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Diffstat (limited to 'arch/arm/plat-s5p/irq-gpioint.c')
-rw-r--r--arch/arm/plat-s5p/irq-gpioint.c237
1 files changed, 0 insertions, 237 deletions
diff --git a/arch/arm/plat-s5p/irq-gpioint.c b/arch/arm/plat-s5p/irq-gpioint.c
deleted file mode 100644
index 0e5dc8cbf5e..00000000000
--- a/arch/arm/plat-s5p/irq-gpioint.c
+++ /dev/null
@@ -1,237 +0,0 @@
-/* linux/arch/arm/plat-s5p/irq-gpioint.c
- *
- * Copyright (c) 2010 Samsung Electronics Co., Ltd.
- * Author: Kyungmin Park <kyungmin.park@samsung.com>
- * Author: Joonyoung Shim <jy0922.shim@samsung.com>
- * Author: Marek Szyprowski <m.szyprowski@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/io.h>
-#include <linux/gpio.h>
-
-#include <mach/map.h>
-#include <plat/gpio-core.h>
-#include <plat/gpio-cfg.h>
-
-#define S5P_GPIOREG(x) (S5P_VA_GPIO + (x))
-
-#define GPIOINT_CON_OFFSET 0x700
-#define GPIOINT_MASK_OFFSET 0x900
-#define GPIOINT_PEND_OFFSET 0xA00
-
-static struct s3c_gpio_chip *irq_chips[S5P_GPIOINT_GROUP_MAXNR];
-
-static int s5p_gpioint_get_group(unsigned int irq)
-{
- struct gpio_chip *chip = get_irq_data(irq);
- struct s3c_gpio_chip *s3c_chip = container_of(chip,
- struct s3c_gpio_chip, chip);
- int group;
-
- for (group = 0; group < S5P_GPIOINT_GROUP_MAXNR; group++)
- if (s3c_chip == irq_chips[group])
- break;
-
- return group;
-}
-
-static int s5p_gpioint_get_offset(unsigned int irq)
-{
- struct gpio_chip *chip = get_irq_data(irq);
- struct s3c_gpio_chip *s3c_chip = container_of(chip,
- struct s3c_gpio_chip, chip);
-
- return irq - s3c_chip->irq_base;
-}
-
-static void s5p_gpioint_ack(unsigned int irq)
-{
- int group, offset, pend_offset;
- unsigned int value;
-
- group = s5p_gpioint_get_group(irq);
- offset = s5p_gpioint_get_offset(irq);
- pend_offset = group << 2;
-
- value = __raw_readl(S5P_GPIOREG(GPIOINT_PEND_OFFSET) + pend_offset);
- value |= 1 << offset;
- __raw_writel(value, S5P_GPIOREG(GPIOINT_PEND_OFFSET) + pend_offset);
-}
-
-static void s5p_gpioint_mask(unsigned int irq)
-{
- int group, offset, mask_offset;
- unsigned int value;
-
- group = s5p_gpioint_get_group(irq);
- offset = s5p_gpioint_get_offset(irq);
- mask_offset = group << 2;
-
- value = __raw_readl(S5P_GPIOREG(GPIOINT_MASK_OFFSET) + mask_offset);
- value |= 1 << offset;
- __raw_writel(value, S5P_GPIOREG(GPIOINT_MASK_OFFSET) + mask_offset);
-}
-
-static void s5p_gpioint_unmask(unsigned int irq)
-{
- int group, offset, mask_offset;
- unsigned int value;
-
- group = s5p_gpioint_get_group(irq);
- offset = s5p_gpioint_get_offset(irq);
- mask_offset = group << 2;
-
- value = __raw_readl(S5P_GPIOREG(GPIOINT_MASK_OFFSET) + mask_offset);
- value &= ~(1 << offset);
- __raw_writel(value, S5P_GPIOREG(GPIOINT_MASK_OFFSET) + mask_offset);
-}
-
-static void s5p_gpioint_mask_ack(unsigned int irq)
-{
- s5p_gpioint_mask(irq);
- s5p_gpioint_ack(irq);
-}
-
-static int s5p_gpioint_set_type(unsigned int irq, unsigned int type)
-{
- int group, offset, con_offset;
- unsigned int value;
-
- group = s5p_gpioint_get_group(irq);
- offset = s5p_gpioint_get_offset(irq);
- con_offset = group << 2;
-
- switch (type) {
- case IRQ_TYPE_EDGE_RISING:
- type = S5P_IRQ_TYPE_EDGE_RISING;
- break;
- case IRQ_TYPE_EDGE_FALLING:
- type = S5P_IRQ_TYPE_EDGE_FALLING;
- break;
- case IRQ_TYPE_EDGE_BOTH:
- type = S5P_IRQ_TYPE_EDGE_BOTH;
- break;
- case IRQ_TYPE_LEVEL_HIGH:
- type = S5P_IRQ_TYPE_LEVEL_HIGH;
- break;
- case IRQ_TYPE_LEVEL_LOW:
- type = S5P_IRQ_TYPE_LEVEL_LOW;
- break;
- case IRQ_TYPE_NONE:
- default:
- printk(KERN_WARNING "No irq type\n");
- return -EINVAL;
- }
-
- value = __raw_readl(S5P_GPIOREG(GPIOINT_CON_OFFSET) + con_offset);
- value &= ~(0x7 << (offset * 0x4));
- value |= (type << (offset * 0x4));
- __raw_writel(value, S5P_GPIOREG(GPIOINT_CON_OFFSET) + con_offset);
-
- return 0;
-}
-
-struct irq_chip s5p_gpioint = {
- .name = "s5p_gpioint",
- .ack = s5p_gpioint_ack,
- .mask = s5p_gpioint_mask,
- .mask_ack = s5p_gpioint_mask_ack,
- .unmask = s5p_gpioint_unmask,
- .set_type = s5p_gpioint_set_type,
-};
-
-static void s5p_gpioint_handler(unsigned int irq, struct irq_desc *desc)
-{
- int group, offset, pend_offset, mask_offset;
- int real_irq;
- unsigned int pend, mask;
-
- for (group = 0; group < S5P_GPIOINT_GROUP_MAXNR; group++) {
- pend_offset = group << 2;
- pend = __raw_readl(S5P_GPIOREG(GPIOINT_PEND_OFFSET) +
- pend_offset);
- if (!pend)
- continue;
-
- mask_offset = group << 2;
- mask = __raw_readl(S5P_GPIOREG(GPIOINT_MASK_OFFSET) +
- mask_offset);
- pend &= ~mask;
-
- for (offset = 0; offset < 8; offset++) {
- if (pend & (1 << offset)) {
- struct s3c_gpio_chip *chip = irq_chips[group];
- if (chip) {
- real_irq = chip->irq_base + offset;
- generic_handle_irq(real_irq);
- }
- }
- }
- }
-}
-
-static __init int s5p_gpioint_add(struct s3c_gpio_chip *chip)
-{
- static int used_gpioint_groups = 0;
- static bool handler_registered = 0;
- int irq, group = chip->group;
- int i;
-
- if (used_gpioint_groups >= S5P_GPIOINT_GROUP_COUNT)
- return -ENOMEM;
-
- chip->irq_base = S5P_GPIOINT_BASE +
- used_gpioint_groups * S5P_GPIOINT_GROUP_SIZE;
- used_gpioint_groups++;
-
- if (!handler_registered) {
- set_irq_chained_handler(IRQ_GPIOINT, s5p_gpioint_handler);
- handler_registered = 1;
- }
-
- irq_chips[group] = chip;
- for (i = 0; i < chip->chip.ngpio; i++) {
- irq = chip->irq_base + i;
- set_irq_chip(irq, &s5p_gpioint);
- set_irq_data(irq, &chip->chip);
- set_irq_handler(irq, handle_level_irq);
- set_irq_flags(irq, IRQF_VALID);
- }
- return 0;
-}
-
-int __init s5p_register_gpio_interrupt(int pin)
-{
- struct s3c_gpio_chip *my_chip = s3c_gpiolib_getchip(pin);
- int offset, group;
- int ret;
-
- if (!my_chip)
- return -EINVAL;
-
- offset = pin - my_chip->chip.base;
- group = my_chip->group;
-
- /* check if the group has been already registered */
- if (my_chip->irq_base)
- return my_chip->irq_base + offset;
-
- /* register gpio group */
- ret = s5p_gpioint_add(my_chip);
- if (ret == 0) {
- my_chip->chip.to_irq = samsung_gpiolib_to_irq;
- printk(KERN_INFO "Registered interrupt support for gpio group %d.\n",
- group);
- return my_chip->irq_base + offset;
- }
- return ret;
-}
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