[U-Boot] [PATCH v3 05/11] cfb_console: Add console_clear_line function

Anatolij Gustschin
2012-05-20T20:38:08Z

From: Pali Roh?r <pali.rohar@gmail.com>

console_clear_line() clears part of specified line or the full line.

Signed-off-by: Pali Roh?r <pali.rohar@gmail.com>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
---
Changes since v2:
- remove console_clear() from this patch, it should be added in
another patch which uses this function
- fix arguments for hw accelerated fill and drop FIXME comments
- fix console_clear_line() end argument, as we start counting
columns from zero
- fix coding style
- extend comments
- tested the code with hw accelerated fill

drivers/video/cfb_console.c | 49 +++++++++++++++++++++++++++++++-----------
1 files changed, 36 insertions(+), 13 deletions(-)

diff --git a/drivers/video/cfb_console.c b/drivers/video/cfb_console.c
index 51ea167..6fa61d2 100644
--- a/drivers/video/cfb_console.c
+++ b/drivers/video/cfb_console.c
@@ -683,6 +683,41 @@ static void memcpyl(int *d, int *s, int c)
}
#endif

+static void console_clear_line(int line, int begin, int end)
+{
+#ifdef VIDEO_HW_RECTFILL
+ video_hw_rectfill(VIDEO_PIXEL_SIZE, /* bytes per pixel */
+ VIDEO_FONT_WIDTH * begin, /* dest pos x */
+ video_logo_height +
+ VIDEO_FONT_HEIGHT * line, /* dest pos y */
+ VIDEO_FONT_WIDTH * (end - begin + 1), /* fr. width */
+ VIDEO_FONT_HEIGHT, /* frame height */
+ bgx /* fill color */
+ );
+#else
+ if (begin == 0 && (end + 1) == CONSOLE_COLS) {
+ memsetl(CONSOLE_ROW_FIRST +
+ CONSOLE_ROW_SIZE * line, /* offset of row */
+ CONSOLE_ROW_SIZE >> 2, /* length of row */
+ bgx /* fill color */
+ );
+ } else {
+ void *offset;
+ int i, size;
+
+ offset = CONSOLE_ROW_FIRST +
+ CONSOLE_ROW_SIZE * line + /* offset of row */
+ VIDEO_FONT_WIDTH *
+ VIDEO_PIXEL_SIZE * begin; /* offset of col */
+ size = VIDEO_FONT_WIDTH * VIDEO_PIXEL_SIZE * (end - begin + 1);
+ size >>= 2; /* length to end for memsetl() */
+ /* fill at col offset of i'th line using bgx as fill color */
+ for (i = 0; i < VIDEO_FONT_HEIGHT; i++)
+ memsetl(offset + i * VIDEO_LINE_LEN, size, bgx);
+ }
+#endif
+}
+
static void console_scrollup(void)
{
/* copy up rows ignoring the first one */
@@ -703,20 +738,8 @@ static void console_scrollup(void)
memcpyl(CONSOLE_ROW_FIRST, CONSOLE_ROW_SECOND,
CONSOLE_SCROLL_SIZE >> 2);
#endif
-
/* clear the last one */
-#ifdef VIDEO_HW_RECTFILL
- video_hw_rectfill(VIDEO_PIXEL_SIZE, /* bytes per pixel */
- 0, /* dest pos x */
- VIDEO_VISIBLE_ROWS
- - VIDEO_FONT_HEIGHT, /* dest pos y */
- VIDEO_VISIBLE_COLS, /* frame width */
- VIDEO_FONT_HEIGHT, /* frame height */
- CONSOLE_BG_COL /* fill color */
- );
-#else
- memsetl(CONSOLE_ROW_LAST, CONSOLE_ROW_SIZE >> 2, CONSOLE_BG_COL);
-#endif
+ console_clear_line(CONSOLE_ROWS - 1, 0, CONSOLE_COLS - 1);
}

static void console_back(void)
--
1.7.1