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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 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 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
165
166
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
207err_unmap_fb:
208 iounmap(sp->fb_base);
209
210err_release_pci:
211 pci_release_region(pdev, 1);
212
213err_release_fb:
214 framebuffer_release(info);
215
216err_disable:
217 pci_disable_device(pdev);
218
219err_out:
220 return err;
221}
222
223static 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
235static 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
244static 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}
251device_initcall(s3d_init);
252
