i2c: tegra: Add stub runtime power management
[linux-2.6.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/fb.h>
9 #include <linux/pci.h>
10 #include <linux/init.h>
11 #include <linux/of_device.h>
12
13 #include <asm/io.h>
14
15 struct s3d_info {
16         struct fb_info          *info;
17         struct pci_dev          *pdev;
18
19         char __iomem            *fb_base;
20         unsigned long           fb_base_phys;
21
22         struct device_node      *of_node;
23
24         unsigned int            width;
25         unsigned int            height;
26         unsigned int            depth;
27         unsigned int            fb_size;
28
29         u32                     pseudo_palette[16];
30 };
31
32 static int __devinit s3d_get_props(struct s3d_info *sp)
33 {
34         sp->width = of_getintprop_default(sp->of_node, "width", 0);
35         sp->height = of_getintprop_default(sp->of_node, "height", 0);
36         sp->depth = of_getintprop_default(sp->of_node, "depth", 8);
37
38         if (!sp->width || !sp->height) {
39                 printk(KERN_ERR "s3d: Critical properties missing for %s\n",
40                        pci_name(sp->pdev));
41                 return -EINVAL;
42         }
43
44         return 0;
45 }
46
47 static int s3d_setcolreg(unsigned regno,
48                          unsigned red, unsigned green, unsigned blue,
49                          unsigned transp, struct fb_info *info)
50 {
51         u32 value;
52
53         if (regno < 16) {
54                 red >>= 8;
55                 green >>= 8;
56                 blue >>= 8;
57
58                 value = (blue << 24) | (green << 16) | (red << 8);
59                 ((u32 *)info->pseudo_palette)[regno] = value;
60         }
61
62         return 0;
63 }
64
65 static struct fb_ops s3d_ops = {
66         .owner                  = THIS_MODULE,
67         .fb_setcolreg           = s3d_setcolreg,
68         .fb_fillrect            = cfb_fillrect,
69         .fb_copyarea            = cfb_copyarea,
70         .fb_imageblit           = cfb_imageblit,
71 };
72
73 static int __devinit 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->flags = FBINFO_DEFAULT;
79         info->fbops = &s3d_ops;
80         info->screen_base = sp->fb_base;
81         info->screen_size = sp->fb_size;
82
83         info->pseudo_palette = sp->pseudo_palette;
84
85         /* Fill fix common fields */
86         strlcpy(info->fix.id, "s3d", sizeof(info->fix.id));
87         info->fix.smem_start = sp->fb_base_phys;
88         info->fix.smem_len = sp->fb_size;
89         info->fix.type = FB_TYPE_PACKED_PIXELS;
90         if (sp->depth == 32 || sp->depth == 24)
91                 info->fix.visual = FB_VISUAL_TRUECOLOR;
92         else
93                 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
94
95         var->xres = sp->width;
96         var->yres = sp->height;
97         var->xres_virtual = var->xres;
98         var->yres_virtual = var->yres;
99         var->bits_per_pixel = sp->depth;
100
101         var->red.offset = 8;
102         var->red.length = 8;
103         var->green.offset = 16;
104         var->green.length = 8;
105         var->blue.offset = 24;
106         var->blue.length = 8;
107         var->transp.offset = 0;
108         var->transp.length = 0;
109
110         if (fb_alloc_cmap(&info->cmap, 256, 0)) {
111                 printk(KERN_ERR "s3d: Cannot allocate color map.\n");
112                 return -ENOMEM;
113         }
114
115         return 0;
116 }
117
118 static int __devinit s3d_pci_register(struct pci_dev *pdev,
119                                       const struct pci_device_id *ent)
120 {
121         struct fb_info *info;
122         struct s3d_info *sp;
123         int err;
124
125         err = pci_enable_device(pdev);
126         if (err < 0) {
127                 printk(KERN_ERR "s3d: Cannot enable PCI device %s\n",
128                        pci_name(pdev));
129                 goto err_out;
130         }
131
132         info = framebuffer_alloc(sizeof(struct s3d_info), &pdev->dev);
133         if (!info) {
134                 printk(KERN_ERR "s3d: Cannot allocate fb_info\n");
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         /* XXX 'linebytes' is often wrong, it is equal to the width
164          * XXX with depth of 32 on my XVR-2500 which is clearly not
165          * XXX right.  So we don't try to use it.
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                 goto err_release_pci;
186
187         err = s3d_set_fbinfo(sp);
188         if (err)
189                 goto err_unmap_fb;
190
191         pci_set_drvdata(pdev, info);
192
193         printk("s3d: Found device at %s\n", pci_name(pdev));
194
195         err = register_framebuffer(info);
196         if (err < 0) {
197                 printk(KERN_ERR "s3d: Could not register framebuffer %s\n",
198                        pci_name(pdev));
199                 goto err_unmap_fb;
200         }
201
202         return 0;
203
204 err_unmap_fb:
205         iounmap(sp->fb_base);
206
207 err_release_pci:
208         pci_release_region(pdev, 1);
209
210 err_release_fb:
211         framebuffer_release(info);
212
213 err_disable:
214         pci_disable_device(pdev);
215
216 err_out:
217         return err;
218 }
219
220 static void __devexit s3d_pci_unregister(struct pci_dev *pdev)
221 {
222         struct fb_info *info = pci_get_drvdata(pdev);
223         struct s3d_info *sp = info->par;
224
225         unregister_framebuffer(info);
226
227         iounmap(sp->fb_base);
228
229         pci_release_region(pdev, 1);
230
231         framebuffer_release(info);
232
233         pci_disable_device(pdev);
234 }
235
236 static struct pci_device_id s3d_pci_table[] = {
237         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002c),       },
238         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002d),       },
239         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002e),       },
240         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002f),       },
241         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0030),       },
242         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0031),       },
243         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0032),       },
244         {       PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0033),       },
245         { 0, }
246 };
247
248 static struct pci_driver s3d_driver = {
249         .name           = "s3d",
250         .id_table       = s3d_pci_table,
251         .probe          = s3d_pci_register,
252         .remove         = __devexit_p(s3d_pci_unregister),
253 };
254
255 static int __init s3d_init(void)
256 {
257         if (fb_get_options("s3d", NULL))
258                 return -ENODEV;
259
260         return pci_register_driver(&s3d_driver);
261 }
262
263 static void __exit s3d_exit(void)
264 {
265         pci_unregister_driver(&s3d_driver);
266 }
267
268 module_init(s3d_init);
269 module_exit(s3d_exit);
270
271 MODULE_DESCRIPTION("framebuffer driver for Sun XVR-2500 graphics");
272 MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
273 MODULE_VERSION("1.0");
274 MODULE_LICENSE("GPL");