waterDataStatistics functionDefinition.c 朱俊杰 commit at 2020-10-28

waterDataStatistics/calculationOfAlarmUnprocessedData/functionDefinition.c

@@ -0,0 +1,185 @@
+/*
+ * OMAP2 Power Management Routines
+ *
+ * Copyright (C) 2005 Texas Instruments, Inc.
+ * Copyright (C) 2006-2008 Nokia Corporation
+ *
+ * Written by:
+ * Richard Woodruff <r-woodruff2@ti.com>
+ * Tony Lindgren
+ * Juha Yrjola
+ * Amit Kucheria <amit.kucheria@nokia.com>
+ * Igor Stoppa <igor.stoppa@nokia.com>
+ *
+ * Based on pm.c for omap1
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#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/delay.h>
+#include <linux/clk-provider.h>
+#include <linux/irq.h>
+#include <linux/time.h>
+#include <linux/gpio.h>
+#include <linux/platform_data/gpio-omap.h>
+
+#include <asm/fncpy.h>
+
+#include <asm/mach/time.h>
+#include <asm/mach/irq.h>
+#include <asm/mach-types.h>
+#include <asm/system_misc.h>
+
+#include <linux/omap-dma.h>
+
+#include "soc.h"
+#include "common.h"
+#include "clock.h"
+#include "prm2xxx.h"
+#include "prm-regbits-24xx.h"
+#include "cm2xxx.h"
+#include "cm-regbits-24xx.h"
+#include "sdrc.h"
+#include "sram.h"
+#include "pm.h"
+#include "control.h"
+#include "powerdomain.h"
+#include "clockdomain.h"
+
+static void (*omap2_sram_idle)(void);
+static void (*omap2_sram_suspend)(u32 dllctrl, void __iomem *sdrc_dlla_ctrl,
+				  void __iomem *sdrc_power);
+
+static struct powerdomain *mpu_pwrdm, *core_pwrdm;
+static struct clockdomain *dsp_clkdm, *mpu_clkdm, *wkup_clkdm, *gfx_clkdm;
+
+static struct clk *osc_ck, *emul_ck;
+
+static int omap2_fclks_active(void)
+{
+	u32 f1, f2;
+
+	f1 = omap2_cm_read_mod_reg(CORE_MOD, CM_FCLKEN1);
+	f2 = omap2_cm_read_mod_reg(CORE_MOD, OMAP24XX_CM_FCLKEN2);
+
+	return (f1 | f2) ? 1 : 0;
+}
+
+static int omap2_enter_full_retention(void)
+{
+	u32 l;
+
+	/* There is 1 reference hold for all children of the oscillator
+	 * clock, the following will remove it. If no one else uses the
+	 * oscillator itself it will be disabled if/when we enter retention
+	 * mode.
+	 */
+	clk_disable(osc_ck);
+
+	/* Clear old wake-up events */
+	/* REVISIT: These write to reserved bits? */
+	omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, PM_WKST1);
+	omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP24XX_PM_WKST2);
+	omap2_prm_write_mod_reg(0xffffffff, WKUP_MOD, PM_WKST);
+
+	/*
+	 * Set MPU powerdomain's next power state to RETENTION;
+	 * preserve logic state during retention
+	 */
+	pwrdm_set_logic_retst(mpu_pwrdm, PWRDM_POWER_RET);
+	pwrdm_set_next_pwrst(mpu_pwrdm, PWRDM_POWER_RET);
+
+	/* Workaround to kill USB */
+	l = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0) | OMAP24XX_USBSTANDBYCTRL;
+	omap_ctrl_writel(l, OMAP2_CONTROL_DEVCONF0);
+
+	omap2_gpio_prepare_for_idle(0);
+
+	/* One last check for pending IRQs to avoid extra latency due
+	 * to sleeping unnecessarily. */
+	if (omap_irq_pending())
+		goto no_sleep;
+
+	/* Jump to SRAM suspend code */
+	omap2_sram_suspend(sdrc_read_reg(SDRC_DLLA_CTRL),
+			   OMAP_SDRC_REGADDR(SDRC_DLLA_CTRL),
+			   OMAP_SDRC_REGADDR(SDRC_POWER));
+
+no_sleep:
+	omap2_gpio_resume_after_idle();
+
+	clk_enable(osc_ck);
+
+	/* clear CORE wake-up events */
+	omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, PM_WKST1);
+	omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP24XX_PM_WKST2);
+
+	/* wakeup domain events - bit 1: GPT1, bit5 GPIO */
+	omap2_prm_clear_mod_reg_bits(0x4 | 0x1, WKUP_MOD, PM_WKST);
+
+	/* MPU domain wake events */
+	l = omap2_prm_read_mod_reg(OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET);
+	if (l & 0x01)
+		omap2_prm_write_mod_reg(0x01, OCP_MOD,
+				  OMAP2_PRCM_IRQSTATUS_MPU_OFFSET);
+	if (l & 0x20)
+		omap2_prm_write_mod_reg(0x20, OCP_MOD,
+				  OMAP2_PRCM_IRQSTATUS_MPU_OFFSET);
+
+	/* Mask future PRCM-to-MPU interrupts */
+	omap2_prm_write_mod_reg(0x0, OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET);
+
+	return 0;
+}
+
+static int omap2_i2c_active(void)
+{
+	u32 l;
+
+	l = omap2_cm_read_mod_reg(CORE_MOD, CM_FCLKEN1);
+	return l & (OMAP2420_EN_I2C2_MASK | OMAP2420_EN_I2C1_MASK);
+}
+
+static int sti_console_enabled;
+
+static int omap2_allow_mpu_retention(void)
+{
+	u32 l;
+
+	/* Check for MMC, UART2, UART1, McSPI2, McSPI1 and DSS1. */
+	l = omap2_cm_read_mod_reg(CORE_MOD, CM_FCLKEN1);
+	if (l & (OMAP2420_EN_MMC_MASK | OMAP24XX_EN_UART2_MASK |
+		 OMAP24XX_EN_UART1_MASK | OMAP24XX_EN_MCSPI2_MASK |
+		 OMAP24XX_EN_MCSPI1_MASK | OMAP24XX_EN_DSS1_MASK))
+		return 0;
+	/* Check for UART3. */
+	l = omap2_cm_read_mod_reg(CORE_MOD, OMAP24XX_CM_FCLKEN2);
+	if (l & OMAP24XX_EN_UART3_MASK)
+		return 0;
+	if (sti_console_enabled)
+		return 0;
+
+	return 1;
+}
+
+static void omap2_enter_mpu_retention(void)
+{
+	/* Putting MPU into the WFI state while a transfer is active
+	 * seems to cause the I2C block to timeout. Why? Good question. */
+	if (omap2_i2c_active())
+		return;
+
+	/* The peripherals seem not to be able to wake up the MPU when
+	 * it is in retention mode. */
+	if (omap2_allow_mpu_retention()) {
+		/* REVISIT: These write to reserved bits? */
+		omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, PM_WKST1);
+		omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP24XX_PM_WKST2);