V4L/DVB (6119): ivtvfb: renamed ivtv-fb to ivtvfb, move header to include/linux

The convention for framebuffer devices is to call them xxxfb, not xxx-fb.
Conform to this. Also move the ivtvfb.h header to include/linux: it is a
public header. The FBIO_WAITFORVSYNC ioctl is now also defined in the
ivtvfb.h header, no more need to include matroxfb.h for just this ioctl.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 1190 insertions, 0 deletions

diff --git a/drivers/media/video/ivtv/ivtvfb.c b/drivers/media/video/ivtv/ivtvfb.c
new file mode 100644
index 000000000000..ff721c088479
--- /dev/null
+++ b/drivers/media/video/ivtv/ivtvfb.c
@@ -0,0 +1,1190 @@
+/*
+    On Screen Display cx23415 Framebuffer driver
+
+    This module presents the cx23415 OSD (onscreen display) framebuffer memory
+    as a standard Linux /dev/fb style framebuffer device. The framebuffer has
+    support for 8, 16 & 32 bpp packed pixel formats with alpha channel. In 16bpp
+    mode, there is a choice of a three color depths (12, 15 or 16 bits), but no
+    local alpha. The colorspace is selectable between rgb & yuv.
+    Depending on the TV standard configured in the ivtv module at load time,
+    the initial resolution is either 640x400 (NTSC) or 640x480 (PAL) at 8bpp.
+    Video timings are locked to ensure a vertical refresh rate of 50Hz (PAL)
+    or 59.94 (NTSC)
+
+    Copyright (c) 2003 Matt T. Yourst <yourst@yourst.com>
+
+    Derived from drivers/video/vesafb.c
+    Portions (c) 1998 Gerd Knorr <kraxel@goldbach.in-berlin.de>
+
+    2.6 kernel port:
+    Copyright (C) 2004 Matthias Badaire
+
+    Copyright (C) 2004  Chris Kennedy <c@groovy.org>
+
+    Copyright (C) 2006  Ian Armstrong <ian@iarmst.demon.co.uk>
+
+    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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/fb.h>
+#include <linux/ivtvfb.h>
+
+#ifdef CONFIG_MTRR
+#include <asm/mtrr.h>
+#endif
+
+#include "ivtv-driver.h"
+#include "ivtv-udma.h"
+#include "ivtv-mailbox.h"
+
+/* card parameters */
+static int ivtv_fb_card_id = -1;
+static int ivtv_fb_debug = 0;
+static int osd_laced;
+static int osd_compat;
+static int osd_depth;
+static int osd_upper;
+static int osd_left;
+static int osd_yres;
+static int osd_xres;
+
+module_param(ivtv_fb_card_id, int, 0444);
+module_param_named(debug,ivtv_fb_debug, int, 0644);
+module_param(osd_laced, bool, 0444);
+module_param(osd_compat, bool, 0444);
+module_param(osd_depth, int, 0444);
+module_param(osd_upper, int, 0444);
+module_param(osd_left, int, 0444);
+module_param(osd_yres, int, 0444);
+module_param(osd_xres, int, 0444);
+
+MODULE_PARM_DESC(ivtv_fb_card_id,
+                 "Only use framebuffer of the specified ivtv card (0-31)\n"
+                 "\t\t\tdefault -1: initialize all available framebuffers");
+
+MODULE_PARM_DESC(debug,
+                 "Debug level (bitmask). Default: errors only\n"
+                 "\t\t\t(debug = 3 gives full debugging)");
+
+MODULE_PARM_DESC(osd_compat,
+                 "Compatibility mode - Display size is locked (use for old X drivers)\n"
+                 "\t\t\t0=off\n"
+                 "\t\t\t1=on\n"
+                 "\t\t\tdefault off");
+
+/* Why upper, left, xres, yres, depth, laced ? To match terminology used
+   by fbset.
+   Why start at 1 for left & upper coordinate ? Because X doesn't allow 0 */
+
+MODULE_PARM_DESC(osd_laced,
+                 "Interlaced mode\n"
+                 "\t\t\t0=off\n"
+                 "\t\t\t1=on\n"
+                 "\t\t\tdefault off");
+
+MODULE_PARM_DESC(osd_depth,
+                 "Bits per pixel - 8, 16, 32\n"
+                 "\t\t\tdefault 8");
+
+MODULE_PARM_DESC(osd_upper,
+                 "Vertical start position\n"
+                 "\t\t\tdefault 0 (Centered)");
+
+MODULE_PARM_DESC(osd_left,
+                 "Horizontal start position\n"
+                 "\t\t\tdefault 0 (Centered)");
+
+MODULE_PARM_DESC(osd_yres,
+                 "Display height\n"
+                 "\t\t\tdefault 480 (PAL)\n"
+                 "\t\t\t        400 (NTSC)");
+
+MODULE_PARM_DESC(osd_xres,
+                 "Display width\n"
+                 "\t\t\tdefault 640");
+
+MODULE_AUTHOR("Kevin Thayer, Chris Kennedy, Hans Verkuil, John Harvey, Ian Armstrong");
+MODULE_LICENSE("GPL");
+
+/* --------------------------------------------------------------------- */
+
+#define IVTV_FB_DBGFLG_WARN  (1 << 0)
+#define IVTV_FB_DBGFLG_INFO  (1 << 1)
+
+#define IVTV_FB_DEBUG(x, type, fmt, args...) \
+        do { \
+                if ((x) & ivtv_fb_debug) \
+                        printk(KERN_INFO "ivtv-fb%d " type ": " fmt, itv->num , ## args); \
+        } while (0)
+#define IVTV_FB_DEBUG_WARN(fmt, args...)  IVTV_FB_DEBUG(IVTV_FB_DBGFLG_WARN, "warning", fmt , ## args)
+#define IVTV_FB_DEBUG_INFO(fmt, args...)  IVTV_FB_DEBUG(IVTV_FB_DBGFLG_INFO, "info", fmt , ## args)
+
+/* Standard kernel messages */
+#define IVTV_FB_ERR(fmt, args...)   printk(KERN_ERR  "ivtv-fb%d: " fmt, itv->num , ## args)
+#define IVTV_FB_WARN(fmt, args...)  printk(KERN_WARNING  "ivtv-fb%d: " fmt, itv->num , ## args)
+#define IVTV_FB_INFO(fmt, args...)  printk(KERN_INFO "ivtv-fb%d: " fmt, itv->num , ## args)
+
+/* --------------------------------------------------------------------- */
+
+#define IVTV_OSD_MAX_WIDTH  720
+#define IVTV_OSD_MAX_HEIGHT 576
+
+#define IVTV_OSD_BPP_8      0x00
+#define IVTV_OSD_BPP_16_444 0x03
+#define IVTV_OSD_BPP_16_555 0x02
+#define IVTV_OSD_BPP_16_565 0x01
+#define IVTV_OSD_BPP_32     0x04
+
+struct osd_info {
+        /* Physical base address */
+        unsigned long video_pbase;
+        /* Relative base address (relative to start of decoder memory) */
+        u32 video_rbase;
+        /* Mapped base address */
+        volatile char __iomem *video_vbase;
+        /* Buffer size */
+        u32 video_buffer_size;
+
+#ifdef CONFIG_MTRR
+        /* video_base rounded down as required by hardware MTRRs */
+        unsigned long fb_start_aligned_physaddr;
+        /* video_base rounded up as required by hardware MTRRs */
+        unsigned long fb_end_aligned_physaddr;
+#endif
+
+        /* Current osd mode */
+        int osd_mode;
+
+        /* Store the buffer offset */
+        int set_osd_coords_x;
+        int set_osd_coords_y;
+
+        /* Current dimensions (NOT VISIBLE SIZE!) */
+        int display_width;
+        int display_height;
+        int display_byte_stride;
+
+        /* Current bits per pixel */
+        int bits_per_pixel;
+        int bytes_per_pixel;
+
+        /* Frame buffer stuff */
+        struct fb_info ivtvfb_info;
+        struct fb_var_screeninfo ivtvfb_defined;
+        struct fb_fix_screeninfo ivtvfb_fix;
+};
+
+struct ivtv_osd_coords {
+        unsigned long offset;
+        unsigned long max_offset;
+        int pixel_stride;
+        int lines;
+        int x;
+        int y;
+};
+
+/* --------------------------------------------------------------------- */
+
+/* ivtv API calls for framebuffer related support */
+
+static int ivtv_fb_get_framebuffer(struct ivtv *itv, u32 *fbbase,
+                                       u32 *fblength)
+{
+        u32 data[CX2341X_MBOX_MAX_DATA];
+        int rc;
+
+        rc = ivtv_vapi_result(itv, data, CX2341X_OSD_GET_FRAMEBUFFER, 0);
+        *fbbase = data[0];
+        *fblength = data[1];
+        return rc;
+}
+
+static int ivtv_fb_get_osd_coords(struct ivtv *itv,
+                                      struct ivtv_osd_coords *osd)
+{
+        struct osd_info *oi = itv->osd_info;
+        u32 data[CX2341X_MBOX_MAX_DATA];
+
+        ivtv_vapi_result(itv, data, CX2341X_OSD_GET_OSD_COORDS, 0);
+
+        osd->offset = data[0] - oi->video_rbase;
+        osd->max_offset = oi->display_width * oi->display_height * 4;
+        osd->pixel_stride = data[1];
+        osd->lines = data[2];
+        osd->x = data[3];
+        osd->y = data[4];
+        return 0;
+}
+
+static int ivtv_fb_set_osd_coords(struct ivtv *itv, const struct ivtv_osd_coords *osd)
+{
+        struct osd_info *oi = itv->osd_info;
+
+        oi->display_width = osd->pixel_stride;
+        oi->display_byte_stride = osd->pixel_stride * oi->bytes_per_pixel;
+        oi->set_osd_coords_x += osd->x;
+        oi->set_osd_coords_y = osd->y;
+
+        return ivtv_vapi(itv, CX2341X_OSD_SET_OSD_COORDS, 5,
+                        osd->offset + oi->video_rbase,
+                        osd->pixel_stride,
+                        osd->lines, osd->x, osd->y);
+}
+
+static int ivtv_fb_set_display_window(struct ivtv *itv, struct v4l2_rect *ivtv_window)
+{
+        int osd_height_limit = itv->is_50hz ? 576 : 480;
+
+        /* Only fail if resolution too high, otherwise fudge the start coords. */
+        if ((ivtv_window->height > osd_height_limit) || (ivtv_window->width > IVTV_OSD_MAX_WIDTH))
+                return -EINVAL;
+
+        /* Ensure we don't exceed display limits */
+        if (ivtv_window->top + ivtv_window->height > osd_height_limit) {
+                IVTV_FB_DEBUG_WARN("ivtv_ioctl_fb_set_display_window - Invalid height setting (%d, %d)\n",
+                        ivtv_window->top, ivtv_window->height);
+                ivtv_window->top = osd_height_limit - ivtv_window->height;
+        }
+
+        if (ivtv_window->left + ivtv_window->width > IVTV_OSD_MAX_WIDTH) {
+                IVTV_FB_DEBUG_WARN("ivtv_ioctl_fb_set_display_window - Invalid width setting (%d, %d)\n",
+                        ivtv_window->left, ivtv_window->width);
+                ivtv_window->left = IVTV_OSD_MAX_WIDTH - ivtv_window->width;
+        }
+
+        /* Set the OSD origin */
+        write_reg((ivtv_window->top << 16) | ivtv_window->left, 0x02a04);
+
+        /* How much to display */
+        write_reg(((ivtv_window->top+ivtv_window->height) << 16) | (ivtv_window->left+ivtv_window->width), 0x02a08);
+
+        /* Pass this info back the yuv handler */
+        itv->yuv_info.osd_vis_w = ivtv_window->width;
+        itv->yuv_info.osd_vis_h = ivtv_window->height;
+        itv->yuv_info.osd_x_offset = ivtv_window->left;
+        itv->yuv_info.osd_y_offset = ivtv_window->top;
+
+        return 0;
+}
+
+static int ivtv_fb_prep_dec_dma_to_device(struct ivtv *itv,
+                                  unsigned long ivtv_dest_addr, void __user *userbuf,
+                                  int size_in_bytes)
+{
+        DEFINE_WAIT(wait);
+        int ret = 0;
+        int got_sig = 0;
+
+        mutex_lock(&itv->udma.lock);
+        /* Map User DMA */
+        if (ivtv_udma_setup(itv, ivtv_dest_addr, userbuf, size_in_bytes) <= 0) {
+                mutex_unlock(&itv->udma.lock);
+                IVTV_FB_WARN("ivtvfb_prep_dec_dma_to_device, "
+                               "Error with get_user_pages: %d bytes, %d pages returned\n",
+                               size_in_bytes, itv->udma.page_count);
+
+                /* get_user_pages must have failed completely */
+                return -EIO;
+        }
+
+        IVTV_FB_DEBUG_INFO("ivtvfb_prep_dec_dma_to_device, %d bytes, %d pages\n",
+                       size_in_bytes, itv->udma.page_count);
+
+        ivtv_udma_prepare(itv);
+        prepare_to_wait(&itv->dma_waitq, &wait, TASK_INTERRUPTIBLE);
+        /* if no UDMA is pending and no UDMA is in progress, then the DMA
+           is finished */
+        while (itv->i_flags & (IVTV_F_I_UDMA_PENDING | IVTV_F_I_UDMA)) {
+                /* don't interrupt if the DMA is in progress but break off
+                   a still pending DMA. */
+                got_sig = signal_pending(current);
+                if (got_sig && test_and_clear_bit(IVTV_F_I_UDMA_PENDING, &itv->i_flags))
+                        break;
+                got_sig = 0;
+                schedule();
+        }
+        finish_wait(&itv->dma_waitq, &wait);
+
+        /* Unmap Last DMA Xfer */
+        ivtv_udma_unmap(itv);
+        mutex_unlock(&itv->udma.lock);
+        if (got_sig) {
+                IVTV_DEBUG_INFO("User stopped OSD\n");
+                return -EINTR;
+        }
+
+        return ret;
+}
+
+static int ivtv_fb_prep_frame(struct ivtv *itv, int cmd, void __user *source,
+                              unsigned long dest_offset, int count)
+{
+        DEFINE_WAIT(wait);
+        struct osd_info *oi = itv->osd_info;
+
+        /* Nothing to do */
+        if (count == 0) {
+                IVTV_FB_DEBUG_WARN("ivtv_fb_prep_frame: Nothing to do. count = 0\n");
+                return -EINVAL;
+        }
+
+        /* Check Total FB Size */
+        if ((dest_offset + count) > oi->video_buffer_size) {
+                IVTV_FB_WARN("ivtv_fb_prep_frame: Overflowing the framebuffer %ld, only %d available\n",
+                        dest_offset + count, oi->video_buffer_size);
+                return -E2BIG;
+        }
+
+        /* Not fatal, but will have undesirable results */
+        if ((unsigned long)source & 3)
+                IVTV_FB_WARN("ivtv_fb_prep_frame: Source address not 32 bit aligned (0x%08lx)\n",
+                        (unsigned long)source);
+
+        if (dest_offset & 3)
+                IVTV_FB_WARN("ivtv_fb_prep_frame: Dest offset not 32 bit aligned (%ld)\n", dest_offset);
+
+        if (count & 3)
+                IVTV_FB_WARN("ivtv_fb_prep_frame: Count not a multiple of 4 (%d)\n", count);
+
+        /* Check Source */
+        if (!access_ok(VERIFY_READ, source + dest_offset, count)) {
+                IVTV_FB_WARN("Invalid userspace pointer 0x%08lx\n",
+                        (unsigned long)source);
+
+                IVTV_FB_DEBUG_WARN("access_ok() failed for offset 0x%08lx source 0x%08lx count %d\n",
+                        dest_offset, (unsigned long)source,
+                        count);
+                return -EINVAL;
+        }
+
+        /* OSD Address to send DMA to */
+        dest_offset += IVTV_DECODER_OFFSET + oi->video_rbase;
+
+        /* Fill Buffers */
+        return ivtv_fb_prep_dec_dma_to_device(itv, dest_offset, source, count);
+}
+
+static int ivtvfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
+{
+        DEFINE_WAIT(wait);
+        struct ivtv *itv = (struct ivtv *)info->par;
+        int rc = 0;
+
+        switch (cmd) {
+                case FBIOGET_VBLANK: {
+                        struct fb_vblank vblank;
+                        u32 trace;
+
+                        vblank.flags = FB_VBLANK_HAVE_COUNT |FB_VBLANK_HAVE_VCOUNT |
+                                        FB_VBLANK_HAVE_VSYNC;
+                        trace = read_reg(0x028c0) >> 16;
+                        if (itv->is_50hz && trace > 312) trace -= 312;
+                        else if (itv->is_60hz && trace > 262) trace -= 262;
+                        if (trace == 1) vblank.flags |= FB_VBLANK_VSYNCING;
+                        vblank.count = itv->last_vsync_field;
+                        vblank.vcount = trace;
+                        vblank.hcount = 0;
+                        if (copy_to_user((void __user *)arg, &vblank, sizeof(vblank)))
+                                return -EFAULT;
+                        return 0;
+                }
+
+                case FBIO_WAITFORVSYNC:
+                        prepare_to_wait(&itv->vsync_waitq, &wait, TASK_INTERRUPTIBLE);
+                        if (!schedule_timeout(msecs_to_jiffies(50))) rc = -ETIMEDOUT;
+                        finish_wait(&itv->vsync_waitq, &wait);
+                        return rc;
+
+                case IVTVFB_IOC_DMA_FRAME: {
+                        struct ivtvfb_dma_frame args;
+
+                        IVTV_FB_DEBUG_INFO("IVTVFB_IOC_DMA_FRAME\n");
+                        if (copy_from_user(&args, (void __user *)arg, sizeof(args)))
+                                return -EFAULT;
+
+                        return ivtv_fb_prep_frame(itv, cmd, args.source, args.dest_offset, args.count);
+                }
+
+                default:
+                        IVTV_FB_DEBUG_INFO("Unknown ioctl %08x\n", cmd);
+                        return -EINVAL;
+        }
+        return 0;
+}
+
+/* Framebuffer device handling */
+
+static int ivtvfb_set_var(struct ivtv *itv, struct fb_var_screeninfo *var)
+{
+        struct osd_info *oi = itv->osd_info;
+        struct ivtv_osd_coords ivtv_osd;
+        struct v4l2_rect ivtv_window;
+        int osd_mode = -1;
+
+        IVTV_FB_DEBUG_INFO("ivtvfb_set_var\n");
+
+        /* Select color space */
+        if (var->nonstd) /* YUV */
+                write_reg(read_reg(0x02a00) | 0x0002000, 0x02a00);
+        else /* RGB  */
+                write_reg(read_reg(0x02a00) & ~0x0002000, 0x02a00);
+
+        /* Set the color mode */
+        switch (var->bits_per_pixel) {
+                case 8:
+                        osd_mode = IVTV_OSD_BPP_8;
+                        break;
+                case 32:
+                        osd_mode = IVTV_OSD_BPP_32;
+                        break;
+                case 16:
+                        switch (var->green.length) {
+                        case 4:
+                                osd_mode = IVTV_OSD_BPP_16_444;
+                                break;
+                        case 5:
+                                osd_mode = IVTV_OSD_BPP_16_555;
+                                break;
+                        case 6:
+                                osd_mode = IVTV_OSD_BPP_16_565;
+                                break;
+                        default:
+                                IVTV_FB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n");
+                        }
+                        break;
+                default:
+                        IVTV_FB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n");
+        }
+
+        /* Change osd mode if needed.
+           Although rare, things can go wrong. The extra mode
+           change seems to help... */
+        if (osd_mode != -1 && osd_mode != oi->osd_mode) {
+                ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, 0);
+                ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, osd_mode);
+                oi->osd_mode = osd_mode;
+        }
+
+        oi->bits_per_pixel = var->bits_per_pixel;
+        oi->bytes_per_pixel = var->bits_per_pixel / 8;
+
+        /* Set the flicker filter */
+        switch (var->vmode & FB_VMODE_MASK) {
+                case FB_VMODE_NONINTERLACED: /* Filter on */
+                        ivtv_vapi(itv, CX2341X_OSD_SET_FLICKER_STATE, 1, 1);
+                        break;
+                case FB_VMODE_INTERLACED: /* Filter off */
+                        ivtv_vapi(itv, CX2341X_OSD_SET_FLICKER_STATE, 1, 0);
+                        break;
+                default:
+                        IVTV_FB_DEBUG_WARN("ivtvfb_set_var - Invalid video mode\n");
+        }
+
+        /* Read the current osd info */
+        ivtv_fb_get_osd_coords(itv, &ivtv_osd);
+
+        /* Now set the OSD to the size we want */
+        ivtv_osd.pixel_stride = var->xres_virtual;
+        ivtv_osd.lines = var->yres_virtual;
+        ivtv_osd.x = 0;
+        ivtv_osd.y = 0;
+        ivtv_fb_set_osd_coords(itv, &ivtv_osd);
+
+        /* Can't seem to find the right API combo for this.
+           Use another function which does what we need through direct register access. */
+        ivtv_window.width = var->xres;
+        ivtv_window.height = var->yres;
+
+        /* Minimum margin cannot be 0, as X won't allow such a mode */
+        if (!var->upper_margin) var->upper_margin++;
+        if (!var->left_margin) var->left_margin++;
+        ivtv_window.top = var->upper_margin - 1;
+        ivtv_window.left = var->left_margin - 1;
+
+        ivtv_fb_set_display_window(itv, &ivtv_window);
+
+        /* Force update of yuv registers */
+        itv->yuv_info.yuv_forced_update = 1;
+
+        IVTV_FB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n",
+                      var->xres, var->yres,
+                      var->xres_virtual, var->yres_virtual,
+                      var->bits_per_pixel);
+
+        IVTV_FB_DEBUG_INFO("Display position: %d, %d\n",
+                      var->left_margin, var->upper_margin);
+
+        IVTV_FB_DEBUG_INFO("Display filter: %s\n",
+                        (var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED ? "on" : "off");
+        IVTV_FB_DEBUG_INFO("Color space: %s\n", var->nonstd ? "YUV" : "RGB");
+
+        return 0;
+}
+
+static int ivtvfb_get_fix(struct ivtv *itv, struct fb_fix_screeninfo *fix)
+{
+        struct osd_info *oi = itv->osd_info;
+
+        IVTV_FB_DEBUG_INFO("ivtvfb_get_fix\n");
+        memset(fix, 0, sizeof(struct fb_fix_screeninfo));
+        strcpy(fix->id, "cx23415 TV out");
+        fix->smem_start = oi->video_pbase;
+        fix->smem_len = oi->video_buffer_size;
+        fix->type = FB_TYPE_PACKED_PIXELS;
+        fix->visual = (oi->bits_per_pixel == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
+        fix->xpanstep = 1;
+        fix->ypanstep = 1;
+        fix->ywrapstep = 0;
+        fix->line_length = oi->display_byte_stride;
+        fix->accel = FB_ACCEL_NONE;
+        return 0;
+}
+
+/* Check the requested display mode, returning -EINVAL if we can't
+   handle it. */
+
+static int _ivtvfb_check_var(struct fb_var_screeninfo *var, struct ivtv *itv)
+{
+        struct osd_info *oi = itv->osd_info;
+        int osd_height_limit;
+        u32 pixclock, hlimit, vlimit;
+
+        IVTV_FB_DEBUG_INFO("ivtvfb_check_var\n");
+
+        /* Set base references for mode calcs. */
+        if (itv->is_50hz) {
+                pixclock = 84316;
+                hlimit = 776;
+                vlimit = 591;
+                osd_height_limit = 576;
+        }
+        else {
+                pixclock = 83926;
+                hlimit = 776;
+                vlimit = 495;
+                osd_height_limit = 480;
+        }
+
+        /* Check the bits per pixel */
+        if (osd_compat) {
+                if (var->bits_per_pixel != 32) {
+                        IVTV_FB_DEBUG_WARN("Invalid colour mode: %d\n", var->bits_per_pixel);
+                        return -EINVAL;
+                }
+        }
+
+        if (var->bits_per_pixel == 8 || var->bits_per_pixel == 32) {
+                var->transp.offset = 24;
+                var->transp.length = 8;
+                var->red.offset = 16;
+                var->red.length = 8;
+                var->green.offset = 8;
+                var->green.length = 8;
+                var->blue.offset = 0;
+                var->blue.length = 8;
+        }
+        else if (var->bits_per_pixel == 16) {
+                /* To find out the true mode, check green length */
+                switch (var->green.length) {
+                        case 4:
+                                var->red.offset = 8;
+                                var->red.length = 4;
+                                var->green.offset = 4;
+                                var->green.length = 4;
+                                var->blue.offset = 0;
+                                var->blue.length = 4;
+                                var->transp.offset = 12;
+                                var->transp.length = 1;
+                                break;
+                        case 5:
+                                var->red.offset = 10;
+                                var->red.length = 5;
+                                var->green.offset = 5;
+                                var->green.length = 5;
+                                var->blue.offset = 0;
+                                var->blue.length = 5;
+                                var->transp.offset = 15;
+                                var->transp.length = 1;
+                                break;
+                        default:
+                                var->red.offset = 11;
+                                var->red.length = 5;
+                                var->green.offset = 5;
+                                var->green.length = 6;
+                                var->blue.offset = 0;
+                                var->blue.length = 5;
+                                var->transp.offset = 0;
+                                var->transp.length = 0;
+                                break;
+                }
+        }
+        else {
+                IVTV_FB_DEBUG_WARN("Invalid colour mode: %d\n", var->bits_per_pixel);
+                return -EINVAL;
+        }
+
+        /* Check the resolution */
+        if (osd_compat) {
+                if (var->xres != oi->ivtvfb_defined.xres ||
+                    var->yres != oi->ivtvfb_defined.yres ||
+                    var->xres_virtual != oi->ivtvfb_defined.xres_virtual ||
+                    var->yres_virtual != oi->ivtvfb_defined.yres_virtual) {
+                        IVTV_FB_DEBUG_WARN("Invalid resolution: %dx%d (virtual %dx%d)\n",
+                                var->xres, var->yres, var->xres_virtual, var->yres_virtual);
+                        return -EINVAL;
+                }
+        }
+        else {
+                if (var->xres > IVTV_OSD_MAX_WIDTH || var->yres > osd_height_limit) {
+                        IVTV_FB_DEBUG_WARN("Invalid resolution: %dx%d\n",
+                                        var->xres, var->yres);
+                        return -EINVAL;
+                }
+
+                /* Max horizontal size is 1023 @ 32bpp, 2046 & 16bpp, 4092 @ 8bpp */
+                if (var->xres_virtual > 4095 / (var->bits_per_pixel / 8) ||
+                    var->xres_virtual * var->yres_virtual * (var->bits_per_pixel / 8) > oi->video_buffer_size ||
+                    var->xres_virtual < var->xres ||
+                    var->yres_virtual < var->yres) {
+                        IVTV_FB_DEBUG_WARN("Invalid virtual resolution: %dx%d\n",
+                                var->xres_virtual, var->yres_virtual);
+                        return -EINVAL;
+                }
+        }
+
+        /* Some extra checks if in 8 bit mode */
+        if (var->bits_per_pixel == 8) {
+                /* Width must be a multiple of 4 */
+                if (var->xres & 3) {
+                        IVTV_FB_DEBUG_WARN("Invalid resolution for 8bpp: %d\n", var->xres);
+                        return -EINVAL;
+                }
+                if (var->xres_virtual & 3) {
+                        IVTV_FB_DEBUG_WARN("Invalid virtual resolution for 8bpp: %d)\n", var->xres_virtual);
+                        return -EINVAL;
+                }
+        }
+        else if (var->bits_per_pixel == 16) {
+                /* Width must be a multiple of 2 */
+                if (var->xres & 1) {
+                        IVTV_FB_DEBUG_WARN("Invalid resolution for 16bpp: %d\n", var->xres);
+                        return -EINVAL;
+                }
+                if (var->xres_virtual & 1) {
+                        IVTV_FB_DEBUG_WARN("Invalid virtual resolution for 16bpp: %d)\n", var->xres_virtual);
+                        return -EINVAL;
+                }
+        }
+
+        /* Now check the offsets */
+        if (var->xoffset >= var->xres_virtual || var->yoffset >= var->yres_virtual) {
+                IVTV_FB_DEBUG_WARN("Invalid offset: %d (%d) %d (%d)\n",
+                        var->xoffset, var->xres_virtual, var->yoffset, var->yres_virtual);
+                return -EINVAL;
+        }
+
+        /* Check pixel format */
+        if (var->nonstd > 1) {
+                IVTV_FB_DEBUG_WARN("Invalid nonstd % d\n", var->nonstd);
+                return -EINVAL;
+        }
+
+        /* Check video mode */
+        if (((var->vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED) &&
+                ((var->vmode & FB_VMODE_MASK) != FB_VMODE_INTERLACED)) {
+                IVTV_FB_DEBUG_WARN("Invalid video mode: %d\n", var->vmode & FB_VMODE_MASK);
+                return -EINVAL;
+        }
+
+        /* Check the left & upper margins
+           If the margins are too large, just center the screen
+           (enforcing margins causes too many problems) */
+
+        if (var->left_margin + var->xres > IVTV_OSD_MAX_WIDTH + 1) {
+                var->left_margin = 1 + ((IVTV_OSD_MAX_WIDTH - var->xres) / 2);
+        }
+        if (var->upper_margin + var->yres > (itv->is_50hz ? 577 : 481)) {
+                var->upper_margin = 1 + (((itv->is_50hz ? 576 : 480) - var->yres) / 2);
+        }
+
+        /* Maintain overall 'size' for a constant refresh rate */
+        var->right_margin = hlimit - var->left_margin - var->xres;
+        var->lower_margin = vlimit - var->upper_margin - var->yres;
+
+        /* Fixed sync times */
+        var->hsync_len = 24;
+        var->vsync_len = 2;
+
+        /* Non-interlaced / interlaced mode is used to switch the OSD filter
+           on or off. Adjust the clock timings to maintain a constant
+           vertical refresh rate. */
+        if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED)
+                var->pixclock = pixclock / 2;
+        else
+                var->pixclock = pixclock;
+
+        IVTV_FB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n",
+                      var->xres, var->yres,
+                      var->xres_virtual, var->yres_virtual,
+                      var->bits_per_pixel);
+
+        IVTV_FB_DEBUG_INFO("Display position: %d, %d\n",
+                      var->left_margin, var->upper_margin);
+
+        IVTV_FB_DEBUG_INFO("Display filter: %s\n",
+                        (var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED ? "on" : "off");
+        IVTV_FB_DEBUG_INFO("Color space: %s\n", var->nonstd ? "YUV" : "RGB");
+        return 0;
+}
+
+static int ivtvfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+        struct ivtv *itv = (struct ivtv *) info->par;
+        IVTV_FB_DEBUG_INFO("ivtvfb_check_var\n");
+        return _ivtvfb_check_var(var, itv);
+}
+
+static int ivtvfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+        u32 osd_pan_index;
+        struct ivtv *itv = (struct ivtv *) info->par;
+
+        osd_pan_index = (var->xoffset + (var->yoffset * var->xres_virtual))*var->bits_per_pixel/8;
+        write_reg(osd_pan_index, 0x02A0C);
+
+        /* Pass this info back the yuv handler */
+        itv->yuv_info.osd_x_pan = var->xoffset;
+        itv->yuv_info.osd_y_pan = var->yoffset;
+        /* Force update of yuv registers */
+        itv->yuv_info.yuv_forced_update = 1;
+        return 0;
+}
+
+static int ivtvfb_set_par(struct fb_info *info)
+{
+        int rc = 0;
+        struct ivtv *itv = (struct ivtv *) info->par;
+
+        IVTV_FB_DEBUG_INFO("ivtvfb_set_par\n");
+
+        rc = ivtvfb_set_var(itv, &info->var);
+        ivtvfb_pan_display(&info->var, info);
+        ivtvfb_get_fix(itv, &info->fix);
+        return rc;
+}
+
+static int ivtvfb_setcolreg(unsigned regno, unsigned red, unsigned green,
+                                unsigned blue, unsigned transp,
+                                struct fb_info *info)
+{
+        u32 color, *palette;
+        struct ivtv *itv = (struct ivtv *)info->par;
+
+        if (regno >= info->cmap.len)
+                return -EINVAL;
+
+        color = ((transp & 0xFF00) << 16) |((red & 0xFF00) << 8) | (green & 0xFF00) | ((blue & 0xFF00) >> 8);
+        if (info->var.bits_per_pixel <= 8) {
+                write_reg(regno, 0x02a30);
+                write_reg(color, 0x02a34);
+                return 0;
+        }
+        if (regno >= 16)
+                return -EINVAL;
+
+        palette = info->pseudo_palette;
+        if (info->var.bits_per_pixel == 16) {
+                switch (info->var.green.length) {
+                        case 4:
+                                color = ((red & 0xf000) >> 4) |
+                                        ((green & 0xf000) >> 8) |
+                                        ((blue & 0xf000) >> 12);
+                                break;
+                        case 5:
+                                color = ((red & 0xf800) >> 1) |
+                                        ((green & 0xf800) >> 6) |
+                                        ((blue & 0xf800) >> 11);
+                                break;
+                        case 6:
+                                color = (red & 0xf800 ) |
+                                        ((green & 0xfc00) >> 5) |
+                                        ((blue & 0xf800) >> 11);
+                                break;
+                }
+        }
+        palette[regno] = color;
+        return 0;
+}
+
+/* We don't really support blanking. All this does is enable or
+   disable the OSD. */
+static int ivtvfb_blank(int blank_mode, struct fb_info *info)
+{
+        struct ivtv *itv = (struct ivtv *)info->par;
+
+        IVTV_FB_DEBUG_INFO("Set blanking mode : %d\n", blank_mode);
+        switch (blank_mode) {
+        case FB_BLANK_UNBLANK:
+                ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 1);
+                break;
+        case FB_BLANK_NORMAL:
+        case FB_BLANK_HSYNC_SUSPEND:
+        case FB_BLANK_VSYNC_SUSPEND:
+        case FB_BLANK_POWERDOWN:
+                ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 0);
+                break;
+        }
+        return 0;
+}
+
+static struct fb_ops ivtvfb_ops = {
+        .owner = THIS_MODULE,
+        .fb_check_var   = ivtvfb_check_var,
+        .fb_set_par     = ivtvfb_set_par,
+        .fb_setcolreg   = ivtvfb_setcolreg,
+        .fb_fillrect    = cfb_fillrect,
+        .fb_copyarea    = cfb_copyarea,
+        .fb_imageblit   = cfb_imageblit,
+        .fb_cursor      = NULL,
+        .fb_ioctl       = ivtvfb_ioctl,
+        .fb_pan_display = ivtvfb_pan_display,
+        .fb_blank       = ivtvfb_blank,
+};
+
+/* Initialization */
+
+
+/* Setup our initial video mode */
+static int ivtvfb_init_vidmode(struct ivtv *itv)
+{
+        struct osd_info *oi = itv->osd_info;
+        struct v4l2_rect start_window;
+        int max_height;
+
+        /* Color mode */
+
+        if (osd_compat) osd_depth = 32;
+        if (osd_depth != 8 && osd_depth != 16 && osd_depth != 32) osd_depth = 8;
+        oi->bits_per_pixel = osd_depth;
+        oi->bytes_per_pixel = oi->bits_per_pixel / 8;
+
+        /* Invalidate current osd mode to force a mode switch later */
+        oi->osd_mode = -1;
+
+        /* Horizontal size & position */
+
+        if (osd_xres > 720) osd_xres = 720;
+
+        /* Must be a multiple of 4 for 8bpp & 2 for 16bpp */
+        if (osd_depth == 8)
+                osd_xres &= ~3;
+        else if (osd_depth == 16)
+                osd_xres &= ~1;
+
+        if (osd_xres)
+                start_window.width = osd_xres;
+        else
+                start_window.width = osd_compat ? 720: 640;
+
+        /* Check horizontal start (osd_left). */
+        if (osd_left && osd_left + start_window.width > 721) {
+                IVTV_FB_ERR("Invalid osd_left - assuming default\n");
+                osd_left = 0;
+        }
+
+        /* Hardware coords start at 0, user coords start at 1. */
+        osd_left--;
+
+        start_window.left = osd_left >= 0 ? osd_left : ((IVTV_OSD_MAX_WIDTH - start_window.width) / 2);
+
+        oi->display_byte_stride =
+                        start_window.width * oi->bytes_per_pixel;
+
+        /* Vertical size & position */
+
+        max_height = itv->is_50hz ? 576 : 480;
+
+        if (osd_yres > max_height)
+                osd_yres = max_height;
+
+        if (osd_yres)
+                start_window.height = osd_yres;
+        else
+                start_window.height = osd_compat ? max_height : (itv->is_50hz ? 480 : 400);
+
+        /* Check vertical start (osd_upper). */
+        if (osd_upper + start_window.height > max_height + 1) {
+                IVTV_FB_ERR("Invalid osd_upper - assuming default\n");
+                osd_upper = 0;
+        }
+
+        /* Hardware coords start at 0, user coords start at 1. */
+        osd_upper--;
+
+        start_window.top = osd_upper >= 0 ? osd_upper : ((max_height - start_window.height) / 2);
+
+        oi->display_width = start_window.width;
+        oi->display_height = start_window.height;
+
+        /* Generate a valid fb_var_screeninfo */
+
+        oi->ivtvfb_defined.xres = oi->display_width;
+        oi->ivtvfb_defined.yres = oi->display_height;
+        oi->ivtvfb_defined.xres_virtual = oi->display_width;
+        oi->ivtvfb_defined.yres_virtual = oi->display_height;
+        oi->ivtvfb_defined.bits_per_pixel = oi->bits_per_pixel;
+        oi->ivtvfb_defined.vmode = (osd_laced ? FB_VMODE_INTERLACED : FB_VMODE_NONINTERLACED);
+        oi->ivtvfb_defined.left_margin = start_window.left + 1;
+        oi->ivtvfb_defined.upper_margin = start_window.top + 1;
+        oi->ivtvfb_defined.accel_flags = FB_ACCEL_NONE;
+        oi->ivtvfb_defined.nonstd = 0;
+
+        /* We've filled in the most data, let the usual mode check
+           routine fill in the rest. */
+        _ivtvfb_check_var(&oi->ivtvfb_defined, itv);
+
+        /* Generate valid fb_fix_screeninfo */
+
+        ivtvfb_get_fix(itv, &oi->ivtvfb_fix);
+
+        /* Generate valid fb_info */
+
+        oi->ivtvfb_info.node = -1;
+        oi->ivtvfb_info.flags = FBINFO_FLAG_DEFAULT;
+        oi->ivtvfb_info.fbops = &ivtvfb_ops;
+        oi->ivtvfb_info.par = itv;
+        oi->ivtvfb_info.var = oi->ivtvfb_defined;
+        oi->ivtvfb_info.fix = oi->ivtvfb_fix;
+        oi->ivtvfb_info.screen_base = (u8 __iomem *)oi->video_vbase;
+        oi->ivtvfb_info.fbops = &ivtvfb_ops;
+
+        /* Supply some monitor specs. Bogus values will do for now */
+        oi->ivtvfb_info.monspecs.hfmin = 8000;
+        oi->ivtvfb_info.monspecs.hfmax = 70000;
+        oi->ivtvfb_info.monspecs.vfmin = 10;
+        oi->ivtvfb_info.monspecs.vfmax = 100;
+
+        /* Allocate color map */
+        if (fb_alloc_cmap(&oi->ivtvfb_info.cmap, 256, 1)) {
+                IVTV_FB_ERR("abort, unable to alloc cmap\n");
+                return -ENOMEM;
+        }
+
+        /* Allocate the pseudo palette */
+        oi->ivtvfb_info.pseudo_palette = kmalloc(sizeof(u32) * 16, GFP_KERNEL);
+
+        if (!oi->ivtvfb_info.pseudo_palette) {
+                IVTV_FB_ERR("abort, unable to alloc pseudo pallete\n");
+                return -ENOMEM;
+        }
+
+        return 0;
+}
+
+/* Find OSD buffer base & size. Add to mtrr. Zero osd buffer. */
+
+static int ivtvfb_init_io(struct ivtv *itv)
+{
+        struct osd_info *oi = itv->osd_info;
+
+        mutex_lock(&itv->serialize_lock);
+        if (ivtv_init_on_first_open(itv)) {
+                mutex_unlock(&itv->serialize_lock);
+                IVTV_FB_ERR("Failed to initialize ivtv\n");
+                return -ENXIO;
+        }
+        mutex_unlock(&itv->serialize_lock);
+
+        ivtv_fb_get_framebuffer(itv, &oi->video_rbase, &oi->video_buffer_size);
+
+        /* The osd buffer size depends on the number of video buffers allocated
+           on the PVR350 itself. For now we'll hardcode the smallest osd buffer
+           size to prevent any overlap. */
+        oi->video_buffer_size = 1704960;
+
+        oi->video_pbase = itv->base_addr + IVTV_DECODER_OFFSET + oi->video_rbase;
+        oi->video_vbase = itv->dec_mem + oi->video_rbase;
+
+        if (!oi->video_vbase) {
+                IVTV_FB_ERR("abort, video memory 0x%x @ 0x%lx isn't mapped!\n",
+                     oi->video_buffer_size, oi->video_pbase);
+                return -EIO;
+        }
+
+        IVTV_FB_INFO("Framebuffer at 0x%lx, mapped to 0x%p, size %dk\n",
+                        oi->video_pbase, oi->video_vbase,
+                        oi->video_buffer_size / 1024);
+
+#ifdef CONFIG_MTRR
+        {
+                /* Find the largest power of two that maps the whole buffer */
+                int size_shift = 31;
+
+                while (!(oi->video_buffer_size & (1 << size_shift))) {
+                        size_shift--;
+                }
+                size_shift++;
+                oi->fb_start_aligned_physaddr = oi->video_pbase & ~((1 << size_shift) - 1);
+                oi->fb_end_aligned_physaddr = oi->video_pbase + oi->video_buffer_size;
+                oi->fb_end_aligned_physaddr += (1 << size_shift) - 1;
+                oi->fb_end_aligned_physaddr &= ~((1 << size_shift) - 1);
+                if (mtrr_add(oi->fb_start_aligned_physaddr,
+                        oi->fb_end_aligned_physaddr - oi->fb_start_aligned_physaddr,
+                             MTRR_TYPE_WRCOMB, 1) < 0) {
+                        IVTV_FB_WARN("cannot use mttr\n");
+                        oi->fb_start_aligned_physaddr = 0;
+                        oi->fb_end_aligned_physaddr = 0;
+                }
+        }
+#endif
+
+        /* Blank the entire osd. */
+        memset_io(oi->video_vbase, 0, oi->video_buffer_size);
+
+        return 0;
+}
+
+/* Release any memory we've grabbed & remove mtrr entry */
+static void ivtvfb_release_buffers (struct ivtv *itv)
+{
+        struct osd_info *oi = itv->osd_info;
+
+        /* Release cmap */
+        if (oi->ivtvfb_info.cmap.len);
+        fb_dealloc_cmap(&oi->ivtvfb_info.cmap);
+
+        /* Release pseudo palette */
+        if (oi->ivtvfb_info.pseudo_palette)
+                kfree(oi->ivtvfb_info.pseudo_palette);
+
+#ifdef CONFIG_MTRR
+        if (oi->fb_end_aligned_physaddr) {
+                mtrr_del(-1, oi->fb_start_aligned_physaddr,
+                        oi->fb_end_aligned_physaddr - oi->fb_start_aligned_physaddr);
+        }
+#endif
+
+        kfree(oi);
+        itv->osd_info = NULL;
+}
+
+/* Initialize the specified card */
+
+static int ivtvfb_init_card(struct ivtv *itv)
+{
+        int rc;
+
+        if (itv->osd_info) {
+                IVTV_FB_ERR("Card %d already initialised\n", ivtv_fb_card_id);
+                return -EBUSY;
+        }
+
+        itv->osd_info = kzalloc(sizeof(struct osd_info), GFP_ATOMIC);
+        if (itv->osd_info == 0) {
+                IVTV_FB_ERR("Failed to allocate memory for osd_info\n");
+                return -ENOMEM;
+        }
+
+        /* Find & setup the OSD buffer */
+        if ((rc = ivtvfb_init_io(itv)))
+                return rc;
+
+        /* Set the startup video mode information */
+        if ((rc = ivtvfb_init_vidmode(itv))) {
+                ivtvfb_release_buffers(itv);
+                return rc;
+        }
+
+        /* Register the framebuffer */
+        if (register_framebuffer(&itv->osd_info->ivtvfb_info) < 0) {
+                ivtvfb_release_buffers(itv);
+                return -EINVAL;
+        }
+
+        itv->osd_video_pbase = itv->osd_info->video_pbase;
+
+        /* Set the card to the requested mode */
+        ivtvfb_set_par(&itv->osd_info->ivtvfb_info);
+
+        /* Set color 0 to black */
+        write_reg(0, 0x02a30);
+        write_reg(0, 0x02a34);
+
+        /* Enable the osd */
+        ivtvfb_blank(FB_BLANK_UNBLANK, &itv->osd_info->ivtvfb_info);
+
+        /* Note if we're running in compatibility mode */
+        if (osd_compat)
+                IVTV_FB_INFO("Running in compatibility mode. Display resize & mode change disabled\n");
+
+        /* Allocate DMA */
+        ivtv_udma_alloc(itv);
+        return 0;
+
+}
+
+static int __init ivtvfb_init(void)
+{
+        struct ivtv *itv;
+        int i, registered = 0;
+
+        if (ivtv_fb_card_id < -1 || ivtv_fb_card_id >= IVTV_MAX_CARDS) {
+                printk(KERN_ERR "ivtv-fb:  ivtv_fb_card_id parameter is out of range (valid range: -1 - %d)\n",
+                     IVTV_MAX_CARDS - 1);
+                return -EINVAL;
+        }
+
+        /* Locate & initialise all cards supporting an OSD. */
+        for (i = 0; i < ivtv_cards_active; i++) {
+                if (ivtv_fb_card_id != -1 && i != ivtv_fb_card_id)
+                        continue;
+                itv = ivtv_cards[i];
+                if (itv && (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)) {
+                        if (ivtvfb_init_card(itv) == 0) {
+                                IVTV_FB_INFO("Framebuffer registered on ivtv card id %d\n", i);
+                                registered++;
+                        }
+                }
+        }
+        if (!registered) {
+                printk(KERN_ERR "ivtv-fb:  no cards found");
+                return -ENODEV;
+        }
+        return 0;
+}
+
+static void ivtvfb_cleanup(void)
+{
+        struct ivtv *itv;
+        int i;
+
+        printk(KERN_INFO "ivtv-fb:  Unloading framebuffer module\n");
+
+        for (i = 0; i < ivtv_cards_active; i++) {
+                itv = ivtv_cards[i];
+                if (itv && (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) && itv->osd_info) {
+                        IVTV_FB_DEBUG_INFO("Unregister framebuffer %d\n", i);
+                        ivtvfb_blank(FB_BLANK_POWERDOWN, &itv->osd_info->ivtvfb_info);
+                        unregister_framebuffer(&itv->osd_info->ivtvfb_info);
+                        ivtvfb_release_buffers(itv);
+                        itv->osd_video_pbase = 0;
+                }
+        }
+}
+
+module_init(ivtvfb_init);
+module_exit(ivtvfb_cleanup);