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

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

3 files changed, 291 insertions, 0 deletions

diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 0a614beb5fb..344c3759530 100644
--- a/drivers/video/Kconfig
+++ b/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
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index a56be581296..558473d040d 100644
--- a/drivers/video/Makefile
+++ b/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
diff --git a/drivers/video/sunxvr2500.c b/drivers/video/sunxvr2500.c
new file mode 100644
index 00000000000..4010492c692
--- /dev/null
+++ b/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");