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authorKarl Kurbjun <kkurbjun@gmail.com>2007-06-04 14:07:26 +0000
committerKarl Kurbjun <kkurbjun@gmail.com>2007-06-04 14:07:26 +0000
commitf863ba671e2f58c6118e9c00e15631ead31c1c4b (patch)
tree7b9af523912f55aec87fa6b986c802c4cb35b336 /firmware
parent63c85110d0d7cf6ea33b37cd7923fb65523ac749 (diff)
downloadrockbox-f863ba671e2f58c6118e9c00e15631ead31c1c4b.tar.gz
rockbox-f863ba671e2f58c6118e9c00e15631ead31c1c4b.zip
Commit part of FS7113: This adds proper LCD initialization to the gigabeat thanks to Alex Gerchanovsky
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13552 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware')
-rw-r--r--firmware/target/arm/s3c2440/gigabeat-fx/lcd-meg-fx.c76
1 files changed, 61 insertions, 15 deletions
diff --git a/firmware/target/arm/s3c2440/gigabeat-fx/lcd-meg-fx.c b/firmware/target/arm/s3c2440/gigabeat-fx/lcd-meg-fx.c
index 17b0a6966e..c96e0d6d25 100644
--- a/firmware/target/arm/s3c2440/gigabeat-fx/lcd-meg-fx.c
+++ b/firmware/target/arm/s3c2440/gigabeat-fx/lcd-meg-fx.c
@@ -1,16 +1,9 @@
#include "config.h"
-#include <string.h>
#include "cpu.h"
+#include "string.h"
#include "lcd.h"
#include "kernel.h"
-#include "system.h"
-#include "mmu-meg-fx.h"
-#include <stdlib.h>
-#include "memory.h"
#include "lcd-target.h"
-#include "font.h"
-#include "rbunicode.h"
-#include "bidi.h"
#define LCDADDR(x, y) (&lcd_framebuffer[(y)][(x)])
@@ -47,11 +40,11 @@ unsigned int LCDBASEL(unsigned int address)
/* LCD init */
void lcd_init_device(void)
{
+ int i;
#ifdef BOOTLOADER
/* When the Rockbox bootloader starts, we are changing framebuffer address,
but we don't want what's shown on the LCD to change until we do an
lcd_update(), so copy the data from the old framebuffer to the new one */
- int i;
unsigned short *buf = (unsigned short*)FRAME;
memcpy(FRAME, (short *)((LCDSADDR1)<<1), 320*240*2);
@@ -68,11 +61,62 @@ void lcd_init_device(void)
LCDSADDR2 = LCDBASEL((unsigned)FRAME);
LCDSADDR3 = 0x000000F0;
- LCDCON5 |= 1 << 11; /* Switch from 555I mode to 565 mode */
-
#if !defined(BOOTLOADER)
lcd_poweroff = false;
#endif
+
+ /* ENVID = 1, BPPMODE = 16 bpp, PNRMODE = TFT, MMODE = Each Frame, CLKVAL = 8 */
+ LCDCON1 = 0x879;
+
+ /* VCPW = 1, VFPD = 5, LINEVAL = 319, VBPD = 7 */
+ LCDCON2 = 0x74FC141;
+
+ /* HFPD = 9, HOZVAL = 239, HBPD = 7 */
+ LCDCON3 = 0x38EF09;
+
+ /* HSPW = 7 */
+ LCDCON4 = 7;
+
+ /* HWSWP = 1, INVVFRAM = 1, INVVLINE = 1, FRM565 = 1, All others = 0 */
+ LCDCON5 = 0xB01;
+
+ /* LCD controller reset */
+ GPBCON = (GPBCON & ~((1<<15)|(1<<17))) | (1<<16)|(1<<14); /* GPB7=OUT, GPB8=OUT */
+ GPBDAT |= (1<<7); /* LCD reset */
+ GPBUP |= (1<<8) | (1<<7) | 1; /* pullup GPB8, GPB7, GPB0(?) */
+ CLKCON |= (1<<5); /* enable LCD clock */
+
+ /* SPI bus transfer */
+ GPBDAT &= ~(1<<8); /* LCD CS off */
+
+ /* Start the SPI interface */
+ CLKCON |= 1<<18; /* enable SPI clock */
+ SPCON0 = 0x3E; /* enable iterrupt mode, master,active low,format B */
+ SPPRE0 = 0x18; /* Baud rate = PCLK(50MHz) / 2 / (Prescaler value + 1) */
+
+ /* SPI data - Right now we are not sure what each of these SPI writes is actually
+ * telling the lcd. Many thanks to Alex Gerchanovsky for discovering them.
+ */
+ const unsigned char initbuf[] = {
+ 0,0x0F,1,0x01, 0,0x09,1,0x06, 0,0x16,1,0xA6, 0,0x1E,1,0x49, 0,0x1F,1,0x26,
+ 0,0x0B,1,0x2F, 0,0x0C,1,0x2B, 0,0x19,1,0x5E, 0,0x1A,1,0x15, 0,0x1B,1,0x15,
+ 0,0x1D,1,0x01, 0,0x00,1,0x03, 0,0x01,1,0x10, 0,0x02,1,0x0A, 0,0x06,1,0x04,
+ 0,0x08,1,0x2E, 0,0x24,1,0x12, 0,0x25,1,0x3F, 0,0x26,1,0x0B, 0,0x27,1,0x00,
+ 0,0x28,1,0x00, 0,0x29,1,0xF6, 0,0x2A,1,0x03, 0,0x2B,1,0x0A, 0,0x04,1,0x01};
+
+ /* Send the SPI data */
+ for (i=0;i<(int)sizeof(initbuf);i++)
+ {
+ while ((SPSTA0&1)==0);
+ SPRDAT0 = initbuf[i];
+ do{int x;for(x=1000*51/2;x;x--);} while (0);
+ }
+
+ /* Stop the SPI interface */
+ SPPRE0 = 0;
+ SPCON0 = 0;
+ CLKCON &= ~(1<<18); /* disable SPI clock */
+ GPBDAT |= (1<<8); /* LCD CS on */
}
/* Update a fraction of the display. */
@@ -91,19 +135,21 @@ void lcd_update_rect(int x, int y, int width, int height)
memcpy(((char*)FRAME) + (y * sizeof(fb_data) * LCD_WIDTH), ((char *)&lcd_framebuffer) + (y * sizeof(fb_data) * LCD_WIDTH), ((height * sizeof(fb_data) * LCD_WIDTH)));
}
-
void lcd_enable(bool state)
{
if(!lcd_poweroff)
return;
- if(state) {
- if(!lcd_on) {
+ if(state)
+ {
+ if(!lcd_on)
+ {
lcd_on = true;
memcpy(FRAME, lcd_framebuffer, LCD_WIDTH*LCD_HEIGHT*2);
LCDCON1 |= 1;
}
}
- else {
+ else
+ {
if(lcd_on) {
lcd_on = false;
LCDCON1 &= ~1;