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