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250 lines
5.4 KiB
250 lines
5.4 KiB
/* sunxvr2500.c: Sun 3DLABS XVR-2500 et al. fb driver for sparc64 systems |
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* |
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* License: GPL |
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* |
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* Copyright (C) 2007 David S. Miller ([email protected]) |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/fb.h> |
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#include <linux/pci.h> |
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#include <linux/init.h> |
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#include <linux/of_device.h> |
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#include <asm/io.h> |
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struct s3d_info { |
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struct fb_info *info; |
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struct pci_dev *pdev; |
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char __iomem *fb_base; |
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unsigned long fb_base_phys; |
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struct device_node *of_node; |
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unsigned int width; |
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unsigned int height; |
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unsigned int depth; |
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unsigned int fb_size; |
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u32 pseudo_palette[16]; |
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}; |
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static int s3d_get_props(struct s3d_info *sp) |
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{ |
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sp->width = of_getintprop_default(sp->of_node, "width", 0); |
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sp->height = of_getintprop_default(sp->of_node, "height", 0); |
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sp->depth = of_getintprop_default(sp->of_node, "depth", 8); |
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if (!sp->width || !sp->height) { |
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printk(KERN_ERR "s3d: Critical properties missing for %s\n", |
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pci_name(sp->pdev)); |
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return -EINVAL; |
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} |
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return 0; |
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} |
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static int s3d_setcolreg(unsigned regno, |
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unsigned red, unsigned green, unsigned blue, |
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unsigned transp, struct fb_info *info) |
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{ |
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u32 value; |
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if (regno < 16) { |
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red >>= 8; |
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green >>= 8; |
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blue >>= 8; |
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value = (blue << 24) | (green << 16) | (red << 8); |
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((u32 *)info->pseudo_palette)[regno] = value; |
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} |
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return 0; |
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} |
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static const struct fb_ops s3d_ops = { |
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.owner = THIS_MODULE, |
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.fb_setcolreg = s3d_setcolreg, |
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.fb_fillrect = cfb_fillrect, |
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.fb_copyarea = cfb_copyarea, |
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.fb_imageblit = cfb_imageblit, |
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}; |
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static int s3d_set_fbinfo(struct s3d_info *sp) |
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{ |
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struct fb_info *info = sp->info; |
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struct fb_var_screeninfo *var = &info->var; |
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info->flags = FBINFO_DEFAULT; |
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info->fbops = &s3d_ops; |
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info->screen_base = sp->fb_base; |
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info->screen_size = sp->fb_size; |
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info->pseudo_palette = sp->pseudo_palette; |
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/* Fill fix common fields */ |
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strlcpy(info->fix.id, "s3d", sizeof(info->fix.id)); |
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info->fix.smem_start = sp->fb_base_phys; |
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info->fix.smem_len = sp->fb_size; |
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info->fix.type = FB_TYPE_PACKED_PIXELS; |
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if (sp->depth == 32 || sp->depth == 24) |
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info->fix.visual = FB_VISUAL_TRUECOLOR; |
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else |
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info->fix.visual = FB_VISUAL_PSEUDOCOLOR; |
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var->xres = sp->width; |
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var->yres = sp->height; |
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var->xres_virtual = var->xres; |
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var->yres_virtual = var->yres; |
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var->bits_per_pixel = sp->depth; |
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var->red.offset = 8; |
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var->red.length = 8; |
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var->green.offset = 16; |
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var->green.length = 8; |
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var->blue.offset = 24; |
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var->blue.length = 8; |
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var->transp.offset = 0; |
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var->transp.length = 0; |
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if (fb_alloc_cmap(&info->cmap, 256, 0)) { |
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printk(KERN_ERR "s3d: Cannot allocate color map.\n"); |
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return -ENOMEM; |
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} |
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return 0; |
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} |
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static int s3d_pci_register(struct pci_dev *pdev, |
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const struct pci_device_id *ent) |
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{ |
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struct fb_info *info; |
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struct s3d_info *sp; |
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int err; |
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err = pci_enable_device(pdev); |
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if (err < 0) { |
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printk(KERN_ERR "s3d: Cannot enable PCI device %s\n", |
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pci_name(pdev)); |
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goto err_out; |
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} |
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info = framebuffer_alloc(sizeof(struct s3d_info), &pdev->dev); |
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if (!info) { |
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err = -ENOMEM; |
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goto err_disable; |
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} |
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sp = info->par; |
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sp->info = info; |
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sp->pdev = pdev; |
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sp->of_node = pci_device_to_OF_node(pdev); |
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if (!sp->of_node) { |
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printk(KERN_ERR "s3d: Cannot find OF node of %s\n", |
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pci_name(pdev)); |
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err = -ENODEV; |
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goto err_release_fb; |
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} |
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sp->fb_base_phys = pci_resource_start (pdev, 1); |
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err = pci_request_region(pdev, 1, "s3d framebuffer"); |
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if (err < 0) { |
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printk("s3d: Cannot request region 1 for %s\n", |
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pci_name(pdev)); |
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goto err_release_fb; |
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} |
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err = s3d_get_props(sp); |
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if (err) |
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goto err_release_pci; |
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/* XXX 'linebytes' is often wrong, it is equal to the width |
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* XXX with depth of 32 on my XVR-2500 which is clearly not |
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* XXX right. So we don't try to use it. |
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*/ |
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switch (sp->depth) { |
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case 8: |
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info->fix.line_length = sp->width; |
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break; |
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case 16: |
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info->fix.line_length = sp->width * 2; |
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break; |
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case 24: |
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info->fix.line_length = sp->width * 3; |
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break; |
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case 32: |
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info->fix.line_length = sp->width * 4; |
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break; |
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} |
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sp->fb_size = info->fix.line_length * sp->height; |
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sp->fb_base = ioremap(sp->fb_base_phys, sp->fb_size); |
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if (!sp->fb_base) { |
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err = -ENOMEM; |
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goto err_release_pci; |
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} |
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err = s3d_set_fbinfo(sp); |
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if (err) |
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goto err_unmap_fb; |
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pci_set_drvdata(pdev, info); |
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printk("s3d: Found device at %s\n", pci_name(pdev)); |
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err = register_framebuffer(info); |
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if (err < 0) { |
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printk(KERN_ERR "s3d: Could not register framebuffer %s\n", |
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pci_name(pdev)); |
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goto err_unmap_fb; |
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} |
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return 0; |
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err_unmap_fb: |
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iounmap(sp->fb_base); |
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err_release_pci: |
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pci_release_region(pdev, 1); |
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err_release_fb: |
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framebuffer_release(info); |
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err_disable: |
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pci_disable_device(pdev); |
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err_out: |
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return err; |
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} |
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static const struct pci_device_id s3d_pci_table[] = { |
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{ PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002c), }, |
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{ PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002d), }, |
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{ PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002e), }, |
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{ PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002f), }, |
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{ PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0030), }, |
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{ PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0031), }, |
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{ PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0032), }, |
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{ PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0033), }, |
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{ 0, } |
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}; |
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static struct pci_driver s3d_driver = { |
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.driver = { |
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.suppress_bind_attrs = true, |
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}, |
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.name = "s3d", |
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.id_table = s3d_pci_table, |
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.probe = s3d_pci_register, |
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}; |
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static int __init s3d_init(void) |
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{ |
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if (fb_get_options("s3d", NULL)) |
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return -ENODEV; |
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return pci_register_driver(&s3d_driver); |
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} |
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device_initcall(s3d_init);
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