linux/drivers/video/sunxvr2500.c
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   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/fb.h>
   9#include <linux/pci.h>
  10#include <linux/init.h>
  11#include <linux/of_device.h>
  12
  13#include <asm/io.h>
  14
  15struct s3d_info {
  16        struct fb_info          *info;
  17        struct pci_dev          *pdev;
  18
  19        char __iomem            *fb_base;
  20        unsigned long           fb_base_phys;
  21
  22        struct device_node      *of_node;
  23
  24        unsigned int            width;
  25        unsigned int            height;
  26        unsigned int            depth;
  27        unsigned int            fb_size;
  28
  29        u32                     pseudo_palette[16];
  30};
  31
  32static int __devinit s3d_get_props(struct s3d_info *sp)
  33{
  34        sp->width = of_getintprop_default(sp->of_node, "width", 0);
  35        sp->height = of_getintprop_default(sp->of_node, "height", 0);
  36        sp->depth = of_getintprop_default(sp->of_node, "depth", 8);
  37
  38        if (!sp->width || !sp->height) {
  39                printk(KERN_ERR "s3d: Critical properties missing for %s\n",
  40                       pci_name(sp->pdev));
  41                return -EINVAL;
  42        }
  43
  44        return 0;
  45}
  46
  47static int s3d_setcolreg(unsigned regno,
  48                         unsigned red, unsigned green, unsigned blue,
  49                         unsigned transp, struct fb_info *info)
  50{
  51        u32 value;
  52
  53        if (regno < 16) {
  54                red >>= 8;
  55                green >>= 8;
  56                blue >>= 8;
  57
  58                value = (blue << 24) | (green << 16) | (red << 8);
  59                ((u32 *)info->pseudo_palette)[regno] = value;
  60        }
  61
  62        return 0;
  63}
  64
  65static struct fb_ops s3d_ops = {
  66        .owner                  = THIS_MODULE,
  67        .fb_setcolreg           = s3d_setcolreg,
  68        .fb_fillrect            = cfb_fillrect,
  69        .fb_copyarea            = cfb_copyarea,
  70        .fb_imageblit           = cfb_imageblit,
  71};
  72
  73static int __devinit s3d_set_fbinfo(struct s3d_info *sp)
  74{
  75        struct fb_info *info = sp->info;
  76        struct fb_var_screeninfo *var = &info->var;
  77
  78        info->flags = FBINFO_DEFAULT;
  79        info->fbops = &s3d_ops;
  80        info->screen_base = sp->fb_base;
  81        info->screen_size = sp->fb_size;
  82
  83        info->pseudo_palette = sp->pseudo_palette;
  84
  85        /* Fill fix common fields */
  86        strlcpy(info->fix.id, "s3d", sizeof(info->fix.id));
  87        info->fix.smem_start = sp->fb_base_phys;
  88        info->fix.smem_len = sp->fb_size;
  89        info->fix.type = FB_TYPE_PACKED_PIXELS;
  90        if (sp->depth == 32 || sp->depth == 24)
  91                info->fix.visual = FB_VISUAL_TRUECOLOR;
  92        else
  93                info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
  94
  95        var->xres = sp->width;
  96        var->yres = sp->height;
  97        var->xres_virtual = var->xres;
  98        var->yres_virtual = var->yres;
  99        var->bits_per_pixel = sp->depth;
 100
 101        var->red.offset = 8;
 102        var->red.length = 8;
 103        var->green.offset = 16;
 104        var->green.length = 8;
 105        var->blue.offset = 24;
 106        var->blue.length = 8;
 107        var->transp.offset = 0;
 108        var->transp.length = 0;
 109
 110        if (fb_alloc_cmap(&info->cmap, 256, 0)) {
 111                printk(KERN_ERR "s3d: Cannot allocate color map.\n");
 112                return -ENOMEM;
 113        }
 114
 115        return 0;
 116}
 117
 118static int __devinit s3d_pci_register(struct pci_dev *pdev,
 119                                      const struct pci_device_id *ent)
 120{
 121        struct fb_info *info;
 122        struct s3d_info *sp;
 123        int err;
 124
 125        err = pci_enable_device(pdev);
 126        if (err < 0) {
 127                printk(KERN_ERR "s3d: Cannot enable PCI device %s\n",
 128                       pci_name(pdev));
 129                goto err_out;
 130        }
 131
 132        info = framebuffer_alloc(sizeof(struct s3d_info), &pdev->dev);
 133        if (!info) {
 134                printk(KERN_ERR "s3d: Cannot allocate fb_info\n");
 135                err = -ENOMEM;
 136                goto err_disable;
 137        }
 138
 139        sp = info->par;
 140        sp->info = info;
 141        sp->pdev = pdev;
 142        sp->of_node = pci_device_to_OF_node(pdev);
 143        if (!sp->of_node) {
 144                printk(KERN_ERR "s3d: Cannot find OF node of %s\n",
 145                       pci_name(pdev));
 146                err = -ENODEV;
 147                goto err_release_fb;
 148        }
 149
 150        sp->fb_base_phys = pci_resource_start (pdev, 1);
 151
 152        err = pci_request_region(pdev, 1, "s3d framebuffer");
 153        if (err < 0) {
 154                printk("s3d: Cannot request region 1 for %s\n",
 155                       pci_name(pdev));
 156                goto err_release_fb;
 157        }
 158
 159        err = s3d_get_props(sp);
 160        if (err)
 161                goto err_release_pci;
 162
 163        /* XXX 'linebytes' is often wrong, it is equal to the width
 164         * XXX with depth of 32 on my XVR-2500 which is clearly not
 165         * XXX right.  So we don't try to use it.
 166         */
 167        switch (sp->depth) {
 168        case 8:
 169                info->fix.line_length = sp->width;
 170                break;
 171        case 16:
 172                info->fix.line_length = sp->width * 2;
 173                break;
 174        case 24:
 175                info->fix.line_length = sp->width * 3;
 176                break;
 177        case 32:
 178                info->fix.line_length = sp->width * 4;
 179                break;
 180        }
 181        sp->fb_size = info->fix.line_length * sp->height;
 182
 183        sp->fb_base = ioremap(sp->fb_base_phys, sp->fb_size);
 184        if (!sp->fb_base) {
 185                err = -ENOMEM;
 186                goto err_release_pci;
 187        }
 188
 189        err = s3d_set_fbinfo(sp);
 190        if (err)
 191                goto err_unmap_fb;
 192
 193        pci_set_drvdata(pdev, info);
 194
 195        printk("s3d: Found device at %s\n", pci_name(pdev));
 196
 197        err = register_framebuffer(info);
 198        if (err < 0) {
 199                printk(KERN_ERR "s3d: Could not register framebuffer %s\n",
 200                       pci_name(pdev));
 201                goto err_unmap_fb;
 202        }
 203
 204        return 0;
 205
 206err_unmap_fb:
 207        iounmap(sp->fb_base);
 208
 209err_release_pci:
 210        pci_release_region(pdev, 1);
 211
 212err_release_fb:
 213        framebuffer_release(info);
 214
 215err_disable:
 216        pci_disable_device(pdev);
 217
 218err_out:
 219        return err;
 220}
 221
 222static void __devexit s3d_pci_unregister(struct pci_dev *pdev)
 223{
 224        struct fb_info *info = pci_get_drvdata(pdev);
 225        struct s3d_info *sp = info->par;
 226
 227        unregister_framebuffer(info);
 228
 229        iounmap(sp->fb_base);
 230
 231        pci_release_region(pdev, 1);
 232
 233        framebuffer_release(info);
 234
 235        pci_disable_device(pdev);
 236}
 237
 238static struct pci_device_id s3d_pci_table[] = {
 239        {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002c),       },
 240        {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002d),       },
 241        {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002e),       },
 242        {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002f),       },
 243        {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0030),       },
 244        {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0031),       },
 245        {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0032),       },
 246        {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0033),       },
 247        { 0, }
 248};
 249
 250static struct pci_driver s3d_driver = {
 251        .name           = "s3d",
 252        .id_table       = s3d_pci_table,
 253        .probe          = s3d_pci_register,
 254        .remove         = __devexit_p(s3d_pci_unregister),
 255};
 256
 257static int __init s3d_init(void)
 258{
 259        if (fb_get_options("s3d", NULL))
 260                return -ENODEV;
 261
 262        return pci_register_driver(&s3d_driver);
 263}
 264
 265static void __exit s3d_exit(void)
 266{
 267        pci_unregister_driver(&s3d_driver);
 268}
 269
 270module_init(s3d_init);
 271module_exit(s3d_exit);
 272
 273MODULE_DESCRIPTION("framebuffer driver for Sun XVR-2500 graphics");
 274MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
 275MODULE_VERSION("1.0");
 276MODULE_LICENSE("GPL");
 277
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