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mxc_timer.h

/*
 * 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 <mach/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

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