linux_dsm_epyc7002/arch/arm/mach-s3c24xx/s3c2412.c
Heiko Stuebner f6361c6b38 ARM: S3C24XX: remove separate restart code
The restart-handler series from Guenter Roeck got accepted recently and
implements among other things also the restart handler in the samsung
watchdog driver and where applicable in the clock drivers. So there is
no need for having the restart callbacks in s3c24xx boards anymore.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-09-14 02:43:09 +09:00

182 lines
4.2 KiB
C

/*
* Copyright (c) 2006 Simtec Electronics
* Ben Dooks <ben@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/kernel.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/timer.h>
#include <linux/init.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/syscore_ops.h>
#include <linux/serial_core.h>
#include <linux/serial_s3c.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/reboot.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <asm/proc-fns.h>
#include <asm/irq.h>
#include <asm/system_misc.h>
#include <mach/hardware.h>
#include <mach/regs-clock.h>
#include <mach/regs-gpio.h>
#include <plat/cpu.h>
#include <plat/cpu-freq.h>
#include <plat/devs.h>
#include <plat/nand-core.h>
#include <plat/pm.h>
#include <plat/regs-spi.h>
#include "common.h"
#include "regs-dsc.h"
#include "s3c2412-power.h"
#ifndef CONFIG_CPU_S3C2412_ONLY
void __iomem *s3c24xx_va_gpio2 = S3C24XX_VA_GPIO;
static inline void s3c2412_init_gpio2(void)
{
s3c24xx_va_gpio2 = S3C24XX_VA_GPIO + 0x10;
}
#else
#define s3c2412_init_gpio2() do { } while(0)
#endif
/* Initial IO mappings */
static struct map_desc s3c2412_iodesc[] __initdata = {
IODESC_ENT(CLKPWR),
IODESC_ENT(TIMER),
IODESC_ENT(WATCHDOG),
{
.virtual = (unsigned long)S3C2412_VA_SSMC,
.pfn = __phys_to_pfn(S3C2412_PA_SSMC),
.length = SZ_1M,
.type = MT_DEVICE,
},
{
.virtual = (unsigned long)S3C2412_VA_EBI,
.pfn = __phys_to_pfn(S3C2412_PA_EBI),
.length = SZ_1M,
.type = MT_DEVICE,
},
};
/* uart registration process */
void __init s3c2412_init_uarts(struct s3c2410_uartcfg *cfg, int no)
{
s3c24xx_init_uartdevs("s3c2412-uart", s3c2410_uart_resources, cfg, no);
/* rename devices that are s3c2412/s3c2413 specific */
s3c_device_sdi.name = "s3c2412-sdi";
s3c_device_lcd.name = "s3c2412-lcd";
s3c_nand_setname("s3c2412-nand");
/* alter IRQ of SDI controller */
s3c_device_sdi.resource[1].start = IRQ_S3C2412_SDI;
s3c_device_sdi.resource[1].end = IRQ_S3C2412_SDI;
/* spi channel related changes, s3c2412/13 specific */
s3c_device_spi0.name = "s3c2412-spi";
s3c_device_spi0.resource[0].end = S3C24XX_PA_SPI + 0x24;
s3c_device_spi1.name = "s3c2412-spi";
s3c_device_spi1.resource[0].start = S3C24XX_PA_SPI + S3C2412_SPI1;
s3c_device_spi1.resource[0].end = S3C24XX_PA_SPI + S3C2412_SPI1 + 0x24;
}
/* s3c2412_idle
*
* use the standard idle call by ensuring the idle mode
* in power config, then issuing the idle co-processor
* instruction
*/
static void s3c2412_idle(void)
{
unsigned long tmp;
/* ensure our idle mode is to go to idle */
tmp = __raw_readl(S3C2412_PWRCFG);
tmp &= ~S3C2412_PWRCFG_STANDBYWFI_MASK;
tmp |= S3C2412_PWRCFG_STANDBYWFI_IDLE;
__raw_writel(tmp, S3C2412_PWRCFG);
cpu_do_idle();
}
/* s3c2412_map_io
*
* register the standard cpu IO areas, and any passed in from the
* machine specific initialisation.
*/
void __init s3c2412_map_io(void)
{
/* move base of IO */
s3c2412_init_gpio2();
/* set our idle function */
arm_pm_idle = s3c2412_idle;
/* register our io-tables */
iotable_init(s3c2412_iodesc, ARRAY_SIZE(s3c2412_iodesc));
}
/* need to register the subsystem before we actually register the device, and
* we also need to ensure that it has been initialised before any of the
* drivers even try to use it (even if not on an s3c2412 based system)
* as a driver which may support both 2410 and 2440 may try and use it.
*/
struct bus_type s3c2412_subsys = {
.name = "s3c2412-core",
.dev_name = "s3c2412-core",
};
static int __init s3c2412_core_init(void)
{
return subsys_system_register(&s3c2412_subsys, NULL);
}
core_initcall(s3c2412_core_init);
static struct device s3c2412_dev = {
.bus = &s3c2412_subsys,
};
int __init s3c2412_init(void)
{
printk("S3C2412: Initialising architecture\n");
#ifdef CONFIG_PM
register_syscore_ops(&s3c2412_pm_syscore_ops);
register_syscore_ops(&s3c24xx_irq_syscore_ops);
#endif
return device_register(&s3c2412_dev);
}