[PATCH v2] ARM: S5PV210: Add Power Management Support
Ben Dooks
ben-linux at fluff.org
Mon May 31 22:03:29 EDT 2010
On Tue, Jun 01, 2010 at 10:36:04AM +0900, Kukjin Kim wrote:
> 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),
doesn't the vic driver do this for you? if not, then would be better
to change the vic to fix this.
> +};
> +
> +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));
why .word? if there's a compiler problem then make a comment about
what instruction is being synthesised and why.
> + /* 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 */
hmm, where is this being added?
also, a better description on what it is doing would be better.
> + 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.
i'd fix this typo.
> + * 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 */
do you mean mmu page table?
> + 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
>
--
--
Ben
Q: What's a light-year?
A: One-third less calories than a regular year.
More information about the linux-arm-kernel
mailing list