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authorTomi Valkeinen <tomi.valkeinen@ti.com>2014-02-13 08:31:38 -0500
committerTomi Valkeinen <tomi.valkeinen@ti.com>2014-04-17 01:10:19 -0400
commitf7018c21350204c4cf628462f229d44d03545254 (patch)
tree408787177164cf51cc06f7aabdb04fcff8d2b6aa /drivers/video/hgafb.c
parentc26ef3eb3c11274bad1b64498d0a134f85755250 (diff)
video: move fbdev to drivers/video/fbdev
The drivers/video directory is a mess. It contains generic video related files, directories for backlight, console, linux logo, lots of fbdev device drivers, fbdev framework files. Make some order into the chaos by creating drivers/video/fbdev directory, and move all fbdev related files there. No functionality is changed, although I guess it is possible that some subtle Makefile build order related issue could be created by this patch. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Rob Clark <robdclark@gmail.com> Acked-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/video/hgafb.c')
-rw-r--r--drivers/video/hgafb.c667
1 files changed, 0 insertions, 667 deletions
diff --git a/drivers/video/hgafb.c b/drivers/video/hgafb.c
deleted file mode 100644
index 5ff9fe2116a4..000000000000
--- a/drivers/video/hgafb.c
+++ /dev/null
@@ -1,667 +0,0 @@
1/*
2 * linux/drivers/video/hgafb.c -- Hercules graphics adaptor frame buffer device
3 *
4 * Created 25 Nov 1999 by Ferenc Bakonyi (fero@drama.obuda.kando.hu)
5 * Based on skeletonfb.c by Geert Uytterhoeven and
6 * mdacon.c by Andrew Apted
7 *
8 * History:
9 *
10 * - Revision 0.1.8 (23 Oct 2002): Ported to new framebuffer api.
11 *
12 * - Revision 0.1.7 (23 Jan 2001): fix crash resulting from MDA only cards
13 * being detected as Hercules. (Paul G.)
14 * - Revision 0.1.6 (17 Aug 2000): new style structs
15 * documentation
16 * - Revision 0.1.5 (13 Mar 2000): spinlocks instead of saveflags();cli();etc
17 * minor fixes
18 * - Revision 0.1.4 (24 Jan 2000): fixed a bug in hga_card_detect() for
19 * HGA-only systems
20 * - Revision 0.1.3 (22 Jan 2000): modified for the new fb_info structure
21 * screen is cleared after rmmod
22 * virtual resolutions
23 * module parameter 'nologo={0|1}'
24 * the most important: boot logo :)
25 * - Revision 0.1.0 (6 Dec 1999): faster scrolling and minor fixes
26 * - First release (25 Nov 1999)
27 *
28 * This file is subject to the terms and conditions of the GNU General Public
29 * License. See the file COPYING in the main directory of this archive
30 * for more details.
31 */
32
33#include <linux/module.h>
34#include <linux/kernel.h>
35#include <linux/errno.h>
36#include <linux/spinlock.h>
37#include <linux/string.h>
38#include <linux/mm.h>
39#include <linux/delay.h>
40#include <linux/fb.h>
41#include <linux/init.h>
42#include <linux/ioport.h>
43#include <linux/platform_device.h>
44#include <asm/io.h>
45#include <asm/vga.h>
46
47#if 0
48#define DPRINTK(args...) printk(KERN_DEBUG __FILE__": " ##args)
49#else
50#define DPRINTK(args...)
51#endif
52
53#if 0
54#define CHKINFO(ret) if (info != &fb_info) { printk(KERN_DEBUG __FILE__": This should never happen, line:%d \n", __LINE__); return ret; }
55#else
56#define CHKINFO(ret)
57#endif
58
59/* Description of the hardware layout */
60
61static void __iomem *hga_vram; /* Base of video memory */
62static unsigned long hga_vram_len; /* Size of video memory */
63
64#define HGA_ROWADDR(row) ((row%4)*8192 + (row>>2)*90)
65#define HGA_TXT 0
66#define HGA_GFX 1
67
68static inline u8 __iomem * rowaddr(struct fb_info *info, u_int row)
69{
70 return info->screen_base + HGA_ROWADDR(row);
71}
72
73static int hga_mode = -1; /* 0 = txt, 1 = gfx mode */
74
75static enum { TYPE_HERC, TYPE_HERCPLUS, TYPE_HERCCOLOR } hga_type;
76static char *hga_type_name;
77
78#define HGA_INDEX_PORT 0x3b4 /* Register select port */
79#define HGA_VALUE_PORT 0x3b5 /* Register value port */
80#define HGA_MODE_PORT 0x3b8 /* Mode control port */
81#define HGA_STATUS_PORT 0x3ba /* Status and Config port */
82#define HGA_GFX_PORT 0x3bf /* Graphics control port */
83
84/* HGA register values */
85
86#define HGA_CURSOR_BLINKING 0x00
87#define HGA_CURSOR_OFF 0x20
88#define HGA_CURSOR_SLOWBLINK 0x60
89
90#define HGA_MODE_GRAPHICS 0x02
91#define HGA_MODE_VIDEO_EN 0x08
92#define HGA_MODE_BLINK_EN 0x20
93#define HGA_MODE_GFX_PAGE1 0x80
94
95#define HGA_STATUS_HSYNC 0x01
96#define HGA_STATUS_VSYNC 0x80
97#define HGA_STATUS_VIDEO 0x08
98
99#define HGA_CONFIG_COL132 0x08
100#define HGA_GFX_MODE_EN 0x01
101#define HGA_GFX_PAGE_EN 0x02
102
103/* Global locks */
104
105static DEFINE_SPINLOCK(hga_reg_lock);
106
107/* Framebuffer driver structures */
108
109static struct fb_var_screeninfo hga_default_var = {
110 .xres = 720,
111 .yres = 348,
112 .xres_virtual = 720,
113 .yres_virtual = 348,
114 .bits_per_pixel = 1,
115 .red = {0, 1, 0},
116 .green = {0, 1, 0},
117 .blue = {0, 1, 0},
118 .transp = {0, 0, 0},
119 .height = -1,
120 .width = -1,
121};
122
123static struct fb_fix_screeninfo hga_fix = {
124 .id = "HGA",
125 .type = FB_TYPE_PACKED_PIXELS, /* (not sure) */
126 .visual = FB_VISUAL_MONO10,
127 .xpanstep = 8,
128 .ypanstep = 8,
129 .line_length = 90,
130 .accel = FB_ACCEL_NONE
131};
132
133/* Don't assume that tty1 will be the initial current console. */
134static int release_io_port = 0;
135static int release_io_ports = 0;
136static bool nologo = 0;
137
138/* -------------------------------------------------------------------------
139 *
140 * Low level hardware functions
141 *
142 * ------------------------------------------------------------------------- */
143
144static void write_hga_b(unsigned int val, unsigned char reg)
145{
146 outb_p(reg, HGA_INDEX_PORT);
147 outb_p(val, HGA_VALUE_PORT);
148}
149
150static void write_hga_w(unsigned int val, unsigned char reg)
151{
152 outb_p(reg, HGA_INDEX_PORT); outb_p(val >> 8, HGA_VALUE_PORT);
153 outb_p(reg+1, HGA_INDEX_PORT); outb_p(val & 0xff, HGA_VALUE_PORT);
154}
155
156static int test_hga_b(unsigned char val, unsigned char reg)
157{
158 outb_p(reg, HGA_INDEX_PORT);
159 outb (val, HGA_VALUE_PORT);
160 udelay(20); val = (inb_p(HGA_VALUE_PORT) == val);
161 return val;
162}
163
164static void hga_clear_screen(void)
165{
166 unsigned char fillchar = 0xbf; /* magic */
167 unsigned long flags;
168
169 spin_lock_irqsave(&hga_reg_lock, flags);
170 if (hga_mode == HGA_TXT)
171 fillchar = ' ';
172 else if (hga_mode == HGA_GFX)
173 fillchar = 0x00;
174 spin_unlock_irqrestore(&hga_reg_lock, flags);
175 if (fillchar != 0xbf)
176 memset_io(hga_vram, fillchar, hga_vram_len);
177}
178
179static void hga_txt_mode(void)
180{
181 unsigned long flags;
182
183 spin_lock_irqsave(&hga_reg_lock, flags);
184 outb_p(HGA_MODE_VIDEO_EN | HGA_MODE_BLINK_EN, HGA_MODE_PORT);
185 outb_p(0x00, HGA_GFX_PORT);
186 outb_p(0x00, HGA_STATUS_PORT);
187
188 write_hga_b(0x61, 0x00); /* horizontal total */
189 write_hga_b(0x50, 0x01); /* horizontal displayed */
190 write_hga_b(0x52, 0x02); /* horizontal sync pos */
191 write_hga_b(0x0f, 0x03); /* horizontal sync width */
192
193 write_hga_b(0x19, 0x04); /* vertical total */
194 write_hga_b(0x06, 0x05); /* vertical total adjust */
195 write_hga_b(0x19, 0x06); /* vertical displayed */
196 write_hga_b(0x19, 0x07); /* vertical sync pos */
197
198 write_hga_b(0x02, 0x08); /* interlace mode */
199 write_hga_b(0x0d, 0x09); /* maximum scanline */
200 write_hga_b(0x0c, 0x0a); /* cursor start */
201 write_hga_b(0x0d, 0x0b); /* cursor end */
202
203 write_hga_w(0x0000, 0x0c); /* start address */
204 write_hga_w(0x0000, 0x0e); /* cursor location */
205
206 hga_mode = HGA_TXT;
207 spin_unlock_irqrestore(&hga_reg_lock, flags);
208}
209
210static void hga_gfx_mode(void)
211{
212 unsigned long flags;
213
214 spin_lock_irqsave(&hga_reg_lock, flags);
215 outb_p(0x00, HGA_STATUS_PORT);
216 outb_p(HGA_GFX_MODE_EN, HGA_GFX_PORT);
217 outb_p(HGA_MODE_VIDEO_EN | HGA_MODE_GRAPHICS, HGA_MODE_PORT);
218
219 write_hga_b(0x35, 0x00); /* horizontal total */
220 write_hga_b(0x2d, 0x01); /* horizontal displayed */
221 write_hga_b(0x2e, 0x02); /* horizontal sync pos */
222 write_hga_b(0x07, 0x03); /* horizontal sync width */
223
224 write_hga_b(0x5b, 0x04); /* vertical total */
225 write_hga_b(0x02, 0x05); /* vertical total adjust */
226 write_hga_b(0x57, 0x06); /* vertical displayed */
227 write_hga_b(0x57, 0x07); /* vertical sync pos */
228
229 write_hga_b(0x02, 0x08); /* interlace mode */
230 write_hga_b(0x03, 0x09); /* maximum scanline */
231 write_hga_b(0x00, 0x0a); /* cursor start */
232 write_hga_b(0x00, 0x0b); /* cursor end */
233
234 write_hga_w(0x0000, 0x0c); /* start address */
235 write_hga_w(0x0000, 0x0e); /* cursor location */
236
237 hga_mode = HGA_GFX;
238 spin_unlock_irqrestore(&hga_reg_lock, flags);
239}
240
241static void hga_show_logo(struct fb_info *info)
242{
243/*
244 void __iomem *dest = hga_vram;
245 char *logo = linux_logo_bw;
246 int x, y;
247
248 for (y = 134; y < 134 + 80 ; y++) * this needs some cleanup *
249 for (x = 0; x < 10 ; x++)
250 writeb(~*(logo++),(dest + HGA_ROWADDR(y) + x + 40));
251*/
252}
253
254static void hga_pan(unsigned int xoffset, unsigned int yoffset)
255{
256 unsigned int base;
257 unsigned long flags;
258
259 base = (yoffset / 8) * 90 + xoffset;
260 spin_lock_irqsave(&hga_reg_lock, flags);
261 write_hga_w(base, 0x0c); /* start address */
262 spin_unlock_irqrestore(&hga_reg_lock, flags);
263 DPRINTK("hga_pan: base:%d\n", base);
264}
265
266static void hga_blank(int blank_mode)
267{
268 unsigned long flags;
269
270 spin_lock_irqsave(&hga_reg_lock, flags);
271 if (blank_mode) {
272 outb_p(0x00, HGA_MODE_PORT); /* disable video */
273 } else {
274 outb_p(HGA_MODE_VIDEO_EN | HGA_MODE_GRAPHICS, HGA_MODE_PORT);
275 }
276 spin_unlock_irqrestore(&hga_reg_lock, flags);
277}
278
279static int hga_card_detect(void)
280{
281 int count = 0;
282 void __iomem *p, *q;
283 unsigned short p_save, q_save;
284
285 hga_vram_len = 0x08000;
286
287 hga_vram = ioremap(0xb0000, hga_vram_len);
288
289 if (request_region(0x3b0, 12, "hgafb"))
290 release_io_ports = 1;
291 if (request_region(0x3bf, 1, "hgafb"))
292 release_io_port = 1;
293
294 /* do a memory check */
295
296 p = hga_vram;
297 q = hga_vram + 0x01000;
298
299 p_save = readw(p); q_save = readw(q);
300
301 writew(0xaa55, p); if (readw(p) == 0xaa55) count++;
302 writew(0x55aa, p); if (readw(p) == 0x55aa) count++;
303 writew(p_save, p);
304
305 if (count != 2)
306 goto error;
307
308 /* Ok, there is definitely a card registering at the correct
309 * memory location, so now we do an I/O port test.
310 */
311
312 if (!test_hga_b(0x66, 0x0f)) /* cursor low register */
313 goto error;
314
315 if (!test_hga_b(0x99, 0x0f)) /* cursor low register */
316 goto error;
317
318 /* See if the card is a Hercules, by checking whether the vsync
319 * bit of the status register is changing. This test lasts for
320 * approximately 1/10th of a second.
321 */
322
323 p_save = q_save = inb_p(HGA_STATUS_PORT) & HGA_STATUS_VSYNC;
324
325 for (count=0; count < 50000 && p_save == q_save; count++) {
326 q_save = inb(HGA_STATUS_PORT) & HGA_STATUS_VSYNC;
327 udelay(2);
328 }
329
330 if (p_save == q_save)
331 goto error;
332
333 switch (inb_p(HGA_STATUS_PORT) & 0x70) {
334 case 0x10:
335 hga_type = TYPE_HERCPLUS;
336 hga_type_name = "HerculesPlus";
337 break;
338 case 0x50:
339 hga_type = TYPE_HERCCOLOR;
340 hga_type_name = "HerculesColor";
341 break;
342 default:
343 hga_type = TYPE_HERC;
344 hga_type_name = "Hercules";
345 break;
346 }
347 return 1;
348error:
349 if (release_io_ports)
350 release_region(0x3b0, 12);
351 if (release_io_port)
352 release_region(0x3bf, 1);
353 return 0;
354}
355
356/**
357 * hgafb_open - open the framebuffer device
358 * @info:pointer to fb_info object containing info for current hga board
359 * @int:open by console system or userland.
360 */
361
362static int hgafb_open(struct fb_info *info, int init)
363{
364 hga_gfx_mode();
365 hga_clear_screen();
366 if (!nologo) hga_show_logo(info);
367 return 0;
368}
369
370/**
371 * hgafb_open - open the framebuffer device
372 * @info:pointer to fb_info object containing info for current hga board
373 * @int:open by console system or userland.
374 */
375
376static int hgafb_release(struct fb_info *info, int init)
377{
378 hga_txt_mode();
379 hga_clear_screen();
380 return 0;
381}
382
383/**
384 * hgafb_setcolreg - set color registers
385 * @regno:register index to set
386 * @red:red value, unused
387 * @green:green value, unused
388 * @blue:blue value, unused
389 * @transp:transparency value, unused
390 * @info:unused
391 *
392 * This callback function is used to set the color registers of a HGA
393 * board. Since we have only two fixed colors only @regno is checked.
394 * A zero is returned on success and 1 for failure.
395 */
396
397static int hgafb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
398 u_int transp, struct fb_info *info)
399{
400 if (regno > 1)
401 return 1;
402 return 0;
403}
404
405/**
406 * hga_pan_display - pan or wrap the display
407 * @var:contains new xoffset, yoffset and vmode values
408 * @info:pointer to fb_info object containing info for current hga board
409 *
410 * This function looks only at xoffset, yoffset and the %FB_VMODE_YWRAP
411 * flag in @var. If input parameters are correct it calls hga_pan() to
412 * program the hardware. @info->var is updated to the new values.
413 * A zero is returned on success and %-EINVAL for failure.
414 */
415
416static int hgafb_pan_display(struct fb_var_screeninfo *var,
417 struct fb_info *info)
418{
419 if (var->vmode & FB_VMODE_YWRAP) {
420 if (var->yoffset < 0 ||
421 var->yoffset >= info->var.yres_virtual ||
422 var->xoffset)
423 return -EINVAL;
424 } else {
425 if (var->xoffset + info->var.xres > info->var.xres_virtual
426 || var->yoffset + info->var.yres > info->var.yres_virtual
427 || var->yoffset % 8)
428 return -EINVAL;
429 }
430
431 hga_pan(var->xoffset, var->yoffset);
432 return 0;
433}
434
435/**
436 * hgafb_blank - (un)blank the screen
437 * @blank_mode:blanking method to use
438 * @info:unused
439 *
440 * Blank the screen if blank_mode != 0, else unblank.
441 * Implements VESA suspend and powerdown modes on hardware that supports
442 * disabling hsync/vsync:
443 * @blank_mode == 2 means suspend vsync,
444 * @blank_mode == 3 means suspend hsync,
445 * @blank_mode == 4 means powerdown.
446 */
447
448static int hgafb_blank(int blank_mode, struct fb_info *info)
449{
450 hga_blank(blank_mode);
451 return 0;
452}
453
454/*
455 * Accel functions
456 */
457static void hgafb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
458{
459 u_int rows, y;
460 u8 __iomem *dest;
461
462 y = rect->dy;
463
464 for (rows = rect->height; rows--; y++) {
465 dest = rowaddr(info, y) + (rect->dx >> 3);
466 switch (rect->rop) {
467 case ROP_COPY:
468 memset_io(dest, rect->color, (rect->width >> 3));
469 break;
470 case ROP_XOR:
471 fb_writeb(~(fb_readb(dest)), dest);
472 break;
473 }
474 }
475}
476
477static void hgafb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
478{
479 u_int rows, y1, y2;
480 u8 __iomem *src;
481 u8 __iomem *dest;
482
483 if (area->dy <= area->sy) {
484 y1 = area->sy;
485 y2 = area->dy;
486
487 for (rows = area->height; rows--; ) {
488 src = rowaddr(info, y1) + (area->sx >> 3);
489 dest = rowaddr(info, y2) + (area->dx >> 3);
490 memmove(dest, src, (area->width >> 3));
491 y1++;
492 y2++;
493 }
494 } else {
495 y1 = area->sy + area->height - 1;
496 y2 = area->dy + area->height - 1;
497
498 for (rows = area->height; rows--;) {
499 src = rowaddr(info, y1) + (area->sx >> 3);
500 dest = rowaddr(info, y2) + (area->dx >> 3);
501 memmove(dest, src, (area->width >> 3));
502 y1--;
503 y2--;
504 }
505 }
506}
507
508static void hgafb_imageblit(struct fb_info *info, const struct fb_image *image)
509{
510 u8 __iomem *dest;
511 u8 *cdat = (u8 *) image->data;
512 u_int rows, y = image->dy;
513 u_int x;
514 u8 d;
515
516 for (rows = image->height; rows--; y++) {
517 for (x = 0; x < image->width; x+= 8) {
518 d = *cdat++;
519 dest = rowaddr(info, y) + ((image->dx + x)>> 3);
520 fb_writeb(d, dest);
521 }
522 }
523}
524
525static struct fb_ops hgafb_ops = {
526 .owner = THIS_MODULE,
527 .fb_open = hgafb_open,
528 .fb_release = hgafb_release,
529 .fb_setcolreg = hgafb_setcolreg,
530 .fb_pan_display = hgafb_pan_display,
531 .fb_blank = hgafb_blank,
532 .fb_fillrect = hgafb_fillrect,
533 .fb_copyarea = hgafb_copyarea,
534 .fb_imageblit = hgafb_imageblit,
535};
536
537/* ------------------------------------------------------------------------- *
538 *
539 * Functions in fb_info
540 *
541 * ------------------------------------------------------------------------- */
542
543/* ------------------------------------------------------------------------- */
544
545 /*
546 * Initialization
547 */
548
549static int hgafb_probe(struct platform_device *pdev)
550{
551 struct fb_info *info;
552
553 if (! hga_card_detect()) {
554 printk(KERN_INFO "hgafb: HGA card not detected.\n");
555 if (hga_vram)
556 iounmap(hga_vram);
557 return -EINVAL;
558 }
559
560 printk(KERN_INFO "hgafb: %s with %ldK of memory detected.\n",
561 hga_type_name, hga_vram_len/1024);
562
563 info = framebuffer_alloc(0, &pdev->dev);
564 if (!info) {
565 iounmap(hga_vram);
566 return -ENOMEM;
567 }
568
569 hga_fix.smem_start = (unsigned long)hga_vram;
570 hga_fix.smem_len = hga_vram_len;
571
572 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
573 info->var = hga_default_var;
574 info->fix = hga_fix;
575 info->monspecs.hfmin = 0;
576 info->monspecs.hfmax = 0;
577 info->monspecs.vfmin = 10000;
578 info->monspecs.vfmax = 10000;
579 info->monspecs.dpms = 0;
580 info->fbops = &hgafb_ops;
581 info->screen_base = hga_vram;
582
583 if (register_framebuffer(info) < 0) {
584 framebuffer_release(info);
585 iounmap(hga_vram);
586 return -EINVAL;
587 }
588
589 fb_info(info, "%s frame buffer device\n", info->fix.id);
590 platform_set_drvdata(pdev, info);
591 return 0;
592}
593
594static int hgafb_remove(struct platform_device *pdev)
595{
596 struct fb_info *info = platform_get_drvdata(pdev);
597
598 hga_txt_mode();
599 hga_clear_screen();
600
601 if (info) {
602 unregister_framebuffer(info);
603 framebuffer_release(info);
604 }
605
606 iounmap(hga_vram);
607
608 if (release_io_ports)
609 release_region(0x3b0, 12);
610
611 if (release_io_port)
612 release_region(0x3bf, 1);
613
614 return 0;
615}
616
617static struct platform_driver hgafb_driver = {
618 .probe = hgafb_probe,
619 .remove = hgafb_remove,
620 .driver = {
621 .name = "hgafb",
622 },
623};
624
625static struct platform_device *hgafb_device;
626
627static int __init hgafb_init(void)
628{
629 int ret;
630
631 if (fb_get_options("hgafb", NULL))
632 return -ENODEV;
633
634 ret = platform_driver_register(&hgafb_driver);
635
636 if (!ret) {
637 hgafb_device = platform_device_register_simple("hgafb", 0, NULL, 0);
638
639 if (IS_ERR(hgafb_device)) {
640 platform_driver_unregister(&hgafb_driver);
641 ret = PTR_ERR(hgafb_device);
642 }
643 }
644
645 return ret;
646}
647
648static void __exit hgafb_exit(void)
649{
650 platform_device_unregister(hgafb_device);
651 platform_driver_unregister(&hgafb_driver);
652}
653
654/* -------------------------------------------------------------------------
655 *
656 * Modularization
657 *
658 * ------------------------------------------------------------------------- */
659
660MODULE_AUTHOR("Ferenc Bakonyi (fero@drama.obuda.kando.hu)");
661MODULE_DESCRIPTION("FBDev driver for Hercules Graphics Adaptor");
662MODULE_LICENSE("GPL");
663
664module_param(nologo, bool, 0);
665MODULE_PARM_DESC(nologo, "Disables startup logo if != 0 (default=0)");
666module_init(hgafb_init);
667module_exit(hgafb_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-19 09:28:57 -0500