--- /dev/null
+/* 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");
git.openpandora.org / pandora-kernel.git / commitdiff