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 softback_lines, 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 if (softback_lines) { 223 if (y + softback_lines >= vc->vc_rows) { 224 mode = CM_ERASE; 225 ops->cursor_flash = 0; 226 return; 227 } else 228 y += softback_lines; 229 } 230 231 c = scr_readw((u16 *) vc->vc_pos); 232 attribute = get_attribute(info, c); 233 src = ops->fontbuffer + ((c & charmask) * (w * vc->vc_font.width)); 234 235 if (ops->cursor_state.image.data != src || 236 ops->cursor_reset) { 237 ops->cursor_state.image.data = src; 238 cursor.set |= FB_CUR_SETIMAGE; 239 } 240 241 if (attribute) { 242 u8 *dst; 243 244 dst = kmalloc_array(w, vc->vc_font.width, GFP_ATOMIC); 245 if (!dst) 246 return; 247 kfree(ops->cursor_data); 248 ops->cursor_data = dst; 249 cw_update_attr(dst, src, attribute, vc); 250 src = dst; 251 } 252 253 if (ops->cursor_state.image.fg_color != fg || 254 ops->cursor_state.image.bg_color != bg || 255 ops->cursor_reset) { 256 ops->cursor_state.image.fg_color = fg; 257 ops->cursor_state.image.bg_color = bg; 258 cursor.set |= FB_CUR_SETCMAP; 259 } 260 261 if (ops->cursor_state.image.height != vc->vc_font.width || 262 ops->cursor_state.image.width != vc->vc_font.height || 263 ops->cursor_reset) { 264 ops->cursor_state.image.height = vc->vc_font.width; 265 ops->cursor_state.image.width = vc->vc_font.height; 266 cursor.set |= FB_CUR_SETSIZE; 267 } 268 269 dx = vxres - ((y * vc->vc_font.height) + vc->vc_font.height); 270 dy = vc->state.x * vc->vc_font.width; 271 272 if (ops->cursor_state.image.dx != dx || 273 ops->cursor_state.image.dy != dy || 274 ops->cursor_reset) { 275 ops->cursor_state.image.dx = dx; 276 ops->cursor_state.image.dy = dy; 277 cursor.set |= FB_CUR_SETPOS; 278 } 279 280 if (ops->cursor_state.hot.x || ops->cursor_state.hot.y || 281 ops->cursor_reset) { 282 ops->cursor_state.hot.x = cursor.hot.y = 0; 283 cursor.set |= FB_CUR_SETHOT; 284 } 285 286 if (cursor.set & FB_CUR_SETSIZE || 287 vc->vc_cursor_type != ops->p->cursor_shape || 288 ops->cursor_state.mask == NULL || 289 ops->cursor_reset) { 290 char *tmp, *mask = kmalloc_array(w, vc->vc_font.width, 291 GFP_ATOMIC); 292 int cur_height, size, i = 0; 293 int width = (vc->vc_font.width + 7)/8; 294 295 if (!mask) 296 return; 297 298 tmp = kmalloc_array(width, vc->vc_font.height, GFP_ATOMIC); 299 300 if (!tmp) { 301 kfree(mask); 302 return; 303 } 304 305 kfree(ops->cursor_state.mask); 306 ops->cursor_state.mask = mask; 307 308 ops->p->cursor_shape = vc->vc_cursor_type; 309 cursor.set |= FB_CUR_SETSHAPE; 310 311 switch (CUR_SIZE(ops->p->cursor_shape)) { 312 case CUR_NONE: 313 cur_height = 0; 314 break; 315 case CUR_UNDERLINE: 316 cur_height = (vc->vc_font.height < 10) ? 1 : 2; 317 break; 318 case CUR_LOWER_THIRD: 319 cur_height = vc->vc_font.height/3; 320 break; 321 case CUR_LOWER_HALF: 322 cur_height = vc->vc_font.height >> 1; 323 break; 324 case CUR_TWO_THIRDS: 325 cur_height = (vc->vc_font.height << 1)/3; 326 break; 327 case CUR_BLOCK: 328 default: 329 cur_height = vc->vc_font.height; 330 break; 331 } 332 333 size = (vc->vc_font.height - cur_height) * width; 334 while (size--) 335 tmp[i++] = 0; 336 size = cur_height * width; 337 while (size--) 338 tmp[i++] = 0xff; 339 memset(mask, 0, w * vc->vc_font.width); 340 rotate_cw(tmp, mask, vc->vc_font.width, vc->vc_font.height); 341 kfree(tmp); 342 } 343 344 switch (mode) { 345 case CM_ERASE: 346 ops->cursor_state.enable = 0; 347 break; 348 case CM_DRAW: 349 case CM_MOVE: 350 default: 351 ops->cursor_state.enable = (use_sw) ? 0 : 1; 352 break; 353 } 354 355 cursor.image.data = src; 356 cursor.image.fg_color = ops->cursor_state.image.fg_color; 357 cursor.image.bg_color = ops->cursor_state.image.bg_color; 358 cursor.image.dx = ops->cursor_state.image.dx; 359 cursor.image.dy = ops->cursor_state.image.dy; 360 cursor.image.height = ops->cursor_state.image.height; 361 cursor.image.width = ops->cursor_state.image.width; 362 cursor.hot.x = ops->cursor_state.hot.x; 363 cursor.hot.y = ops->cursor_state.hot.y; 364 cursor.mask = ops->cursor_state.mask; 365 cursor.enable = ops->cursor_state.enable; 366 cursor.image.depth = 1; 367 cursor.rop = ROP_XOR; 368 369 if (info->fbops->fb_cursor) 370 err = info->fbops->fb_cursor(info, &cursor); 371 372 if (err) 373 soft_cursor(info, &cursor); 374 375 ops->cursor_reset = 0; 376 } 377 378 static int cw_update_start(struct fb_info *info) 379 { 380 struct fbcon_ops *ops = info->fbcon_par; 381 u32 vxres = GETVXRES(ops->p->scrollmode, info); 382 u32 xoffset; 383 int err; 384 385 xoffset = vxres - (info->var.xres + ops->var.yoffset); 386 ops->var.yoffset = ops->var.xoffset; 387 ops->var.xoffset = xoffset; 388 err = fb_pan_display(info, &ops->var); 389 ops->var.xoffset = info->var.xoffset; 390 ops->var.yoffset = info->var.yoffset; 391 ops->var.vmode = info->var.vmode; 392 return err; 393 } 394 395 void fbcon_rotate_cw(struct fbcon_ops *ops) 396 { 397 ops->bmove = cw_bmove; 398 ops->clear = cw_clear; 399 ops->putcs = cw_putcs; 400 ops->clear_margins = cw_clear_margins; 401 ops->cursor = cw_cursor; 402 ops->update_start = cw_update_start; 403 } 404 EXPORT_SYMBOL(fbcon_rotate_cw); 405