Add support for DS1388.

Support for DS1388 is added by extending the DS1337 driver. DS1388 is
similar to DS1337. The time registers are offset by 1 (due to support
for hundreds of seconds), and there is no century bit.
The configuration and trickle charge registers are also different.
Tested on hardware with Freescale P2010 and DS1388.

Signed-off-by: Kenth Eriksson <kenth.eriksson@transmode.com>

diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index faf4fcdb872e979459ce08cf732c1235aede2d4f..9cfdbf975311957b4b4bf1c21b34e47572cbd8c6 100644 (file)
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -38,6 +38,7 @@ COBJS-$(CONFIG_RTC_DS1307) += ds1307.o
 COBJS-$(CONFIG_RTC_DS1338) += ds1307.o
 COBJS-$(CONFIG_RTC_DS1337) += ds1337.o
 COBJS-$(CONFIG_RTC_DS1374) += ds1374.o
+COBJS-$(CONFIG_RTC_DS1388) += ds1337.o
 COBJS-$(CONFIG_RTC_DS1556) += ds1556.o
 COBJS-$(CONFIG_RTC_DS164x) += ds164x.o
 COBJS-$(CONFIG_RTC_DS174x) += ds174x.o

diff --git a/drivers/rtc/ds1337.c b/drivers/rtc/ds1337.c
index 5bb9f942c167ebe51d0d5b6374b82b16ab8d7c7b..4c98732e619acb16ff9fcd6c993494deac09562c 100644 (file)
--- a/drivers/rtc/ds1337.c
+++ b/drivers/rtc/ds1337.c
@@ -37,6 +37,7 @@
 /*
  * RTC register addresses
  */
+#if defined CONFIG_RTC_DS1337
 #define RTC_SEC_REG_ADDR       0x0
 #define RTC_MIN_REG_ADDR       0x1
 #define RTC_HR_REG_ADDR                0x2
@@ -47,6 +48,18 @@
 #define RTC_CTL_REG_ADDR       0x0e
 #define RTC_STAT_REG_ADDR      0x0f
 #define RTC_TC_REG_ADDR                0x10
+#elif defined CONFIG_RTC_DS1388
+#define RTC_SEC_REG_ADDR       0x1
+#define RTC_MIN_REG_ADDR       0x2
+#define RTC_HR_REG_ADDR                0x3
+#define RTC_DAY_REG_ADDR       0x4
+#define RTC_DATE_REG_ADDR      0x5
+#define RTC_MON_REG_ADDR       0x6
+#define RTC_YR_REG_ADDR                0x7
+#define RTC_CTL_REG_ADDR       0x0c
+#define RTC_STAT_REG_ADDR      0x0b
+#define RTC_TC_REG_ADDR                0x0a
+#endif
 
 /*
  * RTC control register bits
@@ -87,6 +100,11 @@ int rtc_get (struct rtc_time *tmp)
        mon_cent = rtc_read (RTC_MON_REG_ADDR);
        year = rtc_read (RTC_YR_REG_ADDR);
 
+       /* No century bit, assume year 2000 */
+#ifdef CONFIG_RTC_DS1388
+       mon_cent |= 0x80;
+#endif
+
        debug("Get RTC year: %02x mon/cent: %02x mday: %02x wday: %02x "
                "hr: %02x min: %02x sec: %02x control: %02x status: %02x\n",
                year, mon_cent, mday, wday, hour, min, sec, control, status);
@@ -151,6 +169,7 @@ int rtc_set (struct rtc_time *tmp)
  * 600 nA to 2uA. Define CONFIG_SYS_RTC_DS1337_NOOSC if you wish to turn
  * off the OSC output.
  */
+
 #ifdef CONFIG_SYS_RTC_DS1337_NOOSC
  #define RTC_DS1337_RESET_VAL \
        (RTC_CTL_BIT_INTCN | RTC_CTL_BIT_RS1 | RTC_CTL_BIT_RS2)
@@ -159,10 +178,17 @@ int rtc_set (struct rtc_time *tmp)
 #endif
 void rtc_reset (void)
 {
+#ifdef CONFIG_SYS_RTC_DS1337
        rtc_write (RTC_CTL_REG_ADDR, RTC_DS1337_RESET_VAL);
+#elif defined CONFIG_SYS_RTC_DS1388
+       rtc_write(RTC_CTL_REG_ADDR, 0x0); /* hw default */
+#endif
 #ifdef CONFIG_SYS_DS1339_TCR_VAL
        rtc_write (RTC_TC_REG_ADDR, CONFIG_SYS_DS1339_TCR_VAL);
 #endif
+#ifdef CONFIG_SYS_DS1388_TCR_VAL
+       rtc_write(RTC_TC_REG_ADDR, CONFIG_SYS_DS1388_TCR_VAL);
+#endif
 }