diff options
Diffstat (limited to 'arch/arm/mach-omap2')
-rw-r--r-- | arch/arm/mach-omap2/irq.c | 133 |
1 files changed, 66 insertions, 67 deletions
diff --git a/arch/arm/mach-omap2/irq.c b/arch/arm/mach-omap2/irq.c index 4e8705d3d8d8..480a9a7c8445 100644 --- a/arch/arm/mach-omap2/irq.c +++ b/arch/arm/mach-omap2/irq.c @@ -57,10 +57,6 @@ * for each bank.. when in doubt, consult the TRM. */ -static struct irq_domain *domain; -static void __iomem *omap_irq_base; -static int omap_nr_irqs = 96; - /* Structure to save interrupt controller context */ struct omap_intc_regs { u32 sysconfig; @@ -70,6 +66,11 @@ struct omap_intc_regs { u32 ilr[INTCPS_NR_ILR_REGS]; u32 mir[INTCPS_NR_MIR_REGS]; }; +static struct omap_intc_regs intc_context; + +static struct irq_domain *domain; +static void __iomem *omap_irq_base; +static int omap_nr_irqs = 96; /* INTC bank register get/set */ static void intc_writel(u32 reg, u32 val) @@ -82,6 +83,61 @@ static u32 intc_readl(u32 reg) return readl_relaxed(omap_irq_base + reg); } +void omap_intc_save_context(void) +{ + int i; + + intc_context.sysconfig = + intc_readl(INTC_SYSCONFIG); + intc_context.protection = + intc_readl(INTC_PROTECTION); + intc_context.idle = + intc_readl(INTC_IDLE); + intc_context.threshold = + intc_readl(INTC_THRESHOLD); + + for (i = 0; i < omap_nr_irqs; i++) + intc_context.ilr[i] = + intc_readl((INTC_ILR0 + 0x4 * i)); + for (i = 0; i < INTCPS_NR_MIR_REGS; i++) + intc_context.mir[i] = + intc_readl(INTC_MIR0 + (0x20 * i)); +} + +void omap_intc_restore_context(void) +{ + int i; + + intc_writel(INTC_SYSCONFIG, intc_context.sysconfig); + intc_writel(INTC_PROTECTION, intc_context.protection); + intc_writel(INTC_IDLE, intc_context.idle); + intc_writel(INTC_THRESHOLD, intc_context.threshold); + + for (i = 0; i < omap_nr_irqs; i++) + intc_writel(INTC_ILR0 + 0x4 * i, + intc_context.ilr[i]); + + for (i = 0; i < INTCPS_NR_MIR_REGS; i++) + intc_writel(INTC_MIR0 + 0x20 * i, + intc_context.mir[i]); + /* MIRs are saved and restore with other PRCM registers */ +} + +void omap3_intc_prepare_idle(void) +{ + /* + * Disable autoidle as it can stall interrupt controller, + * cf. errata ID i540 for 3430 (all revisions up to 3.1.x) + */ + intc_writel(INTC_SYSCONFIG, 0); +} + +void omap3_intc_resume_idle(void) +{ + /* Re-enable autoidle */ + intc_writel(INTC_SYSCONFIG, 1); +} + /* XXX: FIQ and additional INTC support (only MPU at the moment) */ static void omap_ack_irq(struct irq_data *d) { @@ -125,6 +181,12 @@ int omap_irq_pending(void) return 0; } +void omap3_intc_suspend(void) +{ + /* A pending interrupt would prevent OMAP from entering suspend */ + omap_ack_irq(NULL); +} + static __init void omap_alloc_gc(void __iomem *base, unsigned int irq_start, unsigned int num) { @@ -265,69 +327,6 @@ void __init omap_intc_of_init(void) of_irq_init(irq_match); } -static struct omap_intc_regs intc_context; - -void omap_intc_save_context(void) -{ - int i; - - intc_context.sysconfig = - intc_readl(INTC_SYSCONFIG); - intc_context.protection = - intc_readl(INTC_PROTECTION); - intc_context.idle = - intc_readl(INTC_IDLE); - intc_context.threshold = - intc_readl(INTC_THRESHOLD); - - for (i = 0; i < omap_nr_irqs; i++) - intc_context.ilr[i] = - intc_readl((INTC_ILR0 + 0x4 * i)); - for (i = 0; i < INTCPS_NR_MIR_REGS; i++) - intc_context.mir[i] = - intc_readl(INTC_MIR0 + (0x20 * i)); -} - -void omap_intc_restore_context(void) -{ - int i; - - intc_writel(INTC_SYSCONFIG, intc_context.sysconfig); - intc_writel(INTC_PROTECTION, intc_context.protection); - intc_writel(INTC_IDLE, intc_context.idle); - intc_writel(INTC_THRESHOLD, intc_context.threshold); - - for (i = 0; i < omap_nr_irqs; i++) - intc_writel(INTC_ILR0 + 0x4 * i, - intc_context.ilr[i]); - - for (i = 0; i < INTCPS_NR_MIR_REGS; i++) - intc_writel(INTC_MIR0 + 0x20 * i, - intc_context.mir[i]); - /* MIRs are saved and restore with other PRCM registers */ -} - -void omap3_intc_suspend(void) -{ - /* A pending interrupt would prevent OMAP from entering suspend */ - omap_ack_irq(NULL); -} - -void omap3_intc_prepare_idle(void) -{ - /* - * Disable autoidle as it can stall interrupt controller, - * cf. errata ID i540 for 3430 (all revisions up to 3.1.x) - */ - intc_writel(INTC_SYSCONFIG, 0); -} - -void omap3_intc_resume_idle(void) -{ - /* Re-enable autoidle */ - intc_writel(INTC_SYSCONFIG, 1); -} - asmlinkage void __exception_irq_entry omap3_intc_handle_irq(struct pt_regs *regs) { omap_intc_handle_irq(regs); |