diff options
Diffstat (limited to 'drivers/rtc/rtc-pcap.c')
| -rw-r--r-- | drivers/rtc/rtc-pcap.c | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/drivers/rtc/rtc-pcap.c b/drivers/rtc/rtc-pcap.c deleted file mode 100644 index d6651611a0c6..000000000000 --- a/drivers/rtc/rtc-pcap.c +++ /dev/null @@ -1,179 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * pcap rtc code for Motorola EZX phones - * - * Copyright (c) 2008 guiming zhuo <gmzhuo@gmail.com> - * Copyright (c) 2009 Daniel Ribeiro <drwyrm@gmail.com> - * - * Based on Motorola's rtc.c Copyright (c) 2003-2005 Motorola - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/mfd/ezx-pcap.h> -#include <linux/rtc.h> -#include <linux/slab.h> -#include <linux/platform_device.h> - -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 pcap_rtc *pcap_rtc = dev_get_drvdata(dev); - 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_time64_to_tm(secs, tm); - - return 0; -} - -static int pcap_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) -{ - struct pcap_rtc *pcap_rtc = dev_get_drvdata(dev); - unsigned long secs = rtc_tm_to_time64(&alrm->time); - u32 tod, days; - - 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 pcap_rtc *pcap_rtc = dev_get_drvdata(dev); - 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_time64_to_tm(secs, tm); - - return 0; -} - -static int pcap_rtc_set_time(struct device *dev, struct rtc_time *tm) -{ - struct pcap_rtc *pcap_rtc = dev_get_drvdata(dev); - unsigned long secs = rtc_tm_to_time64(tm); - 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 pcap_rtc *pcap_rtc = dev_get_drvdata(dev); - - 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, - .set_time = pcap_rtc_set_time, - .read_alarm = pcap_rtc_read_alarm, - .set_alarm = pcap_rtc_set_alarm, - .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_allocate_device(&pdev->dev); - if (IS_ERR(pcap_rtc->rtc)) - return PTR_ERR(pcap_rtc->rtc); - - pcap_rtc->rtc->ops = &pcap_rtc_ops; - pcap_rtc->rtc->range_max = (1 << 14) * 86400ULL - 1; - - 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 devm_rtc_register_device(pcap_rtc->rtc); -} - -static struct platform_driver pcap_rtc_driver = { - .driver = { - .name = "pcap-rtc", - }, -}; - -module_platform_driver_probe(pcap_rtc_driver, pcap_rtc_probe); - -MODULE_DESCRIPTION("Motorola pcap rtc driver"); -MODULE_AUTHOR("guiming zhuo <gmzhuo@gmail.com>"); -MODULE_LICENSE("GPL"); |