sparc64: Add very basic XVR-1000 framebuffer driver.

	  mostly initialized the card already.  It is treated as a

	  completely dumb framebuffer device.

config FB_XVR1000

	bool "Sun XVR-1000 support"

	depends on SPARC64

	select FB_CFB_FILLRECT

	select FB_CFB_COPYAREA

	select FB_CFB_IMAGEBLIT

	help

	  This is the framebuffer device for the Sun XVR-1000 and similar

	  graphics cards.  The driver only works on sparc64 systems where

	  the system firmware has mostly initialized the card already.  It

	  is treated as a completely dumb framebuffer device.

config FB_PVR2

	tristate "NEC PowerVR 2 display support"

	depends on FB && SH_DREAMCAST

obj-$(CONFIG_FB_HGA)              += hgafb.o

obj-$(CONFIG_FB_XVR500)           += sunxvr500.o

obj-$(CONFIG_FB_XVR2500)          += sunxvr2500.o

obj-$(CONFIG_FB_XVR1000)          += sunxvr1000.o

obj-$(CONFIG_FB_IGA)              += igafb.o

obj-$(CONFIG_FB_APOLLO)           += dnfb.o

obj-$(CONFIG_FB_Q40)              += q40fb.o

/* sunxvr1000.c: Sun XVR-1000 driver for sparc64 systems

 *

 * Copyright (C) 2010 David S. Miller (davem@davemloft.net)

 */

#include <linux/module.h>

#include <linux/kernel.h>

#include <linux/slab.h>

#include <linux/fb.h>

#include <linux/init.h>

#include <linux/of_device.h>

struct gfb_info {

	struct fb_info		*info;

	char __iomem		*fb_base;

	unsigned long		fb_base_phys;

	struct device_node	*of_node;

	unsigned int		width;

	unsigned int		height;

	unsigned int		depth;

	unsigned int		fb_size;

	u32			pseudo_palette[16];

};

static int __devinit gfb_get_props(struct gfb_info *gp)

{

	gp->width = of_getintprop_default(gp->of_node, "width", 0);

	gp->height = of_getintprop_default(gp->of_node, "height", 0);

	gp->depth = of_getintprop_default(gp->of_node, "depth", 32);

	if (!gp->width || !gp->height) {

		printk(KERN_ERR "gfb: Critical properties missing for %s\n",

		       gp->of_node->full_name);

		return -EINVAL;

	}

	return 0;

}

static int gfb_setcolreg(unsigned regno,

			 unsigned red, unsigned green, unsigned blue,

			 unsigned transp, struct fb_info *info)

{

	u32 value;

	if (regno < 16) {

		red >>= 8;

		green >>= 8;

		blue >>= 8;

		value = (blue << 16) | (green << 8) | red;

		((u32 *)info->pseudo_palette)[regno] = value;

	}

	return 0;

}

static struct fb_ops gfb_ops = {

	.owner			= THIS_MODULE,

	.fb_setcolreg		= gfb_setcolreg,

	.fb_fillrect		= cfb_fillrect,

	.fb_copyarea		= cfb_copyarea,

	.fb_imageblit		= cfb_imageblit,

};

static int __devinit gfb_set_fbinfo(struct gfb_info *gp)

{

	struct fb_info *info = gp->info;

	struct fb_var_screeninfo *var = &info->var;

	info->flags = FBINFO_DEFAULT;

	info->fbops = &gfb_ops;

	info->screen_base = gp->fb_base;

	info->screen_size = gp->fb_size;

	info->pseudo_palette = gp->pseudo_palette;

	/* Fill fix common fields */

	strlcpy(info->fix.id, "gfb", sizeof(info->fix.id));

        info->fix.smem_start = gp->fb_base_phys;

        info->fix.smem_len = gp->fb_size;

        info->fix.type = FB_TYPE_PACKED_PIXELS;

	if (gp->depth == 32 || gp->depth == 24)

		info->fix.visual = FB_VISUAL_TRUECOLOR;

	else

		info->fix.visual = FB_VISUAL_PSEUDOCOLOR;

	var->xres = gp->width;

	var->yres = gp->height;

	var->xres_virtual = var->xres;

	var->yres_virtual = var->yres;

	var->bits_per_pixel = gp->depth;

	var->red.offset = 0;

	var->red.length = 8;

	var->green.offset = 8;

	var->green.length = 8;

	var->blue.offset = 16;

	var->blue.length = 8;

	var->transp.offset = 0;

	var->transp.length = 0;

	if (fb_alloc_cmap(&info->cmap, 256, 0)) {

		printk(KERN_ERR "gfb: Cannot allocate color map.\n");

		return -ENOMEM;

	}

        return 0;

}

static int __devinit gfb_probe(struct of_device *op,

			       const struct of_device_id *match)

{

	struct device_node *dp = op->node;

	struct fb_info *info;

	struct gfb_info *gp;

	int err;

	info = framebuffer_alloc(sizeof(struct gfb_info), &op->dev);

	if (!info) {

		printk(KERN_ERR "gfb: Cannot allocate fb_info\n");

		err = -ENOMEM;

		goto err_out;

	}

	gp = info->par;

	gp->info = info;

	gp->of_node = dp;

	gp->fb_base_phys = op->resource[6].start;

	err = gfb_get_props(gp);

	if (err)

		goto err_release_fb;

	/* Framebuffer length is the same regardless of resolution. */

	info->fix.line_length = 16384;

	gp->fb_size = info->fix.line_length * gp->height;

	gp->fb_base = of_ioremap(&op->resource[6], 0,

				 gp->fb_size, "gfb fb");

	if (!gp->fb_base)

		goto err_release_fb;

	err = gfb_set_fbinfo(gp);

	if (err)

		goto err_unmap_fb;

	printk("gfb: Found device at %s\n", dp->full_name);

	err = register_framebuffer(info);

	if (err < 0) {

		printk(KERN_ERR "gfb: Could not register framebuffer %s\n",

		       dp->full_name);

		goto err_unmap_fb;

	}

	dev_set_drvdata(&op->dev, info);

	return 0;

err_unmap_fb:

	of_iounmap(&op->resource[6], gp->fb_base, gp->fb_size);

err_release_fb:

        framebuffer_release(info);

err_out:

	return err;

}

static int __devexit gfb_remove(struct of_device *op)

{

	struct fb_info *info = dev_get_drvdata(&op->dev);

	struct gfb_info *gp = info->par;

	unregister_framebuffer(info);

	iounmap(gp->fb_base);

	of_iounmap(&op->resource[6], gp->fb_base, gp->fb_size);

        framebuffer_release(info);

	dev_set_drvdata(&op->dev, NULL);

	return 0;

}

static const struct of_device_id gfb_match[] = {

	{

		.name = "SUNW,gfb",

	},

	{},

};

MODULE_DEVICE_TABLE(of, ffb_match);

static struct of_platform_driver gfb_driver = {

	.name		= "gfb",

	.match_table	= gfb_match,

	.probe		= gfb_probe,

	.remove		= __devexit_p(gfb_remove),

};

static int __init gfb_init(void)

{

	if (fb_get_options("gfb", NULL))

		return -ENODEV;

	return of_register_driver(&gfb_driver, &of_bus_type);

}

static void __exit gfb_exit(void)

{

	of_unregister_driver(&gfb_driver);

}

module_init(gfb_init);

module_exit(gfb_exit);

MODULE_DESCRIPTION("framebuffer driver for Sun XVR-1000 graphics");

MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");

MODULE_VERSION("1.0");

MODULE_LICENSE("GPL");