Commit a140e94d authored by Krzysztof Helt's avatar Krzysztof Helt Committed by David S. Miller

[CG6]: accelerated copyarea

This patch adds accelerated copyarea and sets READS_FAST flag.
This doubles scrolling speed on SparcStation20 85MHz.

It also fixes a comment in cg6_fillrect function.
Signed-off-by: default avatarKrzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6993bea1
......@@ -37,6 +37,7 @@ static void cg6_fillrect(struct fb_info *, const struct fb_fillrect *);
static int cg6_sync(struct fb_info *);
static int cg6_mmap(struct fb_info *, struct vm_area_struct *);
static int cg6_ioctl(struct fb_info *, unsigned int, unsigned long);
static void cg6_copyarea(struct fb_info *info, const struct fb_copyarea *area);
/*
* Frame buffer operations
......@@ -47,7 +48,7 @@ static struct fb_ops cg6_ops = {
.fb_setcolreg = cg6_setcolreg,
.fb_blank = cg6_blank,
.fb_fillrect = cg6_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_copyarea = cg6_copyarea,
.fb_imageblit = cg6_imageblit,
.fb_sync = cg6_sync,
.fb_mmap = cg6_mmap,
......@@ -292,10 +293,12 @@ static void cg6_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
unsigned long flags;
s32 val;
/* XXX doesn't handle ROP_XOR */
/* CG6 doesn't handle ROP_XOR */
spin_lock_irqsave(&par->lock, flags);
cg6_sync(info);
sbus_writel(rect->color, &fbc->fg);
sbus_writel(~(u32)0, &fbc->pixelm);
sbus_writel(0xea80ff00, &fbc->alu);
......@@ -312,6 +315,48 @@ static void cg6_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
spin_unlock_irqrestore(&par->lock, flags);
}
/**
* cg6_copyarea - Copies one area of the screen to another area.
*
* @info: frame buffer structure that represents a single frame buffer
* @area: Structure providing the data to copy the framebuffer contents
* from one region to another.
*
* This drawing operation copies a rectangular area from one area of the
* screen to another area.
*/
static void cg6_copyarea(struct fb_info *info, const struct fb_copyarea *area)
{
struct cg6_par *par = (struct cg6_par *)info->par;
struct cg6_fbc __iomem *fbc = par->fbc;
unsigned long flags;
int i;
spin_lock_irqsave(&par->lock, flags);
cg6_sync(info);
sbus_writel(0xff, &fbc->fg);
sbus_writel(0x00, &fbc->bg);
sbus_writel(~0, &fbc->pixelm);
sbus_writel(0xe880cccc, &fbc->alu);
sbus_writel(0, &fbc->s);
sbus_writel(0, &fbc->clip);
sbus_writel(area->sy, &fbc->y0);
sbus_writel(area->sx, &fbc->x0);
sbus_writel(area->sy + area->height - 1, &fbc->y1);
sbus_writel(area->sx + area->width - 1, &fbc->x1);
sbus_writel(area->dy, &fbc->y2);
sbus_writel(area->dx, &fbc->x2);
sbus_writel(area->dy + area->height - 1, &fbc->y3);
sbus_writel(area->dx + area->width - 1, &fbc->x3);
do {
i = sbus_readl(&fbc->blit);
} while (i < 0 && (i & 0x20000000));
spin_unlock_irqrestore(&par->lock, flags);
}
/**
* cg6_imageblit - Copies a image from system memory to the screen.
*
......@@ -708,7 +753,8 @@ static int __devinit cg6_probe(struct of_device *op,
sizeof(u32), "cgsix fhc");
info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_IMAGEBLIT |
FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT;
FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
FBINFO_READS_FAST;
info->fbops = &cg6_ops;
info->screen_base = of_ioremap(&op->resource[0], CG6_RAM_OFFSET,
......
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