diff options
Diffstat (limited to 'sound/soc/codecs/wm9090.c')
| -rw-r--r-- | sound/soc/codecs/wm9090.c | 627 |
1 files changed, 627 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm9090.c b/sound/soc/codecs/wm9090.c new file mode 100644 index 000000000..ef3524c3f --- /dev/null +++ b/sound/soc/codecs/wm9090.c @@ -0,0 +1,627 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * ALSA SoC WM9090 driver + * + * Copyright 2009-12 Wolfson Microelectronics + * + * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> + */ + +#include <linux/module.h> +#include <linux/errno.h> +#include <linux/device.h> +#include <linux/i2c.h> +#include <linux/delay.h> +#include <linux/regmap.h> +#include <linux/slab.h> +#include <sound/initval.h> +#include <sound/soc.h> +#include <sound/tlv.h> +#include <sound/wm9090.h> + +#include "wm9090.h" + +static const struct reg_default wm9090_reg_defaults[] = { + { 1, 0x0006 }, /* R1 - Power Management (1) */ + { 2, 0x6000 }, /* R2 - Power Management (2) */ + { 3, 0x0000 }, /* R3 - Power Management (3) */ + { 6, 0x01C0 }, /* R6 - Clocking 1 */ + { 22, 0x0003 }, /* R22 - IN1 Line Control */ + { 23, 0x0003 }, /* R23 - IN2 Line Control */ + { 24, 0x0083 }, /* R24 - IN1 Line Input A Volume */ + { 25, 0x0083 }, /* R25 - IN1 Line Input B Volume */ + { 26, 0x0083 }, /* R26 - IN2 Line Input A Volume */ + { 27, 0x0083 }, /* R27 - IN2 Line Input B Volume */ + { 28, 0x002D }, /* R28 - Left Output Volume */ + { 29, 0x002D }, /* R29 - Right Output Volume */ + { 34, 0x0100 }, /* R34 - SPKMIXL Attenuation */ + { 35, 0x0010 }, /* R36 - SPKOUT Mixers */ + { 37, 0x0140 }, /* R37 - ClassD3 */ + { 38, 0x0039 }, /* R38 - Speaker Volume Left */ + { 45, 0x0000 }, /* R45 - Output Mixer1 */ + { 46, 0x0000 }, /* R46 - Output Mixer2 */ + { 47, 0x0100 }, /* R47 - Output Mixer3 */ + { 48, 0x0100 }, /* R48 - Output Mixer4 */ + { 54, 0x0000 }, /* R54 - Speaker Mixer */ + { 57, 0x000D }, /* R57 - AntiPOP2 */ + { 70, 0x0000 }, /* R70 - Write Sequencer 0 */ + { 71, 0x0000 }, /* R71 - Write Sequencer 1 */ + { 72, 0x0000 }, /* R72 - Write Sequencer 2 */ + { 73, 0x0000 }, /* R73 - Write Sequencer 3 */ + { 74, 0x0000 }, /* R74 - Write Sequencer 4 */ + { 75, 0x0000 }, /* R75 - Write Sequencer 5 */ + { 76, 0x1F25 }, /* R76 - Charge Pump 1 */ + { 85, 0x054A }, /* R85 - DC Servo 1 */ + { 87, 0x0000 }, /* R87 - DC Servo 3 */ + { 96, 0x0100 }, /* R96 - Analogue HP 0 */ + { 98, 0x8640 }, /* R98 - AGC Control 0 */ + { 99, 0xC000 }, /* R99 - AGC Control 1 */ + { 100, 0x0200 }, /* R100 - AGC Control 2 */ +}; + +/* This struct is used to save the context */ +struct wm9090_priv { + struct wm9090_platform_data pdata; + struct regmap *regmap; +}; + +static bool wm9090_volatile(struct device *dev, unsigned int reg) +{ + switch (reg) { + case WM9090_SOFTWARE_RESET: + case WM9090_DC_SERVO_0: + case WM9090_DC_SERVO_READBACK_0: + case WM9090_DC_SERVO_READBACK_1: + case WM9090_DC_SERVO_READBACK_2: + return true; + + default: + return false; + } +} + +static bool wm9090_readable(struct device *dev, unsigned int reg) +{ + switch (reg) { + case WM9090_SOFTWARE_RESET: + case WM9090_POWER_MANAGEMENT_1: + case WM9090_POWER_MANAGEMENT_2: + case WM9090_POWER_MANAGEMENT_3: + case WM9090_CLOCKING_1: + case WM9090_IN1_LINE_CONTROL: + case WM9090_IN2_LINE_CONTROL: + case WM9090_IN1_LINE_INPUT_A_VOLUME: + case WM9090_IN1_LINE_INPUT_B_VOLUME: + case WM9090_IN2_LINE_INPUT_A_VOLUME: + case WM9090_IN2_LINE_INPUT_B_VOLUME: + case WM9090_LEFT_OUTPUT_VOLUME: + case WM9090_RIGHT_OUTPUT_VOLUME: + case WM9090_SPKMIXL_ATTENUATION: + case WM9090_SPKOUT_MIXERS: + case WM9090_CLASSD3: + case WM9090_SPEAKER_VOLUME_LEFT: + case WM9090_OUTPUT_MIXER1: + case WM9090_OUTPUT_MIXER2: + case WM9090_OUTPUT_MIXER3: + case WM9090_OUTPUT_MIXER4: + case WM9090_SPEAKER_MIXER: + case WM9090_ANTIPOP2: + case WM9090_WRITE_SEQUENCER_0: + case WM9090_WRITE_SEQUENCER_1: + case WM9090_WRITE_SEQUENCER_2: + case WM9090_WRITE_SEQUENCER_3: + case WM9090_WRITE_SEQUENCER_4: + case WM9090_WRITE_SEQUENCER_5: + case WM9090_CHARGE_PUMP_1: + case WM9090_DC_SERVO_0: + case WM9090_DC_SERVO_1: + case WM9090_DC_SERVO_3: + case WM9090_DC_SERVO_READBACK_0: + case WM9090_DC_SERVO_READBACK_1: + case WM9090_DC_SERVO_READBACK_2: + case WM9090_ANALOGUE_HP_0: + case WM9090_AGC_CONTROL_0: + case WM9090_AGC_CONTROL_1: + case WM9090_AGC_CONTROL_2: + return true; + + default: + return false; + } +} + +static void wait_for_dc_servo(struct snd_soc_component *component) +{ + unsigned int reg; + int count = 0; + + dev_dbg(component->dev, "Waiting for DC servo...\n"); + do { + count++; + msleep(1); + reg = snd_soc_component_read(component, WM9090_DC_SERVO_READBACK_0); + dev_dbg(component->dev, "DC servo status: %x\n", reg); + } while ((reg & WM9090_DCS_CAL_COMPLETE_MASK) + != WM9090_DCS_CAL_COMPLETE_MASK && count < 1000); + + if ((reg & WM9090_DCS_CAL_COMPLETE_MASK) + != WM9090_DCS_CAL_COMPLETE_MASK) + dev_err(component->dev, "Timed out waiting for DC Servo\n"); +} + +static const DECLARE_TLV_DB_RANGE(in_tlv, + 0, 0, TLV_DB_SCALE_ITEM(-600, 0, 0), + 1, 3, TLV_DB_SCALE_ITEM(-350, 350, 0), + 4, 6, TLV_DB_SCALE_ITEM(600, 600, 0) +); +static const DECLARE_TLV_DB_RANGE(mix_tlv, + 0, 2, TLV_DB_SCALE_ITEM(-1200, 300, 0), + 3, 3, TLV_DB_SCALE_ITEM(0, 0, 0) +); +static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0); +static const DECLARE_TLV_DB_RANGE(spkboost_tlv, + 0, 6, TLV_DB_SCALE_ITEM(0, 150, 0), + 7, 7, TLV_DB_SCALE_ITEM(1200, 0, 0) +); + +static const struct snd_kcontrol_new wm9090_controls[] = { +SOC_SINGLE_TLV("IN1A Volume", WM9090_IN1_LINE_INPUT_A_VOLUME, 0, 6, 0, + in_tlv), +SOC_SINGLE("IN1A Switch", WM9090_IN1_LINE_INPUT_A_VOLUME, 7, 1, 1), +SOC_SINGLE("IN1A ZC Switch", WM9090_IN1_LINE_INPUT_A_VOLUME, 6, 1, 0), + +SOC_SINGLE_TLV("IN2A Volume", WM9090_IN2_LINE_INPUT_A_VOLUME, 0, 6, 0, + in_tlv), +SOC_SINGLE("IN2A Switch", WM9090_IN2_LINE_INPUT_A_VOLUME, 7, 1, 1), +SOC_SINGLE("IN2A ZC Switch", WM9090_IN2_LINE_INPUT_A_VOLUME, 6, 1, 0), + +SOC_SINGLE("MIXOUTL Switch", WM9090_OUTPUT_MIXER3, 8, 1, 1), +SOC_SINGLE_TLV("MIXOUTL IN1A Volume", WM9090_OUTPUT_MIXER3, 6, 3, 1, + mix_tlv), +SOC_SINGLE_TLV("MIXOUTL IN2A Volume", WM9090_OUTPUT_MIXER3, 2, 3, 1, + mix_tlv), + +SOC_SINGLE("MIXOUTR Switch", WM9090_OUTPUT_MIXER4, 8, 1, 1), +SOC_SINGLE_TLV("MIXOUTR IN1A Volume", WM9090_OUTPUT_MIXER4, 6, 3, 1, + mix_tlv), +SOC_SINGLE_TLV("MIXOUTR IN2A Volume", WM9090_OUTPUT_MIXER4, 2, 3, 1, + mix_tlv), + +SOC_SINGLE("SPKMIX Switch", WM9090_SPKMIXL_ATTENUATION, 8, 1, 1), +SOC_SINGLE_TLV("SPKMIX IN1A Volume", WM9090_SPKMIXL_ATTENUATION, 6, 3, 1, + mix_tlv), +SOC_SINGLE_TLV("SPKMIX IN2A Volume", WM9090_SPKMIXL_ATTENUATION, 2, 3, 1, + mix_tlv), + +SOC_DOUBLE_R_TLV("Headphone Volume", WM9090_LEFT_OUTPUT_VOLUME, + WM9090_RIGHT_OUTPUT_VOLUME, 0, 63, 0, out_tlv), +SOC_DOUBLE_R("Headphone Switch", WM9090_LEFT_OUTPUT_VOLUME, + WM9090_RIGHT_OUTPUT_VOLUME, 6, 1, 1), +SOC_DOUBLE_R("Headphone ZC Switch", WM9090_LEFT_OUTPUT_VOLUME, + WM9090_RIGHT_OUTPUT_VOLUME, 7, 1, 0), + +SOC_SINGLE_TLV("Speaker Volume", WM9090_SPEAKER_VOLUME_LEFT, 0, 63, 0, + out_tlv), +SOC_SINGLE("Speaker Switch", WM9090_SPEAKER_VOLUME_LEFT, 6, 1, 1), +SOC_SINGLE("Speaker ZC Switch", WM9090_SPEAKER_VOLUME_LEFT, 7, 1, 0), +SOC_SINGLE_TLV("Speaker Boost Volume", WM9090_CLASSD3, 3, 7, 0, spkboost_tlv), +}; + +static const struct snd_kcontrol_new wm9090_in1_se_controls[] = { +SOC_SINGLE_TLV("IN1B Volume", WM9090_IN1_LINE_INPUT_B_VOLUME, 0, 6, 0, + in_tlv), +SOC_SINGLE("IN1B Switch", WM9090_IN1_LINE_INPUT_B_VOLUME, 7, 1, 1), +SOC_SINGLE("IN1B ZC Switch", WM9090_IN1_LINE_INPUT_B_VOLUME, 6, 1, 0), + +SOC_SINGLE_TLV("SPKMIX IN1B Volume", WM9090_SPKMIXL_ATTENUATION, 4, 3, 1, + mix_tlv), +SOC_SINGLE_TLV("MIXOUTL IN1B Volume", WM9090_OUTPUT_MIXER3, 4, 3, 1, + mix_tlv), +SOC_SINGLE_TLV("MIXOUTR IN1B Volume", WM9090_OUTPUT_MIXER4, 4, 3, 1, + mix_tlv), +}; + +static const struct snd_kcontrol_new wm9090_in2_se_controls[] = { +SOC_SINGLE_TLV("IN2B Volume", WM9090_IN2_LINE_INPUT_B_VOLUME, 0, 6, 0, + in_tlv), +SOC_SINGLE("IN2B Switch", WM9090_IN2_LINE_INPUT_B_VOLUME, 7, 1, 1), +SOC_SINGLE("IN2B ZC Switch", WM9090_IN2_LINE_INPUT_B_VOLUME, 6, 1, 0), + +SOC_SINGLE_TLV("SPKMIX IN2B Volume", WM9090_SPKMIXL_ATTENUATION, 0, 3, 1, + mix_tlv), +SOC_SINGLE_TLV("MIXOUTL IN2B Volume", WM9090_OUTPUT_MIXER3, 0, 3, 1, + mix_tlv), +SOC_SINGLE_TLV("MIXOUTR IN2B Volume", WM9090_OUTPUT_MIXER4, 0, 3, 1, + mix_tlv), +}; + +static int hp_ev(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); + unsigned int reg = snd_soc_component_read(component, WM9090_ANALOGUE_HP_0); + + switch (event) { + case SND_SOC_DAPM_POST_PMU: + snd_soc_component_update_bits(component, WM9090_CHARGE_PUMP_1, + WM9090_CP_ENA, WM9090_CP_ENA); + + msleep(5); + + snd_soc_component_update_bits(component, WM9090_POWER_MANAGEMENT_1, + WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA, + WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA); + + reg |= WM9090_HPOUT1L_DLY | WM9090_HPOUT1R_DLY; + snd_soc_component_write(component, WM9090_ANALOGUE_HP_0, reg); + + /* Start the DC servo. We don't currently use the + * ability to save the state since we don't have full + * control of the analogue paths and they can change + * DC offsets; see the WM8904 driver for an example of + * doing so. + */ + snd_soc_component_write(component, WM9090_DC_SERVO_0, + WM9090_DCS_ENA_CHAN_0 | + WM9090_DCS_ENA_CHAN_1 | + WM9090_DCS_TRIG_STARTUP_1 | + WM9090_DCS_TRIG_STARTUP_0); + wait_for_dc_servo(component); + + reg |= WM9090_HPOUT1R_OUTP | WM9090_HPOUT1R_RMV_SHORT | + WM9090_HPOUT1L_OUTP | WM9090_HPOUT1L_RMV_SHORT; + snd_soc_component_write(component, WM9090_ANALOGUE_HP_0, reg); + break; + + case SND_SOC_DAPM_PRE_PMD: + reg &= ~(WM9090_HPOUT1L_RMV_SHORT | + WM9090_HPOUT1L_DLY | + WM9090_HPOUT1L_OUTP | + WM9090_HPOUT1R_RMV_SHORT | + WM9090_HPOUT1R_DLY | + WM9090_HPOUT1R_OUTP); + + snd_soc_component_write(component, WM9090_ANALOGUE_HP_0, reg); + + snd_soc_component_write(component, WM9090_DC_SERVO_0, 0); + + snd_soc_component_update_bits(component, WM9090_POWER_MANAGEMENT_1, + WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA, + 0); + + snd_soc_component_update_bits(component, WM9090_CHARGE_PUMP_1, + WM9090_CP_ENA, 0); + break; + } + + return 0; +} + +static const struct snd_kcontrol_new spkmix[] = { +SOC_DAPM_SINGLE("IN1A Switch", WM9090_SPEAKER_MIXER, 6, 1, 0), +SOC_DAPM_SINGLE("IN1B Switch", WM9090_SPEAKER_MIXER, 4, 1, 0), +SOC_DAPM_SINGLE("IN2A Switch", WM9090_SPEAKER_MIXER, 2, 1, 0), +SOC_DAPM_SINGLE("IN2B Switch", WM9090_SPEAKER_MIXER, 0, 1, 0), +}; + +static const struct snd_kcontrol_new spkout[] = { +SOC_DAPM_SINGLE("Mixer Switch", WM9090_SPKOUT_MIXERS, 4, 1, 0), +}; + +static const struct snd_kcontrol_new mixoutl[] = { +SOC_DAPM_SINGLE("IN1A Switch", WM9090_OUTPUT_MIXER1, 6, 1, 0), +SOC_DAPM_SINGLE("IN1B Switch", WM9090_OUTPUT_MIXER1, 4, 1, 0), +SOC_DAPM_SINGLE("IN2A Switch", WM9090_OUTPUT_MIXER1, 2, 1, 0), +SOC_DAPM_SINGLE("IN2B Switch", WM9090_OUTPUT_MIXER1, 0, 1, 0), +}; + +static const struct snd_kcontrol_new mixoutr[] = { +SOC_DAPM_SINGLE("IN1A Switch", WM9090_OUTPUT_MIXER2, 6, 1, 0), +SOC_DAPM_SINGLE("IN1B Switch", WM9090_OUTPUT_MIXER2, 4, 1, 0), +SOC_DAPM_SINGLE("IN2A Switch", WM9090_OUTPUT_MIXER2, 2, 1, 0), +SOC_DAPM_SINGLE("IN2B Switch", WM9090_OUTPUT_MIXER2, 0, 1, 0), +}; + +static const struct snd_soc_dapm_widget wm9090_dapm_widgets[] = { +SND_SOC_DAPM_INPUT("IN1+"), +SND_SOC_DAPM_INPUT("IN1-"), +SND_SOC_DAPM_INPUT("IN2+"), +SND_SOC_DAPM_INPUT("IN2-"), + +SND_SOC_DAPM_SUPPLY("OSC", WM9090_POWER_MANAGEMENT_1, 3, 0, NULL, 0), + +SND_SOC_DAPM_PGA("IN1A PGA", WM9090_POWER_MANAGEMENT_2, 7, 0, NULL, 0), +SND_SOC_DAPM_PGA("IN1B PGA", WM9090_POWER_MANAGEMENT_2, 6, 0, NULL, 0), +SND_SOC_DAPM_PGA("IN2A PGA", WM9090_POWER_MANAGEMENT_2, 5, 0, NULL, 0), +SND_SOC_DAPM_PGA("IN2B PGA", WM9090_POWER_MANAGEMENT_2, 4, 0, NULL, 0), + +SND_SOC_DAPM_MIXER("SPKMIX", WM9090_POWER_MANAGEMENT_3, 3, 0, + spkmix, ARRAY_SIZE(spkmix)), +SND_SOC_DAPM_MIXER("MIXOUTL", WM9090_POWER_MANAGEMENT_3, 5, 0, + mixoutl, ARRAY_SIZE(mixoutl)), +SND_SOC_DAPM_MIXER("MIXOUTR", WM9090_POWER_MANAGEMENT_3, 4, 0, + mixoutr, ARRAY_SIZE(mixoutr)), + +SND_SOC_DAPM_PGA_E("HP PGA", SND_SOC_NOPM, 0, 0, NULL, 0, + hp_ev, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), + +SND_SOC_DAPM_PGA("SPKPGA", WM9090_POWER_MANAGEMENT_3, 8, 0, NULL, 0), +SND_SOC_DAPM_MIXER("SPKOUT", WM9090_POWER_MANAGEMENT_1, 12, 0, + spkout, ARRAY_SIZE(spkout)), + +SND_SOC_DAPM_OUTPUT("HPR"), +SND_SOC_DAPM_OUTPUT("HPL"), +SND_SOC_DAPM_OUTPUT("Speaker"), +}; + +static const struct snd_soc_dapm_route audio_map[] = { + { "IN1A PGA", NULL, "IN1+" }, + { "IN2A PGA", NULL, "IN2+" }, + + { "SPKMIX", "IN1A Switch", "IN1A PGA" }, + { "SPKMIX", "IN2A Switch", "IN2A PGA" }, + + { "MIXOUTL", "IN1A Switch", "IN1A PGA" }, + { "MIXOUTL", "IN2A Switch", "IN2A PGA" }, + + { "MIXOUTR", "IN1A Switch", "IN1A PGA" }, + { "MIXOUTR", "IN2A Switch", "IN2A PGA" }, + + { "HP PGA", NULL, "OSC" }, + { "HP PGA", NULL, "MIXOUTL" }, + { "HP PGA", NULL, "MIXOUTR" }, + + { "HPL", NULL, "HP PGA" }, + { "HPR", NULL, "HP PGA" }, + + { "SPKPGA", NULL, "OSC" }, + { "SPKPGA", NULL, "SPKMIX" }, + + { "SPKOUT", "Mixer Switch", "SPKPGA" }, + + { "Speaker", NULL, "SPKOUT" }, +}; + +static const struct snd_soc_dapm_route audio_map_in1_se[] = { + { "IN1B PGA", NULL, "IN1-" }, + + { "SPKMIX", "IN1B Switch", "IN1B PGA" }, + { "MIXOUTL", "IN1B Switch", "IN1B PGA" }, + { "MIXOUTR", "IN1B Switch", "IN1B PGA" }, +}; + +static const struct snd_soc_dapm_route audio_map_in1_diff[] = { + { "IN1A PGA", NULL, "IN1-" }, +}; + +static const struct snd_soc_dapm_route audio_map_in2_se[] = { + { "IN2B PGA", NULL, "IN2-" }, + + { "SPKMIX", "IN2B Switch", "IN2B PGA" }, + { "MIXOUTL", "IN2B Switch", "IN2B PGA" }, + { "MIXOUTR", "IN2B Switch", "IN2B PGA" }, +}; + +static const struct snd_soc_dapm_route audio_map_in2_diff[] = { + { "IN2A PGA", NULL, "IN2-" }, +}; + +static int wm9090_add_controls(struct snd_soc_component *component) +{ + struct wm9090_priv *wm9090 = snd_soc_component_get_drvdata(component); + struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); + int i; + + snd_soc_dapm_new_controls(dapm, wm9090_dapm_widgets, + ARRAY_SIZE(wm9090_dapm_widgets)); + + snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map)); + + snd_soc_add_component_controls(component, wm9090_controls, + ARRAY_SIZE(wm9090_controls)); + + if (wm9090->pdata.lin1_diff) { + snd_soc_dapm_add_routes(dapm, audio_map_in1_diff, + ARRAY_SIZE(audio_map_in1_diff)); + } else { + snd_soc_dapm_add_routes(dapm, audio_map_in1_se, + ARRAY_SIZE(audio_map_in1_se)); + snd_soc_add_component_controls(component, wm9090_in1_se_controls, + ARRAY_SIZE(wm9090_in1_se_controls)); + } + + if (wm9090->pdata.lin2_diff) { + snd_soc_dapm_add_routes(dapm, audio_map_in2_diff, + ARRAY_SIZE(audio_map_in2_diff)); + } else { + snd_soc_dapm_add_routes(dapm, audio_map_in2_se, + ARRAY_SIZE(audio_map_in2_se)); + snd_soc_add_component_controls(component, wm9090_in2_se_controls, + ARRAY_SIZE(wm9090_in2_se_controls)); + } + + if (wm9090->pdata.agc_ena) { + for (i = 0; i < ARRAY_SIZE(wm9090->pdata.agc); i++) + snd_soc_component_write(component, WM9090_AGC_CONTROL_0 + i, + wm9090->pdata.agc[i]); + snd_soc_component_update_bits(component, WM9090_POWER_MANAGEMENT_3, + WM9090_AGC_ENA, WM9090_AGC_ENA); + } else { + snd_soc_component_update_bits(component, WM9090_POWER_MANAGEMENT_3, + WM9090_AGC_ENA, 0); + } + + return 0; + +} + +/* + * The machine driver should call this from their set_bias_level; if there + * isn't one then this can just be set as the set_bias_level function. + */ +static int wm9090_set_bias_level(struct snd_soc_component *component, + enum snd_soc_bias_level level) +{ + struct wm9090_priv *wm9090 = snd_soc_component_get_drvdata(component); + + switch (level) { + case SND_SOC_BIAS_ON: + break; + + case SND_SOC_BIAS_PREPARE: + snd_soc_component_update_bits(component, WM9090_ANTIPOP2, WM9090_VMID_ENA, + WM9090_VMID_ENA); + snd_soc_component_update_bits(component, WM9090_POWER_MANAGEMENT_1, + WM9090_BIAS_ENA | + WM9090_VMID_RES_MASK, + WM9090_BIAS_ENA | + 1 << WM9090_VMID_RES_SHIFT); + msleep(1); /* Probably an overestimate */ + break; + + case SND_SOC_BIAS_STANDBY: + if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) { + /* Restore the register cache */ + regcache_sync(wm9090->regmap); + } + + /* We keep VMID off during standby since the combination of + * ground referenced outputs and class D speaker mean that + * latency is not an issue. + */ + snd_soc_component_update_bits(component, WM9090_POWER_MANAGEMENT_1, + WM9090_BIAS_ENA | WM9090_VMID_RES_MASK, 0); + snd_soc_component_update_bits(component, WM9090_ANTIPOP2, + WM9090_VMID_ENA, 0); + break; + + case SND_SOC_BIAS_OFF: + break; + } + + return 0; +} + +static int wm9090_probe(struct snd_soc_component *component) +{ + /* Configure some defaults; they will be written out when we + * bring the bias up. + */ + snd_soc_component_update_bits(component, WM9090_IN1_LINE_INPUT_A_VOLUME, + WM9090_IN1_VU | WM9090_IN1A_ZC, + WM9090_IN1_VU | WM9090_IN1A_ZC); + snd_soc_component_update_bits(component, WM9090_IN1_LINE_INPUT_B_VOLUME, + WM9090_IN1_VU | WM9090_IN1B_ZC, + WM9090_IN1_VU | WM9090_IN1B_ZC); + snd_soc_component_update_bits(component, WM9090_IN2_LINE_INPUT_A_VOLUME, + WM9090_IN2_VU | WM9090_IN2A_ZC, + WM9090_IN2_VU | WM9090_IN2A_ZC); + snd_soc_component_update_bits(component, WM9090_IN2_LINE_INPUT_B_VOLUME, + WM9090_IN2_VU | WM9090_IN2B_ZC, + WM9090_IN2_VU | WM9090_IN2B_ZC); + snd_soc_component_update_bits(component, WM9090_SPEAKER_VOLUME_LEFT, + WM9090_SPKOUT_VU | WM9090_SPKOUTL_ZC, + WM9090_SPKOUT_VU | WM9090_SPKOUTL_ZC); + snd_soc_component_update_bits(component, WM9090_LEFT_OUTPUT_VOLUME, + WM9090_HPOUT1_VU | WM9090_HPOUT1L_ZC, + WM9090_HPOUT1_VU | WM9090_HPOUT1L_ZC); + snd_soc_component_update_bits(component, WM9090_RIGHT_OUTPUT_VOLUME, + WM9090_HPOUT1_VU | WM9090_HPOUT1R_ZC, + WM9090_HPOUT1_VU | WM9090_HPOUT1R_ZC); + + snd_soc_component_update_bits(component, WM9090_CLOCKING_1, + WM9090_TOCLK_ENA, WM9090_TOCLK_ENA); + + wm9090_add_controls(component); + + return 0; +} + +static const struct snd_soc_component_driver soc_component_dev_wm9090 = { + .probe = wm9090_probe, + .set_bias_level = wm9090_set_bias_level, + .suspend_bias_off = 1, + .idle_bias_on = 1, + .use_pmdown_time = 1, +}; + +static const struct regmap_config wm9090_regmap = { + .reg_bits = 8, + .val_bits = 16, + + .max_register = WM9090_MAX_REGISTER, + .volatile_reg = wm9090_volatile, + .readable_reg = wm9090_readable, + + .cache_type = REGCACHE_RBTREE, + .reg_defaults = wm9090_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(wm9090_reg_defaults), +}; + + +static int wm9090_i2c_probe(struct i2c_client *i2c) +{ + struct wm9090_priv *wm9090; + unsigned int reg; + int ret; + + wm9090 = devm_kzalloc(&i2c->dev, sizeof(*wm9090), GFP_KERNEL); + if (!wm9090) + return -ENOMEM; + + wm9090->regmap = devm_regmap_init_i2c(i2c, &wm9090_regmap); + if (IS_ERR(wm9090->regmap)) { + ret = PTR_ERR(wm9090->regmap); + dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret); + return ret; + } + + ret = regmap_read(wm9090->regmap, WM9090_SOFTWARE_RESET, ®); + if (ret < 0) + return ret; + + if (reg != 0x9093) { + dev_err(&i2c->dev, "Device is not a WM9090, ID=%x\n", reg); + return -ENODEV; + } + + ret = regmap_write(wm9090->regmap, WM9090_SOFTWARE_RESET, 0); + if (ret < 0) + return ret; + + if (i2c->dev.platform_data) + memcpy(&wm9090->pdata, i2c->dev.platform_data, + sizeof(wm9090->pdata)); + + i2c_set_clientdata(i2c, wm9090); + + ret = devm_snd_soc_register_component(&i2c->dev, + &soc_component_dev_wm9090, NULL, 0); + if (ret != 0) { + dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret); + return ret; + } + + return 0; +} + +static const struct i2c_device_id wm9090_id[] = { + { "wm9090", 0 }, + { "wm9093", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, wm9090_id); + +static struct i2c_driver wm9090_i2c_driver = { + .driver = { + .name = "wm9090", + }, + .probe_new = wm9090_i2c_probe, + .id_table = wm9090_id, +}; + +module_i2c_driver(wm9090_i2c_driver); + +MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); +MODULE_DESCRIPTION("WM9090 ASoC driver"); +MODULE_LICENSE("GPL"); |