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1/* sunxvr2500.c: Sun 3DLABS XVR-2500 et al. fb driver for sparc64 systems2 *3 * License: GPL4 *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.h>14 15#include <asm/io.h>16 17struct 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 34static 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 49static 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 67static const struct fb_ops s3d_ops = {68 .owner = THIS_MODULE,69 FB_DEFAULT_IOMEM_OPS,70 .fb_setcolreg = s3d_setcolreg,71};72 73static int 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->fbops = &s3d_ops;79 info->screen_base = sp->fb_base;80 info->screen_size = sp->fb_size;81 82 info->pseudo_palette = sp->pseudo_palette;83 84 /* Fill fix common fields */85 strscpy(info->fix.id, "s3d", sizeof(info->fix.id));86 info->fix.smem_start = sp->fb_base_phys;87 info->fix.smem_len = sp->fb_size;88 info->fix.type = FB_TYPE_PACKED_PIXELS;89 if (sp->depth == 32 || sp->depth == 24)90 info->fix.visual = FB_VISUAL_TRUECOLOR;91 else92 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;93 94 var->xres = sp->width;95 var->yres = sp->height;96 var->xres_virtual = var->xres;97 var->yres_virtual = var->yres;98 var->bits_per_pixel = sp->depth;99 100 var->red.offset = 8;101 var->red.length = 8;102 var->green.offset = 16;103 var->green.length = 8;104 var->blue.offset = 24;105 var->blue.length = 8;106 var->transp.offset = 0;107 var->transp.length = 0;108 109 if (fb_alloc_cmap(&info->cmap, 256, 0)) {110 printk(KERN_ERR "s3d: Cannot allocate color map.\n");111 return -ENOMEM;112 }113 114 return 0;115}116 117static int s3d_pci_register(struct pci_dev *pdev,118 const struct pci_device_id *ent)119{120 struct fb_info *info;121 struct s3d_info *sp;122 int err;123 124 err = aperture_remove_conflicting_pci_devices(pdev, "s3dfb");125 if (err)126 return 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 err = -ENOMEM;138 goto err_disable;139 }140 141 sp = info->par;142 sp->info = info;143 sp->pdev = pdev;144 sp->of_node = pci_device_to_OF_node(pdev);145 if (!sp->of_node) {146 printk(KERN_ERR "s3d: Cannot find OF node of %s\n",147 pci_name(pdev));148 err = -ENODEV;149 goto err_release_fb;150 }151 152 sp->fb_base_phys = pci_resource_start (pdev, 1);153 154 err = pci_request_region(pdev, 1, "s3d framebuffer");155 if (err < 0) {156 printk("s3d: Cannot request region 1 for %s\n",157 pci_name(pdev));158 goto err_release_fb;159 }160 161 err = s3d_get_props(sp);162 if (err)163 goto err_release_pci;164 165 /* XXX 'linebytes' is often wrong, it is equal to the width166 * XXX with depth of 32 on my XVR-2500 which is clearly not167 * XXX right. So we don't try to use it.168 */169 switch (sp->depth) {170 case 8:171 info->fix.line_length = sp->width;172 break;173 case 16:174 info->fix.line_length = sp->width * 2;175 break;176 case 24:177 info->fix.line_length = sp->width * 3;178 break;179 case 32:180 info->fix.line_length = sp->width * 4;181 break;182 }183 sp->fb_size = info->fix.line_length * sp->height;184 185 sp->fb_base = ioremap(sp->fb_base_phys, sp->fb_size);186 if (!sp->fb_base) {187 err = -ENOMEM;188 goto err_release_pci;189 }190 191 err = s3d_set_fbinfo(sp);192 if (err)193 goto err_unmap_fb;194 195 pci_set_drvdata(pdev, info);196 197 printk("s3d: Found device at %s\n", pci_name(pdev));198 199 err = register_framebuffer(info);200 if (err < 0) {201 printk(KERN_ERR "s3d: Could not register framebuffer %s\n",202 pci_name(pdev));203 goto err_unmap_fb;204 }205 206 return 0;207 208err_unmap_fb:209 iounmap(sp->fb_base);210 211err_release_pci:212 pci_release_region(pdev, 1);213 214err_release_fb:215 framebuffer_release(info);216 217err_disable:218 pci_disable_device(pdev);219 220err_out:221 return err;222}223 224static const struct pci_device_id s3d_pci_table[] = {225 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002c), },226 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002d), },227 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002e), },228 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002f), },229 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0030), },230 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0031), },231 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0032), },232 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0033), },233 { 0, }234};235 236static struct pci_driver s3d_driver = {237 .driver = {238 .suppress_bind_attrs = true,239 },240 .name = "s3d",241 .id_table = s3d_pci_table,242 .probe = s3d_pci_register,243};244 245static int __init s3d_init(void)246{247 if (fb_modesetting_disabled("s3d"))248 return -ENODEV;249 250 if (fb_get_options("s3d", NULL))251 return -ENODEV;252 253 return pci_register_driver(&s3d_driver);254}255device_initcall(s3d_init);256