1 files changed, 102 insertions, 0 deletions
diff --git a/arch/arm/plat-samsung/s5p-irq-pm.c b/arch/arm/plat-samsung/s5p-irq-pm.c
new file mode 100644
index 0000000..7c1e3b7
--- /dev/null
+++ b/arch/arm/plat-samsung/s5p-irq-pm.c
@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com
+ *
+ * Based on arch/arm/plat-s3c24xx/irq-pm.c,
+ * Copyright (c) 2003,2004 Simtec Electronics
+ *	Ben Dooks <ben@simtec.co.uk>
+ *	http://armlinux.simtec.co.uk/
+ *
+ * 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 <plat/cpu.h>
+#include <plat/irqs.h>
+#include <plat/pm.h>
+#include <mach/map.h>
+
+#include <mach/regs-gpio.h>
+#include <mach/regs-irq.h>
+
+/* state for IRQs over sleep */
+
+/* default is to allow for EINT0..EINT31, and IRQ_RTC_TIC, IRQ_RTC_ALARM,
+ * as wakeup sources
+ *
+ * set bit to 1 in allow bitfield to enable the wakeup settings on it
+*/
+
+unsigned long s3c_irqwake_intallow	= 0x00000006L;
+unsigned long s3c_irqwake_eintallow	= 0xffffffffL;
+
+int s3c_irq_wake(struct irq_data *data, unsigned int state)
+{
+	unsigned long irqbit;
+	unsigned int irq_rtc_tic, irq_rtc_alarm;
+
+#ifdef CONFIG_ARCH_EXYNOS
+	if (soc_is_exynos5250()) {
+		irq_rtc_tic = EXYNOS5_IRQ_RTC_TIC;
+		irq_rtc_alarm = EXYNOS5_IRQ_RTC_ALARM;
+	} else {
+		irq_rtc_tic = EXYNOS4_IRQ_RTC_TIC;
+		irq_rtc_alarm = EXYNOS4_IRQ_RTC_ALARM;
+	}
+#else
+	irq_rtc_tic = IRQ_RTC_TIC;
+	irq_rtc_alarm = IRQ_RTC_ALARM;
+#endif
+
+	if (data->irq == irq_rtc_tic || data->irq == irq_rtc_alarm) {
+		irqbit = 1 << (data->irq + 1 - irq_rtc_alarm);
+
+		if (!state)
+			s3c_irqwake_intmask |= irqbit;
+		else
+			s3c_irqwake_intmask &= ~irqbit;
+	} else {
+		return -ENOENT;
+	}
+
+	return 0;
+}
+
+static struct sleep_save eint_save[] = {
+	SAVE_ITEM(S5P_EINT_CON(0)),
+	SAVE_ITEM(S5P_EINT_CON(1)),
+	SAVE_ITEM(S5P_EINT_CON(2)),
+	SAVE_ITEM(S5P_EINT_CON(3)),
+
+	SAVE_ITEM(S5P_EINT_FLTCON(0)),
+	SAVE_ITEM(S5P_EINT_FLTCON(1)),
+	SAVE_ITEM(S5P_EINT_FLTCON(2)),
+	SAVE_ITEM(S5P_EINT_FLTCON(3)),
+	SAVE_ITEM(S5P_EINT_FLTCON(4)),
+	SAVE_ITEM(S5P_EINT_FLTCON(5)),
+	SAVE_ITEM(S5P_EINT_FLTCON(6)),
+	SAVE_ITEM(S5P_EINT_FLTCON(7)),
+
+	SAVE_ITEM(S5P_EINT_MASK(0)),
+	SAVE_ITEM(S5P_EINT_MASK(1)),
+	SAVE_ITEM(S5P_EINT_MASK(2)),
+	SAVE_ITEM(S5P_EINT_MASK(3)),
+};
+
+int s3c24xx_irq_suspend(void)
+{
+	s3c_pm_do_save(eint_save, ARRAY_SIZE(eint_save));
+
+	return 0;
+}
+
+void s3c24xx_irq_resume(void)
+{
+	s3c_pm_do_restore(eint_save, ARRAY_SIZE(eint_save));
+}
+