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Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux...
[mv-sheeva.git] / drivers / video / sunxvr2500.c
1 /* s3d.c: Sun 3DLABS XVR-2500 et al. driver for sparc64 systems
2  *
3  * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
4  */
5
6 #include <linux/module.h>
7 #include <linux/kernel.h>
8 #include <linux/slab.h>
9 #include <linux/fb.h>
10 #include <linux/pci.h>
11 #include <linux/init.h>
12
13 #include <asm/io.h>
14 #include <asm/prom.h>
15 #include <asm/of_device.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
34 static int __devinit 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
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 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
75 static int __devinit 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         strlcpy(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
120 static int __devinit 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 = pci_enable_device(pdev);
128         if (err < 0) {
129                 printk(KERN_ERR "s3d: Cannot enable PCI device %s\n",
130                        pci_name(pdev));
131                 goto err_out;
132         }
133
134         info = framebuffer_alloc(sizeof(struct s3d_info), &pdev->dev);
135         if (!info) {
136                 printk(KERN_ERR "s3d: Cannot allocate fb_info\n");
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                 goto err_release_pci;
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
206 err_unmap_fb:
207         iounmap(sp->fb_base);
208
209 err_release_pci:
210         pci_release_region(pdev, 1);
211
212 err_release_fb:
213         framebuffer_release(info);
214
215 err_disable:
216         pci_disable_device(pdev);
217
218 err_out:
219         return err;
220 }
221
222 static void __devexit s3d_pci_unregister(struct pci_dev *pdev)
223 {
224         struct fb_info *info = pci_get_drvdata(pdev);
225         struct s3d_info *sp = info->par;
226
227         unregister_framebuffer(info);
228
229         iounmap(sp->fb_base);
230
231         pci_release_region(pdev, 1);
232
233         framebuffer_release(info);
234
235         pci_disable_device(pdev);
236 }
237
238 static struct pci_device_id s3d_pci_table[] = {
239         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002c),       },
240         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002d),       },
241         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002e),       },
242         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002f),       },
243         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0030),       },
244         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0031),       },
245         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0032),       },
246         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0033),       },
247         { 0, }
248 };
249
250 static struct pci_driver s3d_driver = {
251         .name           = "s3d",
252         .id_table       = s3d_pci_table,
253         .probe          = s3d_pci_register,
254         .remove         = __devexit_p(s3d_pci_unregister),
255 };
256
257 static int __init s3d_init(void)
258 {
259         if (fb_get_options("s3d", NULL))
260                 return -ENODEV;
261
262         return pci_register_driver(&s3d_driver);
263 }
264
265 static void __exit s3d_exit(void)
266 {
267         pci_unregister_driver(&s3d_driver);
268 }
269
270 module_init(s3d_init);
271 module_exit(s3d_exit);
272
273 MODULE_DESCRIPTION("framebuffer driver for Sun XVR-2500 graphics");
274 MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
275 MODULE_VERSION("1.0");
276 MODULE_LICENSE("GPL");