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authorJens Arnold <amiconn@rockbox.org>2004-11-11 01:11:06 +0000
committerJens Arnold <amiconn@rockbox.org>2004-11-11 01:11:06 +0000
commit2e290d6cecea3a502f5ac94aa4eb24d59e4c60f1 (patch)
tree2e65d877c6c799c004f1a2b9cdb65817c4a1ab27 /firmware
parentca81ed218ad891a87ec5849d062a9cb10f983c22 (diff)
downloadrockbox-2e290d6cecea3a502f5ac94aa4eb24d59e4c60f1.tar.gz
rockbox-2e290d6cecea3a502f5ac94aa4eb24d59e4c60f1.zip
Important step towards player flashing: LCD inits for both new LCD (confirmed working) and old LCD.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@5397 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware')
-rw-r--r--firmware/drivers/lcd-player.c111
1 files changed, 109 insertions, 2 deletions
diff --git a/firmware/drivers/lcd-player.c b/firmware/drivers/lcd-player.c
index 8dd97cac0a..ca5c93a04b 100644
--- a/firmware/drivers/lcd-player.c
+++ b/firmware/drivers/lcd-player.c
@@ -43,9 +43,13 @@
#define NEW_LCD_CRAM ((char)0x80) /* Characters */
#define NEW_LCD_PRAM ((char)0xC0) /* Patterns */
#define NEW_LCD_IRAM ((char)0x40) /* Icons */
+#define NEW_LCD_FUNCTION_SET ((char)0x10)
+#define NEW_LCD_POWER_SAVE_MODE_OSC_CONTROL_SET ((char)0x0c)
+#define NEW_LCD_POWER_CONTROL_REGISTER_SET ((char)0x20)
+#define NEW_LCD_DISPLAY_CONTROL_SET ((char)0x28)
-#define LCD_CURSOR(x,y) ((char)(lcd_cram+((y)*16+(x))))
-#define LCD_ICON(i) ((char)(lcd_iram+i))
+#define LCD_CURSOR(x,y) ((char)(lcd_cram+((y)*16+(x))))
+#define LCD_ICON(i) ((char)(lcd_iram+i))
#define SCROLLABLE_LINES 2
@@ -488,6 +492,8 @@ void lcd_set_contrast(int val)
void lcd_init (void)
{
+ unsigned char data_vector[64];
+
new_lcd = has_new_lcd();
memset(extended_chars_mapped, NO_CHAR, sizeof(extended_chars_mapped));
memset(extended_pattern_content, NO_CHAR,sizeof(extended_pattern_content));
@@ -500,6 +506,32 @@ void lcd_init (void)
lcd_pram = NEW_LCD_PRAM;
lcd_iram = NEW_LCD_IRAM;
pattern_size=7; /* Last pattern, 7 for new LCD */
+
+ /* LCD init for cold start */
+ PBCR2 &= 0xff00; /* Set PB0..PB3 to GPIO */
+ or_b(0x0f, &PBIORL); /* ... output */
+ or_b(0x0f, &PBDRL); /* ... and high */
+
+ lcd_write_command(NEW_LCD_FUNCTION_SET + 1); /* CGRAM selected */
+ lcd_write_command(NEW_LCD_CONTRAST_SET);
+ lcd_data_byte = 0x08;
+ lcd_write_data(&lcd_data_byte, 1);
+ lcd_write_command(NEW_LCD_POWER_SAVE_MODE_OSC_CONTROL_SET + 2);
+ /* oscillator on */
+ lcd_write_command(NEW_LCD_POWER_CONTROL_REGISTER_SET + 7);
+ /* opamp buffer + voltage booster on*/
+
+ memset(data_vector, 0x20, 64);
+ lcd_write_command(NEW_LCD_CRAM); /* Set DDRAM address */
+ lcd_write_data(data_vector, 64); /* all spaces */
+
+ memset(data_vector, 0, 64);
+ lcd_write_command(NEW_LCD_PRAM); /* Set CGRAM address */
+ lcd_write_data(data_vector, 64); /* zero out */
+ lcd_write_command(NEW_LCD_IRAM); /* Set ICONRAM address */
+ lcd_write_data(data_vector, 16); /* zero out */
+
+ lcd_write_command(NEW_LCD_DISPLAY_CONTROL_SET + 1); /* display on */
}
else {
lcd_ascii = old_lcd_rocklatin1_to_xlcd;
@@ -508,6 +540,81 @@ void lcd_init (void)
lcd_pram = OLD_LCD_PRAM;
lcd_iram = OLD_LCD_IRAM;
pattern_size=3; /* Last pattern, 3 for old LCD */
+
+#if 1
+ /* LCD init for cold start */
+ PBCR2 &= 0xff00; /* Set PB0..PB3 to GPIO */
+ or_b(0x0f, &PBIORL); /* ... output */
+ or_b(0x0f, &PBDRL); /* ... and high */
+
+ lcd_write_command(0x61);
+ lcd_write_command(0x42);
+ lcd_write_command(0x57);
+
+ memset(data_vector, 0x24, 13);
+ lcd_write_command(OLD_LCD_CRAM); /* Set DDRAM address */
+ lcd_write_data(data_vector, 13); /* all spaces */
+ lcd_write_command(OLD_LCD_CRAM + 0x10);
+ lcd_write_data(data_vector, 13);
+ lcd_write_command(OLD_LCD_CRAM + 0x20);
+ lcd_write_data(data_vector, 13);
+
+ memset(data_vector, 0, 32);
+ lcd_write_command(OLD_LCD_PRAM); /* Set CGRAM address */
+ lcd_write_data(data_vector, 32); /* zero out */
+ lcd_write_command(OLD_LCD_IRAM); /* Set ICONRAM address */
+ lcd_write_data(data_vector, 13); /* zero out */
+ lcd_write_command(OLD_LCD_IRAM + 0x10);
+ lcd_write_data(data_vector, 13);
+
+ lcd_write_command(0x31);
+#else
+ /* archos look-alike code, left here for reference. As soon as the
+ * rockbox version is confirmed working, this will go away */
+ {
+ int i;
+
+ PBCR2 &= 0xc000;
+ PBIOR |= 0x000f;
+ PBDR |= 0x0002;
+ PBDR |= 0x0001;
+ PBDR |= 0x0004;
+ PBDR |= 0x0008;
+
+ for (i=0; i<200; i++) asm volatile ("nop"); /* wait 100 us */
+
+ PBDR &= 0xfffd; /* CS low (assert) */
+
+ for (i=0; i<100; i++) asm volatile ("nop"); /* wait 50 us */
+
+ lcd_write_command(0x61);
+ lcd_write_command(0x42);
+ lcd_write_command(0x57);
+
+ memset(data_vector, 0x24, 13);
+ lcd_write_command(0xb0); /* Set DDRAM address */
+ lcd_write_data(data_vector, 13); /* all spaces */
+ lcd_write_command(0xc0);
+ lcd_write_data(data_vector, 13);
+ lcd_write_command(0xd0);
+ lcd_write_data(data_vector, 13);
+
+ memset(data_vector, 0, 32);
+ lcd_write_command(0x80); /* Set CGRAM address */
+ lcd_write_data(data_vector, 32); /* zero out */
+ lcd_write_command(0xe0); /* Set ICONRAM address */
+ lcd_write_data(data_vector, 13); /* zero out */
+ lcd_write_command(0xf0);
+ lcd_write_data(data_vector, 13);
+
+ for (i=0; i<300000; i++) asm volatile ("nop"); /* wait 150 ms */
+
+ lcd_write_command(0x31);
+ lcd_write_command(0xa8); /* Set contrast control */
+ lcd_data_byte = 0;
+ lcd_write_data(&lcd_data_byte, 1); /* 0 */
+ }
+#endif
}
lcd_set_contrast(lcd_default_contrast());