2 * linux/drivers/video/console/fbcon_ccw.c -- Software Rotation - 270 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/module.h>
12 #include <linux/string.h>
14 #include <linux/vt_kern.h>
15 #include <linux/console.h>
16 #include <asm/types.h>
18 #include "fbcon_rotate.h"
21 * Rotation 270 degrees
24 static inline void ccw_update_attr(u8 *dst, u8 *src, int attribute,
27 int i, j, offset = (vc->vc_font.height < 10) ? 1 : 2;
28 int width = (vc->vc_font.height + 7) >> 3;
29 int mod = vc->vc_font.height % 8;
30 u8 c, msk = ~(0xff << offset), msk1 = 0;
38 for (i = 0; i < vc->vc_font.width; i++) {
39 for (j = 0; j < width; j++) {
42 if (attribute & FBCON_ATTRIBUTE_UNDERLINE) {
46 if (msk1 && j == width - 2)
50 if (attribute & FBCON_ATTRIBUTE_BOLD && i)
53 if (attribute & FBCON_ATTRIBUTE_REVERSE)
62 static void ccw_bmove(struct vc_data *vc, struct fb_info *info, int sy,
63 int sx, int dy, int dx, int height, int width)
65 struct fbcon_ops *ops = info->fbcon_par;
66 struct fb_copyarea area;
67 u32 vyres = GETVYRES(ops->p->scrollmode, info);
69 area.sx = sy * vc->vc_font.height;
70 area.sy = vyres - ((sx + width) * vc->vc_font.width);
71 area.dx = dy * vc->vc_font.height;
72 area.dy = vyres - ((dx + width) * vc->vc_font.width);
73 area.width = height * vc->vc_font.height;
74 area.height = width * vc->vc_font.width;
76 info->fbops->fb_copyarea(info, &area);
79 static void ccw_clear(struct vc_data *vc, struct fb_info *info, int sy,
80 int sx, int height, int width)
82 struct fbcon_ops *ops = info->fbcon_par;
83 struct fb_fillrect region;
84 int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
85 u32 vyres = GETVYRES(ops->p->scrollmode, info);
87 region.color = attr_bgcol_ec(bgshift,vc);
88 region.dx = sy * vc->vc_font.height;
89 region.dy = vyres - ((sx + width) * vc->vc_font.width);
90 region.height = width * vc->vc_font.width;
91 region.width = height * vc->vc_font.height;
92 region.rop = ROP_COPY;
94 info->fbops->fb_fillrect(info, ®ion);
97 static inline void ccw_putcs_aligned(struct vc_data *vc, struct fb_info *info,
98 const u16 *s, u32 attr, u32 cnt,
99 u32 d_pitch, u32 s_pitch, u32 cellsize,
100 struct fb_image *image, u8 *buf, u8 *dst)
102 struct fbcon_ops *ops = info->fbcon_par;
103 u16 charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
104 u32 idx = (vc->vc_font.height + 7) >> 3;
108 src = ops->fontbuffer + (scr_readw(s--) & charmask)*cellsize;
111 ccw_update_attr(buf, src, attr, vc);
115 if (likely(idx == 1))
116 __fb_pad_aligned_buffer(dst, d_pitch, src, idx,
119 fb_pad_aligned_buffer(dst, d_pitch, src, idx,
122 dst += d_pitch * vc->vc_font.width;
125 info->fbops->fb_imageblit(info, image);
128 static void ccw_putcs(struct vc_data *vc, struct fb_info *info,
129 const unsigned short *s, int count, int yy, int xx,
132 struct fb_image image;
133 struct fbcon_ops *ops = info->fbcon_par;
134 u32 width = (vc->vc_font.height + 7)/8;
135 u32 cellsize = width * vc->vc_font.width;
136 u32 maxcnt = info->pixmap.size/cellsize;
137 u32 scan_align = info->pixmap.scan_align - 1;
138 u32 buf_align = info->pixmap.buf_align - 1;
139 u32 cnt, pitch, size;
140 u32 attribute = get_attribute(info, scr_readw(s));
141 u8 *dst, *buf = NULL;
142 u32 vyres = GETVYRES(ops->p->scrollmode, info);
144 if (!ops->fontbuffer)
149 image.dx = yy * vc->vc_font.height;
150 image.dy = vyres - ((xx + count) * vc->vc_font.width);
151 image.width = vc->vc_font.height;
155 buf = kmalloc(cellsize, GFP_KERNEL);
168 image.height = vc->vc_font.width * cnt;
169 pitch = ((image.width + 7) >> 3) + scan_align;
170 pitch &= ~scan_align;
171 size = pitch * image.height + buf_align;
173 dst = fb_get_buffer_offset(info, &info->pixmap, size);
175 ccw_putcs_aligned(vc, info, s, attribute, cnt, pitch,
176 width, cellsize, &image, buf, dst);
177 image.dy += image.height;
182 /* buf is always NULL except when in monochrome mode, so in this case
183 it's a gain to check buf against NULL even though kfree() handles
184 NULL pointers just fine */
190 static void ccw_clear_margins(struct vc_data *vc, struct fb_info *info,
193 unsigned int cw = vc->vc_font.width;
194 unsigned int ch = vc->vc_font.height;
195 unsigned int rw = info->var.yres - (vc->vc_cols*cw);
196 unsigned int bh = info->var.xres - (vc->vc_rows*ch);
197 unsigned int bs = vc->vc_rows*ch;
198 struct fb_fillrect region;
199 int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
201 region.color = attr_bgcol_ec(bgshift,vc);
202 region.rop = ROP_COPY;
204 if (rw && !bottom_only) {
206 region.dy = info->var.yoffset;
208 region.width = info->var.xres_virtual;
209 info->fbops->fb_fillrect(info, ®ion);
213 region.dx = info->var.xoffset + bs;
215 region.height = info->var.yres_virtual;
217 info->fbops->fb_fillrect(info, ®ion);
221 static void ccw_cursor(struct vc_data *vc, struct fb_info *info, int mode,
222 int softback_lines, int fg, int bg)
224 struct fb_cursor cursor;
225 struct fbcon_ops *ops = info->fbcon_par;
226 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
227 int w = (vc->vc_font.height + 7) >> 3, c;
228 int y = real_y(ops->p, vc->vc_y);
229 int attribute, use_sw = (vc->vc_cursor_type & 0x10);
232 u32 vyres = GETVYRES(ops->p->scrollmode, info);
234 if (!ops->fontbuffer)
239 if (softback_lines) {
240 if (y + softback_lines >= vc->vc_rows) {
242 ops->cursor_flash = 0;
248 c = scr_readw((u16 *) vc->vc_pos);
249 attribute = get_attribute(info, c);
250 src = ops->fontbuffer + ((c & charmask) * (w * vc->vc_font.width));
252 if (ops->cursor_state.image.data != src ||
254 ops->cursor_state.image.data = src;
255 cursor.set |= FB_CUR_SETIMAGE;
261 dst = kmalloc(w * vc->vc_font.width, GFP_ATOMIC);
264 kfree(ops->cursor_data);
265 ops->cursor_data = dst;
266 ccw_update_attr(dst, src, attribute, vc);
270 if (ops->cursor_state.image.fg_color != fg ||
271 ops->cursor_state.image.bg_color != bg ||
273 ops->cursor_state.image.fg_color = fg;
274 ops->cursor_state.image.bg_color = bg;
275 cursor.set |= FB_CUR_SETCMAP;
278 if (ops->cursor_state.image.height != vc->vc_font.width ||
279 ops->cursor_state.image.width != vc->vc_font.height ||
281 ops->cursor_state.image.height = vc->vc_font.width;
282 ops->cursor_state.image.width = vc->vc_font.height;
283 cursor.set |= FB_CUR_SETSIZE;
286 dx = y * vc->vc_font.height;
287 dy = vyres - ((vc->vc_x + 1) * vc->vc_font.width);
289 if (ops->cursor_state.image.dx != dx ||
290 ops->cursor_state.image.dy != dy ||
292 ops->cursor_state.image.dx = dx;
293 ops->cursor_state.image.dy = dy;
294 cursor.set |= FB_CUR_SETPOS;
297 if (ops->cursor_state.hot.x || ops->cursor_state.hot.y ||
299 ops->cursor_state.hot.x = cursor.hot.y = 0;
300 cursor.set |= FB_CUR_SETHOT;
303 if (cursor.set & FB_CUR_SETSIZE ||
304 vc->vc_cursor_type != ops->p->cursor_shape ||
305 ops->cursor_state.mask == NULL ||
307 char *tmp, *mask = kmalloc(w*vc->vc_font.width, GFP_ATOMIC);
308 int cur_height, size, i = 0;
309 int width = (vc->vc_font.width + 7)/8;
314 tmp = kmalloc(width * vc->vc_font.height, GFP_ATOMIC);
321 kfree(ops->cursor_state.mask);
322 ops->cursor_state.mask = mask;
324 ops->p->cursor_shape = vc->vc_cursor_type;
325 cursor.set |= FB_CUR_SETSHAPE;
327 switch (ops->p->cursor_shape & CUR_HWMASK) {
332 cur_height = (vc->vc_font.height < 10) ? 1 : 2;
334 case CUR_LOWER_THIRD:
335 cur_height = vc->vc_font.height/3;
338 cur_height = vc->vc_font.height >> 1;
341 cur_height = (vc->vc_font.height << 1)/3;
345 cur_height = vc->vc_font.height;
349 size = (vc->vc_font.height - cur_height) * width;
352 size = cur_height * width;
355 memset(mask, 0, w * vc->vc_font.width);
356 rotate_ccw(tmp, mask, vc->vc_font.width, vc->vc_font.height);
362 ops->cursor_state.enable = 0;
367 ops->cursor_state.enable = (use_sw) ? 0 : 1;
371 cursor.image.data = src;
372 cursor.image.fg_color = ops->cursor_state.image.fg_color;
373 cursor.image.bg_color = ops->cursor_state.image.bg_color;
374 cursor.image.dx = ops->cursor_state.image.dx;
375 cursor.image.dy = ops->cursor_state.image.dy;
376 cursor.image.height = ops->cursor_state.image.height;
377 cursor.image.width = ops->cursor_state.image.width;
378 cursor.hot.x = ops->cursor_state.hot.x;
379 cursor.hot.y = ops->cursor_state.hot.y;
380 cursor.mask = ops->cursor_state.mask;
381 cursor.enable = ops->cursor_state.enable;
382 cursor.image.depth = 1;
383 cursor.rop = ROP_XOR;
385 if (info->fbops->fb_cursor)
386 err = info->fbops->fb_cursor(info, &cursor);
389 soft_cursor(info, &cursor);
391 ops->cursor_reset = 0;
394 static int ccw_update_start(struct fb_info *info)
396 struct fbcon_ops *ops = info->fbcon_par;
398 u32 vyres = GETVYRES(ops->p->scrollmode, info);
401 yoffset = (vyres - info->var.yres) - ops->var.xoffset;
402 ops->var.xoffset = ops->var.yoffset;
403 ops->var.yoffset = yoffset;
404 err = fb_pan_display(info, &ops->var);
405 ops->var.xoffset = info->var.xoffset;
406 ops->var.yoffset = info->var.yoffset;
407 ops->var.vmode = info->var.vmode;
411 void fbcon_rotate_ccw(struct fbcon_ops *ops)
413 ops->bmove = ccw_bmove;
414 ops->clear = ccw_clear;
415 ops->putcs = ccw_putcs;
416 ops->clear_margins = ccw_clear_margins;
417 ops->cursor = ccw_cursor;
418 ops->update_start = ccw_update_start;
420 EXPORT_SYMBOL(fbcon_rotate_ccw);
422 MODULE_AUTHOR("Antonino Daplas <adaplas@pol.net>");
423 MODULE_DESCRIPTION("Console Rotation (270 degrees) Support");
424 MODULE_LICENSE("GPL");