From 26f908186f923291999833e9d563259834bdca06 Mon Sep 17 00:00:00 2001 From: David Anders Date: Tue, 26 Sep 2006 17:46:00 +0100 Subject: [PATCH] [ARM] 3862/2: S3C2410 - add basic power management support for AML M5900 series this patch registers the wakeup irq, sets a gpio pin to indicate the status of system for suspend/resume operations, and adds the machine to the supported machines for use with the simtec-pm Signed-off-by: David Anders Signed-off-by: Ben Dooks Signed-off-by: Russell King --- arch/arm/mach-s3c2410/Kconfig | 2 +- arch/arm/mach-s3c2410/mach-amlm5900.c | 25 +++++++++++++++++++++++-- arch/arm/mach-s3c2410/pm-simtec.c | 3 ++- arch/arm/mach-s3c2410/s3c2410-pm.c | 9 +++++++++ 4 files changed, 35 insertions(+), 4 deletions(-) diff --git a/arch/arm/mach-s3c2410/Kconfig b/arch/arm/mach-s3c2410/Kconfig index e50a73f93d3d..df37594c30f8 100644 --- a/arch/arm/mach-s3c2410/Kconfig +++ b/arch/arm/mach-s3c2410/Kconfig @@ -292,7 +292,7 @@ config S3C2410_PM_CHECK_CHUNKSIZE config PM_SIMTEC bool - depends on PM && (ARCH_BAST || MACH_VR1000) + depends on PM && (ARCH_BAST || MACH_VR1000 || MACH_AML_M5900) default y config S3C2410_LOWLEVEL_UART_PORT diff --git a/arch/arm/mach-s3c2410/mach-amlm5900.c b/arch/arm/mach-s3c2410/mach-amlm5900.c index 0c9b7dafbe90..ba5109af40b4 100644 --- a/arch/arm/mach-s3c2410/mach-amlm5900.c +++ b/arch/arm/mach-s3c2410/mach-amlm5900.c @@ -225,13 +225,34 @@ static struct s3c2410fb_mach_info __initdata amlm5900_lcd_info = { }; #endif -static void __init amlm5900_init(void) +static irqreturn_t +amlm5900_wake_interrupt(int irq, void *ignored, struct pt_regs *regs) { + return IRQ_HANDLED; +} +static void amlm5900_init_pm(void) +{ + int ret = 0; + + ret = request_irq(IRQ_EINT9, &amlm5900_wake_interrupt, + IRQF_TRIGGER_RISING | IRQF_SHARED, + "amlm5900_wakeup", &amlm5900_wake_interrupt); + if (ret != 0) { + printk(KERN_ERR "AML-M5900: no wakeup irq, %d?\n", ret); + } else { + enable_irq_wake(IRQ_EINT9); + /* configure the suspend/resume status pin */ + s3c2410_gpio_cfgpin(S3C2410_GPF2, S3C2410_GPF2_OUTP); + s3c2410_gpio_pullup(S3C2410_GPF2, 0); + } +} +static void __init amlm5900_init(void) +{ + amlm5900_init_pm(); #ifdef CONFIG_FB_S3C2410 s3c24xx_fb_set_platdata(&amlm5900_lcd_info); #endif - } MACHINE_START(AML_M5900, "AML_M5900") diff --git a/arch/arm/mach-s3c2410/pm-simtec.c b/arch/arm/mach-s3c2410/pm-simtec.c index 7b244566a436..42cd05e298f8 100644 --- a/arch/arm/mach-s3c2410/pm-simtec.c +++ b/arch/arm/mach-s3c2410/pm-simtec.c @@ -49,7 +49,8 @@ static __init int pm_simtec_init(void) /* check which machine we are running on */ if (!machine_is_bast() && !machine_is_vr1000() && - !machine_is_anubis() && !machine_is_osiris()) + !machine_is_anubis() && !machine_is_osiris() && + !machine_is_aml_m5900()) return 0; printk(KERN_INFO "Simtec Board Power Manangement" COPYRIGHT "\n"); diff --git a/arch/arm/mach-s3c2410/s3c2410-pm.c b/arch/arm/mach-s3c2410/s3c2410-pm.c index 3080d25a12de..e51d76669512 100644 --- a/arch/arm/mach-s3c2410/s3c2410-pm.c +++ b/arch/arm/mach-s3c2410/s3c2410-pm.c @@ -29,6 +29,8 @@ #include #include +#include + #include #include "cpu.h" @@ -49,6 +51,10 @@ static void s3c2410_pm_prepare(void) DBG("GSTATUS3 0x%08x\n", __raw_readl(S3C2410_GSTATUS3)); DBG("GSTATUS4 0x%08x\n", __raw_readl(S3C2410_GSTATUS4)); + + if ( machine_is_aml_m5900() ) + s3c2410_gpio_setpin(S3C2410_GPF2, 1); + } int s3c2410_pm_resume(struct sys_device *dev) @@ -61,6 +67,9 @@ int s3c2410_pm_resume(struct sys_device *dev) tmp &= S3C2410_GSTATUS2_OFFRESET; __raw_writel(tmp, S3C2410_GSTATUS2); + if ( machine_is_aml_m5900() ) + s3c2410_gpio_setpin(S3C2410_GPF2, 0); + return 0; } -- 2.20.1