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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/delay.h> |
43 | #include <linux/fb.h> | |
44 | #include <linux/init.h> | |
1da177e4 LT |
45 | #include <asm/pgtable.h> |
46 | ||
47 | #ifdef CONFIG_ZORRO | |
48 | #include <linux/zorro.h> | |
49 | #endif | |
50 | #ifdef CONFIG_PCI | |
51 | #include <linux/pci.h> | |
52 | #endif | |
53 | #ifdef CONFIG_AMIGA | |
54 | #include <asm/amigahw.h> | |
55 | #endif | |
1da177e4 | 56 | |
0ff1edee KH |
57 | #include <video/vga.h> |
58 | #include <video/cirrus.h> | |
1da177e4 | 59 | |
1da177e4 LT |
60 | /***************************************************************** |
61 | * | |
62 | * debugging and utility macros | |
63 | * | |
64 | */ | |
65 | ||
1da177e4 LT |
66 | /* disable runtime assertions? */ |
67 | /* #define CIRRUSFB_NDEBUG */ | |
68 | ||
1da177e4 LT |
69 | /* debugging assertions */ |
70 | #ifndef CIRRUSFB_NDEBUG | |
71 | #define assert(expr) \ | |
8503df65 KH |
72 | if (!(expr)) { \ |
73 | printk("Assertion failed! %s,%s,%s,line=%d\n", \ | |
5ae12170 | 74 | #expr, __FILE__, __func__, __LINE__); \ |
8503df65 | 75 | } |
1da177e4 LT |
76 | #else |
77 | #define assert(expr) | |
78 | #endif | |
79 | ||
8503df65 | 80 | #define MB_ (1024 * 1024) |
1da177e4 | 81 | |
1da177e4 LT |
82 | /***************************************************************** |
83 | * | |
84 | * chipset information | |
85 | * | |
86 | */ | |
87 | ||
88 | /* board types */ | |
7345de32 | 89 | enum cirrus_board { |
1da177e4 | 90 | BT_NONE = 0, |
7cade31c KH |
91 | BT_SD64, /* GD5434 */ |
92 | BT_PICCOLO, /* GD5426 */ | |
93 | BT_PICASSO, /* GD5426 or GD5428 */ | |
94 | BT_SPECTRUM, /* GD5426 or GD5428 */ | |
1da177e4 LT |
95 | BT_PICASSO4, /* GD5446 */ |
96 | BT_ALPINE, /* GD543x/4x */ | |
97 | BT_GD5480, | |
78d780e0 KH |
98 | BT_LAGUNA, /* GD5462/64 */ |
99 | BT_LAGUNAB, /* GD5465 */ | |
7345de32 | 100 | }; |
1da177e4 | 101 | |
1da177e4 LT |
102 | /* |
103 | * per-board-type information, used for enumerating and abstracting | |
104 | * chip-specific information | |
7345de32 | 105 | * NOTE: MUST be in the same order as enum cirrus_board in order to |
1da177e4 LT |
106 | * use direct indexing on this array |
107 | * NOTE: '__initdata' cannot be used as some of this info | |
108 | * is required at runtime. Maybe separate into an init-only and | |
109 | * a run-time table? | |
110 | */ | |
111 | static const struct cirrusfb_board_info_rec { | |
112 | char *name; /* ASCII name of chipset */ | |
113 | long maxclock[5]; /* maximum video clock */ | |
114 | /* for 1/4bpp, 8bpp 15/16bpp, 24bpp, 32bpp - numbers from xorg code */ | |
c930faae RK |
115 | bool init_sr07 : 1; /* init SR07 during init_vgachip() */ |
116 | bool init_sr1f : 1; /* write SR1F during init_vgachip() */ | |
8503df65 KH |
117 | /* construct bit 19 of screen start address */ |
118 | bool scrn_start_bit19 : 1; | |
1da177e4 LT |
119 | |
120 | /* initial SR07 value, then for each mode */ | |
121 | unsigned char sr07; | |
122 | unsigned char sr07_1bpp; | |
123 | unsigned char sr07_1bpp_mux; | |
124 | unsigned char sr07_8bpp; | |
125 | unsigned char sr07_8bpp_mux; | |
126 | ||
127 | unsigned char sr1f; /* SR1F VGA initial register value */ | |
128 | } cirrusfb_board_info[] = { | |
129 | [BT_SD64] = { | |
130 | .name = "CL SD64", | |
131 | .maxclock = { | |
132 | /* guess */ | |
133 | /* the SD64/P4 have a higher max. videoclock */ | |
75ed3a17 | 134 | 135100, 135100, 85500, 85500, 0 |
1da177e4 | 135 | }, |
c930faae RK |
136 | .init_sr07 = true, |
137 | .init_sr1f = true, | |
138 | .scrn_start_bit19 = true, | |
1da177e4 LT |
139 | .sr07 = 0xF0, |
140 | .sr07_1bpp = 0xF0, | |
df3aafd5 | 141 | .sr07_1bpp_mux = 0xF6, |
1da177e4 | 142 | .sr07_8bpp = 0xF1, |
df3aafd5 | 143 | .sr07_8bpp_mux = 0xF7, |
8f19e15b | 144 | .sr1f = 0x1E |
1da177e4 LT |
145 | }, |
146 | [BT_PICCOLO] = { | |
147 | .name = "CL Piccolo", | |
148 | .maxclock = { | |
149 | /* guess */ | |
150 | 90000, 90000, 90000, 90000, 90000 | |
151 | }, | |
c930faae RK |
152 | .init_sr07 = true, |
153 | .init_sr1f = true, | |
154 | .scrn_start_bit19 = false, | |
1da177e4 LT |
155 | .sr07 = 0x80, |
156 | .sr07_1bpp = 0x80, | |
157 | .sr07_8bpp = 0x81, | |
158 | .sr1f = 0x22 | |
159 | }, | |
160 | [BT_PICASSO] = { | |
161 | .name = "CL Picasso", | |
162 | .maxclock = { | |
163 | /* guess */ | |
164 | 90000, 90000, 90000, 90000, 90000 | |
165 | }, | |
c930faae RK |
166 | .init_sr07 = true, |
167 | .init_sr1f = true, | |
168 | .scrn_start_bit19 = false, | |
1da177e4 LT |
169 | .sr07 = 0x20, |
170 | .sr07_1bpp = 0x20, | |
171 | .sr07_8bpp = 0x21, | |
172 | .sr1f = 0x22 | |
173 | }, | |
174 | [BT_SPECTRUM] = { | |
175 | .name = "CL Spectrum", | |
176 | .maxclock = { | |
177 | /* guess */ | |
178 | 90000, 90000, 90000, 90000, 90000 | |
179 | }, | |
c930faae RK |
180 | .init_sr07 = true, |
181 | .init_sr1f = true, | |
182 | .scrn_start_bit19 = false, | |
1da177e4 LT |
183 | .sr07 = 0x80, |
184 | .sr07_1bpp = 0x80, | |
185 | .sr07_8bpp = 0x81, | |
186 | .sr1f = 0x22 | |
187 | }, | |
188 | [BT_PICASSO4] = { | |
189 | .name = "CL Picasso4", | |
190 | .maxclock = { | |
191 | 135100, 135100, 85500, 85500, 0 | |
192 | }, | |
c930faae RK |
193 | .init_sr07 = true, |
194 | .init_sr1f = false, | |
195 | .scrn_start_bit19 = true, | |
527410ff KH |
196 | .sr07 = 0xA0, |
197 | .sr07_1bpp = 0xA0, | |
198 | .sr07_1bpp_mux = 0xA6, | |
199 | .sr07_8bpp = 0xA1, | |
200 | .sr07_8bpp_mux = 0xA7, | |
1da177e4 LT |
201 | .sr1f = 0 |
202 | }, | |
203 | [BT_ALPINE] = { | |
204 | .name = "CL Alpine", | |
205 | .maxclock = { | |
206 | /* for the GD5430. GD5446 can do more... */ | |
207 | 85500, 85500, 50000, 28500, 0 | |
208 | }, | |
c930faae RK |
209 | .init_sr07 = true, |
210 | .init_sr1f = true, | |
211 | .scrn_start_bit19 = true, | |
1da177e4 | 212 | .sr07 = 0xA0, |
527410ff KH |
213 | .sr07_1bpp = 0xA0, |
214 | .sr07_1bpp_mux = 0xA6, | |
1da177e4 LT |
215 | .sr07_8bpp = 0xA1, |
216 | .sr07_8bpp_mux = 0xA7, | |
217 | .sr1f = 0x1C | |
218 | }, | |
219 | [BT_GD5480] = { | |
220 | .name = "CL GD5480", | |
221 | .maxclock = { | |
222 | 135100, 200000, 200000, 135100, 135100 | |
223 | }, | |
c930faae RK |
224 | .init_sr07 = true, |
225 | .init_sr1f = true, | |
226 | .scrn_start_bit19 = true, | |
1da177e4 LT |
227 | .sr07 = 0x10, |
228 | .sr07_1bpp = 0x11, | |
229 | .sr07_8bpp = 0x11, | |
230 | .sr1f = 0x1C | |
231 | }, | |
232 | [BT_LAGUNA] = { | |
233 | .name = "CL Laguna", | |
234 | .maxclock = { | |
78d780e0 KH |
235 | /* taken from X11 code */ |
236 | 170000, 170000, 170000, 170000, 135100, | |
237 | }, | |
238 | .init_sr07 = false, | |
239 | .init_sr1f = false, | |
240 | .scrn_start_bit19 = true, | |
241 | }, | |
242 | [BT_LAGUNAB] = { | |
243 | .name = "CL Laguna AGP", | |
244 | .maxclock = { | |
245 | /* taken from X11 code */ | |
246 | 170000, 250000, 170000, 170000, 135100, | |
1da177e4 | 247 | }, |
c930faae RK |
248 | .init_sr07 = false, |
249 | .init_sr1f = false, | |
250 | .scrn_start_bit19 = true, | |
1da177e4 LT |
251 | } |
252 | }; | |
253 | ||
1da177e4 LT |
254 | #ifdef CONFIG_PCI |
255 | #define CHIP(id, btype) \ | |
4153812f | 256 | { PCI_VENDOR_ID_CIRRUS, id, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (btype) } |
1da177e4 LT |
257 | |
258 | static struct pci_device_id cirrusfb_pci_table[] = { | |
8503df65 | 259 | CHIP(PCI_DEVICE_ID_CIRRUS_5436, BT_ALPINE), |
df3aafd5 KH |
260 | CHIP(PCI_DEVICE_ID_CIRRUS_5434_8, BT_SD64), |
261 | CHIP(PCI_DEVICE_ID_CIRRUS_5434_4, BT_SD64), | |
8503df65 KH |
262 | CHIP(PCI_DEVICE_ID_CIRRUS_5430, BT_ALPINE), /* GD-5440 is same id */ |
263 | CHIP(PCI_DEVICE_ID_CIRRUS_7543, BT_ALPINE), | |
264 | CHIP(PCI_DEVICE_ID_CIRRUS_7548, BT_ALPINE), | |
265 | CHIP(PCI_DEVICE_ID_CIRRUS_5480, BT_GD5480), /* MacPicasso likely */ | |
266 | CHIP(PCI_DEVICE_ID_CIRRUS_5446, BT_PICASSO4), /* Picasso 4 is 5446 */ | |
267 | CHIP(PCI_DEVICE_ID_CIRRUS_5462, BT_LAGUNA), /* CL Laguna */ | |
268 | CHIP(PCI_DEVICE_ID_CIRRUS_5464, BT_LAGUNA), /* CL Laguna 3D */ | |
78d780e0 | 269 | CHIP(PCI_DEVICE_ID_CIRRUS_5465, BT_LAGUNAB), /* CL Laguna 3DA*/ |
1da177e4 LT |
270 | { 0, } |
271 | }; | |
272 | MODULE_DEVICE_TABLE(pci, cirrusfb_pci_table); | |
273 | #undef CHIP | |
274 | #endif /* CONFIG_PCI */ | |
275 | ||
1da177e4 | 276 | #ifdef CONFIG_ZORRO |
0e0d1336 GU |
277 | struct zorrocl { |
278 | enum cirrus_board type; /* Board type */ | |
279 | u32 regoffset; /* Offset of registers in first Zorro device */ | |
280 | u32 ramsize; /* Size of video RAM in first Zorro device */ | |
281 | /* If zero, use autoprobe on RAM device */ | |
282 | u32 ramoffset; /* Offset of video RAM in first Zorro device */ | |
283 | zorro_id ramid; /* Zorro ID of RAM device */ | |
17bdf489 | 284 | zorro_id ramid2; /* Zorro ID of optional second RAM device */ |
0e0d1336 GU |
285 | }; |
286 | ||
48c68c4f | 287 | static const struct zorrocl zcl_sd64 = { |
0e0d1336 GU |
288 | .type = BT_SD64, |
289 | .ramid = ZORRO_PROD_HELFRICH_SD64_RAM, | |
290 | }; | |
291 | ||
48c68c4f | 292 | static const struct zorrocl zcl_piccolo = { |
0e0d1336 GU |
293 | .type = BT_PICCOLO, |
294 | .ramid = ZORRO_PROD_HELFRICH_PICCOLO_RAM, | |
295 | }; | |
296 | ||
48c68c4f | 297 | static const struct zorrocl zcl_picasso = { |
0e0d1336 GU |
298 | .type = BT_PICASSO, |
299 | .ramid = ZORRO_PROD_VILLAGE_TRONIC_PICASSO_II_II_PLUS_RAM, | |
300 | }; | |
301 | ||
48c68c4f | 302 | static const struct zorrocl zcl_spectrum = { |
0e0d1336 GU |
303 | .type = BT_SPECTRUM, |
304 | .ramid = ZORRO_PROD_GVP_EGS_28_24_SPECTRUM_RAM, | |
305 | }; | |
306 | ||
48c68c4f | 307 | static const struct zorrocl zcl_picasso4_z3 = { |
0e0d1336 GU |
308 | .type = BT_PICASSO4, |
309 | .regoffset = 0x00600000, | |
310 | .ramsize = 4 * MB_, | |
e78bb882 | 311 | .ramoffset = 0x01000000, /* 0x02000000 for 64 MiB boards */ |
0e0d1336 GU |
312 | }; |
313 | ||
48c68c4f | 314 | static const struct zorrocl zcl_picasso4_z2 = { |
17bdf489 GU |
315 | .type = BT_PICASSO4, |
316 | .regoffset = 0x10000, | |
317 | .ramid = ZORRO_PROD_VILLAGE_TRONIC_PICASSO_IV_Z2_RAM1, | |
318 | .ramid2 = ZORRO_PROD_VILLAGE_TRONIC_PICASSO_IV_Z2_RAM2, | |
319 | }; | |
320 | ||
0e0d1336 | 321 | |
48c68c4f | 322 | static const struct zorro_device_id cirrusfb_zorro_table[] = { |
1da177e4 | 323 | { |
0e0d1336 GU |
324 | .id = ZORRO_PROD_HELFRICH_SD64_REG, |
325 | .driver_data = (unsigned long)&zcl_sd64, | |
1da177e4 | 326 | }, { |
0e0d1336 GU |
327 | .id = ZORRO_PROD_HELFRICH_PICCOLO_REG, |
328 | .driver_data = (unsigned long)&zcl_piccolo, | |
1da177e4 | 329 | }, { |
0e0d1336 GU |
330 | .id = ZORRO_PROD_VILLAGE_TRONIC_PICASSO_II_II_PLUS_REG, |
331 | .driver_data = (unsigned long)&zcl_picasso, | |
1da177e4 | 332 | }, { |
0e0d1336 GU |
333 | .id = ZORRO_PROD_GVP_EGS_28_24_SPECTRUM_REG, |
334 | .driver_data = (unsigned long)&zcl_spectrum, | |
1da177e4 LT |
335 | }, { |
336 | .id = ZORRO_PROD_VILLAGE_TRONIC_PICASSO_IV_Z3, | |
0e0d1336 | 337 | .driver_data = (unsigned long)&zcl_picasso4_z3, |
17bdf489 GU |
338 | }, { |
339 | .id = ZORRO_PROD_VILLAGE_TRONIC_PICASSO_IV_Z2_REG, | |
340 | .driver_data = (unsigned long)&zcl_picasso4_z2, | |
1da177e4 LT |
341 | }, |
342 | { 0 } | |
343 | }; | |
bf54a2b3 | 344 | MODULE_DEVICE_TABLE(zorro, cirrusfb_zorro_table); |
1da177e4 LT |
345 | #endif /* CONFIG_ZORRO */ |
346 | ||
1da177e4 | 347 | #ifdef CIRRUSFB_DEBUG |
7345de32 | 348 | enum cirrusfb_dbg_reg_class { |
8503df65 KH |
349 | CRT, |
350 | SEQ | |
7345de32 | 351 | }; |
8503df65 | 352 | #endif /* CIRRUSFB_DEBUG */ |
1da177e4 LT |
353 | |
354 | /* info about board */ | |
355 | struct cirrusfb_info { | |
1da177e4 | 356 | u8 __iomem *regbase; |
6e30fc08 | 357 | u8 __iomem *laguna_mmio; |
7345de32 | 358 | enum cirrus_board btype; |
1da177e4 LT |
359 | unsigned char SFR; /* Shadow of special function register */ |
360 | ||
48c329e9 | 361 | int multiplexing; |
df3aafd5 | 362 | int doubleVCLK; |
1da177e4 | 363 | int blank_mode; |
64beab14 | 364 | u32 pseudo_palette[16]; |
1da177e4 | 365 | |
9199ec5c | 366 | void (*unmap)(struct fb_info *info); |
1da177e4 LT |
367 | }; |
368 | ||
48c68c4f GKH |
369 | static bool noaccel; |
370 | static char *mode_option = "640x480@60"; | |
1da177e4 LT |
371 | |
372 | /****************************************************************************/ | |
373 | /**** BEGIN PROTOTYPES ******************************************************/ | |
374 | ||
1da177e4 | 375 | /*--- Interface used by the world ------------------------------------------*/ |
8503df65 KH |
376 | static int cirrusfb_pan_display(struct fb_var_screeninfo *var, |
377 | struct fb_info *info); | |
1da177e4 | 378 | |
1da177e4 | 379 | /*--- Internal routines ----------------------------------------------------*/ |
9199ec5c | 380 | static void init_vgachip(struct fb_info *info); |
8503df65 KH |
381 | static void switch_monitor(struct cirrusfb_info *cinfo, int on); |
382 | static void WGen(const struct cirrusfb_info *cinfo, | |
383 | int regnum, unsigned char val); | |
384 | static unsigned char RGen(const struct cirrusfb_info *cinfo, int regnum); | |
385 | static void AttrOn(const struct cirrusfb_info *cinfo); | |
386 | static void WHDR(const struct cirrusfb_info *cinfo, unsigned char val); | |
387 | static void WSFR(struct cirrusfb_info *cinfo, unsigned char val); | |
388 | static void WSFR2(struct cirrusfb_info *cinfo, unsigned char val); | |
389 | static void WClut(struct cirrusfb_info *cinfo, unsigned char regnum, | |
390 | unsigned char red, unsigned char green, unsigned char blue); | |
1da177e4 | 391 | #if 0 |
8503df65 KH |
392 | static void RClut(struct cirrusfb_info *cinfo, unsigned char regnum, |
393 | unsigned char *red, unsigned char *green, | |
394 | unsigned char *blue); | |
1da177e4 | 395 | #endif |
8503df65 KH |
396 | static void cirrusfb_WaitBLT(u8 __iomem *regbase); |
397 | static void cirrusfb_BitBLT(u8 __iomem *regbase, int bits_per_pixel, | |
398 | u_short curx, u_short cury, | |
399 | u_short destx, u_short desty, | |
400 | u_short width, u_short height, | |
401 | u_short line_length); | |
402 | static void cirrusfb_RectFill(u8 __iomem *regbase, int bits_per_pixel, | |
403 | u_short x, u_short y, | |
404 | u_short width, u_short height, | |
9e848062 KH |
405 | u32 fg_color, u32 bg_color, |
406 | u_short line_length, u_char blitmode); | |
8503df65 | 407 | |
dafa32c5 | 408 | static void bestclock(long freq, int *nom, int *den, int *div); |
1da177e4 LT |
409 | |
410 | #ifdef CIRRUSFB_DEBUG | |
75ed3a17 KH |
411 | static void cirrusfb_dbg_reg_dump(struct fb_info *info, caddr_t regbase); |
412 | static void cirrusfb_dbg_print_regs(struct fb_info *info, | |
413 | caddr_t regbase, | |
7345de32 | 414 | enum cirrusfb_dbg_reg_class reg_class, ...); |
1da177e4 LT |
415 | #endif /* CIRRUSFB_DEBUG */ |
416 | ||
417 | /*** END PROTOTYPES ********************************************************/ | |
418 | /*****************************************************************************/ | |
419 | /*** BEGIN Interface Used by the World ***************************************/ | |
420 | ||
78d780e0 KH |
421 | static inline int is_laguna(const struct cirrusfb_info *cinfo) |
422 | { | |
423 | return cinfo->btype == BT_LAGUNA || cinfo->btype == BT_LAGUNAB; | |
424 | } | |
425 | ||
8503df65 | 426 | static int opencount; |
1da177e4 LT |
427 | |
428 | /*--- Open /dev/fbx ---------------------------------------------------------*/ | |
8503df65 | 429 | static int cirrusfb_open(struct fb_info *info, int user) |
1da177e4 LT |
430 | { |
431 | if (opencount++ == 0) | |
8503df65 | 432 | switch_monitor(info->par, 1); |
1da177e4 LT |
433 | return 0; |
434 | } | |
435 | ||
436 | /*--- Close /dev/fbx --------------------------------------------------------*/ | |
8503df65 | 437 | static int cirrusfb_release(struct fb_info *info, int user) |
1da177e4 LT |
438 | { |
439 | if (--opencount == 0) | |
8503df65 | 440 | switch_monitor(info->par, 0); |
1da177e4 LT |
441 | return 0; |
442 | } | |
443 | ||
444 | /**** END Interface used by the World *************************************/ | |
445 | /****************************************************************************/ | |
446 | /**** BEGIN Hardware specific Routines **************************************/ | |
447 | ||
486ff387 | 448 | /* Check if the MCLK is not a better clock source */ |
75ed3a17 | 449 | static int cirrusfb_check_mclk(struct fb_info *info, long freq) |
1da177e4 | 450 | { |
75ed3a17 | 451 | struct cirrusfb_info *cinfo = info->par; |
486ff387 | 452 | long mclk = vga_rseq(cinfo->regbase, CL_SEQR1F) & 0x3f; |
1da177e4 | 453 | |
486ff387 KH |
454 | /* Read MCLK value */ |
455 | mclk = (14318 * mclk) >> 3; | |
75ed3a17 | 456 | dev_dbg(info->device, "Read MCLK of %ld kHz\n", mclk); |
1da177e4 LT |
457 | |
458 | /* Determine if we should use MCLK instead of VCLK, and if so, what we | |
486ff387 KH |
459 | * should divide it by to get VCLK |
460 | */ | |
461 | ||
462 | if (abs(freq - mclk) < 250) { | |
75ed3a17 | 463 | dev_dbg(info->device, "Using VCLK = MCLK\n"); |
486ff387 KH |
464 | return 1; |
465 | } else if (abs(freq - (mclk / 2)) < 250) { | |
75ed3a17 | 466 | dev_dbg(info->device, "Using VCLK = MCLK/2\n"); |
486ff387 | 467 | return 2; |
1da177e4 LT |
468 | } |
469 | ||
486ff387 | 470 | return 0; |
1da177e4 LT |
471 | } |
472 | ||
99a45847 KH |
473 | static int cirrusfb_check_pixclock(const struct fb_var_screeninfo *var, |
474 | struct fb_info *info) | |
475 | { | |
476 | long freq; | |
477 | long maxclock; | |
478 | struct cirrusfb_info *cinfo = info->par; | |
479 | unsigned maxclockidx = var->bits_per_pixel >> 3; | |
480 | ||
481 | /* convert from ps to kHz */ | |
482 | freq = PICOS2KHZ(var->pixclock); | |
483 | ||
484 | dev_dbg(info->device, "desired pixclock: %ld kHz\n", freq); | |
485 | ||
486 | maxclock = cirrusfb_board_info[cinfo->btype].maxclock[maxclockidx]; | |
487 | cinfo->multiplexing = 0; | |
488 | ||
489 | /* If the frequency is greater than we can support, we might be able | |
490 | * to use multiplexing for the video mode */ | |
491 | if (freq > maxclock) { | |
dd14f71c KH |
492 | dev_err(info->device, |
493 | "Frequency greater than maxclock (%ld kHz)\n", | |
494 | maxclock); | |
495 | return -EINVAL; | |
496 | } | |
497 | /* | |
498 | * Additional constraint: 8bpp uses DAC clock doubling to allow maximum | |
499 | * pixel clock | |
500 | */ | |
501 | if (var->bits_per_pixel == 8) { | |
99a45847 KH |
502 | switch (cinfo->btype) { |
503 | case BT_ALPINE: | |
8f19e15b | 504 | case BT_SD64: |
dd14f71c KH |
505 | case BT_PICASSO4: |
506 | if (freq > 85500) | |
507 | cinfo->multiplexing = 1; | |
508 | break; | |
99a45847 | 509 | case BT_GD5480: |
dd14f71c KH |
510 | if (freq > 135100) |
511 | cinfo->multiplexing = 1; | |
99a45847 KH |
512 | break; |
513 | ||
514 | default: | |
8f19e15b | 515 | break; |
99a45847 KH |
516 | } |
517 | } | |
df3aafd5 KH |
518 | |
519 | /* If we have a 1MB 5434, we need to put ourselves in a mode where | |
99a45847 | 520 | * the VCLK is double the pixel clock. */ |
df3aafd5 KH |
521 | cinfo->doubleVCLK = 0; |
522 | if (cinfo->btype == BT_SD64 && info->fix.smem_len <= MB_ && | |
523 | var->bits_per_pixel == 16) { | |
524 | cinfo->doubleVCLK = 1; | |
99a45847 | 525 | } |
df3aafd5 | 526 | |
99a45847 KH |
527 | return 0; |
528 | } | |
529 | ||
1da177e4 LT |
530 | static int cirrusfb_check_var(struct fb_var_screeninfo *var, |
531 | struct fb_info *info) | |
532 | { | |
09a2910e KH |
533 | int yres; |
534 | /* memory size in pixels */ | |
535 | unsigned pixels = info->screen_size * 8 / var->bits_per_pixel; | |
614c0dc9 | 536 | struct cirrusfb_info *cinfo = info->par; |
1da177e4 | 537 | |
1da177e4 LT |
538 | switch (var->bits_per_pixel) { |
539 | case 1: | |
540 | var->red.offset = 0; | |
541 | var->red.length = 1; | |
060b6002 KH |
542 | var->green = var->red; |
543 | var->blue = var->red; | |
1da177e4 LT |
544 | break; |
545 | ||
546 | case 8: | |
547 | var->red.offset = 0; | |
99a45847 | 548 | var->red.length = 8; |
060b6002 KH |
549 | var->green = var->red; |
550 | var->blue = var->red; | |
1da177e4 LT |
551 | break; |
552 | ||
553 | case 16: | |
933ee711 PB |
554 | var->red.offset = 11; |
555 | var->green.offset = 5; | |
556 | var->blue.offset = 0; | |
1da177e4 | 557 | var->red.length = 5; |
c4dec396 | 558 | var->green.length = 6; |
1da177e4 LT |
559 | var->blue.length = 5; |
560 | break; | |
561 | ||
7cade31c | 562 | case 24: |
933ee711 PB |
563 | var->red.offset = 16; |
564 | var->green.offset = 8; | |
565 | var->blue.offset = 0; | |
1da177e4 LT |
566 | var->red.length = 8; |
567 | var->green.length = 8; | |
568 | var->blue.length = 8; | |
569 | break; | |
570 | ||
571 | default: | |
75ed3a17 KH |
572 | dev_dbg(info->device, |
573 | "Unsupported bpp size: %d\n", var->bits_per_pixel); | |
0efb2a03 | 574 | return -EINVAL; |
1da177e4 LT |
575 | } |
576 | ||
75ed3a17 KH |
577 | if (var->xres_virtual < var->xres) |
578 | var->xres_virtual = var->xres; | |
579 | /* use highest possible virtual resolution */ | |
580 | if (var->yres_virtual == -1) { | |
581 | var->yres_virtual = pixels / var->xres_virtual; | |
582 | ||
583 | dev_info(info->device, | |
584 | "virtual resolution set to maximum of %dx%d\n", | |
585 | var->xres_virtual, var->yres_virtual); | |
586 | } | |
587 | if (var->yres_virtual < var->yres) | |
588 | var->yres_virtual = var->yres; | |
589 | ||
590 | if (var->xres_virtual * var->yres_virtual > pixels) { | |
591 | dev_err(info->device, "mode %dx%dx%d rejected... " | |
592 | "virtual resolution too high to fit into video memory!\n", | |
593 | var->xres_virtual, var->yres_virtual, | |
594 | var->bits_per_pixel); | |
595 | return -EINVAL; | |
596 | } | |
597 | ||
75ed3a17 KH |
598 | /* truncate xoffset and yoffset to maximum if too high */ |
599 | if (var->xoffset > var->xres_virtual - var->xres) | |
600 | var->xoffset = var->xres_virtual - var->xres - 1; | |
601 | if (var->yoffset > var->yres_virtual - var->yres) | |
602 | var->yoffset = var->yres_virtual - var->yres - 1; | |
603 | ||
1da177e4 LT |
604 | var->red.msb_right = |
605 | var->green.msb_right = | |
606 | var->blue.msb_right = | |
607 | var->transp.offset = | |
608 | var->transp.length = | |
609 | var->transp.msb_right = 0; | |
610 | ||
611 | yres = var->yres; | |
612 | if (var->vmode & FB_VMODE_DOUBLE) | |
613 | yres *= 2; | |
614 | else if (var->vmode & FB_VMODE_INTERLACED) | |
615 | yres = (yres + 1) / 2; | |
616 | ||
617 | if (yres >= 1280) { | |
75ed3a17 | 618 | dev_err(info->device, "ERROR: VerticalTotal >= 1280; " |
8503df65 | 619 | "special treatment required! (TODO)\n"); |
1da177e4 LT |
620 | return -EINVAL; |
621 | } | |
622 | ||
99a45847 KH |
623 | if (cirrusfb_check_pixclock(var, info)) |
624 | return -EINVAL; | |
1da177e4 | 625 | |
614c0dc9 KH |
626 | if (!is_laguna(cinfo)) |
627 | var->accel_flags = FB_ACCELF_TEXT; | |
628 | ||
1da177e4 LT |
629 | return 0; |
630 | } | |
631 | ||
75ed3a17 | 632 | static void cirrusfb_set_mclk_as_source(const struct fb_info *info, int div) |
1da177e4 | 633 | { |
75ed3a17 | 634 | struct cirrusfb_info *cinfo = info->par; |
486ff387 | 635 | unsigned char old1f, old1e; |
75ed3a17 | 636 | |
8503df65 | 637 | assert(cinfo != NULL); |
486ff387 KH |
638 | old1f = vga_rseq(cinfo->regbase, CL_SEQR1F) & ~0x40; |
639 | ||
640 | if (div) { | |
75ed3a17 KH |
641 | dev_dbg(info->device, "Set %s as pixclock source.\n", |
642 | (div == 2) ? "MCLK/2" : "MCLK"); | |
486ff387 KH |
643 | old1f |= 0x40; |
644 | old1e = vga_rseq(cinfo->regbase, CL_SEQR1E) & ~0x1; | |
645 | if (div == 2) | |
646 | old1e |= 1; | |
1da177e4 | 647 | |
486ff387 | 648 | vga_wseq(cinfo->regbase, CL_SEQR1E, old1e); |
1da177e4 | 649 | } |
486ff387 | 650 | vga_wseq(cinfo->regbase, CL_SEQR1F, old1f); |
1da177e4 LT |
651 | } |
652 | ||
653 | /************************************************************************* | |
654 | cirrusfb_set_par_foo() | |
655 | ||
656 | actually writes the values for a new video mode into the hardware, | |
657 | **************************************************************************/ | |
8503df65 | 658 | static int cirrusfb_set_par_foo(struct fb_info *info) |
1da177e4 LT |
659 | { |
660 | struct cirrusfb_info *cinfo = info->par; | |
661 | struct fb_var_screeninfo *var = &info->var; | |
1da177e4 LT |
662 | u8 __iomem *regbase = cinfo->regbase; |
663 | unsigned char tmp; | |
6683e01e | 664 | int pitch; |
1da177e4 | 665 | const struct cirrusfb_board_info_rec *bi; |
9a85cf51 KH |
666 | int hdispend, hsyncstart, hsyncend, htotal; |
667 | int yres, vdispend, vsyncstart, vsyncend, vtotal; | |
dafa32c5 KH |
668 | long freq; |
669 | int nom, den, div; | |
1b48cb56 | 670 | unsigned int control = 0, format = 0, threshold = 0; |
1da177e4 | 671 | |
75ed3a17 | 672 | dev_dbg(info->device, "Requested mode: %dx%dx%d\n", |
1da177e4 | 673 | var->xres, var->yres, var->bits_per_pixel); |
1da177e4 | 674 | |
99a45847 KH |
675 | switch (var->bits_per_pixel) { |
676 | case 1: | |
677 | info->fix.line_length = var->xres_virtual / 8; | |
678 | info->fix.visual = FB_VISUAL_MONO10; | |
679 | break; | |
1da177e4 | 680 | |
99a45847 KH |
681 | case 8: |
682 | info->fix.line_length = var->xres_virtual; | |
683 | info->fix.visual = FB_VISUAL_PSEUDOCOLOR; | |
684 | break; | |
685 | ||
686 | case 16: | |
7cade31c | 687 | case 24: |
99a45847 KH |
688 | info->fix.line_length = var->xres_virtual * |
689 | var->bits_per_pixel >> 3; | |
690 | info->fix.visual = FB_VISUAL_TRUECOLOR; | |
691 | break; | |
1da177e4 | 692 | } |
99a45847 KH |
693 | info->fix.type = FB_TYPE_PACKED_PIXELS; |
694 | ||
695 | init_vgachip(info); | |
1da177e4 LT |
696 | |
697 | bi = &cirrusfb_board_info[cinfo->btype]; | |
698 | ||
9a85cf51 KH |
699 | hsyncstart = var->xres + var->right_margin; |
700 | hsyncend = hsyncstart + var->hsync_len; | |
8636a924 KH |
701 | htotal = (hsyncend + var->left_margin) / 8; |
702 | hdispend = var->xres / 8; | |
703 | hsyncstart = hsyncstart / 8; | |
704 | hsyncend = hsyncend / 8; | |
9a85cf51 | 705 | |
8636a924 KH |
706 | vdispend = var->yres; |
707 | vsyncstart = vdispend + var->lower_margin; | |
9a85cf51 KH |
708 | vsyncend = vsyncstart + var->vsync_len; |
709 | vtotal = vsyncend + var->upper_margin; | |
9a85cf51 KH |
710 | |
711 | if (var->vmode & FB_VMODE_DOUBLE) { | |
8636a924 | 712 | vdispend *= 2; |
9a85cf51 KH |
713 | vsyncstart *= 2; |
714 | vsyncend *= 2; | |
715 | vtotal *= 2; | |
716 | } else if (var->vmode & FB_VMODE_INTERLACED) { | |
8636a924 | 717 | vdispend = (vdispend + 1) / 2; |
9a85cf51 KH |
718 | vsyncstart = (vsyncstart + 1) / 2; |
719 | vsyncend = (vsyncend + 1) / 2; | |
720 | vtotal = (vtotal + 1) / 2; | |
721 | } | |
8636a924 | 722 | yres = vdispend; |
9a85cf51 KH |
723 | if (yres >= 1024) { |
724 | vtotal /= 2; | |
725 | vsyncstart /= 2; | |
726 | vsyncend /= 2; | |
727 | vdispend /= 2; | |
728 | } | |
8636a924 KH |
729 | |
730 | vdispend -= 1; | |
731 | vsyncstart -= 1; | |
732 | vsyncend -= 1; | |
733 | vtotal -= 2; | |
734 | ||
48c329e9 | 735 | if (cinfo->multiplexing) { |
9a85cf51 KH |
736 | htotal /= 2; |
737 | hsyncstart /= 2; | |
738 | hsyncend /= 2; | |
739 | hdispend /= 2; | |
740 | } | |
8636a924 KH |
741 | |
742 | htotal -= 5; | |
743 | hdispend -= 1; | |
744 | hsyncstart += 1; | |
745 | hsyncend += 1; | |
746 | ||
1da177e4 | 747 | /* unlock register VGA_CRTC_H_TOTAL..CRT7 */ |
8503df65 | 748 | vga_wcrt(regbase, VGA_CRTC_V_SYNC_END, 0x20); /* previously: 0x00) */ |
1da177e4 LT |
749 | |
750 | /* if debugging is enabled, all parameters get output before writing */ | |
75ed3a17 | 751 | dev_dbg(info->device, "CRT0: %d\n", htotal); |
9a85cf51 | 752 | vga_wcrt(regbase, VGA_CRTC_H_TOTAL, htotal); |
1da177e4 | 753 | |
75ed3a17 | 754 | dev_dbg(info->device, "CRT1: %d\n", hdispend); |
9a85cf51 | 755 | vga_wcrt(regbase, VGA_CRTC_H_DISP, hdispend); |
1da177e4 | 756 | |
75ed3a17 | 757 | dev_dbg(info->device, "CRT2: %d\n", var->xres / 8); |
9a85cf51 | 758 | vga_wcrt(regbase, VGA_CRTC_H_BLANK_START, var->xres / 8); |
1da177e4 | 759 | |
8503df65 | 760 | /* + 128: Compatible read */ |
75ed3a17 | 761 | dev_dbg(info->device, "CRT3: 128+%d\n", (htotal + 5) % 32); |
8503df65 | 762 | vga_wcrt(regbase, VGA_CRTC_H_BLANK_END, |
9a85cf51 | 763 | 128 + ((htotal + 5) % 32)); |
1da177e4 | 764 | |
75ed3a17 | 765 | dev_dbg(info->device, "CRT4: %d\n", hsyncstart); |
9a85cf51 | 766 | vga_wcrt(regbase, VGA_CRTC_H_SYNC_START, hsyncstart); |
1da177e4 | 767 | |
9a85cf51 KH |
768 | tmp = hsyncend % 32; |
769 | if ((htotal + 5) & 32) | |
1da177e4 | 770 | tmp += 128; |
75ed3a17 | 771 | dev_dbg(info->device, "CRT5: %d\n", tmp); |
8503df65 | 772 | vga_wcrt(regbase, VGA_CRTC_H_SYNC_END, tmp); |
1da177e4 | 773 | |
75ed3a17 | 774 | dev_dbg(info->device, "CRT6: %d\n", vtotal & 0xff); |
9a85cf51 | 775 | vga_wcrt(regbase, VGA_CRTC_V_TOTAL, vtotal & 0xff); |
1da177e4 LT |
776 | |
777 | tmp = 16; /* LineCompare bit #9 */ | |
9a85cf51 | 778 | if (vtotal & 256) |
1da177e4 | 779 | tmp |= 1; |
9a85cf51 | 780 | if (vdispend & 256) |
1da177e4 | 781 | tmp |= 2; |
9a85cf51 | 782 | if (vsyncstart & 256) |
1da177e4 | 783 | tmp |= 4; |
9a85cf51 | 784 | if ((vdispend + 1) & 256) |
1da177e4 | 785 | tmp |= 8; |
9a85cf51 | 786 | if (vtotal & 512) |
1da177e4 | 787 | tmp |= 32; |
9a85cf51 | 788 | if (vdispend & 512) |
1da177e4 | 789 | tmp |= 64; |
9a85cf51 | 790 | if (vsyncstart & 512) |
1da177e4 | 791 | tmp |= 128; |
75ed3a17 | 792 | dev_dbg(info->device, "CRT7: %d\n", tmp); |
8503df65 | 793 | vga_wcrt(regbase, VGA_CRTC_OVERFLOW, tmp); |
1da177e4 LT |
794 | |
795 | tmp = 0x40; /* LineCompare bit #8 */ | |
9a85cf51 | 796 | if ((vdispend + 1) & 512) |
1da177e4 LT |
797 | tmp |= 0x20; |
798 | if (var->vmode & FB_VMODE_DOUBLE) | |
799 | tmp |= 0x80; | |
75ed3a17 | 800 | dev_dbg(info->device, "CRT9: %d\n", tmp); |
8503df65 | 801 | vga_wcrt(regbase, VGA_CRTC_MAX_SCAN, tmp); |
1da177e4 | 802 | |
75ed3a17 | 803 | dev_dbg(info->device, "CRT10: %d\n", vsyncstart & 0xff); |
9a85cf51 | 804 | vga_wcrt(regbase, VGA_CRTC_V_SYNC_START, vsyncstart & 0xff); |
1da177e4 | 805 | |
75ed3a17 | 806 | dev_dbg(info->device, "CRT11: 64+32+%d\n", vsyncend % 16); |
9a85cf51 | 807 | vga_wcrt(regbase, VGA_CRTC_V_SYNC_END, vsyncend % 16 + 64 + 32); |
1da177e4 | 808 | |
75ed3a17 | 809 | dev_dbg(info->device, "CRT12: %d\n", vdispend & 0xff); |
9a85cf51 | 810 | vga_wcrt(regbase, VGA_CRTC_V_DISP_END, vdispend & 0xff); |
1da177e4 | 811 | |
75ed3a17 | 812 | dev_dbg(info->device, "CRT15: %d\n", (vdispend + 1) & 0xff); |
9a85cf51 | 813 | vga_wcrt(regbase, VGA_CRTC_V_BLANK_START, (vdispend + 1) & 0xff); |
1da177e4 | 814 | |
75ed3a17 | 815 | dev_dbg(info->device, "CRT16: %d\n", vtotal & 0xff); |
9a85cf51 | 816 | vga_wcrt(regbase, VGA_CRTC_V_BLANK_END, vtotal & 0xff); |
1da177e4 | 817 | |
75ed3a17 | 818 | dev_dbg(info->device, "CRT18: 0xff\n"); |
8503df65 | 819 | vga_wcrt(regbase, VGA_CRTC_LINE_COMPARE, 0xff); |
1da177e4 LT |
820 | |
821 | tmp = 0; | |
822 | if (var->vmode & FB_VMODE_INTERLACED) | |
823 | tmp |= 1; | |
9a85cf51 | 824 | if ((htotal + 5) & 64) |
1da177e4 | 825 | tmp |= 16; |
9a85cf51 | 826 | if ((htotal + 5) & 128) |
1da177e4 | 827 | tmp |= 32; |
9a85cf51 | 828 | if (vtotal & 256) |
1da177e4 | 829 | tmp |= 64; |
9a85cf51 | 830 | if (vtotal & 512) |
1da177e4 LT |
831 | tmp |= 128; |
832 | ||
75ed3a17 | 833 | dev_dbg(info->device, "CRT1a: %d\n", tmp); |
8503df65 | 834 | vga_wcrt(regbase, CL_CRT1A, tmp); |
1da177e4 | 835 | |
dafa32c5 | 836 | freq = PICOS2KHZ(var->pixclock); |
df3aafd5 KH |
837 | if (var->bits_per_pixel == 24) |
838 | if (cinfo->btype == BT_ALPINE || cinfo->btype == BT_SD64) | |
839 | freq *= 3; | |
dd14f71c KH |
840 | if (cinfo->multiplexing) |
841 | freq /= 2; | |
df3aafd5 KH |
842 | if (cinfo->doubleVCLK) |
843 | freq *= 2; | |
7cade31c | 844 | |
dafa32c5 KH |
845 | bestclock(freq, &nom, &den, &div); |
846 | ||
75ed3a17 KH |
847 | dev_dbg(info->device, "VCLK freq: %ld kHz nom: %d den: %d div: %d\n", |
848 | freq, nom, den, div); | |
849 | ||
1da177e4 LT |
850 | /* set VCLK0 */ |
851 | /* hardware RefClock: 14.31818 MHz */ | |
852 | /* formula: VClk = (OSC * N) / (D * (1+P)) */ | |
853 | /* Example: VClk = (14.31818 * 91) / (23 * (1+1)) = 28.325 MHz */ | |
854 | ||
8f19e15b KH |
855 | if (cinfo->btype == BT_ALPINE || cinfo->btype == BT_PICASSO4 || |
856 | cinfo->btype == BT_SD64) { | |
486ff387 KH |
857 | /* if freq is close to mclk or mclk/2 select mclk |
858 | * as clock source | |
859 | */ | |
75ed3a17 | 860 | int divMCLK = cirrusfb_check_mclk(info, freq); |
df3aafd5 | 861 | if (divMCLK) |
486ff387 | 862 | nom = 0; |
df3aafd5 | 863 | cirrusfb_set_mclk_as_source(info, divMCLK); |
486ff387 | 864 | } |
78d780e0 | 865 | if (is_laguna(cinfo)) { |
6e30fc08 KH |
866 | long pcifc = fb_readl(cinfo->laguna_mmio + 0x3fc); |
867 | unsigned char tile = fb_readb(cinfo->laguna_mmio + 0x407); | |
868 | unsigned short tile_control; | |
869 | ||
78d780e0 KH |
870 | if (cinfo->btype == BT_LAGUNAB) { |
871 | tile_control = fb_readw(cinfo->laguna_mmio + 0x2c4); | |
872 | tile_control &= ~0x80; | |
873 | fb_writew(tile_control, cinfo->laguna_mmio + 0x2c4); | |
874 | } | |
6e30fc08 KH |
875 | |
876 | fb_writel(pcifc | 0x10000000l, cinfo->laguna_mmio + 0x3fc); | |
877 | fb_writeb(tile & 0x3f, cinfo->laguna_mmio + 0x407); | |
878 | control = fb_readw(cinfo->laguna_mmio + 0x402); | |
879 | threshold = fb_readw(cinfo->laguna_mmio + 0xea); | |
880 | control &= ~0x6800; | |
881 | format = 0; | |
4242a23c | 882 | threshold &= 0xffc0 & 0x3fbf; |
6e30fc08 | 883 | } |
486ff387 | 884 | if (nom) { |
486ff387 KH |
885 | tmp = den << 1; |
886 | if (div != 0) | |
887 | tmp |= 1; | |
486ff387 KH |
888 | /* 6 bit denom; ONLY 5434!!! (bugged me 10 days) */ |
889 | if ((cinfo->btype == BT_SD64) || | |
890 | (cinfo->btype == BT_ALPINE) || | |
891 | (cinfo->btype == BT_GD5480)) | |
892 | tmp |= 0x80; | |
893 | ||
55a4ea6a | 894 | /* Laguna chipset has reversed clock registers */ |
78d780e0 | 895 | if (is_laguna(cinfo)) { |
55a4ea6a KH |
896 | vga_wseq(regbase, CL_SEQRE, tmp); |
897 | vga_wseq(regbase, CL_SEQR1E, nom); | |
898 | } else { | |
df3aafd5 KH |
899 | vga_wseq(regbase, CL_SEQRE, nom); |
900 | vga_wseq(regbase, CL_SEQR1E, tmp); | |
55a4ea6a | 901 | } |
486ff387 | 902 | } |
1da177e4 | 903 | |
9a85cf51 | 904 | if (yres >= 1024) |
1da177e4 | 905 | /* 1280x1024 */ |
8503df65 | 906 | vga_wcrt(regbase, VGA_CRTC_MODE, 0xc7); |
1da177e4 LT |
907 | else |
908 | /* mode control: VGA_CRTC_START_HI enable, ROTATE(?), 16bit | |
909 | * address wrap, no compat. */ | |
8503df65 | 910 | vga_wcrt(regbase, VGA_CRTC_MODE, 0xc3); |
1da177e4 | 911 | |
1da177e4 LT |
912 | /* don't know if it would hurt to also program this if no interlaced */ |
913 | /* mode is used, but I feel better this way.. :-) */ | |
914 | if (var->vmode & FB_VMODE_INTERLACED) | |
9a85cf51 | 915 | vga_wcrt(regbase, VGA_CRTC_REGS, htotal / 2); |
1da177e4 | 916 | else |
8503df65 | 917 | vga_wcrt(regbase, VGA_CRTC_REGS, 0x00); /* interlace control */ |
1da177e4 | 918 | |
df3aafd5 | 919 | /* adjust horizontal/vertical sync type (low/high), use VCLK3 */ |
8503df65 | 920 | /* enable display memory & CRTC I/O address for color mode */ |
df3aafd5 | 921 | tmp = 0x03 | 0xc; |
1da177e4 LT |
922 | if (var->sync & FB_SYNC_HOR_HIGH_ACT) |
923 | tmp |= 0x40; | |
924 | if (var->sync & FB_SYNC_VERT_HIGH_ACT) | |
925 | tmp |= 0x80; | |
8503df65 | 926 | WGen(cinfo, VGA_MIS_W, tmp); |
1da177e4 | 927 | |
8503df65 KH |
928 | /* text cursor on and start line */ |
929 | vga_wcrt(regbase, VGA_CRTC_CURSOR_START, 0); | |
930 | /* text cursor end line */ | |
931 | vga_wcrt(regbase, VGA_CRTC_CURSOR_END, 31); | |
1da177e4 LT |
932 | |
933 | /****************************************************** | |
934 | * | |
935 | * 1 bpp | |
936 | * | |
937 | */ | |
938 | ||
939 | /* programming for different color depths */ | |
940 | if (var->bits_per_pixel == 1) { | |
75ed3a17 | 941 | dev_dbg(info->device, "preparing for 1 bit deep display\n"); |
8503df65 | 942 | vga_wgfx(regbase, VGA_GFX_MODE, 0); /* mode register */ |
1da177e4 LT |
943 | |
944 | /* SR07 */ | |
945 | switch (cinfo->btype) { | |
946 | case BT_SD64: | |
947 | case BT_PICCOLO: | |
948 | case BT_PICASSO: | |
949 | case BT_SPECTRUM: | |
950 | case BT_PICASSO4: | |
951 | case BT_ALPINE: | |
952 | case BT_GD5480: | |
8503df65 | 953 | vga_wseq(regbase, CL_SEQR7, |
48c329e9 | 954 | cinfo->multiplexing ? |
1da177e4 LT |
955 | bi->sr07_1bpp_mux : bi->sr07_1bpp); |
956 | break; | |
957 | ||
958 | case BT_LAGUNA: | |
78d780e0 | 959 | case BT_LAGUNAB: |
8503df65 KH |
960 | vga_wseq(regbase, CL_SEQR7, |
961 | vga_rseq(regbase, CL_SEQR7) & ~0x01); | |
1da177e4 LT |
962 | break; |
963 | ||
964 | default: | |
75ed3a17 | 965 | dev_warn(info->device, "unknown Board\n"); |
1da177e4 LT |
966 | break; |
967 | } | |
968 | ||
969 | /* Extended Sequencer Mode */ | |
970 | switch (cinfo->btype) { | |
1da177e4 LT |
971 | |
972 | case BT_PICCOLO: | |
060b6002 | 973 | case BT_SPECTRUM: |
8503df65 KH |
974 | /* evtl d0 bei 1 bit? avoid FIFO underruns..? */ |
975 | vga_wseq(regbase, CL_SEQRF, 0xb0); | |
1da177e4 LT |
976 | break; |
977 | ||
978 | case BT_PICASSO: | |
8503df65 KH |
979 | /* ## vorher d0 avoid FIFO underruns..? */ |
980 | vga_wseq(regbase, CL_SEQRF, 0xd0); | |
1da177e4 LT |
981 | break; |
982 | ||
8f19e15b | 983 | case BT_SD64: |
1da177e4 LT |
984 | case BT_PICASSO4: |
985 | case BT_ALPINE: | |
986 | case BT_GD5480: | |
987 | case BT_LAGUNA: | |
78d780e0 | 988 | case BT_LAGUNAB: |
1da177e4 LT |
989 | /* do nothing */ |
990 | break; | |
991 | ||
992 | default: | |
75ed3a17 | 993 | dev_warn(info->device, "unknown Board\n"); |
1da177e4 LT |
994 | break; |
995 | } | |
996 | ||
8503df65 KH |
997 | /* pixel mask: pass-through for first plane */ |
998 | WGen(cinfo, VGA_PEL_MSK, 0x01); | |
48c329e9 | 999 | if (cinfo->multiplexing) |
8503df65 KH |
1000 | /* hidden dac reg: 1280x1024 */ |
1001 | WHDR(cinfo, 0x4a); | |
1da177e4 | 1002 | else |
8503df65 KH |
1003 | /* hidden dac: nothing */ |
1004 | WHDR(cinfo, 0); | |
1005 | /* memory mode: odd/even, ext. memory */ | |
1006 | vga_wseq(regbase, VGA_SEQ_MEMORY_MODE, 0x06); | |
1007 | /* plane mask: only write to first plane */ | |
1008 | vga_wseq(regbase, VGA_SEQ_PLANE_WRITE, 0x01); | |
1da177e4 LT |
1009 | } |
1010 | ||
1011 | /****************************************************** | |
1012 | * | |
1013 | * 8 bpp | |
1014 | * | |
1015 | */ | |
1016 | ||
1017 | else if (var->bits_per_pixel == 8) { | |
75ed3a17 | 1018 | dev_dbg(info->device, "preparing for 8 bit deep display\n"); |
1da177e4 LT |
1019 | switch (cinfo->btype) { |
1020 | case BT_SD64: | |
1021 | case BT_PICCOLO: | |
1022 | case BT_PICASSO: | |
1023 | case BT_SPECTRUM: | |
1024 | case BT_PICASSO4: | |
1025 | case BT_ALPINE: | |
1026 | case BT_GD5480: | |
8503df65 | 1027 | vga_wseq(regbase, CL_SEQR7, |
48c329e9 | 1028 | cinfo->multiplexing ? |
1da177e4 LT |
1029 | bi->sr07_8bpp_mux : bi->sr07_8bpp); |
1030 | break; | |
1031 | ||
1032 | case BT_LAGUNA: | |
78d780e0 | 1033 | case BT_LAGUNAB: |
8503df65 KH |
1034 | vga_wseq(regbase, CL_SEQR7, |
1035 | vga_rseq(regbase, CL_SEQR7) | 0x01); | |
6e30fc08 | 1036 | threshold |= 0x10; |
1da177e4 LT |
1037 | break; |
1038 | ||
1039 | default: | |
75ed3a17 | 1040 | dev_warn(info->device, "unknown Board\n"); |
1da177e4 LT |
1041 | break; |
1042 | } | |
1043 | ||
1044 | switch (cinfo->btype) { | |
1da177e4 | 1045 | case BT_PICCOLO: |
1da177e4 | 1046 | case BT_PICASSO: |
1da177e4 | 1047 | case BT_SPECTRUM: |
8503df65 KH |
1048 | /* Fast Page-Mode writes */ |
1049 | vga_wseq(regbase, CL_SEQRF, 0xb0); | |
1da177e4 LT |
1050 | break; |
1051 | ||
1052 | case BT_PICASSO4: | |
1053 | #ifdef CONFIG_ZORRO | |
8503df65 KH |
1054 | /* ### INCOMPLETE!! */ |
1055 | vga_wseq(regbase, CL_SEQRF, 0xb8); | |
1da177e4 | 1056 | #endif |
1da177e4 | 1057 | case BT_ALPINE: |
8f19e15b | 1058 | case BT_SD64: |
1da177e4 LT |
1059 | case BT_GD5480: |
1060 | case BT_LAGUNA: | |
78d780e0 | 1061 | case BT_LAGUNAB: |
1da177e4 LT |
1062 | /* do nothing */ |
1063 | break; | |
1064 | ||
1065 | default: | |
75ed3a17 | 1066 | dev_warn(info->device, "unknown board\n"); |
1da177e4 LT |
1067 | break; |
1068 | } | |
1069 | ||
8503df65 KH |
1070 | /* mode register: 256 color mode */ |
1071 | vga_wgfx(regbase, VGA_GFX_MODE, 64); | |
48c329e9 | 1072 | if (cinfo->multiplexing) |
8503df65 KH |
1073 | /* hidden dac reg: 1280x1024 */ |
1074 | WHDR(cinfo, 0x4a); | |
1da177e4 | 1075 | else |
8503df65 KH |
1076 | /* hidden dac: nothing */ |
1077 | WHDR(cinfo, 0); | |
1da177e4 LT |
1078 | } |
1079 | ||
1080 | /****************************************************** | |
1081 | * | |
1082 | * 16 bpp | |
1083 | * | |
1084 | */ | |
1085 | ||
1086 | else if (var->bits_per_pixel == 16) { | |
75ed3a17 | 1087 | dev_dbg(info->device, "preparing for 16 bit deep display\n"); |
1da177e4 | 1088 | switch (cinfo->btype) { |
1da177e4 | 1089 | case BT_PICCOLO: |
060b6002 | 1090 | case BT_SPECTRUM: |
8503df65 KH |
1091 | vga_wseq(regbase, CL_SEQR7, 0x87); |
1092 | /* Fast Page-Mode writes */ | |
1093 | vga_wseq(regbase, CL_SEQRF, 0xb0); | |
1da177e4 LT |
1094 | break; |
1095 | ||
1096 | case BT_PICASSO: | |
8503df65 KH |
1097 | vga_wseq(regbase, CL_SEQR7, 0x27); |
1098 | /* Fast Page-Mode writes */ | |
1099 | vga_wseq(regbase, CL_SEQRF, 0xb0); | |
1da177e4 LT |
1100 | break; |
1101 | ||
8f19e15b | 1102 | case BT_SD64: |
1da177e4 | 1103 | case BT_PICASSO4: |
1da177e4 | 1104 | case BT_ALPINE: |
8f19e15b | 1105 | /* Extended Sequencer Mode: 256c col. mode */ |
df3aafd5 KH |
1106 | vga_wseq(regbase, CL_SEQR7, |
1107 | cinfo->doubleVCLK ? 0xa3 : 0xa7); | |
1da177e4 LT |
1108 | break; |
1109 | ||
1110 | case BT_GD5480: | |
8503df65 | 1111 | vga_wseq(regbase, CL_SEQR7, 0x17); |
1da177e4 LT |
1112 | /* We already set SRF and SR1F */ |
1113 | break; | |
1114 | ||
1115 | case BT_LAGUNA: | |
78d780e0 | 1116 | case BT_LAGUNAB: |
8503df65 KH |
1117 | vga_wseq(regbase, CL_SEQR7, |
1118 | vga_rseq(regbase, CL_SEQR7) & ~0x01); | |
6e30fc08 KH |
1119 | control |= 0x2000; |
1120 | format |= 0x1400; | |
1121 | threshold |= 0x10; | |
1da177e4 LT |
1122 | break; |
1123 | ||
1124 | default: | |
75ed3a17 | 1125 | dev_warn(info->device, "unknown Board\n"); |
1da177e4 LT |
1126 | break; |
1127 | } | |
1128 | ||
8503df65 KH |
1129 | /* mode register: 256 color mode */ |
1130 | vga_wgfx(regbase, VGA_GFX_MODE, 64); | |
1da177e4 | 1131 | #ifdef CONFIG_PCI |
df3aafd5 | 1132 | WHDR(cinfo, cinfo->doubleVCLK ? 0xe1 : 0xc1); |
1da177e4 LT |
1133 | #elif defined(CONFIG_ZORRO) |
1134 | /* FIXME: CONFIG_PCI and CONFIG_ZORRO may be defined both */ | |
8503df65 | 1135 | WHDR(cinfo, 0xa0); /* hidden dac reg: nothing special */ |
1da177e4 | 1136 | #endif |
1da177e4 LT |
1137 | } |
1138 | ||
1139 | /****************************************************** | |
1140 | * | |
7cade31c | 1141 | * 24 bpp |
1da177e4 LT |
1142 | * |
1143 | */ | |
1144 | ||
7cade31c KH |
1145 | else if (var->bits_per_pixel == 24) { |
1146 | dev_dbg(info->device, "preparing for 24 bit deep display\n"); | |
1da177e4 | 1147 | switch (cinfo->btype) { |
1da177e4 | 1148 | case BT_PICCOLO: |
060b6002 | 1149 | case BT_SPECTRUM: |
8503df65 KH |
1150 | vga_wseq(regbase, CL_SEQR7, 0x85); |
1151 | /* Fast Page-Mode writes */ | |
1152 | vga_wseq(regbase, CL_SEQRF, 0xb0); | |
1da177e4 LT |
1153 | break; |
1154 | ||
1155 | case BT_PICASSO: | |
8503df65 KH |
1156 | vga_wseq(regbase, CL_SEQR7, 0x25); |
1157 | /* Fast Page-Mode writes */ | |
1158 | vga_wseq(regbase, CL_SEQRF, 0xb0); | |
1da177e4 LT |
1159 | break; |
1160 | ||
8f19e15b | 1161 | case BT_SD64: |
1da177e4 | 1162 | case BT_PICASSO4: |
1da177e4 | 1163 | case BT_ALPINE: |
8f19e15b | 1164 | /* Extended Sequencer Mode: 256c col. mode */ |
7cade31c | 1165 | vga_wseq(regbase, CL_SEQR7, 0xa5); |
1da177e4 LT |
1166 | break; |
1167 | ||
1168 | case BT_GD5480: | |
7cade31c | 1169 | vga_wseq(regbase, CL_SEQR7, 0x15); |
1da177e4 LT |
1170 | /* We already set SRF and SR1F */ |
1171 | break; | |
1172 | ||
1173 | case BT_LAGUNA: | |
78d780e0 | 1174 | case BT_LAGUNAB: |
8503df65 KH |
1175 | vga_wseq(regbase, CL_SEQR7, |
1176 | vga_rseq(regbase, CL_SEQR7) & ~0x01); | |
7cade31c KH |
1177 | control |= 0x4000; |
1178 | format |= 0x2400; | |
6e30fc08 | 1179 | threshold |= 0x20; |
1da177e4 LT |
1180 | break; |
1181 | ||
1182 | default: | |
75ed3a17 | 1183 | dev_warn(info->device, "unknown Board\n"); |
1da177e4 LT |
1184 | break; |
1185 | } | |
1186 | ||
8503df65 KH |
1187 | /* mode register: 256 color mode */ |
1188 | vga_wgfx(regbase, VGA_GFX_MODE, 64); | |
8503df65 KH |
1189 | /* hidden dac reg: 8-8-8 mode (24 or 32) */ |
1190 | WHDR(cinfo, 0xc5); | |
1da177e4 LT |
1191 | } |
1192 | ||
1193 | /****************************************************** | |
1194 | * | |
1195 | * unknown/unsupported bpp | |
1196 | * | |
1197 | */ | |
1198 | ||
8503df65 | 1199 | else |
75ed3a17 KH |
1200 | dev_err(info->device, |
1201 | "What's this? requested color depth == %d.\n", | |
1da177e4 | 1202 | var->bits_per_pixel); |
1da177e4 | 1203 | |
6683e01e KH |
1204 | pitch = info->fix.line_length >> 3; |
1205 | vga_wcrt(regbase, VGA_CRTC_OFFSET, pitch & 0xff); | |
1da177e4 | 1206 | tmp = 0x22; |
6683e01e | 1207 | if (pitch & 0x100) |
1da177e4 LT |
1208 | tmp |= 0x10; /* offset overflow bit */ |
1209 | ||
8503df65 KH |
1210 | /* screen start addr #16-18, fastpagemode cycles */ |
1211 | vga_wcrt(regbase, CL_CRT1B, tmp); | |
1da177e4 | 1212 | |
213d4bdd KH |
1213 | /* screen start address bit 19 */ |
1214 | if (cirrusfb_board_info[cinfo->btype].scrn_start_bit19) | |
6683e01e | 1215 | vga_wcrt(regbase, CL_CRT1D, (pitch >> 9) & 1); |
8503df65 | 1216 | |
78d780e0 | 1217 | if (is_laguna(cinfo)) { |
213d4bdd KH |
1218 | tmp = 0; |
1219 | if ((htotal + 5) & 256) | |
1220 | tmp |= 128; | |
1221 | if (hdispend & 256) | |
1222 | tmp |= 64; | |
1223 | if (hsyncstart & 256) | |
1224 | tmp |= 48; | |
1225 | if (vtotal & 1024) | |
1226 | tmp |= 8; | |
1227 | if (vdispend & 1024) | |
1228 | tmp |= 4; | |
1229 | if (vsyncstart & 1024) | |
1230 | tmp |= 3; | |
1231 | ||
1232 | vga_wcrt(regbase, CL_CRT1E, tmp); | |
1233 | dev_dbg(info->device, "CRT1e: %d\n", tmp); | |
1234 | } | |
1235 | ||
8503df65 KH |
1236 | /* pixel panning */ |
1237 | vga_wattr(regbase, CL_AR33, 0); | |
1da177e4 LT |
1238 | |
1239 | /* [ EGS: SetOffset(); ] */ | |
1240 | /* From SetOffset(): Turn on VideoEnable bit in Attribute controller */ | |
8503df65 KH |
1241 | AttrOn(cinfo); |
1242 | ||
78d780e0 | 1243 | if (is_laguna(cinfo)) { |
6e30fc08 KH |
1244 | /* no tiles */ |
1245 | fb_writew(control | 0x1000, cinfo->laguna_mmio + 0x402); | |
1246 | fb_writew(format, cinfo->laguna_mmio + 0xc0); | |
1247 | fb_writew(threshold, cinfo->laguna_mmio + 0xea); | |
1248 | } | |
1da177e4 LT |
1249 | /* finally, turn on everything - turn off "FullBandwidth" bit */ |
1250 | /* also, set "DotClock%2" bit where requested */ | |
1251 | tmp = 0x01; | |
1252 | ||
1253 | /*** FB_VMODE_CLOCK_HALVE in linux/fb.h not defined anymore ? | |
1254 | if (var->vmode & FB_VMODE_CLOCK_HALVE) | |
1255 | tmp |= 0x08; | |
1256 | */ | |
1257 | ||
8503df65 | 1258 | vga_wseq(regbase, VGA_SEQ_CLOCK_MODE, tmp); |
75ed3a17 | 1259 | dev_dbg(info->device, "CL_SEQR1: %d\n", tmp); |
1da177e4 | 1260 | |
1da177e4 | 1261 | #ifdef CIRRUSFB_DEBUG |
75ed3a17 | 1262 | cirrusfb_dbg_reg_dump(info, NULL); |
1da177e4 LT |
1263 | #endif |
1264 | ||
1da177e4 LT |
1265 | return 0; |
1266 | } | |
1267 | ||
1268 | /* for some reason incomprehensible to me, cirrusfb requires that you write | |
1269 | * the registers twice for the settings to take..grr. -dte */ | |
8503df65 | 1270 | static int cirrusfb_set_par(struct fb_info *info) |
1da177e4 | 1271 | { |
8503df65 KH |
1272 | cirrusfb_set_par_foo(info); |
1273 | return cirrusfb_set_par_foo(info); | |
1da177e4 LT |
1274 | } |
1275 | ||
8503df65 KH |
1276 | static int cirrusfb_setcolreg(unsigned regno, unsigned red, unsigned green, |
1277 | unsigned blue, unsigned transp, | |
1278 | struct fb_info *info) | |
1da177e4 LT |
1279 | { |
1280 | struct cirrusfb_info *cinfo = info->par; | |
1281 | ||
1282 | if (regno > 255) | |
1283 | return -EINVAL; | |
1284 | ||
1285 | if (info->fix.visual == FB_VISUAL_TRUECOLOR) { | |
1286 | u32 v; | |
1287 | red >>= (16 - info->var.red.length); | |
1288 | green >>= (16 - info->var.green.length); | |
1289 | blue >>= (16 - info->var.blue.length); | |
1290 | ||
8503df65 | 1291 | if (regno >= 16) |
1da177e4 LT |
1292 | return 1; |
1293 | v = (red << info->var.red.offset) | | |
1294 | (green << info->var.green.offset) | | |
1295 | (blue << info->var.blue.offset); | |
1296 | ||
060b6002 | 1297 | cinfo->pseudo_palette[regno] = v; |
1da177e4 LT |
1298 | return 0; |
1299 | } | |
1300 | ||
8503df65 KH |
1301 | if (info->var.bits_per_pixel == 8) |
1302 | WClut(cinfo, regno, red >> 10, green >> 10, blue >> 10); | |
1da177e4 LT |
1303 | |
1304 | return 0; | |
1305 | ||
1306 | } | |
1307 | ||
1308 | /************************************************************************* | |
1309 | cirrusfb_pan_display() | |
1310 | ||
1311 | performs display panning - provided hardware permits this | |
1312 | **************************************************************************/ | |
8503df65 KH |
1313 | static int cirrusfb_pan_display(struct fb_var_screeninfo *var, |
1314 | struct fb_info *info) | |
1da177e4 | 1315 | { |
99a45847 | 1316 | int xoffset; |
1da177e4 | 1317 | unsigned long base; |
213d4bdd | 1318 | unsigned char tmp, xpix; |
1da177e4 LT |
1319 | struct cirrusfb_info *cinfo = info->par; |
1320 | ||
1da177e4 LT |
1321 | /* no range checks for xoffset and yoffset, */ |
1322 | /* as fb_pan_display has already done this */ | |
1323 | if (var->vmode & FB_VMODE_YWRAP) | |
1324 | return -EINVAL; | |
1325 | ||
1da177e4 | 1326 | xoffset = var->xoffset * info->var.bits_per_pixel / 8; |
1da177e4 | 1327 | |
99a45847 | 1328 | base = var->yoffset * info->fix.line_length + xoffset; |
1da177e4 LT |
1329 | |
1330 | if (info->var.bits_per_pixel == 1) { | |
1331 | /* base is already correct */ | |
1332 | xpix = (unsigned char) (var->xoffset % 8); | |
1333 | } else { | |
1334 | base /= 4; | |
1335 | xpix = (unsigned char) ((xoffset % 4) * 2); | |
1336 | } | |
1337 | ||
78d780e0 | 1338 | if (!is_laguna(cinfo)) |
1b48cb56 | 1339 | cirrusfb_WaitBLT(cinfo->regbase); |
1da177e4 LT |
1340 | |
1341 | /* lower 8 + 8 bits of screen start address */ | |
99a45847 KH |
1342 | vga_wcrt(cinfo->regbase, VGA_CRTC_START_LO, base & 0xff); |
1343 | vga_wcrt(cinfo->regbase, VGA_CRTC_START_HI, (base >> 8) & 0xff); | |
1da177e4 | 1344 | |
213d4bdd KH |
1345 | /* 0xf2 is %11110010, exclude tmp bits */ |
1346 | tmp = vga_rcrt(cinfo->regbase, CL_CRT1B) & 0xf2; | |
1da177e4 LT |
1347 | /* construct bits 16, 17 and 18 of screen start address */ |
1348 | if (base & 0x10000) | |
1349 | tmp |= 0x01; | |
1350 | if (base & 0x20000) | |
1351 | tmp |= 0x04; | |
1352 | if (base & 0x40000) | |
1353 | tmp |= 0x08; | |
1354 | ||
213d4bdd | 1355 | vga_wcrt(cinfo->regbase, CL_CRT1B, tmp); |
1da177e4 LT |
1356 | |
1357 | /* construct bit 19 of screen start address */ | |
48c329e9 | 1358 | if (cirrusfb_board_info[cinfo->btype].scrn_start_bit19) { |
78d780e0 KH |
1359 | tmp = vga_rcrt(cinfo->regbase, CL_CRT1D); |
1360 | if (is_laguna(cinfo)) | |
1361 | tmp = (tmp & ~0x18) | ((base >> 16) & 0x18); | |
1362 | else | |
1363 | tmp = (tmp & ~0x80) | ((base >> 12) & 0x80); | |
48c329e9 KH |
1364 | vga_wcrt(cinfo->regbase, CL_CRT1D, tmp); |
1365 | } | |
1da177e4 | 1366 | |
8503df65 KH |
1367 | /* write pixel panning value to AR33; this does not quite work in 8bpp |
1368 | * | |
1369 | * ### Piccolo..? Will this work? | |
1370 | */ | |
1da177e4 | 1371 | if (info->var.bits_per_pixel == 1) |
8503df65 | 1372 | vga_wattr(cinfo->regbase, CL_AR33, xpix); |
1da177e4 | 1373 | |
8503df65 | 1374 | return 0; |
1da177e4 LT |
1375 | } |
1376 | ||
8503df65 | 1377 | static int cirrusfb_blank(int blank_mode, struct fb_info *info) |
1da177e4 LT |
1378 | { |
1379 | /* | |
8503df65 KH |
1380 | * Blank the screen if blank_mode != 0, else unblank. If blank == NULL |
1381 | * then the caller blanks by setting the CLUT (Color Look Up Table) | |
1382 | * to all black. Return 0 if blanking succeeded, != 0 if un-/blanking | |
1383 | * failed due to e.g. a video mode which doesn't support it. | |
1384 | * Implements VESA suspend and powerdown modes on hardware that | |
1385 | * supports disabling hsync/vsync: | |
1386 | * blank_mode == 2: suspend vsync | |
1387 | * blank_mode == 3: suspend hsync | |
1388 | * blank_mode == 4: powerdown | |
1da177e4 LT |
1389 | */ |
1390 | unsigned char val; | |
1391 | struct cirrusfb_info *cinfo = info->par; | |
1392 | int current_mode = cinfo->blank_mode; | |
1393 | ||
75ed3a17 | 1394 | dev_dbg(info->device, "ENTER, blank mode = %d\n", blank_mode); |
1da177e4 LT |
1395 | |
1396 | if (info->state != FBINFO_STATE_RUNNING || | |
1397 | current_mode == blank_mode) { | |
75ed3a17 | 1398 | dev_dbg(info->device, "EXIT, returning 0\n"); |
1da177e4 LT |
1399 | return 0; |
1400 | } | |
1401 | ||
1402 | /* Undo current */ | |
1403 | if (current_mode == FB_BLANK_NORMAL || | |
213d4bdd | 1404 | current_mode == FB_BLANK_UNBLANK) |
8503df65 | 1405 | /* clear "FullBandwidth" bit */ |
213d4bdd KH |
1406 | val = 0; |
1407 | else | |
8503df65 | 1408 | /* set "FullBandwidth" bit */ |
213d4bdd KH |
1409 | val = 0x20; |
1410 | ||
1411 | val |= vga_rseq(cinfo->regbase, VGA_SEQ_CLOCK_MODE) & 0xdf; | |
1412 | vga_wseq(cinfo->regbase, VGA_SEQ_CLOCK_MODE, val); | |
1da177e4 LT |
1413 | |
1414 | switch (blank_mode) { | |
1415 | case FB_BLANK_UNBLANK: | |
1416 | case FB_BLANK_NORMAL: | |
213d4bdd | 1417 | val = 0x00; |
1da177e4 LT |
1418 | break; |
1419 | case FB_BLANK_VSYNC_SUSPEND: | |
213d4bdd | 1420 | val = 0x04; |
1da177e4 LT |
1421 | break; |
1422 | case FB_BLANK_HSYNC_SUSPEND: | |
213d4bdd | 1423 | val = 0x02; |
1da177e4 LT |
1424 | break; |
1425 | case FB_BLANK_POWERDOWN: | |
213d4bdd | 1426 | val = 0x06; |
1da177e4 LT |
1427 | break; |
1428 | default: | |
75ed3a17 | 1429 | dev_dbg(info->device, "EXIT, returning 1\n"); |
1da177e4 LT |
1430 | return 1; |
1431 | } | |
1432 | ||
213d4bdd KH |
1433 | vga_wgfx(cinfo->regbase, CL_GRE, val); |
1434 | ||
1da177e4 | 1435 | cinfo->blank_mode = blank_mode; |
75ed3a17 | 1436 | dev_dbg(info->device, "EXIT, returning 0\n"); |
1da177e4 LT |
1437 | |
1438 | /* Let fbcon do a soft blank for us */ | |
1439 | return (blank_mode == FB_BLANK_NORMAL) ? 1 : 0; | |
1440 | } | |
213d4bdd | 1441 | |
1da177e4 LT |
1442 | /**** END Hardware specific Routines **************************************/ |
1443 | /****************************************************************************/ | |
1444 | /**** BEGIN Internal Routines ***********************************************/ | |
1445 | ||
9199ec5c | 1446 | static void init_vgachip(struct fb_info *info) |
1da177e4 | 1447 | { |
9199ec5c | 1448 | struct cirrusfb_info *cinfo = info->par; |
1da177e4 LT |
1449 | const struct cirrusfb_board_info_rec *bi; |
1450 | ||
8503df65 | 1451 | assert(cinfo != NULL); |
1da177e4 LT |
1452 | |
1453 | bi = &cirrusfb_board_info[cinfo->btype]; | |
1454 | ||
1455 | /* reset board globally */ | |
1456 | switch (cinfo->btype) { | |
1457 | case BT_PICCOLO: | |
8503df65 KH |
1458 | WSFR(cinfo, 0x01); |
1459 | udelay(500); | |
1460 | WSFR(cinfo, 0x51); | |
1461 | udelay(500); | |
1da177e4 LT |
1462 | break; |
1463 | case BT_PICASSO: | |
8503df65 KH |
1464 | WSFR2(cinfo, 0xff); |
1465 | udelay(500); | |
1da177e4 LT |
1466 | break; |
1467 | case BT_SD64: | |
1468 | case BT_SPECTRUM: | |
8503df65 KH |
1469 | WSFR(cinfo, 0x1f); |
1470 | udelay(500); | |
1471 | WSFR(cinfo, 0x4f); | |
1472 | udelay(500); | |
1da177e4 LT |
1473 | break; |
1474 | case BT_PICASSO4: | |
8503df65 KH |
1475 | /* disable flickerfixer */ |
1476 | vga_wcrt(cinfo->regbase, CL_CRT51, 0x00); | |
1477 | mdelay(100); | |
8503df65 KH |
1478 | /* mode */ |
1479 | vga_wgfx(cinfo->regbase, CL_GR31, 0x00); | |
7cade31c | 1480 | case BT_GD5480: /* fall through */ |
8503df65 KH |
1481 | /* from Klaus' NetBSD driver: */ |
1482 | vga_wgfx(cinfo->regbase, CL_GR2F, 0x00); | |
7cade31c KH |
1483 | case BT_ALPINE: /* fall through */ |
1484 | /* put blitter into 542x compat */ | |
1485 | vga_wgfx(cinfo->regbase, CL_GR33, 0x00); | |
1da177e4 LT |
1486 | break; |
1487 | ||
1b48cb56 | 1488 | case BT_LAGUNA: |
78d780e0 | 1489 | case BT_LAGUNAB: |
1da177e4 LT |
1490 | /* Nothing to do to reset the board. */ |
1491 | break; | |
1492 | ||
1493 | default: | |
75ed3a17 | 1494 | dev_err(info->device, "Warning: Unknown board type\n"); |
1da177e4 LT |
1495 | break; |
1496 | } | |
1497 | ||
9199ec5c KH |
1498 | /* make sure RAM size set by this point */ |
1499 | assert(info->screen_size > 0); | |
1da177e4 LT |
1500 | |
1501 | /* the P4 is not fully initialized here; I rely on it having been */ | |
1502 | /* inited under AmigaOS already, which seems to work just fine */ | |
8503df65 | 1503 | /* (Klaus advised to do it this way) */ |
1da177e4 LT |
1504 | |
1505 | if (cinfo->btype != BT_PICASSO4) { | |
8503df65 KH |
1506 | WGen(cinfo, CL_VSSM, 0x10); /* EGS: 0x16 */ |
1507 | WGen(cinfo, CL_POS102, 0x01); | |
1508 | WGen(cinfo, CL_VSSM, 0x08); /* EGS: 0x0e */ | |
1da177e4 LT |
1509 | |
1510 | if (cinfo->btype != BT_SD64) | |
8503df65 | 1511 | WGen(cinfo, CL_VSSM2, 0x01); |
1da177e4 | 1512 | |
8503df65 | 1513 | /* reset sequencer logic */ |
1b48cb56 | 1514 | vga_wseq(cinfo->regbase, VGA_SEQ_RESET, 0x03); |
1da177e4 | 1515 | |
8503df65 KH |
1516 | /* FullBandwidth (video off) and 8/9 dot clock */ |
1517 | vga_wseq(cinfo->regbase, VGA_SEQ_CLOCK_MODE, 0x21); | |
1da177e4 | 1518 | |
8503df65 KH |
1519 | /* "magic cookie" - doesn't make any sense to me.. */ |
1520 | /* vga_wgfx(cinfo->regbase, CL_GRA, 0xce); */ | |
1521 | /* unlock all extension registers */ | |
1522 | vga_wseq(cinfo->regbase, CL_SEQR6, 0x12); | |
1da177e4 | 1523 | |
1da177e4 LT |
1524 | switch (cinfo->btype) { |
1525 | case BT_GD5480: | |
8503df65 | 1526 | vga_wseq(cinfo->regbase, CL_SEQRF, 0x98); |
1da177e4 LT |
1527 | break; |
1528 | case BT_ALPINE: | |
1b48cb56 | 1529 | case BT_LAGUNA: |
78d780e0 | 1530 | case BT_LAGUNAB: |
1da177e4 LT |
1531 | break; |
1532 | case BT_SD64: | |
df3aafd5 | 1533 | #ifdef CONFIG_ZORRO |
8503df65 | 1534 | vga_wseq(cinfo->regbase, CL_SEQRF, 0xb8); |
df3aafd5 | 1535 | #endif |
1da177e4 LT |
1536 | break; |
1537 | default: | |
8503df65 KH |
1538 | vga_wseq(cinfo->regbase, CL_SEQR16, 0x0f); |
1539 | vga_wseq(cinfo->regbase, CL_SEQRF, 0xb0); | |
1da177e4 LT |
1540 | break; |
1541 | } | |
1542 | } | |
8503df65 KH |
1543 | /* plane mask: nothing */ |
1544 | vga_wseq(cinfo->regbase, VGA_SEQ_PLANE_WRITE, 0xff); | |
1545 | /* character map select: doesn't even matter in gx mode */ | |
1546 | vga_wseq(cinfo->regbase, VGA_SEQ_CHARACTER_MAP, 0x00); | |
48c329e9 KH |
1547 | /* memory mode: chain4, ext. memory */ |
1548 | vga_wseq(cinfo->regbase, VGA_SEQ_MEMORY_MODE, 0x0a); | |
1da177e4 LT |
1549 | |
1550 | /* controller-internal base address of video memory */ | |
1551 | if (bi->init_sr07) | |
8503df65 | 1552 | vga_wseq(cinfo->regbase, CL_SEQR7, bi->sr07); |
1da177e4 | 1553 | |
8503df65 KH |
1554 | /* vga_wseq(cinfo->regbase, CL_SEQR8, 0x00); */ |
1555 | /* EEPROM control: shouldn't be necessary to write to this at all.. */ | |
1da177e4 | 1556 | |
8503df65 KH |
1557 | /* graphics cursor X position (incomplete; position gives rem. 3 bits */ |
1558 | vga_wseq(cinfo->regbase, CL_SEQR10, 0x00); | |
1559 | /* graphics cursor Y position (..."... ) */ | |
1560 | vga_wseq(cinfo->regbase, CL_SEQR11, 0x00); | |
1561 | /* graphics cursor attributes */ | |
1562 | vga_wseq(cinfo->regbase, CL_SEQR12, 0x00); | |
1563 | /* graphics cursor pattern address */ | |
1564 | vga_wseq(cinfo->regbase, CL_SEQR13, 0x00); | |
1da177e4 LT |
1565 | |
1566 | /* writing these on a P4 might give problems.. */ | |
1567 | if (cinfo->btype != BT_PICASSO4) { | |
8503df65 KH |
1568 | /* configuration readback and ext. color */ |
1569 | vga_wseq(cinfo->regbase, CL_SEQR17, 0x00); | |
1570 | /* signature generator */ | |
1571 | vga_wseq(cinfo->regbase, CL_SEQR18, 0x02); | |
1da177e4 LT |
1572 | } |
1573 | ||
8503df65 KH |
1574 | /* Screen A preset row scan: none */ |
1575 | vga_wcrt(cinfo->regbase, VGA_CRTC_PRESET_ROW, 0x00); | |
1576 | /* Text cursor start: disable text cursor */ | |
1577 | vga_wcrt(cinfo->regbase, VGA_CRTC_CURSOR_START, 0x20); | |
1578 | /* Text cursor end: - */ | |
1579 | vga_wcrt(cinfo->regbase, VGA_CRTC_CURSOR_END, 0x00); | |
8503df65 KH |
1580 | /* text cursor location high: 0 */ |
1581 | vga_wcrt(cinfo->regbase, VGA_CRTC_CURSOR_HI, 0x00); | |
1582 | /* text cursor location low: 0 */ | |
1583 | vga_wcrt(cinfo->regbase, VGA_CRTC_CURSOR_LO, 0x00); | |
1584 | ||
1585 | /* Underline Row scanline: - */ | |
1586 | vga_wcrt(cinfo->regbase, VGA_CRTC_UNDERLINE, 0x00); | |
1da177e4 | 1587 | /* ### add 0x40 for text modes with > 30 MHz pixclock */ |
8503df65 KH |
1588 | /* ext. display controls: ext.adr. wrap */ |
1589 | vga_wcrt(cinfo->regbase, CL_CRT1B, 0x02); | |
1590 | ||
ff0c2642 | 1591 | /* Set/Reset registers: - */ |
8503df65 KH |
1592 | vga_wgfx(cinfo->regbase, VGA_GFX_SR_VALUE, 0x00); |
1593 | /* Set/Reset enable: - */ | |
1594 | vga_wgfx(cinfo->regbase, VGA_GFX_SR_ENABLE, 0x00); | |
1595 | /* Color Compare: - */ | |
1596 | vga_wgfx(cinfo->regbase, VGA_GFX_COMPARE_VALUE, 0x00); | |
1597 | /* Data Rotate: - */ | |
1598 | vga_wgfx(cinfo->regbase, VGA_GFX_DATA_ROTATE, 0x00); | |
1599 | /* Read Map Select: - */ | |
1600 | vga_wgfx(cinfo->regbase, VGA_GFX_PLANE_READ, 0x00); | |
1601 | /* Mode: conf. for 16/4/2 color mode, no odd/even, read/write mode 0 */ | |
1602 | vga_wgfx(cinfo->regbase, VGA_GFX_MODE, 0x00); | |
1603 | /* Miscellaneous: memory map base address, graphics mode */ | |
1604 | vga_wgfx(cinfo->regbase, VGA_GFX_MISC, 0x01); | |
1605 | /* Color Don't care: involve all planes */ | |
1606 | vga_wgfx(cinfo->regbase, VGA_GFX_COMPARE_MASK, 0x0f); | |
1607 | /* Bit Mask: no mask at all */ | |
1608 | vga_wgfx(cinfo->regbase, VGA_GFX_BIT_MASK, 0xff); | |
1b48cb56 | 1609 | |
df3aafd5 KH |
1610 | if (cinfo->btype == BT_ALPINE || cinfo->btype == BT_SD64 || |
1611 | is_laguna(cinfo)) | |
8503df65 KH |
1612 | /* (5434 can't have bit 3 set for bitblt) */ |
1613 | vga_wgfx(cinfo->regbase, CL_GRB, 0x20); | |
1da177e4 | 1614 | else |
8503df65 KH |
1615 | /* Graphics controller mode extensions: finer granularity, |
1616 | * 8byte data latches | |
1617 | */ | |
1618 | vga_wgfx(cinfo->regbase, CL_GRB, 0x28); | |
1619 | ||
1620 | vga_wgfx(cinfo->regbase, CL_GRC, 0xff); /* Color Key compare: - */ | |
1621 | vga_wgfx(cinfo->regbase, CL_GRD, 0x00); /* Color Key compare mask: - */ | |
1622 | vga_wgfx(cinfo->regbase, CL_GRE, 0x00); /* Miscellaneous control: - */ | |
1623 | /* Background color byte 1: - */ | |
1624 | /* vga_wgfx (cinfo->regbase, CL_GR10, 0x00); */ | |
1625 | /* vga_wgfx (cinfo->regbase, CL_GR11, 0x00); */ | |
1626 | ||
1627 | /* Attribute Controller palette registers: "identity mapping" */ | |
1628 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE0, 0x00); | |
1629 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE1, 0x01); | |
1630 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE2, 0x02); | |
1631 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE3, 0x03); | |
1632 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE4, 0x04); | |
1633 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE5, 0x05); | |
1634 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE6, 0x06); | |
1635 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE7, 0x07); | |
1636 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE8, 0x08); | |
1637 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE9, 0x09); | |
1638 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTEA, 0x0a); | |
1639 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTEB, 0x0b); | |
1640 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTEC, 0x0c); | |
1641 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTED, 0x0d); | |
1642 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTEE, 0x0e); | |
1643 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTEF, 0x0f); | |
1644 | ||
1645 | /* Attribute Controller mode: graphics mode */ | |
1646 | vga_wattr(cinfo->regbase, VGA_ATC_MODE, 0x01); | |
1647 | /* Overscan color reg.: reg. 0 */ | |
1648 | vga_wattr(cinfo->regbase, VGA_ATC_OVERSCAN, 0x00); | |
1649 | /* Color Plane enable: Enable all 4 planes */ | |
1650 | vga_wattr(cinfo->regbase, VGA_ATC_PLANE_ENABLE, 0x0f); | |
8503df65 KH |
1651 | /* Color Select: - */ |
1652 | vga_wattr(cinfo->regbase, VGA_ATC_COLOR_PAGE, 0x00); | |
1653 | ||
1654 | WGen(cinfo, VGA_PEL_MSK, 0xff); /* Pixel mask: no mask */ | |
1da177e4 | 1655 | |
8503df65 KH |
1656 | /* BLT Start/status: Blitter reset */ |
1657 | vga_wgfx(cinfo->regbase, CL_GR31, 0x04); | |
1658 | /* - " - : "end-of-reset" */ | |
1659 | vga_wgfx(cinfo->regbase, CL_GR31, 0x00); | |
1da177e4 LT |
1660 | |
1661 | /* misc... */ | |
8503df65 | 1662 | WHDR(cinfo, 0); /* Hidden DAC register: - */ |
1da177e4 LT |
1663 | return; |
1664 | } | |
1665 | ||
8503df65 | 1666 | static void switch_monitor(struct cirrusfb_info *cinfo, int on) |
1da177e4 LT |
1667 | { |
1668 | #ifdef CONFIG_ZORRO /* only works on Zorro boards */ | |
1669 | static int IsOn = 0; /* XXX not ok for multiple boards */ | |
1670 | ||
1da177e4 LT |
1671 | if (cinfo->btype == BT_PICASSO4) |
1672 | return; /* nothing to switch */ | |
1673 | if (cinfo->btype == BT_ALPINE) | |
1674 | return; /* nothing to switch */ | |
1675 | if (cinfo->btype == BT_GD5480) | |
1676 | return; /* nothing to switch */ | |
1677 | if (cinfo->btype == BT_PICASSO) { | |
1678 | if ((on && !IsOn) || (!on && IsOn)) | |
8503df65 | 1679 | WSFR(cinfo, 0xff); |
1da177e4 LT |
1680 | return; |
1681 | } | |
1682 | if (on) { | |
1683 | switch (cinfo->btype) { | |
1684 | case BT_SD64: | |
8503df65 | 1685 | WSFR(cinfo, cinfo->SFR | 0x21); |
1da177e4 LT |
1686 | break; |
1687 | case BT_PICCOLO: | |
8503df65 | 1688 | WSFR(cinfo, cinfo->SFR | 0x28); |
1da177e4 LT |
1689 | break; |
1690 | case BT_SPECTRUM: | |
8503df65 | 1691 | WSFR(cinfo, 0x6f); |
1da177e4 LT |
1692 | break; |
1693 | default: /* do nothing */ break; | |
1694 | } | |
1695 | } else { | |
1696 | switch (cinfo->btype) { | |
1697 | case BT_SD64: | |
8503df65 | 1698 | WSFR(cinfo, cinfo->SFR & 0xde); |
1da177e4 LT |
1699 | break; |
1700 | case BT_PICCOLO: | |
8503df65 | 1701 | WSFR(cinfo, cinfo->SFR & 0xd7); |
1da177e4 LT |
1702 | break; |
1703 | case BT_SPECTRUM: | |
8503df65 | 1704 | WSFR(cinfo, 0x4f); |
1da177e4 | 1705 | break; |
75ed3a17 KH |
1706 | default: /* do nothing */ |
1707 | break; | |
1da177e4 LT |
1708 | } |
1709 | } | |
1da177e4 LT |
1710 | #endif /* CONFIG_ZORRO */ |
1711 | } | |
1712 | ||
1da177e4 LT |
1713 | /******************************************/ |
1714 | /* Linux 2.6-style accelerated functions */ | |
1715 | /******************************************/ | |
1716 | ||
8343c89c KH |
1717 | static int cirrusfb_sync(struct fb_info *info) |
1718 | { | |
1719 | struct cirrusfb_info *cinfo = info->par; | |
1720 | ||
1721 | if (!is_laguna(cinfo)) { | |
1722 | while (vga_rgfx(cinfo->regbase, CL_GR31) & 0x03) | |
1723 | cpu_relax(); | |
1724 | } | |
1725 | return 0; | |
1726 | } | |
1727 | ||
8503df65 KH |
1728 | static void cirrusfb_fillrect(struct fb_info *info, |
1729 | const struct fb_fillrect *region) | |
1da177e4 | 1730 | { |
1da177e4 LT |
1731 | struct fb_fillrect modded; |
1732 | int vxres, vyres; | |
060b6002 KH |
1733 | struct cirrusfb_info *cinfo = info->par; |
1734 | int m = info->var.bits_per_pixel; | |
1735 | u32 color = (info->fix.visual == FB_VISUAL_TRUECOLOR) ? | |
1736 | cinfo->pseudo_palette[region->color] : region->color; | |
1da177e4 LT |
1737 | |
1738 | if (info->state != FBINFO_STATE_RUNNING) | |
1739 | return; | |
1740 | if (info->flags & FBINFO_HWACCEL_DISABLED) { | |
1741 | cfb_fillrect(info, region); | |
1742 | return; | |
1743 | } | |
1744 | ||
1745 | vxres = info->var.xres_virtual; | |
1746 | vyres = info->var.yres_virtual; | |
1747 | ||
1748 | memcpy(&modded, region, sizeof(struct fb_fillrect)); | |
1749 | ||
8503df65 | 1750 | if (!modded.width || !modded.height || |
1da177e4 LT |
1751 | modded.dx >= vxres || modded.dy >= vyres) |
1752 | return; | |
1753 | ||
8503df65 KH |
1754 | if (modded.dx + modded.width > vxres) |
1755 | modded.width = vxres - modded.dx; | |
1756 | if (modded.dy + modded.height > vyres) | |
1757 | modded.height = vyres - modded.dy; | |
1da177e4 | 1758 | |
060b6002 KH |
1759 | cirrusfb_RectFill(cinfo->regbase, |
1760 | info->var.bits_per_pixel, | |
1761 | (region->dx * m) / 8, region->dy, | |
1762 | (region->width * m) / 8, region->height, | |
9e848062 KH |
1763 | color, color, |
1764 | info->fix.line_length, 0x40); | |
1da177e4 LT |
1765 | } |
1766 | ||
8503df65 KH |
1767 | static void cirrusfb_copyarea(struct fb_info *info, |
1768 | const struct fb_copyarea *area) | |
1da177e4 | 1769 | { |
1da177e4 LT |
1770 | struct fb_copyarea modded; |
1771 | u32 vxres, vyres; | |
060b6002 KH |
1772 | struct cirrusfb_info *cinfo = info->par; |
1773 | int m = info->var.bits_per_pixel; | |
1da177e4 LT |
1774 | |
1775 | if (info->state != FBINFO_STATE_RUNNING) | |
1776 | return; | |
1777 | if (info->flags & FBINFO_HWACCEL_DISABLED) { | |
1778 | cfb_copyarea(info, area); | |
1779 | return; | |
1780 | } | |
1781 | ||
1782 | vxres = info->var.xres_virtual; | |
1783 | vyres = info->var.yres_virtual; | |
060b6002 | 1784 | memcpy(&modded, area, sizeof(struct fb_copyarea)); |
1da177e4 | 1785 | |
8503df65 | 1786 | if (!modded.width || !modded.height || |
1da177e4 LT |
1787 | modded.sx >= vxres || modded.sy >= vyres || |
1788 | modded.dx >= vxres || modded.dy >= vyres) | |
1789 | return; | |
1790 | ||
8503df65 KH |
1791 | if (modded.sx + modded.width > vxres) |
1792 | modded.width = vxres - modded.sx; | |
1793 | if (modded.dx + modded.width > vxres) | |
1794 | modded.width = vxres - modded.dx; | |
1795 | if (modded.sy + modded.height > vyres) | |
1796 | modded.height = vyres - modded.sy; | |
1797 | if (modded.dy + modded.height > vyres) | |
1798 | modded.height = vyres - modded.dy; | |
1da177e4 | 1799 | |
060b6002 KH |
1800 | cirrusfb_BitBLT(cinfo->regbase, info->var.bits_per_pixel, |
1801 | (area->sx * m) / 8, area->sy, | |
1802 | (area->dx * m) / 8, area->dy, | |
1803 | (area->width * m) / 8, area->height, | |
0ff1edee | 1804 | info->fix.line_length); |
060b6002 | 1805 | |
1da177e4 LT |
1806 | } |
1807 | ||
8503df65 KH |
1808 | static void cirrusfb_imageblit(struct fb_info *info, |
1809 | const struct fb_image *image) | |
1da177e4 LT |
1810 | { |
1811 | struct cirrusfb_info *cinfo = info->par; | |
7cade31c | 1812 | unsigned char op = (info->var.bits_per_pixel == 24) ? 0xc : 0x4; |
1da177e4 | 1813 | |
9e848062 KH |
1814 | if (info->state != FBINFO_STATE_RUNNING) |
1815 | return; | |
df3aafd5 KH |
1816 | /* Alpine/SD64 does not work at 24bpp ??? */ |
1817 | if (info->flags & FBINFO_HWACCEL_DISABLED || image->depth != 1) | |
1818 | cfb_imageblit(info, image); | |
1819 | else if ((cinfo->btype == BT_ALPINE || cinfo->btype == BT_SD64) && | |
1820 | op == 0xc) | |
9e848062 KH |
1821 | cfb_imageblit(info, image); |
1822 | else { | |
1823 | unsigned size = ((image->width + 7) >> 3) * image->height; | |
1824 | int m = info->var.bits_per_pixel; | |
1825 | u32 fg, bg; | |
1826 | ||
1827 | if (info->var.bits_per_pixel == 8) { | |
1828 | fg = image->fg_color; | |
1829 | bg = image->bg_color; | |
1830 | } else { | |
1831 | fg = ((u32 *)(info->pseudo_palette))[image->fg_color]; | |
1832 | bg = ((u32 *)(info->pseudo_palette))[image->bg_color]; | |
1833 | } | |
7cade31c KH |
1834 | if (info->var.bits_per_pixel == 24) { |
1835 | /* clear background first */ | |
1836 | cirrusfb_RectFill(cinfo->regbase, | |
1837 | info->var.bits_per_pixel, | |
1838 | (image->dx * m) / 8, image->dy, | |
1839 | (image->width * m) / 8, | |
1840 | image->height, | |
1841 | bg, bg, | |
1842 | info->fix.line_length, 0x40); | |
1843 | } | |
9e848062 KH |
1844 | cirrusfb_RectFill(cinfo->regbase, |
1845 | info->var.bits_per_pixel, | |
1846 | (image->dx * m) / 8, image->dy, | |
1847 | (image->width * m) / 8, image->height, | |
1848 | fg, bg, | |
7cade31c | 1849 | info->fix.line_length, op); |
9e848062 KH |
1850 | memcpy(info->screen_base, image->data, size); |
1851 | } | |
1da177e4 LT |
1852 | } |
1853 | ||
1da177e4 | 1854 | #ifdef CONFIG_PCI |
8503df65 | 1855 | static int release_io_ports; |
1da177e4 LT |
1856 | |
1857 | /* Pulled the logic from XFree86 Cirrus driver to get the memory size, | |
1858 | * based on the DRAM bandwidth bit and DRAM bank switching bit. This | |
1859 | * works with 1MB, 2MB and 4MB configurations (which the Motorola boards | |
1860 | * seem to have. */ | |
48c68c4f GKH |
1861 | static unsigned int cirrusfb_get_memsize(struct fb_info *info, |
1862 | u8 __iomem *regbase) | |
1da177e4 LT |
1863 | { |
1864 | unsigned long mem; | |
55a4ea6a | 1865 | struct cirrusfb_info *cinfo = info->par; |
1da177e4 | 1866 | |
78d780e0 | 1867 | if (is_laguna(cinfo)) { |
55a4ea6a KH |
1868 | unsigned char SR14 = vga_rseq(regbase, CL_SEQR14); |
1869 | ||
1870 | mem = ((SR14 & 7) + 1) << 20; | |
1871 | } else { | |
1872 | unsigned char SRF = vga_rseq(regbase, CL_SEQRF); | |
1873 | switch ((SRF & 0x18)) { | |
1874 | case 0x08: | |
1875 | mem = 512 * 1024; | |
1876 | break; | |
1877 | case 0x10: | |
1878 | mem = 1024 * 1024; | |
1879 | break; | |
1880 | /* 64-bit DRAM data bus width; assume 2MB. | |
1881 | * Also indicates 2MB memory on the 5430. | |
1882 | */ | |
1883 | case 0x18: | |
1884 | mem = 2048 * 1024; | |
1885 | break; | |
1886 | default: | |
1887 | dev_warn(info->device, "Unknown memory size!\n"); | |
1888 | mem = 1024 * 1024; | |
1889 | } | |
1890 | /* If DRAM bank switching is enabled, there must be | |
1891 | * twice as much memory installed. (4MB on the 5434) | |
1892 | */ | |
df3aafd5 | 1893 | if (cinfo->btype != BT_ALPINE && (SRF & 0x80) != 0) |
55a4ea6a | 1894 | mem *= 2; |
1da177e4 | 1895 | } |
8503df65 | 1896 | |
1da177e4 | 1897 | /* TODO: Handling of GD5446/5480 (see XF86 sources ...) */ |
1da177e4 LT |
1898 | return mem; |
1899 | } | |
1900 | ||
8503df65 KH |
1901 | static void get_pci_addrs(const struct pci_dev *pdev, |
1902 | unsigned long *display, unsigned long *registers) | |
1da177e4 | 1903 | { |
8503df65 KH |
1904 | assert(pdev != NULL); |
1905 | assert(display != NULL); | |
1906 | assert(registers != NULL); | |
1da177e4 | 1907 | |
1da177e4 LT |
1908 | *display = 0; |
1909 | *registers = 0; | |
1910 | ||
1911 | /* This is a best-guess for now */ | |
1912 | ||
1913 | if (pci_resource_flags(pdev, 0) & IORESOURCE_IO) { | |
1914 | *display = pci_resource_start(pdev, 1); | |
1915 | *registers = pci_resource_start(pdev, 0); | |
1916 | } else { | |
1917 | *display = pci_resource_start(pdev, 0); | |
1918 | *registers = pci_resource_start(pdev, 1); | |
1919 | } | |
1920 | ||
8503df65 | 1921 | assert(*display != 0); |
1da177e4 LT |
1922 | } |
1923 | ||
9199ec5c | 1924 | static void cirrusfb_pci_unmap(struct fb_info *info) |
1da177e4 | 1925 | { |
64beab14 | 1926 | struct pci_dev *pdev = to_pci_dev(info->device); |
6e30fc08 | 1927 | struct cirrusfb_info *cinfo = info->par; |
1da177e4 | 1928 | |
6e30fc08 KH |
1929 | if (cinfo->laguna_mmio == NULL) |
1930 | iounmap(cinfo->laguna_mmio); | |
9199ec5c | 1931 | iounmap(info->screen_base); |
1da177e4 LT |
1932 | #if 0 /* if system didn't claim this region, we would... */ |
1933 | release_mem_region(0xA0000, 65535); | |
1934 | #endif | |
1935 | if (release_io_ports) | |
1936 | release_region(0x3C0, 32); | |
1937 | pci_release_regions(pdev); | |
1da177e4 LT |
1938 | } |
1939 | #endif /* CONFIG_PCI */ | |
1940 | ||
1da177e4 | 1941 | #ifdef CONFIG_ZORRO |
f5ee051e | 1942 | static void cirrusfb_zorro_unmap(struct fb_info *info) |
1da177e4 | 1943 | { |
d91f5bb6 | 1944 | struct cirrusfb_info *cinfo = info->par; |
64beab14 KH |
1945 | struct zorro_dev *zdev = to_zorro_dev(info->device); |
1946 | ||
0e0d1336 | 1947 | if (info->fix.smem_start > 16 * MB_) |
9199ec5c | 1948 | iounmap(info->screen_base); |
0e0d1336 GU |
1949 | if (info->fix.mmio_start > 16 * MB_) |
1950 | iounmap(cinfo->regbase); | |
1951 | ||
1952 | zorro_release_device(zdev); | |
1da177e4 LT |
1953 | } |
1954 | #endif /* CONFIG_ZORRO */ | |
1955 | ||
48c329e9 KH |
1956 | /* function table of the above functions */ |
1957 | static struct fb_ops cirrusfb_ops = { | |
1958 | .owner = THIS_MODULE, | |
1959 | .fb_open = cirrusfb_open, | |
1960 | .fb_release = cirrusfb_release, | |
1961 | .fb_setcolreg = cirrusfb_setcolreg, | |
1962 | .fb_check_var = cirrusfb_check_var, | |
1963 | .fb_set_par = cirrusfb_set_par, | |
1964 | .fb_pan_display = cirrusfb_pan_display, | |
1965 | .fb_blank = cirrusfb_blank, | |
1966 | .fb_fillrect = cirrusfb_fillrect, | |
1967 | .fb_copyarea = cirrusfb_copyarea, | |
8343c89c | 1968 | .fb_sync = cirrusfb_sync, |
48c329e9 KH |
1969 | .fb_imageblit = cirrusfb_imageblit, |
1970 | }; | |
1971 | ||
48c68c4f | 1972 | static int cirrusfb_set_fbinfo(struct fb_info *info) |
1da177e4 | 1973 | { |
9199ec5c | 1974 | struct cirrusfb_info *cinfo = info->par; |
1da177e4 LT |
1975 | struct fb_var_screeninfo *var = &info->var; |
1976 | ||
1da177e4 LT |
1977 | info->pseudo_palette = cinfo->pseudo_palette; |
1978 | info->flags = FBINFO_DEFAULT | |
1979 | | FBINFO_HWACCEL_XPAN | |
1980 | | FBINFO_HWACCEL_YPAN | |
1981 | | FBINFO_HWACCEL_FILLRECT | |
9e848062 | 1982 | | FBINFO_HWACCEL_IMAGEBLIT |
1da177e4 | 1983 | | FBINFO_HWACCEL_COPYAREA; |
614c0dc9 | 1984 | if (noaccel || is_laguna(cinfo)) { |
1da177e4 | 1985 | info->flags |= FBINFO_HWACCEL_DISABLED; |
614c0dc9 KH |
1986 | info->fix.accel = FB_ACCEL_NONE; |
1987 | } else | |
1988 | info->fix.accel = FB_ACCEL_CIRRUS_ALPINE; | |
1989 | ||
1da177e4 | 1990 | info->fbops = &cirrusfb_ops; |
9e848062 | 1991 | |
1da177e4 LT |
1992 | if (cinfo->btype == BT_GD5480) { |
1993 | if (var->bits_per_pixel == 16) | |
1994 | info->screen_base += 1 * MB_; | |
1cea9a9a | 1995 | if (var->bits_per_pixel == 32) |
1da177e4 LT |
1996 | info->screen_base += 2 * MB_; |
1997 | } | |
1998 | ||
1999 | /* Fill fix common fields */ | |
2000 | strlcpy(info->fix.id, cirrusfb_board_info[cinfo->btype].name, | |
2001 | sizeof(info->fix.id)); | |
2002 | ||
2003 | /* monochrome: only 1 memory plane */ | |
2004 | /* 8 bit and above: Use whole memory area */ | |
9199ec5c KH |
2005 | info->fix.smem_len = info->screen_size; |
2006 | if (var->bits_per_pixel == 1) | |
2007 | info->fix.smem_len /= 4; | |
1da177e4 | 2008 | info->fix.type_aux = 0; |
1da177e4 LT |
2009 | info->fix.xpanstep = 1; |
2010 | info->fix.ypanstep = 1; | |
2011 | info->fix.ywrapstep = 0; | |
1da177e4 LT |
2012 | |
2013 | /* FIXME: map region at 0xB8000 if available, fill in here */ | |
1da177e4 | 2014 | info->fix.mmio_len = 0; |
1da177e4 LT |
2015 | |
2016 | fb_alloc_cmap(&info->cmap, 256, 0); | |
2017 | ||
2018 | return 0; | |
2019 | } | |
2020 | ||
48c68c4f | 2021 | static int cirrusfb_register(struct fb_info *info) |
1da177e4 | 2022 | { |
9199ec5c | 2023 | struct cirrusfb_info *cinfo = info->par; |
1da177e4 | 2024 | int err; |
1da177e4 LT |
2025 | |
2026 | /* sanity checks */ | |
48c329e9 | 2027 | assert(cinfo->btype != BT_NONE); |
1da177e4 | 2028 | |
a1d35a7a KH |
2029 | /* set all the vital stuff */ |
2030 | cirrusfb_set_fbinfo(info); | |
2031 | ||
75ed3a17 | 2032 | dev_dbg(info->device, "(RAM start set to: 0x%p)\n", info->screen_base); |
1da177e4 | 2033 | |
a1d35a7a KH |
2034 | err = fb_find_mode(&info->var, info, mode_option, NULL, 0, NULL, 8); |
2035 | if (!err) { | |
75ed3a17 | 2036 | dev_dbg(info->device, "wrong initial video mode\n"); |
a1d35a7a KH |
2037 | err = -EINVAL; |
2038 | goto err_dealloc_cmap; | |
2039 | } | |
2040 | ||
1da177e4 LT |
2041 | info->var.activate = FB_ACTIVATE_NOW; |
2042 | ||
99a45847 | 2043 | err = cirrusfb_check_var(&info->var, info); |
1da177e4 LT |
2044 | if (err < 0) { |
2045 | /* should never happen */ | |
75ed3a17 KH |
2046 | dev_dbg(info->device, |
2047 | "choking on default var... umm, no good.\n"); | |
a1d35a7a | 2048 | goto err_dealloc_cmap; |
1da177e4 LT |
2049 | } |
2050 | ||
1da177e4 LT |
2051 | err = register_framebuffer(info); |
2052 | if (err < 0) { | |
75ed3a17 KH |
2053 | dev_err(info->device, |
2054 | "could not register fb device; err = %d!\n", err); | |
1da177e4 LT |
2055 | goto err_dealloc_cmap; |
2056 | } | |
2057 | ||
1da177e4 LT |
2058 | return 0; |
2059 | ||
2060 | err_dealloc_cmap: | |
2061 | fb_dealloc_cmap(&info->cmap); | |
1da177e4 LT |
2062 | return err; |
2063 | } | |
2064 | ||
48c68c4f | 2065 | static void cirrusfb_cleanup(struct fb_info *info) |
1da177e4 LT |
2066 | { |
2067 | struct cirrusfb_info *cinfo = info->par; | |
1da177e4 | 2068 | |
8503df65 | 2069 | switch_monitor(cinfo, 0); |
8503df65 KH |
2070 | unregister_framebuffer(info); |
2071 | fb_dealloc_cmap(&info->cmap); | |
75ed3a17 | 2072 | dev_dbg(info->device, "Framebuffer unregistered\n"); |
9199ec5c | 2073 | cinfo->unmap(info); |
060b6002 | 2074 | framebuffer_release(info); |
1da177e4 LT |
2075 | } |
2076 | ||
1da177e4 | 2077 | #ifdef CONFIG_PCI |
48c68c4f GKH |
2078 | static int cirrusfb_pci_register(struct pci_dev *pdev, |
2079 | const struct pci_device_id *ent) | |
1da177e4 LT |
2080 | { |
2081 | struct cirrusfb_info *cinfo; | |
2082 | struct fb_info *info; | |
1da177e4 LT |
2083 | unsigned long board_addr, board_size; |
2084 | int ret; | |
2085 | ||
2086 | ret = pci_enable_device(pdev); | |
2087 | if (ret < 0) { | |
2088 | printk(KERN_ERR "cirrusfb: Cannot enable PCI device\n"); | |
2089 | goto err_out; | |
2090 | } | |
2091 | ||
2092 | info = framebuffer_alloc(sizeof(struct cirrusfb_info), &pdev->dev); | |
2093 | if (!info) { | |
2094 | printk(KERN_ERR "cirrusfb: could not allocate memory\n"); | |
2095 | ret = -ENOMEM; | |
78d780e0 | 2096 | goto err_out; |
1da177e4 LT |
2097 | } |
2098 | ||
2099 | cinfo = info->par; | |
48c329e9 | 2100 | cinfo->btype = (enum cirrus_board) ent->driver_data; |
1da177e4 | 2101 | |
75ed3a17 KH |
2102 | dev_dbg(info->device, |
2103 | " Found PCI device, base address 0 is 0x%Lx, btype set to %d\n", | |
48c329e9 | 2104 | (unsigned long long)pdev->resource[0].start, cinfo->btype); |
75ed3a17 KH |
2105 | dev_dbg(info->device, " base address 1 is 0x%Lx\n", |
2106 | (unsigned long long)pdev->resource[1].start); | |
1da177e4 | 2107 | |
933ee711 PB |
2108 | dev_dbg(info->device, |
2109 | "Attempt to get PCI info for Cirrus Graphics Card\n"); | |
2110 | get_pci_addrs(pdev, &board_addr, &info->fix.mmio_start); | |
2111 | /* FIXME: this forces VGA. alternatives? */ | |
2112 | cinfo->regbase = NULL; | |
2113 | cinfo->laguna_mmio = ioremap(info->fix.mmio_start, 0x1000); | |
1da177e4 | 2114 | |
75ed3a17 | 2115 | dev_dbg(info->device, "Board address: 0x%lx, register address: 0x%lx\n", |
9199ec5c | 2116 | board_addr, info->fix.mmio_start); |
1da177e4 | 2117 | |
48c329e9 | 2118 | board_size = (cinfo->btype == BT_GD5480) ? |
75ed3a17 | 2119 | 32 * MB_ : cirrusfb_get_memsize(info, cinfo->regbase); |
1da177e4 LT |
2120 | |
2121 | ret = pci_request_regions(pdev, "cirrusfb"); | |
8503df65 | 2122 | if (ret < 0) { |
75ed3a17 KH |
2123 | dev_err(info->device, "cannot reserve region 0x%lx, abort\n", |
2124 | board_addr); | |
1da177e4 LT |
2125 | goto err_release_fb; |
2126 | } | |
2127 | #if 0 /* if the system didn't claim this region, we would... */ | |
2128 | if (!request_mem_region(0xA0000, 65535, "cirrusfb")) { | |
75ed3a17 KH |
2129 | dev_err(info->device, "cannot reserve region 0x%lx, abort\n", |
2130 | 0xA0000L); | |
1da177e4 LT |
2131 | ret = -EBUSY; |
2132 | goto err_release_regions; | |
2133 | } | |
2134 | #endif | |
2135 | if (request_region(0x3C0, 32, "cirrusfb")) | |
2136 | release_io_ports = 1; | |
2137 | ||
9199ec5c KH |
2138 | info->screen_base = ioremap(board_addr, board_size); |
2139 | if (!info->screen_base) { | |
1da177e4 LT |
2140 | ret = -EIO; |
2141 | goto err_release_legacy; | |
2142 | } | |
2143 | ||
9199ec5c KH |
2144 | info->fix.smem_start = board_addr; |
2145 | info->screen_size = board_size; | |
1da177e4 LT |
2146 | cinfo->unmap = cirrusfb_pci_unmap; |
2147 | ||
75ed3a17 KH |
2148 | dev_info(info->device, |
2149 | "Cirrus Logic chipset on PCI bus, RAM (%lu kB) at 0x%lx\n", | |
2150 | info->screen_size >> 10, board_addr); | |
1da177e4 LT |
2151 | pci_set_drvdata(pdev, info); |
2152 | ||
9199ec5c | 2153 | ret = cirrusfb_register(info); |
78d780e0 KH |
2154 | if (!ret) |
2155 | return 0; | |
1da177e4 | 2156 | |
78d780e0 | 2157 | iounmap(info->screen_base); |
1da177e4 LT |
2158 | err_release_legacy: |
2159 | if (release_io_ports) | |
2160 | release_region(0x3C0, 32); | |
2161 | #if 0 | |
2162 | release_mem_region(0xA0000, 65535); | |
2163 | err_release_regions: | |
2164 | #endif | |
2165 | pci_release_regions(pdev); | |
2166 | err_release_fb: | |
78d780e0 | 2167 | if (cinfo->laguna_mmio != NULL) |
6e30fc08 | 2168 | iounmap(cinfo->laguna_mmio); |
1da177e4 | 2169 | framebuffer_release(info); |
1da177e4 LT |
2170 | err_out: |
2171 | return ret; | |
2172 | } | |
2173 | ||
48c68c4f | 2174 | static void cirrusfb_pci_unregister(struct pci_dev *pdev) |
1da177e4 LT |
2175 | { |
2176 | struct fb_info *info = pci_get_drvdata(pdev); | |
1da177e4 | 2177 | |
8503df65 | 2178 | cirrusfb_cleanup(info); |
1da177e4 LT |
2179 | } |
2180 | ||
2181 | static struct pci_driver cirrusfb_pci_driver = { | |
2182 | .name = "cirrusfb", | |
2183 | .id_table = cirrusfb_pci_table, | |
2184 | .probe = cirrusfb_pci_register, | |
48c68c4f | 2185 | .remove = cirrusfb_pci_unregister, |
1da177e4 LT |
2186 | #ifdef CONFIG_PM |
2187 | #if 0 | |
2188 | .suspend = cirrusfb_pci_suspend, | |
2189 | .resume = cirrusfb_pci_resume, | |
2190 | #endif | |
2191 | #endif | |
2192 | }; | |
2193 | #endif /* CONFIG_PCI */ | |
2194 | ||
1da177e4 | 2195 | #ifdef CONFIG_ZORRO |
48c68c4f GKH |
2196 | static int cirrusfb_zorro_register(struct zorro_dev *z, |
2197 | const struct zorro_device_id *ent) | |
1da177e4 | 2198 | { |
1da177e4 | 2199 | struct fb_info *info; |
0e0d1336 GU |
2200 | int error; |
2201 | const struct zorrocl *zcl; | |
7345de32 | 2202 | enum cirrus_board btype; |
0e0d1336 GU |
2203 | unsigned long regbase, ramsize, rambase; |
2204 | struct cirrusfb_info *cinfo; | |
1da177e4 LT |
2205 | |
2206 | info = framebuffer_alloc(sizeof(struct cirrusfb_info), &z->dev); | |
2207 | if (!info) { | |
8503df65 | 2208 | printk(KERN_ERR "cirrusfb: could not allocate memory\n"); |
0e0d1336 | 2209 | return -ENOMEM; |
1da177e4 LT |
2210 | } |
2211 | ||
0e0d1336 GU |
2212 | zcl = (const struct zorrocl *)ent->driver_data; |
2213 | btype = zcl->type; | |
2214 | regbase = zorro_resource_start(z) + zcl->regoffset; | |
2215 | ramsize = zcl->ramsize; | |
2216 | if (ramsize) { | |
2217 | rambase = zorro_resource_start(z) + zcl->ramoffset; | |
e78bb882 GU |
2218 | if (zorro_resource_len(z) == 64 * MB_) { |
2219 | /* Quirk for 64 MiB Picasso IV */ | |
2220 | rambase += zcl->ramoffset; | |
2221 | } | |
0e0d1336 GU |
2222 | } else { |
2223 | struct zorro_dev *ram = zorro_find_device(zcl->ramid, NULL); | |
2224 | if (!ram || !zorro_resource_len(ram)) { | |
2225 | dev_err(info->device, "No video RAM found\n"); | |
2226 | error = -ENODEV; | |
2227 | goto err_release_fb; | |
2228 | } | |
2229 | rambase = zorro_resource_start(ram); | |
2230 | ramsize = zorro_resource_len(ram); | |
17bdf489 GU |
2231 | if (zcl->ramid2 && |
2232 | (ram = zorro_find_device(zcl->ramid2, NULL))) { | |
2233 | if (zorro_resource_start(ram) != rambase + ramsize) { | |
2234 | dev_warn(info->device, | |
2235 | "Skipping non-contiguous RAM at %pR\n", | |
2236 | &ram->resource); | |
2237 | } else { | |
2238 | ramsize += zorro_resource_len(ram); | |
2239 | } | |
2240 | } | |
0e0d1336 | 2241 | } |
1da177e4 | 2242 | |
0e0d1336 GU |
2243 | dev_info(info->device, |
2244 | "%s board detected, REG at 0x%lx, %lu MiB RAM at 0x%lx\n", | |
2245 | cirrusfb_board_info[btype].name, regbase, ramsize / MB_, | |
2246 | rambase); | |
1da177e4 LT |
2247 | |
2248 | if (!zorro_request_device(z, "cirrusfb")) { | |
0e0d1336 GU |
2249 | dev_err(info->device, "Cannot reserve %pR\n", &z->resource); |
2250 | error = -EBUSY; | |
1da177e4 LT |
2251 | goto err_release_fb; |
2252 | } | |
2253 | ||
0e0d1336 GU |
2254 | cinfo = info->par; |
2255 | cinfo->btype = btype; | |
1da177e4 | 2256 | |
0e0d1336 GU |
2257 | info->fix.mmio_start = regbase; |
2258 | cinfo->regbase = regbase > 16 * MB_ ? ioremap(regbase, 64 * 1024) | |
6112ea08 | 2259 | : ZTWO_VADDR(regbase); |
0e0d1336 GU |
2260 | if (!cinfo->regbase) { |
2261 | dev_err(info->device, "Cannot map registers\n"); | |
2262 | error = -EIO; | |
2263 | goto err_release_dev; | |
2264 | } | |
1da177e4 | 2265 | |
0e0d1336 GU |
2266 | info->fix.smem_start = rambase; |
2267 | info->screen_size = ramsize; | |
2268 | info->screen_base = rambase > 16 * MB_ ? ioremap(rambase, ramsize) | |
6112ea08 | 2269 | : ZTWO_VADDR(rambase); |
0e0d1336 GU |
2270 | if (!info->screen_base) { |
2271 | dev_err(info->device, "Cannot map video RAM\n"); | |
2272 | error = -EIO; | |
2273 | goto err_unmap_reg; | |
1da177e4 | 2274 | } |
0e0d1336 | 2275 | |
1da177e4 LT |
2276 | cinfo->unmap = cirrusfb_zorro_unmap; |
2277 | ||
75ed3a17 | 2278 | dev_info(info->device, |
0e0d1336 GU |
2279 | "Cirrus Logic chipset on Zorro bus, RAM (%lu MiB) at 0x%lx\n", |
2280 | ramsize / MB_, rambase); | |
1da177e4 | 2281 | |
8f19e15b KH |
2282 | /* MCLK select etc. */ |
2283 | if (cirrusfb_board_info[btype].init_sr1f) | |
2284 | vga_wseq(cinfo->regbase, CL_SEQR1F, | |
2285 | cirrusfb_board_info[btype].sr1f); | |
2286 | ||
0e0d1336 GU |
2287 | error = cirrusfb_register(info); |
2288 | if (error) { | |
2289 | dev_err(info->device, "Failed to register device, error %d\n", | |
2290 | error); | |
2291 | goto err_unmap_ram; | |
2292 | } | |
bc5d8ac0 | 2293 | |
0e0d1336 GU |
2294 | zorro_set_drvdata(z, info); |
2295 | return 0; | |
bc5d8ac0 | 2296 | |
0e0d1336 GU |
2297 | err_unmap_ram: |
2298 | if (rambase > 16 * MB_) | |
bc5d8ac0 | 2299 | iounmap(info->screen_base); |
1da177e4 | 2300 | |
0e0d1336 GU |
2301 | err_unmap_reg: |
2302 | if (regbase > 16 * MB_) | |
2303 | iounmap(cinfo->regbase); | |
2304 | err_release_dev: | |
2305 | zorro_release_device(z); | |
1da177e4 LT |
2306 | err_release_fb: |
2307 | framebuffer_release(info); | |
0e0d1336 | 2308 | return error; |
1da177e4 LT |
2309 | } |
2310 | ||
48c68c4f | 2311 | void cirrusfb_zorro_unregister(struct zorro_dev *z) |
1da177e4 LT |
2312 | { |
2313 | struct fb_info *info = zorro_get_drvdata(z); | |
1da177e4 | 2314 | |
8503df65 | 2315 | cirrusfb_cleanup(info); |
0e0d1336 | 2316 | zorro_set_drvdata(z, NULL); |
1da177e4 LT |
2317 | } |
2318 | ||
2319 | static struct zorro_driver cirrusfb_zorro_driver = { | |
2320 | .name = "cirrusfb", | |
2321 | .id_table = cirrusfb_zorro_table, | |
2322 | .probe = cirrusfb_zorro_register, | |
48c68c4f | 2323 | .remove = cirrusfb_zorro_unregister, |
1da177e4 LT |
2324 | }; |
2325 | #endif /* CONFIG_ZORRO */ | |
2326 | ||
1da177e4 | 2327 | #ifndef MODULE |
75ed3a17 KH |
2328 | static int __init cirrusfb_setup(char *options) |
2329 | { | |
ee11940f | 2330 | char *this_opt; |
1da177e4 | 2331 | |
1da177e4 LT |
2332 | if (!options || !*options) |
2333 | return 0; | |
2334 | ||
8503df65 | 2335 | while ((this_opt = strsep(&options, ",")) != NULL) { |
a1d35a7a KH |
2336 | if (!*this_opt) |
2337 | continue; | |
1da177e4 | 2338 | |
1da177e4 LT |
2339 | if (!strcmp(this_opt, "noaccel")) |
2340 | noaccel = 1; | |
a1d35a7a KH |
2341 | else if (!strncmp(this_opt, "mode:", 5)) |
2342 | mode_option = this_opt + 5; | |
2343 | else | |
2344 | mode_option = this_opt; | |
1da177e4 LT |
2345 | } |
2346 | return 0; | |
2347 | } | |
2348 | #endif | |
2349 | ||
1da177e4 LT |
2350 | /* |
2351 | * Modularization | |
2352 | */ | |
2353 | ||
2354 | MODULE_AUTHOR("Copyright 1999,2000 Jeff Garzik <jgarzik@pobox.com>"); | |
2355 | MODULE_DESCRIPTION("Accelerated FBDev driver for Cirrus Logic chips"); | |
2356 | MODULE_LICENSE("GPL"); | |
2357 | ||
48c329e9 KH |
2358 | static int __init cirrusfb_init(void) |
2359 | { | |
2360 | int error = 0; | |
2361 | ||
2362 | #ifndef MODULE | |
2363 | char *option = NULL; | |
2364 | ||
2365 | if (fb_get_options("cirrusfb", &option)) | |
2366 | return -ENODEV; | |
2367 | cirrusfb_setup(option); | |
2368 | #endif | |
2369 | ||
2370 | #ifdef CONFIG_ZORRO | |
2371 | error |= zorro_register_driver(&cirrusfb_zorro_driver); | |
2372 | #endif | |
2373 | #ifdef CONFIG_PCI | |
2374 | error |= pci_register_driver(&cirrusfb_pci_driver); | |
2375 | #endif | |
2376 | return error; | |
2377 | } | |
2378 | ||
8503df65 | 2379 | static void __exit cirrusfb_exit(void) |
1da177e4 LT |
2380 | { |
2381 | #ifdef CONFIG_PCI | |
2382 | pci_unregister_driver(&cirrusfb_pci_driver); | |
2383 | #endif | |
2384 | #ifdef CONFIG_ZORRO | |
2385 | zorro_unregister_driver(&cirrusfb_zorro_driver); | |
2386 | #endif | |
2387 | } | |
2388 | ||
2389 | module_init(cirrusfb_init); | |
2390 | ||
a1d35a7a KH |
2391 | module_param(mode_option, charp, 0); |
2392 | MODULE_PARM_DESC(mode_option, "Initial video mode e.g. '648x480-8@60'"); | |
55a0dd83 KH |
2393 | module_param(noaccel, bool, 0); |
2394 | MODULE_PARM_DESC(noaccel, "Disable acceleration"); | |
a1d35a7a | 2395 | |
1da177e4 LT |
2396 | #ifdef MODULE |
2397 | module_exit(cirrusfb_exit); | |
2398 | #endif | |
2399 | ||
1da177e4 LT |
2400 | /**********************************************************************/ |
2401 | /* about the following functions - I have used the same names for the */ | |
2402 | /* functions as Markus Wild did in his Retina driver for NetBSD as */ | |
2403 | /* they just made sense for this purpose. Apart from that, I wrote */ | |
8503df65 | 2404 | /* these functions myself. */ |
1da177e4 LT |
2405 | /**********************************************************************/ |
2406 | ||
2407 | /*** WGen() - write into one of the external/general registers ***/ | |
8503df65 | 2408 | static void WGen(const struct cirrusfb_info *cinfo, |
1da177e4 LT |
2409 | int regnum, unsigned char val) |
2410 | { | |
2411 | unsigned long regofs = 0; | |
2412 | ||
2413 | if (cinfo->btype == BT_PICASSO) { | |
2414 | /* Picasso II specific hack */ | |
8503df65 KH |
2415 | /* if (regnum == VGA_PEL_IR || regnum == VGA_PEL_D || |
2416 | regnum == CL_VSSM2) */ | |
1da177e4 LT |
2417 | if (regnum == VGA_PEL_IR || regnum == VGA_PEL_D) |
2418 | regofs = 0xfff; | |
2419 | } | |
2420 | ||
8503df65 | 2421 | vga_w(cinfo->regbase, regofs + regnum, val); |
1da177e4 LT |
2422 | } |
2423 | ||
2424 | /*** RGen() - read out one of the external/general registers ***/ | |
8503df65 | 2425 | static unsigned char RGen(const struct cirrusfb_info *cinfo, int regnum) |
1da177e4 LT |
2426 | { |
2427 | unsigned long regofs = 0; | |
2428 | ||
2429 | if (cinfo->btype == BT_PICASSO) { | |
2430 | /* Picasso II specific hack */ | |
8503df65 KH |
2431 | /* if (regnum == VGA_PEL_IR || regnum == VGA_PEL_D || |
2432 | regnum == CL_VSSM2) */ | |
1da177e4 LT |
2433 | if (regnum == VGA_PEL_IR || regnum == VGA_PEL_D) |
2434 | regofs = 0xfff; | |
2435 | } | |
2436 | ||
8503df65 | 2437 | return vga_r(cinfo->regbase, regofs + regnum); |
1da177e4 LT |
2438 | } |
2439 | ||
2440 | /*** AttrOn() - turn on VideoEnable for Attribute controller ***/ | |
8503df65 | 2441 | static void AttrOn(const struct cirrusfb_info *cinfo) |
1da177e4 | 2442 | { |
8503df65 | 2443 | assert(cinfo != NULL); |
1da177e4 | 2444 | |
8503df65 | 2445 | if (vga_rcrt(cinfo->regbase, CL_CRT24) & 0x80) { |
1da177e4 LT |
2446 | /* if we're just in "write value" mode, write back the */ |
2447 | /* same value as before to not modify anything */ | |
8503df65 KH |
2448 | vga_w(cinfo->regbase, VGA_ATT_IW, |
2449 | vga_r(cinfo->regbase, VGA_ATT_R)); | |
1da177e4 LT |
2450 | } |
2451 | /* turn on video bit */ | |
8503df65 KH |
2452 | /* vga_w(cinfo->regbase, VGA_ATT_IW, 0x20); */ |
2453 | vga_w(cinfo->regbase, VGA_ATT_IW, 0x33); | |
1da177e4 LT |
2454 | |
2455 | /* dummy write on Reg0 to be on "write index" mode next time */ | |
8503df65 | 2456 | vga_w(cinfo->regbase, VGA_ATT_IW, 0x00); |
1da177e4 LT |
2457 | } |
2458 | ||
2459 | /*** WHDR() - write into the Hidden DAC register ***/ | |
2460 | /* as the HDR is the only extension register that requires special treatment | |
2461 | * (the other extension registers are accessible just like the "ordinary" | |
2462 | * registers of their functional group) here is a specialized routine for | |
2463 | * accessing the HDR | |
2464 | */ | |
8503df65 | 2465 | static void WHDR(const struct cirrusfb_info *cinfo, unsigned char val) |
1da177e4 LT |
2466 | { |
2467 | unsigned char dummy; | |
2468 | ||
78d780e0 | 2469 | if (is_laguna(cinfo)) |
1b48cb56 | 2470 | return; |
1da177e4 LT |
2471 | if (cinfo->btype == BT_PICASSO) { |
2472 | /* Klaus' hint for correct access to HDR on some boards */ | |
2473 | /* first write 0 to pixel mask (3c6) */ | |
8503df65 KH |
2474 | WGen(cinfo, VGA_PEL_MSK, 0x00); |
2475 | udelay(200); | |
1da177e4 | 2476 | /* next read dummy from pixel address (3c8) */ |
8503df65 KH |
2477 | dummy = RGen(cinfo, VGA_PEL_IW); |
2478 | udelay(200); | |
1da177e4 LT |
2479 | } |
2480 | /* now do the usual stuff to access the HDR */ | |
2481 | ||
8503df65 KH |
2482 | dummy = RGen(cinfo, VGA_PEL_MSK); |
2483 | udelay(200); | |
2484 | dummy = RGen(cinfo, VGA_PEL_MSK); | |
2485 | udelay(200); | |
2486 | dummy = RGen(cinfo, VGA_PEL_MSK); | |
2487 | udelay(200); | |
2488 | dummy = RGen(cinfo, VGA_PEL_MSK); | |
2489 | udelay(200); | |
1da177e4 | 2490 | |
8503df65 KH |
2491 | WGen(cinfo, VGA_PEL_MSK, val); |
2492 | udelay(200); | |
1da177e4 LT |
2493 | |
2494 | if (cinfo->btype == BT_PICASSO) { | |
2495 | /* now first reset HDR access counter */ | |
8503df65 KH |
2496 | dummy = RGen(cinfo, VGA_PEL_IW); |
2497 | udelay(200); | |
1da177e4 LT |
2498 | |
2499 | /* and at the end, restore the mask value */ | |
2500 | /* ## is this mask always 0xff? */ | |
8503df65 KH |
2501 | WGen(cinfo, VGA_PEL_MSK, 0xff); |
2502 | udelay(200); | |
1da177e4 LT |
2503 | } |
2504 | } | |
2505 | ||
1da177e4 | 2506 | /*** WSFR() - write to the "special function register" (SFR) ***/ |
8503df65 | 2507 | static void WSFR(struct cirrusfb_info *cinfo, unsigned char val) |
1da177e4 LT |
2508 | { |
2509 | #ifdef CONFIG_ZORRO | |
8503df65 | 2510 | assert(cinfo->regbase != NULL); |
1da177e4 | 2511 | cinfo->SFR = val; |
8503df65 | 2512 | z_writeb(val, cinfo->regbase + 0x8000); |
1da177e4 LT |
2513 | #endif |
2514 | } | |
2515 | ||
2516 | /* The Picasso has a second register for switching the monitor bit */ | |
8503df65 | 2517 | static void WSFR2(struct cirrusfb_info *cinfo, unsigned char val) |
1da177e4 LT |
2518 | { |
2519 | #ifdef CONFIG_ZORRO | |
2520 | /* writing an arbitrary value to this one causes the monitor switcher */ | |
2521 | /* to flip to Amiga display */ | |
8503df65 | 2522 | assert(cinfo->regbase != NULL); |
1da177e4 | 2523 | cinfo->SFR = val; |
8503df65 | 2524 | z_writeb(val, cinfo->regbase + 0x9000); |
1da177e4 LT |
2525 | #endif |
2526 | } | |
2527 | ||
1da177e4 | 2528 | /*** WClut - set CLUT entry (range: 0..63) ***/ |
8503df65 | 2529 | static void WClut(struct cirrusfb_info *cinfo, unsigned char regnum, unsigned char red, |
1da177e4 LT |
2530 | unsigned char green, unsigned char blue) |
2531 | { | |
2532 | unsigned int data = VGA_PEL_D; | |
2533 | ||
2534 | /* address write mode register is not translated.. */ | |
8503df65 | 2535 | vga_w(cinfo->regbase, VGA_PEL_IW, regnum); |
1da177e4 LT |
2536 | |
2537 | if (cinfo->btype == BT_PICASSO || cinfo->btype == BT_PICASSO4 || | |
1b48cb56 | 2538 | cinfo->btype == BT_ALPINE || cinfo->btype == BT_GD5480 || |
df3aafd5 | 2539 | cinfo->btype == BT_SD64 || is_laguna(cinfo)) { |
1da177e4 LT |
2540 | /* but DAC data register IS, at least for Picasso II */ |
2541 | if (cinfo->btype == BT_PICASSO) | |
2542 | data += 0xfff; | |
8503df65 KH |
2543 | vga_w(cinfo->regbase, data, red); |
2544 | vga_w(cinfo->regbase, data, green); | |
2545 | vga_w(cinfo->regbase, data, blue); | |
1da177e4 | 2546 | } else { |
8503df65 KH |
2547 | vga_w(cinfo->regbase, data, blue); |
2548 | vga_w(cinfo->regbase, data, green); | |
2549 | vga_w(cinfo->regbase, data, red); | |
1da177e4 LT |
2550 | } |
2551 | } | |
2552 | ||
1da177e4 LT |
2553 | #if 0 |
2554 | /*** RClut - read CLUT entry (range 0..63) ***/ | |
8503df65 | 2555 | static void RClut(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 | ||
8503df65 | 2560 | vga_w(cinfo->regbase, VGA_PEL_IR, regnum); |
1da177e4 LT |
2561 | |
2562 | if (cinfo->btype == BT_PICASSO || cinfo->btype == BT_PICASSO4 || | |
2563 | cinfo->btype == BT_ALPINE || cinfo->btype == BT_GD5480) { | |
2564 | if (cinfo->btype == BT_PICASSO) | |
2565 | data += 0xfff; | |
8503df65 KH |
2566 | *red = vga_r(cinfo->regbase, data); |
2567 | *green = vga_r(cinfo->regbase, data); | |
2568 | *blue = vga_r(cinfo->regbase, data); | |
1da177e4 | 2569 | } else { |
8503df65 KH |
2570 | *blue = vga_r(cinfo->regbase, data); |
2571 | *green = vga_r(cinfo->regbase, data); | |
2572 | *red = vga_r(cinfo->regbase, data); | |
1da177e4 LT |
2573 | } |
2574 | } | |
2575 | #endif | |
2576 | ||
1da177e4 LT |
2577 | /******************************************************************* |
2578 | cirrusfb_WaitBLT() | |
2579 | ||
2580 | Wait for the BitBLT engine to complete a possible earlier job | |
2581 | *********************************************************************/ | |
2582 | ||
2583 | /* FIXME: use interrupts instead */ | |
8503df65 | 2584 | static void cirrusfb_WaitBLT(u8 __iomem *regbase) |
1da177e4 | 2585 | { |
8503df65 | 2586 | while (vga_rgfx(regbase, CL_GR31) & 0x08) |
48c329e9 | 2587 | cpu_relax(); |
1da177e4 LT |
2588 | } |
2589 | ||
2590 | /******************************************************************* | |
2591 | cirrusfb_BitBLT() | |
2592 | ||
2593 | perform accelerated "scrolling" | |
2594 | ********************************************************************/ | |
2595 | ||
8343c89c KH |
2596 | static void cirrusfb_set_blitter(u8 __iomem *regbase, |
2597 | u_short nwidth, u_short nheight, | |
2598 | u_long nsrc, u_long ndest, | |
2599 | u_short bltmode, u_short line_length) | |
1da177e4 | 2600 | |
8343c89c | 2601 | { |
1da177e4 | 2602 | /* pitch: set to line_length */ |
8503df65 KH |
2603 | /* dest pitch low */ |
2604 | vga_wgfx(regbase, CL_GR24, line_length & 0xff); | |
2605 | /* dest pitch hi */ | |
2606 | vga_wgfx(regbase, CL_GR25, line_length >> 8); | |
2607 | /* source pitch low */ | |
2608 | vga_wgfx(regbase, CL_GR26, line_length & 0xff); | |
2609 | /* source pitch hi */ | |
2610 | vga_wgfx(regbase, CL_GR27, line_length >> 8); | |
1da177e4 LT |
2611 | |
2612 | /* BLT width: actual number of pixels - 1 */ | |
8503df65 KH |
2613 | /* BLT width low */ |
2614 | vga_wgfx(regbase, CL_GR20, nwidth & 0xff); | |
2615 | /* BLT width hi */ | |
2616 | vga_wgfx(regbase, CL_GR21, nwidth >> 8); | |
1da177e4 LT |
2617 | |
2618 | /* BLT height: actual number of lines -1 */ | |
8503df65 KH |
2619 | /* BLT height low */ |
2620 | vga_wgfx(regbase, CL_GR22, nheight & 0xff); | |
2621 | /* BLT width hi */ | |
2622 | vga_wgfx(regbase, CL_GR23, nheight >> 8); | |
1da177e4 LT |
2623 | |
2624 | /* BLT destination */ | |
8503df65 KH |
2625 | /* BLT dest low */ |
2626 | vga_wgfx(regbase, CL_GR28, (u_char) (ndest & 0xff)); | |
2627 | /* BLT dest mid */ | |
2628 | vga_wgfx(regbase, CL_GR29, (u_char) (ndest >> 8)); | |
2629 | /* BLT dest hi */ | |
2630 | vga_wgfx(regbase, CL_GR2A, (u_char) (ndest >> 16)); | |
1da177e4 LT |
2631 | |
2632 | /* BLT source */ | |
8503df65 KH |
2633 | /* BLT src low */ |
2634 | vga_wgfx(regbase, CL_GR2C, (u_char) (nsrc & 0xff)); | |
2635 | /* BLT src mid */ | |
2636 | vga_wgfx(regbase, CL_GR2D, (u_char) (nsrc >> 8)); | |
2637 | /* BLT src hi */ | |
2638 | vga_wgfx(regbase, CL_GR2E, (u_char) (nsrc >> 16)); | |
1da177e4 LT |
2639 | |
2640 | /* BLT mode */ | |
8503df65 | 2641 | vga_wgfx(regbase, CL_GR30, bltmode); /* BLT mode */ |
1da177e4 LT |
2642 | |
2643 | /* BLT ROP: SrcCopy */ | |
8503df65 | 2644 | vga_wgfx(regbase, CL_GR32, 0x0d); /* BLT ROP */ |
1da177e4 LT |
2645 | |
2646 | /* and finally: GO! */ | |
527410ff | 2647 | vga_wgfx(regbase, CL_GR31, 0x02); /* BLT Start/status */ |
1da177e4 LT |
2648 | } |
2649 | ||
1da177e4 | 2650 | /******************************************************************* |
8343c89c | 2651 | cirrusfb_BitBLT() |
1da177e4 | 2652 | |
8343c89c | 2653 | perform accelerated "scrolling" |
1da177e4 LT |
2654 | ********************************************************************/ |
2655 | ||
8343c89c KH |
2656 | static void cirrusfb_BitBLT(u8 __iomem *regbase, int bits_per_pixel, |
2657 | u_short curx, u_short cury, | |
2658 | u_short destx, u_short desty, | |
2659 | u_short width, u_short height, | |
2660 | u_short line_length) | |
1da177e4 | 2661 | { |
8343c89c KH |
2662 | u_short nwidth = width - 1; |
2663 | u_short nheight = height - 1; | |
2664 | u_long nsrc, ndest; | |
2665 | u_char bltmode; | |
1da177e4 | 2666 | |
8343c89c KH |
2667 | bltmode = 0x00; |
2668 | /* if source adr < dest addr, do the Blt backwards */ | |
2669 | if (cury <= desty) { | |
2670 | if (cury == desty) { | |
2671 | /* if src and dest are on the same line, check x */ | |
2672 | if (curx < destx) | |
2673 | bltmode |= 0x01; | |
2674 | } else | |
2675 | bltmode |= 0x01; | |
2676 | } | |
2677 | /* standard case: forward blitting */ | |
2678 | nsrc = (cury * line_length) + curx; | |
2679 | ndest = (desty * line_length) + destx; | |
2680 | if (bltmode) { | |
2681 | /* this means start addresses are at the end, | |
2682 | * counting backwards | |
2683 | */ | |
2684 | nsrc += nheight * line_length + nwidth; | |
2685 | ndest += nheight * line_length + nwidth; | |
2686 | } | |
1da177e4 | 2687 | |
8503df65 | 2688 | cirrusfb_WaitBLT(regbase); |
1da177e4 | 2689 | |
8343c89c KH |
2690 | cirrusfb_set_blitter(regbase, nwidth, nheight, |
2691 | nsrc, ndest, bltmode, line_length); | |
2692 | } | |
1da177e4 | 2693 | |
8343c89c KH |
2694 | /******************************************************************* |
2695 | cirrusfb_RectFill() | |
1da177e4 | 2696 | |
8343c89c KH |
2697 | perform accelerated rectangle fill |
2698 | ********************************************************************/ | |
1da177e4 | 2699 | |
8343c89c KH |
2700 | static void cirrusfb_RectFill(u8 __iomem *regbase, int bits_per_pixel, |
2701 | u_short x, u_short y, u_short width, u_short height, | |
9e848062 KH |
2702 | u32 fg_color, u32 bg_color, u_short line_length, |
2703 | u_char blitmode) | |
8343c89c KH |
2704 | { |
2705 | u_long ndest = (y * line_length) + x; | |
2706 | u_char op; | |
1da177e4 | 2707 | |
8343c89c | 2708 | cirrusfb_WaitBLT(regbase); |
1da177e4 LT |
2709 | |
2710 | /* This is a ColorExpand Blt, using the */ | |
2711 | /* same color for foreground and background */ | |
9e848062 KH |
2712 | vga_wgfx(regbase, VGA_GFX_SR_VALUE, bg_color); |
2713 | vga_wgfx(regbase, VGA_GFX_SR_ENABLE, fg_color); | |
1da177e4 | 2714 | |
9e848062 | 2715 | op = 0x80; |
8343c89c | 2716 | if (bits_per_pixel >= 16) { |
9e848062 KH |
2717 | vga_wgfx(regbase, CL_GR10, bg_color >> 8); |
2718 | vga_wgfx(regbase, CL_GR11, fg_color >> 8); | |
2719 | op = 0x90; | |
8343c89c | 2720 | } |
7cade31c | 2721 | if (bits_per_pixel >= 24) { |
9e848062 KH |
2722 | vga_wgfx(regbase, CL_GR12, bg_color >> 16); |
2723 | vga_wgfx(regbase, CL_GR13, fg_color >> 16); | |
7cade31c KH |
2724 | op = 0xa0; |
2725 | } | |
2726 | if (bits_per_pixel == 32) { | |
9e848062 KH |
2727 | vga_wgfx(regbase, CL_GR14, bg_color >> 24); |
2728 | vga_wgfx(regbase, CL_GR15, fg_color >> 24); | |
2729 | op = 0xb0; | |
1da177e4 | 2730 | } |
8343c89c | 2731 | cirrusfb_set_blitter(regbase, width - 1, height - 1, |
9e848062 | 2732 | 0, ndest, op | blitmode, line_length); |
1da177e4 LT |
2733 | } |
2734 | ||
1da177e4 LT |
2735 | /************************************************************************** |
2736 | * bestclock() - determine closest possible clock lower(?) than the | |
2737 | * desired pixel clock | |
2738 | **************************************************************************/ | |
dafa32c5 | 2739 | static void bestclock(long freq, int *nom, int *den, int *div) |
1da177e4 | 2740 | { |
dafa32c5 KH |
2741 | int n, d; |
2742 | long h, diff; | |
1da177e4 | 2743 | |
8503df65 KH |
2744 | assert(nom != NULL); |
2745 | assert(den != NULL); | |
2746 | assert(div != NULL); | |
1da177e4 LT |
2747 | |
2748 | *nom = 0; | |
2749 | *den = 0; | |
2750 | *div = 0; | |
2751 | ||
1da177e4 LT |
2752 | if (freq < 8000) |
2753 | freq = 8000; | |
2754 | ||
dafa32c5 | 2755 | diff = freq; |
1da177e4 LT |
2756 | |
2757 | for (n = 32; n < 128; n++) { | |
7528f543 KH |
2758 | int s = 0; |
2759 | ||
dafa32c5 | 2760 | d = (14318 * n) / freq; |
1da177e4 | 2761 | if ((d >= 7) && (d <= 63)) { |
7528f543 KH |
2762 | int temp = d; |
2763 | ||
2764 | if (temp > 31) { | |
2765 | s = 1; | |
2766 | temp >>= 1; | |
2767 | } | |
2768 | h = ((14318 * n) / temp) >> s; | |
dafa32c5 KH |
2769 | h = h > freq ? h - freq : freq - h; |
2770 | if (h < diff) { | |
2771 | diff = h; | |
1da177e4 | 2772 | *nom = n; |
7528f543 KH |
2773 | *den = temp; |
2774 | *div = s; | |
1da177e4 LT |
2775 | } |
2776 | } | |
7528f543 | 2777 | d++; |
1da177e4 | 2778 | if ((d >= 7) && (d <= 63)) { |
7528f543 KH |
2779 | if (d > 31) { |
2780 | s = 1; | |
2781 | d >>= 1; | |
2782 | } | |
2783 | h = ((14318 * n) / d) >> s; | |
dafa32c5 KH |
2784 | h = h > freq ? h - freq : freq - h; |
2785 | if (h < diff) { | |
2786 | diff = h; | |
1da177e4 | 2787 | *nom = n; |
7528f543 KH |
2788 | *den = d; |
2789 | *div = s; | |
1da177e4 LT |
2790 | } |
2791 | } | |
2792 | } | |
1da177e4 LT |
2793 | } |
2794 | ||
1da177e4 LT |
2795 | /* ------------------------------------------------------------------------- |
2796 | * | |
2797 | * debugging functions | |
2798 | * | |
2799 | * ------------------------------------------------------------------------- | |
2800 | */ | |
2801 | ||
2802 | #ifdef CIRRUSFB_DEBUG | |
2803 | ||
1da177e4 LT |
2804 | /** |
2805 | * cirrusfb_dbg_print_regs | |
2806 | * @base: If using newmmio, the newmmio base address, otherwise %NULL | |
2807 | * @reg_class: type of registers to read: %CRT, or %SEQ | |
2808 | * | |
2809 | * DESCRIPTION: | |
2810 | * Dumps the given list of VGA CRTC registers. If @base is %NULL, | |
2811 | * old-style I/O ports are queried for information, otherwise MMIO is | |
2812 | * used at the given @base address to query the information. | |
2813 | */ | |
2814 | ||
75ed3a17 KH |
2815 | static void cirrusfb_dbg_print_regs(struct fb_info *info, |
2816 | caddr_t regbase, | |
2817 | enum cirrusfb_dbg_reg_class reg_class, ...) | |
1da177e4 LT |
2818 | { |
2819 | va_list list; | |
2820 | unsigned char val = 0; | |
2821 | unsigned reg; | |
2822 | char *name; | |
2823 | ||
8503df65 | 2824 | va_start(list, reg_class); |
1da177e4 | 2825 | |
8503df65 | 2826 | name = va_arg(list, char *); |
1da177e4 | 2827 | while (name != NULL) { |
8503df65 | 2828 | reg = va_arg(list, int); |
1da177e4 LT |
2829 | |
2830 | switch (reg_class) { | |
2831 | case CRT: | |
8503df65 | 2832 | val = vga_rcrt(regbase, (unsigned char) reg); |
1da177e4 LT |
2833 | break; |
2834 | case SEQ: | |
8503df65 | 2835 | val = vga_rseq(regbase, (unsigned char) reg); |
1da177e4 LT |
2836 | break; |
2837 | default: | |
2838 | /* should never occur */ | |
c930faae | 2839 | assert(false); |
1da177e4 LT |
2840 | break; |
2841 | } | |
2842 | ||
75ed3a17 | 2843 | dev_dbg(info->device, "%8s = 0x%02X\n", name, val); |
1da177e4 | 2844 | |
8503df65 | 2845 | name = va_arg(list, char *); |
1da177e4 LT |
2846 | } |
2847 | ||
8503df65 | 2848 | va_end(list); |
1da177e4 LT |
2849 | } |
2850 | ||
1da177e4 LT |
2851 | /** |
2852 | * cirrusfb_dbg_reg_dump | |
2853 | * @base: If using newmmio, the newmmio base address, otherwise %NULL | |
2854 | * | |
2855 | * DESCRIPTION: | |
2856 | * Dumps a list of interesting VGA and CIRRUSFB registers. If @base is %NULL, | |
2857 | * old-style I/O ports are queried for information, otherwise MMIO is | |
2858 | * used at the given @base address to query the information. | |
2859 | */ | |
2860 | ||
75ed3a17 | 2861 | static void cirrusfb_dbg_reg_dump(struct fb_info *info, caddr_t regbase) |
1da177e4 | 2862 | { |
75ed3a17 | 2863 | dev_dbg(info->device, "VGA CRTC register dump:\n"); |
1da177e4 | 2864 | |
75ed3a17 | 2865 | cirrusfb_dbg_print_regs(info, regbase, CRT, |
1da177e4 LT |
2866 | "CR00", 0x00, |
2867 | "CR01", 0x01, | |
2868 | "CR02", 0x02, | |
2869 | "CR03", 0x03, | |
2870 | "CR04", 0x04, | |
2871 | "CR05", 0x05, | |
2872 | "CR06", 0x06, | |
2873 | "CR07", 0x07, | |
2874 | "CR08", 0x08, | |
2875 | "CR09", 0x09, | |
2876 | "CR0A", 0x0A, | |
2877 | "CR0B", 0x0B, | |
2878 | "CR0C", 0x0C, | |
2879 | "CR0D", 0x0D, | |
2880 | "CR0E", 0x0E, | |
2881 | "CR0F", 0x0F, | |
2882 | "CR10", 0x10, | |
2883 | "CR11", 0x11, | |
2884 | "CR12", 0x12, | |
2885 | "CR13", 0x13, | |
2886 | "CR14", 0x14, | |
2887 | "CR15", 0x15, | |
2888 | "CR16", 0x16, | |
2889 | "CR17", 0x17, | |
2890 | "CR18", 0x18, | |
2891 | "CR22", 0x22, | |
2892 | "CR24", 0x24, | |
2893 | "CR26", 0x26, | |
2894 | "CR2D", 0x2D, | |
2895 | "CR2E", 0x2E, | |
2896 | "CR2F", 0x2F, | |
2897 | "CR30", 0x30, | |
2898 | "CR31", 0x31, | |
2899 | "CR32", 0x32, | |
2900 | "CR33", 0x33, | |
2901 | "CR34", 0x34, | |
2902 | "CR35", 0x35, | |
2903 | "CR36", 0x36, | |
2904 | "CR37", 0x37, | |
2905 | "CR38", 0x38, | |
2906 | "CR39", 0x39, | |
2907 | "CR3A", 0x3A, | |
2908 | "CR3B", 0x3B, | |
2909 | "CR3C", 0x3C, | |
2910 | "CR3D", 0x3D, | |
2911 | "CR3E", 0x3E, | |
2912 | "CR3F", 0x3F, | |
2913 | NULL); | |
2914 | ||
75ed3a17 | 2915 | dev_dbg(info->device, "\n"); |
1da177e4 | 2916 | |
75ed3a17 | 2917 | dev_dbg(info->device, "VGA SEQ register dump:\n"); |
1da177e4 | 2918 | |
75ed3a17 | 2919 | cirrusfb_dbg_print_regs(info, regbase, SEQ, |
1da177e4 LT |
2920 | "SR00", 0x00, |
2921 | "SR01", 0x01, | |
2922 | "SR02", 0x02, | |
2923 | "SR03", 0x03, | |
2924 | "SR04", 0x04, | |
2925 | "SR08", 0x08, | |
2926 | "SR09", 0x09, | |
2927 | "SR0A", 0x0A, | |
2928 | "SR0B", 0x0B, | |
2929 | "SR0D", 0x0D, | |
2930 | "SR10", 0x10, | |
2931 | "SR11", 0x11, | |
2932 | "SR12", 0x12, | |
2933 | "SR13", 0x13, | |
2934 | "SR14", 0x14, | |
2935 | "SR15", 0x15, | |
2936 | "SR16", 0x16, | |
2937 | "SR17", 0x17, | |
2938 | "SR18", 0x18, | |
2939 | "SR19", 0x19, | |
2940 | "SR1A", 0x1A, | |
2941 | "SR1B", 0x1B, | |
2942 | "SR1C", 0x1C, | |
2943 | "SR1D", 0x1D, | |
2944 | "SR1E", 0x1E, | |
2945 | "SR1F", 0x1F, | |
2946 | NULL); | |
2947 | ||
75ed3a17 | 2948 | dev_dbg(info->device, "\n"); |
1da177e4 LT |
2949 | } |
2950 | ||
2951 | #endif /* CIRRUSFB_DEBUG */ | |
2952 |