Merge branch 'next/mct-exynos' into next/clk-exynos
Conflicts: arch/arm/mach-exynos/mach-exynos4-dt.c
This commit is contained in:
Kukjin Kim
Коммит
8ec46b97f2
|
|
@ -0,0 +1,68 @@
|
|||
Samsung's Multi Core Timer (MCT)
|
||||
|
||||
The Samsung's Multi Core Timer (MCT) module includes two main blocks, the
|
||||
global timer and CPU local timers. The global timer is a 64-bit free running
|
||||
up-counter and can generate 4 interrupts when the counter reaches one of the
|
||||
four preset counter values. The CPU local timers are 32-bit free running
|
||||
down-counters and generate an interrupt when the counter expires. There is
|
||||
one CPU local timer instantiated in MCT for every CPU in the system.
|
||||
|
||||
Required properties:
|
||||
|
||||
- compatible: should be "samsung,exynos4210-mct".
|
||||
(a) "samsung,exynos4210-mct", for mct compatible with Exynos4210 mct.
|
||||
(b) "samsung,exynos4412-mct", for mct compatible with Exynos4412 mct.
|
||||
|
||||
- reg: base address of the mct controller and length of the address space
|
||||
it occupies.
|
||||
|
||||
- interrupts: the list of interrupts generated by the controller. The following
|
||||
should be the order of the interrupts specified. The local timer interrupts
|
||||
should be specified after the four global timer interrupts have been
|
||||
specified.
|
||||
|
||||
0: Global Timer Interrupt 0
|
||||
1: Global Timer Interrupt 1
|
||||
2: Global Timer Interrupt 2
|
||||
3: Global Timer Interrupt 3
|
||||
4: Local Timer Interrupt 0
|
||||
5: Local Timer Interrupt 1
|
||||
6: ..
|
||||
7: ..
|
||||
i: Local Timer Interrupt n
|
||||
|
||||
Example 1: In this example, the system uses only the first global timer
|
||||
interrupt generated by MCT and the remaining three global timer
|
||||
interrupts are unused. Two local timer interrupts have been
|
||||
specified.
|
||||
|
||||
mct@10050000 {
|
||||
compatible = "samsung,exynos4210-mct";
|
||||
reg = <0x10050000 0x800>;
|
||||
interrupts = <0 57 0>, <0 0 0>, <0 0 0>, <0 0 0>,
|
||||
<0 42 0>, <0 48 0>;
|
||||
};
|
||||
|
||||
Example 2: In this example, the MCT global and local timer interrupts are
|
||||
connected to two seperate interrupt controllers. Hence, an
|
||||
interrupt-map is created to map the interrupts to the respective
|
||||
interrupt controllers.
|
||||
|
||||
mct@101C0000 {
|
||||
compatible = "samsung,exynos4210-mct";
|
||||
reg = <0x101C0000 0x800>;
|
||||
interrupt-controller;
|
||||
#interrups-cells = <2>;
|
||||
interrupt-parent = <&mct_map>;
|
||||
interrupts = <0 0>, <1 0>, <2 0>, <3 0>,
|
||||
<4 0>, <5 0>;
|
||||
|
||||
mct_map: mct-map {
|
||||
#interrupt-cells = <2>;
|
||||
#address-cells = <0>;
|
||||
#size-cells = <0>;
|
||||
interrupt-map = <0x0 0 &combiner 23 3>,
|
||||
<0x4 0 &gic 0 120 0>,
|
||||
<0x5 0 &gic 0 121 0>;
|
||||
};
|
||||
};
|
||||
|
|
@ -1655,7 +1655,7 @@ config LOCAL_TIMERS
|
|||
bool "Use local timer interrupts"
|
||||
depends on SMP
|
||||
default y
|
||||
select HAVE_ARM_TWD if (!ARCH_MSM_SCORPIONMP && !EXYNOS4_MCT)
|
||||
select HAVE_ARM_TWD if (!ARCH_MSM_SCORPIONMP && !CLKSRC_EXYNOS_MCT)
|
||||
help
|
||||
Enable support for local timers on SMP platforms, rather then the
|
||||
legacy IPI broadcast method. Local timers allows the system
|
||||
|
|
|
|||
|
|
@ -47,6 +47,28 @@
|
|||
<0 12 0>, <0 13 0>, <0 14 0>, <0 15 0>;
|
||||
};
|
||||
|
||||
mct@10050000 {
|
||||
compatible = "samsung,exynos4210-mct";
|
||||
reg = <0x10050000 0x800>;
|
||||
interrupt-controller;
|
||||
#interrups-cells = <2>;
|
||||
interrupt-parent = <&mct_map>;
|
||||
interrupts = <0 0>, <1 0>, <2 0>, <3 0>,
|
||||
<4 0>, <5 0>;
|
||||
|
||||
mct_map: mct-map {
|
||||
#interrupt-cells = <2>;
|
||||
#address-cells = <0>;
|
||||
#size-cells = <0>;
|
||||
interrupt-map = <0x0 0 &gic 0 57 0>,
|
||||
<0x1 0 &gic 0 69 0>,
|
||||
<0x2 0 &combiner 12 6>,
|
||||
<0x3 0 &combiner 12 7>,
|
||||
<0x4 0 &gic 0 42 0>,
|
||||
<0x5 0 &gic 0 48 0>;
|
||||
};
|
||||
};
|
||||
|
||||
pinctrl_0: pinctrl@11400000 {
|
||||
compatible = "samsung,exynos4210-pinctrl";
|
||||
reg = <0x11400000 0x1000>;
|
||||
|
|
|
|||
|
|
@ -25,4 +25,26 @@
|
|||
gic:interrupt-controller@10490000 {
|
||||
cpu-offset = <0x8000>;
|
||||
};
|
||||
|
||||
mct@10050000 {
|
||||
compatible = "samsung,exynos4412-mct";
|
||||
reg = <0x10050000 0x800>;
|
||||
interrupt-controller;
|
||||
#interrups-cells = <2>;
|
||||
interrupt-parent = <&mct_map>;
|
||||
interrupts = <0 0>, <1 0>, <2 0>, <3 0>,
|
||||
<4 0>, <5 0>;
|
||||
|
||||
mct_map: mct-map {
|
||||
#interrupt-cells = <2>;
|
||||
#address-cells = <0>;
|
||||
#size-cells = <0>;
|
||||
interrupt-map = <0x0 0 &gic 0 57 0>,
|
||||
<0x1 0 &combiner 12 5>,
|
||||
<0x2 0 &combiner 12 6>,
|
||||
<0x3 0 &combiner 12 7>,
|
||||
<0x4 0 &gic 1 12 0>,
|
||||
<0x5 0 &gic 1 12 0>;
|
||||
};
|
||||
};
|
||||
};
|
||||
|
|
|
|||
|
|
@ -25,4 +25,28 @@
|
|||
gic:interrupt-controller@10490000 {
|
||||
cpu-offset = <0x4000>;
|
||||
};
|
||||
|
||||
mct@10050000 {
|
||||
compatible = "samsung,exynos4412-mct";
|
||||
reg = <0x10050000 0x800>;
|
||||
interrupt-controller;
|
||||
#interrups-cells = <2>;
|
||||
interrupt-parent = <&mct_map>;
|
||||
interrupts = <0 0>, <1 0>, <2 0>, <3 0>,
|
||||
<4 0>, <5 0>, <6 0>, <7 0>;
|
||||
|
||||
mct_map: mct-map {
|
||||
#interrupt-cells = <2>;
|
||||
#address-cells = <0>;
|
||||
#size-cells = <0>;
|
||||
interrupt-map = <0x0 0 &gic 0 57 0>,
|
||||
<0x1 0 &combiner 12 5>,
|
||||
<0x2 0 &combiner 12 6>,
|
||||
<0x3 0 &combiner 12 7>,
|
||||
<0x4 0 &gic 1 12 0>,
|
||||
<0x5 0 &gic 1 12 0>,
|
||||
<0x6 0 &gic 1 12 0>,
|
||||
<0x7 0 &gic 1 12 0>;
|
||||
};
|
||||
};
|
||||
};
|
||||
|
|
|
|||
|
|
@ -79,6 +79,28 @@
|
|||
<0 28 0>, <0 29 0>, <0 30 0>, <0 31 0>;
|
||||
};
|
||||
|
||||
mct@101C0000 {
|
||||
compatible = "samsung,exynos4210-mct";
|
||||
reg = <0x101C0000 0x800>;
|
||||
interrupt-controller;
|
||||
#interrups-cells = <2>;
|
||||
interrupt-parent = <&mct_map>;
|
||||
interrupts = <0 0>, <1 0>, <2 0>, <3 0>,
|
||||
<4 0>, <5 0>;
|
||||
|
||||
mct_map: mct-map {
|
||||
#interrupt-cells = <2>;
|
||||
#address-cells = <0>;
|
||||
#size-cells = <0>;
|
||||
interrupt-map = <0x0 0 &combiner 23 3>,
|
||||
<0x1 0 &combiner 23 4>,
|
||||
<0x2 0 &combiner 25 2>,
|
||||
<0x3 0 &combiner 25 3>,
|
||||
<0x4 0 &gic 0 120 0>,
|
||||
<0x5 0 &gic 0 121 0>;
|
||||
};
|
||||
};
|
||||
|
||||
watchdog {
|
||||
compatible = "samsung,s3c2410-wdt";
|
||||
reg = <0x101D0000 0x100>;
|
||||
|
|
|
|||
|
|
@ -80,12 +80,6 @@ config SOC_EXYNOS5440
|
|||
help
|
||||
Enable EXYNOS5440 SoC support
|
||||
|
||||
config EXYNOS4_MCT
|
||||
bool
|
||||
default y
|
||||
help
|
||||
Use MCT (Multi Core Timer) as kernel timers
|
||||
|
||||
config EXYNOS_DEV_DMA
|
||||
bool
|
||||
help
|
||||
|
|
@ -407,6 +401,7 @@ config MACH_EXYNOS4_DT
|
|||
bool "Samsung Exynos4 Machine using device tree"
|
||||
depends on ARCH_EXYNOS4
|
||||
select ARM_AMBA
|
||||
select CLKSRC_OF
|
||||
select CPU_EXYNOS4210
|
||||
select HAVE_SAMSUNG_KEYPAD if INPUT_KEYBOARD
|
||||
select PINCTRL
|
||||
|
|
@ -424,6 +419,7 @@ config MACH_EXYNOS5_DT
|
|||
default y
|
||||
depends on ARCH_EXYNOS5
|
||||
select ARM_AMBA
|
||||
select CLKSRC_OF
|
||||
select USE_OF
|
||||
help
|
||||
Machine support for Samsung EXYNOS5 machine with device tree enabled.
|
||||
|
|
|
|||
|
|
@ -26,8 +26,6 @@ obj-$(CONFIG_ARCH_EXYNOS) += pmu.o
|
|||
|
||||
obj-$(CONFIG_SMP) += platsmp.o headsmp.o
|
||||
|
||||
obj-$(CONFIG_EXYNOS4_MCT) += mct.o
|
||||
|
||||
obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
|
||||
|
||||
# machine support
|
||||
|
|
|
|||
|
|
@ -256,11 +256,6 @@ static struct map_desc exynos5_iodesc[] __initdata = {
|
|||
.pfn = __phys_to_pfn(EXYNOS5_PA_SROMC),
|
||||
.length = SZ_4K,
|
||||
.type = MT_DEVICE,
|
||||
}, {
|
||||
.virtual = (unsigned long)S5P_VA_SYSTIMER,
|
||||
.pfn = __phys_to_pfn(EXYNOS5_PA_SYSTIMER),
|
||||
.length = SZ_4K,
|
||||
.type = MT_DEVICE,
|
||||
}, {
|
||||
.virtual = (unsigned long)S5P_VA_SYSRAM,
|
||||
.pfn = __phys_to_pfn(EXYNOS5_PA_SYSRAM),
|
||||
|
|
|
|||
|
|
@ -12,7 +12,7 @@
|
|||
#ifndef __ARCH_ARM_MACH_EXYNOS_COMMON_H
|
||||
#define __ARCH_ARM_MACH_EXYNOS_COMMON_H
|
||||
|
||||
extern void exynos4_timer_init(void);
|
||||
extern void mct_init(void);
|
||||
|
||||
struct map_desc;
|
||||
void exynos_init_io(struct map_desc *mach_desc, int size);
|
||||
|
|
|
|||
|
|
@ -30,8 +30,6 @@
|
|||
|
||||
/* For EXYNOS4 and EXYNOS5 */
|
||||
|
||||
#define EXYNOS_IRQ_MCT_LOCALTIMER IRQ_PPI(12)
|
||||
|
||||
#define EXYNOS_IRQ_EINT16_31 IRQ_SPI(32)
|
||||
|
||||
/* For EXYNOS4 SoCs */
|
||||
|
|
@ -323,8 +321,6 @@
|
|||
#define EXYNOS5_IRQ_CEC IRQ_SPI(114)
|
||||
#define EXYNOS5_IRQ_SATA IRQ_SPI(115)
|
||||
|
||||
#define EXYNOS5_IRQ_MCT_L0 IRQ_SPI(120)
|
||||
#define EXYNOS5_IRQ_MCT_L1 IRQ_SPI(121)
|
||||
#define EXYNOS5_IRQ_MMC44 IRQ_SPI(123)
|
||||
#define EXYNOS5_IRQ_MDMA1 IRQ_SPI(124)
|
||||
#define EXYNOS5_IRQ_FIMC_LITE0 IRQ_SPI(125)
|
||||
|
|
@ -419,8 +415,6 @@
|
|||
#define EXYNOS5_IRQ_PMU_CPU1 COMBINER_IRQ(22, 4)
|
||||
|
||||
#define EXYNOS5_IRQ_EINT0 COMBINER_IRQ(23, 0)
|
||||
#define EXYNOS5_IRQ_MCT_G0 COMBINER_IRQ(23, 3)
|
||||
#define EXYNOS5_IRQ_MCT_G1 COMBINER_IRQ(23, 4)
|
||||
|
||||
#define EXYNOS5_IRQ_EINT1 COMBINER_IRQ(24, 0)
|
||||
#define EXYNOS5_IRQ_SYSMMU_LITE1_0 COMBINER_IRQ(24, 1)
|
||||
|
|
|
|||
|
|
@ -65,7 +65,6 @@
|
|||
#define EXYNOS5_PA_CMU 0x10010000
|
||||
|
||||
#define EXYNOS4_PA_SYSTIMER 0x10050000
|
||||
#define EXYNOS5_PA_SYSTIMER 0x101C0000
|
||||
|
||||
#define EXYNOS4_PA_WATCHDOG 0x10060000
|
||||
#define EXYNOS5_PA_WATCHDOG 0x101D0000
|
||||
|
|
|
|||
|
|
@ -1,53 +0,0 @@
|
|||
/* arch/arm/mach-exynos4/include/mach/regs-mct.h
|
||||
*
|
||||
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
|
||||
* http://www.samsung.com
|
||||
*
|
||||
* EXYNOS4 MCT configutation
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#ifndef __ASM_ARCH_REGS_MCT_H
|
||||
#define __ASM_ARCH_REGS_MCT_H __FILE__
|
||||
|
||||
#include <mach/map.h>
|
||||
|
||||
#define EXYNOS4_MCTREG(x) (S5P_VA_SYSTIMER + (x))
|
||||
|
||||
#define EXYNOS4_MCT_G_CNT_L EXYNOS4_MCTREG(0x100)
|
||||
#define EXYNOS4_MCT_G_CNT_U EXYNOS4_MCTREG(0x104)
|
||||
#define EXYNOS4_MCT_G_CNT_WSTAT EXYNOS4_MCTREG(0x110)
|
||||
|
||||
#define EXYNOS4_MCT_G_COMP0_L EXYNOS4_MCTREG(0x200)
|
||||
#define EXYNOS4_MCT_G_COMP0_U EXYNOS4_MCTREG(0x204)
|
||||
#define EXYNOS4_MCT_G_COMP0_ADD_INCR EXYNOS4_MCTREG(0x208)
|
||||
|
||||
#define EXYNOS4_MCT_G_TCON EXYNOS4_MCTREG(0x240)
|
||||
|
||||
#define EXYNOS4_MCT_G_INT_CSTAT EXYNOS4_MCTREG(0x244)
|
||||
#define EXYNOS4_MCT_G_INT_ENB EXYNOS4_MCTREG(0x248)
|
||||
#define EXYNOS4_MCT_G_WSTAT EXYNOS4_MCTREG(0x24C)
|
||||
|
||||
#define _EXYNOS4_MCT_L_BASE EXYNOS4_MCTREG(0x300)
|
||||
#define EXYNOS4_MCT_L_BASE(x) (_EXYNOS4_MCT_L_BASE + (0x100 * x))
|
||||
#define EXYNOS4_MCT_L_MASK (0xffffff00)
|
||||
|
||||
#define MCT_L_TCNTB_OFFSET (0x00)
|
||||
#define MCT_L_ICNTB_OFFSET (0x08)
|
||||
#define MCT_L_TCON_OFFSET (0x20)
|
||||
#define MCT_L_INT_CSTAT_OFFSET (0x30)
|
||||
#define MCT_L_INT_ENB_OFFSET (0x34)
|
||||
#define MCT_L_WSTAT_OFFSET (0x40)
|
||||
|
||||
#define MCT_G_TCON_START (1 << 8)
|
||||
#define MCT_G_TCON_COMP0_AUTO_INC (1 << 1)
|
||||
#define MCT_G_TCON_COMP0_ENABLE (1 << 0)
|
||||
|
||||
#define MCT_L_TCON_INTERVAL_MODE (1 << 2)
|
||||
#define MCT_L_TCON_INT_START (1 << 1)
|
||||
#define MCT_L_TCON_TIMER_START (1 << 0)
|
||||
|
||||
#endif /* __ASM_ARCH_REGS_MCT_H */
|
||||
|
|
@ -202,6 +202,6 @@ MACHINE_START(ARMLEX4210, "ARMLEX4210")
|
|||
.map_io = armlex4210_map_io,
|
||||
.init_machine = armlex4210_machine_init,
|
||||
.init_late = exynos_init_late,
|
||||
.init_time = exynos4_timer_init,
|
||||
.init_time = mct_init,
|
||||
.restart = exynos4_restart,
|
||||
MACHINE_END
|
||||
|
|
|
|||
|
|
@ -15,6 +15,7 @@
|
|||
#include <linux/of_fdt.h>
|
||||
#include <linux/serial_core.h>
|
||||
#include <linux/memblock.h>
|
||||
#include <linux/clocksource.h>
|
||||
|
||||
#include <asm/mach/arch.h>
|
||||
#include <mach/map.h>
|
||||
|
|
@ -158,7 +159,7 @@ DT_MACHINE_START(EXYNOS4210_DT, "Samsung Exynos4 (Flattened Device Tree)")
|
|||
.map_io = exynos4_dt_map_io,
|
||||
.init_machine = exynos4_dt_machine_init,
|
||||
.init_late = exynos_init_late,
|
||||
.init_time = exynos4_timer_init,
|
||||
.init_time = clocksource_of_init,
|
||||
.dt_compat = exynos4_dt_compat,
|
||||
.restart = exynos4_restart,
|
||||
.reserve = exynos4_reserve,
|
||||
|
|
|
|||
|
|
@ -14,6 +14,7 @@
|
|||
#include <linux/serial_core.h>
|
||||
#include <linux/memblock.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/clocksource.h>
|
||||
|
||||
#include <asm/mach/arch.h>
|
||||
#include <mach/map.h>
|
||||
|
|
@ -217,7 +218,7 @@ DT_MACHINE_START(EXYNOS5_DT, "SAMSUNG EXYNOS5 (Flattened Device Tree)")
|
|||
.map_io = exynos5_dt_map_io,
|
||||
.init_machine = exynos5_dt_machine_init,
|
||||
.init_late = exynos_init_late,
|
||||
.init_time = exynos4_timer_init,
|
||||
.init_time = clocksource_of_init,
|
||||
.dt_compat = exynos5_dt_compat,
|
||||
.restart = exynos5_restart,
|
||||
.reserve = exynos5_reserve,
|
||||
|
|
|
|||
|
|
@ -1380,7 +1380,7 @@ MACHINE_START(NURI, "NURI")
|
|||
.map_io = nuri_map_io,
|
||||
.init_machine = nuri_machine_init,
|
||||
.init_late = exynos_init_late,
|
||||
.init_time = exynos4_timer_init,
|
||||
.init_time = mct_init,
|
||||
.reserve = &nuri_reserve,
|
||||
.restart = exynos4_restart,
|
||||
MACHINE_END
|
||||
|
|
|
|||
|
|
@ -815,7 +815,7 @@ MACHINE_START(ORIGEN, "ORIGEN")
|
|||
.map_io = origen_map_io,
|
||||
.init_machine = origen_machine_init,
|
||||
.init_late = exynos_init_late,
|
||||
.init_time = exynos4_timer_init,
|
||||
.init_time = mct_init,
|
||||
.reserve = &origen_reserve,
|
||||
.restart = exynos4_restart,
|
||||
MACHINE_END
|
||||
|
|
|
|||
|
|
@ -376,7 +376,7 @@ MACHINE_START(SMDK4212, "SMDK4212")
|
|||
.init_irq = exynos4_init_irq,
|
||||
.map_io = smdk4x12_map_io,
|
||||
.init_machine = smdk4x12_machine_init,
|
||||
.init_time = exynos4_timer_init,
|
||||
.init_time = mct_init,
|
||||
.restart = exynos4_restart,
|
||||
.reserve = &smdk4x12_reserve,
|
||||
MACHINE_END
|
||||
|
|
@ -390,7 +390,7 @@ MACHINE_START(SMDK4412, "SMDK4412")
|
|||
.map_io = smdk4x12_map_io,
|
||||
.init_machine = smdk4x12_machine_init,
|
||||
.init_late = exynos_init_late,
|
||||
.init_time = exynos4_timer_init,
|
||||
.init_time = mct_init,
|
||||
.restart = exynos4_restart,
|
||||
.reserve = &smdk4x12_reserve,
|
||||
MACHINE_END
|
||||
|
|
|
|||
|
|
@ -423,7 +423,7 @@ MACHINE_START(SMDKV310, "SMDKV310")
|
|||
.init_irq = exynos4_init_irq,
|
||||
.map_io = smdkv310_map_io,
|
||||
.init_machine = smdkv310_machine_init,
|
||||
.init_time = exynos4_timer_init,
|
||||
.init_time = mct_init,
|
||||
.reserve = &smdkv310_reserve,
|
||||
.restart = exynos4_restart,
|
||||
MACHINE_END
|
||||
|
|
@ -436,7 +436,7 @@ MACHINE_START(SMDKC210, "SMDKC210")
|
|||
.map_io = smdkv310_map_io,
|
||||
.init_machine = smdkv310_machine_init,
|
||||
.init_late = exynos_init_late,
|
||||
.init_time = exynos4_timer_init,
|
||||
.init_time = mct_init,
|
||||
.reserve = &smdkv310_reserve,
|
||||
.restart = exynos4_restart,
|
||||
MACHINE_END
|
||||
|
|
|
|||
|
|
@ -67,3 +67,8 @@ config CLKSRC_METAG_GENERIC
|
|||
def_bool y if METAG
|
||||
help
|
||||
This option enables support for the Meta per-thread timers.
|
||||
|
||||
config CLKSRC_EXYNOS_MCT
|
||||
def_bool y if ARCH_EXYNOS
|
||||
help
|
||||
Support for Multi Core Timer controller on Exynos SoCs.
|
||||
|
|
|
|||
|
|
@ -19,6 +19,7 @@ obj-$(CONFIG_ARCH_BCM2835) += bcm2835_timer.o
|
|||
obj-$(CONFIG_SUNXI_TIMER) += sunxi_timer.o
|
||||
obj-$(CONFIG_ARCH_TEGRA) += tegra20_timer.o
|
||||
obj-$(CONFIG_VT8500_TIMER) += vt8500_timer.o
|
||||
obj-$(CONFIG_CLKSRC_EXYNOS_MCT) += exynos_mct.o
|
||||
|
||||
obj-$(CONFIG_ARM_ARCH_TIMER) += arm_arch_timer.o
|
||||
obj-$(CONFIG_CLKSRC_METAG_GENERIC) += metag_generic.o
|
||||
|
|
|
|||
|
|
@ -20,6 +20,9 @@
|
|||
#include <linux/delay.h>
|
||||
#include <linux/percpu.h>
|
||||
#include <linux/of.h>
|
||||
#include <linux/of_irq.h>
|
||||
#include <linux/of_address.h>
|
||||
#include <linux/clocksource.h>
|
||||
|
||||
#include <asm/arch_timer.h>
|
||||
#include <asm/localtimer.h>
|
||||
|
|
@ -28,9 +31,36 @@
|
|||
|
||||
#include <mach/map.h>
|
||||
#include <mach/irqs.h>
|
||||
#include <mach/regs-mct.h>
|
||||
#include <asm/mach/time.h>
|
||||
|
||||
#define EXYNOS4_MCTREG(x) (x)
|
||||
#define EXYNOS4_MCT_G_CNT_L EXYNOS4_MCTREG(0x100)
|
||||
#define EXYNOS4_MCT_G_CNT_U EXYNOS4_MCTREG(0x104)
|
||||
#define EXYNOS4_MCT_G_CNT_WSTAT EXYNOS4_MCTREG(0x110)
|
||||
#define EXYNOS4_MCT_G_COMP0_L EXYNOS4_MCTREG(0x200)
|
||||
#define EXYNOS4_MCT_G_COMP0_U EXYNOS4_MCTREG(0x204)
|
||||
#define EXYNOS4_MCT_G_COMP0_ADD_INCR EXYNOS4_MCTREG(0x208)
|
||||
#define EXYNOS4_MCT_G_TCON EXYNOS4_MCTREG(0x240)
|
||||
#define EXYNOS4_MCT_G_INT_CSTAT EXYNOS4_MCTREG(0x244)
|
||||
#define EXYNOS4_MCT_G_INT_ENB EXYNOS4_MCTREG(0x248)
|
||||
#define EXYNOS4_MCT_G_WSTAT EXYNOS4_MCTREG(0x24C)
|
||||
#define _EXYNOS4_MCT_L_BASE EXYNOS4_MCTREG(0x300)
|
||||
#define EXYNOS4_MCT_L_BASE(x) (_EXYNOS4_MCT_L_BASE + (0x100 * x))
|
||||
#define EXYNOS4_MCT_L_MASK (0xffffff00)
|
||||
|
||||
#define MCT_L_TCNTB_OFFSET (0x00)
|
||||
#define MCT_L_ICNTB_OFFSET (0x08)
|
||||
#define MCT_L_TCON_OFFSET (0x20)
|
||||
#define MCT_L_INT_CSTAT_OFFSET (0x30)
|
||||
#define MCT_L_INT_ENB_OFFSET (0x34)
|
||||
#define MCT_L_WSTAT_OFFSET (0x40)
|
||||
#define MCT_G_TCON_START (1 << 8)
|
||||
#define MCT_G_TCON_COMP0_AUTO_INC (1 << 1)
|
||||
#define MCT_G_TCON_COMP0_ENABLE (1 << 0)
|
||||
#define MCT_L_TCON_INTERVAL_MODE (1 << 2)
|
||||
#define MCT_L_TCON_INT_START (1 << 1)
|
||||
#define MCT_L_TCON_TIMER_START (1 << 0)
|
||||
|
||||
#define TICK_BASE_CNT 1
|
||||
|
||||
enum {
|
||||
|
|
@ -38,64 +68,75 @@ enum {
|
|||
MCT_INT_PPI
|
||||
};
|
||||
|
||||
enum {
|
||||
MCT_G0_IRQ,
|
||||
MCT_G1_IRQ,
|
||||
MCT_G2_IRQ,
|
||||
MCT_G3_IRQ,
|
||||
MCT_L0_IRQ,
|
||||
MCT_L1_IRQ,
|
||||
MCT_L2_IRQ,
|
||||
MCT_L3_IRQ,
|
||||
MCT_NR_IRQS,
|
||||
};
|
||||
|
||||
static void __iomem *reg_base;
|
||||
static unsigned long clk_rate;
|
||||
static unsigned int mct_int_type;
|
||||
static int mct_irqs[MCT_NR_IRQS];
|
||||
|
||||
struct mct_clock_event_device {
|
||||
struct clock_event_device *evt;
|
||||
void __iomem *base;
|
||||
unsigned long base;
|
||||
char name[10];
|
||||
};
|
||||
|
||||
static void exynos4_mct_write(unsigned int value, void *addr)
|
||||
static void exynos4_mct_write(unsigned int value, unsigned long offset)
|
||||
{
|
||||
void __iomem *stat_addr;
|
||||
unsigned long stat_addr;
|
||||
u32 mask;
|
||||
u32 i;
|
||||
|
||||
__raw_writel(value, addr);
|
||||
__raw_writel(value, reg_base + offset);
|
||||
|
||||
if (likely(addr >= EXYNOS4_MCT_L_BASE(0))) {
|
||||
u32 base = (u32) addr & EXYNOS4_MCT_L_MASK;
|
||||
switch ((u32) addr & ~EXYNOS4_MCT_L_MASK) {
|
||||
case (u32) MCT_L_TCON_OFFSET:
|
||||
stat_addr = (void __iomem *) base + MCT_L_WSTAT_OFFSET;
|
||||
if (likely(offset >= EXYNOS4_MCT_L_BASE(0))) {
|
||||
stat_addr = (offset & ~EXYNOS4_MCT_L_MASK) + MCT_L_WSTAT_OFFSET;
|
||||
switch (offset & EXYNOS4_MCT_L_MASK) {
|
||||
case MCT_L_TCON_OFFSET:
|
||||
mask = 1 << 3; /* L_TCON write status */
|
||||
break;
|
||||
case (u32) MCT_L_ICNTB_OFFSET:
|
||||
stat_addr = (void __iomem *) base + MCT_L_WSTAT_OFFSET;
|
||||
case MCT_L_ICNTB_OFFSET:
|
||||
mask = 1 << 1; /* L_ICNTB write status */
|
||||
break;
|
||||
case (u32) MCT_L_TCNTB_OFFSET:
|
||||
stat_addr = (void __iomem *) base + MCT_L_WSTAT_OFFSET;
|
||||
case MCT_L_TCNTB_OFFSET:
|
||||
mask = 1 << 0; /* L_TCNTB write status */
|
||||
break;
|
||||
default:
|
||||
return;
|
||||
}
|
||||
} else {
|
||||
switch ((u32) addr) {
|
||||
case (u32) EXYNOS4_MCT_G_TCON:
|
||||
switch (offset) {
|
||||
case EXYNOS4_MCT_G_TCON:
|
||||
stat_addr = EXYNOS4_MCT_G_WSTAT;
|
||||
mask = 1 << 16; /* G_TCON write status */
|
||||
break;
|
||||
case (u32) EXYNOS4_MCT_G_COMP0_L:
|
||||
case EXYNOS4_MCT_G_COMP0_L:
|
||||
stat_addr = EXYNOS4_MCT_G_WSTAT;
|
||||
mask = 1 << 0; /* G_COMP0_L write status */
|
||||
break;
|
||||
case (u32) EXYNOS4_MCT_G_COMP0_U:
|
||||
case EXYNOS4_MCT_G_COMP0_U:
|
||||
stat_addr = EXYNOS4_MCT_G_WSTAT;
|
||||
mask = 1 << 1; /* G_COMP0_U write status */
|
||||
break;
|
||||
case (u32) EXYNOS4_MCT_G_COMP0_ADD_INCR:
|
||||
case EXYNOS4_MCT_G_COMP0_ADD_INCR:
|
||||
stat_addr = EXYNOS4_MCT_G_WSTAT;
|
||||
mask = 1 << 2; /* G_COMP0_ADD_INCR w status */
|
||||
break;
|
||||
case (u32) EXYNOS4_MCT_G_CNT_L:
|
||||
case EXYNOS4_MCT_G_CNT_L:
|
||||
stat_addr = EXYNOS4_MCT_G_CNT_WSTAT;
|
||||
mask = 1 << 0; /* G_CNT_L write status */
|
||||
break;
|
||||
case (u32) EXYNOS4_MCT_G_CNT_U:
|
||||
case EXYNOS4_MCT_G_CNT_U:
|
||||
stat_addr = EXYNOS4_MCT_G_CNT_WSTAT;
|
||||
mask = 1 << 1; /* G_CNT_U write status */
|
||||
break;
|
||||
|
|
@ -106,12 +147,12 @@ static void exynos4_mct_write(unsigned int value, void *addr)
|
|||
|
||||
/* Wait maximum 1 ms until written values are applied */
|
||||
for (i = 0; i < loops_per_jiffy / 1000 * HZ; i++)
|
||||
if (__raw_readl(stat_addr) & mask) {
|
||||
__raw_writel(mask, stat_addr);
|
||||
if (__raw_readl(reg_base + stat_addr) & mask) {
|
||||
__raw_writel(mask, reg_base + stat_addr);
|
||||
return;
|
||||
}
|
||||
|
||||
panic("MCT hangs after writing %d (addr:0x%08x)\n", value, (u32)addr);
|
||||
panic("MCT hangs after writing %d (offset:0x%lx)\n", value, offset);
|
||||
}
|
||||
|
||||
/* Clocksource handling */
|
||||
|
|
@ -122,7 +163,7 @@ static void exynos4_mct_frc_start(u32 hi, u32 lo)
|
|||
exynos4_mct_write(lo, EXYNOS4_MCT_G_CNT_L);
|
||||
exynos4_mct_write(hi, EXYNOS4_MCT_G_CNT_U);
|
||||
|
||||
reg = __raw_readl(EXYNOS4_MCT_G_TCON);
|
||||
reg = __raw_readl(reg_base + EXYNOS4_MCT_G_TCON);
|
||||
reg |= MCT_G_TCON_START;
|
||||
exynos4_mct_write(reg, EXYNOS4_MCT_G_TCON);
|
||||
}
|
||||
|
|
@ -130,12 +171,12 @@ static void exynos4_mct_frc_start(u32 hi, u32 lo)
|
|||
static cycle_t exynos4_frc_read(struct clocksource *cs)
|
||||
{
|
||||
unsigned int lo, hi;
|
||||
u32 hi2 = __raw_readl(EXYNOS4_MCT_G_CNT_U);
|
||||
u32 hi2 = __raw_readl(reg_base + EXYNOS4_MCT_G_CNT_U);
|
||||
|
||||
do {
|
||||
hi = hi2;
|
||||
lo = __raw_readl(EXYNOS4_MCT_G_CNT_L);
|
||||
hi2 = __raw_readl(EXYNOS4_MCT_G_CNT_U);
|
||||
lo = __raw_readl(reg_base + EXYNOS4_MCT_G_CNT_L);
|
||||
hi2 = __raw_readl(reg_base + EXYNOS4_MCT_G_CNT_U);
|
||||
} while (hi != hi2);
|
||||
|
||||
return ((cycle_t)hi << 32) | lo;
|
||||
|
|
@ -167,7 +208,7 @@ static void exynos4_mct_comp0_stop(void)
|
|||
{
|
||||
unsigned int tcon;
|
||||
|
||||
tcon = __raw_readl(EXYNOS4_MCT_G_TCON);
|
||||
tcon = __raw_readl(reg_base + EXYNOS4_MCT_G_TCON);
|
||||
tcon &= ~(MCT_G_TCON_COMP0_ENABLE | MCT_G_TCON_COMP0_AUTO_INC);
|
||||
|
||||
exynos4_mct_write(tcon, EXYNOS4_MCT_G_TCON);
|
||||
|
|
@ -180,7 +221,7 @@ static void exynos4_mct_comp0_start(enum clock_event_mode mode,
|
|||
unsigned int tcon;
|
||||
cycle_t comp_cycle;
|
||||
|
||||
tcon = __raw_readl(EXYNOS4_MCT_G_TCON);
|
||||
tcon = __raw_readl(reg_base + EXYNOS4_MCT_G_TCON);
|
||||
|
||||
if (mode == CLOCK_EVT_MODE_PERIODIC) {
|
||||
tcon |= MCT_G_TCON_COMP0_AUTO_INC;
|
||||
|
|
@ -257,11 +298,7 @@ static void exynos4_clockevent_init(void)
|
|||
mct_comp_device.cpumask = cpumask_of(0);
|
||||
clockevents_config_and_register(&mct_comp_device, clk_rate,
|
||||
0xf, 0xffffffff);
|
||||
|
||||
if (soc_is_exynos5250())
|
||||
setup_irq(EXYNOS5_IRQ_MCT_G0, &mct_comp_event_irq);
|
||||
else
|
||||
setup_irq(EXYNOS4_IRQ_MCT_G0, &mct_comp_event_irq);
|
||||
setup_irq(mct_irqs[MCT_G0_IRQ], &mct_comp_event_irq);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_LOCAL_TIMERS
|
||||
|
|
@ -273,12 +310,12 @@ static void exynos4_mct_tick_stop(struct mct_clock_event_device *mevt)
|
|||
{
|
||||
unsigned long tmp;
|
||||
unsigned long mask = MCT_L_TCON_INT_START | MCT_L_TCON_TIMER_START;
|
||||
void __iomem *addr = mevt->base + MCT_L_TCON_OFFSET;
|
||||
unsigned long offset = mevt->base + MCT_L_TCON_OFFSET;
|
||||
|
||||
tmp = __raw_readl(addr);
|
||||
tmp = __raw_readl(reg_base + offset);
|
||||
if (tmp & mask) {
|
||||
tmp &= ~mask;
|
||||
exynos4_mct_write(tmp, addr);
|
||||
exynos4_mct_write(tmp, offset);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -297,7 +334,7 @@ static void exynos4_mct_tick_start(unsigned long cycles,
|
|||
/* enable MCT tick interrupt */
|
||||
exynos4_mct_write(0x1, mevt->base + MCT_L_INT_ENB_OFFSET);
|
||||
|
||||
tmp = __raw_readl(mevt->base + MCT_L_TCON_OFFSET);
|
||||
tmp = __raw_readl(reg_base + mevt->base + MCT_L_TCON_OFFSET);
|
||||
tmp |= MCT_L_TCON_INT_START | MCT_L_TCON_TIMER_START |
|
||||
MCT_L_TCON_INTERVAL_MODE;
|
||||
exynos4_mct_write(tmp, mevt->base + MCT_L_TCON_OFFSET);
|
||||
|
|
@ -349,7 +386,7 @@ static int exynos4_mct_tick_clear(struct mct_clock_event_device *mevt)
|
|||
exynos4_mct_tick_stop(mevt);
|
||||
|
||||
/* Clear the MCT tick interrupt */
|
||||
if (__raw_readl(mevt->base + MCT_L_INT_CSTAT_OFFSET) & 1) {
|
||||
if (__raw_readl(reg_base + mevt->base + MCT_L_INT_CSTAT_OFFSET) & 1) {
|
||||
exynos4_mct_write(0x1, mevt->base + MCT_L_INT_CSTAT_OFFSET);
|
||||
return 1;
|
||||
} else {
|
||||
|
|
@ -385,7 +422,6 @@ static int __cpuinit exynos4_local_timer_setup(struct clock_event_device *evt)
|
|||
{
|
||||
struct mct_clock_event_device *mevt;
|
||||
unsigned int cpu = smp_processor_id();
|
||||
int mct_lx_irq;
|
||||
|
||||
mevt = this_cpu_ptr(&percpu_mct_tick);
|
||||
mevt->evt = evt;
|
||||
|
|
@ -406,21 +442,17 @@ static int __cpuinit exynos4_local_timer_setup(struct clock_event_device *evt)
|
|||
|
||||
if (mct_int_type == MCT_INT_SPI) {
|
||||
if (cpu == 0) {
|
||||
mct_lx_irq = soc_is_exynos4210() ? EXYNOS4_IRQ_MCT_L0 :
|
||||
EXYNOS5_IRQ_MCT_L0;
|
||||
mct_tick0_event_irq.dev_id = mevt;
|
||||
evt->irq = mct_lx_irq;
|
||||
setup_irq(mct_lx_irq, &mct_tick0_event_irq);
|
||||
evt->irq = mct_irqs[MCT_L0_IRQ];
|
||||
setup_irq(evt->irq, &mct_tick0_event_irq);
|
||||
} else {
|
||||
mct_lx_irq = soc_is_exynos4210() ? EXYNOS4_IRQ_MCT_L1 :
|
||||
EXYNOS5_IRQ_MCT_L1;
|
||||
mct_tick1_event_irq.dev_id = mevt;
|
||||
evt->irq = mct_lx_irq;
|
||||
setup_irq(mct_lx_irq, &mct_tick1_event_irq);
|
||||
irq_set_affinity(mct_lx_irq, cpumask_of(1));
|
||||
evt->irq = mct_irqs[MCT_L1_IRQ];
|
||||
setup_irq(evt->irq, &mct_tick1_event_irq);
|
||||
irq_set_affinity(evt->irq, cpumask_of(1));
|
||||
}
|
||||
} else {
|
||||
enable_percpu_irq(EXYNOS_IRQ_MCT_LOCALTIMER, 0);
|
||||
enable_percpu_irq(mct_irqs[MCT_L0_IRQ], 0);
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
|
@ -436,7 +468,7 @@ static void exynos4_local_timer_stop(struct clock_event_device *evt)
|
|||
else
|
||||
remove_irq(evt->irq, &mct_tick1_event_irq);
|
||||
else
|
||||
disable_percpu_irq(EXYNOS_IRQ_MCT_LOCALTIMER);
|
||||
disable_percpu_irq(mct_irqs[MCT_L0_IRQ]);
|
||||
}
|
||||
|
||||
static struct local_timer_ops exynos4_mct_tick_ops __cpuinitdata = {
|
||||
|
|
@ -445,41 +477,74 @@ static struct local_timer_ops exynos4_mct_tick_ops __cpuinitdata = {
|
|||
};
|
||||
#endif /* CONFIG_LOCAL_TIMERS */
|
||||
|
||||
static void __init exynos4_timer_resources(void)
|
||||
static void __init exynos4_timer_resources(struct device_node *np)
|
||||
{
|
||||
struct clk *mct_clk;
|
||||
mct_clk = clk_get(NULL, "xtal");
|
||||
|
||||
clk_rate = clk_get_rate(mct_clk);
|
||||
|
||||
reg_base = np ? of_iomap(np, 0) : S5P_VA_SYSTIMER;
|
||||
if (!reg_base)
|
||||
panic("%s: unable to ioremap mct address space\n", __func__);
|
||||
|
||||
#ifdef CONFIG_LOCAL_TIMERS
|
||||
if (mct_int_type == MCT_INT_PPI) {
|
||||
int err;
|
||||
|
||||
err = request_percpu_irq(EXYNOS_IRQ_MCT_LOCALTIMER,
|
||||
err = request_percpu_irq(mct_irqs[MCT_L0_IRQ],
|
||||
exynos4_mct_tick_isr, "MCT",
|
||||
&percpu_mct_tick);
|
||||
WARN(err, "MCT: can't request IRQ %d (%d)\n",
|
||||
EXYNOS_IRQ_MCT_LOCALTIMER, err);
|
||||
mct_irqs[MCT_L0_IRQ], err);
|
||||
}
|
||||
|
||||
local_timer_register(&exynos4_mct_tick_ops);
|
||||
#endif /* CONFIG_LOCAL_TIMERS */
|
||||
}
|
||||
|
||||
void __init exynos4_timer_init(void)
|
||||
static const struct of_device_id exynos_mct_ids[] = {
|
||||
{ .compatible = "samsung,exynos4210-mct", .data = (void *)MCT_INT_SPI },
|
||||
{ .compatible = "samsung,exynos4412-mct", .data = (void *)MCT_INT_PPI },
|
||||
};
|
||||
|
||||
void __init mct_init(void)
|
||||
{
|
||||
if (soc_is_exynos5440()) {
|
||||
arch_timer_of_register();
|
||||
return;
|
||||
struct device_node *np = NULL;
|
||||
const struct of_device_id *match;
|
||||
u32 nr_irqs, i;
|
||||
|
||||
#ifdef CONFIG_OF
|
||||
np = of_find_matching_node_and_match(NULL, exynos_mct_ids, &match);
|
||||
#endif
|
||||
if (np) {
|
||||
mct_int_type = (u32)(match->data);
|
||||
|
||||
/* This driver uses only one global timer interrupt */
|
||||
mct_irqs[MCT_G0_IRQ] = irq_of_parse_and_map(np, MCT_G0_IRQ);
|
||||
|
||||
/*
|
||||
* Find out the number of local irqs specified. The local
|
||||
* timer irqs are specified after the four global timer
|
||||
* irqs are specified.
|
||||
*/
|
||||
#ifdef CONFIG_OF
|
||||
nr_irqs = of_irq_count(np);
|
||||
#endif
|
||||
for (i = MCT_L0_IRQ; i < nr_irqs; i++)
|
||||
mct_irqs[i] = irq_of_parse_and_map(np, i);
|
||||
} else if (soc_is_exynos4210()) {
|
||||
mct_irqs[MCT_G0_IRQ] = EXYNOS4_IRQ_MCT_G0;
|
||||
mct_irqs[MCT_L0_IRQ] = EXYNOS4_IRQ_MCT_L0;
|
||||
mct_irqs[MCT_L1_IRQ] = EXYNOS4_IRQ_MCT_L1;
|
||||
mct_int_type = MCT_INT_SPI;
|
||||
} else {
|
||||
panic("unable to determine mct controller type\n");
|
||||
}
|
||||
|
||||
if ((soc_is_exynos4210()) || (soc_is_exynos5250()))
|
||||
mct_int_type = MCT_INT_SPI;
|
||||
else
|
||||
mct_int_type = MCT_INT_PPI;
|
||||
|
||||
exynos4_timer_resources();
|
||||
exynos4_timer_resources(np);
|
||||
exynos4_clocksource_init();
|
||||
exynos4_clockevent_init();
|
||||
}
|
||||
CLOCKSOURCE_OF_DECLARE(exynos4210, "samsung,exynos4210-mct", mct_init)
|
||||
CLOCKSOURCE_OF_DECLARE(exynos4412, "samsung,exynos4412-mct", mct_init)
|
||||
Загрузка…
Ссылка в новой задаче