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Fix Onda VX777 LCD not working on boot

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This fixes an issue with some Onda VX777's where the LCD doesn't seem to be
correctly inited by the OF SPL.

Based on FS#11888 by Purling Nayuki.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29083 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Maurus Cuelenaere 2011-01-18 12:10:09 +00:00
parent ccad6d0daf
commit 980225c3e2
1 changed files with 14 additions and 5 deletions
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19
firmware/target/mips/ingenic_jz47xx/onda_vx747/lcd-onda_vx747.c
View file

@ -38,7 +38,16 @@ do { \
#define SLEEP(x) { register int __i; for(__i=0; __i<x; __i++) asm volatile("nop\n nop\n"); }
#define DELAY SLEEP(700000);
#ifdef USB_BOOT
#if (defined(ONDA_VX777) && !defined(BOOTLOADER)) || defined(USB_BOOT)
/*
* Onda VX777 needs this in order to boot correctly, it looks like the SPL
* does not correctly initialize the LCD for Rockbox to switch it on.
*/
#define RESET_LCD
#endif
#ifdef RESET_LCD
static void _display_pin_init(void)
{
my__gpio_as_lcd_16bit();
@ -61,7 +70,7 @@ static void _display_pin_init(void)
#define SLCD_SEND_COMMAND(cmd,val) SLCD_SET_COMMAND(cmd); SLCD_SET_DATA(val);
static void _display_init(void)
{
#ifdef USB_BOOT
#ifdef RESET_LCD
SLCD_SEND_COMMAND(REG_SOFT_RESET, SOFT_RESET(1));
SLEEP(700000);
SLCD_SEND_COMMAND(REG_SOFT_RESET, SOFT_RESET(0));
@ -78,7 +87,7 @@ static void _display_init(void)
SLCD_SEND_COMMAND(REG_ENTRY_MODE, (ENTRY_MODE_BGR | ENTRY_MODE_VID | ENTRY_MODE_AM));
#endif
#ifdef USB_BOOT
#ifdef RESET_LCD
SLCD_SEND_COMMAND(REG_DISP_CTRL2, 0x503);
SLCD_SEND_COMMAND(REG_DISP_CTRL3, 1);
SLCD_SEND_COMMAND(REG_LPCTRL, 0x10);
@ -144,7 +153,7 @@ static void _display_init(void)
SLCD_SEND_COMMAND(REG_DISP_CTRL1, (DISP_CTRL1_BASEE | DISP_CTRL1_VON |
DISP_CTRL1_GON | DISP_CTRL1_DTE | DISP_CTRL1_D(3)));
SLEEP(3500000);
#endif /* USB_BOOT */
#endif /* RESET_LCD */
}
static void _display_on(void)
@ -199,7 +208,7 @@ void lcd_init_controller(void)
{
lcd_clock_enable();
#ifdef USB_BOOT
#ifdef RESET_LCD
_display_pin_init();
#endif
_set_lcd_bus();