tridentfb.c

来自「Linux Kernel 2.6.9 for OMAP1710」· C语言 代码 · 共 1,298 行 · 第 1/3 页

/*
 * Frame buffer driver for Trident Blade and Image series
 *
 * Copyright 2001,2002 - Jani Monoses   <[e-mail]>
 *
 *
 * CREDITS:(in order of appearance)
 * 	skeletonfb.c by Geert Uytterhoeven and other fb code in drivers/video
 * 	Special thanks ;) to Mattia Crivellini <[e-mail]>
 * 	much inspired by the XFree86 4.x Trident driver sources by Alan Hourihane
 * 	the FreeVGA project
 *	Francesco Salvestrini <[e-mail]> XP support,code,suggestions
 * TODO:
 * 	timing value tweaking so it looks good on every monitor in every mode
 *	TGUI acceleration	
 */

#include <linux/config.h>
#include <linux/module.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/pci.h>

#include <linux/delay.h>
#include <video/trident.h>

#define VERSION		"0.7.8-NEWAPI"

struct tridentfb_par {
	int vclk;		//in MHz
	void __iomem * io_virt;	//iospace virtual memory address
};

unsigned char eng_oper;		//engine operation...
static struct fb_ops tridentfb_ops;

static struct tridentfb_par default_par;

/* FIXME:kmalloc these 3 instead */
static struct fb_info fb_info;
static int pseudo_pal[16];


static struct fb_var_screeninfo default_var;

static struct fb_fix_screeninfo tridentfb_fix = {
	.id = "Trident",	
	.type = FB_TYPE_PACKED_PIXELS,
	.ypanstep = 1,
	.visual = FB_VISUAL_PSEUDOCOLOR,
	.accel = FB_ACCEL_NONE,
};

static int chip_id;

static int defaultaccel;
static int displaytype;


/* defaults which are normally overriden by user values */

/* video mode */
static char * mode = "640x480";
static int bpp = 8;

static int noaccel;

static int center;
static int stretch;

static int fp;
static int crt;

static int memsize;
static int memdiff;
static int nativex;


MODULE_PARM(mode,"s");
MODULE_PARM(bpp,"i");
MODULE_PARM(center,"i");
MODULE_PARM(stretch,"i");
MODULE_PARM(noaccel,"i");
MODULE_PARM(memsize,"i");
MODULE_PARM(memdiff,"i");
MODULE_PARM(nativex,"i");
MODULE_PARM(fp,"i");
MODULE_PARM(crt,"i");


static int chip3D;
static int chipcyber;

int is3Dchip(int id)
{
	return 	((id == BLADE3D) || (id == CYBERBLADEE4) ||
		 (id == CYBERBLADEi7) || (id == CYBERBLADEi7D) ||
		 (id == CYBER9397) || (id == CYBER9397DVD) ||
		 (id == CYBER9520) || (id == CYBER9525DVD) ||
		 (id == IMAGE975) || (id == IMAGE985) ||
		 (id == CYBERBLADEi1) || (id == CYBERBLADEi1D) ||
		 (id ==	CYBERBLADEAi1) || (id == CYBERBLADEAi1D) ||
		 (id ==	CYBERBLADEXPm8) || (id == CYBERBLADEXPm16) ||
		 (id ==	CYBERBLADEXPAi1));
}

int iscyber(int id)
{
	switch (id) {
		case CYBER9388:		
		case CYBER9382:
		case CYBER9385:
		case CYBER9397:
		case CYBER9397DVD:
		case CYBER9520:
		case CYBER9525DVD:
		case CYBERBLADEE4:
		case CYBERBLADEi7D:
		case CYBERBLADEi1:
		case CYBERBLADEi1D: 
		case CYBERBLADEAi1: 
		case CYBERBLADEAi1D:
		case CYBERBLADEXPAi1:
			return 1;
		
		case CYBER9320:
		case TGUI9660:     
		case IMAGE975:
		case IMAGE985:
		case BLADE3D:
		case CYBERBLADEi7: /* VIA MPV4 integrated version */

		default:
			/* case CYBERBLDAEXPm8:	 Strange */
			/* case CYBERBLDAEXPm16: Strange */
			return 0;
	}
}

#define CRT 0x3D0		//CRTC registers offset for color display

#ifndef TRIDENT_MMIO
	#define TRIDENT_MMIO 1
#endif

#if TRIDENT_MMIO
	#define t_outb(val,reg)	writeb(val,((struct tridentfb_par *)(fb_info.par))->io_virt + reg)
	#define t_inb(reg)	readb(((struct tridentfb_par*)(fb_info.par))->io_virt + reg)
#else
	#define t_outb(val,reg) outb(val,reg)
	#define t_inb(reg) inb(reg)
#endif


static struct accel_switch {
	void (*init_accel)(int,int);
	void (*wait_engine)(void);
	void (*fill_rect)(__u32,__u32,__u32,__u32,__u32,__u32);
	void (*copy_rect)(__u32,__u32,__u32,__u32,__u32,__u32);
} *acc;

#define writemmr(r,v)	writel(v, ((struct tridentfb_par *)fb_info.par)->io_virt + r)
#define readmmr(r)	readl(((struct tridentfb_par *)fb_info.par)->io_virt + r)



/*
 * Blade specific acceleration.
 */

#define point(x,y) ((y)<<16|(x))
#define STA	0x2120
#define CMD	0x2144
#define ROP	0x2148
#define CLR	0x2160
#define SR1	0x2100
#define SR2	0x2104
#define DR1	0x2108
#define DR2	0x210C

#define ROP_S	0xCC

static void blade_init_accel(int pitch,int bpp)
{
	int v1 = (pitch>>3)<<20;
	int tmp = 0,v2;
	switch (bpp) {
		case 8:tmp = 0;break;
		case 15:tmp = 5;break;
		case 16:tmp = 1;break;
		case 24:
		case 32:tmp = 2;break;
	}
	v2 = v1 | (tmp<<29);
	writemmr(0x21C0,v2);
	writemmr(0x21C4,v2);
	writemmr(0x21B8,v2);
	writemmr(0x21BC,v2);
	writemmr(0x21D0,v1);
	writemmr(0x21D4,v1);
	writemmr(0x21C8,v1);
	writemmr(0x21CC,v1);
	writemmr(0x216C,0);
}

static void blade_wait_engine(void)
{
	while(readmmr(STA) & 0xFA800000);
}

static void blade_fill_rect(__u32 x,__u32 y,__u32 w,__u32 h,__u32 c,__u32 rop)
{
	writemmr(CLR,c);
	writemmr(ROP,rop ? 0x66:ROP_S);
	writemmr(CMD,0x20000000|1<<19|1<<4|2<<2);

	writemmr(DR1,point(x,y));
	writemmr(DR2,point(x+w-1,y+h-1));
}

static void blade_copy_rect(__u32 x1,__u32 y1,__u32 x2,__u32 y2,__u32 w,__u32 h)
{
	__u32 s1,s2,d1,d2;
	int direction = 2;
	s1 = point(x1,y1);
	s2 = point(x1+w-1,y1+h-1);
	d1 = point(x2,y2);
	d2 = point(x2+w-1,y2+h-1);

	if ((y1 > y2) || ((y1 == y2) && (x1 > x2)))
			direction = 0;


	writemmr(ROP,ROP_S);
	writemmr(CMD,0xE0000000|1<<19|1<<4|1<<2|direction);

	writemmr(SR1,direction?s2:s1);
	writemmr(SR2,direction?s1:s2);
	writemmr(DR1,direction?d2:d1);
	writemmr(DR2,direction?d1:d2);
}

static struct accel_switch accel_blade = {
	blade_init_accel,
	blade_wait_engine,
	blade_fill_rect,
	blade_copy_rect,
};


/*
 * BladeXP specific acceleration functions
 */

#define ROP_P 0xF0
#define masked_point(x,y) ((y & 0xffff)<<16|(x & 0xffff))

static void xp_init_accel(int pitch,int bpp)
{
	int tmp = 0,v1;
	unsigned char x = 0;

	switch (bpp) {
		case 8:  x = 0; break;
		case 16: x = 1; break;
		case 24: x = 3; break;
		case 32: x = 2; break;
	}

	switch (pitch << (bpp >> 3)) {
		case 8192:
		case 512:  x |= 0x00; break;
		case 1024: x |= 0x04; break;
		case 2048: x |= 0x08; break;
		case 4096: x |= 0x0C; break;
	}

	t_outb(x,0x2125);

	eng_oper = x | 0x40;

	switch (bpp) {
		case 8:  tmp = 18; break;
		case 15:
		case 16: tmp = 19; break;
		case 24:
		case 32: tmp = 20; break;
	}

	v1 = pitch << tmp;

	writemmr(0x2154,v1);
	writemmr(0x2150,v1);
	t_outb(3,0x2126);
}

static void xp_wait_engine(void)
{
	int busy;
	int count, timeout;

	count = 0;
	timeout = 0;
	for (;;) {
		busy = t_inb(STA) & 0x80;
		if (busy != 0x80)
			return;
		count++;
		if (count == 10000000) {
			/* Timeout */
			count = 9990000;
			timeout++;
			if (timeout == 8) {
				/* Reset engine */
				t_outb(0x00, 0x2120);
				return;
			}
		}
	}
}

static void xp_fill_rect(__u32 x,__u32 y,__u32 w,__u32 h,__u32 c,__u32 rop)
{
	writemmr(0x2127,ROP_P);
	writemmr(0x2158,c);
	writemmr(0x2128,0x4000);
	writemmr(0x2140,masked_point(h,w));
	writemmr(0x2138,masked_point(y,x));
	t_outb(0x01,0x2124);
        t_outb(eng_oper,0x2125);
}

static void xp_copy_rect(__u32 x1,__u32 y1,__u32 x2,__u32 y2,__u32 w,__u32 h)
{
	int direction;
	__u32 x1_tmp, x2_tmp, y1_tmp, y2_tmp;

	direction = 0x0004;
	
	if ((x1 < x2) && (y1 == y2)) {
		direction |= 0x0200;
		x1_tmp = x1 + w - 1;
		x2_tmp = x2 + w - 1;
	} else {
		x1_tmp = x1;
		x2_tmp = x2;
	}
  
	if (y1 < y2) {
		direction |= 0x0100;
		y1_tmp = y1 + h - 1;
		y2_tmp = y2 + h - 1;
  	} else {
		y1_tmp = y1;
		y2_tmp = y2;
	}

	writemmr(0x2128,direction);	
	t_outb(ROP_S,0x2127);
	writemmr(0x213C,masked_point(y1_tmp,x1_tmp));
	writemmr(0x2138,masked_point(y2_tmp,x2_tmp));
	writemmr(0x2140,masked_point(h,w));
	t_outb(0x01,0x2124);
}

static struct accel_switch accel_xp = {
  	xp_init_accel,
	xp_wait_engine,
	xp_fill_rect,
	xp_copy_rect,
};


/*
 * Image specific acceleration functions
 */
static void image_init_accel(int pitch,int bpp)
{
	int tmp = 0;
   	switch (bpp) {
		case 8:tmp = 0;break;
		case 15:tmp = 5;break;
		case 16:tmp = 1;break;
		case 24:
		case 32:tmp = 2;break;
	}
	writemmr(0x2120, 0xF0000000);
	writemmr(0x2120, 0x40000000|tmp);
	writemmr(0x2120, 0x80000000);
	writemmr(0x2144, 0x00000000);
	writemmr(0x2148, 0x00000000);
	writemmr(0x2150, 0x00000000);
	writemmr(0x2154, 0x00000000);
	writemmr(0x2120, 0x60000000|(pitch<<16) |pitch);
	writemmr(0x216C, 0x00000000);
	writemmr(0x2170, 0x00000000);
	writemmr(0x217C, 0x00000000);
	writemmr(0x2120, 0x10000000);
	writemmr(0x2130, (2047 << 16) | 2047);
}

static void image_wait_engine(void)
{
	while(readmmr(0x2164) & 0xF0000000);
}

static void image_fill_rect(__u32 x, __u32 y, __u32 w, __u32 h, __u32 c, __u32 rop)
{
	writemmr(0x2120,0x80000000);
	writemmr(0x2120,0x90000000|ROP_S);

	writemmr(0x2144,c);

	writemmr(DR1,point(x,y));
	writemmr(DR2,point(x+w-1,y+h-1));

	writemmr(0x2124,0x80000000|3<<22|1<<10|1<<9);
}

static void image_copy_rect(__u32 x1,__u32 y1,__u32 x2,__u32 y2,__u32 w,__u32 h)
{
	__u32 s1,s2,d1,d2;
	int direction = 2;
	s1 = point(x1,y1);
	s2 = point(x1+w-1,y1+h-1);
	d1 = point(x2,y2);
	d2 = point(x2+w-1,y2+h-1);

	if ((y1 > y2) || ((y1 == y2) && (x1 >x2)))
			direction = 0;

	writemmr(0x2120,0x80000000);
	writemmr(0x2120,0x90000000|ROP_S);