path: root/packages/linux/linux-dht-walnut/remove-todc.patch

Index: working-2.6/arch/powerpc/sysdev/todc.c
===================================================================
--- working-2.6.orig/arch/powerpc/sysdev/todc.c	2006-08-25 14:27:11.000000000 +1000
+++ /dev/null	1970-01-01 00:00:00.000000000 +0000
@@ -1,392 +0,0 @@ 
-/*
- * Time of Day Clock support for the M48T35, M48T37, M48T59, and MC146818
- * Real Time Clocks/Timekeepers.
- *
- * Author: Mark A. Greer <mgreer@mvista.com>
- *
- * 2001-2004 (c) MontaVista, Software, Inc.  This file is licensed under
- * the terms of the GNU General Public License version 2.  This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
- */
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/time.h>
-#include <linux/timex.h>
-#include <linux/bcd.h>
-#include <linux/mc146818rtc.h>
-
-#include <asm/machdep.h>
-#include <asm/io.h>
-#include <asm/time.h>
-#include <asm/todc.h>
-
-/*
- * Depending on the hardware on your board and your board design, the
- * RTC/NVRAM may be accessed either directly (like normal memory) or via
- * address/data registers.  If your board uses the direct method, set
- * 'nvram_data' to the base address of your nvram and leave 'nvram_as0' and
- * 'nvram_as1' NULL.  If your board uses address/data regs to access nvram,
- * set 'nvram_as0' to the address of the lower byte, set 'nvram_as1' to the
- * address of the upper byte (leave NULL if using mc146818), and set
- * 'nvram_data' to the address of the 8-bit data register.
- *
- * Note: Even though the documentation for the various RTC chips say that it
- * 	 take up to a second before it starts updating once the 'R' bit is
- * 	 cleared, they always seem to update even though we bang on it many
- * 	 times a second.  This is true, except for the Dallas Semi 1746/1747
- * 	 (possibly others).  Those chips seem to have a real problem whenever
- * 	 we set the 'R' bit before reading them, they basically stop counting.
- * 	 					--MAG
- */
-
-/*
- * 'todc_info' should be initialized in your *_setup.c file to
- * point to a fully initialized 'todc_info_t' structure.
- * This structure holds all the register offsets for your particular
- * TODC/RTC chip.
- * TODC_ALLOC()/TODC_INIT() will allocate and initialize this table for you.
- */
-
-#ifdef	RTC_FREQ_SELECT
-#undef	RTC_FREQ_SELECT
-#define	RTC_FREQ_SELECT		control_b	/* Register A */
-#endif
-
-#ifdef	RTC_CONTROL
-#undef	RTC_CONTROL
-#define	RTC_CONTROL		control_a	/* Register B */
-#endif
-
-#ifdef	RTC_INTR_FLAGS
-#undef	RTC_INTR_FLAGS
-#define	RTC_INTR_FLAGS		watchdog	/* Register C */
-#endif
-
-#ifdef	RTC_VALID
-#undef	RTC_VALID
-#define	RTC_VALID		interrupts	/* Register D */
-#endif
-
-/* Access routines when RTC accessed directly (like normal memory) */
-u_char
-todc_direct_read_val(int addr)
-{
-	return readb((void __iomem *)(todc_info->nvram_data + addr));
-}
-
-void
-todc_direct_write_val(int addr, unsigned char val)
-{
-	writeb(val, (void __iomem *)(todc_info->nvram_data + addr));
-	return;
-}
-
-/* Access routines for accessing m48txx type chips via addr/data regs */
-u_char
-todc_m48txx_read_val(int addr)
-{
-	outb(addr, todc_info->nvram_as0);
-	outb(addr>>todc_info->as0_bits, todc_info->nvram_as1);
-	return inb(todc_info->nvram_data);
-}
-
-void
-todc_m48txx_write_val(int addr, unsigned char val)
-{
-	outb(addr, todc_info->nvram_as0);
-	outb(addr>>todc_info->as0_bits, todc_info->nvram_as1);
-	outb(val, todc_info->nvram_data);
-	return;
-}
-
-/* Access routines for accessing mc146818 type chips via addr/data regs */
-u_char
-todc_mc146818_read_val(int addr)
-{
-	outb_p(addr, todc_info->nvram_as0);
-	return inb_p(todc_info->nvram_data);
-}
-
-void
-todc_mc146818_write_val(int addr, unsigned char val)
-{
-	outb_p(addr, todc_info->nvram_as0);
-	outb_p(val, todc_info->nvram_data);
-}
-
-
-/*
- * Routines to make RTC chips with NVRAM buried behind an addr/data pair
- * have the NVRAM and clock regs appear at the same level.
- * The NVRAM will appear to start at addr 0 and the clock regs will appear
- * to start immediately after the NVRAM (actually, start at offset
- * todc_info->nvram_size).
- */
-static inline u_char
-todc_read_val(int addr)
-{
-	u_char	val;
-
-	if (todc_info->sw_flags & TODC_FLAG_2_LEVEL_NVRAM) {
-		if (addr < todc_info->nvram_size) { /* NVRAM */
-			ppc_md.rtc_write_val(todc_info->nvram_addr_reg, addr);
-			val = ppc_md.rtc_read_val(todc_info->nvram_data_reg);
-		} else { /* Clock Reg */
-			addr -= todc_info->nvram_size;
-			val = ppc_md.rtc_read_val(addr);
-		}
-	} else
-		val = ppc_md.rtc_read_val(addr);
-
-	return val;
-}
-
-static inline void
-todc_write_val(int addr, u_char val)
-{
-	if (todc_info->sw_flags & TODC_FLAG_2_LEVEL_NVRAM) {
-		if (addr < todc_info->nvram_size) { /* NVRAM */
-			ppc_md.rtc_write_val(todc_info->nvram_addr_reg, addr);
-			ppc_md.rtc_write_val(todc_info->nvram_data_reg, val);
-		} else { /* Clock Reg */
-			addr -= todc_info->nvram_size;
-			ppc_md.rtc_write_val(addr, val);
-		}
-	} else
-		ppc_md.rtc_write_val(addr, val);
-}
-
-/*
- * TODC routines
- *
- * There is some ugly stuff in that there are assumptions for the mc146818.
- *
- * Assumptions:
- *	- todc_info->control_a has the offset as mc146818 Register B reg
- *	- todc_info->control_b has the offset as mc146818 Register A reg
- *	- m48txx control reg's write enable or 'W' bit is same as
- *	  mc146818 Register B 'SET' bit (i.e., 0x80)
- *
- * These assumptions were made to make the code simpler.
- */
-long __init
-todc_time_init(void)
-{
-	u_char	cntl_b;
-
-	if (!ppc_md.rtc_read_val)
-		ppc_md.rtc_read_val = ppc_md.nvram_read_val;
-	if (!ppc_md.rtc_write_val)
-		ppc_md.rtc_write_val = ppc_md.nvram_write_val;
-
-	cntl_b = todc_read_val(todc_info->control_b);
-
-	if (todc_info->rtc_type == TODC_TYPE_MC146818) {
-		if ((cntl_b & 0x70) != 0x20) {
-			printk(KERN_INFO "TODC real-time-clock was stopped."
-				"  Now starting...");
-			cntl_b &= ~0x70;
-			cntl_b |= 0x20;
-		}
-
-		todc_write_val(todc_info->control_b, cntl_b);
-	} else if (todc_info->rtc_type == TODC_TYPE_DS17285) {
-		u_char mode;
-
-		mode = todc_read_val(TODC_TYPE_DS17285_CNTL_A);
-		/* Make sure countdown clear is not set */
-		mode &= ~0x40;
-		/* Enable oscillator, extended register set */
-		mode |= 0x30;
-		todc_write_val(TODC_TYPE_DS17285_CNTL_A, mode);
-
-	} else if (todc_info->rtc_type == TODC_TYPE_DS1501) {
-		u_char	month;
-
-		todc_info->enable_read = TODC_DS1501_CNTL_B_TE;
-		todc_info->enable_write = TODC_DS1501_CNTL_B_TE;
-
-		month = todc_read_val(todc_info->month);
-
-		if ((month & 0x80) == 0x80) {
-			printk(KERN_INFO "TODC %s %s\n",
-				"real-time-clock was stopped.",
-				"Now starting...");
-			month &= ~0x80;
-			todc_write_val(todc_info->month, month);
-		}
-
-		cntl_b &= ~TODC_DS1501_CNTL_B_TE;
-		todc_write_val(todc_info->control_b, cntl_b);
-	} else { /* must be a m48txx type */
-		u_char	cntl_a;
-
-		todc_info->enable_read = TODC_MK48TXX_CNTL_A_R;
-		todc_info->enable_write = TODC_MK48TXX_CNTL_A_W;
-
-		cntl_a = todc_read_val(todc_info->control_a);
-
-		/* Check & clear STOP bit in control B register */
-		if (cntl_b & TODC_MK48TXX_DAY_CB) {
-			printk(KERN_INFO "TODC %s %s\n",
-				"real-time-clock was stopped.",
-				"Now starting...");
-
-			cntl_a |= todc_info->enable_write;
-			cntl_b &= ~TODC_MK48TXX_DAY_CB;/* Start Oscil */
-
-			todc_write_val(todc_info->control_a, cntl_a);
-			todc_write_val(todc_info->control_b, cntl_b);
-		}
-
-		/* Make sure READ & WRITE bits are cleared. */
-		cntl_a &= ~(todc_info->enable_write | todc_info->enable_read);
-		todc_write_val(todc_info->control_a, cntl_a);
-	}
-
-	return 0;
-}
-
-/*
- * There is some ugly stuff in that there are assumptions that for a mc146818,
- * the todc_info->control_a has the offset of the mc146818 Register B reg and
- * that the register'ss 'SET' bit is the same as the m48txx's write enable
- * bit in the control register of the m48txx (i.e., 0x80).
- *
- * It was done to make the code look simpler.
- */
-void
-todc_get_rtc_time(struct rtc_time *tm)
-{
-	uint	year = 0, mon = 0, mday = 0, hour = 0, min = 0, sec = 0;
-	uint	limit, i;
-	u_char	save_control, uip = 0;
-	extern void GregorianDay(struct rtc_time *);
-
-	spin_lock(&rtc_lock);
-	save_control = todc_read_val(todc_info->control_a);
-
-	if (todc_info->rtc_type != TODC_TYPE_MC146818) {
-		limit = 1;
-
-		switch (todc_info->rtc_type) {
-		case TODC_TYPE_DS1553:
-		case TODC_TYPE_DS1557:
-		case TODC_TYPE_DS1743:
-		case TODC_TYPE_DS1746:	/* XXXX BAD HACK -> FIX */
-		case TODC_TYPE_DS1747:
-		case TODC_TYPE_DS17285:
-			break;
-		default:
-			todc_write_val(todc_info->control_a,
-				(save_control | todc_info->enable_read));
-		}
-	} else
-		limit = 100000000;
-
-	for (i=0; i<limit; i++) {
-		if (todc_info->rtc_type == TODC_TYPE_MC146818)
-			uip = todc_read_val(todc_info->RTC_FREQ_SELECT);
-
-		sec = todc_read_val(todc_info->seconds) & 0x7f;
-		min = todc_read_val(todc_info->minutes) & 0x7f;
-		hour = todc_read_val(todc_info->hours) & 0x3f;
-		mday = todc_read_val(todc_info->day_of_month) & 0x3f;
-		mon = todc_read_val(todc_info->month) & 0x1f;
-		year = todc_read_val(todc_info->year) & 0xff;
-
-		if (todc_info->rtc_type == TODC_TYPE_MC146818) {
-			uip |= todc_read_val(todc_info->RTC_FREQ_SELECT);
-			if ((uip & RTC_UIP) == 0)
-				break;
-		}
-	}
-
-	if (todc_info->rtc_type != TODC_TYPE_MC146818) {
-		switch (todc_info->rtc_type) {
-		case TODC_TYPE_DS1553:
-		case TODC_TYPE_DS1557:
-		case TODC_TYPE_DS1743:
-		case TODC_TYPE_DS1746:	/* XXXX BAD HACK -> FIX */
-		case TODC_TYPE_DS1747:
-		case TODC_TYPE_DS17285:
-			break;
-		default:
-			save_control &= ~(todc_info->enable_read);
-			todc_write_val(todc_info->control_a, save_control);
-		}
-	}
-	spin_unlock(&rtc_lock);
-
-	if ((todc_info->rtc_type != TODC_TYPE_MC146818)
-			|| ((save_control & RTC_DM_BINARY) == 0)
-			|| RTC_ALWAYS_BCD) {
-		BCD_TO_BIN(sec);
-		BCD_TO_BIN(min);
-		BCD_TO_BIN(hour);
-		BCD_TO_BIN(mday);
-		BCD_TO_BIN(mon);
-		BCD_TO_BIN(year);
-	}
-
-	if ((year + 1900) < 1970) {
-		year += 100;
-	}
-
-	tm->tm_sec = sec;
-	tm->tm_min = min;
-	tm->tm_hour = hour;
-	tm->tm_mday = mday;
-	tm->tm_mon = mon;
-	tm->tm_year = year;
-
-	GregorianDay(tm);
-}
-
-int
-todc_set_rtc_time(struct rtc_time *tm)
-{
-	u_char save_control, save_freq_select = 0;
-
-	spin_lock(&rtc_lock);
-	save_control = todc_read_val(todc_info->control_a);
-
-	/* Assuming MK48T59_RTC_CA_WRITE & RTC_SET are equal */
-	todc_write_val(todc_info->control_a,
-		(save_control | todc_info->enable_write));
-	save_control &= ~(todc_info->enable_write); /* in case it was set */
-
-	if (todc_info->rtc_type == TODC_TYPE_MC146818) {
-		save_freq_select = todc_read_val(todc_info->RTC_FREQ_SELECT);
-		todc_write_val(todc_info->RTC_FREQ_SELECT,
-			save_freq_select | RTC_DIV_RESET2);
-	}
-
-	if ((todc_info->rtc_type != TODC_TYPE_MC146818)
-			|| ((save_control & RTC_DM_BINARY) == 0)
-			|| RTC_ALWAYS_BCD) {
-		BIN_TO_BCD(tm->tm_sec);
-		BIN_TO_BCD(tm->tm_min);
-		BIN_TO_BCD(tm->tm_hour);
-		BIN_TO_BCD(tm->tm_mon);
-		BIN_TO_BCD(tm->tm_mday);
-		BIN_TO_BCD(tm->tm_year);
-	}
-
-	todc_write_val(todc_info->seconds, tm->tm_sec);
-	todc_write_val(todc_info->minutes, tm->tm_min);
-	todc_write_val(todc_info->hours, tm->tm_hour);
-	todc_write_val(todc_info->month, tm->tm_mon);
-	todc_write_val(todc_info->day_of_month, tm->tm_mday);
-	todc_write_val(todc_info->year, tm->tm_year);
-
-	todc_write_val(todc_info->control_a, save_control);
-
-	if (todc_info->rtc_type == TODC_TYPE_MC146818)
-		todc_write_val(todc_info->RTC_FREQ_SELECT, save_freq_select);
-
-	spin_unlock(&rtc_lock);
-	return 0;
-}
Index: working-2.6/include/asm-powerpc/todc.h
===================================================================
--- working-2.6.orig/include/asm-powerpc/todc.h	2006-08-25 14:27:15.000000000 +1000
+++ /dev/null	1970-01-01 00:00:00.000000000 +0000
@@ -1,487 +0,0 @@ 
-/*
- * Definitions for the M48Txx and mc146818 series of Time of day/Real Time
- * Clock chips.
- *
- * Author: Mark A. Greer <mgreer@mvista.com>
- *
- * 2001 (c) MontaVista, Software, Inc.  This file is licensed under
- * the terms of the GNU General Public License version 2.  This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
- */
-
-/*
- * Support for the M48T37/M48T59/.../mc146818 Real Time Clock chips.
- * Purpose is to make one generic file that handles all of these chips instead
- * of every platform implementing the same code over & over again.
- */
-
-#ifndef __PPC_KERNEL_TODC_H
-#define __PPC_KERNEL_TODC_H
-
-typedef struct {
-	uint rtc_type;		/* your particular chip */
-
-	/*
-	 * Following are the addresses of the AS0, AS1, and DATA registers
-	 * of these chips.  Note that these are board-specific.
-	 */
-	unsigned int nvram_as0;
-	unsigned int nvram_as1;
-	unsigned int nvram_data;
-
-	/*
-	 * Define bits to stop external set of regs from changing so
-	 * the chip can be read/written reliably.
-	 */
-	unsigned char enable_read;
-	unsigned char enable_write;
-
-	/*
-	 * Following is the number of AS0 address bits.  This is normally
-	 * 8 but some bad hardware routes address lines incorrectly.
-	 */
-	int as0_bits;
-
-	int nvram_size;	/* Size of NVRAM on chip */
-	int sw_flags;	/* Software control flags */
-
-	/* Following are the register offsets for the particular chip */
-	int year;
-	int month;
-	int day_of_month;
-	int day_of_week;
-	int hours;
-	int minutes;
-	int seconds;
-	int control_b;
-	int control_a;
-	int watchdog;
-	int interrupts;
-	int alarm_date;
-	int alarm_hour;
-	int alarm_minutes;
-	int alarm_seconds;
-	int century;
-	int flags;
-
-	/*
-	 * Some RTC chips have their NVRAM buried behind a addr/data pair of
-	 * regs on the first level/clock registers.  The following fields
-	 * are the addresses for those addr/data regs.
-	 */
-	int nvram_addr_reg;
-	int nvram_data_reg;
-} todc_info_t;
-
-/*
- * Define the types of TODC/RTC variants that are supported in
- * arch/ppc/kernel/todc_time.c
- * Make a new one of these for any chip somehow differs from what's already
- * defined.  That way, if you ever need to put in code to touch those
- * bits/registers in todc_time.c, you can put it inside an
- * 'if (todc_info->rtc_type == TODC_TYPE_XXX)' so you won't break
- * anyone else.
- */
-#define TODC_TYPE_MK48T35		1
-#define TODC_TYPE_MK48T37		2
-#define TODC_TYPE_MK48T59		3
-#define TODC_TYPE_DS1693		4	/* Dallas DS1693 RTC */
-#define TODC_TYPE_DS1743		5	/* Dallas DS1743 RTC */
-#define TODC_TYPE_DS1746		6	/* Dallas DS1746 RTC */
-#define TODC_TYPE_DS1747		7	/* Dallas DS1747 RTC */
-#define TODC_TYPE_DS1501		8	/* Dallas DS1501 RTC */
-#define TODC_TYPE_DS1643		9	/* Dallas DS1643 RTC */
-#define TODC_TYPE_PC97307		10	/* PC97307 internal RTC */
-#define TODC_TYPE_DS1557		11	/* Dallas DS1557 RTC */
-#define TODC_TYPE_DS17285		12	/* Dallas DS17285 RTC */
-#define TODC_TYPE_DS1553		13	/* Dallas DS1553 RTC */
-#define TODC_TYPE_MC146818		100	/* Leave room for m48txx's */
-
-/*
- * Bit to clear/set to enable reads/writes to the chip
- */
-#define TODC_MK48TXX_CNTL_A_R		0x40
-#define TODC_MK48TXX_CNTL_A_W		0x80
-#define TODC_MK48TXX_DAY_CB		0x80
-
-#define TODC_DS1501_CNTL_B_TE		0x80
-
-/*
- * Define flag bits used by todc routines.
- */
-#define TODC_FLAG_2_LEVEL_NVRAM		0x00000001
-
-/*
- * Define the values for