diff options
Diffstat (limited to 'arch/arm/plat-samsung')
| -rw-r--r-- | arch/arm/plat-samsung/Kconfig | 53 | ||||
| -rw-r--r-- | arch/arm/plat-samsung/Makefile | 12 | ||||
| -rw-r--r-- | arch/arm/plat-samsung/include/plat/dma-s3c24xx.h | 5 | ||||
| -rw-r--r-- | arch/arm/plat-samsung/include/plat/pm.h | 5 | ||||
| -rw-r--r-- | arch/arm/plat-samsung/include/plat/regs-watchdog.h | 41 | ||||
| -rw-r--r-- | arch/arm/plat-samsung/include/plat/uncompress.h | 21 | ||||
| -rw-r--r-- | arch/arm/plat-samsung/include/plat/watchdog-reset.h | 38 | ||||
| -rw-r--r-- | arch/arm/plat-samsung/init.c | 8 | ||||
| -rw-r--r-- | arch/arm/plat-samsung/pm-gpio.c | 5 | ||||
| -rw-r--r-- | arch/arm/plat-samsung/pm.c | 26 | ||||
| -rw-r--r-- | arch/arm/plat-samsung/s5p-dev-mfc.c | 11 | ||||
| -rw-r--r-- | arch/arm/plat-samsung/watchdog-reset.c | 97 |
12 files changed, 209 insertions, 113 deletions
diff --git a/arch/arm/plat-samsung/Kconfig b/arch/arm/plat-samsung/Kconfig index f8ed2de0a67..3dc5cbea86c 100644 --- a/arch/arm/plat-samsung/Kconfig +++ b/arch/arm/plat-samsung/Kconfig @@ -6,7 +6,7 @@ config PLAT_SAMSUNG bool - depends on PLAT_S3C24XX || ARCH_S3C64XX || PLAT_S5P + depends on PLAT_S3C24XX || ARCH_S3C64XX || PLAT_S5P || ARCH_EXYNOS default y select GENERIC_IRQ_CHIP select NO_IOPORT @@ -15,12 +15,10 @@ config PLAT_SAMSUNG config PLAT_S5P bool - depends on (ARCH_S5P64X0 || ARCH_S5PC100 || ARCH_S5PV210 || ARCH_EXYNOS) + depends on (ARCH_S5P64X0 || ARCH_S5PC100 || ARCH_S5PV210) default y select ARCH_REQUIRE_GPIOLIB - select ARM_GIC if ARCH_EXYNOS - select ARM_VIC if !ARCH_EXYNOS - select GIC_NON_BANKED if ARCH_EXYNOS4 + select ARM_VIC select NO_IOPORT select PLAT_SAMSUNG select S3C_GPIO_TRACK @@ -60,6 +58,20 @@ config S3C_LOWLEVEL_UART_PORT this configuration should be between zero and two. The port must have been initialised by the boot-loader before use. +config SAMSUNG_ATAGS + def_bool n + depends on !ARCH_MULTIPLATFORM + depends on ATAGS + help + This option enables ATAGS based boot support code for + Samsung platforms, including static platform devices, legacy + clock, timer and interrupt initialization, etc. + + Platforms that support only DT based boot need not to select + this option. + +if SAMSUNG_ATAGS + # timer options config SAMSUNG_HRT @@ -367,11 +379,6 @@ config S5P_DEV_JPEG help Compile in platform device definitions for JPEG codec -config S5P_DEV_MFC - bool - help - Compile in setup memory (init) code for MFC - config S5P_DEV_ONENAND bool help @@ -412,6 +419,21 @@ config S3C_DMA help Internal configuration for S3C DMA core +config S5P_IRQ_PM + bool + default y if S5P_PM + help + Legacy IRQ power management for S5P platforms + +config SAMSUNG_PM_GPIO + bool + default y if GPIO_SAMSUNG && PM + help + Include legacy GPIO power management code for platforms not using + pinctrl-samsung driver. + +endif + config SAMSUNG_DMADEV bool select ARM_AMBA @@ -421,6 +443,11 @@ config SAMSUNG_DMADEV help Use DMA device engine for PL330 DMAC. +config S5P_DEV_MFC + bool + help + Compile in setup memory (init) code for MFC + comment "Power management" config SAMSUNG_PM_DEBUG @@ -475,6 +502,12 @@ config SAMSUNG_WAKEMASK and above. This code allows a set of interrupt to wakeup-mask mappings. See <plat/wakeup-mask.h> +config SAMSUNG_WDT_RESET + bool + help + Compile support for system restart by triggering watchdog reset. + Used on SoCs that do not provide dedicated reset control. + config S5P_PM bool help diff --git a/arch/arm/plat-samsung/Makefile b/arch/arm/plat-samsung/Makefile index a23c460299a..98d07d8fc7a 100644 --- a/arch/arm/plat-samsung/Makefile +++ b/arch/arm/plat-samsung/Makefile @@ -31,10 +31,10 @@ obj-$(CONFIG_S3C_ADC) += adc.o # devices -obj-y += platformdata.o +obj-$(CONFIG_SAMSUNG_ATAGS) += platformdata.o -obj-y += devs.o -obj-y += dev-uart.o +obj-$(CONFIG_SAMSUNG_ATAGS) += devs.o +obj-$(CONFIG_SAMSUNG_ATAGS) += dev-uart.o obj-$(CONFIG_S5P_DEV_MFC) += s5p-dev-mfc.o obj-$(CONFIG_S5P_DEV_UART) += s5p-dev-uart.o @@ -52,10 +52,12 @@ obj-$(CONFIG_SAMSUNG_DMADEV) += dma-ops.o # PM support obj-$(CONFIG_PM) += pm.o -obj-$(CONFIG_PM) += pm-gpio.o +obj-$(CONFIG_SAMSUNG_PM_GPIO) += pm-gpio.o obj-$(CONFIG_SAMSUNG_PM_CHECK) += pm-check.o obj-$(CONFIG_SAMSUNG_WAKEMASK) += wakeup-mask.o +obj-$(CONFIG_SAMSUNG_WDT_RESET) += watchdog-reset.o -obj-$(CONFIG_S5P_PM) += s5p-pm.o s5p-irq-pm.o +obj-$(CONFIG_S5P_PM) += s5p-pm.o +obj-$(CONFIG_S5P_IRQ_PM) += s5p-irq-pm.o obj-$(CONFIG_S5P_SLEEP) += s5p-sleep.o diff --git a/arch/arm/plat-samsung/include/plat/dma-s3c24xx.h b/arch/arm/plat-samsung/include/plat/dma-s3c24xx.h index d01576318b2..bd3a6db14cb 100644 --- a/arch/arm/plat-samsung/include/plat/dma-s3c24xx.h +++ b/arch/arm/plat-samsung/include/plat/dma-s3c24xx.h @@ -28,7 +28,6 @@ struct s3c24xx_dma_map { const char *name; unsigned long channels[S3C_DMA_CHANNELS]; - unsigned long channels_rx[S3C_DMA_CHANNELS]; }; struct s3c24xx_dma_selection { @@ -38,10 +37,6 @@ struct s3c24xx_dma_selection { void (*select)(struct s3c2410_dma_chan *chan, struct s3c24xx_dma_map *map); - - void (*direction)(struct s3c2410_dma_chan *chan, - struct s3c24xx_dma_map *map, - enum dma_data_direction dir); }; extern int s3c24xx_dma_init_map(struct s3c24xx_dma_selection *sel); diff --git a/arch/arm/plat-samsung/include/plat/pm.h b/arch/arm/plat-samsung/include/plat/pm.h index f6fcadeee96..5d47ca35cab 100644 --- a/arch/arm/plat-samsung/include/plat/pm.h +++ b/arch/arm/plat-samsung/include/plat/pm.h @@ -166,6 +166,7 @@ extern void s3c_pm_check_store(void); */ extern void s3c_pm_configure_extint(void); +#ifdef CONFIG_GPIO_SAMSUNG /** * samsung_pm_restore_gpios() - restore the state of the gpios after sleep. * @@ -181,6 +182,10 @@ extern void samsung_pm_restore_gpios(void); * Save the GPIO states for resotration on resume. See samsung_pm_restore_gpios(). */ extern void samsung_pm_save_gpios(void); +#else +static inline void samsung_pm_restore_gpios(void) {} +static inline void samsung_pm_save_gpios(void) {} +#endif extern void s3c_pm_save_core(void); extern void s3c_pm_restore_core(void); diff --git a/arch/arm/plat-samsung/include/plat/regs-watchdog.h b/arch/arm/plat-samsung/include/plat/regs-watchdog.h deleted file mode 100644 index 4938492470f..00000000000 --- a/arch/arm/plat-samsung/include/plat/regs-watchdog.h +++ /dev/null @@ -1,41 +0,0 @@ -/* arch/arm/mach-s3c2410/include/mach/regs-watchdog.h - * - * Copyright (c) 2003 Simtec Electronics <linux@simtec.co.uk> - * http://www.simtec.co.uk/products/SWLINUX/ - * - * 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. - * - * S3C2410 Watchdog timer control -*/ - - -#ifndef __ASM_ARCH_REGS_WATCHDOG_H -#define __ASM_ARCH_REGS_WATCHDOG_H - -#define S3C_WDOGREG(x) ((x) + S3C_VA_WATCHDOG) - -#define S3C2410_WTCON S3C_WDOGREG(0x00) -#define S3C2410_WTDAT S3C_WDOGREG(0x04) -#define S3C2410_WTCNT S3C_WDOGREG(0x08) - -/* the watchdog can either generate a reset pulse, or an - * interrupt. - */ - -#define S3C2410_WTCON_RSTEN (0x01) -#define S3C2410_WTCON_INTEN (1<<2) -#define S3C2410_WTCON_ENABLE (1<<5) - -#define S3C2410_WTCON_DIV16 (0<<3) -#define S3C2410_WTCON_DIV32 (1<<3) -#define S3C2410_WTCON_DIV64 (2<<3) -#define S3C2410_WTCON_DIV128 (3<<3) - -#define S3C2410_WTCON_PRESCALE(x) ((x) << 8) -#define S3C2410_WTCON_PRESCALE_MASK (0xff00) - -#endif /* __ASM_ARCH_REGS_WATCHDOG_H */ - - diff --git a/arch/arm/plat-samsung/include/plat/uncompress.h b/arch/arm/plat-samsung/include/plat/uncompress.h index 02b66d723d1..4afc32f90b6 100644 --- a/arch/arm/plat-samsung/include/plat/uncompress.h +++ b/arch/arm/plat-samsung/include/plat/uncompress.h @@ -21,6 +21,8 @@ typedef unsigned int upf_t; /* cannot include linux/serial_core.h */ unsigned int fifo_mask; unsigned int fifo_max; +volatile u8 *uart_base; + /* forward declerations */ static void arch_detect_cpu(void); @@ -28,19 +30,24 @@ static void arch_detect_cpu(void); /* defines for UART registers */ #include <plat/regs-serial.h> -#include <plat/regs-watchdog.h> /* working in physical space... */ -#undef S3C2410_WDOGREG -#define S3C2410_WDOGREG(x) ((S3C24XX_PA_WATCHDOG + (x))) +#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) -#ifdef S3C_PA_UART -#define uart_base S3C_PA_UART + (S3C_UART_OFFSET * CONFIG_S3C_LOWLEVEL_UART_PORT) -#endif - static __inline__ void uart_wr(unsigned int reg, unsigned int val) { diff --git a/arch/arm/plat-samsung/include/plat/watchdog-reset.h b/arch/arm/plat-samsung/include/plat/watchdog-reset.h index bc4db9b04e3..0386b8f7662 100644 --- a/arch/arm/plat-samsung/include/plat/watchdog-reset.h +++ b/arch/arm/plat-samsung/include/plat/watchdog-reset.h @@ -10,37 +10,11 @@ * published by the Free Software Foundation. */ -#include <plat/clock.h> -#include <plat/regs-watchdog.h> -#include <mach/map.h> +#ifndef __PLAT_SAMSUNG_WATCHDOG_RESET_H +#define __PLAT_SAMSUNG_WATCHDOG_RESET_H -#include <linux/clk.h> -#include <linux/err.h> -#include <linux/io.h> -#include <linux/delay.h> +extern void samsung_wdt_reset(void); +extern void samsung_wdt_reset_of_init(void); +extern void samsung_wdt_reset_init(void __iomem *base); -static inline void arch_wdt_reset(void) -{ - printk("arch_reset: attempting watchdog reset\n"); - - __raw_writel(0, S3C2410_WTCON); /* disable watchdog, to be safe */ - - if (!IS_ERR(s3c2410_wdtclk)) - clk_enable(s3c2410_wdtclk); - - /* put initial values into count and data */ - __raw_writel(0x80, S3C2410_WTCNT); - __raw_writel(0x80, S3C2410_WTDAT); - - /* set the watchdog to go and reset... */ - __raw_writel(S3C2410_WTCON_ENABLE|S3C2410_WTCON_DIV16|S3C2410_WTCON_RSTEN | - S3C2410_WTCON_PRESCALE(0x20), S3C2410_WTCON); - - /* wait for reset to assert... */ - mdelay(500); - - printk(KERN_ERR "Watchdog reset failed to assert reset\n"); - - /* delay to allow the serial port to show the message */ - mdelay(50); -} +#endif /* __PLAT_SAMSUNG_WATCHDOG_RESET_H */ diff --git a/arch/arm/plat-samsung/init.c b/arch/arm/plat-samsung/init.c index 79d10fca909..3e5c4619caa 100644 --- a/arch/arm/plat-samsung/init.c +++ b/arch/arm/plat-samsung/init.c @@ -87,7 +87,7 @@ void __init s3c24xx_init_clocks(int xtal) } /* uart management */ - +#if IS_ENABLED(CONFIG_SAMSUNG_ATAGS) static int nr_uarts __initdata = 0; static struct s3c2410_uartcfg uart_cfgs[CONFIG_SERIAL_SAMSUNG_UARTS]; @@ -134,11 +134,12 @@ void __init s3c24xx_init_uarts(struct s3c2410_uartcfg *cfg, int no) if (cpu == NULL) return; - if (cpu->init_uarts == NULL) { + if (cpu->init_uarts == NULL && IS_ENABLED(CONFIG_SAMSUNG_ATAGS)) { printk(KERN_ERR "s3c24xx_init_uarts: cpu has no uart init\n"); } else (cpu->init_uarts)(cfg, no); } +#endif static int __init s3c_arch_init(void) { @@ -152,8 +153,9 @@ static int __init s3c_arch_init(void) ret = (cpu->init)(); if (ret != 0) return ret; - +#if IS_ENABLED(CONFIG_SAMSUNG_ATAGS) ret = platform_add_devices(s3c24xx_uart_devs, nr_uarts); +#endif return ret; } diff --git a/arch/arm/plat-samsung/pm-gpio.c b/arch/arm/plat-samsung/pm-gpio.c index c2ff92c30bd..a8de3cfe2ee 100644 --- a/arch/arm/plat-samsung/pm-gpio.c +++ b/arch/arm/plat-samsung/pm-gpio.c @@ -192,7 +192,8 @@ struct samsung_gpio_pm samsung_gpio_pm_2bit = { .resume = samsung_gpio_pm_2bit_resume, }; -#if defined(CONFIG_ARCH_S3C64XX) || defined(CONFIG_PLAT_S5P) +#if defined(CONFIG_ARCH_S3C64XX) || defined(CONFIG_PLAT_S5P) \ + || defined(CONFIG_ARCH_EXYNOS) static void samsung_gpio_pm_4bit_save(struct samsung_gpio_chip *chip) { chip->pm_save[1] = __raw_readl(chip->base + OFFS_CON); @@ -302,7 +303,7 @@ 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 */ +#endif /* CONFIG_ARCH_S3C64XX || CONFIG_PLAT_S5P || CONFIG_ARCH_EXYNOS */ /** * 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 53210ec4e8e..ea361364245 100644 --- a/arch/arm/plat-samsung/pm.c +++ b/arch/arm/plat-samsung/pm.c @@ -16,18 +16,23 @@ #include <linux/suspend.h> #include <linux/errno.h> #include <linux/delay.h> +#include <linux/of.h> #include <linux/serial_core.h> #include <linux/io.h> #include <asm/cacheflush.h> #include <asm/suspend.h> -#include <mach/hardware.h> -#include <mach/map.h> #include <plat/regs-serial.h> + +#ifdef CONFIG_SAMSUNG_ATAGS +#include <mach/hardware.h> +#include <mach/map.h> #include <mach/regs-clock.h> #include <mach/regs-irq.h> #include <mach/irqs.h> +#endif + #include <asm/irq.h> #include <plat/pm.h> @@ -261,7 +266,8 @@ static int s3c_pm_enter(suspend_state_t state) * require a full power-cycle) */ - if (!any_allowed(s3c_irqwake_intmask, s3c_irqwake_intallow) && + if (!of_have_populated_dt() && + !any_allowed(s3c_irqwake_intmask, s3c_irqwake_intallow) && !any_allowed(s3c_irqwake_eintmask, s3c_irqwake_eintallow)) { printk(KERN_ERR "%s: No wake-up sources!\n", __func__); printk(KERN_ERR "%s: Aborting sleep\n", __func__); @@ -270,8 +276,11 @@ static int s3c_pm_enter(suspend_state_t state) /* save all necessary core registers not covered by the drivers */ - samsung_pm_save_gpios(); - samsung_pm_saved_gpios(); + if (!of_have_populated_dt()) { + samsung_pm_save_gpios(); + samsung_pm_saved_gpios(); + } + s3c_pm_save_uarts(); s3c_pm_save_core(); @@ -310,8 +319,11 @@ static int s3c_pm_enter(suspend_state_t state) s3c_pm_restore_core(); s3c_pm_restore_uarts(); - samsung_pm_restore_gpios(); - s3c_pm_restored_gpios(); + + if (!of_have_populated_dt()) { + samsung_pm_restore_gpios(); + s3c_pm_restored_gpios(); + } s3c_pm_debug_init(); diff --git a/arch/arm/plat-samsung/s5p-dev-mfc.c b/arch/arm/plat-samsung/s5p-dev-mfc.c index a93fb6fb660..ad51f85fbd0 100644 --- a/arch/arm/plat-samsung/s5p-dev-mfc.c +++ b/arch/arm/plat-samsung/s5p-dev-mfc.c @@ -17,10 +17,12 @@ #include <linux/of_fdt.h> #include <linux/of.h> +#include <plat/mfc.h> + +#ifdef CONFIG_SAMSUNG_ATAGS #include <mach/map.h> #include <mach/irqs.h> #include <plat/devs.h> -#include <plat/mfc.h> static struct resource s5p_mfc_resource[] = { [0] = DEFINE_RES_MEM(S5P_PA_MFC, SZ_64K), @@ -61,6 +63,10 @@ struct platform_device s5p_device_mfc_r = { .coherent_dma_mask = DMA_BIT_MASK(32), }, }; +#else +static struct platform_device s5p_device_mfc_l; +static struct platform_device s5p_device_mfc_r; +#endif struct s5p_mfc_reserved_mem { phys_addr_t base; @@ -70,6 +76,7 @@ struct s5p_mfc_reserved_mem { static struct s5p_mfc_reserved_mem s5p_mfc_mem[2] __initdata; + void __init s5p_mfc_reserve_mem(phys_addr_t rbase, unsigned int rsize, phys_addr_t lbase, unsigned int lsize) { @@ -93,6 +100,7 @@ void __init s5p_mfc_reserve_mem(phys_addr_t rbase, unsigned int rsize, } } +#ifdef CONFIG_SAMSUNG_ATAGS static int __init s5p_mfc_memory_init(void) { int i; @@ -111,6 +119,7 @@ static int __init s5p_mfc_memory_init(void) return 0; } device_initcall(s5p_mfc_memory_init); +#endif #ifdef CONFIG_OF int __init s5p_fdt_find_mfc_mem(unsigned long node, const char *uname, diff --git a/arch/arm/plat-samsung/watchdog-reset.c b/arch/arm/plat-samsung/watchdog-reset.c new file mode 100644 index 00000000000..2ecb50bea04 --- /dev/null +++ b/arch/arm/plat-samsung/watchdog-reset.c @@ -0,0 +1,97 @@ +/* arch/arm/plat-samsung/watchdog-reset.c + * + * Copyright (c) 2008 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * Coyright (c) 2013 Tomasz Figa <tomasz.figa@gmail.com> + * + * Watchdog reset support for Samsung SoCs. + * + * 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/clk.h> +#include <linux/err.h> +#include <linux/io.h> +#include <linux/delay.h> +#include <linux/of.h> +#include <linux/of_address.h> + +#define S3C2410_WTCON 0x00 +#define S3C2410_WTDAT 0x04 +#define S3C2410_WTCNT 0x08 + +#define S3C2410_WTCON_ENABLE (1 << 5) +#define S3C2410_WTCON_DIV16 (0 << 3) +#define S3C2410_WTCON_RSTEN (1 << 0) +#define S3C2410_WTCON_PRESCALE(x) ((x) << 8) + +static void __iomem *wdt_base; +static struct clk *wdt_clock; + +void samsung_wdt_reset(void) +{ + if (!wdt_base) { + pr_err("%s: wdt reset not initialized\n", __func__); + /* delay to allow the serial port to show the message */ + mdelay(50); + return; + } + + if (!IS_ERR(wdt_clock)) + clk_prepare_enable(wdt_clock); + + /* disable watchdog, to be safe */ + __raw_writel(0, wdt_base + S3C2410_WTCON); + + /* put initial values into count and data */ + __raw_writel(0x80, wdt_base + S3C2410_WTCNT); + __raw_writel(0x80, wdt_base + S3C2410_WTDAT); + + /* set the watchdog to go and reset... */ + __raw_writel(S3C2410_WTCON_ENABLE | S3C2410_WTCON_DIV16 | + S3C2410_WTCON_RSTEN | S3C2410_WTCON_PRESCALE(0x20), + wdt_base + S3C2410_WTCON); + + /* wait for reset to assert... */ + mdelay(500); + + pr_err("Watchdog reset failed to assert reset\n"); + + /* delay to allow the serial port to show the message */ + mdelay(50); +} + +#ifdef CONFIG_OF +static const struct of_device_id s3c2410_wdt_match[] = { + { .compatible = "samsung,s3c2410-wdt" }, + {}, +}; + +void __init samsung_wdt_reset_of_init(void) +{ + struct device_node *np; + + np = of_find_matching_node(NULL, s3c2410_wdt_match); + if (!np) { + pr_err("%s: failed to find watchdog node\n", __func__); + return; + } + + wdt_base = of_iomap(np, 0); + if (!wdt_base) { + pr_err("%s: failed to map watchdog registers\n", __func__); + return; + } + + wdt_clock = of_clk_get(np, 0); +} +#endif + +void __init samsung_wdt_reset_init(void __iomem *base) +{ + wdt_base = base; + wdt_clock = clk_get(NULL, "watchdog"); +} |