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SIDK_S1SBP6A: fix to support rtc range from 0 to 0xEFFFFFFF 

BP6A do not support from 0 to 0xEFFFFFFF in SOC.
This patch fixes it in s/w manner.

Signed-off-by: Heuisam Kwag <heuisam@samsung.com>
pull/13880/head
Heuisam Kwag 2020-11-09 20:04:33 +09:00
parent f661c2389c
commit eb32b25c8a
3 changed files with 43 additions and 1 deletions
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29
targets/TARGET_Samsung/TARGET_SIDK_S1SBP6A/device/s1sbp6a_rtc.c
View File

@ -40,6 +40,35 @@ uint32_t bp6a_rtc_bin2bcd(uint8_t bin)
return ((bin / 10u) << 4u) + (bin % 10);
}
void bp6a_rtc_offset_write(uint32_t offset, uint32_t flag)
{
uint8_t i;
bp6a_rtc_unlock(true);
for (i = 0; i < 4; i++)
putreg32(0x40019000 + 0xB8 + i * 4, ((offset >> (i * 8)) & 0xFF));
putreg32(0x40019000 + 0x90, flag);
bp6a_rtc_unlock(false);
}
uint32_t bp6a_rtc_read_offset(uint32_t *flag)
{
uint8_t i;
uint32_t offset = 0;
bp6a_rtc_unlock(true);
for (i = 0; i < 4; i++)
offset |= getreg32(0x40019000 + 0xB8 + i * 4) << (i * 8);
*flag = getreg32(0x40019000 + 0x90);
bp6a_rtc_unlock(false);
return offset;
}
void bp6a_rtc_getdatetime(struct rtc_bcd_s *rtc)
{
bp6a_rtc_unlock(true);

3
targets/TARGET_Samsung/TARGET_SIDK_S1SBP6A/device/s1sbp6a_rtc.h
View File

@ -36,5 +36,6 @@ void bp6a_rtc_getdatetime(struct rtc_bcd_s *rtc);
void bp6a_rtc_setdatetime(struct rtc_bcd_s *rtc);
void bp6a_rtc_init(void);
void bp6a_set_rtc_delay(uint32_t delay);
uint32_t bp6a_rtc_read_offset(uint32_t *flag);
void bp6a_rtc_offset_write(uint32_t offset, uint32_t flag);
#endif /*__S1SBP6A_RTC_H */

12
targets/TARGET_Samsung/TARGET_SIDK_S1SBP6A/rtc_api.c
View File

@ -30,8 +30,10 @@
#include "mbed_debug.h"
#define BP6A_RTC_START_TIME 946684800
#define BP6A_MAX_REG 0x0FFFFFFF
static bool rtc_initialized = false;
static bool g_before2000 = false;
static time_t g_rtc_offset = 0;
void rtc_init(void)
{
@ -40,6 +42,7 @@ void rtc_init(void)
bp6a_set_rtc_delay((uint32_t)((float)sys_clk * 2 / 32789));
bp6a_rtc_init();
g_rtc_offset = bp6a_rtc_read_offset(&g_before2000);
rtc_initialized = true;
}
}
@ -73,6 +76,8 @@ time_t rtc_read(void)
return 0;
}
t += g_rtc_offset;
if (g_before2000) {
t -= BP6A_RTC_START_TIME;
}
@ -84,6 +89,12 @@ void rtc_write(time_t t)
struct rtc_bcd_s rtc_val;
struct tm timeinfo;
if (t > BP6A_MAX_REG) {
g_rtc_offset = t;
t = 0;
} else
g_rtc_offset = 0;
/*BP6A : The implicit number of thousands place is 20.*/
if (t < BP6A_RTC_START_TIME) {
g_before2000 = true;
@ -92,6 +103,7 @@ void rtc_write(time_t t)
g_before2000 = false;
}
bp6a_rtc_offset_write(g_rtc_offset, (uint32_t)g_before2000);
if (_rtc_localtime(t, &timeinfo, RTC_4_YEAR_LEAP_YEAR_SUPPORT) == false) {
return;