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 pci_err(sp->pdev, "Critical properties missing\n"); 42 return -EINVAL; 43 } 44 45 return 0; 46 } 47 48 static 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 66 static const struct fb_ops s3d_ops = { 67 .owner = THIS_MODULE, 68 FB_DEFAULT_IOMEM_OPS, 69 .fb_setcolreg = s3d_setcolreg, 70 }; 71 72 static int s3d_set_fbinfo(struct s3d_info *sp) 73 { 74 struct fb_info *info = sp->info; 75 struct fb_var_screeninfo *var = &info->var; 76 77 info->fbops = &s3d_ops; 78 info->screen_base = sp->fb_base; 79 info->screen_size = sp->fb_size; 80 81 info->pseudo_palette = sp->pseudo_palette; 82 83 /* Fill fix common fields */ 84 strscpy(info->fix.id, "s3d", sizeof(info->fix.id)); 85 info->fix.smem_start = sp->fb_base_phys; 86 info->fix.smem_len = sp->fb_size; 87 info->fix.type = FB_TYPE_PACKED_PIXELS; 88 if (sp->depth == 32 || sp->depth == 24) 89 info->fix.visual = FB_VISUAL_TRUECOLOR; 90 else 91 info->fix.visual = FB_VISUAL_PSEUDOCOLOR; 92 93 var->xres = sp->width; 94 var->yres = sp->height; 95 var->xres_virtual = var->xres; 96 var->yres_virtual = var->yres; 97 var->bits_per_pixel = sp->depth; 98 99 var->red.offset = 8; 100 var->red.length = 8; 101 var->green.offset = 16; 102 var->green.length = 8; 103 var->blue.offset = 24; 104 var->blue.length = 8; 105 var->transp.offset = 0; 106 var->transp.length = 0; 107 108 if (fb_alloc_cmap(&info->cmap, 256, 0)) { 109 pci_err(sp->pdev, "Cannot allocate color map\n"); 110 return -ENOMEM; 111 } 112 113 return 0; 114 } 115 116 static int s3d_pci_register(struct pci_dev *pdev, 117 const struct pci_device_id *ent) 118 { 119 struct fb_info *info; 120 struct s3d_info *sp; 121 int err; 122 123 err = aperture_remove_conflicting_pci_devices(pdev, "s3dfb"); 124 if (err) 125 return err; 126 127 err = pci_enable_device(pdev); 128 if (err < 0) { 129 pci_err(pdev, "Cannot enable PCI device\n"); 130 goto err_out; 131 } 132 133 info = framebuffer_alloc(sizeof(struct s3d_info), &pdev->dev); 134 if (!info) { 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 pci_err(pdev, "Cannot find OF node\n"); 145 err = -ENODEV; 146 goto err_release_fb; 147 } 148 149 sp->fb_base_phys = pci_resource_start (pdev, 1); 150 151 err = pci_request_region(pdev, 1, "s3d framebuffer"); 152 if (err < 0) { 153 pci_err(pdev, "Cannot request region 1\n"); 154 goto err_release_fb; 155 } 156 157 err = s3d_get_props(sp); 158 if (err) 159 goto err_release_pci; 160 161 /* XXX 'linebytes' is often wrong, it is equal to the width 162 * XXX with depth of 32 on my XVR-2500 which is clearly not 163 * XXX right. So we don't try to use it. 164 */ 165 switch (sp->depth) { 166 case 8: 167 info->fix.line_length = sp->width; 168 break; 169 case 16: 170 info->fix.line_length = sp->width * 2; 171 break; 172 case 24: 173 info->fix.line_length = sp->width * 3; 174 break; 175 case 32: 176 info->fix.line_length = sp->width * 4; 177 break; 178 } 179 sp->fb_size = info->fix.line_length * sp->height; 180 181 sp->fb_base = ioremap(sp->fb_base_phys, sp->fb_size); 182 if (!sp->fb_base) { 183 err = -ENOMEM; 184 goto err_release_pci; 185 } 186 187 err = s3d_set_fbinfo(sp); 188 if (err) 189 goto err_unmap_fb; 190 191 pci_set_drvdata(pdev, info); 192 193 pci_info(pdev, "Found device\n"); 194 195 err = register_framebuffer(info); 196 if (err < 0) { 197 pci_err(pdev, "Could not register framebuffer\n"); 198 goto err_unmap_fb; 199 } 200 201 return 0; 202 203 err_unmap_fb: 204 iounmap(sp->fb_base); 205 206 err_release_pci: 207 pci_release_region(pdev, 1); 208 209 err_release_fb: 210 framebuffer_release(info); 211 212 err_disable: 213 pci_disable_device(pdev); 214 215 err_out: 216 return err; 217 } 218 219 static const struct pci_device_id s3d_pci_table[] = { 220 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002c), }, 221 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002d), }, 222 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002e), }, 223 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002f), }, 224 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0030), }, 225 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0031), }, 226 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0032), }, 227 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0033), }, 228 { 0, } 229 }; 230 231 static struct pci_driver s3d_driver = { 232 .driver = { 233 .suppress_bind_attrs = true, 234 }, 235 .name = "s3d", 236 .id_table = s3d_pci_table, 237 .probe = s3d_pci_register, 238 }; 239 240 static int __init s3d_init(void) 241 { 242 if (fb_modesetting_disabled("s3d")) 243 return -ENODEV; 244 245 if (fb_get_options("s3d", NULL)) 246 return -ENODEV; 247 248 return pci_register_driver(&s3d_driver); 249 } 250 device_initcall(s3d_init); 251