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LWMON5: POST RTC fix

Browse Source 
Modify the RTC API to provide one a status for the time reported by
the rtc_get() function:
  0 - a reliable time is guaranteed,
< 0 - a reliable time isn't guaranteed (power fault, clock issues,
      and so on).

The RTC chip drivers are responsible for providing this info if the
corresponding chip supports such functionality. If not - always
report that the time is reliable.

The POST RTC test was modified to detect the RTC faults utilizing
this new rtc_get() feature.

Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
This commit is contained in:
Yuri Tikhonov 2008-03-20 17:56:04 +03:00 committed by Wolfgang Denk
parent 23e20aa648
commit b73a19e160
34 changed files with 146 additions and 45 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
board/bmw/m48t59y.c
View File

@ -278,7 +278,7 @@ void m48_watchdog_arm(int usec)
/*
* U-Boot RTC support.
*/
void
int
rtc_get( struct rtc_time *tmp )
{
m48_tod_get(&tmp->tm_year,
@ -295,6 +295,8 @@ rtc_get( struct rtc_time *tmp )
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec );
#endif
return 0;
}
void

4
board/cray/L1/L1.c
View File

@ -170,9 +170,9 @@ long int initdram (int board_type)
/* ------------------------------------------------------------------------- */
/* stubs so we can print dates w/o any nvram RTC.*/
void rtc_get (struct rtc_time *tmp)
int rtc_get (struct rtc_time *tmp)
{
return;
return 0;
}
void rtc_set (struct rtc_time *tmp)
{

4
board/etin/debris/phantom.c
View File

@ -182,7 +182,7 @@ static int get_century_flag(void)
return flag;
}
void rtc_get( struct rtc_time *tmp)
int rtc_get( struct rtc_time *tmp)
{
if (phantom_flag < 0)
phantom_flag = get_phantom_flag();
@ -250,6 +250,8 @@ void rtc_get( struct rtc_time *tmp)
tmp->tm_yday = 0;
tmp->tm_isdst= 0;
}
return 0;
}
void rtc_set( struct rtc_time *tmp )

4
board/mousse/m48t59y.c
View File

@ -278,7 +278,7 @@ void m48_watchdog_arm(int usec)
/*
* U-Boot RTC support.
*/
void
int
rtc_get( struct rtc_time *tmp )
{
m48_tod_get(&tmp->tm_year,
@ -295,6 +295,8 @@ rtc_get( struct rtc_time *tmp )
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec );
#endif
return 0;
}
void

4
cpu/s3c44b0/cpu.c
View File

@ -155,7 +155,7 @@ int dcache_status (void)
#define HEX2BCD(x) ((((x) / 10) << 4) + (x) % 10)
#endif
void rtc_get (struct rtc_time* tm)
int rtc_get (struct rtc_time* tm)
{
RTCCON |= 1;
tm->tm_year = BCD2HEX(BCDYEAR);
@ -184,6 +184,8 @@ void rtc_get (struct rtc_time* tm)
tm->tm_year += 1900;
else
tm->tm_year += 2000;
return 0;
}
void rtc_set (struct rtc_time* tm)

6
drivers/rtc/bfin_rtc.c
View File

@ -85,7 +85,7 @@ void rtc_set(struct rtc_time *tmp)
}
/* Read the time from the RTC_STAT. time_in_seconds is seconds since Jan 1970 */
void rtc_get(struct rtc_time *tmp)
int rtc_get(struct rtc_time *tmp)
{
uint32_t cur_rtc_stat;
int time_in_sec;
@ -95,7 +95,7 @@ void rtc_get(struct rtc_time *tmp)
if (tmp == NULL) {
puts("Error getting the date/time\n");
return;
return -1;
}
wait_for_complete();
@ -112,6 +112,8 @@ void rtc_get(struct rtc_time *tmp)
/* Calculate the total number of seconds since epoch */
time_in_sec = (tm_sec) + MIN_TO_SECS(tm_min) + HRS_TO_SECS(tm_hr) + DAYS_TO_SECS(tm_day);
to_tm(time_in_sec, tmp);
return 0;
}
#endif

4
drivers/rtc/ds12887.c
View File

@ -88,7 +88,7 @@ static unsigned char bin2bcd (unsigned int n)
/* ------------------------------------------------------------------------- */
void rtc_get (struct rtc_time *tmp)
int rtc_get (struct rtc_time *tmp)
{
uchar sec, min, hour, mday, wday, mon, year;
@ -150,6 +150,8 @@ else
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
#endif
return 0;
}
void rtc_set (struct rtc_time *tmp)

6
drivers/rtc/ds1302.c
View File

@ -253,9 +253,10 @@ rtc_reset(void)
/* TODO */
}
void
int
rtc_get(struct rtc_time *tmp)
{
int rel = 0;
struct ds1302_st bbclk;
if(!ds1302_initted) rtc_init();
@ -265,6 +266,7 @@ rtc_get(struct rtc_time *tmp)
if (bbclk.CH) {
printf("ds1302: rtc_get: Clock was halted, clock probably "
"corrupt\n");
rel = -1;
}
tmp->tm_sec=10*bbclk.sec10+bbclk.sec;
@ -281,6 +283,8 @@ rtc_get(struct rtc_time *tmp)
DPRINTF("Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec );
return rel;
}
void

8
drivers/rtc/ds1306.c
View File

@ -91,7 +91,7 @@ static void init_spi (void);
/* ------------------------------------------------------------------------- */
/* read clock time from DS1306 and return it in *tmp */
void rtc_get (struct rtc_time *tmp)
int rtc_get (struct rtc_time *tmp)
{
volatile immap_t *immap = (immap_t *) CFG_IMMR;
unsigned char spi_byte; /* Data Byte */
@ -141,6 +141,8 @@ void rtc_get (struct rtc_time *tmp)
debug ("Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
return 0;
}
/* ------------------------------------------------------------------------- */
@ -304,7 +306,7 @@ static unsigned char rtc_read (unsigned char reg);
static void rtc_write (unsigned char reg, unsigned char val);
/* read clock time from DS1306 and return it in *tmp */
void rtc_get (struct rtc_time *tmp)
int rtc_get (struct rtc_time *tmp)
{
unsigned char sec, min, hour, mday, wday, mon, year;
@ -349,6 +351,8 @@ void rtc_get (struct rtc_time *tmp)
debug ("Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
return 0;
}
/* ------------------------------------------------------------------------- */

6
drivers/rtc/ds1307.c
View File

@ -83,8 +83,9 @@ static unsigned bcd2bin (uchar c);
/*
* Get the current time from the RTC
*/
void rtc_get (struct rtc_time *tmp)
int rtc_get (struct rtc_time *tmp)
{
int rel = 0;
uchar sec, min, hour, mday, wday, mon, year;
sec = rtc_read (RTC_SEC_REG_ADDR);
@ -104,6 +105,7 @@ void rtc_get (struct rtc_time *tmp)
/* clear the CH flag */
rtc_write (RTC_SEC_REG_ADDR,
rtc_read (RTC_SEC_REG_ADDR) & ~RTC_SEC_BIT_CH);
rel = -1;
}
tmp->tm_sec = bcd2bin (sec & 0x7F);
@ -119,6 +121,8 @@ void rtc_get (struct rtc_time *tmp)
DEBUGR ("Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
return rel;
}

6
drivers/rtc/ds1337.c
View File

@ -84,8 +84,9 @@ static unsigned bcd2bin (uchar c);
/*
* Get the current time from the RTC
*/
void rtc_get (struct rtc_time *tmp)
int rtc_get (struct rtc_time *tmp)
{
int rel = 0;
uchar sec, min, hour, mday, wday, mon_cent, year, control, status;
control = rtc_read (RTC_CTL_REG_ADDR);
@ -107,6 +108,7 @@ void rtc_get (struct rtc_time *tmp)
/* clear the OSF flag */
rtc_write (RTC_STAT_REG_ADDR,
rtc_read (RTC_STAT_REG_ADDR) & ~RTC_STAT_BIT_OSF);
rel = -1;
}
tmp->tm_sec = bcd2bin (sec & 0x7F);
@ -122,6 +124,8 @@ void rtc_get (struct rtc_time *tmp)
DEBUGR ("Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
return rel;
}

11
drivers/rtc/ds1374.c
View File

@ -107,8 +107,8 @@ static void rtc_write_raw (uchar reg, uchar val);
/*
* Get the current time from the RTC
*/
void rtc_get (struct rtc_time *tm){
int rtc_get (struct rtc_time *tm){
int rel = 0;
unsigned long time1, time2;
unsigned int limit;
unsigned char tmp;
@ -138,18 +138,23 @@ void rtc_get (struct rtc_time *tm){
if (time1 != time2) {
printf("can't get consistent time from rtc chip\n");
rel = -1;
}
DEBUGR ("Get RTC s since 1.1.1970: %d\n", time1);
to_tm(time1, tm); /* To Gregorian Date */
if (rtc_read(RTC_SR_ADDR) & RTC_SR_BIT_OSF)
if (rtc_read(RTC_SR_ADDR) & RTC_SR_BIT_OSF) {
printf ("### Warning: RTC oscillator has stopped\n");
rel = -1;
}
DEBUGR ("Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
tm->tm_year, tm->tm_mon, tm->tm_mday, tm->tm_wday,
tm->tm_hour, tm->tm_min, tm->tm_sec);
return rel;
}
/*

3
drivers/rtc/ds1556.c
View File

@ -69,7 +69,7 @@ static unsigned bcd2bin(uchar c);
/* ------------------------------------------------------------------------- */
void rtc_get( struct rtc_time *tmp )
int rtc_get( struct rtc_time *tmp )
{
uchar sec, min, hour;
uchar mday, wday, mon, year;
@ -118,6 +118,7 @@ void rtc_get( struct rtc_time *tmp )
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec );
#endif
return 0;
}
void rtc_set( struct rtc_time *tmp )

4
drivers/rtc/ds164x.c
View File

@ -70,7 +70,7 @@ static unsigned bcd2bin(uchar c);
/* ------------------------------------------------------------------------- */
void rtc_get( struct rtc_time *tmp )
int rtc_get( struct rtc_time *tmp )
{
uchar sec, min, hour;
uchar mday, wday, mon, year;
@ -115,6 +115,8 @@ void rtc_get( struct rtc_time *tmp )
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec );
#endif
return 0;
}
void rtc_set( struct rtc_time *tmp )

4
drivers/rtc/ds174x.c
View File

@ -65,7 +65,7 @@ static unsigned bcd2bin(uchar c);
/* ------------------------------------------------------------------------- */
void rtc_get( struct rtc_time *tmp )
int rtc_get( struct rtc_time *tmp )
{
uchar sec, min, hour;
uchar mday, wday, mon, year;
@ -142,6 +142,8 @@ void rtc_set( struct rtc_time *tmp )
/* unlock clock registers after read */
rtc_write( RTC_CONTROLA, ( reg_a & ~RTC_CA_WRITE ));
return 0;
}
void rtc_reset (void)

6
drivers/rtc/ds3231.c
View File

@ -86,8 +86,9 @@ static unsigned bcd2bin (uchar c);
/*
* Get the current time from the RTC
*/
void rtc_get (struct rtc_time *tmp)
int rtc_get (struct rtc_time *tmp)
{
int rel = 0;
uchar sec, min, hour, mday, wday, mon_cent, year, control, status;
control = rtc_read (RTC_CTL_REG_ADDR);
@ -109,6 +110,7 @@ void rtc_get (struct rtc_time *tmp)
/* clear the OSF flag */
rtc_write (RTC_STAT_REG_ADDR,
rtc_read (RTC_STAT_REG_ADDR) & ~RTC_STAT_BIT_OSF);
rel = -1;
}
tmp->tm_sec = bcd2bin (sec & 0x7F);
@ -124,6 +126,8 @@ void rtc_get (struct rtc_time *tmp)
DEBUGR ("Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
return rel;
}

6
drivers/rtc/isl1208.c
View File

@ -73,8 +73,9 @@ static unsigned bcd2bin (uchar c);
* Get the current time from the RTC
*/
void rtc_get (struct rtc_time *tmp)
int rtc_get (struct rtc_time *tmp)
{
int rel = 0;
uchar sec, min, hour, mday, wday, mon, year, status;
status = rtc_read (RTC_STAT_REG_ADDR);
@ -94,6 +95,7 @@ void rtc_get (struct rtc_time *tmp)
printf ("### Warning: RTC oscillator has stopped\n");
rtc_write(RTC_STAT_REG_ADDR,
rtc_read(RTC_STAT_REG_ADDR) &~ (RTC_STAT_BIT_BAT|RTC_STAT_BIT_RTCF));
rel = -1;
}
tmp->tm_sec = bcd2bin (sec & 0x7F);
@ -109,6 +111,8 @@ void rtc_get (struct rtc_time *tmp)
DEBUGR ("Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
return rel;
}
/*

7
drivers/rtc/m41t11.c
View File

@ -96,14 +96,16 @@ static unsigned char bin2bcd (unsigned int n)
#define M41T11_STORAGE_SZ (64-REG_CNT)
void rtc_get (struct rtc_time *tmp)
int rtc_get (struct rtc_time *tmp)
{
int rel = 0;
uchar data[RTC_REG_CNT];
i2c_read(CFG_I2C_RTC_ADDR, RTC_SEC_ADDR, 1, data, RTC_REG_CNT);
if( data[RTC_SEC_ADDR] & 0x80 ){
printf( "m41t11 RTC Clock stopped!!!\n" );
rel = -1;
}
tmp->tm_sec = bcd2bin (data[RTC_SEC_ADDR] & 0x7F);
tmp->tm_min = bcd2bin (data[RTC_MIN_ADDR] & 0x7F);
@ -120,6 +122,7 @@ void rtc_get (struct rtc_time *tmp)
i2c_read(CFG_I2C_RTC_ADDR, M41T11_YEAR_DATA, 1, &cent, M41T11_YEAR_SIZE);
if( !(data[RTC_HOUR_ADDR] & 0x80) ){
printf( "m41t11 RTC: cann't keep track of years without CEB set\n" );
rel = -1;
}
if( (cent & 0x1) != ((data[RTC_HOUR_ADDR]&0x40)>>7) ){
/*century flip store off new year*/
@ -136,6 +139,8 @@ void rtc_get (struct rtc_time *tmp)
debug ( "Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
return rel;
}
void rtc_set (struct rtc_time *tmp)

6
drivers/rtc/m41t60.c
View File

@ -170,12 +170,12 @@ static uchar *rtc_validate(void)
return data;
}
void rtc_get(struct rtc_time *tmp)
int rtc_get(struct rtc_time *tmp)
{
uchar const *const data = rtc_validate();
if (!data)
return;
return -1;
tmp->tm_sec = bcd2bin(data[RTC_SEC] & 0x7F);
tmp->tm_min = bcd2bin(data[RTC_MIN] & 0x7F);
@ -190,6 +190,8 @@ void rtc_get(struct rtc_time *tmp)
debug("Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
return 0;
}
void rtc_set(struct rtc_time *tmp)

4
drivers/rtc/m41t62.c
View File

@ -64,7 +64,7 @@
#define M41T62_FEATURE_HT (1 << 0)
#define M41T62_FEATURE_BL (1 << 1)
void rtc_get(struct rtc_time *tm)
int rtc_get(struct rtc_time *tm)
{
u8 buf[M41T62_DATETIME_REG_SIZE];
@ -92,6 +92,8 @@ void rtc_get(struct rtc_time *tm)
__FUNCTION__,
tm->tm_sec, tm->tm_min, tm->tm_hour,
tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
return 0;
}
void rtc_set(struct rtc_time *tm)

4
drivers/rtc/m48t35ax.c
View File

@ -42,7 +42,7 @@ static unsigned bcd2bin(uchar c);
/* ------------------------------------------------------------------------- */
void rtc_get (struct rtc_time *tmp)
int rtc_get (struct rtc_time *tmp)
{
uchar sec, min, hour, cent_day, date, month, year;
uchar ccr; /* Clock control register */
@ -83,6 +83,8 @@ void rtc_get (struct rtc_time *tmp)
debug ( "Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
return 0;
}
void rtc_set (struct rtc_time *tmp)

4
drivers/rtc/max6900.c
View File

@ -63,7 +63,7 @@ static unsigned char bin2bcd (unsigned int n)
/* ------------------------------------------------------------------------- */
void rtc_get (struct rtc_time *tmp)
int rtc_get (struct rtc_time *tmp)
{
uchar sec, min, hour, mday, wday, mon, cent, year;
int retry = 1;
@ -103,6 +103,8 @@ void rtc_get (struct rtc_time *tmp)
debug ( "Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
return 0;
}
void rtc_set (struct rtc_time *tmp)

4
drivers/rtc/mc146818.c
View File

@ -57,7 +57,7 @@ static unsigned bcd2bin(uchar c);
/* ------------------------------------------------------------------------- */
void rtc_get (struct rtc_time *tmp)
int rtc_get (struct rtc_time *tmp)
{
uchar sec, min, hour, mday, wday, mon, year;
/* here check if rtc can be accessed */
@ -101,6 +101,8 @@ void rtc_get (struct rtc_time *tmp)
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
#endif
return 0;
}
void rtc_set (struct rtc_time *tmp)

4
drivers/rtc/mcfrtc.c
View File

@ -39,7 +39,7 @@
#define isleap(y) ((((y) % 4) == 0 && ((y) % 100) != 0) || ((y) % 400) == 0)
#define STARTOFTIME 1970
void rtc_get(struct rtc_time *tmp)
int rtc_get(struct rtc_time *tmp)
{
volatile rtc_t *rtc = (rtc_t *) (CFG_MCFRTC_BASE);
@ -64,6 +64,8 @@ void rtc_get(struct rtc_time *tmp)
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
#endif
return 0;
}
void rtc_set(struct rtc_time *tmp)

4
drivers/rtc/mk48t59.c
View File

@ -135,7 +135,7 @@ void nvram_write(short dest, const void *src, size_t count)
/* ------------------------------------------------------------------------- */
void rtc_get (struct rtc_time *tmp)
int rtc_get (struct rtc_time *tmp)
{
uchar save_ctrl_a;
uchar sec, min, hour, mday, wday, mon, year;
@ -183,6 +183,8 @@ void rtc_get (struct rtc_time *tmp)
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
#endif
return 0;
}
void rtc_set (struct rtc_time *tmp)

4
drivers/rtc/mpc5xxx.c
View File

@ -55,7 +55,7 @@ typedef struct rtc5200 {
/*****************************************************************************
* get time
*****************************************************************************/
void rtc_get (struct rtc_time *tmp)
int rtc_get (struct rtc_time *tmp)
{
RTC5200 *rtc = (RTC5200 *) (CFG_MBAR+0x800);
ulong time, date, time2;
@ -81,6 +81,8 @@ void rtc_get (struct rtc_time *tmp)
debug ( "Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
return 0;
}
/*****************************************************************************

4
drivers/rtc/mpc8xx.c
View File

@ -35,7 +35,7 @@
/* ------------------------------------------------------------------------- */
void rtc_get (struct rtc_time *tmp)
int rtc_get (struct rtc_time *tmp)
{
volatile immap_t *immr = (immap_t *)CFG_IMMR;
ulong tim;
@ -47,6 +47,8 @@ void rtc_get (struct rtc_time *tmp)
debug ( "Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
return 0;
}
void rtc_set (struct rtc_time *tmp)

6
drivers/rtc/pcf8563.c
View File

@ -41,8 +41,9 @@ static unsigned bcd2bin(uchar c);
/* ------------------------------------------------------------------------- */
void rtc_get (struct rtc_time *tmp)
int rtc_get (struct rtc_time *tmp)
{
int rel = 0;
uchar sec, min, hour, mday, wday, mon_cent, year;
sec = rtc_read (0x02);
@ -65,6 +66,7 @@ void rtc_get (struct rtc_time *tmp)
if (sec & 0x80) {
puts ("### Warning: RTC Low Voltage - date/time not reliable\n");
rel = -1;
}
tmp->tm_sec = bcd2bin (sec & 0x7F);
@ -80,6 +82,8 @@ void rtc_get (struct rtc_time *tmp)
debug ( "Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
return rel;
}
void rtc_set (struct rtc_time *tmp)

8
drivers/rtc/rs5c372.c
View File

@ -166,7 +166,7 @@ rs5c372_convert_to_time(struct rtc_time *dt, unsigned char *buf)
/*
* Get the current time from the RTC
*/
void
int
rtc_get (struct rtc_time *tmp)
{
unsigned char buf[RS5C372_RAM_SIZE];
@ -176,7 +176,7 @@ rtc_get (struct rtc_time *tmp)
rs5c372_enable();
if (!setup_done)
return;
return -1;
memset(buf, 0, sizeof(buf));
@ -184,12 +184,12 @@ rtc_get (struct rtc_time *tmp)
ret = rs5c372_readram(buf, RS5C372_RAM_SIZE);
if (ret != 0) {
printf("%s: failed\n", __FUNCTION__);
return;
return -1;
}
rs5c372_convert_to_time(tmp, buf);
return;
return 0;
}
/*

17
drivers/rtc/rx8025.c
View File

@ -96,8 +96,9 @@ static unsigned bcd2bin (uchar c);
/*
* Get the current time from the RTC
*/
void rtc_get (struct rtc_time *tmp)
int rtc_get (struct rtc_time *tmp)
{
int rel = 0;
uchar sec, min, hour, mday, wday, mon, year, ctl2;
uchar buf[16];
@ -118,14 +119,20 @@ void rtc_get (struct rtc_time *tmp)
/* dump status */
ctl2 = rtc_read(RTC_CTL2_REG_ADDR);
if (ctl2 & RTC_CTL2_BIT_PON)
if (ctl2 & RTC_CTL2_BIT_PON) {
printf("RTC: power-on detected\n");
rel = -1;
}
if (ctl2 & RTC_CTL2_BIT_VDET)
if (ctl2 & RTC_CTL2_BIT_VDET) {
printf("RTC: voltage drop detected\n");
rel = -1;
}
if (!(ctl2 & RTC_CTL2_BIT_XST))
if (!(ctl2 & RTC_CTL2_BIT_XST)) {
printf("RTC: oscillator stop detected\n");
rel = -1;
}
tmp->tm_sec = bcd2bin (sec & 0x7F);
tmp->tm_min = bcd2bin (min & 0x7F);
@ -140,6 +147,8 @@ void rtc_get (struct rtc_time *tmp)
DEBUGR ("Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
return rel;
}
/*

4
drivers/rtc/s3c24x0_rtc.c
View File

@ -70,7 +70,7 @@ static unsigned char bin2bcd (unsigned int n)
/* ------------------------------------------------------------------------- */
void rtc_get (struct rtc_time *tmp)
int rtc_get (struct rtc_time *tmp)
{
S3C24X0_RTC * const rtc = S3C24X0_GetBase_RTC();
uchar sec, min, hour, mday, wday, mon, year;
@ -131,6 +131,8 @@ void rtc_get (struct rtc_time *tmp)
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
#endif
return 0;
}
void rtc_set (struct rtc_time *tmp)

4
drivers/rtc/x1205.c
View File

@ -104,7 +104,7 @@ static void rtc_write(int reg, u8 val)
* rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch
* Epoch is initialized as 2000. Time is set to UTC.
*/
void rtc_get(struct rtc_time *tm)
int rtc_get(struct rtc_time *tm)
{
u8 buf[8];
@ -130,6 +130,8 @@ void rtc_get(struct rtc_time *tm)
__FUNCTION__,
tm->tm_sec, tm->tm_min, tm->tm_hour,
tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
return 0;
}
void rtc_set(struct rtc_time *tm)

2
include/rtc.h
View File

@ -52,7 +52,7 @@ struct rtc_time {
int tm_isdst;
};
void rtc_get (struct rtc_time *);
int rtc_get (struct rtc_time *);
void rtc_set (struct rtc_time *);
void rtc_reset (void);

15
post/drivers/rtc.c
View File

@ -28,6 +28,8 @@
*
* The Real Time Clock (RTC) operation is verified by this test.
* The following features are verified:
* o) RTC Power Fault
* This is verified by analyzing the rtc_get() return status.
* o) Time uniformity
* This is verified by reading RTC in polling within
* a short period of time.
@ -96,6 +98,10 @@ int rtc_post_test (int flags)
unsigned int ynl = 1999;
unsigned int yl = 2000;
unsigned int skipped = 0;
int reliable;
/* Time reliability */
reliable = rtc_get (&svtm);
/* Time uniformity */
if (rtc_post_skip (&diff) != 0) {
@ -176,6 +182,15 @@ int rtc_post_test (int flags)
}
rtc_post_restore (&svtm, skipped);
/* If come here, then RTC operates correcty, check the correctness
* of the time it reports.
*/
if (reliable < 0) {
post_log ("RTC Time is not reliable! Power fault? \n");
return -1;
}
return 0;
}