rtc: Remove unused drivers

These RTC drivers are currently unused and reference other unused CONFIG
variables, so remove them.

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

5 files changed, 0 insertions, 526 deletions

diff --git a/README b/README
index efb1d37df9..5ab042a2de 100644
--- a/README
+++ b/README
@@ -473,7 +473,6 @@ The following options need to be configured:
 		CONFIG_RTC_DS1337	- use Maxim, Inc. DS1337 RTC
 		CONFIG_RTC_DS1338	- use Maxim, Inc. DS1338 RTC
 		CONFIG_RTC_DS1339	- use Maxim, Inc. DS1339 RTC
-		CONFIG_RTC_DS164x	- use Dallas DS164x RTC
 		CONFIG_RTC_ISL1208	- use Intersil ISL1208 RTC
 		CONFIG_RTC_MAX6900	- use Maxim, Inc. MAX6900 RTC
 		CONFIG_RTC_DS1337_NOOSC	- Turn off the OSC output for DS1337
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index 009dd9d28c..2089086551 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -17,9 +17,6 @@ obj-$(CONFIG_RTC_DS1339) += ds1307.o
 obj-$(CONFIG_RTC_DS1337) += ds1337.o
 obj-$(CONFIG_RTC_DS1374) += ds1374.o
 obj-$(CONFIG_RTC_DS1388) += ds1337.o
-obj-$(CONFIG_RTC_DS1556) += ds1556.o
-obj-$(CONFIG_RTC_DS164x) += ds164x.o
-obj-$(CONFIG_RTC_DS174x) += ds174x.o
 obj-$(CONFIG_RTC_DS3231) += ds3231.o
 obj-$(CONFIG_RTC_DS3232) += ds3232.o
 obj-$(CONFIG_RTC_EMULATION) += emul_rtc.o
diff --git a/drivers/rtc/ds1556.c b/drivers/rtc/ds1556.c
deleted file mode 100644
index 687b32937a..0000000000
--- a/drivers/rtc/ds1556.c
+++ /dev/null
@@ -1,179 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * (C) Copyright 2002
- * ARIO Data Networks, Inc. dchiu@ariodata.com
- *
- * modified for DS1556:
- * Frank Panno <fpanno@delphintech.com>, Delphin Technology AG
- *
- * Based on MontaVista DS1743 code and U-Boot mc146818 code
- */
-
-/*
- * Date & Time support for the DS1556 RTC
- */
-
-/*#define	RTC_DEBUG */
-
-#include <common.h>
-#include <command.h>
-#include <rtc.h>
-
-#if defined(CONFIG_CMD_DATE)
-
-static uchar rtc_read( unsigned int addr );
-static void  rtc_write( unsigned int addr, uchar val);
-
-#define RTC_BASE		( CONFIG_SYS_NVRAM_SIZE + CONFIG_SYS_NVRAM_BASE_ADDR )
-
-#define RTC_YEAR		( RTC_BASE + 0xf )
-#define RTC_MONTH		( RTC_BASE + 0xe )
-#define RTC_DAY_OF_MONTH	( RTC_BASE + 0xd )
-#define RTC_DAY_OF_WEEK		( RTC_BASE + 0xc )
-#define RTC_HOURS		( RTC_BASE + 0xb )
-#define RTC_MINUTES		( RTC_BASE + 0xa )
-#define RTC_SECONDS		( RTC_BASE + 0x9 )
-#define RTC_CENTURY		( RTC_BASE + 0x8 )
-
-#define RTC_CONTROLA		RTC_CENTURY
-#define RTC_CONTROLB		RTC_SECONDS
-#define RTC_CONTROLC		RTC_BASE
-
-#define RTC_CA_WRITE		0x80
-#define RTC_CA_READ		0x40
-
-#define RTC_CB_OSC_DISABLE	0x80
-
-#define RTC_CC_BATTERY_FLAG	0x10
-#define RTC_CC_FREQ_TEST	0x40
-
-/* ------------------------------------------------------------------------- */
-
-int rtc_get( struct rtc_time *tmp )
-{
-	uchar sec, min, hour;
-	uchar mday, wday, mon, year;
-
-	int century;
-
-	uchar reg_a;
-
-	reg_a = rtc_read( RTC_CONTROLA );
-	/* lock clock registers for read */
-	rtc_write( RTC_CONTROLA, ( reg_a | RTC_CA_READ ));
-
-	sec     = rtc_read( RTC_SECONDS );
-	min     = rtc_read( RTC_MINUTES );
-	hour    = rtc_read( RTC_HOURS );
-	mday    = rtc_read( RTC_DAY_OF_MONTH );
-	wday    = rtc_read( RTC_DAY_OF_WEEK );
-	mon     = rtc_read( RTC_MONTH );
-	year    = rtc_read( RTC_YEAR );
-	century = rtc_read( RTC_CENTURY );
-
-	/* unlock clock registers after read */
-	rtc_write( RTC_CONTROLA, ( reg_a & ~RTC_CA_READ ));
-
-#ifdef RTC_DEBUG
-	printf( "Get RTC year: %02x mon/cent: %02x mon: %02x mday: %02x wday: %02x "
-		"hr: %02x min: %02x sec: %02x\n",
-		year, century, mon, mday, wday,
-		hour, min, sec );
-#endif
-	tmp->tm_sec  = bcd2bin( sec  & 0x7F );
-	tmp->tm_min  = bcd2bin( min  & 0x7F );
-	tmp->tm_hour = bcd2bin( hour & 0x3F );
-	tmp->tm_mday = bcd2bin( mday & 0x3F );
-	tmp->tm_mon  = bcd2bin( mon & 0x1F );
-	tmp->tm_wday = bcd2bin( wday & 0x07 );
-
-	/* glue year from century and year in century */
-	tmp->tm_year = bcd2bin( year ) +
-		( bcd2bin( century & 0x3F ) * 100 );
-
-	tmp->tm_yday = 0;
-	tmp->tm_isdst= 0;
-#ifdef RTC_DEBUG
-	printf( "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 );
-#endif
-	return 0;
-}
-
-int rtc_set( struct rtc_time *tmp )
-{
-	uchar reg_a;
-#ifdef RTC_DEBUG
-	printf( "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);
-#endif
-	/* lock clock registers for write */
-	reg_a = rtc_read( RTC_CONTROLA );
-	rtc_write( RTC_CONTROLA, ( reg_a | RTC_CA_WRITE ));
-
-	rtc_write( RTC_MONTH, bin2bcd( tmp->tm_mon ));
-
-	rtc_write( RTC_DAY_OF_WEEK, bin2bcd( tmp->tm_wday ));
-	rtc_write( RTC_DAY_OF_MONTH, bin2bcd( tmp->tm_mday ));
-	rtc_write( RTC_HOURS, bin2bcd( tmp->tm_hour ));
-	rtc_write( RTC_MINUTES, bin2bcd( tmp->tm_min ));
-	rtc_write( RTC_SECONDS, bin2bcd( tmp->tm_sec ));
-
-	/* break year up into century and year in century */
-	rtc_write( RTC_YEAR, bin2bcd( tmp->tm_year % 100 ));
-	rtc_write( RTC_CENTURY, bin2bcd( tmp->tm_year / 100 ));
-
-	/* unlock clock registers after read */
-	rtc_write( RTC_CONTROLA, ( reg_a  & ~RTC_CA_WRITE ));
-
-	return 0;
-}
-
-void rtc_reset (void)
-{
-	uchar reg_a, reg_b, reg_c;
-
-	reg_a = rtc_read( RTC_CONTROLA );
-	reg_b = rtc_read( RTC_CONTROLB );
-
-	if ( reg_b & RTC_CB_OSC_DISABLE )
-	{
-		printf( "real-time-clock was stopped. Now starting...\n" );
-		reg_a |= RTC_CA_WRITE;
-		reg_b &= ~RTC_CB_OSC_DISABLE;
-
-		rtc_write( RTC_CONTROLA, reg_a );
-		rtc_write( RTC_CONTROLB, reg_b );
-	}
-
-	/* make sure read/write clock register bits are cleared */
-	reg_a &= ~( RTC_CA_WRITE | RTC_CA_READ );
-	rtc_write( RTC_CONTROLA, reg_a );
-
-	reg_c = rtc_read( RTC_CONTROLC );
-	if (( reg_c & RTC_CC_BATTERY_FLAG ) == 0 )
-		printf( "RTC battery low. Clock setting may not be reliable.\n" );
-}
-
-/* ------------------------------------------------------------------------- */
-
-static uchar rtc_read( unsigned int addr )
-{
-	uchar val = *(volatile unsigned char*)(addr);
-#ifdef RTC_DEBUG
-	printf( "rtc_read: %x:%x\n", addr, val );
-#endif
-	return( val );
-}
-
-static void rtc_write( unsigned int addr, uchar val )
-{
-#ifdef RTC_DEBUG
-	printf( "rtc_write: %x:%x\n", addr, val );
-#endif
-	*(volatile unsigned char*)(addr) = val;
-}
-
-#endif
diff --git a/drivers/rtc/ds164x.c b/drivers/rtc/ds164x.c
deleted file mode 100644
index f8707892e7..0000000000
--- a/drivers/rtc/ds164x.c
+++ /dev/null
@@ -1,171 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * (C) Copyright 2002
- * ARIO Data Networks, Inc. dchiu@ariodata.com
- *
- * modified for DS164x:
- * The LEOX team <team@leox.org>, http://www.leox.org
- *
- * Based on MontaVista DS1743 code and U-Boot mc146818 code
- */
-
-/*
- * Date & Time support for the DS164x RTC
- */
-
-/* #define	RTC_DEBUG */
-
-#include <common.h>
-#include <command.h>
-#include <rtc.h>
-
-
-static uchar    rtc_read(unsigned int addr );
-static void     rtc_write(unsigned int addr, uchar val);
-
-#define RTC_EPOCH                 2000	/* century */
-
-/*
- * DS164x registers layout
- */
-#define RTC_BASE		( CONFIG_SYS_NVRAM_BASE_ADDR + CONFIG_SYS_NVRAM_SIZE )
-
-#define RTC_YEAR		( RTC_BASE + 0x07 )
-#define RTC_MONTH		( RTC_BASE + 0x06 )
-#define RTC_DAY_OF_MONTH	( RTC_BASE + 0x05 )
-#define RTC_DAY_OF_WEEK		( RTC_BASE + 0x04 )
-#define RTC_HOURS		( RTC_BASE + 0x03 )
-#define RTC_MINUTES		( RTC_BASE + 0x02 )
-#define RTC_SECONDS		( RTC_BASE + 0x01 )
-#define RTC_CONTROL		( RTC_BASE + 0x00 )
-
-#define RTC_CONTROLA		RTC_CONTROL	/* W=bit6, R=bit5 */
-#define   RTC_CA_WRITE		  0x80
-#define   RTC_CA_READ		  0x40
-#define RTC_CONTROLB		RTC_SECONDS	/* OSC=bit7       */
-#define   RTC_CB_OSC_DISABLE	  0x80
-#define RTC_CONTROLC		RTC_DAY_OF_WEEK	/* FT=bit6        */
-#define   RTC_CC_FREQ_TEST	  0x40
-
-/* ------------------------------------------------------------------------- */
-
-int rtc_get( struct rtc_time *tmp )
-{
-	uchar sec, min, hour;
-	uchar mday, wday, mon, year;
-
-	uchar reg_a;
-
-	reg_a = rtc_read( RTC_CONTROLA );
-	/* lock clock registers for read */
-	rtc_write( RTC_CONTROLA, ( reg_a | RTC_CA_READ ));
-
-	sec     = rtc_read( RTC_SECONDS );
-	min     = rtc_read( RTC_MINUTES );
-	hour    = rtc_read( RTC_HOURS );
-	mday    = rtc_read( RTC_DAY_OF_MONTH );
-	wday    = rtc_read( RTC_DAY_OF_WEEK );
-	mon     = rtc_read( RTC_MONTH );
-	year    = rtc_read( RTC_YEAR );
-
-	/* unlock clock registers after read */
-	rtc_write( RTC_CONTROLA, ( reg_a & ~RTC_CA_READ ));
-
-#ifdef RTC_DEBUG
-	printf( "Get RTC year: %02x mon: %02x mday: %02x wday: %02x "
-		"hr: %02x min: %02x sec: %02x\n",
-		year, mon, mday, wday,
-		hour, min, sec );
-#endif
-	tmp->tm_sec  = bcd2bin( sec  & 0x7F );
-	tmp->tm_min  = bcd2bin( min  & 0x7F );
-	tmp->tm_hour = bcd2bin( hour & 0x3F );
-	tmp->tm_mday = bcd2bin( mday & 0x3F );
-	tmp->tm_mon  = bcd2bin( mon  & 0x1F );
-	tmp->tm_wday = bcd2bin( wday & 0x07 );
-
-	/* glue year in century (2000) */
-	tmp->tm_year = bcd2bin( year ) + RTC_EPOCH;
-
-	tmp->tm_yday = 0;
-	tmp->tm_isdst= 0;
-#ifdef RTC_DEBUG
-	printf( "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 );
-#endif
-
-	return 0;
-}
-
-int rtc_set( struct rtc_time *tmp )
-{
-	uchar reg_a;
-
-#ifdef RTC_DEBUG
-	printf( "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);
-#endif
-	/* lock clock registers for write */
-	reg_a = rtc_read( RTC_CONTROLA );
-	rtc_write( RTC_CONTROLA, ( reg_a | RTC_CA_WRITE ));
-
-	rtc_write( RTC_MONTH, bin2bcd( tmp->tm_mon ));
-
-	rtc_write( RTC_DAY_OF_WEEK, bin2bcd( tmp->tm_wday ));
-	rtc_write( RTC_DAY_OF_MONTH, bin2bcd( tmp->tm_mday ));
-	rtc_write( RTC_HOURS, bin2bcd( tmp->tm_hour ));
-	rtc_write( RTC_MINUTES, bin2bcd( tmp->tm_min ));
-	rtc_write( RTC_SECONDS, bin2bcd( tmp->tm_sec ));
-
-	/* break year in century */
-	rtc_write( RTC_YEAR, bin2bcd( tmp->tm_year % 100 ));
-
-	/* unlock clock registers after read */
-	rtc_write( RTC_CONTROLA, ( reg_a  & ~RTC_CA_WRITE ));
-
-	return 0;
-}
-
-void rtc_reset (void)
-{
-	uchar reg_a, reg_b;
-
-	reg_a = rtc_read( RTC_CONTROLA );
-	reg_b = rtc_read( RTC_CONTROLB );
-
-	if ( reg_b & RTC_CB_OSC_DISABLE )
-	{
-		printf( "real-time-clock was stopped. Now starting...\n" );
-		reg_a |= RTC_CA_WRITE;
-		reg_b &= ~RTC_CB_OSC_DISABLE;
-
-		rtc_write( RTC_CONTROLA, reg_a );
-		rtc_write( RTC_CONTROLB, reg_b );
-	}
-
-	/* make sure read/write clock register bits are cleared */
-	reg_a &= ~( RTC_CA_WRITE | RTC_CA_READ );
-	rtc_write( RTC_CONTROLA, reg_a );
-}
-
-/* ------------------------------------------------------------------------- */
-
-static uchar rtc_read( unsigned int addr )
-{
-	uchar val = *(volatile unsigned char*)(addr);
-
-#ifdef RTC_DEBUG
-	printf( "rtc_read: %x:%x\n", addr, val );
-#endif
-	return( val );
-}
-
-static void rtc_write( unsigned int addr, uchar val )
-{
-#ifdef RTC_DEBUG
-	printf( "rtc_write: %x:%x\n", addr, val );
-#endif
-	*(volatile unsigned char*)(addr) = val;
-}
diff --git a/drivers/rtc/ds174x.c b/drivers/rtc/ds174x.c
deleted file mode 100644
index 94f943d97a..0000000000
--- a/drivers/rtc/ds174x.c
+++ /dev/null
@@ -1,172 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * (C) Copyright 2001
- * ARIO Data Networks, Inc. dchiu@ariodata.com
- *
- * Based on MontaVista DS1743 code and U-Boot mc146818 code
- */
-
-/*
- * Date & Time support for the DS174x RTC
- */
-
-/*#define	DEBUG*/
-
-#include <common.h>
-#include <command.h>
-#include <rtc.h>
-
-static uchar rtc_read( unsigned int addr );
-static void  rtc_write( unsigned int addr, uchar val);
-
-#define RTC_BASE		( CONFIG_SYS_NVRAM_SIZE + CONFIG_SYS_NVRAM_BASE_ADDR )
-
-#define RTC_YEAR		( RTC_BASE + 7 )
-#define RTC_MONTH		( RTC_BASE + 6 )
-#define RTC_DAY_OF_MONTH	( RTC_BASE + 5 )
-#define RTC_DAY_OF_WEEK		( RTC_BASE + 4 )
-#define RTC_HOURS		( RTC_BASE + 3 )
-#define RTC_MINUTES		( RTC_BASE + 2 )
-#define RTC_SECONDS		( RTC_BASE + 1 )
-#define RTC_CENTURY		( RTC_BASE + 0 )
-
-#define RTC_CONTROLA		RTC_CENTURY
-#define RTC_CONTROLB		RTC_SECONDS
-#define RTC_CONTROLC		RTC_DAY_OF_WEEK
-
-#define RTC_CA_WRITE		0x80
-#define RTC_CA_READ		0x40
-
-#define RTC_CB_OSC_DISABLE	0x80
-
-#define RTC_CC_BATTERY_FLAG	0x80
-#define RTC_CC_FREQ_TEST	0x40
-
-/* ------------------------------------------------------------------------- */
-
-int rtc_get( struct rtc_time *tmp )
-{
-	uchar sec, min, hour;
-	uchar mday, wday, mon, year;
-
-	int century;
-
-	uchar reg_a;
-
-	reg_a = rtc_read( RTC_CONTROLA );
-	/* lock clock registers for read */
-	rtc_write( RTC_CONTROLA, ( reg_a | RTC_CA_READ ));
-
-	sec     = rtc_read( RTC_SECONDS );
-	min     = rtc_read( RTC_MINUTES );
-	hour    = rtc_read( RTC_HOURS );
-	mday    = rtc_read( RTC_DAY_OF_MONTH );
-	wday    = rtc_read( RTC_DAY_OF_WEEK );
-	mon     = rtc_read( RTC_MONTH );
-	year    = rtc_read( RTC_YEAR );
-	century = rtc_read( RTC_CENTURY );
-
-	/* unlock clock registers after read */
-	rtc_write( RTC_CONTROLA, ( reg_a & ~RTC_CA_READ ));
-
-#ifdef RTC_DEBUG
-	printf( "Get RTC year: %02x mon/cent: %02x mday: %02x wday: %02x "
-		"hr: %02x min: %02x sec: %02x\n",
-		year, mon_cent, mday, wday,
-		hour, min, sec );
-#endif
-	tmp->tm_sec  = bcd2bin( sec  & 0x7F );
-	tmp->tm_min  = bcd2bin( min  & 0x7F );
-	tmp->tm_hour = bcd2bin( hour & 0x3F );
-	tmp->tm_mday = bcd2bin( mday & 0x3F );
-	tmp->tm_mon  = bcd2bin( mon & 0x1F );
-	tmp->tm_wday = bcd2bin( wday & 0x07 );
-
-	/* glue year from century and year in century */
-	tmp->tm_year = bcd2bin( year ) +
-		( bcd2bin( century & 0x3F ) * 100 );
-
-	tmp->tm_yday = 0;
-	tmp->tm_isdst= 0;
-#ifdef RTC_DEBUG
-	printf( "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 );
-#endif
-	return 0;
-}
-
-int rtc_set( struct rtc_time *tmp )
-{
-	uchar reg_a;
-#ifdef RTC_DEBUG
-	printf( "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);
-#endif
-	/* lock clock registers for write */
-	reg_a = rtc_read( RTC_CONTROLA );
-	rtc_write( RTC_CONTROLA, ( reg_a | RTC_CA_WRITE ));
-
-	rtc_write( RTC_MONTH, bin2bcd( tmp->tm_mon ));
-
-	rtc_write( RTC_DAY_OF_WEEK, bin2bcd( tmp->tm_wday ));
-	rtc_write( RTC_DAY_OF_MONTH, bin2bcd( tmp->tm_mday ));
-	rtc_write( RTC_HOURS, bin2bcd( tmp->tm_hour ));
-	rtc_write( RTC_MINUTES, bin2bcd( tmp->tm_min ));
-	rtc_write( RTC_SECONDS, bin2bcd( tmp->tm_sec ));
-
-	/* break year up into century and year in century */
-	rtc_write( RTC_YEAR, bin2bcd( tmp->tm_year % 100 ));
-	rtc_write( RTC_CENTURY, bin2bcd( tmp->tm_year / 100 ));
-
-	/* unlock clock registers after read */
-	rtc_write( RTC_CONTROLA, ( reg_a  & ~RTC_CA_WRITE ));
-
-	return 0;
-}
-
-void rtc_reset (void)
-{
-	uchar reg_a, reg_b, reg_c;
-
-	reg_a = rtc_read( RTC_CONTROLA );
-	reg_b = rtc_read( RTC_CONTROLB );
-
-	if ( reg_b & RTC_CB_OSC_DISABLE )
-	{
-		printf( "real-time-clock was stopped. Now starting...\n" );
-		reg_a |= RTC_CA_WRITE;
-		reg_b &= ~RTC_CB_OSC_DISABLE;
-
-		rtc_write( RTC_CONTROLA, reg_a );
-		rtc_write( RTC_CONTROLB, reg_b );
-	}
-
-	/* make sure read/write clock register bits are cleared */
-	reg_a &= ~( RTC_CA_WRITE | RTC_CA_READ );
-	rtc_write( RTC_CONTROLA, reg_a );
-
-	reg_c = rtc_read( RTC_CONTROLC );
-	if (( reg_c & RTC_CC_BATTERY_FLAG ) == 0 )
-		printf( "RTC battery low. Clock setting may not be reliable.\n" );
-}
-
-/* ------------------------------------------------------------------------- */
-
-static uchar rtc_read( unsigned int addr )
-{
-	uchar val = in8( addr );
-#ifdef RTC_DEBUG
-	printf( "rtc_read: %x:%x\n", addr, val );
-#endif
-	return( val );
-}
-
-static void rtc_write( unsigned int addr, uchar val )
-{
-#ifdef RTC_DEBUG
-	printf( "rtc_write: %x:%x\n", addr, val );
-#endif
-	out8( addr, val );
-}