[PATCH v2] ARM: S5PV210: Add Power Management Support
Kukjin Kim
kgene.kim at samsung.com
Mon May 31 21:36:04 EDT 2010
From: Jongpill Lee <boyko.lee at samsung.com>
This patch adds suspend-to-ram support for S5PV210.
Signed-off-by: Jongpill Lee <boyko.lee at samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim at samsung.com>
---
Changes since v1:
1. Fixed comments as per comments from Ben Dooks
2. Removed redunt #if defined(CONFIG_PM)
3. Removed redunt including header files
4. Removed <mach/pm.h> and <plat/pm-s5p.h>
5. Moved 's5pv210_core_save' into machine directory
6. Moved sleep.S into machine directory for S5P SoCs compatibility
7. Added CF retension configuration when wake-up
This patch is based on Linus' master (2.6.35-rc1)
arch/arm/mach-s5pv210/Kconfig | 6 +
arch/arm/mach-s5pv210/Makefile | 1 +
arch/arm/mach-s5pv210/include/mach/pm-core.h | 44 ++++++
arch/arm/mach-s5pv210/include/mach/regs-clock.h | 5 +-
arch/arm/mach-s5pv210/mach-smdkc110.c | 2 +
arch/arm/mach-s5pv210/mach-smdkv210.c | 3 +
arch/arm/mach-s5pv210/pm.c | 180 +++++++++++++++++++++++
arch/arm/mach-s5pv210/sleep.S | 166 +++++++++++++++++++++
arch/arm/plat-s5p/Makefile | 2 +
arch/arm/plat-s5p/include/plat/irqs.h | 2 +
arch/arm/plat-s5p/irq-pm.c | 108 ++++++++++++++
arch/arm/plat-s5p/pm.c | 52 +++++++
arch/arm/plat-samsung/pm-gpio.c | 4 +-
13 files changed, 572 insertions(+), 3 deletions(-)
create mode 100644 arch/arm/mach-s5pv210/include/mach/pm-core.h
create mode 100644 arch/arm/mach-s5pv210/pm.c
create mode 100644 arch/arm/mach-s5pv210/sleep.S
create mode 100644 arch/arm/plat-s5p/irq-pm.c
create mode 100644 arch/arm/plat-s5p/pm.c
diff --git a/arch/arm/mach-s5pv210/Kconfig b/arch/arm/mach-s5pv210/Kconfig
index 0761eac..86cca1b 100644
--- a/arch/arm/mach-s5pv210/Kconfig
+++ b/arch/arm/mach-s5pv210/Kconfig
@@ -14,6 +14,7 @@ config CPU_S5PV210
select PLAT_S5P
select S3C_PL330_DMA
select S5P_EXT_INT
+ select S5PV210_PM if PM
help
Enable S5PV210 CPU support
@@ -88,4 +89,9 @@ config MACH_SMDKC110
Machine support for Samsung SMDKC110
S5PC110(MCP) is one of package option of S5PV210
+config S5PV210_PM
+ bool
+ help
+ Power Management code common to S5PV210
+
endif
diff --git a/arch/arm/mach-s5pv210/Makefile b/arch/arm/mach-s5pv210/Makefile
index 30be9a6..59382ec 100644
--- a/arch/arm/mach-s5pv210/Makefile
+++ b/arch/arm/mach-s5pv210/Makefile
@@ -14,6 +14,7 @@ obj- :=
obj-$(CONFIG_CPU_S5PV210) += cpu.o init.o clock.o dma.o gpiolib.o
obj-$(CONFIG_CPU_S5PV210) += setup-i2c0.o
+obj-$(CONFIG_S5PV210_PM) += pm.o sleep.o
# machine support
diff --git a/arch/arm/mach-s5pv210/include/mach/pm-core.h b/arch/arm/mach-s5pv210/include/mach/pm-core.h
new file mode 100644
index 0000000..ca3f827
--- /dev/null
+++ b/arch/arm/mach-s5pv210/include/mach/pm-core.h
@@ -0,0 +1,44 @@
+/* linux/arch/arm/mach-s5pv210/include/mach/pm-core.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Based on arch/arm/mach-s3c2410/include/mach/pm-core.h,
+ * Copyright 2008 Simtec Electronics
+ * Ben Dooks <ben at simtec.co.uk>
+ * http://armlinux.simtec.co.uk/
+ *
+ * S5PV210 - PM core support for arch/arm/plat-s5p/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)
+{
+ /* nothing here yet */
+}
+
+static inline void s3c_pm_arch_prepare_irqs(void)
+{
+ __raw_writel(s3c_irqwake_intmask, S5P_WAKEUP_MASK);
+ __raw_writel(s3c_irqwake_eintmask, S5P_EINT_WAKEUP_MASK);
+}
+
+static inline void s3c_pm_arch_stop_clocks(void)
+{
+ /* nothing here yet */
+}
+
+static inline void s3c_pm_arch_show_resume_irqs(void)
+{
+ /* nothing here yet */
+}
+
+static inline void s3c_pm_arch_update_uart(void __iomem *regs,
+ struct pm_uart_save *save)
+{
+ /* nothing here yet */
+}
+
diff --git a/arch/arm/mach-s5pv210/include/mach/regs-clock.h b/arch/arm/mach-s5pv210/include/mach/regs-clock.h
index 2a25ab4..f4a443a 100644
--- a/arch/arm/mach-s5pv210/include/mach/regs-clock.h
+++ b/arch/arm/mach-s5pv210/include/mach/regs-clock.h
@@ -157,8 +157,11 @@
#define S5P_SLEEP_CFG_USBOSC_EN (1 << 1)
/* OTHERS Resgister */
+#define S5P_OTHERS_RET_IO (1 << 31)
+#define S5P_OTHERS_RET_CF (1 << 30)
+#define S5P_OTHERS_RET_MMC (1 << 29)
+#define S5P_OTHERS_RET_UART (1 << 28)
#define S5P_OTHERS_USB_SIG_MASK (1 << 16)
-#define S5P_OTHERS_MIPI_DPHY_EN (1 << 28)
/* MIPI */
#define S5P_MIPI_DPHY_EN (3)
diff --git a/arch/arm/mach-s5pv210/mach-smdkc110.c b/arch/arm/mach-s5pv210/mach-smdkc110.c
index 4c8903c..ebb4832 100644
--- a/arch/arm/mach-s5pv210/mach-smdkc110.c
+++ b/arch/arm/mach-s5pv210/mach-smdkc110.c
@@ -25,6 +25,7 @@
#include <plat/s5pv210.h>
#include <plat/devs.h>
#include <plat/cpu.h>
+#include <plat/pm.h>
/* Following are default values for UCON, ULCON and UFCON UART registers */
#define S5PV210_UCON_DEFAULT (S3C2410_UCON_TXILEVEL | \
@@ -86,6 +87,7 @@ static void __init smdkc110_map_io(void)
static void __init smdkc110_machine_init(void)
{
+ s3c_pm_init();
platform_add_devices(smdkc110_devices, ARRAY_SIZE(smdkc110_devices));
}
diff --git a/arch/arm/mach-s5pv210/mach-smdkv210.c b/arch/arm/mach-s5pv210/mach-smdkv210.c
index 0d46279..ba30b5d 100644
--- a/arch/arm/mach-s5pv210/mach-smdkv210.c
+++ b/arch/arm/mach-s5pv210/mach-smdkv210.c
@@ -27,6 +27,7 @@
#include <plat/cpu.h>
#include <plat/adc.h>
#include <plat/ts.h>
+#include <plat/pm.h>
/* Following are default values for UCON, ULCON and UFCON UART registers */
#define S5PV210_UCON_DEFAULT (S3C2410_UCON_TXILEVEL | \
@@ -96,6 +97,8 @@ static void __init smdkv210_map_io(void)
static void __init smdkv210_machine_init(void)
{
+ s3c_pm_init();
+
s3c24xx_ts_set_platdata(&s3c_ts_platform);
platform_add_devices(smdkv210_devices, ARRAY_SIZE(smdkv210_devices));
}
diff --git a/arch/arm/mach-s5pv210/pm.c b/arch/arm/mach-s5pv210/pm.c
new file mode 100644
index 0000000..0690332
--- /dev/null
+++ b/arch/arm/mach-s5pv210/pm.c
@@ -0,0 +1,180 @@
+/* linux/arch/arm/mach-s5pv210/pm.c
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * S5PV210 - Power Management support
+ *
+ * Based on arch/arm/mach-s3c2410/pm.c
+ * Copyright (c) 2006 Simtec Electronics
+ * Ben Dooks <ben at 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/suspend.h>
+#include <linux/io.h>
+
+#include <plat/cpu.h>
+#include <plat/pm.h>
+#include <plat/regs-timer.h>
+
+#include <mach/regs-irq.h>
+#include <mach/regs-clock.h>
+
+static struct sleep_save s5pv210_core_save[] = {
+ /* Clock source */
+ SAVE_ITEM(S5P_CLK_SRC0),
+ SAVE_ITEM(S5P_CLK_SRC1),
+ SAVE_ITEM(S5P_CLK_SRC2),
+ SAVE_ITEM(S5P_CLK_SRC3),
+ SAVE_ITEM(S5P_CLK_SRC4),
+ SAVE_ITEM(S5P_CLK_SRC5),
+ SAVE_ITEM(S5P_CLK_SRC6),
+
+ /* Clock source Mask */
+ SAVE_ITEM(S5P_CLK_SRC_MASK0),
+ SAVE_ITEM(S5P_CLK_SRC_MASK1),
+
+ /* Clock Divider */
+ SAVE_ITEM(S5P_CLK_DIV0),
+ SAVE_ITEM(S5P_CLK_DIV1),
+ SAVE_ITEM(S5P_CLK_DIV2),
+ SAVE_ITEM(S5P_CLK_DIV3),
+ SAVE_ITEM(S5P_CLK_DIV4),
+ SAVE_ITEM(S5P_CLK_DIV5),
+ SAVE_ITEM(S5P_CLK_DIV6),
+ SAVE_ITEM(S5P_CLK_DIV7),
+
+ /* Clock Main Gate */
+ SAVE_ITEM(S5P_CLKGATE_MAIN0),
+ SAVE_ITEM(S5P_CLKGATE_MAIN1),
+ SAVE_ITEM(S5P_CLKGATE_MAIN2),
+
+ /* Clock source Peri Gate */
+ SAVE_ITEM(S5P_CLKGATE_PERI0),
+ SAVE_ITEM(S5P_CLKGATE_PERI1),
+
+ /* Clock source SCLK Gate */
+ SAVE_ITEM(S5P_CLKGATE_SCLK0),
+ SAVE_ITEM(S5P_CLKGATE_SCLK1),
+
+ /* Clock IP Clock gate */
+ SAVE_ITEM(S5P_CLKGATE_IP0),
+ SAVE_ITEM(S5P_CLKGATE_IP1),
+ SAVE_ITEM(S5P_CLKGATE_IP2),
+ SAVE_ITEM(S5P_CLKGATE_IP3),
+ SAVE_ITEM(S5P_CLKGATE_IP4),
+
+ /* Clock Blcok and Bus gate */
+ SAVE_ITEM(S5P_CLKGATE_BLOCK),
+ SAVE_ITEM(S5P_CLKGATE_BUS0),
+
+ /* Clock ETC */
+ SAVE_ITEM(S5P_CLK_OUT),
+ SAVE_ITEM(S5P_MDNIE_SEL),
+
+ /* PWM Register */
+ SAVE_ITEM(S3C2410_TCFG0),
+ SAVE_ITEM(S3C2410_TCFG1),
+ SAVE_ITEM(S3C64XX_TINT_CSTAT),
+ SAVE_ITEM(S3C2410_TCON),
+ SAVE_ITEM(S3C2410_TCNTB(0)),
+ SAVE_ITEM(S3C2410_TCMPB(0)),
+ SAVE_ITEM(S3C2410_TCNTO(0)),
+
+ /* VIC 2 and 3*/
+ SAVE_ITEM(VA_VIC2 + VIC_INT_SELECT),
+ SAVE_ITEM(VA_VIC3 + VIC_INT_SELECT),
+ SAVE_ITEM(VA_VIC2 + VIC_INT_ENABLE),
+ SAVE_ITEM(VA_VIC3 + VIC_INT_ENABLE),
+ SAVE_ITEM(VA_VIC2 + VIC_INT_SOFT),
+ SAVE_ITEM(VA_VIC3 + VIC_INT_SOFT),
+
+};
+
+void s5pv210_cpu_suspend(void)
+{
+ unsigned long tmp;
+
+ /* 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"
+ ".word 0xe320f003" : : "r" (tmp));
+
+ /* we should never get past here */
+ panic("sleep resumed to originator?");
+}
+
+static void s5pv210_pm_prepare(void)
+{
+ unsigned int tmp;
+
+ /* ensure at least INFORM0 has the resume address */
+ __raw_writel(virt_to_phys(s3c_cpu_resume), S5P_INFORM0);
+
+ tmp = __raw_readl(S5P_SLEEP_CFG);
+ tmp &= ~(S5P_SLEEP_CFG_OSC_EN | S5P_SLEEP_CFG_USBOSC_EN);
+ __raw_writel(tmp, S5P_SLEEP_CFG);
+
+ /* WFI for SLEEP mode configuration by SYSCON */
+ tmp = __raw_readl(S5P_PWR_CFG);
+ tmp &= S5P_CFG_WFI_CLEAN;
+ tmp |= S5P_CFG_WFI_SLEEP;
+ __raw_writel(tmp, S5P_PWR_CFG);
+
+ /* SYSCON interrupt handling disable */
+ tmp = __raw_readl(S5P_OTHERS);
+ tmp |= S5P_OTHER_SYSC_INTOFF;
+ __raw_writel(tmp, S5P_OTHERS);
+
+ __raw_writel(0xffffffff, (VA_VIC0 + VIC_INT_ENABLE_CLEAR));
+ __raw_writel(0xffffffff, (VA_VIC1 + VIC_INT_ENABLE_CLEAR));
+ __raw_writel(0xffffffff, (VA_VIC2 + VIC_INT_ENABLE_CLEAR));
+ __raw_writel(0xffffffff, (VA_VIC3 + VIC_INT_ENABLE_CLEAR));
+
+ s3c_pm_do_save(s5pv210_core_save, ARRAY_SIZE(s5pv210_core_save));
+}
+
+static int s5pv210_pm_add(struct sys_device *sysdev)
+{
+ pm_cpu_prep = s5pv210_pm_prepare;
+ pm_cpu_sleep = s5pv210_cpu_suspend;
+
+ return 0;
+}
+
+static int s5pv210_pm_resume(struct sys_device *dev)
+{
+ u32 tmp;
+
+ tmp = __raw_readl(S5P_OTHERS);
+ tmp |= (S5P_OTHERS_RET_IO | S5P_OTHERS_RET_CF | \
+ S5P_OTHERS_RET_MMC | S5P_OTHERS_RET_UART);
+ __raw_writel(tmp , S5P_OTHERS);
+
+ s3c_pm_do_restore_core(s5pv210_core_save, ARRAY_SIZE(s5pv210_core_save));
+
+ return 0;
+}
+
+static struct sysdev_driver s5pv210_pm_driver = {
+ .add = s5pv210_pm_add,
+ .resume = s5pv210_pm_resume,
+};
+
+static __init int s5pv210_pm_drvinit(void)
+{
+ return sysdev_driver_register(&s5pv210_sysclass, &s5pv210_pm_driver);
+}
+arch_initcall(s5pv210_pm_drvinit);
diff --git a/arch/arm/mach-s5pv210/sleep.S b/arch/arm/mach-s5pv210/sleep.S
new file mode 100644
index 0000000..b7f8272
--- /dev/null
+++ b/arch/arm/mach-s5pv210/sleep.S
@@ -0,0 +1,166 @@
+/* linux/arch/arm/mach-s5pv210/sleep.S
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * S5PV210 power Manager (Suspend-To-RAM) support
+ *
+ * Based on S3C2410 sleep code by:
+ * Ben Dooks, (c) 2004 Simtec Electronics
+ *
+ * Based on PXA/SA1100 sleep code by:
+ * Nicolas Pitre, (c) 2002 Monta Vista Software Inc
+ * Cliff Brake, (c) 2001
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * 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
+*/
+
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+#include <asm/memory.h>
+
+ .text
+
+ /* s3c_cpu_save
+ *
+ * entry:
+ * r0 = save address (virtual addr of s3c_sleep_save_phys)
+ */
+
+ENTRY(s3c_cpu_save)
+
+ stmfd sp!, { r3 - 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
+ mrc p15, 0, r10, c1, c0, 1 @ Auxiliary control register
+ mrc p15, 0, r11, c1, c0, 2 @ Co-processor access controls
+ mrc p15, 0, r12, c10, c2, 0 @ Read PRRR
+ mrc p15, 0, r3, c10, c2, 1 @ READ NMRR
+
+ stmia r0, { r3 - r13 }
+
+ bl s3c_pm_cb_flushcache
+
+ ldr r0, =pm_cpu_sleep
+ ldr r0, [ r0 ]
+ mov pc, r0
+
+resume_with_mmu:
+ /* delete added mmu table list */
+ ldr r9 , =(PAGE_OFFSET - PHYS_OFFSET)
+ add r4, r4, r9
+ str r12, [r4]
+
+ ldmfd sp!, { r3 - r12, pc }
+
+ .ltorg
+
+ .data
+
+ .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
+ * s3c_cpu_resume entry.
+ */
+
+ .word 0x2bedf00d
+
+ /* s3c_cpu_resume
+ *
+ * resume code entry for bootloader to call
+ *
+ * we must put this code here in the data segment as we have no
+ * other way of restoring the stack pointer after sleep, and we
+ * must not write to the code segment (code is read-only)
+ */
+
+ENTRY(s3c_cpu_resume)
+ mov r0, #PSR_I_BIT | PSR_F_BIT | SVC_MODE
+ msr cpsr_c, r0
+
+ mov r1, #0
+ mcr p15, 0, r1, c8, c7, 0 @@ invalidate TLBs
+ mcr p15, 0, r1, c7, c5, 0 @@ invalidate I Cache
+
+ ldr r0, s3c_sleep_save_phys @ address of restore block
+ ldmia r0, { r3 - r13 }
+
+ mcr p15, 0, r4, c13, c0, 0 @ FCSE/PID
+ mcr p15, 0, r5, c3, c0, 0 @ Domain ID
+
+ mcr p15, 0, r8, c2, c0, 2 @ Translation Table Control
+ mcr p15, 0, r7, c2, c0, 1 @ Translation Table BASE1
+ mcr p15, 0, r6, c2, c0, 0 @ Translation Table BASE0
+
+ mcr p15, 0, r10, c1, c0, 1 @ Auxiliary control register
+
+ mov r0, #0
+ mcr p15, 0, r0, c8, c7, 0 @ Invalidate I & D TLB
+
+ mov r0, #0 @ restore copro access
+ mcr p15, 0, r11, c1, c0, 2 @ Co-processor access
+ mcr p15, 0, r0, c7, c5, 4
+
+ mcr p15, 0, r12, c10, c2, 0 @ write PRRR
+ mcr p15, 0, r3, c10, c2, 1 @ write NMRR
+
+ /* Calculate first section address into r8
+ * In Cotex-A8 case, When MMU turn on, MMU is reseted.
+ * So, before call resume_with_mmu, backup originally data.
+ */
+
+ mov r4, r6
+ mov r4, r4, LSR #14
+ mov r4, r4, LSL #14
+
+ /* Load TLB Base address from INFORM0 */
+ ldr r11, =0xe010f000
+ ldr r10, [r11, #0]
+ mov r10, r10, LSR #18
+ bic r10, r10, #0x3
+ orr r4, r4, r10
+
+ /* calculate mmu list value into r9 */
+ mov r10, r10, LSL #18
+ ldr r5, =0x40e
+ orr r10, r10, r5
+
+ /* back up originally data */
+
+ ldr r12, [r4]
+
+ /* Added list about mmu */
+ str r10, [r4]
+
+ ldr r2, =resume_with_mmu
+ mcr p15, 0, r9, c1, c0, 0 @ turn on MMU, etc
+
+ nop
+ nop
+ nop
+ nop
+ nop @ second-to-last before mmu
+
+ mov pc, r2 @ go back to virtual address
+
+ .ltorg
diff --git a/arch/arm/plat-s5p/Makefile b/arch/arm/plat-s5p/Makefile
index 39c242b..d04ae49 100644
--- a/arch/arm/plat-s5p/Makefile
+++ b/arch/arm/plat-s5p/Makefile
@@ -18,3 +18,5 @@ obj-y += clock.o
obj-y += irq.o
obj-$(CONFIG_S5P_EXT_INT) += irq-eint.o
+obj-$(CONFIG_PM) += pm.o
+obj-$(CONFIG_PM) += irq-pm.o
diff --git a/arch/arm/plat-s5p/include/plat/irqs.h b/arch/arm/plat-s5p/include/plat/irqs.h
index 3fb3a3a..9ffdd62 100644
--- a/arch/arm/plat-s5p/include/plat/irqs.h
+++ b/arch/arm/plat-s5p/include/plat/irqs.h
@@ -94,4 +94,6 @@
((irq) - S5P_EINT_BASE1) : \
((irq) + 16 - S5P_EINT_BASE2))
+#define IRQ_EINT_BIT(x) EINT_OFFSET(x)
+
#endif /* __ASM_PLAT_S5P_IRQS_H */
diff --git a/arch/arm/plat-s5p/irq-pm.c b/arch/arm/plat-s5p/irq-pm.c
new file mode 100644
index 0000000..03e83a3
--- /dev/null
+++ b/arch/arm/plat-s5p/irq-pm.c
@@ -0,0 +1,108 @@
+/* linux/arch/arm/plat-s5p/irq-pm.c
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Based on arch/arm/plat-s3c24xx/irq-pm.c,
+ * Copyright (c) 2003,2004 Simtec Electronics
+ * Ben Dooks <ben at simtec.co.uk>
+ * http://armlinux.simtec.co.uk/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/sysdev.h>
+
+#include <plat/cpu.h>
+#include <plat/irqs.h>
+#include <plat/pm.h>
+#include <mach/map.h>
+
+#include <mach/regs-gpio.h>
+#include <mach/regs-irq.h>
+
+/* state for IRQs over sleep */
+
+/* default is to allow for EINT0..EINT31, and IRQ_RTC_TIC, IRQ_RTC_ALARM,
+ * as wakeup sources
+ *
+ * set bit to 1 in allow bitfield to enable the wakeup settings on it
+*/
+
+unsigned long s3c_irqwake_intallow = 0x00000006L;
+unsigned long s3c_irqwake_eintallow = 0xffffffffL;
+
+int s3c_irq_wake(unsigned int irqno, unsigned int state)
+{
+ unsigned long irqbit;
+
+ switch (irqno) {
+ case IRQ_RTC_TIC:
+ case IRQ_RTC_ALARM:
+ irqbit = 1 << (irqno + 1 - IRQ_RTC_ALARM);
+ if (!state)
+ s3c_irqwake_intmask |= irqbit;
+ else
+ s3c_irqwake_intmask &= ~irqbit;
+ break;
+ default:
+ return -ENOENT;
+ }
+ return 0;
+}
+
+/* this lot should be really saved by the IRQ code */
+/* VICXADDRESSXX initilaization to be needed */
+static struct sleep_save irq_save[] = {
+ SAVE_ITEM(VA_VIC0 + VIC_INT_SELECT),
+ SAVE_ITEM(VA_VIC1 + VIC_INT_SELECT),
+
+ SAVE_ITEM(VA_VIC0 + VIC_INT_ENABLE),
+ SAVE_ITEM(VA_VIC1 + VIC_INT_ENABLE),
+
+ SAVE_ITEM(VA_VIC0 + VIC_INT_SOFT),
+ SAVE_ITEM(VA_VIC1 + VIC_INT_SOFT),
+};
+
+static struct sleep_save eint_save[] = {
+ SAVE_ITEM(S5P_EINT_CON(0)),
+ SAVE_ITEM(S5P_EINT_CON(1)),
+ SAVE_ITEM(S5P_EINT_CON(2)),
+ SAVE_ITEM(S5P_EINT_CON(3)),
+
+ SAVE_ITEM(S5P_EINT_FLTCON(0)),
+ SAVE_ITEM(S5P_EINT_FLTCON(1)),
+ SAVE_ITEM(S5P_EINT_FLTCON(2)),
+ SAVE_ITEM(S5P_EINT_FLTCON(3)),
+ SAVE_ITEM(S5P_EINT_FLTCON(4)),
+ SAVE_ITEM(S5P_EINT_FLTCON(5)),
+ SAVE_ITEM(S5P_EINT_FLTCON(6)),
+ SAVE_ITEM(S5P_EINT_FLTCON(7)),
+
+ SAVE_ITEM(S5P_EINT_MASK(0)),
+ SAVE_ITEM(S5P_EINT_MASK(1)),
+ SAVE_ITEM(S5P_EINT_MASK(2)),
+ SAVE_ITEM(S5P_EINT_MASK(3)),
+};
+
+int s3c24xx_irq_suspend(struct sys_device *dev, pm_message_t state)
+{
+ s3c_pm_do_save(eint_save, ARRAY_SIZE(eint_save));
+ s3c_pm_do_save(irq_save, ARRAY_SIZE(irq_save));
+
+ return 0;
+}
+
+int s3c24xx_irq_resume(struct sys_device *dev)
+{
+ s3c_pm_do_restore(irq_save, ARRAY_SIZE(irq_save));
+ s3c_pm_do_restore(eint_save, ARRAY_SIZE(eint_save));
+
+ return 0;
+}
+
diff --git a/arch/arm/plat-s5p/pm.c b/arch/arm/plat-s5p/pm.c
new file mode 100644
index 0000000..d592b63
--- /dev/null
+++ b/arch/arm/plat-s5p/pm.c
@@ -0,0 +1,52 @@
+/* linux/arch/arm/plat-s5p/pm.c
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * S5P Power Manager (Suspend-To-RAM) support
+ *
+ * Based on arch/arm/plat-s3c24xx/pm.c
+ * Copyright (c) 2004,2006 Simtec Electronics
+ * Ben Dooks <ben at 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/suspend.h>
+#include <plat/pm.h>
+
+#define PFX "s5p pm: "
+
+/* 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 s3c_pm_check_resume_pin(unsigned int pin, unsigned int irqoffs)
+{
+ /* nothing here yet */
+}
+
+/* s3c_pm_configure_extint
+ *
+ * configure all external interrupt pins
+*/
+
+void s3c_pm_configure_extint(void)
+{
+ /* nothing here yet */
+}
+
+void s3c_pm_restore_core(void)
+{
+ /* nothing here yet */
+}
+
+void s3c_pm_save_core(void)
+{
+ /* nothing here yet */
+}
+
diff --git a/arch/arm/plat-samsung/pm-gpio.c b/arch/arm/plat-samsung/pm-gpio.c
index 7df03f8..9652820 100644
--- a/arch/arm/plat-samsung/pm-gpio.c
+++ b/arch/arm/plat-samsung/pm-gpio.c
@@ -192,7 +192,7 @@ struct s3c_gpio_pm s3c_gpio_pm_2bit = {
.resume = s3c_gpio_pm_2bit_resume,
};
-#ifdef CONFIG_ARCH_S3C64XX
+#if defined(CONFIG_ARCH_S3C64XX) || defined(CONFIG_PLAT_S5P)
static void s3c_gpio_pm_4bit_save(struct s3c_gpio_chip *chip)
{
chip->pm_save[1] = __raw_readl(chip->base + OFFS_CON);
@@ -302,7 +302,7 @@ struct s3c_gpio_pm s3c_gpio_pm_4bit = {
.save = s3c_gpio_pm_4bit_save,
.resume = s3c_gpio_pm_4bit_resume,
};
-#endif /* CONFIG_ARCH_S3C64XX */
+#endif /* CONFIG_ARCH_S3C64XX || CONFIG_PLAT_S5P */
/**
* s3c_pm_save_gpio() - save gpio chip data for suspend
--
1.6.2.5
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