[VIDEO]: Add Sun XVR-2500 framebuffer driver.

Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/video/Kconfig

@@ -1396,6 +1396,19 @@ config FB_XVR500
 	  mostly initialized the card already.  It is treated as a
 	  completely dumb framebuffer device.
 
+config FB_XVR2500
+	bool "Sun XVR-2500 3DLABS Wildcat support"
+	depends on FB && PCI && SPARC64
+	select FB_CFB_FILLRECT
+	select FB_CFB_COPYAREA
+	select FB_CFB_IMAGEBLIT
+	help
+	  This is the framebuffer device for the Sun XVR-2500 and similar
+	  graphics cards based upon the 3DLABS Wildcat chipset.  The driver
+	  only works on sparc64 systems where the system firwmare has
+	  mostly initialized the card already.  It is treated as a
+	  completely dumb framebuffer device.
+
 config FB_PCI
 	bool "PCI framebuffers"
 	depends on (FB = y) && PCI && SPARC

drivers/video/Makefile

@@ -68,6 +68,7 @@ obj-$(CONFIG_FB_ATARI)            += atafb.o c2p.o atafb_mfb.o \
 obj-$(CONFIG_FB_MAC)              += macfb.o
 obj-$(CONFIG_FB_HGA)              += hgafb.o
 obj-$(CONFIG_FB_XVR500)           += sunxvr500.o
+obj-$(CONFIG_FB_XVR2500)          += sunxvr2500.o
 obj-$(CONFIG_FB_IGA)              += igafb.o
 obj-$(CONFIG_FB_APOLLO)           += dnfb.o
 obj-$(CONFIG_FB_Q40)              += q40fb.o

drivers/video/sunxvr2500.c

@@ -0,0 +1,277 @@
+/* s3d.c: Sun 3DLABS XVR-2500 et al. driver for sparc64 systems
+ *
+ * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/fb.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+
+#include <asm/io.h>
+#include <asm/prom.h>
+#include <asm/of_device.h>
+
+struct s3d_info {
+	struct fb_info		*info;
+	struct pci_dev		*pdev;
+
+	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[256];
+};
+
+static int __devinit s3d_get_props(struct s3d_info *sp)
+{
+	sp->width = of_getintprop_default(sp->of_node, "width", 0);
+	sp->height = of_getintprop_default(sp->of_node, "height", 0);
+	sp->depth = of_getintprop_default(sp->of_node, "depth", 8);
+
+	if (!sp->width || !sp->height) {
+		printk(KERN_ERR "s3d: Critical properties missing for %s\n",
+		       pci_name(sp->pdev));
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int s3d_setcolreg(unsigned regno,
+			 unsigned red, unsigned green, unsigned blue,
+			 unsigned transp, struct fb_info *info)
+{
+	u32 value;
+
+	if (regno >= 256)
+		return 1;
+
+	red >>= 8;
+	green >>= 8;
+	blue >>= 8;
+
+	value = (blue << 24) | (green << 16) | (red << 8);
+	((u32 *)info->pseudo_palette)[regno] = value;
+
+	return 0;
+}
+
+static struct fb_ops s3d_ops = {
+	.owner			= THIS_MODULE,
+	.fb_setcolreg		= s3d_setcolreg,
+	.fb_fillrect		= cfb_fillrect,
+	.fb_copyarea		= cfb_copyarea,
+	.fb_imageblit		= cfb_imageblit,
+};
+
+static int __devinit s3d_set_fbinfo(struct s3d_info *sp)
+{
+	struct fb_info *info = sp->info;
+	struct fb_var_screeninfo *var = &info->var;
+
+	info->flags = FBINFO_DEFAULT;
+	info->fbops = &s3d_ops;
+	info->screen_base = sp->fb_base;
+	info->screen_size = sp->fb_size;
+
+	info->pseudo_palette = sp->pseudo_palette;
+
+	/* Fill fix common fields */
+	strlcpy(info->fix.id, "s3d", sizeof(info->fix.id));
+        info->fix.smem_start = sp->fb_base_phys;
+        info->fix.smem_len = sp->fb_size;
+        info->fix.type = FB_TYPE_PACKED_PIXELS;
+	if (sp->depth == 32 || sp->depth == 24)
+		info->fix.visual = FB_VISUAL_TRUECOLOR;
+	else
+		info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
+
+	var->xres = sp->width;
+	var->yres = sp->height;
+	var->xres_virtual = var->xres;
+	var->yres_virtual = var->yres;
+	var->bits_per_pixel = sp->depth;
+
+	var->red.offset = 8;
+	var->red.length = 8;
+	var->green.offset = 16;
+	var->green.length = 8;
+	var->blue.offset = 24;
+	var->blue.length = 8;
+	var->transp.offset = 0;
+	var->transp.length = 0;
+
+	if (fb_alloc_cmap(&info->cmap, 256, 0)) {
+		printk(KERN_ERR "s3d: Cannot allocate color map.\n");
+		return -ENOMEM;
+	}
+
+        return 0;
+}
+
+static int __devinit s3d_pci_register(struct pci_dev *pdev,
+				      const struct pci_device_id *ent)
+{
+	struct fb_info *info;
+	struct s3d_info *sp;
+	int err;
+
+	err = pci_enable_device(pdev);
+	if (err < 0) {
+		printk(KERN_ERR "s3d: Cannot enable PCI device %s\n",
+		       pci_name(pdev));
+		goto err_out;
+	}
+
+	info = framebuffer_alloc(sizeof(struct s3d_info), &pdev->dev);
+	if (!info) {
+		printk(KERN_ERR "s3d: Cannot allocate fb_info\n");
+		err = -ENOMEM;
+		goto err_disable;
+	}
+
+	sp = info->par;
+	sp->info = info;
+	sp->pdev = pdev;
+	sp->of_node = pci_device_to_OF_node(pdev);
+	if (!sp->of_node) {
+		printk(KERN_ERR "s3d: Cannot find OF node of %s\n",
+		       pci_name(pdev));
+		err = -ENODEV;
+		goto err_release_fb;
+	}
+
+	sp->fb_base_phys = pci_resource_start (pdev, 1);
+
+	err = pci_request_region(pdev, 1, "s3d framebuffer");
+	if (err < 0) {
+		printk("s3d: Cannot request region 1 for %s\n",
+		       pci_name(pdev));
+		goto err_release_fb;
+	}
+
+	err = s3d_get_props(sp);
+	if (err)
+		goto err_release_pci;
+
+	/* XXX 'linebytes' is often wrong, it is equal to the width
+	 * XXX with depth of 32 on my XVR-2500 which is clearly not
+	 * XXX right.  So we don't try to use it.
+	 */
+	switch (sp->depth) {
+	case 8:
+		info->fix.line_length = sp->width;
+		break;
+	case 16:
+		info->fix.line_length = sp->width * 2;
+		break;
+	case 24:
+		info->fix.line_length = sp->width * 3;
+		break;
+	case 32:
+		info->fix.line_length = sp->width * 4;
+		break;
+	}
+	sp->fb_size = info->fix.line_length * sp->height;
+
+	sp->fb_base = ioremap(sp->fb_base_phys, sp->fb_size);
+	if (!sp->fb_base)
+		goto err_release_pci;
+
+	err = s3d_set_fbinfo(sp);
+	if (err)
+		goto err_unmap_fb;
+
+	pci_set_drvdata(pdev, info);
+
+	printk("s3d: Found device at %s\n", pci_name(pdev));
+
+	err = register_framebuffer(info);
+	if (err < 0) {
+		printk(KERN_ERR "s3d: Could not register framebuffer %s\n",
+		       pci_name(pdev));
+		goto err_unmap_fb;
+	}
+
+	return 0;
+
+err_unmap_fb:
+	iounmap(sp->fb_base);
+
+err_release_pci:
+	pci_release_region(pdev, 1);
+
+err_release_fb:
+        framebuffer_release(info);
+
+err_disable:
+	pci_disable_device(pdev);
+
+err_out:
+	return err;
+}
+
+static void __devexit s3d_pci_unregister(struct pci_dev *pdev)
+{
+	struct fb_info *info = pci_get_drvdata(pdev);
+	struct s3d_info *sp = info->par;
+
+	unregister_framebuffer(info);
+
+	iounmap(sp->fb_base);
+
+	pci_release_region(pdev, 1);
+
+        framebuffer_release(info);
+
+	pci_disable_device(pdev);
+}
+
+static struct pci_device_id s3d_pci_table[] = {
+	{	/* XVR-2500 */
+		PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0032),
+		.driver_data = 1,
+	},
+	{	/* XVR-500 */
+		PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x07a2),
+		.driver_data = 0,
+	},
+	{ 0, }
+};
+
+static struct pci_driver s3d_driver = {
+	.name		= "s3d",
+	.id_table	= s3d_pci_table,
+	.probe		= s3d_pci_register,
+	.remove		= __devexit_p(s3d_pci_unregister),
+};
+
+static int __init s3d_init(void)
+{
+	if (fb_get_options("s3d", NULL))
+		return -ENODEV;
+
+	return pci_register_driver(&s3d_driver);
+}
+
+static void __exit s3d_exit(void)
+{
+	pci_unregister_driver(&s3d_driver);
+}
+
+module_init(s3d_init);
+module_exit(s3d_exit);
+
+MODULE_DESCRIPTION("framebuffer driver for Sun XVR-2500 graphics");
+MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
+MODULE_VERSION("1.0");
+MODULE_LICENSE("GPL");