コード例 #1
0
static int __init
ds1302_probe(void)
{
	int retval, res, baur;

	baur=(boot_cpu_data.bus_clock/(2*1000*1000));

	printk("%s: Set PLD_RTCBAUR = %d\n", ds1302_name,baur);

	outw(0x0000,(unsigned long)PLD_RTCCR);
	outw(0x0000,(unsigned long)PLD_RTCRSTODT);
	outw(baur,(unsigned long)PLD_RTCBAUR);

	/* Try to talk to timekeeper. */

	ds1302_wenable();
	/* write RAM byte 0 */
	/* write something magic */
	out_byte_rtc(0xc0,MAGIC_PATTERN);

	/* read RAM byte 0 */
	if((res = in_byte_rtc(0xc1)) == MAGIC_PATTERN) {
		char buf[100];
		ds1302_wdisable();
		printk("%s: RTC found.\n", ds1302_name);
		get_rtc_status(buf);
		printk(buf);
		retval = 1;
	} else {
		printk("%s: RTC not found.\n", ds1302_name);
		retval = 0;
	}

	return retval;
}
コード例 #2
0
void
ds1302_writereg(int reg, unsigned char val)
{
	ds1302_wenable();
	out_byte_rtc((0x80 | (reg << 1)),val);
	ds1302_wdisable();
}
コード例 #3
0
ファイル: ds1302.c プロジェクト: TitaniumBoy/lin
void
ds1302_writereg(int reg, unsigned char val) 
{
	ds1302_wenable();
	start();
	out_byte(0x80 | (reg << 1)); /* write register */
	out_byte(val);
	stop();
	ds1302_wdisable();
}
コード例 #4
0
ファイル: ds1302.c プロジェクト: TitaniumBoy/lin
static int
ds1302_probe(void) 
{
	int retval, res; 

	TK_RST_DIR(1);
	TK_SCL_DIR(1);
	TK_SDA_DIR(0);
	
	/* Try to talk to timekeeper. */

	ds1302_wenable();  
	start();
	out_byte(0xc0); /* write RAM byte 0 */	
	out_byte(MAGIC_PATTERN); /* write something magic */
	start();
	out_byte(0xc1); /* read RAM byte 0 */

	if((res = in_byte()) == MAGIC_PATTERN) {
		char buf[100];
		stop();
		ds1302_wdisable();
		printk("%s: RTC found.\n", ds1302_name);
		printk("%s: SDA, SCL, RST on PB%i, PB%i, %s%i\n",
		       ds1302_name,
		       CONFIG_ETRAX_DS1302_SDABIT,
		       CONFIG_ETRAX_DS1302_SCLBIT,
#ifdef CONFIG_ETRAX_DS1302_RST_ON_GENERIC_PORT
		       "GENIO",
#else
		       "PB",
#endif
		       CONFIG_ETRAX_DS1302_RSTBIT);
                get_rtc_status(buf);
                printk(buf);
		retval = 1;
	} else {
		stop();
		printk("%s: RTC not found.\n", ds1302_name);
		retval = 0;
	}

	return retval;
}
コード例 #5
0
ファイル: ds1302.c プロジェクト: ManiacTwister/linux-hnd
void
ds1302_writereg(int reg, unsigned char val) 
{
#ifndef CONFIG_ETRAX_RTC_READONLY
	int do_writereg = 1;
#else
	int do_writereg = 0;

	if (reg == RTC_TRICKLECHARGER)
		do_writereg = 1;
#endif

	if (do_writereg) {
		ds1302_wenable();
		start();
		out_byte(0x80 | (reg << 1)); /* write register */
		out_byte(val);
		stop();
		ds1302_wdisable();
	}
}