diff options
author | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2010-11-16 11:06:22 -0800 |
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committer | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2010-11-16 11:06:22 -0800 |
commit | 20b4755e4fbb226eb42951bd40b53fcbce9ef944 (patch) | |
tree | 43da70e0b32ee423d3643ecd422821383411ab72 /arch/arm/mach-s5p64x0/cpu.c | |
parent | 744f9f104ea262de1dc3e29265870c649f0d9473 (diff) | |
parent | e53beacd23d9cb47590da6a7a7f6d417b941a994 (diff) |
Merge commit 'v2.6.37-rc2' into upstream/xenfs
* commit 'v2.6.37-rc2': (10093 commits)
Linux 2.6.37-rc2
capabilities/syslog: open code cap_syslog logic to fix build failure
i2c: Sanity checks on adapter registration
i2c: Mark i2c_adapter.id as deprecated
i2c: Drivers shouldn't include <linux/i2c-id.h>
i2c: Delete unused adapter IDs
i2c: Remove obsolete cleanup for clientdata
include/linux/kernel.h: Move logging bits to include/linux/printk.h
Fix gcc 4.5.1 miscompiling drivers/char/i8k.c (again)
hwmon: (w83795) Check for BEEP pin availability
hwmon: (w83795) Clear intrusion alarm immediately
hwmon: (w83795) Read the intrusion state properly
hwmon: (w83795) Print the actual temperature channels as sources
hwmon: (w83795) List all usable temperature sources
hwmon: (w83795) Expose fan control method
hwmon: (w83795) Fix fan control mode attributes
hwmon: (lm95241) Check validity of input values
hwmon: Change mail address of Hans J. Koch
PCI: sysfs: fix printk warnings
GFS2: Fix inode deallocation race
...
Diffstat (limited to 'arch/arm/mach-s5p64x0/cpu.c')
-rw-r--r-- | arch/arm/mach-s5p64x0/cpu.c | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/arch/arm/mach-s5p64x0/cpu.c b/arch/arm/mach-s5p64x0/cpu.c new file mode 100644 index 00000000000..b8d02eb4cf3 --- /dev/null +++ b/arch/arm/mach-s5p64x0/cpu.c @@ -0,0 +1,209 @@ +/* linux/arch/arm/mach-s5p64x0/cpu.c + * + * Copyright (c) 2009-2010 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 <linux/sched.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 <mach/hardware.h> +#include <mach/map.h> +#include <mach/regs-clock.h> + +#include <plat/regs-serial.h> +#include <plat/cpu.h> +#include <plat/devs.h> +#include <plat/clock.h> +#include <plat/s5p6440.h> +#include <plat/s5p6450.h> +#include <plat/adc-core.h> + +/* Initial IO mappings */ + +static struct map_desc s5p64x0_iodesc[] __initdata = { + { + .virtual = (unsigned long)S5P_VA_GPIO, + .pfn = __phys_to_pfn(S5P64X0_PA_GPIO), + .length = SZ_4K, + .type = MT_DEVICE, + }, { + .virtual = (unsigned long)VA_VIC0, + .pfn = __phys_to_pfn(S5P64X0_PA_VIC0), + .length = SZ_16K, + .type = MT_DEVICE, + }, { + .virtual = (unsigned long)VA_VIC1, + .pfn = __phys_to_pfn(S5P64X0_PA_VIC1), + .length = SZ_16K, + .type = MT_DEVICE, + }, +}; + +static struct map_desc s5p6440_iodesc[] __initdata = { + { + .virtual = (unsigned long)S3C_VA_UART, + .pfn = __phys_to_pfn(S5P6440_PA_UART(0)), + .length = SZ_4K, + .type = MT_DEVICE, + }, +}; + +static struct map_desc s5p6450_iodesc[] __initdata = { + { + .virtual = (unsigned long)S3C_VA_UART, + .pfn = __phys_to_pfn(S5P6450_PA_UART(0)), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = (unsigned long)S3C_VA_UART + SZ_512K, + .pfn = __phys_to_pfn(S5P6450_PA_UART(5)), + .length = SZ_4K, + .type = MT_DEVICE, + }, +}; + +static void s5p64x0_idle(void) +{ + unsigned long val; + + if (!need_resched()) { + val = __raw_readl(S5P64X0_PWR_CFG); + val &= ~(0x3 << 5); + val |= (0x1 << 5); + __raw_writel(val, S5P64X0_PWR_CFG); + + cpu_do_idle(); + } + local_irq_enable(); +} + +/* + * s5p64x0_map_io + * + * register the standard CPU IO areas + */ + +void __init s5p6440_map_io(void) +{ + /* initialize any device information early */ + s3c_adc_setname("s3c64xx-adc"); + + iotable_init(s5p64x0_iodesc, ARRAY_SIZE(s5p64x0_iodesc)); + iotable_init(s5p6440_iodesc, ARRAY_SIZE(s5p6440_iodesc)); +} + +void __init s5p6450_map_io(void) +{ + /* initialize any device information early */ + s3c_adc_setname("s3c64xx-adc"); + + iotable_init(s5p64x0_iodesc, ARRAY_SIZE(s5p64x0_iodesc)); + iotable_init(s5p6450_iodesc, ARRAY_SIZE(s5p6440_iodesc)); +} + +/* + * s5p64x0_init_clocks + * + * register and setup the CPU clocks + */ + +void __init s5p6440_init_clocks(int xtal) +{ + printk(KERN_DEBUG "%s: initializing clocks\n", __func__); + + s3c24xx_register_baseclocks(xtal); + s5p_register_clocks(xtal); + s5p6440_register_clocks(); + s5p6440_setup_clocks(); +} + +void __init s5p6450_init_clocks(int xtal) +{ + printk(KERN_DEBUG "%s: initializing clocks\n", __func__); + + s3c24xx_register_baseclocks(xtal); + s5p_register_clocks(xtal); + s5p6450_register_clocks(); + s5p6450_setup_clocks(); +} + +/* + * s5p64x0_init_irq + * + * register the CPU interrupts + */ + +void __init s5p6440_init_irq(void) +{ + /* S5P6440 supports 2 VIC */ + u32 vic[2]; + + /* + * VIC0 is missing IRQ_VIC0[3, 4, 8, 10, (12-22)] + * VIC1 is missing IRQ VIC1[1, 3, 4, 10, 11, 12, 14, 15, 22] + */ + vic[0] = 0xff800ae7; + vic[1] = 0xffbf23e5; + + s5p_init_irq(vic, ARRAY_SIZE(vic)); +} + +void __init s5p6450_init_irq(void) +{ + /* S5P6450 supports only 2 VIC */ + u32 vic[2]; + + /* + * VIC0 is missing IRQ_VIC0[(13-15), (21-22)] + * VIC1 is missing IRQ VIC1[12, 14, 23] + */ + vic[0] = 0xff9f1fff; + vic[1] = 0xff7fafff; + + s5p_init_irq(vic, ARRAY_SIZE(vic)); +} + +struct sysdev_class s5p64x0_sysclass = { + .name = "s5p64x0-core", +}; + +static struct sys_device s5p64x0_sysdev = { + .cls = &s5p64x0_sysclass, +}; + +static int __init s5p64x0_core_init(void) +{ + return sysdev_class_register(&s5p64x0_sysclass); +} +core_initcall(s5p64x0_core_init); + +int __init s5p64x0_init(void) +{ + printk(KERN_INFO "S5P64X0(S5P6440/S5P6450): Initializing architecture\n"); + + /* set idle function */ + pm_idle = s5p64x0_idle; + + return sysdev_register(&s5p64x0_sysdev); +} |