select HAVE_S3C_RTC if RTC_CLASS
select PINCTRL
select PINCTRL_EXYNOS
+ select SOC_SAMSUNG
help
Samsung S5PV210/S5PC110 series based systems
default y
select GENERIC_IRQ_CHIP
select NO_IOPORT_MAP
+ select SOC_SAMSUNG
help
Base platform code for all Samsung SoC based systems
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
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
#define __PLAT_SAMSUNG_PM_COMMON_H __FILE__
#include <linux/irq.h>
+#include <linux/soc/samsung/s3c-pm.h>
/* sleep save info */
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
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-//
-// originally in linux/arch/arm/plat-s3c24xx/pm.c
-//
-// Copyright (c) 2004-2008 Simtec Electronics
-// http://armlinux.simtec.co.uk
-// Ben Dooks <ben@simtec.co.uk>
-//
-// S3C Power Mangament - suspend/resume memory corruption check.
-
-#include <linux/kernel.h>
-#include <linux/suspend.h>
-#include <linux/init.h>
-#include <linux/crc32.h>
-#include <linux/ioport.h>
-#include <linux/slab.h>
-
-#include <plat/pm-common.h>
-
-#if CONFIG_SAMSUNG_PM_CHECK_CHUNKSIZE < 1
-#error CONFIG_SAMSUNG_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_SAMSUNG_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_SAMSUNG_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 through 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_SYSTEM_RAM)
- == IORESOURCE_SYSTEM_RAM) {
- 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)resource_size(res);
-
- 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 contains 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)
-{
- unsigned long addr;
- unsigned long left;
- void *stkpage;
- void *ptr;
- u32 calc;
-
- stkpage = (void *)((u32)&calc & ~PAGE_MASK);
-
- 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, stkpage, 4096)) {
- S3C_PMDBG("skipping %08lx, has stack in\n", addr);
- goto skip_check;
- }
-
- if (in_region(ptr, left, crcs, crc_size)) {
- S3C_PMDBG("skipping %08lx, has crc 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);
-}
-
-/**
- * s3c_pm_check_cleanup() - free memory resources
- *
- * Free the resources that where allocated by the suspend
- * memory check code. We do this separately from the
- * s3c_pm_check_restore() function as we cannot call any
- * functions that might sleep during that resume.
- */
-void s3c_pm_check_cleanup(void)
-{
- kfree(crcs);
- crcs = NULL;
-}
-
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-//
-// Copyright (C) 2013 Samsung Electronics Co., Ltd.
-// Tomasz Figa <t.figa@samsung.com>
-// Copyright (C) 2008 Openmoko, Inc.
-// Copyright (C) 2004-2008 Simtec Electronics
-// Ben Dooks <ben@simtec.co.uk>
-// http://armlinux.simtec.co.uk/
-//
-// Samsung common power management (suspend to RAM) debug support
-
-#include <linux/serial_core.h>
-#include <linux/serial_s3c.h>
-#include <linux/io.h>
-
-#include <asm/mach/map.h>
-
-#include <plat/cpu.h>
-#include <plat/pm-common.h>
-
-static struct pm_uart_save uart_save;
-
-extern void printascii(const char *);
-
-void s3c_pm_dbg(const char *fmt, ...)
-{
- va_list va;
- char buff[256];
-
- va_start(va, fmt);
- vsnprintf(buff, sizeof(buff), fmt, va);
- va_end(va);
-
- printascii(buff);
-}
-
-static inline void __iomem *s3c_pm_uart_base(void)
-{
- unsigned long paddr;
- unsigned long vaddr;
-
- debug_ll_addr(&paddr, &vaddr);
-
- return (void __iomem *)vaddr;
-}
-
-void s3c_pm_save_uarts(bool is_s3c2410)
-{
- void __iomem *regs = s3c_pm_uart_base();
- struct pm_uart_save *save = &uart_save;
-
- 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 (!is_s3c2410)
- save->udivslot = __raw_readl(regs + S3C2443_DIVSLOT);
-
- S3C_PMDBG("UART[%p]: ULCON=%04x, UCON=%04x, UFCON=%04x, UBRDIV=%04x\n",
- regs, save->ulcon, save->ucon, save->ufcon, save->ubrdiv);
-}
-
-void s3c_pm_restore_uarts(bool is_s3c2410)
-{
- void __iomem *regs = s3c_pm_uart_base();
- struct pm_uart_save *save = &uart_save;
-
- 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 (!is_s3c2410)
- __raw_writel(save->udivslot, regs + S3C2443_DIVSLOT);
-}
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
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
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+//
+// originally in linux/arch/arm/plat-s3c24xx/pm.c
+//
+// Copyright (c) 2004-2008 Simtec Electronics
+// http://armlinux.simtec.co.uk
+// Ben Dooks <ben@simtec.co.uk>
+//
+// S3C Power Mangament - suspend/resume memory corruption check.
+
+#include <linux/kernel.h>
+#include <linux/suspend.h>
+#include <linux/init.h>
+#include <linux/crc32.h>
+#include <linux/ioport.h>
+#include <linux/slab.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
+#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_SAMSUNG_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_SAMSUNG_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 through 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_SYSTEM_RAM)
+ == IORESOURCE_SYSTEM_RAM) {
+ 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)resource_size(res);
+
+ 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 contains 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)
+{
+ unsigned long addr;
+ unsigned long left;
+ void *stkpage;
+ void *ptr;
+ u32 calc;
+
+ stkpage = (void *)((u32)&calc & ~PAGE_MASK);
+
+ 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, stkpage, 4096)) {
+ S3C_PMDBG("skipping %08lx, has stack in\n", addr);
+ goto skip_check;
+ }
+
+ if (in_region(ptr, left, crcs, crc_size)) {
+ S3C_PMDBG("skipping %08lx, has crc 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);
+}
+
+/**
+ * s3c_pm_check_cleanup() - free memory resources
+ *
+ * Free the resources that where allocated by the suspend
+ * memory check code. We do this separately from the
+ * s3c_pm_check_restore() function as we cannot call any
+ * functions that might sleep during that resume.
+ */
+void s3c_pm_check_cleanup(void)
+{
+ kfree(crcs);
+ crcs = NULL;
+}
+
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (C) 2013 Samsung Electronics Co., Ltd.
+// Tomasz Figa <t.figa@samsung.com>
+// Copyright (C) 2008 Openmoko, Inc.
+// Copyright (C) 2004-2008 Simtec Electronics
+// Ben Dooks <ben@simtec.co.uk>
+// http://armlinux.simtec.co.uk/
+//
+// Samsung common power management (suspend to RAM) debug support
+
+#include <linux/serial_core.h>
+#include <linux/serial_s3c.h>
+#include <linux/io.h>
+
+#include <asm/mach/map.h>
+
+#include <linux/soc/samsung/s3c-pm.h>
+
+static struct pm_uart_save uart_save;
+
+extern void printascii(const char *);
+
+void s3c_pm_dbg(const char *fmt, ...)
+{
+ va_list va;
+ char buff[256];
+
+ va_start(va, fmt);
+ vsnprintf(buff, sizeof(buff), fmt, va);
+ va_end(va);
+
+ printascii(buff);
+}
+
+static inline void __iomem *s3c_pm_uart_base(void)
+{
+ unsigned long paddr;
+ unsigned long vaddr;
+
+ debug_ll_addr(&paddr, &vaddr);
+
+ return (void __iomem *)vaddr;
+}
+
+void s3c_pm_save_uarts(bool is_s3c2410)
+{
+ void __iomem *regs = s3c_pm_uart_base();
+ struct pm_uart_save *save = &uart_save;
+
+ 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 (!is_s3c2410)
+ save->udivslot = __raw_readl(regs + S3C2443_DIVSLOT);
+
+ S3C_PMDBG("UART[%p]: ULCON=%04x, UCON=%04x, UFCON=%04x, UBRDIV=%04x\n",
+ regs, save->ulcon, save->ucon, save->ufcon, save->ubrdiv);
+}
+
+void s3c_pm_restore_uarts(bool is_s3c2410)
+{
+ void __iomem *regs = s3c_pm_uart_base();
+ struct pm_uart_save *save = &uart_save;
+
+ 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 (!is_s3c2410)
+ __raw_writel(save->udivslot, regs + S3C2443_DIVSLOT);
+}
--- /dev/null
+/* 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
projects / linux-2.6-microblaze.git / commitdiff