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