drivers/video/fbdev/sunxvr2500.c

   1 /* sunxvr2500.c: Sun 3DLABS XVR-2500 et al. fb driver for sparc64 systems
   2  *
   3  * License: GPL
   4  *
   5  * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
   6  */
   7
   8 #include <linux/aperture.h>
   9 #include <linux/kernel.h>
  10 #include <linux/fb.h>
  11 #include <linux/pci.h>
  12 #include <linux/init.h>
  13 #include <linux/of_device.h>
  14
  15 #include <asm/io.h>
  16
  17 struct s3d_info {
  18         struct fb_info          *info;
  19         struct pci_dev          *pdev;
  20
  21         char __iomem            *fb_base;
  22         unsigned long           fb_base_phys;
  23
  24         struct device_node      *of_node;
  25
  26         unsigned int            width;
  27         unsigned int            height;
  28         unsigned int            depth;
  29         unsigned int            fb_size;
  30
  31         u32                     pseudo_palette[16];
  32 };
  33
  34 static int s3d_get_props(struct s3d_info *sp)
  35 {
  36         sp->width = of_getintprop_default(sp->of_node, "width", 0);
  37         sp->height = of_getintprop_default(sp->of_node, "height", 0);
  38         sp->depth = of_getintprop_default(sp->of_node, "depth", 8);
  39
  40         if (!sp->width || !sp->height) {
  41                 printk(KERN_ERR "s3d: Critical properties missing for %s\n",
  42                        pci_name(sp->pdev));
  43                 return -EINVAL;
  44         }
  45
  46         return 0;
  47 }
  48
  49 static int s3d_setcolreg(unsigned regno,
  50                          unsigned red, unsigned green, unsigned blue,
  51                          unsigned transp, struct fb_info *info)
  52 {
  53         u32 value;
  54
  55         if (regno < 16) {
  56                 red >>= 8;
  57                 green >>= 8;
  58                 blue >>= 8;
  59
  60                 value = (blue << 24) | (green << 16) | (red << 8);
  61                 ((u32 *)info->pseudo_palette)[regno] = value;
  62         }
  63
  64         return 0;
  65 }
  66
  67 static const struct fb_ops s3d_ops = {
  68         .owner                  = THIS_MODULE,
  69         .fb_setcolreg           = s3d_setcolreg,
  70         .fb_fillrect            = cfb_fillrect,
  71         .fb_copyarea            = cfb_copyarea,
  72         .fb_imageblit           = cfb_imageblit,
  73 };
  74
  75 static int s3d_set_fbinfo(struct s3d_info *sp)
  76 {
  77         struct fb_info *info = sp->info;
  78         struct fb_var_screeninfo *var = &info->var;
  79
  80         info->flags = FBINFO_DEFAULT;
  81         info->fbops = &s3d_ops;
  82         info->screen_base = sp->fb_base;
  83         info->screen_size = sp->fb_size;
  84
  85         info->pseudo_palette = sp->pseudo_palette;
  86
  87         /* Fill fix common fields */
  88         strscpy(info->fix.id, "s3d", sizeof(info->fix.id));
  89         info->fix.smem_start = sp->fb_base_phys;
  90         info->fix.smem_len = sp->fb_size;
  91         info->fix.type = FB_TYPE_PACKED_PIXELS;
  92         if (sp->depth == 32 || sp->depth == 24)
  93                 info->fix.visual = FB_VISUAL_TRUECOLOR;
  94         else
  95                 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
  96
  97         var->xres = sp->width;
  98         var->yres = sp->height;
  99         var->xres_virtual = var->xres;
 100         var->yres_virtual = var->yres;
 101         var->bits_per_pixel = sp->depth;
 102
 103         var->red.offset = 8;
 104         var->red.length = 8;
 105         var->green.offset = 16;
 106         var->green.length = 8;
 107         var->blue.offset = 24;
 108         var->blue.length = 8;
 109         var->transp.offset = 0;
 110         var->transp.length = 0;
 111
 112         if (fb_alloc_cmap(&info->cmap, 256, 0)) {
 113                 printk(KERN_ERR "s3d: Cannot allocate color map.\n");
 114                 return -ENOMEM;
 115         }
 116
 117         return 0;
 118 }
 119
 120 static int s3d_pci_register(struct pci_dev *pdev,
 121                             const struct pci_device_id *ent)
 122 {
 123         struct fb_info *info;
 124         struct s3d_info *sp;
 125         int err;
 126
 127         err = aperture_remove_conflicting_pci_devices(pdev, "s3dfb");
 128         if (err)
 129                 return err;
 130
 131         err = pci_enable_device(pdev);
 132         if (err < 0) {
 133                 printk(KERN_ERR "s3d: Cannot enable PCI device %s\n",
 134                        pci_name(pdev));
 135                 goto err_out;
 136         }
 137
 138         info = framebuffer_alloc(sizeof(struct s3d_info), &pdev->dev);
 139         if (!info) {
 140                 err = -ENOMEM;
 141                 goto err_disable;
 142         }
 143
 144         sp = info->par;
 145         sp->info = info;
 146         sp->pdev = pdev;
 147         sp->of_node = pci_device_to_OF_node(pdev);
 148         if (!sp->of_node) {
 149                 printk(KERN_ERR "s3d: Cannot find OF node of %s\n",
 150                        pci_name(pdev));
 151                 err = -ENODEV;
 152                 goto err_release_fb;
 153         }
 154
 155         sp->fb_base_phys = pci_resource_start (pdev, 1);
 156
 157         err = pci_request_region(pdev, 1, "s3d framebuffer");
 158         if (err < 0) {
 159                 printk("s3d: Cannot request region 1 for %s\n",
 160                        pci_name(pdev));
 161                 goto err_release_fb;
 162         }
 163
 164         err = s3d_get_props(sp);
 165         if (err)
 166                 goto err_release_pci;
 167
 168         /* XXX 'linebytes' is often wrong, it is equal to the width
 169          * XXX with depth of 32 on my XVR-2500 which is clearly not
 170          * XXX right.  So we don't try to use it.
 171          */
 172         switch (sp->depth) {
 173         case 8:
 174                 info->fix.line_length = sp->width;
 175                 break;
 176         case 16:
 177                 info->fix.line_length = sp->width * 2;
 178                 break;
 179         case 24:
 180                 info->fix.line_length = sp->width * 3;
 181                 break;
 182         case 32:
 183                 info->fix.line_length = sp->width * 4;
 184                 break;
 185         }
 186         sp->fb_size = info->fix.line_length * sp->height;
 187
 188         sp->fb_base = ioremap(sp->fb_base_phys, sp->fb_size);
 189         if (!sp->fb_base) {
 190                 err = -ENOMEM;
 191                 goto err_release_pci;
 192         }
 193
 194         err = s3d_set_fbinfo(sp);
 195         if (err)
 196                 goto err_unmap_fb;
 197
 198         pci_set_drvdata(pdev, info);
 199
 200         printk("s3d: Found device at %s\n", pci_name(pdev));
 201
 202         err = register_framebuffer(info);
 203         if (err < 0) {
 204                 printk(KERN_ERR "s3d: Could not register framebuffer %s\n",
 205                        pci_name(pdev));
 206                 goto err_unmap_fb;
 207         }
 208
 209         return 0;
 210
 211 err_unmap_fb:
 212         iounmap(sp->fb_base);
 213
 214 err_release_pci:
 215         pci_release_region(pdev, 1);
 216
 217 err_release_fb:
 218         framebuffer_release(info);
 219
 220 err_disable:
 221         pci_disable_device(pdev);
 222
 223 err_out:
 224         return err;
 225 }
 226
 227 static const struct pci_device_id s3d_pci_table[] = {
 228         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002c),       },
 229         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002d),       },
 230         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002e),       },
 231         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002f),       },
 232         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0030),       },
 233         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0031),       },
 234         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0032),       },
 235         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0033),       },
 236         { 0, }
 237 };
 238
 239 static struct pci_driver s3d_driver = {
 240         .driver = {
 241                 .suppress_bind_attrs = true,
 242         },
 243         .name           = "s3d",
 244         .id_table       = s3d_pci_table,
 245         .probe          = s3d_pci_register,
 246 };
 247
 248 static int __init s3d_init(void)
 249 {
 250         if (fb_get_options("s3d", NULL))
 251                 return -ENODEV;
 252
 253         return pci_register_driver(&s3d_driver);
 254 }
 255 device_initcall(s3d_init);