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[PATCH] ARM: fixup irqflags breakage after ARM genirq merge
[usb.git] / drivers / video / offb.c
blobbfeb11bd4712239c73f425f7ec5840f3dad8e3c6
1 /*
2 * linux/drivers/video/offb.c -- Open Firmware based frame buffer device
3 *
4 * Copyright (C) 1997 Geert Uytterhoeven
5 *
6 * This driver is partly based on the PowerMac console driver:
7 *
8 * Copyright (C) 1996 Paul Mackerras
9 *
10 * This file is subject to the terms and conditions of the GNU General Public
11 * License. See the file COPYING in the main directory of this archive for
12 * more details.
13 */
14
15 #include <linux/module.h>
16 #include <linux/kernel.h>
17 #include <linux/errno.h>
18 #include <linux/string.h>
19 #include <linux/mm.h>
20 #include <linux/tty.h>
21 #include <linux/slab.h>
22 #include <linux/vmalloc.h>
23 #include <linux/delay.h>
24 #include <linux/interrupt.h>
25 #include <linux/fb.h>
26 #include <linux/init.h>
27 #include <linux/ioport.h>
28 #include <linux/pci.h>
29 #include <asm/io.h>
30 #include <asm/prom.h>
31
32 #ifdef CONFIG_PPC64
33 #include <asm/pci-bridge.h>
34 #endif
35
36 #ifdef CONFIG_PPC32
37 #include <asm/bootx.h>
38 #endif
39
40 #include "macmodes.h"
41
42 /* Supported palette hacks */
43 enum {
44 cmap_unknown,
45 cmap_m64, /* ATI Mach64 */
46 cmap_r128, /* ATI Rage128 */
47 cmap_M3A, /* ATI Rage Mobility M3 Head A */
48 cmap_M3B, /* ATI Rage Mobility M3 Head B */
49 cmap_radeon, /* ATI Radeon */
50 cmap_gxt2000, /* IBM GXT2000 */
51 };
52
53 struct offb_par {
54 volatile void __iomem *cmap_adr;
55 volatile void __iomem *cmap_data;
56 int cmap_type;
57 int blanked;
58 };
59
60 struct offb_par default_par;
61
62 /*
63 * Interface used by the world
64 */
65
66 int offb_init(void);
67
68 static int offb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
69 u_int transp, struct fb_info *info);
70 static int offb_blank(int blank, struct fb_info *info);
71
72 #ifdef CONFIG_PPC32
73 extern boot_infos_t *boot_infos;
74 #endif
75
76 static void offb_init_nodriver(struct device_node *);
77 static void offb_init_fb(const char *name, const char *full_name,
78 int width, int height, int depth, int pitch,
79 unsigned long address, struct device_node *dp);
80
81 static struct fb_ops offb_ops = {
82 .owner = THIS_MODULE,
83 .fb_setcolreg = offb_setcolreg,
84 .fb_blank = offb_blank,
85 .fb_fillrect = cfb_fillrect,
86 .fb_copyarea = cfb_copyarea,
87 .fb_imageblit = cfb_imageblit,
88 };
89
90 /*
91 * Set a single color register. The values supplied are already
92 * rounded down to the hardware's capabilities (according to the
93 * entries in the var structure). Return != 0 for invalid regno.
94 */
95
96 static int offb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
97 u_int transp, struct fb_info *info)
98 {
99 struct offb_par *par = (struct offb_par *) info->par;
100
101 if (!par->cmap_adr || regno > 255)
102 return 1;
103
104 red >>= 8;
105 green >>= 8;
106 blue >>= 8;
107
108 switch (par->cmap_type) {
109 case cmap_m64:
110 writeb(regno, par->cmap_adr);
111 writeb(red, par->cmap_data);
112 writeb(green, par->cmap_data);
113 writeb(blue, par->cmap_data);
114 break;
115 case cmap_M3A:
116 /* Clear PALETTE_ACCESS_CNTL in DAC_CNTL */
117 out_le32(par->cmap_adr + 0x58,
118 in_le32(par->cmap_adr + 0x58) & ~0x20);
119 case cmap_r128:
120 /* Set palette index & data */
121 out_8(par->cmap_adr + 0xb0, regno);
122 out_le32(par->cmap_adr + 0xb4,
123 (red << 16 | green << 8 | blue));
124 break;
125 case cmap_M3B:
126 /* Set PALETTE_ACCESS_CNTL in DAC_CNTL */
127 out_le32(par->cmap_adr + 0x58,
128 in_le32(par->cmap_adr + 0x58) | 0x20);
129 /* Set palette index & data */
130 out_8(par->cmap_adr + 0xb0, regno);
131 out_le32(par->cmap_adr + 0xb4, (red << 16 | green << 8 | blue));
132 break;
133 case cmap_radeon:
134 /* Set palette index & data (could be smarter) */
135 out_8(par->cmap_adr + 0xb0, regno);
136 out_le32(par->cmap_adr + 0xb4, (red << 16 | green << 8 | blue));
137 break;
138 case cmap_gxt2000:
139 out_le32((unsigned __iomem *) par->cmap_adr + regno,
140 (red << 16 | green << 8 | blue));
141 break;
142 }
143
144 if (regno < 16)
145 switch (info->var.bits_per_pixel) {
146 case 16:
147 ((u16 *) (info->pseudo_palette))[regno] =
148 (regno << 10) | (regno << 5) | regno;
149 break;
150 case 32:
151 {
152 int i = (regno << 8) | regno;
153 ((u32 *) (info->pseudo_palette))[regno] =
154 (i << 16) | i;
155 break;
156 }
157 }
158 return 0;
159 }
160
161 /*
162 * Blank the display.
163 */
164
165 static int offb_blank(int blank, struct fb_info *info)
166 {
167 struct offb_par *par = (struct offb_par *) info->par;
168 int i, j;
169
170 if (!par->cmap_adr)
171 return 0;
172
173 if (!par->blanked)
174 if (!blank)
175 return 0;
176
177 par->blanked = blank;
178
179 if (blank)
180 for (i = 0; i < 256; i++) {
181 switch (par->cmap_type) {
182 case cmap_m64:
183 writeb(i, par->cmap_adr);
184 for (j = 0; j < 3; j++)
185 writeb(0, par->cmap_data);
186 break;
187 case cmap_M3A:
188 /* Clear PALETTE_ACCESS_CNTL in DAC_CNTL */
189 out_le32(par->cmap_adr + 0x58,
190 in_le32(par->cmap_adr + 0x58) & ~0x20);
191 case cmap_r128:
192 /* Set palette index & data */
193 out_8(par->cmap_adr + 0xb0, i);
194 out_le32(par->cmap_adr + 0xb4, 0);
195 break;
196 case cmap_M3B:
197 /* Set PALETTE_ACCESS_CNTL in DAC_CNTL */
198 out_le32(par->cmap_adr + 0x58,
199 in_le32(par->cmap_adr + 0x58) | 0x20);
200 /* Set palette index & data */
201 out_8(par->cmap_adr + 0xb0, i);
202 out_le32(par->cmap_adr + 0xb4, 0);
203 break;
204 case cmap_radeon:
205 out_8(par->cmap_adr + 0xb0, i);
206 out_le32(par->cmap_adr + 0xb4, 0);
207 break;
208 case cmap_gxt2000:
209 out_le32((unsigned __iomem *) par->cmap_adr + i,
210 0);
211 break;
212 }
213 } else
214 fb_set_cmap(&info->cmap, info);
215 return 0;
216 }
217
218 /*
219 * Initialisation
220 */
221
222 int __init offb_init(void)
223 {
224 struct device_node *dp = NULL, *boot_disp = NULL;
225
226 #if defined(CONFIG_BOOTX_TEXT) && defined(CONFIG_PPC32)
227 struct device_node *macos_display = NULL;
228 #endif
229 if (fb_get_options("offb", NULL))
230 return -ENODEV;
231
232 #if defined(CONFIG_BOOTX_TEXT) && defined(CONFIG_PPC32)
233 /* If we're booted from BootX... */
234 if (boot_infos != 0) {
235 unsigned long addr =
236 (unsigned long) boot_infos->dispDeviceBase;
237 u32 *addrp;
238 u64 daddr, dsize;
239 unsigned int flags;
240
241 /* find the device node corresponding to the macos display */
242 while ((dp = of_find_node_by_type(dp, "display"))) {
243 int i;
244
245 /*
246 * Look for an AAPL,address property first.
247 */
248 unsigned int na;
249 unsigned int *ap =
250 (unsigned int *)get_property(dp, "AAPL,address",
251 &na);
252 if (ap != 0) {
253 for (na /= sizeof(unsigned int); na > 0;
254 --na, ++ap)
255 if (*ap <= addr &&
256 addr < *ap + 0x1000000) {
257 macos_display = dp;
258 goto foundit;
259 }
260 }
261
262 /*
263 * See if the display address is in one of the address
264 * ranges for this display.
265 */
266 i = 0;
267 for (;;) {
268 addrp = of_get_address(dp, i++, &dsize, &flags);
269 if (addrp == NULL)
270 break;
271 if (!(flags & IORESOURCE_MEM))
272 continue;
273 daddr = of_translate_address(dp, addrp);
274 if (daddr == OF_BAD_ADDR)
275 continue;
276 if (daddr <= addr && addr < (daddr + dsize)) {
277 macos_display = dp;
278 goto foundit;
279 }
280 }
281 foundit:
282 if (macos_display) {
283 printk(KERN_INFO "MacOS display is %s\n",
284 dp->full_name);
285 break;
286 }
287 }
288
289 /* initialize it */
290 offb_init_fb(macos_display ? macos_display->
291 name : "MacOS display",
292 macos_display ? macos_display->
293 full_name : "MacOS display",
294 boot_infos->dispDeviceRect[2],
295 boot_infos->dispDeviceRect[3],
296 boot_infos->dispDeviceDepth,
297 boot_infos->dispDeviceRowBytes, addr, NULL);
298 }
299 #endif /* defined(CONFIG_BOOTX_TEXT) && defined(CONFIG_PPC32) */
300
301 for (dp = NULL; (dp = of_find_node_by_type(dp, "display"));) {
302 if (get_property(dp, "linux,opened", NULL) &&
303 get_property(dp, "linux,boot-display", NULL)) {
304 boot_disp = dp;
305 offb_init_nodriver(dp);
306 }
307 }
308 for (dp = NULL; (dp = of_find_node_by_type(dp, "display"));) {
309 if (get_property(dp, "linux,opened", NULL) &&
310 dp != boot_disp)
311 offb_init_nodriver(dp);
312 }
313
314 return 0;
315 }
316
317
318 static void __init offb_init_nodriver(struct device_node *dp)
319 {
320 int *pp, i;
321 unsigned int len;
322 int width = 640, height = 480, depth = 8, pitch;
323 unsigned int flags, rsize, *up;
324 u64 address = OF_BAD_ADDR;
325 u32 *addrp;
326 u64 asize;
327
328 if ((pp = (int *) get_property(dp, "depth", &len)) != NULL
329 && len == sizeof(int))
330 depth = *pp;
331 if ((pp = (int *) get_property(dp, "width", &len)) != NULL
332 && len == sizeof(int))
333 width = *pp;
334 if ((pp = (int *) get_property(dp, "height", &len)) != NULL
335 && len == sizeof(int))
336 height = *pp;
337 if ((pp = (int *) get_property(dp, "linebytes", &len)) != NULL
338 && len == sizeof(int)) {
339 pitch = *pp;
340 if (pitch == 1)
341 pitch = 0x1000;
342 } else
343 pitch = width;
344
345 rsize = (unsigned long)pitch * (unsigned long)height *
346 (unsigned long)(depth / 8);
347
348 /* Try to match device to a PCI device in order to get a properly
349 * translated address rather then trying to decode the open firmware
350 * stuff in various incorrect ways
351 */
352 #ifdef CONFIG_PCI
353 /* First try to locate the PCI device if any */
354 {
355 struct pci_dev *pdev = NULL;
356
357 for_each_pci_dev(pdev) {
358 if (dp == pci_device_to_OF_node(pdev))
359 break;
360 }
361 if (pdev) {
362 for (i = 0; i < 6 && address == OF_BAD_ADDR; i++) {
363 if ((pci_resource_flags(pdev, i) &
364 IORESOURCE_MEM) &&
365 (pci_resource_len(pdev, i) >= rsize))
366 address = pci_resource_start(pdev, i);
367 }
368 pci_dev_put(pdev);
369 }
370 }
371 #endif /* CONFIG_PCI */
372
373 /* This one is dodgy, we may drop it ... */
374 if (address == OF_BAD_ADDR &&
375 (up = (unsigned *) get_property(dp, "address", &len)) != NULL &&
376 len == sizeof(unsigned int))
377 address = (u64) * up;
378
379 if (address == OF_BAD_ADDR) {
380 for (i = 0; (addrp = of_get_address(dp, i, &asize, &flags))
381 != NULL; i++) {
382 if (!(flags & IORESOURCE_MEM))
383 continue;
384 if (asize >= pitch * height * depth / 8)
385 break;
386 }
387 if (addrp == NULL) {
388 printk(KERN_ERR
389 "no framebuffer address found for %s\n",
390 dp->full_name);
391 return;
392 }
393 address = of_translate_address(dp, addrp);
394 if (address == OF_BAD_ADDR) {
395 printk(KERN_ERR
396 "can't translate framebuffer address for %s\n",
397 dp->full_name);
398 return;
399 }
400
401 /* kludge for valkyrie */
402 if (strcmp(dp->name, "valkyrie") == 0)
403 address += 0x1000;
404 }
405 offb_init_fb(dp->name, dp->full_name, width, height, depth,
406 pitch, address, dp);
407
408 }
409
410 static void __init offb_init_fb(const char *name, const char *full_name,
411 int width, int height, int depth,
412 int pitch, unsigned long address,
413 struct device_node *dp)
414 {
415 unsigned long res_size = pitch * height * depth / 8;
416 struct offb_par *par = &default_par;
417 unsigned long res_start = address;
418 struct fb_fix_screeninfo *fix;
419 struct fb_var_screeninfo *var;
420 struct fb_info *info;
421 int size;
422
423 if (!request_mem_region(res_start, res_size, "offb"))
424 return;
425
426 printk(KERN_INFO
427 "Using unsupported %dx%d %s at %lx, depth=%d, pitch=%d\n",
428 width, height, name, address, depth, pitch);
429 if (depth != 8 && depth != 16 && depth != 32) {
430 printk(KERN_ERR "%s: can't use depth = %d\n", full_name,
431 depth);
432 release_mem_region(res_start, res_size);
433 return;
434 }
435
436 size = sizeof(struct fb_info) + sizeof(u32) * 17;
437
438 info = kmalloc(size, GFP_ATOMIC);
439
440 if (info == 0) {
441 release_mem_region(res_start, res_size);
442 return;
443 }
444 memset(info, 0, size);
445
446 fix = &info->fix;
447 var = &info->var;
448
449 strcpy(fix->id, "OFfb ");
450 strncat(fix->id, name, sizeof(fix->id) - sizeof("OFfb "));
451 fix->id[sizeof(fix->id) - 1] = '\0';
452
453 var->xres = var->xres_virtual = width;
454 var->yres = var->yres_virtual = height;
455 fix->line_length = pitch;
456
457 fix->smem_start = address;
458 fix->smem_len = pitch * height;
459 fix->type = FB_TYPE_PACKED_PIXELS;
460 fix->type_aux = 0;
461
462 par->cmap_type = cmap_unknown;
463 if (depth == 8) {
464
465 /* Palette hacks disabled for now */
466 #if 0
467 if (dp && !strncmp(name, "ATY,Rage128", 11)) {
468 unsigned long regbase = dp->addrs[2].address;
469 par->cmap_adr = ioremap(regbase, 0x1FFF);
470 par->cmap_type = cmap_r128;
471 } else if (dp && (!strncmp(name, "ATY,RageM3pA", 12)
472 || !strncmp(name, "ATY,RageM3p12A", 14))) {
473 unsigned long regbase =
474 dp->parent->addrs[2].address;
475 par->cmap_adr = ioremap(regbase, 0x1FFF);
476 par->cmap_type = cmap_M3A;
477 } else if (dp && !strncmp(name, "ATY,RageM3pB", 12)) {
478 unsigned long regbase =
479 dp->parent->addrs[2].address;
480 par->cmap_adr = ioremap(regbase, 0x1FFF);
481 par->cmap_type = cmap_M3B;
482 } else if (dp && !strncmp(name, "ATY,Rage6", 9)) {
483 unsigned long regbase = dp->addrs[1].address;
484 par->cmap_adr = ioremap(regbase, 0x1FFF);
485 par->cmap_type = cmap_radeon;
486 } else if (!strncmp(name, "ATY,", 4)) {
487 unsigned long base = address & 0xff000000UL;
488 par->cmap_adr =
489 ioremap(base + 0x7ff000, 0x1000) + 0xcc0;
490 par->cmap_data = par->cmap_adr + 1;
491 par->cmap_type = cmap_m64;
492 } else if (device_is_compatible(dp, "pci1014,b7")) {
493 unsigned long regbase = dp->addrs[0].address;
494 par->cmap_adr = ioremap(regbase + 0x6000, 0x1000);
495 par->cmap_type = cmap_gxt2000;
496 }
497 #endif
498 fix->visual = par->cmap_adr ? FB_VISUAL_PSEUDOCOLOR
499 : FB_VISUAL_STATIC_PSEUDOCOLOR;
500 } else
501 fix->visual = /* par->cmap_adr ? FB_VISUAL_DIRECTCOLOR
502 : */ FB_VISUAL_TRUECOLOR;
503
504 var->xoffset = var->yoffset = 0;
505 var->bits_per_pixel = depth;
506 switch (depth) {
507 case 8:
508 var->bits_per_pixel = 8;
509 var->red.offset = 0;
510 var->red.length = 8;
511 var->green.offset = 0;
512 var->green.length = 8;
513 var->blue.offset = 0;
514 var->blue.length = 8;
515 var->transp.offset = 0;
516 var->transp.length = 0;
517 break;
518 case 16: /* RGB 555 */
519 var->bits_per_pixel = 16;
520 var->red.offset = 10;
521 var->red.length = 5;
522 var->green.offset = 5;
523 var->green.length = 5;
524 var->blue.offset = 0;
525 var->blue.length = 5;
526 var->transp.offset = 0;
527 var->transp.length = 0;
528 break;
529 case 32: /* RGB 888 */
530 var->bits_per_pixel = 32;
531 var->red.offset = 16;
532 var->red.length = 8;
533 var->green.offset = 8;
534 var->green.length = 8;
535 var->blue.offset = 0;
536 var->blue.length = 8;
537 var->transp.offset = 24;
538 var->transp.length = 8;
539 break;
540 }
541 var->red.msb_right = var->green.msb_right = var->blue.msb_right =
542 var->transp.msb_right = 0;
543 var->grayscale = 0;
544 var->nonstd = 0;
545 var->activate = 0;
546 var->height = var->width = -1;
547 var->pixclock = 10000;
548 var->left_margin = var->right_margin = 16;
549 var->upper_margin = var->lower_margin = 16;
550 var->hsync_len = var->vsync_len = 8;
551 var->sync = 0;
552 var->vmode = FB_VMODE_NONINTERLACED;
553
554 info->fbops = &offb_ops;
555 info->screen_base = ioremap(address, fix->smem_len);
556 info->par = par;
557 info->pseudo_palette = (void *) (info + 1);
558 info->flags = FBINFO_DEFAULT;
559
560 fb_alloc_cmap(&info->cmap, 256, 0);
561
562 if (register_framebuffer(info) < 0) {
563 kfree(info);
564 release_mem_region(res_start, res_size);
565 return;
566 }
567
568 printk(KERN_INFO "fb%d: Open Firmware frame buffer device on %s\n",
569 info->node, full_name);
570 }
571
572 module_init(offb_init);
573 MODULE_LICENSE("GPL");
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