// SPDX-License-Identifier: GPL-2.0-only
/*
 *  cobalt driver initialization and card probing
 *
 *  Derived from cx18-driver.c
 *
 *  Copyright 2012-2015 Cisco Systems, Inc. and/or its affiliates.
 *  All rights reserved.
 */

#include <linux/bitfield.h>
#include <linux/delay.h>
#include <media/i2c/adv7604.h>
#include <media/i2c/adv7842.h>
#include <media/i2c/adv7511.h>
#include <media/v4l2-event.h>
#include <media/v4l2-ctrls.h>

#include "cobalt-driver.h"
#include "cobalt-irq.h"
#include "cobalt-i2c.h"
#include "cobalt-v4l2.h"
#include "cobalt-flash.h"
#include "cobalt-alsa.h"
#include "cobalt-omnitek.h"

/* add your revision and whatnot here */
static const struct pci_device_id cobalt_pci_tbl[] = {
        {PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_COBALT,
         PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
        {0,}
};

MODULE_DEVICE_TABLE(pci, cobalt_pci_tbl);

static atomic_t cobalt_instance = ATOMIC_INIT(0);

int cobalt_debug;
module_param_named(debug, cobalt_debug, int, 0644);
MODULE_PARM_DESC(debug, "Debug level. Default: 0\n");

int cobalt_ignore_err;
module_param_named(ignore_err, cobalt_ignore_err, int, 0644);
MODULE_PARM_DESC(ignore_err,
        "If set then ignore missing i2c adapters/receivers. Default: 0\n");

MODULE_AUTHOR("Hans Verkuil <hverkuil@kernel.org> & Morten Hestnes");
MODULE_DESCRIPTION("cobalt driver");
MODULE_LICENSE("GPL");

static u8 edid[256] = {
        0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00,
        0x50, 0x21, 0x32, 0x27, 0x00, 0x00, 0x00, 0x00,
        0x22, 0x1a, 0x01, 0x03, 0x80, 0x30, 0x1b, 0x78,
        0x0f, 0xee, 0x91, 0xa3, 0x54, 0x4c, 0x99, 0x26,
        0x0f, 0x50, 0x54, 0x2f, 0xcf, 0x00, 0x31, 0x59,
        0x45, 0x59, 0x61, 0x59, 0x81, 0x99, 0x01, 0x01,
        0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x3a,
        0x80, 0x18, 0x71, 0x38, 0x2d, 0x40, 0x58, 0x2c,
        0x45, 0x00, 0xe0, 0x0e, 0x11, 0x00, 0x00, 0x1e,
        0x00, 0x00, 0x00, 0xfd, 0x00, 0x18, 0x55, 0x18,
        0x5e, 0x11, 0x00, 0x0a, 0x20, 0x20, 0x20, 0x20,
        0x20, 0x20, 0x00, 0x00, 0x00, 0xfc, 0x00, 0x63,
        0x6f, 0x62, 0x61, 0x6c, 0x74, 0x0a, 0x20, 0x20,
        0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0x10,
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x9d,

        0x02, 0x03, 0x1f, 0xf1, 0x4a, 0x10, 0x1f, 0x04,
        0x13, 0x22, 0x21, 0x20, 0x02, 0x11, 0x01, 0x23,
        0x09, 0x07, 0x07, 0x68, 0x03, 0x0c, 0x00, 0x10,
        0x00, 0x00, 0x22, 0x0f, 0xe2, 0x00, 0xca, 0x00,
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46,
};

static void cobalt_set_interrupt(struct cobalt *cobalt, bool enable)
{
        if (enable) {
                unsigned irqs = COBALT_SYSSTAT_VI0_INT1_MSK |
                                COBALT_SYSSTAT_VI1_INT1_MSK |
                                COBALT_SYSSTAT_VI2_INT1_MSK |
                                COBALT_SYSSTAT_VI3_INT1_MSK |
                                COBALT_SYSSTAT_VI0_INT2_MSK |
                                COBALT_SYSSTAT_VI1_INT2_MSK |
                                COBALT_SYSSTAT_VI2_INT2_MSK |
                                COBALT_SYSSTAT_VI3_INT2_MSK |
                                COBALT_SYSSTAT_VI0_LOST_DATA_MSK |
                                COBALT_SYSSTAT_VI1_LOST_DATA_MSK |
                                COBALT_SYSSTAT_VI2_LOST_DATA_MSK |
                                COBALT_SYSSTAT_VI3_LOST_DATA_MSK |
                                COBALT_SYSSTAT_AUD_IN_LOST_DATA_MSK;

                if (cobalt->have_hsma_rx)
                        irqs |= COBALT_SYSSTAT_VIHSMA_INT1_MSK |
                                COBALT_SYSSTAT_VIHSMA_INT2_MSK |
                                COBALT_SYSSTAT_VIHSMA_LOST_DATA_MSK;

                if (cobalt->have_hsma_tx)
                        irqs |= COBALT_SYSSTAT_VOHSMA_INT1_MSK |
                                COBALT_SYSSTAT_VOHSMA_LOST_DATA_MSK |
                                COBALT_SYSSTAT_AUD_OUT_LOST_DATA_MSK;
                /* Clear any existing interrupts */
                cobalt_write_bar1(cobalt, COBALT_SYS_STAT_EDGE, 0xffffffff);
                /* PIO Core interrupt mask register.
                   Enable ADV7604 INT1 interrupts */
                cobalt_write_bar1(cobalt, COBALT_SYS_STAT_MASK, irqs);
        } else {
                /* Disable all ADV7604 interrupts */
                cobalt_write_bar1(cobalt, COBALT_SYS_STAT_MASK, 0);
        }
}

static unsigned cobalt_get_sd_nr(struct v4l2_subdev *sd)
{
        struct cobalt *cobalt = to_cobalt(sd->v4l2_dev);
        unsigned i;

        for (i = 0; i < COBALT_NUM_NODES; i++)
                if (sd == cobalt->streams[i].sd)
                        return i;
        cobalt_err("Invalid adv7604 subdev pointer!\n");
        return 0;
}

static void cobalt_notify(struct v4l2_subdev *sd,
                          unsigned int notification, void *arg)
{
        struct cobalt *cobalt = to_cobalt(sd->v4l2_dev);
        unsigned sd_nr = cobalt_get_sd_nr(sd);
        struct cobalt_stream *s = &cobalt->streams[sd_nr];
        bool hotplug = arg ? *((int *)arg) : false;

        if (s->is_output)
                return;

        switch (notification) {
        case ADV76XX_HOTPLUG:
                cobalt_s_bit_sysctrl(cobalt,
                        COBALT_SYS_CTRL_HPD_TO_CONNECTOR_BIT(sd_nr), hotplug);
                cobalt_dbg(1, "Set hotplug for adv %d to %d\n", sd_nr, hotplug);
                break;
        case V4L2_DEVICE_NOTIFY_EVENT:
                cobalt_dbg(1, "Format changed for adv %d\n", sd_nr);
                v4l2_event_queue(&s->vdev, arg);
                break;
        default:
                break;
        }
}

static int get_payload_size(u16 code)
{
        switch (code) {
        case 0: return 128;
        case 1: return 256;
        case 2: return 512;
        case 3: return 1024;
        case 4: return 2048;
        case 5: return 4096;
        default: return 0;
        }
        return 0;
}

static const char *get_link_speed(u16 stat)
{
        switch (stat & PCI_EXP_LNKSTA_CLS) {
        case 1: return "2.5 Gbit/s";
        case 2: return "5 Gbit/s";
        case 3: return "10 Gbit/s";
        }
        return "Unknown speed";
}

void cobalt_pcie_status_show(struct cobalt *cobalt)
{
        struct pci_dev *pci_dev = cobalt->pci_dev;
        struct pci_dev *pci_bus_dev = cobalt->pci_dev->bus->self;
        u32 capa;
        u16 stat, ctrl;

        if (!pci_is_pcie(pci_dev) || !pci_is_pcie(pci_bus_dev))
                return;

        /* Device */
        pcie_capability_read_dword(pci_dev, PCI_EXP_DEVCAP, &capa);
        pcie_capability_read_word(pci_dev, PCI_EXP_DEVCTL, &ctrl);
        pcie_capability_read_word(pci_dev, PCI_EXP_DEVSTA, &stat);
        cobalt_info("PCIe device capability 0x%08x: Max payload %d\n",
                    capa, get_payload_size(capa & PCI_EXP_DEVCAP_PAYLOAD));
        cobalt_info("PCIe device control 0x%04x: Max payload %d. Max read request %d\n",
                    ctrl,
                    get_payload_size((ctrl & PCI_EXP_DEVCTL_PAYLOAD) >> 5),
                    get_payload_size((ctrl & PCI_EXP_DEVCTL_READRQ) >> 12));
        cobalt_info("PCIe device status 0x%04x\n", stat);

        /* Link */
        pcie_capability_read_dword(pci_dev, PCI_EXP_LNKCAP, &capa);
        pcie_capability_read_word(pci_dev, PCI_EXP_LNKCTL, &ctrl);
        pcie_capability_read_word(pci_dev, PCI_EXP_LNKSTA, &stat);
        cobalt_info("PCIe link capability 0x%08x: %s per lane and %u lanes\n",
                        capa, get_link_speed(capa),
                        FIELD_GET(PCI_EXP_LNKCAP_MLW, capa));
        cobalt_info("PCIe link control 0x%04x\n", ctrl);
        cobalt_info("PCIe link status 0x%04x: %s per lane and %u lanes\n",
                    stat, get_link_speed(stat),
                    FIELD_GET(PCI_EXP_LNKSTA_NLW, stat));

        /* Bus */
        pcie_capability_read_dword(pci_bus_dev, PCI_EXP_LNKCAP, &capa);
        cobalt_info("PCIe bus link capability 0x%08x: %s per lane and %u lanes\n",
                        capa, get_link_speed(capa),
                        FIELD_GET(PCI_EXP_LNKCAP_MLW, capa));

        /* Slot */
        pcie_capability_read_dword(pci_dev, PCI_EXP_SLTCAP, &capa);
        pcie_capability_read_word(pci_dev, PCI_EXP_SLTCTL, &ctrl);
        pcie_capability_read_word(pci_dev, PCI_EXP_SLTSTA, &stat);
        cobalt_info("PCIe slot capability 0x%08x\n", capa);
        cobalt_info("PCIe slot control 0x%04x\n", ctrl);
        cobalt_info("PCIe slot status 0x%04x\n", stat);
}

static unsigned pcie_link_get_lanes(struct cobalt *cobalt)
{
        struct pci_dev *pci_dev = cobalt->pci_dev;
        u16 link;

        if (!pci_is_pcie(pci_dev))
                return 0;
        pcie_capability_read_word(pci_dev, PCI_EXP_LNKSTA, &link);
        return FIELD_GET(PCI_EXP_LNKSTA_NLW, link);
}

static unsigned pcie_bus_link_get_lanes(struct cobalt *cobalt)
{
        struct pci_dev *pci_dev = cobalt->pci_dev->bus->self;
        u32 link;

        if (!pci_is_pcie(pci_dev))
                return 0;
        pcie_capability_read_dword(pci_dev, PCI_EXP_LNKCAP, &link);
        return FIELD_GET(PCI_EXP_LNKCAP_MLW, link);
}

static void msi_config_show(struct cobalt *cobalt, struct pci_dev *pci_dev)
{
        u16 ctrl, data;
        u32 adrs_l, adrs_h;

        pci_read_config_word(pci_dev, 0x52, &ctrl);
        cobalt_info("MSI %s\n", ctrl & 1 ? "enable" : "disable");
        cobalt_info("MSI multiple message: Capable %u. Enable %u\n",
                    (1 << ((ctrl >> 1) & 7)), (1 << ((ctrl >> 4) & 7)));
        if (ctrl & 0x80)
                cobalt_info("MSI: 64-bit address capable\n");
        pci_read_config_dword(pci_dev, 0x54, &adrs_l);
        pci_read_config_dword(pci_dev, 0x58, &adrs_h);
        pci_read_config_word(pci_dev, 0x5c, &data);
        if (ctrl & 0x80)
                cobalt_info("MSI: Address 0x%08x%08x. Data 0x%04x\n",
                                adrs_h, adrs_l, data);
        else
                cobalt_info("MSI: Address 0x%08x. Data 0x%04x\n",
                                adrs_l, data);
}

static void cobalt_pci_iounmap(struct cobalt *cobalt, struct pci_dev *pci_dev)
{
        if (cobalt->bar0) {
                pci_iounmap(pci_dev, cobalt->bar0);
                cobalt->bar0 = NULL;
        }
        if (cobalt->bar1) {
                pci_iounmap(pci_dev, cobalt->bar1);
                cobalt->bar1 = NULL;
        }
}

static void cobalt_free_msi(struct cobalt *cobalt, struct pci_dev *pci_dev)
{
        free_irq(pci_dev->irq, (void *)cobalt);
        pci_free_irq_vectors(pci_dev);
}

static int cobalt_setup_pci(struct cobalt *cobalt, struct pci_dev *pci_dev,
                            const struct pci_device_id *pci_id)
{
        u32 ctrl;
        int ret;

        cobalt_dbg(1, "enabling pci device\n");

        ret = pci_enable_device(pci_dev);
        if (ret) {
                cobalt_err("can't enable device\n");
                return ret;
        }
        pci_set_master(pci_dev);
        pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &cobalt->card_rev);
        pci_read_config_word(pci_dev, PCI_DEVICE_ID, &cobalt->device_id);

        switch (cobalt->device_id) {
        case PCI_DEVICE_ID_COBALT:
                cobalt_info("PCI Express interface from Omnitek\n");
                break;
        default:
                cobalt_info("PCI Express interface provider is unknown!\n");
                break;
        }

        if (pcie_link_get_lanes(cobalt) != 8) {
                cobalt_warn("PCI Express link width is %d lanes.\n",
                                pcie_link_get_lanes(cobalt));
                if (pcie_bus_link_get_lanes(cobalt) < 8)
                        cobalt_warn("The current slot only supports %d lanes, for best performance 8 are needed\n",
                                        pcie_bus_link_get_lanes(cobalt));
                if (pcie_link_get_lanes(cobalt) != pcie_bus_link_get_lanes(cobalt)) {
                        cobalt_err("The card is most likely not seated correctly in the PCIe slot\n");
                        ret = -EIO;
                        goto err_disable;
                }
        }

        if (dma_set_mask(&pci_dev->dev, DMA_BIT_MASK(64))) {
                ret = dma_set_mask(&pci_dev->dev, DMA_BIT_MASK(32));
                if (ret) {
                        cobalt_err("no suitable DMA available\n");
                        goto err_disable;
                }
        }

        ret = pci_request_regions(pci_dev, "cobalt");
        if (ret) {
                cobalt_err("error requesting regions\n");
                goto err_disable;
        }

        cobalt_pcie_status_show(cobalt);

        cobalt->bar0 = pci_iomap(pci_dev, 0, 0);
        cobalt->bar1 = pci_iomap(pci_dev, 1, 0);
        if (cobalt->bar1 == NULL) {
                cobalt->bar1 = pci_iomap(pci_dev, 2, 0);
                cobalt_info("64-bit BAR\n");
        }
        if (!cobalt->bar0 || !cobalt->bar1) {
                ret = -EIO;
                goto err_release;
        }

        /* Reset the video inputs before enabling any interrupts */
        ctrl = cobalt_read_bar1(cobalt, COBALT_SYS_CTRL_BASE);
        cobalt_write_bar1(cobalt, COBALT_SYS_CTRL_BASE, ctrl & ~0xf00);

        /* Disable interrupts to prevent any spurious interrupts
           from being generated. */
        cobalt_set_interrupt(cobalt, false);

        if (pci_alloc_irq_vectors(pci_dev, 1, 1, PCI_IRQ_MSI) < 1) {
                cobalt_err("Could not enable MSI\n");
                ret = -EIO;
                goto err_release;
        }
        msi_config_show(cobalt, pci_dev);

        /* Register IRQ */
        if (request_irq(pci_dev->irq, cobalt_irq_handler, IRQF_SHARED,
                        cobalt->v4l2_dev.name, (void *)cobalt)) {
                cobalt_err("Failed to register irq %d\n", pci_dev->irq);
                ret = -EIO;
                goto err_msi;
        }

        omni_sg_dma_init(cobalt);
        return 0;

err_msi:
        pci_disable_msi(pci_dev);

err_release:
        cobalt_pci_iounmap(cobalt, pci_dev);
        pci_release_regions(pci_dev);

err_disable:
        pci_disable_device(cobalt->pci_dev);
        return ret;
}

static int cobalt_hdl_info_get(struct cobalt *cobalt)
{
        int i;

        for (i = 0; i < COBALT_HDL_INFO_SIZE; i++)
                cobalt->hdl_info[i] =
                        ioread8(cobalt->bar1 + COBALT_HDL_INFO_BASE + i);
        cobalt->hdl_info[COBALT_HDL_INFO_SIZE - 1] = '\0';
        if (strstr(cobalt->hdl_info, COBALT_HDL_SEARCH_STR))
                return 0;

        return 1;
}

static void cobalt_stream_struct_init(struct cobalt *cobalt)
{
        int i;

        for (i = 0; i < COBALT_NUM_STREAMS; i++) {
                struct cobalt_stream *s = &cobalt->streams[i];

                s->cobalt = cobalt;
                s->flags = 0;
                s->is_audio = false;
                s->is_output = false;
                s->is_dummy = true;

                /* The Memory DMA channels will always get a lower channel
                 * number than the FIFO DMA. Video input should map to the
                 * stream 0-3. The other can use stream struct from 4 and
                 * higher */
                if (i <= COBALT_HSMA_IN_NODE) {
                        s->dma_channel = i + cobalt->first_fifo_channel;
                        s->video_channel = i;
                        s->dma_fifo_mask =
                                COBALT_SYSSTAT_VI0_LOST_DATA_MSK << (4 * i);
                        s->adv_irq_mask =
                                COBALT_SYSSTAT_VI0_INT1_MSK << (4 * i);
                } else if (i >= COBALT_AUDIO_IN_STREAM &&
                           i <= COBALT_AUDIO_IN_STREAM + 4) {
                        unsigned idx = i - COBALT_AUDIO_IN_STREAM;

                        s->dma_channel = 6 + idx;
                        s->is_audio = true;
                        s->video_channel = idx;
                        s->dma_fifo_mask = COBALT_SYSSTAT_AUD_IN_LOST_DATA_MSK;
                } else if (i == COBALT_HSMA_OUT_NODE) {
                        s->dma_channel = 11;
                        s->is_output = true;
                        s->video_channel = 5;
                        s->dma_fifo_mask = COBALT_SYSSTAT_VOHSMA_LOST_DATA_MSK;
                        s->adv_irq_mask = COBALT_SYSSTAT_VOHSMA_INT1_MSK;
                } else if (i == COBALT_AUDIO_OUT_STREAM) {
                        s->dma_channel = 12;
                        s->is_audio = true;
                        s->is_output = true;
                        s->video_channel = 5;
                        s->dma_fifo_mask = COBALT_SYSSTAT_AUD_OUT_LOST_DATA_MSK;
                } else {
                        /* FIXME: Memory DMA for debug purpose */
                        s->dma_channel = i - COBALT_NUM_NODES;
                }
                cobalt_info("stream #%d -> dma channel #%d <- video channel %d\n",
                            i, s->dma_channel, s->video_channel);
        }
}

static int cobalt_subdevs_init(struct cobalt *cobalt)
{
        static struct adv76xx_platform_data adv7604_pdata = {
                .disable_pwrdnb = 1,
                .ain_sel = ADV7604_AIN7_8_9_NC_SYNC_3_1,
                .bus_order = ADV7604_BUS_ORDER_BRG,
                .blank_data = 1,
                .op_format_mode_sel = ADV7604_OP_FORMAT_MODE0,
                .int1_config = ADV76XX_INT1_CONFIG_ACTIVE_HIGH,
                .dr_str_data = ADV76XX_DR_STR_HIGH,
                .dr_str_clk = ADV76XX_DR_STR_HIGH,
                .dr_str_sync = ADV76XX_DR_STR_HIGH,
                .hdmi_free_run_mode = 1,
                .inv_vs_pol = 1,
                .inv_hs_pol = 1,
        };
        static struct i2c_board_info adv7604_info = {
                .type = "adv7604",
                .addr = 0x20,
                .platform_data = &adv7604_pdata,
        };

        struct cobalt_stream *s = cobalt->streams;
        int i;

        for (i = 0; i < COBALT_NUM_INPUTS; i++) {
                struct v4l2_subdev_format sd_fmt = {
                        .pad = ADV7604_PAD_SOURCE,
                        .which = V4L2_SUBDEV_FORMAT_ACTIVE,
                        .format.code = MEDIA_BUS_FMT_YUYV8_1X16,
                };
                struct v4l2_subdev_edid cobalt_edid = {
                        .pad = ADV76XX_PAD_HDMI_PORT_A,
                        .start_block = 0,
                        .blocks = 2,
                        .edid = edid,
                };
                int err;

                s[i].pad_source = ADV7604_PAD_SOURCE;
                s[i].i2c_adap = &cobalt->i2c_adap[i];
                if (s[i].i2c_adap->dev.parent == NULL)
                        continue;
                cobalt_s_bit_sysctrl(cobalt,
                                COBALT_SYS_CTRL_NRESET_TO_HDMI_BIT(i), 1);
                s[i].sd = v4l2_i2c_new_subdev_board(&cobalt->v4l2_dev,
                        s[i].i2c_adap, &adv7604_info, NULL);
                if (!s[i].sd) {
                        if (cobalt_ignore_err)
                                continue;
                        return -ENODEV;
                }
                err = v4l2_subdev_call(s[i].sd, video, s_routing,
                                ADV76XX_PAD_HDMI_PORT_A, 0, 0);
                if (err)
                        return err;
                err = v4l2_subdev_call(s[i].sd, pad, set_edid,
                                &cobalt_edid);
                if (err)
                        return err;
                err = v4l2_subdev_call(s[i].sd, pad, set_fmt, NULL,
                                &sd_fmt);
                if (err)
                        return err;
                /* Reset channel video module */
                cobalt_s_bit_sysctrl(cobalt,
                                COBALT_SYS_CTRL_VIDEO_RX_RESETN_BIT(i), 0);
                mdelay(2);
                cobalt_s_bit_sysctrl(cobalt,
                                COBALT_SYS_CTRL_VIDEO_RX_RESETN_BIT(i), 1);
                mdelay(1);
                s[i].is_dummy = false;
                cobalt->streams[i + COBALT_AUDIO_IN_STREAM].is_dummy = false;
        }
        return 0;
}

static int cobalt_subdevs_hsma_init(struct cobalt *cobalt)
{
        static struct adv7842_platform_data adv7842_pdata = {
                .disable_pwrdnb = 1,
                .ain_sel = ADV7842_AIN1_2_3_NC_SYNC_1_2,
                .bus_order = ADV7842_BUS_ORDER_RBG,
                .op_format_mode_sel = ADV7842_OP_FORMAT_MODE0,
                .blank_data = 1,
                .dr_str_data = 3,
                .dr_str_clk = 3,
                .dr_str_sync = 3,
                .mode = ADV7842_MODE_HDMI,
                .hdmi_free_run_enable = 1,
                .vid_std_select = ADV7842_HDMI_COMP_VID_STD_HD_1250P,
                .i2c_sdp_io = 0x4a,
                .i2c_sdp = 0x48,
                .i2c_cp = 0x22,
                .i2c_vdp = 0x24,
                .i2c_afe = 0x26,
                .i2c_hdmi = 0x34,
                .i2c_repeater = 0x32,
                .i2c_edid = 0x36,
                .i2c_infoframe = 0x3e,
                .i2c_cec = 0x40,
                .i2c_avlink = 0x42,
        };
        static struct i2c_board_info adv7842_info = {
                .type = "adv7842",
                .addr = 0x20,
                .platform_data = &adv7842_pdata,
        };
        struct v4l2_subdev_format sd_fmt = {
                .pad = ADV7842_PAD_SOURCE,
                .which = V4L2_SUBDEV_FORMAT_ACTIVE,
                .format.code = MEDIA_BUS_FMT_YUYV8_1X16,
        };
        static struct adv7511_platform_data adv7511_pdata = {
                .i2c_edid = 0x7e >> 1,
                .i2c_cec = 0x7c >> 1,
                .i2c_pktmem = 0x70 >> 1,
                .cec_clk = 12000000,
        };
        static struct i2c_board_info adv7511_info = {
                .type = "adv7511-v4l2",
                .addr = 0x39, /* 0x39 or 0x3d */
                .platform_data = &adv7511_pdata,
        };
        struct v4l2_subdev_edid cobalt_edid = {
                .pad = ADV7842_EDID_PORT_A,
                .start_block = 0,
                .blocks = 2,
                .edid = edid,
        };
        struct cobalt_stream *s = &cobalt->streams[COBALT_HSMA_IN_NODE];

        s->i2c_adap = &cobalt->i2c_adap[COBALT_NUM_ADAPTERS - 1];
        if (s->i2c_adap->dev.parent == NULL)
                return 0;
        cobalt_s_bit_sysctrl(cobalt, COBALT_SYS_CTRL_NRESET_TO_HDMI_BIT(4), 1);

        s->sd = v4l2_i2c_new_subdev_board(&cobalt->v4l2_dev,
                        s->i2c_adap, &adv7842_info, NULL);
        if (s->sd) {
                int err = v4l2_subdev_call(s->sd, pad, set_edid, &cobalt_edid);

                if (err)
                        return err;
                err = v4l2_subdev_call(s->sd, pad, set_fmt, NULL,
                                &sd_fmt);
                if (err)
                        return err;
                cobalt->have_hsma_rx = true;
                s->pad_source = ADV7842_PAD_SOURCE;
                s->is_dummy = false;
                cobalt->streams[4 + COBALT_AUDIO_IN_STREAM].is_dummy = false;
                /* Reset channel video module */
                cobalt_s_bit_sysctrl(cobalt,
                                COBALT_SYS_CTRL_VIDEO_RX_RESETN_BIT(4), 0);
                mdelay(2);
                cobalt_s_bit_sysctrl(cobalt,
                                COBALT_SYS_CTRL_VIDEO_RX_RESETN_BIT(4), 1);
                mdelay(1);
                return err;
        }
        cobalt_s_bit_sysctrl(cobalt, COBALT_SYS_CTRL_NRESET_TO_HDMI_BIT(4), 0);
        cobalt_s_bit_sysctrl(cobalt, COBALT_SYS_CTRL_PWRDN0_TO_HSMA_TX_BIT, 0);
        s++;
        s->i2c_adap = &cobalt->i2c_adap[COBALT_NUM_ADAPTERS - 1];
        s->sd = v4l2_i2c_new_subdev_board(&cobalt->v4l2_dev,
                        s->i2c_adap, &adv7511_info, NULL);
        if (s->sd) {
                /* A transmitter is hooked up, so we can set this bit */
                cobalt_s_bit_sysctrl(cobalt,
                                COBALT_SYS_CTRL_HSMA_TX_ENABLE_BIT, 1);
                cobalt_s_bit_sysctrl(cobalt,
                                COBALT_SYS_CTRL_VIDEO_RX_RESETN_BIT(4), 0);
                cobalt_s_bit_sysctrl(cobalt,
                                COBALT_SYS_CTRL_VIDEO_TX_RESETN_BIT, 1);
                cobalt->have_hsma_tx = true;
                v4l2_subdev_call(s->sd, core, s_power, 1);
                v4l2_subdev_call(s->sd, video, s_stream, 1);
                v4l2_subdev_call(s->sd, audio, s_stream, 1);
                v4l2_ctrl_s_ctrl(v4l2_ctrl_find(s->sd->ctrl_handler,
                                 V4L2_CID_DV_TX_MODE), V4L2_DV_TX_MODE_HDMI);
                s->is_dummy = false;
                cobalt->streams[COBALT_AUDIO_OUT_STREAM].is_dummy = false;
                return 0;
        }
        return -ENODEV;
}

static int cobalt_probe(struct pci_dev *pci_dev,
                                  const struct pci_device_id *pci_id)
{
        struct cobalt *cobalt;
        int retval = 0;
        int i;

        /* FIXME - module parameter arrays constrain max instances */
        i = atomic_inc_return(&cobalt_instance) - 1;

        cobalt = kzalloc_obj(struct cobalt);
        if (cobalt == NULL)
                return -ENOMEM;
        cobalt->pci_dev = pci_dev;
        cobalt->instance = i;
        mutex_init(&cobalt->pci_lock);

        retval = v4l2_device_register(&pci_dev->dev, &cobalt->v4l2_dev);
        if (retval) {
                pr_err("cobalt: v4l2_device_register of card %d failed\n",
                                cobalt->instance);
                kfree(cobalt);
                return retval;
        }
        snprintf(cobalt->v4l2_dev.name, sizeof(cobalt->v4l2_dev.name),
                 "cobalt-%d", cobalt->instance);
        cobalt->v4l2_dev.notify = cobalt_notify;
        cobalt_info("Initializing card %d\n", cobalt->instance);

        cobalt->irq_work_queues =
                create_singlethread_workqueue(cobalt->v4l2_dev.name);
        if (cobalt->irq_work_queues == NULL) {
                cobalt_err("Could not create workqueue\n");
                retval = -ENOMEM;
                goto err;
        }

        INIT_WORK(&cobalt->irq_work_queue, cobalt_irq_work_handler);

        /* PCI Device Setup */
        retval = cobalt_setup_pci(cobalt, pci_dev, pci_id);
        if (retval != 0)
                goto err_wq;

        /* Show HDL version info */
        if (cobalt_hdl_info_get(cobalt))
                cobalt_info("Not able to read the HDL info\n");
        else
                cobalt_info("%s", cobalt->hdl_info);

        retval = cobalt_i2c_init(cobalt);
        if (retval)
                goto err_pci;

        cobalt_stream_struct_init(cobalt);

        retval = cobalt_subdevs_init(cobalt);
        if (retval)
                goto err_i2c;

        if (!(cobalt_read_bar1(cobalt, COBALT_SYS_STAT_BASE) &
                        COBALT_SYSSTAT_HSMA_PRSNTN_MSK)) {
                retval = cobalt_subdevs_hsma_init(cobalt);
                if (retval)
                        goto err_i2c;
        }

        retval = cobalt_nodes_register(cobalt);
        if (retval) {
                cobalt_err("Error %d registering device nodes\n", retval);
                goto err_i2c;
        }
        cobalt_set_interrupt(cobalt, true);
        v4l2_device_call_all(&cobalt->v4l2_dev, 0, core,
                                        interrupt_service_routine, 0, NULL);

        cobalt_info("Initialized cobalt card\n");

        cobalt_flash_probe(cobalt);

        return 0;

err_i2c:
        cobalt_i2c_exit(cobalt);
        cobalt_s_bit_sysctrl(cobalt, COBALT_SYS_CTRL_HSMA_TX_ENABLE_BIT, 0);
err_pci:
        cobalt_free_msi(cobalt, pci_dev);
        cobalt_pci_iounmap(cobalt, pci_dev);
        pci_release_regions(cobalt->pci_dev);
        pci_disable_device(cobalt->pci_dev);
err_wq:
        destroy_workqueue(cobalt->irq_work_queues);
err:
        cobalt_err("error %d on initialization\n", retval);

        v4l2_device_unregister(&cobalt->v4l2_dev);
        kfree(cobalt);
        return retval;
}

static void cobalt_remove(struct pci_dev *pci_dev)
{
        struct v4l2_device *v4l2_dev = pci_get_drvdata(pci_dev);
        struct cobalt *cobalt = to_cobalt(v4l2_dev);
        int i;

        cobalt_flash_remove(cobalt);
        cobalt_set_interrupt(cobalt, false);
        flush_workqueue(cobalt->irq_work_queues);
        cobalt_nodes_unregister(cobalt);
        for (i = 0; i < COBALT_NUM_ADAPTERS; i++) {
                struct v4l2_subdev *sd = cobalt->streams[i].sd;
                struct i2c_client *client;

                if (sd == NULL)
                        continue;
                client = v4l2_get_subdevdata(sd);
                v4l2_device_unregister_subdev(sd);
                i2c_unregister_device(client);
        }
        cobalt_i2c_exit(cobalt);
        cobalt_free_msi(cobalt, pci_dev);
        cobalt_s_bit_sysctrl(cobalt, COBALT_SYS_CTRL_HSMA_TX_ENABLE_BIT, 0);
        cobalt_pci_iounmap(cobalt, pci_dev);
        pci_release_regions(cobalt->pci_dev);
        pci_disable_device(cobalt->pci_dev);
        destroy_workqueue(cobalt->irq_work_queues);

        cobalt_info("removed cobalt card\n");

        v4l2_device_unregister(v4l2_dev);
        kfree(cobalt);
}

/* define a pci_driver for card detection */
static struct pci_driver cobalt_pci_driver = {
        .name =     "cobalt",
        .id_table = cobalt_pci_tbl,
        .probe =    cobalt_probe,
        .remove =   cobalt_remove,
};

module_pci_driver(cobalt_pci_driver);