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ARM: OMAP: Add initial 24xx suspend support

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This patch adds support for omap24xx power domains and
allows suspend to work.

Please note that for some reason core power domain still
does not seem to idle.

Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Tony Lindgren 2006-06-26 16:16:18 -07:00
parent a7ca9d2b01
commit 22a16f39e3
5 changed files with 601 additions and 7 deletions
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2
arch/arm/mach-omap2/Makefile
View file

@ -9,7 +9,7 @@ obj-y := irq.o id.o io.o sram-fn.o memory.o prcm.o clock.o mux.o devices.o \
obj-$(CONFIG_OMAP_MPU_TIMER) += timer-gp.o
# Power Management
obj-$(CONFIG_PM) += pm.o sleep.o
obj-$(CONFIG_PM) += pm.o pm-domain.o sleep.o
# Specific board support
obj-$(CONFIG_MACH_OMAP_GENERIC) += board-generic.o

300
arch/arm/mach-omap2/pm-domain.c Normal file
View file

@ -0,0 +1,300 @@
/*
* linux/arch/arm/mach-omap2/pm-domain.c
*
* Power domain functions for OMAP2
*
* Copyright (C) 2006 Nokia Corporation
* Tony Lindgren <tony@atomide.com>
*
* Some code based on earlier OMAP2 sample PM code
* Copyright (C) 2005 Texas Instruments, Inc.
* Richard Woodruff <r-woodruff2@ti.com>
*
* 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/config.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/clk.h>
#include <asm/io.h>
#include "prcm-regs.h"
/* Power domain offsets */
#define PM_MPU_OFFSET 0x100
#define PM_CORE_OFFSET 0x200
#define PM_GFX_OFFSET 0x300
#define PM_WKUP_OFFSET 0x400 /* Autoidle only */
#define PM_PLL_OFFSET 0x500 /* Autoidle only */
#define PM_DSP_OFFSET 0x800
#define PM_MDM_OFFSET 0xc00
/* Power domain wake-up dependency control register */
#define PM_WKDEP_OFFSET 0xc8
#define EN_MDM (1 << 5)
#define EN_WKUP (1 << 4)
#define EN_GFX (1 << 3)
#define EN_DSP (1 << 2)
#define EN_MPU (1 << 1)
#define EN_CORE (1 << 0)
/* Core power domain state transition control register */
#define PM_PWSTCTRL_OFFSET 0xe0
#define FORCESTATE (1 << 18) /* Only for DSP & GFX */
#define MEM4RETSTATE (1 << 6)
#define MEM3RETSTATE (1 << 5)
#define MEM2RETSTATE (1 << 4)
#define MEM1RETSTATE (1 << 3)
#define LOGICRETSTATE (1 << 2) /* Logic is retained */
#define POWERSTATE_OFF 0x3
#define POWERSTATE_RETENTION 0x1
#define POWERSTATE_ON 0x0
/* Power domain state register */
#define PM_PWSTST_OFFSET 0xe4
/* Hardware supervised state transition control register */
#define CM_CLKSTCTRL_OFFSET 0x48
#define AUTOSTAT_MPU (1 << 0) /* MPU */
#define AUTOSTAT_DSS (1 << 2) /* Core */
#define AUTOSTAT_L4 (1 << 1) /* Core */
#define AUTOSTAT_L3 (1 << 0) /* Core */
#define AUTOSTAT_GFX (1 << 0) /* GFX */
#define AUTOSTAT_IVA (1 << 8) /* 2420 IVA in DSP domain */
#define AUTOSTAT_DSP (1 << 0) /* DSP */
#define AUTOSTAT_MDM (1 << 0) /* MDM */
/* Automatic control of interface clock idling */
#define CM_AUTOIDLE1_OFFSET 0x30
#define CM_AUTOIDLE2_OFFSET 0x34 /* Core only */
#define CM_AUTOIDLE3_OFFSET 0x38 /* Core only */
#define CM_AUTOIDLE4_OFFSET 0x3c /* Core only */
#define AUTO_54M(x) (((x) & 0x3) << 6)
#define AUTO_96M(x) (((x) & 0x3) << 2)
#define AUTO_DPLL(x) (((x) & 0x3) << 0)
#define AUTO_STOPPED 0x3
#define AUTO_BYPASS_FAST 0x2 /* DPLL only */
#define AUTO_BYPASS_LOW_POWER 0x1 /* DPLL only */
#define AUTO_DISABLED 0x0
/* Voltage control PRCM_VOLTCTRL bits */
#define AUTO_EXTVOLT (1 << 15)
#define FORCE_EXTVOLT (1 << 14)
#define SETOFF_LEVEL(x) (((x) & 0x3) << 12)
#define MEMRETCTRL (1 << 8)
#define SETRET_LEVEL(x) (((x) & 0x3) << 6)
#define VOLT_LEVEL(x) (((x) & 0x3) << 0)
#define OMAP24XX_PRCM_VBASE IO_ADDRESS(OMAP24XX_PRCM_BASE)
#define prcm_readl(r) __raw_readl(OMAP24XX_PRCM_VBASE + (r))
#define prcm_writel(v, r) __raw_writel((v), OMAP24XX_PRCM_VBASE + (r))
static u32 pmdomain_get_wakeup_dependencies(int domain_offset)
{
return prcm_readl(domain_offset + PM_WKDEP_OFFSET);
}
static void pmdomain_set_wakeup_dependencies(u32 state, int domain_offset)
{
prcm_writel(state, domain_offset + PM_WKDEP_OFFSET);
}
static u32 pmdomain_get_powerstate(int domain_offset)
{
return prcm_readl(domain_offset + PM_PWSTCTRL_OFFSET);
}
static void pmdomain_set_powerstate(u32 state, int domain_offset)
{
prcm_writel(state, domain_offset + PM_PWSTCTRL_OFFSET);
}
static u32 pmdomain_get_clock_autocontrol(int domain_offset)
{
return prcm_readl(domain_offset + CM_CLKSTCTRL_OFFSET);
}
static void pmdomain_set_clock_autocontrol(u32 state, int domain_offset)
{
prcm_writel(state, domain_offset + CM_CLKSTCTRL_OFFSET);
}
static u32 pmdomain_get_clock_autoidle1(int domain_offset)
{
return prcm_readl(domain_offset + CM_AUTOIDLE1_OFFSET);
}
/* Core domain only */
static u32 pmdomain_get_clock_autoidle2(int domain_offset)
{
return prcm_readl(domain_offset + CM_AUTOIDLE2_OFFSET);
}
/* Core domain only */
static u32 pmdomain_get_clock_autoidle3(int domain_offset)
{
return prcm_readl(domain_offset + CM_AUTOIDLE3_OFFSET);
}
/* Core domain only */
static u32 pmdomain_get_clock_autoidle4(int domain_offset)
{
return prcm_readl(domain_offset + CM_AUTOIDLE4_OFFSET);
}
static void pmdomain_set_clock_autoidle1(u32 state, int domain_offset)
{
prcm_writel(state, CM_AUTOIDLE1_OFFSET + domain_offset);
}
/* Core domain only */
static void pmdomain_set_clock_autoidle2(u32 state, int domain_offset)
{
prcm_writel(state, CM_AUTOIDLE2_OFFSET + domain_offset);
}
/* Core domain only */
static void pmdomain_set_clock_autoidle3(u32 state, int domain_offset)
{
prcm_writel(state, CM_AUTOIDLE3_OFFSET + domain_offset);
}
/* Core domain only */
static void pmdomain_set_clock_autoidle4(u32 state, int domain_offset)
{
prcm_writel(state, CM_AUTOIDLE4_OFFSET + domain_offset);
}
/*
* Configures power management domains to idle clocks automatically.
*/
void pmdomain_set_autoidle(void)
{
u32 val;
/* Set PLL auto stop for 54M, 96M & DPLL */
pmdomain_set_clock_autoidle1(AUTO_54M(AUTO_STOPPED) |
AUTO_96M(AUTO_STOPPED) |
AUTO_DPLL(AUTO_STOPPED), PM_PLL_OFFSET);
/* External clock input control
* REVISIT: Should this be in clock framework?
*/
PRCM_CLKSRC_CTRL |= (0x3 << 3);
/* Configure number of 32KHz clock cycles for sys_clk */
PRCM_CLKSSETUP = 0x00ff;
/* Configure automatic voltage transition */
PRCM_VOLTSETUP = 0;
val = PRCM_VOLTCTRL;
val &= ~(SETOFF_LEVEL(0x3) | VOLT_LEVEL(0x3));
val |= SETOFF_LEVEL(1) | VOLT_LEVEL(1) | AUTO_EXTVOLT;
PRCM_VOLTCTRL = val;
/* Disable emulation tools functional clock */
PRCM_CLKEMUL_CTRL = 0x0;
/* Set core memory retention state */
val = pmdomain_get_powerstate(PM_CORE_OFFSET);
if (cpu_is_omap2420()) {
val &= ~(0x7 << 3);
val |= (MEM3RETSTATE | MEM2RETSTATE | MEM1RETSTATE);
} else {
val &= ~(0xf << 3);
val |= (MEM4RETSTATE | MEM3RETSTATE | MEM2RETSTATE |
MEM1RETSTATE);
}
pmdomain_set_powerstate(val, PM_CORE_OFFSET);
/* OCP interface smart idle. REVISIT: Enable autoidle bit0 ? */
val = SMS_SYSCONFIG;
val &= ~(0x3 << 3);
val |= (0x2 << 3) | (1 << 0);
SMS_SYSCONFIG |= val;
val = SDRC_SYSCONFIG;
val &= ~(0x3 << 3);
val |= (0x2 << 3);
SDRC_SYSCONFIG = val;
/* Configure L3 interface for smart idle.
* REVISIT: Enable autoidle bit0 ?
*/
val = GPMC_SYSCONFIG;
val &= ~(0x3 << 3);
val |= (0x2 << 3) | (1 << 0);
GPMC_SYSCONFIG = val;
pmdomain_set_powerstate(LOGICRETSTATE | POWERSTATE_RETENTION,
PM_MPU_OFFSET);
pmdomain_set_powerstate(POWERSTATE_RETENTION, PM_CORE_OFFSET);
if (!cpu_is_omap2420())
pmdomain_set_powerstate(POWERSTATE_RETENTION, PM_MDM_OFFSET);
/* Assume suspend function has saved the state for DSP and GFX */
pmdomain_set_powerstate(FORCESTATE | POWERSTATE_OFF, PM_DSP_OFFSET);
pmdomain_set_powerstate(FORCESTATE | POWERSTATE_OFF, PM_GFX_OFFSET);
#if 0
/* REVISIT: Internal USB needs special handling */
force_standby_usb();
if (cpu_is_omap2430())
force_hsmmc();
sdram_self_refresh_on_idle_req(1);
#endif
/* Enable clock auto control for all domains.
* Note that CORE domain includes also DSS, L4 & L3.
*/
pmdomain_set_clock_autocontrol(AUTOSTAT_MPU, PM_MPU_OFFSET);
pmdomain_set_clock_autocontrol(AUTOSTAT_GFX, PM_GFX_OFFSET);
pmdomain_set_clock_autocontrol(AUTOSTAT_DSS | AUTOSTAT_L4 | AUTOSTAT_L3,
PM_CORE_OFFSET);
if (cpu_is_omap2420())
pmdomain_set_clock_autocontrol(AUTOSTAT_IVA | AUTOSTAT_DSP,
PM_DSP_OFFSET);
else {
pmdomain_set_clock_autocontrol(AUTOSTAT_DSP, PM_DSP_OFFSET);
pmdomain_set_clock_autocontrol(AUTOSTAT_MDM, PM_MDM_OFFSET);
}
/* Enable clock autoidle for all domains */
pmdomain_set_clock_autoidle1(0x2, PM_DSP_OFFSET);
if (cpu_is_omap2420()) {
pmdomain_set_clock_autoidle1(0xfffffff9, PM_CORE_OFFSET);
pmdomain_set_clock_autoidle2(0x7, PM_CORE_OFFSET);
pmdomain_set_clock_autoidle1(0x3f, PM_WKUP_OFFSET);
} else {
pmdomain_set_clock_autoidle1(0xeafffff1, PM_CORE_OFFSET);
pmdomain_set_clock_autoidle2(0xfff, PM_CORE_OFFSET);
pmdomain_set_clock_autoidle1(0x7f, PM_WKUP_OFFSET);
pmdomain_set_clock_autoidle1(0x3, PM_MDM_OFFSET);
}
pmdomain_set_clock_autoidle3(0x7, PM_CORE_OFFSET);
pmdomain_set_clock_autoidle4(0x1f, PM_CORE_OFFSET);
}
/*
* Initializes power domains by removing wake-up dependencies and powering
* down DSP and GFX. Gets called from PM init. Note that DSP and IVA code
* must re-enable DSP and GFX when used.
*/
void __init pmdomain_init(void)
{
/* Remove all domain wakeup dependencies */
pmdomain_set_wakeup_dependencies(EN_WKUP | EN_CORE, PM_MPU_OFFSET);
pmdomain_set_wakeup_dependencies(0, PM_DSP_OFFSET);
pmdomain_set_wakeup_dependencies(0, PM_GFX_OFFSET);
pmdomain_set_wakeup_dependencies(EN_WKUP | EN_MPU, PM_CORE_OFFSET);
if (cpu_is_omap2430())
pmdomain_set_wakeup_dependencies(0, PM_MDM_OFFSET);
/* Power down DSP and GFX */
pmdomain_set_powerstate(POWERSTATE_OFF | FORCESTATE, PM_DSP_OFFSET);
pmdomain_set_powerstate(POWERSTATE_OFF | FORCESTATE, PM_GFX_OFFSET);
}

271
arch/arm/mach-omap2/pm.c
View file

@ -23,6 +23,7 @@
#include <linux/interrupt.h>
#include <linux/sysfs.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <asm/io.h>
#include <asm/irq.h>
@ -36,11 +37,18 @@
#include <asm/arch/sram.h>
#include <asm/arch/pm.h>
#include "prcm-regs.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();
@ -87,23 +95,272 @@ static int omap2_pm_prepare(suspend_state_t state)
return error;
}
#define INT0_WAKE_MASK (OMAP_IRQ_BIT(INT_24XX_GPIO_BANK1) | \
OMAP_IRQ_BIT(INT_24XX_GPIO_BANK2) | \
OMAP_IRQ_BIT(INT_24XX_GPIO_BANK3))
#define INT1_WAKE_MASK (OMAP_IRQ_BIT(INT_24XX_GPIO_BANK4))
#define INT2_WAKE_MASK (OMAP_IRQ_BIT(INT_24XX_UART1_IRQ) | \
OMAP_IRQ_BIT(INT_24XX_UART2_IRQ) | \
OMAP_IRQ_BIT(INT_24XX_UART3_IRQ))
#define preg(reg) printk("%s\t(0x%p):\t0x%08x\n", #reg, &reg, reg);
static void omap2_pm_debug(char * desc)
{
printk("%s:\n", desc);
preg(CM_CLKSTCTRL_MPU);
preg(CM_CLKSTCTRL_CORE);
preg(CM_CLKSTCTRL_GFX);
preg(CM_CLKSTCTRL_DSP);
preg(CM_CLKSTCTRL_MDM);
preg(PM_PWSTCTRL_MPU);
preg(PM_PWSTCTRL_CORE);
preg(PM_PWSTCTRL_GFX);
preg(PM_PWSTCTRL_DSP);
preg(PM_PWSTCTRL_MDM);
preg(PM_PWSTST_MPU);
preg(PM_PWSTST_CORE);
preg(PM_PWSTST_GFX);
preg(PM_PWSTST_DSP);
preg(PM_PWSTST_MDM);
preg(CM_AUTOIDLE1_CORE);
preg(CM_AUTOIDLE2_CORE);
preg(CM_AUTOIDLE3_CORE);
preg(CM_AUTOIDLE4_CORE);
preg(CM_AUTOIDLE_WKUP);
preg(CM_AUTOIDLE_PLL);
preg(CM_AUTOIDLE_DSP);
preg(CM_AUTOIDLE_MDM);
preg(CM_ICLKEN1_CORE);
preg(CM_ICLKEN2_CORE);
preg(CM_ICLKEN3_CORE);
preg(CM_ICLKEN4_CORE);
preg(CM_ICLKEN_GFX);
preg(CM_ICLKEN_WKUP);
preg(CM_ICLKEN_DSP);
preg(CM_ICLKEN_MDM);
preg(CM_IDLEST1_CORE);
preg(CM_IDLEST2_CORE);
preg(CM_IDLEST3_CORE);
preg(CM_IDLEST4_CORE);
preg(CM_IDLEST_GFX);
preg(CM_IDLEST_WKUP);
preg(CM_IDLEST_CKGEN);
preg(CM_IDLEST_DSP);
preg(CM_IDLEST_MDM);
preg(RM_RSTST_MPU);
preg(RM_RSTST_GFX);
preg(RM_RSTST_WKUP);
preg(RM_RSTST_DSP);
preg(RM_RSTST_MDM);
preg(PM_WKDEP_MPU);
preg(PM_WKDEP_CORE);
preg(PM_WKDEP_GFX);
preg(PM_WKDEP_DSP);
preg(PM_WKDEP_MDM);
preg(CM_FCLKEN_WKUP);
preg(CM_ICLKEN_WKUP);
preg(CM_IDLEST_WKUP);
preg(CM_AUTOIDLE_WKUP);
preg(CM_CLKSEL_WKUP);
preg(PM_WKEN_WKUP);
preg(PM_WKST_WKUP);
}
static inline void omap2_pm_save_registers(void)
{
/* Save interrupt registers */
OMAP24XX_SAVE(INTC_MIR0);
OMAP24XX_SAVE(INTC_MIR1);
OMAP24XX_SAVE(INTC_MIR2);
/* Save power control registers */
OMAP24XX_SAVE(CM_CLKSTCTRL_MPU);
OMAP24XX_SAVE(CM_CLKSTCTRL_CORE);
OMAP24XX_SAVE(CM_CLKSTCTRL_GFX);
OMAP24XX_SAVE(CM_CLKSTCTRL_DSP);
OMAP24XX_SAVE(CM_CLKSTCTRL_MDM);
/* Save power state registers */
OMAP24XX_SAVE(PM_PWSTCTRL_MPU);
OMAP24XX_SAVE(PM_PWSTCTRL_CORE);
OMAP24XX_SAVE(PM_PWSTCTRL_GFX);
OMAP24XX_SAVE(PM_PWSTCTRL_DSP);
OMAP24XX_SAVE(PM_PWSTCTRL_MDM);
/* Save autoidle registers */
OMAP24XX_SAVE(CM_AUTOIDLE1_CORE);
OMAP24XX_SAVE(CM_AUTOIDLE2_CORE);
OMAP24XX_SAVE(CM_AUTOIDLE3_CORE);
OMAP24XX_SAVE(CM_AUTOIDLE4_CORE);
OMAP24XX_SAVE(CM_AUTOIDLE_WKUP);
OMAP24XX_SAVE(CM_AUTOIDLE_PLL);
OMAP24XX_SAVE(CM_AUTOIDLE_DSP);
OMAP24XX_SAVE(CM_AUTOIDLE_MDM);
/* Save idle state registers */
OMAP24XX_SAVE(CM_IDLEST1_CORE);
OMAP24XX_SAVE(CM_IDLEST2_CORE);
OMAP24XX_SAVE(CM_IDLEST3_CORE);
OMAP24XX_SAVE(CM_IDLEST4_CORE);
OMAP24XX_SAVE(CM_IDLEST_GFX);
OMAP24XX_SAVE(CM_IDLEST_WKUP);
OMAP24XX_SAVE(CM_IDLEST_CKGEN);
OMAP24XX_SAVE(CM_IDLEST_DSP);
OMAP24XX_SAVE(CM_IDLEST_MDM);
/* Save clock registers */
OMAP24XX_SAVE(CM_FCLKEN1_CORE);
OMAP24XX_SAVE(CM_FCLKEN2_CORE);
OMAP24XX_SAVE(CM_ICLKEN1_CORE);
OMAP24XX_SAVE(CM_ICLKEN2_CORE);
OMAP24XX_SAVE(CM_ICLKEN3_CORE);
OMAP24XX_SAVE(CM_ICLKEN4_CORE);
}
static inline void omap2_pm_restore_registers(void)
{
/* Restore clock state registers */
OMAP24XX_RESTORE(CM_CLKSTCTRL_MPU);
OMAP24XX_RESTORE(CM_CLKSTCTRL_CORE);
OMAP24XX_RESTORE(CM_CLKSTCTRL_GFX);
OMAP24XX_RESTORE(CM_CLKSTCTRL_DSP);
OMAP24XX_RESTORE(CM_CLKSTCTRL_MDM);
/* Restore power state registers */
OMAP24XX_RESTORE(PM_PWSTCTRL_MPU);
OMAP24XX_RESTORE(PM_PWSTCTRL_CORE);
OMAP24XX_RESTORE(PM_PWSTCTRL_GFX);
OMAP24XX_RESTORE(PM_PWSTCTRL_DSP);
OMAP24XX_RESTORE(PM_PWSTCTRL_MDM);
/* Restore idle state registers */
OMAP24XX_RESTORE(CM_IDLEST1_CORE);
OMAP24XX_RESTORE(CM_IDLEST2_CORE);
OMAP24XX_RESTORE(CM_IDLEST3_CORE);
OMAP24XX_RESTORE(CM_IDLEST4_CORE);
OMAP24XX_RESTORE(CM_IDLEST_GFX);
OMAP24XX_RESTORE(CM_IDLEST_WKUP);
OMAP24XX_RESTORE(CM_IDLEST_CKGEN);
OMAP24XX_RESTORE(CM_IDLEST_DSP);
OMAP24XX_RESTORE(CM_IDLEST_MDM);
/* Restore autoidle registers */
OMAP24XX_RESTORE(CM_AUTOIDLE1_CORE);
OMAP24XX_RESTORE(CM_AUTOIDLE2_CORE);
OMAP24XX_RESTORE(CM_AUTOIDLE3_CORE);
OMAP24XX_RESTORE(CM_AUTOIDLE4_CORE);
OMAP24XX_RESTORE(CM_AUTOIDLE_WKUP);
OMAP24XX_RESTORE(CM_AUTOIDLE_PLL);
OMAP24XX_RESTORE(CM_AUTOIDLE_DSP);
OMAP24XX_RESTORE(CM_AUTOIDLE_MDM);
/* Restore clock registers */
OMAP24XX_RESTORE(CM_FCLKEN1_CORE);
OMAP24XX_RESTORE(CM_FCLKEN2_CORE);
OMAP24XX_RESTORE(CM_ICLKEN1_CORE);
OMAP24XX_RESTORE(CM_ICLKEN2_CORE);
OMAP24XX_RESTORE(CM_ICLKEN3_CORE);
OMAP24XX_RESTORE(CM_ICLKEN4_CORE);
/* REVISIT: Clear interrupts here */
/* Restore interrupt registers */
OMAP24XX_RESTORE(INTC_MIR0);
OMAP24XX_RESTORE(INTC_MIR1);
OMAP24XX_RESTORE(INTC_MIR2);
}
static int omap2_pm_suspend(void)
{
int processor_type = 0;
/* REVISIT: 0x21 or 0x26? */
if (cpu_is_omap2420())
processor_type = 0x21;
if (!processor_type)
return -ENOTSUPP;
local_irq_disable();
local_fiq_disable();
omap2_pm_save_registers();
/* Disable interrupts except for the wake events */
INTC_MIR_SET0 = 0xffffffff & ~INT0_WAKE_MASK;
INTC_MIR_SET1 = 0xffffffff & ~INT1_WAKE_MASK;
INTC_MIR_SET2 = 0xffffffff & ~INT2_WAKE_MASK;
pmdomain_set_autoidle();
/* Clear old wake-up events */
PM_WKST1_CORE = 0;
PM_WKST2_CORE = 0;
PM_WKST_WKUP = 0;
/* Enable wake-up events */
PM_WKEN1_CORE = (1 << 22) | (1 << 21); /* UART1 & 2 */
PM_WKEN2_CORE = (1 << 2); /* UART3 */
PM_WKEN_WKUP = (1 << 2) | (1 << 0); /* GPIO & GPT1 */
/* Disable clocks except for CM_ICLKEN2_CORE. It gets disabled
* in the SRAM suspend code */
CM_FCLKEN1_CORE = 0;
CM_FCLKEN2_CORE = 0;
CM_ICLKEN1_CORE = 0;
CM_ICLKEN3_CORE = 0;
CM_ICLKEN4_CORE = 0;
omap2_pm_debug("Status before suspend");
/* Must wait for serial buffers to clear */
mdelay(200);
/* Jump to SRAM suspend code
* REVISIT: When is this SDRC_DLLB_CTRL?
*/
omap2_sram_suspend(SDRC_DLLA_CTRL, processor_type);
/* Back from sleep */
omap2_pm_restore_registers();
local_fiq_enable();
local_irq_enable();
return 0;
}
static int omap2_pm_enter(suspend_state_t state)
{
int ret = 0;
switch (state)
{
case PM_SUSPEND_STANDBY:
case PM_SUSPEND_MEM:
/* FIXME: Add suspend */
ret = omap2_pm_suspend();
break;
case PM_SUSPEND_DISK:
return -ENOTSUPP;
ret = -ENOTSUPP;
break;
default:
return -EINVAL;
ret = -EINVAL;
}
return 0;
return ret;
}
static int omap2_pm_finish(suspend_state_t state)
@ -143,6 +400,8 @@ int __init omap2_pm_init(void)
pm_set_ops(&omap_pm_ops);
pm_idle = omap2_pm_idle;
pmdomain_init();
return 0;
}

2
include/asm-arm/arch-omap/irqs.h
View file

@ -258,6 +258,8 @@
#define INT_24XX_MCBSP1_IRQ_RX 60
#define INT_24XX_MCBSP2_IRQ_TX 62
#define INT_24XX_MCBSP2_IRQ_RX 63
#define INT_24XX_UART1_IRQ 72
#define INT_24XX_UART2_IRQ 73
#define INT_24XX_UART3_IRQ 74
/* Max. 128 level 2 IRQs (OMAP1610), 192 GPIOs (OMAP730) and

33
include/asm-arm/arch-omap/pm.h
View file

@ -299,10 +299,43 @@ enum omap24xx_save_state {
OMAP24XX_SLEEP_SAVE_INTC_MIR0,
OMAP24XX_SLEEP_SAVE_INTC_MIR1,
OMAP24XX_SLEEP_SAVE_INTC_MIR2,
OMAP24XX_SLEEP_SAVE_CM_CLKSTCTRL_MPU,
OMAP24XX_SLEEP_SAVE_CM_CLKSTCTRL_CORE,
OMAP24XX_SLEEP_SAVE_CM_CLKSTCTRL_GFX,
OMAP24XX_SLEEP_SAVE_CM_CLKSTCTRL_DSP,
OMAP24XX_SLEEP_SAVE_CM_CLKSTCTRL_MDM,
OMAP24XX_SLEEP_SAVE_PM_PWSTCTRL_MPU,
OMAP24XX_SLEEP_SAVE_PM_PWSTCTRL_CORE,
OMAP24XX_SLEEP_SAVE_PM_PWSTCTRL_GFX,
OMAP24XX_SLEEP_SAVE_PM_PWSTCTRL_DSP,
OMAP24XX_SLEEP_SAVE_PM_PWSTCTRL_MDM,
OMAP24XX_SLEEP_SAVE_CM_IDLEST1_CORE,
OMAP24XX_SLEEP_SAVE_CM_IDLEST2_CORE,
OMAP24XX_SLEEP_SAVE_CM_IDLEST3_CORE,
OMAP24XX_SLEEP_SAVE_CM_IDLEST4_CORE,
OMAP24XX_SLEEP_SAVE_CM_IDLEST_GFX,
OMAP24XX_SLEEP_SAVE_CM_IDLEST_WKUP,
OMAP24XX_SLEEP_SAVE_CM_IDLEST_CKGEN,
OMAP24XX_SLEEP_SAVE_CM_IDLEST_DSP,
OMAP24XX_SLEEP_SAVE_CM_IDLEST_MDM,
OMAP24XX_SLEEP_SAVE_CM_AUTOIDLE1_CORE,
OMAP24XX_SLEEP_SAVE_CM_AUTOIDLE2_CORE,
OMAP24XX_SLEEP_SAVE_CM_AUTOIDLE3_CORE,
OMAP24XX_SLEEP_SAVE_CM_AUTOIDLE4_CORE,
OMAP24XX_SLEEP_SAVE_CM_AUTOIDLE_WKUP,
OMAP24XX_SLEEP_SAVE_CM_AUTOIDLE_PLL,
OMAP24XX_SLEEP_SAVE_CM_AUTOIDLE_DSP,
OMAP24XX_SLEEP_SAVE_CM_AUTOIDLE_MDM,
OMAP24XX_SLEEP_SAVE_CM_FCLKEN1_CORE,
OMAP24XX_SLEEP_SAVE_CM_FCLKEN2_CORE,
OMAP24XX_SLEEP_SAVE_CM_ICLKEN1_CORE,
OMAP24XX_SLEEP_SAVE_CM_ICLKEN2_CORE,
OMAP24XX_SLEEP_SAVE_CM_ICLKEN3_CORE,
OMAP24XX_SLEEP_SAVE_CM_ICLKEN4_CORE,
OMAP24XX_SLEEP_SAVE_GPIO1_IRQENABLE1,
OMAP24XX_SLEEP_SAVE_GPIO2_IRQENABLE1,