diff options
author | Kevin Hilman <khilman@mvista.com> | 2007-11-12 23:24:05 -0800 |
---|---|---|
committer | Tony Lindgren <tony@atomide.com> | 2008-04-14 09:57:12 -0700 |
commit | a57fb870c8c4864031d7568f91e882e93238c9cb (patch) | |
tree | f6b902a2d4db8658c37034cbffe7eb53623bda7f /arch/arm/plat-omap | |
parent | f258b0c6fa6ca653c7f4e6e2846dbb7ed3af3446 (diff) |
ARM: OMAP: Timer32K: Move timer32k to mach-omap1
Move now OMAP1-specific timer32k code to mach-omap1 since OMAP2/3 32k
timers are done in gptimer code.
Signed-off-by: Kevin Hilman <khilman@mvista.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/plat-omap')
-rw-r--r-- | arch/arm/plat-omap/Makefile | 4 | ||||
-rw-r--r-- | arch/arm/plat-omap/timer32k.c | 201 |
2 files changed, 0 insertions, 205 deletions
diff --git a/arch/arm/plat-omap/Makefile b/arch/arm/plat-omap/Makefile index d91424edf57..bc639a30d6d 100644 --- a/arch/arm/plat-omap/Makefile +++ b/arch/arm/plat-omap/Makefile @@ -9,10 +9,6 @@ obj-m := obj-n := obj- := -ifeq ($(CONFIG_ARCH_OMAP1),y) -obj-$(CONFIG_OMAP_32K_TIMER) += timer32k.o -endif - # OCPI interconnect support for 1710, 1610 and 5912 obj-$(CONFIG_ARCH_OMAP16XX) += ocpi.o diff --git a/arch/arm/plat-omap/timer32k.c b/arch/arm/plat-omap/timer32k.c deleted file mode 100644 index 1f7365f5df2..00000000000 --- a/arch/arm/plat-omap/timer32k.c +++ /dev/null @@ -1,201 +0,0 @@ -/* - * linux/arch/arm/plat-omap/timer32k.c - * - * OMAP 32K Timer - * - * Copyright (C) 2004 - 2005 Nokia Corporation - * Partial timer rewrite and additional dynamic tick timer support by - * Tony Lindgen <tony@atomide.com> and - * Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com> - * OMAP Dual-mode timer framework support by Timo Teras - * - * MPU timer code based on the older MPU timer code for OMAP - * Copyright (C) 2000 RidgeRun, Inc. - * Author: Greg Lonnon <glonnon@ridgerun.com> - * - * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * 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., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/interrupt.h> -#include <linux/sched.h> -#include <linux/spinlock.h> - -#include <linux/err.h> -#include <linux/clk.h> -#include <linux/clocksource.h> -#include <linux/clockchips.h> - -#include <asm/system.h> -#include <asm/hardware.h> -#include <asm/io.h> -#include <asm/leds.h> -#include <asm/irq.h> -#include <asm/mach/irq.h> -#include <asm/mach/time.h> -#include <asm/arch/dmtimer.h> - -struct sys_timer omap_timer; - -/* - * --------------------------------------------------------------------------- - * 32KHz OS timer - * - * This currently works only on 16xx, as 1510 does not have the continuous - * 32KHz synchronous timer. The 32KHz synchronous timer is used to keep track - * of time in addition to the 32KHz OS timer. Using only the 32KHz OS timer - * on 1510 would be possible, but the timer would not be as accurate as - * with the 32KHz synchronized timer. - * --------------------------------------------------------------------------- - */ - -#if defined(CONFIG_ARCH_OMAP16XX) -#define TIMER_32K_SYNCHRONIZED 0xfffbc410 -#elif defined(CONFIG_ARCH_OMAP24XX) -#define TIMER_32K_SYNCHRONIZED (OMAP24XX_32KSYNCT_BASE + 0x10) -#else -#error OMAP 32KHz timer does not currently work on 15XX! -#endif - -/* 16xx specific defines */ -#define OMAP1_32K_TIMER_BASE 0xfffb9000 -#define OMAP1_32K_TIMER_CR 0x08 -#define OMAP1_32K_TIMER_TVR 0x00 -#define OMAP1_32K_TIMER_TCR 0x04 - -#define OMAP_32K_TICKS_PER_SEC (32768) - -/* - * TRM says 1 / HZ = ( TVR + 1) / 32768, so TRV = (32768 / HZ) - 1 - * so with HZ = 128, TVR = 255. - */ -#define OMAP_32K_TIMER_TICK_PERIOD ((OMAP_32K_TICKS_PER_SEC / HZ) - 1) - -#define JIFFIES_TO_HW_TICKS(nr_jiffies, clock_rate) \ - (((nr_jiffies) * (clock_rate)) / HZ) - -static inline void omap_32k_timer_write(int val, int reg) -{ - omap_writew(val, OMAP1_32K_TIMER_BASE + reg); -} - -static inline unsigned long omap_32k_timer_read(int reg) -{ - return omap_readl(OMAP1_32K_TIMER_BASE + reg) & 0xffffff; -} - -static inline void omap_32k_timer_start(unsigned long load_val) -{ - if (!load_val) - load_val = 1; - omap_32k_timer_write(load_val, OMAP1_32K_TIMER_TVR); - omap_32k_timer_write(0x0f, OMAP1_32K_TIMER_CR); -} - -static inline void omap_32k_timer_stop(void) -{ - omap_32k_timer_write(0x0, OMAP1_32K_TIMER_CR); -} - -#define omap_32k_timer_ack_irq() - -static void omap_32k_timer_set_mode(enum clock_event_mode mode, - struct clock_event_device *evt) -{ - omap_32k_timer_stop(); - - switch (mode) { - case CLOCK_EVT_MODE_PERIODIC: - omap_32k_timer_start(OMAP_32K_TIMER_TICK_PERIOD); - break; - case CLOCK_EVT_MODE_ONESHOT: - case CLOCK_EVT_MODE_UNUSED: - case CLOCK_EVT_MODE_SHUTDOWN: - break; - case CLOCK_EVT_MODE_RESUME: - break; - } -} - -static struct clock_event_device clockevent_32k_timer = { - .name = "32k-timer", - .features = CLOCK_EVT_FEAT_PERIODIC, - .shift = 32, - .set_mode = omap_32k_timer_set_mode, -}; - -/* - * The 32KHz synchronized timer is an additional timer on 16xx. - * It is always running. - */ -static inline unsigned long omap_32k_sync_timer_read(void) -{ - return omap_readl(TIMER_32K_SYNCHRONIZED); -} - -static irqreturn_t omap_32k_timer_interrupt(int irq, void *dev_id) -{ - struct clock_event_device *evt = &clockevent_32k_timer; - omap_32k_timer_ack_irq(); - - evt->event_handler(evt); - - return IRQ_HANDLED; -} - -static struct irqaction omap_32k_timer_irq = { - .name = "32KHz timer", - .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, - .handler = omap_32k_timer_interrupt, -}; - -static __init void omap_init_32k_timer(void) -{ - clockevent_32k_timer.mult = div_sc(OMAP_32K_TICKS_PER_SEC, - NSEC_PER_SEC, - clockevent_32k_timer.shift); - clockevent_32k_timer.max_delta_ns = - clockevent_delta2ns(0xfffffffe, &clockevent_32k_timer); - clockevent_32k_timer.min_delta_ns = - clockevent_delta2ns(1, &clockevent_32k_timer); - - clockevent_32k_timer.cpumask = cpumask_of_cpu(0); - clockevents_register_device(&clockevent_32k_timer); -} - -/* - * --------------------------------------------------------------------------- - * Timer initialization - * --------------------------------------------------------------------------- - */ -static void __init omap_timer_init(void) -{ -#ifdef CONFIG_OMAP_DM_TIMER - omap_dm_timer_init(); -#endif - omap_init_32k_timer(); -} - -struct sys_timer omap_timer = { - .init = omap_timer_init, -}; |