From 9d2aa8c7961ae9af5f75af2dc171dd4e4f441e89 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Tue, 1 Dec 2015 15:00:24 +0100 Subject: [PATCH] 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 Suggested-by: Arnd Bergmann Acked-by: Thomas Gleixner Acked-by: Daniel Lezcano Signed-off-by: Linus Walleij Signed-off-by: Arnd Bergmann --- arch/arm/mach-ux500/Makefile | 2 +- arch/arm/mach-ux500/cpu-db8500.c | 2 - arch/arm/mach-ux500/cpu.c | 1 - arch/arm/mach-ux500/setup.h | 3 -- arch/arm/mach-ux500/timer.c | 48 ----------------------- drivers/clocksource/clksrc-dbx500-prcmu.c | 9 +++-- include/linux/clksrc-dbx500-prcmu.h | 20 ---------- 7 files changed, 7 insertions(+), 78 deletions(-) delete mode 100644 arch/arm/mach-ux500/timer.c delete mode 100644 include/linux/clksrc-dbx500-prcmu.h diff --git a/arch/arm/mach-ux500/Makefile b/arch/arm/mach-ux500/Makefile index c8643ac5db71..edfff1ae1f8d 100644 --- a/arch/arm/mach-ux500/Makefile +++ b/arch/arm/mach-ux500/Makefile @@ -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 \ diff --git a/arch/arm/mach-ux500/cpu-db8500.c b/arch/arm/mach-ux500/cpu-db8500.c index f80560318c58..a0ffaad1fb61 100644 --- a/arch/arm/mach-ux500/cpu-db8500.c +++ b/arch/arm/mach-ux500/cpu-db8500.c @@ -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, diff --git a/arch/arm/mach-ux500/cpu.c b/arch/arm/mach-ux500/cpu.c index 41b81c4fbe63..82156cbc22ce 100644 --- a/arch/arm/mach-ux500/cpu.c +++ b/arch/arm/mach-ux500/cpu.c @@ -9,7 +9,6 @@ #include #include #include -#include #include #include #include diff --git a/arch/arm/mach-ux500/setup.h b/arch/arm/mach-ux500/setup.h index 65876eac0761..c704254ab67c 100644 --- a/arch/arm/mach-ux500/setup.h +++ b/arch/arm/mach-ux500/setup.h @@ -12,7 +12,6 @@ #define __ASM_ARCH_SETUP_H #include -#include #include #include @@ -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 */ diff --git a/arch/arm/mach-ux500/timer.c b/arch/arm/mach-ux500/timer.c deleted file mode 100644 index 8d2d233f8e6c..000000000000 --- a/arch/arm/mach-ux500/timer.c +++ /dev/null @@ -1,48 +0,0 @@ -/* - * Copyright (C) ST-Ericsson SA 2011 - * - * License Terms: GNU General Public License v2 - * Author: Mattias Wallin for ST-Ericsson - */ -#include -#include -#include -#include -#include -#include - -#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(); -} diff --git a/drivers/clocksource/clksrc-dbx500-prcmu.c b/drivers/clocksource/clksrc-dbx500-prcmu.c index b375106844d8..dfad6eb99662 100644 --- a/drivers/clocksource/clksrc-dbx500-prcmu.c +++ b/drivers/clocksource/clksrc-dbx500-prcmu.c @@ -12,8 +12,9 @@ * power domain. We use the Timer 4 for our always-on clock * source on DB8500. */ +#include +#include #include -#include #include #define RATE_32K 32768 @@ -63,9 +64,9 @@ static u64 notrace dbx500_prcmu_sched_clock_read(void) #endif -void __init clksrc_dbx500_prcmu_init(void __iomem *base) +static void __init clksrc_dbx500_prcmu_init(struct device_node *node) { - clksrc_dbx500_timer_base = base; + clksrc_dbx500_timer_base = of_iomap(node, 0); /* * The A9 sub system expects the timer to be configured as @@ -85,3 +86,5 @@ void __init clksrc_dbx500_prcmu_init(void __iomem *base) #endif clocksource_register_hz(&clocksource_dbx500_prcmu, RATE_32K); } +CLOCKSOURCE_OF_DECLARE(dbx500_prcmu, "stericsson,db8500-prcmu-timer-4", + clksrc_dbx500_prcmu_init); diff --git a/include/linux/clksrc-dbx500-prcmu.h b/include/linux/clksrc-dbx500-prcmu.h deleted file mode 100644 index 4fb8119c49e4..000000000000 --- a/include/linux/clksrc-dbx500-prcmu.h +++ /dev/null @@ -1,20 +0,0 @@ -/* - * Copyright (C) ST-Ericsson SA 2011 - * - * License Terms: GNU General Public License v2 - * Author: Mattias Wallin - * - */ -#ifndef __CLKSRC_DBX500_PRCMU_H -#define __CLKSRC_DBX500_PRCMU_H - -#include -#include - -#ifdef CONFIG_CLKSRC_DBX500_PRCMU -void __init clksrc_dbx500_prcmu_init(void __iomem *base); -#else -static inline void __init clksrc_dbx500_prcmu_init(void __iomem *base) {} -#endif - -#endif -- 2.39.2