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1da177e4 LT |
1 | /* |
2 | * BRIEF MODULE DESCRIPTION | |
3 | * Au1100 LCD Driver. | |
4 | * | |
5 | * Copyright 2002 MontaVista Software | |
6 | * Author: MontaVista Software, Inc. | |
7 | * ppopov@mvista.com or source@mvista.com | |
8 | * | |
9 | * Copyright 2002 Alchemy Semiconductor | |
10 | * Author: Alchemy Semiconductor | |
11 | * | |
12 | * Based on: | |
13 | * linux/drivers/video/skeletonfb.c -- Skeleton for a frame buffer device | |
14 | * Created 28 Dec 1997 by Geert Uytterhoeven | |
15 | * | |
16 | * This program is free software; you can redistribute it and/or modify it | |
17 | * under the terms of the GNU General Public License as published by the | |
18 | * Free Software Foundation; either version 2 of the License, or (at your | |
19 | * option) any later version. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
22 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
23 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN | |
24 | * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
25 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
26 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF | |
27 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON | |
28 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
29 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
30 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
31 | * | |
32 | * You should have received a copy of the GNU General Public License along | |
33 | * with this program; if not, write to the Free Software Foundation, Inc., | |
34 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
35 | */ | |
36 | ||
37 | #include <linux/module.h> | |
38 | #include <linux/kernel.h> | |
39 | #include <linux/errno.h> | |
40 | #include <linux/string.h> | |
41 | #include <linux/mm.h> | |
42 | #include <linux/tty.h> | |
43 | #include <linux/slab.h> | |
44 | #include <linux/delay.h> | |
45 | #include <linux/fb.h> | |
46 | #include <linux/init.h> | |
47 | #include <linux/pci.h> | |
48 | ||
49 | #include <asm/au1000.h> | |
50 | #include <asm/pb1100.h> | |
51 | #include "au1100fb.h" | |
52 | ||
53 | #include <video/fbcon.h> | |
54 | #include <video/fbcon-mfb.h> | |
55 | #include <video/fbcon-cfb2.h> | |
56 | #include <video/fbcon-cfb4.h> | |
57 | #include <video/fbcon-cfb8.h> | |
58 | #include <video/fbcon-cfb16.h> | |
59 | ||
60 | /* | |
61 | * Sanity check. If this is a new Au1100 based board, search for | |
62 | * the PB1100 ifdefs to make sure you modify the code accordingly. | |
63 | */ | |
64 | #if defined(CONFIG_MIPS_PB1100) || defined(CONFIG_MIPS_DB1100) || defined(CONFIG_MIPS_HYDROGEN3) | |
65 | #else | |
66 | error Unknown Au1100 board | |
67 | #endif | |
68 | ||
69 | #define CMAPSIZE 16 | |
70 | ||
71 | static int my_lcd_index; /* default is zero */ | |
72 | struct known_lcd_panels *p_lcd; | |
73 | AU1100_LCD *p_lcd_reg = (AU1100_LCD *)AU1100_LCD_ADDR; | |
74 | ||
75 | struct au1100fb_info { | |
76 | struct fb_info_gen gen; | |
77 | unsigned long fb_virt_start; | |
78 | unsigned long fb_size; | |
79 | unsigned long fb_phys; | |
80 | int mmaped; | |
81 | int nohwcursor; | |
82 | ||
83 | struct { unsigned red, green, blue, pad; } palette[256]; | |
84 | ||
85 | #if defined(FBCON_HAS_CFB16) | |
86 | u16 fbcon_cmap16[16]; | |
87 | #endif | |
88 | }; | |
89 | ||
90 | ||
91 | struct au1100fb_par { | |
92 | struct fb_var_screeninfo var; | |
93 | ||
94 | int line_length; // in bytes | |
95 | int cmap_len; // color-map length | |
96 | }; | |
97 | ||
98 | ||
99 | static struct au1100fb_info fb_info; | |
100 | static struct au1100fb_par current_par; | |
101 | static struct display disp; | |
102 | ||
103 | int au1100fb_init(void); | |
104 | void au1100fb_setup(char *options, int *ints); | |
105 | static int au1100fb_mmap(struct fb_info *fb, struct file *file, | |
106 | struct vm_area_struct *vma); | |
107 | static int au1100_blank(int blank_mode, struct fb_info_gen *info); | |
108 | static int au1100fb_ioctl(struct inode *inode, struct file *file, u_int cmd, | |
109 | u_long arg, int con, struct fb_info *info); | |
110 | ||
111 | void au1100_nocursor(struct display *p, int mode, int xx, int yy){}; | |
112 | ||
113 | static struct fb_ops au1100fb_ops = { | |
114 | owner: THIS_MODULE, | |
115 | fb_get_fix: fbgen_get_fix, | |
116 | fb_get_var: fbgen_get_var, | |
117 | fb_set_var: fbgen_set_var, | |
118 | fb_get_cmap: fbgen_get_cmap, | |
119 | fb_set_cmap: fbgen_set_cmap, | |
120 | fb_pan_display: fbgen_pan_display, | |
121 | fb_ioctl: au1100fb_ioctl, | |
122 | fb_mmap: au1100fb_mmap, | |
123 | }; | |
124 | ||
125 | static void au1100_detect(void) | |
126 | { | |
127 | /* | |
128 | * This function should detect the current video mode settings | |
129 | * and store it as the default video mode | |
130 | */ | |
131 | ||
132 | /* | |
133 | * Yeh, well, we're not going to change any settings so we're | |
134 | * always stuck with the default ... | |
135 | */ | |
136 | ||
137 | } | |
138 | ||
139 | static int au1100_encode_fix(struct fb_fix_screeninfo *fix, | |
140 | const void *_par, struct fb_info_gen *_info) | |
141 | { | |
142 | struct au1100fb_info *info = (struct au1100fb_info *) _info; | |
143 | struct au1100fb_par *par = (struct au1100fb_par *) _par; | |
144 | struct fb_var_screeninfo *var = &par->var; | |
145 | ||
146 | memset(fix, 0, sizeof(struct fb_fix_screeninfo)); | |
147 | ||
148 | fix->smem_start = info->fb_phys; | |
149 | fix->smem_len = info->fb_size; | |
150 | fix->type = FB_TYPE_PACKED_PIXELS; | |
151 | fix->type_aux = 0; | |
152 | fix->visual = (var->bits_per_pixel == 8) ? | |
153 | FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR; | |
154 | fix->ywrapstep = 0; | |
155 | fix->xpanstep = 1; | |
156 | fix->ypanstep = 1; | |
157 | fix->line_length = current_par.line_length; | |
158 | return 0; | |
159 | } | |
160 | ||
161 | static void set_color_bitfields(struct fb_var_screeninfo *var) | |
162 | { | |
163 | switch (var->bits_per_pixel) { | |
164 | case 8: | |
165 | var->red.offset = 0; | |
166 | var->red.length = 8; | |
167 | var->green.offset = 0; | |
168 | var->green.length = 8; | |
169 | var->blue.offset = 0; | |
170 | var->blue.length = 8; | |
171 | var->transp.offset = 0; | |
172 | var->transp.length = 0; | |
173 | break; | |
174 | case 16: /* RGB 565 */ | |
175 | var->red.offset = 11; | |
176 | var->red.length = 5; | |
177 | var->green.offset = 5; | |
178 | var->green.length = 6; | |
179 | var->blue.offset = 0; | |
180 | var->blue.length = 5; | |
181 | var->transp.offset = 0; | |
182 | var->transp.length = 0; | |
183 | break; | |
184 | } | |
185 | ||
186 | var->red.msb_right = 0; | |
187 | var->green.msb_right = 0; | |
188 | var->blue.msb_right = 0; | |
189 | var->transp.msb_right = 0; | |
190 | } | |
191 | ||
192 | static int au1100_decode_var(const struct fb_var_screeninfo *var, | |
193 | void *_par, struct fb_info_gen *_info) | |
194 | { | |
195 | ||
196 | struct au1100fb_par *par = (struct au1100fb_par *)_par; | |
197 | ||
198 | /* | |
199 | * Don't allow setting any of these yet: xres and yres don't | |
200 | * make sense for LCD panels. | |
201 | */ | |
202 | if (var->xres != p_lcd->xres || | |
203 | var->yres != p_lcd->yres || | |
204 | var->xres != p_lcd->xres || | |
205 | var->yres != p_lcd->yres) { | |
206 | return -EINVAL; | |
207 | } | |
208 | if(var->bits_per_pixel != p_lcd->bpp) { | |
209 | return -EINVAL; | |
210 | } | |
211 | ||
212 | memset(par, 0, sizeof(struct au1100fb_par)); | |
213 | par->var = *var; | |
214 | ||
215 | /* FIXME */ | |
216 | switch (var->bits_per_pixel) { | |
217 | case 8: | |
218 | par->var.bits_per_pixel = 8; | |
219 | break; | |
220 | case 16: | |
221 | par->var.bits_per_pixel = 16; | |
222 | break; | |
223 | default: | |
224 | printk("color depth %d bpp not supported\n", | |
225 | var->bits_per_pixel); | |
226 | return -EINVAL; | |
227 | ||
228 | } | |
229 | set_color_bitfields(&par->var); | |
230 | par->cmap_len = (par->var.bits_per_pixel == 8) ? 256 : 16; | |
231 | return 0; | |
232 | } | |
233 | ||
234 | static int au1100_encode_var(struct fb_var_screeninfo *var, | |
235 | const void *par, struct fb_info_gen *_info) | |
236 | { | |
237 | ||
238 | *var = ((struct au1100fb_par *)par)->var; | |
239 | return 0; | |
240 | } | |
241 | ||
242 | static void | |
243 | au1100_get_par(void *_par, struct fb_info_gen *_info) | |
244 | { | |
245 | *(struct au1100fb_par *)_par = current_par; | |
246 | } | |
247 | ||
248 | static void au1100_set_par(const void *par, struct fb_info_gen *info) | |
249 | { | |
250 | /* nothing to do: we don't change any settings */ | |
251 | } | |
252 | ||
253 | static int au1100_getcolreg(unsigned regno, unsigned *red, unsigned *green, | |
254 | unsigned *blue, unsigned *transp, | |
255 | struct fb_info *info) | |
256 | { | |
257 | ||
258 | struct au1100fb_info* i = (struct au1100fb_info*)info; | |
259 | ||
260 | if (regno > 255) | |
261 | return 1; | |
262 | ||
263 | *red = i->palette[regno].red; | |
264 | *green = i->palette[regno].green; | |
265 | *blue = i->palette[regno].blue; | |
266 | *transp = 0; | |
267 | ||
268 | return 0; | |
269 | } | |
270 | ||
271 | static int au1100_setcolreg(unsigned regno, unsigned red, unsigned green, | |
272 | unsigned blue, unsigned transp, | |
273 | struct fb_info *info) | |
274 | { | |
275 | struct au1100fb_info* i = (struct au1100fb_info *)info; | |
276 | u32 rgbcol; | |
277 | ||
278 | if (regno > 255) | |
279 | return 1; | |
280 | ||
281 | i->palette[regno].red = red; | |
282 | i->palette[regno].green = green; | |
283 | i->palette[regno].blue = blue; | |
284 | ||
285 | switch(p_lcd->bpp) { | |
286 | #ifdef FBCON_HAS_CFB8 | |
287 | case 8: | |
288 | red >>= 10; | |
289 | green >>= 10; | |
290 | blue >>= 10; | |
291 | p_lcd_reg->lcd_pallettebase[regno] = (blue&0x1f) | | |
292 | ((green&0x3f)<<5) | ((red&0x1f)<<11); | |
293 | break; | |
294 | #endif | |
295 | #ifdef FBCON_HAS_CFB16 | |
296 | case 16: | |
297 | i->fbcon_cmap16[regno] = | |
298 | ((red & 0xf800) >> 0) | | |
299 | ((green & 0xfc00) >> 5) | | |
300 | ((blue & 0xf800) >> 11); | |
301 | break; | |
302 | #endif | |
303 | default: | |
304 | break; | |
305 | } | |
306 | ||
307 | return 0; | |
308 | } | |
309 | ||
310 | ||
311 | static int au1100_blank(int blank_mode, struct fb_info_gen *_info) | |
312 | { | |
313 | ||
314 | switch (blank_mode) { | |
315 | case VESA_NO_BLANKING: | |
316 | /* turn on panel */ | |
317 | //printk("turn on panel\n"); | |
318 | #ifdef CONFIG_MIPS_PB1100 | |
319 | p_lcd_reg->lcd_control |= LCD_CONTROL_GO; | |
320 | au_writew(au_readw(PB1100_G_CONTROL) | p_lcd->mode_backlight, | |
321 | PB1100_G_CONTROL); | |
322 | #endif | |
323 | #ifdef CONFIG_MIPS_HYDROGEN3 | |
324 | /* Turn controller & power supply on, GPIO213 */ | |
325 | au_writel(0x20002000, 0xB1700008); | |
326 | au_writel(0x00040000, 0xB1900108); | |
327 | au_writel(0x01000100, 0xB1700008); | |
328 | #endif | |
329 | au_sync(); | |
330 | break; | |
331 | ||
332 | case VESA_VSYNC_SUSPEND: | |
333 | case VESA_HSYNC_SUSPEND: | |
334 | case VESA_POWERDOWN: | |
335 | /* turn off panel */ | |
336 | //printk("turn off panel\n"); | |
337 | #ifdef CONFIG_MIPS_PB1100 | |
338 | au_writew(au_readw(PB1100_G_CONTROL) & ~p_lcd->mode_backlight, | |
339 | PB1100_G_CONTROL); | |
340 | p_lcd_reg->lcd_control &= ~LCD_CONTROL_GO; | |
341 | #endif | |
342 | au_sync(); | |
343 | break; | |
344 | default: | |
345 | break; | |
346 | ||
347 | } | |
348 | return 0; | |
349 | } | |
350 | ||
351 | static void au1100_set_disp(const void *unused, struct display *disp, | |
352 | struct fb_info_gen *info) | |
353 | { | |
354 | disp->screen_base = (char *)fb_info.fb_virt_start; | |
355 | ||
356 | switch (disp->var.bits_per_pixel) { | |
357 | #ifdef FBCON_HAS_CFB8 | |
358 | case 8: | |
359 | disp->dispsw = &fbcon_cfb8; | |
360 | if (fb_info.nohwcursor) | |
361 | fbcon_cfb8.cursor = au1100_nocursor; | |
362 | break; | |
363 | #endif | |
364 | #ifdef FBCON_HAS_CFB16 | |
365 | case 16: | |
366 | disp->dispsw = &fbcon_cfb16; | |
367 | disp->dispsw_data = fb_info.fbcon_cmap16; | |
368 | if (fb_info.nohwcursor) | |
369 | fbcon_cfb16.cursor = au1100_nocursor; | |
370 | break; | |
371 | #endif | |
372 | default: | |
373 | disp->dispsw = &fbcon_dummy; | |
374 | disp->dispsw_data = NULL; | |
375 | break; | |
376 | } | |
377 | } | |
378 | ||
379 | static int | |
380 | au1100fb_mmap(struct fb_info *_fb, | |
381 | struct file *file, | |
382 | struct vm_area_struct *vma) | |
383 | { | |
384 | unsigned int len; | |
385 | unsigned long start=0, off; | |
386 | struct au1100fb_info *fb = (struct au1100fb_info *)_fb; | |
387 | ||
388 | if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) { | |
389 | return -EINVAL; | |
390 | } | |
391 | ||
392 | start = fb_info.fb_phys & PAGE_MASK; | |
393 | len = PAGE_ALIGN((start & ~PAGE_MASK) + fb_info.fb_size); | |
394 | ||
395 | off = vma->vm_pgoff << PAGE_SHIFT; | |
396 | ||
397 | if ((vma->vm_end - vma->vm_start + off) > len) { | |
398 | return -EINVAL; | |
399 | } | |
400 | ||
401 | off += start; | |
402 | vma->vm_pgoff = off >> PAGE_SHIFT; | |
403 | ||
404 | pgprot_val(vma->vm_page_prot) &= ~_CACHE_MASK; | |
405 | //pgprot_val(vma->vm_page_prot) |= _CACHE_CACHABLE_NONCOHERENT; | |
406 | pgprot_val(vma->vm_page_prot) |= (6 << 9); //CCA=6 | |
407 | ||
408 | /* This is an IO map - tell maydump to skip this VMA */ | |
409 | vma->vm_flags |= VM_IO; | |
410 | ||
411 | if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT, | |
412 | vma->vm_end - vma->vm_start, | |
413 | vma->vm_page_prot)) { | |
414 | return -EAGAIN; | |
415 | } | |
416 | ||
417 | fb->mmaped = 1; | |
418 | return 0; | |
419 | } | |
420 | ||
421 | int au1100_pan_display(const struct fb_var_screeninfo *var, | |
422 | struct fb_info_gen *info) | |
423 | { | |
424 | return 0; | |
425 | } | |
426 | ||
427 | static int au1100fb_ioctl(struct inode *inode, struct file *file, u_int cmd, | |
428 | u_long arg, int con, struct fb_info *info) | |
429 | { | |
430 | /* nothing to do yet */ | |
431 | return -EINVAL; | |
432 | } | |
433 | ||
434 | static struct fbgen_hwswitch au1100_switch = { | |
435 | au1100_detect, | |
436 | au1100_encode_fix, | |
437 | au1100_decode_var, | |
438 | au1100_encode_var, | |
439 | au1100_get_par, | |
440 | au1100_set_par, | |
441 | au1100_getcolreg, | |
442 | au1100_setcolreg, | |
443 | au1100_pan_display, | |
444 | au1100_blank, | |
445 | au1100_set_disp | |
446 | }; | |
447 | ||
448 | ||
449 | int au1100_setmode(void) | |
450 | { | |
451 | int words; | |
452 | ||
453 | /* FIXME Need to accomodate for swivel mode and 12bpp, <8bpp*/ | |
454 | switch (p_lcd->mode_control & LCD_CONTROL_SM) | |
455 | { | |
456 | case LCD_CONTROL_SM_0: | |
457 | case LCD_CONTROL_SM_180: | |
458 | words = (p_lcd->xres * p_lcd->yres * p_lcd->bpp) / 32; | |
459 | break; | |
460 | case LCD_CONTROL_SM_90: | |
461 | case LCD_CONTROL_SM_270: | |
462 | /* is this correct? */ | |
463 | words = (p_lcd->xres * p_lcd->bpp) / 8; | |
464 | break; | |
465 | default: | |
466 | printk("mode_control reg not initialized\n"); | |
467 | return -EINVAL; | |
468 | } | |
469 | ||
470 | /* | |
471 | * Setup LCD controller | |
472 | */ | |
473 | ||
474 | p_lcd_reg->lcd_control = p_lcd->mode_control; | |
475 | p_lcd_reg->lcd_intstatus = 0; | |
476 | p_lcd_reg->lcd_intenable = 0; | |
477 | p_lcd_reg->lcd_horztiming = p_lcd->mode_horztiming; | |
478 | p_lcd_reg->lcd_verttiming = p_lcd->mode_verttiming; | |
479 | p_lcd_reg->lcd_clkcontrol = p_lcd->mode_clkcontrol; | |
480 | p_lcd_reg->lcd_words = words - 1; | |
481 | p_lcd_reg->lcd_dmaaddr0 = fb_info.fb_phys; | |
482 | ||
483 | /* turn on panel */ | |
484 | #ifdef CONFIG_MIPS_PB1100 | |
485 | au_writew(au_readw(PB1100_G_CONTROL) | p_lcd->mode_backlight, | |
486 | PB1100_G_CONTROL); | |
487 | #endif | |
488 | #ifdef CONFIG_MIPS_HYDROGEN3 | |
489 | /* Turn controller & power supply on, GPIO213 */ | |
490 | au_writel(0x20002000, 0xB1700008); | |
491 | au_writel(0x00040000, 0xB1900108); | |
492 | au_writel(0x01000100, 0xB1700008); | |
493 | #endif | |
494 | ||
495 | p_lcd_reg->lcd_control |= LCD_CONTROL_GO; | |
496 | ||
497 | return 0; | |
498 | } | |
499 | ||
500 | ||
501 | int __init au1100fb_init(void) | |
502 | { | |
503 | uint32 sys_clksrc; | |
504 | unsigned long page; | |
505 | ||
506 | /* | |
507 | * Get the panel information/display mode and update the registry | |
508 | */ | |
509 | p_lcd = &panels[my_lcd_index]; | |
510 | ||
511 | switch (p_lcd->mode_control & LCD_CONTROL_SM) | |
512 | { | |
513 | case LCD_CONTROL_SM_0: | |
514 | case LCD_CONTROL_SM_180: | |
515 | p_lcd->xres = | |
516 | (p_lcd->mode_horztiming & LCD_HORZTIMING_PPL) + 1; | |
517 | p_lcd->yres = | |
518 | (p_lcd->mode_verttiming & LCD_VERTTIMING_LPP) + 1; | |
519 | break; | |
520 | case LCD_CONTROL_SM_90: | |
521 | case LCD_CONTROL_SM_270: | |
522 | p_lcd->yres = | |
523 | (p_lcd->mode_horztiming & LCD_HORZTIMING_PPL) + 1; | |
524 | p_lcd->xres = | |
525 | (p_lcd->mode_verttiming & LCD_VERTTIMING_LPP) + 1; | |
526 | break; | |
527 | } | |
528 | ||
529 | /* | |
530 | * Panel dimensions x bpp must be divisible by 32 | |
531 | */ | |
532 | if (((p_lcd->yres * p_lcd->bpp) % 32) != 0) | |
533 | printk("VERT %% 32\n"); | |
534 | if (((p_lcd->xres * p_lcd->bpp) % 32) != 0) | |
535 | printk("HORZ %% 32\n"); | |
536 | ||
537 | /* | |
538 | * Allocate LCD framebuffer from system memory | |
539 | */ | |
540 | fb_info.fb_size = (p_lcd->xres * p_lcd->yres * p_lcd->bpp) / 8; | |
541 | ||
542 | current_par.var.xres = p_lcd->xres; | |
543 | current_par.var.xres_virtual = p_lcd->xres; | |
544 | current_par.var.yres = p_lcd->yres; | |
545 | current_par.var.yres_virtual = p_lcd->yres; | |
546 | current_par.var.bits_per_pixel = p_lcd->bpp; | |
547 | ||
548 | /* FIX!!! only works for 8/16 bpp */ | |
549 | current_par.line_length = p_lcd->xres * p_lcd->bpp / 8; /* in bytes */ | |
550 | fb_info.fb_virt_start = (unsigned long ) | |
551 | __get_free_pages(GFP_ATOMIC | GFP_DMA, | |
552 | get_order(fb_info.fb_size + 0x1000)); | |
553 | if (!fb_info.fb_virt_start) { | |
554 | printk("Unable to allocate fb memory\n"); | |
555 | return -ENOMEM; | |
556 | } | |
557 | fb_info.fb_phys = virt_to_bus((void *)fb_info.fb_virt_start); | |
558 | ||
559 | /* | |
560 | * Set page reserved so that mmap will work. This is necessary | |
561 | * since we'll be remapping normal memory. | |
562 | */ | |
563 | for (page = fb_info.fb_virt_start; | |
564 | page < PAGE_ALIGN(fb_info.fb_virt_start + fb_info.fb_size); | |
565 | page += PAGE_SIZE) { | |
566 | SetPageReserved(virt_to_page(page)); | |
567 | } | |
568 | ||
569 | memset((void *)fb_info.fb_virt_start, 0, fb_info.fb_size); | |
570 | ||
571 | /* set freqctrl now to allow more time to stabilize */ | |
572 | /* zero-out out LCD bits */ | |
573 | sys_clksrc = au_readl(SYS_CLKSRC) & ~0x000003e0; | |
574 | sys_clksrc |= p_lcd->mode_toyclksrc; | |
575 | au_writel(sys_clksrc, SYS_CLKSRC); | |
576 | ||
577 | /* FIXME add check to make sure auxpll is what is expected! */ | |
578 | au1100_setmode(); | |
579 | ||
580 | fb_info.gen.parsize = sizeof(struct au1100fb_par); | |
581 | fb_info.gen.fbhw = &au1100_switch; | |
582 | ||
583 | strcpy(fb_info.gen.info.modename, "Au1100 LCD"); | |
584 | fb_info.gen.info.changevar = NULL; | |
585 | fb_info.gen.info.node = -1; | |
586 | ||
587 | fb_info.gen.info.fbops = &au1100fb_ops; | |
588 | fb_info.gen.info.disp = &disp; | |
589 | fb_info.gen.info.switch_con = &fbgen_switch; | |
590 | fb_info.gen.info.updatevar = &fbgen_update_var; | |
591 | fb_info.gen.info.blank = &fbgen_blank; | |
592 | fb_info.gen.info.flags = FBINFO_FLAG_DEFAULT; | |
593 | ||
594 | /* This should give a reasonable default video mode */ | |
595 | fbgen_get_var(&disp.var, -1, &fb_info.gen.info); | |
596 | fbgen_do_set_var(&disp.var, 1, &fb_info.gen); | |
597 | fbgen_set_disp(-1, &fb_info.gen); | |
598 | fbgen_install_cmap(0, &fb_info.gen); | |
599 | if (register_framebuffer(&fb_info.gen.info) < 0) | |
600 | return -EINVAL; | |
601 | printk(KERN_INFO "fb%d: %s frame buffer device\n", | |
602 | GET_FB_IDX(fb_info.gen.info.node), | |
603 | fb_info.gen.info.modename); | |
604 | ||
605 | return 0; | |
606 | } | |
607 | ||
608 | ||
609 | void au1100fb_cleanup(struct fb_info *info) | |
610 | { | |
611 | unregister_framebuffer(info); | |
612 | } | |
613 | ||
614 | ||
615 | void au1100fb_setup(char *options, int *ints) | |
616 | { | |
617 | char* this_opt; | |
618 | int i; | |
619 | int num_panels = sizeof(panels)/sizeof(struct known_lcd_panels); | |
620 | ||
621 | ||
622 | if (!options || !*options) | |
623 | return; | |
624 | ||
625 | for(this_opt=strtok(options, ","); this_opt; | |
626 | this_opt=strtok(NULL, ",")) { | |
627 | if (!strncmp(this_opt, "panel:", 6)) { | |
628 | #if defined(CONFIG_MIPS_PB1100) || defined(CONFIG_MIPS_DB1100) | |
629 | /* Read Pb1100 Switch S10 ? */ | |
630 | if (!strncmp(this_opt+6, "s10", 3)) | |
631 | { | |
632 | int panel; | |
633 | panel = *(volatile int *)0xAE000008; /* BCSR SWITCHES */ | |
634 | panel >>= 8; | |
635 | panel &= 0x0F; | |
636 | if (panel >= num_panels) panel = 0; | |
637 | my_lcd_index = panel; | |
638 | } | |
639 | else | |
640 | #endif | |
641 | /* Get the panel name, everything else if fixed */ | |
642 | for (i=0; i<num_panels; i++) { | |
643 | if (!strncmp(this_opt+6, panels[i].panel_name, | |
644 | strlen(this_opt))) { | |
645 | my_lcd_index = i; | |
646 | break; | |
647 | } | |
648 | } | |
649 | } | |
650 | else if (!strncmp(this_opt, "nohwcursor", 10)) { | |
651 | printk("nohwcursor\n"); | |
652 | fb_info.nohwcursor = 1; | |
653 | } | |
654 | } | |
655 | ||
656 | printk("au1100fb: Panel %d %s\n", my_lcd_index, | |
657 | panels[my_lcd_index].panel_name); | |
658 | } | |
659 | ||
660 | ||
661 | ||
662 | #ifdef MODULE | |
663 | MODULE_LICENSE("GPL"); | |
664 | int init_module(void) | |
665 | { | |
666 | return au1100fb_init(); | |
667 | } | |
668 | ||
669 | void cleanup_module(void) | |
670 | { | |
671 | au1100fb_cleanup(void); | |
672 | } | |
673 | ||
674 | MODULE_AUTHOR("Pete Popov <ppopov@mvista.com>"); | |
675 | MODULE_DESCRIPTION("Au1100 LCD framebuffer device driver"); | |
676 | #endif /* MODULE */ |