diff options
Diffstat (limited to 'kernel/arch/arm/mach-s3c24xx/s3c244x.c')
-rw-r--r-- | kernel/arch/arm/mach-s3c24xx/s3c244x.c | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-s3c24xx/s3c244x.c b/kernel/arch/arm/mach-s3c24xx/s3c244x.c new file mode 100644 index 000000000..b14119585 --- /dev/null +++ b/kernel/arch/arm/mach-s3c24xx/s3c244x.c @@ -0,0 +1,135 @@ +/* linux/arch/arm/plat-s3c24xx/s3c244x.c + * + * Copyright (c) 2004-2006 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * Samsung S3C2440 and S3C2442 Mobile CPU support (not S3C2443) + * + * 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/serial_core.h> +#include <linux/serial_s3c.h> +#include <linux/platform_device.h> +#include <linux/reboot.h> +#include <linux/device.h> +#include <linux/syscore_ops.h> +#include <linux/clk.h> +#include <linux/io.h> + +#include <asm/system_misc.h> +#include <asm/mach/arch.h> +#include <asm/mach/map.h> +#include <asm/mach/irq.h> + +#include <mach/hardware.h> +#include <asm/irq.h> + +#include <plat/cpu-freq.h> + +#include <mach/regs-clock.h> +#include <mach/regs-gpio.h> + +#include <plat/devs.h> +#include <plat/cpu.h> +#include <plat/pm.h> +#include <plat/nand-core.h> + +#include "common.h" +#include "regs-dsc.h" + +static struct map_desc s3c244x_iodesc[] __initdata = { + IODESC_ENT(CLKPWR), + IODESC_ENT(TIMER), + IODESC_ENT(WATCHDOG), +}; + +/* uart initialisation */ + +void __init s3c244x_init_uarts(struct s3c2410_uartcfg *cfg, int no) +{ + s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no); +} + +void __init s3c244x_map_io(void) +{ + /* register our io-tables */ + + iotable_init(s3c244x_iodesc, ARRAY_SIZE(s3c244x_iodesc)); + + /* rename any peripherals used differing from the s3c2410 */ + + s3c_device_sdi.name = "s3c2440-sdi"; + s3c_device_i2c0.name = "s3c2440-i2c"; + s3c_nand_setname("s3c2440-nand"); + s3c_device_ts.name = "s3c2440-ts"; + s3c_device_usbgadget.name = "s3c2440-usbgadget"; + s3c2410_device_dclk.name = "s3c2440-dclk"; +} + +/* Since the S3C2442 and S3C2440 share items, put both subsystems here */ + +struct bus_type s3c2440_subsys = { + .name = "s3c2440-core", + .dev_name = "s3c2440-core", +}; + +struct bus_type s3c2442_subsys = { + .name = "s3c2442-core", + .dev_name = "s3c2442-core", +}; + +/* 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 s3c2440 based system) + * as a driver which may support both 2410 and 2440 may try and use it. +*/ + +static int __init s3c2440_core_init(void) +{ + return subsys_system_register(&s3c2440_subsys, NULL); +} + +core_initcall(s3c2440_core_init); + +static int __init s3c2442_core_init(void) +{ + return subsys_system_register(&s3c2442_subsys, NULL); +} + +core_initcall(s3c2442_core_init); + + +#ifdef CONFIG_PM_SLEEP +static struct sleep_save s3c244x_sleep[] = { + SAVE_ITEM(S3C2440_DSC0), + SAVE_ITEM(S3C2440_DSC1), + SAVE_ITEM(S3C2440_GPJDAT), + SAVE_ITEM(S3C2440_GPJCON), + SAVE_ITEM(S3C2440_GPJUP) +}; + +static int s3c244x_suspend(void) +{ + s3c_pm_do_save(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep)); + return 0; +} + +static void s3c244x_resume(void) +{ + s3c_pm_do_restore(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep)); +} + +struct syscore_ops s3c244x_pm_syscore_ops = { + .suspend = s3c244x_suspend, + .resume = s3c244x_resume, +}; +#endif |