diff options
| -rw-r--r-- | arch/arm/mach-bcmring/include/mach/timer.h | 77 | ||||
| -rw-r--r-- | arch/arm/mach-bcmring/include/mach/timex.h | 25 | ||||
| -rw-r--r-- | arch/arm/mach-bcmring/timer.c | 62 |
3 files changed, 164 insertions, 0 deletions
diff --git a/arch/arm/mach-bcmring/include/mach/timer.h b/arch/arm/mach-bcmring/include/mach/timer.h new file mode 100644 index 00000000000..5a94bbb032b --- /dev/null +++ b/arch/arm/mach-bcmring/include/mach/timer.h @@ -0,0 +1,77 @@ +/***************************************************************************** +* Copyright 2004 - 2008 Broadcom Corporation. All rights reserved. +* +* Unless you and Broadcom execute a separate written software license +* agreement governing use of this software, this software is licensed to you +* under the terms of the GNU General Public License version 2, available at +* http://www.broadcom.com/licenses/GPLv2.php (the "GPL"). +* +* Notwithstanding the above, under no circumstances may you combine this +* software in any way with any other Broadcom software provided under a +* license other than the GPL, without Broadcom's express prior written +* consent. +*****************************************************************************/ + +/* +* +***************************************************************************** +* +* timer.h +* +* PURPOSE: +* +* +* +* NOTES: +* +*****************************************************************************/ + +#if !defined(BCM_LINUX_TIMER_H) +#define BCM_LINUX_TIMER_H + +#if defined(__KERNEL__) + +/* ---- Include Files ---------------------------------------------------- */ +/* ---- Constants and Types ---------------------------------------------- */ + +typedef unsigned int timer_tick_count_t; +typedef unsigned int timer_tick_rate_t; +typedef unsigned int timer_msec_t; + +/* ---- Variable Externs ------------------------------------------------- */ +/* ---- Function Prototypes ---------------------------------------------- */ + +/**************************************************************************** +* +* timer_get_tick_count +* +* +***************************************************************************/ +timer_tick_count_t timer_get_tick_count(void); + +/**************************************************************************** +* +* timer_get_tick_rate +* +* +***************************************************************************/ +timer_tick_rate_t timer_get_tick_rate(void); + +/**************************************************************************** +* +* timer_get_msec +* +* +***************************************************************************/ +timer_msec_t timer_get_msec(void); + +/**************************************************************************** +* +* timer_ticks_to_msec +* +* +***************************************************************************/ +timer_msec_t timer_ticks_to_msec(timer_tick_count_t ticks); + +#endif /* __KERNEL__ */ +#endif /* BCM_LINUX_TIMER_H */ diff --git a/arch/arm/mach-bcmring/include/mach/timex.h b/arch/arm/mach-bcmring/include/mach/timex.h new file mode 100644 index 00000000000..40d033ec589 --- /dev/null +++ b/arch/arm/mach-bcmring/include/mach/timex.h @@ -0,0 +1,25 @@ +/* + * + * Integrator architecture timex specifications + * + * Copyright (C) 1999 ARM Limited + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +/* + * Specifies the number of ticks per second + */ +#define CLOCK_TICK_RATE 100000 /* REG_SMT_TICKS_PER_SEC */ diff --git a/arch/arm/mach-bcmring/timer.c b/arch/arm/mach-bcmring/timer.c new file mode 100644 index 00000000000..2d415d2a8e6 --- /dev/null +++ b/arch/arm/mach-bcmring/timer.c @@ -0,0 +1,62 @@ +/***************************************************************************** +* Copyright 2003 - 2008 Broadcom Corporation. All rights reserved. +* +* Unless you and Broadcom execute a separate written software license +* agreement governing use of this software, this software is licensed to you +* under the terms of the GNU General Public License version 2, available at +* http://www.broadcom.com/licenses/GPLv2.php (the "GPL"). +* +* Notwithstanding the above, under no circumstances may you combine this +* software in any way with any other Broadcom software provided under a +* license other than the GPL, without Broadcom's express prior written +* consent. +*****************************************************************************/ + +#include <linux/version.h> +#include <linux/types.h> +#include <linux/module.h> +#include <csp/tmrHw.h> + +#include <mach/timer.h> +/* The core.c file initializes timers 1 and 3 as a linux clocksource. */ +/* The real time clock should probably be the real linux clocksource. */ +/* In the meantime, this file should agree with core.c as to the */ +/* profiling timer. If the clocksource is moved to rtc later, then */ +/* we can init the profiling timer here instead. */ + +/* Timer 1 provides 25MHz resolution syncrhonized to scheduling and APM timing */ +/* Timer 3 provides bus freqeuncy sychronized to ACLK, but spread spectrum will */ +/* affect synchronization with scheduling and APM timing. */ + +#define PROF_TIMER 1 + +timer_tick_rate_t timer_get_tick_rate(void) +{ + return tmrHw_getCountRate(PROF_TIMER); +} + +timer_tick_count_t timer_get_tick_count(void) +{ + return tmrHw_GetCurrentCount(PROF_TIMER); /* change downcounter to upcounter */ +} + +timer_msec_t timer_ticks_to_msec(timer_tick_count_t ticks) +{ + static int tickRateMsec; + + if (tickRateMsec == 0) { + tickRateMsec = timer_get_tick_rate() / 1000; + } + + return ticks / tickRateMsec; +} + +timer_msec_t timer_get_msec(void) +{ + return timer_ticks_to_msec(timer_get_tick_count()); +} + +EXPORT_SYMBOL(timer_get_tick_count); +EXPORT_SYMBOL(timer_ticks_to_msec); +EXPORT_SYMBOL(timer_get_tick_rate); +EXPORT_SYMBOL(timer_get_msec); |