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, 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, 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(dst: buf, src, attribute: attr, vc); |
98 | src = buf; |
99 | } |
100 | |
101 | if (likely(idx == 1)) |
102 | __fb_pad_aligned_buffer(dst, d_pitch, src, s_pitch: idx, |
103 | height: vc->vc_font.width); |
104 | else |
105 | fb_pad_aligned_buffer(dst, d_pitch, src, s_pitch: idx, |
106 | height: 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, 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(size: 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, buf: &info->pixmap, size); |
158 | image.data = dst; |
159 | cw_putcs_aligned(vc, info, s, attr: attribute, cnt, d_pitch: pitch, |
160 | s_pitch: width, cellsize, image: &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(objp: 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, 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(p: ops->p, ypos: 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(n: w, size: vc->vc_font.width, GFP_ATOMIC); |
236 | if (!dst) |
237 | return; |
238 | kfree(objp: 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(n: w, size: 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(n: width, size: vc->vc_font.height, GFP_ATOMIC); |
290 | |
291 | if (!tmp) { |
292 | kfree(objp: mask); |
293 | return; |
294 | } |
295 | |
296 | kfree(objp: 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(in: tmp, out: mask, width: vc->vc_font.width, height: vc->vc_font.height); |
332 | kfree(objp: 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: &cursor); |
356 | |
357 | ops->cursor_reset = 0; |
358 | } |
359 | |
360 | static 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, var: &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 | |
377 | void 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 | |