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path: root/drivers/video/console/fbcon_cw.c
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Diffstat (limited to 'drivers/video/console/fbcon_cw.c')
-rw-r--r--drivers/video/console/fbcon_cw.c412
1 files changed, 412 insertions, 0 deletions
diff --git a/drivers/video/console/fbcon_cw.c b/drivers/video/console/fbcon_cw.c
new file mode 100644
index 000000000000..6c6f3b6dd175
--- /dev/null
+++ b/drivers/video/console/fbcon_cw.c
@@ -0,0 +1,412 @@
1/*
2 * linux/drivers/video/console/fbcon_ud.c -- Software Rotation - 90 degrees
3 *
4 * Copyright (C) 2005 Antonino Daplas <adaplas @pol.net>
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file COPYING in the main directory of this archive for
8 * more details.
9 */
10
11#include <linux/config.h>
12#include <linux/module.h>
13#include <linux/string.h>
14#include <linux/fb.h>
15#include <linux/vt_kern.h>
16#include <linux/console.h>
17#include <asm/types.h>
18#include "fbcon.h"
19#include "fbcon_rotate.h"
20
21/*
22 * Rotation 90 degrees
23 */
24
25static inline void cw_update_attr(u8 *dst, u8 *src, int attribute,
26 struct vc_data *vc)
27{
28 int i, j, offset = (vc->vc_font.height < 10) ? 1 : 2;
29 int width = (vc->vc_font.height + 7) >> 3;
30 u8 c, t = 0, msk = ~(0xff >> offset);
31
32 for (i = 0; i < vc->vc_font.width; i++) {
33 for (j = 0; j < width; j++) {
34 c = *src;
35 if (attribute & FBCON_ATTRIBUTE_UNDERLINE && !j)
36 c |= msk;
37 if (attribute & FBCON_ATTRIBUTE_BOLD && i)
38 c |= *(src-width);
39 if (attribute & FBCON_ATTRIBUTE_REVERSE)
40 c = ~c;
41 src++;
42 *dst++ = c;
43 t = c;
44 }
45 }
46}
47
48
49static void cw_bmove(struct vc_data *vc, struct fb_info *info, int sy,
50 int sx, int dy, int dx, int height, int width)
51{
52 struct display *p = &fb_display[vc->vc_num];
53 struct fb_copyarea area;
54 u32 vxres = GETVXRES(p->scrollmode, info);
55
56 area.sx = vxres - ((sy + height) * vc->vc_font.height);
57 area.sy = sx * vc->vc_font.width;
58 area.dx = vxres - ((dy + height) * vc->vc_font.height);
59 area.dy = dx * vc->vc_font.width;
60 area.width = height * vc->vc_font.height;
61 area.height = width * vc->vc_font.width;
62
63 info->fbops->fb_copyarea(info, &area);
64}
65
66static void cw_clear(struct vc_data *vc, struct fb_info *info, int sy,
67 int sx, int height, int width)
68{
69 struct display *p = &fb_display[vc->vc_num];
70 struct fb_fillrect region;
71 int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
72 u32 vxres = GETVXRES(p->scrollmode, info);
73
74 region.color = attr_bgcol_ec(bgshift,vc);
75 region.dx = vxres - ((sy + height) * vc->vc_font.height);
76 region.dy = sx * vc->vc_font.width;
77 region.height = width * vc->vc_font.width;
78 region.width = height * vc->vc_font.height;
79 region.rop = ROP_COPY;
80
81 info->fbops->fb_fillrect(info, &region);
82}
83
84static inline void cw_putcs_aligned(struct vc_data *vc, struct fb_info *info,
85 const u16 *s, u32 attr, u32 cnt,
86 u32 d_pitch, u32 s_pitch, u32 cellsize,
87 struct fb_image *image, u8 *buf, u8 *dst)
88{
89 struct fbcon_ops *ops = info->fbcon_par;
90 u16 charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
91 u32 idx = (vc->vc_font.height + 7) >> 3;
92 u8 *src;
93
94 while (cnt--) {
95 src = ops->fontbuffer + (scr_readw(s++) & charmask)*cellsize;
96
97 if (attr) {
98 cw_update_attr(buf, src, attr, vc);
99 src = buf;
100 }
101
102 if (likely(idx == 1))
103 __fb_pad_aligned_buffer(dst, d_pitch, src, idx,
104 vc->vc_font.width);
105 else
106 fb_pad_aligned_buffer(dst, d_pitch, src, idx,
107 vc->vc_font.width);
108
109 dst += d_pitch * vc->vc_font.width;
110 }
111
112 info->fbops->fb_imageblit(info, image);
113}
114
115static void cw_putcs(struct vc_data *vc, struct fb_info *info,
116 const unsigned short *s, int count, int yy, int xx,
117 int fg, int bg)
118{
119 struct fb_image image;
120 struct display *p = &fb_display[vc->vc_num];
121 struct fbcon_ops *ops = info->fbcon_par;
122 u32 width = (vc->vc_font.height + 7)/8;
123 u32 cellsize = width * vc->vc_font.width;
124 u32 maxcnt = info->pixmap.size/cellsize;
125 u32 scan_align = info->pixmap.scan_align - 1;
126 u32 buf_align = info->pixmap.buf_align - 1;
127 u32 cnt, pitch, size;
128 u32 attribute = get_attribute(info, scr_readw(s));
129 u8 *dst, *buf = NULL;
130 u32 vxres = GETVXRES(p->scrollmode, info);
131
132 if (!ops->fontbuffer)
133 return;
134
135 image.fg_color = fg;
136 image.bg_color = bg;
137 image.dx = vxres - ((yy + 1) * vc->vc_font.height);
138 image.dy = xx * vc->vc_font.width;
139 image.width = vc->vc_font.height;
140 image.depth = 1;
141
142 if (attribute) {
143 buf = kmalloc(cellsize, GFP_KERNEL);
144 if (!buf)
145 return;
146 }
147
148 while (count) {
149 if (count > maxcnt)
150 cnt = maxcnt;
151 else
152 cnt = count;
153
154 image.height = vc->vc_font.width * cnt;
155 pitch = ((image.width + 7) >> 3) + scan_align;
156 pitch &= ~scan_align;
157 size = pitch * image.height + buf_align;
158 size &= ~buf_align;
159 dst = fb_get_buffer_offset(info, &info->pixmap, size);
160 image.data = dst;
161 cw_putcs_aligned(vc, info, s, attribute, cnt, pitch,
162 width, cellsize, &image, buf, dst);
163 image.dy += image.height;
164 count -= cnt;
165 s += cnt;
166 }
167
168 /* buf is always NULL except when in monochrome mode, so in this case
169 it's a gain to check buf against NULL even though kfree() handles
170 NULL pointers just fine */
171 if (unlikely(buf))
172 kfree(buf);
173
174}
175
176static void cw_clear_margins(struct vc_data *vc, struct fb_info *info,
177 int bottom_only)
178{
179 unsigned int cw = vc->vc_font.width;
180 unsigned int ch = vc->vc_font.height;
181 unsigned int rw = info->var.yres - (vc->vc_cols*cw);
182 unsigned int bh = info->var.xres - (vc->vc_rows*ch);
183 unsigned int rs = info->var.yres - rw;
184 struct fb_fillrect region;
185 int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
186
187 region.color = attr_bgcol_ec(bgshift,vc);
188 region.rop = ROP_COPY;
189
190 if (rw && !bottom_only) {
191 region.dx = 0;
192 region.dy = info->var.yoffset + rs;
193 region.height = rw;
194 region.width = info->var.xres_virtual;
195 info->fbops->fb_fillrect(info, &region);
196 }
197
198 if (bh) {
199 region.dx = info->var.xoffset;
200 region.dy = info->var.yoffset;
201 region.height = info->var.yres;
202 region.width = bh;
203 info->fbops->fb_fillrect(info, &region);
204 }
205}
206
207static void cw_cursor(struct vc_data *vc, struct fb_info *info,
208 struct display *p, int mode, int softback_lines,
209 int fg, int bg)
210{
211 struct fb_cursor cursor;
212 struct fbcon_ops *ops = (struct fbcon_ops *) info->fbcon_par;
213 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
214 int w = (vc->vc_font.height + 7) >> 3, c;
215 int y = real_y(p, vc->vc_y);
216 int attribute, use_sw = (vc->vc_cursor_type & 0x10);
217 int err = 1, dx, dy;
218 char *src;
219 u32 vxres = GETVXRES(p->scrollmode, info);
220
221 if (!ops->fontbuffer)
222 return;
223
224 cursor.set = 0;
225
226 if (softback_lines) {
227 if (y + softback_lines >= vc->vc_rows) {
228 mode = CM_ERASE;
229 ops->cursor_flash = 0;
230 return;
231 } else
232 y += softback_lines;
233 }
234
235 c = scr_readw((u16 *) vc->vc_pos);
236 attribute = get_attribute(info, c);
237 src = ops->fontbuffer + ((c & charmask) * (w * vc->vc_font.width));
238
239 if (ops->cursor_state.image.data != src ||
240 ops->cursor_reset) {
241 ops->cursor_state.image.data = src;
242 cursor.set |= FB_CUR_SETIMAGE;
243 }
244
245 if (attribute) {
246 u8 *dst;
247
248 dst = kmalloc(w * vc->vc_font.width, GFP_ATOMIC);
249 if (!dst)
250 return;
251 kfree(ops->cursor_data);
252 ops->cursor_data = dst;
253 cw_update_attr(dst, src, attribute, vc);
254 src = dst;
255 }
256
257 if (ops->cursor_state.image.fg_color != fg ||
258 ops->cursor_state.image.bg_color != bg ||
259 ops->cursor_reset) {
260 ops->cursor_state.image.fg_color = fg;
261 ops->cursor_state.image.bg_color = bg;
262 cursor.set |= FB_CUR_SETCMAP;
263 }
264
265 if (ops->cursor_state.image.height != vc->vc_font.width ||
266 ops->cursor_state.image.width != vc->vc_font.height ||
267 ops->cursor_reset) {
268 ops->cursor_state.image.height = vc->vc_font.width;
269 ops->cursor_state.image.width = vc->vc_font.height;
270 cursor.set |= FB_CUR_SETSIZE;
271 }
272
273 dx = vxres - ((y * vc->vc_font.height) + vc->vc_font.height);
274 dy = vc->vc_x * vc->vc_font.width;
275
276 if (ops->cursor_state.image.dx != dx ||
277 ops->cursor_state.image.dy != dy ||
278 ops->cursor_reset) {
279 ops->cursor_state.image.dx = dx;
280 ops->cursor_state.image.dy = dy;
281 cursor.set |= FB_CUR_SETPOS;
282 }
283
284 if (ops->cursor_state.hot.x || ops->cursor_state.hot.y ||
285 ops->cursor_reset) {
286 ops->cursor_state.hot.x = cursor.hot.y = 0;
287 cursor.set |= FB_CUR_SETHOT;
288 }
289
290 if (cursor.set & FB_CUR_SETSIZE ||
291 vc->vc_cursor_type != p->cursor_shape ||
292 ops->cursor_state.mask == NULL ||
293 ops->cursor_reset) {
294 char *tmp, *mask = kmalloc(w*vc->vc_font.width, GFP_ATOMIC);
295 int cur_height, size, i = 0;
296 int width = (vc->vc_font.width + 7)/8;
297
298 if (!mask)
299 return;
300
301 tmp = kmalloc(width * vc->vc_font.height, GFP_ATOMIC);
302
303 if (!tmp) {
304 kfree(mask);
305 return;
306 }
307
308 kfree(ops->cursor_state.mask);
309 ops->cursor_state.mask = mask;
310
311 p->cursor_shape = vc->vc_cursor_type;
312 cursor.set |= FB_CUR_SETSHAPE;
313
314 switch (p->cursor_shape & CUR_HWMASK) {
315 case CUR_NONE:
316 cur_height = 0;
317 break;
318 case CUR_UNDERLINE:
319 cur_height = (vc->vc_font.height < 10) ? 1 : 2;
320 break;
321 case CUR_LOWER_THIRD:
322 cur_height = vc->vc_font.height/3;
323 break;
324 case CUR_LOWER_HALF:
325 cur_height = vc->vc_font.height >> 1;
326 break;
327 case CUR_TWO_THIRDS:
328 cur_height = (vc->vc_font.height << 1)/3;
329 break;
330 case CUR_BLOCK:
331 default:
332 cur_height = vc->vc_font.height;
333 break;
334 }
335
336 size = (vc->vc_font.height - cur_height) * width;
337 while (size--)
338 tmp[i++] = 0;
339 size = cur_height * width;
340 while (size--)
341 tmp[i++] = 0xff;
342 memset(mask, 0, w * vc->vc_font.width);
343 rotate_cw(tmp, mask, vc->vc_font.width, vc->vc_font.height);
344 kfree(tmp);
345 }
346
347 switch (mode) {
348 case CM_ERASE:
349 ops->cursor_state.enable = 0;
350 break;
351 case CM_DRAW:
352 case CM_MOVE:
353 default:
354 ops->cursor_state.enable = (use_sw) ? 0 : 1;
355 break;
356 }
357
358 cursor.image.data = src;
359 cursor.image.fg_color = ops->cursor_state.image.fg_color;
360 cursor.image.bg_color = ops->cursor_state.image.bg_color;
361 cursor.image.dx = ops->cursor_state.image.dx;
362 cursor.image.dy = ops->cursor_state.image.dy;
363 cursor.image.height = ops->cursor_state.image.height;
364 cursor.image.width = ops->cursor_state.image.width;
365 cursor.hot.x = ops->cursor_state.hot.x;
366 cursor.hot.y = ops->cursor_state.hot.y;
367 cursor.mask = ops->cursor_state.mask;
368 cursor.enable = ops->cursor_state.enable;
369 cursor.image.depth = 1;
370 cursor.rop = ROP_XOR;
371
372 if (info->fbops->fb_cursor)
373 err = info->fbops->fb_cursor(info, &cursor);
374
375 if (err)
376 soft_cursor(info, &cursor);
377
378 ops->cursor_reset = 0;
379}
380
381int cw_update_start(struct fb_info *info)
382{
383 struct fbcon_ops *ops = info->fbcon_par;
384 struct display *p = &fb_display[ops->currcon];
385 u32 vxres = GETVXRES(p->scrollmode, info);
386 u32 xoffset;
387 int err;
388
389 xoffset = vxres - (info->var.xres + ops->var.yoffset);
390 ops->var.yoffset = ops->var.xoffset;
391 ops->var.xoffset = xoffset;
392 err = fb_pan_display(info, &ops->var);
393 ops->var.xoffset = info->var.xoffset;
394 ops->var.yoffset = info->var.yoffset;
395 ops->var.vmode = info->var.vmode;
396 return err;
397}
398
399void fbcon_rotate_cw(struct fbcon_ops *ops)
400{
401 ops->bmove = cw_bmove;
402 ops->clear = cw_clear;
403 ops->putcs = cw_putcs;
404 ops->clear_margins = cw_clear_margins;
405 ops->cursor = cw_cursor;
406 ops->update_start = cw_update_start;
407}
408EXPORT_SYMBOL(fbcon_rotate_cw);
409
410MODULE_AUTHOR("Antonino Daplas <adaplas@pol.net>");
411MODULE_DESCRIPTION("Console Rotation (90 degrees) Support");
412MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-21 03:53:10 -0500