1 /*
2 * linux/drivers/video/cfb32.c -- Low level frame buffer operations for 32 bpp
3 * truecolor packed pixels
4 *
5 * Created 28 Dec 1997 by Geert Uytterhoeven
6 *
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
9 * more details.
10 */
11
12 #include <linux/module.h>
13 #include <linux/tty.h>
14 #include <linux/console.h>
15 #include <linux/string.h>
16 #include <linux/fb.h>
17
18 #include <video/fbcon.h>
19 #include <video/fbcon-cfb32.h>
20
21
22 /*
23 * 32 bpp packed pixels
24 */
25
26 void fbcon_cfb32_setup(struct display *p)
27 {
28 p->next_line = p->line_length ? p->line_length : p->var.xres_virtual<<2;
29 p->next_plane = 0;
30 }
31
32 void fbcon_cfb32_bmove(struct display *p, int sy, int sx, int dy, int dx,
33 int height, int width)
34 {
35 int bytes = p->next_line, linesize = bytes * fontheight(p), rows;
36 u8 *src, *dst;
37
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,
41 height * linesize);
42 return;
43 }
44 if (fontwidthlog(p)) {
45 sx <<= fontwidthlog(p)+2;
46 dx <<= fontwidthlog(p)+2;
47 width <<= fontwidthlog(p)+2;
48 } else {
49 sx *= fontwidth(p)*4;
50 dx *= fontwidth(p)*4;
51 width *= fontwidth(p)*4;
52 }
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);
58 src += bytes;
59 dst += bytes;
60 }
61 } else {
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);
66 src -= bytes;
67 dst -= bytes;
68 }
69 }
70 }
71
72 static inline void rectfill(u8 *dest, int width, int height, u32 data,
73 int linesize)
74 {
75 int i;
76
77 while (height-- > 0) {
78 u32 *p = (u32 *)dest;
79 for (i = 0; i < width/4; i++) {
80 fb_writel(data, p++);
81 fb_writel(data, p++);
82 fb_writel(data, p++);
83 fb_writel(data, p++);
84 }
85 if (width & 2) {
86 fb_writel(data, p++);
87 fb_writel(data, p++);
88 }
89 if (width & 1)
90 fb_writel(data, p++);
91 dest += linesize;
92 }
93 }
94
95 void fbcon_cfb32_clear(struct vc_data *conp, struct display *p, int sy, int sx,
96 int height, int width)
97 {
98 u8 *dest;
99 int bytes = p->next_line, lines = height * fontheight(p);
100 u32 bgx;
101
102 dest = p->screen_base + sy * fontheight(p) * bytes + sx * fontwidth(p) * 4;
103
104 bgx = ((u32 *)p->dispsw_data)[attr_bgcol_ec(p, conp)];
105
106 width *= fontwidth(p)/4;
107 if (width * 16 == bytes)
108 rectfill(dest, lines * width * 4, 1, bgx, bytes);
109 else
110 rectfill(dest, width * 4, lines, bgx, bytes);
111 }
112
113 void fbcon_cfb32_putc(struct vc_data *conp, struct display *p, int c, int yy,
114 int xx)
115 {
116 u8 *dest, *cdat, bits;
117 int bytes = p->next_line, rows;
118 u32 eorx, fgx, bgx, *pt;
119
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);
123 else
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)];
127 eorx = fgx ^ bgx;
128
129 for (rows = fontheight(p); rows--; dest += bytes) {
130 bits = *cdat++;
131 pt = (u32 *) dest;
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)
137 continue;
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)
143 continue;
144 bits = *cdat++;
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)
150 continue;
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++);
155 }
156 }
157
158 void fbcon_cfb32_putcs(struct vc_data *conp, struct display *p,
159 const unsigned short *s, int count, int yy, int xx)
160 {
161 u8 *cdat, *dest, *dest0, bits;
162 u16 c;
163 int rows, bytes = p->next_line;
164 u32 eorx, fgx, bgx, *pt;
165
166 dest0 = p->screen_base + yy * fontheight(p) * bytes + xx * fontwidth(p) * 4;
167 fgx = ((u32 *)p->dispsw_data)[attr_fgcol(p, scr_readw(s))];
168 bgx = ((u32 *)p->dispsw_data)[attr_bgcol(p, scr_readw(s))];
169 eorx = fgx ^ bgx;
170 while (count--) {
171 c = scr_readw(s++) & p->charmask;
172 if (fontwidth(p) <= 8)
173 cdat = p->fontdata + c * fontheight(p);
174 else
175 cdat = p->fontdata + (c * fontheight(p) << 1);
176 for (rows = fontheight(p), dest = dest0; rows--; dest += bytes) {
177 bits = *cdat++;
178 pt = (u32 *) dest;
179 fb_writel((-(bits >> 7) & eorx) ^ bgx, pt++);
180 fb_writel((-(bits >> 6 & 1) & eorx) ^ bgx, pt++);
181 fb_writel((-(bits >> 5 & 1) & eorx) ^ bgx, pt++);
182 fb_writel((-(bits >> 4 & 1) & eorx) ^ bgx, pt++);
183 if (fontwidth(p) < 8)
184 continue;
185 fb_writel((-(bits >> 3 & 1) & eorx) ^ bgx, pt++);
186 fb_writel((-(bits >> 2 & 1) & eorx) ^ bgx, pt++);
187 fb_writel((-(bits >> 1 & 1) & eorx) ^ bgx, pt++);
188 fb_writel((-(bits & 1) & eorx) ^ bgx, pt++);
189 if (fontwidth(p) < 12)
190 continue;
191 bits = *cdat++;
192 fb_writel((-(bits >> 7) & eorx) ^ bgx, pt++);
193 fb_writel((-(bits >> 6 & 1) & eorx) ^ bgx, pt++);
194 fb_writel((-(bits >> 5 & 1) & eorx) ^ bgx, pt++);
195 fb_writel((-(bits >> 4 & 1) & eorx) ^ bgx, pt++);
196 if (fontwidth(p) < 16)
197 continue;
198 fb_writel((-(bits >> 3 & 1) & eorx) ^ bgx, pt++);
199 fb_writel((-(bits >> 2 & 1) & eorx) ^ bgx, pt++);
200 fb_writel((-(bits >> 1 & 1) & eorx) ^ bgx, pt++);
201 fb_writel((-(bits & 1) & eorx) ^ bgx, pt++);
202 }
203 dest0 += fontwidth(p)*4;
204 }
205 }
206
207 void fbcon_cfb32_revc(struct display *p, int xx, int yy)
208 {
209 u8 *dest;
210 int bytes = p->next_line, rows;
211
212 dest = p->screen_base + yy * fontheight(p) * bytes + xx * fontwidth(p) * 4;
213 for (rows = fontheight(p); rows--; dest += bytes) {
214 switch (fontwidth(p)) {
215 case 16:
216 fb_writel(fb_readl(dest+(4*12)) ^ 0xffffffff, dest+(4*12));
217 fb_writel(fb_readl(dest+(4*13)) ^ 0xffffffff, dest+(4*13));
218 fb_writel(fb_readl(dest+(4*14)) ^ 0xffffffff, dest+(4*14));
219 fb_writel(fb_readl(dest+(4*15)) ^ 0xffffffff, dest+(4*15));
220 /* FALL THROUGH */
221 case 12:
222 fb_writel(fb_readl(dest+(4*8)) ^ 0xffffffff, dest+(4*8));
223 fb_writel(fb_readl(dest+(4*9)) ^ 0xffffffff, dest+(4*9));
224 fb_writel(fb_readl(dest+(4*10)) ^ 0xffffffff, dest+(4*10));
225 fb_writel(fb_readl(dest+(4*11)) ^ 0xffffffff, dest+(4*11));
226 /* FALL THROUGH */
227 case 8:
228 fb_writel(fb_readl(dest+(4*4)) ^ 0xffffffff, dest+(4*4));
229 fb_writel(fb_readl(dest+(4*5)) ^ 0xffffffff, dest+(4*5));
230 fb_writel(fb_readl(dest+(4*6)) ^ 0xffffffff, dest+(4*6));
231 fb_writel(fb_readl(dest+(4*7)) ^ 0xffffffff, dest+(4*7));
232 /* FALL THROUGH */
233 case 4:
234 fb_writel(fb_readl(dest+(4*0)) ^ 0xffffffff, dest+(4*0));
235 fb_writel(fb_readl(dest+(4*1)) ^ 0xffffffff, dest+(4*1));
236 fb_writel(fb_readl(dest+(4*2)) ^ 0xffffffff, dest+(4*2));
237 fb_writel(fb_readl(dest+(4*3)) ^ 0xffffffff, dest+(4*3));
238 /* FALL THROUGH */
239 }
240 }
241 }
242
243 void fbcon_cfb32_clear_margins(struct vc_data *conp, struct display *p,
244 int bottom_only)
245 {
246 int bytes = p->next_line;
247 u32 bgx;
248
249 unsigned int right_start = conp->vc_cols*fontwidth(p);
250 unsigned int bottom_start = conp->vc_rows*fontheight(p);
251 unsigned int right_width, bottom_width;
252
253 bgx = ((u32 *)p->dispsw_data)[attr_bgcol_ec(p, conp)];
254
255 if (!bottom_only && (right_width = p->var.xres-right_start))
256 rectfill(p->screen_base+right_start*4, right_width,
257 p->var.yres_virtual, bgx, bytes);
258 if ((bottom_width = p->var.yres-bottom_start))
259 rectfill(p->screen_base+(p->var.yoffset+bottom_start)*bytes,
260 right_start, bottom_width, bgx, bytes);
261 }
262
263
264 /*
265 * `switch' for the low level operations
266 */
267
268 struct display_switch fbcon_cfb32 = {
269 setup: fbcon_cfb32_setup,
270 bmove: fbcon_cfb32_bmove,
271 clear: fbcon_cfb32_clear,
272 putc: fbcon_cfb32_putc,
273 putcs: fbcon_cfb32_putcs,
274 revc: fbcon_cfb32_revc,
275 clear_margins: fbcon_cfb32_clear_margins,
276 fontwidthmask: FONTWIDTH(4)|FONTWIDTH(8)|FONTWIDTH(12)|FONTWIDTH(16)
277 };
278
279
280 #ifdef MODULE
281 int init_module(void)
282 {
283 return 0;
284 }
285
286 void cleanup_module(void)
287 {}
288 #endif /* MODULE */
289
290
291 /*
292 * Visible symbols for modules
293 */
294
295 EXPORT_SYMBOL(fbcon_cfb32);
296 EXPORT_SYMBOL(fbcon_cfb32_setup);
297 EXPORT_SYMBOL(fbcon_cfb32_bmove);
298 EXPORT_SYMBOL(fbcon_cfb32_clear);
299 EXPORT_SYMBOL(fbcon_cfb32_putc);
300 EXPORT_SYMBOL(fbcon_cfb32_putcs);
301 EXPORT_SYMBOL(fbcon_cfb32_revc);
302 EXPORT_SYMBOL(fbcon_cfb32_clear_margins);
303
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