diff options
author | Kukjin Kim <kgene.kim@samsung.com> | 2011-02-14 16:10:55 +0900 |
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committer | Kukjin Kim <kgene.kim@samsung.com> | 2011-02-22 13:51:15 +0900 |
commit | c81a24ff8f4efda02ffaa0c3170155550bcae339 (patch) | |
tree | e26a5c26cda9291b4d4881be128db254cbf66fe5 /arch/arm/mach-s5pv310/irq-combiner.c | |
parent | b3ed3a174c419702eddf9fb28636f6e4baa29d03 (diff) | |
download | blackbird-op-linux-c81a24ff8f4efda02ffaa0c3170155550bcae339.tar.gz blackbird-op-linux-c81a24ff8f4efda02ffaa0c3170155550bcae339.zip |
ARM: EXYNOS4: Update IRQ part
This patch updates IRQ part of EXYNOS4 according to the change of
ARCH name, EXYNOS4.
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm/mach-s5pv310/irq-combiner.c')
-rw-r--r-- | arch/arm/mach-s5pv310/irq-combiner.c | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/arch/arm/mach-s5pv310/irq-combiner.c b/arch/arm/mach-s5pv310/irq-combiner.c deleted file mode 100644 index 1ea4a9e83bbe..000000000000 --- a/arch/arm/mach-s5pv310/irq-combiner.c +++ /dev/null @@ -1,127 +0,0 @@ -/* linux/arch/arm/mach-s5pv310/irq-combiner.c - * - * Copyright (c) 2010 Samsung Electronics Co., Ltd. - * http://www.samsung.com - * - * Based on arch/arm/common/gic.c - * - * IRQ COMBINER support - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. -*/ - -#include <linux/io.h> - -#include <asm/mach/irq.h> - -#define COMBINER_ENABLE_SET 0x0 -#define COMBINER_ENABLE_CLEAR 0x4 -#define COMBINER_INT_STATUS 0xC - -static DEFINE_SPINLOCK(irq_controller_lock); - -struct combiner_chip_data { - unsigned int irq_offset; - unsigned int irq_mask; - void __iomem *base; -}; - -static struct combiner_chip_data combiner_data[MAX_COMBINER_NR]; - -static inline void __iomem *combiner_base(struct irq_data *data) -{ - struct combiner_chip_data *combiner_data = - irq_data_get_irq_chip_data(data); - - return combiner_data->base; -} - -static void combiner_mask_irq(struct irq_data *data) -{ - u32 mask = 1 << (data->irq % 32); - - __raw_writel(mask, combiner_base(data) + COMBINER_ENABLE_CLEAR); -} - -static void combiner_unmask_irq(struct irq_data *data) -{ - u32 mask = 1 << (data->irq % 32); - - __raw_writel(mask, combiner_base(data) + COMBINER_ENABLE_SET); -} - -static void combiner_handle_cascade_irq(unsigned int irq, struct irq_desc *desc) -{ - struct combiner_chip_data *chip_data = get_irq_data(irq); - struct irq_chip *chip = get_irq_chip(irq); - unsigned int cascade_irq, combiner_irq; - unsigned long status; - - /* primary controller ack'ing */ - chip->irq_ack(&desc->irq_data); - - spin_lock(&irq_controller_lock); - status = __raw_readl(chip_data->base + COMBINER_INT_STATUS); - spin_unlock(&irq_controller_lock); - status &= chip_data->irq_mask; - - if (status == 0) - goto out; - - combiner_irq = __ffs(status); - - cascade_irq = combiner_irq + (chip_data->irq_offset & ~31); - if (unlikely(cascade_irq >= NR_IRQS)) - do_bad_IRQ(cascade_irq, desc); - else - generic_handle_irq(cascade_irq); - - out: - /* primary controller unmasking */ - chip->irq_unmask(&desc->irq_data); -} - -static struct irq_chip combiner_chip = { - .name = "COMBINER", - .irq_mask = combiner_mask_irq, - .irq_unmask = combiner_unmask_irq, -}; - -void __init combiner_cascade_irq(unsigned int combiner_nr, unsigned int irq) -{ - if (combiner_nr >= MAX_COMBINER_NR) - BUG(); - if (set_irq_data(irq, &combiner_data[combiner_nr]) != 0) - BUG(); - set_irq_chained_handler(irq, combiner_handle_cascade_irq); -} - -void __init combiner_init(unsigned int combiner_nr, void __iomem *base, - unsigned int irq_start) -{ - unsigned int i; - - if (combiner_nr >= MAX_COMBINER_NR) - BUG(); - - combiner_data[combiner_nr].base = base; - combiner_data[combiner_nr].irq_offset = irq_start; - combiner_data[combiner_nr].irq_mask = 0xff << ((combiner_nr % 4) << 3); - - /* Disable all interrupts */ - - __raw_writel(combiner_data[combiner_nr].irq_mask, - base + COMBINER_ENABLE_CLEAR); - - /* Setup the Linux IRQ subsystem */ - - for (i = irq_start; i < combiner_data[combiner_nr].irq_offset - + MAX_IRQ_IN_COMBINER; i++) { - set_irq_chip(i, &combiner_chip); - set_irq_chip_data(i, &combiner_data[combiner_nr]); - set_irq_handler(i, handle_level_irq); - set_irq_flags(i, IRQF_VALID | IRQF_PROBE); - } -} |