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71227521 DM |
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> | |
6cd5a86b | 12 | #include <linux/of_device.h> |
71227521 DM |
13 | |
14 | #include <asm/io.h> | |
71227521 DM |
15 | |
16 | struct 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 | ||
f2c13863 | 30 | u32 pseudo_palette[16]; |
71227521 DM |
31 | }; |
32 | ||
33 | static int __devinit 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 | ||
48 | static int s3d_setcolreg(unsigned regno, | |
49 | unsigned red, unsigned green, unsigned blue, | |
50 | unsigned transp, struct fb_info *info) | |
51 | { | |
52 | u32 value; | |
53 | ||
f2c13863 AD |
54 | if (regno < 16) { |
55 | red >>= 8; | |
56 | green >>= 8; | |
57 | blue >>= 8; | |
71227521 | 58 | |
f2c13863 AD |
59 | value = (blue << 24) | (green << 16) | (red << 8); |
60 | ((u32 *)info->pseudo_palette)[regno] = value; | |
61 | } | |
71227521 DM |
62 | |
63 | return 0; | |
64 | } | |
65 | ||
66 | static 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 | ||
74 | static int __devinit 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 | /* Fill fix common fields */ | |
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 | ||
119 | static int __devinit 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 | /* XXX 'linebytes' is often wrong, it is equal to the width | |
165 | * XXX with depth of 32 on my XVR-2500 which is clearly not | |
166 | * XXX right. So we don't try to use it. | |
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 | goto err_release_pci; | |
187 | ||
188 | err = s3d_set_fbinfo(sp); | |
189 | if (err) | |
190 | goto err_unmap_fb; | |
191 | ||
192 | pci_set_drvdata(pdev, info); | |
193 | ||
194 | printk("s3d: Found device at %s\n", pci_name(pdev)); | |
195 | ||
196 | err = register_framebuffer(info); | |
197 | if (err < 0) { | |
198 | printk(KERN_ERR "s3d: Could not register framebuffer %s\n", | |
199 | pci_name(pdev)); | |
200 | goto err_unmap_fb; | |
201 | } | |
202 | ||
203 | return 0; | |
204 | ||
205 | err_unmap_fb: | |
206 | iounmap(sp->fb_base); | |
207 | ||
208 | err_release_pci: | |
209 | pci_release_region(pdev, 1); | |
210 | ||
211 | err_release_fb: | |
212 | framebuffer_release(info); | |
213 | ||
214 | err_disable: | |
215 | pci_disable_device(pdev); | |
216 | ||
217 | err_out: | |
218 | return err; | |
219 | } | |
220 | ||
221 | static void __devexit s3d_pci_unregister(struct pci_dev *pdev) | |
222 | { | |
223 | struct fb_info *info = pci_get_drvdata(pdev); | |
224 | struct s3d_info *sp = info->par; | |
225 | ||
226 | unregister_framebuffer(info); | |
227 | ||
228 | iounmap(sp->fb_base); | |
229 | ||
230 | pci_release_region(pdev, 1); | |
231 | ||
232 | framebuffer_release(info); | |
233 | ||
234 | pci_disable_device(pdev); | |
235 | } | |
236 | ||
237 | static struct pci_device_id s3d_pci_table[] = { | |
de9f0cf9 DM |
238 | { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002c), }, |
239 | { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002d), }, | |
240 | { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002e), }, | |
241 | { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002f), }, | |
242 | { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0030), }, | |
243 | { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0031), }, | |
244 | { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0032), }, | |
245 | { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0033), }, | |
71227521 DM |
246 | { 0, } |
247 | }; | |
248 | ||
249 | static struct pci_driver s3d_driver = { | |
250 | .name = "s3d", | |
251 | .id_table = s3d_pci_table, | |
252 | .probe = s3d_pci_register, | |
253 | .remove = __devexit_p(s3d_pci_unregister), | |
254 | }; | |
255 | ||
256 | static int __init s3d_init(void) | |
257 | { | |
258 | if (fb_get_options("s3d", NULL)) | |
259 | return -ENODEV; | |
260 | ||
261 | return pci_register_driver(&s3d_driver); | |
262 | } | |
263 | ||
264 | static void __exit s3d_exit(void) | |
265 | { | |
266 | pci_unregister_driver(&s3d_driver); | |
267 | } | |
268 | ||
269 | module_init(s3d_init); | |
270 | module_exit(s3d_exit); | |
271 | ||
272 | MODULE_DESCRIPTION("framebuffer driver for Sun XVR-2500 graphics"); | |
273 | MODULE_AUTHOR("David S. Miller <davem@davemloft.net>"); | |
274 | MODULE_VERSION("1.0"); | |
275 | MODULE_LICENSE("GPL"); |