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Subject[PATCH v3 01/11] fbcon: move update_attr() into separate source file
Date
If we want to use update_attr() independently from fbcon, we need to split
it off from bitblit.c and fbcon.h. Therefore, introduce a new header and
source file (fbdraw.[ch]) which does not depende on vc_* and fbcon_*
structures in any way.

This does not introduce any new code nor does it make the paths deeper,
it simply splits the function off.

The other update_attr() functions (inside the rotation sources) seem
similar but are significantly different and I haven't found a way to merge
them efficiently (which is probably the reason why they are split off
now). Furthermore, I do not intend to use them in the coming code so there
is no need to split them off.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
---
drivers/video/console/Makefile | 3 ++-
drivers/video/console/bitblit.c | 26 +++--------------------
drivers/video/console/fbcon.h | 5 +----
drivers/video/console/fbdraw.c | 46 +++++++++++++++++++++++++++++++++++++++++
drivers/video/console/fbdraw.h | 26 +++++++++++++++++++++++
5 files changed, 78 insertions(+), 28 deletions(-)
create mode 100644 drivers/video/console/fbdraw.c
create mode 100644 drivers/video/console/fbdraw.h

diff --git a/drivers/video/console/Makefile b/drivers/video/console/Makefile
index a862e91..9a52226 100644
--- a/drivers/video/console/Makefile
+++ b/drivers/video/console/Makefile
@@ -25,7 +25,8 @@ obj-$(CONFIG_SGI_NEWPORT_CONSOLE) += newport_con.o font.o
obj-$(CONFIG_STI_CONSOLE) += sticon.o sticore.o font.o
obj-$(CONFIG_VGA_CONSOLE) += vgacon.o
obj-$(CONFIG_MDA_CONSOLE) += mdacon.o
-obj-$(CONFIG_FRAMEBUFFER_CONSOLE) += fbcon.o bitblit.o font.o softcursor.o
+obj-$(CONFIG_FRAMEBUFFER_CONSOLE) += fbcon.o bitblit.o font.o softcursor.o \
+ fbdraw.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 28b1a83..6ec2905 100644
--- a/drivers/video/console/bitblit.c
+++ b/drivers/video/console/bitblit.c
@@ -22,26 +22,6 @@
/*
* Accelerated handlers.
*/
-static void update_attr(u8 *dst, u8 *src, int attribute,
- struct vc_data *vc)
-{
- int i, offset = (vc->vc_font.height < 10) ? 1 : 2;
- int width = DIV_ROUND_UP(vc->vc_font.width, 8);
- unsigned int cellsize = vc->vc_font.height * width;
- u8 c;
-
- offset = cellsize - (offset * width);
- for (i = 0; i < cellsize; i++) {
- c = src[i];
- if (attribute & FBCON_ATTRIBUTE_UNDERLINE && i >= offset)
- c = 0xff;
- if (attribute & FBCON_ATTRIBUTE_BOLD)
- c |= c >> 1;
- if (attribute & FBCON_ATTRIBUTE_REVERSE)
- c = ~c;
- dst[i] = c;
- }
-}

static void bit_bmove(struct vc_data *vc, struct fb_info *info, int sy,
int sx, int dy, int dx, int height, int width)
@@ -88,7 +68,7 @@ static inline void bit_putcs_aligned(struct vc_data *vc, struct fb_info *info,
charmask)*cellsize;

if (attr) {
- update_attr(buf, src, attr, vc);
+ fbdraw_update_attr(buf, src, attr, &vc->vc_font);
src = buf;
}

@@ -123,7 +103,7 @@ static inline void bit_putcs_unaligned(struct vc_data *vc,
charmask)*cellsize;

if (attr) {
- update_attr(buf, src, attr, vc);
+ fbdraw_update_attr(buf, src, attr, &vc->vc_font);
src = buf;
}

@@ -275,7 +255,7 @@ static void bit_cursor(struct vc_data *vc, struct fb_info *info, int mode,
return;
kfree(ops->cursor_data);
ops->cursor_data = dst;
- update_attr(dst, src, attribute, vc);
+ fbdraw_update_attr(dst, src, attribute, &vc->vc_font);
src = dst;
}

diff --git a/drivers/video/console/fbcon.h b/drivers/video/console/fbcon.h
index 6bd2e0c..8623bac 100644
--- a/drivers/video/console/fbcon.h
+++ b/drivers/video/console/fbcon.h
@@ -16,6 +16,7 @@
#include <linux/vt_kern.h>

#include <asm/io.h>
+#include "fbdraw.h"

#define FBCON_FLAGS_INIT 1
#define FBCON_FLAGS_CURSOR_TIMER 2
@@ -219,10 +220,6 @@ extern void fbcon_set_tileops(struct vc_data *vc, struct fb_info *info);
extern void fbcon_set_bitops(struct fbcon_ops *ops);
extern int soft_cursor(struct fb_info *info, struct fb_cursor *cursor);

-#define FBCON_ATTRIBUTE_UNDERLINE 1
-#define FBCON_ATTRIBUTE_REVERSE 2
-#define FBCON_ATTRIBUTE_BOLD 4
-
static inline int real_y(struct display *p, int ypos)
{
int rows = p->vrows;
diff --git a/drivers/video/console/fbdraw.c b/drivers/video/console/fbdraw.c
new file mode 100644
index 0000000..aa18f7e
--- /dev/null
+++ b/drivers/video/console/fbdraw.c
@@ -0,0 +1,46 @@
+/*
+ * Framebuffer helpers for image draw-operations
+ *
+ * Copyright (c) 2004 Antonino Daplas <adaplas @pol.net>
+ * Copyright (c) 2012 David Herrmann <dh.herrmann@googlemail.com>
+ *
+ * Originally from drivers/video/console/bitblit.c which itself originally is
+ * from the 'accel_*' routines in drivers/video/console/fbcon.c.
+ *
+ * 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/console.h>
+#include <linux/fb.h>
+#include <linux/kd.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include "fbdraw.h"
+
+void fbdraw_update_attr(u8 *dst, const u8 *src, int attribute,
+ struct console_font *font)
+{
+ int i, offset = (font->height < 10) ? 1 : 2;
+ int width = DIV_ROUND_UP(font->width, 8);
+ unsigned int cellsize = font->height * width;
+ u8 c;
+
+ offset = cellsize - (offset * width);
+ for (i = 0; i < cellsize; i++) {
+ c = src[i];
+ if (attribute & FBCON_ATTRIBUTE_UNDERLINE && i >= offset)
+ c = 0xff;
+ if (attribute & FBCON_ATTRIBUTE_BOLD)
+ c |= c >> 1;
+ if (attribute & FBCON_ATTRIBUTE_REVERSE)
+ c = ~c;
+ dst[i] = c;
+ }
+}
+EXPORT_SYMBOL_GPL(fbdraw_update_attr);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("David Herrmann <dh.herrmann@googlemail.com>");
+MODULE_DESCRIPTION("Framebuffer helpers for image draw-operations");
diff --git a/drivers/video/console/fbdraw.h b/drivers/video/console/fbdraw.h
new file mode 100644
index 0000000..77edd7f
--- /dev/null
+++ b/drivers/video/console/fbdraw.h
@@ -0,0 +1,26 @@
+/*
+ * Framebuffer helpers for image draw-operations
+ *
+ * Copyright (c) 2012 David Herrmann <dh.herrmann@googlemail.com>
+ *
+ * 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.
+ */
+
+#ifndef _VIDEO_FBDRAW_H
+#define _VIDEO_FBDRAW_H
+
+#include <linux/console.h>
+#include <linux/fb.h>
+#include <linux/kd.h>
+
+/* fbcon character attributes */
+#define FBCON_ATTRIBUTE_UNDERLINE 1
+#define FBCON_ATTRIBUTE_REVERSE 2
+#define FBCON_ATTRIBUTE_BOLD 4
+
+void fbdraw_update_attr(u8 *dst, const u8 *src, int attribute,
+ struct console_font *font);
+
+#endif /* _VIDEO_FBDRAW_H */
--
1.7.11.2


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