Lines Matching refs:var
71 static int vfb_check_var(struct fb_var_screeninfo *var,
76 static int vfb_pan_display(struct fb_var_screeninfo *var,
111 * to hardware, it should only verify and adjust var.
113 * data from it to check this var.
116 static int vfb_check_var(struct fb_var_screeninfo *var,
126 if (var->vmode & FB_VMODE_CONUPDATE) {
127 var->vmode |= FB_VMODE_YWRAP;
128 var->xoffset = info->var.xoffset;
129 var->yoffset = info->var.yoffset;
135 if (!var->xres)
136 var->xres = 1;
137 if (!var->yres)
138 var->yres = 1;
139 if (var->xres > var->xres_virtual)
140 var->xres_virtual = var->xres;
141 if (var->yres > var->yres_virtual)
142 var->yres_virtual = var->yres;
143 if (var->bits_per_pixel <= 1)
144 var->bits_per_pixel = 1;
145 else if (var->bits_per_pixel <= 8)
146 var->bits_per_pixel = 8;
147 else if (var->bits_per_pixel <= 16)
148 var->bits_per_pixel = 16;
149 else if (var->bits_per_pixel <= 24)
150 var->bits_per_pixel = 24;
151 else if (var->bits_per_pixel <= 32)
152 var->bits_per_pixel = 32;
156 if (var->xres_virtual < var->xoffset + var->xres)
157 var->xres_virtual = var->xoffset + var->xres;
158 if (var->yres_virtual < var->yoffset + var->yres)
159 var->yres_virtual = var->yoffset + var->yres;
165 get_line_length(var->xres_virtual, var->bits_per_pixel);
166 if (line_length * var->yres_virtual > videomemorysize)
170 * Now that we checked it we alter var. The reason being is that the video
174 switch (var->bits_per_pixel) {
177 var->red.offset = 0;
178 var->red.length = 8;
179 var->green.offset = 0;
180 var->green.length = 8;
181 var->blue.offset = 0;
182 var->blue.length = 8;
183 var->transp.offset = 0;
184 var->transp.length = 0;
187 if (var->transp.length) {
188 var->red.offset = 0;
189 var->red.length = 5;
190 var->green.offset = 5;
191 var->green.length = 5;
192 var->blue.offset = 10;
193 var->blue.length = 5;
194 var->transp.offset = 15;
195 var->transp.length = 1;
197 var->red.offset = 0;
198 var->red.length = 5;
199 var->green.offset = 5;
200 var->green.length = 6;
201 var->blue.offset = 11;
202 var->blue.length = 5;
203 var->transp.offset = 0;
204 var->transp.length = 0;
208 var->red.offset = 0;
209 var->red.length = 8;
210 var->green.offset = 8;
211 var->green.length = 8;
212 var->blue.offset = 16;
213 var->blue.length = 8;
214 var->transp.offset = 0;
215 var->transp.length = 0;
218 var->red.offset = 0;
219 var->red.length = 8;
220 var->green.offset = 8;
221 var->green.length = 8;
222 var->blue.offset = 16;
223 var->blue.length = 8;
224 var->transp.offset = 24;
225 var->transp.length = 8;
228 var->red.msb_right = 0;
229 var->green.msb_right = 0;
230 var->blue.msb_right = 0;
231 var->transp.msb_right = 0;
242 switch (info->var.bits_per_pixel) {
256 info->fix.line_length = get_line_length(info->var.xres_virtual,
257 info->var.bits_per_pixel);
265 * entries in the var structure). Return != 0 for invalid regno.
278 if (info->var.grayscale) {
285 * var->{color}.offset contains start of bitfield
286 * var->{color}.length contains length of bitfield
292 * var->{color}.offset is 0 unless the palette index takes less than
295 * var->{color}.length is set so that 1 << length is the number of available
302 * var->{color}.offset contains start of bitfield
303 * var->{color}.length contains length of bitfield
312 red = CNVT_TOHW(red, info->var.red.length);
313 green = CNVT_TOHW(green, info->var.green.length);
314 blue = CNVT_TOHW(blue, info->var.blue.length);
315 transp = CNVT_TOHW(transp, info->var.transp.length);
333 v = (red << info->var.red.offset) |
334 (green << info->var.green.offset) |
335 (blue << info->var.blue.offset) |
336 (transp << info->var.transp.offset);
337 switch (info->var.bits_per_pixel) {
359 static int vfb_pan_display(struct fb_var_screeninfo *var,
362 if (var->vmode & FB_VMODE_YWRAP) {
363 if (var->yoffset >= info->var.yres_virtual ||
364 var->xoffset)
367 if (var->xoffset + info->var.xres > info->var.xres_virtual ||
368 var->yoffset + info->var.yres > info->var.yres_virtual)
371 info->var.xoffset = var->xoffset;
372 info->var.yoffset = var->yoffset;
373 if (var->vmode & FB_VMODE_YWRAP)
374 info->var.vmode |= FB_VMODE_YWRAP;
376 info->var.vmode &= ~FB_VMODE_YWRAP;
445 if (!fb_find_mode(&info->var, info, mode_option,