Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 181 insertions, 0 deletions

diff --git a/drivers/video/fbdev/wmt_ge_rops.c b/drivers/video/fbdev/wmt_ge_rops.c
new file mode 100644
index 000000000..89d23844c
--- /dev/null
+++ b/drivers/video/fbdev/wmt_ge_rops.c
@@ -0,0 +1,181 @@
+/*
+ *  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 "core/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		= {
+		.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);