[U-Boot] [PATCH] lcd: allow overriding lcd_get_size()

[Anatolij Gustschin]

Remove the redundant lcd_line_length initialisation which
sneaked in when an earlier version of the patch of commit
6d330719 has been rebased.

Some lcd drivers need to setup lcd_line_length not from the
panel_info parameters but by different means. Make the
lcd_get_size() weak to allow setting lcd_line_length in
a driver specific way.

Signed-off-by: Anatolij Gustschin <agust at denx.de>
Cc: Stephen Warren <swarren at wwwdotorg.org>
---
 common/lcd.c |   10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/common/lcd.c b/common/lcd.c
index 5dd7948..56bf067 100644
--- a/common/lcd.c
+++ b/common/lcd.c
@@ -386,8 +386,13 @@ static void test_pattern(void)
 /************************************************************************/
 /* ** GENERIC Initialization Routines					*/
 /************************************************************************/
-
-int lcd_get_size(int *line_length)
+/*
+ * With most lcd drivers the line length is set up
+ * by calculating it from panel_info parameters. Some
+ * drivers need to calculate the line length differently,
+ * so make the function weak to allow overriding it.
+ */
+__weak int lcd_get_size(int *line_length)
 {
 	*line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 	return *line_length * panel_info.vl_row;
@@ -495,7 +500,6 @@ static int lcd_init(void *lcdbase)
 	debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 
 	lcd_get_size(&lcd_line_length);
-	lcd_line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 	lcd_is_enabled = 1;
 	lcd_clear();
 	lcd_enable();
-- 
1.7.9.5