1 |
62 |
marcus.erl |
/*
|
2 |
|
|
* framebuffer driver for Intel Based Mac's
|
3 |
|
|
*
|
4 |
|
|
* (c) 2006 Edgar Hucek <gimli@dark-green.com>
|
5 |
|
|
* Original imac driver written by Gerd Knorr <kraxel@goldbach.in-berlin.de>
|
6 |
|
|
*
|
7 |
|
|
*/
|
8 |
|
|
|
9 |
|
|
#include <linux/delay.h>
|
10 |
|
|
#include <linux/errno.h>
|
11 |
|
|
#include <linux/fb.h>
|
12 |
|
|
#include <linux/kernel.h>
|
13 |
|
|
#include <linux/init.h>
|
14 |
|
|
#include <linux/ioport.h>
|
15 |
|
|
#include <linux/mm.h>
|
16 |
|
|
#include <linux/module.h>
|
17 |
|
|
#include <linux/platform_device.h>
|
18 |
|
|
#include <linux/screen_info.h>
|
19 |
|
|
#include <linux/slab.h>
|
20 |
|
|
#include <linux/string.h>
|
21 |
|
|
#include <linux/dmi.h>
|
22 |
|
|
#include <linux/efi.h>
|
23 |
|
|
|
24 |
|
|
#include <asm/io.h>
|
25 |
|
|
|
26 |
|
|
#include <video/vga.h>
|
27 |
|
|
|
28 |
|
|
typedef enum _MAC_TYPE {
|
29 |
|
|
M_I17,
|
30 |
|
|
M_I20,
|
31 |
|
|
M_MINI,
|
32 |
|
|
M_MACBOOK,
|
33 |
|
|
M_UNKNOWN
|
34 |
|
|
} MAC_TYPE;
|
35 |
|
|
|
36 |
|
|
/* --------------------------------------------------------------------- */
|
37 |
|
|
|
38 |
|
|
static struct fb_var_screeninfo imacfb_defined __initdata = {
|
39 |
|
|
.activate = FB_ACTIVATE_NOW,
|
40 |
|
|
.height = -1,
|
41 |
|
|
.width = -1,
|
42 |
|
|
.right_margin = 32,
|
43 |
|
|
.upper_margin = 16,
|
44 |
|
|
.lower_margin = 4,
|
45 |
|
|
.vsync_len = 4,
|
46 |
|
|
.vmode = FB_VMODE_NONINTERLACED,
|
47 |
|
|
};
|
48 |
|
|
|
49 |
|
|
static struct fb_fix_screeninfo imacfb_fix __initdata = {
|
50 |
|
|
.id = "IMAC VGA",
|
51 |
|
|
.type = FB_TYPE_PACKED_PIXELS,
|
52 |
|
|
.accel = FB_ACCEL_NONE,
|
53 |
|
|
.visual = FB_VISUAL_TRUECOLOR,
|
54 |
|
|
};
|
55 |
|
|
|
56 |
|
|
static int inverse;
|
57 |
|
|
static int model = M_UNKNOWN;
|
58 |
|
|
static int manual_height;
|
59 |
|
|
static int manual_width;
|
60 |
|
|
|
61 |
|
|
static int set_system(const struct dmi_system_id *id)
|
62 |
|
|
{
|
63 |
|
|
printk(KERN_INFO "imacfb: %s detected - set system to %ld\n",
|
64 |
|
|
id->ident, (long)id->driver_data);
|
65 |
|
|
|
66 |
|
|
model = (long)id->driver_data;
|
67 |
|
|
|
68 |
|
|
return 0;
|
69 |
|
|
}
|
70 |
|
|
|
71 |
|
|
static struct dmi_system_id __initdata dmi_system_table[] = {
|
72 |
|
|
{ set_system, "iMac4,1", {
|
73 |
|
|
DMI_MATCH(DMI_BIOS_VENDOR,"Apple Computer, Inc."),
|
74 |
|
|
DMI_MATCH(DMI_PRODUCT_NAME,"iMac4,1") }, (void*)M_I17},
|
75 |
|
|
{ set_system, "MacBookPro1,1", {
|
76 |
|
|
DMI_MATCH(DMI_BIOS_VENDOR,"Apple Computer, Inc."),
|
77 |
|
|
DMI_MATCH(DMI_PRODUCT_NAME,"MacBookPro1,1") }, (void*)M_I17},
|
78 |
|
|
{ set_system, "MacBook1,1", {
|
79 |
|
|
DMI_MATCH(DMI_BIOS_VENDOR,"Apple Computer, Inc."),
|
80 |
|
|
DMI_MATCH(DMI_PRODUCT_NAME,"MacBook1,1")}, (void *)M_MACBOOK},
|
81 |
|
|
{ set_system, "Macmini1,1", {
|
82 |
|
|
DMI_MATCH(DMI_BIOS_VENDOR,"Apple Computer, Inc."),
|
83 |
|
|
DMI_MATCH(DMI_PRODUCT_NAME,"Macmini1,1")}, (void *)M_MINI},
|
84 |
|
|
{},
|
85 |
|
|
};
|
86 |
|
|
|
87 |
|
|
#define DEFAULT_FB_MEM 1024*1024*16
|
88 |
|
|
|
89 |
|
|
/* --------------------------------------------------------------------- */
|
90 |
|
|
|
91 |
|
|
static int imacfb_setcolreg(unsigned regno, unsigned red, unsigned green,
|
92 |
|
|
unsigned blue, unsigned transp,
|
93 |
|
|
struct fb_info *info)
|
94 |
|
|
{
|
95 |
|
|
/*
|
96 |
|
|
* Set a single color register. The values supplied are
|
97 |
|
|
* already rounded down to the hardware's capabilities
|
98 |
|
|
* (according to the entries in the `var' structure). Return
|
99 |
|
|
* != 0 for invalid regno.
|
100 |
|
|
*/
|
101 |
|
|
|
102 |
|
|
if (regno >= info->cmap.len)
|
103 |
|
|
return 1;
|
104 |
|
|
|
105 |
|
|
if (regno < 16) {
|
106 |
|
|
red >>= 8;
|
107 |
|
|
green >>= 8;
|
108 |
|
|
blue >>= 8;
|
109 |
|
|
((u32 *)(info->pseudo_palette))[regno] =
|
110 |
|
|
(red << info->var.red.offset) |
|
111 |
|
|
(green << info->var.green.offset) |
|
112 |
|
|
(blue << info->var.blue.offset);
|
113 |
|
|
}
|
114 |
|
|
return 0;
|
115 |
|
|
}
|
116 |
|
|
|
117 |
|
|
static struct fb_ops imacfb_ops = {
|
118 |
|
|
.owner = THIS_MODULE,
|
119 |
|
|
.fb_setcolreg = imacfb_setcolreg,
|
120 |
|
|
.fb_fillrect = cfb_fillrect,
|
121 |
|
|
.fb_copyarea = cfb_copyarea,
|
122 |
|
|
.fb_imageblit = cfb_imageblit,
|
123 |
|
|
};
|
124 |
|
|
|
125 |
|
|
static int __init imacfb_setup(char *options)
|
126 |
|
|
{
|
127 |
|
|
char *this_opt;
|
128 |
|
|
|
129 |
|
|
if (!options || !*options)
|
130 |
|
|
return 0;
|
131 |
|
|
|
132 |
|
|
while ((this_opt = strsep(&options, ",")) != NULL) {
|
133 |
|
|
if (!*this_opt) continue;
|
134 |
|
|
|
135 |
|
|
if (!strcmp(this_opt, "inverse"))
|
136 |
|
|
inverse = 1;
|
137 |
|
|
else if (!strcmp(this_opt, "i17"))
|
138 |
|
|
model = M_I17;
|
139 |
|
|
else if (!strcmp(this_opt, "i20"))
|
140 |
|
|
model = M_I20;
|
141 |
|
|
else if (!strcmp(this_opt, "mini"))
|
142 |
|
|
model = M_MINI;
|
143 |
|
|
else if (!strcmp(this_opt, "macbook"))
|
144 |
|
|
model = M_MACBOOK;
|
145 |
|
|
else if (!strncmp(this_opt, "height:", 7))
|
146 |
|
|
manual_height = simple_strtoul(this_opt+7, NULL, 0);
|
147 |
|
|
else if (!strncmp(this_opt, "width:", 6))
|
148 |
|
|
manual_width = simple_strtoul(this_opt+6, NULL, 0);
|
149 |
|
|
}
|
150 |
|
|
return 0;
|
151 |
|
|
}
|
152 |
|
|
|
153 |
|
|
static int __init imacfb_probe(struct platform_device *dev)
|
154 |
|
|
{
|
155 |
|
|
struct fb_info *info;
|
156 |
|
|
int err;
|
157 |
|
|
unsigned int size_vmode;
|
158 |
|
|
unsigned int size_remap;
|
159 |
|
|
unsigned int size_total;
|
160 |
|
|
|
161 |
|
|
screen_info.lfb_depth = 32;
|
162 |
|
|
screen_info.lfb_size = DEFAULT_FB_MEM / 0x10000;
|
163 |
|
|
screen_info.pages=1;
|
164 |
|
|
screen_info.blue_size = 8;
|
165 |
|
|
screen_info.blue_pos = 0;
|
166 |
|
|
screen_info.green_size = 8;
|
167 |
|
|
screen_info.green_pos = 8;
|
168 |
|
|
screen_info.red_size = 8;
|
169 |
|
|
screen_info.red_pos = 16;
|
170 |
|
|
screen_info.rsvd_size = 8;
|
171 |
|
|
screen_info.rsvd_pos = 24;
|
172 |
|
|
|
173 |
|
|
switch (model) {
|
174 |
|
|
case M_I17:
|
175 |
|
|
screen_info.lfb_width = 1440;
|
176 |
|
|
screen_info.lfb_height = 900;
|
177 |
|
|
screen_info.lfb_linelength = 1472 * 4;
|
178 |
|
|
screen_info.lfb_base = 0x80010000;
|
179 |
|
|
break;
|
180 |
|
|
case M_I20:
|
181 |
|
|
screen_info.lfb_width = 1680;
|
182 |
|
|
screen_info.lfb_height = 1050;
|
183 |
|
|
screen_info.lfb_linelength = 1728 * 4;
|
184 |
|
|
screen_info.lfb_base = 0x80010000;
|
185 |
|
|
break;
|
186 |
|
|
case M_MINI:
|
187 |
|
|
screen_info.lfb_width = 1024;
|
188 |
|
|
screen_info.lfb_height = 768;
|
189 |
|
|
screen_info.lfb_linelength = 2048 * 4;
|
190 |
|
|
screen_info.lfb_base = 0x80000000;
|
191 |
|
|
break;
|
192 |
|
|
case M_MACBOOK:
|
193 |
|
|
screen_info.lfb_width = 1280;
|
194 |
|
|
screen_info.lfb_height = 800;
|
195 |
|
|
screen_info.lfb_linelength = 2048 * 4;
|
196 |
|
|
screen_info.lfb_base = 0x80000000;
|
197 |
|
|
break;
|
198 |
|
|
}
|
199 |
|
|
|
200 |
|
|
/* if the user wants to manually specify height/width,
|
201 |
|
|
we will override the defaults */
|
202 |
|
|
/* TODO: eventually get auto-detection working */
|
203 |
|
|
if (manual_height > 0)
|
204 |
|
|
screen_info.lfb_height = manual_height;
|
205 |
|
|
if (manual_width > 0)
|
206 |
|
|
screen_info.lfb_width = manual_width;
|
207 |
|
|
|
208 |
|
|
imacfb_fix.smem_start = screen_info.lfb_base;
|
209 |
|
|
imacfb_defined.bits_per_pixel = screen_info.lfb_depth;
|
210 |
|
|
imacfb_defined.xres = screen_info.lfb_width;
|
211 |
|
|
imacfb_defined.yres = screen_info.lfb_height;
|
212 |
|
|
imacfb_fix.line_length = screen_info.lfb_linelength;
|
213 |
|
|
|
214 |
|
|
/* size_vmode -- that is the amount of memory needed for the
|
215 |
|
|
* used video mode, i.e. the minimum amount of
|
216 |
|
|
* memory we need. */
|
217 |
|
|
size_vmode = imacfb_defined.yres * imacfb_fix.line_length;
|
218 |
|
|
|
219 |
|
|
/* size_total -- all video memory we have. Used for
|
220 |
|
|
* entries, ressource allocation and bounds
|
221 |
|
|
* checking. */
|
222 |
|
|
size_total = screen_info.lfb_size * 65536;
|
223 |
|
|
if (size_total < size_vmode)
|
224 |
|
|
size_total = size_vmode;
|
225 |
|
|
|
226 |
|
|
/* size_remap -- the amount of video memory we are going to
|
227 |
|
|
* use for imacfb. With modern cards it is no
|
228 |
|
|
* option to simply use size_total as that
|
229 |
|
|
* wastes plenty of kernel address space. */
|
230 |
|
|
size_remap = size_vmode * 2;
|
231 |
|
|
if (size_remap < size_vmode)
|
232 |
|
|
size_remap = size_vmode;
|
233 |
|
|
if (size_remap > size_total)
|
234 |
|
|
size_remap = size_total;
|
235 |
|
|
imacfb_fix.smem_len = size_remap;
|
236 |
|
|
|
237 |
|
|
if (!request_mem_region(imacfb_fix.smem_start, size_total, "imacfb")) {
|
238 |
|
|
printk(KERN_WARNING
|
239 |
|
|
"imacfb: cannot reserve video memory at 0x%lx\n",
|
240 |
|
|
imacfb_fix.smem_start);
|
241 |
|
|
/* We cannot make this fatal. Sometimes this comes from magic
|
242 |
|
|
spaces our resource handlers simply don't know about */
|
243 |
|
|
}
|
244 |
|
|
|
245 |
|
|
info = framebuffer_alloc(sizeof(u32) * 16, &dev->dev);
|
246 |
|
|
if (!info) {
|
247 |
|
|
err = -ENOMEM;
|
248 |
|
|
goto err_release_mem;
|
249 |
|
|
}
|
250 |
|
|
info->pseudo_palette = info->par;
|
251 |
|
|
info->par = NULL;
|
252 |
|
|
|
253 |
|
|
info->screen_base = ioremap(imacfb_fix.smem_start, imacfb_fix.smem_len);
|
254 |
|
|
if (!info->screen_base) {
|
255 |
|
|
printk(KERN_ERR "imacfb: abort, cannot ioremap video memory "
|
256 |
|
|
"0x%x @ 0x%lx\n",
|
257 |
|
|
imacfb_fix.smem_len, imacfb_fix.smem_start);
|
258 |
|
|
err = -EIO;
|
259 |
|
|
goto err_unmap;
|
260 |
|
|
}
|
261 |
|
|
|
262 |
|
|
printk(KERN_INFO "imacfb: framebuffer at 0x%lx, mapped to 0x%p, "
|
263 |
|
|
"using %dk, total %dk\n",
|
264 |
|
|
imacfb_fix.smem_start, info->screen_base,
|
265 |
|
|
size_remap/1024, size_total/1024);
|
266 |
|
|
printk(KERN_INFO "imacfb: mode is %dx%dx%d, linelength=%d, pages=%d\n",
|
267 |
|
|
imacfb_defined.xres, imacfb_defined.yres,
|
268 |
|
|
imacfb_defined.bits_per_pixel, imacfb_fix.line_length,
|
269 |
|
|
screen_info.pages);
|
270 |
|
|
|
271 |
|
|
imacfb_defined.xres_virtual = imacfb_defined.xres;
|
272 |
|
|
imacfb_defined.yres_virtual = imacfb_fix.smem_len /
|
273 |
|
|
imacfb_fix.line_length;
|
274 |
|
|
printk(KERN_INFO "imacfb: scrolling: redraw\n");
|
275 |
|
|
imacfb_defined.yres_virtual = imacfb_defined.yres;
|
276 |
|
|
|
277 |
|
|
/* some dummy values for timing to make fbset happy */
|
278 |
|
|
imacfb_defined.pixclock = 10000000 / imacfb_defined.xres *
|
279 |
|
|
1000 / imacfb_defined.yres;
|
280 |
|
|
imacfb_defined.left_margin = (imacfb_defined.xres / 8) & 0xf8;
|
281 |
|
|
imacfb_defined.hsync_len = (imacfb_defined.xres / 8) & 0xf8;
|
282 |
|
|
|
283 |
|
|
imacfb_defined.red.offset = screen_info.red_pos;
|
284 |
|
|
imacfb_defined.red.length = screen_info.red_size;
|
285 |
|
|
imacfb_defined.green.offset = screen_info.green_pos;
|
286 |
|
|
imacfb_defined.green.length = screen_info.green_size;
|
287 |
|
|
imacfb_defined.blue.offset = screen_info.blue_pos;
|
288 |
|
|
imacfb_defined.blue.length = screen_info.blue_size;
|
289 |
|
|
imacfb_defined.transp.offset = screen_info.rsvd_pos;
|
290 |
|
|
imacfb_defined.transp.length = screen_info.rsvd_size;
|
291 |
|
|
|
292 |
|
|
printk(KERN_INFO "imacfb: %s: "
|
293 |
|
|
"size=%d:%d:%d:%d, shift=%d:%d:%d:%d\n",
|
294 |
|
|
"Truecolor",
|
295 |
|
|
screen_info.rsvd_size,
|
296 |
|
|
screen_info.red_size,
|
297 |
|
|
screen_info.green_size,
|
298 |
|
|
screen_info.blue_size,
|
299 |
|
|
screen_info.rsvd_pos,
|
300 |
|
|
screen_info.red_pos,
|
301 |
|
|
screen_info.green_pos,
|
302 |
|
|
screen_info.blue_pos);
|
303 |
|
|
|
304 |
|
|
imacfb_fix.ypanstep = 0;
|
305 |
|
|
imacfb_fix.ywrapstep = 0;
|
306 |
|
|
|
307 |
|
|
/* request failure does not faze us, as vgacon probably has this
|
308 |
|
|
* region already (FIXME) */
|
309 |
|
|
request_region(0x3c0, 32, "imacfb");
|
310 |
|
|
|
311 |
|
|
info->fbops = &imacfb_ops;
|
312 |
|
|
info->var = imacfb_defined;
|
313 |
|
|
info->fix = imacfb_fix;
|
314 |
|
|
info->flags = FBINFO_FLAG_DEFAULT;
|
315 |
|
|
|
316 |
|
|
if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
|
317 |
|
|
err = -ENOMEM;
|
318 |
|
|
goto err_unmap;
|
319 |
|
|
}
|
320 |
|
|
if (register_framebuffer(info)<0) {
|
321 |
|
|
err = -EINVAL;
|
322 |
|
|
goto err_fb_dealoc;
|
323 |
|
|
}
|
324 |
|
|
printk(KERN_INFO "fb%d: %s frame buffer device\n",
|
325 |
|
|
info->node, info->fix.id);
|
326 |
|
|
return 0;
|
327 |
|
|
|
328 |
|
|
err_fb_dealoc:
|
329 |
|
|
fb_dealloc_cmap(&info->cmap);
|
330 |
|
|
err_unmap:
|
331 |
|
|
iounmap(info->screen_base);
|
332 |
|
|
framebuffer_release(info);
|
333 |
|
|
err_release_mem:
|
334 |
|
|
release_mem_region(imacfb_fix.smem_start, size_total);
|
335 |
|
|
return err;
|
336 |
|
|
}
|
337 |
|
|
|
338 |
|
|
static struct platform_driver imacfb_driver = {
|
339 |
|
|
.probe = imacfb_probe,
|
340 |
|
|
.driver = {
|
341 |
|
|
.name = "imacfb",
|
342 |
|
|
},
|
343 |
|
|
};
|
344 |
|
|
|
345 |
|
|
static struct platform_device imacfb_device = {
|
346 |
|
|
.name = "imacfb",
|
347 |
|
|
};
|
348 |
|
|
|
349 |
|
|
static int __init imacfb_init(void)
|
350 |
|
|
{
|
351 |
|
|
int ret;
|
352 |
|
|
char *option = NULL;
|
353 |
|
|
|
354 |
|
|
if (!efi_enabled)
|
355 |
|
|
return -ENODEV;
|
356 |
|
|
if (!dmi_check_system(dmi_system_table))
|
357 |
|
|
return -ENODEV;
|
358 |
|
|
if (model == M_UNKNOWN)
|
359 |
|
|
return -ENODEV;
|
360 |
|
|
|
361 |
|
|
if (fb_get_options("imacfb", &option))
|
362 |
|
|
return -ENODEV;
|
363 |
|
|
|
364 |
|
|
imacfb_setup(option);
|
365 |
|
|
ret = platform_driver_register(&imacfb_driver);
|
366 |
|
|
|
367 |
|
|
if (!ret) {
|
368 |
|
|
ret = platform_device_register(&imacfb_device);
|
369 |
|
|
if (ret)
|
370 |
|
|
platform_driver_unregister(&imacfb_driver);
|
371 |
|
|
}
|
372 |
|
|
return ret;
|
373 |
|
|
}
|
374 |
|
|
module_init(imacfb_init);
|
375 |
|
|
|
376 |
|
|
MODULE_LICENSE("GPL");
|