Merge git://git.skbuff.net/gitroot/yoshfuji/linux-2.6-git-rfc3542
[linux-2.6] / drivers / video / aty / radeon_base.c
1 /*
2  *      drivers/video/aty/radeon_base.c
3  *
4  *      framebuffer driver for ATI Radeon chipset video boards
5  *
6  *      Copyright 2003  Ben. Herrenschmidt <benh@kernel.crashing.org>
7  *      Copyright 2000  Ani Joshi <ajoshi@kernel.crashing.org>
8  *
9  *      i2c bits from Luca Tettamanti <kronos@kronoz.cjb.net>
10  *      
11  *      Special thanks to ATI DevRel team for their hardware donations.
12  *
13  *      ...Insert GPL boilerplate here...
14  *
15  *      Significant portions of this driver apdated from XFree86 Radeon
16  *      driver which has the following copyright notice:
17  *
18  *      Copyright 2000 ATI Technologies Inc., Markham, Ontario, and
19  *                     VA Linux Systems Inc., Fremont, California.
20  *
21  *      All Rights Reserved.
22  *
23  *      Permission is hereby granted, free of charge, to any person obtaining
24  *      a copy of this software and associated documentation files (the
25  *      "Software"), to deal in the Software without restriction, including
26  *      without limitation on the rights to use, copy, modify, merge,
27  *      publish, distribute, sublicense, and/or sell copies of the Software,
28  *      and to permit persons to whom the Software is furnished to do so,
29  *      subject to the following conditions:
30  *
31  *      The above copyright notice and this permission notice (including the
32  *      next paragraph) shall be included in all copies or substantial
33  *      portions of the Software.
34  *
35  *      THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
36  *      EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
37  *      MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
38  *      NON-INFRINGEMENT.  IN NO EVENT SHALL ATI, VA LINUX SYSTEMS AND/OR
39  *      THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
40  *      WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
41  *      OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
42  *      DEALINGS IN THE SOFTWARE.
43  *
44  *      XFree86 driver authors:
45  *
46  *         Kevin E. Martin <martin@xfree86.org>
47  *         Rickard E. Faith <faith@valinux.com>
48  *         Alan Hourihane <alanh@fairlite.demon.co.uk>
49  *
50  */
51
52
53 #define RADEON_VERSION  "0.2.0"
54
55 #include <linux/config.h>
56 #include <linux/module.h>
57 #include <linux/moduleparam.h>
58 #include <linux/kernel.h>
59 #include <linux/errno.h>
60 #include <linux/string.h>
61 #include <linux/mm.h>
62 #include <linux/tty.h>
63 #include <linux/slab.h>
64 #include <linux/delay.h>
65 #include <linux/time.h>
66 #include <linux/fb.h>
67 #include <linux/ioport.h>
68 #include <linux/init.h>
69 #include <linux/pci.h>
70 #include <linux/vmalloc.h>
71 #include <linux/device.h>
72 #include <linux/i2c.h>
73
74 #include <asm/io.h>
75 #include <asm/uaccess.h>
76
77 #ifdef CONFIG_PPC_OF
78
79 #include <asm/pci-bridge.h>
80 #include "../macmodes.h"
81
82 #ifdef CONFIG_PMAC_BACKLIGHT
83 #include <asm/backlight.h>
84 #endif
85
86 #ifdef CONFIG_BOOTX_TEXT
87 #include <asm/btext.h>
88 #endif
89
90 #endif /* CONFIG_PPC_OF */
91
92 #ifdef CONFIG_MTRR
93 #include <asm/mtrr.h>
94 #endif
95
96 #include <video/radeon.h>
97 #include <linux/radeonfb.h>
98
99 #include "../edid.h" // MOVE THAT TO include/video
100 #include "ati_ids.h"
101 #include "radeonfb.h"               
102
103 #define MAX_MAPPED_VRAM (2048*2048*4)
104 #define MIN_MAPPED_VRAM (1024*768*1)
105
106 #define CHIP_DEF(id, family, flags)                                     \
107         { PCI_VENDOR_ID_ATI, id, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (flags) | (CHIP_FAMILY_##family) }
108
109 static struct pci_device_id radeonfb_pci_table[] = {
110         /* Mobility M6 */
111         CHIP_DEF(PCI_CHIP_RADEON_LY,    RV100,  CHIP_HAS_CRTC2 | CHIP_IS_MOBILITY),
112         CHIP_DEF(PCI_CHIP_RADEON_LZ,    RV100,  CHIP_HAS_CRTC2 | CHIP_IS_MOBILITY),
113         /* Radeon VE/7000 */
114         CHIP_DEF(PCI_CHIP_RV100_QY,     RV100,  CHIP_HAS_CRTC2),
115         CHIP_DEF(PCI_CHIP_RV100_QZ,     RV100,  CHIP_HAS_CRTC2),
116         /* Radeon IGP320M (U1) */
117         CHIP_DEF(PCI_CHIP_RS100_4336,   RS100,  CHIP_HAS_CRTC2 | CHIP_IS_IGP | CHIP_IS_MOBILITY),
118         /* Radeon IGP320 (A3) */
119         CHIP_DEF(PCI_CHIP_RS100_4136,   RS100,  CHIP_HAS_CRTC2 | CHIP_IS_IGP), 
120         /* IGP330M/340M/350M (U2) */
121         CHIP_DEF(PCI_CHIP_RS200_4337,   RS200,  CHIP_HAS_CRTC2 | CHIP_IS_IGP | CHIP_IS_MOBILITY),
122         /* IGP330/340/350 (A4) */
123         CHIP_DEF(PCI_CHIP_RS200_4137,   RS200,  CHIP_HAS_CRTC2 | CHIP_IS_IGP),
124         /* Mobility 7000 IGP */
125         CHIP_DEF(PCI_CHIP_RS250_4437,   RS200,  CHIP_HAS_CRTC2 | CHIP_IS_IGP | CHIP_IS_MOBILITY),
126         /* 7000 IGP (A4+) */
127         CHIP_DEF(PCI_CHIP_RS250_4237,   RS200,  CHIP_HAS_CRTC2 | CHIP_IS_IGP),
128         /* 8500 AIW */
129         CHIP_DEF(PCI_CHIP_R200_BB,      R200,   CHIP_HAS_CRTC2),
130         CHIP_DEF(PCI_CHIP_R200_BC,      R200,   CHIP_HAS_CRTC2),
131         /* 8700/8800 */
132         CHIP_DEF(PCI_CHIP_R200_QH,      R200,   CHIP_HAS_CRTC2),
133         /* 8500 */
134         CHIP_DEF(PCI_CHIP_R200_QL,      R200,   CHIP_HAS_CRTC2),
135         /* 9100 */
136         CHIP_DEF(PCI_CHIP_R200_QM,      R200,   CHIP_HAS_CRTC2),
137         /* Mobility M7 */
138         CHIP_DEF(PCI_CHIP_RADEON_LW,    RV200,  CHIP_HAS_CRTC2 | CHIP_IS_MOBILITY),
139         CHIP_DEF(PCI_CHIP_RADEON_LX,    RV200,  CHIP_HAS_CRTC2 | CHIP_IS_MOBILITY),
140         /* 7500 */
141         CHIP_DEF(PCI_CHIP_RV200_QW,     RV200,  CHIP_HAS_CRTC2),
142         CHIP_DEF(PCI_CHIP_RV200_QX,     RV200,  CHIP_HAS_CRTC2),
143         /* Mobility M9 */
144         CHIP_DEF(PCI_CHIP_RV250_Ld,     RV250,  CHIP_HAS_CRTC2 | CHIP_IS_MOBILITY),
145         CHIP_DEF(PCI_CHIP_RV250_Le,     RV250,  CHIP_HAS_CRTC2 | CHIP_IS_MOBILITY),
146         CHIP_DEF(PCI_CHIP_RV250_Lf,     RV250,  CHIP_HAS_CRTC2 | CHIP_IS_MOBILITY),
147         CHIP_DEF(PCI_CHIP_RV250_Lg,     RV250,  CHIP_HAS_CRTC2 | CHIP_IS_MOBILITY),
148         /* 9000/Pro */
149         CHIP_DEF(PCI_CHIP_RV250_If,     RV250,  CHIP_HAS_CRTC2),
150         CHIP_DEF(PCI_CHIP_RV250_Ig,     RV250,  CHIP_HAS_CRTC2),
151         /* Mobility 9100 IGP (U3) */
152         CHIP_DEF(PCI_CHIP_RS300_5835,   RS300,  CHIP_HAS_CRTC2 | CHIP_IS_IGP | CHIP_IS_MOBILITY),
153         CHIP_DEF(PCI_CHIP_RS350_7835,   RS300,  CHIP_HAS_CRTC2 | CHIP_IS_IGP | CHIP_IS_MOBILITY),
154         /* 9100 IGP (A5) */
155         CHIP_DEF(PCI_CHIP_RS300_5834,   RS300,  CHIP_HAS_CRTC2 | CHIP_IS_IGP),
156         CHIP_DEF(PCI_CHIP_RS350_7834,   RS300,  CHIP_HAS_CRTC2 | CHIP_IS_IGP),
157         /* Mobility 9200 (M9+) */
158         CHIP_DEF(PCI_CHIP_RV280_5C61,   RV280,  CHIP_HAS_CRTC2 | CHIP_IS_MOBILITY),
159         CHIP_DEF(PCI_CHIP_RV280_5C63,   RV280,  CHIP_HAS_CRTC2 | CHIP_IS_MOBILITY),
160         /* 9200 */
161         CHIP_DEF(PCI_CHIP_RV280_5960,   RV280,  CHIP_HAS_CRTC2),
162         CHIP_DEF(PCI_CHIP_RV280_5961,   RV280,  CHIP_HAS_CRTC2),
163         CHIP_DEF(PCI_CHIP_RV280_5962,   RV280,  CHIP_HAS_CRTC2),
164         CHIP_DEF(PCI_CHIP_RV280_5964,   RV280,  CHIP_HAS_CRTC2),
165         /* 9500 */
166         CHIP_DEF(PCI_CHIP_R300_AD,      R300,   CHIP_HAS_CRTC2),
167         CHIP_DEF(PCI_CHIP_R300_AE,      R300,   CHIP_HAS_CRTC2),
168         /* 9600TX / FireGL Z1 */
169         CHIP_DEF(PCI_CHIP_R300_AF,      R300,   CHIP_HAS_CRTC2),
170         CHIP_DEF(PCI_CHIP_R300_AG,      R300,   CHIP_HAS_CRTC2),
171         /* 9700/9500/Pro/FireGL X1 */
172         CHIP_DEF(PCI_CHIP_R300_ND,      R300,   CHIP_HAS_CRTC2),
173         CHIP_DEF(PCI_CHIP_R300_NE,      R300,   CHIP_HAS_CRTC2),
174         CHIP_DEF(PCI_CHIP_R300_NF,      R300,   CHIP_HAS_CRTC2),
175         CHIP_DEF(PCI_CHIP_R300_NG,      R300,   CHIP_HAS_CRTC2),
176         /* Mobility M10/M11 */
177         CHIP_DEF(PCI_CHIP_RV350_NP,     RV350,  CHIP_HAS_CRTC2 | CHIP_IS_MOBILITY),
178         CHIP_DEF(PCI_CHIP_RV350_NQ,     RV350,  CHIP_HAS_CRTC2 | CHIP_IS_MOBILITY),
179         CHIP_DEF(PCI_CHIP_RV350_NR,     RV350,  CHIP_HAS_CRTC2 | CHIP_IS_MOBILITY),
180         CHIP_DEF(PCI_CHIP_RV350_NS,     RV350,  CHIP_HAS_CRTC2 | CHIP_IS_MOBILITY),
181         CHIP_DEF(PCI_CHIP_RV350_NT,     RV350,  CHIP_HAS_CRTC2 | CHIP_IS_MOBILITY),
182         CHIP_DEF(PCI_CHIP_RV350_NV,     RV350,  CHIP_HAS_CRTC2 | CHIP_IS_MOBILITY),
183         /* 9600/FireGL T2 */
184         CHIP_DEF(PCI_CHIP_RV350_AP,     RV350,  CHIP_HAS_CRTC2),
185         CHIP_DEF(PCI_CHIP_RV350_AQ,     RV350,  CHIP_HAS_CRTC2),
186         CHIP_DEF(PCI_CHIP_RV360_AR,     RV350,  CHIP_HAS_CRTC2),
187         CHIP_DEF(PCI_CHIP_RV350_AS,     RV350,  CHIP_HAS_CRTC2),
188         CHIP_DEF(PCI_CHIP_RV350_AT,     RV350,  CHIP_HAS_CRTC2),
189         CHIP_DEF(PCI_CHIP_RV350_AV,     RV350,  CHIP_HAS_CRTC2),
190         /* 9800/Pro/FileGL X2 */
191         CHIP_DEF(PCI_CHIP_R350_AH,      R350,   CHIP_HAS_CRTC2),
192         CHIP_DEF(PCI_CHIP_R350_AI,      R350,   CHIP_HAS_CRTC2),
193         CHIP_DEF(PCI_CHIP_R350_AJ,      R350,   CHIP_HAS_CRTC2),
194         CHIP_DEF(PCI_CHIP_R350_AK,      R350,   CHIP_HAS_CRTC2),
195         CHIP_DEF(PCI_CHIP_R350_NH,      R350,   CHIP_HAS_CRTC2),
196         CHIP_DEF(PCI_CHIP_R350_NI,      R350,   CHIP_HAS_CRTC2),
197         CHIP_DEF(PCI_CHIP_R360_NJ,      R350,   CHIP_HAS_CRTC2),
198         CHIP_DEF(PCI_CHIP_R350_NK,      R350,   CHIP_HAS_CRTC2),
199         /* Newer stuff */
200         CHIP_DEF(PCI_CHIP_RV380_3E50,   RV380,  CHIP_HAS_CRTC2),
201         CHIP_DEF(PCI_CHIP_RV380_3E54,   RV380,  CHIP_HAS_CRTC2),
202         CHIP_DEF(PCI_CHIP_RV380_3150,   RV380,  CHIP_HAS_CRTC2 | CHIP_IS_MOBILITY),
203         CHIP_DEF(PCI_CHIP_RV380_3154,   RV380,  CHIP_HAS_CRTC2 | CHIP_IS_MOBILITY),
204         CHIP_DEF(PCI_CHIP_RV370_5B60,   RV380,  CHIP_HAS_CRTC2),
205         CHIP_DEF(PCI_CHIP_RV370_5B62,   RV380,  CHIP_HAS_CRTC2),
206         CHIP_DEF(PCI_CHIP_RV370_5B64,   RV380,  CHIP_HAS_CRTC2),
207         CHIP_DEF(PCI_CHIP_RV370_5B65,   RV380,  CHIP_HAS_CRTC2),
208         CHIP_DEF(PCI_CHIP_RV370_5460,   RV380,  CHIP_HAS_CRTC2 | CHIP_IS_MOBILITY),
209         CHIP_DEF(PCI_CHIP_RV370_5464,   RV380,  CHIP_HAS_CRTC2 | CHIP_IS_MOBILITY),
210         CHIP_DEF(PCI_CHIP_R420_JH,      R420,   CHIP_HAS_CRTC2),
211         CHIP_DEF(PCI_CHIP_R420_JI,      R420,   CHIP_HAS_CRTC2),
212         CHIP_DEF(PCI_CHIP_R420_JJ,      R420,   CHIP_HAS_CRTC2),
213         CHIP_DEF(PCI_CHIP_R420_JK,      R420,   CHIP_HAS_CRTC2),
214         CHIP_DEF(PCI_CHIP_R420_JL,      R420,   CHIP_HAS_CRTC2),
215         CHIP_DEF(PCI_CHIP_R420_JM,      R420,   CHIP_HAS_CRTC2),
216         CHIP_DEF(PCI_CHIP_R420_JN,      R420,   CHIP_HAS_CRTC2 | CHIP_IS_MOBILITY),
217         CHIP_DEF(PCI_CHIP_R420_JP,      R420,   CHIP_HAS_CRTC2),
218         CHIP_DEF(PCI_CHIP_R423_UH,      R420,   CHIP_HAS_CRTC2),
219         CHIP_DEF(PCI_CHIP_R423_UI,      R420,   CHIP_HAS_CRTC2),
220         CHIP_DEF(PCI_CHIP_R423_UJ,      R420,   CHIP_HAS_CRTC2),
221         CHIP_DEF(PCI_CHIP_R423_UK,      R420,   CHIP_HAS_CRTC2),
222         CHIP_DEF(PCI_CHIP_R423_UQ,      R420,   CHIP_HAS_CRTC2),
223         CHIP_DEF(PCI_CHIP_R423_UR,      R420,   CHIP_HAS_CRTC2),
224         CHIP_DEF(PCI_CHIP_R423_UT,      R420,   CHIP_HAS_CRTC2),
225         CHIP_DEF(PCI_CHIP_R423_5D57,    R420,   CHIP_HAS_CRTC2),
226         /* Original Radeon/7200 */
227         CHIP_DEF(PCI_CHIP_RADEON_QD,    RADEON, 0),
228         CHIP_DEF(PCI_CHIP_RADEON_QE,    RADEON, 0),
229         CHIP_DEF(PCI_CHIP_RADEON_QF,    RADEON, 0),
230         CHIP_DEF(PCI_CHIP_RADEON_QG,    RADEON, 0),
231         { 0, }
232 };
233 MODULE_DEVICE_TABLE(pci, radeonfb_pci_table);
234
235
236 typedef struct {
237         u16 reg;
238         u32 val;
239 } reg_val;
240
241
242 /* these common regs are cleared before mode setting so they do not
243  * interfere with anything
244  */
245 static reg_val common_regs[] = {
246         { OVR_CLR, 0 }, 
247         { OVR_WID_LEFT_RIGHT, 0 },
248         { OVR_WID_TOP_BOTTOM, 0 },
249         { OV0_SCALE_CNTL, 0 },
250         { SUBPIC_CNTL, 0 },
251         { VIPH_CONTROL, 0 },
252         { I2C_CNTL_1, 0 },
253         { GEN_INT_CNTL, 0 },
254         { CAP0_TRIG_CNTL, 0 },
255         { CAP1_TRIG_CNTL, 0 },
256 };
257
258 /*
259  * globals
260  */
261         
262 static char *mode_option;
263 static char *monitor_layout;
264 static int noaccel = 0;
265 static int default_dynclk = -2;
266 static int nomodeset = 0;
267 static int ignore_edid = 0;
268 static int mirror = 0;
269 static int panel_yres = 0;
270 static int force_dfp = 0;
271 static int force_measure_pll = 0;
272 #ifdef CONFIG_MTRR
273 static int nomtrr = 0;
274 #endif
275
276 /*
277  * prototypes
278  */
279
280
281 #ifdef CONFIG_PPC_OF
282
283 #ifdef CONFIG_PMAC_BACKLIGHT
284 static int radeon_set_backlight_enable(int on, int level, void *data);
285 static int radeon_set_backlight_level(int level, void *data);
286 static struct backlight_controller radeon_backlight_controller = {
287         radeon_set_backlight_enable,
288         radeon_set_backlight_level
289 };
290 #endif /* CONFIG_PMAC_BACKLIGHT */
291
292 #endif /* CONFIG_PPC_OF */
293
294 static void radeon_unmap_ROM(struct radeonfb_info *rinfo, struct pci_dev *dev)
295 {
296         if (!rinfo->bios_seg)
297                 return;
298         pci_unmap_rom(dev, rinfo->bios_seg);
299 }
300
301 static int __devinit radeon_map_ROM(struct radeonfb_info *rinfo, struct pci_dev *dev)
302 {
303         void __iomem *rom;
304         u16 dptr;
305         u8 rom_type;
306         size_t rom_size;
307
308         /* If this is a primary card, there is a shadow copy of the
309          * ROM somewhere in the first meg. We will just ignore the copy
310          * and use the ROM directly.
311          */
312     
313         /* Fix from ATI for problem with Radeon hardware not leaving ROM enabled */
314         unsigned int temp;
315         temp = INREG(MPP_TB_CONFIG);
316         temp &= 0x00ffffffu;
317         temp |= 0x04 << 24;
318         OUTREG(MPP_TB_CONFIG, temp);
319         temp = INREG(MPP_TB_CONFIG);
320                                                                                                           
321         rom = pci_map_rom(dev, &rom_size);
322         if (!rom) {
323                 printk(KERN_ERR "radeonfb (%s): ROM failed to map\n",
324                        pci_name(rinfo->pdev));
325                 return -ENOMEM;
326         }
327         
328         rinfo->bios_seg = rom;
329
330         /* Very simple test to make sure it appeared */
331         if (BIOS_IN16(0) != 0xaa55) {
332                 printk(KERN_DEBUG "radeonfb (%s): Invalid ROM signature %x "
333                         "should be 0xaa55\n",
334                         pci_name(rinfo->pdev), BIOS_IN16(0));
335                 goto failed;
336         }
337         /* Look for the PCI data to check the ROM type */
338         dptr = BIOS_IN16(0x18);
339
340         /* Check the PCI data signature. If it's wrong, we still assume a normal x86 ROM
341          * for now, until I've verified this works everywhere. The goal here is more
342          * to phase out Open Firmware images.
343          *
344          * Currently, we only look at the first PCI data, we could iteratre and deal with
345          * them all, and we should use fb_bios_start relative to start of image and not
346          * relative start of ROM, but so far, I never found a dual-image ATI card
347          *
348          * typedef struct {
349          *      u32     signature;      + 0x00
350          *      u16     vendor;         + 0x04
351          *      u16     device;         + 0x06
352          *      u16     reserved_1;     + 0x08
353          *      u16     dlen;           + 0x0a
354          *      u8      drevision;      + 0x0c
355          *      u8      class_hi;       + 0x0d
356          *      u16     class_lo;       + 0x0e
357          *      u16     ilen;           + 0x10
358          *      u16     irevision;      + 0x12
359          *      u8      type;           + 0x14
360          *      u8      indicator;      + 0x15
361          *      u16     reserved_2;     + 0x16
362          * } pci_data_t;
363          */
364         if (BIOS_IN32(dptr) !=  (('R' << 24) | ('I' << 16) | ('C' << 8) | 'P')) {
365                 printk(KERN_WARNING "radeonfb (%s): PCI DATA signature in ROM"
366                        "incorrect: %08x\n", pci_name(rinfo->pdev), BIOS_IN32(dptr));
367                 goto anyway;
368         }
369         rom_type = BIOS_IN8(dptr + 0x14);
370         switch(rom_type) {
371         case 0:
372                 printk(KERN_INFO "radeonfb: Found Intel x86 BIOS ROM Image\n");
373                 break;
374         case 1:
375                 printk(KERN_INFO "radeonfb: Found Open Firmware ROM Image\n");
376                 goto failed;
377         case 2:
378                 printk(KERN_INFO "radeonfb: Found HP PA-RISC ROM Image\n");
379                 goto failed;
380         default:
381                 printk(KERN_INFO "radeonfb: Found unknown type %d ROM Image\n", rom_type);
382                 goto failed;
383         }
384  anyway:
385         /* Locate the flat panel infos, do some sanity checking !!! */
386         rinfo->fp_bios_start = BIOS_IN16(0x48);
387         return 0;
388
389  failed:
390         rinfo->bios_seg = NULL;
391         radeon_unmap_ROM(rinfo, dev);
392         return -ENXIO;
393 }
394
395 #ifdef CONFIG_X86
396 static int  __devinit radeon_find_mem_vbios(struct radeonfb_info *rinfo)
397 {
398         /* I simplified this code as we used to miss the signatures in
399          * a lot of case. It's now closer to XFree, we just don't check
400          * for signatures at all... Something better will have to be done
401          * if we end up having conflicts
402          */
403         u32  segstart;
404         void __iomem *rom_base = NULL;
405                                                 
406         for(segstart=0x000c0000; segstart<0x000f0000; segstart+=0x00001000) {
407                 rom_base = ioremap(segstart, 0x10000);
408                 if (rom_base == NULL)
409                         return -ENOMEM;
410                 if (readb(rom_base) == 0x55 && readb(rom_base + 1) == 0xaa)
411                         break;
412                 iounmap(rom_base);
413                 rom_base = NULL;
414         }
415         if (rom_base == NULL)
416                 return -ENXIO;
417
418         /* Locate the flat panel infos, do some sanity checking !!! */
419         rinfo->bios_seg = rom_base;
420         rinfo->fp_bios_start = BIOS_IN16(0x48);
421
422         return 0;
423 }
424 #endif
425
426 #ifdef CONFIG_PPC_OF
427 /*
428  * Read XTAL (ref clock), SCLK and MCLK from Open Firmware device
429  * tree. Hopefully, ATI OF driver is kind enough to fill these
430  */
431 static int __devinit radeon_read_xtal_OF (struct radeonfb_info *rinfo)
432 {
433         struct device_node *dp = rinfo->of_node;
434         u32 *val;
435
436         if (dp == NULL)
437                 return -ENODEV;
438         val = (u32 *) get_property(dp, "ATY,RefCLK", NULL);
439         if (!val || !*val) {
440                 printk(KERN_WARNING "radeonfb: No ATY,RefCLK property !\n");
441                 return -EINVAL;
442         }
443
444         rinfo->pll.ref_clk = (*val) / 10;
445
446         val = (u32 *) get_property(dp, "ATY,SCLK", NULL);
447         if (val && *val)
448                 rinfo->pll.sclk = (*val) / 10;
449
450         val = (u32 *) get_property(dp, "ATY,MCLK", NULL);
451         if (val && *val)
452                 rinfo->pll.mclk = (*val) / 10;
453
454         return 0;
455 }
456 #endif /* CONFIG_PPC_OF */
457
458 /*
459  * Read PLL infos from chip registers
460  */
461 static int __devinit radeon_probe_pll_params(struct radeonfb_info *rinfo)
462 {
463         unsigned char ppll_div_sel;
464         unsigned Ns, Nm, M;
465         unsigned sclk, mclk, tmp, ref_div;
466         int hTotal, vTotal, num, denom, m, n;
467         unsigned long long hz, vclk;
468         long xtal;
469         struct timeval start_tv, stop_tv;
470         long total_secs, total_usecs;
471         int i;
472
473         /* Ugh, we cut interrupts, bad bad bad, but we want some precision
474          * here, so... --BenH
475          */
476
477         /* Flush PCI buffers ? */
478         tmp = INREG(DEVICE_ID);
479
480         local_irq_disable();
481
482         for(i=0; i<1000000; i++)
483                 if (((INREG(CRTC_VLINE_CRNT_VLINE) >> 16) & 0x3ff) == 0)
484                         break;
485
486         do_gettimeofday(&start_tv);
487
488         for(i=0; i<1000000; i++)
489                 if (((INREG(CRTC_VLINE_CRNT_VLINE) >> 16) & 0x3ff) != 0)
490                         break;
491
492         for(i=0; i<1000000; i++)
493                 if (((INREG(CRTC_VLINE_CRNT_VLINE) >> 16) & 0x3ff) == 0)
494                         break;
495         
496         do_gettimeofday(&stop_tv);
497         
498         local_irq_enable();
499
500         total_secs = stop_tv.tv_sec - start_tv.tv_sec;
501         if (total_secs > 10)
502                 return -1;
503         total_usecs = stop_tv.tv_usec - start_tv.tv_usec;
504         total_usecs += total_secs * 1000000;
505         if (total_usecs < 0)
506                 total_usecs = -total_usecs;
507         hz = 1000000/total_usecs;
508  
509         hTotal = ((INREG(CRTC_H_TOTAL_DISP) & 0x1ff) + 1) * 8;
510         vTotal = ((INREG(CRTC_V_TOTAL_DISP) & 0x3ff) + 1);
511         vclk = (long long)hTotal * (long long)vTotal * hz;
512
513         switch((INPLL(PPLL_REF_DIV) & 0x30000) >> 16) {
514         case 0:
515         default:
516                 num = 1;
517                 denom = 1;
518                 break;
519         case 1:
520                 n = ((INPLL(M_SPLL_REF_FB_DIV) >> 16) & 0xff);
521                 m = (INPLL(M_SPLL_REF_FB_DIV) & 0xff);
522                 num = 2*n;
523                 denom = 2*m;
524                 break;
525         case 2:
526                 n = ((INPLL(M_SPLL_REF_FB_DIV) >> 8) & 0xff);
527                 m = (INPLL(M_SPLL_REF_FB_DIV) & 0xff);
528                 num = 2*n;
529                 denom = 2*m;
530         break;
531         }
532
533         ppll_div_sel = INREG8(CLOCK_CNTL_INDEX + 1) & 0x3;
534         radeon_pll_errata_after_index(rinfo);
535
536         n = (INPLL(PPLL_DIV_0 + ppll_div_sel) & 0x7ff);
537         m = (INPLL(PPLL_REF_DIV) & 0x3ff);
538
539         num *= n;
540         denom *= m;
541
542         switch ((INPLL(PPLL_DIV_0 + ppll_div_sel) >> 16) & 0x7) {
543         case 1:
544                 denom *= 2;
545                 break;
546         case 2:
547                 denom *= 4;
548                 break;
549         case 3:
550                 denom *= 8;
551                 break;
552         case 4:
553                 denom *= 3;
554                 break;
555         case 6:
556                 denom *= 6;   
557                 break;
558         case 7:
559                 denom *= 12;
560                 break;
561         }
562
563         vclk *= denom;
564         do_div(vclk, 1000 * num);
565         xtal = vclk;
566
567         if ((xtal > 26900) && (xtal < 27100))
568                 xtal = 2700;
569         else if ((xtal > 14200) && (xtal < 14400))
570                 xtal = 1432;
571         else if ((xtal > 29400) && (xtal < 29600))
572                 xtal = 2950;
573         else {
574                 printk(KERN_WARNING "xtal calculation failed: %ld\n", xtal);
575                 return -1;
576         }
577
578         tmp = INPLL(M_SPLL_REF_FB_DIV);
579         ref_div = INPLL(PPLL_REF_DIV) & 0x3ff;
580
581         Ns = (tmp & 0xff0000) >> 16;
582         Nm = (tmp & 0xff00) >> 8;
583         M = (tmp & 0xff);
584         sclk = round_div((2 * Ns * xtal), (2 * M));
585         mclk = round_div((2 * Nm * xtal), (2 * M));
586
587         /* we're done, hopefully these are sane values */
588         rinfo->pll.ref_clk = xtal;
589         rinfo->pll.ref_div = ref_div;
590         rinfo->pll.sclk = sclk;
591         rinfo->pll.mclk = mclk;
592
593         return 0;
594 }
595
596 /*
597  * Retreive PLL infos by different means (BIOS, Open Firmware, register probing...)
598  */
599 static void __devinit radeon_get_pllinfo(struct radeonfb_info *rinfo)
600 {
601         /*
602          * In the case nothing works, these are defaults; they are mostly
603          * incomplete, however.  It does provide ppll_max and _min values
604          * even for most other methods, however.
605          */
606         switch (rinfo->chipset) {
607         case PCI_DEVICE_ID_ATI_RADEON_QW:
608         case PCI_DEVICE_ID_ATI_RADEON_QX:
609                 rinfo->pll.ppll_max = 35000;
610                 rinfo->pll.ppll_min = 12000;
611                 rinfo->pll.mclk = 23000;
612                 rinfo->pll.sclk = 23000;
613                 rinfo->pll.ref_clk = 2700;
614                 break;
615         case PCI_DEVICE_ID_ATI_RADEON_QL:
616         case PCI_DEVICE_ID_ATI_RADEON_QN:
617         case PCI_DEVICE_ID_ATI_RADEON_QO:
618         case PCI_DEVICE_ID_ATI_RADEON_Ql:
619         case PCI_DEVICE_ID_ATI_RADEON_BB:
620                 rinfo->pll.ppll_max = 35000;
621                 rinfo->pll.ppll_min = 12000;
622                 rinfo->pll.mclk = 27500;
623                 rinfo->pll.sclk = 27500;
624                 rinfo->pll.ref_clk = 2700;
625                 break;
626         case PCI_DEVICE_ID_ATI_RADEON_Id:
627         case PCI_DEVICE_ID_ATI_RADEON_Ie:
628         case PCI_DEVICE_ID_ATI_RADEON_If:
629         case PCI_DEVICE_ID_ATI_RADEON_Ig:
630                 rinfo->pll.ppll_max = 35000;
631                 rinfo->pll.ppll_min = 12000;
632                 rinfo->pll.mclk = 25000;
633                 rinfo->pll.sclk = 25000;
634                 rinfo->pll.ref_clk = 2700;
635                 break;
636         case PCI_DEVICE_ID_ATI_RADEON_ND:
637         case PCI_DEVICE_ID_ATI_RADEON_NE:
638         case PCI_DEVICE_ID_ATI_RADEON_NF:
639         case PCI_DEVICE_ID_ATI_RADEON_NG:
640                 rinfo->pll.ppll_max = 40000;
641                 rinfo->pll.ppll_min = 20000;
642                 rinfo->pll.mclk = 27000;
643                 rinfo->pll.sclk = 27000;
644                 rinfo->pll.ref_clk = 2700;
645                 break;
646         case PCI_DEVICE_ID_ATI_RADEON_QD:
647         case PCI_DEVICE_ID_ATI_RADEON_QE:
648         case PCI_DEVICE_ID_ATI_RADEON_QF:
649         case PCI_DEVICE_ID_ATI_RADEON_QG:
650         default:
651                 rinfo->pll.ppll_max = 35000;
652                 rinfo->pll.ppll_min = 12000;
653                 rinfo->pll.mclk = 16600;
654                 rinfo->pll.sclk = 16600;
655                 rinfo->pll.ref_clk = 2700;
656                 break;
657         }
658         rinfo->pll.ref_div = INPLL(PPLL_REF_DIV) & PPLL_REF_DIV_MASK;
659
660
661 #ifdef CONFIG_PPC_OF
662         /*
663          * Retreive PLL infos from Open Firmware first
664          */
665         if (!force_measure_pll && radeon_read_xtal_OF(rinfo) == 0) {
666                 printk(KERN_INFO "radeonfb: Retreived PLL infos from Open Firmware\n");
667                 goto found;
668         }
669 #endif /* CONFIG_PPC_OF */
670
671         /*
672          * Check out if we have an X86 which gave us some PLL informations
673          * and if yes, retreive them
674          */
675         if (!force_measure_pll && rinfo->bios_seg) {
676                 u16 pll_info_block = BIOS_IN16(rinfo->fp_bios_start + 0x30);
677
678                 rinfo->pll.sclk         = BIOS_IN16(pll_info_block + 0x08);
679                 rinfo->pll.mclk         = BIOS_IN16(pll_info_block + 0x0a);
680                 rinfo->pll.ref_clk      = BIOS_IN16(pll_info_block + 0x0e);
681                 rinfo->pll.ref_div      = BIOS_IN16(pll_info_block + 0x10);
682                 rinfo->pll.ppll_min     = BIOS_IN32(pll_info_block + 0x12);
683                 rinfo->pll.ppll_max     = BIOS_IN32(pll_info_block + 0x16);
684
685                 printk(KERN_INFO "radeonfb: Retreived PLL infos from BIOS\n");
686                 goto found;
687         }
688
689         /*
690          * We didn't get PLL parameters from either OF or BIOS, we try to
691          * probe them
692          */
693         if (radeon_probe_pll_params(rinfo) == 0) {
694                 printk(KERN_INFO "radeonfb: Retreived PLL infos from registers\n");
695                 goto found;
696         }
697
698         /*
699          * Fall back to already-set defaults...
700          */
701         printk(KERN_INFO "radeonfb: Used default PLL infos\n");
702
703 found:
704         /*
705          * Some methods fail to retreive SCLK and MCLK values, we apply default
706          * settings in this case (200Mhz). If that really happne often, we could
707          * fetch from registers instead...
708          */
709         if (rinfo->pll.mclk == 0)
710                 rinfo->pll.mclk = 20000;
711         if (rinfo->pll.sclk == 0)
712                 rinfo->pll.sclk = 20000;
713
714         printk("radeonfb: Reference=%d.%02d MHz (RefDiv=%d) Memory=%d.%02d Mhz, System=%d.%02d MHz\n",
715                rinfo->pll.ref_clk / 100, rinfo->pll.ref_clk % 100,
716                rinfo->pll.ref_div,
717                rinfo->pll.mclk / 100, rinfo->pll.mclk % 100,
718                rinfo->pll.sclk / 100, rinfo->pll.sclk % 100);
719         printk("radeonfb: PLL min %d max %d\n", rinfo->pll.ppll_min, rinfo->pll.ppll_max);
720 }
721
722 static int radeonfb_check_var (struct fb_var_screeninfo *var, struct fb_info *info)
723 {
724         struct radeonfb_info *rinfo = info->par;
725         struct fb_var_screeninfo v;
726         int nom, den;
727         unsigned int pitch;
728
729         if (radeon_match_mode(rinfo, &v, var))
730                 return -EINVAL;
731
732         switch (v.bits_per_pixel) {
733                 case 0 ... 8:
734                         v.bits_per_pixel = 8;
735                         break;
736                 case 9 ... 16:
737                         v.bits_per_pixel = 16;
738                         break;
739                 case 17 ... 24:
740 #if 0 /* Doesn't seem to work */
741                         v.bits_per_pixel = 24;
742                         break;
743 #endif                  
744                         return -EINVAL;
745                 case 25 ... 32:
746                         v.bits_per_pixel = 32;
747                         break;
748                 default:
749                         return -EINVAL;
750         }
751
752         switch (var_to_depth(&v)) {
753                 case 8:
754                         nom = den = 1;
755                         v.red.offset = v.green.offset = v.blue.offset = 0;
756                         v.red.length = v.green.length = v.blue.length = 8;
757                         v.transp.offset = v.transp.length = 0;
758                         break;
759                 case 15:
760                         nom = 2;
761                         den = 1;
762                         v.red.offset = 10;
763                         v.green.offset = 5;
764                         v.blue.offset = 0;
765                         v.red.length = v.green.length = v.blue.length = 5;
766                         v.transp.offset = v.transp.length = 0;
767                         break;
768                 case 16:
769                         nom = 2;
770                         den = 1;
771                         v.red.offset = 11;
772                         v.green.offset = 5;
773                         v.blue.offset = 0;
774                         v.red.length = 5;
775                         v.green.length = 6;
776                         v.blue.length = 5;
777                         v.transp.offset = v.transp.length = 0;
778                         break;                          
779                 case 24:
780                         nom = 4;
781                         den = 1;
782                         v.red.offset = 16;
783                         v.green.offset = 8;
784                         v.blue.offset = 0;
785                         v.red.length = v.blue.length = v.green.length = 8;
786                         v.transp.offset = v.transp.length = 0;
787                         break;
788                 case 32:
789                         nom = 4;
790                         den = 1;
791                         v.red.offset = 16;
792                         v.green.offset = 8;
793                         v.blue.offset = 0;
794                         v.red.length = v.blue.length = v.green.length = 8;
795                         v.transp.offset = 24;
796                         v.transp.length = 8;
797                         break;
798                 default:
799                         printk ("radeonfb: mode %dx%dx%d rejected, color depth invalid\n",
800                                 var->xres, var->yres, var->bits_per_pixel);
801                         return -EINVAL;
802         }
803
804         if (v.yres_virtual < v.yres)
805                 v.yres_virtual = v.yres;
806         if (v.xres_virtual < v.xres)
807                 v.xres_virtual = v.xres;
808                 
809
810         /* XXX I'm adjusting xres_virtual to the pitch, that may help XFree
811          * with some panels, though I don't quite like this solution
812          */
813         if (rinfo->info->flags & FBINFO_HWACCEL_DISABLED) {
814                 v.xres_virtual = v.xres_virtual & ~7ul;
815         } else {
816                 pitch = ((v.xres_virtual * ((v.bits_per_pixel + 1) / 8) + 0x3f)
817                                 & ~(0x3f)) >> 6;
818                 v.xres_virtual = (pitch << 6) / ((v.bits_per_pixel + 1) / 8);
819         }
820
821         if (((v.xres_virtual * v.yres_virtual * nom) / den) > rinfo->mapped_vram)
822                 return -EINVAL;
823
824         if (v.xres_virtual < v.xres)
825                 v.xres = v.xres_virtual;
826
827         if (v.xoffset < 0)
828                 v.xoffset = 0;
829         if (v.yoffset < 0)
830                 v.yoffset = 0;
831          
832         if (v.xoffset > v.xres_virtual - v.xres)
833                 v.xoffset = v.xres_virtual - v.xres - 1;
834                         
835         if (v.yoffset > v.yres_virtual - v.yres)
836                 v.yoffset = v.yres_virtual - v.yres - 1;
837          
838         v.red.msb_right = v.green.msb_right = v.blue.msb_right =
839                           v.transp.offset = v.transp.length =
840                           v.transp.msb_right = 0;
841         
842         memcpy(var, &v, sizeof(v));
843
844         return 0;
845 }
846
847
848 static int radeonfb_pan_display (struct fb_var_screeninfo *var,
849                                  struct fb_info *info)
850 {
851         struct radeonfb_info *rinfo = info->par;
852
853         if ((var->xoffset + var->xres > var->xres_virtual)
854             || (var->yoffset + var->yres > var->yres_virtual))
855                return -EINVAL;
856                 
857         if (rinfo->asleep)
858                 return 0;
859
860         radeon_fifo_wait(2);
861         OUTREG(CRTC_OFFSET, ((var->yoffset * var->xres_virtual + var->xoffset)
862                              * var->bits_per_pixel / 8) & ~7);
863         return 0;
864 }
865
866
867 static int radeonfb_ioctl (struct inode *inode, struct file *file, unsigned int cmd,
868                            unsigned long arg, struct fb_info *info)
869 {
870         struct radeonfb_info *rinfo = info->par;
871         unsigned int tmp;
872         u32 value = 0;
873         int rc;
874
875         switch (cmd) {
876                 /*
877                  * TODO:  set mirror accordingly for non-Mobility chipsets with 2 CRTC's
878                  *        and do something better using 2nd CRTC instead of just hackish
879                  *        routing to second output
880                  */
881                 case FBIO_RADEON_SET_MIRROR:
882                         if (!rinfo->is_mobility)
883                                 return -EINVAL;
884
885                         rc = get_user(value, (__u32 __user *)arg);
886
887                         if (rc)
888                                 return rc;
889
890                         radeon_fifo_wait(2);
891                         if (value & 0x01) {
892                                 tmp = INREG(LVDS_GEN_CNTL);
893
894                                 tmp |= (LVDS_ON | LVDS_BLON);
895                         } else {
896                                 tmp = INREG(LVDS_GEN_CNTL);
897
898                                 tmp &= ~(LVDS_ON | LVDS_BLON);
899                         }
900
901                         OUTREG(LVDS_GEN_CNTL, tmp);
902
903                         if (value & 0x02) {
904                                 tmp = INREG(CRTC_EXT_CNTL);
905                                 tmp |= CRTC_CRT_ON;
906
907                                 mirror = 1;
908                         } else {
909                                 tmp = INREG(CRTC_EXT_CNTL);
910                                 tmp &= ~CRTC_CRT_ON;
911
912                                 mirror = 0;
913                         }
914
915                         OUTREG(CRTC_EXT_CNTL, tmp);
916
917                         return 0;
918                 case FBIO_RADEON_GET_MIRROR:
919                         if (!rinfo->is_mobility)
920                                 return -EINVAL;
921
922                         tmp = INREG(LVDS_GEN_CNTL);
923                         if ((LVDS_ON | LVDS_BLON) & tmp)
924                                 value |= 0x01;
925
926                         tmp = INREG(CRTC_EXT_CNTL);
927                         if (CRTC_CRT_ON & tmp)
928                                 value |= 0x02;
929
930                         return put_user(value, (__u32 __user *)arg);
931                 default:
932                         return -EINVAL;
933         }
934
935         return -EINVAL;
936 }
937
938
939 int radeon_screen_blank(struct radeonfb_info *rinfo, int blank, int mode_switch)
940 {
941         u32 val;
942         u32 tmp_pix_clks;
943         int unblank = 0;
944
945         if (rinfo->lock_blank)
946                 return 0;
947
948         radeon_engine_idle();
949
950         val = INREG(CRTC_EXT_CNTL);
951         val &= ~(CRTC_DISPLAY_DIS | CRTC_HSYNC_DIS |
952                  CRTC_VSYNC_DIS);
953         switch (blank) {
954         case FB_BLANK_VSYNC_SUSPEND:
955                 val |= (CRTC_DISPLAY_DIS | CRTC_VSYNC_DIS);
956                 break;
957         case FB_BLANK_HSYNC_SUSPEND:
958                 val |= (CRTC_DISPLAY_DIS | CRTC_HSYNC_DIS);
959                 break;
960         case FB_BLANK_POWERDOWN:
961                 val |= (CRTC_DISPLAY_DIS | CRTC_VSYNC_DIS |
962                         CRTC_HSYNC_DIS);
963                 break;
964         case FB_BLANK_NORMAL:
965                 val |= CRTC_DISPLAY_DIS;
966                 break;
967         case FB_BLANK_UNBLANK:
968         default:
969                 unblank = 1;
970         }
971         OUTREG(CRTC_EXT_CNTL, val);
972
973
974         switch (rinfo->mon1_type) {
975         case MT_DFP:
976                 if (unblank)
977                         OUTREGP(FP_GEN_CNTL, (FP_FPON | FP_TMDS_EN),
978                                 ~(FP_FPON | FP_TMDS_EN));
979                 else {
980                         if (mode_switch || blank == FB_BLANK_NORMAL)
981                                 break;
982                         OUTREGP(FP_GEN_CNTL, 0, ~(FP_FPON | FP_TMDS_EN));
983                 }
984                 break;
985         case MT_LCD:
986                 del_timer_sync(&rinfo->lvds_timer);
987                 val = INREG(LVDS_GEN_CNTL);
988                 if (unblank) {
989                         u32 target_val = (val & ~LVDS_DISPLAY_DIS) | LVDS_BLON | LVDS_ON
990                                 | LVDS_EN | (rinfo->init_state.lvds_gen_cntl
991                                              & (LVDS_DIGON | LVDS_BL_MOD_EN));
992                         if ((val ^ target_val) == LVDS_DISPLAY_DIS)
993                                 OUTREG(LVDS_GEN_CNTL, target_val);
994                         else if ((val ^ target_val) != 0) {
995                                 OUTREG(LVDS_GEN_CNTL, target_val
996                                        & ~(LVDS_ON | LVDS_BL_MOD_EN));
997                                 rinfo->init_state.lvds_gen_cntl &= ~LVDS_STATE_MASK;
998                                 rinfo->init_state.lvds_gen_cntl |=
999                                         target_val & LVDS_STATE_MASK;
1000                                 if (mode_switch) {
1001                                         radeon_msleep(rinfo->panel_info.pwr_delay);
1002                                         OUTREG(LVDS_GEN_CNTL, target_val);
1003                                 }
1004                                 else {
1005                                         rinfo->pending_lvds_gen_cntl = target_val;
1006                                         mod_timer(&rinfo->lvds_timer,
1007                                            jiffies +
1008                                            msecs_to_jiffies(rinfo->panel_info.pwr_delay));
1009                                 }
1010                         }
1011                 } else {
1012                         val |= LVDS_DISPLAY_DIS;
1013                         OUTREG(LVDS_GEN_CNTL, val);
1014
1015                         /* We don't do a full switch-off on a simple mode switch */
1016                         if (mode_switch || blank == FB_BLANK_NORMAL)
1017                                 break;
1018
1019                         /* Asic bug, when turning off LVDS_ON, we have to make sure
1020                          * RADEON_PIXCLK_LVDS_ALWAYS_ON bit is off
1021                          */
1022                         tmp_pix_clks = INPLL(PIXCLKS_CNTL);
1023                         if (rinfo->is_mobility || rinfo->is_IGP)
1024                                 OUTPLLP(PIXCLKS_CNTL, 0, ~PIXCLK_LVDS_ALWAYS_ONb);
1025                         val &= ~(LVDS_BL_MOD_EN);
1026                         OUTREG(LVDS_GEN_CNTL, val);
1027                         udelay(100);
1028                         val &= ~(LVDS_ON | LVDS_EN);
1029                         OUTREG(LVDS_GEN_CNTL, val);
1030                         val &= ~LVDS_DIGON;
1031                         rinfo->pending_lvds_gen_cntl = val;
1032                         mod_timer(&rinfo->lvds_timer,
1033                                   jiffies +
1034                                   msecs_to_jiffies(rinfo->panel_info.pwr_delay));
1035                         rinfo->init_state.lvds_gen_cntl &= ~LVDS_STATE_MASK;
1036                         rinfo->init_state.lvds_gen_cntl |= val & LVDS_STATE_MASK;
1037                         if (rinfo->is_mobility || rinfo->is_IGP)
1038                                 OUTPLL(PIXCLKS_CNTL, tmp_pix_clks);
1039                 }
1040                 break;
1041         case MT_CRT:
1042                 // todo: powerdown DAC
1043         default:
1044                 break;
1045         }
1046
1047         /* let fbcon do a soft blank for us */
1048         return (blank == FB_BLANK_NORMAL) ? -EINVAL : 0;
1049 }
1050
1051 static int radeonfb_blank (int blank, struct fb_info *info)
1052 {
1053         struct radeonfb_info *rinfo = info->par;
1054
1055         if (rinfo->asleep)
1056                 return 0;
1057                 
1058         return radeon_screen_blank(rinfo, blank, 0);
1059 }
1060
1061 static int radeon_setcolreg (unsigned regno, unsigned red, unsigned green,
1062                              unsigned blue, unsigned transp,
1063                              struct radeonfb_info *rinfo)
1064 {
1065         u32 pindex;
1066         unsigned int i;
1067
1068
1069         if (regno > 255)
1070                 return 1;
1071
1072         red >>= 8;
1073         green >>= 8;
1074         blue >>= 8;
1075         rinfo->palette[regno].red = red;
1076         rinfo->palette[regno].green = green;
1077         rinfo->palette[regno].blue = blue;
1078
1079         /* default */
1080         pindex = regno;
1081
1082         if (!rinfo->asleep) {
1083                 radeon_fifo_wait(9);
1084
1085                 if (rinfo->bpp == 16) {
1086                         pindex = regno * 8;
1087
1088                         if (rinfo->depth == 16 && regno > 63)
1089                                 return 1;
1090                         if (rinfo->depth == 15 && regno > 31)
1091                                 return 1;
1092
1093                         /* For 565, the green component is mixed one order
1094                          * below
1095                          */
1096                         if (rinfo->depth == 16) {
1097                                 OUTREG(PALETTE_INDEX, pindex>>1);
1098                                 OUTREG(PALETTE_DATA,
1099                                        (rinfo->palette[regno>>1].red << 16) |
1100                                         (green << 8) |
1101                                        (rinfo->palette[regno>>1].blue));
1102                                 green = rinfo->palette[regno<<1].green;
1103                         }
1104                 }
1105
1106                 if (rinfo->depth != 16 || regno < 32) {
1107                         OUTREG(PALETTE_INDEX, pindex);
1108                         OUTREG(PALETTE_DATA, (red << 16) |
1109                                (green << 8) | blue);
1110                 }
1111         }
1112         if (regno < 16) {
1113                 u32 *pal = rinfo->info->pseudo_palette;
1114                 switch (rinfo->depth) {
1115                 case 15:
1116                         pal[regno] = (regno << 10) | (regno << 5) | regno;
1117                         break;
1118                 case 16:
1119                         pal[regno] = (regno << 11) | (regno << 5) | regno;
1120                         break;
1121                 case 24:
1122                         pal[regno] = (regno << 16) | (regno << 8) | regno;
1123                         break;
1124                 case 32:
1125                         i = (regno << 8) | regno;
1126                         pal[regno] = (i << 16) | i;
1127                         break;
1128                 }
1129         }
1130         return 0;
1131 }
1132
1133 static int radeonfb_setcolreg (unsigned regno, unsigned red, unsigned green,
1134                                unsigned blue, unsigned transp,
1135                                struct fb_info *info)
1136 {
1137         struct radeonfb_info *rinfo = info->par;
1138         u32 dac_cntl2, vclk_cntl = 0;
1139         int rc;
1140
1141         if (!rinfo->asleep) {
1142                 if (rinfo->is_mobility) {
1143                         vclk_cntl = INPLL(VCLK_ECP_CNTL);
1144                         OUTPLL(VCLK_ECP_CNTL,
1145                                vclk_cntl & ~PIXCLK_DAC_ALWAYS_ONb);
1146                 }
1147
1148                 /* Make sure we are on first palette */
1149                 if (rinfo->has_CRTC2) {
1150                         dac_cntl2 = INREG(DAC_CNTL2);
1151                         dac_cntl2 &= ~DAC2_PALETTE_ACCESS_CNTL;
1152                         OUTREG(DAC_CNTL2, dac_cntl2);
1153                 }
1154         }
1155
1156         rc = radeon_setcolreg (regno, red, green, blue, transp, rinfo);
1157
1158         if (!rinfo->asleep && rinfo->is_mobility)
1159                 OUTPLL(VCLK_ECP_CNTL, vclk_cntl);
1160
1161         return rc;
1162 }
1163
1164 static int radeonfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
1165 {
1166         struct radeonfb_info *rinfo = info->par;
1167         u16 *red, *green, *blue, *transp;
1168         u32 dac_cntl2, vclk_cntl = 0;
1169         int i, start, rc = 0;
1170
1171         if (!rinfo->asleep) {
1172                 if (rinfo->is_mobility) {
1173                         vclk_cntl = INPLL(VCLK_ECP_CNTL);
1174                         OUTPLL(VCLK_ECP_CNTL,
1175                                vclk_cntl & ~PIXCLK_DAC_ALWAYS_ONb);
1176                 }
1177
1178                 /* Make sure we are on first palette */
1179                 if (rinfo->has_CRTC2) {
1180                         dac_cntl2 = INREG(DAC_CNTL2);
1181                         dac_cntl2 &= ~DAC2_PALETTE_ACCESS_CNTL;
1182                         OUTREG(DAC_CNTL2, dac_cntl2);
1183                 }
1184         }
1185
1186         red = cmap->red;
1187         green = cmap->green;
1188         blue = cmap->blue;
1189         transp = cmap->transp;
1190         start = cmap->start;
1191
1192         for (i = 0; i < cmap->len; i++) {
1193                 u_int hred, hgreen, hblue, htransp = 0xffff;
1194
1195                 hred = *red++;
1196                 hgreen = *green++;
1197                 hblue = *blue++;
1198                 if (transp)
1199                         htransp = *transp++;
1200                 rc = radeon_setcolreg (start++, hred, hgreen, hblue, htransp,
1201                                        rinfo);
1202                 if (rc)
1203                         break;
1204         }
1205
1206         if (!rinfo->asleep && rinfo->is_mobility)
1207                 OUTPLL(VCLK_ECP_CNTL, vclk_cntl);
1208
1209         return rc;
1210 }
1211
1212 static void radeon_save_state (struct radeonfb_info *rinfo,
1213                                struct radeon_regs *save)
1214 {
1215         /* CRTC regs */
1216         save->crtc_gen_cntl = INREG(CRTC_GEN_CNTL);
1217         save->crtc_ext_cntl = INREG(CRTC_EXT_CNTL);
1218         save->crtc_more_cntl = INREG(CRTC_MORE_CNTL);
1219         save->dac_cntl = INREG(DAC_CNTL);
1220         save->crtc_h_total_disp = INREG(CRTC_H_TOTAL_DISP);
1221         save->crtc_h_sync_strt_wid = INREG(CRTC_H_SYNC_STRT_WID);
1222         save->crtc_v_total_disp = INREG(CRTC_V_TOTAL_DISP);
1223         save->crtc_v_sync_strt_wid = INREG(CRTC_V_SYNC_STRT_WID);
1224         save->crtc_pitch = INREG(CRTC_PITCH);
1225         save->surface_cntl = INREG(SURFACE_CNTL);
1226
1227         /* FP regs */
1228         save->fp_crtc_h_total_disp = INREG(FP_CRTC_H_TOTAL_DISP);
1229         save->fp_crtc_v_total_disp = INREG(FP_CRTC_V_TOTAL_DISP);
1230         save->fp_gen_cntl = INREG(FP_GEN_CNTL);
1231         save->fp_h_sync_strt_wid = INREG(FP_H_SYNC_STRT_WID);
1232         save->fp_horz_stretch = INREG(FP_HORZ_STRETCH);
1233         save->fp_v_sync_strt_wid = INREG(FP_V_SYNC_STRT_WID);
1234         save->fp_vert_stretch = INREG(FP_VERT_STRETCH);
1235         save->lvds_gen_cntl = INREG(LVDS_GEN_CNTL);
1236         save->lvds_pll_cntl = INREG(LVDS_PLL_CNTL);
1237         save->tmds_crc = INREG(TMDS_CRC);
1238         save->tmds_transmitter_cntl = INREG(TMDS_TRANSMITTER_CNTL);
1239         save->vclk_ecp_cntl = INPLL(VCLK_ECP_CNTL);
1240
1241         /* PLL regs */
1242         save->clk_cntl_index = INREG(CLOCK_CNTL_INDEX) & ~0x3f;
1243         radeon_pll_errata_after_index(rinfo);
1244         save->ppll_div_3 = INPLL(PPLL_DIV_3);
1245         save->ppll_ref_div = INPLL(PPLL_REF_DIV);
1246 }
1247
1248
1249 static void radeon_write_pll_regs(struct radeonfb_info *rinfo, struct radeon_regs *mode)
1250 {
1251         int i;
1252
1253         radeon_fifo_wait(20);
1254
1255         /* Workaround from XFree */
1256         if (rinfo->is_mobility) {
1257                 /* A temporal workaround for the occational blanking on certain laptop
1258                  * panels. This appears to related to the PLL divider registers
1259                  * (fail to lock?). It occurs even when all dividers are the same
1260                  * with their old settings. In this case we really don't need to
1261                  * fiddle with PLL registers. By doing this we can avoid the blanking
1262                  * problem with some panels.
1263                  */
1264                 if ((mode->ppll_ref_div == (INPLL(PPLL_REF_DIV) & PPLL_REF_DIV_MASK)) &&
1265                     (mode->ppll_div_3 == (INPLL(PPLL_DIV_3) &
1266                                           (PPLL_POST3_DIV_MASK | PPLL_FB3_DIV_MASK)))) {
1267                         /* We still have to force a switch to selected PPLL div thanks to
1268                          * an XFree86 driver bug which will switch it away in some cases
1269                          * even when using UseFDev */
1270                         OUTREGP(CLOCK_CNTL_INDEX,
1271                                 mode->clk_cntl_index & PPLL_DIV_SEL_MASK,
1272                                 ~PPLL_DIV_SEL_MASK);
1273                         radeon_pll_errata_after_index(rinfo);
1274                         radeon_pll_errata_after_data(rinfo);
1275                         return;
1276                 }
1277         }
1278
1279         /* Swich VCKL clock input to CPUCLK so it stays fed while PPLL updates*/
1280         OUTPLLP(VCLK_ECP_CNTL, VCLK_SRC_SEL_CPUCLK, ~VCLK_SRC_SEL_MASK);
1281
1282         /* Reset PPLL & enable atomic update */
1283         OUTPLLP(PPLL_CNTL,
1284                 PPLL_RESET | PPLL_ATOMIC_UPDATE_EN | PPLL_VGA_ATOMIC_UPDATE_EN,
1285                 ~(PPLL_RESET | PPLL_ATOMIC_UPDATE_EN | PPLL_VGA_ATOMIC_UPDATE_EN));
1286
1287         /* Switch to selected PPLL divider */
1288         OUTREGP(CLOCK_CNTL_INDEX,
1289                 mode->clk_cntl_index & PPLL_DIV_SEL_MASK,
1290                 ~PPLL_DIV_SEL_MASK);
1291         radeon_pll_errata_after_index(rinfo);
1292         radeon_pll_errata_after_data(rinfo);
1293
1294         /* Set PPLL ref. div */
1295         if (rinfo->family == CHIP_FAMILY_R300 ||
1296             rinfo->family == CHIP_FAMILY_RS300 ||
1297             rinfo->family == CHIP_FAMILY_R350 ||
1298             rinfo->family == CHIP_FAMILY_RV350) {
1299                 if (mode->ppll_ref_div & R300_PPLL_REF_DIV_ACC_MASK) {
1300                         /* When restoring console mode, use saved PPLL_REF_DIV
1301                          * setting.
1302                          */
1303                         OUTPLLP(PPLL_REF_DIV, mode->ppll_ref_div, 0);
1304                 } else {
1305                         /* R300 uses ref_div_acc field as real ref divider */
1306                         OUTPLLP(PPLL_REF_DIV,
1307                                 (mode->ppll_ref_div << R300_PPLL_REF_DIV_ACC_SHIFT), 
1308                                 ~R300_PPLL_REF_DIV_ACC_MASK);
1309                 }
1310         } else
1311                 OUTPLLP(PPLL_REF_DIV, mode->ppll_ref_div, ~PPLL_REF_DIV_MASK);
1312
1313         /* Set PPLL divider 3 & post divider*/
1314         OUTPLLP(PPLL_DIV_3, mode->ppll_div_3, ~PPLL_FB3_DIV_MASK);
1315         OUTPLLP(PPLL_DIV_3, mode->ppll_div_3, ~PPLL_POST3_DIV_MASK);
1316
1317         /* Write update */
1318         while (INPLL(PPLL_REF_DIV) & PPLL_ATOMIC_UPDATE_R)
1319                 ;
1320         OUTPLLP(PPLL_REF_DIV, PPLL_ATOMIC_UPDATE_W, ~PPLL_ATOMIC_UPDATE_W);
1321
1322         /* Wait read update complete */
1323         /* FIXME: Certain revisions of R300 can't recover here.  Not sure of
1324            the cause yet, but this workaround will mask the problem for now.
1325            Other chips usually will pass at the very first test, so the
1326            workaround shouldn't have any effect on them. */
1327         for (i = 0; (i < 10000 && INPLL(PPLL_REF_DIV) & PPLL_ATOMIC_UPDATE_R); i++)
1328                 ;
1329         
1330         OUTPLL(HTOTAL_CNTL, 0);
1331
1332         /* Clear reset & atomic update */
1333         OUTPLLP(PPLL_CNTL, 0,
1334                 ~(PPLL_RESET | PPLL_SLEEP | PPLL_ATOMIC_UPDATE_EN | PPLL_VGA_ATOMIC_UPDATE_EN));
1335
1336         /* We may want some locking ... oh well */
1337         radeon_msleep(5);
1338
1339         /* Switch back VCLK source to PPLL */
1340         OUTPLLP(VCLK_ECP_CNTL, VCLK_SRC_SEL_PPLLCLK, ~VCLK_SRC_SEL_MASK);
1341 }
1342
1343 /*
1344  * Timer function for delayed LVDS panel power up/down
1345  */
1346 static void radeon_lvds_timer_func(unsigned long data)
1347 {
1348         struct radeonfb_info *rinfo = (struct radeonfb_info *)data;
1349
1350         radeon_engine_idle();
1351
1352         OUTREG(LVDS_GEN_CNTL, rinfo->pending_lvds_gen_cntl);
1353 }
1354
1355 /*
1356  * Apply a video mode. This will apply the whole register set, including
1357  * the PLL registers, to the card
1358  */
1359 void radeon_write_mode (struct radeonfb_info *rinfo, struct radeon_regs *mode,
1360                         int regs_only)
1361 {
1362         int i;
1363         int primary_mon = PRIMARY_MONITOR(rinfo);
1364
1365         if (nomodeset)
1366                 return;
1367
1368         if (!regs_only)
1369                 radeon_screen_blank(rinfo, FB_BLANK_NORMAL, 0);
1370
1371         radeon_fifo_wait(31);
1372         for (i=0; i<10; i++)
1373                 OUTREG(common_regs[i].reg, common_regs[i].val);
1374
1375         /* Apply surface registers */
1376         for (i=0; i<8; i++) {
1377                 OUTREG(SURFACE0_LOWER_BOUND + 0x10*i, mode->surf_lower_bound[i]);
1378                 OUTREG(SURFACE0_UPPER_BOUND + 0x10*i, mode->surf_upper_bound[i]);
1379                 OUTREG(SURFACE0_INFO + 0x10*i, mode->surf_info[i]);
1380         }
1381
1382         OUTREG(CRTC_GEN_CNTL, mode->crtc_gen_cntl);
1383         OUTREGP(CRTC_EXT_CNTL, mode->crtc_ext_cntl,
1384                 ~(CRTC_HSYNC_DIS | CRTC_VSYNC_DIS | CRTC_DISPLAY_DIS));
1385         OUTREG(CRTC_MORE_CNTL, mode->crtc_more_cntl);
1386         OUTREGP(DAC_CNTL, mode->dac_cntl, DAC_RANGE_CNTL | DAC_BLANKING);
1387         OUTREG(CRTC_H_TOTAL_DISP, mode->crtc_h_total_disp);
1388         OUTREG(CRTC_H_SYNC_STRT_WID, mode->crtc_h_sync_strt_wid);
1389         OUTREG(CRTC_V_TOTAL_DISP, mode->crtc_v_total_disp);
1390         OUTREG(CRTC_V_SYNC_STRT_WID, mode->crtc_v_sync_strt_wid);
1391         OUTREG(CRTC_OFFSET, 0);
1392         OUTREG(CRTC_OFFSET_CNTL, 0);
1393         OUTREG(CRTC_PITCH, mode->crtc_pitch);
1394         OUTREG(SURFACE_CNTL, mode->surface_cntl);
1395
1396         radeon_write_pll_regs(rinfo, mode);
1397
1398         if ((primary_mon == MT_DFP) || (primary_mon == MT_LCD)) {
1399                 radeon_fifo_wait(10);
1400                 OUTREG(FP_CRTC_H_TOTAL_DISP, mode->fp_crtc_h_total_disp);
1401                 OUTREG(FP_CRTC_V_TOTAL_DISP, mode->fp_crtc_v_total_disp);
1402                 OUTREG(FP_H_SYNC_STRT_WID, mode->fp_h_sync_strt_wid);
1403                 OUTREG(FP_V_SYNC_STRT_WID, mode->fp_v_sync_strt_wid);
1404                 OUTREG(FP_HORZ_STRETCH, mode->fp_horz_stretch);
1405                 OUTREG(FP_VERT_STRETCH, mode->fp_vert_stretch);
1406                 OUTREG(FP_GEN_CNTL, mode->fp_gen_cntl);
1407                 OUTREG(TMDS_CRC, mode->tmds_crc);
1408                 OUTREG(TMDS_TRANSMITTER_CNTL, mode->tmds_transmitter_cntl);
1409         }
1410
1411         if (!regs_only)
1412                 radeon_screen_blank(rinfo, FB_BLANK_UNBLANK, 0);
1413
1414         radeon_fifo_wait(2);
1415         OUTPLL(VCLK_ECP_CNTL, mode->vclk_ecp_cntl);
1416         
1417         return;
1418 }
1419
1420 /*
1421  * Calculate the PLL values for a given mode
1422  */
1423 static void radeon_calc_pll_regs(struct radeonfb_info *rinfo, struct radeon_regs *regs,
1424                                  unsigned long freq)
1425 {
1426         const struct {
1427                 int divider;
1428                 int bitvalue;
1429         } *post_div,
1430           post_divs[] = {
1431                 { 1,  0 },
1432                 { 2,  1 },
1433                 { 4,  2 },
1434                 { 8,  3 },
1435                 { 3,  4 },
1436                 { 16, 5 },
1437                 { 6,  6 },
1438                 { 12, 7 },
1439                 { 0,  0 },
1440         };
1441         int fb_div, pll_output_freq = 0;
1442         int uses_dvo = 0;
1443
1444         /* Check if the DVO port is enabled and sourced from the primary CRTC. I'm
1445          * not sure which model starts having FP2_GEN_CNTL, I assume anything more
1446          * recent than an r(v)100...
1447          */
1448 #if 1
1449         /* XXX I had reports of flicker happening with the cinema display
1450          * on TMDS1 that seem to be fixed if I also forbit odd dividers in
1451          * this case. This could just be a bandwidth calculation issue, I
1452          * haven't implemented the bandwidth code yet, but in the meantime,
1453          * forcing uses_dvo to 1 fixes it and shouln't have bad side effects,
1454          * I haven't seen a case were were absolutely needed an odd PLL
1455          * divider. I'll find a better fix once I have more infos on the
1456          * real cause of the problem.
1457          */
1458         while (rinfo->has_CRTC2) {
1459                 u32 fp2_gen_cntl = INREG(FP2_GEN_CNTL);
1460                 u32 disp_output_cntl;
1461                 int source;
1462
1463                 /* FP2 path not enabled */
1464                 if ((fp2_gen_cntl & FP2_ON) == 0)
1465                         break;
1466                 /* Not all chip revs have the same format for this register,
1467                  * extract the source selection
1468                  */
1469                 if (rinfo->family == CHIP_FAMILY_R200 ||
1470                     rinfo->family == CHIP_FAMILY_R300 ||
1471                     rinfo->family == CHIP_FAMILY_R350 ||
1472                     rinfo->family == CHIP_FAMILY_RV350) {
1473                         source = (fp2_gen_cntl >> 10) & 0x3;
1474                         /* sourced from transform unit, check for transform unit
1475                          * own source
1476                          */
1477                         if (source == 3) {
1478                                 disp_output_cntl = INREG(DISP_OUTPUT_CNTL);
1479                                 source = (disp_output_cntl >> 12) & 0x3;
1480                         }
1481                 } else
1482                         source = (fp2_gen_cntl >> 13) & 0x1;
1483                 /* sourced from CRTC2 -> exit */
1484                 if (source == 1)
1485                         break;
1486
1487                 /* so we end up on CRTC1, let's set uses_dvo to 1 now */
1488                 uses_dvo = 1;
1489                 break;
1490         }
1491 #else
1492         uses_dvo = 1;
1493 #endif
1494         if (freq > rinfo->pll.ppll_max)
1495                 freq = rinfo->pll.ppll_max;
1496         if (freq*12 < rinfo->pll.ppll_min)
1497                 freq = rinfo->pll.ppll_min / 12;
1498         RTRACE("freq = %lu, PLL min = %u, PLL max = %u\n",
1499                freq, rinfo->pll.ppll_min, rinfo->pll.ppll_max);
1500
1501         for (post_div = &post_divs[0]; post_div->divider; ++post_div) {
1502                 pll_output_freq = post_div->divider * freq;
1503                 /* If we output to the DVO port (external TMDS), we don't allow an
1504                  * odd PLL divider as those aren't supported on this path
1505                  */
1506                 if (uses_dvo && (post_div->divider & 1))
1507                         continue;
1508                 if (pll_output_freq >= rinfo->pll.ppll_min  &&
1509                     pll_output_freq <= rinfo->pll.ppll_max)
1510                         break;
1511         }
1512
1513         /* If we fall through the bottom, try the "default value"
1514            given by the terminal post_div->bitvalue */
1515         if ( !post_div->divider ) {
1516                 post_div = &post_divs[post_div->bitvalue];
1517                 pll_output_freq = post_div->divider * freq;
1518         }
1519         RTRACE("ref_div = %d, ref_clk = %d, output_freq = %d\n",
1520                rinfo->pll.ref_div, rinfo->pll.ref_clk,
1521                pll_output_freq);
1522
1523         /* If we fall through the bottom, try the "default value"
1524            given by the terminal post_div->bitvalue */
1525         if ( !post_div->divider ) {
1526                 post_div = &post_divs[post_div->bitvalue];
1527                 pll_output_freq = post_div->divider * freq;
1528         }
1529         RTRACE("ref_div = %d, ref_clk = %d, output_freq = %d\n",
1530                rinfo->pll.ref_div, rinfo->pll.ref_clk,
1531                pll_output_freq);
1532
1533         fb_div = round_div(rinfo->pll.ref_div*pll_output_freq,
1534                                   rinfo->pll.ref_clk);
1535         regs->ppll_ref_div = rinfo->pll.ref_div;
1536         regs->ppll_div_3 = fb_div | (post_div->bitvalue << 16);
1537
1538         RTRACE("post div = 0x%x\n", post_div->bitvalue);
1539         RTRACE("fb_div = 0x%x\n", fb_div);
1540         RTRACE("ppll_div_3 = 0x%x\n", regs->ppll_div_3);
1541 }
1542
1543 static int radeonfb_set_par(struct fb_info *info)
1544 {
1545         struct radeonfb_info *rinfo = info->par;
1546         struct fb_var_screeninfo *mode = &info->var;
1547         struct radeon_regs *newmode;
1548         int hTotal, vTotal, hSyncStart, hSyncEnd,
1549             hSyncPol, vSyncStart, vSyncEnd, vSyncPol, cSync;
1550         u8 hsync_adj_tab[] = {0, 0x12, 9, 9, 6, 5};
1551         u8 hsync_fudge_fp[] = {2, 2, 0, 0, 5, 5};
1552         u32 sync, h_sync_pol, v_sync_pol, dotClock, pixClock;
1553         int i, freq;
1554         int format = 0;
1555         int nopllcalc = 0;
1556         int hsync_start, hsync_fudge, bytpp, hsync_wid, vsync_wid;
1557         int primary_mon = PRIMARY_MONITOR(rinfo);
1558         int depth = var_to_depth(mode);
1559         int use_rmx = 0;
1560
1561         newmode = kmalloc(sizeof(struct radeon_regs), GFP_KERNEL);
1562         if (!newmode)
1563                 return -ENOMEM;
1564
1565         /* We always want engine to be idle on a mode switch, even
1566          * if we won't actually change the mode
1567          */
1568         radeon_engine_idle();
1569
1570         hSyncStart = mode->xres + mode->right_margin;
1571         hSyncEnd = hSyncStart + mode->hsync_len;
1572         hTotal = hSyncEnd + mode->left_margin;
1573
1574         vSyncStart = mode->yres + mode->lower_margin;
1575         vSyncEnd = vSyncStart + mode->vsync_len;
1576         vTotal = vSyncEnd + mode->upper_margin;
1577         pixClock = mode->pixclock;
1578
1579         sync = mode->sync;
1580         h_sync_pol = sync & FB_SYNC_HOR_HIGH_ACT ? 0 : 1;
1581         v_sync_pol = sync & FB_SYNC_VERT_HIGH_ACT ? 0 : 1;
1582
1583         if (primary_mon == MT_DFP || primary_mon == MT_LCD) {
1584                 if (rinfo->panel_info.xres < mode->xres)
1585                         mode->xres = rinfo->panel_info.xres;
1586                 if (rinfo->panel_info.yres < mode->yres)
1587                         mode->yres = rinfo->panel_info.yres;
1588
1589                 hTotal = mode->xres + rinfo->panel_info.hblank;
1590                 hSyncStart = mode->xres + rinfo->panel_info.hOver_plus;
1591                 hSyncEnd = hSyncStart + rinfo->panel_info.hSync_width;
1592
1593                 vTotal = mode->yres + rinfo->panel_info.vblank;
1594                 vSyncStart = mode->yres + rinfo->panel_info.vOver_plus;
1595                 vSyncEnd = vSyncStart + rinfo->panel_info.vSync_width;
1596
1597                 h_sync_pol = !rinfo->panel_info.hAct_high;
1598                 v_sync_pol = !rinfo->panel_info.vAct_high;
1599
1600                 pixClock = 100000000 / rinfo->panel_info.clock;
1601
1602                 if (rinfo->panel_info.use_bios_dividers) {
1603                         nopllcalc = 1;
1604                         newmode->ppll_div_3 = rinfo->panel_info.fbk_divider |
1605                                 (rinfo->panel_info.post_divider << 16);
1606                         newmode->ppll_ref_div = rinfo->panel_info.ref_divider;
1607                 }
1608         }
1609         dotClock = 1000000000 / pixClock;
1610         freq = dotClock / 10; /* x100 */
1611
1612         RTRACE("hStart = %d, hEnd = %d, hTotal = %d\n",
1613                 hSyncStart, hSyncEnd, hTotal);
1614         RTRACE("vStart = %d, vEnd = %d, vTotal = %d\n",
1615                 vSyncStart, vSyncEnd, vTotal);
1616
1617         hsync_wid = (hSyncEnd - hSyncStart) / 8;
1618         vsync_wid = vSyncEnd - vSyncStart;
1619         if (hsync_wid == 0)
1620                 hsync_wid = 1;
1621         else if (hsync_wid > 0x3f)      /* max */
1622                 hsync_wid = 0x3f;
1623
1624         if (vsync_wid == 0)
1625                 vsync_wid = 1;
1626         else if (vsync_wid > 0x1f)      /* max */
1627                 vsync_wid = 0x1f;
1628
1629         hSyncPol = mode->sync & FB_SYNC_HOR_HIGH_ACT ? 0 : 1;
1630         vSyncPol = mode->sync & FB_SYNC_VERT_HIGH_ACT ? 0 : 1;
1631
1632         cSync = mode->sync & FB_SYNC_COMP_HIGH_ACT ? (1 << 4) : 0;
1633
1634         format = radeon_get_dstbpp(depth);
1635         bytpp = mode->bits_per_pixel >> 3;
1636
1637         if ((primary_mon == MT_DFP) || (primary_mon == MT_LCD))
1638                 hsync_fudge = hsync_fudge_fp[format-1];
1639         else
1640                 hsync_fudge = hsync_adj_tab[format-1];
1641
1642         hsync_start = hSyncStart - 8 + hsync_fudge;
1643
1644         newmode->crtc_gen_cntl = CRTC_EXT_DISP_EN | CRTC_EN |
1645                                 (format << 8);
1646
1647         /* Clear auto-center etc... */
1648         newmode->crtc_more_cntl = rinfo->init_state.crtc_more_cntl;
1649         newmode->crtc_more_cntl &= 0xfffffff0;
1650         
1651         if ((primary_mon == MT_DFP) || (primary_mon == MT_LCD)) {
1652                 newmode->crtc_ext_cntl = VGA_ATI_LINEAR | XCRT_CNT_EN;
1653                 if (mirror)
1654                         newmode->crtc_ext_cntl |= CRTC_CRT_ON;
1655
1656                 newmode->crtc_gen_cntl &= ~(CRTC_DBL_SCAN_EN |
1657                                            CRTC_INTERLACE_EN);
1658         } else {
1659                 newmode->crtc_ext_cntl = VGA_ATI_LINEAR | XCRT_CNT_EN |
1660                                         CRTC_CRT_ON;
1661         }
1662
1663         newmode->dac_cntl = /* INREG(DAC_CNTL) | */ DAC_MASK_ALL | DAC_VGA_ADR_EN |
1664                            DAC_8BIT_EN;
1665
1666         newmode->crtc_h_total_disp = ((((hTotal / 8) - 1) & 0x3ff) |
1667                                      (((mode->xres / 8) - 1) << 16));
1668
1669         newmode->crtc_h_sync_strt_wid = ((hsync_start & 0x1fff) |
1670                                         (hsync_wid << 16) | (h_sync_pol << 23));
1671
1672         newmode->crtc_v_total_disp = ((vTotal - 1) & 0xffff) |
1673                                     ((mode->yres - 1) << 16);
1674
1675         newmode->crtc_v_sync_strt_wid = (((vSyncStart - 1) & 0xfff) |
1676                                          (vsync_wid << 16) | (v_sync_pol  << 23));
1677
1678         if (!(info->flags & FBINFO_HWACCEL_DISABLED)) {
1679                 /* We first calculate the engine pitch */
1680                 rinfo->pitch = ((mode->xres_virtual * ((mode->bits_per_pixel + 1) / 8) + 0x3f)
1681                                 & ~(0x3f)) >> 6;
1682
1683                 /* Then, re-multiply it to get the CRTC pitch */
1684                 newmode->crtc_pitch = (rinfo->pitch << 3) / ((mode->bits_per_pixel + 1) / 8);
1685         } else
1686                 newmode->crtc_pitch = (mode->xres_virtual >> 3);
1687
1688         newmode->crtc_pitch |= (newmode->crtc_pitch << 16);
1689
1690         /*
1691          * It looks like recent chips have a problem with SURFACE_CNTL,
1692          * setting SURF_TRANSLATION_DIS completely disables the
1693          * swapper as well, so we leave it unset now.
1694          */
1695         newmode->surface_cntl = 0;
1696
1697 #if defined(__BIG_ENDIAN)
1698
1699         /* Setup swapping on both apertures, though we currently
1700          * only use aperture 0, enabling swapper on aperture 1
1701          * won't harm
1702          */
1703         switch (mode->bits_per_pixel) {
1704                 case 16:
1705                         newmode->surface_cntl |= NONSURF_AP0_SWP_16BPP;
1706                         newmode->surface_cntl |= NONSURF_AP1_SWP_16BPP;
1707                         break;
1708                 case 24:        
1709                 case 32:
1710                         newmode->surface_cntl |= NONSURF_AP0_SWP_32BPP;
1711                         newmode->surface_cntl |= NONSURF_AP1_SWP_32BPP;
1712                         break;
1713         }
1714 #endif
1715
1716         /* Clear surface registers */
1717         for (i=0; i<8; i++) {
1718                 newmode->surf_lower_bound[i] = 0;
1719                 newmode->surf_upper_bound[i] = 0x1f;
1720                 newmode->surf_info[i] = 0;
1721         }
1722
1723         RTRACE("h_total_disp = 0x%x\t   hsync_strt_wid = 0x%x\n",
1724                 newmode->crtc_h_total_disp, newmode->crtc_h_sync_strt_wid);
1725         RTRACE("v_total_disp = 0x%x\t   vsync_strt_wid = 0x%x\n",
1726                 newmode->crtc_v_total_disp, newmode->crtc_v_sync_strt_wid);
1727
1728         rinfo->bpp = mode->bits_per_pixel;
1729         rinfo->depth = depth;
1730
1731         RTRACE("pixclock = %lu\n", (unsigned long)pixClock);
1732         RTRACE("freq = %lu\n", (unsigned long)freq);
1733
1734         /* We use PPLL_DIV_3 */
1735         newmode->clk_cntl_index = 0x300;
1736
1737         /* Calculate PPLL value if necessary */
1738         if (!nopllcalc)
1739                 radeon_calc_pll_regs(rinfo, newmode, freq);
1740
1741         newmode->vclk_ecp_cntl = rinfo->init_state.vclk_ecp_cntl;
1742
1743         if ((primary_mon == MT_DFP) || (primary_mon == MT_LCD)) {
1744                 unsigned int hRatio, vRatio;
1745
1746                 if (mode->xres > rinfo->panel_info.xres)
1747                         mode->xres = rinfo->panel_info.xres;
1748                 if (mode->yres > rinfo->panel_info.yres)
1749                         mode->yres = rinfo->panel_info.yres;
1750
1751                 newmode->fp_horz_stretch = (((rinfo->panel_info.xres / 8) - 1)
1752                                            << HORZ_PANEL_SHIFT);
1753                 newmode->fp_vert_stretch = ((rinfo->panel_info.yres - 1)
1754                                            << VERT_PANEL_SHIFT);
1755
1756                 if (mode->xres != rinfo->panel_info.xres) {
1757                         hRatio = round_div(mode->xres * HORZ_STRETCH_RATIO_MAX,
1758                                            rinfo->panel_info.xres);
1759                         newmode->fp_horz_stretch = (((((unsigned long)hRatio) & HORZ_STRETCH_RATIO_MASK)) |
1760                                                    (newmode->fp_horz_stretch &
1761                                                     (HORZ_PANEL_SIZE | HORZ_FP_LOOP_STRETCH |
1762                                                      HORZ_AUTO_RATIO_INC)));
1763                         newmode->fp_horz_stretch |= (HORZ_STRETCH_BLEND |
1764                                                     HORZ_STRETCH_ENABLE);
1765                         use_rmx = 1;
1766                 }
1767                 newmode->fp_horz_stretch &= ~HORZ_AUTO_RATIO;
1768
1769                 if (mode->yres != rinfo->panel_info.yres) {
1770                         vRatio = round_div(mode->yres * VERT_STRETCH_RATIO_MAX,
1771                                            rinfo->panel_info.yres);
1772                         newmode->fp_vert_stretch = (((((unsigned long)vRatio) & VERT_STRETCH_RATIO_MASK)) |
1773                                                    (newmode->fp_vert_stretch &
1774                                                    (VERT_PANEL_SIZE | VERT_STRETCH_RESERVED)));
1775                         newmode->fp_vert_stretch |= (VERT_STRETCH_BLEND |
1776                                                     VERT_STRETCH_ENABLE);
1777                         use_rmx = 1;
1778                 }
1779                 newmode->fp_vert_stretch &= ~VERT_AUTO_RATIO_EN;
1780
1781                 newmode->fp_gen_cntl = (rinfo->init_state.fp_gen_cntl & (u32)
1782                                        ~(FP_SEL_CRTC2 |
1783                                          FP_RMX_HVSYNC_CONTROL_EN |
1784                                          FP_DFP_SYNC_SEL |
1785                                          FP_CRT_SYNC_SEL |
1786                                          FP_CRTC_LOCK_8DOT |
1787                                          FP_USE_SHADOW_EN |
1788                                          FP_CRTC_USE_SHADOW_VEND |
1789                                          FP_CRT_SYNC_ALT));
1790
1791                 newmode->fp_gen_cntl |= (FP_CRTC_DONT_SHADOW_VPAR |
1792                                         FP_CRTC_DONT_SHADOW_HEND |
1793                                         FP_PANEL_FORMAT);
1794
1795                 if (IS_R300_VARIANT(rinfo) ||
1796                     (rinfo->family == CHIP_FAMILY_R200)) {
1797                         newmode->fp_gen_cntl &= ~R200_FP_SOURCE_SEL_MASK;
1798                         if (use_rmx)
1799                                 newmode->fp_gen_cntl |= R200_FP_SOURCE_SEL_RMX;
1800                         else
1801                                 newmode->fp_gen_cntl |= R200_FP_SOURCE_SEL_CRTC1;
1802                 } else
1803                         newmode->fp_gen_cntl |= FP_SEL_CRTC1;
1804
1805                 newmode->lvds_gen_cntl = rinfo->init_state.lvds_gen_cntl;
1806                 newmode->lvds_pll_cntl = rinfo->init_state.lvds_pll_cntl;
1807                 newmode->tmds_crc = rinfo->init_state.tmds_crc;
1808                 newmode->tmds_transmitter_cntl = rinfo->init_state.tmds_transmitter_cntl;
1809
1810                 if (primary_mon == MT_LCD) {
1811                         newmode->lvds_gen_cntl |= (LVDS_ON | LVDS_BLON);
1812                         newmode->fp_gen_cntl &= ~(FP_FPON | FP_TMDS_EN);
1813                 } else {
1814                         /* DFP */
1815                         newmode->fp_gen_cntl |= (FP_FPON | FP_TMDS_EN);
1816                         newmode->tmds_transmitter_cntl &= ~(TMDS_PLLRST);
1817                         /* TMDS_PLL_EN bit is reversed on RV (and mobility) chips */
1818                         if (IS_R300_VARIANT(rinfo) ||
1819                             (rinfo->family == CHIP_FAMILY_R200) || !rinfo->has_CRTC2)
1820                                 newmode->tmds_transmitter_cntl &= ~TMDS_PLL_EN;
1821                         else
1822                                 newmode->tmds_transmitter_cntl |= TMDS_PLL_EN;
1823                         newmode->crtc_ext_cntl &= ~CRTC_CRT_ON;
1824                 }
1825
1826                 newmode->fp_crtc_h_total_disp = (((rinfo->panel_info.hblank / 8) & 0x3ff) |
1827                                 (((mode->xres / 8) - 1) << 16));
1828                 newmode->fp_crtc_v_total_disp = (rinfo->panel_info.vblank & 0xffff) |
1829                                 ((mode->yres - 1) << 16);
1830                 newmode->fp_h_sync_strt_wid = ((rinfo->panel_info.hOver_plus & 0x1fff) |
1831                                 (hsync_wid << 16) | (h_sync_pol << 23));
1832                 newmode->fp_v_sync_strt_wid = ((rinfo->panel_info.vOver_plus & 0xfff) |
1833                                 (vsync_wid << 16) | (v_sync_pol  << 23));
1834         }
1835
1836         /* do it! */
1837         if (!rinfo->asleep) {
1838                 memcpy(&rinfo->state, newmode, sizeof(*newmode));
1839                 radeon_write_mode (rinfo, newmode, 0);
1840                 /* (re)initialize the engine */
1841                 if (!(info->flags & FBINFO_HWACCEL_DISABLED))
1842                         radeonfb_engine_init (rinfo);
1843         }
1844         /* Update fix */
1845         if (!(info->flags & FBINFO_HWACCEL_DISABLED))
1846                 info->fix.line_length = rinfo->pitch*64;
1847         else
1848                 info->fix.line_length = mode->xres_virtual
1849                         * ((mode->bits_per_pixel + 1) / 8);
1850         info->fix.visual = rinfo->depth == 8 ? FB_VISUAL_PSEUDOCOLOR
1851                 : FB_VISUAL_DIRECTCOLOR;
1852
1853 #ifdef CONFIG_BOOTX_TEXT
1854         /* Update debug text engine */
1855         btext_update_display(rinfo->fb_base_phys, mode->xres, mode->yres,
1856                              rinfo->depth, info->fix.line_length);
1857 #endif
1858
1859         kfree(newmode);
1860         return 0;
1861 }
1862
1863
1864 static struct fb_ops radeonfb_ops = {
1865         .owner                  = THIS_MODULE,
1866         .fb_check_var           = radeonfb_check_var,
1867         .fb_set_par             = radeonfb_set_par,
1868         .fb_setcolreg           = radeonfb_setcolreg,
1869         .fb_setcmap             = radeonfb_setcmap,
1870         .fb_pan_display         = radeonfb_pan_display,
1871         .fb_blank               = radeonfb_blank,
1872         .fb_ioctl               = radeonfb_ioctl,
1873         .fb_sync                = radeonfb_sync,
1874         .fb_fillrect            = radeonfb_fillrect,
1875         .fb_copyarea            = radeonfb_copyarea,
1876         .fb_imageblit           = radeonfb_imageblit,
1877         .fb_cursor              = soft_cursor,
1878 };
1879
1880
1881 static int __devinit radeon_set_fbinfo (struct radeonfb_info *rinfo)
1882 {
1883         struct fb_info *info = rinfo->info;
1884
1885         info->par = rinfo;
1886         info->pseudo_palette = rinfo->pseudo_palette;
1887         info->flags = FBINFO_DEFAULT
1888                     | FBINFO_HWACCEL_COPYAREA
1889                     | FBINFO_HWACCEL_FILLRECT
1890                     | FBINFO_HWACCEL_XPAN
1891                     | FBINFO_HWACCEL_YPAN;
1892         info->fbops = &radeonfb_ops;
1893         info->screen_base = rinfo->fb_base;
1894         info->screen_size = rinfo->mapped_vram;
1895         /* Fill fix common fields */
1896         strlcpy(info->fix.id, rinfo->name, sizeof(info->fix.id));
1897         info->fix.smem_start = rinfo->fb_base_phys;
1898         info->fix.smem_len = rinfo->video_ram;
1899         info->fix.type = FB_TYPE_PACKED_PIXELS;
1900         info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
1901         info->fix.xpanstep = 8;
1902         info->fix.ypanstep = 1;
1903         info->fix.ywrapstep = 0;
1904         info->fix.type_aux = 0;
1905         info->fix.mmio_start = rinfo->mmio_base_phys;
1906         info->fix.mmio_len = RADEON_REGSIZE;
1907         info->fix.accel = FB_ACCEL_ATI_RADEON;
1908
1909         fb_alloc_cmap(&info->cmap, 256, 0);
1910
1911         if (noaccel)
1912                 info->flags |= FBINFO_HWACCEL_DISABLED;
1913
1914         return 0;
1915 }
1916
1917
1918 #ifdef CONFIG_PMAC_BACKLIGHT
1919
1920 /* TODO: Dbl check these tables, we don't go up to full ON backlight
1921  * in these, possibly because we noticed MacOS doesn't, but I'd prefer
1922  * having some more official numbers from ATI
1923  */
1924 static int backlight_conv_m6[] = {
1925         0xff, 0xc0, 0xb5, 0xaa, 0x9f, 0x94, 0x89, 0x7e,
1926         0x73, 0x68, 0x5d, 0x52, 0x47, 0x3c, 0x31, 0x24
1927 };
1928 static int backlight_conv_m7[] = {
1929         0x00, 0x3f, 0x4a, 0x55, 0x60, 0x6b, 0x76, 0x81,
1930         0x8c, 0x97, 0xa2, 0xad, 0xb8, 0xc3, 0xce, 0xd9
1931 };
1932
1933 #define BACKLIGHT_LVDS_OFF
1934 #undef BACKLIGHT_DAC_OFF
1935
1936 /* We turn off the LCD completely instead of just dimming the backlight.
1937  * This provides some greater power saving and the display is useless
1938  * without backlight anyway.
1939  */
1940 static int radeon_set_backlight_enable(int on, int level, void *data)
1941 {
1942         struct radeonfb_info *rinfo = (struct radeonfb_info *)data;
1943         u32 lvds_gen_cntl, tmpPixclksCntl;
1944         int* conv_table;
1945
1946         if (rinfo->mon1_type != MT_LCD)
1947                 return 0;
1948
1949         /* Pardon me for that hack... maybe some day we can figure
1950          * out in what direction backlight should work on a given
1951          * panel ?
1952          */
1953         if ((rinfo->family == CHIP_FAMILY_RV200 ||
1954              rinfo->family == CHIP_FAMILY_RV250 ||
1955              rinfo->family == CHIP_FAMILY_RV280 ||
1956              rinfo->family == CHIP_FAMILY_RV350) &&
1957             !machine_is_compatible("PowerBook4,3") &&
1958             !machine_is_compatible("PowerBook6,3") &&
1959             !machine_is_compatible("PowerBook6,5"))
1960                 conv_table = backlight_conv_m7;
1961         else
1962                 conv_table = backlight_conv_m6;
1963
1964         del_timer_sync(&rinfo->lvds_timer);
1965         radeon_engine_idle();
1966
1967         lvds_gen_cntl = INREG(LVDS_GEN_CNTL);
1968         if (on && (level > BACKLIGHT_OFF)) {
1969                 lvds_gen_cntl &= ~LVDS_DISPLAY_DIS;
1970                 if (!(lvds_gen_cntl & LVDS_BLON) || !(lvds_gen_cntl & LVDS_ON)) {
1971                         lvds_gen_cntl |= (rinfo->init_state.lvds_gen_cntl & LVDS_DIGON);
1972                         lvds_gen_cntl |= LVDS_BLON | LVDS_EN;
1973                         OUTREG(LVDS_GEN_CNTL, lvds_gen_cntl);
1974                         lvds_gen_cntl &= ~LVDS_BL_MOD_LEVEL_MASK;
1975                         lvds_gen_cntl |= (conv_table[level] <<
1976                                           LVDS_BL_MOD_LEVEL_SHIFT);
1977                         lvds_gen_cntl |= LVDS_ON;
1978                         lvds_gen_cntl |= (rinfo->init_state.lvds_gen_cntl & LVDS_BL_MOD_EN);
1979                         rinfo->pending_lvds_gen_cntl = lvds_gen_cntl;
1980                         mod_timer(&rinfo->lvds_timer,
1981                                   jiffies + msecs_to_jiffies(rinfo->panel_info.pwr_delay));
1982                 } else {
1983                         lvds_gen_cntl &= ~LVDS_BL_MOD_LEVEL_MASK;
1984                         lvds_gen_cntl |= (conv_table[level] <<
1985                                           LVDS_BL_MOD_LEVEL_SHIFT);
1986                         OUTREG(LVDS_GEN_CNTL, lvds_gen_cntl);
1987                 }
1988                 rinfo->init_state.lvds_gen_cntl &= ~LVDS_STATE_MASK;
1989                 rinfo->init_state.lvds_gen_cntl |= rinfo->pending_lvds_gen_cntl
1990                         & LVDS_STATE_MASK;
1991         } else {
1992                 /* Asic bug, when turning off LVDS_ON, we have to make sure
1993                    RADEON_PIXCLK_LVDS_ALWAYS_ON bit is off
1994                 */
1995                 tmpPixclksCntl = INPLL(PIXCLKS_CNTL);
1996                 if (rinfo->is_mobility || rinfo->is_IGP)
1997                         OUTPLLP(PIXCLKS_CNTL, 0, ~PIXCLK_LVDS_ALWAYS_ONb);
1998                 lvds_gen_cntl &= ~(LVDS_BL_MOD_LEVEL_MASK | LVDS_BL_MOD_EN);
1999                 lvds_gen_cntl |= (conv_table[0] <<
2000                                   LVDS_BL_MOD_LEVEL_SHIFT);
2001                 lvds_gen_cntl |= LVDS_DISPLAY_DIS;
2002                 OUTREG(LVDS_GEN_CNTL, lvds_gen_cntl);
2003                 udelay(100);
2004                 lvds_gen_cntl &= ~(LVDS_ON | LVDS_EN);
2005                 OUTREG(LVDS_GEN_CNTL, lvds_gen_cntl);
2006                 lvds_gen_cntl &= ~(LVDS_DIGON);
2007                 rinfo->pending_lvds_gen_cntl = lvds_gen_cntl;
2008                 mod_timer(&rinfo->lvds_timer,
2009                           jiffies + msecs_to_jiffies(rinfo->panel_info.pwr_delay));
2010                 if (rinfo->is_mobility || rinfo->is_IGP)
2011                         OUTPLL(PIXCLKS_CNTL, tmpPixclksCntl);
2012         }
2013         rinfo->init_state.lvds_gen_cntl &= ~LVDS_STATE_MASK;
2014         rinfo->init_state.lvds_gen_cntl |= (lvds_gen_cntl & LVDS_STATE_MASK);
2015
2016         return 0;
2017 }
2018
2019
2020 static int radeon_set_backlight_level(int level, void *data)
2021 {
2022         return radeon_set_backlight_enable(1, level, data);
2023 }
2024 #endif /* CONFIG_PMAC_BACKLIGHT */
2025
2026
2027 /*
2028  * This reconfigure the card's internal memory map. In theory, we'd like
2029  * to setup the card's memory at the same address as it's PCI bus address,
2030  * and the AGP aperture right after that so that system RAM on 32 bits
2031  * machines at least, is directly accessible. However, doing so would
2032  * conflict with the current XFree drivers...
2033  * Ultimately, I hope XFree, GATOS and ATI binary drivers will all agree
2034  * on the proper way to set this up and duplicate this here. In the meantime,
2035  * I put the card's memory at 0 in card space and AGP at some random high
2036  * local (0xe0000000 for now) that will be changed by XFree/DRI anyway
2037  */
2038 #ifdef CONFIG_PPC_OF
2039 #undef SET_MC_FB_FROM_APERTURE
2040 static void fixup_memory_mappings(struct radeonfb_info *rinfo)
2041 {
2042         u32 save_crtc_gen_cntl, save_crtc2_gen_cntl = 0;
2043         u32 save_crtc_ext_cntl;
2044         u32 aper_base, aper_size;
2045         u32 agp_base;
2046
2047         /* First, we disable display to avoid interfering */
2048         if (rinfo->has_CRTC2) {
2049                 save_crtc2_gen_cntl = INREG(CRTC2_GEN_CNTL);
2050                 OUTREG(CRTC2_GEN_CNTL, save_crtc2_gen_cntl | CRTC2_DISP_REQ_EN_B);
2051         }
2052         save_crtc_gen_cntl = INREG(CRTC_GEN_CNTL);
2053         save_crtc_ext_cntl = INREG(CRTC_EXT_CNTL);
2054         
2055         OUTREG(CRTC_EXT_CNTL, save_crtc_ext_cntl | CRTC_DISPLAY_DIS);
2056         OUTREG(CRTC_GEN_CNTL, save_crtc_gen_cntl | CRTC_DISP_REQ_EN_B);
2057         mdelay(100);
2058
2059         aper_base = INREG(CONFIG_APER_0_BASE);
2060         aper_size = INREG(CONFIG_APER_SIZE);
2061
2062 #ifdef SET_MC_FB_FROM_APERTURE
2063         /* Set framebuffer to be at the same address as set in PCI BAR */
2064         OUTREG(MC_FB_LOCATION, 
2065                 ((aper_base + aper_size - 1) & 0xffff0000) | (aper_base >> 16));
2066         rinfo->fb_local_base = aper_base;
2067 #else
2068         OUTREG(MC_FB_LOCATION, 0x7fff0000);
2069         rinfo->fb_local_base = 0;
2070 #endif
2071         agp_base = aper_base + aper_size;
2072         if (agp_base & 0xf0000000)
2073                 agp_base = (aper_base | 0x0fffffff) + 1;
2074
2075         /* Set AGP to be just after the framebuffer on a 256Mb boundary. This
2076          * assumes the FB isn't mapped to 0xf0000000 or above, but this is
2077          * always the case on PPCs afaik.
2078          */
2079 #ifdef SET_MC_FB_FROM_APERTURE
2080         OUTREG(MC_AGP_LOCATION, 0xffff0000 | (agp_base >> 16));
2081 #else
2082         OUTREG(MC_AGP_LOCATION, 0xffffe000);
2083 #endif
2084
2085         /* Fixup the display base addresses & engine offsets while we
2086          * are at it as well
2087          */
2088 #ifdef SET_MC_FB_FROM_APERTURE
2089         OUTREG(DISPLAY_BASE_ADDR, aper_base);
2090         if (rinfo->has_CRTC2)
2091                 OUTREG(CRTC2_DISPLAY_BASE_ADDR, aper_base);
2092         OUTREG(OV0_BASE_ADDR, aper_base);
2093 #else
2094         OUTREG(DISPLAY_BASE_ADDR, 0);
2095         if (rinfo->has_CRTC2)
2096                 OUTREG(CRTC2_DISPLAY_BASE_ADDR, 0);
2097         OUTREG(OV0_BASE_ADDR, 0);
2098 #endif
2099         mdelay(100);
2100
2101         /* Restore display settings */
2102         OUTREG(CRTC_GEN_CNTL, save_crtc_gen_cntl);
2103         OUTREG(CRTC_EXT_CNTL, save_crtc_ext_cntl);
2104         if (rinfo->has_CRTC2)
2105                 OUTREG(CRTC2_GEN_CNTL, save_crtc2_gen_cntl);    
2106
2107         RTRACE("aper_base: %08x MC_FB_LOC to: %08x, MC_AGP_LOC to: %08x\n",
2108                 aper_base,
2109                 ((aper_base + aper_size - 1) & 0xffff0000) | (aper_base >> 16),
2110                 0xffff0000 | (agp_base >> 16));
2111 }
2112 #endif /* CONFIG_PPC_OF */
2113
2114
2115 static void radeon_identify_vram(struct radeonfb_info *rinfo)
2116 {
2117         u32 tmp;
2118
2119         /* framebuffer size */
2120         if ((rinfo->family == CHIP_FAMILY_RS100) ||
2121             (rinfo->family == CHIP_FAMILY_RS200) ||
2122             (rinfo->family == CHIP_FAMILY_RS300)) {
2123           u32 tom = INREG(NB_TOM);
2124           tmp = ((((tom >> 16) - (tom & 0xffff) + 1) << 6) * 1024);
2125
2126                 radeon_fifo_wait(6);
2127           OUTREG(MC_FB_LOCATION, tom);
2128           OUTREG(DISPLAY_BASE_ADDR, (tom & 0xffff) << 16);
2129           OUTREG(CRTC2_DISPLAY_BASE_ADDR, (tom & 0xffff) << 16);
2130           OUTREG(OV0_BASE_ADDR, (tom & 0xffff) << 16);
2131
2132           /* This is supposed to fix the crtc2 noise problem. */
2133           OUTREG(GRPH2_BUFFER_CNTL, INREG(GRPH2_BUFFER_CNTL) & ~0x7f0000);
2134
2135           if ((rinfo->family == CHIP_FAMILY_RS100) ||
2136               (rinfo->family == CHIP_FAMILY_RS200)) {
2137              /* This is to workaround the asic bug for RMX, some versions
2138                 of BIOS dosen't have this register initialized correctly.
2139              */
2140              OUTREGP(CRTC_MORE_CNTL, CRTC_H_CUTOFF_ACTIVE_EN,
2141                      ~CRTC_H_CUTOFF_ACTIVE_EN);
2142           }
2143         } else {
2144           tmp = INREG(CONFIG_MEMSIZE);
2145         }
2146
2147         /* mem size is bits [28:0], mask off the rest */
2148         rinfo->video_ram = tmp & CONFIG_MEMSIZE_MASK;
2149
2150         /*
2151          * Hack to get around some busted production M6's
2152          * reporting no ram
2153          */
2154         if (rinfo->video_ram == 0) {
2155                 switch (rinfo->pdev->device) {
2156                 case PCI_CHIP_RADEON_LY:
2157                 case PCI_CHIP_RADEON_LZ:
2158                         rinfo->video_ram = 8192 * 1024;
2159                         break;
2160                 default:
2161                         break;
2162                 }
2163         }
2164
2165
2166         /*
2167          * Now try to identify VRAM type
2168          */
2169         if (rinfo->is_IGP || (rinfo->family >= CHIP_FAMILY_R300) ||
2170             (INREG(MEM_SDRAM_MODE_REG) & (1<<30)))
2171                 rinfo->vram_ddr = 1;
2172         else
2173                 rinfo->vram_ddr = 0;
2174
2175         tmp = INREG(MEM_CNTL);
2176         if (IS_R300_VARIANT(rinfo)) {
2177                 tmp &=  R300_MEM_NUM_CHANNELS_MASK;
2178                 switch (tmp) {
2179                 case 0:  rinfo->vram_width = 64; break;
2180                 case 1:  rinfo->vram_width = 128; break;
2181                 case 2:  rinfo->vram_width = 256; break;
2182                 default: rinfo->vram_width = 128; break;
2183                 }
2184         } else if ((rinfo->family == CHIP_FAMILY_RV100) ||
2185                    (rinfo->family == CHIP_FAMILY_RS100) ||
2186                    (rinfo->family == CHIP_FAMILY_RS200)){
2187                 if (tmp & RV100_MEM_HALF_MODE)
2188                         rinfo->vram_width = 32;
2189                 else
2190                         rinfo->vram_width = 64;
2191         } else {
2192                 if (tmp & MEM_NUM_CHANNELS_MASK)
2193                         rinfo->vram_width = 128;
2194                 else
2195                         rinfo->vram_width = 64;
2196         }
2197
2198         /* This may not be correct, as some cards can have half of channel disabled
2199          * ToDo: identify these cases
2200          */
2201
2202         RTRACE("radeonfb (%s): Found %ldk of %s %d bits wide videoram\n",
2203                pci_name(rinfo->pdev),
2204                rinfo->video_ram / 1024,
2205                rinfo->vram_ddr ? "DDR" : "SDRAM",
2206                rinfo->vram_width);
2207 }
2208
2209 /*
2210  * Sysfs
2211  */
2212
2213 static ssize_t radeon_show_one_edid(char *buf, loff_t off, size_t count, const u8 *edid)
2214 {
2215         if (off > EDID_LENGTH)
2216                 return 0;
2217
2218         if (off + count > EDID_LENGTH)
2219                 count = EDID_LENGTH - off;
2220
2221         memcpy(buf, edid + off, count);
2222
2223         return count;
2224 }
2225
2226
2227 static ssize_t radeon_show_edid1(struct kobject *kobj, char *buf, loff_t off, size_t count)
2228 {
2229         struct device *dev = container_of(kobj, struct device, kobj);
2230         struct pci_dev *pdev = to_pci_dev(dev);
2231         struct fb_info *info = pci_get_drvdata(pdev);
2232         struct radeonfb_info *rinfo = info->par;
2233
2234         return radeon_show_one_edid(buf, off, count, rinfo->mon1_EDID);
2235 }
2236
2237
2238 static ssize_t radeon_show_edid2(struct kobject *kobj, char *buf, loff_t off, size_t count)
2239 {
2240         struct device *dev = container_of(kobj, struct device, kobj);
2241         struct pci_dev *pdev = to_pci_dev(dev);
2242         struct fb_info *info = pci_get_drvdata(pdev);
2243         struct radeonfb_info *rinfo = info->par;
2244
2245         return radeon_show_one_edid(buf, off, count, rinfo->mon2_EDID);
2246 }
2247
2248 static struct bin_attribute edid1_attr = {
2249         .attr   = {
2250                 .name   = "edid1",
2251                 .owner  = THIS_MODULE,
2252                 .mode   = 0444,
2253         },
2254         .size   = EDID_LENGTH,
2255         .read   = radeon_show_edid1,
2256 };
2257
2258 static struct bin_attribute edid2_attr = {
2259         .attr   = {
2260                 .name   = "edid2",
2261                 .owner  = THIS_MODULE,
2262                 .mode   = 0444,
2263         },
2264         .size   = EDID_LENGTH,
2265         .read   = radeon_show_edid2,
2266 };
2267
2268
2269 static int radeonfb_pci_register (struct pci_dev *pdev,
2270                                   const struct pci_device_id *ent)
2271 {
2272         struct fb_info *info;
2273         struct radeonfb_info *rinfo;
2274         int ret;
2275
2276         RTRACE("radeonfb_pci_register BEGIN\n");
2277         
2278         /* Enable device in PCI config */
2279         ret = pci_enable_device(pdev);
2280         if (ret < 0) {
2281                 printk(KERN_ERR "radeonfb (%s): Cannot enable PCI device\n",
2282                        pci_name(pdev));
2283                 goto err_out;
2284         }
2285
2286         info = framebuffer_alloc(sizeof(struct radeonfb_info), &pdev->dev);
2287         if (!info) {
2288                 printk (KERN_ERR "radeonfb (%s): could not allocate memory\n",
2289                         pci_name(pdev));
2290                 ret = -ENOMEM;
2291                 goto err_disable;
2292         }
2293         rinfo = info->par;
2294         rinfo->info = info;     
2295         rinfo->pdev = pdev;
2296         
2297         spin_lock_init(&rinfo->reg_lock);
2298         init_timer(&rinfo->lvds_timer);
2299         rinfo->lvds_timer.function = radeon_lvds_timer_func;
2300         rinfo->lvds_timer.data = (unsigned long)rinfo;
2301
2302         strcpy(rinfo->name, "ATI Radeon XX ");
2303         rinfo->name[11] = ent->device >> 8;
2304         rinfo->name[12] = ent->device & 0xFF;
2305         rinfo->family = ent->driver_data & CHIP_FAMILY_MASK;
2306         rinfo->chipset = pdev->device;
2307         rinfo->has_CRTC2 = (ent->driver_data & CHIP_HAS_CRTC2) != 0;
2308         rinfo->is_mobility = (ent->driver_data & CHIP_IS_MOBILITY) != 0;
2309         rinfo->is_IGP = (ent->driver_data & CHIP_IS_IGP) != 0;
2310
2311         /* Set base addrs */
2312         rinfo->fb_base_phys = pci_resource_start (pdev, 0);
2313         rinfo->mmio_base_phys = pci_resource_start (pdev, 2);
2314
2315         /* request the mem regions */
2316         ret = pci_request_region(pdev, 0, "radeonfb framebuffer");
2317         if (ret < 0) {
2318                 printk( KERN_ERR "radeonfb (%s): cannot request region 0.\n",
2319                         pci_name(rinfo->pdev));
2320                 goto err_release_fb;
2321         }
2322
2323         ret = pci_request_region(pdev, 2, "radeonfb mmio");
2324         if (ret < 0) {
2325                 printk( KERN_ERR "radeonfb (%s): cannot request region 2.\n",
2326                         pci_name(rinfo->pdev));
2327                 goto err_release_pci0;
2328         }
2329
2330         /* map the regions */
2331         rinfo->mmio_base = ioremap(rinfo->mmio_base_phys, RADEON_REGSIZE);
2332         if (!rinfo->mmio_base) {
2333                 printk(KERN_ERR "radeonfb (%s): cannot map MMIO\n",
2334                        pci_name(rinfo->pdev));
2335                 ret = -EIO;
2336                 goto err_release_pci2;
2337         }
2338
2339         rinfo->fb_local_base = INREG(MC_FB_LOCATION) << 16;
2340
2341         /*
2342          * Check for errata
2343          */
2344         rinfo->errata = 0;
2345         if (rinfo->family == CHIP_FAMILY_R300 &&
2346             (INREG(CONFIG_CNTL) & CFG_ATI_REV_ID_MASK)
2347             == CFG_ATI_REV_A11)
2348                 rinfo->errata |= CHIP_ERRATA_R300_CG;
2349
2350         if (rinfo->family == CHIP_FAMILY_RV200 ||
2351             rinfo->family == CHIP_FAMILY_RS200)
2352                 rinfo->errata |= CHIP_ERRATA_PLL_DUMMYREADS;
2353
2354         if (rinfo->family == CHIP_FAMILY_RV100 ||
2355             rinfo->family == CHIP_FAMILY_RS100 ||
2356             rinfo->family == CHIP_FAMILY_RS200)
2357                 rinfo->errata |= CHIP_ERRATA_PLL_DELAY;
2358
2359 #ifdef CONFIG_PPC_OF
2360         /* On PPC, we obtain the OF device-node pointer to the firmware
2361          * data for this chip
2362          */
2363         rinfo->of_node = pci_device_to_OF_node(pdev);
2364         if (rinfo->of_node == NULL)
2365                 printk(KERN_WARNING "radeonfb (%s): Cannot match card to OF node !\n",
2366                        pci_name(rinfo->pdev));
2367
2368         /* On PPC, the firmware sets up a memory mapping that tends
2369          * to cause lockups when enabling the engine. We reconfigure
2370          * the card internal memory mappings properly
2371          */
2372         fixup_memory_mappings(rinfo);
2373 #endif /* CONFIG_PPC_OF */
2374
2375         /* Get VRAM size and type */
2376         radeon_identify_vram(rinfo);
2377
2378         rinfo->mapped_vram = min_t(unsigned long, MAX_MAPPED_VRAM, rinfo->video_ram);
2379
2380         do {
2381                 rinfo->fb_base = ioremap (rinfo->fb_base_phys,
2382                                           rinfo->mapped_vram);
2383         } while (   rinfo->fb_base == 0 &&
2384                   ((rinfo->mapped_vram /=2) >= MIN_MAPPED_VRAM) );
2385
2386         if (rinfo->fb_base == NULL) {
2387                 printk (KERN_ERR "radeonfb (%s): cannot map FB\n",
2388                         pci_name(rinfo->pdev));
2389                 ret = -EIO;
2390                 goto err_unmap_rom;
2391         }
2392
2393         RTRACE("radeonfb (%s): mapped %ldk videoram\n", pci_name(rinfo->pdev),
2394                rinfo->mapped_vram/1024);
2395
2396         /*
2397          * Map the BIOS ROM if any and retreive PLL parameters from
2398          * the BIOS. We skip that on mobility chips as the real panel
2399          * values we need aren't in the ROM but in the BIOS image in
2400          * memory. This is definitely not the best meacnism though,
2401          * we really need the arch code to tell us which is the "primary"
2402          * video adapter to use the memory image (or better, the arch
2403          * should provide us a copy of the BIOS image to shield us from
2404          * archs who would store that elsewhere and/or could initialize
2405          * more than one adapter during boot).
2406          */
2407         if (!rinfo->is_mobility)
2408                 radeon_map_ROM(rinfo, pdev);
2409
2410         /*
2411          * On x86, the primary display on laptop may have it's BIOS
2412          * ROM elsewhere, try to locate it at the legacy memory hole.
2413          * We probably need to make sure this is the primary display,
2414          * but that is difficult without some arch support.
2415          */
2416 #ifdef CONFIG_X86
2417         if (rinfo->bios_seg == NULL)
2418                 radeon_find_mem_vbios(rinfo);
2419 #endif
2420
2421         /* If both above failed, try the BIOS ROM again for mobility
2422          * chips
2423          */
2424         if (rinfo->bios_seg == NULL && rinfo->is_mobility)
2425                 radeon_map_ROM(rinfo, pdev);
2426
2427         /* Get informations about the board's PLL */
2428         radeon_get_pllinfo(rinfo);
2429
2430 #ifdef CONFIG_FB_RADEON_I2C
2431         /* Register I2C bus */
2432         radeon_create_i2c_busses(rinfo);
2433 #endif
2434
2435         /* set all the vital stuff */
2436         radeon_set_fbinfo (rinfo);
2437
2438         /* Probe screen types */
2439         radeon_probe_screens(rinfo, monitor_layout, ignore_edid);
2440
2441         /* Build mode list, check out panel native model */
2442         radeon_check_modes(rinfo, mode_option);
2443
2444         /* Register some sysfs stuff (should be done better) */
2445         if (rinfo->mon1_EDID)
2446                 sysfs_create_bin_file(&rinfo->pdev->dev.kobj, &edid1_attr);
2447         if (rinfo->mon2_EDID)
2448                 sysfs_create_bin_file(&rinfo->pdev->dev.kobj, &edid2_attr);
2449
2450         /* save current mode regs before we switch into the new one
2451          * so we can restore this upon __exit
2452          */
2453         radeon_save_state (rinfo, &rinfo->init_state);
2454         memcpy(&rinfo->state, &rinfo->init_state, sizeof(struct radeon_regs));
2455
2456         /* Setup Power Management capabilities */
2457         if (default_dynclk < -1) {
2458                 /* -2 is special: means  ON on mobility chips and do not
2459                  * change on others
2460                  */
2461                 radeonfb_pm_init(rinfo, rinfo->is_mobility ? 1 : -1);
2462         } else
2463                 radeonfb_pm_init(rinfo, default_dynclk);
2464
2465         pci_set_drvdata(pdev, info);
2466
2467         /* Register with fbdev layer */
2468         ret = register_framebuffer(info);
2469         if (ret < 0) {
2470                 printk (KERN_ERR "radeonfb (%s): could not register framebuffer\n",
2471                         pci_name(rinfo->pdev));
2472                 goto err_unmap_fb;
2473         }
2474
2475 #ifdef CONFIG_MTRR
2476         rinfo->mtrr_hdl = nomtrr ? -1 : mtrr_add(rinfo->fb_base_phys,
2477                                                  rinfo->video_ram,
2478                                                  MTRR_TYPE_WRCOMB, 1);
2479 #endif
2480
2481 #ifdef CONFIG_PMAC_BACKLIGHT
2482         if (rinfo->mon1_type == MT_LCD) {
2483                 register_backlight_controller(&radeon_backlight_controller,
2484                                               rinfo, "ati");
2485                 register_backlight_controller(&radeon_backlight_controller,
2486                                               rinfo, "mnca");
2487         }
2488 #endif
2489
2490         printk ("radeonfb (%s): %s\n", pci_name(rinfo->pdev), rinfo->name);
2491
2492         if (rinfo->bios_seg)
2493                 radeon_unmap_ROM(rinfo, pdev);
2494         RTRACE("radeonfb_pci_register END\n");
2495
2496         return 0;
2497 err_unmap_fb:
2498         iounmap(rinfo->fb_base);
2499 err_unmap_rom:
2500         kfree(rinfo->mon1_EDID);
2501         kfree(rinfo->mon2_EDID);
2502         if (rinfo->mon1_modedb)
2503                 fb_destroy_modedb(rinfo->mon1_modedb);
2504         fb_dealloc_cmap(&info->cmap);
2505 #ifdef CONFIG_FB_RADEON_I2C
2506         radeon_delete_i2c_busses(rinfo);
2507 #endif
2508         if (rinfo->bios_seg)
2509                 radeon_unmap_ROM(rinfo, pdev);
2510         iounmap(rinfo->mmio_base);
2511 err_release_pci2:
2512         pci_release_region(pdev, 2);
2513 err_release_pci0:
2514         pci_release_region(pdev, 0);
2515 err_release_fb:
2516         framebuffer_release(info);
2517 err_disable:
2518         pci_disable_device(pdev);
2519 err_out:
2520         return ret;
2521 }
2522
2523
2524
2525 static void __devexit radeonfb_pci_unregister (struct pci_dev *pdev)
2526 {
2527         struct fb_info *info = pci_get_drvdata(pdev);
2528         struct radeonfb_info *rinfo = info->par;
2529  
2530         if (!rinfo)
2531                 return;
2532  
2533         radeonfb_pm_exit(rinfo);
2534
2535         if (rinfo->mon1_EDID)
2536                 sysfs_remove_bin_file(&rinfo->pdev->dev.kobj, &edid1_attr);
2537         if (rinfo->mon2_EDID)
2538                 sysfs_remove_bin_file(&rinfo->pdev->dev.kobj, &edid2_attr);
2539
2540 #if 0
2541         /* restore original state
2542          * 
2543          * Doesn't quite work yet, I suspect if we come from a legacy
2544          * VGA mode (or worse, text mode), we need to do some VGA black
2545          * magic here that I know nothing about. --BenH
2546          */
2547         radeon_write_mode (rinfo, &rinfo->init_state, 1);
2548  #endif
2549
2550         del_timer_sync(&rinfo->lvds_timer);
2551
2552 #ifdef CONFIG_MTRR
2553         if (rinfo->mtrr_hdl >= 0)
2554                 mtrr_del(rinfo->mtrr_hdl, 0, 0);
2555 #endif
2556
2557         unregister_framebuffer(info);
2558
2559         iounmap(rinfo->mmio_base);
2560         iounmap(rinfo->fb_base);
2561  
2562         pci_release_region(pdev, 2);
2563         pci_release_region(pdev, 0);
2564
2565         kfree(rinfo->mon1_EDID);
2566         kfree(rinfo->mon2_EDID);
2567         if (rinfo->mon1_modedb)
2568                 fb_destroy_modedb(rinfo->mon1_modedb);
2569 #ifdef CONFIG_FB_RADEON_I2C
2570         radeon_delete_i2c_busses(rinfo);
2571 #endif        
2572         fb_dealloc_cmap(&info->cmap);
2573         framebuffer_release(info);
2574         pci_disable_device(pdev);
2575 }
2576
2577
2578 static struct pci_driver radeonfb_driver = {
2579         .name           = "radeonfb",
2580         .id_table       = radeonfb_pci_table,
2581         .probe          = radeonfb_pci_register,
2582         .remove         = __devexit_p(radeonfb_pci_unregister),
2583 #ifdef CONFIG_PM
2584         .suspend        = radeonfb_pci_suspend,
2585         .resume         = radeonfb_pci_resume,
2586 #endif /* CONFIG_PM */
2587 };
2588
2589 #ifndef MODULE
2590 static int __init radeonfb_setup (char *options)
2591 {
2592         char *this_opt;
2593
2594         if (!options || !*options)
2595                 return 0;
2596
2597         while ((this_opt = strsep (&options, ",")) != NULL) {
2598                 if (!*this_opt)
2599                         continue;
2600
2601                 if (!strncmp(this_opt, "noaccel", 7)) {
2602                         noaccel = 1;
2603                 } else if (!strncmp(this_opt, "mirror", 6)) {
2604                         mirror = 1;
2605                 } else if (!strncmp(this_opt, "force_dfp", 9)) {
2606                         force_dfp = 1;
2607                 } else if (!strncmp(this_opt, "panel_yres:", 11)) {
2608                         panel_yres = simple_strtoul((this_opt+11), NULL, 0);
2609 #ifdef CONFIG_MTRR
2610                 } else if (!strncmp(this_opt, "nomtrr", 6)) {
2611                         nomtrr = 1;
2612 #endif
2613                 } else if (!strncmp(this_opt, "nomodeset", 9)) {
2614                         nomodeset = 1;
2615                 } else if (!strncmp(this_opt, "force_measure_pll", 17)) {
2616                         force_measure_pll = 1;
2617                 } else if (!strncmp(this_opt, "ignore_edid", 11)) {
2618                         ignore_edid = 1;
2619                 } else
2620                         mode_option = this_opt;
2621         }
2622         return 0;
2623 }
2624 #endif  /*  MODULE  */
2625
2626 static int __init radeonfb_init (void)
2627 {
2628 #ifndef MODULE
2629         char *option = NULL;
2630
2631         if (fb_get_options("radeonfb", &option))
2632                 return -ENODEV;
2633         radeonfb_setup(option);
2634 #endif
2635         return pci_register_driver (&radeonfb_driver);
2636 }
2637
2638
2639 static void __exit radeonfb_exit (void)
2640 {
2641         pci_unregister_driver (&radeonfb_driver);
2642 }
2643
2644 module_init(radeonfb_init);
2645 module_exit(radeonfb_exit);
2646
2647 MODULE_AUTHOR("Ani Joshi");
2648 MODULE_DESCRIPTION("framebuffer driver for ATI Radeon chipset");
2649 MODULE_LICENSE("GPL");
2650 module_param(noaccel, bool, 0);
2651 module_param(default_dynclk, int, 0);
2652 MODULE_PARM_DESC(default_dynclk, "int: -2=enable on mobility only,-1=do not change,0=off,1=on");
2653 MODULE_PARM_DESC(noaccel, "bool: disable acceleration");
2654 module_param(nomodeset, bool, 0);
2655 MODULE_PARM_DESC(nomodeset, "bool: disable actual setting of video mode");
2656 module_param(mirror, bool, 0);
2657 MODULE_PARM_DESC(mirror, "bool: mirror the display to both monitors");
2658 module_param(force_dfp, bool, 0);
2659 MODULE_PARM_DESC(force_dfp, "bool: force display to dfp");
2660 module_param(ignore_edid, bool, 0);
2661 MODULE_PARM_DESC(ignore_edid, "bool: Ignore EDID data when doing DDC probe");
2662 module_param(monitor_layout, charp, 0);
2663 MODULE_PARM_DESC(monitor_layout, "Specify monitor mapping (like XFree86)");
2664 module_param(force_measure_pll, bool, 0);
2665 MODULE_PARM_DESC(force_measure_pll, "Force measurement of PLL (debug)");
2666 #ifdef CONFIG_MTRR
2667 module_param(nomtrr, bool, 0);
2668 MODULE_PARM_DESC(nomtrr, "bool: disable use of MTRR registers");
2669 #endif
2670 module_param(panel_yres, int, 0);
2671 MODULE_PARM_DESC(panel_yres, "int: set panel yres");
2672 module_param(mode_option, charp, 0);
2673 MODULE_PARM_DESC(mode_option, "Specify resolution as \"<xres>x<yres>[-<bpp>][@<refresh>]\" ");