From 902ca2297180fe97f840427c114cc6dc7e77375e Mon Sep 17 00:00:00 2001 From: Chao Xie Date: Mon, 7 May 2012 11:24:01 +0800 Subject: ARM: mmp: add pm support for pxa910 add suspend/resume functionality for pxa910 Signed-off-by: Chao Xie Signed-off-by: Raul Xiong Signed-off-by: Haojian Zhuang --- arch/arm/mach-mmp/Makefile | 1 + arch/arm/mach-mmp/include/mach/pm-pxa910.h | 77 ++++++++ arch/arm/mach-mmp/irq.c | 6 + arch/arm/mach-mmp/pm-pxa910.c | 285 +++++++++++++++++++++++++++++ 4 files changed, 369 insertions(+) create mode 100644 arch/arm/mach-mmp/include/mach/pm-pxa910.h create mode 100644 arch/arm/mach-mmp/pm-pxa910.c (limited to 'arch/arm/mach-mmp') diff --git a/arch/arm/mach-mmp/Makefile b/arch/arm/mach-mmp/Makefile index 7d60cef417e..b786f7e6cd1 100644 --- a/arch/arm/mach-mmp/Makefile +++ b/arch/arm/mach-mmp/Makefile @@ -10,6 +10,7 @@ obj-$(CONFIG_CPU_PXA910) += pxa910.o obj-$(CONFIG_CPU_MMP2) += mmp2.o sram.o ifeq ($(CONFIG_PM),y) +obj-$(CONFIG_CPU_PXA910) += pm-pxa910.o obj-$(CONFIG_CPU_MMP2) += pm-mmp2.o endif diff --git a/arch/arm/mach-mmp/include/mach/pm-pxa910.h b/arch/arm/mach-mmp/include/mach/pm-pxa910.h new file mode 100644 index 00000000000..8cac8ab5253 --- /dev/null +++ b/arch/arm/mach-mmp/include/mach/pm-pxa910.h @@ -0,0 +1,77 @@ +/* + * PXA910 Power Management Routines + * + * This software program is licensed subject to the GNU General Public License + * (GPL).Version 2,June 1991, available at http://www.fsf.org/copyleft/gpl.html + * + * (C) Copyright 2009 Marvell International Ltd. + * All Rights Reserved + */ + +#ifndef __PXA910_PM_H__ +#define __PXA910_PM_H__ + +#define APMU_MOH_IDLE_CFG APMU_REG(0x0018) +#define APMU_MOH_IDLE_CFG_MOH_IDLE (1 << 1) +#define APMU_MOH_IDLE_CFG_MOH_PWRDWN (1 << 5) +#define APMU_MOH_IDLE_CFG_MOH_SRAM_PWRDWN (1 << 6) +#define APMU_MOH_IDLE_CFG_MOH_PWR_SW(x) (((x) & 0x3) << 16) +#define APMU_MOH_IDLE_CFG_MOH_L2_PWR_SW(x) (((x) & 0x3) << 18) +#define APMU_MOH_IDLE_CFG_MOH_DIS_MC_SW_REQ (1 << 21) +#define APMU_MOH_IDLE_CFG_MOH_MC_WAKE_EN (1 << 20) + +#define APMU_SQU_CLK_GATE_CTRL APMU_REG(0x001c) +#define APMU_MC_HW_SLP_TYPE APMU_REG(0x00b0) + +#define MPMU_FCCR MPMU_REG(0x0008) +#define MPMU_APCR MPMU_REG(0x1000) +#define MPMU_APCR_AXISD (1 << 31) +#define MPMU_APCR_DSPSD (1 << 30) +#define MPMU_APCR_SLPEN (1 << 29) +#define MPMU_APCR_DTCMSD (1 << 28) +#define MPMU_APCR_DDRCORSD (1 << 27) +#define MPMU_APCR_APBSD (1 << 26) +#define MPMU_APCR_BBSD (1 << 25) +#define MPMU_APCR_SLPWP0 (1 << 23) +#define MPMU_APCR_SLPWP1 (1 << 22) +#define MPMU_APCR_SLPWP2 (1 << 21) +#define MPMU_APCR_SLPWP3 (1 << 20) +#define MPMU_APCR_VCTCXOSD (1 << 19) +#define MPMU_APCR_SLPWP4 (1 << 18) +#define MPMU_APCR_SLPWP5 (1 << 17) +#define MPMU_APCR_SLPWP6 (1 << 16) +#define MPMU_APCR_SLPWP7 (1 << 15) +#define MPMU_APCR_MSASLPEN (1 << 14) +#define MPMU_APCR_STBYEN (1 << 13) + +#define MPMU_AWUCRM MPMU_REG(0x104c) +#define MPMU_AWUCRM_AP_ASYNC_INT (1 << 25) +#define MPMU_AWUCRM_AP_FULL_IDLE (1 << 24) +#define MPMU_AWUCRM_SDH1 (1 << 23) +#define MPMU_AWUCRM_SDH2 (1 << 22) +#define MPMU_AWUCRM_KEYPRESS (1 << 21) +#define MPMU_AWUCRM_TRACKBALL (1 << 20) +#define MPMU_AWUCRM_NEWROTARY (1 << 19) +#define MPMU_AWUCRM_RTC_ALARM (1 << 17) +#define MPMU_AWUCRM_AP2_TIMER_3 (1 << 13) +#define MPMU_AWUCRM_AP2_TIMER_2 (1 << 12) +#define MPMU_AWUCRM_AP2_TIMER_1 (1 << 11) +#define MPMU_AWUCRM_AP1_TIMER_3 (1 << 10) +#define MPMU_AWUCRM_AP1_TIMER_2 (1 << 9) +#define MPMU_AWUCRM_AP1_TIMER_1 (1 << 8) +#define MPMU_AWUCRM_WAKEUP(x) (1 << ((x) & 0x7)) + +enum { + POWER_MODE_ACTIVE = 0, + POWER_MODE_CORE_INTIDLE, + POWER_MODE_CORE_EXTIDLE, + POWER_MODE_APPS_IDLE, + POWER_MODE_APPS_SLEEP, + POWER_MODE_SYS_SLEEP, + POWER_MODE_HIBERNATE, + POWER_MODE_UDR, +}; + +extern int pxa910_set_wake(struct irq_data *data, unsigned int on); + +#endif diff --git a/arch/arm/mach-mmp/irq.c b/arch/arm/mach-mmp/irq.c index 04935f15623..fcfe0e3bd70 100644 --- a/arch/arm/mach-mmp/irq.c +++ b/arch/arm/mach-mmp/irq.c @@ -26,6 +26,9 @@ #ifdef CONFIG_CPU_MMP2 #include #endif +#ifdef CONFIG_CPU_PXA910 +#include +#endif #include "common.h" @@ -213,6 +216,9 @@ void __init icu_init_irq(void) set_irq_flags(irq, IRQF_VALID); } irq_set_default_host(icu_data[0].domain); +#ifdef CONFIG_CPU_PXA910 + icu_irq_chip.irq_set_wake = pxa910_set_wake; +#endif } /* MMP2 (ARMv7) */ diff --git a/arch/arm/mach-mmp/pm-pxa910.c b/arch/arm/mach-mmp/pm-pxa910.c new file mode 100644 index 00000000000..48981ca801a --- /dev/null +++ b/arch/arm/mach-mmp/pm-pxa910.c @@ -0,0 +1,285 @@ +/* + * PXA910 Power Management Routines + * + * This software program is licensed subject to the GNU General Public License + * (GPL).Version 2,June 1991, available at http://www.fsf.org/copyleft/gpl.html + * + * (C) Copyright 2009 Marvell International Ltd. + * All Rights Reserved + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +int pxa910_set_wake(struct irq_data *data, unsigned int on) +{ + int irq = data->irq; + struct irq_desc *desc = irq_to_desc(data->irq); + uint32_t awucrm = 0, apcr = 0; + + if (unlikely(irq >= nr_irqs)) { + pr_err("IRQ nubmers are out of boundary!\n"); + return -EINVAL; + } + + if (on) { + if (desc->action) + desc->action->flags |= IRQF_NO_SUSPEND; + } else { + if (desc->action) + desc->action->flags &= ~IRQF_NO_SUSPEND; + } + + /* setting wakeup sources */ + switch (irq) { + /* wakeup line 2 */ + case IRQ_PXA910_AP_GPIO: + awucrm = MPMU_AWUCRM_WAKEUP(2); + apcr |= MPMU_APCR_SLPWP2; + break; + /* wakeup line 3 */ + case IRQ_PXA910_KEYPAD: + awucrm = MPMU_AWUCRM_WAKEUP(3) | MPMU_AWUCRM_KEYPRESS; + apcr |= MPMU_APCR_SLPWP3; + break; + case IRQ_PXA910_ROTARY: + awucrm = MPMU_AWUCRM_WAKEUP(3) | MPMU_AWUCRM_NEWROTARY; + apcr |= MPMU_APCR_SLPWP3; + break; + case IRQ_PXA910_TRACKBALL: + awucrm = MPMU_AWUCRM_WAKEUP(3) | MPMU_AWUCRM_TRACKBALL; + apcr |= MPMU_APCR_SLPWP3; + break; + /* wakeup line 4 */ + case IRQ_PXA910_AP1_TIMER1: + awucrm = MPMU_AWUCRM_WAKEUP(4) | MPMU_AWUCRM_AP1_TIMER_1; + apcr |= MPMU_APCR_SLPWP4; + break; + case IRQ_PXA910_AP1_TIMER2: + awucrm = MPMU_AWUCRM_WAKEUP(4) | MPMU_AWUCRM_AP1_TIMER_2; + apcr |= MPMU_APCR_SLPWP4; + break; + case IRQ_PXA910_AP1_TIMER3: + awucrm = MPMU_AWUCRM_WAKEUP(4) | MPMU_AWUCRM_AP1_TIMER_3; + apcr |= MPMU_APCR_SLPWP4; + break; + case IRQ_PXA910_AP2_TIMER1: + awucrm = MPMU_AWUCRM_WAKEUP(4) | MPMU_AWUCRM_AP2_TIMER_1; + apcr |= MPMU_APCR_SLPWP4; + break; + case IRQ_PXA910_AP2_TIMER2: + awucrm = MPMU_AWUCRM_WAKEUP(4) | MPMU_AWUCRM_AP2_TIMER_2; + apcr |= MPMU_APCR_SLPWP4; + break; + case IRQ_PXA910_AP2_TIMER3: + awucrm = MPMU_AWUCRM_WAKEUP(4) | MPMU_AWUCRM_AP2_TIMER_3; + apcr |= MPMU_APCR_SLPWP4; + break; + case IRQ_PXA910_RTC_ALARM: + awucrm = MPMU_AWUCRM_WAKEUP(4) | MPMU_AWUCRM_RTC_ALARM; + apcr |= MPMU_APCR_SLPWP4; + break; + /* wakeup line 5 */ + case IRQ_PXA910_USB1: + case IRQ_PXA910_USB2: + awucrm = MPMU_AWUCRM_WAKEUP(5); + apcr |= MPMU_APCR_SLPWP5; + break; + /* wakeup line 6 */ + case IRQ_PXA910_MMC: + awucrm = MPMU_AWUCRM_WAKEUP(6) + | MPMU_AWUCRM_SDH1 + | MPMU_AWUCRM_SDH2; + apcr |= MPMU_APCR_SLPWP6; + break; + /* wakeup line 7 */ + case IRQ_PXA910_PMIC_INT: + awucrm = MPMU_AWUCRM_WAKEUP(7); + apcr |= MPMU_APCR_SLPWP7; + break; + default: + if (irq >= IRQ_GPIO_START && irq < IRQ_BOARD_START) { + awucrm = MPMU_AWUCRM_WAKEUP(2); + apcr |= MPMU_APCR_SLPWP2; + } else + printk(KERN_ERR "Error: no defined wake up source irq: %d\n", + irq); + } + + if (on) { + if (awucrm) { + awucrm |= __raw_readl(MPMU_AWUCRM); + __raw_writel(awucrm, MPMU_AWUCRM); + } + if (apcr) { + apcr = ~apcr & __raw_readl(MPMU_APCR); + __raw_writel(apcr, MPMU_APCR); + } + } else { + if (awucrm) { + awucrm = ~awucrm & __raw_readl(MPMU_AWUCRM); + __raw_writel(awucrm, MPMU_AWUCRM); + } + if (apcr) { + apcr |= __raw_readl(MPMU_APCR); + __raw_writel(apcr, MPMU_APCR); + } + } + return 0; +} + +void pxa910_pm_enter_lowpower_mode(int state) +{ + uint32_t idle_cfg, apcr; + + idle_cfg = __raw_readl(APMU_MOH_IDLE_CFG); + apcr = __raw_readl(MPMU_APCR); + + apcr &= ~(MPMU_APCR_DDRCORSD | MPMU_APCR_APBSD | MPMU_APCR_AXISD + | MPMU_APCR_VCTCXOSD | MPMU_APCR_STBYEN); + idle_cfg &= ~(APMU_MOH_IDLE_CFG_MOH_IDLE + | APMU_MOH_IDLE_CFG_MOH_PWRDWN); + + switch (state) { + case POWER_MODE_UDR: + /* only shutdown APB in UDR */ + apcr |= MPMU_APCR_STBYEN | MPMU_APCR_APBSD; + /* fall through */ + case POWER_MODE_SYS_SLEEP: + apcr |= MPMU_APCR_SLPEN; /* set the SLPEN bit */ + apcr |= MPMU_APCR_VCTCXOSD; /* set VCTCXOSD */ + /* fall through */ + case POWER_MODE_APPS_SLEEP: + apcr |= MPMU_APCR_DDRCORSD; /* set DDRCORSD */ + /* fall through */ + case POWER_MODE_APPS_IDLE: + apcr |= MPMU_APCR_AXISD; /* set AXISDD bit */ + /* fall through */ + case POWER_MODE_CORE_EXTIDLE: + idle_cfg |= APMU_MOH_IDLE_CFG_MOH_IDLE; + idle_cfg |= APMU_MOH_IDLE_CFG_MOH_PWRDWN; + idle_cfg |= APMU_MOH_IDLE_CFG_MOH_PWR_SW(3) + | APMU_MOH_IDLE_CFG_MOH_L2_PWR_SW(3); + /* fall through */ + case POWER_MODE_CORE_INTIDLE: + break; + } + + /* program the memory controller hardware sleep type and auto wakeup */ + idle_cfg |= APMU_MOH_IDLE_CFG_MOH_DIS_MC_SW_REQ; + idle_cfg |= APMU_MOH_IDLE_CFG_MOH_MC_WAKE_EN; + __raw_writel(0x0, APMU_MC_HW_SLP_TYPE); /* auto refresh */ + + /* set DSPSD, DTCMSD, BBSD, MSASLPEN */ + apcr |= MPMU_APCR_DSPSD | MPMU_APCR_DTCMSD | MPMU_APCR_BBSD + | MPMU_APCR_MSASLPEN; + + /*always set SLEPEN bit mainly for MSA*/ + apcr |= MPMU_APCR_SLPEN; + + /* finally write the registers back */ + __raw_writel(idle_cfg, APMU_MOH_IDLE_CFG); + __raw_writel(apcr, MPMU_APCR); + +} + +static int pxa910_pm_enter(suspend_state_t state) +{ + unsigned int idle_cfg, reg = 0; + + /*pmic thread not completed,exit;otherwise system can't be waked up*/ + reg = __raw_readl(ICU_INT_CONF(IRQ_PXA910_PMIC_INT)); + if ((reg & 0x3) == 0) + return -EAGAIN; + + idle_cfg = __raw_readl(APMU_MOH_IDLE_CFG); + idle_cfg |= APMU_MOH_IDLE_CFG_MOH_PWRDWN + | APMU_MOH_IDLE_CFG_MOH_SRAM_PWRDWN; + __raw_writel(idle_cfg, APMU_MOH_IDLE_CFG); + + /* disable L2 */ + outer_disable(); + /* wait for l2 idle */ + while (!(readl(CIU_REG(0x8)) & (1 << 16))) + udelay(1); + + cpu_do_idle(); + + /* enable L2 */ + outer_resume(); + /* wait for l2 idle */ + while (!(readl(CIU_REG(0x8)) & (1 << 16))) + udelay(1); + + idle_cfg = __raw_readl(APMU_MOH_IDLE_CFG); + idle_cfg &= ~(APMU_MOH_IDLE_CFG_MOH_PWRDWN + | APMU_MOH_IDLE_CFG_MOH_SRAM_PWRDWN); + __raw_writel(idle_cfg, APMU_MOH_IDLE_CFG); + + return 0; +} + +/* + * Called after processes are frozen, but before we shut down devices. + */ +static int pxa910_pm_prepare(void) +{ + pxa910_pm_enter_lowpower_mode(POWER_MODE_UDR); + return 0; +} + +/* + * Called after devices are re-setup, but before processes are thawed. + */ +static void pxa910_pm_finish(void) +{ + pxa910_pm_enter_lowpower_mode(POWER_MODE_CORE_INTIDLE); +} + +static int pxa910_pm_valid(suspend_state_t state) +{ + return ((state == PM_SUSPEND_STANDBY) || (state == PM_SUSPEND_MEM)); +} + +static const struct platform_suspend_ops pxa910_pm_ops = { + .valid = pxa910_pm_valid, + .prepare = pxa910_pm_prepare, + .enter = pxa910_pm_enter, + .finish = pxa910_pm_finish, +}; + +static int __init pxa910_pm_init(void) +{ + uint32_t awucrm = 0; + + if (!cpu_is_pxa910()) + return -EIO; + + suspend_set_ops(&pxa910_pm_ops); + + /* Set the following bits for MMP3 playback with VCTXO on */ + __raw_writel(__raw_readl(APMU_SQU_CLK_GATE_CTRL) | (1 << 30), + APMU_SQU_CLK_GATE_CTRL); + __raw_writel(__raw_readl(MPMU_FCCR) | (1 << 28), MPMU_FCCR); + + awucrm |= MPMU_AWUCRM_AP_ASYNC_INT | MPMU_AWUCRM_AP_FULL_IDLE; + __raw_writel(awucrm, MPMU_AWUCRM); + + return 0; +} + +late_initcall(pxa910_pm_init); -- cgit v1.2.3