From 7e7649baa9de9d592a76e150970e3079d7610138 Mon Sep 17 00:00:00 2001 From: kaloz Date: Tue, 1 May 2012 07:00:17 +0000 Subject: [coldfire]: switch to 2.6.38 git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31546 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../026-Add-RTC-driver-support-for-MCF5445x.patch | 627 +++++++++++++++++++++ 1 file changed, 627 insertions(+) create mode 100644 target/linux/coldfire/patches/026-Add-RTC-driver-support-for-MCF5445x.patch (limited to 'target/linux/coldfire/patches/026-Add-RTC-driver-support-for-MCF5445x.patch') diff --git a/target/linux/coldfire/patches/026-Add-RTC-driver-support-for-MCF5445x.patch b/target/linux/coldfire/patches/026-Add-RTC-driver-support-for-MCF5445x.patch new file mode 100644 index 0000000000..25b9794ba0 --- /dev/null +++ b/target/linux/coldfire/patches/026-Add-RTC-driver-support-for-MCF5445x.patch @@ -0,0 +1,627 @@ +From 40563ab5aa698191dbd8a05fe6053aa790eee2a1 Mon Sep 17 00:00:00 2001 +From: Alison Wang +Date: Thu, 4 Aug 2011 09:59:46 +0800 +Subject: [PATCH 26/52] Add RTC driver support for MCF5445x + +On-chip RTC module support for MCF54451 and MCF54455. +Using internal 32K clock to drive the rtc module. + +Signed-off-by: Alison Wang +--- + drivers/rtc/Kconfig | 9 + + drivers/rtc/Makefile | 1 + + drivers/rtc/rtc-mcf.c | 583 +++++++++++++++++++++++++++++++++++++++++++++++++ + 3 files changed, 593 insertions(+), 0 deletions(-) + create mode 100644 drivers/rtc/rtc-mcf.c + +--- a/drivers/rtc/Kconfig ++++ b/drivers/rtc/Kconfig +@@ -919,6 +919,15 @@ config RTC_DRV_MV + This driver can also be built as a module. If so, the module + will be called rtc-mv. + ++config RTC_MCF ++ tristate "Freescale Coldfire Real Time Clock" ++ depends on COLDFIRE ++ help ++ If you say yes here you will get support for the on-chip Coldfire ++ Real-Time Clock. ++ ++ If you build it as a module it will be call mcf-rtc. ++ + config RTC_DRV_PS3 + tristate "PS3 RTC" + depends on PPC_PS3 +--- a/drivers/rtc/Makefile ++++ b/drivers/rtc/Makefile +@@ -102,3 +102,4 @@ obj-$(CONFIG_RTC_DRV_VR41XX) += rtc-vr41 + obj-$(CONFIG_RTC_DRV_WM831X) += rtc-wm831x.o + obj-$(CONFIG_RTC_DRV_WM8350) += rtc-wm8350.o + obj-$(CONFIG_RTC_DRV_X1205) += rtc-x1205.o ++obj-$(CONFIG_RTC_MCF) += rtc-mcf.o +--- /dev/null ++++ b/drivers/rtc/rtc-mcf.c +@@ -0,0 +1,583 @@ ++/* ++ * Copyright (C) 2004-2011 Freescale Semiconductor, Inc. All Rights Reserved. ++ * ++ * Implementation based on rtc-mxc.c ++ * This file contains Real Time Clock interface for Linux. ++ * ++ * This 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. ++ */ ++ ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++ ++#ifdef readl ++#undef readl ++#endif ++ ++#ifdef writel ++#undef writel ++#endif ++ ++#define readl(addr) in_be32(addr) ++#define writel(val, addr) out_be32((addr), (val)) ++ ++#define RTC_INPUT_CLK_32768HZ 0x8000 ++#define RTC_INPUT_CLK_32000HZ 0x7D00 ++#define RTC_INPUT_CLK_38400HZ 0x9600 ++#define RTC_INPUT_CLK_48000HZ 0xBB80 ++ ++#define PIT_ALL_ON (MCF_RTC_ISR_2HZ | MCF_RTC_ISR_SAM0 | MCF_RTC_ISR_SAM1 | \ ++ MCF_RTC_ISR_SAM2 | MCF_RTC_ISR_SAM3 | MCF_RTC_ISR_SAM4 | \ ++ MCF_RTC_ISR_SAM5 | MCF_RTC_ISR_SAM6 | MCF_RTC_ISR_SAM7) ++ ++#define MAX_PIE_NUM 9 ++#define MAX_PIE_FREQ 512 ++const u32 PIE_BIT_DEF[MAX_PIE_NUM][2] = { ++ {2, MCF_RTC_ISR_2HZ}, ++ {4, MCF_RTC_ISR_SAM0}, ++ {8, MCF_RTC_ISR_SAM1}, ++ {16, MCF_RTC_ISR_SAM2}, ++ {32, MCF_RTC_ISR_SAM3}, ++ {64, MCF_RTC_ISR_SAM4}, ++ {128, MCF_RTC_ISR_SAM5}, ++ {256, MCF_RTC_ISR_SAM6}, ++ {MAX_PIE_FREQ, MCF_RTC_ISR_SAM7}, ++}; ++ ++/* Those are the bits from a classic RTC we want to mimic */ ++#define RTC_IRQF 0x80 /* any of the following 3 is active */ ++#define RTC_PF 0x40 /* Periodic interrupt */ ++#define RTC_AF 0x20 /* Alarm interrupt */ ++#define RTC_UF 0x10 /* Update interrupt for 1Hz RTC */ ++ ++#define MCF_RTC_TIME 0 ++#define MCF_RTC_ALARM 1 ++ ++struct rtc_plat_data { ++ struct rtc_device *rtc; ++ int irq; ++ unsigned int irqen; ++ int alrm_sec; ++ int alrm_min; ++ int alrm_hour; ++ int alrm_mday; ++}; ++ ++/*! ++ * @defgroup RTC Real Time Clock (RTC) Driver ++ */ ++/*! ++ * @file rtc-mcf.c ++ * @brief Real Time Clock interface ++ * ++ * This file contains Real Time Clock interface for Linux. ++ * ++ * @ingroup RTC ++ */ ++ ++#define RTC_VERSION "0.1" ++ ++static u32 rtc_freq = 2; /* minimun value for PIE */ ++static unsigned long rtc_status; ++ ++static struct rtc_time g_rtc_alarm = { ++ .tm_year = 0, ++ .tm_mon = 0, ++ .tm_mday = 0, ++ .tm_hour = 0, ++ .tm_mon = 0, ++ .tm_sec = 0, ++}; ++ ++static DEFINE_SPINLOCK(rtc_lock); ++ ++/*! ++ * This function is used to obtain the RTC time or the alarm value in ++ * second. ++ * ++ * @param time_alarm use MCF_RTC_TIME for RTC time value; ++ * MCF_RTC_ALARM for alarm value ++ * ++ * @return The RTC time or alarm time in second. ++ */ ++static u32 get_alarm_or_time(struct device *dev, int time_alarm) ++{ ++ u32 day, hr, min, sec, hr_min; ++ ++ if (time_alarm == MCF_RTC_TIME) { ++ day = MCF_RTC_DAYS_DAYS(readl(MCF_RTC_DAYS)); ++ hr_min = readl(MCF_RTC_HOURMIN); ++ sec = MCF_RTC_SECONDS_SECONDS(readl(MCF_RTC_SECONDS)); ++ } else if (time_alarm == MCF_RTC_ALARM) { ++ day = MCF_RTC_ALRM_DAY_DAYS(readl(MCF_RTC_ALRM_DAY)); ++ hr_min = readl(MCF_RTC_ALRM_HM); ++ sec = MCF_RTC_ALRM_SEC_SECONDS(readl(MCF_RTC_ALRM_SEC)); ++ } else { ++ panic("wrong value for time_alarm=%d\n", time_alarm); ++ } ++ ++ hr = (hr_min >> 8) & 0x001F; ++ min = hr_min & 0x003F; ++ ++ return (((day * 24 + hr) * 60) + min) * 60 + sec; ++} ++ ++/*! ++ * This function sets the RTC alarm value or the time value. ++ * ++ * @param time_alarm the new alarm value to be updated in the RTC ++ * @param time use MCF_RTC_TIME for RTC time value; ++ * MCF_RTC_ALARM for alarm value ++ */ ++static void set_alarm_or_time(struct device *dev, int time_alarm, u32 time) ++{ ++ u32 day, hr, min, sec, temp; ++ ++ day = time / 86400; ++ time -= day * 86400; ++ /* time is within a day now */ ++ hr = time / 3600; ++ time -= hr * 3600; ++ /* time is within an hour now */ ++ min = time / 60; ++ sec = time - min * 60; ++ ++ temp = (hr << 8) + min; ++ ++ if (time_alarm == MCF_RTC_TIME) { ++ writel(day, MCF_RTC_DAYS); ++ writel(sec, MCF_RTC_SECONDS); ++ writel(temp, MCF_RTC_HOURMIN); ++ } else if (time_alarm == MCF_RTC_ALARM) { ++ writel(day, MCF_RTC_ALRM_DAY); ++ writel(sec, MCF_RTC_ALRM_SEC); ++ writel(temp, MCF_RTC_ALRM_HM); ++ } else { ++ panic("wrong value for time_alarm=%d\n", time_alarm); ++ } ++} ++ ++/*! ++ * This function updates the RTC alarm registers and then clears all the ++ * interrupt status bits. ++ * ++ * @param alrm the new alarm value to be updated in the RTC ++ * ++ * @return 0 if successful; non-zero otherwise. ++ */ ++static int rtc_update_alarm(struct device *dev, struct rtc_time *alrm) ++{ ++ struct rtc_time alarm_tm, now_tm; ++ unsigned long now, time; ++ int ret; ++ ++ now = get_alarm_or_time(dev, MCF_RTC_TIME); ++ rtc_time_to_tm(now, &now_tm); ++ alarm_tm.tm_year = now_tm.tm_year; ++ alarm_tm.tm_mon = now_tm.tm_mon; ++ alarm_tm.tm_mday = now_tm.tm_mday; ++ alarm_tm.tm_hour = alrm->tm_hour; ++ alarm_tm.tm_min = alrm->tm_min; ++ alarm_tm.tm_sec = alrm->tm_sec; ++ rtc_tm_to_time(&now_tm, &now); ++ rtc_tm_to_time(&alarm_tm, &time); ++ if (time < now) { ++ time += 60 * 60 * 24; ++ rtc_time_to_tm(time, &alarm_tm); ++ } ++ ret = rtc_tm_to_time(&alarm_tm, &time); ++ ++ /* clear all the interrupt status bits */ ++ writel(readl(MCF_RTC_ISR), MCF_RTC_ISR); ++ ++ set_alarm_or_time(dev, MCF_RTC_ALARM, time); ++ ++ return ret; ++} ++ ++/*! ++ * This function is the RTC interrupt service routine. ++ * ++ * @param irq RTC IRQ number ++ * @param dev_id device ID which is not used ++ * ++ * @return IRQ_HANDLED as defined in the include/linux/interrupt.h file. ++ */ ++static irqreturn_t mcf_rtc_interrupt(int irq, void *dev_id) ++{ ++ struct platform_device *pdev = dev_id; ++ struct rtc_plat_data *pdata = platform_get_drvdata(pdev); ++ u32 status, events = 0; ++ ++ spin_lock(&rtc_lock); ++ ++ /* clear interrupt sources */ ++ status = readl(MCF_RTC_ISR) & readl(MCF_RTC_IER); ++ writel(status, MCF_RTC_ISR); ++ ++ /* clear alarm interrupt if it has occurred */ ++ if (status & MCF_RTC_ISR_ALM) ++ status &= ~MCF_RTC_ISR_ALM; ++ ++ /* update irq data & counter */ ++ if (status & MCF_RTC_ISR_ALM) ++ events |= (RTC_AF | RTC_IRQF); ++ if (status & MCF_RTC_ISR_1HZ) ++ events |= (RTC_UF | RTC_IRQF); ++ if (status & PIT_ALL_ON) ++ events |= (RTC_PF | RTC_IRQF); ++ ++ if ((status & MCF_RTC_ISR_ALM) && rtc_valid_tm(&g_rtc_alarm)) ++ rtc_update_alarm(&pdev->dev, &g_rtc_alarm); ++ ++ spin_unlock(&rtc_lock); ++ rtc_update_irq(pdata->rtc, 1, events); ++ return IRQ_HANDLED; ++} ++ ++/*! ++ * clear all interrupts and release the IRQ ++ */ ++static void mcf_rtc_release(struct device *dev) ++{ ++ spin_lock_irq(&rtc_lock); ++ writel(0, MCF_RTC_IER); /* Disable all rtc interrupts */ ++ writel(0x0000FFBF, MCF_RTC_ISR); /* Clear all interrupt status */ ++ spin_unlock_irq(&rtc_lock); ++ rtc_status = 0; ++} ++ ++/*! ++ * This function is used to support some ioctl calls directly. ++ * Other ioctl calls are supported indirectly through the ++ * arm/common/rtctime.c file. ++ * ++ * @param cmd ioctl command as defined in include/linux/rtc.h ++ * @param arg value for the ioctl command ++ * ++ * @return 0 if successful or negative value otherwise. ++ */ ++static int mcf_rtc_ioctl(struct device *dev, unsigned int cmd, ++ unsigned long arg) ++{ ++ int i; ++ ++ switch (cmd) { ++ case RTC_PIE_OFF: ++ writel((readl(MCF_RTC_IER) & ~PIT_ALL_ON), MCF_RTC_IER); ++ return 0; ++ case RTC_IRQP_SET: ++ if (arg < 2 || arg > MAX_PIE_FREQ || (arg % 2) != 0) ++ return -EINVAL; /* Also make sure a power of 2Hz */ ++ if ((arg > 64) && (!capable(CAP_SYS_RESOURCE))) ++ return -EACCES; ++ rtc_freq = arg; ++ return 0; ++ case RTC_IRQP_READ: ++ return put_user(rtc_freq, (u32 *) arg); ++ case RTC_PIE_ON: ++ for (i = 0; i < MAX_PIE_NUM; i++) { ++ if (PIE_BIT_DEF[i][0] == rtc_freq) ++ break; ++ } ++ if (i == MAX_PIE_NUM) ++ return -EACCES; ++ spin_lock_irq(&rtc_lock); ++ writel((readl(MCF_RTC_IER) | PIE_BIT_DEF[i][1]), MCF_RTC_IER); ++ spin_unlock_irq(&rtc_lock); ++ return 0; ++ case RTC_AIE_OFF: ++ spin_lock_irq(&rtc_lock); ++ writel((readl(MCF_RTC_IER) & ~MCF_RTC_ISR_ALM), MCF_RTC_IER); ++ spin_unlock_irq(&rtc_lock); ++ return 0; ++ ++ case RTC_AIE_ON: ++ spin_lock_irq(&rtc_lock); ++ writel((readl(MCF_RTC_IER) | MCF_RTC_ISR_ALM), MCF_RTC_IER); ++ spin_unlock_irq(&rtc_lock); ++ return 0; ++ ++ case RTC_UIE_OFF: /* UIE is for the 1Hz interrupt */ ++ spin_lock_irq(&rtc_lock); ++ writel((readl(MCF_RTC_IER) & ~MCF_RTC_ISR_1HZ), MCF_RTC_IER); ++ spin_unlock_irq(&rtc_lock); ++ return 0; ++ ++ case RTC_UIE_ON: ++ spin_lock_irq(&rtc_lock); ++ writel((readl(MCF_RTC_IER) | MCF_RTC_ISR_1HZ), MCF_RTC_IER); ++ spin_unlock_irq(&rtc_lock); ++ return 0; ++ } ++ return -ENOIOCTLCMD; ++} ++ ++/*! ++ * This function reads the current RTC time into tm in Gregorian date. ++ * ++ * @param tm contains the RTC time value upon return ++ * ++ * @return 0 if successful; non-zero otherwise. ++ */ ++static int mcf_rtc_read_time(struct device *dev, struct rtc_time *tm) ++{ ++ u32 val; ++ ++ /* Avoid roll-over from reading the different registers */ ++ do { ++ val = get_alarm_or_time(dev, MCF_RTC_TIME); ++ } while (val != get_alarm_or_time(dev, MCF_RTC_TIME)); ++ ++ rtc_time_to_tm(val, tm); ++ return 0; ++} ++ ++/*! ++ * This function sets the internal RTC time based on tm in Gregorian date. ++ * ++ * @param tm the time value to be set in the RTC ++ * ++ * @return 0 if successful; non-zero otherwise. ++ */ ++static int mcf_rtc_set_time(struct device *dev, struct rtc_time *tm) ++{ ++ unsigned long time; ++ int ret; ++ ++ ret = rtc_tm_to_time(tm, &time); ++ if (ret != 0) ++ return ret; ++ ++ /* Avoid roll-over from reading the different registers */ ++ do { ++ set_alarm_or_time(dev, MCF_RTC_TIME, time); ++ } while (time != get_alarm_or_time(dev, MCF_RTC_TIME)); ++ ++ return ret; ++} ++ ++/*! ++ * This function reads the current alarm value into the passed in \b alrm ++ * argument. It updates the \b alrm's pending field value based on the whether ++ * an alarm interrupt occurs or not. ++ * ++ * @param alrm contains the RTC alarm value upon return ++ * ++ * @return 0 if successful; non-zero otherwise. ++ */ ++static int mcf_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) ++{ ++ rtc_time_to_tm(get_alarm_or_time(dev, MCF_RTC_ALARM), &alrm->time); ++ alrm->pending = ((readl(MCF_RTC_ISR) & MCF_RTC_ISR_ALM) != 0) ? 1 : 0; ++ ++ return 0; ++} ++ ++/*! ++ * This function sets the RTC alarm based on passed in alrm. ++ * ++ * @param alrm the alarm value to be set in the RTC ++ * ++ * @return 0 if successful; non-zero otherwise. ++ */ ++static int mcf_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) ++{ ++ int ret; ++ ++ spin_lock_irq(&rtc_lock); ++ if (rtc_valid_tm(&alrm->time)) { ++ if (alrm->time.tm_sec > 59 || ++ alrm->time.tm_hour > 23 || alrm->time.tm_min > 59) { ++ ret = -EINVAL; ++ goto out; ++ } ++ ret = rtc_update_alarm(dev, &alrm->time); ++ } else { ++ ret = rtc_valid_tm(&alrm->time); ++ if (ret) ++ goto out; ++ ret = rtc_update_alarm(dev, &alrm->time); ++ } ++ ++ if (ret == 0) { ++ memcpy(&g_rtc_alarm, &alrm->time, sizeof(struct rtc_time)); ++ ++ if (alrm->enabled) { ++ writel((readl(MCF_RTC_IER) | MCF_RTC_ISR_ALM), ++ MCF_RTC_IER); ++ } else { ++ writel((readl(MCF_RTC_IER) & ~MCF_RTC_ISR_ALM), ++ MCF_RTC_IER); ++ } ++ } ++out: ++ spin_unlock_irq(&rtc_lock); ++ ++ return ret; ++} ++ ++/*! ++ * This function is used to provide the content for the /proc/driver/rtc ++ * file. ++ * ++ * @param buf the buffer to hold the information that the driver ++ * wants to write ++ * ++ * @return The number of bytes written into the rtc file. ++ */ ++static int mcf_rtc_proc(struct device *dev, struct seq_file *sq) ++{ ++ char *p = sq->buf; ++ ++ p += sprintf(p, "alarm_IRQ\t: %s\n", ++ (((readl(MCF_RTC_IER)) & MCF_RTC_ISR_ALM) != ++ 0) ? "yes" : "no"); ++ p += sprintf(p, "update_IRQ\t: %s\n", ++ (((readl(MCF_RTC_IER)) & MCF_RTC_ISR_1HZ) != ++ 0) ? "yes" : "no"); ++ p += sprintf(p, "periodic_IRQ\t: %s\n", ++ (((readl(MCF_RTC_IER)) & PIT_ALL_ON) != ++ 0) ? "yes" : "no"); ++ p += sprintf(p, "periodic_freq\t: %d\n", rtc_freq); ++ ++ return p - (sq->buf); ++} ++ ++/*! ++ * The RTC driver structure ++ */ ++static struct rtc_class_ops mcf_rtc_ops = { ++ .ioctl = mcf_rtc_ioctl, ++ .read_time = mcf_rtc_read_time, ++ .set_time = mcf_rtc_set_time, ++ .read_alarm = mcf_rtc_read_alarm, ++ .set_alarm = mcf_rtc_set_alarm, ++ .proc = mcf_rtc_proc, ++}; ++ ++static int __devinit mcf_rtc_probe(struct platform_device *pdev) ++{ ++ struct timespec tv; ++ struct rtc_device *rtc; ++ struct rtc_plat_data *pdata = NULL; ++ u32 ret = 0; ++ ++ pdata = kzalloc(sizeof(*pdata), GFP_KERNEL); ++ if (!pdata) ++ return -ENOMEM; ++ /* External clock is hard wired to 32768Hz. ++ * Clock settings 32K, 38.4K and 48K are defined above. */ ++#if defined(CONFIG_M5227x) | defined(CONFIG_M5445X) ++ writel(0, MCF_RTC_GOCU); ++ writel(RTC_INPUT_CLK_32768HZ, MCF_RTC_GOCL); ++#endif ++ /* Configure and enable the RTC */ ++ pdata->irq = MCFINT_VECBASE + MCFINT_RTC; ++ if (request_irq(pdata->irq, mcf_rtc_interrupt, IRQF_DISABLED, ++ pdev->name, pdev) < 0) { ++ dev_warn(&pdev->dev, "interrupt not available.\n"); ++ pdata->irq = -1; ++ } ++ ++ if (test_and_set_bit(1, &rtc_status)) ++ return -EBUSY; ++ ++ rtc = rtc_device_register(pdev->name, &pdev->dev, &mcf_rtc_ops, ++ THIS_MODULE); ++ if (IS_ERR(rtc)) { ++ ret = PTR_ERR(rtc); ++ if (pdata->irq >= 0) ++ free_irq(pdata->irq, pdev); ++ kfree(pdata); ++ return ret; ++ } ++ pdata->rtc = rtc; ++ platform_set_drvdata(pdev, pdata); ++ ++ tv.tv_nsec = 0; ++ tv.tv_sec = get_alarm_or_time(&pdev->dev, MCF_RTC_TIME); ++ ++#ifdef CONFIG_M5301x ++ writel(RTC_INPUT_CLK_32768HZ, MCF_RTC_GOC); ++ writel(0x08, MCF_RTC_OCEN); ++#endif ++ writeb(4, MCFSIM_ICR_RTC); ++ ++ writel(MCF_RTC_IER_1HZ, MCF_RTC_IER); /* Unmask the 1Hz timer */ ++ ++ writel(MCF_RTC_CR_EN, MCF_RTC_CR); ++ if ((readl(MCF_RTC_CR) & MCF_RTC_CR_EN) == 0) { ++ printk(KERN_ALERT "RTC Hardware couldn't be enabled!\n"); ++ return -EPERM; ++ } ++ ++ printk(KERN_INFO "Real Time Clock Driver v%s\n", RTC_VERSION); ++ return ret; ++} ++ ++static int __devexit mcf_rtc_remove(struct platform_device *pdev) ++{ ++ struct rtc_plat_data *pdata = platform_get_drvdata(pdev); ++ ++ rtc_device_unregister(pdata->rtc); ++ if (pdata->irq >= 0) ++ free_irq(pdata->irq, pdev); ++ kfree(pdata); ++ mcf_rtc_release(NULL); ++ return 0; ++} ++ ++/*! ++ * Contains pointers to the power management callback functions. ++ */ ++MODULE_ALIAS("mcf-rtc"); ++static struct platform_driver mcf_rtc_driver = { ++ .driver = { ++ .name = "mcf-rtc", ++ .owner = THIS_MODULE, ++ }, ++ .probe = mcf_rtc_probe, ++ .remove = __devexit_p(mcf_rtc_remove), ++}; ++ ++/*! ++ * This function creates the /proc/driver/rtc file and registers the device RTC ++ * in the /dev/misc directory. It also reads the RTC value from external source ++ * and setup the internal RTC properly. ++ * ++ * @return -1 if RTC is failed to initialize; 0 is successful. ++ */ ++static int __init mcf_rtc_init(void) ++{ ++ return platform_driver_register(&mcf_rtc_driver); ++} ++ ++/*! ++ * This function removes the /proc/driver/rtc file and un-registers the ++ * device RTC from the /dev/misc directory. ++ */ ++static void __exit mcf_rtc_exit(void) ++{ ++ platform_driver_unregister(&mcf_rtc_driver); ++ ++} ++ ++module_init(mcf_rtc_init); ++module_exit(mcf_rtc_exit); ++ ++MODULE_AUTHOR("Freescale Semiconductor, Inc."); ++MODULE_DESCRIPTION("Real Time Clock Driver (MCF)"); ++MODULE_LICENSE("GPL"); -- cgit v1.2.3