drivers/video/sunxvr2500.c

   1 /* s3d.c: Sun 3DLABS XVR-2500 et al. driver for sparc64 systems
   2  *
   3  * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
   4  */
   5
   6 #include <linux/module.h>
   7 #include <linux/kernel.h>
   8 #include <linux/slab.h>
   9 #include <linux/fb.h>
  10 #include <linux/pci.h>
  11 #include <linux/init.h>
  12
  13 #include <asm/io.h>
  14 #include <asm/prom.h>
  15 #include <asm/of_device.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[256];
  32 };
  33
  34 static int __devinit 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 >= 256)
  56                 return 1;
  57
  58         red >>= 8;
  59         green >>= 8;
  60         blue >>= 8;
  61
  62         value = (blue << 24) | (green << 16) | (red << 8);
  63         ((u32 *)info->pseudo_palette)[regno] = value;
  64
  65         return 0;
  66 }
  67
  68 static struct fb_ops s3d_ops = {
  69         .owner                  = THIS_MODULE,
  70         .fb_setcolreg           = s3d_setcolreg,
  71         .fb_fillrect            = cfb_fillrect,
  72         .fb_copyarea            = cfb_copyarea,
  73         .fb_imageblit           = cfb_imageblit,
  74 };
  75
  76 static int __devinit s3d_set_fbinfo(struct s3d_info *sp)
  77 {
  78         struct fb_info *info = sp->info;
  79         struct fb_var_screeninfo *var = &info->var;
  80
  81         info->flags = FBINFO_DEFAULT;
  82         info->fbops = &s3d_ops;
  83         info->screen_base = sp->fb_base;
  84         info->screen_size = sp->fb_size;
  85
  86         info->pseudo_palette = sp->pseudo_palette;
  87
  88         /* Fill fix common fields */
  89         strlcpy(info->fix.id, "s3d", sizeof(info->fix.id));
  90         info->fix.smem_start = sp->fb_base_phys;
  91         info->fix.smem_len = sp->fb_size;
  92         info->fix.type = FB_TYPE_PACKED_PIXELS;
  93         if (sp->depth == 32 || sp->depth == 24)
  94                 info->fix.visual = FB_VISUAL_TRUECOLOR;
  95         else
  96                 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
  97
  98         var->xres = sp->width;
  99         var->yres = sp->height;
 100         var->xres_virtual = var->xres;
 101         var->yres_virtual = var->yres;
 102         var->bits_per_pixel = sp->depth;
 103
 104         var->red.offset = 8;
 105         var->red.length = 8;
 106         var->green.offset = 16;
 107         var->green.length = 8;
 108         var->blue.offset = 24;
 109         var->blue.length = 8;
 110         var->transp.offset = 0;
 111         var->transp.length = 0;
 112
 113         if (fb_alloc_cmap(&info->cmap, 256, 0)) {
 114                 printk(KERN_ERR "s3d: Cannot allocate color map.\n");
 115                 return -ENOMEM;
 116         }
 117
 118         return 0;
 119 }
 120
 121 static int __devinit s3d_pci_register(struct pci_dev *pdev,
 122                                       const struct pci_device_id *ent)
 123 {
 124         struct fb_info *info;
 125         struct s3d_info *sp;
 126         int err;
 127
 128         err = pci_enable_device(pdev);
 129         if (err < 0) {
 130                 printk(KERN_ERR "s3d: Cannot enable PCI device %s\n",
 131                        pci_name(pdev));
 132                 goto err_out;
 133         }
 134
 135         info = framebuffer_alloc(sizeof(struct s3d_info), &pdev->dev);
 136         if (!info) {
 137                 printk(KERN_ERR "s3d: Cannot allocate fb_info\n");
 138                 err = -ENOMEM;
 139                 goto err_disable;
 140         }
 141
 142         sp = info->par;
 143         sp->info = info;
 144         sp->pdev = pdev;
 145         sp->of_node = pci_device_to_OF_node(pdev);
 146         if (!sp->of_node) {
 147                 printk(KERN_ERR "s3d: Cannot find OF node of %s\n",
 148                        pci_name(pdev));
 149                 err = -ENODEV;
 150                 goto err_release_fb;
 151         }
 152
 153         sp->fb_base_phys = pci_resource_start (pdev, 1);
 154
 155         err = pci_request_region(pdev, 1, "s3d framebuffer");
 156         if (err < 0) {
 157                 printk("s3d: Cannot request region 1 for %s\n",
 158                        pci_name(pdev));
 159                 goto err_release_fb;
 160         }
 161
 162         err = s3d_get_props(sp);
 163         if (err)
 164                 goto err_release_pci;
 165
 166         /* XXX 'linebytes' is often wrong, it is equal to the width
 167          * XXX with depth of 32 on my XVR-2500 which is clearly not
 168          * XXX right.  So we don't try to use it.
 169          */
 170         switch (sp->depth) {
 171         case 8:
 172                 info->fix.line_length = sp->width;
 173                 break;
 174         case 16:
 175                 info->fix.line_length = sp->width * 2;
 176                 break;
 177         case 24:
 178                 info->fix.line_length = sp->width * 3;
 179                 break;
 180         case 32:
 181                 info->fix.line_length = sp->width * 4;
 182                 break;
 183         }
 184         sp->fb_size = info->fix.line_length * sp->height;
 185
 186         sp->fb_base = ioremap(sp->fb_base_phys, sp->fb_size);
 187         if (!sp->fb_base)
 188                 goto err_release_pci;
 189
 190         err = s3d_set_fbinfo(sp);
 191         if (err)
 192                 goto err_unmap_fb;
 193
 194         pci_set_drvdata(pdev, info);
 195
 196         printk("s3d: Found device at %s\n", pci_name(pdev));
 197
 198         err = register_framebuffer(info);
 199         if (err < 0) {
 200                 printk(KERN_ERR "s3d: Could not register framebuffer %s\n",
 201                        pci_name(pdev));
 202                 goto err_unmap_fb;
 203         }
 204
 205         return 0;
 206
 207 err_unmap_fb:
 208         iounmap(sp->fb_base);
 209
 210 err_release_pci:
 211         pci_release_region(pdev, 1);
 212
 213 err_release_fb:
 214         framebuffer_release(info);
 215
 216 err_disable:
 217         pci_disable_device(pdev);
 218
 219 err_out:
 220         return err;
 221 }
 222
 223 static void __devexit s3d_pci_unregister(struct pci_dev *pdev)
 224 {
 225         struct fb_info *info = pci_get_drvdata(pdev);
 226         struct s3d_info *sp = info->par;
 227
 228         unregister_framebuffer(info);
 229
 230         iounmap(sp->fb_base);
 231
 232         pci_release_region(pdev, 1);
 233
 234         framebuffer_release(info);
 235
 236         pci_disable_device(pdev);
 237 }
 238
 239 static struct pci_device_id s3d_pci_table[] = {
 240         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002c),       },
 241         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002d),       },
 242         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002e),       },
 243         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002f),       },
 244         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0030),       },
 245         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0031),       },
 246         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0032),       },
 247         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0033),       },
 248         { 0, }
 249 };
 250
 251 static struct pci_driver s3d_driver = {
 252         .name           = "s3d",
 253         .id_table       = s3d_pci_table,
 254         .probe          = s3d_pci_register,
 255         .remove         = __devexit_p(s3d_pci_unregister),
 256 };
 257
 258 static int __init s3d_init(void)
 259 {
 260         if (fb_get_options("s3d", NULL))
 261                 return -ENODEV;
 262
 263         return pci_register_driver(&s3d_driver);
 264 }
 265
 266 static void __exit s3d_exit(void)
 267 {
 268         pci_unregister_driver(&s3d_driver);
 269 }
 270
 271 module_init(s3d_init);
 272 module_exit(s3d_exit);
 273
 274 MODULE_DESCRIPTION("framebuffer driver for Sun XVR-2500 graphics");
 275 MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
 276 MODULE_VERSION("1.0");
 277 MODULE_LICENSE("GPL");