cx23885-video.c

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/*
 *  Driver for the Conexant CX23885 PCIe bridge
 *
 *  Copyright (c) 2007 Steven Toth <[email protected]>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/init.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kmod.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/kthread.h>
#include <asm/div64.h>

#include "cx23885.h"
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include "cx23885-ioctl.h"
#include "tuner-xc2028.h"

#include <media/cx25840.h>

MODULE_DESCRIPTION("v4l2 driver module for cx23885 based TV cards");
MODULE_AUTHOR("Steven Toth <[email protected]>");
MODULE_LICENSE("GPL");

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

static unsigned int video_nr[] = {[0 ... (CX23885_MAXBOARDS - 1)] = UNSET };
static unsigned int vbi_nr[]   = {[0 ... (CX23885_MAXBOARDS - 1)] = UNSET };
static unsigned int radio_nr[] = {[0 ... (CX23885_MAXBOARDS - 1)] = UNSET };

module_param_array(video_nr, int, NULL, 0444);
module_param_array(vbi_nr,   int, NULL, 0444);
module_param_array(radio_nr, int, NULL, 0444);

MODULE_PARM_DESC(video_nr, "video device numbers");
MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
MODULE_PARM_DESC(radio_nr, "radio device numbers");

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

static unsigned int irq_debug;
module_param(irq_debug, int, 0644);
MODULE_PARM_DESC(irq_debug, "enable debug messages [IRQ handler]");

static unsigned int vid_limit = 16;
module_param(vid_limit, int, 0644);
MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");

#define dprintk(level, fmt, arg...)\
    do { if (video_debug >= level)\
        printk(KERN_DEBUG "%s: " fmt, dev->name, ## arg);\
    } while (0)

/* ------------------------------------------------------------------- */
/* static data                                                         */

#define FORMAT_FLAGS_PACKED       0x01
#if 0
static struct cx23885_fmt formats[] = {
    {
        .name     = "8 bpp, gray",
        .fourcc   = V4L2_PIX_FMT_GREY,
        .depth    = 8,
        .flags    = FORMAT_FLAGS_PACKED,
    }, {
        .name     = "15 bpp RGB, le",
        .fourcc   = V4L2_PIX_FMT_RGB555,
        .depth    = 16,
        .flags    = FORMAT_FLAGS_PACKED,
    }, {
        .name     = "15 bpp RGB, be",
        .fourcc   = V4L2_PIX_FMT_RGB555X,
        .depth    = 16,
        .flags    = FORMAT_FLAGS_PACKED,
    }, {
        .name     = "16 bpp RGB, le",
        .fourcc   = V4L2_PIX_FMT_RGB565,
        .depth    = 16,
        .flags    = FORMAT_FLAGS_PACKED,
    }, {
        .name     = "16 bpp RGB, be",
        .fourcc   = V4L2_PIX_FMT_RGB565X,
        .depth    = 16,
        .flags    = FORMAT_FLAGS_PACKED,
    }, {
        .name     = "24 bpp RGB, le",
        .fourcc   = V4L2_PIX_FMT_BGR24,
        .depth    = 24,
        .flags    = FORMAT_FLAGS_PACKED,
    }, {
        .name     = "32 bpp RGB, le",
        .fourcc   = V4L2_PIX_FMT_BGR32,
        .depth    = 32,
        .flags    = FORMAT_FLAGS_PACKED,
    }, {
        .name     = "32 bpp RGB, be",
        .fourcc   = V4L2_PIX_FMT_RGB32,
        .depth    = 32,
        .flags    = FORMAT_FLAGS_PACKED,
    }, {
        .name     = "4:2:2, packed, YUYV",
        .fourcc   = V4L2_PIX_FMT_YUYV,
        .depth    = 16,
        .flags    = FORMAT_FLAGS_PACKED,
    }, {
        .name     = "4:2:2, packed, UYVY",
        .fourcc   = V4L2_PIX_FMT_UYVY,
        .depth    = 16,
        .flags    = FORMAT_FLAGS_PACKED,
    },
};
#else
static struct cx23885_fmt formats[] = {
    {
#if 0
        .name     = "4:2:2, packed, UYVY",
        .fourcc   = V4L2_PIX_FMT_UYVY,
        .depth    = 16,
        .flags    = FORMAT_FLAGS_PACKED,
    }, {
#endif
        .name     = "4:2:2, packed, YUYV",
        .fourcc   = V4L2_PIX_FMT_YUYV,
        .depth    = 16,
        .flags    = FORMAT_FLAGS_PACKED,
    }
};
#endif

static struct cx23885_fmt *format_by_fourcc(unsigned int fourcc)
{
    unsigned int i;

    for (i = 0; i < ARRAY_SIZE(formats); i++)
        if (formats[i].fourcc == fourcc)
            return formats+i;

    printk(KERN_ERR "%s(%c%c%c%c) NOT FOUND\n", __func__,
        (fourcc & 0xff),
        ((fourcc >> 8) & 0xff),
        ((fourcc >> 16) & 0xff),
        ((fourcc >> 24) & 0xff)
        );
    return NULL;
}

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

static const struct v4l2_queryctrl no_ctl = {
    .name  = "42",
    .flags = V4L2_CTRL_FLAG_DISABLED,
};

static struct cx23885_ctrl cx23885_ctls[] = {
    /* --- video --- */
    {
        .v = {
            .id            = V4L2_CID_BRIGHTNESS,
            .name          = "Brightness",
            .minimum       = 0x00,
            .maximum       = 0xff,
            .step          = 1,
            .default_value = 0x7f,
            .type          = V4L2_CTRL_TYPE_INTEGER,
        },
        .off                   = 128,
        .reg                   = LUMA_CTRL,
        .mask                  = 0x00ff,
        .shift                 = 0,
    }, {
        .v = {
            .id            = V4L2_CID_CONTRAST,
            .name          = "Contrast",
            .minimum       = 0,
            .maximum       = 0x7f,
            .step          = 1,
            .default_value = 0x3f,
            .type          = V4L2_CTRL_TYPE_INTEGER,
        },
        .off                   = 0,
        .reg                   = LUMA_CTRL,
        .mask                  = 0xff00,
        .shift                 = 8,
    }, {
        .v = {
            .id            = V4L2_CID_HUE,
            .name          = "Hue",
            .minimum       = -127,
            .maximum       = 128,
            .step          = 1,
            .default_value = 0x0,
            .type          = V4L2_CTRL_TYPE_INTEGER,
        },
        .off                   = 128,
        .reg                   = CHROMA_CTRL,
        .mask                  = 0xff0000,
        .shift                 = 16,
    }, {
        /* strictly, this only describes only U saturation.
         * V saturation is handled specially through code.
         */
        .v = {
            .id            = V4L2_CID_SATURATION,
            .name          = "Saturation",
            .minimum       = 0,
            .maximum       = 0x7f,
            .step          = 1,
            .default_value = 0x3f,
            .type          = V4L2_CTRL_TYPE_INTEGER,
        },
        .off                   = 0,
        .reg                   = CHROMA_CTRL,
        .mask                  = 0x00ff,
        .shift                 = 0,
    }, {
    /* --- audio --- */
        .v = {
            .id            = V4L2_CID_AUDIO_MUTE,
            .name          = "Mute",
            .minimum       = 0,
            .maximum       = 1,
            .default_value = 1,
            .type          = V4L2_CTRL_TYPE_BOOLEAN,
        },
        .reg                   = PATH1_CTL1,
        .mask                  = (0x1f << 24),
        .shift                 = 24,
    }, {
        .v = {
            .id            = V4L2_CID_AUDIO_VOLUME,
            .name          = "Volume",
            .minimum       = 0,
            .maximum       = 65535,
            .step          = 65535 / 100,
            .default_value = 65535,
            .type          = V4L2_CTRL_TYPE_INTEGER,
        },
        .reg                   = PATH1_VOL_CTL,
        .mask                  = 0xff,
        .shift                 = 0,
    }
};
static const int CX23885_CTLS = ARRAY_SIZE(cx23885_ctls);

/* Must be sorted from low to high control ID! */
static const u32 cx23885_user_ctrls[] = {
    V4L2_CID_USER_CLASS,
    V4L2_CID_BRIGHTNESS,
    V4L2_CID_CONTRAST,
    V4L2_CID_SATURATION,
    V4L2_CID_HUE,
    V4L2_CID_AUDIO_VOLUME,
    V4L2_CID_AUDIO_MUTE,
    0
};

static const u32 *ctrl_classes[] = {
    cx23885_user_ctrls,
    NULL
};

void cx23885_video_wakeup(struct cx23885_dev *dev,
    struct cx23885_dmaqueue *q, u32 count)
{
    struct cx23885_buffer *buf;
    int bc;

    for (bc = 0;; bc++) {
        if (list_empty(&q->active))
            break;
        buf = list_entry(q->active.next,
                 struct cx23885_buffer, vb.queue);

        /* count comes from the hw and is is 16bit wide --
         * this trick handles wrap-arounds correctly for
         * up to 32767 buffers in flight... */
        if ((s16) (count - buf->count) < 0)
            break;

        do_gettimeofday(&buf->vb.ts);
        dprintk(2, "[%p/%d] wakeup reg=%d buf=%d\n", buf, buf->vb.i,
            count, buf->count);
        buf->vb.state = VIDEOBUF_DONE;
        list_del(&buf->vb.queue);
        wake_up(&buf->vb.done);
    }
    if (list_empty(&q->active))
        del_timer(&q->timeout);
    else
        mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
    if (bc != 1)
        printk(KERN_ERR "%s: %d buffers handled (should be 1)\n",
            __func__, bc);
}

int cx23885_set_tvnorm(struct cx23885_dev *dev, v4l2_std_id norm)
{
    dprintk(1, "%s(norm = 0x%08x) name: [%s]\n",
        __func__,
        (unsigned int)norm,
        v4l2_norm_to_name(norm));

    dev->tvnorm = norm;

    call_all(dev, core, s_std, norm);

    return 0;
}

static struct video_device *cx23885_vdev_init(struct cx23885_dev *dev,
                    struct pci_dev *pci,
                    struct video_device *template,
                    char *type)
{
    struct video_device *vfd;
    dprintk(1, "%s()\n", __func__);

    vfd = video_device_alloc();
    if (NULL == vfd)
        return NULL;
    *vfd = *template;
    vfd->v4l2_dev = &dev->v4l2_dev;
    vfd->release = video_device_release;
    snprintf(vfd->name, sizeof(vfd->name), "%s (%s)",
         cx23885_boards[dev->board].name, type);
    video_set_drvdata(vfd, dev);
    return vfd;
}

static int cx23885_ctrl_query(struct v4l2_queryctrl *qctrl)
{
    int i;

    if (qctrl->id < V4L2_CID_BASE ||
        qctrl->id >= V4L2_CID_LASTP1)
        return -EINVAL;
    for (i = 0; i < CX23885_CTLS; i++)
        if (cx23885_ctls[i].v.id == qctrl->id)
            break;
    if (i == CX23885_CTLS) {
        *qctrl = no_ctl;
        return 0;
    }
    *qctrl = cx23885_ctls[i].v;
    return 0;
}

/* ------------------------------------------------------------------- */
/* resource management                                                 */

static int res_get(struct cx23885_dev *dev, struct cx23885_fh *fh,
    unsigned int bit)
{
    dprintk(1, "%s()\n", __func__);
    if (fh->resources & bit)
        /* have it already allocated */
        return 1;

    /* is it free? */
    mutex_lock(&dev->lock);
    if (dev->resources & bit) {
        /* no, someone else uses it */
        mutex_unlock(&dev->lock);
        return 0;
    }
    /* it's free, grab it */
    fh->resources  |= bit;
    dev->resources |= bit;
    dprintk(1, "res: get %d\n", bit);
    mutex_unlock(&dev->lock);
    return 1;
}

static int res_check(struct cx23885_fh *fh, unsigned int bit)
{
    return fh->resources & bit;
}

static int res_locked(struct cx23885_dev *dev, unsigned int bit)
{
    return dev->resources & bit;
}

static void res_free(struct cx23885_dev *dev, struct cx23885_fh *fh,
    unsigned int bits)
{
    BUG_ON((fh->resources & bits) != bits);
    dprintk(1, "%s()\n", __func__);

    mutex_lock(&dev->lock);
    fh->resources  &= ~bits;
    dev->resources &= ~bits;
    dprintk(1, "res: put %d\n", bits);
    mutex_unlock(&dev->lock);
}

static int cx23885_flatiron_write(struct cx23885_dev *dev, u8 reg, u8 data)
{
    /* 8 bit registers, 8 bit values */
    u8 buf[] = { reg, data };

    struct i2c_msg msg = { .addr = 0x98 >> 1,
        .flags = 0, .buf = buf, .len = 2 };

    return i2c_transfer(&dev->i2c_bus[2].i2c_adap, &msg, 1);
}

static u8 cx23885_flatiron_read(struct cx23885_dev *dev, u8 reg)
{
    /* 8 bit registers, 8 bit values */
    int ret;
    u8 b0[] = { reg };
    u8 b1[] = { 0 };

    struct i2c_msg msg[] = {
        { .addr = 0x98 >> 1, .flags = 0, .buf = b0, .len = 1 },
        { .addr = 0x98 >> 1, .flags = I2C_M_RD, .buf = b1, .len = 1 }
    };

    ret = i2c_transfer(&dev->i2c_bus[2].i2c_adap, &msg[0], 2);
    if (ret != 2)
        printk(KERN_ERR "%s() error\n", __func__);

    return b1[0];
}

static void cx23885_flatiron_dump(struct cx23885_dev *dev)
{
    int i;
    dprintk(1, "Flatiron dump\n");
    for (i = 0; i < 0x24; i++) {
        dprintk(1, "FI[%02x] = %02x\n", i,
            cx23885_flatiron_read(dev, i));
    }
}

static int cx23885_flatiron_mux(struct cx23885_dev *dev, int input)
{
    u8 val;
    dprintk(1, "%s(input = %d)\n", __func__, input);

    if (input == 1)
        val = cx23885_flatiron_read(dev, CH_PWR_CTRL1) & ~FLD_CH_SEL;
    else if (input == 2)
        val = cx23885_flatiron_read(dev, CH_PWR_CTRL1) | FLD_CH_SEL;
    else
        return -EINVAL;

    val |= 0x20; /* Enable clock to delta-sigma and dec filter */

    cx23885_flatiron_write(dev, CH_PWR_CTRL1, val);

    /* Wake up */
    cx23885_flatiron_write(dev, CH_PWR_CTRL2, 0);

    if (video_debug)
        cx23885_flatiron_dump(dev);

    return 0;
}

static int cx23885_video_mux(struct cx23885_dev *dev, unsigned int input)
{
    dprintk(1, "%s() video_mux: %d [vmux=%d, gpio=0x%x,0x%x,0x%x,0x%x]\n",
        __func__,
        input, INPUT(input)->vmux,
        INPUT(input)->gpio0, INPUT(input)->gpio1,
        INPUT(input)->gpio2, INPUT(input)->gpio3);
    dev->input = input;

    if (dev->board == CX23885_BOARD_MYGICA_X8506 ||
        dev->board == CX23885_BOARD_MAGICPRO_PROHDTVE2 ||
        dev->board == CX23885_BOARD_MYGICA_X8507) {
        /* Select Analog TV */
        if (INPUT(input)->type == CX23885_VMUX_TELEVISION)
            cx23885_gpio_clear(dev, GPIO_0);
    }

    /* Tell the internal A/V decoder */
    v4l2_subdev_call(dev->sd_cx25840, video, s_routing,
            INPUT(input)->vmux, 0, 0);

    if ((dev->board == CX23885_BOARD_HAUPPAUGE_HVR1800) ||
        (dev->board == CX23885_BOARD_MPX885) ||
        (dev->board == CX23885_BOARD_HAUPPAUGE_HVR1250) ||
        (dev->board == CX23885_BOARD_HAUPPAUGE_HVR1255) ||
        (dev->board == CX23885_BOARD_HAUPPAUGE_HVR1255_22111) ||
        (dev->board == CX23885_BOARD_HAUPPAUGE_HVR1850) ||
        (dev->board == CX23885_BOARD_MYGICA_X8507)) {
        /* Configure audio routing */
        v4l2_subdev_call(dev->sd_cx25840, audio, s_routing,
            INPUT(input)->amux, 0, 0);

        if (INPUT(input)->amux == CX25840_AUDIO7)
            cx23885_flatiron_mux(dev, 1);
        else if (INPUT(input)->amux == CX25840_AUDIO6)
            cx23885_flatiron_mux(dev, 2);
    }

    return 0;
}

static int cx23885_audio_mux(struct cx23885_dev *dev, unsigned int input)
{
    dprintk(1, "%s(input=%d)\n", __func__, input);

    /* The baseband video core of the cx23885 has two audio inputs.
     * LR1 and LR2. In almost every single case so far only HVR1xxx
     * cards we've only ever supported LR1. Time to support LR2,
     * which is available via the optional white breakout header on
     * the board.
     * We'll use a could of existing enums in the card struct to allow
     * devs to specify which baseband input they need, or just default
     * to what we've always used.
     */
    if (INPUT(input)->amux == CX25840_AUDIO7)
        cx23885_flatiron_mux(dev, 1);
    else if (INPUT(input)->amux == CX25840_AUDIO6)
        cx23885_flatiron_mux(dev, 2);
    else {
        /* Not specifically defined, assume the default. */
        cx23885_flatiron_mux(dev, 1);
    }

    return 0;
}

/* ------------------------------------------------------------------ */
static int cx23885_start_video_dma(struct cx23885_dev *dev,
               struct cx23885_dmaqueue *q,
               struct cx23885_buffer *buf)
{
    dprintk(1, "%s()\n", __func__);

    /* Stop the dma/fifo before we tamper with it's risc programs */
    cx_clear(VID_A_DMA_CTL, 0x11);

    /* setup fifo + format */
    cx23885_sram_channel_setup(dev, &dev->sram_channels[SRAM_CH01],
                buf->bpl, buf->risc.dma);

    /* reset counter */
    cx_write(VID_A_GPCNT_CTL, 3);
    q->count = 1;

    /* enable irq */
    cx23885_irq_add_enable(dev, 0x01);
    cx_set(VID_A_INT_MSK, 0x000011);

    /* start dma */
    cx_set(DEV_CNTRL2, (1<<5));
    cx_set(VID_A_DMA_CTL, 0x11); /* FIFO and RISC enable */

    return 0;
}


static int cx23885_restart_video_queue(struct cx23885_dev *dev,
                   struct cx23885_dmaqueue *q)
{
    struct cx23885_buffer *buf, *prev;
    struct list_head *item;
    dprintk(1, "%s()\n", __func__);

    if (!list_empty(&q->active)) {
        buf = list_entry(q->active.next, struct cx23885_buffer,
            vb.queue);
        dprintk(2, "restart_queue [%p/%d]: restart dma\n",
            buf, buf->vb.i);
        cx23885_start_video_dma(dev, q, buf);
        list_for_each(item, &q->active) {
            buf = list_entry(item, struct cx23885_buffer,
                vb.queue);
            buf->count    = q->count++;
        }
        mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
        return 0;
    }

    prev = NULL;
    for (;;) {
        if (list_empty(&q->queued))
            return 0;
        buf = list_entry(q->queued.next, struct cx23885_buffer,
            vb.queue);
        if (NULL == prev) {
            list_move_tail(&buf->vb.queue, &q->active);
            cx23885_start_video_dma(dev, q, buf);
            buf->vb.state = VIDEOBUF_ACTIVE;
            buf->count    = q->count++;
            mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
            dprintk(2, "[%p/%d] restart_queue - first active\n",
                buf, buf->vb.i);

        } else if (prev->vb.width  == buf->vb.width  &&
               prev->vb.height == buf->vb.height &&
               prev->fmt       == buf->fmt) {
            list_move_tail(&buf->vb.queue, &q->active);
            buf->vb.state = VIDEOBUF_ACTIVE;
            buf->count    = q->count++;
            prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
            prev->risc.jmp[2] = cpu_to_le32(0); /* Bits 63 - 32 */
            dprintk(2, "[%p/%d] restart_queue - move to active\n",
                buf, buf->vb.i);
        } else {
            return 0;
        }
        prev = buf;
    }
}

static int buffer_setup(struct videobuf_queue *q, unsigned int *count,
    unsigned int *size)
{
    struct cx23885_fh *fh = q->priv_data;

    *size = fh->fmt->depth*fh->width*fh->height >> 3;
    if (0 == *count)
        *count = 32;
    if (*size * *count > vid_limit * 1024 * 1024)
        *count = (vid_limit * 1024 * 1024) / *size;
    return 0;
}

static int buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
           enum v4l2_field field)
{
    struct cx23885_fh *fh  = q->priv_data;
    struct cx23885_dev *dev = fh->dev;
    struct cx23885_buffer *buf =
        container_of(vb, struct cx23885_buffer, vb);
    int rc, init_buffer = 0;
    u32 line0_offset, line1_offset;
    struct videobuf_dmabuf *dma = videobuf_to_dma(&buf->vb);
    int field_tff;

    BUG_ON(NULL == fh->fmt);
    if (fh->width  < 48 || fh->width  > norm_maxw(dev->tvnorm) ||
        fh->height < 32 || fh->height > norm_maxh(dev->tvnorm))
        return -EINVAL;
    buf->vb.size = (fh->width * fh->height * fh->fmt->depth) >> 3;
    if (0 != buf->vb.baddr  &&  buf->vb.bsize < buf->vb.size)
        return -EINVAL;

    if (buf->fmt       != fh->fmt    ||
        buf->vb.width  != fh->width  ||
        buf->vb.height != fh->height ||
        buf->vb.field  != field) {
        buf->fmt       = fh->fmt;
        buf->vb.width  = fh->width;
        buf->vb.height = fh->height;
        buf->vb.field  = field;
        init_buffer = 1;
    }

    if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
        init_buffer = 1;
        rc = videobuf_iolock(q, &buf->vb, NULL);
        if (0 != rc)
            goto fail;
    }

    if (init_buffer) {
        buf->bpl = buf->vb.width * buf->fmt->depth >> 3;
        switch (buf->vb.field) {
        case V4L2_FIELD_TOP:
            cx23885_risc_buffer(dev->pci, &buf->risc,
                     dma->sglist, 0, UNSET,
                     buf->bpl, 0, buf->vb.height);
            break;
        case V4L2_FIELD_BOTTOM:
            cx23885_risc_buffer(dev->pci, &buf->risc,
                     dma->sglist, UNSET, 0,
                     buf->bpl, 0, buf->vb.height);
            break;
        case V4L2_FIELD_INTERLACED:
            if (dev->tvnorm & V4L2_STD_NTSC)
                /* NTSC or  */
                field_tff = 1;
            else
                field_tff = 0;

            if (cx23885_boards[dev->board].force_bff)
                /* PAL / SECAM OR 888 in NTSC MODE */
                field_tff = 0;

            if (field_tff) {
                /* cx25840 transmits NTSC bottom field first */
                dprintk(1, "%s() Creating TFF/NTSC risc\n",
                    __func__);
                line0_offset = buf->bpl;
                line1_offset = 0;
            } else {
                /* All other formats are top field first */
                dprintk(1, "%s() Creating BFF/PAL/SECAM risc\n",
                    __func__);
                line0_offset = 0;
                line1_offset = buf->bpl;
            }
            cx23885_risc_buffer(dev->pci, &buf->risc,
                    dma->sglist, line0_offset,
                    line1_offset,
                    buf->bpl, buf->bpl,
                    buf->vb.height >> 1);
            break;
        case V4L2_FIELD_SEQ_TB:
            cx23885_risc_buffer(dev->pci, &buf->risc,
                     dma->sglist,
                     0, buf->bpl * (buf->vb.height >> 1),
                     buf->bpl, 0,
                     buf->vb.height >> 1);
            break;
        case V4L2_FIELD_SEQ_BT:
            cx23885_risc_buffer(dev->pci, &buf->risc,
                     dma->sglist,
                     buf->bpl * (buf->vb.height >> 1), 0,
                     buf->bpl, 0,
                     buf->vb.height >> 1);
            break;
        default:
            BUG();
        }
    }
    dprintk(2, "[%p/%d] buffer_prep - %dx%d %dbpp \"%s\" - dma=0x%08lx\n",
        buf, buf->vb.i,
        fh->width, fh->height, fh->fmt->depth, fh->fmt->name,
        (unsigned long)buf->risc.dma);

    buf->vb.state = VIDEOBUF_PREPARED;
    return 0;

 fail:
    cx23885_free_buffer(q, buf);
    return rc;
}

static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
{
    struct cx23885_buffer   *buf = container_of(vb,
        struct cx23885_buffer, vb);
    struct cx23885_buffer   *prev;
    struct cx23885_fh       *fh   = vq->priv_data;
    struct cx23885_dev      *dev  = fh->dev;
    struct cx23885_dmaqueue *q    = &dev->vidq;

    /* add jump to stopper */
    buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
    buf->risc.jmp[1] = cpu_to_le32(q->stopper.dma);
    buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */

    if (!list_empty(&q->queued)) {
        list_add_tail(&buf->vb.queue, &q->queued);
        buf->vb.state = VIDEOBUF_QUEUED;
        dprintk(2, "[%p/%d] buffer_queue - append to queued\n",
            buf, buf->vb.i);

    } else if (list_empty(&q->active)) {
        list_add_tail(&buf->vb.queue, &q->active);
        cx23885_start_video_dma(dev, q, buf);
        buf->vb.state = VIDEOBUF_ACTIVE;
        buf->count    = q->count++;
        mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
        dprintk(2, "[%p/%d] buffer_queue - first active\n",
            buf, buf->vb.i);

    } else {
        prev = list_entry(q->active.prev, struct cx23885_buffer,
            vb.queue);
        if (prev->vb.width  == buf->vb.width  &&
            prev->vb.height == buf->vb.height &&
            prev->fmt       == buf->fmt) {
            list_add_tail(&buf->vb.queue, &q->active);
            buf->vb.state = VIDEOBUF_ACTIVE;
            buf->count    = q->count++;
            prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
            /* 64 bit bits 63-32 */
            prev->risc.jmp[2] = cpu_to_le32(0);
            dprintk(2, "[%p/%d] buffer_queue - append to active\n",
                buf, buf->vb.i);

        } else {
            list_add_tail(&buf->vb.queue, &q->queued);
            buf->vb.state = VIDEOBUF_QUEUED;
            dprintk(2, "[%p/%d] buffer_queue - first queued\n",
                buf, buf->vb.i);
        }
    }
}

static void buffer_release(struct videobuf_queue *q,
    struct videobuf_buffer *vb)
{
    struct cx23885_buffer *buf = container_of(vb,
        struct cx23885_buffer, vb);

    cx23885_free_buffer(q, buf);
}

static struct videobuf_queue_ops cx23885_video_qops = {
    .buf_setup    = buffer_setup,
    .buf_prepare  = buffer_prepare,
    .buf_queue    = buffer_queue,
    .buf_release  = buffer_release,
};

static struct videobuf_queue *get_queue(struct cx23885_fh *fh)
{
    switch (fh->type) {
    case V4L2_BUF_TYPE_VIDEO_CAPTURE:
        return &fh->vidq;
    case V4L2_BUF_TYPE_VBI_CAPTURE:
        return &fh->vbiq;
    default:
        BUG();
        return NULL;
    }
}

static int get_resource(struct cx23885_fh *fh)
{
    switch (fh->type) {
    case V4L2_BUF_TYPE_VIDEO_CAPTURE:
        return RESOURCE_VIDEO;
    case V4L2_BUF_TYPE_VBI_CAPTURE:
        return RESOURCE_VBI;
    default:
        BUG();
        return 0;
    }
}

static int video_open(struct file *file)
{
    struct video_device *vdev = video_devdata(file);
    struct cx23885_dev *dev = video_drvdata(file);
    struct cx23885_fh *fh;
    enum v4l2_buf_type type = 0;
    int radio = 0;

    switch (vdev->vfl_type) {
    case VFL_TYPE_GRABBER:
        type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
        break;
    case VFL_TYPE_VBI:
        type = V4L2_BUF_TYPE_VBI_CAPTURE;
        break;
    case VFL_TYPE_RADIO:
        radio = 1;
        break;
    }

    dprintk(1, "open dev=%s radio=%d type=%s\n",
        video_device_node_name(vdev), radio, v4l2_type_names[type]);

    /* allocate + initialize per filehandle data */
    fh = kzalloc(sizeof(*fh), GFP_KERNEL);
    if (NULL == fh)
        return -ENOMEM;

    file->private_data = fh;
    fh->dev      = dev;
    fh->radio    = radio;
    fh->type     = type;
    fh->width    = 320;
    fh->height   = 240;
    fh->fmt      = format_by_fourcc(V4L2_PIX_FMT_YUYV);

    videobuf_queue_sg_init(&fh->vidq, &cx23885_video_qops,
                &dev->pci->dev, &dev->slock,
                V4L2_BUF_TYPE_VIDEO_CAPTURE,
                V4L2_FIELD_INTERLACED,
                sizeof(struct cx23885_buffer),
                fh, NULL);

    videobuf_queue_sg_init(&fh->vbiq, &cx23885_vbi_qops,
        &dev->pci->dev, &dev->slock,
        V4L2_BUF_TYPE_VBI_CAPTURE,
        V4L2_FIELD_SEQ_TB,
        sizeof(struct cx23885_buffer),
        fh, NULL);


    dprintk(1, "post videobuf_queue_init()\n");

    return 0;
}

static ssize_t video_read(struct file *file, char __user *data,
    size_t count, loff_t *ppos)
{
    struct cx23885_fh *fh = file->private_data;

    switch (fh->type) {
    case V4L2_BUF_TYPE_VIDEO_CAPTURE:
        if (res_locked(fh->dev, RESOURCE_VIDEO))
            return -EBUSY;
        return videobuf_read_one(&fh->vidq, data, count, ppos,
                     file->f_flags & O_NONBLOCK);
    case V4L2_BUF_TYPE_VBI_CAPTURE:
        if (!res_get(fh->dev, fh, RESOURCE_VBI))
            return -EBUSY;
        return videobuf_read_stream(&fh->vbiq, data, count, ppos, 1,
                        file->f_flags & O_NONBLOCK);
    default:
        BUG();
        return 0;
    }
}

static unsigned int video_poll(struct file *file,
    struct poll_table_struct *wait)
{
    struct cx23885_fh *fh = file->private_data;
    struct cx23885_buffer *buf;
    unsigned int rc = POLLERR;

    if (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type) {
        if (!res_get(fh->dev, fh, RESOURCE_VBI))
            return POLLERR;
        return videobuf_poll_stream(file, &fh->vbiq, wait);
    }

    mutex_lock(&fh->vidq.vb_lock);
    if (res_check(fh, RESOURCE_VIDEO)) {
        /* streaming capture */
        if (list_empty(&fh->vidq.stream))
            goto done;
        buf = list_entry(fh->vidq.stream.next,
            struct cx23885_buffer, vb.stream);
    } else {
        /* read() capture */
        buf = (struct cx23885_buffer *)fh->vidq.read_buf;
        if (NULL == buf)
            goto done;
    }
    poll_wait(file, &buf->vb.done, wait);
    if (buf->vb.state == VIDEOBUF_DONE ||
        buf->vb.state == VIDEOBUF_ERROR)
        rc =  POLLIN|POLLRDNORM;
    else
        rc = 0;
done:
    mutex_unlock(&fh->vidq.vb_lock);
    return rc;
}

static int video_release(struct file *file)
{
    struct cx23885_fh *fh = file->private_data;
    struct cx23885_dev *dev = fh->dev;

    /* turn off overlay */
    if (res_check(fh, RESOURCE_OVERLAY)) {
        /* FIXME */
        res_free(dev, fh, RESOURCE_OVERLAY);
    }

    /* stop video capture */
    if (res_check(fh, RESOURCE_VIDEO)) {
        videobuf_queue_cancel(&fh->vidq);
        res_free(dev, fh, RESOURCE_VIDEO);
    }
    if (fh->vidq.read_buf) {
        buffer_release(&fh->vidq, fh->vidq.read_buf);
        kfree(fh->vidq.read_buf);
    }

    /* stop vbi capture */
    if (res_check(fh, RESOURCE_VBI)) {
        if (fh->vbiq.streaming)
            videobuf_streamoff(&fh->vbiq);
        if (fh->vbiq.reading)
            videobuf_read_stop(&fh->vbiq);
        res_free(dev, fh, RESOURCE_VBI);
    }

    videobuf_mmap_free(&fh->vidq);
    videobuf_mmap_free(&fh->vbiq);

    file->private_data = NULL;
    kfree(fh);

    /* We are not putting the tuner to sleep here on exit, because
     * we want to use the mpeg encoder in another session to capture
     * tuner video. Closing this will result in no video to the encoder.
     */

    return 0;
}

static int video_mmap(struct file *file, struct vm_area_struct *vma)
{
    struct cx23885_fh *fh = file->private_data;

    return videobuf_mmap_mapper(get_queue(fh), vma);
}

/* ------------------------------------------------------------------ */
/* VIDEO CTRL IOCTLS                                                  */

int cx23885_get_control(struct cx23885_dev *dev,
    struct v4l2_control *ctl)
{
    dprintk(1, "%s() calling cx25840(VIDIOC_G_CTRL)\n", __func__);
    call_all(dev, core, g_ctrl, ctl);
    return 0;
}

int cx23885_set_control(struct cx23885_dev *dev,
    struct v4l2_control *ctl)
{
    dprintk(1, "%s() calling cx25840(VIDIOC_S_CTRL)\n", __func__);
    call_all(dev, core, s_ctrl, ctl);

    return 0;
}

static void init_controls(struct cx23885_dev *dev)
{
    struct v4l2_control ctrl;
    int i;

    for (i = 0; i < CX23885_CTLS; i++) {
        ctrl.id = cx23885_ctls[i].v.id;
        ctrl.value = cx23885_ctls[i].v.default_value;

        cx23885_set_control(dev, &ctrl);
    }
}

/* ------------------------------------------------------------------ */
/* VIDEO IOCTLS                                                       */

static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
    struct v4l2_format *f)
{
    struct cx23885_fh *fh   = priv;

    f->fmt.pix.width        = fh->width;
    f->fmt.pix.height       = fh->height;
    f->fmt.pix.field        = fh->vidq.field;
    f->fmt.pix.pixelformat  = fh->fmt->fourcc;
    f->fmt.pix.bytesperline =
        (f->fmt.pix.width * fh->fmt->depth) >> 3;
    f->fmt.pix.sizeimage =
        f->fmt.pix.height * f->fmt.pix.bytesperline;

    return 0;
}

static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
    struct v4l2_format *f)
{
    struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
    struct cx23885_fmt *fmt;
    enum v4l2_field   field;
    unsigned int      maxw, maxh;

    fmt = format_by_fourcc(f->fmt.pix.pixelformat);
    if (NULL == fmt)
        return -EINVAL;

    field = f->fmt.pix.field;
    maxw  = norm_maxw(dev->tvnorm);
    maxh  = norm_maxh(dev->tvnorm);

    if (V4L2_FIELD_ANY == field) {
        field = (f->fmt.pix.height > maxh/2)
            ? V4L2_FIELD_INTERLACED
            : V4L2_FIELD_BOTTOM;
    }

    switch (field) {
    case V4L2_FIELD_TOP:
    case V4L2_FIELD_BOTTOM:
        maxh = maxh / 2;
        break;
    case V4L2_FIELD_INTERLACED:
        break;
    default:
        return -EINVAL;
    }

    f->fmt.pix.field = field;
    v4l_bound_align_image(&f->fmt.pix.width, 48, maxw, 2,
                  &f->fmt.pix.height, 32, maxh, 0, 0);
    f->fmt.pix.bytesperline =
        (f->fmt.pix.width * fmt->depth) >> 3;
    f->fmt.pix.sizeimage =
        f->fmt.pix.height * f->fmt.pix.bytesperline;

    return 0;
}

static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
    struct v4l2_format *f)
{
    struct cx23885_fh *fh = priv;
    struct cx23885_dev *dev  = ((struct cx23885_fh *)priv)->dev;
    struct v4l2_mbus_framefmt mbus_fmt;
    int err;

    dprintk(2, "%s()\n", __func__);
    err = vidioc_try_fmt_vid_cap(file, priv, f);

    if (0 != err)
        return err;
    fh->fmt        = format_by_fourcc(f->fmt.pix.pixelformat);
    fh->width      = f->fmt.pix.width;
    fh->height     = f->fmt.pix.height;
    fh->vidq.field = f->fmt.pix.field;
    dprintk(2, "%s() width=%d height=%d field=%d\n", __func__,
        fh->width, fh->height, fh->vidq.field);
    v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, V4L2_MBUS_FMT_FIXED);
    call_all(dev, video, s_mbus_fmt, &mbus_fmt);
    v4l2_fill_pix_format(&f->fmt.pix, &mbus_fmt);
    return 0;
}

static int vidioc_querycap(struct file *file, void  *priv,
    struct v4l2_capability *cap)
{
    struct cx23885_dev *dev  = ((struct cx23885_fh *)priv)->dev;

    strcpy(cap->driver, "cx23885");
    strlcpy(cap->card, cx23885_boards[dev->board].name,
        sizeof(cap->card));
    sprintf(cap->bus_info, "PCIe:%s", pci_name(dev->pci));
    cap->capabilities =
        V4L2_CAP_VIDEO_CAPTURE |
        V4L2_CAP_READWRITE     |
        V4L2_CAP_STREAMING     |
        V4L2_CAP_VBI_CAPTURE;
    if (UNSET != dev->tuner_type)
        cap->capabilities |= V4L2_CAP_TUNER;
    return 0;
}

static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
    struct v4l2_fmtdesc *f)
{
    if (unlikely(f->index >= ARRAY_SIZE(formats)))
        return -EINVAL;

    strlcpy(f->description, formats[f->index].name,
        sizeof(f->description));
    f->pixelformat = formats[f->index].fourcc;

    return 0;
}

static int vidioc_reqbufs(struct file *file, void *priv,
    struct v4l2_requestbuffers *p)
{
    struct cx23885_fh *fh = priv;
    return videobuf_reqbufs(get_queue(fh), p);
}

static int vidioc_querybuf(struct file *file, void *priv,
    struct v4l2_buffer *p)
{
    struct cx23885_fh *fh = priv;
    return videobuf_querybuf(get_queue(fh), p);
}

static int vidioc_qbuf(struct file *file, void *priv,
    struct v4l2_buffer *p)
{
    struct cx23885_fh *fh = priv;
    return videobuf_qbuf(get_queue(fh), p);
}

static int vidioc_dqbuf(struct file *file, void *priv,
    struct v4l2_buffer *p)
{
    struct cx23885_fh *fh = priv;
    return videobuf_dqbuf(get_queue(fh), p,
                file->f_flags & O_NONBLOCK);
}

static int vidioc_streamon(struct file *file, void *priv,
    enum v4l2_buf_type i)
{
    struct cx23885_fh *fh = priv;
    struct cx23885_dev *dev = fh->dev;
    dprintk(1, "%s()\n", __func__);

    if ((fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
        (fh->type != V4L2_BUF_TYPE_VBI_CAPTURE))
        return -EINVAL;
    if (unlikely(i != fh->type))
        return -EINVAL;

    if (unlikely(!res_get(dev, fh, get_resource(fh))))
        return -EBUSY;

    /* Don't start VBI streaming unless vida streaming
     * has already started.
     */
    if ((fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) &&
        ((cx_read(VID_A_DMA_CTL) & 0x11) == 0))
        return -EINVAL;

    return videobuf_streamon(get_queue(fh));
}

static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
{
    struct cx23885_fh *fh = priv;
    struct cx23885_dev *dev = fh->dev;
    int err, res;
    dprintk(1, "%s()\n", __func__);

    if ((fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
        (fh->type != V4L2_BUF_TYPE_VBI_CAPTURE))
        return -EINVAL;
    if (i != fh->type)
        return -EINVAL;

    res = get_resource(fh);
    err = videobuf_streamoff(get_queue(fh));
    if (err < 0)
        return err;
    res_free(dev, fh, res);
    return 0;
}

static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
{
    struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
    dprintk(1, "%s()\n", __func__);

    call_all(dev, core, g_std, id);

    return 0;
}

static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *tvnorms)
{
    struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
    dprintk(1, "%s()\n", __func__);

    mutex_lock(&dev->lock);
    cx23885_set_tvnorm(dev, *tvnorms);
    mutex_unlock(&dev->lock);

    return 0;
}

int cx23885_enum_input(struct cx23885_dev *dev, struct v4l2_input *i)
{
    static const char *iname[] = {
        [CX23885_VMUX_COMPOSITE1] = "Composite1",
        [CX23885_VMUX_COMPOSITE2] = "Composite2",
        [CX23885_VMUX_COMPOSITE3] = "Composite3",
        [CX23885_VMUX_COMPOSITE4] = "Composite4",
        [CX23885_VMUX_SVIDEO]     = "S-Video",
        [CX23885_VMUX_COMPONENT]  = "Component",
        [CX23885_VMUX_TELEVISION] = "Television",
        [CX23885_VMUX_CABLE]      = "Cable TV",
        [CX23885_VMUX_DVB]        = "DVB",
        [CX23885_VMUX_DEBUG]      = "for debug only",
    };
    unsigned int n;
    dprintk(1, "%s()\n", __func__);

    n = i->index;
    if (n >= MAX_CX23885_INPUT)
        return -EINVAL;

    if (0 == INPUT(n)->type)
        return -EINVAL;

    i->index = n;
    i->type  = V4L2_INPUT_TYPE_CAMERA;
    strcpy(i->name, iname[INPUT(n)->type]);
    if ((CX23885_VMUX_TELEVISION == INPUT(n)->type) ||
        (CX23885_VMUX_CABLE == INPUT(n)->type)) {
        i->type = V4L2_INPUT_TYPE_TUNER;
        i->std = CX23885_NORMS;
    }

    /* Two selectable audio inputs for non-tv inputs */
    if (INPUT(n)->type != CX23885_VMUX_TELEVISION)
        i->audioset = 0x3;

    if (dev->input == n) {
        /* enum'd input matches our configured input.
         * Ask the video decoder to process the call
         * and give it an oppertunity to update the
         * status field.
         */
        call_all(dev, video, g_input_status, &i->status);
    }

    return 0;
}

static int vidioc_enum_input(struct file *file, void *priv,
                struct v4l2_input *i)
{
    struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
    dprintk(1, "%s()\n", __func__);
    return cx23885_enum_input(dev, i);
}

int cx23885_get_input(struct file *file, void *priv, unsigned int *i)
{
    struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;

    *i = dev->input;
    dprintk(1, "%s() returns %d\n", __func__, *i);
    return 0;
}

static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
{
    return cx23885_get_input(file, priv, i);
}

int cx23885_set_input(struct file *file, void *priv, unsigned int i)
{
    struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;

    dprintk(1, "%s(%d)\n", __func__, i);

    if (i >= MAX_CX23885_INPUT) {
        dprintk(1, "%s() -EINVAL\n", __func__);
        return -EINVAL;
    }

    if (INPUT(i)->type == 0)
        return -EINVAL;

    mutex_lock(&dev->lock);
    cx23885_video_mux(dev, i);

    /* By default establish the default audio input for the card also */
    /* Caller is free to use VIDIOC_S_AUDIO to override afterwards */
    cx23885_audio_mux(dev, i);
    mutex_unlock(&dev->lock);
    return 0;
}

static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
{
    return cx23885_set_input(file, priv, i);
}

static int vidioc_log_status(struct file *file, void *priv)
{
    struct cx23885_fh  *fh  = priv;
    struct cx23885_dev *dev = fh->dev;

    printk(KERN_INFO
        "%s/0: ============  START LOG STATUS  ============\n",
        dev->name);
    call_all(dev, core, log_status);
    printk(KERN_INFO
        "%s/0: =============  END LOG STATUS  =============\n",
        dev->name);
    return 0;
}

static int cx23885_query_audinput(struct file *file, void *priv,
    struct v4l2_audio *i)
{
    struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
    static const char *iname[] = {
        [0] = "Baseband L/R 1",
        [1] = "Baseband L/R 2",
    };
    unsigned int n;
    dprintk(1, "%s()\n", __func__);

    n = i->index;
    if (n >= 2)
        return -EINVAL;

    memset(i, 0, sizeof(*i));
    i->index = n;
    strcpy(i->name, iname[n]);
    i->capability  = V4L2_AUDCAP_STEREO;
    i->mode  = V4L2_AUDMODE_AVL;
    return 0;

}

static int vidioc_enum_audinput(struct file *file, void *priv,
                struct v4l2_audio *i)
{
    return cx23885_query_audinput(file, priv, i);
}

static int vidioc_g_audinput(struct file *file, void *priv,
    struct v4l2_audio *i)
{
    struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;

    i->index = dev->audinput;
    dprintk(1, "%s(input=%d)\n", __func__, i->index);

    return cx23885_query_audinput(file, priv, i);
}

static int vidioc_s_audinput(struct file *file, void *priv,
    const struct v4l2_audio *i)
{
    struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
    if (i->index >= 2)
        return -EINVAL;

    dprintk(1, "%s(%d)\n", __func__, i->index);

    dev->audinput = i->index;

    /* Skip the audio defaults from the cards struct, caller wants
     * directly touch the audio mux hardware. */
    cx23885_flatiron_mux(dev, dev->audinput + 1);
    return 0;
}

static int vidioc_queryctrl(struct file *file, void *priv,
                struct v4l2_queryctrl *qctrl)
{
    qctrl->id = v4l2_ctrl_next(ctrl_classes, qctrl->id);
    if (unlikely(qctrl->id == 0))
        return -EINVAL;
    return cx23885_ctrl_query(qctrl);
}

static int vidioc_g_ctrl(struct file *file, void *priv,
                struct v4l2_control *ctl)
{
    struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;

    return cx23885_get_control(dev, ctl);
}

static int vidioc_s_ctrl(struct file *file, void *priv,
                struct v4l2_control *ctl)
{
    struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;

    return cx23885_set_control(dev, ctl);
}

static int vidioc_g_tuner(struct file *file, void *priv,
                struct v4l2_tuner *t)
{
    struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;

    if (unlikely(UNSET == dev->tuner_type))
        return -EINVAL;
    if (0 != t->index)
        return -EINVAL;

    strcpy(t->name, "Television");

    call_all(dev, tuner, g_tuner, t);
    return 0;
}

static int vidioc_s_tuner(struct file *file, void *priv,
                struct v4l2_tuner *t)
{
    struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;

    if (UNSET == dev->tuner_type)
        return -EINVAL;
    if (0 != t->index)
        return -EINVAL;
    /* Update the A/V core */
    call_all(dev, tuner, s_tuner, t);

    return 0;
}

static int vidioc_g_frequency(struct file *file, void *priv,
                struct v4l2_frequency *f)
{
    struct cx23885_fh *fh = priv;
    struct cx23885_dev *dev = fh->dev;

    if (unlikely(UNSET == dev->tuner_type))
        return -EINVAL;

    /* f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; */
    f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
    f->frequency = dev->freq;

    call_all(dev, tuner, g_frequency, f);

    return 0;
}

static int cx23885_set_freq(struct cx23885_dev *dev, struct v4l2_frequency *f)
{
    struct v4l2_control ctrl;

    if (unlikely(UNSET == dev->tuner_type))
        return -EINVAL;
    if (unlikely(f->tuner != 0))
        return -EINVAL;

    mutex_lock(&dev->lock);
    dev->freq = f->frequency;

    /* I need to mute audio here */
    ctrl.id = V4L2_CID_AUDIO_MUTE;
    ctrl.value = 1;
    cx23885_set_control(dev, &ctrl);

    call_all(dev, tuner, s_frequency, f);

    /* When changing channels it is required to reset TVAUDIO */
    msleep(100);

    /* I need to unmute audio here */
    ctrl.value = 0;
    cx23885_set_control(dev, &ctrl);

    mutex_unlock(&dev->lock);

    return 0;
}

static int cx23885_set_freq_via_ops(struct cx23885_dev *dev,
    struct v4l2_frequency *f)
{
    struct v4l2_control ctrl;
    struct videobuf_dvb_frontend *vfe;
    struct dvb_frontend *fe;

    struct analog_parameters params = {
        .mode      = V4L2_TUNER_ANALOG_TV,
        .audmode   = V4L2_TUNER_MODE_STEREO,
        .std       = dev->tvnorm,
        .frequency = f->frequency
    };

    mutex_lock(&dev->lock);
    dev->freq = f->frequency;

    /* I need to mute audio here */
    ctrl.id = V4L2_CID_AUDIO_MUTE;
    ctrl.value = 1;
    cx23885_set_control(dev, &ctrl);

    /* If HVR1850 */
    dprintk(1, "%s() frequency=%d tuner=%d std=0x%llx\n", __func__,
        params.frequency, f->tuner, params.std);

    vfe = videobuf_dvb_get_frontend(&dev->ts2.frontends, 1);
    if (!vfe) {
        mutex_unlock(&dev->lock);
        return -EINVAL;
    }

    fe = vfe->dvb.frontend;

    if ((dev->board == CX23885_BOARD_HAUPPAUGE_HVR1850) ||
        (dev->board == CX23885_BOARD_HAUPPAUGE_HVR1255) ||
        (dev->board == CX23885_BOARD_HAUPPAUGE_HVR1255_22111))
        fe = &dev->ts1.analog_fe;

    if (fe && fe->ops.tuner_ops.set_analog_params) {
        call_all(dev, core, s_std, dev->tvnorm);
        fe->ops.tuner_ops.set_analog_params(fe, &params);
    }
    else
        printk(KERN_ERR "%s() No analog tuner, aborting\n", __func__);

    /* When changing channels it is required to reset TVAUDIO */
    msleep(100);

    /* I need to unmute audio here */
    ctrl.value = 0;
    cx23885_set_control(dev, &ctrl);

    mutex_unlock(&dev->lock);

    return 0;
}

int cx23885_set_frequency(struct file *file, void *priv,
    struct v4l2_frequency *f)
{
    struct cx23885_fh *fh = priv;
    struct cx23885_dev *dev = fh->dev;
    int ret;

    switch (dev->board) {
    case CX23885_BOARD_HAUPPAUGE_HVR1255:
    case CX23885_BOARD_HAUPPAUGE_HVR1255_22111:
    case CX23885_BOARD_HAUPPAUGE_HVR1850:
        ret = cx23885_set_freq_via_ops(dev, f);
        break;
    default:
        ret = cx23885_set_freq(dev, f);
    }

    return ret;
}

static int vidioc_s_frequency(struct file *file, void *priv,
    struct v4l2_frequency *f)
{
    return cx23885_set_frequency(file, priv, f);
}

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

static void cx23885_vid_timeout(unsigned long data)
{
    struct cx23885_dev *dev = (struct cx23885_dev *)data;
    struct cx23885_dmaqueue *q = &dev->vidq;
    struct cx23885_buffer *buf;
    unsigned long flags;

    spin_lock_irqsave(&dev->slock, flags);
    while (!list_empty(&q->active)) {
        buf = list_entry(q->active.next,
            struct cx23885_buffer, vb.queue);
        list_del(&buf->vb.queue);
        buf->vb.state = VIDEOBUF_ERROR;
        wake_up(&buf->vb.done);
        printk(KERN_ERR "%s: [%p/%d] timeout - dma=0x%08lx\n",
            dev->name, buf, buf->vb.i,
            (unsigned long)buf->risc.dma);
    }
    cx23885_restart_video_queue(dev, q);
    spin_unlock_irqrestore(&dev->slock, flags);
}

int cx23885_video_irq(struct cx23885_dev *dev, u32 status)
{
    u32 mask, count;
    int handled = 0;

    mask   = cx_read(VID_A_INT_MSK);
    if (0 == (status & mask))
        return handled;

    cx_write(VID_A_INT_STAT, status);

    /* risc op code error, fifo overflow or line sync detection error */
    if ((status & VID_BC_MSK_OPC_ERR) ||
        (status & VID_BC_MSK_SYNC) ||
        (status & VID_BC_MSK_OF)) {

        if (status & VID_BC_MSK_OPC_ERR) {
            dprintk(7, " (VID_BC_MSK_OPC_ERR 0x%08x)\n",
                VID_BC_MSK_OPC_ERR);
            printk(KERN_WARNING "%s: video risc op code error\n",
                dev->name);
            cx23885_sram_channel_dump(dev,
                &dev->sram_channels[SRAM_CH01]);
        }

        if (status & VID_BC_MSK_SYNC)
            dprintk(7, " (VID_BC_MSK_SYNC 0x%08x) "
                "video lines miss-match\n",
                VID_BC_MSK_SYNC);

        if (status & VID_BC_MSK_OF)
            dprintk(7, " (VID_BC_MSK_OF 0x%08x) fifo overflow\n",
                VID_BC_MSK_OF);

    }

    /* Video */
    if (status & VID_BC_MSK_RISCI1) {
        spin_lock(&dev->slock);
        count = cx_read(VID_A_GPCNT);
        cx23885_video_wakeup(dev, &dev->vidq, count);
        spin_unlock(&dev->slock);
        handled++;
    }
    if (status & VID_BC_MSK_RISCI2) {
        dprintk(2, "stopper video\n");
        spin_lock(&dev->slock);
        cx23885_restart_video_queue(dev, &dev->vidq);
        spin_unlock(&dev->slock);
        handled++;
    }

    /* Allow the VBI framework to process it's payload */
    handled += cx23885_vbi_irq(dev, status);

    return handled;
}

/* ----------------------------------------------------------- */
/* exported stuff                                              */

static const struct v4l2_file_operations video_fops = {
    .owner         = THIS_MODULE,
    .open          = video_open,
    .release       = video_release,
    .read          = video_read,
    .poll          = video_poll,
    .mmap          = video_mmap,
    .ioctl         = video_ioctl2,
};

static const struct v4l2_ioctl_ops video_ioctl_ops = {
    .vidioc_querycap      = vidioc_querycap,
    .vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
    .vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
    .vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
    .vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
    .vidioc_g_fmt_vbi_cap     = cx23885_vbi_fmt,
    .vidioc_try_fmt_vbi_cap   = cx23885_vbi_fmt,
    .vidioc_s_fmt_vbi_cap     = cx23885_vbi_fmt,
    .vidioc_reqbufs       = vidioc_reqbufs,
    .vidioc_querybuf      = vidioc_querybuf,
    .vidioc_qbuf          = vidioc_qbuf,
    .vidioc_dqbuf         = vidioc_dqbuf,
    .vidioc_s_std         = vidioc_s_std,
    .vidioc_g_std         = vidioc_g_std,
    .vidioc_querystd      = vidioc_g_std,
    .vidioc_enum_input    = vidioc_enum_input,
    .vidioc_g_input       = vidioc_g_input,
    .vidioc_s_input       = vidioc_s_input,
    .vidioc_log_status    = vidioc_log_status,
    .vidioc_queryctrl     = vidioc_queryctrl,
    .vidioc_g_ctrl        = vidioc_g_ctrl,
    .vidioc_s_ctrl        = vidioc_s_ctrl,
    .vidioc_streamon      = vidioc_streamon,
    .vidioc_streamoff     = vidioc_streamoff,
    .vidioc_g_tuner       = vidioc_g_tuner,
    .vidioc_s_tuner       = vidioc_s_tuner,
    .vidioc_g_frequency   = vidioc_g_frequency,
    .vidioc_s_frequency   = vidioc_s_frequency,
    .vidioc_g_chip_ident  = cx23885_g_chip_ident,
#ifdef CONFIG_VIDEO_ADV_DEBUG
    .vidioc_g_register    = cx23885_g_register,
    .vidioc_s_register    = cx23885_s_register,
#endif
    .vidioc_enumaudio     = vidioc_enum_audinput,
    .vidioc_g_audio       = vidioc_g_audinput,
    .vidioc_s_audio       = vidioc_s_audinput,
};

static struct video_device cx23885_vbi_template;
static struct video_device cx23885_video_template = {
    .name                 = "cx23885-video",
    .fops                 = &video_fops,
    .ioctl_ops        = &video_ioctl_ops,
    .tvnorms              = CX23885_NORMS,
    .current_norm         = V4L2_STD_NTSC_M,
};

static const struct v4l2_file_operations radio_fops = {
    .owner         = THIS_MODULE,
    .open          = video_open,
    .release       = video_release,
    .ioctl         = video_ioctl2,
};


void cx23885_video_unregister(struct cx23885_dev *dev)
{
    dprintk(1, "%s()\n", __func__);
    cx23885_irq_remove(dev, 0x01);

    if (dev->vbi_dev) {
        if (video_is_registered(dev->vbi_dev))
            video_unregister_device(dev->vbi_dev);
        else
            video_device_release(dev->vbi_dev);
        dev->vbi_dev = NULL;
        btcx_riscmem_free(dev->pci, &dev->vbiq.stopper);
    }
    if (dev->video_dev) {
        if (video_is_registered(dev->video_dev))
            video_unregister_device(dev->video_dev);
        else
            video_device_release(dev->video_dev);
        dev->video_dev = NULL;

        btcx_riscmem_free(dev->pci, &dev->vidq.stopper);
    }

    if (dev->audio_dev)
        cx23885_audio_unregister(dev);
}

int cx23885_video_register(struct cx23885_dev *dev)
{
    int err;

    dprintk(1, "%s()\n", __func__);
    spin_lock_init(&dev->slock);

    /* Initialize VBI template */
    memcpy(&cx23885_vbi_template, &cx23885_video_template,
        sizeof(cx23885_vbi_template));
    strcpy(cx23885_vbi_template.name, "cx23885-vbi");

    dev->tvnorm = cx23885_video_template.current_norm;

    /* init video dma queues */
    INIT_LIST_HEAD(&dev->vidq.active);
    INIT_LIST_HEAD(&dev->vidq.queued);
    dev->vidq.timeout.function = cx23885_vid_timeout;
    dev->vidq.timeout.data = (unsigned long)dev;
    init_timer(&dev->vidq.timeout);
    cx23885_risc_stopper(dev->pci, &dev->vidq.stopper,
        VID_A_DMA_CTL, 0x11, 0x00);

    /* init vbi dma queues */
    INIT_LIST_HEAD(&dev->vbiq.active);
    INIT_LIST_HEAD(&dev->vbiq.queued);
    dev->vbiq.timeout.function = cx23885_vbi_timeout;
    dev->vbiq.timeout.data = (unsigned long)dev;
    init_timer(&dev->vbiq.timeout);
    cx23885_risc_stopper(dev->pci, &dev->vbiq.stopper,
        VID_A_DMA_CTL, 0x22, 0x00);

    cx23885_irq_add_enable(dev, 0x01);

    if ((TUNER_ABSENT != dev->tuner_type) &&
            ((dev->tuner_bus == 0) || (dev->tuner_bus == 1))) {
        struct v4l2_subdev *sd = NULL;

        if (dev->tuner_addr)
            sd = v4l2_i2c_new_subdev(&dev->v4l2_dev,
                &dev->i2c_bus[dev->tuner_bus].i2c_adap,
                "tuner", dev->tuner_addr, NULL);
        else
            sd = v4l2_i2c_new_subdev(&dev->v4l2_dev,
                &dev->i2c_bus[dev->tuner_bus].i2c_adap,
                "tuner", 0, v4l2_i2c_tuner_addrs(ADDRS_TV));
        if (sd) {
            struct tuner_setup tun_setup;

            memset(&tun_setup, 0, sizeof(tun_setup));
            tun_setup.mode_mask = T_ANALOG_TV;
            tun_setup.type = dev->tuner_type;
            tun_setup.addr = v4l2_i2c_subdev_addr(sd);
            tun_setup.tuner_callback = cx23885_tuner_callback;

            v4l2_subdev_call(sd, tuner, s_type_addr, &tun_setup);

            if (dev->board == CX23885_BOARD_LEADTEK_WINFAST_PXTV1200) {
                struct xc2028_ctrl ctrl = {
                    .fname = XC2028_DEFAULT_FIRMWARE,
                    .max_len = 64
                };
                struct v4l2_priv_tun_config cfg = {
                    .tuner = dev->tuner_type,
                    .priv = &ctrl
                };
                v4l2_subdev_call(sd, tuner, s_config, &cfg);
            }
        }
    }

    /* register Video device */
    dev->video_dev = cx23885_vdev_init(dev, dev->pci,
        &cx23885_video_template, "video");
    err = video_register_device(dev->video_dev, VFL_TYPE_GRABBER,
                    video_nr[dev->nr]);
    if (err < 0) {
        printk(KERN_INFO "%s: can't register video device\n",
            dev->name);
        goto fail_unreg;
    }
    printk(KERN_INFO "%s: registered device %s [v4l2]\n",
           dev->name, video_device_node_name(dev->video_dev));

    /* register VBI device */
    dev->vbi_dev = cx23885_vdev_init(dev, dev->pci,
        &cx23885_vbi_template, "vbi");
    err = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
                    vbi_nr[dev->nr]);
    if (err < 0) {
        printk(KERN_INFO "%s: can't register vbi device\n",
            dev->name);
        goto fail_unreg;
    }
    printk(KERN_INFO "%s: registered device %s\n",
           dev->name, video_device_node_name(dev->vbi_dev));

    /* Register ALSA audio device */
    dev->audio_dev = cx23885_audio_register(dev);

    /* initial device configuration */
    mutex_lock(&dev->lock);
    cx23885_set_tvnorm(dev, dev->tvnorm);
    init_controls(dev);
    cx23885_video_mux(dev, 0);
    cx23885_audio_mux(dev, 0);
    mutex_unlock(&dev->lock);

    return 0;

fail_unreg:
    cx23885_video_unregister(dev);
    return err;
}