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[PATCH] powermac: More powermac backlight fixes
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / video / aty / atyfb_base.c
blob053ff63365b76662ba092608cb3a145af6b2c42c
1 /*
2 * ATI Frame Buffer Device Driver Core
3 *
4 * Copyright (C) 2004 Alex Kern <alex.kern@gmx.de>
5 * Copyright (C) 1997-2001 Geert Uytterhoeven
6 * Copyright (C) 1998 Bernd Harries
7 * Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be)
8 *
9 * This driver supports the following ATI graphics chips:
10 * - ATI Mach64
11 *
12 * To do: add support for
13 * - ATI Rage128 (from aty128fb.c)
14 * - ATI Radeon (from radeonfb.c)
15 *
16 * This driver is partly based on the PowerMac console driver:
17 *
18 * Copyright (C) 1996 Paul Mackerras
19 *
20 * and on the PowerMac ATI/mach64 display driver:
21 *
22 * Copyright (C) 1997 Michael AK Tesch
23 *
24 * with work by Jon Howell
25 * Harry AC Eaton
26 * Anthony Tong <atong@uiuc.edu>
27 *
28 * Generic LCD support written by Daniel Mantione, ported from 2.4.20 by Alex Kern
29 * Many Thanks to Ville Syrjälä for patches and fixing nasting 16 bit color bug.
30 *
31 * This file is subject to the terms and conditions of the GNU General Public
32 * License. See the file COPYING in the main directory of this archive for
33 * more details.
34 *
35 * Many thanks to Nitya from ATI devrel for support and patience !
36 */
37
38 /******************************************************************************
39
40 TODO:
41
42 - cursor support on all cards and all ramdacs.
43 - cursor parameters controlable via ioctl()s.
44 - guess PLL and MCLK based on the original PLL register values initialized
45 by Open Firmware (if they are initialized). BIOS is done
46
47 (Anyone with Mac to help with this?)
48
49 ******************************************************************************/
50
51
52 #include <linux/module.h>
53 #include <linux/moduleparam.h>
54 #include <linux/kernel.h>
55 #include <linux/errno.h>
56 #include <linux/string.h>
57 #include <linux/mm.h>
58 #include <linux/slab.h>
59 #include <linux/vmalloc.h>
60 #include <linux/delay.h>
61 #include <linux/console.h>
62 #include <linux/fb.h>
63 #include <linux/init.h>
64 #include <linux/pci.h>
65 #include <linux/interrupt.h>
66 #include <linux/spinlock.h>
67 #include <linux/wait.h>
68 #include <linux/backlight.h>
69
70 #include <asm/io.h>
71 #include <asm/uaccess.h>
72
73 #include <video/mach64.h>
74 #include "atyfb.h"
75 #include "ati_ids.h"
76
77 #ifdef __powerpc__
78 #include <asm/machdep.h>
79 #include <asm/prom.h>
80 #include "../macmodes.h"
81 #endif
82 #ifdef __sparc__
83 #include <asm/pbm.h>
84 #include <asm/fbio.h>
85 #endif
86
87 #ifdef CONFIG_ADB_PMU
88 #include <linux/adb.h>
89 #include <linux/pmu.h>
90 #endif
91 #ifdef CONFIG_BOOTX_TEXT
92 #include <asm/btext.h>
93 #endif
94 #ifdef CONFIG_PMAC_BACKLIGHT
95 #include <asm/backlight.h>
96 #endif
97 #ifdef CONFIG_MTRR
98 #include <asm/mtrr.h>
99 #endif
100
101 /*
102 * Debug flags.
103 */
104 #undef DEBUG
105 /*#define DEBUG*/
106
107 /* Make sure n * PAGE_SIZE is protected at end of Aperture for GUI-regs */
108 /* - must be large enough to catch all GUI-Regs */
109 /* - must be aligned to a PAGE boundary */
110 #define GUI_RESERVE (1 * PAGE_SIZE)
111
112 /* FIXME: remove the FAIL definition */
113 #define FAIL(msg) do { \
114 if (!(var->activate & FB_ACTIVATE_TEST)) \
115 printk(KERN_CRIT "atyfb: " msg "\n"); \
116 return -EINVAL; \
117 } while (0)
118 #define FAIL_MAX(msg, x, _max_) do { \
119 if (x > _max_) { \
120 if (!(var->activate & FB_ACTIVATE_TEST)) \
121 printk(KERN_CRIT "atyfb: " msg " %x(%x)\n", x, _max_); \
122 return -EINVAL; \
123 } \
124 } while (0)
125 #ifdef DEBUG
126 #define DPRINTK(fmt, args...) printk(KERN_DEBUG "atyfb: " fmt, ## args)
127 #else
128 #define DPRINTK(fmt, args...)
129 #endif
130
131 #define PRINTKI(fmt, args...) printk(KERN_INFO "atyfb: " fmt, ## args)
132 #define PRINTKE(fmt, args...) printk(KERN_ERR "atyfb: " fmt, ## args)
133
134 #if defined(CONFIG_PM) || defined(CONFIG_PMAC_BACKLIGHT) || defined (CONFIG_FB_ATY_GENERIC_LCD)
135 static const u32 lt_lcd_regs[] = {
136 CONFIG_PANEL_LG,
137 LCD_GEN_CNTL_LG,
138 DSTN_CONTROL_LG,
139 HFB_PITCH_ADDR_LG,
140 HORZ_STRETCHING_LG,
141 VERT_STRETCHING_LG,
142 0, /* EXT_VERT_STRETCH */
143 LT_GIO_LG,
144 POWER_MANAGEMENT_LG
145 };
146
147 void aty_st_lcd(int index, u32 val, const struct atyfb_par *par)
148 {
149 if (M64_HAS(LT_LCD_REGS)) {
150 aty_st_le32(lt_lcd_regs[index], val, par);
151 } else {
152 unsigned long temp;
153
154 /* write addr byte */
155 temp = aty_ld_le32(LCD_INDEX, par);
156 aty_st_le32(LCD_INDEX, (temp & ~LCD_INDEX_MASK) | index, par);
157 /* write the register value */
158 aty_st_le32(LCD_DATA, val, par);
159 }
160 }
161
162 u32 aty_ld_lcd(int index, const struct atyfb_par *par)
163 {
164 if (M64_HAS(LT_LCD_REGS)) {
165 return aty_ld_le32(lt_lcd_regs[index], par);
166 } else {
167 unsigned long temp;
168
169 /* write addr byte */
170 temp = aty_ld_le32(LCD_INDEX, par);
171 aty_st_le32(LCD_INDEX, (temp & ~LCD_INDEX_MASK) | index, par);
172 /* read the register value */
173 return aty_ld_le32(LCD_DATA, par);
174 }
175 }
176 #endif /* defined(CONFIG_PM) || defined(CONFIG_PMAC_BACKLIGHT) || defined (CONFIG_FB_ATY_GENERIC_LCD) */
177
178 #ifdef CONFIG_FB_ATY_GENERIC_LCD
179 /*
180 * ATIReduceRatio --
181 *
182 * Reduce a fraction by factoring out the largest common divider of the
183 * fraction's numerator and denominator.
184 */
185 static void ATIReduceRatio(int *Numerator, int *Denominator)
186 {
187 int Multiplier, Divider, Remainder;
188
189 Multiplier = *Numerator;
190 Divider = *Denominator;
191
192 while ((Remainder = Multiplier % Divider))
193 {
194 Multiplier = Divider;
195 Divider = Remainder;
196 }
197
198 *Numerator /= Divider;
199 *Denominator /= Divider;
200 }
201 #endif
202 /*
203 * The Hardware parameters for each card
204 */
205
206 struct aty_cmap_regs {
207 u8 windex;
208 u8 lut;
209 u8 mask;
210 u8 rindex;
211 u8 cntl;
212 };
213
214 struct pci_mmap_map {
215 unsigned long voff;
216 unsigned long poff;
217 unsigned long size;
218 unsigned long prot_flag;
219 unsigned long prot_mask;
220 };
221
222 static struct fb_fix_screeninfo atyfb_fix __devinitdata = {
223 .id = "ATY Mach64",
224 .type = FB_TYPE_PACKED_PIXELS,
225 .visual = FB_VISUAL_PSEUDOCOLOR,
226 .xpanstep = 8,
227 .ypanstep = 1,
228 };
229
230 /*
231 * Frame buffer device API
232 */
233
234 static int atyfb_open(struct fb_info *info, int user);
235 static int atyfb_release(struct fb_info *info, int user);
236 static int atyfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info);
237 static int atyfb_set_par(struct fb_info *info);
238 static int atyfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
239 u_int transp, struct fb_info *info);
240 static int atyfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info);
241 static int atyfb_blank(int blank, struct fb_info *info);
242 static int atyfb_ioctl(struct fb_info *info, u_int cmd, u_long arg);
243 extern void atyfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
244 extern void atyfb_copyarea(struct fb_info *info, const struct fb_copyarea *area);
245 extern void atyfb_imageblit(struct fb_info *info, const struct fb_image *image);
246 #ifdef __sparc__
247 static int atyfb_mmap(struct fb_info *info, struct vm_area_struct *vma);
248 #endif
249 static int atyfb_sync(struct fb_info *info);
250
251 /*
252 * Internal routines
253 */
254
255 static int aty_init(struct fb_info *info, const char *name);
256 #ifdef CONFIG_ATARI
257 static int store_video_par(char *videopar, unsigned char m64_num);
258 #endif
259
260 static struct crtc saved_crtc;
261 static union aty_pll saved_pll;
262 static void aty_get_crtc(const struct atyfb_par *par, struct crtc *crtc);
263
264 static void aty_set_crtc(const struct atyfb_par *par, const struct crtc *crtc);
265 static int aty_var_to_crtc(const struct fb_info *info, const struct fb_var_screeninfo *var, struct crtc *crtc);
266 static int aty_crtc_to_var(const struct crtc *crtc, struct fb_var_screeninfo *var);
267 static void set_off_pitch(struct atyfb_par *par, const struct fb_info *info);
268 #ifdef CONFIG_PPC
269 static int read_aty_sense(const struct atyfb_par *par);
270 #endif
271
272
273 /*
274 * Interface used by the world
275 */
276
277 static struct fb_var_screeninfo default_var = {
278 /* 640x480, 60 Hz, Non-Interlaced (25.175 MHz dotclock) */
279 640, 480, 640, 480, 0, 0, 8, 0,
280 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
281 0, 0, -1, -1, 0, 39722, 48, 16, 33, 10, 96, 2,
282 0, FB_VMODE_NONINTERLACED
283 };
284
285 static struct fb_videomode defmode = {
286 /* 640x480 @ 60 Hz, 31.5 kHz hsync */
287 NULL, 60, 640, 480, 39721, 40, 24, 32, 11, 96, 2,
288 0, FB_VMODE_NONINTERLACED
289 };
290
291 static struct fb_ops atyfb_ops = {
292 .owner = THIS_MODULE,
293 .fb_open = atyfb_open,
294 .fb_release = atyfb_release,
295 .fb_check_var = atyfb_check_var,
296 .fb_set_par = atyfb_set_par,
297 .fb_setcolreg = atyfb_setcolreg,
298 .fb_pan_display = atyfb_pan_display,
299 .fb_blank = atyfb_blank,
300 .fb_ioctl = atyfb_ioctl,
301 .fb_fillrect = atyfb_fillrect,
302 .fb_copyarea = atyfb_copyarea,
303 .fb_imageblit = atyfb_imageblit,
304 #ifdef __sparc__
305 .fb_mmap = atyfb_mmap,
306 #endif
307 .fb_sync = atyfb_sync,
308 };
309
310 static int noaccel;
311 #ifdef CONFIG_MTRR
312 static int nomtrr;
313 #endif
314 static int vram;
315 static int pll;
316 static int mclk;
317 static int xclk;
318 static int comp_sync __devinitdata = -1;
319 static char *mode;
320
321 #ifdef CONFIG_PPC
322 static int default_vmode __devinitdata = VMODE_CHOOSE;
323 static int default_cmode __devinitdata = CMODE_CHOOSE;
324
325 module_param_named(vmode, default_vmode, int, 0);
326 MODULE_PARM_DESC(vmode, "int: video mode for mac");
327 module_param_named(cmode, default_cmode, int, 0);
328 MODULE_PARM_DESC(cmode, "int: color mode for mac");
329 #endif
330
331 #ifdef CONFIG_ATARI
332 static unsigned int mach64_count __devinitdata = 0;
333 static unsigned long phys_vmembase[FB_MAX] __devinitdata = { 0, };
334 static unsigned long phys_size[FB_MAX] __devinitdata = { 0, };
335 static unsigned long phys_guiregbase[FB_MAX] __devinitdata = { 0, };
336 #endif
337
338 /* top -> down is an evolution of mach64 chipset, any corrections? */
339 #define ATI_CHIP_88800GX (M64F_GX)
340 #define ATI_CHIP_88800CX (M64F_GX)
341
342 #define ATI_CHIP_264CT (M64F_CT | M64F_INTEGRATED | M64F_CT_BUS | M64F_MAGIC_FIFO)
343 #define ATI_CHIP_264ET (M64F_CT | M64F_INTEGRATED | M64F_CT_BUS | M64F_MAGIC_FIFO)
344
345 #define ATI_CHIP_264VT (M64F_VT | M64F_INTEGRATED | M64F_VT_BUS | M64F_MAGIC_FIFO)
346 #define ATI_CHIP_264GT (M64F_GT | M64F_INTEGRATED | M64F_MAGIC_FIFO | M64F_EXTRA_BRIGHT)
347
348 #define ATI_CHIP_264VTB (M64F_VT | M64F_INTEGRATED | M64F_VT_BUS | M64F_GTB_DSP)
349 #define ATI_CHIP_264VT3 (M64F_VT | M64F_INTEGRATED | M64F_VT_BUS | M64F_GTB_DSP | M64F_SDRAM_MAGIC_PLL)
350 #define ATI_CHIP_264VT4 (M64F_VT | M64F_INTEGRATED | M64F_GTB_DSP)
351
352 /* FIXME what is this chip? */
353 #define ATI_CHIP_264LT (M64F_GT | M64F_INTEGRATED | M64F_GTB_DSP)
354
355 /* make sets shorter */
356 #define ATI_MODERN_SET (M64F_GT | M64F_INTEGRATED | M64F_GTB_DSP | M64F_EXTRA_BRIGHT)
357
358 #define ATI_CHIP_264GTB (ATI_MODERN_SET | M64F_SDRAM_MAGIC_PLL)
359 /*#define ATI_CHIP_264GTDVD ?*/
360 #define ATI_CHIP_264LTG (ATI_MODERN_SET | M64F_SDRAM_MAGIC_PLL)
361
362 #define ATI_CHIP_264GT2C (ATI_MODERN_SET | M64F_SDRAM_MAGIC_PLL | M64F_HW_TRIPLE)
363 #define ATI_CHIP_264GTPRO (ATI_MODERN_SET | M64F_SDRAM_MAGIC_PLL | M64F_HW_TRIPLE | M64F_FIFO_32 | M64F_RESET_3D)
364 #define ATI_CHIP_264LTPRO (ATI_MODERN_SET | M64F_HW_TRIPLE | M64F_FIFO_32 | M64F_RESET_3D)
365
366 #define ATI_CHIP_264XL (ATI_MODERN_SET | M64F_HW_TRIPLE | M64F_FIFO_32 | M64F_RESET_3D | M64F_XL_DLL | M64F_MFB_FORCE_4)
367 #define ATI_CHIP_MOBILITY (ATI_MODERN_SET | M64F_HW_TRIPLE | M64F_FIFO_32 | M64F_RESET_3D | M64F_XL_DLL | M64F_MFB_FORCE_4 | M64F_MOBIL_BUS)
368
369 static struct {
370 u16 pci_id;
371 const char *name;
372 int pll, mclk, xclk, ecp_max;
373 u32 features;
374 } aty_chips[] __devinitdata = {
375 #ifdef CONFIG_FB_ATY_GX
376 /* Mach64 GX */
377 { PCI_CHIP_MACH64GX, "ATI888GX00 (Mach64 GX)", 135, 50, 50, 0, ATI_CHIP_88800GX },
378 { PCI_CHIP_MACH64CX, "ATI888CX00 (Mach64 CX)", 135, 50, 50, 0, ATI_CHIP_88800CX },
379 #endif /* CONFIG_FB_ATY_GX */
380
381 #ifdef CONFIG_FB_ATY_CT
382 { PCI_CHIP_MACH64CT, "ATI264CT (Mach64 CT)", 135, 60, 60, 0, ATI_CHIP_264CT },
383 { PCI_CHIP_MACH64ET, "ATI264ET (Mach64 ET)", 135, 60, 60, 0, ATI_CHIP_264ET },
384
385 /* FIXME what is this chip? */
386 { PCI_CHIP_MACH64LT, "ATI264LT (Mach64 LT)", 135, 63, 63, 0, ATI_CHIP_264LT },
387
388 { PCI_CHIP_MACH64VT, "ATI264VT (Mach64 VT)", 170, 67, 67, 80, ATI_CHIP_264VT },
389 { PCI_CHIP_MACH64GT, "3D RAGE (Mach64 GT)", 135, 63, 63, 80, ATI_CHIP_264GT },
390
391 { PCI_CHIP_MACH64VU, "ATI264VT3 (Mach64 VU)", 200, 67, 67, 80, ATI_CHIP_264VT3 },
392 { PCI_CHIP_MACH64GU, "3D RAGE II+ (Mach64 GU)", 200, 67, 67, 100, ATI_CHIP_264GTB },
393
394 { PCI_CHIP_MACH64LG, "3D RAGE LT (Mach64 LG)", 230, 63, 63, 100, ATI_CHIP_264LTG | M64F_LT_LCD_REGS | M64F_G3_PB_1024x768 },
395
396 { PCI_CHIP_MACH64VV, "ATI264VT4 (Mach64 VV)", 230, 83, 83, 100, ATI_CHIP_264VT4 },
397
398 { PCI_CHIP_MACH64GV, "3D RAGE IIC (Mach64 GV, PCI)", 230, 83, 83, 100, ATI_CHIP_264GT2C },
399 { PCI_CHIP_MACH64GW, "3D RAGE IIC (Mach64 GW, AGP)", 230, 83, 83, 100, ATI_CHIP_264GT2C },
400 { PCI_CHIP_MACH64GY, "3D RAGE IIC (Mach64 GY, PCI)", 230, 83, 83, 100, ATI_CHIP_264GT2C },
401 { PCI_CHIP_MACH64GZ, "3D RAGE IIC (Mach64 GZ, AGP)", 230, 83, 83, 100, ATI_CHIP_264GT2C },
402
403 { PCI_CHIP_MACH64GB, "3D RAGE PRO (Mach64 GB, BGA, AGP)", 230, 100, 100, 125, ATI_CHIP_264GTPRO },
404 { PCI_CHIP_MACH64GD, "3D RAGE PRO (Mach64 GD, BGA, AGP 1x)", 230, 100, 100, 125, ATI_CHIP_264GTPRO },
405 { PCI_CHIP_MACH64GI, "3D RAGE PRO (Mach64 GI, BGA, PCI)", 230, 100, 100, 125, ATI_CHIP_264GTPRO | M64F_MAGIC_VRAM_SIZE },
406 { PCI_CHIP_MACH64GP, "3D RAGE PRO (Mach64 GP, PQFP, PCI)", 230, 100, 100, 125, ATI_CHIP_264GTPRO },
407 { PCI_CHIP_MACH64GQ, "3D RAGE PRO (Mach64 GQ, PQFP, PCI, limited 3D)", 230, 100, 100, 125, ATI_CHIP_264GTPRO },
408
409 { PCI_CHIP_MACH64LB, "3D RAGE LT PRO (Mach64 LB, AGP)", 236, 75, 100, 135, ATI_CHIP_264LTPRO },
410 { PCI_CHIP_MACH64LD, "3D RAGE LT PRO (Mach64 LD, AGP)", 230, 100, 100, 135, ATI_CHIP_264LTPRO },
411 { PCI_CHIP_MACH64LI, "3D RAGE LT PRO (Mach64 LI, PCI)", 230, 100, 100, 135, ATI_CHIP_264LTPRO | M64F_G3_PB_1_1 | M64F_G3_PB_1024x768 },
412 { PCI_CHIP_MACH64LP, "3D RAGE LT PRO (Mach64 LP, PCI)", 230, 100, 100, 135, ATI_CHIP_264LTPRO },
413 { PCI_CHIP_MACH64LQ, "3D RAGE LT PRO (Mach64 LQ, PCI)", 230, 100, 100, 135, ATI_CHIP_264LTPRO },
414
415 { PCI_CHIP_MACH64GM, "3D RAGE XL (Mach64 GM, AGP 2x)", 230, 83, 63, 135, ATI_CHIP_264XL },
416 { PCI_CHIP_MACH64GN, "3D RAGE XC (Mach64 GN, AGP 2x)", 230, 83, 63, 135, ATI_CHIP_264XL },
417 { PCI_CHIP_MACH64GO, "3D RAGE XL (Mach64 GO, PCI-66)", 230, 83, 63, 135, ATI_CHIP_264XL },
418 { PCI_CHIP_MACH64GL, "3D RAGE XC (Mach64 GL, PCI-66)", 230, 83, 63, 135, ATI_CHIP_264XL },
419 { PCI_CHIP_MACH64GR, "3D RAGE XL (Mach64 GR, PCI-33)", 230, 83, 63, 135, ATI_CHIP_264XL | M64F_SDRAM_MAGIC_PLL },
420 { PCI_CHIP_MACH64GS, "3D RAGE XC (Mach64 GS, PCI-33)", 230, 83, 63, 135, ATI_CHIP_264XL },
421
422 { PCI_CHIP_MACH64LM, "3D RAGE Mobility P/M (Mach64 LM, AGP 2x)", 230, 83, 125, 135, ATI_CHIP_MOBILITY },
423 { PCI_CHIP_MACH64LN, "3D RAGE Mobility L (Mach64 LN, AGP 2x)", 230, 83, 125, 135, ATI_CHIP_MOBILITY },
424 { PCI_CHIP_MACH64LR, "3D RAGE Mobility P/M (Mach64 LR, PCI)", 230, 83, 125, 135, ATI_CHIP_MOBILITY },
425 { PCI_CHIP_MACH64LS, "3D RAGE Mobility L (Mach64 LS, PCI)", 230, 83, 125, 135, ATI_CHIP_MOBILITY },
426 #endif /* CONFIG_FB_ATY_CT */
427 };
428
429 /* can not fail */
430 static int __devinit correct_chipset(struct atyfb_par *par)
431 {
432 u8 rev;
433 u16 type;
434 u32 chip_id;
435 const char *name;
436 int i;
437
438 for (i = ARRAY_SIZE(aty_chips) - 1; i >= 0; i--)
439 if (par->pci_id == aty_chips[i].pci_id)
440 break;
441
442 name = aty_chips[i].name;
443 par->pll_limits.pll_max = aty_chips[i].pll;
444 par->pll_limits.mclk = aty_chips[i].mclk;
445 par->pll_limits.xclk = aty_chips[i].xclk;
446 par->pll_limits.ecp_max = aty_chips[i].ecp_max;
447 par->features = aty_chips[i].features;
448
449 chip_id = aty_ld_le32(CONFIG_CHIP_ID, par);
450 type = chip_id & CFG_CHIP_TYPE;
451 rev = (chip_id & CFG_CHIP_REV) >> 24;
452
453 switch(par->pci_id) {
454 #ifdef CONFIG_FB_ATY_GX
455 case PCI_CHIP_MACH64GX:
456 if(type != 0x00d7)
457 return -ENODEV;
458 break;
459 case PCI_CHIP_MACH64CX:
460 if(type != 0x0057)
461 return -ENODEV;
462 break;
463 #endif
464 #ifdef CONFIG_FB_ATY_CT
465 case PCI_CHIP_MACH64VT:
466 switch (rev & 0x07) {
467 case 0x00:
468 switch (rev & 0xc0) {
469 case 0x00:
470 name = "ATI264VT (A3) (Mach64 VT)";
471 par->pll_limits.pll_max = 170;
472 par->pll_limits.mclk = 67;
473 par->pll_limits.xclk = 67;
474 par->pll_limits.ecp_max = 80;
475 par->features = ATI_CHIP_264VT;
476 break;
477 case 0x40:
478 name = "ATI264VT2 (A4) (Mach64 VT)";
479 par->pll_limits.pll_max = 200;
480 par->pll_limits.mclk = 67;
481 par->pll_limits.xclk = 67;
482 par->pll_limits.ecp_max = 80;
483 par->features = ATI_CHIP_264VT | M64F_MAGIC_POSTDIV;
484 break;
485 }
486 break;
487 case 0x01:
488 name = "ATI264VT3 (B1) (Mach64 VT)";
489 par->pll_limits.pll_max = 200;
490 par->pll_limits.mclk = 67;
491 par->pll_limits.xclk = 67;
492 par->pll_limits.ecp_max = 80;
493 par->features = ATI_CHIP_264VTB;
494 break;
495 case 0x02:
496 name = "ATI264VT3 (B2) (Mach64 VT)";
497 par->pll_limits.pll_max = 200;
498 par->pll_limits.mclk = 67;
499 par->pll_limits.xclk = 67;
500 par->pll_limits.ecp_max = 80;
501 par->features = ATI_CHIP_264VT3;
502 break;
503 }
504 break;
505 case PCI_CHIP_MACH64GT:
506 switch (rev & 0x07) {
507 case 0x01:
508 name = "3D RAGE II (Mach64 GT)";
509 par->pll_limits.pll_max = 170;
510 par->pll_limits.mclk = 67;
511 par->pll_limits.xclk = 67;
512 par->pll_limits.ecp_max = 80;
513 par->features = ATI_CHIP_264GTB;
514 break;
515 case 0x02:
516 name = "3D RAGE II+ (Mach64 GT)";
517 par->pll_limits.pll_max = 200;
518 par->pll_limits.mclk = 67;
519 par->pll_limits.xclk = 67;
520 par->pll_limits.ecp_max = 100;
521 par->features = ATI_CHIP_264GTB;
522 break;
523 }
524 break;
525 #endif
526 }
527
528 PRINTKI("%s [0x%04x rev 0x%02x]\n", name, type, rev);
529 return 0;
530 }
531
532 static char ram_dram[] __devinitdata = "DRAM";
533 static char ram_resv[] __devinitdata = "RESV";
534 #ifdef CONFIG_FB_ATY_GX
535 static char ram_vram[] __devinitdata = "VRAM";
536 #endif /* CONFIG_FB_ATY_GX */
537 #ifdef CONFIG_FB_ATY_CT
538 static char ram_edo[] __devinitdata = "EDO";
539 static char ram_sdram[] __devinitdata = "SDRAM (1:1)";
540 static char ram_sgram[] __devinitdata = "SGRAM (1:1)";
541 static char ram_sdram32[] __devinitdata = "SDRAM (2:1) (32-bit)";
542 static char ram_off[] __devinitdata = "OFF";
543 #endif /* CONFIG_FB_ATY_CT */
544
545
546 static u32 pseudo_palette[17];
547
548 #ifdef CONFIG_FB_ATY_GX
549 static char *aty_gx_ram[8] __devinitdata = {
550 ram_dram, ram_vram, ram_vram, ram_dram,
551 ram_dram, ram_vram, ram_vram, ram_resv
552 };
553 #endif /* CONFIG_FB_ATY_GX */
554
555 #ifdef CONFIG_FB_ATY_CT
556 static char *aty_ct_ram[8] __devinitdata = {
557 ram_off, ram_dram, ram_edo, ram_edo,
558 ram_sdram, ram_sgram, ram_sdram32, ram_resv
559 };
560 #endif /* CONFIG_FB_ATY_CT */
561
562 static u32 atyfb_get_pixclock(struct fb_var_screeninfo *var, struct atyfb_par *par)
563 {
564 u32 pixclock = var->pixclock;
565 #ifdef CONFIG_FB_ATY_GENERIC_LCD
566 u32 lcd_on_off;
567 par->pll.ct.xres = 0;
568 if (par->lcd_table != 0) {
569 lcd_on_off = aty_ld_lcd(LCD_GEN_CNTL, par);
570 if(lcd_on_off & LCD_ON) {
571 par->pll.ct.xres = var->xres;
572 pixclock = par->lcd_pixclock;
573 }
574 }
575 #endif
576 return pixclock;
577 }
578
579 #if defined(CONFIG_PPC)
580
581 /*
582 * Apple monitor sense
583 */
584
585 static int __devinit read_aty_sense(const struct atyfb_par *par)
586 {
587 int sense, i;
588
589 aty_st_le32(GP_IO, 0x31003100, par); /* drive outputs high */
590 __delay(200);
591 aty_st_le32(GP_IO, 0, par); /* turn off outputs */
592 __delay(2000);
593 i = aty_ld_le32(GP_IO, par); /* get primary sense value */
594 sense = ((i & 0x3000) >> 3) | (i & 0x100);
595
596 /* drive each sense line low in turn and collect the other 2 */
597 aty_st_le32(GP_IO, 0x20000000, par); /* drive A low */
598 __delay(2000);
599 i = aty_ld_le32(GP_IO, par);
600 sense |= ((i & 0x1000) >> 7) | ((i & 0x100) >> 4);
601 aty_st_le32(GP_IO, 0x20002000, par); /* drive A high again */
602 __delay(200);
603
604 aty_st_le32(GP_IO, 0x10000000, par); /* drive B low */
605 __delay(2000);
606 i = aty_ld_le32(GP_IO, par);
607 sense |= ((i & 0x2000) >> 10) | ((i & 0x100) >> 6);
608 aty_st_le32(GP_IO, 0x10001000, par); /* drive B high again */
609 __delay(200);
610
611 aty_st_le32(GP_IO, 0x01000000, par); /* drive C low */
612 __delay(2000);
613 sense |= (aty_ld_le32(GP_IO, par) & 0x3000) >> 12;
614 aty_st_le32(GP_IO, 0, par); /* turn off outputs */
615 return sense;
616 }
617
618 #endif /* defined(CONFIG_PPC) */
619
620 /* ------------------------------------------------------------------------- */
621
622 /*
623 * CRTC programming
624 */
625
626 static void aty_get_crtc(const struct atyfb_par *par, struct crtc *crtc)
627 {
628 #ifdef CONFIG_FB_ATY_GENERIC_LCD
629 if (par->lcd_table != 0) {
630 if(!M64_HAS(LT_LCD_REGS)) {
631 crtc->lcd_index = aty_ld_le32(LCD_INDEX, par);
632 aty_st_le32(LCD_INDEX, crtc->lcd_index, par);
633 }
634 crtc->lcd_config_panel = aty_ld_lcd(CONFIG_PANEL, par);
635 crtc->lcd_gen_cntl = aty_ld_lcd(LCD_GEN_CNTL, par);
636
637
638 /* switch to non shadow registers */
639 aty_st_lcd(LCD_GEN_CNTL, crtc->lcd_gen_cntl &
640 ~(CRTC_RW_SELECT | SHADOW_EN | SHADOW_RW_EN), par);
641
642 /* save stretching */
643 crtc->horz_stretching = aty_ld_lcd(HORZ_STRETCHING, par);
644 crtc->vert_stretching = aty_ld_lcd(VERT_STRETCHING, par);
645 if (!M64_HAS(LT_LCD_REGS))
646 crtc->ext_vert_stretch = aty_ld_lcd(EXT_VERT_STRETCH, par);
647 }
648 #endif
649 crtc->h_tot_disp = aty_ld_le32(CRTC_H_TOTAL_DISP, par);
650 crtc->h_sync_strt_wid = aty_ld_le32(CRTC_H_SYNC_STRT_WID, par);
651 crtc->v_tot_disp = aty_ld_le32(CRTC_V_TOTAL_DISP, par);
652 crtc->v_sync_strt_wid = aty_ld_le32(CRTC_V_SYNC_STRT_WID, par);
653 crtc->vline_crnt_vline = aty_ld_le32(CRTC_VLINE_CRNT_VLINE, par);
654 crtc->off_pitch = aty_ld_le32(CRTC_OFF_PITCH, par);
655 crtc->gen_cntl = aty_ld_le32(CRTC_GEN_CNTL, par);
656
657 #ifdef CONFIG_FB_ATY_GENERIC_LCD
658 if (par->lcd_table != 0) {
659 /* switch to shadow registers */
660 aty_st_lcd(LCD_GEN_CNTL, (crtc->lcd_gen_cntl & ~CRTC_RW_SELECT) |
661 SHADOW_EN | SHADOW_RW_EN, par);
662
663 crtc->shadow_h_tot_disp = aty_ld_le32(CRTC_H_TOTAL_DISP, par);
664 crtc->shadow_h_sync_strt_wid = aty_ld_le32(CRTC_H_SYNC_STRT_WID, par);
665 crtc->shadow_v_tot_disp = aty_ld_le32(CRTC_V_TOTAL_DISP, par);
666 crtc->shadow_v_sync_strt_wid = aty_ld_le32(CRTC_V_SYNC_STRT_WID, par);
667
668 aty_st_le32(LCD_GEN_CNTL, crtc->lcd_gen_cntl, par);
669 }
670 #endif /* CONFIG_FB_ATY_GENERIC_LCD */
671 }
672
673 static void aty_set_crtc(const struct atyfb_par *par, const struct crtc *crtc)
674 {
675 #ifdef CONFIG_FB_ATY_GENERIC_LCD
676 if (par->lcd_table != 0) {
677 /* stop CRTC */
678 aty_st_le32(CRTC_GEN_CNTL, crtc->gen_cntl & ~(CRTC_EXT_DISP_EN | CRTC_EN), par);
679
680 /* update non-shadow registers first */
681 aty_st_lcd(CONFIG_PANEL, crtc->lcd_config_panel, par);
682 aty_st_lcd(LCD_GEN_CNTL, crtc->lcd_gen_cntl &
683 ~(CRTC_RW_SELECT | SHADOW_EN | SHADOW_RW_EN), par);
684
685 /* temporarily disable stretching */
686 aty_st_lcd(HORZ_STRETCHING,
687 crtc->horz_stretching &
688 ~(HORZ_STRETCH_MODE | HORZ_STRETCH_EN), par);
689 aty_st_lcd(VERT_STRETCHING,
690 crtc->vert_stretching &
691 ~(VERT_STRETCH_RATIO1 | VERT_STRETCH_RATIO2 |
692 VERT_STRETCH_USE0 | VERT_STRETCH_EN), par);
693 }
694 #endif
695 /* turn off CRT */
696 aty_st_le32(CRTC_GEN_CNTL, crtc->gen_cntl & ~CRTC_EN, par);
697
698 DPRINTK("setting up CRTC\n");
699 DPRINTK("set primary CRT to %ix%i %c%c composite %c\n",
700 ((((crtc->h_tot_disp>>16) & 0xff) + 1)<<3), (((crtc->v_tot_disp>>16) & 0x7ff) + 1),
701 (crtc->h_sync_strt_wid & 0x200000)?'N':'P', (crtc->v_sync_strt_wid & 0x200000)?'N':'P',
702 (crtc->gen_cntl & CRTC_CSYNC_EN)?'P':'N');
703
704 DPRINTK("CRTC_H_TOTAL_DISP: %x\n",crtc->h_tot_disp);
705 DPRINTK("CRTC_H_SYNC_STRT_WID: %x\n",crtc->h_sync_strt_wid);
706 DPRINTK("CRTC_V_TOTAL_DISP: %x\n",crtc->v_tot_disp);
707 DPRINTK("CRTC_V_SYNC_STRT_WID: %x\n",crtc->v_sync_strt_wid);
708 DPRINTK("CRTC_OFF_PITCH: %x\n", crtc->off_pitch);
709 DPRINTK("CRTC_VLINE_CRNT_VLINE: %x\n", crtc->vline_crnt_vline);
710 DPRINTK("CRTC_GEN_CNTL: %x\n",crtc->gen_cntl);
711
712 aty_st_le32(CRTC_H_TOTAL_DISP, crtc->h_tot_disp, par);
713 aty_st_le32(CRTC_H_SYNC_STRT_WID, crtc->h_sync_strt_wid, par);
714 aty_st_le32(CRTC_V_TOTAL_DISP, crtc->v_tot_disp, par);
715 aty_st_le32(CRTC_V_SYNC_STRT_WID, crtc->v_sync_strt_wid, par);
716 aty_st_le32(CRTC_OFF_PITCH, crtc->off_pitch, par);
717 aty_st_le32(CRTC_VLINE_CRNT_VLINE, crtc->vline_crnt_vline, par);
718
719 aty_st_le32(CRTC_GEN_CNTL, crtc->gen_cntl, par);
720 #if 0
721 FIXME
722 if (par->accel_flags & FB_ACCELF_TEXT)
723 aty_init_engine(par, info);
724 #endif
725 #ifdef CONFIG_FB_ATY_GENERIC_LCD
726 /* after setting the CRTC registers we should set the LCD registers. */
727 if (par->lcd_table != 0) {
728 /* switch to shadow registers */
729 aty_st_lcd(LCD_GEN_CNTL, (crtc->lcd_gen_cntl & ~CRTC_RW_SELECT) |
730 (SHADOW_EN | SHADOW_RW_EN), par);
731
732 DPRINTK("set shadow CRT to %ix%i %c%c\n",
733 ((((crtc->shadow_h_tot_disp>>16) & 0xff) + 1)<<3), (((crtc->shadow_v_tot_disp>>16) & 0x7ff) + 1),
734 (crtc->shadow_h_sync_strt_wid & 0x200000)?'N':'P', (crtc->shadow_v_sync_strt_wid & 0x200000)?'N':'P');
735
736 DPRINTK("SHADOW CRTC_H_TOTAL_DISP: %x\n", crtc->shadow_h_tot_disp);
737 DPRINTK("SHADOW CRTC_H_SYNC_STRT_WID: %x\n", crtc->shadow_h_sync_strt_wid);
738 DPRINTK("SHADOW CRTC_V_TOTAL_DISP: %x\n", crtc->shadow_v_tot_disp);
739 DPRINTK("SHADOW CRTC_V_SYNC_STRT_WID: %x\n", crtc->shadow_v_sync_strt_wid);
740
741 aty_st_le32(CRTC_H_TOTAL_DISP, crtc->shadow_h_tot_disp, par);
742 aty_st_le32(CRTC_H_SYNC_STRT_WID, crtc->shadow_h_sync_strt_wid, par);
743 aty_st_le32(CRTC_V_TOTAL_DISP, crtc->shadow_v_tot_disp, par);
744 aty_st_le32(CRTC_V_SYNC_STRT_WID, crtc->shadow_v_sync_strt_wid, par);
745
746 /* restore CRTC selection & shadow state and enable stretching */
747 DPRINTK("LCD_GEN_CNTL: %x\n", crtc->lcd_gen_cntl);
748 DPRINTK("HORZ_STRETCHING: %x\n", crtc->horz_stretching);
749 DPRINTK("VERT_STRETCHING: %x\n", crtc->vert_stretching);
750 if(!M64_HAS(LT_LCD_REGS))
751 DPRINTK("EXT_VERT_STRETCH: %x\n", crtc->ext_vert_stretch);
752
753 aty_st_lcd(LCD_GEN_CNTL, crtc->lcd_gen_cntl, par);
754 aty_st_lcd(HORZ_STRETCHING, crtc->horz_stretching, par);
755 aty_st_lcd(VERT_STRETCHING, crtc->vert_stretching, par);
756 if(!M64_HAS(LT_LCD_REGS)) {
757 aty_st_lcd(EXT_VERT_STRETCH, crtc->ext_vert_stretch, par);
758 aty_ld_le32(LCD_INDEX, par);
759 aty_st_le32(LCD_INDEX, crtc->lcd_index, par);
760 }
761 }
762 #endif /* CONFIG_FB_ATY_GENERIC_LCD */
763 }
764
765 static int aty_var_to_crtc(const struct fb_info *info,
766 const struct fb_var_screeninfo *var, struct crtc *crtc)
767 {
768 struct atyfb_par *par = (struct atyfb_par *) info->par;
769 u32 xres, yres, vxres, vyres, xoffset, yoffset, bpp;
770 u32 sync, vmode, vdisplay;
771 u32 h_total, h_disp, h_sync_strt, h_sync_end, h_sync_dly, h_sync_wid, h_sync_pol;
772 u32 v_total, v_disp, v_sync_strt, v_sync_end, v_sync_wid, v_sync_pol, c_sync;
773 u32 pix_width, dp_pix_width, dp_chain_mask;
774
775 /* input */
776 xres = var->xres;
777 yres = var->yres;
778 vxres = var->xres_virtual;
779 vyres = var->yres_virtual;
780 xoffset = var->xoffset;
781 yoffset = var->yoffset;
782 bpp = var->bits_per_pixel;
783 if (bpp == 16)
784 bpp = (var->green.length == 5) ? 15 : 16;
785 sync = var->sync;
786 vmode = var->vmode;
787
788 /* convert (and round up) and validate */
789 if (vxres < xres + xoffset)
790 vxres = xres + xoffset;
791 h_disp = xres;
792
793 if (vyres < yres + yoffset)
794 vyres = yres + yoffset;
795 v_disp = yres;
796
797 if (bpp <= 8) {
798 bpp = 8;
799 pix_width = CRTC_PIX_WIDTH_8BPP;
800 dp_pix_width =
801 HOST_8BPP | SRC_8BPP | DST_8BPP |
802 BYTE_ORDER_LSB_TO_MSB;
803 dp_chain_mask = DP_CHAIN_8BPP;
804 } else if (bpp <= 15) {
805 bpp = 16;
806 pix_width = CRTC_PIX_WIDTH_15BPP;
807 dp_pix_width = HOST_15BPP | SRC_15BPP | DST_15BPP |
808 BYTE_ORDER_LSB_TO_MSB;
809 dp_chain_mask = DP_CHAIN_15BPP;
810 } else if (bpp <= 16) {
811 bpp = 16;
812 pix_width = CRTC_PIX_WIDTH_16BPP;
813 dp_pix_width = HOST_16BPP | SRC_16BPP | DST_16BPP |
814 BYTE_ORDER_LSB_TO_MSB;
815 dp_chain_mask = DP_CHAIN_16BPP;
816 } else if (bpp <= 24 && M64_HAS(INTEGRATED)) {
817 bpp = 24;
818 pix_width = CRTC_PIX_WIDTH_24BPP;
819 dp_pix_width =
820 HOST_8BPP | SRC_8BPP | DST_8BPP |
821 BYTE_ORDER_LSB_TO_MSB;
822 dp_chain_mask = DP_CHAIN_24BPP;
823 } else if (bpp <= 32) {
824 bpp = 32;
825 pix_width = CRTC_PIX_WIDTH_32BPP;
826 dp_pix_width = HOST_32BPP | SRC_32BPP | DST_32BPP |
827 BYTE_ORDER_LSB_TO_MSB;
828 dp_chain_mask = DP_CHAIN_32BPP;
829 } else
830 FAIL("invalid bpp");
831
832 if (vxres * vyres * bpp / 8 > info->fix.smem_len)
833 FAIL("not enough video RAM");
834
835 h_sync_pol = sync & FB_SYNC_HOR_HIGH_ACT ? 0 : 1;
836 v_sync_pol = sync & FB_SYNC_VERT_HIGH_ACT ? 0 : 1;
837
838 if((xres > 1600) || (yres > 1200)) {
839 FAIL("MACH64 chips are designed for max 1600x1200\n"
840 "select anoter resolution.");
841 }
842 h_sync_strt = h_disp + var->right_margin;
843 h_sync_end = h_sync_strt + var->hsync_len;
844 h_sync_dly = var->right_margin & 7;
845 h_total = h_sync_end + h_sync_dly + var->left_margin;
846
847 v_sync_strt = v_disp + var->lower_margin;
848 v_sync_end = v_sync_strt + var->vsync_len;
849 v_total = v_sync_end + var->upper_margin;
850
851 #ifdef CONFIG_FB_ATY_GENERIC_LCD
852 if (par->lcd_table != 0) {
853 if(!M64_HAS(LT_LCD_REGS)) {
854 u32 lcd_index = aty_ld_le32(LCD_INDEX, par);
855 crtc->lcd_index = lcd_index &
856 ~(LCD_INDEX_MASK | LCD_DISPLAY_DIS | LCD_SRC_SEL | CRTC2_DISPLAY_DIS);
857 aty_st_le32(LCD_INDEX, lcd_index, par);
858 }
859
860 if (!M64_HAS(MOBIL_BUS))
861 crtc->lcd_index |= CRTC2_DISPLAY_DIS;
862
863 crtc->lcd_config_panel = aty_ld_lcd(CONFIG_PANEL, par) | 0x4000;
864 crtc->lcd_gen_cntl = aty_ld_lcd(LCD_GEN_CNTL, par) & ~CRTC_RW_SELECT;
865
866 crtc->lcd_gen_cntl &=
867 ~(HORZ_DIVBY2_EN | DIS_HOR_CRT_DIVBY2 | TVCLK_PM_EN |
868 /*VCLK_DAC_PM_EN | USE_SHADOWED_VEND |*/
869 USE_SHADOWED_ROWCUR | SHADOW_EN | SHADOW_RW_EN);
870 crtc->lcd_gen_cntl |= DONT_SHADOW_VPAR | LOCK_8DOT;
871
872 if((crtc->lcd_gen_cntl & LCD_ON) &&
873 ((xres > par->lcd_width) || (yres > par->lcd_height))) {
874 /* We cannot display the mode on the LCD. If the CRT is enabled
875 we can turn off the LCD.
876 If the CRT is off, it isn't a good idea to switch it on; we don't
877 know if one is connected. So it's better to fail then.
878 */
879 if (crtc->lcd_gen_cntl & CRT_ON) {
880 if (!(var->activate & FB_ACTIVATE_TEST))
881 PRINTKI("Disable LCD panel, because video mode does not fit.\n");
882 crtc->lcd_gen_cntl &= ~LCD_ON;
883 /*aty_st_lcd(LCD_GEN_CNTL, crtc->lcd_gen_cntl, par);*/
884 } else {
885 if (!(var->activate & FB_ACTIVATE_TEST))
886 PRINTKE("Video mode exceeds size of LCD panel.\nConnect this computer to a conventional monitor if you really need this mode.\n");
887 return -EINVAL;
888 }
889 }
890 }
891
892 if ((par->lcd_table != 0) && (crtc->lcd_gen_cntl & LCD_ON)) {
893 int VScan = 1;
894 /* bpp -> bytespp, 1,4 -> 0; 8 -> 2; 15,16 -> 1; 24 -> 6; 32 -> 5
895 const u8 DFP_h_sync_dly_LT[] = { 0, 2, 1, 6, 5 };
896 const u8 ADD_to_strt_wid_and_dly_LT_DAC[] = { 0, 5, 6, 9, 9, 12, 12 }; */
897
898 vmode &= ~(FB_VMODE_DOUBLE | FB_VMODE_INTERLACED);
899
900 /* This is horror! When we simulate, say 640x480 on an 800x600
901 LCD monitor, the CRTC should be programmed 800x600 values for
902 the non visible part, but 640x480 for the visible part.
903 This code has been tested on a laptop with it's 1400x1050 LCD
904 monitor and a conventional monitor both switched on.
905 Tested modes: 1280x1024, 1152x864, 1024x768, 800x600,
906 works with little glitches also with DOUBLESCAN modes
907 */
908 if (yres < par->lcd_height) {
909 VScan = par->lcd_height / yres;
910 if(VScan > 1) {
911 VScan = 2;
912 vmode |= FB_VMODE_DOUBLE;
913 }
914 }
915
916 h_sync_strt = h_disp + par->lcd_right_margin;
917 h_sync_end = h_sync_strt + par->lcd_hsync_len;
918 h_sync_dly = /*DFP_h_sync_dly[ ( bpp + 1 ) / 3 ]; */par->lcd_hsync_dly;
919 h_total = h_disp + par->lcd_hblank_len;
920
921 v_sync_strt = v_disp + par->lcd_lower_margin / VScan;
922 v_sync_end = v_sync_strt + par->lcd_vsync_len / VScan;
923 v_total = v_disp + par->lcd_vblank_len / VScan;
924 }
925 #endif /* CONFIG_FB_ATY_GENERIC_LCD */
926
927 h_disp = (h_disp >> 3) - 1;
928 h_sync_strt = (h_sync_strt >> 3) - 1;
929 h_sync_end = (h_sync_end >> 3) - 1;
930 h_total = (h_total >> 3) - 1;
931 h_sync_wid = h_sync_end - h_sync_strt;
932
933 FAIL_MAX("h_disp too large", h_disp, 0xff);
934 FAIL_MAX("h_sync_strt too large", h_sync_strt, 0x1ff);
935 /*FAIL_MAX("h_sync_wid too large", h_sync_wid, 0x1f);*/
936 if(h_sync_wid > 0x1f)
937 h_sync_wid = 0x1f;
938 FAIL_MAX("h_total too large", h_total, 0x1ff);
939
940 if (vmode & FB_VMODE_DOUBLE) {
941 v_disp <<= 1;
942 v_sync_strt <<= 1;
943 v_sync_end <<= 1;
944 v_total <<= 1;
945 }
946
947 vdisplay = yres;
948 #ifdef CONFIG_FB_ATY_GENERIC_LCD
949 if ((par->lcd_table != 0) && (crtc->lcd_gen_cntl & LCD_ON))
950 vdisplay = par->lcd_height;
951 #endif
952
953 v_disp--;
954 v_sync_strt--;
955 v_sync_end--;
956 v_total--;
957 v_sync_wid = v_sync_end - v_sync_strt;
958
959 FAIL_MAX("v_disp too large", v_disp, 0x7ff);
960 FAIL_MAX("v_sync_stsrt too large", v_sync_strt, 0x7ff);
961 /*FAIL_MAX("v_sync_wid too large", v_sync_wid, 0x1f);*/
962 if(v_sync_wid > 0x1f)
963 v_sync_wid = 0x1f;
964 FAIL_MAX("v_total too large", v_total, 0x7ff);
965
966 c_sync = sync & FB_SYNC_COMP_HIGH_ACT ? CRTC_CSYNC_EN : 0;
967
968 /* output */
969 crtc->vxres = vxres;
970 crtc->vyres = vyres;
971 crtc->xoffset = xoffset;
972 crtc->yoffset = yoffset;
973 crtc->bpp = bpp;
974 crtc->off_pitch = ((yoffset*vxres+xoffset)*bpp/64) | (vxres<<19);
975 crtc->vline_crnt_vline = 0;
976
977 crtc->h_tot_disp = h_total | (h_disp<<16);
978 crtc->h_sync_strt_wid = (h_sync_strt & 0xff) | (h_sync_dly<<8) |
979 ((h_sync_strt & 0x100)<<4) | (h_sync_wid<<16) | (h_sync_pol<<21);
980 crtc->v_tot_disp = v_total | (v_disp<<16);
981 crtc->v_sync_strt_wid = v_sync_strt | (v_sync_wid<<16) | (v_sync_pol<<21);
982
983 /* crtc->gen_cntl = aty_ld_le32(CRTC_GEN_CNTL, par) & CRTC_PRESERVED_MASK; */
984 crtc->gen_cntl = CRTC_EXT_DISP_EN | CRTC_EN | pix_width | c_sync;
985 crtc->gen_cntl |= CRTC_VGA_LINEAR;
986
987 /* Enable doublescan mode if requested */
988 if (vmode & FB_VMODE_DOUBLE)
989 crtc->gen_cntl |= CRTC_DBL_SCAN_EN;
990 /* Enable interlaced mode if requested */
991 if (vmode & FB_VMODE_INTERLACED)
992 crtc->gen_cntl |= CRTC_INTERLACE_EN;
993 #ifdef CONFIG_FB_ATY_GENERIC_LCD
994 if (par->lcd_table != 0) {
995 vdisplay = yres;
996 if(vmode & FB_VMODE_DOUBLE)
997 vdisplay <<= 1;
998 crtc->gen_cntl &= ~(CRTC2_EN | CRTC2_PIX_WIDTH);
999 crtc->lcd_gen_cntl &= ~(HORZ_DIVBY2_EN | DIS_HOR_CRT_DIVBY2 |
1000 /*TVCLK_PM_EN | VCLK_DAC_PM_EN |*/
1001 USE_SHADOWED_VEND | USE_SHADOWED_ROWCUR | SHADOW_EN | SHADOW_RW_EN);
1002 crtc->lcd_gen_cntl |= (DONT_SHADOW_VPAR/* | LOCK_8DOT*/);
1003
1004 /* MOBILITY M1 tested, FIXME: LT */
1005 crtc->horz_stretching = aty_ld_lcd(HORZ_STRETCHING, par);
1006 if (!M64_HAS(LT_LCD_REGS))
1007 crtc->ext_vert_stretch = aty_ld_lcd(EXT_VERT_STRETCH, par) &
1008 ~(AUTO_VERT_RATIO | VERT_STRETCH_MODE | VERT_STRETCH_RATIO3);
1009
1010 crtc->horz_stretching &=
1011 ~(HORZ_STRETCH_RATIO | HORZ_STRETCH_LOOP | AUTO_HORZ_RATIO |
1012 HORZ_STRETCH_MODE | HORZ_STRETCH_EN);
1013 if (xres < par->lcd_width && crtc->lcd_gen_cntl & LCD_ON) {
1014 do {
1015 /*
1016 * The horizontal blender misbehaves when HDisplay is less than a
1017 * a certain threshold (440 for a 1024-wide panel). It doesn't
1018 * stretch such modes enough. Use pixel replication instead of
1019 * blending to stretch modes that can be made to exactly fit the
1020 * panel width. The undocumented "NoLCDBlend" option allows the
1021 * pixel-replicated mode to be slightly wider or narrower than the
1022 * panel width. It also causes a mode that is exactly half as wide
1023 * as the panel to be pixel-replicated, rather than blended.
1024 */
1025 int HDisplay = xres & ~7;
1026 int nStretch = par->lcd_width / HDisplay;
1027 int Remainder = par->lcd_width % HDisplay;
1028
1029 if ((!Remainder && ((nStretch > 2))) ||
1030 (((HDisplay * 16) / par->lcd_width) < 7)) {
1031 static const char StretchLoops[] = {10, 12, 13, 15, 16};
1032 int horz_stretch_loop = -1, BestRemainder;
1033 int Numerator = HDisplay, Denominator = par->lcd_width;
1034 int Index = 5;
1035 ATIReduceRatio(&Numerator, &Denominator);
1036
1037 BestRemainder = (Numerator * 16) / Denominator;
1038 while (--Index >= 0) {
1039 Remainder = ((Denominator - Numerator) * StretchLoops[Index]) %
1040 Denominator;
1041 if (Remainder < BestRemainder) {
1042 horz_stretch_loop = Index;
1043 if (!(BestRemainder = Remainder))
1044 break;
1045 }
1046 }
1047
1048 if ((horz_stretch_loop >= 0) && !BestRemainder) {
1049 int horz_stretch_ratio = 0, Accumulator = 0;
1050 int reuse_previous = 1;
1051
1052 Index = StretchLoops[horz_stretch_loop];
1053
1054 while (--Index >= 0) {
1055 if (Accumulator > 0)
1056 horz_stretch_ratio |= reuse_previous;
1057 else
1058 Accumulator += Denominator;
1059 Accumulator -= Numerator;
1060 reuse_previous <<= 1;
1061 }
1062
1063 crtc->horz_stretching |= (HORZ_STRETCH_EN |
1064 ((horz_stretch_loop & HORZ_STRETCH_LOOP) << 16) |
1065 (horz_stretch_ratio & HORZ_STRETCH_RATIO));
1066 break; /* Out of the do { ... } while (0) */
1067 }
1068 }
1069
1070 crtc->horz_stretching |= (HORZ_STRETCH_MODE | HORZ_STRETCH_EN |
1071 (((HDisplay * (HORZ_STRETCH_BLEND + 1)) / par->lcd_width) & HORZ_STRETCH_BLEND));
1072 } while (0);
1073 }
1074
1075 if (vdisplay < par->lcd_height && crtc->lcd_gen_cntl & LCD_ON) {
1076 crtc->vert_stretching = (VERT_STRETCH_USE0 | VERT_STRETCH_EN |
1077 (((vdisplay * (VERT_STRETCH_RATIO0 + 1)) / par->lcd_height) & VERT_STRETCH_RATIO0));
1078
1079 if (!M64_HAS(LT_LCD_REGS) &&
1080 xres <= (M64_HAS(MOBIL_BUS)?1024:800))
1081 crtc->ext_vert_stretch |= VERT_STRETCH_MODE;
1082 } else {
1083 /*
1084 * Don't use vertical blending if the mode is too wide or not
1085 * vertically stretched.
1086 */
1087 crtc->vert_stretching = 0;
1088 }
1089 /* copy to shadow crtc */
1090 crtc->shadow_h_tot_disp = crtc->h_tot_disp;
1091 crtc->shadow_h_sync_strt_wid = crtc->h_sync_strt_wid;
1092 crtc->shadow_v_tot_disp = crtc->v_tot_disp;
1093 crtc->shadow_v_sync_strt_wid = crtc->v_sync_strt_wid;
1094 }
1095 #endif /* CONFIG_FB_ATY_GENERIC_LCD */
1096
1097 if (M64_HAS(MAGIC_FIFO)) {
1098 /* FIXME: display FIFO low watermark values */
1099 crtc->gen_cntl |= (aty_ld_le32(CRTC_GEN_CNTL, par) & CRTC_FIFO_LWM);
1100 }
1101 crtc->dp_pix_width = dp_pix_width;
1102 crtc->dp_chain_mask = dp_chain_mask;
1103
1104 return 0;
1105 }
1106
1107 static int aty_crtc_to_var(const struct crtc *crtc, struct fb_var_screeninfo *var)
1108 {
1109 u32 xres, yres, bpp, left, right, upper, lower, hslen, vslen, sync;
1110 u32 h_total, h_disp, h_sync_strt, h_sync_dly, h_sync_wid,
1111 h_sync_pol;
1112 u32 v_total, v_disp, v_sync_strt, v_sync_wid, v_sync_pol, c_sync;
1113 u32 pix_width;
1114 u32 double_scan, interlace;
1115
1116 /* input */
1117 h_total = crtc->h_tot_disp & 0x1ff;
1118 h_disp = (crtc->h_tot_disp >> 16) & 0xff;
1119 h_sync_strt = (crtc->h_sync_strt_wid & 0xff) | ((crtc->h_sync_strt_wid >> 4) & 0x100);
1120 h_sync_dly = (crtc->h_sync_strt_wid >> 8) & 0x7;
1121 h_sync_wid = (crtc->h_sync_strt_wid >> 16) & 0x1f;
1122 h_sync_pol = (crtc->h_sync_strt_wid >> 21) & 0x1;
1123 v_total = crtc->v_tot_disp & 0x7ff;
1124 v_disp = (crtc->v_tot_disp >> 16) & 0x7ff;
1125 v_sync_strt = crtc->v_sync_strt_wid & 0x7ff;
1126 v_sync_wid = (crtc->v_sync_strt_wid >> 16) & 0x1f;
1127 v_sync_pol = (crtc->v_sync_strt_wid >> 21) & 0x1;
1128 c_sync = crtc->gen_cntl & CRTC_CSYNC_EN ? 1 : 0;
1129 pix_width = crtc->gen_cntl & CRTC_PIX_WIDTH_MASK;
1130 double_scan = crtc->gen_cntl & CRTC_DBL_SCAN_EN;
1131 interlace = crtc->gen_cntl & CRTC_INTERLACE_EN;
1132
1133 /* convert */
1134 xres = (h_disp + 1) * 8;
1135 yres = v_disp + 1;
1136 left = (h_total - h_sync_strt - h_sync_wid) * 8 - h_sync_dly;
1137 right = (h_sync_strt - h_disp) * 8 + h_sync_dly;
1138 hslen = h_sync_wid * 8;
1139 upper = v_total - v_sync_strt - v_sync_wid;
1140 lower = v_sync_strt - v_disp;
1141 vslen = v_sync_wid;
1142 sync = (h_sync_pol ? 0 : FB_SYNC_HOR_HIGH_ACT) |
1143 (v_sync_pol ? 0 : FB_SYNC_VERT_HIGH_ACT) |
1144 (c_sync ? FB_SYNC_COMP_HIGH_ACT : 0);
1145
1146 switch (pix_width) {
1147 #if 0
1148 case CRTC_PIX_WIDTH_4BPP:
1149 bpp = 4;
1150 var->red.offset = 0;
1151 var->red.length = 8;
1152 var->green.offset = 0;
1153 var->green.length = 8;
1154 var->blue.offset = 0;
1155 var->blue.length = 8;
1156 var->transp.offset = 0;
1157 var->transp.length = 0;
1158 break;
1159 #endif
1160 case CRTC_PIX_WIDTH_8BPP:
1161 bpp = 8;
1162 var->red.offset = 0;
1163 var->red.length = 8;
1164 var->green.offset = 0;
1165 var->green.length = 8;
1166 var->blue.offset = 0;
1167 var->blue.length = 8;
1168 var->transp.offset = 0;
1169 var->transp.length = 0;
1170 break;
1171 case CRTC_PIX_WIDTH_15BPP: /* RGB 555 */
1172 bpp = 16;
1173 var->red.offset = 10;
1174 var->red.length = 5;
1175 var->green.offset = 5;
1176 var->green.length = 5;
1177 var->blue.offset = 0;
1178 var->blue.length = 5;
1179 var->transp.offset = 0;
1180 var->transp.length = 0;
1181 break;
1182 case CRTC_PIX_WIDTH_16BPP: /* RGB 565 */
1183 bpp = 16;
1184 var->red.offset = 11;
1185 var->red.length = 5;
1186 var->green.offset = 5;
1187 var->green.length = 6;
1188 var->blue.offset = 0;
1189 var->blue.length = 5;
1190 var->transp.offset = 0;
1191 var->transp.length = 0;
1192 break;
1193 case CRTC_PIX_WIDTH_24BPP: /* RGB 888 */
1194 bpp = 24;
1195 var->red.offset = 16;
1196 var->red.length = 8;
1197 var->green.offset = 8;
1198 var->green.length = 8;
1199 var->blue.offset = 0;
1200 var->blue.length = 8;
1201 var->transp.offset = 0;
1202 var->transp.length = 0;
1203 break;
1204 case CRTC_PIX_WIDTH_32BPP: /* ARGB 8888 */
1205 bpp = 32;
1206 var->red.offset = 16;
1207 var->red.length = 8;
1208 var->green.offset = 8;
1209 var->green.length = 8;
1210 var->blue.offset = 0;
1211 var->blue.length = 8;
1212 var->transp.offset = 24;
1213 var->transp.length = 8;
1214 break;
1215 default:
1216 PRINTKE("Invalid pixel width\n");
1217 return -EINVAL;
1218 }
1219
1220 /* output */
1221 var->xres = xres;
1222 var->yres = yres;
1223 var->xres_virtual = crtc->vxres;
1224 var->yres_virtual = crtc->vyres;
1225 var->bits_per_pixel = bpp;
1226 var->left_margin = left;
1227 var->right_margin = right;
1228 var->upper_margin = upper;
1229 var->lower_margin = lower;
1230 var->hsync_len = hslen;
1231 var->vsync_len = vslen;
1232 var->sync = sync;
1233 var->vmode = FB_VMODE_NONINTERLACED;
1234 /* In double scan mode, the vertical parameters are doubled, so we need to
1235 half them to get the right values.
1236 In interlaced mode the values are already correct, so no correction is
1237 necessary.
1238 */
1239 if (interlace)
1240 var->vmode = FB_VMODE_INTERLACED;
1241
1242 if (double_scan) {
1243 var->vmode = FB_VMODE_DOUBLE;
1244 var->yres>>=1;
1245 var->upper_margin>>=1;
1246 var->lower_margin>>=1;
1247 var->vsync_len>>=1;
1248 }
1249
1250 return 0;
1251 }
1252
1253 /* ------------------------------------------------------------------------- */
1254
1255 static int atyfb_set_par(struct fb_info *info)
1256 {
1257 struct atyfb_par *par = (struct atyfb_par *) info->par;
1258 struct fb_var_screeninfo *var = &info->var;
1259 u32 tmp, pixclock;
1260 int err;
1261 #ifdef DEBUG
1262 struct fb_var_screeninfo debug;
1263 u32 pixclock_in_ps;
1264 #endif
1265 if (par->asleep)
1266 return 0;
1267
1268 if ((err = aty_var_to_crtc(info, var, &par->crtc)))
1269 return err;
1270
1271 pixclock = atyfb_get_pixclock(var, par);
1272
1273 if (pixclock == 0) {
1274 PRINTKE("Invalid pixclock\n");
1275 return -EINVAL;
1276 } else {
1277 if((err = par->pll_ops->var_to_pll(info, pixclock, var->bits_per_pixel, &par->pll)))
1278 return err;
1279 }
1280
1281 par->accel_flags = var->accel_flags; /* hack */
1282
1283 if (var->accel_flags) {
1284 info->fbops->fb_sync = atyfb_sync;
1285 info->flags &= ~FBINFO_HWACCEL_DISABLED;
1286 } else {
1287 info->fbops->fb_sync = NULL;
1288 info->flags |= FBINFO_HWACCEL_DISABLED;
1289 }
1290
1291 if (par->blitter_may_be_busy)
1292 wait_for_idle(par);
1293
1294 aty_set_crtc(par, &par->crtc);
1295 par->dac_ops->set_dac(info, &par->pll, var->bits_per_pixel, par->accel_flags);
1296 par->pll_ops->set_pll(info, &par->pll);
1297
1298 #ifdef DEBUG
1299 if(par->pll_ops && par->pll_ops->pll_to_var)
1300 pixclock_in_ps = par->pll_ops->pll_to_var(info, &(par->pll));
1301 else
1302 pixclock_in_ps = 0;
1303
1304 if(0 == pixclock_in_ps) {
1305 PRINTKE("ALERT ops->pll_to_var get 0\n");
1306 pixclock_in_ps = pixclock;
1307 }
1308
1309 memset(&debug, 0, sizeof(debug));
1310 if(!aty_crtc_to_var(&(par->crtc), &debug)) {
1311 u32 hSync, vRefresh;
1312 u32 h_disp, h_sync_strt, h_sync_end, h_total;
1313 u32 v_disp, v_sync_strt, v_sync_end, v_total;
1314
1315 h_disp = debug.xres;
1316 h_sync_strt = h_disp + debug.right_margin;
1317 h_sync_end = h_sync_strt + debug.hsync_len;
1318 h_total = h_sync_end + debug.left_margin;
1319 v_disp = debug.yres;
1320 v_sync_strt = v_disp + debug.lower_margin;
1321 v_sync_end = v_sync_strt + debug.vsync_len;
1322 v_total = v_sync_end + debug.upper_margin;
1323
1324 hSync = 1000000000 / (pixclock_in_ps * h_total);
1325 vRefresh = (hSync * 1000) / v_total;
1326 if (par->crtc.gen_cntl & CRTC_INTERLACE_EN)
1327 vRefresh *= 2;
1328 if (par->crtc.gen_cntl & CRTC_DBL_SCAN_EN)
1329 vRefresh /= 2;
1330
1331 DPRINTK("atyfb_set_par\n");
1332 DPRINTK(" Set Visible Mode to %ix%i-%i\n", var->xres, var->yres, var->bits_per_pixel);
1333 DPRINTK(" Virtual resolution %ix%i, pixclock_in_ps %i (calculated %i)\n",
1334 var->xres_virtual, var->yres_virtual, pixclock, pixclock_in_ps);
1335 DPRINTK(" Dot clock: %i MHz\n", 1000000 / pixclock_in_ps);
1336 DPRINTK(" Horizontal sync: %i kHz\n", hSync);
1337 DPRINTK(" Vertical refresh: %i Hz\n", vRefresh);
1338 DPRINTK(" x style: %i.%03i %i %i %i %i %i %i %i %i\n",
1339 1000000 / pixclock_in_ps, 1000000 % pixclock_in_ps,
1340 h_disp, h_sync_strt, h_sync_end, h_total,
1341 v_disp, v_sync_strt, v_sync_end, v_total);
1342 DPRINTK(" fb style: %i %i %i %i %i %i %i %i %i\n",
1343 pixclock_in_ps,
1344 debug.left_margin, h_disp, debug.right_margin, debug.hsync_len,
1345 debug.upper_margin, v_disp, debug.lower_margin, debug.vsync_len);
1346 }
1347 #endif /* DEBUG */
1348
1349 if (!M64_HAS(INTEGRATED)) {
1350 /* Don't forget MEM_CNTL */
1351 tmp = aty_ld_le32(MEM_CNTL, par) & 0xf0ffffff;
1352 switch (var->bits_per_pixel) {
1353 case 8:
1354 tmp |= 0x02000000;
1355 break;
1356 case 16:
1357 tmp |= 0x03000000;
1358 break;
1359 case 32:
1360 tmp |= 0x06000000;
1361 break;
1362 }
1363 aty_st_le32(MEM_CNTL, tmp, par);
1364 } else {
1365 tmp = aty_ld_le32(MEM_CNTL, par) & 0xf00fffff;
1366 if (!M64_HAS(MAGIC_POSTDIV))
1367 tmp |= par->mem_refresh_rate << 20;
1368 switch (var->bits_per_pixel) {
1369 case 8:
1370 case 24:
1371 tmp |= 0x00000000;
1372 break;
1373 case 16:
1374 tmp |= 0x04000000;
1375 break;
1376 case 32:
1377 tmp |= 0x08000000;
1378 break;
1379 }
1380 if (M64_HAS(CT_BUS)) {
1381 aty_st_le32(DAC_CNTL, 0x87010184, par);
1382 aty_st_le32(BUS_CNTL, 0x680000f9, par);
1383 } else if (M64_HAS(VT_BUS)) {
1384 aty_st_le32(DAC_CNTL, 0x87010184, par);
1385 aty_st_le32(BUS_CNTL, 0x680000f9, par);
1386 } else if (M64_HAS(MOBIL_BUS)) {
1387 aty_st_le32(DAC_CNTL, 0x80010102, par);
1388 aty_st_le32(BUS_CNTL, 0x7b33a040 | (par->aux_start ? BUS_APER_REG_DIS : 0), par);
1389 } else {
1390 /* GT */
1391 aty_st_le32(DAC_CNTL, 0x86010102, par);
1392 aty_st_le32(BUS_CNTL, 0x7b23a040 | (par->aux_start ? BUS_APER_REG_DIS : 0), par);
1393 aty_st_le32(EXT_MEM_CNTL, aty_ld_le32(EXT_MEM_CNTL, par) | 0x5000001, par);
1394 }
1395 aty_st_le32(MEM_CNTL, tmp, par);
1396 }
1397 aty_st_8(DAC_MASK, 0xff, par);
1398
1399 info->fix.line_length = var->xres_virtual * var->bits_per_pixel/8;
1400 info->fix.visual = var->bits_per_pixel <= 8 ?
1401 FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_DIRECTCOLOR;
1402
1403 /* Initialize the graphics engine */
1404 if (par->accel_flags & FB_ACCELF_TEXT)
1405 aty_init_engine(par, info);
1406
1407 #ifdef CONFIG_BOOTX_TEXT
1408 btext_update_display(info->fix.smem_start,
1409 (((par->crtc.h_tot_disp >> 16) & 0xff) + 1) * 8,
1410 ((par->crtc.v_tot_disp >> 16) & 0x7ff) + 1,
1411 var->bits_per_pixel,
1412 par->crtc.vxres * var->bits_per_pixel / 8);
1413 #endif /* CONFIG_BOOTX_TEXT */
1414 #if 0
1415 /* switch to accelerator mode */
1416 if (!(par->crtc.gen_cntl & CRTC_EXT_DISP_EN))
1417 aty_st_le32(CRTC_GEN_CNTL, par->crtc.gen_cntl | CRTC_EXT_DISP_EN, par);
1418 #endif
1419 #ifdef DEBUG
1420 {
1421 /* dump non shadow CRTC, pll, LCD registers */
1422 int i; u32 base;
1423
1424 /* CRTC registers */
1425 base = 0x2000;
1426 printk("debug atyfb: Mach64 non-shadow register values:");
1427 for (i = 0; i < 256; i = i+4) {
1428 if(i%16 == 0) printk("\ndebug atyfb: 0x%04X: ", base + i);
1429 printk(" %08X", aty_ld_le32(i, par));
1430 }
1431 printk("\n\n");
1432
1433 #ifdef CONFIG_FB_ATY_CT
1434 /* PLL registers */
1435 base = 0x00;
1436 printk("debug atyfb: Mach64 PLL register values:");
1437 for (i = 0; i < 64; i++) {
1438 if(i%16 == 0) printk("\ndebug atyfb: 0x%02X: ", base + i);
1439 if(i%4 == 0) printk(" ");
1440 printk("%02X", aty_ld_pll_ct(i, par));
1441 }
1442 printk("\n\n");
1443 #endif /* CONFIG_FB_ATY_CT */
1444
1445 #ifdef CONFIG_FB_ATY_GENERIC_LCD
1446 if (par->lcd_table != 0) {
1447 /* LCD registers */
1448 base = 0x00;
1449 printk("debug atyfb: LCD register values:");
1450 if(M64_HAS(LT_LCD_REGS)) {
1451 for(i = 0; i <= POWER_MANAGEMENT; i++) {
1452 if(i == EXT_VERT_STRETCH)
1453 continue;
1454 printk("\ndebug atyfb: 0x%04X: ", lt_lcd_regs[i]);
1455 printk(" %08X", aty_ld_lcd(i, par));
1456 }
1457
1458 } else {
1459 for (i = 0; i < 64; i++) {
1460 if(i%4 == 0) printk("\ndebug atyfb: 0x%02X: ", base + i);
1461 printk(" %08X", aty_ld_lcd(i, par));
1462 }
1463 }
1464 printk("\n\n");
1465 }
1466 #endif /* CONFIG_FB_ATY_GENERIC_LCD */
1467 }
1468 #endif /* DEBUG */
1469 return 0;
1470 }
1471
1472 static int atyfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
1473 {
1474 struct atyfb_par *par = (struct atyfb_par *) info->par;
1475 int err;
1476 struct crtc crtc;
1477 union aty_pll pll;
1478 u32 pixclock;
1479
1480 memcpy(&pll, &(par->pll), sizeof(pll));
1481
1482 if((err = aty_var_to_crtc(info, var, &crtc)))
1483 return err;
1484
1485 pixclock = atyfb_get_pixclock(var, par);
1486
1487 if (pixclock == 0) {
1488 if (!(var->activate & FB_ACTIVATE_TEST))
1489 PRINTKE("Invalid pixclock\n");
1490 return -EINVAL;
1491 } else {
1492 if((err = par->pll_ops->var_to_pll(info, pixclock, var->bits_per_pixel, &pll)))
1493 return err;
1494 }
1495
1496 if (var->accel_flags & FB_ACCELF_TEXT)
1497 info->var.accel_flags = FB_ACCELF_TEXT;
1498 else
1499 info->var.accel_flags = 0;
1500
1501 #if 0 /* fbmon is not done. uncomment for 2.5.x -brad */
1502 if (!fbmon_valid_timings(pixclock, htotal, vtotal, info))
1503 return -EINVAL;
1504 #endif
1505 aty_crtc_to_var(&crtc, var);
1506 var->pixclock = par->pll_ops->pll_to_var(info, &pll);
1507 return 0;
1508 }
1509
1510 static void set_off_pitch(struct atyfb_par *par, const struct fb_info *info)
1511 {
1512 u32 xoffset = info->var.xoffset;
1513 u32 yoffset = info->var.yoffset;
1514 u32 vxres = par->crtc.vxres;
1515 u32 bpp = info->var.bits_per_pixel;
1516
1517 par->crtc.off_pitch = ((yoffset * vxres + xoffset) * bpp / 64) | (vxres << 19);
1518 }
1519
1520
1521 /*
1522 * Open/Release the frame buffer device
1523 */
1524
1525 static int atyfb_open(struct fb_info *info, int user)
1526 {
1527 struct atyfb_par *par = (struct atyfb_par *) info->par;
1528
1529 if (user) {
1530 par->open++;
1531 #ifdef __sparc__
1532 par->mmaped = 0;
1533 #endif
1534 }
1535 return (0);
1536 }
1537
1538 static irqreturn_t aty_irq(int irq, void *dev_id, struct pt_regs *fp)
1539 {
1540 struct atyfb_par *par = dev_id;
1541 int handled = 0;
1542 u32 int_cntl;
1543
1544 spin_lock(&par->int_lock);
1545
1546 int_cntl = aty_ld_le32(CRTC_INT_CNTL, par);
1547
1548 if (int_cntl & CRTC_VBLANK_INT) {
1549 /* clear interrupt */
1550 aty_st_le32(CRTC_INT_CNTL, (int_cntl & CRTC_INT_EN_MASK) | CRTC_VBLANK_INT_AK, par);
1551 par->vblank.count++;
1552 if (par->vblank.pan_display) {
1553 par->vblank.pan_display = 0;
1554 aty_st_le32(CRTC_OFF_PITCH, par->crtc.off_pitch, par);
1555 }
1556 wake_up_interruptible(&par->vblank.wait);
1557 handled = 1;
1558 }
1559
1560 spin_unlock(&par->int_lock);
1561
1562 return IRQ_RETVAL(handled);
1563 }
1564
1565 static int aty_enable_irq(struct atyfb_par *par, int reenable)
1566 {
1567 u32 int_cntl;
1568
1569 if (!test_and_set_bit(0, &par->irq_flags)) {
1570 if (request_irq(par->irq, aty_irq, IRQF_SHARED, "atyfb", par)) {
1571 clear_bit(0, &par->irq_flags);
1572 return -EINVAL;
1573 }
1574 spin_lock_irq(&par->int_lock);
1575 int_cntl = aty_ld_le32(CRTC_INT_CNTL, par) & CRTC_INT_EN_MASK;
1576 /* clear interrupt */
1577 aty_st_le32(CRTC_INT_CNTL, int_cntl | CRTC_VBLANK_INT_AK, par);
1578 /* enable interrupt */
1579 aty_st_le32(CRTC_INT_CNTL, int_cntl | CRTC_VBLANK_INT_EN, par);
1580 spin_unlock_irq(&par->int_lock);
1581 } else if (reenable) {
1582 spin_lock_irq(&par->int_lock);
1583 int_cntl = aty_ld_le32(CRTC_INT_CNTL, par) & CRTC_INT_EN_MASK;
1584 if (!(int_cntl & CRTC_VBLANK_INT_EN)) {
1585 printk("atyfb: someone disabled IRQ [%08x]\n", int_cntl);
1586 /* re-enable interrupt */
1587 aty_st_le32(CRTC_INT_CNTL, int_cntl | CRTC_VBLANK_INT_EN, par );
1588 }
1589 spin_unlock_irq(&par->int_lock);
1590 }
1591
1592 return 0;
1593 }
1594
1595 static int aty_disable_irq(struct atyfb_par *par)
1596 {
1597 u32 int_cntl;
1598
1599 if (test_and_clear_bit(0, &par->irq_flags)) {
1600 if (par->vblank.pan_display) {
1601 par->vblank.pan_display = 0;
1602 aty_st_le32(CRTC_OFF_PITCH, par->crtc.off_pitch, par);
1603 }
1604 spin_lock_irq(&par->int_lock);
1605 int_cntl = aty_ld_le32(CRTC_INT_CNTL, par) & CRTC_INT_EN_MASK;
1606 /* disable interrupt */
1607 aty_st_le32(CRTC_INT_CNTL, int_cntl & ~CRTC_VBLANK_INT_EN, par );
1608 spin_unlock_irq(&par->int_lock);
1609 free_irq(par->irq, par);
1610 }
1611
1612 return 0;
1613 }
1614
1615 static int atyfb_release(struct fb_info *info, int user)
1616 {
1617 struct atyfb_par *par = (struct atyfb_par *) info->par;
1618 if (user) {
1619 par->open--;
1620 mdelay(1);
1621 wait_for_idle(par);
1622 if (!par->open) {
1623 #ifdef __sparc__
1624 int was_mmaped = par->mmaped;
1625
1626 par->mmaped = 0;
1627
1628 if (was_mmaped) {
1629 struct fb_var_screeninfo var;
1630
1631 /* Now reset the default display config, we have no
1632 * idea what the program(s) which mmap'd the chip did
1633 * to the configuration, nor whether it restored it
1634 * correctly.
1635 */
1636 var = default_var;
1637 if (noaccel)
1638 var.accel_flags &= ~FB_ACCELF_TEXT;
1639 else
1640 var.accel_flags |= FB_ACCELF_TEXT;
1641 if (var.yres == var.yres_virtual) {
1642 u32 videoram = (info->fix.smem_len - (PAGE_SIZE << 2));
1643 var.yres_virtual = ((videoram * 8) / var.bits_per_pixel) / var.xres_virtual;
1644 if (var.yres_virtual < var.yres)
1645 var.yres_virtual = var.yres;
1646 }
1647 }
1648 #endif
1649 aty_disable_irq(par);
1650 }
1651 }
1652 return (0);
1653 }
1654
1655 /*
1656 * Pan or Wrap the Display
1657 *
1658 * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
1659 */
1660
1661 static int atyfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
1662 {
1663 struct atyfb_par *par = (struct atyfb_par *) info->par;
1664 u32 xres, yres, xoffset, yoffset;
1665
1666 xres = (((par->crtc.h_tot_disp >> 16) & 0xff) + 1) * 8;
1667 yres = ((par->crtc.v_tot_disp >> 16) & 0x7ff) + 1;
1668 if (par->crtc.gen_cntl & CRTC_DBL_SCAN_EN)
1669 yres >>= 1;
1670 xoffset = (var->xoffset + 7) & ~7;
1671 yoffset = var->yoffset;
1672 if (xoffset + xres > par->crtc.vxres || yoffset + yres > par->crtc.vyres)
1673 return -EINVAL;
1674 info->var.xoffset = xoffset;
1675 info->var.yoffset = yoffset;
1676 if (par->asleep)
1677 return 0;
1678
1679 set_off_pitch(par, info);
1680 if ((var->activate & FB_ACTIVATE_VBL) && !aty_enable_irq(par, 0)) {
1681 par->vblank.pan_display = 1;
1682 } else {
1683 par->vblank.pan_display = 0;
1684 aty_st_le32(CRTC_OFF_PITCH, par->crtc.off_pitch, par);
1685 }
1686
1687 return 0;
1688 }
1689
1690 static int aty_waitforvblank(struct atyfb_par *par, u32 crtc)
1691 {
1692 struct aty_interrupt *vbl;
1693 unsigned int count;
1694 int ret;
1695
1696 switch (crtc) {
1697 case 0:
1698 vbl = &par->vblank;
1699 break;
1700 default:
1701 return -ENODEV;
1702 }
1703
1704 ret = aty_enable_irq(par, 0);
1705 if (ret)
1706 return ret;
1707
1708 count = vbl->count;
1709 ret = wait_event_interruptible_timeout(vbl->wait, count != vbl->count, HZ/10);
1710 if (ret < 0) {
1711 return ret;
1712 }
1713 if (ret == 0) {
1714 aty_enable_irq(par, 1);
1715 return -ETIMEDOUT;
1716 }
1717
1718 return 0;
1719 }
1720
1721
1722 #ifdef DEBUG
1723 #define ATYIO_CLKR 0x41545900 /* ATY\00 */
1724 #define ATYIO_CLKW 0x41545901 /* ATY\01 */
1725
1726 struct atyclk {
1727 u32 ref_clk_per;
1728 u8 pll_ref_div;
1729 u8 mclk_fb_div;
1730 u8 mclk_post_div; /* 1,2,3,4,8 */
1731 u8 mclk_fb_mult; /* 2 or 4 */
1732 u8 xclk_post_div; /* 1,2,3,4,8 */
1733 u8 vclk_fb_div;
1734 u8 vclk_post_div; /* 1,2,3,4,6,8,12 */
1735 u32 dsp_xclks_per_row; /* 0-16383 */
1736 u32 dsp_loop_latency; /* 0-15 */
1737 u32 dsp_precision; /* 0-7 */
1738 u32 dsp_on; /* 0-2047 */
1739 u32 dsp_off; /* 0-2047 */
1740 };
1741
1742 #define ATYIO_FEATR 0x41545902 /* ATY\02 */
1743 #define ATYIO_FEATW 0x41545903 /* ATY\03 */
1744 #endif
1745
1746 #ifndef FBIO_WAITFORVSYNC
1747 #define FBIO_WAITFORVSYNC _IOW('F', 0x20, __u32)
1748 #endif
1749
1750 static int atyfb_ioctl(struct fb_info *info, u_int cmd, u_long arg)
1751 {
1752 struct atyfb_par *par = (struct atyfb_par *) info->par;
1753 #ifdef __sparc__
1754 struct fbtype fbtyp;
1755 #endif
1756
1757 switch (cmd) {
1758 #ifdef __sparc__
1759 case FBIOGTYPE:
1760 fbtyp.fb_type = FBTYPE_PCI_GENERIC;
1761 fbtyp.fb_width = par->crtc.vxres;
1762 fbtyp.fb_height = par->crtc.vyres;
1763 fbtyp.fb_depth = info->var.bits_per_pixel;
1764 fbtyp.fb_cmsize = info->cmap.len;
1765 fbtyp.fb_size = info->fix.smem_len;
1766 if (copy_to_user((struct fbtype __user *) arg, &fbtyp, sizeof(fbtyp)))
1767 return -EFAULT;
1768 break;
1769 #endif /* __sparc__ */
1770
1771 case FBIO_WAITFORVSYNC:
1772 {
1773 u32 crtc;
1774
1775 if (get_user(crtc, (__u32 __user *) arg))
1776 return -EFAULT;
1777
1778 return aty_waitforvblank(par, crtc);
1779 }
1780 break;
1781
1782 #if defined(DEBUG) && defined(CONFIG_FB_ATY_CT)
1783 case ATYIO_CLKR:
1784 if (M64_HAS(INTEGRATED)) {
1785 struct atyclk clk;
1786 union aty_pll *pll = &(par->pll);
1787 u32 dsp_config = pll->ct.dsp_config;
1788 u32 dsp_on_off = pll->ct.dsp_on_off;
1789 clk.ref_clk_per = par->ref_clk_per;
1790 clk.pll_ref_div = pll->ct.pll_ref_div;
1791 clk.mclk_fb_div = pll->ct.mclk_fb_div;
1792 clk.mclk_post_div = pll->ct.mclk_post_div_real;
1793 clk.mclk_fb_mult = pll->ct.mclk_fb_mult;
1794 clk.xclk_post_div = pll->ct.xclk_post_div_real;
1795 clk.vclk_fb_div = pll->ct.vclk_fb_div;
1796 clk.vclk_post_div = pll->ct.vclk_post_div_real;
1797 clk.dsp_xclks_per_row = dsp_config & 0x3fff;
1798 clk.dsp_loop_latency = (dsp_config >> 16) & 0xf;
1799 clk.dsp_precision = (dsp_config >> 20) & 7;
1800 clk.dsp_off = dsp_on_off & 0x7ff;
1801 clk.dsp_on = (dsp_on_off >> 16) & 0x7ff;
1802 if (copy_to_user((struct atyclk __user *) arg, &clk,
1803 sizeof(clk)))
1804 return -EFAULT;
1805 } else
1806 return -EINVAL;
1807 break;
1808 case ATYIO_CLKW:
1809 if (M64_HAS(INTEGRATED)) {
1810 struct atyclk clk;
1811 union aty_pll *pll = &(par->pll);
1812 if (copy_from_user(&clk, (struct atyclk __user *) arg, sizeof(clk)))
1813 return -EFAULT;
1814 par->ref_clk_per = clk.ref_clk_per;
1815 pll->ct.pll_ref_div = clk.pll_ref_div;
1816 pll->ct.mclk_fb_div = clk.mclk_fb_div;
1817 pll->ct.mclk_post_div_real = clk.mclk_post_div;
1818 pll->ct.mclk_fb_mult = clk.mclk_fb_mult;
1819 pll->ct.xclk_post_div_real = clk.xclk_post_div;
1820 pll->ct.vclk_fb_div = clk.vclk_fb_div;
1821 pll->ct.vclk_post_div_real = clk.vclk_post_div;
1822 pll->ct.dsp_config = (clk.dsp_xclks_per_row & 0x3fff) |
1823 ((clk.dsp_loop_latency & 0xf)<<16)| ((clk.dsp_precision & 7)<<20);
1824 pll->ct.dsp_on_off = (clk.dsp_off & 0x7ff) | ((clk.dsp_on & 0x7ff)<<16);
1825 /*aty_calc_pll_ct(info, &pll->ct);*/
1826 aty_set_pll_ct(info, pll);
1827 } else
1828 return -EINVAL;
1829 break;
1830 case ATYIO_FEATR:
1831 if (get_user(par->features, (u32 __user *) arg))
1832 return -EFAULT;
1833 break;
1834 case ATYIO_FEATW:
1835 if (put_user(par->features, (u32 __user *) arg))
1836 return -EFAULT;
1837 break;
1838 #endif /* DEBUG && CONFIG_FB_ATY_CT */
1839 default:
1840 return -EINVAL;
1841 }
1842 return 0;
1843 }
1844
1845 static int atyfb_sync(struct fb_info *info)
1846 {
1847 struct atyfb_par *par = (struct atyfb_par *) info->par;
1848
1849 if (par->blitter_may_be_busy)
1850 wait_for_idle(par);
1851 return 0;
1852 }
1853
1854 #ifdef __sparc__
1855 static int atyfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
1856 {
1857 struct atyfb_par *par = (struct atyfb_par *) info->par;
1858 unsigned int size, page, map_size = 0;
1859 unsigned long map_offset = 0;
1860 unsigned long off;
1861 int i;
1862
1863 if (!par->mmap_map)
1864 return -ENXIO;
1865
1866 if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
1867 return -EINVAL;
1868
1869 off = vma->vm_pgoff << PAGE_SHIFT;
1870 size = vma->vm_end - vma->vm_start;
1871
1872 /* To stop the swapper from even considering these pages. */
1873 vma->vm_flags |= (VM_IO | VM_RESERVED);
1874
1875 if (((vma->vm_pgoff == 0) && (size == info->fix.smem_len)) ||
1876 ((off == info->fix.smem_len) && (size == PAGE_SIZE)))
1877 off += 0x8000000000000000UL;
1878
1879 vma->vm_pgoff = off >> PAGE_SHIFT; /* propagate off changes */
1880
1881 /* Each page, see which map applies */
1882 for (page = 0; page < size;) {
1883 map_size = 0;
1884 for (i = 0; par->mmap_map[i].size; i++) {
1885 unsigned long start = par->mmap_map[i].voff;
1886 unsigned long end = start + par->mmap_map[i].size;
1887 unsigned long offset = off + page;
1888
1889 if (start > offset)
1890 continue;
1891 if (offset >= end)
1892 continue;
1893
1894 map_size = par->mmap_map[i].size - (offset - start);
1895 map_offset =
1896 par->mmap_map[i].poff + (offset - start);
1897 break;
1898 }
1899 if (!map_size) {
1900 page += PAGE_SIZE;
1901 continue;
1902 }
1903 if (page + map_size > size)
1904 map_size = size - page;
1905
1906 pgprot_val(vma->vm_page_prot) &=
1907 ~(par->mmap_map[i].prot_mask);
1908 pgprot_val(vma->vm_page_prot) |= par->mmap_map[i].prot_flag;
1909
1910 if (remap_pfn_range(vma, vma->vm_start + page,
1911 map_offset >> PAGE_SHIFT, map_size, vma->vm_page_prot))
1912 return -EAGAIN;
1913
1914 page += map_size;
1915 }
1916
1917 if (!map_size)
1918 return -EINVAL;
1919
1920 if (!par->mmaped)
1921 par->mmaped = 1;
1922 return 0;
1923 }
1924
1925 static struct {
1926 u32 yoffset;
1927 u8 r[2][256];
1928 u8 g[2][256];
1929 u8 b[2][256];
1930 } atyfb_save;
1931
1932 static void atyfb_save_palette(struct atyfb_par *par, int enter)
1933 {
1934 int i, tmp;
1935
1936 for (i = 0; i < 256; i++) {
1937 tmp = aty_ld_8(DAC_CNTL, par) & 0xfc;
1938 if (M64_HAS(EXTRA_BRIGHT))
1939 tmp |= 0x2;
1940 aty_st_8(DAC_CNTL, tmp, par);
1941 aty_st_8(DAC_MASK, 0xff, par);
1942
1943 writeb(i, &par->aty_cmap_regs->rindex);
1944 atyfb_save.r[enter][i] = readb(&par->aty_cmap_regs->lut);
1945 atyfb_save.g[enter][i] = readb(&par->aty_cmap_regs->lut);
1946 atyfb_save.b[enter][i] = readb(&par->aty_cmap_regs->lut);
1947 writeb(i, &par->aty_cmap_regs->windex);
1948 writeb(atyfb_save.r[1 - enter][i],
1949 &par->aty_cmap_regs->lut);
1950 writeb(atyfb_save.g[1 - enter][i],
1951 &par->aty_cmap_regs->lut);
1952 writeb(atyfb_save.b[1 - enter][i],
1953 &par->aty_cmap_regs->lut);
1954 }
1955 }
1956
1957 static void atyfb_palette(int enter)
1958 {
1959 struct atyfb_par *par;
1960 struct fb_info *info;
1961 int i;
1962
1963 for (i = 0; i < FB_MAX; i++) {
1964 info = registered_fb[i];
1965 if (info && info->fbops == &atyfb_ops) {
1966 par = (struct atyfb_par *) info->par;
1967
1968 atyfb_save_palette(par, enter);
1969 if (enter) {
1970 atyfb_save.yoffset = info->var.yoffset;
1971 info->var.yoffset = 0;
1972 set_off_pitch(par, info);
1973 } else {
1974 info->var.yoffset = atyfb_save.yoffset;
1975 set_off_pitch(par, info);
1976 }
1977 aty_st_le32(CRTC_OFF_PITCH, par->crtc.off_pitch, par);
1978 break;
1979 }
1980 }
1981 }
1982 #endif /* __sparc__ */
1983
1984
1985
1986 #if defined(CONFIG_PM) && defined(CONFIG_PCI)
1987
1988 /* Power management routines. Those are used for PowerBook sleep.
1989 */
1990 static int aty_power_mgmt(int sleep, struct atyfb_par *par)
1991 {
1992 u32 pm;
1993 int timeout;
1994
1995 pm = aty_ld_lcd(POWER_MANAGEMENT, par);
1996 pm = (pm & ~PWR_MGT_MODE_MASK) | PWR_MGT_MODE_REG;
1997 aty_st_lcd(POWER_MANAGEMENT, pm, par);
1998 pm = aty_ld_lcd(POWER_MANAGEMENT, par);
1999
2000 timeout = 2000;
2001 if (sleep) {
2002 /* Sleep */
2003 pm &= ~PWR_MGT_ON;
2004 aty_st_lcd(POWER_MANAGEMENT, pm, par);
2005 pm = aty_ld_lcd(POWER_MANAGEMENT, par);
2006 udelay(10);
2007 pm &= ~(PWR_BLON | AUTO_PWR_UP);
2008 pm |= SUSPEND_NOW;
2009 aty_st_lcd(POWER_MANAGEMENT, pm, par);
2010 pm = aty_ld_lcd(POWER_MANAGEMENT, par);
2011 udelay(10);
2012 pm |= PWR_MGT_ON;
2013 aty_st_lcd(POWER_MANAGEMENT, pm, par);
2014 do {
2015 pm = aty_ld_lcd(POWER_MANAGEMENT, par);
2016 mdelay(1);
2017 if ((--timeout) == 0)
2018 break;
2019 } while ((pm & PWR_MGT_STATUS_MASK) != PWR_MGT_STATUS_SUSPEND);
2020 } else {
2021 /* Wakeup */
2022 pm &= ~PWR_MGT_ON;
2023 aty_st_lcd(POWER_MANAGEMENT, pm, par);
2024 pm = aty_ld_lcd(POWER_MANAGEMENT, par);
2025 udelay(10);
2026 pm &= ~SUSPEND_NOW;
2027 pm |= (PWR_BLON | AUTO_PWR_UP);
2028 aty_st_lcd(POWER_MANAGEMENT, pm, par);
2029 pm = aty_ld_lcd(POWER_MANAGEMENT, par);
2030 udelay(10);
2031 pm |= PWR_MGT_ON;
2032 aty_st_lcd(POWER_MANAGEMENT, pm, par);
2033 do {
2034 pm = aty_ld_lcd(POWER_MANAGEMENT, par);
2035 mdelay(1);
2036 if ((--timeout) == 0)
2037 break;
2038 } while ((pm & PWR_MGT_STATUS_MASK) != 0);
2039 }
2040 mdelay(500);
2041
2042 return timeout ? 0 : -EIO;
2043 }
2044
2045 static int atyfb_pci_suspend(struct pci_dev *pdev, pm_message_t state)
2046 {
2047 struct fb_info *info = pci_get_drvdata(pdev);
2048 struct atyfb_par *par = (struct atyfb_par *) info->par;
2049
2050 #ifndef CONFIG_PPC_PMAC
2051 /* HACK ALERT ! Once I find a proper way to say to each driver
2052 * individually what will happen with it's PCI slot, I'll change
2053 * that. On laptops, the AGP slot is just unclocked, so D2 is
2054 * expected, while on desktops, the card is powered off
2055 */
2056 return 0;
2057 #endif /* CONFIG_PPC_PMAC */
2058
2059 if (state.event == pdev->dev.power.power_state.event)
2060 return 0;
2061
2062 acquire_console_sem();
2063
2064 fb_set_suspend(info, 1);
2065
2066 /* Idle & reset engine */
2067 wait_for_idle(par);
2068 aty_reset_engine(par);
2069
2070 /* Blank display and LCD */
2071 atyfb_blank(FB_BLANK_POWERDOWN, info);
2072
2073 par->asleep = 1;
2074 par->lock_blank = 1;
2075
2076 /* Set chip to "suspend" mode */
2077 if (aty_power_mgmt(1, par)) {
2078 par->asleep = 0;
2079 par->lock_blank = 0;
2080 atyfb_blank(FB_BLANK_UNBLANK, info);
2081 fb_set_suspend(info, 0);
2082 release_console_sem();
2083 return -EIO;
2084 }
2085
2086 release_console_sem();
2087
2088 pdev->dev.power.power_state = state;
2089
2090 return 0;
2091 }
2092
2093 static int atyfb_pci_resume(struct pci_dev *pdev)
2094 {
2095 struct fb_info *info = pci_get_drvdata(pdev);
2096 struct atyfb_par *par = (struct atyfb_par *) info->par;
2097
2098 if (pdev->dev.power.power_state.event == PM_EVENT_ON)
2099 return 0;
2100
2101 acquire_console_sem();
2102
2103 if (pdev->dev.power.power_state.event == 2)
2104 aty_power_mgmt(0, par);
2105 par->asleep = 0;
2106
2107 /* Restore display */
2108 atyfb_set_par(info);
2109
2110 /* Refresh */
2111 fb_set_suspend(info, 0);
2112
2113 /* Unblank */
2114 par->lock_blank = 0;
2115 atyfb_blank(FB_BLANK_UNBLANK, info);
2116
2117 release_console_sem();
2118
2119 pdev->dev.power.power_state = PMSG_ON;
2120
2121 return 0;
2122 }
2123
2124 #endif /* defined(CONFIG_PM) && defined(CONFIG_PCI) */
2125
2126 /* Backlight */
2127 #ifdef CONFIG_FB_ATY_BACKLIGHT
2128 #define MAX_LEVEL 0xFF
2129
2130 static struct backlight_properties aty_bl_data;
2131
2132 /* Call with fb_info->bl_mutex held */
2133 static int aty_bl_get_level_brightness(struct atyfb_par *par, int level)
2134 {
2135 struct fb_info *info = pci_get_drvdata(par->pdev);
2136 int atylevel;
2137
2138 /* Get and convert the value */
2139 atylevel = info->bl_curve[level] * FB_BACKLIGHT_MAX / MAX_LEVEL;
2140
2141 if (atylevel < 0)
2142 atylevel = 0;
2143 else if (atylevel > MAX_LEVEL)
2144 atylevel = MAX_LEVEL;
2145
2146 return atylevel;
2147 }
2148
2149 /* Call with fb_info->bl_mutex held */
2150 static int __aty_bl_update_status(struct backlight_device *bd)
2151 {
2152 struct atyfb_par *par = class_get_devdata(&bd->class_dev);
2153 unsigned int reg = aty_ld_lcd(LCD_MISC_CNTL, par);
2154 int level;
2155
2156 if (bd->props->power != FB_BLANK_UNBLANK ||
2157 bd->props->fb_blank != FB_BLANK_UNBLANK)
2158 level = 0;
2159 else
2160 level = bd->props->brightness;
2161
2162 reg |= (BLMOD_EN | BIASMOD_EN);
2163 if (level > 0) {
2164 reg &= ~BIAS_MOD_LEVEL_MASK;
2165 reg |= (aty_bl_get_level_brightness(par, level) << BIAS_MOD_LEVEL_SHIFT);
2166 } else {
2167 reg &= ~BIAS_MOD_LEVEL_MASK;
2168 reg |= (aty_bl_get_level_brightness(par, 0) << BIAS_MOD_LEVEL_SHIFT);
2169 }
2170 aty_st_lcd(LCD_MISC_CNTL, reg, par);
2171
2172 return 0;
2173 }
2174
2175 static int aty_bl_update_status(struct backlight_device *bd)
2176 {
2177 struct atyfb_par *par = class_get_devdata(&bd->class_dev);
2178 struct fb_info *info = pci_get_drvdata(par->pdev);
2179 int ret;
2180
2181 mutex_lock(&info->bl_mutex);
2182 ret = __aty_bl_update_status(bd);
2183 mutex_unlock(&info->bl_mutex);
2184
2185 return ret;
2186 }
2187
2188 static int aty_bl_get_brightness(struct backlight_device *bd)
2189 {
2190 return bd->props->brightness;
2191 }
2192
2193 static struct backlight_properties aty_bl_data = {
2194 .owner = THIS_MODULE,
2195 .get_brightness = aty_bl_get_brightness,
2196 .update_status = aty_bl_update_status,
2197 .max_brightness = (FB_BACKLIGHT_LEVELS - 1),
2198 };
2199
2200 static void aty_bl_set_power(struct fb_info *info, int power)
2201 {
2202 mutex_lock(&info->bl_mutex);
2203 up(&info->bl_dev->sem);
2204 info->bl_dev->props->power = power;
2205 __aty_bl_update_status(info->bl_dev);
2206 down(&info->bl_dev->sem);
2207 mutex_unlock(&info->bl_mutex);
2208 }
2209
2210 static void aty_bl_init(struct atyfb_par *par)
2211 {
2212 struct fb_info *info = pci_get_drvdata(par->pdev);
2213 struct backlight_device *bd;
2214 char name[12];
2215
2216 #ifdef CONFIG_PMAC_BACKLIGHT
2217 if (!pmac_has_backlight_type("ati"))
2218 return;
2219 #endif
2220
2221 snprintf(name, sizeof(name), "atybl%d", info->node);
2222
2223 bd = backlight_device_register(name, par, &aty_bl_data);
2224 if (IS_ERR(bd)) {
2225 info->bl_dev = NULL;
2226 printk("aty: Backlight registration failed\n");
2227 goto error;
2228 }
2229
2230 mutex_lock(&info->bl_mutex);
2231 info->bl_dev = bd;
2232 fb_bl_default_curve(info, 0,
2233 0x3F * FB_BACKLIGHT_MAX / MAX_LEVEL,
2234 0xFF * FB_BACKLIGHT_MAX / MAX_LEVEL);
2235 mutex_unlock(&info->bl_mutex);
2236
2237 up(&bd->sem);
2238 bd->props->brightness = aty_bl_data.max_brightness;
2239 bd->props->power = FB_BLANK_UNBLANK;
2240 bd->props->update_status(bd);
2241 down(&bd->sem);
2242
2243 #ifdef CONFIG_PMAC_BACKLIGHT
2244 mutex_lock(&pmac_backlight_mutex);
2245 if (!pmac_backlight)
2246 pmac_backlight = bd;
2247 mutex_unlock(&pmac_backlight_mutex);
2248 #endif
2249
2250 printk("aty: Backlight initialized (%s)\n", name);
2251
2252 return;
2253
2254 error:
2255 return;
2256 }
2257
2258 static void aty_bl_exit(struct atyfb_par *par)
2259 {
2260 struct fb_info *info = pci_get_drvdata(par->pdev);
2261
2262 #ifdef CONFIG_PMAC_BACKLIGHT
2263 mutex_lock(&pmac_backlight_mutex);
2264 #endif
2265
2266 mutex_lock(&info->bl_mutex);
2267 if (info->bl_dev) {
2268 #ifdef CONFIG_PMAC_BACKLIGHT
2269 if (pmac_backlight == info->bl_dev)
2270 pmac_backlight = NULL;
2271 #endif
2272
2273 backlight_device_unregister(info->bl_dev);
2274
2275 printk("aty: Backlight unloaded\n");
2276 }
2277 mutex_unlock(&info->bl_mutex);
2278
2279 #ifdef CONFIG_PMAC_BACKLIGHT
2280 mutex_unlock(&pmac_backlight_mutex);
2281 #endif
2282 }
2283
2284 #endif /* CONFIG_FB_ATY_BACKLIGHT */
2285
2286 static void __devinit aty_calc_mem_refresh(struct atyfb_par *par, int xclk)
2287 {
2288 const int ragepro_tbl[] = {
2289 44, 50, 55, 66, 75, 80, 100
2290 };
2291 const int ragexl_tbl[] = {
2292 50, 66, 75, 83, 90, 95, 100, 105,
2293 110, 115, 120, 125, 133, 143, 166
2294 };
2295 const int *refresh_tbl;
2296 int i, size;
2297
2298 if (IS_XL(par->pci_id) || IS_MOBILITY(par->pci_id)) {
2299 refresh_tbl = ragexl_tbl;
2300 size = ARRAY_SIZE(ragexl_tbl);
2301 } else {
2302 refresh_tbl = ragepro_tbl;
2303 size = ARRAY_SIZE(ragepro_tbl);
2304 }
2305
2306 for (i=0; i < size; i++) {
2307 if (xclk < refresh_tbl[i])
2308 break;
2309 }
2310 par->mem_refresh_rate = i;
2311 }
2312
2313 /*
2314 * Initialisation
2315 */
2316
2317 static struct fb_info *fb_list = NULL;
2318
2319 #if defined(__i386__) && defined(CONFIG_FB_ATY_GENERIC_LCD)
2320 static int __devinit atyfb_get_timings_from_lcd(struct atyfb_par *par,
2321 struct fb_var_screeninfo *var)
2322 {
2323 int ret = -EINVAL;
2324
2325 if (par->lcd_table != 0 && (aty_ld_lcd(LCD_GEN_CNTL, par) & LCD_ON)) {
2326 *var = default_var;
2327 var->xres = var->xres_virtual = par->lcd_hdisp;
2328 var->right_margin = par->lcd_right_margin;
2329 var->left_margin = par->lcd_hblank_len -
2330 (par->lcd_right_margin + par->lcd_hsync_dly +
2331 par->lcd_hsync_len);
2332 var->hsync_len = par->lcd_hsync_len + par->lcd_hsync_dly;
2333 var->yres = var->yres_virtual = par->lcd_vdisp;
2334 var->lower_margin = par->lcd_lower_margin;
2335 var->upper_margin = par->lcd_vblank_len -
2336 (par->lcd_lower_margin + par->lcd_vsync_len);
2337 var->vsync_len = par->lcd_vsync_len;
2338 var->pixclock = par->lcd_pixclock;
2339 ret = 0;
2340 }
2341
2342 return ret;
2343 }
2344 #endif /* defined(__i386__) && defined(CONFIG_FB_ATY_GENERIC_LCD) */
2345
2346 static int __devinit aty_init(struct fb_info *info, const char *name)
2347 {
2348 struct atyfb_par *par = (struct atyfb_par *) info->par;
2349 const char *ramname = NULL, *xtal;
2350 int gtb_memsize, has_var = 0;
2351 struct fb_var_screeninfo var;
2352 u8 pll_ref_div;
2353 u32 i;
2354 #if defined(CONFIG_PPC)
2355 int sense;
2356 #endif
2357
2358 init_waitqueue_head(&par->vblank.wait);
2359 spin_lock_init(&par->int_lock);
2360
2361 par->aty_cmap_regs =
2362 (struct aty_cmap_regs __iomem *) (par->ati_regbase + 0xc0);
2363
2364 #ifdef CONFIG_PPC_PMAC
2365 /* The Apple iBook1 uses non-standard memory frequencies. We detect it
2366 * and set the frequency manually. */
2367 if (machine_is_compatible("PowerBook2,1")) {
2368 par->pll_limits.mclk = 70;
2369 par->pll_limits.xclk = 53;
2370 }
2371 #endif
2372 if (pll)
2373 par->pll_limits.pll_max = pll;
2374 if (mclk)
2375 par->pll_limits.mclk = mclk;
2376 if (xclk)
2377 par->pll_limits.xclk = xclk;
2378
2379 aty_calc_mem_refresh(par, par->pll_limits.xclk);
2380 par->pll_per = 1000000/par->pll_limits.pll_max;
2381 par->mclk_per = 1000000/par->pll_limits.mclk;
2382 par->xclk_per = 1000000/par->pll_limits.xclk;
2383
2384 par->ref_clk_per = 1000000000000ULL / 14318180;
2385 xtal = "14.31818";
2386
2387 #ifdef CONFIG_FB_ATY_GX
2388 if (!M64_HAS(INTEGRATED)) {
2389 u32 stat0;
2390 u8 dac_type, dac_subtype, clk_type;
2391 stat0 = aty_ld_le32(CONFIG_STAT0, par);
2392 par->bus_type = (stat0 >> 0) & 0x07;
2393 par->ram_type = (stat0 >> 3) & 0x07;
2394 ramname = aty_gx_ram[par->ram_type];
2395 /* FIXME: clockchip/RAMDAC probing? */
2396 dac_type = (aty_ld_le32(DAC_CNTL, par) >> 16) & 0x07;
2397 #ifdef CONFIG_ATARI
2398 clk_type = CLK_ATI18818_1;
2399 dac_type = (stat0 >> 9) & 0x07;
2400 if (dac_type == 0x07)
2401 dac_subtype = DAC_ATT20C408;
2402 else
2403 dac_subtype = (aty_ld_8(SCRATCH_REG1 + 1, par) & 0xF0) | dac_type;
2404 #else
2405 dac_type = DAC_IBMRGB514;
2406 dac_subtype = DAC_IBMRGB514;
2407 clk_type = CLK_IBMRGB514;
2408 #endif
2409 switch (dac_subtype) {
2410 case DAC_IBMRGB514:
2411 par->dac_ops = &aty_dac_ibm514;
2412 break;
2413 case DAC_ATI68860_B:
2414 case DAC_ATI68860_C:
2415 par->dac_ops = &aty_dac_ati68860b;
2416 break;
2417 case DAC_ATT20C408:
2418 case DAC_ATT21C498:
2419 par->dac_ops = &aty_dac_att21c498;
2420 break;
2421 default:
2422 PRINTKI("aty_init: DAC type not implemented yet!\n");
2423 par->dac_ops = &aty_dac_unsupported;
2424 break;
2425 }
2426 switch (clk_type) {
2427 #ifdef CONFIG_ATARI
2428 case CLK_ATI18818_1:
2429 par->pll_ops = &aty_pll_ati18818_1;
2430 break;
2431 #else
2432 case CLK_IBMRGB514:
2433 par->pll_ops = &aty_pll_ibm514;
2434 break;
2435 #endif
2436 #if 0 /* dead code */
2437 case CLK_STG1703:
2438 par->pll_ops = &aty_pll_stg1703;
2439 break;
2440 case CLK_CH8398:
2441 par->pll_ops = &aty_pll_ch8398;
2442 break;
2443 case CLK_ATT20C408:
2444 par->pll_ops = &aty_pll_att20c408;
2445 break;
2446 #endif
2447 default:
2448 PRINTKI("aty_init: CLK type not implemented yet!");
2449 par->pll_ops = &aty_pll_unsupported;
2450 break;
2451 }
2452 }
2453 #endif /* CONFIG_FB_ATY_GX */
2454 #ifdef CONFIG_FB_ATY_CT
2455 if (M64_HAS(INTEGRATED)) {
2456 par->dac_ops = &aty_dac_ct;
2457 par->pll_ops = &aty_pll_ct;
2458 par->bus_type = PCI;
2459 par->ram_type = (aty_ld_le32(CONFIG_STAT0, par) & 0x07);
2460 ramname = aty_ct_ram[par->ram_type];
2461 /* for many chips, the mclk is 67 MHz for SDRAM, 63 MHz otherwise */
2462 if (par->pll_limits.mclk == 67 && par->ram_type < SDRAM)
2463 par->pll_limits.mclk = 63;
2464 }
2465
2466 if (M64_HAS(GTB_DSP)
2467 && (pll_ref_div = aty_ld_pll_ct(PLL_REF_DIV, par))) {
2468 int diff1, diff2;
2469 diff1 = 510 * 14 / pll_ref_div - par->pll_limits.pll_max;
2470 diff2 = 510 * 29 / pll_ref_div - par->pll_limits.pll_max;
2471 if (diff1 < 0)
2472 diff1 = -diff1;
2473 if (diff2 < 0)
2474 diff2 = -diff2;
2475 if (diff2 < diff1) {
2476 par->ref_clk_per = 1000000000000ULL / 29498928;
2477 xtal = "29.498928";
2478 }
2479 }
2480 #endif /* CONFIG_FB_ATY_CT */
2481
2482 /* save previous video mode */
2483 aty_get_crtc(par, &saved_crtc);
2484 if(par->pll_ops->get_pll)
2485 par->pll_ops->get_pll(info, &saved_pll);
2486
2487 i = aty_ld_le32(MEM_CNTL, par);
2488 gtb_memsize = M64_HAS(GTB_DSP);
2489 if (gtb_memsize)
2490 switch (i & 0xF) { /* 0xF used instead of MEM_SIZE_ALIAS */
2491 case MEM_SIZE_512K:
2492 info->fix.smem_len = 0x80000;
2493 break;
2494 case MEM_SIZE_1M:
2495 info->fix.smem_len = 0x100000;
2496 break;
2497 case MEM_SIZE_2M_GTB:
2498 info->fix.smem_len = 0x200000;
2499 break;
2500 case MEM_SIZE_4M_GTB:
2501 info->fix.smem_len = 0x400000;
2502 break;
2503 case MEM_SIZE_6M_GTB:
2504 info->fix.smem_len = 0x600000;
2505 break;
2506 case MEM_SIZE_8M_GTB:
2507 info->fix.smem_len = 0x800000;
2508 break;
2509 default:
2510 info->fix.smem_len = 0x80000;
2511 } else
2512 switch (i & MEM_SIZE_ALIAS) {
2513 case MEM_SIZE_512K:
2514 info->fix.smem_len = 0x80000;
2515 break;
2516 case MEM_SIZE_1M:
2517 info->fix.smem_len = 0x100000;
2518 break;
2519 case MEM_SIZE_2M:
2520 info->fix.smem_len = 0x200000;
2521 break;
2522 case MEM_SIZE_4M:
2523 info->fix.smem_len = 0x400000;
2524 break;
2525 case MEM_SIZE_6M:
2526 info->fix.smem_len = 0x600000;
2527 break;
2528 case MEM_SIZE_8M:
2529 info->fix.smem_len = 0x800000;
2530 break;
2531 default:
2532 info->fix.smem_len = 0x80000;
2533 }
2534
2535 if (M64_HAS(MAGIC_VRAM_SIZE)) {
2536 if (aty_ld_le32(CONFIG_STAT1, par) & 0x40000000)
2537 info->fix.smem_len += 0x400000;
2538 }
2539
2540 if (vram) {
2541 info->fix.smem_len = vram * 1024;
2542 i = i & ~(gtb_memsize ? 0xF : MEM_SIZE_ALIAS);
2543 if (info->fix.smem_len <= 0x80000)
2544 i |= MEM_SIZE_512K;
2545 else if (info->fix.smem_len <= 0x100000)
2546 i |= MEM_SIZE_1M;
2547 else if (info->fix.smem_len <= 0x200000)
2548 i |= gtb_memsize ? MEM_SIZE_2M_GTB : MEM_SIZE_2M;
2549 else if (info->fix.smem_len <= 0x400000)
2550 i |= gtb_memsize ? MEM_SIZE_4M_GTB : MEM_SIZE_4M;
2551 else if (info->fix.smem_len <= 0x600000)
2552 i |= gtb_memsize ? MEM_SIZE_6M_GTB : MEM_SIZE_6M;
2553 else
2554 i |= gtb_memsize ? MEM_SIZE_8M_GTB : MEM_SIZE_8M;
2555 aty_st_le32(MEM_CNTL, i, par);
2556 }
2557
2558 /*
2559 * Reg Block 0 (CT-compatible block) is at mmio_start
2560 * Reg Block 1 (multimedia extensions) is at mmio_start - 0x400
2561 */
2562 if (M64_HAS(GX)) {
2563 info->fix.mmio_len = 0x400;
2564 info->fix.accel = FB_ACCEL_ATI_MACH64GX;
2565 } else if (M64_HAS(CT)) {
2566 info->fix.mmio_len = 0x400;
2567 info->fix.accel = FB_ACCEL_ATI_MACH64CT;
2568 } else if (M64_HAS(VT)) {
2569 info->fix.mmio_start -= 0x400;
2570 info->fix.mmio_len = 0x800;
2571 info->fix.accel = FB_ACCEL_ATI_MACH64VT;
2572 } else {/* GT */
2573 info->fix.mmio_start -= 0x400;
2574 info->fix.mmio_len = 0x800;
2575 info->fix.accel = FB_ACCEL_ATI_MACH64GT;
2576 }
2577
2578 PRINTKI("%d%c %s, %s MHz XTAL, %d MHz PLL, %d Mhz MCLK, %d MHz XCLK\n",
2579 info->fix.smem_len == 0x80000 ? 512 : (info->fix.smem_len >> 20),
2580 info->fix.smem_len == 0x80000 ? 'K' : 'M', ramname, xtal, par->pll_limits.pll_max,
2581 par->pll_limits.mclk, par->pll_limits.xclk);
2582
2583 #if defined(DEBUG) && defined(CONFIG_ATY_CT)
2584 if (M64_HAS(INTEGRATED)) {
2585 int i;
2586 printk("debug atyfb: BUS_CNTL DAC_CNTL MEM_CNTL EXT_MEM_CNTL CRTC_GEN_CNTL "
2587 "DSP_CONFIG DSP_ON_OFF CLOCK_CNTL\n"
2588 "debug atyfb: %08x %08x %08x %08x %08x %08x %08x %08x\n"
2589 "debug atyfb: PLL",
2590 aty_ld_le32(BUS_CNTL, par), aty_ld_le32(DAC_CNTL, par),
2591 aty_ld_le32(MEM_CNTL, par), aty_ld_le32(EXT_MEM_CNTL, par),
2592 aty_ld_le32(CRTC_GEN_CNTL, par), aty_ld_le32(DSP_CONFIG, par),
2593 aty_ld_le32(DSP_ON_OFF, par), aty_ld_le32(CLOCK_CNTL, par));
2594 for (i = 0; i < 40; i++)
2595 printk(" %02x", aty_ld_pll_ct(i, par));
2596 printk("\n");
2597 }
2598 #endif
2599 if(par->pll_ops->init_pll)
2600 par->pll_ops->init_pll(info, &par->pll);
2601
2602 /*
2603 * Last page of 8 MB (4 MB on ISA) aperture is MMIO
2604 * FIXME: we should use the auxiliary aperture instead so we can access
2605 * the full 8 MB of video RAM on 8 MB boards
2606 */
2607
2608 if (!par->aux_start &&
2609 (info->fix.smem_len == 0x800000 || (par->bus_type == ISA && info->fix.smem_len == 0x400000)))
2610 info->fix.smem_len -= GUI_RESERVE;
2611
2612 /*
2613 * Disable register access through the linear aperture
2614 * if the auxiliary aperture is used so we can access
2615 * the full 8 MB of video RAM on 8 MB boards.
2616 */
2617 if (par->aux_start)
2618 aty_st_le32(BUS_CNTL, aty_ld_le32(BUS_CNTL, par) | BUS_APER_REG_DIS, par);
2619
2620 #ifdef CONFIG_MTRR
2621 par->mtrr_aper = -1;
2622 par->mtrr_reg = -1;
2623 if (!nomtrr) {
2624 /* Cover the whole resource. */
2625 par->mtrr_aper = mtrr_add(par->res_start, par->res_size, MTRR_TYPE_WRCOMB, 1);
2626 if (par->mtrr_aper >= 0 && !par->aux_start) {
2627 /* Make a hole for mmio. */
2628 par->mtrr_reg = mtrr_add(par->res_start + 0x800000 - GUI_RESERVE,
2629 GUI_RESERVE, MTRR_TYPE_UNCACHABLE, 1);
2630 if (par->mtrr_reg < 0) {
2631 mtrr_del(par->mtrr_aper, 0, 0);
2632 par->mtrr_aper = -1;
2633 }
2634 }
2635 }
2636 #endif
2637
2638 info->fbops = &atyfb_ops;
2639 info->pseudo_palette = pseudo_palette;
2640 info->flags = FBINFO_DEFAULT |
2641 FBINFO_HWACCEL_IMAGEBLIT |
2642 FBINFO_HWACCEL_FILLRECT |
2643 FBINFO_HWACCEL_COPYAREA |
2644 FBINFO_HWACCEL_YPAN;
2645
2646 #ifdef CONFIG_PMAC_BACKLIGHT
2647 if (M64_HAS(G3_PB_1_1) && machine_is_compatible("PowerBook1,1")) {
2648 /* these bits let the 101 powerbook wake up from sleep -- paulus */
2649 aty_st_lcd(POWER_MANAGEMENT, aty_ld_lcd(POWER_MANAGEMENT, par)
2650 | (USE_F32KHZ | TRISTATE_MEM_EN), par);
2651 } else
2652 #endif
2653 if (M64_HAS(MOBIL_BUS)) {
2654 #ifdef CONFIG_FB_ATY_BACKLIGHT
2655 aty_bl_init (par);
2656 #endif
2657 }
2658
2659 memset(&var, 0, sizeof(var));
2660 #ifdef CONFIG_PPC
2661 if (machine_is(powermac)) {
2662 /*
2663 * FIXME: The NVRAM stuff should be put in a Mac-specific file, as it
2664 * applies to all Mac video cards
2665 */
2666 if (mode) {
2667 if (mac_find_mode(&var, info, mode, 8))
2668 has_var = 1;
2669 } else {
2670 if (default_vmode == VMODE_CHOOSE) {
2671 if (M64_HAS(G3_PB_1024x768))
2672 /* G3 PowerBook with 1024x768 LCD */
2673 default_vmode = VMODE_1024_768_60;
2674 else if (machine_is_compatible("iMac"))
2675 default_vmode = VMODE_1024_768_75;
2676 else if (machine_is_compatible
2677 ("PowerBook2,1"))
2678 /* iBook with 800x600 LCD */
2679 default_vmode = VMODE_800_600_60;
2680 else
2681 default_vmode = VMODE_640_480_67;
2682 sense = read_aty_sense(par);
2683 PRINTKI("monitor sense=%x, mode %d\n",
2684 sense, mac_map_monitor_sense(sense));
2685 }
2686 if (default_vmode <= 0 || default_vmode > VMODE_MAX)
2687 default_vmode = VMODE_640_480_60;
2688 if (default_cmode < CMODE_8 || default_cmode > CMODE_32)
2689 default_cmode = CMODE_8;
2690 if (!mac_vmode_to_var(default_vmode, default_cmode,
2691 &var))
2692 has_var = 1;
2693 }
2694 }
2695
2696 #endif /* !CONFIG_PPC */
2697
2698 #if defined(__i386__) && defined(CONFIG_FB_ATY_GENERIC_LCD)
2699 if (!atyfb_get_timings_from_lcd(par, &var))
2700 has_var = 1;
2701 #endif
2702
2703 if (mode && fb_find_mode(&var, info, mode, NULL, 0, &defmode, 8))
2704 has_var = 1;
2705
2706 if (!has_var)
2707 var = default_var;
2708
2709 if (noaccel)
2710 var.accel_flags &= ~FB_ACCELF_TEXT;
2711 else
2712 var.accel_flags |= FB_ACCELF_TEXT;
2713
2714 if (comp_sync != -1) {
2715 if (!comp_sync)
2716 var.sync &= ~FB_SYNC_COMP_HIGH_ACT;
2717 else
2718 var.sync |= FB_SYNC_COMP_HIGH_ACT;
2719 }
2720
2721 if (var.yres == var.yres_virtual) {
2722 u32 videoram = (info->fix.smem_len - (PAGE_SIZE << 2));
2723 var.yres_virtual = ((videoram * 8) / var.bits_per_pixel) / var.xres_virtual;
2724 if (var.yres_virtual < var.yres)
2725 var.yres_virtual = var.yres;
2726 }
2727
2728 if (atyfb_check_var(&var, info)) {
2729 PRINTKE("can't set default video mode\n");
2730 goto aty_init_exit;
2731 }
2732
2733 #ifdef __sparc__
2734 atyfb_save_palette(par, 0);
2735 #endif
2736
2737 #ifdef CONFIG_FB_ATY_CT
2738 if (!noaccel && M64_HAS(INTEGRATED))
2739 aty_init_cursor(info);
2740 #endif /* CONFIG_FB_ATY_CT */
2741 info->var = var;
2742
2743 fb_alloc_cmap(&info->cmap, 256, 0);
2744
2745 if (register_framebuffer(info) < 0)
2746 goto aty_init_exit;
2747
2748 fb_list = info;
2749
2750 PRINTKI("fb%d: %s frame buffer device on %s\n",
2751 info->node, info->fix.id, name);
2752 return 0;
2753
2754 aty_init_exit:
2755 /* restore video mode */
2756 aty_set_crtc(par, &saved_crtc);
2757 par->pll_ops->set_pll(info, &saved_pll);
2758
2759 #ifdef CONFIG_MTRR
2760 if (par->mtrr_reg >= 0) {
2761 mtrr_del(par->mtrr_reg, 0, 0);
2762 par->mtrr_reg = -1;
2763 }
2764 if (par->mtrr_aper >= 0) {
2765 mtrr_del(par->mtrr_aper, 0, 0);
2766 par->mtrr_aper = -1;
2767 }
2768 #endif
2769 return -1;
2770 }
2771
2772 #ifdef CONFIG_ATARI
2773 static int __devinit store_video_par(char *video_str, unsigned char m64_num)
2774 {
2775 char *p;
2776 unsigned long vmembase, size, guiregbase;
2777
2778 PRINTKI("store_video_par() '%s' \n", video_str);
2779
2780 if (!(p = strsep(&video_str, ";")) || !*p)
2781 goto mach64_invalid;
2782 vmembase = simple_strtoul(p, NULL, 0);
2783 if (!(p = strsep(&video_str, ";")) || !*p)
2784 goto mach64_invalid;
2785 size = simple_strtoul(p, NULL, 0);
2786 if (!(p = strsep(&video_str, ";")) || !*p)
2787 goto mach64_invalid;
2788 guiregbase = simple_strtoul(p, NULL, 0);
2789
2790 phys_vmembase[m64_num] = vmembase;
2791 phys_size[m64_num] = size;
2792 phys_guiregbase[m64_num] = guiregbase;
2793 PRINTKI("stored them all: $%08lX $%08lX $%08lX \n", vmembase, size,
2794 guiregbase);
2795 return 0;
2796
2797 mach64_invalid:
2798 phys_vmembase[m64_num] = 0;
2799 return -1;
2800 }
2801 #endif /* CONFIG_ATARI */
2802
2803 /*
2804 * Blank the display.
2805 */
2806
2807 static int atyfb_blank(int blank, struct fb_info *info)
2808 {
2809 struct atyfb_par *par = (struct atyfb_par *) info->par;
2810 u32 gen_cntl;
2811
2812 if (par->lock_blank || par->asleep)
2813 return 0;
2814
2815 #ifdef CONFIG_FB_ATY_BACKLIGHT
2816 if (machine_is(powermac) && blank > FB_BLANK_NORMAL)
2817 aty_bl_set_power(info, FB_BLANK_POWERDOWN);
2818 #elif defined(CONFIG_FB_ATY_GENERIC_LCD)
2819 if (par->lcd_table && blank > FB_BLANK_NORMAL &&
2820 (aty_ld_lcd(LCD_GEN_CNTL, par) & LCD_ON)) {
2821 u32 pm = aty_ld_lcd(POWER_MANAGEMENT, par);
2822 pm &= ~PWR_BLON;
2823 aty_st_lcd(POWER_MANAGEMENT, pm, par);
2824 }
2825 #endif
2826
2827 gen_cntl = aty_ld_le32(CRTC_GEN_CNTL, par);
2828 switch (blank) {
2829 case FB_BLANK_UNBLANK:
2830 gen_cntl &= ~0x400004c;
2831 break;
2832 case FB_BLANK_NORMAL:
2833 gen_cntl |= 0x4000040;
2834 break;
2835 case FB_BLANK_VSYNC_SUSPEND:
2836 gen_cntl |= 0x4000048;
2837 break;
2838 case FB_BLANK_HSYNC_SUSPEND:
2839 gen_cntl |= 0x4000044;
2840 break;
2841 case FB_BLANK_POWERDOWN:
2842 gen_cntl |= 0x400004c;
2843 break;
2844 }
2845 aty_st_le32(CRTC_GEN_CNTL, gen_cntl, par);
2846
2847 #ifdef CONFIG_FB_ATY_BACKLIGHT
2848 if (machine_is(powermac) && blank <= FB_BLANK_NORMAL)
2849 aty_bl_set_power(info, FB_BLANK_UNBLANK);
2850 #elif defined(CONFIG_FB_ATY_GENERIC_LCD)
2851 if (par->lcd_table && blank <= FB_BLANK_NORMAL &&
2852 (aty_ld_lcd(LCD_GEN_CNTL, par) & LCD_ON)) {
2853 u32 pm = aty_ld_lcd(POWER_MANAGEMENT, par);
2854 pm |= PWR_BLON;
2855 aty_st_lcd(POWER_MANAGEMENT, pm, par);
2856 }
2857 #endif
2858
2859 return 0;
2860 }
2861
2862 static void aty_st_pal(u_int regno, u_int red, u_int green, u_int blue,
2863 const struct atyfb_par *par)
2864 {
2865 #ifdef CONFIG_ATARI
2866 out_8(&par->aty_cmap_regs->windex, regno);
2867 out_8(&par->aty_cmap_regs->lut, red);
2868 out_8(&par->aty_cmap_regs->lut, green);
2869 out_8(&par->aty_cmap_regs->lut, blue);
2870 #else
2871 writeb(regno, &par->aty_cmap_regs->windex);
2872 writeb(red, &par->aty_cmap_regs->lut);
2873 writeb(green, &par->aty_cmap_regs->lut);
2874 writeb(blue, &par->aty_cmap_regs->lut);
2875 #endif
2876 }
2877
2878 /*
2879 * Set a single color register. The values supplied are already
2880 * rounded down to the hardware's capabilities (according to the
2881 * entries in the var structure). Return != 0 for invalid regno.
2882 * !! 4 & 8 = PSEUDO, > 8 = DIRECTCOLOR
2883 */
2884
2885 static int atyfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
2886 u_int transp, struct fb_info *info)
2887 {
2888 struct atyfb_par *par = (struct atyfb_par *) info->par;
2889 int i, depth;
2890 u32 *pal = info->pseudo_palette;
2891
2892 depth = info->var.bits_per_pixel;
2893 if (depth == 16)
2894 depth = (info->var.green.length == 5) ? 15 : 16;
2895
2896 if (par->asleep)
2897 return 0;
2898
2899 if (regno > 255 ||
2900 (depth == 16 && regno > 63) ||
2901 (depth == 15 && regno > 31))
2902 return 1;
2903
2904 red >>= 8;
2905 green >>= 8;
2906 blue >>= 8;
2907
2908 par->palette[regno].red = red;
2909 par->palette[regno].green = green;
2910 par->palette[regno].blue = blue;
2911
2912 if (regno < 16) {
2913 switch (depth) {
2914 case 15:
2915 pal[regno] = (regno << 10) | (regno << 5) | regno;
2916 break;
2917 case 16:
2918 pal[regno] = (regno << 11) | (regno << 5) | regno;
2919 break;
2920 case 24:
2921 pal[regno] = (regno << 16) | (regno << 8) | regno;
2922 break;
2923 case 32:
2924 i = (regno << 8) | regno;
2925 pal[regno] = (i << 16) | i;
2926 break;
2927 }
2928 }
2929
2930 i = aty_ld_8(DAC_CNTL, par) & 0xfc;
2931 if (M64_HAS(EXTRA_BRIGHT))
2932 i |= 0x2; /* DAC_CNTL | 0x2 turns off the extra brightness for gt */
2933 aty_st_8(DAC_CNTL, i, par);
2934 aty_st_8(DAC_MASK, 0xff, par);
2935
2936 if (M64_HAS(INTEGRATED)) {
2937 if (depth == 16) {
2938 if (regno < 32)
2939 aty_st_pal(regno << 3, red,
2940 par->palette[regno<<1].green,
2941 blue, par);
2942 red = par->palette[regno>>1].red;
2943 blue = par->palette[regno>>1].blue;
2944 regno <<= 2;
2945 } else if (depth == 15) {
2946 regno <<= 3;
2947 for(i = 0; i < 8; i++) {
2948 aty_st_pal(regno + i, red, green, blue, par);
2949 }
2950 }
2951 }
2952 aty_st_pal(regno, red, green, blue, par);
2953
2954 return 0;
2955 }
2956
2957 #ifdef CONFIG_PCI
2958
2959 #ifdef __sparc__
2960
2961 extern void (*prom_palette) (int);
2962
2963 static int __devinit atyfb_setup_sparc(struct pci_dev *pdev,
2964 struct fb_info *info, unsigned long addr)
2965 {
2966 extern int con_is_present(void);
2967
2968 struct atyfb_par *par = info->par;
2969 struct pcidev_cookie *pcp;
2970 char prop[128];
2971 int node, len, i, j, ret;
2972 u32 mem, chip_id;
2973
2974 /* Do not attach when we have a serial console. */
2975 if (!con_is_present())
2976 return -ENXIO;
2977
2978 /*
2979 * Map memory-mapped registers.
2980 */
2981 par->ati_regbase = (void *)addr + 0x7ffc00UL;
2982 info->fix.mmio_start = addr + 0x7ffc00UL;
2983
2984 /*
2985 * Map in big-endian aperture.
2986 */
2987 info->screen_base = (char *) (addr + 0x800000UL);
2988 info->fix.smem_start = addr + 0x800000UL;
2989
2990 /*
2991 * Figure mmap addresses from PCI config space.
2992 * Split Framebuffer in big- and little-endian halfs.
2993 */
2994 for (i = 0; i < 6 && pdev->resource[i].start; i++)
2995 /* nothing */ ;
2996 j = i + 4;
2997
2998 par->mmap_map = kmalloc(j * sizeof(*par->mmap_map), GFP_ATOMIC);
2999 if (!par->mmap_map) {
3000 PRINTKE("atyfb_setup_sparc() can't alloc mmap_map\n");
3001 return -ENOMEM;
3002 }
3003 memset(par->mmap_map, 0, j * sizeof(*par->mmap_map));
3004
3005 for (i = 0, j = 2; i < 6 && pdev->resource[i].start; i++) {
3006 struct resource *rp = &pdev->resource[i];
3007 int io, breg = PCI_BASE_ADDRESS_0 + (i << 2);
3008 unsigned long base;
3009 u32 size, pbase;
3010
3011 base = rp->start;
3012
3013 io = (rp->flags & IORESOURCE_IO);
3014
3015 size = rp->end - base + 1;
3016
3017 pci_read_config_dword(pdev, breg, &pbase);
3018
3019 if (io)
3020 size &= ~1;
3021
3022 /*
3023 * Map the framebuffer a second time, this time without
3024 * the braindead _PAGE_IE setting. This is used by the
3025 * fixed Xserver, but we need to maintain the old mapping
3026 * to stay compatible with older ones...
3027 */
3028 if (base == addr) {
3029 par->mmap_map[j].voff = (pbase + 0x10000000) & PAGE_MASK;
3030 par->mmap_map[j].poff = base & PAGE_MASK;
3031 par->mmap_map[j].size = (size + ~PAGE_MASK) & PAGE_MASK;
3032 par->mmap_map[j].prot_mask = _PAGE_CACHE;
3033 par->mmap_map[j].prot_flag = _PAGE_E;
3034 j++;
3035 }
3036
3037 /*
3038 * Here comes the old framebuffer mapping with _PAGE_IE
3039 * set for the big endian half of the framebuffer...
3040 */
3041 if (base == addr) {
3042 par->mmap_map[j].voff = (pbase + 0x800000) & PAGE_MASK;
3043 par->mmap_map[j].poff = (base + 0x800000) & PAGE_MASK;
3044 par->mmap_map[j].size = 0x800000;
3045 par->mmap_map[j].prot_mask = _PAGE_CACHE;
3046 par->mmap_map[j].prot_flag = _PAGE_E | _PAGE_IE;
3047 size -= 0x800000;
3048 j++;
3049 }
3050
3051 par->mmap_map[j].voff = pbase & PAGE_MASK;
3052 par->mmap_map[j].poff = base & PAGE_MASK;
3053 par->mmap_map[j].size = (size + ~PAGE_MASK) & PAGE_MASK;
3054 par->mmap_map[j].prot_mask = _PAGE_CACHE;
3055 par->mmap_map[j].prot_flag = _PAGE_E;
3056 j++;
3057 }
3058
3059 if((ret = correct_chipset(par)))
3060 return ret;
3061
3062 if (IS_XL(pdev->device)) {
3063 /*
3064 * Fix PROMs idea of MEM_CNTL settings...
3065 */
3066 mem = aty_ld_le32(MEM_CNTL, par);
3067 chip_id = aty_ld_le32(CONFIG_CHIP_ID, par);
3068 if (((chip_id & CFG_CHIP_TYPE) == VT_CHIP_ID) && !((chip_id >> 24) & 1)) {
3069 switch (mem & 0x0f) {
3070 case 3:
3071 mem = (mem & ~(0x0f)) | 2;
3072 break;
3073 case 7:
3074 mem = (mem & ~(0x0f)) | 3;
3075 break;
3076 case 9:
3077 mem = (mem & ~(0x0f)) | 4;
3078 break;
3079 case 11:
3080 mem = (mem & ~(0x0f)) | 5;
3081 break;
3082 default:
3083 break;
3084 }
3085 if ((aty_ld_le32(CONFIG_STAT0, par) & 7) >= SDRAM)
3086 mem &= ~(0x00700000);
3087 }
3088 mem &= ~(0xcf80e000); /* Turn off all undocumented bits. */
3089 aty_st_le32(MEM_CNTL, mem, par);
3090 }
3091
3092 /*
3093 * If this is the console device, we will set default video
3094 * settings to what the PROM left us with.
3095 */
3096 node = prom_getchild(prom_root_node);
3097 node = prom_searchsiblings(node, "aliases");
3098 if (node) {
3099 len = prom_getproperty(node, "screen", prop, sizeof(prop));
3100 if (len > 0) {
3101 prop[len] = '\0';
3102 node = prom_finddevice(prop);
3103 } else
3104 node = 0;
3105 }
3106
3107 pcp = pdev->sysdata;
3108 if (node == pcp->prom_node->node) {
3109 struct fb_var_screeninfo *var = &default_var;
3110 unsigned int N, P, Q, M, T, R;
3111 u32 v_total, h_total;
3112 struct crtc crtc;
3113 u8 pll_regs[16];
3114 u8 clock_cntl;
3115
3116 crtc.vxres = prom_getintdefault(node, "width", 1024);
3117 crtc.vyres = prom_getintdefault(node, "height", 768);
3118 var->bits_per_pixel = prom_getintdefault(node, "depth", 8);
3119 var->xoffset = var->yoffset = 0;
3120 crtc.h_tot_disp = aty_ld_le32(CRTC_H_TOTAL_DISP, par);
3121 crtc.h_sync_strt_wid = aty_ld_le32(CRTC_H_SYNC_STRT_WID, par);
3122 crtc.v_tot_disp = aty_ld_le32(CRTC_V_TOTAL_DISP, par);
3123 crtc.v_sync_strt_wid = aty_ld_le32(CRTC_V_SYNC_STRT_WID, par);
3124 crtc.gen_cntl = aty_ld_le32(CRTC_GEN_CNTL, par);
3125 aty_crtc_to_var(&crtc, var);
3126
3127 h_total = var->xres + var->right_margin + var->hsync_len + var->left_margin;
3128 v_total = var->yres + var->lower_margin + var->vsync_len + var->upper_margin;
3129
3130 /*
3131 * Read the PLL to figure actual Refresh Rate.
3132 */
3133 clock_cntl = aty_ld_8(CLOCK_CNTL, par);
3134 /* DPRINTK("CLOCK_CNTL %02x\n", clock_cntl); */
3135 for (i = 0; i < 16; i++)
3136 pll_regs[i] = aty_ld_pll_ct(i, par);
3137
3138 /*
3139 * PLL Reference Divider M:
3140 */
3141 M = pll_regs[2];
3142
3143 /*
3144 * PLL Feedback Divider N (Dependant on CLOCK_CNTL):
3145 */
3146 N = pll_regs[7 + (clock_cntl & 3)];
3147
3148 /*
3149 * PLL Post Divider P (Dependant on CLOCK_CNTL):
3150 */
3151 P = 1 << (pll_regs[6] >> ((clock_cntl & 3) << 1));
3152
3153 /*
3154 * PLL Divider Q:
3155 */
3156 Q = N / P;
3157
3158 /*
3159 * Target Frequency:
3160 *
3161 * T * M
3162 * Q = -------
3163 * 2 * R
3164 *
3165 * where R is XTALIN (= 14318 or 29498 kHz).
3166 */
3167 if (IS_XL(pdev->device))
3168 R = 29498;
3169 else
3170 R = 14318;
3171
3172 T = 2 * Q * R / M;
3173
3174 default_var.pixclock = 1000000000 / T;
3175 }
3176
3177 return 0;
3178 }
3179
3180 #else /* __sparc__ */
3181
3182 #ifdef __i386__
3183 #ifdef CONFIG_FB_ATY_GENERIC_LCD
3184 static void aty_init_lcd(struct atyfb_par *par, u32 bios_base)
3185 {
3186 u32 driv_inf_tab, sig;
3187 u16 lcd_ofs;
3188
3189 /* To support an LCD panel, we should know it's dimensions and
3190 * it's desired pixel clock.
3191 * There are two ways to do it:
3192 * - Check the startup video mode and calculate the panel
3193 * size from it. This is unreliable.
3194 * - Read it from the driver information table in the video BIOS.
3195 */
3196 /* Address of driver information table is at offset 0x78. */
3197 driv_inf_tab = bios_base + *((u16 *)(bios_base+0x78));
3198
3199 /* Check for the driver information table signature. */
3200 sig = (*(u32 *)driv_inf_tab);
3201 if ((sig == 0x54504c24) || /* Rage LT pro */
3202 (sig == 0x544d5224) || /* Rage mobility */
3203 (sig == 0x54435824) || /* Rage XC */
3204 (sig == 0x544c5824)) { /* Rage XL */
3205 PRINTKI("BIOS contains driver information table.\n");
3206 lcd_ofs = (*(u16 *)(driv_inf_tab + 10));
3207 par->lcd_table = 0;
3208 if (lcd_ofs != 0) {
3209 par->lcd_table = bios_base + lcd_ofs;
3210 }
3211 }
3212
3213 if (par->lcd_table != 0) {
3214 char model[24];
3215 char strbuf[16];
3216 char refresh_rates_buf[100];
3217 int id, tech, f, i, m, default_refresh_rate;
3218 char *txtcolour;
3219 char *txtmonitor;
3220 char *txtdual;
3221 char *txtformat;
3222 u16 width, height, panel_type, refresh_rates;
3223 u16 *lcdmodeptr;
3224 u32 format;
3225 u8 lcd_refresh_rates[16] = {50,56,60,67,70,72,75,76,85,90,100,120,140,150,160,200};
3226 /* The most important information is the panel size at
3227 * offset 25 and 27, but there's some other nice information
3228 * which we print to the screen.
3229 */
3230 id = *(u8 *)par->lcd_table;
3231 strncpy(model,(char *)par->lcd_table+1,24);
3232 model[23]=0;
3233
3234 width = par->lcd_width = *(u16 *)(par->lcd_table+25);
3235 height = par->lcd_height = *(u16 *)(par->lcd_table+27);
3236 panel_type = *(u16 *)(par->lcd_table+29);
3237 if (panel_type & 1)
3238 txtcolour = "colour";
3239 else
3240 txtcolour = "monochrome";
3241 if (panel_type & 2)
3242 txtdual = "dual (split) ";
3243 else
3244 txtdual = "";
3245 tech = (panel_type>>2) & 63;
3246 switch (tech) {
3247 case 0:
3248 txtmonitor = "passive matrix";
3249 break;
3250 case 1:
3251 txtmonitor = "active matrix";
3252 break;
3253 case 2:
3254 txtmonitor = "active addressed STN";
3255 break;
3256 case 3:
3257 txtmonitor = "EL";
3258 break;
3259 case 4:
3260 txtmonitor = "plasma";
3261 break;
3262 default:
3263 txtmonitor = "unknown";
3264 }
3265 format = *(u32 *)(par->lcd_table+57);
3266 if (tech == 0 || tech == 2) {
3267 switch (format & 7) {
3268 case 0:
3269 txtformat = "12 bit interface";
3270 break;
3271 case 1:
3272 txtformat = "16 bit interface";
3273 break;
3274 case 2:
3275 txtformat = "24 bit interface";
3276 break;
3277 default:
3278 txtformat = "unkown format";
3279 }
3280 } else {
3281 switch (format & 7) {
3282 case 0:
3283 txtformat = "8 colours";
3284 break;
3285 case 1:
3286 txtformat = "512 colours";
3287 break;
3288 case 2:
3289 txtformat = "4096 colours";
3290 break;
3291 case 4:
3292 txtformat = "262144 colours (LT mode)";
3293 break;
3294 case 5:
3295 txtformat = "16777216 colours";
3296 break;
3297 case 6:
3298 txtformat = "262144 colours (FDPI-2 mode)";
3299 break;
3300 default:
3301 txtformat = "unkown format";
3302 }
3303 }
3304 PRINTKI("%s%s %s monitor detected: %s\n",
3305 txtdual ,txtcolour, txtmonitor, model);
3306 PRINTKI(" id=%d, %dx%d pixels, %s\n",
3307 id, width, height, txtformat);
3308 refresh_rates_buf[0] = 0;
3309 refresh_rates = *(u16 *)(par->lcd_table+62);
3310 m = 1;
3311 f = 0;
3312 for (i=0;i<16;i++) {
3313 if (refresh_rates & m) {
3314 if (f == 0) {
3315 sprintf(strbuf, "%d", lcd_refresh_rates[i]);
3316 f++;
3317 } else {
3318 sprintf(strbuf, ",%d", lcd_refresh_rates[i]);
3319 }
3320 strcat(refresh_rates_buf,strbuf);
3321 }
3322 m = m << 1;
3323 }
3324 default_refresh_rate = (*(u8 *)(par->lcd_table+61) & 0xf0) >> 4;
3325 PRINTKI(" supports refresh rates [%s], default %d Hz\n",
3326 refresh_rates_buf, lcd_refresh_rates[default_refresh_rate]);
3327 par->lcd_refreshrate = lcd_refresh_rates[default_refresh_rate];
3328 /* We now need to determine the crtc parameters for the
3329 * LCD monitor. This is tricky, because they are not stored
3330 * individually in the BIOS. Instead, the BIOS contains a
3331 * table of display modes that work for this monitor.
3332 *
3333 * The idea is that we search for a mode of the same dimensions
3334 * as the dimensions of the LCD monitor. Say our LCD monitor
3335 * is 800x600 pixels, we search for a 800x600 monitor.
3336 * The CRTC parameters we find here are the ones that we need
3337 * to use to simulate other resolutions on the LCD screen.
3338 */
3339 lcdmodeptr = (u16 *)(par->lcd_table + 64);
3340 while (*lcdmodeptr != 0) {
3341 u32 modeptr;
3342 u16 mwidth, mheight, lcd_hsync_start, lcd_vsync_start;
3343 modeptr = bios_base + *lcdmodeptr;
3344
3345 mwidth = *((u16 *)(modeptr+0));
3346 mheight = *((u16 *)(modeptr+2));
3347
3348 if (mwidth == width && mheight == height) {
3349 par->lcd_pixclock = 100000000 / *((u16 *)(modeptr+9));
3350 par->lcd_htotal = *((u16 *)(modeptr+17)) & 511;
3351 par->lcd_hdisp = *((u16 *)(modeptr+19)) & 511;
3352 lcd_hsync_start = *((u16 *)(modeptr+21)) & 511;
3353 par->lcd_hsync_dly = (*((u16 *)(modeptr+21)) >> 9) & 7;
3354 par->lcd_hsync_len = *((u8 *)(modeptr+23)) & 63;
3355
3356 par->lcd_vtotal = *((u16 *)(modeptr+24)) & 2047;
3357 par->lcd_vdisp = *((u16 *)(modeptr+26)) & 2047;
3358 lcd_vsync_start = *((u16 *)(modeptr+28)) & 2047;
3359 par->lcd_vsync_len = (*((u16 *)(modeptr+28)) >> 11) & 31;
3360
3361 par->lcd_htotal = (par->lcd_htotal + 1) * 8;
3362 par->lcd_hdisp = (par->lcd_hdisp + 1) * 8;
3363 lcd_hsync_start = (lcd_hsync_start + 1) * 8;
3364 par->lcd_hsync_len = par->lcd_hsync_len * 8;
3365
3366 par->lcd_vtotal++;
3367 par->lcd_vdisp++;
3368 lcd_vsync_start++;
3369
3370 par->lcd_right_margin = lcd_hsync_start - par->lcd_hdisp;
3371 par->lcd_lower_margin = lcd_vsync_start - par->lcd_vdisp;
3372 par->lcd_hblank_len = par->lcd_htotal - par->lcd_hdisp;
3373 par->lcd_vblank_len = par->lcd_vtotal - par->lcd_vdisp;
3374 break;
3375 }
3376
3377 lcdmodeptr++;
3378 }
3379 if (*lcdmodeptr == 0) {
3380 PRINTKE("LCD monitor CRTC parameters not found!!!\n");
3381 /* To do: Switch to CRT if possible. */
3382 } else {
3383 PRINTKI(" LCD CRTC parameters: %d.%d %d %d %d %d %d %d %d %d\n",
3384 1000000 / par->lcd_pixclock, 1000000 % par->lcd_pixclock,
3385 par->lcd_hdisp,
3386 par->lcd_hdisp + par->lcd_right_margin,
3387 par->lcd_hdisp + par->lcd_right_margin
3388 + par->lcd_hsync_dly + par->lcd_hsync_len,
3389 par->lcd_htotal,
3390 par->lcd_vdisp,
3391 par->lcd_vdisp + par->lcd_lower_margin,
3392 par->lcd_vdisp + par->lcd_lower_margin + par->lcd_vsync_len,
3393 par->lcd_vtotal);
3394 PRINTKI(" : %d %d %d %d %d %d %d %d %d\n",
3395 par->lcd_pixclock,
3396 par->lcd_hblank_len - (par->lcd_right_margin +
3397 par->lcd_hsync_dly + par->lcd_hsync_len),
3398 par->lcd_hdisp,
3399 par->lcd_right_margin,
3400 par->lcd_hsync_len,
3401 par->lcd_vblank_len - (par->lcd_lower_margin + par->lcd_vsync_len),
3402 par->lcd_vdisp,
3403 par->lcd_lower_margin,
3404 par->lcd_vsync_len);
3405 }
3406 }
3407 }
3408 #endif /* CONFIG_FB_ATY_GENERIC_LCD */
3409
3410 static int __devinit init_from_bios(struct atyfb_par *par)
3411 {
3412 u32 bios_base, rom_addr;
3413 int ret;
3414
3415 rom_addr = 0xc0000 + ((aty_ld_le32(SCRATCH_REG1, par) & 0x7f) << 11);
3416 bios_base = (unsigned long)ioremap(rom_addr, 0x10000);
3417
3418 /* The BIOS starts with 0xaa55. */
3419 if (*((u16 *)bios_base) == 0xaa55) {
3420
3421 u8 *bios_ptr;
3422 u16 rom_table_offset, freq_table_offset;
3423 PLL_BLOCK_MACH64 pll_block;
3424
3425 PRINTKI("Mach64 BIOS is located at %x, mapped at %x.\n", rom_addr, bios_base);
3426
3427 /* check for frequncy table */
3428 bios_ptr = (u8*)bios_base;
3429 rom_table_offset = (u16)(bios_ptr[0x48] | (bios_ptr[0x49] << 8));
3430 freq_table_offset = bios_ptr[rom_table_offset + 16] | (bios_ptr[rom_table_offset + 17] << 8);
3431 memcpy(&pll_block, bios_ptr + freq_table_offset, sizeof(PLL_BLOCK_MACH64));
3432
3433 PRINTKI("BIOS frequency table:\n");
3434 PRINTKI("PCLK_min_freq %d, PCLK_max_freq %d, ref_freq %d, ref_divider %d\n",
3435 pll_block.PCLK_min_freq, pll_block.PCLK_max_freq,
3436 pll_block.ref_freq, pll_block.ref_divider);
3437 PRINTKI("MCLK_pwd %d, MCLK_max_freq %d, XCLK_max_freq %d, SCLK_freq %d\n",
3438 pll_block.MCLK_pwd, pll_block.MCLK_max_freq,
3439 pll_block.XCLK_max_freq, pll_block.SCLK_freq);
3440
3441 par->pll_limits.pll_min = pll_block.PCLK_min_freq/100;
3442 par->pll_limits.pll_max = pll_block.PCLK_max_freq/100;
3443 par->pll_limits.ref_clk = pll_block.ref_freq/100;
3444 par->pll_limits.ref_div = pll_block.ref_divider;
3445 par->pll_limits.sclk = pll_block.SCLK_freq/100;
3446 par->pll_limits.mclk = pll_block.MCLK_max_freq/100;
3447 par->pll_limits.mclk_pm = pll_block.MCLK_pwd/100;
3448 par->pll_limits.xclk = pll_block.XCLK_max_freq/100;
3449 #ifdef CONFIG_FB_ATY_GENERIC_LCD
3450 aty_init_lcd(par, bios_base);
3451 #endif
3452 ret = 0;
3453 } else {
3454 PRINTKE("no BIOS frequency table found, use parameters\n");
3455 ret = -ENXIO;
3456 }
3457 iounmap((void* __iomem )bios_base);
3458
3459 return ret;
3460 }
3461 #endif /* __i386__ */
3462
3463 static int __devinit atyfb_setup_generic(struct pci_dev *pdev, struct fb_info *info, unsigned long addr)
3464 {
3465 struct atyfb_par *par = info->par;
3466 u16 tmp;
3467 unsigned long raddr;
3468 struct resource *rrp;
3469 int ret = 0;
3470
3471 raddr = addr + 0x7ff000UL;
3472 rrp = &pdev->resource[2];
3473 if ((rrp->flags & IORESOURCE_MEM) && request_mem_region(rrp->start, rrp->end - rrp->start + 1, "atyfb")) {
3474 par->aux_start = rrp->start;
3475 par->aux_size = rrp->end - rrp->start + 1;
3476 raddr = rrp->start;
3477 PRINTKI("using auxiliary register aperture\n");
3478 }
3479
3480 info->fix.mmio_start = raddr;
3481 par->ati_regbase = ioremap(info->fix.mmio_start, 0x1000);
3482 if (par->ati_regbase == 0)
3483 return -ENOMEM;
3484
3485 info->fix.mmio_start += par->aux_start ? 0x400 : 0xc00;
3486 par->ati_regbase += par->aux_start ? 0x400 : 0xc00;
3487
3488 /*
3489 * Enable memory-space accesses using config-space
3490 * command register.
3491 */
3492 pci_read_config_word(pdev, PCI_COMMAND, &tmp);
3493 if (!(tmp & PCI_COMMAND_MEMORY)) {
3494 tmp |= PCI_COMMAND_MEMORY;
3495 pci_write_config_word(pdev, PCI_COMMAND, tmp);
3496 }
3497 #ifdef __BIG_ENDIAN
3498 /* Use the big-endian aperture */
3499 addr += 0x800000;
3500 #endif
3501
3502 /* Map in frame buffer */
3503 info->fix.smem_start = addr;
3504 info->screen_base = ioremap(addr, 0x800000);
3505 if (info->screen_base == NULL) {
3506 ret = -ENOMEM;
3507 goto atyfb_setup_generic_fail;
3508 }
3509
3510 if((ret = correct_chipset(par)))
3511 goto atyfb_setup_generic_fail;
3512 #ifdef __i386__
3513 if((ret = init_from_bios(par)))
3514 goto atyfb_setup_generic_fail;
3515 #endif
3516 if (!(aty_ld_le32(CRTC_GEN_CNTL, par) & CRTC_EXT_DISP_EN))
3517 par->clk_wr_offset = (inb(R_GENMO) & 0x0CU) >> 2;
3518 else
3519 par->clk_wr_offset = aty_ld_8(CLOCK_CNTL, par) & 0x03U;
3520
3521 /* according to ATI, we should use clock 3 for acelerated mode */
3522 par->clk_wr_offset = 3;
3523
3524 return 0;
3525
3526 atyfb_setup_generic_fail:
3527 iounmap(par->ati_regbase);
3528 par->ati_regbase = NULL;
3529 return ret;
3530 }
3531
3532 #endif /* !__sparc__ */
3533
3534 static int __devinit atyfb_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3535 {
3536 unsigned long addr, res_start, res_size;
3537 struct fb_info *info;
3538 struct resource *rp;
3539 struct atyfb_par *par;
3540 int i, rc = -ENOMEM;
3541
3542 for (i = ARRAY_SIZE(aty_chips) - 1; i >= 0; i--)
3543 if (pdev->device == aty_chips[i].pci_id)
3544 break;
3545
3546 if (i < 0)
3547 return -ENODEV;
3548
3549 /* Enable device in PCI config */
3550 if (pci_enable_device(pdev)) {
3551 PRINTKE("Cannot enable PCI device\n");
3552 return -ENXIO;
3553 }
3554
3555 /* Find which resource to use */
3556 rp = &pdev->resource[0];
3557 if (rp->flags & IORESOURCE_IO)
3558 rp = &pdev->resource[1];
3559 addr = rp->start;
3560 if (!addr)
3561 return -ENXIO;
3562
3563 /* Reserve space */
3564 res_start = rp->start;
3565 res_size = rp->end - rp->start + 1;
3566 if (!request_mem_region (res_start, res_size, "atyfb"))
3567 return -EBUSY;
3568
3569 /* Allocate framebuffer */
3570 info = framebuffer_alloc(sizeof(struct atyfb_par), &pdev->dev);
3571 if (!info) {
3572 PRINTKE("atyfb_pci_probe() can't alloc fb_info\n");
3573 return -ENOMEM;
3574 }
3575 par = info->par;
3576 info->fix = atyfb_fix;
3577 info->device = &pdev->dev;
3578 par->pci_id = aty_chips[i].pci_id;
3579 par->res_start = res_start;
3580 par->res_size = res_size;
3581 par->irq = pdev->irq;
3582 par->pdev = pdev;
3583
3584 /* Setup "info" structure */
3585 #ifdef __sparc__
3586 rc = atyfb_setup_sparc(pdev, info, addr);
3587 #else
3588 rc = atyfb_setup_generic(pdev, info, addr);
3589 #endif
3590 if (rc)
3591 goto err_release_mem;
3592
3593 pci_set_drvdata(pdev, info);
3594
3595 /* Init chip & register framebuffer */
3596 if (aty_init(info, "PCI"))
3597 goto err_release_io;
3598
3599 #ifdef __sparc__
3600 if (!prom_palette)
3601 prom_palette = atyfb_palette;
3602
3603 /*
3604 * Add /dev/fb mmap values.
3605 */
3606 par->mmap_map[0].voff = 0x8000000000000000UL;
3607 par->mmap_map[0].poff = (unsigned long) info->screen_base & PAGE_MASK;
3608 par->mmap_map[0].size = info->fix.smem_len;
3609 par->mmap_map[0].prot_mask = _PAGE_CACHE;
3610 par->mmap_map[0].prot_flag = _PAGE_E;
3611 par->mmap_map[1].voff = par->mmap_map[0].voff + info->fix.smem_len;
3612 par->mmap_map[1].poff = (long)par->ati_regbase & PAGE_MASK;
3613 par->mmap_map[1].size = PAGE_SIZE;
3614 par->mmap_map[1].prot_mask = _PAGE_CACHE;
3615 par->mmap_map[1].prot_flag = _PAGE_E;
3616 #endif /* __sparc__ */
3617
3618 return 0;
3619
3620 err_release_io:
3621 #ifdef __sparc__
3622 kfree(par->mmap_map);
3623 #else
3624 if (par->ati_regbase)
3625 iounmap(par->ati_regbase);
3626 if (info->screen_base)
3627 iounmap(info->screen_base);
3628 #endif
3629 err_release_mem:
3630 if (par->aux_start)
3631 release_mem_region(par->aux_start, par->aux_size);
3632
3633 release_mem_region(par->res_start, par->res_size);
3634 framebuffer_release(info);
3635
3636 return rc;
3637 }
3638
3639 #endif /* CONFIG_PCI */
3640
3641 #ifdef CONFIG_ATARI
3642
3643 static int __devinit atyfb_atari_probe(void)
3644 {
3645 struct atyfb_par *par;
3646 struct fb_info *info;
3647 int m64_num;
3648 u32 clock_r;
3649
3650 for (m64_num = 0; m64_num < mach64_count; m64_num++) {
3651 if (!phys_vmembase[m64_num] || !phys_size[m64_num] ||
3652 !phys_guiregbase[m64_num]) {
3653 PRINTKI("phys_*[%d] parameters not set => returning early. \n", m64_num);
3654 continue;
3655 }
3656
3657 info = framebuffer_alloc(sizeof(struct atyfb_par), NULL);
3658 if (!info) {
3659 PRINTKE("atyfb_atari_probe() can't alloc fb_info\n");
3660 return -ENOMEM;
3661 }
3662 par = info->par;
3663
3664 info->fix = atyfb_fix;
3665
3666 par->irq = (unsigned int) -1; /* something invalid */
3667
3668 /*
3669 * Map the video memory (physical address given) to somewhere in the
3670 * kernel address space.
3671 */
3672 info->screen_base = ioremap(phys_vmembase[m64_num], phys_size[m64_num]);
3673 info->fix.smem_start = (unsigned long)info->screen_base; /* Fake! */
3674 par->ati_regbase = ioremap(phys_guiregbase[m64_num], 0x10000) +
3675 0xFC00ul;
3676 info->fix.mmio_start = (unsigned long)par->ati_regbase; /* Fake! */
3677
3678 aty_st_le32(CLOCK_CNTL, 0x12345678, par);
3679 clock_r = aty_ld_le32(CLOCK_CNTL, par);
3680
3681 switch (clock_r & 0x003F) {
3682 case 0x12:
3683 par->clk_wr_offset = 3; /* */
3684 break;
3685 case 0x34:
3686 par->clk_wr_offset = 2; /* Medusa ST-IO ISA Adapter etc. */
3687 break;
3688 case 0x16:
3689 par->clk_wr_offset = 1; /* */
3690 break;
3691 case 0x38:
3692 par->clk_wr_offset = 0; /* Panther 1 ISA Adapter (Gerald) */
3693 break;
3694 }
3695
3696 if (aty_init(info, "ISA bus")) {
3697 framebuffer_release(info);
3698 /* This is insufficient! kernel_map has added two large chunks!! */
3699 return -ENXIO;
3700 }
3701 }
3702 }
3703
3704 #endif /* CONFIG_ATARI */
3705
3706 static void __devexit atyfb_remove(struct fb_info *info)
3707 {
3708 struct atyfb_par *par = (struct atyfb_par *) info->par;
3709
3710 /* restore video mode */
3711 aty_set_crtc(par, &saved_crtc);
3712 par->pll_ops->set_pll(info, &saved_pll);
3713
3714 #ifdef CONFIG_FB_ATY_BACKLIGHT
3715 if (M64_HAS(MOBIL_BUS))
3716 aty_bl_exit(par);
3717 #endif
3718
3719 unregister_framebuffer(info);
3720
3721 #ifdef CONFIG_MTRR
3722 if (par->mtrr_reg >= 0) {
3723 mtrr_del(par->mtrr_reg, 0, 0);
3724 par->mtrr_reg = -1;
3725 }
3726 if (par->mtrr_aper >= 0) {
3727 mtrr_del(par->mtrr_aper, 0, 0);
3728 par->mtrr_aper = -1;
3729 }
3730 #endif
3731 #ifndef __sparc__
3732 if (par->ati_regbase)
3733 iounmap(par->ati_regbase);
3734 if (info->screen_base)
3735 iounmap(info->screen_base);
3736 #ifdef __BIG_ENDIAN
3737 if (info->sprite.addr)
3738 iounmap(info->sprite.addr);
3739 #endif
3740 #endif
3741 #ifdef __sparc__
3742 kfree(par->mmap_map);
3743 #endif
3744 if (par->aux_start)
3745 release_mem_region(par->aux_start, par->aux_size);
3746
3747 if (par->res_start)
3748 release_mem_region(par->res_start, par->res_size);
3749
3750 framebuffer_release(info);
3751 }
3752
3753 #ifdef CONFIG_PCI
3754
3755 static void __devexit atyfb_pci_remove(struct pci_dev *pdev)
3756 {
3757 struct fb_info *info = pci_get_drvdata(pdev);
3758
3759 atyfb_remove(info);
3760 }
3761
3762 /*
3763 * This driver uses its own matching table. That will be more difficult
3764 * to fix, so for now, we just match against any ATI ID and let the
3765 * probe() function find out what's up. That also mean we don't have
3766 * a module ID table though.
3767 */
3768 static struct pci_device_id atyfb_pci_tbl[] = {
3769 { PCI_VENDOR_ID_ATI, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
3770 PCI_BASE_CLASS_DISPLAY << 16, 0xff0000, 0 },
3771 { 0, }
3772 };
3773
3774 static struct pci_driver atyfb_driver = {
3775 .name = "atyfb",
3776 .id_table = atyfb_pci_tbl,
3777 .probe = atyfb_pci_probe,
3778 .remove = __devexit_p(atyfb_pci_remove),
3779 #ifdef CONFIG_PM
3780 .suspend = atyfb_pci_suspend,
3781 .resume = atyfb_pci_resume,
3782 #endif /* CONFIG_PM */
3783 };
3784
3785 #endif /* CONFIG_PCI */
3786
3787 #ifndef MODULE
3788 static int __devinit atyfb_setup(char *options)
3789 {
3790 char *this_opt;
3791
3792 if (!options || !*options)
3793 return 0;
3794
3795 while ((this_opt = strsep(&options, ",")) != NULL) {
3796 if (!strncmp(this_opt, "noaccel", 7)) {
3797 noaccel = 1;
3798 #ifdef CONFIG_MTRR
3799 } else if (!strncmp(this_opt, "nomtrr", 6)) {
3800 nomtrr = 1;
3801 #endif
3802 } else if (!strncmp(this_opt, "vram:", 5))
3803 vram = simple_strtoul(this_opt + 5, NULL, 0);
3804 else if (!strncmp(this_opt, "pll:", 4))
3805 pll = simple_strtoul(this_opt + 4, NULL, 0);
3806 else if (!strncmp(this_opt, "mclk:", 5))
3807 mclk = simple_strtoul(this_opt + 5, NULL, 0);
3808 else if (!strncmp(this_opt, "xclk:", 5))
3809 xclk = simple_strtoul(this_opt+5, NULL, 0);
3810 else if (!strncmp(this_opt, "comp_sync:", 10))
3811 comp_sync = simple_strtoul(this_opt+10, NULL, 0);
3812 #ifdef CONFIG_PPC
3813 else if (!strncmp(this_opt, "vmode:", 6)) {
3814 unsigned int vmode =
3815 simple_strtoul(this_opt + 6, NULL, 0);
3816 if (vmode > 0 && vmode <= VMODE_MAX)
3817 default_vmode = vmode;
3818 } else if (!strncmp(this_opt, "cmode:", 6)) {
3819 unsigned int cmode =
3820 simple_strtoul(this_opt + 6, NULL, 0);
3821 switch (cmode) {
3822 case 0:
3823 case 8:
3824 default_cmode = CMODE_8;
3825 break;
3826 case 15:
3827 case 16:
3828 default_cmode = CMODE_16;
3829 break;
3830 case 24:
3831 case 32:
3832 default_cmode = CMODE_32;
3833 break;
3834 }
3835 }
3836 #endif
3837 #ifdef CONFIG_ATARI
3838 /*
3839 * Why do we need this silly Mach64 argument?
3840 * We are already here because of mach64= so its redundant.
3841 */
3842 else if (MACH_IS_ATARI
3843 && (!strncmp(this_opt, "Mach64:", 7))) {
3844 static unsigned char m64_num;
3845 static char mach64_str[80];
3846 strlcpy(mach64_str, this_opt + 7, sizeof(mach64_str));
3847 if (!store_video_par(mach64_str, m64_num)) {
3848 m64_num++;
3849 mach64_count = m64_num;
3850 }
3851 }
3852 #endif
3853 else
3854 mode = this_opt;
3855 }
3856 return 0;
3857 }
3858 #endif /* MODULE */
3859
3860 static int __devinit atyfb_init(void)
3861 {
3862 #ifndef MODULE
3863 char *option = NULL;
3864
3865 if (fb_get_options("atyfb", &option))
3866 return -ENODEV;
3867 atyfb_setup(option);
3868 #endif
3869
3870 #ifdef CONFIG_PCI
3871 pci_register_driver(&atyfb_driver);
3872 #endif
3873 #ifdef CONFIG_ATARI
3874 atyfb_atari_probe();
3875 #endif
3876 return 0;
3877 }
3878
3879 static void __exit atyfb_exit(void)
3880 {
3881 #ifdef CONFIG_PCI
3882 pci_unregister_driver(&atyfb_driver);
3883 #endif
3884 }
3885
3886 module_init(atyfb_init);
3887 module_exit(atyfb_exit);
3888
3889 MODULE_DESCRIPTION("FBDev driver for ATI Mach64 cards");
3890 MODULE_LICENSE("GPL");
3891 module_param(noaccel, bool, 0);
3892 MODULE_PARM_DESC(noaccel, "bool: disable acceleration");
3893 module_param(vram, int, 0);
3894 MODULE_PARM_DESC(vram, "int: override size of video ram");
3895 module_param(pll, int, 0);
3896 MODULE_PARM_DESC(pll, "int: override video clock");
3897 module_param(mclk, int, 0);
3898 MODULE_PARM_DESC(mclk, "int: override memory clock");
3899 module_param(xclk, int, 0);
3900 MODULE_PARM_DESC(xclk, "int: override accelerated engine clock");
3901 module_param(comp_sync, int, 0);
3902 MODULE_PARM_DESC(comp_sync,
3903 "Set composite sync signal to low (0) or high (1)");
3904 module_param(mode, charp, 0);
3905 MODULE_PARM_DESC(mode, "Specify resolution as \"<xres>x<yres>[-<bpp>][@<refresh>]\" ");
3906 #ifdef CONFIG_MTRR
3907 module_param(nomtrr, bool, 0);
3908 MODULE_PARM_DESC(nomtrr, "bool: disable use of MTRR registers");
3909 #endif
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree