Drop three-wire serial (TWS) support

This subsystem has not been converted to driver model, there is only one
driver and only one board that uses it. Drop it and its CONFIG option.

Also drop the rtc4543 RTC driver since it uses TWS.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>

2 files changed, 0 insertions, 102 deletions

diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index 87c3d9c..438681d 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -48,7 +48,6 @@ obj-$(CONFIG_RTC_PCF2127) += pcf2127.o
 obj-$(CONFIG_RTC_PL031) += pl031.o
 obj-$(CONFIG_RTC_PT7C4338) += pt7c4338.o
 obj-$(CONFIG_RTC_RS5C372A) += rs5c372.o
-obj-$(CONFIG_RTC_RTC4543) += rtc4543.o
 obj-$(CONFIG_RTC_RV3029) += rv3029.o
 obj-$(CONFIG_RTC_RX8025) += rx8025.o
 obj-$(CONFIG_RTC_S3C24X0) += s3c24x0_rtc.o
diff --git a/drivers/rtc/rtc4543.c b/drivers/rtc/rtc4543.c
deleted file mode 100644
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