From 489bccea6334514a8e13436f10d0a274777bf17a Mon Sep 17 00:00:00 2001 From: Mattias Wallin Date: Fri, 27 May 2011 10:30:12 +0200 Subject: clocksource: add DBX500 PRCMU Timer support This patch adds the DBX500 PRCMU Timer driver as a clocksource and as sched_clock. Cc: Thomas Gleixner Signed-off-by: Mattias Wallin Signed-off-by: Jonas Aaberg Signed-off-by: Linus Walleij --- include/linux/clksrc-dbx500-prcmu.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 include/linux/clksrc-dbx500-prcmu.h (limited to 'include/linux') diff --git a/include/linux/clksrc-dbx500-prcmu.h b/include/linux/clksrc-dbx500-prcmu.h new file mode 100644 index 000000000000..d1e95042408b --- /dev/null +++ b/include/linux/clksrc-dbx500-prcmu.h @@ -0,0 +1,22 @@ +/* + * 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 + +extern void __iomem *clksrc_dbx500_timer_base; + +#ifdef CONFIG_CLKSRC_DBX500_PRCMU +void __init clksrc_dbx500_prcmu_init(void); +#else +void __init clksrc_dbx500_prcmu_init(void) {} +#endif + +#endif -- cgit v1.2.3 From b1e3be0647fec81887e55edbda0c56c0445f7b53 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Mon, 3 Oct 2011 09:30:20 +0200 Subject: clocksource: fixup ux500 build problems Based on a patch from Arnd Bergmann this fixes up the build problem of assigning a non-existing global when the ux500 PRCMU timer is not linked in by passing its base address to the init function. We also add a missing inclusion and staticize the dummy function. Cc: Arnd Bergmann Signed-off-by: Linus Walleij --- arch/arm/mach-ux500/timer.c | 9 ++++++--- drivers/clocksource/clksrc-dbx500-prcmu.c | 6 ++++-- include/linux/clksrc-dbx500-prcmu.h | 6 ++---- 3 files changed, 12 insertions(+), 9 deletions(-) (limited to 'include/linux') diff --git a/arch/arm/mach-ux500/timer.c b/arch/arm/mach-ux500/timer.c index 08c55a53cb83..aea467d04ff7 100644 --- a/arch/arm/mach-ux500/timer.c +++ b/arch/arm/mach-ux500/timer.c @@ -5,6 +5,7 @@ * Author: Mattias Wallin for ST-Ericsson */ #include +#include #include #include @@ -16,18 +17,20 @@ static void __init ux500_timer_init(void) { + void __iomem *prcmu_timer_base; + if (cpu_is_u5500()) { #ifdef CONFIG_LOCAL_TIMERS twd_base = __io_address(U5500_TWD_BASE); #endif mtu_base = __io_address(U5500_MTU0_BASE); - clksrc_dbx500_timer_base = __io_address(U5500_PRCMU_TIMER_3_BASE); + prcmu_timer_base = __io_address(U5500_PRCMU_TIMER_3_BASE); } else if (cpu_is_u8500()) { #ifdef CONFIG_LOCAL_TIMERS twd_base = __io_address(U8500_TWD_BASE); #endif mtu_base = __io_address(U8500_MTU0_BASE); - clksrc_dbx500_timer_base = __io_address(U8500_PRCMU_TIMER_4_BASE); + prcmu_timer_base = __io_address(U8500_PRCMU_TIMER_4_BASE); } else { ux500_unknown_soc(); } @@ -50,7 +53,7 @@ static void __init ux500_timer_init(void) */ nmdk_timer_init(); - clksrc_dbx500_prcmu_init(); + clksrc_dbx500_prcmu_init(prcmu_timer_base); } static void ux500_timer_reset(void) diff --git a/drivers/clocksource/clksrc-dbx500-prcmu.c b/drivers/clocksource/clksrc-dbx500-prcmu.c index 0ac5093a053a..59feefe0e3e6 100644 --- a/drivers/clocksource/clksrc-dbx500-prcmu.c +++ b/drivers/clocksource/clksrc-dbx500-prcmu.c @@ -31,7 +31,7 @@ #define SCHED_CLOCK_MIN_WRAP 131072 /* 2^32 / 32768 */ -void __iomem *clksrc_dbx500_timer_base; +static void __iomem *clksrc_dbx500_timer_base; static cycle_t clksrc_dbx500_prcmu_read(struct clocksource *cs) { @@ -79,8 +79,10 @@ static void notrace clksrc_dbx500_prcmu_update_sched_clock(void) } #endif -void __init clksrc_dbx500_prcmu_init(void) +void __init clksrc_dbx500_prcmu_init(void __iomem *base) { + clksrc_dbx500_timer_base = base; + /* * The A9 sub system expects the timer to be configured as * a continous looping timer. diff --git a/include/linux/clksrc-dbx500-prcmu.h b/include/linux/clksrc-dbx500-prcmu.h index d1e95042408b..4fb8119c49e4 100644 --- a/include/linux/clksrc-dbx500-prcmu.h +++ b/include/linux/clksrc-dbx500-prcmu.h @@ -11,12 +11,10 @@ #include #include -extern void __iomem *clksrc_dbx500_timer_base; - #ifdef CONFIG_CLKSRC_DBX500_PRCMU -void __init clksrc_dbx500_prcmu_init(void); +void __init clksrc_dbx500_prcmu_init(void __iomem *base); #else -void __init clksrc_dbx500_prcmu_init(void) {} +static inline void __init clksrc_dbx500_prcmu_init(void __iomem *base) {} #endif #endif -- cgit v1.2.3