Antonino A. Daplas | dbcbfe1 | 2005-11-08 21:39:12 -0800 | [diff] [blame] | 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/config.h> |
| 12 | #include <linux/module.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 inline 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, t = 0, 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 | t = c; |
| 44 | } |
| 45 | } |
| 46 | } |
| 47 | |
| 48 | |
| 49 | static void cw_bmove(struct vc_data *vc, struct fb_info *info, int sy, |
| 50 | int sx, int dy, int dx, int height, int width) |
| 51 | { |
Antonino A. Daplas | ab76720 | 2005-11-13 16:06:32 -0800 | [diff] [blame] | 52 | struct fbcon_ops *ops = info->fbcon_par; |
Antonino A. Daplas | dbcbfe1 | 2005-11-08 21:39:12 -0800 | [diff] [blame] | 53 | struct fb_copyarea area; |
Antonino A. Daplas | ab76720 | 2005-11-13 16:06:32 -0800 | [diff] [blame] | 54 | u32 vxres = GETVXRES(ops->p->scrollmode, info); |
Antonino A. Daplas | dbcbfe1 | 2005-11-08 21:39:12 -0800 | [diff] [blame] | 55 | |
| 56 | area.sx = vxres - ((sy + height) * vc->vc_font.height); |
| 57 | area.sy = sx * vc->vc_font.width; |
| 58 | area.dx = vxres - ((dy + height) * vc->vc_font.height); |
| 59 | area.dy = dx * vc->vc_font.width; |
| 60 | area.width = height * vc->vc_font.height; |
| 61 | area.height = width * vc->vc_font.width; |
| 62 | |
| 63 | info->fbops->fb_copyarea(info, &area); |
| 64 | } |
| 65 | |
| 66 | static void cw_clear(struct vc_data *vc, struct fb_info *info, int sy, |
| 67 | int sx, int height, int width) |
| 68 | { |
Antonino A. Daplas | ab76720 | 2005-11-13 16:06:32 -0800 | [diff] [blame] | 69 | struct fbcon_ops *ops = info->fbcon_par; |
Antonino A. Daplas | dbcbfe1 | 2005-11-08 21:39:12 -0800 | [diff] [blame] | 70 | struct fb_fillrect region; |
| 71 | int bgshift = (vc->vc_hi_font_mask) ? 13 : 12; |
Antonino A. Daplas | ab76720 | 2005-11-13 16:06:32 -0800 | [diff] [blame] | 72 | u32 vxres = GETVXRES(ops->p->scrollmode, info); |
Antonino A. Daplas | dbcbfe1 | 2005-11-08 21:39:12 -0800 | [diff] [blame] | 73 | |
| 74 | region.color = attr_bgcol_ec(bgshift,vc); |
| 75 | region.dx = vxres - ((sy + height) * vc->vc_font.height); |
| 76 | region.dy = sx * vc->vc_font.width; |
| 77 | region.height = width * vc->vc_font.width; |
| 78 | region.width = height * vc->vc_font.height; |
| 79 | region.rop = ROP_COPY; |
| 80 | |
| 81 | info->fbops->fb_fillrect(info, ®ion); |
| 82 | } |
| 83 | |
| 84 | static inline void cw_putcs_aligned(struct vc_data *vc, struct fb_info *info, |
| 85 | const u16 *s, u32 attr, u32 cnt, |
| 86 | u32 d_pitch, u32 s_pitch, u32 cellsize, |
| 87 | struct fb_image *image, u8 *buf, u8 *dst) |
| 88 | { |
| 89 | struct fbcon_ops *ops = info->fbcon_par; |
| 90 | u16 charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; |
| 91 | u32 idx = (vc->vc_font.height + 7) >> 3; |
| 92 | u8 *src; |
| 93 | |
| 94 | while (cnt--) { |
| 95 | src = ops->fontbuffer + (scr_readw(s++) & charmask)*cellsize; |
| 96 | |
| 97 | if (attr) { |
| 98 | cw_update_attr(buf, src, attr, vc); |
| 99 | src = buf; |
| 100 | } |
| 101 | |
| 102 | if (likely(idx == 1)) |
| 103 | __fb_pad_aligned_buffer(dst, d_pitch, src, idx, |
| 104 | vc->vc_font.width); |
| 105 | else |
| 106 | fb_pad_aligned_buffer(dst, d_pitch, src, idx, |
| 107 | vc->vc_font.width); |
| 108 | |
| 109 | dst += d_pitch * vc->vc_font.width; |
| 110 | } |
| 111 | |
| 112 | info->fbops->fb_imageblit(info, image); |
| 113 | } |
| 114 | |
| 115 | static void cw_putcs(struct vc_data *vc, struct fb_info *info, |
| 116 | const unsigned short *s, int count, int yy, int xx, |
| 117 | int fg, int bg) |
| 118 | { |
| 119 | struct fb_image image; |
Antonino A. Daplas | dbcbfe1 | 2005-11-08 21:39:12 -0800 | [diff] [blame] | 120 | struct fbcon_ops *ops = info->fbcon_par; |
| 121 | u32 width = (vc->vc_font.height + 7)/8; |
| 122 | u32 cellsize = width * vc->vc_font.width; |
| 123 | u32 maxcnt = info->pixmap.size/cellsize; |
| 124 | u32 scan_align = info->pixmap.scan_align - 1; |
| 125 | u32 buf_align = info->pixmap.buf_align - 1; |
| 126 | u32 cnt, pitch, size; |
| 127 | u32 attribute = get_attribute(info, scr_readw(s)); |
| 128 | u8 *dst, *buf = NULL; |
Antonino A. Daplas | ab76720 | 2005-11-13 16:06:32 -0800 | [diff] [blame] | 129 | u32 vxres = GETVXRES(ops->p->scrollmode, info); |
Antonino A. Daplas | dbcbfe1 | 2005-11-08 21:39:12 -0800 | [diff] [blame] | 130 | |
| 131 | if (!ops->fontbuffer) |
| 132 | return; |
| 133 | |
| 134 | image.fg_color = fg; |
| 135 | image.bg_color = bg; |
| 136 | image.dx = vxres - ((yy + 1) * vc->vc_font.height); |
| 137 | image.dy = xx * vc->vc_font.width; |
| 138 | image.width = vc->vc_font.height; |
| 139 | image.depth = 1; |
| 140 | |
| 141 | if (attribute) { |
| 142 | buf = kmalloc(cellsize, GFP_KERNEL); |
| 143 | if (!buf) |
| 144 | return; |
| 145 | } |
| 146 | |
| 147 | while (count) { |
| 148 | if (count > maxcnt) |
| 149 | cnt = maxcnt; |
| 150 | else |
| 151 | cnt = count; |
| 152 | |
| 153 | image.height = vc->vc_font.width * cnt; |
| 154 | pitch = ((image.width + 7) >> 3) + scan_align; |
| 155 | pitch &= ~scan_align; |
| 156 | size = pitch * image.height + buf_align; |
| 157 | size &= ~buf_align; |
| 158 | dst = fb_get_buffer_offset(info, &info->pixmap, size); |
| 159 | image.data = dst; |
| 160 | cw_putcs_aligned(vc, info, s, attribute, cnt, pitch, |
| 161 | width, cellsize, &image, buf, dst); |
| 162 | image.dy += image.height; |
| 163 | count -= cnt; |
| 164 | s += cnt; |
| 165 | } |
| 166 | |
| 167 | /* buf is always NULL except when in monochrome mode, so in this case |
| 168 | it's a gain to check buf against NULL even though kfree() handles |
| 169 | NULL pointers just fine */ |
| 170 | if (unlikely(buf)) |
| 171 | kfree(buf); |
| 172 | |
| 173 | } |
| 174 | |
| 175 | static void cw_clear_margins(struct vc_data *vc, struct fb_info *info, |
| 176 | int bottom_only) |
| 177 | { |
| 178 | unsigned int cw = vc->vc_font.width; |
| 179 | unsigned int ch = vc->vc_font.height; |
| 180 | unsigned int rw = info->var.yres - (vc->vc_cols*cw); |
| 181 | unsigned int bh = info->var.xres - (vc->vc_rows*ch); |
| 182 | unsigned int rs = info->var.yres - rw; |
| 183 | struct fb_fillrect region; |
| 184 | int bgshift = (vc->vc_hi_font_mask) ? 13 : 12; |
| 185 | |
| 186 | region.color = attr_bgcol_ec(bgshift,vc); |
| 187 | region.rop = ROP_COPY; |
| 188 | |
| 189 | if (rw && !bottom_only) { |
| 190 | region.dx = 0; |
| 191 | region.dy = info->var.yoffset + rs; |
| 192 | region.height = rw; |
| 193 | region.width = info->var.xres_virtual; |
| 194 | info->fbops->fb_fillrect(info, ®ion); |
| 195 | } |
| 196 | |
| 197 | if (bh) { |
| 198 | region.dx = info->var.xoffset; |
| 199 | region.dy = info->var.yoffset; |
| 200 | region.height = info->var.yres; |
| 201 | region.width = bh; |
| 202 | info->fbops->fb_fillrect(info, ®ion); |
| 203 | } |
| 204 | } |
| 205 | |
| 206 | static void cw_cursor(struct vc_data *vc, struct fb_info *info, |
| 207 | struct display *p, int mode, int softback_lines, |
| 208 | int fg, int bg) |
| 209 | { |
| 210 | struct fb_cursor cursor; |
| 211 | struct fbcon_ops *ops = (struct fbcon_ops *) info->fbcon_par; |
| 212 | unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff; |
| 213 | int w = (vc->vc_font.height + 7) >> 3, c; |
| 214 | int y = real_y(p, vc->vc_y); |
| 215 | int attribute, use_sw = (vc->vc_cursor_type & 0x10); |
| 216 | int err = 1, dx, dy; |
| 217 | char *src; |
| 218 | u32 vxres = GETVXRES(p->scrollmode, info); |
| 219 | |
| 220 | if (!ops->fontbuffer) |
| 221 | return; |
| 222 | |
| 223 | cursor.set = 0; |
| 224 | |
| 225 | if (softback_lines) { |
| 226 | if (y + softback_lines >= vc->vc_rows) { |
| 227 | mode = CM_ERASE; |
| 228 | ops->cursor_flash = 0; |
| 229 | return; |
| 230 | } else |
| 231 | y += softback_lines; |
| 232 | } |
| 233 | |
| 234 | c = scr_readw((u16 *) vc->vc_pos); |
| 235 | attribute = get_attribute(info, c); |
| 236 | src = ops->fontbuffer + ((c & charmask) * (w * vc->vc_font.width)); |
| 237 | |
| 238 | if (ops->cursor_state.image.data != src || |
| 239 | ops->cursor_reset) { |
| 240 | ops->cursor_state.image.data = src; |
| 241 | cursor.set |= FB_CUR_SETIMAGE; |
| 242 | } |
| 243 | |
| 244 | if (attribute) { |
| 245 | u8 *dst; |
| 246 | |
| 247 | dst = kmalloc(w * vc->vc_font.width, GFP_ATOMIC); |
| 248 | if (!dst) |
| 249 | return; |
| 250 | kfree(ops->cursor_data); |
| 251 | ops->cursor_data = dst; |
| 252 | cw_update_attr(dst, src, attribute, vc); |
| 253 | src = dst; |
| 254 | } |
| 255 | |
| 256 | if (ops->cursor_state.image.fg_color != fg || |
| 257 | ops->cursor_state.image.bg_color != bg || |
| 258 | ops->cursor_reset) { |
| 259 | ops->cursor_state.image.fg_color = fg; |
| 260 | ops->cursor_state.image.bg_color = bg; |
| 261 | cursor.set |= FB_CUR_SETCMAP; |
| 262 | } |
| 263 | |
| 264 | if (ops->cursor_state.image.height != vc->vc_font.width || |
| 265 | ops->cursor_state.image.width != vc->vc_font.height || |
| 266 | ops->cursor_reset) { |
| 267 | ops->cursor_state.image.height = vc->vc_font.width; |
| 268 | ops->cursor_state.image.width = vc->vc_font.height; |
| 269 | cursor.set |= FB_CUR_SETSIZE; |
| 270 | } |
| 271 | |
| 272 | dx = vxres - ((y * vc->vc_font.height) + vc->vc_font.height); |
| 273 | dy = vc->vc_x * vc->vc_font.width; |
| 274 | |
| 275 | if (ops->cursor_state.image.dx != dx || |
| 276 | ops->cursor_state.image.dy != dy || |
| 277 | ops->cursor_reset) { |
| 278 | ops->cursor_state.image.dx = dx; |
| 279 | ops->cursor_state.image.dy = dy; |
| 280 | cursor.set |= FB_CUR_SETPOS; |
| 281 | } |
| 282 | |
| 283 | if (ops->cursor_state.hot.x || ops->cursor_state.hot.y || |
| 284 | ops->cursor_reset) { |
| 285 | ops->cursor_state.hot.x = cursor.hot.y = 0; |
| 286 | cursor.set |= FB_CUR_SETHOT; |
| 287 | } |
| 288 | |
| 289 | if (cursor.set & FB_CUR_SETSIZE || |
| 290 | vc->vc_cursor_type != p->cursor_shape || |
| 291 | ops->cursor_state.mask == NULL || |
| 292 | ops->cursor_reset) { |
| 293 | char *tmp, *mask = kmalloc(w*vc->vc_font.width, GFP_ATOMIC); |
| 294 | int cur_height, size, i = 0; |
| 295 | int width = (vc->vc_font.width + 7)/8; |
| 296 | |
| 297 | if (!mask) |
| 298 | return; |
| 299 | |
| 300 | tmp = kmalloc(width * vc->vc_font.height, GFP_ATOMIC); |
| 301 | |
| 302 | if (!tmp) { |
| 303 | kfree(mask); |
| 304 | return; |
| 305 | } |
| 306 | |
| 307 | kfree(ops->cursor_state.mask); |
| 308 | ops->cursor_state.mask = mask; |
| 309 | |
| 310 | p->cursor_shape = vc->vc_cursor_type; |
| 311 | cursor.set |= FB_CUR_SETSHAPE; |
| 312 | |
| 313 | switch (p->cursor_shape & CUR_HWMASK) { |
| 314 | case CUR_NONE: |
| 315 | cur_height = 0; |
| 316 | break; |
| 317 | case CUR_UNDERLINE: |
| 318 | cur_height = (vc->vc_font.height < 10) ? 1 : 2; |
| 319 | break; |
| 320 | case CUR_LOWER_THIRD: |
| 321 | cur_height = vc->vc_font.height/3; |
| 322 | break; |
| 323 | case CUR_LOWER_HALF: |
| 324 | cur_height = vc->vc_font.height >> 1; |
| 325 | break; |
| 326 | case CUR_TWO_THIRDS: |
| 327 | cur_height = (vc->vc_font.height << 1)/3; |
| 328 | break; |
| 329 | case CUR_BLOCK: |
| 330 | default: |
| 331 | cur_height = vc->vc_font.height; |
| 332 | break; |
| 333 | } |
| 334 | |
| 335 | size = (vc->vc_font.height - cur_height) * width; |
| 336 | while (size--) |
| 337 | tmp[i++] = 0; |
| 338 | size = cur_height * width; |
| 339 | while (size--) |
| 340 | tmp[i++] = 0xff; |
| 341 | memset(mask, 0, w * vc->vc_font.width); |
| 342 | rotate_cw(tmp, mask, vc->vc_font.width, vc->vc_font.height); |
| 343 | kfree(tmp); |
| 344 | } |
| 345 | |
| 346 | switch (mode) { |
| 347 | case CM_ERASE: |
| 348 | ops->cursor_state.enable = 0; |
| 349 | break; |
| 350 | case CM_DRAW: |
| 351 | case CM_MOVE: |
| 352 | default: |
| 353 | ops->cursor_state.enable = (use_sw) ? 0 : 1; |
| 354 | break; |
| 355 | } |
| 356 | |
| 357 | cursor.image.data = src; |
| 358 | cursor.image.fg_color = ops->cursor_state.image.fg_color; |
| 359 | cursor.image.bg_color = ops->cursor_state.image.bg_color; |
| 360 | cursor.image.dx = ops->cursor_state.image.dx; |
| 361 | cursor.image.dy = ops->cursor_state.image.dy; |
| 362 | cursor.image.height = ops->cursor_state.image.height; |
| 363 | cursor.image.width = ops->cursor_state.image.width; |
| 364 | cursor.hot.x = ops->cursor_state.hot.x; |
| 365 | cursor.hot.y = ops->cursor_state.hot.y; |
| 366 | cursor.mask = ops->cursor_state.mask; |
| 367 | cursor.enable = ops->cursor_state.enable; |
| 368 | cursor.image.depth = 1; |
| 369 | cursor.rop = ROP_XOR; |
| 370 | |
| 371 | if (info->fbops->fb_cursor) |
| 372 | err = info->fbops->fb_cursor(info, &cursor); |
| 373 | |
| 374 | if (err) |
| 375 | soft_cursor(info, &cursor); |
| 376 | |
| 377 | ops->cursor_reset = 0; |
| 378 | } |
| 379 | |
| 380 | int cw_update_start(struct fb_info *info) |
| 381 | { |
| 382 | struct fbcon_ops *ops = info->fbcon_par; |
Antonino A. Daplas | ab76720 | 2005-11-13 16:06:32 -0800 | [diff] [blame] | 383 | u32 vxres = GETVXRES(ops->p->scrollmode, info); |
Antonino A. Daplas | dbcbfe1 | 2005-11-08 21:39:12 -0800 | [diff] [blame] | 384 | u32 xoffset; |
| 385 | int err; |
| 386 | |
| 387 | xoffset = vxres - (info->var.xres + ops->var.yoffset); |
| 388 | ops->var.yoffset = ops->var.xoffset; |
| 389 | ops->var.xoffset = xoffset; |
| 390 | err = fb_pan_display(info, &ops->var); |
| 391 | ops->var.xoffset = info->var.xoffset; |
| 392 | ops->var.yoffset = info->var.yoffset; |
| 393 | ops->var.vmode = info->var.vmode; |
| 394 | return err; |
| 395 | } |
| 396 | |
| 397 | void fbcon_rotate_cw(struct fbcon_ops *ops) |
| 398 | { |
| 399 | ops->bmove = cw_bmove; |
| 400 | ops->clear = cw_clear; |
| 401 | ops->putcs = cw_putcs; |
| 402 | ops->clear_margins = cw_clear_margins; |
| 403 | ops->cursor = cw_cursor; |
| 404 | ops->update_start = cw_update_start; |
| 405 | } |
| 406 | EXPORT_SYMBOL(fbcon_rotate_cw); |
| 407 | |
| 408 | MODULE_AUTHOR("Antonino Daplas <adaplas@pol.net>"); |
| 409 | MODULE_DESCRIPTION("Console Rotation (90 degrees) Support"); |
| 410 | MODULE_LICENSE("GPL"); |