From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/sound/soc/codecs/wm9081.c | 1395 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 1395 insertions(+) create mode 100644 kernel/sound/soc/codecs/wm9081.c (limited to 'kernel/sound/soc/codecs/wm9081.c') diff --git a/kernel/sound/soc/codecs/wm9081.c b/kernel/sound/soc/codecs/wm9081.c new file mode 100644 index 000000000..13a3f335e --- /dev/null +++ b/kernel/sound/soc/codecs/wm9081.c @@ -0,0 +1,1395 @@ +/* + * wm9081.c -- WM9081 ALSA SoC Audio driver + * + * Author: Mark Brown + * + * Copyright 2009-12 Wolfson Microelectronics plc + * + * 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 +#include "wm9081.h" + +static struct reg_default wm9081_reg[] = { + { 2, 0x00B9 }, /* R2 - Analogue Lineout */ + { 3, 0x00B9 }, /* R3 - Analogue Speaker PGA */ + { 4, 0x0001 }, /* R4 - VMID Control */ + { 5, 0x0068 }, /* R5 - Bias Control 1 */ + { 7, 0x0000 }, /* R7 - Analogue Mixer */ + { 8, 0x0000 }, /* R8 - Anti Pop Control */ + { 9, 0x01DB }, /* R9 - Analogue Speaker 1 */ + { 10, 0x0018 }, /* R10 - Analogue Speaker 2 */ + { 11, 0x0180 }, /* R11 - Power Management */ + { 12, 0x0000 }, /* R12 - Clock Control 1 */ + { 13, 0x0038 }, /* R13 - Clock Control 2 */ + { 14, 0x4000 }, /* R14 - Clock Control 3 */ + { 16, 0x0000 }, /* R16 - FLL Control 1 */ + { 17, 0x0200 }, /* R17 - FLL Control 2 */ + { 18, 0x0000 }, /* R18 - FLL Control 3 */ + { 19, 0x0204 }, /* R19 - FLL Control 4 */ + { 20, 0x0000 }, /* R20 - FLL Control 5 */ + { 22, 0x0000 }, /* R22 - Audio Interface 1 */ + { 23, 0x0002 }, /* R23 - Audio Interface 2 */ + { 24, 0x0008 }, /* R24 - Audio Interface 3 */ + { 25, 0x0022 }, /* R25 - Audio Interface 4 */ + { 27, 0x0006 }, /* R27 - Interrupt Status Mask */ + { 28, 0x0000 }, /* R28 - Interrupt Polarity */ + { 29, 0x0000 }, /* R29 - Interrupt Control */ + { 30, 0x00C0 }, /* R30 - DAC Digital 1 */ + { 31, 0x0008 }, /* R31 - DAC Digital 2 */ + { 32, 0x09AF }, /* R32 - DRC 1 */ + { 33, 0x4201 }, /* R33 - DRC 2 */ + { 34, 0x0000 }, /* R34 - DRC 3 */ + { 35, 0x0000 }, /* R35 - DRC 4 */ + { 38, 0x0000 }, /* R38 - Write Sequencer 1 */ + { 39, 0x0000 }, /* R39 - Write Sequencer 2 */ + { 40, 0x0002 }, /* R40 - MW Slave 1 */ + { 42, 0x0000 }, /* R42 - EQ 1 */ + { 43, 0x0000 }, /* R43 - EQ 2 */ + { 44, 0x0FCA }, /* R44 - EQ 3 */ + { 45, 0x0400 }, /* R45 - EQ 4 */ + { 46, 0x00B8 }, /* R46 - EQ 5 */ + { 47, 0x1EB5 }, /* R47 - EQ 6 */ + { 48, 0xF145 }, /* R48 - EQ 7 */ + { 49, 0x0B75 }, /* R49 - EQ 8 */ + { 50, 0x01C5 }, /* R50 - EQ 9 */ + { 51, 0x169E }, /* R51 - EQ 10 */ + { 52, 0xF829 }, /* R52 - EQ 11 */ + { 53, 0x07AD }, /* R53 - EQ 12 */ + { 54, 0x1103 }, /* R54 - EQ 13 */ + { 55, 0x1C58 }, /* R55 - EQ 14 */ + { 56, 0xF373 }, /* R56 - EQ 15 */ + { 57, 0x0A54 }, /* R57 - EQ 16 */ + { 58, 0x0558 }, /* R58 - EQ 17 */ + { 59, 0x0564 }, /* R59 - EQ 18 */ + { 60, 0x0559 }, /* R60 - EQ 19 */ + { 61, 0x4000 }, /* R61 - EQ 20 */ +}; + +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, 2 }, + { 16000, 3 }, + { 22050, 4 }, + { 24000, 5 }, + { 32000, 6 }, + { 44100, 7 }, + { 48000, 8 }, + { 88200, 9 }, + { 96000, 10 }, +}; + +static struct { + int div; /* *10 due to .5s */ + int bclk_div; +} bclk_divs[] = { + { 10, 0 }, + { 15, 1 }, + { 20, 2 }, + { 30, 3 }, + { 40, 4 }, + { 50, 5 }, + { 55, 6 }, + { 60, 7 }, + { 80, 8 }, + { 100, 9 }, + { 110, 10 }, + { 120, 11 }, + { 160, 12 }, + { 200, 13 }, + { 220, 14 }, + { 240, 15 }, + { 250, 16 }, + { 300, 17 }, + { 320, 18 }, + { 440, 19 }, + { 480, 20 }, +}; + +struct wm9081_priv { + struct regmap *regmap; + int sysclk_source; + int mclk_rate; + int sysclk_rate; + int fs; + int bclk; + int master; + int fll_fref; + int fll_fout; + int tdm_width; + struct wm9081_pdata pdata; +}; + +static bool wm9081_volatile_register(struct device *dev, unsigned int reg) +{ + switch (reg) { + case WM9081_SOFTWARE_RESET: + case WM9081_INTERRUPT_STATUS: + return true; + default: + return false; + } +} + +static bool wm9081_readable_register(struct device *dev, unsigned int reg) +{ + switch (reg) { + case WM9081_SOFTWARE_RESET: + case WM9081_ANALOGUE_LINEOUT: + case WM9081_ANALOGUE_SPEAKER_PGA: + case WM9081_VMID_CONTROL: + case WM9081_BIAS_CONTROL_1: + case WM9081_ANALOGUE_MIXER: + case WM9081_ANTI_POP_CONTROL: + case WM9081_ANALOGUE_SPEAKER_1: + case WM9081_ANALOGUE_SPEAKER_2: + case WM9081_POWER_MANAGEMENT: + case WM9081_CLOCK_CONTROL_1: + case WM9081_CLOCK_CONTROL_2: + case WM9081_CLOCK_CONTROL_3: + case WM9081_FLL_CONTROL_1: + case WM9081_FLL_CONTROL_2: + case WM9081_FLL_CONTROL_3: + case WM9081_FLL_CONTROL_4: + case WM9081_FLL_CONTROL_5: + case WM9081_AUDIO_INTERFACE_1: + case WM9081_AUDIO_INTERFACE_2: + case WM9081_AUDIO_INTERFACE_3: + case WM9081_AUDIO_INTERFACE_4: + case WM9081_INTERRUPT_STATUS: + case WM9081_INTERRUPT_STATUS_MASK: + case WM9081_INTERRUPT_POLARITY: + case WM9081_INTERRUPT_CONTROL: + case WM9081_DAC_DIGITAL_1: + case WM9081_DAC_DIGITAL_2: + case WM9081_DRC_1: + case WM9081_DRC_2: + case WM9081_DRC_3: + case WM9081_DRC_4: + case WM9081_WRITE_SEQUENCER_1: + case WM9081_WRITE_SEQUENCER_2: + case WM9081_MW_SLAVE_1: + case WM9081_EQ_1: + case WM9081_EQ_2: + case WM9081_EQ_3: + case WM9081_EQ_4: + case WM9081_EQ_5: + case WM9081_EQ_6: + case WM9081_EQ_7: + case WM9081_EQ_8: + case WM9081_EQ_9: + case WM9081_EQ_10: + case WM9081_EQ_11: + case WM9081_EQ_12: + case WM9081_EQ_13: + case WM9081_EQ_14: + case WM9081_EQ_15: + case WM9081_EQ_16: + case WM9081_EQ_17: + case WM9081_EQ_18: + case WM9081_EQ_19: + case WM9081_EQ_20: + return true; + default: + return false; + } +} + +static int wm9081_reset(struct regmap *map) +{ + return regmap_write(map, WM9081_SOFTWARE_RESET, 0x9081); +} + +static const DECLARE_TLV_DB_SCALE(drc_in_tlv, -4500, 75, 0); +static const DECLARE_TLV_DB_SCALE(drc_out_tlv, -2250, 75, 0); +static const DECLARE_TLV_DB_SCALE(drc_min_tlv, -1800, 600, 0); +static unsigned int drc_max_tlv[] = { + TLV_DB_RANGE_HEAD(4), + 0, 0, TLV_DB_SCALE_ITEM(1200, 0, 0), + 1, 1, TLV_DB_SCALE_ITEM(1800, 0, 0), + 2, 2, TLV_DB_SCALE_ITEM(2400, 0, 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, -300, 50, 0); + +static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0); + +static const DECLARE_TLV_DB_SCALE(in_tlv, -600, 600, 0); +static const DECLARE_TLV_DB_SCALE(dac_tlv, -7200, 75, 1); +static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0); + +static const char *drc_high_text[] = { + "1", + "1/2", + "1/4", + "1/8", + "1/16", + "0", +}; + +static SOC_ENUM_SINGLE_DECL(drc_high, WM9081_DRC_3, 3, drc_high_text); + +static const char *drc_low_text[] = { + "1", + "1/2", + "1/4", + "1/8", + "0", +}; + +static SOC_ENUM_SINGLE_DECL(drc_low, WM9081_DRC_3, 0, drc_low_text); + +static const char *drc_atk_text[] = { + "181us", + "181us", + "363us", + "726us", + "1.45ms", + "2.9ms", + "5.8ms", + "11.6ms", + "23.2ms", + "46.4ms", + "92.8ms", + "185.6ms", +}; + +static SOC_ENUM_SINGLE_DECL(drc_atk, WM9081_DRC_2, 12, drc_atk_text); + +static const char *drc_dcy_text[] = { + "186ms", + "372ms", + "743ms", + "1.49s", + "2.97s", + "5.94s", + "11.89s", + "23.78s", + "47.56s", +}; + +static SOC_ENUM_SINGLE_DECL(drc_dcy, WM9081_DRC_2, 8, drc_dcy_text); + +static const char *drc_qr_dcy_text[] = { + "0.725ms", + "1.45ms", + "5.8ms", +}; + +static SOC_ENUM_SINGLE_DECL(drc_qr_dcy, WM9081_DRC_2, 4, drc_qr_dcy_text); + +static const char *dac_deemph_text[] = { + "None", + "32kHz", + "44.1kHz", + "48kHz", +}; + +static SOC_ENUM_SINGLE_DECL(dac_deemph, WM9081_DAC_DIGITAL_2, 1, + dac_deemph_text); + +static const char *speaker_mode_text[] = { + "Class D", + "Class AB", +}; + +static SOC_ENUM_SINGLE_DECL(speaker_mode, WM9081_ANALOGUE_SPEAKER_2, 6, + speaker_mode_text); + +static int speaker_mode_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); + unsigned int reg; + + reg = snd_soc_read(codec, WM9081_ANALOGUE_SPEAKER_2); + if (reg & WM9081_SPK_MODE) + ucontrol->value.integer.value[0] = 1; + else + ucontrol->value.integer.value[0] = 0; + + return 0; +} + +/* + * Stop any attempts to change speaker mode while the speaker is enabled. + * + * We also have some special anti-pop controls dependent on speaker + * mode which must be changed along with the mode. + */ +static int speaker_mode_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); + unsigned int reg_pwr = snd_soc_read(codec, WM9081_POWER_MANAGEMENT); + unsigned int reg2 = snd_soc_read(codec, WM9081_ANALOGUE_SPEAKER_2); + + /* Are we changing anything? */ + if (ucontrol->value.integer.value[0] == + ((reg2 & WM9081_SPK_MODE) != 0)) + return 0; + + /* Don't try to change modes while enabled */ + if (reg_pwr & WM9081_SPK_ENA) + return -EINVAL; + + if (ucontrol->value.integer.value[0]) { + /* Class AB */ + reg2 &= ~(WM9081_SPK_INV_MUTE | WM9081_OUT_SPK_CTRL); + reg2 |= WM9081_SPK_MODE; + } else { + /* Class D */ + reg2 |= WM9081_SPK_INV_MUTE | WM9081_OUT_SPK_CTRL; + reg2 &= ~WM9081_SPK_MODE; + } + + snd_soc_write(codec, WM9081_ANALOGUE_SPEAKER_2, reg2); + + return 0; +} + +static const struct snd_kcontrol_new wm9081_snd_controls[] = { +SOC_SINGLE_TLV("IN1 Volume", WM9081_ANALOGUE_MIXER, 1, 1, 1, in_tlv), +SOC_SINGLE_TLV("IN2 Volume", WM9081_ANALOGUE_MIXER, 3, 1, 1, in_tlv), + +SOC_SINGLE_TLV("Playback Volume", WM9081_DAC_DIGITAL_1, 1, 96, 0, dac_tlv), + +SOC_SINGLE("LINEOUT Switch", WM9081_ANALOGUE_LINEOUT, 7, 1, 1), +SOC_SINGLE("LINEOUT ZC Switch", WM9081_ANALOGUE_LINEOUT, 6, 1, 0), +SOC_SINGLE_TLV("LINEOUT Volume", WM9081_ANALOGUE_LINEOUT, 0, 63, 0, out_tlv), + +SOC_SINGLE("DRC Switch", WM9081_DRC_1, 15, 1, 0), +SOC_ENUM("DRC High Slope", drc_high), +SOC_ENUM("DRC Low Slope", drc_low), +SOC_SINGLE_TLV("DRC Input Volume", WM9081_DRC_4, 5, 60, 1, drc_in_tlv), +SOC_SINGLE_TLV("DRC Output Volume", WM9081_DRC_4, 0, 30, 1, drc_out_tlv), +SOC_SINGLE_TLV("DRC Minimum Volume", WM9081_DRC_2, 2, 3, 1, drc_min_tlv), +SOC_SINGLE_TLV("DRC Maximum Volume", WM9081_DRC_2, 0, 3, 0, drc_max_tlv), +SOC_ENUM("DRC Attack", drc_atk), +SOC_ENUM("DRC Decay", drc_dcy), +SOC_SINGLE("DRC Quick Release Switch", WM9081_DRC_1, 2, 1, 0), +SOC_SINGLE_TLV("DRC Quick Release Volume", WM9081_DRC_2, 6, 3, 0, drc_qr_tlv), +SOC_ENUM("DRC Quick Release Decay", drc_qr_dcy), +SOC_SINGLE_TLV("DRC Startup Volume", WM9081_DRC_1, 6, 18, 0, drc_startup_tlv), + +SOC_SINGLE("EQ Switch", WM9081_EQ_1, 0, 1, 0), + +SOC_SINGLE("Speaker DC Volume", WM9081_ANALOGUE_SPEAKER_1, 3, 5, 0), +SOC_SINGLE("Speaker AC Volume", WM9081_ANALOGUE_SPEAKER_1, 0, 5, 0), +SOC_SINGLE("Speaker Switch", WM9081_ANALOGUE_SPEAKER_PGA, 7, 1, 1), +SOC_SINGLE("Speaker ZC Switch", WM9081_ANALOGUE_SPEAKER_PGA, 6, 1, 0), +SOC_SINGLE_TLV("Speaker Volume", WM9081_ANALOGUE_SPEAKER_PGA, 0, 63, 0, + out_tlv), +SOC_ENUM("DAC Deemphasis", dac_deemph), +SOC_ENUM_EXT("Speaker Mode", speaker_mode, speaker_mode_get, speaker_mode_put), +}; + +static const struct snd_kcontrol_new wm9081_eq_controls[] = { +SOC_SINGLE_TLV("EQ1 Volume", WM9081_EQ_1, 11, 24, 0, eq_tlv), +SOC_SINGLE_TLV("EQ2 Volume", WM9081_EQ_1, 6, 24, 0, eq_tlv), +SOC_SINGLE_TLV("EQ3 Volume", WM9081_EQ_1, 1, 24, 0, eq_tlv), +SOC_SINGLE_TLV("EQ4 Volume", WM9081_EQ_2, 11, 24, 0, eq_tlv), +SOC_SINGLE_TLV("EQ5 Volume", WM9081_EQ_2, 6, 24, 0, eq_tlv), +}; + +static const struct snd_kcontrol_new mixer[] = { +SOC_DAPM_SINGLE("IN1 Switch", WM9081_ANALOGUE_MIXER, 0, 1, 0), +SOC_DAPM_SINGLE("IN2 Switch", WM9081_ANALOGUE_MIXER, 2, 1, 0), +SOC_DAPM_SINGLE("Playback Switch", WM9081_ANALOGUE_MIXER, 4, 1, 0), +}; + +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; + while ((Fref / div) > 13500000) { + div *= 2; + + if (div > 8) { + pr_err("Can't scale %dMHz input down to <=13.5MHz\n", + Fref); + return -EINVAL; + } + } + fll_div->fll_clk_ref_div = div / 2; + + 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 appropriate 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 wm9081_set_fll(struct snd_soc_codec *codec, int fll_id, + unsigned int Fref, unsigned int Fout) +{ + struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec); + u16 reg1, reg4, reg5; + struct _fll_div fll_div; + int ret; + int clk_sys_reg; + + /* Any change? */ + if (Fref == wm9081->fll_fref && Fout == wm9081->fll_fout) + return 0; + + /* Disable the FLL */ + if (Fout == 0) { + dev_dbg(codec->dev, "FLL disabled\n"); + wm9081->fll_fref = 0; + wm9081->fll_fout = 0; + + return 0; + } + + ret = fll_factors(&fll_div, Fref, Fout); + if (ret != 0) + return ret; + + reg5 = snd_soc_read(codec, WM9081_FLL_CONTROL_5); + reg5 &= ~WM9081_FLL_CLK_SRC_MASK; + + switch (fll_id) { + case WM9081_SYSCLK_FLL_MCLK: + reg5 |= 0x1; + break; + + default: + dev_err(codec->dev, "Unknown FLL ID %d\n", fll_id); + return -EINVAL; + } + + /* Disable CLK_SYS while we reconfigure */ + clk_sys_reg = snd_soc_read(codec, WM9081_CLOCK_CONTROL_3); + if (clk_sys_reg & WM9081_CLK_SYS_ENA) + snd_soc_write(codec, WM9081_CLOCK_CONTROL_3, + clk_sys_reg & ~WM9081_CLK_SYS_ENA); + + /* Any FLL configuration change requires that the FLL be + * disabled first. */ + reg1 = snd_soc_read(codec, WM9081_FLL_CONTROL_1); + reg1 &= ~WM9081_FLL_ENA; + snd_soc_write(codec, WM9081_FLL_CONTROL_1, reg1); + + /* Apply the configuration */ + if (fll_div.k) + reg1 |= WM9081_FLL_FRAC_MASK; + else + reg1 &= ~WM9081_FLL_FRAC_MASK; + snd_soc_write(codec, WM9081_FLL_CONTROL_1, reg1); + + snd_soc_write(codec, WM9081_FLL_CONTROL_2, + (fll_div.fll_outdiv << WM9081_FLL_OUTDIV_SHIFT) | + (fll_div.fll_fratio << WM9081_FLL_FRATIO_SHIFT)); + snd_soc_write(codec, WM9081_FLL_CONTROL_3, fll_div.k); + + reg4 = snd_soc_read(codec, WM9081_FLL_CONTROL_4); + reg4 &= ~WM9081_FLL_N_MASK; + reg4 |= fll_div.n << WM9081_FLL_N_SHIFT; + snd_soc_write(codec, WM9081_FLL_CONTROL_4, reg4); + + reg5 &= ~WM9081_FLL_CLK_REF_DIV_MASK; + reg5 |= fll_div.fll_clk_ref_div << WM9081_FLL_CLK_REF_DIV_SHIFT; + snd_soc_write(codec, WM9081_FLL_CONTROL_5, reg5); + + /* Set gain to the recommended value */ + snd_soc_update_bits(codec, WM9081_FLL_CONTROL_4, + WM9081_FLL_GAIN_MASK, 0); + + /* Enable the FLL */ + snd_soc_write(codec, WM9081_FLL_CONTROL_1, reg1 | WM9081_FLL_ENA); + + /* Then bring CLK_SYS up again if it was disabled */ + if (clk_sys_reg & WM9081_CLK_SYS_ENA) + snd_soc_write(codec, WM9081_CLOCK_CONTROL_3, clk_sys_reg); + + dev_dbg(codec->dev, "FLL enabled at %dHz->%dHz\n", Fref, Fout); + + wm9081->fll_fref = Fref; + wm9081->fll_fout = Fout; + + return 0; +} + +static int configure_clock(struct snd_soc_codec *codec) +{ + struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec); + int new_sysclk, i, target; + unsigned int reg; + int ret = 0; + int mclkdiv = 0; + int fll = 0; + + switch (wm9081->sysclk_source) { + case WM9081_SYSCLK_MCLK: + if (wm9081->mclk_rate > 12225000) { + mclkdiv = 1; + wm9081->sysclk_rate = wm9081->mclk_rate / 2; + } else { + wm9081->sysclk_rate = wm9081->mclk_rate; + } + wm9081_set_fll(codec, WM9081_SYSCLK_FLL_MCLK, 0, 0); + break; + + case WM9081_SYSCLK_FLL_MCLK: + /* If we have a sample rate calculate a CLK_SYS that + * gives us a suitable DAC configuration, plus BCLK. + * Ideally we would check to see if we can clock + * directly from MCLK and only use the FLL if this is + * not the case, though care must be taken with free + * running mode. + */ + if (wm9081->master && wm9081->bclk) { + /* Make sure we can generate CLK_SYS and BCLK + * and that we've got 3MHz for optimal + * performance. */ + for (i = 0; i < ARRAY_SIZE(clk_sys_rates); i++) { + target = wm9081->fs * clk_sys_rates[i].ratio; + new_sysclk = target; + if (target >= wm9081->bclk && + target > 3000000) + break; + } + + if (i == ARRAY_SIZE(clk_sys_rates)) + return -EINVAL; + + } else if (wm9081->fs) { + for (i = 0; i < ARRAY_SIZE(clk_sys_rates); i++) { + new_sysclk = clk_sys_rates[i].ratio + * wm9081->fs; + if (new_sysclk > 3000000) + break; + } + + if (i == ARRAY_SIZE(clk_sys_rates)) + return -EINVAL; + + } else { + new_sysclk = 12288000; + } + + ret = wm9081_set_fll(codec, WM9081_SYSCLK_FLL_MCLK, + wm9081->mclk_rate, new_sysclk); + if (ret == 0) { + wm9081->sysclk_rate = new_sysclk; + + /* Switch SYSCLK over to FLL */ + fll = 1; + } else { + wm9081->sysclk_rate = wm9081->mclk_rate; + } + break; + + default: + return -EINVAL; + } + + reg = snd_soc_read(codec, WM9081_CLOCK_CONTROL_1); + if (mclkdiv) + reg |= WM9081_MCLKDIV2; + else + reg &= ~WM9081_MCLKDIV2; + snd_soc_write(codec, WM9081_CLOCK_CONTROL_1, reg); + + reg = snd_soc_read(codec, WM9081_CLOCK_CONTROL_3); + if (fll) + reg |= WM9081_CLK_SRC_SEL; + else + reg &= ~WM9081_CLK_SRC_SEL; + snd_soc_write(codec, WM9081_CLOCK_CONTROL_3, reg); + + dev_dbg(codec->dev, "CLK_SYS is %dHz\n", wm9081->sysclk_rate); + + return ret; +} + +static int clk_sys_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm); + struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec); + + /* This should be done on init() for bypass paths */ + switch (wm9081->sysclk_source) { + case WM9081_SYSCLK_MCLK: + dev_dbg(codec->dev, "Using %dHz MCLK\n", wm9081->mclk_rate); + break; + case WM9081_SYSCLK_FLL_MCLK: + dev_dbg(codec->dev, "Using %dHz MCLK with FLL\n", + wm9081->mclk_rate); + break; + default: + dev_err(codec->dev, "System clock not configured\n"); + return -EINVAL; + } + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + configure_clock(codec); + break; + + case SND_SOC_DAPM_POST_PMD: + /* Disable the FLL if it's running */ + wm9081_set_fll(codec, 0, 0, 0); + break; + } + + return 0; +} + +static const struct snd_soc_dapm_widget wm9081_dapm_widgets[] = { +SND_SOC_DAPM_INPUT("IN1"), +SND_SOC_DAPM_INPUT("IN2"), + +SND_SOC_DAPM_DAC("DAC", NULL, WM9081_POWER_MANAGEMENT, 0, 0), + +SND_SOC_DAPM_MIXER_NAMED_CTL("Mixer", SND_SOC_NOPM, 0, 0, + mixer, ARRAY_SIZE(mixer)), + +SND_SOC_DAPM_PGA("LINEOUT PGA", WM9081_POWER_MANAGEMENT, 4, 0, NULL, 0), + +SND_SOC_DAPM_PGA("Speaker PGA", WM9081_POWER_MANAGEMENT, 2, 0, NULL, 0), +SND_SOC_DAPM_OUT_DRV("Speaker", WM9081_POWER_MANAGEMENT, 1, 0, NULL, 0), + +SND_SOC_DAPM_OUTPUT("LINEOUT"), +SND_SOC_DAPM_OUTPUT("SPKN"), +SND_SOC_DAPM_OUTPUT("SPKP"), + +SND_SOC_DAPM_SUPPLY("CLK_SYS", WM9081_CLOCK_CONTROL_3, 0, 0, clk_sys_event, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), +SND_SOC_DAPM_SUPPLY("CLK_DSP", WM9081_CLOCK_CONTROL_3, 1, 0, NULL, 0), +SND_SOC_DAPM_SUPPLY("TOCLK", WM9081_CLOCK_CONTROL_3, 2, 0, NULL, 0), +SND_SOC_DAPM_SUPPLY("TSENSE", WM9081_POWER_MANAGEMENT, 7, 0, NULL, 0), +}; + + +static const struct snd_soc_dapm_route wm9081_audio_paths[] = { + { "DAC", NULL, "CLK_SYS" }, + { "DAC", NULL, "CLK_DSP" }, + { "DAC", NULL, "AIF" }, + + { "Mixer", "IN1 Switch", "IN1" }, + { "Mixer", "IN2 Switch", "IN2" }, + { "Mixer", "Playback Switch", "DAC" }, + + { "LINEOUT PGA", NULL, "Mixer" }, + { "LINEOUT PGA", NULL, "TOCLK" }, + { "LINEOUT PGA", NULL, "CLK_SYS" }, + + { "LINEOUT", NULL, "LINEOUT PGA" }, + + { "Speaker PGA", NULL, "Mixer" }, + { "Speaker PGA", NULL, "TOCLK" }, + { "Speaker PGA", NULL, "CLK_SYS" }, + + { "Speaker", NULL, "Speaker PGA" }, + { "Speaker", NULL, "TSENSE" }, + + { "SPKN", NULL, "Speaker" }, + { "SPKP", NULL, "Speaker" }, +}; + +static int wm9081_set_bias_level(struct snd_soc_codec *codec, + enum snd_soc_bias_level level) +{ + struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec); + + switch (level) { + case SND_SOC_BIAS_ON: + break; + + case SND_SOC_BIAS_PREPARE: + /* VMID=2*40k */ + snd_soc_update_bits(codec, WM9081_VMID_CONTROL, + WM9081_VMID_SEL_MASK, 0x2); + + /* Normal bias current */ + snd_soc_update_bits(codec, WM9081_BIAS_CONTROL_1, + WM9081_STBY_BIAS_ENA, 0); + break; + + case SND_SOC_BIAS_STANDBY: + /* Initial cold start */ + if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { + regcache_cache_only(wm9081->regmap, false); + regcache_sync(wm9081->regmap); + + /* Disable LINEOUT discharge */ + snd_soc_update_bits(codec, WM9081_ANTI_POP_CONTROL, + WM9081_LINEOUT_DISCH, 0); + + /* Select startup bias source */ + snd_soc_update_bits(codec, WM9081_BIAS_CONTROL_1, + WM9081_BIAS_SRC | WM9081_BIAS_ENA, + WM9081_BIAS_SRC | WM9081_BIAS_ENA); + + /* VMID 2*4k; Soft VMID ramp enable */ + snd_soc_update_bits(codec, WM9081_VMID_CONTROL, + WM9081_VMID_RAMP | + WM9081_VMID_SEL_MASK, + WM9081_VMID_RAMP | 0x6); + + mdelay(100); + + /* Normal bias enable & soft start off */ + snd_soc_update_bits(codec, WM9081_VMID_CONTROL, + WM9081_VMID_RAMP, 0); + + /* Standard bias source */ + snd_soc_update_bits(codec, WM9081_BIAS_CONTROL_1, + WM9081_BIAS_SRC, 0); + } + + /* VMID 2*240k */ + snd_soc_update_bits(codec, WM9081_VMID_CONTROL, + WM9081_VMID_SEL_MASK, 0x04); + + /* Standby bias current on */ + snd_soc_update_bits(codec, WM9081_BIAS_CONTROL_1, + WM9081_STBY_BIAS_ENA, + WM9081_STBY_BIAS_ENA); + break; + + case SND_SOC_BIAS_OFF: + /* Startup bias source and disable bias */ + snd_soc_update_bits(codec, WM9081_BIAS_CONTROL_1, + WM9081_BIAS_SRC | WM9081_BIAS_ENA, + WM9081_BIAS_SRC); + + /* Disable VMID with soft ramping */ + snd_soc_update_bits(codec, WM9081_VMID_CONTROL, + WM9081_VMID_RAMP | WM9081_VMID_SEL_MASK, + WM9081_VMID_RAMP); + + /* Actively discharge LINEOUT */ + snd_soc_update_bits(codec, WM9081_ANTI_POP_CONTROL, + WM9081_LINEOUT_DISCH, + WM9081_LINEOUT_DISCH); + + regcache_cache_only(wm9081->regmap, true); + break; + } + + codec->dapm.bias_level = level; + + return 0; +} + +static int wm9081_set_dai_fmt(struct snd_soc_dai *dai, + unsigned int fmt) +{ + struct snd_soc_codec *codec = dai->codec; + struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec); + unsigned int aif2 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_2); + + aif2 &= ~(WM9081_AIF_BCLK_INV | WM9081_AIF_LRCLK_INV | + WM9081_BCLK_DIR | WM9081_LRCLK_DIR | WM9081_AIF_FMT_MASK); + + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBS_CFS: + wm9081->master = 0; + break; + case SND_SOC_DAIFMT_CBS_CFM: + aif2 |= WM9081_LRCLK_DIR; + wm9081->master = 1; + break; + case SND_SOC_DAIFMT_CBM_CFS: + aif2 |= WM9081_BCLK_DIR; + wm9081->master = 1; + break; + case SND_SOC_DAIFMT_CBM_CFM: + aif2 |= WM9081_LRCLK_DIR | WM9081_BCLK_DIR; + wm9081->master = 1; + break; + default: + return -EINVAL; + } + + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_DSP_B: + aif2 |= WM9081_AIF_LRCLK_INV; + case SND_SOC_DAIFMT_DSP_A: + aif2 |= 0x3; + break; + case SND_SOC_DAIFMT_I2S: + aif2 |= 0x2; + break; + case SND_SOC_DAIFMT_RIGHT_J: + break; + case SND_SOC_DAIFMT_LEFT_J: + aif2 |= 0x1; + 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: + aif2 |= WM9081_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: + aif2 |= WM9081_AIF_BCLK_INV | WM9081_AIF_LRCLK_INV; + break; + case SND_SOC_DAIFMT_IB_NF: + aif2 |= WM9081_AIF_BCLK_INV; + break; + case SND_SOC_DAIFMT_NB_IF: + aif2 |= WM9081_AIF_LRCLK_INV; + break; + default: + return -EINVAL; + } + break; + default: + return -EINVAL; + } + + snd_soc_write(codec, WM9081_AUDIO_INTERFACE_2, aif2); + + return 0; +} + +static int wm9081_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 wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec); + int ret, i, best, best_val, cur_val; + unsigned int clk_ctrl2, aif1, aif2, aif3, aif4; + + clk_ctrl2 = snd_soc_read(codec, WM9081_CLOCK_CONTROL_2); + clk_ctrl2 &= ~(WM9081_CLK_SYS_RATE_MASK | WM9081_SAMPLE_RATE_MASK); + + aif1 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_1); + + aif2 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_2); + aif2 &= ~WM9081_AIF_WL_MASK; + + aif3 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_3); + aif3 &= ~WM9081_BCLK_DIV_MASK; + + aif4 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_4); + aif4 &= ~WM9081_LRCLK_RATE_MASK; + + wm9081->fs = params_rate(params); + + if (wm9081->tdm_width) { + /* If TDM is set up then that fixes our BCLK. */ + int slots = ((aif1 & WM9081_AIFDAC_TDM_MODE_MASK) >> + WM9081_AIFDAC_TDM_MODE_SHIFT) + 1; + + wm9081->bclk = wm9081->fs * wm9081->tdm_width * slots; + } else { + /* Otherwise work out a BCLK from the sample size */ + wm9081->bclk = 2 * wm9081->fs; + + switch (params_width(params)) { + case 16: + wm9081->bclk *= 16; + break; + case 20: + wm9081->bclk *= 20; + aif2 |= 0x4; + break; + case 24: + wm9081->bclk *= 24; + aif2 |= 0x8; + break; + case 32: + wm9081->bclk *= 32; + aif2 |= 0xc; + break; + default: + return -EINVAL; + } + } + + dev_dbg(codec->dev, "Target BCLK is %dHz\n", wm9081->bclk); + + ret = configure_clock(codec); + if (ret != 0) + return ret; + + /* Select nearest CLK_SYS_RATE */ + best = 0; + best_val = abs((wm9081->sysclk_rate / clk_sys_rates[0].ratio) + - wm9081->fs); + for (i = 1; i < ARRAY_SIZE(clk_sys_rates); i++) { + cur_val = abs((wm9081->sysclk_rate / + clk_sys_rates[i].ratio) - wm9081->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); + clk_ctrl2 |= (clk_sys_rates[best].clk_sys_rate + << WM9081_CLK_SYS_RATE_SHIFT); + + /* SAMPLE_RATE */ + best = 0; + best_val = abs(wm9081->fs - sample_rates[0].rate); + for (i = 1; i < ARRAY_SIZE(sample_rates); i++) { + /* Closest match */ + cur_val = abs(wm9081->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); + clk_ctrl2 |= (sample_rates[best].sample_rate + << WM9081_SAMPLE_RATE_SHIFT); + + /* BCLK_DIV */ + best = 0; + best_val = INT_MAX; + for (i = 0; i < ARRAY_SIZE(bclk_divs); i++) { + cur_val = ((wm9081->sysclk_rate * 10) / bclk_divs[i].div) + - wm9081->bclk; + if (cur_val < 0) /* Table is sorted */ + break; + if (cur_val < best_val) { + best = i; + best_val = cur_val; + } + } + wm9081->bclk = (wm9081->sysclk_rate * 10) / bclk_divs[best].div; + dev_dbg(codec->dev, "Selected BCLK_DIV of %d for %dHz BCLK\n", + bclk_divs[best].div, wm9081->bclk); + aif3 |= bclk_divs[best].bclk_div; + + /* LRCLK is a simple fraction of BCLK */ + dev_dbg(codec->dev, "LRCLK_RATE is %d\n", wm9081->bclk / wm9081->fs); + aif4 |= wm9081->bclk / wm9081->fs; + + /* Apply a ReTune Mobile configuration if it's in use */ + if (wm9081->pdata.num_retune_configs) { + struct wm9081_pdata *pdata = &wm9081->pdata; + struct wm9081_retune_mobile_setting *s; + int eq1; + + best = 0; + best_val = abs(pdata->retune_configs[0].rate - wm9081->fs); + for (i = 0; i < pdata->num_retune_configs; i++) { + cur_val = abs(pdata->retune_configs[i].rate - + wm9081->fs); + if (cur_val < best_val) { + best_val = cur_val; + best = i; + } + } + s = &pdata->retune_configs[best]; + + dev_dbg(codec->dev, "ReTune Mobile %s tuned for %dHz\n", + s->name, s->rate); + + /* If the EQ is enabled then disable it while we write out */ + eq1 = snd_soc_read(codec, WM9081_EQ_1) & WM9081_EQ_ENA; + if (eq1 & WM9081_EQ_ENA) + snd_soc_write(codec, WM9081_EQ_1, 0); + + /* Write out the other values */ + for (i = 1; i < ARRAY_SIZE(s->config); i++) + snd_soc_write(codec, WM9081_EQ_1 + i, s->config[i]); + + eq1 |= (s->config[0] & ~WM9081_EQ_ENA); + snd_soc_write(codec, WM9081_EQ_1, eq1); + } + + snd_soc_write(codec, WM9081_CLOCK_CONTROL_2, clk_ctrl2); + snd_soc_write(codec, WM9081_AUDIO_INTERFACE_2, aif2); + snd_soc_write(codec, WM9081_AUDIO_INTERFACE_3, aif3); + snd_soc_write(codec, WM9081_AUDIO_INTERFACE_4, aif4); + + return 0; +} + +static int wm9081_digital_mute(struct snd_soc_dai *codec_dai, int mute) +{ + struct snd_soc_codec *codec = codec_dai->codec; + unsigned int reg; + + reg = snd_soc_read(codec, WM9081_DAC_DIGITAL_2); + + if (mute) + reg |= WM9081_DAC_MUTE; + else + reg &= ~WM9081_DAC_MUTE; + + snd_soc_write(codec, WM9081_DAC_DIGITAL_2, reg); + + return 0; +} + +static int wm9081_set_sysclk(struct snd_soc_codec *codec, int clk_id, + int source, unsigned int freq, int dir) +{ + struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec); + + switch (clk_id) { + case WM9081_SYSCLK_MCLK: + case WM9081_SYSCLK_FLL_MCLK: + wm9081->sysclk_source = clk_id; + wm9081->mclk_rate = freq; + break; + + default: + return -EINVAL; + } + + return 0; +} + +static int wm9081_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 wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec); + unsigned int aif1 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_1); + + aif1 &= ~(WM9081_AIFDAC_TDM_SLOT_MASK | WM9081_AIFDAC_TDM_MODE_MASK); + + if (slots < 0 || slots > 4) + return -EINVAL; + + wm9081->tdm_width = slot_width; + + if (slots == 0) + slots = 1; + + aif1 |= (slots - 1) << WM9081_AIFDAC_TDM_MODE_SHIFT; + + switch (rx_mask) { + case 1: + break; + case 2: + aif1 |= 0x10; + break; + case 4: + aif1 |= 0x20; + break; + case 8: + aif1 |= 0x30; + break; + default: + return -EINVAL; + } + + snd_soc_write(codec, WM9081_AUDIO_INTERFACE_1, aif1); + + return 0; +} + +#define WM9081_RATES SNDRV_PCM_RATE_8000_96000 + +#define WM9081_FORMATS \ + (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ + SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) + +static const struct snd_soc_dai_ops wm9081_dai_ops = { + .hw_params = wm9081_hw_params, + .set_fmt = wm9081_set_dai_fmt, + .digital_mute = wm9081_digital_mute, + .set_tdm_slot = wm9081_set_tdm_slot, +}; + +/* We report two channels because the CODEC processes a stereo signal, even + * though it is only capable of handling a mono output. + */ +static struct snd_soc_dai_driver wm9081_dai = { + .name = "wm9081-hifi", + .playback = { + .stream_name = "AIF", + .channels_min = 1, + .channels_max = 2, + .rates = WM9081_RATES, + .formats = WM9081_FORMATS, + }, + .ops = &wm9081_dai_ops, +}; + +static int wm9081_probe(struct snd_soc_codec *codec) +{ + struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec); + + /* Enable zero cross by default */ + snd_soc_update_bits(codec, WM9081_ANALOGUE_LINEOUT, + WM9081_LINEOUTZC, WM9081_LINEOUTZC); + snd_soc_update_bits(codec, WM9081_ANALOGUE_SPEAKER_PGA, + WM9081_SPKPGAZC, WM9081_SPKPGAZC); + + if (!wm9081->pdata.num_retune_configs) { + dev_dbg(codec->dev, + "No ReTune Mobile data, using normal EQ\n"); + snd_soc_add_codec_controls(codec, wm9081_eq_controls, + ARRAY_SIZE(wm9081_eq_controls)); + } + + return 0; +} + +static struct snd_soc_codec_driver soc_codec_dev_wm9081 = { + .probe = wm9081_probe, + + .set_sysclk = wm9081_set_sysclk, + .set_bias_level = wm9081_set_bias_level, + + .idle_bias_off = true, + + .controls = wm9081_snd_controls, + .num_controls = ARRAY_SIZE(wm9081_snd_controls), + .dapm_widgets = wm9081_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(wm9081_dapm_widgets), + .dapm_routes = wm9081_audio_paths, + .num_dapm_routes = ARRAY_SIZE(wm9081_audio_paths), +}; + +static const struct regmap_config wm9081_regmap = { + .reg_bits = 8, + .val_bits = 16, + + .max_register = WM9081_MAX_REGISTER, + .reg_defaults = wm9081_reg, + .num_reg_defaults = ARRAY_SIZE(wm9081_reg), + .volatile_reg = wm9081_volatile_register, + .readable_reg = wm9081_readable_register, + .cache_type = REGCACHE_RBTREE, +}; + +#if IS_ENABLED(CONFIG_I2C) +static int wm9081_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct wm9081_priv *wm9081; + unsigned int reg; + int ret; + + wm9081 = devm_kzalloc(&i2c->dev, sizeof(struct wm9081_priv), + GFP_KERNEL); + if (wm9081 == NULL) + return -ENOMEM; + + i2c_set_clientdata(i2c, wm9081); + + wm9081->regmap = devm_regmap_init_i2c(i2c, &wm9081_regmap); + if (IS_ERR(wm9081->regmap)) { + ret = PTR_ERR(wm9081->regmap); + dev_err(&i2c->dev, "regmap_init() failed: %d\n", ret); + return ret; + } + + ret = regmap_read(wm9081->regmap, WM9081_SOFTWARE_RESET, ®); + if (ret != 0) { + dev_err(&i2c->dev, "Failed to read chip ID: %d\n", ret); + return ret; + } + if (reg != 0x9081) { + dev_err(&i2c->dev, "Device is not a WM9081: ID=0x%x\n", reg); + return -EINVAL; + } + + ret = wm9081_reset(wm9081->regmap); + if (ret < 0) { + dev_err(&i2c->dev, "Failed to issue reset\n"); + return ret; + } + + if (dev_get_platdata(&i2c->dev)) + memcpy(&wm9081->pdata, dev_get_platdata(&i2c->dev), + sizeof(wm9081->pdata)); + + reg = 0; + if (wm9081->pdata.irq_high) + reg |= WM9081_IRQ_POL; + if (!wm9081->pdata.irq_cmos) + reg |= WM9081_IRQ_OP_CTRL; + regmap_update_bits(wm9081->regmap, WM9081_INTERRUPT_CONTROL, + WM9081_IRQ_POL | WM9081_IRQ_OP_CTRL, reg); + + regcache_cache_only(wm9081->regmap, true); + + ret = snd_soc_register_codec(&i2c->dev, + &soc_codec_dev_wm9081, &wm9081_dai, 1); + if (ret < 0) + return ret; + + return 0; +} + +static int wm9081_i2c_remove(struct i2c_client *client) +{ + snd_soc_unregister_codec(&client->dev); + return 0; +} + +static const struct i2c_device_id wm9081_i2c_id[] = { + { "wm9081", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, wm9081_i2c_id); + +static struct i2c_driver wm9081_i2c_driver = { + .driver = { + .name = "wm9081", + .owner = THIS_MODULE, + }, + .probe = wm9081_i2c_probe, + .remove = wm9081_i2c_remove, + .id_table = wm9081_i2c_id, +}; +#endif + +module_i2c_driver(wm9081_i2c_driver); + +MODULE_DESCRIPTION("ASoC WM9081 driver"); +MODULE_AUTHOR("Mark Brown "); +MODULE_LICENSE("GPL"); -- cgit 1.2.3-korg