void serial_setbrg_dev(const int dev_index)
{
DECLARE_GLOBAL_DATA_PTR;
struct s5pc1xx_uart *const uart = s5pc1xx_get_base_uart(dev_index);
u32 pclk = get_pclk();
u32 baudrate = gd->baudrate;
u32 val;
val = pclk / baudrate;
writel(val / 16 - 1, &uart->ubrdiv);
writew(udivslot[val % 16], &uart->udivslot);
}
static void _serial_setbrg(const int dev_index)
{
struct s3c_uart *uart = (struct s3c_uart *)samsung_get_base_uart();
unsigned int reg = 0;
int i;
/* value is calculated so : (int)(PCLK/16./baudrate) -1 */
reg = get_pclk() / (16 * gd->baudrate) - 1;
writel(reg, &uart->ubrdiv);
for (i = 0; i < 100; i++)
/* Delay */ ;
}
static void _serial_init(int bord_rate, int data, int parity, int stop)
{
setval(GPHCON, 0xa, 4, 4 + 4 * UART_NR);
setbit(GPHUP, 0x3, 2 + 2 * UART_NR);
switch(data)
{
case 5:
clrbit(ULCON, 0x3, 0);
break;
case 6:
setval(ULCON, 0x1, 2, 0);
break;
case 7:
setval(ULCON, 0x2, 2, 0);
break;
case 8:
default:
setbit(ULCON, 0x3, 0);
}
switch(parity)
{
case 1:
setval(ULCON, 0x4, 3, 3);
break;
case 2:
setval(ULCON, 0x5, 3, 3);
break;
case 0:
default:
clrbit(ULCON, 0x7, 3);
}
switch(stop)
{
case 2:
set1(ULCON, 2);
break;
case 1:
default:
set0(ULCON, 2);
}
setval(UCON, 0x5, 4, 0);
UBRDIV = get_pclk() / (bord_rate * 16) - 1;
}
int timer_init(void)
{
struct s5pc1xx_timer *const timer = s5pc1xx_get_base_timer();
u32 val;
/*
* @ PWM Timer 4
* Timer Freq(HZ) =
* PCLK / { (prescaler_value + 1) * (divider_value) }
*/
/* set prescaler : 16 */
/* set divider : 2 */
writel((PRESCALER_1 & 0xff) << 8, &timer->tcfg0);
writel((MUX_DIV_2 & 0xf) << MUX4_DIV_SHIFT, &timer->tcfg1);
if (count_value == 0) {
/* reset initial value */
/* count_value = 2085937.5(HZ) (per 1 sec)*/
count_value = get_pclk() / ((PRESCALER_1 + 1) *
(MUX_DIV_2 + 1));
/* count_value / 100 = 20859.375(HZ) (per 10 msec) */
count_value = count_value / 100;
}
/* set count value */
writel(count_value, &timer->tcntb4);
lastdec = count_value;
val = (readl(&timer->tcon) & ~(0x07 << TCON_TIMER4_SHIFT)) |
S5PC1XX_TCON4_AUTO_RELOAD;
/* auto reload & manual update */
writel(val | S5PC1XX_TCON4_UPDATE, &timer->tcon);
/* start PWM timer 4 */
writel(val | S5PC1XX_TCON4_START, &timer->tcon);
timestamp = 0;
return 0;
}
