Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * drivers/video/cirrusfb.c - driver for Cirrus Logic chipsets | |
3 | * | |
4 | * Copyright 1999-2001 Jeff Garzik <jgarzik@pobox.com> | |
5 | * | |
6 | * Contributors (thanks, all!) | |
7 | * | |
8 | * David Eger: | |
9 | * Overhaul for Linux 2.6 | |
10 | * | |
11 | * Jeff Rugen: | |
12 | * Major contributions; Motorola PowerStack (PPC and PCI) support, | |
13 | * GD54xx, 1280x1024 mode support, change MCLK based on VCLK. | |
14 | * | |
15 | * Geert Uytterhoeven: | |
16 | * Excellent code review. | |
17 | * | |
18 | * Lars Hecking: | |
19 | * Amiga updates and testing. | |
20 | * | |
21 | * Original cirrusfb author: Frank Neumann | |
22 | * | |
23 | * Based on retz3fb.c and cirrusfb.c: | |
24 | * Copyright (C) 1997 Jes Sorensen | |
25 | * Copyright (C) 1996 Frank Neumann | |
26 | * | |
27 | *************************************************************** | |
28 | * | |
29 | * Format this code with GNU indent '-kr -i8 -pcs' options. | |
30 | * | |
31 | * This file is subject to the terms and conditions of the GNU General Public | |
32 | * License. See the file COPYING in the main directory of this archive | |
33 | * for more details. | |
34 | * | |
35 | */ | |
36 | ||
1da177e4 LT |
37 | #include <linux/module.h> |
38 | #include <linux/kernel.h> | |
39 | #include <linux/errno.h> | |
40 | #include <linux/string.h> | |
41 | #include <linux/mm.h> | |
1da177e4 LT |
42 | #include <linux/slab.h> |
43 | #include <linux/delay.h> | |
44 | #include <linux/fb.h> | |
45 | #include <linux/init.h> | |
1da177e4 LT |
46 | #include <asm/pgtable.h> |
47 | ||
48 | #ifdef CONFIG_ZORRO | |
49 | #include <linux/zorro.h> | |
50 | #endif | |
51 | #ifdef CONFIG_PCI | |
52 | #include <linux/pci.h> | |
53 | #endif | |
54 | #ifdef CONFIG_AMIGA | |
55 | #include <asm/amigahw.h> | |
56 | #endif | |
57 | #ifdef CONFIG_PPC_PREP | |
e8222502 | 58 | #include <asm/machdep.h> |
8503df65 | 59 | #define isPReP machine_is(prep) |
1da177e4 LT |
60 | #else |
61 | #define isPReP 0 | |
62 | #endif | |
63 | ||
0ff1edee KH |
64 | #include <video/vga.h> |
65 | #include <video/cirrus.h> | |
1da177e4 | 66 | |
1da177e4 LT |
67 | /***************************************************************** |
68 | * | |
69 | * debugging and utility macros | |
70 | * | |
71 | */ | |
72 | ||
1da177e4 LT |
73 | /* disable runtime assertions? */ |
74 | /* #define CIRRUSFB_NDEBUG */ | |
75 | ||
1da177e4 LT |
76 | /* debugging assertions */ |
77 | #ifndef CIRRUSFB_NDEBUG | |
78 | #define assert(expr) \ | |
8503df65 KH |
79 | if (!(expr)) { \ |
80 | printk("Assertion failed! %s,%s,%s,line=%d\n", \ | |
5ae12170 | 81 | #expr, __FILE__, __func__, __LINE__); \ |
8503df65 | 82 | } |
1da177e4 LT |
83 | #else |
84 | #define assert(expr) | |
85 | #endif | |
86 | ||
8503df65 | 87 | #define MB_ (1024 * 1024) |
1da177e4 | 88 | |
1da177e4 LT |
89 | /***************************************************************** |
90 | * | |
91 | * chipset information | |
92 | * | |
93 | */ | |
94 | ||
95 | /* board types */ | |
7345de32 | 96 | enum cirrus_board { |
1da177e4 | 97 | BT_NONE = 0, |
7cade31c KH |
98 | BT_SD64, /* GD5434 */ |
99 | BT_PICCOLO, /* GD5426 */ | |
100 | BT_PICASSO, /* GD5426 or GD5428 */ | |
101 | BT_SPECTRUM, /* GD5426 or GD5428 */ | |
1da177e4 LT |
102 | BT_PICASSO4, /* GD5446 */ |
103 | BT_ALPINE, /* GD543x/4x */ | |
104 | BT_GD5480, | |
78d780e0 KH |
105 | BT_LAGUNA, /* GD5462/64 */ |
106 | BT_LAGUNAB, /* GD5465 */ | |
7345de32 | 107 | }; |
1da177e4 | 108 | |
1da177e4 LT |
109 | /* |
110 | * per-board-type information, used for enumerating and abstracting | |
111 | * chip-specific information | |
7345de32 | 112 | * NOTE: MUST be in the same order as enum cirrus_board in order to |
1da177e4 LT |
113 | * use direct indexing on this array |
114 | * NOTE: '__initdata' cannot be used as some of this info | |
115 | * is required at runtime. Maybe separate into an init-only and | |
116 | * a run-time table? | |
117 | */ | |
118 | static const struct cirrusfb_board_info_rec { | |
119 | char *name; /* ASCII name of chipset */ | |
120 | long maxclock[5]; /* maximum video clock */ | |
121 | /* for 1/4bpp, 8bpp 15/16bpp, 24bpp, 32bpp - numbers from xorg code */ | |
c930faae RK |
122 | bool init_sr07 : 1; /* init SR07 during init_vgachip() */ |
123 | bool init_sr1f : 1; /* write SR1F during init_vgachip() */ | |
8503df65 KH |
124 | /* construct bit 19 of screen start address */ |
125 | bool scrn_start_bit19 : 1; | |
1da177e4 LT |
126 | |
127 | /* initial SR07 value, then for each mode */ | |
128 | unsigned char sr07; | |
129 | unsigned char sr07_1bpp; | |
130 | unsigned char sr07_1bpp_mux; | |
131 | unsigned char sr07_8bpp; | |
132 | unsigned char sr07_8bpp_mux; | |
133 | ||
134 | unsigned char sr1f; /* SR1F VGA initial register value */ | |
135 | } cirrusfb_board_info[] = { | |
136 | [BT_SD64] = { | |
137 | .name = "CL SD64", | |
138 | .maxclock = { | |
139 | /* guess */ | |
140 | /* the SD64/P4 have a higher max. videoclock */ | |
75ed3a17 | 141 | 135100, 135100, 85500, 85500, 0 |
1da177e4 | 142 | }, |
c930faae RK |
143 | .init_sr07 = true, |
144 | .init_sr1f = true, | |
145 | .scrn_start_bit19 = true, | |
1da177e4 LT |
146 | .sr07 = 0xF0, |
147 | .sr07_1bpp = 0xF0, | |
df3aafd5 | 148 | .sr07_1bpp_mux = 0xF6, |
1da177e4 | 149 | .sr07_8bpp = 0xF1, |
df3aafd5 | 150 | .sr07_8bpp_mux = 0xF7, |
8f19e15b | 151 | .sr1f = 0x1E |
1da177e4 LT |
152 | }, |
153 | [BT_PICCOLO] = { | |
154 | .name = "CL Piccolo", | |
155 | .maxclock = { | |
156 | /* guess */ | |
157 | 90000, 90000, 90000, 90000, 90000 | |
158 | }, | |
c930faae RK |
159 | .init_sr07 = true, |
160 | .init_sr1f = true, | |
161 | .scrn_start_bit19 = false, | |
1da177e4 LT |
162 | .sr07 = 0x80, |
163 | .sr07_1bpp = 0x80, | |
164 | .sr07_8bpp = 0x81, | |
165 | .sr1f = 0x22 | |
166 | }, | |
167 | [BT_PICASSO] = { | |
168 | .name = "CL Picasso", | |
169 | .maxclock = { | |
170 | /* guess */ | |
171 | 90000, 90000, 90000, 90000, 90000 | |
172 | }, | |
c930faae RK |
173 | .init_sr07 = true, |
174 | .init_sr1f = true, | |
175 | .scrn_start_bit19 = false, | |
1da177e4 LT |
176 | .sr07 = 0x20, |
177 | .sr07_1bpp = 0x20, | |
178 | .sr07_8bpp = 0x21, | |
179 | .sr1f = 0x22 | |
180 | }, | |
181 | [BT_SPECTRUM] = { | |
182 | .name = "CL Spectrum", | |
183 | .maxclock = { | |
184 | /* guess */ | |
185 | 90000, 90000, 90000, 90000, 90000 | |
186 | }, | |
c930faae RK |
187 | .init_sr07 = true, |
188 | .init_sr1f = true, | |
189 | .scrn_start_bit19 = false, | |
1da177e4 LT |
190 | .sr07 = 0x80, |
191 | .sr07_1bpp = 0x80, | |
192 | .sr07_8bpp = 0x81, | |
193 | .sr1f = 0x22 | |
194 | }, | |
195 | [BT_PICASSO4] = { | |
196 | .name = "CL Picasso4", | |
197 | .maxclock = { | |
198 | 135100, 135100, 85500, 85500, 0 | |
199 | }, | |
c930faae RK |
200 | .init_sr07 = true, |
201 | .init_sr1f = false, | |
202 | .scrn_start_bit19 = true, | |
527410ff KH |
203 | .sr07 = 0xA0, |
204 | .sr07_1bpp = 0xA0, | |
205 | .sr07_1bpp_mux = 0xA6, | |
206 | .sr07_8bpp = 0xA1, | |
207 | .sr07_8bpp_mux = 0xA7, | |
1da177e4 LT |
208 | .sr1f = 0 |
209 | }, | |
210 | [BT_ALPINE] = { | |
211 | .name = "CL Alpine", | |
212 | .maxclock = { | |
213 | /* for the GD5430. GD5446 can do more... */ | |
214 | 85500, 85500, 50000, 28500, 0 | |
215 | }, | |
c930faae RK |
216 | .init_sr07 = true, |
217 | .init_sr1f = true, | |
218 | .scrn_start_bit19 = true, | |
1da177e4 | 219 | .sr07 = 0xA0, |
527410ff KH |
220 | .sr07_1bpp = 0xA0, |
221 | .sr07_1bpp_mux = 0xA6, | |
1da177e4 LT |
222 | .sr07_8bpp = 0xA1, |
223 | .sr07_8bpp_mux = 0xA7, | |
224 | .sr1f = 0x1C | |
225 | }, | |
226 | [BT_GD5480] = { | |
227 | .name = "CL GD5480", | |
228 | .maxclock = { | |
229 | 135100, 200000, 200000, 135100, 135100 | |
230 | }, | |
c930faae RK |
231 | .init_sr07 = true, |
232 | .init_sr1f = true, | |
233 | .scrn_start_bit19 = true, | |
1da177e4 LT |
234 | .sr07 = 0x10, |
235 | .sr07_1bpp = 0x11, | |
236 | .sr07_8bpp = 0x11, | |
237 | .sr1f = 0x1C | |
238 | }, | |
239 | [BT_LAGUNA] = { | |
240 | .name = "CL Laguna", | |
241 | .maxclock = { | |
78d780e0 KH |
242 | /* taken from X11 code */ |
243 | 170000, 170000, 170000, 170000, 135100, | |
244 | }, | |
245 | .init_sr07 = false, | |
246 | .init_sr1f = false, | |
247 | .scrn_start_bit19 = true, | |
248 | }, | |
249 | [BT_LAGUNAB] = { | |
250 | .name = "CL Laguna AGP", | |
251 | .maxclock = { | |
252 | /* taken from X11 code */ | |
253 | 170000, 250000, 170000, 170000, 135100, | |
1da177e4 | 254 | }, |
c930faae RK |
255 | .init_sr07 = false, |
256 | .init_sr1f = false, | |
257 | .scrn_start_bit19 = true, | |
1da177e4 LT |
258 | } |
259 | }; | |
260 | ||
1da177e4 LT |
261 | #ifdef CONFIG_PCI |
262 | #define CHIP(id, btype) \ | |
4153812f | 263 | { PCI_VENDOR_ID_CIRRUS, id, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (btype) } |
1da177e4 LT |
264 | |
265 | static struct pci_device_id cirrusfb_pci_table[] = { | |
8503df65 | 266 | CHIP(PCI_DEVICE_ID_CIRRUS_5436, BT_ALPINE), |
df3aafd5 KH |
267 | CHIP(PCI_DEVICE_ID_CIRRUS_5434_8, BT_SD64), |
268 | CHIP(PCI_DEVICE_ID_CIRRUS_5434_4, BT_SD64), | |
8503df65 KH |
269 | CHIP(PCI_DEVICE_ID_CIRRUS_5430, BT_ALPINE), /* GD-5440 is same id */ |
270 | CHIP(PCI_DEVICE_ID_CIRRUS_7543, BT_ALPINE), | |
271 | CHIP(PCI_DEVICE_ID_CIRRUS_7548, BT_ALPINE), | |
272 | CHIP(PCI_DEVICE_ID_CIRRUS_5480, BT_GD5480), /* MacPicasso likely */ | |
273 | CHIP(PCI_DEVICE_ID_CIRRUS_5446, BT_PICASSO4), /* Picasso 4 is 5446 */ | |
274 | CHIP(PCI_DEVICE_ID_CIRRUS_5462, BT_LAGUNA), /* CL Laguna */ | |
275 | CHIP(PCI_DEVICE_ID_CIRRUS_5464, BT_LAGUNA), /* CL Laguna 3D */ | |
78d780e0 | 276 | CHIP(PCI_DEVICE_ID_CIRRUS_5465, BT_LAGUNAB), /* CL Laguna 3DA*/ |
1da177e4 LT |
277 | { 0, } |
278 | }; | |
279 | MODULE_DEVICE_TABLE(pci, cirrusfb_pci_table); | |
280 | #undef CHIP | |
281 | #endif /* CONFIG_PCI */ | |
282 | ||
1da177e4 LT |
283 | #ifdef CONFIG_ZORRO |
284 | static const struct zorro_device_id cirrusfb_zorro_table[] = { | |
285 | { | |
286 | .id = ZORRO_PROD_HELFRICH_SD64_RAM, | |
287 | .driver_data = BT_SD64, | |
288 | }, { | |
289 | .id = ZORRO_PROD_HELFRICH_PICCOLO_RAM, | |
290 | .driver_data = BT_PICCOLO, | |
291 | }, { | |
8503df65 | 292 | .id = ZORRO_PROD_VILLAGE_TRONIC_PICASSO_II_II_PLUS_RAM, |
1da177e4 LT |
293 | .driver_data = BT_PICASSO, |
294 | }, { | |
295 | .id = ZORRO_PROD_GVP_EGS_28_24_SPECTRUM_RAM, | |
296 | .driver_data = BT_SPECTRUM, | |
297 | }, { | |
298 | .id = ZORRO_PROD_VILLAGE_TRONIC_PICASSO_IV_Z3, | |
299 | .driver_data = BT_PICASSO4, | |
300 | }, | |
301 | { 0 } | |
302 | }; | |
303 | ||
304 | static const struct { | |
305 | zorro_id id2; | |
306 | unsigned long size; | |
307 | } cirrusfb_zorro_table2[] = { | |
308 | [BT_SD64] = { | |
309 | .id2 = ZORRO_PROD_HELFRICH_SD64_REG, | |
310 | .size = 0x400000 | |
311 | }, | |
312 | [BT_PICCOLO] = { | |
313 | .id2 = ZORRO_PROD_HELFRICH_PICCOLO_REG, | |
314 | .size = 0x200000 | |
315 | }, | |
316 | [BT_PICASSO] = { | |
317 | .id2 = ZORRO_PROD_VILLAGE_TRONIC_PICASSO_II_II_PLUS_REG, | |
318 | .size = 0x200000 | |
319 | }, | |
320 | [BT_SPECTRUM] = { | |
321 | .id2 = ZORRO_PROD_GVP_EGS_28_24_SPECTRUM_REG, | |
322 | .size = 0x200000 | |
323 | }, | |
324 | [BT_PICASSO4] = { | |
325 | .id2 = 0, | |
326 | .size = 0x400000 | |
327 | } | |
328 | }; | |
329 | #endif /* CONFIG_ZORRO */ | |
330 | ||
1da177e4 | 331 | #ifdef CIRRUSFB_DEBUG |
7345de32 | 332 | enum cirrusfb_dbg_reg_class { |
8503df65 KH |
333 | CRT, |
334 | SEQ | |
7345de32 | 335 | }; |
8503df65 | 336 | #endif /* CIRRUSFB_DEBUG */ |
1da177e4 LT |
337 | |
338 | /* info about board */ | |
339 | struct cirrusfb_info { | |
1da177e4 | 340 | u8 __iomem *regbase; |
6e30fc08 | 341 | u8 __iomem *laguna_mmio; |
7345de32 | 342 | enum cirrus_board btype; |
1da177e4 LT |
343 | unsigned char SFR; /* Shadow of special function register */ |
344 | ||
48c329e9 | 345 | int multiplexing; |
df3aafd5 | 346 | int doubleVCLK; |
1da177e4 | 347 | int blank_mode; |
64beab14 | 348 | u32 pseudo_palette[16]; |
1da177e4 | 349 | |
9199ec5c | 350 | void (*unmap)(struct fb_info *info); |
1da177e4 LT |
351 | }; |
352 | ||
55a0dd83 | 353 | static int noaccel __devinitdata; |
a1d35a7a | 354 | static char *mode_option __devinitdata = "640x480@60"; |
1da177e4 LT |
355 | |
356 | /****************************************************************************/ | |
357 | /**** BEGIN PROTOTYPES ******************************************************/ | |
358 | ||
1da177e4 | 359 | /*--- Interface used by the world ------------------------------------------*/ |
8503df65 KH |
360 | static int cirrusfb_pan_display(struct fb_var_screeninfo *var, |
361 | struct fb_info *info); | |
1da177e4 | 362 | |
1da177e4 | 363 | /*--- Internal routines ----------------------------------------------------*/ |
9199ec5c | 364 | static void init_vgachip(struct fb_info *info); |
8503df65 KH |
365 | static void switch_monitor(struct cirrusfb_info *cinfo, int on); |
366 | static void WGen(const struct cirrusfb_info *cinfo, | |
367 | int regnum, unsigned char val); | |
368 | static unsigned char RGen(const struct cirrusfb_info *cinfo, int regnum); | |
369 | static void AttrOn(const struct cirrusfb_info *cinfo); | |
370 | static void WHDR(const struct cirrusfb_info *cinfo, unsigned char val); | |
371 | static void WSFR(struct cirrusfb_info *cinfo, unsigned char val); | |
372 | static void WSFR2(struct cirrusfb_info *cinfo, unsigned char val); | |
373 | static void WClut(struct cirrusfb_info *cinfo, unsigned char regnum, | |
374 | unsigned char red, unsigned char green, unsigned char blue); | |
1da177e4 | 375 | #if 0 |
8503df65 KH |
376 | static void RClut(struct cirrusfb_info *cinfo, unsigned char regnum, |
377 | unsigned char *red, unsigned char *green, | |
378 | unsigned char *blue); | |
1da177e4 | 379 | #endif |
8503df65 KH |
380 | static void cirrusfb_WaitBLT(u8 __iomem *regbase); |
381 | static void cirrusfb_BitBLT(u8 __iomem *regbase, int bits_per_pixel, | |
382 | u_short curx, u_short cury, | |
383 | u_short destx, u_short desty, | |
384 | u_short width, u_short height, | |
385 | u_short line_length); | |
386 | static void cirrusfb_RectFill(u8 __iomem *regbase, int bits_per_pixel, | |
387 | u_short x, u_short y, | |
388 | u_short width, u_short height, | |
9e848062 KH |
389 | u32 fg_color, u32 bg_color, |
390 | u_short line_length, u_char blitmode); | |
8503df65 | 391 | |
dafa32c5 | 392 | static void bestclock(long freq, int *nom, int *den, int *div); |
1da177e4 LT |
393 | |
394 | #ifdef CIRRUSFB_DEBUG | |
75ed3a17 KH |
395 | static void cirrusfb_dbg_reg_dump(struct fb_info *info, caddr_t regbase); |
396 | static void cirrusfb_dbg_print_regs(struct fb_info *info, | |
397 | caddr_t regbase, | |
7345de32 | 398 | enum cirrusfb_dbg_reg_class reg_class, ...); |
1da177e4 LT |
399 | #endif /* CIRRUSFB_DEBUG */ |
400 | ||
401 | /*** END PROTOTYPES ********************************************************/ | |
402 | /*****************************************************************************/ | |
403 | /*** BEGIN Interface Used by the World ***************************************/ | |
404 | ||
78d780e0 KH |
405 | static inline int is_laguna(const struct cirrusfb_info *cinfo) |
406 | { | |
407 | return cinfo->btype == BT_LAGUNA || cinfo->btype == BT_LAGUNAB; | |
408 | } | |
409 | ||
8503df65 | 410 | static int opencount; |
1da177e4 LT |
411 | |
412 | /*--- Open /dev/fbx ---------------------------------------------------------*/ | |
8503df65 | 413 | static int cirrusfb_open(struct fb_info *info, int user) |
1da177e4 LT |
414 | { |
415 | if (opencount++ == 0) | |
8503df65 | 416 | switch_monitor(info->par, 1); |
1da177e4 LT |
417 | return 0; |
418 | } | |
419 | ||
420 | /*--- Close /dev/fbx --------------------------------------------------------*/ | |
8503df65 | 421 | static int cirrusfb_release(struct fb_info *info, int user) |
1da177e4 LT |
422 | { |
423 | if (--opencount == 0) | |
8503df65 | 424 | switch_monitor(info->par, 0); |
1da177e4 LT |
425 | return 0; |
426 | } | |
427 | ||
428 | /**** END Interface used by the World *************************************/ | |
429 | /****************************************************************************/ | |
430 | /**** BEGIN Hardware specific Routines **************************************/ | |
431 | ||
486ff387 | 432 | /* Check if the MCLK is not a better clock source */ |
75ed3a17 | 433 | static int cirrusfb_check_mclk(struct fb_info *info, long freq) |
1da177e4 | 434 | { |
75ed3a17 | 435 | struct cirrusfb_info *cinfo = info->par; |
486ff387 | 436 | long mclk = vga_rseq(cinfo->regbase, CL_SEQR1F) & 0x3f; |
1da177e4 | 437 | |
486ff387 KH |
438 | /* Read MCLK value */ |
439 | mclk = (14318 * mclk) >> 3; | |
75ed3a17 | 440 | dev_dbg(info->device, "Read MCLK of %ld kHz\n", mclk); |
1da177e4 LT |
441 | |
442 | /* Determine if we should use MCLK instead of VCLK, and if so, what we | |
486ff387 KH |
443 | * should divide it by to get VCLK |
444 | */ | |
445 | ||
446 | if (abs(freq - mclk) < 250) { | |
75ed3a17 | 447 | dev_dbg(info->device, "Using VCLK = MCLK\n"); |
486ff387 KH |
448 | return 1; |
449 | } else if (abs(freq - (mclk / 2)) < 250) { | |
75ed3a17 | 450 | dev_dbg(info->device, "Using VCLK = MCLK/2\n"); |
486ff387 | 451 | return 2; |
1da177e4 LT |
452 | } |
453 | ||
486ff387 | 454 | return 0; |
1da177e4 LT |
455 | } |
456 | ||
99a45847 KH |
457 | static int cirrusfb_check_pixclock(const struct fb_var_screeninfo *var, |
458 | struct fb_info *info) | |
459 | { | |
460 | long freq; | |
461 | long maxclock; | |
462 | struct cirrusfb_info *cinfo = info->par; | |
463 | unsigned maxclockidx = var->bits_per_pixel >> 3; | |
464 | ||
465 | /* convert from ps to kHz */ | |
466 | freq = PICOS2KHZ(var->pixclock); | |
467 | ||
468 | dev_dbg(info->device, "desired pixclock: %ld kHz\n", freq); | |
469 | ||
470 | maxclock = cirrusfb_board_info[cinfo->btype].maxclock[maxclockidx]; | |
471 | cinfo->multiplexing = 0; | |
472 | ||
473 | /* If the frequency is greater than we can support, we might be able | |
474 | * to use multiplexing for the video mode */ | |
475 | if (freq > maxclock) { | |
dd14f71c KH |
476 | dev_err(info->device, |
477 | "Frequency greater than maxclock (%ld kHz)\n", | |
478 | maxclock); | |
479 | return -EINVAL; | |
480 | } | |
481 | /* | |
482 | * Additional constraint: 8bpp uses DAC clock doubling to allow maximum | |
483 | * pixel clock | |
484 | */ | |
485 | if (var->bits_per_pixel == 8) { | |
99a45847 KH |
486 | switch (cinfo->btype) { |
487 | case BT_ALPINE: | |
8f19e15b | 488 | case BT_SD64: |
dd14f71c KH |
489 | case BT_PICASSO4: |
490 | if (freq > 85500) | |
491 | cinfo->multiplexing = 1; | |
492 | break; | |
99a45847 | 493 | case BT_GD5480: |
dd14f71c KH |
494 | if (freq > 135100) |
495 | cinfo->multiplexing = 1; | |
99a45847 KH |
496 | break; |
497 | ||
498 | default: | |
8f19e15b | 499 | break; |
99a45847 KH |
500 | } |
501 | } | |
df3aafd5 KH |
502 | |
503 | /* If we have a 1MB 5434, we need to put ourselves in a mode where | |
99a45847 | 504 | * the VCLK is double the pixel clock. */ |
df3aafd5 KH |
505 | cinfo->doubleVCLK = 0; |
506 | if (cinfo->btype == BT_SD64 && info->fix.smem_len <= MB_ && | |
507 | var->bits_per_pixel == 16) { | |
508 | cinfo->doubleVCLK = 1; | |
99a45847 | 509 | } |
df3aafd5 | 510 | |
99a45847 KH |
511 | return 0; |
512 | } | |
513 | ||
1da177e4 LT |
514 | static int cirrusfb_check_var(struct fb_var_screeninfo *var, |
515 | struct fb_info *info) | |
516 | { | |
09a2910e KH |
517 | int yres; |
518 | /* memory size in pixels */ | |
519 | unsigned pixels = info->screen_size * 8 / var->bits_per_pixel; | |
614c0dc9 | 520 | struct cirrusfb_info *cinfo = info->par; |
1da177e4 | 521 | |
1da177e4 LT |
522 | switch (var->bits_per_pixel) { |
523 | case 1: | |
524 | var->red.offset = 0; | |
525 | var->red.length = 1; | |
060b6002 KH |
526 | var->green = var->red; |
527 | var->blue = var->red; | |
1da177e4 LT |
528 | break; |
529 | ||
530 | case 8: | |
531 | var->red.offset = 0; | |
99a45847 | 532 | var->red.length = 8; |
060b6002 KH |
533 | var->green = var->red; |
534 | var->blue = var->red; | |
1da177e4 LT |
535 | break; |
536 | ||
537 | case 16: | |
8503df65 | 538 | if (isPReP) { |
1da177e4 LT |
539 | var->red.offset = 2; |
540 | var->green.offset = -3; | |
541 | var->blue.offset = 8; | |
542 | } else { | |
c4dec396 | 543 | var->red.offset = 11; |
1da177e4 LT |
544 | var->green.offset = 5; |
545 | var->blue.offset = 0; | |
546 | } | |
547 | var->red.length = 5; | |
c4dec396 | 548 | var->green.length = 6; |
1da177e4 LT |
549 | var->blue.length = 5; |
550 | break; | |
551 | ||
7cade31c | 552 | case 24: |
8503df65 | 553 | if (isPReP) { |
7cade31c KH |
554 | var->red.offset = 0; |
555 | var->green.offset = 8; | |
556 | var->blue.offset = 16; | |
1da177e4 LT |
557 | } else { |
558 | var->red.offset = 16; | |
559 | var->green.offset = 8; | |
560 | var->blue.offset = 0; | |
561 | } | |
562 | var->red.length = 8; | |
563 | var->green.length = 8; | |
564 | var->blue.length = 8; | |
565 | break; | |
566 | ||
567 | default: | |
75ed3a17 KH |
568 | dev_dbg(info->device, |
569 | "Unsupported bpp size: %d\n", var->bits_per_pixel); | |
c930faae | 570 | assert(false); |
1da177e4 LT |
571 | /* should never occur */ |
572 | break; | |
573 | } | |
574 | ||
75ed3a17 KH |
575 | if (var->xres_virtual < var->xres) |
576 | var->xres_virtual = var->xres; | |
577 | /* use highest possible virtual resolution */ | |
578 | if (var->yres_virtual == -1) { | |
579 | var->yres_virtual = pixels / var->xres_virtual; | |
580 | ||
581 | dev_info(info->device, | |
582 | "virtual resolution set to maximum of %dx%d\n", | |
583 | var->xres_virtual, var->yres_virtual); | |
584 | } | |
585 | if (var->yres_virtual < var->yres) | |
586 | var->yres_virtual = var->yres; | |
587 | ||
588 | if (var->xres_virtual * var->yres_virtual > pixels) { | |
589 | dev_err(info->device, "mode %dx%dx%d rejected... " | |
590 | "virtual resolution too high to fit into video memory!\n", | |
591 | var->xres_virtual, var->yres_virtual, | |
592 | var->bits_per_pixel); | |
593 | return -EINVAL; | |
594 | } | |
595 | ||
75ed3a17 KH |
596 | if (var->xoffset < 0) |
597 | var->xoffset = 0; | |
598 | if (var->yoffset < 0) | |
599 | var->yoffset = 0; | |
600 | ||
601 | /* truncate xoffset and yoffset to maximum if too high */ | |
602 | if (var->xoffset > var->xres_virtual - var->xres) | |
603 | var->xoffset = var->xres_virtual - var->xres - 1; | |
604 | if (var->yoffset > var->yres_virtual - var->yres) | |
605 | var->yoffset = var->yres_virtual - var->yres - 1; | |
606 | ||
1da177e4 LT |
607 | var->red.msb_right = |
608 | var->green.msb_right = | |
609 | var->blue.msb_right = | |
610 | var->transp.offset = | |
611 | var->transp.length = | |
612 | var->transp.msb_right = 0; | |
613 | ||
614 | yres = var->yres; | |
615 | if (var->vmode & FB_VMODE_DOUBLE) | |
616 | yres *= 2; | |
617 | else if (var->vmode & FB_VMODE_INTERLACED) | |
618 | yres = (yres + 1) / 2; | |
619 | ||
620 | if (yres >= 1280) { | |
75ed3a17 | 621 | dev_err(info->device, "ERROR: VerticalTotal >= 1280; " |
8503df65 | 622 | "special treatment required! (TODO)\n"); |
1da177e4 LT |
623 | return -EINVAL; |
624 | } | |
625 | ||
99a45847 KH |
626 | if (cirrusfb_check_pixclock(var, info)) |
627 | return -EINVAL; | |
1da177e4 | 628 | |
614c0dc9 KH |
629 | if (!is_laguna(cinfo)) |
630 | var->accel_flags = FB_ACCELF_TEXT; | |
631 | ||
1da177e4 LT |
632 | return 0; |
633 | } | |
634 | ||
75ed3a17 | 635 | static void cirrusfb_set_mclk_as_source(const struct fb_info *info, int div) |
1da177e4 | 636 | { |
75ed3a17 | 637 | struct cirrusfb_info *cinfo = info->par; |
486ff387 | 638 | unsigned char old1f, old1e; |
75ed3a17 | 639 | |
8503df65 | 640 | assert(cinfo != NULL); |
486ff387 KH |
641 | old1f = vga_rseq(cinfo->regbase, CL_SEQR1F) & ~0x40; |
642 | ||
643 | if (div) { | |
75ed3a17 KH |
644 | dev_dbg(info->device, "Set %s as pixclock source.\n", |
645 | (div == 2) ? "MCLK/2" : "MCLK"); | |
486ff387 KH |
646 | old1f |= 0x40; |
647 | old1e = vga_rseq(cinfo->regbase, CL_SEQR1E) & ~0x1; | |
648 | if (div == 2) | |
649 | old1e |= 1; | |
1da177e4 | 650 | |
486ff387 | 651 | vga_wseq(cinfo->regbase, CL_SEQR1E, old1e); |
1da177e4 | 652 | } |
486ff387 | 653 | vga_wseq(cinfo->regbase, CL_SEQR1F, old1f); |
1da177e4 LT |
654 | } |
655 | ||
656 | /************************************************************************* | |
657 | cirrusfb_set_par_foo() | |
658 | ||
659 | actually writes the values for a new video mode into the hardware, | |
660 | **************************************************************************/ | |
8503df65 | 661 | static int cirrusfb_set_par_foo(struct fb_info *info) |
1da177e4 LT |
662 | { |
663 | struct cirrusfb_info *cinfo = info->par; | |
664 | struct fb_var_screeninfo *var = &info->var; | |
1da177e4 LT |
665 | u8 __iomem *regbase = cinfo->regbase; |
666 | unsigned char tmp; | |
6683e01e | 667 | int pitch; |
1da177e4 | 668 | const struct cirrusfb_board_info_rec *bi; |
9a85cf51 KH |
669 | int hdispend, hsyncstart, hsyncend, htotal; |
670 | int yres, vdispend, vsyncstart, vsyncend, vtotal; | |
dafa32c5 KH |
671 | long freq; |
672 | int nom, den, div; | |
1b48cb56 | 673 | unsigned int control = 0, format = 0, threshold = 0; |
1da177e4 | 674 | |
75ed3a17 | 675 | dev_dbg(info->device, "Requested mode: %dx%dx%d\n", |
1da177e4 | 676 | var->xres, var->yres, var->bits_per_pixel); |
1da177e4 | 677 | |
99a45847 KH |
678 | switch (var->bits_per_pixel) { |
679 | case 1: | |
680 | info->fix.line_length = var->xres_virtual / 8; | |
681 | info->fix.visual = FB_VISUAL_MONO10; | |
682 | break; | |
1da177e4 | 683 | |
99a45847 KH |
684 | case 8: |
685 | info->fix.line_length = var->xres_virtual; | |
686 | info->fix.visual = FB_VISUAL_PSEUDOCOLOR; | |
687 | break; | |
688 | ||
689 | case 16: | |
7cade31c | 690 | case 24: |
99a45847 KH |
691 | info->fix.line_length = var->xres_virtual * |
692 | var->bits_per_pixel >> 3; | |
693 | info->fix.visual = FB_VISUAL_TRUECOLOR; | |
694 | break; | |
1da177e4 | 695 | } |
99a45847 KH |
696 | info->fix.type = FB_TYPE_PACKED_PIXELS; |
697 | ||
698 | init_vgachip(info); | |
1da177e4 LT |
699 | |
700 | bi = &cirrusfb_board_info[cinfo->btype]; | |
701 | ||
9a85cf51 KH |
702 | hsyncstart = var->xres + var->right_margin; |
703 | hsyncend = hsyncstart + var->hsync_len; | |
8636a924 KH |
704 | htotal = (hsyncend + var->left_margin) / 8; |
705 | hdispend = var->xres / 8; | |
706 | hsyncstart = hsyncstart / 8; | |
707 | hsyncend = hsyncend / 8; | |
9a85cf51 | 708 | |
8636a924 KH |
709 | vdispend = var->yres; |
710 | vsyncstart = vdispend + var->lower_margin; | |
9a85cf51 KH |
711 | vsyncend = vsyncstart + var->vsync_len; |
712 | vtotal = vsyncend + var->upper_margin; | |
9a85cf51 KH |
713 | |
714 | if (var->vmode & FB_VMODE_DOUBLE) { | |
8636a924 | 715 | vdispend *= 2; |
9a85cf51 KH |
716 | vsyncstart *= 2; |
717 | vsyncend *= 2; | |
718 | vtotal *= 2; | |
719 | } else if (var->vmode & FB_VMODE_INTERLACED) { | |
8636a924 | 720 | vdispend = (vdispend + 1) / 2; |
9a85cf51 KH |
721 | vsyncstart = (vsyncstart + 1) / 2; |
722 | vsyncend = (vsyncend + 1) / 2; | |
723 | vtotal = (vtotal + 1) / 2; | |
724 | } | |
8636a924 | 725 | yres = vdispend; |
9a85cf51 KH |
726 | if (yres >= 1024) { |
727 | vtotal /= 2; | |
728 | vsyncstart /= 2; | |
729 | vsyncend /= 2; | |
730 | vdispend /= 2; | |
731 | } | |
8636a924 KH |
732 | |
733 | vdispend -= 1; | |
734 | vsyncstart -= 1; | |
735 | vsyncend -= 1; | |
736 | vtotal -= 2; | |
737 | ||
48c329e9 | 738 | if (cinfo->multiplexing) { |
9a85cf51 KH |
739 | htotal /= 2; |
740 | hsyncstart /= 2; | |
741 | hsyncend /= 2; | |
742 | hdispend /= 2; | |
743 | } | |
8636a924 KH |
744 | |
745 | htotal -= 5; | |
746 | hdispend -= 1; | |
747 | hsyncstart += 1; | |
748 | hsyncend += 1; | |
749 | ||
1da177e4 | 750 | /* unlock register VGA_CRTC_H_TOTAL..CRT7 */ |
8503df65 | 751 | vga_wcrt(regbase, VGA_CRTC_V_SYNC_END, 0x20); /* previously: 0x00) */ |
1da177e4 LT |
752 | |
753 | /* if debugging is enabled, all parameters get output before writing */ | |
75ed3a17 | 754 | dev_dbg(info->device, "CRT0: %d\n", htotal); |
9a85cf51 | 755 | vga_wcrt(regbase, VGA_CRTC_H_TOTAL, htotal); |
1da177e4 | 756 | |
75ed3a17 | 757 | dev_dbg(info->device, "CRT1: %d\n", hdispend); |
9a85cf51 | 758 | vga_wcrt(regbase, VGA_CRTC_H_DISP, hdispend); |
1da177e4 | 759 | |
75ed3a17 | 760 | dev_dbg(info->device, "CRT2: %d\n", var->xres / 8); |
9a85cf51 | 761 | vga_wcrt(regbase, VGA_CRTC_H_BLANK_START, var->xres / 8); |
1da177e4 | 762 | |
8503df65 | 763 | /* + 128: Compatible read */ |
75ed3a17 | 764 | dev_dbg(info->device, "CRT3: 128+%d\n", (htotal + 5) % 32); |
8503df65 | 765 | vga_wcrt(regbase, VGA_CRTC_H_BLANK_END, |
9a85cf51 | 766 | 128 + ((htotal + 5) % 32)); |
1da177e4 | 767 | |
75ed3a17 | 768 | dev_dbg(info->device, "CRT4: %d\n", hsyncstart); |
9a85cf51 | 769 | vga_wcrt(regbase, VGA_CRTC_H_SYNC_START, hsyncstart); |
1da177e4 | 770 | |
9a85cf51 KH |
771 | tmp = hsyncend % 32; |
772 | if ((htotal + 5) & 32) | |
1da177e4 | 773 | tmp += 128; |
75ed3a17 | 774 | dev_dbg(info->device, "CRT5: %d\n", tmp); |
8503df65 | 775 | vga_wcrt(regbase, VGA_CRTC_H_SYNC_END, tmp); |
1da177e4 | 776 | |
75ed3a17 | 777 | dev_dbg(info->device, "CRT6: %d\n", vtotal & 0xff); |
9a85cf51 | 778 | vga_wcrt(regbase, VGA_CRTC_V_TOTAL, vtotal & 0xff); |
1da177e4 LT |
779 | |
780 | tmp = 16; /* LineCompare bit #9 */ | |
9a85cf51 | 781 | if (vtotal & 256) |
1da177e4 | 782 | tmp |= 1; |
9a85cf51 | 783 | if (vdispend & 256) |
1da177e4 | 784 | tmp |= 2; |
9a85cf51 | 785 | if (vsyncstart & 256) |
1da177e4 | 786 | tmp |= 4; |
9a85cf51 | 787 | if ((vdispend + 1) & 256) |
1da177e4 | 788 | tmp |= 8; |
9a85cf51 | 789 | if (vtotal & 512) |
1da177e4 | 790 | tmp |= 32; |
9a85cf51 | 791 | if (vdispend & 512) |
1da177e4 | 792 | tmp |= 64; |
9a85cf51 | 793 | if (vsyncstart & 512) |
1da177e4 | 794 | tmp |= 128; |
75ed3a17 | 795 | dev_dbg(info->device, "CRT7: %d\n", tmp); |
8503df65 | 796 | vga_wcrt(regbase, VGA_CRTC_OVERFLOW, tmp); |
1da177e4 LT |
797 | |
798 | tmp = 0x40; /* LineCompare bit #8 */ | |
9a85cf51 | 799 | if ((vdispend + 1) & 512) |
1da177e4 LT |
800 | tmp |= 0x20; |
801 | if (var->vmode & FB_VMODE_DOUBLE) | |
802 | tmp |= 0x80; | |
75ed3a17 | 803 | dev_dbg(info->device, "CRT9: %d\n", tmp); |
8503df65 | 804 | vga_wcrt(regbase, VGA_CRTC_MAX_SCAN, tmp); |
1da177e4 | 805 | |
75ed3a17 | 806 | dev_dbg(info->device, "CRT10: %d\n", vsyncstart & 0xff); |
9a85cf51 | 807 | vga_wcrt(regbase, VGA_CRTC_V_SYNC_START, vsyncstart & 0xff); |
1da177e4 | 808 | |
75ed3a17 | 809 | dev_dbg(info->device, "CRT11: 64+32+%d\n", vsyncend % 16); |
9a85cf51 | 810 | vga_wcrt(regbase, VGA_CRTC_V_SYNC_END, vsyncend % 16 + 64 + 32); |
1da177e4 | 811 | |
75ed3a17 | 812 | dev_dbg(info->device, "CRT12: %d\n", vdispend & 0xff); |
9a85cf51 | 813 | vga_wcrt(regbase, VGA_CRTC_V_DISP_END, vdispend & 0xff); |
1da177e4 | 814 | |
75ed3a17 | 815 | dev_dbg(info->device, "CRT15: %d\n", (vdispend + 1) & 0xff); |
9a85cf51 | 816 | vga_wcrt(regbase, VGA_CRTC_V_BLANK_START, (vdispend + 1) & 0xff); |
1da177e4 | 817 | |
75ed3a17 | 818 | dev_dbg(info->device, "CRT16: %d\n", vtotal & 0xff); |
9a85cf51 | 819 | vga_wcrt(regbase, VGA_CRTC_V_BLANK_END, vtotal & 0xff); |
1da177e4 | 820 | |
75ed3a17 | 821 | dev_dbg(info->device, "CRT18: 0xff\n"); |
8503df65 | 822 | vga_wcrt(regbase, VGA_CRTC_LINE_COMPARE, 0xff); |
1da177e4 LT |
823 | |
824 | tmp = 0; | |
825 | if (var->vmode & FB_VMODE_INTERLACED) | |
826 | tmp |= 1; | |
9a85cf51 | 827 | if ((htotal + 5) & 64) |
1da177e4 | 828 | tmp |= 16; |
9a85cf51 | 829 | if ((htotal + 5) & 128) |
1da177e4 | 830 | tmp |= 32; |
9a85cf51 | 831 | if (vtotal & 256) |
1da177e4 | 832 | tmp |= 64; |
9a85cf51 | 833 | if (vtotal & 512) |
1da177e4 LT |
834 | tmp |= 128; |
835 | ||
75ed3a17 | 836 | dev_dbg(info->device, "CRT1a: %d\n", tmp); |
8503df65 | 837 | vga_wcrt(regbase, CL_CRT1A, tmp); |
1da177e4 | 838 | |
dafa32c5 | 839 | freq = PICOS2KHZ(var->pixclock); |
df3aafd5 KH |
840 | if (var->bits_per_pixel == 24) |
841 | if (cinfo->btype == BT_ALPINE || cinfo->btype == BT_SD64) | |
842 | freq *= 3; | |
dd14f71c KH |
843 | if (cinfo->multiplexing) |
844 | freq /= 2; | |
df3aafd5 KH |
845 | if (cinfo->doubleVCLK) |
846 | freq *= 2; | |
7cade31c | 847 | |
dafa32c5 KH |
848 | bestclock(freq, &nom, &den, &div); |
849 | ||
75ed3a17 KH |
850 | dev_dbg(info->device, "VCLK freq: %ld kHz nom: %d den: %d div: %d\n", |
851 | freq, nom, den, div); | |
852 | ||
1da177e4 LT |
853 | /* set VCLK0 */ |
854 | /* hardware RefClock: 14.31818 MHz */ | |
855 | /* formula: VClk = (OSC * N) / (D * (1+P)) */ | |
856 | /* Example: VClk = (14.31818 * 91) / (23 * (1+1)) = 28.325 MHz */ | |
857 | ||
8f19e15b KH |
858 | if (cinfo->btype == BT_ALPINE || cinfo->btype == BT_PICASSO4 || |
859 | cinfo->btype == BT_SD64) { | |
486ff387 KH |
860 | /* if freq is close to mclk or mclk/2 select mclk |
861 | * as clock source | |
862 | */ | |
75ed3a17 | 863 | int divMCLK = cirrusfb_check_mclk(info, freq); |
df3aafd5 | 864 | if (divMCLK) |
486ff387 | 865 | nom = 0; |
df3aafd5 | 866 | cirrusfb_set_mclk_as_source(info, divMCLK); |
486ff387 | 867 | } |
78d780e0 | 868 | if (is_laguna(cinfo)) { |
6e30fc08 KH |
869 | long pcifc = fb_readl(cinfo->laguna_mmio + 0x3fc); |
870 | unsigned char tile = fb_readb(cinfo->laguna_mmio + 0x407); | |
871 | unsigned short tile_control; | |
872 | ||
78d780e0 KH |
873 | if (cinfo->btype == BT_LAGUNAB) { |
874 | tile_control = fb_readw(cinfo->laguna_mmio + 0x2c4); | |
875 | tile_control &= ~0x80; | |
876 | fb_writew(tile_control, cinfo->laguna_mmio + 0x2c4); | |
877 | } | |
6e30fc08 KH |
878 | |
879 | fb_writel(pcifc | 0x10000000l, cinfo->laguna_mmio + 0x3fc); | |
880 | fb_writeb(tile & 0x3f, cinfo->laguna_mmio + 0x407); | |
881 | control = fb_readw(cinfo->laguna_mmio + 0x402); | |
882 | threshold = fb_readw(cinfo->laguna_mmio + 0xea); | |
883 | control &= ~0x6800; | |
884 | format = 0; | |
4242a23c | 885 | threshold &= 0xffc0 & 0x3fbf; |
6e30fc08 | 886 | } |
486ff387 | 887 | if (nom) { |
486ff387 KH |
888 | tmp = den << 1; |
889 | if (div != 0) | |
890 | tmp |= 1; | |
486ff387 KH |
891 | /* 6 bit denom; ONLY 5434!!! (bugged me 10 days) */ |
892 | if ((cinfo->btype == BT_SD64) || | |
893 | (cinfo->btype == BT_ALPINE) || | |
894 | (cinfo->btype == BT_GD5480)) | |
895 | tmp |= 0x80; | |
896 | ||
55a4ea6a | 897 | /* Laguna chipset has reversed clock registers */ |
78d780e0 | 898 | if (is_laguna(cinfo)) { |
55a4ea6a KH |
899 | vga_wseq(regbase, CL_SEQRE, tmp); |
900 | vga_wseq(regbase, CL_SEQR1E, nom); | |
901 | } else { | |
df3aafd5 KH |
902 | vga_wseq(regbase, CL_SEQRE, nom); |
903 | vga_wseq(regbase, CL_SEQR1E, tmp); | |
55a4ea6a | 904 | } |
486ff387 | 905 | } |
1da177e4 | 906 | |
9a85cf51 | 907 | if (yres >= 1024) |
1da177e4 | 908 | /* 1280x1024 */ |
8503df65 | 909 | vga_wcrt(regbase, VGA_CRTC_MODE, 0xc7); |
1da177e4 LT |
910 | else |
911 | /* mode control: VGA_CRTC_START_HI enable, ROTATE(?), 16bit | |
912 | * address wrap, no compat. */ | |
8503df65 | 913 | vga_wcrt(regbase, VGA_CRTC_MODE, 0xc3); |
1da177e4 | 914 | |
1da177e4 LT |
915 | /* don't know if it would hurt to also program this if no interlaced */ |
916 | /* mode is used, but I feel better this way.. :-) */ | |
917 | if (var->vmode & FB_VMODE_INTERLACED) | |
9a85cf51 | 918 | vga_wcrt(regbase, VGA_CRTC_REGS, htotal / 2); |
1da177e4 | 919 | else |
8503df65 | 920 | vga_wcrt(regbase, VGA_CRTC_REGS, 0x00); /* interlace control */ |
1da177e4 | 921 | |
df3aafd5 | 922 | /* adjust horizontal/vertical sync type (low/high), use VCLK3 */ |
8503df65 | 923 | /* enable display memory & CRTC I/O address for color mode */ |
df3aafd5 | 924 | tmp = 0x03 | 0xc; |
1da177e4 LT |
925 | if (var->sync & FB_SYNC_HOR_HIGH_ACT) |
926 | tmp |= 0x40; | |
927 | if (var->sync & FB_SYNC_VERT_HIGH_ACT) | |
928 | tmp |= 0x80; | |
8503df65 | 929 | WGen(cinfo, VGA_MIS_W, tmp); |
1da177e4 | 930 | |
8503df65 KH |
931 | /* text cursor on and start line */ |
932 | vga_wcrt(regbase, VGA_CRTC_CURSOR_START, 0); | |
933 | /* text cursor end line */ | |
934 | vga_wcrt(regbase, VGA_CRTC_CURSOR_END, 31); | |
1da177e4 LT |
935 | |
936 | /****************************************************** | |
937 | * | |
938 | * 1 bpp | |
939 | * | |
940 | */ | |
941 | ||
942 | /* programming for different color depths */ | |
943 | if (var->bits_per_pixel == 1) { | |
75ed3a17 | 944 | dev_dbg(info->device, "preparing for 1 bit deep display\n"); |
8503df65 | 945 | vga_wgfx(regbase, VGA_GFX_MODE, 0); /* mode register */ |
1da177e4 LT |
946 | |
947 | /* SR07 */ | |
948 | switch (cinfo->btype) { | |
949 | case BT_SD64: | |
950 | case BT_PICCOLO: | |
951 | case BT_PICASSO: | |
952 | case BT_SPECTRUM: | |
953 | case BT_PICASSO4: | |
954 | case BT_ALPINE: | |
955 | case BT_GD5480: | |
8503df65 | 956 | vga_wseq(regbase, CL_SEQR7, |
48c329e9 | 957 | cinfo->multiplexing ? |
1da177e4 LT |
958 | bi->sr07_1bpp_mux : bi->sr07_1bpp); |
959 | break; | |
960 | ||
961 | case BT_LAGUNA: | |
78d780e0 | 962 | case BT_LAGUNAB: |
8503df65 KH |
963 | vga_wseq(regbase, CL_SEQR7, |
964 | vga_rseq(regbase, CL_SEQR7) & ~0x01); | |
1da177e4 LT |
965 | break; |
966 | ||
967 | default: | |
75ed3a17 | 968 | dev_warn(info->device, "unknown Board\n"); |
1da177e4 LT |
969 | break; |
970 | } | |
971 | ||
972 | /* Extended Sequencer Mode */ | |
973 | switch (cinfo->btype) { | |
1da177e4 LT |
974 | |
975 | case BT_PICCOLO: | |
060b6002 | 976 | case BT_SPECTRUM: |
8503df65 KH |
977 | /* evtl d0 bei 1 bit? avoid FIFO underruns..? */ |
978 | vga_wseq(regbase, CL_SEQRF, 0xb0); | |
1da177e4 LT |
979 | break; |
980 | ||
981 | case BT_PICASSO: | |
8503df65 KH |
982 | /* ## vorher d0 avoid FIFO underruns..? */ |
983 | vga_wseq(regbase, CL_SEQRF, 0xd0); | |
1da177e4 LT |
984 | break; |
985 | ||
8f19e15b | 986 | case BT_SD64: |
1da177e4 LT |
987 | case BT_PICASSO4: |
988 | case BT_ALPINE: | |
989 | case BT_GD5480: | |
990 | case BT_LAGUNA: | |
78d780e0 | 991 | case BT_LAGUNAB: |
1da177e4 LT |
992 | /* do nothing */ |
993 | break; | |
994 | ||
995 | default: | |
75ed3a17 | 996 | dev_warn(info->device, "unknown Board\n"); |
1da177e4 LT |
997 | break; |
998 | } | |
999 | ||
8503df65 KH |
1000 | /* pixel mask: pass-through for first plane */ |
1001 | WGen(cinfo, VGA_PEL_MSK, 0x01); | |
48c329e9 | 1002 | if (cinfo->multiplexing) |
8503df65 KH |
1003 | /* hidden dac reg: 1280x1024 */ |
1004 | WHDR(cinfo, 0x4a); | |
1da177e4 | 1005 | else |
8503df65 KH |
1006 | /* hidden dac: nothing */ |
1007 | WHDR(cinfo, 0); | |
1008 | /* memory mode: odd/even, ext. memory */ | |
1009 | vga_wseq(regbase, VGA_SEQ_MEMORY_MODE, 0x06); | |
1010 | /* plane mask: only write to first plane */ | |
1011 | vga_wseq(regbase, VGA_SEQ_PLANE_WRITE, 0x01); | |
1da177e4 LT |
1012 | } |
1013 | ||
1014 | /****************************************************** | |
1015 | * | |
1016 | * 8 bpp | |
1017 | * | |
1018 | */ | |
1019 | ||
1020 | else if (var->bits_per_pixel == 8) { | |
75ed3a17 | 1021 | dev_dbg(info->device, "preparing for 8 bit deep display\n"); |
1da177e4 LT |
1022 | switch (cinfo->btype) { |
1023 | case BT_SD64: | |
1024 | case BT_PICCOLO: | |
1025 | case BT_PICASSO: | |
1026 | case BT_SPECTRUM: | |
1027 | case BT_PICASSO4: | |
1028 | case BT_ALPINE: | |
1029 | case BT_GD5480: | |
8503df65 | 1030 | vga_wseq(regbase, CL_SEQR7, |
48c329e9 | 1031 | cinfo->multiplexing ? |
1da177e4 LT |
1032 | bi->sr07_8bpp_mux : bi->sr07_8bpp); |
1033 | break; | |
1034 | ||
1035 | case BT_LAGUNA: | |
78d780e0 | 1036 | case BT_LAGUNAB: |
8503df65 KH |
1037 | vga_wseq(regbase, CL_SEQR7, |
1038 | vga_rseq(regbase, CL_SEQR7) | 0x01); | |
6e30fc08 | 1039 | threshold |= 0x10; |
1da177e4 LT |
1040 | break; |
1041 | ||
1042 | default: | |
75ed3a17 | 1043 | dev_warn(info->device, "unknown Board\n"); |
1da177e4 LT |
1044 | break; |
1045 | } | |
1046 | ||
1047 | switch (cinfo->btype) { | |
1da177e4 | 1048 | case BT_PICCOLO: |
1da177e4 | 1049 | case BT_PICASSO: |
1da177e4 | 1050 | case BT_SPECTRUM: |
8503df65 KH |
1051 | /* Fast Page-Mode writes */ |
1052 | vga_wseq(regbase, CL_SEQRF, 0xb0); | |
1da177e4 LT |
1053 | break; |
1054 | ||
1055 | case BT_PICASSO4: | |
1056 | #ifdef CONFIG_ZORRO | |
8503df65 KH |
1057 | /* ### INCOMPLETE!! */ |
1058 | vga_wseq(regbase, CL_SEQRF, 0xb8); | |
1da177e4 | 1059 | #endif |
1da177e4 | 1060 | case BT_ALPINE: |
8f19e15b | 1061 | case BT_SD64: |
1da177e4 LT |
1062 | case BT_GD5480: |
1063 | case BT_LAGUNA: | |
78d780e0 | 1064 | case BT_LAGUNAB: |
1da177e4 LT |
1065 | /* do nothing */ |
1066 | break; | |
1067 | ||
1068 | default: | |
75ed3a17 | 1069 | dev_warn(info->device, "unknown board\n"); |
1da177e4 LT |
1070 | break; |
1071 | } | |
1072 | ||
8503df65 KH |
1073 | /* mode register: 256 color mode */ |
1074 | vga_wgfx(regbase, VGA_GFX_MODE, 64); | |
48c329e9 | 1075 | if (cinfo->multiplexing) |
8503df65 KH |
1076 | /* hidden dac reg: 1280x1024 */ |
1077 | WHDR(cinfo, 0x4a); | |
1da177e4 | 1078 | else |
8503df65 KH |
1079 | /* hidden dac: nothing */ |
1080 | WHDR(cinfo, 0); | |
1da177e4 LT |
1081 | } |
1082 | ||
1083 | /****************************************************** | |
1084 | * | |
1085 | * 16 bpp | |
1086 | * | |
1087 | */ | |
1088 | ||
1089 | else if (var->bits_per_pixel == 16) { | |
75ed3a17 | 1090 | dev_dbg(info->device, "preparing for 16 bit deep display\n"); |
1da177e4 | 1091 | switch (cinfo->btype) { |
1da177e4 | 1092 | case BT_PICCOLO: |
060b6002 | 1093 | case BT_SPECTRUM: |
8503df65 KH |
1094 | vga_wseq(regbase, CL_SEQR7, 0x87); |
1095 | /* Fast Page-Mode writes */ | |
1096 | vga_wseq(regbase, CL_SEQRF, 0xb0); | |
1da177e4 LT |
1097 | break; |
1098 | ||
1099 | case BT_PICASSO: | |
8503df65 KH |
1100 | vga_wseq(regbase, CL_SEQR7, 0x27); |
1101 | /* Fast Page-Mode writes */ | |
1102 | vga_wseq(regbase, CL_SEQRF, 0xb0); | |
1da177e4 LT |
1103 | break; |
1104 | ||
8f19e15b | 1105 | case BT_SD64: |
1da177e4 | 1106 | case BT_PICASSO4: |
1da177e4 | 1107 | case BT_ALPINE: |
8f19e15b | 1108 | /* Extended Sequencer Mode: 256c col. mode */ |
df3aafd5 KH |
1109 | vga_wseq(regbase, CL_SEQR7, |
1110 | cinfo->doubleVCLK ? 0xa3 : 0xa7); | |
1da177e4 LT |
1111 | break; |
1112 | ||
1113 | case BT_GD5480: | |
8503df65 | 1114 | vga_wseq(regbase, CL_SEQR7, 0x17); |
1da177e4 LT |
1115 | /* We already set SRF and SR1F */ |
1116 | break; | |
1117 | ||
1118 | case BT_LAGUNA: | |
78d780e0 | 1119 | case BT_LAGUNAB: |
8503df65 KH |
1120 | vga_wseq(regbase, CL_SEQR7, |
1121 | vga_rseq(regbase, CL_SEQR7) & ~0x01); | |
6e30fc08 KH |
1122 | control |= 0x2000; |
1123 | format |= 0x1400; | |
1124 | threshold |= 0x10; | |
1da177e4 LT |
1125 | break; |
1126 | ||
1127 | default: | |
75ed3a17 | 1128 | dev_warn(info->device, "unknown Board\n"); |
1da177e4 LT |
1129 | break; |
1130 | } | |
1131 | ||
8503df65 KH |
1132 | /* mode register: 256 color mode */ |
1133 | vga_wgfx(regbase, VGA_GFX_MODE, 64); | |
1da177e4 | 1134 | #ifdef CONFIG_PCI |
df3aafd5 | 1135 | WHDR(cinfo, cinfo->doubleVCLK ? 0xe1 : 0xc1); |
1da177e4 LT |
1136 | #elif defined(CONFIG_ZORRO) |
1137 | /* FIXME: CONFIG_PCI and CONFIG_ZORRO may be defined both */ | |
8503df65 | 1138 | WHDR(cinfo, 0xa0); /* hidden dac reg: nothing special */ |
1da177e4 | 1139 | #endif |
1da177e4 LT |
1140 | } |
1141 | ||
1142 | /****************************************************** | |
1143 | * | |
7cade31c | 1144 | * 24 bpp |
1da177e4 LT |
1145 | * |
1146 | */ | |
1147 | ||
7cade31c KH |
1148 | else if (var->bits_per_pixel == 24) { |
1149 | dev_dbg(info->device, "preparing for 24 bit deep display\n"); | |
1da177e4 | 1150 | switch (cinfo->btype) { |
1da177e4 | 1151 | case BT_PICCOLO: |
060b6002 | 1152 | case BT_SPECTRUM: |
8503df65 KH |
1153 | vga_wseq(regbase, CL_SEQR7, 0x85); |
1154 | /* Fast Page-Mode writes */ | |
1155 | vga_wseq(regbase, CL_SEQRF, 0xb0); | |
1da177e4 LT |
1156 | break; |
1157 | ||
1158 | case BT_PICASSO: | |
8503df65 KH |
1159 | vga_wseq(regbase, CL_SEQR7, 0x25); |
1160 | /* Fast Page-Mode writes */ | |
1161 | vga_wseq(regbase, CL_SEQRF, 0xb0); | |
1da177e4 LT |
1162 | break; |
1163 | ||
8f19e15b | 1164 | case BT_SD64: |
1da177e4 | 1165 | case BT_PICASSO4: |
1da177e4 | 1166 | case BT_ALPINE: |
8f19e15b | 1167 | /* Extended Sequencer Mode: 256c col. mode */ |
7cade31c | 1168 | vga_wseq(regbase, CL_SEQR7, 0xa5); |
1da177e4 LT |
1169 | break; |
1170 | ||
1171 | case BT_GD5480: | |
7cade31c | 1172 | vga_wseq(regbase, CL_SEQR7, 0x15); |
1da177e4 LT |
1173 | /* We already set SRF and SR1F */ |
1174 | break; | |
1175 | ||
1176 | case BT_LAGUNA: | |
78d780e0 | 1177 | case BT_LAGUNAB: |
8503df65 KH |
1178 | vga_wseq(regbase, CL_SEQR7, |
1179 | vga_rseq(regbase, CL_SEQR7) & ~0x01); | |
7cade31c KH |
1180 | control |= 0x4000; |
1181 | format |= 0x2400; | |
6e30fc08 | 1182 | threshold |= 0x20; |
1da177e4 LT |
1183 | break; |
1184 | ||
1185 | default: | |
75ed3a17 | 1186 | dev_warn(info->device, "unknown Board\n"); |
1da177e4 LT |
1187 | break; |
1188 | } | |
1189 | ||
8503df65 KH |
1190 | /* mode register: 256 color mode */ |
1191 | vga_wgfx(regbase, VGA_GFX_MODE, 64); | |
8503df65 KH |
1192 | /* hidden dac reg: 8-8-8 mode (24 or 32) */ |
1193 | WHDR(cinfo, 0xc5); | |
1da177e4 LT |
1194 | } |
1195 | ||
1196 | /****************************************************** | |
1197 | * | |
1198 | * unknown/unsupported bpp | |
1199 | * | |
1200 | */ | |
1201 | ||
8503df65 | 1202 | else |
75ed3a17 KH |
1203 | dev_err(info->device, |
1204 | "What's this? requested color depth == %d.\n", | |
1da177e4 | 1205 | var->bits_per_pixel); |
1da177e4 | 1206 | |
6683e01e KH |
1207 | pitch = info->fix.line_length >> 3; |
1208 | vga_wcrt(regbase, VGA_CRTC_OFFSET, pitch & 0xff); | |
1da177e4 | 1209 | tmp = 0x22; |
6683e01e | 1210 | if (pitch & 0x100) |
1da177e4 LT |
1211 | tmp |= 0x10; /* offset overflow bit */ |
1212 | ||
8503df65 KH |
1213 | /* screen start addr #16-18, fastpagemode cycles */ |
1214 | vga_wcrt(regbase, CL_CRT1B, tmp); | |
1da177e4 | 1215 | |
213d4bdd KH |
1216 | /* screen start address bit 19 */ |
1217 | if (cirrusfb_board_info[cinfo->btype].scrn_start_bit19) | |
6683e01e | 1218 | vga_wcrt(regbase, CL_CRT1D, (pitch >> 9) & 1); |
8503df65 | 1219 | |
78d780e0 | 1220 | if (is_laguna(cinfo)) { |
213d4bdd KH |
1221 | tmp = 0; |
1222 | if ((htotal + 5) & 256) | |
1223 | tmp |= 128; | |
1224 | if (hdispend & 256) | |
1225 | tmp |= 64; | |
1226 | if (hsyncstart & 256) | |
1227 | tmp |= 48; | |
1228 | if (vtotal & 1024) | |
1229 | tmp |= 8; | |
1230 | if (vdispend & 1024) | |
1231 | tmp |= 4; | |
1232 | if (vsyncstart & 1024) | |
1233 | tmp |= 3; | |
1234 | ||
1235 | vga_wcrt(regbase, CL_CRT1E, tmp); | |
1236 | dev_dbg(info->device, "CRT1e: %d\n", tmp); | |
1237 | } | |
1238 | ||
8503df65 KH |
1239 | /* pixel panning */ |
1240 | vga_wattr(regbase, CL_AR33, 0); | |
1da177e4 LT |
1241 | |
1242 | /* [ EGS: SetOffset(); ] */ | |
1243 | /* From SetOffset(): Turn on VideoEnable bit in Attribute controller */ | |
8503df65 KH |
1244 | AttrOn(cinfo); |
1245 | ||
78d780e0 | 1246 | if (is_laguna(cinfo)) { |
6e30fc08 KH |
1247 | /* no tiles */ |
1248 | fb_writew(control | 0x1000, cinfo->laguna_mmio + 0x402); | |
1249 | fb_writew(format, cinfo->laguna_mmio + 0xc0); | |
1250 | fb_writew(threshold, cinfo->laguna_mmio + 0xea); | |
1251 | } | |
1da177e4 LT |
1252 | /* finally, turn on everything - turn off "FullBandwidth" bit */ |
1253 | /* also, set "DotClock%2" bit where requested */ | |
1254 | tmp = 0x01; | |
1255 | ||
1256 | /*** FB_VMODE_CLOCK_HALVE in linux/fb.h not defined anymore ? | |
1257 | if (var->vmode & FB_VMODE_CLOCK_HALVE) | |
1258 | tmp |= 0x08; | |
1259 | */ | |
1260 | ||
8503df65 | 1261 | vga_wseq(regbase, VGA_SEQ_CLOCK_MODE, tmp); |
75ed3a17 | 1262 | dev_dbg(info->device, "CL_SEQR1: %d\n", tmp); |
1da177e4 | 1263 | |
1da177e4 | 1264 | #ifdef CIRRUSFB_DEBUG |
75ed3a17 | 1265 | cirrusfb_dbg_reg_dump(info, NULL); |
1da177e4 LT |
1266 | #endif |
1267 | ||
1da177e4 LT |
1268 | return 0; |
1269 | } | |
1270 | ||
1271 | /* for some reason incomprehensible to me, cirrusfb requires that you write | |
1272 | * the registers twice for the settings to take..grr. -dte */ | |
8503df65 | 1273 | static int cirrusfb_set_par(struct fb_info *info) |
1da177e4 | 1274 | { |
8503df65 KH |
1275 | cirrusfb_set_par_foo(info); |
1276 | return cirrusfb_set_par_foo(info); | |
1da177e4 LT |
1277 | } |
1278 | ||
8503df65 KH |
1279 | static int cirrusfb_setcolreg(unsigned regno, unsigned red, unsigned green, |
1280 | unsigned blue, unsigned transp, | |
1281 | struct fb_info *info) | |
1da177e4 LT |
1282 | { |
1283 | struct cirrusfb_info *cinfo = info->par; | |
1284 | ||
1285 | if (regno > 255) | |
1286 | return -EINVAL; | |
1287 | ||
1288 | if (info->fix.visual == FB_VISUAL_TRUECOLOR) { | |
1289 | u32 v; | |
1290 | red >>= (16 - info->var.red.length); | |
1291 | green >>= (16 - info->var.green.length); | |
1292 | blue >>= (16 - info->var.blue.length); | |
1293 | ||
8503df65 | 1294 | if (regno >= 16) |
1da177e4 LT |
1295 | return 1; |
1296 | v = (red << info->var.red.offset) | | |
1297 | (green << info->var.green.offset) | | |
1298 | (blue << info->var.blue.offset); | |
1299 | ||
060b6002 | 1300 | cinfo->pseudo_palette[regno] = v; |
1da177e4 LT |
1301 | return 0; |
1302 | } | |
1303 | ||
8503df65 KH |
1304 | if (info->var.bits_per_pixel == 8) |
1305 | WClut(cinfo, regno, red >> 10, green >> 10, blue >> 10); | |
1da177e4 LT |
1306 | |
1307 | return 0; | |
1308 | ||
1309 | } | |
1310 | ||
1311 | /************************************************************************* | |
1312 | cirrusfb_pan_display() | |
1313 | ||
1314 | performs display panning - provided hardware permits this | |
1315 | **************************************************************************/ | |
8503df65 KH |
1316 | static int cirrusfb_pan_display(struct fb_var_screeninfo *var, |
1317 | struct fb_info *info) | |
1da177e4 | 1318 | { |
99a45847 | 1319 | int xoffset; |
1da177e4 | 1320 | unsigned long base; |
213d4bdd | 1321 | unsigned char tmp, xpix; |
1da177e4 LT |
1322 | struct cirrusfb_info *cinfo = info->par; |
1323 | ||
1da177e4 LT |
1324 | /* no range checks for xoffset and yoffset, */ |
1325 | /* as fb_pan_display has already done this */ | |
1326 | if (var->vmode & FB_VMODE_YWRAP) | |
1327 | return -EINVAL; | |
1328 | ||
1da177e4 | 1329 | xoffset = var->xoffset * info->var.bits_per_pixel / 8; |
1da177e4 | 1330 | |
99a45847 | 1331 | base = var->yoffset * info->fix.line_length + xoffset; |
1da177e4 LT |
1332 | |
1333 | if (info->var.bits_per_pixel == 1) { | |
1334 | /* base is already correct */ | |
1335 | xpix = (unsigned char) (var->xoffset % 8); | |
1336 | } else { | |
1337 | base /= 4; | |
1338 | xpix = (unsigned char) ((xoffset % 4) * 2); | |
1339 | } | |
1340 | ||
78d780e0 | 1341 | if (!is_laguna(cinfo)) |
1b48cb56 | 1342 | cirrusfb_WaitBLT(cinfo->regbase); |
1da177e4 LT |
1343 | |
1344 | /* lower 8 + 8 bits of screen start address */ | |
99a45847 KH |
1345 | vga_wcrt(cinfo->regbase, VGA_CRTC_START_LO, base & 0xff); |
1346 | vga_wcrt(cinfo->regbase, VGA_CRTC_START_HI, (base >> 8) & 0xff); | |
1da177e4 | 1347 | |
213d4bdd KH |
1348 | /* 0xf2 is %11110010, exclude tmp bits */ |
1349 | tmp = vga_rcrt(cinfo->regbase, CL_CRT1B) & 0xf2; | |
1da177e4 LT |
1350 | /* construct bits 16, 17 and 18 of screen start address */ |
1351 | if (base & 0x10000) | |
1352 | tmp |= 0x01; | |
1353 | if (base & 0x20000) | |
1354 | tmp |= 0x04; | |
1355 | if (base & 0x40000) | |
1356 | tmp |= 0x08; | |
1357 | ||
213d4bdd | 1358 | vga_wcrt(cinfo->regbase, CL_CRT1B, tmp); |
1da177e4 LT |
1359 | |
1360 | /* construct bit 19 of screen start address */ | |
48c329e9 | 1361 | if (cirrusfb_board_info[cinfo->btype].scrn_start_bit19) { |
78d780e0 KH |
1362 | tmp = vga_rcrt(cinfo->regbase, CL_CRT1D); |
1363 | if (is_laguna(cinfo)) | |
1364 | tmp = (tmp & ~0x18) | ((base >> 16) & 0x18); | |
1365 | else | |
1366 | tmp = (tmp & ~0x80) | ((base >> 12) & 0x80); | |
48c329e9 KH |
1367 | vga_wcrt(cinfo->regbase, CL_CRT1D, tmp); |
1368 | } | |
1da177e4 | 1369 | |
8503df65 KH |
1370 | /* write pixel panning value to AR33; this does not quite work in 8bpp |
1371 | * | |
1372 | * ### Piccolo..? Will this work? | |
1373 | */ | |
1da177e4 | 1374 | if (info->var.bits_per_pixel == 1) |
8503df65 | 1375 | vga_wattr(cinfo->regbase, CL_AR33, xpix); |
1da177e4 | 1376 | |
8503df65 | 1377 | return 0; |
1da177e4 LT |
1378 | } |
1379 | ||
8503df65 | 1380 | static int cirrusfb_blank(int blank_mode, struct fb_info *info) |
1da177e4 LT |
1381 | { |
1382 | /* | |
8503df65 KH |
1383 | * Blank the screen if blank_mode != 0, else unblank. If blank == NULL |
1384 | * then the caller blanks by setting the CLUT (Color Look Up Table) | |
1385 | * to all black. Return 0 if blanking succeeded, != 0 if un-/blanking | |
1386 | * failed due to e.g. a video mode which doesn't support it. | |
1387 | * Implements VESA suspend and powerdown modes on hardware that | |
1388 | * supports disabling hsync/vsync: | |
1389 | * blank_mode == 2: suspend vsync | |
1390 | * blank_mode == 3: suspend hsync | |
1391 | * blank_mode == 4: powerdown | |
1da177e4 LT |
1392 | */ |
1393 | unsigned char val; | |
1394 | struct cirrusfb_info *cinfo = info->par; | |
1395 | int current_mode = cinfo->blank_mode; | |
1396 | ||
75ed3a17 | 1397 | dev_dbg(info->device, "ENTER, blank mode = %d\n", blank_mode); |
1da177e4 LT |
1398 | |
1399 | if (info->state != FBINFO_STATE_RUNNING || | |
1400 | current_mode == blank_mode) { | |
75ed3a17 | 1401 | dev_dbg(info->device, "EXIT, returning 0\n"); |
1da177e4 LT |
1402 | return 0; |
1403 | } | |
1404 | ||
1405 | /* Undo current */ | |
1406 | if (current_mode == FB_BLANK_NORMAL || | |
213d4bdd | 1407 | current_mode == FB_BLANK_UNBLANK) |
8503df65 | 1408 | /* clear "FullBandwidth" bit */ |
213d4bdd KH |
1409 | val = 0; |
1410 | else | |
8503df65 | 1411 | /* set "FullBandwidth" bit */ |
213d4bdd KH |
1412 | val = 0x20; |
1413 | ||
1414 | val |= vga_rseq(cinfo->regbase, VGA_SEQ_CLOCK_MODE) & 0xdf; | |
1415 | vga_wseq(cinfo->regbase, VGA_SEQ_CLOCK_MODE, val); | |
1da177e4 LT |
1416 | |
1417 | switch (blank_mode) { | |
1418 | case FB_BLANK_UNBLANK: | |
1419 | case FB_BLANK_NORMAL: | |
213d4bdd | 1420 | val = 0x00; |
1da177e4 LT |
1421 | break; |
1422 | case FB_BLANK_VSYNC_SUSPEND: | |
213d4bdd | 1423 | val = 0x04; |
1da177e4 LT |
1424 | break; |
1425 | case FB_BLANK_HSYNC_SUSPEND: | |
213d4bdd | 1426 | val = 0x02; |
1da177e4 LT |
1427 | break; |
1428 | case FB_BLANK_POWERDOWN: | |
213d4bdd | 1429 | val = 0x06; |
1da177e4 LT |
1430 | break; |
1431 | default: | |
75ed3a17 | 1432 | dev_dbg(info->device, "EXIT, returning 1\n"); |
1da177e4 LT |
1433 | return 1; |
1434 | } | |
1435 | ||
213d4bdd KH |
1436 | vga_wgfx(cinfo->regbase, CL_GRE, val); |
1437 | ||
1da177e4 | 1438 | cinfo->blank_mode = blank_mode; |
75ed3a17 | 1439 | dev_dbg(info->device, "EXIT, returning 0\n"); |
1da177e4 LT |
1440 | |
1441 | /* Let fbcon do a soft blank for us */ | |
1442 | return (blank_mode == FB_BLANK_NORMAL) ? 1 : 0; | |
1443 | } | |
213d4bdd | 1444 | |
1da177e4 LT |
1445 | /**** END Hardware specific Routines **************************************/ |
1446 | /****************************************************************************/ | |
1447 | /**** BEGIN Internal Routines ***********************************************/ | |
1448 | ||
9199ec5c | 1449 | static void init_vgachip(struct fb_info *info) |
1da177e4 | 1450 | { |
9199ec5c | 1451 | struct cirrusfb_info *cinfo = info->par; |
1da177e4 LT |
1452 | const struct cirrusfb_board_info_rec *bi; |
1453 | ||
8503df65 | 1454 | assert(cinfo != NULL); |
1da177e4 LT |
1455 | |
1456 | bi = &cirrusfb_board_info[cinfo->btype]; | |
1457 | ||
1458 | /* reset board globally */ | |
1459 | switch (cinfo->btype) { | |
1460 | case BT_PICCOLO: | |
8503df65 KH |
1461 | WSFR(cinfo, 0x01); |
1462 | udelay(500); | |
1463 | WSFR(cinfo, 0x51); | |
1464 | udelay(500); | |
1da177e4 LT |
1465 | break; |
1466 | case BT_PICASSO: | |
8503df65 KH |
1467 | WSFR2(cinfo, 0xff); |
1468 | udelay(500); | |
1da177e4 LT |
1469 | break; |
1470 | case BT_SD64: | |
1471 | case BT_SPECTRUM: | |
8503df65 KH |
1472 | WSFR(cinfo, 0x1f); |
1473 | udelay(500); | |
1474 | WSFR(cinfo, 0x4f); | |
1475 | udelay(500); | |
1da177e4 LT |
1476 | break; |
1477 | case BT_PICASSO4: | |
8503df65 KH |
1478 | /* disable flickerfixer */ |
1479 | vga_wcrt(cinfo->regbase, CL_CRT51, 0x00); | |
1480 | mdelay(100); | |
8503df65 KH |
1481 | /* mode */ |
1482 | vga_wgfx(cinfo->regbase, CL_GR31, 0x00); | |
7cade31c | 1483 | case BT_GD5480: /* fall through */ |
8503df65 KH |
1484 | /* from Klaus' NetBSD driver: */ |
1485 | vga_wgfx(cinfo->regbase, CL_GR2F, 0x00); | |
7cade31c KH |
1486 | case BT_ALPINE: /* fall through */ |
1487 | /* put blitter into 542x compat */ | |
1488 | vga_wgfx(cinfo->regbase, CL_GR33, 0x00); | |
1da177e4 LT |
1489 | break; |
1490 | ||
1b48cb56 | 1491 | case BT_LAGUNA: |
78d780e0 | 1492 | case BT_LAGUNAB: |
1da177e4 LT |
1493 | /* Nothing to do to reset the board. */ |
1494 | break; | |
1495 | ||
1496 | default: | |
75ed3a17 | 1497 | dev_err(info->device, "Warning: Unknown board type\n"); |
1da177e4 LT |
1498 | break; |
1499 | } | |
1500 | ||
9199ec5c KH |
1501 | /* make sure RAM size set by this point */ |
1502 | assert(info->screen_size > 0); | |
1da177e4 LT |
1503 | |
1504 | /* the P4 is not fully initialized here; I rely on it having been */ | |
1505 | /* inited under AmigaOS already, which seems to work just fine */ | |
8503df65 | 1506 | /* (Klaus advised to do it this way) */ |
1da177e4 LT |
1507 | |
1508 | if (cinfo->btype != BT_PICASSO4) { | |
8503df65 KH |
1509 | WGen(cinfo, CL_VSSM, 0x10); /* EGS: 0x16 */ |
1510 | WGen(cinfo, CL_POS102, 0x01); | |
1511 | WGen(cinfo, CL_VSSM, 0x08); /* EGS: 0x0e */ | |
1da177e4 LT |
1512 | |
1513 | if (cinfo->btype != BT_SD64) | |
8503df65 | 1514 | WGen(cinfo, CL_VSSM2, 0x01); |
1da177e4 | 1515 | |
8503df65 | 1516 | /* reset sequencer logic */ |
1b48cb56 | 1517 | vga_wseq(cinfo->regbase, VGA_SEQ_RESET, 0x03); |
1da177e4 | 1518 | |
8503df65 KH |
1519 | /* FullBandwidth (video off) and 8/9 dot clock */ |
1520 | vga_wseq(cinfo->regbase, VGA_SEQ_CLOCK_MODE, 0x21); | |
1da177e4 | 1521 | |
8503df65 KH |
1522 | /* "magic cookie" - doesn't make any sense to me.. */ |
1523 | /* vga_wgfx(cinfo->regbase, CL_GRA, 0xce); */ | |
1524 | /* unlock all extension registers */ | |
1525 | vga_wseq(cinfo->regbase, CL_SEQR6, 0x12); | |
1da177e4 | 1526 | |
1da177e4 LT |
1527 | switch (cinfo->btype) { |
1528 | case BT_GD5480: | |
8503df65 | 1529 | vga_wseq(cinfo->regbase, CL_SEQRF, 0x98); |
1da177e4 LT |
1530 | break; |
1531 | case BT_ALPINE: | |
1b48cb56 | 1532 | case BT_LAGUNA: |
78d780e0 | 1533 | case BT_LAGUNAB: |
1da177e4 LT |
1534 | break; |
1535 | case BT_SD64: | |
df3aafd5 | 1536 | #ifdef CONFIG_ZORRO |
8503df65 | 1537 | vga_wseq(cinfo->regbase, CL_SEQRF, 0xb8); |
df3aafd5 | 1538 | #endif |
1da177e4 LT |
1539 | break; |
1540 | default: | |
8503df65 KH |
1541 | vga_wseq(cinfo->regbase, CL_SEQR16, 0x0f); |
1542 | vga_wseq(cinfo->regbase, CL_SEQRF, 0xb0); | |
1da177e4 LT |
1543 | break; |
1544 | } | |
1545 | } | |
8503df65 KH |
1546 | /* plane mask: nothing */ |
1547 | vga_wseq(cinfo->regbase, VGA_SEQ_PLANE_WRITE, 0xff); | |
1548 | /* character map select: doesn't even matter in gx mode */ | |
1549 | vga_wseq(cinfo->regbase, VGA_SEQ_CHARACTER_MAP, 0x00); | |
48c329e9 KH |
1550 | /* memory mode: chain4, ext. memory */ |
1551 | vga_wseq(cinfo->regbase, VGA_SEQ_MEMORY_MODE, 0x0a); | |
1da177e4 LT |
1552 | |
1553 | /* controller-internal base address of video memory */ | |
1554 | if (bi->init_sr07) | |
8503df65 | 1555 | vga_wseq(cinfo->regbase, CL_SEQR7, bi->sr07); |
1da177e4 | 1556 | |
8503df65 KH |
1557 | /* vga_wseq(cinfo->regbase, CL_SEQR8, 0x00); */ |
1558 | /* EEPROM control: shouldn't be necessary to write to this at all.. */ | |
1da177e4 | 1559 | |
8503df65 KH |
1560 | /* graphics cursor X position (incomplete; position gives rem. 3 bits */ |
1561 | vga_wseq(cinfo->regbase, CL_SEQR10, 0x00); | |
1562 | /* graphics cursor Y position (..."... ) */ | |
1563 | vga_wseq(cinfo->regbase, CL_SEQR11, 0x00); | |
1564 | /* graphics cursor attributes */ | |
1565 | vga_wseq(cinfo->regbase, CL_SEQR12, 0x00); | |
1566 | /* graphics cursor pattern address */ | |
1567 | vga_wseq(cinfo->regbase, CL_SEQR13, 0x00); | |
1da177e4 LT |
1568 | |
1569 | /* writing these on a P4 might give problems.. */ | |
1570 | if (cinfo->btype != BT_PICASSO4) { | |
8503df65 KH |
1571 | /* configuration readback and ext. color */ |
1572 | vga_wseq(cinfo->regbase, CL_SEQR17, 0x00); | |
1573 | /* signature generator */ | |
1574 | vga_wseq(cinfo->regbase, CL_SEQR18, 0x02); | |
1da177e4 LT |
1575 | } |
1576 | ||
8503df65 KH |
1577 | /* Screen A preset row scan: none */ |
1578 | vga_wcrt(cinfo->regbase, VGA_CRTC_PRESET_ROW, 0x00); | |
1579 | /* Text cursor start: disable text cursor */ | |
1580 | vga_wcrt(cinfo->regbase, VGA_CRTC_CURSOR_START, 0x20); | |
1581 | /* Text cursor end: - */ | |
1582 | vga_wcrt(cinfo->regbase, VGA_CRTC_CURSOR_END, 0x00); | |
8503df65 KH |
1583 | /* text cursor location high: 0 */ |
1584 | vga_wcrt(cinfo->regbase, VGA_CRTC_CURSOR_HI, 0x00); | |
1585 | /* text cursor location low: 0 */ | |
1586 | vga_wcrt(cinfo->regbase, VGA_CRTC_CURSOR_LO, 0x00); | |
1587 | ||
1588 | /* Underline Row scanline: - */ | |
1589 | vga_wcrt(cinfo->regbase, VGA_CRTC_UNDERLINE, 0x00); | |
1da177e4 | 1590 | /* ### add 0x40 for text modes with > 30 MHz pixclock */ |
8503df65 KH |
1591 | /* ext. display controls: ext.adr. wrap */ |
1592 | vga_wcrt(cinfo->regbase, CL_CRT1B, 0x02); | |
1593 | ||
1594 | /* Set/Reset registes: - */ | |
1595 | vga_wgfx(cinfo->regbase, VGA_GFX_SR_VALUE, 0x00); | |
1596 | /* Set/Reset enable: - */ | |
1597 | vga_wgfx(cinfo->regbase, VGA_GFX_SR_ENABLE, 0x00); | |
1598 | /* Color Compare: - */ | |
1599 | vga_wgfx(cinfo->regbase, VGA_GFX_COMPARE_VALUE, 0x00); | |
1600 | /* Data Rotate: - */ | |
1601 | vga_wgfx(cinfo->regbase, VGA_GFX_DATA_ROTATE, 0x00); | |
1602 | /* Read Map Select: - */ | |
1603 | vga_wgfx(cinfo->regbase, VGA_GFX_PLANE_READ, 0x00); | |
1604 | /* Mode: conf. for 16/4/2 color mode, no odd/even, read/write mode 0 */ | |
1605 | vga_wgfx(cinfo->regbase, VGA_GFX_MODE, 0x00); | |
1606 | /* Miscellaneous: memory map base address, graphics mode */ | |
1607 | vga_wgfx(cinfo->regbase, VGA_GFX_MISC, 0x01); | |
1608 | /* Color Don't care: involve all planes */ | |
1609 | vga_wgfx(cinfo->regbase, VGA_GFX_COMPARE_MASK, 0x0f); | |
1610 | /* Bit Mask: no mask at all */ | |
1611 | vga_wgfx(cinfo->regbase, VGA_GFX_BIT_MASK, 0xff); | |
1b48cb56 | 1612 | |
df3aafd5 KH |
1613 | if (cinfo->btype == BT_ALPINE || cinfo->btype == BT_SD64 || |
1614 | is_laguna(cinfo)) | |
8503df65 KH |
1615 | /* (5434 can't have bit 3 set for bitblt) */ |
1616 | vga_wgfx(cinfo->regbase, CL_GRB, 0x20); | |
1da177e4 | 1617 | else |
8503df65 KH |
1618 | /* Graphics controller mode extensions: finer granularity, |
1619 | * 8byte data latches | |
1620 | */ | |
1621 | vga_wgfx(cinfo->regbase, CL_GRB, 0x28); | |
1622 | ||
1623 | vga_wgfx(cinfo->regbase, CL_GRC, 0xff); /* Color Key compare: - */ | |
1624 | vga_wgfx(cinfo->regbase, CL_GRD, 0x00); /* Color Key compare mask: - */ | |
1625 | vga_wgfx(cinfo->regbase, CL_GRE, 0x00); /* Miscellaneous control: - */ | |
1626 | /* Background color byte 1: - */ | |
1627 | /* vga_wgfx (cinfo->regbase, CL_GR10, 0x00); */ | |
1628 | /* vga_wgfx (cinfo->regbase, CL_GR11, 0x00); */ | |
1629 | ||
1630 | /* Attribute Controller palette registers: "identity mapping" */ | |
1631 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE0, 0x00); | |
1632 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE1, 0x01); | |
1633 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE2, 0x02); | |
1634 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE3, 0x03); | |
1635 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE4, 0x04); | |
1636 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE5, 0x05); | |
1637 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE6, 0x06); | |
1638 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE7, 0x07); | |
1639 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE8, 0x08); | |
1640 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE9, 0x09); | |
1641 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTEA, 0x0a); | |
1642 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTEB, 0x0b); | |
1643 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTEC, 0x0c); | |
1644 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTED, 0x0d); | |
1645 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTEE, 0x0e); | |
1646 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTEF, 0x0f); | |
1647 | ||
1648 | /* Attribute Controller mode: graphics mode */ | |
1649 | vga_wattr(cinfo->regbase, VGA_ATC_MODE, 0x01); | |
1650 | /* Overscan color reg.: reg. 0 */ | |
1651 | vga_wattr(cinfo->regbase, VGA_ATC_OVERSCAN, 0x00); | |
1652 | /* Color Plane enable: Enable all 4 planes */ | |
1653 | vga_wattr(cinfo->regbase, VGA_ATC_PLANE_ENABLE, 0x0f); | |
8503df65 KH |
1654 | /* Color Select: - */ |
1655 | vga_wattr(cinfo->regbase, VGA_ATC_COLOR_PAGE, 0x00); | |
1656 | ||
1657 | WGen(cinfo, VGA_PEL_MSK, 0xff); /* Pixel mask: no mask */ | |
1da177e4 | 1658 | |
8503df65 KH |
1659 | /* BLT Start/status: Blitter reset */ |
1660 | vga_wgfx(cinfo->regbase, CL_GR31, 0x04); | |
1661 | /* - " - : "end-of-reset" */ | |
1662 | vga_wgfx(cinfo->regbase, CL_GR31, 0x00); | |
1da177e4 LT |
1663 | |
1664 | /* misc... */ | |
8503df65 | 1665 | WHDR(cinfo, 0); /* Hidden DAC register: - */ |
1da177e4 LT |
1666 | return; |
1667 | } | |
1668 | ||
8503df65 | 1669 | static void switch_monitor(struct cirrusfb_info *cinfo, int on) |
1da177e4 LT |
1670 | { |
1671 | #ifdef CONFIG_ZORRO /* only works on Zorro boards */ | |
1672 | static int IsOn = 0; /* XXX not ok for multiple boards */ | |
1673 | ||
1da177e4 LT |
1674 | if (cinfo->btype == BT_PICASSO4) |
1675 | return; /* nothing to switch */ | |
1676 | if (cinfo->btype == BT_ALPINE) | |
1677 | return; /* nothing to switch */ | |
1678 | if (cinfo->btype == BT_GD5480) | |
1679 | return; /* nothing to switch */ | |
1680 | if (cinfo->btype == BT_PICASSO) { | |
1681 | if ((on && !IsOn) || (!on && IsOn)) | |
8503df65 | 1682 | WSFR(cinfo, 0xff); |
1da177e4 LT |
1683 | return; |
1684 | } | |
1685 | if (on) { | |
1686 | switch (cinfo->btype) { | |
1687 | case BT_SD64: | |
8503df65 | 1688 | WSFR(cinfo, cinfo->SFR | 0x21); |
1da177e4 LT |
1689 | break; |
1690 | case BT_PICCOLO: | |
8503df65 | 1691 | WSFR(cinfo, cinfo->SFR | 0x28); |
1da177e4 LT |
1692 | break; |
1693 | case BT_SPECTRUM: | |
8503df65 | 1694 | WSFR(cinfo, 0x6f); |
1da177e4 LT |
1695 | break; |
1696 | default: /* do nothing */ break; | |
1697 | } | |
1698 | } else { | |
1699 | switch (cinfo->btype) { | |
1700 | case BT_SD64: | |
8503df65 | 1701 | WSFR(cinfo, cinfo->SFR & 0xde); |
1da177e4 LT |
1702 | break; |
1703 | case BT_PICCOLO: | |
8503df65 | 1704 | WSFR(cinfo, cinfo->SFR & 0xd7); |
1da177e4 LT |
1705 | break; |
1706 | case BT_SPECTRUM: | |
8503df65 | 1707 | WSFR(cinfo, 0x4f); |
1da177e4 | 1708 | break; |
75ed3a17 KH |
1709 | default: /* do nothing */ |
1710 | break; | |
1da177e4 LT |
1711 | } |
1712 | } | |
1da177e4 LT |
1713 | #endif /* CONFIG_ZORRO */ |
1714 | } | |
1715 | ||
1da177e4 LT |
1716 | /******************************************/ |
1717 | /* Linux 2.6-style accelerated functions */ | |
1718 | /******************************************/ | |
1719 | ||
8343c89c KH |
1720 | static int cirrusfb_sync(struct fb_info *info) |
1721 | { | |
1722 | struct cirrusfb_info *cinfo = info->par; | |
1723 | ||
1724 | if (!is_laguna(cinfo)) { | |
1725 | while (vga_rgfx(cinfo->regbase, CL_GR31) & 0x03) | |
1726 | cpu_relax(); | |
1727 | } | |
1728 | return 0; | |
1729 | } | |
1730 | ||
8503df65 KH |
1731 | static void cirrusfb_fillrect(struct fb_info *info, |
1732 | const struct fb_fillrect *region) | |
1da177e4 | 1733 | { |
1da177e4 LT |
1734 | struct fb_fillrect modded; |
1735 | int vxres, vyres; | |
060b6002 KH |
1736 | struct cirrusfb_info *cinfo = info->par; |
1737 | int m = info->var.bits_per_pixel; | |
1738 | u32 color = (info->fix.visual == FB_VISUAL_TRUECOLOR) ? | |
1739 | cinfo->pseudo_palette[region->color] : region->color; | |
1da177e4 LT |
1740 | |
1741 | if (info->state != FBINFO_STATE_RUNNING) | |
1742 | return; | |
1743 | if (info->flags & FBINFO_HWACCEL_DISABLED) { | |
1744 | cfb_fillrect(info, region); | |
1745 | return; | |
1746 | } | |
1747 | ||
1748 | vxres = info->var.xres_virtual; | |
1749 | vyres = info->var.yres_virtual; | |
1750 | ||
1751 | memcpy(&modded, region, sizeof(struct fb_fillrect)); | |
1752 | ||
8503df65 | 1753 | if (!modded.width || !modded.height || |
1da177e4 LT |
1754 | modded.dx >= vxres || modded.dy >= vyres) |
1755 | return; | |
1756 | ||
8503df65 KH |
1757 | if (modded.dx + modded.width > vxres) |
1758 | modded.width = vxres - modded.dx; | |
1759 | if (modded.dy + modded.height > vyres) | |
1760 | modded.height = vyres - modded.dy; | |
1da177e4 | 1761 | |
060b6002 KH |
1762 | cirrusfb_RectFill(cinfo->regbase, |
1763 | info->var.bits_per_pixel, | |
1764 | (region->dx * m) / 8, region->dy, | |
1765 | (region->width * m) / 8, region->height, | |
9e848062 KH |
1766 | color, color, |
1767 | info->fix.line_length, 0x40); | |
1da177e4 LT |
1768 | } |
1769 | ||
8503df65 KH |
1770 | static void cirrusfb_copyarea(struct fb_info *info, |
1771 | const struct fb_copyarea *area) | |
1da177e4 | 1772 | { |
1da177e4 LT |
1773 | struct fb_copyarea modded; |
1774 | u32 vxres, vyres; | |
060b6002 KH |
1775 | struct cirrusfb_info *cinfo = info->par; |
1776 | int m = info->var.bits_per_pixel; | |
1da177e4 LT |
1777 | |
1778 | if (info->state != FBINFO_STATE_RUNNING) | |
1779 | return; | |
1780 | if (info->flags & FBINFO_HWACCEL_DISABLED) { | |
1781 | cfb_copyarea(info, area); | |
1782 | return; | |
1783 | } | |
1784 | ||
1785 | vxres = info->var.xres_virtual; | |
1786 | vyres = info->var.yres_virtual; | |
060b6002 | 1787 | memcpy(&modded, area, sizeof(struct fb_copyarea)); |
1da177e4 | 1788 | |
8503df65 | 1789 | if (!modded.width || !modded.height || |
1da177e4 LT |
1790 | modded.sx >= vxres || modded.sy >= vyres || |
1791 | modded.dx >= vxres || modded.dy >= vyres) | |
1792 | return; | |
1793 | ||
8503df65 KH |
1794 | if (modded.sx + modded.width > vxres) |
1795 | modded.width = vxres - modded.sx; | |
1796 | if (modded.dx + modded.width > vxres) | |
1797 | modded.width = vxres - modded.dx; | |
1798 | if (modded.sy + modded.height > vyres) | |
1799 | modded.height = vyres - modded.sy; | |
1800 | if (modded.dy + modded.height > vyres) | |
1801 | modded.height = vyres - modded.dy; | |
1da177e4 | 1802 | |
060b6002 KH |
1803 | cirrusfb_BitBLT(cinfo->regbase, info->var.bits_per_pixel, |
1804 | (area->sx * m) / 8, area->sy, | |
1805 | (area->dx * m) / 8, area->dy, | |
1806 | (area->width * m) / 8, area->height, | |
0ff1edee | 1807 | info->fix.line_length); |
060b6002 | 1808 | |
1da177e4 LT |
1809 | } |
1810 | ||
8503df65 KH |
1811 | static void cirrusfb_imageblit(struct fb_info *info, |
1812 | const struct fb_image *image) | |
1da177e4 LT |
1813 | { |
1814 | struct cirrusfb_info *cinfo = info->par; | |
7cade31c | 1815 | unsigned char op = (info->var.bits_per_pixel == 24) ? 0xc : 0x4; |
1da177e4 | 1816 | |
9e848062 KH |
1817 | if (info->state != FBINFO_STATE_RUNNING) |
1818 | return; | |
df3aafd5 KH |
1819 | /* Alpine/SD64 does not work at 24bpp ??? */ |
1820 | if (info->flags & FBINFO_HWACCEL_DISABLED || image->depth != 1) | |
1821 | cfb_imageblit(info, image); | |
1822 | else if ((cinfo->btype == BT_ALPINE || cinfo->btype == BT_SD64) && | |
1823 | op == 0xc) | |
9e848062 KH |
1824 | cfb_imageblit(info, image); |
1825 | else { | |
1826 | unsigned size = ((image->width + 7) >> 3) * image->height; | |
1827 | int m = info->var.bits_per_pixel; | |
1828 | u32 fg, bg; | |
1829 | ||
1830 | if (info->var.bits_per_pixel == 8) { | |
1831 | fg = image->fg_color; | |
1832 | bg = image->bg_color; | |
1833 | } else { | |
1834 | fg = ((u32 *)(info->pseudo_palette))[image->fg_color]; | |
1835 | bg = ((u32 *)(info->pseudo_palette))[image->bg_color]; | |
1836 | } | |
7cade31c KH |
1837 | if (info->var.bits_per_pixel == 24) { |
1838 | /* clear background first */ | |
1839 | cirrusfb_RectFill(cinfo->regbase, | |
1840 | info->var.bits_per_pixel, | |
1841 | (image->dx * m) / 8, image->dy, | |
1842 | (image->width * m) / 8, | |
1843 | image->height, | |
1844 | bg, bg, | |
1845 | info->fix.line_length, 0x40); | |
1846 | } | |
9e848062 KH |
1847 | cirrusfb_RectFill(cinfo->regbase, |
1848 | info->var.bits_per_pixel, | |
1849 | (image->dx * m) / 8, image->dy, | |
1850 | (image->width * m) / 8, image->height, | |
1851 | fg, bg, | |
7cade31c | 1852 | info->fix.line_length, op); |
9e848062 KH |
1853 | memcpy(info->screen_base, image->data, size); |
1854 | } | |
1da177e4 LT |
1855 | } |
1856 | ||
1da177e4 LT |
1857 | #ifdef CONFIG_PPC_PREP |
1858 | #define PREP_VIDEO_BASE ((volatile unsigned long) 0xC0000000) | |
1859 | #define PREP_IO_BASE ((volatile unsigned char *) 0x80000000) | |
8503df65 | 1860 | static void get_prep_addrs(unsigned long *display, unsigned long *registers) |
1da177e4 | 1861 | { |
1da177e4 LT |
1862 | *display = PREP_VIDEO_BASE; |
1863 | *registers = (unsigned long) PREP_IO_BASE; | |
1da177e4 LT |
1864 | } |
1865 | ||
1866 | #endif /* CONFIG_PPC_PREP */ | |
1867 | ||
1da177e4 | 1868 | #ifdef CONFIG_PCI |
8503df65 | 1869 | static int release_io_ports; |
1da177e4 LT |
1870 | |
1871 | /* Pulled the logic from XFree86 Cirrus driver to get the memory size, | |
1872 | * based on the DRAM bandwidth bit and DRAM bank switching bit. This | |
1873 | * works with 1MB, 2MB and 4MB configurations (which the Motorola boards | |
1874 | * seem to have. */ | |
75ed3a17 KH |
1875 | static unsigned int __devinit cirrusfb_get_memsize(struct fb_info *info, |
1876 | u8 __iomem *regbase) | |
1da177e4 LT |
1877 | { |
1878 | unsigned long mem; | |
55a4ea6a | 1879 | struct cirrusfb_info *cinfo = info->par; |
1da177e4 | 1880 | |
78d780e0 | 1881 | if (is_laguna(cinfo)) { |
55a4ea6a KH |
1882 | unsigned char SR14 = vga_rseq(regbase, CL_SEQR14); |
1883 | ||
1884 | mem = ((SR14 & 7) + 1) << 20; | |
1885 | } else { | |
1886 | unsigned char SRF = vga_rseq(regbase, CL_SEQRF); | |
1887 | switch ((SRF & 0x18)) { | |
1888 | case 0x08: | |
1889 | mem = 512 * 1024; | |
1890 | break; | |
1891 | case 0x10: | |
1892 | mem = 1024 * 1024; | |
1893 | break; | |
1894 | /* 64-bit DRAM data bus width; assume 2MB. | |
1895 | * Also indicates 2MB memory on the 5430. | |
1896 | */ | |
1897 | case 0x18: | |
1898 | mem = 2048 * 1024; | |
1899 | break; | |
1900 | default: | |
1901 | dev_warn(info->device, "Unknown memory size!\n"); | |
1902 | mem = 1024 * 1024; | |
1903 | } | |
1904 | /* If DRAM bank switching is enabled, there must be | |
1905 | * twice as much memory installed. (4MB on the 5434) | |
1906 | */ | |
df3aafd5 | 1907 | if (cinfo->btype != BT_ALPINE && (SRF & 0x80) != 0) |
55a4ea6a | 1908 | mem *= 2; |
1da177e4 | 1909 | } |
8503df65 | 1910 | |
1da177e4 | 1911 | /* TODO: Handling of GD5446/5480 (see XF86 sources ...) */ |
1da177e4 LT |
1912 | return mem; |
1913 | } | |
1914 | ||
8503df65 KH |
1915 | static void get_pci_addrs(const struct pci_dev *pdev, |
1916 | unsigned long *display, unsigned long *registers) | |
1da177e4 | 1917 | { |
8503df65 KH |
1918 | assert(pdev != NULL); |
1919 | assert(display != NULL); | |
1920 | assert(registers != NULL); | |
1da177e4 | 1921 | |
1da177e4 LT |
1922 | *display = 0; |
1923 | *registers = 0; | |
1924 | ||
1925 | /* This is a best-guess for now */ | |
1926 | ||
1927 | if (pci_resource_flags(pdev, 0) & IORESOURCE_IO) { | |
1928 | *display = pci_resource_start(pdev, 1); | |
1929 | *registers = pci_resource_start(pdev, 0); | |
1930 | } else { | |
1931 | *display = pci_resource_start(pdev, 0); | |
1932 | *registers = pci_resource_start(pdev, 1); | |
1933 | } | |
1934 | ||
8503df65 | 1935 | assert(*display != 0); |
1da177e4 LT |
1936 | } |
1937 | ||
9199ec5c | 1938 | static void cirrusfb_pci_unmap(struct fb_info *info) |
1da177e4 | 1939 | { |
64beab14 | 1940 | struct pci_dev *pdev = to_pci_dev(info->device); |
6e30fc08 | 1941 | struct cirrusfb_info *cinfo = info->par; |
1da177e4 | 1942 | |
6e30fc08 KH |
1943 | if (cinfo->laguna_mmio == NULL) |
1944 | iounmap(cinfo->laguna_mmio); | |
9199ec5c | 1945 | iounmap(info->screen_base); |
1da177e4 LT |
1946 | #if 0 /* if system didn't claim this region, we would... */ |
1947 | release_mem_region(0xA0000, 65535); | |
1948 | #endif | |
1949 | if (release_io_ports) | |
1950 | release_region(0x3C0, 32); | |
1951 | pci_release_regions(pdev); | |
1da177e4 LT |
1952 | } |
1953 | #endif /* CONFIG_PCI */ | |
1954 | ||
1da177e4 | 1955 | #ifdef CONFIG_ZORRO |
f5ee051e | 1956 | static void cirrusfb_zorro_unmap(struct fb_info *info) |
1da177e4 | 1957 | { |
d91f5bb6 | 1958 | struct cirrusfb_info *cinfo = info->par; |
64beab14 KH |
1959 | struct zorro_dev *zdev = to_zorro_dev(info->device); |
1960 | ||
1961 | zorro_release_device(zdev); | |
1da177e4 LT |
1962 | |
1963 | if (cinfo->btype == BT_PICASSO4) { | |
1964 | cinfo->regbase -= 0x600000; | |
8503df65 | 1965 | iounmap((void *)cinfo->regbase); |
9199ec5c | 1966 | iounmap(info->screen_base); |
1da177e4 | 1967 | } else { |
64beab14 | 1968 | if (zorro_resource_start(zdev) > 0x01000000) |
9199ec5c | 1969 | iounmap(info->screen_base); |
1da177e4 | 1970 | } |
1da177e4 LT |
1971 | } |
1972 | #endif /* CONFIG_ZORRO */ | |
1973 | ||
48c329e9 KH |
1974 | /* function table of the above functions */ |
1975 | static struct fb_ops cirrusfb_ops = { | |
1976 | .owner = THIS_MODULE, | |
1977 | .fb_open = cirrusfb_open, | |
1978 | .fb_release = cirrusfb_release, | |
1979 | .fb_setcolreg = cirrusfb_setcolreg, | |
1980 | .fb_check_var = cirrusfb_check_var, | |
1981 | .fb_set_par = cirrusfb_set_par, | |
1982 | .fb_pan_display = cirrusfb_pan_display, | |
1983 | .fb_blank = cirrusfb_blank, | |
1984 | .fb_fillrect = cirrusfb_fillrect, | |
1985 | .fb_copyarea = cirrusfb_copyarea, | |
8343c89c | 1986 | .fb_sync = cirrusfb_sync, |
48c329e9 KH |
1987 | .fb_imageblit = cirrusfb_imageblit, |
1988 | }; | |
1989 | ||
c395d3e8 | 1990 | static int __devinit cirrusfb_set_fbinfo(struct fb_info *info) |
1da177e4 | 1991 | { |
9199ec5c | 1992 | struct cirrusfb_info *cinfo = info->par; |
1da177e4 LT |
1993 | struct fb_var_screeninfo *var = &info->var; |
1994 | ||
1da177e4 LT |
1995 | info->pseudo_palette = cinfo->pseudo_palette; |
1996 | info->flags = FBINFO_DEFAULT | |
1997 | | FBINFO_HWACCEL_XPAN | |
1998 | | FBINFO_HWACCEL_YPAN | |
1999 | | FBINFO_HWACCEL_FILLRECT | |
9e848062 | 2000 | | FBINFO_HWACCEL_IMAGEBLIT |
1da177e4 | 2001 | | FBINFO_HWACCEL_COPYAREA; |
614c0dc9 | 2002 | if (noaccel || is_laguna(cinfo)) { |
1da177e4 | 2003 | info->flags |= FBINFO_HWACCEL_DISABLED; |
614c0dc9 KH |
2004 | info->fix.accel = FB_ACCEL_NONE; |
2005 | } else | |
2006 | info->fix.accel = FB_ACCEL_CIRRUS_ALPINE; | |
2007 | ||
1da177e4 | 2008 | info->fbops = &cirrusfb_ops; |
9e848062 | 2009 | |
1da177e4 LT |
2010 | if (cinfo->btype == BT_GD5480) { |
2011 | if (var->bits_per_pixel == 16) | |
2012 | info->screen_base += 1 * MB_; | |
1cea9a9a | 2013 | if (var->bits_per_pixel == 32) |
1da177e4 LT |
2014 | info->screen_base += 2 * MB_; |
2015 | } | |
2016 | ||
2017 | /* Fill fix common fields */ | |
2018 | strlcpy(info->fix.id, cirrusfb_board_info[cinfo->btype].name, | |
2019 | sizeof(info->fix.id)); | |
2020 | ||
2021 | /* monochrome: only 1 memory plane */ | |
2022 | /* 8 bit and above: Use whole memory area */ | |
9199ec5c KH |
2023 | info->fix.smem_len = info->screen_size; |
2024 | if (var->bits_per_pixel == 1) | |
2025 | info->fix.smem_len /= 4; | |
1da177e4 | 2026 | info->fix.type_aux = 0; |
1da177e4 LT |
2027 | info->fix.xpanstep = 1; |
2028 | info->fix.ypanstep = 1; | |
2029 | info->fix.ywrapstep = 0; | |
1da177e4 LT |
2030 | |
2031 | /* FIXME: map region at 0xB8000 if available, fill in here */ | |
1da177e4 | 2032 | info->fix.mmio_len = 0; |
1da177e4 LT |
2033 | |
2034 | fb_alloc_cmap(&info->cmap, 256, 0); | |
2035 | ||
2036 | return 0; | |
2037 | } | |
2038 | ||
c395d3e8 | 2039 | static int __devinit cirrusfb_register(struct fb_info *info) |
1da177e4 | 2040 | { |
9199ec5c | 2041 | struct cirrusfb_info *cinfo = info->par; |
1da177e4 | 2042 | int err; |
1da177e4 LT |
2043 | |
2044 | /* sanity checks */ | |
48c329e9 | 2045 | assert(cinfo->btype != BT_NONE); |
1da177e4 | 2046 | |
a1d35a7a KH |
2047 | /* set all the vital stuff */ |
2048 | cirrusfb_set_fbinfo(info); | |
2049 | ||
75ed3a17 | 2050 | dev_dbg(info->device, "(RAM start set to: 0x%p)\n", info->screen_base); |
1da177e4 | 2051 | |
a1d35a7a KH |
2052 | err = fb_find_mode(&info->var, info, mode_option, NULL, 0, NULL, 8); |
2053 | if (!err) { | |
75ed3a17 | 2054 | dev_dbg(info->device, "wrong initial video mode\n"); |
a1d35a7a KH |
2055 | err = -EINVAL; |
2056 | goto err_dealloc_cmap; | |
2057 | } | |
2058 | ||
1da177e4 LT |
2059 | info->var.activate = FB_ACTIVATE_NOW; |
2060 | ||
99a45847 | 2061 | err = cirrusfb_check_var(&info->var, info); |
1da177e4 LT |
2062 | if (err < 0) { |
2063 | /* should never happen */ | |
75ed3a17 KH |
2064 | dev_dbg(info->device, |
2065 | "choking on default var... umm, no good.\n"); | |
a1d35a7a | 2066 | goto err_dealloc_cmap; |
1da177e4 LT |
2067 | } |
2068 | ||
1da177e4 LT |
2069 | err = register_framebuffer(info); |
2070 | if (err < 0) { | |
75ed3a17 KH |
2071 | dev_err(info->device, |
2072 | "could not register fb device; err = %d!\n", err); | |
1da177e4 LT |
2073 | goto err_dealloc_cmap; |
2074 | } | |
2075 | ||
1da177e4 LT |
2076 | return 0; |
2077 | ||
2078 | err_dealloc_cmap: | |
2079 | fb_dealloc_cmap(&info->cmap); | |
1da177e4 LT |
2080 | return err; |
2081 | } | |
2082 | ||
8503df65 | 2083 | static void __devexit cirrusfb_cleanup(struct fb_info *info) |
1da177e4 LT |
2084 | { |
2085 | struct cirrusfb_info *cinfo = info->par; | |
1da177e4 | 2086 | |
8503df65 | 2087 | switch_monitor(cinfo, 0); |
8503df65 KH |
2088 | unregister_framebuffer(info); |
2089 | fb_dealloc_cmap(&info->cmap); | |
75ed3a17 | 2090 | dev_dbg(info->device, "Framebuffer unregistered\n"); |
9199ec5c | 2091 | cinfo->unmap(info); |
060b6002 | 2092 | framebuffer_release(info); |
1da177e4 LT |
2093 | } |
2094 | ||
1da177e4 | 2095 | #ifdef CONFIG_PCI |
c395d3e8 KH |
2096 | static int __devinit cirrusfb_pci_register(struct pci_dev *pdev, |
2097 | const struct pci_device_id *ent) | |
1da177e4 LT |
2098 | { |
2099 | struct cirrusfb_info *cinfo; | |
2100 | struct fb_info *info; | |
1da177e4 LT |
2101 | unsigned long board_addr, board_size; |
2102 | int ret; | |
2103 | ||
2104 | ret = pci_enable_device(pdev); | |
2105 | if (ret < 0) { | |
2106 | printk(KERN_ERR "cirrusfb: Cannot enable PCI device\n"); | |
2107 | goto err_out; | |
2108 | } | |
2109 | ||
2110 | info = framebuffer_alloc(sizeof(struct cirrusfb_info), &pdev->dev); | |
2111 | if (!info) { | |
2112 | printk(KERN_ERR "cirrusfb: could not allocate memory\n"); | |
2113 | ret = -ENOMEM; | |
78d780e0 | 2114 | goto err_out; |
1da177e4 LT |
2115 | } |
2116 | ||
2117 | cinfo = info->par; | |
48c329e9 | 2118 | cinfo->btype = (enum cirrus_board) ent->driver_data; |
1da177e4 | 2119 | |
75ed3a17 KH |
2120 | dev_dbg(info->device, |
2121 | " Found PCI device, base address 0 is 0x%Lx, btype set to %d\n", | |
48c329e9 | 2122 | (unsigned long long)pdev->resource[0].start, cinfo->btype); |
75ed3a17 KH |
2123 | dev_dbg(info->device, " base address 1 is 0x%Lx\n", |
2124 | (unsigned long long)pdev->resource[1].start); | |
1da177e4 | 2125 | |
8503df65 KH |
2126 | if (isPReP) { |
2127 | pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, 0x00000000); | |
1da177e4 | 2128 | #ifdef CONFIG_PPC_PREP |
9199ec5c | 2129 | get_prep_addrs(&board_addr, &info->fix.mmio_start); |
1da177e4 | 2130 | #endif |
8503df65 | 2131 | /* PReP dies if we ioremap the IO registers, but it works w/out... */ |
9199ec5c | 2132 | cinfo->regbase = (char __iomem *) info->fix.mmio_start; |
1da177e4 | 2133 | } else { |
75ed3a17 KH |
2134 | dev_dbg(info->device, |
2135 | "Attempt to get PCI info for Cirrus Graphics Card\n"); | |
9199ec5c | 2136 | get_pci_addrs(pdev, &board_addr, &info->fix.mmio_start); |
8503df65 KH |
2137 | /* FIXME: this forces VGA. alternatives? */ |
2138 | cinfo->regbase = NULL; | |
6e30fc08 | 2139 | cinfo->laguna_mmio = ioremap(info->fix.mmio_start, 0x1000); |
1da177e4 LT |
2140 | } |
2141 | ||
75ed3a17 | 2142 | dev_dbg(info->device, "Board address: 0x%lx, register address: 0x%lx\n", |
9199ec5c | 2143 | board_addr, info->fix.mmio_start); |
1da177e4 | 2144 | |
48c329e9 | 2145 | board_size = (cinfo->btype == BT_GD5480) ? |
75ed3a17 | 2146 | 32 * MB_ : cirrusfb_get_memsize(info, cinfo->regbase); |
1da177e4 LT |
2147 | |
2148 | ret = pci_request_regions(pdev, "cirrusfb"); | |
8503df65 | 2149 | if (ret < 0) { |
75ed3a17 KH |
2150 | dev_err(info->device, "cannot reserve region 0x%lx, abort\n", |
2151 | board_addr); | |
1da177e4 LT |
2152 | goto err_release_fb; |
2153 | } | |
2154 | #if 0 /* if the system didn't claim this region, we would... */ | |
2155 | if (!request_mem_region(0xA0000, 65535, "cirrusfb")) { | |
75ed3a17 KH |
2156 | dev_err(info->device, "cannot reserve region 0x%lx, abort\n", |
2157 | 0xA0000L); | |
1da177e4 LT |
2158 | ret = -EBUSY; |
2159 | goto err_release_regions; | |
2160 | } | |
2161 | #endif | |
2162 | if (request_region(0x3C0, 32, "cirrusfb")) | |
2163 | release_io_ports = 1; | |
2164 | ||
9199ec5c KH |
2165 | info->screen_base = ioremap(board_addr, board_size); |
2166 | if (!info->screen_base) { | |
1da177e4 LT |
2167 | ret = -EIO; |
2168 | goto err_release_legacy; | |
2169 | } | |
2170 | ||
9199ec5c KH |
2171 | info->fix.smem_start = board_addr; |
2172 | info->screen_size = board_size; | |
1da177e4 LT |
2173 | cinfo->unmap = cirrusfb_pci_unmap; |
2174 | ||
75ed3a17 KH |
2175 | dev_info(info->device, |
2176 | "Cirrus Logic chipset on PCI bus, RAM (%lu kB) at 0x%lx\n", | |
2177 | info->screen_size >> 10, board_addr); | |
1da177e4 LT |
2178 | pci_set_drvdata(pdev, info); |
2179 | ||
9199ec5c | 2180 | ret = cirrusfb_register(info); |
78d780e0 KH |
2181 | if (!ret) |
2182 | return 0; | |
1da177e4 | 2183 | |
78d780e0 KH |
2184 | pci_set_drvdata(pdev, NULL); |
2185 | iounmap(info->screen_base); | |
1da177e4 LT |
2186 | err_release_legacy: |
2187 | if (release_io_ports) | |
2188 | release_region(0x3C0, 32); | |
2189 | #if 0 | |
2190 | release_mem_region(0xA0000, 65535); | |
2191 | err_release_regions: | |
2192 | #endif | |
2193 | pci_release_regions(pdev); | |
2194 | err_release_fb: | |
78d780e0 | 2195 | if (cinfo->laguna_mmio != NULL) |
6e30fc08 | 2196 | iounmap(cinfo->laguna_mmio); |
1da177e4 | 2197 | framebuffer_release(info); |
1da177e4 LT |
2198 | err_out: |
2199 | return ret; | |
2200 | } | |
2201 | ||
8503df65 | 2202 | static void __devexit cirrusfb_pci_unregister(struct pci_dev *pdev) |
1da177e4 LT |
2203 | { |
2204 | struct fb_info *info = pci_get_drvdata(pdev); | |
1da177e4 | 2205 | |
8503df65 | 2206 | cirrusfb_cleanup(info); |
1da177e4 LT |
2207 | } |
2208 | ||
2209 | static struct pci_driver cirrusfb_pci_driver = { | |
2210 | .name = "cirrusfb", | |
2211 | .id_table = cirrusfb_pci_table, | |
2212 | .probe = cirrusfb_pci_register, | |
2213 | .remove = __devexit_p(cirrusfb_pci_unregister), | |
2214 | #ifdef CONFIG_PM | |
2215 | #if 0 | |
2216 | .suspend = cirrusfb_pci_suspend, | |
2217 | .resume = cirrusfb_pci_resume, | |
2218 | #endif | |
2219 | #endif | |
2220 | }; | |
2221 | #endif /* CONFIG_PCI */ | |
2222 | ||
1da177e4 | 2223 | #ifdef CONFIG_ZORRO |
c395d3e8 KH |
2224 | static int __devinit cirrusfb_zorro_register(struct zorro_dev *z, |
2225 | const struct zorro_device_id *ent) | |
1da177e4 LT |
2226 | { |
2227 | struct cirrusfb_info *cinfo; | |
2228 | struct fb_info *info; | |
7345de32 | 2229 | enum cirrus_board btype; |
1da177e4 LT |
2230 | struct zorro_dev *z2 = NULL; |
2231 | unsigned long board_addr, board_size, size; | |
2232 | int ret; | |
2233 | ||
2234 | btype = ent->driver_data; | |
2235 | if (cirrusfb_zorro_table2[btype].id2) | |
2236 | z2 = zorro_find_device(cirrusfb_zorro_table2[btype].id2, NULL); | |
2237 | size = cirrusfb_zorro_table2[btype].size; | |
1da177e4 LT |
2238 | |
2239 | info = framebuffer_alloc(sizeof(struct cirrusfb_info), &z->dev); | |
2240 | if (!info) { | |
8503df65 | 2241 | printk(KERN_ERR "cirrusfb: could not allocate memory\n"); |
1da177e4 LT |
2242 | ret = -ENOMEM; |
2243 | goto err_out; | |
2244 | } | |
2245 | ||
75ed3a17 KH |
2246 | dev_info(info->device, "%s board detected\n", |
2247 | cirrusfb_board_info[btype].name); | |
2248 | ||
1da177e4 | 2249 | cinfo = info->par; |
1da177e4 LT |
2250 | cinfo->btype = btype; |
2251 | ||
36ea96a4 | 2252 | assert(z); |
8503df65 | 2253 | assert(btype != BT_NONE); |
1da177e4 | 2254 | |
1da177e4 LT |
2255 | board_addr = zorro_resource_start(z); |
2256 | board_size = zorro_resource_len(z); | |
9199ec5c | 2257 | info->screen_size = size; |
1da177e4 LT |
2258 | |
2259 | if (!zorro_request_device(z, "cirrusfb")) { | |
75ed3a17 KH |
2260 | dev_err(info->device, "cannot reserve region 0x%lx, abort\n", |
2261 | board_addr); | |
1da177e4 LT |
2262 | ret = -EBUSY; |
2263 | goto err_release_fb; | |
2264 | } | |
2265 | ||
1da177e4 LT |
2266 | ret = -EIO; |
2267 | ||
2268 | if (btype == BT_PICASSO4) { | |
75ed3a17 | 2269 | dev_info(info->device, " REG at $%lx\n", board_addr + 0x600000); |
1da177e4 LT |
2270 | |
2271 | /* To be precise, for the P4 this is not the */ | |
2272 | /* begin of the board, but the begin of RAM. */ | |
2273 | /* for P4, map in its address space in 2 chunks (### TEST! ) */ | |
2274 | /* (note the ugly hardcoded 16M number) */ | |
8503df65 | 2275 | cinfo->regbase = ioremap(board_addr, 16777216); |
1da177e4 LT |
2276 | if (!cinfo->regbase) |
2277 | goto err_release_region; | |
2278 | ||
75ed3a17 | 2279 | dev_dbg(info->device, "Virtual address for board set to: $%p\n", |
8503df65 | 2280 | cinfo->regbase); |
1da177e4 | 2281 | cinfo->regbase += 0x600000; |
9199ec5c | 2282 | info->fix.mmio_start = board_addr + 0x600000; |
1da177e4 | 2283 | |
9199ec5c KH |
2284 | info->fix.smem_start = board_addr + 16777216; |
2285 | info->screen_base = ioremap(info->fix.smem_start, 16777216); | |
2286 | if (!info->screen_base) | |
1da177e4 LT |
2287 | goto err_unmap_regbase; |
2288 | } else { | |
75ed3a17 KH |
2289 | dev_info(info->device, " REG at $%lx\n", |
2290 | (unsigned long) z2->resource.start); | |
1da177e4 | 2291 | |
9199ec5c | 2292 | info->fix.smem_start = board_addr; |
1da177e4 | 2293 | if (board_addr > 0x01000000) |
9199ec5c | 2294 | info->screen_base = ioremap(board_addr, board_size); |
1da177e4 | 2295 | else |
9199ec5c KH |
2296 | info->screen_base = (caddr_t) ZTWO_VADDR(board_addr); |
2297 | if (!info->screen_base) | |
1da177e4 LT |
2298 | goto err_release_region; |
2299 | ||
2300 | /* set address for REG area of board */ | |
8503df65 | 2301 | cinfo->regbase = (caddr_t) ZTWO_VADDR(z2->resource.start); |
9199ec5c | 2302 | info->fix.mmio_start = z2->resource.start; |
1da177e4 | 2303 | |
75ed3a17 | 2304 | dev_dbg(info->device, "Virtual address for board set to: $%p\n", |
8503df65 | 2305 | cinfo->regbase); |
1da177e4 LT |
2306 | } |
2307 | cinfo->unmap = cirrusfb_zorro_unmap; | |
2308 | ||
75ed3a17 KH |
2309 | dev_info(info->device, |
2310 | "Cirrus Logic chipset on Zorro bus, RAM (%lu MB) at $%lx\n", | |
2311 | board_size / MB_, board_addr); | |
2312 | ||
1da177e4 LT |
2313 | zorro_set_drvdata(z, info); |
2314 | ||
8f19e15b KH |
2315 | /* MCLK select etc. */ |
2316 | if (cirrusfb_board_info[btype].init_sr1f) | |
2317 | vga_wseq(cinfo->regbase, CL_SEQR1F, | |
2318 | cirrusfb_board_info[btype].sr1f); | |
2319 | ||
d91f5bb6 | 2320 | ret = cirrusfb_register(info); |
bc5d8ac0 KH |
2321 | if (!ret) |
2322 | return 0; | |
2323 | ||
2324 | if (btype == BT_PICASSO4 || board_addr > 0x01000000) | |
2325 | iounmap(info->screen_base); | |
1da177e4 LT |
2326 | |
2327 | err_unmap_regbase: | |
bc5d8ac0 KH |
2328 | if (btype == BT_PICASSO4) |
2329 | iounmap(cinfo->regbase - 0x600000); | |
1da177e4 LT |
2330 | err_release_region: |
2331 | release_region(board_addr, board_size); | |
2332 | err_release_fb: | |
2333 | framebuffer_release(info); | |
2334 | err_out: | |
2335 | return ret; | |
2336 | } | |
2337 | ||
2338 | void __devexit cirrusfb_zorro_unregister(struct zorro_dev *z) | |
2339 | { | |
2340 | struct fb_info *info = zorro_get_drvdata(z); | |
1da177e4 | 2341 | |
8503df65 | 2342 | cirrusfb_cleanup(info); |
1da177e4 LT |
2343 | } |
2344 | ||
2345 | static struct zorro_driver cirrusfb_zorro_driver = { | |
2346 | .name = "cirrusfb", | |
2347 | .id_table = cirrusfb_zorro_table, | |
2348 | .probe = cirrusfb_zorro_register, | |
2349 | .remove = __devexit_p(cirrusfb_zorro_unregister), | |
2350 | }; | |
2351 | #endif /* CONFIG_ZORRO */ | |
2352 | ||
1da177e4 | 2353 | #ifndef MODULE |
75ed3a17 KH |
2354 | static int __init cirrusfb_setup(char *options) |
2355 | { | |
ee11940f | 2356 | char *this_opt; |
1da177e4 | 2357 | |
1da177e4 LT |
2358 | if (!options || !*options) |
2359 | return 0; | |
2360 | ||
8503df65 | 2361 | while ((this_opt = strsep(&options, ",")) != NULL) { |
a1d35a7a KH |
2362 | if (!*this_opt) |
2363 | continue; | |
1da177e4 | 2364 | |
1da177e4 LT |
2365 | if (!strcmp(this_opt, "noaccel")) |
2366 | noaccel = 1; | |
a1d35a7a KH |
2367 | else if (!strncmp(this_opt, "mode:", 5)) |
2368 | mode_option = this_opt + 5; | |
2369 | else | |
2370 | mode_option = this_opt; | |
1da177e4 LT |
2371 | } |
2372 | return 0; | |
2373 | } | |
2374 | #endif | |
2375 | ||
1da177e4 LT |
2376 | /* |
2377 | * Modularization | |
2378 | */ | |
2379 | ||
2380 | MODULE_AUTHOR("Copyright 1999,2000 Jeff Garzik <jgarzik@pobox.com>"); | |
2381 | MODULE_DESCRIPTION("Accelerated FBDev driver for Cirrus Logic chips"); | |
2382 | MODULE_LICENSE("GPL"); | |
2383 | ||
48c329e9 KH |
2384 | static int __init cirrusfb_init(void) |
2385 | { | |
2386 | int error = 0; | |
2387 | ||
2388 | #ifndef MODULE | |
2389 | char *option = NULL; | |
2390 | ||
2391 | if (fb_get_options("cirrusfb", &option)) | |
2392 | return -ENODEV; | |
2393 | cirrusfb_setup(option); | |
2394 | #endif | |
2395 | ||
2396 | #ifdef CONFIG_ZORRO | |
2397 | error |= zorro_register_driver(&cirrusfb_zorro_driver); | |
2398 | #endif | |
2399 | #ifdef CONFIG_PCI | |
2400 | error |= pci_register_driver(&cirrusfb_pci_driver); | |
2401 | #endif | |
2402 | return error; | |
2403 | } | |
2404 | ||
8503df65 | 2405 | static void __exit cirrusfb_exit(void) |
1da177e4 LT |
2406 | { |
2407 | #ifdef CONFIG_PCI | |
2408 | pci_unregister_driver(&cirrusfb_pci_driver); | |
2409 | #endif | |
2410 | #ifdef CONFIG_ZORRO | |
2411 | zorro_unregister_driver(&cirrusfb_zorro_driver); | |
2412 | #endif | |
2413 | } | |
2414 | ||
2415 | module_init(cirrusfb_init); | |
2416 | ||
a1d35a7a KH |
2417 | module_param(mode_option, charp, 0); |
2418 | MODULE_PARM_DESC(mode_option, "Initial video mode e.g. '648x480-8@60'"); | |
55a0dd83 KH |
2419 | module_param(noaccel, bool, 0); |
2420 | MODULE_PARM_DESC(noaccel, "Disable acceleration"); | |
a1d35a7a | 2421 | |
1da177e4 LT |
2422 | #ifdef MODULE |
2423 | module_exit(cirrusfb_exit); | |
2424 | #endif | |
2425 | ||
1da177e4 LT |
2426 | /**********************************************************************/ |
2427 | /* about the following functions - I have used the same names for the */ | |
2428 | /* functions as Markus Wild did in his Retina driver for NetBSD as */ | |
2429 | /* they just made sense for this purpose. Apart from that, I wrote */ | |
8503df65 | 2430 | /* these functions myself. */ |
1da177e4 LT |
2431 | /**********************************************************************/ |
2432 | ||
2433 | /*** WGen() - write into one of the external/general registers ***/ | |
8503df65 | 2434 | static void WGen(const struct cirrusfb_info *cinfo, |
1da177e4 LT |
2435 | int regnum, unsigned char val) |
2436 | { | |
2437 | unsigned long regofs = 0; | |
2438 | ||
2439 | if (cinfo->btype == BT_PICASSO) { | |
2440 | /* Picasso II specific hack */ | |
8503df65 KH |
2441 | /* if (regnum == VGA_PEL_IR || regnum == VGA_PEL_D || |
2442 | regnum == CL_VSSM2) */ | |
1da177e4 LT |
2443 | if (regnum == VGA_PEL_IR || regnum == VGA_PEL_D) |
2444 | regofs = 0xfff; | |
2445 | } | |
2446 | ||
8503df65 | 2447 | vga_w(cinfo->regbase, regofs + regnum, val); |
1da177e4 LT |
2448 | } |
2449 | ||
2450 | /*** RGen() - read out one of the external/general registers ***/ | |
8503df65 | 2451 | static unsigned char RGen(const struct cirrusfb_info *cinfo, int regnum) |
1da177e4 LT |
2452 | { |
2453 | unsigned long regofs = 0; | |
2454 | ||
2455 | if (cinfo->btype == BT_PICASSO) { | |
2456 | /* Picasso II specific hack */ | |
8503df65 KH |
2457 | /* if (regnum == VGA_PEL_IR || regnum == VGA_PEL_D || |
2458 | regnum == CL_VSSM2) */ | |
1da177e4 LT |
2459 | if (regnum == VGA_PEL_IR || regnum == VGA_PEL_D) |
2460 | regofs = 0xfff; | |
2461 | } | |
2462 | ||
8503df65 | 2463 | return vga_r(cinfo->regbase, regofs + regnum); |
1da177e4 LT |
2464 | } |
2465 | ||
2466 | /*** AttrOn() - turn on VideoEnable for Attribute controller ***/ | |
8503df65 | 2467 | static void AttrOn(const struct cirrusfb_info *cinfo) |
1da177e4 | 2468 | { |
8503df65 | 2469 | assert(cinfo != NULL); |
1da177e4 | 2470 | |
8503df65 | 2471 | if (vga_rcrt(cinfo->regbase, CL_CRT24) & 0x80) { |
1da177e4 LT |
2472 | /* if we're just in "write value" mode, write back the */ |
2473 | /* same value as before to not modify anything */ | |
8503df65 KH |
2474 | vga_w(cinfo->regbase, VGA_ATT_IW, |
2475 | vga_r(cinfo->regbase, VGA_ATT_R)); | |
1da177e4 LT |
2476 | } |
2477 | /* turn on video bit */ | |
8503df65 KH |
2478 | /* vga_w(cinfo->regbase, VGA_ATT_IW, 0x20); */ |
2479 | vga_w(cinfo->regbase, VGA_ATT_IW, 0x33); | |
1da177e4 LT |
2480 | |
2481 | /* dummy write on Reg0 to be on "write index" mode next time */ | |
8503df65 | 2482 | vga_w(cinfo->regbase, VGA_ATT_IW, 0x00); |
1da177e4 LT |
2483 | } |
2484 | ||
2485 | /*** WHDR() - write into the Hidden DAC register ***/ | |
2486 | /* as the HDR is the only extension register that requires special treatment | |
2487 | * (the other extension registers are accessible just like the "ordinary" | |
2488 | * registers of their functional group) here is a specialized routine for | |
2489 | * accessing the HDR | |
2490 | */ | |
8503df65 | 2491 | static void WHDR(const struct cirrusfb_info *cinfo, unsigned char val) |
1da177e4 LT |
2492 | { |
2493 | unsigned char dummy; | |
2494 | ||
78d780e0 | 2495 | if (is_laguna(cinfo)) |
1b48cb56 | 2496 | return; |
1da177e4 LT |
2497 | if (cinfo->btype == BT_PICASSO) { |
2498 | /* Klaus' hint for correct access to HDR on some boards */ | |
2499 | /* first write 0 to pixel mask (3c6) */ | |
8503df65 KH |
2500 | WGen(cinfo, VGA_PEL_MSK, 0x00); |
2501 | udelay(200); | |
1da177e4 | 2502 | /* next read dummy from pixel address (3c8) */ |
8503df65 KH |
2503 | dummy = RGen(cinfo, VGA_PEL_IW); |
2504 | udelay(200); | |
1da177e4 LT |
2505 | } |
2506 | /* now do the usual stuff to access the HDR */ | |
2507 | ||
8503df65 KH |
2508 | dummy = RGen(cinfo, VGA_PEL_MSK); |
2509 | udelay(200); | |
2510 | dummy = RGen(cinfo, VGA_PEL_MSK); | |
2511 | udelay(200); | |
2512 | dummy = RGen(cinfo, VGA_PEL_MSK); | |
2513 | udelay(200); | |
2514 | dummy = RGen(cinfo, VGA_PEL_MSK); | |
2515 | udelay(200); | |
1da177e4 | 2516 | |
8503df65 KH |
2517 | WGen(cinfo, VGA_PEL_MSK, val); |
2518 | udelay(200); | |
1da177e4 LT |
2519 | |
2520 | if (cinfo->btype == BT_PICASSO) { | |
2521 | /* now first reset HDR access counter */ | |
8503df65 KH |
2522 | dummy = RGen(cinfo, VGA_PEL_IW); |
2523 | udelay(200); | |
1da177e4 LT |
2524 | |
2525 | /* and at the end, restore the mask value */ | |
2526 | /* ## is this mask always 0xff? */ | |
8503df65 KH |
2527 | WGen(cinfo, VGA_PEL_MSK, 0xff); |
2528 | udelay(200); | |
1da177e4 LT |
2529 | } |
2530 | } | |
2531 | ||
1da177e4 | 2532 | /*** WSFR() - write to the "special function register" (SFR) ***/ |
8503df65 | 2533 | static void WSFR(struct cirrusfb_info *cinfo, unsigned char val) |
1da177e4 LT |
2534 | { |
2535 | #ifdef CONFIG_ZORRO | |
8503df65 | 2536 | assert(cinfo->regbase != NULL); |
1da177e4 | 2537 | cinfo->SFR = val; |
8503df65 | 2538 | z_writeb(val, cinfo->regbase + 0x8000); |
1da177e4 LT |
2539 | #endif |
2540 | } | |
2541 | ||
2542 | /* The Picasso has a second register for switching the monitor bit */ | |
8503df65 | 2543 | static void WSFR2(struct cirrusfb_info *cinfo, unsigned char val) |
1da177e4 LT |
2544 | { |
2545 | #ifdef CONFIG_ZORRO | |
2546 | /* writing an arbitrary value to this one causes the monitor switcher */ | |
2547 | /* to flip to Amiga display */ | |
8503df65 | 2548 | assert(cinfo->regbase != NULL); |
1da177e4 | 2549 | cinfo->SFR = val; |
8503df65 | 2550 | z_writeb(val, cinfo->regbase + 0x9000); |
1da177e4 LT |
2551 | #endif |
2552 | } | |
2553 | ||
1da177e4 | 2554 | /*** WClut - set CLUT entry (range: 0..63) ***/ |
8503df65 | 2555 | static void WClut(struct cirrusfb_info *cinfo, unsigned char regnum, unsigned char red, |
1da177e4 LT |
2556 | unsigned char green, unsigned char blue) |
2557 | { | |
2558 | unsigned int data = VGA_PEL_D; | |
2559 | ||
2560 | /* address write mode register is not translated.. */ | |
8503df65 | 2561 | vga_w(cinfo->regbase, VGA_PEL_IW, regnum); |
1da177e4 LT |
2562 | |
2563 | if (cinfo->btype == BT_PICASSO || cinfo->btype == BT_PICASSO4 || | |
1b48cb56 | 2564 | cinfo->btype == BT_ALPINE || cinfo->btype == BT_GD5480 || |
df3aafd5 | 2565 | cinfo->btype == BT_SD64 || is_laguna(cinfo)) { |
1da177e4 LT |
2566 | /* but DAC data register IS, at least for Picasso II */ |
2567 | if (cinfo->btype == BT_PICASSO) | |
2568 | data += 0xfff; | |
8503df65 KH |
2569 | vga_w(cinfo->regbase, data, red); |
2570 | vga_w(cinfo->regbase, data, green); | |
2571 | vga_w(cinfo->regbase, data, blue); | |
1da177e4 | 2572 | } else { |
8503df65 KH |
2573 | vga_w(cinfo->regbase, data, blue); |
2574 | vga_w(cinfo->regbase, data, green); | |
2575 | vga_w(cinfo->regbase, data, red); | |
1da177e4 LT |
2576 | } |
2577 | } | |
2578 | ||
1da177e4 LT |
2579 | #if 0 |
2580 | /*** RClut - read CLUT entry (range 0..63) ***/ | |
8503df65 | 2581 | static void RClut(struct cirrusfb_info *cinfo, unsigned char regnum, unsigned char *red, |
1da177e4 LT |
2582 | unsigned char *green, unsigned char *blue) |
2583 | { | |
2584 | unsigned int data = VGA_PEL_D; | |
2585 | ||
8503df65 | 2586 | vga_w(cinfo->regbase, VGA_PEL_IR, regnum); |
1da177e4 LT |
2587 | |
2588 | if (cinfo->btype == BT_PICASSO || cinfo->btype == BT_PICASSO4 || | |
2589 | cinfo->btype == BT_ALPINE || cinfo->btype == BT_GD5480) { | |
2590 | if (cinfo->btype == BT_PICASSO) | |
2591 | data += 0xfff; | |
8503df65 KH |
2592 | *red = vga_r(cinfo->regbase, data); |
2593 | *green = vga_r(cinfo->regbase, data); | |
2594 | *blue = vga_r(cinfo->regbase, data); | |
1da177e4 | 2595 | } else { |
8503df65 KH |
2596 | *blue = vga_r(cinfo->regbase, data); |
2597 | *green = vga_r(cinfo->regbase, data); | |
2598 | *red = vga_r(cinfo->regbase, data); | |
1da177e4 LT |
2599 | } |
2600 | } | |
2601 | #endif | |
2602 | ||
1da177e4 LT |
2603 | /******************************************************************* |
2604 | cirrusfb_WaitBLT() | |
2605 | ||
2606 | Wait for the BitBLT engine to complete a possible earlier job | |
2607 | *********************************************************************/ | |
2608 | ||
2609 | /* FIXME: use interrupts instead */ | |
8503df65 | 2610 | static void cirrusfb_WaitBLT(u8 __iomem *regbase) |
1da177e4 | 2611 | { |
8503df65 | 2612 | while (vga_rgfx(regbase, CL_GR31) & 0x08) |
48c329e9 | 2613 | cpu_relax(); |
1da177e4 LT |
2614 | } |
2615 | ||
2616 | /******************************************************************* | |
2617 | cirrusfb_BitBLT() | |
2618 | ||
2619 | perform accelerated "scrolling" | |
2620 | ********************************************************************/ | |
2621 | ||
8343c89c KH |
2622 | static void cirrusfb_set_blitter(u8 __iomem *regbase, |
2623 | u_short nwidth, u_short nheight, | |
2624 | u_long nsrc, u_long ndest, | |
2625 | u_short bltmode, u_short line_length) | |
1da177e4 | 2626 | |
8343c89c | 2627 | { |
1da177e4 | 2628 | /* pitch: set to line_length */ |
8503df65 KH |
2629 | /* dest pitch low */ |
2630 | vga_wgfx(regbase, CL_GR24, line_length & 0xff); | |
2631 | /* dest pitch hi */ | |
2632 | vga_wgfx(regbase, CL_GR25, line_length >> 8); | |
2633 | /* source pitch low */ | |
2634 | vga_wgfx(regbase, CL_GR26, line_length & 0xff); | |
2635 | /* source pitch hi */ | |
2636 | vga_wgfx(regbase, CL_GR27, line_length >> 8); | |
1da177e4 LT |
2637 | |
2638 | /* BLT width: actual number of pixels - 1 */ | |
8503df65 KH |
2639 | /* BLT width low */ |
2640 | vga_wgfx(regbase, CL_GR20, nwidth & 0xff); | |
2641 | /* BLT width hi */ | |
2642 | vga_wgfx(regbase, CL_GR21, nwidth >> 8); | |
1da177e4 LT |
2643 | |
2644 | /* BLT height: actual number of lines -1 */ | |
8503df65 KH |
2645 | /* BLT height low */ |
2646 | vga_wgfx(regbase, CL_GR22, nheight & 0xff); | |
2647 | /* BLT width hi */ | |
2648 | vga_wgfx(regbase, CL_GR23, nheight >> 8); | |
1da177e4 LT |
2649 | |
2650 | /* BLT destination */ | |
8503df65 KH |
2651 | /* BLT dest low */ |
2652 | vga_wgfx(regbase, CL_GR28, (u_char) (ndest & 0xff)); | |
2653 | /* BLT dest mid */ | |
2654 | vga_wgfx(regbase, CL_GR29, (u_char) (ndest >> 8)); | |
2655 | /* BLT dest hi */ | |
2656 | vga_wgfx(regbase, CL_GR2A, (u_char) (ndest >> 16)); | |
1da177e4 LT |
2657 | |
2658 | /* BLT source */ | |
8503df65 KH |
2659 | /* BLT src low */ |
2660 | vga_wgfx(regbase, CL_GR2C, (u_char) (nsrc & 0xff)); | |
2661 | /* BLT src mid */ | |
2662 | vga_wgfx(regbase, CL_GR2D, (u_char) (nsrc >> 8)); | |
2663 | /* BLT src hi */ | |
2664 | vga_wgfx(regbase, CL_GR2E, (u_char) (nsrc >> 16)); | |
1da177e4 LT |
2665 | |
2666 | /* BLT mode */ | |
8503df65 | 2667 | vga_wgfx(regbase, CL_GR30, bltmode); /* BLT mode */ |
1da177e4 LT |
2668 | |
2669 | /* BLT ROP: SrcCopy */ | |
8503df65 | 2670 | vga_wgfx(regbase, CL_GR32, 0x0d); /* BLT ROP */ |
1da177e4 LT |
2671 | |
2672 | /* and finally: GO! */ | |
527410ff | 2673 | vga_wgfx(regbase, CL_GR31, 0x02); /* BLT Start/status */ |
1da177e4 LT |
2674 | } |
2675 | ||
1da177e4 | 2676 | /******************************************************************* |
8343c89c | 2677 | cirrusfb_BitBLT() |
1da177e4 | 2678 | |
8343c89c | 2679 | perform accelerated "scrolling" |
1da177e4 LT |
2680 | ********************************************************************/ |
2681 | ||
8343c89c KH |
2682 | static void cirrusfb_BitBLT(u8 __iomem *regbase, int bits_per_pixel, |
2683 | u_short curx, u_short cury, | |
2684 | u_short destx, u_short desty, | |
2685 | u_short width, u_short height, | |
2686 | u_short line_length) | |
1da177e4 | 2687 | { |
8343c89c KH |
2688 | u_short nwidth = width - 1; |
2689 | u_short nheight = height - 1; | |
2690 | u_long nsrc, ndest; | |
2691 | u_char bltmode; | |
1da177e4 | 2692 | |
8343c89c KH |
2693 | bltmode = 0x00; |
2694 | /* if source adr < dest addr, do the Blt backwards */ | |
2695 | if (cury <= desty) { | |
2696 | if (cury == desty) { | |
2697 | /* if src and dest are on the same line, check x */ | |
2698 | if (curx < destx) | |
2699 | bltmode |= 0x01; | |
2700 | } else | |
2701 | bltmode |= 0x01; | |
2702 | } | |
2703 | /* standard case: forward blitting */ | |
2704 | nsrc = (cury * line_length) + curx; | |
2705 | ndest = (desty * line_length) + destx; | |
2706 | if (bltmode) { | |
2707 | /* this means start addresses are at the end, | |
2708 | * counting backwards | |
2709 | */ | |
2710 | nsrc += nheight * line_length + nwidth; | |
2711 | ndest += nheight * line_length + nwidth; | |
2712 | } | |
1da177e4 | 2713 | |
8503df65 | 2714 | cirrusfb_WaitBLT(regbase); |
1da177e4 | 2715 | |
8343c89c KH |
2716 | cirrusfb_set_blitter(regbase, nwidth, nheight, |
2717 | nsrc, ndest, bltmode, line_length); | |
2718 | } | |
1da177e4 | 2719 | |
8343c89c KH |
2720 | /******************************************************************* |
2721 | cirrusfb_RectFill() | |
1da177e4 | 2722 | |
8343c89c KH |
2723 | perform accelerated rectangle fill |
2724 | ********************************************************************/ | |
1da177e4 | 2725 | |
8343c89c KH |
2726 | static void cirrusfb_RectFill(u8 __iomem *regbase, int bits_per_pixel, |
2727 | u_short x, u_short y, u_short width, u_short height, | |
9e848062 KH |
2728 | u32 fg_color, u32 bg_color, u_short line_length, |
2729 | u_char blitmode) | |
8343c89c KH |
2730 | { |
2731 | u_long ndest = (y * line_length) + x; | |
2732 | u_char op; | |
1da177e4 | 2733 | |
8343c89c | 2734 | cirrusfb_WaitBLT(regbase); |
1da177e4 LT |
2735 | |
2736 | /* This is a ColorExpand Blt, using the */ | |
2737 | /* same color for foreground and background */ | |
9e848062 KH |
2738 | vga_wgfx(regbase, VGA_GFX_SR_VALUE, bg_color); |
2739 | vga_wgfx(regbase, VGA_GFX_SR_ENABLE, fg_color); | |
1da177e4 | 2740 | |
9e848062 | 2741 | op = 0x80; |
8343c89c | 2742 | if (bits_per_pixel >= 16) { |
9e848062 KH |
2743 | vga_wgfx(regbase, CL_GR10, bg_color >> 8); |
2744 | vga_wgfx(regbase, CL_GR11, fg_color >> 8); | |
2745 | op = 0x90; | |
8343c89c | 2746 | } |
7cade31c | 2747 | if (bits_per_pixel >= 24) { |
9e848062 KH |
2748 | vga_wgfx(regbase, CL_GR12, bg_color >> 16); |
2749 | vga_wgfx(regbase, CL_GR13, fg_color >> 16); | |
7cade31c KH |
2750 | op = 0xa0; |
2751 | } | |
2752 | if (bits_per_pixel == 32) { | |
9e848062 KH |
2753 | vga_wgfx(regbase, CL_GR14, bg_color >> 24); |
2754 | vga_wgfx(regbase, CL_GR15, fg_color >> 24); | |
2755 | op = 0xb0; | |
1da177e4 | 2756 | } |
8343c89c | 2757 | cirrusfb_set_blitter(regbase, width - 1, height - 1, |
9e848062 | 2758 | 0, ndest, op | blitmode, line_length); |
1da177e4 LT |
2759 | } |
2760 | ||
1da177e4 LT |
2761 | /************************************************************************** |
2762 | * bestclock() - determine closest possible clock lower(?) than the | |
2763 | * desired pixel clock | |
2764 | **************************************************************************/ | |
dafa32c5 | 2765 | static void bestclock(long freq, int *nom, int *den, int *div) |
1da177e4 | 2766 | { |
dafa32c5 KH |
2767 | int n, d; |
2768 | long h, diff; | |
1da177e4 | 2769 | |
8503df65 KH |
2770 | assert(nom != NULL); |
2771 | assert(den != NULL); | |
2772 | assert(div != NULL); | |
1da177e4 LT |
2773 | |
2774 | *nom = 0; | |
2775 | *den = 0; | |
2776 | *div = 0; | |
2777 | ||
1da177e4 LT |
2778 | if (freq < 8000) |
2779 | freq = 8000; | |
2780 | ||
dafa32c5 | 2781 | diff = freq; |
1da177e4 LT |
2782 | |
2783 | for (n = 32; n < 128; n++) { | |
7528f543 KH |
2784 | int s = 0; |
2785 | ||
dafa32c5 | 2786 | d = (14318 * n) / freq; |
1da177e4 | 2787 | if ((d >= 7) && (d <= 63)) { |
7528f543 KH |
2788 | int temp = d; |
2789 | ||
2790 | if (temp > 31) { | |
2791 | s = 1; | |
2792 | temp >>= 1; | |
2793 | } | |
2794 | h = ((14318 * n) / temp) >> s; | |
dafa32c5 KH |
2795 | h = h > freq ? h - freq : freq - h; |
2796 | if (h < diff) { | |
2797 | diff = h; | |
1da177e4 | 2798 | *nom = n; |
7528f543 KH |
2799 | *den = temp; |
2800 | *div = s; | |
1da177e4 LT |
2801 | } |
2802 | } | |
7528f543 | 2803 | d++; |
1da177e4 | 2804 | if ((d >= 7) && (d <= 63)) { |
7528f543 KH |
2805 | if (d > 31) { |
2806 | s = 1; | |
2807 | d >>= 1; | |
2808 | } | |
2809 | h = ((14318 * n) / d) >> s; | |
dafa32c5 KH |
2810 | h = h > freq ? h - freq : freq - h; |
2811 | if (h < diff) { | |
2812 | diff = h; | |
1da177e4 | 2813 | *nom = n; |
7528f543 KH |
2814 | *den = d; |
2815 | *div = s; | |
1da177e4 LT |
2816 | } |
2817 | } | |
2818 | } | |
1da177e4 LT |
2819 | } |
2820 | ||
1da177e4 LT |
2821 | /* ------------------------------------------------------------------------- |
2822 | * | |
2823 | * debugging functions | |
2824 | * | |
2825 | * ------------------------------------------------------------------------- | |
2826 | */ | |
2827 | ||
2828 | #ifdef CIRRUSFB_DEBUG | |
2829 | ||
1da177e4 LT |
2830 | /** |
2831 | * cirrusfb_dbg_print_regs | |
2832 | * @base: If using newmmio, the newmmio base address, otherwise %NULL | |
2833 | * @reg_class: type of registers to read: %CRT, or %SEQ | |
2834 | * | |
2835 | * DESCRIPTION: | |
2836 | * Dumps the given list of VGA CRTC registers. If @base is %NULL, | |
2837 | * old-style I/O ports are queried for information, otherwise MMIO is | |
2838 | * used at the given @base address to query the information. | |
2839 | */ | |
2840 | ||
75ed3a17 KH |
2841 | static void cirrusfb_dbg_print_regs(struct fb_info *info, |
2842 | caddr_t regbase, | |
2843 | enum cirrusfb_dbg_reg_class reg_class, ...) | |
1da177e4 LT |
2844 | { |
2845 | va_list list; | |
2846 | unsigned char val = 0; | |
2847 | unsigned reg; | |
2848 | char *name; | |
2849 | ||
8503df65 | 2850 | va_start(list, reg_class); |
1da177e4 | 2851 | |
8503df65 | 2852 | name = va_arg(list, char *); |
1da177e4 | 2853 | while (name != NULL) { |
8503df65 | 2854 | reg = va_arg(list, int); |
1da177e4 LT |
2855 | |
2856 | switch (reg_class) { | |
2857 | case CRT: | |
8503df65 | 2858 | val = vga_rcrt(regbase, (unsigned char) reg); |
1da177e4 LT |
2859 | break; |
2860 | case SEQ: | |
8503df65 | 2861 | val = vga_rseq(regbase, (unsigned char) reg); |
1da177e4 LT |
2862 | break; |
2863 | default: | |
2864 | /* should never occur */ | |
c930faae | 2865 | assert(false); |
1da177e4 LT |
2866 | break; |
2867 | } | |
2868 | ||
75ed3a17 | 2869 | dev_dbg(info->device, "%8s = 0x%02X\n", name, val); |
1da177e4 | 2870 | |
8503df65 | 2871 | name = va_arg(list, char *); |
1da177e4 LT |
2872 | } |
2873 | ||
8503df65 | 2874 | va_end(list); |
1da177e4 LT |
2875 | } |
2876 | ||
1da177e4 LT |
2877 | /** |
2878 | * cirrusfb_dbg_reg_dump | |
2879 | * @base: If using newmmio, the newmmio base address, otherwise %NULL | |
2880 | * | |
2881 | * DESCRIPTION: | |
2882 | * Dumps a list of interesting VGA and CIRRUSFB registers. If @base is %NULL, | |
2883 | * old-style I/O ports are queried for information, otherwise MMIO is | |
2884 | * used at the given @base address to query the information. | |
2885 | */ | |
2886 | ||
75ed3a17 | 2887 | static void cirrusfb_dbg_reg_dump(struct fb_info *info, caddr_t regbase) |
1da177e4 | 2888 | { |
75ed3a17 | 2889 | dev_dbg(info->device, "VGA CRTC register dump:\n"); |
1da177e4 | 2890 | |
75ed3a17 | 2891 | cirrusfb_dbg_print_regs(info, regbase, CRT, |
1da177e4 LT |
2892 | "CR00", 0x00, |
2893 | "CR01", 0x01, | |
2894 | "CR02", 0x02, | |
2895 | "CR03", 0x03, | |
2896 | "CR04", 0x04, | |
2897 | "CR05", 0x05, | |
2898 | "CR06", 0x06, | |
2899 | "CR07", 0x07, | |
2900 | "CR08", 0x08, | |
2901 | "CR09", 0x09, | |
2902 | "CR0A", 0x0A, | |
2903 | "CR0B", 0x0B, | |
2904 | "CR0C", 0x0C, | |
2905 | "CR0D", 0x0D, | |
2906 | "CR0E", 0x0E, | |
2907 | "CR0F", 0x0F, | |
2908 | "CR10", 0x10, | |
2909 | "CR11", 0x11, | |
2910 | "CR12", 0x12, | |
2911 | "CR13", 0x13, | |
2912 | "CR14", 0x14, | |
2913 | "CR15", 0x15, | |
2914 | "CR16", 0x16, | |
2915 | "CR17", 0x17, | |
2916 | "CR18", 0x18, | |
2917 | "CR22", 0x22, | |
2918 | "CR24", 0x24, | |
2919 | "CR26", 0x26, | |
2920 | "CR2D", 0x2D, | |
2921 | "CR2E", 0x2E, | |
2922 | "CR2F", 0x2F, | |
2923 | "CR30", 0x30, | |
2924 | "CR31", 0x31, | |
2925 | "CR32", 0x32, | |
2926 | "CR33", 0x33, | |
2927 | "CR34", 0x34, | |
2928 | "CR35", 0x35, | |
2929 | "CR36", 0x36, | |
2930 | "CR37", 0x37, | |
2931 | "CR38", 0x38, | |
2932 | "CR39", 0x39, | |
2933 | "CR3A", 0x3A, | |
2934 | "CR3B", 0x3B, | |
2935 | "CR3C", 0x3C, | |
2936 | "CR3D", 0x3D, | |
2937 | "CR3E", 0x3E, | |
2938 | "CR3F", 0x3F, | |
2939 | NULL); | |
2940 | ||
75ed3a17 | 2941 | dev_dbg(info->device, "\n"); |
1da177e4 | 2942 | |
75ed3a17 | 2943 | dev_dbg(info->device, "VGA SEQ register dump:\n"); |
1da177e4 | 2944 | |
75ed3a17 | 2945 | cirrusfb_dbg_print_regs(info, regbase, SEQ, |
1da177e4 LT |
2946 | "SR00", 0x00, |
2947 | "SR01", 0x01, | |
2948 | "SR02", 0x02, | |
2949 | "SR03", 0x03, | |
2950 | "SR04", 0x04, | |
2951 | "SR08", 0x08, | |
2952 | "SR09", 0x09, | |
2953 | "SR0A", 0x0A, | |
2954 | "SR0B", 0x0B, | |
2955 | "SR0D", 0x0D, | |
2956 | "SR10", 0x10, | |
2957 | "SR11", 0x11, | |
2958 | "SR12", 0x12, | |
2959 | "SR13", 0x13, | |
2960 | "SR14", 0x14, | |
2961 | "SR15", 0x15, | |
2962 | "SR16", 0x16, | |
2963 | "SR17", 0x17, | |
2964 | "SR18", 0x18, | |
2965 | "SR19", 0x19, | |
2966 | "SR1A", 0x1A, | |
2967 | "SR1B", 0x1B, | |
2968 | "SR1C", 0x1C, | |
2969 | "SR1D", 0x1D, | |
2970 | "SR1E", 0x1E, | |
2971 | "SR1F", 0x1F, | |
2972 | NULL); | |
2973 | ||
75ed3a17 | 2974 | dev_dbg(info->device, "\n"); |
1da177e4 LT |
2975 | } |
2976 | ||
2977 | #endif /* CIRRUSFB_DEBUG */ | |
2978 |