Merge branch 'linus' into cpus4096

Conflicts:

	drivers/acpi/processor_throttling.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 0 insertions, 511 deletions

diff --git a/arch/ppc/syslib/todc_time.c b/arch/ppc/syslib/todc_time.c
deleted file mode 100644
index a8168b8e568..00000000000
--- a/arch/ppc/syslib/todc_time.c
+++ /dev/null
@@ -1,511 +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.
- *
- * In order to break the assumption that the RTC and NVRAM are accessed by
- * the same mechanism, you need to explicitly set 'ppc_md.rtc_read_val' and
- * 'ppc_md.rtc_write_val', otherwise the values of 'ppc_md.rtc_read_val'
- * and 'ppc_md.rtc_write_val' will be used.
- *
- * 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 %s %s\n",
-				"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.
- */
-ulong
-todc_get_rtc_time(void)
-{
-	uint	year = 0, mon = 0, day = 0, hour = 0, min = 0, sec = 0;
-	uint	limit, i;
-	u_char	save_control, uip = 0;
-
-	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;
-		day = 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(day);
-		BCD_TO_BIN(mon);
-		BCD_TO_BIN(year);
-	}
-
-	year = year + 1900;
-	if (year < 1970) {
-		year += 100;
-	}
-
-	return mktime(year, mon, day, hour, min, sec);
-}
-
-int
-todc_set_rtc_time(unsigned long nowtime)
-{
-	struct rtc_time	tm;
-	u_char		save_control, save_freq_select = 0;
-
-	spin_lock(&rtc_lock);
-	to_tm(nowtime, &tm);
-
-	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);
-	}
-
-
-        tm.tm_year = (tm.tm_year - 1900) % 100;
-
-	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;
-}
-
-/*
- * Manipulates read bit to reliably read seconds at a high rate.
- */
-static unsigned char __init todc_read_timereg(int addr)
-{
-	unsigned char save_control = 0, val;
-
-	switch (todc_info->rtc_type) {
-		case TODC_TYPE_DS1553:
-		case TODC_TYPE_DS1557:
-		case TODC_TYPE_DS1746:	/* XXXX BAD HACK -> FIX */
-		case TODC_TYPE_DS1747:
-		case TODC_TYPE_DS17285:
-		case TODC_TYPE_MC146818:
-			break;
-		default:
-			save_control = todc_read_val(todc_info->control_a);
-			todc_write_val(todc_info->control_a,
-				       (save_control | todc_info->enable_read));
-	}
-	val = todc_read_val(addr);
-
-	switch (todc_info->rtc_type) {
-		case TODC_TYPE_DS1553:
-		case TODC_TYPE_DS1557:
-		case TODC_TYPE_DS1746:	/* XXXX BAD HACK -> FIX */
-		case TODC_TYPE_DS1747:
-		case TODC_TYPE_DS17285:
-		case TODC_TYPE_MC146818:
-			break;
-		default:
-			save_control &= ~(todc_info->enable_read);
-			todc_write_val(todc_info->control_a, save_control);
-	}
-
-	return val;
-}
-
-/*
- * This was taken from prep_setup.c
- * Use the NVRAM RTC to time a second to calibrate the decrementer.
- */
-void __init
-todc_calibrate_decr(void)
-{
-	ulong	freq;
-	ulong	tbl, tbu;
-        long	i, loop_count;
-        u_char	sec;
-
-	todc_time_init();
-
-	/*
-	 * Actually this is bad for precision, we should have a loop in
-	 * which we only read the seconds counter. todc_read_val writes
-	 * the address bytes on every call and this takes a lot of time.
-	 * Perhaps an nvram_wait_change method returning a time
-	 * stamp with a loop count as parameter would be the solution.
-	 */
-	/*
-	 * Need to make sure the tbl doesn't roll over so if tbu increments
-	 * during this test, we need to do it again.
-	 */
-	loop_count = 0;
-
-	sec = todc_read_timereg(todc_info->seconds) & 0x7f;
-
-	do {
-		tbu = get_tbu();
-
-		for (i = 0 ; i < 10000000 ; i++) {/* may take up to 1 second */
-		   tbl = get_tbl();
-
-		   if ((todc_read_timereg(todc_info->seconds) & 0x7f) != sec) {
-		      break;
-		   }
-		}
-
-		sec = todc_read_timereg(todc_info->seconds) & 0x7f;
-
-		for (i = 0 ; i < 10000000 ; i++) { /* Should take 1 second */
-		   freq = get_tbl();
-
-		   if ((todc_read_timereg(todc_info->seconds) & 0x7f) != sec) {
-		      break;
-		   }
-		}
-
-		freq -= tbl;
-	} while ((get_tbu() != tbu) && (++loop_count < 2));
-
-	printk("time_init: decrementer frequency = %lu.%.6lu MHz\n",
-	       freq/1000000, freq%1000000);
-
-	tb_ticks_per_jiffy = freq / HZ;
-	tb_to_us = mulhwu_scale_factor(freq, 1000000);
-
-	return;
-}