/*
 * adv7604 - Analog Devices ADV7604 video decoder driver
 *
 * Copyright 2012 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
 *
 * This program is free software; you may redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

/*
 * References (c = chapter, p = page):
 * REF_01 - Analog devices, ADV7604, Register Settings Recommendations,
 *              Revision 2.5, June 2010
 * REF_02 - Analog devices, Register map documentation, Documentation of
 *              the register maps, Software manual, Rev. F, June 2010
 * REF_03 - Analog devices, ADV7604, Hardware Manual, Rev. F, August 2010
 */

#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/hdmi.h>
#include <linux/i2c.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/v4l2-dv-timings.h>
#include <linux/videodev2.h>
#include <linux/workqueue.h>
#include <linux/regmap.h>

#include <media/adv7604.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-event.h>
#include <media/v4l2-dv-timings.h>
#include <media/v4l2-of.h>

static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "debug level (0-2)");

MODULE_DESCRIPTION("Analog Devices ADV7604 video decoder driver");
MODULE_AUTHOR("Hans Verkuil <hans.verkuil@cisco.com>");
MODULE_AUTHOR("Mats Randgaard <mats.randgaard@cisco.com>");
MODULE_LICENSE("GPL");

/* ADV7604 system clock frequency */
#define ADV76XX_FSC (28636360)

#define ADV76XX_RGB_OUT                                 (1 << 1)

#define ADV76XX_OP_FORMAT_SEL_8BIT                      (0 << 0)
#define ADV7604_OP_FORMAT_SEL_10BIT                     (1 << 0)
#define ADV76XX_OP_FORMAT_SEL_12BIT                     (2 << 0)

#define ADV76XX_OP_MODE_SEL_SDR_422                     (0 << 5)
#define ADV7604_OP_MODE_SEL_DDR_422                     (1 << 5)
#define ADV76XX_OP_MODE_SEL_SDR_444                     (2 << 5)
#define ADV7604_OP_MODE_SEL_DDR_444                     (3 << 5)
#define ADV76XX_OP_MODE_SEL_SDR_422_2X                  (4 << 5)
#define ADV7604_OP_MODE_SEL_ADI_CM                      (5 << 5)

#define ADV76XX_OP_CH_SEL_GBR                           (0 << 5)
#define ADV76XX_OP_CH_SEL_GRB                           (1 << 5)
#define ADV76XX_OP_CH_SEL_BGR                           (2 << 5)
#define ADV76XX_OP_CH_SEL_RGB                           (3 << 5)
#define ADV76XX_OP_CH_SEL_BRG                           (4 << 5)
#define ADV76XX_OP_CH_SEL_RBG                           (5 << 5)

#define ADV76XX_OP_SWAP_CB_CR                           (1 << 0)

enum adv76xx_type {
        ADV7604,
        ADV7611,
        ADV7612,
};

struct adv76xx_reg_seq {
        unsigned int reg;
        u8 val;
};

struct adv76xx_format_info {
        u32 code;
        u8 op_ch_sel;
        bool rgb_out;
        bool swap_cb_cr;
        u8 op_format_sel;
};

struct adv76xx_cfg_read_infoframe {
        const char *desc;
        u8 present_mask;
        u8 head_addr;
        u8 payload_addr;
};

struct adv76xx_chip_info {
        enum adv76xx_type type;

        bool has_afe;
        unsigned int max_port;
        unsigned int num_dv_ports;

        unsigned int edid_enable_reg;
        unsigned int edid_status_reg;
        unsigned int lcf_reg;

        unsigned int cable_det_mask;
        unsigned int tdms_lock_mask;
        unsigned int fmt_change_digital_mask;
        unsigned int cp_csc;

        const struct adv76xx_format_info *formats;
        unsigned int nformats;

        void (*set_termination)(struct v4l2_subdev *sd, bool enable);
        void (*setup_irqs)(struct v4l2_subdev *sd);
        unsigned int (*read_hdmi_pixelclock)(struct v4l2_subdev *sd);
        unsigned int (*read_cable_det)(struct v4l2_subdev *sd);

        /* 0 = AFE, 1 = HDMI */
        const struct adv76xx_reg_seq *recommended_settings[2];
        unsigned int num_recommended_settings[2];

        unsigned long page_mask;

        /* Masks for timings */
        unsigned int linewidth_mask;
        unsigned int field0_height_mask;
        unsigned int field1_height_mask;
        unsigned int hfrontporch_mask;
        unsigned int hsync_mask;
        unsigned int hbackporch_mask;
        unsigned int field0_vfrontporch_mask;
        unsigned int field1_vfrontporch_mask;
        unsigned int field0_vsync_mask;
        unsigned int field1_vsync_mask;
        unsigned int field0_vbackporch_mask;
        unsigned int field1_vbackporch_mask;
};

/*
 **********************************************************************
 *
 *  Arrays with configuration parameters for the ADV7604
 *
 **********************************************************************
 */

struct adv76xx_state {
        const struct adv76xx_chip_info *info;
        struct adv76xx_platform_data pdata;

        struct gpio_desc *hpd_gpio[4];

        struct v4l2_subdev sd;
        struct media_pad pads[ADV76XX_PAD_MAX];
        unsigned int source_pad;

        struct v4l2_ctrl_handler hdl;

        enum adv76xx_pad selected_input;

        struct v4l2_dv_timings timings;
        const struct adv76xx_format_info *format;

        struct {
                u8 edid[256];
                u32 present;
                unsigned blocks;
        } edid;
        u16 spa_port_a[2];
        struct v4l2_fract aspect_ratio;
        u32 rgb_quantization_range;
        struct workqueue_struct *work_queues;
        struct delayed_work delayed_work_enable_hotplug;
        bool restart_stdi_once;

        /* i2c clients */
        struct i2c_client *i2c_clients[ADV76XX_PAGE_MAX];

        /* Regmaps */
        struct regmap *regmap[ADV76XX_PAGE_MAX];

        /* controls */
        struct v4l2_ctrl *detect_tx_5v_ctrl;
        struct v4l2_ctrl *analog_sampling_phase_ctrl;
        struct v4l2_ctrl *free_run_color_manual_ctrl;
        struct v4l2_ctrl *free_run_color_ctrl;
        struct v4l2_ctrl *rgb_quantization_range_ctrl;
};

static bool adv76xx_has_afe(struct adv76xx_state *state)
{
        return state->info->has_afe;
}

/* Supported CEA and DMT timings */
static const struct v4l2_dv_timings adv76xx_timings[] = {
        V4L2_DV_BT_CEA_720X480P59_94,
        V4L2_DV_BT_CEA_720X576P50,
        V4L2_DV_BT_CEA_1280X720P24,
        V4L2_DV_BT_CEA_1280X720P25,
        V4L2_DV_BT_CEA_1280X720P50,
        V4L2_DV_BT_CEA_1280X720P60,
        V4L2_DV_BT_CEA_1920X1080P24,
        V4L2_DV_BT_CEA_1920X1080P25,
        V4L2_DV_BT_CEA_1920X1080P30,
        V4L2_DV_BT_CEA_1920X1080P50,
        V4L2_DV_BT_CEA_1920X1080P60,

        /* sorted by DMT ID */
        V4L2_DV_BT_DMT_640X350P85,
        V4L2_DV_BT_DMT_640X400P85,
        V4L2_DV_BT_DMT_720X400P85,
        V4L2_DV_BT_DMT_640X480P60,
        V4L2_DV_BT_DMT_640X480P72,
        V4L2_DV_BT_DMT_640X480P75,
        V4L2_DV_BT_DMT_640X480P85,
        V4L2_DV_BT_DMT_800X600P56,
        V4L2_DV_BT_DMT_800X600P60,
        V4L2_DV_BT_DMT_800X600P72,
        V4L2_DV_BT_DMT_800X600P75,
        V4L2_DV_BT_DMT_800X600P85,
        V4L2_DV_BT_DMT_848X480P60,
        V4L2_DV_BT_DMT_1024X768P60,
        V4L2_DV_BT_DMT_1024X768P70,
        V4L2_DV_BT_DMT_1024X768P75,
        V4L2_DV_BT_DMT_1024X768P85,
        V4L2_DV_BT_DMT_1152X864P75,
        V4L2_DV_BT_DMT_1280X768P60_RB,
        V4L2_DV_BT_DMT_1280X768P60,
        V4L2_DV_BT_DMT_1280X768P75,
        V4L2_DV_BT_DMT_1280X768P85,
        V4L2_DV_BT_DMT_1280X800P60_RB,
        V4L2_DV_BT_DMT_1280X800P60,
        V4L2_DV_BT_DMT_1280X800P75,
        V4L2_DV_BT_DMT_1280X800P85,
        V4L2_DV_BT_DMT_1280X960P60,
        V4L2_DV_BT_DMT_1280X960P85,
        V4L2_DV_BT_DMT_1280X1024P60,
        V4L2_DV_BT_DMT_1280X1024P75,
        V4L2_DV_BT_DMT_1280X1024P85,
        V4L2_DV_BT_DMT_1360X768P60,
        V4L2_DV_BT_DMT_1400X1050P60_RB,
        V4L2_DV_BT_DMT_1400X1050P60,
        V4L2_DV_BT_DMT_1400X1050P75,
        V4L2_DV_BT_DMT_1400X1050P85,
        V4L2_DV_BT_DMT_1440X900P60_RB,
        V4L2_DV_BT_DMT_1440X900P60,
        V4L2_DV_BT_DMT_1600X1200P60,
        V4L2_DV_BT_DMT_1680X1050P60_RB,
        V4L2_DV_BT_DMT_1680X1050P60,
        V4L2_DV_BT_DMT_1792X1344P60,
        V4L2_DV_BT_DMT_1856X1392P60,
        V4L2_DV_BT_DMT_1920X1200P60_RB,
        V4L2_DV_BT_DMT_1366X768P60_RB,
        V4L2_DV_BT_DMT_1366X768P60,
        V4L2_DV_BT_DMT_1920X1080P60,
        { },
};

struct adv76xx_video_standards {
        struct v4l2_dv_timings timings;
        u8 vid_std;
        u8 v_freq;
};

/* sorted by number of lines */
static const struct adv76xx_video_standards adv7604_prim_mode_comp[] = {
        /* { V4L2_DV_BT_CEA_720X480P59_94, 0x0a, 0x00 }, TODO flickering */
        { V4L2_DV_BT_CEA_720X576P50, 0x0b, 0x00 },
        { V4L2_DV_BT_CEA_1280X720P50, 0x19, 0x01 },
        { V4L2_DV_BT_CEA_1280X720P60, 0x19, 0x00 },
        { V4L2_DV_BT_CEA_1920X1080P24, 0x1e, 0x04 },
        { V4L2_DV_BT_CEA_1920X1080P25, 0x1e, 0x03 },
        { V4L2_DV_BT_CEA_1920X1080P30, 0x1e, 0x02 },
        { V4L2_DV_BT_CEA_1920X1080P50, 0x1e, 0x01 },
        { V4L2_DV_BT_CEA_1920X1080P60, 0x1e, 0x00 },
        /* TODO add 1920x1080P60_RB (CVT timing) */
        { },
};

/* sorted by number of lines */
static const struct adv76xx_video_standards adv7604_prim_mode_gr[] = {
        { V4L2_DV_BT_DMT_640X480P60, 0x08, 0x00 },
        { V4L2_DV_BT_DMT_640X480P72, 0x09, 0x00 },
        { V4L2_DV_BT_DMT_640X480P75, 0x0a, 0x00 },
        { V4L2_DV_BT_DMT_640X480P85, 0x0b, 0x00 },
        { V4L2_DV_BT_DMT_800X600P56, 0x00, 0x00 },
        { V4L2_DV_BT_DMT_800X600P60, 0x01, 0x00 },
        { V4L2_DV_BT_DMT_800X600P72, 0x02, 0x00 },
        { V4L2_DV_BT_DMT_800X600P75, 0x03, 0x00 },
        { V4L2_DV_BT_DMT_800X600P85, 0x04, 0x00 },
        { V4L2_DV_BT_DMT_1024X768P60, 0x0c, 0x00 },
        { V4L2_DV_BT_DMT_1024X768P70, 0x0d, 0x00 },
        { V4L2_DV_BT_DMT_1024X768P75, 0x0e, 0x00 },
        { V4L2_DV_BT_DMT_1024X768P85, 0x0f, 0x00 },
        { V4L2_DV_BT_DMT_1280X1024P60, 0x05, 0x00 },
        { V4L2_DV_BT_DMT_1280X1024P75, 0x06, 0x00 },
        { V4L2_DV_BT_DMT_1360X768P60, 0x12, 0x00 },
        { V4L2_DV_BT_DMT_1366X768P60, 0x13, 0x00 },
        { V4L2_DV_BT_DMT_1400X1050P60, 0x14, 0x00 },
        { V4L2_DV_BT_DMT_1400X1050P75, 0x15, 0x00 },
        { V4L2_DV_BT_DMT_1600X1200P60, 0x16, 0x00 }, /* TODO not tested */
        /* TODO add 1600X1200P60_RB (not a DMT timing) */
        { V4L2_DV_BT_DMT_1680X1050P60, 0x18, 0x00 },
        { V4L2_DV_BT_DMT_1920X1200P60_RB, 0x19, 0x00 }, /* TODO not tested */
        { },
};

/* sorted by number of lines */
static const struct adv76xx_video_standards adv76xx_prim_mode_hdmi_comp[] = {
        { V4L2_DV_BT_CEA_720X480P59_94, 0x0a, 0x00 },
        { V4L2_DV_BT_CEA_720X576P50, 0x0b, 0x00 },
        { V4L2_DV_BT_CEA_1280X720P50, 0x13, 0x01 },
        { V4L2_DV_BT_CEA_1280X720P60, 0x13, 0x00 },
        { V4L2_DV_BT_CEA_1920X1080P24, 0x1e, 0x04 },
        { V4L2_DV_BT_CEA_1920X1080P25, 0x1e, 0x03 },
        { V4L2_DV_BT_CEA_1920X1080P30, 0x1e, 0x02 },
        { V4L2_DV_BT_CEA_1920X1080P50, 0x1e, 0x01 },
        { V4L2_DV_BT_CEA_1920X1080P60, 0x1e, 0x00 },
        { },
};

/* sorted by number of lines */
static const struct adv76xx_video_standards adv76xx_prim_mode_hdmi_gr[] = {
        { V4L2_DV_BT_DMT_640X480P60, 0x08, 0x00 },
        { V4L2_DV_BT_DMT_640X480P72, 0x09, 0x00 },
        { V4L2_DV_BT_DMT_640X480P75, 0x0a, 0x00 },
        { V4L2_DV_BT_DMT_640X480P85, 0x0b, 0x00 },
        { V4L2_DV_BT_DMT_800X600P56, 0x00, 0x00 },
        { V4L2_DV_BT_DMT_800X600P60, 0x01, 0x00 },
        { V4L2_DV_BT_DMT_800X600P72, 0x02, 0x00 },
        { V4L2_DV_BT_DMT_800X600P75, 0x03, 0x00 },
        { V4L2_DV_BT_DMT_800X600P85, 0x04, 0x00 },
        { V4L2_DV_BT_DMT_1024X768P60, 0x0c, 0x00 },
        { V4L2_DV_BT_DMT_1024X768P70, 0x0d, 0x00 },
        { V4L2_DV_BT_DMT_1024X768P75, 0x0e, 0x00 },
        { V4L2_DV_BT_DMT_1024X768P85, 0x0f, 0x00 },
        { V4L2_DV_BT_DMT_1280X1024P60, 0x05, 0x00 },
        { V4L2_DV_BT_DMT_1280X1024P75, 0x06, 0x00 },
        { },
};

static const struct v4l2_event adv76xx_ev_fmt = {
        .type = V4L2_EVENT_SOURCE_CHANGE,
        .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
};

/* ----------------------------------------------------------------------- */

static inline struct adv76xx_state *to_state(struct v4l2_subdev *sd)
{
        return container_of(sd, struct adv76xx_state, sd);
}

static inline unsigned htotal(const struct v4l2_bt_timings *t)
{
        return V4L2_DV_BT_FRAME_WIDTH(t);
}

static inline unsigned vtotal(const struct v4l2_bt_timings *t)
{
        return V4L2_DV_BT_FRAME_HEIGHT(t);
}

/* ----------------------------------------------------------------------- */

static int adv76xx_read_check(struct adv76xx_state *state,
                             int client_page, u8 reg)
{
        struct i2c_client *client = state->i2c_clients[client_page];
        int err;
        unsigned int val;

        err = regmap_read(state->regmap[client_page], reg, &val);

        if (err) {
                v4l_err(client, "error reading %02x, %02x\n",
                                client->addr, reg);
                return err;
        }
        return val;
}

/* adv76xx_write_block(): Write raw data with a maximum of I2C_SMBUS_BLOCK_MAX
 * size to one or more registers.
 *
 * A value of zero will be returned on success, a negative errno will
 * be returned in error cases.
 */
static int adv76xx_write_block(struct adv76xx_state *state, int client_page,
                              unsigned int init_reg, const void *val,
                              size_t val_len)
{
        struct regmap *regmap = state->regmap[client_page];

        if (val_len > I2C_SMBUS_BLOCK_MAX)
                val_len = I2C_SMBUS_BLOCK_MAX;

        return regmap_raw_write(regmap, init_reg, val, val_len);
}

/* ----------------------------------------------------------------------- */

static inline int io_read(struct v4l2_subdev *sd, u8 reg)
{
        struct adv76xx_state *state = to_state(sd);

        return adv76xx_read_check(state, ADV76XX_PAGE_IO, reg);
}

static inline int io_write(struct v4l2_subdev *sd, u8 reg, u8 val)
{
        struct adv76xx_state *state = to_state(sd);

        return regmap_write(state->regmap[ADV76XX_PAGE_IO], reg, val);
}

static inline int io_write_clr_set(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val)
{
        return io_write(sd, reg, (io_read(sd, reg) & ~mask) | val);
}

static inline int avlink_read(struct v4l2_subdev *sd, u8 reg)
{
        struct adv76xx_state *state = to_state(sd);

        return adv76xx_read_check(state, ADV7604_PAGE_AVLINK, reg);
}

static inline int avlink_write(struct v4l2_subdev *sd, u8 reg, u8 val)
{
        struct adv76xx_state *state = to_state(sd);

        return regmap_write(state->regmap[ADV7604_PAGE_AVLINK], reg, val);
}

static inline int cec_read(struct v4l2_subdev *sd, u8 reg)
{
        struct adv76xx_state *state = to_state(sd);

        return adv76xx_read_check(state, ADV76XX_PAGE_CEC, reg);
}

static inline int cec_write(struct v4l2_subdev *sd, u8 reg, u8 val)
{
        struct adv76xx_state *state = to_state(sd);

        return regmap_write(state->regmap[ADV76XX_PAGE_CEC], reg, val);
}

static inline int infoframe_read(struct v4l2_subdev *sd, u8 reg)
{
        struct adv76xx_state *state = to_state(sd);

        return adv76xx_read_check(state, ADV76XX_PAGE_INFOFRAME, reg);
}

static inline int infoframe_write(struct v4l2_subdev *sd, u8 reg, u8 val)
{
        struct adv76xx_state *state = to_state(sd);

        return regmap_write(state->regmap[ADV76XX_PAGE_INFOFRAME], reg, val);
}

static inline int afe_read(struct v4l2_subdev *sd, u8 reg)
{
        struct adv76xx_state *state = to_state(sd);

        return adv76xx_read_check(state, ADV76XX_PAGE_AFE, reg);
}

static inline int afe_write(struct v4l2_subdev *sd, u8 reg, u8 val)
{
        struct adv76xx_state *state = to_state(sd);

        return regmap_write(state->regmap[ADV76XX_PAGE_AFE], reg, val);
}

static inline int rep_read(struct v4l2_subdev *sd, u8 reg)
{
        struct adv76xx_state *state = to_state(sd);

        return adv76xx_read_check(state, ADV76XX_PAGE_REP, reg);
}

static inline int rep_write(struct v4l2_subdev *sd, u8 reg, u8 val)
{
        struct adv76xx_state *state = to_state(sd);

        return regmap_write(state->regmap[ADV76XX_PAGE_REP], reg, val);
}

static inline int rep_write_clr_set(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val)
{
        return rep_write(sd, reg, (rep_read(sd, reg) & ~mask) | val);
}

static inline int edid_read(struct v4l2_subdev *sd, u8 reg)
{
        struct adv76xx_state *state = to_state(sd);

        return adv76xx_read_check(state, ADV76XX_PAGE_EDID, reg);
}

static inline int edid_write(struct v4l2_subdev *sd, u8 reg, u8 val)
{
        struct adv76xx_state *state = to_state(sd);

        return regmap_write(state->regmap[ADV76XX_PAGE_EDID], reg, val);
}

static inline int edid_write_block(struct v4l2_subdev *sd,
                                        unsigned int total_len, const u8 *val)
{
        struct adv76xx_state *state = to_state(sd);
        int err = 0;
        int i = 0;
        int len = 0;

        v4l2_dbg(2, debug, sd, "%s: write EDID block (%d byte)\n",
                                __func__, total_len);

        while (!err && i < total_len) {
                len = (total_len - i) > I2C_SMBUS_BLOCK_MAX ?
                                I2C_SMBUS_BLOCK_MAX :
                                (total_len - i);

                err = adv76xx_write_block(state, ADV76XX_PAGE_EDID,
                                i, val + i, len);
                i += len;
        }

        return err;
}

static void adv76xx_set_hpd(struct adv76xx_state *state, unsigned int hpd)
{
        unsigned int i;

        for (i = 0; i < state->info->num_dv_ports; ++i)
                gpiod_set_value_cansleep(state->hpd_gpio[i], hpd & BIT(i));

        v4l2_subdev_notify(&state->sd, ADV76XX_HOTPLUG, &hpd);
}

static void adv76xx_delayed_work_enable_hotplug(struct work_struct *work)
{
        struct delayed_work *dwork = to_delayed_work(work);
        struct adv76xx_state *state = container_of(dwork, struct adv76xx_state,
                                                delayed_work_enable_hotplug);
        struct v4l2_subdev *sd = &state->sd;

        v4l2_dbg(2, debug, sd, "%s: enable hotplug\n", __func__);

        adv76xx_set_hpd(state, state->edid.present);
}

static inline int hdmi_read(struct v4l2_subdev *sd, u8 reg)
{
        struct adv76xx_state *state = to_state(sd);

        return adv76xx_read_check(state, ADV76XX_PAGE_HDMI, reg);
}

static u16 hdmi_read16(struct v4l2_subdev *sd, u8 reg, u16 mask)
{
        return ((hdmi_read(sd, reg) << 8) | hdmi_read(sd, reg + 1)) & mask;
}

static inline int hdmi_write(struct v4l2_subdev *sd, u8 reg, u8 val)
{
        struct adv76xx_state *state = to_state(sd);

        return regmap_write(state->regmap[ADV76XX_PAGE_HDMI], reg, val);
}

static inline int hdmi_write_clr_set(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val)
{
        return hdmi_write(sd, reg, (hdmi_read(sd, reg) & ~mask) | val);
}

static inline int test_write(struct v4l2_subdev *sd, u8 reg, u8 val)
{
        struct adv76xx_state *state = to_state(sd);

        return regmap_write(state->regmap[ADV76XX_PAGE_TEST], reg, val);
}

static inline int cp_read(struct v4l2_subdev *sd, u8 reg)
{
        struct adv76xx_state *state = to_state(sd);

        return adv76xx_read_check(state, ADV76XX_PAGE_CP, reg);
}

static u16 cp_read16(struct v4l2_subdev *sd, u8 reg, u16 mask)
{
        return ((cp_read(sd, reg) << 8) | cp_read(sd, reg + 1)) & mask;
}

static inline int cp_write(struct v4l2_subdev *sd, u8 reg, u8 val)
{
        struct adv76xx_state *state = to_state(sd);

        return regmap_write(state->regmap[ADV76XX_PAGE_CP], reg, val);
}

static inline int cp_write_clr_set(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val)
{
        return cp_write(sd, reg, (cp_read(sd, reg) & ~mask) | val);
}

static inline int vdp_read(struct v4l2_subdev *sd, u8 reg)
{
        struct adv76xx_state *state = to_state(sd);

        return adv76xx_read_check(state, ADV7604_PAGE_VDP, reg);
}

static inline int vdp_write(struct v4l2_subdev *sd, u8 reg, u8 val)
{
        struct adv76xx_state *state = to_state(sd);

        return regmap_write(state->regmap[ADV7604_PAGE_VDP], reg, val);
}

#define ADV76XX_REG(page, offset)       (((page) << 8) | (offset))
#define ADV76XX_REG_SEQ_TERM            0xffff

#ifdef CONFIG_VIDEO_ADV_DEBUG
static int adv76xx_read_reg(struct v4l2_subdev *sd, unsigned int reg)
{
        struct adv76xx_state *state = to_state(sd);
        unsigned int page = reg >> 8;
        unsigned int val;
        int err;

        if (!(BIT(page) & state->info->page_mask))
                return -EINVAL;

        reg &= 0xff;
        err = regmap_read(state->regmap[page], reg, &val);

        return err ? err : val;
}
#endif

static int adv76xx_write_reg(struct v4l2_subdev *sd, unsigned int reg, u8 val)
{
        struct adv76xx_state *state = to_state(sd);
        unsigned int page = reg >> 8;

        if (!(BIT(page) & state->info->page_mask))
                return -EINVAL;

        reg &= 0xff;

        return regmap_write(state->regmap[page], reg, val);
}

static void adv76xx_write_reg_seq(struct v4l2_subdev *sd,
                                  const struct adv76xx_reg_seq *reg_seq)
{
        unsigned int i;

        for (i = 0; reg_seq[i].reg != ADV76XX_REG_SEQ_TERM; i++)
                adv76xx_write_reg(sd, reg_seq[i].reg, reg_seq[i].val);
}

/* -----------------------------------------------------------------------------
 * Format helpers
 */

static const struct adv76xx_format_info adv7604_formats[] = {
        { MEDIA_BUS_FMT_RGB888_1X24, ADV76XX_OP_CH_SEL_RGB, true, false,
          ADV76XX_OP_MODE_SEL_SDR_444 | ADV76XX_OP_FORMAT_SEL_8BIT },
        { MEDIA_BUS_FMT_YUYV8_2X8, ADV76XX_OP_CH_SEL_RGB, false, false,
          ADV76XX_OP_MODE_SEL_SDR_422 | ADV76XX_OP_FORMAT_SEL_8BIT },
        { MEDIA_BUS_FMT_YVYU8_2X8, ADV76XX_OP_CH_SEL_RGB, false, true,
          ADV76XX_OP_MODE_SEL_SDR_422 | ADV76XX_OP_FORMAT_SEL_8BIT },
        { MEDIA_BUS_FMT_YUYV10_2X10, ADV76XX_OP_CH_SEL_RGB, false, false,
          ADV76XX_OP_MODE_SEL_SDR_422 | ADV7604_OP_FORMAT_SEL_10BIT },
        { MEDIA_BUS_FMT_YVYU10_2X10, ADV76XX_OP_CH_SEL_RGB, false, true,
          ADV76XX_OP_MODE_SEL_SDR_422 | ADV7604_OP_FORMAT_SEL_10BIT },
        { MEDIA_BUS_FMT_YUYV12_2X12, ADV76XX_OP_CH_SEL_RGB, false, false,
          ADV76XX_OP_MODE_SEL_SDR_422 | ADV76XX_OP_FORMAT_SEL_12BIT },
        { MEDIA_BUS_FMT_YVYU12_2X12, ADV76XX_OP_CH_SEL_RGB, false, true,
          ADV76XX_OP_MODE_SEL_SDR_422 | ADV76XX_OP_FORMAT_SEL_12BIT },
        { MEDIA_BUS_FMT_UYVY8_1X16, ADV76XX_OP_CH_SEL_RBG, false, false,
          ADV76XX_OP_MODE_SEL_SDR_422_2X | ADV76XX_OP_FORMAT_SEL_8BIT },
        { MEDIA_BUS_FMT_VYUY8_1X16, ADV76XX_OP_CH_SEL_RBG, false, true,
          ADV76XX_OP_MODE_SEL_SDR_422_2X | ADV76XX_OP_FORMAT_SEL_8BIT },
        { MEDIA_BUS_FMT_YUYV8_1X16, ADV76XX_OP_CH_SEL_RGB, false, false,
          ADV76XX_OP_MODE_SEL_SDR_422_2X | ADV76XX_OP_FORMAT_SEL_8BIT },
        { MEDIA_BUS_FMT_YVYU8_1X16, ADV76XX_OP_CH_SEL_RGB, false, true,
          ADV76XX_OP_MODE_SEL_SDR_422_2X | ADV76XX_OP_FORMAT_SEL_8BIT },
        { MEDIA_BUS_FMT_UYVY10_1X20, ADV76XX_OP_CH_SEL_RBG, false, false,
          ADV76XX_OP_MODE_SEL_SDR_422_2X | ADV7604_OP_FORMAT_SEL_10BIT },
        { MEDIA_BUS_FMT_VYUY10_1X20, ADV76XX_OP_CH_SEL_RBG, false, true,
          ADV76XX_OP_MODE_SEL_SDR_422_2X | ADV7604_OP_FORMAT_SEL_10BIT },
        { MEDIA_BUS_FMT_YUYV10_1X20, ADV76XX_OP_CH_SEL_RGB, false, false,
          ADV76XX_OP_MODE_SEL_SDR_422_2X | ADV7604_OP_FORMAT_SEL_10BIT },
        { MEDIA_BUS_FMT_YVYU10_1X20, ADV76XX_OP_CH_SEL_RGB, false, true,
          ADV76XX_OP_MODE_SEL_SDR_422_2X | ADV7604_OP_FORMAT_SEL_10BIT },
        { MEDIA_BUS_FMT_UYVY12_1X24, ADV76XX_OP_CH_SEL_RBG, false, false,
          ADV76XX_OP_MODE_SEL_SDR_422_2X | ADV76XX_OP_FORMAT_SEL_12BIT },
        { MEDIA_BUS_FMT_VYUY12_1X24, ADV76XX_OP_CH_SEL_RBG, false, true,
          ADV76XX_OP_MODE_SEL_SDR_422_2X | ADV76XX_OP_FORMAT_SEL_12BIT },
        { MEDIA_BUS_FMT_YUYV12_1X24, ADV76XX_OP_CH_SEL_RGB, false, false,
          ADV76XX_OP_MODE_SEL_SDR_422_2X | ADV76XX_OP_FORMAT_SEL_12BIT },
        { MEDIA_BUS_FMT_YVYU12_1X24, ADV76XX_OP_CH_SEL_RGB, false, true,
          ADV76XX_OP_MODE_SEL_SDR_422_2X | ADV76XX_OP_FORMAT_SEL_12BIT },
};

static const struct adv76xx_format_info adv7611_formats[] = {
        { MEDIA_BUS_FMT_RGB888_1X24, ADV76XX_OP_CH_SEL_RGB, true, false,
          ADV76XX_OP_MODE_SEL_SDR_444 | ADV76XX_OP_FORMAT_SEL_8BIT },
        { MEDIA_BUS_FMT_YUYV8_2X8, ADV76XX_OP_CH_SEL_RGB, false, false,
          ADV76XX_OP_MODE_SEL_SDR_422 | ADV76XX_OP_FORMAT_SEL_8BIT },
        { MEDIA_BUS_FMT_YVYU8_2X8, ADV76XX_OP_CH_SEL_RGB, false, true,
          ADV76XX_OP_MODE_SEL_SDR_422 | ADV76XX_OP_FORMAT_SEL_8BIT },
        { MEDIA_BUS_FMT_YUYV12_2X12, ADV76XX_OP_CH_SEL_RGB, false, false,
          ADV76XX_OP_MODE_SEL_SDR_422 | ADV76XX_OP_FORMAT_SEL_12BIT },
        { MEDIA_BUS_FMT_YVYU12_2X12, ADV76XX_OP_CH_SEL_RGB, false, true,
          ADV76XX_OP_MODE_SEL_SDR_422 | ADV76XX_OP_FORMAT_SEL_12BIT },
        { MEDIA_BUS_FMT_UYVY8_1X16, ADV76XX_OP_CH_SEL_RBG, false, false,
          ADV76XX_OP_MODE_SEL_SDR_422_2X | ADV76XX_OP_FORMAT_SEL_8BIT },
        { MEDIA_BUS_FMT_VYUY8_1X16, ADV76XX_OP_CH_SEL_RBG, false, true,
          ADV76XX_OP_MODE_SEL_SDR_422_2X | ADV76XX_OP_FORMAT_SEL_8BIT },
        { MEDIA_BUS_FMT_YUYV8_1X16, ADV76XX_OP_CH_SEL_RGB, false, false,
          ADV76XX_OP_MODE_SEL_SDR_422_2X | ADV76XX_OP_FORMAT_SEL_8BIT },
        { MEDIA_BUS_FMT_YVYU8_1X16, ADV76XX_OP_CH_SEL_RGB, false, true,
          ADV76XX_OP_MODE_SEL_SDR_422_2X | ADV76XX_OP_FORMAT_SEL_8BIT },
        { MEDIA_BUS_FMT_UYVY12_1X24, ADV76XX_OP_CH_SEL_RBG, false, false,
          ADV76XX_OP_MODE_SEL_SDR_422_2X | ADV76XX_OP_FORMAT_SEL_12BIT },
        { MEDIA_BUS_FMT_VYUY12_1X24, ADV76XX_OP_CH_SEL_RBG, false, true,
          ADV76XX_OP_MODE_SEL_SDR_422_2X | ADV76XX_OP_FORMAT_SEL_12BIT },
        { MEDIA_BUS_FMT_YUYV12_1X24, ADV76XX_OP_CH_SEL_RGB, false, false,
          ADV76XX_OP_MODE_SEL_SDR_422_2X | ADV76XX_OP_FORMAT_SEL_12BIT },
        { MEDIA_BUS_FMT_YVYU12_1X24, ADV76XX_OP_CH_SEL_RGB, false, true,
          ADV76XX_OP_MODE_SEL_SDR_422_2X | ADV76XX_OP_FORMAT_SEL_12BIT },
};

static const struct adv76xx_format_info adv7612_formats[] = {
        { MEDIA_BUS_FMT_RGB888_1X24, ADV76XX_OP_CH_SEL_RGB, true, false,
          ADV76XX_OP_MODE_SEL_SDR_444 | ADV76XX_OP_FORMAT_SEL_8BIT },
        { MEDIA_BUS_FMT_YUYV8_2X8, ADV76XX_OP_CH_SEL_RGB, false, false,
          ADV76XX_OP_MODE_SEL_SDR_422 | ADV76XX_OP_FORMAT_SEL_8BIT },
        { MEDIA_BUS_FMT_YVYU8_2X8, ADV76XX_OP_CH_SEL_RGB, false, true,
          ADV76XX_OP_MODE_SEL_SDR_422 | ADV76XX_OP_FORMAT_SEL_8BIT },
        { MEDIA_BUS_FMT_UYVY8_1X16, ADV76XX_OP_CH_SEL_RBG, false, false,
          ADV76XX_OP_MODE_SEL_SDR_422_2X | ADV76XX_OP_FORMAT_SEL_8BIT },
        { MEDIA_BUS_FMT_VYUY8_1X16, ADV76XX_OP_CH_SEL_RBG, false, true,
          ADV76XX_OP_MODE_SEL_SDR_422_2X | ADV76XX_OP_FORMAT_SEL_8BIT },
        { MEDIA_BUS_FMT_YUYV8_1X16, ADV76XX_OP_CH_SEL_RGB, false, false,
          ADV76XX_OP_MODE_SEL_SDR_422_2X | ADV76XX_OP_FORMAT_SEL_8BIT },
        { MEDIA_BUS_FMT_YVYU8_1X16, ADV76XX_OP_CH_SEL_RGB, false, true,
          ADV76XX_OP_MODE_SEL_SDR_422_2X | ADV76XX_OP_FORMAT_SEL_8BIT },
};

static const struct adv76xx_format_info *
adv76xx_format_info(struct adv76xx_state *state, u32 code)
{
        unsigned int i;

        for (i = 0; i < state->info->nformats; ++i) {
                if (state->info->formats[i].code == code)
                        return &state->info->formats[i];
        }

        return NULL;
}

/* ----------------------------------------------------------------------- */

static inline bool is_analog_input(struct v4l2_subdev *sd)
{
        struct adv76xx_state *state = to_state(sd);

        return state->selected_input == ADV7604_PAD_VGA_RGB ||
               state->selected_input == ADV7604_PAD_VGA_COMP;
}

static inline bool is_digital_input(struct v4l2_subdev *sd)
{
        struct adv76xx_state *state = to_state(sd);

        return state->selected_input == ADV76XX_PAD_HDMI_PORT_A ||
               state->selected_input == ADV7604_PAD_HDMI_PORT_B ||
               state->selected_input == ADV7604_PAD_HDMI_PORT_C ||
               state->selected_input == ADV7604_PAD_HDMI_PORT_D;
}

/* ----------------------------------------------------------------------- */

#ifdef CONFIG_VIDEO_ADV_DEBUG
static void adv76xx_inv_register(struct v4l2_subdev *sd)
{
        v4l2_info(sd, "0x000-0x0ff: IO Map\n");
        v4l2_info(sd, "0x100-0x1ff: AVLink Map\n");
        v4l2_info(sd, "0x200-0x2ff: CEC Map\n");
        v4l2_info(sd, "0x300-0x3ff: InfoFrame Map\n");
        v4l2_info(sd, "0x400-0x4ff: ESDP Map\n");
        v4l2_info(sd, "0x500-0x5ff: DPP Map\n");
        v4l2_info(sd, "0x600-0x6ff: AFE Map\n");
        v4l2_info(sd, "0x700-0x7ff: Repeater Map\n");
        v4l2_info(sd, "0x800-0x8ff: EDID Map\n");
        v4l2_info(sd, "0x900-0x9ff: HDMI Map\n");
        v4l2_info(sd, "0xa00-0xaff: Test Map\n");
        v4l2_info(sd, "0xb00-0xbff: CP Map\n");
        v4l2_info(sd, "0xc00-0xcff: VDP Map\n");
}

static int adv76xx_g_register(struct v4l2_subdev *sd,
                                        struct v4l2_dbg_register *reg)
{
        int ret;

        ret = adv76xx_read_reg(sd, reg->reg);
        if (ret < 0) {
                v4l2_info(sd, "Register %03llx not supported\n", reg->reg);
                adv76xx_inv_register(sd);
                return ret;
        }

        reg->size = 1;
        reg->val = ret;

        return 0;
}

static int adv76xx_s_register(struct v4l2_subdev *sd,
                                        const struct v4l2_dbg_register *reg)
{
        int ret;

        ret = adv76xx_write_reg(sd, reg->reg, reg->val);
        if (ret < 0) {
                v4l2_info(sd, "Register %03llx not supported\n", reg->reg);
                adv76xx_inv_register(sd);
                return ret;
        }

        return 0;
}
#endif

static unsigned int adv7604_read_cable_det(struct v4l2_subdev *sd)
{
        u8 value = io_read(sd, 0x6f);

        return ((value & 0x10) >> 4)
             | ((value & 0x08) >> 2)
             | ((value & 0x04) << 0)
             | ((value & 0x02) << 2);
}

static unsigned int adv7611_read_cable_det(struct v4l2_subdev *sd)
{
        u8 value = io_read(sd, 0x6f);

        return value & 1;
}

static unsigned int adv7612_read_cable_det(struct v4l2_subdev *sd)
{
        /*  Reads CABLE_DET_A_RAW. For input B support, need to
         *  account for bit 7 [MSB] of 0x6a (ie. CABLE_DET_B_RAW)
         */
        u8 value = io_read(sd, 0x6f);

        return value & 1;
}

static int adv76xx_s_detect_tx_5v_ctrl(struct v4l2_subdev *sd)
{
        struct adv76xx_state *state = to_state(sd);
        const struct adv76xx_chip_info *info = state->info;

        return v4l2_ctrl_s_ctrl(state->detect_tx_5v_ctrl,
                                info->read_cable_det(sd));
}

static int find_and_set_predefined_video_timings(struct v4l2_subdev *sd,
                u8 prim_mode,
                const struct adv76xx_video_standards *predef_vid_timings,
                const struct v4l2_dv_timings *timings)
{
        int i;

        for (i = 0; predef_vid_timings[i].timings.bt.width; i++) {
                if (!v4l2_match_dv_timings(timings, &predef_vid_timings[i].timings,
                                        is_digital_input(sd) ? 250000 : 1000000))
                        continue;
                io_write(sd, 0x00, predef_vid_timings[i].vid_std); /* video std */
                io_write(sd, 0x01, (predef_vid_timings[i].v_freq << 4) +
                                prim_mode); /* v_freq and prim mode */
                return 0;
        }

        return -1;
}

static int configure_predefined_video_timings(struct v4l2_subdev *sd,
                struct v4l2_dv_timings *timings)
{
        struct adv76xx_state *state = to_state(sd);
        int err;

        v4l2_dbg(1, debug, sd, "%s", __func__);

        if (adv76xx_has_afe(state)) {
                /* reset to default values */
                io_write(sd, 0x16, 0x43);
                io_write(sd, 0x17, 0x5a);
        }
        /* disable embedded syncs for auto graphics mode */
        cp_write_clr_set(sd, 0x81, 0x10, 0x00);
        cp_write(sd, 0x8f, 0x00);
        cp_write(sd, 0x90, 0x00);
        cp_write(sd, 0xa2, 0x00);
        cp_write(sd, 0xa3, 0x00);
        cp_write(sd, 0xa4, 0x00);
        cp_write(sd, 0xa5, 0x00);
        cp_write(sd, 0xa6, 0x00);
        cp_write(sd, 0xa7, 0x00);
        cp_write(sd, 0xab, 0x00);
        cp_write(sd, 0xac, 0x00);

        if (is_analog_input(sd)) {
                err = find_and_set_predefined_video_timings(sd,
                                0x01, adv7604_prim_mode_comp, timings);
                if (err)
                        err = find_and_set_predefined_video_timings(sd,
                                        0x02, adv7604_prim_mode_gr, timings);
        } else if (is_digital_input(sd)) {
                err = find_and_set_predefined_video_timings(sd,
                                0x05, adv76xx_prim_mode_hdmi_comp, timings);
                if (err)
                        err = find_and_set_predefined_video_timings(sd,
                                        0x06, adv76xx_prim_mode_hdmi_gr, timings);
        } else {
                v4l2_dbg(2, debug, sd, "%s: Unknown port %d selected\n",
                                __func__, state->selected_input);
                err = -1;
        }


        return err;
}

static void configure_custom_video_timings(struct v4l2_subdev *sd,
                const struct v4l2_bt_timings *bt)
{
        struct adv76xx_state *state = to_state(sd);
        u32 width = htotal(bt);
        u32 height = vtotal(bt);
        u16 cp_start_sav = bt->hsync + bt->hbackporch - 4;
        u16 cp_start_eav = width - bt->hfrontporch;
        u16 cp_start_vbi = height - bt->vfrontporch;
        u16 cp_end_vbi = bt->vsync + bt->vbackporch;
        u16 ch1_fr_ll = (((u32)bt->pixelclock / 100) > 0) ?
                ((width * (ADV76XX_FSC / 100)) / ((u32)bt->pixelclock / 100)) : 0;
        const u8 pll[2] = {
                0xc0 | ((width >> 8) & 0x1f),
                width & 0xff
        };

        v4l2_dbg(2, debug, sd, "%s\n", __func__);

        if (is_analog_input(sd)) {
                /* auto graphics */
                io_write(sd, 0x00, 0x07); /* video std */
                io_write(sd, 0x01, 0x02); /* prim mode */
                /* enable embedded syncs for auto graphics mode */
                cp_write_clr_set(sd, 0x81, 0x10, 0x10);

                /* Should only be set in auto-graphics mode [REF_02, p. 91-92] */
                /* setup PLL_DIV_MAN_EN and PLL_DIV_RATIO */
                /* IO-map reg. 0x16 and 0x17 should be written in sequence */
                if (regmap_raw_write(state->regmap[ADV76XX_PAGE_IO],
                                        0x16, pll, 2))
                        v4l2_err(sd, "writing to reg 0x16 and 0x17 failed\n");

                /* active video - horizontal timing */

                cp_write(sd, 0xa2, (cp_start_sav >> 4) & 0xff);
                cp_write(sd, 0xa3, ((cp_start_sav & 0x0f) << 4) |
                                   ((cp_start_eav >> 8) & 0x0f));
                cp_write(sd, 0xa4, cp_start_eav & 0xff);

                /* active video - vertical timing */
                cp_write(sd, 0xa5, (cp_start_vbi >> 4) & 0xff);
                cp_write(sd, 0xa6, ((cp_start_vbi & 0xf) << 4) |
                                   ((cp_end_vbi >> 8) & 0xf));
                cp_write(sd, 0xa7, cp_end_vbi & 0xff);
        } else if (is_digital_input(sd)) {
                /* set default prim_mode/vid_std for HDMI
                   according to [REF_03, c. 4.2] */
                io_write(sd, 0x00, 0x02); /* video std */
                io_write(sd, 0x01, 0x06); /* prim mode */
        } else {
                v4l2_dbg(2, debug, sd, "%s: Unknown port %d selected\n",
                                __func__, state->selected_input);
        }

        cp_write(sd, 0x8f, (ch1_fr_ll >> 8) & 0x7);
        cp_write(sd, 0x90, ch1_fr_ll & 0xff);
        cp_write(sd, 0xab, (height >> 4) & 0xff);
        cp_write(sd, 0xac, (height & 0x0f) << 4);
}

static void adv76xx_set_offset(struct v4l2_subdev *sd, bool auto_offset, u16 offset_a, u16 offset_b, u16 offset_c)
{
        struct adv76xx_state *state = to_state(sd);
        u8 offset_buf[4];

        if (auto_offset) {
                offset_a = 0x3ff;
                offset_b = 0x3ff;
                offset_c = 0x3ff;
        }

        v4l2_dbg(2, debug, sd, "%s: %s offset: a = 0x%x, b = 0x%x, c = 0x%x\n",
                        __func__, auto_offset ? "Auto" : "Manual",
                        offset_a, offset_b, offset_c);

        offset_buf[0] = (cp_read(sd, 0x77) & 0xc0) | ((offset_a & 0x3f0) >> 4);
        offset_buf[1] = ((offset_a & 0x00f) << 4) | ((offset_b & 0x3c0) >> 6);
        offset_buf[2] = ((offset_b & 0x03f) << 2) | ((offset_c & 0x300) >> 8);
        offset_buf[3] = offset_c & 0x0ff;

        /* Registers must be written in this order with no i2c access in between */
        if (regmap_raw_write(state->regmap[ADV76XX_PAGE_CP],
                        0x77, offset_buf, 4))
                v4l2_err(sd, "%s: i2c error writing to CP reg 0x77, 0x78, 0x79, 0x7a\n", __func__);
}

static void adv76xx_set_gain(struct v4l2_subdev *sd, bool auto_gain, u16 gain_a, u16 gain_b, u16 gain_c)
{
        struct adv76xx_state *state = to_state(sd);
        u8 gain_buf[4];
        u8 gain_man = 1;
        u8 agc_mode_man = 1;

        if (auto_gain) {
                gain_man = 0;
                agc_mode_man = 0;
                gain_a = 0x100;
                gain_b = 0x100;
                gain_c = 0x100;
        }

        v4l2_dbg(2, debug, sd, "%s: %s gain: a = 0x%x, b = 0x%x, c = 0x%x\n",
                        __func__, auto_gain ? "Auto" : "Manual",
                        gain_a, gain_b, gain_c);

        gain_buf[0] = ((gain_man << 7) | (agc_mode_man << 6) | ((gain_a & 0x3f0) >> 4));
        gain_buf[1] = (((gain_a & 0x00f) << 4) | ((gain_b & 0x3c0) >> 6));
        gain_buf[2] = (((gain_b & 0x03f) << 2) | ((gain_c & 0x300) >> 8));
        gain_buf[3] = ((gain_c & 0x0ff));

        /* Registers must be written in this order with no i2c access in between */
        if (regmap_raw_write(state->regmap[ADV76XX_PAGE_CP],
                             0x73, gain_buf, 4))
                v4l2_err(sd, "%s: i2c error writing to CP reg 0x73, 0x74, 0x75, 0x76\n", __func__);
}

static void set_rgb_quantization_range(struct v4l2_subdev *sd)
{
        struct adv76xx_state *state = to_state(sd);
        bool rgb_output = io_read(sd, 0x02) & 0x02;
        bool hdmi_signal = hdmi_read(sd, 0x05) & 0x80;

        v4l2_dbg(2, debug, sd, "%s: RGB quantization range: %d, RGB out: %d, HDMI: %d\n",
                        __func__, state->rgb_quantization_range,
                        rgb_output, hdmi_signal);

        adv76xx_set_gain(sd, true, 0x0, 0x0, 0x0);
        adv76xx_set_offset(sd, true, 0x0, 0x0, 0x0);

        switch (state->rgb_quantization_range) {
        case V4L2_DV_RGB_RANGE_AUTO:
                if (state->selected_input == ADV7604_PAD_VGA_RGB) {
                        /* Receiving analog RGB signal
                         * Set RGB full range (0-255) */
                        io_write_clr_set(sd, 0x02, 0xf0, 0x10);
                        break;
                }

                if (state->selected_input == ADV7604_PAD_VGA_COMP) {
                        /* Receiving analog YPbPr signal
                         * Set automode */
                        io_write_clr_set(sd, 0x02, 0xf0, 0xf0);
                        break;
                }

                if (hdmi_signal) {
                        /* Receiving HDMI signal
                         * Set automode */
                        io_write_clr_set(sd, 0x02, 0xf0, 0xf0);
                        break;
                }

                /* Receiving DVI-D signal
                 * ADV7604 selects RGB limited range regardless of
                 * input format (CE/IT) in automatic mode */
                if (state->timings.bt.flags & V4L2_DV_FL_IS_CE_VIDEO) {
                        /* RGB limited range (16-235) */
                        io_write_clr_set(sd, 0x02, 0xf0, 0x00);
                } else {
                        /* RGB full range (0-255) */
                        io_write_clr_set(sd, 0x02, 0xf0, 0x10);

                        if (is_digital_input(sd) && rgb_output) {
                                adv76xx_set_offset(sd, false, 0x40, 0x40, 0x40);
                        } else {
                                adv76xx_set_gain(sd, false, 0xe0, 0xe0, 0xe0);
                                adv76xx_set_offset(sd, false, 0x70, 0x70, 0x70);
                        }
                }
                break;
        case V4L2_DV_RGB_RANGE_LIMITED:
                if (state->selected_input == ADV7604_PAD_VGA_COMP) {
                        /* YCrCb limited range (16-235) */
                        io_write_clr_set(sd, 0x02, 0xf0, 0x20);
                        break;
                }

                /* RGB limited range (16-235) */
                io_write_clr_set(sd, 0x02, 0xf0, 0x00);

                break;
        case V4L2_DV_RGB_RANGE_FULL:
                if (state->selected_input == ADV7604_PAD_VGA_COMP) {
                        /* YCrCb full range (0-255) */
                        io_write_clr_set(sd, 0x02, 0xf0, 0x60);
                        break;
                }

                /* RGB full range (0-255) */
                io_write_clr_set(sd, 0x02, 0xf0, 0x10);

                if (is_analog_input(sd) || hdmi_signal)
                        break;

                /* Adjust gain/offset for DVI-D signals only */
                if (rgb_output) {
                        adv76xx_set_offset(sd, false, 0x40, 0x40, 0x40);
                } else {
                        adv76xx_set_gain(sd, false, 0xe0, 0xe0, 0xe0);
                        adv76xx_set_offset(sd, false, 0x70, 0x70, 0x70);
                }
                break;
        }
}

static int adv76xx_s_ctrl(struct v4l2_ctrl *ctrl)
{
        struct v4l2_subdev *sd =
                &container_of(ctrl->handler, struct adv76xx_state, hdl)->sd;

        struct adv76xx_state *state = to_state(sd);

        switch (ctrl->id) {
        case V4L2_CID_BRIGHTNESS:
                cp_write(sd, 0x3c, ctrl->val);
                return 0;
        case V4L2_CID_CONTRAST:
                cp_write(sd, 0x3a, ctrl->val);
                return 0;
        case V4L2_CID_SATURATION:
                cp_write(sd, 0x3b, ctrl->val);
                return 0;
        case V4L2_CID_HUE:
                cp_write(sd, 0x3d, ctrl->val);
                return 0;
        case  V4L2_CID_DV_RX_RGB_RANGE:
                state->rgb_quantization_range = ctrl->val;
                set_rgb_quantization_range(sd);
                return 0;
        case V4L2_CID_ADV_RX_ANALOG_SAMPLING_PHASE:
                if (!adv76xx_has_afe(state))
                        return -EINVAL;
                /* Set the analog sampling phase. This is needed to find the
                   best sampling phase for analog video: an application or
                   driver has to try a number of phases and analyze the picture
                   quality before settling on the best performing phase. */
                afe_write(sd, 0xc8, ctrl->val);
                return 0;
        case V4L2_CID_ADV_RX_FREE_RUN_COLOR_MANUAL:
                /* Use the default blue color for free running mode,
                   or supply your own. */
                cp_write_clr_set(sd, 0xbf, 0x04, ctrl->val << 2);
                return 0;
        case V4L2_CID_ADV_RX_FREE_RUN_COLOR:
                cp_write(sd, 0xc0, (ctrl->val & 0xff0000) >> 16);
                cp_write(sd, 0xc1, (ctrl->val & 0x00ff00) >> 8);
                cp_write(sd, 0xc2, (u8)(ctrl->val & 0x0000ff));
                return 0;
        }
        return -EINVAL;
}

/* ----------------------------------------------------------------------- */

static inline bool no_power(struct v4l2_subdev *sd)
{
        /* Entire chip or CP powered off */
        return io_read(sd, 0x0c) & 0x24;
}

static inline bool no_signal_tmds(struct v4l2_subdev *sd)
{
        struct adv76xx_state *state = to_state(sd);

        return !(io_read(sd, 0x6a) & (0x10 >> state->selected_input));
}

static inline bool no_lock_tmds(struct v4l2_subdev *sd)
{
        struct adv76xx_state *state = to_state(sd);
        const struct adv76xx_chip_info *info = state->info;

        return (io_read(sd, 0x6a) & info->tdms_lock_mask) != info->tdms_lock_mask;
}

static inline bool is_hdmi(struct v4l2_subdev *sd)
{
        return hdmi_read(sd, 0x05) & 0x80;
}

static inline bool no_lock_sspd(struct v4l2_subdev *sd)
{
        struct adv76xx_state *state = to_state(sd);

        /*
         * Chips without a AFE don't expose registers for the SSPD, so just assume
         * that we have a lock.
         */
        if (adv76xx_has_afe(state))
                return false;

        /* TODO channel 2 */
        return ((cp_read(sd, 0xb5) & 0xd0) != 0xd0);
}

static inline bool no_lock_stdi(struct v4l2_subdev *sd)
{
        /* TODO channel 2 */
        return !(cp_read(sd, 0xb1) & 0x80);
}

static inline bool no_signal(struct v4l2_subdev *sd)
{
        bool ret;

        ret = no_power(sd);

        ret |= no_lock_stdi(sd);
        ret |= no_lock_sspd(sd);

        if (is_digital_input(sd)) {
                ret |= no_lock_tmds(sd);
                ret |= no_signal_tmds(sd);
        }

        return ret;
}

static inline bool no_lock_cp(struct v4l2_subdev *sd)
{
        struct adv76xx_state *state = to_state(sd);

        if (!adv76xx_has_afe(state))
                return false;

        /* CP has detected a non standard number of lines on the incoming
           video compared to what it is configured to receive by s_dv_timings */
        return io_read(sd, 0x12) & 0x01;
}

static inline bool in_free_run(struct v4l2_subdev *sd)
{
        return cp_read(sd, 0xff) & 0x10;
}

static int adv76xx_g_input_status(struct v4l2_subdev *sd, u32 *status)
{
        *status = 0;
        *status |= no_power(sd) ? V4L2_IN_ST_NO_POWER : 0;
        *status |= no_signal(sd) ? V4L2_IN_ST_NO_SIGNAL : 0;
        if (!in_free_run(sd) && no_lock_cp(sd))
                *status |= is_digital_input(sd) ?
                           V4L2_IN_ST_NO_SYNC : V4L2_IN_ST_NO_H_LOCK;

        v4l2_dbg(1, debug, sd, "%s: status = 0x%x\n", __func__, *status);

        return 0;
}

/* ----------------------------------------------------------------------- */

struct stdi_readback {
        u16 bl, lcf, lcvs;
        u8 hs_pol, vs_pol;
        bool interlaced;
};

static int stdi2dv_timings(struct v4l2_subdev *sd,
                struct stdi_readback *stdi,
                struct v4l2_dv_timings *timings)
{
        struct adv76xx_state *state = to_state(sd);
        u32 hfreq = (ADV76XX_FSC * 8) / stdi->bl;
        u32 pix_clk;
        int i;

        for (i = 0; adv76xx_timings[i].bt.height; i++) {
                if (vtotal(&adv76xx_timings[i].bt) != stdi->lcf + 1)
                        continue;
                if (adv76xx_timings[i].bt.vsync != stdi->lcvs)
                        continue;

                pix_clk = hfreq * htotal(&adv76xx_timings[i].bt);

                if ((pix_clk < adv76xx_timings[i].bt.pixelclock + 1000000) &&
                    (pix_clk > adv76xx_timings[i].bt.pixelclock - 1000000)) {
                        *timings = adv76xx_timings[i];
                        return 0;
                }
        }

        if (v4l2_detect_cvt(stdi->lcf + 1, hfreq, stdi->lcvs, 0,
                        (stdi->hs_pol == '+' ? V4L2_DV_HSYNC_POS_POL : 0) |
                        (stdi->vs_pol == '+' ? V4L2_DV_VSYNC_POS_POL : 0),
                        false, timings))
                return 0;
        if (v4l2_detect_gtf(stdi->lcf + 1, hfreq, stdi->lcvs,
                        (stdi->hs_pol == '+' ? V4L2_DV_HSYNC_POS_POL : 0) |
                        (stdi->vs_pol == '+' ? V4L2_DV_VSYNC_POS_POL : 0),
                        false, state->aspect_ratio, timings))
                return 0;

        v4l2_dbg(2, debug, sd,
                "%s: No format candidate found for lcvs = %d, lcf=%d, bl = %d, %chsync, %cvsync\n",
                __func__, stdi->lcvs, stdi->lcf, stdi->bl,
                stdi->hs_pol, stdi->vs_pol);
        return -1;
}


static int read_stdi(struct v4l2_subdev *sd, struct stdi_readback *stdi)
{
        struct adv76xx_state *state = to_state(sd);
        const struct adv76xx_chip_info *info = state->info;
        u8 polarity;

        if (no_lock_stdi(sd) || no_lock_sspd(sd)) {
                v4l2_dbg(2, debug, sd, "%s: STDI and/or SSPD not locked\n", __func__);
                return -1;
        }

        /* read STDI */
        stdi->bl = cp_read16(sd, 0xb1, 0x3fff);
        stdi->lcf = cp_read16(sd, info->lcf_reg, 0x7ff);
        stdi->lcvs = cp_read(sd, 0xb3) >> 3;
        stdi->interlaced = io_read(sd, 0x12) & 0x10;

        if (adv76xx_has_afe(state)) {
                /* read SSPD */
                polarity = cp_read(sd, 0xb5);
                if ((polarity & 0x03) == 0x01) {
                        stdi->hs_pol = polarity & 0x10
                                     ? (polarity & 0x08 ? '+' : '-') : 'x';
                        stdi->vs_pol = polarity & 0x40
                                     ? (polarity & 0x20 ? '+' : '-') : 'x';
                } else {
                        stdi->hs_pol = 'x';
                        stdi->vs_pol = 'x';
                }
        } else {
                polarity = hdmi_read(sd, 0x05);
                stdi->hs_pol = polarity & 0x20 ? '+' : '-';
                stdi->vs_pol = polarity & 0x10 ? '+' : '-';
        }

        if (no_lock_stdi(sd) || no_lock_sspd(sd)) {
                v4l2_dbg(2, debug, sd,
                        "%s: signal lost during readout of STDI/SSPD\n", __func__);
                return -1;
        }

        if (stdi->lcf < 239 || stdi->bl < 8 || stdi->bl == 0x3fff) {
                v4l2_dbg(2, debug, sd, "%s: invalid signal\n", __func__);
                memset(stdi, 0, sizeof(struct stdi_readback));
                return -1;
        }

        v4l2_dbg(2, debug, sd,
                "%s: lcf (frame height - 1) = %d, bl = %d, lcvs (vsync) = %d, %chsync, %cvsync, %s\n",
                __func__, stdi->lcf, stdi->bl, stdi->lcvs,
                stdi->hs_pol, stdi->vs_pol,
                stdi->interlaced ? "interlaced" : "progressive");

        return 0;
}

static int adv76xx_enum_dv_timings(struct v4l2_subdev *sd,
                        struct v4l2_enum_dv_timings *timings)
{
        struct adv76xx_state *state = to_state(sd);

        if (timings->index >= ARRAY_SIZE(adv76xx_timings) - 1)
                return -EINVAL;

        if (timings->pad >= state->source_pad)
                return -EINVAL;

        memset(timings->reserved, 0, sizeof(timings->reserved));
        timings->timings = adv76xx_timings[timings->index];
        return 0;
}

static int adv76xx_dv_timings_cap(struct v4l2_subdev *sd,
                        struct v4l2_dv_timings_cap *cap)
{
        struct adv76xx_state *state = to_state(sd);

        if (cap->pad >= state->source_pad)
                return -EINVAL;

        cap->type = V4L2_DV_BT_656_1120;
        cap->bt.max_width = 1920;
        cap->bt.max_height = 1200;
        cap->bt.min_pixelclock = 25000000;

        switch (cap->pad) {
        case ADV76XX_PAD_HDMI_PORT_A:
        case ADV7604_PAD_HDMI_PORT_B:
        case ADV7604_PAD_HDMI_PORT_C:
        case ADV7604_PAD_HDMI_PORT_D:
                cap->bt.max_pixelclock = 225000000;
                break;
        case ADV7604_PAD_VGA_RGB:
        case ADV7604_PAD_VGA_COMP:
        default:
                cap->bt.max_pixelclock = 170000000;
                break;
        }

        cap->bt.standards = V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
                         V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT;
        cap->bt.capabilities = V4L2_DV_BT_CAP_PROGRESSIVE |
                V4L2_DV_BT_CAP_REDUCED_BLANKING | V4L2_DV_BT_CAP_CUSTOM;
        return 0;
}

/* Fill the optional fields .standards and .flags in struct v4l2_dv_timings
   if the format is listed in adv76xx_timings[] */
static void adv76xx_fill_optional_dv_timings_fields(struct v4l2_subdev *sd,
                struct v4l2_dv_timings *timings)
{
        int i;

        for (i = 0; adv76xx_timings[i].bt.width; i++) {
                if (v4l2_match_dv_timings(timings, &adv76xx_timings[i],
                                        is_digital_input(sd) ? 250000 : 1000000)) {
                        *timings = adv76xx_timings[i];
                        break;
                }
        }
}

static unsigned int adv7604_read_hdmi_pixelclock(struct v4l2_subdev *sd)
{
        unsigned int freq;
        int a, b;

        a = hdmi_read(sd, 0x06);
        b = hdmi_read(sd, 0x3b);
        if (a < 0 || b < 0)
                return 0;
        freq =  a * 1000000 + ((b & 0x30) >> 4) * 250000;

        if (is_hdmi(sd)) {
                /* adjust for deep color mode */
                unsigned bits_per_channel = ((hdmi_read(sd, 0x0b) & 0x60) >> 4) + 8;

                freq = freq * 8 / bits_per_channel;
        }

        return freq;
}

static unsigned int adv7611_read_hdmi_pixelclock(struct v4l2_subdev *sd)
{
        int a, b;

        a = hdmi_read(sd, 0x51);
        b = hdmi_read(sd, 0x52);
        if (a < 0 || b < 0)
                return 0;
        return ((a << 1) | (b >> 7)) * 1000000 + (b & 0x7f) * 1000000 / 128;
}

static int adv76xx_query_dv_timings(struct v4l2_subdev *sd,
                        struct v4l2_dv_timings *timings)
{
        struct adv76xx_state *state = to_state(sd);
        const struct adv76xx_chip_info *info = state->info;
        struct v4l2_bt_timings *bt = &timings->bt;
        struct stdi_readback stdi;

        if (!timings)
                return -EINVAL;

        memset(timings, 0, sizeof(struct v4l2_dv_timings));

        if (no_signal(sd)) {
                state->restart_stdi_once = true;
                v4l2_dbg(1, debug, sd, "%s: no valid signal\n", __func__);
                return -ENOLINK;
        }

        /* read STDI */
        if (read_stdi(sd, &stdi)) {
                v4l2_dbg(1, debug, sd, "%s: STDI/SSPD not locked\n", __func__);
                return -ENOLINK;
        }
        bt->interlaced = stdi.interlaced ?
                V4L2_DV_INTERLACED : V4L2_DV_PROGRESSIVE;

        if (is_digital_input(sd)) {
                timings->type = V4L2_DV_BT_656_1120;

                bt->width = hdmi_read16(sd, 0x07, info->linewidth_mask);
                bt->height = hdmi_read16(sd, 0x09, info->field0_height_mask);
                bt->pixelclock = info->read_hdmi_pixelclock(sd);
                bt->hfrontporch = hdmi_read16(sd, 0x20, info->hfrontporch_mask);
                bt->hsync = hdmi_read16(sd, 0x22, info->hsync_mask);
                bt->hbackporch = hdmi_read16(sd, 0x24, info->hbackporch_mask);
                bt->vfrontporch = hdmi_read16(sd, 0x2a,
                        info->field0_vfrontporch_mask) / 2;
                bt->vsync = hdmi_read16(sd, 0x2e, info->field0_vsync_mask) / 2;
                bt->vbackporch = hdmi_read16(sd, 0x32,
                        info->field0_vbackporch_mask) / 2;
                bt->polarities = ((hdmi_read(sd, 0x05) & 0x10) ? V4L2_DV_VSYNC_POS_POL : 0) |
                        ((hdmi_read(sd, 0x05) & 0x20) ? V4L2_DV_HSYNC_POS_POL : 0);
                if (bt->interlaced == V4L2_DV_INTERLACED) {
                        bt->height += hdmi_read16(sd, 0x0b,
                                info->field1_height_mask);
                        bt->il_vfrontporch = hdmi_read16(sd, 0x2c,
                                info->field1_vfrontporch_mask) / 2;
                        bt->il_vsync = hdmi_read16(sd, 0x30,
                                info->field1_vsync_mask) / 2;
                        bt->il_vbackporch = hdmi_read16(sd, 0x34,
                                info->field1_vbackporch_mask) / 2;
                }
                adv76xx_fill_optional_dv_timings_fields(sd, timings);
        } else {
                /* find format
                 * Since LCVS values are inaccurate [REF_03, p. 275-276],
                 * stdi2dv_timings() is called with lcvs +-1 if the first attempt fails.
                 */
                if (!stdi2dv_timings(sd, &stdi, timings))
                        goto found;
                stdi.lcvs += 1;
                v4l2_dbg(1, debug, sd, "%s: lcvs + 1 = %d\n", __func__, stdi.lcvs);
                if (!stdi2dv_timings(sd, &stdi, timings))
                        goto found;
                stdi.lcvs -= 2;
                v4l2_dbg(1, debug, sd, "%s: lcvs - 1 = %d\n", __func__, stdi.lcvs);
                if (stdi2dv_timings(sd, &stdi, timings)) {
                        /*
                         * The STDI block may measure wrong values, especially
                         * for lcvs and lcf. If the driver can not find any
                         * valid timing, the STDI block is restarted to measure
                         * the video timings again. The function will return an
                         * error, but the restart of STDI will generate a new
                         * STDI interrupt and the format detection process will
                         * restart.
                         */
                        if (state->restart_stdi_once) {
                                v4l2_dbg(1, debug, sd, "%s: restart STDI\n", __func__);
                                /* TODO restart STDI for Sync Channel 2 */
                                /* enter one-shot mode */
                                cp_write_clr_set(sd, 0x86, 0x06, 0x00);
                                /* trigger STDI restart */
                                cp_write_clr_set(sd, 0x86, 0x06, 0x04);
                                /* reset to continuous mode */
                                cp_write_clr_set(sd, 0x86, 0x06, 0x02);
                                state->restart_stdi_once = false;
                                return -ENOLINK;
                        }
                        v4l2_dbg(1, debug, sd, "%s: format not supported\n", __func__);
                        return -ERANGE;
                }
                state->restart_stdi_once = true;
        }
found:

        if (no_signal(sd)) {
                v4l2_dbg(1, debug, sd, "%s: signal lost during readout\n", __func__);
                memset(timings, 0, sizeof(struct v4l2_dv_timings));
                return -ENOLINK;
        }

        if ((is_analog_input(sd) && bt->pixelclock > 170000000) ||
                        (is_digital_input(sd) && bt->pixelclock > 225000000)) {
                v4l2_dbg(1, debug, sd, "%s: pixelclock out of range %d\n",
                                __func__, (u32)bt->pixelclock);
                return -ERANGE;
        }

        if (debug > 1)
                v4l2_print_dv_timings(sd->name, "adv76xx_query_dv_timings: ",
                                      timings, true);

        return 0;
}

static int adv76xx_s_dv_timings(struct v4l2_subdev *sd,
                struct v4l2_dv_timings *timings)
{
        struct adv76xx_state *state = to_state(sd);
        struct v4l2_bt_timings *bt;
        int err;

        if (!timings)
                return -EINVAL;

        if (v4l2_match_dv_timings(&state->timings, timings, 0)) {
                v4l2_dbg(1, debug, sd, "%s: no change\n", __func__);
                return 0;
        }

        bt = &timings->bt;

        if ((is_analog_input(sd) && bt->pixelclock > 170000000) ||
                        (is_digital_input(sd) && bt->pixelclock > 225000000)) {
                v4l2_dbg(1, debug, sd, "%s: pixelclock out of range %d\n",
                                __func__, (u32)bt->pixelclock);
                return -ERANGE;
        }

        adv76xx_fill_optional_dv_timings_fields(sd, timings);

        state->timings = *timings;

        cp_write_clr_set(sd, 0x91, 0x40, bt->interlaced ? 0x40 : 0x00);

        /* Use prim_mode and vid_std when available */
        err = configure_predefined_video_timings(sd, timings);
        if (err) {
                /* custom settings when the video format
                 does not have prim_mode/vid_std */
                configure_custom_video_timings(sd, bt);
        }

        set_rgb_quantization_range(sd);

        if (debug > 1)
                v4l2_print_dv_timings(sd->name, "adv76xx_s_dv_timings: ",
                                      timings, true);
        return 0;
}

static int adv76xx_g_dv_timings(struct v4l2_subdev *sd,
                struct v4l2_dv_timings *timings)
{
        struct adv76xx_state *state = to_state(sd);

        *timings = state->timings;
        return 0;
}

static void adv7604_set_termination(struct v4l2_subdev *sd, bool enable)
{
        hdmi_write(sd, 0x01, enable ? 0x00 : 0x78);
}

static void adv7611_set_termination(struct v4l2_subdev *sd, bool enable)
{
        hdmi_write(sd, 0x83, enable ? 0xfe : 0xff);
}

static void enable_input(struct v4l2_subdev *sd)
{
        struct adv76xx_state *state = to_state(sd);

        if (is_analog_input(sd)) {
                io_write(sd, 0x15, 0xb0);   /* Disable Tristate of Pins (no audio) */
        } else if (is_digital_input(sd)) {
                hdmi_write_clr_set(sd, 0x00, 0x03, state->selected_input);
                state->info->set_termination(sd, true);
                io_write(sd, 0x15, 0xa0);   /* Disable Tristate of Pins */
                hdmi_write_clr_set(sd, 0x1a, 0x10, 0x00); /* Unmute audio */
        } else {
                v4l2_dbg(2, debug, sd, "%s: Unknown port %d selected\n",
                                __func__, state->selected_input);
        }
}

static void disable_input(struct v4l2_subdev *sd)
{
        struct adv76xx_state *state = to_state(sd);

        hdmi_write_clr_set(sd, 0x1a, 0x10, 0x10); /* Mute audio */
        msleep(16); /* 512 samples with >= 32 kHz sample rate [REF_03, c. 7.16.10] */
        io_write(sd, 0x15, 0xbe);   /* Tristate all outputs from video core */
        state->info->set_termination(sd, false);
}

static void select_input(struct v4l2_subdev *sd)
{
        struct adv76xx_state *state = to_state(sd);
        const struct adv76xx_chip_info *info = state->info;

        if (is_analog_input(sd)) {
                adv76xx_write_reg_seq(sd, info->recommended_settings[0]);

                afe_write(sd, 0x00, 0x08); /* power up ADC */
                afe_write(sd, 0x01, 0x06); /* power up Analog Front End */
                afe_write(sd, 0xc8, 0x00); /* phase control */
        } else if (is_digital_input(sd)) {
                hdmi_write(sd, 0x00, state->selected_input & 0x03);

                adv76xx_write_reg_seq(sd, info->recommended_settings[1]);

                if (adv76xx_has_afe(state)) {
                        afe_write(sd, 0x00, 0xff); /* power down ADC */
                        afe_write(sd, 0x01, 0xfe); /* power down Analog Front End */
                        afe_write(sd, 0xc8, 0x40); /* phase control */
                }

                cp_write(sd, 0x3e, 0x00); /* CP core pre-gain control */
                cp_write(sd, 0xc3, 0x39); /* CP coast control. Graphics mode */
                cp_write(sd, 0x40, 0x80); /* CP core pre-gain control. Graphics mode */
        } else {
                v4l2_dbg(2, debug, sd, "%s: Unknown port %d selected\n",
                                __func__, state->selected_input);
        }
}

static int adv76xx_s_routing(struct v4l2_subdev *sd,
                u32 input, u32 output, u32 config)
{
        struct adv76xx_state *state = to_state(sd);

        v4l2_dbg(2, debug, sd, "%s: input %d, selected input %d",
                        __func__, input, state->selected_input);

        if (input == state->selected_input)
                return 0;

        if (input > state->info->max_port)
                return -EINVAL;

        state->selected_input = input;

        disable_input(sd);
        select_input(sd);
        enable_input(sd);

        v4l2_subdev_notify_event(sd, &adv76xx_ev_fmt);

        return 0;
}

static int adv76xx_enum_mbus_code(struct v4l2_subdev *sd,
                                  struct v4l2_subdev_pad_config *cfg,
                                  struct v4l2_subdev_mbus_code_enum *code)
{
        struct adv76xx_state *state = to_state(sd);

        if (code->index >= state->info->nformats)
                return -EINVAL;

        code->code = state->info->formats[code->index].code;

        return 0;
}

static void adv76xx_fill_format(struct adv76xx_state *state,
                                struct v4l2_mbus_framefmt *format)
{
        memset(format, 0, sizeof(*format));

        format->width = state->timings.bt.width;
        format->height = state->timings.bt.height;
        format->field = V4L2_FIELD_NONE;
        format->colorspace = V4L2_COLORSPACE_SRGB;

        if (state->timings.bt.flags & V4L2_DV_FL_IS_CE_VIDEO)
                format->colorspace = (state->timings.bt.height <= 576) ?
                        V4L2_COLORSPACE_SMPTE170M : V4L2_COLORSPACE_REC709;
}

/*
 * Compute the op_ch_sel value required to obtain on the bus the component order
 * corresponding to the selected format taking into account bus reordering
 * applied by the board at the output of the device.
 *
 * The following table gives the op_ch_value from the format component order
 * (expressed as op_ch_sel value in column) and the bus reordering (expressed as
 * adv76xx_bus_order value in row).
 *
 *           |  GBR(0)  GRB(1)  BGR(2)  RGB(3)  BRG(4)  RBG(5)
 * ----------+-------------------------------------------------
 * RGB (NOP) |  GBR     GRB     BGR     RGB     BRG     RBG
 * GRB (1-2) |  BGR     RGB     GBR     GRB     RBG     BRG
 * RBG (2-3) |  GRB     GBR     BRG     RBG     BGR     RGB
 * BGR (1-3) |  RBG     BRG     RGB     BGR     GRB     GBR
 * BRG (ROR) |  BRG     RBG     GRB     GBR     RGB     BGR
 * GBR (ROL) |  RGB     BGR     RBG     BRG     GBR     GRB
 */
static unsigned int adv76xx_op_ch_sel(struct adv76xx_state *state)
{
#define _SEL(a,b,c,d,e,f)       { \
        ADV76XX_OP_CH_SEL_##a, ADV76XX_OP_CH_SEL_##b, ADV76XX_OP_CH_SEL_##c, \
        ADV76XX_OP_CH_SEL_##d, ADV76XX_OP_CH_SEL_##e, ADV76XX_OP_CH_SEL_##f }
#define _BUS(x)                 [ADV7604_BUS_ORDER_##x]

        static const unsigned int op_ch_sel[6][6] = {
                _BUS(RGB) /* NOP */ = _SEL(GBR, GRB, BGR, RGB, BRG, RBG),
                _BUS(GRB) /* 1-2 */ = _SEL(BGR, RGB, GBR, GRB, RBG, BRG),
                _BUS(RBG) /* 2-3 */ = _SEL(GRB, GBR, BRG, RBG, BGR, RGB),
                _BUS(BGR) /* 1-3 */ = _SEL(RBG, BRG, RGB, BGR, GRB, GBR),
                _BUS(BRG) /* ROR */ = _SEL(BRG, RBG, GRB, GBR, RGB, BGR),
                _BUS(GBR) /* ROL */ = _SEL(RGB, BGR, RBG, BRG, GBR, GRB),
        };

        return op_ch_sel[state->pdata.bus_order][state->format->op_ch_sel >> 5];
}

static void adv76xx_setup_format(struct adv76xx_state *state)
{
        struct v4l2_subdev *sd = &state->sd;

        io_write_clr_set(sd, 0x02, 0x02,
                        state->format->rgb_out ? ADV76XX_RGB_OUT : 0);
        io_write(sd, 0x03, state->format->op_format_sel |
                 state->pdata.op_format_mode_sel);
        io_write_clr_set(sd, 0x04, 0xe0, adv76xx_op_ch_sel(state));
        io_write_clr_set(sd, 0x05, 0x01,
                        state->format->swap_cb_cr ? ADV76XX_OP_SWAP_CB_CR : 0);
}

static int adv76xx_get_format(struct v4l2_subdev *sd,
                              struct v4l2_subdev_pad_config *cfg,
                              struct v4l2_subdev_format *format)
{
        struct adv76xx_state *state = to_state(sd);

        if (format->pad != state->source_pad)
                return -EINVAL;

        adv76xx_fill_format(state, &format->format);

        if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
                struct v4l2_mbus_framefmt *fmt;

                fmt = v4l2_subdev_get_try_format(sd, cfg, format->pad);
                format->format.code = fmt->code;
        } else {
                format->format.code = state->format->code;
        }

        return 0;
}

static int adv76xx_set_format(struct v4l2_subdev *sd,
                              struct v4l2_subdev_pad_config *cfg,
                              struct v4l2_subdev_format *format)
{
        struct adv76xx_state *state = to_state(sd);
        const struct adv76xx_format_info *info;

        if (format->pad != state->source_pad)
                return -EINVAL;

        info = adv76xx_format_info(state, format->format.code);
        if (info == NULL)
                info = adv76xx_format_info(state, MEDIA_BUS_FMT_YUYV8_2X8);

        adv76xx_fill_format(state, &format->format);
        format->format.code = info->code;

        if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
                struct v4l2_mbus_framefmt *fmt;

                fmt = v4l2_subdev_get_try_format(sd, cfg, format->pad);
                fmt->code = format->format.code;
        } else {
                state->format = info;
                adv76xx_setup_format(state);
        }

        return 0;
}

static int adv76xx_isr(struct v4l2_subdev *sd, u32 status, bool *handled)
{
        struct adv76xx_state *state = to_state(sd);
        const struct adv76xx_chip_info *info = state->info;
        const u8 irq_reg_0x43 = io_read(sd, 0x43);
        const u8 irq_reg_0x6b = io_read(sd, 0x6b);
        const u8 irq_reg_0x70 = io_read(sd, 0x70);
        u8 fmt_change_digital;
        u8 fmt_change;
        u8 tx_5v;

        if (irq_reg_0x43)
                io_write(sd, 0x44, irq_reg_0x43);
        if (irq_reg_0x70)
                io_write(sd, 0x71, irq_reg_0x70);
        if (irq_reg_0x6b)
                io_write(sd, 0x6c, irq_reg_0x6b);

        v4l2_dbg(2, debug, sd, "%s: ", __func__);

        /* format change */
        fmt_change = irq_reg_0x43 & 0x98;
        fmt_change_digital = is_digital_input(sd)
                           ? irq_reg_0x6b & info->fmt_change_digital_mask
                           : 0;

        if (fmt_change || fmt_change_digital) {
                v4l2_dbg(1, debug, sd,
                        "%s: fmt_change = 0x%x, fmt_change_digital = 0x%x\n",
                        __func__, fmt_change, fmt_change_digital);

                v4l2_subdev_notify_event(sd, &adv76xx_ev_fmt);

                if (handled)
                        *handled = true;
        }
        /* HDMI/DVI mode */
        if (irq_reg_0x6b & 0x01) {
                v4l2_dbg(1, debug, sd, "%s: irq %s mode\n", __func__,
                        (io_read(sd, 0x6a) & 0x01) ? "HDMI" : "DVI");
                set_rgb_quantization_range(sd);
                if (handled)
                        *handled = true;
        }

        /* tx 5v detect */
        tx_5v = io_read(sd, 0x70) & info->cable_det_mask;
        if (tx_5v) {
                v4l2_dbg(1, debug, sd, "%s: tx_5v: 0x%x\n", __func__, tx_5v);
                io_write(sd, 0x71, tx_5v);
                adv76xx_s_detect_tx_5v_ctrl(sd);
                if (handled)
                        *handled = true;
        }
        return 0;
}

static int adv76xx_get_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid)
{
        struct adv76xx_state *state = to_state(sd);
        u8 *data = NULL;

        memset(edid->reserved, 0, sizeof(edid->reserved));

        switch (edid->pad) {
        case ADV76XX_PAD_HDMI_PORT_A:
        case ADV7604_PAD_HDMI_PORT_B:
        case ADV7604_PAD_HDMI_PORT_C:
        case ADV7604_PAD_HDMI_PORT_D:
                if (state->edid.present & (1 << edid->pad))
                        data = state->edid.edid;
                break;
        default:
                return -EINVAL;
        }

        if (edid->start_block == 0 && edid->blocks == 0) {
                edid->blocks = data ? state->edid.blocks : 0;
                return 0;
        }

        if (data == NULL)
                return -ENODATA;

        if (edid->start_block >= state->edid.blocks)
                return -EINVAL;

        if (edid->start_block + edid->blocks > state->edid.blocks)
                edid->blocks = state->edid.blocks - edid->start_block;

        memcpy(edid->edid, data + edid->start_block * 128, edid->blocks * 128);

        return 0;
}

static int get_edid_spa_location(const u8 *edid)
{
        u8 d;

        if ((edid[0x7e] != 1) ||
            (edid[0x80] != 0x02) ||
            (edid[0x81] != 0x03)) {
                return -1;
        }

        /* search Vendor Specific Data Block (tag 3) */
        d = edid[0x82] & 0x7f;
        if (d > 4) {
                int i = 0x84;
                int end = 0x80 + d;

                do {
                        u8 tag = edid[i] >> 5;
                        u8 len = edid[i] & 0x1f;

                        if ((tag == 3) && (len >= 5))
                                return i + 4;
                        i += len + 1;
                } while (i < end);
        }
        return -1;
}

static int adv76xx_set_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid)
{
        struct adv76xx_state *state = to_state(sd);
        const struct adv76xx_chip_info *info = state->info;
        int spa_loc;
        int err;
        int i;

        memset(edid->reserved, 0, sizeof(edid->reserved));

        if (edid->pad > ADV7604_PAD_HDMI_PORT_D)
                return -EINVAL;
        if (edid->start_block != 0)
                return -EINVAL;
        if (edid->blocks == 0) {
                /* Disable hotplug and I2C access to EDID RAM from DDC port */
                state->edid.present &= ~(1 << edid->pad);
                adv76xx_set_hpd(state, state->edid.present);
                rep_write_clr_set(sd, info->edid_enable_reg, 0x0f, state->edid.present);

                /* Fall back to a 16:9 aspect ratio */
                state->aspect_ratio.numerator = 16;
                state->aspect_ratio.denominator = 9;

                if (!state->edid.present)
                        state->edid.blocks = 0;

                v4l2_dbg(2, debug, sd, "%s: clear EDID pad %d, edid.present = 0x%x\n",
                                __func__, edid->pad, state->edid.present);
                return 0;
        }
        if (edid->blocks > 2) {
                edid->blocks = 2;
                return -E2BIG;
        }

        v4l2_dbg(2, debug, sd, "%s: write EDID pad %d, edid.present = 0x%x\n",
                        __func__, edid->pad, state->edid.present);

        /* Disable hotplug and I2C access to EDID RAM from DDC port */
        cancel_delayed_work_sync(&state->delayed_work_enable_hotplug);
        adv76xx_set_hpd(state, 0);
        rep_write_clr_set(sd, info->edid_enable_reg, 0x0f, 0x00);

        spa_loc = get_edid_spa_location(edid->edid);
        if (spa_loc < 0)
                spa_loc = 0xc0; /* Default value [REF_02, p. 116] */

        switch (edid->pad) {
        case ADV76XX_PAD_HDMI_PORT_A:
                state->spa_port_a[0] = edid->edid[spa_loc];
                state->spa_port_a[1] = edid->edid[spa_loc + 1];
                break;
        case ADV7604_PAD_HDMI_PORT_B:
                rep_write(sd, 0x70, edid->edid[spa_loc]);
                rep_write(sd, 0x71, edid->edid[spa_loc + 1]);
                break;
        case ADV7604_PAD_HDMI_PORT_C:
                rep_write(sd, 0x72, edid->edid[spa_loc]);
                rep_write(sd, 0x73, edid->edid[spa_loc + 1]);
                break;
        case ADV7604_PAD_HDMI_PORT_D:
                rep_write(sd, 0x74, edid->edid[spa_loc]);
                rep_write(sd, 0x75, edid->edid[spa_loc + 1]);
                break;
        default:
                return -EINVAL;
        }

        if (info->type == ADV7604) {
                rep_write(sd, 0x76, spa_loc & 0xff);
                rep_write_clr_set(sd, 0x77, 0x40, (spa_loc & 0x100) >> 2);
        } else {
                /* FIXME: Where is the SPA location LSB register ? */
                rep_write_clr_set(sd, 0x71, 0x01, (spa_loc & 0x100) >> 8);
        }

        edid->edid[spa_loc] = state->spa_port_a[0];
        edid->edid[spa_loc + 1] = state->spa_port_a[1];

        memcpy(state->edid.edid, edid->edid, 128 * edid->blocks);
        state->edid.blocks = edid->blocks;
        state->aspect_ratio = v4l2_calc_aspect_ratio(edid->edid[0x15],
                        edid->edid[0x16]);
        state->edid.present |= 1 << edid->pad;

        err = edid_write_block(sd, 128 * edid->blocks, state->edid.edid);
        if (err < 0) {
                v4l2_err(sd, "error %d writing edid pad %d\n", err, edid->pad);
                return err;
        }

        /* adv76xx calculates the checksums and enables I2C access to internal
           EDID RAM from DDC port. */
        rep_write_clr_set(sd, info->edid_enable_reg, 0x0f, state->edid.present);

        for (i = 0; i < 1000; i++) {
                if (rep_read(sd, info->edid_status_reg) & state->edid.present)
                        break;
                mdelay(1);
        }
        if (i == 1000) {
                v4l2_err(sd, "error enabling edid (0x%x)\n", state->edid.present);
                return -EIO;
        }

        /* enable hotplug after 100 ms */
        queue_delayed_work(state->work_queues,
                        &state->delayed_work_enable_hotplug, HZ / 10);
        return 0;
}

/*********** avi info frame CEA-861-E **************/

static const struct adv76xx_cfg_read_infoframe adv76xx_cri[] = {
        { "AVI", 0x01, 0xe0, 0x00 },
        { "Audio", 0x02, 0xe3, 0x1c },
        { "SDP", 0x04, 0xe6, 0x2a },
        { "Vendor", 0x10, 0xec, 0x54 }
};

static int adv76xx_read_infoframe(struct v4l2_subdev *sd, int index,
                                  union hdmi_infoframe *frame)
{
        uint8_t buffer[32];
        u8 len;
        int i;

        if (!(io_read(sd, 0x60) & adv76xx_cri[index].present_mask)) {
                v4l2_info(sd, "%s infoframe not received\n",
                          adv76xx_cri[index].desc);
                return -ENOENT;
        }

        for (i = 0; i < 3; i++)
                buffer[i] = infoframe_read(sd,
                                           adv76xx_cri[index].head_addr + i);

        len = buffer[2] + 1;

        if (len + 3 > sizeof(buffer)) {
                v4l2_err(sd, "%s: invalid %s infoframe length %d\n", __func__,
                         adv76xx_cri[index].desc, len);
                return -ENOENT;
        }

        for (i = 0; i < len; i++)
                buffer[i + 3] = infoframe_read(sd,
                                       adv76xx_cri[index].payload_addr + i);

        if (hdmi_infoframe_unpack(frame, buffer) < 0) {
                v4l2_err(sd, "%s: unpack of %s infoframe failed\n", __func__,
                         adv76xx_cri[index].desc);
                return -ENOENT;
        }
        return 0;
}

static void adv76xx_log_infoframes(struct v4l2_subdev *sd)
{
        int i;

        if (!is_hdmi(sd)) {
                v4l2_info(sd, "receive DVI-D signal, no infoframes\n");
                return;
        }

        for (i = 0; i < ARRAY_SIZE(adv76xx_cri); i++) {
                union hdmi_infoframe frame;
                struct i2c_client *client = v4l2_get_subdevdata(sd);

                if (adv76xx_read_infoframe(sd, i, &frame))
                        return;
                hdmi_infoframe_log(KERN_INFO, &client->dev, &frame);
        }
}

static int adv76xx_log_status(struct v4l2_subdev *sd)
{
        struct adv76xx_state *state = to_state(sd);
        const struct adv76xx_chip_info *info = state->info;
        struct v4l2_dv_timings timings;
        struct stdi_readback stdi;
        u8 reg_io_0x02 = io_read(sd, 0x02);
        u8 edid_enabled;
        u8 cable_det;

        static const char * const csc_coeff_sel_rb[16] = {
                "bypassed", "YPbPr601 -> RGB", "reserved", "YPbPr709 -> RGB",
                "reserved", "RGB -> YPbPr601", "reserved", "RGB -> YPbPr709",
                "reserved", "YPbPr709 -> YPbPr601", "YPbPr601 -> YPbPr709",
                "reserved", "reserved", "reserved", "reserved", "manual"
        };
        static const char * const input_color_space_txt[16] = {
                "RGB limited range (16-235)", "RGB full range (0-255)",
                "YCbCr Bt.601 (16-235)", "YCbCr Bt.709 (16-235)",
                "xvYCC Bt.601", "xvYCC Bt.709",
                "YCbCr Bt.601 (0-255)", "YCbCr Bt.709 (0-255)",
                "invalid", "invalid", "invalid", "invalid", "invalid",
                "invalid", "invalid", "automatic"
        };
        static const char * const hdmi_color_space_txt[16] = {
                "RGB limited range (16-235)", "RGB full range (0-255)",
                "YCbCr Bt.601 (16-235)", "YCbCr Bt.709 (16-235)",
                "xvYCC Bt.601", "xvYCC Bt.709",
                "YCbCr Bt.601 (0-255)", "YCbCr Bt.709 (0-255)",
                "sYCC", "Adobe YCC 601", "AdobeRGB", "invalid", "invalid",
                "invalid", "invalid", "invalid"
        };
        static const char * const rgb_quantization_range_txt[] = {
                "Automatic",
                "RGB limited range (16-235)",
                "RGB full range (0-255)",
        };
        static const char * const deep_color_mode_txt[4] = {
                "8-bits per channel",
                "10-bits per channel",
                "12-bits per channel",
                "16-bits per channel (not supported)"
        };

        v4l2_info(sd, "-----Chip status-----\n");
        v4l2_info(sd, "Chip power: %s\n", no_power(sd) ? "off" : "on");
        edid_enabled = rep_read(sd, info->edid_status_reg);
        v4l2_info(sd, "EDID enabled port A: %s, B: %s, C: %s, D: %s\n",
                        ((edid_enabled & 0x01) ? "Yes" : "No"),
                        ((edid_enabled & 0x02) ? "Yes" : "No"),
                        ((edid_enabled & 0x04) ? "Yes" : "No"),
                        ((edid_enabled & 0x08) ? "Yes" : "No"));
        v4l2_info(sd, "CEC: %s\n", !!(cec_read(sd, 0x2a) & 0x01) ?
                        "enabled" : "disabled");

        v4l2_info(sd, "-----Signal status-----\n");
        cable_det = info->read_cable_det(sd);
        v4l2_info(sd, "Cable detected (+5V power) port A: %s, B: %s, C: %s, D: %s\n",
                        ((cable_det & 0x01) ? "Yes" : "No"),
                        ((cable_det & 0x02) ? "Yes" : "No"),
                        ((cable_det & 0x04) ? "Yes" : "No"),
                        ((cable_det & 0x08) ? "Yes" : "No"));
        v4l2_info(sd, "TMDS signal detected: %s\n",
                        no_signal_tmds(sd) ? "false" : "true");
        v4l2_info(sd, "TMDS signal locked: %s\n",
                        no_lock_tmds(sd) ? "false" : "true");
        v4l2_info(sd, "SSPD locked: %s\n", no_lock_sspd(sd) ? "false" : "true");
        v4l2_info(sd, "STDI locked: %s\n", no_lock_stdi(sd) ? "false" : "true");
        v4l2_info(sd, "CP locked: %s\n", no_lock_cp(sd) ? "false" : "true");
        v4l2_info(sd, "CP free run: %s\n",
                        (in_free_run(sd)) ? "on" : "off");
        v4l2_info(sd, "Prim-mode = 0x%x, video std = 0x%x, v_freq = 0x%x\n",
                        io_read(sd, 0x01) & 0x0f, io_read(sd, 0x00) & 0x3f,
                        (io_read(sd, 0x01) & 0x70) >> 4);

        v4l2_info(sd, "-----Video Timings-----\n");
        if (read_stdi(sd, &stdi))
                v4l2_info(sd, "STDI: not locked\n");
        else
                v4l2_info(sd, "STDI: lcf (frame height - 1) = %d, bl = %d, lcvs (vsync) = %d, %s, %chsync, %cvsync\n",
                                stdi.lcf, stdi.bl, stdi.lcvs,
                                stdi.interlaced ? "interlaced" : "progressive",
                                stdi.hs_pol, stdi.vs_pol);
        if (adv76xx_query_dv_timings(sd, &timings))
                v4l2_info(sd, "No video detected\n");
        else
                v4l2_print_dv_timings(sd->name, "Detected format: ",
                                      &timings, true);
        v4l2_print_dv_timings(sd->name, "Configured format: ",
                              &state->timings, true);

        if (no_signal(sd))
                return 0;

        v4l2_info(sd, "-----Color space-----\n");
        v4l2_info(sd, "RGB quantization range ctrl: %s\n",
                        rgb_quantization_range_txt[state->rgb_quantization_range]);
        v4l2_info(sd, "Input color space: %s\n",
                        input_color_space_txt[reg_io_0x02 >> 4]);
        v4l2_info(sd, "Output color space: %s %s, saturator %s, alt-gamma %s\n",
                        (reg_io_0x02 & 0x02) ? "RGB" : "YCbCr",
                        (reg_io_0x02 & 0x04) ? "(16-235)" : "(0-255)",
                        (((reg_io_0x02 >> 2) & 0x01) ^ (reg_io_0x02 & 0x01)) ?
                                "enabled" : "disabled",
                        (reg_io_0x02 & 0x08) ? "enabled" : "disabled");
        v4l2_info(sd, "Color space conversion: %s\n",
                        csc_coeff_sel_rb[cp_read(sd, info->cp_csc) >> 4]);

        if (!is_digital_input(sd))
                return 0;

        v4l2_info(sd, "-----%s status-----\n", is_hdmi(sd) ? "HDMI" : "DVI-D");
        v4l2_info(sd, "Digital video port selected: %c\n",
                        (hdmi_read(sd, 0x00) & 0x03) + 'A');
        v4l2_info(sd, "HDCP encrypted content: %s\n",
                        (hdmi_read(sd, 0x05) & 0x40) ? "true" : "false");
        v4l2_info(sd, "HDCP keys read: %s%s\n",
                        (hdmi_read(sd, 0x04) & 0x20) ? "yes" : "no",
                        (hdmi_read(sd, 0x04) & 0x10) ? "ERROR" : "");
        if (is_hdmi(sd)) {
                bool audio_pll_locked = hdmi_read(sd, 0x04) & 0x01;
                bool audio_sample_packet_detect = hdmi_read(sd, 0x18) & 0x01;
                bool audio_mute = io_read(sd, 0x65) & 0x40;

                v4l2_info(sd, "Audio: pll %s, samples %s, %s\n",
                                audio_pll_locked ? "locked" : "not locked",
                                audio_sample_packet_detect ? "detected" : "not detected",
                                audio_mute ? "muted" : "enabled");
                if (audio_pll_locked && audio_sample_packet_detect) {
                        v4l2_info(sd, "Audio format: %s\n",
                                        (hdmi_read(sd, 0x07) & 0x20) ? "multi-channel" : "stereo");
                }
                v4l2_info(sd, "Audio CTS: %u\n", (hdmi_read(sd, 0x5b) << 12) +
                                (hdmi_read(sd, 0x5c) << 8) +
                                (hdmi_read(sd, 0x5d) & 0xf0));
                v4l2_info(sd, "Audio N: %u\n", ((hdmi_read(sd, 0x5d) & 0x0f) << 16) +
                                (hdmi_read(sd, 0x5e) << 8) +
                                hdmi_read(sd, 0x5f));
                v4l2_info(sd, "AV Mute: %s\n", (hdmi_read(sd, 0x04) & 0x40) ? "on" : "off");

                v4l2_info(sd, "Deep color mode: %s\n", deep_color_mode_txt[(hdmi_read(sd, 0x0b) & 0x60) >> 5]);
                v4l2_info(sd, "HDMI colorspace: %s\n", hdmi_color_space_txt[hdmi_read(sd, 0x53) & 0xf]);

                adv76xx_log_infoframes(sd);
        }

        return 0;
}

static int adv76xx_subscribe_event(struct v4l2_subdev *sd,
                                   struct v4l2_fh *fh,
                                   struct v4l2_event_subscription *sub)
{
        switch (sub->type) {
        case V4L2_EVENT_SOURCE_CHANGE:
                return v4l2_src_change_event_subdev_subscribe(sd, fh, sub);
        case V4L2_EVENT_CTRL:
                return v4l2_ctrl_subdev_subscribe_event(sd, fh, sub);
        default:
                return -EINVAL;
        }
}

/* ----------------------------------------------------------------------- */

static const struct v4l2_ctrl_ops adv76xx_ctrl_ops = {
        .s_ctrl = adv76xx_s_ctrl,
};

static const struct v4l2_subdev_core_ops adv76xx_core_ops = {
        .log_status = adv76xx_log_status,
        .interrupt_service_routine = adv76xx_isr,
        .subscribe_event = adv76xx_subscribe_event,
        .unsubscribe_event = v4l2_event_subdev_unsubscribe,
#ifdef CONFIG_VIDEO_ADV_DEBUG
        .g_register = adv76xx_g_register,
        .s_register = adv76xx_s_register,
#endif
};

static const struct v4l2_subdev_video_ops adv76xx_video_ops = {
        .s_routing = adv76xx_s_routing,
        .g_input_status = adv76xx_g_input_status,
        .s_dv_timings = adv76xx_s_dv_timings,
        .g_dv_timings = adv76xx_g_dv_timings,
        .query_dv_timings = adv76xx_query_dv_timings,
};

static const struct v4l2_subdev_pad_ops adv76xx_pad_ops = {
        .enum_mbus_code = adv76xx_enum_mbus_code,
        .get_fmt = adv76xx_get_format,
        .set_fmt = adv76xx_set_format,
        .get_edid = adv76xx_get_edid,
        .set_edid = adv76xx_set_edid,
        .dv_timings_cap = adv76xx_dv_timings_cap,
        .enum_dv_timings = adv76xx_enum_dv_timings,
};

static const struct v4l2_subdev_ops adv76xx_ops = {
        .core = &adv76xx_core_ops,
        .video = &adv76xx_video_ops,
        .pad = &adv76xx_pad_ops,
};

/* -------------------------- custom ctrls ---------------------------------- */

static const struct v4l2_ctrl_config adv7604_ctrl_analog_sampling_phase = {
        .ops = &adv76xx_ctrl_ops,
        .id = V4L2_CID_ADV_RX_ANALOG_SAMPLING_PHASE,
        .name = "Analog Sampling Phase",
        .type = V4L2_CTRL_TYPE_INTEGER,
        .min = 0,
        .max = 0x1f,
        .step = 1,
        .def = 0,
};

static const struct v4l2_ctrl_config adv76xx_ctrl_free_run_color_manual = {
        .ops = &adv76xx_ctrl_ops,
        .id = V4L2_CID_ADV_RX_FREE_RUN_COLOR_MANUAL,
        .name = "Free Running Color, Manual",
        .type = V4L2_CTRL_TYPE_BOOLEAN,
        .min = false,
        .max = true,
        .step = 1,
        .def = false,
};

static const struct v4l2_ctrl_config adv76xx_ctrl_free_run_color = {
        .ops = &adv76xx_ctrl_ops,
        .id = V4L2_CID_ADV_RX_FREE_RUN_COLOR,
        .name = "Free Running Color",
        .type = V4L2_CTRL_TYPE_INTEGER,
        .min = 0x0,
        .max = 0xffffff,
        .step = 0x1,
        .def = 0x0,
};

/* ----------------------------------------------------------------------- */

static int adv76xx_core_init(struct v4l2_subdev *sd)
{
        struct adv76xx_state *state = to_state(sd);
        const struct adv76xx_chip_info *info = state->info;
        struct adv76xx_platform_data *pdata = &state->pdata;

        hdmi_write(sd, 0x48,
                (pdata->disable_pwrdnb ? 0x80 : 0) |
                (pdata->disable_cable_det_rst ? 0x40 : 0));

        disable_input(sd);

        if (pdata->default_input >= 0 &&
            pdata->default_input < state->source_pad) {
                state->selected_input = pdata->default_input;
                select_input(sd);
                enable_input(sd);
        }

        /* power */
        io_write(sd, 0x0c, 0x42);   /* Power up part and power down VDP */
        io_write(sd, 0x0b, 0x44);   /* Power down ESDP block */
        cp_write(sd, 0xcf, 0x01);   /* Power down macrovision */

        /* video format */
        io_write_clr_set(sd, 0x02, 0x0f,
                        pdata->alt_gamma << 3 |
                        pdata->op_656_range << 2 |
                        pdata->alt_data_sat << 0);
        io_write_clr_set(sd, 0x05, 0x0e, pdata->blank_data << 3 |
                        pdata->insert_av_codes << 2 |
                        pdata->replicate_av_codes << 1);
        adv76xx_setup_format(state);

        cp_write(sd, 0x69, 0x30);   /* Enable CP CSC */

        /* VS, HS polarities */
        io_write(sd, 0x06, 0xa0 | pdata->inv_vs_pol << 2 |
                 pdata->inv_hs_pol << 1 | pdata->inv_llc_pol);

        /* Adjust drive strength */
        io_write(sd, 0x14, 0x40 | pdata->dr_str_data << 4 |
                                pdata->dr_str_clk << 2 |
                                pdata->dr_str_sync);

        cp_write(sd, 0xba, (pdata->hdmi_free_run_mode << 1) | 0x01); /* HDMI free run */
        cp_write(sd, 0xf3, 0xdc); /* Low threshold to enter/exit free run mode */
        cp_write(sd, 0xf9, 0x23); /*  STDI ch. 1 - LCVS change threshold -
                                      ADI recommended setting [REF_01, c. 2.3.3] */
        cp_write(sd, 0x45, 0x23); /*  STDI ch. 2 - LCVS change threshold -
                                      ADI recommended setting [REF_01, c. 2.3.3] */
        cp_write(sd, 0xc9, 0x2d); /* use prim_mode and vid_std as free run resolution
                                     for digital formats */

        /* HDMI audio */
        hdmi_write_clr_set(sd, 0x15, 0x03, 0x03); /* Mute on FIFO over-/underflow [REF_01, c. 1.2.18] */
        hdmi_write_clr_set(sd, 0x1a, 0x0e, 0x08); /* Wait 1 s before unmute */
        hdmi_write_clr_set(sd, 0x68, 0x06, 0x06); /* FIFO reset on over-/underflow [REF_01, c. 1.2.19] */

        /* TODO from platform data */
        afe_write(sd, 0xb5, 0x01);  /* Setting MCLK to 256Fs */

        if (adv76xx_has_afe(state)) {
                afe_write(sd, 0x02, pdata->ain_sel); /* Select analog input muxing mode */
                io_write_clr_set(sd, 0x30, 1 << 4, pdata->output_bus_lsb_to_msb << 4);
        }

        /* interrupts */
        io_write(sd, 0x40, 0xc0 | pdata->int1_config); /* Configure INT1 */
        io_write(sd, 0x46, 0x98); /* Enable SSPD, STDI and CP unlocked interrupts */
        io_write(sd, 0x6e, info->fmt_change_digital_mask); /* Enable V_LOCKED and DE_REGEN_LCK interrupts */
        io_write(sd, 0x73, info->cable_det_mask); /* Enable cable detection (+5v) interrupts */
        info->setup_irqs(sd);

        return v4l2_ctrl_handler_setup(sd->ctrl_handler);
}

static void adv7604_setup_irqs(struct v4l2_subdev *sd)
{
        io_write(sd, 0x41, 0xd7); /* STDI irq for any change, disable INT2 */
}

static void adv7611_setup_irqs(struct v4l2_subdev *sd)
{
        io_write(sd, 0x41, 0xd0); /* STDI irq for any change, disable INT2 */
}

static void adv7612_setup_irqs(struct v4l2_subdev *sd)
{
        io_write(sd, 0x41, 0xd0); /* disable INT2 */
}

static void adv76xx_unregister_clients(struct adv76xx_state *state)
{
        unsigned int i;

        for (i = 1; i < ARRAY_SIZE(state->i2c_clients); ++i) {
                if (state->i2c_clients[i])
                        i2c_unregister_device(state->i2c_clients[i]);
        }
}

static struct i2c_client *adv76xx_dummy_client(struct v4l2_subdev *sd,
                                                        u8 addr, u8 io_reg)
{
        struct i2c_client *client = v4l2_get_subdevdata(sd);

        if (addr)
                io_write(sd, io_reg, addr << 1);
        return i2c_new_dummy(client->adapter, io_read(sd, io_reg) >> 1);
}

static const struct adv76xx_reg_seq adv7604_recommended_settings_afe[] = {
        /* reset ADI recommended settings for HDMI: */
        /* "ADV7604 Register Settings Recommendations (rev. 2.5, June 2010)" p. 4. */
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x0d), 0x04 }, /* HDMI filter optimization */
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x0d), 0x04 }, /* HDMI filter optimization */
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x3d), 0x00 }, /* DDC bus active pull-up control */
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x3e), 0x74 }, /* TMDS PLL optimization */
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x4e), 0x3b }, /* TMDS PLL optimization */
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x57), 0x74 }, /* TMDS PLL optimization */
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x58), 0x63 }, /* TMDS PLL optimization */
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x8d), 0x18 }, /* equaliser */
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x8e), 0x34 }, /* equaliser */
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x93), 0x88 }, /* equaliser */
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x94), 0x2e }, /* equaliser */
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x96), 0x00 }, /* enable automatic EQ changing */

        /* set ADI recommended settings for digitizer */
        /* "ADV7604 Register Settings Recommendations (rev. 2.5, June 2010)" p. 17. */
        { ADV76XX_REG(ADV76XX_PAGE_AFE, 0x12), 0x7b }, /* ADC noise shaping filter controls */
        { ADV76XX_REG(ADV76XX_PAGE_AFE, 0x0c), 0x1f }, /* CP core gain controls */
        { ADV76XX_REG(ADV76XX_PAGE_CP, 0x3e), 0x04 }, /* CP core pre-gain control */
        { ADV76XX_REG(ADV76XX_PAGE_CP, 0xc3), 0x39 }, /* CP coast control. Graphics mode */
        { ADV76XX_REG(ADV76XX_PAGE_CP, 0x40), 0x5c }, /* CP core pre-gain control. Graphics mode */

        { ADV76XX_REG_SEQ_TERM, 0 },
};

static const struct adv76xx_reg_seq adv7604_recommended_settings_hdmi[] = {
        /* set ADI recommended settings for HDMI: */
        /* "ADV7604 Register Settings Recommendations (rev. 2.5, June 2010)" p. 4. */
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x0d), 0x84 }, /* HDMI filter optimization */
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x3d), 0x10 }, /* DDC bus active pull-up control */
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x3e), 0x39 }, /* TMDS PLL optimization */
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x4e), 0x3b }, /* TMDS PLL optimization */
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x57), 0xb6 }, /* TMDS PLL optimization */
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x58), 0x03 }, /* TMDS PLL optimization */
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x8d), 0x18 }, /* equaliser */
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x8e), 0x34 }, /* equaliser */
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x93), 0x8b }, /* equaliser */
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x94), 0x2d }, /* equaliser */
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x96), 0x01 }, /* enable automatic EQ changing */

        /* reset ADI recommended settings for digitizer */
        /* "ADV7604 Register Settings Recommendations (rev. 2.5, June 2010)" p. 17. */
        { ADV76XX_REG(ADV76XX_PAGE_AFE, 0x12), 0xfb }, /* ADC noise shaping filter controls */
        { ADV76XX_REG(ADV76XX_PAGE_AFE, 0x0c), 0x0d }, /* CP core gain controls */

        { ADV76XX_REG_SEQ_TERM, 0 },
};

static const struct adv76xx_reg_seq adv7611_recommended_settings_hdmi[] = {
        /* ADV7611 Register Settings Recommendations Rev 1.5, May 2014 */
        { ADV76XX_REG(ADV76XX_PAGE_CP, 0x6c), 0x00 },
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x9b), 0x03 },
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x6f), 0x08 },
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x85), 0x1f },
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x87), 0x70 },
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x57), 0xda },
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x58), 0x01 },
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x03), 0x98 },
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x4c), 0x44 },
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x8d), 0x04 },
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x8e), 0x1e },

        { ADV76XX_REG_SEQ_TERM, 0 },
};

static const struct adv76xx_reg_seq adv7612_recommended_settings_hdmi[] = {
        { ADV76XX_REG(ADV76XX_PAGE_CP, 0x6c), 0x00 },
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x9b), 0x03 },
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x6f), 0x08 },
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x85), 0x1f },
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x87), 0x70 },
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x57), 0xda },
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x58), 0x01 },
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x03), 0x98 },
        { ADV76XX_REG(ADV76XX_PAGE_HDMI, 0x4c), 0x44 },
        { ADV76XX_REG_SEQ_TERM, 0 },
};

static const struct adv76xx_chip_info adv76xx_chip_info[] = {
        [ADV7604] = {
                .type = ADV7604,
                .has_afe = true,
                .max_port = ADV7604_PAD_VGA_COMP,
                .num_dv_ports = 4,
                .edid_enable_reg = 0x77,
                .edid_status_reg = 0x7d,
                .lcf_reg = 0xb3,
                .tdms_lock_mask = 0xe0,
                .cable_det_mask = 0x1e,
                .fmt_change_digital_mask = 0xc1,
                .cp_csc = 0xfc,
                .formats = adv7604_formats,
                .nformats = ARRAY_SIZE(adv7604_formats),
                .set_termination = adv7604_set_termination,
                .setup_irqs = adv7604_setup_irqs,
                .read_hdmi_pixelclock = adv7604_read_hdmi_pixelclock,
                .read_cable_det = adv7604_read_cable_det,
                .recommended_settings = {
                    [0] = adv7604_recommended_settings_afe,
                    [1] = adv7604_recommended_settings_hdmi,
                },
                .num_recommended_settings = {
                    [0] = ARRAY_SIZE(adv7604_recommended_settings_afe),
                    [1] = ARRAY_SIZE(adv7604_recommended_settings_hdmi),
                },
                .page_mask = BIT(ADV76XX_PAGE_IO) | BIT(ADV7604_PAGE_AVLINK) |
                        BIT(ADV76XX_PAGE_CEC) | BIT(ADV76XX_PAGE_INFOFRAME) |
                        BIT(ADV7604_PAGE_ESDP) | BIT(ADV7604_PAGE_DPP) |
                        BIT(ADV76XX_PAGE_AFE) | BIT(ADV76XX_PAGE_REP) |
                        BIT(ADV76XX_PAGE_EDID) | BIT(ADV76XX_PAGE_HDMI) |
                        BIT(ADV76XX_PAGE_TEST) | BIT(ADV76XX_PAGE_CP) |
                        BIT(ADV7604_PAGE_VDP),
                .linewidth_mask = 0xfff,
                .field0_height_mask = 0xfff,
                .field1_height_mask = 0xfff,
                .hfrontporch_mask = 0x3ff,
                .hsync_mask = 0x3ff,
                .hbackporch_mask = 0x3ff,
                .field0_vfrontporch_mask = 0x1fff,
                .field0_vsync_mask = 0x1fff,
                .field0_vbackporch_mask = 0x1fff,
                .field1_vfrontporch_mask = 0x1fff,
                .field1_vsync_mask = 0x1fff,
                .field1_vbackporch_mask = 0x1fff,
        },
        [ADV7611] = {
                .type = ADV7611,
                .has_afe = false,
                .max_port = ADV76XX_PAD_HDMI_PORT_A,
                .num_dv_ports = 1,
                .edid_enable_reg = 0x74,
                .edid_status_reg = 0x76,
                .lcf_reg = 0xa3,
                .tdms_lock_mask = 0x43,
                .cable_det_mask = 0x01,
                .fmt_change_digital_mask = 0x03,
                .cp_csc = 0xf4,
                .formats = adv7611_formats,
                .nformats = ARRAY_SIZE(adv7611_formats),
                .set_termination = adv7611_set_termination,
                .setup_irqs = adv7611_setup_irqs,
                .read_hdmi_pixelclock = adv7611_read_hdmi_pixelclock,
                .read_cable_det = adv7611_read_cable_det,
                .recommended_settings = {
                    [1] = adv7611_recommended_settings_hdmi,
                },
                .num_recommended_settings = {
                    [1] = ARRAY_SIZE(adv7611_recommended_settings_hdmi),
                },
                .page_mask = BIT(ADV76XX_PAGE_IO) | BIT(ADV76XX_PAGE_CEC) |
                        BIT(ADV76XX_PAGE_INFOFRAME) | BIT(ADV76XX_PAGE_AFE) |
                        BIT(ADV76XX_PAGE_REP) |  BIT(ADV76XX_PAGE_EDID) |
                        BIT(ADV76XX_PAGE_HDMI) | BIT(ADV76XX_PAGE_CP),
                .linewidth_mask = 0x1fff,
                .field0_height_mask = 0x1fff,
                .field1_height_mask = 0x1fff,
                .hfrontporch_mask = 0x1fff,
                .hsync_mask = 0x1fff,
                .hbackporch_mask = 0x1fff,
                .field0_vfrontporch_mask = 0x3fff,
                .field0_vsync_mask = 0x3fff,
                .field0_vbackporch_mask = 0x3fff,
                .field1_vfrontporch_mask = 0x3fff,
                .field1_vsync_mask = 0x3fff,
                .field1_vbackporch_mask = 0x3fff,
        },
        [ADV7612] = {
                .type = ADV7612,
                .has_afe = false,
                .max_port = ADV76XX_PAD_HDMI_PORT_A,    /* B not supported */
                .num_dv_ports = 1,                      /* normally 2 */
                .edid_enable_reg = 0x74,
                .edid_status_reg = 0x76,
                .lcf_reg = 0xa3,
                .tdms_lock_mask = 0x43,
                .cable_det_mask = 0x01,
                .fmt_change_digital_mask = 0x03,
                .cp_csc = 0xf4,
                .formats = adv7612_formats,
                .nformats = ARRAY_SIZE(adv7612_formats),
                .set_termination = adv7611_set_termination,
                .setup_irqs = adv7612_setup_irqs,
                .read_hdmi_pixelclock = adv7611_read_hdmi_pixelclock,
                .read_cable_det = adv7612_read_cable_det,
                .recommended_settings = {
                    [1] = adv7612_recommended_settings_hdmi,
                },
                .num_recommended_settings = {
                    [1] = ARRAY_SIZE(adv7612_recommended_settings_hdmi),
                },
                .page_mask = BIT(ADV76XX_PAGE_IO) | BIT(ADV76XX_PAGE_CEC) |
                        BIT(ADV76XX_PAGE_INFOFRAME) | BIT(ADV76XX_PAGE_AFE) |
                        BIT(ADV76XX_PAGE_REP) |  BIT(ADV76XX_PAGE_EDID) |
                        BIT(ADV76XX_PAGE_HDMI) | BIT(ADV76XX_PAGE_CP),
                .linewidth_mask = 0x1fff,
                .field0_height_mask = 0x1fff,
                .field1_height_mask = 0x1fff,
                .hfrontporch_mask = 0x1fff,
                .hsync_mask = 0x1fff,
                .hbackporch_mask = 0x1fff,
                .field0_vfrontporch_mask = 0x3fff,
                .field0_vsync_mask = 0x3fff,
                .field0_vbackporch_mask = 0x3fff,
                .field1_vfrontporch_mask = 0x3fff,
                .field1_vsync_mask = 0x3fff,
                .field1_vbackporch_mask = 0x3fff,
        },
};

static const struct i2c_device_id adv76xx_i2c_id[] = {
        { "adv7604", (kernel_ulong_t)&adv76xx_chip_info[ADV7604] },
        { "adv7611", (kernel_ulong_t)&adv76xx_chip_info[ADV7611] },
        { "adv7612", (kernel_ulong_t)&adv76xx_chip_info[ADV7612] },
        { }
};
MODULE_DEVICE_TABLE(i2c, adv76xx_i2c_id);

static const struct of_device_id adv76xx_of_id[] __maybe_unused = {
        { .compatible = "adi,adv7611", .data = &adv76xx_chip_info[ADV7611] },
        { .compatible = "adi,adv7612", .data = &adv76xx_chip_info[ADV7612] },
        { }
};
MODULE_DEVICE_TABLE(of, adv76xx_of_id);

static int adv76xx_parse_dt(struct adv76xx_state *state)
{
        struct v4l2_of_endpoint bus_cfg;
        struct device_node *endpoint;
        struct device_node *np;
        unsigned int flags;
        u32 v;

        np = state->i2c_clients[ADV76XX_PAGE_IO]->dev.of_node;

        /* Parse the endpoint. */
        endpoint = of_graph_get_next_endpoint(np, NULL);
        if (!endpoint)
                return -EINVAL;

        v4l2_of_parse_endpoint(endpoint, &bus_cfg);

        if (!of_property_read_u32(endpoint, "default-input", &v))
                state->pdata.default_input = v;
        else
                state->pdata.default_input = -1;

        of_node_put(endpoint);

        flags = bus_cfg.bus.parallel.flags;

        if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
                state->pdata.inv_hs_pol = 1;

        if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
                state->pdata.inv_vs_pol = 1;

        if (flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
                state->pdata.inv_llc_pol = 1;

        if (bus_cfg.bus_type == V4L2_MBUS_BT656) {
                state->pdata.insert_av_codes = 1;
                state->pdata.op_656_range = 1;
        }

        /* Disable the interrupt for now as no DT-based board uses it. */
        state->pdata.int1_config = ADV76XX_INT1_CONFIG_DISABLED;

        /* Use the default I2C addresses. */
        state->pdata.i2c_addresses[ADV7604_PAGE_AVLINK] = 0x42;
        state->pdata.i2c_addresses[ADV76XX_PAGE_CEC] = 0x40;
        state->pdata.i2c_addresses[ADV76XX_PAGE_INFOFRAME] = 0x3e;
        state->pdata.i2c_addresses[ADV7604_PAGE_ESDP] = 0x38;
        state->pdata.i2c_addresses[ADV7604_PAGE_DPP] = 0x3c;
        state->pdata.i2c_addresses[ADV76XX_PAGE_AFE] = 0x26;
        state->pdata.i2c_addresses[ADV76XX_PAGE_REP] = 0x32;
        state->pdata.i2c_addresses[ADV76XX_PAGE_EDID] = 0x36;
        state->pdata.i2c_addresses[ADV76XX_PAGE_HDMI] = 0x34;
        state->pdata.i2c_addresses[ADV76XX_PAGE_TEST] = 0x30;
        state->pdata.i2c_addresses[ADV76XX_PAGE_CP] = 0x22;
        state->pdata.i2c_addresses[ADV7604_PAGE_VDP] = 0x24;

        /* Hardcode the remaining platform data fields. */
        state->pdata.disable_pwrdnb = 0;
        state->pdata.disable_cable_det_rst = 0;
        state->pdata.blank_data = 1;
        state->pdata.alt_data_sat = 1;
        state->pdata.op_format_mode_sel = ADV7604_OP_FORMAT_MODE0;
        state->pdata.bus_order = ADV7604_BUS_ORDER_RGB;

        return 0;
}

static const struct regmap_config adv76xx_regmap_cnf[] = {
        {
                .name                   = "io",
                .reg_bits               = 8,
                .val_bits               = 8,

                .max_register           = 0xff,
                .cache_type             = REGCACHE_NONE,
        },
        {
                .name                   = "avlink",
                .reg_bits               = 8,
                .val_bits               = 8,

                .max_register           = 0xff,
                .cache_type             = REGCACHE_NONE,
        },
        {
                .name                   = "cec",
                .reg_bits               = 8,
                .val_bits               = 8,

                .max_register           = 0xff,
                .cache_type             = REGCACHE_NONE,
        },
        {
                .name                   = "infoframe",
                .reg_bits               = 8,
                .val_bits               = 8,

                .max_register           = 0xff,
                .cache_type             = REGCACHE_NONE,
        },
        {
                .name                   = "esdp",
                .reg_bits               = 8,
                .val_bits               = 8,

                .max_register           = 0xff,
                .cache_type             = REGCACHE_NONE,
        },
        {
                .name                   = "epp",
                .reg_bits               = 8,
                .val_bits               = 8,

                .max_register           = 0xff,
                .cache_type             = REGCACHE_NONE,
        },
        {
                .name                   = "afe",
                .reg_bits               = 8,
                .val_bits               = 8,

                .max_register           = 0xff,
                .cache_type             = REGCACHE_NONE,
        },
        {
                .name                   = "rep",
                .reg_bits               = 8,
                .val_bits               = 8,

                .max_register           = 0xff,
                .cache_type             = REGCACHE_NONE,
        },
        {
                .name                   = "edid",
                .reg_bits               = 8,
                .val_bits               = 8,

                .max_register           = 0xff,
                .cache_type             = REGCACHE_NONE,
        },

        {
                .name                   = "hdmi",
                .reg_bits               = 8,
                .val_bits               = 8,

                .max_register           = 0xff,
                .cache_type             = REGCACHE_NONE,
        },
        {
                .name                   = "test",
                .reg_bits               = 8,
                .val_bits               = 8,

                .max_register           = 0xff,
                .cache_type             = REGCACHE_NONE,
        },
        {
                .name                   = "cp",
                .reg_bits               = 8,
                .val_bits               = 8,

                .max_register           = 0xff,
                .cache_type             = REGCACHE_NONE,
        },
        {
                .name                   = "vdp",
                .reg_bits               = 8,
                .val_bits               = 8,

                .max_register           = 0xff,
                .cache_type             = REGCACHE_NONE,
        },
};

static int configure_regmap(struct adv76xx_state *state, int region)
{
        int err;

        if (!state->i2c_clients[region])
                return -ENODEV;

        state->regmap[region] =
                devm_regmap_init_i2c(state->i2c_clients[region],
                                     &adv76xx_regmap_cnf[region]);

        if (IS_ERR(state->regmap[region])) {
                err = PTR_ERR(state->regmap[region]);
                v4l_err(state->i2c_clients[region],
                        "Error initializing regmap %d with error %d\n",
                        region, err);
                return -EINVAL;
        }

        return 0;
}

static int configure_regmaps(struct adv76xx_state *state)
{
        int i, err;

        for (i = ADV7604_PAGE_AVLINK ; i < ADV76XX_PAGE_MAX; i++) {
                err = configure_regmap(state, i);
                if (err && (err != -ENODEV))