From 0d6526f82c3cdefcca47f73f5fc08dc6f335eac6 Mon Sep 17 00:00:00 2001
From: Tim Chen <tim.c.chen@linux.intel.com>
Date: Mon, 21 Sep 2026 17:37:22 -0700
Subject: sched/cache: Keep nr_pref_llc_running in the runnable domain, to fix
 LLC mis-scheduling bug

alb_break_llc() decides whether to break LLC preference during active
load balance. It does so by testing that every runnable fair task on the
source rq prefers its LLC:

	env->src_rq->nr_pref_llc_running == env->src_rq->cfs.h_nr_runnable

But the two counters cover different sets. nr_pref_llc_running is updated
in account_llc_enqueue()/account_llc_dequeue(), next to cfs_rq->nr_queued,
so it follows queued tasks. h_nr_runnable is updated in set_delayed()/
clear_delayed() and drops delay-dequeued tasks.

So under DELAY_DEQUEUE, a preferring task that goes to sleep stays counted
in nr_pref_llc_running while h_nr_runnable falls. The equality then breaks,
alb_break_llc() returns false, and active balance is free to pull a task
off its preferred LLC. Active balance only moves runnable tasks, and this
is the only LLC check it consults: once the stopper runs, LBF_ACTIVE_LB
skips the per-task test in can_migrate_task(). The runnable set is the one
we want.

Fix it on the counter side. A task should be counted in
nr_pref_llc_running exactly while it is both queued on its preferred LLC
(pref_llc_queued) and runnable (!sched_delayed). Define that membership
once in task_pref_llc_runnable(), and adjust the counter only through
pref_llc_running_inc()/pref_llc_running_dec() from the four sites that
change either input: account_llc_enqueue(), account_llc_dequeue(),
set_delayed() and clear_delayed(). Gating every update on the same
predicate keeps the delay, wake and dequeue paths from double-counting
or underflowing; see the comments at those sites for the ordering.

nr_llc_running and sd->llc_counts are not touched and stay on queued
semantics.

Fixes: 714059f79ff0 ("sched/cache: Handle moving single tasks to/from their preferred LLC")
Closes: https://lore.kernel.org/lkml/20260827135000.735138-1-zhanxusheng@xiaomi.com/
Reported-by: Zhan Xusheng <zhanxusheng@xiaomi.com>
Suggested-by: Chen Yu <yu.c.chen@intel.com>
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Kayra Cizmeci <kayracizmeci@gmail.com>
Cc: <stable@kernel.org> # v7.2.x
Link: https://patch.msgid.link/06af61afedac32e6477f57feb4d658f6c411c3af.1790035273.git.tim.c.chen@linux.intel.com
---
 drivers/video/fbdev/i810/Makefile     |   18 +
 drivers/video/fbdev/i810/i810-i2c.c   |  175 +++
 drivers/video/fbdev/i810/i810.h       |  298 +++++
 drivers/video/fbdev/i810/i810_accel.c |  456 +++++++
 drivers/video/fbdev/i810/i810_dvt.c   |  313 +++++
 drivers/video/fbdev/i810/i810_gtf.c   |  276 ++++
 drivers/video/fbdev/i810/i810_main.c  | 2234 +++++++++++++++++++++++++++++++++
 drivers/video/fbdev/i810/i810_main.h  |   69 +
 drivers/video/fbdev/i810/i810_regs.h  |  275 ++++
 9 files changed, 4114 insertions(+)
 create mode 100644 drivers/video/fbdev/i810/Makefile
 create mode 100644 drivers/video/fbdev/i810/i810-i2c.c
 create mode 100644 drivers/video/fbdev/i810/i810.h
 create mode 100644 drivers/video/fbdev/i810/i810_accel.c
 create mode 100644 drivers/video/fbdev/i810/i810_dvt.c
 create mode 100644 drivers/video/fbdev/i810/i810_gtf.c
 create mode 100644 drivers/video/fbdev/i810/i810_main.c
 create mode 100644 drivers/video/fbdev/i810/i810_main.h
 create mode 100644 drivers/video/fbdev/i810/i810_regs.h

(limited to 'drivers/video/fbdev/i810')

diff --git a/drivers/video/fbdev/i810/Makefile b/drivers/video/fbdev/i810/Makefile
new file mode 100644
index 000000000..3e466510f
--- /dev/null
+++ b/drivers/video/fbdev/i810/Makefile
@@ -0,0 +1,18 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for the Intel 810/815 framebuffer driver
+#
+
+obj-$(CONFIG_FB_I810)		+= i810fb.o
+
+i810fb-objs                     := i810_main.o i810_accel.o
+
+ifdef CONFIG_FB_I810_GTF
+i810fb-objs                     += i810_gtf.o
+else
+i810fb-objs                     += i810_dvt.o
+endif
+
+ifdef CONFIG_FB_I810_I2C
+i810fb-objs += i810-i2c.o
+endif
diff --git a/drivers/video/fbdev/i810/i810-i2c.c b/drivers/video/fbdev/i810/i810-i2c.c
new file mode 100644
index 000000000..7db17d0d8
--- /dev/null
+++ b/drivers/video/fbdev/i810/i810-i2c.c
@@ -0,0 +1,175 @@
+ /*-*- linux-c -*-
+ *  linux/drivers/video/i810-i2c.c -- Intel 810/815 I2C support
+ *
+ *      Copyright (C) 2004 Antonino Daplas<adaplas@pol.net>
+ *      All Rights Reserved
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License. See the file COPYING in the main directory of this archive for
+ *  more details.
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/gfp.h>
+#include <linux/pci.h>
+#include <linux/fb.h>
+#include "i810.h"
+#include "i810_regs.h"
+#include "i810_main.h"
+#include "../edid.h"
+
+/* bit locations in the registers */
+#define SCL_DIR_MASK		0x0001
+#define SCL_DIR			0x0002
+#define SCL_VAL_MASK		0x0004
+#define SCL_VAL_OUT		0x0008
+#define SCL_VAL_IN		0x0010
+#define SDA_DIR_MASK		0x0100
+#define SDA_DIR			0x0200
+#define SDA_VAL_MASK		0x0400
+#define SDA_VAL_OUT		0x0800
+#define SDA_VAL_IN		0x1000
+
+#define DEBUG  /* define this for verbose EDID parsing output */
+
+#ifdef DEBUG
+#define DPRINTK(fmt, args...) printk(fmt,## args)
+#else
+#define DPRINTK(fmt, args...)
+#endif
+
+static void i810i2c_setscl(void *data, int state)
+{
+        struct i810fb_i2c_chan    *chan = data;
+        struct i810fb_par         *par = chan->par;
+	u8                        __iomem *mmio = par->mmio_start_virtual;
+
+	if (state)
+		i810_writel(mmio, chan->ddc_base, SCL_DIR_MASK | SCL_VAL_MASK);
+	else
+		i810_writel(mmio, chan->ddc_base, SCL_DIR | SCL_DIR_MASK | SCL_VAL_MASK);
+	i810_readl(mmio, chan->ddc_base);	/* flush posted write */
+}
+
+static void i810i2c_setsda(void *data, int state)
+{
+        struct i810fb_i2c_chan    *chan = data;
+        struct i810fb_par         *par = chan->par;
+	u8                        __iomem *mmio = par->mmio_start_virtual;
+
+	if (state)
+		i810_writel(mmio, chan->ddc_base, SDA_DIR_MASK | SDA_VAL_MASK);
+	else
+		i810_writel(mmio, chan->ddc_base, SDA_DIR | SDA_DIR_MASK | SDA_VAL_MASK);
+	i810_readl(mmio, chan->ddc_base);	/* flush posted write */
+}
+
+static int i810i2c_getscl(void *data)
+{
+        struct i810fb_i2c_chan    *chan = data;
+        struct i810fb_par         *par = chan->par;
+	u8                        __iomem *mmio = par->mmio_start_virtual;
+
+	i810_writel(mmio, chan->ddc_base, SCL_DIR_MASK);
+	i810_writel(mmio, chan->ddc_base, 0);
+	return ((i810_readl(mmio, chan->ddc_base) & SCL_VAL_IN) != 0);
+}
+
+static int i810i2c_getsda(void *data)
+{
+        struct i810fb_i2c_chan    *chan = data;
+        struct i810fb_par         *par = chan->par;
+	u8                        __iomem *mmio = par->mmio_start_virtual;
+
+	i810_writel(mmio, chan->ddc_base, SDA_DIR_MASK);
+	i810_writel(mmio, chan->ddc_base, 0);
+	return ((i810_readl(mmio, chan->ddc_base) & SDA_VAL_IN) != 0);
+}
+
+static int i810_setup_i2c_bus(struct i810fb_i2c_chan *chan, const char *name)
+{
+        int rc;
+
+        strcpy(chan->adapter.name, name);
+        chan->adapter.owner             = THIS_MODULE;
+        chan->adapter.algo_data         = &chan->algo;
+        chan->adapter.dev.parent        = &chan->par->dev->dev;
+	chan->algo.setsda               = i810i2c_setsda;
+	chan->algo.setscl               = i810i2c_setscl;
+	chan->algo.getsda               = i810i2c_getsda;
+	chan->algo.getscl               = i810i2c_getscl;
+	chan->algo.udelay               = 10;
+        chan->algo.timeout              = (HZ/2);
+        chan->algo.data                 = chan;
+
+        i2c_set_adapdata(&chan->adapter, chan);
+
+        /* Raise SCL and SDA */
+        chan->algo.setsda(chan, 1);
+        chan->algo.setscl(chan, 1);
+        udelay(20);
+
+        rc = i2c_bit_add_bus(&chan->adapter);
+
+        if (rc == 0)
+                dev_dbg(&chan->par->dev->dev, "I2C bus %s registered.\n",name);
+        else {
+                dev_warn(&chan->par->dev->dev, "Failed to register I2C bus "
+			 "%s.\n", name);
+		chan->par = NULL;
+	}
+
+        return rc;
+}
+
+void i810_create_i2c_busses(struct i810fb_par *par)
+{
+        par->chan[0].par        = par;
+	par->chan[1].par        = par;
+	par->chan[2].par        = par;
+
+	par->chan[0].ddc_base = GPIOA;
+	i810_setup_i2c_bus(&par->chan[0], "I810-DDC");
+	par->chan[1].ddc_base = GPIOB;
+	i810_setup_i2c_bus(&par->chan[1], "I810-I2C");
+	par->chan[2].ddc_base = GPIOC;
+	i810_setup_i2c_bus(&par->chan[2], "I810-GPIOC");
+}
+
+void i810_delete_i2c_busses(struct i810fb_par *par)
+{
+        if (par->chan[0].par)
+		i2c_del_adapter(&par->chan[0].adapter);
+        par->chan[0].par = NULL;
+
+	if (par->chan[1].par)
+		i2c_del_adapter(&par->chan[1].adapter);
+	par->chan[1].par = NULL;
+
+	if (par->chan[2].par)
+		i2c_del_adapter(&par->chan[2].adapter);
+	par->chan[2].par = NULL;
+}
+
+int i810_probe_i2c_connector(struct fb_info *info, u8 **out_edid, int conn)
+{
+	struct i810fb_par *par = info->par;
+        u8 *edid = NULL;
+
+	DPRINTK("i810-i2c: Probe DDC%i Bus\n", conn+1);
+	if (conn < par->ddc_num) {
+		edid = fb_ddc_read(&par->chan[conn].adapter);
+	} else {
+		const u8 *e = fb_firmware_edid(info->device);
+
+		if (e != NULL) {
+			DPRINTK("i810-i2c: Getting EDID from BIOS\n");
+			edid = kmemdup(e, EDID_LENGTH, GFP_KERNEL);
+		}
+	}
+
+	*out_edid = edid;
+
+        return (edid) ? 0 : 1;
+}
diff --git a/drivers/video/fbdev/i810/i810.h b/drivers/video/fbdev/i810/i810.h
new file mode 100644
index 000000000..7b1c002bf
--- /dev/null
+++ b/drivers/video/fbdev/i810/i810.h
@@ -0,0 +1,298 @@
+/*-*- linux-c -*-
+ *  linux/drivers/video/i810.h -- Intel 810 General Definitions/Declarations
+ *
+ *      Copyright (C) 2001 Antonino Daplas<adaplas@pol.net>
+ *      All Rights Reserved      
+ *
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License. See the file COPYING in the main directory of this archive for
+ *  more details.
+ */
+
+#ifndef __I810_H__
+#define __I810_H__
+
+#include <linux/list.h>
+#include <linux/agp_backend.h>
+#include <linux/fb.h>
+#include <linux/i2c.h>
+#include <linux/i2c-algo-bit.h>
+#include <video/vga.h>
+
+/* Fence */
+#define TILEWALK_X            (0 << 12)
+#define TILEWALK_Y            (1 << 12)
+
+/* Raster ops */
+#define COLOR_COPY_ROP        0xF0
+#define PAT_COPY_ROP          0xCC
+#define CLEAR_ROP             0x00
+#define WHITE_ROP             0xFF
+#define INVERT_ROP            0x55
+#define XOR_ROP               0x5A
+
+/* 2D Engine definitions */
+#define SOLIDPATTERN          0x80000000
+#define NONSOLID              0x00000000
+#define BPP8                  (0 << 24)
+#define BPP16                 (1 << 24)
+#define BPP24                 (2 << 24)
+
+#define PIXCONF8              (2 << 16)
+#define PIXCONF15             (4 << 16)
+#define PIXCONF16             (5 << 16)
+#define PIXCONF24             (6 << 16)
+#define PIXCONF32             (7 << 16)
+
+#define DYN_COLOR_EN          (1 << 26)
+#define DYN_COLOR_DIS         (0 << 26)
+#define INCREMENT             0x00000000
+#define DECREMENT             (0x01 << 30)
+#define ARB_ON                0x00000001
+#define ARB_OFF               0x00000000
+#define SYNC_FLIP             0x00000000
+#define ASYNC_FLIP            0x00000040
+#define OPTYPE_MASK           0xE0000000
+#define PARSER_MASK           0x001F8000 
+#define D2_MASK               0x001FC000         /* 2D mask */
+
+/* Instruction type */
+/* There are more but pertains to 3D */
+#define PARSER                0x00000000
+#define BLIT                  (0x02 << 29)
+#define RENDER                (0x03 << 29)
+            
+/* Parser */
+#define NOP                   0x00               /* No operation, padding */
+#define BP_INT                (0x01 << 23)         /* Breakpoint interrupt */
+#define USR_INT               (0x02 << 23)         /* User interrupt */
+#define WAIT_FOR_EVNT         (0x03 << 23)         /* Wait for event */
+#define FLUSH                 (0x04 << 23)              
+#define CONTEXT_SEL           (0x05 << 23)
+#define REPORT_HEAD           (0x07 << 23)
+#define ARB_ON_OFF            (0x08 << 23)
+#define OVERLAY_FLIP          (0x11 << 23)
+#define LOAD_SCAN_INC         (0x12 << 23)
+#define LOAD_SCAN_EX          (0x13 << 23)
+#define FRONT_BUFFER          (0x14 << 23)
+#define DEST_BUFFER           (0x15 << 23)
+#define Z_BUFFER              (0x16 << 23)       
+
+#define STORE_DWORD_IMM       (0x20 << 23)
+#define STORE_DWORD_IDX       (0x21 << 23)
+#define BATCH_BUFFER          (0x30 << 23)
+
+/* Blit */
+#define SETUP_BLIT                      0x00
+#define SETUP_MONO_PATTERN_SL_BLT       (0x10 << 22)
+#define PIXEL_BLT                       (0x20 << 22)
+#define SCANLINE_BLT                    (0x21 << 22)
+#define TEXT_BLT                        (0x22 << 22)
+#define TEXT_IMM_BLT                    (0x30 << 22)
+#define COLOR_BLT                       (0x40 << 22)
+#define MONO_PAT_BLIT                   (0x42 << 22)
+#define SOURCE_COPY_BLIT                (0x43 << 22)
+#define MONO_SOURCE_COPY_BLIT           (0x44 << 22)
+#define SOURCE_COPY_IMMEDIATE           (0x60 << 22)
+#define MONO_SOURCE_COPY_IMMEDIATE      (0x61 << 22)
+
+#define VERSION_MAJOR            0
+#define VERSION_MINOR            9
+#define VERSION_TEENIE           0
+#define BRANCH_VERSION           ""
+
+
+/* mvo: intel i815 */
+#ifndef PCI_DEVICE_ID_INTEL_82815_100
+  #define PCI_DEVICE_ID_INTEL_82815_100           0x1102
+#endif
+#ifndef PCI_DEVICE_ID_INTEL_82815_NOAGP
+  #define PCI_DEVICE_ID_INTEL_82815_NOAGP         0x1112
+#endif
+#ifndef PCI_DEVICE_ID_INTEL_82815_FULL_CTRL
+  #define PCI_DEVICE_ID_INTEL_82815_FULL_CTRL     0x1130
+#endif 
+
+/* General Defines */
+#define I810_PAGESIZE               4096
+#define MAX_DMA_SIZE                (1024 * 4096)
+#define SAREA_SIZE                  4096
+#define PCI_I810_MISCC              0x72
+#define MMIO_SIZE                   (512*1024)
+#define GTT_SIZE                    (16*1024) 
+#define RINGBUFFER_SIZE             (64*1024)
+#define CURSOR_SIZE                 4096 
+#define OFF                         0
+#define ON                          1
+#define MAX_KEY                     256
+#define WAIT_COUNT                  10000000
+#define IRING_PAD                   8
+#define FONTDATAMAX                 8192
+/* Masks (AND ops) and OR's */
+#define FB_START_MASK               (0x3f << (32 - 6))
+#define MMIO_ADDR_MASK              (0x1FFF << (32 - 13))
+#define FREQ_MASK                   (1 << 4)
+#define SCR_OFF                     0x20
+#define DRAM_ON                     0x08            
+#define DRAM_OFF                    0xE7
+#define PG_ENABLE_MASK              0x01
+#define RING_SIZE_MASK              (RINGBUFFER_SIZE - 1)
+
+/* defines for restoring registers partially */
+#define ADDR_MAP_MASK               (0x07 << 5)
+#define DISP_CTRL                   ~0
+#define PIXCONF_0                   (0x64 << 8)
+#define PIXCONF_2                   (0xF3 << 24)
+#define PIXCONF_1                   (0xF0 << 16)
+#define MN_MASK                     0x3FF03FF
+#define P_OR                        (0x7 << 4)                    
+#define DAC_BIT                     (1 << 16)
+#define INTERLACE_BIT               (1 << 7)
+#define IER_MASK                    (3 << 13)
+#define IMR_MASK                    (3 << 13)
+
+/* Power Management */
+#define DPMS_MASK                   0xF0000
+#define POWERON                     0x00000
+#define STANDBY                     0x20000
+#define SUSPEND                     0x80000
+#define POWERDOWN                   0xA0000
+#define EMR_MASK                    ~0x3F
+#define FW_BLC_MASK                 ~(0x3F|(7 << 8)|(0x3F << 12)|(7 << 20))
+
+/* Ringbuffer */
+#define RBUFFER_START_MASK          0xFFFFF000
+#define RBUFFER_SIZE_MASK           0x001FF000
+#define RBUFFER_HEAD_MASK           0x001FFFFC
+#define RBUFFER_TAIL_MASK           0x001FFFF8
+
+/* Video Timings */
+#define REF_FREQ                    24000000
+#define TARGET_N_MAX                30
+
+#define MAX_PIXELCLOCK              230000000
+#define MIN_PIXELCLOCK               15000000
+#define VFMAX                       60
+#define VFMIN                       60
+#define HFMAX                       30000
+#define HFMIN                       29000
+
+/* Cursor */
+#define CURSOR_ENABLE_MASK          0x1000             
+#define CURSOR_MODE_64_TRANS        4
+#define CURSOR_MODE_64_XOR	    5
+#define CURSOR_MODE_64_3C	    6	
+#define COORD_INACTIVE              0
+#define COORD_ACTIVE                (1 << 4)
+#define EXTENDED_PALETTE	    1
+  
+/* AGP Memory Types*/
+#define AGP_NORMAL_MEMORY           0
+#define AGP_DCACHE_MEMORY	    1
+#define AGP_PHYSICAL_MEMORY         2
+
+/* Allocated resource Flags */
+#define FRAMEBUFFER_REQ             1
+#define MMIO_REQ                    2
+#define PCI_DEVICE_ENABLED          4
+#define HAS_FONTCACHE               8 
+
+/* driver flags */
+#define HAS_ACCELERATION            2
+#define ALWAYS_SYNC                 4
+#define LOCKUP                      8
+
+struct gtt_data {
+	struct agp_memory *i810_fb_memory;
+	struct agp_memory *i810_cursor_memory;
+};
+
+struct mode_registers {
+	u32 pixclock, M, N, P;
+	u8 cr00, cr01, cr02, cr03;
+	u8 cr04, cr05, cr06, cr07;
+	u8 cr09, cr10, cr11, cr12;
+	u8 cr13, cr15, cr16, cr30;
+	u8 cr31, cr32, cr33, cr35, cr39;
+	u32 bpp8_100, bpp16_100;
+	u32 bpp24_100, bpp8_133;
+	u32 bpp16_133, bpp24_133;
+	u8 msr;
+};
+
+struct heap_data {
+        unsigned long physical;
+	__u8 __iomem *virtual;
+	u32 offset;
+	u32 size;
+};	
+
+struct state_registers {
+	u32 dclk_1d, dclk_2d, dclk_0ds;
+	u32 pixconf, fw_blc, pgtbl_ctl;
+	u32 fence0, hws_pga, dplystas;
+	u16 bltcntl, hwstam, ier, iir, imr;
+	u8 cr00, cr01, cr02, cr03, cr04;
+	u8 cr05, cr06, cr07, cr08, cr09;
+	u8 cr10, cr11, cr12, cr13, cr14;
+	u8 cr15, cr16, cr17, cr80, gr10;
+	u8 cr30, cr31, cr32, cr33, cr35;
+	u8 cr39, cr41, cr70, sr01, msr;
+};
+
+struct i810fb_par;
+
+struct i810fb_i2c_chan {
+	struct i810fb_par *par;
+	struct i2c_adapter adapter;
+	struct i2c_algo_bit_data algo;
+	unsigned long ddc_base;
+};
+
+struct i810fb_par {
+	struct mode_registers    regs;
+	struct state_registers   hw_state;
+	struct gtt_data          i810_gtt;
+	struct fb_ops            i810fb_ops;
+	struct pci_dev           *dev;
+	struct heap_data         aperture;
+	struct heap_data         fb;
+	struct heap_data         iring;
+	struct heap_data         cursor_heap;
+	struct vgastate          state;
+	struct i810fb_i2c_chan   chan[3];
+	struct mutex		 open_lock;
+	unsigned int		 use_count;
+	u32 pseudo_palette[16];
+	unsigned long mmio_start_phys;
+	u8 __iomem *mmio_start_virtual;
+	u8 *edid;
+	u32 pitch;
+	u32 pixconf;
+	u32 watermark;
+	u32 mem_freq;
+	u32 res_flags;
+	u32 dev_flags;
+	u32 cur_tail;
+	u32 depth;
+	u32 blit_bpp;
+	u32 ovract;
+	u32 cur_state;
+	u32 ddc_num;
+	int wc_cookie;
+	u16 bltcntl;
+	u8 interlace;
+};
+
+/* 
+ * Register I/O
+ */
+#define i810_readb(where, mmio) readb(mmio + where)
+#define i810_readw(where, mmio) readw(mmio + where)
+#define i810_readl(where, mmio) readl(mmio + where)
+#define i810_writeb(where, mmio, val) writeb(val, mmio + where) 
+#define i810_writew(where, mmio, val) writew(val, mmio + where)
+#define i810_writel(where, mmio, val) writel(val, mmio + where)
+
+#endif /* __I810_H__ */
diff --git a/drivers/video/fbdev/i810/i810_accel.c b/drivers/video/fbdev/i810/i810_accel.c
new file mode 100644
index 000000000..7672d2ea9
--- /dev/null
+++ b/drivers/video/fbdev/i810/i810_accel.c
@@ -0,0 +1,456 @@
+/*-*- linux-c -*-
+ *  linux/drivers/video/i810_accel.c -- Hardware Acceleration
+ *
+ *      Copyright (C) 2001 Antonino Daplas<adaplas@pol.net>
+ *      All Rights Reserved      
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License. See the file COPYING in the main directory of this archive for
+ *  more details.
+ */
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/fb.h>
+
+#include "i810_regs.h"
+#include "i810.h"
+#include "i810_main.h"
+
+static u32 i810fb_rop[] = {
+	COLOR_COPY_ROP, /* ROP_COPY */
+	XOR_ROP         /* ROP_XOR  */
+};
+
+/* Macros */
+#define PUT_RING(n) {                                        \
+	i810_writel(par->cur_tail, par->iring.virtual, n);   \
+        par->cur_tail += 4;                                  \
+        par->cur_tail &= RING_SIZE_MASK;                     \
+}                                                                      
+
+extern void flush_cache(void);
+
+/************************************************************/
+
+/* BLT Engine Routines */
+static inline void i810_report_error(u8 __iomem *mmio)
+{
+	printk("IIR     : 0x%04x\n"
+	       "EIR     : 0x%04x\n"
+	       "PGTBL_ER: 0x%04x\n"
+	       "IPEIR   : 0x%04x\n"
+	       "IPEHR   : 0x%04x\n",
+	       i810_readw(IIR, mmio),
+	       i810_readb(EIR, mmio),
+	       i810_readl(PGTBL_ER, mmio),
+	       i810_readl(IPEIR, mmio), 
+	       i810_readl(IPEHR, mmio));
+}
+
+/**
+ * wait_for_space - check ring buffer free space
+ * @space: amount of ringbuffer space needed in bytes
+ * @par: pointer to i810fb_par structure
+ *
+ * DESCRIPTION:
+ * The function waits until a free space from the ringbuffer
+ * is available 
+ */	
+static inline int wait_for_space(struct fb_info *info, u32 space)
+{
+	struct i810fb_par *par = info->par;
+	u32 head, count = WAIT_COUNT, tail;
+	u8 __iomem *mmio = par->mmio_start_virtual;
+
+	tail = par->cur_tail;
+	while (count--) {
+		head = i810_readl(IRING + 4, mmio) & RBUFFER_HEAD_MASK;	
+		if ((tail == head) || 
+		    (tail > head && 
+		     (par->iring.size - tail + head) >= space) || 
+		    (tail < head && (head - tail) >= space)) {
+			return 0;	
+		}
+	}
+	printk("ringbuffer lockup!!!\n");
+	i810_report_error(mmio); 
+	par->dev_flags |= LOCKUP;
+	info->pixmap.scan_align = 1;
+	return 1;
+}
+
+/** 
+ * wait_for_engine_idle - waits for all hardware engines to finish
+ * @par: pointer to i810fb_par structure
+ *
+ * DESCRIPTION:
+ * This waits for lring(0), iring(1), and batch(3), etc to finish and
+ * waits until ringbuffer is empty.
+ */
+static inline int wait_for_engine_idle(struct fb_info *info)
+{
+	struct i810fb_par *par = info->par;
+	u8 __iomem *mmio = par->mmio_start_virtual;
+	int count = WAIT_COUNT;
+
+	if (wait_for_space(info, par->iring.size)) /* flush */
+		return 1;
+
+	while((i810_readw(INSTDONE, mmio) & 0x7B) != 0x7B && --count); 
+	if (count) return 0;
+
+	printk("accel engine lockup!!!\n");
+	printk("INSTDONE: 0x%04x\n", i810_readl(INSTDONE, mmio));
+	i810_report_error(mmio); 
+	par->dev_flags |= LOCKUP;
+	info->pixmap.scan_align = 1;
+	return 1;
+}
+
+/* begin_iring - prepares the ringbuffer 
+ * @space: length of sequence in dwords
+ * @par: pointer to i810fb_par structure
+ *
+ * DESCRIPTION:
+ * Checks/waits for sufficient space in ringbuffer of size
+ * space.  Returns the tail of the buffer
+ */ 
+static inline u32 begin_iring(struct fb_info *info, u32 space)
+{
+	struct i810fb_par *par = info->par;
+
+	if (par->dev_flags & ALWAYS_SYNC) 
+		wait_for_engine_idle(info);
+	return wait_for_space(info, space);
+}
+
+/**
+ * end_iring - advances the buffer
+ * @par: pointer to i810fb_par structure
+ *
+ * DESCRIPTION:
+ * This advances the tail of the ringbuffer, effectively
+ * beginning the execution of the graphics instruction sequence.
+ */
+static inline void end_iring(struct i810fb_par *par)
+{
+	u8 __iomem *mmio = par->mmio_start_virtual;
+
+	i810_writel(IRING, mmio, par->cur_tail);
+}
+
+/**
+ * source_copy_blit - BLIT transfer operation
+ * @dwidth: width of rectangular graphics data
+ * @dheight: height of rectangular graphics data
+ * @dpitch: bytes per line of destination buffer
+ * @xdir: direction of copy (left to right or right to left)
+ * @src: address of first pixel to read from
+ * @dest: address of first pixel to write to
+ * @from: source address
+ * @where: destination address
+ * @rop: raster operation
+ * @blit_bpp: pixel format which can be different from the 
+ *            framebuffer's pixelformat
+ * @par: pointer to i810fb_par structure
+ *
+ * DESCRIPTION:
+ * This is a BLIT operation typically used when doing
+ * a 'Copy and Paste'
+ */
+static inline void source_copy_blit(int dwidth, int dheight, int dpitch, 
+				    int xdir, int src, int dest, int rop, 
+				    int blit_bpp, struct fb_info *info)
+{
+	struct i810fb_par *par = info->par;
+
+	if (begin_iring(info, 24 + IRING_PAD)) return;
+
+	PUT_RING(BLIT | SOURCE_COPY_BLIT | 4);
+	PUT_RING(xdir | rop << 16 | dpitch | DYN_COLOR_EN | blit_bpp);
+	PUT_RING(dheight << 16 | dwidth);
+	PUT_RING(dest);
+	PUT_RING(dpitch);
+	PUT_RING(src);
+
+	end_iring(par);
+}	
+
+/**
+ * color_blit - solid color BLIT operation
+ * @width: width of destination
+ * @height: height of destination
+ * @pitch: pixels per line of the buffer
+ * @dest: address of first pixel to write to
+ * @where: destination
+ * @rop: raster operation
+ * @what: color to transfer
+ * @blit_bpp: pixel format which can be different from the 
+ *            framebuffer's pixelformat
+ * @par: pointer to i810fb_par structure
+ *
+ * DESCRIPTION:
+ * A BLIT operation which can be used for  color fill/rectangular fill
+ */
+static inline void color_blit(int width, int height, int pitch,  int dest, 
+			      int rop, int what, int blit_bpp, 
+			      struct fb_info *info)
+{
+	struct i810fb_par *par = info->par;
+
+	if (begin_iring(info, 24 + IRING_PAD)) return;
+
+	PUT_RING(BLIT | COLOR_BLT | 3);
+	PUT_RING(rop << 16 | pitch | SOLIDPATTERN | DYN_COLOR_EN | blit_bpp);
+	PUT_RING(height << 16 | width);
+	PUT_RING(dest);
+	PUT_RING(what);
+	PUT_RING(NOP);
+
+	end_iring(par);
+}
+ 
+/**
+ * mono_src_copy_imm_blit - color expand from system memory to framebuffer
+ * @dwidth: width of destination
+ * @dheight: height of destination
+ * @dpitch: pixels per line of the buffer
+ * @dsize: size of bitmap in double words
+ * @dest: address of first byte of pixel;
+ * @rop: raster operation
+ * @blit_bpp: pixelformat to use which can be different from the 
+ *            framebuffer's pixelformat
+ * @src: address of image data
+ * @bg: backgound color
+ * @fg: forground color
+ * @par: pointer to i810fb_par structure
+ *
+ * DESCRIPTION:
+ * A color expand operation where the  source data is placed in the 
+ * ringbuffer itself. Useful for drawing text. 
+ *
+ * REQUIREMENT:
+ * The end of a scanline must be padded to the next word.
+ */
+static inline void mono_src_copy_imm_blit(int dwidth, int dheight, int dpitch,
+					  int dsize, int blit_bpp, int rop,
+					  int dest, const u32 *src, int bg,
+					  int fg, struct fb_info *info)
+{
+	struct i810fb_par *par = info->par;
+
+	if (begin_iring(info, 24 + (dsize << 2) + IRING_PAD)) return;
+
+	PUT_RING(BLIT | MONO_SOURCE_COPY_IMMEDIATE | (4 + dsize));
+	PUT_RING(DYN_COLOR_EN | blit_bpp | rop << 16 | dpitch);
+	PUT_RING(dheight << 16 | dwidth);
+	PUT_RING(dest);
+	PUT_RING(bg);
+	PUT_RING(fg);
+	while (dsize--) 
+		PUT_RING(*src++);
+
+	end_iring(par);
+}
+
+static inline void load_front(int offset, struct fb_info *info)
+{
+	struct i810fb_par *par = info->par;
+
+	if (begin_iring(info, 8 + IRING_PAD)) return;
+
+	PUT_RING(PARSER | FLUSH);
+	PUT_RING(NOP);
+
+	end_iring(par);
+
+	if (begin_iring(info, 8 + IRING_PAD)) return;
+
+	PUT_RING(PARSER | FRONT_BUFFER | ((par->pitch >> 3) << 8));
+	PUT_RING((par->fb.offset << 12) + offset);
+
+	end_iring(par);
+}
+
+/**
+ * i810fb_iring_enable - enables/disables the ringbuffer
+ * @mode: enable or disable
+ * @par: pointer to i810fb_par structure
+ *
+ * DESCRIPTION:
+ * Enables or disables the ringbuffer, effectively enabling or
+ * disabling the instruction/acceleration engine.
+ */
+static inline void i810fb_iring_enable(struct i810fb_par *par, u32 mode)
+{
+	u32 tmp;
+	u8 __iomem *mmio = par->mmio_start_virtual;
+
+	tmp = i810_readl(IRING + 12, mmio);
+	if (mode == OFF) 
+		tmp &= ~1;
+	else 
+		tmp |= 1;
+	flush_cache();
+	i810_writel(IRING + 12, mmio, tmp);
+}       
+
+void i810fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
+{
+	struct i810fb_par *par = info->par;
+	u32 dx, dy, width, height, dest, rop = 0, color = 0;
+
+	if (!info->var.accel_flags || par->dev_flags & LOCKUP ||
+	    par->depth == 4) {
+		cfb_fillrect(info, rect);
+		return;
+	}
+
+	if (par->depth == 1) 
+		color = rect->color;
+	else 
+		color = ((u32 *) (info->pseudo_palette))[rect->color];
+
+	rop = i810fb_rop[rect->rop];
+
+	dx = rect->dx * par->depth;
+	width = rect->width * par->depth;
+	dy = rect->dy;
+	height = rect->height;
+
+	dest = info->fix.smem_start + (dy * info->fix.line_length) + dx;
+	color_blit(width, height, info->fix.line_length, dest, rop, color, 
+		   par->blit_bpp, info);
+}
+	
+void i810fb_copyarea(struct fb_info *info, const struct fb_copyarea *region) 
+{
+	struct i810fb_par *par = info->par;
+	u32 sx, sy, dx, dy, pitch, width, height, src, dest, xdir;
+
+	if (!info->var.accel_flags || par->dev_flags & LOCKUP ||
+	    par->depth == 4) {
+		cfb_copyarea(info, region);
+		return;
+	}
+
+	dx = region->dx * par->depth;
+	sx = region->sx * par->depth;
+	width = region->width * par->depth;
+	sy = region->sy;
+	dy = region->dy;
+	height = region->height;
+
+	if (dx <= sx) {
+		xdir = INCREMENT;
+	}
+	else {
+		xdir = DECREMENT;
+		sx += width - 1;
+		dx += width - 1;
+	}
+	if (dy <= sy) {
+		pitch = info->fix.line_length;
+	}
+	else {
+		pitch = (-(info->fix.line_length)) & 0xFFFF;
+		sy += height - 1;
+		dy += height - 1;
+	}
+	src = info->fix.smem_start + (sy * info->fix.line_length) + sx;
+	dest = info->fix.smem_start + (dy * info->fix.line_length) + dx;
+
+	source_copy_blit(width, height, pitch, xdir, src, dest,
+			 PAT_COPY_ROP, par->blit_bpp, info);
+}
+
+void i810fb_imageblit(struct fb_info *info, const struct fb_image *image)
+{
+	struct i810fb_par *par = info->par;
+	u32 fg = 0, bg = 0, size, dst;
+	
+	if (!info->var.accel_flags || par->dev_flags & LOCKUP ||
+	    par->depth == 4 || image->depth != 1) {
+		cfb_imageblit(info, image);
+		return;
+	}
+
+	switch (info->var.bits_per_pixel) {
+	case 8:
+		fg = image->fg_color;
+		bg = image->bg_color;
+		break;
+	case 16:
+	case 24:
+		fg = ((u32 *)(info->pseudo_palette))[image->fg_color];
+		bg = ((u32 *)(info->pseudo_palette))[image->bg_color];
+		break;
+	}	
+	
+	dst = info->fix.smem_start + (image->dy * info->fix.line_length) + 
+		(image->dx * par->depth);
+
+	size = (image->width+7)/8 + 1;
+	size &= ~1;
+	size *= image->height;
+	size += 7;
+	size &= ~7;
+	mono_src_copy_imm_blit(image->width * par->depth, 
+			       image->height, info->fix.line_length, 
+			       size/4, par->blit_bpp,
+			       PAT_COPY_ROP, dst, (u32 *) image->data, 
+			       bg, fg, info);
+} 
+
+int i810fb_sync(struct fb_info *info)
+{
+	struct i810fb_par *par = info->par;
+	
+	if (!info->var.accel_flags || par->dev_flags & LOCKUP)
+		return 0;
+
+	return wait_for_engine_idle(info);
+}
+
+void i810fb_load_front(u32 offset, struct fb_info *info)
+{
+	struct i810fb_par *par = info->par;
+	u8 __iomem *mmio = par->mmio_start_virtual;
+
+	if (!info->var.accel_flags || par->dev_flags & LOCKUP)
+		i810_writel(DPLYBASE, mmio, par->fb.physical + offset);
+	else 
+		load_front(offset, info);
+}
+
+/**
+ * i810fb_init_ringbuffer - initialize the ringbuffer
+ * @par: pointer to i810fb_par structure
+ *
+ * DESCRIPTION:
+ * Initializes the ringbuffer by telling the device the
+ * size and location of the ringbuffer.  It also sets 
+ * the head and tail pointers = 0
+ */
+void i810fb_init_ringbuffer(struct fb_info *info)
+{
+	struct i810fb_par *par = info->par;
+	u32 tmp1, tmp2;
+	u8 __iomem *mmio = par->mmio_start_virtual;
+	
+	wait_for_engine_idle(info);
+	i810fb_iring_enable(par, OFF);
+	i810_writel(IRING, mmio, 0);
+	i810_writel(IRING + 4, mmio, 0);
+	par->cur_tail = 0;
+
+	tmp2 = i810_readl(IRING + 8, mmio) & ~RBUFFER_START_MASK; 
+	tmp1 = par->iring.physical;
+	i810_writel(IRING + 8, mmio, tmp2 | tmp1);
+
+	tmp1 = i810_readl(IRING + 12, mmio);
+	tmp1 &= ~RBUFFER_SIZE_MASK;
+	tmp2 = (par->iring.size - I810_PAGESIZE) & RBUFFER_SIZE_MASK;
+	i810_writel(IRING + 12, mmio, tmp1 | tmp2);
+	i810fb_iring_enable(par, ON);
+}
diff --git a/drivers/video/fbdev/i810/i810_dvt.c b/drivers/video/fbdev/i810/i810_dvt.c
new file mode 100644
index 000000000..2082b5c92
--- /dev/null
+++ b/drivers/video/fbdev/i810/i810_dvt.c
@@ -0,0 +1,313 @@
+/*-*- linux-c -*-
+ *  linux/drivers/video/i810_dvt.c -- Intel 810 Discrete Video Timings (Intel)
+ *
+ *      Copyright (C) 2001 Antonino Daplas<adaplas@pol.net>
+ *      All Rights Reserved      
+ *
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License. See the file COPYING in the main directory of this archive for
+ *  more details.
+ */
+
+#include <linux/kernel.h>
+
+#include "i810_regs.h"
+#include "i810.h"
+#include "i810_main.h"
+
+struct mode_registers std_modes[] = {
+	/* 640x480 @ 60Hz */
+	{ 25000, 0x0013, 0x0003, 0x40, 0x5F, 0x4F, 0x50, 0x82, 0x51, 0x9D,
+	  0x0B, 0x10, 0x40, 0xE9, 0x0B, 0xDF, 0x50, 0xE7, 0x04, 0x02,
+	  0x01, 0x01, 0x01, 0x00, 0x01, 0x22002000, 0x22004000, 0x22006000,
+	  0x22002000, 0x22004000, 0x22006000, 0xC0 }, 
+	  
+	/* 640x480 @ 70Hz */
+	{ 28000, 0x0053, 0x0010, 0x40, 0x61, 0x4F, 0x4F, 0x85, 0x52, 0x9A,
+	  0xF2, 0x10, 0x40, 0xE0, 0x03, 0xDF, 0x50, 0xDF, 0xF3, 0x01, 
+	  0x01, 0x01, 0x01, 0x00, 0x01, 0x22002000, 0x22004000, 0x22005000,
+          0x22002000, 0x22004000, 0x22005000, 0xC0 },
+          
+        /* 640x480 @ 72Hz */
+        { 31000, 0x0013, 0x0002, 0x40, 0x63, 0x4F, 0x4F, 0x87, 0x52, 0x97,
+          0x06, 0x0F, 0x40, 0xE8, 0x0B, 0xDF, 0x50, 0xDF, 0x07, 0x02, 
+          0x01, 0x01, 0x01, 0x00, 0x01, 0x22003000, 0x22005000, 0x22007000,
+          0x22003000, 0x22005000, 0x22007000, 0xC0 },
+          
+        /* 640x480 @ 75Hz */
+        { 31000, 0x0013, 0x0002, 0x40, 0x64, 0x4F, 0x4F, 0x88, 0x51, 0x99, 
+          0xF2, 0x10, 0x40, 0xE0, 0x03, 0xDF, 0x50, 0xDF, 0xF3, 0x01, 
+          0x01, 0x01, 0x01, 0x00, 0x01, 0x22003000, 0x22005000, 0x22007000, 
+          0x22003000, 0x22005000, 0x22007000, 0xC0 },
+          
+        /* 640x480 @ 85Hz */
+        { 36000, 0x0010, 0x0001, 0x40, 0x63, 0x4F, 0x4F, 0x87, 0x56, 0x9D,
+          0xFB, 0x10, 0x40, 0xE0, 0x03, 0xDF, 0x50, 0xDF, 0xFC, 0x01,
+          0x01, 0x01, 0x01, 0x00, 0x01, 0x22003000, 0x22005000, 0x22107000,
+          0x22003000, 0x22005000, 0x22107000, 0xC0 },
+          
+        /* 800x600 @ 56Hz */
+        { 36000, 0x0010, 0x0001, 0x40, 0x7B, 0x63, 0x63, 0x9F, 0x66, 0x8F,
+          0x6F, 0x10, 0x40, 0x58, 0x0A, 0x57, 0xC8, 0x57, 0x70, 0x02, 
+          0x02, 0x02, 0x02, 0x00, 0x01, 0x22003000, 0x22005000, 0x22107000,
+          0x22003000, 0x22005000, 0x22107000, 0x00 },
+          
+        /* 800x600 @ 60Hz */
+        { 40000, 0x0008, 0x0001, 0x30, 0x7F, 0x63, 0x63, 0x83, 0x68, 0x18, 
+          0x72, 0x10, 0x40, 0x58, 0x0C, 0x57, 0xC8, 0x57, 0x73, 0x02,
+          0x02, 0x02, 0x02, 0x00, 0x00, 0x22003000, 0x22006000, 0x22108000,
+          0x22003000, 0x22006000, 0x22108000, 0x00 },
+          
+        /* 800x600 @ 70Hz */
+        { 45000, 0x0054, 0x0015, 0x30, 0x7D, 0x63, 0x63, 0x81, 0x68, 0x12,
+          0x6f, 0x10, 0x40, 0x58, 0x0b, 0x57, 0x64, 0x57, 0x70, 0x02, 
+          0x02, 0x02, 0x02, 0x00, 0x00, 0x22004000, 0x22007000, 0x2210A000, 
+          0x22004000, 0x22007000, 0x2210A000, 0x00 },
+          
+        /* 800x600 @ 72Hz */
+        { 50000, 0x0017, 0x0004, 0x30, 0x7D, 0x63, 0x63, 0x81, 0x6A, 0x19,
+          0x98, 0x10, 0x40, 0x7C, 0x02, 0x57, 0xC8, 0x57, 0x99, 0x02, 
+          0x02, 0x02, 0x02, 0x00, 0x00, 0x22004000, 0x22007000, 0x2210A000,
+          0x22004000, 0x22007000, 0x2210A000, 0x00 }, 
+          
+        /* 800x600 @ 75Hz */
+        { 49000, 0x001F, 0x0006, 0x30, 0x7F, 0x63, 0x63, 0x83, 0x65, 0x0F,
+          0x6F, 0x10, 0x40, 0x58, 0x0B, 0x57, 0xC8, 0x57, 0x70, 0x02, 
+          0x02, 0x02, 0x02, 0x00, 0x00, 0x22004000, 0x22007000, 0x2210B000,
+          0x22004000, 0x22007000, 0x2210B000, 0x00 },
+          
+        /* 800x600 @ 85Hz */
+        { 56000, 0x0049, 0x000E, 0x30, 0x7E, 0x63, 0x63, 0x82, 0x67, 0x0F,
+          0x75, 0x10, 0x40, 0x58, 0x0B, 0x57, 0xC8, 0x57, 0x76, 0x02,
+          0x02, 0x02, 0x02, 0x00, 0x00, 0x22004000, 0x22108000, 0x2210b000, 
+          0x22004000, 0x22108000, 0x2210b000, 0x00 },
+          
+        /* 1024x768 @ 60Hz */
+        { 65000, 0x003F, 0x000A, 0x30, 0xA3, 0x7F, 0x7F, 0x87, 0x83, 0x94,
+          0x24, 0x10, 0x40, 0x02, 0x08, 0xFF, 0x80, 0xFF, 0x25, 0x03,
+          0x02, 0x03, 0x02, 0x00, 0x00, 0x22005000, 0x22109000, 0x2220D000,
+          0x22005000, 0x22109000, 0x2220D000, 0xC0 },
+          
+        /* 1024x768 @ 70Hz */
+	{ 75000, 0x0017, 0x0002, 0x30, 0xA1, 0x7F, 0x7F, 0x85, 0x82, 0x93,
+	  0x24, 0x10, 0x40, 0x02, 0x08, 0xFF, 0x80, 0xFF, 0x25, 0x03,
+	  0x02, 0x03, 0x02, 0x00, 0x00, 0x22005000, 0x2210A000, 0x2220F000,
+	  0x22005000, 0x2210A000, 0x2220F000, 0xC0 }, 
+	  
+	/* 1024x768 @ 75Hz */          
+	{ 78000, 0x0050, 0x0017, 0x20, 0x9F, 0x7F, 0x7F, 0x83, 0x81, 0x8D,
+	  0x1E, 0x10, 0x40, 0x00, 0x03, 0xFF, 0x80, 0xFF, 0x1F, 0x03,
+	  0x02, 0x03, 0x02, 0x00, 0x00, 0x22006000, 0x2210B000, 0x22210000,
+	  0x22006000, 0x2210B000, 0x22210000, 0x00 },
+	  
+	/* 1024x768 @ 85Hz */
+	{ 94000, 0x003D, 0x000E, 0x20, 0xA7, 0x7F, 0x7F, 0x8B, 0x85, 0x91,
+	  0x26, 0x10, 0x40, 0x00, 0x03, 0xFF, 0x80, 0xFF, 0x27, 0x03,
+	  0x02, 0x03, 0x02, 0x00, 0x00, 0x22007000, 0x2220E000, 0x22212000,
+	  0x22007000, 0x2220E000, 0x22212000, 0x00 },
+	  
+	/* 1152x864 @ 60Hz */ 
+	{ 80000, 0x0008, 0x0001, 0x20, 0xB3, 0x8F, 0x8F, 0x97, 0x93, 0x9f,
+	  0x87, 0x10, 0x40, 0x60, 0x03, 0x5F, 0x90, 0x5f, 0x88, 0x03,
+	  0x03, 0x03, 0x03, 0x00, 0x00, 0x2220C000, 0x22210000, 0x22415000,   
+	  0x2220C000, 0x22210000, 0x22415000, 0x00 },
+	  
+	/* 1152x864 @ 70Hz */
+	{ 96000, 0x000a, 0x0001, 0x20, 0xbb, 0x8F, 0x8F, 0x9f, 0x98, 0x87, 
+	  0x82, 0x10, 0x40, 0x60, 0x03, 0x5F, 0x90, 0x5F, 0x83, 0x03,
+	  0x03, 0x03, 0x03, 0x00, 0x00, 0x22107000, 0x22210000, 0x22415000,
+	  0x22107000, 0x22210000, 0x22415000, 0x00 },
+	  
+	/* 1152x864 @ 72Hz */
+	{ 99000, 0x001f, 0x0006, 0x20, 0xbb, 0x8F, 0x8F, 0x9f, 0x98, 0x87,
+	  0x83, 0x10, 0x40, 0x60, 0x03, 0x5F, 0x90, 0x5F, 0x84, 0x03,
+	  0x03, 0x03, 0x03, 0x00, 0x00, 0x22107000, 0x22210000, 0x22415000,
+	  0x22107000, 0x22210000, 0x22415000, 0x00 },
+	  
+	/* 1152x864 @ 75Hz */
+	{ 108000, 0x0010, 0x0002, 0x20, 0xC3, 0x8F, 0x8F, 0x87, 0x97, 0x07,
+	  0x82, 0x10, 0x40, 0x60, 0x03, 0x5F, 0x90, 0x5F, 0x83, 0x03, 
+	  0x03, 0x03, 0x03, 0x00, 0x01, 0x22107000, 0x22210000, 0x22415000,
+	  0x22107000, 0x22210000, 0x22415000, 0x00 },
+	  
+	/* 1152x864 @ 85Hz */
+	{ 121000, 0x006D, 0x0014, 0x20, 0xc0, 0x8F, 0x8F, 0x84, 0x97, 0x07,
+	  0x93, 0x10, 0x40, 0x60, 0x03, 0x5F, 0x90, 0x5F, 0x94, 0x03, 
+	  0x03, 0x03, 0x03, 0x00, 0x01, 0x2220C000, 0x22210000, 0x22415000,
+	  0x2220C000, 0x22210000, 0x22415000, 0x0 },
+	  
+	/* 1280x960 @ 60Hz */
+	{ 108000, 0x0010, 0x0002, 0x20, 0xDC, 0x9F, 0x9F, 0x80, 0xAB, 0x99,
+	  0xE6, 0x10, 0x40, 0xC0, 0x03, 0xBF, 0xA0, 0xBF, 0xE7, 0x03,
+	  0x03, 0x03, 0x03, 0x00, 0x01, 0x2210A000, 0x22210000, 0x22415000,
+	  0x2210A000, 0x22210000, 0x22415000, 0x00 },
+	  
+	/* 1280x960 @ 75Hz */
+	{ 129000, 0x0029, 0x0006, 0x20, 0xD3, 0x9F, 0x9F, 0x97, 0xaa, 0x1b,
+	  0xE8, 0x10, 0x40, 0xC0, 0x03, 0xBF, 0xA0, 0xBF, 0xE9, 0x03,
+	  0x03, 0x03, 0x03, 0x00, 0x01, 0x2210A000, 0x22210000, 0x2241B000,
+	  0x2210A000, 0x22210000, 0x2241B000, 0x00 },
+	  
+	/* 1280x960 @ 85Hz */
+	{ 148000, 0x0042, 0x0009, 0x20, 0xD3, 0x9F, 0x9F, 0x97, 0xA7, 0x1B,
+	  0xF1, 0x10, 0x40, 0xC0, 0x03, 0xBF, 0xA0, 0xBF, 0xF2, 0x03,
+	  0x03, 0x03, 0x03, 0x00, 0x01, 0x2210A000, 0x22220000, 0x2241D000,       
+	  0x2210A000, 0x22220000, 0x2241D000, 0x00 },
+	  
+	/* 1600x1200 @ 60Hz */
+	{ 162000, 0x0019, 0x0006, 0x10, 0x09, 0xC7, 0xC7, 0x8D, 0xcf, 0x07,
+	  0xE0, 0x10, 0x40, 0xB0, 0x03, 0xAF, 0xC8, 0xAF, 0xE1, 0x04, 
+	  0x04, 0x04, 0x04, 0x01, 0x00, 0x2210b000, 0x22416000, 0x44419000,
+	  0x2210b000, 0x22416000, 0x44419000, 0x00 },
+	  
+	/* 1600x1200 @ 65 Hz */
+	{ 175000, 0x005d, 0x0018, 0x10, 0x09, 0xC7, 0xC7, 0x8D, 0xcf, 0x07,
+	  0xE0, 0x10, 0x40, 0xB0, 0x03, 0xAF, 0xC8, 0xAF, 0xE1, 0x04, 
+	  0x04, 0x04, 0x04, 0x01, 0x00, 0x2210c000, 0x22416000, 0x44419000,
+	  0x2210c000, 0x22416000, 0x44419000, 0x00 },
+	  
+	/* 1600x1200 @ 70 Hz */
+	{ 189000, 0x003D, 0x000e, 0x10, 0x09, 0xC7, 0xC7, 0x8d, 0xcf, 0x07,
+	  0xE0, 0x10, 0x40, 0xb0, 0x03, 0xAF, 0xC8, 0xaf, 0xE1, 0x04, 
+	  0x04, 0x04, 0x04, 0x01, 0x00, 0x2220e000, 0x22416000, 0x44419000,
+	  0x2220e000, 0x22416000, 0x44419000, 0x00 },
+	  
+ 	/* 1600x1200 @ 72 Hz */
+ 	{ 195000, 0x003f, 0x000e, 0x10, 0x0b, 0xC7, 0xC7, 0x8f, 0xd5, 0x0b,
+ 	  0xE1, 0x10, 0x40, 0xb0, 0x03, 0xAF, 0xC8, 0xaf, 0xe2, 0x04, 0x04,
+ 	  0x04, 0x04, 0x01, 0x00, 0x2220e000, 0x22416000, 0x44419000,
+ 	  0x2220e000, 0x22416000, 0x44419000, 0x00 }, 
+ 	  
+ 	/* 1600x1200 @ 75 Hz */
+ 	{ 202000, 0x0024, 0x0007, 0x10, 0x09, 0xC7, 0xC7, 0x8d, 0xcf, 0x07,
+ 	  0xE0, 0x10, 0x40, 0xb0, 0x03, 0xAF, 0xC8, 0xaf, 0xE1, 0x04, 0x04,
+ 	  0x04, 0x04, 0x01, 0x00, 0x2220e000, 0x22416000, 0x44419000,      
+ 	  0x2220e000, 0x22416000, 0x44419000,  0x00 },
+ 	  
+ 	/* 1600x1200 @ 85 Hz */
+	{ 229000, 0x0029, 0x0007, 0x10, 0x09, 0xC7, 0xC7, 0x8d, 0xcf, 0x07,
+	  0xE0, 0x10, 0x40, 0xb0, 0x03, 0xAF, 0xC8, 0xaf, 0xE1, 0x04, 0x04,
+	  0x04, 0x04, 0x01, 0x00, 0x22210000, 0x22416000, 0x0,
+	  0x22210000, 0x22416000, 0x0, 0x00 },
+};	 
+
+void round_off_xres(u32 *xres) 
+{
+	if (*xres <= 640)
+		*xres = 640;
+	else if (*xres <= 800)
+		*xres = 800;
+	else if (*xres <= 1024)
+		*xres = 1024;
+	else if (*xres <= 1152)
+		*xres = 1152;
+	else if (*xres <= 1280)
+		*xres = 1280;
+	else
+		*xres = 1600;
+}
+
+inline void round_off_yres(u32 *xres, u32 *yres)
+{
+	*yres = (*xres * 3) >> 2;
+}
+
+static int i810fb_find_best_mode(u32 xres, u32 yres, u32 pixclock)
+{ 
+	u32 diff = 0, diff_best = 0xFFFFFFFF, i = 0, i_best = 0; 
+	u8 hfl = (u8) ((xres >> 3) - 1);
+
+	for (i = 0; i < ARRAY_SIZE(std_modes); i++) { 
+		if (std_modes[i].cr01 == hfl) { 
+			if (std_modes[i].pixclock <= pixclock)
+				diff = pixclock - std_modes[i].pixclock;
+			if (diff < diff_best) {	 
+		    		i_best = i;
+		    		diff_best = diff;
+			}
+		}
+	}
+	return i_best;
+}
+
+void i810fb_encode_registers(const struct fb_var_screeninfo *var,
+			     struct i810fb_par *par, u32 xres, u32 yres)
+{
+	u32 i_best = i810fb_find_best_mode(xres, yres, par->regs.pixclock);
+
+	par->regs = std_modes[i_best];
+
+	/* overlay */
+	par->ovract = ((xres + var->right_margin + var->hsync_len + 
+			var->left_margin - 32) | ((xres - 32) << 16));
+}
+
+void i810fb_fill_var_timings(struct fb_var_screeninfo *var)
+{
+	u32 total, xres, yres;
+	u32 mode, pixclock;
+
+	xres = var->xres;
+	yres = var->yres;
+	
+	pixclock = 1000000000 / var->pixclock;
+	mode = i810fb_find_best_mode(xres, yres, pixclock);
+	
+	total = (std_modes[mode].cr00 | (std_modes[mode].cr35 & 1) << 8) + 3;
+	total <<= 3;
+	
+	var->pixclock = 1000000000 / std_modes[mode].pixclock;
+	var->right_margin = (std_modes[mode].cr04 << 3) - xres;
+	var->hsync_len = ((std_modes[mode].cr05 & 0x1F) -
+			 (std_modes[mode].cr04 & 0x1F)) << 3;
+	var->left_margin = (total - (xres + var->right_margin + 
+				     var->hsync_len));
+	var->sync = FB_SYNC_ON_GREEN;
+	if (~(std_modes[mode].msr & (1 << 6)))
+		var->sync |= FB_SYNC_HOR_HIGH_ACT;
+	if (~(std_modes[mode].msr & (1 << 7)))
+		var->sync |= FB_SYNC_VERT_HIGH_ACT;
+
+	total = (std_modes[mode].cr06 | (std_modes[mode].cr30 & 0xF)  << 8) + 2;
+	var->lower_margin = (std_modes[mode].cr10 |
+			    (std_modes[mode].cr32 & 0x0F) << 8) - yres;
+	var->vsync_len = (std_modes[mode].cr11 & 0x0F) -
+			 (var->lower_margin & 0x0F);
+	var->upper_margin = total - (yres + var->lower_margin + var->vsync_len);
+}
+
+u32 i810_get_watermark(const struct fb_var_screeninfo *var,
+		       struct i810fb_par *par)
+{
+	struct mode_registers *params = &par->regs;
+	u32 wmark = 0;
+	
+	if (par->mem_freq == 100) {
+		switch (var->bits_per_pixel) {
+		case 8:
+			wmark = params->bpp8_100;
+			break;
+		case 16:
+			wmark = params->bpp16_100;
+			break;
+		case 24:
+		case 32:
+			wmark = params->bpp24_100;
+		}
+	} else {					
+		switch (var->bits_per_pixel) {
+		case 8:
+			wmark = params->bpp8_133;
+			break;
+		case 16:
+			wmark = params->bpp16_133;
+			break;
+		case 24:
+		case 32:
+			wmark = params->bpp24_133;
+		}
+	}
+	return wmark;
+}	
+
diff --git a/drivers/video/fbdev/i810/i810_gtf.c b/drivers/video/fbdev/i810/i810_gtf.c
new file mode 100644
index 000000000..9743d51e7
--- /dev/null
+++ b/drivers/video/fbdev/i810/i810_gtf.c
@@ -0,0 +1,276 @@
+/*-*- linux-c -*-
+ *  linux/drivers/video/i810_main.h -- Intel 810 Non-discrete Video Timings 
+ *                                     (VESA GTF)
+ *
+ *      Copyright (C) 2001 Antonino Daplas<adaplas@pol.net>
+ *      All Rights Reserved      
+ *
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License. See the file COPYING in the main directory of this archive for
+ *  more details.
+ */
+#include <linux/kernel.h>
+
+#include "i810_regs.h"
+#include "i810.h"
+#include "i810_main.h"
+
+/*
+ * FIFO and Watermark tables - based almost wholly on i810_wmark.c in 
+ * XFree86 v4.03 by Precision Insight.  Slightly modified for integer 
+ * operation, instead of float
+ */
+
+struct wm_info {
+   u32 freq;
+   u32  wm;
+};
+
+static struct wm_info i810_wm_8_100[] = {
+	{ 15, 0x0070c000 },  { 19, 0x0070c000 },  { 25, 0x22003000 },
+	{ 28, 0x22003000 },  { 31, 0x22003000 },  { 36, 0x22007000 },
+	{ 40, 0x22007000 },  { 45, 0x22007000 },  { 49, 0x22008000 },
+	{ 50, 0x22008000 },  { 56, 0x22008000 },  { 65, 0x22008000 },
+	{ 75, 0x22008000 },  { 78, 0x22008000 },  { 80, 0x22008000 },
+	{ 94, 0x22008000 },  { 96, 0x22107000 },  { 99, 0x22107000 },
+	{ 108, 0x22107000 }, { 121, 0x22107000 }, { 128, 0x22107000 },
+	{ 132, 0x22109000 }, { 135, 0x22109000 }, { 157, 0x2210b000 },
+	{ 162, 0x2210b000 }, { 175, 0x2210b000 }, { 189, 0x2220e000 },
+	{ 195, 0x2220e000 }, { 202, 0x2220e000 }, { 204, 0x2220e000 },
+	{ 218, 0x2220f000 }, { 229, 0x22210000 }, { 234, 0x22210000 }, 
+};
+
+static struct wm_info i810_wm_16_100[] = {
+	{ 15, 0x0070c000 },  { 19, 0x0020c000 },  { 25, 0x22006000 },
+	{ 28, 0x22006000 },  { 31, 0x22007000 },  { 36, 0x22007000 },
+	{ 40, 0x22007000 },  { 45, 0x22007000 },  { 49, 0x22009000 },
+	{ 50, 0x22009000 },  { 56, 0x22108000 },  { 65, 0x2210e000 },
+	{ 75, 0x2210e000 },  { 78, 0x2210e000 },  { 80, 0x22210000 },
+	{ 94, 0x22210000 },  { 96, 0x22210000 },  { 99, 0x22210000 },
+	{ 108, 0x22210000 }, { 121, 0x22210000 }, { 128, 0x22210000 },
+	{ 132, 0x22314000 }, { 135, 0x22314000 }, { 157, 0x22415000 },
+	{ 162, 0x22416000 }, { 175, 0x22416000 }, { 189, 0x22416000 },
+	{ 195, 0x22416000 }, { 202, 0x22416000 }, { 204, 0x22416000 },
+	{ 218, 0x22416000 }, { 229, 0x22416000 },
+};
+
+static struct wm_info i810_wm_24_100[] = {
+	{ 15, 0x0020c000 },  { 19, 0x0040c000 },  { 25, 0x22009000 },
+	{ 28, 0x22009000 },  { 31, 0x2200a000 },  { 36, 0x2210c000 },
+	{ 40, 0x2210c000 },  { 45, 0x2210c000 },  { 49, 0x22111000 },
+	{ 50, 0x22111000 },  { 56, 0x22111000 },  { 65, 0x22214000 },
+	{ 75, 0x22214000 },  { 78, 0x22215000 },  { 80, 0x22216000 },
+	{ 94, 0x22218000 },  { 96, 0x22418000 },  { 99, 0x22418000 },
+	{ 108, 0x22418000 }, { 121, 0x22418000 }, { 128, 0x22419000 },
+	{ 132, 0x22519000 }, { 135, 0x4441d000 }, { 157, 0x44419000 },
+	{ 162, 0x44419000 }, { 175, 0x44419000 }, { 189, 0x44419000 },
+	{ 195, 0x44419000 }, { 202, 0x44419000 }, { 204, 0x44419000 },
+};
+
+static struct wm_info i810_wm_8_133[] = {
+	{ 15, 0x0070c000 },  { 19, 0x0070c000 },  { 25, 0x22003000 },
+	{ 28, 0x22003000 },  { 31, 0x22003000 },  { 36, 0x22007000 },
+	{ 40, 0x22007000 },  { 45, 0x22007000 },  { 49, 0x22008000 },
+	{ 50, 0x22008000 },  { 56, 0x22008000 },  { 65, 0x22008000 },
+	{ 75, 0x22008000 },  { 78, 0x22008000 },  { 80, 0x22008000 },
+	{ 94, 0x22008000 },  { 96, 0x22107000 },  { 99, 0x22107000 },
+	{ 108, 0x22107000 }, { 121, 0x22107000 }, { 128, 0x22107000 },
+	{ 132, 0x22109000 }, { 135, 0x22109000 }, { 157, 0x2210b000 },
+	{ 162, 0x2210b000 }, { 175, 0x2210b000 }, { 189, 0x2220e000 },
+	{ 195, 0x2220e000 }, { 202, 0x2220e000 }, { 204, 0x2220e000 },
+	{ 218, 0x2220f000 }, { 229, 0x22210000 }, { 234, 0x22210000 }, 
+};
+
+static struct wm_info i810_wm_16_133[] = {
+	{ 15, 0x0020c000 },  { 19, 0x0020c000 },  { 25, 0x22006000 },
+	{ 28, 0x22006000 },  { 31, 0x22007000 },  { 36, 0x22007000 },
+	{ 40, 0x22007000 },  { 45, 0x22007000 },  { 49, 0x22009000 },
+	{ 50, 0x22009000 },  { 56, 0x22108000 },  { 65, 0x2210e000 },
+	{ 75, 0x2210e000 },  { 78, 0x2210e000 },  { 80, 0x22210000 },
+	{ 94, 0x22210000 },  { 96, 0x22210000 },  { 99, 0x22210000 },
+	{ 108, 0x22210000 }, { 121, 0x22210000 }, { 128, 0x22210000 },
+	{ 132, 0x22314000 }, { 135, 0x22314000 }, { 157, 0x22415000 },
+	{ 162, 0x22416000 }, { 175, 0x22416000 }, { 189, 0x22416000 },
+	{ 195, 0x22416000 }, { 202, 0x22416000 }, { 204, 0x22416000 },
+	{ 218, 0x22416000 }, { 229, 0x22416000 },
+};
+
+static struct wm_info i810_wm_24_133[] = {
+	{ 15, 0x0020c000 },  { 19, 0x00408000 },  { 25, 0x22009000 },
+	{ 28, 0x22009000 },  { 31, 0x2200a000 },  { 36, 0x2210c000 },
+	{ 40, 0x2210c000 },  { 45, 0x2210c000 },  { 49, 0x22111000 },
+	{ 50, 0x22111000 },  { 56, 0x22111000 },  { 65, 0x22214000 },
+	{ 75, 0x22214000 },  { 78, 0x22215000 },  { 80, 0x22216000 },
+	{ 94, 0x22218000 },  { 96, 0x22418000 },  { 99, 0x22418000 },
+	{ 108, 0x22418000 }, { 121, 0x22418000 }, { 128, 0x22419000 },
+	{ 132, 0x22519000 }, { 135, 0x4441d000 }, { 157, 0x44419000 },
+	{ 162, 0x44419000 }, { 175, 0x44419000 }, { 189, 0x44419000 },
+	{ 195, 0x44419000 }, { 202, 0x44419000 }, { 204, 0x44419000 },
+};
+
+void round_off_xres(u32 *xres) { }
+void round_off_yres(u32 *xres, u32 *yres) { }
+
+/**
+ * i810fb_encode_registers - encode @var to hardware register values
+ * @var: pointer to var structure
+ * @par: pointer to hardware par structure
+ * 
+ * DESCRIPTION: 
+ * Timing values in @var will be converted to appropriate
+ * register values of @par.  
+ */
+void i810fb_encode_registers(const struct fb_var_screeninfo *var,
+			     struct i810fb_par *par, u32 xres, u32 yres)
+{
+	int n, blank_s, blank_e;
+	u8 __iomem *mmio = par->mmio_start_virtual;
+	u8 msr = 0;
+
+	/* Horizontal */
+	/* htotal */
+	n = ((xres + var->right_margin + var->hsync_len + 
+	      var->left_margin) >> 3) - 5;
+	par->regs.cr00 =  (u8) n;
+	par->regs.cr35 = (u8) ((n >> 8) & 1);
+	
+	/* xres */
+	par->regs.cr01 = (u8) ((xres >> 3) - 1);
+
+	/* hblank */
+	blank_e = (xres + var->right_margin + var->hsync_len + 
+		   var->left_margin) >> 3;
+	blank_e--;
+	blank_s = blank_e - 127;
+	if (blank_s < (xres >> 3))
+		blank_s = xres >> 3;
+	par->regs.cr02 = (u8) blank_s;
+	par->regs.cr03 = (u8) (blank_e & 0x1F);
+	par->regs.cr05 = (u8) ((blank_e & (1 << 5)) << 2);
+	par->regs.cr39 = (u8) ((blank_e >> 6) & 1);
+
+	/* hsync */
+	par->regs.cr04 = (u8) ((xres + var->right_margin) >> 3);
+	par->regs.cr05 |= (u8) (((xres + var->right_margin + 
+				  var->hsync_len) >> 3) & 0x1F);
+	
+       	/* Vertical */
+	/* vtotal */
+	n = yres + var->lower_margin + var->vsync_len + var->upper_margin - 2;
+	par->regs.cr06 = (u8) (n & 0xFF);
+	par->regs.cr30 = (u8) ((n >> 8) & 0x0F);
+
+	/* vsync */ 
+	n = yres + var->lower_margin;
+	par->regs.cr10 = (u8) (n & 0xFF);
+	par->regs.cr32 = (u8) ((n >> 8) & 0x0F);
+	par->regs.cr11 = i810_readb(CR11, mmio) & ~0x0F;
+	par->regs.cr11 |= (u8) ((yres + var->lower_margin + 
+				 var->vsync_len) & 0x0F);
+
+	/* yres */
+	n = yres - 1;
+	par->regs.cr12 = (u8) (n & 0xFF);
+	par->regs.cr31 = (u8) ((n >> 8) & 0x0F);
+	
+	/* vblank */
+	blank_e = yres + var->lower_margin + var->vsync_len + 
+		var->upper_margin;
+	blank_e--;
+	blank_s = blank_e - 127;
+	if (blank_s < yres)
+		blank_s = yres;
+	par->regs.cr15 = (u8) (blank_s & 0xFF);
+	par->regs.cr33 = (u8) ((blank_s >> 8) & 0x0F);
+	par->regs.cr16 = (u8) (blank_e & 0xFF);
+	par->regs.cr09 = 0;	
+
+	/* sync polarity */
+	if (!(var->sync & FB_SYNC_HOR_HIGH_ACT))
+		msr |= 1 << 6;
+	if (!(var->sync & FB_SYNC_VERT_HIGH_ACT))
+		msr |= 1 << 7;
+	par->regs.msr = msr;
+
+	/* interlace */
+	if (var->vmode & FB_VMODE_INTERLACED) 
+		par->interlace = (1 << 7) | ((u8) (var->yres >> 4));
+	else 
+		par->interlace = 0;
+
+	if (var->vmode & FB_VMODE_DOUBLE)
+		par->regs.cr09 |= 1 << 7;
+
+	/* overlay */
+	par->ovract = ((var->xres + var->right_margin + var->hsync_len + 
+			var->left_margin - 32) | ((var->xres - 32) << 16));
+}	
+
+void i810fb_fill_var_timings(struct fb_var_screeninfo *var) { }
+
+/**
+ * i810_get_watermark - gets watermark
+ * @var: pointer to fb_var_screeninfo
+ * @par: pointer to i810fb_par structure
+ *
+ * DESCRIPTION:
+ * Gets the required watermark based on 
+ * pixelclock and RAMBUS frequency.
+ * 
+ * RETURNS:
+ * watermark
+ */
+u32 i810_get_watermark(const struct fb_var_screeninfo *var,
+		       struct i810fb_par *par)
+{
+	struct wm_info *wmark = NULL;
+	u32 i, size = 0, pixclock, wm_best = 0, min, diff;
+
+	if (par->mem_freq == 100) {
+		switch (var->bits_per_pixel) { 
+		case 8:
+			wmark = i810_wm_8_100;
+			size = ARRAY_SIZE(i810_wm_8_100);
+			break;
+		case 16:
+			wmark = i810_wm_16_100;
+			size = ARRAY_SIZE(i810_wm_16_100);
+			break;
+		case 24:
+		case 32:
+			wmark = i810_wm_24_100;
+			size = ARRAY_SIZE(i810_wm_24_100);
+		}
+	} else {
+		switch(var->bits_per_pixel) {
+		case 8:
+			wmark = i810_wm_8_133;
+			size = ARRAY_SIZE(i810_wm_8_133);
+			break;
+		case 16:
+			wmark = i810_wm_16_133;
+			size = ARRAY_SIZE(i810_wm_16_133);
+			break;
+		case 24:
+		case 32:
+			wmark = i810_wm_24_133;
+			size = ARRAY_SIZE(i810_wm_24_133);
+		}
+	}
+
+	pixclock = 1000000/var->pixclock;
+	min = ~0;
+	for (i = 0; i < size; i++) {
+		if (pixclock <= wmark[i].freq) 
+			diff = wmark[i].freq - pixclock;
+		else 
+			diff = pixclock - wmark[i].freq;
+		if (diff < min) {
+			wm_best = wmark[i].wm;
+			min = diff;
+		}
+	}
+	return wm_best;		
+}	
+
diff --git a/drivers/video/fbdev/i810/i810_main.c b/drivers/video/fbdev/i810/i810_main.c
new file mode 100644
index 000000000..10b914a24
--- /dev/null
+++ b/drivers/video/fbdev/i810/i810_main.c
@@ -0,0 +1,2234 @@
+ /*-*- linux-c -*-
+ *  linux/drivers/video/i810_main.c -- Intel 810 frame buffer device
+ *
+ *      Copyright (C) 2001 Antonino Daplas<adaplas@pol.net>
+ *      All Rights Reserved
+ *
+ *      Contributors:
+ *         Michael Vogt <mvogt@acm.org> - added support for Intel 815 chipsets
+ *                                        and enabling the power-on state of
+ *                                        external VGA connectors for
+ *                                        secondary displays
+ *
+ *         Fredrik Andersson <krueger@shell.linux.se> - alpha testing of
+ *                                        the VESA GTF
+ *
+ *         Brad Corrion <bcorrion@web-co.com> - alpha testing of customized
+ *                                        timings support
+ *
+ *	The code framework is a modification of vfb.c by Geert Uytterhoeven.
+ *      DotClock and PLL calculations are partly based on i810_driver.c
+ *              in xfree86 v4.0.3 by Precision Insight.
+ *      Watermark calculation and tables are based on i810_wmark.c
+ *              in xfre86 v4.0.3 by Precision Insight.  Slight modifications
+ *              only to allow for integer operations instead of floating point.
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License. See the file COPYING in the main directory of this archive for
+ *  more details.
+ */
+
+#include <linux/aperture.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/pci_ids.h>
+#include <linux/resource.h>
+#include <linux/unistd.h>
+#include <linux/console.h>
+#include <linux/io.h>
+
+#include <asm/io.h>
+#include <asm/div64.h>
+#include <asm/page.h>
+
+#include "i810_regs.h"
+#include "i810.h"
+#include "i810_main.h"
+
+/*
+ * voffset - framebuffer offset in MiB from aperture start address.  In order for
+ * the driver to work with X, we must try to use memory holes left untouched by X. The
+ * following table lists where X's different surfaces start at.
+ *
+ * ---------------------------------------------
+ * :                :  64 MiB     : 32 MiB      :
+ * ----------------------------------------------
+ * : FrontBuffer    :   0         :  0          :
+ * : DepthBuffer    :   48        :  16         :
+ * : BackBuffer     :   56        :  24         :
+ * ----------------------------------------------
+ *
+ * So for chipsets with 64 MiB Aperture sizes, 32 MiB for v_offset is okay, allowing up to
+ * 15 + 1 MiB of Framebuffer memory.  For 32 MiB Aperture sizes, a v_offset of 8 MiB should
+ * work, allowing 7 + 1 MiB of Framebuffer memory.
+ * Note, the size of the hole may change depending on how much memory you allocate to X,
+ * and how the memory is split up between these surfaces.
+ *
+ * Note: Anytime the DepthBuffer or FrontBuffer is overlapped, X would still run but with
+ * DRI disabled.  But if the Frontbuffer is overlapped, X will fail to load.
+ *
+ * Experiment with v_offset to find out which works best for you.
+ */
+static u32 v_offset_default; /* For 32 MiB Aper size, 8 should be the default */
+static u32 voffset;
+
+static int i810fb_cursor(struct fb_info *info, struct fb_cursor *cursor);
+static int i810fb_init_pci(struct pci_dev *dev,
+			   const struct pci_device_id *entry);
+static void i810fb_remove_pci(struct pci_dev *dev);
+static int i810fb_resume(struct pci_dev *dev);
+static int i810fb_suspend(struct pci_dev *dev, pm_message_t state);
+
+/* Chipset Specific Functions */
+static int i810fb_set_par    (struct fb_info *info);
+static int i810fb_getcolreg  (u8 regno, u8 *red, u8 *green, u8 *blue,
+			      u8 *transp, struct fb_info *info);
+static int i810fb_setcolreg  (unsigned regno, unsigned red, unsigned green, unsigned blue,
+			      unsigned transp, struct fb_info *info);
+static int i810fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info);
+static int i810fb_blank      (int blank_mode, struct fb_info *info);
+
+/* Initialization */
+static void i810fb_release_resource       (struct fb_info *info, struct i810fb_par *par);
+
+/* PCI */
+static const char * const i810_pci_list[] = {
+	"Intel(R) 810 Framebuffer Device"                                 ,
+	"Intel(R) 810-DC100 Framebuffer Device"                           ,
+	"Intel(R) 810E Framebuffer Device"                                ,
+	"Intel(R) 815 (Internal Graphics 100Mhz FSB) Framebuffer Device"  ,
+	"Intel(R) 815 (Internal Graphics only) Framebuffer Device"        ,
+	"Intel(R) 815 (Internal Graphics with AGP) Framebuffer Device"
+};
+
+static const struct pci_device_id i810fb_pci_tbl[] = {
+	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG1,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
+	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1  },
+	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810E_IG,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
+	/* mvo: added i815 PCI-ID */
+	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_100,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
+	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_NOAGP,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
+	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_CGC,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
+	{ 0 },
+};
+
+static struct pci_driver i810fb_driver = {
+	.name     =	"i810fb",
+	.id_table =	i810fb_pci_tbl,
+	.probe    =	i810fb_init_pci,
+	.remove   =	i810fb_remove_pci,
+	.suspend  =     i810fb_suspend,
+	.resume   =     i810fb_resume,
+};
+
+static char *mode_option = NULL;
+static int vram = 4;
+static int bpp = 8;
+static bool mtrr;
+static bool accel;
+static int hsync1;
+static int hsync2;
+static int vsync1;
+static int vsync2;
+static int xres;
+static int yres;
+static int vyres;
+static bool sync;
+static bool extvga;
+static bool dcolor;
+static bool ddc3;
+
+/*------------------------------------------------------------*/
+
+/**************************************************************
+ *                Hardware Low Level Routines                 *
+ **************************************************************/
+
+/**
+ * i810_screen_off - turns off/on display
+ * @mmio: address of register space
+ * @mode: on or off
+ *
+ * DESCRIPTION:
+ * Blanks/unblanks the display
+ */
+static void i810_screen_off(u8 __iomem *mmio, u8 mode)
+{
+	u32 count = WAIT_COUNT;
+	u8 val;
+
+	i810_writeb(SR_INDEX, mmio, SR01);
+	val = i810_readb(SR_DATA, mmio);
+	val = (mode == OFF) ? val | SCR_OFF :
+		val & ~SCR_OFF;
+
+	while((i810_readw(DISP_SL, mmio) & 0xFFF) && count--);
+	i810_writeb(SR_INDEX, mmio, SR01);
+	i810_writeb(SR_DATA, mmio, val);
+}
+
+/**
+ * i810_dram_off - turns off/on dram refresh
+ * @mmio: address of register space
+ * @mode: on or off
+ *
+ * DESCRIPTION:
+ * Turns off DRAM refresh.  Must be off for only 2 vsyncs
+ * before data becomes corrupt
+ */
+static void i810_dram_off(u8 __iomem *mmio, u8 mode)
+{
+	u8 val;
+
+	val = i810_readb(DRAMCH, mmio);
+	val &= DRAM_OFF;
+	val = (mode == OFF) ? val : val | DRAM_ON;
+	i810_writeb(DRAMCH, mmio, val);
+}
+
+/**
+ * i810_protect_regs - allows rw/ro mode of certain VGA registers
+ * @mmio: address of register space
+ * @mode: protect/unprotect
+ *
+ * DESCRIPTION:
+ * The IBM VGA standard allows protection of certain VGA registers.
+ * This will  protect or unprotect them.
+ */
+static void i810_protect_regs(u8 __iomem *mmio, int mode)
+{
+	u8 reg;
+
+	i810_writeb(CR_INDEX_CGA, mmio, CR11);
+	reg = i810_readb(CR_DATA_CGA, mmio);
+	reg = (mode == OFF) ? reg & ~0x80 :
+		reg | 0x80;
+
+	i810_writeb(CR_INDEX_CGA, mmio, CR11);
+	i810_writeb(CR_DATA_CGA, mmio, reg);
+}
+
+/**
+ * i810_load_pll - loads values for the hardware PLL clock
+ * @par: pointer to i810fb_par structure
+ *
+ * DESCRIPTION:
+ * Loads the P, M, and N registers.
+ */
+static void i810_load_pll(struct i810fb_par *par)
+{
+	u32 tmp1, tmp2;
+	u8 __iomem *mmio = par->mmio_start_virtual;
+
+	tmp1 = par->regs.M | par->regs.N << 16;
+	tmp2 = i810_readl(DCLK_2D, mmio);
+	tmp2 &= ~MN_MASK;
+	i810_writel(DCLK_2D, mmio, tmp1 | tmp2);
+
+	tmp1 = par->regs.P;
+	tmp2 = i810_readl(DCLK_0DS, mmio);
+	tmp2 &= ~(P_OR << 16);
+	i810_writel(DCLK_0DS, mmio, (tmp1 << 16) | tmp2);
+
+	i810_writeb(MSR_WRITE, mmio, par->regs.msr | 0xC8 | 1);
+
+}
+
+/**
+ * i810_load_vga - load standard VGA registers
+ * @par: pointer to i810fb_par structure
+ *
+ * DESCRIPTION:
+ * Load values to VGA registers
+ */
+static void i810_load_vga(struct i810fb_par *par)
+{
+	u8 __iomem *mmio = par->mmio_start_virtual;
+
+	/* interlace */
+	i810_writeb(CR_INDEX_CGA, mmio, CR70);
+	i810_writeb(CR_DATA_CGA, mmio, par->interlace);
+
+	i810_writeb(CR_INDEX_CGA, mmio, CR00);
+	i810_writeb(CR_DATA_CGA, mmio, par->regs.cr00);
+	i810_writeb(CR_INDEX_CGA, mmio, CR01);
+	i810_writeb(CR_DATA_CGA, mmio, par->regs.cr01);
+	i810_writeb(CR_INDEX_CGA, mmio, CR02);
+	i810_writeb(CR_DATA_CGA, mmio, par->regs.cr02);
+	i810_writeb(CR_INDEX_CGA, mmio, CR03);
+	i810_writeb(CR_DATA_CGA, mmio, par->regs.cr03);
+	i810_writeb(CR_INDEX_CGA, mmio, CR04);
+	i810_writeb(CR_DATA_CGA, mmio, par->regs.cr04);
+	i810_writeb(CR_INDEX_CGA, mmio, CR05);
+	i810_writeb(CR_DATA_CGA, mmio, par->regs.cr05);
+	i810_writeb(CR_INDEX_CGA, mmio, CR06);
+	i810_writeb(CR_DATA_CGA, mmio, par->regs.cr06);
+	i810_writeb(CR_INDEX_CGA, mmio, CR09);
+	i810_writeb(CR_DATA_CGA, mmio, par->regs.cr09);
+	i810_writeb(CR_INDEX_CGA, mmio, CR10);
+	i810_writeb(CR_DATA_CGA, mmio, par->regs.cr10);
+	i810_writeb(CR_INDEX_CGA, mmio, CR11);
+	i810_writeb(CR_DATA_CGA, mmio, par->regs.cr11);
+	i810_writeb(CR_INDEX_CGA, mmio, CR12);
+	i810_writeb(CR_DATA_CGA, mmio, par->regs.cr12);
+	i810_writeb(CR_INDEX_CGA, mmio, CR15);
+	i810_writeb(CR_DATA_CGA, mmio, par->regs.cr15);
+	i810_writeb(CR_INDEX_CGA, mmio, CR16);
+	i810_writeb(CR_DATA_CGA, mmio, par->regs.cr16);
+}
+
+/**
+ * i810_load_vgax - load extended VGA registers
+ * @par: pointer to i810fb_par structure
+ *
+ * DESCRIPTION:
+ * Load values to extended VGA registers
+ */
+static void i810_load_vgax(struct i810fb_par *par)
+{
+	u8 __iomem *mmio = par->mmio_start_virtual;
+
+	i810_writeb(CR_INDEX_CGA, mmio, CR30);
+	i810_writeb(CR_DATA_CGA, mmio, par->regs.cr30);
+	i810_writeb(CR_INDEX_CGA, mmio, CR31);
+	i810_writeb(CR_DATA_CGA, mmio, par->regs.cr31);
+	i810_writeb(CR_INDEX_CGA, mmio, CR32);
+	i810_writeb(CR_DATA_CGA, mmio, par->regs.cr32);
+	i810_writeb(CR_INDEX_CGA, mmio, CR33);
+	i810_writeb(CR_DATA_CGA, mmio, par->regs.cr33);
+	i810_writeb(CR_INDEX_CGA, mmio, CR35);
+	i810_writeb(CR_DATA_CGA, mmio, par->regs.cr35);
+	i810_writeb(CR_INDEX_CGA, mmio, CR39);
+	i810_writeb(CR_DATA_CGA, mmio, par->regs.cr39);
+}
+
+/**
+ * i810_load_2d - load grahics registers
+ * @par: pointer to i810fb_par structure
+ *
+ * DESCRIPTION:
+ * Load values to graphics registers
+ */
+static void i810_load_2d(struct i810fb_par *par)
+{
+	u32 tmp;
+	u8 tmp8;
+	u8 __iomem *mmio = par->mmio_start_virtual;
+
+  	i810_writel(FW_BLC, mmio, par->watermark);
+	tmp = i810_readl(PIXCONF, mmio);
+	tmp |= 1 | 1 << 20;
+	i810_writel(PIXCONF, mmio, tmp);
+
+	i810_writel(OVRACT, mmio, par->ovract);
+
+	i810_writeb(GR_INDEX, mmio, GR10);
+	tmp8 = i810_readb(GR_DATA, mmio);
+	tmp8 |= 2;
+	i810_writeb(GR_INDEX, mmio, GR10);
+	i810_writeb(GR_DATA, mmio, tmp8);
+}
+
+/**
+ * i810_hires - enables high resolution mode
+ * @mmio: address of register space
+ */
+static void i810_hires(u8 __iomem *mmio)
+{
+	u8 val;
+
+	i810_writeb(CR_INDEX_CGA, mmio, CR80);
+	val = i810_readb(CR_DATA_CGA, mmio);
+	i810_writeb(CR_INDEX_CGA, mmio, CR80);
+	i810_writeb(CR_DATA_CGA, mmio, val | 1);
+	/* Stop LCD displays from flickering */
+	i810_writel(MEM_MODE, mmio, i810_readl(MEM_MODE, mmio) | 4);
+}
+
+/**
+ * i810_load_pitch - loads the characters per line of the display
+ * @par: pointer to i810fb_par structure
+ *
+ * DESCRIPTION:
+ * Loads the characters per line
+ */
+static void i810_load_pitch(struct i810fb_par *par)
+{
+	u32 tmp, pitch;
+	u8 val;
+	u8 __iomem *mmio = par->mmio_start_virtual;
+
+	pitch = par->pitch >> 3;
+	i810_writeb(SR_INDEX, mmio, SR01);
+	val = i810_readb(SR_DATA, mmio);
+	val &= 0xE0;
+	val |= 1 | 1 << 2;
+	i810_writeb(SR_INDEX, mmio, SR01);
+	i810_writeb(SR_DATA, mmio, val);
+
+	tmp = pitch & 0xFF;
+	i810_writeb(CR_INDEX_CGA, mmio, CR13);
+	i810_writeb(CR_DATA_CGA, mmio, (u8) tmp);
+
+	tmp = pitch >> 8;
+	i810_writeb(CR_INDEX_CGA, mmio, CR41);
+	val = i810_readb(CR_DATA_CGA, mmio) & ~0x0F;
+	i810_writeb(CR_INDEX_CGA, mmio, CR41);
+	i810_writeb(CR_DATA_CGA, mmio, (u8) tmp | val);
+}
+
+/**
+ * i810_load_color - loads the color depth of the display
+ * @par: pointer to i810fb_par structure
+ *
+ * DESCRIPTION:
+ * Loads the color depth of the display and the graphics engine
+ */
+static void i810_load_color(struct i810fb_par *par)
+{
+	u8 __iomem *mmio = par->mmio_start_virtual;
+	u32 reg1;
+	u16 reg2;
+
+	reg1 = i810_readl(PIXCONF, mmio) & ~(0xF0000 | 1 << 27);
+	reg2 = i810_readw(BLTCNTL, mmio) & ~0x30;
+
+	reg1 |= 0x8000 | par->pixconf;
+	reg2 |= par->bltcntl;
+	i810_writel(PIXCONF, mmio, reg1);
+	i810_writew(BLTCNTL, mmio, reg2);
+}
+
+/**
+ * i810_load_regs - loads all registers for the mode
+ * @par: pointer to i810fb_par structure
+ *
+ * DESCRIPTION:
+ * Loads registers
+ */
+static void i810_load_regs(struct i810fb_par *par)
+{
+	u8 __iomem *mmio = par->mmio_start_virtual;
+
+	i810_screen_off(mmio, OFF);
+	i810_protect_regs(mmio, OFF);
+	i810_dram_off(mmio, OFF);
+	i810_load_pll(par);
+	i810_load_vga(par);
+	i810_load_vgax(par);
+	i810_dram_off(mmio, ON);
+	i810_load_2d(par);
+	i810_hires(mmio);
+	i810_screen_off(mmio, ON);
+	i810_protect_regs(mmio, ON);
+	i810_load_color(par);
+	i810_load_pitch(par);
+}
+
+static void i810_write_dac(u8 regno, u8 red, u8 green, u8 blue,
+			  u8 __iomem *mmio)
+{
+	i810_writeb(CLUT_INDEX_WRITE, mmio, regno);
+	i810_writeb(CLUT_DATA, mmio, red);
+	i810_writeb(CLUT_DATA, mmio, green);
+	i810_writeb(CLUT_DATA, mmio, blue);
+}
+
+static void i810_read_dac(u8 regno, u8 *red, u8 *green, u8 *blue,
+			  u8 __iomem *mmio)
+{
+	i810_writeb(CLUT_INDEX_READ, mmio, regno);
+	*red = i810_readb(CLUT_DATA, mmio);
+	*green = i810_readb(CLUT_DATA, mmio);
+	*blue = i810_readb(CLUT_DATA, mmio);
+}
+
+/************************************************************
+ *                   VGA State Restore                      *
+ ************************************************************/
+static void i810_restore_pll(struct i810fb_par *par)
+{
+	u32 tmp1, tmp2;
+	u8 __iomem *mmio = par->mmio_start_virtual;
+
+	tmp1 = par->hw_state.dclk_2d;
+	tmp2 = i810_readl(DCLK_2D, mmio);
+	tmp1 &= ~MN_MASK;
+	tmp2 &= MN_MASK;
+	i810_writel(DCLK_2D, mmio, tmp1 | tmp2);
+
+	tmp1 = par->hw_state.dclk_1d;
+	tmp2 = i810_readl(DCLK_1D, mmio);
+	tmp1 &= ~MN_MASK;
+	tmp2 &= MN_MASK;
+	i810_writel(DCLK_1D, mmio, tmp1 | tmp2);
+
+	i810_writel(DCLK_0DS, mmio, par->hw_state.dclk_0ds);
+}
+
+static void i810_restore_dac(struct i810fb_par *par)
+{
+	u32 tmp1, tmp2;
+	u8 __iomem *mmio = par->mmio_start_virtual;
+
+	tmp1 = par->hw_state.pixconf;
+	tmp2 = i810_readl(PIXCONF, mmio);
+	tmp1 &= DAC_BIT;
+	tmp2 &= ~DAC_BIT;
+	i810_writel(PIXCONF, mmio, tmp1 | tmp2);
+}
+
+static void i810_restore_vgax(struct i810fb_par *par)
+{
+	u8 i, j;
+	u8 __iomem *mmio = par->mmio_start_virtual;
+
+	for (i = 0; i < 4; i++) {
+		i810_writeb(CR_INDEX_CGA, mmio, CR30+i);
+		i810_writeb(CR_DATA_CGA, mmio, *(&(par->hw_state.cr30) + i));
+	}
+	i810_writeb(CR_INDEX_CGA, mmio, CR35);
+	i810_writeb(CR_DATA_CGA, mmio, par->hw_state.cr35);
+	i810_writeb(CR_INDEX_CGA, mmio, CR39);
+	i810_writeb(CR_DATA_CGA, mmio, par->hw_state.cr39);
+	i810_writeb(CR_INDEX_CGA, mmio, CR41);
+	i810_writeb(CR_DATA_CGA, mmio, par->hw_state.cr39);
+
+	/*restore interlace*/
+	i810_writeb(CR_INDEX_CGA, mmio, CR70);
+	i = par->hw_state.cr70;
+	i &= INTERLACE_BIT;
+	j = i810_readb(CR_DATA_CGA, mmio);
+	i810_writeb(CR_INDEX_CGA, mmio, CR70);
+	i810_writeb(CR_DATA_CGA, mmio, j | i);
+
+	i810_writeb(CR_INDEX_CGA, mmio, CR80);
+	i810_writeb(CR_DATA_CGA, mmio, par->hw_state.cr80);
+	i810_writeb(MSR_WRITE, mmio, par->hw_state.msr);
+	i810_writeb(SR_INDEX, mmio, SR01);
+	i = (par->hw_state.sr01) & ~0xE0 ;
+	j = i810_readb(SR_DATA, mmio) & 0xE0;
+	i810_writeb(SR_INDEX, mmio, SR01);
+	i810_writeb(SR_DATA, mmio, i | j);
+}
+
+static void i810_restore_vga(struct i810fb_par *par)
+{
+	u8 i;
+	u8 __iomem *mmio = par->mmio_start_virtual;
+
+	for (i = 0; i < 10; i++) {
+		i810_writeb(CR_INDEX_CGA, mmio, CR00 + i);
+		i810_writeb(CR_DATA_CGA, mmio, *((&par->hw_state.cr00) + i));
+	}
+	for (i = 0; i < 8; i++) {
+		i810_writeb(CR_INDEX_CGA, mmio, CR10 + i);
+		i810_writeb(CR_DATA_CGA, mmio, *((&par->hw_state.cr10) + i));
+	}
+}
+
+static void i810_restore_addr_map(struct i810fb_par *par)
+{
+	u8 tmp;
+	u8 __iomem *mmio = par->mmio_start_virtual;
+
+	i810_writeb(GR_INDEX, mmio, GR10);
+	tmp = i810_readb(GR_DATA, mmio);
+	tmp &= ADDR_MAP_MASK;
+	tmp |= par->hw_state.gr10;
+	i810_writeb(GR_INDEX, mmio, GR10);
+	i810_writeb(GR_DATA, mmio, tmp);
+}
+
+static void i810_restore_2d(struct i810fb_par *par)
+{
+	u32 tmp_long;
+	u16 tmp_word;
+	u8 __iomem *mmio = par->mmio_start_virtual;
+
+	tmp_word = i810_readw(BLTCNTL, mmio);
+	tmp_word &= ~(3 << 4);
+	tmp_word |= par->hw_state.bltcntl;
+	i810_writew(BLTCNTL, mmio, tmp_word);
+
+	i810_dram_off(mmio, OFF);
+	i810_writel(PIXCONF, mmio, par->hw_state.pixconf);
+	i810_dram_off(mmio, ON);
+
+	tmp_word = i810_readw(HWSTAM, mmio);
+	tmp_word &= 3 << 13;
+	tmp_word |= par->hw_state.hwstam;
+	i810_writew(HWSTAM, mmio, tmp_word);
+
+	tmp_long = i810_readl(FW_BLC, mmio);
+	tmp_long &= FW_BLC_MASK;
+	tmp_long |= par->hw_state.fw_blc;
+	i810_writel(FW_BLC, mmio, tmp_long);
+
+	i810_writel(HWS_PGA, mmio, par->hw_state.hws_pga);
+	i810_writew(IER, mmio, par->hw_state.ier);
+	i810_writew(IMR, mmio, par->hw_state.imr);
+	i810_writel(DPLYSTAS, mmio, par->hw_state.dplystas);
+}
+
+static void i810_restore_vga_state(struct i810fb_par *par)
+{
+	u8 __iomem *mmio = par->mmio_start_virtual;
+
+	i810_screen_off(mmio, OFF);
+	i810_protect_regs(mmio, OFF);
+	i810_dram_off(mmio, OFF);
+	i810_restore_pll(par);
+	i810_restore_dac(par);
+	i810_restore_vga(par);
+	i810_restore_vgax(par);
+	i810_restore_addr_map(par);
+	i810_dram_off(mmio, ON);
+	i810_restore_2d(par);
+	i810_screen_off(mmio, ON);
+	i810_protect_regs(mmio, ON);
+}
+
+/***********************************************************************
+ *                         VGA State Save                              *
+ ***********************************************************************/
+
+static void i810_save_vgax(struct i810fb_par *par)
+{
+	u8 i;
+	u8 __iomem *mmio = par->mmio_start_virtual;
+
+	for (i = 0; i < 4; i++) {
+		i810_writeb(CR_INDEX_CGA, mmio, CR30 + i);
+		*(&(par->hw_state.cr30) + i) = i810_readb(CR_DATA_CGA, mmio);
+	}
+	i810_writeb(CR_INDEX_CGA, mmio, CR35);
+	par->hw_state.cr35 = i810_readb(CR_DATA_CGA, mmio);
+	i810_writeb(CR_INDEX_CGA, mmio, CR39);
+	par->hw_state.cr39 = i810_readb(CR_DATA_CGA, mmio);
+	i810_writeb(CR_INDEX_CGA, mmio, CR41);
+	par->hw_state.cr41 = i810_readb(CR_DATA_CGA, mmio);
+	i810_writeb(CR_INDEX_CGA, mmio, CR70);
+	par->hw_state.cr70 = i810_readb(CR_DATA_CGA, mmio);
+	par->hw_state.msr = i810_readb(MSR_READ, mmio);
+	i810_writeb(CR_INDEX_CGA, mmio, CR80);
+	par->hw_state.cr80 = i810_readb(CR_DATA_CGA, mmio);
+	i810_writeb(SR_INDEX, mmio, SR01);
+	par->hw_state.sr01 = i810_readb(SR_DATA, mmio);
+}
+
+static void i810_save_vga(struct i810fb_par *par)
+{
+	u8 i;
+	u8 __iomem *mmio = par->mmio_start_virtual;
+
+	for (i = 0; i < 10; i++) {
+		i810_writeb(CR_INDEX_CGA, mmio, CR00 + i);
+		*((&par->hw_state.cr00) + i) = i810_readb(CR_DATA_CGA, mmio);
+	}
+	for (i = 0; i < 8; i++) {
+		i810_writeb(CR_INDEX_CGA, mmio, CR10 + i);
+		*((&par->hw_state.cr10) + i) = i810_readb(CR_DATA_CGA, mmio);
+	}
+}
+
+static void i810_save_2d(struct i810fb_par *par)
+{
+	u8 __iomem *mmio = par->mmio_start_virtual;
+
+	par->hw_state.dclk_2d = i810_readl(DCLK_2D, mmio);
+	par->hw_state.dclk_1d = i810_readl(DCLK_1D, mmio);
+	par->hw_state.dclk_0ds = i810_readl(DCLK_0DS, mmio);
+	par->hw_state.pixconf = i810_readl(PIXCONF, mmio);
+	par->hw_state.fw_blc = i810_readl(FW_BLC, mmio);
+	par->hw_state.bltcntl = i810_readw(BLTCNTL, mmio);
+	par->hw_state.hwstam = i810_readw(HWSTAM, mmio);
+	par->hw_state.hws_pga = i810_readl(HWS_PGA, mmio);
+	par->hw_state.ier = i810_readw(IER, mmio);
+	par->hw_state.imr = i810_readw(IMR, mmio);
+	par->hw_state.dplystas = i810_readl(DPLYSTAS, mmio);
+}
+
+static void i810_save_vga_state(struct i810fb_par *par)
+{
+	i810_save_vga(par);
+	i810_save_vgax(par);
+	i810_save_2d(par);
+}
+
+/************************************************************
+ *                    Helpers                               *
+ ************************************************************/
+/**
+ * get_line_length - calculates buffer pitch in bytes
+ * @par: pointer to i810fb_par structure
+ * @xres_virtual: virtual resolution of the frame
+ * @bpp: bits per pixel
+ *
+ * DESCRIPTION:
+ * Calculates buffer pitch in bytes.
+ */
+static u32 get_line_length(struct i810fb_par *par, int xres_virtual, int bpp)
+{
+   	u32 length;
+
+	length = xres_virtual*bpp;
+	length = (length+31)&-32;
+	length >>= 3;
+	return length;
+}
+
+/**
+ * i810_calc_dclk - calculates the P, M, and N values of a pixelclock value
+ * @freq: target pixelclock in picoseconds
+ * @m: where to write M register
+ * @n: where to write N register
+ * @p: where to write P register
+ *
+ * DESCRIPTION:
+ * Based on the formula Freq_actual = (4*M*Freq_ref)/(N^P)
+ * Repeatedly computes the Freq until the actual Freq is equal to
+ * the target Freq or until the loop count is zero.  In the latter
+ * case, the actual frequency nearest the target will be used.
+ */
+static void i810_calc_dclk(u32 freq, u32 *m, u32 *n, u32 *p)
+{
+	u32 m_reg, n_reg, p_divisor, n_target_max;
+	u32 m_target, n_target, p_target, n_best, m_best, mod;
+	u32 f_out, target_freq, diff = 0, mod_min, diff_min;
+
+	diff_min = mod_min = 0xFFFFFFFF;
+	n_best = m_best = m_target = f_out = 0;
+
+	target_freq =  freq;
+	n_target_max = 30;
+
+	/*
+	 * find P such that target freq is 16x reference freq (Hz).
+	 */
+	p_divisor = 1;
+	p_target = 0;
+	while(!((1000000 * p_divisor)/(16 * 24 * target_freq)) &&
+	      p_divisor <= 32) {
+		p_divisor <<= 1;
+		p_target++;
+	}
+
+	n_reg = m_reg = n_target = 3;
+	while (diff_min && mod_min && (n_target < n_target_max)) {
+		f_out = (p_divisor * n_reg * 1000000)/(4 * 24 * m_reg);
+		mod = (p_divisor * n_reg * 1000000) % (4 * 24 * m_reg);
+		m_target = m_reg;
+		n_target = n_reg;
+		if (f_out <= target_freq) {
+			n_reg++;
+			diff = target_freq - f_out;
+		} else {
+			m_reg++;
+			diff = f_out - target_freq;
+		}
+
+		if (diff_min > diff) {
+			diff_min = diff;
+			n_best = n_target;
+			m_best = m_target;
+		}
+
+		if (!diff && mod_min > mod) {
+			mod_min = mod;
+			n_best = n_target;
+			m_best = m_target;
+		}
+	}
+	if (m) *m = (m_best - 2) & 0x3FF;
+	if (n) *n = (n_best - 2) & 0x3FF;
+	if (p) *p = (p_target << 4);
+}
+
+/*************************************************************
+ *                Hardware Cursor Routines                   *
+ *************************************************************/
+
+/**
+ * i810_enable_cursor - show or hide the hardware cursor
+ * @mmio: address of register space
+ * @mode: show (1) or hide (0)
+ *
+ * Description:
+ * Shows or hides the hardware cursor
+ */
+static void i810_enable_cursor(u8 __iomem *mmio, int mode)
+{
+	u32 temp;
+
+	temp = i810_readl(PIXCONF, mmio);
+	temp = (mode == ON) ? temp | CURSOR_ENABLE_MASK :
+		temp & ~CURSOR_ENABLE_MASK;
+
+	i810_writel(PIXCONF, mmio, temp);
+}
+
+static void i810_reset_cursor_image(struct i810fb_par *par)
+{
+	u8 __iomem *addr = par->cursor_heap.virtual;
+	int i, j;
+
+	for (i = 64; i--; ) {
+		for (j = 0; j < 8; j++) {
+			i810_writeb(j, addr, 0xff);
+			i810_writeb(j+8, addr, 0x00);
+		}
+		addr +=16;
+	}
+}
+
+static void i810_load_cursor_image(int width, int height, u8 *data,
+				   struct i810fb_par *par)
+{
+	u8 __iomem *addr = par->cursor_heap.virtual;
+	int i, j, w = width/8;
+	int mod = width % 8, t_mask, d_mask;
+
+	t_mask = 0xff >> mod;
+	d_mask = ~(0xff >> mod);
+	for (i = height; i--; ) {
+		for (j = 0; j < w; j++) {
+			i810_writeb(j+0, addr, 0x00);
+			i810_writeb(j+8, addr, *data++);
+		}
+		if (mod) {
+			i810_writeb(j+0, addr, t_mask);
+			i810_writeb(j+8, addr, *data++ & d_mask);
+		}
+		addr += 16;
+	}
+}
+
+static void i810_load_cursor_colors(int fg, int bg, struct fb_info *info)
+{
+	struct i810fb_par *par = info->par;
+	u8 __iomem *mmio = par->mmio_start_virtual;
+	u8 red, green, blue, trans, temp;
+
+	i810fb_getcolreg(bg, &red, &green, &blue, &trans, info);
+
+	temp = i810_readb(PIXCONF1, mmio);
+	i810_writeb(PIXCONF1, mmio, temp | EXTENDED_PALETTE);
+
+	i810_write_dac(4, red, green, blue, mmio);
+
+	i810_writeb(PIXCONF1, mmio, temp);
+
+	i810fb_getcolreg(fg, &red, &green, &blue, &trans, info);
+	temp = i810_readb(PIXCONF1, mmio);
+	i810_writeb(PIXCONF1, mmio, temp | EXTENDED_PALETTE);
+
+	i810_write_dac(5, red, green, blue, mmio);
+
+	i810_writeb(PIXCONF1, mmio, temp);
+}
+
+/**
+ * i810_init_cursor - initializes the cursor
+ * @par: pointer to i810fb_par structure
+ *
+ * DESCRIPTION:
+ * Initializes the cursor registers
+ */
+static void i810_init_cursor(struct i810fb_par *par)
+{
+	u8 __iomem *mmio = par->mmio_start_virtual;
+
+	i810_enable_cursor(mmio, OFF);
+	i810_writel(CURBASE, mmio, par->cursor_heap.physical);
+	i810_writew(CURCNTR, mmio, COORD_ACTIVE | CURSOR_MODE_64_XOR);
+}
+
+/*********************************************************************
+ *                    Framebuffer hook helpers                       *
+ *********************************************************************/
+/**
+ * i810_round_off -  Round off values to capability of hardware
+ * @var: pointer to fb_var_screeninfo structure
+ *
+ * DESCRIPTION:
+ * @var contains user-defined information for the mode to be set.
+ * This will try modify those values to ones nearest the
+ * capability of the hardware
+ */
+static void i810_round_off(struct fb_var_screeninfo *var)
+{
+	u32 xres, yres, vxres, vyres;
+
+	/*
+	 *  Presently supports only these configurations
+	 */
+
+	xres = var->xres;
+	yres = var->yres;
+	vxres = var->xres_virtual;
+	vyres = var->yres_virtual;
+
+	var->bits_per_pixel += 7;
+	var->bits_per_pixel &= ~7;
+
+	if (var->bits_per_pixel < 8)
+		var->bits_per_pixel = 8;
+	if (var->bits_per_pixel > 32)
+		var->bits_per_pixel = 32;
+
+	round_off_xres(&xres);
+	if (xres < 40)
+		xres = 40;
+	if (xres > 2048)
+		xres = 2048;
+	xres = (xres + 7) & ~7;
+
+	if (vxres < xres)
+		vxres = xres;
+
+	round_off_yres(&xres, &yres);
+	if (yres < 1)
+		yres = 1;
+	if (yres >= 2048)
+		yres = 2048;
+
+	if (vyres < yres)
+		vyres = yres;
+
+	if (var->bits_per_pixel == 32)
+		var->accel_flags = 0;
+
+	/* round of horizontal timings to nearest 8 pixels */
+	var->left_margin = (var->left_margin + 4) & ~7;
+	var->right_margin = (var->right_margin + 4) & ~7;
+	var->hsync_len = (var->hsync_len + 4) & ~7;
+
+	if (var->vmode & FB_VMODE_INTERLACED) {
+		if (!((yres + var->upper_margin + var->vsync_len +
+		       var->lower_margin) & 1))
+			var->upper_margin++;
+	}
+
+	var->xres = xres;
+	var->yres = yres;
+	var->xres_virtual = vxres;
+	var->yres_virtual = vyres;
+}
+
+/**
+ * set_color_bitfields - sets rgba fields
+ * @var: pointer to fb_var_screeninfo
+ *
+ * DESCRIPTION:
+ * The length, offset and ordering  for each color field
+ * (red, green, blue)  will be set as specified
+ * by the hardware
+ */
+static void set_color_bitfields(struct fb_var_screeninfo *var)
+{
+	switch (var->bits_per_pixel) {
+	case 8:
+		var->red.offset = 0;
+		var->red.length = 8;
+		var->green.offset = 0;
+		var->green.length = 8;
+		var->blue.offset = 0;
+		var->blue.length = 8;
+		var->transp.offset = 0;
+		var->transp.length = 0;
+		break;
+	case 16:
+		var->green.length = (var->green.length == 5) ? 5 : 6;
+		var->red.length = 5;
+		var->blue.length = 5;
+		var->transp.length = 6 - var->green.length;
+		var->blue.offset = 0;
+		var->green.offset = 5;
+		var->red.offset = 5 + var->green.length;
+		var->transp.offset =  (5 + var->red.offset) & 15;
+		break;
+	case 24:	/* RGB 888   */
+	case 32:	/* RGBA 8888 */
+		var->red.offset = 16;
+		var->red.length = 8;
+		var->green.offset = 8;
+		var->green.length = 8;
+		var->blue.offset = 0;
+		var->blue.length = 8;
+		var->transp.length = var->bits_per_pixel - 24;
+		var->transp.offset = (var->transp.length) ? 24 : 0;
+		break;
+	}
+	var->red.msb_right = 0;
+	var->green.msb_right = 0;
+	var->blue.msb_right = 0;
+	var->transp.msb_right = 0;
+}
+
+/**
+ * i810_check_params - check if contents in var are valid
+ * @var: pointer to fb_var_screeninfo
+ * @info: pointer to fb_info
+ *
+ * DESCRIPTION:
+ * This will check if the framebuffer size is sufficient
+ * for the current mode and if the user's monitor has the
+ * required specifications to display the current mode.
+ */
+static int i810_check_params(struct fb_var_screeninfo *var,
+			     struct fb_info *info)
+{
+	struct i810fb_par *par = info->par;
+	int line_length, vidmem, mode_valid = 0, retval = 0;
+	u32 vyres = var->yres_virtual, vxres = var->xres_virtual;
+
+	/*
+	 *  Memory limit
+	 */
+	line_length = get_line_length(par, vxres, var->bits_per_pixel);
+	vidmem = line_length*vyres;
+
+	if (vidmem > par->fb.size) {
+		vyres = par->fb.size/line_length;
+		if (vyres < var->yres) {
+			vyres = info->var.yres;
+			vxres = par->fb.size/vyres;
+			vxres /= var->bits_per_pixel >> 3;
+			line_length = get_line_length(par, vxres,
+						      var->bits_per_pixel);
+			vidmem = line_length * info->var.yres;
+			if (vxres < var->xres) {
+				dev_info(&par->dev->dev, "required video memory, "
+				       "%d bytes, for %dx%d-%d (virtual) "
+				       "is out of range\n",
+				       vidmem, vxres, vyres,
+				       var->bits_per_pixel);
+				return -ENOMEM;
+			}
+		}
+	}
+
+	var->xres_virtual = vxres;
+	var->yres_virtual = vyres;
+
+	/*
+	 * Monitor limit
+	 */
+	switch (var->bits_per_pixel) {
+	case 8:
+		info->monspecs.dclkmax = 234000000;
+		break;
+	case 16:
+		info->monspecs.dclkmax = 229000000;
+		break;
+	case 24:
+	case 32:
+		info->monspecs.dclkmax = 204000000;
+		break;
+	}
+
+	info->monspecs.dclkmin = 15000000;
+
+	if (!fb_validate_mode(var, info))
+		mode_valid = 1;
+
+#ifdef CONFIG_FB_I810_I2C
+	if (!mode_valid && info->monspecs.gtf &&
+	    !fb_get_mode(FB_MAXTIMINGS, 0, var, info))
+		mode_valid = 1;
+
+	if (!mode_valid && info->monspecs.modedb_len) {
+		const struct fb_videomode *mode;
+
+		mode = fb_find_best_mode(var, &info->modelist);
+		if (mode) {
+			fb_videomode_to_var(var, mode);
+			mode_valid = 1;
+		}
+	}
+#endif
+	if (!mode_valid && info->monspecs.modedb_len == 0) {
+		if (fb_get_mode(FB_MAXTIMINGS, 0, var, info)) {
+			int default_sync = (info->monspecs.hfmin-HFMIN)
+				|(info->monspecs.hfmax-HFMAX)
+				|(info->monspecs.vfmin-VFMIN)
+				|(info->monspecs.vfmax-VFMAX);
+			dev_err(&par->dev->dev, "invalid video mode%s\n",
+				default_sync ? "" : ". Specifying "
+				"vsyncN/hsyncN parameters may help");
+			retval = -EINVAL;
+		}
+	}
+
+	return retval;
+}
+
+/**
+ * encode_fix - fill up fb_fix_screeninfo structure
+ * @fix: pointer to fb_fix_screeninfo
+ * @info: pointer to fb_info
+ *
+ * DESCRIPTION:
+ * This will set up parameters that are unmodifiable by the user.
+ */
+static int encode_fix(struct fb_fix_screeninfo *fix, struct fb_info *info)
+{
+	struct i810fb_par *par = info->par;
+
+    	memset(fix, 0, sizeof(struct fb_fix_screeninfo));
+
+    	strcpy(fix->id, "I810");
+	mutex_lock(&info->mm_lock);
+    	fix->smem_start = par->fb.physical;
+    	fix->smem_len = par->fb.size;
+	mutex_unlock(&info->mm_lock);
+    	fix->type = FB_TYPE_PACKED_PIXELS;
+    	fix->type_aux = 0;
+	fix->xpanstep = 8;
+	fix->ypanstep = 1;
+
+    	switch (info->var.bits_per_pixel) {
+	case 8:
+	    	fix->visual = FB_VISUAL_PSEUDOCOLOR;
+	    	break;
+	case 16:
+	case 24:
+	case 32:
+		if (info->var.nonstd)
+			fix->visual = FB_VISUAL_DIRECTCOLOR;
+		else
+			fix->visual = FB_VISUAL_TRUECOLOR;
+	    	break;
+	default:
+		return -EINVAL;
+	}
+    	fix->ywrapstep = 0;
+	fix->line_length = par->pitch;
+	fix->mmio_start = par->mmio_start_phys;
+	fix->mmio_len = MMIO_SIZE;
+	fix->accel = FB_ACCEL_I810;
+
+	return 0;
+}
+
+/**
+ * decode_var - modify par according to contents of var
+ * @var: pointer to fb_var_screeninfo
+ * @par: pointer to i810fb_par
+ *
+ * DESCRIPTION:
+ * Based on the contents of @var, @par will be dynamically filled up.
+ * @par contains all information necessary to modify the hardware.
+*/
+static void decode_var(const struct fb_var_screeninfo *var,
+		       struct i810fb_par *par)
+{
+	u32 xres, yres, vxres, vyres;
+
+	xres = var->xres;
+	yres = var->yres;
+	vxres = var->xres_virtual;
+	vyres = var->yres_virtual;
+
+	switch (var->bits_per_pixel) {
+	case 8:
+		par->pixconf = PIXCONF8;
+		par->bltcntl = 0;
+		par->depth = 1;
+		par->blit_bpp = BPP8;
+		break;
+	case 16:
+		if (var->green.length == 5)
+			par->pixconf = PIXCONF15;
+		else
+			par->pixconf = PIXCONF16;
+		par->bltcntl = 16;
+		par->depth = 2;
+		par->blit_bpp = BPP16;
+		break;
+	case 24:
+		par->pixconf = PIXCONF24;
+		par->bltcntl = 32;
+		par->depth = 3;
+		par->blit_bpp = BPP24;
+		break;
+	case 32:
+		par->pixconf = PIXCONF32;
+		par->bltcntl = 0;
+		par->depth = 4;
+		par->blit_bpp = 3 << 24;
+		break;
+	}
+	if (var->nonstd && var->bits_per_pixel != 8)
+		par->pixconf |= 1 << 27;
+
+	i810_calc_dclk(var->pixclock, &par->regs.M,
+		       &par->regs.N, &par->regs.P);
+	i810fb_encode_registers(var, par, xres, yres);
+
+	par->watermark = i810_get_watermark(var, par);
+	par->pitch = get_line_length(par, vxres, var->bits_per_pixel);
+}
+
+/**
+ * i810fb_getcolreg - gets red, green and blue values of the hardware DAC
+ * @regno: DAC index
+ * @red: red
+ * @green: green
+ * @blue: blue
+ * @transp: transparency (alpha)
+ * @info: pointer to fb_info
+ *
+ * DESCRIPTION:
+ * Gets the red, green and blue values of the hardware DAC as pointed by @regno
+ * and writes them to @red, @green and @blue respectively
+ */
+static int i810fb_getcolreg(u8 regno, u8 *red, u8 *green, u8 *blue,
+			    u8 *transp, struct fb_info *info)
+{
+	struct i810fb_par *par = info->par;
+	u8 __iomem *mmio = par->mmio_start_virtual;
+	u8 temp;
+
+	if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
+		if ((info->var.green.length == 5 && regno > 31) ||
+		    (info->var.green.length == 6 && regno > 63))
+			return 1;
+	}
+
+	temp = i810_readb(PIXCONF1, mmio);
+	i810_writeb(PIXCONF1, mmio, temp & ~EXTENDED_PALETTE);
+
+	if (info->fix.visual == FB_VISUAL_DIRECTCOLOR &&
+	    info->var.green.length == 5)
+		i810_read_dac(regno * 8, red, green, blue, mmio);
+
+	else if (info->fix.visual == FB_VISUAL_DIRECTCOLOR &&
+		 info->var.green.length == 6) {
+		u8 tmp;
+
+		i810_read_dac(regno * 8, red, &tmp, blue, mmio);
+		i810_read_dac(regno * 4, &tmp, green, &tmp, mmio);
+	}
+	else
+		i810_read_dac(regno, red, green, blue, mmio);
+
+    	*transp = 0;
+	i810_writeb(PIXCONF1, mmio, temp);
+
+    	return 0;
+}
+
+/******************************************************************
+ *           Framebuffer device-specific hooks                    *
+ ******************************************************************/
+
+static int i810fb_open(struct fb_info *info, int user)
+{
+	struct i810fb_par *par = info->par;
+
+	mutex_lock(&par->open_lock);
+	if (par->use_count == 0) {
+		memset(&par->state, 0, sizeof(struct vgastate));
+		par->state.flags = VGA_SAVE_CMAP;
+		par->state.vgabase = par->mmio_start_virtual;
+		save_vga(&par->state);
+
+		i810_save_vga_state(par);
+	}
+
+	par->use_count++;
+	mutex_unlock(&par->open_lock);
+
+	return 0;
+}
+
+static int i810fb_release(struct fb_info *info, int user)
+{
+	struct i810fb_par *par = info->par;
+
+	mutex_lock(&par->open_lock);
+	if (par->use_count == 0) {
+		mutex_unlock(&par->open_lock);
+		return -EINVAL;
+	}
+
+	if (par->use_count == 1) {
+		i810_restore_vga_state(par);
+		restore_vga(&par->state);
+	}
+
+	par->use_count--;
+	mutex_unlock(&par->open_lock);
+
+	return 0;
+}
+
+
+static int i810fb_setcolreg(unsigned regno, unsigned red, unsigned green,
+			    unsigned blue, unsigned transp,
+			    struct fb_info *info)
+{
+	struct i810fb_par *par = info->par;
+	u8 __iomem *mmio = par->mmio_start_virtual;
+	u8 temp;
+	int i;
+
+ 	if (regno > 255) return 1;
+
+	if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
+		if ((info->var.green.length == 5 && regno > 31) ||
+		    (info->var.green.length == 6 && regno > 63))
+			return 1;
+	}
+
+	if (info->var.grayscale)
+		red = green = blue = (19595 * red + 38470 * green +
+				      7471 * blue) >> 16;
+
+	temp = i810_readb(PIXCONF1, mmio);
+	i810_writeb(PIXCONF1, mmio, temp & ~EXTENDED_PALETTE);
+
+	if (info->fix.visual == FB_VISUAL_DIRECTCOLOR &&
+	    info->var.green.length == 5) {
+		for (i = 0; i < 8; i++)
+			i810_write_dac((u8) (regno * 8) + i, (u8) red,
+				       (u8) green, (u8) blue, mmio);
+	} else if (info->fix.visual == FB_VISUAL_DIRECTCOLOR &&
+		 info->var.green.length == 6) {
+		u8 r, g, b;
+
+		if (regno < 32) {
+			for (i = 0; i < 8; i++)
+				i810_write_dac((u8) (regno * 8) + i,
+					       (u8) red, (u8) green,
+					       (u8) blue, mmio);
+		}
+		i810_read_dac((u8) (regno*4), &r, &g, &b, mmio);
+		for (i = 0; i < 4; i++)
+			i810_write_dac((u8) (regno*4) + i, r, (u8) green,
+				       b, mmio);
+	} else if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR) {
+		i810_write_dac((u8) regno, (u8) red, (u8) green,
+			       (u8) blue, mmio);
+	}
+
+	i810_writeb(PIXCONF1, mmio, temp);
+
+	if (regno < 16) {
+		switch (info->var.bits_per_pixel) {
+		case 16:
+			if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
+				if (info->var.green.length == 5)
+					((u32 *)info->pseudo_palette)[regno] =
+						(regno << 10) | (regno << 5) |
+						regno;
+				else
+					((u32 *)info->pseudo_palette)[regno] =
+						(regno << 11) | (regno << 5) |
+						regno;
+			} else {
+				if (info->var.green.length == 5) {
+					/* RGB 555 */
+					((u32 *)info->pseudo_palette)[regno] =
+						((red & 0xf800) >> 1) |
+						((green & 0xf800) >> 6) |
+						((blue & 0xf800) >> 11);
+				} else {
+					/* RGB 565 */
+					((u32 *)info->pseudo_palette)[regno] =
+						(red & 0xf800) |
+						((green & 0xf800) >> 5) |
+						((blue & 0xf800) >> 11);
+				}
+			}
+			break;
+		case 24:	/* RGB 888 */
+		case 32:	/* RGBA 8888 */
+			if (info->fix.visual == FB_VISUAL_DIRECTCOLOR)
+				((u32 *)info->pseudo_palette)[regno] =
+					(regno << 16) | (regno << 8) |
+					regno;
+			else
+				((u32 *)info->pseudo_palette)[regno] =
+					((red & 0xff00) << 8) |
+					(green & 0xff00) |
+					((blue & 0xff00) >> 8);
+			break;
+		}
+	}
+	return 0;
+}
+
+static int i810fb_pan_display(struct fb_var_screeninfo *var,
+			      struct fb_info *info)
+{
+	struct i810fb_par *par = info->par;
+	u32 total;
+
+	total = var->xoffset * par->depth +
+		var->yoffset * info->fix.line_length;
+	i810fb_load_front(total, info);
+
+	return 0;
+}
+
+static int i810fb_blank (int blank_mode, struct fb_info *info)
+{
+	struct i810fb_par *par = info->par;
+	u8 __iomem *mmio = par->mmio_start_virtual;
+	int mode = 0, pwr, scr_off = 0;
+
+	pwr = i810_readl(PWR_CLKC, mmio);
+
+	switch (blank_mode) {
+	case FB_BLANK_UNBLANK:
+		mode = POWERON;
+		pwr |= 1;
+		scr_off = ON;
+		break;
+	case FB_BLANK_NORMAL:
+		mode = POWERON;
+		pwr |= 1;
+		scr_off = OFF;
+		break;
+	case FB_BLANK_VSYNC_SUSPEND:
+		mode = STANDBY;
+		pwr |= 1;
+		scr_off = OFF;
+		break;
+	case FB_BLANK_HSYNC_SUSPEND:
+		mode = SUSPEND;
+		pwr |= 1;
+		scr_off = OFF;
+		break;
+	case FB_BLANK_POWERDOWN:
+		mode = POWERDOWN;
+		pwr &= ~1;
+		scr_off = OFF;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	i810_screen_off(mmio, scr_off);
+	i810_writel(HVSYNC, mmio, mode);
+	i810_writel(PWR_CLKC, mmio, pwr);
+
+	return 0;
+}
+
+static int i810fb_set_par(struct fb_info *info)
+{
+	struct i810fb_par *par = info->par;
+
+	decode_var(&info->var, par);
+	i810_load_regs(par);
+	i810_init_cursor(par);
+	encode_fix(&info->fix, info);
+
+	if (info->var.accel_flags && !(par->dev_flags & LOCKUP)) {
+		info->flags = FBINFO_HWACCEL_YPAN |
+		FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
+		FBINFO_HWACCEL_IMAGEBLIT;
+		info->pixmap.scan_align = 2;
+	} else {
+		info->pixmap.scan_align = 1;
+		info->flags = FBINFO_HWACCEL_YPAN;
+	}
+	return 0;
+}
+
+static int i810fb_check_var(struct fb_var_screeninfo *var,
+			    struct fb_info *info)
+{
+	int err;
+
+	if (IS_DVT) {
+		var->vmode &= ~FB_VMODE_MASK;
+		var->vmode |= FB_VMODE_NONINTERLACED;
+	}
+	if (var->vmode & FB_VMODE_DOUBLE) {
+		var->vmode &= ~FB_VMODE_MASK;
+		var->vmode |= FB_VMODE_NONINTERLACED;
+	}
+
+	i810_round_off(var);
+	if ((err = i810_check_params(var, info)))
+		return err;
+
+	i810fb_fill_var_timings(var);
+	set_color_bitfields(var);
+	return 0;
+}
+
+static int i810fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
+{
+	struct i810fb_par *par = info->par;
+	u8 __iomem *mmio = par->mmio_start_virtual;
+
+	if (par->dev_flags & LOCKUP)
+		return -ENXIO;
+
+	if (cursor->image.width > 64 || cursor->image.height > 64)
+		return -ENXIO;
+
+	if ((i810_readl(CURBASE, mmio) & 0xf) != par->cursor_heap.physical) {
+		i810_init_cursor(par);
+		cursor->set |= FB_CUR_SETALL;
+	}
+
+	i810_enable_cursor(mmio, OFF);
+
+	if (cursor->set & FB_CUR_SETPOS) {
+		u32 tmp;
+
+		tmp = (cursor->image.dx - info->var.xoffset) & 0xffff;
+		tmp |= (cursor->image.dy - info->var.yoffset) << 16;
+		i810_writel(CURPOS, mmio, tmp);
+	}
+
+	if (cursor->set & FB_CUR_SETSIZE)
+		i810_reset_cursor_image(par);
+
+	if (cursor->set & FB_CUR_SETCMAP)
+		i810_load_cursor_colors(cursor->image.fg_color,
+					cursor->image.bg_color,
+					info);
+
+	if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
+		int size = ((cursor->image.width + 7) >> 3) *
+			cursor->image.height;
+		int i;
+		u8 *data = kmalloc(64 * 8, GFP_ATOMIC);
+
+		if (data == NULL)
+			return -ENOMEM;
+
+		switch (cursor->rop) {
+		case ROP_XOR:
+			for (i = 0; i < size; i++)
+				data[i] = cursor->image.data[i] ^ cursor->mask[i];
+			break;
+		case ROP_COPY:
+		default:
+			for (i = 0; i < size; i++)
+				data[i] = cursor->image.data[i] & cursor->mask[i];
+			break;
+		}
+
+		i810_load_cursor_image(cursor->image.width,
+				       cursor->image.height, data,
+				       par);
+		kfree(data);
+	}
+
+	if (cursor->enable)
+		i810_enable_cursor(mmio, ON);
+
+	return 0;
+}
+
+static const struct fb_ops i810fb_ops = {
+	.owner =             THIS_MODULE,
+	.fb_open =           i810fb_open,
+	.fb_release =        i810fb_release,
+	__FB_DEFAULT_IOMEM_OPS_RDWR,
+	.fb_check_var =      i810fb_check_var,
+	.fb_set_par =        i810fb_set_par,
+	.fb_setcolreg =      i810fb_setcolreg,
+	.fb_blank =          i810fb_blank,
+	.fb_pan_display =    i810fb_pan_display,
+	.fb_fillrect =       i810fb_fillrect,
+	.fb_copyarea =       i810fb_copyarea,
+	.fb_imageblit =      i810fb_imageblit,
+	.fb_cursor =         i810fb_cursor,
+	.fb_sync =           i810fb_sync,
+	__FB_DEFAULT_IOMEM_OPS_MMAP,
+};
+
+/***********************************************************************
+ *                         Power Management                            *
+ ***********************************************************************/
+static int i810fb_suspend(struct pci_dev *dev, pm_message_t mesg)
+{
+	struct fb_info *info = pci_get_drvdata(dev);
+	struct i810fb_par *par = info->par;
+
+	par->cur_state = mesg.event;
+
+	switch (mesg.event) {
+	case PM_EVENT_FREEZE:
+	case PM_EVENT_PRETHAW:
+		dev->dev.power.power_state = mesg;
+		return 0;
+	}
+
+	console_lock();
+	fb_set_suspend(info, 1);
+
+	if (info->fbops->fb_sync)
+		info->fbops->fb_sync(info);
+
+	i810fb_blank(FB_BLANK_POWERDOWN, info);
+	agp_unbind_memory(par->i810_gtt.i810_fb_memory);
+	agp_unbind_memory(par->i810_gtt.i810_cursor_memory);
+
+	pci_save_state(dev);
+	pci_disable_device(dev);
+	pci_set_power_state(dev, pci_choose_state(dev, mesg));
+	console_unlock();
+
+	return 0;
+}
+
+static int i810fb_resume(struct pci_dev *dev)
+{
+	struct fb_info *info = pci_get_drvdata(dev);
+	struct i810fb_par *par = info->par;
+	int cur_state = par->cur_state;
+
+	par->cur_state = PM_EVENT_ON;
+
+	if (cur_state == PM_EVENT_FREEZE) {
+		pci_set_power_state(dev, PCI_D0);
+		return 0;
+	}
+
+	console_lock();
+	pci_set_power_state(dev, PCI_D0);
+	pci_restore_state(dev);
+
+	if (pci_enable_device(dev))
+		goto fail;
+
+	pci_set_master(dev);
+	agp_bind_memory(par->i810_gtt.i810_fb_memory,
+			par->fb.offset);
+	agp_bind_memory(par->i810_gtt.i810_cursor_memory,
+			par->cursor_heap.offset);
+	i810fb_set_par(info);
+	fb_set_suspend (info, 0);
+	info->fbops->fb_blank(VESA_NO_BLANKING, info);
+fail:
+	console_unlock();
+	return 0;
+}
+/***********************************************************************
+ *                  AGP resource allocation                            *
+ ***********************************************************************/
+
+static void i810_fix_pointers(struct i810fb_par *par)
+{
+      	par->fb.physical = par->aperture.physical+(par->fb.offset << 12);
+	par->fb.virtual = par->aperture.virtual+(par->fb.offset << 12);
+	par->iring.physical = par->aperture.physical +
+		(par->iring.offset << 12);
+	par->iring.virtual = par->aperture.virtual +
+		(par->iring.offset << 12);
+	par->cursor_heap.virtual = par->aperture.virtual+
+		(par->cursor_heap.offset << 12);
+}
+
+static void i810_fix_offsets(struct i810fb_par *par)
+{
+	if (vram + 1 > par->aperture.size >> 20)
+		vram = (par->aperture.size >> 20) - 1;
+	if (v_offset_default > (par->aperture.size >> 20))
+		v_offset_default = (par->aperture.size >> 20);
+	if (vram + v_offset_default + 1 > par->aperture.size >> 20)
+		v_offset_default = (par->aperture.size >> 20) - (vram + 1);
+
+	par->fb.size = vram << 20;
+	par->fb.offset = v_offset_default << 20;
+	par->fb.offset >>= 12;
+
+	par->iring.offset = par->fb.offset + (par->fb.size >> 12);
+	par->iring.size = RINGBUFFER_SIZE;
+
+	par->cursor_heap.offset = par->iring.offset + (RINGBUFFER_SIZE >> 12);
+	par->cursor_heap.size = 4096;
+}
+
+static int i810_alloc_agp_mem(struct fb_info *info)
+{
+	struct i810fb_par *par = info->par;
+	int size;
+	struct agp_bridge_data *bridge;
+
+	i810_fix_offsets(par);
+	size = par->fb.size + par->iring.size;
+
+	if (!(bridge = agp_backend_acquire(par->dev))) {
+		dev_warn(&par->dev->dev, "cannot acquire agpgart\n");
+		return -ENODEV;
+	}
+	if (!(par->i810_gtt.i810_fb_memory =
+	      agp_allocate_memory(bridge, size >> 12, AGP_NORMAL_MEMORY))) {
+		dev_warn(&par->dev->dev, "can't allocate framebuffer "
+		       "memory\n");
+		agp_backend_release(bridge);
+		return -ENOMEM;
+	}
+	if (agp_bind_memory(par->i810_gtt.i810_fb_memory,
+			    par->fb.offset)) {
+		dev_warn(&par->dev->dev, "can't bind framebuffer memory\n");
+		agp_backend_release(bridge);
+		return -EBUSY;
+	}
+
+	if (!(par->i810_gtt.i810_cursor_memory =
+	      agp_allocate_memory(bridge, par->cursor_heap.size >> 12,
+				  AGP_PHYSICAL_MEMORY))) {
+		dev_warn(&par->dev->dev, "can't allocate "
+		       "cursor memory\n");
+		agp_backend_release(bridge);
+		return -ENOMEM;
+	}
+	if (agp_bind_memory(par->i810_gtt.i810_cursor_memory,
+			    par->cursor_heap.offset)) {
+		dev_warn(&par->dev->dev, "cannot bind cursor memory\n");
+		agp_backend_release(bridge);
+		return -EBUSY;
+	}
+
+	par->cursor_heap.physical = par->i810_gtt.i810_cursor_memory->physical;
+
+	i810_fix_pointers(par);
+
+	agp_backend_release(bridge);
+
+	return 0;
+}
+
+/***************************************************************
+ *                    Initialization                           *
+ ***************************************************************/
+
+/**
+ * i810_init_monspecs
+ * @info: pointer to device specific info structure
+ *
+ * DESCRIPTION:
+ * Sets the user monitor's horizontal and vertical
+ * frequency limits
+ */
+static void i810_init_monspecs(struct fb_info *info)
+{
+	if (!hsync1)
+		hsync1 = HFMIN;
+	if (!hsync2)
+		hsync2 = HFMAX;
+	if (!info->monspecs.hfmax)
+		info->monspecs.hfmax = hsync2;
+	if (!info->monspecs.hfmin)
+		info->monspecs.hfmin = hsync1;
+	if (hsync2 < hsync1)
+		info->monspecs.hfmin = hsync2;
+
+	if (!vsync1)
+		vsync1 = VFMIN;
+	if (!vsync2)
+		vsync2 = VFMAX;
+	if (IS_DVT && vsync1 < 60)
+		vsync1 = 60;
+	if (!info->monspecs.vfmax)
+		info->monspecs.vfmax = vsync2;
+	if (!info->monspecs.vfmin)
+		info->monspecs.vfmin = vsync1;
+	if (vsync2 < vsync1)
+		info->monspecs.vfmin = vsync2;
+}
+
+/**
+ * i810_init_defaults - initializes default values to use
+ * @par: pointer to i810fb_par structure
+ * @info: pointer to current fb_info structure
+ */
+static void i810_init_defaults(struct i810fb_par *par, struct fb_info *info)
+{
+	mutex_init(&par->open_lock);
+
+	if (voffset)
+		v_offset_default = voffset;
+	else if (par->aperture.size > 32 * 1024 * 1024)
+		v_offset_default = 16;
+	else
+		v_offset_default = 8;
+
+	if (!vram)
+		vram = 1;
+
+	if (accel)
+		par->dev_flags |= HAS_ACCELERATION;
+
+	if (sync)
+		par->dev_flags |= ALWAYS_SYNC;
+
+	par->ddc_num = (ddc3 ? 3 : 2);
+
+	if (bpp < 8)
+		bpp = 8;
+
+	par->i810fb_ops = i810fb_ops;
+
+	if (xres)
+		info->var.xres = xres;
+	else
+		info->var.xres = 640;
+
+	if (yres)
+		info->var.yres = yres;
+	else
+		info->var.yres = 480;
+
+	if (!vyres)
+		vyres = (vram << 20)/(info->var.xres*bpp >> 3);
+
+	info->var.yres_virtual = vyres;
+	info->var.bits_per_pixel = bpp;
+
+	if (dcolor)
+		info->var.nonstd = 1;
+
+	if (par->dev_flags & HAS_ACCELERATION)
+		info->var.accel_flags = 1;
+
+	i810_init_monspecs(info);
+}
+
+/**
+ * i810_init_device - initialize device
+ * @par: pointer to i810fb_par structure
+ */
+static void i810_init_device(struct i810fb_par *par)
+{
+	u8 reg;
+	u8 __iomem *mmio = par->mmio_start_virtual;
+
+	if (mtrr)
+		par->wc_cookie= arch_phys_wc_add((u32) par->aperture.physical,
+						 par->aperture.size);
+
+	i810_init_cursor(par);
+
+	/* mvo: enable external vga-connector (for laptops) */
+	if (extvga) {
+		i810_writel(HVSYNC, mmio, 0);
+		i810_writel(PWR_CLKC, mmio, 3);
+	}
+
+	pci_read_config_byte(par->dev, 0x50, &reg);
+	reg &= FREQ_MASK;
+	par->mem_freq = (reg) ? 133 : 100;
+
+}
+
+static int i810_allocate_pci_resource(struct i810fb_par *par,
+				      const struct pci_device_id *entry)
+{
+	int err;
+
+	if ((err = pci_enable_device(par->dev))) {
+		dev_err(&par->dev->dev, "cannot enable device\n");
+		return err;
+	}
+	par->res_flags |= PCI_DEVICE_ENABLED;
+
+	if (pci_resource_len(par->dev, 0) > 512 * 1024) {
+		par->aperture.physical = pci_resource_start(par->dev, 0);
+		par->aperture.size = pci_resource_len(par->dev, 0);
+		par->mmio_start_phys = pci_resource_start(par->dev, 1);
+	} else {
+		par->aperture.physical = pci_resource_start(par->dev, 1);
+		par->aperture.size = pci_resource_len(par->dev, 1);
+		par->mmio_start_phys = pci_resource_start(par->dev, 0);
+	}
+	if (!par->aperture.size) {
+		dev_warn(&par->dev->dev, "device is disabled\n");
+		return -ENOMEM;
+	}
+
+	if (!request_mem_region(par->aperture.physical,
+				par->aperture.size,
+				i810_pci_list[entry->driver_data])) {
+		dev_warn(&par->dev->dev, "cannot request framebuffer region\n");
+		return -ENODEV;
+	}
+	par->res_flags |= FRAMEBUFFER_REQ;
+
+	par->aperture.virtual = ioremap_wc(par->aperture.physical,
+					   par->aperture.size);
+	if (!par->aperture.virtual) {
+		dev_warn(&par->dev->dev, "cannot remap framebuffer region\n");
+		return -ENODEV;
+	}
+
+	if (!request_mem_region(par->mmio_start_phys,
+				MMIO_SIZE,
+				i810_pci_list[entry->driver_data])) {
+		dev_warn(&par->dev->dev, "cannot request mmio region\n");
+		return -ENODEV;
+	}
+	par->res_flags |= MMIO_REQ;
+
+	par->mmio_start_virtual = ioremap(par->mmio_start_phys,
+						  MMIO_SIZE);
+	if (!par->mmio_start_virtual) {
+		dev_warn(&par->dev->dev, "cannot remap mmio region\n");
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static void i810fb_find_init_mode(struct fb_info *info)
+{
+	struct fb_videomode mode;
+	struct fb_var_screeninfo var;
+	struct fb_monspecs *specs = &info->monspecs;
+	int found = 0;
+#ifdef CONFIG_FB_I810_I2C
+	int i;
+	int err = 1;
+	struct i810fb_par *par = info->par;
+#endif
+
+	INIT_LIST_HEAD(&info->modelist);
+	memset(&mode, 0, sizeof(struct fb_videomode));
+	var = info->var;
+#ifdef CONFIG_FB_I810_I2C
+	i810_create_i2c_busses(par);
+
+	for (i = 0; i < par->ddc_num + 1; i++) {
+		err = i810_probe_i2c_connector(info, &par->edid, i);
+		if (!err)
+			break;
+	}
+
+	if (!err)
+		dev_info(&par->dev->dev, "DDC probe successful\n");
+
+	fb_edid_to_monspecs(par->edid, specs);
+
+	if (specs->modedb == NULL)
+		dev_info(&par->dev->dev, "Unable to get Mode Database\n");
+
+	fb_videomode_to_modelist(specs->modedb, specs->modedb_len,
+				 &info->modelist);
+	if (specs->modedb != NULL) {
+		const struct fb_videomode *m;
+
+		if (xres && yres) {
+			if ((m = fb_find_best_mode(&var, &info->modelist))) {
+				mode = *m;
+				found  = 1;
+			}
+		}
+
+		if (!found) {
+			m = fb_find_best_display(&info->monspecs, &info->modelist);
+			mode = *m;
+			found = 1;
+		}
+
+		fb_videomode_to_var(&var, &mode);
+	}
+#endif
+	if (mode_option)
+		fb_find_mode(&var, info, mode_option, specs->modedb,
+			     specs->modedb_len, (found) ? &mode : NULL,
+			     info->var.bits_per_pixel);
+
+	info->var = var;
+	fb_destroy_modedb(specs->modedb);
+	specs->modedb = NULL;
+}
+
+#ifndef MODULE
+static int i810fb_setup(char *options)
+{
+	char *this_opt, *suffix = NULL;
+
+	if (!options || !*options)
+		return 0;
+
+	while ((this_opt = strsep(&options, ",")) != NULL) {
+		if (!strncmp(this_opt, "mtrr", 4))
+			mtrr = true;
+		else if (!strncmp(this_opt, "accel", 5))
+			accel = true;
+		else if (!strncmp(this_opt, "extvga", 6))
+			extvga = true;
+		else if (!strncmp(this_opt, "sync", 4))
+			sync = true;
+		else if (!strncmp(this_opt, "vram:", 5))
+			vram = (simple_strtoul(this_opt+5, NULL, 0));
+		else if (!strncmp(this_opt, "voffset:", 8))
+			voffset = (simple_strtoul(this_opt+8, NULL, 0));
+		else if (!strncmp(this_opt, "xres:", 5))
+			xres = simple_strtoul(this_opt+5, NULL, 0);
+		else if (!strncmp(this_opt, "yres:", 5))
+			yres = simple_strtoul(this_opt+5, NULL, 0);
+		else if (!strncmp(this_opt, "vyres:", 6))
+			vyres = simple_strtoul(this_opt+6, NULL, 0);
+		else if (!strncmp(this_opt, "bpp:", 4))
+			bpp = simple_strtoul(this_opt+4, NULL, 0);
+		else if (!strncmp(this_opt, "hsync1:", 7)) {
+			hsync1 = simple_strtoul(this_opt+7, &suffix, 0);
+			if (strncmp(suffix, "H", 1))
+				hsync1 *= 1000;
+		} else if (!strncmp(this_opt, "hsync2:", 7)) {
+			hsync2 = simple_strtoul(this_opt+7, &suffix, 0);
+			if (strncmp(suffix, "H", 1))
+				hsync2 *= 1000;
+		} else if (!strncmp(this_opt, "vsync1:", 7))
+			vsync1 = simple_strtoul(this_opt+7, NULL, 0);
+		else if (!strncmp(this_opt, "vsync2:", 7))
+			vsync2 = simple_strtoul(this_opt+7, NULL, 0);
+		else if (!strncmp(this_opt, "dcolor", 6))
+			dcolor = true;
+		else if (!strncmp(this_opt, "ddc3", 4))
+			ddc3 = true;
+		else
+			mode_option = this_opt;
+	}
+	return 0;
+}
+#endif
+
+static int i810fb_init_pci(struct pci_dev *dev,
+			   const struct pci_device_id *entry)
+{
+	struct fb_info    *info;
+	struct i810fb_par *par = NULL;
+	struct fb_videomode mode;
+	int err = -1, vfreq, hfreq, pixclock;
+
+	err = aperture_remove_conflicting_pci_devices(dev, "i810fb");
+	if (err)
+		return err;
+
+	info = framebuffer_alloc(sizeof(struct i810fb_par), &dev->dev);
+	if (!info)
+		return -ENOMEM;
+
+	par = info->par;
+	par->dev = dev;
+
+	if (!(info->pixmap.addr = kzalloc(8*1024, GFP_KERNEL))) {
+		i810fb_release_resource(info, par);
+		return -ENOMEM;
+	}
+	info->pixmap.size = 8*1024;
+	info->pixmap.buf_align = 8;
+	info->pixmap.access_align = 32;
+	info->pixmap.flags = FB_PIXMAP_SYSTEM;
+
+	if ((err = i810_allocate_pci_resource(par, entry))) {
+		i810fb_release_resource(info, par);
+		return err;
+	}
+
+	i810_init_defaults(par, info);
+
+	if ((err = i810_alloc_agp_mem(info))) {
+		i810fb_release_resource(info, par);
+		return err;
+	}
+
+	i810_init_device(par);
+
+	info->screen_base = par->fb.virtual;
+	info->fbops = &par->i810fb_ops;
+	info->pseudo_palette = par->pseudo_palette;
+	fb_alloc_cmap(&info->cmap, 256, 0);
+	i810fb_find_init_mode(info);
+
+	if ((err = info->fbops->fb_check_var(&info->var, info))) {
+		i810fb_release_resource(info, par);
+		return err;
+	}
+
+	fb_var_to_videomode(&mode, &info->var);
+	fb_add_videomode(&mode, &info->modelist);
+
+	i810fb_init_ringbuffer(info);
+	err = register_framebuffer(info);
+
+	if (err < 0) {
+    		i810fb_release_resource(info, par);
+		dev_warn(&par->dev->dev, "cannot register framebuffer device\n");
+    		return err;
+    	}
+
+	pci_set_drvdata(dev, info);
+	pixclock = 1000000000/(info->var.pixclock);
+	pixclock *= 1000;
+	hfreq = pixclock/(info->var.xres + info->var.left_margin +
+			  info->var.hsync_len + info->var.right_margin);
+	vfreq = hfreq/(info->var.yres + info->var.upper_margin +
+		       info->var.vsync_len + info->var.lower_margin);
+
+	dev_info(&par->dev->dev, "fb%d         : %s v%d.%d.%d%s\n"
+		"Video RAM   : %dK\n"
+		"Monitor     : H: %d-%d KHz V: %d-%d Hz\n"
+		"Mode        : %dx%d-%dbpp@%dHz\n",
+	       info->node,
+	       i810_pci_list[entry->driver_data],
+	       VERSION_MAJOR, VERSION_MINOR, VERSION_TEENIE, BRANCH_VERSION,
+	       (int) par->fb.size>>10, info->monspecs.hfmin/1000,
+	       info->monspecs.hfmax/1000, info->monspecs.vfmin,
+	       info->monspecs.vfmax, info->var.xres,
+	       info->var.yres, info->var.bits_per_pixel, vfreq);
+	return 0;
+}
+
+/***************************************************************
+ *                     De-initialization                        *
+ ***************************************************************/
+
+static void i810fb_release_resource(struct fb_info *info,
+				    struct i810fb_par *par)
+{
+	struct gtt_data *gtt = &par->i810_gtt;
+	arch_phys_wc_del(par->wc_cookie);
+
+	i810_delete_i2c_busses(par);
+
+	if (par->i810_gtt.i810_cursor_memory)
+		agp_free_memory(gtt->i810_cursor_memory);
+	if (par->i810_gtt.i810_fb_memory)
+		agp_free_memory(gtt->i810_fb_memory);
+
+	if (par->mmio_start_virtual)
+		iounmap(par->mmio_start_virtual);
+	if (par->aperture.virtual)
+		iounmap(par->aperture.virtual);
+	kfree(par->edid);
+	if (par->res_flags & FRAMEBUFFER_REQ)
+		release_mem_region(par->aperture.physical,
+				   par->aperture.size);
+	if (par->res_flags & MMIO_REQ)
+		release_mem_region(par->mmio_start_phys, MMIO_SIZE);
+
+	framebuffer_release(info);
+
+}
+
+static void i810fb_remove_pci(struct pci_dev *dev)
+{
+	struct fb_info *info = pci_get_drvdata(dev);
+	struct i810fb_par *par = info->par;
+
+	unregister_framebuffer(info);
+	i810fb_release_resource(info, par);
+	dev_info(&par->dev->dev, "unloaded i810 framebuffer device\n");
+}
+
+#ifndef MODULE
+static int i810fb_init(void)
+{
+	char *option = NULL;
+
+	if (fb_modesetting_disabled("i810fb"))
+		return -ENODEV;
+
+	if (fb_get_options("i810fb", &option))
+		return -ENODEV;
+	i810fb_setup(option);
+
+	return pci_register_driver(&i810fb_driver);
+}
+#endif
+
+/*********************************************************************
+ *                          Modularization                           *
+ *********************************************************************/
+
+#ifdef MODULE
+
+static int i810fb_init(void)
+{
+	if (fb_modesetting_disabled("i810fb"))
+		return -ENODEV;
+
+	hsync1 *= 1000;
+	hsync2 *= 1000;
+
+	return pci_register_driver(&i810fb_driver);
+}
+
+module_param(vram, int, 0);
+MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB"
+		 " (default=4)");
+module_param(voffset, int, 0);
+MODULE_PARM_DESC(voffset, "at what offset to place start of framebuffer "
+                 "memory (0 to maximum aperture size), in MiB (default = 48)");
+module_param(bpp, int, 0);
+MODULE_PARM_DESC(bpp, "Color depth for display in bits per pixel"
+		 " (default = 8)");
+module_param(xres, int, 0);
+MODULE_PARM_DESC(xres, "Horizontal resolution in pixels (default = 640)");
+module_param(yres, int, 0);
+MODULE_PARM_DESC(yres, "Vertical resolution in scanlines (default = 480)");
+module_param(vyres,int, 0);
+MODULE_PARM_DESC(vyres, "Virtual vertical resolution in scanlines"
+		 " (default = 480)");
+module_param(hsync1, int, 0);
+MODULE_PARM_DESC(hsync1, "Minimum horizontal frequency of monitor in KHz"
+		 " (default = 29)");
+module_param(hsync2, int, 0);
+MODULE_PARM_DESC(hsync2, "Maximum horizontal frequency of monitor in KHz"
+		 " (default = 30)");
+module_param(vsync1, int, 0);
+MODULE_PARM_DESC(vsync1, "Minimum vertical frequency of monitor in Hz"
+		 " (default = 50)");
+module_param(vsync2, int, 0);
+MODULE_PARM_DESC(vsync2, "Maximum vertical frequency of monitor in Hz"
+		 " (default = 60)");
+module_param(accel, bool, 0);
+MODULE_PARM_DESC(accel, "Use Acceleration (BLIT) engine (default = 0)");
+module_param(mtrr, bool, 0);
+MODULE_PARM_DESC(mtrr, "Use MTRR (default = 0)");
+module_param(extvga, bool, 0);
+MODULE_PARM_DESC(extvga, "Enable external VGA connector (default = 0)");
+module_param(sync, bool, 0);
+MODULE_PARM_DESC(sync, "wait for accel engine to finish drawing"
+		 " (default = 0)");
+module_param(dcolor, bool, 0);
+MODULE_PARM_DESC(dcolor, "use DirectColor visuals"
+		 " (default = 0 = TrueColor)");
+module_param(ddc3, bool, 0);
+MODULE_PARM_DESC(ddc3, "Probe DDC bus 3 (default = 0 = no)");
+module_param(mode_option, charp, 0);
+MODULE_PARM_DESC(mode_option, "Specify initial video mode");
+
+MODULE_AUTHOR("Tony A. Daplas");
+MODULE_DESCRIPTION("Framebuffer device for the Intel 810/815 and"
+		   " compatible cards");
+MODULE_LICENSE("GPL");
+
+static void __exit i810fb_exit(void)
+{
+	pci_unregister_driver(&i810fb_driver);
+}
+module_exit(i810fb_exit);
+
+#endif /* MODULE */
+
+module_init(i810fb_init);
diff --git a/drivers/video/fbdev/i810/i810_main.h b/drivers/video/fbdev/i810/i810_main.h
new file mode 100644
index 000000000..7bfaaad1d
--- /dev/null
+++ b/drivers/video/fbdev/i810/i810_main.h
@@ -0,0 +1,69 @@
+/*-*- linux-c -*-
+ *  linux/drivers/video/i810fb_main.h -- Intel 810 frame buffer device 
+ *                                       main header file
+ *
+ *      Copyright (C) 2001 Antonino Daplas<adaplas@pol.net>
+ *      All Rights Reserved      
+ *
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License. See the file COPYING in the main directory of this archive for
+ *  more details.
+ */
+
+#ifndef __I810_MAIN_H__
+#define __I810_MAIN_H__
+
+/* Video Timings */
+extern void round_off_xres         (u32 *xres);
+extern void round_off_yres         (u32 *xres, u32 *yres);
+extern u32 i810_get_watermark      (const struct fb_var_screeninfo *var,
+			            struct i810fb_par *par);
+extern void i810fb_encode_registers(const struct fb_var_screeninfo *var,
+				    struct i810fb_par *par, u32 xres, u32 yres);
+extern void i810fb_fill_var_timings(struct fb_var_screeninfo *var);
+				    
+/* Accelerated Functions */
+extern void i810fb_fillrect (struct fb_info *p, 
+			     const struct fb_fillrect *rect);
+extern void i810fb_copyarea (struct fb_info *p, 
+			     const struct fb_copyarea *region);
+extern void i810fb_imageblit(struct fb_info *p, const struct fb_image *image);
+extern int  i810fb_sync     (struct fb_info *p);
+
+extern void i810fb_init_ringbuffer(struct fb_info *info);
+extern void i810fb_load_front     (u32 offset, struct fb_info *info);
+
+#ifdef CONFIG_FB_I810_I2C
+/* I2C */
+extern int i810_probe_i2c_connector(struct fb_info *info, u8 **out_edid,
+				    int conn);
+extern void i810_create_i2c_busses(struct i810fb_par *par);
+extern void i810_delete_i2c_busses(struct i810fb_par *par);
+#else
+static inline int i810_probe_i2c_connector(struct fb_info *info, u8 **out_edid,
+				    int conn)
+{
+	return 1;
+}
+static inline void i810_create_i2c_busses(struct i810fb_par *par) { }
+static inline void i810_delete_i2c_busses(struct i810fb_par *par) { }
+#endif
+
+/* Conditionals */
+#ifdef CONFIG_X86
+static inline void flush_cache(void)
+{
+	asm volatile ("wbinvd":::"memory");
+}
+#else
+#define flush_cache() do { } while(0)
+#endif 
+
+#ifdef CONFIG_FB_I810_GTF
+#define IS_DVT (0)
+#else
+#define IS_DVT (1)
+#endif
+
+#endif /* __I810_MAIN_H__ */
diff --git a/drivers/video/fbdev/i810/i810_regs.h b/drivers/video/fbdev/i810/i810_regs.h
new file mode 100644
index 000000000..91c6bd9d0
--- /dev/null
+++ b/drivers/video/fbdev/i810/i810_regs.h
@@ -0,0 +1,275 @@
+/*-*- linux-c -*-
+ *  linux/drivers/video/i810_regs.h -- Intel 810/815 Register List
+ *
+ *      Copyright (C) 2001 Antonino Daplas<adaplas@pol.net>
+ *      All Rights Reserved      
+ *
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License. See the file COPYING in the main directory of this archive for
+ *  more details.
+ */
+
+
+/*
+ * Intel 810 Chipset Family PRM 15 3.1 
+ * GC Register Memory Address Map 
+ *
+ * Based on:
+ * Intel (R) 810 Chipset Family 
+ * Programmer s Reference Manual 
+ * November 1999 
+ * Revision 1.0 
+ * Order Number: 298026-001 R
+ *
+ * All GC registers are memory-mapped. In addition, the VGA and extended VGA registers 
+ * are I/O mapped. 
+ */
+ 
+#ifndef __I810_REGS_H__
+#define __I810_REGS_H__
+
+/*  Instruction and Interrupt Control Registers (01000h 02FFFh) */
+#define FENCE                 0x02000                
+#define PGTBL_CTL             0x02020 
+#define PGTBL_ER              0x02024               
+#define    LRING              0x02030
+#define    IRING              0x02040
+#define HWS_PGA               0x02080 
+#define IPEIR                 0x02088
+#define IPEHR                 0x0208C 
+#define INSTDONE              0x02090 
+#define NOPID                 0x02094
+#define HWSTAM                0x02098 
+#define IER                   0x020A0
+#define IIR                   0x020A4
+#define IMR                   0x020A8 
+#define ISR                   0x020AC 
+#define EIR                   0x020B0 
+#define EMR                   0x020B4 
+#define ESR                   0x020B8 
+#define INSTPM                0x020C0
+#define INSTPS                0x020C4 
+#define BBP_PTR               0x020C8 
+#define ABB_SRT               0x020CC
+#define ABB_END               0x020D0
+#define DMA_FADD              0x020D4 
+#define FW_BLC                0x020D8
+#define MEM_MODE              0x020DC        
+
+/*  Memory Control Registers (03000h 03FFFh) */
+#define DRT                   0x03000
+#define DRAMCL                0x03001
+#define DRAMCH                0x03002
+ 
+
+/* Span Cursor Registers (04000h 04FFFh) */
+#define UI_SC_CTL             0x04008 
+
+/* I/O Control Registers (05000h 05FFFh) */
+#define HVSYNC                0x05000 
+#define GPIOA                 0x05010
+#define GPIOB                 0x05014 
+#define GPIOC                 0x0501C
+
+/* Clock Control and Power Management Registers (06000h 06FFFh) */
+#define DCLK_0D               0x06000
+#define DCLK_1D               0x06004
+#define DCLK_2D               0x06008
+#define LCD_CLKD              0x0600C
+#define DCLK_0DS              0x06010
+#define PWR_CLKC              0x06014
+
+/* Graphics Translation Table Range Definition (10000h 1FFFFh) */
+#define GTT                   0x10000  
+
+/*  Overlay Registers (30000h 03FFFFh) */
+#define OVOADDR               0x30000
+#define DOVOSTA               0x30008
+#define GAMMA                 0x30010
+#define OBUF_0Y               0x30100
+#define OBUF_1Y               0x30104
+#define OBUF_0U               0x30108
+#define OBUF_0V               0x3010C
+#define OBUF_1U               0x30110
+#define OBUF_1V               0x30114 
+#define OVOSTRIDE             0x30118
+#define YRGB_VPH              0x3011C
+#define UV_VPH                0x30120
+#define HORZ_PH               0x30124
+#define INIT_PH               0x30128
+#define DWINPOS               0x3012C 
+#define DWINSZ                0x30130
+#define SWID                  0x30134
+#define SWIDQW                0x30138
+#define SHEIGHT               0x3013F
+#define YRGBSCALE             0x30140 
+#define UVSCALE               0x30144
+#define OVOCLRCO              0x30148
+#define OVOCLRC1              0x3014C
+#define DCLRKV                0x30150
+#define DLCRKM                0x30154
+#define SCLRKVH               0x30158
+#define SCLRKVL               0x3015C
+#define SCLRKM                0x30160
+#define OVOCONF               0x30164
+#define OVOCMD                0x30168
+#define AWINPOS               0x30170
+#define AWINZ                 0x30174
+
+/*  BLT Engine Status (40000h 4FFFFh) (Software Debug) */
+#define BR00                  0x40000
+#define BRO1                  0x40004
+#define BR02                  0x40008
+#define BR03                  0x4000C
+#define BR04                  0x40010
+#define BR05                  0x40014
+#define BR06                  0x40018
+#define BR07                  0x4001C
+#define BR08                  0x40020
+#define BR09                  0x40024
+#define BR10                  0x40028
+#define BR11                  0x4002C
+#define BR12                  0x40030
+#define BR13                  0x40034
+#define BR14                  0x40038
+#define BR15                  0x4003C
+#define BR16                  0x40040
+#define BR17                  0x40044
+#define BR18                  0x40048
+#define BR19                  0x4004C
+#define SSLADD                0x40074
+#define DSLH                  0x40078
+#define DSLRADD               0x4007C
+
+
+/* LCD/TV-Out and HW DVD Registers (60000h 6FFFFh) */
+/* LCD/TV-Out */
+#define HTOTAL                0x60000
+#define HBLANK                0x60004
+#define HSYNC                 0x60008
+#define VTOTAL                0x6000C
+#define VBLANK                0x60010
+#define VSYNC                 0x60014
+#define LCDTV_C               0x60018
+#define OVRACT                0x6001C
+#define BCLRPAT               0x60020
+
+/*  Display and Cursor Control Registers (70000h 7FFFFh) */
+#define DISP_SL               0x70000
+#define DISP_SLC              0x70004
+#define PIXCONF               0x70008
+#define PIXCONF1              0x70009
+#define BLTCNTL               0x7000C
+#define SWF                   0x70014
+#define DPLYBASE              0x70020
+#define DPLYSTAS              0x70024
+#define CURCNTR               0x70080
+#define CURBASE               0x70084
+#define CURPOS                0x70088
+
+
+/* VGA Registers */
+
+/* SMRAM Registers */
+#define SMRAM                 0x10
+
+/* Graphics Control Registers */
+#define GR_INDEX              0x3CE
+#define GR_DATA               0x3CF
+
+#define GR10                  0x10
+#define GR11                  0x11
+
+/* CRT Controller Registers */
+#define CR_INDEX_MDA          0x3B4
+#define CR_INDEX_CGA          0x3D4
+#define CR_DATA_MDA           0x3B5
+#define CR_DATA_CGA           0x3D5
+
+#define CR30                  0x30
+#define CR31                  0x31
+#define CR32                  0x32
+#define CR33                  0x33
+#define CR35                  0x35
+#define CR39                  0x39
+#define CR40                  0x40
+#define CR41                  0x41
+#define CR42                  0x42
+#define CR70                  0x70
+#define CR80                  0x80 
+#define CR81                  0x82
+
+/* Extended VGA Registers */
+
+/* General Control and Status Registers */
+#define ST00                  0x3C2
+#define ST01_MDA              0x3BA
+#define ST01_CGA              0x3DA
+#define FRC_READ              0x3CA
+#define FRC_WRITE_MDA         0x3BA
+#define FRC_WRITE_CGA         0x3DA
+#define MSR_READ              0x3CC
+#define MSR_WRITE             0x3C2
+
+/* Sequencer Registers */
+#define SR_INDEX              0x3C4
+#define SR_DATA               0x3C5
+
+#define SR01                  0x01
+#define SR02                  0x02
+#define SR03                  0x03
+#define SR04                  0x04
+#define SR07                  0x07
+
+/* Graphics Controller Registers */
+#define GR00                  0x00   
+#define GR01                  0x01
+#define GR02                  0x02
+#define GR03                  0x03
+#define GR04                  0x04
+#define GR05                  0x05
+#define GR06                  0x06
+#define GR07                  0x07
+#define GR08                  0x08  
+
+/* Attribute Controller Registers */
+#define ATTR_WRITE              0x3C0
+#define ATTR_READ               0x3C1
+
+/* VGA Color Palette Registers */
+
+/* CLUT */
+#define CLUT_DATA             0x3C9        /* DACDATA */
+#define CLUT_INDEX_READ       0x3C7        /* DACRX */
+#define CLUT_INDEX_WRITE      0x3C8        /* DACWX */
+#define DACMASK               0x3C6
+
+/* CRT Controller Registers */
+#define CR00                  0x00
+#define CR01                  0x01
+#define CR02                  0x02
+#define CR03                  0x03
+#define CR04                  0x04
+#define CR05                  0x05
+#define CR06                  0x06
+#define CR07                  0x07
+#define CR08                  0x08
+#define CR09                  0x09
+#define CR0A                  0x0A
+#define CR0B                  0x0B
+#define CR0C                  0x0C
+#define CR0D                  0x0D
+#define CR0E                  0x0E
+#define CR0F                  0x0F
+#define CR10                  0x10
+#define CR11                  0x11
+#define CR12                  0x12
+#define CR13                  0x13
+#define CR14                  0x14
+#define CR15                  0x15
+#define CR16                  0x16
+#define CR17                  0x17
+#define CR18                  0x18
+
+#endif /* __I810_REGS_H__ */
-- 
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