diff options
Diffstat (limited to 'arch/arm/plat-samsung')
-rw-r--r-- | arch/arm/plat-samsung/Makefile | 2 | ||||
-rw-r--r-- | arch/arm/plat-samsung/clock.c | 3 | ||||
-rw-r--r-- | arch/arm/plat-samsung/cpu.c | 7 | ||||
-rw-r--r-- | arch/arm/plat-samsung/devs.c | 14 | ||||
-rw-r--r-- | arch/arm/plat-samsung/include/plat/cpu.h | 7 | ||||
-rw-r--r-- | arch/arm/plat-samsung/include/plat/pm-common.h | 110 | ||||
-rw-r--r-- | arch/arm/plat-samsung/include/plat/pm.h | 80 | ||||
-rw-r--r-- | arch/arm/plat-samsung/include/plat/regs-serial.h | 1 | ||||
-rw-r--r-- | arch/arm/plat-samsung/include/plat/rtc-core.h | 27 | ||||
-rw-r--r-- | arch/arm/plat-samsung/include/plat/uncompress.h | 175 | ||||
-rw-r--r-- | arch/arm/plat-samsung/init.c | 5 | ||||
-rw-r--r-- | arch/arm/plat-samsung/pm-check.c | 2 | ||||
-rw-r--r-- | arch/arm/plat-samsung/pm-common.c | 75 | ||||
-rw-r--r-- | arch/arm/plat-samsung/pm-debug.c | 97 | ||||
-rw-r--r-- | arch/arm/plat-samsung/pm-gpio.c | 5 | ||||
-rw-r--r-- | arch/arm/plat-samsung/pm.c | 148 | ||||
-rw-r--r-- | arch/arm/plat-samsung/s5p-dev-uart.c | 1 | ||||
-rw-r--r-- | arch/arm/plat-samsung/s5p-irq-pm.c | 13 | ||||
-rw-r--r-- | arch/arm/plat-samsung/s5p-sleep.S | 43 |
19 files changed, 301 insertions, 514 deletions
diff --git a/arch/arm/plat-samsung/Makefile b/arch/arm/plat-samsung/Makefile index 9267d29..25c826e 100644 --- a/arch/arm/plat-samsung/Makefile +++ b/arch/arm/plat-samsung/Makefile @@ -47,9 +47,11 @@ obj-$(CONFIG_SAMSUNG_DMADEV) += dma-ops.o # PM support +obj-$(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-$(CONFIG_SAMSUNG_WAKEMASK) += wakeup-mask.o obj-$(CONFIG_SAMSUNG_WDT_RESET) += watchdog-reset.o diff --git a/arch/arm/plat-samsung/clock.c b/arch/arm/plat-samsung/clock.c index 47c9fad..d103ac1 100644 --- a/arch/arm/plat-samsung/clock.c +++ b/arch/arm/plat-samsung/clock.c @@ -43,7 +43,6 @@ #include <linux/debugfs.h> #endif -#include <mach/hardware.h> #include <asm/irq.h> #include <plat/cpu-freq.h> @@ -52,7 +51,7 @@ #include <plat/cpu.h> #include <linux/serial_core.h> -#include <plat/regs-serial.h> /* for s3c24xx_uart_devs */ +#include <linux/serial_s3c.h> /* for s3c24xx_uart_devs */ /* clock information */ diff --git a/arch/arm/plat-samsung/cpu.c b/arch/arm/plat-samsung/cpu.c index 46b426e..364963a 100644 --- a/arch/arm/plat-samsung/cpu.c +++ b/arch/arm/plat-samsung/cpu.c @@ -28,13 +28,6 @@ unsigned int samsung_rev(void) } EXPORT_SYMBOL(samsung_rev); -void __init s3c24xx_init_cpu(void) -{ - /* nothing here yet */ - - samsung_cpu_rev = 0; -} - void __init s3c64xx_init_cpu(void) { samsung_cpu_id = __raw_readl(S3C_VA_SYS + 0x118); diff --git a/arch/arm/plat-samsung/devs.c b/arch/arm/plat-samsung/devs.c index ac07e87..ead4f1c 100644 --- a/arch/arm/plat-samsung/devs.c +++ b/arch/arm/plat-samsung/devs.c @@ -18,6 +18,7 @@ #include <linux/timer.h> #include <linux/init.h> #include <linux/serial_core.h> +#include <linux/serial_s3c.h> #include <linux/platform_device.h> #include <linux/io.h> #include <linux/slab.h> @@ -30,6 +31,7 @@ #include <linux/mtd/partitions.h> #include <linux/mmc/host.h> #include <linux/ioport.h> +#include <linux/sizes.h> #include <linux/platform_data/s3c-hsudc.h> #include <linux/platform_data/s3c-hsotg.h> #include <linux/platform_data/dma-s3c24xx.h> @@ -41,7 +43,6 @@ #include <asm/mach/map.h> #include <asm/mach/irq.h> -#include <mach/hardware.h> #include <mach/dma.h> #include <mach/irqs.h> #include <mach/map.h> @@ -64,7 +65,6 @@ #include <linux/platform_data/usb-s3c2410_udc.h> #include <linux/platform_data/usb-ohci-s3c2410.h> #include <plat/usb-phy.h> -#include <plat/regs-serial.h> #include <plat/regs-spi.h> #include <linux/platform_data/spi-s3c64xx.h> @@ -744,10 +744,7 @@ void __init s5p_i2c_hdmiphy_set_platdata(struct s3c2410_platform_i2c *pd) if (!pd) { pd = &default_i2c_data; - if (soc_is_exynos4210() || - soc_is_exynos4212() || soc_is_exynos4412()) - pd->bus_num = 8; - else if (soc_is_s5pv210()) + if (soc_is_s5pv210()) pd->bus_num = 3; else pd->bus_num = 0; @@ -764,10 +761,7 @@ void __init s5p_hdmi_set_platdata(struct i2c_board_info *hdmiphy_info, { struct s5p_hdmi_platform_data *pd = &s5p_hdmi_def_platdata; - if (soc_is_exynos4210() || - soc_is_exynos4212() || soc_is_exynos4412()) - pd->hdmiphy_bus = 8; - else if (soc_is_s5pv210()) + if (soc_is_s5pv210()) pd->hdmiphy_bus = 3; else pd->hdmiphy_bus = 0; diff --git a/arch/arm/plat-samsung/include/plat/cpu.h b/arch/arm/plat-samsung/include/plat/cpu.h index 4763f11..5992b8d 100644 --- a/arch/arm/plat-samsung/include/plat/cpu.h +++ b/arch/arm/plat-samsung/include/plat/cpu.h @@ -20,6 +20,9 @@ extern unsigned long samsung_cpu_id; +#define S3C2410_CPU_ID 0x32410000 +#define S3C2410_CPU_MASK 0xFFFFFFFF + #define S3C24XX_CPU_ID 0x32400000 #define S3C24XX_CPU_MASK 0xFFF00000 @@ -56,6 +59,7 @@ static inline int is_samsung_##name(void) \ return ((samsung_cpu_id & mask) == (id & mask)); \ } +IS_SAMSUNG_CPU(s3c2410, S3C2410_CPU_ID, S3C2410_CPU_MASK) IS_SAMSUNG_CPU(s3c24xx, S3C24XX_CPU_ID, S3C24XX_CPU_MASK) IS_SAMSUNG_CPU(s3c2412, S3C2412_CPU_ID, S3C2412_CPU_MASK) IS_SAMSUNG_CPU(s3c6400, S3C6400_CPU_ID, S3C64XX_CPU_MASK) @@ -76,8 +80,10 @@ IS_SAMSUNG_CPU(exynos5440, EXYNOS5440_SOC_ID, EXYNOS5_SOC_MASK) defined(CONFIG_CPU_S3C2442) || defined(CONFIG_CPU_S3C244X) || \ defined(CONFIG_CPU_S3C2443) # define soc_is_s3c24xx() is_samsung_s3c24xx() +# define soc_is_s3c2410() is_samsung_s3c2410() #else # define soc_is_s3c24xx() 0 +# define soc_is_s3c2410() 0 #endif #if defined(CONFIG_CPU_S3C2412) @@ -203,7 +209,6 @@ extern void s5p_init_irq(u32 *vic, u32 num_vic); extern void s3c24xx_init_io(struct map_desc *mach_desc, int size); -extern void s3c24xx_init_cpu(void); extern void s3c64xx_init_cpu(void); extern void s5p_init_cpu(void __iomem *cpuid_addr); diff --git a/arch/arm/plat-samsung/include/plat/pm-common.h b/arch/arm/plat-samsung/include/plat/pm-common.h new file mode 100644 index 0000000..8705f9e --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/pm-common.h @@ -0,0 +1,110 @@ +/* + * 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> + * + * 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_SAMSUNG_PM_COMMON_H +#define __PLAT_SAMSUNG_PM_COMMON_H __FILE__ + +#include <linux/irq.h> + +/* sleep save info */ + +/** + * struct sleep_save - save information for shared peripherals. + * @reg: Pointer to the register to save. + * @val: Holder for the value saved from reg. + * + * This describes a list of registers which is used by the pm core and + * other subsystem to save and restore register values over suspend. + */ +struct sleep_save { + void __iomem *reg; + unsigned long val; +}; + +#define SAVE_ITEM(x) \ + { .reg = (x) } + +/* helper functions to save/restore lists of registers. */ + +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, ...); + +/** + * s3c_pm_debug_init() - suspend/resume low level debug initialization. + * @base: Virtual base of UART to use for suspend/resume debugging. + * + * This function needs to be called before S3C_PMDBG() can be used, to set up + * UART port base address and configuration. + */ +extern void s3c_pm_debug_init(void); + +#define S3C_PMDBG(fmt...) s3c_pm_dbg(fmt) + +extern void s3c_pm_save_uarts(void); +extern void s3c_pm_restore_uarts(void); +#else +#define S3C_PMDBG(fmt...) pr_debug(fmt) +#define s3c_pm_debug_init() do { } while (0) + +static inline void s3c_pm_save_uarts(void) { } +static inline void s3c_pm_restore_uarts(void) { } +#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 diff --git a/arch/arm/plat-samsung/include/plat/pm.h b/arch/arm/plat-samsung/include/plat/pm.h index ff6063f..e17d871 100644 --- a/arch/arm/plat-samsung/include/plat/pm.h +++ b/arch/arm/plat-samsung/include/plat/pm.h @@ -15,7 +15,7 @@ * management */ -#include <linux/irq.h> +#include <plat/pm-common.h> struct device; @@ -54,56 +54,10 @@ extern int (*pm_cpu_sleep)(unsigned long); extern unsigned long s3c_pm_flags; -extern unsigned char pm_uart_udivslot; /* true to save UART UDIVSLOT */ - /* from sleep.S */ extern int s3c2410_cpu_suspend(unsigned long); -/* sleep save info */ - -/** - * struct sleep_save - save information for shared peripherals. - * @reg: Pointer to the register to save. - * @val: Holder for the value saved from reg. - * - * This describes a list of registers which is used by the pm core and - * other subsystem to save and restore register values over suspend. - */ -struct sleep_save { - void __iomem *reg; - unsigned long val; -}; - -#define SAVE_ITEM(x) \ - { .reg = (x) } - -/** - * 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; -}; - -/* helper functions to save/restore lists of registers. */ - -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); - #ifdef CONFIG_SAMSUNG_PM extern int s3c_irq_wake(struct irq_data *data, unsigned int state); extern int s3c_irqext_wake(struct irq_data *data, unsigned int state); @@ -114,24 +68,6 @@ extern void s3c_cpu_resume(void); #define s3c_cpu_resume NULL #endif -/* PM debug functions */ - -#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) -#else -#define S3C_PMDBG(fmt...) printk(KERN_DEBUG fmt) -#endif - #ifdef CONFIG_S3C_PM_DEBUG_LED_SMDK /** * s3c_pm_debug_smdkled() - Debug PM suspend/resume via SMDK Board LEDs @@ -144,20 +80,6 @@ extern void s3c_pm_debug_smdkled(u32 set, u32 clear); static inline void s3c_pm_debug_smdkled(u32 set, u32 clear) { } #endif /* CONFIG_S3C_PM_DEBUG_LED_SMDK */ -/* 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 - /** * s3c_pm_configure_extint() - ensure pins are correctly set for IRQ * diff --git a/arch/arm/plat-samsung/include/plat/regs-serial.h b/arch/arm/plat-samsung/include/plat/regs-serial.h deleted file mode 100644 index f05f2af..0000000 --- a/arch/arm/plat-samsung/include/plat/regs-serial.h +++ /dev/null @@ -1 +0,0 @@ -#include <linux/serial_s3c.h> diff --git a/arch/arm/plat-samsung/include/plat/rtc-core.h b/arch/arm/plat-samsung/include/plat/rtc-core.h deleted file mode 100644 index 7b542f7..0000000 --- a/arch/arm/plat-samsung/include/plat/rtc-core.h +++ /dev/null @@ -1,27 +0,0 @@ -/* linux/arch/arm/plat-samsung/include/plat/rtc-core.h - * - * Copyright (c) 2011 Heiko Stuebner <heiko@sntech.de> - * - * Samsung RTC Controller core functions - * - * 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 __ASM_PLAT_RTC_CORE_H -#define __ASM_PLAT_RTC_CORE_H __FILE__ - -/* These functions are only for use with the core support code, such as - * the cpu specific initialisation code - */ - -/* re-define device name depending on support. */ -static inline void s3c_rtc_setname(char *name) -{ -#if defined(CONFIG_S3C_DEV_RTC) || defined(CONFIG_PLAT_S3C24XX) - s3c_device_rtc.name = name; -#endif -} - -#endif /* __ASM_PLAT_RTC_CORE_H */ diff --git a/arch/arm/plat-samsung/include/plat/uncompress.h b/arch/arm/plat-samsung/include/plat/uncompress.h deleted file mode 100644 index f48dc0a..0000000 --- a/arch/arm/plat-samsung/include/plat/uncompress.h +++ /dev/null @@ -1,175 +0,0 @@ -/* arch/arm/plat-samsung/include/plat/uncompress.h - * - * Copyright 2003, 2007 Simtec Electronics - * http://armlinux.simtec.co.uk/ - * Ben Dooks <ben@simtec.co.uk> - * - * S3C - uncompress 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. -*/ - -#ifndef __ASM_PLAT_UNCOMPRESS_H -#define __ASM_PLAT_UNCOMPRESS_H - -typedef unsigned int upf_t; /* cannot include linux/serial_core.h */ - -/* uart setup */ - -unsigned int fifo_mask; -unsigned int fifo_max; - -volatile u8 *uart_base; - -/* forward declerations */ - -static void arch_detect_cpu(void); - -/* defines for UART registers */ - -#include <plat/regs-serial.h> - -/* working in physical space... */ -#define S3C_WDOGREG(x) ((S3C_PA_WDT + (x))) - -#define S3C2410_WTCON S3C_WDOGREG(0x00) -#define S3C2410_WTDAT S3C_WDOGREG(0x04) -#define S3C2410_WTCNT S3C_WDOGREG(0x08) - -#define S3C2410_WTCON_RSTEN (1 << 0) -#define S3C2410_WTCON_ENABLE (1 << 5) - -#define S3C2410_WTCON_DIV128 (3 << 3) - -#define S3C2410_WTCON_PRESCALE(x) ((x) << 8) - -/* how many bytes we allow into the FIFO at a time in FIFO mode */ -#define FIFO_MAX (14) - -static __inline__ void -uart_wr(unsigned int reg, unsigned int val) -{ - volatile unsigned int *ptr; - - ptr = (volatile unsigned int *)(reg + uart_base); - *ptr = val; -} - -static __inline__ unsigned int -uart_rd(unsigned int reg) -{ - volatile unsigned int *ptr; - - ptr = (volatile unsigned int *)(reg + uart_base); - return *ptr; -} - -/* we can deal with the case the UARTs are being run - * in FIFO mode, so that we don't hold up our execution - * waiting for tx to happen... -*/ - -static void putc(int ch) -{ - if (!config_enabled(CONFIG_DEBUG_LL)) - return; - - if (uart_rd(S3C2410_UFCON) & S3C2410_UFCON_FIFOMODE) { - int level; - - while (1) { - level = uart_rd(S3C2410_UFSTAT); - level &= fifo_mask; - - if (level < fifo_max) - break; - } - - } else { - /* not using fifos */ - - while ((uart_rd(S3C2410_UTRSTAT) & S3C2410_UTRSTAT_TXE) != S3C2410_UTRSTAT_TXE) - barrier(); - } - - /* write byte to transmission register */ - uart_wr(S3C2410_UTXH, ch); -} - -static inline void flush(void) -{ -} - -#define __raw_writel(d, ad) \ - do { \ - *((volatile unsigned int __force *)(ad)) = (d); \ - } while (0) - -#ifdef CONFIG_S3C_BOOT_ERROR_RESET - -static void arch_decomp_error(const char *x) -{ - putstr("\n\n"); - putstr(x); - putstr("\n\n -- System resetting\n"); - - __raw_writel(0x4000, S3C2410_WTDAT); - __raw_writel(0x4000, S3C2410_WTCNT); - __raw_writel(S3C2410_WTCON_ENABLE | S3C2410_WTCON_DIV128 | S3C2410_WTCON_RSTEN | S3C2410_WTCON_PRESCALE(0x40), S3C2410_WTCON); - - while(1); -} - -#define arch_error arch_decomp_error -#endif - -#ifdef CONFIG_S3C_BOOT_UART_FORCE_FIFO -static inline void arch_enable_uart_fifo(void) -{ - u32 fifocon; - - if (!config_enabled(CONFIG_DEBUG_LL)) - return; - - fifocon = uart_rd(S3C2410_UFCON); - - if (!(fifocon & S3C2410_UFCON_FIFOMODE)) { - fifocon |= S3C2410_UFCON_RESETBOTH; - uart_wr(S3C2410_UFCON, fifocon); - - /* wait for fifo reset to complete */ - while (1) { - fifocon = uart_rd(S3C2410_UFCON); - if (!(fifocon & S3C2410_UFCON_RESETBOTH)) - break; - } - - uart_wr(S3C2410_UFCON, S3C2410_UFCON_FIFOMODE); - } -} -#else -#define arch_enable_uart_fifo() do { } while(0) -#endif - - -static void -arch_decomp_setup(void) -{ - /* we may need to setup the uart(s) here if we are not running - * on an BAST... the BAST will have left the uarts configured - * after calling linux. - */ - - arch_detect_cpu(); - - /* Enable the UART FIFOs if they where not enabled and our - * configuration says we should turn them on. - */ - - arch_enable_uart_fifo(); -} - - -#endif /* __ASM_PLAT_UNCOMPRESS_H */ diff --git a/arch/arm/plat-samsung/init.c b/arch/arm/plat-samsung/init.c index aa9511b..8706c6c 100644 --- a/arch/arm/plat-samsung/init.c +++ b/arch/arm/plat-samsung/init.c @@ -21,11 +21,10 @@ #include <linux/interrupt.h> #include <linux/ioport.h> #include <linux/serial_core.h> +#include <linux/serial_s3c.h> #include <linux/platform_device.h> #include <linux/of.h> -#include <mach/hardware.h> - #include <asm/mach/arch.h> #include <asm/mach/map.h> @@ -33,8 +32,6 @@ #include <plat/devs.h> #include <plat/clock.h> -#include <plat/regs-serial.h> - static struct cpu_table *cpu; static struct cpu_table * __init s3c_lookup_cpu(unsigned long idcode, diff --git a/arch/arm/plat-samsung/pm-check.c b/arch/arm/plat-samsung/pm-check.c index 3cbd626..04aff2c 100644 --- a/arch/arm/plat-samsung/pm-check.c +++ b/arch/arm/plat-samsung/pm-check.c @@ -19,7 +19,7 @@ #include <linux/ioport.h> #include <linux/slab.h> -#include <plat/pm.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 diff --git a/arch/arm/plat-samsung/pm-common.c b/arch/arm/plat-samsung/pm-common.c new file mode 100644 index 0000000..515cd53 --- /dev/null +++ b/arch/arm/plat-samsung/pm-common.c @@ -0,0 +1,75 @@ +/* + * 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 helper functions. + * + * 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/io.h> +#include <linux/kernel.h> + +#include <plat/pm-common.h> + +/* 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(const struct sleep_save *ptr, int count) +{ + for (; count > 0; count--, ptr++) { + pr_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 similar 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(const struct sleep_save *ptr, int count) +{ + for (; count > 0; count--, ptr++) + __raw_writel(ptr->val, ptr->reg); +} diff --git a/arch/arm/plat-samsung/pm-debug.c b/arch/arm/plat-samsung/pm-debug.c new file mode 100644 index 0000000..8f19f66 --- /dev/null +++ b/arch/arm/plat-samsung/pm-debug.c @@ -0,0 +1,97 @@ +/* + * 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 + * + * 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/serial_core.h> +#include <linux/io.h> + +#include <asm/mach/map.h> + +#include <plat/cpu.h> +#include <plat/pm-common.h> + +#ifdef CONFIG_SAMSUNG_ATAGS +#include <mach/pm-core.h> +#else +static inline void s3c_pm_debug_init_uart(void) {} +static inline void s3c_pm_arch_update_uart(void __iomem *regs, + struct pm_uart_save *save) {} +#endif + +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); +} + +void s3c_pm_debug_init(void) +{ + /* restart uart clocks so we can use them to output */ + s3c_pm_debug_init_uart(); +} + +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(void) +{ + 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 (!soc_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(void) +{ + 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 (!soc_is_s3c2410()) + __raw_writel(save->udivslot, regs + S3C2443_DIVSLOT); +} diff --git a/arch/arm/plat-samsung/pm-gpio.c b/arch/arm/plat-samsung/pm-gpio.c index dd4c15d0..da26881 100644 --- a/arch/arm/plat-samsung/pm-gpio.c +++ b/arch/arm/plat-samsung/pm-gpio.c @@ -196,8 +196,7 @@ struct samsung_gpio_pm samsung_gpio_pm_2bit = { .resume = samsung_gpio_pm_2bit_resume, }; -#if defined(CONFIG_ARCH_S3C64XX) || defined(CONFIG_PLAT_S5P) \ - || defined(CONFIG_ARCH_EXYNOS) +#if defined(CONFIG_ARCH_S3C64XX) || defined(CONFIG_PLAT_S5P) static void samsung_gpio_pm_4bit_save(struct samsung_gpio_chip *chip) { chip->pm_save[1] = __raw_readl(chip->base + OFFS_CON); @@ -307,7 +306,7 @@ struct samsung_gpio_pm samsung_gpio_pm_4bit = { .save = samsung_gpio_pm_4bit_save, .resume = samsung_gpio_pm_4bit_resume, }; -#endif /* CONFIG_ARCH_S3C64XX || CONFIG_PLAT_S5P || CONFIG_ARCH_EXYNOS */ +#endif /* CONFIG_ARCH_S3C64XX || CONFIG_PLAT_S5P */ /** * samsung_pm_save_gpio() - save gpio chip data for suspend diff --git a/arch/arm/plat-samsung/pm.c b/arch/arm/plat-samsung/pm.c index e5b0f2c..f8c0f97 100644 --- a/arch/arm/plat-samsung/pm.c +++ b/arch/arm/plat-samsung/pm.c @@ -17,16 +17,13 @@ #include <linux/errno.h> #include <linux/delay.h> #include <linux/of.h> -#include <linux/serial_core.h> +#include <linux/serial_s3c.h> #include <linux/io.h> #include <asm/cacheflush.h> #include <asm/suspend.h> -#include <plat/regs-serial.h> - #ifdef CONFIG_SAMSUNG_ATAGS -#include <mach/hardware.h> #include <mach/map.h> #ifndef CONFIG_ARCH_EXYNOS #include <mach/regs-clock.h> @@ -44,93 +41,6 @@ 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_SAMSUNG_PM_DEBUG -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 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_SAMSUNG_PM_DEBUG */ - -/* Save the UART configurations if we are configured for debug. */ - -unsigned char pm_uart_udivslot; - -#ifdef CONFIG_SAMSUNG_PM_DEBUG - -static struct pm_uart_save uart_save; - -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) -{ - s3c_pm_save_uart(CONFIG_DEBUG_S3C_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) -{ - s3c_pm_restore_uart(CONFIG_DEBUG_S3C_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. */ @@ -155,62 +65,6 @@ int s3c_irqext_wake(struct irq_data *data, unsigned int state) 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(const 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 similar 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(const 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) diff --git a/arch/arm/plat-samsung/s5p-dev-uart.c b/arch/arm/plat-samsung/s5p-dev-uart.c index cafa3de..8c4487a 100644 --- a/arch/arm/plat-samsung/s5p-dev-uart.c +++ b/arch/arm/plat-samsung/s5p-dev-uart.c @@ -18,7 +18,6 @@ #include <asm/mach/arch.h> #include <asm/mach/irq.h> -#include <mach/hardware.h> #include <mach/map.h> #include <plat/devs.h> diff --git a/arch/arm/plat-samsung/s5p-irq-pm.c b/arch/arm/plat-samsung/s5p-irq-pm.c index 5914980..52b1694 100644 --- a/arch/arm/plat-samsung/s5p-irq-pm.c +++ b/arch/arm/plat-samsung/s5p-irq-pm.c @@ -22,10 +22,7 @@ #include <mach/map.h> #include <mach/regs-gpio.h> - -#ifndef CONFIG_ARCH_EXYNOS #include <mach/regs-irq.h> -#endif /* state for IRQs over sleep */ @@ -43,18 +40,8 @@ int s3c_irq_wake(struct irq_data *data, unsigned int state) unsigned long irqbit; unsigned int irq_rtc_tic, irq_rtc_alarm; -#ifdef CONFIG_ARCH_EXYNOS - if (soc_is_exynos5250()) { - irq_rtc_tic = EXYNOS5_IRQ_RTC_TIC; - irq_rtc_alarm = EXYNOS5_IRQ_RTC_ALARM; - } else { - irq_rtc_tic = EXYNOS4_IRQ_RTC_TIC; - irq_rtc_alarm = EXYNOS4_IRQ_RTC_ALARM; - } -#else irq_rtc_tic = IRQ_RTC_TIC; irq_rtc_alarm = IRQ_RTC_ALARM; -#endif if (data->irq == irq_rtc_tic || data->irq == irq_rtc_alarm) { irqbit = 1 << (data->irq + 1 - irq_rtc_alarm); diff --git a/arch/arm/plat-samsung/s5p-sleep.S b/arch/arm/plat-samsung/s5p-sleep.S index a030e73..c500165 100644 --- a/arch/arm/plat-samsung/s5p-sleep.S +++ b/arch/arm/plat-samsung/s5p-sleep.S @@ -23,18 +23,7 @@ #include <linux/linkage.h> #include <asm/asm-offsets.h> -#include <asm/hardware/cache-l2x0.h> -#define CPU_MASK 0xff0ffff0 -#define CPU_CORTEX_A9 0x410fc090 - -/* - * The following code is located into the .data section. This is to - * allow l2x0_regs_phys to be accessed with a relative load while we - * can't rely on any MMU translation. We could have put l2x0_regs_phys - * in the .text section as well, but some setups might insist on it to - * be truly read-only. (Reference from: arch/arm/kernel/sleep.S) - */ .data .align @@ -53,37 +42,5 @@ */ ENTRY(s3c_cpu_resume) -#ifdef CONFIG_CACHE_L2X0 - mrc p15, 0, r0, c0, c0, 0 - ldr r1, =CPU_MASK - and r0, r0, r1 - ldr r1, =CPU_CORTEX_A9 - cmp r0, r1 - bne resume_l2on - adr r0, l2x0_regs_phys - ldr r0, [r0] - ldr r1, [r0, #L2X0_R_PHY_BASE] - ldr r2, [r1, #L2X0_CTRL] - tst r2, #0x1 - bne resume_l2on - ldr r2, [r0, #L2X0_R_AUX_CTRL] - str r2, [r1, #L2X0_AUX_CTRL] - ldr r2, [r0, #L2X0_R_TAG_LATENCY] - str r2, [r1, #L2X0_TAG_LATENCY_CTRL] - ldr r2, [r0, #L2X0_R_DATA_LATENCY] - str r2, [r1, #L2X0_DATA_LATENCY_CTRL] - ldr r2, [r0, #L2X0_R_PREFETCH_CTRL] - str r2, [r1, #L2X0_PREFETCH_CTRL] - ldr r2, [r0, #L2X0_R_PWR_CTRL] - str r2, [r1, #L2X0_POWER_CTRL] - mov r2, #1 - str r2, [r1, #L2X0_CTRL] -resume_l2on: -#endif b cpu_resume ENDPROC(s3c_cpu_resume) -#ifdef CONFIG_CACHE_L2X0 - .globl l2x0_regs_phys -l2x0_regs_phys: - .long 0 -#endif |