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Linux-2.6.12-rc2
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / video / i810 / i810_main.c
blob9ec8781794c01b15b65ae75c5ee492d91f292de6
1 /*-*- linux-c -*-
2 * linux/drivers/video/i810_main.c -- Intel 810 frame buffer device
3 *
4 * Copyright (C) 2001 Antonino Daplas<adaplas@pol.net>
5 * All Rights Reserved
6 *
7 * Contributors:
8 * Michael Vogt <mvogt@acm.org> - added support for Intel 815 chipsets
9 * and enabling the power-on state of
10 * external VGA connectors for
11 * secondary displays
12 *
13 * Fredrik Andersson <krueger@shell.linux.se> - alpha testing of
14 * the VESA GTF
15 *
16 * Brad Corrion <bcorrion@web-co.com> - alpha testing of customized
17 * timings support
18 *
19 * The code framework is a modification of vfb.c by Geert Uytterhoeven.
20 * DotClock and PLL calculations are partly based on i810_driver.c
21 * in xfree86 v4.0.3 by Precision Insight.
22 * Watermark calculation and tables are based on i810_wmark.c
23 * in xfre86 v4.0.3 by Precision Insight. Slight modifications
24 * only to allow for integer operations instead of floating point.
25 *
26 * This file is subject to the terms and conditions of the GNU General Public
27 * License. See the file COPYING in the main directory of this archive for
28 * more details.
29 */
30
31 #include <linux/module.h>
32 #include <linux/config.h>
33 #include <linux/kernel.h>
34 #include <linux/errno.h>
35 #include <linux/string.h>
36 #include <linux/mm.h>
37 #include <linux/tty.h>
38 #include <linux/slab.h>
39 #include <linux/fb.h>
40 #include <linux/init.h>
41 #include <linux/pci.h>
42 #include <linux/pci_ids.h>
43 #include <linux/resource.h>
44 #include <linux/unistd.h>
45
46 #include <asm/io.h>
47 #include <asm/div64.h>
48
49 #ifdef CONFIG_MTRR
50 #include <asm/mtrr.h>
51 #endif
52
53 #include <asm/page.h>
54
55 #include "i810_regs.h"
56 #include "i810.h"
57 #include "i810_main.h"
58
59 /* PCI */
60 static const char *i810_pci_list[] __devinitdata = {
61 "Intel(R) 810 Framebuffer Device" ,
62 "Intel(R) 810-DC100 Framebuffer Device" ,
63 "Intel(R) 810E Framebuffer Device" ,
64 "Intel(R) 815 (Internal Graphics 100Mhz FSB) Framebuffer Device" ,
65 "Intel(R) 815 (Internal Graphics only) Framebuffer Device" ,
66 "Intel(R) 815 (Internal Graphics with AGP) Framebuffer Device"
67 };
68
69 static struct pci_device_id i810fb_pci_tbl[] = {
70 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG1,
71 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
72 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3,
73 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
74 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810E_IG,
75 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
76 /* mvo: added i815 PCI-ID */
77 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_100,
78 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
79 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_NOAGP,
80 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
81 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_CGC,
82 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
83 { 0 },
84 };
85
86 static struct pci_driver i810fb_driver = {
87 .name = "i810fb",
88 .id_table = i810fb_pci_tbl,
89 .probe = i810fb_init_pci,
90 .remove = __exit_p(i810fb_remove_pci),
91 .suspend = i810fb_suspend,
92 .resume = i810fb_resume,
93 };
94
95 static int vram __initdata = 4;
96 static int bpp __initdata = 8;
97 static int mtrr __initdata = 0;
98 static int accel __initdata = 0;
99 static int hsync1 __initdata = 0;
100 static int hsync2 __initdata = 0;
101 static int vsync1 __initdata = 0;
102 static int vsync2 __initdata = 0;
103 static int xres __initdata = 640;
104 static int yres __initdata = 480;
105 static int vyres __initdata = 0;
106 static int sync __initdata = 0;
107 static int ext_vga __initdata = 0;
108 static int dcolor __initdata = 0;
109
110 /*------------------------------------------------------------*/
111
112 /**************************************************************
113 * Hardware Low Level Routines *
114 **************************************************************/
115
116 /**
117 * i810_screen_off - turns off/on display
118 * @mmio: address of register space
119 * @mode: on or off
120 *
121 * DESCRIPTION:
122 * Blanks/unblanks the display
123 */
124 static void i810_screen_off(u8 __iomem *mmio, u8 mode)
125 {
126 u32 count = WAIT_COUNT;
127 u8 val;
128
129 i810_writeb(SR_INDEX, mmio, SR01);
130 val = i810_readb(SR_DATA, mmio);
131 val = (mode == OFF) ? val | SCR_OFF :
132 val & ~SCR_OFF;
133
134 while((i810_readw(DISP_SL, mmio) & 0xFFF) && count--);
135 i810_writeb(SR_INDEX, mmio, SR01);
136 i810_writeb(SR_DATA, mmio, val);
137 }
138
139 /**
140 * i810_dram_off - turns off/on dram refresh
141 * @mmio: address of register space
142 * @mode: on or off
143 *
144 * DESCRIPTION:
145 * Turns off DRAM refresh. Must be off for only 2 vsyncs
146 * before data becomes corrupt
147 */
148 static void i810_dram_off(u8 __iomem *mmio, u8 mode)
149 {
150 u8 val;
151
152 val = i810_readb(DRAMCH, mmio);
153 val &= DRAM_OFF;
154 val = (mode == OFF) ? val : val | DRAM_ON;
155 i810_writeb(DRAMCH, mmio, val);
156 }
157
158 /**
159 * i810_protect_regs - allows rw/ro mode of certain VGA registers
160 * @mmio: address of register space
161 * @mode: protect/unprotect
162 *
163 * DESCRIPTION:
164 * The IBM VGA standard allows protection of certain VGA registers.
165 * This will protect or unprotect them.
166 */
167 static void i810_protect_regs(u8 __iomem *mmio, int mode)
168 {
169 u8 reg;
170
171 i810_writeb(CR_INDEX_CGA, mmio, CR11);
172 reg = i810_readb(CR_DATA_CGA, mmio);
173 reg = (mode == OFF) ? reg & ~0x80 :
174 reg | 0x80;
175
176 i810_writeb(CR_INDEX_CGA, mmio, CR11);
177 i810_writeb(CR_DATA_CGA, mmio, reg);
178 }
179
180 /**
181 * i810_load_pll - loads values for the hardware PLL clock
182 * @par: pointer to i810fb_par structure
183 *
184 * DESCRIPTION:
185 * Loads the P, M, and N registers.
186 */
187 static void i810_load_pll(struct i810fb_par *par)
188 {
189 u32 tmp1, tmp2;
190 u8 __iomem *mmio = par->mmio_start_virtual;
191
192 tmp1 = par->regs.M | par->regs.N << 16;
193 tmp2 = i810_readl(DCLK_2D, mmio);
194 tmp2 &= ~MN_MASK;
195 i810_writel(DCLK_2D, mmio, tmp1 | tmp2);
196
197 tmp1 = par->regs.P;
198 tmp2 = i810_readl(DCLK_0DS, mmio);
199 tmp2 &= ~(P_OR << 16);
200 i810_writel(DCLK_0DS, mmio, (tmp1 << 16) | tmp2);
201
202 i810_writeb(MSR_WRITE, mmio, par->regs.msr | 0xC8 | 1);
203
204 }
205
206 /**
207 * i810_load_vga - load standard VGA registers
208 * @par: pointer to i810fb_par structure
209 *
210 * DESCRIPTION:
211 * Load values to VGA registers
212 */
213 static void i810_load_vga(struct i810fb_par *par)
214 {
215 u8 __iomem *mmio = par->mmio_start_virtual;
216
217 /* interlace */
218 i810_writeb(CR_INDEX_CGA, mmio, CR70);
219 i810_writeb(CR_DATA_CGA, mmio, par->interlace);
220
221 i810_writeb(CR_INDEX_CGA, mmio, CR00);
222 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr00);
223 i810_writeb(CR_INDEX_CGA, mmio, CR01);
224 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr01);
225 i810_writeb(CR_INDEX_CGA, mmio, CR02);
226 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr02);
227 i810_writeb(CR_INDEX_CGA, mmio, CR03);
228 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr03);
229 i810_writeb(CR_INDEX_CGA, mmio, CR04);
230 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr04);
231 i810_writeb(CR_INDEX_CGA, mmio, CR05);
232 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr05);
233 i810_writeb(CR_INDEX_CGA, mmio, CR06);
234 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr06);
235 i810_writeb(CR_INDEX_CGA, mmio, CR09);
236 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr09);
237 i810_writeb(CR_INDEX_CGA, mmio, CR10);
238 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr10);
239 i810_writeb(CR_INDEX_CGA, mmio, CR11);
240 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr11);
241 i810_writeb(CR_INDEX_CGA, mmio, CR12);
242 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr12);
243 i810_writeb(CR_INDEX_CGA, mmio, CR15);
244 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr15);
245 i810_writeb(CR_INDEX_CGA, mmio, CR16);
246 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr16);
247 }
248
249 /**
250 * i810_load_vgax - load extended VGA registers
251 * @par: pointer to i810fb_par structure
252 *
253 * DESCRIPTION:
254 * Load values to extended VGA registers
255 */
256 static void i810_load_vgax(struct i810fb_par *par)
257 {
258 u8 __iomem *mmio = par->mmio_start_virtual;
259
260 i810_writeb(CR_INDEX_CGA, mmio, CR30);
261 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr30);
262 i810_writeb(CR_INDEX_CGA, mmio, CR31);
263 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr31);
264 i810_writeb(CR_INDEX_CGA, mmio, CR32);
265 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr32);
266 i810_writeb(CR_INDEX_CGA, mmio, CR33);
267 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr33);
268 i810_writeb(CR_INDEX_CGA, mmio, CR35);
269 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr35);
270 i810_writeb(CR_INDEX_CGA, mmio, CR39);
271 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr39);
272 }
273
274 /**
275 * i810_load_2d - load grahics registers
276 * @par: pointer to i810fb_par structure
277 *
278 * DESCRIPTION:
279 * Load values to graphics registers
280 */
281 static void i810_load_2d(struct i810fb_par *par)
282 {
283 u32 tmp;
284 u8 tmp8;
285 u8 __iomem *mmio = par->mmio_start_virtual;
286
287 i810_writel(FW_BLC, mmio, par->watermark);
288 tmp = i810_readl(PIXCONF, mmio);
289 tmp |= 1 | 1 << 20;
290 i810_writel(PIXCONF, mmio, tmp);
291
292 i810_writel(OVRACT, mmio, par->ovract);
293
294 i810_writeb(GR_INDEX, mmio, GR10);
295 tmp8 = i810_readb(GR_DATA, mmio);
296 tmp8 |= 2;
297 i810_writeb(GR_INDEX, mmio, GR10);
298 i810_writeb(GR_DATA, mmio, tmp8);
299 }
300
301 /**
302 * i810_hires - enables high resolution mode
303 * @mmio: address of register space
304 */
305 static void i810_hires(u8 __iomem *mmio)
306 {
307 u8 val;
308
309 i810_writeb(CR_INDEX_CGA, mmio, CR80);
310 val = i810_readb(CR_DATA_CGA, mmio);
311 i810_writeb(CR_INDEX_CGA, mmio, CR80);
312 i810_writeb(CR_DATA_CGA, mmio, val | 1);
313 }
314
315 /**
316 * i810_load_pitch - loads the characters per line of the display
317 * @par: pointer to i810fb_par structure
318 *
319 * DESCRIPTION:
320 * Loads the characters per line
321 */
322 static void i810_load_pitch(struct i810fb_par *par)
323 {
324 u32 tmp, pitch;
325 u8 val;
326 u8 __iomem *mmio = par->mmio_start_virtual;
327
328 pitch = par->pitch >> 3;
329 i810_writeb(SR_INDEX, mmio, SR01);
330 val = i810_readb(SR_DATA, mmio);
331 val &= 0xE0;
332 val |= 1 | 1 << 2;
333 i810_writeb(SR_INDEX, mmio, SR01);
334 i810_writeb(SR_DATA, mmio, val);
335
336 tmp = pitch & 0xFF;
337 i810_writeb(CR_INDEX_CGA, mmio, CR13);
338 i810_writeb(CR_DATA_CGA, mmio, (u8) tmp);
339
340 tmp = pitch >> 8;
341 i810_writeb(CR_INDEX_CGA, mmio, CR41);
342 val = i810_readb(CR_DATA_CGA, mmio) & ~0x0F;
343 i810_writeb(CR_INDEX_CGA, mmio, CR41);
344 i810_writeb(CR_DATA_CGA, mmio, (u8) tmp | val);
345 }
346
347 /**
348 * i810_load_color - loads the color depth of the display
349 * @par: pointer to i810fb_par structure
350 *
351 * DESCRIPTION:
352 * Loads the color depth of the display and the graphics engine
353 */
354 static void i810_load_color(struct i810fb_par *par)
355 {
356 u8 __iomem *mmio = par->mmio_start_virtual;
357 u32 reg1;
358 u16 reg2;
359
360 reg1 = i810_readl(PIXCONF, mmio) & ~(0xF0000 | 1 << 27);
361 reg2 = i810_readw(BLTCNTL, mmio) & ~0x30;
362
363 reg1 |= 0x8000 | par->pixconf;
364 reg2 |= par->bltcntl;
365 i810_writel(PIXCONF, mmio, reg1);
366 i810_writew(BLTCNTL, mmio, reg2);
367 }
368
369 /**
370 * i810_load_regs - loads all registers for the mode
371 * @par: pointer to i810fb_par structure
372 *
373 * DESCRIPTION:
374 * Loads registers
375 */
376 static void i810_load_regs(struct i810fb_par *par)
377 {
378 u8 __iomem *mmio = par->mmio_start_virtual;
379
380 i810_screen_off(mmio, OFF);
381 i810_protect_regs(mmio, OFF);
382 i810_dram_off(mmio, OFF);
383 i810_load_pll(par);
384 i810_load_vga(par);
385 i810_load_vgax(par);
386 i810_dram_off(mmio, ON);
387 i810_load_2d(par);
388 i810_hires(mmio);
389 i810_screen_off(mmio, ON);
390 i810_protect_regs(mmio, ON);
391 i810_load_color(par);
392 i810_load_pitch(par);
393 }
394
395 static void i810_write_dac(u8 regno, u8 red, u8 green, u8 blue,
396 u8 __iomem *mmio)
397 {
398 i810_writeb(CLUT_INDEX_WRITE, mmio, regno);
399 i810_writeb(CLUT_DATA, mmio, red);
400 i810_writeb(CLUT_DATA, mmio, green);
401 i810_writeb(CLUT_DATA, mmio, blue);
402 }
403
404 static void i810_read_dac(u8 regno, u8 *red, u8 *green, u8 *blue,
405 u8 __iomem *mmio)
406 {
407 i810_writeb(CLUT_INDEX_READ, mmio, regno);
408 *red = i810_readb(CLUT_DATA, mmio);
409 *green = i810_readb(CLUT_DATA, mmio);
410 *blue = i810_readb(CLUT_DATA, mmio);
411 }
412
413 /************************************************************
414 * VGA State Restore *
415 ************************************************************/
416 static void i810_restore_pll(struct i810fb_par *par)
417 {
418 u32 tmp1, tmp2;
419 u8 __iomem *mmio = par->mmio_start_virtual;
420
421 tmp1 = par->hw_state.dclk_2d;
422 tmp2 = i810_readl(DCLK_2D, mmio);
423 tmp1 &= ~MN_MASK;
424 tmp2 &= MN_MASK;
425 i810_writel(DCLK_2D, mmio, tmp1 | tmp2);
426
427 tmp1 = par->hw_state.dclk_1d;
428 tmp2 = i810_readl(DCLK_1D, mmio);
429 tmp1 &= ~MN_MASK;
430 tmp2 &= MN_MASK;
431 i810_writel(DCLK_1D, mmio, tmp1 | tmp2);
432
433 i810_writel(DCLK_0DS, mmio, par->hw_state.dclk_0ds);
434 }
435
436 static void i810_restore_dac(struct i810fb_par *par)
437 {
438 u32 tmp1, tmp2;
439 u8 __iomem *mmio = par->mmio_start_virtual;
440
441 tmp1 = par->hw_state.pixconf;
442 tmp2 = i810_readl(PIXCONF, mmio);
443 tmp1 &= DAC_BIT;
444 tmp2 &= ~DAC_BIT;
445 i810_writel(PIXCONF, mmio, tmp1 | tmp2);
446 }
447
448 static void i810_restore_vgax(struct i810fb_par *par)
449 {
450 u8 i, j;
451 u8 __iomem *mmio = par->mmio_start_virtual;
452
453 for (i = 0; i < 4; i++) {
454 i810_writeb(CR_INDEX_CGA, mmio, CR30+i);
455 i810_writeb(CR_DATA_CGA, mmio, *(&(par->hw_state.cr30) + i));
456 }
457 i810_writeb(CR_INDEX_CGA, mmio, CR35);
458 i810_writeb(CR_DATA_CGA, mmio, par->hw_state.cr35);
459 i810_writeb(CR_INDEX_CGA, mmio, CR39);
460 i810_writeb(CR_DATA_CGA, mmio, par->hw_state.cr39);
461 i810_writeb(CR_INDEX_CGA, mmio, CR41);
462 i810_writeb(CR_DATA_CGA, mmio, par->hw_state.cr39);
463
464 /*restore interlace*/
465 i810_writeb(CR_INDEX_CGA, mmio, CR70);
466 i = par->hw_state.cr70;
467 i &= INTERLACE_BIT;
468 j = i810_readb(CR_DATA_CGA, mmio);
469 i810_writeb(CR_INDEX_CGA, mmio, CR70);
470 i810_writeb(CR_DATA_CGA, mmio, j | i);
471
472 i810_writeb(CR_INDEX_CGA, mmio, CR80);
473 i810_writeb(CR_DATA_CGA, mmio, par->hw_state.cr80);
474 i810_writeb(MSR_WRITE, mmio, par->hw_state.msr);
475 i810_writeb(SR_INDEX, mmio, SR01);
476 i = (par->hw_state.sr01) & ~0xE0 ;
477 j = i810_readb(SR_DATA, mmio) & 0xE0;
478 i810_writeb(SR_INDEX, mmio, SR01);
479 i810_writeb(SR_DATA, mmio, i | j);
480 }
481
482 static void i810_restore_vga(struct i810fb_par *par)
483 {
484 u8 i;
485 u8 __iomem *mmio = par->mmio_start_virtual;
486
487 for (i = 0; i < 10; i++) {
488 i810_writeb(CR_INDEX_CGA, mmio, CR00 + i);
489 i810_writeb(CR_DATA_CGA, mmio, *((&par->hw_state.cr00) + i));
490 }
491 for (i = 0; i < 8; i++) {
492 i810_writeb(CR_INDEX_CGA, mmio, CR10 + i);
493 i810_writeb(CR_DATA_CGA, mmio, *((&par->hw_state.cr10) + i));
494 }
495 }
496
497 static void i810_restore_addr_map(struct i810fb_par *par)
498 {
499 u8 tmp;
500 u8 __iomem *mmio = par->mmio_start_virtual;
501
502 i810_writeb(GR_INDEX, mmio, GR10);
503 tmp = i810_readb(GR_DATA, mmio);
504 tmp &= ADDR_MAP_MASK;
505 tmp |= par->hw_state.gr10;
506 i810_writeb(GR_INDEX, mmio, GR10);
507 i810_writeb(GR_DATA, mmio, tmp);
508 }
509
510 static void i810_restore_2d(struct i810fb_par *par)
511 {
512 u32 tmp_long;
513 u16 tmp_word;
514 u8 __iomem *mmio = par->mmio_start_virtual;
515
516 tmp_word = i810_readw(BLTCNTL, mmio);
517 tmp_word &= ~(3 << 4);
518 tmp_word |= par->hw_state.bltcntl;
519 i810_writew(BLTCNTL, mmio, tmp_word);
520
521 i810_dram_off(mmio, OFF);
522 i810_writel(PIXCONF, mmio, par->hw_state.pixconf);
523 i810_dram_off(mmio, ON);
524
525 tmp_word = i810_readw(HWSTAM, mmio);
526 tmp_word &= 3 << 13;
527 tmp_word |= par->hw_state.hwstam;
528 i810_writew(HWSTAM, mmio, tmp_word);
529
530 tmp_long = i810_readl(FW_BLC, mmio);
531 tmp_long &= FW_BLC_MASK;
532 tmp_long |= par->hw_state.fw_blc;
533 i810_writel(FW_BLC, mmio, tmp_long);
534
535 i810_writel(HWS_PGA, mmio, par->hw_state.hws_pga);
536 i810_writew(IER, mmio, par->hw_state.ier);
537 i810_writew(IMR, mmio, par->hw_state.imr);
538 i810_writel(DPLYSTAS, mmio, par->hw_state.dplystas);
539 }
540
541 static void i810_restore_vga_state(struct i810fb_par *par)
542 {
543 u8 __iomem *mmio = par->mmio_start_virtual;
544
545 i810_screen_off(mmio, OFF);
546 i810_protect_regs(mmio, OFF);
547 i810_dram_off(mmio, OFF);
548 i810_restore_pll(par);
549 i810_restore_dac(par);
550 i810_restore_vga(par);
551 i810_restore_vgax(par);
552 i810_restore_addr_map(par);
553 i810_dram_off(mmio, ON);
554 i810_restore_2d(par);
555 i810_screen_off(mmio, ON);
556 i810_protect_regs(mmio, ON);
557 }
558
559 /***********************************************************************
560 * VGA State Save *
561 ***********************************************************************/
562
563 static void i810_save_vgax(struct i810fb_par *par)
564 {
565 u8 i;
566 u8 __iomem *mmio = par->mmio_start_virtual;
567
568 for (i = 0; i < 4; i++) {
569 i810_writeb(CR_INDEX_CGA, mmio, CR30 + i);
570 *(&(par->hw_state.cr30) + i) = i810_readb(CR_DATA_CGA, mmio);
571 }
572 i810_writeb(CR_INDEX_CGA, mmio, CR35);
573 par->hw_state.cr35 = i810_readb(CR_DATA_CGA, mmio);
574 i810_writeb(CR_INDEX_CGA, mmio, CR39);
575 par->hw_state.cr39 = i810_readb(CR_DATA_CGA, mmio);
576 i810_writeb(CR_INDEX_CGA, mmio, CR41);
577 par->hw_state.cr41 = i810_readb(CR_DATA_CGA, mmio);
578 i810_writeb(CR_INDEX_CGA, mmio, CR70);
579 par->hw_state.cr70 = i810_readb(CR_DATA_CGA, mmio);
580 par->hw_state.msr = i810_readb(MSR_READ, mmio);
581 i810_writeb(CR_INDEX_CGA, mmio, CR80);
582 par->hw_state.cr80 = i810_readb(CR_DATA_CGA, mmio);
583 i810_writeb(SR_INDEX, mmio, SR01);
584 par->hw_state.sr01 = i810_readb(SR_DATA, mmio);
585 }
586
587 static void i810_save_vga(struct i810fb_par *par)
588 {
589 u8 i;
590 u8 __iomem *mmio = par->mmio_start_virtual;
591
592 for (i = 0; i < 10; i++) {
593 i810_writeb(CR_INDEX_CGA, mmio, CR00 + i);
594 *((&par->hw_state.cr00) + i) = i810_readb(CR_DATA_CGA, mmio);
595 }
596 for (i = 0; i < 8; i++) {
597 i810_writeb(CR_INDEX_CGA, mmio, CR10 + i);
598 *((&par->hw_state.cr10) + i) = i810_readb(CR_DATA_CGA, mmio);
599 }
600 }
601
602 static void i810_save_2d(struct i810fb_par *par)
603 {
604 u8 __iomem *mmio = par->mmio_start_virtual;
605
606 par->hw_state.dclk_2d = i810_readl(DCLK_2D, mmio);
607 par->hw_state.dclk_1d = i810_readl(DCLK_1D, mmio);
608 par->hw_state.dclk_0ds = i810_readl(DCLK_0DS, mmio);
609 par->hw_state.pixconf = i810_readl(PIXCONF, mmio);
610 par->hw_state.fw_blc = i810_readl(FW_BLC, mmio);
611 par->hw_state.bltcntl = i810_readw(BLTCNTL, mmio);
612 par->hw_state.hwstam = i810_readw(HWSTAM, mmio);
613 par->hw_state.hws_pga = i810_readl(HWS_PGA, mmio);
614 par->hw_state.ier = i810_readw(IER, mmio);
615 par->hw_state.imr = i810_readw(IMR, mmio);
616 par->hw_state.dplystas = i810_readl(DPLYSTAS, mmio);
617 }
618
619 static void i810_save_vga_state(struct i810fb_par *par)
620 {
621 i810_save_vga(par);
622 i810_save_vgax(par);
623 i810_save_2d(par);
624 }
625
626 /************************************************************
627 * Helpers *
628 ************************************************************/
629 /**
630 * get_line_length - calculates buffer pitch in bytes
631 * @par: pointer to i810fb_par structure
632 * @xres_virtual: virtual resolution of the frame
633 * @bpp: bits per pixel
634 *
635 * DESCRIPTION:
636 * Calculates buffer pitch in bytes.
637 */
638 static u32 get_line_length(struct i810fb_par *par, int xres_virtual, int bpp)
639 {
640 u32 length;
641
642 length = xres_virtual*bpp;
643 length = (length+31)&-32;
644 length >>= 3;
645 return length;
646 }
647
648 /**
649 * i810_calc_dclk - calculates the P, M, and N values of a pixelclock value
650 * @freq: target pixelclock in picoseconds
651 * @m: where to write M register
652 * @n: where to write N register
653 * @p: where to write P register
654 *
655 * DESCRIPTION:
656 * Based on the formula Freq_actual = (4*M*Freq_ref)/(N^P)
657 * Repeatedly computes the Freq until the actual Freq is equal to
658 * the target Freq or until the loop count is zero. In the latter
659 * case, the actual frequency nearest the target will be used.
660 */
661 static void i810_calc_dclk(u32 freq, u32 *m, u32 *n, u32 *p)
662 {
663 u32 m_reg, n_reg, p_divisor, n_target_max;
664 u32 m_target, n_target, p_target, n_best, m_best, mod;
665 u32 f_out, target_freq, diff = 0, mod_min, diff_min;
666
667 diff_min = mod_min = 0xFFFFFFFF;
668 n_best = m_best = m_target = f_out = 0;
669
670 target_freq = freq;
671 n_target_max = 30;
672
673 /*
674 * find P such that target freq is 16x reference freq (Hz).
675 */
676 p_divisor = 1;
677 p_target = 0;
678 while(!((1000000 * p_divisor)/(16 * 24 * target_freq)) &&
679 p_divisor <= 32) {
680 p_divisor <<= 1;
681 p_target++;
682 }
683
684 n_reg = m_reg = n_target = 3;
685 while (diff_min && mod_min && (n_target < n_target_max)) {
686 f_out = (p_divisor * n_reg * 1000000)/(4 * 24 * m_reg);
687 mod = (p_divisor * n_reg * 1000000) % (4 * 24 * m_reg);
688 m_target = m_reg;
689 n_target = n_reg;
690 if (f_out <= target_freq) {
691 n_reg++;
692 diff = target_freq - f_out;
693 } else {
694 m_reg++;
695 diff = f_out - target_freq;
696 }
697
698 if (diff_min > diff) {
699 diff_min = diff;
700 n_best = n_target;
701 m_best = m_target;
702 }
703
704 if (!diff && mod_min > mod) {
705 mod_min = mod;
706 n_best = n_target;
707 m_best = m_target;
708 }
709 }
710 if (m) *m = (m_best - 2) & 0x3FF;
711 if (n) *n = (n_best - 2) & 0x3FF;
712 if (p) *p = (p_target << 4);
713 }
714
715 /*************************************************************
716 * Hardware Cursor Routines *
717 *************************************************************/
718
719 /**
720 * i810_enable_cursor - show or hide the hardware cursor
721 * @mmio: address of register space
722 * @mode: show (1) or hide (0)
723 *
724 * Description:
725 * Shows or hides the hardware cursor
726 */
727 static void i810_enable_cursor(u8 __iomem *mmio, int mode)
728 {
729 u32 temp;
730
731 temp = i810_readl(PIXCONF, mmio);
732 temp = (mode == ON) ? temp | CURSOR_ENABLE_MASK :
733 temp & ~CURSOR_ENABLE_MASK;
734
735 i810_writel(PIXCONF, mmio, temp);
736 }
737
738 static void i810_reset_cursor_image(struct i810fb_par *par)
739 {
740 u8 __iomem *addr = par->cursor_heap.virtual;
741 int i, j;
742
743 for (i = 64; i--; ) {
744 for (j = 0; j < 8; j++) {
745 i810_writeb(j, addr, 0xff);
746 i810_writeb(j+8, addr, 0x00);
747 }
748 addr +=16;
749 }
750 }
751
752 static void i810_load_cursor_image(int width, int height, u8 *data,
753 struct i810fb_par *par)
754 {
755 u8 __iomem *addr = par->cursor_heap.virtual;
756 int i, j, w = width/8;
757 int mod = width % 8, t_mask, d_mask;
758
759 t_mask = 0xff >> mod;
760 d_mask = ~(0xff >> mod);
761 for (i = height; i--; ) {
762 for (j = 0; j < w; j++) {
763 i810_writeb(j+0, addr, 0x00);
764 i810_writeb(j+8, addr, *data++);
765 }
766 if (mod) {
767 i810_writeb(j+0, addr, t_mask);
768 i810_writeb(j+8, addr, *data++ & d_mask);
769 }
770 addr += 16;
771 }
772 }
773
774 static void i810_load_cursor_colors(int fg, int bg, struct fb_info *info)
775 {
776 struct i810fb_par *par = (struct i810fb_par *) info->par;
777 u8 __iomem *mmio = par->mmio_start_virtual;
778 u8 red, green, blue, trans, temp;
779
780 i810fb_getcolreg(bg, &red, &green, &blue, &trans, info);
781
782 temp = i810_readb(PIXCONF1, mmio);
783 i810_writeb(PIXCONF1, mmio, temp | EXTENDED_PALETTE);
784
785 i810_write_dac(4, red, green, blue, mmio);
786
787 i810_writeb(PIXCONF1, mmio, temp);
788
789 i810fb_getcolreg(fg, &red, &green, &blue, &trans, info);
790 temp = i810_readb(PIXCONF1, mmio);
791 i810_writeb(PIXCONF1, mmio, temp | EXTENDED_PALETTE);
792
793 i810_write_dac(5, red, green, blue, mmio);
794
795 i810_writeb(PIXCONF1, mmio, temp);
796 }
797
798 /**
799 * i810_init_cursor - initializes the cursor
800 * @par: pointer to i810fb_par structure
801 *
802 * DESCRIPTION:
803 * Initializes the cursor registers
804 */
805 static void i810_init_cursor(struct i810fb_par *par)
806 {
807 u8 __iomem *mmio = par->mmio_start_virtual;
808
809 i810_enable_cursor(mmio, OFF);
810 i810_writel(CURBASE, mmio, par->cursor_heap.physical);
811 i810_writew(CURCNTR, mmio, COORD_ACTIVE | CURSOR_MODE_64_XOR);
812 }
813
814 /*********************************************************************
815 * Framebuffer hook helpers *
816 *********************************************************************/
817 /**
818 * i810_round_off - Round off values to capability of hardware
819 * @var: pointer to fb_var_screeninfo structure
820 *
821 * DESCRIPTION:
822 * @var contains user-defined information for the mode to be set.
823 * This will try modify those values to ones nearest the
824 * capability of the hardware
825 */
826 static void i810_round_off(struct fb_var_screeninfo *var)
827 {
828 u32 xres, yres, vxres, vyres;
829
830 /*
831 * Presently supports only these configurations
832 */
833
834 xres = var->xres;
835 yres = var->yres;
836 vxres = var->xres_virtual;
837 vyres = var->yres_virtual;
838
839 var->bits_per_pixel += 7;
840 var->bits_per_pixel &= ~7;
841
842 if (var->bits_per_pixel < 8)
843 var->bits_per_pixel = 8;
844 if (var->bits_per_pixel > 32)
845 var->bits_per_pixel = 32;
846
847 round_off_xres(&xres);
848 if (xres < 40)
849 xres = 40;
850 if (xres > 2048)
851 xres = 2048;
852 xres = (xres + 7) & ~7;
853
854 if (vxres < xres)
855 vxres = xres;
856
857 round_off_yres(&xres, &yres);
858 if (yres < 1)
859 yres = 1;
860 if (yres >= 2048)
861 yres = 2048;
862
863 if (vyres < yres)
864 vyres = yres;
865
866 if (var->bits_per_pixel == 32)
867 var->accel_flags = 0;
868
869 /* round of horizontal timings to nearest 8 pixels */
870 var->left_margin = (var->left_margin + 4) & ~7;
871 var->right_margin = (var->right_margin + 4) & ~7;
872 var->hsync_len = (var->hsync_len + 4) & ~7;
873
874 if (var->vmode & FB_VMODE_INTERLACED) {
875 if (!((yres + var->upper_margin + var->vsync_len +
876 var->lower_margin) & 1))
877 var->upper_margin++;
878 }
879
880 var->xres = xres;
881 var->yres = yres;
882 var->xres_virtual = vxres;
883 var->yres_virtual = vyres;
884 }
885
886 /**
887 * set_color_bitfields - sets rgba fields
888 * @var: pointer to fb_var_screeninfo
889 *
890 * DESCRIPTION:
891 * The length, offset and ordering for each color field
892 * (red, green, blue) will be set as specified
893 * by the hardware
894 */
895 static void set_color_bitfields(struct fb_var_screeninfo *var)
896 {
897 switch (var->bits_per_pixel) {
898 case 8:
899 var->red.offset = 0;
900 var->red.length = 8;
901 var->green.offset = 0;
902 var->green.length = 8;
903 var->blue.offset = 0;
904 var->blue.length = 8;
905 var->transp.offset = 0;
906 var->transp.length = 0;
907 break;
908 case 16:
909 var->green.length = (var->green.length == 5) ? 5 : 6;
910 var->red.length = 5;
911 var->blue.length = 5;
912 var->transp.length = 6 - var->green.length;
913 var->blue.offset = 0;
914 var->green.offset = 5;
915 var->red.offset = 5 + var->green.length;
916 var->transp.offset = (5 + var->red.offset) & 15;
917 break;
918 case 24: /* RGB 888 */
919 case 32: /* RGBA 8888 */
920 var->red.offset = 16;
921 var->red.length = 8;
922 var->green.offset = 8;
923 var->green.length = 8;
924 var->blue.offset = 0;
925 var->blue.length = 8;
926 var->transp.length = var->bits_per_pixel - 24;
927 var->transp.offset = (var->transp.length) ? 24 : 0;
928 break;
929 }
930 var->red.msb_right = 0;
931 var->green.msb_right = 0;
932 var->blue.msb_right = 0;
933 var->transp.msb_right = 0;
934 }
935
936 /**
937 * i810_check_params - check if contents in var are valid
938 * @var: pointer to fb_var_screeninfo
939 * @info: pointer to fb_info
940 *
941 * DESCRIPTION:
942 * This will check if the framebuffer size is sufficient
943 * for the current mode and if the user's monitor has the
944 * required specifications to display the current mode.
945 */
946 static int i810_check_params(struct fb_var_screeninfo *var,
947 struct fb_info *info)
948 {
949 struct i810fb_par *par = (struct i810fb_par *) info->par;
950 int line_length, vidmem;
951 u32 xres, yres, vxres, vyres;
952
953 xres = var->xres;
954 yres = var->yres;
955 vxres = var->xres_virtual;
956 vyres = var->yres_virtual;
957
958 /*
959 * Memory limit
960 */
961 line_length = get_line_length(par, vxres,
962 var->bits_per_pixel);
963
964 vidmem = line_length*vyres;
965 if (vidmem > par->fb.size) {
966 vyres = par->fb.size/line_length;
967 if (vyres < yres) {
968 vyres = yres;
969 vxres = par->fb.size/vyres;
970 vxres /= var->bits_per_pixel >> 3;
971 line_length = get_line_length(par, vxres,
972 var->bits_per_pixel);
973 vidmem = line_length * yres;
974 if (vxres < xres) {
975 printk("i810fb: required video memory, "
976 "%d bytes, for %dx%d-%d (virtual) "
977 "is out of range\n",
978 vidmem, vxres, vyres,
979 var->bits_per_pixel);
980 return -ENOMEM;
981 }
982 }
983 }
984 /*
985 * Monitor limit
986 */
987 switch (var->bits_per_pixel) {
988 case 8:
989 info->monspecs.dclkmax = 234000000;
990 break;
991 case 16:
992 info->monspecs.dclkmax = 229000000;
993 break;
994 case 24:
995 case 32:
996 info->monspecs.dclkmax = 204000000;
997 break;
998 }
999 info->monspecs.dclkmin = 15000000;
1000
1001 if (fb_validate_mode(var, info)) {
1002 if (fb_get_mode(FB_MAXTIMINGS, 0, var, info))
1003 return -EINVAL;
1004 }
1005
1006 var->xres = xres;
1007 var->yres = yres;
1008 var->xres_virtual = vxres;
1009 var->yres_virtual = vyres;
1010 return 0;
1011 }
1012
1013 /**
1014 * encode_fix - fill up fb_fix_screeninfo structure
1015 * @fix: pointer to fb_fix_screeninfo
1016 * @info: pointer to fb_info
1017 *
1018 * DESCRIPTION:
1019 * This will set up parameters that are unmodifiable by the user.
1020 */
1021 static int encode_fix(struct fb_fix_screeninfo *fix, struct fb_info *info)
1022 {
1023 struct i810fb_par *par = (struct i810fb_par *) info->par;
1024
1025 memset(fix, 0, sizeof(struct fb_fix_screeninfo));
1026
1027 strcpy(fix->id, "I810");
1028 fix->smem_start = par->fb.physical;
1029 fix->smem_len = par->fb.size;
1030 fix->type = FB_TYPE_PACKED_PIXELS;
1031 fix->type_aux = 0;
1032 fix->xpanstep = 8;
1033 fix->ypanstep = 1;
1034
1035 switch (info->var.bits_per_pixel) {
1036 case 8:
1037 fix->visual = FB_VISUAL_PSEUDOCOLOR;
1038 break;
1039 case 16:
1040 case 24:
1041 case 32:
1042 if (info->var.nonstd)
1043 fix->visual = FB_VISUAL_DIRECTCOLOR;
1044 else
1045 fix->visual = FB_VISUAL_TRUECOLOR;
1046 break;
1047 default:
1048 return -EINVAL;
1049 }
1050 fix->ywrapstep = 0;
1051 fix->line_length = par->pitch;
1052 fix->mmio_start = par->mmio_start_phys;
1053 fix->mmio_len = MMIO_SIZE;
1054 fix->accel = FB_ACCEL_I810;
1055
1056 return 0;
1057 }
1058
1059 /**
1060 * decode_var - modify par according to contents of var
1061 * @var: pointer to fb_var_screeninfo
1062 * @par: pointer to i810fb_par
1063 *
1064 * DESCRIPTION:
1065 * Based on the contents of @var, @par will be dynamically filled up.
1066 * @par contains all information necessary to modify the hardware.
1067 */
1068 static void decode_var(const struct fb_var_screeninfo *var,
1069 struct i810fb_par *par)
1070 {
1071 u32 xres, yres, vxres, vyres;
1072
1073 xres = var->xres;
1074 yres = var->yres;
1075 vxres = var->xres_virtual;
1076 vyres = var->yres_virtual;
1077
1078 switch (var->bits_per_pixel) {
1079 case 8:
1080 par->pixconf = PIXCONF8;
1081 par->bltcntl = 0;
1082 par->depth = 1;
1083 par->blit_bpp = BPP8;
1084 break;
1085 case 16:
1086 if (var->green.length == 5)
1087 par->pixconf = PIXCONF15;
1088 else
1089 par->pixconf = PIXCONF16;
1090 par->bltcntl = 16;
1091 par->depth = 2;
1092 par->blit_bpp = BPP16;
1093 break;
1094 case 24:
1095 par->pixconf = PIXCONF24;
1096 par->bltcntl = 32;
1097 par->depth = 3;
1098 par->blit_bpp = BPP24;
1099 break;
1100 case 32:
1101 par->pixconf = PIXCONF32;
1102 par->bltcntl = 0;
1103 par->depth = 4;
1104 par->blit_bpp = 3 << 24;
1105 break;
1106 }
1107 if (var->nonstd && var->bits_per_pixel != 8)
1108 par->pixconf |= 1 << 27;
1109
1110 i810_calc_dclk(var->pixclock, &par->regs.M,
1111 &par->regs.N, &par->regs.P);
1112 i810fb_encode_registers(var, par, xres, yres);
1113
1114 par->watermark = i810_get_watermark(var, par);
1115 par->pitch = get_line_length(par, vxres, var->bits_per_pixel);
1116 }
1117
1118 /**
1119 * i810fb_getcolreg - gets red, green and blue values of the hardware DAC
1120 * @regno: DAC index
1121 * @red: red
1122 * @green: green
1123 * @blue: blue
1124 * @transp: transparency (alpha)
1125 * @info: pointer to fb_info
1126 *
1127 * DESCRIPTION:
1128 * Gets the red, green and blue values of the hardware DAC as pointed by @regno
1129 * and writes them to @red, @green and @blue respectively
1130 */
1131 static int i810fb_getcolreg(u8 regno, u8 *red, u8 *green, u8 *blue,
1132 u8 *transp, struct fb_info *info)
1133 {
1134 struct i810fb_par *par = (struct i810fb_par *) info->par;
1135 u8 __iomem *mmio = par->mmio_start_virtual;
1136 u8 temp;
1137
1138 if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
1139 if ((info->var.green.length == 5 && regno > 31) ||
1140 (info->var.green.length == 6 && regno > 63))
1141 return 1;
1142 }
1143
1144 temp = i810_readb(PIXCONF1, mmio);
1145 i810_writeb(PIXCONF1, mmio, temp & ~EXTENDED_PALETTE);
1146
1147 if (info->fix.visual == FB_VISUAL_DIRECTCOLOR &&
1148 info->var.green.length == 5)
1149 i810_read_dac(regno * 8, red, green, blue, mmio);
1150
1151 else if (info->fix.visual == FB_VISUAL_DIRECTCOLOR &&
1152 info->var.green.length == 6) {
1153 u8 tmp;
1154
1155 i810_read_dac(regno * 8, red, &tmp, blue, mmio);
1156 i810_read_dac(regno * 4, &tmp, green, &tmp, mmio);
1157 }
1158 else
1159 i810_read_dac(regno, red, green, blue, mmio);
1160
1161 *transp = 0;
1162 i810_writeb(PIXCONF1, mmio, temp);
1163
1164 return 0;
1165 }
1166
1167 /******************************************************************
1168 * Framebuffer device-specific hooks *
1169 ******************************************************************/
1170
1171 static int i810fb_open(struct fb_info *info, int user)
1172 {
1173 struct i810fb_par *par = (struct i810fb_par *) info->par;
1174 u32 count = atomic_read(&par->use_count);
1175
1176 if (count == 0) {
1177 memset(&par->state, 0, sizeof(struct vgastate));
1178 par->state.flags = VGA_SAVE_CMAP;
1179 par->state.vgabase = par->mmio_start_virtual;
1180 save_vga(&par->state);
1181
1182 i810_save_vga_state(par);
1183 }
1184
1185 atomic_inc(&par->use_count);
1186
1187 return 0;
1188 }
1189
1190 static int i810fb_release(struct fb_info *info, int user)
1191 {
1192 struct i810fb_par *par = (struct i810fb_par *) info->par;
1193 u32 count;
1194
1195 count = atomic_read(&par->use_count);
1196 if (count == 0)
1197 return -EINVAL;
1198
1199 if (count == 1) {
1200 i810_restore_vga_state(par);
1201 restore_vga(&par->state);
1202 }
1203
1204 atomic_dec(&par->use_count);
1205
1206 return 0;
1207 }
1208
1209
1210 static int i810fb_setcolreg(unsigned regno, unsigned red, unsigned green,
1211 unsigned blue, unsigned transp,
1212 struct fb_info *info)
1213 {
1214 struct i810fb_par *par = (struct i810fb_par *) info->par;
1215 u8 __iomem *mmio = par->mmio_start_virtual;
1216 u8 temp;
1217 int i;
1218
1219 if (regno > 255) return 1;
1220
1221 if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
1222 if ((info->var.green.length == 5 && regno > 31) ||
1223 (info->var.green.length == 6 && regno > 63))
1224 return 1;
1225 }
1226
1227 if (info->var.grayscale)
1228 red = green = blue = (19595 * red + 38470 * green +
1229 7471 * blue) >> 16;
1230
1231 temp = i810_readb(PIXCONF1, mmio);
1232 i810_writeb(PIXCONF1, mmio, temp & ~EXTENDED_PALETTE);
1233
1234 if (info->fix.visual == FB_VISUAL_DIRECTCOLOR &&
1235 info->var.green.length == 5) {
1236 for (i = 0; i < 8; i++)
1237 i810_write_dac((u8) (regno * 8) + i, (u8) red,
1238 (u8) green, (u8) blue, mmio);
1239 } else if (info->fix.visual == FB_VISUAL_DIRECTCOLOR &&
1240 info->var.green.length == 6) {
1241 u8 r, g, b;
1242
1243 if (regno < 32) {
1244 for (i = 0; i < 8; i++)
1245 i810_write_dac((u8) (regno * 8) + i,
1246 (u8) red, (u8) green,
1247 (u8) blue, mmio);
1248 }
1249 i810_read_dac((u8) (regno*4), &r, &g, &b, mmio);
1250 for (i = 0; i < 4; i++)
1251 i810_write_dac((u8) (regno*4) + i, r, (u8) green,
1252 b, mmio);
1253 } else if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR) {
1254 i810_write_dac((u8) regno, (u8) red, (u8) green,
1255 (u8) blue, mmio);
1256 }
1257
1258 i810_writeb(PIXCONF1, mmio, temp);
1259
1260 if (regno < 16) {
1261 switch (info->var.bits_per_pixel) {
1262 case 16:
1263 if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
1264 if (info->var.green.length == 5)
1265 ((u32 *)info->pseudo_palette)[regno] =
1266 (regno << 10) | (regno << 5) |
1267 regno;
1268 else
1269 ((u32 *)info->pseudo_palette)[regno] =
1270 (regno << 11) | (regno << 5) |
1271 regno;
1272 } else {
1273 if (info->var.green.length == 5) {
1274 /* RGB 555 */
1275 ((u32 *)info->pseudo_palette)[regno] =
1276 ((red & 0xf800) >> 1) |
1277 ((green & 0xf800) >> 6) |
1278 ((blue & 0xf800) >> 11);
1279 } else {
1280 /* RGB 565 */
1281 ((u32 *)info->pseudo_palette)[regno] =
1282 (red & 0xf800) |
1283 ((green & 0xf800) >> 5) |
1284 ((blue & 0xf800) >> 11);
1285 }
1286 }
1287 break;
1288 case 24: /* RGB 888 */
1289 case 32: /* RGBA 8888 */
1290 if (info->fix.visual == FB_VISUAL_DIRECTCOLOR)
1291 ((u32 *)info->pseudo_palette)[regno] =
1292 (regno << 16) | (regno << 8) |
1293 regno;
1294 else
1295 ((u32 *)info->pseudo_palette)[regno] =
1296 ((red & 0xff00) << 8) |
1297 (green & 0xff00) |
1298 ((blue & 0xff00) >> 8);
1299 break;
1300 }
1301 }
1302 return 0;
1303 }
1304
1305 static int i810fb_pan_display(struct fb_var_screeninfo *var,
1306 struct fb_info *info)
1307 {
1308 struct i810fb_par *par = (struct i810fb_par *) info->par;
1309 u32 total;
1310
1311 total = var->xoffset * par->depth +
1312 var->yoffset * info->fix.line_length;
1313 i810fb_load_front(total, info);
1314
1315 return 0;
1316 }
1317
1318 static int i810fb_blank (int blank_mode, struct fb_info *info)
1319 {
1320 struct i810fb_par *par = (struct i810fb_par *) info->par;
1321 u8 __iomem *mmio = par->mmio_start_virtual;
1322 int mode = 0, pwr, scr_off = 0;
1323
1324 pwr = i810_readl(PWR_CLKC, mmio);
1325
1326 switch (blank_mode) {
1327 case FB_BLANK_UNBLANK:
1328 mode = POWERON;
1329 pwr |= 1;
1330 scr_off = ON;
1331 break;
1332 case FB_BLANK_NORMAL:
1333 mode = POWERON;
1334 pwr |= 1;
1335 scr_off = OFF;
1336 break;
1337 case FB_BLANK_VSYNC_SUSPEND:
1338 mode = STANDBY;
1339 pwr |= 1;
1340 scr_off = OFF;
1341 break;
1342 case FB_BLANK_HSYNC_SUSPEND:
1343 mode = SUSPEND;
1344 pwr |= 1;
1345 scr_off = OFF;
1346 break;
1347 case FB_BLANK_POWERDOWN:
1348 mode = POWERDOWN;
1349 pwr &= ~1;
1350 scr_off = OFF;
1351 break;
1352 default:
1353 return -EINVAL;
1354 }
1355
1356 i810_screen_off(mmio, scr_off);
1357 i810_writel(HVSYNC, mmio, mode);
1358 i810_writel(PWR_CLKC, mmio, pwr);
1359
1360 return 0;
1361 }
1362
1363 static int i810fb_set_par(struct fb_info *info)
1364 {
1365 struct i810fb_par *par = (struct i810fb_par *) info->par;
1366
1367 decode_var(&info->var, par);
1368 i810_load_regs(par);
1369 i810_init_cursor(par);
1370
1371 encode_fix(&info->fix, info);
1372
1373 if (info->var.accel_flags && !(par->dev_flags & LOCKUP)) {
1374 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1375 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1376 FBINFO_HWACCEL_IMAGEBLIT;
1377 info->pixmap.scan_align = 2;
1378 } else {
1379 info->pixmap.scan_align = 1;
1380 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1381 }
1382 return 0;
1383 }
1384
1385 static int i810fb_check_var(struct fb_var_screeninfo *var,
1386 struct fb_info *info)
1387 {
1388 int err;
1389
1390 if (IS_DVT) {
1391 var->vmode &= ~FB_VMODE_MASK;
1392 var->vmode |= FB_VMODE_NONINTERLACED;
1393 }
1394 if (var->vmode & FB_VMODE_DOUBLE) {
1395 var->vmode &= ~FB_VMODE_MASK;
1396 var->vmode |= FB_VMODE_NONINTERLACED;
1397 }
1398
1399 i810_round_off(var);
1400 if ((err = i810_check_params(var, info)))
1401 return err;
1402
1403 i810fb_fill_var_timings(var);
1404 set_color_bitfields(var);
1405 return 0;
1406 }
1407
1408 static int i810fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1409 {
1410 struct i810fb_par *par = (struct i810fb_par *)info->par;
1411 u8 __iomem *mmio = par->mmio_start_virtual;
1412
1413 if (!(par->dev_flags & USE_HWCUR) || !info->var.accel_flags ||
1414 par->dev_flags & LOCKUP)
1415 return soft_cursor(info, cursor);
1416
1417 if (cursor->image.width > 64 || cursor->image.height > 64)
1418 return -ENXIO;
1419
1420 if ((i810_readl(CURBASE, mmio) & 0xf) != par->cursor_heap.physical) {
1421 i810_init_cursor(par);
1422 cursor->set |= FB_CUR_SETALL;
1423 }
1424
1425 i810_enable_cursor(mmio, OFF);
1426
1427 if (cursor->set & FB_CUR_SETPOS) {
1428 u32 tmp;
1429
1430 tmp = (cursor->image.dx - info->var.xoffset) & 0xffff;
1431 tmp |= (cursor->image.dy - info->var.yoffset) << 16;
1432 i810_writel(CURPOS, mmio, tmp);
1433 }
1434
1435 if (cursor->set & FB_CUR_SETSIZE)
1436 i810_reset_cursor_image(par);
1437
1438 if (cursor->set & FB_CUR_SETCMAP)
1439 i810_load_cursor_colors(cursor->image.fg_color,
1440 cursor->image.bg_color,
1441 info);
1442
1443 if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1444 int size = ((cursor->image.width + 7) >> 3) *
1445 cursor->image.height;
1446 int i;
1447 u8 *data = kmalloc(64 * 8, GFP_KERNEL);
1448
1449 if (data == NULL)
1450 return -ENOMEM;
1451
1452 switch (cursor->rop) {
1453 case ROP_XOR:
1454 for (i = 0; i < size; i++)
1455 data[i] = cursor->image.data[i] ^ cursor->mask[i];
1456 break;
1457 case ROP_COPY:
1458 default:
1459 for (i = 0; i < size; i++)
1460 data[i] = cursor->image.data[i] & cursor->mask[i];
1461 break;
1462 }
1463
1464 i810_load_cursor_image(cursor->image.width,
1465 cursor->image.height, data,
1466 par);
1467 kfree(data);
1468 }
1469
1470 if (cursor->enable)
1471 i810_enable_cursor(mmio, ON);
1472
1473 return 0;
1474 }
1475
1476 static struct fb_ops i810fb_ops __devinitdata = {
1477 .owner = THIS_MODULE,
1478 .fb_open = i810fb_open,
1479 .fb_release = i810fb_release,
1480 .fb_check_var = i810fb_check_var,
1481 .fb_set_par = i810fb_set_par,
1482 .fb_setcolreg = i810fb_setcolreg,
1483 .fb_blank = i810fb_blank,
1484 .fb_pan_display = i810fb_pan_display,
1485 .fb_fillrect = i810fb_fillrect,
1486 .fb_copyarea = i810fb_copyarea,
1487 .fb_imageblit = i810fb_imageblit,
1488 .fb_cursor = i810fb_cursor,
1489 .fb_sync = i810fb_sync,
1490 };
1491
1492 /***********************************************************************
1493 * Power Management *
1494 ***********************************************************************/
1495 static int i810fb_suspend(struct pci_dev *dev, pm_message_t state)
1496 {
1497 struct fb_info *info = pci_get_drvdata(dev);
1498 struct i810fb_par *par = (struct i810fb_par *) info->par;
1499 int blank = 0, prev_state = par->cur_state;
1500
1501 if (state == prev_state)
1502 return 0;
1503
1504 par->cur_state = state;
1505
1506 switch (state) {
1507 case 1:
1508 blank = VESA_VSYNC_SUSPEND;
1509 break;
1510 case 2:
1511 blank = VESA_HSYNC_SUSPEND;
1512 break;
1513 case 3:
1514 blank = VESA_POWERDOWN;
1515 break;
1516 default:
1517 return -EINVAL;
1518 }
1519 info->fbops->fb_blank(blank, info);
1520
1521 if (!prev_state) {
1522 agp_unbind_memory(par->i810_gtt.i810_fb_memory);
1523 agp_unbind_memory(par->i810_gtt.i810_cursor_memory);
1524 pci_disable_device(dev);
1525 }
1526 pci_save_state(dev);
1527 pci_set_power_state(dev, pci_choose_state(dev, state));
1528
1529 return 0;
1530 }
1531
1532 static int i810fb_resume(struct pci_dev *dev)
1533 {
1534 struct fb_info *info = pci_get_drvdata(dev);
1535 struct i810fb_par *par = (struct i810fb_par *) info->par;
1536
1537 if (par->cur_state == 0)
1538 return 0;
1539
1540 pci_restore_state(dev);
1541 pci_set_power_state(dev, PCI_D0);
1542 pci_enable_device(dev);
1543 agp_bind_memory(par->i810_gtt.i810_fb_memory,
1544 par->fb.offset);
1545 agp_bind_memory(par->i810_gtt.i810_cursor_memory,
1546 par->cursor_heap.offset);
1547
1548 info->fbops->fb_blank(VESA_NO_BLANKING, info);
1549
1550 par->cur_state = 0;
1551
1552 return 0;
1553 }
1554 /***********************************************************************
1555 * AGP resource allocation *
1556 ***********************************************************************/
1557
1558 static void __devinit i810_fix_pointers(struct i810fb_par *par)
1559 {
1560 par->fb.physical = par->aperture.physical+(par->fb.offset << 12);
1561 par->fb.virtual = par->aperture.virtual+(par->fb.offset << 12);
1562 par->iring.physical = par->aperture.physical +
1563 (par->iring.offset << 12);
1564 par->iring.virtual = par->aperture.virtual +
1565 (par->iring.offset << 12);
1566 par->cursor_heap.virtual = par->aperture.virtual+
1567 (par->cursor_heap.offset << 12);
1568 }
1569
1570 static void __devinit i810_fix_offsets(struct i810fb_par *par)
1571 {
1572 if (vram + 1 > par->aperture.size >> 20)
1573 vram = (par->aperture.size >> 20) - 1;
1574 if (v_offset_default > (par->aperture.size >> 20))
1575 v_offset_default = (par->aperture.size >> 20);
1576 if (vram + v_offset_default + 1 > par->aperture.size >> 20)
1577 v_offset_default = (par->aperture.size >> 20) - (vram + 1);
1578
1579 par->fb.size = vram << 20;
1580 par->fb.offset = v_offset_default << 20;
1581 par->fb.offset >>= 12;
1582
1583 par->iring.offset = par->fb.offset + (par->fb.size >> 12);
1584 par->iring.size = RINGBUFFER_SIZE;
1585
1586 par->cursor_heap.offset = par->iring.offset + (RINGBUFFER_SIZE >> 12);
1587 par->cursor_heap.size = 4096;
1588 }
1589
1590 static int __devinit i810_alloc_agp_mem(struct fb_info *info)
1591 {
1592 struct i810fb_par *par = (struct i810fb_par *) info->par;
1593 int size;
1594 struct agp_bridge_data *bridge;
1595
1596 i810_fix_offsets(par);
1597 size = par->fb.size + par->iring.size;
1598
1599 if (!(bridge = agp_backend_acquire(par->dev))) {
1600 printk("i810fb_alloc_fbmem: cannot acquire agpgart\n");
1601 return -ENODEV;
1602 }
1603 if (!(par->i810_gtt.i810_fb_memory =
1604 agp_allocate_memory(bridge, size >> 12, AGP_NORMAL_MEMORY))) {
1605 printk("i810fb_alloc_fbmem: can't allocate framebuffer "
1606 "memory\n");
1607 agp_backend_release(bridge);
1608 return -ENOMEM;
1609 }
1610 if (agp_bind_memory(par->i810_gtt.i810_fb_memory,
1611 par->fb.offset)) {
1612 printk("i810fb_alloc_fbmem: can't bind framebuffer memory\n");
1613 agp_backend_release(bridge);
1614 return -EBUSY;
1615 }
1616
1617 if (!(par->i810_gtt.i810_cursor_memory =
1618 agp_allocate_memory(bridge, par->cursor_heap.size >> 12,
1619 AGP_PHYSICAL_MEMORY))) {
1620 printk("i810fb_alloc_cursormem: can't allocate"
1621 "cursor memory\n");
1622 agp_backend_release(bridge);
1623 return -ENOMEM;
1624 }
1625 if (agp_bind_memory(par->i810_gtt.i810_cursor_memory,
1626 par->cursor_heap.offset)) {
1627 printk("i810fb_alloc_cursormem: cannot bind cursor memory\n");
1628 agp_backend_release(bridge);
1629 return -EBUSY;
1630 }
1631
1632 par->cursor_heap.physical = par->i810_gtt.i810_cursor_memory->physical;
1633
1634 i810_fix_pointers(par);
1635
1636 agp_backend_release(bridge);
1637
1638 return 0;
1639 }
1640
1641 /***************************************************************
1642 * Initialization *
1643 ***************************************************************/
1644
1645 /**
1646 * i810_init_monspecs
1647 * @info: pointer to device specific info structure
1648 *
1649 * DESCRIPTION:
1650 * Sets the the user monitor's horizontal and vertical
1651 * frequency limits
1652 */
1653 static void __devinit i810_init_monspecs(struct fb_info *info)
1654 {
1655 if (!hsync1)
1656 hsync1 = HFMIN;
1657 if (!hsync2)
1658 hsync2 = HFMAX;
1659 if (!info->monspecs.hfmax)
1660 info->monspecs.hfmax = hsync2;
1661 if (!info->monspecs.hfmin)
1662 info->monspecs.hfmin = hsync1;
1663 if (hsync2 < hsync1)
1664 info->monspecs.hfmin = hsync2;
1665
1666 if (!vsync1)
1667 vsync1 = VFMIN;
1668 if (!vsync2)
1669 vsync2 = VFMAX;
1670 if (IS_DVT && vsync1 < 60)
1671 vsync1 = 60;
1672 if (!info->monspecs.vfmax)
1673 info->monspecs.vfmax = vsync2;
1674 if (!info->monspecs.vfmin)
1675 info->monspecs.vfmin = vsync1;
1676 if (vsync2 < vsync1)
1677 info->monspecs.vfmin = vsync2;
1678 }
1679
1680 /**
1681 * i810_init_defaults - initializes default values to use
1682 * @par: pointer to i810fb_par structure
1683 * @info: pointer to current fb_info structure
1684 */
1685 static void __devinit i810_init_defaults(struct i810fb_par *par,
1686 struct fb_info *info)
1687 {
1688 if (voffset)
1689 v_offset_default = voffset;
1690 else if (par->aperture.size > 32 * 1024 * 1024)
1691 v_offset_default = 16;
1692 else
1693 v_offset_default = 8;
1694
1695 if (!vram)
1696 vram = 1;
1697
1698 if (accel)
1699 par->dev_flags |= HAS_ACCELERATION;
1700
1701 if (sync)
1702 par->dev_flags |= ALWAYS_SYNC;
1703
1704 if (bpp < 8)
1705 bpp = 8;
1706
1707 if (!vyres)
1708 vyres = (vram << 20)/(xres*bpp >> 3);
1709
1710 par->i810fb_ops = i810fb_ops;
1711 info->var.xres = xres;
1712 info->var.yres = yres;
1713 info->var.yres_virtual = vyres;
1714 info->var.bits_per_pixel = bpp;
1715
1716 if (dcolor)
1717 info->var.nonstd = 1;
1718
1719 if (par->dev_flags & HAS_ACCELERATION)
1720 info->var.accel_flags = 1;
1721
1722 i810_init_monspecs(info);
1723 }
1724
1725 /**
1726 * i810_init_device - initialize device
1727 * @par: pointer to i810fb_par structure
1728 */
1729 static void __devinit i810_init_device(struct i810fb_par *par)
1730 {
1731 u8 reg;
1732 u8 __iomem *mmio = par->mmio_start_virtual;
1733
1734 if (mtrr) set_mtrr(par);
1735
1736 i810_init_cursor(par);
1737
1738 /* mvo: enable external vga-connector (for laptops) */
1739 if (ext_vga) {
1740 i810_writel(HVSYNC, mmio, 0);
1741 i810_writel(PWR_CLKC, mmio, 3);
1742 }
1743
1744 pci_read_config_byte(par->dev, 0x50, &reg);
1745 reg &= FREQ_MASK;
1746 par->mem_freq = (reg) ? 133 : 100;
1747
1748 }
1749
1750 static int __devinit
1751 i810_allocate_pci_resource(struct i810fb_par *par,
1752 const struct pci_device_id *entry)
1753 {
1754 int err;
1755
1756 if ((err = pci_enable_device(par->dev))) {
1757 printk("i810fb_init: cannot enable device\n");
1758 return err;
1759 }
1760 par->res_flags |= PCI_DEVICE_ENABLED;
1761
1762 if (pci_resource_len(par->dev, 0) > 512 * 1024) {
1763 par->aperture.physical = pci_resource_start(par->dev, 0);
1764 par->aperture.size = pci_resource_len(par->dev, 0);
1765 par->mmio_start_phys = pci_resource_start(par->dev, 1);
1766 } else {
1767 par->aperture.physical = pci_resource_start(par->dev, 1);
1768 par->aperture.size = pci_resource_len(par->dev, 1);
1769 par->mmio_start_phys = pci_resource_start(par->dev, 0);
1770 }
1771 if (!par->aperture.size) {
1772 printk("i810fb_init: device is disabled\n");
1773 return -ENOMEM;
1774 }
1775
1776 if (!request_mem_region(par->aperture.physical,
1777 par->aperture.size,
1778 i810_pci_list[entry->driver_data])) {
1779 printk("i810fb_init: cannot request framebuffer region\n");
1780 return -ENODEV;
1781 }
1782 par->res_flags |= FRAMEBUFFER_REQ;
1783
1784 par->aperture.virtual = ioremap_nocache(par->aperture.physical,
1785 par->aperture.size);
1786 if (!par->aperture.virtual) {
1787 printk("i810fb_init: cannot remap framebuffer region\n");
1788 return -ENODEV;
1789 }
1790
1791 if (!request_mem_region(par->mmio_start_phys,
1792 MMIO_SIZE,
1793 i810_pci_list[entry->driver_data])) {
1794 printk("i810fb_init: cannot request mmio region\n");
1795 return -ENODEV;
1796 }
1797 par->res_flags |= MMIO_REQ;
1798
1799 par->mmio_start_virtual = ioremap_nocache(par->mmio_start_phys,
1800 MMIO_SIZE);
1801 if (!par->mmio_start_virtual) {
1802 printk("i810fb_init: cannot remap mmio region\n");
1803 return -ENODEV;
1804 }
1805
1806 return 0;
1807 }
1808
1809 #ifndef MODULE
1810 static int __init i810fb_setup(char *options)
1811 {
1812 char *this_opt, *suffix = NULL;
1813
1814 if (!options || !*options)
1815 return 0;
1816
1817 while ((this_opt = strsep(&options, ",")) != NULL) {
1818 if (!strncmp(this_opt, "mtrr", 4))
1819 mtrr = 1;
1820 else if (!strncmp(this_opt, "accel", 5))
1821 accel = 1;
1822 else if (!strncmp(this_opt, "ext_vga", 7))
1823 ext_vga = 1;
1824 else if (!strncmp(this_opt, "sync", 4))
1825 sync = 1;
1826 else if (!strncmp(this_opt, "vram:", 5))
1827 vram = (simple_strtoul(this_opt+5, NULL, 0));
1828 else if (!strncmp(this_opt, "voffset:", 8))
1829 voffset = (simple_strtoul(this_opt+8, NULL, 0));
1830 else if (!strncmp(this_opt, "xres:", 5))
1831 xres = simple_strtoul(this_opt+5, NULL, 0);
1832 else if (!strncmp(this_opt, "yres:", 5))
1833 yres = simple_strtoul(this_opt+5, NULL, 0);
1834 else if (!strncmp(this_opt, "vyres:", 6))
1835 vyres = simple_strtoul(this_opt+6, NULL, 0);
1836 else if (!strncmp(this_opt, "bpp:", 4))
1837 bpp = simple_strtoul(this_opt+4, NULL, 0);
1838 else if (!strncmp(this_opt, "hsync1:", 7)) {
1839 hsync1 = simple_strtoul(this_opt+7, &suffix, 0);
1840 if (strncmp(suffix, "H", 1))
1841 hsync1 *= 1000;
1842 } else if (!strncmp(this_opt, "hsync2:", 7)) {
1843 hsync2 = simple_strtoul(this_opt+7, &suffix, 0);
1844 if (strncmp(suffix, "H", 1))
1845 hsync2 *= 1000;
1846 } else if (!strncmp(this_opt, "vsync1:", 7))
1847 vsync1 = simple_strtoul(this_opt+7, NULL, 0);
1848 else if (!strncmp(this_opt, "vsync2:", 7))
1849 vsync2 = simple_strtoul(this_opt+7, NULL, 0);
1850 else if (!strncmp(this_opt, "dcolor", 6))
1851 dcolor = 1;
1852 }
1853 return 0;
1854 }
1855 #endif
1856
1857 static int __devinit i810fb_init_pci (struct pci_dev *dev,
1858 const struct pci_device_id *entry)
1859 {
1860 struct fb_info *info;
1861 struct i810fb_par *par = NULL;
1862 int i, err = -1, vfreq, hfreq, pixclock;
1863
1864 i = 0;
1865
1866 info = framebuffer_alloc(sizeof(struct i810fb_par), &dev->dev);
1867 if (!info)
1868 return -ENOMEM;
1869
1870 par = (struct i810fb_par *) info->par;
1871 par->dev = dev;
1872
1873 if (!(info->pixmap.addr = kmalloc(8*1024, GFP_KERNEL))) {
1874 i810fb_release_resource(info, par);
1875 return -ENOMEM;
1876 }
1877 memset(info->pixmap.addr, 0, 8*1024);
1878 info->pixmap.size = 8*1024;
1879 info->pixmap.buf_align = 8;
1880 info->pixmap.flags = FB_PIXMAP_SYSTEM;
1881
1882 if ((err = i810_allocate_pci_resource(par, entry))) {
1883 i810fb_release_resource(info, par);
1884 return err;
1885 }
1886
1887 i810_init_defaults(par, info);
1888
1889 if ((err = i810_alloc_agp_mem(info))) {
1890 i810fb_release_resource(info, par);
1891 return err;
1892 }
1893
1894 i810_init_device(par);
1895
1896 info->screen_base = par->fb.virtual;
1897 info->fbops = &par->i810fb_ops;
1898 info->pseudo_palette = par->pseudo_palette;
1899 fb_alloc_cmap(&info->cmap, 256, 0);
1900
1901 if ((err = info->fbops->fb_check_var(&info->var, info))) {
1902 i810fb_release_resource(info, par);
1903 return err;
1904 }
1905 encode_fix(&info->fix, info);
1906
1907 i810fb_init_ringbuffer(info);
1908 err = register_framebuffer(info);
1909 if (err < 0) {
1910 i810fb_release_resource(info, par);
1911 printk("i810fb_init: cannot register framebuffer device\n");
1912 return err;
1913 }
1914
1915 pci_set_drvdata(dev, info);
1916 pixclock = 1000000000/(info->var.pixclock);
1917 pixclock *= 1000;
1918 hfreq = pixclock/(info->var.xres + info->var.left_margin +
1919 info->var.hsync_len + info->var.right_margin);
1920 vfreq = hfreq/(info->var.yres + info->var.upper_margin +
1921 info->var.vsync_len + info->var.lower_margin);
1922
1923 printk("I810FB: fb%d : %s v%d.%d.%d%s\n"
1924 "I810FB: Video RAM : %dK\n"
1925 "I810FB: Monitor : H: %d-%d KHz V: %d-%d Hz\n"
1926 "I810FB: Mode : %dx%d-%dbpp@%dHz\n",
1927 info->node,
1928 i810_pci_list[entry->driver_data],
1929 VERSION_MAJOR, VERSION_MINOR, VERSION_TEENIE, BRANCH_VERSION,
1930 (int) par->fb.size>>10, info->monspecs.hfmin/1000,
1931 info->monspecs.hfmax/1000, info->monspecs.vfmin,
1932 info->monspecs.vfmax, info->var.xres,
1933 info->var.yres, info->var.bits_per_pixel, vfreq);
1934 return 0;
1935 }
1936
1937 /***************************************************************
1938 * De-initialization *
1939 ***************************************************************/
1940
1941 static void i810fb_release_resource(struct fb_info *info,
1942 struct i810fb_par *par)
1943 {
1944 struct gtt_data *gtt = &par->i810_gtt;
1945 unset_mtrr(par);
1946
1947 if (par->i810_gtt.i810_cursor_memory)
1948 agp_free_memory(gtt->i810_cursor_memory);
1949 if (par->i810_gtt.i810_fb_memory)
1950 agp_free_memory(gtt->i810_fb_memory);
1951
1952 if (par->mmio_start_virtual)
1953 iounmap(par->mmio_start_virtual);
1954 if (par->aperture.virtual)
1955 iounmap(par->aperture.virtual);
1956
1957 if (par->res_flags & FRAMEBUFFER_REQ)
1958 release_mem_region(par->aperture.physical,
1959 par->aperture.size);
1960 if (par->res_flags & MMIO_REQ)
1961 release_mem_region(par->mmio_start_phys, MMIO_SIZE);
1962
1963 if (par->res_flags & PCI_DEVICE_ENABLED)
1964 pci_disable_device(par->dev);
1965
1966 framebuffer_release(info);
1967
1968 }
1969
1970 static void __exit i810fb_remove_pci(struct pci_dev *dev)
1971 {
1972 struct fb_info *info = pci_get_drvdata(dev);
1973 struct i810fb_par *par = (struct i810fb_par *) info->par;
1974
1975 unregister_framebuffer(info);
1976 i810fb_release_resource(info, par);
1977 pci_set_drvdata(dev, NULL);
1978 printk("cleanup_module: unloaded i810 framebuffer device\n");
1979 }
1980
1981 #ifndef MODULE
1982 static int __init i810fb_init(void)
1983 {
1984 char *option = NULL;
1985
1986 if (fb_get_options("i810fb", &option))
1987 return -ENODEV;
1988 i810fb_setup(option);
1989
1990 return pci_register_driver(&i810fb_driver);
1991 }
1992 #endif
1993
1994 /*********************************************************************
1995 * Modularization *
1996 *********************************************************************/
1997
1998 #ifdef MODULE
1999
2000 static int __init i810fb_init(void)
2001 {
2002 hsync1 *= 1000;
2003 hsync2 *= 1000;
2004
2005 return pci_register_driver(&i810fb_driver);
2006 }
2007
2008 module_param(vram, int, 0);
2009 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB"
2010 " (default=4)");
2011 module_param(voffset, int, 0);
2012 MODULE_PARM_DESC(voffset, "at what offset to place start of framebuffer "
2013 "memory (0 to maximum aperture size), in MiB (default = 48)");
2014 module_param(bpp, int, 0);
2015 MODULE_PARM_DESC(bpp, "Color depth for display in bits per pixel"
2016 " (default = 8)");
2017 module_param(xres, int, 0);
2018 MODULE_PARM_DESC(xres, "Horizontal resolution in pixels (default = 640)");
2019 module_param(yres, int, 0);
2020 MODULE_PARM_DESC(yres, "Vertical resolution in scanlines (default = 480)");
2021 module_param(vyres,int, 0);
2022 MODULE_PARM_DESC(vyres, "Virtual vertical resolution in scanlines"
2023 " (default = 480)");
2024 module_param(hsync1, int, 0);
2025 MODULE_PARM_DESC(hsync1, "Minimum horizontal frequency of monitor in KHz"
2026 " (default = 31)");
2027 module_param(hsync2, int, 0);
2028 MODULE_PARM_DESC(hsync2, "Maximum horizontal frequency of monitor in KHz"
2029 " (default = 31)");
2030 module_param(vsync1, int, 0);
2031 MODULE_PARM_DESC(vsync1, "Minimum vertical frequency of monitor in Hz"
2032 " (default = 50)");
2033 module_param(vsync2, int, 0);
2034 MODULE_PARM_DESC(vsync2, "Maximum vertical frequency of monitor in Hz"
2035 " (default = 60)");
2036 module_param(accel, bool, 0);
2037 MODULE_PARM_DESC(accel, "Use Acceleration (BLIT) engine (default = 0)");
2038 module_param(mtrr, bool, 0);
2039 MODULE_PARM_DESC(mtrr, "Use MTRR (default = 0)");
2040 module_param(ext_vga, bool, 0);
2041 MODULE_PARM_DESC(ext_vga, "Enable external VGA connector (default = 0)");
2042 module_param(sync, bool, 0);
2043 MODULE_PARM_DESC(sync, "wait for accel engine to finish drawing"
2044 " (default = 0)");
2045 module_param(dcolor, bool, 0);
2046 MODULE_PARM_DESC(dcolor, "use DirectColor visuals"
2047 " (default = 0 = TrueColor)");
2048
2049 MODULE_AUTHOR("Tony A. Daplas");
2050 MODULE_DESCRIPTION("Framebuffer device for the Intel 810/815 and"
2051 " compatible cards");
2052 MODULE_LICENSE("GPL");
2053
2054 static void __exit i810fb_exit(void)
2055 {
2056 pci_unregister_driver(&i810fb_driver);
2057 }
2058 module_exit(i810fb_exit);
2059
2060 #endif /* MODULE */
2061
2062 module_init(i810fb_init);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree