summaryrefslogtreecommitdiffstats
path: root/drivers/video/fbdev/atafb_mfb.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/video/fbdev/atafb_mfb.c
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/video/fbdev/atafb_mfb.c')
-rw-r--r--drivers/video/fbdev/atafb_mfb.c89
1 files changed, 89 insertions, 0 deletions
diff --git a/drivers/video/fbdev/atafb_mfb.c b/drivers/video/fbdev/atafb_mfb.c
new file mode 100644
index 0000000000..384fd3e4d3
--- /dev/null
+++ b/drivers/video/fbdev/atafb_mfb.c
@@ -0,0 +1,89 @@
+/*
+ * linux/drivers/video/mfb.c -- Low level frame buffer operations for
+ * monochrome
+ *
+ * Created 5 Apr 1997 by Geert Uytterhoeven
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive for
+ * more details.
+ */
+
+#include <linux/string.h>
+#include <linux/fb.h>
+
+#include "atafb.h"
+#include "atafb_utils.h"
+
+
+ /*
+ * Monochrome
+ */
+
+void atafb_mfb_copyarea(struct fb_info *info, u_long next_line,
+ int sy, int sx, int dy, int dx,
+ int height, int width)
+{
+ u8 *src, *dest;
+ u_int rows;
+
+ if (sx == 0 && dx == 0 && width == next_line) {
+ src = (u8 *)info->screen_base + sy * (width >> 3);
+ dest = (u8 *)info->screen_base + dy * (width >> 3);
+ fb_memmove(dest, src, height * (width >> 3));
+ } else if (dy <= sy) {
+ src = (u8 *)info->screen_base + sy * next_line + (sx >> 3);
+ dest = (u8 *)info->screen_base + dy * next_line + (dx >> 3);
+ for (rows = height; rows--;) {
+ fb_memmove(dest, src, width >> 3);
+ src += next_line;
+ dest += next_line;
+ }
+ } else {
+ src = (u8 *)info->screen_base + (sy + height - 1) * next_line + (sx >> 3);
+ dest = (u8 *)info->screen_base + (dy + height - 1) * next_line + (dx >> 3);
+ for (rows = height; rows--;) {
+ fb_memmove(dest, src, width >> 3);
+ src -= next_line;
+ dest -= next_line;
+ }
+ }
+}
+
+void atafb_mfb_fillrect(struct fb_info *info, u_long next_line, u32 color,
+ int sy, int sx, int height, int width)
+{
+ u8 *dest;
+ u_int rows;
+
+ dest = (u8 *)info->screen_base + sy * next_line + (sx >> 3);
+
+ if (sx == 0 && width == next_line) {
+ if (color)
+ fb_memset255(dest, height * (width >> 3));
+ else
+ fb_memclear(dest, height * (width >> 3));
+ } else {
+ for (rows = height; rows--; dest += next_line) {
+ if (color)
+ fb_memset255(dest, width >> 3);
+ else
+ fb_memclear_small(dest, width >> 3);
+ }
+ }
+}
+
+void atafb_mfb_linefill(struct fb_info *info, u_long next_line,
+ int dy, int dx, u32 width,
+ const u8 *data, u32 bgcolor, u32 fgcolor)
+{
+ u8 *dest;
+ u_int rows;
+
+ dest = (u8 *)info->screen_base + dy * next_line + (dx >> 3);
+
+ for (rows = width / 8; rows--; /* check margins */ ) {
+ // use fast_memmove or fb_memmove
+ *dest++ = *data++;
+ }
+}