Fix lcd_roll() on H1x0.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8955 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 6 insertions, 0 deletions

diff --git a/firmware/drivers/lcd-h100.c b/firmware/drivers/lcd-h100.c
index 78b1e33dc8..7b67ad023c 100644
--- a/firmware/drivers/lcd-h100.c
+++ b/firmware/drivers/lcd-h100.c
@@ -53,6 +53,7 @@
 #define LCD_CNTL_ELECTRONIC_VOLUME      0x81
 #define LCD_CNTL_DATA_INPUT_DIR         0x84
 #define LCD_CNTL_DISPLAY_START_LINE     0x8a
+#define LCD_CNTL_AREA_SCROLL            0x10
 
 #define LCD_CNTL_PAGE                   0xb1
 #define LCD_CNTL_COLUMN                 0x13
@@ -162,6 +163,8 @@ void lcd_init(void)
 
 void lcd_init(void)
 {
+    static unsigned char area_data[4] = { 0x01, 0x00, 0x7f, 0x80 };
+
     /* GPO35 is the LCD A0 pin
        GPO46 is LCD RESET */
     or_l(0x00004008, &GPIO1_OUT);
@@ -195,6 +198,9 @@ void lcd_init(void)
     sleep(HZ/10);                               /* 100 ms pause */
     lcd_write_command_ex(LCD_CNTL_POWER_CONTROL, 0x17, -1);
 
+    lcd_write_command(LCD_CNTL_AREA_SCROLL);
+    lcd_write_data(area_data, sizeof(area_data));
+
     lcd_write_command_ex(LCD_CNTL_DISPLAY_START_LINE, 0, -1);
     lcd_write_command_ex(LCD_CNTL_GRAY_SCALE_PATTERN, 0x42, -1);
     lcd_write_command_ex(LCD_CNTL_DISPLAY_MODE, 0, -1); /* Greyscale mode */