Release 4.14 drivers/rtc/rtc-pcf50633.c
/* NXP PCF50633 RTC Driver
*
* (C) 2006-2008 by Openmoko, Inc.
* Author: Balaji Rao <balajirrao@openmoko.org>
* All rights reserved.
*
* Broken down from monstrous PCF50633 driver mainly by
* Harald Welte, Andy Green and Werner Almesberger
*
* 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.
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/rtc.h>
#include <linux/bcd.h>
#include <linux/err.h>
#include <linux/mfd/pcf50633/core.h>
#define PCF50633_REG_RTCSC 0x59
/* Second */
#define PCF50633_REG_RTCMN 0x5a
/* Minute */
#define PCF50633_REG_RTCHR 0x5b
/* Hour */
#define PCF50633_REG_RTCWD 0x5c
/* Weekday */
#define PCF50633_REG_RTCDT 0x5d
/* Day */
#define PCF50633_REG_RTCMT 0x5e
/* Month */
#define PCF50633_REG_RTCYR 0x5f
/* Year */
#define PCF50633_REG_RTCSCA 0x60
/* Alarm Second */
#define PCF50633_REG_RTCMNA 0x61
/* Alarm Minute */
#define PCF50633_REG_RTCHRA 0x62
/* Alarm Hour */
#define PCF50633_REG_RTCWDA 0x63
/* Alarm Weekday */
#define PCF50633_REG_RTCDTA 0x64
/* Alarm Day */
#define PCF50633_REG_RTCMTA 0x65
/* Alarm Month */
#define PCF50633_REG_RTCYRA 0x66
/* Alarm Year */
enum pcf50633_time_indexes {
PCF50633_TI_SEC,
PCF50633_TI_MIN,
PCF50633_TI_HOUR,
PCF50633_TI_WKDAY,
PCF50633_TI_DAY,
PCF50633_TI_MONTH,
PCF50633_TI_YEAR,
PCF50633_TI_EXTENT /* always last */
};
struct pcf50633_time {
u_int8_t time[PCF50633_TI_EXTENT];
};
struct pcf50633_rtc {
int alarm_enabled;
int alarm_pending;
struct pcf50633 *pcf;
struct rtc_device *rtc_dev;
};
static void pcf2rtc_time(struct rtc_time *rtc, struct pcf50633_time *pcf)
{
rtc->tm_sec = bcd2bin(pcf->time[PCF50633_TI_SEC]);
rtc->tm_min = bcd2bin(pcf->time[PCF50633_TI_MIN]);
rtc->tm_hour = bcd2bin(pcf->time[PCF50633_TI_HOUR]);
rtc->tm_wday = bcd2bin(pcf->time[PCF50633_TI_WKDAY]);
rtc->tm_mday = bcd2bin(pcf->time[PCF50633_TI_DAY]);
rtc->tm_mon = bcd2bin(pcf->time[PCF50633_TI_MONTH]) - 1;
rtc->tm_year = bcd2bin(pcf->time[PCF50633_TI_YEAR]) + 100;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Balaji Rao | 116 | 98.31% | 1 | 50.00% |
| Rask Ingemann Lambertsen | 2 | 1.69% | 1 | 50.00% |
| Total | 118 | 100.00% | 2 | 100.00% |
static void rtc2pcf_time(struct pcf50633_time *pcf, struct rtc_time *rtc)
{
pcf->time[PCF50633_TI_SEC] = bin2bcd(rtc->tm_sec);
pcf->time[PCF50633_TI_MIN] = bin2bcd(rtc->tm_min);
pcf->time[PCF50633_TI_HOUR] = bin2bcd(rtc->tm_hour);
pcf->time[PCF50633_TI_WKDAY] = bin2bcd(rtc->tm_wday);
pcf->time[PCF50633_TI_DAY] = bin2bcd(rtc->tm_mday);
pcf->time[PCF50633_TI_MONTH] = bin2bcd(rtc->tm_mon + 1);
pcf->time[PCF50633_TI_YEAR] = bin2bcd(rtc->tm_year % 100);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Balaji Rao | 116 | 98.31% | 1 | 50.00% |
| Rask Ingemann Lambertsen | 2 | 1.69% | 1 | 50.00% |
| Total | 118 | 100.00% | 2 | 100.00% |
static int
pcf50633_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
{
struct pcf50633_rtc *rtc = dev_get_drvdata(dev);
int err;
if (enabled)
err = pcf50633_irq_unmask(rtc->pcf, PCF50633_IRQ_ALARM);
else
err = pcf50633_irq_mask(rtc->pcf, PCF50633_IRQ_ALARM);
if (err < 0)
return err;
rtc->alarm_enabled = enabled;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Balaji Rao | 73 | 100.00% | 1 | 100.00% |
| Total | 73 | 100.00% | 1 | 100.00% |
static int pcf50633_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
struct pcf50633_rtc *rtc;
struct pcf50633_time pcf_tm;
int ret;
rtc = dev_get_drvdata(dev);
ret = pcf50633_read_block(rtc->pcf, PCF50633_REG_RTCSC,
PCF50633_TI_EXTENT,
&pcf_tm.time[0]);
if (ret != PCF50633_TI_EXTENT) {
dev_err(dev, "Failed to read time\n");
return -EIO;
}
dev_dbg(dev, "PCF_TIME: %02x.%02x.%02x %02x:%02x:%02x\n",
pcf_tm.time[PCF50633_TI_DAY],
pcf_tm.time[PCF50633_TI_MONTH],
pcf_tm.time[PCF50633_TI_YEAR],
pcf_tm.time[PCF50633_TI_HOUR],
pcf_tm.time[PCF50633_TI_MIN],
pcf_tm.time[PCF50633_TI_SEC]);
pcf2rtc_time(tm, &pcf_tm);
dev_dbg(dev, "RTC_TIME: %u.%u.%u %u:%u:%u\n",
tm->tm_mday, tm->tm_mon, tm->tm_year,
tm->tm_hour, tm->tm_min, tm->tm_sec);
return rtc_valid_tm(tm);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Balaji Rao | 169 | 100.00% | 1 | 100.00% |
| Total | 169 | 100.00% | 1 | 100.00% |
static int pcf50633_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
struct pcf50633_rtc *rtc;
struct pcf50633_time pcf_tm;
int alarm_masked, ret = 0;
rtc = dev_get_drvdata(dev);
dev_dbg(dev, "RTC_TIME: %u.%u.%u %u:%u:%u\n",
tm->tm_mday, tm->tm_mon, tm->tm_year,
tm->tm_hour, tm->tm_min, tm->tm_sec);
rtc2pcf_time(&pcf_tm, tm);
dev_dbg(dev, "PCF_TIME: %02x.%02x.%02x %02x:%02x:%02x\n",
pcf_tm.time[PCF50633_TI_DAY],
pcf_tm.time[PCF50633_TI_MONTH],
pcf_tm.time[PCF50633_TI_YEAR],
pcf_tm.time[PCF50633_TI_HOUR],
pcf_tm.time[PCF50633_TI_MIN],
pcf_tm.time[PCF50633_TI_SEC]);
alarm_masked = pcf50633_irq_mask_get(rtc->pcf, PCF50633_IRQ_ALARM);
if (!alarm_masked)
pcf50633_irq_mask(rtc->pcf, PCF50633_IRQ_ALARM);
/* Returns 0 on success */
ret = pcf50633_write_block(rtc->pcf, PCF50633_REG_RTCSC,
PCF50633_TI_EXTENT,
&pcf_tm.time[0]);
if (!alarm_masked)
pcf50633_irq_unmask(rtc->pcf, PCF50633_IRQ_ALARM);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Balaji Rao | 191 | 100.00% | 1 | 100.00% |
| Total | 191 | 100.00% | 1 | 100.00% |
static int pcf50633_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
struct pcf50633_rtc *rtc;
struct pcf50633_time pcf_tm;
int ret = 0;
rtc = dev_get_drvdata(dev);
alrm->enabled = rtc->alarm_enabled;
alrm->pending = rtc->alarm_pending;
ret = pcf50633_read_block(rtc->pcf, PCF50633_REG_RTCSCA,
PCF50633_TI_EXTENT, &pcf_tm.time[0]);
if (ret != PCF50633_TI_EXTENT) {
dev_err(dev, "Failed to read time\n");
return -EIO;
}
pcf2rtc_time(&alrm->time, &pcf_tm);
return rtc_valid_tm(&alrm->time);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Balaji Rao | 105 | 92.92% | 1 | 50.00% |
| Werner Almesberger | 8 | 7.08% | 1 | 50.00% |
| Total | 113 | 100.00% | 2 | 100.00% |
static int pcf50633_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
struct pcf50633_rtc *rtc;
struct pcf50633_time pcf_tm;
int alarm_masked, ret = 0;
rtc = dev_get_drvdata(dev);
rtc2pcf_time(&pcf_tm, &alrm->time);
/* do like mktime does and ignore tm_wday */
pcf_tm.time[PCF50633_TI_WKDAY] = 7;
alarm_masked = pcf50633_irq_mask_get(rtc->pcf, PCF50633_IRQ_ALARM);
/* disable alarm interrupt */
if (!alarm_masked)
pcf50633_irq_mask(rtc->pcf, PCF50633_IRQ_ALARM);
/* Returns 0 on success */
ret = pcf50633_write_block(rtc->pcf, PCF50633_REG_RTCSCA,
PCF50633_TI_EXTENT, &pcf_tm.time[0]);
if (!alrm->enabled)
rtc->alarm_pending = 0;
if (!alarm_masked || alrm->enabled)
pcf50633_irq_unmask(rtc->pcf, PCF50633_IRQ_ALARM);
rtc->alarm_enabled = alrm->enabled;
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Balaji Rao | 125 | 83.33% | 1 | 33.33% |
| Werner Almesberger | 25 | 16.67% | 2 | 66.67% |
| Total | 150 | 100.00% | 3 | 100.00% |
static const struct rtc_class_ops pcf50633_rtc_ops = {
.read_time = pcf50633_rtc_read_time,
.set_time = pcf50633_rtc_set_time,
.read_alarm = pcf50633_rtc_read_alarm,
.set_alarm = pcf50633_rtc_set_alarm,
.alarm_irq_enable = pcf50633_rtc_alarm_irq_enable,
};
static void pcf50633_rtc_irq(int irq, void *data)
{
struct pcf50633_rtc *rtc = data;
rtc_update_irq(rtc->rtc_dev, 1, RTC_AF | RTC_IRQF);
rtc->alarm_pending = 1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Balaji Rao | 33 | 84.62% | 1 | 50.00% |
| Werner Almesberger | 6 | 15.38% | 1 | 50.00% |
| Total | 39 | 100.00% | 2 | 100.00% |
static int pcf50633_rtc_probe(struct platform_device *pdev)
{
struct pcf50633_rtc *rtc;
rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL);
if (!rtc)
return -ENOMEM;
rtc->pcf = dev_to_pcf50633(pdev->dev.parent);
platform_set_drvdata(pdev, rtc);
rtc->rtc_dev = devm_rtc_device_register(&pdev->dev, "pcf50633-rtc",
&pcf50633_rtc_ops, THIS_MODULE);
if (IS_ERR(rtc->rtc_dev))
return PTR_ERR(rtc->rtc_dev);
pcf50633_register_irq(rtc->pcf, PCF50633_IRQ_ALARM,
pcf50633_rtc_irq, rtc);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Balaji Rao | 98 | 85.22% | 1 | 33.33% |
| Jingoo Han | 10 | 8.70% | 1 | 33.33% |
| Lars-Peter Clausen | 7 | 6.09% | 1 | 33.33% |
| Total | 115 | 100.00% | 3 | 100.00% |
static int pcf50633_rtc_remove(struct platform_device *pdev)
{
struct pcf50633_rtc *rtc;
rtc = platform_get_drvdata(pdev);
pcf50633_free_irq(rtc->pcf, PCF50633_IRQ_ALARM);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Balaji Rao | 35 | 100.00% | 1 | 100.00% |
| Total | 35 | 100.00% | 1 | 100.00% |
static struct platform_driver pcf50633_rtc_driver = {
.driver = {
.name = "pcf50633-rtc",
},
.probe = pcf50633_rtc_probe,
.remove = pcf50633_rtc_remove,
};
module_platform_driver(pcf50633_rtc_driver);
MODULE_DESCRIPTION("PCF50633 RTC driver");
MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
MODULE_LICENSE("GPL");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Balaji Rao | 1287 | 94.98% | 1 | 11.11% |
| Werner Almesberger | 42 | 3.10% | 2 | 22.22% |
| Jingoo Han | 10 | 0.74% | 1 | 11.11% |
| Lars-Peter Clausen | 7 | 0.52% | 1 | 11.11% |
| Rask Ingemann Lambertsen | 4 | 0.30% | 1 | 11.11% |
| Tejun Heo | 3 | 0.22% | 1 | 11.11% |
| Axel Lin | 1 | 0.07% | 1 | 11.11% |
| Julia Lawall | 1 | 0.07% | 1 | 11.11% |
| Total | 1355 | 100.00% | 9 | 100.00% |
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