Commit 9d2aa8c7 authored by Linus Walleij's avatar Linus Walleij Committed by Arnd Bergmann
Browse files

ARM/clocksource: use automatic DT probing for ux500 PRCMU 



The ARM core kernel already calls clocksource_of_init() so why
go to all the trouble of locating and probing this node in the
machine. CLOCKSOURCE_OF_DECLARE() will take care of it in the
clocksource driver, and thus we can also get rid of the
dangling header file <linux/clksrc-dbx500-prcmu.h>

Suggested-by: default avatarArnd Bergmann <arndb@linaro.org>
Acked-by: default avatarThomas Gleixner <tglx@linutronix.de>
Acked-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent 75305275

arch/arm/mach-ux500/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -2,7 +2,7 @@ 
# Makefile for the linux kernel, U8500 machine.

#



obj-y				:= cpu.o id.o timer.o pm.o

obj-y				:= cpu.o id.o pm.o

obj-$(CONFIG_CACHE_L2X0)	+= cache-l2x0.o

obj-$(CONFIG_UX500_SOC_DB8500)	+= cpu-db8500.o

obj-$(CONFIG_MACH_MOP500)	+= board-mop500-regulators.o \

arch/arm/mach-ux500/cpu-db8500.c

+0 −2
Original line number Diff line number Diff line
@@ -156,8 +156,6 @@ static const char * stericsson_dt_platform_compat[] = { 
DT_MACHINE_START(U8500_DT, "ST-Ericsson Ux5x0 platform (Device Tree Support)")

	.map_io		= u8500_map_io,

	.init_irq	= ux500_init_irq,

	/* we re-use nomadik timer here */

	.init_time	= ux500_timer_init,

	.init_machine	= u8500_init_machine,

	.init_late	= NULL,

	.dt_compat      = stericsson_dt_platform_compat,

arch/arm/mach-ux500/cpu.c

+0 −1
Original line number Diff line number Diff line
@@ -9,7 +9,6 @@ 
#include <linux/platform_device.h>

#include <linux/io.h>

#include <linux/mfd/dbx500-prcmu.h>

#include <linux/clksrc-dbx500-prcmu.h>

#include <linux/sys_soc.h>

#include <linux/err.h>

#include <linux/slab.h>

arch/arm/mach-ux500/setup.h

+0 −3
Original line number Diff line number Diff line
@@ -12,7 +12,6 @@ 
#define __ASM_ARCH_SETUP_H



#include <asm/mach/arch.h>

#include <asm/mach/time.h>

#include <linux/init.h>

#include <linux/mfd/abx500/ab8500.h>
@@ -24,8 +23,6 @@ extern void __init ux500_init_irq(void); 


extern struct device *ux500_soc_device_init(const char *soc_id);



extern void ux500_timer_init(void);



extern void ux500_cpu_die(unsigned int cpu);



#endif /*  __ASM_ARCH_SETUP_H */

arch/arm/mach-ux500/timer.c

deleted100644 → 0
+0 −48
Original line number Diff line number Diff line 
/*

 * Copyright (C) ST-Ericsson SA 2011

 *

 * License Terms: GNU General Public License v2

 * Author: Mattias Wallin <mattias.wallin@stericsson.com> for ST-Ericsson

 */

#include <linux/io.h>

#include <linux/errno.h>

#include <linux/clksrc-dbx500-prcmu.h>

#include <linux/clocksource.h>

#include <linux/of.h>

#include <linux/of_address.h>



#include "setup.h"



#include "db8500-regs.h"

#include "id.h"



static const struct of_device_id prcmu_timer_of_match[] __initconst = {

	{ .compatible = "stericsson,db8500-prcmu-timer-4", },

	{ },

};



void __init ux500_timer_init(void)

{

	void __iomem *prcmu_timer_base;

	void __iomem *tmp_base;

	struct device_node *np;



	if (cpu_is_u8500_family() || cpu_is_ux540_family())

		prcmu_timer_base = __io_address(U8500_PRCMU_TIMER_4_BASE);

	else

		ux500_unknown_soc();



	np = of_find_matching_node(NULL, prcmu_timer_of_match);

	if (!np)

		goto dt_fail;



	tmp_base = of_iomap(np, 0);

	if (!tmp_base)

		goto dt_fail;



	prcmu_timer_base = tmp_base;



dt_fail:

	clksrc_dbx500_prcmu_init(prcmu_timer_base);

	clocksource_probe();

}

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