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1/*2 * linux/drivers/video/console/fbcon_ud.c -- Software Rotation - 90 degrees3 *4 * Copyright (C) 2005 Antonino Daplas <adaplas @pol.net>5 *6 * This file is subject to the terms and conditions of the GNU General Public7 * License. See the file COPYING in the main directory of this archive for8 * 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 degrees23 */24 25static 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 48static 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, 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 65static 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, 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 83static 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 else105 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 114static 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, 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 else150 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 case167 it's a gain to check buf against NULL even though kfree() handles168 NULL pointers just fine */169 if (unlikely(buf))170 kfree(buf);171 172}173 174static 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 204static void cw_cursor(struct vc_data *vc, struct fb_info *info, bool enable,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, 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 ops->cursor_state.enable = enable && !use_sw;336 337 cursor.image.data = src;338 cursor.image.fg_color = ops->cursor_state.image.fg_color;339 cursor.image.bg_color = ops->cursor_state.image.bg_color;340 cursor.image.dx = ops->cursor_state.image.dx;341 cursor.image.dy = ops->cursor_state.image.dy;342 cursor.image.height = ops->cursor_state.image.height;343 cursor.image.width = ops->cursor_state.image.width;344 cursor.hot.x = ops->cursor_state.hot.x;345 cursor.hot.y = ops->cursor_state.hot.y;346 cursor.mask = ops->cursor_state.mask;347 cursor.enable = ops->cursor_state.enable;348 cursor.image.depth = 1;349 cursor.rop = ROP_XOR;350 351 if (info->fbops->fb_cursor)352 err = info->fbops->fb_cursor(info, &cursor);353 354 if (err)355 soft_cursor(info, &cursor);356 357 ops->cursor_reset = 0;358}359 360static int cw_update_start(struct fb_info *info)361{362 struct fbcon_ops *ops = info->fbcon_par;363 u32 vxres = GETVXRES(ops->p, info);364 u32 xoffset;365 int err;366 367 xoffset = vxres - (info->var.xres + ops->var.yoffset);368 ops->var.yoffset = ops->var.xoffset;369 ops->var.xoffset = xoffset;370 err = fb_pan_display(info, &ops->var);371 ops->var.xoffset = info->var.xoffset;372 ops->var.yoffset = info->var.yoffset;373 ops->var.vmode = info->var.vmode;374 return err;375}376 377void fbcon_rotate_cw(struct fbcon_ops *ops)378{379 ops->bmove = cw_bmove;380 ops->clear = cw_clear;381 ops->putcs = cw_putcs;382 ops->clear_margins = cw_clear_margins;383 ops->cursor = cw_cursor;384 ops->update_start = cw_update_start;385}386