diff options
Diffstat (limited to 'arch/arm/mach-tegra/irq.c')
| -rw-r--r-- | arch/arm/mach-tegra/irq.c | 174 |
1 files changed, 74 insertions, 100 deletions
diff --git a/arch/arm/mach-tegra/irq.c b/arch/arm/mach-tegra/irq.c index 4330d8995b2..4956c3cea73 100644 --- a/arch/arm/mach-tegra/irq.c +++ b/arch/arm/mach-tegra/irq.c @@ -1,8 +1,8 @@ /* - * Copyright (C) 2010 Google, Inc. + * Copyright (C) 2011 Google, Inc. * * Author: - * Colin Cross <ccross@google.com> + * Colin Cross <ccross@android.com> * * Copyright (C) 2010, NVIDIA Corporation * @@ -18,8 +18,6 @@ */ #include <linux/kernel.h> -#include <linux/delay.h> -#include <linux/init.h> #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/io.h> @@ -27,134 +25,110 @@ #include <asm/hardware/gic.h> #include <mach/iomap.h> -#include <mach/legacy_irq.h> -#include <mach/suspend.h> #include "board.h" -#define PMC_CTRL 0x0 -#define PMC_CTRL_LATCH_WAKEUPS (1 << 5) -#define PMC_WAKE_MASK 0xc -#define PMC_WAKE_LEVEL 0x10 -#define PMC_WAKE_STATUS 0x14 -#define PMC_SW_WAKE_STATUS 0x18 -#define PMC_DPD_SAMPLE 0x20 +#define INT_SYS_NR (INT_GPIO_BASE - INT_PRI_BASE) +#define INT_SYS_SZ (INT_SEC_BASE - INT_PRI_BASE) +#define PPI_NR ((INT_SYS_NR+INT_SYS_SZ-1)/INT_SYS_SZ) + +#define ICTLR_CPU_IEP_VFIQ 0x08 +#define ICTLR_CPU_IEP_FIR 0x14 +#define ICTLR_CPU_IEP_FIR_SET 0x18 +#define ICTLR_CPU_IEP_FIR_CLR 0x1c + +#define ICTLR_CPU_IER 0x20 +#define ICTLR_CPU_IER_SET 0x24 +#define ICTLR_CPU_IER_CLR 0x28 +#define ICTLR_CPU_IEP_CLASS 0x2C + +#define ICTLR_COP_IER 0x30 +#define ICTLR_COP_IER_SET 0x34 +#define ICTLR_COP_IER_CLR 0x38 +#define ICTLR_COP_IEP_CLASS 0x3c + +#define NUM_ICTLRS 4 +#define FIRST_LEGACY_IRQ 32 + +static void __iomem *ictlr_reg_base[] = { + IO_ADDRESS(TEGRA_PRIMARY_ICTLR_BASE), + IO_ADDRESS(TEGRA_SECONDARY_ICTLR_BASE), + IO_ADDRESS(TEGRA_TERTIARY_ICTLR_BASE), + IO_ADDRESS(TEGRA_QUATERNARY_ICTLR_BASE), +}; -static void __iomem *pmc = IO_ADDRESS(TEGRA_PMC_BASE); +static inline void tegra_irq_write_mask(unsigned int irq, unsigned long reg) +{ + void __iomem *base; + u32 mask; -static u32 tegra_lp0_wake_enb; -static u32 tegra_lp0_wake_level; -static u32 tegra_lp0_wake_level_any; + BUG_ON(irq < FIRST_LEGACY_IRQ || + irq >= FIRST_LEGACY_IRQ + NUM_ICTLRS * 32); -static void (*tegra_gic_mask_irq)(struct irq_data *d); -static void (*tegra_gic_unmask_irq)(struct irq_data *d); -static void (*tegra_gic_ack_irq)(struct irq_data *d); + base = ictlr_reg_base[(irq - FIRST_LEGACY_IRQ) / 32]; + mask = BIT((irq - FIRST_LEGACY_IRQ) % 32); -/* ensures that sufficient time is passed for a register write to - * serialize into the 32KHz domain */ -static void pmc_32kwritel(u32 val, unsigned long offs) -{ - writel(val, pmc + offs); - udelay(130); + __raw_writel(mask, base + reg); } -int tegra_set_lp1_wake(int irq, int enable) +static void tegra_mask(struct irq_data *d) { - return tegra_legacy_irq_set_wake(irq, enable); + if (d->irq < FIRST_LEGACY_IRQ) + return; + + tegra_irq_write_mask(d->irq, ICTLR_CPU_IER_CLR); } -void tegra_set_lp0_wake_pads(u32 wake_enb, u32 wake_level, u32 wake_any) +static void tegra_unmask(struct irq_data *d) { - u32 temp; - u32 status; - u32 lvl; - - wake_level &= wake_enb; - wake_any &= wake_enb; + if (d->irq < FIRST_LEGACY_IRQ) + return; - wake_level |= (tegra_lp0_wake_level & tegra_lp0_wake_enb); - wake_any |= (tegra_lp0_wake_level_any & tegra_lp0_wake_enb); - - wake_enb |= tegra_lp0_wake_enb; - - pmc_32kwritel(0, PMC_SW_WAKE_STATUS); - temp = readl(pmc + PMC_CTRL); - temp |= PMC_CTRL_LATCH_WAKEUPS; - pmc_32kwritel(temp, PMC_CTRL); - temp &= ~PMC_CTRL_LATCH_WAKEUPS; - pmc_32kwritel(temp, PMC_CTRL); - status = readl(pmc + PMC_SW_WAKE_STATUS); - lvl = readl(pmc + PMC_WAKE_LEVEL); - - /* flip the wakeup trigger for any-edge triggered pads - * which are currently asserting as wakeups */ - lvl ^= status; - lvl &= wake_any; - - wake_level |= lvl; - - writel(wake_level, pmc + PMC_WAKE_LEVEL); - /* Enable DPD sample to trigger sampling pads data and direction - * in which pad will be driven during lp0 mode*/ - writel(0x1, pmc + PMC_DPD_SAMPLE); - - writel(wake_enb, pmc + PMC_WAKE_MASK); + tegra_irq_write_mask(d->irq, ICTLR_CPU_IER_SET); } -static void tegra_mask(struct irq_data *d) +static void tegra_ack(struct irq_data *d) { - tegra_gic_mask_irq(d); - tegra_legacy_mask_irq(d->irq); -} + if (d->irq < FIRST_LEGACY_IRQ) + return; -static void tegra_unmask(struct irq_data *d) -{ - tegra_gic_unmask_irq(d); - tegra_legacy_unmask_irq(d->irq); + tegra_irq_write_mask(d->irq, ICTLR_CPU_IEP_FIR_CLR); } -static void tegra_ack(struct irq_data *d) +static void tegra_eoi(struct irq_data *d) { - tegra_legacy_force_irq_clr(d->irq); - tegra_gic_ack_irq(d); + if (d->irq < FIRST_LEGACY_IRQ) + return; + + tegra_irq_write_mask(d->irq, ICTLR_CPU_IEP_FIR_CLR); } static int tegra_retrigger(struct irq_data *d) { - tegra_legacy_force_irq_set(d->irq); + if (d->irq < FIRST_LEGACY_IRQ) + return 0; + + tegra_irq_write_mask(d->irq, ICTLR_CPU_IEP_FIR_SET); + return 1; } -static struct irq_chip tegra_irq = { - .name = "PPI", - .irq_ack = tegra_ack, - .irq_mask = tegra_mask, - .irq_unmask = tegra_unmask, - .irq_retrigger = tegra_retrigger, -}; - void __init tegra_init_irq(void) { - struct irq_chip *gic; - unsigned int i; - int irq; + int i; - tegra_init_legacy_irq(); + for (i = 0; i < NUM_ICTLRS; i++) { + void __iomem *ictlr = ictlr_reg_base[i]; + writel(~0, ictlr + ICTLR_CPU_IER_CLR); + writel(0, ictlr + ICTLR_CPU_IEP_CLASS); + } + + gic_arch_extn.irq_ack = tegra_ack; + gic_arch_extn.irq_eoi = tegra_eoi; + gic_arch_extn.irq_mask = tegra_mask; + gic_arch_extn.irq_unmask = tegra_unmask; + gic_arch_extn.irq_retrigger = tegra_retrigger; gic_init(0, 29, IO_ADDRESS(TEGRA_ARM_INT_DIST_BASE), IO_ADDRESS(TEGRA_ARM_PERIF_BASE + 0x100)); - - gic = irq_get_chip(29); - tegra_gic_unmask_irq = gic->irq_unmask; - tegra_gic_mask_irq = gic->irq_mask; - tegra_gic_ack_irq = gic->irq_ack; -#ifdef CONFIG_SMP - tegra_irq.irq_set_affinity = gic->irq_set_affinity; -#endif - - for (i = 0; i < INT_MAIN_NR; i++) { - irq = INT_PRI_BASE + i; - irq_set_chip_and_handler(irq, &tegra_irq, handle_level_irq); - set_irq_flags(irq, IRQF_VALID); - } } |