2 * linux/drivers/video/console/fbcon_ud.c -- Software Rotation - 90 degrees
4 * Copyright (C) 2005 Antonino Daplas <adaplas @pol.net>
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
11 #include <linux/config.h>
12 #include <linux/module.h>
13 #include <linux/string.h>
15 #include <linux/vt_kern.h>
16 #include <linux/console.h>
17 #include <asm/types.h>
19 #include "fbcon_rotate.h"
25 static inline void cw_update_attr(u8 *dst, u8 *src, int attribute,
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);
32 for (i = 0; i < vc->vc_font.width; i++) {
33 for (j = 0; j < width; j++) {
35 if (attribute & FBCON_ATTRIBUTE_UNDERLINE && !j)
37 if (attribute & FBCON_ATTRIBUTE_BOLD && i)
39 if (attribute & FBCON_ATTRIBUTE_REVERSE)
49 static void cw_bmove(struct vc_data *vc, struct fb_info *info, int sy,
50 int sx, int dy, int dx, int height, int width)
52 struct display *p = &fb_display[vc->vc_num];
53 struct fb_copyarea area;
54 u32 vxres = GETVXRES(p->scrollmode, info);
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;
63 info->fbops->fb_copyarea(info, &area);
66 static void cw_clear(struct vc_data *vc, struct fb_info *info, int sy,
67 int sx, int height, int width)
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);
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;
81 info->fbops->fb_fillrect(info, ®ion);
84 static 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)
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;
95 src = ops->fontbuffer + (scr_readw(s++) & charmask)*cellsize;
98 cw_update_attr(buf, src, attr, vc);
102 if (likely(idx == 1))
103 __fb_pad_aligned_buffer(dst, d_pitch, src, idx,
106 fb_pad_aligned_buffer(dst, d_pitch, src, idx,
109 dst += d_pitch * vc->vc_font.width;
112 info->fbops->fb_imageblit(info, image);
115 static void cw_putcs(struct vc_data *vc, struct fb_info *info,
116 const unsigned short *s, int count, int yy, int xx,
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);
132 if (!ops->fontbuffer)
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;
143 buf = kmalloc(cellsize, GFP_KERNEL);
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;
159 dst = fb_get_buffer_offset(info, &info->pixmap, size);
161 cw_putcs_aligned(vc, info, s, attribute, cnt, pitch,
162 width, cellsize, &image, buf, dst);
163 image.dy += image.height;
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 */
176 static void cw_clear_margins(struct vc_data *vc, struct fb_info *info,
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;
187 region.color = attr_bgcol_ec(bgshift,vc);
188 region.rop = ROP_COPY;
190 if (rw && !bottom_only) {
192 region.dy = info->var.yoffset + rs;
194 region.width = info->var.xres_virtual;
195 info->fbops->fb_fillrect(info, ®ion);
199 region.dx = info->var.xoffset;
200 region.dy = info->var.yoffset;
201 region.height = info->var.yres;
203 info->fbops->fb_fillrect(info, ®ion);
207 static void cw_cursor(struct vc_data *vc, struct fb_info *info,
208 struct display *p, int mode, int softback_lines,
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);
219 u32 vxres = GETVXRES(p->scrollmode, info);
221 if (!ops->fontbuffer)
226 if (softback_lines) {
227 if (y + softback_lines >= vc->vc_rows) {
229 ops->cursor_flash = 0;
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));
239 if (ops->cursor_state.image.data != src ||
241 ops->cursor_state.image.data = src;
242 cursor.set |= FB_CUR_SETIMAGE;
248 dst = kmalloc(w * vc->vc_font.width, GFP_ATOMIC);
251 kfree(ops->cursor_data);
252 ops->cursor_data = dst;
253 cw_update_attr(dst, src, attribute, vc);
257 if (ops->cursor_state.image.fg_color != fg ||
258 ops->cursor_state.image.bg_color != bg ||
260 ops->cursor_state.image.fg_color = fg;
261 ops->cursor_state.image.bg_color = bg;
262 cursor.set |= FB_CUR_SETCMAP;
265 if (ops->cursor_state.image.height != vc->vc_font.width ||
266 ops->cursor_state.image.width != vc->vc_font.height ||
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;
273 dx = vxres - ((y * vc->vc_font.height) + vc->vc_font.height);
274 dy = vc->vc_x * vc->vc_font.width;
276 if (ops->cursor_state.image.dx != dx ||
277 ops->cursor_state.image.dy != dy ||
279 ops->cursor_state.image.dx = dx;
280 ops->cursor_state.image.dy = dy;
281 cursor.set |= FB_CUR_SETPOS;
284 if (ops->cursor_state.hot.x || ops->cursor_state.hot.y ||
286 ops->cursor_state.hot.x = cursor.hot.y = 0;
287 cursor.set |= FB_CUR_SETHOT;
290 if (cursor.set & FB_CUR_SETSIZE ||
291 vc->vc_cursor_type != p->cursor_shape ||
292 ops->cursor_state.mask == NULL ||
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;
301 tmp = kmalloc(width * vc->vc_font.height, GFP_ATOMIC);
308 kfree(ops->cursor_state.mask);
309 ops->cursor_state.mask = mask;
311 p->cursor_shape = vc->vc_cursor_type;
312 cursor.set |= FB_CUR_SETSHAPE;
314 switch (p->cursor_shape & CUR_HWMASK) {
319 cur_height = (vc->vc_font.height < 10) ? 1 : 2;
321 case CUR_LOWER_THIRD:
322 cur_height = vc->vc_font.height/3;
325 cur_height = vc->vc_font.height >> 1;
328 cur_height = (vc->vc_font.height << 1)/3;
332 cur_height = vc->vc_font.height;
336 size = (vc->vc_font.height - cur_height) * width;
339 size = cur_height * width;
342 memset(mask, 0, w * vc->vc_font.width);
343 rotate_cw(tmp, mask, vc->vc_font.width, vc->vc_font.height);
349 ops->cursor_state.enable = 0;
354 ops->cursor_state.enable = (use_sw) ? 0 : 1;
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;
372 if (info->fbops->fb_cursor)
373 err = info->fbops->fb_cursor(info, &cursor);
376 soft_cursor(info, &cursor);
378 ops->cursor_reset = 0;
381 int cw_update_start(struct fb_info *info)
383 struct fbcon_ops *ops = info->fbcon_par;
384 struct display *p = &fb_display[ops->currcon];
385 u32 vxres = GETVXRES(p->scrollmode, info);
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;
399 void fbcon_rotate_cw(struct fbcon_ops *ops)
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;
408 EXPORT_SYMBOL(fbcon_rotate_cw);
410 MODULE_AUTHOR("Antonino Daplas <adaplas@pol.net>");
411 MODULE_DESCRIPTION("Console Rotation (90 degrees) Support");
412 MODULE_LICENSE("GPL");