video/fbdev/grvga.c

77 static int grvga_check_var(struct fb_var_screeninfo *var,
83 	if (!var->xres)
84 		var->xres = 1;
85 	if (!var->yres)
86 		var->yres = 1;
87 	if (var->bits_per_pixel <= 8)
88 		var->bits_per_pixel = 8;
89 	else if (var->bits_per_pixel <= 16)
90 		var->bits_per_pixel = 16;
91 	else if (var->bits_per_pixel <= 24)
92 		var->bits_per_pixel = 24;
93 	else if (var->bits_per_pixel <= 32)
94 		var->bits_per_pixel = 32;
98 	var->xres_virtual = var->xres;
99 	var->yres_virtual = 2*var->yres;
102 		if ((var->yres_virtual*var->xres_virtual*var->bits_per_pixel/8) > info->fix.smem_len)
108 		if (var->pixclock == par->regs->clk_vector[i])
116 	switch (info->var.bits_per_pixel) {
118 		var->red   = (struct fb_bitfield) {0, 8, 0};      /* offset, length, msb-right */
119 		var->green = (struct fb_bitfield) {0, 8, 0};
120 		var->blue  = (struct fb_bitfield) {0, 8, 0};
121 		var->transp = (struct fb_bitfield) {0, 0, 0};
124 		var->red   = (struct fb_bitfield) {11, 5, 0};
125 		var->green = (struct fb_bitfield) {5, 6, 0};
126 		var->blue  = (struct fb_bitfield) {0, 5, 0};
127 		var->transp = (struct fb_bitfield) {0, 0, 0};
131 		var->red   = (struct fb_bitfield) {16, 8, 0};
132 		var->green = (struct fb_bitfield) {8, 8, 0};
133 		var->blue  = (struct fb_bitfield) {0, 8, 0};
134 		var->transp = (struct fb_bitfield) {24, 8, 0};
149 	__raw_writel(((info->var.yres - 1) << 16) | (info->var.xres - 1),
152 	__raw_writel((info->var.lower_margin << 16) | (info->var.right_margin),
155 	__raw_writel((info->var.vsync_len << 16) | (info->var.hsync_len),
158 	__raw_writel(((info->var.yres + info->var.lower_margin + info->var.upper_margin + info->var.vsync_len - 1) << 16) |
159 		     (info->var.xres + info->var.right_margin + info->var.left_margin + info->var.hsync_len - 1),
162 	switch (info->var.bits_per_pixel) {
183 	info->fix.line_length = (info->var.xres_virtual*info->var.bits_per_pixel)/8;
195 	if (info->var.grayscale) {
204 	red    = CNVT_TOHW(red,   info->var.red.length);
205 	green  = CNVT_TOHW(green, info->var.green.length);
206 	blue   = CNVT_TOHW(blue,  info->var.blue.length);
207 	transp = CNVT_TOHW(transp, info->var.transp.length);
223 		v =     (red    << info->var.red.offset)   |
224 			(green  << info->var.green.offset) |
225 			(blue   << info->var.blue.offset)  |
226 			(transp << info->var.transp.offset);
233 static int grvga_pan_display(struct fb_var_screeninfo *var,
240 	if (var->xoffset != 0)
243 	base_addr = fix->smem_start + (var->yoffset * fix->line_length);
360 			if (grvga_parse_custom(this_opt, &info->var) < 0) {
405 		retval = fb_find_mode(&info->var, info, mode_opt,
414 		grvga_mem_size = info->var.xres_virtual * info->var.yres_virtual * info->var.bits_per_pixel/8;
473 		 info->node, info->var.xres, info->var.yres, info->var.bits_per_pixel,