2 * linux/drivers/video/tgafb.c -- DEC 21030 TGA frame buffer device
4 * Copyright (C) 1995 Jay Estabrook
5 * Copyright (C) 1997 Geert Uytterhoeven
6 * Copyright (C) 1999,2000 Martin Lucina, Tom Zerucha
7 * Copyright (C) 2002 Richard Henderson
8 * Copyright (C) 2006 Maciej W. Rozycki
10 * This file is subject to the terms and conditions of the GNU General Public
11 * License. See the file COPYING in the main directory of this archive for
15 #include <linux/bitrev.h>
16 #include <linux/delay.h>
17 #include <linux/device.h>
18 #include <linux/errno.h>
20 #include <linux/init.h>
21 #include <linux/ioport.h>
22 #include <linux/kernel.h>
24 #include <linux/module.h>
25 #include <linux/pci.h>
26 #include <linux/selection.h>
27 #include <linux/slab.h>
28 #include <linux/string.h>
33 #include <video/tgafb.h>
36 #define TGA_BUS_PCI(dev) (dev->bus == &pci_bus_type)
38 #define TGA_BUS_PCI(dev) 0
42 #define TGA_BUS_TC(dev) (dev->bus == &tc_bus_type)
44 #define TGA_BUS_TC(dev) 0
51 static int tgafb_check_var(struct fb_var_screeninfo *, struct fb_info *);
52 static int tgafb_set_par(struct fb_info *);
53 static void tgafb_set_pll(struct tga_par *, int);
54 static int tgafb_setcolreg(unsigned, unsigned, unsigned, unsigned,
55 unsigned, struct fb_info *);
56 static int tgafb_blank(int, struct fb_info *);
57 static void tgafb_init_fix(struct fb_info *);
59 static void tgafb_imageblit(struct fb_info *, const struct fb_image *);
60 static void tgafb_fillrect(struct fb_info *, const struct fb_fillrect *);
61 static void tgafb_copyarea(struct fb_info *, const struct fb_copyarea *);
62 static int tgafb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info);
64 static int __devinit tgafb_register(struct device *dev);
65 static void __devexit tgafb_unregister(struct device *dev);
67 static const char *mode_option;
68 static const char *mode_option_pci = "640x480@60";
69 static const char *mode_option_tc = "1280x1024@72";
72 static struct pci_driver tgafb_pci_driver;
73 static struct tc_driver tgafb_tc_driver;
76 * Frame buffer operations
79 static struct fb_ops tgafb_ops = {
81 .fb_check_var = tgafb_check_var,
82 .fb_set_par = tgafb_set_par,
83 .fb_setcolreg = tgafb_setcolreg,
84 .fb_blank = tgafb_blank,
85 .fb_pan_display = tgafb_pan_display,
86 .fb_fillrect = tgafb_fillrect,
87 .fb_copyarea = tgafb_copyarea,
88 .fb_imageblit = tgafb_imageblit,
94 * PCI registration operations
96 static int __devinit tgafb_pci_register(struct pci_dev *,
97 const struct pci_device_id *);
98 static void __devexit tgafb_pci_unregister(struct pci_dev *);
100 static struct pci_device_id const tgafb_pci_table[] = {
101 { PCI_DEVICE(PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TGA) },
104 MODULE_DEVICE_TABLE(pci, tgafb_pci_table);
106 static struct pci_driver tgafb_pci_driver = {
108 .id_table = tgafb_pci_table,
109 .probe = tgafb_pci_register,
110 .remove = __devexit_p(tgafb_pci_unregister),
114 tgafb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
116 return tgafb_register(&pdev->dev);
119 static void __devexit
120 tgafb_pci_unregister(struct pci_dev *pdev)
122 tgafb_unregister(&pdev->dev);
124 #endif /* CONFIG_PCI */
128 * TC registration operations
130 static int __devinit tgafb_tc_register(struct device *);
131 static int __devexit tgafb_tc_unregister(struct device *);
133 static struct tc_device_id const tgafb_tc_table[] = {
134 { "DEC ", "PMAGD-AA" },
135 { "DEC ", "PMAGD " },
138 MODULE_DEVICE_TABLE(tc, tgafb_tc_table);
140 static struct tc_driver tgafb_tc_driver = {
141 .id_table = tgafb_tc_table,
145 .probe = tgafb_tc_register,
146 .remove = __devexit_p(tgafb_tc_unregister),
151 tgafb_tc_register(struct device *dev)
153 int status = tgafb_register(dev);
160 tgafb_tc_unregister(struct device *dev)
163 tgafb_unregister(dev);
166 #endif /* CONFIG_TC */
170 * tgafb_check_var - Optional function. Validates a var passed in.
171 * @var: frame buffer variable screen structure
172 * @info: frame buffer structure that represents a single frame buffer
175 tgafb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
177 struct tga_par *par = (struct tga_par *)info->par;
179 if (par->tga_type == TGA_TYPE_8PLANE) {
180 if (var->bits_per_pixel != 8)
183 if (var->bits_per_pixel != 32)
186 var->red.length = var->green.length = var->blue.length = 8;
187 if (var->bits_per_pixel == 32) {
188 var->red.offset = 16;
189 var->green.offset = 8;
190 var->blue.offset = 0;
193 if (var->xres_virtual != var->xres || var->yres_virtual != var->yres)
197 if (1000000000 / var->pixclock > TGA_PLL_MAX_FREQ)
199 if ((var->vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED)
202 /* Some of the acceleration routines assume the line width is
203 a multiple of 64 bytes. */
204 if (var->xres * (par->tga_type == TGA_TYPE_8PLANE ? 1 : 4) % 64)
211 * tgafb_set_par - Optional function. Alters the hardware state.
212 * @info: frame buffer structure that represents a single frame buffer
215 tgafb_set_par(struct fb_info *info)
217 static unsigned int const deep_presets[4] = {
223 static unsigned int const rasterop_presets[4] = {
229 static unsigned int const mode_presets[4] = {
235 static unsigned int const base_addr_presets[4] = {
242 struct tga_par *par = (struct tga_par *) info->par;
243 int tga_bus_pci = TGA_BUS_PCI(par->dev);
244 int tga_bus_tc = TGA_BUS_TC(par->dev);
245 u32 htimings, vtimings, pll_freq;
249 /* Encode video timings. */
250 htimings = (((info->var.xres/4) & TGA_HORIZ_ACT_LSB)
251 | (((info->var.xres/4) & 0x600 << 19) & TGA_HORIZ_ACT_MSB));
252 vtimings = (info->var.yres & TGA_VERT_ACTIVE);
253 htimings |= ((info->var.right_margin/4) << 9) & TGA_HORIZ_FP;
254 vtimings |= (info->var.lower_margin << 11) & TGA_VERT_FP;
255 htimings |= ((info->var.hsync_len/4) << 14) & TGA_HORIZ_SYNC;
256 vtimings |= (info->var.vsync_len << 16) & TGA_VERT_SYNC;
257 htimings |= ((info->var.left_margin/4) << 21) & TGA_HORIZ_BP;
258 vtimings |= (info->var.upper_margin << 22) & TGA_VERT_BP;
260 if (info->var.sync & FB_SYNC_HOR_HIGH_ACT)
261 htimings |= TGA_HORIZ_POLARITY;
262 if (info->var.sync & FB_SYNC_VERT_HIGH_ACT)
263 vtimings |= TGA_VERT_POLARITY;
265 par->htimings = htimings;
266 par->vtimings = vtimings;
268 par->sync_on_green = !!(info->var.sync & FB_SYNC_ON_GREEN);
270 /* Store other useful values in par. */
271 par->xres = info->var.xres;
272 par->yres = info->var.yres;
273 par->pll_freq = pll_freq = 1000000000 / info->var.pixclock;
274 par->bits_per_pixel = info->var.bits_per_pixel;
276 tga_type = par->tga_type;
278 /* First, disable video. */
279 TGA_WRITE_REG(par, TGA_VALID_VIDEO | TGA_VALID_BLANK, TGA_VALID_REG);
281 /* Write the DEEP register. */
282 while (TGA_READ_REG(par, TGA_CMD_STAT_REG) & 1) /* wait for not busy */
285 TGA_WRITE_REG(par, deep_presets[tga_type] |
286 (par->sync_on_green ? 0x0 : 0x00010000),
288 while (TGA_READ_REG(par, TGA_CMD_STAT_REG) & 1) /* wait for not busy */
292 /* Write some more registers. */
293 TGA_WRITE_REG(par, rasterop_presets[tga_type], TGA_RASTEROP_REG);
294 TGA_WRITE_REG(par, mode_presets[tga_type], TGA_MODE_REG);
295 TGA_WRITE_REG(par, base_addr_presets[tga_type], TGA_BASE_ADDR_REG);
297 /* Calculate & write the PLL. */
298 tgafb_set_pll(par, pll_freq);
300 /* Write some more registers. */
301 TGA_WRITE_REG(par, 0xffffffff, TGA_PLANEMASK_REG);
302 TGA_WRITE_REG(par, 0xffffffff, TGA_PIXELMASK_REG);
304 /* Init video timing regs. */
305 TGA_WRITE_REG(par, htimings, TGA_HORIZ_REG);
306 TGA_WRITE_REG(par, vtimings, TGA_VERT_REG);
308 /* Initalise RAMDAC. */
309 if (tga_type == TGA_TYPE_8PLANE && tga_bus_pci) {
311 /* Init BT485 RAMDAC registers. */
312 BT485_WRITE(par, 0xa2 | (par->sync_on_green ? 0x8 : 0x0),
314 BT485_WRITE(par, 0x01, BT485_ADDR_PAL_WRITE);
315 BT485_WRITE(par, 0x14, BT485_CMD_3); /* cursor 64x64 */
316 BT485_WRITE(par, 0x40, BT485_CMD_1);
317 BT485_WRITE(par, 0x20, BT485_CMD_2); /* cursor off, for now */
318 BT485_WRITE(par, 0xff, BT485_PIXEL_MASK);
320 /* Fill palette registers. */
321 BT485_WRITE(par, 0x00, BT485_ADDR_PAL_WRITE);
322 TGA_WRITE_REG(par, BT485_DATA_PAL, TGA_RAMDAC_SETUP_REG);
324 for (i = 0; i < 256 * 3; i += 4) {
325 TGA_WRITE_REG(par, 0x55 | (BT485_DATA_PAL << 8),
327 TGA_WRITE_REG(par, 0x00 | (BT485_DATA_PAL << 8),
329 TGA_WRITE_REG(par, 0x00 | (BT485_DATA_PAL << 8),
331 TGA_WRITE_REG(par, 0x00 | (BT485_DATA_PAL << 8),
335 } else if (tga_type == TGA_TYPE_8PLANE && tga_bus_tc) {
337 /* Init BT459 RAMDAC registers. */
338 BT459_WRITE(par, BT459_REG_ACC, BT459_CMD_REG_0, 0x40);
339 BT459_WRITE(par, BT459_REG_ACC, BT459_CMD_REG_1, 0x00);
340 BT459_WRITE(par, BT459_REG_ACC, BT459_CMD_REG_2,
341 (par->sync_on_green ? 0xc0 : 0x40));
343 BT459_WRITE(par, BT459_REG_ACC, BT459_CUR_CMD_REG, 0x00);
345 /* Fill the palette. */
346 BT459_LOAD_ADDR(par, 0x0000);
347 TGA_WRITE_REG(par, BT459_PALETTE << 2, TGA_RAMDAC_SETUP_REG);
349 for (i = 0; i < 256 * 3; i += 4) {
350 TGA_WRITE_REG(par, 0x55, TGA_RAMDAC_REG);
351 TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG);
352 TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG);
353 TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG);
356 } else { /* 24-plane or 24plusZ */
358 /* Init BT463 RAMDAC registers. */
359 BT463_WRITE(par, BT463_REG_ACC, BT463_CMD_REG_0, 0x40);
360 BT463_WRITE(par, BT463_REG_ACC, BT463_CMD_REG_1, 0x08);
361 BT463_WRITE(par, BT463_REG_ACC, BT463_CMD_REG_2,
362 (par->sync_on_green ? 0xc0 : 0x40));
364 BT463_WRITE(par, BT463_REG_ACC, BT463_READ_MASK_0, 0xff);
365 BT463_WRITE(par, BT463_REG_ACC, BT463_READ_MASK_1, 0xff);
366 BT463_WRITE(par, BT463_REG_ACC, BT463_READ_MASK_2, 0xff);
367 BT463_WRITE(par, BT463_REG_ACC, BT463_READ_MASK_3, 0x0f);
369 BT463_WRITE(par, BT463_REG_ACC, BT463_BLINK_MASK_0, 0x00);
370 BT463_WRITE(par, BT463_REG_ACC, BT463_BLINK_MASK_1, 0x00);
371 BT463_WRITE(par, BT463_REG_ACC, BT463_BLINK_MASK_2, 0x00);
372 BT463_WRITE(par, BT463_REG_ACC, BT463_BLINK_MASK_3, 0x00);
374 /* Fill the palette. */
375 BT463_LOAD_ADDR(par, 0x0000);
376 TGA_WRITE_REG(par, BT463_PALETTE << 2, TGA_RAMDAC_SETUP_REG);
378 #ifdef CONFIG_HW_CONSOLE
379 for (i = 0; i < 16; i++) {
380 int j = color_table[i];
382 TGA_WRITE_REG(par, default_red[j], TGA_RAMDAC_REG);
383 TGA_WRITE_REG(par, default_grn[j], TGA_RAMDAC_REG);
384 TGA_WRITE_REG(par, default_blu[j], TGA_RAMDAC_REG);
386 for (i = 0; i < 512 * 3; i += 4) {
388 for (i = 0; i < 528 * 3; i += 4) {
390 TGA_WRITE_REG(par, 0x55, TGA_RAMDAC_REG);
391 TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG);
392 TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG);
393 TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG);
396 /* Fill window type table after start of vertical retrace. */
397 while (!(TGA_READ_REG(par, TGA_INTR_STAT_REG) & 0x01))
399 TGA_WRITE_REG(par, 0x01, TGA_INTR_STAT_REG);
401 while (!(TGA_READ_REG(par, TGA_INTR_STAT_REG) & 0x01))
403 TGA_WRITE_REG(par, 0x01, TGA_INTR_STAT_REG);
405 BT463_LOAD_ADDR(par, BT463_WINDOW_TYPE_BASE);
406 TGA_WRITE_REG(par, BT463_REG_ACC << 2, TGA_RAMDAC_SETUP_REG);
408 for (i = 0; i < 16; i++) {
409 TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG);
410 TGA_WRITE_REG(par, 0x01, TGA_RAMDAC_REG);
411 TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG);
416 /* Finally, enable video scan (and pray for the monitor... :-) */
417 TGA_WRITE_REG(par, TGA_VALID_VIDEO, TGA_VALID_REG);
422 #define DIFFCHECK(X) \
425 int delta = f - (TGA_PLL_BASE_FREQ * (X)) / (r << shift); \
428 if (delta < min_diff) \
429 min_diff = delta, vm = m, va = a, vr = r; \
434 tgafb_set_pll(struct tga_par *par, int f)
436 int n, shift, base, min_diff, target;
437 int r,a,m,vm = 34, va = 1, vr = 30;
439 for (r = 0 ; r < 12 ; r++)
440 TGA_WRITE_REG(par, !r, TGA_CLOCK_REG);
442 if (f > TGA_PLL_MAX_FREQ)
443 f = TGA_PLL_MAX_FREQ;
445 if (f >= TGA_PLL_MAX_FREQ / 2)
447 else if (f >= TGA_PLL_MAX_FREQ / 4)
452 TGA_WRITE_REG(par, shift & 1, TGA_CLOCK_REG);
453 TGA_WRITE_REG(par, shift >> 1, TGA_CLOCK_REG);
455 for (r = 0 ; r < 10 ; r++)
456 TGA_WRITE_REG(par, 0, TGA_CLOCK_REG);
459 TGA_WRITE_REG(par, 0, TGA_CLOCK_REG);
460 TGA_WRITE_REG(par, 0, TGA_CLOCK_REG);
462 else if (f <= 200000) {
463 TGA_WRITE_REG(par, 1, TGA_CLOCK_REG);
464 TGA_WRITE_REG(par, 0, TGA_CLOCK_REG);
467 TGA_WRITE_REG(par, 0, TGA_CLOCK_REG);
468 TGA_WRITE_REG(par, 1, TGA_CLOCK_REG);
471 TGA_WRITE_REG(par, 1, TGA_CLOCK_REG);
472 TGA_WRITE_REG(par, 0, TGA_CLOCK_REG);
473 TGA_WRITE_REG(par, 0, TGA_CLOCK_REG);
474 TGA_WRITE_REG(par, 1, TGA_CLOCK_REG);
475 TGA_WRITE_REG(par, 0, TGA_CLOCK_REG);
476 TGA_WRITE_REG(par, 1, TGA_CLOCK_REG);
478 target = (f << shift) / TGA_PLL_BASE_FREQ;
479 min_diff = TGA_PLL_MAX_FREQ;
486 for (n = base < 7 ? 7 : base; n < base + target && n < 449; n++) {
487 m = ((n + 3) / 7) - 1;
489 DIFFCHECK((m + 1) * 7);
491 DIFFCHECK((m + 1) * 7);
502 for (r = 0; r < 8; r++)
503 TGA_WRITE_REG(par, (vm >> r) & 1, TGA_CLOCK_REG);
504 for (r = 0; r < 8 ; r++)
505 TGA_WRITE_REG(par, (va >> r) & 1, TGA_CLOCK_REG);
506 for (r = 0; r < 7 ; r++)
507 TGA_WRITE_REG(par, (vr >> r) & 1, TGA_CLOCK_REG);
508 TGA_WRITE_REG(par, ((vr >> 7) & 1)|2, TGA_CLOCK_REG);
513 * tgafb_setcolreg - Optional function. Sets a color register.
514 * @regno: boolean, 0 copy local, 1 get_user() function
515 * @red: frame buffer colormap structure
516 * @green: The green value which can be up to 16 bits wide
517 * @blue: The blue value which can be up to 16 bits wide.
518 * @transp: If supported the alpha value which can be up to 16 bits wide.
519 * @info: frame buffer info structure
522 tgafb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue,
523 unsigned transp, struct fb_info *info)
525 struct tga_par *par = (struct tga_par *) info->par;
526 int tga_bus_pci = TGA_BUS_PCI(par->dev);
527 int tga_bus_tc = TGA_BUS_TC(par->dev);
535 if (par->tga_type == TGA_TYPE_8PLANE && tga_bus_pci) {
536 BT485_WRITE(par, regno, BT485_ADDR_PAL_WRITE);
537 TGA_WRITE_REG(par, BT485_DATA_PAL, TGA_RAMDAC_SETUP_REG);
538 TGA_WRITE_REG(par, red|(BT485_DATA_PAL<<8),TGA_RAMDAC_REG);
539 TGA_WRITE_REG(par, green|(BT485_DATA_PAL<<8),TGA_RAMDAC_REG);
540 TGA_WRITE_REG(par, blue|(BT485_DATA_PAL<<8),TGA_RAMDAC_REG);
541 } else if (par->tga_type == TGA_TYPE_8PLANE && tga_bus_tc) {
542 BT459_LOAD_ADDR(par, regno);
543 TGA_WRITE_REG(par, BT459_PALETTE << 2, TGA_RAMDAC_SETUP_REG);
544 TGA_WRITE_REG(par, red, TGA_RAMDAC_REG);
545 TGA_WRITE_REG(par, green, TGA_RAMDAC_REG);
546 TGA_WRITE_REG(par, blue, TGA_RAMDAC_REG);
549 u32 value = (regno << 16) | (regno << 8) | regno;
550 ((u32 *)info->pseudo_palette)[regno] = value;
552 BT463_LOAD_ADDR(par, regno);
553 TGA_WRITE_REG(par, BT463_PALETTE << 2, TGA_RAMDAC_SETUP_REG);
554 TGA_WRITE_REG(par, red, TGA_RAMDAC_REG);
555 TGA_WRITE_REG(par, green, TGA_RAMDAC_REG);
556 TGA_WRITE_REG(par, blue, TGA_RAMDAC_REG);
564 * tgafb_blank - Optional function. Blanks the display.
565 * @blank_mode: the blank mode we want.
566 * @info: frame buffer structure that represents a single frame buffer
569 tgafb_blank(int blank, struct fb_info *info)
571 struct tga_par *par = (struct tga_par *) info->par;
572 u32 vhcr, vvcr, vvvr;
575 local_irq_save(flags);
577 vhcr = TGA_READ_REG(par, TGA_HORIZ_REG);
578 vvcr = TGA_READ_REG(par, TGA_VERT_REG);
579 vvvr = TGA_READ_REG(par, TGA_VALID_REG);
580 vvvr &= ~(TGA_VALID_VIDEO | TGA_VALID_BLANK);
583 case FB_BLANK_UNBLANK: /* Unblanking */
584 if (par->vesa_blanked) {
585 TGA_WRITE_REG(par, vhcr & 0xbfffffff, TGA_HORIZ_REG);
586 TGA_WRITE_REG(par, vvcr & 0xbfffffff, TGA_VERT_REG);
587 par->vesa_blanked = 0;
589 TGA_WRITE_REG(par, vvvr | TGA_VALID_VIDEO, TGA_VALID_REG);
592 case FB_BLANK_NORMAL: /* Normal blanking */
593 TGA_WRITE_REG(par, vvvr | TGA_VALID_VIDEO | TGA_VALID_BLANK,
597 case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
598 TGA_WRITE_REG(par, vvcr | 0x40000000, TGA_VERT_REG);
599 TGA_WRITE_REG(par, vvvr | TGA_VALID_BLANK, TGA_VALID_REG);
600 par->vesa_blanked = 1;
603 case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
604 TGA_WRITE_REG(par, vhcr | 0x40000000, TGA_HORIZ_REG);
605 TGA_WRITE_REG(par, vvvr | TGA_VALID_BLANK, TGA_VALID_REG);
606 par->vesa_blanked = 1;
609 case FB_BLANK_POWERDOWN: /* Poweroff */
610 TGA_WRITE_REG(par, vhcr | 0x40000000, TGA_HORIZ_REG);
611 TGA_WRITE_REG(par, vvcr | 0x40000000, TGA_VERT_REG);
612 TGA_WRITE_REG(par, vvvr | TGA_VALID_BLANK, TGA_VALID_REG);
613 par->vesa_blanked = 1;
617 local_irq_restore(flags);
627 tgafb_mono_imageblit(struct fb_info *info, const struct fb_image *image)
629 struct tga_par *par = (struct tga_par *) info->par;
630 u32 fgcolor, bgcolor, dx, dy, width, height, vxres, vyres, pixelmask;
631 unsigned long rincr, line_length, shift, pos, is8bpp;
633 const unsigned char *data;
634 void __iomem *regs_base;
635 void __iomem *fb_base;
637 is8bpp = info->var.bits_per_pixel == 8;
639 /* For copies that aren't pixel expansion, there's little we
640 can do better than the generic code. */
641 /* ??? There is a DMA write mode; I wonder if that could be
642 made to pull the data from the image buffer... */
643 if (image->depth > 1) {
644 cfb_imageblit(info, image);
650 width = image->width;
651 height = image->height;
652 vxres = info->var.xres_virtual;
653 vyres = info->var.yres_virtual;
654 line_length = info->fix.line_length;
655 rincr = (width + 7) / 8;
657 /* Crop the image to the screen. */
658 if (dx > vxres || dy > vyres)
660 if (dx + width > vxres)
662 if (dy + height > vyres)
665 regs_base = par->tga_regs_base;
666 fb_base = par->tga_fb_base;
668 /* Expand the color values to fill 32-bits. */
669 /* ??? Would be nice to notice colour changes elsewhere, so
670 that we can do this only when necessary. */
671 fgcolor = image->fg_color;
672 bgcolor = image->bg_color;
674 fgcolor |= fgcolor << 8;
675 fgcolor |= fgcolor << 16;
676 bgcolor |= bgcolor << 8;
677 bgcolor |= bgcolor << 16;
680 fgcolor = ((u32 *)info->pseudo_palette)[fgcolor];
682 bgcolor = ((u32 *)info->pseudo_palette)[bgcolor];
684 __raw_writel(fgcolor, regs_base + TGA_FOREGROUND_REG);
685 __raw_writel(bgcolor, regs_base + TGA_BACKGROUND_REG);
687 /* Acquire proper alignment; set up the PIXELMASK register
688 so that we only write the proper character cell. */
689 pos = dy * line_length;
696 shift = (pos & 7) >> 2;
700 data = (const unsigned char *) image->data;
702 /* Enable opaque stipple mode. */
704 ? TGA_MODE_SBM_8BPP | TGA_MODE_OPAQUE_STIPPLE
705 : TGA_MODE_SBM_24BPP | TGA_MODE_OPAQUE_STIPPLE),
706 regs_base + TGA_MODE_REG);
708 if (width + shift <= 32) {
709 unsigned long bwidth;
711 /* Handle common case of imaging a single character, in
712 a font less than 32 pixels wide. */
714 pixelmask = (1 << width) - 1;
716 __raw_writel(pixelmask, regs_base + TGA_PIXELMASK_REG);
719 bwidth = (width + 7) / 8;
721 for (i = 0; i < height; ++i) {
724 /* The image data is bit big endian; we need
726 for (j = 0; j < bwidth; ++j)
727 mask |= bitrev8(data[j]) << (j * 8);
729 __raw_writel(mask << shift, fb_base + pos);
735 __raw_writel(0xffffffff, regs_base + TGA_PIXELMASK_REG);
736 } else if (shift == 0) {
737 unsigned long pos0 = pos;
738 const unsigned char *data0 = data;
739 unsigned long bincr = (is8bpp ? 8 : 8*4);
740 unsigned long bwidth;
742 /* Handle another common case in which accel_putcs
743 generates a large bitmap, which happens to be aligned.
744 Allow the tail to be misaligned. This case is
745 interesting because we've not got to hold partial
746 bytes across the words being written. */
750 bwidth = (width / 8) & -4;
751 for (i = 0; i < height; ++i) {
752 for (j = 0; j < bwidth; j += 4) {
754 mask |= bitrev8(data[j+0]) << (0 * 8);
755 mask |= bitrev8(data[j+1]) << (1 * 8);
756 mask |= bitrev8(data[j+2]) << (2 * 8);
757 mask |= bitrev8(data[j+3]) << (3 * 8);
758 __raw_writel(mask, fb_base + pos + j*bincr);
765 pixelmask = (1ul << (width & 31)) - 1;
767 __raw_writel(pixelmask, regs_base + TGA_PIXELMASK_REG);
770 pos = pos0 + bwidth*bincr;
771 data = data0 + bwidth;
772 bwidth = ((width & 31) + 7) / 8;
774 for (i = 0; i < height; ++i) {
776 for (j = 0; j < bwidth; ++j)
777 mask |= bitrev8(data[j]) << (j * 8);
778 __raw_writel(mask, fb_base + pos);
783 __raw_writel(0xffffffff, regs_base + TGA_PIXELMASK_REG);
786 unsigned long pos0 = pos;
787 const unsigned char *data0 = data;
788 unsigned long bincr = (is8bpp ? 8 : 8*4);
789 unsigned long bwidth;
791 /* Finally, handle the generic case of misaligned start.
792 Here we split the write into 16-bit spans. This allows
793 us to use only one pixel mask, instead of four as would
794 be required by writing 24-bit spans. */
796 pixelmask = 0xffff << shift;
797 __raw_writel(pixelmask, regs_base + TGA_PIXELMASK_REG);
800 bwidth = (width / 8) & -2;
801 for (i = 0; i < height; ++i) {
802 for (j = 0; j < bwidth; j += 2) {
804 mask |= bitrev8(data[j+0]) << (0 * 8);
805 mask |= bitrev8(data[j+1]) << (1 * 8);
807 __raw_writel(mask, fb_base + pos + j*bincr);
814 pixelmask = ((1ul << (width & 15)) - 1) << shift;
816 __raw_writel(pixelmask, regs_base + TGA_PIXELMASK_REG);
819 pos = pos0 + bwidth*bincr;
820 data = data0 + bwidth;
821 bwidth = (width & 15) > 8;
823 for (i = 0; i < height; ++i) {
824 u32 mask = bitrev8(data[0]);
826 mask |= bitrev8(data[1]) << 8;
828 __raw_writel(mask, fb_base + pos);
834 __raw_writel(0xffffffff, regs_base + TGA_PIXELMASK_REG);
837 /* Disable opaque stipple mode. */
839 ? TGA_MODE_SBM_8BPP | TGA_MODE_SIMPLE
840 : TGA_MODE_SBM_24BPP | TGA_MODE_SIMPLE),
841 regs_base + TGA_MODE_REG);
845 tgafb_clut_imageblit(struct fb_info *info, const struct fb_image *image)
847 struct tga_par *par = (struct tga_par *) info->par;
848 u32 color, dx, dy, width, height, vxres, vyres;
849 u32 *palette = ((u32 *)info->pseudo_palette);
850 unsigned long pos, line_length, i, j;
851 const unsigned char *data;
852 void *regs_base, *fb_base;
856 width = image->width;
857 height = image->height;
858 vxres = info->var.xres_virtual;
859 vyres = info->var.yres_virtual;
860 line_length = info->fix.line_length;
862 /* Crop the image to the screen. */
863 if (dx > vxres || dy > vyres)
865 if (dx + width > vxres)
867 if (dy + height > vyres)
870 regs_base = par->tga_regs_base;
871 fb_base = par->tga_fb_base;
873 pos = dy * line_length + (dx * 4);
876 /* Now copy the image, color_expanding via the palette. */
877 for (i = 0; i < height; i++) {
878 for (j = 0; j < width; j++) {
879 color = palette[*data++];
880 __raw_writel(color, fb_base + pos + j*4);
887 * tgafb_imageblit - REQUIRED function. Can use generic routines if
888 * non acclerated hardware and packed pixel based.
889 * Copies a image from system memory to the screen.
891 * @info: frame buffer structure that represents a single frame buffer
892 * @image: structure defining the image.
895 tgafb_imageblit(struct fb_info *info, const struct fb_image *image)
897 unsigned int is8bpp = info->var.bits_per_pixel == 8;
899 /* If a mono image, regardless of FB depth, go do it. */
900 if (image->depth == 1) {
901 tgafb_mono_imageblit(info, image);
905 /* For copies that aren't pixel expansion, there's little we
906 can do better than the generic code. */
907 /* ??? There is a DMA write mode; I wonder if that could be
908 made to pull the data from the image buffer... */
909 if (image->depth == info->var.bits_per_pixel) {
910 cfb_imageblit(info, image);
914 /* If 24-plane FB and the image is 8-plane with CLUT, we can do it. */
915 if (!is8bpp && image->depth == 8) {
916 tgafb_clut_imageblit(info, image);
920 /* Silently return... */
924 * tgafb_fillrect - REQUIRED function. Can use generic routines if
925 * non acclerated hardware and packed pixel based.
926 * Draws a rectangle on the screen.
928 * @info: frame buffer structure that represents a single frame buffer
929 * @rect: structure defining the rectagle and operation.
932 tgafb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
934 struct tga_par *par = (struct tga_par *) info->par;
935 int is8bpp = info->var.bits_per_pixel == 8;
936 u32 dx, dy, width, height, vxres, vyres, color;
937 unsigned long pos, align, line_length, i, j;
938 void __iomem *regs_base;
939 void __iomem *fb_base;
944 height = rect->height;
945 vxres = info->var.xres_virtual;
946 vyres = info->var.yres_virtual;
947 line_length = info->fix.line_length;
948 regs_base = par->tga_regs_base;
949 fb_base = par->tga_fb_base;
951 /* Crop the rectangle to the screen. */
952 if (dx > vxres || dy > vyres || !width || !height)
954 if (dx + width > vxres)
956 if (dy + height > vyres)
959 pos = dy * line_length + dx * (is8bpp ? 1 : 4);
961 /* ??? We could implement ROP_XOR with opaque fill mode
962 and a RasterOp setting of GXxor, but as far as I can
963 tell, this mode is not actually used in the kernel.
964 Thus I am ignoring it for now. */
965 if (rect->rop != ROP_COPY) {
966 cfb_fillrect(info, rect);
970 /* Expand the color value to fill 8 pixels. */
974 color |= color << 16;
975 __raw_writel(color, regs_base + TGA_BLOCK_COLOR0_REG);
976 __raw_writel(color, regs_base + TGA_BLOCK_COLOR1_REG);
979 color = ((u32 *)info->pseudo_palette)[color];
980 __raw_writel(color, regs_base + TGA_BLOCK_COLOR0_REG);
981 __raw_writel(color, regs_base + TGA_BLOCK_COLOR1_REG);
982 __raw_writel(color, regs_base + TGA_BLOCK_COLOR2_REG);
983 __raw_writel(color, regs_base + TGA_BLOCK_COLOR3_REG);
984 __raw_writel(color, regs_base + TGA_BLOCK_COLOR4_REG);
985 __raw_writel(color, regs_base + TGA_BLOCK_COLOR5_REG);
986 __raw_writel(color, regs_base + TGA_BLOCK_COLOR6_REG);
987 __raw_writel(color, regs_base + TGA_BLOCK_COLOR7_REG);
990 /* The DATA register holds the fill mask for block fill mode.
991 Since we're not stippling, this is all ones. */
992 __raw_writel(0xffffffff, regs_base + TGA_DATA_REG);
994 /* Enable block fill mode. */
996 ? TGA_MODE_SBM_8BPP | TGA_MODE_BLOCK_FILL
997 : TGA_MODE_SBM_24BPP | TGA_MODE_BLOCK_FILL),
998 regs_base + TGA_MODE_REG);
1001 /* We can fill 2k pixels per operation. Notice blocks that fit
1002 the width of the screen so that we can take advantage of this
1003 and fill more than one line per write. */
1004 if (width == line_length)
1005 width *= height, height = 1;
1007 /* The write into the frame buffer must be aligned to 4 bytes,
1008 but we are allowed to encode the offset within the word in
1009 the data word written. */
1010 align = (pos & 3) << 16;
1013 if (width <= 2048) {
1016 data = (width - 1) | align;
1018 for (i = 0; i < height; ++i) {
1019 __raw_writel(data, fb_base + pos);
1023 unsigned long Bpp = (is8bpp ? 1 : 4);
1024 unsigned long nwidth = width & -2048;
1027 fdata = (2048 - 1) | align;
1028 ldata = ((width & 2047) - 1) | align;
1030 for (i = 0; i < height; ++i) {
1031 for (j = 0; j < nwidth; j += 2048)
1032 __raw_writel(fdata, fb_base + pos + j*Bpp);
1034 __raw_writel(ldata, fb_base + pos + j*Bpp);
1040 /* Disable block fill mode. */
1041 __raw_writel((is8bpp
1042 ? TGA_MODE_SBM_8BPP | TGA_MODE_SIMPLE
1043 : TGA_MODE_SBM_24BPP | TGA_MODE_SIMPLE),
1044 regs_base + TGA_MODE_REG);
1048 * tgafb_copyarea - REQUIRED function. Can use generic routines if
1049 * non acclerated hardware and packed pixel based.
1050 * Copies on area of the screen to another area.
1052 * @info: frame buffer structure that represents a single frame buffer
1053 * @area: structure defining the source and destination.
1056 /* Handle the special case of copying entire lines, e.g. during scrolling.
1057 We can avoid a lot of needless computation in this case. In the 8bpp
1058 case we need to use the COPY64 registers instead of mask writes into
1059 the frame buffer to achieve maximum performance. */
1062 copyarea_line_8bpp(struct fb_info *info, u32 dy, u32 sy,
1063 u32 height, u32 width)
1065 struct tga_par *par = (struct tga_par *) info->par;
1066 void __iomem *tga_regs = par->tga_regs_base;
1067 unsigned long dpos, spos, i, n64;
1069 /* Set up the MODE and PIXELSHIFT registers. */
1070 __raw_writel(TGA_MODE_SBM_8BPP | TGA_MODE_COPY, tga_regs+TGA_MODE_REG);
1071 __raw_writel(0, tga_regs+TGA_PIXELSHIFT_REG);
1074 n64 = (height * width) / 64;
1077 spos = (sy + height) * width;
1078 dpos = (dy + height) * width;
1080 for (i = 0; i < n64; ++i) {
1083 __raw_writel(spos, tga_regs+TGA_COPY64_SRC);
1085 __raw_writel(dpos, tga_regs+TGA_COPY64_DST);
1092 for (i = 0; i < n64; ++i) {
1093 __raw_writel(spos, tga_regs+TGA_COPY64_SRC);
1095 __raw_writel(dpos, tga_regs+TGA_COPY64_DST);
1102 /* Reset the MODE register to normal. */
1103 __raw_writel(TGA_MODE_SBM_8BPP|TGA_MODE_SIMPLE, tga_regs+TGA_MODE_REG);
1107 copyarea_line_32bpp(struct fb_info *info, u32 dy, u32 sy,
1108 u32 height, u32 width)
1110 struct tga_par *par = (struct tga_par *) info->par;
1111 void __iomem *tga_regs = par->tga_regs_base;
1112 void __iomem *tga_fb = par->tga_fb_base;
1115 unsigned long i, n16;
1117 /* Set up the MODE and PIXELSHIFT registers. */
1118 __raw_writel(TGA_MODE_SBM_24BPP | TGA_MODE_COPY, tga_regs+TGA_MODE_REG);
1119 __raw_writel(0, tga_regs+TGA_PIXELSHIFT_REG);
1122 n16 = (height * width) / 16;
1125 src = tga_fb + (sy + height) * width * 4;
1126 dst = tga_fb + (dy + height) * width * 4;
1128 for (i = 0; i < n16; ++i) {
1131 __raw_writel(0xffff, src);
1133 __raw_writel(0xffff, dst);
1137 src = tga_fb + sy * width * 4;
1138 dst = tga_fb + dy * width * 4;
1140 for (i = 0; i < n16; ++i) {
1141 __raw_writel(0xffff, src);
1143 __raw_writel(0xffff, dst);
1150 /* Reset the MODE register to normal. */
1151 __raw_writel(TGA_MODE_SBM_24BPP|TGA_MODE_SIMPLE, tga_regs+TGA_MODE_REG);
1154 /* The general case of forward copy in 8bpp mode. */
1156 copyarea_foreward_8bpp(struct fb_info *info, u32 dx, u32 dy, u32 sx, u32 sy,
1157 u32 height, u32 width, u32 line_length)
1159 struct tga_par *par = (struct tga_par *) info->par;
1160 unsigned long i, copied, left;
1161 unsigned long dpos, spos, dalign, salign, yincr;
1162 u32 smask_first, dmask_first, dmask_last;
1163 int pixel_shift, need_prime, need_second;
1164 unsigned long n64, n32, xincr_first;
1165 void __iomem *tga_regs;
1166 void __iomem *tga_fb;
1168 yincr = line_length;
1175 /* Compute the offsets and alignments in the frame buffer.
1176 More than anything else, these control how we do copies. */
1177 dpos = dy * line_length + dx;
1178 spos = sy * line_length + sx;
1184 /* Compute the value for the PIXELSHIFT register. This controls
1185 both non-co-aligned source and destination and copy direction. */
1186 if (dalign >= salign)
1187 pixel_shift = dalign - salign;
1189 pixel_shift = 8 - (salign - dalign);
1191 /* Figure out if we need an additional priming step for the
1192 residue register. */
1193 need_prime = (salign > dalign);
1197 /* Begin by copying the leading unaligned destination. Copy enough
1198 to make the next destination address 32-byte aligned. */
1199 copied = 32 - (dalign + (dpos & 31));
1202 xincr_first = (copied + 7) & -8;
1203 smask_first = dmask_first = (1ul << copied) - 1;
1204 smask_first <<= salign;
1205 dmask_first <<= dalign + need_prime*8;
1206 if (need_prime && copied > 24)
1208 left = width - copied;
1210 /* Care for small copies. */
1211 if (copied > width) {
1213 t = (1ul << width) - 1;
1214 t <<= dalign + need_prime*8;
1219 /* Attempt to use 64-byte copies. This is only possible if the
1220 source and destination are co-aligned at 64 bytes. */
1221 n64 = need_second = 0;
1222 if ((dpos & 63) == (spos & 63)
1223 && (height == 1 || line_length % 64 == 0)) {
1224 /* We may need a 32-byte copy to ensure 64 byte alignment. */
1225 need_second = (dpos + xincr_first) & 63;
1226 if ((need_second & 32) != need_second)
1227 printk(KERN_ERR "tgafb: need_second wrong\n");
1228 if (left >= need_second + 64) {
1229 left -= need_second;
1236 /* Copy trailing full 32-byte sections. This will be the main
1237 loop if the 64 byte loop can't be used. */
1241 /* Copy the trailing unaligned destination. */
1242 dmask_last = (1ul << left) - 1;
1244 tga_regs = par->tga_regs_base;
1245 tga_fb = par->tga_fb_base;
1247 /* Set up the MODE and PIXELSHIFT registers. */
1248 __raw_writel(TGA_MODE_SBM_8BPP|TGA_MODE_COPY, tga_regs+TGA_MODE_REG);
1249 __raw_writel(pixel_shift, tga_regs+TGA_PIXELSHIFT_REG);
1252 for (i = 0; i < height; ++i) {
1257 sfb = tga_fb + spos;
1258 dfb = tga_fb + dpos;
1260 __raw_writel(smask_first, sfb);
1262 __raw_writel(dmask_first, dfb);
1269 __raw_writel(0xffffffff, sfb);
1271 __raw_writel(0xffffffff, dfb);
1277 if (n64 && (((unsigned long)sfb | (unsigned long)dfb) & 63))
1279 "tgafb: misaligned copy64 (s:%p, d:%p)\n",
1282 for (j = 0; j < n64; ++j) {
1283 __raw_writel(sfb - tga_fb, tga_regs+TGA_COPY64_SRC);
1285 __raw_writel(dfb - tga_fb, tga_regs+TGA_COPY64_DST);
1291 for (j = 0; j < n32; ++j) {
1292 __raw_writel(0xffffffff, sfb);
1294 __raw_writel(0xffffffff, dfb);
1301 __raw_writel(0xffffffff, sfb);
1303 __raw_writel(dmask_last, dfb);
1311 /* Reset the MODE register to normal. */
1312 __raw_writel(TGA_MODE_SBM_8BPP|TGA_MODE_SIMPLE, tga_regs+TGA_MODE_REG);
1315 /* The (almost) general case of backward copy in 8bpp mode. */
1317 copyarea_backward_8bpp(struct fb_info *info, u32 dx, u32 dy, u32 sx, u32 sy,
1318 u32 height, u32 width, u32 line_length,
1319 const struct fb_copyarea *area)
1321 struct tga_par *par = (struct tga_par *) info->par;
1322 unsigned long i, left, yincr;
1323 unsigned long depos, sepos, dealign, sealign;
1324 u32 mask_first, mask_last;
1326 void __iomem *tga_regs;
1327 void __iomem *tga_fb;
1329 yincr = line_length;
1336 /* Compute the offsets and alignments in the frame buffer.
1337 More than anything else, these control how we do copies. */
1338 depos = dy * line_length + dx + width;
1339 sepos = sy * line_length + sx + width;
1340 dealign = depos & 7;
1341 sealign = sepos & 7;
1343 /* ??? The documentation appears to be incorrect (or very
1344 misleading) wrt how pixel shifting works in backward copy
1345 mode, i.e. when PIXELSHIFT is negative. I give up for now.
1346 Do handle the common case of co-aligned backward copies,
1347 but frob everything else back on generic code. */
1348 if (dealign != sealign) {
1349 cfb_copyarea(info, area);
1353 /* We begin the copy with the trailing pixels of the
1354 unaligned destination. */
1355 mask_first = (1ul << dealign) - 1;
1356 left = width - dealign;
1358 /* Care for small copies. */
1359 if (dealign > width) {
1360 mask_first ^= (1ul << (dealign - width)) - 1;
1364 /* Next copy full words at a time. */
1368 /* Finally copy the unaligned head of the span. */
1369 mask_last = -1 << (32 - left);
1371 tga_regs = par->tga_regs_base;
1372 tga_fb = par->tga_fb_base;
1374 /* Set up the MODE and PIXELSHIFT registers. */
1375 __raw_writel(TGA_MODE_SBM_8BPP|TGA_MODE_COPY, tga_regs+TGA_MODE_REG);
1376 __raw_writel(0, tga_regs+TGA_PIXELSHIFT_REG);
1379 for (i = 0; i < height; ++i) {
1384 sfb = tga_fb + sepos;
1385 dfb = tga_fb + depos;
1387 __raw_writel(mask_first, sfb);
1389 __raw_writel(mask_first, dfb);
1393 for (j = 0; j < n32; ++j) {
1396 __raw_writel(0xffffffff, sfb);
1398 __raw_writel(0xffffffff, dfb);
1405 __raw_writel(mask_last, sfb);
1407 __raw_writel(mask_last, dfb);
1415 /* Reset the MODE register to normal. */
1416 __raw_writel(TGA_MODE_SBM_8BPP|TGA_MODE_SIMPLE, tga_regs+TGA_MODE_REG);
1420 tgafb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
1422 unsigned long dx, dy, width, height, sx, sy, vxres, vyres;
1423 unsigned long line_length, bpp;
1427 width = area->width;
1428 height = area->height;
1431 vxres = info->var.xres_virtual;
1432 vyres = info->var.yres_virtual;
1433 line_length = info->fix.line_length;
1435 /* The top left corners must be in the virtual screen. */
1436 if (dx > vxres || sx > vxres || dy > vyres || sy > vyres)
1439 /* Clip the destination. */
1440 if (dx + width > vxres)
1442 if (dy + height > vyres)
1443 height = vyres - dy;
1445 /* The source must be completely inside the virtual screen. */
1446 if (sx + width > vxres || sy + height > vyres)
1449 bpp = info->var.bits_per_pixel;
1451 /* Detect copies of the entire line. */
1452 if (width * (bpp >> 3) == line_length) {
1454 copyarea_line_8bpp(info, dy, sy, height, width);
1456 copyarea_line_32bpp(info, dy, sy, height, width);
1459 /* ??? The documentation is unclear to me exactly how the pixelshift
1460 register works in 32bpp mode. Since I don't have hardware to test,
1461 give up for now and fall back on the generic routines. */
1463 cfb_copyarea(info, area);
1465 /* Detect overlapping source and destination that requires
1467 else if (dy == sy && dx > sx && dx < sx + width)
1468 copyarea_backward_8bpp(info, dx, dy, sx, sy, height,
1469 width, line_length, area);
1471 copyarea_foreward_8bpp(info, dx, dy, sx, sy, height,
1472 width, line_length);
1481 tgafb_init_fix(struct fb_info *info)
1483 struct tga_par *par = (struct tga_par *)info->par;
1484 int tga_bus_pci = TGA_BUS_PCI(par->dev);
1485 int tga_bus_tc = TGA_BUS_TC(par->dev);
1486 u8 tga_type = par->tga_type;
1487 const char *tga_type_name = NULL;
1490 case TGA_TYPE_8PLANE:
1492 tga_type_name = "Digital ZLXp-E1";
1494 tga_type_name = "Digital ZLX-E1";
1496 case TGA_TYPE_24PLANE:
1498 tga_type_name = "Digital ZLXp-E2";
1500 tga_type_name = "Digital ZLX-E2";
1502 case TGA_TYPE_24PLUSZ:
1504 tga_type_name = "Digital ZLXp-E3";
1506 tga_type_name = "Digital ZLX-E3";
1509 tga_type_name = "Unknown";
1513 strlcpy(info->fix.id, tga_type_name, sizeof(info->fix.id));
1515 info->fix.type = FB_TYPE_PACKED_PIXELS;
1516 info->fix.type_aux = 0;
1517 info->fix.visual = (tga_type == TGA_TYPE_8PLANE
1518 ? FB_VISUAL_PSEUDOCOLOR
1519 : FB_VISUAL_DIRECTCOLOR);
1521 info->fix.line_length = par->xres * (par->bits_per_pixel >> 3);
1522 info->fix.smem_start = (size_t) par->tga_fb_base;
1523 info->fix.smem_len = info->fix.line_length * par->yres;
1524 info->fix.mmio_start = (size_t) par->tga_regs_base;
1525 info->fix.mmio_len = 512;
1527 info->fix.xpanstep = 0;
1528 info->fix.ypanstep = 0;
1529 info->fix.ywrapstep = 0;
1531 info->fix.accel = FB_ACCEL_DEC_TGA;
1534 * These are needed by fb_set_logo_truepalette(), so we
1535 * set them here for 24-plane cards.
1537 if (tga_type != TGA_TYPE_8PLANE) {
1538 info->var.red.length = 8;
1539 info->var.green.length = 8;
1540 info->var.blue.length = 8;
1541 info->var.red.offset = 16;
1542 info->var.green.offset = 8;
1543 info->var.blue.offset = 0;
1547 static int tgafb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
1549 /* We just use this to catch switches out of graphics mode. */
1550 tgafb_set_par(info); /* A bit of overkill for BASE_ADDR reset. */
1554 static int __devinit
1555 tgafb_register(struct device *dev)
1557 static const struct fb_videomode modedb_tc = {
1558 /* 1280x1024 @ 72 Hz, 76.8 kHz hsync */
1559 "1280x1024@72", 0, 1280, 1024, 7645, 224, 28, 33, 3, 160, 3,
1560 FB_SYNC_ON_GREEN, FB_VMODE_NONINTERLACED
1563 static unsigned int const fb_offset_presets[4] = {
1564 TGA_8PLANE_FB_OFFSET,
1565 TGA_24PLANE_FB_OFFSET,
1567 TGA_24PLUSZ_FB_OFFSET
1570 const struct fb_videomode *modedb_tga = NULL;
1571 resource_size_t bar0_start = 0, bar0_len = 0;
1572 const char *mode_option_tga = NULL;
1573 int tga_bus_pci = TGA_BUS_PCI(dev);
1574 int tga_bus_tc = TGA_BUS_TC(dev);
1575 unsigned int modedbsize_tga = 0;
1576 void __iomem *mem_base;
1577 struct fb_info *info;
1578 struct tga_par *par;
1582 /* Enable device in PCI config. */
1583 if (tga_bus_pci && pci_enable_device(to_pci_dev(dev))) {
1584 printk(KERN_ERR "tgafb: Cannot enable PCI device\n");
1588 /* Allocate the fb and par structures. */
1589 info = framebuffer_alloc(sizeof(struct tga_par), dev);
1591 printk(KERN_ERR "tgafb: Cannot allocate memory\n");
1596 dev_set_drvdata(dev, info);
1598 /* Request the mem regions. */
1601 bar0_start = pci_resource_start(to_pci_dev(dev), 0);
1602 bar0_len = pci_resource_len(to_pci_dev(dev), 0);
1605 bar0_start = to_tc_dev(dev)->resource.start;
1606 bar0_len = to_tc_dev(dev)->resource.end - bar0_start + 1;
1608 if (!request_mem_region (bar0_start, bar0_len, "tgafb")) {
1609 printk(KERN_ERR "tgafb: cannot reserve FB region\n");
1613 /* Map the framebuffer. */
1614 mem_base = ioremap_nocache(bar0_start, bar0_len);
1616 printk(KERN_ERR "tgafb: Cannot map MMIO\n");
1620 /* Grab info about the card. */
1621 tga_type = (readl(mem_base) >> 12) & 0x0f;
1623 par->tga_mem_base = mem_base;
1624 par->tga_fb_base = mem_base + fb_offset_presets[tga_type];
1625 par->tga_regs_base = mem_base + TGA_REGS_OFFSET;
1626 par->tga_type = tga_type;
1628 par->tga_chip_rev = (to_pci_dev(dev))->revision;
1630 par->tga_chip_rev = TGA_READ_REG(par, TGA_START_REG) & 0xff;
1632 /* Setup framebuffer. */
1633 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
1634 FBINFO_HWACCEL_IMAGEBLIT | FBINFO_HWACCEL_FILLRECT;
1635 info->fbops = &tgafb_ops;
1636 info->screen_base = par->tga_fb_base;
1637 info->pseudo_palette = par->palette;
1639 /* This should give a reasonable default video mode. */
1641 mode_option_tga = mode_option_pci;
1644 mode_option_tga = mode_option_tc;
1645 modedb_tga = &modedb_tc;
1648 ret = fb_find_mode(&info->var, info,
1649 mode_option ? mode_option : mode_option_tga,
1650 modedb_tga, modedbsize_tga, NULL,
1651 tga_type == TGA_TYPE_8PLANE ? 8 : 32);
1652 if (ret == 0 || ret == 4) {
1653 printk(KERN_ERR "tgafb: Could not find valid video mode\n");
1658 if (fb_alloc_cmap(&info->cmap, 256, 0)) {
1659 printk(KERN_ERR "tgafb: Could not allocate color map\n");
1664 tgafb_set_par(info);
1665 tgafb_init_fix(info);
1667 if (register_framebuffer(info) < 0) {
1668 printk(KERN_ERR "tgafb: Could not register framebuffer\n");
1674 pr_info("tgafb: DC21030 [TGA] detected, rev=0x%02x\n",
1676 pr_info("tgafb: at PCI bus %d, device %d, function %d\n",
1677 to_pci_dev(dev)->bus->number,
1678 PCI_SLOT(to_pci_dev(dev)->devfn),
1679 PCI_FUNC(to_pci_dev(dev)->devfn));
1682 pr_info("tgafb: SFB+ detected, rev=0x%02x\n",
1684 pr_info("fb%d: %s frame buffer device at 0x%lx\n",
1685 info->node, info->fix.id, (long)bar0_start);
1692 release_mem_region(bar0_start, bar0_len);
1694 framebuffer_release(info);
1698 static void __devexit
1699 tgafb_unregister(struct device *dev)
1701 resource_size_t bar0_start = 0, bar0_len = 0;
1702 int tga_bus_pci = TGA_BUS_PCI(dev);
1703 int tga_bus_tc = TGA_BUS_TC(dev);
1704 struct fb_info *info = NULL;
1705 struct tga_par *par;
1707 info = dev_get_drvdata(dev);
1712 unregister_framebuffer(info);
1713 fb_dealloc_cmap(&info->cmap);
1714 iounmap(par->tga_mem_base);
1716 bar0_start = pci_resource_start(to_pci_dev(dev), 0);
1717 bar0_len = pci_resource_len(to_pci_dev(dev), 0);
1720 bar0_start = to_tc_dev(dev)->resource.start;
1721 bar0_len = to_tc_dev(dev)->resource.end - bar0_start + 1;
1723 release_mem_region(bar0_start, bar0_len);
1724 framebuffer_release(info);
1727 static void __devexit
1730 tc_unregister_driver(&tgafb_tc_driver);
1731 pci_unregister_driver(&tgafb_pci_driver);
1735 static int __devinit
1736 tgafb_setup(char *arg)
1741 while ((this_opt = strsep(&arg, ","))) {
1744 if (!strncmp(this_opt, "mode:", 5))
1745 mode_option = this_opt+5;
1748 "tgafb: unknown parameter %s\n",
1755 #endif /* !MODULE */
1757 static int __devinit
1762 char *option = NULL;
1764 if (fb_get_options("tgafb", &option))
1766 tgafb_setup(option);
1768 status = pci_register_driver(&tgafb_pci_driver);
1770 status = tc_register_driver(&tgafb_tc_driver);
1778 module_init(tgafb_init);
1779 module_exit(tgafb_exit);
1781 MODULE_DESCRIPTION("Framebuffer driver for TGA/SFB+ chipset");
1782 MODULE_LICENSE("GPL");