// 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 , 0 x0006 }, /* R1 - Power Management (1) */
{ 2 , 0 x6000 }, /* R2 - Power Management (2) */
{ 3 , 0 x0000 }, /* R3 - Power Management (3) */
{ 6 , 0 x01C0 }, /* R6 - Clocking 1 */
{ 22 , 0 x0003 }, /* R22 - IN1 Line Control */
{ 23 , 0 x0003 }, /* R23 - IN2 Line Control */
{ 24 , 0 x0083 }, /* R24 - IN1 Line Input A Volume */
{ 25 , 0 x0083 }, /* R25 - IN1 Line Input B Volume */
{ 26 , 0 x0083 }, /* R26 - IN2 Line Input A Volume */
{ 27 , 0 x0083 }, /* R27 - IN2 Line Input B Volume */
{ 28 , 0 x002D }, /* R28 - Left Output Volume */
{ 29 , 0 x002D }, /* R29 - Right Output Volume */
{ 34 , 0 x0100 }, /* R34 - SPKMIXL Attenuation */
{ 35 , 0 x0010 }, /* R36 - SPKOUT Mixers */
{ 37 , 0 x0140 }, /* R37 - ClassD3 */
{ 38 , 0 x0039 }, /* R38 - Speaker Volume Left */
{ 45 , 0 x0000 }, /* R45 - Output Mixer1 */
{ 46 , 0 x0000 }, /* R46 - Output Mixer2 */
{ 47 , 0 x0100 }, /* R47 - Output Mixer3 */
{ 48 , 0 x0100 }, /* R48 - Output Mixer4 */
{ 54 , 0 x0000 }, /* R54 - Speaker Mixer */
{ 57 , 0 x000D }, /* R57 - AntiPOP2 */
{ 70 , 0 x0000 }, /* R70 - Write Sequencer 0 */
{ 71 , 0 x0000 }, /* R71 - Write Sequencer 1 */
{ 72 , 0 x0000 }, /* R72 - Write Sequencer 2 */
{ 73 , 0 x0000 }, /* R73 - Write Sequencer 3 */
{ 74 , 0 x0000 }, /* R74 - Write Sequencer 4 */
{ 75 , 0 x0000 }, /* R75 - Write Sequencer 5 */
{ 76 , 0 x1F25 }, /* R76 - Charge Pump 1 */
{ 85 , 0 x054A }, /* R85 - DC Servo 1 */
{ 87 , 0 x0000 }, /* R87 - DC Servo 3 */
{ 96 , 0 x0100 }, /* R96 - Analogue HP 0 */
{ 98 , 0 x8640 }, /* R98 - AGC Control 0 */
{ 99 , 0 xC000 }, /* R99 - AGC Control 1 */
{ 100 , 0 x0200 }, /* 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_MAPLE,
.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 != 0 x9093) {
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" },
{ "wm9093" },
{ }
};
MODULE_DEVICE_TABLE(i2c, wm9090_id);
static struct i2c_driver wm9090_i2c_driver = {
.driver = {
.name = "wm9090" ,
},
.probe = 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" );
Messung V0.5 in Prozent C=95 H=94 G=94
¤ Dauer der Verarbeitung: 0.7 Sekunden
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