au1200fb.c

为AU1200芯片linux系统所设计的LCD液晶显示驱动程序

/*
 * BRIEF MODULE DESCRIPTION
 *	Au1200 LCD Driver.
 *
 * Copyright 2004 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/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/tty.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <asm/uaccess.h>

#include <asm/au1000.h>
#include <asm/au1xxx_gpio.h>
#include "au1200fb.h"

#include <video/fbcon.h>
#include <video/fbcon-cfb16.h>
#include <video/fbcon-cfb32.h>
#define CMAPSIZE 16

#ifdef CONFIG_MIPS_PB1200
#include <asm/pb1200.h>
#endif

#ifdef CONFIG_MIPS_DB1200
#include <asm/db1200.h>
#endif

#ifdef CONFIG_MIPS_FICMMP
#include <asm/ficmmp.h>
#endif

#define AU1200_LCD_GET_WINENABLE	1
#define AU1200_LCD_SET_WINENABLE	2
#define AU1200_LCD_GET_WINLOCATION	3
#define AU1200_LCD_SET_WINLOCATION	4
#define AU1200_LCD_GET_WINSIZE		5
#define AU1200_LCD_SET_WINSIZE		6
#define AU1200_LCD_GET_BACKCOLOR	7
#define AU1200_LCD_SET_BACKCOLOR	8
#define AU1200_LCD_GET_COLORKEY	9
#define AU1200_LCD_SET_COLORKEY	10
#define AU1200_LCD_GET_PANEL		11
#define AU1200_LCD_SET_PANEL		12

typedef struct au1200_lcd_getset_t
{
	unsigned int subcmd;
	union {
		struct {
			int enable;
		} winenable;
		struct {
			int x, y;
		} winlocation;
		struct {
			int hsz, vsz;
		} winsize;
		struct {
			unsigned int color;
		} backcolor;
		struct {
			unsigned int key;
			unsigned int mask;
		} colorkey;
		struct {
			int panel;
			char desc[80];
		} panel;
	};
} au1200_lcd_getset_t;

AU1200_LCD *lcd = (AU1200_LCD *)AU1200_LCD_ADDR;
static int window_index = 0; /* default is zero */
static int panel_index = 0; /* default is zero */

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];
};

struct panel_settings
{
	unsigned char name[64];
	/* panel physical dimensions */
	uint32 Xres;
	uint32 Yres;
	/* 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);
};

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

static int panel_init (void);
static int panel_shutdown (void);


#if defined(CONFIG_FOCUS_ENHANCEMENTS)
extern int focus_init_hdtv(void);
extern int focus_init_component(void);
extern int focus_init_cvsv(void);
extern int focus_shutdown(void);
#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, // FIX!!!
		{
			{
			/* 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_16BPP565|LCD_WINCTRL1_PO_16BPP|LCD_WINCTRL1_PIPE,
			/* 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, // FIX!!!
		{
			{
			/* xres, yres, xpos, ypos */ 320, 240, 5, 5,
#if 0
			/* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565|LCD_WINCTRL1_PO_16BPP,
#endif
			/* 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,
			},
		},
	},
	/* Need VGA 640 @ 24bpp, @ 32bpp */
	/* Need VGA 800 @ 24bpp, @ 32bpp */
	/* Need VGA 1024 @ 24bpp, @ 32bpp */
} ;

/*
 * Controller configurations for various panels.
 */
static struct panel_settings panels[] =
{
	{ /* Index 0: QVGA 320x240 H:33.3kHz V:110Hz */
		"VGA_320x240",
		320, 240,
		/* 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, /* 96MHz AUXPLL directly */
		/* mode_backlight   */ 0x00000000,
		/* mode_auxpll		*/ 8, /* 96MHz AUXPLL */
		/* device_init		*/ NULL,
		/* device_shutdown	*/ NULL,
	},

	{ /* Index 1: VGA 640x480 H:30.3kHz V:58Hz */
		"VGA_640x480",
		640, 480,
		/* 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,
	},

	{ /* Index 2: SVGA 800x600 H:46.1kHz V:69Hz */
		"SVGA_800x600",
		800, 600,
		/* 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,
	},

	{ /* Index 3: XVGA 1024x768 H:56.2kHz V:70Hz */
		"XVGA_1024x768",
		1024, 768,
		/* 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,
	},

	{ /* Index 4: XVGA 1280x1024 H:68.5kHz V:65Hz */
		"XVGA_1280x1024",
		1280, 1024,
		/* 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,
	},

	{ /* Index 5: Samsung 1024x768 TFT */
		"Samsung_1024x768_TFT",
		1024, 768,
		/* 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		*/ 0x00fcfcfc,
		/* mode_fifoctrl	*/ 0x2f2f2f2f,
		/* mode_toyclksrc   */ 0x00000004, /* 96MHz AUXPLL directly */
		/* mode_backlight   */ 0x00000000,
		/* mode_auxpll		*/ 8, /* 96MHz AUXPLL */
		/* device_init		*/ panel_init,
		/* device_shutdown	*/ panel_shutdown,
	},

	{ /* Index 6: Toshiba 640x480 TFT */
		"Toshiba_640x480_TFT",
		640, 480,
		/* 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, /* 96MHz AUXPLL directly */
		/* mode_backlight   */ 0x00000000,
		/* mode_auxpll		*/ 8, /* 96MHz AUXPLL */
		/* device_init		*/ panel_init,
		/* device_shutdown	*/ panel_shutdown,
	},

	{ /* Index 7: Sharp 320x240 TFT */
		"Sharp_320x240_TFT",
		320, 240,
		/* 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, /* 96MHz AUXPLL directly */
		/* mode_backlight   */ 0x00000000,
		/* mode_auxpll		*/ 8, /* 96MHz AUXPLL */
		/* device_init		*/ panel_init,
		/* device_shutdown	*/ panel_shutdown,
	},
#if defined(CONFIG_FOCUS_ENHANCEMENTS)
	{ /* Index 8: Focus FS453 TV-Out 640x480 */
		"FS453_640x480 (Composite/S-Video)",
		640, 480,
		/* mode_screen 		*/ LCD_SCREEN_SX_N(640) | LCD_SCREEN_SY_N(480),
		/* mode_horztiming	*/ LCD_HORZTIMING_HND2_N(143) | LCD_HORZTIMING_HND1_N(143) | LCD_HORZTIMING_HPW_N(10),
		/* mode_verttiming	*/ LCD_VERTTIMING_VND2_N(30) | LCD_VERTTIMING_VND1_N(30) | LCD_VERTTIMING_VPW_N(5),
		/* mode_clkcontrol	*/ 0x00480000 | (1<<17) | (1<<18), /* External Clock, 1:1 clock ratio */
		/* mode_pwmdiv		*/ 0x00000000,
		/* mode_pwmhi		*/ 0x00000000,
		/* mode_outmask		*/ 0x00FFFFFF,
		/* mode_fifoctrl	*/ 0x2f2f2f2f,
		/* mode_toyclksrc   */ 0x00000000,
		/* mode_backlight   */ 0x00000000,
		/* mode_auxpll		*/ 8, /* 96MHz AUXPLL */
		/* device_init		*/ focus_init_cvsv,
		/* device_shutdown	*/ focus_shutdown,
	},
	
	{ /* Index 9: Focus FS453 TV-Out 640x480 */
		"FS453_640x480 (Component Video)",
		640, 480,
		/* mode_screen 		*/ LCD_SCREEN_SX_N(640) | LCD_SCREEN_SY_N(480),
		/* mode_horztiming	*/ LCD_HORZTIMING_HND2_N(143) | LCD_HORZTIMING_HND1_N(143) | LCD_HORZTIMING_HPW_N(10),
		/* mode_verttiming	*/ LCD_VERTTIMING_VND2_N(30) | LCD_VERTTIMING_VND1_N(30) | LCD_VERTTIMING_VPW_N(5),
		/* mode_clkcontrol	*/ 0x00480000 | (1<<17) | (1<<18), /* External Clock, 1:1 clock ratio */
		/* mode_pwmdiv		*/ 0x00000000,
		/* mode_pwmhi		*/ 0x00000000,
		/* mode_outmask		*/ 0x00FFFFFF,
		/* mode_fifoctrl	*/ 0x2f2f2f2f,
		/* mode_toyclksrc   */ 0x00000000,
		/* mode_backlight   */ 0x00000000,
		/* mode_auxpll		*/ 8, /* 96MHz AUXPLL */
		/* device_init		*/ focus_init_component,
		/* device_shutdown	*/ focus_shutdown,
	},
	
	{ /* Index 10: Focus FS453 TV-Out 640x480 */
		"FS453_640x480 (HDTV)",
		720, 480,
		/* mode_screen 		*/ LCD_SCREEN_SX_N(720) | LCD_SCREEN_SY_N(480),
		/* mode_horztiming	*/ LCD_HORZTIMING_HND2_N(28) | LCD_HORZTIMING_HND1_N(46) | LCD_HORZTIMING_HPW_N(64),
		/* mode_verttiming	*/ LCD_VERTTIMING_VND2_N(7) | LCD_VERTTIMING_VND1_N(31) | LCD_VERTTIMING_VPW_N(7),
		/* mode_clkcontrol	*/ 0x00480000 | (1<<17) | (1<<18), /* External Clock, 1:1 clock ratio */
		/* mode_pwmdiv		*/ 0x00000000,
		/* mode_pwmhi		*/ 0x00000000,
		/* mode_outmask		*/ 0x00FFFFFF,
		/* mode_fifoctrl	*/ 0x2f2f2f2f,
		/* mode_toyclksrc   */ 0x00000000,
		/* mode_backlight   */ 0x00000000,
		/* mode_auxpll		*/ 8, /* 96MHz AUXPLL */
		/* device_init		*/ focus_init_hdtv,
		/* device_shutdown	*/ focus_shutdown,
	},
#endif
};

#define NUM_PANELS (sizeof(panels) / sizeof(struct panel_settings))

static struct window_settings *win;
static struct panel_settings *panel;

struct au1200fb_info {
	struct fb_info_gen gen;
	unsigned long fb_virt_start;
	unsigned long fb_size;
	unsigned long fb_phys;
	int mmaped;
	int nohwcursor;
	int noblanking;

	struct { unsigned red, green, blue, pad; } palette[256];

#if defined(FBCON_HAS_CFB16)
	u16 fbcon_cmap16[16];
#endif
#if defined(FBCON_HAS_CFB32)
	u32 fbcon_cmap32[16];
#endif
};


struct au1200fb_par {
    struct fb_var_screeninfo var;
	
	int line_length;  // in bytes
	int cmap_len;     // color-map length
};

#ifndef CONFIG_FB_AU1200_DEVS
#define CONFIG_FB_AU1200_DEVS 1
#endif

static struct au1200fb_info fb_infos[CONFIG_FB_AU1200_DEVS];
static struct au1200fb_par fb_pars[CONFIG_FB_AU1200_DEVS];
static struct display disps[CONFIG_FB_AU1200_DEVS];

int au1200fb_init(void);
void au1200fb_setup(char *options, int *ints);
static int au1200fb_mmap(struct fb_info *fb, struct file *file, 
		struct vm_area_struct *vma);
static int au1200_blank(int blank_mode, struct fb_info_gen *info);
static int au1200fb_ioctl(struct inode *inode, struct file *file, u_int cmd,
			  u_long arg, int con, struct fb_info *info);

void au1200_nocursor(struct display *p, int mode, int xx, int yy){};

static int au1200_setlocation (int plane, int xpos, int ypos);
static int au1200_setsize (int plane, int xres, int yres);
static void au1200_setmode(int plane);
static void au1200_setpanel (struct panel_settings *newpanel);

static struct fb_ops au1200fb_ops = {
	owner:		THIS_MODULE,
	fb_get_fix:	fbgen_get_fix,
	fb_get_var:	fbgen_get_var,
	fb_set_var:	fbgen_set_var,
	fb_get_cmap:	fbgen_get_cmap,
	fb_set_cmap:	fbgen_set_cmap,
	fb_pan_display: fbgen_pan_display,
        fb_ioctl:       au1200fb_ioctl,
	fb_mmap:        au1200fb_mmap,
};


static int panel_init (void)
{
#if defined(CONFIG_MIPS_PB1200) || defined(CONFIG_MIPS_DB1200)
	/* Apply power */
    BCSR *bcsr = (BCSR *)BCSR_KSEG1_ADDR;
	bcsr->board |= (BCSR_BOARD_LCDVEE | BCSR_BOARD_LCDVDD | BCSR_BOARD_LCDBL);
	//printk("panel_init(%s)\n", panel->name);
#elif defined(CONFIG_MIPS_FICMMP)
	ficmmp_config_clear(FICMMP_CONFIG_LCMDATAOUT);	//Enable data buffers
	ficmmp_config_set(FICMMP_CONFIG_LCMPWREN | FICMMP_CONFIG_LCMEN);			//Take LCD out of reset
#endif
}

static int panel_shutdown (void)
{
#if defined(CONFIG_MIPS_PB1200) || defined(CONFIG_MIPS_DB1200)
	/* Remove power */
    BCSR *bcsr = (BCSR *)BCSR_KSEG1_ADDR;
	bcsr->board &= ~(BCSR_BOARD_LCDVEE | BCSR_BOARD_LCDVDD | BCSR_BOARD_LCDBL);
	//printk("panel_shutdown(%s)\n", panel->name);
#elif defined(CONFIG_MIPS_FICMMP)
	ficmmp_config_set(FICMMP_CONFIG_LCMDATAOUT);	//Disable data buffers
	ficmmp_config_clear(FICMMP_CONFIG_LCMEN | FICMMP_CONFIG_LCMPWREN);	//Put LCD in reset, remove power
#endif
}

static int