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authorAntonino A. Daplas <adaplas@gmail.com>2005-11-07 01:00:35 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-07 07:53:50 -0800
commitc465e05a03209651078b95686158648fd7ed84c5 (patch)
treee1119586a567a9a6a5ad9bda43d3438772ecf5a4 /drivers/video/console
parente764a20196f4e1b497a42fdc6e9d254e7ec290f2 (diff)
[PATCH] fbcon/fbdev: Move softcursor out of fbdev to fbcon
According to Jon Smirl, filling in the field fb_cursor with soft_cursor for drivers that do not support hardware cursors is redundant. The soft_cursor function is usable by all drivers because it is just a wrapper around fb_imageblit. And because soft_cursor is an fbcon-specific hook, the file is moved to the console directory. Thus, drivers that do not support hardware cursors can leave the fb_cursor field blank. For drivers that do, they can fill up this field with their own version. The end result is a smaller code size. And if the framebuffer console is not loaded, module/kernel size is also reduced because the soft_cursor module will also not be loaded. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/video/console')
-rw-r--r--drivers/video/console/Makefile2
-rw-r--r--drivers/video/console/bitblit.c7
-rw-r--r--drivers/video/console/fbcon.h2
-rw-r--r--drivers/video/console/softcursor.c72
4 files changed, 80 insertions, 3 deletions
diff --git a/drivers/video/console/Makefile b/drivers/video/console/Makefile
index 42c7b8dcd220..71b4b626e328 100644
--- a/drivers/video/console/Makefile
+++ b/drivers/video/console/Makefile
@@ -26,7 +26,7 @@ obj-$(CONFIG_PROM_CONSOLE) += promcon.o promcon_tbl.o
obj-$(CONFIG_STI_CONSOLE) += sticon.o sticore.o font.o
obj-$(CONFIG_VGA_CONSOLE) += vgacon.o
obj-$(CONFIG_MDA_CONSOLE) += mdacon.o
-obj-$(CONFIG_FRAMEBUFFER_CONSOLE) += fbcon.o bitblit.o font.o
+obj-$(CONFIG_FRAMEBUFFER_CONSOLE) += fbcon.o bitblit.o font.o softcursor.o
ifeq ($(CONFIG_FB_TILEBLITTING),y)
obj-$(CONFIG_FRAMEBUFFER_CONSOLE) += tileblit.o
endif
diff --git a/drivers/video/console/bitblit.c b/drivers/video/console/bitblit.c
index 9f70e512b88b..67857b3cfc8b 100644
--- a/drivers/video/console/bitblit.c
+++ b/drivers/video/console/bitblit.c
@@ -272,6 +272,7 @@ static void bit_cursor(struct vc_data *vc, struct fb_info *info,
int w = (vc->vc_font.width + 7) >> 3, c;
int y = real_y(p, vc->vc_y);
int attribute, use_sw = (vc->vc_cursor_type & 0x10);
+ int err = 1;
char *src;
cursor.set = 0;
@@ -408,7 +409,11 @@ static void bit_cursor(struct vc_data *vc, struct fb_info *info,
cursor.image.depth = 1;
cursor.rop = ROP_XOR;
- info->fbops->fb_cursor(info, &cursor);
+ if (info->fbops->fb_cursor)
+ err = info->fbops->fb_cursor(info, &cursor);
+
+ if (err)
+ soft_cursor(info, &cursor);
ops->cursor_reset = 0;
}
diff --git a/drivers/video/console/fbcon.h b/drivers/video/console/fbcon.h
index 0738cd62def2..b68e0e2c2d16 100644
--- a/drivers/video/console/fbcon.h
+++ b/drivers/video/console/fbcon.h
@@ -167,5 +167,5 @@ extern void fbcon_set_tileops(struct vc_data *vc, struct fb_info *info,
struct display *p, struct fbcon_ops *ops);
#endif
extern void fbcon_set_bitops(struct fbcon_ops *ops);
-
+extern int soft_cursor(struct fb_info *info, struct fb_cursor *cursor);
#endif /* _VIDEO_FBCON_H */
diff --git a/drivers/video/console/softcursor.c b/drivers/video/console/softcursor.c
new file mode 100644
index 000000000000..8529bf08db28
--- /dev/null
+++ b/drivers/video/console/softcursor.c
@@ -0,0 +1,72 @@
+/*
+ * linux/drivers/video/softcursor.c -- Generic software cursor for frame buffer devices
+ *
+ * Created 14 Nov 2002 by James Simmons
+ *
+ * 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/module.h>
+#include <linux/string.h>
+#include <linux/tty.h>
+#include <linux/fb.h>
+#include <linux/slab.h>
+
+#include <asm/uaccess.h>
+#include <asm/io.h>
+
+int soft_cursor(struct fb_info *info, struct fb_cursor *cursor)
+{
+ unsigned int scan_align = info->pixmap.scan_align - 1;
+ unsigned int buf_align = info->pixmap.buf_align - 1;
+ unsigned int i, size, dsize, s_pitch, d_pitch;
+ struct fb_image *image;
+ u8 *dst, *src;
+
+ if (info->state != FBINFO_STATE_RUNNING)
+ return 0;
+
+ s_pitch = (cursor->image.width + 7) >> 3;
+ dsize = s_pitch * cursor->image.height;
+
+ src = kmalloc(dsize + sizeof(struct fb_image), GFP_ATOMIC);
+ if (!src)
+ return -ENOMEM;
+
+ image = (struct fb_image *) (src + dsize);
+ *image = cursor->image;
+ d_pitch = (s_pitch + scan_align) & ~scan_align;
+
+ size = d_pitch * image->height + buf_align;
+ size &= ~buf_align;
+ dst = fb_get_buffer_offset(info, &info->pixmap, size);
+
+ if (cursor->enable) {
+ switch (cursor->rop) {
+ case ROP_XOR:
+ for (i = 0; i < dsize; i++)
+ src[i] = image->data[i] ^ cursor->mask[i];
+ break;
+ case ROP_COPY:
+ default:
+ for (i = 0; i < dsize; i++)
+ src[i] = image->data[i] & cursor->mask[i];
+ break;
+ }
+ } else
+ memcpy(src, image->data, dsize);
+
+ fb_pad_aligned_buffer(dst, d_pitch, src, s_pitch, image->height);
+ image->data = dst;
+ info->fbops->fb_imageblit(info, image);
+ kfree(src);
+ return 0;
+}
+
+EXPORT_SYMBOL(soft_cursor);
+
+MODULE_AUTHOR("James Simmons <jsimmons@users.sf.net>");
+MODULE_DESCRIPTION("Generic software cursor");
+MODULE_LICENSE("GPL");