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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
16struct 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
33static 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
48static 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
66static const 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
74static 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
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
119static 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 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 printk(KERN_ERR "s3d: Cannot find OF node of %s\n",
145 pci_name(pdev));
146 err = -ENODEV;
147 goto err_release_fb;
148 }
149
150 sp->fb_base_phys = pci_resource_start (pdev, 1);
151
152 err = pci_request_region(pdev, 1, "s3d framebuffer");
153 if (err < 0) {
154 printk("s3d: Cannot request region 1 for %s\n",
155 pci_name(pdev));
156 goto err_release_fb;
157 }
158
159 err = s3d_get_props(sp);
160 if (err)
161 goto err_release_pci;
162
163
164
165
166
167 switch (sp->depth) {
168 case 8:
169 info->fix.line_length = sp->width;
170 break;
171 case 16:
172 info->fix.line_length = sp->width * 2;
173 break;
174 case 24:
175 info->fix.line_length = sp->width * 3;
176 break;
177 case 32:
178 info->fix.line_length = sp->width * 4;
179 break;
180 }
181 sp->fb_size = info->fix.line_length * sp->height;
182
183 sp->fb_base = ioremap(sp->fb_base_phys, sp->fb_size);
184 if (!sp->fb_base) {
185 err = -ENOMEM;
186 goto err_release_pci;
187 }
188
189 err = s3d_set_fbinfo(sp);
190 if (err)
191 goto err_unmap_fb;
192
193 pci_set_drvdata(pdev, info);
194
195 printk("s3d: Found device at %s\n", pci_name(pdev));
196
197 err = register_framebuffer(info);
198 if (err < 0) {
199 printk(KERN_ERR "s3d: Could not register framebuffer %s\n",
200 pci_name(pdev));
201 goto err_unmap_fb;
202 }
203
204 return 0;
205
206err_unmap_fb:
207 iounmap(sp->fb_base);
208
209err_release_pci:
210 pci_release_region(pdev, 1);
211
212err_release_fb:
213 framebuffer_release(info);
214
215err_disable:
216 pci_disable_device(pdev);
217
218err_out:
219 return err;
220}
221
222static const struct pci_device_id s3d_pci_table[] = {
223 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002c), },
224 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002d), },
225 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002e), },
226 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002f), },
227 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0030), },
228 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0031), },
229 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0032), },
230 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0033), },
231 { 0, }
232};
233
234static struct pci_driver s3d_driver = {
235 .driver = {
236 .suppress_bind_attrs = true,
237 },
238 .name = "s3d",
239 .id_table = s3d_pci_table,
240 .probe = s3d_pci_register,
241};
242
243static int __init s3d_init(void)
244{
245 if (fb_get_options("s3d", NULL))
246 return -ENODEV;
247
248 return pci_register_driver(&s3d_driver);
249}
250device_initcall(s3d_init);
251
