From e129440af63879808ee0a40613fd1cece935678e Mon Sep 17 00:00:00 2001 From: Pawel Moll Date: Thu, 23 Feb 2012 14:57:11 +0000 Subject: ARM: versatile: Map local timers using Device Tree when possible Try to map TWD registers basing on a "arm,*-twd-timer" Device Tree node. This overrides existing twd_base value. Signed-off-by: Pawel Moll --- arch/arm/plat-versatile/localtimer.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'arch/arm/plat-versatile') diff --git a/arch/arm/plat-versatile/localtimer.c b/arch/arm/plat-versatile/localtimer.c index 0fb3961999b5..e15668793159 100644 --- a/arch/arm/plat-versatile/localtimer.c +++ b/arch/arm/plat-versatile/localtimer.c @@ -11,16 +11,42 @@ #include #include #include +#include +#include #include #include #include +const static struct of_device_id twd_of_match[] __initconst = { + { .compatible = "arm,cortex-a9-twd-timer", }, + { .compatible = "arm,cortex-a5-twd-timer", }, + { .compatible = "arm,arm11mp-twd-timer", }, + { }, +}; + /* * Setup the local clock events for a CPU. */ int __cpuinit local_timer_setup(struct clock_event_device *evt) { +#if defined(CONFIG_OF) + static int dt_node_probed; + + /* Look for TWD node only once */ + if (!dt_node_probed) { + struct device_node *node = of_find_matching_node(NULL, + twd_of_match); + + if (node) + twd_base = of_iomap(node, 0); + + dt_node_probed = 1; + } +#endif + if (!twd_base) + return -ENXIO; + evt->irq = IRQ_LOCALTIMER; twd_timer_setup(evt); return 0; -- cgit v1.2.1 From 7c380f273cf09b202e4bc9cbe137aef1870b8a20 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Thu, 4 Aug 2011 11:57:04 +0100 Subject: ARM: plat-versatile: convert to twd_local_timer_register() interface Add support for the new smp_twd runtime registration interface to the RealView/VE platforms, and remove the old compile-time support. Tested on EB11MP. Signed-off-by: Marc Zyngier --- arch/arm/plat-versatile/Makefile | 1 - arch/arm/plat-versatile/localtimer.c | 53 ------------------------------------ 2 files changed, 54 deletions(-) delete mode 100644 arch/arm/plat-versatile/localtimer.c (limited to 'arch/arm/plat-versatile') diff --git a/arch/arm/plat-versatile/Makefile b/arch/arm/plat-versatile/Makefile index 69714db47c33..a5cb1945bdcc 100644 --- a/arch/arm/plat-versatile/Makefile +++ b/arch/arm/plat-versatile/Makefile @@ -1,5 +1,4 @@ obj-y := clock.o -obj-$(CONFIG_LOCAL_TIMERS) += localtimer.o obj-$(CONFIG_PLAT_VERSATILE_CLCD) += clcd.o obj-$(CONFIG_PLAT_VERSATILE_FPGA_IRQ) += fpga-irq.o obj-$(CONFIG_PLAT_VERSATILE_LEDS) += leds.o diff --git a/arch/arm/plat-versatile/localtimer.c b/arch/arm/plat-versatile/localtimer.c deleted file mode 100644 index e15668793159..000000000000 --- a/arch/arm/plat-versatile/localtimer.c +++ /dev/null @@ -1,53 +0,0 @@ -/* - * linux/arch/arm/plat-versatile/localtimer.c - * - * Copyright (C) 2002 ARM Ltd. - * All Rights Reserved - * - * 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 -#include -#include -#include -#include - -#include -#include -#include - -const static struct of_device_id twd_of_match[] __initconst = { - { .compatible = "arm,cortex-a9-twd-timer", }, - { .compatible = "arm,cortex-a5-twd-timer", }, - { .compatible = "arm,arm11mp-twd-timer", }, - { }, -}; - -/* - * Setup the local clock events for a CPU. - */ -int __cpuinit local_timer_setup(struct clock_event_device *evt) -{ -#if defined(CONFIG_OF) - static int dt_node_probed; - - /* Look for TWD node only once */ - if (!dt_node_probed) { - struct device_node *node = of_find_matching_node(NULL, - twd_of_match); - - if (node) - twd_base = of_iomap(node, 0); - - dt_node_probed = 1; - } -#endif - if (!twd_base) - return -ENXIO; - - evt->irq = IRQ_LOCALTIMER; - twd_timer_setup(evt); - return 0; -} -- cgit v1.2.1