OMAP2/3: PM: push core PM code from linux-omap

This patch is to sync the core linux-omap PM code with mainline.  This
code has evolved and been used for a while the linux-omap tree, but
the attempt here is to finally get this into mainline.

Following this will be a series of patches from the 'PM branch' of the
linux-omap tree to add full PM hardware support from the linux-omap
tree.

Much of this PM core code was written by Jouni Hogander with
significant contributions from Paul Walmsley as well as many others
from Nokia, Texas Instruments and linux-omap community.
Signed-off-by: Jouni Hogander <jouni.hogander@nokia.com>
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

arch/arm/mach-omap2/Makefile

@@ -25,8 +25,10 @@ obj-$(CONFIG_ARCH_OMAP2)		+= sdrc2xxx.o
 
 # Power Management
 ifeq ($(CONFIG_PM),y)
-obj-y					+= pm.o
+obj-$(CONFIG_ARCH_OMAP2)		+= pm24xx.o
 obj-$(CONFIG_ARCH_OMAP24XX)		+= sleep24xx.o
+obj-$(CONFIG_ARCH_OMAP3)		+= pm34xx.o sleep34xx.o
+obj-$(CONFIG_PM_DEBUG)			+= pm-debug.o
 endif
 
 # Clock framework

arch/arm/mach-omap2/pm-debug.c

+/*
+ * OMAP Power Management debug 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>
+ * Jouni Hogander
+ *
+ * Based on pm.c for omap2
+ *
+ * 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/kernel.h>
+#include <linux/timer.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/io.h>
+
+#include <mach/clock.h>
+#include <mach/board.h>
+
+#include "prm.h"
+#include "cm.h"
+#include "pm.h"
+
+int omap2_pm_debug;
+
+#define DUMP_PRM_MOD_REG(mod, reg)    \
+	regs[reg_count].name = #mod "." #reg; \
+	regs[reg_count++].val = prm_read_mod_reg(mod, reg)
+#define DUMP_CM_MOD_REG(mod, reg)     \
+	regs[reg_count].name = #mod "." #reg; \
+	regs[reg_count++].val = cm_read_mod_reg(mod, reg)
+#define DUMP_PRM_REG(reg) \
+	regs[reg_count].name = #reg; \
+	regs[reg_count++].val = __raw_readl(reg)
+#define DUMP_CM_REG(reg) \
+	regs[reg_count].name = #reg; \
+	regs[reg_count++].val = __raw_readl(reg)
+#define DUMP_INTC_REG(reg, off) \
+	regs[reg_count].name = #reg; \
+	regs[reg_count++].val = __raw_readl(IO_ADDRESS(0x480fe000 + (off)))
+
+void omap2_pm_dump(int mode, int resume, unsigned int us)
+{
+	struct reg {
+		const char *name;
+		u32 val;
+	} regs[32];
+	int reg_count = 0, i;
+	const char *s1 = NULL, *s2 = NULL;
+
+	if (!resume) {
+#if 0
+		/* MPU */
+		DUMP_PRM_MOD_REG(OCP_MOD, OMAP2_PRM_IRQENABLE_MPU_OFFSET);
+		DUMP_CM_MOD_REG(MPU_MOD, CM_CLKSTCTRL);
+		DUMP_PRM_MOD_REG(MPU_MOD, PM_PWSTCTRL);
+		DUMP_PRM_MOD_REG(MPU_MOD, PM_PWSTST);
+		DUMP_PRM_MOD_REG(MPU_MOD, PM_WKDEP);
+#endif
+#if 0
+		/* INTC */
+		DUMP_INTC_REG(INTC_MIR0, 0x0084);
+		DUMP_INTC_REG(INTC_MIR1, 0x00a4);
+		DUMP_INTC_REG(INTC_MIR2, 0x00c4);
+#endif
+#if 0
+		DUMP_CM_MOD_REG(CORE_MOD, CM_FCLKEN1);
+		if (cpu_is_omap24xx()) {
+			DUMP_CM_MOD_REG(CORE_MOD, OMAP24XX_CM_FCLKEN2);
+			DUMP_PRM_MOD_REG(OMAP24XX_GR_MOD,
+					OMAP2_PRCM_CLKEMUL_CTRL_OFFSET);
+			DUMP_PRM_MOD_REG(OMAP24XX_GR_MOD,
+					OMAP2_PRCM_CLKSRC_CTRL_OFFSET);
+		}
+		DUMP_CM_MOD_REG(WKUP_MOD, CM_FCLKEN);
+		DUMP_CM_MOD_REG(CORE_MOD, CM_ICLKEN1);
+		DUMP_CM_MOD_REG(CORE_MOD, CM_ICLKEN2);
+		DUMP_CM_MOD_REG(WKUP_MOD, CM_ICLKEN);
+		DUMP_CM_MOD_REG(PLL_MOD, CM_CLKEN);
+		DUMP_CM_MOD_REG(PLL_MOD, CM_AUTOIDLE);
+		DUMP_PRM_MOD_REG(CORE_MOD, PM_PWSTST);
+#endif
+#if 0
+		/* DSP */
+		if (cpu_is_omap24xx()) {
+			DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_FCLKEN);
+			DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_ICLKEN);
+			DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_IDLEST);
+			DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_AUTOIDLE);
+			DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_CLKSEL);
+			DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_CLKSTCTRL);
+			DUMP_PRM_MOD_REG(OMAP24XX_DSP_MOD, RM_RSTCTRL);
+			DUMP_PRM_MOD_REG(OMAP24XX_DSP_MOD, RM_RSTST);
+			DUMP_PRM_MOD_REG(OMAP24XX_DSP_MOD, PM_PWSTCTRL);
+			DUMP_PRM_MOD_REG(OMAP24XX_DSP_MOD, PM_PWSTST);
+		}
+#endif
+	} else {
+		DUMP_PRM_MOD_REG(CORE_MOD, PM_WKST1);
+		if (cpu_is_omap24xx())
+			DUMP_PRM_MOD_REG(CORE_MOD, OMAP24XX_PM_WKST2);
+		DUMP_PRM_MOD_REG(WKUP_MOD, PM_WKST);
+		DUMP_PRM_MOD_REG(OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET);
+#if 1
+		DUMP_INTC_REG(INTC_PENDING_IRQ0, 0x0098);
+		DUMP_INTC_REG(INTC_PENDING_IRQ1, 0x00b8);
+		DUMP_INTC_REG(INTC_PENDING_IRQ2, 0x00d8);
+#endif
+	}
+
+	switch (mode) {
+	case 0:
+		s1 = "full";
+		s2 = "retention";
+		break;
+	case 1:
+		s1 = "MPU";
+		s2 = "retention";
+		break;
+	case 2:
+		s1 = "MPU";
+		s2 = "idle";
+		break;
+	}
+
+	if (!resume)
+#ifdef CONFIG_NO_HZ
+		printk(KERN_INFO
+		       "--- Going to %s %s (next timer after %u ms)\n", s1, s2,
+		       jiffies_to_msecs(get_next_timer_interrupt(jiffies) -
+					jiffies));
+#else
+		printk(KERN_INFO "--- Going to %s %s\n", s1, s2);
+#endif
+	else
+		printk(KERN_INFO "--- Woke up (slept for %u.%03u ms)\n",
+			us / 1000, us % 1000);
+
+	for (i = 0; i < reg_count; i++)
+		printk(KERN_INFO "%-20s: 0x%08x\n", regs[i].name, regs[i].val);
+}

arch/arm/mach-omap2/pm.c

-/*
- * linux/arch/arm/mach-omap2/pm.c
- *
- * OMAP2 Power Management Routines
- *
- * Copyright (C) 2006 Nokia Corporation
- * Tony Lindgren <tony@atomide.com>
- *
- * Copyright (C) 2005 Texas Instruments, Inc.
- * Richard Woodruff <r-woodruff2@ti.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.h>
-#include <linux/io.h>
-
-#include <asm/irq.h>
-#include <asm/atomic.h>
-#include <asm/mach/time.h>
-#include <asm/mach/irq.h>
-
-#include <mach/irqs.h>
-#include <mach/clock.h>
-#include <mach/sram.h>
-#include <mach/pm.h>
-
-static struct clk *vclk;
-static void (*omap2_sram_idle)(void);
-static void (*omap2_sram_suspend)(int dllctrl, int cpu_rev);
-static void (*saved_idle)(void);
-
-extern void __init pmdomain_init(void);
-extern void pmdomain_set_autoidle(void);
-
-static unsigned int omap24xx_sleep_save[OMAP24XX_SLEEP_SAVE_SIZE];
-
-void omap2_pm_idle(void)
-{
-	local_irq_disable();
-	local_fiq_disable();
-	if (need_resched()) {
-		local_fiq_enable();
-		local_irq_enable();
-		return;
-	}
-
-	omap2_sram_idle();
-	local_fiq_enable();
-	local_irq_enable();
-}
-
-static int omap2_pm_prepare(void)
-{
-	/* We cannot sleep in idle until we have resumed */
-	saved_idle = pm_idle;
-	pm_idle = NULL;
-	return 0;
-}
-
-static int omap2_pm_suspend(void)
-{
-	return 0;
-}
-
-static int omap2_pm_enter(suspend_state_t state)
-{
-	int ret = 0;
-
-	switch (state)
-	{
-	case PM_SUSPEND_STANDBY:
-	case PM_SUSPEND_MEM:
-		ret = omap2_pm_suspend();
-		break;
-	default:
-		ret = -EINVAL;
-	}
-
-	return ret;
-}
-
-static void omap2_pm_finish(void)
-{
-	pm_idle = saved_idle;
-}
-
-static struct platform_suspend_ops omap_pm_ops = {
-	.prepare	= omap2_pm_prepare,
-	.enter		= omap2_pm_enter,
-	.finish		= omap2_pm_finish,
-	.valid		= suspend_valid_only_mem,
-};
-
-static int __init omap2_pm_init(void)
-{
-	return 0;
-}
-
-__initcall(omap2_pm_init);

arch/arm/mach-omap2/pm.h

+/*
+ * OMAP2/3 Power Management Routines
+ *
+ * Copyright (C) 2008 Nokia Corporation
+ * Jouni Hogander
+ *
+ * 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.
+ */
+#ifndef __ARCH_ARM_MACH_OMAP2_PM_H
+#define __ARCH_ARM_MACH_OMAP2_PM_H
+
+extern int omap2_pm_init(void);
+extern int omap3_pm_init(void);
+
+#ifdef CONFIG_PM_DEBUG
+extern void omap2_pm_dump(int mode, int resume, unsigned int us);
+extern int omap2_pm_debug;
+#else
+#define omap2_pm_dump(mode, resume, us)		do {} while (0);
+#define omap2_pm_debug				0
+#endif /* CONFIG_PM_DEBUG */
+
+extern void omap24xx_idle_loop_suspend(void);
+
+extern void omap24xx_cpu_suspend(u32 dll_ctrl, void __iomem *sdrc_dlla_ctrl,
+					void __iomem *sdrc_power);
+extern void omap34xx_cpu_suspend(u32 *addr, int save_state);
+extern void save_secure_ram_context(u32 *addr);
+
+extern unsigned int omap24xx_idle_loop_suspend_sz;
+extern unsigned int omap34xx_suspend_sz;
+extern unsigned int save_secure_ram_context_sz;
+extern unsigned int omap24xx_cpu_suspend_sz;
+extern unsigned int omap34xx_cpu_suspend_sz;
+
+#endif

arch/arm/mach-omap2/prcm-common.h

@@ -276,6 +276,8 @@
 /* CM_FCLKEN_WKUP, CM_ICLKEN_WKUP, PM_WKEN_WKUP shared bits */
 #define OMAP3430_EN_GPIO1				(1 << 3)
 #define OMAP3430_EN_GPIO1_SHIFT				3
+#define OMAP3430_EN_GPT12				(1 << 1)
+#define OMAP3430_EN_GPT12_SHIFT				1
 #define OMAP3430_EN_GPT1				(1 << 0)
 #define OMAP3430_EN_GPT1_SHIFT				0
 

arch/arm/mach-omap2/sdrc.c

@@ -60,9 +60,12 @@ struct omap_sdrc_params *omap2_sdrc_get_params(unsigned long r)
 {
 	struct omap_sdrc_params *sp;
 
+	if (!sdrc_init_params)
+		return NULL;
+
 	sp = sdrc_init_params;
 
-	while (sp->rate != r)
+	while (sp->rate && sp->rate != r)
 		sp++;
 
 	if (!sp->rate)

arch/arm/mach-omap2/sleep24xx.S

@@ -28,7 +28,6 @@
 #include <linux/linkage.h>
 #include <asm/assembler.h>
 #include <mach/io.h>
-#include <mach/pm.h>
 
 #include <mach/omap24xx.h>
 

arch/arm/mach-omap2/usb-musb.c

@@ -28,7 +28,6 @@
 
 #include <mach/hardware.h>
 #include <mach/irqs.h>
-#include <mach/pm.h>
 #include <mach/mux.h>
 #include <mach/usb.h>
 

arch/arm/plat-omap/Kconfig

@@ -171,7 +171,7 @@ endchoice
 
 config OMAP_SERIAL_WAKE
 	bool "Enable wake-up events for serial ports"
-	depends on OMAP_MUX
+	depends on ARCH_OMAP1 && OMAP_MUX
 	default y
 	help
 	  Select this option if you want to have your system wake up

arch/arm/plat-omap/common.c

@@ -11,7 +11,6 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/delay.h>
-#include <linux/pm.h>
 #include <linux/console.h>
 #include <linux/serial.h>
 #include <linux/tty.h>

drivers/mtd/onenand/omap2.c

@@ -39,7 +39,6 @@
 #include <mach/gpmc.h>
 #include <mach/onenand.h>
 #include <mach/gpio.h>
-#include <mach/pm.h>
 
 #include <mach/dma.h>