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au1200fb.c

/*
 * BRIEF MODULE DESCRIPTION
 *    Au1200 LCD Driver.
 *
 * Copyright 2004-2005 AMD
 * Author: AMD
 *
 * Based on:
 * linux/drivers/video/skeletonfb.c -- Skeleton for a frame buffer device
 *  Created 28 Dec 1997 by Geert Uytterhoeven
 *
 *  This program is free software; you can redistribute      it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the      License, or (at your
 *  option) any later version.
 *
 *  THIS  SOFTWARE  IS PROVIDED       ``AS      IS'' AND   ANY    EXPRESS OR IMPLIED
 *  WARRANTIES,     INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
 *  NO      EVENT  SHALL   THE AUTHOR  BE  LIABLE FOR ANY     DIRECT, INDIRECT,
 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 *  NOT LIMITED     TO, PROCUREMENT OF  SUBSTITUTE GOODS    OR SERVICES; LOSS OF
 *  USE, DATA,    OR PROFITS; OR    BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 *  ANY THEORY OF LIABILITY, WHETHER IN    CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *  You should have received a copy of the  GNU General Public License along
 *  with this program; if not, write  to the Free Software Foundation, Inc.,
 *  675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/ctype.h>
#include <linux/dma-mapping.h>

#include <asm/mach-au1x00/au1000.h>
#include "au1200fb.h"

#ifdef CONFIG_PM
#include <asm/mach-au1x00/au1xxx_pm.h>
#endif

#ifndef CONFIG_FB_AU1200_DEVS
#define CONFIG_FB_AU1200_DEVS 4
#endif

#define DRIVER_NAME "au1200fb"
#define DRIVER_DESC "LCD controller driver for AU1200 processors"

#define DEBUG 1

#define print_err(f, arg...) printk(KERN_ERR DRIVER_NAME ": " f "\n", ## arg)
#define print_warn(f, arg...) printk(KERN_WARNING DRIVER_NAME ": " f "\n", ## arg)
#define print_info(f, arg...) printk(KERN_INFO DRIVER_NAME ": " f "\n", ## arg)

#if DEBUG
#define print_dbg(f, arg...) printk(KERN_DEBUG __FILE__ ": " f "\n", ## arg)
#else
#define print_dbg(f, arg...) do {} while (0)
#endif


#define AU1200_LCD_FB_IOCTL 0x46FF

#define AU1200_LCD_SET_SCREEN 1
#define AU1200_LCD_GET_SCREEN 2
#define AU1200_LCD_SET_WINDOW 3
#define AU1200_LCD_GET_WINDOW 4
#define AU1200_LCD_SET_PANEL  5
#define AU1200_LCD_GET_PANEL  6

#define SCREEN_SIZE               (1<< 1)
#define SCREEN_BACKCOLOR    (1<< 2)
#define SCREEN_BRIGHTNESS   (1<< 3)
#define SCREEN_COLORKEY     (1<< 4)
#define SCREEN_MASK         (1<< 5)

struct au1200_lcd_global_regs_t {
      unsigned int flags;
      unsigned int xsize;
      unsigned int ysize;
      unsigned int backcolor;
      unsigned int brightness;
      unsigned int colorkey;
      unsigned int mask;
      unsigned int panel_choice;
      char panel_desc[80];

};

#define WIN_POSITION            (1<< 0)
#define WIN_ALPHA_COLOR         (1<< 1)
#define WIN_ALPHA_MODE          (1<< 2)
#define WIN_PRIORITY            (1<< 3)
#define WIN_CHANNEL             (1<< 4)
#define WIN_BUFFER_FORMAT       (1<< 5)
#define WIN_COLOR_ORDER         (1<< 6)
#define WIN_PIXEL_ORDER         (1<< 7)
#define WIN_SIZE                (1<< 8)
#define WIN_COLORKEY_MODE       (1<< 9)
#define WIN_DOUBLE_BUFFER_MODE  (1<< 10)
#define WIN_RAM_ARRAY_MODE      (1<< 11)
#define WIN_BUFFER_SCALE        (1<< 12)
#define WIN_ENABLE                  (1<< 13)

struct au1200_lcd_window_regs_t {
      unsigned int flags;
      unsigned int xpos;
      unsigned int ypos;
      unsigned int alpha_color;
      unsigned int alpha_mode;
      unsigned int priority;
      unsigned int channel;
      unsigned int buffer_format;
      unsigned int color_order;
      unsigned int pixel_order;
      unsigned int xsize;
      unsigned int ysize;
      unsigned int colorkey_mode;
      unsigned int double_buffer_mode;
      unsigned int ram_array_mode;
      unsigned int xscale;
      unsigned int yscale;
      unsigned int enable;
};


struct au1200_lcd_iodata_t {
      unsigned int subcmd;
      struct au1200_lcd_global_regs_t global;
      struct au1200_lcd_window_regs_t window;
};

#if defined(__BIG_ENDIAN)
#define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_11
#else
#define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_00
#endif
#define LCD_CONTROL_DEFAULT_SBPPF LCD_CONTROL_SBPPF_565

/* Private, per-framebuffer management information (independent of the panel itself) */
struct au1200fb_device {
      struct fb_info fb_info;             /* FB driver info record */

      int                           plane;
      unsigned char*          fb_mem;           /* FrameBuffer memory map */
      unsigned int            fb_len;
      dma_addr_t              fb_phys;
};

static struct au1200fb_device _au1200fb_devices[CONFIG_FB_AU1200_DEVS];
/********************************************************************/

/* LCD controller restrictions */
#define AU1200_LCD_MAX_XRES   1280
#define AU1200_LCD_MAX_YRES   1024
#define AU1200_LCD_MAX_BPP    32
#define AU1200_LCD_MAX_CLK    96000000 /* fixme: this needs to go away ? */
#define AU1200_LCD_NBR_PALETTE_ENTRIES 256

/* Default number of visible screen buffer to allocate */
#define AU1200FB_NBR_VIDEO_BUFFERS 1

/********************************************************************/

static struct au1200_lcd *lcd = (struct au1200_lcd *) AU1200_LCD_ADDR;
static int window_index = 2; /* default is zero */
static int panel_index = 2; /* default is zero */
static struct window_settings *win;
static struct panel_settings *panel;
static int noblanking = 1;
static int nohwcursor = 0;

struct window_settings {
      unsigned char name[64];
      uint32 mode_backcolor;
      uint32 mode_colorkey;
      uint32 mode_colorkeymsk;
      struct {
            int xres;
            int yres;
            int xpos;
            int ypos;
            uint32 mode_winctrl1; /* winctrl1[FRM,CCO,PO,PIPE] */
            uint32 mode_winenable;
      } w[4];
};

#if defined(__BIG_ENDIAN)
#define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_00
#else
#define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_01
#endif

extern int board_au1200fb_panel_init (void);
extern int board_au1200fb_panel_shutdown (void);

#ifdef CONFIG_PM
int au1200fb_pm_callback(au1xxx_power_dev_t *dev,
            au1xxx_request_t request, void *data);
au1xxx_power_dev_t *LCD_pm_dev;
#endif

/*
 * Default window configurations
 */
static struct window_settings windows[] = {
      { /* Index 0 */
            "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
            /* mode_backcolor */ 0x006600ff,
            /* mode_colorkey,msk*/ 0, 0,
            {
                  {
                  /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
                  /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
                        LCD_WINCTRL1_PO_16BPP,
                  /* mode_winenable*/ LCD_WINENABLE_WEN0,
                  },
                  {
                  /* xres, yres, xpos, ypos */ 100, 100, 100, 100,
                  /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
                        LCD_WINCTRL1_PO_16BPP |
                        LCD_WINCTRL1_PIPE,
                  /* mode_winenable*/ LCD_WINENABLE_WEN1,
                  },
                  {
                  /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
                  /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
                        LCD_WINCTRL1_PO_16BPP,
                  /* mode_winenable*/ 0,
                  },
                  {
                  /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
                  /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
                        LCD_WINCTRL1_PO_16BPP |
                        LCD_WINCTRL1_PIPE,
                  /* mode_winenable*/ 0,
                  },
            },
      },

      { /* Index 1 */
            "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
            /* mode_backcolor */ 0x006600ff,
            /* mode_colorkey,msk*/ 0, 0,
            {
                  {
                  /* xres, yres, xpos, ypos */ 320, 240, 5, 5,
                  /* mode_winctrl1 */ LCD_WINCTRL1_FRM_24BPP |
                        LCD_WINCTRL1_PO_00,
                  /* mode_winenable*/ LCD_WINENABLE_WEN0,
                  },
                  {
                  /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
                  /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565
                        | LCD_WINCTRL1_PO_16BPP,
                  /* mode_winenable*/ 0,
                  },
                  {
                  /* xres, yres, xpos, ypos */ 100, 100, 0, 0,
                  /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
                        LCD_WINCTRL1_PO_16BPP |
                        LCD_WINCTRL1_PIPE,
                  /* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/,
                  },
                  {
                  /* xres, yres, xpos, ypos */ 200, 25, 0, 0,
                  /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
                        LCD_WINCTRL1_PO_16BPP |
                        LCD_WINCTRL1_PIPE,
                  /* mode_winenable*/ 0,
                  },
            },
      },
      { /* Index 2 */
            "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
            /* mode_backcolor */ 0x006600ff,
            /* mode_colorkey,msk*/ 0, 0,
            {
                  {
                  /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
                  /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
                        LCD_WINCTRL1_PO_16BPP,
                  /* mode_winenable*/ LCD_WINENABLE_WEN0,
                  },
                  {
                  /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
                  /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
                        LCD_WINCTRL1_PO_16BPP,
                  /* mode_winenable*/ 0,
                  },
                  {
                  /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
                  /* mode_winctrl1 */ LCD_WINCTRL1_FRM_32BPP |
                        LCD_WINCTRL1_PO_00|LCD_WINCTRL1_PIPE,
                  /* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/,
                  },
                  {
                  /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
                  /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
                        LCD_WINCTRL1_PO_16BPP |
                        LCD_WINCTRL1_PIPE,
                  /* mode_winenable*/ 0,
                  },
            },
      },
      /* Need VGA 640 @ 24bpp, @ 32bpp */
      /* Need VGA 800 @ 24bpp, @ 32bpp */
      /* Need VGA 1024 @ 24bpp, @ 32bpp */
};

/*
 * Controller configurations for various panels.
 */

struct panel_settings
{
      const char name[25];          /* Full name <vendor>_<model> */

      struct      fb_monspecs monspecs;   /* FB monitor specs */

      /* panel timings */
      uint32 mode_screen;
      uint32 mode_horztiming;
      uint32 mode_verttiming;
      uint32 mode_clkcontrol;
      uint32 mode_pwmdiv;
      uint32 mode_pwmhi;
      uint32 mode_outmask;
      uint32 mode_fifoctrl;
      uint32 mode_toyclksrc;
      uint32 mode_backlight;
      uint32 mode_auxpll;
      int (*device_init)(void);
      int (*device_shutdown)(void);
#define Xres min_xres
#define Yres min_yres
      u32   min_xres;         /* Minimum horizontal resolution */
      u32   max_xres;         /* Maximum horizontal resolution */
      u32   min_yres;         /* Minimum vertical resolution */
      u32   max_yres;         /* Maximum vertical resolution */
};

/********************************************************************/
/* fixme: Maybe a modedb for the CRT ? otherwise panels should be as-is */

/* List of panels known to work with the AU1200 LCD controller.
 * To add a new panel, enter the same specifications as the
 * Generic_TFT one, and MAKE SURE that it doesn't conflicts
 * with the controller restrictions. Restrictions are:
 *
 * STN color panels: max_bpp <= 12
 * STN mono panels: max_bpp <= 4
 * TFT panels: max_bpp <= 16
 * max_xres <= 800
 * max_yres <= 600
 */
static struct panel_settings known_lcd_panels[] =
{
      [0] = { /* QVGA 320x240 H:33.3kHz V:110Hz */
            .name = "QVGA_320x240",
            .monspecs = {
                  .modedb = NULL,
                  .modedb_len = 0,
                  .hfmin = 30000,
                  .hfmax = 70000,
                  .vfmin = 60,
                  .vfmax = 60,
                  .dclkmin = 6000000,
                  .dclkmax = 28000000,
                  .input = FB_DISP_RGB,
            },
            .mode_screen            = LCD_SCREEN_SX_N(320) |
                  LCD_SCREEN_SY_N(240),
            .mode_horztiming  = 0x00c4623b,
            .mode_verttiming  = 0x00502814,
            .mode_clkcontrol  = 0x00020002, /* /4=24Mhz */
            .mode_pwmdiv            = 0x00000000,
            .mode_pwmhi       = 0x00000000,
            .mode_outmask     = 0x00FFFFFF,
            .mode_fifoctrl    = 0x2f2f2f2f,
            .mode_toyclksrc   = 0x00000004, /* AUXPLL directly */
            .mode_backlight   = 0x00000000,
            .mode_auxpll            = 8, /* 96MHz AUXPLL */
            .device_init            = NULL,
            .device_shutdown  = NULL,
            320, 320,
            240, 240,
      },

      [1] = { /* VGA 640x480 H:30.3kHz V:58Hz */
            .name = "VGA_640x480",
            .monspecs = {
                  .modedb = NULL,
                  .modedb_len = 0,
                  .hfmin = 30000,
                  .hfmax = 70000,
                  .vfmin = 60,
                  .vfmax = 60,
                  .dclkmin = 6000000,
                  .dclkmax = 28000000,
                  .input = FB_DISP_RGB,
            },
            .mode_screen            = 0x13f9df80,
            .mode_horztiming  = 0x003c5859,
            .mode_verttiming  = 0x00741201,
            .mode_clkcontrol  = 0x00020001, /* /4=24Mhz */
            .mode_pwmdiv            = 0x00000000,
            .mode_pwmhi       = 0x00000000,
            .mode_outmask     = 0x00FFFFFF,
            .mode_fifoctrl    = 0x2f2f2f2f,
            .mode_toyclksrc   = 0x00000004, /* AUXPLL directly */
            .mode_backlight   = 0x00000000,
            .mode_auxpll            = 8, /* 96MHz AUXPLL */
            .device_init            = NULL,
            .device_shutdown  = NULL,
            640, 480,
            640, 480,
      },

      [2] = { /* SVGA 800x600 H:46.1kHz V:69Hz */
            .name = "SVGA_800x600",
            .monspecs = {
                  .modedb = NULL,
                  .modedb_len = 0,
                  .hfmin = 30000,
                  .hfmax = 70000,
                  .vfmin = 60,
                  .vfmax = 60,
                  .dclkmin = 6000000,
                  .dclkmax = 28000000,
                  .input = FB_DISP_RGB,
            },
            .mode_screen            = 0x18fa5780,
            .mode_horztiming  = 0x00dc7e77,
            .mode_verttiming  = 0x00584805,
            .mode_clkcontrol  = 0x00020000, /* /2=48Mhz */
            .mode_pwmdiv            = 0x00000000,
            .mode_pwmhi       = 0x00000000,
            .mode_outmask     = 0x00FFFFFF,
            .mode_fifoctrl    = 0x2f2f2f2f,
            .mode_toyclksrc   = 0x00000004, /* AUXPLL directly */
            .mode_backlight   = 0x00000000,
            .mode_auxpll            = 8, /* 96MHz AUXPLL */
            .device_init            = NULL,
            .device_shutdown  = NULL,
            800, 800,
            600, 600,
      },

      [3] = { /* XVGA 1024x768 H:56.2kHz V:70Hz */
            .name = "XVGA_1024x768",
            .monspecs = {
                  .modedb = NULL,
                  .modedb_len = 0,
                  .hfmin = 30000,
                  .hfmax = 70000,
                  .vfmin = 60,
                  .vfmax = 60,
                  .dclkmin = 6000000,
                  .dclkmax = 28000000,
                  .input = FB_DISP_RGB,
            },
            .mode_screen            = 0x1ffaff80,
            .mode_horztiming  = 0x007d0e57,
            .mode_verttiming  = 0x00740a01,
            .mode_clkcontrol  = 0x000A0000, /* /1 */
            .mode_pwmdiv            = 0x00000000,
            .mode_pwmhi       = 0x00000000,
            .mode_outmask     = 0x00FFFFFF,
            .mode_fifoctrl    = 0x2f2f2f2f,
            .mode_toyclksrc   = 0x00000004, /* AUXPLL directly */
            .mode_backlight   = 0x00000000,
            .mode_auxpll            = 6, /* 72MHz AUXPLL */
            .device_init            = NULL,
            .device_shutdown  = NULL,
            1024, 1024,
            768, 768,
      },

      [4] = { /* XVGA XVGA 1280x1024 H:68.5kHz V:65Hz */
            .name = "XVGA_1280x1024",
            .monspecs = {
                  .modedb = NULL,
                  .modedb_len = 0,
                  .hfmin = 30000,
                  .hfmax = 70000,
                  .vfmin = 60,
                  .vfmax = 60,
                  .dclkmin = 6000000,
                  .dclkmax = 28000000,
                  .input = FB_DISP_RGB,
            },
            .mode_screen            = 0x27fbff80,
            .mode_horztiming  = 0x00cdb2c7,
            .mode_verttiming  = 0x00600002,
            .mode_clkcontrol  = 0x000A0000, /* /1 */
            .mode_pwmdiv            = 0x00000000,
            .mode_pwmhi       = 0x00000000,
            .mode_outmask     = 0x00FFFFFF,
            .mode_fifoctrl    = 0x2f2f2f2f,
            .mode_toyclksrc   = 0x00000004, /* AUXPLL directly */
            .mode_backlight   = 0x00000000,
            .mode_auxpll            = 10, /* 120MHz AUXPLL */
            .device_init            = NULL,
            .device_shutdown  = NULL,
            1280, 1280,
            1024, 1024,
      },

      [5] = { /* Samsung 1024x768 TFT */
            .name = "Samsung_1024x768_TFT",
            .monspecs = {
                  .modedb = NULL,
                  .modedb_len = 0,
                  .hfmin = 30000,
                  .hfmax = 70000,
                  .vfmin = 60,
                  .vfmax = 60,
                  .dclkmin = 6000000,
                  .dclkmax = 28000000,
                  .input = FB_DISP_RGB,
            },
            .mode_screen            = 0x1ffaff80,
            .mode_horztiming  = 0x018cc677,
            .mode_verttiming  = 0x00241217,
            .mode_clkcontrol  = 0x00000000, /* SCB 0x1 /4=24Mhz */
            .mode_pwmdiv            = 0x8000063f, /* SCB 0x0 */
            .mode_pwmhi       = 0x03400000, /* SCB 0x0 */
            .mode_outmask     = 0x00FFFFFF,
            .mode_fifoctrl    = 0x2f2f2f2f,
            .mode_toyclksrc   = 0x00000004, /* AUXPLL directly */
            .mode_backlight   = 0x00000000,
            .mode_auxpll            = 8, /* 96MHz AUXPLL */
            .device_init            = board_au1200fb_panel_init,
            .device_shutdown  = board_au1200fb_panel_shutdown,
            1024, 1024,
            768, 768,
      },

      [6] = { /* Toshiba 640x480 TFT */
            .name = "Toshiba_640x480_TFT",
            .monspecs = {
                  .modedb = NULL,
                  .modedb_len = 0,
                  .hfmin = 30000,
                  .hfmax = 70000,
                  .vfmin = 60,
                  .vfmax = 60,
                  .dclkmin = 6000000,
                  .dclkmax = 28000000,
                  .input = FB_DISP_RGB,
            },
            .mode_screen            = LCD_SCREEN_SX_N(640) |
                  LCD_SCREEN_SY_N(480),
            .mode_horztiming  = LCD_HORZTIMING_HPW_N(96) |
                  LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(51),
            .mode_verttiming  = LCD_VERTTIMING_VPW_N(2) |
                  LCD_VERTTIMING_VND1_N(11) | LCD_VERTTIMING_VND2_N(32),
            .mode_clkcontrol  = 0x00000000, /* /4=24Mhz */
            .mode_pwmdiv            = 0x8000063f,
            .mode_pwmhi       = 0x03400000,
            .mode_outmask     = 0x00fcfcfc,
            .mode_fifoctrl    = 0x2f2f2f2f,
            .mode_toyclksrc   = 0x00000004, /* AUXPLL directly */
            .mode_backlight   = 0x00000000,
            .mode_auxpll            = 8, /* 96MHz AUXPLL */
            .device_init            = board_au1200fb_panel_init,
            .device_shutdown  = board_au1200fb_panel_shutdown,
            640, 480,
            640, 480,
      },

      [7] = { /* Sharp 320x240 TFT */
            .name = "Sharp_320x240_TFT",
            .monspecs = {
                  .modedb = NULL,
                  .modedb_len = 0,
                  .hfmin = 12500,
                  .hfmax = 20000,
                  .vfmin = 38,
                  .vfmax = 81,
                  .dclkmin = 4500000,
                  .dclkmax = 6800000,
                  .input = FB_DISP_RGB,
            },
            .mode_screen            = LCD_SCREEN_SX_N(320) |
                  LCD_SCREEN_SY_N(240),
            .mode_horztiming  = LCD_HORZTIMING_HPW_N(60) |
                  LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(2),
            .mode_verttiming  = LCD_VERTTIMING_VPW_N(2) |
                  LCD_VERTTIMING_VND1_N(2) | LCD_VERTTIMING_VND2_N(5),
            .mode_clkcontrol  = LCD_CLKCONTROL_PCD_N(7), /*16=6Mhz*/
            .mode_pwmdiv            = 0x8000063f,
            .mode_pwmhi       = 0x03400000,
            .mode_outmask     = 0x00fcfcfc,
            .mode_fifoctrl    = 0x2f2f2f2f,
            .mode_toyclksrc   = 0x00000004, /* AUXPLL directly */
            .mode_backlight   = 0x00000000,
            .mode_auxpll            = 8, /* 96MHz AUXPLL */
            .device_init            = board_au1200fb_panel_init,
            .device_shutdown  = board_au1200fb_panel_shutdown,
            320, 320,
            240, 240,
      },

      [8] = { /* Toppoly TD070WGCB2 7" 856x480 TFT */
            .name = "Toppoly_TD070WGCB2",
            .monspecs = {
                  .modedb = NULL,
                  .modedb_len = 0,
                  .hfmin = 30000,
                  .hfmax = 70000,
                  .vfmin = 60,
                  .vfmax = 60,
                  .dclkmin = 6000000,
                  .dclkmax = 28000000,
                  .input = FB_DISP_RGB,
            },
            .mode_screen            = LCD_SCREEN_SX_N(856) |
                  LCD_SCREEN_SY_N(480),
            .mode_horztiming  = LCD_HORZTIMING_HND2_N(43) |
                  LCD_HORZTIMING_HND1_N(43) | LCD_HORZTIMING_HPW_N(114),
            .mode_verttiming  = LCD_VERTTIMING_VND2_N(20) |
                  LCD_VERTTIMING_VND1_N(21) | LCD_VERTTIMING_VPW_N(4),
            .mode_clkcontrol  = 0x00020001, /* /4=24Mhz */
            .mode_pwmdiv            = 0x8000063f,
            .mode_pwmhi       = 0x03400000,
            .mode_outmask     = 0x00fcfcfc,
            .mode_fifoctrl    = 0x2f2f2f2f,
            .mode_toyclksrc   = 0x00000004, /* AUXPLL directly */
            .mode_backlight   = 0x00000000,
            .mode_auxpll            = 8, /* 96MHz AUXPLL */
            .device_init            = board_au1200fb_panel_init,
            .device_shutdown  = board_au1200fb_panel_shutdown,
            856, 856,
            480, 480,
      },
};

#define NUM_PANELS (ARRAY_SIZE(known_lcd_panels))

/********************************************************************/

#ifdef CONFIG_PM
static int set_brightness(unsigned int brightness)
{
      unsigned int hi1, divider;

      /* limit brightness pwm duty to >= 30/1600 */
      if (brightness < 30) {
            brightness = 30;
      }
      divider = (lcd->pwmdiv & 0x3FFFF) + 1;
      hi1 = (lcd->pwmhi >> 16) + 1;
      hi1 = (((brightness & 0xFF) + 1) * divider >> 8);
      lcd->pwmhi &= 0xFFFF;
      lcd->pwmhi |= (hi1 << 16);

      return brightness;
}
#endif /* CONFIG_PM */

static int winbpp (unsigned int winctrl1)
{
      int bits = 0;

      /* how many bits are needed for each pixel format */
      switch (winctrl1 & LCD_WINCTRL1_FRM) {
      case LCD_WINCTRL1_FRM_1BPP:
            bits = 1;
            break;
      case LCD_WINCTRL1_FRM_2BPP:
            bits = 2;
            break;
      case LCD_WINCTRL1_FRM_4BPP:
            bits = 4;
            break;
      case LCD_WINCTRL1_FRM_8BPP:
            bits = 8;
            break;
      case LCD_WINCTRL1_FRM_12BPP:
      case LCD_WINCTRL1_FRM_16BPP655:
      case LCD_WINCTRL1_FRM_16BPP565:
      case LCD_WINCTRL1_FRM_16BPP556:
      case LCD_WINCTRL1_FRM_16BPPI1555:
      case LCD_WINCTRL1_FRM_16BPPI5551:
      case LCD_WINCTRL1_FRM_16BPPA1555:
      case LCD_WINCTRL1_FRM_16BPPA5551:
            bits = 16;
            break;
      case LCD_WINCTRL1_FRM_24BPP:
      case LCD_WINCTRL1_FRM_32BPP:
            bits = 32;
            break;
      }

      return bits;
}

static int fbinfo2index (struct fb_info *fb_info)
{
      int i;

      for (i = 0; i < CONFIG_FB_AU1200_DEVS; ++i) {
            if (fb_info == (struct fb_info *)(&_au1200fb_devices[i].fb_info))
                  return i;
      }
      printk("au1200fb: ERROR: fbinfo2index failed!\n");
      return -1;
}

static int au1200_setlocation (struct au1200fb_device *fbdev, int plane,
      int xpos, int ypos)
{
      uint32 winctrl0, winctrl1, winenable, fb_offset = 0;
      int xsz, ysz;

      /* FIX!!! NOT CHECKING FOR COMPLETE OFFSCREEN YET */

      winctrl0 = lcd->window[plane].winctrl0;
      winctrl1 = lcd->window[plane].winctrl1;
      winctrl0 &= (LCD_WINCTRL0_A | LCD_WINCTRL0_AEN);
      winctrl1 &= ~(LCD_WINCTRL1_SZX | LCD_WINCTRL1_SZY);

      /* Check for off-screen adjustments */
      xsz = win->w[plane].xres;
      ysz = win->w[plane].yres;
      if ((xpos + win->w[plane].xres) > panel->Xres) {
            /* Off-screen to the right */
            xsz = panel->Xres - xpos; /* off by 1 ??? */
            /*printk("off screen right\n");*/
      }

      if ((ypos + win->w[plane].yres) > panel->Yres) {
            /* Off-screen to the bottom */
            ysz = panel->Yres - ypos; /* off by 1 ??? */
            /*printk("off screen bottom\n");*/
      }

      if (xpos < 0) {
            /* Off-screen to the left */
            xsz = win->w[plane].xres + xpos;
            fb_offset += (((0 - xpos) * winbpp(lcd->window[plane].winctrl1))/8);
            xpos = 0;
            /*printk("off screen left\n");*/
      }

      if (ypos < 0) {
            /* Off-screen to the top */
            ysz = win->w[plane].yres + ypos;
            /* fixme: fb_offset += ((0-ypos)*fb_pars[plane].line_length); */
            ypos = 0;
            /*printk("off screen top\n");*/
      }

      /* record settings */
      win->w[plane].xpos = xpos;
      win->w[plane].ypos = ypos;

      xsz -= 1;
      ysz -= 1;
      winctrl0 |= (xpos << 21);
      winctrl0 |= (ypos << 10);
      winctrl1 |= (xsz << 11);
      winctrl1 |= (ysz << 0);

      /* Disable the window while making changes, then restore WINEN */
      winenable = lcd->winenable & (1 << plane);
      au_sync();
      lcd->winenable &= ~(1 << plane);
      lcd->window[plane].winctrl0 = winctrl0;
      lcd->window[plane].winctrl1 = winctrl1;
      lcd->window[plane].winbuf0 =
      lcd->window[plane].winbuf1 = fbdev->fb_phys;
      lcd->window[plane].winbufctrl = 0; /* select winbuf0 */
      lcd->winenable |= winenable;
      au_sync();

      return 0;
}

static void au1200_setpanel (struct panel_settings *newpanel)
{
      /*
       * Perform global setup/init of LCD controller
       */
      uint32 winenable;

      /* Make sure all windows disabled */
      winenable = lcd->winenable;
      lcd->winenable = 0;
      au_sync();
      /*
       * Ensure everything is disabled before reconfiguring
       */
      if (lcd->screen & LCD_SCREEN_SEN) {
            /* Wait for vertical sync period */
            lcd->intstatus = LCD_INT_SS;
            while ((lcd->intstatus & LCD_INT_SS) == 0) {
                  au_sync();
            }

            lcd->screen &= ~LCD_SCREEN_SEN;     /*disable the controller*/

            do {
                  lcd->intstatus = lcd->intstatus; /*clear interrupts*/
                  au_sync();
            /*wait for controller to shut down*/
            } while ((lcd->intstatus & LCD_INT_SD) == 0);

            /* Call shutdown of current panel (if up) */
            /* this must occur last, because if an external clock is driving
                the controller, the clock cannot be turned off before first
                  shutting down the controller.
             */
            if (panel->device_shutdown != NULL)
                  panel->device_shutdown();
      }

      /* Newpanel == NULL indicates a shutdown operation only */
      if (newpanel == NULL)
            return;

      panel = newpanel;

      printk("Panel(%s), %dx%d\n", panel->name, panel->Xres, panel->Yres);

      /*
       * Setup clocking if internal LCD clock source (assumes sys_auxpll valid)
       */
      if (!(panel->mode_clkcontrol & LCD_CLKCONTROL_EXT))
      {
            uint32 sys_clksrc;
            au_writel(panel->mode_auxpll, SYS_AUXPLL);
            sys_clksrc = au_readl(SYS_CLKSRC) & ~0x0000001f;
            sys_clksrc |= panel->mode_toyclksrc;
            au_writel(sys_clksrc, SYS_CLKSRC);
      }

      /*
       * Configure panel timings
       */
      lcd->screen = panel->mode_screen;
      lcd->horztiming = panel->mode_horztiming;
      lcd->verttiming = panel->mode_verttiming;
      lcd->clkcontrol = panel->mode_clkcontrol;
      lcd->pwmdiv = panel->mode_pwmdiv;
      lcd->pwmhi = panel->mode_pwmhi;
      lcd->outmask = panel->mode_outmask;
      lcd->fifoctrl = panel->mode_fifoctrl;
      au_sync();

      /* fixme: Check window settings to make sure still valid
       * for new geometry */
#if 0
      au1200_setlocation(fbdev, 0, win->w[0].xpos, win->w[0].ypos);
      au1200_setlocation(fbdev, 1, win->w[1].xpos, win->w[1].ypos);
      au1200_setlocation(fbdev, 2, win->w[2].xpos, win->w[2].ypos);
      au1200_setlocation(fbdev, 3, win->w[3].xpos, win->w[3].ypos);
#endif
      lcd->winenable = winenable;

      /*
       * Re-enable screen now that it is configured
       */
      lcd->screen |= LCD_SCREEN_SEN;
      au_sync();

      /* Call init of panel */
      if (panel->device_init != NULL) panel->device_init();

      /* FIX!!!! not appropriate on panel change!!! Global setup/init */
      lcd->intenable = 0;
      lcd->intstatus = ~0;
      lcd->backcolor = win->mode_backcolor;

      /* Setup Color Key - FIX!!! */
      lcd->colorkey = win->mode_colorkey;
      lcd->colorkeymsk = win->mode_colorkeymsk;

      /* Setup HWCursor - FIX!!! Need to support this eventually */
      lcd->hwc.cursorctrl = 0;
      lcd->hwc.cursorpos = 0;
      lcd->hwc.cursorcolor0 = 0;
      lcd->hwc.cursorcolor1 = 0;
      lcd->hwc.cursorcolor2 = 0;
      lcd->hwc.cursorcolor3 = 0;


#if 0
#define D(X) printk("%25s: %08X\n", #X, X)
      D(lcd->screen);
      D(lcd->horztiming);
      D(lcd->verttiming);
      D(lcd->clkcontrol);
      D(lcd->pwmdiv);
      D(lcd->pwmhi);
      D(lcd->outmask);
      D(lcd->fifoctrl);
      D(lcd->window[0].winctrl0);
      D(lcd->window[0].winctrl1);
      D(lcd->window[0].winctrl2);
      D(lcd->window[0].winbuf0);
      D(lcd->window[0].winbuf1);
      D(lcd->window[0].winbufctrl);
      D(lcd->window[1].winctrl0);
      D(lcd->window[1].winctrl1);
      D(lcd->window[1].winctrl2);
      D(lcd->window[1].winbuf0);
      D(lcd->window[1].winbuf1);
      D(lcd->window[1].winbufctrl);
      D(lcd->window[2].winctrl0);
      D(lcd->window[2].winctrl1);
      D(lcd->window[2].winctrl2);
      D(lcd->window[2].winbuf0);
      D(lcd->window[2].winbuf1);
      D(lcd->window[2].winbufctrl);
      D(lcd->window[3].winctrl0);
      D(lcd->window[3].winctrl1);
      D(lcd->window[3].winctrl2);
      D(lcd->window[3].winbuf0);
      D(lcd->window[3].winbuf1);
      D(lcd->window[3].winbufctrl);
      D(lcd->winenable);
      D(lcd->intenable);
      D(lcd->intstatus);
      D(lcd->backcolor);
      D(lcd->winenable);
      D(lcd->colorkey);
    D(lcd->colorkeymsk);
      D(lcd->hwc.cursorctrl);
      D(lcd->hwc.cursorpos);
      D(lcd->hwc.cursorcolor0);
      D(lcd->hwc.cursorcolor1);
      D(lcd->hwc.cursorcolor2);
      D(lcd->hwc.cursorcolor3);
#endif
}

static void au1200_setmode(struct au1200fb_device *fbdev)
{
      int plane = fbdev->plane;
      /* Window/plane setup */
      lcd->window[plane].winctrl1 = ( 0
            | LCD_WINCTRL1_PRI_N(plane)
            | win->w[plane].mode_winctrl1 /* FRM,CCO,PO,PIPE */
            ) ;

      au1200_setlocation(fbdev, plane, win->w[plane].xpos, win->w[plane].ypos);

      lcd->window[plane].winctrl2 = ( 0
            | LCD_WINCTRL2_CKMODE_00
            | LCD_WINCTRL2_DBM
            | LCD_WINCTRL2_BX_N( fbdev->fb_info.fix.line_length)
            | LCD_WINCTRL2_SCX_1
            | LCD_WINCTRL2_SCY_1
            ) ;
      lcd->winenable |= win->w[plane].mode_winenable;
      au_sync();
}


/* Inline helpers */

/*#define panel_is_dual(panel)  ((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/
/*#define panel_is_active(panel)((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/

#define panel_is_color(panel) ((panel->mode_screen & LCD_SCREEN_PT) <= LCD_SCREEN_PT_CDSTN)

/* Bitfields format supported by the controller. */
static struct fb_bitfield rgb_bitfields[][4] = {
      /*     Red,          Green,    Blue,           Transp   */
      [LCD_WINCTRL1_FRM_16BPP655 >> 25] =
            { { 10, 6, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },

      [LCD_WINCTRL1_FRM_16BPP565 >> 25] =
            { { 11, 5, 0 }, { 5, 6, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },

      [LCD_WINCTRL1_FRM_16BPP556 >> 25] =
            { { 11, 5, 0 }, { 6, 5, 0 }, { 0, 6, 0 }, { 0, 0, 0 } },

      [LCD_WINCTRL1_FRM_16BPPI1555 >> 25] =
            { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },

      [LCD_WINCTRL1_FRM_16BPPI5551 >> 25] =
            { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 0, 0 } },

      [LCD_WINCTRL1_FRM_16BPPA1555 >> 25] =
            { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 15, 1, 0 } },

      [LCD_WINCTRL1_FRM_16BPPA5551 >> 25] =
            { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 1, 0 } },

      [LCD_WINCTRL1_FRM_24BPP >> 25] =
            { { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 0, 0, 0 } },

      [LCD_WINCTRL1_FRM_32BPP >> 25] =
            { { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 24, 0, 0 } },
};

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

/* Helpers */

static void au1200fb_update_fbinfo(struct fb_info *fbi)
{
      /* FIX!!!! This also needs to take the window pixel format into account!!! */

      /* Update var-dependent FB info */
      if (panel_is_color(panel)) {
            if (fbi->var.bits_per_pixel <= 8) {
                  /* palettized */
                  fbi->fix.visual = FB_VISUAL_PSEUDOCOLOR;
                  fbi->fix.line_length = fbi->var.xres_virtual /
                        (8/fbi->var.bits_per_pixel);
            } else {
                  /* non-palettized */
                  fbi->fix.visual = FB_VISUAL_TRUECOLOR;
                  fbi->fix.line_length = fbi->var.xres_virtual * (fbi->var.bits_per_pixel / 8);
            }
      } else {
            /* mono FIX!!! mono 8 and 4 bits */
            fbi->fix.visual = FB_VISUAL_MONO10;
            fbi->fix.line_length = fbi->var.xres_virtual / 8;
      }

      fbi->screen_size = fbi->fix.line_length * fbi->var.yres_virtual;
      print_dbg("line length: %d\n", fbi->fix.line_length);
      print_dbg("bits_per_pixel: %d\n", fbi->var.bits_per_pixel);
}

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

/* AU1200 framebuffer driver */

/* fb_check_var
 * Validate var settings with hardware restrictions and modify it if necessary
 */
static int au1200fb_fb_check_var(struct fb_var_screeninfo *var,
      struct fb_info *fbi)
{
      struct au1200fb_device *fbdev = (struct au1200fb_device *)fbi;
      u32 pixclock;
      int screen_size, plane;

      plane = fbdev->plane;

      /* Make sure that the mode respect all LCD controller and
       * panel restrictions. */
      var->xres = win->w[plane].xres;
      var->yres = win->w[plane].yres;

      /* No need for virtual resolution support */
      var->xres_virtual = var->xres;
      var->yres_virtual = var->yres;

      var->bits_per_pixel = winbpp(win->w[plane].mode_winctrl1);

      screen_size = var->xres_virtual * var->yres_virtual;
      if (var->bits_per_pixel > 8) screen_size *= (var->bits_per_pixel / 8);
      else screen_size /= (8/var->bits_per_pixel);

      if (fbdev->fb_len < screen_size)
            return -EINVAL; /* Virtual screen is to big, abort */

      /* FIX!!!! what are the implicaitons of ignoring this for windows ??? */
      /* The max LCD clock is fixed to 48MHz (value of AUX_CLK). The pixel
       * clock can only be obtain by dividing this value by an even integer.
       * Fallback to a slower pixel clock if necessary. */
      pixclock = max((u32)(PICOS2KHZ(var->pixclock) * 1000), fbi->monspecs.dclkmin);
      pixclock = min(pixclock, min(fbi->monspecs.dclkmax, (u32)AU1200_LCD_MAX_CLK/2));

      if (AU1200_LCD_MAX_CLK % pixclock) {
            int diff = AU1200_LCD_MAX_CLK % pixclock;
            pixclock -= diff;
      }

      var->pixclock = KHZ2PICOS(pixclock/1000);
#if 0
      if (!panel_is_active(panel)) {
            int pcd = AU1200_LCD_MAX_CLK / (pixclock * 2) - 1;

            if (!panel_is_color(panel)
                  && (panel->control_base & LCD_CONTROL_MPI) && (pcd < 3)) {
                  /* STN 8bit mono panel support is up to 6MHz pixclock */
                  var->pixclock = KHZ2PICOS(6000);
            } else if (!pcd) {
                  /* Other STN panel support is up to 12MHz  */
                  var->pixclock = KHZ2PICOS(12000);
            }
      }
#endif
      /* Set bitfield accordingly */
      switch (var->bits_per_pixel) {
            case 16:
            {
                  /* 16bpp True color.
                   * These must be set to MATCH WINCTRL[FORM] */
                  int idx;
                  idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25;
                  var->red    = rgb_bitfields[idx][0];
                  var->green  = rgb_bitfields[idx][1];
                  var->blue   = rgb_bitfields[idx][2];
                  var->transp = rgb_bitfields[idx][3];
                  break;
            }

            case 32:
            {
                  /* 32bpp True color.
                   * These must be set to MATCH WINCTRL[FORM] */
                  int idx;
                  idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25;
                  var->red    = rgb_bitfields[idx][0];
                  var->green  = rgb_bitfields[idx][1];
                  var->blue   = rgb_bitfields[idx][2];
                  var->transp = rgb_bitfields[idx][3];
                  break;
            }
            default:
                  print_dbg("Unsupported depth %dbpp", var->bits_per_pixel);
                  return -EINVAL;
      }

      return 0;
}

/* fb_set_par
 * Set hardware with var settings. This will enable the controller with a
 * specific mode, normally validated with the fb_check_var method
 */
static int au1200fb_fb_set_par(struct fb_info *fbi)
{
      struct au1200fb_device *fbdev = (struct au1200fb_device *)fbi;

      au1200fb_update_fbinfo(fbi);
      au1200_setmode(fbdev);

      return 0;
}

/* fb_setcolreg
 * Set color in LCD palette.
 */
static int au1200fb_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
      unsigned blue, unsigned transp, struct fb_info *fbi)
{
      volatile u32 *palette = lcd->palette;
      u32 value;

      if (regno > (AU1200_LCD_NBR_PALETTE_ENTRIES - 1))
            return -EINVAL;

      if (fbi->var.grayscale) {
            /* Convert color to grayscale */
            red = green = blue =
                  (19595 * red + 38470 * green + 7471 * blue) >> 16;
      }

      if (fbi->fix.visual == FB_VISUAL_TRUECOLOR) {
            /* Place color in the pseudopalette */
            if (regno > 16)
                  return -EINVAL;

            palette = (u32*) fbi->pseudo_palette;

            red   >>= (16 - fbi->var.red.length);
            green >>= (16 - fbi->var.green.length);
            blue  >>= (16 - fbi->var.blue.length);

            value = (red   << fbi->var.red.offset)    |
                  (green << fbi->var.green.offset)|
                  (blue  << fbi->var.blue.offset);
            value &= 0xFFFF;

      } else if (1 /*FIX!!! panel_is_active(fbdev->panel)*/) {
            /* COLOR TFT PALLETTIZED (use RGB 565) */
            value = (red & 0xF800)|((green >> 5) &
                        0x07E0)|((blue >> 11) & 0x001F);
            value &= 0xFFFF;

      } else if (0 /*panel_is_color(fbdev->panel)*/) {
            /* COLOR STN MODE */
            value = 0x1234;
            value &= 0xFFF;
      } else {
            /* MONOCHROME MODE */
            value = (green >> 12) & 0x000F;
            value &= 0xF;
      }

      palette[regno] = value;

      return 0;
}

/* fb_blank
 * Blank the screen. Depending on the mode, the screen will be
 * activated with the backlight color, or desactivated
 */
static int au1200fb_fb_blank(int blank_mode, struct fb_info *fbi)
{
      /* Short-circuit screen blanking */
      if (noblanking)
            return 0;

      switch (blank_mode) {

      case FB_BLANK_UNBLANK:
      case FB_BLANK_NORMAL:
            /* printk("turn on panel\n"); */
            au1200_setpanel(panel);
            break;
      case FB_BLANK_VSYNC_SUSPEND:
      case FB_BLANK_HSYNC_SUSPEND:
      case FB_BLANK_POWERDOWN:
            /* printk("turn off panel\n"); */
            au1200_setpanel(NULL);
            break;
      default:
            break;

      }

      /* FB_BLANK_NORMAL is a soft blank */
      return (blank_mode == FB_BLANK_NORMAL) ? -EINVAL : 0;
}

/* fb_mmap
 * Map video memory in user space. We don't use the generic fb_mmap
 * method mainly to allow the use of the TLB streaming flag (CCA=6)
 */
static int au1200fb_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)

{
      unsigned int len;
      unsigned long start=0, off;
      struct au1200fb_device *fbdev = (struct au1200fb_device *) info;

#ifdef CONFIG_PM
      au1xxx_pm_access(LCD_pm_dev);
#endif

      if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) {
            return -EINVAL;
      }

      start = fbdev->fb_phys & PAGE_MASK;
      len = PAGE_ALIGN((start & ~PAGE_MASK) + fbdev->fb_len);

      off = vma->vm_pgoff << PAGE_SHIFT;

      if ((vma->vm_end - vma->vm_start + off) > len) {
            return -EINVAL;
      }

      off += start;
      vma->vm_pgoff = off >> PAGE_SHIFT;

      vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
      pgprot_val(vma->vm_page_prot) |= _CACHE_MASK; /* CCA=7 */

      vma->vm_flags |= VM_IO;

      return io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
                          vma->vm_end - vma->vm_start,
                          vma->vm_page_prot);

      return 0;
}

static void set_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)
{

      unsigned int hi1, divider;

      /* SCREEN_SIZE: user cannot reset size, must switch panel choice */

      if (pdata->flags & SCREEN_BACKCOLOR)
            lcd->backcolor = pdata->backcolor;

      if (pdata->flags & SCREEN_BRIGHTNESS) {

            // limit brightness pwm duty to >= 30/1600
            if (pdata->brightness < 30) {
                  pdata->brightness = 30;
            }
            divider = (lcd->pwmdiv & 0x3FFFF) + 1;
            hi1 = (lcd->pwmhi >> 16) + 1;
            hi1 = (((pdata->brightness & 0xFF)+1) * divider >> 8);
            lcd->pwmhi &= 0xFFFF;
            lcd->pwmhi |= (hi1 << 16);
      }

      if (pdata->flags & SCREEN_COLORKEY)
            lcd->colorkey = pdata->colorkey;

      if (pdata->flags & SCREEN_MASK)
            lcd->colorkeymsk = pdata->mask;
      au_sync();
}

static void get_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)
{
      unsigned int hi1, divider;

      pdata->xsize = ((lcd->screen & LCD_SCREEN_SX) >> 19) + 1;
      pdata->ysize = ((lcd->screen & LCD_SCREEN_SY) >> 8) + 1;

      pdata->backcolor = lcd->backcolor;
      pdata->colorkey = lcd->colorkey;
      pdata->mask = lcd->colorkeymsk;

      // brightness
      hi1 = (lcd->pwmhi >> 16) + 1;
      divider = (lcd->pwmdiv & 0x3FFFF) + 1;
      pdata->brightness = ((hi1 << 8) / divider) - 1;
      au_sync();
}

static void set_window(unsigned int plane,
      struct au1200_lcd_window_regs_t *pdata)
{
      unsigned int val, bpp;

      /* Window control register 0 */
      if (pdata->flags & WIN_POSITION) {
            val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_OX |
                        LCD_WINCTRL0_OY);
            val |= ((pdata->xpos << 21) & LCD_WINCTRL0_OX);
            val |= ((pdata->ypos << 10) & LCD_WINCTRL0_OY);
            lcd->window[plane].winctrl0 = val;
      }
      if (pdata->flags & WIN_ALPHA_COLOR) {
            val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_A);
            val |= ((pdata->alpha_color << 2) & LCD_WINCTRL0_A);
            lcd->window[plane].winctrl0 = val;
      }
      if (pdata->flags & WIN_ALPHA_MODE) {
            val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_AEN);
            val |= ((pdata->alpha_mode << 1) & LCD_WINCTRL0_AEN);
            lcd->window[plane].winctrl0 = val;
      }

      /* Window control register 1 */
      if (pdata->flags & WIN_PRIORITY) {
            val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PRI);
            val |= ((pdata->priority << 30) & LCD_WINCTRL1_PRI);
            lcd->window[plane].winctrl1 = val;
      }
      if (pdata->flags & WIN_CHANNEL) {
            val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PIPE);
            val |= ((pdata->channel << 29) & LCD_WINCTRL1_PIPE);
            lcd->window[plane].winctrl1 = val;
      }
      if (pdata->flags & WIN_BUFFER_FORMAT) {
            val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_FRM);
            val |= ((pdata->buffer_format << 25) & LCD_WINCTRL1_FRM);
            lcd->window[plane].winctrl1 = val;
      }
      if (pdata->flags & WIN_COLOR_ORDER) {
            val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_CCO);
            val |= ((pdata->color_order << 24) & LCD_WINCTRL1_CCO);
            lcd->window[plane].winctrl1 = val;
      }
      if (pdata->flags & WIN_PIXEL_ORDER) {
            val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PO);
            val |= ((pdata->pixel_order << 22) & LCD_WINCTRL1_PO);
            lcd->window[plane].winctrl1 = val;
      }
      if (pdata->flags & WIN_SIZE) {
            val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_SZX |
                        LCD_WINCTRL1_SZY);
            val |= (((pdata->xsize << 11) - 1) & LCD_WINCTRL1_SZX);
            val |= (((pdata->ysize) - 1) & LCD_WINCTRL1_SZY);
            lcd->window[plane].winctrl1 = val;
            /* program buffer line width */
            bpp = winbpp(val) / 8;
            val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_BX);
            val |= (((pdata->xsize * bpp) << 8) & LCD_WINCTRL2_BX);
            lcd->window[plane].winctrl2 = val;
      }

      /* Window control register 2 */
      if (pdata->flags & WIN_COLORKEY_MODE) {
            val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_CKMODE);
            val |= ((pdata->colorkey_mode << 24) & LCD_WINCTRL2_CKMODE);
            lcd->window[plane].winctrl2 = val;
      }
      if (pdata->flags & WIN_DOUBLE_BUFFER_MODE) {
            val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_DBM);
            val |= ((pdata->double_buffer_mode << 23) & LCD_WINCTRL2_DBM);
            lcd->window[plane].winctrl2 = val;
      }
      if (pdata->flags & WIN_RAM_ARRAY_MODE) {
            val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_RAM);
            val |= ((pdata->ram_array_mode << 21) & LCD_WINCTRL2_RAM);
            lcd->window[plane].winctrl2 = val;
      }

      /* Buffer line width programmed with WIN_SIZE */

      if (pdata->flags & WIN_BUFFER_SCALE) {
            val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_SCX |
                        LCD_WINCTRL2_SCY);
            val |= ((pdata->xsize << 11) & LCD_WINCTRL2_SCX);
            val |= ((pdata->ysize) & LCD_WINCTRL2_SCY);
            lcd->window[plane].winctrl2 = val;
      }

      if (pdata->flags & WIN_ENABLE) {
            val = lcd->winenable;
            val &= ~(1<<plane);
            val |= (pdata->enable & 1) << plane;
            lcd->winenable = val;
      }
      au_sync();
}

static void get_window(unsigned int plane,
      struct au1200_lcd_window_regs_t *pdata)
{
      /* Window control register 0 */
      pdata->xpos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OX) >> 21;
      pdata->ypos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OY) >> 10;
      pdata->alpha_color = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_A) >> 2;
      pdata->alpha_mode = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_AEN) >> 1;

      /* Window control register 1 */
      pdata->priority = (lcd->window[plane].winctrl1& LCD_WINCTRL1_PRI) >> 30;
      pdata->channel = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PIPE) >> 29;
      pdata->buffer_format = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_FRM) >> 25;
      pdata->color_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_CCO) >> 24;
      pdata->pixel_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PO) >> 22;
      pdata->xsize = ((lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZX) >> 11) + 1;
      pdata->ysize = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZY) + 1;

      /* Window control register 2 */
      pdata->colorkey_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_CKMODE) >> 24;
      pdata->double_buffer_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_DBM) >> 23;
      pdata->ram_array_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_RAM) >> 21;

      pdata->enable = (lcd->winenable >> plane) & 1;
      au_sync();
}

static int au1200fb_ioctl(struct fb_info *info, unsigned int cmd,
                          unsigned long arg)
{
      int plane;
      int val;

#ifdef CONFIG_PM
      au1xxx_pm_access(LCD_pm_dev);
#endif

      plane = fbinfo2index(info);
      print_dbg("au1200fb: ioctl %d on plane %d\n", cmd, plane);

      if (cmd == AU1200_LCD_FB_IOCTL) {
            struct au1200_lcd_iodata_t iodata;

            if (copy_from_user(&iodata, (void __user *) arg, sizeof(iodata)))
                  return -EFAULT;

            print_dbg("FB IOCTL called\n");

            switch (iodata.subcmd) {
            case AU1200_LCD_SET_SCREEN:
                  print_dbg("AU1200_LCD_SET_SCREEN\n");
                  set_global(cmd, &iodata.global);
                  break;

            case AU1200_LCD_GET_SCREEN:
                  print_dbg("AU1200_LCD_GET_SCREEN\n");
                  get_global(cmd, &iodata.global);
                  break;

            case AU1200_LCD_SET_WINDOW:
                  print_dbg("AU1200_LCD_SET_WINDOW\n");
                  set_window(plane, &iodata.window);
                  break;

            case AU1200_LCD_GET_WINDOW:
                  print_dbg("AU1200_LCD_GET_WINDOW\n");
                  get_window(plane, &iodata.window);
                  break;

            case AU1200_LCD_SET_PANEL:
                  print_dbg("AU1200_LCD_SET_PANEL\n");
                  if ((iodata.global.panel_choice >= 0) &&
                              (iodata.global.panel_choice <
                               NUM_PANELS))
                  {
                        struct panel_settings *newpanel;
                        panel_index = iodata.global.panel_choice;
                        newpanel = &known_lcd_panels[panel_index];
                        au1200_setpanel(newpanel);
                  }
                  break;

            case AU1200_LCD_GET_PANEL:
                  print_dbg("AU1200_LCD_GET_PANEL\n");
                  iodata.global.panel_choice = panel_index;
                  break;

            default:
                  return -EINVAL;
            }

            val = copy_to_user((void __user *) arg, &iodata, sizeof(iodata));
            if (val) {
                  print_dbg("error: could not copy %d bytes\n", val);
                  return -EFAULT;
            }
      }

      return 0;
}


static struct fb_ops au1200fb_fb_ops = {
      .owner            = THIS_MODULE,
      .fb_check_var     = au1200fb_fb_check_var,
      .fb_set_par = au1200fb_fb_set_par,
      .fb_setcolreg     = au1200fb_fb_setcolreg,
      .fb_blank   = au1200fb_fb_blank,
      .fb_fillrect      = cfb_fillrect,
      .fb_copyarea      = cfb_copyarea,
      .fb_imageblit     = cfb_imageblit,
      .fb_sync    = NULL,
      .fb_ioctl   = au1200fb_ioctl,
      .fb_mmap    = au1200fb_fb_mmap,
};

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

static irqreturn_t au1200fb_handle_irq(int irq, void* dev_id)
{
      /* Nothing to do for now, just clear any pending interrupt */
      lcd->intstatus = lcd->intstatus;
      au_sync();

      return IRQ_HANDLED;
}

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

/* AU1200 LCD device probe helpers */

static int au1200fb_init_fbinfo(struct au1200fb_device *fbdev)
{
      struct fb_info *fbi = &fbdev->fb_info;
      int bpp;

      memset(fbi, 0, sizeof(struct fb_info));
      fbi->fbops = &au1200fb_fb_ops;

      bpp = winbpp(win->w[fbdev->plane].mode_winctrl1);

      /* Copy monitor specs from panel data */
      /* fixme: we're setting up LCD controller windows, so these dont give a
      damn as to what the monitor specs are (the panel itself does, but that
      isnt done here...so maybe need a generic catchall monitor setting??? */
      memcpy(&fbi->monspecs, &panel->monspecs, sizeof(struct fb_monspecs));

      /* We first try the user mode passed in argument. If that failed,
       * or if no one has been specified, we default to the first mode of the
       * panel list. Note that after this call, var data will be set */
      if (!fb_find_mode(&fbi->var,
                    fbi,
                    NULL, /* drv_info.opt_mode, */
                    fbi->monspecs.modedb,
                    fbi->monspecs.modedb_len,
                    fbi->monspecs.modedb,
                    bpp)) {

            print_err("Cannot find valid mode for panel %s", panel->name);
            return -EFAULT;
      }

      fbi->pseudo_palette = kcalloc(16, sizeof(u32), GFP_KERNEL);
      if (!fbi->pseudo_palette) {
            return -ENOMEM;
      }

      if (fb_alloc_cmap(&fbi->cmap, AU1200_LCD_NBR_PALETTE_ENTRIES, 0) < 0) {
            print_err("Fail to allocate colormap (%d entries)",
                     AU1200_LCD_NBR_PALETTE_ENTRIES);
            kfree(fbi->pseudo_palette);
            return -EFAULT;
      }

      strncpy(fbi->fix.id, "AU1200", sizeof(fbi->fix.id));
      fbi->fix.smem_start = fbdev->fb_phys;
      fbi->fix.smem_len = fbdev->fb_len;
      fbi->fix.type = FB_TYPE_PACKED_PIXELS;
      fbi->fix.xpanstep = 0;
      fbi->fix.ypanstep = 0;
      fbi->fix.mmio_start = 0;
      fbi->fix.mmio_len = 0;
      fbi->fix.accel = FB_ACCEL_NONE;

      fbi->screen_base = (char __iomem *) fbdev->fb_mem;

      au1200fb_update_fbinfo(fbi);

      return 0;
}

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

/* AU1200 LCD controller device driver */

static int au1200fb_drv_probe(struct device *dev)
{
      struct au1200fb_device *fbdev;
      unsigned long page;
      int bpp, plane, ret;

      if (!dev)
            return -EINVAL;

      for (plane = 0; plane < CONFIG_FB_AU1200_DEVS; ++plane) {
            bpp = winbpp(win->w[plane].mode_winctrl1);
            if (win->w[plane].xres == 0)
                  win->w[plane].xres = panel->Xres;
            if (win->w[plane].yres == 0)
                  win->w[plane].yres = panel->Yres;

            fbdev = &_au1200fb_devices[plane];
            memset(fbdev, 0, sizeof(struct au1200fb_device));
            fbdev->plane = plane;

            /* Allocate the framebuffer to the maximum screen size */
            fbdev->fb_len = (win->w[plane].xres * win->w[plane].yres * bpp) / 8;

            fbdev->fb_mem = dma_alloc_noncoherent(dev,
                        PAGE_ALIGN(fbdev->fb_len),
                        &fbdev->fb_phys, GFP_KERNEL);
            if (!fbdev->fb_mem) {
                  print_err("fail to allocate frambuffer (size: %dK))",
                          fbdev->fb_len / 1024);
                  return -ENOMEM;
            }

            /*
             * Set page reserved so that mmap will work. This is necessary
             * since we'll be remapping normal memory.
             */
            for (page = (unsigned long)fbdev->fb_phys;
                 page < PAGE_ALIGN((unsigned long)fbdev->fb_phys +
                       fbdev->fb_len);
                 page += PAGE_SIZE) {
                  SetPageReserved(pfn_to_page(page >> PAGE_SHIFT)); /* LCD DMA is NOT coherent on Au1200 */
            }
            print_dbg("Framebuffer memory map at %p", fbdev->fb_mem);
            print_dbg("phys=0x%08x, size=%dK", fbdev->fb_phys, fbdev->fb_len / 1024);

            /* Init FB data */
            if ((ret = au1200fb_init_fbinfo(fbdev)) < 0)
                  goto failed;

            /* Register new framebuffer */
            if ((ret = register_framebuffer(&fbdev->fb_info)) < 0) {
                  print_err("cannot register new framebuffer");
                  goto failed;
            }

            au1200fb_fb_set_par(&fbdev->fb_info);

#if !defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_LOGO)
            if (plane == 0)
                  if (fb_prepare_logo(&fbdev->fb_info, FB_ROTATE_UR)) {
                        /* Start display and show logo on boot */
                        fb_set_cmap(&fbdev->fb_info.cmap,
                                    &fbdev->fb_info);

                        fb_show_logo(&fbdev->fb_info, FB_ROTATE_UR);
                  }
#endif
      }

      /* Now hook interrupt too */
      if ((ret = request_irq(AU1200_LCD_INT, au1200fb_handle_irq,
                    IRQF_DISABLED | IRQF_SHARED, "lcd", (void *)dev)) < 0) {
            print_err("fail to request interrupt line %d (err: %d)",
                    AU1200_LCD_INT, ret);
            goto failed;
      }

      return 0;

failed:
      /* NOTE: This only does the current plane/window that failed; others are still active */
      if (fbdev->fb_mem)
            dma_free_noncoherent(dev, PAGE_ALIGN(fbdev->fb_len),
                        fbdev->fb_mem, fbdev->fb_phys);
      if (fbdev->fb_info.cmap.len != 0)
            fb_dealloc_cmap(&fbdev->fb_info.cmap);
      if (fbdev->fb_info.pseudo_palette)
            kfree(fbdev->fb_info.pseudo_palette);
      if (plane == 0)
            free_irq(AU1200_LCD_INT, (void*)dev);
      return ret;
}

static int au1200fb_drv_remove(struct device *dev)
{
      struct au1200fb_device *fbdev;
      int plane;

      if (!dev)
            return -ENODEV;

      /* Turn off the panel */
      au1200_setpanel(NULL);

      for (plane = 0; plane < CONFIG_FB_AU1200_DEVS; ++plane)
      {
            fbdev = &_au1200fb_devices[plane];

            /* Clean up all probe data */
            unregister_framebuffer(&fbdev->fb_info);
            if (fbdev->fb_mem)
                  dma_free_noncoherent(dev, PAGE_ALIGN(fbdev->fb_len),
                              fbdev->fb_mem, fbdev->fb_phys);
            if (fbdev->fb_info.cmap.len != 0)
                  fb_dealloc_cmap(&fbdev->fb_info.cmap);
            if (fbdev->fb_info.pseudo_palette)
                  kfree(fbdev->fb_info.pseudo_palette);
      }

      free_irq(AU1200_LCD_INT, (void *)dev);

      return 0;
}

#ifdef CONFIG_PM
static int au1200fb_drv_suspend(struct device *dev, u32 state, u32 level)
{
      /* TODO */
      return 0;
}

static int au1200fb_drv_resume(struct device *dev, u32 level)
{
      /* TODO */
      return 0;
}
#endif /* CONFIG_PM */

static struct device_driver au1200fb_driver = {
      .name       = "au1200-lcd",
      .bus        = &platform_bus_type,
      .probe            = au1200fb_drv_probe,
      .remove           = au1200fb_drv_remove,
#ifdef CONFIG_PM
      .suspend    = au1200fb_drv_suspend,
      .resume           = au1200fb_drv_resume,
#endif
};

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

/* Kernel driver */

static void au1200fb_setup(void)
{
      char* options = NULL;
      char* this_opt;
      int num_panels = ARRAY_SIZE(known_lcd_panels);
      int panel_idx = -1;

      fb_get_options(DRIVER_NAME, &options);

      if (options) {
            while ((this_opt = strsep(&options,",")) != NULL) {
                  /* Panel option - can be panel name,
                   * "bs" for board-switch, or number/index */
                  if (!strncmp(this_opt, "panel:", 6)) {
                        int i;
                        long int li;
                        char *endptr;
                        this_opt += 6;
                        /* First check for index, which allows
                         * to short circuit this mess */
                        li = simple_strtol(this_opt, &endptr, 0);
                        if (*endptr == '\0') {
                              panel_idx = (int)li;
                        }
                        else if (strcmp(this_opt, "bs") == 0) {
                              extern int board_au1200fb_panel(void);
                              panel_idx = board_au1200fb_panel();
                        }

                        else
                        for (i = 0; i < num_panels; i++) {
                              if (!strcmp(this_opt, known_lcd_panels[i].name)) {
                                    panel_idx = i;
                                    break;
                              }
                        }

                        if ((panel_idx < 0) || (panel_idx >= num_panels)) {
                                    print_warn("Panel %s not supported!", this_opt);
                        }
                        else
                              panel_index = panel_idx;
                  }

                  else if (strncmp(this_opt, "nohwcursor", 10) == 0) {
                        nohwcursor = 1;
                  }

                  /* Unsupported option */
                  else {
                        print_warn("Unsupported option \"%s\"", this_opt);
                  }
            }
      }
}

#ifdef CONFIG_PM
static int au1200fb_pm_callback(au1xxx_power_dev_t *dev,
            au1xxx_request_t request, void *data) {
      int retval = -1;
      unsigned int d = 0;
      unsigned int brightness = 0;

      if (request == AU1XXX_PM_SLEEP) {
            board_au1200fb_panel_shutdown();
      }
      else if (request == AU1XXX_PM_WAKEUP) {
            if(dev->prev_state == SLEEP_STATE)
            {
                  int plane;
                  au1200_setpanel(panel);
                  for (plane = 0; plane < CONFIG_FB_AU1200_DEVS; ++plane)     {
                        struct au1200fb_device *fbdev;
                        fbdev = &_au1200fb_devices[plane];
                        au1200fb_fb_set_par(&fbdev->fb_info);
                  }
            }

            d = *((unsigned int*)data);
            if(d <=10) brightness = 26;
            else if(d<=20) brightness = 51;
            else if(d<=30) brightness = 77;
            else if(d<=40) brightness = 102;
            else if(d<=50) brightness = 128;
            else if(d<=60) brightness = 153;
            else if(d<=70) brightness = 179;
            else if(d<=80) brightness = 204;
            else if(d<=90) brightness = 230;
            else brightness = 255;
            set_brightness(brightness);
      } else if (request == AU1XXX_PM_GETSTATUS) {
            return dev->cur_state;
      } else if (request == AU1XXX_PM_ACCESS) {
            if (dev->cur_state != SLEEP_STATE)
                  return retval;
            else {
                  au1200_setpanel(panel);
            }
      } else if (request == AU1XXX_PM_IDLE) {
      } else if (request == AU1XXX_PM_CLEANUP) {
      }

      return retval;
}
#endif

static int __init au1200fb_init(void)
{
      print_info("" DRIVER_DESC "");

      /* Setup driver with options */
      au1200fb_setup();

      /* Point to the panel selected */
      panel = &known_lcd_panels[panel_index];
      win = &windows[window_index];

      printk(DRIVER_NAME ": Panel %d %s\n", panel_index, panel->name);
      printk(DRIVER_NAME ": Win %d %s\n", window_index, win->name);

      /* Kickstart the panel, the framebuffers/windows come soon enough */
      au1200_setpanel(panel);

      #ifdef CONFIG_PM
      LCD_pm_dev = new_au1xxx_power_device("LCD", &au1200fb_pm_callback, NULL);
      if ( LCD_pm_dev == NULL)
            printk(KERN_INFO "Unable to create a power management device entry for the au1200fb.\n");
      else
            printk(KERN_INFO "Power management device entry for the au1200fb loaded.\n");
      #endif

      return driver_register(&au1200fb_driver);
}

static void __exit au1200fb_cleanup(void)
{
      driver_unregister(&au1200fb_driver);
}

module_init(au1200fb_init);
module_exit(au1200fb_cleanup);

MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");

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