Merge tag 'efi-2020-04-rc2' of https://gitlab.denx.de/u-boot/custodians/u-boot-efi

[oweals/u-boot.git] / drivers / rtc / ds1337.c

diff --git a/drivers/rtc/ds1337.c b/drivers/rtc/ds1337.c
index 58e3966ec7b0937a436e862f3d417b2c13036bc2..9b31048e97261814de2f354bcd545adf9fdd9de6 100644 (file)
--- a/drivers/rtc/ds1337.c
+++ b/drivers/rtc/ds1337.c
@@ -1,25 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2001-2008
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  * Keith Outwater, keith_outwater@mvis.com`
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
  */
 
 /*
@@ -32,21 +15,10 @@
 #include <rtc.h>
 #include <i2c.h>
 
-#if defined(CONFIG_CMD_DATE)
-
-/*---------------------------------------------------------------------*/
-#undef DEBUG_RTC
-
-#ifdef DEBUG_RTC
-#define DEBUGR(fmt,args...) printf(fmt ,##args)
-#else
-#define DEBUGR(fmt,args...)
-#endif
-/*---------------------------------------------------------------------*/
-
 /*
  * 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
@@ -56,6 +28,19 @@
 #define RTC_YR_REG_ADDR                0x6
 #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
@@ -77,9 +62,6 @@
 
 static uchar rtc_read (uchar reg);
 static void rtc_write (uchar reg, uchar val);
-static uchar bin2bcd (unsigned int n);
-static unsigned bcd2bin (uchar c);
-
 
 /*
  * Get the current time from the RTC
@@ -99,7 +81,12 @@ int rtc_get (struct rtc_time *tmp)
        mon_cent = rtc_read (RTC_MON_REG_ADDR);
        year = rtc_read (RTC_YR_REG_ADDR);
 
-       DEBUGR ("Get RTC year: %02x mon/cent: %02x mday: %02x wday: %02x "
+       /* 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);
 
@@ -121,7 +108,7 @@ int rtc_get (struct rtc_time *tmp)
        tmp->tm_yday = 0;
        tmp->tm_isdst= 0;
 
-       DEBUGR ("Get DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",
+       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);
 
@@ -136,7 +123,7 @@ int rtc_set (struct rtc_time *tmp)
 {
        uchar century;
 
-       DEBUGR ("Set DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",
+       debug("Set 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);
 
@@ -160,10 +147,11 @@ int rtc_set (struct rtc_time *tmp)
  * SQW/INTB* pin and program it for 32,768 Hz output. Note that
  * according to the datasheet, turning on the square wave output
  * increases the current drain on the backup battery from about
- * 600 nA to 2uA. Define CONFIG_SYS_RTC_DS1337_NOOSC if you wish to turn
+ * 600 nA to 2uA. Define CONFIG_RTC_DS1337_NOOSC if you wish to turn
  * off the OSC output.
  */
-#ifdef CONFIG_SYS_RTC_DS1337_NOOSC
+
+#ifdef CONFIG_RTC_DS1337_NOOSC
  #define RTC_DS1337_RESET_VAL \
        (RTC_CTL_BIT_INTCN | RTC_CTL_BIT_RS1 | RTC_CTL_BIT_RS2)
 #else
@@ -171,7 +159,17 @@ int rtc_set (struct rtc_time *tmp)
 #endif
 void rtc_reset (void)
 {
+#ifdef CONFIG_RTC_DS1337
        rtc_write (RTC_CTL_REG_ADDR, RTC_DS1337_RESET_VAL);
+#elif defined CONFIG_RTC_DS1388
+       rtc_write(RTC_CTL_REG_ADDR, 0x0); /* hw default */
+#endif
+#ifdef CONFIG_RTC_DS1339_TCR_VAL
+       rtc_write (RTC_TC_REG_ADDR, CONFIG_RTC_DS1339_TCR_VAL);
+#endif
+#ifdef CONFIG_RTC_DS1388_TCR_VAL
+       rtc_write(RTC_TC_REG_ADDR, CONFIG_RTC_DS1388_TCR_VAL);
+#endif
 }
 
 
@@ -190,15 +188,3 @@ static void rtc_write (uchar reg, uchar val)
 {
        i2c_reg_write (CONFIG_SYS_I2C_RTC_ADDR, reg, val);
 }
-
-static unsigned bcd2bin (uchar n)
-{
-       return ((((n >> 4) & 0x0F) * 10) + (n & 0x0F));
-}
-
-static unsigned char bin2bcd (unsigned int n)
-{
-       return (((n / 10) << 4) | (n % 10));
-}
-
-#endif