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_device.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
s3d_get_props(struct s3d_info * sp)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
s3d_setcolreg(unsigned regno,unsigned red,unsigned green,unsigned blue,unsigned transp,struct fb_info * info)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_setcolreg = s3d_setcolreg,
70 .fb_fillrect = cfb_fillrect,
71 .fb_copyarea = cfb_copyarea,
72 .fb_imageblit = cfb_imageblit,
73 };
74
s3d_set_fbinfo(struct s3d_info * sp)75 static int s3d_set_fbinfo(struct s3d_info *sp)
76 {
77 struct fb_info *info = sp->info;
78 struct fb_var_screeninfo *var = &info->var;
79
80 info->flags = FBINFO_DEFAULT;
81 info->fbops = &s3d_ops;
82 info->screen_base = sp->fb_base;
83 info->screen_size = sp->fb_size;
84
85 info->pseudo_palette = sp->pseudo_palette;
86
87 /* Fill fix common fields */
88 strscpy(info->fix.id, "s3d", sizeof(info->fix.id));
89 info->fix.smem_start = sp->fb_base_phys;
90 info->fix.smem_len = sp->fb_size;
91 info->fix.type = FB_TYPE_PACKED_PIXELS;
92 if (sp->depth == 32 || sp->depth == 24)
93 info->fix.visual = FB_VISUAL_TRUECOLOR;
94 else
95 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
96
97 var->xres = sp->width;
98 var->yres = sp->height;
99 var->xres_virtual = var->xres;
100 var->yres_virtual = var->yres;
101 var->bits_per_pixel = sp->depth;
102
103 var->red.offset = 8;
104 var->red.length = 8;
105 var->green.offset = 16;
106 var->green.length = 8;
107 var->blue.offset = 24;
108 var->blue.length = 8;
109 var->transp.offset = 0;
110 var->transp.length = 0;
111
112 if (fb_alloc_cmap(&info->cmap, 256, 0)) {
113 printk(KERN_ERR "s3d: Cannot allocate color map.\n");
114 return -ENOMEM;
115 }
116
117 return 0;
118 }
119
s3d_pci_register(struct pci_dev * pdev,const struct pci_device_id * ent)120 static int s3d_pci_register(struct pci_dev *pdev,
121 const struct pci_device_id *ent)
122 {
123 struct fb_info *info;
124 struct s3d_info *sp;
125 int err;
126
127 err = aperture_remove_conflicting_pci_devices(pdev, "s3dfb");
128 if (err)
129 return err;
130
131 err = pci_enable_device(pdev);
132 if (err < 0) {
133 printk(KERN_ERR "s3d: Cannot enable PCI device %s\n",
134 pci_name(pdev));
135 goto err_out;
136 }
137
138 info = framebuffer_alloc(sizeof(struct s3d_info), &pdev->dev);
139 if (!info) {
140 err = -ENOMEM;
141 goto err_disable;
142 }
143
144 sp = info->par;
145 sp->info = info;
146 sp->pdev = pdev;
147 sp->of_node = pci_device_to_OF_node(pdev);
148 if (!sp->of_node) {
149 printk(KERN_ERR "s3d: Cannot find OF node of %s\n",
150 pci_name(pdev));
151 err = -ENODEV;
152 goto err_release_fb;
153 }
154
155 sp->fb_base_phys = pci_resource_start (pdev, 1);
156
157 err = pci_request_region(pdev, 1, "s3d framebuffer");
158 if (err < 0) {
159 printk("s3d: Cannot request region 1 for %s\n",
160 pci_name(pdev));
161 goto err_release_fb;
162 }
163
164 err = s3d_get_props(sp);
165 if (err)
166 goto err_release_pci;
167
168 /* XXX 'linebytes' is often wrong, it is equal to the width
169 * XXX with depth of 32 on my XVR-2500 which is clearly not
170 * XXX right. So we don't try to use it.
171 */
172 switch (sp->depth) {
173 case 8:
174 info->fix.line_length = sp->width;
175 break;
176 case 16:
177 info->fix.line_length = sp->width * 2;
178 break;
179 case 24:
180 info->fix.line_length = sp->width * 3;
181 break;
182 case 32:
183 info->fix.line_length = sp->width * 4;
184 break;
185 }
186 sp->fb_size = info->fix.line_length * sp->height;
187
188 sp->fb_base = ioremap(sp->fb_base_phys, sp->fb_size);
189 if (!sp->fb_base) {
190 err = -ENOMEM;
191 goto err_release_pci;
192 }
193
194 err = s3d_set_fbinfo(sp);
195 if (err)
196 goto err_unmap_fb;
197
198 pci_set_drvdata(pdev, info);
199
200 printk("s3d: Found device at %s\n", pci_name(pdev));
201
202 err = register_framebuffer(info);
203 if (err < 0) {
204 printk(KERN_ERR "s3d: Could not register framebuffer %s\n",
205 pci_name(pdev));
206 goto err_unmap_fb;
207 }
208
209 return 0;
210
211 err_unmap_fb:
212 iounmap(sp->fb_base);
213
214 err_release_pci:
215 pci_release_region(pdev, 1);
216
217 err_release_fb:
218 framebuffer_release(info);
219
220 err_disable:
221 pci_disable_device(pdev);
222
223 err_out:
224 return err;
225 }
226
227 static const struct pci_device_id s3d_pci_table[] = {
228 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002c), },
229 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002d), },
230 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002e), },
231 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002f), },
232 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0030), },
233 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0031), },
234 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0032), },
235 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0033), },
236 { 0, }
237 };
238
239 static struct pci_driver s3d_driver = {
240 .driver = {
241 .suppress_bind_attrs = true,
242 },
243 .name = "s3d",
244 .id_table = s3d_pci_table,
245 .probe = s3d_pci_register,
246 };
247
s3d_init(void)248 static int __init s3d_init(void)
249 {
250 if (fb_modesetting_disabled("s3d"))
251 return -ENODEV;
252
253 if (fb_get_options("s3d", NULL))
254 return -ENODEV;
255
256 return pci_register_driver(&s3d_driver);
257 }
258 device_initcall(s3d_init);
259