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TCC78x: Implement the user timer, rework some of the timer register #defines, and use udelay() instead of the hacky sleep_ms() in the D2 LCD driver. Doom works now.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20585 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Rob Purchase 2009-03-30 21:15:15 +00:00
parent 8739af490e
commit 75b37696fb
7 changed files with 102 additions and 63 deletions
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38
firmware/target/arm/tcc780x/cowond2/lcd-cowond2.c
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@ -116,33 +116,11 @@ static void lcd_write_reg(unsigned char reg, unsigned short val)
restore_irq(level);
}
/*
TEMP: Rough millisecond delay routine used by the LCD panel init sequence.
PCK_TCT must first have been initialised to 2Mhz by calling clock_init().
*/
static void sleep_ms(unsigned int ms)
{
/* disable timer */
TCFG1 = 0;
/* set Timer1 reference value based on 125kHz tick */
TREF1 = ms * 125;
/* single count, zero the counter, divider = 16 [2^(3+1)], enable */
TCFG1 = (1<<9) | (1<<8) | (3<<4) | 1;
/* wait until Timer1 ref reached */
while (!(TIREQ & TF1)) {};
}
static void lcd_display_on(void)
{
/* power on sequence as per the D2 firmware */
GPIOA_SET = (1<<16);
sleep_ms(10);
udelay(10000);
lcd_write_reg(1, 0x1D);
lcd_write_reg(2, 0x0);
@ -164,14 +142,14 @@ static void lcd_display_on(void)
lcd_write_reg(23, 0x0);
lcd_write_reg(24, 0x0);
lcd_write_reg(25, 0x0);
sleep_ms(10);
udelay(10000);
lcd_write_reg(9, 0x4055);
lcd_write_reg(10, 0x0);
sleep_ms(40);
udelay(40000);
lcd_write_reg(10, 0x2000);
sleep_ms(40);
udelay(40000);
lcd_write_reg(1, 0xC01D);
lcd_write_reg(2, 0x204);
@ -191,11 +169,11 @@ static void lcd_display_on(void)
lcd_write_reg(23, 0x406);
lcd_write_reg(24, 0x2);
lcd_write_reg(25, 0x0);
sleep_ms(60);
udelay(60000);
lcd_write_reg(9, 0xA55);
lcd_write_reg(10, 0x111F);
sleep_ms(10);
udelay(10000);
/* tell that we're on now */
display_on = true;
@ -210,10 +188,10 @@ static void lcd_display_off(void)
lcd_write_reg(9, 0x55);
lcd_write_reg(10, 0x1417);
lcd_write_reg(5, 0x4003);
sleep_ms(10);
udelay(10000);
lcd_write_reg(9, 0x0);
sleep_ms(10);
udelay(10000);
/* kill power to LCD panel (unconfirmed) */
GPIOA_CLEAR = (1<<16);