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Drop three-wire serial (TWS) support

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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>
This commit is contained in:
Simon Glass
2017-05-17 03:25:04 -06:00
committed by Tom Rini
parent 2c6ebff1e1
commit ab3c4fbe8a
9 changed files with 0 additions and 309 deletions
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1
drivers/rtc/Makefile
View File

@@ -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

101
drivers/rtc/rtc4543.c
View File

@@ -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