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/module.h> 12 #include <linux/slab.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 25 static 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, 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 } 44 } 45 } 46 47 48 static void cw_bmove(struct vc_data *vc, struct fb_info *info, int sy, 49 int sx, int dy, int dx, int height, int width) 50 { 51 struct fbcon_ops *ops = info->fbcon_par; 52 struct fb_copyarea area; 53 u32 vxres = GETVXRES(ops->p->scrollmode, info); 54 55 area.sx = vxres - ((sy + height) * vc->vc_font.height); 56 area.sy = sx * vc->vc_font.width; 57 area.dx = vxres - ((dy + height) * vc->vc_font.height); 58 area.dy = dx * vc->vc_font.width; 59 area.width = height * vc->vc_font.height; 60 area.height = width * vc->vc_font.width; 61 62 info->fbops->fb_copyarea(info, &area); 63 } 64 65 static void cw_clear(struct vc_data *vc, struct fb_info *info, int sy, 66 int sx, int height, int width) 67 { 68 struct fbcon_ops *ops = info->fbcon_par; 69 struct fb_fillrect region; 70 int bgshift = (vc->vc_hi_font_mask) ? 13 : 12; 71 u32 vxres = GETVXRES(ops->p->scrollmode, info); 72 73 region.color = attr_bgcol_ec(bgshift,vc,info); 74 region.dx = vxres - ((sy + height) * vc->vc_font.height); 75 region.dy = sx * vc->vc_font.width; 76 region.height = width * vc->vc_font.width; 77 region.width = height * vc->vc_font.height; 78 region.rop = ROP_COPY; 79 80 info->fbops->fb_fillrect(info, ®ion); 81 } 82 83 static inline void cw_putcs_aligned(struct vc_data *vc, struct fb_info *info, 84 const u16 *s, u32 attr, u32 cnt, 85 u32 d_pitch, u32 s_pitch, u32 cellsize, 86 struct fb_image *image, u8 *buf, u8 *dst) 87 { 88 struct fbcon_ops *ops = info->fbcon_par; 89 u16 charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; 90 u32 idx = (vc->vc_font.height + 7) >> 3; 91 u8 *src; 92 93 while (cnt--) { 94 src = ops->fontbuffer + (scr_readw(s++) & charmask)*cellsize; 95 96 if (attr) { 97 cw_update_attr(buf, src, attr, vc); 98 src = buf; 99 } 100 101 if (likely(idx == 1)) 102 __fb_pad_aligned_buffer(dst, d_pitch, src, idx, 103 vc->vc_font.width); 104 else 105 fb_pad_aligned_buffer(dst, d_pitch, src, idx, 106 vc->vc_font.width); 107 108 dst += d_pitch * vc->vc_font.width; 109 } 110 111 info->fbops->fb_imageblit(info, image); 112 } 113 114 static void cw_putcs(struct vc_data *vc, struct fb_info *info, 115 const unsigned short *s, int count, int yy, int xx, 116 int fg, int bg) 117 { 118 struct fb_image image; 119 struct fbcon_ops *ops = info->fbcon_par; 120 u32 width = (vc->vc_font.height + 7)/8; 121 u32 cellsize = width * vc->vc_font.width; 122 u32 maxcnt = info->pixmap.size/cellsize; 123 u32 scan_align = info->pixmap.scan_align - 1; 124 u32 buf_align = info->pixmap.buf_align - 1; 125 u32 cnt, pitch, size; 126 u32 attribute = get_attribute(info, scr_readw(s)); 127 u8 *dst, *buf = NULL; 128 u32 vxres = GETVXRES(ops->p->scrollmode, info); 129 130 if (!ops->fontbuffer) 131 return; 132 133 image.fg_color = fg; 134 image.bg_color = bg; 135 image.dx = vxres - ((yy + 1) * vc->vc_font.height); 136 image.dy = xx * vc->vc_font.width; 137 image.width = vc->vc_font.height; 138 image.depth = 1; 139 140 if (attribute) { 141 buf = kmalloc(cellsize, GFP_KERNEL); 142 if (!buf) 143 return; 144 } 145 146 while (count) { 147 if (count > maxcnt) 148 cnt = maxcnt; 149 else 150 cnt = count; 151 152 image.height = vc->vc_font.width * cnt; 153 pitch = ((image.width + 7) >> 3) + scan_align; 154 pitch &= ~scan_align; 155 size = pitch * image.height + buf_align; 156 size &= ~buf_align; 157 dst = fb_get_buffer_offset(info, &info->pixmap, size); 158 image.data = dst; 159 cw_putcs_aligned(vc, info, s, attribute, cnt, pitch, 160 width, cellsize, &image, buf, dst); 161 image.dy += image.height; 162 count -= cnt; 163 s += cnt; 164 } 165 166 /* buf is always NULL except when in monochrome mode, so in this case 167 it's a gain to check buf against NULL even though kfree() handles 168 NULL pointers just fine */ 169 if (unlikely(buf)) 170 kfree(buf); 171 172 } 173 174 static void cw_clear_margins(struct vc_data *vc, struct fb_info *info, 175 int color, int bottom_only) 176 { 177 unsigned int cw = vc->vc_font.width; 178 unsigned int ch = vc->vc_font.height; 179 unsigned int rw = info->var.yres - (vc->vc_cols*cw); 180 unsigned int bh = info->var.xres - (vc->vc_rows*ch); 181 unsigned int rs = info->var.yres - rw; 182 struct fb_fillrect region; 183 184 region.color = color; 185 region.rop = ROP_COPY; 186 187 if ((int) rw > 0 && !bottom_only) { 188 region.dx = 0; 189 region.dy = info->var.yoffset + rs; 190 region.height = rw; 191 region.width = info->var.xres_virtual; 192 info->fbops->fb_fillrect(info, ®ion); 193 } 194 195 if ((int) bh > 0) { 196 region.dx = info->var.xoffset; 197 region.dy = info->var.yoffset; 198 region.height = info->var.yres; 199 region.width = bh; 200 info->fbops->fb_fillrect(info, ®ion); 201 } 202 } 203 204 static void cw_cursor(struct vc_data *vc, struct fb_info *info, int mode, 205 int fg, int bg) 206 { 207 struct fb_cursor cursor; 208 struct fbcon_ops *ops = info->fbcon_par; 209 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; 210 int w = (vc->vc_font.height + 7) >> 3, c; 211 int y = real_y(ops->p, vc->state.y); 212 int attribute, use_sw = vc->vc_cursor_type & CUR_SW; 213 int err = 1, dx, dy; 214 char *src; 215 u32 vxres = GETVXRES(ops->p->scrollmode, info); 216 217 if (!ops->fontbuffer) 218 return; 219 220 cursor.set = 0; 221 222 c = scr_readw((u16 *) vc->vc_pos); 223 attribute = get_attribute(info, c); 224 src = ops->fontbuffer + ((c & charmask) * (w * vc->vc_font.width)); 225 226 if (ops->cursor_state.image.data != src || 227 ops->cursor_reset) { 228 ops->cursor_state.image.data = src; 229 cursor.set |= FB_CUR_SETIMAGE; 230 } 231 232 if (attribute) { 233 u8 *dst; 234 235 dst = kmalloc_array(w, vc->vc_font.width, GFP_ATOMIC); 236 if (!dst) 237 return; 238 kfree(ops->cursor_data); 239 ops->cursor_data = dst; 240 cw_update_attr(dst, src, attribute, vc); 241 src = dst; 242 } 243 244 if (ops->cursor_state.image.fg_color != fg || 245 ops->cursor_state.image.bg_color != bg || 246 ops->cursor_reset) { 247 ops->cursor_state.image.fg_color = fg; 248 ops->cursor_state.image.bg_color = bg; 249 cursor.set |= FB_CUR_SETCMAP; 250 } 251 252 if (ops->cursor_state.image.height != vc->vc_font.width || 253 ops->cursor_state.image.width != vc->vc_font.height || 254 ops->cursor_reset) { 255 ops->cursor_state.image.height = vc->vc_font.width; 256 ops->cursor_state.image.width = vc->vc_font.height; 257 cursor.set |= FB_CUR_SETSIZE; 258 } 259 260 dx = vxres - ((y * vc->vc_font.height) + vc->vc_font.height); 261 dy = vc->state.x * vc->vc_font.width; 262 263 if (ops->cursor_state.image.dx != dx || 264 ops->cursor_state.image.dy != dy || 265 ops->cursor_reset) { 266 ops->cursor_state.image.dx = dx; 267 ops->cursor_state.image.dy = dy; 268 cursor.set |= FB_CUR_SETPOS; 269 } 270 271 if (ops->cursor_state.hot.x || ops->cursor_state.hot.y || 272 ops->cursor_reset) { 273 ops->cursor_state.hot.x = cursor.hot.y = 0; 274 cursor.set |= FB_CUR_SETHOT; 275 } 276 277 if (cursor.set & FB_CUR_SETSIZE || 278 vc->vc_cursor_type != ops->p->cursor_shape || 279 ops->cursor_state.mask == NULL || 280 ops->cursor_reset) { 281 char *tmp, *mask = kmalloc_array(w, vc->vc_font.width, 282 GFP_ATOMIC); 283 int cur_height, size, i = 0; 284 int width = (vc->vc_font.width + 7)/8; 285 286 if (!mask) 287 return; 288 289 tmp = kmalloc_array(width, vc->vc_font.height, GFP_ATOMIC); 290 291 if (!tmp) { 292 kfree(mask); 293 return; 294 } 295 296 kfree(ops->cursor_state.mask); 297 ops->cursor_state.mask = mask; 298 299 ops->p->cursor_shape = vc->vc_cursor_type; 300 cursor.set |= FB_CUR_SETSHAPE; 301 302 switch (CUR_SIZE(ops->p->cursor_shape)) { 303 case CUR_NONE: 304 cur_height = 0; 305 break; 306 case CUR_UNDERLINE: 307 cur_height = (vc->vc_font.height < 10) ? 1 : 2; 308 break; 309 case CUR_LOWER_THIRD: 310 cur_height = vc->vc_font.height/3; 311 break; 312 case CUR_LOWER_HALF: 313 cur_height = vc->vc_font.height >> 1; 314 break; 315 case CUR_TWO_THIRDS: 316 cur_height = (vc->vc_font.height << 1)/3; 317 break; 318 case CUR_BLOCK: 319 default: 320 cur_height = vc->vc_font.height; 321 break; 322 } 323 324 size = (vc->vc_font.height - cur_height) * width; 325 while (size--) 326 tmp[i++] = 0; 327 size = cur_height * width; 328 while (size--) 329 tmp[i++] = 0xff; 330 memset(mask, 0, w * vc->vc_font.width); 331 rotate_cw(tmp, mask, vc->vc_font.width, vc->vc_font.height); 332 kfree(tmp); 333 } 334 335 switch (mode) { 336 case CM_ERASE: 337 ops->cursor_state.enable = 0; 338 break; 339 case CM_DRAW: 340 case CM_MOVE: 341 default: 342 ops->cursor_state.enable = (use_sw) ? 0 : 1; 343 break; 344 } 345 346 cursor.image.data = src; 347 cursor.image.fg_color = ops->cursor_state.image.fg_color; 348 cursor.image.bg_color = ops->cursor_state.image.bg_color; 349 cursor.image.dx = ops->cursor_state.image.dx; 350 cursor.image.dy = ops->cursor_state.image.dy; 351 cursor.image.height = ops->cursor_state.image.height; 352 cursor.image.width = ops->cursor_state.image.width; 353 cursor.hot.x = ops->cursor_state.hot.x; 354 cursor.hot.y = ops->cursor_state.hot.y; 355 cursor.mask = ops->cursor_state.mask; 356 cursor.enable = ops->cursor_state.enable; 357 cursor.image.depth = 1; 358 cursor.rop = ROP_XOR; 359 360 if (info->fbops->fb_cursor) 361 err = info->fbops->fb_cursor(info, &cursor); 362 363 if (err) 364 soft_cursor(info, &cursor); 365 366 ops->cursor_reset = 0; 367 } 368 369 static int cw_update_start(struct fb_info *info) 370 { 371 struct fbcon_ops *ops = info->fbcon_par; 372 u32 vxres = GETVXRES(ops->p->scrollmode, info); 373 u32 xoffset; 374 int err; 375 376 xoffset = vxres - (info->var.xres + ops->var.yoffset); 377 ops->var.yoffset = ops->var.xoffset; 378 ops->var.xoffset = xoffset; 379 err = fb_pan_display(info, &ops->var); 380 ops->var.xoffset = info->var.xoffset; 381 ops->var.yoffset = info->var.yoffset; 382 ops->var.vmode = info->var.vmode; 383 return err; 384 } 385 386 void fbcon_rotate_cw(struct fbcon_ops *ops) 387 { 388 ops->bmove = cw_bmove; 389 ops->clear = cw_clear; 390 ops->putcs = cw_putcs; 391 ops->clear_margins = cw_clear_margins; 392 ops->cursor = cw_cursor; 393 ops->update_start = cw_update_start; 394 } 395 EXPORT_SYMBOL(fbcon_rotate_cw); 396