/*
 * ALSA SoC TLV320AIC3X codec driver
 *
 * Author:      Vladimir Barinov, <vbarinov@embeddedalley.com>
 * Copyright:   (C) 2007 MontaVista Software, Inc., <source@mvista.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.
 */

#ifndef _AIC3X_H
#define _AIC3X_H

/* AIC3X register space */
#define AIC3X_CACHEREGNUM               103

/* Page select register */
#define AIC3X_PAGE_SELECT               0
/* Software reset register */
#define AIC3X_RESET                     1
/* Codec Sample rate select register */
#define AIC3X_SAMPLE_RATE_SEL_REG       2
/* PLL progrramming register A */
#define AIC3X_PLL_PROGA_REG             3
/* PLL progrramming register B */
#define AIC3X_PLL_PROGB_REG             4
/* PLL progrramming register C */
#define AIC3X_PLL_PROGC_REG             5
/* PLL progrramming register D */
#define AIC3X_PLL_PROGD_REG             6
/* Codec datapath setup register */
#define AIC3X_CODEC_DATAPATH_REG        7
/* Audio serial data interface control register A */
#define AIC3X_ASD_INTF_CTRLA            8
/* Audio serial data interface control register B */
#define AIC3X_ASD_INTF_CTRLB            9
/* Audio serial data interface control register C */
#define AIC3X_ASD_INTF_CTRLC            10
/* Audio overflow status and PLL R value programming register */
#define AIC3X_OVRF_STATUS_AND_PLLR_REG  11
/* Audio codec digital filter control register */
#define AIC3X_CODEC_DFILT_CTRL          12
/* Headset/button press detection register */
#define AIC3X_HEADSET_DETECT_CTRL_A     13
#define AIC3X_HEADSET_DETECT_CTRL_B     14
/* ADC PGA Gain control registers */
#define LADC_VOL                        15
#define RADC_VOL                        16
/* MIC3 control registers */
#define MIC3LR_2_LADC_CTRL              17
#define MIC3LR_2_RADC_CTRL              18
/* Line1 Input control registers */
#define LINE1L_2_LADC_CTRL              19
#define LINE1R_2_LADC_CTRL              21
#define LINE1R_2_RADC_CTRL              22
#define LINE1L_2_RADC_CTRL              24
/* Line2 Input control registers */
#define LINE2L_2_LADC_CTRL              20
#define LINE2R_2_RADC_CTRL              23
/* MICBIAS Control Register */
#define MICBIAS_CTRL                    25

/* AGC Control Registers A, B, C */
#define LAGC_CTRL_A                     26
#define LAGC_CTRL_B                     27
#define LAGC_CTRL_C                     28
#define RAGC_CTRL_A                     29
#define RAGC_CTRL_B                     30
#define RAGC_CTRL_C                     31

/* DAC Power and Left High Power Output control registers */
#define DAC_PWR                         37
#define HPLCOM_CFG                      37
/* Right High Power Output control registers */
#define HPRCOM_CFG                      38
/* DAC Output Switching control registers */
#define DAC_LINE_MUX                    41
/* High Power Output Driver Pop Reduction registers */
#define HPOUT_POP_REDUCTION             42
/* DAC Digital control registers */
#define LDAC_VOL                        43
#define RDAC_VOL                        44
/* Left High Power Output control registers */
#define LINE2L_2_HPLOUT_VOL             45
#define PGAL_2_HPLOUT_VOL               46
#define DACL1_2_HPLOUT_VOL              47
#define LINE2R_2_HPLOUT_VOL             48
#define PGAR_2_HPLOUT_VOL               49
#define DACR1_2_HPLOUT_VOL              50
#define HPLOUT_CTRL                     51
/* Left High Power COM control registers */
#define LINE2L_2_HPLCOM_VOL             52
#define PGAL_2_HPLCOM_VOL               53
#define DACL1_2_HPLCOM_VOL              54
#define LINE2R_2_HPLCOM_VOL             55
#define PGAR_2_HPLCOM_VOL               56
#define DACR1_2_HPLCOM_VOL              57
#define HPLCOM_CTRL                     58
/* Right High Power Output control registers */
#define LINE2L_2_HPROUT_VOL             59
#define PGAL_2_HPROUT_VOL               60
#define DACL1_2_HPROUT_VOL              61
#define LINE2R_2_HPROUT_VOL             62
#define PGAR_2_HPROUT_VOL               63
#define DACR1_2_HPROUT_VOL              64
#define HPROUT_CTRL                     65
/* Right High Power COM control registers */
#define LINE2L_2_HPRCOM_VOL             66
#define PGAL_2_HPRCOM_VOL               67
#define DACL1_2_HPRCOM_VOL              68
#define LINE2R_2_HPRCOM_VOL             69
#define PGAR_2_HPRCOM_VOL               70
#define DACR1_2_HPRCOM_VOL              71
#define HPRCOM_CTRL                     72
/* Mono Line Output Plus/Minus control registers */
#define LINE2L_2_MONOLOPM_VOL           73
#define PGAL_2_MONOLOPM_VOL             74
#define DACL1_2_MONOLOPM_VOL            75
#define LINE2R_2_MONOLOPM_VOL           76
#define PGAR_2_MONOLOPM_VOL             77
#define DACR1_2_MONOLOPM_VOL            78
#define MONOLOPM_CTRL                   79
/* Class-D speaker driver on tlv320aic3007 */
#define CLASSD_CTRL                     73
/* Left Line Output Plus/Minus control registers */
#define LINE2L_2_LLOPM_VOL              80
#define PGAL_2_LLOPM_VOL                81
#define DACL1_2_LLOPM_VOL               82
#define LINE2R_2_LLOPM_VOL              83
#define PGAR_2_LLOPM_VOL                84
#define DACR1_2_LLOPM_VOL               85
#define LLOPM_CTRL                      86
/* Right Line Output Plus/Minus control registers */
#define LINE2L_2_RLOPM_VOL              87
#define PGAL_2_RLOPM_VOL                88
#define DACL1_2_RLOPM_VOL               89
#define LINE2R_2_RLOPM_VOL              90
#define PGAR_2_RLOPM_VOL                91
#define DACR1_2_RLOPM_VOL               92
#define RLOPM_CTRL                      93
/* GPIO/IRQ registers */
#define AIC3X_STICKY_IRQ_FLAGS_REG      96
#define AIC3X_RT_IRQ_FLAGS_REG          97
#define AIC3X_GPIO1_REG                 98
#define AIC3X_GPIO2_REG                 99
#define AIC3X_GPIOA_REG                 100
#define AIC3X_GPIOB_REG                 101
/* Clock generation control register */
#define AIC3X_CLKGEN_CTRL_REG           102

/* Page select register bits */
#define PAGE0_SELECT            0
#define PAGE1_SELECT            1

/* Audio serial data interface control register A bits */
#define BIT_CLK_MASTER          0x80
#define WORD_CLK_MASTER         0x40

/* Codec Datapath setup register 7 */
#define FSREF_44100             (1 << 7)
#define FSREF_48000             (0 << 7)
#define DUAL_RATE_MODE          ((1 << 5) | (1 << 6))
#define LDAC2LCH                (0x1 << 3)
#define RDAC2RCH                (0x1 << 1)

/* PLL registers bitfields */
#define PLLP_SHIFT              0
#define PLLQ_SHIFT              3
#define PLLR_SHIFT              0
#define PLLJ_SHIFT              2
#define PLLD_MSB_SHIFT          0
#define PLLD_LSB_SHIFT          2

/* Clock generation register bits */
#define CODEC_CLKIN_PLLDIV      0
#define CODEC_CLKIN_CLKDIV      1
#define PLL_CLKIN_SHIFT         4
#define MCLK_SOURCE             0x0
#define PLL_CLKDIV_SHIFT        0

/* Software reset register bits */
#define SOFT_RESET              0x80

/* PLL progrramming register A bits */
#define PLL_ENABLE              0x80

/* Route bits */
#define ROUTE_ON                0x80

/* Mute bits */
#define UNMUTE                  0x08
#define MUTE_ON                 0x80

/* Power bits */
#define LADC_PWR_ON             0x04
#define RADC_PWR_ON             0x04
#define LDAC_PWR_ON             0x80
#define RDAC_PWR_ON             0x40
#define HPLOUT_PWR_ON           0x01
#define HPROUT_PWR_ON           0x01
#define HPLCOM_PWR_ON           0x01
#define HPRCOM_PWR_ON           0x01
#define MONOLOPM_PWR_ON         0x01
#define LLOPM_PWR_ON            0x01
#define RLOPM_PWR_ON    0x01

#define INVERT_VOL(val)   (0x7f - val)

/* Default output volume (inverted) */
#define DEFAULT_VOL     INVERT_VOL(0x50)
/* Default input volume */
#define DEFAULT_GAIN    0x20

void aic3x_set_gpio(struct snd_soc_codec *codec, int gpio, int state);
int aic3x_get_gpio(struct snd_soc_codec *codec, int gpio);

/* headset detection / button API */

/* The AIC3x supports detection of stereo headsets (GND + left + right signal)
 * and cellular headsets (GND + speaker output + microphone input).
 * It is recommended to enable MIC bias for this function to work properly.
 * For more information, please refer to the datasheet. */
enum {
        AIC3X_HEADSET_DETECT_OFF        = 0,
        AIC3X_HEADSET_DETECT_STEREO     = 1,
        AIC3X_HEADSET_DETECT_CELLULAR   = 2,
        AIC3X_HEADSET_DETECT_BOTH       = 3
};

enum {
        AIC3X_HEADSET_DEBOUNCE_16MS     = 0,
        AIC3X_HEADSET_DEBOUNCE_32MS     = 1,
        AIC3X_HEADSET_DEBOUNCE_64MS     = 2,
        AIC3X_HEADSET_DEBOUNCE_128MS    = 3,
        AIC3X_HEADSET_DEBOUNCE_256MS    = 4,
        AIC3X_HEADSET_DEBOUNCE_512MS    = 5
};

enum {
        AIC3X_BUTTON_DEBOUNCE_0MS       = 0,
        AIC3X_BUTTON_DEBOUNCE_8MS       = 1,
        AIC3X_BUTTON_DEBOUNCE_16MS      = 2,
        AIC3X_BUTTON_DEBOUNCE_32MS      = 3
};

#define AIC3X_HEADSET_DETECT_ENABLED    0x80
#define AIC3X_HEADSET_DETECT_SHIFT      5
#define AIC3X_HEADSET_DETECT_MASK       3
#define AIC3X_HEADSET_DEBOUNCE_SHIFT    2
#define AIC3X_HEADSET_DEBOUNCE_MASK     7
#define AIC3X_BUTTON_DEBOUNCE_SHIFT     0
#define AIC3X_BUTTON_DEBOUNCE_MASK      3

/* see the enums above for valid parameters to this function */
void aic3x_set_headset_detection(struct snd_soc_codec *codec, int detect,
                                 int headset_debounce, int button_debounce);
int aic3x_headset_detected(struct snd_soc_codec *codec);
int aic3x_button_pressed(struct snd_soc_codec *codec);

#endif /* _AIC3X_H */