// SPDX-License-Identifier: GPL-2.0-or-later
/*
   cx231xx-core.c - driver for Conexant Cx23100/101/102
                                USB video capture devices

   Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
                                Based on em28xx driver

 */

#include "cx231xx.h"
#include <linux/init.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <media/v4l2-common.h>
#include <media/tuner.h>

#include "cx231xx-reg.h"

/* #define ENABLE_DEBUG_ISOC_FRAMES */

static unsigned int core_debug;
module_param(core_debug, int, 0644);
MODULE_PARM_DESC(core_debug, "enable debug messages [core]");

#define cx231xx_coredbg(fmt, arg...) do {\
        if (core_debug) \
                printk(KERN_INFO "%s %s :"fmt, \
                         dev->name, __func__ , ##arg); } while (0)

static unsigned int reg_debug;
module_param(reg_debug, int, 0644);
MODULE_PARM_DESC(reg_debug, "enable debug messages [URB reg]");

static int alt = CX231XX_PINOUT;
module_param(alt, int, 0644);
MODULE_PARM_DESC(alt, "alternate setting to use for video endpoint");

#define cx231xx_isocdbg(fmt, arg...) do {\
        if (core_debug) \
                printk(KERN_INFO "%s %s :"fmt, \
                         dev->name, __func__ , ##arg); } while (0)

/*****************************************************************
*             Device control list functions                                      *
******************************************************************/

LIST_HEAD(cx231xx_devlist);
static DEFINE_MUTEX(cx231xx_devlist_mutex);

/*
 * cx231xx_realease_resources()
 * unregisters the v4l2,i2c and usb devices
 * called when the device gets disconnected or at module unload
*/
void cx231xx_remove_from_devlist(struct cx231xx *dev)
{
        if (dev == NULL)
                return;
        if (dev->udev == NULL)
                return;

        if (atomic_read(&dev->devlist_count) > 0) {
                mutex_lock(&cx231xx_devlist_mutex);
                list_del(&dev->devlist);
                atomic_dec(&dev->devlist_count);
                mutex_unlock(&cx231xx_devlist_mutex);
        }
};

void cx231xx_add_into_devlist(struct cx231xx *dev)
{
        mutex_lock(&cx231xx_devlist_mutex);
        list_add_tail(&dev->devlist, &cx231xx_devlist);
        atomic_inc(&dev->devlist_count);
        mutex_unlock(&cx231xx_devlist_mutex);
};

static LIST_HEAD(cx231xx_extension_devlist);

int cx231xx_register_extension(struct cx231xx_ops *ops)
{
        struct cx231xx *dev = NULL;

        mutex_lock(&cx231xx_devlist_mutex);
        list_add_tail(&ops->next, &cx231xx_extension_devlist);
        list_for_each_entry(dev, &cx231xx_devlist, devlist) {
                ops->init(dev);
                dev_info(dev->dev, "%s initialized\n", ops->name);
        }
        mutex_unlock(&cx231xx_devlist_mutex);
        return 0;
}
EXPORT_SYMBOL(cx231xx_register_extension);

void cx231xx_unregister_extension(struct cx231xx_ops *ops)
{
        struct cx231xx *dev = NULL;

        mutex_lock(&cx231xx_devlist_mutex);
        list_for_each_entry(dev, &cx231xx_devlist, devlist) {
                ops->fini(dev);
                dev_info(dev->dev, "%s removed\n", ops->name);
        }

        list_del(&ops->next);
        mutex_unlock(&cx231xx_devlist_mutex);
}
EXPORT_SYMBOL(cx231xx_unregister_extension);

void cx231xx_init_extension(struct cx231xx *dev)
{
        struct cx231xx_ops *ops = NULL;

        mutex_lock(&cx231xx_devlist_mutex);
        list_for_each_entry(ops, &cx231xx_extension_devlist, next) {
                if (ops->init)
                        ops->init(dev);
        }
        mutex_unlock(&cx231xx_devlist_mutex);
}

void cx231xx_close_extension(struct cx231xx *dev)
{
        struct cx231xx_ops *ops = NULL;

        mutex_lock(&cx231xx_devlist_mutex);
        list_for_each_entry(ops, &cx231xx_extension_devlist, next) {
                if (ops->fini)
                        ops->fini(dev);
        }
        mutex_unlock(&cx231xx_devlist_mutex);
}

/****************************************************************
*               U S B related functions                         *
*****************************************************************/
int cx231xx_send_usb_command(struct cx231xx_i2c *i2c_bus,
                             struct cx231xx_i2c_xfer_data *req_data)
{
        int status = 0;
        struct cx231xx *dev = i2c_bus->dev;
        struct VENDOR_REQUEST_IN ven_req;

        u8 saddr_len = 0;
        u8 _i2c_period = 0;
        u8 _i2c_nostop = 0;
        u8 _i2c_reserve = 0;

        if (dev->state & DEV_DISCONNECTED)
                return -ENODEV;

        /* Get the I2C period, nostop and reserve parameters */
        _i2c_period = i2c_bus->i2c_period;
        _i2c_nostop = i2c_bus->i2c_nostop;
        _i2c_reserve = i2c_bus->i2c_reserve;

        saddr_len = req_data->saddr_len;

        /* Set wValue */
        ven_req.wValue = (req_data->dev_addr << 9 | _i2c_period << 4 |
                          saddr_len << 2 | _i2c_nostop << 1 | I2C_SYNC |
                          _i2c_reserve << 6);

        /* set channel number */
        if (req_data->direction & I2C_M_RD) {
                /* channel number, for read,spec required channel_num +4 */
                ven_req.bRequest = i2c_bus->nr + 4;
        } else
                ven_req.bRequest = i2c_bus->nr; /* channel number,  */

        /* set index value */
        switch (saddr_len) {
        case 0:
                ven_req.wIndex = 0;     /* need check */
                break;
        case 1:
                ven_req.wIndex = (req_data->saddr_dat & 0xff);
                break;
        case 2:
                ven_req.wIndex = req_data->saddr_dat;
                break;
        }

        /* set wLength value */
        ven_req.wLength = req_data->buf_size;

        /* set bData value */
        ven_req.bData = 0;

        /* set the direction */
        if (req_data->direction) {
                ven_req.direction = USB_DIR_IN;
                memset(req_data->p_buffer, 0x00, ven_req.wLength);
        } else
                ven_req.direction = USB_DIR_OUT;

        /* set the buffer for read / write */
        ven_req.pBuff = req_data->p_buffer;


        /* call common vendor command request */
        status = cx231xx_send_vendor_cmd(dev, &ven_req);
        if (status < 0 && !dev->i2c_scan_running) {
                dev_err(dev->dev, "%s: failed with status -%d\n",
                        __func__, status);
        }

        return status;
}
EXPORT_SYMBOL_GPL(cx231xx_send_usb_command);

/*
 * Sends/Receives URB control messages, assuring to use a kalloced buffer
 * for all operations (dev->urb_buf), to avoid using stacked buffers, as
 * they aren't safe for usage with USB, due to DMA restrictions.
 * Also implements the debug code for control URB's.
 */
static int __usb_control_msg(struct cx231xx *dev, unsigned int pipe,
        __u8 request, __u8 requesttype, __u16 value, __u16 index,
        void *data, __u16 size, int timeout)
{
        int rc, i;

        if (reg_debug) {
                printk(KERN_DEBUG "%s: (pipe 0x%08x): %s:  %02x %02x %02x %02x %02x %02x %02x %02x ",
                                dev->name,
                                pipe,
                                (requesttype & USB_DIR_IN) ? "IN" : "OUT",
                                requesttype,
                                request,
                                value & 0xff, value >> 8,
                                index & 0xff, index >> 8,
                                size & 0xff, size >> 8);
                if (!(requesttype & USB_DIR_IN)) {
                        printk(KERN_CONT ">>>");
                        for (i = 0; i < size; i++)
                                printk(KERN_CONT " %02x",
                                       ((unsigned char *)data)[i]);
                }
        }

        /* Do the real call to usb_control_msg */
        mutex_lock(&dev->ctrl_urb_lock);
        if (!(requesttype & USB_DIR_IN) && size)
                memcpy(dev->urb_buf, data, size);
        rc = usb_control_msg(dev->udev, pipe, request, requesttype, value,
                             index, dev->urb_buf, size, timeout);
        if ((requesttype & USB_DIR_IN) && size)
                memcpy(data, dev->urb_buf, size);
        mutex_unlock(&dev->ctrl_urb_lock);

        if (reg_debug) {
                if (unlikely(rc < 0)) {
                        printk(KERN_CONT "FAILED!\n");
                        return rc;
                }

                if ((requesttype & USB_DIR_IN)) {
                        printk(KERN_CONT "<<<");
                        for (i = 0; i < size; i++)
                                printk(KERN_CONT " %02x",
                                       ((unsigned char *)data)[i]);
                }
                printk(KERN_CONT "\n");
        }

        return rc;
}


/*
 * cx231xx_read_ctrl_reg()
 * reads data from the usb device specifying bRequest and wValue
 */
int cx231xx_read_ctrl_reg(struct cx231xx *dev, u8 req, u16 reg,
                          char *buf, int len)
{
        u8 val = 0;
        int ret;
        int pipe = usb_rcvctrlpipe(dev->udev, 0);

        if (dev->state & DEV_DISCONNECTED)
                return -ENODEV;

        if (len > URB_MAX_CTRL_SIZE)
                return -EINVAL;

        switch (len) {
        case 1:
                val = ENABLE_ONE_BYTE;
                break;
        case 2:
                val = ENABLE_TWE_BYTE;
                break;
        case 3:
                val = ENABLE_THREE_BYTE;
                break;
        case 4:
                val = ENABLE_FOUR_BYTE;
                break;
        default:
                val = 0xFF;     /* invalid option */
        }

        if (val == 0xFF)
                return -EINVAL;

        ret = __usb_control_msg(dev, pipe, req,
                              USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
                              val, reg, buf, len, HZ);
        return ret;
}

int cx231xx_send_vendor_cmd(struct cx231xx *dev,
                                struct VENDOR_REQUEST_IN *ven_req)
{
        int ret;
        int pipe = 0;
        int unsend_size = 0;
        u8 *pdata;

        if (dev->state & DEV_DISCONNECTED)
                return -ENODEV;

        if ((ven_req->wLength > URB_MAX_CTRL_SIZE))
                return -EINVAL;

        if (ven_req->direction)
                pipe = usb_rcvctrlpipe(dev->udev, 0);
        else
                pipe = usb_sndctrlpipe(dev->udev, 0);

        /*
         * If the cx23102 read more than 4 bytes with i2c bus,
         * need chop to 4 byte per request
         */
        if ((ven_req->wLength > 4) && ((ven_req->bRequest == 0x4) ||
                                        (ven_req->bRequest == 0x5) ||
                                        (ven_req->bRequest == 0x6) ||

                                        /* Internal Master 3 Bus can send
                                         * and receive only 4 bytes per time
                                         */
                                        (ven_req->bRequest == 0x2))) {
                unsend_size = 0;
                pdata = ven_req->pBuff;


                unsend_size = ven_req->wLength;

                /* the first package */
                ven_req->wValue = ven_req->wValue & 0xFFFB;
                ven_req->wValue = (ven_req->wValue & 0xFFBD) | 0x2;
                ret = __usb_control_msg(dev, pipe, ven_req->bRequest,
                        ven_req->direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
                        ven_req->wValue, ven_req->wIndex, pdata,
                        0x0004, HZ);
                unsend_size = unsend_size - 4;

                /* the middle package */
                ven_req->wValue = (ven_req->wValue & 0xFFBD) | 0x42;
                while (unsend_size - 4 > 0) {
                        pdata = pdata + 4;
                        ret = __usb_control_msg(dev, pipe,
                                ven_req->bRequest,
                                ven_req->direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
                                ven_req->wValue, ven_req->wIndex, pdata,
                                0x0004, HZ);
                        unsend_size = unsend_size - 4;
                }

                /* the last package */
                ven_req->wValue = (ven_req->wValue & 0xFFBD) | 0x40;
                pdata = pdata + 4;
                ret = __usb_control_msg(dev, pipe, ven_req->bRequest,
                        ven_req->direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
                        ven_req->wValue, ven_req->wIndex, pdata,
                        unsend_size, HZ);
        } else {
                ret = __usb_control_msg(dev, pipe, ven_req->bRequest,
                                ven_req->direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
                                ven_req->wValue, ven_req->wIndex,
                                ven_req->pBuff, ven_req->wLength, HZ);
        }

        return ret;
}

/*
 * cx231xx_write_ctrl_reg()
 * sends data to the usb device, specifying bRequest
 */
int cx231xx_write_ctrl_reg(struct cx231xx *dev, u8 req, u16 reg, char *buf,
                           int len)
{
        u8 val = 0;
        int ret;
        int pipe = usb_sndctrlpipe(dev->udev, 0);

        if (dev->state & DEV_DISCONNECTED)
                return -ENODEV;

        if ((len < 1) || (len > URB_MAX_CTRL_SIZE))
                return -EINVAL;

        switch (len) {
        case 1:
                val = ENABLE_ONE_BYTE;
                break;
        case 2:
                val = ENABLE_TWE_BYTE;
                break;
        case 3:
                val = ENABLE_THREE_BYTE;
                break;
        case 4:
                val = ENABLE_FOUR_BYTE;
                break;
        default:
                val = 0xFF;     /* invalid option */
        }

        if (val == 0xFF)
                return -EINVAL;

        if (reg_debug) {
                int byte;

                cx231xx_isocdbg("(pipe 0x%08x): OUT: %02x %02x %02x %02x %02x %02x %02x %02x >>>",
                        pipe,
                        USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
                        req, 0, val, reg & 0xff,
                        reg >> 8, len & 0xff, len >> 8);

                for (byte = 0; byte < len; byte++)
                        cx231xx_isocdbg(" %02x", (unsigned char)buf[byte]);
                cx231xx_isocdbg("\n");
        }

        ret = __usb_control_msg(dev, pipe, req,
                              USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
                              val, reg, buf, len, HZ);

        return ret;
}

/****************************************************************
*           USB Alternate Setting functions                     *
*****************************************************************/

int cx231xx_set_video_alternate(struct cx231xx *dev)
{
        int errCode, prev_alt = dev->video_mode.alt;
        unsigned int min_pkt_size = dev->width * 2 + 4;
        u32 usb_interface_index = 0;

        /* When image size is bigger than a certain value,
           the frame size should be increased, otherwise, only
           green screen will be received.
         */
        if (dev->width * 2 * dev->height > 720 * 240 * 2)
                min_pkt_size *= 2;

        if (dev->width > 360) {
                /* resolutions: 720,704,640 */
                dev->video_mode.alt = 3;
        } else if (dev->width > 180) {
                /* resolutions: 360,352,320,240 */
                dev->video_mode.alt = 2;
        } else if (dev->width > 0) {
                /* resolutions: 180,176,160,128,88 */
                dev->video_mode.alt = 1;
        } else {
                /* Change to alt0 BULK to release USB bandwidth */
                dev->video_mode.alt = 0;
        }

        if (dev->USE_ISO == 0)
                dev->video_mode.alt = 0;

        cx231xx_coredbg("dev->video_mode.alt= %d\n", dev->video_mode.alt);

        /* Get the correct video interface Index */
        usb_interface_index =
            dev->current_pcb_config.hs_config_info[0].interface_info.
            video_index + 1;

        if (dev->video_mode.alt != prev_alt) {
                cx231xx_coredbg("minimum isoc packet size: %u (alt=%d)\n",
                                min_pkt_size, dev->video_mode.alt);

                if (dev->video_mode.alt_max_pkt_size != NULL)
                        dev->video_mode.max_pkt_size =
                        dev->video_mode.alt_max_pkt_size[dev->video_mode.alt];
                cx231xx_coredbg("setting alternate %d with wMaxPacketSize=%u\n",
                                dev->video_mode.alt,
                                dev->video_mode.max_pkt_size);
                errCode =
                    usb_set_interface(dev->udev, usb_interface_index,
                                      dev->video_mode.alt);
                if (errCode < 0) {
                        dev_err(dev->dev,
                                "cannot change alt number to %d (error=%i)\n",
                                dev->video_mode.alt, errCode);
                        return errCode;
                }
        }
        return 0;
}

int cx231xx_set_alt_setting(struct cx231xx *dev, u8 index, u8 alt)
{
        int status = 0;
        u32 usb_interface_index = 0;
        u32 max_pkt_size = 0;

        switch (index) {
        case INDEX_TS1:
                usb_interface_index =
                    dev->current_pcb_config.hs_config_info[0].interface_info.
                    ts1_index + 1;
                dev->ts1_mode.alt = alt;
                if (dev->ts1_mode.alt_max_pkt_size != NULL)
                        max_pkt_size = dev->ts1_mode.max_pkt_size =
                            dev->ts1_mode.alt_max_pkt_size[dev->ts1_mode.alt];
                break;
        case INDEX_TS2:
                usb_interface_index =
                    dev->current_pcb_config.hs_config_info[0].interface_info.
                    ts2_index + 1;
                break;
        case INDEX_AUDIO:
                usb_interface_index =
                    dev->current_pcb_config.hs_config_info[0].interface_info.
                    audio_index + 1;
                dev->adev.alt = alt;
                if (dev->adev.alt_max_pkt_size != NULL)
                        max_pkt_size = dev->adev.max_pkt_size =
                            dev->adev.alt_max_pkt_size[dev->adev.alt];
                break;
        case INDEX_VIDEO:
                usb_interface_index =
                    dev->current_pcb_config.hs_config_info[0].interface_info.
                    video_index + 1;
                dev->video_mode.alt = alt;
                if (dev->video_mode.alt_max_pkt_size != NULL)
                        max_pkt_size = dev->video_mode.max_pkt_size =
                            dev->video_mode.alt_max_pkt_size[dev->video_mode.
                                                             alt];
                break;
        case INDEX_VANC:
                if (dev->board.no_alt_vanc)
                        return 0;
                usb_interface_index =
                    dev->current_pcb_config.hs_config_info[0].interface_info.
                    vanc_index + 1;
                dev->vbi_mode.alt = alt;
                if (dev->vbi_mode.alt_max_pkt_size != NULL)
                        max_pkt_size = dev->vbi_mode.max_pkt_size =
                            dev->vbi_mode.alt_max_pkt_size[dev->vbi_mode.alt];
                break;
        case INDEX_HANC:
                usb_interface_index =
                    dev->current_pcb_config.hs_config_info[0].interface_info.
                    hanc_index + 1;
                dev->sliced_cc_mode.alt = alt;
                if (dev->sliced_cc_mode.alt_max_pkt_size != NULL)
                        max_pkt_size = dev->sliced_cc_mode.max_pkt_size =
                            dev->sliced_cc_mode.alt_max_pkt_size[dev->
                                                                 sliced_cc_mode.
                                                                 alt];
                break;
        default:
                break;
        }

        if (alt > 0 && max_pkt_size == 0) {
                dev_err(dev->dev,
                        "can't change interface %d alt no. to %d: Max. Pkt size = 0\n",
                        usb_interface_index, alt);
                /*To workaround error number=-71 on EP0 for videograbber,
                 need add following codes.*/
                if (dev->board.no_alt_vanc)
                        return -1;
        }

        cx231xx_coredbg("setting alternate %d with wMaxPacketSize=%u,Interface = %d\n",
                        alt, max_pkt_size,
                        usb_interface_index);

        if (usb_interface_index > 0) {
                status = usb_set_interface(dev->udev, usb_interface_index, alt);
                if (status < 0) {
                        dev_err(dev->dev,
                                "can't change interface %d alt no. to %d (err=%i)\n",
                                usb_interface_index, alt, status);
                        return status;
                }
        }

        return status;
}
EXPORT_SYMBOL_GPL(cx231xx_set_alt_setting);

int cx231xx_gpio_set(struct cx231xx *dev, struct cx231xx_reg_seq *gpio)
{
        int rc = 0;

        if (!gpio)
                return rc;

        /* Send GPIO reset sequences specified at board entry */
        while (gpio->sleep >= 0) {
                rc = cx231xx_set_gpio_value(dev, gpio->bit, gpio->val);
                if (rc < 0)
                        return rc;

                if (gpio->sleep > 0)
                        msleep(gpio->sleep);

                gpio++;
        }
        return rc;
}

int cx231xx_demod_reset(struct cx231xx *dev)
{

        u8 status = 0;
        u8 value[4] = { 0, 0, 0, 0 };

        status = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, PWR_CTL_EN,
                                 value, 4);

        cx231xx_coredbg("reg0x%x=0x%x 0x%x 0x%x 0x%x\n", PWR_CTL_EN,
                        value[0], value[1], value[2], value[3]);

        cx231xx_coredbg("Enter cx231xx_demod_reset()\n");

        value[1] = (u8) 0x3;
        status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
                                        PWR_CTL_EN, value, 4);
        msleep(10);

        value[1] = (u8) 0x0;
        status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
                                        PWR_CTL_EN, value, 4);
        msleep(10);

        value[1] = (u8) 0x3;
        status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
                                        PWR_CTL_EN, value, 4);
        msleep(10);

        status = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, PWR_CTL_EN,
                                 value, 4);

        cx231xx_coredbg("reg0x%x=0x%x 0x%x 0x%x 0x%x\n", PWR_CTL_EN,
                        value[0], value[1], value[2], value[3]);

        return status;
}
EXPORT_SYMBOL_GPL(cx231xx_demod_reset);
int is_fw_load(struct cx231xx *dev)
{
        return cx231xx_check_fw(dev);
}
EXPORT_SYMBOL_GPL(is_fw_load);

int cx231xx_set_mode(struct cx231xx *dev, enum cx231xx_mode set_mode)
{
        int errCode = 0;

        if (dev->mode == set_mode)
                return 0;

        if (set_mode == CX231XX_SUSPEND) {
                /* Set the chip in power saving mode */
                dev->mode = set_mode;
        }

        /* Resource is locked */
        if (dev->mode != CX231XX_SUSPEND)
                return -EINVAL;

        dev->mode = set_mode;

        if (dev->mode == CX231XX_DIGITAL_MODE)/* Set Digital power mode */ {
        /* set AGC mode to Digital */
                switch (dev->model) {
                case CX231XX_BOARD_CNXT_CARRAERA:
                case CX231XX_BOARD_CNXT_RDE_250:
                case CX231XX_BOARD_CNXT_SHELBY:
                case CX231XX_BOARD_CNXT_RDU_250:
                errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 0);
                        break;
                case CX231XX_BOARD_CNXT_RDE_253S:
                case CX231XX_BOARD_CNXT_RDU_253S:
                case CX231XX_BOARD_PV_PLAYTV_USB_HYBRID:
                        errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 1);
                        break;
                case CX231XX_BOARD_HAUPPAUGE_EXETER:
                case CX231XX_BOARD_HAUPPAUGE_930C_HD_1113xx:
                        errCode = cx231xx_set_power_mode(dev,
                                                POLARIS_AVMODE_DIGITAL);
                        break;
                default:
                        break;
                }
        } else/* Set Analog Power mode */ {
        /* set AGC mode to Analog */
                switch (dev->model) {
                case CX231XX_BOARD_CNXT_CARRAERA:
                case CX231XX_BOARD_CNXT_RDE_250:
                case CX231XX_BOARD_CNXT_SHELBY:
                case CX231XX_BOARD_CNXT_RDU_250:
                errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 1);
                        break;
                case CX231XX_BOARD_CNXT_RDE_253S:
                case CX231XX_BOARD_CNXT_RDU_253S:
                case CX231XX_BOARD_HAUPPAUGE_EXETER:
                case CX231XX_BOARD_HAUPPAUGE_930C_HD_1113xx:
                case CX231XX_BOARD_PV_PLAYTV_USB_HYBRID:
                case CX231XX_BOARD_HAUPPAUGE_USB2_FM_PAL:
                case CX231XX_BOARD_HAUPPAUGE_USB2_FM_NTSC:
                        errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 0);
                        break;
                default:
                        break;
                }
        }

        if (errCode < 0) {
                dev_err(dev->dev, "Failed to set devmode to %s: error: %i",
                        dev->mode == CX231XX_DIGITAL_MODE ? "digital" : "analog",
                        errCode);
                return errCode;
        }

        return 0;
}
EXPORT_SYMBOL_GPL(cx231xx_set_mode);

int cx231xx_ep5_bulkout(struct cx231xx *dev, u8 *firmware, u16 size)
{
        int errCode = 0;
        int actlen = -1;
        int ret = -ENOMEM;
        u32 *buffer;

        buffer = kmemdup(firmware, EP5_BUF_SIZE, GFP_KERNEL);
        if (buffer == NULL)
                return -ENOMEM;

        ret = usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, 5),
                        buffer, EP5_BUF_SIZE, &actlen, EP5_TIMEOUT_MS);

        if (ret)
                dev_err(dev->dev,
                        "bulk message failed: %d (%d/%d)", ret,
                        size, actlen);
        else {
                errCode = actlen != size ? -1 : 0;
        }
        kfree(buffer);
        return errCode;
}

/*****************************************************************
*                URB Streaming functions                         *
******************************************************************/

/*
 * IRQ callback, called by URB callback
 */
static void cx231xx_isoc_irq_callback(struct urb *urb)
{
        struct cx231xx_dmaqueue *dma_q = urb->context;
        struct cx231xx_video_mode *vmode =
            container_of(dma_q, struct cx231xx_video_mode, vidq);
        struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
        unsigned long flags;
        int i;

        switch (urb->status) {
        case 0:         /* success */
        case -ETIMEDOUT:        /* NAK */
                break;
        case -ECONNRESET:       /* kill */
        case -ENOENT:
        case -ESHUTDOWN:
                return;
        default:                /* error */
                cx231xx_isocdbg("urb completion error %d.\n", urb->status);
                break;
        }

        /* Copy data from URB */
        spin_lock_irqsave(&dev->video_mode.slock, flags);
        dev->video_mode.isoc_ctl.isoc_copy(dev, urb);
        spin_unlock_irqrestore(&dev->video_mode.slock, flags);

        /* Reset urb buffers */
        for (i = 0; i < urb->number_of_packets; i++) {
                urb->iso_frame_desc[i].status = 0;
                urb->iso_frame_desc[i].actual_length = 0;
        }

        urb->status = usb_submit_urb(urb, GFP_ATOMIC);
        if (urb->status) {
                cx231xx_isocdbg("urb resubmit failed (error=%i)\n",
                                urb->status);
        }
}
/*****************************************************************
*                URB Streaming functions                         *
******************************************************************/

/*
 * IRQ callback, called by URB callback
 */
static void cx231xx_bulk_irq_callback(struct urb *urb)
{
        struct cx231xx_dmaqueue *dma_q = urb->context;
        struct cx231xx_video_mode *vmode =
            container_of(dma_q, struct cx231xx_video_mode, vidq);
        struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
        unsigned long flags;

        switch (urb->status) {
        case 0:         /* success */
        case -ETIMEDOUT:        /* NAK */
                break;
        case -ECONNRESET:       /* kill */
        case -ENOENT:
        case -ESHUTDOWN:
                return;
        case -EPIPE:            /* stall */
                cx231xx_isocdbg("urb completion error - device is stalled.\n");
                return;
        default:                /* error */
                cx231xx_isocdbg("urb completion error %d.\n", urb->status);
                break;
        }

        /* Copy data from URB */
        spin_lock_irqsave(&dev->video_mode.slock, flags);
        dev->video_mode.bulk_ctl.bulk_copy(dev, urb);
        spin_unlock_irqrestore(&dev->video_mode.slock, flags);

        /* Reset urb buffers */
        urb->status = usb_submit_urb(urb, GFP_ATOMIC);
        if (urb->status) {
                cx231xx_isocdbg("urb resubmit failed (error=%i)\n",
                                urb->status);
        }
}
/*
 * Stop and Deallocate URBs
 */
void cx231xx_uninit_isoc(struct cx231xx *dev)
{
        struct cx231xx_dmaqueue *dma_q = &dev->video_mode.vidq;
        struct urb *urb;
        int i;
        bool broken_pipe = false;

        cx231xx_isocdbg("cx231xx: called cx231xx_uninit_isoc\n");

        dev->video_mode.isoc_ctl.nfields = -1;
        for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
                urb = dev->video_mode.isoc_ctl.urb[i];
                if (urb) {
                        if (!irqs_disabled())
                                usb_kill_urb(urb);
                        else
                                usb_unlink_urb(urb);

                        if (dev->video_mode.isoc_ctl.transfer_buffer[i]) {
                                usb_free_coherent(dev->udev,
                                                  urb->transfer_buffer_length,
                                                  dev->video_mode.isoc_ctl.
                                                  transfer_buffer[i],
                                                  urb->transfer_dma);
                        }
                        if (urb->status == -EPIPE) {
                                broken_pipe = true;
                        }
                        usb_free_urb(urb);
                        dev->video_mode.isoc_ctl.urb[i] = NULL;
                }
                dev->video_mode.isoc_ctl.transfer_buffer[i] = NULL;
        }

        if (broken_pipe) {
                cx231xx_isocdbg("Reset endpoint to recover broken pipe.");
                usb_reset_endpoint(dev->udev, dev->video_mode.end_point_addr);
        }
        kfree(dev->video_mode.isoc_ctl.urb);
        kfree(dev->video_mode.isoc_ctl.transfer_buffer);
        kfree(dma_q->p_left_data);

        dev->video_mode.isoc_ctl.urb = NULL;
        dev->video_mode.isoc_ctl.transfer_buffer = NULL;
        dev->video_mode.isoc_ctl.num_bufs = 0;
        dma_q->p_left_data = NULL;

        if (dev->mode_tv == 0)
                cx231xx_capture_start(dev, 0, Raw_Video);
        else
                cx231xx_capture_start(dev, 0, TS1_serial_mode);


}
EXPORT_SYMBOL_GPL(cx231xx_uninit_isoc);

/*
 * Stop and Deallocate URBs
 */
void cx231xx_uninit_bulk(struct cx231xx *dev)
{
        struct cx231xx_dmaqueue *dma_q = &dev->video_mode.vidq;
        struct urb *urb;
        int i;
        bool broken_pipe = false;

        cx231xx_isocdbg("cx231xx: called cx231xx_uninit_bulk\n");

        dev->video_mode.bulk_ctl.nfields = -1;
        for (i = 0; i < dev->video_mode.bulk_ctl.num_bufs; i++) {
                urb = dev->video_mode.bulk_ctl.urb[i];
                if (urb) {
                        if (!irqs_disabled())
                                usb_kill_urb(urb);
                        else
                                usb_unlink_urb(urb);

                        if (dev->video_mode.bulk_ctl.transfer_buffer[i]) {
                                usb_free_coherent(dev->udev,
                                                urb->transfer_buffer_length,
                                                dev->video_mode.bulk_ctl.
                                                transfer_buffer[i],
                                                urb->transfer_dma);
                        }
                        if (urb->status == -EPIPE) {
                                broken_pipe = true;
                        }
                        usb_free_urb(urb);
                        dev->video_mode.bulk_ctl.urb[i] = NULL;
                }
                dev->video_mode.bulk_ctl.transfer_buffer[i] = NULL;
        }

        if (broken_pipe) {
                cx231xx_isocdbg("Reset endpoint to recover broken pipe.");
                usb_reset_endpoint(dev->udev, dev->video_mode.end_point_addr);
        }
        kfree(dev->video_mode.bulk_ctl.urb);
        kfree(dev->video_mode.bulk_ctl.transfer_buffer);
        kfree(dma_q->p_left_data);

        dev->video_mode.bulk_ctl.urb = NULL;
        dev->video_mode.bulk_ctl.transfer_buffer = NULL;
        dev->video_mode.bulk_ctl.num_bufs = 0;
        dma_q->p_left_data = NULL;

        if (dev->mode_tv == 0)
                cx231xx_capture_start(dev, 0, Raw_Video);
        else
                cx231xx_capture_start(dev, 0, TS1_serial_mode);


}
EXPORT_SYMBOL_GPL(cx231xx_uninit_bulk);

/*
 * Allocate URBs and start IRQ
 */
int cx231xx_init_isoc(struct cx231xx *dev, int max_packets,
                      int num_bufs, int max_pkt_size,
                      int (*isoc_copy) (struct cx231xx *dev, struct urb *urb))
{
        struct cx231xx_dmaqueue *dma_q = &dev->video_mode.vidq;
        int i;
        int sb_size, pipe;
        struct urb *urb;
        int j, k;
        int rc;

        /* De-allocates all pending stuff */
        cx231xx_uninit_isoc(dev);

        dma_q->p_left_data = kzalloc(EP5_BUF_SIZE, GFP_KERNEL);
        if (dma_q->p_left_data == NULL)
                return -ENOMEM;

        dev->video_mode.isoc_ctl.isoc_copy = isoc_copy;
        dev->video_mode.isoc_ctl.num_bufs = num_bufs;
        dma_q->pos = 0;
        dma_q->is_partial_line = 0;
        dma_q->last_sav = 0;
        dma_q->current_field = -1;
        dma_q->field1_done = 0;
        dma_q->lines_per_field = dev->height / 2;
        dma_q->bytes_left_in_line = dev->width << 1;
        dma_q->lines_completed = 0;
        dma_q->mpeg_buffer_done = 0;
        dma_q->left_data_count = 0;
        dma_q->mpeg_buffer_completed = 0;
        dma_q->add_ps_package_head = CX231XX_NEED_ADD_PS_PACKAGE_HEAD;
        dma_q->ps_head[0] = 0x00;
        dma_q->ps_head[1] = 0x00;
        dma_q->ps_head[2] = 0x01;
        dma_q->ps_head[3] = 0xBA;
        for (i = 0; i < 8; i++)
                dma_q->partial_buf[i] = 0;

        dev->video_mode.isoc_ctl.urb =
            kcalloc(num_bufs, sizeof(void *), GFP_KERNEL);
        if (!dev->video_mode.isoc_ctl.urb) {
                dev_err(dev->dev,
                        "cannot alloc memory for usb buffers\n");
                kfree(dma_q->p_left_data);
                return -ENOMEM;
        }

        dev->video_mode.isoc_ctl.transfer_buffer =
            kcalloc(num_bufs, sizeof(void *), GFP_KERNEL);
        if (!dev->video_mode.isoc_ctl.transfer_buffer) {
                dev_err(dev->dev,
                        "cannot allocate memory for usbtransfer\n");
                kfree(dev->video_mode.isoc_ctl.urb);
                kfree(dma_q->p_left_data);
                return -ENOMEM;
        }

        dev->video_mode.isoc_ctl.max_pkt_size = max_pkt_size;
        dev->video_mode.isoc_ctl.buf = NULL;

        sb_size = max_packets * dev->video_mode.isoc_ctl.max_pkt_size;

        if (dev->mode_tv == 1)
                dev->video_mode.end_point_addr = 0x81;
        else
                dev->video_mode.end_point_addr = 0x84;


        /* allocate urbs and transfer buffers */
        for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
                urb = usb_alloc_urb(max_packets, GFP_KERNEL);
                if (!urb) {
                        cx231xx_uninit_isoc(dev);
                        return -ENOMEM;
                }
                dev->video_mode.isoc_ctl.urb[i] = urb;

                dev->video_mode.isoc_ctl.transfer_buffer[i] =
                    usb_alloc_coherent(dev->udev, sb_size, GFP_KERNEL,
                                       &urb->transfer_dma);
                if (!dev->video_mode.isoc_ctl.transfer_buffer[i]) {
                        dev_err(dev->dev,
                                "unable to allocate %i bytes for transfer buffer %i\n",
                                sb_size, i);
                        cx231xx_uninit_isoc(dev);
                        return -ENOMEM;
                }
                memset(dev->video_mode.isoc_ctl.transfer_buffer[i], 0, sb_size);

                pipe =
                    usb_rcvisocpipe(dev->udev, dev->video_mode.end_point_addr);

                usb_fill_int_urb(urb, dev->udev, pipe,
                                 dev->video_mode.isoc_ctl.transfer_buffer[i],
                                 sb_size, cx231xx_isoc_irq_callback, dma_q, 1);

                urb->number_of_packets = max_packets;
                urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;

                k = 0;
                for (j = 0; j < max_packets; j++) {
                        urb->iso_frame_desc[j].offset = k;
                        urb->iso_frame_desc[j].length =
                            dev->video_mode.isoc_ctl.max_pkt_size;
                        k += dev->video_mode.isoc_ctl.max_pkt_size;
                }
        }

        init_waitqueue_head(&dma_q->wq);

        /* submit urbs and enables IRQ */
        for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
                rc = usb_submit_urb(dev->video_mode.isoc_ctl.urb[i],
                                    GFP_ATOMIC);
                if (rc) {
                        dev_err(dev->dev,
                                "submit of urb %i failed (error=%i)\n", i,
                                rc);
                        cx231xx_uninit_isoc(dev);
                        return rc;
                }
        }

        if (dev->mode_tv == 0)
                cx231xx_capture_start(dev, 1, Raw_Video);
        else
                cx231xx_capture_start(dev, 1, TS1_serial_mode);

        return 0;
}
EXPORT_SYMBOL_GPL(cx231xx_init_isoc);

/*
 * Allocate URBs and start IRQ
 */
int cx231xx_init_bulk(struct cx231xx *dev, int max_packets,
                      int num_bufs, int max_pkt_size,
                      int (*bulk_copy) (struct cx231xx *dev, struct urb *urb))
{
        struct cx231xx_dmaqueue *dma_q = &dev->video_mode.vidq;
        int i;
        int sb_size, pipe;
        struct urb *urb;
        int rc;

        dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;

        cx231xx_coredbg("Setting Video mux to %d\n", dev->video_input);

        video_mux(dev, dev->video_input);

        /* De-allocates all pending stuff */
        cx231xx_uninit_bulk(dev);

        dev->video_mode.bulk_ctl.bulk_copy = bulk_copy;
        dev->video_mode.bulk_ctl.num_bufs = num_bufs;
        dma_q->pos = 0;
        dma_q->is_partial_line = 0;
        dma_q->last_sav = 0;
        dma_q->current_field = -1;
        dma_q->field1_done = 0;
        dma_q->lines_per_field = dev->height / 2;
        dma_q->bytes_left_in_line = dev->width << 1;
        dma_q->lines_completed = 0;
        dma_q->mpeg_buffer_done = 0;
        dma_q->left_data_count = 0;
        dma_q->mpeg_buffer_completed = 0;
        dma_q->ps_head[0] = 0x00;
        dma_q->ps_head[1] = 0x00;
        dma_q->ps_head[2] = 0x01;
        dma_q->ps_head[3] = 0xBA;
        for (i = 0; i < 8; i++)
                dma_q->partial_buf[i] = 0;

        dev->video_mode.bulk_ctl.urb =
            kcalloc(num_bufs, sizeof(void *), GFP_KERNEL);
        if (!dev->video_mode.bulk_ctl.urb) {
                dev_err(dev->dev,
                        "cannot alloc memory for usb buffers\n");
                return -ENOMEM;
        }

        dev->video_mode.bulk_ctl.transfer_buffer =
            kcalloc(num_bufs, sizeof(void *), GFP_KERNEL);
        if (!dev->video_mode.bulk_ctl.transfer_buffer) {
                dev_err(dev->dev,
                        "cannot allocate memory for usbtransfer\n");
                kfree(dev->video_mode.bulk_ctl.urb);
                return -ENOMEM;
        }

        dev->video_mode.bulk_ctl.max_pkt_size = max_pkt_size;
        dev->video_mode.bulk_ctl.buf = NULL;

        sb_size = max_packets * dev->video_mode.bulk_ctl.max_pkt_size;

        if (dev->mode_tv == 1)
                dev->video_mode.end_point_addr = 0x81;
        else
                dev->video_mode.end_point_addr = 0x84;


        /* allocate urbs and transfer buffers */
        for (i = 0; i < dev->video_mode.bulk_ctl.num_bufs; i++) {
                urb = usb_alloc_urb(0, GFP_KERNEL);
                if (!urb) {
                        cx231xx_uninit_bulk(dev);
                        return -ENOMEM;
                }
                dev->video_mode.bulk_ctl.urb[i] = urb;
                urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;

                dev->video_mode.bulk_ctl.transfer_buffer[i] =
                    usb_alloc_coherent(dev->udev, sb_size, GFP_KERNEL,
                                     &urb->transfer_dma);
                if (!dev->video_mode.bulk_ctl.transfer_buffer[i]) {
                        dev_err(dev->dev,
                                "unable to allocate %i bytes for transfer buffer %i\n",
                                sb_size, i);
                        cx231xx_uninit_bulk(dev);
                        return -ENOMEM;
                }
                memset(dev->video_mode.bulk_ctl.transfer_buffer[i], 0, sb_size);

                pipe = usb_rcvbulkpipe(dev->udev,
                                 dev->video_mode.end_point_addr);
                usb_fill_bulk_urb(urb, dev->udev, pipe,
                                  dev->video_mode.bulk_ctl.transfer_buffer[i],
                                  sb_size, cx231xx_bulk_irq_callback, dma_q);
        }

        /* clear halt */
        rc = usb_clear_halt(dev->udev, dev->video_mode.bulk_ctl.urb[0]->pipe);
        if (rc < 0) {
                dev_err(dev->dev,
                        "failed to clear USB bulk endpoint stall/halt condition (error=%i)\n",
                        rc);
                cx231xx_uninit_bulk(dev);
                return rc;
        }

        init_waitqueue_head(&dma_q->wq);

        /* submit urbs and enables IRQ */
        for (i = 0; i < dev->video_mode.bulk_ctl.num_bufs; i++) {
                rc = usb_submit_urb(dev->video_mode.bulk_ctl.urb[i],
                                    GFP_ATOMIC);
                if (rc) {
                        dev_err(dev->dev,
                                "submit of urb %i failed (error=%i)\n", i, rc);
                        cx231xx_uninit_bulk(dev);
                        return rc;
                }
        }

        if (dev->mode_tv == 0)
                cx231xx_capture_start(dev, 1, Raw_Video);
        else
                cx231xx_capture_start(dev, 1, TS1_serial_mode);

        return 0;
}
EXPORT_SYMBOL_GPL(cx231xx_init_bulk);
void cx231xx_stop_TS1(struct cx231xx *dev)
{
        u8 val[4] = { 0, 0, 0, 0 };

        val[0] = 0x00;
        val[1] = 0x03;
        val[2] = 0x00;
        val[3] = 0x00;
        cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
                        TS_MODE_REG, val, 4);

        val[0] = 0x00;
        val[1] = 0x70;
        val[2] = 0x04;
        val[3] = 0x00;
        cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
                        TS1_CFG_REG, val, 4);
}
/* EXPORT_SYMBOL_GPL(cx231xx_stop_TS1); */
void cx231xx_start_TS1(struct cx231xx *dev)
{
        u8 val[4] = { 0, 0, 0, 0 };

        val[0] = 0x03;
        val[1] = 0x03;
        val[2] = 0x00;
        val[3] = 0x00;
        cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
                        TS_MODE_REG, val, 4);

        val[0] = 0x04;
        val[1] = 0xA3;
        val[2] = 0x3B;
        val[3] = 0x00;
        cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
                        TS1_CFG_REG, val, 4);
}
/* EXPORT_SYMBOL_GPL(cx231xx_start_TS1); */
/*****************************************************************
*             Device Init/UnInit functions                       *
******************************************************************/
int cx231xx_dev_init(struct cx231xx *dev)
{
        int errCode = 0;

        /* Initialize I2C bus */

        /* External Master 1 Bus */
        dev->i2c_bus[0].nr = 0;
        dev->i2c_bus[0].dev = dev;
        dev->i2c_bus[0].i2c_period = I2C_SPEED_100K;    /* 100 KHz */
        dev->i2c_bus[0].i2c_nostop = 0;
        dev->i2c_bus[0].i2c_reserve = 0;
        dev->i2c_bus[0].i2c_rc = -ENODEV;

        /* External Master 2 Bus */
        dev->i2c_bus[1].nr = 1;
        dev->i2c_bus[1].dev = dev;
        dev->i2c_bus[1].i2c_period = I2C_SPEED_100K;    /* 100 KHz */
        dev->i2c_bus[1].i2c_nostop = 0;
        dev->i2c_bus[1].i2c_reserve = 0;
        dev->i2c_bus[1].i2c_rc = -ENODEV;

        /* Internal Master 3 Bus */
        dev->i2c_bus[2].nr = 2;
        dev->i2c_bus[2].dev = dev;
        dev->i2c_bus[2].i2c_period = I2C_SPEED_100K;    /* 100kHz */
        dev->i2c_bus[2].i2c_nostop = 0;
        dev->i2c_bus[2].i2c_reserve = 0;
        dev->i2c_bus[2].i2c_rc = -ENODEV;

        /* register I2C buses */
        errCode = cx231xx_i2c_register(&dev->i2c_bus[0]);
        if (errCode < 0)
                return errCode;
        errCode = cx231xx_i2c_register(&dev->i2c_bus[1]);
        if (errCode < 0)
                return errCode;
        errCode = cx231xx_i2c_register(&dev->i2c_bus[2]);
        if (errCode < 0)
                return errCode;

        errCode = cx231xx_i2c_mux_create(dev);
        if (errCode < 0) {
                dev_err(dev->dev,
                        "%s: Failed to create I2C mux\n", __func__);
                return errCode;
        }
        errCode = cx231xx_i2c_mux_register(dev, 0);
        if (errCode < 0)
                return errCode;

        errCode = cx231xx_i2c_mux_register(dev, 1);
        if (errCode < 0)
                return errCode;

        /* scan the real bus segments in the order of physical port numbers */
        cx231xx_do_i2c_scan(dev, I2C_0);
        cx231xx_do_i2c_scan(dev, I2C_1_MUX_1);
        cx231xx_do_i2c_scan(dev, I2C_2);
        cx231xx_do_i2c_scan(dev, I2C_1_MUX_3);

        /* init hardware */
        /* Note : with out calling set power mode function,
        afe can not be set up correctly */
        if (dev->board.external_av) {
                errCode = cx231xx_set_power_mode(dev,
                                 POLARIS_AVMODE_ENXTERNAL_AV);
                if (errCode < 0) {
                        dev_err(dev->dev,
                                "%s: Failed to set Power - errCode [%d]!\n",
                                __func__, errCode);
                        return errCode;
                }
        } else {
                errCode = cx231xx_set_power_mode(dev,
                                 POLARIS_AVMODE_ANALOGT_TV);
                if (errCode < 0) {
                        dev_err(dev->dev,
                                "%s: Failed to set Power - errCode [%d]!\n",
                                __func__, errCode);
                        return errCode;
                }
        }

        /* reset the Tuner, if it is a Xceive tuner */
        if ((dev->board.tuner_type == TUNER_XC5000) ||
            (dev->board.tuner_type == TUNER_XC2028))
                        cx231xx_gpio_set(dev, dev->board.tuner_gpio);

        /* initialize Colibri block */
        errCode = cx231xx_afe_init_super_block(dev, 0x23c);
        if (errCode < 0) {
                dev_err(dev->dev,
                        "%s: cx231xx_afe init super block - errCode [%d]!\n",
                        __func__, errCode);
                return errCode;
        }
        errCode = cx231xx_afe_init_channels(dev);
        if (errCode < 0) {
                dev_err(dev->dev,
                        "%s: cx231xx_afe init channels - errCode [%d]!\n",
                        __func__, errCode);
                return errCode;
        }

        /* Set DIF in By pass mode */
        errCode = cx231xx_dif_set_standard(dev, DIF_USE_BASEBAND);
        if (errCode < 0) {
                dev_err(dev->dev,
                        "%s: cx231xx_dif set to By pass mode - errCode [%d]!\n",
                        __func__, errCode);
                return errCode;
        }

        /* I2S block related functions */
        errCode = cx231xx_i2s_blk_initialize(dev);
        if (errCode < 0) {
                dev_err(dev->dev,
                        "%s: cx231xx_i2s block initialize - errCode [%d]!\n",
                        __func__, errCode);
                return errCode;
        }

        /* init control pins */
        errCode = cx231xx_init_ctrl_pin_status(dev);
        if (errCode < 0) {
                dev_err(dev->dev,
                        "%s: cx231xx_init ctrl pins - errCode [%d]!\n",
                        __func__, errCode);
                return errCode;
        }

        /* set AGC mode to Analog */
        switch (dev->model) {
        case CX231XX_BOARD_CNXT_CARRAERA:
        case CX231XX_BOARD_CNXT_RDE_250:
        case CX231XX_BOARD_CNXT_SHELBY:
        case CX231XX_BOARD_CNXT_RDU_250:
        errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 1);
                break;
        case CX231XX_BOARD_CNXT_RDE_253S:
        case CX231XX_BOARD_CNXT_RDU_253S:
        case CX231XX_BOARD_HAUPPAUGE_EXETER:
        case CX231XX_BOARD_HAUPPAUGE_930C_HD_1113xx:
        case CX231XX_BOARD_PV_PLAYTV_USB_HYBRID:
        case CX231XX_BOARD_HAUPPAUGE_USB2_FM_PAL:
        case CX231XX_BOARD_HAUPPAUGE_USB2_FM_NTSC:
        errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 0);
                break;
        default:
                break;
        }
        if (errCode < 0) {
                dev_err(dev->dev,
                        "%s: cx231xx_AGC mode to Analog - errCode [%d]!\n",
                        __func__, errCode);
                return errCode;
        }

        /* set all alternate settings to zero initially */
        cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
        cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
        cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
        if (dev->board.has_dvb)
                cx231xx_set_alt_setting(dev, INDEX_TS1, 0);

        errCode = 0;
        return errCode;
}
EXPORT_SYMBOL_GPL(cx231xx_dev_init);

void cx231xx_dev_uninit(struct cx231xx *dev)
{
        /* Un Initialize I2C bus */
        cx231xx_i2c_mux_unregister(dev);
        cx231xx_i2c_unregister(&dev->i2c_bus[2]);
        cx231xx_i2c_unregister(&dev->i2c_bus[1]);
        cx231xx_i2c_unregister(&dev->i2c_bus[0]);
}
EXPORT_SYMBOL_GPL(cx231xx_dev_uninit);

/*****************************************************************
*              G P I O related functions                         *
******************************************************************/
int cx231xx_send_gpio_cmd(struct cx231xx *dev, u32 gpio_bit, u8 *gpio_val,
                          u8 len, u8 request, u8 direction)
{
        int status = 0;
        struct VENDOR_REQUEST_IN ven_req;

        /* Set wValue */
        ven_req.wValue = (u16) (gpio_bit >> 16 & 0xffff);

        /* set request */
        if (!request) {
                if (direction)
                        ven_req.bRequest = VRT_GET_GPIO;        /* 0x9 gpio */
                else
                        ven_req.bRequest = VRT_SET_GPIO;        /* 0x8 gpio */
        } else {
                if (direction)
                        ven_req.bRequest = VRT_GET_GPIE;        /* 0xb gpie */
                else
                        ven_req.bRequest = VRT_SET_GPIE;        /* 0xa gpie */
        }

        /* set index value */
        ven_req.wIndex = (u16) (gpio_bit & 0xffff);

        /* set wLength value */
        ven_req.wLength = len;

        /* set bData value */
        ven_req.bData = 0;

        /* set the buffer for read / write */
        ven_req.pBuff = gpio_val;

        /* set the direction */
        if (direction) {
                ven_req.direction = USB_DIR_IN;
                memset(ven_req.pBuff, 0x00, ven_req.wLength);
        } else
                ven_req.direction = USB_DIR_OUT;


        /* call common vendor command request */
        status = cx231xx_send_vendor_cmd(dev, &ven_req);
        if (status < 0) {
                dev_err(dev->dev, "%s: failed with status -%d\n",
                        __func__, status);
        }

        return status;
}
EXPORT_SYMBOL_GPL(cx231xx_send_gpio_cmd);

/*****************************************************************
 *    C O N T R O L - Register R E A D / W R I T E functions     *
 *****************************************************************/
int cx231xx_mode_register(struct cx231xx *dev, u16 address, u32 mode)
{
        u8 value[4] = { 0x0, 0x0, 0x0, 0x0 };
        u32 tmp = 0;
        int status = 0;

        status =
            cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, address, value, 4);
        if (status < 0)
                return status;

        tmp = le32_to_cpu(*((__le32 *) value));
        tmp |= mode;

        value[0] = (u8) tmp;
        value[1] = (u8) (tmp >> 8);
        value[2] = (u8) (tmp >> 16);
        value[3] = (u8) (tmp >> 24);

        status =
            cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, address, value, 4);

        return status;
}

/*****************************************************************
 *            I 2 C Internal C O N T R O L   functions           *
 *****************************************************************/
int cx231xx_read_i2c_master(struct cx231xx *dev, u8 dev_addr, u16 saddr,
                          u8 saddr_len, u32 *data, u8 data_len, int master)
{
        int status = 0;
        struct cx231xx_i2c_xfer_data req_data;
        u8 value[64] = "0";

        if (saddr_len == 0)
                saddr = 0;
        else if (saddr_len == 1)
                saddr &= 0xff;

        /* prepare xfer_data struct */
        req_data.dev_addr = dev_addr >> 1;
        req_data.direction = I2C_M_RD;
        req_data.saddr_len = saddr_len;
        req_data.saddr_dat = saddr;
        req_data.buf_size = data_len;
        req_data.p_buffer = (u8 *) value;

        /* usb send command */
        if (master == 0)
                status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0],
                                         &req_data);
        else if (master == 1)
                status = dev->cx231xx_send_usb_command(&dev->i2c_bus[1],
                                         &req_data);
        else if (master == 2)
                status = dev->cx231xx_send_usb_command(&dev->i2c_bus[2],
                                         &req_data);

        if (status >= 0) {
                /* Copy the data read back to main buffer */
                if (data_len == 1)
                        *data = value[0];
                else if (data_len == 4)
                        *data =
                            value[0] | value[1] << 8 | value[2] << 16 | value[3]
                            << 24;
                else if (data_len > 4)
                        *data = value[saddr];
        }

        return status;
}

int cx231xx_write_i2c_master(struct cx231xx *dev, u8 dev_addr, u16 saddr,
                           u8 saddr_len, u32 data, u8 data_len, int master)
{
        int status = 0;
        u8 value[4] = { 0, 0, 0, 0 };
        struct cx231xx_i2c_xfer_data req_data;

        value[0] = (u8) data;
        value[1] = (u8) (data >> 8);
        value[2] = (u8) (data >> 16);
        value[3] = (u8) (data >> 24);

        if (saddr_len == 0)
                saddr = 0;
        else if (saddr_len == 1)
                saddr &= 0xff;

        /* prepare xfer_data struct */
        req_data.dev_addr = dev_addr >> 1;
        req_data.direction = 0;
        req_data.saddr_len = saddr_len;
        req_data.saddr_dat = saddr;
        req_data.buf_size = data_len;
        req_data.p_buffer = value;

        /* usb send command */
        if (master == 0)
                status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0],
                                 &req_data);
        else if (master == 1)
                status = dev->cx231xx_send_usb_command(&dev->i2c_bus[1],
                                 &req_data);
        else if (master == 2)
                status = dev->cx231xx_send_usb_command(&dev->i2c_bus[2],
                                 &req_data);

        return status;
}

int cx231xx_read_i2c_data(struct cx231xx *dev, u8 dev_addr, u16 saddr,
                          u8 saddr_len, u32 *data, u8 data_len)
{
        int status = 0;
        struct cx231xx_i2c_xfer_data req_data;
        u8 value[4] = { 0, 0, 0, 0 };

        if (saddr_len == 0)
                saddr = 0;
        else if (saddr_len == 1)
                saddr &= 0xff;

        /* prepare xfer_data struct */
        req_data.dev_addr = dev_addr >> 1;
        req_data.direction = I2C_M_RD;
        req_data.saddr_len = saddr_len;
        req_data.saddr_dat = saddr;
        req_data.buf_size = data_len;
        req_data.p_buffer = (u8 *) value;

        /* usb send command */
        status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0], &req_data);

        if (status >= 0) {
                /* Copy the data read back to main buffer */
                if (data_len == 1)
                        *data = value[0];
                else
                        *data =
                            value[0] | value[1] << 8 | value[2] << 16 | value[3]
                            << 24;
        }

        return status;
}

int cx231xx_write_i2c_data(struct cx231xx *dev, u8 dev_addr, u16 saddr,
                           u8 saddr_len, u32 data, u8 data_len)
{
        int status = 0;
        u8 value[4] = { 0, 0, 0, 0 };
        struct cx231xx_i2c_xfer_data req_data;

        value[0] = (u8) data;
        value[1] = (u8) (data >> 8);
        value[2] = (u8) (data >> 16);
        value[3] = (u8) (data >> 24);

        if (saddr_len == 0)
                saddr = 0;
        else if (saddr_len == 1)
                saddr &= 0xff;

        /* prepare xfer_data struct */
        req_data.dev_addr = dev_addr >> 1;
        req_data.direction = 0;
        req_data.saddr_len = saddr_len;
        req_data.saddr_dat = saddr;
        req_data.buf_size = data_len;
        req_data.p_buffer = value;

        /* usb send command */
        status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0], &req_data);

        return status;
}

int cx231xx_reg_mask_write(struct cx231xx *dev, u8 dev_addr, u8 size,
                           u16 register_address, u8 bit_start, u8 bit_end,
                           u32 value)
{
        int status = 0;
        u32 tmp;
        u32 mask = 0;
        int i;

        if (bit_start > (size - 1) || bit_end > (size - 1))
                return -1;

        if (size == 8) {
                status =
                    cx231xx_read_i2c_data(dev, dev_addr, register_address, 2,
                                          &tmp, 1);
        } else {
                status =
                    cx231xx_read_i2c_data(dev, dev_addr, register_address, 2,
                                          &tmp, 4);
        }

        if (status < 0)
                return status;

        mask = 1 << bit_end;
        for (i = bit_end; i > bit_start && i > 0; i--)
                mask = mask + (1 << (i - 1));

        value <<= bit_start;

        if (size == 8) {
                tmp &= ~mask;
                tmp |= value;
                tmp &= 0xff;
                status =
                    cx231xx_write_i2c_data(dev, dev_addr, register_address, 2,
                                           tmp, 1);
        } else {
                tmp &= ~mask;
                tmp |= value;
                status =
                    cx231xx_write_i2c_data(dev, dev_addr, register_address, 2,
                                           tmp, 4);
        }

        return status;
}

int cx231xx_read_modify_write_i2c_dword(struct cx231xx *dev, u8 dev_addr,
                                        u16 saddr, u32 mask, u32 value)
{
        u32 temp;
        int status = 0;

        status = cx231xx_read_i2c_data(dev, dev_addr, saddr, 2, &temp, 4);

        if (status < 0)
                return status;

        temp &= ~mask;
        temp |= value;

        status = cx231xx_write_i2c_data(dev, dev_addr, saddr, 2, temp, 4);

        return status;
}

u32 cx231xx_set_field(u32 field_mask, u32 data)
{
        u32 temp;

        for (temp = field_mask; (temp & 1) == 0; temp >>= 1)
                data <<= 1;

        return data;
}