config ARCH_MXC
bool "Freescale MXC/iMX-based"
+ select GENERIC_TIME
+ select GENERIC_CLOCKEVENTS
select ARCH_MTD_XIP
select GENERIC_GPIO
select HAVE_GPIO_LIB
# Object file lists.
-obj-y := mm.o time.o clock.o devices.o iomux.o
+obj-y := mm.o clock.o devices.o iomux.o
obj-$(CONFIG_MACH_MX31ADS) += mx31ads.o
#include <asm/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
+#include <asm/mach/time.h>
#include <asm/memory.h>
#include <asm/mach/map.h>
#include <asm/arch/common.h>
mxc_init_extuart();
}
+static void __init mx31ads_timer_init(void)
+{
+ mxc_clocks_init(26000000);
+ mxc_timer_init("ipg_clk.0");
+}
+
+struct sys_timer mx31ads_timer = {
+ .init = mx31ads_timer_init,
+};
+
/*
* The following uses standard kernel macros defined in arch.h in order to
* initialize __mach_desc_MX31ADS data structure.
.map_io = mx31ads_map_io,
.init_irq = mxc_init_irq,
.init_machine = mxc_board_init,
- .timer = &mxc_timer,
+ .timer = &mx31ads_timer,
MACHINE_END
+++ /dev/null
-/*
- * System Timer Interrupt reconfigured to run in free-run mode.
- * Author: Vitaly Wool
- * Copyright 2004 MontaVista Software Inc.
- * Copyright 2004-2007 Freescale Semiconductor, Inc. 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.
- */
-
-/*!
- * @file time.c
- * @brief This file contains OS tick and wdog timer implementations.
- *
- * This file contains OS tick and wdog timer implementations.
- *
- * @ingroup Timers
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <asm/hardware.h>
-#include <asm/mach/time.h>
-#include <asm/io.h>
-#include <asm/arch/common.h>
-
-/*!
- * This is the timer interrupt service routine to do required tasks.
- * It also services the WDOG timer at the frequency of twice per WDOG
- * timeout value. For example, if the WDOG's timeout value is 4 (2
- * seconds since the WDOG runs at 0.5Hz), it will be serviced once
- * every 2/2=1 second.
- *
- * @param irq GPT interrupt source number (not used)
- * @param dev_id this parameter is not used
- * @return always returns \b IRQ_HANDLED as defined in
- * include/linux/interrupt.h.
- */
-static irqreturn_t mxc_timer_interrupt(int irq, void *dev_id)
-{
- unsigned int next_match;
-
- if (__raw_readl(MXC_GPT_GPTSR) & GPTSR_OF1) {
- do {
- timer_tick();
- next_match = __raw_readl(MXC_GPT_GPTOCR1) + LATCH;
- __raw_writel(GPTSR_OF1, MXC_GPT_GPTSR);
- __raw_writel(next_match, MXC_GPT_GPTOCR1);
- } while ((signed long)(next_match -
- __raw_readl(MXC_GPT_GPTCNT)) <= 0);
- }
-
- return IRQ_HANDLED;
-}
-
-/*!
- * This function is used to obtain the number of microseconds since the last
- * timer interrupt. Note that interrupts is disabled by do_gettimeofday().
- *
- * @return the number of microseconds since the last timer interrupt.
- */
-static unsigned long mxc_gettimeoffset(void)
-{
- unsigned long ticks_to_match, elapsed, usec, tick_usec, i;
-
- /* Get ticks before next timer match */
- ticks_to_match =
- __raw_readl(MXC_GPT_GPTOCR1) - __raw_readl(MXC_GPT_GPTCNT);
-
- /* We need elapsed ticks since last match */
- elapsed = LATCH - ticks_to_match;
-
- /* Now convert them to usec */
- /* Insure no overflow when calculating the usec below */
- for (i = 1, tick_usec = tick_nsec / 1000;; i *= 2) {
- tick_usec /= i;
- if ((0xFFFFFFFF / tick_usec) > elapsed)
- break;
- }
- usec = (unsigned long)(elapsed * tick_usec) / (LATCH / i);
-
- return usec;
-}
-
-/*!
- * The OS tick timer interrupt structure.
- */
-static struct irqaction timer_irq = {
- .name = "MXC Timer Tick",
- .flags = IRQF_DISABLED | IRQF_TIMER,
- .handler = mxc_timer_interrupt
-};
-
-/*!
- * This function is used to initialize the GPT to produce an interrupt
- * based on HZ. It is called by start_kernel() during system startup.
- */
-void __init mxc_init_time(void)
-{
- u32 reg, v;
- reg = __raw_readl(MXC_GPT_GPTCR);
- reg &= ~GPTCR_ENABLE;
- __raw_writel(reg, MXC_GPT_GPTCR);
- reg |= GPTCR_SWR;
- __raw_writel(reg, MXC_GPT_GPTCR);
-
- while ((__raw_readl(MXC_GPT_GPTCR) & GPTCR_SWR) != 0)
- cpu_relax();
-
- reg = GPTCR_FRR | GPTCR_CLKSRC_HIGHFREQ;
- __raw_writel(reg, MXC_GPT_GPTCR);
-
- /* TODO: get timer rate from clk driver */
- v = 66500000;
-
- __raw_writel((v / CLOCK_TICK_RATE) - 1, MXC_GPT_GPTPR);
-
- if ((v % CLOCK_TICK_RATE) != 0) {
- pr_info("\nWARNING: Can't generate CLOCK_TICK_RATE at %d Hz\n",
- CLOCK_TICK_RATE);
- }
- pr_info("Actual CLOCK_TICK_RATE is %d Hz\n",
- v / ((__raw_readl(MXC_GPT_GPTPR) & 0xFFF) + 1));
-
- reg = __raw_readl(MXC_GPT_GPTCNT);
- reg += LATCH;
- __raw_writel(reg, MXC_GPT_GPTOCR1);
-
- setup_irq(MXC_INT_GPT, &timer_irq);
-
- reg = __raw_readl(MXC_GPT_GPTCR);
- reg =
- GPTCR_FRR | GPTCR_CLKSRC_HIGHFREQ | GPTCR_STOPEN | GPTCR_DOZEN |
- GPTCR_WAITEN | GPTCR_ENMOD | GPTCR_ENABLE;
- __raw_writel(reg, MXC_GPT_GPTCR);
-
- __raw_writel(GPTIR_OF1IE, MXC_GPT_GPTIR);
-}
-
-struct sys_timer mxc_timer = {
- .init = mxc_init_time,
- .offset = mxc_gettimeoffset,
-};
#
# Common support
-obj-y := irq.o clock.o gpio.o
+obj-y := irq.o clock.o gpio.o time.o
--- /dev/null
+/*
+ * linux/arch/arm/plat-mxc/time.c
+ *
+ * Copyright (C) 2000-2001 Deep Blue Solutions
+ * Copyright (C) 2002 Shane Nay (shane@minirl.com)
+ * Copyright (C) 2006-2007 Pavel Pisa (ppisa@pikron.com)
+ * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/clockchips.h>
+#include <linux/clk.h>
+
+#include <asm/hardware.h>
+#include <asm/mach/time.h>
+#include <asm/arch/common.h>
+#include <asm/arch/mxc_timer.h>
+
+static struct clock_event_device clockevent_mxc;
+static enum clock_event_mode clockevent_mode = CLOCK_EVT_MODE_UNUSED;
+
+/* clock source for the timer */
+static struct clk *timer_clk;
+
+/* clock source */
+
+static cycle_t mxc_get_cycles(void)
+{
+ return __raw_readl(TIMER_BASE + MXC_TCN);
+}
+
+static struct clocksource clocksource_mxc = {
+ .name = "mxc_timer1",
+ .rating = 200,
+ .read = mxc_get_cycles,
+ .mask = CLOCKSOURCE_MASK(32),
+ .shift = 20,
+ .flags = CLOCK_SOURCE_IS_CONTINUOUS,
+};
+
+static int __init mxc_clocksource_init(void)
+{
+ unsigned int clock;
+
+ clock = clk_get_rate(timer_clk);
+
+ clocksource_mxc.mult = clocksource_hz2mult(clock,
+ clocksource_mxc.shift);
+ clocksource_register(&clocksource_mxc);
+
+ return 0;
+}
+
+/* clock event */
+
+static int mxc_set_next_event(unsigned long evt,
+ struct clock_event_device *unused)
+{
+ unsigned long tcmp;
+
+ tcmp = __raw_readl(TIMER_BASE + MXC_TCN) + evt;
+ __raw_writel(tcmp, TIMER_BASE + MXC_TCMP);
+
+ return (int)(tcmp - __raw_readl(TIMER_BASE + MXC_TCN)) < 0 ?
+ -ETIME : 0;
+}
+
+#ifdef DEBUG
+static const char *clock_event_mode_label[] = {
+ [CLOCK_EVT_MODE_PERIODIC] = "CLOCK_EVT_MODE_PERIODIC",
+ [CLOCK_EVT_MODE_ONESHOT] = "CLOCK_EVT_MODE_ONESHOT",
+ [CLOCK_EVT_MODE_SHUTDOWN] = "CLOCK_EVT_MODE_SHUTDOWN",
+ [CLOCK_EVT_MODE_UNUSED] = "CLOCK_EVT_MODE_UNUSED"
+};
+#endif /* DEBUG */
+
+static void mxc_set_mode(enum clock_event_mode mode,
+ struct clock_event_device *evt)
+{
+ unsigned long flags;
+
+ /*
+ * The timer interrupt generation is disabled at least
+ * for enough time to call mxc_set_next_event()
+ */
+ local_irq_save(flags);
+
+ /* Disable interrupt in GPT module */
+ gpt_irq_disable();
+
+ if (mode != clockevent_mode) {
+ /* Set event time into far-far future */
+ __raw_writel(__raw_readl(TIMER_BASE + MXC_TCN) - 3,
+ TIMER_BASE + MXC_TCMP);
+ /* Clear pending interrupt */
+ gpt_irq_acknowledge();
+ }
+
+#ifdef DEBUG
+ printk(KERN_INFO "mxc_set_mode: changing mode from %s to %s\n",
+ clock_event_mode_label[clockevent_mode],
+ clock_event_mode_label[mode]);
+#endif /* DEBUG */
+
+ /* Remember timer mode */
+ clockevent_mode = mode;
+ local_irq_restore(flags);
+
+ switch (mode) {
+ case CLOCK_EVT_MODE_PERIODIC:
+ printk(KERN_ERR"mxc_set_mode: Periodic mode is not "
+ "supported for i.MX\n");
+ break;
+ case CLOCK_EVT_MODE_ONESHOT:
+ /*
+ * Do not put overhead of interrupt enable/disable into
+ * mxc_set_next_event(), the core has about 4 minutes
+ * to call mxc_set_next_event() or shutdown clock after
+ * mode switching
+ */
+ local_irq_save(flags);
+ gpt_irq_enable();
+ local_irq_restore(flags);
+ break;
+ case CLOCK_EVT_MODE_SHUTDOWN:
+ case CLOCK_EVT_MODE_UNUSED:
+ case CLOCK_EVT_MODE_RESUME:
+ /* Left event sources disabled, no more interrupts appear */
+ break;
+ }
+}
+
+/*
+ * IRQ handler for the timer
+ */
+static irqreturn_t mxc_timer_interrupt(int irq, void *dev_id)
+{
+ struct clock_event_device *evt = &clockevent_mxc;
+ uint32_t tstat;
+
+ tstat = __raw_readl(TIMER_BASE + MXC_TSTAT);
+
+ gpt_irq_acknowledge();
+
+ evt->event_handler(evt);
+
+ return IRQ_HANDLED;
+}
+
+static struct irqaction mxc_timer_irq = {
+ .name = "i.MX Timer Tick",
+ .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
+ .handler = mxc_timer_interrupt,
+};
+
+static struct clock_event_device clockevent_mxc = {
+ .name = "mxc_timer1",
+ .features = CLOCK_EVT_FEAT_ONESHOT,
+ .shift = 32,
+ .set_mode = mxc_set_mode,
+ .set_next_event = mxc_set_next_event,
+ .rating = 200,
+};
+
+static int __init mxc_clockevent_init(void)
+{
+ unsigned int clock;
+
+ clock = clk_get_rate(timer_clk);
+
+ clockevent_mxc.mult = div_sc(clock, NSEC_PER_SEC,
+ clockevent_mxc.shift);
+ clockevent_mxc.max_delta_ns =
+ clockevent_delta2ns(0xfffffffe, &clockevent_mxc);
+ clockevent_mxc.min_delta_ns =
+ clockevent_delta2ns(0xff, &clockevent_mxc);
+
+ clockevent_mxc.cpumask = cpumask_of_cpu(0);
+
+ clockevents_register_device(&clockevent_mxc);
+
+ return 0;
+}
+
+void __init mxc_timer_init(const char *clk_timer)
+{
+ timer_clk = clk_get(NULL, clk_timer);
+ if (!timer_clk) {
+ printk(KERN_ERR"Cannot determine timer clock. Giving up.\n");
+ return;
+ }
+
+ clk_enable(timer_clk);
+
+ /*
+ * Initialise to a known state (all timers off, and timing reset)
+ */
+ __raw_writel(0, TIMER_BASE + MXC_TCTL);
+ __raw_writel(0, TIMER_BASE + MXC_TPRER); /* see datasheet note */
+
+ __raw_writel(TCTL_FRR | /* free running */
+ TCTL_VAL | /* set clocksource and arch specific bits */
+ TCTL_TEN, /* start the timer */
+ TIMER_BASE + MXC_TCTL);
+
+ /* init and register the timer to the framework */
+ mxc_clocksource_init();
+ mxc_clockevent_init();
+
+ /* Make irqs happen */
+ setup_irq(TIMER_INTERRUPT, &mxc_timer_irq);
+}
+
#ifndef __ASM_ARCH_MXC_COMMON_H__
#define __ASM_ARCH_MXC_COMMON_H__
-struct sys_timer;
-
extern void mxc_map_io(void);
extern void mxc_init_irq(void);
-extern struct sys_timer mxc_timer;
+extern void mxc_timer_init(const char *clk_timer);
extern int mxc_clocks_init(unsigned long fref);
extern int mxc_register_gpios(void);
/*
* Copyright 2004-2007 Freescale Semiconductor, Inc. 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.
+ * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
*/
#ifndef __ASM_ARCH_MXC_H__
# define cpu_is_mx31() (0)
#endif
-/*
- *****************************************
- * GPT Register definitions *
- *****************************************
- */
-#define MXC_GPT_GPTCR IO_ADDRESS(GPT1_BASE_ADDR + 0x00)
-#define MXC_GPT_GPTPR IO_ADDRESS(GPT1_BASE_ADDR + 0x04)
-#define MXC_GPT_GPTSR IO_ADDRESS(GPT1_BASE_ADDR + 0x08)
-#define MXC_GPT_GPTIR IO_ADDRESS(GPT1_BASE_ADDR + 0x0C)
-#define MXC_GPT_GPTOCR1 IO_ADDRESS(GPT1_BASE_ADDR + 0x10)
-#define MXC_GPT_GPTOCR2 IO_ADDRESS(GPT1_BASE_ADDR + 0x14)
-#define MXC_GPT_GPTOCR3 IO_ADDRESS(GPT1_BASE_ADDR + 0x18)
-#define MXC_GPT_GPTICR1 IO_ADDRESS(GPT1_BASE_ADDR + 0x1C)
-#define MXC_GPT_GPTICR2 IO_ADDRESS(GPT1_BASE_ADDR + 0x20)
-#define MXC_GPT_GPTCNT IO_ADDRESS(GPT1_BASE_ADDR + 0x24)
-
-/* GPT Control register bit definitions */
-#define GPTCR_FO3 (1 << 31)
-#define GPTCR_FO2 (1 << 30)
-#define GPTCR_FO1 (1 << 29)
-
-#define GPTCR_OM3_SHIFT 26
-#define GPTCR_OM3_MASK (7 << GPTCR_OM3_SHIFT)
-#define GPTCR_OM3_DISCONNECTED (0 << GPTCR_OM3_SHIFT)
-#define GPTCR_OM3_TOGGLE (1 << GPTCR_OM3_SHIFT)
-#define GPTCR_OM3_CLEAR (2 << GPTCR_OM3_SHIFT)
-#define GPTCR_OM3_SET (3 << GPTCR_OM3_SHIFT)
-#define GPTCR_OM3_GENERATE_LOW (7 << GPTCR_OM3_SHIFT)
-
-#define GPTCR_OM2_SHIFT 23
-#define GPTCR_OM2_MASK (7 << GPTCR_OM2_SHIFT)
-#define GPTCR_OM2_DISCONNECTED (0 << GPTCR_OM2_SHIFT)
-#define GPTCR_OM2_TOGGLE (1 << GPTCR_OM2_SHIFT)
-#define GPTCR_OM2_CLEAR (2 << GPTCR_OM2_SHIFT)
-#define GPTCR_OM2_SET (3 << GPTCR_OM2_SHIFT)
-#define GPTCR_OM2_GENERATE_LOW (7 << GPTCR_OM2_SHIFT)
-
-#define GPTCR_OM1_SHIFT 20
-#define GPTCR_OM1_MASK (7 << GPTCR_OM1_SHIFT)
-#define GPTCR_OM1_DISCONNECTED (0 << GPTCR_OM1_SHIFT)
-#define GPTCR_OM1_TOGGLE (1 << GPTCR_OM1_SHIFT)
-#define GPTCR_OM1_CLEAR (2 << GPTCR_OM1_SHIFT)
-#define GPTCR_OM1_SET (3 << GPTCR_OM1_SHIFT)
-#define GPTCR_OM1_GENERATE_LOW (7 << GPTCR_OM1_SHIFT)
-
-#define GPTCR_IM2_SHIFT 18
-#define GPTCR_IM2_MASK (3 << GPTCR_IM2_SHIFT)
-#define GPTCR_IM2_CAPTURE_DISABLE (0 << GPTCR_IM2_SHIFT)
-#define GPTCR_IM2_CAPTURE_RISING (1 << GPTCR_IM2_SHIFT)
-#define GPTCR_IM2_CAPTURE_FALLING (2 << GPTCR_IM2_SHIFT)
-#define GPTCR_IM2_CAPTURE_BOTH (3 << GPTCR_IM2_SHIFT)
-
-#define GPTCR_IM1_SHIFT 16
-#define GPTCR_IM1_MASK (3 << GPTCR_IM1_SHIFT)
-#define GPTCR_IM1_CAPTURE_DISABLE (0 << GPTCR_IM1_SHIFT)
-#define GPTCR_IM1_CAPTURE_RISING (1 << GPTCR_IM1_SHIFT)
-#define GPTCR_IM1_CAPTURE_FALLING (2 << GPTCR_IM1_SHIFT)
-#define GPTCR_IM1_CAPTURE_BOTH (3 << GPTCR_IM1_SHIFT)
-
-#define GPTCR_SWR (1 << 15)
-#define GPTCR_FRR (1 << 9)
-
-#define GPTCR_CLKSRC_SHIFT 6
-#define GPTCR_CLKSRC_MASK (7 << GPTCR_CLKSRC_SHIFT)
-#define GPTCR_CLKSRC_NOCLOCK (0 << GPTCR_CLKSRC_SHIFT)
-#define GPTCR_CLKSRC_HIGHFREQ (2 << GPTCR_CLKSRC_SHIFT)
-#define GPTCR_CLKSRC_CLKIN (3 << GPTCR_CLKSRC_SHIFT)
-#define GPTCR_CLKSRC_CLK32K (7 << GPTCR_CLKSRC_SHIFT)
-
-#define GPTCR_STOPEN (1 << 5)
-#define GPTCR_DOZEN (1 << 4)
-#define GPTCR_WAITEN (1 << 3)
-#define GPTCR_DBGEN (1 << 2)
-
-#define GPTCR_ENMOD (1 << 1)
-#define GPTCR_ENABLE (1 << 0)
-
-#define GPTSR_OF1 (1 << 0)
-#define GPTSR_OF2 (1 << 1)
-#define GPTSR_OF3 (1 << 2)
-#define GPTSR_IF1 (1 << 3)
-#define GPTSR_IF2 (1 << 4)
-#define GPTSR_ROV (1 << 5)
-
-#define GPTIR_OF1IE GPTSR_OF1
-#define GPTIR_OF2IE GPTSR_OF2
-#define GPTIR_OF3IE GPTSR_OF3
-#define GPTIR_IF1IE GPTSR_IF1
-#define GPTIR_IF2IE GPTSR_IF2
-#define GPTIR_ROVIE GPTSR_ROV
-
/*
*****************************************
* AVIC Registers *
--- /dev/null
+/*
+ * mxc_timer.h
+ *
+ * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
+ *
+ * Platform independent (i.MX1, i.MX2, i.MX3) definition for timer handling.
+ *
+ * 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., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __PLAT_MXC_TIMER_H
+#define __PLAT_MXC_TIMER_H
+
+#include <linux/clk.h>
+#include <asm/hardware.h>
+
+#ifdef CONFIG_ARCH_IMX
+#define TIMER_BASE IO_ADDRESS(TIM1_BASE_ADDR)
+#define TIMER_INTERRUPT TIM1_INT
+
+#define TCTL_VAL TCTL_CLK_PCLK1
+#define TCTL_IRQEN (1<<4)
+#define TCTL_FRR (1<<8)
+#define TCTL_CLK_PCLK1 (1<<1)
+#define TCTL_CLK_PCLK1_4 (2<<1)
+#define TCTL_CLK_TIN (3<<1)
+#define TCTL_CLK_32 (4<<1)
+
+#define MXC_TCTL 0x00
+#define MXC_TPRER 0x04
+#define MXC_TCMP 0x08
+#define MXC_TCR 0x0c
+#define MXC_TCN 0x10
+#define MXC_TSTAT 0x14
+#define TSTAT_CAPT (1<<1)
+#define TSTAT_COMP (1<<0)
+
+static inline void gpt_irq_disable(void)
+{
+ unsigned int tmp;
+
+ tmp = __raw_readl(TIMER_BASE + MXC_TCTL);
+ __raw_writel(tmp & ~TCTL_IRQEN, TIMER_BASE + MXC_TCTL);
+}
+
+static inline void gpt_irq_enable(void)
+{
+ __raw_writel(__raw_readl(TIMER_BASE + MXC_TCTL) | TCTL_IRQEN,
+ TIMER_BASE + MXC_TCTL);
+}
+
+static void gpt_irq_acknowledge(void)
+{
+ __raw_writel(0, TIMER_BASE + MXC_TSTAT);
+}
+#endif /* CONFIG_ARCH_IMX */
+
+#ifdef CONFIG_ARCH_MX2
+#define TIMER_BASE IO_ADDRESS(GPT1_BASE_ADDR)
+#define TIMER_INTERRUPT MXC_INT_GPT1
+
+#define MXC_TCTL 0x00
+#define TCTL_VAL TCTL_CLK_PCLK1
+#define TCTL_CLK_PCLK1 (1<<1)
+#define TCTL_CLK_PCLK1_4 (2<<1)
+#define TCTL_IRQEN (1<<4)
+#define TCTL_FRR (1<<8)
+#define MXC_TPRER 0x04
+#define MXC_TCMP 0x08
+#define MXC_TCR 0x0c
+#define MXC_TCN 0x10
+#define MXC_TSTAT 0x14
+#define TSTAT_CAPT (1<<1)
+#define TSTAT_COMP (1<<0)
+
+static inline void gpt_irq_disable(void)
+{
+ unsigned int tmp;
+
+ tmp = __raw_readl(TIMER_BASE + MXC_TCTL);
+ __raw_writel(tmp & ~TCTL_IRQEN, TIMER_BASE + MXC_TCTL);
+}
+
+static inline void gpt_irq_enable(void)
+{
+ __raw_writel(__raw_readl(TIMER_BASE + MXC_TCTL) | TCTL_IRQEN,
+ TIMER_BASE + MXC_TCTL);
+}
+
+static void gpt_irq_acknowledge(void)
+{
+ __raw_writel(TSTAT_CAPT | TSTAT_COMP, TIMER_BASE + MXC_TSTAT);
+}
+#endif /* CONFIG_ARCH_MX2 */
+
+#ifdef CONFIG_ARCH_MX3
+#define TIMER_BASE IO_ADDRESS(GPT1_BASE_ADDR)
+#define TIMER_INTERRUPT MXC_INT_GPT
+
+#define MXC_TCTL 0x00
+#define TCTL_VAL (TCTL_CLK_IPG | TCTL_WAITEN)
+#define TCTL_CLK_IPG (1<<6)
+#define TCTL_FRR (1<<9)
+#define TCTL_WAITEN (1<<3)
+
+#define MXC_TPRER 0x04
+#define MXC_TSTAT 0x08
+#define TSTAT_OF1 (1<<0)
+#define TSTAT_OF2 (1<<1)
+#define TSTAT_OF3 (1<<2)
+#define TSTAT_IF1 (1<<3)
+#define TSTAT_IF2 (1<<4)
+#define TSTAT_ROV (1<<5)
+#define MXC_IR 0x0c
+#define MXC_TCMP 0x10
+#define MXC_TCMP2 0x14
+#define MXC_TCMP3 0x18
+#define MXC_TCR 0x1c
+#define MXC_TCN 0x24
+
+static inline void gpt_irq_disable(void)
+{
+ __raw_writel(0, TIMER_BASE + MXC_IR);
+}
+
+static inline void gpt_irq_enable(void)
+{
+ __raw_writel(1<<0, TIMER_BASE + MXC_IR);
+}
+
+static inline void gpt_irq_acknowledge(void)
+{
+ __raw_writel(TSTAT_OF1, TIMER_BASE + MXC_TSTAT);
+}
+#endif /* CONFIG_ARCH_MX3 */
+
+#define TCTL_SWR (1<<15)
+#define TCTL_CC (1<<10)
+#define TCTL_OM (1<<9)
+#define TCTL_CAP_RIS (1<<6)
+#define TCTL_CAP_FAL (2<<6)
+#define TCTL_CAP_RIS_FAL (3<<6)
+#define TCTL_CAP_ENA (1<<5)
+#define TCTL_TEN (1<<0)
+
+#endif
projects / linux-2.6-omap-h63xx.git / commitdiff