM8993_AIF_BCLK_INV | WM8993_AIF_LRCLK_INV; break; case SND_SOC_DAIFMT_IB_NF: aif1 |= WM8993_AIF_BCLK_INV; break; case SND_SOC_DAIFMT_NB_IF: aif1 |= WM8993_AIF_LRCLK_INV; break; default: return -EINVAL; } break; default: return -EINVAL; } wm8993_write(codec, WM8993_AUDIO_INTERFACE_1, aif1); wm8993_write(codec, WM8993_AUDIO_INTERFACE_4, aif4); return 0; } static int wm8993_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { struct snd_soc_codec *codec = dai->codec; struct wm8993_priv *wm8993 = codec->private_data; int ret, i, best, best_val, cur_val; unsigned int clocking1, clocking3, aif1, aif4; clocking1 = wm8993_read(codec, WM8993_CLOCKING_1); clocking1 &= ~WM8993_BCLK_DIV_MASK; clocking3 = wm8993_read(codec, WM8993_CLOCKING_3); clocking3 &= ~(WM8993_CLK_SYS_RATE_MASK | WM8993_SAMPLE_RATE_MASK); aif1 = wm8993_read(codec, WM8993_AUDIO_INTERFACE_1); aif1 &= ~WM8993_AIF_WL_MASK; aif4 = wm8993_read(codec, WM8993_AUDIO_INTERFACE_4); aif4 &= ~WM8993_LRCLK_RATE_MASK; /* What BCLK do we need? */ wm8993->fs = params_rate(params); wm8993->bclk = 2 * wm8993->fs; if (wm8993->tdm_slots) { dev_dbg(codec->dev, "Configuring for %d %d bit TDM slots\n", wm8993->tdm_slots, wm8993->tdm_width); wm8993->bclk *= wm8993->tdm_width * wm8993->tdm_slots; } else { switch (params_format(params)) { case SNDRV_PCM_FORMAT_S16_LE: wm8993->bclk *= 16; break; case SNDRV_PCM_FORMAT_S20_3LE: wm8993->bclk *= 20; aif1 |= 0x8; break; case SNDRV_PCM_FORMAT_S24_LE: wm8993->bclk *= 24; aif1 |= 0x10; break; case SNDRV_PCM_FORMAT_S32_LE: wm8993->bclk *= 32; aif1 |= 0x18; break; default: return -EINVAL; } } dev_dbg(codec->dev, "Target BCLK is %dHz\n", wm8993->bclk); ret = configure_clock(codec); if (ret != 0) return ret; /* Select nearest CLK_SYS_RATE */ best = 0; best_val = abs((wm8993->sysclk_rate / clk_sys_rates[0].ratio) - wm8993->fs); for (i = 1; i < ARRAY_SIZE(clk_sys_rates); i++) { cur_val = abs((wm8993->sysclk_rate / clk_sys_rates[i].ratio) - wm8993->fs);; if (cur_val < best_val) { best = i; best_val = cur_val; } } dev_dbg(codec->dev, "Selected CLK_SYS_RATIO of %d\n", clk_sys_rates[best].ratio); clocking3 |= (clk_sys_rates[best].clk_sys_rate << WM8993_CLK_SYS_RATE_SHIFT); /* SAMPLE_RATE */ best = 0; best_val = abs(wm8993->fs - sample_rates[0].rate); for (i = 1; i < ARRAY_SIZE(sample_rates); i++) { /* Closest match */ cur_val = abs(wm8993->fs - sample_rates[i].rate); if (cur_val < best_val) { best = i; best_val = cur_val; } } dev_dbg(codec->dev, "Selected SAMPLE_RATE of %dHz\n", sample_rates[best].rate); clocking3 |= (sample_rates[best].sample_rate << WM8993_SAMPLE_RATE_SHIFT); /* BCLK_DIV */ best = 0; best_val = INT_MAX; for (i = 0; i < ARRAY_SIZE(bclk_divs); i++) { cur_val = ((wm8993->sysclk_rate * 10) / bclk_divs[i].div) - wm8993->bclk; if (cur_val < 0) /* Table is sorted */ break; if (cur_val < best_val) { best = i; best_val = cur_val; } } wm8993->bclk = (wm8993->sysclk_rate * 10) / bclk_divs[best].div; dev_dbg(codec->dev, "Selected BCLK_DIV of %d for %dHz BCLK\n", bclk_divs[best].div, wm8993->bclk); clocking1 |= bclk_divs[best].bclk_div << WM8993_BCLK_DIV_SHIFT; /* LRCLK is a simple fraction of BCLK */ dev_dbg(codec->dev, "LRCLK_RATE is %d\n", wm8993->bclk / wm8993->fs); aif4 |= wm8993->bclk / wm8993->fs; wm8993_write(codec, WM8993_CLOCKING_1, clocking1); wm8993_write(codec, WM8993_CLOCKING_3, clocking3); wm8993_write(codec, WM8993_AUDIO_INTERFACE_1, aif1); wm8993_write(codec, WM8993_AUDIO_INTERFACE_4, aif4); /* ReTune Mobile? */ if (wm8993->pdata.num_retune_configs) { u16 eq1 = wm8993_read(codec, WM8993_EQ1); struct wm8993_retune_mobile_setting *s; best = 0; best_val = abs(wm8993->pdata.retune_configs[0].rate - wm8993->fs); for (i = 0; i < wm8993->pdata.num_retune_configs; i++) { cur_val = abs(wm8993->pdata.retune_configs[i].rate - wm8993->fs); if (cur_val < best_val) { best_val = cur_val; best = i; } } s = &wm8993->pdata.retune_configs[best]; dev_dbg(codec->dev, "ReTune Mobile %s tuned for %dHz\n", s->name, s->rate); /* Disable EQ while we reconfigure */ snd_soc_update_bits(codec, WM8993_EQ1, WM8993_EQ_ENA, 0); for (i = 1; i < ARRAY_SIZE(s->config); i++) wm8993_write(codec, WM8993_EQ1 + i, s->config[i]); snd_soc_update_bits(codec, WM8993_EQ1, WM8993_EQ_ENA, eq1); } return 0; } static int wm8993_digital_mute(struct snd_soc_dai *codec_dai, int mute) { struct snd_soc_codec *codec = codec_dai->codec; unsigned int reg; reg = wm8993_read(codec, WM8993_DAC_CTRL); if (mute) reg |= WM8993_DAC_MUTE; else reg &= ~WM8993_DAC_MUTE; wm8993_write(codec, WM8993_DAC_CTRL, reg); return 0; } static int wm8993_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width) { struct snd_soc_codec *codec = dai->codec; struct wm8993_priv *wm8993 = codec->private_data; int aif1 = 0; int aif2 = 0; /* Don't need to validate anything if we're turning off TDM */ if (slots == 0) { wm8993->tdm_slots = 0; goto out; } /* Note that we allow configurations we can't handle ourselves - * for example, we can generate clocks for slots 2 and up even if * we can't use those slots ourselves. */ aif1 |= WM8993_AIFADC_TDM; aif2 |= WM8993_AIFDAC_TDM; switch (rx_mask) { case 3: break; case 0xc: aif1 |= WM8993_AIFADC_TDM_CHAN; break; default: return -EINVAL; } switch (tx_mask) { case 3: break; case 0xc: aif2 |= WM8993_AIFDAC_TDM_CHAN; break; default: return -EINVAL; } out: wm8993->tdm_width = slot_width; wm8993->tdm_slots = slots / 2; snd_soc_update_bits(codec, WM8993_AUDIO_INTERFACE_1, WM8993_AIFADC_TDM | WM8993_AIFADC_TDM_CHAN, aif1); snd_soc_update_bits(codec, WM8993_AUDIO_INTERFACE_2, WM8993_AIFDAC_TDM | WM8993_AIFDAC_TDM_CHAN, aif2); return 0; } static struct snd_soc_dai_ops wm8993_ops = { .set_sysclk = wm8993_set_sysclk, .set_fmt = wm8993_set_dai_fmt, .hw_params = wm8993_hw_params, .digital_mute = wm8993_digital_mute, .set_pll = wm8993_set_fll, .set_tdm_slot = wm8993_set_tdm_slot, }; #define WM8993_RATES SNDRV_PCM_RATE_8000_48000 #define WM8993_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\ SNDRV_PCM_FMTBIT_S20_3LE |\ SNDRV_PCM_FMTBIT_S24_LE |\ SNDRV_PCM_FMTBIT_S32_LE) struct snd_soc_dai wm8993_dai = { .name = "WM8993", .playback = { .stream_name = "Playback", .channels_min = 1, .channels_max = 2, .rates = WM8993_RATES, .formats = WM8993_FORMATS, }, .capture = { .stream_name = "Capture", .channels_min = 1, .channels_max = 2, .rates = WM8993_RATES, .formats = WM8993_FORMATS, }, .ops = &wm8993_ops, .symmetric_rates = 1, }; EXPORT_SYMBOL_GPL(wm8993_dai); static struct snd_soc_codec *wm8993_codec; static int wm8993_probe(struct platform_device *pdev) { struct snd_soc_device *socdev = platform_get_drvdata(pdev); struct snd_soc_codec *codec; struct wm8993_priv *wm8993; int ret = 0; if (!wm8993_codec) { dev_err(&pdev->dev, "I2C device not yet probed\n"); goto err; } socdev->card->codec = wm8993_codec; codec = wm8993_codec; wm8993 = codec->private_data; ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); if (ret < 0) { dev_err(codec->dev, "failed to create pcms\n"); goto err; } snd_soc_add_controls(codec, wm8993_snd_controls, ARRAY_SIZE(wm8993_snd_controls)); if (wm8993->pdata.num_retune_configs != 0) { dev_dbg(codec->dev, "Using ReTune Mobile\n"); } else { dev_dbg(codec->dev, "No ReTune Mobile, using normal EQ\n"); snd_soc_add_controls(codec, wm8993_eq_controls, ARRAY_SIZE(wm8993_eq_controls)); } snd_soc_dapm_new_controls(codec, wm8993_dapm_widgets, ARRAY_SIZE(wm8993_dapm_widgets)); wm_hubs_add_analogue_controls(codec); snd_soc_dapm_add_routes(codec, routes, ARRAY_SIZE(routes)); wm_hubs_add_analogue_routes(codec, wm8993->pdata.lineout1_diff, wm8993->pdata.lineout2_diff); snd_soc_dapm_new_widgets(codec); ret = snd_soc_init_card(socdev); if (ret < 0) { dev_err(codec->dev, "failed to register card\n"); goto card_err; } return ret; card_err: snd_soc_free_pcms(socdev); snd_soc_dapm_free(socdev); err: return ret; } static int wm8993_remove(struct platform_device *pdev) { struct snd_soc_device *socdev = platform_get_drvdata(pdev); snd_soc_free_pcms(socdev); snd_soc_dapm_free(socdev); return 0; } struct snd_soc_codec_device soc_codec_dev_wm8993 = { .probe = wm8993_probe, .remove = wm8993_remove, }; EXPORT_SYMBOL_GPL(soc_codec_dev_wm8993); static int wm8993_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct wm8993_priv *wm8993; struct snd_soc_codec *codec; unsigned int val; int ret; if (wm8993_codec) { dev_err(&i2c->dev, "A WM8993 is already registered\n"); return -EINVAL; } wm8993 = kzalloc(sizeof(struct wm8993_priv), GFP_KERNEL); if (wm8993 == NULL) return -ENOMEM; codec = &wm8993->codec; if (i2c->dev.platform_data) memcpy(&wm8993->pdata, i2c->dev.platform_data, sizeof(wm8993->pdata)); mutex_init(&codec->mutex); INIT_LIST_HEAD(&codec->dapm_widgets); INIT_LIST_HEAD(&codec->dapm_paths); codec->name = "WM8993"; codec->read = wm8993_read; codec->write = wm8993_write; codec->hw_write = (hw_write_t)i2c_master_send; codec->reg_cache = wm8993->reg_cache; codec->reg_cache_size = ARRAY_SIZE(wm8993->reg_cache); codec->bias_level = SND_SOC_BIAS_OFF; codec->set_bias_level = wm8993_set_bias_level; codec->dai = &wm8993_dai; codec->num_dai = 1; codec->private_data = wm8993; memcpy(wm8993->reg_cache, wm8993_reg_defaults, sizeof(wm8993->reg_cache)); i2c_set_clientdata(i2c, wm8993); codec->control_data = i2c; wm8993_codec = codec; codec->dev = &i2c->dev; val = wm8993_read_hw(codec, WM8993_SOFTWARE_RESET); if (val != wm8993_reg_defaults[WM8993_SOFTWARE_RESET]) { dev_err(codec->dev, "Invalid ID register value %x\n", val); ret = -EINVAL; goto err; } ret = wm8993_write(codec, WM8993_SOFTWARE_RESET, 0xffff); if (ret != 0) goto err; /* By default we're using the output mixers */ wm8993->class_w_users = 2; /* Latch volume update bits and default ZC on */ snd_soc_update_bits(codec, WM8993_RIGHT_DAC_DIGITAL_VOLUME, WM8993_DAC_VU, WM8993_DAC_VU); snd_soc_update_bits(codec, WM8993_RIGHT_ADC_DIGITAL_VOLUME, WM8993_ADC_VU, WM8993_ADC_VU); /* Manualy manage the HPOUT sequencing for independent stereo * control. */ snd_soc_update_bits(codec, WM8993_ANALOGUE_HP_0, WM8993_HPOUT1_AUTO_PU, 0); /* Use automatic clock configuration */ snd_soc_update_bits(codec, WM8993_CLOCKING_4, WM8993_SR_MODE, 0); if (!wm8993->pdata.lineout1_diff) snd_soc_update_bits(codec, WM8993_LINE_MIXER1, WM8993_LINEOUT1_MODE, WM8993_LINEOUT1_MODE); if (!wm8993->pdata.lineout2_diff) snd_soc_update_bits(codec, WM8993_LINE_MIXER2, WM8993_LINEOUT2_MODE, WM8993_LINEOUT2_MODE); if (wm8993->pdata.lineout1fb) snd_soc_update_bits(codec, WM8993_ADDITIONAL_CONTROL, WM8993_LINEOUT1_FB, WM8993_LINEOUT1_FB); if (wm8993->pdata.lineout2fb) snd_soc_update_bits(codec, WM8993_ADDITIONAL_CONTROL, WM8993_LINEOUT2_FB, WM8993_LINEOUT2_FB); /* Apply the microphone bias/detection configuration - the * platform data is directly applicable to the register. */ snd_soc_update_bits(codec, WM8993_MICBIAS, WM8993_JD_SCTHR_MASK | WM8993_JD_THR_MASK | WM8993_MICB1_LVL | WM8993_MICB2_LVL, wm8993->pdata.jd_scthr << WM8993_JD_SCTHR_SHIFT | wm8993->pdata.jd_thr << WM8993_JD_THR_SHIFT | wm8993->pdata.micbias1_lvl | wm8993->pdata.micbias1_lvl << 1); ret = wm8993_set_bias_level(codec, SND_SOC_BIAS_STANDBY); if (ret != 0) goto err; wm8993_dai.dev = codec->dev; ret = snd_soc_register_dai(&wm8993_dai); if (ret != 0) goto err_bias; ret = snd_soc_register_codec(codec); return 0; err_bias: wm8993_set_bias_level(codec, SND_SOC_BIAS_OFF); err: wm8993_codec = NULL; kfree(wm8993); return ret; } static int wm8993_i2c_remove(struct i2c_client *client) { struct wm8993_priv *wm8993 = i2c_get_clientdata(client); snd_soc_unregister_codec(&wm8993->codec); snd_soc_unregister_dai(&wm8993_dai); wm8993_set_bias_level(&wm8993->codec, SND_SOC_BIAS_OFF); kfree(wm8993); return 0; } static const struct i2c_device_id wm8993_i2c_id[] = { { "wm8993", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, wm8993_i2c_id); static struct i2c_driver wm8993_i2c_driver = { .driver = { .name = "WM8993", .owner = THIS_MODULE, }, .probe = wm8993_i2c_probe, .remove = wm8993_i2c_remove, .id_table = wm8993_i2c_id, }; static int __init wm8993_modinit(void) { int ret; ret = i2c_add_driver(&wm8993_i2c_driver); if (ret != 0) pr_err("WM8993: Unable to register I2C driver: %d\n", ret); return ret; } module_init(wm8993_modinit); static void __exit wm8993_exit(void) { i2c_del_driver(&wm8993_i2c_driver); } module_exit(wm8993_exit); MODULE_DESCRIPTION("ASoC WM8993 driver"); MODULE_AUTHOR("Mark Brown "); MODULE_LICENSE("GPL");