From 61f9c58da57a80b0df1ced18a28cbbaebd4d417a Mon Sep 17 00:00:00 2001 From: Manuel Lauss Date: Sun, 21 Dec 2008 09:26:27 +0100 Subject: MIPS: Alchemy: new userspace suspend interface for development boards. Replace the current sysctl-based suspend interface with a new sysfs- based one which also uses the Linux-2.6 suspend model. To configure wakeup sources, a subtree for the demoboards is created under /sys/power/db1x: sys/ `-- power `-- db1x |-- gpio0 |-- gpio1 |-- gpio2 |-- gpio3 |-- gpio4 |-- gpio5 |-- gpio6 |-- gpio7 |-- timer |-- timer_timeout |-- wakemsk `-- wakesrc The nodes 'gpio[0-7]' and 'timer' configure the GPIO0..7 and M2 bits of the SYS_WAKEMSK (wakeup source enable) register. Writing '1' enables a wakesource, 0 disables it. The 'timer_timeout' node holds the timeout in seconds after which the TOYMATCH2 event should wake the system. The 'wakesrc' node holds the SYS_WAKESRC register after wakeup (in hex), the 'wakemsk' node can be used to get/set the wakeup mask directly. For example, to have the timer wake the system after 10 seconds of sleep, the following must be done in userspace: echo 10 > /sys/power/db1x/timer_timeout echo 1 > /sys/power/db1x/timer echo mem > /sys/power/sleep This patch also removes the homebrew CPU frequency switching code. I don't understand how it could have ever worked reliably; it does not communicate the clock changes to peripheral devices other than uarts. Signed-off-by: Manuel Lauss Signed-off-by: Ralf Baechle create mode 100644 arch/mips/alchemy/devboards/pm.c --- arch/mips/alchemy/common/irq.c | 44 ------------------------------------------ 1 file changed, 44 deletions(-) (limited to 'arch/mips/alchemy/common/irq.c') diff --git a/arch/mips/alchemy/common/irq.c b/arch/mips/alchemy/common/irq.c index c54384779fb9..c88c821b4c36 100644 --- a/arch/mips/alchemy/common/irq.c +++ b/arch/mips/alchemy/common/irq.c @@ -37,8 +37,6 @@ #include #endif -static DEFINE_SPINLOCK(irq_lock); - static int au1x_ic_settype(unsigned int irq, unsigned int flow_type); /* per-processor fixed function irqs */ @@ -611,45 +609,3 @@ void __init arch_init_irq(void) set_c0_status(IE_IRQ0 | IE_IRQ1 | IE_IRQ2 | IE_IRQ3); } - -unsigned long save_local_and_disable(int controller) -{ - int i; - unsigned long flags, mask; - - spin_lock_irqsave(&irq_lock, flags); - if (controller) { - mask = au_readl(IC1_MASKSET); - for (i = 0; i < 32; i++) - au1x_ic1_mask(i + AU1000_INTC1_INT_BASE); - } else { - mask = au_readl(IC0_MASKSET); - for (i = 0; i < 32; i++) - au1x_ic0_mask(i + AU1000_INTC0_INT_BASE); - } - spin_unlock_irqrestore(&irq_lock, flags); - - return mask; -} - -void restore_local_and_enable(int controller, unsigned long mask) -{ - int i; - unsigned long flags, new_mask; - - spin_lock_irqsave(&irq_lock, flags); - for (i = 0; i < 32; i++) - if (mask & (1 << i)) { - if (controller) - au1x_ic1_unmask(i + AU1000_INTC1_INT_BASE); - else - au1x_ic0_unmask(i + AU1000_INTC0_INT_BASE); - } - - if (controller) - new_mask = au_readl(IC1_MASKSET); - else - new_mask = au_readl(IC0_MASKSET); - - spin_unlock_irqrestore(&irq_lock, flags); -} -- cgit v1.2.3-55-g7522