diff options
| -rw-r--r-- | arch/arm/mach-tegra/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/include/mach/legacy_irq.h | 31 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/legacy_irq.c | 114 |
3 files changed, 146 insertions, 1 deletions
diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile index 51e9370eed99..0a975b5fe493 100644 --- a/arch/arm/mach-tegra/Makefile +++ b/arch/arm/mach-tegra/Makefile @@ -1,6 +1,6 @@ obj-y += common.o obj-y += io.o -obj-y += irq.o +obj-y += irq.o legacy_irq.o obj-y += clock.o obj-y += timer.o obj-y += gpio.o diff --git a/arch/arm/mach-tegra/include/mach/legacy_irq.h b/arch/arm/mach-tegra/include/mach/legacy_irq.h new file mode 100644 index 000000000000..db1eb3dd04c8 --- /dev/null +++ b/arch/arm/mach-tegra/include/mach/legacy_irq.h @@ -0,0 +1,31 @@ +/* + * arch/arm/mach-tegra/include/mach/legacy_irq.h + * + * Copyright (C) 2010 Google, Inc. + * Author: Colin Cross <ccross@android.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef _ARCH_ARM_MACH_TEGRA_LEGARY_IRQ_H +#define _ARCH_ARM_MACH_TEGRA_LEGARY_IRQ_H + +void tegra_legacy_mask_irq(unsigned int irq); +void tegra_legacy_unmask_irq(unsigned int irq); +void tegra_legacy_select_fiq(unsigned int irq, bool fiq); +void tegra_legacy_force_irq_set(unsigned int irq); +void tegra_legacy_force_irq_clr(unsigned int irq); +int tegra_legacy_force_irq_status(unsigned int irq); +void tegra_legacy_select_fiq(unsigned int irq, bool fiq); +unsigned long tegra_legacy_vfiq(int nr); +unsigned long tegra_legacy_class(int nr); + +#endif diff --git a/arch/arm/mach-tegra/legacy_irq.c b/arch/arm/mach-tegra/legacy_irq.c new file mode 100644 index 000000000000..7cc8601c19ff --- /dev/null +++ b/arch/arm/mach-tegra/legacy_irq.c @@ -0,0 +1,114 @@ +/* + * arch/arm/mach-tegra/legacy_irq.c + * + * Copyright (C) 2010 Google, Inc. + * Author: Colin Cross <ccross@android.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/io.h> +#include <linux/kernel.h> +#include <mach/iomap.h> +#include <mach/legacy_irq.h> + +#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_CPU_IEP_VFIQ 0x08 +#define ICTLR_CPU_IEP_FIR 0x14 +#define ICTLR_CPU_IEP_FIR_SET 0x18 +#define ICTLR_CPU_IEP_FIR_CLR 0x1c + +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), +}; + +/* When going into deep sleep, the CPU is powered down, taking the GIC with it + In order to wake, the wake interrupts need to be enabled in the legacy + interrupt controller. */ +void tegra_legacy_unmask_irq(unsigned int irq) +{ + void __iomem *base; + pr_debug("%s: %d\n", __func__, irq); + + irq -= 32; + base = ictlr_reg_base[irq>>5]; + writel(1 << (irq & 31), base + ICTLR_CPU_IER_SET); +} + +void tegra_legacy_mask_irq(unsigned int irq) +{ + void __iomem *base; + pr_debug("%s: %d\n", __func__, irq); + + irq -= 32; + base = ictlr_reg_base[irq>>5]; + writel(1 << (irq & 31), base + ICTLR_CPU_IER_CLR); +} + +void tegra_legacy_force_irq_set(unsigned int irq) +{ + void __iomem *base; + pr_debug("%s: %d\n", __func__, irq); + + irq -= 32; + base = ictlr_reg_base[irq>>5]; + writel(1 << (irq & 31), base + ICTLR_CPU_IEP_FIR_SET); +} + +void tegra_legacy_force_irq_clr(unsigned int irq) +{ + void __iomem *base; + pr_debug("%s: %d\n", __func__, irq); + + irq -= 32; + base = ictlr_reg_base[irq>>5]; + writel(1 << (irq & 31), base + ICTLR_CPU_IEP_FIR_CLR); +} + +int tegra_legacy_force_irq_status(unsigned int irq) +{ + void __iomem *base; + pr_debug("%s: %d\n", __func__, irq); + + irq -= 32; + base = ictlr_reg_base[irq>>5]; + return !!(readl(base + ICTLR_CPU_IEP_FIR) & (1 << (irq & 31))); +} + +void tegra_legacy_select_fiq(unsigned int irq, bool fiq) +{ + void __iomem *base; + pr_debug("%s: %d\n", __func__, irq); + + irq -= 32; + base = ictlr_reg_base[irq>>5]; + writel(fiq << (irq & 31), base + ICTLR_CPU_IEP_CLASS); +} + +unsigned long tegra_legacy_vfiq(int nr) +{ + void __iomem *base; + base = ictlr_reg_base[nr]; + return readl(base + ICTLR_CPU_IEP_VFIQ); +} + +unsigned long tegra_legacy_class(int nr) +{ + void __iomem *base; + base = ictlr_reg_base[nr]; + return readl(base + ICTLR_CPU_IEP_CLASS); +} |