mirror of
https://github.com/torvalds/linux.git
synced 2024-11-16 17:12:06 +00:00
rtc: tps80031: Remove driver
Driver was upstreamed in 2013 and never got a user, remove it. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20211021192258.21968-2-digetx@gmail.com
This commit is contained in:
Dmitry Osipenko
Alexandre Belloni
parent
814691c7f7
commit
005870f46c
@ -583,14 +583,6 @@ config RTC_DRV_TPS65910
|
||||
This driver can also be built as a module. If so, the module
|
||||
will be called rtc-tps65910.
|
||||
|
||||
config RTC_DRV_TPS80031
|
||||
tristate "TI TPS80031/TPS80032 RTC driver"
|
||||
depends on MFD_TPS80031
|
||||
help
|
||||
TI Power Management IC TPS80031 supports RTC functionality
|
||||
along with alarm. This driver supports the RTC driver for
|
||||
the TPS80031 RTC module.
|
||||
|
||||
config RTC_DRV_RC5T583
|
||||
tristate "RICOH 5T583 RTC driver"
|
||||
depends on MFD_RC5T583
|
||||
|
||||
@ -170,7 +170,6 @@ obj-$(CONFIG_RTC_DRV_TEGRA) += rtc-tegra.o
|
||||
obj-$(CONFIG_RTC_DRV_TEST) += rtc-test.o
|
||||
obj-$(CONFIG_RTC_DRV_TPS6586X) += rtc-tps6586x.o
|
||||
obj-$(CONFIG_RTC_DRV_TPS65910) += rtc-tps65910.o
|
||||
obj-$(CONFIG_RTC_DRV_TPS80031) += rtc-tps80031.o
|
||||
obj-$(CONFIG_RTC_DRV_TWL4030) += rtc-twl.o
|
||||
obj-$(CONFIG_RTC_DRV_V3020) += rtc-v3020.o
|
||||
obj-$(CONFIG_RTC_DRV_VR41XX) += rtc-vr41xx.o
|
||||
|
||||
@ -1,324 +0,0 @@
|
||||
// SPDX-License-Identifier: GPL-2.0-only
|
||||
/*
|
||||
* rtc-tps80031.c -- TI TPS80031/TPS80032 RTC driver
|
||||
*
|
||||
* RTC driver for TI TPS80031/TPS80032 Fully Integrated
|
||||
* Power Management with Power Path and Battery Charger
|
||||
*
|
||||
* Copyright (c) 2012, NVIDIA Corporation.
|
||||
*
|
||||
* Author: Laxman Dewangan <ldewangan@nvidia.com>
|
||||
*/
|
||||
|
||||
#include <linux/bcd.h>
|
||||
#include <linux/device.h>
|
||||
#include <linux/err.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/mfd/tps80031.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/pm.h>
|
||||
#include <linux/rtc.h>
|
||||
#include <linux/slab.h>
|
||||
|
||||
#define ENABLE_ALARM_INT 0x08
|
||||
#define ALARM_INT_STATUS 0x40
|
||||
|
||||
/**
|
||||
* Setting bit to 1 in STOP_RTC will run the RTC and
|
||||
* setting this bit to 0 will freeze RTC.
|
||||
*/
|
||||
#define STOP_RTC 0x1
|
||||
|
||||
/* Power on reset Values of RTC registers */
|
||||
#define TPS80031_RTC_POR_YEAR 0
|
||||
#define TPS80031_RTC_POR_MONTH 1
|
||||
#define TPS80031_RTC_POR_DAY 1
|
||||
|
||||
/* Numbers of registers for time and alarms */
|
||||
#define TPS80031_RTC_TIME_NUM_REGS 7
|
||||
#define TPS80031_RTC_ALARM_NUM_REGS 6
|
||||
|
||||
/**
|
||||
* PMU RTC have only 2 nibbles to store year information, so using an
|
||||
* offset of 100 to set the base year as 2000 for our driver.
|
||||
*/
|
||||
#define RTC_YEAR_OFFSET 100
|
||||
|
||||
struct tps80031_rtc {
|
||||
struct rtc_device *rtc;
|
||||
int irq;
|
||||
};
|
||||
|
||||
static int tps80031_rtc_read_time(struct device *dev, struct rtc_time *tm)
|
||||
{
|
||||
u8 buff[TPS80031_RTC_TIME_NUM_REGS];
|
||||
int ret;
|
||||
|
||||
ret = tps80031_reads(dev->parent, TPS80031_SLAVE_ID1,
|
||||
TPS80031_SECONDS_REG, TPS80031_RTC_TIME_NUM_REGS, buff);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "reading RTC_SECONDS_REG failed, err = %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
tm->tm_sec = bcd2bin(buff[0]);
|
||||
tm->tm_min = bcd2bin(buff[1]);
|
||||
tm->tm_hour = bcd2bin(buff[2]);
|
||||
tm->tm_mday = bcd2bin(buff[3]);
|
||||
tm->tm_mon = bcd2bin(buff[4]) - 1;
|
||||
tm->tm_year = bcd2bin(buff[5]) + RTC_YEAR_OFFSET;
|
||||
tm->tm_wday = bcd2bin(buff[6]);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tps80031_rtc_set_time(struct device *dev, struct rtc_time *tm)
|
||||
{
|
||||
u8 buff[7];
|
||||
int ret;
|
||||
|
||||
buff[0] = bin2bcd(tm->tm_sec);
|
||||
buff[1] = bin2bcd(tm->tm_min);
|
||||
buff[2] = bin2bcd(tm->tm_hour);
|
||||
buff[3] = bin2bcd(tm->tm_mday);
|
||||
buff[4] = bin2bcd(tm->tm_mon + 1);
|
||||
buff[5] = bin2bcd(tm->tm_year % RTC_YEAR_OFFSET);
|
||||
buff[6] = bin2bcd(tm->tm_wday);
|
||||
|
||||
/* Stop RTC while updating the RTC time registers */
|
||||
ret = tps80031_clr_bits(dev->parent, TPS80031_SLAVE_ID1,
|
||||
TPS80031_RTC_CTRL_REG, STOP_RTC);
|
||||
if (ret < 0) {
|
||||
dev_err(dev->parent, "Stop RTC failed, err = %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = tps80031_writes(dev->parent, TPS80031_SLAVE_ID1,
|
||||
TPS80031_SECONDS_REG,
|
||||
TPS80031_RTC_TIME_NUM_REGS, buff);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "writing RTC_SECONDS_REG failed, err %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = tps80031_set_bits(dev->parent, TPS80031_SLAVE_ID1,
|
||||
TPS80031_RTC_CTRL_REG, STOP_RTC);
|
||||
if (ret < 0)
|
||||
dev_err(dev->parent, "Start RTC failed, err = %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int tps80031_rtc_alarm_irq_enable(struct device *dev,
|
||||
unsigned int enable)
|
||||
{
|
||||
int ret;
|
||||
|
||||
if (enable)
|
||||
ret = tps80031_set_bits(dev->parent, TPS80031_SLAVE_ID1,
|
||||
TPS80031_RTC_INTERRUPTS_REG, ENABLE_ALARM_INT);
|
||||
else
|
||||
ret = tps80031_clr_bits(dev->parent, TPS80031_SLAVE_ID1,
|
||||
TPS80031_RTC_INTERRUPTS_REG, ENABLE_ALARM_INT);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "Update on RTC_INT failed, err = %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tps80031_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
|
||||
{
|
||||
u8 buff[TPS80031_RTC_ALARM_NUM_REGS];
|
||||
int ret;
|
||||
|
||||
buff[0] = bin2bcd(alrm->time.tm_sec);
|
||||
buff[1] = bin2bcd(alrm->time.tm_min);
|
||||
buff[2] = bin2bcd(alrm->time.tm_hour);
|
||||
buff[3] = bin2bcd(alrm->time.tm_mday);
|
||||
buff[4] = bin2bcd(alrm->time.tm_mon + 1);
|
||||
buff[5] = bin2bcd(alrm->time.tm_year % RTC_YEAR_OFFSET);
|
||||
ret = tps80031_writes(dev->parent, TPS80031_SLAVE_ID1,
|
||||
TPS80031_ALARM_SECONDS_REG,
|
||||
TPS80031_RTC_ALARM_NUM_REGS, buff);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "Writing RTC_ALARM failed, err %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
return tps80031_rtc_alarm_irq_enable(dev, alrm->enabled);
|
||||
}
|
||||
|
||||
static int tps80031_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
|
||||
{
|
||||
u8 buff[6];
|
||||
int ret;
|
||||
|
||||
ret = tps80031_reads(dev->parent, TPS80031_SLAVE_ID1,
|
||||
TPS80031_ALARM_SECONDS_REG,
|
||||
TPS80031_RTC_ALARM_NUM_REGS, buff);
|
||||
if (ret < 0) {
|
||||
dev_err(dev->parent,
|
||||
"reading RTC_ALARM failed, err = %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
alrm->time.tm_sec = bcd2bin(buff[0]);
|
||||
alrm->time.tm_min = bcd2bin(buff[1]);
|
||||
alrm->time.tm_hour = bcd2bin(buff[2]);
|
||||
alrm->time.tm_mday = bcd2bin(buff[3]);
|
||||
alrm->time.tm_mon = bcd2bin(buff[4]) - 1;
|
||||
alrm->time.tm_year = bcd2bin(buff[5]) + RTC_YEAR_OFFSET;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int clear_alarm_int_status(struct device *dev, struct tps80031_rtc *rtc)
|
||||
{
|
||||
int ret;
|
||||
u8 buf;
|
||||
|
||||
/**
|
||||
* As per datasheet, A dummy read of this RTC_STATUS_REG register
|
||||
* is necessary before each I2C read in order to update the status
|
||||
* register value.
|
||||
*/
|
||||
ret = tps80031_read(dev->parent, TPS80031_SLAVE_ID1,
|
||||
TPS80031_RTC_STATUS_REG, &buf);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "reading RTC_STATUS failed. err = %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* clear Alarm status bits.*/
|
||||
ret = tps80031_set_bits(dev->parent, TPS80031_SLAVE_ID1,
|
||||
TPS80031_RTC_STATUS_REG, ALARM_INT_STATUS);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "clear Alarm INT failed, err = %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static irqreturn_t tps80031_rtc_irq(int irq, void *data)
|
||||
{
|
||||
struct device *dev = data;
|
||||
struct tps80031_rtc *rtc = dev_get_drvdata(dev);
|
||||
int ret;
|
||||
|
||||
ret = clear_alarm_int_status(dev, rtc);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
rtc_update_irq(rtc->rtc, 1, RTC_IRQF | RTC_AF);
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static const struct rtc_class_ops tps80031_rtc_ops = {
|
||||
.read_time = tps80031_rtc_read_time,
|
||||
.set_time = tps80031_rtc_set_time,
|
||||
.set_alarm = tps80031_rtc_set_alarm,
|
||||
.read_alarm = tps80031_rtc_read_alarm,
|
||||
.alarm_irq_enable = tps80031_rtc_alarm_irq_enable,
|
||||
};
|
||||
|
||||
static int tps80031_rtc_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct tps80031_rtc *rtc;
|
||||
struct rtc_time tm;
|
||||
int ret;
|
||||
|
||||
rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL);
|
||||
if (!rtc)
|
||||
return -ENOMEM;
|
||||
|
||||
rtc->irq = platform_get_irq(pdev, 0);
|
||||
platform_set_drvdata(pdev, rtc);
|
||||
|
||||
/* Start RTC */
|
||||
ret = tps80031_set_bits(pdev->dev.parent, TPS80031_SLAVE_ID1,
|
||||
TPS80031_RTC_CTRL_REG, STOP_RTC);
|
||||
if (ret < 0) {
|
||||
dev_err(&pdev->dev, "failed to start RTC. err = %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* If RTC have POR values, set time 01:01:2000 */
|
||||
tps80031_rtc_read_time(&pdev->dev, &tm);
|
||||
if ((tm.tm_year == RTC_YEAR_OFFSET + TPS80031_RTC_POR_YEAR) &&
|
||||
(tm.tm_mon == (TPS80031_RTC_POR_MONTH - 1)) &&
|
||||
(tm.tm_mday == TPS80031_RTC_POR_DAY)) {
|
||||
tm.tm_year = 2000;
|
||||
tm.tm_mday = 1;
|
||||
tm.tm_mon = 1;
|
||||
ret = tps80031_rtc_set_time(&pdev->dev, &tm);
|
||||
if (ret < 0) {
|
||||
dev_err(&pdev->dev,
|
||||
"RTC set time failed, err = %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
|
||||
/* Clear alarm intretupt status if it is there */
|
||||
ret = clear_alarm_int_status(&pdev->dev, rtc);
|
||||
if (ret < 0) {
|
||||
dev_err(&pdev->dev, "Clear alarm int failed, err = %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
rtc->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
|
||||
&tps80031_rtc_ops, THIS_MODULE);
|
||||
if (IS_ERR(rtc->rtc)) {
|
||||
ret = PTR_ERR(rtc->rtc);
|
||||
dev_err(&pdev->dev, "RTC registration failed, err %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = devm_request_threaded_irq(&pdev->dev, rtc->irq, NULL,
|
||||
tps80031_rtc_irq,
|
||||
IRQF_ONESHOT,
|
||||
dev_name(&pdev->dev), rtc);
|
||||
if (ret < 0) {
|
||||
dev_err(&pdev->dev, "request IRQ:%d failed, err = %d\n",
|
||||
rtc->irq, ret);
|
||||
return ret;
|
||||
}
|
||||
device_set_wakeup_capable(&pdev->dev, 1);
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM_SLEEP
|
||||
static int tps80031_rtc_suspend(struct device *dev)
|
||||
{
|
||||
struct tps80031_rtc *rtc = dev_get_drvdata(dev);
|
||||
|
||||
if (device_may_wakeup(dev))
|
||||
enable_irq_wake(rtc->irq);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tps80031_rtc_resume(struct device *dev)
|
||||
{
|
||||
struct tps80031_rtc *rtc = dev_get_drvdata(dev);
|
||||
|
||||
if (device_may_wakeup(dev))
|
||||
disable_irq_wake(rtc->irq);
|
||||
return 0;
|
||||
};
|
||||
#endif
|
||||
|
||||
static SIMPLE_DEV_PM_OPS(tps80031_pm_ops, tps80031_rtc_suspend,
|
||||
tps80031_rtc_resume);
|
||||
|
||||
static struct platform_driver tps80031_rtc_driver = {
|
||||
.driver = {
|
||||
.name = "tps80031-rtc",
|
||||
.pm = &tps80031_pm_ops,
|
||||
},
|
||||
.probe = tps80031_rtc_probe,
|
||||
};
|
||||
|
||||
module_platform_driver(tps80031_rtc_driver);
|
||||
|
||||
MODULE_ALIAS("platform:tps80031-rtc");
|
||||
MODULE_DESCRIPTION("TI TPS80031/TPS80032 RTC driver");
|
||||
MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
Loading…
Reference in New Issue
Block a user