From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/drivers/rtc/rtc-pcap.c | 194 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 194 insertions(+) create mode 100644 kernel/drivers/rtc/rtc-pcap.c (limited to 'kernel/drivers/rtc/rtc-pcap.c') diff --git a/kernel/drivers/rtc/rtc-pcap.c b/kernel/drivers/rtc/rtc-pcap.c new file mode 100644 index 000000000..c4433240d --- /dev/null +++ b/kernel/drivers/rtc/rtc-pcap.c @@ -0,0 +1,194 @@ +/* + * pcap rtc code for Motorola EZX phones + * + * Copyright (c) 2008 guiming zhuo + * Copyright (c) 2009 Daniel Ribeiro + * + * Based on Motorola's rtc.c Copyright (c) 2003-2005 Motorola + * + * 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. + * + */ + +#include +#include +#include +#include +#include +#include +#include + +struct pcap_rtc { + struct pcap_chip *pcap; + struct rtc_device *rtc; +}; + +static irqreturn_t pcap_rtc_irq(int irq, void *_pcap_rtc) +{ + struct pcap_rtc *pcap_rtc = _pcap_rtc; + unsigned long rtc_events; + + if (irq == pcap_to_irq(pcap_rtc->pcap, PCAP_IRQ_1HZ)) + rtc_events = RTC_IRQF | RTC_UF; + else if (irq == pcap_to_irq(pcap_rtc->pcap, PCAP_IRQ_TODA)) + rtc_events = RTC_IRQF | RTC_AF; + else + rtc_events = 0; + + rtc_update_irq(pcap_rtc->rtc, 1, rtc_events); + return IRQ_HANDLED; +} + +static int pcap_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) +{ + struct platform_device *pdev = to_platform_device(dev); + struct pcap_rtc *pcap_rtc = platform_get_drvdata(pdev); + struct rtc_time *tm = &alrm->time; + unsigned long secs; + u32 tod; /* time of day, seconds since midnight */ + u32 days; /* days since 1/1/1970 */ + + ezx_pcap_read(pcap_rtc->pcap, PCAP_REG_RTC_TODA, &tod); + secs = tod & PCAP_RTC_TOD_MASK; + + ezx_pcap_read(pcap_rtc->pcap, PCAP_REG_RTC_DAYA, &days); + secs += (days & PCAP_RTC_DAY_MASK) * SEC_PER_DAY; + + rtc_time_to_tm(secs, tm); + + return 0; +} + +static int pcap_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) +{ + struct platform_device *pdev = to_platform_device(dev); + struct pcap_rtc *pcap_rtc = platform_get_drvdata(pdev); + struct rtc_time *tm = &alrm->time; + unsigned long secs; + u32 tod, days; + + rtc_tm_to_time(tm, &secs); + + tod = secs % SEC_PER_DAY; + ezx_pcap_write(pcap_rtc->pcap, PCAP_REG_RTC_TODA, tod); + + days = secs / SEC_PER_DAY; + ezx_pcap_write(pcap_rtc->pcap, PCAP_REG_RTC_DAYA, days); + + return 0; +} + +static int pcap_rtc_read_time(struct device *dev, struct rtc_time *tm) +{ + struct platform_device *pdev = to_platform_device(dev); + struct pcap_rtc *pcap_rtc = platform_get_drvdata(pdev); + unsigned long secs; + u32 tod, days; + + ezx_pcap_read(pcap_rtc->pcap, PCAP_REG_RTC_TOD, &tod); + secs = tod & PCAP_RTC_TOD_MASK; + + ezx_pcap_read(pcap_rtc->pcap, PCAP_REG_RTC_DAY, &days); + secs += (days & PCAP_RTC_DAY_MASK) * SEC_PER_DAY; + + rtc_time_to_tm(secs, tm); + + return rtc_valid_tm(tm); +} + +static int pcap_rtc_set_mmss(struct device *dev, unsigned long secs) +{ + struct platform_device *pdev = to_platform_device(dev); + struct pcap_rtc *pcap_rtc = platform_get_drvdata(pdev); + u32 tod, days; + + tod = secs % SEC_PER_DAY; + ezx_pcap_write(pcap_rtc->pcap, PCAP_REG_RTC_TOD, tod); + + days = secs / SEC_PER_DAY; + ezx_pcap_write(pcap_rtc->pcap, PCAP_REG_RTC_DAY, days); + + return 0; +} + +static int pcap_rtc_irq_enable(struct device *dev, int pirq, unsigned int en) +{ + struct platform_device *pdev = to_platform_device(dev); + struct pcap_rtc *pcap_rtc = platform_get_drvdata(pdev); + + if (en) + enable_irq(pcap_to_irq(pcap_rtc->pcap, pirq)); + else + disable_irq(pcap_to_irq(pcap_rtc->pcap, pirq)); + + return 0; +} + +static int pcap_rtc_alarm_irq_enable(struct device *dev, unsigned int en) +{ + return pcap_rtc_irq_enable(dev, PCAP_IRQ_TODA, en); +} + +static const struct rtc_class_ops pcap_rtc_ops = { + .read_time = pcap_rtc_read_time, + .read_alarm = pcap_rtc_read_alarm, + .set_alarm = pcap_rtc_set_alarm, + .set_mmss = pcap_rtc_set_mmss, + .alarm_irq_enable = pcap_rtc_alarm_irq_enable, +}; + +static int __init pcap_rtc_probe(struct platform_device *pdev) +{ + struct pcap_rtc *pcap_rtc; + int timer_irq, alarm_irq; + int err = -ENOMEM; + + pcap_rtc = devm_kzalloc(&pdev->dev, sizeof(struct pcap_rtc), + GFP_KERNEL); + if (!pcap_rtc) + return err; + + pcap_rtc->pcap = dev_get_drvdata(pdev->dev.parent); + + platform_set_drvdata(pdev, pcap_rtc); + + pcap_rtc->rtc = devm_rtc_device_register(&pdev->dev, "pcap", + &pcap_rtc_ops, THIS_MODULE); + if (IS_ERR(pcap_rtc->rtc)) + return PTR_ERR(pcap_rtc->rtc); + + timer_irq = pcap_to_irq(pcap_rtc->pcap, PCAP_IRQ_1HZ); + alarm_irq = pcap_to_irq(pcap_rtc->pcap, PCAP_IRQ_TODA); + + err = devm_request_irq(&pdev->dev, timer_irq, pcap_rtc_irq, 0, + "RTC Timer", pcap_rtc); + if (err) + return err; + + err = devm_request_irq(&pdev->dev, alarm_irq, pcap_rtc_irq, 0, + "RTC Alarm", pcap_rtc); + if (err) + return err; + + return 0; +} + +static int __exit pcap_rtc_remove(struct platform_device *pdev) +{ + return 0; +} + +static struct platform_driver pcap_rtc_driver = { + .remove = __exit_p(pcap_rtc_remove), + .driver = { + .name = "pcap-rtc", + }, +}; + +module_platform_driver_probe(pcap_rtc_driver, pcap_rtc_probe); + +MODULE_DESCRIPTION("Motorola pcap rtc driver"); +MODULE_AUTHOR("guiming zhuo "); +MODULE_LICENSE("GPL"); -- cgit 1.2.3-korg