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-rw-r--r--Documentation/arm/Samsung-S3C24XX/Suspend.txt8
-rw-r--r--arch/arm/mach-s3c2410/include/mach/gpio-nrs.h23
-rw-r--r--arch/arm/mach-s3c2410/include/mach/gpio.h3
-rw-r--r--arch/arm/mach-s3c2410/include/mach/irqs.h2
-rw-r--r--arch/arm/mach-s3c2410/include/mach/regs-gpio.h11
-rw-r--r--arch/arm/mach-s3c2410/mach-h1940.c2
-rw-r--r--arch/arm/mach-s3c2410/mach-qt2410.c2
-rw-r--r--arch/arm/mach-s3c2410/pm.c2
-rw-r--r--arch/arm/mach-s3c2412/mach-jive.c4
-rw-r--r--arch/arm/mach-s3c2412/pm.c4
-rw-r--r--arch/arm/mach-s3c2440/mach-rx3715.c2
-rw-r--r--arch/arm/mach-s3c24a0/include/mach/irqs.h2
-rw-r--r--arch/arm/mach-s3c6400/include/mach/regs-clock.h16
-rw-r--r--arch/arm/mach-s3c6400/include/mach/system.h22
-rw-r--r--arch/arm/mach-s3c6410/mach-smdk6410.c7
-rw-r--r--arch/arm/plat-s3c/Kconfig9
-rw-r--r--arch/arm/plat-s3c/Makefile6
-rw-r--r--arch/arm/plat-s3c/gpio.c11
-rw-r--r--arch/arm/plat-s3c/include/plat/cpu.h3
-rw-r--r--arch/arm/plat-s3c/include/plat/gpio-core.h30
-rw-r--r--arch/arm/plat-s3c/include/plat/pm.h (renamed from arch/arm/plat-s3c24xx/include/plat/pm.h)0
-rw-r--r--arch/arm/plat-s3c/include/plat/regs-serial.h5
-rw-r--r--arch/arm/plat-s3c/pm-check.c222
-rw-r--r--arch/arm/plat-s3c/pm-gpio.c378
-rw-r--r--arch/arm/plat-s3c/pm.c375
-rw-r--r--arch/arm/plat-s3c24xx/Makefile1
-rw-r--r--arch/arm/plat-s3c24xx/common-smdk.c2
-rw-r--r--arch/arm/plat-s3c24xx/gpiolib.c8
-rw-r--r--arch/arm/plat-s3c24xx/include/plat/irq.h6
-rw-r--r--arch/arm/plat-s3c24xx/include/plat/map.h2
-rw-r--r--arch/arm/plat-s3c24xx/include/plat/pm-core.h64
-rw-r--r--arch/arm/plat-s3c24xx/irq-pm.c95
-rw-r--r--arch/arm/plat-s3c24xx/irq.c152
-rw-r--r--arch/arm/plat-s3c24xx/pm-simtec.c2
-rw-r--r--arch/arm/plat-s3c24xx/pm.c682
-rw-r--r--arch/arm/plat-s3c24xx/s3c244x.c4
-rw-r--r--arch/arm/plat-s3c24xx/sleep.S18
-rw-r--r--arch/arm/plat-s3c64xx/Makefile6
-rw-r--r--arch/arm/plat-s3c64xx/cpu.c19
-rw-r--r--arch/arm/plat-s3c64xx/gpiolib.c10
-rw-r--r--arch/arm/plat-s3c64xx/include/plat/irqs.h1
-rw-r--r--arch/arm/plat-s3c64xx/include/plat/pm-core.h108
-rw-r--r--arch/arm/plat-s3c64xx/include/plat/regs-clock.h1
-rw-r--r--arch/arm/plat-s3c64xx/include/plat/regs-gpio.h101
-rw-r--r--arch/arm/plat-s3c64xx/include/plat/regs-sys.h4
-rw-r--r--arch/arm/plat-s3c64xx/include/plat/regs-syscon-power.h113
-rw-r--r--arch/arm/plat-s3c64xx/irq-eint.c19
-rw-r--r--arch/arm/plat-s3c64xx/irq-pm.c160
-rw-r--r--arch/arm/plat-s3c64xx/irq.c7
-rw-r--r--arch/arm/plat-s3c64xx/pm.c157
-rw-r--r--arch/arm/plat-s3c64xx/s3c6400-clock.c1
-rw-r--r--arch/arm/plat-s3c64xx/sleep.S135
-rw-r--r--drivers/misc/Makefile1
-rw-r--r--drivers/misc/smdk6410-sleeptest.c65
-rw-r--r--drivers/serial/s3c6400.c1
-rw-r--r--drivers/serial/samsung.c62
-rw-r--r--drivers/serial/samsung.h4
-rw-r--r--drivers/video/s3c-fb.c40
58 files changed, 2306 insertions, 894 deletions
diff --git a/Documentation/arm/Samsung-S3C24XX/Suspend.txt b/Documentation/arm/Samsung-S3C24XX/Suspend.txt
index 0dab6e32c13..a30fe510572 100644
--- a/Documentation/arm/Samsung-S3C24XX/Suspend.txt
+++ b/Documentation/arm/Samsung-S3C24XX/Suspend.txt
@@ -40,13 +40,13 @@ Resuming
Machine Support
---------------
- The machine specific functions must call the s3c2410_pm_init() function
+ The machine specific functions must call the s3c_pm_init() function
to say that its bootloader is capable of resuming. This can be as
simple as adding the following to the machine's definition:
- INITMACHINE(s3c2410_pm_init)
+ INITMACHINE(s3c_pm_init)
- A board can do its own setup before calling s3c2410_pm_init, if it
+ A board can do its own setup before calling s3c_pm_init, if it
needs to setup anything else for power management support.
There is currently no support for over-riding the default method of
@@ -74,7 +74,7 @@ statuc void __init machine_init(void)
enable_irq_wake(IRQ_EINT0);
- s3c2410_pm_init();
+ s3c_pm_init();
}
diff --git a/arch/arm/mach-s3c2410/include/mach/gpio-nrs.h b/arch/arm/mach-s3c2410/include/mach/gpio-nrs.h
new file mode 100644
index 00000000000..ce1ec69806a
--- /dev/null
+++ b/arch/arm/mach-s3c2410/include/mach/gpio-nrs.h
@@ -0,0 +1,23 @@
+/* arch/arm/mach-s3c2410/include/mach/gpio-nrs.h
+ *
+ * Copyright (c) 2008 Simtec Electronics
+ * http://armlinux.simtec.co.uk/
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * S3C2410 - GPIO bank numbering
+ *
+ * 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.
+*/
+
+#define S3C2410_GPIONO(bank,offset) ((bank) + (offset))
+
+#define S3C2410_GPIO_BANKA (32*0)
+#define S3C2410_GPIO_BANKB (32*1)
+#define S3C2410_GPIO_BANKC (32*2)
+#define S3C2410_GPIO_BANKD (32*3)
+#define S3C2410_GPIO_BANKE (32*4)
+#define S3C2410_GPIO_BANKF (32*5)
+#define S3C2410_GPIO_BANKG (32*6)
+#define S3C2410_GPIO_BANKH (32*7)
diff --git a/arch/arm/mach-s3c2410/include/mach/gpio.h b/arch/arm/mach-s3c2410/include/mach/gpio.h
index 7232f8ca474..aa997ba798a 100644
--- a/arch/arm/mach-s3c2410/include/mach/gpio.h
+++ b/arch/arm/mach-s3c2410/include/mach/gpio.h
@@ -23,3 +23,6 @@
/* -- cut to here when generic irq makes it */
#include <asm-generic/gpio.h>
+#include <mach/gpio-nrs.h>
+
+#define S3C_GPIO_END (S3C2410_GPIO_BANKH + 32)
diff --git a/arch/arm/mach-s3c2410/include/mach/irqs.h b/arch/arm/mach-s3c2410/include/mach/irqs.h
index ff43c229b99..4a82338c287 100644
--- a/arch/arm/mach-s3c2410/include/mach/irqs.h
+++ b/arch/arm/mach-s3c2410/include/mach/irqs.h
@@ -84,7 +84,7 @@
#define IRQ_EINT22 S3C2410_IRQ(50)
#define IRQ_EINT23 S3C2410_IRQ(51)
-
+#define IRQ_EINT_BIT(x) ((x) - (IRQ_EINT4 + 4))
#define IRQ_EINT(x) (((x) >= 4) ? (IRQ_EINT4 + (x) - 4) : (IRQ_EINT0 + (x)))
#define IRQ_LCD_FIFO S3C2410_IRQ(52)
diff --git a/arch/arm/mach-s3c2410/include/mach/regs-gpio.h b/arch/arm/mach-s3c2410/include/mach/regs-gpio.h
index 32107761306..35a03df473f 100644
--- a/arch/arm/mach-s3c2410/include/mach/regs-gpio.h
+++ b/arch/arm/mach-s3c2410/include/mach/regs-gpio.h
@@ -14,16 +14,7 @@
#ifndef __ASM_ARCH_REGS_GPIO_H
#define __ASM_ARCH_REGS_GPIO_H
-#define S3C2410_GPIONO(bank,offset) ((bank) + (offset))
-
-#define S3C2410_GPIO_BANKA (32*0)
-#define S3C2410_GPIO_BANKB (32*1)
-#define S3C2410_GPIO_BANKC (32*2)
-#define S3C2410_GPIO_BANKD (32*3)
-#define S3C2410_GPIO_BANKE (32*4)
-#define S3C2410_GPIO_BANKF (32*5)
-#define S3C2410_GPIO_BANKG (32*6)
-#define S3C2410_GPIO_BANKH (32*7)
+#include <mach/gpio-nrs.h>
#ifdef CONFIG_CPU_S3C2400
#define S3C24XX_GPIO_BASE(x) S3C2400_GPIO_BASE(x)
diff --git a/arch/arm/mach-s3c2410/mach-h1940.c b/arch/arm/mach-s3c2410/mach-h1940.c
index a38327ded86..e4ff37191b2 100644
--- a/arch/arm/mach-s3c2410/mach-h1940.c
+++ b/arch/arm/mach-s3c2410/mach-h1940.c
@@ -209,7 +209,7 @@ static void __init h1940_map_io(void)
#ifdef CONFIG_PM_H1940
memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 1024);
#endif
- s3c2410_pm_init();
+ s3c_pm_init();
}
static void __init h1940_init_irq(void)
diff --git a/arch/arm/mach-s3c2410/mach-qt2410.c b/arch/arm/mach-s3c2410/mach-qt2410.c
index 749dcd7a868..db0d8675f1d 100644
--- a/arch/arm/mach-s3c2410/mach-qt2410.c
+++ b/arch/arm/mach-s3c2410/mach-qt2410.c
@@ -373,7 +373,7 @@ static void __init qt2410_machine_init(void)
s3c2410_gpio_cfgpin(S3C2410_GPB5, S3C2410_GPIO_OUTPUT);
platform_add_devices(qt2410_devices, ARRAY_SIZE(qt2410_devices));
- s3c2410_pm_init();
+ s3c_pm_init();
}
MACHINE_START(QT2410, "QT2410")
diff --git a/arch/arm/mach-s3c2410/pm.c b/arch/arm/mach-s3c2410/pm.c
index a6970f61319..24fb0a19001 100644
--- a/arch/arm/mach-s3c2410/pm.c
+++ b/arch/arm/mach-s3c2410/pm.c
@@ -48,7 +48,7 @@ static void s3c2410_pm_prepare(void)
{
/* ensure at least GSTATUS3 has the resume address */
- __raw_writel(virt_to_phys(s3c2410_cpu_resume), S3C2410_GSTATUS3);
+ __raw_writel(virt_to_phys(s3c_cpu_resume), S3C2410_GSTATUS3);
DBG("GSTATUS3 0x%08x\n", __raw_readl(S3C2410_GSTATUS3));
DBG("GSTATUS4 0x%08x\n", __raw_readl(S3C2410_GSTATUS4));
diff --git a/arch/arm/mach-s3c2412/mach-jive.c b/arch/arm/mach-s3c2412/mach-jive.c
index e08a0f06224..1172708d015 100644
--- a/arch/arm/mach-s3c2412/mach-jive.c
+++ b/arch/arm/mach-s3c2412/mach-jive.c
@@ -493,7 +493,7 @@ static int jive_pm_suspend(struct sys_device *sd, pm_message_t state)
* correct address to resume from. */
__raw_writel(0x2BED, S3C2412_INFORM0);
- __raw_writel(virt_to_phys(s3c2410_cpu_resume), S3C2412_INFORM1);
+ __raw_writel(virt_to_phys(s3c_cpu_resume), S3C2412_INFORM1);
return 0;
}
@@ -629,7 +629,7 @@ static void __init jive_machine_init(void)
/* initialise the power management now we've setup everything. */
- s3c2410_pm_init();
+ s3c_pm_init();
s3c_device_nand.dev.platform_data = &jive_nand_info;
diff --git a/arch/arm/mach-s3c2412/pm.c b/arch/arm/mach-s3c2412/pm.c
index 217e9e4ed45..c9cfe40e21f 100644
--- a/arch/arm/mach-s3c2412/pm.c
+++ b/arch/arm/mach-s3c2412/pm.c
@@ -85,7 +85,7 @@ static struct sleep_save s3c2412_sleep[] = {
static int s3c2412_pm_suspend(struct sys_device *dev, pm_message_t state)
{
- s3c2410_pm_do_save(s3c2412_sleep, ARRAY_SIZE(s3c2412_sleep));
+ s3c_pm_do_save(s3c2412_sleep, ARRAY_SIZE(s3c2412_sleep));
return 0;
}
@@ -98,7 +98,7 @@ static int s3c2412_pm_resume(struct sys_device *dev)
tmp |= S3C2412_PWRCFG_STANDBYWFI_IDLE;
__raw_writel(tmp, S3C2412_PWRCFG);
- s3c2410_pm_do_restore(s3c2412_sleep, ARRAY_SIZE(s3c2412_sleep));
+ s3c_pm_do_restore(s3c2412_sleep, ARRAY_SIZE(s3c2412_sleep));
return 0;
}
diff --git a/arch/arm/mach-s3c2440/mach-rx3715.c b/arch/arm/mach-s3c2440/mach-rx3715.c
index 12d378f84ad..bc8d8d1ebd1 100644
--- a/arch/arm/mach-s3c2440/mach-rx3715.c
+++ b/arch/arm/mach-s3c2440/mach-rx3715.c
@@ -203,7 +203,7 @@ static void __init rx3715_init_machine(void)
#ifdef CONFIG_PM_H1940
memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 1024);
#endif
- s3c2410_pm_init();
+ s3c_pm_init();
s3c24xx_fb_set_platdata(&rx3715_fb_info);
platform_add_devices(rx3715_devices, ARRAY_SIZE(rx3715_devices));
diff --git a/arch/arm/mach-s3c24a0/include/mach/irqs.h b/arch/arm/mach-s3c24a0/include/mach/irqs.h
index ae8c0e35978..83ce2a7a9da 100644
--- a/arch/arm/mach-s3c24a0/include/mach/irqs.h
+++ b/arch/arm/mach-s3c24a0/include/mach/irqs.h
@@ -70,6 +70,8 @@
#define IRQ_EINT17 S3C2410_IRQ(49)
#define IRQ_EINT18 S3C2410_IRQ(50)
+#define IRQ_EINT_BIT(x) ((x) - IRQ_EINT00)
+
/* SUB IRQS */
#define IRQ_S3CUART_RX0 S3C2410_IRQ(51) /* 67 */
#define IRQ_S3CUART_TX0 S3C2410_IRQ(52)
diff --git a/arch/arm/mach-s3c6400/include/mach/regs-clock.h b/arch/arm/mach-s3c6400/include/mach/regs-clock.h
new file mode 100644
index 00000000000..a6c7f4eb3a1
--- /dev/null
+++ b/arch/arm/mach-s3c6400/include/mach/regs-clock.h
@@ -0,0 +1,16 @@
+/* linux/arch/arm/mach-s3c6400/include/mach/regs-clock.h
+ *
+ * Copyright 2008 Openmoko, Inc.
+ * Copyright 2008 Simtec Electronics
+ * http://armlinux.simtec.co.uk/
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * S3C64XX - clock register compatibility with s3c24xx
+ *
+ * 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 <plat/regs-clock.h>
+
diff --git a/arch/arm/mach-s3c6400/include/mach/system.h b/arch/arm/mach-s3c6400/include/mach/system.h
index 652bbc403f0..3165f509780 100644
--- a/arch/arm/mach-s3c6400/include/mach/system.h
+++ b/arch/arm/mach-s3c6400/include/mach/system.h
@@ -11,9 +11,29 @@
#ifndef __ASM_ARCH_SYSTEM_H
#define __ASM_ARCH_SYSTEM_H __FILE__
+#include <linux/io.h>
+#include <mach/map.h>
+
+#include <plat/regs-sys.h>
+#include <plat/regs-syscon-power.h>
+
static void arch_idle(void)
{
- /* nothing here yet */
+ unsigned long flags;
+ u32 mode;
+
+ /* ensure that if we execute the cpu idle sequence that we
+ * go into idle mode instead of powering off. */
+
+ local_irq_save(flags);
+ mode = __raw_readl(S3C64XX_PWR_CFG);
+ mode &= ~S3C64XX_PWRCFG_CFG_WFI_MASK;
+ mode |= S3C64XX_PWRCFG_CFG_WFI_IDLE;
+ __raw_writel(mode, S3C64XX_PWR_CFG);
+
+ local_irq_restore(flags);
+
+ cpu_do_idle();
}
static void arch_reset(char mode)
diff --git a/arch/arm/mach-s3c6410/mach-smdk6410.c b/arch/arm/mach-s3c6410/mach-smdk6410.c
index 3c4d47145c8..a3d3b3187de 100644
--- a/arch/arm/mach-s3c6410/mach-smdk6410.c
+++ b/arch/arm/mach-s3c6410/mach-smdk6410.c
@@ -39,8 +39,10 @@
#include <asm/mach-types.h>
#include <plat/regs-serial.h>
+#include <plat/regs-gpio.h>
#include <plat/iic.h>
#include <plat/fb.h>
+#include <plat/pm.h>
#include <plat/s3c6410.h>
#include <plat/clock.h>
@@ -158,10 +160,15 @@ static void __init smdk6410_map_io(void)
s3c64xx_init_io(smdk6410_iodesc, ARRAY_SIZE(smdk6410_iodesc));
s3c24xx_init_clocks(12000000);
s3c24xx_init_uarts(smdk6410_uartcfgs, ARRAY_SIZE(smdk6410_uartcfgs));
+
+ /* do not change gpio settings over sleep to xxxSLPCON */
+ __raw_writel(S3C64XX_SLPEN_CFG_BYSLPEN, S3C64XX_SLPEN);
}
static void __init smdk6410_machine_init(void)
{
+ s3c_pm_init();
+
s3c_i2c0_set_platdata(NULL);
s3c_i2c1_set_platdata(NULL);
s3c_fb_set_platdata(&smdk6410_lcd_pdata);
diff --git a/arch/arm/plat-s3c/Kconfig b/arch/arm/plat-s3c/Kconfig
index def0bb457ca..d47091d5c68 100644
--- a/arch/arm/plat-s3c/Kconfig
+++ b/arch/arm/plat-s3c/Kconfig
@@ -75,6 +75,15 @@ config S3C2410_PM_DEBUG
Resume code. See <file:Documentation/arm/Samsung-S3C24XX/Suspend.txt>
for more information.
+config S3C_PM_DEBUG_LED_SMDK
+ bool "SMDK LED suspend/resume debugging"
+ depends on PM && (MACH_SMDK6410)
+ help
+ Say Y here to enable the use of the SMDK LEDs on the baseboard
+ for debugging of the state of the suspend and resume process.
+
+ Note, this currently only works for S3C64XX based SMDK boards.
+
config S3C2410_PM_CHECK
bool "S3C2410 PM Suspend Memory CRC"
depends on PLAT_S3C && PM && CRC32
diff --git a/arch/arm/plat-s3c/Makefile b/arch/arm/plat-s3c/Makefile
index 39195f972d5..c77fcae5529 100644
--- a/arch/arm/plat-s3c/Makefile
+++ b/arch/arm/plat-s3c/Makefile
@@ -18,6 +18,12 @@ obj-y += pwm-clock.o
obj-y += gpio.o
obj-y += gpio-config.o
+# PM support
+
+obj-$(CONFIG_PM) += pm.o
+obj-$(CONFIG_PM) += pm-gpio.o
+obj-$(CONFIG_S3C2410_PM_CHECK) += pm-check.o
+
# devices
obj-$(CONFIG_S3C_DEV_HSMMC) += dev-hsmmc.o
diff --git a/arch/arm/plat-s3c/gpio.c b/arch/arm/plat-s3c/gpio.c
index d71dd6d9ce5..260fdc6ad68 100644
--- a/arch/arm/plat-s3c/gpio.c
+++ b/arch/arm/plat-s3c/gpio.c
@@ -16,7 +16,7 @@
#include <linux/io.h>
#include <linux/gpio.h>
-#include <plat/gpio-core.h>
+#include <mach/gpio-core.h>
#ifdef CONFIG_S3C_GPIO_TRACK
struct s3c_gpio_chip *s3c_gpios[S3C_GPIO_END];
@@ -140,6 +140,15 @@ __init void s3c_gpiolib_add(struct s3c_gpio_chip *chip)
if (!gc->get)
gc->get = s3c_gpiolib_get;
+#ifdef CONFIG_PM
+ if (chip->pm != NULL) {
+ if (!chip->pm->save || !chip->pm->resume)
+ printk(KERN_ERR "gpio: %s has missing PM functions\n",
+ gc->label);
+ } else
+ printk(KERN_ERR "gpio: %s has no PM function\n", gc->label);
+#endif
+
/* gpiochip_add() prints own failure message on error. */
ret = gpiochip_add(gc);
if (ret >= 0)
diff --git a/arch/arm/plat-s3c/include/plat/cpu.h b/arch/arm/plat-s3c/include/plat/cpu.h
index e62ae0fcfe5..be541cbba07 100644
--- a/arch/arm/plat-s3c/include/plat/cpu.h
+++ b/arch/arm/plat-s3c/include/plat/cpu.h
@@ -69,3 +69,6 @@ extern struct sysdev_class s3c2412_sysclass;
extern struct sysdev_class s3c2440_sysclass;
extern struct sysdev_class s3c2442_sysclass;
extern struct sysdev_class s3c2443_sysclass;
+extern struct sysdev_class s3c6410_sysclass;
+extern struct sysdev_class s3c64xx_sysclass;
+
diff --git a/arch/arm/plat-s3c/include/plat/gpio-core.h b/arch/arm/plat-s3c/include/plat/gpio-core.h
index 2fc60a580ac..32af612767a 100644
--- a/arch/arm/plat-s3c/include/plat/gpio-core.h
+++ b/arch/arm/plat-s3c/include/plat/gpio-core.h
@@ -20,6 +20,18 @@
* specific code.
*/
+struct s3c_gpio_chip;
+
+/**
+ * struct s3c_gpio_pm - power management (suspend/resume) information
+ * @save: Routine to save the state of the GPIO block
+ * @resume: Routine to resume the GPIO block.
+ */
+struct s3c_gpio_pm {
+ void (*save)(struct s3c_gpio_chip *chip);
+ void (*resume)(struct s3c_gpio_chip *chip);
+};
+
struct s3c_gpio_cfg;
/**
@@ -27,6 +39,7 @@ struct s3c_gpio_cfg;
* @chip: The chip structure to be exported via gpiolib.
* @base: The base pointer to the gpio configuration registers.
* @config: special function and pull-resistor control information.
+ * @pm_save: Save information for suspend/resume support.
*
* This wrapper provides the necessary information for the Samsung
* specific gpios being registered with gpiolib.
@@ -34,7 +47,11 @@ struct s3c_gpio_cfg;
struct s3c_gpio_chip {
struct gpio_chip chip;
struct s3c_gpio_cfg *config;
+ struct s3c_gpio_pm *pm;
void __iomem *base;
+#ifdef CONFIG_PM
+ u32 pm_save[4];
+#endif
};
static inline struct s3c_gpio_chip *to_s3c_gpio(struct gpio_chip *gpc)
@@ -75,3 +92,16 @@ static inline struct s3c_gpio_chip *s3c_gpiolib_getchip(unsigned int chip)
static inline void s3c_gpiolib_track(struct s3c_gpio_chip *chip) { }
#endif
+
+#ifdef CONFIG_PM
+extern struct s3c_gpio_pm s3c_gpio_pm_1bit;
+extern struct s3c_gpio_pm s3c_gpio_pm_2bit;
+extern struct s3c_gpio_pm s3c_gpio_pm_4bit;
+#define __gpio_pm(x) x
+#else
+#define s3c_gpio_pm_1bit NULL
+#define s3c_gpio_pm_2bit NULL
+#define s3c_gpio_pm_4bit NULL
+#define __gpio_pm(x) NULL
+
+#endif /* CONFIG_PM */
diff --git a/arch/arm/plat-s3c24xx/include/plat/pm.h b/arch/arm/plat-s3c/include/plat/pm.h
index c384d02d4cf..c384d02d4cf 100644
--- a/arch/arm/plat-s3c24xx/include/plat/pm.h
+++ b/arch/arm/plat-s3c/include/plat/pm.h
diff --git a/arch/arm/plat-s3c/include/plat/regs-serial.h b/arch/arm/plat-s3c/include/plat/regs-serial.h
index 487d7d2a7e1..66af75a5cdd 100644
--- a/arch/arm/plat-s3c/include/plat/regs-serial.h
+++ b/arch/arm/plat-s3c/include/plat/regs-serial.h
@@ -189,6 +189,11 @@
#define S3C2443_DIVSLOT (0x2C)
+/* S3C64XX interrupt registers. */
+#define S3C64XX_UINTP 0x30
+#define S3C64XX_UINTSP 0x34
+#define S3C64XX_UINTM 0x38
+
#ifndef __ASSEMBLY__
/* struct s3c24xx_uart_clksrc
diff --git a/arch/arm/plat-s3c/pm-check.c b/arch/arm/plat-s3c/pm-check.c
new file mode 100644
index 00000000000..7f21bef09c3
--- /dev/null
+++ b/arch/arm/plat-s3c/pm-check.c
@@ -0,0 +1,222 @@
+/* linux/arch/arm/plat-s3c/pm-check.c
+ * originally in linux/arch/arm/plat-s3c24xx/pm.c
+ *
+ * Copyright (c) 2004,2006,2008 Simtec Electronics
+ * http://armlinux.simtec.co.uk
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * S3C Power Mangament - suspend/resume memory corruptiuon check.
+ *
+ * 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/suspend.h>
+#include <linux/init.h>
+#include <linux/crc32.h>
+#include <linux/ioport.h>
+
+#include <plat/pm.h>
+
+#if CONFIG_S3C2410_PM_CHECK_CHUNKSIZE < 1
+#error CONFIG_S3C2410_PM_CHECK_CHUNKSIZE must be a positive non-zero value
+#endif
+
+/* suspend checking code...
+ *
+ * this next area does a set of crc checks over all the installed
+ * memory, so the system can verify if the resume was ok.
+ *
+ * CONFIG_S3C2410_PM_CHECK_CHUNKSIZE defines the block-size for the CRC,
+ * increasing it will mean that the area corrupted will be less easy to spot,
+ * and reducing the size will cause the CRC save area to grow
+*/
+
+#define CHECK_CHUNKSIZE (CONFIG_S3C2410_PM_CHECK_CHUNKSIZE * 1024)
+
+static u32 crc_size; /* size needed for the crc block */
+static u32 *crcs; /* allocated over suspend/resume */
+
+typedef u32 *(run_fn_t)(struct resource *ptr, u32 *arg);
+
+/* s3c_pm_run_res
+ *
+ * go thorugh the given resource list, and look for system ram
+*/
+
+static void s3c_pm_run_res(struct resource *ptr, run_fn_t fn, u32 *arg)
+{
+ while (ptr != NULL) {
+ if (ptr->child != NULL)
+ s3c_pm_run_res(ptr->child, fn, arg);
+
+ if ((ptr->flags & IORESOURCE_MEM) &&
+ strcmp(ptr->name, "System RAM") == 0) {
+ S3C_PMDBG("Found system RAM at %08lx..%08lx\n",
+ (unsigned long)ptr->start,
+ (unsigned long)ptr->end);
+ arg = (fn)(ptr, arg);
+ }
+
+ ptr = ptr->sibling;
+ }
+}
+
+static void s3c_pm_run_sysram(run_fn_t fn, u32 *arg)
+{
+ s3c_pm_run_res(&iomem_resource, fn, arg);
+}
+
+static u32 *s3c_pm_countram(struct resource *res, u32 *val)
+{
+ u32 size = (u32)(res->end - res->start)+1;
+
+ size += CHECK_CHUNKSIZE-1;
+ size /= CHECK_CHUNKSIZE;
+
+ S3C_PMDBG("Area %08lx..%08lx, %d blocks\n",
+ (unsigned long)res->start, (unsigned long)res->end, size);
+
+ *val += size * sizeof(u32);
+ return val;
+}
+
+/* s3c_pm_prepare_check
+ *
+ * prepare the necessary information for creating the CRCs. This
+ * must be done before the final save, as it will require memory
+ * allocating, and thus touching bits of the kernel we do not
+ * know about.
+*/
+
+void s3c_pm_check_prepare(void)
+{
+ crc_size = 0;
+
+ s3c_pm_run_sysram(s3c_pm_countram, &crc_size);
+
+ S3C_PMDBG("s3c_pm_prepare_check: %u checks needed\n", crc_size);
+
+ crcs = kmalloc(crc_size+4, GFP_KERNEL);
+ if (crcs == NULL)
+ printk(KERN_ERR "Cannot allocated CRC save area\n");
+}
+
+static u32 *s3c_pm_makecheck(struct resource *res, u32 *val)
+{
+ unsigned long addr, left;
+
+ for (addr = res->start; addr < res->end;
+ addr += CHECK_CHUNKSIZE) {
+ left = res->end - addr;
+
+ if (left > CHECK_CHUNKSIZE)
+ left = CHECK_CHUNKSIZE;
+
+ *val = crc32_le(~0, phys_to_virt(addr), left);
+ val++;
+ }
+
+ return val;
+}
+
+/* s3c_pm_check_store
+ *
+ * compute the CRC values for the memory blocks before the final
+ * sleep.
+*/
+
+void s3c_pm_check_store(void)
+{
+ if (crcs != NULL)
+ s3c_pm_run_sysram(s3c_pm_makecheck, crcs);
+}
+
+/* in_region
+ *
+ * return TRUE if the area defined by ptr..ptr+size contatins the
+ * what..what+whatsz
+*/
+
+static inline int in_region(void *ptr, int size, void *what, size_t whatsz)
+{
+ if ((what+whatsz) < ptr)
+ return 0;
+
+ if (what > (ptr+size))
+ return 0;
+
+ return 1;
+}
+
+/**
+ * s3c_pm_runcheck*() - helper to check a resource on restore.
+ * @res: The resource to check
+ * @vak: Pointer to list of CRC32 values to check.
+ *
+ * Called from the s3c_pm_check_restore() via s3c_pm_run_sysram(), this
+ * function runs the given memory resource checking it against the stored
+ * CRC to ensure that memory is restored. The function tries to skip as
+ * many of the areas used during the suspend process.
+ */
+static u32 *s3c_pm_runcheck(struct resource *res, u32 *val)
+{
+ void *save_at = phys_to_virt(s3c_sleep_save_phys);
+ unsigned long addr;
+ unsigned long left;
+ void *ptr;
+ u32 calc;
+
+ for (addr = res->start; addr < res->end;
+ addr += CHECK_CHUNKSIZE) {
+ left = res->end - addr;
+
+ if (left > CHECK_CHUNKSIZE)
+ left = CHECK_CHUNKSIZE;
+
+ ptr = phys_to_virt(addr);
+
+ if (in_region(ptr, left, crcs, crc_size)) {
+ S3C_PMDBG("skipping %08lx, has crc block in\n", addr);
+ goto skip_check;
+ }
+
+ if (in_region(ptr, left, save_at, 32*4 )) {
+ S3C_PMDBG("skipping %08lx, has save block in\n", addr);
+ goto skip_check;
+ }
+
+ /* calculate and check the checksum */
+
+ calc = crc32_le(~0, ptr, left);
+ if (calc != *val) {
+ printk(KERN_ERR "Restore CRC error at "
+ "%08lx (%08x vs %08x)\n", addr, calc, *val);
+
+ S3C_PMDBG("Restore CRC error at %08lx (%08x vs %08x)\n",
+ addr, calc, *val);
+ }
+
+ skip_check:
+ val++;
+ }
+
+ return val;
+}
+
+/**
+ * s3c_pm_check_restore() - memory check called on resume
+ *
+ * check the CRCs after the restore event and free the memory used
+ * to hold them
+*/
+void s3c_pm_check_restore(void)
+{
+ if (crcs != NULL) {
+ s3c_pm_run_sysram(s3c_pm_runcheck, crcs);
+ kfree(crcs);
+ crcs = NULL;
+ }
+}
diff --git a/arch/arm/plat-s3c/pm-gpio.c b/arch/arm/plat-s3c/pm-gpio.c
new file mode 100644
index 00000000000..6b5d6ec1dd7
--- /dev/null
+++ b/arch/arm/plat-s3c/pm-gpio.c
@@ -0,0 +1,378 @@
+/* linux/arch/arm/plat-s3c/pm-gpio.c
+ *
+ * Copyright 2008 Openmoko, Inc.
+ * Copyright 2008 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ * http://armlinux.simtec.co.uk/
+ *
+ * S3C series GPIO PM code
+ *
+ * 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/init.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+
+#include <mach/gpio-core.h>
+#include <plat/pm.h>
+
+/* PM GPIO helpers */
+
+#define OFFS_CON (0x00)
+#define OFFS_DAT (0X04)
+#define OFFS_UP (0X08)
+
+static void s3c_gpio_pm_1bit_save(struct s3c_gpio_chip *chip)
+{
+ chip->pm_save[0] = __raw_readl(chip->base + OFFS_CON);
+ chip->pm_save[1] = __raw_readl(chip->base + OFFS_DAT);
+}
+
+static void s3c_gpio_pm_1bit_resume(struct s3c_gpio_chip *chip)
+{
+ void __iomem *base = chip->base;
+ u32 old_gpcon = __raw_readl(base + OFFS_CON);
+ u32 old_gpdat = __raw_readl(base + OFFS_DAT);
+ u32 gps_gpcon = chip->pm_save[0];
+ u32 gps_gpdat = chip->pm_save[1];
+ u32 gpcon;
+
+ /* GPACON only has one bit per control / data and no PULLUPs.
+ * GPACON[x] = 0 => Output, 1 => SFN */
+
+ /* first set all SFN bits to SFN */
+
+ gpcon = old_gpcon | gps_gpcon;
+ __raw_writel(gpcon, base + OFFS_CON);
+
+ /* now set all the other bits */
+
+ __raw_writel(gps_gpdat, base + OFFS_DAT);
+ __raw_writel(gps_gpcon, base + OFFS_CON);
+
+ S3C_PMDBG("%s: CON %08x => %08x, DAT %08x => %08x\n",
+ chip->chip.label, old_gpcon, gps_gpcon, old_gpdat, gps_gpdat);
+}
+
+struct s3c_gpio_pm s3c_gpio_pm_1bit = {
+ .save = s3c_gpio_pm_1bit_save,
+ .resume = s3c_gpio_pm_1bit_resume,
+};
+
+static void s3c_gpio_pm_2bit_save(struct s3c_gpio_chip *chip)
+{
+ chip->pm_save[0] = __raw_readl(chip->base + OFFS_CON);
+ chip->pm_save[1] = __raw_readl(chip->base + OFFS_DAT);
+ chip->pm_save[2] = __raw_readl(chip->base + OFFS_UP);
+}
+
+/* Test whether the given masked+shifted bits of an GPIO configuration
+ * are one of the SFN (special function) modes. */
+
+static inline int is_sfn(unsigned long con)
+{
+ return con >= 2;
+}
+
+/* Test if the given masked+shifted GPIO configuration is an input */
+
+static inline int is_in(unsigned long con)
+{
+ return con == 0;
+}
+
+/* Test if the given masked+shifted GPIO configuration is an output */
+
+static inline int is_out(unsigned long con)
+{
+ return con == 1;
+}
+
+/**
+ * s3c_gpio_pm_2bit_resume() - restore the given GPIO bank
+ * @chip: The chip information to resume.
+ *
+ * Restore one of the GPIO banks that was saved during suspend. This is
+ * not as simple as once thought, due to the possibility of glitches
+ * from the order that the CON and DAT registers are set in.
+ *
+ * The three states the pin can be are {IN,OUT,SFN} which gives us 9
+ * combinations of changes to check. Three of these, if the pin stays
+ * in the same configuration can be discounted. This leaves us with
+ * the following:
+ *
+ * { IN => OUT } Change DAT first
+ * { IN => SFN } Change CON first
+ * { OUT => SFN } Change CON first, so new data will not glitch
+ * { OUT => IN } Change CON first, so new data will not glitch
+ * { SFN => IN } Change CON first
+ * { SFN => OUT } Change DAT first, so new data will not glitch [1]
+ *
+ * We do not currently deal with the UP registers as these control
+ * weak resistors, so a small delay in change should not need to bring
+ * these into the calculations.
+ *
+ * [1] this assumes that writing to a pin DAT whilst in SFN will set the
+ * state for when it is next output.
+ */
+static void s3c_gpio_pm_2bit_resume(struct s3c_gpio_chip *chip)
+{
+ void __iomem *base = chip->base;
+ u32 old_gpcon = __raw_readl(base + OFFS_CON);
+ u32 old_gpdat = __raw_readl(base + OFFS_DAT);
+ u32 gps_gpcon = chip->pm_save[0];
+ u32 gps_gpdat = chip->pm_save[1];
+ u32 gpcon, old, new, mask;
+ u32 change_mask = 0x0;
+ int nr;
+
+ /* restore GPIO pull-up settings */
+ __raw_writel(chip->pm_save[2], base + OFFS_UP);
+
+ /* Create a change_mask of all the items that need to have
+ * their CON value changed before their DAT value, so that
+ * we minimise the work between the two settings.
+ */
+
+ for (nr = 0, mask = 0x03; nr < 32; nr += 2, mask <<= 2) {
+ old = (old_gpcon & mask) >> nr;
+ new = (gps_gpcon & mask) >> nr;
+
+ /* If there is no change, then skip */
+
+ if (old == new)
+ continue;
+
+ /* If both are special function, then skip */
+
+ if (is_sfn(old) && is_sfn(new))
+ continue;
+
+ /* Change is IN => OUT, do not change now */
+
+ if (is_in(old) && is_out(new))
+ continue;
+
+ /* Change is SFN => OUT, do not change now */
+
+ if (is_sfn(old) && is_out(new))
+ continue;
+
+ /* We should now be at the case of IN=>SFN,
+ * OUT=>SFN, OUT=>IN, SFN=>IN. */
+
+ change_mask |= mask;
+ }
+
+
+ /* Write the new CON settings */
+
+ gpcon = old_gpcon & ~change_mask;
+ gpcon |= gps_gpcon & change_mask;
+
+ __raw_writel(gpcon, base + OFFS_CON);
+
+ /* Now change any items that require DAT,CON */
+
+ __raw_writel(gps_gpdat, base + OFFS_DAT);
+ __raw_writel(gps_gpcon, base + OFFS_CON);
+
+ S3C_PMDBG("%s: CON %08x => %08x, DAT %08x => %08x\n",
+ chip->chip.label, old_gpcon, gps_gpcon, old_gpdat, gps_gpdat);
+}
+
+struct s3c_gpio_pm s3c_gpio_pm_2bit = {
+ .save = s3c_gpio_pm_2bit_save,
+ .resume = s3c_gpio_pm_2bit_resume,
+};
+
+#ifdef CONFIG_ARCH_S3C64XX
+static void s3c_gpio_pm_4bit_save(struct s3c_gpio_chip *chip)
+{
+ chip->pm_save[1] = __raw_readl(chip->base + OFFS_CON);
+ chip->pm_save[2] = __raw_readl(chip->base + OFFS_DAT);
+ chip->pm_save[3] = __raw_readl(chip->base + OFFS_UP);
+
+ if (chip->chip.ngpio > 8)
+ chip->pm_save[0] = __raw_readl(chip->base - 4);
+}
+
+static u32 s3c_gpio_pm_4bit_mask(u32 old_gpcon, u32 gps_gpcon)
+{
+ u32 old, new, mask;
+ u32 change_mask = 0x0;
+ int nr;
+
+ for (nr = 0, mask = 0x0f; nr < 16; nr += 4, mask <<= 4) {
+ old = (old_gpcon & mask) >> nr;
+ new = (gps_gpcon & mask) >> nr;
+
+ /* If there is no change, then skip */
+
+ if (old == new)
+ continue;
+
+ /* If both are special function, then skip */
+
+ if (is_sfn(old) && is_sfn(new))
+ continue;
+
+ /* Change is IN => OUT, do not change now */
+
+ if (is_in(old) && is_out(new))
+ continue;
+
+ /* Change is SFN => OUT, do not change now */
+
+ if (is_sfn(old) && is_out(new))
+ continue;
+
+ /* We should now be at the case of IN=>SFN,
+ * OUT=>SFN, OUT=>IN, SFN=>IN. */
+
+ change_mask |= mask;
+ }
+
+ return change_mask;
+}
+
+static void s3c_gpio_pm_4bit_con(struct s3c_gpio_chip *chip, int index)
+{
+ void __iomem *con = chip->base + (index * 4);
+ u32 old_gpcon = __raw_readl(con);
+ u32 gps_gpcon = chip->pm_save[index + 1];
+ u32 gpcon, mask;
+
+ mask = s3c_gpio_pm_4bit_mask(old_gpcon, gps_gpcon);
+
+ gpcon = old_gpcon & ~mask;
+ gpcon |= gps_gpcon & mask;
+
+ __raw_writel(gpcon, con);
+}
+
+static void s3c_gpio_pm_4bit_resume(struct s3c_gpio_chip *chip)
+{
+ void __iomem *base = chip->base;
+ u32 old_gpcon[2];
+ u32 old_gpdat = __raw_readl(base + OFFS_DAT);
+ u32 gps_gpdat = chip->pm_save[1];
+
+ /* First, modify the CON settings */
+
+ old_gpcon[0] = 0;
+ old_gpcon[1] = __raw_readl(base + OFFS_CON);
+
+ s3c_gpio_pm_4bit_con(chip, 0);
+ if (chip->chip.ngpio > 8) {
+ old_gpcon[0] = __raw_readl(base - 4);
+ s3c_gpio_pm_4bit_con(chip, -1);
+ }
+
+ /* Now change the configurations that require DAT,CON */
+
+ __raw_writel(chip->pm_save[2], base + OFFS_DAT);
+ __raw_writel(chip->pm_save[1], base + OFFS_CON);
+ if (chip->chip.ngpio > 8)
+ __raw_writel(chip->pm_save[0], base - 4);
+
+ __raw_writel(chip->pm_save[2], base + OFFS_DAT);
+ __raw_writel(chip->pm_save[3], base + OFFS_UP);
+
+ if (chip->chip.ngpio > 8) {
+ S3C_PMDBG("%s: CON4 %08x => %08x, DAT %08x => %08x\n",
+ chip->chip.label, old_gpcon[0], old_gpcon[1],
+ __raw_readl(base - 4),
+ __raw_readl(base + OFFS_CON),
+ old_gpdat, gps_gpdat);
+ } else
+ S3C_PMDBG("%s: CON4 %08x => %08x, DAT %08x => %08x\n",
+ chip->chip.label, old_gpcon[1],
+ __raw_readl(base + OFFS_CON),
+ old_gpdat, gps_gpdat);
+}
+
+struct s3c_gpio_pm s3c_gpio_pm_4bit = {
+ .save = s3c_gpio_pm_4bit_save,
+ .resume = s3c_gpio_pm_4bit_resume,
+};
+#endif /* CONFIG_ARCH_S3C64XX */
+
+/**
+ * s3c_pm_save_gpio() - save gpio chip data for suspend
+ * @ourchip: The chip for suspend.
+ */
+static void s3c_pm_save_gpio(struct s3c_gpio_chip *ourchip)
+{
+ struct s3c_gpio_pm *pm = ourchip->pm;
+
+ if (pm == NULL || pm->save == NULL)
+ S3C_PMDBG("%s: no pm for %s\n", __func__, ourchip->chip.label);
+ else
+ pm->save(ourchip);
+}
+
+/**
+ * s3c_pm_save_gpios() - Save the state of the GPIO banks.
+ *
+ * For all the GPIO banks, save the state of each one ready for going
+ * into a suspend mode.
+ */
+void s3c_pm_save_gpios(void)
+{
+ struct s3c_gpio_chip *ourchip;
+ unsigned int gpio_nr;
+
+ for (gpio_nr = 0; gpio_nr < S3C_GPIO_END; gpio_nr++) {
+ ourchip = s3c_gpiolib_getchip(gpio_nr);
+ if (!ourchip)
+ continue;
+
+ s3c_pm_save_gpio(ourchip);
+
+ S3C_PMDBG("%s: save %08x,%08x,%08x,%08x\n",
+ ourchip->chip.label,
+ ourchip->pm_save[0],
+ ourchip->pm_save[1],
+ ourchip->pm_save[2],
+ ourchip->pm_save[3]);
+
+ gpio_nr += ourchip->chip.ngpio;
+ gpio_nr += CONFIG_S3C_GPIO_SPACE;
+ }
+}
+
+/**
+ * s3c_pm_resume_gpio() - restore gpio chip data after suspend
+ * @ourchip: The suspended chip.
+ */
+static void s3c_pm_resume_gpio(struct s3c_gpio_chip *ourchip)
+{
+ struct s3c_gpio_pm *pm = ourchip->pm;
+
+ if (pm == NULL || pm->resume == NULL)
+ S3C_PMDBG("%s: no pm for %s\n", __func__, ourchip->chip.label);
+ else
+ pm->resume(ourchip);
+}
+
+void s3c_pm_restore_gpios(void)
+{
+ struct s3c_gpio_chip *ourchip;
+ unsigned int gpio_nr;
+
+ for (gpio_nr = 0; gpio_nr < S3C_GPIO_END; gpio_nr++) {
+ ourchip = s3c_gpiolib_getchip(gpio_nr);
+ if (!ourchip)
+ continue;
+
+ s3c_pm_resume_gpio(ourchip);
+
+ gpio_nr += ourchip->chip.ngpio;
+ gpio_nr += CONFIG_S3C_GPIO_SPACE;
+ }
+}
diff --git a/arch/arm/plat-s3c/pm.c b/arch/arm/plat-s3c/pm.c
new file mode 100644
index 00000000000..ea03e5e75da
--- /dev/null
+++ b/arch/arm/plat-s3c/pm.c
@@ -0,0 +1,375 @@
+/* linux/arch/arm/plat-s3c/pm.c
+ *
+ * Copyright 2008 Openmoko, Inc.
+ * Copyright 2004,2006,2008 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ * http://armlinux.simtec.co.uk/
+ *
+ * S3C common power management (suspend to ram) support.
+ *
+ * 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/suspend.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/serial_core.h>
+#include <linux/io.h>
+
+#include <asm/cacheflush.h>
+#include <mach/hardware.h>
+#include <mach/map.h>
+
+#include <plat/regs-serial.h>
+#include <mach/regs-clock.h>
+#include <mach/regs-irq.h>
+#include <asm/irq.h>
+
+#include <plat/pm.h>
+#include <plat/pm-core.h>
+
+/* for external use */
+
+unsigned long s3c_pm_flags;
+
+/* Debug code:
+ *
+ * This code supports debug output to the low level UARTs for use on
+ * resume before the console layer is available.
+*/
+
+#ifdef CONFIG_S3C2410_PM_DEBUG
+extern void printascii(const char *);
+
+void s3c_pm_dbg(const char *fmt, ...)
+{
+ va_list va;
+ char buff[256];
+
+ va_start(va, fmt);
+ vsprintf(buff, fmt, va);
+ va_end(va);
+
+ printascii(buff);
+}
+
+static inline void s3c_pm_debug_init(void)
+{
+ /* restart uart clocks so we can use them to output */
+ s3c_pm_debug_init_uart();
+}
+
+#else
+#define s3c_pm_debug_init() do { } while(0)
+
+#endif /* CONFIG_S3C2410_PM_DEBUG */
+
+/* Save the UART configurations if we are configured for debug. */
+
+unsigned char pm_uart_udivslot;
+
+#ifdef CONFIG_S3C2410_PM_DEBUG
+
+struct pm_uart_save uart_save[CONFIG_SERIAL_SAMSUNG_UARTS];
+
+static void s3c_pm_save_uart(unsigned int uart, struct pm_uart_save *save)
+{
+ void __iomem *regs = S3C_VA_UARTx(uart);
+
+ save->ulcon = __raw_readl(regs + S3C2410_ULCON);
+ save->ucon = __raw_readl(regs + S3C2410_UCON);
+ save->ufcon = __raw_readl(regs + S3C2410_UFCON);
+ save->umcon = __raw_readl(regs + S3C2410_UMCON);
+ save->ubrdiv = __raw_readl(regs + S3C2410_UBRDIV);
+
+ if (pm_uart_udivslot)
+ save->udivslot = __raw_readl(regs + S3C2443_DIVSLOT);
+
+ S3C_PMDBG("UART[%d]: ULCON=%04x, UCON=%04x, UFCON=%04x, UBRDIV=%04x\n",
+ uart, save->ulcon, save->ucon, save->ufcon, save->ubrdiv);
+}
+
+static void s3c_pm_save_uarts(void)
+{
+ struct pm_uart_save *save = uart_save;
+ unsigned int uart;
+
+ for (uart = 0; uart < CONFIG_SERIAL_SAMSUNG_UARTS; uart++, save++)
+ s3c_pm_save_uart(uart, save);
+}
+
+static void s3c_pm_restore_uart(unsigned int uart, struct pm_uart_save *save)
+{
+ void __iomem *regs = S3C_VA_UARTx(uart);
+
+ s3c_pm_arch_update_uart(regs, save);
+
+ __raw_writel(save->ulcon, regs + S3C2410_ULCON);
+ __raw_writel(save->ucon, regs + S3C2410_UCON);
+ __raw_writel(save->ufcon, regs + S3C2410_UFCON);
+ __raw_writel(save->umcon, regs + S3C2410_UMCON);
+ __raw_writel(save->ubrdiv, regs + S3C2410_UBRDIV);
+
+ if (pm_uart_udivslot)
+ __raw_writel(save->udivslot, regs + S3C2443_DIVSLOT);
+}
+
+static void s3c_pm_restore_uarts(void)
+{
+ struct pm_uart_save *save = uart_save;
+ unsigned int uart;
+
+ for (uart = 0; uart < CONFIG_SERIAL_SAMSUNG_UARTS; uart++, save++)
+ s3c_pm_restore_uart(uart, save);
+}
+#else
+static void s3c_pm_save_uarts(void) { }
+static void s3c_pm_restore_uarts(void) { }
+#endif
+
+/* The IRQ ext-int code goes here, it is too small to currently bother
+ * with its own file. */
+
+unsigned long s3c_irqwake_intmask = 0xffffffffL;
+unsigned long s3c_irqwake_eintmask = 0xffffffffL;
+
+int s3c_irqext_wake(unsigned int irqno, unsigned int state)
+{
+ unsigned long bit = 1L << IRQ_EINT_BIT(irqno);
+
+ if (!(s3c_irqwake_eintallow & bit))
+ return -ENOENT;
+
+ printk(KERN_INFO "wake %s for irq %d\n",
+ state ? "enabled" : "disabled", irqno);
+
+ if (!state)
+ s3c_irqwake_eintmask |= bit;
+ else
+ s3c_irqwake_eintmask &= ~bit;
+
+ return 0;
+}
+
+/* helper functions to save and restore register state */
+
+/**
+ * s3c_pm_do_save() - save a set of registers for restoration on resume.
+ * @ptr: Pointer to an array of registers.
+ * @count: Size of the ptr array.
+ *
+ * Run through the list of registers given, saving their contents in the
+ * array for later restoration when we wakeup.
+ */
+void s3c_pm_do_save(struct sleep_save *ptr, int count)
+{
+ for (; count > 0; count--, ptr++) {
+ ptr->val = __raw_readl(ptr->reg);
+ S3C_PMDBG("saved %p value %08lx\n", ptr->reg, ptr->val);
+ }
+}
+
+/**
+ * s3c_pm_do_restore() - restore register values from the save list.
+ * @ptr: Pointer to an array of registers.
+ * @count: Size of the ptr array.
+ *
+ * Restore the register values saved from s3c_pm_do_save().
+ *
+ * Note, we do not use S3C_PMDBG() in here, as the system may not have
+ * restore the UARTs state yet
+*/
+
+void s3c_pm_do_restore(struct sleep_save *ptr, int count)
+{
+ for (; count > 0; count--, ptr++) {
+ printk(KERN_DEBUG "restore %p (restore %08lx, was %08x)\n",
+ ptr->reg, ptr->val, __raw_readl(ptr->reg));
+
+ __raw_writel(ptr->val, ptr->reg);
+ }
+}
+
+/**
+ * s3c_pm_do_restore_core() - early restore register values from save list.
+ *
+ * This is simialr to s3c_pm_do_restore() except we try and minimise the
+ * side effects of the function in case registers that hardware might need
+ * to work has been restored.
+ *
+ * WARNING: Do not put any debug in here that may effect memory or use
+ * peripherals, as things may be changing!
+*/
+
+void s3c_pm_do_restore_core(struct sleep_save *ptr, int count)
+{
+ for (; count > 0; count--, ptr++)
+ __raw_writel(ptr->val, ptr->reg);
+}
+
+/* s3c2410_pm_show_resume_irqs
+ *
+ * print any IRQs asserted at resume time (ie, we woke from)
+*/
+static void s3c_pm_show_resume_irqs(int start, unsigned long which,
+ unsigned long mask)
+{
+ int i;
+
+ which &= ~mask;
+
+ for (i = 0; i <= 31; i++) {
+ if (which & (1L<<i)) {
+ S3C_PMDBG("IRQ %d asserted at resume\n", start+i);
+ }
+ }
+}
+
+
+void (*pm_cpu_prep)(void);
+void (*pm_cpu_sleep)(void);
+
+#define any_allowed(mask, allow) (((mask) & (allow)) != (allow))
+
+/* s3c_pm_enter
+ *
+ * central control for sleep/resume process
+*/
+
+static int s3c_pm_enter(suspend_state_t state)
+{
+ unsigned long regs_save[16];
+
+ /* ensure the debug is initialised (if enabled) */
+
+ s3c_pm_debug_init();
+
+ S3C_PMDBG("%s(%d)\n", __func__, state);
+
+ if (pm_cpu_prep == NULL || pm_cpu_sleep == NULL) {
+ printk(KERN_ERR "%s: error: no cpu sleep function\n", __func__);
+ return -EINVAL;
+ }
+
+ /* check if we have anything to wake-up with... bad things seem
+ * to happen if you suspend with no wakeup (system will often
+ * require a full power-cycle)
+ */
+
+ if (!any_allowed(s3c_irqwake_intmask, s3c_irqwake_intallow) &&
+ !any_allowed(s3c_irqwake_eintmask, s3c_irqwake_eintallow)) {
+ printk(KERN_ERR "%s: No wake-up sources!\n", __func__);
+ printk(KERN_ERR "%s: Aborting sleep\n", __func__);
+ return -EINVAL;
+ }
+
+ /* prepare check area if configured */
+
+ s3c_pm_check_prepare();
+
+ /* store the physical address of the register recovery block */
+
+ s3c_sleep_save_phys = virt_to_phys(regs_save);
+
+ S3C_PMDBG("s3c_sleep_save_phys=0x%08lx\n", s3c_sleep_save_phys);
+
+ /* save all necessary core registers not covered by the drivers */
+
+ s3c_pm_save_gpios();
+ s3c_pm_save_uarts();
+ s3c_pm_save_core();
+
+ /* set the irq configuration for wake */
+
+ s3c_pm_configure_extint();
+
+ S3C_PMDBG("sleep: irq wakeup masks: %08lx,%08lx\n",
+ s3c_irqwake_intmask, s3c_irqwake_eintmask);
+
+ s3c_pm_arch_prepare_irqs();
+
+ /* call cpu specific preparation */
+
+ pm_cpu_prep();
+
+ /* flush cache back to ram */
+
+ flush_cache_all();
+
+ s3c_pm_check_store();
+
+ /* send the cpu to sleep... */
+
+ s3c_pm_arch_stop_clocks();
+
+ /* s3c2410_cpu_save will also act as our return point from when
+ * we resume as it saves its own register state, so use the return
+ * code to differentiate return from save and return from sleep */
+
+ if (s3c_cpu_save(regs_save) == 0) {
+ flush_cache_all();
+ pm_cpu_sleep();
+ }
+
+ /* restore the cpu state using the kernel's cpu init code. */
+
+ cpu_init();
+
+ /* restore the system state */
+
+ s3c_pm_restore_core();
+ s3c_pm_restore_uarts();
+ s3c_pm_restore_gpios();
+
+ s3c_pm_debug_init();
+
+ /* check what irq (if any) restored the system */
+
+ s3c_pm_arch_show_resume_irqs();
+
+ S3C_PMDBG("%s: post sleep, preparing to return\n", __func__);
+
+ /* LEDs should now be 1110 */
+ s3c_pm_debug_smdkled(1 << 1, 0);
+
+ s3c_pm_check_restore();
+
+ /* ok, let's return from sleep */
+
+ S3C_PMDBG("S3C PM Resume (post-restore)\n");
+ return 0;
+}
+
+static int s3c_pm_begin(suspend_state_t state)
+{
+ int ret = 0;
+
+#ifdef CONFIG_REGULATOR
+ ret = regulator_suspend_prepare(state);
+#endif
+ return ret;
+}
+
+static struct platform_suspend_ops s3c_pm_ops = {
+ .enter = s3c_pm_enter,
+ .valid = suspend_valid_only_mem,
+ .begin = s3c_pm_begin,
+};
+
+/* s3c_pm_init
+ *
+ * Attach the power management functions. This should be called
+ * from the board specific initialisation if the board supports
+ * it.
+*/
+
+int __init s3c_pm_init(void)
+{
+ printk("S3C Power Management, Copyright 2004 Simtec Electronics\n");
+
+ suspend_set_ops(&s3c_pm_ops);
+ return 0;
+}
diff --git a/arch/arm/plat-s3c24xx/Makefile b/arch/arm/plat-s3c24xx/Makefile
index 2fe793c9235..72bc07dec70 100644
--- a/arch/arm/plat-s3c24xx/Makefile
+++ b/arch/arm/plat-s3c24xx/Makefile
@@ -27,6 +27,7 @@ obj-$(CONFIG_CPU_S3C244X) += s3c244x-irq.o
obj-$(CONFIG_CPU_S3C244X) += s3c244x-clock.o
obj-$(CONFIG_PM_SIMTEC) += pm-simtec.o
obj-$(CONFIG_PM) += pm.o
+obj-$(CONFIG_PM) += irq-pm.o
obj-$(CONFIG_PM) += sleep.o
obj-$(CONFIG_HAVE_PWM) += pwm.o
obj-$(CONFIG_S3C2410_CLOCK) += s3c2410-clock.o
diff --git a/arch/arm/plat-s3c24xx/common-smdk.c b/arch/arm/plat-s3c24xx/common-smdk.c
index 3d4837021ac..1a8347cec20 100644
--- a/arch/arm/plat-s3c24xx/common-smdk.c
+++ b/arch/arm/plat-s3c24xx/common-smdk.c
@@ -201,5 +201,5 @@ void __init smdk_machine_init(void)
platform_add_devices(smdk_devs, ARRAY_SIZE(smdk_devs));
- s3c2410_pm_init();
+ s3c_pm_init();
}
diff --git a/arch/arm/plat-s3c24xx/gpiolib.c b/arch/arm/plat-s3c24xx/gpiolib.c
index f95c6c9d9f1..a9cf22d32b9 100644
--- a/arch/arm/plat-s3c24xx/gpiolib.c
+++ b/arch/arm/plat-s3c24xx/gpiolib.c
@@ -22,6 +22,7 @@
#include <plat/gpio-core.h>
#include <mach/hardware.h>
#include <asm/irq.h>
+#include <plat/pm.h>
#include <mach/regs-gpio.h>
@@ -62,6 +63,7 @@ static int s3c24xx_gpiolib_banka_output(struct gpio_chip *chip,
struct s3c_gpio_chip s3c24xx_gpios[] = {
[0] = {
.base = S3C24XX_GPIO_BASE(S3C2410_GPA0),
+ .pm = __gpio_pm(&s3c_gpio_pm_1bit),
.chip = {
.base = S3C2410_GPA0,
.owner = THIS_MODULE,
@@ -73,6 +75,7 @@ struct s3c_gpio_chip s3c24xx_gpios[] = {
},
[1] = {
.base = S3C24XX_GPIO_BASE(S3C2410_GPB0),
+ .pm = __gpio_pm(&s3c_gpio_pm_2bit),
.chip = {
.base = S3C2410_GPB0,
.owner = THIS_MODULE,
@@ -82,6 +85,7 @@ struct s3c_gpio_chip s3c24xx_gpios[] = {
},
[2] = {
.base = S3C24XX_GPIO_BASE(S3C2410_GPC0),
+ .pm = __gpio_pm(&s3c_gpio_pm_2bit),
.chip = {
.base = S3C2410_GPC0,
.owner = THIS_MODULE,
@@ -91,6 +95,7 @@ struct s3c_gpio_chip s3c24xx_gpios[] = {
},
[3] = {
.base = S3C24XX_GPIO_BASE(S3C2410_GPD0),
+ .pm = __gpio_pm(&s3c_gpio_pm_2bit),
.chip = {
.base = S3C2410_GPD0,
.owner = THIS_MODULE,
@@ -100,6 +105,7 @@ struct s3c_gpio_chip s3c24xx_gpios[] = {
},
[4] = {
.base = S3C24XX_GPIO_BASE(S3C2410_GPE0),
+ .pm = __gpio_pm(&s3c_gpio_pm_2bit),
.chip = {
.base = S3C2410_GPE0,
.label = "GPIOE",
@@ -109,6 +115,7 @@ struct s3c_gpio_chip s3c24xx_gpios[] = {
},
[5] = {
.base = S3C24XX_GPIO_BASE(S3C2410_GPF0),
+ .pm = __gpio_pm(&s3c_gpio_pm_2bit),
.chip = {
.base = S3C2410_GPF0,
.owner = THIS_MODULE,
@@ -118,6 +125,7 @@ struct s3c_gpio_chip s3c24xx_gpios[] = {
},
[6] = {
.base = S3C24XX_GPIO_BASE(S3C2410_GPG0),
+ .pm = __gpio_pm(&s3c_gpio_pm_2bit),
.chip = {
.base = S3C2410_GPG0,
.owner = THIS_MODULE,
diff --git a/arch/arm/plat-s3c24xx/include/plat/irq.h b/arch/arm/plat-s3c24xx/include/plat/irq.h
index bf15e1c5d90..48fb56456b5 100644
--- a/arch/arm/plat-s3c24xx/include/plat/irq.h
+++ b/arch/arm/plat-s3c24xx/include/plat/irq.h
@@ -10,6 +10,12 @@
* published by the Free Software Foundation.
*/
+#include <linux/io.h>
+
+#include <mach/hardware.h>
+#include <mach/regs-irq.h>
+#include <mach/regs-gpio.h>
+
#define irqdbf(x...)
#define irqdbf2(x...)
diff --git a/arch/arm/plat-s3c24xx/include/plat/map.h b/arch/arm/plat-s3c24xx/include/plat/map.h
index fef8ea8b8e1..eed8f78e759 100644
--- a/arch/arm/plat-s3c24xx/include/plat/map.h
+++ b/arch/arm/plat-s3c24xx/include/plat/map.h
@@ -31,6 +31,8 @@
#define S3C24XX_SZ_UART SZ_1M
#define S3C_UART_OFFSET (0x4000)
+#define S3C_VA_UARTx(uart) (S3C_VA_UART + ((uart * S3C_UART_OFFSET)))
+
/* Timers */
#define S3C24XX_VA_TIMER S3C_VA_TIMER
#define S3C2410_PA_TIMER (0x51000000)
diff --git a/arch/arm/plat-s3c24xx/include/plat/pm-core.h b/arch/arm/plat-s3c24xx/include/plat/pm-core.h
new file mode 100644
index 00000000000..fb45dd9adca
--- /dev/null
+++ b/arch/arm/plat-s3c24xx/include/plat/pm-core.h
@@ -0,0 +1,64 @@
+/* linux/arch/arm/plat-s3c24xx/include/plat/pll.h
+ *
+ * Copyright 2008 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ * http://armlinux.simtec.co.uk/
+ *
+ * S3C24xx - PM core support for arch/arm/plat-s3c/pm.c
+ *
+ * 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.
+ */
+
+static inline void s3c_pm_debug_init_uart(void)
+{
+ unsigned long tmp = __raw_readl(S3C2410_CLKCON);
+
+ /* re-start uart clocks */
+ tmp |= S3C2410_CLKCON_UART0;
+ tmp |= S3C2410_CLKCON_UART1;
+ tmp |= S3C2410_CLKCON_UART2;
+
+ __raw_writel(tmp, S3C2410_CLKCON);
+ udelay(10);
+}
+
+static inline void s3c_pm_arch_prepare_irqs(void)
+{
+ __raw_writel(s3c_irqwake_intmask, S3C2410_INTMSK);
+ __raw_writel(s3c_irqwake_eintmask, S3C2410_EINTMASK);
+
+ /* ack any outstanding external interrupts before we go to sleep */
+
+ __raw_writel(__raw_readl(S3C2410_EINTPEND), S3C2410_EINTPEND);
+ __raw_writel(__raw_readl(S3C2410_INTPND), S3C2410_INTPND);
+ __raw_writel(__raw_readl(S3C2410_SRCPND), S3C2410_SRCPND);
+
+}
+
+static inline void s3c_pm_arch_stop_clocks(void)
+{
+ __raw_writel(0x00, S3C2410_CLKCON); /* turn off clocks over sleep */
+}
+
+static void s3c_pm_show_resume_irqs(int start, unsigned long which,
+ unsigned long mask);
+
+static inline void s3c_pm_arch_show_resume_irqs(void)
+{
+ S3C_PMDBG("post sleep: IRQs 0x%08x, 0x%08x\n",
+ __raw_readl(S3C2410_SRCPND),
+ __raw_readl(S3C2410_EINTPEND));
+
+ s3c_pm_show_resume_irqs(IRQ_EINT0, __raw_readl(S3C2410_SRCPND),
+ s3c_irqwake_intmask);
+
+ s3c_pm_show_resume_irqs(IRQ_EINT4-4, __raw_readl(S3C2410_EINTPEND),
+ s3c_irqwake_eintmask);
+}
+
+static inline void s3c_pm_arch_update_uart(void __iomem *regs,
+ struct pm_uart_save *save)
+{
+}
diff --git a/arch/arm/plat-s3c24xx/irq-pm.c b/arch/arm/plat-s3c24xx/irq-pm.c
new file mode 100644
index 00000000000..b7acf1a8ecd
--- /dev/null
+++ b/arch/arm/plat-s3c24xx/irq-pm.c
@@ -0,0 +1,95 @@
+/* linux/arch/arm/plat-s3c24xx/irq-om.c
+ *
+ * Copyright (c) 2003,2004 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ * http://armlinux.simtec.co.uk/
+ *
+ * S3C24XX - IRQ PM code
+ *
+ * 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/sysdev.h>
+
+#include <plat/cpu.h>
+#include <plat/pm.h>
+#include <plat/irq.h>
+
+/* state for IRQs over sleep */
+
+/* default is to allow for EINT0..EINT15, and IRQ_RTC as wakeup sources
+ *
+ * set bit to 1 in allow bitfield to enable the wakeup settings on it
+*/
+
+unsigned long s3c_irqwake_intallow = 1L << (IRQ_RTC - IRQ_EINT0) | 0xfL;
+unsigned long s3c_irqwake_eintallow = 0x0000fff0L;
+
+int s3c_irq_wake(unsigned int irqno, unsigned int state)
+{
+ unsigned long irqbit = 1 << (irqno - IRQ_EINT0);
+
+ if (!(s3c_irqwake_intallow & irqbit))
+ return -ENOENT;
+
+ printk(KERN_INFO "wake %s for irq %d\n",
+ state ? "enabled" : "disabled", irqno);
+
+ if (!state)
+ s3c_irqwake_intmask |= irqbit;
+ else
+ s3c_irqwake_intmask &= ~irqbit;
+
+ return 0;
+}
+
+static struct sleep_save irq_save[] = {
+ SAVE_ITEM(S3C2410_INTMSK),
+ SAVE_ITEM(S3C2410_INTSUBMSK),
+};
+
+/* the extint values move between the s3c2410/s3c2440 and the s3c2412
+ * so we use an array to hold them, and to calculate the address of
+ * the register at run-time
+*/
+
+static unsigned long save_extint[3];
+static unsigned long save_eintflt[4];
+static unsigned long save_eintmask;
+
+int s3c24xx_irq_suspend(struct sys_device *dev, pm_message_t state)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(save_extint); i++)
+ save_extint[i] = __raw_readl(S3C24XX_EXTINT0 + (i*4));
+
+ for (i = 0; i < ARRAY_SIZE(save_eintflt); i++)
+ save_eintflt[i] = __raw_readl(S3C24XX_EINFLT0 + (i*4));
+
+ s3c_pm_do_save(irq_save, ARRAY_SIZE(irq_save));
+ save_eintmask = __raw_readl(S3C24XX_EINTMASK);
+
+ return 0;
+}
+
+int s3c24xx_irq_resume(struct sys_device *dev)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(save_extint); i++)
+ __raw_writel(save_extint[i], S3C24XX_EXTINT0 + (i*4));
+
+ for (i = 0; i < ARRAY_SIZE(save_eintflt); i++)
+ __raw_writel(save_eintflt[i], S3C24XX_EINFLT0 + (i*4));
+
+ s3c_pm_do_restore(irq_save, ARRAY_SIZE(irq_save));
+ __raw_writel(save_eintmask, S3C24XX_EINTMASK);
+
+ return 0;
+}
diff --git a/arch/arm/plat-s3c24xx/irq.c b/arch/arm/plat-s3c24xx/irq.c
index f31770cf71a..d696bbd1c9e 100644
--- a/arch/arm/plat-s3c24xx/irq.c
+++ b/arch/arm/plat-s3c24xx/irq.c
@@ -1,6 +1,6 @@
/* linux/arch/arm/plat-s3c24xx/irq.c
*
- * Copyright (c) 2003,2004 Simtec Electronics
+ * Copyright (c) 2003,2004 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
*
* This program is free software; you can redistribute it and/or modify
@@ -16,38 +16,6 @@
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * Changelog:
- *
- * 22-Jul-2004 Ben Dooks <ben@simtec.co.uk>
- * Fixed compile warnings
- *
- * 22-Jul-2004 Roc Wu <cooloney@yahoo.com.cn>
- * Fixed s3c_extirq_type
- *
- * 21-Jul-2004 Arnaud Patard (Rtp) <arnaud.patard@rtp-net.org>
- * Addition of ADC/TC demux
- *
- * 04-Oct-2004 Klaus Fetscher <k.fetscher@fetron.de>
- * Fix for set_irq_type() on low EINT numbers
- *
- * 05-Oct-2004 Ben Dooks <ben@simtec.co.uk>
- * Tidy up KF's patch and sort out new release
- *
- * 05-Oct-2004 Ben Dooks <ben@simtec.co.uk>
- * Add support for power management controls
- *
- * 04-Nov-2004 Ben Dooks
- * Fix standard IRQ wake for EINT0..4 and RTC
- *
- * 22-Feb-2005 Ben Dooks
- * Fixed edge-triggering on ADC IRQ
- *
- * 28-Jun-2005 Ben Dooks
- * Mark IRQ_LCD valid
- *
- * 25-Jul-2005 Ben Dooks
- * Split the S3C2440 IRQ code to separate file
*/
#include <linux/init.h>
@@ -55,81 +23,16 @@
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/sysdev.h>
-#include <linux/io.h>
-#include <mach/hardware.h>
#include <asm/irq.h>
-
#include <asm/mach/irq.h>
#include <plat/regs-irqtype.h>
-#include <mach/regs-irq.h>
-#include <mach/regs-gpio.h>
#include <plat/cpu.h>
#include <plat/pm.h>
#include <plat/irq.h>
-/* wakeup irq control */
-
-#ifdef CONFIG_PM
-
-/* state for IRQs over sleep */
-
-/* default is to allow for EINT0..EINT15, and IRQ_RTC as wakeup sources
- *
- * set bit to 1 in allow bitfield to enable the wakeup settings on it
-*/
-
-unsigned long s3c_irqwake_intallow = 1L << (IRQ_RTC - IRQ_EINT0) | 0xfL;
-unsigned long s3c_irqwake_intmask = 0xffffffffL;
-unsigned long s3c_irqwake_eintallow = 0x0000fff0L;
-unsigned long s3c_irqwake_eintmask = 0xffffffffL;
-
-int
-s3c_irq_wake(unsigned int irqno, unsigned int state)
-{
- unsigned long irqbit = 1 << (irqno - IRQ_EINT0);
-
- if (!(s3c_irqwake_intallow & irqbit))
- return -ENOENT;
-
- printk(KERN_INFO "wake %s for irq %d\n",
- state ? "enabled" : "disabled", irqno);
-
- if (!state)
- s3c_irqwake_intmask |= irqbit;
- else
- s3c_irqwake_intmask &= ~irqbit;
-
- return 0;
-}
-
-static int
-s3c_irqext_wake(unsigned int irqno, unsigned int state)
-{
- unsigned long bit = 1L << (irqno - EXTINT_OFF);
-
- if (!(s3c_irqwake_eintallow & bit))
- return -ENOENT;
-
- printk(KERN_INFO "wake %s for irq %d\n",
- state ? "enabled" : "disabled", irqno);
-
- if (!state)
- s3c_irqwake_eintmask |= bit;
- else
- s3c_irqwake_eintmask &= ~bit;
-
- return 0;
-}
-
-#else
-#define s3c_irqext_wake NULL
-#define s3c_irq_wake NULL
-#endif
-
-
static void
s3c_irq_mask(unsigned int irqno)
{
@@ -618,59 +521,6 @@ s3c_irq_demux_extint4t7(unsigned int irq,
}
}
-#ifdef CONFIG_PM
-
-static struct sleep_save irq_save[] = {
- SAVE_ITEM(S3C2410_INTMSK),
- SAVE_ITEM(S3C2410_INTSUBMSK),
-};
-
-/* the extint values move between the s3c2410/s3c2440 and the s3c2412
- * so we use an array to hold them, and to calculate the address of
- * the register at run-time
-*/
-
-static unsigned long save_extint[3];
-static unsigned long save_eintflt[4];
-static unsigned long save_eintmask;
-
-int s3c24xx_irq_suspend(struct sys_device *dev, pm_message_t state)
-{
- unsigned int i;
-
- for (i = 0; i < ARRAY_SIZE(save_extint); i++)
- save_extint[i] = __raw_readl(S3C24XX_EXTINT0 + (i*4));
-
- for (i = 0; i < ARRAY_SIZE(save_eintflt); i++)
- save_eintflt[i] = __raw_readl(S3C24XX_EINFLT0 + (i*4));
-
- s3c2410_pm_do_save(irq_save, ARRAY_SIZE(irq_save));
- save_eintmask = __raw_readl(S3C24XX_EINTMASK);
-
- return 0;
-}
-
-int s3c24xx_irq_resume(struct sys_device *dev)
-{
- unsigned int i;
-
- for (i = 0; i < ARRAY_SIZE(save_extint); i++)
- __raw_writel(save_extint[i], S3C24XX_EXTINT0 + (i*4));
-
- for (i = 0; i < ARRAY_SIZE(save_eintflt); i++)
- __raw_writel(save_eintflt[i], S3C24XX_EINFLT0 + (i*4));
-
- s3c2410_pm_do_restore(irq_save, ARRAY_SIZE(irq_save));
- __raw_writel(save_eintmask, S3C24XX_EINTMASK);
-
- return 0;
-}
-
-#else
-#define s3c24xx_irq_suspend NULL
-#define s3c24xx_irq_resume NULL
-#endif
-
/* s3c24xx_init_irq
*
* Initialise S3C2410 IRQ system
diff --git a/arch/arm/plat-s3c24xx/pm-simtec.c b/arch/arm/plat-s3c24xx/pm-simtec.c
index 21dfa74773d..da0d3217d3e 100644
--- a/arch/arm/plat-s3c24xx/pm-simtec.c
+++ b/arch/arm/plat-s3c24xx/pm-simtec.c
@@ -61,7 +61,7 @@ static __init int pm_simtec_init(void)
__raw_writel(gstatus4, S3C2410_GSTATUS4);
- return s3c2410_pm_init();
+ return s3c_pm_init();
}
arch_initcall(pm_simtec_init);
diff --git a/arch/arm/plat-s3c24xx/pm.c b/arch/arm/plat-s3c24xx/pm.c
index 325631e2aed..57062bc4247 100644
--- a/arch/arm/plat-s3c24xx/pm.c
+++ b/arch/arm/plat-s3c24xx/pm.c
@@ -31,16 +31,10 @@
#include <linux/errno.h>
#include <linux/time.h>
#include <linux/interrupt.h>
-#include <linux/crc32.h>
-#include <linux/ioport.h>
-#include <linux/delay.h>
#include <linux/serial_core.h>
#include <linux/io.h>
#include <linux/regulator/machine.h>
-#include <asm/cacheflush.h>
-#include <mach/hardware.h>
-
#include <plat/regs-serial.h>
#include <mach/regs-clock.h>
#include <mach/regs-gpio.h>
@@ -51,10 +45,6 @@
#include <plat/pm.h>
-/* for external use */
-
-unsigned long s3c_pm_flags;
-
#define PFX "s3c24xx-pm: "
static struct sleep_save core_save[] = {
@@ -86,364 +76,17 @@ static struct sleep_save core_save[] = {
SAVE_ITEM(S3C2410_CLKSLOW),
};
-static struct gpio_sleep {
- void __iomem *base;
- unsigned int gpcon;
- unsigned int gpdat;
- unsigned int gpup;
-} gpio_save[] = {
- [0] = {
- .base = S3C2410_GPACON,
- },
- [1] = {
- .base = S3C2410_GPBCON,
- },
- [2] = {
- .base = S3C2410_GPCCON,
- },
- [3] = {
- .base = S3C2410_GPDCON,
- },
- [4] = {
- .base = S3C2410_GPECON,
- },
- [5] = {
- .base = S3C2410_GPFCON,
- },
- [6] = {
- .base = S3C2410_GPGCON,
- },
- [7] = {
- .base = S3C2410_GPHCON,
- },
-};
-
static struct sleep_save misc_save[] = {
SAVE_ITEM(S3C2410_DCLKCON),
};
-#ifdef CONFIG_S3C2410_PM_DEBUG
-
-#define SAVE_UART(va) \
- SAVE_ITEM((va) + S3C2410_ULCON), \
- SAVE_ITEM((va) + S3C2410_UCON), \
- SAVE_ITEM((va) + S3C2410_UFCON), \
- SAVE_ITEM((va) + S3C2410_UMCON), \
- SAVE_ITEM((va) + S3C2410_UBRDIV)
-
-static struct sleep_save uart_save[] = {
- SAVE_UART(S3C24XX_VA_UART0),
- SAVE_UART(S3C24XX_VA_UART1),
-#ifndef CONFIG_CPU_S3C2400
- SAVE_UART(S3C24XX_VA_UART2),
-#endif
-};
-
-/* debug
- *
- * we send the debug to printascii() to allow it to be seen if the
- * system never wakes up from the sleep
-*/
-
-extern void printascii(const char *);
-
-void pm_dbg(const char *fmt, ...)
-{
- va_list va;
- char buff[256];
-
- va_start(va, fmt);
- vsprintf(buff, fmt, va);
- va_end(va);
-
- printascii(buff);
-}
-
-static void s3c2410_pm_debug_init(void)
-{
- unsigned long tmp = __raw_readl(S3C2410_CLKCON);
-
- /* re-start uart clocks */
- tmp |= S3C2410_CLKCON_UART0;
- tmp |= S3C2410_CLKCON_UART1;
- tmp |= S3C2410_CLKCON_UART2;
-
- __raw_writel(tmp, S3C2410_CLKCON);
- udelay(10);
-}
-
-#define DBG(fmt...) pm_dbg(fmt)
-#else
-#define DBG(fmt...) printk(KERN_DEBUG fmt)
-
-#define s3c2410_pm_debug_init() do { } while(0)
-
-static struct sleep_save uart_save[] = {};
-#endif
-
-#if defined(CONFIG_S3C2410_PM_CHECK) && CONFIG_S3C2410_PM_CHECK_CHUNKSIZE != 0
-
-/* suspend checking code...
- *
- * this next area does a set of crc checks over all the installed
- * memory, so the system can verify if the resume was ok.
- *
- * CONFIG_S3C2410_PM_CHECK_CHUNKSIZE defines the block-size for the CRC,
- * increasing it will mean that the area corrupted will be less easy to spot,
- * and reducing the size will cause the CRC save area to grow
-*/
-
-#define CHECK_CHUNKSIZE (CONFIG_S3C2410_PM_CHECK_CHUNKSIZE * 1024)
-
-static u32 crc_size; /* size needed for the crc block */
-static u32 *crcs; /* allocated over suspend/resume */
-
-typedef u32 *(run_fn_t)(struct resource *ptr, u32 *arg);
-
-/* s3c2410_pm_run_res
- *
- * go thorugh the given resource list, and look for system ram
-*/
-
-static void s3c2410_pm_run_res(struct resource *ptr, run_fn_t fn, u32 *arg)
-{
- while (ptr != NULL) {
- if (ptr->child != NULL)
- s3c2410_pm_run_res(ptr->child, fn, arg);
-
- if ((ptr->flags & IORESOURCE_MEM) &&
- strcmp(ptr->name, "System RAM") == 0) {
- DBG("Found system RAM at %08lx..%08lx\n",
- ptr->start, ptr->end);
- arg = (fn)(ptr, arg);
- }
-
- ptr = ptr->sibling;
- }
-}
-
-static void s3c2410_pm_run_sysram(run_fn_t fn, u32 *arg)
-{
- s3c2410_pm_run_res(&iomem_resource, fn, arg);
-}
-
-static u32 *s3c2410_pm_countram(struct resource *res, u32 *val)
-{
- u32 size = (u32)(res->end - res->start)+1;
-
- size += CHECK_CHUNKSIZE-1;
- size /= CHECK_CHUNKSIZE;
-
- DBG("Area %08lx..%08lx, %d blocks\n", res->start, res->end, size);
-
- *val += size * sizeof(u32);
- return val;
-}
-
-/* s3c2410_pm_prepare_check
- *
- * prepare the necessary information for creating the CRCs. This
- * must be done before the final save, as it will require memory
- * allocating, and thus touching bits of the kernel we do not
- * know about.
-*/
-
-static void s3c2410_pm_check_prepare(void)
-{
- crc_size = 0;
-
- s3c2410_pm_run_sysram(s3c2410_pm_countram, &crc_size);
-
- DBG("s3c2410_pm_prepare_check: %u checks needed\n", crc_size);
-
- crcs = kmalloc(crc_size+4, GFP_KERNEL);
- if (crcs == NULL)
- printk(KERN_ERR "Cannot allocated CRC save area\n");
-}
-
-static u32 *s3c2410_pm_makecheck(struct resource *res, u32 *val)
-{
- unsigned long addr, left;
-
- for (addr = res->start; addr < res->end;
- addr += CHECK_CHUNKSIZE) {
- left = res->end - addr;
-
- if (left > CHECK_CHUNKSIZE)
- left = CHECK_CHUNKSIZE;
-
- *val = crc32_le(~0, phys_to_virt(addr), left);
- val++;
- }
-
- return val;
-}
-
-/* s3c2410_pm_check_store
- *
- * compute the CRC values for the memory blocks before the final
- * sleep.
-*/
-
-static void s3c2410_pm_check_store(void)
-{
- if (crcs != NULL)
- s3c2410_pm_run_sysram(s3c2410_pm_makecheck, crcs);
-}
-
-/* in_region
- *
- * return TRUE if the area defined by ptr..ptr+size contatins the
- * what..what+whatsz
-*/
-
-static inline int in_region(void *ptr, int size, void *what, size_t whatsz)
-{
- if ((what+whatsz) < ptr)
- return 0;
-
- if (what > (ptr+size))
- return 0;
-
- return 1;
-}
-
-static u32 *s3c2410_pm_runcheck(struct resource *res, u32 *val)
-{
- void *save_at = phys_to_virt(s3c2410_sleep_save_phys);
- unsigned long addr;
- unsigned long left;
- void *ptr;
- u32 calc;
-
- for (addr = res->start; addr < res->end;
- addr += CHECK_CHUNKSIZE) {
- left = res->end - addr;
-
- if (left > CHECK_CHUNKSIZE)
- left = CHECK_CHUNKSIZE;
-
- ptr = phys_to_virt(addr);
-
- if (in_region(ptr, left, crcs, crc_size)) {
- DBG("skipping %08lx, has crc block in\n", addr);
- goto skip_check;
- }
-
- if (in_region(ptr, left, save_at, 32*4 )) {
- DBG("skipping %08lx, has save block in\n", addr);
- goto skip_check;
- }
-
- /* calculate and check the checksum */
-
- calc = crc32_le(~0, ptr, left);
- if (calc != *val) {
- printk(KERN_ERR PFX "Restore CRC error at "
- "%08lx (%08x vs %08x)\n", addr, calc, *val);
-
- DBG("Restore CRC error at %08lx (%08x vs %08x)\n",
- addr, calc, *val);
- }
-
- skip_check:
- val++;
- }
-
- return val;
-}
-
-/* s3c2410_pm_check_restore
- *
- * check the CRCs after the restore event and free the memory used
- * to hold them
-*/
-
-static void s3c2410_pm_check_restore(void)
-{
- if (crcs != NULL) {
- s3c2410_pm_run_sysram(s3c2410_pm_runcheck, crcs);
- kfree(crcs);
- crcs = NULL;
- }
-}
-
-#else
-
-#define s3c2410_pm_check_prepare() do { } while(0)
-#define s3c2410_pm_check_restore() do { } while(0)
-#define s3c2410_pm_check_store() do { } while(0)
-#endif
-
-/* helper functions to save and restore register state */
-
-void s3c2410_pm_do_save(struct sleep_save *ptr, int count)
-{
- for (; count > 0; count--, ptr++) {
- ptr->val = __raw_readl(ptr->reg);
- DBG("saved %p value %08lx\n", ptr->reg, ptr->val);
- }
-}
-
-/* s3c2410_pm_do_restore
- *
- * restore the system from the given list of saved registers
- *
- * Note, we do not use DBG() in here, as the system may not have
- * restore the UARTs state yet
-*/
-
-void s3c2410_pm_do_restore(struct sleep_save *ptr, int count)
-{
- for (; count > 0; count--, ptr++) {
- printk(KERN_DEBUG "restore %p (restore %08lx, was %08x)\n",
- ptr->reg, ptr->val, __raw_readl(ptr->reg));
-
- __raw_writel(ptr->val, ptr->reg);
- }
-}
-
-/* s3c2410_pm_do_restore_core
- *
- * similar to s3c2410_pm_do_restore_core
- *
- * WARNING: Do not put any debug in here that may effect memory or use
- * peripherals, as things may be changing!
-*/
-
-static void s3c2410_pm_do_restore_core(struct sleep_save *ptr, int count)
-{
- for (; count > 0; count--, ptr++) {
- __raw_writel(ptr->val, ptr->reg);
- }
-}
-
-/* s3c2410_pm_show_resume_irqs
- *
- * print any IRQs asserted at resume time (ie, we woke from)
-*/
-
-static void s3c2410_pm_show_resume_irqs(int start, unsigned long which,
- unsigned long mask)
-{
- int i;
-
- which &= ~mask;
-
- for (i = 0; i <= 31; i++) {
- if ((which) & (1L<<i)) {
- DBG("IRQ %d asserted at resume\n", start+i);
- }
- }
-}
-
-/* s3c2410_pm_check_resume_pin
+/* s3c_pm_check_resume_pin
*
* check to see if the pin is configured correctly for sleep mode, and
* make any necessary adjustments if it is not
*/
-static void s3c2410_pm_check_resume_pin(unsigned int pin, unsigned int irqoffs)
+static void s3c_pm_check_resume_pin(unsigned int pin, unsigned int irqoffs)
{
unsigned long irqstate;
unsigned long pinstate;
@@ -458,21 +101,21 @@ static void s3c2410_pm_check_resume_pin(unsigned int pin, unsigned int irqoffs)
if (!irqstate) {
if (pinstate == S3C2410_GPIO_IRQ)
- DBG("Leaving IRQ %d (pin %d) enabled\n", irq, pin);
+ S3C_PMDBG("Leaving IRQ %d (pin %d) enabled\n", irq, pin);
} else {
if (pinstate == S3C2410_GPIO_IRQ) {
- DBG("Disabling IRQ %d (pin %d)\n", irq, pin);
+ S3C_PMDBG("Disabling IRQ %d (pin %d)\n", irq, pin);
s3c2410_gpio_cfgpin(pin, S3C2410_GPIO_INPUT);
}
}
}
-/* s3c2410_pm_configure_extint
+/* s3c_pm_configure_extint
*
* configure all external interrupt pins
*/
-static void s3c2410_pm_configure_extint(void)
+void s3c_pm_configure_extint(void)
{
int pin;
@@ -482,320 +125,28 @@ static void s3c2410_pm_configure_extint(void)
*/
for (pin = S3C2410_GPF0; pin <= S3C2410_GPF7; pin++) {
- s3c2410_pm_check_resume_pin(pin, pin - S3C2410_GPF0);
+ s3c_pm_check_resume_pin(pin, pin - S3C2410_GPF0);
}
for (pin = S3C2410_GPG0; pin <= S3C2410_GPG7; pin++) {
- s3c2410_pm_check_resume_pin(pin, (pin - S3C2410_GPG0)+8);
+ s3c_pm_check_resume_pin(pin, (pin - S3C2410_GPG0)+8);
}
}
-/* offsets for CON/DAT/UP registers */
-
-#define OFFS_CON (S3C2410_GPACON - S3C2410_GPACON)
-#define OFFS_DAT (S3C2410_GPADAT - S3C2410_GPACON)
-#define OFFS_UP (S3C2410_GPBUP - S3C2410_GPBCON)
-
-/* s3c2410_pm_save_gpios()
- *
- * Save the state of the GPIOs
- */
-
-static void s3c2410_pm_save_gpios(void)
-{
- struct gpio_sleep *gps = gpio_save;
- unsigned int gpio;
-
- for (gpio = 0; gpio < ARRAY_SIZE(gpio_save); gpio++, gps++) {
- void __iomem *base = gps->base;
-
- gps->gpcon = __raw_readl(base + OFFS_CON);
- gps->gpdat = __raw_readl(base + OFFS_DAT);
-
- if (gpio > 0)
- gps->gpup = __raw_readl(base + OFFS_UP);
-
- }
-}
-
-/* Test whether the given masked+shifted bits of an GPIO configuration
- * are one of the SFN (special function) modes. */
-
-static inline int is_sfn(unsigned long con)
-{
- return (con == 2 || con == 3);
-}
-
-/* Test if the given masked+shifted GPIO configuration is an input */
-
-static inline int is_in(unsigned long con)
-{
- return con == 0;
-}
-
-/* Test if the given masked+shifted GPIO configuration is an output */
-
-static inline int is_out(unsigned long con)
+void s3c_pm_restore_core(void)
{
- return con == 1;
+ s3c_pm_do_restore_core(core_save, ARRAY_SIZE(core_save));
+ s3c_pm_do_restore(misc_save, ARRAY_SIZE(misc_save));
}
-/* s3c2410_pm_restore_gpio()
- *
- * Restore one of the GPIO banks that was saved during suspend. This is
- * not as simple as once thought, due to the possibility of glitches
- * from the order that the CON and DAT registers are set in.
- *
- * The three states the pin can be are {IN,OUT,SFN} which gives us 9
- * combinations of changes to check. Three of these, if the pin stays
- * in the same configuration can be discounted. This leaves us with
- * the following:
- *
- * { IN => OUT } Change DAT first
- * { IN => SFN } Change CON first
- * { OUT => SFN } Change CON first, so new data will not glitch
- * { OUT => IN } Change CON first, so new data will not glitch
- * { SFN => IN } Change CON first
- * { SFN => OUT } Change DAT first, so new data will not glitch [1]
- *
- * We do not currently deal with the UP registers as these control
- * weak resistors, so a small delay in change should not need to bring
- * these into the calculations.
- *
- * [1] this assumes that writing to a pin DAT whilst in SFN will set the
- * state for when it is next output.
- */
-
-static void s3c2410_pm_restore_gpio(int index, struct gpio_sleep *gps)
+void s3c_pm_save_core(void)
{
- void __iomem *base = gps->base;
- unsigned long gps_gpcon = gps->gpcon;
- unsigned long gps_gpdat = gps->gpdat;
- unsigned long old_gpcon;
- unsigned long old_gpdat;
- unsigned long old_gpup = 0x0;
- unsigned long gpcon;
- int nr;
-
- old_gpcon = __raw_readl(base + OFFS_CON);
- old_gpdat = __raw_readl(base + OFFS_DAT);
-
- if (base == S3C2410_GPACON) {
- /* GPACON only has one bit per control / data and no PULLUPs.
- * GPACON[x] = 0 => Output, 1 => SFN */
-
- /* first set all SFN bits to SFN */
-
- gpcon = old_gpcon | gps->gpcon;
- __raw_writel(gpcon, base + OFFS_CON);
-
- /* now set all the other bits */
-
- __raw_writel(gps_gpdat, base + OFFS_DAT);
- __raw_writel(gps_gpcon, base + OFFS_CON);
- } else {
- unsigned long old, new, mask;
- unsigned long change_mask = 0x0;
-
- old_gpup = __raw_readl(base + OFFS_UP);
-
- /* Create a change_mask of all the items that need to have
- * their CON value changed before their DAT value, so that
- * we minimise the work between the two settings.
- */
-
- for (nr = 0, mask = 0x03; nr < 32; nr += 2, mask <<= 2) {
- old = (old_gpcon & mask) >> nr;
- new = (gps_gpcon & mask) >> nr;
-
- /* If there is no change, then skip */
-
- if (old == new)
- continue;
-
- /* If both are special function, then skip */
-
- if (is_sfn(old) && is_sfn(new))
- continue;
-
- /* Change is IN => OUT, do not change now */
-
- if (is_in(old) && is_out(new))
- continue;
-
- /* Change is SFN => OUT, do not change now */
-
- if (is_sfn(old) && is_out(new))
- continue;
-
- /* We should now be at the case of IN=>SFN,
- * OUT=>SFN, OUT=>IN, SFN=>IN. */
-
- change_mask |= mask;
- }
-
- /* Write the new CON settings */
-
- gpcon = old_gpcon & ~change_mask;
- gpcon |= gps_gpcon & change_mask;
-
- __raw_writel(gpcon, base + OFFS_CON);
-
- /* Now change any items that require DAT,CON */
-
- __raw_writel(gps_gpdat, base + OFFS_DAT);
- __raw_writel(gps_gpcon, base + OFFS_CON);
- __raw_writel(gps->gpup, base + OFFS_UP);
- }
-
- DBG("GPIO[%d] CON %08lx => %08lx, DAT %08lx => %08lx\n",
- index, old_gpcon, gps_gpcon, old_gpdat, gps_gpdat);
-}
-
-
-/** s3c2410_pm_restore_gpios()
- *
- * Restore the state of the GPIOs
- */
-
-static void s3c2410_pm_restore_gpios(void)
-{
- struct gpio_sleep *gps = gpio_save;
- int gpio;
-
- for (gpio = 0; gpio < ARRAY_SIZE(gpio_save); gpio++, gps++) {
- s3c2410_pm_restore_gpio(gpio, gps);
- }
-}
-
-void (*pm_cpu_prep)(void);
-void (*pm_cpu_sleep)(void);
-
-#define any_allowed(mask, allow) (((mask) & (allow)) != (allow))
-
-/* s3c2410_pm_enter
- *
- * central control for sleep/resume process
-*/
-
-static int s3c2410_pm_enter(suspend_state_t state)
-{
- unsigned long regs_save[16];
-
- /* ensure the debug is initialised (if enabled) */
-
- s3c2410_pm_debug_init();
-
- DBG("s3c2410_pm_enter(%d)\n", state);
-
- if (pm_cpu_prep == NULL || pm_cpu_sleep == NULL) {
- printk(KERN_ERR PFX "error: no cpu sleep functions set\n");
- return -EINVAL;
- }
-
- /* check if we have anything to wake-up with... bad things seem
- * to happen if you suspend with no wakeup (system will often
- * require a full power-cycle)
- */
-
- if (!any_allowed(s3c_irqwake_intmask, s3c_irqwake_intallow) &&
- !any_allowed(s3c_irqwake_eintmask, s3c_irqwake_eintallow)) {
- printk(KERN_ERR PFX "No sources enabled for wake-up!\n");
- printk(KERN_ERR PFX "Aborting sleep\n");
- return -EINVAL;
- }
-
- /* prepare check area if configured */
-
- s3c2410_pm_check_prepare();
-
- /* store the physical address of the register recovery block */
-
- s3c2410_sleep_save_phys = virt_to_phys(regs_save);
-
- DBG("s3c2410_sleep_save_phys=0x%08lx\n", s3c2410_sleep_save_phys);
-
- /* save all necessary core registers not covered by the drivers */
-
- s3c2410_pm_save_gpios();
- s3c2410_pm_do_save(misc_save, ARRAY_SIZE(misc_save));
- s3c2410_pm_do_save(core_save, ARRAY_SIZE(core_save));
- s3c2410_pm_do_save(uart_save, ARRAY_SIZE(uart_save));
-
- /* set the irq configuration for wake */
-
- s3c2410_pm_configure_extint();
-
- DBG("sleep: irq wakeup masks: %08lx,%08lx\n",
- s3c_irqwake_intmask, s3c_irqwake_eintmask);
-
- __raw_writel(s3c_irqwake_intmask, S3C2410_INTMSK);
- __raw_writel(s3c_irqwake_eintmask, S3C2410_EINTMASK);
-
- /* ack any outstanding external interrupts before we go to sleep */
-
- __raw_writel(__raw_readl(S3C2410_EINTPEND), S3C2410_EINTPEND);
- __raw_writel(__raw_readl(S3C2410_INTPND), S3C2410_INTPND);
- __raw_writel(__raw_readl(S3C2410_SRCPND), S3C2410_SRCPND);
-
- /* call cpu specific preparation */
-
- pm_cpu_prep();
-
- /* flush cache back to ram */
-
- flush_cache_all();
-
- s3c2410_pm_check_store();
-
- /* send the cpu to sleep... */
-
- __raw_writel(0x00, S3C2410_CLKCON); /* turn off clocks over sleep */
-
- /* s3c2410_cpu_save will also act as our return point from when
- * we resume as it saves its own register state, so use the return
- * code to differentiate return from save and return from sleep */
-
- if (s3c2410_cpu_save(regs_save) == 0) {
- flush_cache_all();
- pm_cpu_sleep();
- }
-
- /* restore the cpu state */
-
- cpu_init();
-
- /* restore the system state */
-
- s3c2410_pm_do_restore_core(core_save, ARRAY_SIZE(core_save));
- s3c2410_pm_do_restore(misc_save, ARRAY_SIZE(misc_save));
- s3c2410_pm_do_restore(uart_save, ARRAY_SIZE(uart_save));
- s3c2410_pm_restore_gpios();
-
- s3c2410_pm_debug_init();
-
- /* check what irq (if any) restored the system */
-
- DBG("post sleep: IRQs 0x%08x, 0x%08x\n",
- __raw_readl(S3C2410_SRCPND),
- __raw_readl(S3C2410_EINTPEND));
-
- s3c2410_pm_show_resume_irqs(IRQ_EINT0, __raw_readl(S3C2410_SRCPND),
- s3c_irqwake_intmask);
-
- s3c2410_pm_show_resume_irqs(IRQ_EINT4-4, __raw_readl(S3C2410_EINTPEND),
- s3c_irqwake_eintmask);
-
- DBG("post sleep, preparing to return\n");
-
- s3c2410_pm_check_restore();
-
- /* ok, let's return from sleep */
-
- DBG("S3C2410 PM Resume (post-restore)\n");
- return 0;
+ s3c_pm_do_save(misc_save, ARRAY_SIZE(misc_save));
+ s3c_pm_do_save(core_save, ARRAY_SIZE(core_save));
}
+<<<<<<< current
+=======
static int s3c2410_pm_begin(suspend_state_t state)
{
int ret = 0;
@@ -826,3 +177,4 @@ int __init s3c2410_pm_init(void)
suspend_set_ops(&s3c2410_pm_ops);
return 0;
}
+>>>>>>> patched
diff --git a/arch/arm/plat-s3c24xx/s3c244x.c b/arch/arm/plat-s3c24xx/s3c244x.c
index df78a15a80b..0731b239132 100644
--- a/arch/arm/plat-s3c24xx/s3c244x.c
+++ b/arch/arm/plat-s3c24xx/s3c244x.c
@@ -148,13 +148,13 @@ static struct sleep_save s3c244x_sleep[] = {
static int s3c244x_suspend(struct sys_device *dev, pm_message_t state)
{
- s3c2410_pm_do_save(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
+ s3c_pm_do_save(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
return 0;
}
static int s3c244x_resume(struct sys_device *dev)
{
- s3c2410_pm_do_restore(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
+ s3c_pm_do_restore(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
return 0;
}
diff --git a/arch/arm/plat-s3c24xx/sleep.S b/arch/arm/plat-s3c24xx/sleep.S
index 76594b21280..ecb830be67d 100644
--- a/arch/arm/plat-s3c24xx/sleep.S
+++ b/arch/arm/plat-s3c24xx/sleep.S
@@ -41,7 +41,7 @@
.text
- /* s3c2410_cpu_save
+ /* s3c_cpu_save
*
* save enough of the CPU state to allow us to re-start
* pm.c code. as we store items like the sp/lr, we will
@@ -59,7 +59,7 @@
* 1 => resumed from sleep
*/
-ENTRY(s3c2410_cpu_save)
+ENTRY(s3c_cpu_save)
stmfd sp!, { r4 - r12, lr }
@@ store co-processor registers
@@ -84,7 +84,7 @@ resume_with_mmu:
.ltorg
@@ the next bits sit in the .data segment, even though they
- @@ happen to be code... the s3c2410_sleep_save_phys needs to be
+ @@ happen to be code... the s3c_sleep_save_phys needs to be
@@ accessed by the resume code before it can restore the MMU.
@@ This means that the variable has to be close enough for the
@@ code to read it... since the .text segment needs to be RO,
@@ -92,19 +92,19 @@ resume_with_mmu:
.data
- .global s3c2410_sleep_save_phys
-s3c2410_sleep_save_phys:
+ .global s3c_sleep_save_phys
+s3c_sleep_save_phys:
.word 0
/* sleep magic, to allow the bootloader to check for an valid
* image to resume to. Must be the first word before the
- * s3c2410_cpu_resume entry.
+ * s3c_cpu_resume entry.
*/
.word 0x2bedf00d
- /* s3c2410_cpu_resume
+ /* s3c_cpu_resume
*
* resume code entry for bootloader to call
*
@@ -113,7 +113,7 @@ s3c2410_sleep_save_phys:
* must not write to the code segment (code is read-only)
*/
-ENTRY(s3c2410_cpu_resume)
+ENTRY(s3c_cpu_resume)
mov r0, #PSR_I_BIT | PSR_F_BIT | SVC_MODE
msr cpsr_c, r0
@@ -145,7 +145,7 @@ ENTRY(s3c2410_cpu_resume)
mcr p15, 0, r1, c8, c7, 0 @@ invalidate I & D TLBs
mcr p15, 0, r1, c7, c7, 0 @@ invalidate I & D caches
- ldr r0, s3c2410_sleep_save_phys @ address of restore block
+ ldr r0, s3c_sleep_save_phys @ address of restore block
ldmia r0, { r4 - r13 }
mcr p15, 0, r4, c13, c0, 0 @ PID
diff --git a/arch/arm/plat-s3c64xx/Makefile b/arch/arm/plat-s3c64xx/Makefile
index 2e6d79bf8f3..12ac7a50ab7 100644
--- a/arch/arm/plat-s3c64xx/Makefile
+++ b/arch/arm/plat-s3c64xx/Makefile
@@ -24,6 +24,12 @@ obj-y += gpiolib.o
obj-$(CONFIG_CPU_S3C6400_INIT) += s3c6400-init.o
obj-$(CONFIG_CPU_S3C6400_CLOCK) += s3c6400-clock.o
+# PM support
+
+obj-$(CONFIG_PM) += pm.o
+obj-$(CONFIG_PM) += sleep.o
+obj-$(CONFIG_PM) += irq-pm.o
+
# Device setup
obj-$(CONFIG_S3C64XX_SETUP_I2C0) += setup-i2c0.o
diff --git a/arch/arm/plat-s3c64xx/cpu.c b/arch/arm/plat-s3c64xx/cpu.c
index 36182fcfaeb..278a04d5c57 100644
--- a/arch/arm/plat-s3c64xx/cpu.c
+++ b/arch/arm/plat-s3c64xx/cpu.c
@@ -16,6 +16,7 @@
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
+#include <linux/sysdev.h>
#include <linux/serial_core.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
@@ -100,6 +101,16 @@ static struct map_desc s3c_iodesc[] __initdata = {
},
};
+
+struct sysdev_class s3c64xx_sysclass = {
+ .name = "s3c64xx-core",
+};
+
+static struct sys_device s3c64xx_sysdev = {
+ .cls = &s3c64xx_sysclass,
+};
+
+
/* read cpu identification code */
void __init s3c64xx_init_io(struct map_desc *mach_desc, int size)
@@ -113,3 +124,11 @@ void __init s3c64xx_init_io(struct map_desc *mach_desc, int size)
idcode = __raw_readl(S3C_VA_SYS + 0x118);
s3c_init_cpu(idcode, cpu_ids, ARRAY_SIZE(cpu_ids));
}
+
+static __init int s3c64xx_sysdev_init(void)
+{
+ sysdev_class_register(&s3c64xx_sysclass);
+ return sysdev_register(&s3c64xx_sysdev);
+}
+
+core_initcall(s3c64xx_sysdev_init);
diff --git a/arch/arm/plat-s3c64xx/gpiolib.c b/arch/arm/plat-s3c64xx/gpiolib.c
index cc62941d7b5..09bd681ae73 100644
--- a/arch/arm/plat-s3c64xx/gpiolib.c
+++ b/arch/arm/plat-s3c64xx/gpiolib.c
@@ -385,12 +385,19 @@ static __init void s3c64xx_gpiolib_add_4bit(struct s3c_gpio_chip *chip)
{
chip->chip.direction_input = s3c64xx_gpiolib_4bit_input;
chip->chip.direction_output = s3c64xx_gpiolib_4bit_output;
+ chip->pm = __gpio_pm(&s3c_gpio_pm_4bit);
}
static __init void s3c64xx_gpiolib_add_4bit2(struct s3c_gpio_chip *chip)
{
chip->chip.direction_input = s3c64xx_gpiolib_4bit2_input;
chip->chip.direction_output = s3c64xx_gpiolib_4bit2_output;
+ chip->pm = __gpio_pm(&s3c_gpio_pm_4bit);
+}
+
+static __init void s3c64xx_gpiolib_add_2bit(struct s3c_gpio_chip *chip)
+{
+ chip->pm = __gpio_pm(&s3c_gpio_pm_2bit);
}
static __init void s3c64xx_gpiolib_add(struct s3c_gpio_chip *chips,
@@ -412,7 +419,8 @@ static __init int s3c64xx_gpiolib_init(void)
s3c64xx_gpiolib_add(gpio_4bit2, ARRAY_SIZE(gpio_4bit2),
s3c64xx_gpiolib_add_4bit2);
- s3c64xx_gpiolib_add(gpio_2bit, ARRAY_SIZE(gpio_2bit), NULL);
+ s3c64xx_gpiolib_add(gpio_2bit, ARRAY_SIZE(gpio_2bit),
+ s3c64xx_gpiolib_add_2bit);
return 0;
}
diff --git a/arch/arm/plat-s3c64xx/include/plat/irqs.h b/arch/arm/plat-s3c64xx/include/plat/irqs.h
index 02e8dd4c97d..b85085295f0 100644
--- a/arch/arm/plat-s3c64xx/include/plat/irqs.h
+++ b/arch/arm/plat-s3c64xx/include/plat/irqs.h
@@ -157,6 +157,7 @@
#define S3C_EINT(x) ((x) + S3C_IRQ_EINT_BASE)
#define IRQ_EINT(x) S3C_EINT(x)
+#define IRQ_EINT_BIT(x) ((x) - S3C_EINT(0))
/* Next the external interrupt groups. These are similar to the IRQ_EINT(x)
* that they are sourced from the GPIO pins but with a different scheme for
diff --git a/arch/arm/plat-s3c64xx/include/plat/pm-core.h b/arch/arm/plat-s3c64xx/include/plat/pm-core.h
new file mode 100644
index 00000000000..8906c9fd443
--- /dev/null
+++ b/arch/arm/plat-s3c64xx/include/plat/pm-core.h
@@ -0,0 +1,108 @@
+/* linux/arch/arm/plat-s3c64xx/include/plat/pm-core.h
+ *
+ * Copyright 2008 Openmoko, Inc.
+ * Copyright 2008 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ * http://armlinux.simtec.co.uk/
+ *
+ * S3C64XX - PM core support for arch/arm/plat-s3c/pm.c
+ *
+ * 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 <plat/regs-gpio.h>
+
+static inline void s3c_pm_debug_init_uart(void)
+{
+ u32 tmp = __raw_readl(S3C_PCLK_GATE);
+
+ /* As a note, since the S3C64XX UARTs generally have multiple
+ * clock sources, we simply enable PCLK at the momemnt and hope
+ * that the resume settings for the UART are suitable for the
+ * use with PCLK.
+ */
+
+ tmp |= S3C_CLKCON_PCLK_UART0;
+ tmp |= S3C_CLKCON_PCLK_UART1;
+ tmp |= S3C_CLKCON_PCLK_UART2;
+ tmp |= S3C_CLKCON_PCLK_UART3;
+
+ __raw_writel(tmp, S3C_PCLK_GATE);
+ udelay(10);
+}
+
+static inline void s3c_pm_arch_clear_vic(void __iomem *base)
+{
+ __raw_writel(~0, base + VIC_INT_ENABLE_CLEAR);
+ __raw_writel(~0, base + VIC_INT_SOFT_CLEAR);
+}
+
+static inline void s3c_pm_arch_prepare_irqs(void)
+{
+ /* shutdown the VICs */
+ s3c_pm_arch_clear_vic(S3C_VA_VIC0);
+ s3c_pm_arch_clear_vic(S3C_VA_VIC1);
+
+ /* clear any pending EINT0 interrupts */
+ __raw_writel(__raw_readl(S3C64XX_EINT0PEND), S3C64XX_EINT0PEND);
+}
+
+static inline void s3c_pm_arch_stop_clocks(void)
+{
+}
+
+static inline void s3c_pm_arch_show_resume_irqs(void)
+{
+}
+
+/* make these defines, we currently do not have any need to change
+ * the IRQ wake controls depending on the CPU we are running on */
+
+#define s3c_irqwake_eintallow ((1 << 28) - 1)
+#define s3c_irqwake_intallow (0)
+
+static inline void s3c_pm_arch_update_uart(void __iomem *regs,
+ struct pm_uart_save *save)
+{
+ u32 ucon = __raw_readl(regs + S3C2410_UCON);
+ u32 ucon_clk = ucon & S3C6400_UCON_CLKMASK;
+ u32 save_clk = save->ucon & S3C6400_UCON_CLKMASK;
+ u32 new_ucon;
+
+ /* S3C64XX UART blocks only support level interrupts, so ensure that
+ * when we restore unused UART blocks we force the level interrupt
+ * settigs. */
+ save->ucon |= S3C2410_UCON_TXILEVEL | S3C2410_UCON_RXILEVEL;
+
+ /* We have a constraint on changing the clock type of the UART
+ * between UCLKx and PCLK, so ensure that when we restore UCON
+ * that the CLK field is correctly modified if the bootloader
+ * has changed anything.
+ */
+ if (ucon_clk != save_clk) {
+ new_ucon = save->ucon;
+ new_ucon &= ~S3C6400_UCON_CLKMASK;
+
+ /* check for illegal change of UCLK, and fixup */
+
+ if (ucon_clk == S3C6400_UCON_UCLK0 &&
+ save_clk == S3C6400_UCON_PCLK2)
+ new_ucon |= S3C6400_UCON_PCLK;
+
+ if (ucon_clk == S3C6400_UCON_UCLK1 &&
+ save_clk == S3C6400_UCON_PCLK)
+ new_ucon |= S3C6400_UCON_PCLK2;
+
+ if (ucon_clk == S3C6400_UCON_PCLK &&
+ save_clk == S3C6400_UCON_PCLK2)
+ new_ucon |= S3C6400_UCON_PCLK;
+
+ if (ucon_clk == S3C6400_UCON_PCLK2 &&
+ save_clk == S3C6400_UCON_PCLK)
+ new_ucon |= S3C6400_UCON_PCLK2;
+
+ save->ucon = new_ucon;
+ }
+}
diff --git a/arch/arm/plat-s3c64xx/include/plat/regs-clock.h b/arch/arm/plat-s3c64xx/include/plat/regs-clock.h
index b1082c16324..52836d41e33 100644
--- a/arch/arm/plat-s3c64xx/include/plat/regs-clock.h
+++ b/arch/arm/plat-s3c64xx/include/plat/regs-clock.h
@@ -32,6 +32,7 @@
#define S3C_HCLK_GATE S3C_CLKREG(0x30)
#define S3C_PCLK_GATE S3C_CLKREG(0x34)
#define S3C_SCLK_GATE S3C_CLKREG(0x38)
+#define S3C_MEM0_GATE S3C_CLKREG(0x3C)
/* CLKDIV0 */
#define S3C6400_CLKDIV0_MFC_MASK (0xf << 28)
diff --git a/arch/arm/plat-s3c64xx/include/plat/regs-gpio.h b/arch/arm/plat-s3c64xx/include/plat/regs-gpio.h
index 75b873d8280..17944803a32 100644
--- a/arch/arm/plat-s3c64xx/include/plat/regs-gpio.h
+++ b/arch/arm/plat-s3c64xx/include/plat/regs-gpio.h
@@ -13,23 +13,90 @@
/* Base addresses for each of the banks */
-#define S3C64XX_GPA_BASE (S3C64XX_VA_GPIO + 0x0000)
-#define S3C64XX_GPB_BASE (S3C64XX_VA_GPIO + 0x0020)
-#define S3C64XX_GPC_BASE (S3C64XX_VA_GPIO + 0x0040)
-#define S3C64XX_GPD_BASE (S3C64XX_VA_GPIO + 0x0060)
-#define S3C64XX_GPE_BASE (S3C64XX_VA_GPIO + 0x0080)
-#define S3C64XX_GPF_BASE (S3C64XX_VA_GPIO + 0x00A0)
-#define S3C64XX_GPG_BASE (S3C64XX_VA_GPIO + 0x00C0)
-#define S3C64XX_GPH_BASE (S3C64XX_VA_GPIO + 0x00E0)
-#define S3C64XX_GPI_BASE (S3C64XX_VA_GPIO + 0x0100)
-#define S3C64XX_GPJ_BASE (S3C64XX_VA_GPIO + 0x0120)
-#define S3C64XX_GPK_BASE (S3C64XX_VA_GPIO + 0x0800)
-#define S3C64XX_GPL_BASE (S3C64XX_VA_GPIO + 0x0810)
-#define S3C64XX_GPM_BASE (S3C64XX_VA_GPIO + 0x0820)
-#define S3C64XX_GPN_BASE (S3C64XX_VA_GPIO + 0x0830)
-#define S3C64XX_GPO_BASE (S3C64XX_VA_GPIO + 0x0140)
-#define S3C64XX_GPP_BASE (S3C64XX_VA_GPIO + 0x0160)
-#define S3C64XX_GPQ_BASE (S3C64XX_VA_GPIO + 0x0180)
+#define S3C64XX_GPIOREG(reg) (S3C64XX_VA_GPIO + (reg))
+
+#define S3C64XX_GPA_BASE S3C64XX_GPIOREG(0x0000)
+#define S3C64XX_GPB_BASE S3C64XX_GPIOREG(0x0020)
+#define S3C64XX_GPC_BASE S3C64XX_GPIOREG(0x0040)
+#define S3C64XX_GPD_BASE S3C64XX_GPIOREG(0x0060)
+#define S3C64XX_GPE_BASE S3C64XX_GPIOREG(0x0080)
+#define S3C64XX_GPF_BASE S3C64XX_GPIOREG(0x00A0)
+#define S3C64XX_GPG_BASE S3C64XX_GPIOREG(0x00C0)
+#define S3C64XX_GPH_BASE S3C64XX_GPIOREG(0x00E0)
+#define S3C64XX_GPI_BASE S3C64XX_GPIOREG(0x0100)
+#define S3C64XX_GPJ_BASE S3C64XX_GPIOREG(0x0120)
+#define S3C64XX_GPK_BASE S3C64XX_GPIOREG(0x0800)
+#define S3C64XX_GPL_BASE S3C64XX_GPIOREG(0x0810)
+#define S3C64XX_GPM_BASE S3C64XX_GPIOREG(0x0820)
+#define S3C64XX_GPN_BASE S3C64XX_GPIOREG(0x0830)
+#define S3C64XX_GPO_BASE S3C64XX_GPIOREG(0x0140)
+#define S3C64XX_GPP_BASE S3C64XX_GPIOREG(0x0160)
+#define S3C64XX_GPQ_BASE S3C64XX_GPIOREG(0x0180)
+
+/* External interrupt registers */
+
+#define S3C64XX_EINT12CON S3C64XX_GPIOREG(0x200)
+#define S3C64XX_EINT34CON S3C64XX_GPIOREG(0x204)
+#define S3C64XX_EINT56CON S3C64XX_GPIOREG(0x208)
+#define S3C64XX_EINT78CON S3C64XX_GPIOREG(0x20C)
+#define S3C64XX_EINT9CON S3C64XX_GPIOREG(0x210)
+
+#define S3C64XX_EINT12FLTCON S3C64XX_GPIOREG(0x220)
+#define S3C64XX_EINT34FLTCON S3C64XX_GPIOREG(0x224)
+#define S3C64XX_EINT56FLTCON S3C64XX_GPIOREG(0x228)
+#define S3C64XX_EINT78FLTCON S3C64XX_GPIOREG(0x22C)
+#define S3C64XX_EINT9FLTCON S3C64XX_GPIOREG(0x230)
+
+#define S3C64XX_EINT12MASK S3C64XX_GPIOREG(0x240)
+#define S3C64XX_EINT34MASK S3C64XX_GPIOREG(0x244)
+#define S3C64XX_EINT56MASK S3C64XX_GPIOREG(0x248)
+#define S3C64XX_EINT78MASK S3C64XX_GPIOREG(0x24C)
+#define S3C64XX_EINT9MASK S3C64XX_GPIOREG(0x250)
+
+#define S3C64XX_EINT12PEND S3C64XX_GPIOREG(0x260)
+#define S3C64XX_EINT34PEND S3C64XX_GPIOREG(0x264)
+#define S3C64XX_EINT56PEND S3C64XX_GPIOREG(0x268)
+#define S3C64XX_EINT78PEND S3C64XX_GPIOREG(0x26C)
+#define S3C64XX_EINT9PEND S3C64XX_GPIOREG(0x270)
+
+#define S3C64XX_PRIORITY S3C64XX_GPIOREG(0x280)
+#define S3C64XX_PRIORITY_ARB(x) (1 << (x))
+
+#define S3C64XX_SERVICE S3C64XX_GPIOREG(0x284)
+#define S3C64XX_SERVICEPEND S3C64XX_GPIOREG(0x288)
+
+#define S3C64XX_EINT0CON0 S3C64XX_GPIOREG(0x900)
+#define S3C64XX_EINT0CON1 S3C64XX_GPIOREG(0x904)
+#define S3C64XX_EINT0FLTCON0 S3C64XX_GPIOREG(0x910)
+#define S3C64XX_EINT0FLTCON1 S3C64XX_GPIOREG(0x914)
+#define S3C64XX_EINT0FLTCON2 S3C64XX_GPIOREG(0x918)
+#define S3C64XX_EINT0FLTCON3 S3C64XX_GPIOREG(0x91C)
+
+#define S3C64XX_EINT0MASK S3C64XX_GPIOREG(0x920)
+#define S3C64XX_EINT0PEND S3C64XX_GPIOREG(0x924)
+
+/* GPIO sleep configuration */
+
+#define S3C64XX_SPCONSLP S3C64XX_GPIOREG(0x880)
+
+#define S3C64XX_SPCONSLP_TDO_PULLDOWN (1 << 14)
+#define S3C64XX_SPCONSLP_CKE1INIT (1 << 5)
+
+#define S3C64XX_SPCONSLP_RSTOUT_MASK (0x3 << 12)
+#define S3C64XX_SPCONSLP_RSTOUT_OUT0 (0x0 << 12)
+#define S3C64XX_SPCONSLP_RSTOUT_OUT1 (0x1 << 12)
+#define S3C64XX_SPCONSLP_RSTOUT_HIZ (0x2 << 12)
+
+#define S3C64XX_SPCONSLP_KPCOL_MASK (0x3 << 0)
+#define S3C64XX_SPCONSLP_KPCOL_OUT0 (0x0 << 0)
+#define S3C64XX_SPCONSLP_KPCOL_OUT1 (0x1 << 0)
+#define S3C64XX_SPCONSLP_KPCOL_INP (0x2 << 0)
+
+
+#define S3C64XX_SLPEN S3C64XX_GPIOREG(0x930)
+
+#define S3C64XX_SLPEN_USE_xSLP (1 << 0)
+#define S3C64XX_SLPEN_CFG_BYSLPEN (1 << 1)
#endif /* __ASM_PLAT_S3C64XX_REGS_GPIO_H */
diff --git a/arch/arm/plat-s3c64xx/include/plat/regs-sys.h b/arch/arm/plat-s3c64xx/include/plat/regs-sys.h
index d8ed8291709..69b78d9f83b 100644
--- a/arch/arm/plat-s3c64xx/include/plat/regs-sys.h
+++ b/arch/arm/plat-s3c64xx/include/plat/regs-sys.h
@@ -17,6 +17,10 @@
#define S3C_SYSREG(x) (S3C_VA_SYS + (x))
+#define S3C64XX_AHB_CON0 S3C_SYSREG(0x100)
+#define S3C64XX_AHB_CON1 S3C_SYSREG(0x104)
+#define S3C64XX_AHB_CON2 S3C_SYSREG(0x108)
+
#define S3C64XX_OTHERS S3C_SYSREG(0x900)
#define S3C64XX_OTHERS_USBMASK (1 << 16)
diff --git a/arch/arm/plat-s3c64xx/include/plat/regs-syscon-power.h b/arch/arm/plat-s3c64xx/include/plat/regs-syscon-power.h
new file mode 100644
index 00000000000..1b155fcb03b
--- /dev/null
+++ b/arch/arm/plat-s3c64xx/include/plat/regs-syscon-power.h
@@ -0,0 +1,113 @@
+/* arch/arm/plat-s3c64xx/include/plat/regs-syscon-power.h
+ *
+ * Copyright 2008 Openmoko, Inc.
+ * Copyright 2008 Simtec Electronics
+ * http://armlinux.simtec.co.uk/
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * S3C64XX - syscon power and sleep control registers
+ *
+ * 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.
+*/
+
+#ifndef __PLAT_S3C64XX_REGS_SYSCON_POWER_H
+#define __PLAT_S3C64XX_REGS_SYSCON_POWER_H __FILE__
+
+#define S3C64XX_PWR_CFG S3C_SYSREG(0x804)
+
+#define S3C64XX_PWRCFG_OSC_OTG_DISABLE (1 << 17)
+#define S3C64XX_PWRCFG_MMC2_DISABLE (1 << 16)
+#define S3C64XX_PWRCFG_MMC1_DISABLE (1 << 15)
+#define S3C64XX_PWRCFG_MMC0_DISABLE (1 << 14)
+#define S3C64XX_PWRCFG_HSI_DISABLE (1 << 13)
+#define S3C64XX_PWRCFG_TS_DISABLE (1 << 12)
+#define S3C64XX_PWRCFG_RTC_TICK_DISABLE (1 << 11)
+#define S3C64XX_PWRCFG_RTC_ALARM_DISABLE (1 << 10)
+#define S3C64XX_PWRCFG_MSM_DISABLE (1 << 9)
+#define S3C64XX_PWRCFG_KEY_DISABLE (1 << 8)
+#define S3C64XX_PWRCFG_BATF_DISABLE (1 << 7)
+
+#define S3C64XX_PWRCFG_CFG_WFI_MASK (0x3 << 5)
+#define S3C64XX_PWRCFG_CFG_WFI_SHIFT (5)
+#define S3C64XX_PWRCFG_CFG_WFI_IGNORE (0x0 << 5)
+#define S3C64XX_PWRCFG_CFG_WFI_IDLE (0x1 << 5)
+#define S3C64XX_PWRCFG_CFG_WFI_STOP (0x2 << 5)
+#define S3C64XX_PWRCFG_CFG_WFI_SLEEP (0x3 << 5)
+
+#define S3C64XX_PWRCFG_CFG_BATFLT_MASK (0x3 << 3)
+#define S3C64XX_PWRCFG_CFG_BATFLT_SHIFT (3)
+#define S3C64XX_PWRCFG_CFG_BATFLT_IGNORE (0x0 << 3)
+#define S3C64XX_PWRCFG_CFG_BATFLT_IRQ (0x1 << 3)
+#define S3C64XX_PWRCFG_CFG_BATFLT_SLEEP (0x3 << 3)
+
+#define S3C64XX_PWRCFG_CFG_BAT_WAKE (1 << 2)
+#define S3C64XX_PWRCFG_OSC27_EN (1 << 0)
+
+#define S3C64XX_EINT_MASK S3C_SYSREG(0x808)
+
+#define S3C64XX_NORMAL_CFG S3C_SYSREG(0x810)
+
+#define S3C64XX_NORMALCFG_IROM_ON (1 << 30)
+#define S3C64XX_NORMALCFG_DOMAIN_ETM_ON (1 << 16)
+#define S3C64XX_NORMALCFG_DOMAIN_S_ON (1 << 15)
+#define S3C64XX_NORMALCFG_DOMAIN_F_ON (1 << 14)
+#define S3C64XX_NORMALCFG_DOMAIN_P_ON (1 << 13)
+#define S3C64XX_NORMALCFG_DOMAIN_I_ON (1 << 12)
+#define S3C64XX_NORMALCFG_DOMAIN_G_ON (1 << 10)
+#define S3C64XX_NORMALCFG_DOMAIN_V_ON (1 << 9)
+
+#define S3C64XX_STOP_CFG S3C_SYSREG(0x814)
+
+#define S3C64XX_STOPCFG_MEMORY_ARM_ON (1 << 29)
+#define S3C64XX_STOPCFG_TOP_MEMORY_ON (1 << 20)
+#define S3C64XX_STOPCFG_ARM_LOGIC_ON (1 << 17)
+#define S3C64XX_STOPCFG_TOP_LOGIC_ON (1 << 8)
+#define S3C64XX_STOPCFG_OSC_EN (1 << 0)
+
+#define S3C64XX_SLEEP_CFG S3C_SYSREG(0x818)
+
+#define S3C64XX_SLEEPCFG_OSC_EN (1 << 0)
+
+#define S3C64XX_STOP_MEM_CFG S3C_SYSREG(0x81c)
+
+#define S3C64XX_STOPMEMCFG_MODEMIF_RETAIN (1 << 6)
+#define S3C64XX_STOPMEMCFG_HOSTIF_RETAIN (1 << 5)
+#define S3C64XX_STOPMEMCFG_OTG_RETAIN (1 << 4)
+#define S3C64XX_STOPMEMCFG_HSMCC_RETAIN (1 << 3)
+#define S3C64XX_STOPMEMCFG_IROM_RETAIN (1 << 2)
+#define S3C64XX_STOPMEMCFG_IRDA_RETAIN (1 << 1)
+#define S3C64XX_STOPMEMCFG_NFCON_RETAIN (1 << 0)
+
+#define S3C64XX_WAKEUP_STAT S3C_SYSREG(0x908)
+
+#define S3C64XX_WAKEUPSTAT_MMC2 (1 << 11)
+#define S3C64XX_WAKEUPSTAT_MMC1 (1 << 10)
+#define S3C64XX_WAKEUPSTAT_MMC0 (1 << 9)
+#define S3C64XX_WAKEUPSTAT_HSI (1 << 8)
+#define S3C64XX_WAKEUPSTAT_BATFLT (1 << 6)
+#define S3C64XX_WAKEUPSTAT_MSM (1 << 5)
+#define S3C64XX_WAKEUPSTAT_KEY (1 << 4)
+#define S3C64XX_WAKEUPSTAT_TS (1 << 3)
+#define S3C64XX_WAKEUPSTAT_RTC_TICK (1 << 2)
+#define S3C64XX_WAKEUPSTAT_RTC_ALARM (1 << 1)
+#define S3C64XX_WAKEUPSTAT_EINT (1 << 0)
+
+#define S3C64XX_BLK_PWR_STAT S3C_SYSREG(0x90c)
+
+#define S3C64XX_BLKPWRSTAT_G (1 << 7)
+#define S3C64XX_BLKPWRSTAT_ETM (1 << 6)
+#define S3C64XX_BLKPWRSTAT_S (1 << 5)
+#define S3C64XX_BLKPWRSTAT_F (1 << 4)
+#define S3C64XX_BLKPWRSTAT_P (1 << 3)
+#define S3C64XX_BLKPWRSTAT_I (1 << 2)
+#define S3C64XX_BLKPWRSTAT_V (1 << 1)
+#define S3C64XX_BLKPWRSTAT_TOP (1 << 0)
+
+#define S3C64XX_INFORM0 S3C_SYSREG(0xA00)
+#define S3C64XX_INFORM1 S3C_SYSREG(0xA04)
+#define S3C64XX_INFORM2 S3C_SYSREG(0xA08)
+#define S3C64XX_INFORM3 S3C_SYSREG(0xA0C)
+
+#endif /* __PLAT_S3C64XX_REGS_SYSCON_POWER_H */
diff --git a/arch/arm/plat-s3c64xx/irq-eint.c b/arch/arm/plat-s3c64xx/irq-eint.c
index a57636137a6..90654adbb48 100644
--- a/arch/arm/plat-s3c64xx/irq-eint.c
+++ b/arch/arm/plat-s3c64xx/irq-eint.c
@@ -20,23 +20,11 @@
#include <asm/hardware/vic.h>
#include <plat/regs-irqtype.h>
+#include <plat/regs-gpio.h>
#include <mach/map.h>
#include <plat/cpu.h>
-
-/* GPIO is 0x7F008xxx, */
-#define S3C64XX_GPIOREG(x) (S3C64XX_VA_GPIO + (x))
-
-#define S3C64XX_EINT0CON0 S3C64XX_GPIOREG(0x900)
-#define S3C64XX_EINT0CON1 S3C64XX_GPIOREG(0x904)
-#define S3C64XX_EINT0FLTCON0 S3C64XX_GPIOREG(0x910)
-#define S3C64XX_EINT0FLTCON1 S3C64XX_GPIOREG(0x914)
-#define S3C64XX_EINT0FLTCON2 S3C64XX_GPIOREG(0x918)
-#define S3C64XX_EINT0FLTCON3 S3C64XX_GPIOREG(0x91C)
-
-#define S3C64XX_EINT0MASK S3C64XX_GPIOREG(0x920)
-#define S3C64XX_EINT0PEND S3C64XX_GPIOREG(0x924)
-
+#include <plat/pm.h>
#define eint_offset(irq) ((irq) - IRQ_EINT(0))
#define eint_irq_to_bit(irq) (1 << eint_offset(irq))
@@ -46,7 +34,7 @@ static inline void s3c_irq_eint_mask(unsigned int irq)
u32 mask;
mask = __raw_readl(S3C64XX_EINT0MASK);
- mask |= eint_irq_to_bit(irq);
+ mask &= ~eint_irq_to_bit(irq);
__raw_writel(mask, S3C64XX_EINT0MASK);
}
@@ -145,6 +133,7 @@ static struct irq_chip s3c_irq_eint = {
.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
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);
+
diff --git a/arch/arm/plat-s3c64xx/irq.c b/arch/arm/plat-s3c64xx/irq.c
index a94f1d5e819..12e9d689b15 100644
--- a/arch/arm/plat-s3c64xx/irq.c
+++ b/arch/arm/plat-s3c64xx/irq.c
@@ -14,12 +14,14 @@
#include <linux/kernel.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/cpu.h>
@@ -135,9 +137,6 @@ static inline unsigned int s3c_irq_uart_bit(unsigned int irq)
}
/* UART interrupt registers, not worth adding to seperate include header */
-#define S3C64XX_UINTP 0x30
-#define S3C64XX_UINTSP 0x34
-#define S3C64XX_UINTM 0x38
static void s3c_irq_uart_mask(unsigned int irq)
{
@@ -252,6 +251,8 @@ void __init s3c64xx_init_irq(u32 vic0_valid, u32 vic1_valid)
for (uart = 0; uart < ARRAY_SIZE(uart_irqs); uart++)
s3c64xx_uart_irq(&uart_irqs[uart]);
+
}
+
diff --git a/arch/arm/plat-s3c64xx/pm.c b/arch/arm/plat-s3c64xx/pm.c
new file mode 100644
index 00000000000..539a93b1b88
--- /dev/null
+++ b/arch/arm/plat-s3c64xx/pm.c
@@ -0,0 +1,157 @@
+/* linux/arch/arm/plat-s3c64xx/pm.c
+ *
+ * Copyright 2008 Openmoko, Inc.
+ * Copyright 2008 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ * http://armlinux.simtec.co.uk/
+ *
+ * S3C64XX CPU PM support.
+ *
+ * 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/suspend.h>
+#include <linux/serial_core.h>
+#include <linux/io.h>
+
+#include <mach/map.h>
+
+#include <plat/pm.h>
+#include <plat/regs-sys.h>
+#include <plat/regs-gpio.h>
+#include <plat/regs-clock.h>
+#include <plat/regs-syscon-power.h>
+
+#ifdef CONFIG_S3C_PM_DEBUG_LED_SMDK
+#include <plat/gpio-bank-n.h>
+
+void s3c_pm_debug_smdkled(u32 set, u32 clear)
+{
+ unsigned long flags;
+ u32 reg;
+
+ local_irq_save(flags);
+ reg = __raw_readl(S3C64XX_GPNCON);
+ reg &= ~(S3C64XX_GPN_CONMASK(12) | S3C64XX_GPN_CONMASK(13) |
+ S3C64XX_GPN_CONMASK(14) | S3C64XX_GPN_CONMASK(15));
+ reg |= S3C64XX_GPN_OUTPUT(12) | S3C64XX_GPN_OUTPUT(13) |
+ S3C64XX_GPN_OUTPUT(14) | S3C64XX_GPN_OUTPUT(15);
+ __raw_writel(reg, S3C64XX_GPNCON);
+
+ reg = __raw_readl(S3C64XX_GPNDAT);
+ reg &= ~(clear << 12);
+ reg |= set << 12;
+ __raw_writel(reg, S3C64XX_GPNDAT);
+
+ local_irq_restore(flags);
+}
+#endif
+
+static struct sleep_save core_save[] = {
+ SAVE_ITEM(S3C_APLL_LOCK),
+ SAVE_ITEM(S3C_MPLL_LOCK),
+ SAVE_ITEM(S3C_EPLL_LOCK),
+ SAVE_ITEM(S3C_CLK_SRC),
+ SAVE_ITEM(S3C_CLK_DIV0),
+ SAVE_ITEM(S3C_CLK_DIV1),
+ SAVE_ITEM(S3C_CLK_DIV2),
+ SAVE_ITEM(S3C_CLK_OUT),
+ SAVE_ITEM(S3C_HCLK_GATE),
+ SAVE_ITEM(S3C_PCLK_GATE),
+ SAVE_ITEM(S3C_SCLK_GATE),
+ SAVE_ITEM(S3C_MEM0_GATE),
+
+ SAVE_ITEM(S3C_EPLL_CON1),
+ SAVE_ITEM(S3C_EPLL_CON0),
+
+#ifndef CONFIG_CPU_FREQ
+ SAVE_ITEM(S3C_APLL_CON),
+ SAVE_ITEM(S3C_MPLL_CON),
+#endif
+};
+
+static struct sleep_save misc_save[] = {
+ SAVE_ITEM(S3C64XX_AHB_CON0),
+ SAVE_ITEM(S3C64XX_AHB_CON1),
+ SAVE_ITEM(S3C64XX_AHB_CON2),
+};
+
+void s3c_pm_configure_extint(void)
+{
+ __raw_writel(s3c_irqwake_eintmask, S3C64XX_EINT_MASK);
+ __raw_writel(s3c_irqwake_eintmask, S3C64XX_EINT_MASK);
+}
+
+void s3c_pm_restore_core(void)
+{
+ __raw_writel(0, S3C64XX_EINT_MASK);
+
+ s3c_pm_debug_smdkled(1 << 2, 0);
+
+ s3c_pm_do_restore_core(core_save, ARRAY_SIZE(core_save));
+ s3c_pm_do_restore(misc_save, ARRAY_SIZE(misc_save));
+}
+
+void s3c_pm_save_core(void)
+{
+ s3c_pm_do_save(misc_save, ARRAY_SIZE(misc_save));
+ s3c_pm_do_save(core_save, ARRAY_SIZE(core_save));
+}
+
+/* since both s3c6400 and s3c6410 share the same sleep pm calls, we
+ * put the per-cpu code in here until any new cpu comes along and changes
+ * this.
+ */
+
+static void s3c64xx_cpu_suspend(void)
+{
+ unsigned long tmp;
+
+ /* set our standby method to sleep */
+
+ tmp = __raw_readl(S3C64XX_PWR_CFG);
+ tmp &= ~S3C64XX_PWRCFG_CFG_WFI_MASK;
+ tmp |= S3C64XX_PWRCFG_CFG_WFI_SLEEP;
+ __raw_writel(tmp, S3C64XX_PWR_CFG);
+
+ /* set the LED state to 0110 over sleep */
+ s3c_pm_debug_smdkled(3 << 1, 0xf);
+
+ /* issue the standby signal into the pm unit. Note, we
+ * issue a write-buffer drain just in case */
+
+ tmp = 0;
+
+ asm("b 1f\n\t"
+ ".align 5\n\t"
+ "1:\n\t"
+ "mcr p15, 0, %0, c7, c10, 5\n\t"
+ "mcr p15, 0, %0, c7, c10, 4\n\t"
+ "mcr p15, 0, %0, c7, c0, 4" :: "r" (tmp));
+
+ /* we should never get past here */
+
+ panic("sleep resumed to originator?");
+}
+
+static void s3c64xx_pm_prepare(void)
+{
+ /* store address of resume. */
+ __raw_writel(virt_to_phys(s3c_cpu_resume), S3C64XX_INFORM0);
+
+ /* ensure previous wakeup state is cleared before sleeping */
+ __raw_writel(__raw_readl(S3C64XX_WAKEUP_STAT), S3C64XX_WAKEUP_STAT);
+}
+
+static int s3c64xx_pm_init(void)
+{
+ pm_cpu_prep = s3c64xx_pm_prepare;
+ pm_cpu_sleep = s3c64xx_cpu_suspend;
+ pm_uart_udivslot = 1;
+ return 0;
+}
+
+arch_initcall(s3c64xx_pm_init);
diff --git a/arch/arm/plat-s3c64xx/s3c6400-clock.c b/arch/arm/plat-s3c64xx/s3c6400-clock.c
index 8d9a0cada66..a6f6b91b732 100644
--- a/arch/arm/plat-s3c64xx/s3c6400-clock.c
+++ b/arch/arm/plat-s3c64xx/s3c6400-clock.c
@@ -650,6 +650,5 @@ void __init s3c6400_register_clocks(void)
}
}
- clk_mpll.parent = &clk_mout_mpll.clk;
clk_epll.parent = &clk_mout_epll.clk;
}
diff --git a/arch/arm/plat-s3c64xx/sleep.S b/arch/arm/plat-s3c64xx/sleep.S
new file mode 100644
index 00000000000..8b96f2f0e06
--- /dev/null
+++ b/arch/arm/plat-s3c64xx/sleep.S
@@ -0,0 +1,135 @@
+/* linux/0arch/arm/plat-s3c64xx/sleep.S
+ *
+ * Copyright 2008 Openmoko, Inc.
+ * Copyright 2008 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ * http://armlinux.simtec.co.uk/
+ *
+ * S3C64XX CPU sleep code
+ *
+ * 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/linkage.h>
+#include <asm/assembler.h>
+#include <mach/map.h>
+
+#undef S3C64XX_VA_GPIO
+#define S3C64XX_VA_GPIO (0x0)
+
+#include <plat/regs-gpio.h>
+#include <plat/gpio-bank-n.h>
+
+#define LL_UART (S3C_PA_UART + (0x400 * CONFIG_S3C_LOWLEVEL_UART_PORT))
+
+ .text
+
+ /* s3c_cpu_save
+ *
+ * Save enough processor state to allow the restart of the pm.c
+ * code after resume.
+ *
+ * entry:
+ * r0 = pointer to the save block
+ * exit:
+ * r0 = exit code: 1 => stored data
+ * 0 => resumed from sleep
+ */
+
+ENTRY(s3c_cpu_save)
+ stmfd sp!, { r4 - r12, lr }
+
+ mrc p15, 0, r4, c13, c0, 0 @ FCSE/PID
+ mrc p15, 0, r5, c3, c0, 0 @ Domain ID
+ mrc p15, 0, r6, c2, c0, 0 @ Translation Table BASE0
+ mrc p15, 0, r7, c2, c0, 1 @ Translation Table BASE1
+ mrc p15, 0, r8, c2, c0, 2 @ Translation Table Control
+ mrc p15, 0, r9, c1, c0, 0 @ Control register
+
+ stmia r0, { r4 - r13 } @ Save CP registers and SP
+ mov r0, #0
+ ldmfd sp, { r4 - r12, pc } @ return, not disturbing SP
+
+ @@ return to the caller, after the MMU is turned on.
+ @@ restore the last bits of the stack and return.
+resume_with_mmu:
+ mov r0, #1
+ ldmfd sp!, { r4 - r12, pc } @ return, from sp from s3c_cpu_save
+
+ .data
+
+ /* the next bit is code, but it requires easy access to the
+ * s3c_sleep_save_phys data before the MMU is switched on, so
+ * we store the code that needs this variable in the .data where
+ * the value can be written to (the .text segment is RO).
+ */
+
+ .global s3c_sleep_save_phys
+s3c_sleep_save_phys:
+ .word 0
+
+ /* Sleep magic, the word before the resume entry point so that the
+ * bootloader can check for a resumeable image. */
+
+ .word 0x2bedf00d
+
+ /* s3c_cpu_reusme
+ *
+ * This is the entry point, stored by whatever method the bootloader
+ * requires to get the kernel runnign again. This code expects to be
+ * entered with no caches live and the MMU disabled. It will then
+ * restore the MMU and other basic CP registers saved and restart
+ * the kernel C code to finish the resume code.
+ */
+
+ENTRY(s3c_cpu_resume)
+ msr cpsr_c, #PSR_I_BIT | PSR_F_BIT | SVC_MODE
+ ldr r2, =LL_UART /* for debug */
+
+#ifdef CONFIG_S3C_PM_DEBUG_LED_SMDK
+ /* Initialise the GPIO state if we are debugging via the SMDK LEDs,
+ * as the uboot version supplied resets these to inputs during the
+ * resume checks.
+ */
+
+ ldr r3, =S3C64XX_PA_GPIO
+ ldr r0, [ r3, #S3C64XX_GPNCON ]
+ bic r0, r0, #(S3C64XX_GPN_CONMASK(12) | S3C64XX_GPN_CONMASK(13) | \
+ S3C64XX_GPN_CONMASK(14) | S3C64XX_GPN_CONMASK(15))
+ orr r0, r0, #(S3C64XX_GPN_OUTPUT(12) | S3C64XX_GPN_OUTPUT(13) | \
+ S3C64XX_GPN_OUTPUT(14) | S3C64XX_GPN_OUTPUT(15))
+ str r0, [ r3, #S3C64XX_GPNCON ]
+
+ ldr r0, [ r3, #S3C64XX_GPNDAT ]
+ bic r0, r0, #0xf << 12 @ GPN12..15
+ orr r0, r0, #1 << 15 @ GPN15
+ str r0, [ r3, #S3C64XX_GPNDAT ]
+#endif
+
+ /* __v6_setup from arch/arm/mm/proc-v6.S, ensure that the caches
+ * are thorougly cleaned just in case the bootloader didn't do it
+ * for us. */
+ mov r0, #0
+ mcr p15, 0, r0, c7, c14, 0 @ clean+invalidate D cache
+ mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache
+ mcr p15, 0, r0, c7, c15, 0 @ clean+invalidate cache
+ mcr p15, 0, r0, c7, c10, 4 @ drain write buffer
+ mcr p15, 0, r0, c8, c7, 0 @ invalidate I + D TLBs
+
+ ldr r0, s3c_sleep_save_phys
+ ldmia r0, { r4 - r13 }
+
+ mcr p15, 0, r4, c13, c0, 0 @ FCSE/PID
+ mcr p15, 0, r5, c3, c0, 0 @ Domain ID
+ mcr p15, 0, r6, c2, c0, 0 @ Translation Table BASE0
+ mcr p15, 0, r7, c2, c0, 1 @ Translation Table BASE1
+ mcr p15, 0, r8, c2, c0, 2 @ Translation Table Control
+
+ ldr r2, =resume_with_mmu
+ mcr p15, 0, r9, c1, c0, 0 /* turn mmu back on */
+ nop
+ mov pc, r2 /* jump back */
+
+ .end
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 94b8fea5fb8..77efd7a7aab 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -31,6 +31,7 @@ obj-$(CONFIG_KGDB_TESTS) += kgdbts.o
obj-$(CONFIG_SGI_XP) += sgi-xp/
obj-$(CONFIG_SGI_GRU) += sgi-gru/
obj-$(CONFIG_HP_ILO) += hpilo.o
+obj-$(CONFIG_MACH_SMDK6410) += smdk6410-sleeptest.o
obj-$(CONFIG_LOW_MEMORY_KILLER) += lowmemorykiller.o
obj-$(CONFIG_MACH_NEO1973) += neo1973_version.o \
neo1973_pm_host.o \
diff --git a/drivers/misc/smdk6410-sleeptest.c b/drivers/misc/smdk6410-sleeptest.c
new file mode 100644
index 00000000000..3bf668024fb
--- /dev/null
+++ b/drivers/misc/smdk6410-sleeptest.c
@@ -0,0 +1,65 @@
+/* linux/drivers/misc/smdk6410-sleeptest.c
+ *
+ * Copyright 2008 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/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/err.h>
+#include <linux/interrupt.h>
+
+#include <plat/gpio-cfg.h>
+
+static irqreturn_t sleep_action(int irq, void *pw)
+{
+ printk(KERN_INFO "%s: irq %d\n", __func__, irq);
+ return IRQ_HANDLED;
+}
+
+static void sleep_setup(unsigned int irq, unsigned int gpio)
+{
+ int ret;
+
+ WARN_ON(s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)) < 0);
+ WARN_ON(s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP) < 0);
+
+ ret = request_irq(irq, sleep_action, IRQF_TRIGGER_FALLING,
+ "sleep", NULL);
+ if (ret < 0)
+ printk(KERN_ERR "%s: request_irq() failed\n", __func__);
+
+ ret = set_irq_wake(irq, 1);
+ if (ret < 0)
+ printk(KERN_ERR "%s: set_irq_wake() failed\n", __func__);
+}
+
+static void sleep_led(unsigned int gpio)
+{
+ gpio_request(gpio, "sleep led");
+ gpio_direction_output(gpio, 0);
+}
+
+static __init int smdk6410_sleeptest_init(void)
+{
+ sleep_setup(IRQ_EINT(10), S3C64XX_GPN(10));
+ sleep_led(S3C64XX_GPN(15));
+ sleep_led(S3C64XX_GPN(14));
+ sleep_led(S3C64XX_GPN(13));
+ sleep_led(S3C64XX_GPN(12));
+
+ return 0;
+}
+
+module_init(smdk6410_sleeptest_init);
+
+MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/serial/s3c6400.c b/drivers/serial/s3c6400.c
index 06936d13393..3e378523368 100644
--- a/drivers/serial/s3c6400.c
+++ b/drivers/serial/s3c6400.c
@@ -102,6 +102,7 @@ static struct s3c24xx_uart_info s3c6400_uart_inf = {
.name = "Samsung S3C6400 UART",
.type = PORT_S3C6400,
.fifosize = 64,
+ .has_divslot = 1,
.rx_fifomask = S3C2440_UFSTAT_RXMASK,
.rx_fifoshift = S3C2440_UFSTAT_RXSHIFT,
.rx_fifofull = S3C2440_UFSTAT_RXFULL,
diff --git a/drivers/serial/samsung.c b/drivers/serial/samsung.c
index c262eb1ae20..eca6cab0e20 100644
--- a/drivers/serial/samsung.c
+++ b/drivers/serial/samsung.c
@@ -512,6 +512,7 @@ s3c24xx_serial_setsource(struct uart_port *port, struct s3c24xx_uart_clksrc *c)
struct baud_calc {
struct s3c24xx_uart_clksrc *clksrc;
unsigned int calc;
+ unsigned int divslot;
unsigned int quot;
struct clk *src;
};
@@ -521,6 +522,7 @@ static int s3c24xx_serial_calcbaud(struct baud_calc *calc,
struct s3c24xx_uart_clksrc *clksrc,
unsigned int baud)
{
+ struct s3c24xx_uart_port *ourport = to_ourport(port);
unsigned long rate;
calc->src = clk_get(port->dev, clksrc->name);
@@ -531,8 +533,24 @@ static int s3c24xx_serial_calcbaud(struct baud_calc *calc,
rate /= clksrc->divisor;
calc->clksrc = clksrc;
- calc->quot = (rate + (8 * baud)) / (16 * baud);
- calc->calc = (rate / (calc->quot * 16));
+
+ if (ourport->info->has_divslot) {
+ unsigned long div = rate / baud;
+
+ /* The UDIVSLOT register on the newer UARTs allows us to
+ * get a divisor adjustment of 1/16th on the baud clock.
+ *
+ * We don't keep the UDIVSLOT value (the 16ths we calculated
+ * by not multiplying the baud by 16) as it is easy enough
+ * to recalculate.
+ */
+
+ calc->quot = div / 16;
+ calc->calc = rate / div;
+ } else {
+ calc->quot = (rate + (8 * baud)) / (16 * baud);
+ calc->calc = (rate / (calc->quot * 16));
+ }
calc->quot--;
return 1;
@@ -615,6 +633,30 @@ static unsigned int s3c24xx_serial_getclk(struct uart_port *port,
return best->quot;
}
+/* udivslot_table[]
+ *
+ * This table takes the fractional value of the baud divisor and gives
+ * the recommended setting for the UDIVSLOT register.
+ */
+static u16 udivslot_table[16] = {
+ [0] = 0x0000,
+ [1] = 0x0080,
+ [2] = 0x0808,
+ [3] = 0x0888,
+ [4] = 0x2222,
+ [5] = 0x4924,
+ [6] = 0x4A52,
+ [7] = 0x54AA,
+ [8] = 0x5555,
+ [9] = 0xD555,
+ [10] = 0xD5D5,
+ [11] = 0xDDD5,
+ [12] = 0xDDDD,
+ [13] = 0xDFDD,
+ [14] = 0xDFDF,
+ [15] = 0xFFDF,
+};
+
static void s3c24xx_serial_set_termios(struct uart_port *port,
struct ktermios *termios,
struct ktermios *old)
@@ -627,6 +669,7 @@ static void s3c24xx_serial_set_termios(struct uart_port *port,
unsigned int baud, quot;
unsigned int ulcon;
unsigned int umcon;
+ unsigned int udivslot = 0;
/*
* We don't support modem control lines.
@@ -648,6 +691,7 @@ static void s3c24xx_serial_set_termios(struct uart_port *port,
/* check to see if we need to change clock source */
if (ourport->clksrc != clksrc || ourport->baudclk != clk) {
+ dbg("selecting clock %p\n", clk);
s3c24xx_serial_setsource(port, clksrc);
if (ourport->baudclk != NULL && !IS_ERR(ourport->baudclk)) {
@@ -655,6 +699,7 @@ static void s3c24xx_serial_set_termios(struct uart_port *port,
ourport->baudclk = NULL;
}
+ //dbg("calling clk_enable() for new baud clock\n");
clk_enable(clk);
ourport->clksrc = clksrc;
@@ -662,6 +707,13 @@ static void s3c24xx_serial_set_termios(struct uart_port *port,
ourport->baudclk_rate = clk ? clk_get_rate(clk) : 0;
}
+ if (ourport->info->has_divslot) {
+ unsigned int div = ourport->baudclk_rate / baud;
+
+ udivslot = udivslot_table[div & 15];
+ dbg("udivslot = %04x (div %d)\n", udivslot, div & 15);
+ }
+
switch (termios->c_cflag & CSIZE) {
case CS5:
dbg("config: 5bits/char\n");
@@ -701,12 +753,16 @@ static void s3c24xx_serial_set_termios(struct uart_port *port,
spin_lock_irqsave(&port->lock, flags);
- dbg("setting ulcon to %08x, brddiv to %d\n", ulcon, quot);
+ dbg("setting ulcon to %08x, brddiv to %d, udivslot %08x\n",
+ ulcon, quot, udivslot);
wr_regl(port, S3C2410_ULCON, ulcon);
wr_regl(port, S3C2410_UBRDIV, quot);
wr_regl(port, S3C2410_UMCON, umcon);
+ if (ourport->info->has_divslot)
+ wr_regl(port, S3C2443_DIVSLOT, udivslot);
+
dbg("uart: ulcon = 0x%08x, ucon = 0x%08x, ufcon = 0x%08x\n",
rd_regl(port, S3C2410_ULCON),
rd_regl(port, S3C2410_UCON),
diff --git a/drivers/serial/samsung.h b/drivers/serial/samsung.h
index 9675b2fa267..f259211279f 100644
--- a/drivers/serial/samsung.h
+++ b/drivers/serial/samsung.h
@@ -23,6 +23,10 @@ struct s3c24xx_uart_info {
unsigned long tx_fifoshift;
unsigned long tx_fifofull;
+ /* uart port features */
+
+ unsigned int has_divslot:1;
+
/* clock source control */
int (*get_clksrc)(struct uart_port *, struct s3c24xx_uart_clksrc *clk);
diff --git a/drivers/video/s3c-fb.c b/drivers/video/s3c-fb.c
index 9ffb6b68a8e..09ebbc69b0c 100644
--- a/drivers/video/s3c-fb.c
+++ b/drivers/video/s3c-fb.c
@@ -962,8 +962,48 @@ static int __devexit s3c_fb_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_PM
+static int s3c_fb_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ struct s3c_fb *sfb = platform_get_drvdata(pdev);
+ struct s3c_fb_win *win;
+ int win_no;
+
+ for (win_no = S3C_FB_MAX_WIN; win_no >= 0; win_no--) {
+ win = sfb->windows[win_no];
+ if (!win)
+ continue;
+
+ /* use the blank function to push into power-down */
+ s3c_fb_blank(FB_BLANK_POWERDOWN, win->fbinfo);
+ }
+
+ clk_disable(sfb->bus_clk);
+ return 0;
+}
+
+static int s3c_fb_resume(struct platform_device *pdev)
+{
+ struct s3c_fb *sfb = platform_get_drvdata(pdev);
+ struct s3c_fb_win *win;
+ int win_no;
+
+ clk_enable(sfb->bus_clk);
+
+ for (win_no = 0; win_no < S3C_FB_MAX_WIN; win_no++) {
+ win = sfb->windows[win_no];
+ if (!win)
+ continue;
+
+ s3c_fb_set_par(win->fbinfo);
+ }
+
+ return 0;
+}
+#else
#define s3c_fb_suspend NULL
#define s3c_fb_resume NULL
+#endif
static struct platform_driver s3c_fb_driver = {
.probe = s3c_fb_probe,