drivers/rtc : move rtc drivers to drivers/rtc

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

1 files changed, 0 insertions, 438 deletions

diff --git a/rtc/ds1306.c b/rtc/ds1306.c
deleted file mode 100644
index 89e433d..0000000
--- a/rtc/ds1306.c
+++ /dev/null
@@ -1,438 +0,0 @@
-/*
- * (C) Copyright 2002 SIXNET, dge@sixnetio.com.
- *
- * (C) Copyright 2004, Li-Pro.Net <www.li-pro.net>
- * Stephan Linz <linz@li-pro.net>
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-/*
- * Date & Time support for DS1306 RTC using SPI:
- *
- *    - SXNI855T:    it uses its own soft SPI here in this file
- *    - all other:   use the external spi_xfer() function
- *                   (see include/spi.h)
- */
-
-#include <common.h>
-#include <command.h>
-#include <rtc.h>
-#include <spi.h>
-
-#if defined(CONFIG_RTC_DS1306) && defined(CONFIG_CMD_DATE)
-
-#define	RTC_SECONDS		0x00
-#define	RTC_MINUTES		0x01
-#define	RTC_HOURS		0x02
-#define	RTC_DAY_OF_WEEK		0x03
-#define	RTC_DATE_OF_MONTH	0x04
-#define	RTC_MONTH		0x05
-#define	RTC_YEAR		0x06
-
-#define	RTC_SECONDS_ALARM0	0x07
-#define	RTC_MINUTES_ALARM0	0x08
-#define	RTC_HOURS_ALARM0	0x09
-#define	RTC_DAY_OF_WEEK_ALARM0	0x0a
-
-#define	RTC_SECONDS_ALARM1	0x0b
-#define	RTC_MINUTES_ALARM1	0x0c
-#define	RTC_HOURS_ALARM1	0x0d
-#define	RTC_DAY_OF_WEEK_ALARM1	0x0e
-
-#define	RTC_CONTROL		0x0f
-#define	RTC_STATUS		0x10
-#define	RTC_TRICKLE_CHARGER	0x11
-
-#define	RTC_USER_RAM_BASE	0x20
-
-/*
- * External table of chip select functions (see the appropriate board
- * support for the actual definition of the table).
- */
-extern spi_chipsel_type spi_chipsel[];
-extern int spi_chipsel_cnt;
-
-static unsigned int bin2bcd (unsigned int n);
-static unsigned char bcd2bin (unsigned char c);
-
-/* ************************************************************************* */
-#ifdef CONFIG_SXNI855T		/* !!! SHOULD BE CHANGED TO NEW CODE !!! */
-
-static void soft_spi_send (unsigned char n);
-static unsigned char soft_spi_read (void);
-static void init_spi (void);
-
-/*-----------------------------------------------------------------------
- * Definitions
- */
-
-#define	PB_SPISCK	0x00000002	/* PB 30 */
-#define PB_SPIMOSI	0x00000004	/* PB 29 */
-#define PB_SPIMISO	0x00000008	/* PB 28 */
-#define PB_SPI_CE	0x00010000	/* PB 15 */
-
-/* ------------------------------------------------------------------------- */
-
-/* read clock time from DS1306 and return it in *tmp */
-void rtc_get (struct rtc_time *tmp)
-{
-	volatile immap_t *immap = (immap_t *) CFG_IMMR;
-	unsigned char spi_byte;	/* Data Byte */
-
-	init_spi ();		/* set port B for software SPI */
-
-	/* Now we can enable the DS1306 RTC */
-	immap->im_cpm.cp_pbdat |= PB_SPI_CE;
-	udelay (10);
-
-	/* Shift out the address (0) of the time in the Clock Chip */
-	soft_spi_send (0);
-
-	/* Put the clock readings into the rtc_time structure */
-	tmp->tm_sec = bcd2bin (soft_spi_read ());	/* Read seconds */
-	tmp->tm_min = bcd2bin (soft_spi_read ());	/* Read minutes */
-
-	/* Hours are trickier */
-	spi_byte = soft_spi_read ();	/* Read Hours into temporary value */
-	if (spi_byte & 0x40) {
-		/* 12 hour mode bit is set (time is in 1-12 format) */
-		if (spi_byte & 0x20) {
-			/* since PM we add 11 to get 0-23 for hours */
-			tmp->tm_hour = (bcd2bin (spi_byte & 0x1F)) + 11;
-		} else {
-			/* since AM we subtract 1 to get 0-23 for hours */
-			tmp->tm_hour = (bcd2bin (spi_byte & 0x1F)) - 1;
-		}
-	} else {
-		/* Otherwise, 0-23 hour format */
-		tmp->tm_hour = (bcd2bin (spi_byte & 0x3F));
-	}
-
-	soft_spi_read ();	/* Read and discard Day of week */
-	tmp->tm_mday = bcd2bin (soft_spi_read ());	/* Read Day of the Month */
-	tmp->tm_mon = bcd2bin (soft_spi_read ());	/* Read Month */
-
-	/* Read Year and convert to this century */
-	tmp->tm_year = bcd2bin (soft_spi_read ()) + 2000;
-
-	/* Now we can disable the DS1306 RTC */
-	immap->im_cpm.cp_pbdat &= ~PB_SPI_CE;	/* Disable DS1306 Chip */
-	udelay (10);
-
-	GregorianDay (tmp);	/* Determine the day of week */
-
-	debug ("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);
-}
-
-/* ------------------------------------------------------------------------- */
-
-/* set clock time in DS1306 RTC and in MPC8xx RTC */
-void rtc_set (struct rtc_time *tmp)
-{
-	volatile immap_t *immap = (immap_t *) CFG_IMMR;
-
-	init_spi ();		/* set port B for software SPI */
-
-	/* Now we can enable the DS1306 RTC */
-	immap->im_cpm.cp_pbdat |= PB_SPI_CE;	/* Enable DS1306 Chip */
-	udelay (10);
-
-	/* First disable write protect in the clock chip control register */
-	soft_spi_send (0x8F);	/* send address of the control register */
-	soft_spi_send (0x00);	/* send control register contents */
-
-	/* Now disable the DS1306 to terminate the write */
-	immap->im_cpm.cp_pbdat &= ~PB_SPI_CE;
-	udelay (10);
-
-	/* Now enable the DS1306 to initiate a new write */
-	immap->im_cpm.cp_pbdat |= PB_SPI_CE;
-	udelay (10);
-
-	/* Next, send the address of the clock time write registers */
-	soft_spi_send (0x80);	/* send address of the first time register */
-
-	/* Use Burst Mode to send all of the time data to the clock */
-	bin2bcd (tmp->tm_sec);
-	soft_spi_send (bin2bcd (tmp->tm_sec));	/* Send Seconds */
-	soft_spi_send (bin2bcd (tmp->tm_min));	/* Send Minutes */
-	soft_spi_send (bin2bcd (tmp->tm_hour));	/* Send Hour */
-	soft_spi_send (bin2bcd (tmp->tm_wday));	/* Send Day of the Week */
-	soft_spi_send (bin2bcd (tmp->tm_mday));	/* Send Day of Month */
-	soft_spi_send (bin2bcd (tmp->tm_mon));	/* Send Month */
-	soft_spi_send (bin2bcd (tmp->tm_year - 2000));	/* Send Year */
-
-	/* Now we can disable the Clock chip to terminate the burst write */
-	immap->im_cpm.cp_pbdat &= ~PB_SPI_CE;	/* Disable DS1306 Chip */
-	udelay (10);
-
-	/* Now we can enable the Clock chip to initiate a new write */
-	immap->im_cpm.cp_pbdat |= PB_SPI_CE;	/* Enable DS1306 Chip */
-	udelay (10);
-
-	/* First we Enable write protect in the clock chip control register */
-	soft_spi_send (0x8F);	/* send address of the control register */
-	soft_spi_send (0x40);	/* send out Control Register contents */
-
-	/* Now disable the DS1306 */
-	immap->im_cpm.cp_pbdat &= ~PB_SPI_CE;	/*  Disable DS1306 Chip */
-	udelay (10);
-
-	/* Set standard MPC8xx clock to the same time so Linux will
-	 * see the time even if it doesn't have a DS1306 clock driver.
-	 * This helps with experimenting with standard kernels.
-	 */
-	{
-		ulong tim;
-
-		tim = mktime (tmp->tm_year, tmp->tm_mon, tmp->tm_mday,
-			      tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
-
-		immap->im_sitk.sitk_rtck = KAPWR_KEY;
-		immap->im_sit.sit_rtc = tim;
-	}
-
-	debug ("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);
-}
-
-/* ------------------------------------------------------------------------- */
-
-/* Initialize Port B for software SPI */
-static void init_spi (void)
-{
-	volatile immap_t *immap = (immap_t *) CFG_IMMR;
-
-	/* Force output pins to begin at logic 0 */
-	immap->im_cpm.cp_pbdat &= ~(PB_SPI_CE | PB_SPIMOSI | PB_SPISCK);
-
-	/* Set these 3 signals as outputs */
-	immap->im_cpm.cp_pbdir |= (PB_SPIMOSI | PB_SPI_CE | PB_SPISCK);
-
-	immap->im_cpm.cp_pbdir &= ~PB_SPIMISO;	/* Make MISO pin an input */
-	udelay (10);
-}
-
-/* ------------------------------------------------------------------------- */
-
-/* NOTE: soft_spi_send() assumes that the I/O lines are configured already */
-static void soft_spi_send (unsigned char n)
-{
-	volatile immap_t *immap = (immap_t *) CFG_IMMR;
-	unsigned char bitpos;	/* bit position to receive */
-	unsigned char i;	/* Loop Control */
-
-	/* bit position to send, start with most significant bit */
-	bitpos = 0x80;
-
-	/* Send 8 bits to software SPI */
-	for (i = 0; i < 8; i++) {	/* Loop for 8 bits */
-		immap->im_cpm.cp_pbdat |= PB_SPISCK;	/* Raise SCK */
-
-		if (n & bitpos)
-			immap->im_cpm.cp_pbdat |= PB_SPIMOSI;	/* Set MOSI to 1 */
-		else
-			immap->im_cpm.cp_pbdat &= ~PB_SPIMOSI;	/* Set MOSI to 0 */
-		udelay (10);
-
-		immap->im_cpm.cp_pbdat &= ~PB_SPISCK;	/* Lower SCK */
-		udelay (10);
-
-		bitpos >>= 1;	/* Shift for next bit position */
-	}
-}
-
-/* ------------------------------------------------------------------------- */
-
-/* NOTE: soft_spi_read() assumes that the I/O lines are configured already */
-static unsigned char soft_spi_read (void)
-{
-	volatile immap_t *immap = (immap_t *) CFG_IMMR;
-
-	unsigned char spi_byte = 0;	/* Return value, assume success */
-	unsigned char bitpos;	/* bit position to receive */
-	unsigned char i;	/* Loop Control */
-
-	/* bit position to receive, start with most significant bit */
-	bitpos = 0x80;
-
-	/* Read 8 bits here */
-	for (i = 0; i < 8; i++) {	/* Do 8 bits in loop */
-		immap->im_cpm.cp_pbdat |= PB_SPISCK;	/* Raise SCK */
-		udelay (10);
-		if (immap->im_cpm.cp_pbdat & PB_SPIMISO)	/* Get a bit of data */
-			spi_byte |= bitpos;	/* Set data accordingly */
-		immap->im_cpm.cp_pbdat &= ~PB_SPISCK;	/* Lower SCK */
-		udelay (10);
-		bitpos >>= 1;	/* Shift for next bit position */
-	}
-
-	return spi_byte;	/* Return the byte read */
-}
-
-/* ------------------------------------------------------------------------- */
-
-void rtc_reset (void)
-{
-	return;			/* nothing to do */
-}
-
-#else  /* not CONFIG_SXNI855T */
-/* ************************************************************************* */
-
-static unsigned char rtc_read (unsigned char reg);
-static void rtc_write (unsigned char reg, unsigned char val);
-
-/* read clock time from DS1306 and return it in *tmp */
-void rtc_get (struct rtc_time *tmp)
-{
-	unsigned char sec, min, hour, mday, wday, mon, year;
-
-	sec = rtc_read (RTC_SECONDS);
-	min = rtc_read (RTC_MINUTES);
-	hour = rtc_read (RTC_HOURS);
-	mday = rtc_read (RTC_DATE_OF_MONTH);
-	wday = rtc_read (RTC_DAY_OF_WEEK);
-	mon = rtc_read (RTC_MONTH);
-	year = rtc_read (RTC_YEAR);
-
-	debug ("Get RTC year: %02x mon: %02x mday: %02x wday: %02x "
-	       "hr: %02x min: %02x sec: %02x\n",
-	       year, mon, mday, wday, hour, min, sec);
-	debug ("Alarms[0]: wday: %02x hour: %02x min: %02x sec: %02x\n",
-	       rtc_read (RTC_DAY_OF_WEEK_ALARM0),
-	       rtc_read (RTC_HOURS_ALARM0),
-	       rtc_read (RTC_MINUTES_ALARM0), rtc_read (RTC_SECONDS_ALARM0));
-	debug ("Alarms[1]: wday: %02x hour: %02x min: %02x sec: %02x\n",
-	       rtc_read (RTC_DAY_OF_WEEK_ALARM1),
-	       rtc_read (RTC_HOURS_ALARM1),
-	       rtc_read (RTC_MINUTES_ALARM1), rtc_read (RTC_SECONDS_ALARM1));
-
-	tmp->tm_sec = bcd2bin (sec & 0x7F);	/* convert Seconds */
-	tmp->tm_min = bcd2bin (min & 0x7F);	/* convert Minutes */
-
-	/* convert Hours */
-	tmp->tm_hour = (hour & 0x40)
-		? ((hour & 0x20)	/* 12 hour mode */
-		   ? bcd2bin (hour & 0x1F) + 11	/* PM */
-		   : bcd2bin (hour & 0x1F) - 1	/* AM */
-		)
-		: bcd2bin (hour & 0x3F);	/* 24 hour mode */
-
-	tmp->tm_mday = bcd2bin (mday & 0x3F);	/* convert Day of the Month */
-	tmp->tm_mon = bcd2bin (mon & 0x1F);	/* convert Month */
-	tmp->tm_year = bcd2bin (year) + 2000;	/* convert Year */
-	tmp->tm_wday = bcd2bin (wday & 0x07) - 1;	/* convert Day of the Week */
-	tmp->tm_yday = 0;
-	tmp->tm_isdst = 0;
-
-	debug ("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);
-}
-
-/* ------------------------------------------------------------------------- */
-
-/* set clock time from *tmp in DS1306 RTC */
-void rtc_set (struct rtc_time *tmp)
-{
-	debug ("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);
-
-	rtc_write (RTC_SECONDS, bin2bcd (tmp->tm_sec));
-	rtc_write (RTC_MINUTES, bin2bcd (tmp->tm_min));
-	rtc_write (RTC_HOURS, bin2bcd (tmp->tm_hour));
-	rtc_write (RTC_DAY_OF_WEEK, bin2bcd (tmp->tm_wday + 1));
-	rtc_write (RTC_DATE_OF_MONTH, bin2bcd (tmp->tm_mday));
-	rtc_write (RTC_MONTH, bin2bcd (tmp->tm_mon));
-	rtc_write (RTC_YEAR, bin2bcd (tmp->tm_year - 2000));
-}
-
-/* ------------------------------------------------------------------------- */
-
-/* reset the DS1306 */
-void rtc_reset (void)
-{
-	/* clear the control register */
-	rtc_write (RTC_CONTROL, 0x00);	/* 1st step: reset WP */
-	rtc_write (RTC_CONTROL, 0x00);	/* 2nd step: reset 1Hz, AIE1, AIE0 */
-
-	/* reset all alarms */
-	rtc_write (RTC_SECONDS_ALARM0, 0x00);
-	rtc_write (RTC_SECONDS_ALARM1, 0x00);
-	rtc_write (RTC_MINUTES_ALARM0, 0x00);
-	rtc_write (RTC_MINUTES_ALARM1, 0x00);
-	rtc_write (RTC_HOURS_ALARM0, 0x00);
-	rtc_write (RTC_HOURS_ALARM1, 0x00);
-	rtc_write (RTC_DAY_OF_WEEK_ALARM0, 0x00);
-	rtc_write (RTC_DAY_OF_WEEK_ALARM1, 0x00);
-}
-
-/* ------------------------------------------------------------------------- */
-
-static unsigned char rtc_read (unsigned char reg)
-{
-	unsigned char dout[2];	/* SPI Output Data Bytes */
-	unsigned char din[2];	/* SPI Input Data Bytes */
-
-	dout[0] = reg;
-
-	if (spi_xfer (spi_chipsel[CFG_SPI_RTC_DEVID], 16, dout, din) != 0) {
-		return 0;
-	} else {
-		return din[1];
-	}
-}
-
-/* ------------------------------------------------------------------------- */
-
-static void rtc_write (unsigned char reg, unsigned char val)
-{
-	unsigned char dout[2];	/* SPI Output Data Bytes */
-	unsigned char din[2];	/* SPI Input Data Bytes */
-
-	dout[0] = 0x80 | reg;
-	dout[1] = val;
-
-	spi_xfer (spi_chipsel[CFG_SPI_RTC_DEVID], 16, dout, din);
-}
-
-#endif /* end of code exclusion (see #ifdef CONFIG_SXNI855T above) */
-
-/* ------------------------------------------------------------------------- */
-
-static unsigned char bcd2bin (unsigned char n)
-{
-	return ((((n >> 4) & 0x0F) * 10) + (n & 0x0F));
-}
-
-/* ------------------------------------------------------------------------- */
-
-static unsigned int bin2bcd (unsigned int n)
-{
-	return (((n / 10) << 4) | (n % 10));
-}
-/* ------------------------------------------------------------------------- */
-
-#endif