linux-imx

/*

 * Copyright (C) 2010 NXP Semiconductors

 *

 * 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.

 *

 *  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/module.h>

#include <linux/init.h>

#include <linux/platform_device.h>

#include <linux/spinlock.h>

#include <linux/rtc.h>

#include <linux/slab.h>

#include <linux/io.h>

#include <linux/of.h>

​

/*

 * Clock and Power control register offsets

 */

#define LPC32XX_RTC_UCOUNT      0x00

#define LPC32XX_RTC_DCOUNT      0x04

#define LPC32XX_RTC_MATCH0      0x08

#define LPC32XX_RTC_MATCH1      0x0C

#define LPC32XX_RTC_CTRL        0x10

#define LPC32XX_RTC_INTSTAT     0x14

#define LPC32XX_RTC_KEY         0x18

#define LPC32XX_RTC_SRAM        0x80

​

#define LPC32XX_RTC_CTRL_MATCH0     (1 << 0)

#define LPC32XX_RTC_CTRL_MATCH1     (1 << 1)

#define LPC32XX_RTC_CTRL_ONSW_MATCH0    (1 << 2)

#define LPC32XX_RTC_CTRL_ONSW_MATCH1    (1 << 3)

#define LPC32XX_RTC_CTRL_SW_RESET   (1 << 4)

#define LPC32XX_RTC_CTRL_CNTR_DIS   (1 << 6)

#define LPC32XX_RTC_CTRL_ONSW_FORCE_HI  (1 << 7)

​

#define LPC32XX_RTC_INTSTAT_MATCH0  (1 << 0)

#define LPC32XX_RTC_INTSTAT_MATCH1  (1 << 1)

#define LPC32XX_RTC_INTSTAT_ONSW    (1 << 2)

​

#define LPC32XX_RTC_KEY_ONSW_LOADVAL    0xB5C13F27

​

#define RTC_NAME "rtc-lpc32xx"

​

#define rtc_readl(dev, reg) \

    __raw_readl((dev)->rtc_base + (reg))

#define rtc_writel(dev, reg, val) \

    __raw_writel((val), (dev)->rtc_base + (reg))

​

struct lpc32xx_rtc {

    void __iomem *rtc_base;

    int irq;

    unsigned char alarm_enabled;

    struct rtc_device *rtc;

    spinlock_t lock;

};