select NO_IOPORT
select ARCH_REQUIRE_GPIOLIB
select SAMSUNG_CLKSRC
+ select SAMSUNG_IRQ_VIC_TIMER
select S3C_GPIO_TRACK
select S3C_GPIO_PULL_UPDOWN
select S3C_GPIO_CFG_S3C24XX
#include <asm/hardware/vic.h>
#include <mach/map.h>
+#include <plat/irq-vic-timer.h>
#include <plat/regs-serial.h>
-#include <plat/regs-timer.h>
#include <plat/cpu.h>
-/* Timer interrupt handling */
-
-static void s3c_irq_demux_timer(unsigned int base_irq, unsigned int sub_irq)
-{
- generic_handle_irq(sub_irq);
-}
-
-static void s3c_irq_demux_timer0(unsigned int irq, struct irq_desc *desc)
-{
- s3c_irq_demux_timer(irq, IRQ_TIMER0);
-}
-
-static void s3c_irq_demux_timer1(unsigned int irq, struct irq_desc *desc)
-{
- s3c_irq_demux_timer(irq, IRQ_TIMER1);
-}
-
-static void s3c_irq_demux_timer2(unsigned int irq, struct irq_desc *desc)
-{
- s3c_irq_demux_timer(irq, IRQ_TIMER2);
-}
-
-static void s3c_irq_demux_timer3(unsigned int irq, struct irq_desc *desc)
-{
- s3c_irq_demux_timer(irq, IRQ_TIMER3);
-}
-
-static void s3c_irq_demux_timer4(unsigned int irq, struct irq_desc *desc)
-{
- s3c_irq_demux_timer(irq, IRQ_TIMER4);
-}
-
-/* We assume the IRQ_TIMER0..IRQ_TIMER4 range is continuous. */
-
-static void s3c_irq_timer_mask(unsigned int irq)
-{
- u32 reg = __raw_readl(S3C64XX_TINT_CSTAT);
-
- reg &= 0x1f; /* mask out pending interrupts */
- reg &= ~(1 << (irq - IRQ_TIMER0));
- __raw_writel(reg, S3C64XX_TINT_CSTAT);
-}
-
-static void s3c_irq_timer_unmask(unsigned int irq)
-{
- u32 reg = __raw_readl(S3C64XX_TINT_CSTAT);
-
- reg &= 0x1f; /* mask out pending interrupts */
- reg |= 1 << (irq - IRQ_TIMER0);
- __raw_writel(reg, S3C64XX_TINT_CSTAT);
-}
-
-static void s3c_irq_timer_ack(unsigned int irq)
-{
- u32 reg = __raw_readl(S3C64XX_TINT_CSTAT);
-
- reg &= 0x1f;
- reg |= (1 << 5) << (irq - IRQ_TIMER0);
- __raw_writel(reg, S3C64XX_TINT_CSTAT);
-}
-
-static struct irq_chip s3c_irq_timer = {
- .name = "s3c-timer",
- .mask = s3c_irq_timer_mask,
- .unmask = s3c_irq_timer_unmask,
- .ack = s3c_irq_timer_ack,
-};
-
struct uart_irq {
void __iomem *regs;
unsigned int base_irq;
void __init s3c64xx_init_irq(u32 vic0_valid, u32 vic1_valid)
{
- int uart, irq;
+ int uart;
printk(KERN_DEBUG "%s: initialising interrupts\n", __func__);
/* add the timer sub-irqs */
- set_irq_chained_handler(IRQ_TIMER0_VIC, s3c_irq_demux_timer0);
- set_irq_chained_handler(IRQ_TIMER1_VIC, s3c_irq_demux_timer1);
- set_irq_chained_handler(IRQ_TIMER2_VIC, s3c_irq_demux_timer2);
- set_irq_chained_handler(IRQ_TIMER3_VIC, s3c_irq_demux_timer3);
- set_irq_chained_handler(IRQ_TIMER4_VIC, s3c_irq_demux_timer4);
-
- for (irq = IRQ_TIMER0; irq <= IRQ_TIMER4; irq++) {
- set_irq_chip(irq, &s3c_irq_timer);
- set_irq_handler(irq, handle_level_irq);
- set_irq_flags(irq, IRQF_VALID);
- }
+ s3c_init_vic_timer_irq(IRQ_TIMER0_VIC, IRQ_TIMER0);
+ s3c_init_vic_timer_irq(IRQ_TIMER1_VIC, IRQ_TIMER1);
+ s3c_init_vic_timer_irq(IRQ_TIMER2_VIC, IRQ_TIMER2);
+ s3c_init_vic_timer_irq(IRQ_TIMER3_VIC, IRQ_TIMER3);
+ s3c_init_vic_timer_irq(IRQ_TIMER4_VIC, IRQ_TIMER4);
for (uart = 0; uart < ARRAY_SIZE(uart_irqs); uart++)
s3c64xx_uart_irq(&uart_irqs[uart]);
}
-
-
Select the clock code for the clksrc implementation
used by newer systems such as the S3C64XX.
+# options for IRQ support
+
+config SAMSUNG_IRQ_VIC_TIMER
+ bool
+ help
+ Internal configuration to build the VIC timer interrupt code.
+
# options for gpio configuration support
config S3C_GPIO_CFG_S3C24XX
obj-$(CONFIG_SAMSUNG_CLKSRC) += clock-clksrc.o
+obj-$(CONFIG_SAMSUNG_IRQ_VIC_TIMER) += irq-vic-timer.o
+
# devices
obj-$(CONFIG_S3C_DEV_HSMMC) += dev-hsmmc.o
--- /dev/null
+/* arch/arm/plat-samsung/include/plat/irq-vic-timer.h
+ *
+ * Copyright (c) 2010 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * Header file for Samsung SoC IRQ VIC timer
+ *
+ * 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.
+*/
+
+extern void s3c_init_vic_timer_irq(unsigned int vic, unsigned int timer);
--- /dev/null
+/* arch/arm/plat-samsung/irq-vic-timer.c
+ * originally part of arch/arm/plat-s3c64xx/irq.c
+ *
+ * Copyright 2008 Openmoko, Inc.
+ * Copyright 2008 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ * http://armlinux.simtec.co.uk/
+ *
+ * S3C64XX - Interrupt handling
+ *
+ * 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 <mach/map.h>
+#include <plat/irq-vic-timer.h>
+#include <plat/regs-timer.h>
+
+static void s3c_irq_demux_vic_timer(unsigned int irq, struct irq_desc *desc)
+{
+ generic_handle_irq((int)desc->handler_data);
+}
+
+/* We assume the IRQ_TIMER0..IRQ_TIMER4 range is continuous. */
+
+static void s3c_irq_timer_mask(unsigned int irq)
+{
+ u32 reg = __raw_readl(S3C64XX_TINT_CSTAT);
+
+ reg &= 0x1f; /* mask out pending interrupts */
+ reg &= ~(1 << (irq - IRQ_TIMER0));
+ __raw_writel(reg, S3C64XX_TINT_CSTAT);
+}
+
+static void s3c_irq_timer_unmask(unsigned int irq)
+{
+ u32 reg = __raw_readl(S3C64XX_TINT_CSTAT);
+
+ reg &= 0x1f; /* mask out pending interrupts */
+ reg |= 1 << (irq - IRQ_TIMER0);
+ __raw_writel(reg, S3C64XX_TINT_CSTAT);
+}
+
+static void s3c_irq_timer_ack(unsigned int irq)
+{
+ u32 reg = __raw_readl(S3C64XX_TINT_CSTAT);
+
+ reg &= 0x1f;
+ reg |= (1 << 5) << (irq - IRQ_TIMER0);
+ __raw_writel(reg, S3C64XX_TINT_CSTAT);
+}
+
+static struct irq_chip s3c_irq_timer = {
+ .name = "s3c-timer",
+ .mask = s3c_irq_timer_mask,
+ .unmask = s3c_irq_timer_unmask,
+ .ack = s3c_irq_timer_ack,
+};
+
+/**
+ * s3c_init_vic_timer_irq() - initialise timer irq chanined off VIC.\
+ * @parent_irq: The parent IRQ on the VIC for the timer.
+ * @timer_irq: The IRQ to be used for the timer.
+ *
+ * Register the necessary IRQ chaining and support for the timer IRQs
+ * chained of the VIC.
+ */
+void __init s3c_init_vic_timer_irq(unsigned int parent_irq,
+ unsigned int timer_irq)
+{
+ struct irq_desc *desc = irq_to_desc(parent_irq);
+
+ set_irq_chained_handler(parent_irq, s3c_irq_demux_vic_timer);
+
+ set_irq_chip(timer_irq, &s3c_irq_timer);
+ set_irq_handler(timer_irq, handle_level_irq);
+ set_irq_flags(timer_irq, IRQF_VALID);
+
+ desc->handler_data = (void *)timer_irq;
+}
git.openpandora.org / pandora-kernel.git / commitdiff