mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
174 lines
4.9 KiB
174 lines
4.9 KiB
// SPDX-License-Identifier: GPL-2.0-only |
|
/* |
|
* linux/drivers/video/wmt_ge_rops.c |
|
* |
|
* Accelerators for raster operations using WonderMedia Graphics Engine |
|
* |
|
* Copyright (C) 2010 Alexey Charkov <[email protected]> |
|
*/ |
|
|
|
#include <linux/module.h> |
|
#include <linux/fb.h> |
|
#include <linux/platform_device.h> |
|
#include "core/fb_draw.h" |
|
#include "wmt_ge_rops.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 = { |
|
.name = "wmt_ge_rops", |
|
.of_match_table = wmt_dt_ids, |
|
}, |
|
}; |
|
|
|
module_platform_driver(wmt_ge_rops_driver); |
|
|
|
MODULE_AUTHOR("Alexey Charkov <[email protected]>"); |
|
MODULE_DESCRIPTION("Accelerators for raster operations using " |
|
"WonderMedia Graphics Engine"); |
|
MODULE_LICENSE("GPL v2"); |
|
MODULE_DEVICE_TABLE(of, wmt_dt_ids);
|
|
|