linux-vybrid_public/drivers/video/radeonfb.c

/*
 *	drivers/video/radeonfb.c
 *	framebuffer driver for ATI Radeon chipset video boards
 *
 *	Copyright 2000	Ani Joshi <ajoshi@kernel.crashing.org>
 *
 *
 *	ChangeLog:
 *	2000-08-03	initial version 0.0.1
 *	2000-09-10	more bug fixes, public release 0.0.5
 *	2001-02-19	mode bug fixes, 0.0.7
 *	2001-07-05	fixed scrolling issues, engine initialization,
 *			and minor mode tweaking, 0.0.9
 *	2001-09-07	Radeon VE support, Nick Kurshev
 *			blanking, pan_display, and cmap fixes, 0.1.0
 *	2001-10-10	Radeon 7500 and 8500 support, and experimental
 *			flat panel support, 0.1.1
 *	2001-11-17	Radeon M6 (ppc) support, Daniel Berlin, 0.1.2
 *	2001-11-18	DFP fixes, Kevin Hendricks, 0.1.3
 *	2001-11-29	more cmap, backlight fixes, Benjamin Herrenschmidt
 *	2002-01-18	DFP panel detection via BIOS, Michael Clark, 0.1.4
 *	2002-06-02	console switching, mode set fixes, accel fixes
 *	2002-06-03	MTRR support, Peter Horton, 0.1.5
 *	2002-09-21	rv250, r300, m9 initial support,
 *			added mirror option, 0.1.6
 *
 *	Special thanks to ATI DevRel team for their hardware donations.
 *
 */


#define RADEON_VERSION	"0.1.6"


#include <linux/config.h>
#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/ioport.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/vmalloc.h>

#include <asm/io.h>
#include <asm/uaccess.h>
#if defined(__powerpc__)
#include <asm/prom.h>
#include <asm/pci-bridge.h>
#include "macmodes.h"

#ifdef CONFIG_NVRAM
#include <linux/nvram.h>
#endif

#ifdef CONFIG_PMAC_BACKLIGHT
#include <asm/backlight.h>
#endif

#ifdef CONFIG_BOOTX_TEXT
#include <asm/btext.h>
#endif

#ifdef CONFIG_ADB_PMU
#include <linux/adb.h>
#include <linux/pmu.h>
#endif

#endif /* __powerpc__ */

#ifdef CONFIG_MTRR
#include <asm/mtrr.h>
#endif

#include <video/radeon.h>
#include <linux/radeonfb.h>

#define DEBUG  0

#if DEBUG
#define RTRACE		printk
#else
#define RTRACE		if(0) printk
#endif

// XXX
#undef CONFIG_PMAC_PBOOK


enum radeon_chips {
	RADEON_QD,
	RADEON_QE,
	RADEON_QF,
	RADEON_QG,
	RADEON_QY,
	RADEON_QZ,
	RADEON_LW,
	RADEON_LX,
	RADEON_LY,
	RADEON_LZ,
	RADEON_QL,
	RADEON_QN,
	RADEON_QO,
	RADEON_Ql,
	RADEON_BB,
	RADEON_QW,
	RADEON_QX,
	RADEON_Id,
	RADEON_Ie,
	RADEON_If,
	RADEON_Ig,
	RADEON_Ya,
	RADEON_Yd,
	RADEON_Ld,
	RADEON_Le,
	RADEON_Lf,
	RADEON_Lg,
	RADEON_ND,
	RADEON_NE,
	RADEON_NF,
	RADEON_NG,
	RADEON_QM
};

enum radeon_arch {
	RADEON_R100,
	RADEON_RV100,
	RADEON_R200,
	RADEON_RV200,
	RADEON_RV250,
	RADEON_R300,
	RADEON_M6,
	RADEON_M7,
	RADEON_M9
};

static struct radeon_chip_info {
	const char *name;
	unsigned char arch;
} radeon_chip_info[] __devinitdata = {
	{ "QD", RADEON_R100 },
	{ "QE", RADEON_R100 },
	{ "QF", RADEON_R100 },
	{ "QG", RADEON_R100 },
	{ "VE QY", RADEON_RV100 },
	{ "VE QZ", RADEON_RV100 },
	{ "M7 LW", RADEON_M7 },
	{ "M7 LX", RADEON_M7 },
	{ "M6 LY", RADEON_M6 },
	{ "M6 LZ", RADEON_M6 },
	{ "8500 QL", RADEON_R200 },
	{ "8500 QN", RADEON_R200 },
	{ "8500 QO", RADEON_R200 },
	{ "8500 Ql", RADEON_R200 },
	{ "8500 BB", RADEON_R200 },
	{ "7500 QW", RADEON_RV200 },
	{ "7500 QX", RADEON_RV200 },
	{ "9000 Id", RADEON_RV250 },
	{ "9000 Ie", RADEON_RV250 },
	{ "9000 If", RADEON_RV250 },
	{ "9000 Ig", RADEON_RV250 },
	{ "M9 Ld", RADEON_M9 },
	{ "M9 Le", RADEON_M9 },
	{ "M9 Lf", RADEON_M9 },
	{ "M9 Lg", RADEON_M9 },
	{ "9700 ND", RADEON_R300 },
	{ "9700 NE", RADEON_R300 },
	{ "9700 NF", RADEON_R300 },
	{ "9700 NG", RADEON_R300 },
	{ "9100 QM", RADEON_R200 }
};


enum radeon_montype
{
	MT_NONE,
	MT_CRT,		/* CRT */
	MT_LCD,		/* LCD */
	MT_DFP,		/* DVI */
	MT_CTV,		/* composite TV */
	MT_STV		/* S-Video out */
};


static struct pci_device_id radeonfb_pci_table[] = {
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_QD, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_QD},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_QE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_QE},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_QF, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_QF},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_QG, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_QG},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_QY, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_QY},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_QZ, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_QZ},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_LW, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_LW},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_LX, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_LX},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_LY, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_LY},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_LZ, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_LZ},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_QL, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_QL},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_QN, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_QN},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_QO, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_QO},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_Ql, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_Ql},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_BB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_BB},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_QW, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_QW},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_QX, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_QX},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_Id, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_Id},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_Ie, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_Ie},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_If, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_If},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_Ig, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_Ig},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_Ya, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_Ya},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_Yd, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_Yd},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_Ld, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_Ld},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_Le, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_Le},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_Lf, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_Lf},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_Lg, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_Lg},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_ND, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_ND},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_NE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_NE},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_NF, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_NF},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_NG, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_NG},
	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_QM, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RADEON_QM},
	{ 0, }
};
MODULE_DEVICE_TABLE(pci, radeonfb_pci_table);


typedef struct {
	u16 reg;
	u32 val;
} reg_val;


/* these common regs are cleared before mode setting so they do not
 * interfere with anything
 */
static reg_val common_regs[] = {
	{ OVR_CLR, 0 },	
	{ OVR_WID_LEFT_RIGHT, 0 },
	{ OVR_WID_TOP_BOTTOM, 0 },
	{ OV0_SCALE_CNTL, 0 },
	{ SUBPIC_CNTL, 0 },
	{ VIPH_CONTROL, 0 },
	{ I2C_CNTL_1, 0 },
	{ GEN_INT_CNTL, 0 },
	{ CAP0_TRIG_CNTL, 0 },
};

static reg_val common_regs_m6[] = {
	{ OVR_CLR,      0 },
	{ OVR_WID_LEFT_RIGHT,   0 },
	{ OVR_WID_TOP_BOTTOM,   0 },
	{ OV0_SCALE_CNTL,   0 },
	{ SUBPIC_CNTL,      0 },
	{ GEN_INT_CNTL,     0 },
	{ CAP0_TRIG_CNTL,   0 } 
};

typedef struct {
        u8 clock_chip_type;
        u8 struct_size;
        u8 accelerator_entry;
        u8 VGA_entry;
        u16 VGA_table_offset;
        u16 POST_table_offset;
        u16 XCLK;
        u16 MCLK;
        u8 num_PLL_blocks;
        u8 size_PLL_blocks;
        u16 PCLK_ref_freq;
        u16 PCLK_ref_divider;
        u32 PCLK_min_freq;
        u32 PCLK_max_freq;
        u16 MCLK_ref_freq;
        u16 MCLK_ref_divider;
        u32 MCLK_min_freq;
        u32 MCLK_max_freq;
        u16 XCLK_ref_freq;
        u16 XCLK_ref_divider;
        u32 XCLK_min_freq;
        u32 XCLK_max_freq;
} __attribute__ ((packed)) PLL_BLOCK;


struct pll_info {
	int ppll_max;
	int ppll_min;
	int xclk;
	int ref_div;
	int ref_clk;
};


struct ram_info {
	int ml;
	int mb;
	int trcd;
	int trp;
	int twr;
	int cl;
	int tr2w;
	int loop_latency;
	int rloop;
};


struct radeon_regs {
	/* CRTC regs */
	u32 crtc_h_total_disp;
	u32 crtc_h_sync_strt_wid;
	u32 crtc_v_total_disp;
	u32 crtc_v_sync_strt_wid;
	u32 crtc_pitch;
	u32 crtc_gen_cntl;
	u32 crtc_ext_cntl;
	u32 dac_cntl;

	u32 flags;
	u32 pix_clock;
	int xres, yres;

	/* DDA regs */
	u32 dda_config;
	u32 dda_on_off;

	/* PLL regs */
	u32 ppll_div_3;
	u32 ppll_ref_div;
	u32 vclk_ecp_cntl;
	
	/* Flat panel regs */
	u32 fp_crtc_h_total_disp;
	u32 fp_crtc_v_total_disp;
	u32 fp_gen_cntl;
	u32 fp_h_sync_strt_wid;
	u32 fp_horz_stretch;
	u32 fp_panel_cntl;
	u32 fp_v_sync_strt_wid;
	u32 fp_vert_stretch;
	u32 lvds_gen_cntl;
	u32 lvds_pll_cntl;
	u32 tmds_crc;
	u32 tmds_transmitter_cntl;

#if defined(__BIG_ENDIAN)
	u32 surface_cntl;
#endif
};


struct radeonfb_info {
	struct fb_info info;

	struct radeon_regs state;
	struct radeon_regs init_state;

	char name[32];
	char ram_type[12];

	unsigned long mmio_base_phys;
	unsigned long fb_base_phys;

	void __iomem *mmio_base;
	void __iomem *fb_base;

	struct pci_dev *pdev;

	unsigned char *EDID;
	unsigned char __iomem *bios_seg;

	u32 pseudo_palette[17];
	struct { u8 red, green, blue, pad; } palette[256];

	int chipset;
	unsigned char arch;
	int video_ram;
	u8 rev;
	int pitch, bpp, depth;
	int xres, yres, pixclock;
	int xres_virtual, yres_virtual;
	u32 accel_flags;

	int use_default_var;
	int got_dfpinfo;

	int hasCRTC2;
	int crtDisp_type;
	int dviDisp_type;

	int panel_xres, panel_yres;
	int clock;
	int hOver_plus, hSync_width, hblank;
	int vOver_plus, vSync_width, vblank;
	int hAct_high, vAct_high, interlaced;
	int synct, misc;

	u32 dp_gui_master_cntl;

	struct pll_info pll;
	int pll_output_freq, post_div, fb_div;

	struct ram_info ram;

	int mtrr_hdl;

#ifdef CONFIG_PMAC_PBOOK
	int pm_reg;
	u32 save_regs[64];
	u32 mdll, mdll2;
#endif /* CONFIG_PMAC_PBOOK */
	int asleep;
	
	struct radeonfb_info *next;
};


static struct fb_var_screeninfo radeonfb_default_var = {
        640, 480, 640, 480, 0, 0, 8, 0,
        {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0},
        0, 0, -1, -1, 0, 39721, 40, 24, 32, 11, 96, 2,
        0, FB_VMODE_NONINTERLACED
};

/*
 * IO macros
 */

#define INREG8(addr)		readb((rinfo->mmio_base)+addr)
#define OUTREG8(addr,val)	writeb(val, (rinfo->mmio_base)+addr)
#define INREG(addr)		readl((rinfo->mmio_base)+addr)
#define OUTREG(addr,val)	writel(val, (rinfo->mmio_base)+addr)

#define OUTPLL(addr,val)	\
	do {	\
		OUTREG8(CLOCK_CNTL_INDEX, (addr & 0x0000003f) | 0x00000080); \
		OUTREG(CLOCK_CNTL_DATA, val); \
	} while(0)

#define OUTPLLP(addr,val,mask)  					\
	do {								\
		unsigned int _tmp = INPLL(addr);			\
		_tmp &= (mask);						\
		_tmp |= (val);						\
		OUTPLL(addr, _tmp);					\
	} while (0)

#define OUTREGP(addr,val,mask)  					\
	do {								\
		unsigned int _tmp = INREG(addr);			\
		_tmp &= (mask);						\
		_tmp |= (val);						\
		OUTREG(addr, _tmp);					\
	} while (0)


static __inline__ u32 _INPLL(struct radeonfb_info *rinfo, u32 addr)
{
	OUTREG8(CLOCK_CNTL_INDEX, addr & 0x0000003f);
	return (INREG(CLOCK_CNTL_DATA));
}

#define INPLL(addr)		_INPLL(rinfo, addr)

#define PRIMARY_MONITOR(rinfo)	((rinfo->dviDisp_type != MT_NONE) &&	\
				 (rinfo->dviDisp_type != MT_STV) &&	\
				 (rinfo->dviDisp_type != MT_CTV) ?	\
				 rinfo->dviDisp_type : rinfo->crtDisp_type)

static char *GET_MON_NAME(int type)
{
	char *pret = NULL;

	switch (type) {
		case MT_NONE:
			pret = "no";
			break;
		case MT_CRT:
			pret = "CRT";
			break;
		case MT_DFP:
			pret = "DFP";
			break;
		case MT_LCD:
			pret = "LCD";
			break;
		case MT_CTV:
			pret = "CTV";
			break;
		case MT_STV:
			pret = "STV";
			break;
	}

	return pret;
}


/*
 * 2D engine routines
 */

static __inline__ void radeon_engine_flush (struct radeonfb_info *rinfo)
{
	int i;

	/* initiate flush */
	OUTREGP(RB2D_DSTCACHE_CTLSTAT, RB2D_DC_FLUSH_ALL,
	        ~RB2D_DC_FLUSH_ALL);

	for (i=0; i < 2000000; i++) {
		if (!(INREG(RB2D_DSTCACHE_CTLSTAT) & RB2D_DC_BUSY))
			break;
	}
}


static __inline__ void _radeon_fifo_wait (struct radeonfb_info *rinfo, int entries)
{
	int i;

	for (i=0; i<2000000; i++)
		if ((INREG(RBBM_STATUS) & 0x7f) >= entries)
			return;
}


static __inline__ void _radeon_engine_idle (struct radeonfb_info *rinfo)
{
	int i;

	/* ensure FIFO is empty before waiting for idle */
	_radeon_fifo_wait (rinfo, 64);

	for (i=0; i<2000000; i++) {
		if (((INREG(RBBM_STATUS) & GUI_ACTIVE)) == 0) {
			radeon_engine_flush (rinfo);
			return;
		}
	}
}


#define radeon_engine_idle()		_radeon_engine_idle(rinfo)
#define radeon_fifo_wait(entries)	_radeon_fifo_wait(rinfo,entries)



/*
 * helper routines
 */

static __inline__ u32 radeon_get_dstbpp(u16 depth)
{
	switch (depth) {
		case 8:
			return DST_8BPP;
		case 15:
			return DST_15BPP;
		case 16:
			return DST_16BPP;
		case 32:
			return DST_32BPP;
		default:
			return 0;
	}
}


static inline int var_to_depth(const struct fb_var_screeninfo *var)
{
	if (var->bits_per_pixel != 16)
		return var->bits_per_pixel;
	return (var->green.length == 6) ? 16 : 15;
}


static void _radeon_engine_reset(struct radeonfb_info *rinfo)
{
	u32 clock_cntl_index, mclk_cntl, rbbm_soft_reset;

	radeon_engine_flush (rinfo);

	clock_cntl_index = INREG(CLOCK_CNTL_INDEX);
	mclk_cntl = INPLL(MCLK_CNTL);

	OUTPLL(MCLK_CNTL, (mclk_cntl |
			   FORCEON_MCLKA |
			   FORCEON_MCLKB |
			   FORCEON_YCLKA |
			   FORCEON_YCLKB |
			   FORCEON_MC |
			   FORCEON_AIC));
	rbbm_soft_reset = INREG(RBBM_SOFT_RESET);

	OUTREG(RBBM_SOFT_RESET, rbbm_soft_reset |
				SOFT_RESET_CP |
				SOFT_RESET_HI |
				SOFT_RESET_SE |
				SOFT_RESET_RE |
				SOFT_RESET_PP |
				SOFT_RESET_E2 |
				SOFT_RESET_RB);
	INREG(RBBM_SOFT_RESET);
	OUTREG(RBBM_SOFT_RESET, rbbm_soft_reset & (u32)
				~(SOFT_RESET_CP |
				  SOFT_RESET_HI |
				  SOFT_RESET_SE |
				  SOFT_RESET_RE |
				  SOFT_RESET_PP |
				  SOFT_RESET_E2 |
				  SOFT_RESET_RB));
	INREG(RBBM_SOFT_RESET);

	OUTPLL(MCLK_CNTL, mclk_cntl);
	OUTREG(CLOCK_CNTL_INDEX, clock_cntl_index);
	OUTREG(RBBM_SOFT_RESET, rbbm_soft_reset);

	return;
}

#define radeon_engine_reset()		_radeon_engine_reset(rinfo)


static __inline__ int round_div(int num, int den)
{
        return (num + (den / 2)) / den;
}



static __inline__ int min_bits_req(int val)
{
        int bits_req = 0;
                
        if (val == 0)
                bits_req = 1;
                        
        while (val) {
                val >>= 1;
                bits_req++;
        }       

        return (bits_req);
}


static __inline__ int _max(int val1, int val2)
{
        if (val1 >= val2)
                return val1;
        else
                return val2;
}                       



/*
 * globals
 */

#ifndef MODULE
static char *mode_option;
#endif

static char noaccel = 0;
static char mirror = 0;
static int panel_yres = 0;
static char force_dfp = 0;
static struct radeonfb_info *board_list = NULL;
static char nomtrr = 0;

/*
 * prototypes
 */

static void radeon_save_state (struct radeonfb_info *rinfo,
                               struct radeon_regs *save);
static void radeon_engine_init (struct radeonfb_info *rinfo);
static void radeon_write_mode (struct radeonfb_info *rinfo,
                               struct radeon_regs *mode);
static int __devinit radeon_set_fbinfo (struct radeonfb_info *rinfo);
static int __devinit radeon_init_disp (struct radeonfb_info *rinfo);
static int radeon_init_disp_var (struct radeonfb_info *rinfo, struct fb_var_screeninfo *var);
static void __iomem *radeon_find_rom(struct radeonfb_info *rinfo);
static void radeon_get_pllinfo(struct radeonfb_info *rinfo, void __iomem *bios_seg);
static void radeon_get_moninfo (struct radeonfb_info *rinfo);
static int radeon_get_dfpinfo (struct radeonfb_info *rinfo);
static int radeon_get_dfpinfo_BIOS(struct radeonfb_info *rinfo);
static void radeon_get_EDID(struct radeonfb_info *rinfo);
static int radeon_dfp_parse_EDID(struct radeonfb_info *rinfo);
static void radeon_update_default_var(struct radeonfb_info *rinfo);

#ifdef CONFIG_PPC_OF

static int radeon_read_OF (struct radeonfb_info *rinfo);
static int radeon_get_EDID_OF(struct radeonfb_info *rinfo);
extern struct device_node *pci_device_to_OF_node(struct pci_dev *dev);

#ifdef CONFIG_PMAC_PBOOK
int radeon_sleep_notify(struct pmu_sleep_notifier *self, int when);
static struct pmu_sleep_notifier radeon_sleep_notifier = {
	radeon_sleep_notify, SLEEP_LEVEL_VIDEO,
};
#endif /* CONFIG_PMAC_PBOOK */
#ifdef CONFIG_PMAC_BACKLIGHT
static int radeon_set_backlight_enable(int on, int level, void *data);
static int radeon_set_backlight_level(int level, void *data);
static struct backlight_controller radeon_backlight_controller = {
	radeon_set_backlight_enable,
	radeon_set_backlight_level
};
#endif /* CONFIG_PMAC_BACKLIGHT */

#endif /* CONFIG_PPC_OF */


static void __iomem *radeon_find_rom(struct radeonfb_info *rinfo)
{       
#if defined(__i386__)
        u32  segstart;
        char __iomem *rom_base;
        char __iomem *rom;
        int  stage;
        int  i,j;       
        char aty_rom_sig[] = "761295520";
        char *radeon_sig[] = {
          "RG6",
          "RADEON"
        };
                                                
        for(segstart=0x000c0000; segstart<0x000f0000; segstart+=0x00001000) {
                        
                stage = 1;
                
                rom_base = ioremap(segstart, 0x1000);

                if ((*rom_base == 0x55) && (((*(rom_base + 1)) & 0xff) == 0xaa))
                        stage = 2;
                
                    
                if (stage != 2) {
                        iounmap(rom_base);
                        continue;
                }
                                              
                rom = rom_base;
                     
                for (i = 0; (i < 128 - strlen(aty_rom_sig)) && (stage != 3); i++) {
                        if (aty_rom_sig[0] == *rom)
                                if (strncmp(aty_rom_sig, rom,
                                                strlen(aty_rom_sig)) == 0)
                                        stage = 3;
                        rom++;
                }
                if (stage != 3) {
                        iounmap(rom_base);
                        continue;
                }
                rom = rom_base;
        
                for (i = 0; (i < 512) && (stage != 4); i++) {
                    for(j = 0;j < sizeof(radeon_sig)/sizeof(char *);j++) {
                        if (radeon_sig[j][0] == *rom)
                                if (strncmp(radeon_sig[j], rom,
                                            strlen(radeon_sig[j])) == 0) {
                                              stage = 4;
                                              break;
                                            }
                    }                           
                        rom++;
                }       
                if (stage != 4) {
                        iounmap(rom_base);
                        continue;
                }       
                
                return rom_base;
        }
#endif          
        return NULL;
}




static void radeon_get_pllinfo(struct radeonfb_info *rinfo, void __iomem *bios_seg)
{
        void __iomem *bios_header;
        void __iomem *header_ptr;
        u16 bios_header_offset, pll_info_offset;
        PLL_BLOCK pll;

	if (bios_seg) {
	        bios_header = bios_seg + 0x48L;
       		header_ptr  = bios_header;
        
        	bios_header_offset = readw(header_ptr);
	        bios_header = bios_seg + bios_header_offset;
        	bios_header += 0x30;
        
        	header_ptr = bios_header;
        	pll_info_offset = readw(header_ptr);
        	header_ptr = bios_seg + pll_info_offset;
        
        	memcpy_fromio(&pll, header_ptr, 50);
        
        	rinfo->pll.xclk = (u32)pll.XCLK;
        	rinfo->pll.ref_clk = (u32)pll.PCLK_ref_freq;
        	rinfo->pll.ref_div = (u32)pll.PCLK_ref_divider;
        	rinfo->pll.ppll_min = pll.PCLK_min_freq;
        	rinfo->pll.ppll_max = pll.PCLK_max_freq;

		printk("radeonfb: ref_clk=%d, ref_div=%d, xclk=%d from BIOS\n",
			rinfo->pll.ref_clk, rinfo->pll.ref_div, rinfo->pll.xclk);
	} else {
#ifdef CONFIG_PPC_OF
		if (radeon_read_OF(rinfo)) {
			unsigned int tmp, Nx, M, ref_div, xclk;

			tmp = INPLL(M_SPLL_REF_FB_DIV);
			ref_div = INPLL(PPLL_REF_DIV) & 0x3ff;

			Nx = (tmp & 0xff00) >> 8;
			M = (tmp & 0xff);
			xclk = ((((2 * Nx * rinfo->pll.ref_clk) + (M)) /
				(2 * M)));

			rinfo->pll.xclk = xclk;
			rinfo->pll.ref_div = ref_div;
			rinfo->pll.ppll_min = 12000;
			rinfo->pll.ppll_max = 35000;

			printk("radeonfb: ref_clk=%d, ref_div=%d, xclk=%d from OF\n",
				rinfo->pll.ref_clk, rinfo->pll.ref_div, rinfo->pll.xclk);

			return;
		}
#endif
		/* no BIOS or BIOS not found, use defaults */
		switch (rinfo->chipset) {
			case PCI_DEVICE_ID_ATI_RADEON_QW:
			case PCI_DEVICE_ID_ATI_RADEON_QX:
				rinfo->pll.ppll_max = 35000;
				rinfo->pll.ppll_min = 12000;
				rinfo->pll.xclk = 23000;
				rinfo->pll.ref_div = 12;
				rinfo->pll.ref_clk = 2700;
				break;
			case PCI_DEVICE_ID_ATI_RADEON_QL:
			case PCI_DEVICE_ID_ATI_RADEON_QN:
			case PCI_DEVICE_ID_ATI_RADEON_QO:
			case PCI_DEVICE_ID_ATI_RADEON_Ql:
			case PCI_DEVICE_ID_ATI_RADEON_BB:
				rinfo->pll.ppll_max = 35000;
				rinfo->pll.ppll_min = 12000;
				rinfo->pll.xclk = 27500;
				rinfo->pll.ref_div = 12;
				rinfo->pll.ref_clk = 2700;
				break;
			case PCI_DEVICE_ID_ATI_RADEON_Id:
			case PCI_DEVICE_ID_ATI_RADEON_Ie:
			case PCI_DEVICE_ID_ATI_RADEON_If:
			case PCI_DEVICE_ID_ATI_RADEON_Ig:
				rinfo->pll.ppll_max = 35000;
				rinfo->pll.ppll_min = 12000;
				rinfo->pll.xclk = 25000;
				rinfo->pll.ref_div = 12;
				rinfo->pll.ref_clk = 2700;
				break;
			case PCI_DEVICE_ID_ATI_RADEON_ND:
			case PCI_DEVICE_ID_ATI_RADEON_NE:
			case PCI_DEVICE_ID_ATI_RADEON_NF:
			case PCI_DEVICE_ID_ATI_RADEON_NG:
				rinfo->pll.ppll_max = 40000;
				rinfo->pll.ppll_min = 20000;
				rinfo->pll.xclk = 27000;
				rinfo->pll.ref_div = 12;
				rinfo->pll.ref_clk = 2700;
				break;
			case PCI_DEVICE_ID_ATI_RADEON_QD:
			case PCI_DEVICE_ID_ATI_RADEON_QE:
			case PCI_DEVICE_ID_ATI_RADEON_QF:
			case PCI_DEVICE_ID_ATI_RADEON_QG:
			default:
				rinfo->pll.ppll_max = 35000;
				rinfo->pll.ppll_min = 12000;
				rinfo->pll.xclk = 16600;
				rinfo->pll.ref_div = 67;
				rinfo->pll.ref_clk = 2700;
				break;
		}

		printk("radeonfb: ref_clk=%d, ref_div=%d, xclk=%d defaults\n",
			rinfo->pll.ref_clk, rinfo->pll.ref_div, rinfo->pll.xclk);
	}
}


static void radeon_get_moninfo (struct radeonfb_info *rinfo)
{
	unsigned int tmp;

	if (force_dfp) {
		rinfo->dviDisp_type = MT_DFP;
		return;
	}

	tmp = INREG(BIOS_4_SCRATCH);
	printk(KERN_DEBUG "radeon_get_moninfo: bios 4 scratch = %x\n", tmp);
	
	if (rinfo->hasCRTC2) {
		/* primary DVI port */
		if (tmp & 0x08)
			rinfo->dviDisp_type = MT_DFP;
		else if (tmp & 0x4)
			rinfo->dviDisp_type = MT_LCD;
		else if (tmp & 0x200)
			rinfo->dviDisp_type = MT_CRT;
		else if (tmp & 0x10)
			rinfo->dviDisp_type = MT_CTV;
		else if (tmp & 0x20)
			rinfo->dviDisp_type = MT_STV;

		/* secondary CRT port */
		if (tmp & 0x2)
			rinfo->crtDisp_type = MT_CRT;
		else if (tmp & 0x800)
			rinfo->crtDisp_type = MT_DFP;
		else if (tmp & 0x400)
			rinfo->crtDisp_type = MT_LCD;
		else if (tmp & 0x1000)
			rinfo->crtDisp_type = MT_CTV;
		else if (tmp & 0x2000)
			rinfo->crtDisp_type = MT_STV;
	} else {
		rinfo->dviDisp_type = MT_NONE;

		tmp = INREG(FP_GEN_CNTL);

		if (tmp & FP_EN_TMDS)
			rinfo->crtDisp_type = MT_DFP;
		else
			rinfo->crtDisp_type = MT_CRT;
	}
}



static void radeon_get_EDID(struct radeonfb_info *rinfo)
{
#ifdef CONFIG_PPC_OF
	if (!radeon_get_EDID_OF(rinfo))
		RTRACE("radeonfb: could not retrieve EDID from OF\n");
#else
	/* XXX use other methods later */
#endif
}


#ifdef CONFIG_PPC_OF
static int radeon_get_EDID_OF(struct radeonfb_info *rinfo)
{
        struct device_node *dp;
        unsigned char *pedid = NULL;
        static char *propnames[] = { "DFP,EDID", "LCD,EDID", "EDID", "EDID1", NULL };
        int i;  

        dp = pci_device_to_OF_node(rinfo->pdev);
        while (dp != NULL) {
                for (i = 0; propnames[i] != NULL; ++i) {
                        pedid = (unsigned char *)
                                get_property(dp, propnames[i], NULL);
                        if (pedid != NULL) {
                                rinfo->EDID = pedid;
                                return 1;
                        }
                }
                dp = dp->child;
        }
        return 0;
}
#endif /* CONFIG_PPC_OF */


static int radeon_dfp_parse_EDID(struct radeonfb_info *rinfo)
{
	unsigned char *block = rinfo->EDID;

	if (!block)
		return 0;

	/* jump to the detailed timing block section */
	block += 54;

	rinfo->clock = (block[0] + (block[1] << 8));
	rinfo->panel_xres = (block[2] + ((block[4] & 0xf0) << 4));
	rinfo->hblank = (block[3] + ((block[4] & 0x0f) << 8));
	rinfo->panel_yres = (block[5] + ((block[7] & 0xf0) << 4));
	rinfo->vblank = (block[6] + ((block[7] & 0x0f) << 8));
	rinfo->hOver_plus = (block[8] + ((block[11] & 0xc0) << 2));
	rinfo->hSync_width = (block[9] + ((block[11] & 0x30) << 4));
	rinfo->vOver_plus = ((block[10] >> 4) + ((block[11] & 0x0c) << 2));
	rinfo->vSync_width = ((block[10] & 0x0f) + ((block[11] & 0x03) << 4));
	rinfo->interlaced = ((block[17] & 0x80) >> 7);
	rinfo->synct = ((block[17] & 0x18) >> 3);
	rinfo->misc = ((block[17] & 0x06) >> 1);
	rinfo->hAct_high = rinfo->vAct_high = 0;
	if (rinfo->synct == 3) {
		if (rinfo->misc & 2)
			rinfo->hAct_high = 1;
		if (rinfo->misc & 1)
			rinfo->vAct_high = 1;
	}

	printk("radeonfb: detected DFP panel size from EDID: %dx%d\n",
		rinfo->panel_xres, rinfo->panel_yres);

	rinfo->got_dfpinfo = 1;

	return 1;
}


static void radeon_update_default_var(struct radeonfb_info *rinfo)
{
	struct fb_var_screeninfo *var = &radeonfb_default_var;

	var->xres = rinfo->panel_xres;
	var->yres = rinfo->panel_yres;
	var->xres_virtual = rinfo->panel_xres;
	var->yres_virtual = rinfo->panel_yres;
	var->xoffset = var->yoffset = 0;
	var->bits_per_pixel = 8;
	var->pixclock = 100000000 / rinfo->clock;
	var->left_margin = (rinfo->hblank - rinfo->hOver_plus - rinfo->hSync_width);
	var->right_margin = rinfo->hOver_plus;
	var->upper_margin = (rinfo->vblank - rinfo->vOver_plus - rinfo->vSync_width);
	var->lower_margin = rinfo->vOver_plus;
	var->hsync_len = rinfo->hSync_width;
	var->vsync_len = rinfo->vSync_width;
	var->sync = 0;
	if (rinfo->synct == 3) {
		if (rinfo->hAct_high)
			var->sync |= FB_SYNC_HOR_HIGH_ACT;
		if (rinfo->vAct_high)
			var->sync |= FB_SYNC_VERT_HIGH_ACT;
	}

	var->vmode = 0;
	if (rinfo->interlaced)
		var->vmode |= FB_VMODE_INTERLACED;

	rinfo->use_default_var = 1;
}


static int radeon_get_dfpinfo_BIOS(struct radeonfb_info *rinfo)
{
	char __iomem *fpbiosstart, *tmp, *tmp0;
	char stmp[30];
	int i;

	if (!rinfo->bios_seg)
		return 0;

	if (!(fpbiosstart = rinfo->bios_seg + readw(rinfo->bios_seg + 0x48))) {
		printk("radeonfb: Failed to detect DFP panel info using BIOS\n");
		return 0;
	}

	if (!(tmp = rinfo->bios_seg + readw(fpbiosstart + 0x40))) {
		printk("radeonfb: Failed to detect DFP panel info using BIOS\n");
		return 0;
	}

	for(i=0; i<24; i++)
		stmp[i] = readb(tmp+i+1);
	stmp[24] = 0;
	printk("radeonfb: panel ID string: %s\n", stmp);
	rinfo->panel_xres = readw(tmp + 25);
	rinfo->panel_yres = readw(tmp + 27);
	printk("radeonfb: detected DFP panel size from BIOS: %dx%d\n",
		rinfo->panel_xres, rinfo->panel_yres);

	for(i=0; i<32; i++) {
		tmp0 = rinfo->bios_seg + readw(tmp+64+i*2);
		if (tmp0 == 0)
			break;
		if ((readw(tmp0) == rinfo->panel_xres) &&
		    (readw(tmp0+2) == rinfo->panel_yres)) {
			rinfo->hblank = (readw(tmp0+17) - readw(tmp0+19)) * 8;
			rinfo->hOver_plus = ((readw(tmp0+21) - readw(tmp0+19) -1) * 8) & 0x7fff;
			rinfo->hSync_width = readb(tmp0+23) * 8;
			rinfo->vblank = readw(tmp0+24) - readw(tmp0+26);
			rinfo->vOver_plus = (readw(tmp0+28) & 0x7ff) - readw(tmp0+26);
			rinfo->vSync_width = (readw(tmp0+28) & 0xf800) >> 11;
			rinfo->clock = readw(tmp0+9);

			rinfo->got_dfpinfo = 1;
			return 1;
		}
	}

	return 0;
}



static int radeon_get_dfpinfo (struct radeonfb_info *rinfo)
{
	unsigned int tmp;
	unsigned short a, b;

	if (radeon_get_dfpinfo_BIOS(rinfo))
		radeon_update_default_var(rinfo);

	if (radeon_dfp_parse_EDID(rinfo))
		radeon_update_default_var(rinfo);

	if (!rinfo->got_dfpinfo) {
		/*
		 * it seems all else has failed now and we
		 * resort to probing registers for our DFP info
	         */
		if (panel_yres) {
			rinfo->panel_yres = panel_yres;
		} else {
			tmp = INREG(FP_VERT_STRETCH);
			tmp &= 0x00fff000;
			rinfo->panel_yres = (unsigned short)(tmp >> 0x0c) + 1;
		}

		switch (rinfo->panel_yres) {
			case 480:
				rinfo->panel_xres = 640;
				break;
			case 600:
				rinfo->panel_xres = 800;
				break;
			case 768:
#if defined(__powerpc__)
				if (rinfo->dviDisp_type == MT_LCD)
					rinfo->panel_xres = 1152;
				else
#endif
				rinfo->panel_xres = 1024;
				break;
			case 1024:
				rinfo->panel_xres = 1280;
				break;
			case 1050:
				rinfo->panel_xres = 1400;
				break;
			case 1200:
				rinfo->panel_xres = 1600;
				break;
			default:
				printk("radeonfb: Failed to detect DFP panel size\n");
				return 0;
		}

		printk("radeonfb: detected DFP panel size from registers: %dx%d\n",
			rinfo->panel_xres, rinfo->panel_yres);

		tmp = INREG(FP_CRTC_H_TOTAL_DISP);
		a = (tmp & FP_CRTC_H_TOTAL_MASK) + 4;
		b = (tmp & 0x01ff0000) >> FP_CRTC_H_DISP_SHIFT;
		rinfo->hblank = (a - b + 1) * 8;

		tmp = INREG(FP_H_SYNC_STRT_WID);
		rinfo->hOver_plus = (unsigned short) ((tmp & FP_H_SYNC_STRT_CHAR_MASK) >>
					FP_H_SYNC_STRT_CHAR_SHIFT) - b - 1;
		rinfo->hOver_plus *= 8;
		rinfo->hSync_width = (unsigned short) ((tmp & FP_H_SYNC_WID_MASK) >>
					FP_H_SYNC_WID_SHIFT);
		rinfo->hSync_width *= 8;
		tmp = INREG(FP_CRTC_V_TOTAL_DISP);
		a = (tmp & FP_CRTC_V_TOTAL_MASK) + 1;
		b = (tmp & FP_CRTC_V_DISP_MASK) >> FP_CRTC_V_DISP_SHIFT;
		rinfo->vblank = a - b /* + 24 */ ;

		tmp = INREG(FP_V_SYNC_STRT_WID);
		rinfo->vOver_plus = (unsigned short) (tmp & FP_V_SYNC_STRT_MASK)
					- b + 1;
		rinfo->vSync_width = (unsigned short) ((tmp & FP_V_SYNC_WID_MASK) >>
					FP_V_SYNC_WID_SHIFT);

		return 1;
	}

	return 1;
}


#ifdef CONFIG_PPC_OF
static int radeon_read_OF (struct radeonfb_info *rinfo)
{
	struct device_node *dp;
	unsigned int *xtal;

	dp = pci_device_to_OF_node(rinfo->pdev);

	xtal = (unsigned int *) get_property(dp, "ATY,RefCLK", NULL);

	rinfo->pll.ref_clk = *xtal / 10;

	if (*xtal)
		return 1;
	else
		return 0;
}
#endif	


static void radeon_engine_init (struct radeonfb_info *rinfo)
{
	u32 temp;

	/* disable 3D engine */
	OUTREG(RB3D_CNTL, 0);

	radeon_engine_reset ();

	radeon_fifo_wait (1);
	OUTREG(RB2D_DSTCACHE_MODE, 0);

	radeon_fifo_wait (1);
	temp = INREG(DEFAULT_PITCH_OFFSET);
	OUTREG(DEFAULT_PITCH_OFFSET, ((temp & 0xc0000000) | 
				      (rinfo->pitch << 0x16)));

	radeon_fifo_wait (1);
	OUTREGP(DP_DATATYPE, 0, ~HOST_BIG_ENDIAN_EN);

	radeon_fifo_wait (1);
	OUTREG(DEFAULT_SC_BOTTOM_RIGHT, (DEFAULT_SC_RIGHT_MAX |
					 DEFAULT_SC_BOTTOM_MAX));

	temp = radeon_get_dstbpp(rinfo->depth);
	rinfo->dp_gui_master_cntl = ((temp << 8) | GMC_CLR_CMP_CNTL_DIS);
	radeon_fifo_wait (1);
	OUTREG(DP_GUI_MASTER_CNTL, (rinfo->dp_gui_master_cntl |
				    GMC_BRUSH_SOLID_COLOR |
				    GMC_SRC_DATATYPE_COLOR));

	radeon_fifo_wait (7);

	/* clear line drawing regs */
	OUTREG(DST_LINE_START, 0);
	OUTREG(DST_LINE_END, 0);

	/* set brush color regs */
	OUTREG(DP_BRUSH_FRGD_CLR, 0xffffffff);
	OUTREG(DP_BRUSH_BKGD_CLR, 0x00000000);

	/* set source color regs */
	OUTREG(DP_SRC_FRGD_CLR, 0xffffffff);
	OUTREG(DP_SRC_BKGD_CLR, 0x00000000);

	/* default write mask */
	OUTREG(DP_WRITE_MSK, 0xffffffff);

	radeon_engine_idle ();
}


static int __devinit radeon_init_disp (struct radeonfb_info *rinfo)
{
        struct fb_info *info = &rinfo->info;
	struct fb_var_screeninfo var;

        var = radeonfb_default_var;
        if ((radeon_init_disp_var(rinfo, &var)) < 0)
                return -1;

	rinfo->depth = var_to_depth(&var);
	rinfo->bpp = var.bits_per_pixel;
        
	info->var = var;
	fb_alloc_cmap(&info->cmap, 256, 0);

	var.activate = FB_ACTIVATE_NOW;
        return 0;
}


static int radeon_init_disp_var (struct radeonfb_info *rinfo,
				 struct fb_var_screeninfo *var)
{
#ifndef MODULE
        if (mode_option)
                fb_find_mode (var, &rinfo->info, mode_option,
                              NULL, 0, NULL, 8);
        else
#endif
	if (rinfo->use_default_var)
		/* We will use the modified default far */
		*var = radeonfb_default_var;
	else

                fb_find_mode (var, &rinfo->info, "640x480-8@60",
                              NULL, 0, NULL, 0);

	if (noaccel)
		var->accel_flags &= ~FB_ACCELF_TEXT;
	else
		var->accel_flags |= FB_ACCELF_TEXT;
 
        return 0;
}


static int radeon_do_maximize(struct radeonfb_info *rinfo,
                                struct fb_var_screeninfo *var,
                                struct fb_var_screeninfo *v,
                                int nom, int den)
{
        static struct {
                int xres, yres;
        } modes[] = {
                {1600, 1280},
                {1280, 1024},
                {1024, 768},
                {800, 600},
                {640, 480},
                {-1, -1}
        };
        int i;
  
        /* use highest possible virtual resolution */
        if (v->xres_virtual == -1 && v->yres_virtual == -1) {
                printk("radeonfb: using max available virtual resolution\n");
                for (i=0; modes[i].xres != -1; i++) {
                        if (modes[i].xres * nom / den * modes[i].yres <
                            rinfo->video_ram / 2)
                                break;
                }
                if (modes[i].xres == -1) {
                        printk("radeonfb: could not find virtual resolution that fits into video memory!\n");
                        return -EINVAL;
                }
                v->xres_virtual = modes[i].xres;  
                v->yres_virtual = modes[i].yres;
                
                printk("radeonfb: virtual resolution set to max of %dx%d\n",
                        v->xres_virtual, v->yres_virtual);
        } else if (v->xres_virtual == -1) {
                v->xres_virtual = (rinfo->video_ram * den /   
                                (nom * v->yres_virtual * 2)) & ~15;
        } else if (v->yres_virtual == -1) {
                v->xres_virtual = (v->xres_virtual + 15) & ~15;
                v->yres_virtual = rinfo->video_ram * den /
                        (nom * v->xres_virtual *2);
        } else {
                if (v->xres_virtual * nom / den * v->yres_virtual >
                        rinfo->video_ram) {
                        return -EINVAL;
                }
        }
                
        if (v->xres_virtual * nom / den >= 8192) {
                v->xres_virtual = 8192 * den / nom - 16;
        }       
        
        if (v->xres_virtual < v->xres)
                return -EINVAL;
                
        if (v->yres_virtual < v->yres)
                return -EINVAL;
                                
        return 0;
}


static int radeonfb_check_var (struct fb_var_screeninfo *var, struct fb_info *info)
{
        struct radeonfb_info *rinfo = (struct radeonfb_info *) info->par;
        struct fb_var_screeninfo v;
        int nom, den;

        memcpy (&v, var, sizeof (v));

        switch (v.bits_per_pixel) {
		case 0 ... 8:
			v.bits_per_pixel = 8;
			break;
		case 9 ... 16:
			v.bits_per_pixel = 16;
			break;
		case 17 ... 24:
#if 0 /* Doesn't seem to work */
			v.bits_per_pixel = 24;
			break;
#endif			
			return -EINVAL;
		case 25 ... 32:
			v.bits_per_pixel = 32;
			break;
		default:
			return -EINVAL;
	}

	switch (var_to_depth(&v)) {
                case 8:
                        nom = den = 1;
                        v.red.offset = v.green.offset = v.blue.offset = 0;
                        v.red.length = v.green.length = v.blue.length = 8;
                        v.transp.offset = v.transp.length = 0;
                        break;
		case 15:
			nom = 2;
			den = 1;
			v.red.offset = 10;
			v.green.offset = 5;
			v.blue.offset = 0;
			v.red.length = v.green.length = v.blue.length = 5;
			v.transp.offset = v.transp.length = 0;
			break;
                case 16:
                        nom = 2;
                        den = 1;
                        v.red.offset = 11;
                        v.green.offset = 5;
                        v.blue.offset = 0;
                        v.red.length = 5;
                        v.green.length = 6;
                        v.blue.length = 5;
                        v.transp.offset = v.transp.length = 0;
                        break;                          
                case 24:
                        nom = 4;
                        den = 1;
                        v.red.offset = 16;
                        v.green.offset = 8;
                        v.blue.offset = 0;
                        v.red.length = v.blue.length = v.green.length = 8;
                        v.transp.offset = v.transp.length = 0;
                        break;
                case 32:
                        nom = 4;
                        den = 1;
                        v.red.offset = 16;
                        v.green.offset = 8;
                        v.blue.offset = 0;
                        v.red.length = v.blue.length = v.green.length = 8;
                        v.transp.offset = 24;
                        v.transp.length = 8;
                        break;
                default:
                        printk ("radeonfb: mode %dx%dx%d rejected, color depth invalid\n",
                                var->xres, var->yres, var->bits_per_pixel);
                        return -EINVAL;
        }

        if (radeon_do_maximize(rinfo, var, &v, nom, den) < 0)
                return -EINVAL;  
                
        if (v.xoffset < 0)
                v.xoffset = 0;
        if (v.yoffset < 0)
                v.yoffset = 0;
         
        if (v.xoffset > v.xres_virtual - v.xres)
                v.xoffset = v.xres_virtual - v.xres - 1;
                        
        if (v.yoffset > v.yres_virtual - v.yres)
                v.yoffset = v.yres_virtual - v.yres - 1;
         
        v.red.msb_right = v.green.msb_right = v.blue.msb_right =
                          v.transp.offset = v.transp.length =
                          v.transp.msb_right = 0;

	if (noaccel)
		v.accel_flags = 0;
			
        memcpy(var, &v, sizeof(v));
        
        return 0;
}


static int radeonfb_pan_display (struct fb_var_screeninfo *var,
                                 struct fb_info *info)
{
        struct radeonfb_info *rinfo = (struct radeonfb_info *) info;

        if ((var->xoffset + var->xres > var->xres_virtual)
	    || (var->yoffset + var->yres > var->yres_virtual))
               return -EINVAL;
                
        if (rinfo->asleep)
        	return 0;

        OUTREG(CRTC_OFFSET, ((var->yoffset * var->xres_virtual + var->xoffset)
			     * var->bits_per_pixel / 8) & ~7);
        return 0;
}


static int radeonfb_ioctl (struct inode *inode, struct file *file, unsigned int cmd,
                           unsigned long arg, struct fb_info *info)
{
        struct radeonfb_info *rinfo = (struct radeonfb_info *) info;
	unsigned int tmp;
	u32 value = 0;
	int rc;

	switch (cmd) {
		/*
		 * TODO:  set mirror accordingly for non-Mobility chipsets with 2 CRTC's
		 */
		case FBIO_RADEON_SET_MIRROR:
			switch (rinfo->arch) {
				case RADEON_R100:
				case RADEON_RV100:
				case RADEON_R200:
				case RADEON_RV200:
				case RADEON_RV250:
				case RADEON_R300:
					return -EINVAL;
				default:
					/* RADEON M6, RADEON_M7, RADEON_M9 */
					break;
			}

			rc = get_user(value, (__u32 __user *)arg);

			if (rc)
				return rc;

			if (value & 0x01) {
				tmp = INREG(LVDS_GEN_CNTL);

				tmp |= (LVDS_ON | LVDS_BLON);
			} else {
				tmp = INREG(LVDS_GEN_CNTL);

				tmp &= ~(LVDS_ON | LVDS_BLON);
			}

			OUTREG(LVDS_GEN_CNTL, tmp);

			if (value & 0x02) {
				tmp = INREG(CRTC_EXT_CNTL);
				tmp |= CRTC_CRT_ON;

				mirror = 1;
			} else {
				tmp = INREG(CRTC_EXT_CNTL);
				tmp &= ~CRTC_CRT_ON;

				mirror = 0;
			}

			OUTREG(CRTC_EXT_CNTL, tmp);

			break;
		case FBIO_RADEON_GET_MIRROR:
			switch (rinfo->arch) {
				case RADEON_R100:
				case RADEON_RV100:
				case RADEON_R200:
				case RADEON_RV200:
				case RADEON_RV250:
				case RADEON_R300:
					return -EINVAL;
				default:
					/* RADEON M6, RADEON_M7, RADEON_M9 */
					break;
			}

			tmp = INREG(LVDS_GEN_CNTL);
			if ((LVDS_ON | LVDS_BLON) & tmp)
				value |= 0x01;

			tmp = INREG(CRTC_EXT_CNTL);
			if (CRTC_CRT_ON & tmp)
				value |= 0x02;

			return put_user(value, (__u32 __user *)arg);
		default:
			return -EINVAL;
	}

	return -EINVAL;
}


static int radeonfb_blank (int blank, struct fb_info *info)
{
        struct radeonfb_info *rinfo = (struct radeonfb_info *) info;
        u32 val = INREG(CRTC_EXT_CNTL);
	u32 val2 = INREG(LVDS_GEN_CNTL);

	if (rinfo->asleep)
		return 0;
		
#ifdef CONFIG_PMAC_BACKLIGHT
	if (rinfo->dviDisp_type == MT_LCD && _machine == _MACH_Pmac) {
		set_backlight_enable(!blank);
		return 0;
	}
#endif
                        
        /* reset it */
        val &= ~(CRTC_DISPLAY_DIS | CRTC_HSYNC_DIS |
                 CRTC_VSYNC_DIS);
	val2 &= ~(LVDS_DISPLAY_DIS);

        switch (blank) {
	        case FB_BLANK_UNBLANK:
	        case FB_BLANK_NORMAL:
                        break;
                case FB_BLANK_VSYNC_SUSPEND:
                        val |= (CRTC_DISPLAY_DIS | CRTC_VSYNC_DIS);
                        break;
                case FB_BLANK_HSYNC_SUSPEND:
                        val |= (CRTC_DISPLAY_DIS | CRTC_HSYNC_DIS);
                        break;
                case FB_BLANK_POWERDOWN:
                        val |= (CRTC_DISPLAY_DIS | CRTC_VSYNC_DIS | 
                                CRTC_HSYNC_DIS);
			val2 |= (LVDS_DISPLAY_DIS);
                        break;
        }

	switch (rinfo->dviDisp_type) {
		case MT_LCD:
			OUTREG(LVDS_GEN_CNTL, val2);
			break;
		case MT_CRT:
		default:
		        OUTREG(CRTC_EXT_CNTL, val);
			break;
	}

	/* let fbcon do a soft blank for us */
	return (blank == FB_BLANK_NORMAL) ? 1 : 0;
}


static int radeonfb_setcolreg (unsigned regno, unsigned red, unsigned green,
                             unsigned blue, unsigned transp, struct fb_info *info)
{
        struct radeonfb_info *rinfo = (struct radeonfb_info *) info;
	u32 pindex, vclk_cntl;
	unsigned int i;
	
	if (regno > 255)
		return 1;

	red >>= 8;
	green >>= 8;
	blue >>= 8;
	rinfo->palette[regno].red = red;
	rinfo->palette[regno].green = green;
	rinfo->palette[regno].blue = blue;

        /* default */
        pindex = regno;

        if (!rinfo->asleep) {
		vclk_cntl = INPLL(VCLK_ECP_CNTL);
		OUTPLL(VCLK_ECP_CNTL, vclk_cntl & ~PIXCLK_DAC_ALWAYS_ONb);

		if (rinfo->bpp == 16) {
			pindex = regno * 8;

			if (rinfo->depth == 16 && regno > 63)
				return 1;
			if (rinfo->depth == 15 && regno > 31)
				return 1;

			/* For 565, the green component is mixed one order below */
			if (rinfo->depth == 16) {
		                OUTREG(PALETTE_INDEX, pindex>>1);
	       	         	OUTREG(PALETTE_DATA, (rinfo->palette[regno>>1].red << 16) |
	                        	(green << 8) | (rinfo->palette[regno>>1].blue));
	                	green = rinfo->palette[regno<<1].green;
	        	}
		}

		if (rinfo->depth != 16 || regno < 32) {
			OUTREG(PALETTE_INDEX, pindex);
			OUTREG(PALETTE_DATA, (red << 16) | (green << 8) | blue);
		}

		OUTPLL(VCLK_ECP_CNTL, vclk_cntl);
	}
 	if (regno < 16) {
        	switch (rinfo->depth) {
		case 15:
			((u16 *) (info->pseudo_palette))[regno] =
			    (regno << 10) | (regno << 5) | regno;
			break;
		case 16:
			((u16 *) (info->pseudo_palette))[regno] =
			    (regno << 11) | (regno << 6) | regno;
			break;
		case 24:
			((u32 *) (info->pseudo_palette))[regno] =
			    (regno << 16) | (regno << 8) | regno;
			break;
		case 32:
			i = (regno << 8) | regno;
			((u32 *) (info->pseudo_palette))[regno] =
			    (i << 16) | i;
			break;
		}
        }
	return 0;
}



static void radeon_save_state (struct radeonfb_info *rinfo,
                               struct radeon_regs *save)
{
	/* CRTC regs */
	save->crtc_gen_cntl = INREG(CRTC_GEN_CNTL);
	save->crtc_ext_cntl = INREG(CRTC_EXT_CNTL);
	save->dac_cntl = INREG(DAC_CNTL);
        save->crtc_h_total_disp = INREG(CRTC_H_TOTAL_DISP);
        save->crtc_h_sync_strt_wid = INREG(CRTC_H_SYNC_STRT_WID);
        save->crtc_v_total_disp = INREG(CRTC_V_TOTAL_DISP);
        save->crtc_v_sync_strt_wid = INREG(CRTC_V_SYNC_STRT_WID);
	save->crtc_pitch = INREG(CRTC_PITCH);
#if defined(__BIG_ENDIAN)
	save->surface_cntl = INREG(SURFACE_CNTL);
#endif

	/* FP regs */
	save->fp_crtc_h_total_disp = INREG(FP_CRTC_H_TOTAL_DISP);
	save->fp_crtc_v_total_disp = INREG(FP_CRTC_V_TOTAL_DISP);
	save->fp_gen_cntl = INREG(FP_GEN_CNTL);
	save->fp_h_sync_strt_wid = INREG(FP_H_SYNC_STRT_WID);
	save->fp_horz_stretch = INREG(FP_HORZ_STRETCH);
	save->fp_v_sync_strt_wid = INREG(FP_V_SYNC_STRT_WID);
	save->fp_vert_stretch = INREG(FP_VERT_STRETCH);
	save->lvds_gen_cntl = INREG(LVDS_GEN_CNTL);
	save->lvds_pll_cntl = INREG(LVDS_PLL_CNTL);
	save->tmds_crc = INREG(TMDS_CRC);
	save->tmds_transmitter_cntl = INREG(TMDS_TRANSMITTER_CNTL);
	save->vclk_ecp_cntl = INPLL(VCLK_ECP_CNTL);
}



static int radeonfb_set_par (struct fb_info *info)
{
	struct radeonfb_info *rinfo = (struct radeonfb_info *)info->par;
	struct fb_var_screeninfo *mode = &info->var;
	struct radeon_regs newmode;
	int hTotal, vTotal, hSyncStart, hSyncEnd,
	    hSyncPol, vSyncStart, vSyncEnd, vSyncPol, cSync;
	u8 hsync_adj_tab[] = {0, 0x12, 9, 9, 6, 5};
	u8 hsync_fudge_fp[] = {2, 2, 0, 0, 5, 5};
	u32 dotClock = 1000000000 / mode->pixclock,
	    sync, h_sync_pol, v_sync_pol;
	int freq = dotClock / 10;  /* x 100 */
        int xclk_freq, vclk_freq, xclk_per_trans, xclk_per_trans_precise;
        int useable_precision, roff, ron;
        int min_bits, format = 0;
	int hsync_start, hsync_fudge, bytpp, hsync_wid, vsync_wid;
	int primary_mon = PRIMARY_MONITOR(rinfo);
	int depth = var_to_depth(mode);
        int accel = (mode->accel_flags & FB_ACCELF_TEXT) != 0;

	rinfo->xres = mode->xres;
	rinfo->yres = mode->yres;
	rinfo->xres_virtual = mode->xres_virtual;
	rinfo->yres_virtual = mode->yres_virtual;
	rinfo->pixclock = mode->pixclock;

	hSyncStart = mode->xres + mode->right_margin;
	hSyncEnd = hSyncStart + mode->hsync_len;
	hTotal = hSyncEnd + mode->left_margin;

	vSyncStart = mode->yres + mode->lower_margin;
	vSyncEnd = vSyncStart + mode->vsync_len;
	vTotal = vSyncEnd + mode->upper_margin;

	if ((primary_mon == MT_DFP) || (primary_mon == MT_LCD)) {
		if (rinfo->panel_xres < mode->xres)
			rinfo->xres = mode->xres = rinfo->panel_xres;
		if (rinfo->panel_yres < mode->yres)
			rinfo->yres = mode->yres = rinfo->panel_yres;

		hTotal = mode->xres + rinfo->hblank;
		hSyncStart = mode->xres + rinfo->hOver_plus;
		hSyncEnd = hSyncStart + rinfo->hSync_width;

		vTotal = mode->yres + rinfo->vblank;
		vSyncStart = mode->yres + rinfo->vOver_plus;
		vSyncEnd = vSyncStart + rinfo->vSync_width;
	}

	sync = mode->sync;
	h_sync_pol = sync & FB_SYNC_HOR_HIGH_ACT ? 0 : 1;
	v_sync_pol = sync & FB_SYNC_VERT_HIGH_ACT ? 0 : 1;

	RTRACE("hStart = %d, hEnd = %d, hTotal = %d\n",
		hSyncStart, hSyncEnd, hTotal);
	RTRACE("vStart = %d, vEnd = %d, vTotal = %d\n",
		vSyncStart, vSyncEnd, vTotal);

	hsync_wid = (hSyncEnd - hSyncStart) / 8;
	vsync_wid = vSyncEnd - vSyncStart;
	if (hsync_wid == 0)
		hsync_wid = 1;
	else if (hsync_wid > 0x3f)	/* max */
		hsync_wid = 0x3f;

	if (vsync_wid == 0)
		vsync_wid = 1;
	else if (vsync_wid > 0x1f)	/* max */
		vsync_wid = 0x1f;

	hSyncPol = mode->sync & FB_SYNC_HOR_HIGH_ACT ? 0 : 1;
	vSyncPol = mode->sync & FB_SYNC_VERT_HIGH_ACT ? 0 : 1;

	cSync = mode->sync & FB_SYNC_COMP_HIGH_ACT ? (1 << 4) : 0;

	format = radeon_get_dstbpp(depth);
	bytpp = mode->bits_per_pixel >> 3;

	if ((primary_mon == MT_DFP) || (primary_mon == MT_LCD))
		hsync_fudge = hsync_fudge_fp[format-1];
	else
		hsync_fudge = hsync_adj_tab[format-1];

	hsync_start = hSyncStart - 8 + hsync_fudge;

	newmode.crtc_gen_cntl = CRTC_EXT_DISP_EN | CRTC_EN |
				(format << 8);

	if ((primary_mon == MT_DFP) || (primary_mon == MT_LCD)) {
		newmode.crtc_ext_cntl = VGA_ATI_LINEAR | XCRT_CNT_EN;
		if (mirror)
			newmode.crtc_ext_cntl |= CRTC_CRT_ON;

		newmode.crtc_gen_cntl &= ~(CRTC_DBL_SCAN_EN |
					   CRTC_INTERLACE_EN);
	} else {
		newmode.crtc_ext_cntl = VGA_ATI_LINEAR | XCRT_CNT_EN |
					CRTC_CRT_ON;
	}

	newmode.dac_cntl = /* INREG(DAC_CNTL) | */ DAC_MASK_ALL | DAC_VGA_ADR_EN |
			   DAC_8BIT_EN;

	newmode.crtc_h_total_disp = ((((hTotal / 8) - 1) & 0x3ff) |
				     (((mode->xres / 8) - 1) << 16));

	newmode.crtc_h_sync_strt_wid = ((hsync_start & 0x1fff) |
					(hsync_wid << 16) | (h_sync_pol << 23));

	newmode.crtc_v_total_disp = ((vTotal - 1) & 0xffff) |
				    ((mode->yres - 1) << 16);

	newmode.crtc_v_sync_strt_wid = (((vSyncStart - 1) & 0xfff) |
					 (vsync_wid << 16) | (v_sync_pol  << 23));

	if (accel) {
		/* We first calculate the engine pitch */
		rinfo->pitch = ((mode->xres_virtual * ((mode->bits_per_pixel + 1) / 8) + 0x3f)
 				& ~(0x3f)) >> 6;

		/* Then, re-multiply it to get the CRTC pitch */
		newmode.crtc_pitch = (rinfo->pitch << 3) / ((mode->bits_per_pixel + 1) / 8);
	} else
		newmode.crtc_pitch = (mode->xres_virtual >> 3);
	newmode.crtc_pitch |= (newmode.crtc_pitch << 16);

#if defined(__BIG_ENDIAN)
	/*
	 * It looks like recent chips have a problem with SURFACE_CNTL,
	 * setting SURF_TRANSLATION_DIS completely disables the
	 * swapper as well, so we leave it unset now.
	 */
	newmode.surface_cntl = 0;

	/* Setup swapping on both apertures, though we currently
	 * only use aperture 0, enabling swapper on aperture 1
	 * won't harm
	 */
	switch (mode->bits_per_pixel) {
		case 16:
			newmode.surface_cntl |= NONSURF_AP0_SWP_16BPP;
			newmode.surface_cntl |= NONSURF_AP1_SWP_16BPP;
			break;
		case 24:	
		case 32:
			newmode.surface_cntl |= NONSURF_AP0_SWP_32BPP;
			newmode.surface_cntl |= NONSURF_AP1_SWP_32BPP;
			break;
	}
#endif

	rinfo->pitch = ((mode->xres_virtual * ((mode->bits_per_pixel + 1) / 8) + 0x3f)
 			& ~(0x3f)) / 64;

	RTRACE("h_total_disp = 0x%x\t   hsync_strt_wid = 0x%x\n",
		newmode.crtc_h_total_disp, newmode.crtc_h_sync_strt_wid);
	RTRACE("v_total_disp = 0x%x\t   vsync_strt_wid = 0x%x\n",
		newmode.crtc_v_total_disp, newmode.crtc_v_sync_strt_wid);

	newmode.xres = mode->xres;
	newmode.yres = mode->yres;

	rinfo->bpp = mode->bits_per_pixel;
	rinfo->depth = depth;

	if (freq > rinfo->pll.ppll_max)
		freq = rinfo->pll.ppll_max;
	if (freq*12 < rinfo->pll.ppll_min)
		freq = rinfo->pll.ppll_min / 12;

	{
		struct {
			int divider;
			int bitvalue;
		} *post_div,
		  post_divs[] = {
			{ 1,  0 },
			{ 2,  1 },
			{ 4,  2 },
			{ 8,  3 },
			{ 3,  4 },
			{ 16, 5 },
			{ 6,  6 },
			{ 12, 7 },
			{ 0,  0 },
		};

		for (post_div = &post_divs[0]; post_div->divider; ++post_div) {
			rinfo->pll_output_freq = post_div->divider * freq;
			if (rinfo->pll_output_freq >= rinfo->pll.ppll_min  &&
			    rinfo->pll_output_freq <= rinfo->pll.ppll_max)
				break;
		}

		rinfo->post_div = post_div->divider;
		rinfo->fb_div = round_div(rinfo->pll.ref_div*rinfo->pll_output_freq,
					  rinfo->pll.ref_clk);
		newmode.ppll_ref_div = rinfo->pll.ref_div;
		newmode.ppll_div_3 = rinfo->fb_div | (post_div->bitvalue << 16);
	}
	newmode.vclk_ecp_cntl = rinfo->init_state.vclk_ecp_cntl;

#ifdef CONFIG_PPC_OF
	/* Gross hack for iBook with M7 until I find out a proper fix */
	if (machine_is_compatible("PowerBook4,3") && rinfo->arch == RADEON_M7)
		newmode.ppll_div_3 = 0x000600ad;
#endif /* CONFIG_PPC_OF */	

	RTRACE("post div = 0x%x\n", rinfo->post_div);
	RTRACE("fb_div = 0x%x\n", rinfo->fb_div);
	RTRACE("ppll_div_3 = 0x%x\n", newmode.ppll_div_3);

	/* DDA */
	vclk_freq = round_div(rinfo->pll.ref_clk * rinfo->fb_div,
			      rinfo->pll.ref_div * rinfo->post_div);
	xclk_freq = rinfo->pll.xclk;

	xclk_per_trans = round_div(xclk_freq * 128, vclk_freq * mode->bits_per_pixel);

	min_bits = min_bits_req(xclk_per_trans);
	useable_precision = min_bits + 1;

	xclk_per_trans_precise = round_div((xclk_freq * 128) << (11 - useable_precision),
					   vclk_freq * mode->bits_per_pixel);

	ron = (4 * rinfo->ram.mb + 3 * _max(rinfo->ram.trcd - 2, 0) +
	       2 * rinfo->ram.trp + rinfo->ram.twr + rinfo->ram.cl + rinfo->ram.tr2w +
	       xclk_per_trans) << (11 - useable_precision);
	roff = xclk_per_trans_precise * (32 - 4);

	RTRACE("ron = %d, roff = %d\n", ron, roff);
	RTRACE("vclk_freq = %d, per = %d\n", vclk_freq, xclk_per_trans_precise);

	if ((ron + rinfo->ram.rloop) >= roff) {
		printk("radeonfb: error ron out of range\n");
		return -EINVAL;
	}

	newmode.dda_config = (xclk_per_trans_precise |
			      (useable_precision << 16) |
			      (rinfo->ram.rloop << 20));
	newmode.dda_on_off = (ron << 16) | roff;

	if ((primary_mon == MT_DFP) || (primary_mon == MT_LCD)) {
		unsigned int hRatio, vRatio;

		/* We force the pixel clock to be always enabled. Allowing it
		 * to be power managed during blanking would save power, but has
		 * nasty interactions with the 2D engine & sleep code that haven't
		 * been solved yet. --BenH
		 */
		newmode.vclk_ecp_cntl &= ~PIXCLK_DAC_ALWAYS_ONb;
		
		if (mode->xres > rinfo->panel_xres)
			mode->xres = rinfo->panel_xres;
		if (mode->yres > rinfo->panel_yres)
			mode->yres = rinfo->panel_yres;

		newmode.fp_horz_stretch = (((rinfo->panel_xres / 8) - 1)
					   << HORZ_PANEL_SHIFT);
		newmode.fp_vert_stretch = ((rinfo->panel_yres - 1)
					   << VERT_PANEL_SHIFT);

		if (mode->xres != rinfo->panel_xres) {
			hRatio = round_div(mode->xres * HORZ_STRETCH_RATIO_MAX,
					   rinfo->panel_xres);
			newmode.fp_horz_stretch = (((((unsigned long)hRatio) & HORZ_STRETCH_RATIO_MASK)) |
						   (newmode.fp_horz_stretch &
						    (HORZ_PANEL_SIZE | HORZ_FP_LOOP_STRETCH |
						     HORZ_AUTO_RATIO_INC)));
			newmode.fp_horz_stretch |= (HORZ_STRETCH_BLEND |
						    HORZ_STRETCH_ENABLE);
		}
		newmode.fp_horz_stretch &= ~HORZ_AUTO_RATIO;

		if (mode->yres != rinfo->panel_yres) {
			vRatio = round_div(mode->yres * VERT_STRETCH_RATIO_MAX,
					   rinfo->panel_yres);
			newmode.fp_vert_stretch = (((((unsigned long)vRatio) & VERT_STRETCH_RATIO_MASK)) |
						   (newmode.fp_vert_stretch &
						   (VERT_PANEL_SIZE | VERT_STRETCH_RESERVED)));
			newmode.fp_vert_stretch |= (VERT_STRETCH_BLEND |
						    VERT_STRETCH_ENABLE);
		}
		newmode.fp_vert_stretch &= ~VERT_AUTO_RATIO_EN;

		newmode.fp_gen_cntl = (rinfo->init_state.fp_gen_cntl & (u32)
				       ~(FP_SEL_CRTC2 |
					 FP_RMX_HVSYNC_CONTROL_EN |
					 FP_DFP_SYNC_SEL |
					 FP_CRT_SYNC_SEL |
					 FP_CRTC_LOCK_8DOT |
					 FP_USE_SHADOW_EN |
					 FP_CRTC_USE_SHADOW_VEND |
					 FP_CRT_SYNC_ALT));

		newmode.fp_gen_cntl |= (FP_CRTC_DONT_SHADOW_VPAR |
					FP_CRTC_DONT_SHADOW_HEND);

		newmode.lvds_gen_cntl = rinfo->init_state.lvds_gen_cntl;
		newmode.lvds_pll_cntl = rinfo->init_state.lvds_pll_cntl;
		newmode.tmds_crc = rinfo->init_state.tmds_crc;
		newmode.tmds_transmitter_cntl = rinfo->init_state.tmds_transmitter_cntl;

		if (primary_mon == MT_LCD) {
			newmode.lvds_gen_cntl |= (LVDS_ON | LVDS_BLON);
			newmode.fp_gen_cntl &= ~(FP_FPON | FP_TMDS_EN);
		} else {
			/* DFP */
			newmode.fp_gen_cntl |= (FP_FPON | FP_TMDS_EN);
			newmode.tmds_transmitter_cntl = (TMDS_RAN_PAT_RST |
							 TMDS_ICHCSEL | TMDS_PLL_EN) &
							 ~(TMDS_PLLRST);
			newmode.crtc_ext_cntl &= ~CRTC_CRT_ON;
		}

		newmode.fp_crtc_h_total_disp = (((rinfo->hblank / 8) & 0x3ff) |
				(((mode->xres / 8) - 1) << 16));
		newmode.fp_crtc_v_total_disp = (rinfo->vblank & 0xffff) |
				((mode->yres - 1) << 16);
		newmode.fp_h_sync_strt_wid = ((rinfo->hOver_plus & 0x1fff) |
				(hsync_wid << 16) | (h_sync_pol << 23));
		newmode.fp_v_sync_strt_wid = ((rinfo->vOver_plus & 0xfff) |
				(vsync_wid << 16) | (v_sync_pol  << 23));
	}

	/* do it! */
	if (!rinfo->asleep) {
		radeon_write_mode (rinfo, &newmode);
		/* (re)initialize the engine */
		if (noaccel)
			radeon_engine_init (rinfo);
	
	}
	/* Update fix */
	if (accel)
        	info->fix.line_length = rinfo->pitch*64;
        else
		info->fix.line_length = mode->xres_virtual * ((mode->bits_per_pixel + 1) / 8);
        info->fix.visual = rinfo->depth == 8 ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_DIRECTCOLOR;

#ifdef CONFIG_BOOTX_TEXT
	/* Update debug text engine */
	btext_update_display(rinfo->fb_base_phys, mode->xres, mode->yres,
			     rinfo->depth, info->fix.line_length);
#endif

	return 0;
}


static void radeon_write_mode (struct radeonfb_info *rinfo,
                               struct radeon_regs *mode)
{
	int i;
	int primary_mon = PRIMARY_MONITOR(rinfo);

	radeonfb_blank(VESA_POWERDOWN, (struct fb_info *)rinfo);


	if (rinfo->arch == RADEON_M6) {
		for (i=0; i<7; i++)
			OUTREG(common_regs_m6[i].reg, common_regs_m6[i].val);
	} else {
		for (i=0; i<9; i++)
			OUTREG(common_regs[i].reg, common_regs[i].val);
	}

	OUTREG(CRTC_GEN_CNTL, mode->crtc_gen_cntl);
	OUTREGP(CRTC_EXT_CNTL, mode->crtc_ext_cntl,
		CRTC_HSYNC_DIS | CRTC_VSYNC_DIS | CRTC_DISPLAY_DIS);
	OUTREGP(DAC_CNTL, mode->dac_cntl, DAC_RANGE_CNTL | DAC_BLANKING);
	OUTREG(CRTC_H_TOTAL_DISP, mode->crtc_h_total_disp);
	OUTREG(CRTC_H_SYNC_STRT_WID, mode->crtc_h_sync_strt_wid);
	OUTREG(CRTC_V_TOTAL_DISP, mode->crtc_v_total_disp);
	OUTREG(CRTC_V_SYNC_STRT_WID, mode->crtc_v_sync_strt_wid);
	OUTREG(CRTC_OFFSET, 0);
	OUTREG(CRTC_OFFSET_CNTL, 0);
	OUTREG(CRTC_PITCH, mode->crtc_pitch);

#if defined(__BIG_ENDIAN)
	OUTREG(SURFACE_CNTL, mode->surface_cntl);
#endif

	while ((INREG(CLOCK_CNTL_INDEX) & PPLL_DIV_SEL_MASK) !=
	       PPLL_DIV_SEL_MASK) {
		OUTREGP(CLOCK_CNTL_INDEX, PPLL_DIV_SEL_MASK, 0xffff);
	}

	OUTPLLP(PPLL_CNTL, PPLL_RESET, 0xffff);

	while ((INPLL(PPLL_REF_DIV) & PPLL_REF_DIV_MASK) !=
	       (mode->ppll_ref_div & PPLL_REF_DIV_MASK)) {
		OUTPLLP(PPLL_REF_DIV, mode->ppll_ref_div, ~PPLL_REF_DIV_MASK);
	}

	while ((INPLL(PPLL_DIV_3) & PPLL_FB3_DIV_MASK) !=
	       (mode->ppll_div_3 & PPLL_FB3_DIV_MASK)) {
		OUTPLLP(PPLL_DIV_3, mode->ppll_div_3, ~PPLL_FB3_DIV_MASK);
	}

	while ((INPLL(PPLL_DIV_3) & PPLL_POST3_DIV_MASK) !=
	       (mode->ppll_div_3 & PPLL_POST3_DIV_MASK)) {
		OUTPLLP(PPLL_DIV_3, mode->ppll_div_3, ~PPLL_POST3_DIV_MASK);
	}

	OUTPLL(HTOTAL_CNTL, 0);

	OUTPLLP(PPLL_CNTL, 0, ~PPLL_RESET);

//	OUTREG(DDA_CONFIG, mode->dda_config);
//	OUTREG(DDA_ON_OFF, mode->dda_on_off);

	if ((primary_mon == MT_DFP) || (primary_mon == MT_LCD)) {
		OUTREG(FP_CRTC_H_TOTAL_DISP, mode->fp_crtc_h_total_disp);
		OUTREG(FP_CRTC_V_TOTAL_DISP, mode->fp_crtc_v_total_disp);
		OUTREG(FP_H_SYNC_STRT_WID, mode->fp_h_sync_strt_wid);
		OUTREG(FP_V_SYNC_STRT_WID, mode->fp_v_sync_strt_wid);
		OUTREG(FP_HORZ_STRETCH, mode->fp_horz_stretch);
		OUTREG(FP_VERT_STRETCH, mode->fp_vert_stretch);
		OUTREG(FP_GEN_CNTL, mode->fp_gen_cntl);
		OUTREG(TMDS_CRC, mode->tmds_crc);
		OUTREG(TMDS_TRANSMITTER_CNTL, mode->tmds_transmitter_cntl);

		if (primary_mon == MT_LCD) {
			unsigned int tmp = INREG(LVDS_GEN_CNTL);

			mode->lvds_gen_cntl &= ~LVDS_STATE_MASK;
			mode->lvds_gen_cntl |= (rinfo->init_state.lvds_gen_cntl & LVDS_STATE_MASK);

			if ((tmp & (LVDS_ON | LVDS_BLON)) ==
			    (mode->lvds_gen_cntl & (LVDS_ON | LVDS_BLON))) {
				OUTREG(LVDS_GEN_CNTL, mode->lvds_gen_cntl);
			} else {
				if (mode->lvds_gen_cntl & (LVDS_ON | LVDS_BLON)) {
					udelay(1000);
					OUTREG(LVDS_GEN_CNTL, mode->lvds_gen_cntl);
				} else {
					OUTREG(LVDS_GEN_CNTL, mode->lvds_gen_cntl |
					       LVDS_BLON);
					udelay(1000);
					OUTREG(LVDS_GEN_CNTL, mode->lvds_gen_cntl);
				}
			}
		}
	}

	radeonfb_blank(VESA_NO_BLANKING, (struct fb_info *)rinfo);

	OUTPLL(VCLK_ECP_CNTL, mode->vclk_ecp_cntl);
	
	return;
}

static struct fb_ops radeonfb_ops = {
	.owner			= THIS_MODULE,
	.fb_check_var		= radeonfb_check_var,
	.fb_set_par		= radeonfb_set_par,
	.fb_setcolreg		= radeonfb_setcolreg,
	.fb_pan_display 	= radeonfb_pan_display,
	.fb_blank		= radeonfb_blank,
	.fb_ioctl		= radeonfb_ioctl,
#if 0
	.fb_fillrect	= radeonfb_fillrect,
	.fb_copyarea	= radeonfb_copyarea,
	.fb_imageblit	= radeonfb_imageblit,
	.fb_rasterimg	= radeonfb_rasterimg,
#else
	.fb_fillrect	= cfb_fillrect,
	.fb_copyarea	= cfb_copyarea,
	.fb_imageblit	= cfb_imageblit,
#endif
	.fb_cursor	= soft_cursor,
};


static int __devinit radeon_set_fbinfo (struct radeonfb_info *rinfo)
{
	struct fb_info *info;

	info = &rinfo->info;

	info->par = rinfo;
	info->pseudo_palette = rinfo->pseudo_palette;
        info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
        info->fbops = &radeonfb_ops;
        info->screen_base = rinfo->fb_base;

	/* Fill fix common fields */
	strlcpy(info->fix.id, rinfo->name, sizeof(info->fix.id));
        info->fix.smem_start = rinfo->fb_base_phys;
        info->fix.smem_len = rinfo->video_ram;
        info->fix.type = FB_TYPE_PACKED_PIXELS;
        info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
        info->fix.xpanstep = 8;
        info->fix.ypanstep = 1;
        info->fix.ywrapstep = 0;
        info->fix.type_aux = 0;
        info->fix.mmio_start = rinfo->mmio_base_phys;
        info->fix.mmio_len = RADEON_REGSIZE;
	if (noaccel)
	        info->fix.accel = FB_ACCEL_NONE;
	else
		info->fix.accel = FB_ACCEL_ATI_RADEON;

        if (radeon_init_disp (rinfo) < 0)
                return -1;   

        return 0;
}


#ifdef CONFIG_PMAC_BACKLIGHT

/* TODO: Dbl check these tables, we don't go up to full ON backlight
 * in these, possibly because we noticed MacOS doesn't, but I'd prefer
 * having some more official numbers from ATI
 */
static int backlight_conv_m6[] = {
	0xff, 0xc0, 0xb5, 0xaa, 0x9f, 0x94, 0x89, 0x7e,
	0x73, 0x68, 0x5d, 0x52, 0x47, 0x3c, 0x31, 0x24
};
static int backlight_conv_m7[] = {
	0x00, 0x3f, 0x4a, 0x55, 0x60, 0x6b, 0x76, 0x81,
	0x8c, 0x97, 0xa2, 0xad, 0xb8, 0xc3, 0xce, 0xd9
};

#define BACKLIGHT_LVDS_OFF
#undef BACKLIGHT_DAC_OFF

/* We turn off the LCD completely instead of just dimming the backlight.
 * This provides some greater power saving and the display is useless
 * without backlight anyway.
 */

static int radeon_set_backlight_enable(int on, int level, void *data)
{
	struct radeonfb_info *rinfo = (struct radeonfb_info *)data;
	unsigned int lvds_gen_cntl = INREG(LVDS_GEN_CNTL);
	int* conv_table;

	/* Pardon me for that hack... maybe some day we can figure
	 * out in what direction backlight should work on a given
	 * panel ?
	 */
	if ((rinfo->arch == RADEON_M7 || rinfo->arch == RADEON_M9)
		&& !machine_is_compatible("PowerBook4,3"))
		conv_table = backlight_conv_m7;
	else
		conv_table = backlight_conv_m6;

	lvds_gen_cntl |= (LVDS_BL_MOD_EN | LVDS_BLON);
	if (on && (level > BACKLIGHT_OFF)) {
		lvds_gen_cntl |= LVDS_DIGON;
		if (!(lvds_gen_cntl & LVDS_ON)) {
			lvds_gen_cntl &= ~LVDS_BLON;
			OUTREG(LVDS_GEN_CNTL, lvds_gen_cntl);
			(void)INREG(LVDS_GEN_CNTL);
			mdelay(10);
			lvds_gen_cntl |= LVDS_BLON;
			OUTREG(LVDS_GEN_CNTL, lvds_gen_cntl);
		}
		lvds_gen_cntl &= ~LVDS_BL_MOD_LEVEL_MASK;
		lvds_gen_cntl |= (conv_table[level] <<
				  LVDS_BL_MOD_LEVEL_SHIFT);
		lvds_gen_cntl |= (LVDS_ON | LVDS_EN);
		lvds_gen_cntl &= ~LVDS_DISPLAY_DIS;
	} else {
		lvds_gen_cntl &= ~LVDS_BL_MOD_LEVEL_MASK;
		lvds_gen_cntl |= (conv_table[0] <<
				  LVDS_BL_MOD_LEVEL_SHIFT);
		lvds_gen_cntl |= LVDS_DISPLAY_DIS;
		OUTREG(LVDS_GEN_CNTL, lvds_gen_cntl);
		udelay(10);
		lvds_gen_cntl &= ~(LVDS_ON | LVDS_EN | LVDS_BLON | LVDS_DIGON);
	}

	OUTREG(LVDS_GEN_CNTL, lvds_gen_cntl);
	rinfo->init_state.lvds_gen_cntl &= ~LVDS_STATE_MASK;
	rinfo->init_state.lvds_gen_cntl |= (lvds_gen_cntl & LVDS_STATE_MASK);

	return 0;
}

static int radeon_set_backlight_level(int level, void *data)
{
	return radeon_set_backlight_enable(1, level, data);
}
#endif /* CONFIG_PMAC_BACKLIGHT */


#ifdef CONFIG_PMAC_PBOOK

static u32 dbg_clk;

/*
 * Radeon M6 Power Management code. This code currently only supports
 * the mobile chips, it's based from some informations provided by ATI
 * along with hours of tracing of MacOS drivers
 */
 
static void radeon_pm_save_regs(struct radeonfb_info *rinfo)
{
	rinfo->save_regs[0] = INPLL(PLL_PWRMGT_CNTL);
	rinfo->save_regs[1] = INPLL(CLK_PWRMGT_CNTL);
	rinfo->save_regs[2] = INPLL(MCLK_CNTL);
	rinfo->save_regs[3] = INPLL(SCLK_CNTL);
	rinfo->save_regs[4] = INPLL(CLK_PIN_CNTL);
	rinfo->save_regs[5] = INPLL(VCLK_ECP_CNTL);
	rinfo->save_regs[6] = INPLL(PIXCLKS_CNTL);
	rinfo->save_regs[7] = INPLL(MCLK_MISC);
	rinfo->save_regs[8] = INPLL(P2PLL_CNTL);
	
	rinfo->save_regs[9] = INREG(DISP_MISC_CNTL);
	rinfo->save_regs[10] = INREG(DISP_PWR_MAN);
	rinfo->save_regs[11] = INREG(LVDS_GEN_CNTL);
	rinfo->save_regs[12] = INREG(LVDS_PLL_CNTL);
	rinfo->save_regs[13] = INREG(TV_DAC_CNTL);
	rinfo->save_regs[14] = INREG(BUS_CNTL1);
	rinfo->save_regs[15] = INREG(CRTC_OFFSET_CNTL);
	rinfo->save_regs[16] = INREG(AGP_CNTL);
	rinfo->save_regs[17] = (INREG(CRTC_GEN_CNTL) & 0xfdffffff) | 0x04000000;
	rinfo->save_regs[18] = (INREG(CRTC2_GEN_CNTL) & 0xfdffffff) | 0x04000000;
	rinfo->save_regs[19] = INREG(GPIOPAD_A);
	rinfo->save_regs[20] = INREG(GPIOPAD_EN);
	rinfo->save_regs[21] = INREG(GPIOPAD_MASK);
	rinfo->save_regs[22] = INREG(ZV_LCDPAD_A);
	rinfo->save_regs[23] = INREG(ZV_LCDPAD_EN);
	rinfo->save_regs[24] = INREG(ZV_LCDPAD_MASK);
	rinfo->save_regs[25] = INREG(GPIO_VGA_DDC);
	rinfo->save_regs[26] = INREG(GPIO_DVI_DDC);
	rinfo->save_regs[27] = INREG(GPIO_MONID);
	rinfo->save_regs[28] = INREG(GPIO_CRT2_DDC);

	rinfo->save_regs[29] = INREG(SURFACE_CNTL);
	rinfo->save_regs[30] = INREG(MC_FB_LOCATION);
	rinfo->save_regs[31] = INREG(DISPLAY_BASE_ADDR);
	rinfo->save_regs[32] = INREG(MC_AGP_LOCATION);
	rinfo->save_regs[33] = INREG(CRTC2_DISPLAY_BASE_ADDR);
}

static void radeon_pm_restore_regs(struct radeonfb_info *rinfo)
{
	OUTPLL(P2PLL_CNTL, rinfo->save_regs[8] & 0xFFFFFFFE); /* First */
	
	OUTPLL(PLL_PWRMGT_CNTL, rinfo->save_regs[0]);
	OUTPLL(CLK_PWRMGT_CNTL, rinfo->save_regs[1]);
	OUTPLL(MCLK_CNTL, rinfo->save_regs[2]);
	OUTPLL(SCLK_CNTL, rinfo->save_regs[3]);
	OUTPLL(CLK_PIN_CNTL, rinfo->save_regs[4]);
	OUTPLL(VCLK_ECP_CNTL, rinfo->save_regs[5]);
	OUTPLL(PIXCLKS_CNTL, rinfo->save_regs[6]);
	OUTPLL(MCLK_MISC, rinfo->save_regs[7]);
	
	OUTREG(DISP_MISC_CNTL, rinfo->save_regs[9]);
	OUTREG(DISP_PWR_MAN, rinfo->save_regs[10]);
	OUTREG(LVDS_GEN_CNTL, rinfo->save_regs[11]);
	OUTREG(LVDS_PLL_CNTL,rinfo->save_regs[12]);
	OUTREG(TV_DAC_CNTL, rinfo->save_regs[13]);
	OUTREG(BUS_CNTL1, rinfo->save_regs[14]);
	OUTREG(CRTC_OFFSET_CNTL, rinfo->save_regs[15]);
	OUTREG(AGP_CNTL, rinfo->save_regs[16]);
	OUTREG(CRTC_GEN_CNTL, rinfo->save_regs[17]);
	OUTREG(CRTC2_GEN_CNTL, rinfo->save_regs[18]);

	// wait VBL before that one  ?
	OUTPLL(P2PLL_CNTL, rinfo->save_regs[8]);
	
	OUTREG(GPIOPAD_A, rinfo->save_regs[19]);
	OUTREG(GPIOPAD_EN, rinfo->save_regs[20]);
	OUTREG(GPIOPAD_MASK, rinfo->save_regs[21]);
	OUTREG(ZV_LCDPAD_A, rinfo->save_regs[22]);
	OUTREG(ZV_LCDPAD_EN, rinfo->save_regs[23]);
	OUTREG(ZV_LCDPAD_MASK, rinfo->save_regs[24]);
	OUTREG(GPIO_VGA_DDC, rinfo->save_regs[25]);
	OUTREG(GPIO_DVI_DDC, rinfo->save_regs[26]);
	OUTREG(GPIO_MONID, rinfo->save_regs[27]);
	OUTREG(GPIO_CRT2_DDC, rinfo->save_regs[28]);
}

static void radeon_pm_disable_iopad(struct radeonfb_info *rinfo)
{		
	OUTREG(GPIOPAD_MASK, 0x0001ffff);
	OUTREG(GPIOPAD_EN, 0x00000400);
	OUTREG(GPIOPAD_A, 0x00000000);		
        OUTREG(ZV_LCDPAD_MASK, 0x00000000);
        OUTREG(ZV_LCDPAD_EN, 0x00000000);
      	OUTREG(ZV_LCDPAD_A, 0x00000000); 	
	OUTREG(GPIO_VGA_DDC, 0x00030000);
	OUTREG(GPIO_DVI_DDC, 0x00000000);
	OUTREG(GPIO_MONID, 0x00030000);
	OUTREG(GPIO_CRT2_DDC, 0x00000000);
}

static void radeon_pm_program_v2clk(struct radeonfb_info *rinfo)
{
//
//	u32 reg;
//
//	OUTPLL(P2PLL_REF_DIV, 0x0c);
//
//      .../... figure out what macos does here
}

static void radeon_pm_low_current(struct radeonfb_info *rinfo)
{
	u32 reg;

	reg  = INREG(BUS_CNTL1);
	reg &= ~BUS_CNTL1_MOBILE_PLATFORM_SEL_MASK;
	reg |= BUS_CNTL1_AGPCLK_VALID | (1<<BUS_CNTL1_MOBILE_PLATFORM_SEL_SHIFT);
	OUTREG(BUS_CNTL1, reg);
	
	reg  = INPLL(PLL_PWRMGT_CNTL);
	reg |= PLL_PWRMGT_CNTL_SPLL_TURNOFF | PLL_PWRMGT_CNTL_PPLL_TURNOFF |
		PLL_PWRMGT_CNTL_P2PLL_TURNOFF | PLL_PWRMGT_CNTL_TVPLL_TURNOFF;
	reg &= ~PLL_PWRMGT_CNTL_SU_MCLK_USE_BCLK;
	reg &= ~PLL_PWRMGT_CNTL_MOBILE_SU;
	OUTPLL(PLL_PWRMGT_CNTL, reg);

//	reg  = INPLL(TV_PLL_CNTL1);
//	reg |= TV_PLL_CNTL1__TVPLL_RESET | TV_PLL_CNTL1__TVPLL_SLEEP;
//	OUTPLL(TV_PLL_CNTL1, reg);
	
	reg  = INREG(TV_DAC_CNTL);
	reg &= ~(TV_DAC_CNTL_BGADJ_MASK |TV_DAC_CNTL_DACADJ_MASK);
	reg |=TV_DAC_CNTL_BGSLEEP | TV_DAC_CNTL_RDACPD | TV_DAC_CNTL_GDACPD |
		TV_DAC_CNTL_BDACPD |
		(8<<TV_DAC_CNTL_BGADJ__SHIFT) | (8<<TV_DAC_CNTL_DACADJ__SHIFT);
	OUTREG(TV_DAC_CNTL, reg);
	
	reg  = INREG(TMDS_TRANSMITTER_CNTL);
	reg &= ~(TMDS_PLL_EN |TMDS_PLLRST);
	OUTREG(TMDS_TRANSMITTER_CNTL, reg);

//	lvds_pll_cntl  = regr32(g, LVDS_PLL_CNTL);
//	lvds_pll_cntl &= ~LVDS_PLL_CNTL__LVDS_PLL_EN;											
//	lvds_pll_cntl |=  LVDS_PLL_CNTL__LVDS_PLL_RESET;	
//	regw32(g, LVDS_PLL_CNTL, lvds_pll_cntl);

	reg = INREG(DAC_CNTL);
	reg &= ~DAC_CMP_EN;
	OUTREG(DAC_CNTL, reg);

	reg = INREG(DAC_CNTL2);
	reg &= ~DAC2_CMP_EN;
	OUTREG(DAC_CNTL2, reg);
	
	reg  = INREG(TV_DAC_CNTL);
	reg &= ~TV_DAC_CNTL_DETECT;
	OUTREG(TV_DAC_CNTL, reg);
}

static void radeon_pm_setup_for_suspend(struct radeonfb_info *rinfo)
{
	/* This code is disabled. It does what is in the pm_init
	 * function of the MacOS driver code ATI sent me. However,
	 * it doesn't fix my sleep problem, and is causing other issues
	 * on wakeup (bascially the machine dying when switching consoles
	 * I haven't had time to investigate this yet
	 */
#if 0
	u32 disp_misc_cntl;
	u32 disp_pwr_man;
	u32 temp;

	// set SPLL, MPLL, PPLL, P2PLL, TVPLL, SCLK, MCLK, PCLK, P2CLK,
	// TCLK and TEST_MODE to 0
	temp = INPLL(CLK_PWRMGT_CNTL);
	OUTPLL(CLK_PWRMGT_CNTL , temp & ~0xc00002ff);

	// Turn on Power Management
	temp = INPLL(CLK_PWRMGT_CNTL);
	OUTPLL(CLK_PWRMGT_CNTL , temp | 0x00000400);

	// Turn off display clock if using mobile chips
	temp = INPLL(CLK_PWRMGT_CNTL);
	OUTREG(CLK_PWRMGT_CNTL , temp | 0x00100000);

	// Force PIXCLK_ALWAYS_ON and PIXCLK_DAC_ALWAYS_ON
	temp = INPLL(VCLK_ECP_CNTL);
	OUTPLL(VCLK_ECP_CNTL, temp & ~0x000000c0);

	// Force ECP_FORCE_ON to 1
	temp = INPLL(VCLK_ECP_CNTL);
	OUTPLL(VCLK_ECP_CNTL, temp | 0x00040000);

	// Force PIXCLK_BLEND_ALWAYS_ON and PIXCLK_GV_ALWAYS_ON
	temp = INPLL(PIXCLKS_CNTL);
       	OUTPLL(PIXCLKS_CNTL, temp & ~0x00001800);

	// Forcing SCLK_CNTL to ON
	OUTPLL(SCLK_CNTL, (INPLL(SCLK_CNTL)& 0x00000007) | 0xffff8000 );

	// Set PM control over XTALIN pad
	temp = INPLL(CLK_PIN_CNTL);
	OUTPLL(CLK_PIN_CNTL, temp | 0x00080000);

	// Force MCLK and YCLK and MC as dynamic
    	temp = INPLL(MCLK_CNTL);
	OUTPLL(MCLK_CNTL, temp & 0xffeaffff);

	// PLL_TURNOFF
	temp = INPLL(PLL_PWRMGT_CNTL);
	OUTPLL(PLL_PWRMGT_CNTL, temp | 0x0000001f);
 
	// set MOBILE_SU to 1 if M6 or DDR64 is detected
	temp = INPLL(PLL_PWRMGT_CNTL);
	OUTPLL(PLL_PWRMGT_CNTL, temp | 0x00010000);

	// select PM access mode (PM_MODE_SEL) (use ACPI mode)
//      temp = INPLL(PLL_PWRMGT_CNTL);
//      OUTPLL(PLL_PWRMGT_CNTL, temp | 0x00002000);
	temp = INPLL(PLL_PWRMGT_CNTL);
        OUTPLL(PLL_PWRMGT_CNTL, temp & ~0x00002000);

	// set DISP_MISC_CNTL register
	disp_misc_cntl = INREG(DISP_MISC_CNTL);
	disp_misc_cntl &= ~(	DISP_MISC_CNTL_SOFT_RESET_GRPH_PP |
				DISP_MISC_CNTL_SOFT_RESET_SUBPIC_PP |
				DISP_MISC_CNTL_SOFT_RESET_OV0_PP |
				DISP_MISC_CNTL_SOFT_RESET_GRPH_SCLK |
				DISP_MISC_CNTL_SOFT_RESET_SUBPIC_SCLK |
				DISP_MISC_CNTL_SOFT_RESET_OV0_SCLK |
				DISP_MISC_CNTL_SOFT_RESET_GRPH2_PP |
				DISP_MISC_CNTL_SOFT_RESET_GRPH2_SCLK |
				DISP_MISC_CNTL_SOFT_RESET_LVDS |
				DISP_MISC_CNTL_SOFT_RESET_TMDS |
				DISP_MISC_CNTL_SOFT_RESET_DIG_TMDS |
				DISP_MISC_CNTL_SOFT_RESET_TV);
	OUTREG(DISP_MISC_CNTL, disp_misc_cntl);

	// set DISP_PWR_MAN register
	disp_pwr_man = INREG(DISP_PWR_MAN);
	// clau - 9.29.2000 - changes made to bit23:18 to set to 1 as requested by George
	disp_pwr_man |= (DISP_PWR_MAN_DIG_TMDS_ENABLE_RST |
                    DISP_PWR_MAN_TV_ENABLE_RST |
 //                 DISP_PWR_MAN_AUTO_PWRUP_EN |
                    DISP_PWR_MAN_DISP_D3_GRPH_RST |
                    DISP_PWR_MAN_DISP_D3_SUBPIC_RST |
                    DISP_PWR_MAN_DISP_D3_OV0_RST |
                    DISP_PWR_MAN_DISP_D1D2_GRPH_RST |
                    DISP_PWR_MAN_DISP_D1D2_SUBPIC_RST |
                    DISP_PWR_MAN_DISP_D1D2_OV0_RST);
	disp_pwr_man &= ~(DISP_PWR_MAN_DISP_PWR_MAN_D3_CRTC_EN |
                    DISP_PWR_MAN_DISP2_PWR_MAN_D3_CRTC2_EN|
                    DISP_PWR_MAN_DISP_D3_RST |
                    DISP_PWR_MAN_DISP_D3_REG_RST);
	OUTREG(DISP_PWR_MAN, disp_pwr_man);

	// clau - 10.24.2000
	// - add in setting for BUS_CNTL1 b27:26 = 0x01 and b31 = 0x1
	// - add in setting for AGP_CNTL  b7:0 = 0x20
	// - add in setting for DVI_DDC_DATA_OUT_EN b17:16 = 0x0

	// the following settings (two lines) are applied at a later part of this function, only on mobile platform
	// requres -mobile flag
	OUTREG(BUS_CNTL1, (INREG(BUS_CNTL1) & 0xf3ffffff) | 0x04000000);
	OUTREG(BUS_CNTL1,  INREG(BUS_CNTL1) | 0x80000000);
	OUTREG(AGP_CNTL, (INREG(AGP_CNTL) & 0xffffff00) | 0x20);
	OUTREG(GPIO_DVI_DDC, INREG(GPIO_DVI_DDC) & 0xfffcffff);

	// yulee - 12.12.2000
	// A12 only
	// EN_MCLK_TRISTATE_IN_SUSPEND@MCLK_MISC = 1
	// ACCESS_REGS_IN_SUSPEND@CLK_PIN_CNTL = 0
	// only on mobile platform
        OUTPLL(MCLK_MISC, INPLL(MCLK_MISC) | 0x00040000 );
    	
	// yulee -12.12.2000
	// AGPCLK_VALID@BUS_CNTL1 = 1
	// MOBILE_PLATFORM_SEL@BUS_CNTL1 = 01
	// CRTC_STEREO_SYNC_OUT_EN@CRTC_OFFSET_CNTL = 0
	// CG_CLK_TO_OUTPIN@CLK_PIN_CNTL = 0
	// only on mobile platform
        OUTPLL(CLK_PIN_CNTL, INPLL(CLK_PIN_CNTL ) & 0xFFFFF7FF );
        OUTREG(BUS_CNTL1, (INREG(BUS_CNTL1 ) & 0xF3FFFFFF) | 0x84000000 );
        OUTREG(CRTC_OFFSET_CNTL, INREG(CRTC_OFFSET_CNTL ) & 0xFFEFFFFF );

        mdelay(100);
#endif

	/* Disable CRTCs */
	OUTREG(CRTC_GEN_CNTL, (INREG(CRTC_GEN_CNTL) & ~CRTC_EN) | CRTC_DISP_REQ_EN_B);
	OUTREG(CRTC2_GEN_CNTL, (INREG(CRTC2_GEN_CNTL) & ~CRTC2_EN) | CRTC2_DISP_REQ_EN_B);
	(void)INREG(CRTC2_GEN_CNTL);
	mdelay(17);
}

static void radeon_set_suspend(struct radeonfb_info *rinfo, int suspend)
{
	u16 pwr_cmd;

	if (!rinfo->pm_reg)
		return;

	/* Set the chip into appropriate suspend mode (we use D2,
	 * D3 would require a compete re-initialization of the chip,
	 * including PCI config registers, clocks, AGP conf, ...)
	 */
	if (suspend) {
		/* According to ATI, we should program V2CLK here, I have
		 * to verify what's up exactly
		 */
		/* Save some registers */
		radeon_pm_save_regs(rinfo);

		/* Check that on M7 too, might work might not. M7 may also
		 * need explicit enabling of PM
		 */
		if (rinfo->arch == RADEON_M6) {
			/* Program V2CLK */
			radeon_pm_program_v2clk(rinfo);
		
			/* Disable IO PADs */
			radeon_pm_disable_iopad(rinfo);

			/* Set low current */
			radeon_pm_low_current(rinfo);

			/* Prepare chip for power management */
			radeon_pm_setup_for_suspend(rinfo);

			/* Reset the MDLL */
			OUTPLL(MDLL_CKO, INPLL(MDLL_CKO) | MCKOA_RESET);
			(void)INPLL(MDLL_RDCKA);
			OUTPLL(MDLL_CKO, INPLL(MDLL_CKO) & ~MCKOA_RESET);
			(void)INPLL(MDLL_RDCKA);
		}

		/* Switch PCI power managment to D2. */
		for (;;) {
			pci_read_config_word(
				rinfo->pdev, rinfo->pm_reg+PCI_PM_CTRL,
				&pwr_cmd);
			if (pwr_cmd & 2)
				break;			
			pci_write_config_word(
				rinfo->pdev, rinfo->pm_reg+PCI_PM_CTRL,
				(pwr_cmd & ~PCI_PM_CTRL_STATE_MASK) | 2);
			mdelay(500);
		}
	} else {
		/* Switch back PCI powermanagment to D0 */
		mdelay(200);
		pci_write_config_word(rinfo->pdev, rinfo->pm_reg+PCI_PM_CTRL, 0);
		mdelay(500);

		dbg_clk = INPLL(1);

		/* Do we need that on M7 ? */
		if (rinfo->arch == RADEON_M6) {
			/* Restore the MDLL */
			OUTPLL(MDLL_CKO, INPLL(MDLL_CKO) & ~MCKOA_RESET);
			(void)INPLL(MDLL_CKO);			
		}
		
		/* Restore some registers */
		radeon_pm_restore_regs(rinfo);
	}
}

/*
 * Save the contents of the framebuffer when we go to sleep,
 * and restore it when we wake up again.
 */

int radeon_sleep_notify(struct pmu_sleep_notifier *self, int when)
{
	struct radeonfb_info *rinfo;

	for (rinfo = board_list; rinfo != NULL; rinfo = rinfo->next) {
		struct fb_fix_screeninfo fix;
		int nb;
	        struct display *disp;  

        	disp = (rinfo->currcon < 0) ? rinfo->info.disp : &fb_display[rinfo->currcon];

		switch (rinfo->arch) {
			case RADEON_M6:
			case RADEON_M7:
			case RADEON_M9:
				break;
			default:
				return PBOOK_SLEEP_REFUSE;
		}

		radeonfb_get_fix(&fix, fg_console, (struct fb_info *)rinfo);
		nb = fb_display[fg_console].var.yres * fix.line_length;

		switch (when) {
			case PBOOK_SLEEP_NOW:
				acquire_console_sem();
				disp->dispsw = &fbcon_dummy;

				if (!noaccel) {
					/* Make sure engine is reset */
					radeon_engine_reset();
					radeon_engine_idle();
				}

				/* Blank display and LCD */
				radeonfb_blank(VESA_POWERDOWN+1,
					       (struct fb_info *)rinfo);

				/* Sleep */
				rinfo->asleep = 1;
				radeon_set_suspend(rinfo, 1);
				release_console_sem();
				
				break;
			case PBOOK_WAKE:
				acquire_console_sem();
				/* Wakeup */
				radeon_set_suspend(rinfo, 0);

				if (!noaccel)
					radeon_engine_init(rinfo);
				rinfo->asleep = 0;
				radeon_set_dispsw(rinfo, disp);
				radeon_load_video_mode(rinfo, &disp->var);
				do_install_cmap(rinfo->currcon < 0 ? 0 : rinfo->currcon,
						(struct fb_info *)rinfo);

				radeonfb_blank(0, (struct fb_info *)rinfo);
				release_console_sem();
				printk("CLK_PIN_CNTL on wakeup was: %08x\n", dbg_clk);
				break;
		}
	}

	return PBOOK_SLEEP_OK;
}

#endif /* CONFIG_PMAC_PBOOK */

static int radeonfb_pci_register (struct pci_dev *pdev,
				  const struct pci_device_id *ent)
{
	struct radeonfb_info *rinfo;
	struct radeon_chip_info *rci = &radeon_chip_info[ent->driver_data];
	u32 tmp;

	RTRACE("radeonfb_pci_register BEGIN\n");

	/* Enable device in PCI config */
	if (pci_enable_device(pdev) != 0) {
		printk(KERN_ERR "radeonfb: Cannot enable PCI device\n");
		return -ENODEV;
	}

	rinfo = kmalloc (sizeof (struct radeonfb_info), GFP_KERNEL);
	if (!rinfo) {
		printk ("radeonfb: could not allocate memory\n");
		return -ENODEV;
	}

	memset (rinfo, 0, sizeof (struct radeonfb_info));
	//info = &rinfo->info;
	rinfo->pdev = pdev;
	strcpy(rinfo->name, rci->name);
	rinfo->arch = rci->arch;

	/* Set base addrs */
	rinfo->fb_base_phys = pci_resource_start (pdev, 0);
	rinfo->mmio_base_phys = pci_resource_start (pdev, 2);

	/* request the mem regions */
	if (!request_mem_region (rinfo->fb_base_phys,
				 pci_resource_len(pdev, 0), "radeonfb")) {
		printk ("radeonfb: cannot reserve FB region\n");
		kfree (rinfo);
		return -ENODEV;
	}

	if (!request_mem_region (rinfo->mmio_base_phys,
				 pci_resource_len(pdev, 2), "radeonfb")) {
		printk ("radeonfb: cannot reserve MMIO region\n");
		release_mem_region (rinfo->fb_base_phys,
				    pci_resource_len(pdev, 0));
		kfree (rinfo);
		return -ENODEV;
	}

	/* map the regions */
	rinfo->mmio_base = ioremap (rinfo->mmio_base_phys, RADEON_REGSIZE);
	if (!rinfo->mmio_base) {
		printk ("radeonfb: cannot map MMIO\n");
		release_mem_region (rinfo->mmio_base_phys,
				    pci_resource_len(pdev, 2));
		release_mem_region (rinfo->fb_base_phys,
				    pci_resource_len(pdev, 0));
		kfree (rinfo);
		return -ENODEV;
	}

	rinfo->chipset = pdev->device;

	switch (rinfo->arch) {
		case RADEON_R100:
			rinfo->hasCRTC2 = 0;
			break;
		default:
			/* all the rest have it */
			rinfo->hasCRTC2 = 1;
			break;
	}
#if 0
	if (rinfo->arch == RADEON_M7) {
		/*
		 * Noticed some errors in accel with M7, will have to work these out...
		 */
		noaccel = 1;
	}
#endif
	if (mirror)
		printk("radeonfb: mirroring display to CRT\n");

	/* framebuffer size */
	tmp = INREG(CONFIG_MEMSIZE);

	/* mem size is bits [28:0], mask off the rest */
	rinfo->video_ram = tmp & CONFIG_MEMSIZE_MASK;

	/* ram type */
	tmp = INREG(MEM_SDRAM_MODE_REG);
	switch ((MEM_CFG_TYPE & tmp) >> 30) {
		case 0:
			/* SDR SGRAM (2:1) */
			strcpy(rinfo->ram_type, "SDR SGRAM");
			rinfo->ram.ml = 4;
			rinfo->ram.mb = 4;
			rinfo->ram.trcd = 1;
			rinfo->ram.trp = 2;
			rinfo->ram.twr = 1;
			rinfo->ram.cl = 2;
			rinfo->ram.loop_latency = 16;
			rinfo->ram.rloop = 16;
	
			break;
		case 1:
			/* DDR SGRAM */
			strcpy(rinfo->ram_type, "DDR SGRAM");
			rinfo->ram.ml = 4;
			rinfo->ram.mb = 4;
			rinfo->ram.trcd = 3;
			rinfo->ram.trp = 3;
			rinfo->ram.twr = 2;
			rinfo->ram.cl = 3;
			rinfo->ram.tr2w = 1;
			rinfo->ram.loop_latency = 16;
			rinfo->ram.rloop = 16;

			break;
		default:
			/* 64-bit SDR SGRAM */
			strcpy(rinfo->ram_type, "SDR SGRAM 64");
			rinfo->ram.ml = 4;
			rinfo->ram.mb = 8;
			rinfo->ram.trcd = 3;
			rinfo->ram.trp = 3;
			rinfo->ram.twr = 1;
			rinfo->ram.cl = 3;
			rinfo->ram.tr2w = 1;
			rinfo->ram.loop_latency = 17;
			rinfo->ram.rloop = 17;

			break;
	}

	rinfo->bios_seg = radeon_find_rom(rinfo);
	radeon_get_pllinfo(rinfo, rinfo->bios_seg);

	/*
	 * Hack to get around some busted production M6's
	 * reporting no ram
	 */
	if (rinfo->video_ram == 0) {
		switch (pdev->device) {
			case PCI_DEVICE_ID_ATI_RADEON_LY:
			case PCI_DEVICE_ID_ATI_RADEON_LZ:
				rinfo->video_ram = 8192 * 1024;
				break;
			default:
				break;
		}
	}


	RTRACE("radeonfb: probed %s %dk videoram\n", (rinfo->ram_type), (rinfo->video_ram/1024));

#if !defined(__powerpc__)
	radeon_get_moninfo(rinfo);
#else
	switch (pdev->device) {
		case PCI_DEVICE_ID_ATI_RADEON_LW:
		case PCI_DEVICE_ID_ATI_RADEON_LX:
		case PCI_DEVICE_ID_ATI_RADEON_LY:
		case PCI_DEVICE_ID_ATI_RADEON_LZ:
			rinfo->dviDisp_type = MT_LCD;
			break;
		default:
			radeon_get_moninfo(rinfo);
			break;
	}
#endif

	radeon_get_EDID(rinfo);

	if ((rinfo->dviDisp_type == MT_DFP) || (rinfo->dviDisp_type == MT_LCD) ||
	    (rinfo->crtDisp_type == MT_DFP)) {
		if (!radeon_get_dfpinfo(rinfo)) {
			iounmap(rinfo->mmio_base);
			release_mem_region (rinfo->mmio_base_phys,
					    pci_resource_len(pdev, 2));
			release_mem_region (rinfo->fb_base_phys,
					    pci_resource_len(pdev, 0));
			kfree (rinfo);
			return -ENODEV;
		}
	}

	rinfo->fb_base = ioremap (rinfo->fb_base_phys, rinfo->video_ram);
	if (!rinfo->fb_base) {
		printk ("radeonfb: cannot map FB\n");
		iounmap(rinfo->mmio_base);
		release_mem_region (rinfo->mmio_base_phys,
				    pci_resource_len(pdev, 2));
		release_mem_region (rinfo->fb_base_phys,
				    pci_resource_len(pdev, 0));
		kfree (rinfo);
		return -ENODEV;
	}

	/* I SHOULD FIX THAT CRAP ! I should probably mimmic XFree DRI
	 * driver setup here.
	 * 
	 * On PPC, OF based cards setup the internal memory
	 * mapping in strange ways. We change it so that the
	 * framebuffer is mapped at 0 and given half of the card's
	 * address space (2Gb). AGP is mapped high (0xe0000000) and
	 * can use up to 512Mb. Once DRI is fully implemented, we
	 * will have to setup the PCI remapper to remap the agp_special_page
	 * memory page somewhere between those regions so that the card
	 * use a normal PCI bus master cycle to access the ring read ptr.
	 * --BenH.
	 */
#ifdef CONFIG_ALL_PPC
	if (rinfo->hasCRTC2)
		OUTREG(CRTC2_GEN_CNTL,
			(INREG(CRTC2_GEN_CNTL) & ~CRTC2_EN) | CRTC2_DISP_REQ_EN_B);
	OUTREG(CRTC_EXT_CNTL, INREG(CRTC_EXT_CNTL) | CRTC_DISPLAY_DIS);
	OUTREG(MC_FB_LOCATION, 0x7fff0000);
	OUTREG(MC_AGP_LOCATION, 0xffffe000);
	OUTREG(DISPLAY_BASE_ADDR, 0x00000000);
	if (rinfo->hasCRTC2)
		OUTREG(CRTC2_DISPLAY_BASE_ADDR, 0x00000000);
	OUTREG(SRC_OFFSET, 0x00000000);
	OUTREG(DST_OFFSET, 0x00000000);
	mdelay(10);
	OUTREG(CRTC_EXT_CNTL, INREG(CRTC_EXT_CNTL) & ~CRTC_DISPLAY_DIS);
#endif /* CONFIG_ALL_PPC */

	/* save current mode regs before we switch into the new one
	 * so we can restore this upon __exit
	 */
	radeon_save_state (rinfo, &rinfo->init_state);

	/* set all the vital stuff */
	radeon_set_fbinfo (rinfo);

	pci_set_drvdata(pdev, rinfo);
	rinfo->next = board_list;
	board_list = rinfo;
	((struct fb_info *) rinfo)->device = &pdev->dev;
	if (register_framebuffer ((struct fb_info *) rinfo) < 0) {
		printk ("radeonfb: could not register framebuffer\n");
		iounmap(rinfo->fb_base);
		iounmap(rinfo->mmio_base);
		release_mem_region (rinfo->mmio_base_phys,
				    pci_resource_len(pdev, 2));
		release_mem_region (rinfo->fb_base_phys,
				    pci_resource_len(pdev, 0));
		kfree (rinfo);
		return -ENODEV;
	}

#ifdef CONFIG_MTRR
	rinfo->mtrr_hdl = nomtrr ? -1 : mtrr_add(rinfo->fb_base_phys,
						 rinfo->video_ram,
						 MTRR_TYPE_WRCOMB, 1);
#endif

#ifdef CONFIG_PMAC_BACKLIGHT
	if (rinfo->dviDisp_type == MT_LCD)
		register_backlight_controller(&radeon_backlight_controller,
					      rinfo, "ati");
#endif

#ifdef CONFIG_PMAC_PBOOK
	if (rinfo->dviDisp_type == MT_LCD) {
		rinfo->pm_reg = pci_find_capability(pdev, PCI_CAP_ID_PM);
		pmu_register_sleep_notifier(&radeon_sleep_notifier);
	}
#endif

	printk ("radeonfb: ATI Radeon %s %s %d MB\n", rinfo->name, rinfo->ram_type,
		(rinfo->video_ram/(1024*1024)));

	if (rinfo->hasCRTC2) {
		printk("radeonfb: DVI port %s monitor connected\n",
			GET_MON_NAME(rinfo->dviDisp_type));
		printk("radeonfb: CRT port %s monitor connected\n",
			GET_MON_NAME(rinfo->crtDisp_type));
	} else {
		printk("radeonfb: CRT port %s monitor connected\n",
			GET_MON_NAME(rinfo->crtDisp_type));
	}

	RTRACE("radeonfb_pci_register END\n");

	return 0;
}



static void __devexit radeonfb_pci_unregister (struct pci_dev *pdev)
{
        struct radeonfb_info *rinfo = pci_get_drvdata(pdev);
 
        if (!rinfo)
                return;
 
	/* restore original state
	 * 
	 * Doesn't quite work yet, possibly because of the PPC hacking
	 * I do on startup, disable for now. --BenH
	 */
        radeon_write_mode (rinfo, &rinfo->init_state);
 
#ifdef CONFIG_MTRR
	if (rinfo->mtrr_hdl >= 0)
		mtrr_del(rinfo->mtrr_hdl, 0, 0);
#endif

        unregister_framebuffer ((struct fb_info *) rinfo);
                
        iounmap(rinfo->mmio_base);
        iounmap(rinfo->fb_base);
 
	release_mem_region (rinfo->mmio_base_phys,
			    pci_resource_len(pdev, 2));
	release_mem_region (rinfo->fb_base_phys,
			    pci_resource_len(pdev, 0));
        
        kfree (rinfo);
}


static struct pci_driver radeonfb_driver = {
	.name		= "radeonfb",
	.id_table	= radeonfb_pci_table,
	.probe		= radeonfb_pci_register,
	.remove		= __devexit_p(radeonfb_pci_unregister),
};

#ifndef MODULE
static int __init radeonfb_old_setup (char *options)
{
        char *this_opt;

        if (!options || !*options)
                return 0;
 
	while ((this_opt = strsep (&options, ",")) != NULL) {
		if (!*this_opt)
			continue;
                if (!strncmp(this_opt, "noaccel", 7)) {
			noaccel = 1;
                } else if (!strncmp(this_opt, "mirror", 6)) {
			mirror = 1;
		} else if (!strncmp(this_opt, "dfp", 3)) {
			force_dfp = 1;
		} else if (!strncmp(this_opt, "panel_yres:", 11)) {
			panel_yres = simple_strtoul((this_opt+11), NULL, 0);
		} else if (!strncmp(this_opt, "nomtrr", 6)) {
			nomtrr = 1;
                } else
			mode_option = this_opt;
        }

	return 0;
}
#endif  /*  MODULE  */

static int __init radeonfb_old_init (void)
{
#ifndef MODULE
	char *option = NULL;

	if (fb_get_options("radeonfb_old", &option))
		return -ENODEV;
	radeonfb_old_setup(option);
#endif
	return pci_register_driver (&radeonfb_driver);
}


static void __exit radeonfb_old_exit (void)
{
	pci_unregister_driver (&radeonfb_driver);
}

module_init(radeonfb_old_init);
module_exit(radeonfb_old_exit);


MODULE_AUTHOR("Ani Joshi");
MODULE_DESCRIPTION("framebuffer driver for ATI Radeon chipset");
MODULE_LICENSE("GPL");