From b54384e3ba6b5535751f317fcd3940a53eed0d3a Mon Sep 17 00:00:00 2001 From: Jean-Christophe PLAGNIOL-VILLARD Date: Fri, 15 May 2009 23:47:02 +0200 Subject: arm: timer and interrupt init rework actually the timer init use the interrupt_init as init callback which make the interrupt and timer implementation difficult to follow so now rename it as int timer_init(void) and use interrupt_init for interrupt btw also remane the corresponding file to the functionnality implemented as ixp arch implement two timer - one based on interrupt - so all the timer related code is moved to timer.c Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD --- cpu/pxa/Makefile | 8 +++- cpu/pxa/interrupts.c | 127 -------------------------------------------------- cpu/pxa/timer.c | 128 +++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 135 insertions(+), 128 deletions(-) delete mode 100644 cpu/pxa/interrupts.c create mode 100644 cpu/pxa/timer.c (limited to 'cpu/pxa') diff --git a/cpu/pxa/Makefile b/cpu/pxa/Makefile index 42903b2..5dc3a52 100644 --- a/cpu/pxa/Makefile +++ b/cpu/pxa/Makefile @@ -26,7 +26,13 @@ include $(TOPDIR)/config.mk LIB = $(obj)lib$(CPU).a START = start.o -COBJS = serial.o interrupts.o cpu.o i2c.o pxafb.o usb.o + +COBJS += cpu.o +COBJS += i2c.o +COBJS += pxafb.o +COBJS += serial.o +COBJS += timer.o +COBJS += usb.o SRCS := $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c) OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS)) diff --git a/cpu/pxa/interrupts.c b/cpu/pxa/interrupts.c deleted file mode 100644 index 2bc5c50..0000000 --- a/cpu/pxa/interrupts.c +++ /dev/null @@ -1,127 +0,0 @@ -/* - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH - * Marius Groeger - * - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH - * Alex Zuepke - * - * See file CREDITS for list of people who contributed to this - * project. - * - * 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 - */ - -#include -#include -#include - -#ifdef CONFIG_USE_IRQ -#error: interrupts not implemented yet -#endif - -#if defined(CONFIG_PXA27X) || defined(CONFIG_CPU_MONAHANS) -#define TIMER_FREQ_HZ 3250000 -#elif defined(CONFIG_PXA250) -#define TIMER_FREQ_HZ 3686400 -#else -#error "Timer frequency unknown - please config PXA CPU type" -#endif - -static inline unsigned long long tick_to_time(unsigned long long tick) -{ - tick *= CONFIG_SYS_HZ; - do_div(tick, TIMER_FREQ_HZ); - return tick; -} - -static inline unsigned long long us_to_tick(unsigned long long us) -{ - us = us * TIMER_FREQ_HZ + 999999; - do_div(us, 1000000); - return us; -} - -int interrupt_init (void) -{ - /* nothing happens here - we don't setup any IRQs */ - return (0); -} - -void reset_timer (void) -{ - reset_timer_masked (); -} - -ulong get_timer (ulong base) -{ - return get_timer_masked () - base; -} - -void set_timer (ulong t) -{ - /* nop */ -} - -void udelay (unsigned long usec) -{ - udelay_masked (usec); -} - - -void reset_timer_masked (void) -{ - OSCR = 0; -} - -ulong get_timer_masked (void) -{ - return tick_to_time(get_ticks()); -} - -void udelay_masked (unsigned long usec) -{ - unsigned long long tmp; - ulong tmo; - - tmo = us_to_tick(usec); - tmp = get_ticks() + tmo; /* get current timestamp */ - - while (get_ticks() < tmp) /* loop till event */ - /*NOP*/; - -} - -/* - * This function is derived from PowerPC code (read timebase as long long). - * On ARM it just returns the timer value. - */ -unsigned long long get_ticks(void) -{ - return OSCR; -} - -/* - * This function is derived from PowerPC code (timebase clock frequency). - * On ARM it returns the number of timer ticks per second. - */ -ulong get_tbclk (void) -{ - ulong tbclk; - tbclk = TIMER_FREQ_HZ; - return tbclk; -} diff --git a/cpu/pxa/timer.c b/cpu/pxa/timer.c new file mode 100644 index 0000000..e2df3a5 --- /dev/null +++ b/cpu/pxa/timer.c @@ -0,0 +1,128 @@ +/* + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH + * Marius Groeger + * + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH + * Alex Zuepke + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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 + */ + +#include +#include +#include + +#ifdef CONFIG_USE_IRQ +#error: interrupts not implemented yet +#endif + +#if defined(CONFIG_PXA27X) || defined(CONFIG_CPU_MONAHANS) +#define TIMER_FREQ_HZ 3250000 +#elif defined(CONFIG_PXA250) +#define TIMER_FREQ_HZ 3686400 +#else +#error "Timer frequency unknown - please config PXA CPU type" +#endif + +static inline unsigned long long tick_to_time(unsigned long long tick) +{ + tick *= CONFIG_SYS_HZ; + do_div(tick, TIMER_FREQ_HZ); + return tick; +} + +static inline unsigned long long us_to_tick(unsigned long long us) +{ + us = us * TIMER_FREQ_HZ + 999999; + do_div(us, 1000000); + return us; +} + +int timer_init (void) +{ + reset_timer(); + + return 0; +} + +void reset_timer (void) +{ + reset_timer_masked (); +} + +ulong get_timer (ulong base) +{ + return get_timer_masked () - base; +} + +void set_timer (ulong t) +{ + /* nop */ +} + +void udelay (unsigned long usec) +{ + udelay_masked (usec); +} + + +void reset_timer_masked (void) +{ + OSCR = 0; +} + +ulong get_timer_masked (void) +{ + return tick_to_time(get_ticks()); +} + +void udelay_masked (unsigned long usec) +{ + unsigned long long tmp; + ulong tmo; + + tmo = us_to_tick(usec); + tmp = get_ticks() + tmo; /* get current timestamp */ + + while (get_ticks() < tmp) /* loop till event */ + /*NOP*/; + +} + +/* + * This function is derived from PowerPC code (read timebase as long long). + * On ARM it just returns the timer value. + */ +unsigned long long get_ticks(void) +{ + return OSCR; +} + +/* + * This function is derived from PowerPC code (timebase clock frequency). + * On ARM it returns the number of timer ticks per second. + */ +ulong get_tbclk (void) +{ + ulong tbclk; + tbclk = TIMER_FREQ_HZ; + return tbclk; +} -- cgit v1.1