2 * linux/drivers/video/cfb32.c -- Low level frame buffer operations for 32 bpp
3 * truecolor packed pixels
5 * Created 28 Dec 1997 by Geert Uytterhoeven
7 * This file is subject to the terms and conditions of the GNU General Public
8 * License. See the file COPYING in the main directory of this archive for
12 #include <linux/module.h>
13 #include <linux/tty.h>
14 #include <linux/console.h>
15 #include <linux/string.h>
18 #include <video/fbcon.h>
19 #include <video/fbcon-cfb32.h>
23 * 32 bpp packed pixels
26 void fbcon_cfb32_setup(struct display *p)
28 p->next_line = p->line_length ? p->line_length : p->var.xres_virtual<<2;
32 void fbcon_cfb32_bmove(struct display *p, int sy, int sx, int dy, int dx,
33 int height, int width)
35 int bytes = p->next_line, linesize = bytes * fontheight(p), rows;
38 if (sx == 0 && dx == 0 && width * fontwidth(p) * 4 == bytes) {
39 fb_memmove(p->screen_base + dy * linesize,
40 p->screen_base + sy * linesize,
44 if (fontwidthlog(p)) {
45 sx <<= fontwidthlog(p)+2;
46 dx <<= fontwidthlog(p)+2;
47 width <<= fontwidthlog(p)+2;
51 width *= fontwidth(p)*4;
53 if (dy < sy || (dy == sy && dx < sx)) {
54 src = p->screen_base + sy * linesize + sx;
55 dst = p->screen_base + dy * linesize + dx;
56 for (rows = height * fontheight(p); rows--;) {
57 fb_memmove(dst, src, width);
62 src = p->screen_base + (sy+height) * linesize + sx - bytes;
63 dst = p->screen_base + (dy+height) * linesize + dx - bytes;
64 for (rows = height * fontheight(p); rows--;) {
65 fb_memmove(dst, src, width);
72 static inline void rectfill(u8 *dest, int width, int height, u32 data,
77 while (height-- > 0) {
79 for (i = 0; i < width/4; i++) {
95 void fbcon_cfb32_clear(struct vc_data *conp, struct display *p, int sy, int sx,
96 int height, int width)
99 int bytes = p->next_line, lines = height * fontheight(p);
102 dest = p->screen_base + sy * fontheight(p) * bytes + sx * fontwidth(p) * 4;
104 bgx = ((u32 *)p->dispsw_data)[attr_bgcol_ec(p, conp)];
106 width *= fontwidth(p)/4;
107 if (width * 16 == bytes)
108 rectfill(dest, lines * width * 4, 1, bgx, bytes);
110 rectfill(dest, width * 4, lines, bgx, bytes);
113 void fbcon_cfb32_putc(struct vc_data *conp, struct display *p, int c, int yy,
116 u8 *dest, *cdat, bits;
117 int bytes = p->next_line, rows;
118 u32 eorx, fgx, bgx, *pt;
120 dest = p->screen_base + yy * fontheight(p) * bytes + xx * fontwidth(p) * 4;
121 if (fontwidth(p) <= 8)
122 cdat = p->fontdata + (c & p->charmask) * fontheight(p);
124 cdat = p->fontdata + ((c & p->charmask) * fontheight(p) << 1);
125 fgx = ((u32 *)p->dispsw_data)[attr_fgcol(p, c)];
126 bgx = ((u32 *)p->dispsw_data)[attr_bgcol(p, c)];
129 for (rows = fontheight(p); rows--; dest += bytes) {
132 fb_writel((-(bits >> 7) & eorx) ^ bgx, pt++);
133 fb_writel((-(bits >> 6 & 1) & eorx) ^ bgx, pt++);
134 fb_writel((-(bits >> 5 & 1) & eorx) ^ bgx, pt++);
135 fb_writel((-(bits >> 4 & 1) & eorx) ^ bgx, pt++);
136 if (fontwidth(p) < 8)
138 fb_writel((-(bits >> 3 & 1) & eorx) ^ bgx, pt++);
139 fb_writel((-(bits >> 2 & 1) & eorx) ^ bgx, pt++);
140 fb_writel((-(bits >> 1 & 1) & eorx) ^ bgx, pt++);
141 fb_writel((-(bits & 1) & eorx) ^ bgx, pt++);
142 if (fontwidth(p) < 12)
145 fb_writel((-(bits >> 7) & eorx) ^ bgx, pt++);
146 fb_writel((-(bits >> 6 & 1) & eorx) ^ bgx, pt++);
147 fb_writel((-(bits >> 5 & 1) & eorx) ^ bgx, pt++);
148 fb_writel((-(bits >> 4 & 1) & eorx) ^ bgx, pt++);
149 if (fontwidth(p) < 16)
151 fb_writel((-(bits >> 3 & 1) & eorx) ^ bgx, pt++);
152 fb_writel((-(bits >> 2 & 1) & eorx) ^ bgx, pt++);
153 fb_writel((-(bits >> 1 & 1) & eorx) ^ bgx, pt++);
154 fb_writel((-(bits & 1) & eorx) ^ bgx, pt++);
158 void fbcon_cfb32_putcs(struct vc_data *conp, struct display *p,
159 const unsigned short *s, int count, int yy, int xx)
161 u8 *cdat, *dest, *dest0, bits;
163 int rows, bytes = p->next_line;
164 u32 eorx, fgx, bgx, *pt;
166 dest0 = p->screen_base + yy * fontheight(p) * bytes + xx * fontwidth(p) * 4;
168 fgx = ((u32 *)p->dispsw_data)[attr_fgcol(p, c)];
169 bgx = ((u32 *)p->dispsw_data)[attr_bgcol(p, c)];
172 c = scr_readw(s++) & p->charmask;
173 if (fontwidth(p) <= 8)
174 cdat = p->fontdata + c * fontheight(p);
176 cdat = p->fontdata + (c * fontheight(p) << 1);
177 for (rows = fontheight(p), dest = dest0; rows--; dest += bytes) {
180 fb_writel((-(bits >> 7) & eorx) ^ bgx, pt++);
181 fb_writel((-(bits >> 6 & 1) & eorx) ^ bgx, pt++);
182 fb_writel((-(bits >> 5 & 1) & eorx) ^ bgx, pt++);
183 fb_writel((-(bits >> 4 & 1) & eorx) ^ bgx, pt++);
184 if (fontwidth(p) < 8)
186 fb_writel((-(bits >> 3 & 1) & eorx) ^ bgx, pt++);
187 fb_writel((-(bits >> 2 & 1) & eorx) ^ bgx, pt++);
188 fb_writel((-(bits >> 1 & 1) & eorx) ^ bgx, pt++);
189 fb_writel((-(bits & 1) & eorx) ^ bgx, pt++);
190 if (fontwidth(p) < 12)
193 fb_writel((-(bits >> 7) & eorx) ^ bgx, pt++);
194 fb_writel((-(bits >> 6 & 1) & eorx) ^ bgx, pt++);
195 fb_writel((-(bits >> 5 & 1) & eorx) ^ bgx, pt++);
196 fb_writel((-(bits >> 4 & 1) & eorx) ^ bgx, pt++);
197 if (fontwidth(p) < 16)
199 fb_writel((-(bits >> 3 & 1) & eorx) ^ bgx, pt++);
200 fb_writel((-(bits >> 2 & 1) & eorx) ^ bgx, pt++);
201 fb_writel((-(bits >> 1 & 1) & eorx) ^ bgx, pt++);
202 fb_writel((-(bits & 1) & eorx) ^ bgx, pt++);
204 dest0 += fontwidth(p)*4;
208 void fbcon_cfb32_revc(struct display *p, int xx, int yy)
211 int bytes = p->next_line, rows;
213 dest = p->screen_base + yy * fontheight(p) * bytes + xx * fontwidth(p) * 4;
214 for (rows = fontheight(p); rows--; dest += bytes) {
215 switch (fontwidth(p)) {
217 fb_writel(fb_readl(dest+(4*12)) ^ 0xffffffff, dest+(4*12));
218 fb_writel(fb_readl(dest+(4*13)) ^ 0xffffffff, dest+(4*13));
219 fb_writel(fb_readl(dest+(4*14)) ^ 0xffffffff, dest+(4*14));
220 fb_writel(fb_readl(dest+(4*15)) ^ 0xffffffff, dest+(4*15));
223 fb_writel(fb_readl(dest+(4*8)) ^ 0xffffffff, dest+(4*8));
224 fb_writel(fb_readl(dest+(4*9)) ^ 0xffffffff, dest+(4*9));
225 fb_writel(fb_readl(dest+(4*10)) ^ 0xffffffff, dest+(4*10));
226 fb_writel(fb_readl(dest+(4*11)) ^ 0xffffffff, dest+(4*11));
229 fb_writel(fb_readl(dest+(4*4)) ^ 0xffffffff, dest+(4*4));
230 fb_writel(fb_readl(dest+(4*5)) ^ 0xffffffff, dest+(4*5));
231 fb_writel(fb_readl(dest+(4*6)) ^ 0xffffffff, dest+(4*6));
232 fb_writel(fb_readl(dest+(4*7)) ^ 0xffffffff, dest+(4*7));
235 fb_writel(fb_readl(dest+(4*0)) ^ 0xffffffff, dest+(4*0));
236 fb_writel(fb_readl(dest+(4*1)) ^ 0xffffffff, dest+(4*1));
237 fb_writel(fb_readl(dest+(4*2)) ^ 0xffffffff, dest+(4*2));
238 fb_writel(fb_readl(dest+(4*3)) ^ 0xffffffff, dest+(4*3));
244 void fbcon_cfb32_clear_margins(struct vc_data *conp, struct display *p,
247 int bytes = p->next_line;
250 unsigned int right_start = conp->vc_cols*fontwidth(p);
251 unsigned int bottom_start = conp->vc_rows*fontheight(p);
252 unsigned int right_width, bottom_width;
254 bgx = ((u32 *)p->dispsw_data)[attr_bgcol_ec(p, conp)];
256 if (!bottom_only && (right_width = p->var.xres-right_start))
257 rectfill(p->screen_base+right_start*4, right_width,
258 p->var.yres_virtual, bgx, bytes);
259 if ((bottom_width = p->var.yres-bottom_start))
260 rectfill(p->screen_base+(p->var.yoffset+bottom_start)*bytes,
261 right_start, bottom_width, bgx, bytes);
266 * `switch' for the low level operations
269 struct display_switch fbcon_cfb32 = {
270 setup: fbcon_cfb32_setup,
271 bmove: fbcon_cfb32_bmove,
272 clear: fbcon_cfb32_clear,
273 putc: fbcon_cfb32_putc,
274 putcs: fbcon_cfb32_putcs,
275 revc: fbcon_cfb32_revc,
276 clear_margins: fbcon_cfb32_clear_margins,
277 fontwidthmask: FONTWIDTH(4)|FONTWIDTH(8)|FONTWIDTH(12)|FONTWIDTH(16)
282 MODULE_LICENSE("GPL");
284 int init_module(void)
289 void cleanup_module(void)
295 * Visible symbols for modules
298 EXPORT_SYMBOL(fbcon_cfb32);
299 EXPORT_SYMBOL(fbcon_cfb32_setup);
300 EXPORT_SYMBOL(fbcon_cfb32_bmove);
301 EXPORT_SYMBOL(fbcon_cfb32_clear);
302 EXPORT_SYMBOL(fbcon_cfb32_putc);
303 EXPORT_SYMBOL(fbcon_cfb32_putcs);
304 EXPORT_SYMBOL(fbcon_cfb32_revc);
305 EXPORT_SYMBOL(fbcon_cfb32_clear_margins);