diff options
Diffstat (limited to 'target/linux/coldfire/patches/026-Add-RTC-driver-support-for-MCF5445x.patch')
| -rw-r--r-- | target/linux/coldfire/patches/026-Add-RTC-driver-support-for-MCF5445x.patch | 627 |
1 files changed, 0 insertions, 627 deletions
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 deleted file mode 100644 index 25b9794..0000000 --- a/target/linux/coldfire/patches/026-Add-RTC-driver-support-for-MCF5445x.patch +++ /dev/null @@ -1,627 +0,0 @@ -From 40563ab5aa698191dbd8a05fe6053aa790eee2a1 Mon Sep 17 00:00:00 2001 -From: Alison Wang <b18965@freescale.com> -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 <b18965@freescale.com> ---- - 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 <linux/rtc.h> -+#include <linux/module.h> -+#include <linux/fs.h> -+#include <linux/init.h> -+#include <linux/interrupt.h> -+#include <linux/platform_device.h> -+#include <linux/clk.h> -+#include <linux/uaccess.h> -+#include <asm/mcfsim.h> -+#include <linux/slab.h> -+#include <linux/io.h> -+ -+#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"); |