/*
* $Id: hitfb.c,v 1.10 2004/02/01 19:46:04 lethal Exp $
* linux/drivers/video/hitfb.c -- Hitachi LCD frame buffer device
* (C) 1999 Mihai Spatar
* (C) 2000 YAEGASHI Takeshi
* (C) 2003, 2004 Paul Mundt
* (C) 2003 Andriy Skulysh
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive for
* more details.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.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/init.h>
#include <linux/fb.h>
#include <asm/machvec.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
#include <asm/io.h>
#include <asm/hd64461/hd64461.h>
static struct fb_var_screeninfo hitfb_var __initdata = {
.activate = FB_ACTIVATE_NOW,
.height = -1,
.width = -1,
.vmode = FB_VMODE_NONINTERLACED,
};
static struct fb_fix_screeninfo hitfb_fix __initdata = {
.id = "Hitachi HD64461",
.type = FB_TYPE_PACKED_PIXELS,
.ypanstep = 8,
.accel = FB_ACCEL_NONE,
};
static u32 pseudo_palette[16];
static struct fb_info fb_info;
#define WIDTH 640
static void hitfb_set_base(u32 offset)
{
fb_writew(offset>>10,HD64461_LCDCBAR);
}
static inline void hitfb_accel_wait()
{
while (fb_readw(HD64461_GRCFGR) & HD64461_GRCFGR_ACCSTATUS)
;
}
static inline void hitfb_accel_start(int truecolor)
{
if (truecolor) {
fb_writew(6,HD64461_GRCFGR);
} else {
fb_writew(7,HD64461_GRCFGR);
}
}
static inline void hitfb_accel_set_dest(int truecolor, u16 dx, u16 dy,
u16 width, u16 height)
{
u32 saddr=WIDTH*dy+dx;
if (truecolor)
saddr <<= 1;
fb_writew(width,HD64461_BBTDWR);
fb_writew(height,HD64461_BBTDHR);
fb_writew(saddr&0xffff,HD64461_BBTDSARL);
fb_writew(saddr>>16,HD64461_BBTDSARH);
}
static inline void hitfb_accel_solidfill(int truecolor, u16 dx, u16 dy,
u16 width, u16 height, u16 color)
{
hitfb_accel_set_dest(truecolor,dx,dy,width,height);
fb_writew(0x00f0,HD64461_BBTROPR);
fb_writew(16,HD64461_BBTMDR);
fb_writew(color,HD64461_GRSCR);
hitfb_accel_start(truecolor);
}
static inline void hitfb_accel_bitblt(int truecolor, u16 sx, u16 sy, u16 dx, u16 dy,
u16 width, u16 height, u16 rop, u32 mask_addr)
{
u32 saddr,daddr;
u32 maddr=0;
fb_writew(rop,HD64461_BBTROPR);
if((sy<dy)||((sy==dy)&&(sx<=dx))) {
saddr=WIDTH*(sy+height)+sx+width;
daddr=WIDTH*(dy+height)+dx+width;
if (mask_addr) {
if (truecolor) {
maddr=((width>>3)+1)*(height+1)-1;
} else {
maddr=(((width>>4)+1)*(height+1)-1)*2;
}
fb_writew((1<<5)|1,HD64461_BBTMDR);
} else {
fb_writew(1,HD64461_BBTMDR);
}
} else {
saddr=WIDTH*sy+sx;
daddr=WIDTH*dy+dx;
if (mask_addr) {
fb_writew((1<<5),HD64461_BBTMDR);
} else {
outw(0,HD64461_BBTMDR);
}
}
if (truecolor) {
saddr<<=1;
daddr<<=1;
}
fb_writew(width,HD64461_BBTDWR);
fb_writew(height,HD64461_BBTDHR);
fb_writew(saddr&0xffff,HD64461_BBTSSARL);
fb_writew(saddr>>16,HD64461_BBTSSARH);
fb_writew(daddr&0xffff,HD64461_BBTDSARL);
fb_writew(daddr>>16,HD64461_BBTDSARH);
if (mask_addr) {
maddr+=mask_addr;
fb_writew(maddr&0xffff,HD64461_BBTMARL);
fb_writew(maddr>>16,HD64461_BBTMARH);
}
hitfb_accel_start(truecolor);
}
static void hitfb_fillrect(struct fb_info *p, const struct fb_fillrect *rect)
{
if (rect->rop != ROP_COPY) {
cfb_fillrect(p,rect);
} else {
fb_writew(0x00f0,HD64461_BBTROPR);
fb_writew(16,HD64461_BBTMDR);
if (p->var.bits_per_pixel==16) {
fb_writew( ((u32*)(p->pseudo_palette))[rect->color] , HD64461_GRSCR );
hitfb_accel_set_dest(1,rect->dx,rect->dy,rect->width,rect->height);
hitfb_accel_start(1);
} else {
fb_writew(rect->color, HD64461_GRSCR);
hitfb_accel_set_dest(0,rect->dx,rect->dy,rect->width,rect->height);
hitfb_accel_start(0);
}
hitfb_accel_wait();
}
}
static void hitfb_copyarea(struct fb_info *p, const struct fb_copyarea *area)
{
hitfb_accel_bitblt(p->var.bits_per_pixel==16,area->sx,area->sy,
area->dx,area->dy,area->width,area->height,0x00cc,0);
hitfb_accel_wait();
}
static int hitfb_pan_display(struct fb_var_screeninfo *var,
struct fb_info *info)
{
int xoffset = var->xoffset;
int yoffset = var->yoffset;
if (xoffset!=0)
return -EINVAL;
hitfb_set_base(yoffset*2*640);
return 0;
}
int hitfb_blank(int blank_mode, struct fb_info *info)
{
unsigned short v;
if (blank_mode) {
v = fb_readw(HD64461_LDR1);
v &= ~HD64461_LDR1_DON;
fb_writew(v, HD64461_LDR1);
v = fb_readw(HD64461_LCDCCR);
v |= HD64461_LCDCCR_MOFF;
fb_writew(v, HD64461_LCDCCR);
v = fb_readw(HD64461_STBCR);
v |= HD64461_STBCR_SLCDST;
fb_writew(v, HD64461_STBCR);
} else {
v = fb_readw(HD64461_STBCR);
v &= ~HD64461_STBCR_SLCDST;
fb_writew(v, HD64461_STBCR);
v = fb_readw(HD64461_LDR1);
v |= HD64461_LDR1_DON;
fb_writew(v, HD64461_LDR1);
v = fb_readw(HD64461_LCDCCR);
v &= ~HD64461_LCDCCR_MOFF;
fb_writew(v, HD64461_LCDCCR);
}
return 0;
}
static int hitfb_setcolreg(unsigned regno, unsigned red, unsigned green,
unsigned blue, unsigned transp,
struct fb_info *info)
{
if (regno >= info->cmap.len)
return 1;
switch (info->var.bits_per_pixel) {
case 8:
fb_writew(regno << 8, HD64461_CPTWAR);
fb_writew(red >> 10, HD64461_CPTWDR);
fb_writew(green >> 10, HD64461_CPTWDR);
fb_writew(blue >> 10, HD64461_CPTWDR);
break;
case 16:
((u32*)(info->pseudo_palette))[regno] =
((red & 0xf800) ) |
((green & 0xfc00) >> 5) |
((blue & 0xf800) >> 11);
break;
}
return 0;
}
static int hitfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
{
switch (hitfb_var.bits_per_pixel) {
case 8:
hitfb_var.red.offset = 0;
hitfb_var.red.length = 8;
hitfb_var.green.offset = 0;
hitfb_var.green.length = 8;
hitfb_var.blue.offset = 0;
hitfb_var.blue.length = 8;
hitfb_var.transp.offset = 0;
hitfb_var.transp.length = 0;
break;
case 16: /* RGB 565 */
hitfb_var.red.offset = 11;
hitfb_var.red.length = 5;
hitfb_var.green.offset = 5;
hitfb_var.green.length = 6;
hitfb_var.blue.offset = 0;
hitfb_var.blue.length = 5;
hitfb_var.transp.offset = 0;
hitfb_var.transp.length = 0;
break;
}
return 0;
}
static struct fb_ops hitfb_ops = {
.owner = THIS_MODULE,
.fb_check_var = hitfb_check_var,
.fb_set_par = hitfb_set_par,
.fb_setcolreg = hitfb_setcolreg,
.fb_pan_display = hitfb_pan_display,
.fb_blank = hitfb_blank,
.fb_fillrect = hitfb_fillrect,
.fb_copyarea = hitfb_copyarea,
.fb_imageblit = cfb_imageblit,
.fb_cursor = soft_cursor,
};
int __init hitfb_init(void)
{
unsigned short lcdclor, ldr3, ldvndr;
int size;
hitfb_fix.smem_start = CONFIG_HD64461_IOBASE + 0x02000000;
hitfb_fix.smem_len = (MACH_HP690) ? 1024*1024 : 512*1024;
lcdclor = inw(HD64461_LCDCLOR);
ldvndr = inw(HD64461_LDVNDR);
ldr3 = inw(HD64461_LDR3);
switch (ldr3&15) {
default:
case 4:
hitfb_var.bits_per_pixel = 8;
hitfb_var.xres = lcdclor;
break;
case 8:
hitfb_var.bits_per_pixel = 16;
hitfb_var.xres = lcdclor/2;
break;
}
/* XXX: Most of this should go into hitfb_set_par().. --PFM. */
hitfb_fix.line_length = lcdclor;
hitfb_fix.visual = (hitfb_var.bits_per_pixel == 8) ?
FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
hitfb_var.yres = ldvndr+1;
hitfb_var.xres_virtual = hitfb_var.xres;
hitfb_var.yres_virtual = hitfb_fix.smem_len/lcdclor;
fb_info.fbops = &hitfb_ops;
fb_info.var = hitfb_var;
fb_info.fix = hitfb_fix;
fb_info.pseudo_palette = pseudo_palette;
fb_info.flags = FBINFO_FLAG_DEFAULT;
fb_info.screen_base = (void *) hitfb_fix.smem_start;
size = (fb_info.var.bits_per_pixel == 8) ? 256 : 16;
fb_alloc_cmap(&fb_info.cmap, size, 0);
if (register_framebuffer(&fb_info) < 0)
return -EINVAL;
printk(KERN_INFO "fb%d: %s frame buffer device\n",
fb_info.node, fb_info.fix.id);
return 0;
}
static void __exit hitfb_exit(void)
{
unregister_framebuffer(&fb_info);
}
#ifdef MODULE
module_init(hitfb_init);
module_exit(hitfb_exit);
#endif
MODULE_LICENSE("GPL");
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