aiot/efElectricAgingTrendMining/monitoringDataProcessing/connectTheSignalSlot.c

/*
 * linux/arch/arm/mach-omap1/pm.c
 *
 * OMAP Power Management Routines
 *
 * Original code for the SA11x0:
 * Copyright (c) 2001 Cliff Brake <cbrake@accelent.com>
 *
 * Modified for the PXA250 by Nicolas Pitre:
 * Copyright (c) 2002 Monta Vista Software, Inc.
 *
 * Modified for the OMAP1510 by David Singleton:
 * Copyright (c) 2002 Monta Vista Software, Inc.
 *
 * Cleanup 2004 for OMAP1510/1610 by Dirk Behme <dirk.behme@de.bosch.com>
 *
 * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * 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.,
 * 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/suspend.h>
#include <linux/sched.h>
#include <linux/proc_fs.h>
#include <linux/interrupt.h>
#include <linux/sysfs.h>
#include <linux/module.h>
#include <linux/io.h>
#include <linux/atomic.h>

#include <asm/fncpy.h>
#include <asm/system_misc.h>
#include <asm/irq.h>
#include <asm/mach/time.h>
#include <asm/mach/irq.h>

#include <mach/tc.h>
#include <mach/mux.h>
#include <linux/omap-dma.h>
#include <plat/dmtimer.h>

#include <mach/irqs.h>

#include "iomap.h"
#include "clock.h"
#include "pm.h"
#include "sram.h"

static unsigned int arm_sleep_save[ARM_SLEEP_SAVE_SIZE];
static unsigned short dsp_sleep_save[DSP_SLEEP_SAVE_SIZE];
static unsigned short ulpd_sleep_save[ULPD_SLEEP_SAVE_SIZE];
static unsigned int mpui7xx_sleep_save[MPUI7XX_SLEEP_SAVE_SIZE];
static unsigned int mpui1510_sleep_save[MPUI1510_SLEEP_SAVE_SIZE];
static unsigned int mpui1610_sleep_save[MPUI1610_SLEEP_SAVE_SIZE];

#ifdef CONFIG_OMAP_32K_TIMER

static unsigned short enable_dyn_sleep = 1;

static ssize_t idle_show(struct kobject *kobj, struct kobj_attribute *attr,
			 char *buf)
{
	return sprintf(buf, "%hu\n", enable_dyn_sleep);
}

static ssize_t idle_store(struct kobject *kobj, struct kobj_attribute *attr,
			  const char * buf, size_t n)
{
	unsigned short value;
	if (sscanf(buf, "%hu", &value) != 1 ||
	    (value != 0 && value != 1)) {
		printk(KERN_ERR "idle_sleep_store: Invalid value\n");
		return -EINVAL;
	}
	enable_dyn_sleep = value;
	return n;
}

static struct kobj_attribute sleep_while_idle_attr =
	__ATTR(sleep_while_idle, 0644, idle_show, idle_store);

#endif

static void (*omap_sram_suspend)(unsigned long r0, unsigned long r1) = NULL;

/*
 * Let's power down on idle, but only if we are really
 * idle, because once we start down the path of
 * going idle we continue to do idle even if we get
 * a clock tick interrupt . .
 */
void omap1_pm_idle(void)
{
	extern __u32 arm_idlect1_mask;
	__u32 use_idlect1 = arm_idlect1_mask;
	int do_sleep = 0;

	local_fiq_disable();

#if defined(CONFIG_OMAP_MPU_TIMER) && !defined(CONFIG_OMAP_DM_TIMER)
#warning Enable 32kHz OS timer in order to allow sleep states in idle
	use_idlect1 = use_idlect1 & ~(1 << 9);
#else

	while (enable_dyn_sleep) {

#ifdef CONFIG_CBUS_TAHVO_USB
		extern int vbus_active;
		/* Clock requirements? */
		if (vbus_active)
			break;
#endif
		do_sleep = 1;
		break;
	}

#endif

#ifdef CONFIG_OMAP_DM_TIMER
	use_idlect1 = omap_dm_timer_modify_idlect_mask(use_idlect1);
#endif

	if (omap_dma_running())
		use_idlect1 &= ~(1 << 6);

	/* We should be able to remove the do_sleep variable and multiple
	 * tests above as soon as drivers, timer and DMA code have been fixed.
	 * Even the sleep block count should become obsolete. */
	if ((use_idlect1 != ~0) || !do_sleep) {

		__u32 saved_idlect1 = omap_readl(ARM_IDLECT1);
		if (cpu_is_omap15xx())
			use_idlect1 &= OMAP1510_BIG_SLEEP_REQUEST;
		else
			use_idlect1 &= OMAP1610_IDLECT1_SLEEP_VAL;
		omap_writel(use_idlect1, ARM_IDLECT1);
		__asm__ volatile ("mcr	p15, 0, r0, c7, c0, 4");
		omap_writel(saved_idlect1, ARM_IDLECT1);

		local_fiq_enable();
		return;
	}
	omap_sram_suspend(omap_readl(ARM_IDLECT1),
			  omap_readl(ARM_IDLECT2));

	local_fiq_enable();
}

/*
 * Configuration of the wakeup event is board specific. For the
 * moment we put it into this helper function. Later it may move
 * to board specific files.
 */
static void omap_pm_wakeup_setup(void)
{
	u32 level1_wake = 0;
	u32 level2_wake = OMAP_IRQ_BIT(INT_UART2);

	/*
	 * Turn off all interrupts except GPIO bank 1, L1-2nd level cascade,
	 * and the L2 wakeup interrupts: keypad and UART2. Note that the
	 * drivers must still separately call omap_set_gpio_wakeup() to
	 * wake up to a GPIO interrupt.
	 */
	if (cpu_is_omap7xx())
		level1_wake = OMAP_IRQ_BIT(INT_7XX_GPIO_BANK1) |
			OMAP_IRQ_BIT(INT_7XX_IH2_IRQ);
	else if (cpu_is_omap15xx())
		level1_wake = OMAP_IRQ_BIT(INT_GPIO_BANK1) |
			OMAP_IRQ_BIT(INT_1510_IH2_IRQ);
	else if (cpu_is_omap16xx())
		level1_wake = OMAP_IRQ_BIT(INT_GPIO_BANK1) |
			OMAP_IRQ_BIT(INT_1610_IH2_IRQ);

	omap_writel(~level1_wake, OMAP_IH1_MIR);

	if (cpu_is_omap7xx()) {
		omap_writel(~level2_wake, OMAP_IH2_0_MIR);
		omap_writel(~(OMAP_IRQ_BIT(INT_7XX_WAKE_UP_REQ) |
				OMAP_IRQ_BIT(INT_7XX_MPUIO_KEYPAD)),
				OMAP_IH2_1_MIR);
	} else if (cpu_is_omap15xx()) {
		level2_wake |= OMAP_IRQ_BIT(INT_KEYBOARD);
		omap_writel(~level2_wake,  OMAP_IH2_MIR);
	} else if (cpu_is_omap16xx()) {
		level2_wake |= OMAP_IRQ_BIT(INT_KEYBOARD);
		omap_writel(~level2_wake, OMAP_IH2_0_MIR);

		/* INT_1610_WAKE_UP_REQ is needed for GPIO wakeup... */