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Commit 39b8eab7 authored by Mark Brown's avatar Mark Brown
Browse files

ASoC: Add WM9090 amplifier driver 



The WM9090 is a high performance low power audio subsystem, including
headphone and class D speaker drivers.

Note that this driver is a standalone CODEC driver and so is only
immediately suitable for use with the WM9090 as a standalone sound card
taking line inputs, or with a DAC with no software control.  The pending
ASoC multi-CODEC support will expand the range of systems that can use
the driver, or system-specific adaptations can be made.

Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: default avatarLiam Girdwood <lrg@slimlogic.co.uk>
parent dde3a7e9

include/sound/wm9090.h

0 → 100644
+28 −0
Original line number Diff line number Diff line 
/*

 * linux/sound/wm9090.h -- Platform data for WM9090

 *

 * Copyright 2009, 2010 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.

 */



#ifndef __LINUX_SND_WM9090_H

#define __LINUX_SND_WM9090_H



struct wm9090_platform_data {

	/* Line inputs 1 & 2 can optionally be differential */

	unsigned int lin1_diff:1;

	unsigned int lin2_diff:1;



	/* AGC configuration.  This is intended to protect the speaker

	 * against overdriving and will therefore depend on the

	 * hardware setup with incorrect runtime configuration

	 * potentially causing hardware damage.

	 */

	unsigned int agc_ena:1;

	u16 agc[3];

};



#endif

sound/soc/codecs/Kconfig

+4 −0
Original line number Diff line number Diff line
@@ -66,6 +66,7 @@ config SND_SOC_ALL_CODECS 
	select SND_SOC_WM8993 if I2C

	select SND_SOC_WM8994 if MFD_WM8994

	select SND_SOC_WM9081 if I2C

	select SND_SOC_WM9090 if I2C

	select SND_SOC_WM9705 if SND_SOC_AC97_BUS

	select SND_SOC_WM9712 if SND_SOC_AC97_BUS

	select SND_SOC_WM9713 if SND_SOC_AC97_BUS
@@ -277,3 +278,6 @@ config SND_SOC_TPA6130A2 


config SND_SOC_WM2000

	tristate



config SND_SOC_WM9090

	tristate

sound/soc/codecs/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -61,6 +61,7 @@ snd-soc-wm-hubs-objs := wm_hubs.o 
snd-soc-max9877-objs := max9877.o

snd-soc-tpa6130a2-objs := tpa6130a2.o

snd-soc-wm2000-objs := wm2000.o

snd-soc-wm9090-objs := wm9090.o



obj-$(CONFIG_SND_SOC_AC97_CODEC)	+= snd-soc-ac97.o

obj-$(CONFIG_SND_SOC_AD1836)	+= snd-soc-ad1836.o
@@ -125,3 +126,4 @@ obj-$(CONFIG_SND_SOC_WM_HUBS) += snd-soc-wm-hubs.o 
obj-$(CONFIG_SND_SOC_MAX9877)	+= snd-soc-max9877.o

obj-$(CONFIG_SND_SOC_TPA6130A2)	+= snd-soc-tpa6130a2.o

obj-$(CONFIG_SND_SOC_WM2000)	+= snd-soc-wm2000.o

obj-$(CONFIG_SND_SOC_WM9090)	+= snd-soc-wm9090.o

sound/soc/codecs/wm9090.c

0 → 100644
+773 −0
Original line number Diff line number Diff line 
/*

 * ALSA SoC WM9090 driver

 *

 * Copyright 2009, 2010 Wolfson Microelectronics

 *

 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>

 *

 * 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.

 *

 * This program is distributed in the hope that it will be useful, but

 * WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA

 * 02110-1301 USA

 */



#include <linux/module.h>

#include <linux/errno.h>

#include <linux/device.h>

#include <linux/i2c.h>

#include <linux/delay.h>

#include <linux/slab.h>

#include <sound/initval.h>

#include <sound/soc.h>

#include <sound/soc-dapm.h>

#include <sound/tlv.h>

#include <sound/wm9090.h>



#include "wm9090.h"



static struct snd_soc_codec *wm9090_codec;



static const u16 wm9090_reg_defaults[] = {

	0x9093,     /* R0   - Software Reset */

	0x0006,     /* R1   - Power Management (1) */

	0x6000,     /* R2   - Power Management (2) */

	0x0000,     /* R3   - Power Management (3) */

	0x0000,     /* R4 */

	0x0000,     /* R5 */

	0x01C0,     /* R6   - Clocking 1 */

	0x0000,     /* R7 */

	0x0000,     /* R8 */

	0x0000,     /* R9 */

	0x0000,     /* R10 */

	0x0000,     /* R11 */

	0x0000,     /* R12 */

	0x0000,     /* R13 */

	0x0000,     /* R14 */

	0x0000,     /* R15 */

	0x0000,     /* R16 */

	0x0000,     /* R17 */

	0x0000,     /* R18 */

	0x0000,     /* R19 */

	0x0000,     /* R20 */

	0x0000,     /* R21 */

	0x0003,     /* R22  - IN1 Line Control */

	0x0003,     /* R23  - IN2 Line Control */

	0x0083,     /* R24  - IN1 Line Input A Volume */

	0x0083,     /* R25  - IN1  Line Input B Volume */

	0x0083,     /* R26  - IN2 Line Input A Volume */

	0x0083,     /* R27  - IN2 Line Input B Volume */

	0x002D,     /* R28  - Left Output Volume */

	0x002D,     /* R29  - Right Output Volume */

	0x0000,     /* R30 */

	0x0000,     /* R31 */

	0x0000,     /* R32 */

	0x0000,     /* R33 */

	0x0100,     /* R34  - SPKMIXL Attenuation */

	0x0000,     /* R35 */

	0x0010,     /* R36  - SPKOUT Mixers */

	0x0140,     /* R37  - ClassD3 */

	0x0039,     /* R38  - Speaker Volume Left */

	0x0000,     /* R39 */

	0x0000,     /* R40 */

	0x0000,     /* R41 */

	0x0000,     /* R42 */

	0x0000,     /* R43 */

	0x0000,     /* R44 */

	0x0000,     /* R45  - Output Mixer1 */

	0x0000,     /* R46  - Output Mixer2 */

	0x0100,     /* R47  - Output Mixer3 */

	0x0100,     /* R48  - Output Mixer4 */

	0x0000,     /* R49 */

	0x0000,     /* R50 */

	0x0000,     /* R51 */

	0x0000,     /* R52 */

	0x0000,     /* R53 */

	0x0000,     /* R54  - Speaker Mixer */

	0x0000,     /* R55 */

	0x0000,     /* R56 */

	0x000D,     /* R57  - AntiPOP2 */

	0x0000,     /* R58 */

	0x0000,     /* R59 */

	0x0000,     /* R60 */

	0x0000,     /* R61 */

	0x0000,     /* R62 */

	0x0000,     /* R63 */

	0x0000,     /* R64 */

	0x0000,     /* R65 */

	0x0000,     /* R66 */

	0x0000,     /* R67 */

	0x0000,     /* R68 */

	0x0000,     /* R69 */

	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 */

	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 */

	0x8640,     /* R98  - AGC Control 0 */

	0xC000,     /* R99  - AGC Control 1 */

	0x0200,     /* R100 - AGC Control 2 */

};



/* This struct is used to save the context */

struct wm9090_priv {

	/* We're not really registering as a CODEC since ASoC core

	 * does not yet support multiple CODECs but having the CODEC

	 * structure means we can reuse some of the ASoC core

	 * features.

	 */

	struct snd_soc_codec codec;

	struct mutex mutex;

	u16 reg_cache[WM9090_MAX_REGISTER + 1];

	struct wm9090_platform_data pdata;

};



static int wm9090_volatile(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 1;



	default:

		return 0;

	}

}



static void wait_for_dc_servo(struct snd_soc_codec *codec)

{

	unsigned int reg;

	int count = 0;



	dev_dbg(codec->dev, "Waiting for DC servo...\n");

	do {

		count++;

		msleep(1);

		reg = snd_soc_read(codec, WM9090_DC_SERVO_READBACK_0);

		dev_dbg(codec->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(codec->dev, "Timed out waiting for DC Servo\n");

}



static const unsigned int in_tlv[] = {

	TLV_DB_RANGE_HEAD(6),

	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 unsigned int mix_tlv[] = {

	TLV_DB_RANGE_HEAD(4),

	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 unsigned int spkboost_tlv[] = {

	TLV_DB_RANGE_HEAD(7),

	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_codec *codec = w->codec;

	unsigned int reg = snd_soc_read(codec, WM9090_ANALOGUE_HP_0);



	switch (event) {

	case SND_SOC_DAPM_POST_PMU:

		snd_soc_update_bits(codec, WM9090_CHARGE_PUMP_1,

				    WM9090_CP_ENA, WM9090_CP_ENA);



		msleep(5);



		snd_soc_update_bits(codec, 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_write(codec, 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_write(codec, 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(codec);



		reg |= WM9090_HPOUT1R_OUTP | WM9090_HPOUT1R_RMV_SHORT |

			WM9090_HPOUT1L_OUTP | WM9090_HPOUT1L_RMV_SHORT;

		snd_soc_write(codec, 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_write(codec, WM9090_ANALOGUE_HP_0, reg);



		snd_soc_write(codec, WM9090_DC_SERVO_0, 0);



		snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1,

				    WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA,

				    0);



		snd_soc_update_bits(codec, 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_codec *codec)

{

	struct wm9090_priv *wm9090 = snd_soc_codec_get_drvdata(codec);

	int i;



	snd_soc_dapm_new_controls(codec, wm9090_dapm_widgets,

				  ARRAY_SIZE(wm9090_dapm_widgets));



	snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));



	snd_soc_add_controls(codec, wm9090_controls,

			     ARRAY_SIZE(wm9090_controls));



	if (wm9090->pdata.lin1_diff) {

		snd_soc_dapm_add_routes(codec, audio_map_in1_diff,

					ARRAY_SIZE(audio_map_in1_diff));

	} else {

		snd_soc_dapm_add_routes(codec, audio_map_in1_se,

					ARRAY_SIZE(audio_map_in1_se));

		snd_soc_add_controls(codec, wm9090_in1_se_controls,

				     ARRAY_SIZE(wm9090_in1_se_controls));

	}



	if (wm9090->pdata.lin2_diff) {

		snd_soc_dapm_add_routes(codec, audio_map_in2_diff,

					ARRAY_SIZE(audio_map_in2_diff));

	} else {

		snd_soc_dapm_add_routes(codec, audio_map_in2_se,

					ARRAY_SIZE(audio_map_in2_se));

		snd_soc_add_controls(codec, 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_write(codec, WM9090_AGC_CONTROL_0 + i,

				      wm9090->pdata.agc[i]);

		snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_3,

				    WM9090_AGC_ENA, WM9090_AGC_ENA);

	} else {

		snd_soc_update_bits(codec, 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_codec *codec,

				 enum snd_soc_bias_level level)

{

	u16 *reg_cache = codec->reg_cache;

	int i, ret;



	switch (level) {

	case SND_SOC_BIAS_ON:

		break;



	case SND_SOC_BIAS_PREPARE:

		snd_soc_update_bits(codec, WM9090_ANTIPOP2, WM9090_VMID_ENA,

				    WM9090_VMID_ENA);

		snd_soc_update_bits(codec, 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 (codec->bias_level == SND_SOC_BIAS_OFF) {

			/* Restore the register cache */

			for (i = 1; i < codec->reg_cache_size; i++) {

				if (reg_cache[i] == wm9090_reg_defaults[i])

					continue;

				if (wm9090_volatile(i))

					continue;



				ret = snd_soc_write(codec, i, reg_cache[i]);

				if (ret != 0)

					dev_warn(codec->dev,

						 "Failed to restore register %d: %d\n",

						 i, ret);

			}

		}



		/* 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_update_bits(codec, WM9090_POWER_MANAGEMENT_1,

				    WM9090_BIAS_ENA | WM9090_VMID_RES_MASK, 0);

		snd_soc_update_bits(codec, WM9090_ANTIPOP2,

				    WM9090_VMID_ENA, 0);

		break;



	case SND_SOC_BIAS_OFF:

		break;

	}



	codec->bias_level = level;



	return 0;

}



static int wm9090_probe(struct platform_device *pdev)

{

	struct snd_soc_device *socdev = platform_get_drvdata(pdev);

	struct snd_soc_codec *codec;

	int ret = 0;



	if (wm9090_codec == NULL) {

		dev_err(&pdev->dev, "Codec device not registered\n");

		return -ENODEV;

	}



	socdev->card->codec = wm9090_codec;

	codec = wm9090_codec;



	/* register pcms */

	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);

	if (ret < 0) {

		dev_err(codec->dev, "failed to create pcms: %d\n", ret);

		goto pcm_err;

	}



	wm9090_add_controls(codec);



	return 0;



pcm_err:

	return ret;

}



#ifdef CONFIG_PM

static int wm9090_suspend(struct platform_device *pdev, pm_message_t state)

{

	struct snd_soc_device *socdev = platform_get_drvdata(pdev);

	struct snd_soc_codec *codec = socdev->card->codec;



	wm9090_set_bias_level(codec, SND_SOC_BIAS_OFF);



	return 0;

}



static int wm9090_resume(struct platform_device *pdev)

{

	struct snd_soc_device *socdev = platform_get_drvdata(pdev);

	struct snd_soc_codec *codec = socdev->card->codec;



	wm9090_set_bias_level(codec, SND_SOC_BIAS_STANDBY);



	return 0;

}

#else

#define wm9090_suspend NULL

#define wm9090_resume NULL

#endif



static int wm9090_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_wm9090 = {

	.probe = 	wm9090_probe,

	.remove = 	wm9090_remove,

	.suspend = 	wm9090_suspend,

	.resume =	wm9090_resume,

};

EXPORT_SYMBOL_GPL(soc_codec_dev_wm9090);



static int wm9090_i2c_probe(struct i2c_client *i2c,

			    const struct i2c_device_id *id)

{

	struct wm9090_priv *wm9090;

	struct snd_soc_codec *codec;

	int ret;



	wm9090 = kzalloc(sizeof(*wm9090), GFP_KERNEL);

	if (wm9090 == NULL) {

		dev_err(&i2c->dev, "Can not allocate memory\n");

		return -ENOMEM;

	}

	codec = &wm9090->codec;



	if (i2c->dev.platform_data)

		memcpy(&wm9090->pdata, i2c->dev.platform_data,

		       sizeof(wm9090->pdata));



	wm9090_codec = codec;



	i2c_set_clientdata(i2c, wm9090);



	mutex_init(&codec->mutex);

	INIT_LIST_HEAD(&codec->dapm_widgets);

	INIT_LIST_HEAD(&codec->dapm_paths);



	codec->control_data = i2c;

	snd_soc_codec_set_drvdata(codec, wm9090);

	codec->dev = &i2c->dev;

	codec->name = "WM9090";

	codec->owner = THIS_MODULE;

	codec->bias_level = SND_SOC_BIAS_OFF;

	codec->set_bias_level = wm9090_set_bias_level,

	codec->reg_cache_size = WM9090_MAX_REGISTER + 1;

	codec->reg_cache = &wm9090->reg_cache;

	codec->volatile_register = wm9090_volatile;



	ret = snd_soc_codec_set_cache_io(codec, 8, 16, SND_SOC_I2C);

	if (ret != 0) {

		dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);

		goto err;

	}



	memcpy(&wm9090->reg_cache, wm9090_reg_defaults,

	       sizeof(wm9090->reg_cache));



	ret = snd_soc_read(codec, WM9090_SOFTWARE_RESET);

	if (ret < 0)

		goto err;

	if (ret != wm9090_reg_defaults[WM9090_SOFTWARE_RESET]) {

		dev_err(&i2c->dev, "Device is not a WM9090, ID=%x\n", ret);

		ret = -EINVAL;

		goto err;

	}



	ret = snd_soc_write(codec, WM9090_SOFTWARE_RESET, 0);

	if (ret < 0)

		goto err;



	/* Configure some defaults; they will be written out when we

	 * bring the bias up.

	 */

	wm9090->reg_cache[WM9090_IN1_LINE_INPUT_A_VOLUME] |= WM9090_IN1_VU

		| WM9090_IN1A_ZC;

	wm9090->reg_cache[WM9090_IN1_LINE_INPUT_B_VOLUME] |= WM9090_IN1_VU

		| WM9090_IN1B_ZC;

	wm9090->reg_cache[WM9090_IN2_LINE_INPUT_A_VOLUME] |= WM9090_IN2_VU

		| WM9090_IN2A_ZC;

	wm9090->reg_cache[WM9090_IN2_LINE_INPUT_B_VOLUME] |= WM9090_IN2_VU

		| WM9090_IN2B_ZC;

	wm9090->reg_cache[WM9090_SPEAKER_VOLUME_LEFT] |=

		WM9090_SPKOUT_VU | WM9090_SPKOUTL_ZC;

	wm9090->reg_cache[WM9090_LEFT_OUTPUT_VOLUME] |= 

		WM9090_HPOUT1_VU | WM9090_HPOUT1L_ZC;

	wm9090->reg_cache[WM9090_RIGHT_OUTPUT_VOLUME] |=

		WM9090_HPOUT1_VU | WM9090_HPOUT1R_ZC;



	wm9090->reg_cache[WM9090_CLOCKING_1] |= WM9090_TOCLK_ENA;



	wm9090_set_bias_level(codec, SND_SOC_BIAS_STANDBY);



	ret = snd_soc_register_codec(codec);

	if (ret != 0) {

		dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret);

		goto err_bias;

	}



	return 0;



err_bias:

	wm9090_set_bias_level(codec, SND_SOC_BIAS_OFF);

err:

	kfree(wm9090);

	i2c_set_clientdata(i2c, NULL);

	wm9090_codec = NULL;



	return ret;

}



static int wm9090_i2c_remove(struct i2c_client *i2c)

{

	struct wm9090_priv *wm9090 = i2c_get_clientdata(i2c);

	struct snd_soc_codec *codec = &wm9090->codec;



	snd_soc_unregister_codec(codec);

	wm9090_set_bias_level(codec, SND_SOC_BIAS_OFF);

	kfree(wm9090);

	wm9090_codec = NULL;



	return 0;

}



static const struct i2c_device_id wm9090_id[] = {

	{ "wm9090", 0 },

	{ }

};

MODULE_DEVICE_TABLE(i2c, wm9090_id);



static struct i2c_driver wm9090_i2c_driver = {

	.driver = {

		.name = "wm9090",

		.owner = THIS_MODULE,

	},

	.probe = wm9090_i2c_probe,

	.remove = __devexit_p(wm9090_i2c_remove),

	.id_table = wm9090_id,

};



static int __init wm9090_init(void)

{

	return i2c_add_driver(&wm9090_i2c_driver);

}

module_init(wm9090_init);



static void __exit wm9090_exit(void)

{

	i2c_del_driver(&wm9090_i2c_driver);

}

module_exit(wm9090_exit);



MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");

MODULE_DESCRIPTION("WM9090 ASoC driver");

MODULE_LICENSE("GPL");