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>master
Simon Glass
7 years ago
committed by
Tom Rini
parent
2c6ebff1e1
commit
ab3c4fbe8a
@ -1,101 +0,0 @@ |
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/*
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* (C) Copyright 2008, 2009 |
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* Andreas Pfefferle, DENX Software Engineering, ap@denx.de. |
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#include <asm/io.h> |
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#include <common.h> |
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#include <command.h> |
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#include <config.h> |
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#include <rtc.h> |
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#include <tws.h> |
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#if defined(CONFIG_CMD_DATE) |
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/*
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* Note: The acrobatics below is due to the hideously ingenius idea of |
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* the chip designers. As the chip does not allow register |
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* addressing, all values need to be read and written in one go. Sure |
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* enough, the 'wday' field (0-6) is transferred using the economic |
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* number of 4 bits right in the middle of the packet..... |
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*/ |
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int rtc_get(struct rtc_time *tm) |
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{ |
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int rel = 0; |
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uchar buffer[7]; |
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memset(buffer, 0, 7); |
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/* Read 52 bits into our buffer */ |
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tws_read(buffer, 52); |
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tm->tm_sec = bcd2bin( buffer[0] & 0x7F); |
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tm->tm_min = bcd2bin( buffer[1] & 0x7F); |
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tm->tm_hour = bcd2bin( buffer[2] & 0x3F); |
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tm->tm_wday = bcd2bin( buffer[3] & 0x07); |
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tm->tm_mday = bcd2bin((buffer[3] & 0xF0) >> 4 | (buffer[4] & 0x0F) << 4); |
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tm->tm_mon = bcd2bin((buffer[4] & 0x30) >> 4 | (buffer[5] & 0x0F) << 4); |
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tm->tm_year = bcd2bin((buffer[5] & 0xF0) >> 4 | (buffer[6] & 0x0F) << 4) + 2000; |
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tm->tm_yday = 0; |
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tm->tm_isdst = 0; |
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if (tm->tm_sec & 0x80) { |
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puts("### Warning: RTC Low Voltage - date/time not reliable\n"); |
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rel = -1; |
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} |
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debug("Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n", |
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tm->tm_year, tm->tm_mon, tm->tm_mday, tm->tm_wday, |
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tm->tm_hour, tm->tm_min, tm->tm_sec); |
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return rel; |
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} |
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int rtc_set(struct rtc_time *tm) |
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{ |
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uchar buffer[7]; |
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uchar tmp; |
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debug("Set DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n", |
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tm->tm_year, tm->tm_mon, tm->tm_mday, tm->tm_wday, |
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tm->tm_hour, tm->tm_min, tm->tm_sec); |
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memset(buffer, 0, 7); |
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buffer[0] = bin2bcd(tm->tm_sec); |
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buffer[1] = bin2bcd(tm->tm_min); |
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buffer[2] = bin2bcd(tm->tm_hour); |
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buffer[3] = bin2bcd(tm->tm_wday); |
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tmp = bin2bcd(tm->tm_mday); |
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buffer[3] |= (tmp & 0x0F) << 4; |
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buffer[4] = (tmp & 0xF0) >> 4; |
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tmp = bin2bcd(tm->tm_mon); |
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buffer[4] |= (tmp & 0x0F) << 4; |
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buffer[5] = (tmp & 0xF0) >> 4; |
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tmp = bin2bcd(tm->tm_year % 100); |
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buffer[5] |= (tmp & 0x0F) << 4; |
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buffer[6] = (tmp & 0xF0) >> 4; |
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/* Write the resulting 52 bits to device */ |
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tws_write(buffer, 52); |
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return 0; |
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} |
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void rtc_reset(void) |
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{ |
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struct rtc_time tmp; |
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tmp.tm_sec = 0; |
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tmp.tm_min = 0; |
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tmp.tm_hour = 0; |
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tmp.tm_wday = 4; |
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tmp.tm_mday = 1; |
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tmp.tm_mon = 1; |
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tmp.tm_year = 2000; |
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rtc_set(&tmp); |
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} |
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#endif |
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@ -1,8 +0,0 @@ |
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#
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# (C) Copyright 2009
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# Detlev Zundel, DENX Software Engineering, dzu@denx.de.
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#
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# SPDX-License-Identifier: GPL-2.0+
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#
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obj-$(CONFIG_SOFT_TWS) += soft_tws.o
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@ -1,94 +0,0 @@ |
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/*
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* (C) Copyright 2009 |
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* Detlev Zundel, DENX Software Engineering, dzu@denx.de. |
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#define TWS_IMPLEMENTATION |
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#include <common.h> |
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/*=====================================================================*/ |
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/* Public Functions */ |
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/*=====================================================================*/ |
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/*-----------------------------------------------------------------------
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* Read bits |
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*/ |
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int tws_read(uchar *buffer, int len) |
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{ |
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int rem = len; |
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uchar accu, shift; |
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debug("tws_read: buffer %p len %d\n", buffer, len); |
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/* Configure the data pin for input */ |
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tws_data_config_output(0); |
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/* Disable WR, i.e. setup a read */ |
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tws_wr(0); |
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udelay(1); |
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/* Rise CE */ |
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tws_ce(1); |
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udelay(1); |
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for (; rem > 0; ) { |
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for (shift = 0, accu = 0; |
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(rem > 0) && (shift < 8); |
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rem--, shift++) { |
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tws_clk(1); |
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udelay(10); |
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accu |= (tws_data_read() << shift); /* LSB first */ |
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tws_clk(0); |
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udelay(10); |
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} |
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*buffer++ = accu; |
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} |
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/* Lower CE */ |
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tws_ce(0); |
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return len - rem; |
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} |
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/*-----------------------------------------------------------------------
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* Write bits |
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*/ |
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int tws_write(uchar *buffer, int len) |
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{ |
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int rem = len; |
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uchar accu, shift; |
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debug("tws_write: buffer %p len %d\n", buffer, len); |
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/* Configure the data pin for output */ |
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tws_data_config_output(1); |
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/* Enable WR, i.e. setup a write */ |
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tws_wr(1); |
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udelay(1); |
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/* Rise CE */ |
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tws_ce(1); |
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udelay(1); |
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for (; rem > 0; ) { |
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for (shift = 0, accu = *buffer++; |
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(rem > 0) && (shift < 8); |
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rem--, shift++) { |
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tws_data(accu & 0x01); /* LSB first */ |
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tws_clk(1); |
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udelay(10); |
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tws_clk(0); |
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udelay(10); |
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accu >>= 1; |
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} |
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} |
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/* Lower CE */ |
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tws_ce(0); |
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return len - rem; |
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} |
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@ -1,21 +0,0 @@ |
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/*
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* (C) Copyright 2009 |
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* Detlev Zundel, DENX Software Engineering, dzu@denx.de. |
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#ifndef _TWS_H_ |
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#define _TWS_H_ |
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/*
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* Read/Write interface: |
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* buffer: Where to read/write the data |
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* len: How many bits to read/write |
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* |
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* Returns: 0 on success, not 0 on failure |
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*/ |
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int tws_read(uchar *buffer, int len); |
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int tws_write(uchar *buffer, int len); |
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#endif /* _TWS_H_ */ |
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