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Diffstat (limited to 'arch/arm/plat-s5pc1xx/irq-eint.c')
-rw-r--r--arch/arm/plat-s5pc1xx/irq-eint.c281
1 files changed, 0 insertions, 281 deletions
diff --git a/arch/arm/plat-s5pc1xx/irq-eint.c b/arch/arm/plat-s5pc1xx/irq-eint.c
deleted file mode 100644
index 373122f57d56..000000000000
--- a/arch/arm/plat-s5pc1xx/irq-eint.c
+++ /dev/null
@@ -1,281 +0,0 @@
-/*
- * linux/arch/arm/plat-s5pc1xx/irq-eint.c
- *
- * Copyright 2009 Samsung Electronics Co.
- * Byungho Min <bhmin@samsung.com>
- * Kyungin Park <kyungmin.park@samsung.com>
- *
- * Based on plat-s3c64xx/irq-eint.c
- *
- * S5PC1XX - Interrupt handling for IRQ_EINT(x)
- *
- * 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/kernel.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/io.h>
-#include <linux/sysdev.h>
-#include <linux/pm.h>
-#include <linux/gpio.h>
-
-#include <asm/hardware/vic.h>
-
-#include <mach/map.h>
-
-#include <plat/gpio-cfg.h>
-#include <plat/gpio-ext.h>
-#include <plat/pm.h>
-#include <plat/regs-gpio.h>
-#include <plat/regs-irqtype.h>
-
-/*
- * bank is a group of external interrupt
- * bank0 means EINT0 ... EINT7
- * bank1 means EINT8 ... EINT15
- * bank2 means EINT16 ... EINT23
- * bank3 means EINT24 ... EINT31
- */
-
-static inline int s3c_get_eint(unsigned int irq)
-{
- int real;
-
- if (irq < IRQ_EINT16_31)
- real = (irq - IRQ_EINT0);
- else
- real = (irq - S3C_IRQ_EINT_BASE) + IRQ_EINT16_31 - IRQ_EINT0;
-
- return real;
-}
-
-static inline int s3c_get_bank(unsigned int irq)
-{
- return s3c_get_eint(irq) >> 3;
-}
-
-static inline int s3c_eint_to_bit(unsigned int irq)
-{
- int real, bit;
-
- real = s3c_get_eint(irq);
- bit = 1 << (real & (8 - 1));
-
- return bit;
-}
-
-static inline void s3c_irq_eint_mask(unsigned int irq)
-{
- u32 mask;
- u32 bank = s3c_get_bank(irq);
-
- mask = __raw_readl(S5PC1XX_WKUP_INT_MASK(bank));
- mask |= s3c_eint_to_bit(irq);
- __raw_writel(mask, S5PC1XX_WKUP_INT_MASK(bank));
-}
-
-static void s3c_irq_eint_unmask(unsigned int irq)
-{
- u32 mask;
- u32 bank = s3c_get_bank(irq);
-
- mask = __raw_readl(S5PC1XX_WKUP_INT_MASK(bank));
- mask &= ~(s3c_eint_to_bit(irq));
- __raw_writel(mask, S5PC1XX_WKUP_INT_MASK(bank));
-}
-
-static inline void s3c_irq_eint_ack(unsigned int irq)
-{
- u32 bank = s3c_get_bank(irq);
-
- __raw_writel(s3c_eint_to_bit(irq), S5PC1XX_WKUP_INT_PEND(bank));
-}
-
-static void s3c_irq_eint_maskack(unsigned int irq)
-{
- /* compiler should in-line these */
- s3c_irq_eint_mask(irq);
- s3c_irq_eint_ack(irq);
-}
-
-static int s3c_irq_eint_set_type(unsigned int irq, unsigned int type)
-{
- u32 bank = s3c_get_bank(irq);
- int real = s3c_get_eint(irq);
- int gpio, shift, sfn;
- u32 ctrl, con = 0;
-
- switch (type) {
- case IRQ_TYPE_NONE:
- printk(KERN_WARNING "No edge setting!\n");
- break;
-
- case IRQ_TYPE_EDGE_RISING:
- con = S5PC1XX_WKUP_INT_RISEEDGE;
- break;
-
- case IRQ_TYPE_EDGE_FALLING:
- con = S5PC1XX_WKUP_INT_FALLEDGE;
- break;
-
- case IRQ_TYPE_EDGE_BOTH:
- con = S5PC1XX_WKUP_INT_BOTHEDGE;
- break;
-
- case IRQ_TYPE_LEVEL_LOW:
- con = S5PC1XX_WKUP_INT_LOWLEV;
- break;
-
- case IRQ_TYPE_LEVEL_HIGH:
- con = S5PC1XX_WKUP_INT_HILEV;
- break;
-
- default:
- printk(KERN_ERR "No such irq type %d", type);
- return -EINVAL;
- }
-
- gpio = real & (8 - 1);
- shift = gpio << 2;
-
- ctrl = __raw_readl(S5PC1XX_WKUP_INT_CON(bank));
- ctrl &= ~(0x7 << shift);
- ctrl |= con << shift;
- __raw_writel(ctrl, S5PC1XX_WKUP_INT_CON(bank));
-
- switch (real) {
- case 0 ... 7:
- gpio = S5PC100_GPH0(gpio);
- break;
- case 8 ... 15:
- gpio = S5PC100_GPH1(gpio);
- break;
- case 16 ... 23:
- gpio = S5PC100_GPH2(gpio);
- break;
- case 24 ... 31:
- gpio = S5PC100_GPH3(gpio);
- break;
- default:
- return -EINVAL;
- }
-
- sfn = S3C_GPIO_SFN(0x2);
- s3c_gpio_cfgpin(gpio, sfn);
-
- return 0;
-}
-
-static struct irq_chip s3c_irq_eint = {
- .name = "EINT",
- .mask = s3c_irq_eint_mask,
- .unmask = s3c_irq_eint_unmask,
- .mask_ack = s3c_irq_eint_maskack,
- .ack = s3c_irq_eint_ack,
- .set_type = s3c_irq_eint_set_type,
- .set_wake = s3c_irqext_wake,
-};
-
-/* s3c_irq_demux_eint
- *
- * This function demuxes the IRQ from external interrupts,
- * from IRQ_EINT(16) to IRQ_EINT(31). It is designed to be inlined into
- * the specific handlers s3c_irq_demux_eintX_Y.
- */
-static inline void s3c_irq_demux_eint(unsigned int start, unsigned int end)
-{
- u32 status = __raw_readl(S5PC1XX_WKUP_INT_PEND((start >> 3)));
- u32 mask = __raw_readl(S5PC1XX_WKUP_INT_MASK((start >> 3)));
- unsigned int irq;
-
- status &= ~mask;
- status &= (1 << (end - start + 1)) - 1;
-
- for (irq = IRQ_EINT(start); irq <= IRQ_EINT(end); irq++) {
- if (status & 1)
- generic_handle_irq(irq);
-
- status >>= 1;
- }
-}
-
-static void s3c_irq_demux_eint16_31(unsigned int irq, struct irq_desc *desc)
-{
- s3c_irq_demux_eint(16, 23);
- s3c_irq_demux_eint(24, 31);
-}
-
-/*
- * Handle EINT0 ... EINT15 at VIC directly
- */
-static void s3c_irq_vic_eint_mask(unsigned int irq)
-{
- void __iomem *base = get_irq_chip_data(irq);
- unsigned int real;
-
- s3c_irq_eint_mask(irq);
- real = s3c_get_eint(irq);
- writel(1 << real, base + VIC_INT_ENABLE_CLEAR);
-}
-
-static void s3c_irq_vic_eint_unmask(unsigned int irq)
-{
- void __iomem *base = get_irq_chip_data(irq);
- unsigned int real;
-
- s3c_irq_eint_unmask(irq);
- real = s3c_get_eint(irq);
- writel(1 << real, base + VIC_INT_ENABLE);
-}
-
-static inline void s3c_irq_vic_eint_ack(unsigned int irq)
-{
- u32 bit;
- u32 bank = s3c_get_bank(irq);
-
- bit = s3c_eint_to_bit(irq);
- __raw_writel(bit, S5PC1XX_WKUP_INT_PEND(bank));
-}
-
-static void s3c_irq_vic_eint_maskack(unsigned int irq)
-{
- /* compiler should in-line these */
- s3c_irq_vic_eint_mask(irq);
- s3c_irq_vic_eint_ack(irq);
-}
-
-static struct irq_chip s3c_irq_vic_eint = {
- .name = "EINT",
- .mask = s3c_irq_vic_eint_mask,
- .unmask = s3c_irq_vic_eint_unmask,
- .mask_ack = s3c_irq_vic_eint_maskack,
- .ack = s3c_irq_vic_eint_ack,
- .set_type = s3c_irq_eint_set_type,
- .set_wake = s3c_irqext_wake,
-};
-
-static int __init s5pc1xx_init_irq_eint(void)
-{
- int irq;
-
- for (irq = IRQ_EINT0; irq <= IRQ_EINT15; irq++) {
- set_irq_chip(irq, &s3c_irq_vic_eint);
- set_irq_handler(irq, handle_level_irq);
- set_irq_flags(irq, IRQF_VALID);
- }
-
- for (irq = IRQ_EINT(16); irq <= IRQ_EINT(31); irq++) {
- set_irq_chip(irq, &s3c_irq_eint);
- set_irq_handler(irq, handle_level_irq);
- set_irq_flags(irq, IRQF_VALID);
- }
-
- set_irq_chained_handler(IRQ_EINT16_31, s3c_irq_demux_eint16_31);
-
- return 0;
-}
-
-arch_initcall(s5pc1xx_init_irq_eint);
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