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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/arch/arm/mach-sa1100/irq.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/arch/arm/mach-sa1100/irq.c')
-rw-r--r--ANDROID_3.4.5/arch/arm/mach-sa1100/irq.c341
1 files changed, 0 insertions, 341 deletions
diff --git a/ANDROID_3.4.5/arch/arm/mach-sa1100/irq.c b/ANDROID_3.4.5/arch/arm/mach-sa1100/irq.c
deleted file mode 100644
index 516ccc25..00000000
--- a/ANDROID_3.4.5/arch/arm/mach-sa1100/irq.c
+++ /dev/null
@@ -1,341 +0,0 @@
-/*
- * linux/arch/arm/mach-sa1100/irq.c
- *
- * Copyright (C) 1999-2001 Nicolas Pitre
- *
- * Generic IRQ handling for the SA11x0, GPIO 11-27 IRQ demultiplexing.
- *
- * 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/init.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/ioport.h>
-#include <linux/syscore_ops.h>
-
-#include <mach/hardware.h>
-#include <mach/irqs.h>
-#include <asm/mach/irq.h>
-
-#include "generic.h"
-
-
-/*
- * SA1100 GPIO edge detection for IRQs:
- * IRQs are generated on Falling-Edge, Rising-Edge, or both.
- * Use this instead of directly setting GRER/GFER.
- */
-static int GPIO_IRQ_rising_edge;
-static int GPIO_IRQ_falling_edge;
-static int GPIO_IRQ_mask = (1 << 11) - 1;
-
-/*
- * To get the GPIO number from an IRQ number
- */
-#define GPIO_11_27_IRQ(i) ((i) - 21)
-#define GPIO11_27_MASK(irq) (1 << GPIO_11_27_IRQ(irq))
-
-static int sa1100_gpio_type(struct irq_data *d, unsigned int type)
-{
- unsigned int mask;
-
- if (d->irq <= 10)
- mask = 1 << d->irq;
- else
- mask = GPIO11_27_MASK(d->irq);
-
- if (type == IRQ_TYPE_PROBE) {
- if ((GPIO_IRQ_rising_edge | GPIO_IRQ_falling_edge) & mask)
- return 0;
- type = IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING;
- }
-
- if (type & IRQ_TYPE_EDGE_RISING) {
- GPIO_IRQ_rising_edge |= mask;
- } else
- GPIO_IRQ_rising_edge &= ~mask;
- if (type & IRQ_TYPE_EDGE_FALLING) {
- GPIO_IRQ_falling_edge |= mask;
- } else
- GPIO_IRQ_falling_edge &= ~mask;
-
- GRER = GPIO_IRQ_rising_edge & GPIO_IRQ_mask;
- GFER = GPIO_IRQ_falling_edge & GPIO_IRQ_mask;
-
- return 0;
-}
-
-/*
- * GPIO IRQs must be acknowledged. This is for IRQs from 0 to 10.
- */
-static void sa1100_low_gpio_ack(struct irq_data *d)
-{
- GEDR = (1 << d->irq);
-}
-
-static void sa1100_low_gpio_mask(struct irq_data *d)
-{
- ICMR &= ~(1 << d->irq);
-}
-
-static void sa1100_low_gpio_unmask(struct irq_data *d)
-{
- ICMR |= 1 << d->irq;
-}
-
-static int sa1100_low_gpio_wake(struct irq_data *d, unsigned int on)
-{
- if (on)
- PWER |= 1 << d->irq;
- else
- PWER &= ~(1 << d->irq);
- return 0;
-}
-
-static struct irq_chip sa1100_low_gpio_chip = {
- .name = "GPIO-l",
- .irq_ack = sa1100_low_gpio_ack,
- .irq_mask = sa1100_low_gpio_mask,
- .irq_unmask = sa1100_low_gpio_unmask,
- .irq_set_type = sa1100_gpio_type,
- .irq_set_wake = sa1100_low_gpio_wake,
-};
-
-/*
- * IRQ11 (GPIO11 through 27) handler. We enter here with the
- * irq_controller_lock held, and IRQs disabled. Decode the IRQ
- * and call the handler.
- */
-static void
-sa1100_high_gpio_handler(unsigned int irq, struct irq_desc *desc)
-{
- unsigned int mask;
-
- mask = GEDR & 0xfffff800;
- do {
- /*
- * clear down all currently active IRQ sources.
- * We will be processing them all.
- */
- GEDR = mask;
-
- irq = IRQ_GPIO11;
- mask >>= 11;
- do {
- if (mask & 1)
- generic_handle_irq(irq);
- mask >>= 1;
- irq++;
- } while (mask);
-
- mask = GEDR & 0xfffff800;
- } while (mask);
-}
-
-/*
- * Like GPIO0 to 10, GPIO11-27 IRQs need to be handled specially.
- * In addition, the IRQs are all collected up into one bit in the
- * interrupt controller registers.
- */
-static void sa1100_high_gpio_ack(struct irq_data *d)
-{
- unsigned int mask = GPIO11_27_MASK(d->irq);
-
- GEDR = mask;
-}
-
-static void sa1100_high_gpio_mask(struct irq_data *d)
-{
- unsigned int mask = GPIO11_27_MASK(d->irq);
-
- GPIO_IRQ_mask &= ~mask;
-
- GRER &= ~mask;
- GFER &= ~mask;
-}
-
-static void sa1100_high_gpio_unmask(struct irq_data *d)
-{
- unsigned int mask = GPIO11_27_MASK(d->irq);
-
- GPIO_IRQ_mask |= mask;
-
- GRER = GPIO_IRQ_rising_edge & GPIO_IRQ_mask;
- GFER = GPIO_IRQ_falling_edge & GPIO_IRQ_mask;
-}
-
-static int sa1100_high_gpio_wake(struct irq_data *d, unsigned int on)
-{
- if (on)
- PWER |= GPIO11_27_MASK(d->irq);
- else
- PWER &= ~GPIO11_27_MASK(d->irq);
- return 0;
-}
-
-static struct irq_chip sa1100_high_gpio_chip = {
- .name = "GPIO-h",
- .irq_ack = sa1100_high_gpio_ack,
- .irq_mask = sa1100_high_gpio_mask,
- .irq_unmask = sa1100_high_gpio_unmask,
- .irq_set_type = sa1100_gpio_type,
- .irq_set_wake = sa1100_high_gpio_wake,
-};
-
-/*
- * We don't need to ACK IRQs on the SA1100 unless they're GPIOs
- * this is for internal IRQs i.e. from 11 to 31.
- */
-static void sa1100_mask_irq(struct irq_data *d)
-{
- ICMR &= ~(1 << d->irq);
-}
-
-static void sa1100_unmask_irq(struct irq_data *d)
-{
- ICMR |= (1 << d->irq);
-}
-
-/*
- * Apart form GPIOs, only the RTC alarm can be a wakeup event.
- */
-static int sa1100_set_wake(struct irq_data *d, unsigned int on)
-{
- if (d->irq == IRQ_RTCAlrm) {
- if (on)
- PWER |= PWER_RTC;
- else
- PWER &= ~PWER_RTC;
- return 0;
- }
- return -EINVAL;
-}
-
-static struct irq_chip sa1100_normal_chip = {
- .name = "SC",
- .irq_ack = sa1100_mask_irq,
- .irq_mask = sa1100_mask_irq,
- .irq_unmask = sa1100_unmask_irq,
- .irq_set_wake = sa1100_set_wake,
-};
-
-static struct resource irq_resource =
- DEFINE_RES_MEM_NAMED(0x90050000, SZ_64K, "irqs");
-
-static struct sa1100irq_state {
- unsigned int saved;
- unsigned int icmr;
- unsigned int iclr;
- unsigned int iccr;
-} sa1100irq_state;
-
-static int sa1100irq_suspend(void)
-{
- struct sa1100irq_state *st = &sa1100irq_state;
-
- st->saved = 1;
- st->icmr = ICMR;
- st->iclr = ICLR;
- st->iccr = ICCR;
-
- /*
- * Disable all GPIO-based interrupts.
- */
- ICMR &= ~(IC_GPIO11_27|IC_GPIO10|IC_GPIO9|IC_GPIO8|IC_GPIO7|
- IC_GPIO6|IC_GPIO5|IC_GPIO4|IC_GPIO3|IC_GPIO2|
- IC_GPIO1|IC_GPIO0);
-
- /*
- * Set the appropriate edges for wakeup.
- */
- GRER = PWER & GPIO_IRQ_rising_edge;
- GFER = PWER & GPIO_IRQ_falling_edge;
-
- /*
- * Clear any pending GPIO interrupts.
- */
- GEDR = GEDR;
-
- return 0;
-}
-
-static void sa1100irq_resume(void)
-{
- struct sa1100irq_state *st = &sa1100irq_state;
-
- if (st->saved) {
- ICCR = st->iccr;
- ICLR = st->iclr;
-
- GRER = GPIO_IRQ_rising_edge & GPIO_IRQ_mask;
- GFER = GPIO_IRQ_falling_edge & GPIO_IRQ_mask;
-
- ICMR = st->icmr;
- }
-}
-
-static struct syscore_ops sa1100irq_syscore_ops = {
- .suspend = sa1100irq_suspend,
- .resume = sa1100irq_resume,
-};
-
-static int __init sa1100irq_init_devicefs(void)
-{
- register_syscore_ops(&sa1100irq_syscore_ops);
- return 0;
-}
-
-device_initcall(sa1100irq_init_devicefs);
-
-void __init sa1100_init_irq(void)
-{
- unsigned int irq;
-
- request_resource(&iomem_resource, &irq_resource);
-
- /* disable all IRQs */
- ICMR = 0;
-
- /* all IRQs are IRQ, not FIQ */
- ICLR = 0;
-
- /* clear all GPIO edge detects */
- GFER = 0;
- GRER = 0;
- GEDR = -1;
-
- /*
- * Whatever the doc says, this has to be set for the wait-on-irq
- * instruction to work... on a SA1100 rev 9 at least.
- */
- ICCR = 1;
-
- for (irq = 0; irq <= 10; irq++) {
- irq_set_chip_and_handler(irq, &sa1100_low_gpio_chip,
- handle_edge_irq);
- set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
- }
-
- for (irq = 12; irq <= 31; irq++) {
- irq_set_chip_and_handler(irq, &sa1100_normal_chip,
- handle_level_irq);
- set_irq_flags(irq, IRQF_VALID);
- }
-
- for (irq = 32; irq <= 48; irq++) {
- irq_set_chip_and_handler(irq, &sa1100_high_gpio_chip,
- handle_edge_irq);
- set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
- }
-
- /*
- * Install handler for GPIO 11-27 edge detect interrupts
- */
- irq_set_chip(IRQ_GPIO11_27, &sa1100_normal_chip);
- irq_set_chained_handler(IRQ_GPIO11_27, sa1100_high_gpio_handler);
-
- sa1100_init_gpio();
-}