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-rw-r--r--drivers/rtc/Kconfig6
-rw-r--r--drivers/rtc/proc.c4
-rw-r--r--drivers/rtc/rtc-at91sam9.c2
-rw-r--r--drivers/rtc/rtc-au1xxx.c5
-rw-r--r--drivers/rtc/rtc-bd70528.c316
-rw-r--r--drivers/rtc/rtc-ds1374.c7
-rw-r--r--drivers/rtc/rtc-efi.c1
-rw-r--r--drivers/rtc/rtc-imxdi.c4
-rw-r--r--drivers/rtc/rtc-m41t80.c32
-rw-r--r--drivers/rtc/rtc-max6900.c8
-rw-r--r--drivers/rtc/rtc-max77686.c4
-rw-r--r--drivers/rtc/rtc-mxc_v2.c1
-rw-r--r--drivers/rtc/rtc-palmas.c15
-rw-r--r--drivers/rtc/rtc-pcf2127.c194
-rw-r--r--drivers/rtc/rtc-pcf85063.c6
-rw-r--r--drivers/rtc/rtc-pcf8523.c146
-rw-r--r--drivers/rtc/rtc-pcf8563.c2
-rw-r--r--drivers/rtc/rtc-rtd119x.c3
-rw-r--r--drivers/rtc/rtc-s5m.c4
-rw-r--r--drivers/rtc/rtc-sc27xx.c2
-rw-r--r--drivers/rtc/rtc-spear.c5
-rw-r--r--drivers/rtc/rtc-stm32.c6
-rw-r--r--drivers/rtc/rtc-tps6586x.c15
-rw-r--r--drivers/rtc/rtc-tps80031.c15
-rw-r--r--drivers/rtc/rtc-v3020.c2
-rw-r--r--drivers/rtc/sysfs.c2
26 files changed, 274 insertions, 533 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index d8c13fded164..12153d5801ce 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -501,11 +501,11 @@ config RTC_DRV_M41T80_WDT
watchdog timer in the ST M41T60 and M41T80 RTC chips series.
config RTC_DRV_BD70528
- tristate "ROHM BD70528, BD71815 and BD71828 PMIC RTC"
- depends on MFD_ROHM_BD71828 || MFD_ROHM_BD70528 && (BD70528_WATCHDOG || !BD70528_WATCHDOG)
+ tristate "ROHM BD71815 and BD71828 PMIC RTC"
+ depends on MFD_ROHM_BD71828
help
If you say Y here you will get support for the RTC
- block on ROHM BD70528, BD71815 and BD71828 Power Management IC.
+ block on ROHM BD71815 and BD71828 Power Management IC.
This driver can also be built as a module. If so, the module
will be called rtc-bd70528.
diff --git a/drivers/rtc/proc.c b/drivers/rtc/proc.c
index 73344598fc1b..cbcdbb19d848 100644
--- a/drivers/rtc/proc.c
+++ b/drivers/rtc/proc.c
@@ -23,8 +23,8 @@ static bool is_rtc_hctosys(struct rtc_device *rtc)
int size;
char name[NAME_SIZE];
- size = scnprintf(name, NAME_SIZE, "rtc%d", rtc->id);
- if (size > NAME_SIZE)
+ size = snprintf(name, NAME_SIZE, "rtc%d", rtc->id);
+ if (size >= NAME_SIZE)
return false;
return !strncmp(name, CONFIG_RTC_HCTOSYS_DEVICE, NAME_SIZE);
diff --git a/drivers/rtc/rtc-at91sam9.c b/drivers/rtc/rtc-at91sam9.c
index 2216be429ab7..b7b5ea1a4e67 100644
--- a/drivers/rtc/rtc-at91sam9.c
+++ b/drivers/rtc/rtc-at91sam9.c
@@ -184,7 +184,7 @@ static int at91_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm)
return -EILSEQ;
memset(alrm, 0, sizeof(*alrm));
- if (alarm != ALARM_DISABLED && offset != 0) {
+ if (alarm != ALARM_DISABLED) {
rtc_time64_to_tm(offset + alarm, tm);
dev_dbg(dev, "%s: %ptR\n", __func__, tm);
diff --git a/drivers/rtc/rtc-au1xxx.c b/drivers/rtc/rtc-au1xxx.c
index e6428b27b5d4..630ea5de6871 100644
--- a/drivers/rtc/rtc-au1xxx.c
+++ b/drivers/rtc/rtc-au1xxx.c
@@ -1,11 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Au1xxx counter0 (aka Time-Of-Year counter) RTC interface driver.
*
* Copyright (C) 2008 Manuel Lauss <mano@roarinelk.homelinux.net>
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
*/
/* All current Au1xxx SoCs have 2 counters fed by an external 32.768 kHz
diff --git a/drivers/rtc/rtc-bd70528.c b/drivers/rtc/rtc-bd70528.c
index 6454afca02a6..59b627fc1ecf 100644
--- a/drivers/rtc/rtc-bd70528.c
+++ b/drivers/rtc/rtc-bd70528.c
@@ -2,10 +2,9 @@
//
// Copyright (C) 2018 ROHM Semiconductors
//
-// RTC driver for ROHM BD70528 PMIC
+// RTC driver for ROHM BD71828 and BD71815 PMIC
#include <linux/bcd.h>
-#include <linux/mfd/rohm-bd70528.h>
#include <linux/mfd/rohm-bd71815.h>
#include <linux/mfd/rohm-bd71828.h>
#include <linux/module.h>
@@ -39,11 +38,6 @@ struct bd70528_rtc_data {
u8 year;
} __packed;
-struct bd70528_rtc_wake {
- struct bd70528_rtc_day time;
- u8 ctrl;
-} __packed;
-
struct bd71828_rtc_alm {
struct bd70528_rtc_data alm0;
struct bd70528_rtc_data alm1;
@@ -51,141 +45,14 @@ struct bd71828_rtc_alm {
u8 alm1_mask;
} __packed;
-struct bd70528_rtc_alm {
- struct bd70528_rtc_data data;
- u8 alm_mask;
- u8 alm_repeat;
-} __packed;
-
struct bd70528_rtc {
struct rohm_regmap_dev *parent;
struct regmap *regmap;
struct device *dev;
u8 reg_time_start;
u8 bd718xx_alm_block_start;
- bool has_rtc_timers;
};
-static int bd70528_set_wake(struct rohm_regmap_dev *bd70528,
- int enable, int *old_state)
-{
- int ret;
- unsigned int ctrl_reg;
-
- ret = regmap_read(bd70528->regmap, BD70528_REG_WAKE_EN, &ctrl_reg);
- if (ret)
- return ret;
-
- if (old_state) {
- if (ctrl_reg & BD70528_MASK_WAKE_EN)
- *old_state |= BD70528_WAKE_STATE_BIT;
- else
- *old_state &= ~BD70528_WAKE_STATE_BIT;
-
- if (!enable == !(*old_state & BD70528_WAKE_STATE_BIT))
- return 0;
- }
-
- if (enable)
- ctrl_reg |= BD70528_MASK_WAKE_EN;
- else
- ctrl_reg &= ~BD70528_MASK_WAKE_EN;
-
- return regmap_write(bd70528->regmap, BD70528_REG_WAKE_EN,
- ctrl_reg);
-}
-
-static int bd70528_set_elapsed_tmr(struct rohm_regmap_dev *bd70528,
- int enable, int *old_state)
-{
- int ret;
- unsigned int ctrl_reg;
-
- /*
- * TBD
- * What is the purpose of elapsed timer ?
- * Is the timeout registers counting down, or is the disable - re-enable
- * going to restart the elapsed-time counting? If counting is restarted
- * the timeout should be decreased by the amount of time that has
- * elapsed since starting the timer. Maybe we should store the monotonic
- * clock value when timer is started so that if RTC is set while timer
- * is armed we could do the compensation. This is a hack if RTC/system
- * clk are drifting. OTOH, RTC controlled via I2C is in any case
- * inaccurate...
- */
- ret = regmap_read(bd70528->regmap, BD70528_REG_ELAPSED_TIMER_EN,
- &ctrl_reg);
- if (ret)
- return ret;
-
- if (old_state) {
- if (ctrl_reg & BD70528_MASK_ELAPSED_TIMER_EN)
- *old_state |= BD70528_ELAPSED_STATE_BIT;
- else
- *old_state &= ~BD70528_ELAPSED_STATE_BIT;
-
- if ((!enable) == (!(*old_state & BD70528_ELAPSED_STATE_BIT)))
- return 0;
- }
-
- if (enable)
- ctrl_reg |= BD70528_MASK_ELAPSED_TIMER_EN;
- else
- ctrl_reg &= ~BD70528_MASK_ELAPSED_TIMER_EN;
-
- return regmap_write(bd70528->regmap, BD70528_REG_ELAPSED_TIMER_EN,
- ctrl_reg);
-}
-
-static int bd70528_set_rtc_based_timers(struct bd70528_rtc *r, int new_state,
- int *old_state)
-{
- int ret;
-
- ret = bd70528_wdt_set(r->parent, new_state & BD70528_WDT_STATE_BIT,
- old_state);
- if (ret) {
- dev_err(r->dev,
- "Failed to disable WDG for RTC setting (%d)\n", ret);
- return ret;
- }
- ret = bd70528_set_elapsed_tmr(r->parent,
- new_state & BD70528_ELAPSED_STATE_BIT,
- old_state);
- if (ret) {
- dev_err(r->dev,
- "Failed to disable 'elapsed timer' for RTC setting\n");
- return ret;
- }
- ret = bd70528_set_wake(r->parent, new_state & BD70528_WAKE_STATE_BIT,
- old_state);
- if (ret) {
- dev_err(r->dev,
- "Failed to disable 'wake timer' for RTC setting\n");
- return ret;
- }
-
- return ret;
-}
-
-static int bd70528_re_enable_rtc_based_timers(struct bd70528_rtc *r,
- int old_state)
-{
- if (!r->has_rtc_timers)
- return 0;
-
- return bd70528_set_rtc_based_timers(r, old_state, NULL);
-}
-
-static int bd70528_disable_rtc_based_timers(struct bd70528_rtc *r,
- int *old_state)
-{
- if (!r->has_rtc_timers)
- return 0;
-
- return bd70528_set_rtc_based_timers(r, 0, old_state);
-}
-
static inline void tmday2rtc(struct rtc_time *t, struct bd70528_rtc_day *d)
{
d->sec &= ~BD70528_MASK_RTC_SEC;
@@ -267,52 +134,6 @@ static int bd71828_set_alarm(struct device *dev, struct rtc_wkalrm *a)
}
-static int bd70528_set_alarm(struct device *dev, struct rtc_wkalrm *a)
-{
- struct bd70528_rtc_wake wake;
- struct bd70528_rtc_alm alm;
- int ret;
- struct bd70528_rtc *r = dev_get_drvdata(dev);
-
- ret = regmap_bulk_read(r->regmap, BD70528_REG_RTC_WAKE_START, &wake,
- sizeof(wake));
- if (ret) {
- dev_err(dev, "Failed to read wake regs\n");
- return ret;
- }
-
- ret = regmap_bulk_read(r->regmap, BD70528_REG_RTC_ALM_START, &alm,
- sizeof(alm));
- if (ret) {
- dev_err(dev, "Failed to read alarm regs\n");
- return ret;
- }
-
- tm2rtc(&a->time, &alm.data);
- tmday2rtc(&a->time, &wake.time);
-
- if (a->enabled) {
- alm.alm_mask &= ~BD70528_MASK_ALM_EN;
- wake.ctrl |= BD70528_MASK_WAKE_EN;
- } else {
- alm.alm_mask |= BD70528_MASK_ALM_EN;
- wake.ctrl &= ~BD70528_MASK_WAKE_EN;
- }
-
- ret = regmap_bulk_write(r->regmap, BD70528_REG_RTC_WAKE_START, &wake,
- sizeof(wake));
- if (ret) {
- dev_err(dev, "Failed to set wake time\n");
- return ret;
- }
- ret = regmap_bulk_write(r->regmap, BD70528_REG_RTC_ALM_START, &alm,
- sizeof(alm));
- if (ret)
- dev_err(dev, "Failed to set alarm time\n");
-
- return ret;
-}
-
static int bd71828_read_alarm(struct device *dev, struct rtc_wkalrm *a)
{
int ret;
@@ -336,78 +157,28 @@ static int bd71828_read_alarm(struct device *dev, struct rtc_wkalrm *a)
return 0;
}
-static int bd70528_read_alarm(struct device *dev, struct rtc_wkalrm *a)
+static int bd71828_set_time(struct device *dev, struct rtc_time *t)
{
- struct bd70528_rtc_alm alm;
int ret;
- struct bd70528_rtc *r = dev_get_drvdata(dev);
-
- ret = regmap_bulk_read(r->regmap, BD70528_REG_RTC_ALM_START, &alm,
- sizeof(alm));
- if (ret) {
- dev_err(dev, "Failed to read alarm regs\n");
- return ret;
- }
-
- rtc2tm(&alm.data, &a->time);
- a->time.tm_mday = -1;
- a->time.tm_mon = -1;
- a->time.tm_year = -1;
- a->enabled = !(alm.alm_mask & BD70528_MASK_ALM_EN);
- a->pending = 0;
-
- return 0;
-}
-
-static int bd70528_set_time_locked(struct device *dev, struct rtc_time *t)
-{
- int ret, tmpret, old_states;
struct bd70528_rtc_data rtc_data;
struct bd70528_rtc *r = dev_get_drvdata(dev);
- ret = bd70528_disable_rtc_based_timers(r, &old_states);
- if (ret)
- return ret;
-
- tmpret = regmap_bulk_read(r->regmap, r->reg_time_start, &rtc_data,
- sizeof(rtc_data));
- if (tmpret) {
+ ret = regmap_bulk_read(r->regmap, r->reg_time_start, &rtc_data,
+ sizeof(rtc_data));
+ if (ret) {
dev_err(dev, "Failed to read RTC time registers\n");
- goto renable_out;
+ return ret;
}
tm2rtc(t, &rtc_data);
- tmpret = regmap_bulk_write(r->regmap, r->reg_time_start, &rtc_data,
- sizeof(rtc_data));
- if (tmpret) {
+ ret = regmap_bulk_write(r->regmap, r->reg_time_start, &rtc_data,
+ sizeof(rtc_data));
+ if (ret)
dev_err(dev, "Failed to set RTC time\n");
- goto renable_out;
- }
-
-renable_out:
- ret = bd70528_re_enable_rtc_based_timers(r, old_states);
- if (tmpret)
- ret = tmpret;
return ret;
}
-static int bd71828_set_time(struct device *dev, struct rtc_time *t)
-{
- return bd70528_set_time_locked(dev, t);
-}
-
-static int bd70528_set_time(struct device *dev, struct rtc_time *t)
-{
- int ret;
- struct bd70528_rtc *r = dev_get_drvdata(dev);
-
- bd70528_wdt_lock(r->parent);
- ret = bd70528_set_time_locked(dev, t);
- bd70528_wdt_unlock(r->parent);
- return ret;
-}
-
static int bd70528_get_time(struct device *dev, struct rtc_time *t)
{
struct bd70528_rtc *r = dev_get_drvdata(dev);
@@ -427,31 +198,6 @@ static int bd70528_get_time(struct device *dev, struct rtc_time *t)
return 0;
}
-static int bd70528_alm_enable(struct device *dev, unsigned int enabled)
-{
- int ret;
- unsigned int enableval = BD70528_MASK_ALM_EN;
- struct bd70528_rtc *r = dev_get_drvdata(dev);
-
- if (enabled)
- enableval = 0;
-
- bd70528_wdt_lock(r->parent);
- ret = bd70528_set_wake(r->parent, enabled, NULL);
- if (ret) {
- dev_err(dev, "Failed to change wake state\n");
- goto out_unlock;
- }
- ret = regmap_update_bits(r->regmap, BD70528_REG_RTC_ALM_MASK,
- BD70528_MASK_ALM_EN, enableval);
- if (ret)
- dev_err(dev, "Failed to change alarm state\n");
-
-out_unlock:
- bd70528_wdt_unlock(r->parent);
- return ret;
-}
-
static int bd71828_alm_enable(struct device *dev, unsigned int enabled)
{
int ret;
@@ -470,14 +216,6 @@ static int bd71828_alm_enable(struct device *dev, unsigned int enabled)
return ret;
}
-static const struct rtc_class_ops bd70528_rtc_ops = {
- .read_time = bd70528_get_time,
- .set_time = bd70528_set_time,
- .read_alarm = bd70528_read_alarm,
- .set_alarm = bd70528_set_alarm,
- .alarm_irq_enable = bd70528_alm_enable,
-};
-
static const struct rtc_class_ops bd71828_rtc_ops = {
.read_time = bd70528_get_time,
.set_time = bd71828_set_time,
@@ -503,7 +241,6 @@ static int bd70528_probe(struct platform_device *pdev)
struct rtc_device *rtc;
int irq;
unsigned int hr;
- bool enable_main_irq = false;
u8 hour_reg;
enum rohm_chip_type chip = platform_get_device_id(pdev)->driver_data;
@@ -518,21 +255,9 @@ static int bd70528_probe(struct platform_device *pdev)
}
bd_rtc->dev = &pdev->dev;
+ rtc_ops = &bd71828_rtc_ops;
switch (chip) {
- case ROHM_CHIP_TYPE_BD70528:
- bd_rtc->parent = dev_get_drvdata(pdev->dev.parent);
- if (!bd_rtc->parent) {
- dev_err(&pdev->dev, "No MFD data\n");
- return -EINVAL;
- }
- irq_name = "bd70528-rtc-alm";
- bd_rtc->has_rtc_timers = true;
- bd_rtc->reg_time_start = BD70528_REG_RTC_START;
- hour_reg = BD70528_REG_RTC_HOUR;
- enable_main_irq = true;
- rtc_ops = &bd70528_rtc_ops;
- break;
case ROHM_CHIP_TYPE_BD71815:
irq_name = "bd71815-rtc-alm-0";
bd_rtc->reg_time_start = BD71815_REG_RTC_START;
@@ -549,14 +274,12 @@ static int bd70528_probe(struct platform_device *pdev)
*/
bd_rtc->bd718xx_alm_block_start = BD71815_REG_RTC_ALM_START;
hour_reg = BD71815_REG_HOUR;
- rtc_ops = &bd71828_rtc_ops;
break;
case ROHM_CHIP_TYPE_BD71828:
irq_name = "bd71828-rtc-alm-0";
bd_rtc->reg_time_start = BD71828_REG_RTC_START;
bd_rtc->bd718xx_alm_block_start = BD71828_REG_RTC_ALM_START;
hour_reg = BD71828_REG_RTC_HOUR;
- rtc_ops = &bd71828_rtc_ops;
break;
default:
dev_err(&pdev->dev, "Unknown chip\n");
@@ -611,27 +334,10 @@ static int bd70528_probe(struct platform_device *pdev)
if (ret)
return ret;
- /*
- * BD70528 irq controller is not touching the main mask register.
- * So enable the RTC block interrupts at main level. We can just
- * leave them enabled as irq-controller should disable irqs
- * from sub-registers when IRQ is disabled or freed.
- */
- if (enable_main_irq) {
- ret = regmap_update_bits(bd_rtc->regmap,
- BD70528_REG_INT_MAIN_MASK,
- BD70528_INT_RTC_MASK, 0);
- if (ret) {
- dev_err(&pdev->dev, "Failed to enable RTC interrupts\n");
- return ret;
- }
- }
-
return devm_rtc_register_device(rtc);
}
static const struct platform_device_id bd718x7_rtc_id[] = {
- { "bd70528-rtc", ROHM_CHIP_TYPE_BD70528 },
{ "bd71828-rtc", ROHM_CHIP_TYPE_BD71828 },
{ "bd71815-rtc", ROHM_CHIP_TYPE_BD71815 },
{ },
@@ -649,6 +355,6 @@ static struct platform_driver bd70528_rtc = {
module_platform_driver(bd70528_rtc);
MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>");
-MODULE_DESCRIPTION("ROHM BD70528 and BD71828 PMIC RTC driver");
+MODULE_DESCRIPTION("ROHM BD71828 and BD71815 PMIC RTC driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:bd70528-rtc");
diff --git a/drivers/rtc/rtc-ds1374.c b/drivers/rtc/rtc-ds1374.c
index fab79921a712..8db5a631bca8 100644
--- a/drivers/rtc/rtc-ds1374.c
+++ b/drivers/rtc/rtc-ds1374.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* RTC client/driver for the Maxim/Dallas DS1374 Real-Time Clock over I2C
*
@@ -6,11 +7,7 @@
*
* Copyright (C) 2014 Rose Technology
* Copyright (C) 2006-2007 Freescale Semiconductor
- *
- * 2005 (c) MontaVista Software, Inc. This file is licensed under
- * the terms of the GNU General Public License version 2. This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
+ * Copyright (c) 2005 MontaVista Software, Inc.
*/
/*
* It would be more efficient to use i2c msgs/i2c_transfer directly but, as
diff --git a/drivers/rtc/rtc-efi.c b/drivers/rtc/rtc-efi.c
index edb64debd173..138c5e0046c8 100644
--- a/drivers/rtc/rtc-efi.c
+++ b/drivers/rtc/rtc-efi.c
@@ -280,7 +280,6 @@ static struct platform_driver efi_rtc_driver = {
module_platform_driver_probe(efi_rtc_driver, efi_rtc_probe);
-MODULE_ALIAS("platform:rtc-efi");
MODULE_AUTHOR("dann frazier <dannf@dannf.org>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("EFI RTC driver");
diff --git a/drivers/rtc/rtc-imxdi.c b/drivers/rtc/rtc-imxdi.c
index c1806f4d68e7..4b712e5ab08a 100644
--- a/drivers/rtc/rtc-imxdi.c
+++ b/drivers/rtc/rtc-imxdi.c
@@ -24,6 +24,7 @@
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/platform_device.h>
+#include <linux/pm_wakeirq.h>
#include <linux/rtc.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
@@ -811,6 +812,9 @@ static int __init dryice_rtc_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, imxdi);
+ device_init_wakeup(&pdev->dev, true);
+ dev_pm_set_wake_irq(&pdev->dev, norm_irq);
+
imxdi->rtc->ops = &dryice_rtc_ops;
imxdi->rtc->range_max = U32_MAX;
diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c
index 89128fc29ccc..f736f8c22e96 100644
--- a/drivers/rtc/rtc-m41t80.c
+++ b/drivers/rtc/rtc-m41t80.c
@@ -544,10 +544,22 @@ static struct clk *m41t80_sqw_register_clk(struct m41t80_data *m41t80)
{
struct i2c_client *client = m41t80->client;
struct device_node *node = client->dev.of_node;
+ struct device_node *fixed_clock;
struct clk *clk;
struct clk_init_data init;
int ret;
+ fixed_clock = of_get_child_by_name(node, "clock");
+ if (fixed_clock) {
+ /*
+ * skip registering square wave clock when a fixed
+ * clock has been registered. The fixed clock is
+ * registered automatically when being referenced.
+ */
+ of_node_put(fixed_clock);
+ return 0;
+ }
+
/* First disable the clock */
ret = i2c_smbus_read_byte_data(client, M41T80_REG_ALARM_MON);
if (ret < 0)
@@ -599,10 +611,8 @@ static unsigned long wdt_is_open;
static int boot_flag;
/**
- * wdt_ping:
- *
- * Reload counter one with the watchdog timeout. We don't bother reloading
- * the cascade counter.
+ * wdt_ping - Reload counter one with the watchdog timeout.
+ * We don't bother reloading the cascade counter.
*/
static void wdt_ping(void)
{
@@ -638,9 +648,7 @@ static void wdt_ping(void)
}
/**
- * wdt_disable:
- *
- * disables watchdog.
+ * wdt_disable - disables watchdog.
*/
static void wdt_disable(void)
{
@@ -677,7 +685,7 @@ static void wdt_disable(void)
}
/**
- * wdt_write:
+ * wdt_write - write to watchdog.
* @file: file handle to the watchdog
* @buf: buffer to write (unused as data does not matter here
* @count: count of bytes
@@ -703,7 +711,7 @@ static ssize_t wdt_read(struct file *file, char __user *buf,
}
/**
- * wdt_ioctl:
+ * wdt_ioctl - ioctl handler to set watchdog.
* @file: file handle to the device
* @cmd: watchdog command
* @arg: argument pointer
@@ -778,7 +786,7 @@ static long wdt_unlocked_ioctl(struct file *file, unsigned int cmd,
}
/**
- * wdt_open:
+ * wdt_open - open a watchdog.
* @inode: inode of device
* @file: file handle to device
*
@@ -802,7 +810,7 @@ static int wdt_open(struct inode *inode, struct file *file)
}
/**
- * wdt_close:
+ * wdt_release - release a watchdog.
* @inode: inode to board
* @file: file handle to board
*
@@ -815,7 +823,7 @@ static int wdt_release(struct inode *inode, struct file *file)
}
/**
- * notify_sys:
+ * wdt_notify_sys - notify to watchdog.
* @this: our notifier block
* @code: the event being reported
* @unused: unused
diff --git a/drivers/rtc/rtc-max6900.c b/drivers/rtc/rtc-max6900.c
index ab60f13fa3ef..4beadfa41644 100644
--- a/drivers/rtc/rtc-max6900.c
+++ b/drivers/rtc/rtc-max6900.c
@@ -1,14 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* rtc class driver for the Maxim MAX6900 chip
*
+ * Copyright (c) 2007 MontaVista, Software, Inc.
+ *
* Author: Dale Farnsworth <dale@farnsworth.org>
*
* based on previously existing rtc class drivers
- *
- * 2007 (c) MontaVista, Software, Inc. This file is licensed under
- * the terms of the GNU General Public License version 2. This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
*/
#include <linux/module.h>
diff --git a/drivers/rtc/rtc-max77686.c b/drivers/rtc/rtc-max77686.c
index d51cc12114cb..eae7cb9faf1e 100644
--- a/drivers/rtc/rtc-max77686.c
+++ b/drivers/rtc/rtc-max77686.c
@@ -717,8 +717,8 @@ static int max77686_init_rtc_regmap(struct max77686_rtc_info *info)
add_rtc_irq:
ret = regmap_add_irq_chip(info->rtc_regmap, info->rtc_irq,
- IRQF_TRIGGER_FALLING | IRQF_ONESHOT |
- IRQF_SHARED, 0, info->drv_data->rtc_irq_chip,
+ IRQF_ONESHOT | IRQF_SHARED,
+ 0, info->drv_data->rtc_irq_chip,
&info->rtc_irq_data);
if (ret < 0) {
dev_err(info->dev, "Failed to add RTC irq chip: %d\n", ret);
diff --git a/drivers/rtc/rtc-mxc_v2.c b/drivers/rtc/rtc-mxc_v2.c
index a577a74aaf75..5e0383401629 100644
--- a/drivers/rtc/rtc-mxc_v2.c
+++ b/drivers/rtc/rtc-mxc_v2.c
@@ -372,6 +372,7 @@ static const struct of_device_id mxc_ids[] = {
{ .compatible = "fsl,imx53-rtc", },
{}
};
+MODULE_DEVICE_TABLE(of, mxc_ids);
static struct platform_driver mxc_rtc_driver = {
.driver = {
diff --git a/drivers/rtc/rtc-palmas.c b/drivers/rtc/rtc-palmas.c
index 4bcfb88674d3..67571f7f0bbc 100644
--- a/drivers/rtc/rtc-palmas.c
+++ b/drivers/rtc/rtc-palmas.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* rtc-palmas.c -- Palmas Real Time Clock driver.
@@ -7,20 +8,6 @@
* Copyright (c) 2012, NVIDIA Corporation.
*
* Author: Laxman Dewangan <ldewangan@nvidia.com>
- *
- * 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 version 2.
- *
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
- * whether express or implied; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- * 02111-1307, USA
*/
#include <linux/bcd.h>
diff --git a/drivers/rtc/rtc-pcf2127.c b/drivers/rtc/rtc-pcf2127.c
index d13c20a2adf7..56c58b055dff 100644
--- a/drivers/rtc/rtc-pcf2127.c
+++ b/drivers/rtc/rtc-pcf2127.c
@@ -10,7 +10,7 @@
*
* based on the other drivers in this same directory.
*
- * Datasheet: http://cache.nxp.com/documents/data_sheet/PCF2127.pdf
+ * Datasheet: https://www.nxp.com/docs/en/data-sheet/PCF2127.pdf
*/
#include <linux/i2c.h>
@@ -94,10 +94,20 @@
#define PCF2127_WD_VAL_MAX 255
#define PCF2127_WD_VAL_DEFAULT 60
+/* Mask for currently enabled interrupts */
+#define PCF2127_CTRL1_IRQ_MASK (PCF2127_BIT_CTRL1_TSF1)
+#define PCF2127_CTRL2_IRQ_MASK ( \
+ PCF2127_BIT_CTRL2_AF | \
+ PCF2127_BIT_CTRL2_WDTF | \
+ PCF2127_BIT_CTRL2_TSF2)
+
struct pcf2127 {
struct rtc_device *rtc;
struct watchdog_device wdd;
struct regmap *regmap;
+ time64_t ts;
+ bool ts_valid;
+ bool irq_enabled;
};
/*
@@ -434,23 +444,96 @@ static int pcf2127_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
return pcf2127_rtc_alarm_irq_enable(dev, alrm->enabled);
}
+/*
+ * This function reads ctrl2 register, caller is responsible for calling
+ * pcf2127_wdt_active_ping()
+ */
+static int pcf2127_rtc_ts_read(struct device *dev, time64_t *ts)
+{
+ struct pcf2127 *pcf2127 = dev_get_drvdata(dev);
+ struct rtc_time tm;
+ int ret;
+ unsigned char data[25];
+
+ ret = regmap_bulk_read(pcf2127->regmap, PCF2127_REG_CTRL1, data,
+ sizeof(data));
+ if (ret) {
+ dev_err(dev, "%s: read error ret=%d\n", __func__, ret);
+ return ret;
+ }
+
+ dev_dbg(dev,
+ "%s: raw data is cr1=%02x, cr2=%02x, cr3=%02x, ts_sc=%02x, ts_mn=%02x, ts_hr=%02x, ts_dm=%02x, ts_mo=%02x, ts_yr=%02x\n",
+ __func__, data[PCF2127_REG_CTRL1], data[PCF2127_REG_CTRL2],
+ data[PCF2127_REG_CTRL3], data[PCF2127_REG_TS_SC],
+ data[PCF2127_REG_TS_MN], data[PCF2127_REG_TS_HR],
+ data[PCF2127_REG_TS_DM], data[PCF2127_REG_TS_MO],
+ data[PCF2127_REG_TS_YR]);
+
+ tm.tm_sec = bcd2bin(data[PCF2127_REG_TS_SC] & 0x7F);
+ tm.tm_min = bcd2bin(data[PCF2127_REG_TS_MN] & 0x7F);
+ tm.tm_hour = bcd2bin(data[PCF2127_REG_TS_HR] & 0x3F);
+ tm.tm_mday = bcd2bin(data[PCF2127_REG_TS_DM] & 0x3F);
+ /* TS_MO register (month) value range: 1-12 */
+ tm.tm_mon = bcd2bin(data[PCF2127_REG_TS_MO] & 0x1F) - 1;
+ tm.tm_year = bcd2bin(data[PCF2127_REG_TS_YR]);
+ if (tm.tm_year < 70)
+ tm.tm_year += 100; /* assume we are in 1970...2069 */
+
+ ret = rtc_valid_tm(&tm);
+ if (ret) {
+ dev_err(dev, "Invalid timestamp. ret=%d\n", ret);
+ return ret;
+ }
+
+ *ts = rtc_tm_to_time64(&tm);
+ return 0;
+};
+
+static void pcf2127_rtc_ts_snapshot(struct device *dev)
+{
+ struct pcf2127 *pcf2127 = dev_get_drvdata(dev);
+ int ret;
+
+ /* Let userspace read the first timestamp */
+ if (pcf2127->ts_valid)
+ return;
+
+ ret = pcf2127_rtc_ts_read(dev, &pcf2127->ts);
+ if (!ret)
+ pcf2127->ts_valid = true;
+}
+
static irqreturn_t pcf2127_rtc_irq(int irq, void *dev)
{
struct pcf2127 *pcf2127 = dev_get_drvdata(dev);
- unsigned int ctrl2 = 0;
+ unsigned int ctrl1, ctrl2;
int ret = 0;
+ ret = regmap_read(pcf2127->regmap, PCF2127_REG_CTRL1, &ctrl1);
+ if (ret)
+ return IRQ_NONE;
+
ret = regmap_read(pcf2127->regmap, PCF2127_REG_CTRL2, &ctrl2);
if (ret)
return IRQ_NONE;
- if (!(ctrl2 & PCF2127_BIT_CTRL2_AF))
+ if (!(ctrl1 & PCF2127_CTRL1_IRQ_MASK || ctrl2 & PCF2127_CTRL2_IRQ_MASK))
return IRQ_NONE;
- regmap_write(pcf2127->regmap, PCF2127_REG_CTRL2,
- ctrl2 & ~(PCF2127_BIT_CTRL2_AF | PCF2127_BIT_CTRL2_WDTF));
+ if (ctrl1 & PCF2127_BIT_CTRL1_TSF1 || ctrl2 & PCF2127_BIT_CTRL2_TSF2)
+ pcf2127_rtc_ts_snapshot(dev);
+
+ if (ctrl1 & PCF2127_CTRL1_IRQ_MASK)
+ regmap_write(pcf2127->regmap, PCF2127_REG_CTRL1,
+ ctrl1 & ~PCF2127_CTRL1_IRQ_MASK);
+
+ if (ctrl2 & PCF2127_CTRL2_IRQ_MASK)
+ regmap_write(pcf2127->regmap, PCF2127_REG_CTRL2,
+ ctrl2 & ~PCF2127_CTRL2_IRQ_MASK);
- rtc_update_irq(pcf2127->rtc, 1, RTC_IRQF | RTC_AF);
+ if (ctrl2 & PCF2127_BIT_CTRL2_AF)
+ rtc_update_irq(pcf2127->rtc, 1, RTC_IRQF | RTC_AF);
pcf2127_wdt_active_ping(&pcf2127->wdd);
@@ -475,23 +558,27 @@ static ssize_t timestamp0_store(struct device *dev,
struct pcf2127 *pcf2127 = dev_get_drvdata(dev->parent);
int ret;
- ret = regmap_update_bits(pcf2127->regmap, PCF2127_REG_CTRL1,
- PCF2127_BIT_CTRL1_TSF1, 0);
- if (ret) {
- dev_err(dev, "%s: update ctrl1 ret=%d\n", __func__, ret);
- return ret;
- }
+ if (pcf2127->irq_enabled) {
+ pcf2127->ts_valid = false;
+ } else {
+ ret = regmap_update_bits(pcf2127->regmap, PCF2127_REG_CTRL1,
+ PCF2127_BIT_CTRL1_TSF1, 0);
+ if (ret) {
+ dev_err(dev, "%s: update ctrl1 ret=%d\n", __func__, ret);
+ return ret;
+ }
- ret = regmap_update_bits(pcf2127->regmap, PCF2127_REG_CTRL2,
- PCF2127_BIT_CTRL2_TSF2, 0);
- if (ret) {
- dev_err(dev, "%s: update ctrl2 ret=%d\n", __func__, ret);
- return ret;
- }
+ ret = regmap_update_bits(pcf2127->regmap, PCF2127_REG_CTRL2,
+ PCF2127_BIT_CTRL2_TSF2, 0);
+ if (ret) {
+ dev_err(dev, "%s: update ctrl2 ret=%d\n", __func__, ret);
+ return ret;
+ }
- ret = pcf2127_wdt_active_ping(&pcf2127->wdd);
- if (ret)
- return ret;
+ ret = pcf2127_wdt_active_ping(&pcf2127->wdd);
+ if (ret)
+ return ret;
+ }
return count;
};
@@ -500,50 +587,36 @@ static ssize_t timestamp0_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct pcf2127 *pcf2127 = dev_get_drvdata(dev->parent);
- struct rtc_time tm;
+ unsigned int ctrl1, ctrl2;
int ret;
- unsigned char data[25];
-
- ret = regmap_bulk_read(pcf2127->regmap, PCF2127_REG_CTRL1, data,
- sizeof(data));
- if (ret) {
- dev_err(dev, "%s: read error ret=%d\n", __func__, ret);
- return ret;
- }
-
- dev_dbg(dev,
- "%s: raw data is cr1=%02x, cr2=%02x, cr3=%02x, ts_sc=%02x, "
- "ts_mn=%02x, ts_hr=%02x, ts_dm=%02x, ts_mo=%02x, ts_yr=%02x\n",
- __func__, data[PCF2127_REG_CTRL1], data[PCF2127_REG_CTRL2],
- data[PCF2127_REG_CTRL3], data[PCF2127_REG_TS_SC],
- data[PCF2127_REG_TS_MN], data[PCF2127_REG_TS_HR],
- data[PCF2127_REG_TS_DM], data[PCF2127_REG_TS_MO],
- data[PCF2127_REG_TS_YR]);
+ time64_t ts;
+
+ if (pcf2127->irq_enabled) {
+ if (!pcf2127->ts_valid)
+ return 0;
+ ts = pcf2127->ts;
+ } else {
+ ret = regmap_read(pcf2127->regmap, PCF2127_REG_CTRL1, &ctrl1);
+ if (ret)
+ return 0;
- ret = pcf2127_wdt_active_ping(&pcf2127->wdd);
- if (ret)
- return ret;
+ ret = regmap_read(pcf2127->regmap, PCF2127_REG_CTRL2, &ctrl2);
+ if (ret)
+ return 0;
- if (!(data[PCF2127_REG_CTRL1] & PCF2127_BIT_CTRL1_TSF1) &&
- !(data[PCF2127_REG_CTRL2] & PCF2127_BIT_CTRL2_TSF2))
- return 0;
+ if (!(ctrl1 & PCF2127_BIT_CTRL1_TSF1) &&
+ !(ctrl2 & PCF2127_BIT_CTRL2_TSF2))
+ return 0;
- tm.tm_sec = bcd2bin(data[PCF2127_REG_TS_SC] & 0x7F);
- tm.tm_min = bcd2bin(data[PCF2127_REG_TS_MN] & 0x7F);
- tm.tm_hour = bcd2bin(data[PCF2127_REG_TS_HR] & 0x3F);
- tm.tm_mday = bcd2bin(data[PCF2127_REG_TS_DM] & 0x3F);
- /* TS_MO register (month) value range: 1-12 */
- tm.tm_mon = bcd2bin(data[PCF2127_REG_TS_MO] & 0x1F) - 1;
- tm.tm_year = bcd2bin(data[PCF2127_REG_TS_YR]);
- if (tm.tm_year < 70)
- tm.tm_year += 100; /* assume we are in 1970...2069 */
-
- ret = rtc_valid_tm(&tm);
- if (ret)
- return ret;
+ ret = pcf2127_rtc_ts_read(dev->parent, &ts);
+ if (ret)
+ return 0;
- return sprintf(buf, "%llu\n",
- (unsigned long long)rtc_tm_to_time64(&tm));
+ ret = pcf2127_wdt_active_ping(&pcf2127->wdd);
+ if (ret)
+ return ret;
+ }
+ return sprintf(buf, "%llu\n", (unsigned long long)ts);
};
static DEVICE_ATTR_RW(timestamp0);
@@ -594,6 +667,7 @@ static int pcf2127_probe(struct device *dev, struct regmap *regmap,
dev_err(dev, "failed to request alarm irq\n");
return ret;
}
+ pcf2127->irq_enabled = true;
}
if (alarm_irq > 0 || device_property_read_bool(dev, "wakeup-source")) {
diff --git a/drivers/rtc/rtc-pcf85063.c b/drivers/rtc/rtc-pcf85063.c
index 82becae14229..14da4ab30104 100644
--- a/drivers/rtc/rtc-pcf85063.c
+++ b/drivers/rtc/rtc-pcf85063.c
@@ -21,10 +21,10 @@
/*
* Information for this driver was pulled from the following datasheets.
*
- * https://www.nxp.com/documents/data_sheet/PCF85063A.pdf
- * https://www.nxp.com/documents/data_sheet/PCF85063TP.pdf
+ * https://www.nxp.com/docs/en/data-sheet/PCF85063A.pdf
+ * https://www.nxp.com/docs/en/data-sheet/PCF85063TP.pdf
*
- * PCF85063A -- Rev. 6 — 18 November 2015
+ * PCF85063A -- Rev. 7 — 30 March 2018
* PCF85063TP -- Rev. 4 — 6 May 2015
*
* https://www.microcrystal.com/fileadmin/Media/Products/RTC/App.Manual/RV-8263-C7_App-Manual.pdf
diff --git a/drivers/rtc/rtc-pcf8523.c b/drivers/rtc/rtc-pcf8523.c
index 740e2136ca98..8b6fb20774bf 100644
--- a/drivers/rtc/rtc-pcf8523.c
+++ b/drivers/rtc/rtc-pcf8523.c
@@ -10,41 +10,41 @@
#include <linux/of.h>
#include <linux/pm_wakeirq.h>
-#define REG_CONTROL1 0x00
-#define REG_CONTROL1_CAP_SEL BIT(7)
-#define REG_CONTROL1_STOP BIT(5)
-#define REG_CONTROL1_AIE BIT(1)
-
-#define REG_CONTROL2 0x01
-#define REG_CONTROL2_AF BIT(3)
-
-#define REG_CONTROL3 0x02
-#define REG_CONTROL3_PM_BLD BIT(7) /* battery low detection disabled */
-#define REG_CONTROL3_PM_VDD BIT(6) /* switch-over disabled */
-#define REG_CONTROL3_PM_DSM BIT(5) /* direct switching mode */
-#define REG_CONTROL3_PM_MASK 0xe0
-#define REG_CONTROL3_BLF BIT(2) /* battery low bit, read-only */
-
-#define REG_SECONDS 0x03
-#define REG_SECONDS_OS BIT(7)
-
-#define REG_MINUTES 0x04
-#define REG_HOURS 0x05
-#define REG_DAYS 0x06
-#define REG_WEEKDAYS 0x07
-#define REG_MONTHS 0x08
-#define REG_YEARS 0x09
-
-#define REG_MINUTE_ALARM 0x0a
-#define REG_HOUR_ALARM 0x0b
-#define REG_DAY_ALARM 0x0c
-#define REG_WEEKDAY_ALARM 0x0d
+#define PCF8523_REG_CONTROL1 0x00
+#define PCF8523_CONTROL1_CAP_SEL BIT(7)
+#define PCF8523_CONTROL1_STOP BIT(5)
+#define PCF8523_CONTROL1_AIE BIT(1)
+
+#define PCF8523_REG_CONTROL2 0x01
+#define PCF8523_CONTROL2_AF BIT(3)
+
+#define PCF8523_REG_CONTROL3 0x02
+#define PCF8523_CONTROL3_PM_BLD BIT(7) /* battery low detection disabled */
+#define PCF8523_CONTROL3_PM_VDD BIT(6) /* switch-over disabled */
+#define PCF8523_CONTROL3_PM_DSM BIT(5) /* direct switching mode */
+#define PCF8523_CONTROL3_PM_MASK 0xe0
+#define PCF8523_CONTROL3_BLF BIT(2) /* battery low bit, read-only */
+
+#define PCF8523_REG_SECONDS 0x03
+#define PCF8523_SECONDS_OS BIT(7)
+
+#define PCF8523_REG_MINUTES 0x04
+#define PCF8523_REG_HOURS 0x05
+#define PCF8523_REG_DAYS 0x06
+#define PCF8523_REG_WEEKDAYS 0x07
+#define PCF8523_REG_MONTHS 0x08
+#define PCF8523_REG_YEARS 0x09
+
+#define PCF8523_REG_MINUTE_ALARM 0x0a
+#define PCF8523_REG_HOUR_ALARM 0x0b
+#define PCF8523_REG_DAY_ALARM 0x0c
+#define PCF8523_REG_WEEKDAY_ALARM 0x0d
#define ALARM_DIS BIT(7)
-#define REG_OFFSET 0x0e
-#define REG_OFFSET_MODE BIT(7)
+#define PCF8523_REG_OFFSET 0x0e
+#define PCF8523_OFFSET_MODE BIT(7)
-#define REG_TMR_CLKOUT_CTRL 0x0f
+#define PCF8523_TMR_CLKOUT_CTRL 0x0f
struct pcf8523 {
struct rtc_device *rtc;
@@ -99,11 +99,11 @@ static int pcf8523_voltage_low(struct i2c_client *client)
u8 value;
int err;
- err = pcf8523_read(client, REG_CONTROL3, &value);
+ err = pcf8523_read(client, PCF8523_REG_CONTROL3, &value);
if (err < 0)
return err;
- return !!(value & REG_CONTROL3_BLF);
+ return !!(value & PCF8523_CONTROL3_BLF);
}
static int pcf8523_load_capacitance(struct i2c_client *client)
@@ -112,7 +112,7 @@ static int pcf8523_load_capacitance(struct i2c_client *client)
u8 value;
int err;
- err = pcf8523_read(client, REG_CONTROL1, &value);
+ err = pcf8523_read(client, PCF8523_REG_CONTROL1, &value);
if (err < 0)
return err;
@@ -126,14 +126,14 @@ static int pcf8523_load_capacitance(struct i2c_client *client)
load);
fallthrough;
case 12500:
- value |= REG_CONTROL1_CAP_SEL;
+ value |= PCF8523_CONTROL1_CAP_SEL;
break;
case 7000:
- value &= ~REG_CONTROL1_CAP_SEL;
+ value &= ~PCF8523_CONTROL1_CAP_SEL;
break;
}
- err = pcf8523_write(client, REG_CONTROL1, value);
+ err = pcf8523_write(client, PCF8523_REG_CONTROL1, value);
return err;
}
@@ -143,13 +143,13 @@ static int pcf8523_set_pm(struct i2c_client *client, u8 pm)
u8 value;
int err;
- err = pcf8523_read(client, REG_CONTROL3, &value);
+ err = pcf8523_read(client, PCF8523_REG_CONTROL3, &value);
if (err < 0)
return err;
- value = (value & ~REG_CONTROL3_PM_MASK) | pm;
+ value = (value & ~PCF8523_CONTROL3_PM_MASK) | pm;
- err = pcf8523_write(client, REG_CONTROL3, value);
+ err = pcf8523_write(client, PCF8523_REG_CONTROL3, value);
if (err < 0)
return err;
@@ -162,13 +162,13 @@ static irqreturn_t pcf8523_irq(int irq, void *dev_id)
u8 value;
int err;
- err = pcf8523_read(pcf8523->client, REG_CONTROL2, &value);
+ err = pcf8523_read(pcf8523->client, PCF8523_REG_CONTROL2, &value);
if (err < 0)
return IRQ_HANDLED;
- if (value & REG_CONTROL2_AF) {
- value &= ~REG_CONTROL2_AF;
- pcf8523_write(pcf8523->client, REG_CONTROL2, value);
+ if (value & PCF8523_CONTROL2_AF) {
+ value &= ~PCF8523_CONTROL2_AF;
+ pcf8523_write(pcf8523->client, PCF8523_REG_CONTROL2, value);
rtc_update_irq(pcf8523->rtc, 1, RTC_IRQF | RTC_AF);
return IRQ_HANDLED;
@@ -182,13 +182,13 @@ static int pcf8523_stop_rtc(struct i2c_client *client)
u8 value;
int err;
- err = pcf8523_read(client, REG_CONTROL1, &value);
+ err = pcf8523_read(client, PCF8523_REG_CONTROL1, &value);
if (err < 0)
return err;
- value |= REG_CONTROL1_STOP;
+ value |= PCF8523_CONTROL1_STOP;
- err = pcf8523_write(client, REG_CONTROL1, value);
+ err = pcf8523_write(client, PCF8523_REG_CONTROL1, value);
if (err < 0)
return err;
@@ -200,13 +200,13 @@ static int pcf8523_start_rtc(struct i2c_client *client)
u8 value;
int err;
- err = pcf8523_read(client, REG_CONTROL1, &value);
+ err = pcf8523_read(client, PCF8523_REG_CONTROL1, &value);
if (err < 0)
return err;
- value &= ~REG_CONTROL1_STOP;
+ value &= ~PCF8523_CONTROL1_STOP;
- err = pcf8523_write(client, REG_CONTROL1, value);
+ err = pcf8523_write(client, PCF8523_REG_CONTROL1, value);
if (err < 0)
return err;
@@ -216,7 +216,7 @@ static int pcf8523_start_rtc(struct i2c_client *client)
static int pcf8523_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
struct i2c_client *client = to_i2c_client(dev);
- u8 start = REG_SECONDS, regs[7];
+ u8 start = PCF8523_REG_SECONDS, regs[7];
struct i2c_msg msgs[2];
int err;
@@ -242,7 +242,7 @@ static int pcf8523_rtc_read_time(struct device *dev, struct rtc_time *tm)
if (err < 0)
return err;
- if (regs[0] & REG_SECONDS_OS)
+ if (regs[0] & PCF8523_SECONDS_OS)
return -EINVAL;
tm->tm_sec = bcd2bin(regs[0] & 0x7f);
@@ -267,8 +267,8 @@ static int pcf8523_rtc_set_time(struct device *dev, struct rtc_time *tm)
if (err < 0)
return err;
- regs[0] = REG_SECONDS;
- /* This will purposely overwrite REG_SECONDS_OS */
+ regs[0] = PCF8523_REG_SECONDS;
+ /* This will purposely overwrite PCF8523_SECONDS_OS */
regs[1] = bin2bcd(tm->tm_sec);
regs[2] = bin2bcd(tm->tm_min);
regs[3] = bin2bcd(tm->tm_hour);
@@ -299,7 +299,7 @@ static int pcf8523_rtc_set_time(struct device *dev, struct rtc_time *tm)
static int pcf8523_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *tm)
{
struct i2c_client *client = to_i2c_client(dev);
- u8 start = REG_MINUTE_ALARM, regs[4];
+ u8 start = PCF8523_REG_MINUTE_ALARM, regs[4];
struct i2c_msg msgs[2];
u8 value;
int err;
@@ -324,15 +324,15 @@ static int pcf8523_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *tm)
tm->time.tm_mday = bcd2bin(regs[2] & 0x3F);
tm->time.tm_wday = bcd2bin(regs[3] & 0x7);
- err = pcf8523_read(client, REG_CONTROL1, &value);
+ err = pcf8523_read(client, PCF8523_REG_CONTROL1, &value);
if (err < 0)
return err;
- tm->enabled = !!(value & REG_CONTROL1_AIE);
+ tm->enabled = !!(value & PCF8523_CONTROL1_AIE);
- err = pcf8523_read(client, REG_CONTROL2, &value);
+ err = pcf8523_read(client, PCF8523_REG_CONTROL2, &value);
if (err < 0)
return err;
- tm->pending = !!(value & REG_CONTROL2_AF);
+ tm->pending = !!(value & PCF8523_CONTROL2_AF);
return 0;
}
@@ -343,16 +343,16 @@ static int pcf8523_irq_enable(struct device *dev, unsigned int enabled)
u8 value;
int err;
- err = pcf8523_read(client, REG_CONTROL1, &value);
+ err = pcf8523_read(client, PCF8523_REG_CONTROL1, &value);
if (err < 0)
return err;
- value &= REG_CONTROL1_AIE;
+ value &= PCF8523_CONTROL1_AIE;
if (enabled)
- value |= REG_CONTROL1_AIE;
+ value |= PCF8523_CONTROL1_AIE;
- err = pcf8523_write(client, REG_CONTROL1, value);
+ err = pcf8523_write(client, PCF8523_REG_CONTROL1, value);
if (err < 0)
return err;
@@ -370,7 +370,7 @@ static int pcf8523_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *tm)
if (err)
return err;
- err = pcf8523_write(client, REG_CONTROL2, 0);
+ err = pcf8523_write(client, PCF8523_REG_CONTROL2, 0);
if (err < 0)
return err;
@@ -382,7 +382,7 @@ static int pcf8523_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *tm)
rtc_time64_to_tm(alarm_time, &tm->time);
}
- regs[0] = REG_MINUTE_ALARM;
+ regs[0] = PCF8523_REG_MINUTE_ALARM;
regs[1] = bin2bcd(tm->time.tm_min);
regs[2] = bin2bcd(tm->time.tm_hour);
regs[3] = bin2bcd(tm->time.tm_mday);
@@ -418,11 +418,11 @@ static int pcf8523_rtc_ioctl(struct device *dev, unsigned int cmd,
if (ret)
flags |= RTC_VL_BACKUP_LOW;
- ret = pcf8523_read(client, REG_SECONDS, &value);
+ ret = pcf8523_read(client, PCF8523_REG_SECONDS, &value);
if (ret < 0)
return ret;
- if (value & REG_SECONDS_OS)
+ if (value & PCF8523_SECONDS_OS)
flags |= RTC_VL_DATA_INVALID;
return put_user(flags, (unsigned int __user *)arg);
@@ -442,13 +442,13 @@ static int pcf8523_rtc_read_offset(struct device *dev, long *offset)
u8 value;
s8 val;
- err = pcf8523_read(client, REG_OFFSET, &value);
+ err = pcf8523_read(client, PCF8523_REG_OFFSET, &value);
if (err < 0)
return err;
/* sign extend the 7-bit offset value */
val = value << 1;
- *offset = (value & REG_OFFSET_MODE ? 4069 : 4340) * (val >> 1);
+ *offset = (value & PCF8523_OFFSET_MODE ? 4069 : 4340) * (val >> 1);
return 0;
}
@@ -465,9 +465,9 @@ static int pcf8523_rtc_set_offset(struct device *dev, long offset)
if (abs(reg_m0 * 4340 - offset) < abs(reg_m1 * 4069 - offset))
value = reg_m0 & 0x7f;
else
- value = (reg_m1 & 0x7f) | REG_OFFSET_MODE;
+ value = (reg_m1 & 0x7f) | PCF8523_OFFSET_MODE;
- return pcf8523_write(client, REG_OFFSET, value);
+ return pcf8523_write(client, PCF8523_REG_OFFSET, value);
}
static const struct rtc_class_ops pcf8523_rtc_ops = {
@@ -519,7 +519,7 @@ static int pcf8523_probe(struct i2c_client *client,
rtc->uie_unsupported = 1;
if (client->irq > 0) {
- err = pcf8523_write(client, REG_TMR_CLKOUT_CTRL, 0x38);
+ err = pcf8523_write(client, PCF8523_TMR_CLKOUT_CTRL, 0x38);
if (err < 0)
return err;
diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c
index 18f12f36eb2b..c8bddfb94129 100644
--- a/drivers/rtc/rtc-pcf8563.c
+++ b/drivers/rtc/rtc-pcf8563.c
@@ -8,7 +8,7 @@
*
* based on the other drivers in this same directory.
*
- * http://www.semiconductors.philips.com/acrobat/datasheets/PCF8563-04.pdf
+ * https://www.nxp.com/docs/en/data-sheet/PCF8563.pdf
*/
#include <linux/clk-provider.h>
diff --git a/drivers/rtc/rtc-rtd119x.c b/drivers/rtc/rtc-rtd119x.c
index bb98f2d574a5..8f9abd65846c 100644
--- a/drivers/rtc/rtc-rtd119x.c
+++ b/drivers/rtc/rtc-rtd119x.c
@@ -1,9 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
/*
* Realtek RTD129x RTC
*
* Copyright (c) 2017 Andreas Färber
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <linux/clk.h>
diff --git a/drivers/rtc/rtc-s5m.c b/drivers/rtc/rtc-s5m.c
index 038269a6b08c..6b56f8eacba6 100644
--- a/drivers/rtc/rtc-s5m.c
+++ b/drivers/rtc/rtc-s5m.c
@@ -488,9 +488,7 @@ static int s5m_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
dev_dbg(dev, "%s: %ptR(%d)\n", __func__, &alrm->time, alrm->time.tm_wday);
- ret = s5m_check_peding_alarm_interrupt(info, alrm);
-
- return 0;
+ return s5m_check_peding_alarm_interrupt(info, alrm);
}
static int s5m_rtc_stop_alarm(struct s5m_rtc_info *info)
diff --git a/drivers/rtc/rtc-sc27xx.c b/drivers/rtc/rtc-sc27xx.c
index 187aa955b79c..ce7a2ddbbc16 100644
--- a/drivers/rtc/rtc-sc27xx.c
+++ b/drivers/rtc/rtc-sc27xx.c
@@ -1,7 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2017 Spreadtrum Communications Inc.
*
- * SPDX-License-Identifier: GPL-2.0
*/
#include <linux/bitops.h>
diff --git a/drivers/rtc/rtc-spear.c b/drivers/rtc/rtc-spear.c
index ee721e53c155..b4a520056b1a 100644
--- a/drivers/rtc/rtc-spear.c
+++ b/drivers/rtc/rtc-spear.c
@@ -1,12 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* drivers/rtc/rtc-spear.c
*
* Copyright (C) 2010 ST Microelectronics
* Rajeev Kumar<rajeev-dlh.kumar@st.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
*/
#include <linux/bcd.h>
diff --git a/drivers/rtc/rtc-stm32.c b/drivers/rtc/rtc-stm32.c
index 75a8924ba12b..ac9e228b56d0 100644
--- a/drivers/rtc/rtc-stm32.c
+++ b/drivers/rtc/rtc-stm32.c
@@ -754,7 +754,7 @@ static int stm32_rtc_probe(struct platform_device *pdev)
ret = clk_prepare_enable(rtc->rtc_ck);
if (ret)
- goto err;
+ goto err_no_rtc_ck;
if (rtc->data->need_dbp)
regmap_update_bits(rtc->dbp, rtc->dbp_reg,
@@ -830,10 +830,12 @@ static int stm32_rtc_probe(struct platform_device *pdev)
}
return 0;
+
err:
+ clk_disable_unprepare(rtc->rtc_ck);
+err_no_rtc_ck:
if (rtc->data->has_pclk)
clk_disable_unprepare(rtc->pclk);
- clk_disable_unprepare(rtc->rtc_ck);
if (rtc->data->need_dbp)
regmap_update_bits(rtc->dbp, rtc->dbp_reg, rtc->dbp_mask, 0);
diff --git a/drivers/rtc/rtc-tps6586x.c b/drivers/rtc/rtc-tps6586x.c
index a980337c3065..52093e7ba22d 100644
--- a/drivers/rtc/rtc-tps6586x.c
+++ b/drivers/rtc/rtc-tps6586x.c
@@ -1,23 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* rtc-tps6586x.c: RTC driver for TI PMIC TPS6586X
*
* Copyright (c) 2012, NVIDIA Corporation.
*
* Author: Laxman Dewangan <ldewangan@nvidia.com>
- *
- * 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 version 2.
- *
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
- * whether express or implied; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- * 02111-1307, USA
*/
#include <linux/device.h>
diff --git a/drivers/rtc/rtc-tps80031.c b/drivers/rtc/rtc-tps80031.c
index 737f26eb284a..c77b8eab94a0 100644
--- a/drivers/rtc/rtc-tps80031.c
+++ b/drivers/rtc/rtc-tps80031.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* rtc-tps80031.c -- TI TPS80031/TPS80032 RTC driver
*
@@ -7,20 +8,6 @@
* Copyright (c) 2012, NVIDIA Corporation.
*
* Author: Laxman Dewangan <ldewangan@nvidia.com>
- *
- * 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 version 2.
- *
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
- * whether express or implied; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- * 02111-1307, USA
*/
#include <linux/bcd.h>
diff --git a/drivers/rtc/rtc-v3020.c b/drivers/rtc/rtc-v3020.c
index d2da92187d56..4e8341c49f51 100644
--- a/drivers/rtc/rtc-v3020.c
+++ b/drivers/rtc/rtc-v3020.c
@@ -282,7 +282,7 @@ static int rtc_probe(struct platform_device *pdev)
{
struct v3020_platform_data *pdata = dev_get_platdata(&pdev->dev);
struct v3020 *chip;
- int retval = -EBUSY;
+ int retval;
int i;
chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);
diff --git a/drivers/rtc/sysfs.c b/drivers/rtc/sysfs.c
index 74026f67fdfb..00f1945bcb7e 100644
--- a/drivers/rtc/sysfs.c
+++ b/drivers/rtc/sysfs.c
@@ -102,7 +102,7 @@ max_user_freq_store(struct device *dev, struct device_attribute *attr,
static DEVICE_ATTR_RW(max_user_freq);
/**
- * rtc_sysfs_show_hctosys - indicate if the given RTC set the system time
+ * hctosys_show - indicate if the given RTC set the system time
* @dev: The device that the attribute belongs to.
* @attr: The attribute being read.
* @buf: The result buffer.
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-24 17:26:02 +0300