Commit | Line | Data |
---|---|---|
7c83172b HY |
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> | |
7c08c9ae | 15 | #include <linux/dmi.h> |
85a00d9b | 16 | #include <linux/pci.h> |
7c83172b HY |
17 | #include <video/vga.h> |
18 | ||
ec81c9cc | 19 | static struct fb_var_screeninfo efifb_defined __devinitdata = { |
7c83172b HY |
20 | .activate = FB_ACTIVATE_NOW, |
21 | .height = -1, | |
22 | .width = -1, | |
23 | .right_margin = 32, | |
24 | .upper_margin = 16, | |
25 | .lower_margin = 4, | |
26 | .vsync_len = 4, | |
27 | .vmode = FB_VMODE_NONINTERLACED, | |
28 | }; | |
29 | ||
ec81c9cc | 30 | static struct fb_fix_screeninfo efifb_fix __devinitdata = { |
7c83172b HY |
31 | .id = "EFI VGA", |
32 | .type = FB_TYPE_PACKED_PIXELS, | |
33 | .accel = FB_ACCEL_NONE, | |
34 | .visual = FB_VISUAL_TRUECOLOR, | |
35 | }; | |
36 | ||
7c08c9ae PJ |
37 | enum { |
38 | M_I17, /* 17-Inch iMac */ | |
39 | M_I20, /* 20-Inch iMac */ | |
40 | M_I20_SR, /* 20-Inch iMac (Santa Rosa) */ | |
41 | M_I24, /* 24-Inch iMac */ | |
a5757c2a LM |
42 | M_I24_8_1, /* 24-Inch iMac, 8,1th gen */ |
43 | M_I24_10_1, /* 24-Inch iMac, 10,1th gen */ | |
44 | M_I27_11_1, /* 27-Inch iMac, 11,1th gen */ | |
7c08c9ae | 45 | M_MINI, /* Mac Mini */ |
a5757c2a LM |
46 | M_MINI_3_1, /* Mac Mini, 3,1th gen */ |
47 | M_MINI_4_1, /* Mac Mini, 4,1th gen */ | |
7c08c9ae PJ |
48 | M_MB, /* MacBook */ |
49 | M_MB_2, /* MacBook, 2nd rev. */ | |
50 | M_MB_3, /* MacBook, 3rd rev. */ | |
a5757c2a LM |
51 | M_MB_5_1, /* MacBook, 5th rev. */ |
52 | M_MB_6_1, /* MacBook, 6th rev. */ | |
53 | M_MB_7_1, /* MacBook, 7th rev. */ | |
7c08c9ae PJ |
54 | M_MB_SR, /* MacBook, 2nd gen, (Santa Rosa) */ |
55 | M_MBA, /* MacBook Air */ | |
56 | M_MBP, /* MacBook Pro */ | |
57 | M_MBP_2, /* MacBook Pro 2nd gen */ | |
a5757c2a | 58 | M_MBP_2_2, /* MacBook Pro 2,2nd gen */ |
7c08c9ae PJ |
59 | M_MBP_SR, /* MacBook Pro (Santa Rosa) */ |
60 | M_MBP_4, /* MacBook Pro, 4th gen */ | |
8a3bdfe6 | 61 | M_MBP_5_1, /* MacBook Pro, 5,1th gen */ |
a5757c2a LM |
62 | M_MBP_5_2, /* MacBook Pro, 5,2th gen */ |
63 | M_MBP_5_3, /* MacBook Pro, 5,3rd gen */ | |
64 | M_MBP_6_1, /* MacBook Pro, 6,1th gen */ | |
65 | M_MBP_6_2, /* MacBook Pro, 6,2th gen */ | |
66 | M_MBP_7_1, /* MacBook Pro, 7,1th gen */ | |
7c08c9ae PJ |
67 | M_UNKNOWN /* placeholder */ |
68 | }; | |
69 | ||
70 | static struct efifb_dmi_info { | |
71 | char *optname; | |
72 | unsigned long base; | |
73 | int stride; | |
74 | int width; | |
75 | int height; | |
ec81c9cc | 76 | } dmi_list[] __initdata = { |
7c08c9ae PJ |
77 | [M_I17] = { "i17", 0x80010000, 1472 * 4, 1440, 900 }, |
78 | [M_I20] = { "i20", 0x80010000, 1728 * 4, 1680, 1050 }, /* guess */ | |
79 | [M_I20_SR] = { "imac7", 0x40010000, 1728 * 4, 1680, 1050 }, | |
80 | [M_I24] = { "i24", 0x80010000, 2048 * 4, 1920, 1200 }, /* guess */ | |
a5757c2a LM |
81 | [M_I24_8_1] = { "imac8", 0xc0060000, 2048 * 4, 1920, 1200 }, |
82 | [M_I24_10_1] = { "imac10", 0xc0010000, 2048 * 4, 1920, 1080 }, | |
83 | [M_I27_11_1] = { "imac11", 0xc0010000, 2560 * 4, 2560, 1440 }, | |
7c08c9ae | 84 | [M_MINI]= { "mini", 0x80000000, 2048 * 4, 1024, 768 }, |
a5757c2a LM |
85 | [M_MINI_3_1] = { "mini31", 0x40010000, 1024 * 4, 1024, 768 }, |
86 | [M_MINI_4_1] = { "mini41", 0xc0010000, 2048 * 4, 1920, 1200 }, | |
7c08c9ae | 87 | [M_MB] = { "macbook", 0x80000000, 2048 * 4, 1280, 800 }, |
a5757c2a LM |
88 | [M_MB_5_1] = { "macbook51", 0x80010000, 2048 * 4, 1280, 800 }, |
89 | [M_MB_6_1] = { "macbook61", 0x80010000, 2048 * 4, 1280, 800 }, | |
90 | [M_MB_7_1] = { "macbook71", 0x80010000, 2048 * 4, 1280, 800 }, | |
7c08c9ae PJ |
91 | [M_MBA] = { "mba", 0x80000000, 2048 * 4, 1280, 800 }, |
92 | [M_MBP] = { "mbp", 0x80010000, 1472 * 4, 1440, 900 }, | |
93 | [M_MBP_2] = { "mbp2", 0, 0, 0, 0 }, /* placeholder */ | |
a5757c2a | 94 | [M_MBP_2_2] = { "mbp22", 0x80010000, 1472 * 4, 1440, 900 }, |
7c08c9ae PJ |
95 | [M_MBP_SR] = { "mbp3", 0x80030000, 2048 * 4, 1440, 900 }, |
96 | [M_MBP_4] = { "mbp4", 0xc0060000, 2048 * 4, 1920, 1200 }, | |
8a3bdfe6 | 97 | [M_MBP_5_1] = { "mbp51", 0xc0010000, 2048 * 4, 1440, 900 }, |
a5757c2a LM |
98 | [M_MBP_5_2] = { "mbp52", 0xc0010000, 2048 * 4, 1920, 1200 }, |
99 | [M_MBP_5_3] = { "mbp53", 0xd0010000, 2048 * 4, 1440, 900 }, | |
100 | [M_MBP_6_1] = { "mbp61", 0x90030000, 2048 * 4, 1920, 1200 }, | |
101 | [M_MBP_6_2] = { "mbp62", 0x90030000, 2048 * 4, 1680, 1050 }, | |
102 | [M_MBP_7_1] = { "mbp71", 0xc0010000, 2048 * 4, 1280, 800 }, | |
7c08c9ae PJ |
103 | [M_UNKNOWN] = { NULL, 0, 0, 0, 0 } |
104 | }; | |
105 | ||
106 | static int set_system(const struct dmi_system_id *id); | |
107 | ||
108 | #define EFIFB_DMI_SYSTEM_ID(vendor, name, enumid) \ | |
109 | { set_system, name, { \ | |
110 | DMI_MATCH(DMI_BIOS_VENDOR, vendor), \ | |
111 | DMI_MATCH(DMI_PRODUCT_NAME, name) }, \ | |
112 | &dmi_list[enumid] } | |
113 | ||
ec81c9cc | 114 | static const struct dmi_system_id dmi_system_table[] __initconst = { |
7c08c9ae PJ |
115 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac4,1", M_I17), |
116 | /* At least one of these two will be right; maybe both? */ | |
117 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac5,1", M_I20), | |
118 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac5,1", M_I20), | |
119 | /* At least one of these two will be right; maybe both? */ | |
120 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac6,1", M_I24), | |
121 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac6,1", M_I24), | |
122 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac7,1", M_I20_SR), | |
a5757c2a LM |
123 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac8,1", M_I24_8_1), |
124 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac10,1", M_I24_10_1), | |
125 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac11,1", M_I27_11_1), | |
7c08c9ae | 126 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "Macmini1,1", M_MINI), |
a5757c2a LM |
127 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "Macmini3,1", M_MINI_3_1), |
128 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "Macmini4,1", M_MINI_4_1), | |
7c08c9ae PJ |
129 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook1,1", M_MB), |
130 | /* At least one of these two will be right; maybe both? */ | |
131 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook2,1", M_MB), | |
132 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook2,1", M_MB), | |
133 | /* At least one of these two will be right; maybe both? */ | |
134 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook3,1", M_MB), | |
135 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook3,1", M_MB), | |
136 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook4,1", M_MB), | |
a5757c2a LM |
137 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook5,1", M_MB_5_1), |
138 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook6,1", M_MB_6_1), | |
139 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook7,1", M_MB_7_1), | |
7c08c9ae PJ |
140 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookAir1,1", M_MBA), |
141 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro1,1", M_MBP), | |
142 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro2,1", M_MBP_2), | |
a5757c2a | 143 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro2,2", M_MBP_2_2), |
7c08c9ae PJ |
144 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro2,1", M_MBP_2), |
145 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro3,1", M_MBP_SR), | |
146 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro3,1", M_MBP_SR), | |
147 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro4,1", M_MBP_4), | |
8a3bdfe6 | 148 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,1", M_MBP_5_1), |
a5757c2a LM |
149 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,2", M_MBP_5_2), |
150 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,3", M_MBP_5_3), | |
151 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro6,1", M_MBP_6_1), | |
152 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro6,2", M_MBP_6_2), | |
153 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro7,1", M_MBP_7_1), | |
7c08c9ae PJ |
154 | {}, |
155 | }; | |
156 | ||
157 | static int set_system(const struct dmi_system_id *id) | |
158 | { | |
159 | struct efifb_dmi_info *info = id->driver_data; | |
160 | if (info->base == 0) | |
85a00d9b | 161 | return 0; |
7c08c9ae PJ |
162 | |
163 | printk(KERN_INFO "efifb: dmi detected %s - framebuffer at %p " | |
164 | "(%dx%d, stride %d)\n", id->ident, | |
165 | (void *)info->base, info->width, info->height, | |
166 | info->stride); | |
167 | ||
168 | /* Trust the bootloader over the DMI tables */ | |
85a00d9b PJ |
169 | if (screen_info.lfb_base == 0) { |
170 | #if defined(CONFIG_PCI) | |
171 | struct pci_dev *dev = NULL; | |
172 | int found_bar = 0; | |
173 | #endif | |
7c08c9ae | 174 | screen_info.lfb_base = info->base; |
7c08c9ae | 175 | |
85a00d9b PJ |
176 | #if defined(CONFIG_PCI) |
177 | /* make sure that the address in the table is actually on a | |
178 | * VGA device's PCI BAR */ | |
179 | ||
180 | for_each_pci_dev(dev) { | |
181 | int i; | |
182 | if ((dev->class >> 8) != PCI_CLASS_DISPLAY_VGA) | |
183 | continue; | |
184 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { | |
185 | resource_size_t start, end; | |
186 | ||
187 | start = pci_resource_start(dev, i); | |
188 | if (start == 0) | |
189 | break; | |
190 | end = pci_resource_end(dev, i); | |
191 | if (screen_info.lfb_base >= start && | |
192 | screen_info.lfb_base < end) { | |
193 | found_bar = 1; | |
194 | } | |
195 | } | |
196 | } | |
197 | if (!found_bar) | |
198 | screen_info.lfb_base = 0; | |
199 | #endif | |
200 | } | |
201 | if (screen_info.lfb_base) { | |
202 | if (screen_info.lfb_linelength == 0) | |
203 | screen_info.lfb_linelength = info->stride; | |
204 | if (screen_info.lfb_width == 0) | |
205 | screen_info.lfb_width = info->width; | |
206 | if (screen_info.lfb_height == 0) | |
207 | screen_info.lfb_height = info->height; | |
208 | if (screen_info.orig_video_isVGA == 0) | |
209 | screen_info.orig_video_isVGA = VIDEO_TYPE_EFI; | |
210 | } else { | |
211 | screen_info.lfb_linelength = 0; | |
212 | screen_info.lfb_width = 0; | |
213 | screen_info.lfb_height = 0; | |
214 | screen_info.orig_video_isVGA = 0; | |
215 | return 0; | |
216 | } | |
217 | return 1; | |
7c08c9ae PJ |
218 | } |
219 | ||
7c83172b HY |
220 | static int efifb_setcolreg(unsigned regno, unsigned red, unsigned green, |
221 | unsigned blue, unsigned transp, | |
222 | struct fb_info *info) | |
223 | { | |
224 | /* | |
225 | * Set a single color register. The values supplied are | |
226 | * already rounded down to the hardware's capabilities | |
227 | * (according to the entries in the `var' structure). Return | |
228 | * != 0 for invalid regno. | |
229 | */ | |
230 | ||
231 | if (regno >= info->cmap.len) | |
232 | return 1; | |
233 | ||
234 | if (regno < 16) { | |
235 | red >>= 8; | |
236 | green >>= 8; | |
237 | blue >>= 8; | |
238 | ((u32 *)(info->pseudo_palette))[regno] = | |
239 | (red << info->var.red.offset) | | |
240 | (green << info->var.green.offset) | | |
241 | (blue << info->var.blue.offset); | |
242 | } | |
243 | return 0; | |
244 | } | |
245 | ||
89f3f219 MS |
246 | static void efifb_destroy(struct fb_info *info) |
247 | { | |
248 | if (info->screen_base) | |
249 | iounmap(info->screen_base); | |
1471ca9a | 250 | release_mem_region(info->apertures->ranges[0].base, info->apertures->ranges[0].size); |
89f3f219 MS |
251 | framebuffer_release(info); |
252 | } | |
253 | ||
7c83172b HY |
254 | static struct fb_ops efifb_ops = { |
255 | .owner = THIS_MODULE, | |
89f3f219 | 256 | .fb_destroy = efifb_destroy, |
7c83172b HY |
257 | .fb_setcolreg = efifb_setcolreg, |
258 | .fb_fillrect = cfb_fillrect, | |
259 | .fb_copyarea = cfb_copyarea, | |
260 | .fb_imageblit = cfb_imageblit, | |
261 | }; | |
262 | ||
7c08c9ae PJ |
263 | static int __init efifb_setup(char *options) |
264 | { | |
265 | char *this_opt; | |
266 | int i; | |
267 | ||
268 | if (!options || !*options) | |
269 | return 0; | |
270 | ||
271 | while ((this_opt = strsep(&options, ",")) != NULL) { | |
272 | if (!*this_opt) continue; | |
273 | ||
274 | for (i = 0; i < M_UNKNOWN; i++) { | |
275 | if (!strcmp(this_opt, dmi_list[i].optname) && | |
276 | dmi_list[i].base != 0) { | |
277 | screen_info.lfb_base = dmi_list[i].base; | |
278 | screen_info.lfb_linelength = dmi_list[i].stride; | |
279 | screen_info.lfb_width = dmi_list[i].width; | |
280 | screen_info.lfb_height = dmi_list[i].height; | |
281 | } | |
282 | } | |
283 | if (!strncmp(this_opt, "base:", 5)) | |
284 | screen_info.lfb_base = simple_strtoul(this_opt+5, NULL, 0); | |
285 | else if (!strncmp(this_opt, "stride:", 7)) | |
286 | screen_info.lfb_linelength = simple_strtoul(this_opt+7, NULL, 0) * 4; | |
287 | else if (!strncmp(this_opt, "height:", 7)) | |
288 | screen_info.lfb_height = simple_strtoul(this_opt+7, NULL, 0); | |
289 | else if (!strncmp(this_opt, "width:", 6)) | |
290 | screen_info.lfb_width = simple_strtoul(this_opt+6, NULL, 0); | |
291 | } | |
292 | return 0; | |
293 | } | |
294 | ||
c2e13037 | 295 | static int __devinit efifb_probe(struct platform_device *dev) |
7c83172b HY |
296 | { |
297 | struct fb_info *info; | |
298 | int err; | |
299 | unsigned int size_vmode; | |
300 | unsigned int size_remap; | |
301 | unsigned int size_total; | |
7c08c9ae PJ |
302 | int request_succeeded = 0; |
303 | ||
7c08c9ae PJ |
304 | if (!screen_info.lfb_depth) |
305 | screen_info.lfb_depth = 32; | |
306 | if (!screen_info.pages) | |
307 | screen_info.pages = 1; | |
133bb070 MG |
308 | if (!screen_info.lfb_base) { |
309 | printk(KERN_DEBUG "efifb: invalid framebuffer address\n"); | |
310 | return -ENODEV; | |
311 | } | |
312 | printk(KERN_INFO "efifb: probing for efifb\n"); | |
7c08c9ae PJ |
313 | |
314 | /* just assume they're all unset if any are */ | |
315 | if (!screen_info.blue_size) { | |
316 | screen_info.blue_size = 8; | |
317 | screen_info.blue_pos = 0; | |
318 | screen_info.green_size = 8; | |
319 | screen_info.green_pos = 8; | |
320 | screen_info.red_size = 8; | |
321 | screen_info.red_pos = 16; | |
322 | screen_info.rsvd_size = 8; | |
323 | screen_info.rsvd_pos = 24; | |
324 | } | |
7c83172b HY |
325 | |
326 | efifb_fix.smem_start = screen_info.lfb_base; | |
327 | efifb_defined.bits_per_pixel = screen_info.lfb_depth; | |
328 | efifb_defined.xres = screen_info.lfb_width; | |
329 | efifb_defined.yres = screen_info.lfb_height; | |
330 | efifb_fix.line_length = screen_info.lfb_linelength; | |
331 | ||
332 | /* size_vmode -- that is the amount of memory needed for the | |
333 | * used video mode, i.e. the minimum amount of | |
334 | * memory we need. */ | |
335 | size_vmode = efifb_defined.yres * efifb_fix.line_length; | |
336 | ||
337 | /* size_total -- all video memory we have. Used for | |
338 | * entries, ressource allocation and bounds | |
339 | * checking. */ | |
340 | size_total = screen_info.lfb_size; | |
341 | if (size_total < size_vmode) | |
342 | size_total = size_vmode; | |
343 | ||
344 | /* size_remap -- the amount of video memory we are going to | |
345 | * use for efifb. With modern cards it is no | |
346 | * option to simply use size_total as that | |
347 | * wastes plenty of kernel address space. */ | |
348 | size_remap = size_vmode * 2; | |
7c83172b HY |
349 | if (size_remap > size_total) |
350 | size_remap = size_total; | |
7c08c9ae PJ |
351 | if (size_remap % PAGE_SIZE) |
352 | size_remap += PAGE_SIZE - (size_remap % PAGE_SIZE); | |
7c83172b HY |
353 | efifb_fix.smem_len = size_remap; |
354 | ||
7c08c9ae PJ |
355 | if (request_mem_region(efifb_fix.smem_start, size_remap, "efifb")) { |
356 | request_succeeded = 1; | |
357 | } else { | |
7c83172b HY |
358 | /* We cannot make this fatal. Sometimes this comes from magic |
359 | spaces our resource handlers simply don't know about */ | |
360 | printk(KERN_WARNING | |
361 | "efifb: cannot reserve video memory at 0x%lx\n", | |
362 | efifb_fix.smem_start); | |
7c08c9ae | 363 | } |
7c83172b HY |
364 | |
365 | info = framebuffer_alloc(sizeof(u32) * 16, &dev->dev); | |
366 | if (!info) { | |
7c08c9ae | 367 | printk(KERN_ERR "efifb: cannot allocate framebuffer\n"); |
7c83172b HY |
368 | err = -ENOMEM; |
369 | goto err_release_mem; | |
370 | } | |
371 | info->pseudo_palette = info->par; | |
372 | info->par = NULL; | |
373 | ||
1471ca9a MS |
374 | info->apertures = alloc_apertures(1); |
375 | if (!info->apertures) { | |
376 | err = -ENOMEM; | |
377 | goto err_release_fb; | |
378 | } | |
379 | info->apertures->ranges[0].base = efifb_fix.smem_start; | |
380 | info->apertures->ranges[0].size = size_remap; | |
4410f391 | 381 | |
7c83172b HY |
382 | info->screen_base = ioremap(efifb_fix.smem_start, efifb_fix.smem_len); |
383 | if (!info->screen_base) { | |
384 | printk(KERN_ERR "efifb: abort, cannot ioremap video memory " | |
385 | "0x%x @ 0x%lx\n", | |
386 | efifb_fix.smem_len, efifb_fix.smem_start); | |
387 | err = -EIO; | |
7c08c9ae | 388 | goto err_release_fb; |
7c83172b HY |
389 | } |
390 | ||
391 | printk(KERN_INFO "efifb: framebuffer at 0x%lx, mapped to 0x%p, " | |
392 | "using %dk, total %dk\n", | |
393 | efifb_fix.smem_start, info->screen_base, | |
394 | size_remap/1024, size_total/1024); | |
395 | printk(KERN_INFO "efifb: mode is %dx%dx%d, linelength=%d, pages=%d\n", | |
396 | efifb_defined.xres, efifb_defined.yres, | |
397 | efifb_defined.bits_per_pixel, efifb_fix.line_length, | |
398 | screen_info.pages); | |
399 | ||
400 | efifb_defined.xres_virtual = efifb_defined.xres; | |
401 | efifb_defined.yres_virtual = efifb_fix.smem_len / | |
402 | efifb_fix.line_length; | |
403 | printk(KERN_INFO "efifb: scrolling: redraw\n"); | |
404 | efifb_defined.yres_virtual = efifb_defined.yres; | |
405 | ||
406 | /* some dummy values for timing to make fbset happy */ | |
407 | efifb_defined.pixclock = 10000000 / efifb_defined.xres * | |
408 | 1000 / efifb_defined.yres; | |
409 | efifb_defined.left_margin = (efifb_defined.xres / 8) & 0xf8; | |
410 | efifb_defined.hsync_len = (efifb_defined.xres / 8) & 0xf8; | |
411 | ||
412 | efifb_defined.red.offset = screen_info.red_pos; | |
413 | efifb_defined.red.length = screen_info.red_size; | |
414 | efifb_defined.green.offset = screen_info.green_pos; | |
415 | efifb_defined.green.length = screen_info.green_size; | |
416 | efifb_defined.blue.offset = screen_info.blue_pos; | |
417 | efifb_defined.blue.length = screen_info.blue_size; | |
418 | efifb_defined.transp.offset = screen_info.rsvd_pos; | |
419 | efifb_defined.transp.length = screen_info.rsvd_size; | |
420 | ||
421 | printk(KERN_INFO "efifb: %s: " | |
422 | "size=%d:%d:%d:%d, shift=%d:%d:%d:%d\n", | |
423 | "Truecolor", | |
424 | screen_info.rsvd_size, | |
425 | screen_info.red_size, | |
426 | screen_info.green_size, | |
427 | screen_info.blue_size, | |
428 | screen_info.rsvd_pos, | |
429 | screen_info.red_pos, | |
430 | screen_info.green_pos, | |
431 | screen_info.blue_pos); | |
432 | ||
433 | efifb_fix.ypanstep = 0; | |
434 | efifb_fix.ywrapstep = 0; | |
435 | ||
436 | info->fbops = &efifb_ops; | |
437 | info->var = efifb_defined; | |
438 | info->fix = efifb_fix; | |
4410f391 | 439 | info->flags = FBINFO_FLAG_DEFAULT | FBINFO_MISC_FIRMWARE; |
7c83172b | 440 | |
7c08c9ae PJ |
441 | if ((err = fb_alloc_cmap(&info->cmap, 256, 0)) < 0) { |
442 | printk(KERN_ERR "efifb: cannot allocate colormap\n"); | |
7c83172b HY |
443 | goto err_unmap; |
444 | } | |
7c08c9ae PJ |
445 | if ((err = register_framebuffer(info)) < 0) { |
446 | printk(KERN_ERR "efifb: cannot register framebuffer\n"); | |
7c83172b HY |
447 | goto err_fb_dealoc; |
448 | } | |
449 | printk(KERN_INFO "fb%d: %s frame buffer device\n", | |
7c08c9ae | 450 | info->node, info->fix.id); |
7c83172b HY |
451 | return 0; |
452 | ||
453 | err_fb_dealoc: | |
454 | fb_dealloc_cmap(&info->cmap); | |
455 | err_unmap: | |
456 | iounmap(info->screen_base); | |
7c08c9ae | 457 | err_release_fb: |
7c83172b HY |
458 | framebuffer_release(info); |
459 | err_release_mem: | |
7c08c9ae PJ |
460 | if (request_succeeded) |
461 | release_mem_region(efifb_fix.smem_start, size_total); | |
7c83172b HY |
462 | return err; |
463 | } | |
464 | ||
465 | static struct platform_driver efifb_driver = { | |
466 | .probe = efifb_probe, | |
467 | .driver = { | |
468 | .name = "efifb", | |
469 | }, | |
470 | }; | |
471 | ||
472 | static struct platform_device efifb_device = { | |
473 | .name = "efifb", | |
474 | }; | |
475 | ||
476 | static int __init efifb_init(void) | |
477 | { | |
478 | int ret; | |
7c08c9ae | 479 | char *option = NULL; |
7c83172b | 480 | |
e14a685d BM |
481 | dmi_check_system(dmi_system_table); |
482 | ||
7c83172b HY |
483 | if (screen_info.orig_video_isVGA != VIDEO_TYPE_EFI) |
484 | return -ENODEV; | |
7c08c9ae PJ |
485 | |
486 | if (fb_get_options("efifb", &option)) | |
487 | return -ENODEV; | |
488 | efifb_setup(option); | |
489 | ||
490 | /* We don't get linelength from UGA Draw Protocol, only from | |
491 | * EFI Graphics Protocol. So if it's not in DMI, and it's not | |
492 | * passed in from the user, we really can't use the framebuffer. | |
493 | */ | |
494 | if (!screen_info.lfb_linelength) | |
495 | return -ENODEV; | |
7c83172b HY |
496 | |
497 | ret = platform_driver_register(&efifb_driver); | |
498 | ||
499 | if (!ret) { | |
500 | ret = platform_device_register(&efifb_device); | |
501 | if (ret) | |
502 | platform_driver_unregister(&efifb_driver); | |
503 | } | |
504 | return ret; | |
505 | } | |
506 | module_init(efifb_init); | |
507 | ||
508 | MODULE_LICENSE("GPL"); |