Drop three-wire serial (TWS) support

[u-boot] / drivers / rtc / rtc4543.c

diff --git a/drivers/rtc/rtc4543.c b/drivers/rtc/rtc4543.c
deleted file mode 100644 (file)
index 8d36edd..0000000
--- a/drivers/rtc/rtc4543.c
+++ /dev/null
@@ -1,101 +0,0 @@
-/*
- * (C) Copyright 2008, 2009
- * Andreas Pfefferle, DENX Software Engineering, ap@denx.de.
- *
- * SPDX-License-Identifier:    GPL-2.0+
- */
-
-#include <asm/io.h>
-#include <common.h>
-#include <command.h>
-#include <config.h>
-#include <rtc.h>
-#include <tws.h>
-
-#if defined(CONFIG_CMD_DATE)
-
-/*
- * Note: The acrobatics below is due to the hideously ingenius idea of
- * the chip designers.  As the chip does not allow register
- * addressing, all values need to be read and written in one go.  Sure
- * enough, the 'wday' field (0-6) is transferred using the economic
- * number of 4 bits right in the middle of the packet.....
- */
-
-int rtc_get(struct rtc_time *tm)
-{
-       int rel = 0;
-       uchar buffer[7];
-
-       memset(buffer, 0, 7);
-
-       /* Read 52 bits into our buffer */
-       tws_read(buffer, 52);
-
-       tm->tm_sec  = bcd2bin( buffer[0] & 0x7F);
-       tm->tm_min  = bcd2bin( buffer[1] & 0x7F);
-       tm->tm_hour = bcd2bin( buffer[2] & 0x3F);
-       tm->tm_wday = bcd2bin( buffer[3] & 0x07);
-       tm->tm_mday = bcd2bin((buffer[3] & 0xF0) >> 4 | (buffer[4] & 0x0F) << 4);
-       tm->tm_mon  = bcd2bin((buffer[4] & 0x30) >> 4 | (buffer[5] & 0x0F) << 4);
-       tm->tm_year = bcd2bin((buffer[5] & 0xF0) >> 4 | (buffer[6] & 0x0F) << 4) + 2000;
-       tm->tm_yday = 0;
-       tm->tm_isdst = 0;
-
-       if (tm->tm_sec & 0x80) {
-               puts("### Warning: RTC Low Voltage - date/time not reliable\n");
-               rel = -1;
-       }
-
-       debug("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;
-}
-
-int rtc_set(struct rtc_time *tm)
-{
-       uchar buffer[7];
-       uchar tmp;
-
-       debug("Set 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);
-
-       memset(buffer, 0, 7);
-       buffer[0] = bin2bcd(tm->tm_sec);
-       buffer[1] = bin2bcd(tm->tm_min);
-       buffer[2] = bin2bcd(tm->tm_hour);
-       buffer[3] = bin2bcd(tm->tm_wday);
-       tmp = bin2bcd(tm->tm_mday);
-       buffer[3] |= (tmp & 0x0F) << 4;
-       buffer[4] =  (tmp & 0xF0) >> 4;
-       tmp = bin2bcd(tm->tm_mon);
-       buffer[4] |= (tmp & 0x0F) << 4;
-       buffer[5] =  (tmp & 0xF0) >> 4;
-       tmp = bin2bcd(tm->tm_year  % 100);
-       buffer[5] |= (tmp & 0x0F) << 4;
-       buffer[6] =  (tmp & 0xF0) >> 4;
-
-       /* Write the resulting 52 bits to device */
-       tws_write(buffer, 52);
-
-       return 0;
-}
-
-void rtc_reset(void)
-{
-       struct rtc_time tmp;
-
-       tmp.tm_sec = 0;
-       tmp.tm_min = 0;
-       tmp.tm_hour = 0;
-       tmp.tm_wday = 4;
-       tmp.tm_mday = 1;
-       tmp.tm_mon = 1;
-       tmp.tm_year = 2000;
-       rtc_set(&tmp);
-}
-
-#endif