2 * platinumfb.c -- frame buffer device for the PowerMac 'platinum' display
4 * Copyright (C) 1998 Franz Sirl
6 * Frame buffer structure from:
7 * drivers/video/controlfb.c -- frame buffer device for
8 * Apple 'control' display chip.
9 * Copyright (C) 1998 Dan Jacobowitz
11 * Hardware information from:
12 * platinum.c: Console support for PowerMac "platinum" display adaptor.
13 * Copyright (C) 1996 Paul Mackerras and Mark Abene
15 * This file is subject to the terms and conditions of the GNU General Public
16 * License. See the file COPYING in the main directory of this archive for
20 #include <linux/module.h>
21 #include <linux/kernel.h>
22 #include <linux/errno.h>
23 #include <linux/string.h>
25 #include <linux/slab.h>
26 #include <linux/vmalloc.h>
27 #include <linux/delay.h>
28 #include <linux/interrupt.h>
30 #include <linux/init.h>
31 #include <linux/pci.h>
32 #include <linux/nvram.h>
35 #include <asm/pgtable.h>
36 #include <asm/of_device.h>
39 #include "platinumfb.h"
41 static int default_vmode
= VMODE_NVRAM
;
42 static int default_cmode
= CMODE_NVRAM
;
44 struct fb_info_platinum
{
53 __u8 red
, green
, blue
;
55 u32 pseudo_palette
[17];
57 volatile struct cmap_regs __iomem
*cmap_regs
;
58 unsigned long cmap_regs_phys
;
60 volatile struct platinum_regs __iomem
*platinum_regs
;
61 unsigned long platinum_regs_phys
;
63 __u8 __iomem
*frame_buffer
;
64 volatile __u8 __iomem
*base_frame_buffer
;
65 unsigned long frame_buffer_phys
;
67 unsigned long total_vram
;
71 struct resource rsrc_fb
, rsrc_reg
;
75 * Frame buffer device API
78 static int platinumfb_setcolreg(u_int regno
, u_int red
, u_int green
, u_int blue
,
79 u_int transp
, struct fb_info
*info
);
80 static int platinumfb_blank(int blank_mode
, struct fb_info
*info
);
81 static int platinumfb_set_par (struct fb_info
*info
);
82 static int platinumfb_check_var (struct fb_var_screeninfo
*var
, struct fb_info
*info
);
88 static inline int platinum_vram_reqd(int video_mode
, int color_mode
);
89 static int read_platinum_sense(struct fb_info_platinum
*pinfo
);
90 static void set_platinum_clock(struct fb_info_platinum
*pinfo
);
91 static void platinum_set_hardware(struct fb_info_platinum
*pinfo
);
92 static int platinum_var_to_par(struct fb_var_screeninfo
*var
,
93 struct fb_info_platinum
*pinfo
,
97 * Interface used by the world
100 static struct fb_ops platinumfb_ops
= {
101 .owner
= THIS_MODULE
,
102 .fb_check_var
= platinumfb_check_var
,
103 .fb_set_par
= platinumfb_set_par
,
104 .fb_setcolreg
= platinumfb_setcolreg
,
105 .fb_blank
= platinumfb_blank
,
106 .fb_fillrect
= cfb_fillrect
,
107 .fb_copyarea
= cfb_copyarea
,
108 .fb_imageblit
= cfb_imageblit
,
112 * Checks a var structure
114 static int platinumfb_check_var (struct fb_var_screeninfo
*var
, struct fb_info
*info
)
116 return platinum_var_to_par(var
, info
->par
, 1);
120 * Applies current var to display
122 static int platinumfb_set_par (struct fb_info
*info
)
124 struct fb_info_platinum
*pinfo
= info
->par
;
125 struct platinum_regvals
*init
;
126 int err
, offset
= 0x20;
128 if((err
= platinum_var_to_par(&info
->var
, pinfo
, 0))) {
129 printk (KERN_ERR
"platinumfb_set_par: error calling"
130 " platinum_var_to_par: %d.\n", err
);
134 platinum_set_hardware(pinfo
);
136 init
= platinum_reg_init
[pinfo
->vmode
-1];
138 if ((pinfo
->vmode
== VMODE_832_624_75
) && (pinfo
->cmode
> CMODE_8
))
141 info
->screen_base
= pinfo
->frame_buffer
+ init
->fb_offset
+ offset
;
142 info
->fix
.smem_start
= (pinfo
->frame_buffer_phys
) + init
->fb_offset
+ offset
;
143 info
->fix
.visual
= (pinfo
->cmode
== CMODE_8
) ?
144 FB_VISUAL_PSEUDOCOLOR
: FB_VISUAL_DIRECTCOLOR
;
145 info
->fix
.line_length
= vmode_attrs
[pinfo
->vmode
-1].hres
* (1<<pinfo
->cmode
)
147 printk("line_length: %x\n", info
->fix
.line_length
);
151 static int platinumfb_blank(int blank
, struct fb_info
*fb
)
154 * Blank the screen if blank_mode != 0, else unblank. If blank == NULL
155 * then the caller blanks by setting the CLUT (Color Look Up Table) to all
156 * black. Return 0 if blanking succeeded, != 0 if un-/blanking failed due
157 * to e.g. a video mode which doesn't support it. Implements VESA suspend
158 * and powerdown modes on hardware that supports disabling hsync/vsync:
159 * blank_mode == 2: suspend vsync
160 * blank_mode == 3: suspend hsync
161 * blank_mode == 4: powerdown
163 /* [danj] I think there's something fishy about those constants... */
165 struct fb_info_platinum *info = (struct fb_info_platinum *) fb;
168 ctrl = ld_le32(&info->platinum_regs->ctrl.r) | 0x33;
171 if (blank & VESA_VSYNC_SUSPEND)
173 if (blank & VESA_HSYNC_SUSPEND)
175 out_le32(&info->platinum_regs->ctrl.r, ctrl);
177 /* TODO: Figure out how the heck to powerdown this thing! */
181 static int platinumfb_setcolreg(u_int regno
, u_int red
, u_int green
, u_int blue
,
182 u_int transp
, struct fb_info
*info
)
184 struct fb_info_platinum
*pinfo
= info
->par
;
185 volatile struct cmap_regs __iomem
*cmap_regs
= pinfo
->cmap_regs
;
194 pinfo
->palette
[regno
].red
= red
;
195 pinfo
->palette
[regno
].green
= green
;
196 pinfo
->palette
[regno
].blue
= blue
;
198 out_8(&cmap_regs
->addr
, regno
); /* tell clut what addr to fill */
199 out_8(&cmap_regs
->lut
, red
); /* send one color channel at */
200 out_8(&cmap_regs
->lut
, green
); /* a time... */
201 out_8(&cmap_regs
->lut
, blue
);
205 u32
*pal
= info
->pseudo_palette
;
206 switch (pinfo
->cmode
) {
208 pal
[regno
] = (regno
<< 10) | (regno
<< 5) | regno
;
211 i
= (regno
<< 8) | regno
;
212 pal
[regno
] = (i
<< 16) | i
;
220 static inline int platinum_vram_reqd(int video_mode
, int color_mode
)
222 return vmode_attrs
[video_mode
-1].vres
*
223 (vmode_attrs
[video_mode
-1].hres
* (1<<color_mode
) +
224 ((video_mode
== VMODE_832_624_75
) &&
225 (color_mode
> CMODE_8
)) ? 0x10 : 0x20) + 0x1000;
228 #define STORE_D2(a, d) { \
229 out_8(&cmap_regs->addr, (a+32)); \
230 out_8(&cmap_regs->d2, (d)); \
233 static void set_platinum_clock(struct fb_info_platinum
*pinfo
)
235 volatile struct cmap_regs __iomem
*cmap_regs
= pinfo
->cmap_regs
;
236 struct platinum_regvals
*init
;
238 init
= platinum_reg_init
[pinfo
->vmode
-1];
241 out_8(&cmap_regs
->addr
,3+32);
243 if (in_8(&cmap_regs
->d2
) == 2) {
244 STORE_D2(7, init
->clock_params
[pinfo
->clktype
][0]);
245 STORE_D2(8, init
->clock_params
[pinfo
->clktype
][1]);
248 STORE_D2(4, init
->clock_params
[pinfo
->clktype
][0]);
249 STORE_D2(5, init
->clock_params
[pinfo
->clktype
][1]);
258 /* Now how about actually saying, Make it so! */
259 /* Some things in here probably don't need to be done each time. */
260 static void platinum_set_hardware(struct fb_info_platinum
*pinfo
)
262 volatile struct platinum_regs __iomem
*platinum_regs
= pinfo
->platinum_regs
;
263 volatile struct cmap_regs __iomem
*cmap_regs
= pinfo
->cmap_regs
;
264 struct platinum_regvals
*init
;
268 vmode
= pinfo
->vmode
;
269 cmode
= pinfo
->cmode
;
271 init
= platinum_reg_init
[vmode
- 1];
273 /* Initialize display timing registers */
274 out_be32(&platinum_regs
->reg
[24].r
, 7); /* turn display off */
276 for (i
= 0; i
< 26; ++i
)
277 out_be32(&platinum_regs
->reg
[i
+32].r
, init
->regs
[i
]);
279 out_be32(&platinum_regs
->reg
[26+32].r
, (pinfo
->total_vram
== 0x100000 ?
280 init
->offset
[cmode
] + 4 - cmode
:
281 init
->offset
[cmode
]));
282 out_be32(&platinum_regs
->reg
[16].r
, (unsigned) pinfo
->frame_buffer_phys
+init
->fb_offset
+0x10);
283 out_be32(&platinum_regs
->reg
[18].r
, init
->pitch
[cmode
]);
284 out_be32(&platinum_regs
->reg
[19].r
, (pinfo
->total_vram
== 0x100000 ?
285 init
->mode
[cmode
+1] :
287 out_be32(&platinum_regs
->reg
[20].r
, (pinfo
->total_vram
== 0x100000 ? 0x11 : 0x1011));
288 out_be32(&platinum_regs
->reg
[21].r
, 0x100);
289 out_be32(&platinum_regs
->reg
[22].r
, 1);
290 out_be32(&platinum_regs
->reg
[23].r
, 1);
291 out_be32(&platinum_regs
->reg
[26].r
, 0xc00);
292 out_be32(&platinum_regs
->reg
[27].r
, 0x235);
293 /* out_be32(&platinum_regs->reg[27].r, 0x2aa); */
295 STORE_D2(0, (pinfo
->total_vram
== 0x100000 ?
296 init
->dacula_ctrl
[cmode
] & 0xf :
297 init
->dacula_ctrl
[cmode
]));
301 set_platinum_clock(pinfo
);
303 out_be32(&platinum_regs
->reg
[24].r
, 0); /* turn display on */
307 * Set misc info vars for this driver
309 static void __devinit
platinum_init_info(struct fb_info
*info
, struct fb_info_platinum
*pinfo
)
312 info
->fbops
= &platinumfb_ops
;
313 info
->pseudo_palette
= pinfo
->pseudo_palette
;
314 info
->flags
= FBINFO_DEFAULT
;
315 info
->screen_base
= pinfo
->frame_buffer
+ 0x20;
317 fb_alloc_cmap(&info
->cmap
, 256, 0);
319 /* Fill fix common fields */
320 strcpy(info
->fix
.id
, "platinum");
321 info
->fix
.mmio_start
= pinfo
->platinum_regs_phys
;
322 info
->fix
.mmio_len
= 0x1000;
323 info
->fix
.type
= FB_TYPE_PACKED_PIXELS
;
324 info
->fix
.smem_start
= pinfo
->frame_buffer_phys
+ 0x20; /* will be updated later */
325 info
->fix
.smem_len
= pinfo
->total_vram
- 0x20;
326 info
->fix
.ywrapstep
= 0;
327 info
->fix
.xpanstep
= 0;
328 info
->fix
.ypanstep
= 0;
329 info
->fix
.type_aux
= 0;
330 info
->fix
.accel
= FB_ACCEL_NONE
;
334 static int __devinit
platinum_init_fb(struct fb_info
*info
)
336 struct fb_info_platinum
*pinfo
= info
->par
;
337 struct fb_var_screeninfo var
;
340 sense
= read_platinum_sense(pinfo
);
341 printk(KERN_INFO
"platinumfb: Monitor sense value = 0x%x, ", sense
);
343 if (default_vmode
== VMODE_NVRAM
) {
344 default_vmode
= nvram_read_byte(NV_VMODE
);
345 if (default_vmode
<= 0 || default_vmode
> VMODE_MAX
||
346 !platinum_reg_init
[default_vmode
-1])
347 default_vmode
= VMODE_CHOOSE
;
349 if (default_vmode
== VMODE_CHOOSE
) {
350 default_vmode
= mac_map_monitor_sense(sense
);
352 if (default_vmode
<= 0 || default_vmode
> VMODE_MAX
)
353 default_vmode
= VMODE_640_480_60
;
354 if (default_cmode
== CMODE_NVRAM
)
355 default_cmode
= nvram_read_byte(NV_CMODE
);
356 if (default_cmode
< CMODE_8
|| default_cmode
> CMODE_32
)
357 default_cmode
= CMODE_8
;
359 * Reduce the pixel size if we don't have enough VRAM.
361 while(default_cmode
> CMODE_8
&&
362 platinum_vram_reqd(default_vmode
, default_cmode
) > pinfo
->total_vram
)
365 printk("platinumfb: Using video mode %d and color mode %d.\n", default_vmode
, default_cmode
);
367 /* Setup default var */
368 if (mac_vmode_to_var(default_vmode
, default_cmode
, &var
) < 0) {
369 /* This shouldn't happen! */
370 printk("mac_vmode_to_var(%d, %d,) failed\n", default_vmode
, default_cmode
);
372 default_vmode
= VMODE_640_480_60
;
373 default_cmode
= CMODE_8
;
374 if (mac_vmode_to_var(default_vmode
, default_cmode
, &var
) < 0) {
375 printk(KERN_ERR
"platinumfb: mac_vmode_to_var() failed\n");
380 /* Initialize info structure */
381 platinum_init_info(info
, pinfo
);
383 /* Apply default var */
385 var
.activate
= FB_ACTIVATE_NOW
;
386 rc
= fb_set_var(info
, &var
);
387 if (rc
&& (default_vmode
!= VMODE_640_480_60
|| default_cmode
!= CMODE_8
))
390 /* Register with fbdev layer */
391 rc
= register_framebuffer(info
);
395 printk(KERN_INFO
"fb%d: Apple Platinum frame buffer device\n", info
->node
);
401 * Get the monitor sense value.
402 * Note that this can be called before calibrate_delay,
403 * so we can't use udelay.
405 static int read_platinum_sense(struct fb_info_platinum
*info
)
407 volatile struct platinum_regs __iomem
*platinum_regs
= info
->platinum_regs
;
410 out_be32(&platinum_regs
->reg
[23].r
, 7); /* turn off drivers */
412 sense
= (~in_be32(&platinum_regs
->reg
[23].r
) & 7) << 8;
414 /* drive each sense line low in turn and collect the other 2 */
415 out_be32(&platinum_regs
->reg
[23].r
, 3); /* drive A low */
417 sense
|= (~in_be32(&platinum_regs
->reg
[23].r
) & 3) << 4;
418 out_be32(&platinum_regs
->reg
[23].r
, 5); /* drive B low */
420 sense
|= (~in_be32(&platinum_regs
->reg
[23].r
) & 4) << 1;
421 sense
|= (~in_be32(&platinum_regs
->reg
[23].r
) & 1) << 2;
422 out_be32(&platinum_regs
->reg
[23].r
, 6); /* drive C low */
424 sense
|= (~in_be32(&platinum_regs
->reg
[23].r
) & 6) >> 1;
426 out_be32(&platinum_regs
->reg
[23].r
, 7); /* turn off drivers */
432 * This routine takes a user-supplied var, and picks the best vmode/cmode from it.
433 * It also updates the var structure to the actual mode data obtained
435 static int platinum_var_to_par(struct fb_var_screeninfo
*var
,
436 struct fb_info_platinum
*pinfo
,
441 if (mac_var_to_vmode(var
, &vmode
, &cmode
) != 0) {
442 printk(KERN_ERR
"platinum_var_to_par: mac_var_to_vmode unsuccessful.\n");
443 printk(KERN_ERR
"platinum_var_to_par: var->xres = %d\n", var
->xres
);
444 printk(KERN_ERR
"platinum_var_to_par: var->yres = %d\n", var
->yres
);
445 printk(KERN_ERR
"platinum_var_to_par: var->xres_virtual = %d\n", var
->xres_virtual
);
446 printk(KERN_ERR
"platinum_var_to_par: var->yres_virtual = %d\n", var
->yres_virtual
);
447 printk(KERN_ERR
"platinum_var_to_par: var->bits_per_pixel = %d\n", var
->bits_per_pixel
);
448 printk(KERN_ERR
"platinum_var_to_par: var->pixclock = %d\n", var
->pixclock
);
449 printk(KERN_ERR
"platinum_var_to_par: var->vmode = %d\n", var
->vmode
);
453 if (!platinum_reg_init
[vmode
-1]) {
454 printk(KERN_ERR
"platinum_var_to_par, vmode %d not valid.\n", vmode
);
458 if (platinum_vram_reqd(vmode
, cmode
) > pinfo
->total_vram
) {
459 printk(KERN_ERR
"platinum_var_to_par, not enough ram for vmode %d, cmode %d.\n", vmode
, cmode
);
463 if (mac_vmode_to_var(vmode
, cmode
, var
))
469 pinfo
->vmode
= vmode
;
470 pinfo
->cmode
= cmode
;
471 pinfo
->xres
= vmode_attrs
[vmode
-1].hres
;
472 pinfo
->yres
= vmode_attrs
[vmode
-1].vres
;
475 pinfo
->vxres
= pinfo
->xres
;
476 pinfo
->vyres
= pinfo
->yres
;
483 * Parse user speficied options (`video=platinumfb:')
485 static int __init
platinumfb_setup(char *options
)
489 if (!options
|| !*options
)
492 while ((this_opt
= strsep(&options
, ",")) != NULL
) {
493 if (!strncmp(this_opt
, "vmode:", 6)) {
494 int vmode
= simple_strtoul(this_opt
+6, NULL
, 0);
495 if (vmode
> 0 && vmode
<= VMODE_MAX
)
496 default_vmode
= vmode
;
497 } else if (!strncmp(this_opt
, "cmode:", 6)) {
498 int depth
= simple_strtoul(this_opt
+6, NULL
, 0);
502 default_cmode
= CMODE_8
;
506 default_cmode
= CMODE_16
;
510 default_cmode
= CMODE_32
;
519 #define invalidate_cache(addr) \
520 asm volatile("eieio; dcbf 0,%1" \
521 : "=m" (*(addr)) : "r" (addr) : "memory");
523 #define invalidate_cache(addr)
526 static int __devinit
platinumfb_probe(struct of_device
* odev
,
527 const struct of_device_id
*match
)
529 struct device_node
*dp
= odev
->node
;
530 struct fb_info
*info
;
531 struct fb_info_platinum
*pinfo
;
532 volatile __u8
*fbuffer
;
533 int bank0
, bank1
, bank2
, bank3
, rc
;
535 printk(KERN_INFO
"platinumfb: Found Apple Platinum video hardware\n");
537 info
= framebuffer_alloc(sizeof(*pinfo
), &odev
->dev
);
542 if (of_address_to_resource(dp
, 0, &pinfo
->rsrc_reg
) ||
543 of_address_to_resource(dp
, 1, &pinfo
->rsrc_fb
)) {
544 printk(KERN_ERR
"platinumfb: Can't get resources\n");
545 framebuffer_release(info
);
548 if (!request_mem_region(pinfo
->rsrc_reg
.start
,
549 pinfo
->rsrc_reg
.start
-
550 pinfo
->rsrc_reg
.end
+ 1,
551 "platinumfb registers")) {
552 framebuffer_release(info
);
555 if (!request_mem_region(pinfo
->rsrc_fb
.start
,
557 - pinfo
->rsrc_fb
.end
+ 1,
558 "platinumfb framebuffer")) {
559 release_mem_region(pinfo
->rsrc_reg
.start
,
560 pinfo
->rsrc_reg
.end
-
561 pinfo
->rsrc_reg
.start
+ 1);
562 framebuffer_release(info
);
566 /* frame buffer - map only 4MB */
567 pinfo
->frame_buffer_phys
= pinfo
->rsrc_fb
.start
;
568 pinfo
->frame_buffer
= __ioremap(pinfo
->rsrc_fb
.start
, 0x400000,
570 pinfo
->base_frame_buffer
= pinfo
->frame_buffer
;
573 pinfo
->platinum_regs_phys
= pinfo
->rsrc_reg
.start
;
574 pinfo
->platinum_regs
= ioremap(pinfo
->rsrc_reg
.start
, 0x1000);
576 pinfo
->cmap_regs_phys
= 0xf301b000; /* XXX not in prom? */
577 request_mem_region(pinfo
->cmap_regs_phys
, 0x1000, "platinumfb cmap");
578 pinfo
->cmap_regs
= ioremap(pinfo
->cmap_regs_phys
, 0x1000);
580 /* Grok total video ram */
581 out_be32(&pinfo
->platinum_regs
->reg
[16].r
, (unsigned)pinfo
->frame_buffer_phys
);
582 out_be32(&pinfo
->platinum_regs
->reg
[20].r
, 0x1011); /* select max vram */
583 out_be32(&pinfo
->platinum_regs
->reg
[24].r
, 0); /* switch in vram */
585 fbuffer
= pinfo
->base_frame_buffer
;
586 fbuffer
[0x100000] = 0x34;
587 fbuffer
[0x100008] = 0x0;
588 invalidate_cache(&fbuffer
[0x100000]);
589 fbuffer
[0x200000] = 0x56;
590 fbuffer
[0x200008] = 0x0;
591 invalidate_cache(&fbuffer
[0x200000]);
592 fbuffer
[0x300000] = 0x78;
593 fbuffer
[0x300008] = 0x0;
594 invalidate_cache(&fbuffer
[0x300000]);
595 bank0
= 1; /* builtin 1MB vram, always there */
596 bank1
= fbuffer
[0x100000] == 0x34;
597 bank2
= fbuffer
[0x200000] == 0x56;
598 bank3
= fbuffer
[0x300000] == 0x78;
599 pinfo
->total_vram
= (bank0
+ bank1
+ bank2
+ bank3
) * 0x100000;
600 printk(KERN_INFO
"platinumfb: Total VRAM = %dMB (%d%d%d%d)\n", (int) (pinfo
->total_vram
/ 1024 / 1024),
601 bank3
, bank2
, bank1
, bank0
);
604 * Try to determine whether we have an old or a new DACula.
606 out_8(&pinfo
->cmap_regs
->addr
, 0x40);
607 pinfo
->dactype
= in_8(&pinfo
->cmap_regs
->d2
);
608 switch (pinfo
->dactype
) {
611 printk(KERN_INFO
"platinumfb: DACula type 0x3c\n");
615 printk(KERN_INFO
"platinumfb: DACula type 0x84\n");
619 printk(KERN_INFO
"platinumfb: Unknown DACula type: %x\n", pinfo
->dactype
);
622 dev_set_drvdata(&odev
->dev
, info
);
624 rc
= platinum_init_fb(info
);
626 dev_set_drvdata(&odev
->dev
, NULL
);
627 framebuffer_release(info
);
633 static int __devexit
platinumfb_remove(struct of_device
* odev
)
635 struct fb_info
*info
= dev_get_drvdata(&odev
->dev
);
636 struct fb_info_platinum
*pinfo
= info
->par
;
638 unregister_framebuffer (info
);
640 /* Unmap frame buffer and registers */
641 release_mem_region(pinfo
->rsrc_fb
.start
,
643 pinfo
->rsrc_fb
.start
+ 1);
644 release_mem_region(pinfo
->rsrc_reg
.start
,
645 pinfo
->rsrc_reg
.end
-
646 pinfo
->rsrc_reg
.start
+ 1);
647 iounmap(pinfo
->frame_buffer
);
648 iounmap(pinfo
->platinum_regs
);
649 release_mem_region(pinfo
->cmap_regs_phys
, 0x1000);
650 iounmap(pinfo
->cmap_regs
);
652 framebuffer_release(info
);
657 static struct of_device_id platinumfb_match
[] =
665 static struct of_platform_driver platinum_driver
=
667 .name
= "platinumfb",
668 .match_table
= platinumfb_match
,
669 .probe
= platinumfb_probe
,
670 .remove
= platinumfb_remove
,
673 static int __init
platinumfb_init(void)
678 if (fb_get_options("platinumfb", &option
))
680 platinumfb_setup(option
);
682 of_register_driver(&platinum_driver
);
687 static void __exit
platinumfb_exit(void)
689 of_unregister_driver(&platinum_driver
);
692 MODULE_LICENSE("GPL");
693 MODULE_DESCRIPTION("framebuffer driver for Apple Platinum video");
694 module_init(platinumfb_init
);
697 module_exit(platinumfb_exit
);