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 16 struct 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 33 static 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 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 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 74 static 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 } 118 119 static 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; 206 207 err_unmap_fb: 208 iounmap(sp->fb_base); 209 210 err_release_pci: 211 pci_release_region(pdev, 1); 212 213 err_release_fb: 214 framebuffer_release(info); 215 216 err_disable: 217 pci_disable_device(pdev); 218 219 err_out: 220 return err; 221 } 222 223 static const 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 }; 234 235 static 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 }; 243 244 static 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 } 251 device_initcall(s3d_init); 252