xref: /linux/drivers/video/fbdev/aty/atyfb_base.c (revision 34dc1baba215b826e454b8d19e4f24adbeb7d00d)
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 #include <linux/aperture.h>
52 #include <linux/compat.h>
53 #include <linux/module.h>
54 #include <linux/moduleparam.h>
55 #include <linux/kernel.h>
56 #include <linux/errno.h>
57 #include <linux/string.h>
58 #include <linux/mm.h>
59 #include <linux/slab.h>
60 #include <linux/vmalloc.h>
61 #include <linux/delay.h>
62 #include <linux/compiler.h>
63 #include <linux/console.h>
64 #include <linux/fb.h>
65 #include <linux/init.h>
66 #include <linux/pci.h>
67 #include <linux/interrupt.h>
68 #include <linux/spinlock.h>
69 #include <linux/wait.h>
70 #include <linux/backlight.h>
71 #include <linux/reboot.h>
72 #include <linux/dmi.h>
73 
74 #include <asm/io.h>
75 #include <linux/uaccess.h>
76 
77 #include <video/mach64.h>
78 #include "atyfb.h"
79 #include "ati_ids.h"
80 
81 #ifdef __powerpc__
82 #include <asm/machdep.h>
83 #include "../macmodes.h"
84 #endif
85 #ifdef __sparc__
86 #include <asm/fbio.h>
87 #include <asm/oplib.h>
88 #include <asm/prom.h>
89 #endif
90 
91 #ifdef CONFIG_ADB_PMU
92 #include <linux/adb.h>
93 #include <linux/pmu.h>
94 #endif
95 #ifdef CONFIG_BOOTX_TEXT
96 #include <asm/btext.h>
97 #endif
98 #ifdef CONFIG_PMAC_BACKLIGHT
99 #include <asm/backlight.h>
100 #endif
101 
102 /*
103  * Debug flags.
104  */
105 #undef DEBUG
106 /*#define DEBUG*/
107 
108 /* Make sure n * PAGE_SIZE is protected at end of Aperture for GUI-regs */
109 /*  - must be large enough to catch all GUI-Regs   */
110 /*  - must be aligned to a PAGE boundary           */
111 #define GUI_RESERVE	(1 * PAGE_SIZE)
112 
113 /* FIXME: remove the FAIL definition */
114 #define FAIL(msg) do { \
115 	if (!(var->activate & FB_ACTIVATE_TEST)) \
116 		printk(KERN_CRIT "atyfb: " msg "\n"); \
117 	return -EINVAL; \
118 } while (0)
119 #define FAIL_MAX(msg, x, _max_) do { \
120 	if (x > _max_) { \
121 		if (!(var->activate & FB_ACTIVATE_TEST)) \
122 			printk(KERN_CRIT "atyfb: " msg " %x(%x)\n", x, _max_); \
123 		return -EINVAL; \
124 	} \
125 } while (0)
126 #ifdef DEBUG
127 #define DPRINTK(fmt, args...)	printk(KERN_DEBUG "atyfb: " fmt, ## args)
128 #else
129 #define DPRINTK(fmt, args...)	no_printk(fmt, ##args)
130 #endif
131 
132 #define PRINTKI(fmt, args...)	printk(KERN_INFO "atyfb: " fmt, ## args)
133 #define PRINTKE(fmt, args...)	printk(KERN_ERR "atyfb: " fmt, ## args)
134 
135 #if defined(CONFIG_PMAC_BACKLIGHT) || defined(CONFIG_FB_ATY_GENERIC_LCD) || \
136 defined(CONFIG_FB_ATY_BACKLIGHT) || defined (CONFIG_PPC_PMAC)
137 static const u32 lt_lcd_regs[] = {
138 	CNFG_PANEL_LG,
139 	LCD_GEN_CNTL_LG,
140 	DSTN_CONTROL_LG,
141 	HFB_PITCH_ADDR_LG,
142 	HORZ_STRETCHING_LG,
143 	VERT_STRETCHING_LG,
144 	0, /* EXT_VERT_STRETCH */
145 	LT_GIO_LG,
146 	POWER_MANAGEMENT_LG
147 };
148 
149 void aty_st_lcd(int index, u32 val, const struct atyfb_par *par)
150 {
151 	if (M64_HAS(LT_LCD_REGS)) {
152 		aty_st_le32(lt_lcd_regs[index], val, par);
153 	} else {
154 		unsigned long temp;
155 
156 		/* write addr byte */
157 		temp = aty_ld_le32(LCD_INDEX, par);
158 		aty_st_le32(LCD_INDEX, (temp & ~LCD_INDEX_MASK) | index, par);
159 		/* write the register value */
160 		aty_st_le32(LCD_DATA, val, par);
161 	}
162 }
163 
164 u32 aty_ld_lcd(int index, const struct atyfb_par *par)
165 {
166 	if (M64_HAS(LT_LCD_REGS)) {
167 		return aty_ld_le32(lt_lcd_regs[index], par);
168 	} else {
169 		unsigned long temp;
170 
171 		/* write addr byte */
172 		temp = aty_ld_le32(LCD_INDEX, par);
173 		aty_st_le32(LCD_INDEX, (temp & ~LCD_INDEX_MASK) | index, par);
174 		/* read the register value */
175 		return aty_ld_le32(LCD_DATA, par);
176 	}
177 }
178 #else /* defined(CONFIG_PMAC_BACKLIGHT) || defined(CONFIG_FB_ATY_BACKLIGHT) ||
179 	 defined(CONFIG_FB_ATY_GENERIC_LCD) || defined(CONFIG_PPC_PMAC) */
180 void aty_st_lcd(int index, u32 val, const struct atyfb_par *par)
181 { }
182 
183 u32 aty_ld_lcd(int index, const struct atyfb_par *par)
184 {
185 	return 0;
186 }
187 #endif /* defined(CONFIG_PMAC_BACKLIGHT) || defined(CONFIG_FB_ATY_BACKLIGHT) ||
188 	  defined (CONFIG_FB_ATY_GENERIC_LCD) || defined(CONFIG_PPC_PMAC) */
189 
190 #ifdef CONFIG_FB_ATY_GENERIC_LCD
191 /*
192  * ATIReduceRatio --
193  *
194  * Reduce a fraction by factoring out the largest common divider of the
195  * fraction's numerator and denominator.
196  */
197 static void ATIReduceRatio(int *Numerator, int *Denominator)
198 {
199 	int Multiplier, Divider, Remainder;
200 
201 	Multiplier = *Numerator;
202 	Divider = *Denominator;
203 
204 	while ((Remainder = Multiplier % Divider)) {
205 		Multiplier = Divider;
206 		Divider = Remainder;
207 	}
208 
209 	*Numerator /= Divider;
210 	*Denominator /= Divider;
211 }
212 #endif
213 /*
214  * The Hardware parameters for each card
215  */
216 
217 struct pci_mmap_map {
218 	unsigned long voff;
219 	unsigned long poff;
220 	unsigned long size;
221 	unsigned long prot_flag;
222 	unsigned long prot_mask;
223 };
224 
225 static const struct fb_fix_screeninfo atyfb_fix = {
226 	.id		= "ATY Mach64",
227 	.type		= FB_TYPE_PACKED_PIXELS,
228 	.visual		= FB_VISUAL_PSEUDOCOLOR,
229 	.xpanstep	= 8,
230 	.ypanstep	= 1,
231 };
232 
233 /*
234  * Frame buffer device API
235  */
236 
237 static int atyfb_open(struct fb_info *info, int user);
238 static int atyfb_release(struct fb_info *info, int user);
239 static int atyfb_check_var(struct fb_var_screeninfo *var,
240 			   struct fb_info *info);
241 static int atyfb_set_par(struct fb_info *info);
242 static int atyfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
243 			   u_int transp, struct fb_info *info);
244 static int atyfb_pan_display(struct fb_var_screeninfo *var,
245 			     struct fb_info *info);
246 static int atyfb_blank(int blank, struct fb_info *info);
247 static int atyfb_ioctl(struct fb_info *info, u_int cmd, u_long arg);
248 #ifdef CONFIG_COMPAT
249 static int atyfb_compat_ioctl(struct fb_info *info, u_int cmd, u_long arg)
250 {
251 	return atyfb_ioctl(info, cmd, (u_long)compat_ptr(arg));
252 }
253 #endif
254 
255 #ifdef __sparc__
256 static int atyfb_mmap(struct fb_info *info, struct vm_area_struct *vma);
257 #endif
258 static int atyfb_sync(struct fb_info *info);
259 
260 /*
261  * Internal routines
262  */
263 
264 static int aty_init(struct fb_info *info);
265 
266 static void aty_get_crtc(const struct atyfb_par *par, struct crtc *crtc);
267 
268 static void aty_set_crtc(const struct atyfb_par *par, const struct crtc *crtc);
269 static int aty_var_to_crtc(const struct fb_info *info,
270 			   const struct fb_var_screeninfo *var,
271 			   struct crtc *crtc);
272 static int aty_crtc_to_var(const struct crtc *crtc,
273 			   struct fb_var_screeninfo *var);
274 static void set_off_pitch(struct atyfb_par *par, const struct fb_info *info);
275 #ifdef CONFIG_PPC
276 static int read_aty_sense(const struct atyfb_par *par);
277 #endif
278 
279 static DEFINE_MUTEX(reboot_lock);
280 static struct fb_info *reboot_info;
281 
282 /*
283  * Interface used by the world
284  */
285 
286 static struct fb_var_screeninfo default_var = {
287 	/* 640x480, 60 Hz, Non-Interlaced (25.175 MHz dotclock) */
288 	640, 480, 640, 480, 0, 0, 8, 0,
289 	{0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
290 	0, 0, -1, -1, 0, 39722, 48, 16, 33, 10, 96, 2,
291 	0, FB_VMODE_NONINTERLACED
292 };
293 
294 static const struct fb_videomode defmode = {
295 	/* 640x480 @ 60 Hz, 31.5 kHz hsync */
296 	NULL, 60, 640, 480, 39721, 40, 24, 32, 11, 96, 2,
297 	0, FB_VMODE_NONINTERLACED
298 };
299 
300 static struct fb_ops atyfb_ops = {
301 	.owner		= THIS_MODULE,
302 	.fb_open	= atyfb_open,
303 	.fb_release	= atyfb_release,
304 	.fb_check_var	= atyfb_check_var,
305 	.fb_set_par	= atyfb_set_par,
306 	.fb_setcolreg	= atyfb_setcolreg,
307 	.fb_pan_display	= atyfb_pan_display,
308 	.fb_blank	= atyfb_blank,
309 	.fb_ioctl	= atyfb_ioctl,
310 #ifdef CONFIG_COMPAT
311 	.fb_compat_ioctl = atyfb_compat_ioctl,
312 #endif
313 	.fb_fillrect	= atyfb_fillrect,
314 	.fb_copyarea	= atyfb_copyarea,
315 	.fb_imageblit	= atyfb_imageblit,
316 #ifdef __sparc__
317 	.fb_mmap	= atyfb_mmap,
318 #endif
319 	.fb_sync	= atyfb_sync,
320 };
321 
322 static bool noaccel;
323 static bool nomtrr;
324 static int vram;
325 static int pll;
326 static int mclk;
327 static int xclk;
328 static int comp_sync = -1;
329 static char *mode;
330 static int backlight = IS_BUILTIN(CONFIG_PMAC_BACKLIGHT);
331 
332 #ifdef CONFIG_PPC
333 static int default_vmode = VMODE_CHOOSE;
334 static int default_cmode = CMODE_CHOOSE;
335 
336 module_param_named(vmode, default_vmode, int, 0);
337 MODULE_PARM_DESC(vmode, "int: video mode for mac");
338 module_param_named(cmode, default_cmode, int, 0);
339 MODULE_PARM_DESC(cmode, "int: color mode for mac");
340 #endif
341 
342 #ifdef CONFIG_ATARI
343 static unsigned int mach64_count = 0;
344 static unsigned long phys_vmembase[FB_MAX] = { 0, };
345 static unsigned long phys_size[FB_MAX] = { 0, };
346 static unsigned long phys_guiregbase[FB_MAX] = { 0, };
347 #endif
348 
349 /* top -> down is an evolution of mach64 chipset, any corrections? */
350 #define ATI_CHIP_88800GX   (M64F_GX)
351 #define ATI_CHIP_88800CX   (M64F_GX)
352 
353 #define ATI_CHIP_264CT     (M64F_CT | M64F_INTEGRATED | M64F_CT_BUS | M64F_MAGIC_FIFO)
354 #define ATI_CHIP_264ET     (M64F_CT | M64F_INTEGRATED | M64F_CT_BUS | M64F_MAGIC_FIFO)
355 
356 #define ATI_CHIP_264VT     (M64F_VT | M64F_INTEGRATED | M64F_VT_BUS | M64F_MAGIC_FIFO)
357 #define ATI_CHIP_264GT     (M64F_GT | M64F_INTEGRATED               | M64F_MAGIC_FIFO | M64F_EXTRA_BRIGHT)
358 
359 #define ATI_CHIP_264VTB    (M64F_VT | M64F_INTEGRATED | M64F_VT_BUS | M64F_GTB_DSP)
360 #define ATI_CHIP_264VT3    (M64F_VT | M64F_INTEGRATED | M64F_VT_BUS | M64F_GTB_DSP | M64F_SDRAM_MAGIC_PLL)
361 #define ATI_CHIP_264VT4    (M64F_VT | M64F_INTEGRATED               | M64F_GTB_DSP)
362 
363 /* FIXME what is this chip? */
364 #define ATI_CHIP_264LT     (M64F_GT | M64F_INTEGRATED               | M64F_GTB_DSP)
365 
366 /* make sets shorter */
367 #define ATI_MODERN_SET     (M64F_GT | M64F_INTEGRATED               | M64F_GTB_DSP | M64F_EXTRA_BRIGHT)
368 
369 #define ATI_CHIP_264GTB    (ATI_MODERN_SET | M64F_SDRAM_MAGIC_PLL)
370 /*#define ATI_CHIP_264GTDVD  ?*/
371 #define ATI_CHIP_264LTG    (ATI_MODERN_SET | M64F_SDRAM_MAGIC_PLL)
372 
373 #define ATI_CHIP_264GT2C   (ATI_MODERN_SET | M64F_SDRAM_MAGIC_PLL | M64F_HW_TRIPLE)
374 #define ATI_CHIP_264GTPRO  (ATI_MODERN_SET | M64F_SDRAM_MAGIC_PLL | M64F_HW_TRIPLE | M64F_FIFO_32 | M64F_RESET_3D)
375 #define ATI_CHIP_264LTPRO  (ATI_MODERN_SET | M64F_HW_TRIPLE | M64F_FIFO_32 | M64F_RESET_3D)
376 
377 #define ATI_CHIP_264XL     (ATI_MODERN_SET | M64F_HW_TRIPLE | M64F_FIFO_32 | M64F_RESET_3D | M64F_XL_DLL | M64F_MFB_FORCE_4 | M64F_XL_MEM)
378 #define ATI_CHIP_MOBILITY  (ATI_MODERN_SET | M64F_HW_TRIPLE | M64F_FIFO_32 | M64F_RESET_3D | M64F_XL_DLL | M64F_MFB_FORCE_4 | M64F_XL_MEM | M64F_MOBIL_BUS)
379 
380 static struct {
381 	u16 pci_id;
382 	const char *name;
383 	int pll, mclk, xclk, ecp_max;
384 	u32 features;
385 } aty_chips[] = {
386 #ifdef CONFIG_FB_ATY_GX
387 	/* Mach64 GX */
388 	{ PCI_CHIP_MACH64GX, "ATI888GX00 (Mach64 GX)", 135, 50, 50, 0, ATI_CHIP_88800GX },
389 	{ PCI_CHIP_MACH64CX, "ATI888CX00 (Mach64 CX)", 135, 50, 50, 0, ATI_CHIP_88800CX },
390 #endif /* CONFIG_FB_ATY_GX */
391 
392 #ifdef CONFIG_FB_ATY_CT
393 	{ PCI_CHIP_MACH64CT, "ATI264CT (Mach64 CT)", 135, 60, 60, 0, ATI_CHIP_264CT },
394 	{ PCI_CHIP_MACH64ET, "ATI264ET (Mach64 ET)", 135, 60, 60, 0, ATI_CHIP_264ET },
395 
396 	/* FIXME what is this chip? */
397 	{ PCI_CHIP_MACH64LT, "ATI264LT (Mach64 LT)", 135, 63, 63, 0, ATI_CHIP_264LT },
398 
399 	{ PCI_CHIP_MACH64VT, "ATI264VT (Mach64 VT)", 170, 67, 67, 80, ATI_CHIP_264VT },
400 	{ PCI_CHIP_MACH64GT, "3D RAGE (Mach64 GT)", 135, 63, 63, 80, ATI_CHIP_264GT },
401 
402 	{ PCI_CHIP_MACH64VU, "ATI264VT3 (Mach64 VU)", 200, 67, 67, 80, ATI_CHIP_264VT3 },
403 	{ PCI_CHIP_MACH64GU, "3D RAGE II+ (Mach64 GU)", 200, 67, 67, 100, ATI_CHIP_264GTB },
404 
405 	{ PCI_CHIP_MACH64LG, "3D RAGE LT (Mach64 LG)", 230, 63, 63, 100, ATI_CHIP_264LTG | M64F_LT_LCD_REGS | M64F_G3_PB_1024x768 },
406 
407 	{ PCI_CHIP_MACH64VV, "ATI264VT4 (Mach64 VV)", 230, 83, 83, 100, ATI_CHIP_264VT4 },
408 
409 	{ PCI_CHIP_MACH64GV, "3D RAGE IIC (Mach64 GV, PCI)", 230, 83, 83, 100, ATI_CHIP_264GT2C },
410 	{ PCI_CHIP_MACH64GW, "3D RAGE IIC (Mach64 GW, AGP)", 230, 83, 83, 100, ATI_CHIP_264GT2C },
411 	{ PCI_CHIP_MACH64GY, "3D RAGE IIC (Mach64 GY, PCI)", 230, 83, 83, 100, ATI_CHIP_264GT2C },
412 	{ PCI_CHIP_MACH64GZ, "3D RAGE IIC (Mach64 GZ, AGP)", 230, 83, 83, 100, ATI_CHIP_264GT2C },
413 
414 	{ PCI_CHIP_MACH64GB, "3D RAGE PRO (Mach64 GB, BGA, AGP)", 230, 100, 100, 125, ATI_CHIP_264GTPRO },
415 	{ PCI_CHIP_MACH64GD, "3D RAGE PRO (Mach64 GD, BGA, AGP 1x)", 230, 100, 100, 125, ATI_CHIP_264GTPRO },
416 	{ PCI_CHIP_MACH64GI, "3D RAGE PRO (Mach64 GI, BGA, PCI)", 230, 100, 100, 125, ATI_CHIP_264GTPRO | M64F_MAGIC_VRAM_SIZE },
417 	{ PCI_CHIP_MACH64GP, "3D RAGE PRO (Mach64 GP, PQFP, PCI)", 230, 100, 100, 125, ATI_CHIP_264GTPRO },
418 	{ PCI_CHIP_MACH64GQ, "3D RAGE PRO (Mach64 GQ, PQFP, PCI, limited 3D)", 230, 100, 100, 125, ATI_CHIP_264GTPRO },
419 
420 	{ PCI_CHIP_MACH64LB, "3D RAGE LT PRO (Mach64 LB, AGP)", 236, 75, 100, 135, ATI_CHIP_264LTPRO },
421 	{ PCI_CHIP_MACH64LD, "3D RAGE LT PRO (Mach64 LD, AGP)", 230, 100, 100, 135, ATI_CHIP_264LTPRO },
422 	{ 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 },
423 	{ PCI_CHIP_MACH64LP, "3D RAGE LT PRO (Mach64 LP, PCI)", 230, 100, 100, 135, ATI_CHIP_264LTPRO | M64F_G3_PB_1024x768 },
424 	{ PCI_CHIP_MACH64LQ, "3D RAGE LT PRO (Mach64 LQ, PCI)", 230, 100, 100, 135, ATI_CHIP_264LTPRO },
425 
426 	{ PCI_CHIP_MACH64GM, "3D RAGE XL (Mach64 GM, AGP 2x)", 230, 83, 63, 135, ATI_CHIP_264XL },
427 	{ PCI_CHIP_MACH64GN, "3D RAGE XC (Mach64 GN, AGP 2x)", 230, 83, 63, 135, ATI_CHIP_264XL },
428 	{ PCI_CHIP_MACH64GO, "3D RAGE XL (Mach64 GO, PCI-66)", 230, 83, 63, 135, ATI_CHIP_264XL },
429 	{ PCI_CHIP_MACH64GL, "3D RAGE XC (Mach64 GL, PCI-66)", 230, 83, 63, 135, ATI_CHIP_264XL },
430 	{ PCI_CHIP_MACH64GR, "3D RAGE XL (Mach64 GR, PCI-33)", 230, 83, 63, 135, ATI_CHIP_264XL | M64F_SDRAM_MAGIC_PLL },
431 	{ PCI_CHIP_MACH64GS, "3D RAGE XC (Mach64 GS, PCI-33)", 230, 83, 63, 135, ATI_CHIP_264XL },
432 
433 	{ PCI_CHIP_MACH64LM, "3D RAGE Mobility P/M (Mach64 LM, AGP 2x)", 230, 83, 125, 135, ATI_CHIP_MOBILITY },
434 	{ PCI_CHIP_MACH64LN, "3D RAGE Mobility L (Mach64 LN, AGP 2x)", 230, 83, 125, 135, ATI_CHIP_MOBILITY },
435 	{ PCI_CHIP_MACH64LR, "3D RAGE Mobility P/M (Mach64 LR, PCI)", 230, 83, 125, 135, ATI_CHIP_MOBILITY },
436 	{ PCI_CHIP_MACH64LS, "3D RAGE Mobility L (Mach64 LS, PCI)", 230, 83, 125, 135, ATI_CHIP_MOBILITY },
437 #endif /* CONFIG_FB_ATY_CT */
438 };
439 
440 /*
441  * Last page of 8 MB (4 MB on ISA) aperture is MMIO,
442  * unless the auxiliary register aperture is used.
443  */
444 static void aty_fudge_framebuffer_len(struct fb_info *info)
445 {
446 	struct atyfb_par *par = (struct atyfb_par *) info->par;
447 
448 	if (!par->aux_start &&
449 	    (info->fix.smem_len == 0x800000 ||
450 	     (par->bus_type == ISA && info->fix.smem_len == 0x400000)))
451 		info->fix.smem_len -= GUI_RESERVE;
452 }
453 
454 static int correct_chipset(struct atyfb_par *par)
455 {
456 	u8 rev;
457 	u16 type;
458 	u32 chip_id;
459 	const char *name;
460 	int i;
461 
462 	for (i = (int)ARRAY_SIZE(aty_chips) - 1; i >= 0; i--)
463 		if (par->pci_id == aty_chips[i].pci_id)
464 			break;
465 
466 	if (i < 0)
467 		return -ENODEV;
468 
469 	name = aty_chips[i].name;
470 	par->pll_limits.pll_max = aty_chips[i].pll;
471 	par->pll_limits.mclk = aty_chips[i].mclk;
472 	par->pll_limits.xclk = aty_chips[i].xclk;
473 	par->pll_limits.ecp_max = aty_chips[i].ecp_max;
474 	par->features = aty_chips[i].features;
475 
476 	chip_id = aty_ld_le32(CNFG_CHIP_ID, par);
477 	type = chip_id & CFG_CHIP_TYPE;
478 	rev = (chip_id & CFG_CHIP_REV) >> 24;
479 
480 	switch (par->pci_id) {
481 #ifdef CONFIG_FB_ATY_GX
482 	case PCI_CHIP_MACH64GX:
483 		if (type != 0x00d7)
484 			return -ENODEV;
485 		break;
486 	case PCI_CHIP_MACH64CX:
487 		if (type != 0x0057)
488 			return -ENODEV;
489 		break;
490 #endif
491 #ifdef CONFIG_FB_ATY_CT
492 	case PCI_CHIP_MACH64VT:
493 		switch (rev & 0x07) {
494 		case 0x00:
495 			switch (rev & 0xc0) {
496 			case 0x00:
497 				name = "ATI264VT (A3) (Mach64 VT)";
498 				par->pll_limits.pll_max = 170;
499 				par->pll_limits.mclk = 67;
500 				par->pll_limits.xclk = 67;
501 				par->pll_limits.ecp_max = 80;
502 				par->features = ATI_CHIP_264VT;
503 				break;
504 			case 0x40:
505 				name = "ATI264VT2 (A4) (Mach64 VT)";
506 				par->pll_limits.pll_max = 200;
507 				par->pll_limits.mclk = 67;
508 				par->pll_limits.xclk = 67;
509 				par->pll_limits.ecp_max = 80;
510 				par->features = ATI_CHIP_264VT | M64F_MAGIC_POSTDIV;
511 				break;
512 			}
513 			break;
514 		case 0x01:
515 			name = "ATI264VT3 (B1) (Mach64 VT)";
516 			par->pll_limits.pll_max = 200;
517 			par->pll_limits.mclk = 67;
518 			par->pll_limits.xclk = 67;
519 			par->pll_limits.ecp_max = 80;
520 			par->features = ATI_CHIP_264VTB;
521 			break;
522 		case 0x02:
523 			name = "ATI264VT3 (B2) (Mach64 VT)";
524 			par->pll_limits.pll_max = 200;
525 			par->pll_limits.mclk = 67;
526 			par->pll_limits.xclk = 67;
527 			par->pll_limits.ecp_max = 80;
528 			par->features = ATI_CHIP_264VT3;
529 			break;
530 		}
531 		break;
532 	case PCI_CHIP_MACH64GT:
533 		switch (rev & 0x07) {
534 		case 0x01:
535 			name = "3D RAGE II (Mach64 GT)";
536 			par->pll_limits.pll_max = 170;
537 			par->pll_limits.mclk = 67;
538 			par->pll_limits.xclk = 67;
539 			par->pll_limits.ecp_max = 80;
540 			par->features = ATI_CHIP_264GTB;
541 			break;
542 		case 0x02:
543 			name = "3D RAGE II+ (Mach64 GT)";
544 			par->pll_limits.pll_max = 200;
545 			par->pll_limits.mclk = 67;
546 			par->pll_limits.xclk = 67;
547 			par->pll_limits.ecp_max = 100;
548 			par->features = ATI_CHIP_264GTB;
549 			break;
550 		}
551 		break;
552 #endif
553 	}
554 
555 	PRINTKI("%s [0x%04x rev 0x%02x]\n", name, type, rev);
556 	return 0;
557 }
558 
559 static char ram_dram[] __maybe_unused = "DRAM";
560 static char ram_resv[] __maybe_unused = "RESV";
561 #ifdef CONFIG_FB_ATY_GX
562 static char ram_vram[] = "VRAM";
563 #endif /* CONFIG_FB_ATY_GX */
564 #ifdef CONFIG_FB_ATY_CT
565 static char ram_edo[] = "EDO";
566 static char ram_sdram[] = "SDRAM (1:1)";
567 static char ram_sgram[] = "SGRAM (1:1)";
568 static char ram_sdram32[] = "SDRAM (2:1) (32-bit)";
569 static char ram_wram[] = "WRAM";
570 static char ram_off[] = "OFF";
571 #endif /* CONFIG_FB_ATY_CT */
572 
573 
574 #ifdef CONFIG_FB_ATY_GX
575 static char *aty_gx_ram[8] = {
576 	ram_dram, ram_vram, ram_vram, ram_dram,
577 	ram_dram, ram_vram, ram_vram, ram_resv
578 };
579 #endif /* CONFIG_FB_ATY_GX */
580 
581 #ifdef CONFIG_FB_ATY_CT
582 static char *aty_ct_ram[8] = {
583 	ram_off, ram_dram, ram_edo, ram_edo,
584 	ram_sdram, ram_sgram, ram_wram, ram_resv
585 };
586 static char *aty_xl_ram[8] = {
587 	ram_off, ram_dram, ram_edo, ram_edo,
588 	ram_sdram, ram_sgram, ram_sdram32, ram_resv
589 };
590 #endif /* CONFIG_FB_ATY_CT */
591 
592 static u32 atyfb_get_pixclock(struct fb_var_screeninfo *var,
593 			      struct atyfb_par *par)
594 {
595 	u32 pixclock = var->pixclock;
596 #ifdef CONFIG_FB_ATY_GENERIC_LCD
597 	u32 lcd_on_off;
598 	par->pll.ct.xres = 0;
599 	if (par->lcd_table != 0) {
600 		lcd_on_off = aty_ld_lcd(LCD_GEN_CNTL, par);
601 		if (lcd_on_off & LCD_ON) {
602 			par->pll.ct.xres = var->xres;
603 			pixclock = par->lcd_pixclock;
604 		}
605 	}
606 #endif
607 	return pixclock;
608 }
609 
610 #if defined(CONFIG_PPC)
611 
612 /*
613  * Apple monitor sense
614  */
615 
616 static int read_aty_sense(const struct atyfb_par *par)
617 {
618 	int sense, i;
619 
620 	aty_st_le32(GP_IO, 0x31003100, par); /* drive outputs high */
621 	__delay(200);
622 	aty_st_le32(GP_IO, 0, par); /* turn off outputs */
623 	__delay(2000);
624 	i = aty_ld_le32(GP_IO, par); /* get primary sense value */
625 	sense = ((i & 0x3000) >> 3) | (i & 0x100);
626 
627 	/* drive each sense line low in turn and collect the other 2 */
628 	aty_st_le32(GP_IO, 0x20000000, par); /* drive A low */
629 	__delay(2000);
630 	i = aty_ld_le32(GP_IO, par);
631 	sense |= ((i & 0x1000) >> 7) | ((i & 0x100) >> 4);
632 	aty_st_le32(GP_IO, 0x20002000, par); /* drive A high again */
633 	__delay(200);
634 
635 	aty_st_le32(GP_IO, 0x10000000, par); /* drive B low */
636 	__delay(2000);
637 	i = aty_ld_le32(GP_IO, par);
638 	sense |= ((i & 0x2000) >> 10) | ((i & 0x100) >> 6);
639 	aty_st_le32(GP_IO, 0x10001000, par); /* drive B high again */
640 	__delay(200);
641 
642 	aty_st_le32(GP_IO, 0x01000000, par); /* drive C low */
643 	__delay(2000);
644 	sense |= (aty_ld_le32(GP_IO, par) & 0x3000) >> 12;
645 	aty_st_le32(GP_IO, 0, par); /* turn off outputs */
646 	return sense;
647 }
648 
649 #endif /* defined(CONFIG_PPC) */
650 
651 /* ------------------------------------------------------------------------- */
652 
653 /*
654  * CRTC programming
655  */
656 
657 static void aty_get_crtc(const struct atyfb_par *par, struct crtc *crtc)
658 {
659 #ifdef CONFIG_FB_ATY_GENERIC_LCD
660 	if (par->lcd_table != 0) {
661 		if (!M64_HAS(LT_LCD_REGS)) {
662 			crtc->lcd_index = aty_ld_le32(LCD_INDEX, par);
663 			aty_st_le32(LCD_INDEX, crtc->lcd_index, par);
664 		}
665 		crtc->lcd_config_panel = aty_ld_lcd(CNFG_PANEL, par);
666 		crtc->lcd_gen_cntl = aty_ld_lcd(LCD_GEN_CNTL, par);
667 
668 
669 		/* switch to non shadow registers */
670 		aty_st_lcd(LCD_GEN_CNTL, crtc->lcd_gen_cntl &
671 			   ~(CRTC_RW_SELECT | SHADOW_EN | SHADOW_RW_EN), par);
672 
673 		/* save stretching */
674 		crtc->horz_stretching = aty_ld_lcd(HORZ_STRETCHING, par);
675 		crtc->vert_stretching = aty_ld_lcd(VERT_STRETCHING, par);
676 		if (!M64_HAS(LT_LCD_REGS))
677 			crtc->ext_vert_stretch = aty_ld_lcd(EXT_VERT_STRETCH, par);
678 	}
679 #endif
680 	crtc->h_tot_disp = aty_ld_le32(CRTC_H_TOTAL_DISP, par);
681 	crtc->h_sync_strt_wid = aty_ld_le32(CRTC_H_SYNC_STRT_WID, par);
682 	crtc->v_tot_disp = aty_ld_le32(CRTC_V_TOTAL_DISP, par);
683 	crtc->v_sync_strt_wid = aty_ld_le32(CRTC_V_SYNC_STRT_WID, par);
684 	crtc->vline_crnt_vline = aty_ld_le32(CRTC_VLINE_CRNT_VLINE, par);
685 	crtc->off_pitch = aty_ld_le32(CRTC_OFF_PITCH, par);
686 	crtc->gen_cntl = aty_ld_le32(CRTC_GEN_CNTL, par);
687 
688 #ifdef CONFIG_FB_ATY_GENERIC_LCD
689 	if (par->lcd_table != 0) {
690 		/* switch to shadow registers */
691 		aty_st_lcd(LCD_GEN_CNTL, (crtc->lcd_gen_cntl & ~CRTC_RW_SELECT) |
692 			   SHADOW_EN | SHADOW_RW_EN, par);
693 
694 		crtc->shadow_h_tot_disp = aty_ld_le32(CRTC_H_TOTAL_DISP, par);
695 		crtc->shadow_h_sync_strt_wid = aty_ld_le32(CRTC_H_SYNC_STRT_WID, par);
696 		crtc->shadow_v_tot_disp = aty_ld_le32(CRTC_V_TOTAL_DISP, par);
697 		crtc->shadow_v_sync_strt_wid = aty_ld_le32(CRTC_V_SYNC_STRT_WID, par);
698 
699 		aty_st_le32(LCD_GEN_CNTL, crtc->lcd_gen_cntl, par);
700 	}
701 #endif /* CONFIG_FB_ATY_GENERIC_LCD */
702 }
703 
704 static void aty_set_crtc(const struct atyfb_par *par, const struct crtc *crtc)
705 {
706 #ifdef CONFIG_FB_ATY_GENERIC_LCD
707 	if (par->lcd_table != 0) {
708 		/* stop CRTC */
709 		aty_st_le32(CRTC_GEN_CNTL, crtc->gen_cntl &
710 			    ~(CRTC_EXT_DISP_EN | CRTC_EN), par);
711 
712 		/* update non-shadow registers first */
713 		aty_st_lcd(CNFG_PANEL, crtc->lcd_config_panel, par);
714 		aty_st_lcd(LCD_GEN_CNTL, crtc->lcd_gen_cntl &
715 			   ~(CRTC_RW_SELECT | SHADOW_EN | SHADOW_RW_EN), par);
716 
717 		/* temporarily disable stretching */
718 		aty_st_lcd(HORZ_STRETCHING, crtc->horz_stretching &
719 			   ~(HORZ_STRETCH_MODE | HORZ_STRETCH_EN), par);
720 		aty_st_lcd(VERT_STRETCHING, crtc->vert_stretching &
721 			   ~(VERT_STRETCH_RATIO1 | VERT_STRETCH_RATIO2 |
722 			     VERT_STRETCH_USE0 | VERT_STRETCH_EN), par);
723 	}
724 #endif
725 	/* turn off CRT */
726 	aty_st_le32(CRTC_GEN_CNTL, crtc->gen_cntl & ~CRTC_EN, par);
727 
728 	DPRINTK("setting up CRTC\n");
729 	DPRINTK("set primary CRT to %ix%i %c%c composite %c\n",
730 		((((crtc->h_tot_disp >> 16) & 0xff) + 1) << 3),
731 		(((crtc->v_tot_disp >> 16) & 0x7ff) + 1),
732 		(crtc->h_sync_strt_wid & 0x200000) ? 'N' : 'P',
733 		(crtc->v_sync_strt_wid & 0x200000) ? 'N' : 'P',
734 		(crtc->gen_cntl & CRTC_CSYNC_EN) ? 'P' : 'N');
735 
736 	DPRINTK("CRTC_H_TOTAL_DISP: %x\n", crtc->h_tot_disp);
737 	DPRINTK("CRTC_H_SYNC_STRT_WID: %x\n", crtc->h_sync_strt_wid);
738 	DPRINTK("CRTC_V_TOTAL_DISP: %x\n", crtc->v_tot_disp);
739 	DPRINTK("CRTC_V_SYNC_STRT_WID: %x\n", crtc->v_sync_strt_wid);
740 	DPRINTK("CRTC_OFF_PITCH: %x\n", crtc->off_pitch);
741 	DPRINTK("CRTC_VLINE_CRNT_VLINE: %x\n", crtc->vline_crnt_vline);
742 	DPRINTK("CRTC_GEN_CNTL: %x\n", crtc->gen_cntl);
743 
744 	aty_st_le32(CRTC_H_TOTAL_DISP, crtc->h_tot_disp, par);
745 	aty_st_le32(CRTC_H_SYNC_STRT_WID, crtc->h_sync_strt_wid, par);
746 	aty_st_le32(CRTC_V_TOTAL_DISP, crtc->v_tot_disp, par);
747 	aty_st_le32(CRTC_V_SYNC_STRT_WID, crtc->v_sync_strt_wid, par);
748 	aty_st_le32(CRTC_OFF_PITCH, crtc->off_pitch, par);
749 	aty_st_le32(CRTC_VLINE_CRNT_VLINE, crtc->vline_crnt_vline, par);
750 
751 	aty_st_le32(CRTC_GEN_CNTL, crtc->gen_cntl, par);
752 #if 0
753 	FIXME
754 	if (par->accel_flags & FB_ACCELF_TEXT)
755 		aty_init_engine(par, info);
756 #endif
757 #ifdef CONFIG_FB_ATY_GENERIC_LCD
758 	/* after setting the CRTC registers we should set the LCD registers. */
759 	if (par->lcd_table != 0) {
760 		/* switch to shadow registers */
761 		aty_st_lcd(LCD_GEN_CNTL, (crtc->lcd_gen_cntl & ~CRTC_RW_SELECT) |
762 			   SHADOW_EN | SHADOW_RW_EN, par);
763 
764 		DPRINTK("set shadow CRT to %ix%i %c%c\n",
765 			((((crtc->shadow_h_tot_disp >> 16) & 0xff) + 1) << 3),
766 			(((crtc->shadow_v_tot_disp >> 16) & 0x7ff) + 1),
767 			(crtc->shadow_h_sync_strt_wid & 0x200000) ? 'N' : 'P',
768 			(crtc->shadow_v_sync_strt_wid & 0x200000) ? 'N' : 'P');
769 
770 		DPRINTK("SHADOW CRTC_H_TOTAL_DISP: %x\n",
771 			crtc->shadow_h_tot_disp);
772 		DPRINTK("SHADOW CRTC_H_SYNC_STRT_WID: %x\n",
773 			crtc->shadow_h_sync_strt_wid);
774 		DPRINTK("SHADOW CRTC_V_TOTAL_DISP: %x\n",
775 			crtc->shadow_v_tot_disp);
776 		DPRINTK("SHADOW CRTC_V_SYNC_STRT_WID: %x\n",
777 			crtc->shadow_v_sync_strt_wid);
778 
779 		aty_st_le32(CRTC_H_TOTAL_DISP, crtc->shadow_h_tot_disp, par);
780 		aty_st_le32(CRTC_H_SYNC_STRT_WID, crtc->shadow_h_sync_strt_wid, par);
781 		aty_st_le32(CRTC_V_TOTAL_DISP, crtc->shadow_v_tot_disp, par);
782 		aty_st_le32(CRTC_V_SYNC_STRT_WID, crtc->shadow_v_sync_strt_wid, par);
783 
784 		/* restore CRTC selection & shadow state and enable stretching */
785 		DPRINTK("LCD_GEN_CNTL: %x\n", crtc->lcd_gen_cntl);
786 		DPRINTK("HORZ_STRETCHING: %x\n", crtc->horz_stretching);
787 		DPRINTK("VERT_STRETCHING: %x\n", crtc->vert_stretching);
788 		if (!M64_HAS(LT_LCD_REGS))
789 			DPRINTK("EXT_VERT_STRETCH: %x\n", crtc->ext_vert_stretch);
790 
791 		aty_st_lcd(LCD_GEN_CNTL, crtc->lcd_gen_cntl, par);
792 		aty_st_lcd(HORZ_STRETCHING, crtc->horz_stretching, par);
793 		aty_st_lcd(VERT_STRETCHING, crtc->vert_stretching, par);
794 		if (!M64_HAS(LT_LCD_REGS)) {
795 			aty_st_lcd(EXT_VERT_STRETCH, crtc->ext_vert_stretch, par);
796 			aty_ld_le32(LCD_INDEX, par);
797 			aty_st_le32(LCD_INDEX, crtc->lcd_index, par);
798 		}
799 	}
800 #endif /* CONFIG_FB_ATY_GENERIC_LCD */
801 }
802 
803 static u32 calc_line_length(struct atyfb_par *par, u32 vxres, u32 bpp)
804 {
805 	u32 line_length = vxres * bpp / 8;
806 
807 	if (par->ram_type == SGRAM ||
808 	    (!M64_HAS(XL_MEM) && par->ram_type == WRAM))
809 		line_length = (line_length + 63) & ~63;
810 
811 	return line_length;
812 }
813 
814 static int aty_var_to_crtc(const struct fb_info *info,
815 			   const struct fb_var_screeninfo *var,
816 			   struct crtc *crtc)
817 {
818 	struct atyfb_par *par = (struct atyfb_par *) info->par;
819 	u32 xres, yres, vxres, vyres, xoffset, yoffset, bpp;
820 	u32 sync, vmode;
821 	u32 h_total, h_disp, h_sync_strt, h_sync_end, h_sync_dly, h_sync_wid, h_sync_pol;
822 	u32 v_total, v_disp, v_sync_strt, v_sync_end, v_sync_wid, v_sync_pol, c_sync;
823 	u32 pix_width, dp_pix_width, dp_chain_mask;
824 	u32 line_length;
825 
826 	/* input */
827 	xres = (var->xres + 7) & ~7;
828 	yres = var->yres;
829 	vxres = (var->xres_virtual + 7) & ~7;
830 	vyres = var->yres_virtual;
831 	xoffset = (var->xoffset + 7) & ~7;
832 	yoffset = var->yoffset;
833 	bpp = var->bits_per_pixel;
834 	if (bpp == 16)
835 		bpp = (var->green.length == 5) ? 15 : 16;
836 	sync = var->sync;
837 	vmode = var->vmode;
838 
839 	/* convert (and round up) and validate */
840 	if (vxres < xres + xoffset)
841 		vxres = xres + xoffset;
842 	h_disp = xres;
843 
844 	if (vyres < yres + yoffset)
845 		vyres = yres + yoffset;
846 	v_disp = yres;
847 
848 	if (bpp <= 8) {
849 		bpp = 8;
850 		pix_width = CRTC_PIX_WIDTH_8BPP;
851 		dp_pix_width = HOST_8BPP | SRC_8BPP | DST_8BPP |
852 			BYTE_ORDER_LSB_TO_MSB;
853 		dp_chain_mask = DP_CHAIN_8BPP;
854 	} else if (bpp <= 15) {
855 		bpp = 16;
856 		pix_width = CRTC_PIX_WIDTH_15BPP;
857 		dp_pix_width = HOST_15BPP | SRC_15BPP | DST_15BPP |
858 			BYTE_ORDER_LSB_TO_MSB;
859 		dp_chain_mask = DP_CHAIN_15BPP;
860 	} else if (bpp <= 16) {
861 		bpp = 16;
862 		pix_width = CRTC_PIX_WIDTH_16BPP;
863 		dp_pix_width = HOST_16BPP | SRC_16BPP | DST_16BPP |
864 			BYTE_ORDER_LSB_TO_MSB;
865 		dp_chain_mask = DP_CHAIN_16BPP;
866 	} else if (bpp <= 24 && M64_HAS(INTEGRATED)) {
867 		bpp = 24;
868 		pix_width = CRTC_PIX_WIDTH_24BPP;
869 		dp_pix_width = HOST_8BPP | SRC_8BPP | DST_8BPP |
870 			BYTE_ORDER_LSB_TO_MSB;
871 		dp_chain_mask = DP_CHAIN_24BPP;
872 	} else if (bpp <= 32) {
873 		bpp = 32;
874 		pix_width = CRTC_PIX_WIDTH_32BPP;
875 		dp_pix_width = HOST_32BPP | SRC_32BPP | DST_32BPP |
876 			BYTE_ORDER_LSB_TO_MSB;
877 		dp_chain_mask = DP_CHAIN_32BPP;
878 	} else
879 		FAIL("invalid bpp");
880 
881 	line_length = calc_line_length(par, vxres, bpp);
882 
883 	if (vyres * line_length > info->fix.smem_len)
884 		FAIL("not enough video RAM");
885 
886 	h_sync_pol = sync & FB_SYNC_HOR_HIGH_ACT ? 0 : 1;
887 	v_sync_pol = sync & FB_SYNC_VERT_HIGH_ACT ? 0 : 1;
888 
889 	if ((xres > 1920) || (yres > 1200)) {
890 		FAIL("MACH64 chips are designed for max 1920x1200\n"
891 		     "select another resolution.");
892 	}
893 	h_sync_strt = h_disp + var->right_margin;
894 	h_sync_end = h_sync_strt + var->hsync_len;
895 	h_sync_dly  = var->right_margin & 7;
896 	h_total = h_sync_end + h_sync_dly + var->left_margin;
897 
898 	v_sync_strt = v_disp + var->lower_margin;
899 	v_sync_end = v_sync_strt + var->vsync_len;
900 	v_total = v_sync_end + var->upper_margin;
901 
902 #ifdef CONFIG_FB_ATY_GENERIC_LCD
903 	if (par->lcd_table != 0) {
904 		if (!M64_HAS(LT_LCD_REGS)) {
905 			u32 lcd_index = aty_ld_le32(LCD_INDEX, par);
906 			crtc->lcd_index = lcd_index &
907 				~(LCD_INDEX_MASK | LCD_DISPLAY_DIS |
908 				  LCD_SRC_SEL | CRTC2_DISPLAY_DIS);
909 			aty_st_le32(LCD_INDEX, lcd_index, par);
910 		}
911 
912 		if (!M64_HAS(MOBIL_BUS))
913 			crtc->lcd_index |= CRTC2_DISPLAY_DIS;
914 
915 		crtc->lcd_config_panel = aty_ld_lcd(CNFG_PANEL, par) | 0x4000;
916 		crtc->lcd_gen_cntl = aty_ld_lcd(LCD_GEN_CNTL, par) & ~CRTC_RW_SELECT;
917 
918 		crtc->lcd_gen_cntl &=
919 			~(HORZ_DIVBY2_EN | DIS_HOR_CRT_DIVBY2 | TVCLK_PM_EN |
920 			/*VCLK_DAC_PM_EN | USE_SHADOWED_VEND |*/
921 			USE_SHADOWED_ROWCUR | SHADOW_EN | SHADOW_RW_EN);
922 		crtc->lcd_gen_cntl |= DONT_SHADOW_VPAR | LOCK_8DOT;
923 
924 		if ((crtc->lcd_gen_cntl & LCD_ON) &&
925 		    ((xres > par->lcd_width) || (yres > par->lcd_height))) {
926 			/*
927 			 * We cannot display the mode on the LCD. If the CRT is
928 			 * enabled we can turn off the LCD.
929 			 * If the CRT is off, it isn't a good idea to switch it
930 			 * on; we don't know if one is connected. So it's better
931 			 * to fail then.
932 			 */
933 			if (crtc->lcd_gen_cntl & CRT_ON) {
934 				if (!(var->activate & FB_ACTIVATE_TEST))
935 					PRINTKI("Disable LCD panel, because video mode does not fit.\n");
936 				crtc->lcd_gen_cntl &= ~LCD_ON;
937 				/*aty_st_lcd(LCD_GEN_CNTL, crtc->lcd_gen_cntl, par);*/
938 			} else {
939 				if (!(var->activate & FB_ACTIVATE_TEST))
940 					PRINTKE("Video mode exceeds size of LCD panel.\nConnect this computer to a conventional monitor if you really need this mode.\n");
941 				return -EINVAL;
942 			}
943 		}
944 	}
945 
946 	if ((par->lcd_table != 0) && (crtc->lcd_gen_cntl & LCD_ON)) {
947 		int VScan = 1;
948 		/* bpp -> bytespp, 1,4 -> 0; 8 -> 2; 15,16 -> 1; 24 -> 6; 32 -> 5
949 		const u8 DFP_h_sync_dly_LT[] = { 0, 2, 1, 6, 5 };
950 		const u8 ADD_to_strt_wid_and_dly_LT_DAC[] = { 0, 5, 6, 9, 9, 12, 12 };  */
951 
952 		vmode &= ~(FB_VMODE_DOUBLE | FB_VMODE_INTERLACED);
953 
954 		/*
955 		 * This is horror! When we simulate, say 640x480 on an 800x600
956 		 * LCD monitor, the CRTC should be programmed 800x600 values for
957 		 * the non visible part, but 640x480 for the visible part.
958 		 * This code has been tested on a laptop with it's 1400x1050 LCD
959 		 * monitor and a conventional monitor both switched on.
960 		 * Tested modes: 1280x1024, 1152x864, 1024x768, 800x600,
961 		 * works with little glitches also with DOUBLESCAN modes
962 		 */
963 		if (yres < par->lcd_height) {
964 			VScan = par->lcd_height / yres;
965 			if (VScan > 1) {
966 				VScan = 2;
967 				vmode |= FB_VMODE_DOUBLE;
968 			}
969 		}
970 
971 		h_sync_strt = h_disp + par->lcd_right_margin;
972 		h_sync_end = h_sync_strt + par->lcd_hsync_len;
973 		h_sync_dly = /*DFP_h_sync_dly[ ( bpp + 1 ) / 3 ]; */par->lcd_hsync_dly;
974 		h_total = h_disp + par->lcd_hblank_len;
975 
976 		v_sync_strt = v_disp + par->lcd_lower_margin / VScan;
977 		v_sync_end = v_sync_strt + par->lcd_vsync_len / VScan;
978 		v_total = v_disp + par->lcd_vblank_len / VScan;
979 	}
980 #endif /* CONFIG_FB_ATY_GENERIC_LCD */
981 
982 	h_disp = (h_disp >> 3) - 1;
983 	h_sync_strt = (h_sync_strt >> 3) - 1;
984 	h_sync_end = (h_sync_end >> 3) - 1;
985 	h_total = (h_total >> 3) - 1;
986 	h_sync_wid = h_sync_end - h_sync_strt;
987 
988 	FAIL_MAX("h_disp too large", h_disp, 0xff);
989 	FAIL_MAX("h_sync_strt too large", h_sync_strt, 0x1ff);
990 	/*FAIL_MAX("h_sync_wid too large", h_sync_wid, 0x1f);*/
991 	if (h_sync_wid > 0x1f)
992 		h_sync_wid = 0x1f;
993 	FAIL_MAX("h_total too large", h_total, 0x1ff);
994 
995 	if (vmode & FB_VMODE_DOUBLE) {
996 		v_disp <<= 1;
997 		v_sync_strt <<= 1;
998 		v_sync_end <<= 1;
999 		v_total <<= 1;
1000 	}
1001 
1002 	v_disp--;
1003 	v_sync_strt--;
1004 	v_sync_end--;
1005 	v_total--;
1006 	v_sync_wid = v_sync_end - v_sync_strt;
1007 
1008 	FAIL_MAX("v_disp too large", v_disp, 0x7ff);
1009 	FAIL_MAX("v_sync_stsrt too large", v_sync_strt, 0x7ff);
1010 	/*FAIL_MAX("v_sync_wid too large", v_sync_wid, 0x1f);*/
1011 	if (v_sync_wid > 0x1f)
1012 		v_sync_wid = 0x1f;
1013 	FAIL_MAX("v_total too large", v_total, 0x7ff);
1014 
1015 	c_sync = sync & FB_SYNC_COMP_HIGH_ACT ? CRTC_CSYNC_EN : 0;
1016 
1017 	/* output */
1018 	crtc->vxres = vxres;
1019 	crtc->vyres = vyres;
1020 	crtc->xoffset = xoffset;
1021 	crtc->yoffset = yoffset;
1022 	crtc->bpp = bpp;
1023 	crtc->off_pitch =
1024 		((yoffset * line_length + xoffset * bpp / 8) / 8) |
1025 		((line_length / bpp) << 22);
1026 	crtc->vline_crnt_vline = 0;
1027 
1028 	crtc->h_tot_disp = h_total | (h_disp << 16);
1029 	crtc->h_sync_strt_wid = (h_sync_strt & 0xff) | (h_sync_dly << 8) |
1030 		((h_sync_strt & 0x100) << 4) | (h_sync_wid << 16) |
1031 		(h_sync_pol << 21);
1032 	crtc->v_tot_disp = v_total | (v_disp << 16);
1033 	crtc->v_sync_strt_wid = v_sync_strt | (v_sync_wid << 16) |
1034 		(v_sync_pol << 21);
1035 
1036 	/* crtc->gen_cntl = aty_ld_le32(CRTC_GEN_CNTL, par) & CRTC_PRESERVED_MASK; */
1037 	crtc->gen_cntl = CRTC_EXT_DISP_EN | CRTC_EN | pix_width | c_sync;
1038 	crtc->gen_cntl |= CRTC_VGA_LINEAR;
1039 
1040 	/* Enable doublescan mode if requested */
1041 	if (vmode & FB_VMODE_DOUBLE)
1042 		crtc->gen_cntl |= CRTC_DBL_SCAN_EN;
1043 	/* Enable interlaced mode if requested */
1044 	if (vmode & FB_VMODE_INTERLACED)
1045 		crtc->gen_cntl |= CRTC_INTERLACE_EN;
1046 #ifdef CONFIG_FB_ATY_GENERIC_LCD
1047 	if (par->lcd_table != 0) {
1048 		u32 vdisplay = yres;
1049 		if (vmode & FB_VMODE_DOUBLE)
1050 			vdisplay <<= 1;
1051 		crtc->gen_cntl &= ~(CRTC2_EN | CRTC2_PIX_WIDTH);
1052 		crtc->lcd_gen_cntl &= ~(HORZ_DIVBY2_EN | DIS_HOR_CRT_DIVBY2 |
1053 					/*TVCLK_PM_EN | VCLK_DAC_PM_EN |*/
1054 					USE_SHADOWED_VEND |
1055 					USE_SHADOWED_ROWCUR |
1056 					SHADOW_EN | SHADOW_RW_EN);
1057 		crtc->lcd_gen_cntl |= DONT_SHADOW_VPAR/* | LOCK_8DOT*/;
1058 
1059 		/* MOBILITY M1 tested, FIXME: LT */
1060 		crtc->horz_stretching = aty_ld_lcd(HORZ_STRETCHING, par);
1061 		if (!M64_HAS(LT_LCD_REGS))
1062 			crtc->ext_vert_stretch = aty_ld_lcd(EXT_VERT_STRETCH, par) &
1063 				~(AUTO_VERT_RATIO | VERT_STRETCH_MODE | VERT_STRETCH_RATIO3);
1064 
1065 		crtc->horz_stretching &= ~(HORZ_STRETCH_RATIO |
1066 					   HORZ_STRETCH_LOOP | AUTO_HORZ_RATIO |
1067 					   HORZ_STRETCH_MODE | HORZ_STRETCH_EN);
1068 		if (xres < par->lcd_width && crtc->lcd_gen_cntl & LCD_ON) {
1069 			do {
1070 				/*
1071 				 * The horizontal blender misbehaves when
1072 				 * HDisplay is less than a certain threshold
1073 				 * (440 for a 1024-wide panel).  It doesn't
1074 				 * stretch such modes enough.  Use pixel
1075 				 * replication instead of blending to stretch
1076 				 * modes that can be made to exactly fit the
1077 				 * panel width.  The undocumented "NoLCDBlend"
1078 				 * option allows the pixel-replicated mode to
1079 				 * be slightly wider or narrower than the
1080 				 * panel width.  It also causes a mode that is
1081 				 * exactly half as wide as the panel to be
1082 				 * pixel-replicated, rather than blended.
1083 				 */
1084 				int HDisplay  = xres & ~7;
1085 				int nStretch  = par->lcd_width / HDisplay;
1086 				int Remainder = par->lcd_width % HDisplay;
1087 
1088 				if ((!Remainder && ((nStretch > 2))) ||
1089 				    (((HDisplay * 16) / par->lcd_width) < 7)) {
1090 					static const char StretchLoops[] = { 10, 12, 13, 15, 16 };
1091 					int horz_stretch_loop = -1, BestRemainder;
1092 					int Numerator = HDisplay, Denominator = par->lcd_width;
1093 					int Index = 5;
1094 					ATIReduceRatio(&Numerator, &Denominator);
1095 
1096 					BestRemainder = (Numerator * 16) / Denominator;
1097 					while (--Index >= 0) {
1098 						Remainder = ((Denominator - Numerator) * StretchLoops[Index]) %
1099 							Denominator;
1100 						if (Remainder < BestRemainder) {
1101 							horz_stretch_loop = Index;
1102 							if (!(BestRemainder = Remainder))
1103 								break;
1104 						}
1105 					}
1106 
1107 					if ((horz_stretch_loop >= 0) && !BestRemainder) {
1108 						int horz_stretch_ratio = 0, Accumulator = 0;
1109 						int reuse_previous = 1;
1110 
1111 						Index = StretchLoops[horz_stretch_loop];
1112 
1113 						while (--Index >= 0) {
1114 							if (Accumulator > 0)
1115 								horz_stretch_ratio |= reuse_previous;
1116 							else
1117 								Accumulator += Denominator;
1118 							Accumulator -= Numerator;
1119 							reuse_previous <<= 1;
1120 						}
1121 
1122 						crtc->horz_stretching |= (HORZ_STRETCH_EN |
1123 							((horz_stretch_loop & HORZ_STRETCH_LOOP) << 16) |
1124 							(horz_stretch_ratio & HORZ_STRETCH_RATIO));
1125 						break;      /* Out of the do { ... } while (0) */
1126 					}
1127 				}
1128 
1129 				crtc->horz_stretching |= (HORZ_STRETCH_MODE | HORZ_STRETCH_EN |
1130 					(((HDisplay * (HORZ_STRETCH_BLEND + 1)) / par->lcd_width) & HORZ_STRETCH_BLEND));
1131 			} while (0);
1132 		}
1133 
1134 		if (vdisplay < par->lcd_height && crtc->lcd_gen_cntl & LCD_ON) {
1135 			crtc->vert_stretching = (VERT_STRETCH_USE0 | VERT_STRETCH_EN |
1136 				(((vdisplay * (VERT_STRETCH_RATIO0 + 1)) / par->lcd_height) & VERT_STRETCH_RATIO0));
1137 
1138 			if (!M64_HAS(LT_LCD_REGS) &&
1139 			    xres <= (M64_HAS(MOBIL_BUS) ? 1024 : 800))
1140 				crtc->ext_vert_stretch |= VERT_STRETCH_MODE;
1141 		} else {
1142 			/*
1143 			 * Don't use vertical blending if the mode is too wide
1144 			 * or not vertically stretched.
1145 			 */
1146 			crtc->vert_stretching = 0;
1147 		}
1148 		/* copy to shadow crtc */
1149 		crtc->shadow_h_tot_disp = crtc->h_tot_disp;
1150 		crtc->shadow_h_sync_strt_wid = crtc->h_sync_strt_wid;
1151 		crtc->shadow_v_tot_disp = crtc->v_tot_disp;
1152 		crtc->shadow_v_sync_strt_wid = crtc->v_sync_strt_wid;
1153 	}
1154 #endif /* CONFIG_FB_ATY_GENERIC_LCD */
1155 
1156 	if (M64_HAS(MAGIC_FIFO)) {
1157 		/* FIXME: display FIFO low watermark values */
1158 		crtc->gen_cntl |= (aty_ld_le32(CRTC_GEN_CNTL, par) & CRTC_FIFO_LWM);
1159 	}
1160 	crtc->dp_pix_width = dp_pix_width;
1161 	crtc->dp_chain_mask = dp_chain_mask;
1162 
1163 	return 0;
1164 }
1165 
1166 static int aty_crtc_to_var(const struct crtc *crtc,
1167 			   struct fb_var_screeninfo *var)
1168 {
1169 	u32 xres, yres, bpp, left, right, upper, lower, hslen, vslen, sync;
1170 	u32 h_total, h_disp, h_sync_strt, h_sync_dly, h_sync_wid, h_sync_pol;
1171 	u32 v_total, v_disp, v_sync_strt, v_sync_wid, v_sync_pol, c_sync;
1172 	u32 pix_width;
1173 	u32 double_scan, interlace;
1174 
1175 	/* input */
1176 	h_total = crtc->h_tot_disp & 0x1ff;
1177 	h_disp = (crtc->h_tot_disp >> 16) & 0xff;
1178 	h_sync_strt = (crtc->h_sync_strt_wid & 0xff) | ((crtc->h_sync_strt_wid >> 4) & 0x100);
1179 	h_sync_dly = (crtc->h_sync_strt_wid >> 8) & 0x7;
1180 	h_sync_wid = (crtc->h_sync_strt_wid >> 16) & 0x1f;
1181 	h_sync_pol = (crtc->h_sync_strt_wid >> 21) & 0x1;
1182 	v_total = crtc->v_tot_disp & 0x7ff;
1183 	v_disp = (crtc->v_tot_disp >> 16) & 0x7ff;
1184 	v_sync_strt = crtc->v_sync_strt_wid & 0x7ff;
1185 	v_sync_wid = (crtc->v_sync_strt_wid >> 16) & 0x1f;
1186 	v_sync_pol = (crtc->v_sync_strt_wid >> 21) & 0x1;
1187 	c_sync = crtc->gen_cntl & CRTC_CSYNC_EN ? 1 : 0;
1188 	pix_width = crtc->gen_cntl & CRTC_PIX_WIDTH_MASK;
1189 	double_scan = crtc->gen_cntl & CRTC_DBL_SCAN_EN;
1190 	interlace = crtc->gen_cntl & CRTC_INTERLACE_EN;
1191 
1192 	/* convert */
1193 	xres = (h_disp + 1) * 8;
1194 	yres = v_disp + 1;
1195 	left = (h_total - h_sync_strt - h_sync_wid) * 8 - h_sync_dly;
1196 	right = (h_sync_strt - h_disp) * 8 + h_sync_dly;
1197 	hslen = h_sync_wid * 8;
1198 	upper = v_total - v_sync_strt - v_sync_wid;
1199 	lower = v_sync_strt - v_disp;
1200 	vslen = v_sync_wid;
1201 	sync = (h_sync_pol ? 0 : FB_SYNC_HOR_HIGH_ACT) |
1202 		(v_sync_pol ? 0 : FB_SYNC_VERT_HIGH_ACT) |
1203 		(c_sync ? FB_SYNC_COMP_HIGH_ACT : 0);
1204 
1205 	switch (pix_width) {
1206 	case CRTC_PIX_WIDTH_8BPP:
1207 		bpp = 8;
1208 		var->red.offset = 0;
1209 		var->red.length = 8;
1210 		var->green.offset = 0;
1211 		var->green.length = 8;
1212 		var->blue.offset = 0;
1213 		var->blue.length = 8;
1214 		var->transp.offset = 0;
1215 		var->transp.length = 0;
1216 		break;
1217 	case CRTC_PIX_WIDTH_15BPP:	/* RGB 555 */
1218 		bpp = 16;
1219 		var->red.offset = 10;
1220 		var->red.length = 5;
1221 		var->green.offset = 5;
1222 		var->green.length = 5;
1223 		var->blue.offset = 0;
1224 		var->blue.length = 5;
1225 		var->transp.offset = 0;
1226 		var->transp.length = 0;
1227 		break;
1228 	case CRTC_PIX_WIDTH_16BPP:	/* RGB 565 */
1229 		bpp = 16;
1230 		var->red.offset = 11;
1231 		var->red.length = 5;
1232 		var->green.offset = 5;
1233 		var->green.length = 6;
1234 		var->blue.offset = 0;
1235 		var->blue.length = 5;
1236 		var->transp.offset = 0;
1237 		var->transp.length = 0;
1238 		break;
1239 	case CRTC_PIX_WIDTH_24BPP:	/* RGB 888 */
1240 		bpp = 24;
1241 		var->red.offset = 16;
1242 		var->red.length = 8;
1243 		var->green.offset = 8;
1244 		var->green.length = 8;
1245 		var->blue.offset = 0;
1246 		var->blue.length = 8;
1247 		var->transp.offset = 0;
1248 		var->transp.length = 0;
1249 		break;
1250 	case CRTC_PIX_WIDTH_32BPP:	/* ARGB 8888 */
1251 		bpp = 32;
1252 		var->red.offset = 16;
1253 		var->red.length = 8;
1254 		var->green.offset = 8;
1255 		var->green.length = 8;
1256 		var->blue.offset = 0;
1257 		var->blue.length = 8;
1258 		var->transp.offset = 24;
1259 		var->transp.length = 8;
1260 		break;
1261 	default:
1262 		PRINTKE("Invalid pixel width\n");
1263 		return -EINVAL;
1264 	}
1265 
1266 	/* output */
1267 	var->xres = xres;
1268 	var->yres = yres;
1269 	var->xres_virtual = crtc->vxres;
1270 	var->yres_virtual = crtc->vyres;
1271 	var->bits_per_pixel = bpp;
1272 	var->left_margin = left;
1273 	var->right_margin = right;
1274 	var->upper_margin = upper;
1275 	var->lower_margin = lower;
1276 	var->hsync_len = hslen;
1277 	var->vsync_len = vslen;
1278 	var->sync = sync;
1279 	var->vmode = FB_VMODE_NONINTERLACED;
1280 	/*
1281 	 * In double scan mode, the vertical parameters are doubled,
1282 	 * so we need to halve them to get the right values.
1283 	 * In interlaced mode the values are already correct,
1284 	 * so no correction is necessary.
1285 	 */
1286 	if (interlace)
1287 		var->vmode = FB_VMODE_INTERLACED;
1288 
1289 	if (double_scan) {
1290 		var->vmode = FB_VMODE_DOUBLE;
1291 		var->yres >>= 1;
1292 		var->upper_margin >>= 1;
1293 		var->lower_margin >>= 1;
1294 		var->vsync_len >>= 1;
1295 	}
1296 
1297 	return 0;
1298 }
1299 
1300 /* ------------------------------------------------------------------------- */
1301 
1302 static int atyfb_set_par(struct fb_info *info)
1303 {
1304 	struct atyfb_par *par = (struct atyfb_par *) info->par;
1305 	struct fb_var_screeninfo *var = &info->var;
1306 	u32 tmp, pixclock;
1307 	int err;
1308 #ifdef DEBUG
1309 	struct fb_var_screeninfo debug;
1310 	u32 pixclock_in_ps;
1311 #endif
1312 	if (par->asleep)
1313 		return 0;
1314 
1315 	err = aty_var_to_crtc(info, var, &par->crtc);
1316 	if (err)
1317 		return err;
1318 
1319 	pixclock = atyfb_get_pixclock(var, par);
1320 
1321 	if (pixclock == 0) {
1322 		PRINTKE("Invalid pixclock\n");
1323 		return -EINVAL;
1324 	} else {
1325 		err = par->pll_ops->var_to_pll(info, pixclock,
1326 					       var->bits_per_pixel, &par->pll);
1327 		if (err)
1328 			return err;
1329 	}
1330 
1331 	par->accel_flags = var->accel_flags; /* hack */
1332 
1333 	if (var->accel_flags) {
1334 		atyfb_ops.fb_sync = atyfb_sync;
1335 		info->flags &= ~FBINFO_HWACCEL_DISABLED;
1336 	} else {
1337 		atyfb_ops.fb_sync = NULL;
1338 		info->flags |= FBINFO_HWACCEL_DISABLED;
1339 	}
1340 
1341 	if (par->blitter_may_be_busy)
1342 		wait_for_idle(par);
1343 
1344 	aty_set_crtc(par, &par->crtc);
1345 	par->dac_ops->set_dac(info, &par->pll,
1346 			      var->bits_per_pixel, par->accel_flags);
1347 	par->pll_ops->set_pll(info, &par->pll);
1348 
1349 #ifdef DEBUG
1350 	if (par->pll_ops && par->pll_ops->pll_to_var)
1351 		pixclock_in_ps = par->pll_ops->pll_to_var(info, &par->pll);
1352 	else
1353 		pixclock_in_ps = 0;
1354 
1355 	if (0 == pixclock_in_ps) {
1356 		PRINTKE("ALERT ops->pll_to_var get 0\n");
1357 		pixclock_in_ps = pixclock;
1358 	}
1359 
1360 	memset(&debug, 0, sizeof(debug));
1361 	if (!aty_crtc_to_var(&par->crtc, &debug)) {
1362 		u32 hSync, vRefresh;
1363 		u32 h_disp, h_sync_strt, h_sync_end, h_total;
1364 		u32 v_disp, v_sync_strt, v_sync_end, v_total;
1365 
1366 		h_disp = debug.xres;
1367 		h_sync_strt = h_disp + debug.right_margin;
1368 		h_sync_end = h_sync_strt + debug.hsync_len;
1369 		h_total = h_sync_end + debug.left_margin;
1370 		v_disp = debug.yres;
1371 		v_sync_strt = v_disp + debug.lower_margin;
1372 		v_sync_end = v_sync_strt + debug.vsync_len;
1373 		v_total = v_sync_end + debug.upper_margin;
1374 
1375 		hSync = 1000000000 / (pixclock_in_ps * h_total);
1376 		vRefresh = (hSync * 1000) / v_total;
1377 		if (par->crtc.gen_cntl & CRTC_INTERLACE_EN)
1378 			vRefresh *= 2;
1379 		if (par->crtc.gen_cntl & CRTC_DBL_SCAN_EN)
1380 			vRefresh /= 2;
1381 
1382 		DPRINTK("atyfb_set_par\n");
1383 		DPRINTK(" Set Visible Mode to %ix%i-%i\n",
1384 			var->xres, var->yres, var->bits_per_pixel);
1385 		DPRINTK(" Virtual resolution %ix%i, "
1386 			"pixclock_in_ps %i (calculated %i)\n",
1387 			var->xres_virtual, var->yres_virtual,
1388 			pixclock, pixclock_in_ps);
1389 		DPRINTK(" Dot clock:           %i MHz\n",
1390 			1000000 / pixclock_in_ps);
1391 		DPRINTK(" Horizontal sync:     %i kHz\n", hSync);
1392 		DPRINTK(" Vertical refresh:    %i Hz\n", vRefresh);
1393 		DPRINTK(" x  style: %i.%03i %i %i %i %i   %i %i %i %i\n",
1394 			1000000 / pixclock_in_ps, 1000000 % pixclock_in_ps,
1395 			h_disp, h_sync_strt, h_sync_end, h_total,
1396 			v_disp, v_sync_strt, v_sync_end, v_total);
1397 		DPRINTK(" fb style: %i  %i %i %i %i %i %i %i %i\n",
1398 			pixclock_in_ps,
1399 			debug.left_margin, h_disp, debug.right_margin, debug.hsync_len,
1400 			debug.upper_margin, v_disp, debug.lower_margin, debug.vsync_len);
1401 	}
1402 #endif /* DEBUG */
1403 
1404 	if (!M64_HAS(INTEGRATED)) {
1405 		/* Don't forget MEM_CNTL */
1406 		tmp = aty_ld_le32(MEM_CNTL, par) & 0xf0ffffff;
1407 		switch (var->bits_per_pixel) {
1408 		case 8:
1409 			tmp |= 0x02000000;
1410 			break;
1411 		case 16:
1412 			tmp |= 0x03000000;
1413 			break;
1414 		case 32:
1415 			tmp |= 0x06000000;
1416 			break;
1417 		}
1418 		aty_st_le32(MEM_CNTL, tmp, par);
1419 	} else {
1420 		tmp = aty_ld_le32(MEM_CNTL, par) & 0xf00fffff;
1421 		if (!M64_HAS(MAGIC_POSTDIV))
1422 			tmp |= par->mem_refresh_rate << 20;
1423 		switch (var->bits_per_pixel) {
1424 		case 8:
1425 		case 24:
1426 			tmp |= 0x00000000;
1427 			break;
1428 		case 16:
1429 			tmp |= 0x04000000;
1430 			break;
1431 		case 32:
1432 			tmp |= 0x08000000;
1433 			break;
1434 		}
1435 		if (M64_HAS(CT_BUS)) {
1436 			aty_st_le32(DAC_CNTL, 0x87010184, par);
1437 			aty_st_le32(BUS_CNTL, 0x680000f9, par);
1438 		} else if (M64_HAS(VT_BUS)) {
1439 			aty_st_le32(DAC_CNTL, 0x87010184, par);
1440 			aty_st_le32(BUS_CNTL, 0x680000f9, par);
1441 		} else if (M64_HAS(MOBIL_BUS)) {
1442 			aty_st_le32(DAC_CNTL, 0x80010102, par);
1443 			aty_st_le32(BUS_CNTL, 0x7b33a040 | (par->aux_start ? BUS_APER_REG_DIS : 0), par);
1444 		} else {
1445 			/* GT */
1446 			aty_st_le32(DAC_CNTL, 0x86010102, par);
1447 			aty_st_le32(BUS_CNTL, 0x7b23a040 | (par->aux_start ? BUS_APER_REG_DIS : 0), par);
1448 			aty_st_le32(EXT_MEM_CNTL, aty_ld_le32(EXT_MEM_CNTL, par) | 0x5000001, par);
1449 		}
1450 		aty_st_le32(MEM_CNTL, tmp, par);
1451 	}
1452 	aty_st_8(DAC_MASK, 0xff, par);
1453 
1454 	info->fix.line_length = calc_line_length(par, var->xres_virtual,
1455 						 var->bits_per_pixel);
1456 
1457 	info->fix.visual = var->bits_per_pixel <= 8 ?
1458 		FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_DIRECTCOLOR;
1459 
1460 	/* Initialize the graphics engine */
1461 	if (par->accel_flags & FB_ACCELF_TEXT)
1462 		aty_init_engine(par, info);
1463 
1464 #ifdef CONFIG_BOOTX_TEXT
1465 	btext_update_display(info->fix.smem_start,
1466 		(((par->crtc.h_tot_disp >> 16) & 0xff) + 1) * 8,
1467 		((par->crtc.v_tot_disp >> 16) & 0x7ff) + 1,
1468 		var->bits_per_pixel,
1469 		par->crtc.vxres * var->bits_per_pixel / 8);
1470 #endif /* CONFIG_BOOTX_TEXT */
1471 #ifdef DEBUG
1472 {
1473 	/* dump non shadow CRTC, pll, LCD registers */
1474 	int i; u32 base;
1475 
1476 	/* CRTC registers */
1477 	base = 0x2000;
1478 	printk("debug atyfb: Mach64 non-shadow register values:");
1479 	for (i = 0; i < 256; i = i+4) {
1480 		if (i % 16 == 0) {
1481 			pr_cont("\n");
1482 			printk("debug atyfb: 0x%04X: ", base + i);
1483 		}
1484 		pr_cont(" %08X", aty_ld_le32(i, par));
1485 	}
1486 	pr_cont("\n\n");
1487 
1488 #ifdef CONFIG_FB_ATY_CT
1489 	/* PLL registers */
1490 	base = 0x00;
1491 	printk("debug atyfb: Mach64 PLL register values:");
1492 	for (i = 0; i < 64; i++) {
1493 		if (i % 16 == 0) {
1494 			pr_cont("\n");
1495 			printk("debug atyfb: 0x%02X: ", base + i);
1496 		}
1497 		if (i % 4 == 0)
1498 			pr_cont(" ");
1499 		pr_cont("%02X", aty_ld_pll_ct(i, par));
1500 	}
1501 	pr_cont("\n\n");
1502 #endif	/* CONFIG_FB_ATY_CT */
1503 
1504 #ifdef CONFIG_FB_ATY_GENERIC_LCD
1505 	if (par->lcd_table != 0) {
1506 		/* LCD registers */
1507 		base = 0x00;
1508 		printk("debug atyfb: LCD register values:");
1509 		if (M64_HAS(LT_LCD_REGS)) {
1510 			for (i = 0; i <= POWER_MANAGEMENT; i++) {
1511 				if (i == EXT_VERT_STRETCH)
1512 					continue;
1513 				pr_cont("\ndebug atyfb: 0x%04X: ",
1514 				       lt_lcd_regs[i]);
1515 				pr_cont(" %08X", aty_ld_lcd(i, par));
1516 			}
1517 		} else {
1518 			for (i = 0; i < 64; i++) {
1519 				if (i % 4 == 0)
1520 					pr_cont("\ndebug atyfb: 0x%02X: ",
1521 					       base + i);
1522 				pr_cont(" %08X", aty_ld_lcd(i, par));
1523 			}
1524 		}
1525 		pr_cont("\n\n");
1526 	}
1527 #endif /* CONFIG_FB_ATY_GENERIC_LCD */
1528 }
1529 #endif /* DEBUG */
1530 	return 0;
1531 }
1532 
1533 static int atyfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
1534 {
1535 	struct atyfb_par *par = (struct atyfb_par *) info->par;
1536 	int err;
1537 	struct crtc crtc;
1538 	union aty_pll pll;
1539 	u32 pixclock;
1540 
1541 	memcpy(&pll, &par->pll, sizeof(pll));
1542 
1543 	err = aty_var_to_crtc(info, var, &crtc);
1544 	if (err)
1545 		return err;
1546 
1547 	pixclock = atyfb_get_pixclock(var, par);
1548 
1549 	if (pixclock == 0) {
1550 		if (!(var->activate & FB_ACTIVATE_TEST))
1551 			PRINTKE("Invalid pixclock\n");
1552 		return -EINVAL;
1553 	} else {
1554 		err = par->pll_ops->var_to_pll(info, pixclock,
1555 					       var->bits_per_pixel, &pll);
1556 		if (err)
1557 			return err;
1558 	}
1559 
1560 	if (var->accel_flags & FB_ACCELF_TEXT)
1561 		info->var.accel_flags = FB_ACCELF_TEXT;
1562 	else
1563 		info->var.accel_flags = 0;
1564 
1565 	aty_crtc_to_var(&crtc, var);
1566 	var->pixclock = par->pll_ops->pll_to_var(info, &pll);
1567 	return 0;
1568 }
1569 
1570 static void set_off_pitch(struct atyfb_par *par, const struct fb_info *info)
1571 {
1572 	u32 xoffset = info->var.xoffset;
1573 	u32 yoffset = info->var.yoffset;
1574 	u32 line_length = info->fix.line_length;
1575 	u32 bpp = info->var.bits_per_pixel;
1576 
1577 	par->crtc.off_pitch =
1578 		((yoffset * line_length + xoffset * bpp / 8) / 8) |
1579 		((line_length / bpp) << 22);
1580 }
1581 
1582 
1583 /*
1584  * Open/Release the frame buffer device
1585  */
1586 
1587 static int atyfb_open(struct fb_info *info, int user)
1588 {
1589 	struct atyfb_par *par = (struct atyfb_par *) info->par;
1590 
1591 	if (user) {
1592 		par->open++;
1593 #ifdef __sparc__
1594 		par->mmaped = 0;
1595 #endif
1596 	}
1597 	return 0;
1598 }
1599 
1600 static irqreturn_t aty_irq(int irq, void *dev_id)
1601 {
1602 	struct atyfb_par *par = dev_id;
1603 	int handled = 0;
1604 	u32 int_cntl;
1605 
1606 	spin_lock(&par->int_lock);
1607 
1608 	int_cntl = aty_ld_le32(CRTC_INT_CNTL, par);
1609 
1610 	if (int_cntl & CRTC_VBLANK_INT) {
1611 		/* clear interrupt */
1612 		aty_st_le32(CRTC_INT_CNTL, (int_cntl & CRTC_INT_EN_MASK) |
1613 			    CRTC_VBLANK_INT_AK, par);
1614 		par->vblank.count++;
1615 		if (par->vblank.pan_display) {
1616 			par->vblank.pan_display = 0;
1617 			aty_st_le32(CRTC_OFF_PITCH, par->crtc.off_pitch, par);
1618 		}
1619 		wake_up_interruptible(&par->vblank.wait);
1620 		handled = 1;
1621 	}
1622 
1623 	spin_unlock(&par->int_lock);
1624 
1625 	return IRQ_RETVAL(handled);
1626 }
1627 
1628 static int aty_enable_irq(struct atyfb_par *par, int reenable)
1629 {
1630 	u32 int_cntl;
1631 
1632 	if (!test_and_set_bit(0, &par->irq_flags)) {
1633 		if (request_irq(par->irq, aty_irq, IRQF_SHARED, "atyfb", par)) {
1634 			clear_bit(0, &par->irq_flags);
1635 			return -EINVAL;
1636 		}
1637 		spin_lock_irq(&par->int_lock);
1638 		int_cntl = aty_ld_le32(CRTC_INT_CNTL, par) & CRTC_INT_EN_MASK;
1639 		/* clear interrupt */
1640 		aty_st_le32(CRTC_INT_CNTL, int_cntl | CRTC_VBLANK_INT_AK, par);
1641 		/* enable interrupt */
1642 		aty_st_le32(CRTC_INT_CNTL, int_cntl | CRTC_VBLANK_INT_EN, par);
1643 		spin_unlock_irq(&par->int_lock);
1644 	} else if (reenable) {
1645 		spin_lock_irq(&par->int_lock);
1646 		int_cntl = aty_ld_le32(CRTC_INT_CNTL, par) & CRTC_INT_EN_MASK;
1647 		if (!(int_cntl & CRTC_VBLANK_INT_EN)) {
1648 			printk("atyfb: someone disabled IRQ [%08x]\n",
1649 			       int_cntl);
1650 			/* re-enable interrupt */
1651 			aty_st_le32(CRTC_INT_CNTL, int_cntl |
1652 				    CRTC_VBLANK_INT_EN, par);
1653 		}
1654 		spin_unlock_irq(&par->int_lock);
1655 	}
1656 
1657 	return 0;
1658 }
1659 
1660 static int aty_disable_irq(struct atyfb_par *par)
1661 {
1662 	u32 int_cntl;
1663 
1664 	if (test_and_clear_bit(0, &par->irq_flags)) {
1665 		if (par->vblank.pan_display) {
1666 			par->vblank.pan_display = 0;
1667 			aty_st_le32(CRTC_OFF_PITCH, par->crtc.off_pitch, par);
1668 		}
1669 		spin_lock_irq(&par->int_lock);
1670 		int_cntl = aty_ld_le32(CRTC_INT_CNTL, par) & CRTC_INT_EN_MASK;
1671 		/* disable interrupt */
1672 		aty_st_le32(CRTC_INT_CNTL, int_cntl & ~CRTC_VBLANK_INT_EN, par);
1673 		spin_unlock_irq(&par->int_lock);
1674 		free_irq(par->irq, par);
1675 	}
1676 
1677 	return 0;
1678 }
1679 
1680 static int atyfb_release(struct fb_info *info, int user)
1681 {
1682 	struct atyfb_par *par = (struct atyfb_par *) info->par;
1683 #ifdef __sparc__
1684 	int was_mmaped;
1685 #endif
1686 
1687 	if (!user)
1688 		return 0;
1689 
1690 	par->open--;
1691 	mdelay(1);
1692 	wait_for_idle(par);
1693 
1694 	if (par->open)
1695 		return 0;
1696 
1697 #ifdef __sparc__
1698 	was_mmaped = par->mmaped;
1699 
1700 	par->mmaped = 0;
1701 
1702 	if (was_mmaped) {
1703 		struct fb_var_screeninfo var;
1704 
1705 		/*
1706 		 * Now reset the default display config, we have
1707 		 * no idea what the program(s) which mmap'd the
1708 		 * chip did to the configuration, nor whether it
1709 		 * restored it correctly.
1710 		 */
1711 		var = default_var;
1712 		if (noaccel)
1713 			var.accel_flags &= ~FB_ACCELF_TEXT;
1714 		else
1715 			var.accel_flags |= FB_ACCELF_TEXT;
1716 		if (var.yres == var.yres_virtual) {
1717 			u32 videoram = (info->fix.smem_len - (PAGE_SIZE << 2));
1718 			var.yres_virtual =
1719 				((videoram * 8) / var.bits_per_pixel) /
1720 				var.xres_virtual;
1721 			if (var.yres_virtual < var.yres)
1722 				var.yres_virtual = var.yres;
1723 		}
1724 	}
1725 #endif
1726 	aty_disable_irq(par);
1727 
1728 	return 0;
1729 }
1730 
1731 /*
1732  * Pan or Wrap the Display
1733  *
1734  * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
1735  */
1736 
1737 static int atyfb_pan_display(struct fb_var_screeninfo *var,
1738 			     struct fb_info *info)
1739 {
1740 	struct atyfb_par *par = (struct atyfb_par *) info->par;
1741 	u32 xres, yres, xoffset, yoffset;
1742 
1743 	xres = (((par->crtc.h_tot_disp >> 16) & 0xff) + 1) * 8;
1744 	yres = ((par->crtc.v_tot_disp >> 16) & 0x7ff) + 1;
1745 	if (par->crtc.gen_cntl & CRTC_DBL_SCAN_EN)
1746 		yres >>= 1;
1747 	xoffset = (var->xoffset + 7) & ~7;
1748 	yoffset = var->yoffset;
1749 	if (xoffset + xres > par->crtc.vxres ||
1750 	    yoffset + yres > par->crtc.vyres)
1751 		return -EINVAL;
1752 	info->var.xoffset = xoffset;
1753 	info->var.yoffset = yoffset;
1754 	if (par->asleep)
1755 		return 0;
1756 
1757 	set_off_pitch(par, info);
1758 	if ((var->activate & FB_ACTIVATE_VBL) && !aty_enable_irq(par, 0)) {
1759 		par->vblank.pan_display = 1;
1760 	} else {
1761 		par->vblank.pan_display = 0;
1762 		aty_st_le32(CRTC_OFF_PITCH, par->crtc.off_pitch, par);
1763 	}
1764 
1765 	return 0;
1766 }
1767 
1768 static int aty_waitforvblank(struct atyfb_par *par, u32 crtc)
1769 {
1770 	struct aty_interrupt *vbl;
1771 	unsigned int count;
1772 	int ret;
1773 
1774 	switch (crtc) {
1775 	case 0:
1776 		vbl = &par->vblank;
1777 		break;
1778 	default:
1779 		return -ENODEV;
1780 	}
1781 
1782 	ret = aty_enable_irq(par, 0);
1783 	if (ret)
1784 		return ret;
1785 
1786 	count = vbl->count;
1787 	ret = wait_event_interruptible_timeout(vbl->wait,
1788 					       count != vbl->count, HZ/10);
1789 	if (ret < 0)
1790 		return ret;
1791 	if (ret == 0) {
1792 		aty_enable_irq(par, 1);
1793 		return -ETIMEDOUT;
1794 	}
1795 
1796 	return 0;
1797 }
1798 
1799 
1800 #ifdef DEBUG
1801 #define ATYIO_CLKR		0x41545900	/* ATY\00 */
1802 #define ATYIO_CLKW		0x41545901	/* ATY\01 */
1803 
1804 struct atyclk {
1805 	u32 ref_clk_per;
1806 	u8 pll_ref_div;
1807 	u8 mclk_fb_div;
1808 	u8 mclk_post_div;	/* 1,2,3,4,8 */
1809 	u8 mclk_fb_mult;	/* 2 or 4 */
1810 	u8 xclk_post_div;	/* 1,2,3,4,8 */
1811 	u8 vclk_fb_div;
1812 	u8 vclk_post_div;	/* 1,2,3,4,6,8,12 */
1813 	u32 dsp_xclks_per_row;	/* 0-16383 */
1814 	u32 dsp_loop_latency;	/* 0-15 */
1815 	u32 dsp_precision;	/* 0-7 */
1816 	u32 dsp_on;		/* 0-2047 */
1817 	u32 dsp_off;		/* 0-2047 */
1818 };
1819 
1820 #define ATYIO_FEATR		0x41545902	/* ATY\02 */
1821 #define ATYIO_FEATW		0x41545903	/* ATY\03 */
1822 #endif
1823 
1824 static int atyfb_ioctl(struct fb_info *info, u_int cmd, u_long arg)
1825 {
1826 	struct atyfb_par *par = (struct atyfb_par *) info->par;
1827 #ifdef __sparc__
1828 	struct fbtype fbtyp;
1829 #endif
1830 
1831 	switch (cmd) {
1832 #ifdef __sparc__
1833 	case FBIOGTYPE:
1834 		fbtyp.fb_type = FBTYPE_PCI_GENERIC;
1835 		fbtyp.fb_width = par->crtc.vxres;
1836 		fbtyp.fb_height = par->crtc.vyres;
1837 		fbtyp.fb_depth = info->var.bits_per_pixel;
1838 		fbtyp.fb_cmsize = info->cmap.len;
1839 		fbtyp.fb_size = info->fix.smem_len;
1840 		if (copy_to_user((struct fbtype __user *) arg, &fbtyp,
1841 				 sizeof(fbtyp)))
1842 			return -EFAULT;
1843 		break;
1844 #endif /* __sparc__ */
1845 
1846 	case FBIO_WAITFORVSYNC:
1847 		{
1848 			u32 crtc;
1849 
1850 			if (get_user(crtc, (__u32 __user *) arg))
1851 				return -EFAULT;
1852 
1853 			return aty_waitforvblank(par, crtc);
1854 		}
1855 
1856 #if defined(DEBUG) && defined(CONFIG_FB_ATY_CT)
1857 	case ATYIO_CLKR:
1858 		if (M64_HAS(INTEGRATED)) {
1859 			struct atyclk clk = { 0 };
1860 			union aty_pll *pll = &par->pll;
1861 			u32 dsp_config = pll->ct.dsp_config;
1862 			u32 dsp_on_off = pll->ct.dsp_on_off;
1863 			clk.ref_clk_per = par->ref_clk_per;
1864 			clk.pll_ref_div = pll->ct.pll_ref_div;
1865 			clk.mclk_fb_div = pll->ct.mclk_fb_div;
1866 			clk.mclk_post_div = pll->ct.mclk_post_div_real;
1867 			clk.mclk_fb_mult = pll->ct.mclk_fb_mult;
1868 			clk.xclk_post_div = pll->ct.xclk_post_div_real;
1869 			clk.vclk_fb_div = pll->ct.vclk_fb_div;
1870 			clk.vclk_post_div = pll->ct.vclk_post_div_real;
1871 			clk.dsp_xclks_per_row = dsp_config & 0x3fff;
1872 			clk.dsp_loop_latency = (dsp_config >> 16) & 0xf;
1873 			clk.dsp_precision = (dsp_config >> 20) & 7;
1874 			clk.dsp_off = dsp_on_off & 0x7ff;
1875 			clk.dsp_on = (dsp_on_off >> 16) & 0x7ff;
1876 			if (copy_to_user((struct atyclk __user *) arg, &clk,
1877 					 sizeof(clk)))
1878 				return -EFAULT;
1879 		} else
1880 			return -EINVAL;
1881 		break;
1882 	case ATYIO_CLKW:
1883 		if (M64_HAS(INTEGRATED)) {
1884 			struct atyclk clk;
1885 			union aty_pll *pll = &par->pll;
1886 			if (copy_from_user(&clk, (struct atyclk __user *) arg,
1887 					   sizeof(clk)))
1888 				return -EFAULT;
1889 			par->ref_clk_per = clk.ref_clk_per;
1890 			pll->ct.pll_ref_div = clk.pll_ref_div;
1891 			pll->ct.mclk_fb_div = clk.mclk_fb_div;
1892 			pll->ct.mclk_post_div_real = clk.mclk_post_div;
1893 			pll->ct.mclk_fb_mult = clk.mclk_fb_mult;
1894 			pll->ct.xclk_post_div_real = clk.xclk_post_div;
1895 			pll->ct.vclk_fb_div = clk.vclk_fb_div;
1896 			pll->ct.vclk_post_div_real = clk.vclk_post_div;
1897 			pll->ct.dsp_config = (clk.dsp_xclks_per_row & 0x3fff) |
1898 				((clk.dsp_loop_latency & 0xf) << 16) |
1899 				((clk.dsp_precision & 7) << 20);
1900 			pll->ct.dsp_on_off = (clk.dsp_off & 0x7ff) |
1901 				((clk.dsp_on & 0x7ff) << 16);
1902 			/*aty_calc_pll_ct(info, &pll->ct);*/
1903 			aty_set_pll_ct(info, pll);
1904 		} else
1905 			return -EINVAL;
1906 		break;
1907 	case ATYIO_FEATR:
1908 		if (get_user(par->features, (u32 __user *) arg))
1909 			return -EFAULT;
1910 		break;
1911 	case ATYIO_FEATW:
1912 		if (put_user(par->features, (u32 __user *) arg))
1913 			return -EFAULT;
1914 		break;
1915 #endif /* DEBUG && CONFIG_FB_ATY_CT */
1916 	default:
1917 		return -EINVAL;
1918 	}
1919 	return 0;
1920 }
1921 
1922 static int atyfb_sync(struct fb_info *info)
1923 {
1924 	struct atyfb_par *par = (struct atyfb_par *) info->par;
1925 
1926 	if (par->blitter_may_be_busy)
1927 		wait_for_idle(par);
1928 	return 0;
1929 }
1930 
1931 #ifdef __sparc__
1932 static int atyfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
1933 {
1934 	struct atyfb_par *par = (struct atyfb_par *) info->par;
1935 	unsigned int size, page, map_size = 0;
1936 	unsigned long map_offset = 0;
1937 	unsigned long off;
1938 	int i;
1939 
1940 	if (!par->mmap_map)
1941 		return -ENXIO;
1942 
1943 	if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
1944 		return -EINVAL;
1945 
1946 	off = vma->vm_pgoff << PAGE_SHIFT;
1947 	size = vma->vm_end - vma->vm_start;
1948 
1949 	/* VM_IO | VM_DONTEXPAND | VM_DONTDUMP are set by remap_pfn_range() */
1950 
1951 	if (((vma->vm_pgoff == 0) && (size == info->fix.smem_len)) ||
1952 	    ((off == info->fix.smem_len) && (size == PAGE_SIZE)))
1953 		off += 0x8000000000000000UL;
1954 
1955 	vma->vm_pgoff = off >> PAGE_SHIFT;	/* propagate off changes */
1956 
1957 	/* Each page, see which map applies */
1958 	for (page = 0; page < size;) {
1959 		map_size = 0;
1960 		for (i = 0; par->mmap_map[i].size; i++) {
1961 			unsigned long start = par->mmap_map[i].voff;
1962 			unsigned long end = start + par->mmap_map[i].size;
1963 			unsigned long offset = off + page;
1964 
1965 			if (start > offset)
1966 				continue;
1967 			if (offset >= end)
1968 				continue;
1969 
1970 			map_size = par->mmap_map[i].size - (offset - start);
1971 			map_offset = par->mmap_map[i].poff + (offset - start);
1972 			break;
1973 		}
1974 		if (!map_size) {
1975 			page += PAGE_SIZE;
1976 			continue;
1977 		}
1978 		if (page + map_size > size)
1979 			map_size = size - page;
1980 
1981 		pgprot_val(vma->vm_page_prot) &= ~(par->mmap_map[i].prot_mask);
1982 		pgprot_val(vma->vm_page_prot) |= par->mmap_map[i].prot_flag;
1983 
1984 		if (remap_pfn_range(vma, vma->vm_start + page,
1985 			map_offset >> PAGE_SHIFT, map_size, vma->vm_page_prot))
1986 			return -EAGAIN;
1987 
1988 		page += map_size;
1989 	}
1990 
1991 	if (!map_size)
1992 		return -EINVAL;
1993 
1994 	if (!par->mmaped)
1995 		par->mmaped = 1;
1996 	return 0;
1997 }
1998 #endif /* __sparc__ */
1999 
2000 
2001 
2002 #if defined(CONFIG_PCI)
2003 
2004 #ifdef CONFIG_PPC_PMAC
2005 /* Power management routines. Those are used for PowerBook sleep.
2006  */
2007 static int aty_power_mgmt(int sleep, struct atyfb_par *par)
2008 {
2009 	u32 pm;
2010 	int timeout;
2011 
2012 	pm = aty_ld_lcd(POWER_MANAGEMENT, par);
2013 	pm = (pm & ~PWR_MGT_MODE_MASK) | PWR_MGT_MODE_REG;
2014 	aty_st_lcd(POWER_MANAGEMENT, pm, par);
2015 	pm = aty_ld_lcd(POWER_MANAGEMENT, par);
2016 
2017 	timeout = 2000;
2018 	if (sleep) {
2019 		/* Sleep */
2020 		pm &= ~PWR_MGT_ON;
2021 		aty_st_lcd(POWER_MANAGEMENT, pm, par);
2022 		pm = aty_ld_lcd(POWER_MANAGEMENT, par);
2023 		udelay(10);
2024 		pm &= ~(PWR_BLON | AUTO_PWR_UP);
2025 		pm |= SUSPEND_NOW;
2026 		aty_st_lcd(POWER_MANAGEMENT, pm, par);
2027 		pm = aty_ld_lcd(POWER_MANAGEMENT, par);
2028 		udelay(10);
2029 		pm |= PWR_MGT_ON;
2030 		aty_st_lcd(POWER_MANAGEMENT, pm, par);
2031 		do {
2032 			pm = aty_ld_lcd(POWER_MANAGEMENT, par);
2033 			mdelay(1);
2034 			if ((--timeout) == 0)
2035 				break;
2036 		} while ((pm & PWR_MGT_STATUS_MASK) != PWR_MGT_STATUS_SUSPEND);
2037 	} else {
2038 		/* Wakeup */
2039 		pm &= ~PWR_MGT_ON;
2040 		aty_st_lcd(POWER_MANAGEMENT, pm, par);
2041 		pm = aty_ld_lcd(POWER_MANAGEMENT, par);
2042 		udelay(10);
2043 		pm &= ~SUSPEND_NOW;
2044 		pm |= (PWR_BLON | AUTO_PWR_UP);
2045 		aty_st_lcd(POWER_MANAGEMENT, pm, par);
2046 		pm = aty_ld_lcd(POWER_MANAGEMENT, par);
2047 		udelay(10);
2048 		pm |= PWR_MGT_ON;
2049 		aty_st_lcd(POWER_MANAGEMENT, pm, par);
2050 		do {
2051 			pm = aty_ld_lcd(POWER_MANAGEMENT, par);
2052 			mdelay(1);
2053 			if ((--timeout) == 0)
2054 				break;
2055 		} while ((pm & PWR_MGT_STATUS_MASK) != 0);
2056 	}
2057 	mdelay(500);
2058 
2059 	return timeout ? 0 : -EIO;
2060 }
2061 #endif /* CONFIG_PPC_PMAC */
2062 
2063 static int atyfb_pci_suspend_late(struct device *dev, pm_message_t state)
2064 {
2065 	struct pci_dev *pdev = to_pci_dev(dev);
2066 	struct fb_info *info = pci_get_drvdata(pdev);
2067 	struct atyfb_par *par = (struct atyfb_par *) info->par;
2068 
2069 	if (state.event == pdev->dev.power.power_state.event)
2070 		return 0;
2071 
2072 	console_lock();
2073 
2074 	fb_set_suspend(info, 1);
2075 
2076 	/* Idle & reset engine */
2077 	wait_for_idle(par);
2078 	aty_reset_engine(par);
2079 
2080 	/* Blank display and LCD */
2081 	atyfb_blank(FB_BLANK_POWERDOWN, info);
2082 
2083 	par->asleep = 1;
2084 	par->lock_blank = 1;
2085 
2086 	/*
2087 	 * Because we may change PCI D state ourselves, we need to
2088 	 * first save the config space content so the core can
2089 	 * restore it properly on resume.
2090 	 */
2091 
2092 #ifdef CONFIG_PPC_PMAC
2093 	/* Set chip to "suspend" mode */
2094 	if (machine_is(powermac) && aty_power_mgmt(1, par)) {
2095 		par->asleep = 0;
2096 		par->lock_blank = 0;
2097 		atyfb_blank(FB_BLANK_UNBLANK, info);
2098 		fb_set_suspend(info, 0);
2099 		console_unlock();
2100 		return -EIO;
2101 	}
2102 #endif
2103 
2104 	console_unlock();
2105 
2106 	pdev->dev.power.power_state = state;
2107 
2108 	return 0;
2109 }
2110 
2111 static int __maybe_unused atyfb_pci_suspend(struct device *dev)
2112 {
2113 	return atyfb_pci_suspend_late(dev, PMSG_SUSPEND);
2114 }
2115 
2116 static int __maybe_unused atyfb_pci_hibernate(struct device *dev)
2117 {
2118 	return atyfb_pci_suspend_late(dev, PMSG_HIBERNATE);
2119 }
2120 
2121 static int __maybe_unused atyfb_pci_freeze(struct device *dev)
2122 {
2123 	return atyfb_pci_suspend_late(dev, PMSG_FREEZE);
2124 }
2125 
2126 static void aty_resume_chip(struct fb_info *info)
2127 {
2128 	struct atyfb_par *par = info->par;
2129 
2130 	aty_st_le32(MEM_CNTL, par->mem_cntl, par);
2131 
2132 	if (par->pll_ops->resume_pll)
2133 		par->pll_ops->resume_pll(info, &par->pll);
2134 
2135 	if (par->aux_start)
2136 		aty_st_le32(BUS_CNTL,
2137 			aty_ld_le32(BUS_CNTL, par) | BUS_APER_REG_DIS, par);
2138 }
2139 
2140 static int __maybe_unused atyfb_pci_resume(struct device *dev)
2141 {
2142 	struct pci_dev *pdev = to_pci_dev(dev);
2143 	struct fb_info *info = pci_get_drvdata(pdev);
2144 	struct atyfb_par *par = (struct atyfb_par *) info->par;
2145 
2146 	if (pdev->dev.power.power_state.event == PM_EVENT_ON)
2147 		return 0;
2148 
2149 	console_lock();
2150 
2151 	/*
2152 	 * PCI state will have been restored by the core, so
2153 	 * we should be in D0 now with our config space fully
2154 	 * restored
2155 	 */
2156 
2157 #ifdef CONFIG_PPC_PMAC
2158 	if (machine_is(powermac) &&
2159 	    pdev->dev.power.power_state.event == PM_EVENT_SUSPEND)
2160 		aty_power_mgmt(0, par);
2161 #endif
2162 
2163 	aty_resume_chip(info);
2164 
2165 	par->asleep = 0;
2166 
2167 	/* Restore display */
2168 	atyfb_set_par(info);
2169 
2170 	/* Refresh */
2171 	fb_set_suspend(info, 0);
2172 
2173 	/* Unblank */
2174 	par->lock_blank = 0;
2175 	atyfb_blank(FB_BLANK_UNBLANK, info);
2176 
2177 	console_unlock();
2178 
2179 	pdev->dev.power.power_state = PMSG_ON;
2180 
2181 	return 0;
2182 }
2183 
2184 static const struct dev_pm_ops atyfb_pci_pm_ops = {
2185 #ifdef CONFIG_PM_SLEEP
2186 	.suspend	= atyfb_pci_suspend,
2187 	.resume		= atyfb_pci_resume,
2188 	.freeze		= atyfb_pci_freeze,
2189 	.thaw		= atyfb_pci_resume,
2190 	.poweroff	= atyfb_pci_hibernate,
2191 	.restore	= atyfb_pci_resume,
2192 #endif /* CONFIG_PM_SLEEP */
2193 };
2194 
2195 #endif /*  defined(CONFIG_PCI) */
2196 
2197 /* Backlight */
2198 #ifdef CONFIG_FB_ATY_BACKLIGHT
2199 #define MAX_LEVEL 0xFF
2200 
2201 static int aty_bl_get_level_brightness(struct atyfb_par *par, int level)
2202 {
2203 	struct fb_info *info = pci_get_drvdata(par->pdev);
2204 	int atylevel;
2205 
2206 	/* Get and convert the value */
2207 	/* No locking of bl_curve since we read a single value */
2208 	atylevel = info->bl_curve[level] * FB_BACKLIGHT_MAX / MAX_LEVEL;
2209 
2210 	if (atylevel < 0)
2211 		atylevel = 0;
2212 	else if (atylevel > MAX_LEVEL)
2213 		atylevel = MAX_LEVEL;
2214 
2215 	return atylevel;
2216 }
2217 
2218 static int aty_bl_update_status(struct backlight_device *bd)
2219 {
2220 	struct atyfb_par *par = bl_get_data(bd);
2221 	unsigned int reg = aty_ld_lcd(LCD_MISC_CNTL, par);
2222 	int level = backlight_get_brightness(bd);
2223 
2224 	reg |= (BLMOD_EN | BIASMOD_EN);
2225 	if (level > 0) {
2226 		reg &= ~BIAS_MOD_LEVEL_MASK;
2227 		reg |= (aty_bl_get_level_brightness(par, level) << BIAS_MOD_LEVEL_SHIFT);
2228 	} else {
2229 		reg &= ~BIAS_MOD_LEVEL_MASK;
2230 		reg |= (aty_bl_get_level_brightness(par, 0) << BIAS_MOD_LEVEL_SHIFT);
2231 	}
2232 	aty_st_lcd(LCD_MISC_CNTL, reg, par);
2233 
2234 	return 0;
2235 }
2236 
2237 static const struct backlight_ops aty_bl_data = {
2238 	.update_status	= aty_bl_update_status,
2239 };
2240 
2241 static void aty_bl_init(struct atyfb_par *par)
2242 {
2243 	struct backlight_properties props;
2244 	struct fb_info *info = pci_get_drvdata(par->pdev);
2245 	struct backlight_device *bd;
2246 	char name[12];
2247 
2248 #ifdef CONFIG_PMAC_BACKLIGHT
2249 	if (!pmac_has_backlight_type("ati"))
2250 		return;
2251 #endif
2252 
2253 	snprintf(name, sizeof(name), "atybl%d", info->node);
2254 
2255 	memset(&props, 0, sizeof(struct backlight_properties));
2256 	props.type = BACKLIGHT_RAW;
2257 	props.max_brightness = FB_BACKLIGHT_LEVELS - 1;
2258 	bd = backlight_device_register(name, info->device, par, &aty_bl_data,
2259 				       &props);
2260 	if (IS_ERR(bd)) {
2261 		info->bl_dev = NULL;
2262 		printk(KERN_WARNING "aty: Backlight registration failed\n");
2263 		goto error;
2264 	}
2265 
2266 	info->bl_dev = bd;
2267 	fb_bl_default_curve(info, 0,
2268 			    0x3F * FB_BACKLIGHT_MAX / MAX_LEVEL,
2269 			    0xFF * FB_BACKLIGHT_MAX / MAX_LEVEL);
2270 
2271 	bd->props.brightness = bd->props.max_brightness;
2272 	bd->props.power = FB_BLANK_UNBLANK;
2273 	backlight_update_status(bd);
2274 
2275 	printk("aty: Backlight initialized (%s)\n", name);
2276 
2277 	return;
2278 
2279 error:
2280 	return;
2281 }
2282 
2283 #ifdef CONFIG_PCI
2284 static void aty_bl_exit(struct backlight_device *bd)
2285 {
2286 	backlight_device_unregister(bd);
2287 	printk("aty: Backlight unloaded\n");
2288 }
2289 #endif /* CONFIG_PCI */
2290 
2291 #endif /* CONFIG_FB_ATY_BACKLIGHT */
2292 
2293 static void aty_calc_mem_refresh(struct atyfb_par *par, int xclk)
2294 {
2295 	static const int ragepro_tbl[] = {
2296 		44, 50, 55, 66, 75, 80, 100
2297 	};
2298 	static const int ragexl_tbl[] = {
2299 		50, 66, 75, 83, 90, 95, 100, 105,
2300 		110, 115, 120, 125, 133, 143, 166
2301 	};
2302 	const int *refresh_tbl;
2303 	int i, size;
2304 
2305 	if (M64_HAS(XL_MEM)) {
2306 		refresh_tbl = ragexl_tbl;
2307 		size = ARRAY_SIZE(ragexl_tbl);
2308 	} else {
2309 		refresh_tbl = ragepro_tbl;
2310 		size = ARRAY_SIZE(ragepro_tbl);
2311 	}
2312 
2313 	for (i = 0; i < size; i++) {
2314 		if (xclk < refresh_tbl[i])
2315 			break;
2316 	}
2317 	par->mem_refresh_rate = i;
2318 }
2319 
2320 /*
2321  * Initialisation
2322  */
2323 
2324 static struct fb_info *fb_list = NULL;
2325 
2326 #if defined(__i386__) && defined(CONFIG_FB_ATY_GENERIC_LCD)
2327 static int atyfb_get_timings_from_lcd(struct atyfb_par *par,
2328 				      struct fb_var_screeninfo *var)
2329 {
2330 	int ret = -EINVAL;
2331 
2332 	if (par->lcd_table != 0 && (aty_ld_lcd(LCD_GEN_CNTL, par) & LCD_ON)) {
2333 		*var = default_var;
2334 		var->xres = var->xres_virtual = par->lcd_hdisp;
2335 		var->right_margin = par->lcd_right_margin;
2336 		var->left_margin = par->lcd_hblank_len -
2337 			(par->lcd_right_margin + par->lcd_hsync_dly +
2338 			 par->lcd_hsync_len);
2339 		var->hsync_len = par->lcd_hsync_len + par->lcd_hsync_dly;
2340 		var->yres = var->yres_virtual = par->lcd_vdisp;
2341 		var->lower_margin = par->lcd_lower_margin;
2342 		var->upper_margin = par->lcd_vblank_len -
2343 			(par->lcd_lower_margin + par->lcd_vsync_len);
2344 		var->vsync_len = par->lcd_vsync_len;
2345 		var->pixclock = par->lcd_pixclock;
2346 		ret = 0;
2347 	}
2348 
2349 	return ret;
2350 }
2351 #endif /* defined(__i386__) && defined(CONFIG_FB_ATY_GENERIC_LCD) */
2352 
2353 static int aty_init(struct fb_info *info)
2354 {
2355 	struct atyfb_par *par = (struct atyfb_par *) info->par;
2356 	const char *ramname = NULL, *xtal;
2357 	int gtb_memsize, has_var = 0;
2358 	struct fb_var_screeninfo var;
2359 	int ret;
2360 #ifdef CONFIG_ATARI
2361 	u8 dac_type;
2362 #endif
2363 
2364 	init_waitqueue_head(&par->vblank.wait);
2365 	spin_lock_init(&par->int_lock);
2366 
2367 #ifdef CONFIG_FB_ATY_GX
2368 	if (!M64_HAS(INTEGRATED)) {
2369 		u32 stat0;
2370 		u8 dac_subtype, clk_type;
2371 		stat0 = aty_ld_le32(CNFG_STAT0, par);
2372 		par->bus_type = (stat0 >> 0) & 0x07;
2373 		par->ram_type = (stat0 >> 3) & 0x07;
2374 		ramname = aty_gx_ram[par->ram_type];
2375 		/* FIXME: clockchip/RAMDAC probing? */
2376 #ifdef CONFIG_ATARI
2377 		clk_type = CLK_ATI18818_1;
2378 		dac_type = (stat0 >> 9) & 0x07;
2379 		if (dac_type == 0x07)
2380 			dac_subtype = DAC_ATT20C408;
2381 		else
2382 			dac_subtype = (aty_ld_8(SCRATCH_REG1 + 1, par) & 0xF0) | dac_type;
2383 #else
2384 		dac_subtype = DAC_IBMRGB514;
2385 		clk_type = CLK_IBMRGB514;
2386 #endif
2387 		switch (dac_subtype) {
2388 		case DAC_IBMRGB514:
2389 			par->dac_ops = &aty_dac_ibm514;
2390 			break;
2391 #ifdef CONFIG_ATARI
2392 		case DAC_ATI68860_B:
2393 		case DAC_ATI68860_C:
2394 			par->dac_ops = &aty_dac_ati68860b;
2395 			break;
2396 		case DAC_ATT20C408:
2397 		case DAC_ATT21C498:
2398 			par->dac_ops = &aty_dac_att21c498;
2399 			break;
2400 #endif
2401 		default:
2402 			PRINTKI("aty_init: DAC type not implemented yet!\n");
2403 			par->dac_ops = &aty_dac_unsupported;
2404 			break;
2405 		}
2406 		switch (clk_type) {
2407 #ifdef CONFIG_ATARI
2408 		case CLK_ATI18818_1:
2409 			par->pll_ops = &aty_pll_ati18818_1;
2410 			break;
2411 #else
2412 		case CLK_IBMRGB514:
2413 			par->pll_ops = &aty_pll_ibm514;
2414 			break;
2415 #endif
2416 		default:
2417 			PRINTKI("aty_init: CLK type not implemented yet!");
2418 			par->pll_ops = &aty_pll_unsupported;
2419 			break;
2420 		}
2421 	}
2422 #endif /* CONFIG_FB_ATY_GX */
2423 #ifdef CONFIG_FB_ATY_CT
2424 	if (M64_HAS(INTEGRATED)) {
2425 		par->dac_ops = &aty_dac_ct;
2426 		par->pll_ops = &aty_pll_ct;
2427 		par->bus_type = PCI;
2428 		par->ram_type = (aty_ld_le32(CNFG_STAT0, par) & 0x07);
2429 		if (M64_HAS(XL_MEM))
2430 			ramname = aty_xl_ram[par->ram_type];
2431 		else
2432 			ramname = aty_ct_ram[par->ram_type];
2433 		/* for many chips, the mclk is 67 MHz for SDRAM, 63 MHz otherwise */
2434 		if (par->pll_limits.mclk == 67 && par->ram_type < SDRAM)
2435 			par->pll_limits.mclk = 63;
2436 		/* Mobility + 32bit memory interface need halved XCLK. */
2437 		if (M64_HAS(MOBIL_BUS) && par->ram_type == SDRAM32)
2438 			par->pll_limits.xclk = (par->pll_limits.xclk + 1) >> 1;
2439 	}
2440 #endif
2441 #ifdef CONFIG_PPC_PMAC
2442 	/*
2443 	 * The Apple iBook1 uses non-standard memory frequencies.
2444 	 * We detect it and set the frequency manually.
2445 	 */
2446 	if (of_machine_is_compatible("PowerBook2,1")) {
2447 		par->pll_limits.mclk = 70;
2448 		par->pll_limits.xclk = 53;
2449 	}
2450 #endif
2451 
2452 	/* Allow command line to override clocks. */
2453 	if (pll)
2454 		par->pll_limits.pll_max = pll;
2455 	if (mclk)
2456 		par->pll_limits.mclk = mclk;
2457 	if (xclk)
2458 		par->pll_limits.xclk = xclk;
2459 
2460 	aty_calc_mem_refresh(par, par->pll_limits.xclk);
2461 	par->pll_per = 1000000/par->pll_limits.pll_max;
2462 	par->mclk_per = 1000000/par->pll_limits.mclk;
2463 	par->xclk_per = 1000000/par->pll_limits.xclk;
2464 
2465 	par->ref_clk_per = 1000000000000ULL / 14318180;
2466 	xtal = "14.31818";
2467 
2468 #ifdef CONFIG_FB_ATY_CT
2469 	if (M64_HAS(GTB_DSP)) {
2470 		u8 pll_ref_div = aty_ld_pll_ct(PLL_REF_DIV, par);
2471 
2472 		if (pll_ref_div) {
2473 			int diff1, diff2;
2474 			diff1 = 510 * 14 / pll_ref_div - par->pll_limits.pll_max;
2475 			diff2 = 510 * 29 / pll_ref_div - par->pll_limits.pll_max;
2476 			if (diff1 < 0)
2477 				diff1 = -diff1;
2478 			if (diff2 < 0)
2479 				diff2 = -diff2;
2480 			if (diff2 < diff1) {
2481 				par->ref_clk_per = 1000000000000ULL / 29498928;
2482 				xtal = "29.498928";
2483 			}
2484 		}
2485 	}
2486 #endif /* CONFIG_FB_ATY_CT */
2487 
2488 	/* save previous video mode */
2489 	aty_get_crtc(par, &par->saved_crtc);
2490 	if (par->pll_ops->get_pll)
2491 		par->pll_ops->get_pll(info, &par->saved_pll);
2492 
2493 	par->mem_cntl = aty_ld_le32(MEM_CNTL, par);
2494 	gtb_memsize = M64_HAS(GTB_DSP);
2495 	if (gtb_memsize)
2496 		/* 0xF used instead of MEM_SIZE_ALIAS */
2497 		switch (par->mem_cntl & 0xF) {
2498 		case MEM_SIZE_512K:
2499 			info->fix.smem_len = 0x80000;
2500 			break;
2501 		case MEM_SIZE_1M:
2502 			info->fix.smem_len = 0x100000;
2503 			break;
2504 		case MEM_SIZE_2M_GTB:
2505 			info->fix.smem_len = 0x200000;
2506 			break;
2507 		case MEM_SIZE_4M_GTB:
2508 			info->fix.smem_len = 0x400000;
2509 			break;
2510 		case MEM_SIZE_6M_GTB:
2511 			info->fix.smem_len = 0x600000;
2512 			break;
2513 		case MEM_SIZE_8M_GTB:
2514 			info->fix.smem_len = 0x800000;
2515 			break;
2516 		default:
2517 			info->fix.smem_len = 0x80000;
2518 	} else
2519 		switch (par->mem_cntl & MEM_SIZE_ALIAS) {
2520 		case MEM_SIZE_512K:
2521 			info->fix.smem_len = 0x80000;
2522 			break;
2523 		case MEM_SIZE_1M:
2524 			info->fix.smem_len = 0x100000;
2525 			break;
2526 		case MEM_SIZE_2M:
2527 			info->fix.smem_len = 0x200000;
2528 			break;
2529 		case MEM_SIZE_4M:
2530 			info->fix.smem_len = 0x400000;
2531 			break;
2532 		case MEM_SIZE_6M:
2533 			info->fix.smem_len = 0x600000;
2534 			break;
2535 		case MEM_SIZE_8M:
2536 			info->fix.smem_len = 0x800000;
2537 			break;
2538 		default:
2539 			info->fix.smem_len = 0x80000;
2540 		}
2541 
2542 	if (M64_HAS(MAGIC_VRAM_SIZE)) {
2543 		if (aty_ld_le32(CNFG_STAT1, par) & 0x40000000)
2544 			info->fix.smem_len += 0x400000;
2545 	}
2546 
2547 	if (vram) {
2548 		info->fix.smem_len = vram * 1024;
2549 		par->mem_cntl &= ~(gtb_memsize ? 0xF : MEM_SIZE_ALIAS);
2550 		if (info->fix.smem_len <= 0x80000)
2551 			par->mem_cntl |= MEM_SIZE_512K;
2552 		else if (info->fix.smem_len <= 0x100000)
2553 			par->mem_cntl |= MEM_SIZE_1M;
2554 		else if (info->fix.smem_len <= 0x200000)
2555 			par->mem_cntl |= gtb_memsize ? MEM_SIZE_2M_GTB : MEM_SIZE_2M;
2556 		else if (info->fix.smem_len <= 0x400000)
2557 			par->mem_cntl |= gtb_memsize ? MEM_SIZE_4M_GTB : MEM_SIZE_4M;
2558 		else if (info->fix.smem_len <= 0x600000)
2559 			par->mem_cntl |= gtb_memsize ? MEM_SIZE_6M_GTB : MEM_SIZE_6M;
2560 		else
2561 			par->mem_cntl |= gtb_memsize ? MEM_SIZE_8M_GTB : MEM_SIZE_8M;
2562 		aty_st_le32(MEM_CNTL, par->mem_cntl, par);
2563 	}
2564 
2565 	/*
2566 	 * Reg Block 0 (CT-compatible block) is at mmio_start
2567 	 * Reg Block 1 (multimedia extensions) is at mmio_start - 0x400
2568 	 */
2569 	if (M64_HAS(GX)) {
2570 		info->fix.mmio_len = 0x400;
2571 		info->fix.accel = FB_ACCEL_ATI_MACH64GX;
2572 	} else if (M64_HAS(CT)) {
2573 		info->fix.mmio_len = 0x400;
2574 		info->fix.accel = FB_ACCEL_ATI_MACH64CT;
2575 	} else if (M64_HAS(VT)) {
2576 		info->fix.mmio_start -= 0x400;
2577 		info->fix.mmio_len = 0x800;
2578 		info->fix.accel = FB_ACCEL_ATI_MACH64VT;
2579 	} else {/* GT */
2580 		info->fix.mmio_start -= 0x400;
2581 		info->fix.mmio_len = 0x800;
2582 		info->fix.accel = FB_ACCEL_ATI_MACH64GT;
2583 	}
2584 
2585 	PRINTKI("%d%c %s, %s MHz XTAL, %d MHz PLL, %d Mhz MCLK, %d MHz XCLK\n",
2586 		info->fix.smem_len == 0x80000 ? 512 : (info->fix.smem_len>>20),
2587 		info->fix.smem_len == 0x80000 ? 'K' : 'M', ramname, xtal,
2588 		par->pll_limits.pll_max, par->pll_limits.mclk,
2589 		par->pll_limits.xclk);
2590 
2591 #if defined(DEBUG) && defined(CONFIG_FB_ATY_CT)
2592 	if (M64_HAS(INTEGRATED)) {
2593 		int i;
2594 		printk("debug atyfb: BUS_CNTL DAC_CNTL MEM_CNTL "
2595 		       "EXT_MEM_CNTL CRTC_GEN_CNTL DSP_CONFIG "
2596 		       "DSP_ON_OFF CLOCK_CNTL\n"
2597 		       "debug atyfb: %08x %08x %08x "
2598 		       "%08x     %08x      %08x   "
2599 		       "%08x   %08x\n"
2600 		       "debug atyfb: PLL",
2601 		       aty_ld_le32(BUS_CNTL, par),
2602 		       aty_ld_le32(DAC_CNTL, par),
2603 		       aty_ld_le32(MEM_CNTL, par),
2604 		       aty_ld_le32(EXT_MEM_CNTL, par),
2605 		       aty_ld_le32(CRTC_GEN_CNTL, par),
2606 		       aty_ld_le32(DSP_CONFIG, par),
2607 		       aty_ld_le32(DSP_ON_OFF, par),
2608 		       aty_ld_le32(CLOCK_CNTL, par));
2609 		for (i = 0; i < 40; i++)
2610 			pr_cont(" %02x", aty_ld_pll_ct(i, par));
2611 		pr_cont("\n");
2612 	}
2613 #endif
2614 	if (par->pll_ops->init_pll)
2615 		par->pll_ops->init_pll(info, &par->pll);
2616 	if (par->pll_ops->resume_pll)
2617 		par->pll_ops->resume_pll(info, &par->pll);
2618 
2619 	aty_fudge_framebuffer_len(info);
2620 
2621 	/*
2622 	 * Disable register access through the linear aperture
2623 	 * if the auxiliary aperture is used so we can access
2624 	 * the full 8 MB of video RAM on 8 MB boards.
2625 	 */
2626 	if (par->aux_start)
2627 		aty_st_le32(BUS_CNTL, aty_ld_le32(BUS_CNTL, par) |
2628 			    BUS_APER_REG_DIS, par);
2629 
2630 	if (!nomtrr)
2631 		/*
2632 		 * Only the ioremap_wc()'d area will get WC here
2633 		 * since ioremap_uc() was used on the entire PCI BAR.
2634 		 */
2635 		par->wc_cookie = arch_phys_wc_add(par->res_start,
2636 						  par->res_size);
2637 
2638 	info->fbops = &atyfb_ops;
2639 	info->pseudo_palette = par->pseudo_palette;
2640 	info->flags = FBINFO_HWACCEL_IMAGEBLIT |
2641 		      FBINFO_HWACCEL_FILLRECT  |
2642 		      FBINFO_HWACCEL_COPYAREA  |
2643 		      FBINFO_HWACCEL_YPAN      |
2644 		      FBINFO_READS_FAST;
2645 
2646 #ifdef CONFIG_PMAC_BACKLIGHT
2647 	if (M64_HAS(G3_PB_1_1) && of_machine_is_compatible("PowerBook1,1")) {
2648 		/*
2649 		 * these bits let the 101 powerbook
2650 		 * wake up from sleep -- paulus
2651 		 */
2652 		aty_st_lcd(POWER_MANAGEMENT, aty_ld_lcd(POWER_MANAGEMENT, par) |
2653 			   USE_F32KHZ | TRISTATE_MEM_EN, par);
2654 	} else
2655 #endif
2656 
2657 	memset(&var, 0, sizeof(var));
2658 #ifdef CONFIG_PPC
2659 	if (machine_is(powermac)) {
2660 		/*
2661 		 * FIXME: The NVRAM stuff should be put in a Mac-specific file,
2662 		 *        as it applies to all Mac video cards
2663 		 */
2664 		if (mode) {
2665 			if (mac_find_mode(&var, info, mode, 8))
2666 				has_var = 1;
2667 		} else {
2668 			if (default_vmode == VMODE_CHOOSE) {
2669 				int sense;
2670 				if (M64_HAS(G3_PB_1024x768))
2671 					/* G3 PowerBook with 1024x768 LCD */
2672 					default_vmode = VMODE_1024_768_60;
2673 				else if (of_machine_is_compatible("iMac"))
2674 					default_vmode = VMODE_1024_768_75;
2675 				else if (of_machine_is_compatible("PowerBook2,1"))
2676 					/* iBook with 800x600 LCD */
2677 					default_vmode = VMODE_800_600_60;
2678 				else
2679 					default_vmode = VMODE_640_480_67;
2680 				sense = read_aty_sense(par);
2681 				PRINTKI("monitor sense=%x, mode %d\n",
2682 					sense,  mac_map_monitor_sense(sense));
2683 			}
2684 			if (default_vmode <= 0 || default_vmode > VMODE_MAX)
2685 				default_vmode = VMODE_640_480_60;
2686 			if (default_cmode < CMODE_8 || default_cmode > CMODE_32)
2687 				default_cmode = CMODE_8;
2688 			if (!mac_vmode_to_var(default_vmode, default_cmode,
2689 					      &var))
2690 				has_var = 1;
2691 		}
2692 	}
2693 
2694 #endif /* !CONFIG_PPC */
2695 
2696 #if defined(__i386__) && defined(CONFIG_FB_ATY_GENERIC_LCD)
2697 	if (!atyfb_get_timings_from_lcd(par, &var))
2698 		has_var = 1;
2699 #endif
2700 
2701 	if (mode && fb_find_mode(&var, info, mode, NULL, 0, &defmode, 8))
2702 		has_var = 1;
2703 
2704 	if (!has_var)
2705 		var = default_var;
2706 
2707 	if (noaccel)
2708 		var.accel_flags &= ~FB_ACCELF_TEXT;
2709 	else
2710 		var.accel_flags |= FB_ACCELF_TEXT;
2711 
2712 	if (comp_sync != -1) {
2713 		if (!comp_sync)
2714 			var.sync &= ~FB_SYNC_COMP_HIGH_ACT;
2715 		else
2716 			var.sync |= FB_SYNC_COMP_HIGH_ACT;
2717 	}
2718 
2719 	if (var.yres == var.yres_virtual) {
2720 		u32 videoram = (info->fix.smem_len - (PAGE_SIZE << 2));
2721 		var.yres_virtual = ((videoram * 8) / var.bits_per_pixel) / var.xres_virtual;
2722 		if (var.yres_virtual < var.yres)
2723 			var.yres_virtual = var.yres;
2724 	}
2725 
2726 	ret = atyfb_check_var(&var, info);
2727 	if (ret) {
2728 		PRINTKE("can't set default video mode\n");
2729 		goto aty_init_exit;
2730 	}
2731 
2732 #ifdef CONFIG_FB_ATY_CT
2733 	if (!noaccel && M64_HAS(INTEGRATED))
2734 		aty_init_cursor(info, &atyfb_ops);
2735 #endif /* CONFIG_FB_ATY_CT */
2736 	info->var = var;
2737 
2738 	ret = fb_alloc_cmap(&info->cmap, 256, 0);
2739 	if (ret < 0)
2740 		goto aty_init_exit;
2741 
2742 	ret = register_framebuffer(info);
2743 	if (ret < 0) {
2744 		fb_dealloc_cmap(&info->cmap);
2745 		goto aty_init_exit;
2746 	}
2747 
2748 	if (M64_HAS(MOBIL_BUS) && backlight) {
2749 #ifdef CONFIG_FB_ATY_BACKLIGHT
2750 		aty_bl_init(par);
2751 #endif
2752 	}
2753 
2754 	fb_list = info;
2755 
2756 	PRINTKI("fb%d: %s frame buffer device on %s\n",
2757 		info->node, info->fix.id, par->bus_type == ISA ? "ISA" : "PCI");
2758 	return 0;
2759 
2760 aty_init_exit:
2761 	/* restore video mode */
2762 	aty_set_crtc(par, &par->saved_crtc);
2763 	par->pll_ops->set_pll(info, &par->saved_pll);
2764 	arch_phys_wc_del(par->wc_cookie);
2765 
2766 	return ret;
2767 }
2768 
2769 #if defined(CONFIG_ATARI) && !defined(MODULE)
2770 static int store_video_par(char *video_str, unsigned char m64_num)
2771 {
2772 	char *p;
2773 	unsigned long vmembase, size, guiregbase;
2774 
2775 	PRINTKI("store_video_par() '%s' \n", video_str);
2776 
2777 	if (!(p = strsep(&video_str, ";")) || !*p)
2778 		goto mach64_invalid;
2779 	vmembase = simple_strtoul(p, NULL, 0);
2780 	if (!(p = strsep(&video_str, ";")) || !*p)
2781 		goto mach64_invalid;
2782 	size = simple_strtoul(p, NULL, 0);
2783 	if (!(p = strsep(&video_str, ";")) || !*p)
2784 		goto mach64_invalid;
2785 	guiregbase = simple_strtoul(p, NULL, 0);
2786 
2787 	phys_vmembase[m64_num] = vmembase;
2788 	phys_size[m64_num] = size;
2789 	phys_guiregbase[m64_num] = guiregbase;
2790 	PRINTKI("stored them all: $%08lX $%08lX $%08lX \n", vmembase, size,
2791 		guiregbase);
2792 	return 0;
2793 
2794  mach64_invalid:
2795 	phys_vmembase[m64_num] = 0;
2796 	return -1;
2797 }
2798 #endif /* CONFIG_ATARI && !MODULE */
2799 
2800 /*
2801  * Blank the display.
2802  */
2803 
2804 static int atyfb_blank(int blank, struct fb_info *info)
2805 {
2806 	struct atyfb_par *par = (struct atyfb_par *) info->par;
2807 	u32 gen_cntl;
2808 
2809 	if (par->lock_blank || par->asleep)
2810 		return 0;
2811 
2812 #ifdef CONFIG_FB_ATY_GENERIC_LCD
2813 	if (par->lcd_table && blank > FB_BLANK_NORMAL &&
2814 	    (aty_ld_lcd(LCD_GEN_CNTL, par) & LCD_ON)) {
2815 		u32 pm = aty_ld_lcd(POWER_MANAGEMENT, par);
2816 		pm &= ~PWR_BLON;
2817 		aty_st_lcd(POWER_MANAGEMENT, pm, par);
2818 	}
2819 #endif
2820 
2821 	gen_cntl = aty_ld_le32(CRTC_GEN_CNTL, par);
2822 	gen_cntl &= ~0x400004c;
2823 	switch (blank) {
2824 	case FB_BLANK_UNBLANK:
2825 		break;
2826 	case FB_BLANK_NORMAL:
2827 		gen_cntl |= 0x4000040;
2828 		break;
2829 	case FB_BLANK_VSYNC_SUSPEND:
2830 		gen_cntl |= 0x4000048;
2831 		break;
2832 	case FB_BLANK_HSYNC_SUSPEND:
2833 		gen_cntl |= 0x4000044;
2834 		break;
2835 	case FB_BLANK_POWERDOWN:
2836 		gen_cntl |= 0x400004c;
2837 		break;
2838 	}
2839 	aty_st_le32(CRTC_GEN_CNTL, gen_cntl, par);
2840 
2841 #ifdef CONFIG_FB_ATY_GENERIC_LCD
2842 	if (par->lcd_table && blank <= FB_BLANK_NORMAL &&
2843 	    (aty_ld_lcd(LCD_GEN_CNTL, par) & LCD_ON)) {
2844 		u32 pm = aty_ld_lcd(POWER_MANAGEMENT, par);
2845 		pm |= PWR_BLON;
2846 		aty_st_lcd(POWER_MANAGEMENT, pm, par);
2847 	}
2848 #endif
2849 
2850 	return 0;
2851 }
2852 
2853 static void aty_st_pal(u_int regno, u_int red, u_int green, u_int blue,
2854 		       const struct atyfb_par *par)
2855 {
2856 	aty_st_8(DAC_W_INDEX, regno, par);
2857 	aty_st_8(DAC_DATA, red, par);
2858 	aty_st_8(DAC_DATA, green, par);
2859 	aty_st_8(DAC_DATA, blue, par);
2860 }
2861 
2862 /*
2863  * Set a single color register. The values supplied are already
2864  * rounded down to the hardware's capabilities (according to the
2865  * entries in the var structure). Return != 0 for invalid regno.
2866  * !! 4 & 8 =  PSEUDO, > 8 = DIRECTCOLOR
2867  */
2868 
2869 static int atyfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
2870 			   u_int transp, struct fb_info *info)
2871 {
2872 	struct atyfb_par *par = (struct atyfb_par *) info->par;
2873 	int i, depth;
2874 	u32 *pal = info->pseudo_palette;
2875 
2876 	depth = info->var.bits_per_pixel;
2877 	if (depth == 16)
2878 		depth = (info->var.green.length == 5) ? 15 : 16;
2879 
2880 	if (par->asleep)
2881 		return 0;
2882 
2883 	if (regno > 255 ||
2884 	    (depth == 16 && regno > 63) ||
2885 	    (depth == 15 && regno > 31))
2886 		return 1;
2887 
2888 	red >>= 8;
2889 	green >>= 8;
2890 	blue >>= 8;
2891 
2892 	par->palette[regno].red = red;
2893 	par->palette[regno].green = green;
2894 	par->palette[regno].blue = blue;
2895 
2896 	if (regno < 16) {
2897 		switch (depth) {
2898 		case 15:
2899 			pal[regno] = (regno << 10) | (regno << 5) | regno;
2900 			break;
2901 		case 16:
2902 			pal[regno] = (regno << 11) | (regno << 5) | regno;
2903 			break;
2904 		case 24:
2905 			pal[regno] = (regno << 16) | (regno << 8) | regno;
2906 			break;
2907 		case 32:
2908 			i = (regno << 8) | regno;
2909 			pal[regno] = (i << 16) | i;
2910 			break;
2911 		}
2912 	}
2913 
2914 	i = aty_ld_8(DAC_CNTL, par) & 0xfc;
2915 	if (M64_HAS(EXTRA_BRIGHT))
2916 		i |= 0x2; /* DAC_CNTL | 0x2 turns off the extra brightness for gt */
2917 	aty_st_8(DAC_CNTL, i, par);
2918 	aty_st_8(DAC_MASK, 0xff, par);
2919 
2920 	if (M64_HAS(INTEGRATED)) {
2921 		if (depth == 16) {
2922 			if (regno < 32)
2923 				aty_st_pal(regno << 3, red,
2924 					   par->palette[regno << 1].green,
2925 					   blue, par);
2926 			red = par->palette[regno >> 1].red;
2927 			blue = par->palette[regno >> 1].blue;
2928 			regno <<= 2;
2929 		} else if (depth == 15) {
2930 			regno <<= 3;
2931 			for (i = 0; i < 8; i++)
2932 				aty_st_pal(regno + i, red, green, blue, par);
2933 		}
2934 	}
2935 	aty_st_pal(regno, red, green, blue, par);
2936 
2937 	return 0;
2938 }
2939 
2940 #ifdef CONFIG_PCI
2941 
2942 #ifdef __sparc__
2943 
2944 static int atyfb_setup_sparc(struct pci_dev *pdev, struct fb_info *info,
2945 			     unsigned long addr)
2946 {
2947 	struct atyfb_par *par = info->par;
2948 	struct device_node *dp;
2949 	u32 mem, chip_id;
2950 	int i, j, ret;
2951 
2952 	/*
2953 	 * Map memory-mapped registers.
2954 	 */
2955 	par->ati_regbase = (void *)addr + 0x7ffc00UL;
2956 	info->fix.mmio_start = addr + 0x7ffc00UL;
2957 
2958 	/*
2959 	 * Map in big-endian aperture.
2960 	 */
2961 	info->screen_base = (char *) (addr + 0x800000UL);
2962 	info->fix.smem_start = addr + 0x800000UL;
2963 
2964 	/*
2965 	 * Figure mmap addresses from PCI config space.
2966 	 * Split Framebuffer in big- and little-endian halfs.
2967 	 */
2968 	for (i = 0; i < 6 && pdev->resource[i].start; i++)
2969 		/* nothing */ ;
2970 	j = i + 4;
2971 
2972 	par->mmap_map = kcalloc(j, sizeof(*par->mmap_map), GFP_ATOMIC);
2973 	if (!par->mmap_map) {
2974 		PRINTKE("atyfb_setup_sparc() can't alloc mmap_map\n");
2975 		return -ENOMEM;
2976 	}
2977 
2978 	for (i = 0, j = 2; i < 6 && pdev->resource[i].start; i++) {
2979 		struct resource *rp = &pdev->resource[i];
2980 		int io, breg = PCI_BASE_ADDRESS_0 + (i << 2);
2981 		unsigned long base;
2982 		u32 size, pbase;
2983 
2984 		base = rp->start;
2985 
2986 		io = (rp->flags & IORESOURCE_IO);
2987 
2988 		size = rp->end - base + 1;
2989 
2990 		pci_read_config_dword(pdev, breg, &pbase);
2991 
2992 		if (io)
2993 			size &= ~1;
2994 
2995 		/*
2996 		 * Map the framebuffer a second time, this time without
2997 		 * the braindead _PAGE_IE setting. This is used by the
2998 		 * fixed Xserver, but we need to maintain the old mapping
2999 		 * to stay compatible with older ones...
3000 		 */
3001 		if (base == addr) {
3002 			par->mmap_map[j].voff = (pbase + 0x10000000) & PAGE_MASK;
3003 			par->mmap_map[j].poff = base & PAGE_MASK;
3004 			par->mmap_map[j].size = (size + ~PAGE_MASK) & PAGE_MASK;
3005 			par->mmap_map[j].prot_mask = _PAGE_CACHE;
3006 			par->mmap_map[j].prot_flag = _PAGE_E;
3007 			j++;
3008 		}
3009 
3010 		/*
3011 		 * Here comes the old framebuffer mapping with _PAGE_IE
3012 		 * set for the big endian half of the framebuffer...
3013 		 */
3014 		if (base == addr) {
3015 			par->mmap_map[j].voff = (pbase + 0x800000) & PAGE_MASK;
3016 			par->mmap_map[j].poff = (base + 0x800000) & PAGE_MASK;
3017 			par->mmap_map[j].size = 0x800000;
3018 			par->mmap_map[j].prot_mask = _PAGE_CACHE;
3019 			par->mmap_map[j].prot_flag = _PAGE_E | _PAGE_IE;
3020 			size -= 0x800000;
3021 			j++;
3022 		}
3023 
3024 		par->mmap_map[j].voff = pbase & PAGE_MASK;
3025 		par->mmap_map[j].poff = base & PAGE_MASK;
3026 		par->mmap_map[j].size = (size + ~PAGE_MASK) & PAGE_MASK;
3027 		par->mmap_map[j].prot_mask = _PAGE_CACHE;
3028 		par->mmap_map[j].prot_flag = _PAGE_E;
3029 		j++;
3030 	}
3031 
3032 	ret = correct_chipset(par);
3033 	if (ret)
3034 		return ret;
3035 
3036 	if (IS_XL(pdev->device)) {
3037 		/*
3038 		 * Fix PROMs idea of MEM_CNTL settings...
3039 		 */
3040 		mem = aty_ld_le32(MEM_CNTL, par);
3041 		chip_id = aty_ld_le32(CNFG_CHIP_ID, par);
3042 		if (((chip_id & CFG_CHIP_TYPE) == VT_CHIP_ID) && !((chip_id >> 24) & 1)) {
3043 			switch (mem & 0x0f) {
3044 			case 3:
3045 				mem = (mem & ~(0x0f)) | 2;
3046 				break;
3047 			case 7:
3048 				mem = (mem & ~(0x0f)) | 3;
3049 				break;
3050 			case 9:
3051 				mem = (mem & ~(0x0f)) | 4;
3052 				break;
3053 			case 11:
3054 				mem = (mem & ~(0x0f)) | 5;
3055 				break;
3056 			default:
3057 				break;
3058 			}
3059 			if ((aty_ld_le32(CNFG_STAT0, par) & 7) >= SDRAM)
3060 				mem &= ~(0x00700000);
3061 		}
3062 		mem &= ~(0xcf80e000);	/* Turn off all undocumented bits. */
3063 		aty_st_le32(MEM_CNTL, mem, par);
3064 	}
3065 
3066 	dp = pci_device_to_OF_node(pdev);
3067 	if (dp == of_console_device) {
3068 		struct fb_var_screeninfo *var = &default_var;
3069 		unsigned int N, P, Q, M, T, R;
3070 		struct crtc crtc;
3071 		u8 pll_regs[16];
3072 		u8 clock_cntl;
3073 
3074 		crtc.vxres = of_getintprop_default(dp, "width", 1024);
3075 		crtc.vyres = of_getintprop_default(dp, "height", 768);
3076 		var->bits_per_pixel = of_getintprop_default(dp, "depth", 8);
3077 		var->xoffset = var->yoffset = 0;
3078 		crtc.h_tot_disp = aty_ld_le32(CRTC_H_TOTAL_DISP, par);
3079 		crtc.h_sync_strt_wid = aty_ld_le32(CRTC_H_SYNC_STRT_WID, par);
3080 		crtc.v_tot_disp = aty_ld_le32(CRTC_V_TOTAL_DISP, par);
3081 		crtc.v_sync_strt_wid = aty_ld_le32(CRTC_V_SYNC_STRT_WID, par);
3082 		crtc.gen_cntl = aty_ld_le32(CRTC_GEN_CNTL, par);
3083 		aty_crtc_to_var(&crtc, var);
3084 
3085 		/*
3086 		 * Read the PLL to figure actual Refresh Rate.
3087 		 */
3088 		clock_cntl = aty_ld_8(CLOCK_CNTL, par);
3089 		/* DPRINTK("CLOCK_CNTL %02x\n", clock_cntl); */
3090 		for (i = 0; i < 16; i++)
3091 			pll_regs[i] = aty_ld_pll_ct(i, par);
3092 
3093 		/*
3094 		 * PLL Reference Divider M:
3095 		 */
3096 		M = pll_regs[PLL_REF_DIV];
3097 
3098 		/*
3099 		 * PLL Feedback Divider N (Dependent on CLOCK_CNTL):
3100 		 */
3101 		N = pll_regs[VCLK0_FB_DIV + (clock_cntl & 3)];
3102 
3103 		/*
3104 		 * PLL Post Divider P (Dependent on CLOCK_CNTL):
3105 		 */
3106 		P = aty_postdividers[((pll_regs[VCLK_POST_DIV] >> ((clock_cntl & 3) << 1)) & 3) |
3107 		                     ((pll_regs[PLL_EXT_CNTL] >> (2 + (clock_cntl & 3))) & 4)];
3108 
3109 		/*
3110 		 * PLL Divider Q:
3111 		 */
3112 		Q = N / P;
3113 
3114 		/*
3115 		 * Target Frequency:
3116 		 *
3117 		 *      T * M
3118 		 * Q = -------
3119 		 *      2 * R
3120 		 *
3121 		 * where R is XTALIN (= 14318 or 29498 kHz).
3122 		 */
3123 		if (IS_XL(pdev->device))
3124 			R = 29498;
3125 		else
3126 			R = 14318;
3127 
3128 		T = 2 * Q * R / M;
3129 
3130 		default_var.pixclock = 1000000000 / T;
3131 	}
3132 
3133 	return 0;
3134 }
3135 
3136 #else /* __sparc__ */
3137 
3138 #ifdef __i386__
3139 #ifdef CONFIG_FB_ATY_GENERIC_LCD
3140 static void aty_init_lcd(struct atyfb_par *par, u32 bios_base)
3141 {
3142 	u32 driv_inf_tab, sig;
3143 	u16 lcd_ofs;
3144 
3145 	/*
3146 	 * To support an LCD panel, we should know it's dimensions and
3147 	 *  it's desired pixel clock.
3148 	 * There are two ways to do it:
3149 	 *  - Check the startup video mode and calculate the panel
3150 	 *    size from it. This is unreliable.
3151 	 *  - Read it from the driver information table in the video BIOS.
3152 	 */
3153 	/* Address of driver information table is at offset 0x78. */
3154 	driv_inf_tab = bios_base + *((u16 *)(bios_base+0x78));
3155 
3156 	/* Check for the driver information table signature. */
3157 	sig = *(u32 *)driv_inf_tab;
3158 	if ((sig == 0x54504c24) || /* Rage LT pro */
3159 	    (sig == 0x544d5224) || /* Rage mobility */
3160 	    (sig == 0x54435824) || /* Rage XC */
3161 	    (sig == 0x544c5824)) { /* Rage XL */
3162 		PRINTKI("BIOS contains driver information table.\n");
3163 		lcd_ofs = *(u16 *)(driv_inf_tab + 10);
3164 		par->lcd_table = 0;
3165 		if (lcd_ofs != 0)
3166 			par->lcd_table = bios_base + lcd_ofs;
3167 	}
3168 
3169 	if (par->lcd_table != 0) {
3170 		char model[24];
3171 		char strbuf[16];
3172 		char refresh_rates_buf[100];
3173 		int id, tech, f, i, m, default_refresh_rate;
3174 		char *txtcolour;
3175 		char *txtmonitor;
3176 		char *txtdual;
3177 		char *txtformat;
3178 		u16 width, height, panel_type, refresh_rates;
3179 		u16 *lcdmodeptr;
3180 		u32 format;
3181 		u8 lcd_refresh_rates[16] = { 50, 56, 60, 67, 70, 72, 75, 76, 85,
3182 					     90, 100, 120, 140, 150, 160, 200 };
3183 		/*
3184 		 * The most important information is the panel size at
3185 		 * offset 25 and 27, but there's some other nice information
3186 		 * which we print to the screen.
3187 		 */
3188 		id = *(u8 *)par->lcd_table;
3189 		strscpy(model, (char *)par->lcd_table+1, sizeof(model));
3190 
3191 		width = par->lcd_width = *(u16 *)(par->lcd_table+25);
3192 		height = par->lcd_height = *(u16 *)(par->lcd_table+27);
3193 		panel_type = *(u16 *)(par->lcd_table+29);
3194 		if (panel_type & 1)
3195 			txtcolour = "colour";
3196 		else
3197 			txtcolour = "monochrome";
3198 		if (panel_type & 2)
3199 			txtdual = "dual (split) ";
3200 		else
3201 			txtdual = "";
3202 		tech = (panel_type >> 2) & 63;
3203 		switch (tech) {
3204 		case 0:
3205 			txtmonitor = "passive matrix";
3206 			break;
3207 		case 1:
3208 			txtmonitor = "active matrix";
3209 			break;
3210 		case 2:
3211 			txtmonitor = "active addressed STN";
3212 			break;
3213 		case 3:
3214 			txtmonitor = "EL";
3215 			break;
3216 		case 4:
3217 			txtmonitor = "plasma";
3218 			break;
3219 		default:
3220 			txtmonitor = "unknown";
3221 		}
3222 		format = *(u32 *)(par->lcd_table+57);
3223 		if (tech == 0 || tech == 2) {
3224 			switch (format & 7) {
3225 			case 0:
3226 				txtformat = "12 bit interface";
3227 				break;
3228 			case 1:
3229 				txtformat = "16 bit interface";
3230 				break;
3231 			case 2:
3232 				txtformat = "24 bit interface";
3233 				break;
3234 			default:
3235 				txtformat = "unknown format";
3236 			}
3237 		} else {
3238 			switch (format & 7) {
3239 			case 0:
3240 				txtformat = "8 colours";
3241 				break;
3242 			case 1:
3243 				txtformat = "512 colours";
3244 				break;
3245 			case 2:
3246 				txtformat = "4096 colours";
3247 				break;
3248 			case 4:
3249 				txtformat = "262144 colours (LT mode)";
3250 				break;
3251 			case 5:
3252 				txtformat = "16777216 colours";
3253 				break;
3254 			case 6:
3255 				txtformat = "262144 colours (FDPI-2 mode)";
3256 				break;
3257 			default:
3258 				txtformat = "unknown format";
3259 			}
3260 		}
3261 		PRINTKI("%s%s %s monitor detected: %s\n",
3262 			txtdual, txtcolour, txtmonitor, model);
3263 		PRINTKI("       id=%d, %dx%d pixels, %s\n",
3264 			id, width, height, txtformat);
3265 		refresh_rates_buf[0] = 0;
3266 		refresh_rates = *(u16 *)(par->lcd_table+62);
3267 		m = 1;
3268 		f = 0;
3269 		for (i = 0; i < 16; i++) {
3270 			if (refresh_rates & m) {
3271 				if (f == 0) {
3272 					sprintf(strbuf, "%d",
3273 						lcd_refresh_rates[i]);
3274 					f++;
3275 				} else {
3276 					sprintf(strbuf, ",%d",
3277 						lcd_refresh_rates[i]);
3278 				}
3279 				strcat(refresh_rates_buf, strbuf);
3280 			}
3281 			m = m << 1;
3282 		}
3283 		default_refresh_rate = (*(u8 *)(par->lcd_table+61) & 0xf0) >> 4;
3284 		PRINTKI("       supports refresh rates [%s], default %d Hz\n",
3285 			refresh_rates_buf, lcd_refresh_rates[default_refresh_rate]);
3286 		par->lcd_refreshrate = lcd_refresh_rates[default_refresh_rate];
3287 		/*
3288 		 * We now need to determine the crtc parameters for the
3289 		 * LCD monitor. This is tricky, because they are not stored
3290 		 * individually in the BIOS. Instead, the BIOS contains a
3291 		 * table of display modes that work for this monitor.
3292 		 *
3293 		 * The idea is that we search for a mode of the same dimensions
3294 		 * as the dimensions of the LCD monitor. Say our LCD monitor
3295 		 * is 800x600 pixels, we search for a 800x600 monitor.
3296 		 * The CRTC parameters we find here are the ones that we need
3297 		 * to use to simulate other resolutions on the LCD screen.
3298 		 */
3299 		lcdmodeptr = (u16 *)(par->lcd_table + 64);
3300 		while (*lcdmodeptr != 0) {
3301 			u32 modeptr;
3302 			u16 mwidth, mheight, lcd_hsync_start, lcd_vsync_start;
3303 			modeptr = bios_base + *lcdmodeptr;
3304 
3305 			mwidth = *((u16 *)(modeptr+0));
3306 			mheight = *((u16 *)(modeptr+2));
3307 
3308 			if (mwidth == width && mheight == height) {
3309 				par->lcd_pixclock = 100000000 / *((u16 *)(modeptr+9));
3310 				par->lcd_htotal = *((u16 *)(modeptr+17)) & 511;
3311 				par->lcd_hdisp = *((u16 *)(modeptr+19)) & 511;
3312 				lcd_hsync_start = *((u16 *)(modeptr+21)) & 511;
3313 				par->lcd_hsync_dly = (*((u16 *)(modeptr+21)) >> 9) & 7;
3314 				par->lcd_hsync_len = *((u8 *)(modeptr+23)) & 63;
3315 
3316 				par->lcd_vtotal = *((u16 *)(modeptr+24)) & 2047;
3317 				par->lcd_vdisp = *((u16 *)(modeptr+26)) & 2047;
3318 				lcd_vsync_start = *((u16 *)(modeptr+28)) & 2047;
3319 				par->lcd_vsync_len = (*((u16 *)(modeptr+28)) >> 11) & 31;
3320 
3321 				par->lcd_htotal = (par->lcd_htotal + 1) * 8;
3322 				par->lcd_hdisp = (par->lcd_hdisp + 1) * 8;
3323 				lcd_hsync_start = (lcd_hsync_start + 1) * 8;
3324 				par->lcd_hsync_len = par->lcd_hsync_len * 8;
3325 
3326 				par->lcd_vtotal++;
3327 				par->lcd_vdisp++;
3328 				lcd_vsync_start++;
3329 
3330 				par->lcd_right_margin = lcd_hsync_start - par->lcd_hdisp;
3331 				par->lcd_lower_margin = lcd_vsync_start - par->lcd_vdisp;
3332 				par->lcd_hblank_len = par->lcd_htotal - par->lcd_hdisp;
3333 				par->lcd_vblank_len = par->lcd_vtotal - par->lcd_vdisp;
3334 				break;
3335 			}
3336 
3337 			lcdmodeptr++;
3338 		}
3339 		if (*lcdmodeptr == 0) {
3340 			PRINTKE("LCD monitor CRTC parameters not found!!!\n");
3341 			/* To do: Switch to CRT if possible. */
3342 		} else {
3343 			PRINTKI("       LCD CRTC parameters: %d.%d  %d %d %d %d  %d %d %d %d\n",
3344 				1000000 / par->lcd_pixclock, 1000000 % par->lcd_pixclock,
3345 				par->lcd_hdisp,
3346 				par->lcd_hdisp + par->lcd_right_margin,
3347 				par->lcd_hdisp + par->lcd_right_margin
3348 					+ par->lcd_hsync_dly + par->lcd_hsync_len,
3349 				par->lcd_htotal,
3350 				par->lcd_vdisp,
3351 				par->lcd_vdisp + par->lcd_lower_margin,
3352 				par->lcd_vdisp + par->lcd_lower_margin + par->lcd_vsync_len,
3353 				par->lcd_vtotal);
3354 			PRINTKI("                          : %d %d %d %d %d %d %d %d %d\n",
3355 				par->lcd_pixclock,
3356 				par->lcd_hblank_len - (par->lcd_right_margin +
3357 					par->lcd_hsync_dly + par->lcd_hsync_len),
3358 				par->lcd_hdisp,
3359 				par->lcd_right_margin,
3360 				par->lcd_hsync_len,
3361 				par->lcd_vblank_len - (par->lcd_lower_margin + par->lcd_vsync_len),
3362 				par->lcd_vdisp,
3363 				par->lcd_lower_margin,
3364 				par->lcd_vsync_len);
3365 		}
3366 	}
3367 }
3368 #endif /* CONFIG_FB_ATY_GENERIC_LCD */
3369 
3370 static int init_from_bios(struct atyfb_par *par)
3371 {
3372 	u32 bios_base, rom_addr;
3373 	int ret;
3374 
3375 	rom_addr = 0xc0000 + ((aty_ld_le32(SCRATCH_REG1, par) & 0x7f) << 11);
3376 	bios_base = (unsigned long)ioremap(rom_addr, 0x10000);
3377 
3378 	/* The BIOS starts with 0xaa55. */
3379 	if (*((u16 *)bios_base) == 0xaa55) {
3380 
3381 		u8 *bios_ptr;
3382 		u16 rom_table_offset, freq_table_offset;
3383 		PLL_BLOCK_MACH64 pll_block;
3384 
3385 		PRINTKI("Mach64 BIOS is located at %x, mapped at %x.\n", rom_addr, bios_base);
3386 
3387 		/* check for frequncy table */
3388 		bios_ptr = (u8*)bios_base;
3389 		rom_table_offset = (u16)(bios_ptr[0x48] | (bios_ptr[0x49] << 8));
3390 		freq_table_offset = bios_ptr[rom_table_offset + 16] | (bios_ptr[rom_table_offset + 17] << 8);
3391 		memcpy(&pll_block, bios_ptr + freq_table_offset, sizeof(PLL_BLOCK_MACH64));
3392 
3393 		PRINTKI("BIOS frequency table:\n");
3394 		PRINTKI("PCLK_min_freq %d, PCLK_max_freq %d, ref_freq %d, ref_divider %d\n",
3395 			pll_block.PCLK_min_freq, pll_block.PCLK_max_freq,
3396 			pll_block.ref_freq, pll_block.ref_divider);
3397 		PRINTKI("MCLK_pwd %d, MCLK_max_freq %d, XCLK_max_freq %d, SCLK_freq %d\n",
3398 			pll_block.MCLK_pwd, pll_block.MCLK_max_freq,
3399 			pll_block.XCLK_max_freq, pll_block.SCLK_freq);
3400 
3401 		par->pll_limits.pll_min = pll_block.PCLK_min_freq/100;
3402 		par->pll_limits.pll_max = pll_block.PCLK_max_freq/100;
3403 		par->pll_limits.ref_clk = pll_block.ref_freq/100;
3404 		par->pll_limits.ref_div = pll_block.ref_divider;
3405 		par->pll_limits.sclk = pll_block.SCLK_freq/100;
3406 		par->pll_limits.mclk = pll_block.MCLK_max_freq/100;
3407 		par->pll_limits.mclk_pm = pll_block.MCLK_pwd/100;
3408 		par->pll_limits.xclk = pll_block.XCLK_max_freq/100;
3409 #ifdef CONFIG_FB_ATY_GENERIC_LCD
3410 		aty_init_lcd(par, bios_base);
3411 #endif
3412 		ret = 0;
3413 	} else {
3414 		PRINTKE("no BIOS frequency table found, use parameters\n");
3415 		ret = -ENXIO;
3416 	}
3417 	iounmap((void __iomem *)bios_base);
3418 
3419 	return ret;
3420 }
3421 #endif /* __i386__ */
3422 
3423 static int atyfb_setup_generic(struct pci_dev *pdev, struct fb_info *info,
3424 			       unsigned long addr)
3425 {
3426 	struct atyfb_par *par = info->par;
3427 	u16 tmp;
3428 	unsigned long raddr;
3429 	struct resource *rrp;
3430 	int ret = 0;
3431 
3432 	raddr = addr + 0x7ff000UL;
3433 	rrp = &pdev->resource[2];
3434 	if ((rrp->flags & IORESOURCE_MEM) &&
3435 	    request_mem_region(rrp->start, resource_size(rrp), "atyfb")) {
3436 		par->aux_start = rrp->start;
3437 		par->aux_size = resource_size(rrp);
3438 		raddr = rrp->start;
3439 		PRINTKI("using auxiliary register aperture\n");
3440 	}
3441 
3442 	info->fix.mmio_start = raddr;
3443 	/*
3444 	 * By using strong UC we force the MTRR to never have an
3445 	 * effect on the MMIO region on both non-PAT and PAT systems.
3446 	 */
3447 	par->ati_regbase = ioremap_uc(info->fix.mmio_start, 0x1000);
3448 	if (par->ati_regbase == NULL)
3449 		return -ENOMEM;
3450 
3451 	info->fix.mmio_start += par->aux_start ? 0x400 : 0xc00;
3452 	par->ati_regbase += par->aux_start ? 0x400 : 0xc00;
3453 
3454 	/*
3455 	 * Enable memory-space accesses using config-space
3456 	 * command register.
3457 	 */
3458 	pci_read_config_word(pdev, PCI_COMMAND, &tmp);
3459 	if (!(tmp & PCI_COMMAND_MEMORY)) {
3460 		tmp |= PCI_COMMAND_MEMORY;
3461 		pci_write_config_word(pdev, PCI_COMMAND, tmp);
3462 	}
3463 #ifdef __BIG_ENDIAN
3464 	/* Use the big-endian aperture */
3465 	addr += 0x800000;
3466 #endif
3467 
3468 	/* Map in frame buffer */
3469 	info->fix.smem_start = addr;
3470 
3471 	/*
3472 	 * The framebuffer is not always 8 MiB, that's just the size of the
3473 	 * PCI BAR. We temporarily abuse smem_len here to store the size
3474 	 * of the BAR. aty_init() will later correct it to match the actual
3475 	 * framebuffer size.
3476 	 *
3477 	 * On devices that don't have the auxiliary register aperture, the
3478 	 * registers are housed at the top end of the framebuffer PCI BAR.
3479 	 * aty_fudge_framebuffer_len() is used to reduce smem_len to not
3480 	 * overlap with the registers.
3481 	 */
3482 	info->fix.smem_len = 0x800000;
3483 
3484 	aty_fudge_framebuffer_len(info);
3485 
3486 	info->screen_base = ioremap_wc(info->fix.smem_start,
3487 				       info->fix.smem_len);
3488 	if (info->screen_base == NULL) {
3489 		ret = -ENOMEM;
3490 		goto atyfb_setup_generic_fail;
3491 	}
3492 
3493 	ret = correct_chipset(par);
3494 	if (ret)
3495 		goto atyfb_setup_generic_fail;
3496 #ifdef __i386__
3497 	ret = init_from_bios(par);
3498 	if (ret)
3499 		goto atyfb_setup_generic_fail;
3500 #endif
3501 	/* according to ATI, we should use clock 3 for acelerated mode */
3502 	par->clk_wr_offset = 3;
3503 
3504 	return 0;
3505 
3506 atyfb_setup_generic_fail:
3507 	iounmap(par->ati_regbase);
3508 	par->ati_regbase = NULL;
3509 	if (info->screen_base) {
3510 		iounmap(info->screen_base);
3511 		info->screen_base = NULL;
3512 	}
3513 	return ret;
3514 }
3515 
3516 #endif /* !__sparc__ */
3517 
3518 static int atyfb_pci_probe(struct pci_dev *pdev,
3519 			   const struct pci_device_id *ent)
3520 {
3521 	unsigned long addr, res_start, res_size;
3522 	struct fb_info *info;
3523 	struct resource *rp;
3524 	struct atyfb_par *par;
3525 	int rc;
3526 
3527 	rc = aperture_remove_conflicting_pci_devices(pdev, "atyfb");
3528 	if (rc)
3529 		return rc;
3530 
3531 	/* Enable device in PCI config */
3532 	if (pci_enable_device(pdev)) {
3533 		PRINTKE("Cannot enable PCI device\n");
3534 		return -ENXIO;
3535 	}
3536 
3537 	/* Find which resource to use */
3538 	rp = &pdev->resource[0];
3539 	if (rp->flags & IORESOURCE_IO)
3540 		rp = &pdev->resource[1];
3541 	addr = rp->start;
3542 	if (!addr)
3543 		return -ENXIO;
3544 
3545 	/* Reserve space */
3546 	res_start = rp->start;
3547 	res_size = resource_size(rp);
3548 	if (!request_mem_region(res_start, res_size, "atyfb"))
3549 		return -EBUSY;
3550 
3551 	/* Allocate framebuffer */
3552 	info = framebuffer_alloc(sizeof(struct atyfb_par), &pdev->dev);
3553 	if (!info)
3554 		return -ENOMEM;
3555 
3556 	par = info->par;
3557 	par->bus_type = PCI;
3558 	info->fix = atyfb_fix;
3559 	info->device = &pdev->dev;
3560 	par->pci_id = pdev->device;
3561 	par->res_start = res_start;
3562 	par->res_size = res_size;
3563 	par->irq = pdev->irq;
3564 	par->pdev = pdev;
3565 
3566 	/* Setup "info" structure */
3567 #ifdef __sparc__
3568 	rc = atyfb_setup_sparc(pdev, info, addr);
3569 #else
3570 	rc = atyfb_setup_generic(pdev, info, addr);
3571 #endif
3572 	if (rc)
3573 		goto err_release_mem;
3574 
3575 	pci_set_drvdata(pdev, info);
3576 
3577 	/* Init chip & register framebuffer */
3578 	rc = aty_init(info);
3579 	if (rc)
3580 		goto err_release_io;
3581 
3582 #ifdef __sparc__
3583 	/*
3584 	 * Add /dev/fb mmap values.
3585 	 */
3586 	par->mmap_map[0].voff = 0x8000000000000000UL;
3587 	par->mmap_map[0].poff = (unsigned long) info->screen_base & PAGE_MASK;
3588 	par->mmap_map[0].size = info->fix.smem_len;
3589 	par->mmap_map[0].prot_mask = _PAGE_CACHE;
3590 	par->mmap_map[0].prot_flag = _PAGE_E;
3591 	par->mmap_map[1].voff = par->mmap_map[0].voff + info->fix.smem_len;
3592 	par->mmap_map[1].poff = (long)par->ati_regbase & PAGE_MASK;
3593 	par->mmap_map[1].size = PAGE_SIZE;
3594 	par->mmap_map[1].prot_mask = _PAGE_CACHE;
3595 	par->mmap_map[1].prot_flag = _PAGE_E;
3596 #endif /* __sparc__ */
3597 
3598 	mutex_lock(&reboot_lock);
3599 	if (!reboot_info)
3600 		reboot_info = info;
3601 	mutex_unlock(&reboot_lock);
3602 
3603 	return 0;
3604 
3605 err_release_io:
3606 #ifdef __sparc__
3607 	kfree(par->mmap_map);
3608 #else
3609 	if (par->ati_regbase)
3610 		iounmap(par->ati_regbase);
3611 	if (info->screen_base)
3612 		iounmap(info->screen_base);
3613 #endif
3614 err_release_mem:
3615 	if (par->aux_start)
3616 		release_mem_region(par->aux_start, par->aux_size);
3617 
3618 	release_mem_region(par->res_start, par->res_size);
3619 	framebuffer_release(info);
3620 
3621 	return rc;
3622 }
3623 
3624 #endif /* CONFIG_PCI */
3625 
3626 #ifdef CONFIG_ATARI
3627 
3628 static int __init atyfb_atari_probe(void)
3629 {
3630 	struct atyfb_par *par;
3631 	struct fb_info *info;
3632 	int m64_num;
3633 	u32 clock_r;
3634 	int num_found = 0;
3635 
3636 	for (m64_num = 0; m64_num < mach64_count; m64_num++) {
3637 		if (!phys_vmembase[m64_num] || !phys_size[m64_num] ||
3638 		    !phys_guiregbase[m64_num]) {
3639 			PRINTKI("phys_*[%d] parameters not set => "
3640 				"returning early. \n", m64_num);
3641 			continue;
3642 		}
3643 
3644 		info = framebuffer_alloc(sizeof(struct atyfb_par), NULL);
3645 		if (!info)
3646 			return -ENOMEM;
3647 
3648 		par = info->par;
3649 
3650 		info->fix = atyfb_fix;
3651 
3652 		par->irq = (unsigned int) -1; /* something invalid */
3653 
3654 		/*
3655 		 * Map the video memory (physical address given)
3656 		 * to somewhere in the kernel address space.
3657 		 */
3658 		info->screen_base = ioremap_wc(phys_vmembase[m64_num],
3659 					       phys_size[m64_num]);
3660 		info->fix.smem_start = (unsigned long)info->screen_base; /* Fake! */
3661 		par->ati_regbase = ioremap(phys_guiregbase[m64_num], 0x10000) +
3662 						0xFC00ul;
3663 		info->fix.mmio_start = (unsigned long)par->ati_regbase; /* Fake! */
3664 
3665 		aty_st_le32(CLOCK_CNTL, 0x12345678, par);
3666 		clock_r = aty_ld_le32(CLOCK_CNTL, par);
3667 
3668 		switch (clock_r & 0x003F) {
3669 		case 0x12:
3670 			par->clk_wr_offset = 3; /*  */
3671 			break;
3672 		case 0x34:
3673 			par->clk_wr_offset = 2; /* Medusa ST-IO ISA Adapter etc. */
3674 			break;
3675 		case 0x16:
3676 			par->clk_wr_offset = 1; /*  */
3677 			break;
3678 		case 0x38:
3679 			par->clk_wr_offset = 0; /* Panther 1 ISA Adapter (Gerald) */
3680 			break;
3681 		}
3682 
3683 		/* Fake pci_id for correct_chipset() */
3684 		switch (aty_ld_le32(CNFG_CHIP_ID, par) & CFG_CHIP_TYPE) {
3685 		case 0x00d7:
3686 			par->pci_id = PCI_CHIP_MACH64GX;
3687 			break;
3688 		case 0x0057:
3689 			par->pci_id = PCI_CHIP_MACH64CX;
3690 			break;
3691 		default:
3692 			break;
3693 		}
3694 
3695 		if (correct_chipset(par) || aty_init(info)) {
3696 			iounmap(info->screen_base);
3697 			iounmap(par->ati_regbase);
3698 			framebuffer_release(info);
3699 		} else {
3700 			num_found++;
3701 		}
3702 	}
3703 
3704 	return num_found ? 0 : -ENXIO;
3705 }
3706 
3707 #endif /* CONFIG_ATARI */
3708 
3709 #ifdef CONFIG_PCI
3710 
3711 static void atyfb_remove(struct fb_info *info)
3712 {
3713 	struct atyfb_par *par = (struct atyfb_par *) info->par;
3714 
3715 	/* restore video mode */
3716 	aty_set_crtc(par, &par->saved_crtc);
3717 	par->pll_ops->set_pll(info, &par->saved_pll);
3718 
3719 #ifdef CONFIG_FB_ATY_BACKLIGHT
3720 	if (M64_HAS(MOBIL_BUS))
3721 		aty_bl_exit(info->bl_dev);
3722 #endif
3723 
3724 	unregister_framebuffer(info);
3725 
3726 	arch_phys_wc_del(par->wc_cookie);
3727 
3728 #ifndef __sparc__
3729 	if (par->ati_regbase)
3730 		iounmap(par->ati_regbase);
3731 	if (info->screen_base)
3732 		iounmap(info->screen_base);
3733 #ifdef __BIG_ENDIAN
3734 	if (info->sprite.addr)
3735 		iounmap(info->sprite.addr);
3736 #endif
3737 #endif
3738 #ifdef __sparc__
3739 	kfree(par->mmap_map);
3740 #endif
3741 	if (par->aux_start)
3742 		release_mem_region(par->aux_start, par->aux_size);
3743 
3744 	if (par->res_start)
3745 		release_mem_region(par->res_start, par->res_size);
3746 
3747 	framebuffer_release(info);
3748 }
3749 
3750 
3751 static void atyfb_pci_remove(struct pci_dev *pdev)
3752 {
3753 	struct fb_info *info = pci_get_drvdata(pdev);
3754 
3755 	mutex_lock(&reboot_lock);
3756 	if (reboot_info == info)
3757 		reboot_info = NULL;
3758 	mutex_unlock(&reboot_lock);
3759 
3760 	atyfb_remove(info);
3761 }
3762 
3763 static const struct pci_device_id atyfb_pci_tbl[] = {
3764 #ifdef CONFIG_FB_ATY_GX
3765 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64GX) },
3766 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64CX) },
3767 #endif /* CONFIG_FB_ATY_GX */
3768 
3769 #ifdef CONFIG_FB_ATY_CT
3770 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64CT) },
3771 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64ET) },
3772 
3773 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64LT) },
3774 
3775 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64VT) },
3776 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64GT) },
3777 
3778 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64VU) },
3779 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64GU) },
3780 
3781 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64LG) },
3782 
3783 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64VV) },
3784 
3785 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64GV) },
3786 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64GW) },
3787 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64GY) },
3788 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64GZ) },
3789 
3790 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64GB) },
3791 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64GD) },
3792 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64GI) },
3793 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64GP) },
3794 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64GQ) },
3795 
3796 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64LB) },
3797 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64LD) },
3798 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64LI) },
3799 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64LP) },
3800 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64LQ) },
3801 
3802 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64GM) },
3803 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64GN) },
3804 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64GO) },
3805 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64GL) },
3806 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64GR) },
3807 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64GS) },
3808 
3809 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64LM) },
3810 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64LN) },
3811 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64LR) },
3812 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_CHIP_MACH64LS) },
3813 #endif /* CONFIG_FB_ATY_CT */
3814 	{ }
3815 };
3816 
3817 MODULE_DEVICE_TABLE(pci, atyfb_pci_tbl);
3818 
3819 static struct pci_driver atyfb_driver = {
3820 	.name		= "atyfb",
3821 	.id_table	= atyfb_pci_tbl,
3822 	.probe		= atyfb_pci_probe,
3823 	.remove		= atyfb_pci_remove,
3824 	.driver.pm	= &atyfb_pci_pm_ops,
3825 };
3826 
3827 #endif /* CONFIG_PCI */
3828 
3829 #ifndef MODULE
3830 static int __init atyfb_setup(char *options)
3831 {
3832 	char *this_opt;
3833 
3834 	if (!options || !*options)
3835 		return 0;
3836 
3837 	while ((this_opt = strsep(&options, ",")) != NULL) {
3838 		if (!strncmp(this_opt, "noaccel", 7)) {
3839 			noaccel = true;
3840 		} else if (!strncmp(this_opt, "nomtrr", 6)) {
3841 			nomtrr = true;
3842 		} else if (!strncmp(this_opt, "vram:", 5))
3843 			vram = simple_strtoul(this_opt + 5, NULL, 0);
3844 		else if (!strncmp(this_opt, "pll:", 4))
3845 			pll = simple_strtoul(this_opt + 4, NULL, 0);
3846 		else if (!strncmp(this_opt, "mclk:", 5))
3847 			mclk = simple_strtoul(this_opt + 5, NULL, 0);
3848 		else if (!strncmp(this_opt, "xclk:", 5))
3849 			xclk = simple_strtoul(this_opt+5, NULL, 0);
3850 		else if (!strncmp(this_opt, "comp_sync:", 10))
3851 			comp_sync = simple_strtoul(this_opt+10, NULL, 0);
3852 		else if (!strncmp(this_opt, "backlight:", 10))
3853 			backlight = simple_strtoul(this_opt+10, NULL, 0);
3854 #ifdef CONFIG_PPC
3855 		else if (!strncmp(this_opt, "vmode:", 6)) {
3856 			unsigned int vmode =
3857 			    simple_strtoul(this_opt + 6, NULL, 0);
3858 			if (vmode > 0 && vmode <= VMODE_MAX)
3859 				default_vmode = vmode;
3860 		} else if (!strncmp(this_opt, "cmode:", 6)) {
3861 			unsigned int cmode =
3862 			    simple_strtoul(this_opt + 6, NULL, 0);
3863 			switch (cmode) {
3864 			case 0:
3865 			case 8:
3866 				default_cmode = CMODE_8;
3867 				break;
3868 			case 15:
3869 			case 16:
3870 				default_cmode = CMODE_16;
3871 				break;
3872 			case 24:
3873 			case 32:
3874 				default_cmode = CMODE_32;
3875 				break;
3876 			}
3877 		}
3878 #endif
3879 #ifdef CONFIG_ATARI
3880 		/*
3881 		 * Why do we need this silly Mach64 argument?
3882 		 * We are already here because of mach64= so its redundant.
3883 		 */
3884 		else if (MACH_IS_ATARI
3885 			 && (!strncmp(this_opt, "Mach64:", 7))) {
3886 			static unsigned char m64_num;
3887 			static char mach64_str[80];
3888 			strscpy(mach64_str, this_opt + 7, sizeof(mach64_str));
3889 			if (!store_video_par(mach64_str, m64_num)) {
3890 				m64_num++;
3891 				mach64_count = m64_num;
3892 			}
3893 		}
3894 #endif
3895 		else
3896 			mode = this_opt;
3897 	}
3898 	return 0;
3899 }
3900 #endif  /*  MODULE  */
3901 
3902 static int atyfb_reboot_notify(struct notifier_block *nb,
3903 			       unsigned long code, void *unused)
3904 {
3905 	struct atyfb_par *par;
3906 
3907 	if (code != SYS_RESTART)
3908 		return NOTIFY_DONE;
3909 
3910 	mutex_lock(&reboot_lock);
3911 
3912 	if (!reboot_info)
3913 		goto out;
3914 
3915 	lock_fb_info(reboot_info);
3916 
3917 	par = reboot_info->par;
3918 
3919 	/*
3920 	 * HP OmniBook 500's BIOS doesn't like the state of the
3921 	 * hardware after atyfb has been used. Restore the hardware
3922 	 * to the original state to allow successful reboots.
3923 	 */
3924 	aty_set_crtc(par, &par->saved_crtc);
3925 	par->pll_ops->set_pll(reboot_info, &par->saved_pll);
3926 
3927 	unlock_fb_info(reboot_info);
3928  out:
3929 	mutex_unlock(&reboot_lock);
3930 
3931 	return NOTIFY_DONE;
3932 }
3933 
3934 static struct notifier_block atyfb_reboot_notifier = {
3935 	.notifier_call = atyfb_reboot_notify,
3936 };
3937 
3938 static const struct dmi_system_id atyfb_reboot_ids[] __initconst = {
3939 	{
3940 		.ident = "HP OmniBook 500",
3941 		.matches = {
3942 			DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
3943 			DMI_MATCH(DMI_PRODUCT_NAME, "HP OmniBook PC"),
3944 			DMI_MATCH(DMI_PRODUCT_VERSION, "HP OmniBook 500 FA"),
3945 		},
3946 	},
3947 
3948 	{ }
3949 };
3950 static bool registered_notifier = false;
3951 
3952 static int __init atyfb_init(void)
3953 {
3954 	int err1 = 1, err2 = 1;
3955 #ifndef MODULE
3956 	char *option = NULL;
3957 #endif
3958 
3959 	if (fb_modesetting_disabled("atyfb"))
3960 		return -ENODEV;
3961 
3962 #ifndef MODULE
3963 	if (fb_get_options("atyfb", &option))
3964 		return -ENODEV;
3965 	atyfb_setup(option);
3966 #endif
3967 
3968 #ifdef CONFIG_PCI
3969 	err1 = pci_register_driver(&atyfb_driver);
3970 #endif
3971 #ifdef CONFIG_ATARI
3972 	err2 = atyfb_atari_probe();
3973 #endif
3974 
3975 	if (err1 && err2)
3976 		return -ENODEV;
3977 
3978 	if (dmi_check_system(atyfb_reboot_ids)) {
3979 		register_reboot_notifier(&atyfb_reboot_notifier);
3980 		registered_notifier = true;
3981 	}
3982 
3983 	return 0;
3984 }
3985 
3986 static void __exit atyfb_exit(void)
3987 {
3988 	if (registered_notifier)
3989 		unregister_reboot_notifier(&atyfb_reboot_notifier);
3990 
3991 #ifdef CONFIG_PCI
3992 	pci_unregister_driver(&atyfb_driver);
3993 #endif
3994 }
3995 
3996 module_init(atyfb_init);
3997 module_exit(atyfb_exit);
3998 
3999 MODULE_DESCRIPTION("FBDev driver for ATI Mach64 cards");
4000 MODULE_LICENSE("GPL");
4001 module_param(noaccel, bool, 0);
4002 MODULE_PARM_DESC(noaccel, "bool: disable acceleration");
4003 module_param(vram, int, 0);
4004 MODULE_PARM_DESC(vram, "int: override size of video ram");
4005 module_param(pll, int, 0);
4006 MODULE_PARM_DESC(pll, "int: override video clock");
4007 module_param(mclk, int, 0);
4008 MODULE_PARM_DESC(mclk, "int: override memory clock");
4009 module_param(xclk, int, 0);
4010 MODULE_PARM_DESC(xclk, "int: override accelerated engine clock");
4011 module_param(comp_sync, int, 0);
4012 MODULE_PARM_DESC(comp_sync, "Set composite sync signal to low (0) or high (1)");
4013 module_param(mode, charp, 0);
4014 MODULE_PARM_DESC(mode, "Specify resolution as \"<xres>x<yres>[-<bpp>][@<refresh>]\" ");
4015 module_param(nomtrr, bool, 0);
4016 MODULE_PARM_DESC(nomtrr, "bool: disable use of MTRR registers");
4017