Root/
1 | /* |
2 | * Framebuffer driver for EFI/UEFI based system |
3 | * |
4 | * (c) 2006 Edgar Hucek <gimli@dark-green.com> |
5 | * Original efi driver written by Gerd Knorr <kraxel@goldbach.in-berlin.de> |
6 | * |
7 | */ |
8 | |
9 | #include <linux/module.h> |
10 | #include <linux/kernel.h> |
11 | #include <linux/errno.h> |
12 | #include <linux/fb.h> |
13 | #include <linux/platform_device.h> |
14 | #include <linux/screen_info.h> |
15 | #include <linux/dmi.h> |
16 | #include <linux/pci.h> |
17 | #include <video/vga.h> |
18 | |
19 | static bool request_mem_succeeded = false; |
20 | |
21 | static struct pci_dev *default_vga; |
22 | |
23 | static struct fb_var_screeninfo efifb_defined = { |
24 | .activate = FB_ACTIVATE_NOW, |
25 | .height = -1, |
26 | .width = -1, |
27 | .right_margin = 32, |
28 | .upper_margin = 16, |
29 | .lower_margin = 4, |
30 | .vsync_len = 4, |
31 | .vmode = FB_VMODE_NONINTERLACED, |
32 | }; |
33 | |
34 | static struct fb_fix_screeninfo efifb_fix = { |
35 | .id = "EFI VGA", |
36 | .type = FB_TYPE_PACKED_PIXELS, |
37 | .accel = FB_ACCEL_NONE, |
38 | .visual = FB_VISUAL_TRUECOLOR, |
39 | }; |
40 | |
41 | enum { |
42 | M_I17, /* 17-Inch iMac */ |
43 | M_I20, /* 20-Inch iMac */ |
44 | M_I20_SR, /* 20-Inch iMac (Santa Rosa) */ |
45 | M_I24, /* 24-Inch iMac */ |
46 | M_I24_8_1, /* 24-Inch iMac, 8,1th gen */ |
47 | M_I24_10_1, /* 24-Inch iMac, 10,1th gen */ |
48 | M_I27_11_1, /* 27-Inch iMac, 11,1th gen */ |
49 | M_MINI, /* Mac Mini */ |
50 | M_MINI_3_1, /* Mac Mini, 3,1th gen */ |
51 | M_MINI_4_1, /* Mac Mini, 4,1th gen */ |
52 | M_MB, /* MacBook */ |
53 | M_MB_2, /* MacBook, 2nd rev. */ |
54 | M_MB_3, /* MacBook, 3rd rev. */ |
55 | M_MB_5_1, /* MacBook, 5th rev. */ |
56 | M_MB_6_1, /* MacBook, 6th rev. */ |
57 | M_MB_7_1, /* MacBook, 7th rev. */ |
58 | M_MB_SR, /* MacBook, 2nd gen, (Santa Rosa) */ |
59 | M_MBA, /* MacBook Air */ |
60 | M_MBA_3, /* Macbook Air, 3rd rev */ |
61 | M_MBP, /* MacBook Pro */ |
62 | M_MBP_2, /* MacBook Pro 2nd gen */ |
63 | M_MBP_2_2, /* MacBook Pro 2,2nd gen */ |
64 | M_MBP_SR, /* MacBook Pro (Santa Rosa) */ |
65 | M_MBP_4, /* MacBook Pro, 4th gen */ |
66 | M_MBP_5_1, /* MacBook Pro, 5,1th gen */ |
67 | M_MBP_5_2, /* MacBook Pro, 5,2th gen */ |
68 | M_MBP_5_3, /* MacBook Pro, 5,3rd gen */ |
69 | M_MBP_6_1, /* MacBook Pro, 6,1th gen */ |
70 | M_MBP_6_2, /* MacBook Pro, 6,2th gen */ |
71 | M_MBP_7_1, /* MacBook Pro, 7,1th gen */ |
72 | M_MBP_8_2, /* MacBook Pro, 8,2nd gen */ |
73 | M_UNKNOWN /* placeholder */ |
74 | }; |
75 | |
76 | #define OVERRIDE_NONE 0x0 |
77 | #define OVERRIDE_BASE 0x1 |
78 | #define OVERRIDE_STRIDE 0x2 |
79 | #define OVERRIDE_HEIGHT 0x4 |
80 | #define OVERRIDE_WIDTH 0x8 |
81 | |
82 | static struct efifb_dmi_info { |
83 | char *optname; |
84 | unsigned long base; |
85 | int stride; |
86 | int width; |
87 | int height; |
88 | int flags; |
89 | } dmi_list[] __initdata = { |
90 | [M_I17] = { "i17", 0x80010000, 1472 * 4, 1440, 900, OVERRIDE_NONE }, |
91 | [M_I20] = { "i20", 0x80010000, 1728 * 4, 1680, 1050, OVERRIDE_NONE }, /* guess */ |
92 | [M_I20_SR] = { "imac7", 0x40010000, 1728 * 4, 1680, 1050, OVERRIDE_NONE }, |
93 | [M_I24] = { "i24", 0x80010000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, /* guess */ |
94 | [M_I24_8_1] = { "imac8", 0xc0060000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, |
95 | [M_I24_10_1] = { "imac10", 0xc0010000, 2048 * 4, 1920, 1080, OVERRIDE_NONE }, |
96 | [M_I27_11_1] = { "imac11", 0xc0010000, 2560 * 4, 2560, 1440, OVERRIDE_NONE }, |
97 | [M_MINI]= { "mini", 0x80000000, 2048 * 4, 1024, 768, OVERRIDE_NONE }, |
98 | [M_MINI_3_1] = { "mini31", 0x40010000, 1024 * 4, 1024, 768, OVERRIDE_NONE }, |
99 | [M_MINI_4_1] = { "mini41", 0xc0010000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, |
100 | [M_MB] = { "macbook", 0x80000000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, |
101 | [M_MB_5_1] = { "macbook51", 0x80010000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, |
102 | [M_MB_6_1] = { "macbook61", 0x80010000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, |
103 | [M_MB_7_1] = { "macbook71", 0x80010000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, |
104 | [M_MBA] = { "mba", 0x80000000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, |
105 | /* 11" Macbook Air 3,1 passes the wrong stride */ |
106 | [M_MBA_3] = { "mba3", 0, 2048 * 4, 0, 0, OVERRIDE_STRIDE }, |
107 | [M_MBP] = { "mbp", 0x80010000, 1472 * 4, 1440, 900, OVERRIDE_NONE }, |
108 | [M_MBP_2] = { "mbp2", 0, 0, 0, 0, OVERRIDE_NONE }, /* placeholder */ |
109 | [M_MBP_2_2] = { "mbp22", 0x80010000, 1472 * 4, 1440, 900, OVERRIDE_NONE }, |
110 | [M_MBP_SR] = { "mbp3", 0x80030000, 2048 * 4, 1440, 900, OVERRIDE_NONE }, |
111 | [M_MBP_4] = { "mbp4", 0xc0060000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, |
112 | [M_MBP_5_1] = { "mbp51", 0xc0010000, 2048 * 4, 1440, 900, OVERRIDE_NONE }, |
113 | [M_MBP_5_2] = { "mbp52", 0xc0010000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, |
114 | [M_MBP_5_3] = { "mbp53", 0xd0010000, 2048 * 4, 1440, 900, OVERRIDE_NONE }, |
115 | [M_MBP_6_1] = { "mbp61", 0x90030000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, |
116 | [M_MBP_6_2] = { "mbp62", 0x90030000, 2048 * 4, 1680, 1050, OVERRIDE_NONE }, |
117 | [M_MBP_7_1] = { "mbp71", 0xc0010000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, |
118 | [M_MBP_8_2] = { "mbp82", 0x90010000, 1472 * 4, 1440, 900, OVERRIDE_NONE }, |
119 | [M_UNKNOWN] = { NULL, 0, 0, 0, 0, OVERRIDE_NONE } |
120 | }; |
121 | |
122 | static int set_system(const struct dmi_system_id *id); |
123 | |
124 | #define EFIFB_DMI_SYSTEM_ID(vendor, name, enumid) \ |
125 | { set_system, name, { \ |
126 | DMI_MATCH(DMI_BIOS_VENDOR, vendor), \ |
127 | DMI_MATCH(DMI_PRODUCT_NAME, name) }, \ |
128 | &dmi_list[enumid] } |
129 | |
130 | static const struct dmi_system_id dmi_system_table[] __initconst = { |
131 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac4,1", M_I17), |
132 | /* At least one of these two will be right; maybe both? */ |
133 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac5,1", M_I20), |
134 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac5,1", M_I20), |
135 | /* At least one of these two will be right; maybe both? */ |
136 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac6,1", M_I24), |
137 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac6,1", M_I24), |
138 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac7,1", M_I20_SR), |
139 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac8,1", M_I24_8_1), |
140 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac10,1", M_I24_10_1), |
141 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac11,1", M_I27_11_1), |
142 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "Macmini1,1", M_MINI), |
143 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "Macmini3,1", M_MINI_3_1), |
144 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "Macmini4,1", M_MINI_4_1), |
145 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook1,1", M_MB), |
146 | /* At least one of these two will be right; maybe both? */ |
147 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook2,1", M_MB), |
148 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook2,1", M_MB), |
149 | /* At least one of these two will be right; maybe both? */ |
150 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook3,1", M_MB), |
151 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook3,1", M_MB), |
152 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook4,1", M_MB), |
153 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook5,1", M_MB_5_1), |
154 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook6,1", M_MB_6_1), |
155 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook7,1", M_MB_7_1), |
156 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookAir1,1", M_MBA), |
157 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookAir3,1", M_MBA_3), |
158 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro1,1", M_MBP), |
159 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro2,1", M_MBP_2), |
160 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro2,2", M_MBP_2_2), |
161 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro2,1", M_MBP_2), |
162 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro3,1", M_MBP_SR), |
163 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro3,1", M_MBP_SR), |
164 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro4,1", M_MBP_4), |
165 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,1", M_MBP_5_1), |
166 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,2", M_MBP_5_2), |
167 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,3", M_MBP_5_3), |
168 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro6,1", M_MBP_6_1), |
169 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro6,2", M_MBP_6_2), |
170 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro7,1", M_MBP_7_1), |
171 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro8,2", M_MBP_8_2), |
172 | {}, |
173 | }; |
174 | |
175 | #define choose_value(dmivalue, fwvalue, field, flags) ({ \ |
176 | typeof(fwvalue) _ret_ = fwvalue; \ |
177 | if ((flags) & (field)) \ |
178 | _ret_ = dmivalue; \ |
179 | else if ((fwvalue) == 0) \ |
180 | _ret_ = dmivalue; \ |
181 | _ret_; \ |
182 | }) |
183 | |
184 | static int set_system(const struct dmi_system_id *id) |
185 | { |
186 | struct efifb_dmi_info *info = id->driver_data; |
187 | |
188 | if (info->base == 0 && info->height == 0 && info->width == 0 |
189 | && info->stride == 0) |
190 | return 0; |
191 | |
192 | /* Trust the bootloader over the DMI tables */ |
193 | if (screen_info.lfb_base == 0) { |
194 | #if defined(CONFIG_PCI) |
195 | struct pci_dev *dev = NULL; |
196 | int found_bar = 0; |
197 | #endif |
198 | if (info->base) { |
199 | screen_info.lfb_base = choose_value(info->base, |
200 | screen_info.lfb_base, OVERRIDE_BASE, |
201 | info->flags); |
202 | |
203 | #if defined(CONFIG_PCI) |
204 | /* make sure that the address in the table is actually |
205 | * on a VGA device's PCI BAR */ |
206 | |
207 | for_each_pci_dev(dev) { |
208 | int i; |
209 | if ((dev->class >> 8) != PCI_CLASS_DISPLAY_VGA) |
210 | continue; |
211 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
212 | resource_size_t start, end; |
213 | |
214 | start = pci_resource_start(dev, i); |
215 | if (start == 0) |
216 | break; |
217 | end = pci_resource_end(dev, i); |
218 | if (screen_info.lfb_base >= start && |
219 | screen_info.lfb_base < end) { |
220 | found_bar = 1; |
221 | } |
222 | } |
223 | } |
224 | if (!found_bar) |
225 | screen_info.lfb_base = 0; |
226 | #endif |
227 | } |
228 | } |
229 | if (screen_info.lfb_base) { |
230 | screen_info.lfb_linelength = choose_value(info->stride, |
231 | screen_info.lfb_linelength, OVERRIDE_STRIDE, |
232 | info->flags); |
233 | screen_info.lfb_width = choose_value(info->width, |
234 | screen_info.lfb_width, OVERRIDE_WIDTH, |
235 | info->flags); |
236 | screen_info.lfb_height = choose_value(info->height, |
237 | screen_info.lfb_height, OVERRIDE_HEIGHT, |
238 | info->flags); |
239 | if (screen_info.orig_video_isVGA == 0) |
240 | screen_info.orig_video_isVGA = VIDEO_TYPE_EFI; |
241 | } else { |
242 | screen_info.lfb_linelength = 0; |
243 | screen_info.lfb_width = 0; |
244 | screen_info.lfb_height = 0; |
245 | screen_info.orig_video_isVGA = 0; |
246 | return 0; |
247 | } |
248 | |
249 | printk(KERN_INFO "efifb: dmi detected %s - framebuffer at 0x%08x " |
250 | "(%dx%d, stride %d)\n", id->ident, |
251 | screen_info.lfb_base, screen_info.lfb_width, |
252 | screen_info.lfb_height, screen_info.lfb_linelength); |
253 | |
254 | |
255 | return 1; |
256 | } |
257 | |
258 | static int efifb_setcolreg(unsigned regno, unsigned red, unsigned green, |
259 | unsigned blue, unsigned transp, |
260 | struct fb_info *info) |
261 | { |
262 | /* |
263 | * Set a single color register. The values supplied are |
264 | * already rounded down to the hardware's capabilities |
265 | * (according to the entries in the `var' structure). Return |
266 | * != 0 for invalid regno. |
267 | */ |
268 | |
269 | if (regno >= info->cmap.len) |
270 | return 1; |
271 | |
272 | if (regno < 16) { |
273 | red >>= 8; |
274 | green >>= 8; |
275 | blue >>= 8; |
276 | ((u32 *)(info->pseudo_palette))[regno] = |
277 | (red << info->var.red.offset) | |
278 | (green << info->var.green.offset) | |
279 | (blue << info->var.blue.offset); |
280 | } |
281 | return 0; |
282 | } |
283 | |
284 | static void efifb_destroy(struct fb_info *info) |
285 | { |
286 | if (info->screen_base) |
287 | iounmap(info->screen_base); |
288 | if (request_mem_succeeded) |
289 | release_mem_region(info->apertures->ranges[0].base, |
290 | info->apertures->ranges[0].size); |
291 | framebuffer_release(info); |
292 | } |
293 | |
294 | static struct fb_ops efifb_ops = { |
295 | .owner = THIS_MODULE, |
296 | .fb_destroy = efifb_destroy, |
297 | .fb_setcolreg = efifb_setcolreg, |
298 | .fb_fillrect = cfb_fillrect, |
299 | .fb_copyarea = cfb_copyarea, |
300 | .fb_imageblit = cfb_imageblit, |
301 | }; |
302 | |
303 | struct pci_dev *vga_default_device(void) |
304 | { |
305 | return default_vga; |
306 | } |
307 | |
308 | EXPORT_SYMBOL_GPL(vga_default_device); |
309 | |
310 | void vga_set_default_device(struct pci_dev *pdev) |
311 | { |
312 | default_vga = pdev; |
313 | } |
314 | |
315 | static int __init efifb_setup(char *options) |
316 | { |
317 | char *this_opt; |
318 | int i; |
319 | struct pci_dev *dev = NULL; |
320 | |
321 | if (options && *options) { |
322 | while ((this_opt = strsep(&options, ",")) != NULL) { |
323 | if (!*this_opt) continue; |
324 | |
325 | for (i = 0; i < M_UNKNOWN; i++) { |
326 | if (!strcmp(this_opt, dmi_list[i].optname) && |
327 | dmi_list[i].base != 0) { |
328 | screen_info.lfb_base = dmi_list[i].base; |
329 | screen_info.lfb_linelength = dmi_list[i].stride; |
330 | screen_info.lfb_width = dmi_list[i].width; |
331 | screen_info.lfb_height = dmi_list[i].height; |
332 | } |
333 | } |
334 | if (!strncmp(this_opt, "base:", 5)) |
335 | screen_info.lfb_base = simple_strtoul(this_opt+5, NULL, 0); |
336 | else if (!strncmp(this_opt, "stride:", 7)) |
337 | screen_info.lfb_linelength = simple_strtoul(this_opt+7, NULL, 0) * 4; |
338 | else if (!strncmp(this_opt, "height:", 7)) |
339 | screen_info.lfb_height = simple_strtoul(this_opt+7, NULL, 0); |
340 | else if (!strncmp(this_opt, "width:", 6)) |
341 | screen_info.lfb_width = simple_strtoul(this_opt+6, NULL, 0); |
342 | } |
343 | } |
344 | |
345 | for_each_pci_dev(dev) { |
346 | int i; |
347 | |
348 | if ((dev->class >> 8) != PCI_CLASS_DISPLAY_VGA) |
349 | continue; |
350 | |
351 | for (i=0; i < DEVICE_COUNT_RESOURCE; i++) { |
352 | resource_size_t start, end; |
353 | |
354 | if (!(pci_resource_flags(dev, i) & IORESOURCE_MEM)) |
355 | continue; |
356 | |
357 | start = pci_resource_start(dev, i); |
358 | end = pci_resource_end(dev, i); |
359 | |
360 | if (!start || !end) |
361 | continue; |
362 | |
363 | if (screen_info.lfb_base >= start && |
364 | (screen_info.lfb_base + screen_info.lfb_size) < end) |
365 | default_vga = dev; |
366 | } |
367 | } |
368 | |
369 | return 0; |
370 | } |
371 | |
372 | static int __init efifb_probe(struct platform_device *dev) |
373 | { |
374 | struct fb_info *info; |
375 | int err; |
376 | unsigned int size_vmode; |
377 | unsigned int size_remap; |
378 | unsigned int size_total; |
379 | |
380 | if (!screen_info.lfb_depth) |
381 | screen_info.lfb_depth = 32; |
382 | if (!screen_info.pages) |
383 | screen_info.pages = 1; |
384 | if (!screen_info.lfb_base) { |
385 | printk(KERN_DEBUG "efifb: invalid framebuffer address\n"); |
386 | return -ENODEV; |
387 | } |
388 | printk(KERN_INFO "efifb: probing for efifb\n"); |
389 | |
390 | /* just assume they're all unset if any are */ |
391 | if (!screen_info.blue_size) { |
392 | screen_info.blue_size = 8; |
393 | screen_info.blue_pos = 0; |
394 | screen_info.green_size = 8; |
395 | screen_info.green_pos = 8; |
396 | screen_info.red_size = 8; |
397 | screen_info.red_pos = 16; |
398 | screen_info.rsvd_size = 8; |
399 | screen_info.rsvd_pos = 24; |
400 | } |
401 | |
402 | efifb_fix.smem_start = screen_info.lfb_base; |
403 | efifb_defined.bits_per_pixel = screen_info.lfb_depth; |
404 | efifb_defined.xres = screen_info.lfb_width; |
405 | efifb_defined.yres = screen_info.lfb_height; |
406 | efifb_fix.line_length = screen_info.lfb_linelength; |
407 | |
408 | /* size_vmode -- that is the amount of memory needed for the |
409 | * used video mode, i.e. the minimum amount of |
410 | * memory we need. */ |
411 | size_vmode = efifb_defined.yres * efifb_fix.line_length; |
412 | |
413 | /* size_total -- all video memory we have. Used for |
414 | * entries, ressource allocation and bounds |
415 | * checking. */ |
416 | size_total = screen_info.lfb_size; |
417 | if (size_total < size_vmode) |
418 | size_total = size_vmode; |
419 | |
420 | /* size_remap -- the amount of video memory we are going to |
421 | * use for efifb. With modern cards it is no |
422 | * option to simply use size_total as that |
423 | * wastes plenty of kernel address space. */ |
424 | size_remap = size_vmode * 2; |
425 | if (size_remap > size_total) |
426 | size_remap = size_total; |
427 | if (size_remap % PAGE_SIZE) |
428 | size_remap += PAGE_SIZE - (size_remap % PAGE_SIZE); |
429 | efifb_fix.smem_len = size_remap; |
430 | |
431 | if (request_mem_region(efifb_fix.smem_start, size_remap, "efifb")) { |
432 | request_mem_succeeded = true; |
433 | } else { |
434 | /* We cannot make this fatal. Sometimes this comes from magic |
435 | spaces our resource handlers simply don't know about */ |
436 | printk(KERN_WARNING |
437 | "efifb: cannot reserve video memory at 0x%lx\n", |
438 | efifb_fix.smem_start); |
439 | } |
440 | |
441 | info = framebuffer_alloc(sizeof(u32) * 16, &dev->dev); |
442 | if (!info) { |
443 | printk(KERN_ERR "efifb: cannot allocate framebuffer\n"); |
444 | err = -ENOMEM; |
445 | goto err_release_mem; |
446 | } |
447 | info->pseudo_palette = info->par; |
448 | info->par = NULL; |
449 | |
450 | info->apertures = alloc_apertures(1); |
451 | if (!info->apertures) { |
452 | err = -ENOMEM; |
453 | goto err_release_fb; |
454 | } |
455 | info->apertures->ranges[0].base = efifb_fix.smem_start; |
456 | info->apertures->ranges[0].size = size_remap; |
457 | |
458 | info->screen_base = ioremap_wc(efifb_fix.smem_start, efifb_fix.smem_len); |
459 | if (!info->screen_base) { |
460 | printk(KERN_ERR "efifb: abort, cannot ioremap video memory " |
461 | "0x%x @ 0x%lx\n", |
462 | efifb_fix.smem_len, efifb_fix.smem_start); |
463 | err = -EIO; |
464 | goto err_release_fb; |
465 | } |
466 | |
467 | printk(KERN_INFO "efifb: framebuffer at 0x%lx, mapped to 0x%p, " |
468 | "using %dk, total %dk\n", |
469 | efifb_fix.smem_start, info->screen_base, |
470 | size_remap/1024, size_total/1024); |
471 | printk(KERN_INFO "efifb: mode is %dx%dx%d, linelength=%d, pages=%d\n", |
472 | efifb_defined.xres, efifb_defined.yres, |
473 | efifb_defined.bits_per_pixel, efifb_fix.line_length, |
474 | screen_info.pages); |
475 | |
476 | efifb_defined.xres_virtual = efifb_defined.xres; |
477 | efifb_defined.yres_virtual = efifb_fix.smem_len / |
478 | efifb_fix.line_length; |
479 | printk(KERN_INFO "efifb: scrolling: redraw\n"); |
480 | efifb_defined.yres_virtual = efifb_defined.yres; |
481 | |
482 | /* some dummy values for timing to make fbset happy */ |
483 | efifb_defined.pixclock = 10000000 / efifb_defined.xres * |
484 | 1000 / efifb_defined.yres; |
485 | efifb_defined.left_margin = (efifb_defined.xres / 8) & 0xf8; |
486 | efifb_defined.hsync_len = (efifb_defined.xres / 8) & 0xf8; |
487 | |
488 | efifb_defined.red.offset = screen_info.red_pos; |
489 | efifb_defined.red.length = screen_info.red_size; |
490 | efifb_defined.green.offset = screen_info.green_pos; |
491 | efifb_defined.green.length = screen_info.green_size; |
492 | efifb_defined.blue.offset = screen_info.blue_pos; |
493 | efifb_defined.blue.length = screen_info.blue_size; |
494 | efifb_defined.transp.offset = screen_info.rsvd_pos; |
495 | efifb_defined.transp.length = screen_info.rsvd_size; |
496 | |
497 | printk(KERN_INFO "efifb: %s: " |
498 | "size=%d:%d:%d:%d, shift=%d:%d:%d:%d\n", |
499 | "Truecolor", |
500 | screen_info.rsvd_size, |
501 | screen_info.red_size, |
502 | screen_info.green_size, |
503 | screen_info.blue_size, |
504 | screen_info.rsvd_pos, |
505 | screen_info.red_pos, |
506 | screen_info.green_pos, |
507 | screen_info.blue_pos); |
508 | |
509 | efifb_fix.ypanstep = 0; |
510 | efifb_fix.ywrapstep = 0; |
511 | |
512 | info->fbops = &efifb_ops; |
513 | info->var = efifb_defined; |
514 | info->fix = efifb_fix; |
515 | info->flags = FBINFO_FLAG_DEFAULT | FBINFO_MISC_FIRMWARE; |
516 | |
517 | if ((err = fb_alloc_cmap(&info->cmap, 256, 0)) < 0) { |
518 | printk(KERN_ERR "efifb: cannot allocate colormap\n"); |
519 | goto err_unmap; |
520 | } |
521 | if ((err = register_framebuffer(info)) < 0) { |
522 | printk(KERN_ERR "efifb: cannot register framebuffer\n"); |
523 | goto err_fb_dealoc; |
524 | } |
525 | printk(KERN_INFO "fb%d: %s frame buffer device\n", |
526 | info->node, info->fix.id); |
527 | return 0; |
528 | |
529 | err_fb_dealoc: |
530 | fb_dealloc_cmap(&info->cmap); |
531 | err_unmap: |
532 | iounmap(info->screen_base); |
533 | err_release_fb: |
534 | framebuffer_release(info); |
535 | err_release_mem: |
536 | if (request_mem_succeeded) |
537 | release_mem_region(efifb_fix.smem_start, size_total); |
538 | return err; |
539 | } |
540 | |
541 | static struct platform_driver efifb_driver = { |
542 | .driver = { |
543 | .name = "efifb", |
544 | }, |
545 | }; |
546 | |
547 | static struct platform_device efifb_device = { |
548 | .name = "efifb", |
549 | }; |
550 | |
551 | static int __init efifb_init(void) |
552 | { |
553 | int ret; |
554 | char *option = NULL; |
555 | |
556 | if (screen_info.orig_video_isVGA != VIDEO_TYPE_EFI || |
557 | !(screen_info.capabilities & VIDEO_CAPABILITY_SKIP_QUIRKS)) |
558 | dmi_check_system(dmi_system_table); |
559 | |
560 | if (screen_info.orig_video_isVGA != VIDEO_TYPE_EFI) |
561 | return -ENODEV; |
562 | |
563 | if (fb_get_options("efifb", &option)) |
564 | return -ENODEV; |
565 | efifb_setup(option); |
566 | |
567 | /* We don't get linelength from UGA Draw Protocol, only from |
568 | * EFI Graphics Protocol. So if it's not in DMI, and it's not |
569 | * passed in from the user, we really can't use the framebuffer. |
570 | */ |
571 | if (!screen_info.lfb_linelength) |
572 | return -ENODEV; |
573 | |
574 | ret = platform_device_register(&efifb_device); |
575 | if (ret) |
576 | return ret; |
577 | |
578 | /* |
579 | * This is not just an optimization. We will interfere |
580 | * with a real driver if we get reprobed, so don't allow |
581 | * it. |
582 | */ |
583 | ret = platform_driver_probe(&efifb_driver, efifb_probe); |
584 | if (ret) { |
585 | platform_device_unregister(&efifb_device); |
586 | return ret; |
587 | } |
588 | |
589 | return ret; |
590 | } |
591 | module_init(efifb_init); |
592 | |
593 | MODULE_LICENSE("GPL"); |
594 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9