MERGE-via-pending-tracking-hist-MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-MERGE-via-master-1228302402-1228302766-1228303138

pending-tracking-hist top was MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-MERGE-via-master-1228302402-1228302766-1228303138 / 27d86638fe294ef1d1a8f527564ec37bb20e7ef2 ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-stable-tracking-hist-MERGE-via-mokopatches-tracking-MERGE-via-master-1228302402-1228302766

stable-tracking-hist top was MERGE-via-mokopatches-tracking-MERGE-via-master-1228302402-1228302766 / 66e84c4be853030f1cea816a124cf76a741ecc08 ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-mokopatches-tracking-hist-MERGE-via-master-1228302402

mokopatches-tracking-hist top was MERGE-via-master-1228302402 / de9177f7bd127e9b6fa6213018c7c731b8ca0d0c ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-master-

master top was / 3838a80929f91d35c6d987e518bf9ea397f3e13c ... parent commitmessage:
From: Andy Green <andy@openmoko.com>
fix-wm8753-DBG.patch

Signed-off-by: Andy Green <andy@openmoko.com>

1 files changed, 160 insertions, 0 deletions

diff --git a/arch/arm/plat-s3c64xx/irq-pm.c b/arch/arm/plat-s3c64xx/irq-pm.c
new file mode 100644
index 00000000000..fd705faf335
--- /dev/null
+++ b/arch/arm/plat-s3c64xx/irq-pm.c
@@ -0,0 +1,160 @@
+/* arch/arm/plat-s3c64xx/irq-pm.c
+ *
+ * Copyright 2008 Openmoko, Inc.
+ * Copyright 2008 Simtec Electronics
+ *      Ben Dooks <ben@simtec.co.uk>
+ *      http://armlinux.simtec.co.uk/
+ *
+ * S3C64XX - Interrupt handling Power Managment
+ *
+ * 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/sysdev.h>
+#include <linux/interrupt.h>
+#include <linux/serial_core.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+
+#include <asm/hardware/vic.h>
+
+#include <mach/map.h>
+
+#include <plat/regs-serial.h>
+#include <plat/regs-timer.h>
+#include <plat/regs-gpio.h>
+#include <plat/cpu.h>
+#include <plat/pm.h>
+
+/* We handled all the IRQ types in this code, to save having to make several
+ * small files to handle each different type seperately. Having the EINT_GRP
+ * code here shouldn't be as much bloat as the IRQ table space needed when
+ * they are enabled. The added benefit is we ensure that these registers are
+ * in the same state as we suspsended.
+ */
+
+static struct sleep_save irq_save[] = {
+	SAVE_ITEM(S3C64XX_PRIORITY),
+	SAVE_ITEM(S3C64XX_EINT0CON0),
+	SAVE_ITEM(S3C64XX_EINT0CON1),
+	SAVE_ITEM(S3C64XX_EINT0FLTCON0),
+	SAVE_ITEM(S3C64XX_EINT0FLTCON1),
+	SAVE_ITEM(S3C64XX_EINT0FLTCON2),
+	SAVE_ITEM(S3C64XX_EINT0FLTCON3),
+	SAVE_ITEM(S3C64XX_EINT0MASK),
+	SAVE_ITEM(S3C64XX_TINT_CSTAT),
+};
+
+static struct irq_grp_save {
+	u32	fltcon;
+	u32	con;
+	u32	mask;
+} eint_grp_save[5];
+
+struct irq_vic_save {
+	u32	int_select;
+	u32	int_enable;
+	u32	protect;
+	u32	vect_addr[32];
+	u32	vect_cntl[32];
+};
+
+static struct irq_vic_save irq_pm_vic0_save;
+static struct irq_vic_save irq_pm_vic1_save;
+
+static u32 irq_uart_mask[CONFIG_SERIAL_SAMSUNG_UARTS];
+
+static void s3c64xx_vic_save(void __iomem *base, struct irq_vic_save *save)
+{
+	int v;
+
+	save->int_select = readl(base + VIC_INT_SELECT);
+	save->int_enable = readl(base + VIC_INT_ENABLE);
+	save->protect = readl(base + VIC_PROTECT);
+
+	for (v = 0; v < ARRAY_SIZE(save->vect_addr); v++) {
+		save->vect_addr[v] = readl(base + VIC_VECT_ADDR0 + (v * 4));
+		save->vect_cntl[v] = readl(base + VIC_VECT_CNTL0 + (v * 4));
+	}
+}
+
+static void s3c64xx_vic_restore(void __iomem *base, struct irq_vic_save *save)
+{
+	int v;
+
+	writel(save->int_select, base + VIC_INT_SELECT);
+	writel(save->protect, base + VIC_PROTECT);
+
+	/* set the enabled ints and then clear the non-enabled */
+	writel(save->int_enable, base + VIC_INT_ENABLE);
+	writel(~save->int_enable, base + VIC_INT_ENABLE_CLEAR);
+
+	for (v = 0; v < ARRAY_SIZE(save->vect_addr); v++) {
+		writel(save->vect_addr[v], base + VIC_VECT_ADDR0 + (v * 4));
+		writel(save->vect_cntl[v], base + VIC_VECT_CNTL0 + (v * 4));
+	}
+}
+
+static int s3c64xx_irq_pm_suspend(struct sys_device *dev, pm_message_t state)
+{
+	struct irq_grp_save *grp = eint_grp_save;
+	int i;
+
+	S3C_PMDBG("%s: suspending IRQs\n");
+
+	s3c64xx_vic_save(S3C_VA_VIC0, &irq_pm_vic0_save);
+	s3c64xx_vic_save(S3C_VA_VIC1, &irq_pm_vic1_save);
+
+	s3c_pm_do_save(irq_save, ARRAY_SIZE(irq_save));
+
+	for (i = 0; i < CONFIG_SERIAL_SAMSUNG_UARTS; i++)
+		irq_uart_mask[i] = __raw_readl(S3C_VA_UARTx(i) + S3C64XX_UINTM);
+
+	for (i = 0; i < ARRAY_SIZE(eint_grp_save); i++, grp++) {
+		grp->con = __raw_readl(S3C64XX_EINT12CON + (i * 4));
+		grp->mask = __raw_readl(S3C64XX_EINT12MASK + (i * 4));
+		grp->fltcon = __raw_readl(S3C64XX_EINT12FLTCON + (i * 4));
+	}
+
+	return 0;
+}
+
+static int s3c64xx_irq_pm_resume(struct sys_device *dev)
+{
+	struct irq_grp_save *grp = eint_grp_save;
+	int i;
+
+	S3C_PMDBG("%s: resuming IRQs\n");
+
+	s3c_pm_do_restore(irq_save, ARRAY_SIZE(irq_save));
+
+	s3c64xx_vic_restore(S3C_VA_VIC0, &irq_pm_vic0_save);
+	s3c64xx_vic_restore(S3C_VA_VIC1, &irq_pm_vic1_save);
+
+	for (i = 0; i < CONFIG_SERIAL_SAMSUNG_UARTS; i++)
+		__raw_writel(irq_uart_mask[i], S3C_VA_UARTx(i) + S3C64XX_UINTM);
+
+	for (i = 0; i < ARRAY_SIZE(eint_grp_save); i++, grp++) {
+		__raw_writel(grp->con, S3C64XX_EINT12CON + (i * 4));
+		__raw_writel(grp->mask, S3C64XX_EINT12MASK + (i * 4));
+		__raw_writel(grp->fltcon, S3C64XX_EINT12FLTCON + (i * 4));
+	}
+
+	return 0;
+}
+
+static struct sysdev_driver s3c64xx_irq_driver = {
+	.suspend = s3c64xx_irq_pm_suspend,
+	.resume	 = s3c64xx_irq_pm_resume,
+};
+
+static int __init s3c64xx_irq_pm_init(void)
+{
+	return sysdev_driver_register(&s3c64xx_sysclass, &s3c64xx_irq_driver);
+}
+
+arch_initcall(s3c64xx_irq_pm_init);
+