mirror of https://gitee.com/openkylin/linux.git
183 lines
5.3 KiB
C
183 lines
5.3 KiB
C
/*
|
|
* linux/drivers/video/wmt_ge_rops.c
|
|
*
|
|
* Accelerators for raster operations using WonderMedia Graphics Engine
|
|
*
|
|
* Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
|
|
*
|
|
* This software is licensed under the terms of the GNU General Public
|
|
* License version 2, as published by the Free Software Foundation, and
|
|
* may be copied, distributed, and modified under those terms.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/fb.h>
|
|
#include <linux/platform_device.h>
|
|
#include "fb_draw.h"
|
|
|
|
#define GE_COMMAND_OFF 0x00
|
|
#define GE_DEPTH_OFF 0x04
|
|
#define GE_HIGHCOLOR_OFF 0x08
|
|
#define GE_ROPCODE_OFF 0x14
|
|
#define GE_FIRE_OFF 0x18
|
|
#define GE_SRCBASE_OFF 0x20
|
|
#define GE_SRCDISPW_OFF 0x24
|
|
#define GE_SRCDISPH_OFF 0x28
|
|
#define GE_SRCAREAX_OFF 0x2c
|
|
#define GE_SRCAREAY_OFF 0x30
|
|
#define GE_SRCAREAW_OFF 0x34
|
|
#define GE_SRCAREAH_OFF 0x38
|
|
#define GE_DESTBASE_OFF 0x3c
|
|
#define GE_DESTDISPW_OFF 0x40
|
|
#define GE_DESTDISPH_OFF 0x44
|
|
#define GE_DESTAREAX_OFF 0x48
|
|
#define GE_DESTAREAY_OFF 0x4c
|
|
#define GE_DESTAREAW_OFF 0x50
|
|
#define GE_DESTAREAH_OFF 0x54
|
|
#define GE_PAT0C_OFF 0x88 /* Pattern 0 color */
|
|
#define GE_ENABLE_OFF 0xec
|
|
#define GE_INTEN_OFF 0xf0
|
|
#define GE_STATUS_OFF 0xf8
|
|
|
|
static void __iomem *regbase;
|
|
|
|
void wmt_ge_fillrect(struct fb_info *p, const struct fb_fillrect *rect)
|
|
{
|
|
unsigned long fg, pat;
|
|
|
|
if (p->state != FBINFO_STATE_RUNNING)
|
|
return;
|
|
|
|
if (p->fix.visual == FB_VISUAL_TRUECOLOR ||
|
|
p->fix.visual == FB_VISUAL_DIRECTCOLOR)
|
|
fg = ((u32 *) (p->pseudo_palette))[rect->color];
|
|
else
|
|
fg = rect->color;
|
|
|
|
pat = pixel_to_pat(p->var.bits_per_pixel, fg);
|
|
|
|
if (p->fbops->fb_sync)
|
|
p->fbops->fb_sync(p);
|
|
|
|
writel(p->var.bits_per_pixel == 32 ? 3 :
|
|
(p->var.bits_per_pixel == 8 ? 0 : 1), regbase + GE_DEPTH_OFF);
|
|
writel(p->var.bits_per_pixel == 15 ? 1 : 0, regbase + GE_HIGHCOLOR_OFF);
|
|
writel(p->fix.smem_start, regbase + GE_DESTBASE_OFF);
|
|
writel(p->var.xres_virtual - 1, regbase + GE_DESTDISPW_OFF);
|
|
writel(p->var.yres_virtual - 1, regbase + GE_DESTDISPH_OFF);
|
|
writel(rect->dx, regbase + GE_DESTAREAX_OFF);
|
|
writel(rect->dy, regbase + GE_DESTAREAY_OFF);
|
|
writel(rect->width - 1, regbase + GE_DESTAREAW_OFF);
|
|
writel(rect->height - 1, regbase + GE_DESTAREAH_OFF);
|
|
|
|
writel(pat, regbase + GE_PAT0C_OFF);
|
|
writel(1, regbase + GE_COMMAND_OFF);
|
|
writel(rect->rop == ROP_XOR ? 0x5a : 0xf0, regbase + GE_ROPCODE_OFF);
|
|
writel(1, regbase + GE_FIRE_OFF);
|
|
}
|
|
EXPORT_SYMBOL_GPL(wmt_ge_fillrect);
|
|
|
|
void wmt_ge_copyarea(struct fb_info *p, const struct fb_copyarea *area)
|
|
{
|
|
if (p->state != FBINFO_STATE_RUNNING)
|
|
return;
|
|
|
|
if (p->fbops->fb_sync)
|
|
p->fbops->fb_sync(p);
|
|
|
|
writel(p->var.bits_per_pixel > 16 ? 3 :
|
|
(p->var.bits_per_pixel > 8 ? 1 : 0), regbase + GE_DEPTH_OFF);
|
|
|
|
writel(p->fix.smem_start, regbase + GE_SRCBASE_OFF);
|
|
writel(p->var.xres_virtual - 1, regbase + GE_SRCDISPW_OFF);
|
|
writel(p->var.yres_virtual - 1, regbase + GE_SRCDISPH_OFF);
|
|
writel(area->sx, regbase + GE_SRCAREAX_OFF);
|
|
writel(area->sy, regbase + GE_SRCAREAY_OFF);
|
|
writel(area->width - 1, regbase + GE_SRCAREAW_OFF);
|
|
writel(area->height - 1, regbase + GE_SRCAREAH_OFF);
|
|
|
|
writel(p->fix.smem_start, regbase + GE_DESTBASE_OFF);
|
|
writel(p->var.xres_virtual - 1, regbase + GE_DESTDISPW_OFF);
|
|
writel(p->var.yres_virtual - 1, regbase + GE_DESTDISPH_OFF);
|
|
writel(area->dx, regbase + GE_DESTAREAX_OFF);
|
|
writel(area->dy, regbase + GE_DESTAREAY_OFF);
|
|
writel(area->width - 1, regbase + GE_DESTAREAW_OFF);
|
|
writel(area->height - 1, regbase + GE_DESTAREAH_OFF);
|
|
|
|
writel(0xcc, regbase + GE_ROPCODE_OFF);
|
|
writel(1, regbase + GE_COMMAND_OFF);
|
|
writel(1, regbase + GE_FIRE_OFF);
|
|
}
|
|
EXPORT_SYMBOL_GPL(wmt_ge_copyarea);
|
|
|
|
int wmt_ge_sync(struct fb_info *p)
|
|
{
|
|
int loops = 5000000;
|
|
while ((readl(regbase + GE_STATUS_OFF) & 4) && --loops)
|
|
cpu_relax();
|
|
return loops > 0 ? 0 : -EBUSY;
|
|
}
|
|
EXPORT_SYMBOL_GPL(wmt_ge_sync);
|
|
|
|
static int wmt_ge_rops_probe(struct platform_device *pdev)
|
|
{
|
|
struct resource *res;
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
if (res == NULL) {
|
|
dev_err(&pdev->dev, "no I/O memory resource defined\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Only one ROP engine is presently supported. */
|
|
if (unlikely(regbase)) {
|
|
WARN_ON(1);
|
|
return -EBUSY;
|
|
}
|
|
|
|
regbase = ioremap(res->start, resource_size(res));
|
|
if (regbase == NULL) {
|
|
dev_err(&pdev->dev, "failed to map I/O memory\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
writel(1, regbase + GE_ENABLE_OFF);
|
|
printk(KERN_INFO "Enabled support for WMT GE raster acceleration\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wmt_ge_rops_remove(struct platform_device *pdev)
|
|
{
|
|
iounmap(regbase);
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id wmt_dt_ids[] = {
|
|
{ .compatible = "wm,prizm-ge-rops", },
|
|
{ /* sentinel */ }
|
|
};
|
|
|
|
static struct platform_driver wmt_ge_rops_driver = {
|
|
.probe = wmt_ge_rops_probe,
|
|
.remove = wmt_ge_rops_remove,
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "wmt_ge_rops",
|
|
.of_match_table = wmt_dt_ids,
|
|
},
|
|
};
|
|
|
|
module_platform_driver(wmt_ge_rops_driver);
|
|
|
|
MODULE_AUTHOR("Alexey Charkov <alchark@gmail.com>");
|
|
MODULE_DESCRIPTION("Accelerators for raster operations using "
|
|
"WonderMedia Graphics Engine");
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_DEVICE_TABLE(of, wmt_dt_ids);
|