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[PATCH] radix-tree documentation cleanups
[linux-2.6/mini2440.git] / drivers / video / imsttfb.c
blob7db42542eb19894be08530edb36940647ac62e6d
1 /*
2 * drivers/video/imsttfb.c -- frame buffer device for IMS TwinTurbo
3 *
4 * This file is derived from the powermac console "imstt" driver:
5 * Copyright (C) 1997 Sigurdur Asgeirsson
6 * With additional hacking by Jeffrey Kuskin (jsk@mojave.stanford.edu)
7 * Modified by Danilo Beuche 1998
8 * Some register values added by Damien Doligez, INRIA Rocquencourt
9 * Various cleanups by Paul Mundt (lethal@chaoticdreams.org)
10 *
11 * This file was written by Ryan Nielsen (ran@krazynet.com)
12 * Most of the frame buffer device stuff was copied from atyfb.c
13 *
14 * This file is subject to the terms and conditions of the GNU General Public
15 * License. See the file COPYING in the main directory of this archive for
16 * more details.
17 */
18
19 #include <linux/config.h>
20 #include <linux/module.h>
21 #include <linux/kernel.h>
22 #include <linux/errno.h>
23 #include <linux/string.h>
24 #include <linux/mm.h>
25 #include <linux/tty.h>
26 #include <linux/slab.h>
27 #include <linux/vmalloc.h>
28 #include <linux/delay.h>
29 #include <linux/interrupt.h>
30 #include <linux/fb.h>
31 #include <linux/init.h>
32 #include <linux/pci.h>
33 #include <asm/io.h>
34 #include <asm/uaccess.h>
35
36 #if defined(CONFIG_PPC)
37 #include <linux/nvram.h>
38 #include <asm/prom.h>
39 #include <asm/pci-bridge.h>
40 #include "macmodes.h"
41 #endif
42
43 #ifndef __powerpc__
44 #define eieio() /* Enforce In-order Execution of I/O */
45 #endif
46
47 /* TwinTurbo (Cosmo) registers */
48 enum {
49 S1SA = 0, /* 0x00 */
50 S2SA = 1, /* 0x04 */
51 SP = 2, /* 0x08 */
52 DSA = 3, /* 0x0C */
53 CNT = 4, /* 0x10 */
54 DP_OCTL = 5, /* 0x14 */
55 CLR = 6, /* 0x18 */
56 BI = 8, /* 0x20 */
57 MBC = 9, /* 0x24 */
58 BLTCTL = 10, /* 0x28 */
59
60 /* Scan Timing Generator Registers */
61 HES = 12, /* 0x30 */
62 HEB = 13, /* 0x34 */
63 HSB = 14, /* 0x38 */
64 HT = 15, /* 0x3C */
65 VES = 16, /* 0x40 */
66 VEB = 17, /* 0x44 */
67 VSB = 18, /* 0x48 */
68 VT = 19, /* 0x4C */
69 HCIV = 20, /* 0x50 */
70 VCIV = 21, /* 0x54 */
71 TCDR = 22, /* 0x58 */
72 VIL = 23, /* 0x5C */
73 STGCTL = 24, /* 0x60 */
74
75 /* Screen Refresh Generator Registers */
76 SSR = 25, /* 0x64 */
77 HRIR = 26, /* 0x68 */
78 SPR = 27, /* 0x6C */
79 CMR = 28, /* 0x70 */
80 SRGCTL = 29, /* 0x74 */
81
82 /* RAM Refresh Generator Registers */
83 RRCIV = 30, /* 0x78 */
84 RRSC = 31, /* 0x7C */
85 RRCR = 34, /* 0x88 */
86
87 /* System Registers */
88 GIOE = 32, /* 0x80 */
89 GIO = 33, /* 0x84 */
90 SCR = 35, /* 0x8C */
91 SSTATUS = 36, /* 0x90 */
92 PRC = 37, /* 0x94 */
93
94 #if 0
95 /* PCI Registers */
96 DVID = 0x00000000L,
97 SC = 0x00000004L,
98 CCR = 0x00000008L,
99 OG = 0x0000000CL,
100 BARM = 0x00000010L,
101 BARER = 0x00000030L,
102 #endif
103 };
104
105 /* IBM 624 RAMDAC Direct Registers */
106 enum {
107 PADDRW = 0x00,
108 PDATA = 0x04,
109 PPMASK = 0x08,
110 PADDRR = 0x0c,
111 PIDXLO = 0x10,
112 PIDXHI = 0x14,
113 PIDXDATA= 0x18,
114 PIDXCTL = 0x1c
115 };
116
117 /* IBM 624 RAMDAC Indirect Registers */
118 enum {
119 CLKCTL = 0x02, /* (0x01) Miscellaneous Clock Control */
120 SYNCCTL = 0x03, /* (0x00) Sync Control */
121 HSYNCPOS = 0x04, /* (0x00) Horizontal Sync Position */
122 PWRMNGMT = 0x05, /* (0x00) Power Management */
123 DACOP = 0x06, /* (0x02) DAC Operation */
124 PALETCTL = 0x07, /* (0x00) Palette Control */
125 SYSCLKCTL = 0x08, /* (0x01) System Clock Control */
126 PIXFMT = 0x0a, /* () Pixel Format [bpp >> 3 + 2] */
127 BPP8 = 0x0b, /* () 8 Bits/Pixel Control */
128 BPP16 = 0x0c, /* () 16 Bits/Pixel Control [bit 1=1 for 565] */
129 BPP24 = 0x0d, /* () 24 Bits/Pixel Control */
130 BPP32 = 0x0e, /* () 32 Bits/Pixel Control */
131 PIXCTL1 = 0x10, /* (0x05) Pixel PLL Control 1 */
132 PIXCTL2 = 0x11, /* (0x00) Pixel PLL Control 2 */
133 SYSCLKN = 0x15, /* () System Clock N (System PLL Reference Divider) */
134 SYSCLKM = 0x16, /* () System Clock M (System PLL VCO Divider) */
135 SYSCLKP = 0x17, /* () System Clock P */
136 SYSCLKC = 0x18, /* () System Clock C */
137 /*
138 * Dot clock rate is 20MHz * (m + 1) / ((n + 1) * (p ? 2 * p : 1)
139 * c is charge pump bias which depends on the VCO frequency
140 */
141 PIXM0 = 0x20, /* () Pixel M 0 */
142 PIXN0 = 0x21, /* () Pixel N 0 */
143 PIXP0 = 0x22, /* () Pixel P 0 */
144 PIXC0 = 0x23, /* () Pixel C 0 */
145 CURSCTL = 0x30, /* (0x00) Cursor Control */
146 CURSXLO = 0x31, /* () Cursor X position, low 8 bits */
147 CURSXHI = 0x32, /* () Cursor X position, high 8 bits */
148 CURSYLO = 0x33, /* () Cursor Y position, low 8 bits */
149 CURSYHI = 0x34, /* () Cursor Y position, high 8 bits */
150 CURSHOTX = 0x35, /* () Cursor Hot Spot X */
151 CURSHOTY = 0x36, /* () Cursor Hot Spot Y */
152 CURSACCTL = 0x37, /* () Advanced Cursor Control Enable */
153 CURSACATTR = 0x38, /* () Advanced Cursor Attribute */
154 CURS1R = 0x40, /* () Cursor 1 Red */
155 CURS1G = 0x41, /* () Cursor 1 Green */
156 CURS1B = 0x42, /* () Cursor 1 Blue */
157 CURS2R = 0x43, /* () Cursor 2 Red */
158 CURS2G = 0x44, /* () Cursor 2 Green */
159 CURS2B = 0x45, /* () Cursor 2 Blue */
160 CURS3R = 0x46, /* () Cursor 3 Red */
161 CURS3G = 0x47, /* () Cursor 3 Green */
162 CURS3B = 0x48, /* () Cursor 3 Blue */
163 BORDR = 0x60, /* () Border Color Red */
164 BORDG = 0x61, /* () Border Color Green */
165 BORDB = 0x62, /* () Border Color Blue */
166 MISCTL1 = 0x70, /* (0x00) Miscellaneous Control 1 */
167 MISCTL2 = 0x71, /* (0x00) Miscellaneous Control 2 */
168 MISCTL3 = 0x72, /* (0x00) Miscellaneous Control 3 */
169 KEYCTL = 0x78 /* (0x00) Key Control/DB Operation */
170 };
171
172 /* TI TVP 3030 RAMDAC Direct Registers */
173 enum {
174 TVPADDRW = 0x00, /* 0 Palette/Cursor RAM Write Address/Index */
175 TVPPDATA = 0x04, /* 1 Palette Data RAM Data */
176 TVPPMASK = 0x08, /* 2 Pixel Read-Mask */
177 TVPPADRR = 0x0c, /* 3 Palette/Cursor RAM Read Address */
178 TVPCADRW = 0x10, /* 4 Cursor/Overscan Color Write Address */
179 TVPCDATA = 0x14, /* 5 Cursor/Overscan Color Data */
180 /* 6 reserved */
181 TVPCADRR = 0x1c, /* 7 Cursor/Overscan Color Read Address */
182 /* 8 reserved */
183 TVPDCCTL = 0x24, /* 9 Direct Cursor Control */
184 TVPIDATA = 0x28, /* 10 Index Data */
185 TVPCRDAT = 0x2c, /* 11 Cursor RAM Data */
186 TVPCXPOL = 0x30, /* 12 Cursor-Position X LSB */
187 TVPCXPOH = 0x34, /* 13 Cursor-Position X MSB */
188 TVPCYPOL = 0x38, /* 14 Cursor-Position Y LSB */
189 TVPCYPOH = 0x3c, /* 15 Cursor-Position Y MSB */
190 };
191
192 /* TI TVP 3030 RAMDAC Indirect Registers */
193 enum {
194 TVPIRREV = 0x01, /* Silicon Revision [RO] */
195 TVPIRICC = 0x06, /* Indirect Cursor Control (0x00) */
196 TVPIRBRC = 0x07, /* Byte Router Control (0xe4) */
197 TVPIRLAC = 0x0f, /* Latch Control (0x06) */
198 TVPIRTCC = 0x18, /* True Color Control (0x80) */
199 TVPIRMXC = 0x19, /* Multiplex Control (0x98) */
200 TVPIRCLS = 0x1a, /* Clock Selection (0x07) */
201 TVPIRPPG = 0x1c, /* Palette Page (0x00) */
202 TVPIRGEC = 0x1d, /* General Control (0x00) */
203 TVPIRMIC = 0x1e, /* Miscellaneous Control (0x00) */
204 TVPIRPLA = 0x2c, /* PLL Address */
205 TVPIRPPD = 0x2d, /* Pixel Clock PLL Data */
206 TVPIRMPD = 0x2e, /* Memory Clock PLL Data */
207 TVPIRLPD = 0x2f, /* Loop Clock PLL Data */
208 TVPIRCKL = 0x30, /* Color-Key Overlay Low */
209 TVPIRCKH = 0x31, /* Color-Key Overlay High */
210 TVPIRCRL = 0x32, /* Color-Key Red Low */
211 TVPIRCRH = 0x33, /* Color-Key Red High */
212 TVPIRCGL = 0x34, /* Color-Key Green Low */
213 TVPIRCGH = 0x35, /* Color-Key Green High */
214 TVPIRCBL = 0x36, /* Color-Key Blue Low */
215 TVPIRCBH = 0x37, /* Color-Key Blue High */
216 TVPIRCKC = 0x38, /* Color-Key Control (0x00) */
217 TVPIRMLC = 0x39, /* MCLK/Loop Clock Control (0x18) */
218 TVPIRSEN = 0x3a, /* Sense Test (0x00) */
219 TVPIRTMD = 0x3b, /* Test Mode Data */
220 TVPIRRML = 0x3c, /* CRC Remainder LSB [RO] */
221 TVPIRRMM = 0x3d, /* CRC Remainder MSB [RO] */
222 TVPIRRMS = 0x3e, /* CRC Bit Select [WO] */
223 TVPIRDID = 0x3f, /* Device ID [RO] (0x30) */
224 TVPIRRES = 0xff /* Software Reset [WO] */
225 };
226
227 struct initvalues {
228 __u8 addr, value;
229 };
230
231 static struct initvalues ibm_initregs[] __devinitdata = {
232 { CLKCTL, 0x21 },
233 { SYNCCTL, 0x00 },
234 { HSYNCPOS, 0x00 },
235 { PWRMNGMT, 0x00 },
236 { DACOP, 0x02 },
237 { PALETCTL, 0x00 },
238 { SYSCLKCTL, 0x01 },
239
240 /*
241 * Note that colors in X are correct only if all video data is
242 * passed through the palette in the DAC. That is, "indirect
243 * color" must be configured. This is the case for the IBM DAC
244 * used in the 2MB and 4MB cards, at least.
245 */
246 { BPP8, 0x00 },
247 { BPP16, 0x01 },
248 { BPP24, 0x00 },
249 { BPP32, 0x00 },
250
251 { PIXCTL1, 0x05 },
252 { PIXCTL2, 0x00 },
253 { SYSCLKN, 0x08 },
254 { SYSCLKM, 0x4f },
255 { SYSCLKP, 0x00 },
256 { SYSCLKC, 0x00 },
257 { CURSCTL, 0x00 },
258 { CURSACCTL, 0x01 },
259 { CURSACATTR, 0xa8 },
260 { CURS1R, 0xff },
261 { CURS1G, 0xff },
262 { CURS1B, 0xff },
263 { CURS2R, 0xff },
264 { CURS2G, 0xff },
265 { CURS2B, 0xff },
266 { CURS3R, 0xff },
267 { CURS3G, 0xff },
268 { CURS3B, 0xff },
269 { BORDR, 0xff },
270 { BORDG, 0xff },
271 { BORDB, 0xff },
272 { MISCTL1, 0x01 },
273 { MISCTL2, 0x45 },
274 { MISCTL3, 0x00 },
275 { KEYCTL, 0x00 }
276 };
277
278 static struct initvalues tvp_initregs[] __devinitdata = {
279 { TVPIRICC, 0x00 },
280 { TVPIRBRC, 0xe4 },
281 { TVPIRLAC, 0x06 },
282 { TVPIRTCC, 0x80 },
283 { TVPIRMXC, 0x4d },
284 { TVPIRCLS, 0x05 },
285 { TVPIRPPG, 0x00 },
286 { TVPIRGEC, 0x00 },
287 { TVPIRMIC, 0x08 },
288 { TVPIRCKL, 0xff },
289 { TVPIRCKH, 0xff },
290 { TVPIRCRL, 0xff },
291 { TVPIRCRH, 0xff },
292 { TVPIRCGL, 0xff },
293 { TVPIRCGH, 0xff },
294 { TVPIRCBL, 0xff },
295 { TVPIRCBH, 0xff },
296 { TVPIRCKC, 0x00 },
297 { TVPIRPLA, 0x00 },
298 { TVPIRPPD, 0xc0 },
299 { TVPIRPPD, 0xd5 },
300 { TVPIRPPD, 0xea },
301 { TVPIRPLA, 0x00 },
302 { TVPIRMPD, 0xb9 },
303 { TVPIRMPD, 0x3a },
304 { TVPIRMPD, 0xb1 },
305 { TVPIRPLA, 0x00 },
306 { TVPIRLPD, 0xc1 },
307 { TVPIRLPD, 0x3d },
308 { TVPIRLPD, 0xf3 },
309 };
310
311 struct imstt_regvals {
312 __u32 pitch;
313 __u16 hes, heb, hsb, ht, ves, veb, vsb, vt, vil;
314 __u8 pclk_m, pclk_n, pclk_p;
315 /* Values of the tvp which change depending on colormode x resolution */
316 __u8 mlc[3]; /* Memory Loop Config 0x39 */
317 __u8 lckl_p[3]; /* P value of LCKL PLL */
318 };
319
320 struct imstt_par {
321 struct imstt_regvals init;
322 __u32 __iomem *dc_regs;
323 unsigned long cmap_regs_phys;
324 __u8 *cmap_regs;
325 __u32 ramdac;
326 __u32 palette[16];
327 };
328
329 enum {
330 IBM = 0,
331 TVP = 1
332 };
333
334 #define USE_NV_MODES 1
335 #define INIT_BPP 8
336 #define INIT_XRES 640
337 #define INIT_YRES 480
338
339 static int inverse = 0;
340 static char fontname[40] __initdata = { 0 };
341 #if defined(CONFIG_PPC)
342 static signed char init_vmode __devinitdata = -1, init_cmode __devinitdata = -1;
343 #endif
344
345 static struct imstt_regvals tvp_reg_init_2 = {
346 512,
347 0x0002, 0x0006, 0x0026, 0x0028, 0x0003, 0x0016, 0x0196, 0x0197, 0x0196,
348 0xec, 0x2a, 0xf3,
349 { 0x3c, 0x3b, 0x39 }, { 0xf3, 0xf3, 0xf3 }
350 };
351
352 static struct imstt_regvals tvp_reg_init_6 = {
353 640,
354 0x0004, 0x0009, 0x0031, 0x0036, 0x0003, 0x002a, 0x020a, 0x020d, 0x020a,
355 0xef, 0x2e, 0xb2,
356 { 0x39, 0x39, 0x38 }, { 0xf3, 0xf3, 0xf3 }
357 };
358
359 static struct imstt_regvals tvp_reg_init_12 = {
360 800,
361 0x0005, 0x000e, 0x0040, 0x0042, 0x0003, 0x018, 0x270, 0x271, 0x270,
362 0xf6, 0x2e, 0xf2,
363 { 0x3a, 0x39, 0x38 }, { 0xf3, 0xf3, 0xf3 }
364 };
365
366 static struct imstt_regvals tvp_reg_init_13 = {
367 832,
368 0x0004, 0x0011, 0x0045, 0x0048, 0x0003, 0x002a, 0x029a, 0x029b, 0x0000,
369 0xfe, 0x3e, 0xf1,
370 { 0x39, 0x38, 0x38 }, { 0xf3, 0xf3, 0xf2 }
371 };
372
373 static struct imstt_regvals tvp_reg_init_17 = {
374 1024,
375 0x0006, 0x0210, 0x0250, 0x0053, 0x1003, 0x0021, 0x0321, 0x0324, 0x0000,
376 0xfc, 0x3a, 0xf1,
377 { 0x39, 0x38, 0x38 }, { 0xf3, 0xf3, 0xf2 }
378 };
379
380 static struct imstt_regvals tvp_reg_init_18 = {
381 1152,
382 0x0009, 0x0011, 0x059, 0x5b, 0x0003, 0x0031, 0x0397, 0x039a, 0x0000,
383 0xfd, 0x3a, 0xf1,
384 { 0x39, 0x38, 0x38 }, { 0xf3, 0xf3, 0xf2 }
385 };
386
387 static struct imstt_regvals tvp_reg_init_19 = {
388 1280,
389 0x0009, 0x0016, 0x0066, 0x0069, 0x0003, 0x0027, 0x03e7, 0x03e8, 0x03e7,
390 0xf7, 0x36, 0xf0,
391 { 0x38, 0x38, 0x38 }, { 0xf3, 0xf2, 0xf1 }
392 };
393
394 static struct imstt_regvals tvp_reg_init_20 = {
395 1280,
396 0x0009, 0x0018, 0x0068, 0x006a, 0x0003, 0x0029, 0x0429, 0x042a, 0x0000,
397 0xf0, 0x2d, 0xf0,
398 { 0x38, 0x38, 0x38 }, { 0xf3, 0xf2, 0xf1 }
399 };
400
401 /*
402 * PCI driver prototypes
403 */
404 static int imsttfb_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
405 static void imsttfb_remove(struct pci_dev *pdev);
406
407 /*
408 * Register access
409 */
410 static inline u32 read_reg_le32(volatile u32 __iomem *base, int regindex)
411 {
412 #ifdef __powerpc__
413 return in_le32(base + regindex);
414 #else
415 return readl(base + regindex);
416 #endif
417 }
418
419 static inline void write_reg_le32(volatile u32 __iomem *base, int regindex, u32 val)
420 {
421 #ifdef __powerpc__
422 out_le32(base + regindex, val);
423 #else
424 writel(val, base + regindex);
425 #endif
426 }
427
428 static __u32
429 getclkMHz(struct imstt_par *par)
430 {
431 __u32 clk_m, clk_n, clk_p;
432
433 clk_m = par->init.pclk_m;
434 clk_n = par->init.pclk_n;
435 clk_p = par->init.pclk_p;
436
437 return 20 * (clk_m + 1) / ((clk_n + 1) * (clk_p ? 2 * clk_p : 1));
438 }
439
440 static void
441 setclkMHz(struct imstt_par *par, __u32 MHz)
442 {
443 __u32 clk_m, clk_n, clk_p, x, stage, spilled;
444
445 clk_m = clk_n = clk_p = 0;
446 stage = spilled = 0;
447 for (;;) {
448 switch (stage) {
449 case 0:
450 clk_m++;
451 break;
452 case 1:
453 clk_n++;
454 break;
455 }
456 x = 20 * (clk_m + 1) / ((clk_n + 1) * (clk_p ? 2 * clk_p : 1));
457 if (x == MHz)
458 break;
459 if (x > MHz) {
460 spilled = 1;
461 stage = 1;
462 } else if (spilled && x < MHz) {
463 stage = 0;
464 }
465 }
466
467 par->init.pclk_m = clk_m;
468 par->init.pclk_n = clk_n;
469 par->init.pclk_p = clk_p;
470 }
471
472 static struct imstt_regvals *
473 compute_imstt_regvals_ibm(struct imstt_par *par, int xres, int yres)
474 {
475 struct imstt_regvals *init = &par->init;
476 __u32 MHz, hes, heb, veb, htp, vtp;
477
478 switch (xres) {
479 case 640:
480 hes = 0x0008; heb = 0x0012; veb = 0x002a; htp = 10; vtp = 2;
481 MHz = 30 /* .25 */ ;
482 break;
483 case 832:
484 hes = 0x0005; heb = 0x0020; veb = 0x0028; htp = 8; vtp = 3;
485 MHz = 57 /* .27_ */ ;
486 break;
487 case 1024:
488 hes = 0x000a; heb = 0x001c; veb = 0x0020; htp = 8; vtp = 3;
489 MHz = 80;
490 break;
491 case 1152:
492 hes = 0x0012; heb = 0x0022; veb = 0x0031; htp = 4; vtp = 3;
493 MHz = 101 /* .6_ */ ;
494 break;
495 case 1280:
496 hes = 0x0012; heb = 0x002f; veb = 0x0029; htp = 4; vtp = 1;
497 MHz = yres == 960 ? 126 : 135;
498 break;
499 case 1600:
500 hes = 0x0018; heb = 0x0040; veb = 0x002a; htp = 4; vtp = 3;
501 MHz = 200;
502 break;
503 default:
504 return NULL;
505 }
506
507 setclkMHz(par, MHz);
508
509 init->hes = hes;
510 init->heb = heb;
511 init->hsb = init->heb + (xres >> 3);
512 init->ht = init->hsb + htp;
513 init->ves = 0x0003;
514 init->veb = veb;
515 init->vsb = init->veb + yres;
516 init->vt = init->vsb + vtp;
517 init->vil = init->vsb;
518
519 init->pitch = xres;
520 return init;
521 }
522
523 static struct imstt_regvals *
524 compute_imstt_regvals_tvp(struct imstt_par *par, int xres, int yres)
525 {
526 struct imstt_regvals *init;
527
528 switch (xres) {
529 case 512:
530 init = &tvp_reg_init_2;
531 break;
532 case 640:
533 init = &tvp_reg_init_6;
534 break;
535 case 800:
536 init = &tvp_reg_init_12;
537 break;
538 case 832:
539 init = &tvp_reg_init_13;
540 break;
541 case 1024:
542 init = &tvp_reg_init_17;
543 break;
544 case 1152:
545 init = &tvp_reg_init_18;
546 break;
547 case 1280:
548 init = yres == 960 ? &tvp_reg_init_19 : &tvp_reg_init_20;
549 break;
550 default:
551 return NULL;
552 }
553 par->init = *init;
554 return init;
555 }
556
557 static struct imstt_regvals *
558 compute_imstt_regvals (struct imstt_par *par, u_int xres, u_int yres)
559 {
560 if (par->ramdac == IBM)
561 return compute_imstt_regvals_ibm(par, xres, yres);
562 else
563 return compute_imstt_regvals_tvp(par, xres, yres);
564 }
565
566 static void
567 set_imstt_regvals_ibm (struct imstt_par *par, u_int bpp)
568 {
569 struct imstt_regvals *init = &par->init;
570 __u8 pformat = (bpp >> 3) + 2;
571
572 par->cmap_regs[PIDXHI] = 0; eieio();
573 par->cmap_regs[PIDXLO] = PIXM0; eieio();
574 par->cmap_regs[PIDXDATA] = init->pclk_m;eieio();
575 par->cmap_regs[PIDXLO] = PIXN0; eieio();
576 par->cmap_regs[PIDXDATA] = init->pclk_n;eieio();
577 par->cmap_regs[PIDXLO] = PIXP0; eieio();
578 par->cmap_regs[PIDXDATA] = init->pclk_p;eieio();
579 par->cmap_regs[PIDXLO] = PIXC0; eieio();
580 par->cmap_regs[PIDXDATA] = 0x02; eieio();
581
582 par->cmap_regs[PIDXLO] = PIXFMT; eieio();
583 par->cmap_regs[PIDXDATA] = pformat; eieio();
584 }
585
586 static void
587 set_imstt_regvals_tvp (struct imstt_par *par, u_int bpp)
588 {
589 struct imstt_regvals *init = &par->init;
590 __u8 tcc, mxc, lckl_n, mic;
591 __u8 mlc, lckl_p;
592
593 switch (bpp) {
594 default:
595 case 8:
596 tcc = 0x80;
597 mxc = 0x4d;
598 lckl_n = 0xc1;
599 mlc = init->mlc[0];
600 lckl_p = init->lckl_p[0];
601 break;
602 case 16:
603 tcc = 0x44;
604 mxc = 0x55;
605 lckl_n = 0xe1;
606 mlc = init->mlc[1];
607 lckl_p = init->lckl_p[1];
608 break;
609 case 24:
610 tcc = 0x5e;
611 mxc = 0x5d;
612 lckl_n = 0xf1;
613 mlc = init->mlc[2];
614 lckl_p = init->lckl_p[2];
615 break;
616 case 32:
617 tcc = 0x46;
618 mxc = 0x5d;
619 lckl_n = 0xf1;
620 mlc = init->mlc[2];
621 lckl_p = init->lckl_p[2];
622 break;
623 }
624 mic = 0x08;
625
626 par->cmap_regs[TVPADDRW] = TVPIRPLA; eieio();
627 par->cmap_regs[TVPIDATA] = 0x00; eieio();
628 par->cmap_regs[TVPADDRW] = TVPIRPPD; eieio();
629 par->cmap_regs[TVPIDATA] = init->pclk_m; eieio();
630 par->cmap_regs[TVPADDRW] = TVPIRPPD; eieio();
631 par->cmap_regs[TVPIDATA] = init->pclk_n; eieio();
632 par->cmap_regs[TVPADDRW] = TVPIRPPD; eieio();
633 par->cmap_regs[TVPIDATA] = init->pclk_p; eieio();
634
635 par->cmap_regs[TVPADDRW] = TVPIRTCC; eieio();
636 par->cmap_regs[TVPIDATA] = tcc; eieio();
637 par->cmap_regs[TVPADDRW] = TVPIRMXC; eieio();
638 par->cmap_regs[TVPIDATA] = mxc; eieio();
639 par->cmap_regs[TVPADDRW] = TVPIRMIC; eieio();
640 par->cmap_regs[TVPIDATA] = mic; eieio();
641
642 par->cmap_regs[TVPADDRW] = TVPIRPLA; eieio();
643 par->cmap_regs[TVPIDATA] = 0x00; eieio();
644 par->cmap_regs[TVPADDRW] = TVPIRLPD; eieio();
645 par->cmap_regs[TVPIDATA] = lckl_n; eieio();
646
647 par->cmap_regs[TVPADDRW] = TVPIRPLA; eieio();
648 par->cmap_regs[TVPIDATA] = 0x15; eieio();
649 par->cmap_regs[TVPADDRW] = TVPIRMLC; eieio();
650 par->cmap_regs[TVPIDATA] = mlc; eieio();
651
652 par->cmap_regs[TVPADDRW] = TVPIRPLA; eieio();
653 par->cmap_regs[TVPIDATA] = 0x2a; eieio();
654 par->cmap_regs[TVPADDRW] = TVPIRLPD; eieio();
655 par->cmap_regs[TVPIDATA] = lckl_p; eieio();
656 }
657
658 static void
659 set_imstt_regvals (struct fb_info *info, u_int bpp)
660 {
661 struct imstt_par *par = info->par;
662 struct imstt_regvals *init = &par->init;
663 __u32 ctl, pitch, byteswap, scr;
664
665 if (par->ramdac == IBM)
666 set_imstt_regvals_ibm(par, bpp);
667 else
668 set_imstt_regvals_tvp(par, bpp);
669
670 /*
671 * From what I (jsk) can gather poking around with MacsBug,
672 * bits 8 and 9 in the SCR register control endianness
673 * correction (byte swapping). These bits must be set according
674 * to the color depth as follows:
675 * Color depth Bit 9 Bit 8
676 * ========== ===== =====
677 * 8bpp 0 0
678 * 16bpp 0 1
679 * 32bpp 1 1
680 */
681 switch (bpp) {
682 default:
683 case 8:
684 ctl = 0x17b1;
685 pitch = init->pitch >> 2;
686 byteswap = 0x000;
687 break;
688 case 16:
689 ctl = 0x17b3;
690 pitch = init->pitch >> 1;
691 byteswap = 0x100;
692 break;
693 case 24:
694 ctl = 0x17b9;
695 pitch = init->pitch - (init->pitch >> 2);
696 byteswap = 0x200;
697 break;
698 case 32:
699 ctl = 0x17b5;
700 pitch = init->pitch;
701 byteswap = 0x300;
702 break;
703 }
704 if (par->ramdac == TVP)
705 ctl -= 0x30;
706
707 write_reg_le32(par->dc_regs, HES, init->hes);
708 write_reg_le32(par->dc_regs, HEB, init->heb);
709 write_reg_le32(par->dc_regs, HSB, init->hsb);
710 write_reg_le32(par->dc_regs, HT, init->ht);
711 write_reg_le32(par->dc_regs, VES, init->ves);
712 write_reg_le32(par->dc_regs, VEB, init->veb);
713 write_reg_le32(par->dc_regs, VSB, init->vsb);
714 write_reg_le32(par->dc_regs, VT, init->vt);
715 write_reg_le32(par->dc_regs, VIL, init->vil);
716 write_reg_le32(par->dc_regs, HCIV, 1);
717 write_reg_le32(par->dc_regs, VCIV, 1);
718 write_reg_le32(par->dc_regs, TCDR, 4);
719 write_reg_le32(par->dc_regs, RRCIV, 1);
720 write_reg_le32(par->dc_regs, RRSC, 0x980);
721 write_reg_le32(par->dc_regs, RRCR, 0x11);
722
723 if (par->ramdac == IBM) {
724 write_reg_le32(par->dc_regs, HRIR, 0x0100);
725 write_reg_le32(par->dc_regs, CMR, 0x00ff);
726 write_reg_le32(par->dc_regs, SRGCTL, 0x0073);
727 } else {
728 write_reg_le32(par->dc_regs, HRIR, 0x0200);
729 write_reg_le32(par->dc_regs, CMR, 0x01ff);
730 write_reg_le32(par->dc_regs, SRGCTL, 0x0003);
731 }
732
733 switch (info->fix.smem_len) {
734 case 0x200000:
735 scr = 0x059d | byteswap;
736 break;
737 /* case 0x400000:
738 case 0x800000: */
739 default:
740 pitch >>= 1;
741 scr = 0x150dd | byteswap;
742 break;
743 }
744
745 write_reg_le32(par->dc_regs, SCR, scr);
746 write_reg_le32(par->dc_regs, SPR, pitch);
747 write_reg_le32(par->dc_regs, STGCTL, ctl);
748 }
749
750 static inline void
751 set_offset (struct fb_var_screeninfo *var, struct fb_info *info)
752 {
753 struct imstt_par *par = info->par;
754 __u32 off = var->yoffset * (info->fix.line_length >> 3)
755 + ((var->xoffset * (var->bits_per_pixel >> 3)) >> 3);
756 write_reg_le32(par->dc_regs, SSR, off);
757 }
758
759 static inline void
760 set_555 (struct imstt_par *par)
761 {
762 if (par->ramdac == IBM) {
763 par->cmap_regs[PIDXHI] = 0; eieio();
764 par->cmap_regs[PIDXLO] = BPP16; eieio();
765 par->cmap_regs[PIDXDATA] = 0x01; eieio();
766 } else {
767 par->cmap_regs[TVPADDRW] = TVPIRTCC; eieio();
768 par->cmap_regs[TVPIDATA] = 0x44; eieio();
769 }
770 }
771
772 static inline void
773 set_565 (struct imstt_par *par)
774 {
775 if (par->ramdac == IBM) {
776 par->cmap_regs[PIDXHI] = 0; eieio();
777 par->cmap_regs[PIDXLO] = BPP16; eieio();
778 par->cmap_regs[PIDXDATA] = 0x03; eieio();
779 } else {
780 par->cmap_regs[TVPADDRW] = TVPIRTCC; eieio();
781 par->cmap_regs[TVPIDATA] = 0x45; eieio();
782 }
783 }
784
785 static int
786 imsttfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
787 {
788 if ((var->bits_per_pixel != 8 && var->bits_per_pixel != 16
789 && var->bits_per_pixel != 24 && var->bits_per_pixel != 32)
790 || var->xres_virtual < var->xres || var->yres_virtual < var->yres
791 || var->nonstd
792 || (var->vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED)
793 return -EINVAL;
794
795 if ((var->xres * var->yres) * (var->bits_per_pixel >> 3) > info->fix.smem_len
796 || (var->xres_virtual * var->yres_virtual) * (var->bits_per_pixel >> 3) > info->fix.smem_len)
797 return -EINVAL;
798
799 switch (var->bits_per_pixel) {
800 case 8:
801 var->red.offset = 0;
802 var->red.length = 8;
803 var->green.offset = 0;
804 var->green.length = 8;
805 var->blue.offset = 0;
806 var->blue.length = 8;
807 var->transp.offset = 0;
808 var->transp.length = 0;
809 break;
810 case 16: /* RGB 555 or 565 */
811 if (var->green.length != 6)
812 var->red.offset = 10;
813 var->red.length = 5;
814 var->green.offset = 5;
815 if (var->green.length != 6)
816 var->green.length = 5;
817 var->blue.offset = 0;
818 var->blue.length = 5;
819 var->transp.offset = 0;
820 var->transp.length = 0;
821 break;
822 case 24: /* RGB 888 */
823 var->red.offset = 16;
824 var->red.length = 8;
825 var->green.offset = 8;
826 var->green.length = 8;
827 var->blue.offset = 0;
828 var->blue.length = 8;
829 var->transp.offset = 0;
830 var->transp.length = 0;
831 break;
832 case 32: /* RGBA 8888 */
833 var->red.offset = 16;
834 var->red.length = 8;
835 var->green.offset = 8;
836 var->green.length = 8;
837 var->blue.offset = 0;
838 var->blue.length = 8;
839 var->transp.offset = 24;
840 var->transp.length = 8;
841 break;
842 }
843
844 if (var->yres == var->yres_virtual) {
845 __u32 vram = (info->fix.smem_len - (PAGE_SIZE << 2));
846 var->yres_virtual = ((vram << 3) / var->bits_per_pixel) / var->xres_virtual;
847 if (var->yres_virtual < var->yres)
848 var->yres_virtual = var->yres;
849 }
850
851 var->red.msb_right = 0;
852 var->green.msb_right = 0;
853 var->blue.msb_right = 0;
854 var->transp.msb_right = 0;
855 var->height = -1;
856 var->width = -1;
857 var->vmode = FB_VMODE_NONINTERLACED;
858 var->left_margin = var->right_margin = 16;
859 var->upper_margin = var->lower_margin = 16;
860 var->hsync_len = var->vsync_len = 8;
861 return 0;
862 }
863
864 static int
865 imsttfb_set_par(struct fb_info *info)
866 {
867 struct imstt_par *par = info->par;
868
869 if (!compute_imstt_regvals(par, info->var.xres, info->var.yres))
870 return -EINVAL;
871
872 if (info->var.green.length == 6)
873 set_565(par);
874 else
875 set_555(par);
876 set_imstt_regvals(info, info->var.bits_per_pixel);
877 info->var.pixclock = 1000000 / getclkMHz(par);
878 return 0;
879 }
880
881 static int
882 imsttfb_setcolreg (u_int regno, u_int red, u_int green, u_int blue,
883 u_int transp, struct fb_info *info)
884 {
885 struct imstt_par *par = info->par;
886 u_int bpp = info->var.bits_per_pixel;
887
888 if (regno > 255)
889 return 1;
890
891 red >>= 8;
892 green >>= 8;
893 blue >>= 8;
894
895 /* PADDRW/PDATA are the same as TVPPADDRW/TVPPDATA */
896 if (0 && bpp == 16) /* screws up X */
897 par->cmap_regs[PADDRW] = regno << 3;
898 else
899 par->cmap_regs[PADDRW] = regno;
900 eieio();
901
902 par->cmap_regs[PDATA] = red; eieio();
903 par->cmap_regs[PDATA] = green; eieio();
904 par->cmap_regs[PDATA] = blue; eieio();
905
906 if (regno < 16)
907 switch (bpp) {
908 case 16:
909 par->palette[regno] =
910 (regno << (info->var.green.length ==
911 5 ? 10 : 11)) | (regno << 5) | regno;
912 break;
913 case 24:
914 par->palette[regno] =
915 (regno << 16) | (regno << 8) | regno;
916 break;
917 case 32: {
918 int i = (regno << 8) | regno;
919 par->palette[regno] = (i << 16) |i;
920 break;
921 }
922 }
923 return 0;
924 }
925
926 static int
927 imsttfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
928 {
929 if (var->xoffset + info->var.xres > info->var.xres_virtual
930 || var->yoffset + info->var.yres > info->var.yres_virtual)
931 return -EINVAL;
932
933 info->var.xoffset = var->xoffset;
934 info->var.yoffset = var->yoffset;
935 set_offset(var, info);
936 return 0;
937 }
938
939 static int
940 imsttfb_blank(int blank, struct fb_info *info)
941 {
942 struct imstt_par *par = info->par;
943 __u32 ctrl;
944
945 ctrl = read_reg_le32(par->dc_regs, STGCTL);
946 if (blank > 0) {
947 switch (blank) {
948 case FB_BLANK_NORMAL:
949 case FB_BLANK_POWERDOWN:
950 ctrl &= ~0x00000380;
951 if (par->ramdac == IBM) {
952 par->cmap_regs[PIDXHI] = 0; eieio();
953 par->cmap_regs[PIDXLO] = MISCTL2; eieio();
954 par->cmap_regs[PIDXDATA] = 0x55; eieio();
955 par->cmap_regs[PIDXLO] = MISCTL1; eieio();
956 par->cmap_regs[PIDXDATA] = 0x11; eieio();
957 par->cmap_regs[PIDXLO] = SYNCCTL; eieio();
958 par->cmap_regs[PIDXDATA] = 0x0f; eieio();
959 par->cmap_regs[PIDXLO] = PWRMNGMT; eieio();
960 par->cmap_regs[PIDXDATA] = 0x1f; eieio();
961 par->cmap_regs[PIDXLO] = CLKCTL; eieio();
962 par->cmap_regs[PIDXDATA] = 0xc0;
963 }
964 break;
965 case FB_BLANK_VSYNC_SUSPEND:
966 ctrl &= ~0x00000020;
967 break;
968 case FB_BLANK_HSYNC_SUSPEND:
969 ctrl &= ~0x00000010;
970 break;
971 }
972 } else {
973 if (par->ramdac == IBM) {
974 ctrl |= 0x000017b0;
975 par->cmap_regs[PIDXHI] = 0; eieio();
976 par->cmap_regs[PIDXLO] = CLKCTL; eieio();
977 par->cmap_regs[PIDXDATA] = 0x01; eieio();
978 par->cmap_regs[PIDXLO] = PWRMNGMT; eieio();
979 par->cmap_regs[PIDXDATA] = 0x00; eieio();
980 par->cmap_regs[PIDXLO] = SYNCCTL; eieio();
981 par->cmap_regs[PIDXDATA] = 0x00; eieio();
982 par->cmap_regs[PIDXLO] = MISCTL1; eieio();
983 par->cmap_regs[PIDXDATA] = 0x01; eieio();
984 par->cmap_regs[PIDXLO] = MISCTL2; eieio();
985 par->cmap_regs[PIDXDATA] = 0x45; eieio();
986 } else
987 ctrl |= 0x00001780;
988 }
989 write_reg_le32(par->dc_regs, STGCTL, ctrl);
990 return 0;
991 }
992
993 static void
994 imsttfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
995 {
996 struct imstt_par *par = info->par;
997 __u32 Bpp, line_pitch, bgc, dx, dy, width, height;
998
999 bgc = rect->color;
1000 bgc |= (bgc << 8);
1001 bgc |= (bgc << 16);
1002
1003 Bpp = info->var.bits_per_pixel >> 3,
1004 line_pitch = info->fix.line_length;
1005
1006 dy = rect->dy * line_pitch;
1007 dx = rect->dx * Bpp;
1008 height = rect->height;
1009 height--;
1010 width = rect->width * Bpp;
1011 width--;
1012
1013 if (rect->rop == ROP_COPY) {
1014 while(read_reg_le32(par->dc_regs, SSTATUS) & 0x80);
1015 write_reg_le32(par->dc_regs, DSA, dy + dx);
1016 write_reg_le32(par->dc_regs, CNT, (height << 16) | width);
1017 write_reg_le32(par->dc_regs, DP_OCTL, line_pitch);
1018 write_reg_le32(par->dc_regs, BI, 0xffffffff);
1019 write_reg_le32(par->dc_regs, MBC, 0xffffffff);
1020 write_reg_le32(par->dc_regs, CLR, bgc);
1021 write_reg_le32(par->dc_regs, BLTCTL, 0x840); /* 0x200000 */
1022 while(read_reg_le32(par->dc_regs, SSTATUS) & 0x80);
1023 while(read_reg_le32(par->dc_regs, SSTATUS) & 0x40);
1024 } else {
1025 while(read_reg_le32(par->dc_regs, SSTATUS) & 0x80);
1026 write_reg_le32(par->dc_regs, DSA, dy + dx);
1027 write_reg_le32(par->dc_regs, S1SA, dy + dx);
1028 write_reg_le32(par->dc_regs, CNT, (height << 16) | width);
1029 write_reg_le32(par->dc_regs, DP_OCTL, line_pitch);
1030 write_reg_le32(par->dc_regs, SP, line_pitch);
1031 write_reg_le32(par->dc_regs, BLTCTL, 0x40005);
1032 while(read_reg_le32(par->dc_regs, SSTATUS) & 0x80);
1033 while(read_reg_le32(par->dc_regs, SSTATUS) & 0x40);
1034 }
1035 }
1036
1037 static void
1038 imsttfb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
1039 {
1040 struct imstt_par *par = info->par;
1041 __u32 Bpp, line_pitch, fb_offset_old, fb_offset_new, sp, dp_octl;
1042 __u32 cnt, bltctl, sx, sy, dx, dy, height, width;
1043
1044 Bpp = info->var.bits_per_pixel >> 3,
1045
1046 sx = area->sx * Bpp;
1047 sy = area->sy;
1048 dx = area->dx * Bpp;
1049 dy = area->dy;
1050 height = area->height;
1051 height--;
1052 width = area->width * Bpp;
1053 width--;
1054
1055 line_pitch = info->fix.line_length;
1056 bltctl = 0x05;
1057 sp = line_pitch << 16;
1058 cnt = height << 16;
1059
1060 if (sy < dy) {
1061 sy += height;
1062 dy += height;
1063 sp |= -(line_pitch) & 0xffff;
1064 dp_octl = -(line_pitch) & 0xffff;
1065 } else {
1066 sp |= line_pitch;
1067 dp_octl = line_pitch;
1068 }
1069 if (sx < dx) {
1070 sx += width;
1071 dx += width;
1072 bltctl |= 0x80;
1073 cnt |= -(width) & 0xffff;
1074 } else {
1075 cnt |= width;
1076 }
1077 fb_offset_old = sy * line_pitch + sx;
1078 fb_offset_new = dy * line_pitch + dx;
1079
1080 while(read_reg_le32(par->dc_regs, SSTATUS) & 0x80);
1081 write_reg_le32(par->dc_regs, S1SA, fb_offset_old);
1082 write_reg_le32(par->dc_regs, SP, sp);
1083 write_reg_le32(par->dc_regs, DSA, fb_offset_new);
1084 write_reg_le32(par->dc_regs, CNT, cnt);
1085 write_reg_le32(par->dc_regs, DP_OCTL, dp_octl);
1086 write_reg_le32(par->dc_regs, BLTCTL, bltctl);
1087 while(read_reg_le32(par->dc_regs, SSTATUS) & 0x80);
1088 while(read_reg_le32(par->dc_regs, SSTATUS) & 0x40);
1089 }
1090
1091 #if 0
1092 static int
1093 imsttfb_load_cursor_image(struct imstt_par *par, int width, int height, __u8 fgc)
1094 {
1095 u_int x, y;
1096
1097 if (width > 32 || height > 32)
1098 return -EINVAL;
1099
1100 if (par->ramdac == IBM) {
1101 par->cmap_regs[PIDXHI] = 1; eieio();
1102 for (x = 0; x < 0x100; x++) {
1103 par->cmap_regs[PIDXLO] = x; eieio();
1104 par->cmap_regs[PIDXDATA] = 0x00; eieio();
1105 }
1106 par->cmap_regs[PIDXHI] = 1; eieio();
1107 for (y = 0; y < height; y++)
1108 for (x = 0; x < width >> 2; x++) {
1109 par->cmap_regs[PIDXLO] = x + y * 8; eieio();
1110 par->cmap_regs[PIDXDATA] = 0xff; eieio();
1111 }
1112 par->cmap_regs[PIDXHI] = 0; eieio();
1113 par->cmap_regs[PIDXLO] = CURS1R; eieio();
1114 par->cmap_regs[PIDXDATA] = fgc; eieio();
1115 par->cmap_regs[PIDXLO] = CURS1G; eieio();
1116 par->cmap_regs[PIDXDATA] = fgc; eieio();
1117 par->cmap_regs[PIDXLO] = CURS1B; eieio();
1118 par->cmap_regs[PIDXDATA] = fgc; eieio();
1119 par->cmap_regs[PIDXLO] = CURS2R; eieio();
1120 par->cmap_regs[PIDXDATA] = fgc; eieio();
1121 par->cmap_regs[PIDXLO] = CURS2G; eieio();
1122 par->cmap_regs[PIDXDATA] = fgc; eieio();
1123 par->cmap_regs[PIDXLO] = CURS2B; eieio();
1124 par->cmap_regs[PIDXDATA] = fgc; eieio();
1125 par->cmap_regs[PIDXLO] = CURS3R; eieio();
1126 par->cmap_regs[PIDXDATA] = fgc; eieio();
1127 par->cmap_regs[PIDXLO] = CURS3G; eieio();
1128 par->cmap_regs[PIDXDATA] = fgc; eieio();
1129 par->cmap_regs[PIDXLO] = CURS3B; eieio();
1130 par->cmap_regs[PIDXDATA] = fgc; eieio();
1131 } else {
1132 par->cmap_regs[TVPADDRW] = TVPIRICC; eieio();
1133 par->cmap_regs[TVPIDATA] &= 0x03; eieio();
1134 par->cmap_regs[TVPADDRW] = 0; eieio();
1135 for (x = 0; x < 0x200; x++) {
1136 par->cmap_regs[TVPCRDAT] = 0x00; eieio();
1137 }
1138 for (x = 0; x < 0x200; x++) {
1139 par->cmap_regs[TVPCRDAT] = 0xff; eieio();
1140 }
1141 par->cmap_regs[TVPADDRW] = TVPIRICC; eieio();
1142 par->cmap_regs[TVPIDATA] &= 0x03; eieio();
1143 for (y = 0; y < height; y++)
1144 for (x = 0; x < width >> 3; x++) {
1145 par->cmap_regs[TVPADDRW] = x + y * 8; eieio();
1146 par->cmap_regs[TVPCRDAT] = 0xff; eieio();
1147 }
1148 par->cmap_regs[TVPADDRW] = TVPIRICC; eieio();
1149 par->cmap_regs[TVPIDATA] |= 0x08; eieio();
1150 for (y = 0; y < height; y++)
1151 for (x = 0; x < width >> 3; x++) {
1152 par->cmap_regs[TVPADDRW] = x + y * 8; eieio();
1153 par->cmap_regs[TVPCRDAT] = 0xff; eieio();
1154 }
1155 par->cmap_regs[TVPCADRW] = 0x00; eieio();
1156 for (x = 0; x < 12; x++)
1157 par->cmap_regs[TVPCDATA] = fgc; eieio();
1158 }
1159 return 1;
1160 }
1161
1162 static void
1163 imstt_set_cursor(struct imstt_par *par, struct fb_image *d, int on)
1164 {
1165 if (par->ramdac == IBM) {
1166 par->cmap_regs[PIDXHI] = 0; eieio();
1167 if (!on) {
1168 par->cmap_regs[PIDXLO] = CURSCTL; eieio();
1169 par->cmap_regs[PIDXDATA] = 0x00; eieio();
1170 } else {
1171 par->cmap_regs[PIDXLO] = CURSXHI; eieio();
1172 par->cmap_regs[PIDXDATA] = d->dx >> 8; eieio();
1173 par->cmap_regs[PIDXLO] = CURSXLO; eieio();
1174 par->cmap_regs[PIDXDATA] = d->dx & 0xff;eieio();
1175 par->cmap_regs[PIDXLO] = CURSYHI; eieio();
1176 par->cmap_regs[PIDXDATA] = d->dy >> 8; eieio();
1177 par->cmap_regs[PIDXLO] = CURSYLO; eieio();
1178 par->cmap_regs[PIDXDATA] = d->dy & 0xff;eieio();
1179 par->cmap_regs[PIDXLO] = CURSCTL; eieio();
1180 par->cmap_regs[PIDXDATA] = 0x02; eieio();
1181 }
1182 } else {
1183 if (!on) {
1184 par->cmap_regs[TVPADDRW] = TVPIRICC; eieio();
1185 par->cmap_regs[TVPIDATA] = 0x00; eieio();
1186 } else {
1187 __u16 x = d->dx + 0x40, y = d->dy + 0x40;
1188
1189 par->cmap_regs[TVPCXPOH] = x >> 8; eieio();
1190 par->cmap_regs[TVPCXPOL] = x & 0xff; eieio();
1191 par->cmap_regs[TVPCYPOH] = y >> 8; eieio();
1192 par->cmap_regs[TVPCYPOL] = y & 0xff; eieio();
1193 par->cmap_regs[TVPADDRW] = TVPIRICC; eieio();
1194 par->cmap_regs[TVPIDATA] = 0x02; eieio();
1195 }
1196 }
1197 }
1198
1199 static int
1200 imsttfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1201 {
1202 struct imstt_par *par = info->par;
1203 u32 flags = cursor->set, fg, bg, xx, yy;
1204
1205 if (cursor->dest == NULL && cursor->rop == ROP_XOR)
1206 return 1;
1207
1208 imstt_set_cursor(info, cursor, 0);
1209
1210 if (flags & FB_CUR_SETPOS) {
1211 xx = cursor->image.dx - info->var.xoffset;
1212 yy = cursor->image.dy - info->var.yoffset;
1213 }
1214
1215 if (flags & FB_CUR_SETSIZE) {
1216 }
1217
1218 if (flags & (FB_CUR_SETSHAPE | FB_CUR_SETCMAP)) {
1219 int fg_idx = cursor->image.fg_color;
1220 int width = (cursor->image.width+7)/8;
1221 u8 *dat = (u8 *) cursor->image.data;
1222 u8 *dst = (u8 *) cursor->dest;
1223 u8 *msk = (u8 *) cursor->mask;
1224
1225 switch (cursor->rop) {
1226 case ROP_XOR:
1227 for (i = 0; i < cursor->image.height; i++) {
1228 for (j = 0; j < width; j++) {
1229 d_idx = i * MAX_CURS/8 + j;
1230 data[d_idx] = byte_rev[dat[s_idx] ^
1231 dst[s_idx]];
1232 mask[d_idx] = byte_rev[msk[s_idx]];
1233 s_idx++;
1234 }
1235 }
1236 break;
1237 case ROP_COPY:
1238 default:
1239 for (i = 0; i < cursor->image.height; i++) {
1240 for (j = 0; j < width; j++) {
1241 d_idx = i * MAX_CURS/8 + j;
1242 data[d_idx] = byte_rev[dat[s_idx]];
1243 mask[d_idx] = byte_rev[msk[s_idx]];
1244 s_idx++;
1245 }
1246 }
1247 break;
1248 }
1249
1250 fg = ((info->cmap.red[fg_idx] & 0xf8) << 7) |
1251 ((info->cmap.green[fg_idx] & 0xf8) << 2) |
1252 ((info->cmap.blue[fg_idx] & 0xf8) >> 3) | 1 << 15;
1253
1254 imsttfb_load_cursor_image(par, xx, yy, fgc);
1255 }
1256 if (cursor->enable)
1257 imstt_set_cursor(info, cursor, 1);
1258 return 0;
1259 }
1260 #endif
1261
1262 #define FBIMSTT_SETREG 0x545401
1263 #define FBIMSTT_GETREG 0x545402
1264 #define FBIMSTT_SETCMAPREG 0x545403
1265 #define FBIMSTT_GETCMAPREG 0x545404
1266 #define FBIMSTT_SETIDXREG 0x545405
1267 #define FBIMSTT_GETIDXREG 0x545406
1268
1269 static int
1270 imsttfb_ioctl(struct fb_info *info, u_int cmd, u_long arg)
1271 {
1272 struct imstt_par *par = info->par;
1273 void __user *argp = (void __user *)arg;
1274 __u32 reg[2];
1275 __u8 idx[2];
1276
1277 switch (cmd) {
1278 case FBIMSTT_SETREG:
1279 if (copy_from_user(reg, argp, 8) || reg[0] > (0x1000 - sizeof(reg[0])) / sizeof(reg[0]))
1280 return -EFAULT;
1281 write_reg_le32(par->dc_regs, reg[0], reg[1]);
1282 return 0;
1283 case FBIMSTT_GETREG:
1284 if (copy_from_user(reg, argp, 4) || reg[0] > (0x1000 - sizeof(reg[0])) / sizeof(reg[0]))
1285 return -EFAULT;
1286 reg[1] = read_reg_le32(par->dc_regs, reg[0]);
1287 if (copy_to_user((void __user *)(arg + 4), &reg[1], 4))
1288 return -EFAULT;
1289 return 0;
1290 case FBIMSTT_SETCMAPREG:
1291 if (copy_from_user(reg, argp, 8) || reg[0] > (0x1000 - sizeof(reg[0])) / sizeof(reg[0]))
1292 return -EFAULT;
1293 write_reg_le32(((u_int __iomem *)par->cmap_regs), reg[0], reg[1]);
1294 return 0;
1295 case FBIMSTT_GETCMAPREG:
1296 if (copy_from_user(reg, argp, 4) || reg[0] > (0x1000 - sizeof(reg[0])) / sizeof(reg[0]))
1297 return -EFAULT;
1298 reg[1] = read_reg_le32(((u_int __iomem *)par->cmap_regs), reg[0]);
1299 if (copy_to_user((void __user *)(arg + 4), &reg[1], 4))
1300 return -EFAULT;
1301 return 0;
1302 case FBIMSTT_SETIDXREG:
1303 if (copy_from_user(idx, argp, 2))
1304 return -EFAULT;
1305 par->cmap_regs[PIDXHI] = 0; eieio();
1306 par->cmap_regs[PIDXLO] = idx[0]; eieio();
1307 par->cmap_regs[PIDXDATA] = idx[1]; eieio();
1308 return 0;
1309 case FBIMSTT_GETIDXREG:
1310 if (copy_from_user(idx, argp, 1))
1311 return -EFAULT;
1312 par->cmap_regs[PIDXHI] = 0; eieio();
1313 par->cmap_regs[PIDXLO] = idx[0]; eieio();
1314 idx[1] = par->cmap_regs[PIDXDATA];
1315 if (copy_to_user((void __user *)(arg + 1), &idx[1], 1))
1316 return -EFAULT;
1317 return 0;
1318 default:
1319 return -ENOIOCTLCMD;
1320 }
1321 }
1322
1323 static struct pci_device_id imsttfb_pci_tbl[] = {
1324 { PCI_VENDOR_ID_IMS, PCI_DEVICE_ID_IMS_TT128,
1325 PCI_ANY_ID, PCI_ANY_ID, 0, 0, IBM },
1326 { PCI_VENDOR_ID_IMS, PCI_DEVICE_ID_IMS_TT3D,
1327 PCI_ANY_ID, PCI_ANY_ID, 0, 0, TVP },
1328 { 0, }
1329 };
1330
1331 MODULE_DEVICE_TABLE(pci, imsttfb_pci_tbl);
1332
1333 static struct pci_driver imsttfb_pci_driver = {
1334 .name = "imsttfb",
1335 .id_table = imsttfb_pci_tbl,
1336 .probe = imsttfb_probe,
1337 .remove = __devexit_p(imsttfb_remove),
1338 };
1339
1340 static struct fb_ops imsttfb_ops = {
1341 .owner = THIS_MODULE,
1342 .fb_check_var = imsttfb_check_var,
1343 .fb_set_par = imsttfb_set_par,
1344 .fb_setcolreg = imsttfb_setcolreg,
1345 .fb_pan_display = imsttfb_pan_display,
1346 .fb_blank = imsttfb_blank,
1347 .fb_fillrect = imsttfb_fillrect,
1348 .fb_copyarea = imsttfb_copyarea,
1349 .fb_imageblit = cfb_imageblit,
1350 .fb_ioctl = imsttfb_ioctl,
1351 };
1352
1353 static void __devinit
1354 init_imstt(struct fb_info *info)
1355 {
1356 struct imstt_par *par = info->par;
1357 __u32 i, tmp, *ip, *end;
1358
1359 tmp = read_reg_le32(par->dc_regs, PRC);
1360 if (par->ramdac == IBM)
1361 info->fix.smem_len = (tmp & 0x0004) ? 0x400000 : 0x200000;
1362 else
1363 info->fix.smem_len = 0x800000;
1364
1365 ip = (__u32 *)info->screen_base;
1366 end = (__u32 *)(info->screen_base + info->fix.smem_len);
1367 while (ip < end)
1368 *ip++ = 0;
1369
1370 /* initialize the card */
1371 tmp = read_reg_le32(par->dc_regs, STGCTL);
1372 write_reg_le32(par->dc_regs, STGCTL, tmp & ~0x1);
1373 write_reg_le32(par->dc_regs, SSR, 0);
1374
1375 /* set default values for DAC registers */
1376 if (par->ramdac == IBM) {
1377 par->cmap_regs[PPMASK] = 0xff; eieio();
1378 par->cmap_regs[PIDXHI] = 0; eieio();
1379 for (i = 0; i < sizeof(ibm_initregs) / sizeof(*ibm_initregs); i++) {
1380 par->cmap_regs[PIDXLO] = ibm_initregs[i].addr; eieio();
1381 par->cmap_regs[PIDXDATA] = ibm_initregs[i].value; eieio();
1382 }
1383 } else {
1384 for (i = 0; i < sizeof(tvp_initregs) / sizeof(*tvp_initregs); i++) {
1385 par->cmap_regs[TVPADDRW] = tvp_initregs[i].addr; eieio();
1386 par->cmap_regs[TVPIDATA] = tvp_initregs[i].value; eieio();
1387 }
1388 }
1389
1390 #if USE_NV_MODES && defined(CONFIG_PPC)
1391 {
1392 int vmode = init_vmode, cmode = init_cmode;
1393
1394 if (vmode == -1) {
1395 vmode = nvram_read_byte(NV_VMODE);
1396 if (vmode <= 0 || vmode > VMODE_MAX)
1397 vmode = VMODE_640_480_67;
1398 }
1399 if (cmode == -1) {
1400 cmode = nvram_read_byte(NV_CMODE);
1401 if (cmode < CMODE_8 || cmode > CMODE_32)
1402 cmode = CMODE_8;
1403 }
1404 if (mac_vmode_to_var(vmode, cmode, &info->var)) {
1405 info->var.xres = info->var.xres_virtual = INIT_XRES;
1406 info->var.yres = info->var.yres_virtual = INIT_YRES;
1407 info->var.bits_per_pixel = INIT_BPP;
1408 }
1409 }
1410 #else
1411 info->var.xres = info->var.xres_virtual = INIT_XRES;
1412 info->var.yres = info->var.yres_virtual = INIT_YRES;
1413 info->var.bits_per_pixel = INIT_BPP;
1414 #endif
1415
1416 if ((info->var.xres * info->var.yres) * (info->var.bits_per_pixel >> 3) > info->fix.smem_len
1417 || !(compute_imstt_regvals(par, info->var.xres, info->var.yres))) {
1418 printk("imsttfb: %ux%ux%u not supported\n", info->var.xres, info->var.yres, info->var.bits_per_pixel);
1419 framebuffer_release(info);
1420 return;
1421 }
1422
1423 sprintf(info->fix.id, "IMS TT (%s)", par->ramdac == IBM ? "IBM" : "TVP");
1424 info->fix.mmio_len = 0x1000;
1425 info->fix.accel = FB_ACCEL_IMS_TWINTURBO;
1426 info->fix.type = FB_TYPE_PACKED_PIXELS;
1427 info->fix.visual = info->var.bits_per_pixel == 8 ? FB_VISUAL_PSEUDOCOLOR
1428 : FB_VISUAL_DIRECTCOLOR;
1429 info->fix.line_length = info->var.xres * (info->var.bits_per_pixel >> 3);
1430 info->fix.xpanstep = 8;
1431 info->fix.ypanstep = 1;
1432 info->fix.ywrapstep = 0;
1433
1434 info->var.accel_flags = FB_ACCELF_TEXT;
1435
1436 // if (par->ramdac == IBM)
1437 // imstt_cursor_init(info);
1438 if (info->var.green.length == 6)
1439 set_565(par);
1440 else
1441 set_555(par);
1442 set_imstt_regvals(info, info->var.bits_per_pixel);
1443
1444 info->var.pixclock = 1000000 / getclkMHz(par);
1445
1446 info->fbops = &imsttfb_ops;
1447 info->flags = FBINFO_DEFAULT |
1448 FBINFO_HWACCEL_COPYAREA |
1449 FBINFO_HWACCEL_FILLRECT |
1450 FBINFO_HWACCEL_YPAN;
1451
1452 fb_alloc_cmap(&info->cmap, 0, 0);
1453
1454 if (register_framebuffer(info) < 0) {
1455 framebuffer_release(info);
1456 return;
1457 }
1458
1459 tmp = (read_reg_le32(par->dc_regs, SSTATUS) & 0x0f00) >> 8;
1460 printk("fb%u: %s frame buffer; %uMB vram; chip version %u\n",
1461 info->node, info->fix.id, info->fix.smem_len >> 20, tmp);
1462 }
1463
1464 static int __devinit
1465 imsttfb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1466 {
1467 unsigned long addr, size;
1468 struct imstt_par *par;
1469 struct fb_info *info;
1470 #ifdef CONFIG_PPC_OF
1471 struct device_node *dp;
1472
1473 dp = pci_device_to_OF_node(pdev);
1474 if(dp)
1475 printk(KERN_INFO "%s: OF name %s\n",__FUNCTION__, dp->name);
1476 else
1477 printk(KERN_ERR "imsttfb: no OF node for pci device\n");
1478 #endif /* CONFIG_PPC_OF */
1479
1480 info = framebuffer_alloc(sizeof(struct imstt_par), &pdev->dev);
1481
1482 if (!info) {
1483 printk(KERN_ERR "imsttfb: Can't allocate memory\n");
1484 return -ENOMEM;
1485 }
1486
1487 par = info->par;
1488
1489 addr = pci_resource_start (pdev, 0);
1490 size = pci_resource_len (pdev, 0);
1491
1492 if (!request_mem_region(addr, size, "imsttfb")) {
1493 printk(KERN_ERR "imsttfb: Can't reserve memory region\n");
1494 framebuffer_release(info);
1495 return -ENODEV;
1496 }
1497
1498 switch (pdev->device) {
1499 case PCI_DEVICE_ID_IMS_TT128: /* IMS,tt128mbA */
1500 par->ramdac = IBM;
1501 #ifdef CONFIG_PPC_OF
1502 if (dp && ((strcmp(dp->name, "IMS,tt128mb8") == 0) ||
1503 (strcmp(dp->name, "IMS,tt128mb8A") == 0)))
1504 par->ramdac = TVP;
1505 #endif /* CONFIG_PPC_OF */
1506 break;
1507 case PCI_DEVICE_ID_IMS_TT3D: /* IMS,tt3d */
1508 par->ramdac = TVP;
1509 break;
1510 default:
1511 printk(KERN_INFO "imsttfb: Device 0x%x unknown, "
1512 "contact maintainer.\n", pdev->device);
1513 release_mem_region(addr, size);
1514 framebuffer_release(info);
1515 return -ENODEV;
1516 }
1517
1518 info->fix.smem_start = addr;
1519 info->screen_base = (__u8 *)ioremap(addr, par->ramdac == IBM ?
1520 0x400000 : 0x800000);
1521 info->fix.mmio_start = addr + 0x800000;
1522 par->dc_regs = ioremap(addr + 0x800000, 0x1000);
1523 par->cmap_regs_phys = addr + 0x840000;
1524 par->cmap_regs = (__u8 *)ioremap(addr + 0x840000, 0x1000);
1525 info->pseudo_palette = par->palette;
1526 init_imstt(info);
1527
1528 pci_set_drvdata(pdev, info);
1529 return 0;
1530 }
1531
1532 static void __devexit
1533 imsttfb_remove(struct pci_dev *pdev)
1534 {
1535 struct fb_info *info = pci_get_drvdata(pdev);
1536 struct imstt_par *par = info->par;
1537 int size = pci_resource_len(pdev, 0);
1538
1539 unregister_framebuffer(info);
1540 iounmap(par->cmap_regs);
1541 iounmap(par->dc_regs);
1542 iounmap(info->screen_base);
1543 release_mem_region(info->fix.smem_start, size);
1544 framebuffer_release(info);
1545 }
1546
1547 #ifndef MODULE
1548 static int __init
1549 imsttfb_setup(char *options)
1550 {
1551 char *this_opt;
1552
1553 if (!options || !*options)
1554 return 0;
1555
1556 while ((this_opt = strsep(&options, ",")) != NULL) {
1557 if (!strncmp(this_opt, "font:", 5)) {
1558 char *p;
1559 int i;
1560
1561 p = this_opt + 5;
1562 for (i = 0; i < sizeof(fontname) - 1; i++)
1563 if (!*p || *p == ' ' || *p == ',')
1564 break;
1565 memcpy(fontname, this_opt + 5, i);
1566 fontname[i] = 0;
1567 } else if (!strncmp(this_opt, "inverse", 7)) {
1568 inverse = 1;
1569 fb_invert_cmaps();
1570 }
1571 #if defined(CONFIG_PPC)
1572 else if (!strncmp(this_opt, "vmode:", 6)) {
1573 int vmode = simple_strtoul(this_opt+6, NULL, 0);
1574 if (vmode > 0 && vmode <= VMODE_MAX)
1575 init_vmode = vmode;
1576 } else if (!strncmp(this_opt, "cmode:", 6)) {
1577 int cmode = simple_strtoul(this_opt+6, NULL, 0);
1578 switch (cmode) {
1579 case CMODE_8:
1580 case 8:
1581 init_cmode = CMODE_8;
1582 break;
1583 case CMODE_16:
1584 case 15:
1585 case 16:
1586 init_cmode = CMODE_16;
1587 break;
1588 case CMODE_32:
1589 case 24:
1590 case 32:
1591 init_cmode = CMODE_32;
1592 break;
1593 }
1594 }
1595 #endif
1596 }
1597 return 0;
1598 }
1599
1600 #endif /* MODULE */
1601
1602 static int __init imsttfb_init(void)
1603 {
1604 #ifndef MODULE
1605 char *option = NULL;
1606
1607 if (fb_get_options("imsttfb", &option))
1608 return -ENODEV;
1609
1610 imsttfb_setup(option);
1611 #endif
1612 return pci_register_driver(&imsttfb_pci_driver);
1613 }
1614
1615 static void __exit imsttfb_exit(void)
1616 {
1617 pci_unregister_driver(&imsttfb_pci_driver);
1618 }
1619
1620 MODULE_LICENSE("GPL");
1621
1622 module_init(imsttfb_init);
1623 module_exit(imsttfb_exit);
1624
Support for the Chinese Samsung S3C2440 based development boards