diff options
Diffstat (limited to 'arch/mips/alchemy/common/irq.c')
| -rw-r--r-- | arch/mips/alchemy/common/irq.c | 174 |
1 files changed, 90 insertions, 84 deletions
diff --git a/arch/mips/alchemy/common/irq.c b/arch/mips/alchemy/common/irq.c index b2821ace4d0..9f78ada83b3 100644 --- a/arch/mips/alchemy/common/irq.c +++ b/arch/mips/alchemy/common/irq.c @@ -29,6 +29,8 @@ #include <linux/init.h> #include <linux/interrupt.h> #include <linux/irq.h> +#include <linux/slab.h> +#include <linux/sysdev.h> #include <asm/irq_cpu.h> #include <asm/mipsregs.h> @@ -216,90 +218,6 @@ struct au1xxx_irqmap au1200_irqmap[] __initdata = { }; -#ifdef CONFIG_PM - -/* - * Save/restore the interrupt controller state. - * Called from the save/restore core registers as part of the - * au_sleep function in power.c.....maybe I should just pm_register() - * them instead? - */ -static unsigned int sleep_intctl_config0[2]; -static unsigned int sleep_intctl_config1[2]; -static unsigned int sleep_intctl_config2[2]; -static unsigned int sleep_intctl_src[2]; -static unsigned int sleep_intctl_assign[2]; -static unsigned int sleep_intctl_wake[2]; -static unsigned int sleep_intctl_mask[2]; - -void save_au1xxx_intctl(void) -{ - sleep_intctl_config0[0] = au_readl(IC0_CFG0RD); - sleep_intctl_config1[0] = au_readl(IC0_CFG1RD); - sleep_intctl_config2[0] = au_readl(IC0_CFG2RD); - sleep_intctl_src[0] = au_readl(IC0_SRCRD); - sleep_intctl_assign[0] = au_readl(IC0_ASSIGNRD); - sleep_intctl_wake[0] = au_readl(IC0_WAKERD); - sleep_intctl_mask[0] = au_readl(IC0_MASKRD); - - sleep_intctl_config0[1] = au_readl(IC1_CFG0RD); - sleep_intctl_config1[1] = au_readl(IC1_CFG1RD); - sleep_intctl_config2[1] = au_readl(IC1_CFG2RD); - sleep_intctl_src[1] = au_readl(IC1_SRCRD); - sleep_intctl_assign[1] = au_readl(IC1_ASSIGNRD); - sleep_intctl_wake[1] = au_readl(IC1_WAKERD); - sleep_intctl_mask[1] = au_readl(IC1_MASKRD); -} - -/* - * For most restore operations, we clear the entire register and - * then set the bits we found during the save. - */ -void restore_au1xxx_intctl(void) -{ - au_writel(0xffffffff, IC0_MASKCLR); au_sync(); - - au_writel(0xffffffff, IC0_CFG0CLR); au_sync(); - au_writel(sleep_intctl_config0[0], IC0_CFG0SET); au_sync(); - au_writel(0xffffffff, IC0_CFG1CLR); au_sync(); - au_writel(sleep_intctl_config1[0], IC0_CFG1SET); au_sync(); - au_writel(0xffffffff, IC0_CFG2CLR); au_sync(); - au_writel(sleep_intctl_config2[0], IC0_CFG2SET); au_sync(); - au_writel(0xffffffff, IC0_SRCCLR); au_sync(); - au_writel(sleep_intctl_src[0], IC0_SRCSET); au_sync(); - au_writel(0xffffffff, IC0_ASSIGNCLR); au_sync(); - au_writel(sleep_intctl_assign[0], IC0_ASSIGNSET); au_sync(); - au_writel(0xffffffff, IC0_WAKECLR); au_sync(); - au_writel(sleep_intctl_wake[0], IC0_WAKESET); au_sync(); - au_writel(0xffffffff, IC0_RISINGCLR); au_sync(); - au_writel(0xffffffff, IC0_FALLINGCLR); au_sync(); - au_writel(0x00000000, IC0_TESTBIT); au_sync(); - - au_writel(0xffffffff, IC1_MASKCLR); au_sync(); - - au_writel(0xffffffff, IC1_CFG0CLR); au_sync(); - au_writel(sleep_intctl_config0[1], IC1_CFG0SET); au_sync(); - au_writel(0xffffffff, IC1_CFG1CLR); au_sync(); - au_writel(sleep_intctl_config1[1], IC1_CFG1SET); au_sync(); - au_writel(0xffffffff, IC1_CFG2CLR); au_sync(); - au_writel(sleep_intctl_config2[1], IC1_CFG2SET); au_sync(); - au_writel(0xffffffff, IC1_SRCCLR); au_sync(); - au_writel(sleep_intctl_src[1], IC1_SRCSET); au_sync(); - au_writel(0xffffffff, IC1_ASSIGNCLR); au_sync(); - au_writel(sleep_intctl_assign[1], IC1_ASSIGNSET); au_sync(); - au_writel(0xffffffff, IC1_WAKECLR); au_sync(); - au_writel(sleep_intctl_wake[1], IC1_WAKESET); au_sync(); - au_writel(0xffffffff, IC1_RISINGCLR); au_sync(); - au_writel(0xffffffff, IC1_FALLINGCLR); au_sync(); - au_writel(0x00000000, IC1_TESTBIT); au_sync(); - - au_writel(sleep_intctl_mask[1], IC1_MASKSET); au_sync(); - - au_writel(sleep_intctl_mask[0], IC0_MASKSET); au_sync(); -} -#endif /* CONFIG_PM */ - - static void au1x_ic0_unmask(unsigned int irq_nr) { unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE; @@ -635,3 +553,91 @@ void __init arch_init_irq(void) break; } } + +struct alchemy_ic_sysdev { + struct sys_device sysdev; + void __iomem *base; + unsigned long pmdata[7]; +}; + +static int alchemy_ic_suspend(struct sys_device *dev, pm_message_t state) +{ + struct alchemy_ic_sysdev *icdev = + container_of(dev, struct alchemy_ic_sysdev, sysdev); + + icdev->pmdata[0] = __raw_readl(icdev->base + IC_CFG0RD); + icdev->pmdata[1] = __raw_readl(icdev->base + IC_CFG1RD); + icdev->pmdata[2] = __raw_readl(icdev->base + IC_CFG2RD); + icdev->pmdata[3] = __raw_readl(icdev->base + IC_SRCRD); + icdev->pmdata[4] = __raw_readl(icdev->base + IC_ASSIGNRD); + icdev->pmdata[5] = __raw_readl(icdev->base + IC_WAKERD); + icdev->pmdata[6] = __raw_readl(icdev->base + IC_MASKRD); + + return 0; +} + +static int alchemy_ic_resume(struct sys_device *dev) +{ + struct alchemy_ic_sysdev *icdev = + container_of(dev, struct alchemy_ic_sysdev, sysdev); + + __raw_writel(0xffffffff, icdev->base + IC_MASKCLR); + __raw_writel(0xffffffff, icdev->base + IC_CFG0CLR); + __raw_writel(0xffffffff, icdev->base + IC_CFG1CLR); + __raw_writel(0xffffffff, icdev->base + IC_CFG2CLR); + __raw_writel(0xffffffff, icdev->base + IC_SRCCLR); + __raw_writel(0xffffffff, icdev->base + IC_ASSIGNCLR); + __raw_writel(0xffffffff, icdev->base + IC_WAKECLR); + __raw_writel(0xffffffff, icdev->base + IC_RISINGCLR); + __raw_writel(0xffffffff, icdev->base + IC_FALLINGCLR); + __raw_writel(0x00000000, icdev->base + IC_TESTBIT); + wmb(); + __raw_writel(icdev->pmdata[0], icdev->base + IC_CFG0SET); + __raw_writel(icdev->pmdata[1], icdev->base + IC_CFG1SET); + __raw_writel(icdev->pmdata[2], icdev->base + IC_CFG2SET); + __raw_writel(icdev->pmdata[3], icdev->base + IC_SRCSET); + __raw_writel(icdev->pmdata[4], icdev->base + IC_ASSIGNSET); + __raw_writel(icdev->pmdata[5], icdev->base + IC_WAKESET); + wmb(); + + __raw_writel(icdev->pmdata[6], icdev->base + IC_MASKSET); + wmb(); + + return 0; +} + +static struct sysdev_class alchemy_ic_sysdev_class = { + .name = "ic", + .suspend = alchemy_ic_suspend, + .resume = alchemy_ic_resume, +}; + +static int __init alchemy_ic_sysdev_init(void) +{ + struct alchemy_ic_sysdev *icdev; + unsigned long icbase[2] = { IC0_PHYS_ADDR, IC1_PHYS_ADDR }; + int err, i; + + err = sysdev_class_register(&alchemy_ic_sysdev_class); + if (err) + return err; + + for (i = 0; i < 2; i++) { + icdev = kzalloc(sizeof(struct alchemy_ic_sysdev), GFP_KERNEL); + if (!icdev) + return -ENOMEM; + + icdev->base = ioremap(icbase[i], 0x1000); + + icdev->sysdev.id = i; + icdev->sysdev.cls = &alchemy_ic_sysdev_class; + err = sysdev_register(&icdev->sysdev); + if (err) { + kfree(icdev); + return err; + } + } + + return 0; +} +device_initcall(alchemy_ic_sysdev_init); |