korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-24 20:54:10 +08:00
Code Issues Packages Projects Releases Wiki Activity

ARM: samsung: move pm check code to drivers/soc

Browse Source 
This is the only part of plat-samsung that is really
shared between the s3c and s5p ports. Moving it to
drivers/soc/ lets us make them completely independent.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20200806182059.2431-16-krzk@kernel.org
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
This commit is contained in:
Arnd Bergmann 2020-08-06 20:20:33 +02:00 committed by Krzysztof Kozlowski
parent cb6c03019c
commit 17132da70e
9 changed files with 139 additions and 123 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm/mach-s5pv210/Kconfig
View File

@ -17,6 +17,7 @@ config ARCH_S5PV210
select HAVE_S3C_RTC if RTC_CLASS
select PINCTRL
select PINCTRL_EXYNOS
select SOC_SAMSUNG
help
Samsung S5PV210/S5PC110 series based systems

49
arch/arm/plat-samsung/Kconfig
View File

@ -8,6 +8,7 @@ config PLAT_SAMSUNG
default y
select GENERIC_IRQ_CHIP
select NO_IOPORT_MAP
select SOC_SAMSUNG
help
Base platform code for all Samsung SoC based systems
@ -234,54 +235,6 @@ config SAMSUNG_PM_GPIO
pinctrl-samsung driver.
endif
comment "Power management"
config SAMSUNG_PM_DEBUG
bool "Samsung PM Suspend debug"
depends on PM && DEBUG_KERNEL
depends on PLAT_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
depends on DEBUG_S3C24XX_UART || DEBUG_S3C2410_UART
help
Say Y here if you want verbose debugging from the PM Suspend and
Resume code. See <file:Documentation/arm/samsung-s3c24xx/suspend.rst>
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 SAMSUNG_PM_CHECK
bool "S3C2410 PM Suspend Memory CRC"
depends on PM && (PLAT_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210)
select CRC32
help
Enable the PM code's memory area checksum over sleep. This option
will generate CRCs of all blocks of memory, and store them before
going to sleep. The blocks are then checked on resume for any
errors.
Note, this can take several seconds depending on memory size
and CPU speed.
See <file:Documentation/arm/samsung-s3c24xx/suspend.rst>
config SAMSUNG_PM_CHECK_CHUNKSIZE
int "S3C2410 PM Suspend CRC Chunksize (KiB)"
depends on PM && SAMSUNG_PM_CHECK
default 64
help
Set the chunksize in Kilobytes of the CRC for checking memory
corruption over suspend and resume. A smaller value will mean that
the CRC data block will take more memory, but will identify any
faults with better precision.
See <file:Documentation/arm/samsung-s3c24xx/suspend.rst>
config SAMSUNG_WAKEMASK
bool
depends on PM

2
arch/arm/plat-samsung/Makefile
View File

@ -27,7 +27,5 @@ obj-$(CONFIG_GPIO_SAMSUNG) += gpio-samsung.o
obj-$(CONFIG_PM_SLEEP) += pm-common.o
obj-$(CONFIG_SAMSUNG_PM) += pm.o
obj-$(CONFIG_SAMSUNG_PM_GPIO) += pm-gpio.o
obj-$(CONFIG_SAMSUNG_PM_CHECK) += pm-check.o
obj-$(CONFIG_SAMSUNG_PM_DEBUG) += pm-debug.o
obj-$(CONFIG_SAMSUNG_WAKEMASK) += wakeup-mask.o

70
arch/arm/plat-samsung/include/plat/pm-common.h
View File

@ -11,6 +11,7 @@
#define __PLAT_SAMSUNG_PM_COMMON_H __FILE__
#include <linux/irq.h>
#include <linux/soc/samsung/s3c-pm.h>
/* sleep save info */
@ -36,73 +37,4 @@ extern void s3c_pm_do_save(struct sleep_save *ptr, int count);
extern void s3c_pm_do_restore(const struct sleep_save *ptr, int count);
extern void s3c_pm_do_restore_core(const struct sleep_save *ptr, int count);
/* PM debug functions */
/**
* struct pm_uart_save - save block for core UART
* @ulcon: Save value for S3C2410_ULCON
* @ucon: Save value for S3C2410_UCON
* @ufcon: Save value for S3C2410_UFCON
* @umcon: Save value for S3C2410_UMCON
* @ubrdiv: Save value for S3C2410_UBRDIV
*
* Save block for UART registers to be held over sleep and restored if they
* are needed (say by debug).
*/
struct pm_uart_save {
u32 ulcon;
u32 ucon;
u32 ufcon;
u32 umcon;
u32 ubrdiv;
u32 udivslot;
};
#ifdef CONFIG_SAMSUNG_PM_DEBUG
/**
* s3c_pm_dbg() - low level debug function for use in suspend/resume.
* @msg: The message to print.
*
* This function is used mainly to debug the resume process before the system
* can rely on printk/console output. It uses the low-level debugging output
* routine printascii() to do its work.
*/
extern void s3c_pm_dbg(const char *msg, ...);
#define S3C_PMDBG(fmt...) s3c_pm_dbg(fmt)
extern void s3c_pm_save_uarts(bool is_s3c24xx);
extern void s3c_pm_restore_uarts(bool is_s3c24xx);
#ifdef CONFIG_ARCH_S3C64XX
extern void s3c_pm_arch_update_uart(void __iomem *regs,
struct pm_uart_save *save);
#else
static inline void
s3c_pm_arch_update_uart(void __iomem *regs, struct pm_uart_save *save)
{
}
#endif
#else
#define S3C_PMDBG(fmt...) pr_debug(fmt)
static inline void s3c_pm_save_uarts(bool is_s3c24xx) { }
static inline void s3c_pm_restore_uarts(bool is_s3c24xx) { }
#endif
/* suspend memory checking */
#ifdef CONFIG_SAMSUNG_PM_CHECK
extern void s3c_pm_check_prepare(void);
extern void s3c_pm_check_restore(void);
extern void s3c_pm_check_cleanup(void);
extern void s3c_pm_check_store(void);
#else
#define s3c_pm_check_prepare() do { } while (0)
#define s3c_pm_check_restore() do { } while (0)
#define s3c_pm_check_cleanup() do { } while (0)
#define s3c_pm_check_store() do { } while (0)
#endif
#endif

48
drivers/soc/samsung/Kconfig
View File

@ -35,7 +35,53 @@ config EXYNOS_PMU_ARM_DRIVERS
config EXYNOS_PM_DOMAINS
bool "Exynos PM domains" if COMPILE_TEST
depends on PM_GENERIC_DOMAINS || COMPILE_TEST
depends on (ARCH_EXYNOS && PM_GENERIC_DOMAINS) || COMPILE_TEST
config SAMSUNG_PM_DEBUG
bool "Samsung PM Suspend debug"
depends on PM && DEBUG_KERNEL
depends on PLAT_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
depends on DEBUG_S3C24XX_UART || DEBUG_S3C2410_UART
help
Say Y here if you want verbose debugging from the PM Suspend and
Resume code. See <file:Documentation/arm/samsung-s3c24xx/suspend.rst>
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 SAMSUNG_PM_CHECK
bool "S3C2410 PM Suspend Memory CRC"
depends on PM && (PLAT_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210)
select CRC32
help
Enable the PM code's memory area checksum over sleep. This option
will generate CRCs of all blocks of memory, and store them before
going to sleep. The blocks are then checked on resume for any
errors.
Note, this can take several seconds depending on memory size
and CPU speed.
See <file:Documentation/arm/samsung-s3c24xx/suspend.rst>
config SAMSUNG_PM_CHECK_CHUNKSIZE
int "S3C2410 PM Suspend CRC Chunksize (KiB)"
depends on PM && SAMSUNG_PM_CHECK
default 64
help
Set the chunksize in Kilobytes of the CRC for checking memory
corruption over suspend and resume. A smaller value will mean that
the CRC data block will take more memory, but will identify any
faults with better precision.
See <file:Documentation/arm/samsung-s3c24xx/suspend.rst>
config EXYNOS_REGULATOR_COUPLER
bool "Exynos SoC Regulator Coupler" if COMPILE_TEST

3
drivers/soc/samsung/Makefile
View File

@ -10,3 +10,6 @@ obj-$(CONFIG_EXYNOS_PMU_ARM_DRIVERS) += exynos3250-pmu.o exynos4-pmu.o \
exynos5250-pmu.o exynos5420-pmu.o
obj-$(CONFIG_EXYNOS_PM_DOMAINS) += pm_domains.o
obj-$(CONFIG_EXYNOS_REGULATOR_COUPLER) += exynos-regulator-coupler.o
obj-$(CONFIG_SAMSUNG_PM_CHECK) += s3c-pm-check.o
obj-$(CONFIG_SAMSUNG_PM_DEBUG) += s3c-pm-debug.o

2
arch/arm/plat-samsung/pm-check.c → drivers/soc/samsung/s3c-pm-check.c
View File

@ -15,7 +15,7 @@
#include <linux/ioport.h>
#include <linux/slab.h>
#include <plat/pm-common.h>
#include <linux/soc/samsung/s3c-pm.h>
#if CONFIG_SAMSUNG_PM_CHECK_CHUNKSIZE < 1
#error CONFIG_SAMSUNG_PM_CHECK_CHUNKSIZE must be a positive non-zero value

3
arch/arm/plat-samsung/pm-debug.c → drivers/soc/samsung/s3c-pm-debug.c
View File

@ -15,8 +15,7 @@
#include <asm/mach/map.h>
#include <plat/cpu.h>
#include <plat/pm-common.h>
#include <linux/soc/samsung/s3c-pm.h>
static struct pm_uart_save uart_save;

84
include/linux/soc/samsung/s3c-pm.h Normal file
View File

@ -0,0 +1,84 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2013 Samsung Electronics Co., Ltd.
* Tomasz Figa <t.figa@samsung.com>
* Copyright (c) 2004 Simtec Electronics
* http://armlinux.simtec.co.uk/
* Written by Ben Dooks, <ben@simtec.co.uk>
*/
#ifndef __LINUX_SOC_SAMSUNG_S3C_PM_H
#define __LINUX_SOC_SAMSUNG_S3C_PM_H __FILE__
#include <linux/types.h>
/* PM debug functions */
/**
* struct pm_uart_save - save block for core UART
* @ulcon: Save value for S3C2410_ULCON
* @ucon: Save value for S3C2410_UCON
* @ufcon: Save value for S3C2410_UFCON
* @umcon: Save value for S3C2410_UMCON
* @ubrdiv: Save value for S3C2410_UBRDIV
*
* Save block for UART registers to be held over sleep and restored if they
* are needed (say by debug).
*/
struct pm_uart_save {
u32 ulcon;
u32 ucon;
u32 ufcon;
u32 umcon;
u32 ubrdiv;
u32 udivslot;
};
#ifdef CONFIG_SAMSUNG_PM_DEBUG
/**
* s3c_pm_dbg() - low level debug function for use in suspend/resume.
* @msg: The message to print.
*
* This function is used mainly to debug the resume process before the system
* can rely on printk/console output. It uses the low-level debugging output
* routine printascii() to do its work.
*/
extern void s3c_pm_dbg(const char *msg, ...);
#define S3C_PMDBG(fmt...) s3c_pm_dbg(fmt)
extern void s3c_pm_save_uarts(bool is_s3c24xx);
extern void s3c_pm_restore_uarts(bool is_s3c24xx);
#ifdef CONFIG_ARCH_S3C64XX
extern void s3c_pm_arch_update_uart(void __iomem *regs,
struct pm_uart_save *save);
#else
static inline void
s3c_pm_arch_update_uart(void __iomem *regs, struct pm_uart_save *save)
{
}
#endif
#else
#define S3C_PMDBG(fmt...) pr_debug(fmt)
static inline void s3c_pm_save_uarts(bool is_s3c24xx) { }
static inline void s3c_pm_restore_uarts(bool is_s3c24xx) { }
#endif
/* suspend memory checking */
#ifdef CONFIG_SAMSUNG_PM_CHECK
extern void s3c_pm_check_prepare(void);
extern void s3c_pm_check_restore(void);
extern void s3c_pm_check_cleanup(void);
extern void s3c_pm_check_store(void);
#else
#define s3c_pm_check_prepare() do { } while (0)
#define s3c_pm_check_restore() do { } while (0)
#define s3c_pm_check_cleanup() do { } while (0)
#define s3c_pm_check_store() do { } while (0)
#endif
#endif