sparc64: Add very basic XVR-1000 framebuffer driver.

Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Frans van Berckel <fberckel@xs4all.nl>

diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 5a5c303a6373501a4de9fcd8a0ad475bc081f539..a5755b88de2aca3cddc5a7806f51ffa95f72575e 100644 (file)
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -909,6 +909,18 @@ config FB_XVR2500
          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

diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index 4ecb30c4f3f25fa83be323f6206cb12e48ec525b..8c9a35778c930ccc822471a5226bfa93ad07e443 100644 (file)
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -79,6 +79,7 @@ obj-$(CONFIG_FB_N411)             += n411.o
 obj-$(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

diff --git a/drivers/video/sunxvr1000.c b/drivers/video/sunxvr1000.c
new file mode 100644 (file)
index 0000000..a8248c0
--- /dev/null
+++ b/drivers/video/sunxvr1000.c
@@ -0,0 +1,228 @@
+/* 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");