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.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_DEFAULT_IOMEM_OPS, 70 .fb_setcolreg = s3d_setcolreg, 71 }; 72 73 static 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 else 92 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 } 116 117 static 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 width 166 * XXX with depth of 32 on my XVR-2500 which is clearly not 167 * 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; 207 208 err_unmap_fb: 209 iounmap(sp->fb_base); 210 211 err_release_pci: 212 pci_release_region(pdev, 1); 213 214 err_release_fb: 215 framebuffer_release(info); 216 217 err_disable: 218 pci_disable_device(pdev); 219 220 err_out: 221 return err; 222 } 223 224 static 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 }; 235 236 static 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 }; 244 245 static 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 } 255 device_initcall(s3d_init); 256