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Remove old reference code, better match Old-LCD init with datasheet, and a bit of optimisation.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13013 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2007-04-03 21:22:48 +00:00
parent 771133eb12
commit 61350bf91c
1 changed files with 9 additions and 56 deletions
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65
firmware/target/sh/archos/player/lcd-player.c
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@ -29,6 +29,7 @@
#define OLD_LCD_CGRAM ((char)0x80) /* Character generator (patterns) */ #define OLD_LCD_CGRAM ((char)0x80) /* Character generator (patterns) */
#define OLD_LCD_ICONRAM ((char)0xE0) #define OLD_LCD_ICONRAM ((char)0xE0)
#define OLD_LCD_CONTRAST_SET ((char)0xA8) #define OLD_LCD_CONTRAST_SET ((char)0xA8)
#define OLD_LCD_NOP ((char)0x00)
#define OLD_LCD_SYSTEM_SET ((char)0x60) #define OLD_LCD_SYSTEM_SET ((char)0x60)
#define OLD_LCD_SET_POWER_SAVE_OSC_CONTROL ((char)0x40) #define OLD_LCD_SET_POWER_SAVE_OSC_CONTROL ((char)0x40)
#define OLD_LCD_SET_POWER_CONTROL ((char)0x50) #define OLD_LCD_SET_POWER_CONTROL ((char)0x50)
@ -38,6 +39,7 @@
#define NEW_LCD_CGRAM ((char)0xC0) /* Character generator (patterns) */ #define NEW_LCD_CGRAM ((char)0xC0) /* Character generator (patterns) */
#define NEW_LCD_ICONRAM ((char)0x40) #define NEW_LCD_ICONRAM ((char)0x40)
#define NEW_LCD_CONTRAST_SET ((char)0x50) #define NEW_LCD_CONTRAST_SET ((char)0x50)
#define NEW_LCD_NOP ((char)0x00)
#define NEW_LCD_FUNCTION_SET ((char)0x10) #define NEW_LCD_FUNCTION_SET ((char)0x10)
#define NEW_LCD_SET_POWER_SAVE_OSC_CONTROL ((char)0x0c) #define NEW_LCD_SET_POWER_SAVE_OSC_CONTROL ((char)0x0c)
#define NEW_LCD_SET_POWER_CONTROL_REG ((char)0x20) #define NEW_LCD_SET_POWER_CONTROL_REG ((char)0x20)
@ -112,6 +114,11 @@ void lcd_init_device(void)
{ {
unsigned char data_vector[64]; unsigned char data_vector[64];
/* LCD init for cold start */
PBCR2 &= 0xff00; /* Set PB0..PB3 to GPIO */
or_b(0x0f, &PBDRL); /* ... high */
or_b(0x0f, &PBIORL); /* ... and output */
new_lcd = is_new_player(); new_lcd = is_new_player();
if (new_lcd) if (new_lcd)
@ -121,11 +128,6 @@ void lcd_init_device(void)
lcd_cgram = NEW_LCD_CGRAM; lcd_cgram = NEW_LCD_CGRAM;
lcd_iconram = NEW_LCD_ICONRAM; lcd_iconram = NEW_LCD_ICONRAM;
/* LCD init for cold start */
PBCR2 &= 0xff00; /* Set PB0..PB3 to GPIO */
or_b(0x0f, &PBDRL); /* ... high */
or_b(0x0f, &PBIORL); /* ... and output */
lcd_write_command(NEW_LCD_FUNCTION_SET|1); /* CGRAM selected */ lcd_write_command(NEW_LCD_FUNCTION_SET|1); /* CGRAM selected */
lcd_write_command_e(NEW_LCD_CONTRAST_SET, 0x08); lcd_write_command_e(NEW_LCD_CONTRAST_SET, 0x08);
lcd_write_command(NEW_LCD_SET_POWER_SAVE_OSC_CONTROL|2); lcd_write_command(NEW_LCD_SET_POWER_SAVE_OSC_CONTROL|2);
@ -152,12 +154,7 @@ void lcd_init_device(void)
lcd_cgram = OLD_LCD_CGRAM; lcd_cgram = OLD_LCD_CGRAM;
lcd_iconram = OLD_LCD_ICONRAM; lcd_iconram = OLD_LCD_ICONRAM;
#if 1 lcd_write_command(OLD_LCD_NOP);
/* LCD init for cold start */
PBCR2 &= 0xff00; /* Set PB0..PB3 to GPIO */
or_b(0x0f, &PBDRL); /* ... high */
or_b(0x0f, &PBIORL); /* ... and output */
lcd_write_command(OLD_LCD_SYSTEM_SET|1); /* CGRAM selected */ lcd_write_command(OLD_LCD_SYSTEM_SET|1); /* CGRAM selected */
lcd_write_command(OLD_LCD_SET_POWER_SAVE_OSC_CONTROL|2); lcd_write_command(OLD_LCD_SET_POWER_SAVE_OSC_CONTROL|2);
/* oscillator on */ /* oscillator on */
@ -180,52 +177,8 @@ void lcd_init_device(void)
lcd_write_command(OLD_LCD_ICONRAM + 0x10); lcd_write_command(OLD_LCD_ICONRAM + 0x10);
lcd_write_data(data_vector, 13); lcd_write_data(data_vector, 13);
sleep(HZ/10);
lcd_write_command(OLD_LCD_SET_DISPLAY_CONTROL|1); /* display on */ lcd_write_command(OLD_LCD_SET_DISPLAY_CONTROL|1); /* display on */
#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(OLD_LCD_SYSTEM_SET|1);
lcd_write_command(OLD_LCD_SET_POWER_SAVE_OSC_CONTROL|2);
lcd_write_command(OLD_LCD_SET_POWER_CONTROL|7);
memset(data_vector, 0x24, 13);
lcd_write_command(OLD_LCD_DDRAM); /* Set DDRAM address */
lcd_write_data(data_vector, 13); /* all spaces */
lcd_write_command(OLD_LCD_DDRAM + 0x10);
lcd_write_data(data_vector, 13);
lcd_write_command(OLD_LCD_DDRAM + 0x20);
lcd_write_data(data_vector, 13);
memset(data_vector, 0, 32);
lcd_write_command(OLD_LCD_CGRAM); /* Set CGRAM address */
lcd_write_data(data_vector, 32); /* zero out */
lcd_write_command(OLD_LCD_ICONRAM); /* Set ICONRAM address */
lcd_write_data(data_vector, 13); /* zero out */
lcd_write_command(OLD_LCD_ICONRAM + 0x10);
lcd_write_data(data_vector, 13);
for (i=0; i<300000; i++) asm volatile ("nop"); /* wait 150 ms */
lcd_write_command(OLD_LCD_SET_DISPLAY_CONTROL|1);
lcd_write_command_e(OLD_LCD_CONTRAST_SET, 0); /* Set contrast */
}
#endif
} }
lcd_set_contrast(lcd_default_contrast()); lcd_set_contrast(lcd_default_contrast());
} }