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authorLinus Torvalds <torvalds@linux-foundation.org>2015-11-10 10:01:21 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-11-10 10:01:21 -0800
commit7d884710bb3635f94dac152ae226ca54a585a223 (patch)
treeb38909954296f90a954264d1c3be4d597b67d5d4 /drivers/rtc
parent3b13866869b8407497d20a916450594e117583e6 (diff)
parent1e3929ef0e1c4c7127b785ce7a236965b3739406 (diff)
Merge tag 'rtc-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
Pull RTC updates from Alexandre Belloni: "Core: - Fix rtctest error path New drivers: - Microcrystal RV8803 Subsystem wide cleanups: - remove misuse of IRQF_NO_SUSPEND flag Drivers: - at91rm9200: clear RTC alarm status flag prior to suspending - davinci: remove incorrect reference to probe function - ds1307: Fix alarm programming for mcp794xx - ds1390: trickle charger support, fix ds1390_get_reg - isl1208: Pass the IRQF_ONESHOT flag - opal: fix type of token - pcf2127: fix RTC_READ_VL, remove useless driver version - pcf85063: return an error when date is invalid - pcf8563: add CLKOUT to common clock framework - rx8025: remove unnecessary braces - s3c: Set year, month, day value for setting alarm - stmp3xxx: unify register access macros - License fixes: pcf2127, da9063 - wakeup-source support for isl12057 and opal" * tag 'rtc-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (23 commits) rtc: Add a driver for Micro Crystal RV8803 rtc: s3c: Set year, month, day value for setting alarm rtc: ds1307: Fix alarm programming for mcp794xx rtc: isl12057: enable support for the standard "wakeup-source" property rtc: opal: enable support for the stardard "wakeup-source" property rtc: isl1208: Pass the IRQF_ONESHOT flag rtc: pcf8563: add CLKOUT to common clock framework rtc: davinci: remove incorrect reference to probe function rtc: at91rm9200: clear RTC alarm status flag prior to suspending rtc: pcf2127: remove useless driver version rtc: pcf2127: fix reading uninitialized value on RTC_READ_VL ioctl rtc: stmp3xxx: unify register access macros rtc: da9063: GPL copyright inconsistency fix rtc: pcf85063: return an error when date is invalid rtc: rx8025: remove unnecessary braces rtc: ds1343: remove misuse of IRQF_NO_SUSPEND flag rtc: ab8500: remove misuse of IRQF_NO_SUSPEND flag rtc: pl031: remove misuse of IRQF_NO_SUSPEND flag rtc: opal: fix type of token rtc: ds1390: Add trickle charger device tree binding ...
Diffstat (limited to 'drivers/rtc')
-rw-r--r--drivers/rtc/Kconfig13
-rw-r--r--drivers/rtc/Makefile1
-rw-r--r--drivers/rtc/rtc-ab8500.c6
-rw-r--r--drivers/rtc/rtc-at91rm9200.c2
-rw-r--r--drivers/rtc/rtc-da9063.c18
-rw-r--r--drivers/rtc/rtc-davinci.c1
-rw-r--r--drivers/rtc/rtc-ds1307.c4
-rw-r--r--drivers/rtc/rtc-ds1343.c9
-rw-r--r--drivers/rtc/rtc-ds1390.c65
-rw-r--r--drivers/rtc/rtc-isl12057.c10
-rw-r--r--drivers/rtc/rtc-isl1208.c2
-rw-r--r--drivers/rtc/rtc-opal.c9
-rw-r--r--drivers/rtc/rtc-pcf2127.c47
-rw-r--r--drivers/rtc/rtc-pcf85063.c8
-rw-r--r--drivers/rtc/rtc-pcf8563.c170
-rw-r--r--drivers/rtc/rtc-pl031.c13
-rw-r--r--drivers/rtc/rtc-rv8803.c521
-rw-r--r--drivers/rtc/rtc-rx8025.c4
-rw-r--r--drivers/rtc/rtc-s3c.c16
-rw-r--r--drivers/rtc/rtc-stmp3xxx.c27
20 files changed, 864 insertions, 82 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 9d4290617cee..2a524244afec 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -593,6 +593,15 @@ config RTC_DRV_RV3029C2
This driver can also be built as a module. If so, the module
will be called rtc-rv3029c2.
+config RTC_DRV_RV8803
+ tristate "Micro Crystal RV8803"
+ help
+ If you say yes here you get support for the Micro Crystal
+ RV8803 RTC chips.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-rv8803.
+
config RTC_DRV_S5M
tristate "Samsung S2M/S5M series"
depends on MFD_SEC_CORE
@@ -666,8 +675,8 @@ config RTC_DRV_DS1390
If you say yes here you get support for the
Dallas/Maxim DS1390/93/94 chips.
- This driver only supports the RTC feature, and not other chip
- features such as alarms and trickle charging.
+ This driver supports the RTC feature and trickle charging but not
+ other chip features such as alarms.
This driver can also be built as a module. If so, the module
will be called rtc-ds1390.
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index e491eb524434..231f76451615 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -126,6 +126,7 @@ obj-$(CONFIG_RTC_DRV_RS5C313) += rtc-rs5c313.o
obj-$(CONFIG_RTC_DRV_RS5C348) += rtc-rs5c348.o
obj-$(CONFIG_RTC_DRV_RS5C372) += rtc-rs5c372.o
obj-$(CONFIG_RTC_DRV_RV3029C2) += rtc-rv3029c2.o
+obj-$(CONFIG_RTC_DRV_RV8803) += rtc-rv8803.o
obj-$(CONFIG_RTC_DRV_RX4581) += rtc-rx4581.o
obj-$(CONFIG_RTC_DRV_RX8025) += rtc-rx8025.o
obj-$(CONFIG_RTC_DRV_RX8581) += rtc-rx8581.o
diff --git a/drivers/rtc/rtc-ab8500.c b/drivers/rtc/rtc-ab8500.c
index 51407c4c7bd2..24a0af650a1b 100644
--- a/drivers/rtc/rtc-ab8500.c
+++ b/drivers/rtc/rtc-ab8500.c
@@ -18,6 +18,7 @@
#include <linux/mfd/abx500/ab8500.h>
#include <linux/delay.h>
#include <linux/of.h>
+#include <linux/pm_wakeirq.h>
#define AB8500_RTC_SOFF_STAT_REG 0x00
#define AB8500_RTC_CC_CONF_REG 0x01
@@ -493,11 +494,12 @@ static int ab8500_rtc_probe(struct platform_device *pdev)
}
err = devm_request_threaded_irq(&pdev->dev, irq, NULL,
- rtc_alarm_handler, IRQF_NO_SUSPEND | IRQF_ONESHOT,
+ rtc_alarm_handler, IRQF_ONESHOT,
"ab8500-rtc", rtc);
if (err < 0)
return err;
+ dev_pm_set_wake_irq(&pdev->dev, irq);
platform_set_drvdata(pdev, rtc);
err = ab8500_sysfs_rtc_register(&pdev->dev);
@@ -513,6 +515,8 @@ static int ab8500_rtc_probe(struct platform_device *pdev)
static int ab8500_rtc_remove(struct platform_device *pdev)
{
+ dev_pm_clear_wake_irq(&pdev->dev);
+ device_init_wakeup(&pdev->dev, false);
ab8500_sysfs_rtc_unregister(&pdev->dev);
return 0;
diff --git a/drivers/rtc/rtc-at91rm9200.c b/drivers/rtc/rtc-at91rm9200.c
index cb62e214b52a..b60fd477778f 100644
--- a/drivers/rtc/rtc-at91rm9200.c
+++ b/drivers/rtc/rtc-at91rm9200.c
@@ -495,6 +495,8 @@ static int at91_rtc_suspend(struct device *dev)
/* this IRQ is shared with DBGU and other hardware which isn't
* necessarily doing PM like we are...
*/
+ at91_rtc_write(AT91_RTC_SCCR, AT91_RTC_ALARM);
+
at91_rtc_imr = at91_rtc_read_imr()
& (AT91_RTC_ALARM|AT91_RTC_SECEV);
if (at91_rtc_imr) {
diff --git a/drivers/rtc/rtc-da9063.c b/drivers/rtc/rtc-da9063.c
index 00a8f7f4f87c..284b587da65c 100644
--- a/drivers/rtc/rtc-da9063.c
+++ b/drivers/rtc/rtc-da9063.c
@@ -1,15 +1,15 @@
/* rtc-da9063.c - Real time clock device driver for DA9063
- * Copyright (C) 2013-14 Dialog Semiconductor Ltd.
+ * Copyright (C) 2013-2015 Dialog Semiconductor Ltd.
*
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * 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.
*
- * This library is distributed in the hope that it will be useful,
+ * This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
*/
#include <linux/delay.h>
@@ -516,5 +516,5 @@ module_platform_driver(da9063_rtc_driver);
MODULE_AUTHOR("S Twiss <stwiss.opensource@diasemi.com>");
MODULE_DESCRIPTION("Real time clock device driver for Dialog DA9063");
-MODULE_LICENSE("GPL v2");
+MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:" DA9063_DRVNAME_RTC);
diff --git a/drivers/rtc/rtc-davinci.c b/drivers/rtc/rtc-davinci.c
index c84f46168a52..c5432bf64e1c 100644
--- a/drivers/rtc/rtc-davinci.c
+++ b/drivers/rtc/rtc-davinci.c
@@ -546,7 +546,6 @@ static int __exit davinci_rtc_remove(struct platform_device *pdev)
}
static struct platform_driver davinci_rtc_driver = {
- .probe = davinci_rtc_probe,
.remove = __exit_p(davinci_rtc_remove),
.driver = {
.name = "rtc_davinci",
diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c
index a705e6490808..188006c55ce0 100644
--- a/drivers/rtc/rtc-ds1307.c
+++ b/drivers/rtc/rtc-ds1307.c
@@ -718,9 +718,9 @@ static int mcp794xx_set_alarm(struct device *dev, struct rtc_wkalrm *t)
regs[3] = bin2bcd(t->time.tm_sec);
regs[4] = bin2bcd(t->time.tm_min);
regs[5] = bin2bcd(t->time.tm_hour);
- regs[6] = bin2bcd(t->time.tm_wday) + 1;
+ regs[6] = bin2bcd(t->time.tm_wday + 1);
regs[7] = bin2bcd(t->time.tm_mday);
- regs[8] = bin2bcd(t->time.tm_mon) + 1;
+ regs[8] = bin2bcd(t->time.tm_mon + 1);
/* Clear the alarm 0 interrupt flag. */
regs[6] &= ~MCP794XX_BIT_ALMX_IF;
diff --git a/drivers/rtc/rtc-ds1343.c b/drivers/rtc/rtc-ds1343.c
index 07371a9e3793..3d389bd8a289 100644
--- a/drivers/rtc/rtc-ds1343.c
+++ b/drivers/rtc/rtc-ds1343.c
@@ -21,6 +21,7 @@
#include <linux/rtc.h>
#include <linux/bcd.h>
#include <linux/pm.h>
+#include <linux/pm_wakeirq.h>
#include <linux/slab.h>
#define DS1343_DRV_VERSION "01.00"
@@ -663,15 +664,15 @@ static int ds1343_probe(struct spi_device *spi)
if (priv->irq >= 0) {
res = devm_request_threaded_irq(&spi->dev, spi->irq, NULL,
- ds1343_thread,
- IRQF_NO_SUSPEND | IRQF_ONESHOT,
+ ds1343_thread, IRQF_ONESHOT,
"ds1343", priv);
if (res) {
priv->irq = -1;
dev_err(&spi->dev,
"unable to request irq for rtc ds1343\n");
} else {
- device_set_wakeup_capable(&spi->dev, 1);
+ device_init_wakeup(&spi->dev, true);
+ dev_pm_set_wake_irq(&spi->dev, spi->irq);
}
}
@@ -692,6 +693,8 @@ static int ds1343_remove(struct spi_device *spi)
priv->irqen &= ~RTC_AF;
mutex_unlock(&priv->mutex);
+ dev_pm_clear_wake_irq(&spi->dev);
+ device_init_wakeup(&spi->dev, false);
devm_free_irq(&spi->dev, spi->irq, priv);
}
diff --git a/drivers/rtc/rtc-ds1390.c b/drivers/rtc/rtc-ds1390.c
index 4c229c97ef97..aa0d2c6f1edc 100644
--- a/drivers/rtc/rtc-ds1390.c
+++ b/drivers/rtc/rtc-ds1390.c
@@ -20,6 +20,7 @@
#include <linux/spi/spi.h>
#include <linux/bcd.h>
#include <linux/slab.h>
+#include <linux/of.h>
#define DS1390_REG_100THS 0x00
#define DS1390_REG_SECONDS 0x01
@@ -40,11 +41,31 @@
#define DS1390_REG_STATUS 0x0E
#define DS1390_REG_TRICKLE 0x0F
+#define DS1390_TRICKLE_CHARGER_ENABLE 0xA0
+#define DS1390_TRICKLE_CHARGER_250_OHM 0x01
+#define DS1390_TRICKLE_CHARGER_2K_OHM 0x02
+#define DS1390_TRICKLE_CHARGER_4K_OHM 0x03
+#define DS1390_TRICKLE_CHARGER_NO_DIODE 0x04
+#define DS1390_TRICKLE_CHARGER_DIODE 0x08
+
struct ds1390 {
struct rtc_device *rtc;
u8 txrx_buf[9]; /* cmd + 8 registers */
};
+static void ds1390_set_reg(struct device *dev, unsigned char address,
+ unsigned char data)
+{
+ struct spi_device *spi = to_spi_device(dev);
+ unsigned char buf[2];
+
+ /* MSB must be '1' to write */
+ buf[0] = address | 0x80;
+ buf[1] = data;
+
+ spi_write(spi, buf, 2);
+}
+
static int ds1390_get_reg(struct device *dev, unsigned char address,
unsigned char *data)
{
@@ -62,11 +83,50 @@ static int ds1390_get_reg(struct device *dev, unsigned char address,
if (status != 0)
return status;
- *data = chip->txrx_buf[1];
+ *data = chip->txrx_buf[0];
return 0;
}
+static void ds1390_trickle_of_init(struct spi_device *spi)
+{
+ u32 ohms = 0;
+ u8 value;
+
+ if (of_property_read_u32(spi->dev.of_node, "trickle-resistor-ohms",
+ &ohms))
+ goto out;
+
+ /* Enable charger */
+ value = DS1390_TRICKLE_CHARGER_ENABLE;
+ if (of_property_read_bool(spi->dev.of_node, "trickle-diode-disable"))
+ value |= DS1390_TRICKLE_CHARGER_NO_DIODE;
+ else
+ value |= DS1390_TRICKLE_CHARGER_DIODE;
+
+ /* Resistor select */
+ switch (ohms) {
+ case 250:
+ value |= DS1390_TRICKLE_CHARGER_250_OHM;
+ break;
+ case 2000:
+ value |= DS1390_TRICKLE_CHARGER_2K_OHM;
+ break;
+ case 4000:
+ value |= DS1390_TRICKLE_CHARGER_4K_OHM;
+ break;
+ default:
+ dev_warn(&spi->dev,
+ "Unsupported ohm value %02ux in dt\n", ohms);
+ return;
+ }
+
+ ds1390_set_reg(&spi->dev, DS1390_REG_TRICKLE, value);
+
+out:
+ return;
+}
+
static int ds1390_read_time(struct device *dev, struct rtc_time *dt)
{
struct spi_device *spi = to_spi_device(dev);
@@ -143,6 +203,9 @@ static int ds1390_probe(struct spi_device *spi)
return res;
}
+ if (spi->dev.of_node)
+ ds1390_trickle_of_init(spi);
+
chip->rtc = devm_rtc_device_register(&spi->dev, "ds1390",
&ds1390_rtc_ops, THIS_MODULE);
if (IS_ERR(chip->rtc)) {
diff --git a/drivers/rtc/rtc-isl12057.c b/drivers/rtc/rtc-isl12057.c
index a0462e5430c7..54328d4ac0d3 100644
--- a/drivers/rtc/rtc-isl12057.c
+++ b/drivers/rtc/rtc-isl12057.c
@@ -466,9 +466,8 @@ static int isl12057_check_rtc_status(struct device *dev, struct regmap *regmap)
* is for instance the case on ReadyNAS 102, 104 and 2120. On those
* devices with no IRQ driectly connected to the SoC, the RTC chip
* can be forced as a wakeup source by stating that explicitly in
- * the device's .dts file using the "isil,irq2-can-wakeup-machine"
- * boolean property. This will guarantee 'wakealarm' sysfs entry is
- * available on the device.
+ * the device's .dts file using the "wakeup-source" boolean property.
+ * This will guarantee 'wakealarm' sysfs entry is available on the device.
*
* The function below returns 1, i.e. the capability of the chip to
* wakeup the device, based on IRQ availability or if the boolean
@@ -479,8 +478,9 @@ static bool isl12057_can_wakeup_machine(struct device *dev)
{
struct isl12057_rtc_data *data = dev_get_drvdata(dev);
- return (data->irq || of_property_read_bool(dev->of_node,
- "isil,irq2-can-wakeup-machine"));
+ return data->irq || of_property_read_bool(dev->of_node, "wakeup-source")
+ || of_property_read_bool(dev->of_node, /* legacy */
+ "isil,irq2-can-wakeup-machine");
}
#else
static bool isl12057_can_wakeup_machine(struct device *dev)
diff --git a/drivers/rtc/rtc-isl1208.c b/drivers/rtc/rtc-isl1208.c
index aa3b8f1b34d9..b57a304ff62c 100644
--- a/drivers/rtc/rtc-isl1208.c
+++ b/drivers/rtc/rtc-isl1208.c
@@ -638,7 +638,7 @@ isl1208_probe(struct i2c_client *client, const struct i2c_device_id *id)
if (client->irq > 0) {
rc = devm_request_threaded_irq(&client->dev, client->irq, NULL,
isl1208_rtc_interrupt,
- IRQF_SHARED,
+ IRQF_SHARED | IRQF_ONESHOT,
isl1208_driver.driver.name,
client);
if (!rc) {
diff --git a/drivers/rtc/rtc-opal.c b/drivers/rtc/rtc-opal.c
index 6fbf9e617151..df39ce02a99d 100644
--- a/drivers/rtc/rtc-opal.c
+++ b/drivers/rtc/rtc-opal.c
@@ -152,10 +152,10 @@ exit:
/* Set Timed Power-On */
static int opal_set_tpo_time(struct device *dev, struct rtc_wkalrm *alarm)
{
- u64 h_m_s_ms = 0, token;
+ u64 h_m_s_ms = 0;
struct opal_msg msg;
u32 y_m_d = 0;
- int rc;
+ int token, rc;
tm_to_opal(&alarm->time, &y_m_d, &h_m_s_ms);
@@ -199,8 +199,9 @@ static int opal_rtc_probe(struct platform_device *pdev)
{
struct rtc_device *rtc;
- if (pdev->dev.of_node && of_get_property(pdev->dev.of_node, "has-tpo",
- NULL)) {
+ if (pdev->dev.of_node &&
+ (of_property_read_bool(pdev->dev.of_node, "wakeup-source") ||
+ of_property_read_bool(pdev->dev.of_node, "has-tpo")/* legacy */)) {
device_set_wakeup_capable(&pdev->dev, true);
opal_rtc_ops.read_alarm = opal_get_tpo_time;
opal_rtc_ops.set_alarm = opal_set_tpo_time;
diff --git a/drivers/rtc/rtc-pcf2127.c b/drivers/rtc/rtc-pcf2127.c
index 4b11d31f7174..629bfdf8c745 100644
--- a/drivers/rtc/rtc-pcf2127.c
+++ b/drivers/rtc/rtc-pcf2127.c
@@ -20,11 +20,12 @@
#include <linux/module.h>
#include <linux/of.h>
-#define DRV_VERSION "0.0.1"
-
#define PCF2127_REG_CTRL1 (0x00) /* Control Register 1 */
#define PCF2127_REG_CTRL2 (0x01) /* Control Register 2 */
+
#define PCF2127_REG_CTRL3 (0x02) /* Control Register 3 */
+#define PCF2127_REG_CTRL3_BLF BIT(2)
+
#define PCF2127_REG_SC (0x03) /* datetime */
#define PCF2127_REG_MN (0x04)
#define PCF2127_REG_HR (0x05)
@@ -39,8 +40,6 @@ static struct i2c_driver pcf2127_driver;
struct pcf2127 {
struct rtc_device *rtc;
- int voltage_low; /* indicates if a low_voltage was detected */
- int oscillator_failed; /* OSF was detected and date is unreliable */
};
/*
@@ -49,7 +48,6 @@ struct pcf2127 {
*/
static int pcf2127_get_datetime(struct i2c_client *client, struct rtc_time *tm)
{
- struct pcf2127 *pcf2127 = i2c_get_clientdata(client);
unsigned char buf[10] = { PCF2127_REG_CTRL1 };
/* read registers */
@@ -59,18 +57,15 @@ static int pcf2127_get_datetime(struct i2c_client *client, struct rtc_time *tm)
return -EIO;
}
- if (buf[PCF2127_REG_CTRL3] & 0x04) {
- pcf2127->voltage_low = 1;
+ if (buf[PCF2127_REG_CTRL3] & PCF2127_REG_CTRL3_BLF)
dev_info(&client->dev,
"low voltage detected, check/replace RTC battery.\n");
- }
if (buf[PCF2127_REG_SC] & PCF2127_OSF) {
/*
* no need clear the flag here,
* it will be cleared once the new date is saved
*/
- pcf2127->oscillator_failed = 1;
dev_warn(&client->dev,
"oscillator stop detected, date/time is not reliable\n");
return -EINVAL;
@@ -107,7 +102,6 @@ static int pcf2127_get_datetime(struct i2c_client *client, struct rtc_time *tm)
static int pcf2127_set_datetime(struct i2c_client *client, struct rtc_time *tm)
{
- struct pcf2127 *pcf2127 = i2c_get_clientdata(client);
unsigned char buf[8];
int i = 0, err;
@@ -141,9 +135,6 @@ static int pcf2127_set_datetime(struct i2c_client *client, struct rtc_time *tm)
return -EIO;
}
- /* clear OSF flag in client data */
- pcf2127->oscillator_failed = 0;
-
return 0;
}
@@ -151,17 +142,28 @@ static int pcf2127_set_datetime(struct i2c_client *client, struct rtc_time *tm)
static int pcf2127_rtc_ioctl(struct device *dev,
unsigned int cmd, unsigned long arg)
{
- struct pcf2127 *pcf2127 = i2c_get_clientdata(to_i2c_client(dev));
+ struct i2c_client *client = to_i2c_client(dev);
+ unsigned char buf = PCF2127_REG_CTRL3;
+ int touser;
+ int ret;
switch (cmd) {
case RTC_VL_READ:
- if (pcf2127->voltage_low)
- dev_info(dev, "low voltage detected, check/replace battery\n");
- if (pcf2127->oscillator_failed)
- dev_info(dev, "oscillator stop detected, date/time is not reliable\n");
+ ret = i2c_master_send(client, &buf, 1);
+ if (!ret)
+ ret = -EIO;
+ if (ret < 0)
+ return ret;
+
+ ret = i2c_master_recv(client, &buf, 1);
+ if (!ret)
+ ret = -EIO;
+ if (ret < 0)
+ return ret;
- if (copy_to_user((void __user *)arg, &pcf2127->voltage_low,
- sizeof(int)))
+ touser = buf & PCF2127_REG_CTRL3_BLF ? 1 : 0;
+
+ if (copy_to_user((void __user *)arg, &touser, sizeof(int)))
return -EFAULT;
return 0;
default:
@@ -203,8 +205,6 @@ static int pcf2127_probe(struct i2c_client *client,
if (!pcf2127)
return -ENOMEM;
- dev_info(&client->dev, "chip found, driver version " DRV_VERSION "\n");
-
i2c_set_clientdata(client, pcf2127);
pcf2127->rtc = devm_rtc_device_register(&client->dev,
@@ -241,5 +241,4 @@ module_i2c_driver(pcf2127_driver);
MODULE_AUTHOR("Renaud Cerrato <r.cerrato@til-technologies.fr>");
MODULE_DESCRIPTION("NXP PCF2127 RTC driver");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(DRV_VERSION);
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/rtc/rtc-pcf85063.c b/drivers/rtc/rtc-pcf85063.c
index b6d73dd881f2..63334cbeca41 100644
--- a/drivers/rtc/rtc-pcf85063.c
+++ b/drivers/rtc/rtc-pcf85063.c
@@ -80,13 +80,7 @@ static int pcf85063_get_datetime(struct i2c_client *client, struct rtc_time *tm)
pcf85063->c_polarity = (buf[PCF85063_REG_MO] & PCF85063_MO_C) ?
(tm->tm_year >= 100) : (tm->tm_year < 100);
- /* the clock can give out invalid datetime, but we cannot return
- * -EINVAL otherwise hwclock will refuse to set the time on bootup.
- */
- if (rtc_valid_tm(tm) < 0)
- dev_err(&client->dev, "retrieved date/time is not valid.\n");
-
- return 0;
+ return rtc_valid_tm(tm);
}
static int pcf85063_set_datetime(struct i2c_client *client, struct rtc_time *tm)
diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c
index e569243db57e..c8f95b8e463a 100644
--- a/drivers/rtc/rtc-pcf8563.c
+++ b/drivers/rtc/rtc-pcf8563.c
@@ -14,6 +14,7 @@
* published by the Free Software Foundation.
*/
+#include <linux/clk-provider.h>
#include <linux/i2c.h>
#include <linux/bcd.h>
#include <linux/rtc.h>
@@ -40,7 +41,14 @@
#define PCF8563_REG_AMN 0x09 /* alarm */
-#define PCF8563_REG_CLKO 0x0D /* clock out */
+#define PCF8563_REG_CLKO 0x0D /* clock out */
+#define PCF8563_REG_CLKO_FE 0x80 /* clock out enabled */
+#define PCF8563_REG_CLKO_F_MASK 0x03 /* frequenc mask */
+#define PCF8563_REG_CLKO_F_32768HZ 0x00
+#define PCF8563_REG_CLKO_F_1024HZ 0x01
+#define PCF8563_REG_CLKO_F_32HZ 0x02
+#define PCF8563_REG_CLKO_F_1HZ 0x03
+
#define PCF8563_REG_TMRC 0x0E /* timer control */
#define PCF8563_TMRC_ENABLE BIT(7)
#define PCF8563_TMRC_4096 0
@@ -76,6 +84,9 @@ struct pcf8563 {
int voltage_low; /* incicates if a low_voltage was detected */
struct i2c_client *client;
+#ifdef CONFIG_COMMON_CLK
+ struct clk_hw clkout_hw;
+#endif
};
static int pcf8563_read_block_data(struct i2c_client *client, unsigned char reg,
@@ -390,6 +401,158 @@ static int pcf8563_irq_enable(struct device *dev, unsigned int enabled)
return pcf8563_set_alarm_mode(to_i2c_client(dev), !!enabled);
}
+#ifdef CONFIG_COMMON_CLK
+/*
+ * Handling of the clkout
+ */
+
+#define clkout_hw_to_pcf8563(_hw) container_of(_hw, struct pcf8563, clkout_hw)
+
+static int clkout_rates[] = {
+ 32768,
+ 1024,
+ 32,
+ 1,
+};
+
+static unsigned long pcf8563_clkout_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct pcf8563 *pcf8563 = clkout_hw_to_pcf8563(hw);
+ struct i2c_client *client = pcf8563->client;
+ unsigned char buf;
+ int ret = pcf8563_read_block_data(client, PCF8563_REG_CLKO, 1, &buf);
+
+ if (ret < 0)
+ return 0;
+
+ buf &= PCF8563_REG_CLKO_F_MASK;
+ return clkout_rates[ret];
+}
+
+static long pcf8563_clkout_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *prate)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(clkout_rates); i++)
+ if (clkout_rates[i] <= rate)
+ return clkout_rates[i];
+
+ return 0;
+}
+
+static int pcf8563_clkout_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct pcf8563 *pcf8563 = clkout_hw_to_pcf8563(hw);
+ struct i2c_client *client = pcf8563->client;
+ unsigned char buf;
+ int ret = pcf8563_read_block_data(client, PCF8563_REG_CLKO, 1, &buf);
+ int i;
+
+ if (ret < 0)
+ return ret;
+
+ for (i = 0; i < ARRAY_SIZE(clkout_rates); i++)
+ if (clkout_rates[i] == rate) {
+ buf &= ~PCF8563_REG_CLKO_F_MASK;
+ buf |= i;
+ ret = pcf8563_write_block_data(client,
+ PCF8563_REG_CLKO, 1,
+ &buf);
+ return ret;
+ }
+
+ return -EINVAL;
+}
+
+static int pcf8563_clkout_control(struct clk_hw *hw, bool enable)
+{
+ struct pcf8563 *pcf8563 = clkout_hw_to_pcf8563(hw);
+ struct i2c_client *client = pcf8563->client;
+ unsigned char buf;
+ int ret = pcf8563_read_block_data(client, PCF8563_REG_CLKO, 1, &buf);
+
+ if (ret < 0)
+ return ret;
+
+ if (enable)
+ buf |= PCF8563_REG_CLKO_FE;
+ else
+ buf &= ~PCF8563_REG_CLKO_FE;
+
+ ret = pcf8563_write_block_data(client, PCF8563_REG_CLKO, 1, &buf);
+ return ret;
+}
+
+static int pcf8563_clkout_prepare(struct clk_hw *hw)
+{
+ return pcf8563_clkout_control(hw, 1);
+}
+
+static void pcf8563_clkout_unprepare(struct clk_hw *hw)
+{
+ pcf8563_clkout_control(hw, 0);
+}
+
+static int pcf8563_clkout_is_prepared(struct clk_hw *hw)
+{
+ struct pcf8563 *pcf8563 = clkout_hw_to_pcf8563(hw);
+ struct i2c_client *client = pcf8563->client;
+ unsigned char buf;
+ int ret = pcf8563_read_block_data(client, PCF8563_REG_CLKO, 1, &buf);
+
+ if (ret < 0)
+ return ret;
+
+ return !!(buf & PCF8563_REG_CLKO_FE);
+}
+
+static const struct clk_ops pcf8563_clkout_ops = {
+ .prepare = pcf8563_clkout_prepare,
+ .unprepare = pcf8563_clkout_unprepare,
+ .is_prepared = pcf8563_clkout_is_prepared,
+ .recalc_rate = pcf8563_clkout_recalc_rate,
+ .round_rate = pcf8563_clkout_round_rate,
+ .set_rate = pcf8563_clkout_set_rate,
+};
+
+static struct clk *pcf8563_clkout_register_clk(struct pcf8563 *pcf8563)
+{
+ struct i2c_client *client = pcf8563->client;
+ struct device_node *node = client->dev.of_node;
+ struct clk *clk;
+ struct clk_init_data init;
+ int ret;
+ unsigned char buf;
+
+ /* disable the clkout output */
+ buf = 0;
+ ret = pcf8563_write_block_data(client, PCF8563_REG_CLKO, 1, &buf);
+ if (ret < 0)
+ return ERR_PTR(ret);
+
+ init.name = "pcf8563-clkout";
+ init.ops = &pcf8563_clkout_ops;
+ init.flags = CLK_IS_ROOT;
+ init.parent_names = NULL;
+ init.num_parents = 0;
+ pcf8563->clkout_hw.init = &init;
+
+ /* optional override of the clockname */
+ of_property_read_string(node, "clock-output-names", &init.name);
+
+ /* register the clock */
+ clk = devm_clk_register(&client->dev, &pcf8563->clkout_hw);
+
+ if (!IS_ERR(clk))
+ of_clk_add_provider(node, of_clk_src_simple_get, clk);
+
+ return clk;
+}
+#endif
+
static const struct rtc_class_ops pcf8563_rtc_ops = {
.ioctl = pcf8563_rtc_ioctl,
.read_time = pcf8563_rtc_read_time,
@@ -459,6 +622,11 @@ static int pcf8563_probe(struct i2c_client *client,
}
+#ifdef CONFIG_COMMON_CLK
+ /* register clk in common clk framework */
+ pcf8563_clkout_register_clk(pcf8563);
+#endif
+
/* the pcf8563 alarm only supports a minute accuracy */
pcf8563->rtc->uie_unsupported = 1;
diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c
index 41dcb7ddb906..e1687e19c59f 100644
--- a/drivers/rtc/rtc-pl031.c
+++ b/drivers/rtc/rtc-pl031.c
@@ -23,6 +23,7 @@
#include <linux/io.h>
#include <linux/bcd.h>
#include <linux/delay.h>
+#include <linux/pm_wakeirq.h>
#include <linux/slab.h>
/*
@@ -305,6 +306,8 @@ static int pl031_remove(struct amba_device *adev)
{
struct pl031_local *ldata = dev_get_drvdata(&adev->dev);
+ dev_pm_clear_wake_irq(&adev->dev);
+ device_init_wakeup(&adev->dev, false);
free_irq(adev->irq[0], ldata);
rtc_device_unregister(ldata->rtc);
iounmap(ldata->base);
@@ -370,7 +373,7 @@ static int pl031_probe(struct amba_device *adev, const struct amba_id *id)
}
}
- device_init_wakeup(&adev->dev, 1);
+ device_init_wakeup(&adev->dev, true);
ldata->rtc = rtc_device_register("pl031", &adev->dev, ops,
THIS_MODULE);
if (IS_ERR(ldata->rtc)) {
@@ -383,7 +386,7 @@ static int pl031_probe(struct amba_device *adev, const struct amba_id *id)
ret = -EIO;
goto out_no_irq;
}
-
+ dev_pm_set_wake_irq(&adev->dev, adev->irq[0]);
return 0;
out_no_irq:
@@ -408,7 +411,6 @@ static struct pl031_vendor_data arm_pl031 = {
.set_alarm = pl031_set_alarm,
.alarm_irq_enable = pl031_alarm_irq_enable,
},
- .irqflags = IRQF_NO_SUSPEND,
};
/* The First ST derivative */
@@ -422,7 +424,6 @@ static struct pl031_vendor_data stv1_pl031 = {
},
.clockwatch = true,
.st_weekday = true,
- .irqflags = IRQF_NO_SUSPEND,
};
/* And the second ST derivative */
@@ -439,8 +440,10 @@ static struct pl031_vendor_data stv2_pl031 = {
/*
* This variant shares the IRQ with another block and must not
* suspend that IRQ line.
+ * TODO check if it shares with IRQF_NO_SUSPEND user, else we can
+ * remove IRQF_COND_SUSPEND
*/
- .irqflags = IRQF_SHARED | IRQF_NO_SUSPEND,
+ .irqflags = IRQF_SHARED | IRQF_COND_SUSPEND,
};
static struct amba_id pl031_ids[] = {
diff --git a/drivers/rtc/rtc-rv8803.c b/drivers/rtc/rtc-rv8803.c
new file mode 100644
index 000000000000..e7329e21bfe3
--- /dev/null
+++ b/drivers/rtc/rtc-rv8803.c
@@ -0,0 +1,521 @@
+/*
+ * RTC driver for the Micro Crystal RV8803
+ *
+ * Copyright (C) 2015 Micro Crystal SA
+ *
+ * Alexandre Belloni <alexandre.belloni@free-electrons.com>
+ *
+ * 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 <linux/bcd.h>
+#include <linux/bitops.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/rtc.h>
+
+#define RV8803_SEC 0x00
+#define RV8803_MIN 0x01
+#define RV8803_HOUR 0x02
+#define RV8803_WEEK 0x03
+#define RV8803_DAY 0x04
+#define RV8803_MONTH 0x05
+#define RV8803_YEAR 0x06
+#define RV8803_RAM 0x07
+#define RV8803_ALARM_MIN 0x08
+#define RV8803_ALARM_HOUR 0x09
+#define RV8803_ALARM_WEEK_OR_DAY 0x0A
+#define RV8803_EXT 0x0D
+#define RV8803_FLAG 0x0E
+#define RV8803_CTRL 0x0F
+
+#define RV8803_EXT_WADA BIT(6)
+
+#define RV8803_FLAG_V1F BIT(0)
+#define RV8803_FLAG_V2F BIT(1)
+#define RV8803_FLAG_AF BIT(3)
+#define RV8803_FLAG_TF BIT(4)
+#define RV8803_FLAG_UF BIT(5)
+
+#define RV8803_CTRL_RESET BIT(0)
+
+#define RV8803_CTRL_EIE BIT(2)
+#define RV8803_CTRL_AIE BIT(3)
+#define RV8803_CTRL_TIE BIT(4)
+#define RV8803_CTRL_UIE BIT(5)
+
+struct rv8803_data {
+ struct i2c_client *client;
+ struct rtc_device *rtc;
+ spinlock_t flags_lock;
+ u8 ctrl;
+};
+
+static irqreturn_t rv8803_handle_irq(int irq, void *dev_id)
+{
+ struct i2c_client *client = dev_id;
+ struct rv8803_data *rv8803 = i2c_get_clientdata(client);
+ unsigned long events = 0;
+ u8 flags;
+
+ spin_lock(&rv8803->flags_lock);
+
+ flags = i2c_smbus_read_byte_data(client, RV8803_FLAG);
+ if (flags <= 0) {
+ spin_unlock(&rv8803->flags_lock);
+ return IRQ_NONE;
+ }
+
+ if (flags & RV8803_FLAG_V1F)
+ dev_warn(&client->dev, "Voltage low, temperature compensation stopped.\n");
+
+ if (flags & RV8803_FLAG_V2F)
+ dev_warn(&client->dev, "Voltage low, data loss detected.\n");
+
+ if (flags & RV8803_FLAG_TF) {
+ flags &= ~RV8803_FLAG_TF;
+ rv8803->ctrl &= ~RV8803_CTRL_TIE;
+ events |= RTC_PF;
+ }
+
+ if (flags & RV8803_FLAG_AF) {
+ flags &= ~RV8803_FLAG_AF;
+ rv8803->ctrl &= ~RV8803_CTRL_AIE;
+ events |= RTC_AF;
+ }
+
+ if (flags & RV8803_FLAG_UF) {
+ flags &= ~RV8803_FLAG_UF;
+ rv8803->ctrl &= ~RV8803_CTRL_UIE;
+ events |= RTC_UF;
+ }
+
+ if (events) {
+ rtc_update_irq(rv8803->rtc, 1, events);
+ i2c_smbus_write_byte_data(client, RV8803_FLAG, flags);
+ i2c_smbus_write_byte_data(rv8803->client, RV8803_CTRL,
+ rv8803->ctrl);
+ }
+
+ spin_unlock(&rv8803->flags_lock);
+
+ return IRQ_HANDLED;
+}
+
+static int rv8803_get_time(struct device *dev, struct rtc_time *tm)
+{
+ struct rv8803_data *rv8803 = dev_get_drvdata(dev);
+ u8 date1[7];
+ u8 date2[7];
+ u8 *date = date1;
+ int ret, flags;
+
+ flags = i2c_smbus_read_byte_data(rv8803->client, RV8803_FLAG);
+ if (flags < 0)
+ return flags;
+
+ if (flags & RV8803_FLAG_V2F) {
+ dev_warn(dev, "Voltage low, data is invalid.\n");
+ return -EINVAL;
+ }
+
+ ret = i2c_smbus_read_i2c_block_data(rv8803->client, RV8803_SEC,
+ 7, date);
+ if (ret != 7)
+ return ret < 0 ? ret : -EIO;
+
+ if ((date1[RV8803_SEC] & 0x7f) == bin2bcd(59)) {
+ ret = i2c_smbus_read_i2c_block_data(rv8803->client, RV8803_SEC,
+ 7, date2);
+ if (ret != 7)
+ return ret < 0 ? ret : -EIO;
+
+ if ((date2[RV8803_SEC] & 0x7f) != bin2bcd(59))
+ date = date2;
+ }
+
+ tm->tm_sec = bcd2bin(date[RV8803_SEC] & 0x7f);
+ tm->tm_min = bcd2bin(date[RV8803_MIN] & 0x7f);
+ tm->tm_hour = bcd2bin(date[RV8803_HOUR] & 0x3f);
+ tm->tm_wday = ffs(date[RV8803_WEEK] & 0x7f);
+ tm->tm_mday = bcd2bin(date[RV8803_DAY] & 0x3f);
+ tm->tm_mon = bcd2bin(date[RV8803_MONTH] & 0x1f) - 1;
+ tm->tm_year = bcd2bin(date[RV8803_YEAR]) + 100;
+
+ return rtc_valid_tm(tm);
+}
+
+static int rv8803_set_time(struct device *dev, struct rtc_time *tm)
+{
+ struct rv8803_data *rv8803 = dev_get_drvdata(dev);
+ u8 date[7];
+ int flags, ret;
+ unsigned long irqflags;
+
+ if ((tm->tm_year < 100) || (tm->tm_year > 199))
+ return -EINVAL;
+
+ date[RV8803_SEC] = bin2bcd(tm->tm_sec);
+ date[RV8803_MIN] = bin2bcd(tm->tm_min);
+ date[RV8803_HOUR] = bin2bcd(tm->tm_hour);
+ date[RV8803_WEEK] = 1 << (tm->tm_wday);
+ date[RV8803_DAY] = bin2bcd(tm->tm_mday);
+ date[RV8803_MONTH] = bin2bcd(tm->tm_mon + 1);
+ date[RV8803_YEAR] = bin2bcd(tm->tm_year - 100);
+
+ ret = i2c_smbus_write_i2c_block_data(rv8803->client, RV8803_SEC,
+ 7, date);
+ if (ret < 0)
+ return ret;
+
+ spin_lock_irqsave(&rv8803->flags_lock, irqflags);
+
+ flags = i2c_smbus_read_byte_data(rv8803->client, RV8803_FLAG);
+ if (flags < 0) {
+ spin_unlock_irqrestore(&rv8803->flags_lock, irqflags);
+ return flags;
+ }
+
+ ret = i2c_smbus_write_byte_data(rv8803->client, RV8803_FLAG,
+ flags & ~RV8803_FLAG_V2F);
+
+ spin_unlock_irqrestore(&rv8803->flags_lock, irqflags);
+
+ return ret;
+}
+
+static int rv8803_get_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+ struct rv8803_data *rv8803 = dev_get_drvdata(dev);
+ struct i2c_client *client = rv8803->client;
+ u8 alarmvals[3];
+ int flags, ret;
+
+ ret = i2c_smbus_read_i2c_block_data(client, RV8803_ALARM_MIN,
+ 3, alarmvals);
+ if (ret != 3)
+ return ret < 0 ? ret : -EIO;
+
+ flags = i2c_smbus_read_byte_data(client, RV8803_FLAG);
+ if (flags < 0)
+ return flags;
+
+ alrm->time.tm_sec = 0;
+ alrm->time.tm_min = bcd2bin(alarmvals[0] & 0x7f);
+ alrm->time.tm_hour = bcd2bin(alarmvals[1] & 0x3f);
+ alrm->time.tm_wday = -1;
+ alrm->time.tm_mday = bcd2bin(alarmvals[2] & 0x3f);
+ alrm->time.tm_mon = -1;
+ alrm->time.tm_year = -1;
+
+ alrm->enabled = !!(rv8803->ctrl & RV8803_CTRL_AIE);
+ alrm->pending = (flags & RV8803_FLAG_AF) && alrm->enabled;
+
+ return 0;
+}
+
+static int rv8803_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct rv8803_data *rv8803 = dev_get_drvdata(dev);
+ u8 alarmvals[3];
+ u8 ctrl[2];
+ int ret, err;
+ unsigned long irqflags;
+
+ /* The alarm has no seconds, round up to nearest minute */
+ if (alrm->time.tm_sec) {
+ time64_t alarm_time = rtc_tm_to_time64(&alrm->time);
+
+ alarm_time += 60 - alrm->time.tm_sec;
+ rtc_time64_to_tm(alarm_time, &alrm->time);
+ }
+
+ spin_lock_irqsave(&rv8803->flags_lock, irqflags);
+
+ ret = i2c_smbus_read_i2c_block_data(client, RV8803_FLAG, 2, ctrl);
+ if (ret != 2) {
+ spin_unlock_irqrestore(&rv8803->flags_lock, irqflags);
+ return ret < 0 ? ret : -EIO;
+ }
+
+ alarmvals[0] = bin2bcd(alrm->time.tm_min);
+ alarmvals[1] = bin2bcd(alrm->time.tm_hour);
+ alarmvals[2] = bin2bcd(alrm->time.tm_mday);
+
+ if (rv8803->ctrl & (RV8803_CTRL_AIE | RV8803_CTRL_UIE)) {
+ rv8803->ctrl &= ~(RV8803_CTRL_AIE | RV8803_CTRL_UIE);
+ err = i2c_smbus_write_byte_data(rv8803->client, RV8803_CTRL,
+ rv8803->ctrl);
+ if (err) {
+ spin_unlock_irqrestore(&rv8803->flags_lock, irqflags);
+ return err;
+ }
+ }
+
+ ctrl[1] &= ~RV8803_FLAG_AF;
+ err = i2c_smbus_write_byte_data(rv8803->client, RV8803_FLAG, ctrl[1]);
+ spin_unlock_irqrestore(&rv8803->flags_lock, irqflags);
+ if (err)
+ return err;
+
+ err = i2c_smbus_write_i2c_block_data(rv8803->client, RV8803_ALARM_MIN,
+ 3, alarmvals);
+ if (err)
+ return err;
+
+ if (alrm->enabled) {
+ if (rv8803->rtc->uie_rtctimer.enabled)
+ rv8803->ctrl |= RV8803_CTRL_UIE;
+ if (rv8803->rtc->aie_timer.enabled)
+ rv8803->ctrl |= RV8803_CTRL_AIE;
+
+ err = i2c_smbus_write_byte_data(rv8803->client, RV8803_CTRL,
+ rv8803->ctrl);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static int rv8803_alarm_irq_enable(struct device *dev, unsigned int enabled)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct rv8803_data *rv8803 = dev_get_drvdata(dev);
+ int ctrl, flags, err;
+ unsigned long irqflags;
+
+ ctrl = rv8803->ctrl;
+
+ if (enabled) {
+ if (rv8803->rtc->uie_rtctimer.enabled)
+ ctrl |= RV8803_CTRL_UIE;
+ if (rv8803->rtc->aie_timer.enabled)
+ ctrl |= RV8803_CTRL_AIE;
+ } else {
+ if (!rv8803->rtc->uie_rtctimer.enabled)
+ ctrl &= ~RV8803_CTRL_UIE;
+ if (!rv8803->rtc->aie_timer.enabled)
+ ctrl &= ~RV8803_CTRL_AIE;
+ }
+
+ spin_lock_irqsave(&rv8803->flags_lock, irqflags);
+ flags = i2c_smbus_read_byte_data(client, RV8803_FLAG);
+ if (flags < 0) {
+ spin_unlock_irqrestore(&rv8803->flags_lock, irqflags);
+ return flags;
+ }
+ flags &= ~(RV8803_FLAG_AF | RV8803_FLAG_UF);
+ err = i2c_smbus_write_byte_data(client, RV8803_FLAG, flags);
+ spin_unlock_irqrestore(&rv8803->flags_lock, irqflags);
+ if (err)
+ return err;
+
+ if (ctrl != rv8803->ctrl) {
+ rv8803->ctrl = ctrl;
+ err = i2c_smbus_write_byte_data(client, RV8803_CTRL,
+ rv8803->ctrl);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static int rv8803_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct rv8803_data *rv8803 = dev_get_drvdata(dev);
+ int flags, ret = 0;
+ unsigned long irqflags;
+
+ switch (cmd) {
+ case RTC_VL_READ:
+ flags = i2c_smbus_read_byte_data(client, RV8803_FLAG);
+ if (flags < 0)
+ return flags;
+
+ if (flags & RV8803_FLAG_V1F)
+ dev_warn(&client->dev, "Voltage low, temperature compensation stopped.\n");
+
+ if (flags & RV8803_FLAG_V2F)
+ dev_warn(&client->dev, "Voltage low, data loss detected.\n");
+
+ flags &= RV8803_FLAG_V1F | RV8803_FLAG_V2F;
+
+ if (copy_to_user((void __user *)arg, &flags, sizeof(int)))
+ return -EFAULT;
+
+ return 0;
+
+ case RTC_VL_CLR:
+ spin_lock_irqsave(&rv8803->flags_lock, irqflags);
+ flags = i2c_smbus_read_byte_data(client, RV8803_FLAG);
+ if (flags < 0) {
+ spin_unlock_irqrestore(&rv8803->flags_lock, irqflags);
+ return flags;
+ }
+
+ flags &= ~(RV8803_FLAG_V1F | RV8803_FLAG_V2F);
+ ret = i2c_smbus_write_byte_data(client, RV8803_FLAG, flags);
+ spin_unlock_irqrestore(&rv8803->flags_lock, irqflags);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+
+ default:
+ return -ENOIOCTLCMD;
+ }
+}
+
+static ssize_t rv8803_nvram_write(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *attr,
+ char *buf, loff_t off, size_t count)
+{
+ struct device *dev = kobj_to_dev(kobj);
+ struct i2c_client *client = to_i2c_client(dev);
+ int ret;
+
+ ret = i2c_smbus_write_byte_data(client, RV8803_RAM, buf[0]);
+ if (ret < 0)
+ return ret;
+
+ return 1;
+}
+
+static ssize_t rv8803_nvram_read(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *attr,
+ char *buf, loff_t off, size_t count)
+{
+ struct device *dev = kobj_to_dev(kobj);
+ struct i2c_client *client = to_i2c_client(dev);
+ int ret;
+
+ ret = i2c_smbus_read_byte_data(client, RV8803_RAM);
+ if (ret < 0)
+ return ret;
+
+ buf[0] = ret;
+
+ return 1;
+}
+
+static struct bin_attribute rv8803_nvram_attr = {
+ .attr = {
+ .name = "nvram",
+ .mode = S_IRUGO | S_IWUSR,
+ },
+ .size = 1,
+ .read = rv8803_nvram_read,
+ .write = rv8803_nvram_write,
+};
+
+static struct rtc_class_ops rv8803_rtc_ops = {
+ .read_time = rv8803_get_time,
+ .set_time = rv8803_set_time,
+ .ioctl = rv8803_ioctl,
+};
+
+static int rv8803_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+ struct rv8803_data *rv8803;
+ int err, flags;
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
+ I2C_FUNC_SMBUS_I2C_BLOCK)) {
+ dev_err(&adapter->dev, "doesn't support I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_I2C_BLOCK\n");
+ return -EIO;
+ }
+
+ rv8803 = devm_kzalloc(&client->dev, sizeof(struct rv8803_data),
+ GFP_KERNEL);
+ if (!rv8803)
+ return -ENOMEM;
+
+ rv8803->client = client;
+ i2c_set_clientdata(client, rv8803);
+
+ flags = i2c_smbus_read_byte_data(client, RV8803_FLAG);
+ if (flags < 0)
+ return flags;
+
+ if (flags & RV8803_FLAG_V1F)
+ dev_warn(&client->dev, "Voltage low, temperature compensation stopped.\n");
+
+ if (flags & RV8803_FLAG_V2F)
+ dev_warn(&client->dev, "Voltage low, data loss detected.\n");
+
+ if (flags & RV8803_FLAG_AF)
+ dev_warn(&client->dev, "An alarm maybe have been missed.\n");
+
+ if (client->irq > 0) {
+ err = devm_request_threaded_irq(&client->dev, client->irq,
+ NULL, rv8803_handle_irq,
+ IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+ "rv8803", client);
+ if (err) {
+ dev_warn(&client->dev, "unable to request IRQ, alarms disabled\n");
+ client->irq = 0;
+ } else {
+ rv8803_rtc_ops.read_alarm = rv8803_get_alarm;
+ rv8803_rtc_ops.set_alarm = rv8803_set_alarm;
+ rv8803_rtc_ops.alarm_irq_enable = rv8803_alarm_irq_enable;
+ }
+ }
+
+ rv8803->rtc = devm_rtc_device_register(&client->dev, client->name,
+ &rv8803_rtc_ops, THIS_MODULE);
+ if (IS_ERR(rv8803->rtc)) {
+ dev_err(&client->dev, "unable to register the class device\n");
+ return PTR_ERR(rv8803->rtc);
+ }
+
+ err = i2c_smbus_write_byte_data(rv8803->client, RV8803_EXT,
+ RV8803_EXT_WADA);
+ if (err)
+ return err;
+
+ err = device_create_bin_file(&client->dev, &rv8803_nvram_attr);
+ if (err)
+ return err;
+
+ rv8803->rtc->max_user_freq = 1;
+
+ return 0;
+}
+
+static int rv8803_remove(struct i2c_client *client)
+{
+ device_remove_bin_file(&client->dev, &rv8803_nvram_attr);
+
+ return 0;
+}
+
+static const struct i2c_device_id rv8803_id[] = {
+ { "rv8803", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, rv8803_id);
+
+static struct i2c_driver rv8803_driver = {
+ .driver = {
+ .name = "rtc-rv8803",
+ },
+ .probe = rv8803_probe,
+ .remove = rv8803_remove,
+ .id_table = rv8803_id,
+};
+module_i2c_driver(rv8803_driver);
+
+MODULE_AUTHOR("Alexandre Belloni <alexandre.belloni@free-electrons.com>");
+MODULE_DESCRIPTION("Micro Crystal RV8803 RTC driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/rtc/rtc-rx8025.c b/drivers/rtc/rtc-rx8025.c
index 24c3d69ce1b9..bd911bafb809 100644
--- a/drivers/rtc/rtc-rx8025.c
+++ b/drivers/rtc/rtc-rx8025.c
@@ -65,6 +65,7 @@
static const struct i2c_device_id rx8025_id[] = {
{ "rx8025", 0 },
+ { "rv8803", 1 },
{ }
};
MODULE_DEVICE_TABLE(i2c, rx8025_id);
@@ -518,9 +519,8 @@ static int rx8025_probe(struct i2c_client *client,
}
rx8025 = devm_kzalloc(&client->dev, sizeof(*rx8025), GFP_KERNEL);
- if (!rx8025) {
+ if (!rx8025)
return -ENOMEM;
- }
rx8025->client = client;
i2c_set_clientdata(client, rx8025);
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index 7cc8f73a3fe8..ffb860d18701 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -302,6 +302,7 @@ static int s3c_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
struct s3c_rtc *info = dev_get_drvdata(dev);
struct rtc_time *tm = &alrm->time;
unsigned int alrm_en;
+ int year = tm->tm_year - 100;
dev_dbg(dev, "s3c_rtc_setalarm: %d, %04d.%02d.%02d %02d:%02d:%02d\n",
alrm->enabled,
@@ -328,6 +329,21 @@ static int s3c_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
writeb(bin2bcd(tm->tm_hour), info->base + S3C2410_ALMHOUR);
}
+ if (year < 100 && year >= 0) {
+ alrm_en |= S3C2410_RTCALM_YEAREN;
+ writeb(bin2bcd(year), info->base + S3C2410_ALMYEAR);
+ }
+
+ if (tm->tm_mon < 12 && tm->tm_mon >= 0) {
+ alrm_en |= S3C2410_RTCALM_MONEN;
+ writeb(bin2bcd(tm->tm_mon + 1), info->base + S3C2410_ALMMON);
+ }
+
+ if (tm->tm_mday <= 31 && tm->tm_mday >= 1) {
+ alrm_en |= S3C2410_RTCALM_DAYEN;
+ writeb(bin2bcd(tm->tm_mday), info->base + S3C2410_ALMDATE);
+ }
+
dev_dbg(dev, "setting S3C2410_RTCALM to %08x\n", alrm_en);
writeb(alrm_en, info->base + S3C2410_RTCALM);
diff --git a/drivers/rtc/rtc-stmp3xxx.c b/drivers/rtc/rtc-stmp3xxx.c
index eb09eddf39b8..ca54d039da31 100644
--- a/drivers/rtc/rtc-stmp3xxx.c
+++ b/drivers/rtc/rtc-stmp3xxx.c
@@ -32,8 +32,6 @@
#include <linux/stmp3xxx_rtc_wdt.h>
#define STMP3XXX_RTC_CTRL 0x0
-#define STMP3XXX_RTC_CTRL_SET 0x4
-#define STMP3XXX_RTC_CTRL_CLR 0x8
#define STMP3XXX_RTC_CTRL_ALARM_IRQ_EN 0x00000001
#define STMP3XXX_RTC_CTRL_ONEMSEC_IRQ_EN 0x00000002
#define STMP3XXX_RTC_CTRL_ALARM_IRQ 0x00000004
@@ -52,8 +50,6 @@
#define STMP3XXX_RTC_WATCHDOG 0x50
#define STMP3XXX_RTC_PERSISTENT0 0x60
-#define STMP3XXX_RTC_PERSISTENT0_SET 0x64
-#define STMP3XXX_RTC_PERSISTENT0_CLR 0x68
#define STMP3XXX_RTC_PERSISTENT0_CLOCKSOURCE (1 << 0)
#define STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN (1 << 1)
#define STMP3XXX_RTC_PERSISTENT0_ALARM_EN (1 << 2)
@@ -179,7 +175,7 @@ static irqreturn_t stmp3xxx_rtc_interrupt(int irq, void *dev_id)
if (status & STMP3XXX_RTC_CTRL_ALARM_IRQ) {
writel(STMP3XXX_RTC_CTRL_ALARM_IRQ,
- rtc_data->io + STMP3XXX_RTC_CTRL_CLR);
+ rtc_data->io + STMP3XXX_RTC_CTRL + STMP_OFFSET_REG_CLR);
rtc_update_irq(rtc_data->rtc, 1, RTC_AF | RTC_IRQF);
return IRQ_HANDLED;
}
@@ -194,15 +190,17 @@ static int stmp3xxx_alarm_irq_enable(struct device *dev, unsigned int enabled)
if (enabled) {
writel(STMP3XXX_RTC_PERSISTENT0_ALARM_EN |
STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN,
- rtc_data->io + STMP3XXX_RTC_PERSISTENT0_SET);
+ rtc_data->io + STMP3XXX_RTC_PERSISTENT0 +
+ STMP_OFFSET_REG_SET);
writel(STMP3XXX_RTC_CTRL_ALARM_IRQ_EN,
- rtc_data->io + STMP3XXX_RTC_CTRL_SET);
+ rtc_data->io + STMP3XXX_RTC_CTRL + STMP_OFFSET_REG_SET);
} else {
writel(STMP3XXX_RTC_PERSISTENT0_ALARM_EN |
STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN,
- rtc_data->io + STMP3XXX_RTC_PERSISTENT0_CLR);
+ rtc_data->io + STMP3XXX_RTC_PERSISTENT0 +
+ STMP_OFFSET_REG_CLR);
writel(STMP3XXX_RTC_CTRL_ALARM_IRQ_EN,
- rtc_data->io + STMP3XXX_RTC_CTRL_CLR);
+ rtc_data->io + STMP3XXX_RTC_CTRL + STMP_OFFSET_REG_CLR);
}
return 0;
}
@@ -245,7 +243,7 @@ static int stmp3xxx_rtc_remove(struct platform_device *pdev)
return 0;
writel(STMP3XXX_RTC_CTRL_ALARM_IRQ_EN,
- rtc_data->io + STMP3XXX_RTC_CTRL_CLR);
+ rtc_data->io + STMP3XXX_RTC_CTRL + STMP_OFFSET_REG_CLR);
return 0;
}
@@ -334,16 +332,17 @@ static int stmp3xxx_rtc_probe(struct platform_device *pdev)
STMP3XXX_RTC_PERSISTENT0_CLOCKSOURCE;
}
- writel(pers0_set, rtc_data->io + STMP3XXX_RTC_PERSISTENT0_SET);
+ writel(pers0_set, rtc_data->io + STMP3XXX_RTC_PERSISTENT0 +
+ STMP_OFFSET_REG_SET);
writel(STMP3XXX_RTC_PERSISTENT0_ALARM_EN |
STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN |
STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE | pers0_clr,
- rtc_data->io + STMP3XXX_RTC_PERSISTENT0_CLR);
+ rtc_data->io + STMP3XXX_RTC_PERSISTENT0 + STMP_OFFSET_REG_CLR);
writel(STMP3XXX_RTC_CTRL_ONEMSEC_IRQ_EN |
STMP3XXX_RTC_CTRL_ALARM_IRQ_EN,
- rtc_data->io + STMP3XXX_RTC_CTRL_CLR);
+ rtc_data->io + STMP3XXX_RTC_CTRL + STMP_OFFSET_REG_CLR);
rtc_data->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
&stmp3xxx_rtc_ops, THIS_MODULE);
@@ -376,7 +375,7 @@ static int stmp3xxx_rtc_resume(struct device *dev)
writel(STMP3XXX_RTC_PERSISTENT0_ALARM_EN |
STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN |
STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE,
- rtc_data->io + STMP3XXX_RTC_PERSISTENT0_CLR);
+ rtc_data->io + STMP3XXX_RTC_PERSISTENT0 + STMP_OFFSET_REG_CLR);
return 0;
}
#endif