#define EM_GPIO_0  (1 << 0)
#define EM_GPIO_1  (1 << 1)
#define EM_GPIO_2  (1 << 2)
#define EM_GPIO_3  (1 << 3)
#define EM_GPIO_4  (1 << 4)
#define EM_GPIO_5  (1 << 5)
#define EM_GPIO_6  (1 << 6)
#define EM_GPIO_7  (1 << 7)

#define EM_GPO_0   (1 << 0)
#define EM_GPO_1   (1 << 1)
#define EM_GPO_2   (1 << 2)
#define EM_GPO_3   (1 << 3)

/* em28xx endpoints */
/* 0x82:   (always ?) analog */
#define EM28XX_EP_AUDIO         0x83
/* 0x84:   digital or analog */

/* em2800 registers */
#define EM2800_R08_AUDIOSRC 0x08

/* em28xx registers */

#define EM28XX_R00_CHIPCFG      0x00

/* em28xx Chip Configuration 0x00 */
#define EM2860_CHIPCFG_VENDOR_AUDIO             0x80
#define EM2860_CHIPCFG_I2S_VOLUME_CAPABLE       0x40
#define EM2820_CHIPCFG_I2S_3_SAMPRATES          0x30
#define EM2860_CHIPCFG_I2S_5_SAMPRATES          0x30
#define EM2820_CHIPCFG_I2S_1_SAMPRATE           0x20
#define EM2860_CHIPCFG_I2S_3_SAMPRATES          0x20
#define EM28XX_CHIPCFG_AC97                     0x10
#define EM28XX_CHIPCFG_AUDIOMASK                0x30

#define EM28XX_R01_CHIPCFG2     0x01

/* em28xx Chip Configuration 2 0x01 */
#define EM28XX_CHIPCFG2_TS_PRESENT              0x10
#define EM28XX_CHIPCFG2_TS_REQ_INTERVAL_MASK    0x0c /* bits 3-2 */
#define EM28XX_CHIPCFG2_TS_REQ_INTERVAL_1MF     0x00
#define EM28XX_CHIPCFG2_TS_REQ_INTERVAL_2MF     0x04
#define EM28XX_CHIPCFG2_TS_REQ_INTERVAL_4MF     0x08
#define EM28XX_CHIPCFG2_TS_REQ_INTERVAL_8MF     0x0c
#define EM28XX_CHIPCFG2_TS_PACKETSIZE_MASK      0x03 /* bits 0-1 */
#define EM28XX_CHIPCFG2_TS_PACKETSIZE_188       0x00
#define EM28XX_CHIPCFG2_TS_PACKETSIZE_376       0x01
#define EM28XX_CHIPCFG2_TS_PACKETSIZE_564       0x02
#define EM28XX_CHIPCFG2_TS_PACKETSIZE_752       0x03


/* GPIO/GPO registers */
#define EM2880_R04_GPO          0x04    /* em2880-em2883 only */
#define EM2820_R08_GPIO_CTRL    0x08    /* em2820-em2873/83 only */
#define EM2820_R09_GPIO_STATE   0x09    /* em2820-em2873/83 only */

#define EM28XX_R06_I2C_CLK      0x06

/* em28xx I2C Clock Register (0x06) */
#define EM28XX_I2C_CLK_ACK_LAST_READ    0x80
#define EM28XX_I2C_CLK_WAIT_ENABLE      0x40
#define EM28XX_I2C_EEPROM_ON_BOARD      0x08
#define EM28XX_I2C_EEPROM_KEY_VALID     0x04
#define EM2874_I2C_SECONDARY_BUS_SELECT 0x04 /* em2874 has two i2c busses */
#define EM28XX_I2C_FREQ_1_5_MHZ         0x03 /* bus frequency (bits [1-0]) */
#define EM28XX_I2C_FREQ_25_KHZ          0x02
#define EM28XX_I2C_FREQ_400_KHZ         0x01
#define EM28XX_I2C_FREQ_100_KHZ         0x00


#define EM28XX_R0A_CHIPID       0x0a
#define EM28XX_R0C_USBSUSP      0x0c
#define   EM28XX_R0C_USBSUSP_SNAPSHOT   0x20 /* 1=button pressed, needs reset */

#define EM28XX_R0E_AUDIOSRC     0x0e
#define EM28XX_R0F_XCLK 0x0f

/* em28xx XCLK Register (0x0f) */
#define EM28XX_XCLK_AUDIO_UNMUTE        0x80 /* otherwise audio muted */
#define EM28XX_XCLK_I2S_MSB_TIMING      0x40 /* otherwise standard timing */
#define EM28XX_XCLK_IR_RC5_MODE         0x20 /* otherwise NEC mode */
#define EM28XX_XCLK_IR_NEC_CHK_PARITY   0x10
#define EM28XX_XCLK_FREQUENCY_30MHZ     0x00 /* Freq. select (bits [3-0]) */
#define EM28XX_XCLK_FREQUENCY_15MHZ     0x01
#define EM28XX_XCLK_FREQUENCY_10MHZ     0x02
#define EM28XX_XCLK_FREQUENCY_7_5MHZ    0x03
#define EM28XX_XCLK_FREQUENCY_6MHZ      0x04
#define EM28XX_XCLK_FREQUENCY_5MHZ      0x05
#define EM28XX_XCLK_FREQUENCY_4_3MHZ    0x06
#define EM28XX_XCLK_FREQUENCY_12MHZ     0x07
#define EM28XX_XCLK_FREQUENCY_20MHZ     0x08
#define EM28XX_XCLK_FREQUENCY_20MHZ_2   0x09
#define EM28XX_XCLK_FREQUENCY_48MHZ     0x0a
#define EM28XX_XCLK_FREQUENCY_24MHZ     0x0b

#define EM28XX_R10_VINMODE      0x10

#define EM28XX_R11_VINCTRL      0x11

/* em28xx Video Input Control Register 0x11 */
#define EM28XX_VINCTRL_VBI_SLICED       0x80
#define EM28XX_VINCTRL_VBI_RAW          0x40
#define EM28XX_VINCTRL_VOUT_MODE_IN     0x20 /* HREF,VREF,VACT in output */
#define EM28XX_VINCTRL_CCIR656_ENABLE   0x10
#define EM28XX_VINCTRL_VBI_16BIT_RAW    0x08 /* otherwise 8-bit raw */
#define EM28XX_VINCTRL_FID_ON_HREF      0x04
#define EM28XX_VINCTRL_DUAL_EDGE_STROBE 0x02
#define EM28XX_VINCTRL_INTERLACED       0x01

#define EM28XX_R12_VINENABLE    0x12    /* */

#define EM28XX_R14_GAMMA        0x14
#define EM28XX_R15_RGAIN        0x15
#define EM28XX_R16_GGAIN        0x16
#define EM28XX_R17_BGAIN        0x17
#define EM28XX_R18_ROFFSET      0x18
#define EM28XX_R19_GOFFSET      0x19
#define EM28XX_R1A_BOFFSET      0x1a

#define EM28XX_R1B_OFLOW        0x1b
#define EM28XX_R1C_HSTART       0x1c
#define EM28XX_R1D_VSTART       0x1d
#define EM28XX_R1E_CWIDTH       0x1e
#define EM28XX_R1F_CHEIGHT      0x1f

#define EM28XX_R20_YGAIN        0x20 /* contrast [0:4]   */
#define   CONTRAST_DEFAULT      0x10

#define EM28XX_R21_YOFFSET      0x21 /* brightness       */     /* signed */
#define   BRIGHTNESS_DEFAULT    0x00

#define EM28XX_R22_UVGAIN       0x22 /* saturation [0:4] */
#define   SATURATION_DEFAULT    0x10

#define EM28XX_R23_UOFFSET      0x23 /* blue balance     */     /* signed */
#define   BLUE_BALANCE_DEFAULT  0x00

#define EM28XX_R24_VOFFSET      0x24 /* red balance      */     /* signed */
#define   RED_BALANCE_DEFAULT   0x00

#define EM28XX_R25_SHARPNESS    0x25 /* sharpness [0:4]  */
#define   SHARPNESS_DEFAULT     0x00

#define EM28XX_R26_COMPR        0x26
#define EM28XX_R27_OUTFMT       0x27

/* em28xx Output Format Register (0x27) */
#define EM28XX_OUTFMT_RGB_8_RGRG        0x00
#define EM28XX_OUTFMT_RGB_8_GRGR        0x01
#define EM28XX_OUTFMT_RGB_8_GBGB        0x02
#define EM28XX_OUTFMT_RGB_8_BGBG        0x03
#define EM28XX_OUTFMT_RGB_16_656        0x04
#define EM28XX_OUTFMT_RGB_8_BAYER       0x08 /* Pattern in Reg 0x10[1-0] */
#define EM28XX_OUTFMT_YUV211            0x10
#define EM28XX_OUTFMT_YUV422_Y0UY1V     0x14
#define EM28XX_OUTFMT_YUV422_Y1UY0V     0x15
#define EM28XX_OUTFMT_YUV411            0x18


#define EM28XX_R28_XMIN 0x28
#define EM28XX_R29_XMAX 0x29
#define EM28XX_R2A_YMIN 0x2a
#define EM28XX_R2B_YMAX 0x2b

#define EM28XX_R30_HSCALELOW    0x30
#define EM28XX_R31_HSCALEHIGH   0x31
#define EM28XX_R32_VSCALELOW    0x32
#define EM28XX_R33_VSCALEHIGH   0x33
#define   EM28XX_HVSCALE_MAX    0x3fff /* => 20% */

#define EM28XX_R34_VBI_START_H  0x34
#define EM28XX_R35_VBI_START_V  0x35
/*
 * NOTE: the EM276x (and EM25xx, EM277x/8x ?) (camera bridges) use these
 * registers for a different unknown purpose.
 *   => register 0x34 is set to capture width / 16
 *   => register 0x35 is set to capture height / 16
 */

#define EM28XX_R36_VBI_WIDTH    0x36
#define EM28XX_R37_VBI_HEIGHT   0x37

#define EM28XX_R40_AC97LSB      0x40
#define EM28XX_R41_AC97MSB      0x41
#define EM28XX_R42_AC97ADDR     0x42
#define EM28XX_R43_AC97BUSY     0x43

#define EM28XX_R45_IR           0x45
        /* 0x45  bit 7    - parity bit
                 bits 6-0 - count
           0x46  IR brand
           0x47  IR data
         */

/* em2874 registers */
#define EM2874_R50_IR_CONFIG    0x50
#define EM2874_R51_IR           0x51
#define EM2874_R5F_TS_ENABLE    0x5f

/* em2874/174/84, em25xx, em276x/7x/8x GPIO registers */
/*
 * NOTE: not all ports are bonded out;
 * Some ports are multiplexed with special function I/O
 */
#define EM2874_R80_GPIO_P0_CTRL    0x80
#define EM2874_R81_GPIO_P1_CTRL    0x81
#define EM2874_R82_GPIO_P2_CTRL    0x82
#define EM2874_R83_GPIO_P3_CTRL    0x83
#define EM2874_R84_GPIO_P0_STATE   0x84
#define EM2874_R85_GPIO_P1_STATE   0x85
#define EM2874_R86_GPIO_P2_STATE   0x86
#define EM2874_R87_GPIO_P3_STATE   0x87

/* em2874 IR config register (0x50) */
#define EM2874_IR_NEC           0x00
#define EM2874_IR_NEC_NO_PARITY 0x01
#define EM2874_IR_RC5           0x04
#define EM2874_IR_RC6_MODE_0    0x08
#define EM2874_IR_RC6_MODE_6A   0x0b

/* em2874 Transport Stream Enable Register (0x5f) */
#define EM2874_TS1_CAPTURE_ENABLE (1 << 0)
#define EM2874_TS1_FILTER_ENABLE  (1 << 1)
#define EM2874_TS1_NULL_DISCARD   (1 << 2)
#define EM2874_TS2_CAPTURE_ENABLE (1 << 4)
#define EM2874_TS2_FILTER_ENABLE  (1 << 5)
#define EM2874_TS2_NULL_DISCARD   (1 << 6)

/* register settings */
#define EM2800_AUDIO_SRC_TUNER  0x0d
#define EM2800_AUDIO_SRC_LINE   0x0c
#define EM28XX_AUDIO_SRC_TUNER  0xc0
#define EM28XX_AUDIO_SRC_LINE   0x80

/* FIXME: Need to be populated with the other chip ID's */
enum em28xx_chip_id {
        CHIP_ID_EM2800 = 7,
        CHIP_ID_EM2710 = 17,
        CHIP_ID_EM2820 = 18,    /* Also used by some em2710 */
        CHIP_ID_EM2840 = 20,
        CHIP_ID_EM2750 = 33,
        CHIP_ID_EM2860 = 34,
        CHIP_ID_EM2870 = 35,
        CHIP_ID_EM2883 = 36,
        CHIP_ID_EM2765 = 54,
        CHIP_ID_EM2874 = 65,
        CHIP_ID_EM2884 = 68,
        CHIP_ID_EM28174 = 113,
        CHIP_ID_EM28178 = 114,
};

/*
 * Registers used by em202
 */

/* EMP202 vendor registers */
#define EM202_EXT_MODEM_CTRL     0x3e
#define EM202_GPIO_CONF          0x4c
#define EM202_GPIO_POLARITY      0x4e
#define EM202_GPIO_STICKY        0x50
#define EM202_GPIO_MASK          0x52
#define EM202_GPIO_STATUS        0x54
#define EM202_SPDIF_OUT_SEL      0x6a
#define EM202_ANTIPOP            0x72
#define EM202_EAPD_GPIO_ACCESS   0x74