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author | Jens Axboe <jens.axboe@oracle.com> | 2010-03-19 10:05:10 +0300 |
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committer | Jens Axboe <jens.axboe@oracle.com> | 2010-03-19 10:05:10 +0300 |
commit | b4b7a4ef097f288f724420b473dbf92a89c0ab7e (patch) | |
tree | 23ad8101e3e77c32a8d1e1b95a9c1cd7f7a475b7 /arch/arm/mach-s5p6442/cpu.c | |
parent | e9ce335df51ff782035a15c261a3c0c9892a1767 (diff) | |
parent | a3d3203e4bb40f253b1541e310dc0f9305be7c84 (diff) | |
download | linux-b4b7a4ef097f288f724420b473dbf92a89c0ab7e.tar.xz |
Merge branch 'master' into for-linus
Conflicts:
block/Kconfig
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'arch/arm/mach-s5p6442/cpu.c')
-rw-r--r-- | arch/arm/mach-s5p6442/cpu.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/arch/arm/mach-s5p6442/cpu.c b/arch/arm/mach-s5p6442/cpu.c new file mode 100644 index 000000000000..bc2524df89b3 --- /dev/null +++ b/arch/arm/mach-s5p6442/cpu.c @@ -0,0 +1,121 @@ +/* linux/arch/arm/mach-s5p6442/cpu.c + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * 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/io.h> +#include <linux/sysdev.h> +#include <linux/serial_core.h> +#include <linux/platform_device.h> + +#include <asm/mach/arch.h> +#include <asm/mach/map.h> +#include <asm/mach/irq.h> + +#include <asm/proc-fns.h> + +#include <mach/hardware.h> +#include <mach/map.h> +#include <asm/irq.h> + +#include <plat/regs-serial.h> +#include <mach/regs-clock.h> + +#include <plat/cpu.h> +#include <plat/devs.h> +#include <plat/clock.h> +#include <plat/s5p6442.h> + +/* Initial IO mappings */ + +static struct map_desc s5p6442_iodesc[] __initdata = { + { + .virtual = (unsigned long)S5P_VA_SYSTIMER, + .pfn = __phys_to_pfn(S5P6442_PA_SYSTIMER), + .length = SZ_16K, + .type = MT_DEVICE, + }, { + .virtual = (unsigned long)VA_VIC2, + .pfn = __phys_to_pfn(S5P6442_PA_VIC2), + .length = SZ_16K, + .type = MT_DEVICE, + } +}; + +static void s5p6442_idle(void) +{ + if (!need_resched()) + cpu_do_idle(); + + local_irq_enable(); +} + +/* s5p6442_map_io + * + * register the standard cpu IO areas +*/ + +void __init s5p6442_map_io(void) +{ + iotable_init(s5p6442_iodesc, ARRAY_SIZE(s5p6442_iodesc)); +} + +void __init s5p6442_init_clocks(int xtal) +{ + printk(KERN_DEBUG "%s: initializing clocks\n", __func__); + + s3c24xx_register_baseclocks(xtal); + s5p_register_clocks(xtal); + s5p6442_register_clocks(); + s5p6442_setup_clocks(); +} + +void __init s5p6442_init_irq(void) +{ + /* S5P6442 supports 3 VIC */ + u32 vic[3]; + + /* VIC0, VIC1, and VIC2: some interrupt reserved */ + vic[0] = 0x7fefffff; + vic[1] = 0X7f389c81; + vic[2] = 0X1bbbcfff; + + s5p_init_irq(vic, ARRAY_SIZE(vic)); +} + +static struct sysdev_class s5p6442_sysclass = { + .name = "s5p6442-core", +}; + +static struct sys_device s5p6442_sysdev = { + .cls = &s5p6442_sysclass, +}; + +static int __init s5p6442_core_init(void) +{ + return sysdev_class_register(&s5p6442_sysclass); +} + +core_initcall(s5p6442_core_init); + +int __init s5p6442_init(void) +{ + printk(KERN_INFO "S5P6442: Initializing architecture\n"); + + /* set idle function */ + pm_idle = s5p6442_idle; + + return sysdev_register(&s5p6442_sysdev); +} |