/*
 * Analog Devices ADV7511 HDMI transmitter driver
 *
 * Copyright 2012 Analog Devices Inc.
 *
 * Licensed under the GPL-2.
 */

#ifndef __DRM_I2C_ADV7511_H__
#define __DRM_I2C_ADV7511_H__

#include <linux/hdmi.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>

#include <drm/drm_crtc_helper.h>
#include <drm/drm_mipi_dsi.h>

#define ADV7511_REG_CHIP_REVISION               0x00
#define ADV7511_REG_N0                          0x01
#define ADV7511_REG_N1                          0x02
#define ADV7511_REG_N2                          0x03
#define ADV7511_REG_SPDIF_FREQ                  0x04
#define ADV7511_REG_CTS_AUTOMATIC1              0x05
#define ADV7511_REG_CTS_AUTOMATIC2              0x06
#define ADV7511_REG_CTS_MANUAL0                 0x07
#define ADV7511_REG_CTS_MANUAL1                 0x08
#define ADV7511_REG_CTS_MANUAL2                 0x09
#define ADV7511_REG_AUDIO_SOURCE                0x0a
#define ADV7511_REG_AUDIO_CONFIG                0x0b
#define ADV7511_REG_I2S_CONFIG                  0x0c
#define ADV7511_REG_I2S_WIDTH                   0x0d
#define ADV7511_REG_AUDIO_SUB_SRC0              0x0e
#define ADV7511_REG_AUDIO_SUB_SRC1              0x0f
#define ADV7511_REG_AUDIO_SUB_SRC2              0x10
#define ADV7511_REG_AUDIO_SUB_SRC3              0x11
#define ADV7511_REG_AUDIO_CFG1                  0x12
#define ADV7511_REG_AUDIO_CFG2                  0x13
#define ADV7511_REG_AUDIO_CFG3                  0x14
#define ADV7511_REG_I2C_FREQ_ID_CFG             0x15
#define ADV7511_REG_VIDEO_INPUT_CFG1            0x16
#define ADV7511_REG_CSC_UPPER(x)                (0x18 + (x) * 2)
#define ADV7511_REG_CSC_LOWER(x)                (0x19 + (x) * 2)
#define ADV7511_REG_SYNC_DECODER(x)             (0x30 + (x))
#define ADV7511_REG_DE_GENERATOR                (0x35 + (x))
#define ADV7511_REG_PIXEL_REPETITION            0x3b
#define ADV7511_REG_VIC_MANUAL                  0x3c
#define ADV7511_REG_VIC_SEND                    0x3d
#define ADV7511_REG_VIC_DETECTED                0x3e
#define ADV7511_REG_AUX_VIC_DETECTED            0x3f
#define ADV7511_REG_PACKET_ENABLE0              0x40
#define ADV7511_REG_POWER                       0x41
#define ADV7511_REG_STATUS                      0x42
#define ADV7511_REG_EDID_I2C_ADDR               0x43
#define ADV7511_REG_PACKET_ENABLE1              0x44
#define ADV7511_REG_PACKET_I2C_ADDR             0x45
#define ADV7511_REG_DSD_ENABLE                  0x46
#define ADV7511_REG_VIDEO_INPUT_CFG2            0x48
#define ADV7511_REG_INFOFRAME_UPDATE            0x4a
#define ADV7511_REG_GC(x)                       (0x4b + (x)) /* 0x4b - 0x51 */
#define ADV7511_REG_AVI_INFOFRAME_VERSION       0x52
#define ADV7511_REG_AVI_INFOFRAME_LENGTH        0x53
#define ADV7511_REG_AVI_INFOFRAME_CHECKSUM      0x54
#define ADV7511_REG_AVI_INFOFRAME(x)            (0x55 + (x)) /* 0x55 - 0x6f */
#define ADV7511_REG_AUDIO_INFOFRAME_VERSION     0x70
#define ADV7511_REG_AUDIO_INFOFRAME_LENGTH      0x71
#define ADV7511_REG_AUDIO_INFOFRAME_CHECKSUM    0x72
#define ADV7511_REG_AUDIO_INFOFRAME(x)          (0x73 + (x)) /* 0x73 - 0x7c */
#define ADV7511_REG_INT_ENABLE(x)               (0x94 + (x))
#define ADV7511_REG_INT(x)                      (0x96 + (x))
#define ADV7511_REG_INPUT_CLK_DIV               0x9d
#define ADV7511_REG_PLL_STATUS                  0x9e
#define ADV7511_REG_HDMI_POWER                  0xa1
#define ADV7511_REG_HDCP_HDMI_CFG               0xaf
#define ADV7511_REG_AN(x)                       (0xb0 + (x)) /* 0xb0 - 0xb7 */
#define ADV7511_REG_HDCP_STATUS                 0xb8
#define ADV7511_REG_BCAPS                       0xbe
#define ADV7511_REG_BKSV(x)                     (0xc0 + (x)) /* 0xc0 - 0xc3 */
#define ADV7511_REG_EDID_SEGMENT                0xc4
#define ADV7511_REG_DDC_STATUS                  0xc8
#define ADV7511_REG_EDID_READ_CTRL              0xc9
#define ADV7511_REG_BSTATUS(x)                  (0xca + (x)) /* 0xca - 0xcb */
#define ADV7511_REG_TIMING_GEN_SEQ              0xd0
#define ADV7511_REG_POWER2                      0xd6
#define ADV7511_REG_HSYNC_PLACEMENT_MSB         0xfa

#define ADV7511_REG_SYNC_ADJUSTMENT(x)          (0xd7 + (x)) /* 0xd7 - 0xdc */
#define ADV7511_REG_TMDS_CLOCK_INV              0xde
#define ADV7511_REG_ARC_CTRL                    0xdf
#define ADV7511_REG_CEC_I2C_ADDR                0xe1
#define ADV7511_REG_CEC_CTRL                    0xe2
#define ADV7511_REG_CHIP_ID_HIGH                0xf5
#define ADV7511_REG_CHIP_ID_LOW                 0xf6

/* Hardware defined default addresses for I2C register maps */
#define ADV7511_CEC_I2C_ADDR_DEFAULT            0x3c
#define ADV7511_EDID_I2C_ADDR_DEFAULT           0x3f
#define ADV7511_PACKET_I2C_ADDR_DEFAULT         0x38

#define ADV7511_CSC_ENABLE                      BIT(7)
#define ADV7511_CSC_UPDATE_MODE                 BIT(5)

#define ADV7511_INT0_HPD                        BIT(7)
#define ADV7511_INT0_VSYNC                      BIT(5)
#define ADV7511_INT0_AUDIO_FIFO_FULL            BIT(4)
#define ADV7511_INT0_EDID_READY                 BIT(2)
#define ADV7511_INT0_HDCP_AUTHENTICATED         BIT(1)

#define ADV7511_INT1_DDC_ERROR                  BIT(7)
#define ADV7511_INT1_BKSV                       BIT(6)
#define ADV7511_INT1_CEC_TX_READY               BIT(5)
#define ADV7511_INT1_CEC_TX_ARBIT_LOST          BIT(4)
#define ADV7511_INT1_CEC_TX_RETRY_TIMEOUT       BIT(3)
#define ADV7511_INT1_CEC_RX_READY3              BIT(2)
#define ADV7511_INT1_CEC_RX_READY2              BIT(1)
#define ADV7511_INT1_CEC_RX_READY1              BIT(0)

#define ADV7511_ARC_CTRL_POWER_DOWN             BIT(0)

#define ADV7511_CEC_CTRL_POWER_DOWN             BIT(0)

#define ADV7511_POWER_POWER_DOWN                BIT(6)

#define ADV7511_HDMI_CFG_MODE_MASK              0x2
#define ADV7511_HDMI_CFG_MODE_DVI               0x0
#define ADV7511_HDMI_CFG_MODE_HDMI              0x2

#define ADV7511_AUDIO_SELECT_I2C                0x0
#define ADV7511_AUDIO_SELECT_SPDIF              0x1
#define ADV7511_AUDIO_SELECT_DSD                0x2
#define ADV7511_AUDIO_SELECT_HBR                0x3
#define ADV7511_AUDIO_SELECT_DST                0x4

#define ADV7511_I2S_SAMPLE_LEN_16               0x2
#define ADV7511_I2S_SAMPLE_LEN_20               0x3
#define ADV7511_I2S_SAMPLE_LEN_18               0x4
#define ADV7511_I2S_SAMPLE_LEN_22               0x5
#define ADV7511_I2S_SAMPLE_LEN_19               0x8
#define ADV7511_I2S_SAMPLE_LEN_23               0x9
#define ADV7511_I2S_SAMPLE_LEN_24               0xb
#define ADV7511_I2S_SAMPLE_LEN_17               0xc
#define ADV7511_I2S_SAMPLE_LEN_21               0xd

#define ADV7511_SAMPLE_FREQ_44100               0x0
#define ADV7511_SAMPLE_FREQ_48000               0x2
#define ADV7511_SAMPLE_FREQ_32000               0x3
#define ADV7511_SAMPLE_FREQ_88200               0x8
#define ADV7511_SAMPLE_FREQ_96000               0xa
#define ADV7511_SAMPLE_FREQ_176400              0xc
#define ADV7511_SAMPLE_FREQ_192000              0xe

#define ADV7511_STATUS_POWER_DOWN_POLARITY      BIT(7)
#define ADV7511_STATUS_HPD                      BIT(6)
#define ADV7511_STATUS_MONITOR_SENSE            BIT(5)
#define ADV7511_STATUS_I2S_32BIT_MODE           BIT(3)

#define ADV7511_PACKET_ENABLE_N_CTS             BIT(8+6)
#define ADV7511_PACKET_ENABLE_AUDIO_SAMPLE      BIT(8+5)
#define ADV7511_PACKET_ENABLE_AVI_INFOFRAME     BIT(8+4)
#define ADV7511_PACKET_ENABLE_AUDIO_INFOFRAME   BIT(8+3)
#define ADV7511_PACKET_ENABLE_GC                BIT(7)
#define ADV7511_PACKET_ENABLE_SPD               BIT(6)
#define ADV7511_PACKET_ENABLE_MPEG              BIT(5)
#define ADV7511_PACKET_ENABLE_ACP               BIT(4)
#define ADV7511_PACKET_ENABLE_ISRC              BIT(3)
#define ADV7511_PACKET_ENABLE_GM                BIT(2)
#define ADV7511_PACKET_ENABLE_SPARE2            BIT(1)
#define ADV7511_PACKET_ENABLE_SPARE1            BIT(0)

#define ADV7511_REG_POWER2_HPD_SRC_MASK         0xc0
#define ADV7511_REG_POWER2_HPD_SRC_BOTH         0x00
#define ADV7511_REG_POWER2_HPD_SRC_HPD          0x40
#define ADV7511_REG_POWER2_HPD_SRC_CEC          0x80
#define ADV7511_REG_POWER2_HPD_SRC_NONE         0xc0
#define ADV7511_REG_POWER2_TDMS_ENABLE          BIT(4)
#define ADV7511_REG_POWER2_GATE_INPUT_CLK       BIT(0)

#define ADV7511_LOW_REFRESH_RATE_NONE           0x0
#define ADV7511_LOW_REFRESH_RATE_24HZ           0x1
#define ADV7511_LOW_REFRESH_RATE_25HZ           0x2
#define ADV7511_LOW_REFRESH_RATE_30HZ           0x3

#define ADV7511_AUDIO_CFG3_LEN_MASK             0x0f
#define ADV7511_I2C_FREQ_ID_CFG_RATE_MASK       0xf0

#define ADV7511_AUDIO_SOURCE_I2S                0
#define ADV7511_AUDIO_SOURCE_SPDIF              1

#define ADV7511_I2S_FORMAT_I2S                  0
#define ADV7511_I2S_FORMAT_RIGHT_J              1
#define ADV7511_I2S_FORMAT_LEFT_J               2

#define ADV7511_PACKET(p, x)        ((p) * 0x20 + (x))
#define ADV7511_PACKET_SDP(x)       ADV7511_PACKET(0, x)
#define ADV7511_PACKET_MPEG(x)      ADV7511_PACKET(1, x)
#define ADV7511_PACKET_ACP(x)       ADV7511_PACKET(2, x)
#define ADV7511_PACKET_ISRC1(x)     ADV7511_PACKET(3, x)
#define ADV7511_PACKET_ISRC2(x)     ADV7511_PACKET(4, x)
#define ADV7511_PACKET_GM(x)        ADV7511_PACKET(5, x)
#define ADV7511_PACKET_SPARE(x)     ADV7511_PACKET(6, x)

#define ADV7511_REG_CEC_TX_FRAME_HDR    0x00
#define ADV7511_REG_CEC_TX_FRAME_DATA0  0x01
#define ADV7511_REG_CEC_TX_FRAME_LEN    0x10
#define ADV7511_REG_CEC_TX_ENABLE       0x11
#define ADV7511_REG_CEC_TX_RETRY        0x12
#define ADV7511_REG_CEC_TX_LOW_DRV_CNT  0x14
#define ADV7511_REG_CEC_RX_FRAME_HDR    0x15
#define ADV7511_REG_CEC_RX_FRAME_DATA0  0x16
#define ADV7511_REG_CEC_RX_FRAME_LEN    0x25
#define ADV7511_REG_CEC_RX_ENABLE       0x26
#define ADV7511_REG_CEC_RX_BUFFERS      0x4a
#define ADV7511_REG_CEC_LOG_ADDR_MASK   0x4b
#define ADV7511_REG_CEC_LOG_ADDR_0_1    0x4c
#define ADV7511_REG_CEC_LOG_ADDR_2      0x4d
#define ADV7511_REG_CEC_CLK_DIV         0x4e
#define ADV7511_REG_CEC_SOFT_RESET      0x50

#define ADV7533_REG_CEC_OFFSET          0x70

enum adv7511_input_clock {
        ADV7511_INPUT_CLOCK_1X,
        ADV7511_INPUT_CLOCK_2X,
        ADV7511_INPUT_CLOCK_DDR,
};

enum adv7511_input_justification {
        ADV7511_INPUT_JUSTIFICATION_EVENLY = 0,
        ADV7511_INPUT_JUSTIFICATION_RIGHT = 1,
        ADV7511_INPUT_JUSTIFICATION_LEFT = 2,
};

enum adv7511_input_sync_pulse {
        ADV7511_INPUT_SYNC_PULSE_DE = 0,
        ADV7511_INPUT_SYNC_PULSE_HSYNC = 1,
        ADV7511_INPUT_SYNC_PULSE_VSYNC = 2,
        ADV7511_INPUT_SYNC_PULSE_NONE = 3,
};

/**
 * enum adv7511_sync_polarity - Polarity for the input sync signals
 * @ADV7511_SYNC_POLARITY_PASSTHROUGH:  Sync polarity matches that of
 *                                     the currently configured mode.
 * @ADV7511_SYNC_POLARITY_LOW:      Sync polarity is low
 * @ADV7511_SYNC_POLARITY_HIGH:     Sync polarity is high
 *
 * If the polarity is set to either LOW or HIGH the driver will configure the
 * ADV7511 to internally invert the sync signal if required to match the sync
 * polarity setting for the currently selected output mode.
 *
 * If the polarity is set to PASSTHROUGH, the ADV7511 will route the signal
 * unchanged. This is used when the upstream graphics core already generates
 * the sync signals with the correct polarity.
 */
enum adv7511_sync_polarity {
        ADV7511_SYNC_POLARITY_PASSTHROUGH,
        ADV7511_SYNC_POLARITY_LOW,
        ADV7511_SYNC_POLARITY_HIGH,
};

/**
 * struct adv7511_link_config - Describes adv7511 hardware configuration
 * @input_color_depth:          Number of bits per color component (8, 10 or 12)
 * @input_colorspace:           The input colorspace (RGB, YUV444, YUV422)
 * @input_clock:                The input video clock style (1x, 2x, DDR)
 * @input_style:                The input component arrangement variant
 * @input_justification:        Video input format bit justification
 * @clock_delay:                Clock delay for the input clock (in ps)
 * @embedded_sync:              Video input uses BT.656-style embedded sync
 * @sync_pulse:                 Select the sync pulse
 * @vsync_polarity:             vsync input signal configuration
 * @hsync_polarity:             hsync input signal configuration
 */
struct adv7511_link_config {
        unsigned int input_color_depth;
        enum hdmi_colorspace input_colorspace;
        enum adv7511_input_clock input_clock;
        unsigned int input_style;
        enum adv7511_input_justification input_justification;

        int clock_delay;

        bool embedded_sync;
        enum adv7511_input_sync_pulse sync_pulse;
        enum adv7511_sync_polarity vsync_polarity;
        enum adv7511_sync_polarity hsync_polarity;
};

/**
 * enum adv7511_csc_scaling - Scaling factor for the ADV7511 CSC
 * @ADV7511_CSC_SCALING_1: CSC results are not scaled
 * @ADV7511_CSC_SCALING_2: CSC results are scaled by a factor of two
 * @ADV7511_CSC_SCALING_4: CSC results are scalled by a factor of four
 */
enum adv7511_csc_scaling {
        ADV7511_CSC_SCALING_1 = 0,
        ADV7511_CSC_SCALING_2 = 1,
        ADV7511_CSC_SCALING_4 = 2,
};

/**
 * struct adv7511_video_config - Describes adv7511 hardware configuration
 * @csc_enable:                 Whether to enable color space conversion
 * @csc_scaling_factor:         Color space conversion scaling factor
 * @csc_coefficents:            Color space conversion coefficents
 * @hdmi_mode:                  Whether to use HDMI or DVI output mode
 * @avi_infoframe:              HDMI infoframe
 */
struct adv7511_video_config {
        bool csc_enable;
        enum adv7511_csc_scaling csc_scaling_factor;
        const uint16_t *csc_coefficents;

        bool hdmi_mode;
        struct hdmi_avi_infoframe avi_infoframe;
};

enum adv7511_type {
        ADV7511,
        ADV7533,
};

#define ADV7511_MAX_ADDRS 3

struct adv7511 {
        struct i2c_client *i2c_main;
        struct i2c_client *i2c_edid;
        struct i2c_client *i2c_packet;
        struct i2c_client *i2c_cec;

        struct regmap *regmap;
        struct regmap *regmap_cec;
        enum drm_connector_status status;
        bool powered;

        struct drm_display_mode curr_mode;

        unsigned int f_tmds;
        unsigned int f_audio;
        unsigned int audio_source;

        unsigned int current_edid_segment;
        uint8_t edid_buf[256];
        bool edid_read;

        wait_queue_head_t wq;
        struct work_struct hpd_work;

        struct drm_bridge bridge;
        struct drm_connector connector;

        bool embedded_sync;
        enum adv7511_sync_polarity vsync_polarity;
        enum adv7511_sync_polarity hsync_polarity;
        bool rgb;

        struct gpio_desc *gpio_pd;

        struct regulator_bulk_data *supplies;
        unsigned int num_supplies;

        /* ADV7533 DSI RX related params */
        struct device_node *host_node;
        struct mipi_dsi_device *dsi;
        u8 num_dsi_lanes;
        bool use_timing_gen;

        enum adv7511_type type;
        struct platform_device *audio_pdev;

        struct cec_adapter *cec_adap;
        u8   cec_addr[ADV7511_MAX_ADDRS];
        u8   cec_valid_addrs;
        bool cec_enabled_adap;
        struct clk *cec_clk;
        u32 cec_clk_freq;
};

#ifdef CONFIG_DRM_I2C_ADV7511_CEC
int adv7511_cec_init(struct device *dev, struct adv7511 *adv7511);
void adv7511_cec_irq_process(struct adv7511 *adv7511, unsigned int irq1);
#else
static inline int adv7511_cec_init(struct device *dev, struct adv7511 *adv7511)
{
        unsigned int offset = adv7511->type == ADV7533 ?
                                                ADV7533_REG_CEC_OFFSET : 0;

        regmap_write(adv7511->regmap, ADV7511_REG_CEC_CTRL + offset,
                     ADV7511_CEC_CTRL_POWER_DOWN);
        return 0;
}
#endif

#ifdef CONFIG_DRM_I2C_ADV7533
void adv7533_dsi_power_on(struct adv7511 *adv);
void adv7533_dsi_power_off(struct adv7511 *adv);
void adv7533_mode_set(struct adv7511 *adv, struct drm_display_mode *mode);
int adv7533_patch_registers(struct adv7511 *adv);
int adv7533_patch_cec_registers(struct adv7511 *adv);
int adv7533_attach_dsi(struct adv7511 *adv);
void adv7533_detach_dsi(struct adv7511 *adv);
int adv7533_parse_dt(struct device_node *np, struct adv7511 *adv);
#else
static inline void adv7533_dsi_power_on(struct adv7511 *adv)
{
}

static inline void adv7533_dsi_power_off(struct adv7511 *adv)
{
}

static inline void adv7533_mode_set(struct adv7511 *adv,
                                    struct drm_display_mode *mode)
{
}

static inline int adv7533_patch_registers(struct adv7511 *adv)
{
        return -ENODEV;
}

static inline int adv7533_patch_cec_registers(struct adv7511 *adv)
{
        return -ENODEV;
}

static inline int adv7533_attach_dsi(struct adv7511 *adv)
{
        return -ENODEV;
}

static inline void adv7533_detach_dsi(struct adv7511 *adv)
{
}

static inline int adv7533_parse_dt(struct device_node *np, struct adv7511 *adv)
{
        return -ENODEV;
}
#endif

#ifdef CONFIG_DRM_I2C_ADV7511_AUDIO
int adv7511_audio_init(struct device *dev, struct adv7511 *adv7511);
void adv7511_audio_exit(struct adv7511 *adv7511);
#else /*CONFIG_DRM_I2C_ADV7511_AUDIO */
static inline int adv7511_audio_init(struct device *dev, struct adv7511 *adv7511)
{
        return 0;
}
static inline void adv7511_audio_exit(struct adv7511 *adv7511)
{
}
#endif /* CONFIG_DRM_I2C_ADV7511_AUDIO */

#endif /* __DRM_I2C_ADV7511_H__ */