diff --git a/Documentation/devicetree/bindings/rtc/atmel,at91rm9200-rtc.yaml b/Documentation/devicetree/bindings/rtc/atmel,at91rm9200-rtc.yaml
index 4d2bef15fb7abca85c125a9108b00979213ab05a..c8bb2eef442dd6a77f8ac8a167ec8cd08a1bfa64 100644
--- a/Documentation/devicetree/bindings/rtc/atmel,at91rm9200-rtc.yaml
+++ b/Documentation/devicetree/bindings/rtc/atmel,at91rm9200-rtc.yaml
@@ -14,13 +14,17 @@ maintainers:
properties:
compatible:
- enum:
- - atmel,at91rm9200-rtc
- - atmel,at91sam9x5-rtc
- - atmel,sama5d4-rtc
- - atmel,sama5d2-rtc
- - microchip,sam9x60-rtc
- - microchip,sama7g5-rtc
+ oneOf:
+ - enum:
+ - atmel,at91rm9200-rtc
+ - atmel,at91sam9x5-rtc
+ - atmel,sama5d4-rtc
+ - atmel,sama5d2-rtc
+ - microchip,sam9x60-rtc
+ - microchip,sama7g5-rtc
+ - items:
+ - const: microchip,sam9x7-rtc
+ - const: microchip,sam9x60-rtc
reg:
maxItems: 1
diff --git a/Documentation/devicetree/bindings/rtc/intersil,isl12022.yaml b/Documentation/devicetree/bindings/rtc/intersil,isl12022.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..c2d1441ef273f0969d60e61ecef44bc849d121e4
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/intersil,isl12022.yaml
@@ -0,0 +1,64 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rtc/intersil,isl12022.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Intersil ISL12022 Real-time Clock
+
+maintainers:
+ - Alexandre Belloni <alexandre.belloni@bootlin.com>
+
+properties:
+ compatible:
+ const: isil,isl12022
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ '#clock-cells':
+ const: 0
+
+ isil,battery-trip-levels-microvolt:
+ description:
+ The battery voltages at which the first alarm and second alarm
+ should trigger (normally ~85% and ~75% of nominal V_BAT).
+ items:
+ - enum: [2125000, 2295000, 2550000, 2805000, 3060000, 4250000, 4675000]
+ - enum: [1875000, 2025000, 2250000, 2475000, 2700000, 3750000, 4125000]
+
+required:
+ - compatible
+ - reg
+
+allOf:
+ - $ref: rtc.yaml#
+ # If #clock-cells is present, interrupts must not be present
+ - if:
+ required:
+ - '#clock-cells'
+ then:
+ properties:
+ interrupts: false
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ rtc@6f {
+ compatible = "isil,isl12022";
+ reg = <0x6f>;
+ interrupts-extended = <&gpio1 5 IRQ_TYPE_LEVEL_LOW>;
+ isil,battery-trip-levels-microvolt = <2550000>, <2250000>;
+ };
+ };
+
+...
diff --git a/Documentation/devicetree/bindings/rtc/maxim,ds3231.txt b/Documentation/devicetree/bindings/rtc/maxim,ds3231.txt
deleted file mode 100644
index 85be53a421809c0b8e04c6bf1dfa9833ff84a99d..0000000000000000000000000000000000000000
--- a/Documentation/devicetree/bindings/rtc/maxim,ds3231.txt
+++ /dev/null
@@ -1,38 +0,0 @@
-* Maxim DS3231 Real Time Clock
-
-Required properties:
-- compatible: Should contain "maxim,ds3231".
-- reg: I2C address for chip.
-
-Optional property:
-- #clock-cells: Should be 1.
-- clock-output-names:
- overwrite the default clock names "ds3231_clk_sqw" and "ds3231_clk_32khz".
-
-Each clock is assigned an identifier and client nodes can use this identifier
-to specify the clock which they consume. Following indices are allowed:
- - 0: square-wave output on the SQW pin
- - 1: square-wave output on the 32kHz pin
-
-- interrupts: rtc alarm/event interrupt. When this property is selected,
- clock on the SQW pin cannot be used.
-
-Example:
-
-ds3231: ds3231@51 {
- compatible = "maxim,ds3231";
- reg = <0x68>;
- #clock-cells = <1>;
-};
-
-device1 {
-...
- clocks = <&ds3231 0>;
-...
-};
-
-device2 {
-...
- clocks = <&ds3231 1>;
-...
-};
diff --git a/Documentation/devicetree/bindings/rtc/nxp,pcf2127.yaml b/Documentation/devicetree/bindings/rtc/nxp,pcf2127.yaml
index bcb2300276227eee0d391fe0c6e72c5b1fb98d78..2d9fe5a75b06715d970a72ee66c3f2a4915500f5 100644
--- a/Documentation/devicetree/bindings/rtc/nxp,pcf2127.yaml
+++ b/Documentation/devicetree/bindings/rtc/nxp,pcf2127.yaml
@@ -18,6 +18,7 @@ properties:
- nxp,pca2129
- nxp,pcf2127
- nxp,pcf2129
+ - nxp,pcf2131
reg:
maxItems: 1
diff --git a/Documentation/devicetree/bindings/rtc/st,m48t86.yaml b/Documentation/devicetree/bindings/rtc/st,m48t86.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..e3e12fa233806d53b486ebd3577f293572a75571
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/st,m48t86.yaml
@@ -0,0 +1,38 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rtc/st,m48t86.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ST M48T86 / Dallas DS12887 RTC with SRAM
+
+maintainers:
+ - Alexandre Belloni <alexandre.belloni@bootlin.com>
+
+allOf:
+ - $ref: rtc.yaml
+
+properties:
+ compatible:
+ enum:
+ - st,m48t86
+
+ reg:
+ items:
+ - description: index register
+ - description: data register
+
+required:
+ - compatible
+ - reg
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ rtc@10800000 {
+ compatible = "st,m48t86";
+ reg = <0x10800000 0x1>, <0x11700000 0x1>;
+ };
+
+...
diff --git a/Documentation/devicetree/bindings/rtc/trivial-rtc.yaml b/Documentation/devicetree/bindings/rtc/trivial-rtc.yaml
index 9af77f21bb7f487b30233bdb4369f3bd96ca62ca..2a65f31ac5a058a53970d6f31514ca0e71e35600 100644
--- a/Documentation/devicetree/bindings/rtc/trivial-rtc.yaml
+++ b/Documentation/devicetree/bindings/rtc/trivial-rtc.yaml
@@ -45,8 +45,6 @@ properties:
- isil,isl1208
# Intersil ISL1218 Low Power RTC with Battery Backed SRAM
- isil,isl1218
- # Intersil ISL12022 Real-time Clock
- - isil,isl12022
# Real Time Clock Module with I2C-Bus
- microcrystal,rv3029
# Real Time Clock
diff --git a/MAINTAINERS b/MAINTAINERS
index 1997fd9e2698f562f2639baa752dc0005d63846c..389fe9e38884d552aa26ba72cb7ad012a412d4c8 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -18084,7 +18084,6 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux.git
F: Documentation/admin-guide/rtc.rst
F: Documentation/devicetree/bindings/rtc/
F: drivers/rtc/
-F: include/linux/platform_data/rtc-*
F: include/linux/rtc.h
F: include/linux/rtc/
F: include/uapi/linux/rtc.h
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 05f4b2d66290dc17be553bfb647568e87bbaa0a3..d7502433c78aa318a1a8baf1b835d1d4e1e639f3 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -904,9 +904,9 @@ config RTC_DRV_PCF2127
select REGMAP_SPI if SPI_MASTER
select WATCHDOG_CORE if WATCHDOG
help
- If you say yes here you get support for the NXP PCF2127/29 RTC
+ If you say yes here you get support for the NXP PCF2127/29/31 RTC
chips with integrated quartz crystal for industrial applications.
- Both chips also have watchdog timer and tamper switch detection
+ These chips also have watchdog timer and tamper switch detection
features.
PCF2127 has an additional feature of 512 bytes battery backed
@@ -1196,6 +1196,7 @@ config RTC_DRV_MSM6242
config RTC_DRV_BQ4802
tristate "TI BQ4802"
depends on HAS_IOMEM && HAS_IOPORT
+ depends on SPARC || COMPILE_TEST
help
If you say Y here you will get support for the TI
BQ4802 RTC chip.
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index 499d89150afc9a54299a4a8dab7d8aabe60c7847..1b63111cdda2e91b880c5270dbde42c79f1a3b92 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -376,7 +376,7 @@ int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
err = rtc_valid_tm(&alarm->time);
done:
- if (err)
+ if (err && alarm->enabled)
dev_warn(&rtc->dev, "invalid alarm value: %ptR\n",
&alarm->time);
diff --git a/drivers/rtc/rtc-abx80x.c b/drivers/rtc/rtc-abx80x.c
index e08d3181bd2a66211d3de01d64983000da3f540b..fde2b8054c2ea8a49440ce8489777244fa020706 100644
--- a/drivers/rtc/rtc-abx80x.c
+++ b/drivers/rtc/rtc-abx80x.c
@@ -15,7 +15,7 @@
#include <linux/i2c.h>
#include <linux/kstrtox.h>
#include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
#include <linux/rtc.h>
#include <linux/watchdog.h>
diff --git a/drivers/rtc/rtc-armada38x.c b/drivers/rtc/rtc-armada38x.c
index b4139c200676613bd7dbc9a7feb44fea8a4409a8..569c1054d6b0bcd3be4263a35804981b94b79cf3 100644
--- a/drivers/rtc/rtc-armada38x.c
+++ b/drivers/rtc/rtc-armada38x.c
@@ -11,7 +11,6 @@
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/rtc.h>
@@ -474,7 +473,6 @@ static const struct armada38x_rtc_data armada8k_data = {
.alarm = ALARM2,
};
-#ifdef CONFIG_OF
static const struct of_device_id armada38x_rtc_of_match_table[] = {
{
.compatible = "marvell,armada-380-rtc",
@@ -487,7 +485,6 @@ static const struct of_device_id armada38x_rtc_of_match_table[] = {
{}
};
MODULE_DEVICE_TABLE(of, armada38x_rtc_of_match_table);
-#endif
static __init int armada38x_rtc_probe(struct platform_device *pdev)
{
@@ -577,7 +574,7 @@ static struct platform_driver armada38x_rtc_driver = {
.driver = {
.name = "armada38x-rtc",
.pm = &armada38x_rtc_pm_ops,
- .of_match_table = of_match_ptr(armada38x_rtc_of_match_table),
+ .of_match_table = armada38x_rtc_of_match_table,
},
};
diff --git a/drivers/rtc/rtc-aspeed.c b/drivers/rtc/rtc-aspeed.c
index a93352ed3aec99f94612248a2b4a4d2a145a3615..880b015eebaf796f68ed82c29998f345e1fd418b 100644
--- a/drivers/rtc/rtc-aspeed.c
+++ b/drivers/rtc/rtc-aspeed.c
@@ -118,7 +118,7 @@ MODULE_DEVICE_TABLE(of, aspeed_rtc_match);
static struct platform_driver aspeed_rtc_driver = {
.driver = {
.name = "aspeed-rtc",
- .of_match_table = of_match_ptr(aspeed_rtc_match),
+ .of_match_table = aspeed_rtc_match,
},
};
diff --git a/drivers/rtc/rtc-at91rm9200.c b/drivers/rtc/rtc-at91rm9200.c
index e9d17232d0a8163e37e3ee5b5d51fd1a71fcc55a..add4f71d7b3b98db7fa0e5e993add4ba0448ecdf 100644
--- a/drivers/rtc/rtc-at91rm9200.c
+++ b/drivers/rtc/rtc-at91rm9200.c
@@ -22,7 +22,6 @@
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/module.h>
-#include <linux/of_device.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/rtc.h>
@@ -642,7 +641,7 @@ static struct platform_driver at91_rtc_driver = {
.driver = {
.name = "at91_rtc",
.pm = &at91_rtc_pm_ops,
- .of_match_table = of_match_ptr(at91_rtc_dt_ids),
+ .of_match_table = at91_rtc_dt_ids,
},
};
diff --git a/drivers/rtc/rtc-at91sam9.c b/drivers/rtc/rtc-at91sam9.c
index 610f27dfc462dad34ee65e6e81c2e750af8bc2d8..f93bee96e3623330b179e459b2c41e9084709f31 100644
--- a/drivers/rtc/rtc-at91sam9.c
+++ b/drivers/rtc/rtc-at91sam9.c
@@ -534,7 +534,7 @@ static struct platform_driver at91_rtc_driver = {
.driver = {
.name = "rtc-at91sam9",
.pm = &at91_rtc_pm_ops,
- .of_match_table = of_match_ptr(at91_rtc_dt_ids),
+ .of_match_table = at91_rtc_dt_ids,
},
};
diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index c9416fe8542d7ea2800250c5d17d30f86e210bd4..228fb2d11c7091e00d9bb26b2254db2ed923c097 100644
--- a/drivers/rtc/rtc-cmos.c
+++ b/drivers/rtc/rtc-cmos.c
@@ -913,6 +913,10 @@ static inline void cmos_check_acpi_rtc_status(struct device *dev,
#define INITSECTION __init
#endif
+#define SECS_PER_DAY (24 * 60 * 60)
+#define SECS_PER_MONTH (28 * SECS_PER_DAY)
+#define SECS_PER_YEAR (365 * SECS_PER_DAY)
+
static int INITSECTION
cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
{
@@ -1019,6 +1023,13 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
goto cleanup0;
}
+ if (cmos_rtc.mon_alrm)
+ cmos_rtc.rtc->alarm_offset_max = SECS_PER_YEAR - 1;
+ else if (cmos_rtc.day_alrm)
+ cmos_rtc.rtc->alarm_offset_max = SECS_PER_MONTH - 1;
+ else
+ cmos_rtc.rtc->alarm_offset_max = SECS_PER_DAY - 1;
+
rename_region(ports, dev_name(&cmos_rtc.rtc->dev));
if (!mc146818_does_rtc_work()) {
diff --git a/drivers/rtc/rtc-cros-ec.c b/drivers/rtc/rtc-cros-ec.c
index 998ab8606f0b61ed84fd6a50ec36a219f5627109..0cd397c04ff0e03e815ecc82c9af59484d51c8a7 100644
--- a/drivers/rtc/rtc-cros-ec.c
+++ b/drivers/rtc/rtc-cros-ec.c
@@ -182,21 +182,15 @@ static int cros_ec_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
ret = cros_ec_rtc_set(cros_ec, EC_CMD_RTC_SET_ALARM, alarm_offset);
if (ret < 0) {
- if (ret == -EINVAL && alarm_offset >= SECS_PER_DAY) {
- /*
- * RTC chips on some older Chromebooks can only handle
- * alarms up to 24h in the future. Try to set an alarm
- * below that limit to avoid suspend failures.
- */
- ret = cros_ec_rtc_set(cros_ec, EC_CMD_RTC_SET_ALARM,
- SECS_PER_DAY - 1);
- }
-
- if (ret < 0) {
- dev_err(dev, "error setting alarm in %u seconds: %d\n",
- alarm_offset, ret);
- return ret;
- }
+ dev_err(dev, "error setting alarm in %u seconds: %d\n",
+ alarm_offset, ret);
+ /*
+ * The EC code returns -EINVAL if the alarm time is too
+ * far in the future. Convert it to the expected error code.
+ */
+ if (ret == -EINVAL)
+ ret = -ERANGE;
+ return ret;
}
return 0;
@@ -355,6 +349,20 @@ static int cros_ec_rtc_probe(struct platform_device *pdev)
cros_ec_rtc->rtc->ops = &cros_ec_rtc_ops;
cros_ec_rtc->rtc->range_max = U32_MAX;
+ /*
+ * The RTC on some older Chromebooks can only handle alarms less than
+ * 24 hours in the future. The only way to find out is to try to set an
+ * alarm further in the future. If that fails, assume that the RTC
+ * connected to the EC can only handle less than 24 hours of alarm
+ * window.
+ */
+ ret = cros_ec_rtc_set(cros_ec, EC_CMD_RTC_SET_ALARM, SECS_PER_DAY * 2);
+ if (ret == -EINVAL)
+ cros_ec_rtc->rtc->alarm_offset_max = SECS_PER_DAY - 1;
+
+ (void)cros_ec_rtc_set(cros_ec, EC_CMD_RTC_SET_ALARM,
+ EC_RTC_ALARM_CLEAR);
+
ret = devm_rtc_register_device(cros_ec_rtc->rtc);
if (ret)
return ret;
diff --git a/drivers/rtc/rtc-da9063.c b/drivers/rtc/rtc-da9063.c
index ee2efb4961744b77942e98f984ea08403dba5c33..2f5d60622564a0d83ec3be91bf89710f34e2b1b7 100644
--- a/drivers/rtc/rtc-da9063.c
+++ b/drivers/rtc/rtc-da9063.c
@@ -11,6 +11,7 @@
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
+#include <linux/pm_wakeirq.h>
#include <linux/regmap.h>
#include <linux/rtc.h>
#include <linux/slab.h>
@@ -496,6 +497,12 @@ static int da9063_rtc_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "Failed to request ALARM IRQ %d: %d\n",
irq_alarm, ret);
+ ret = dev_pm_set_wake_irq(&pdev->dev, irq_alarm);
+ if (ret)
+ dev_warn(&pdev->dev,
+ "Failed to set IRQ %d as a wake IRQ: %d\n",
+ irq_alarm, ret);
+
device_init_wakeup(&pdev->dev, true);
return devm_rtc_register_device(rtc->rtc_dev);
diff --git a/drivers/rtc/rtc-ds1305.c b/drivers/rtc/rtc-ds1305.c
index ed9360486953e77ad668ec44756dc4ea49677b48..d4de401548b424673dd3fa6b4b83d90fc4d6f63c 100644
--- a/drivers/rtc/rtc-ds1305.c
+++ b/drivers/rtc/rtc-ds1305.c
@@ -336,8 +336,8 @@ static int ds1305_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
/* make sure alarm fires within the next 24 hours */
if (later <= now)
return -EINVAL;
- if ((later - now) > 24 * 60 * 60)
- return -EDOM;
+ if ((later - now) > ds1305->rtc->alarm_offset_max)
+ return -ERANGE;
/* disable alarm if needed */
if (ds1305->ctrl[0] & DS1305_AEI0) {
@@ -691,6 +691,7 @@ static int ds1305_probe(struct spi_device *spi)
ds1305->rtc->ops = &ds1305_ops;
ds1305->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
ds1305->rtc->range_max = RTC_TIMESTAMP_END_2099;
+ ds1305->rtc->alarm_offset_max = 24 * 60 * 60;
ds1305_nvmem_cfg.priv = ds1305;
status = devm_rtc_register_device(ds1305->rtc);
diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c
index cb5acecc11aa4e0700a7e0b537493cac0357c061..506b7d1c23970169d891bd8c4ac4cd8cde8dc3a3 100644
--- a/drivers/rtc/rtc-ds1307.c
+++ b/drivers/rtc/rtc-ds1307.c
@@ -1744,7 +1744,7 @@ static int ds1307_probe(struct i2c_client *client)
match = device_get_match_data(&client->dev);
if (match) {
- ds1307->type = (enum ds_type)match;
+ ds1307->type = (uintptr_t)match;
chip = &chips[ds1307->type];
} else if (id) {
chip = &chips[id->driver_data];
diff --git a/drivers/rtc/rtc-ds1742.c b/drivers/rtc/rtc-ds1742.c
index a5026b0514e78d27739ef664b1f250c7e921c839..6ae8b9a294feef573183b201b37fd785b6f4d875 100644
--- a/drivers/rtc/rtc-ds1742.c
+++ b/drivers/rtc/rtc-ds1742.c
@@ -16,7 +16,6 @@
#include <linux/jiffies.h>
#include <linux/rtc.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/module.h>
diff --git a/drivers/rtc/rtc-ds2404.c b/drivers/rtc/rtc-ds2404.c
index 0480f592307e9a56f00959511a27f12ac79a6ce5..3231fd9f61da49bdaf00e46486fc34836094ee78 100644
--- a/drivers/rtc/rtc-ds2404.c
+++ b/drivers/rtc/rtc-ds2404.c
@@ -7,9 +7,8 @@
#include <linux/rtc.h>
#include <linux/types.h>
#include <linux/bcd.h>
-#include <linux/platform_data/rtc-ds2404.h>
#include <linux/delay.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/slab.h>
#include <linux/io.h>
@@ -27,164 +26,140 @@
#define DS2404_CLK 1
#define DS2404_DQ 2
-struct ds2404_gpio {
- const char *name;
- unsigned int gpio;
-};
-
struct ds2404 {
- struct ds2404_gpio *gpio;
+ struct device *dev;
+ struct gpio_desc *rst_gpiod;
+ struct gpio_desc *clk_gpiod;
+ struct gpio_desc *dq_gpiod;
struct rtc_device *rtc;
};
-static struct ds2404_gpio ds2404_gpio[] = {
- { "RTC RST", 0 },
- { "RTC CLK", 0 },
- { "RTC DQ", 0 },
-};
-
-static int ds2404_gpio_map(struct ds2404 *chip, struct platform_device *pdev,
- struct ds2404_platform_data *pdata)
+static int ds2404_gpio_map(struct ds2404 *chip, struct platform_device *pdev)
{
- int i, err;
-
- ds2404_gpio[DS2404_RST].gpio = pdata->gpio_rst;
- ds2404_gpio[DS2404_CLK].gpio = pdata->gpio_clk;
- ds2404_gpio[DS2404_DQ].gpio = pdata->gpio_dq;
-
- for (i = 0; i < ARRAY_SIZE(ds2404_gpio); i++) {
- err = gpio_request(ds2404_gpio[i].gpio, ds2404_gpio[i].name);
- if (err) {
- dev_err(&pdev->dev, "error mapping gpio %s: %d\n",
- ds2404_gpio[i].name, err);
- goto err_request;
- }
- if (i != DS2404_DQ)
- gpio_direction_output(ds2404_gpio[i].gpio, 1);
- }
+ struct device *dev = &pdev->dev;
- chip->gpio = ds2404_gpio;
- return 0;
+ /* This will de-assert RESET, declare this GPIO as GPIOD_ACTIVE_LOW */
+ chip->rst_gpiod = devm_gpiod_get(dev, "rst", GPIOD_OUT_LOW);
+ if (IS_ERR(chip->rst_gpiod))
+ return PTR_ERR(chip->rst_gpiod);
-err_request:
- while (--i >= 0)
- gpio_free(ds2404_gpio[i].gpio);
- return err;
-}
+ chip->clk_gpiod = devm_gpiod_get(dev, "clk", GPIOD_OUT_HIGH);
+ if (IS_ERR(chip->clk_gpiod))
+ return PTR_ERR(chip->clk_gpiod);
-static void ds2404_gpio_unmap(void *data)
-{
- int i;
+ chip->dq_gpiod = devm_gpiod_get(dev, "dq", GPIOD_ASIS);
+ if (IS_ERR(chip->dq_gpiod))
+ return PTR_ERR(chip->dq_gpiod);
- for (i = 0; i < ARRAY_SIZE(ds2404_gpio); i++)
- gpio_free(ds2404_gpio[i].gpio);
+ return 0;
}
-static void ds2404_reset(struct device *dev)
+static void ds2404_reset(struct ds2404 *chip)
{
- gpio_set_value(ds2404_gpio[DS2404_RST].gpio, 0);
+ gpiod_set_value(chip->rst_gpiod, 1);
udelay(1000);
- gpio_set_value(ds2404_gpio[DS2404_RST].gpio, 1);
- gpio_set_value(ds2404_gpio[DS2404_CLK].gpio, 0);
- gpio_direction_output(ds2404_gpio[DS2404_DQ].gpio, 0);
+ gpiod_set_value(chip->rst_gpiod, 0);
+ gpiod_set_value(chip->clk_gpiod, 0);
+ gpiod_direction_output(chip->dq_gpiod, 0);
udelay(10);
}
-static void ds2404_write_byte(struct device *dev, u8 byte)
+static void ds2404_write_byte(struct ds2404 *chip, u8 byte)
{
int i;
- gpio_direction_output(ds2404_gpio[DS2404_DQ].gpio, 1);
+ gpiod_direction_output(chip->dq_gpiod, 1);
for (i = 0; i < 8; i++) {
- gpio_set_value(ds2404_gpio[DS2404_DQ].gpio, byte & (1 << i));
+ gpiod_set_value(chip->dq_gpiod, byte & (1 << i));
udelay(10);
- gpio_set_value(ds2404_gpio[DS2404_CLK].gpio, 1);
+ gpiod_set_value(chip->clk_gpiod, 1);
udelay(10);
- gpio_set_value(ds2404_gpio[DS2404_CLK].gpio, 0);
+ gpiod_set_value(chip->clk_gpiod, 0);
udelay(10);
}
}
-static u8 ds2404_read_byte(struct device *dev)
+static u8 ds2404_read_byte(struct ds2404 *chip)
{
int i;
u8 ret = 0;
- gpio_direction_input(ds2404_gpio[DS2404_DQ].gpio);
+ gpiod_direction_input(chip->dq_gpiod);
for (i = 0; i < 8; i++) {
- gpio_set_value(ds2404_gpio[DS2404_CLK].gpio, 0);
+ gpiod_set_value(chip->clk_gpiod, 0);
udelay(10);
- if (gpio_get_value(ds2404_gpio[DS2404_DQ].gpio))
+ if (gpiod_get_value(chip->dq_gpiod))
ret |= 1 << i;
- gpio_set_value(ds2404_gpio[DS2404_CLK].gpio, 1);
+ gpiod_set_value(chip->clk_gpiod, 1);
udelay(10);
}
return ret;
}
-static void ds2404_read_memory(struct device *dev, u16 offset,
+static void ds2404_read_memory(struct ds2404 *chip, u16 offset,
int length, u8 *out)
{
- ds2404_reset(dev);
- ds2404_write_byte(dev, DS2404_READ_MEMORY_CMD);
- ds2404_write_byte(dev, offset & 0xff);
- ds2404_write_byte(dev, (offset >> 8) & 0xff);
+ ds2404_reset(chip);
+ ds2404_write_byte(chip, DS2404_READ_MEMORY_CMD);
+ ds2404_write_byte(chip, offset & 0xff);
+ ds2404_write_byte(chip, (offset >> 8) & 0xff);
while (length--)
- *out++ = ds2404_read_byte(dev);
+ *out++ = ds2404_read_byte(chip);
}
-static void ds2404_write_memory(struct device *dev, u16 offset,
+static void ds2404_write_memory(struct ds2404 *chip, u16 offset,
int length, u8 *out)
{
int i;
u8 ta01, ta02, es;
- ds2404_reset(dev);
- ds2404_write_byte(dev, DS2404_WRITE_SCRATCHPAD_CMD);
- ds2404_write_byte(dev, offset & 0xff);
- ds2404_write_byte(dev, (offset >> 8) & 0xff);
+ ds2404_reset(chip);
+ ds2404_write_byte(chip, DS2404_WRITE_SCRATCHPAD_CMD);
+ ds2404_write_byte(chip, offset & 0xff);
+ ds2404_write_byte(chip, (offset >> 8) & 0xff);
for (i = 0; i < length; i++)
- ds2404_write_byte(dev, out[i]);
+ ds2404_write_byte(chip, out[i]);
- ds2404_reset(dev);
- ds2404_write_byte(dev, DS2404_READ_SCRATCHPAD_CMD);
+ ds2404_reset(chip);
+ ds2404_write_byte(chip, DS2404_READ_SCRATCHPAD_CMD);
- ta01 = ds2404_read_byte(dev);
- ta02 = ds2404_read_byte(dev);
- es = ds2404_read_byte(dev);
+ ta01 = ds2404_read_byte(chip);
+ ta02 = ds2404_read_byte(chip);
+ es = ds2404_read_byte(chip);
for (i = 0; i < length; i++) {
- if (out[i] != ds2404_read_byte(dev)) {
- dev_err(dev, "read invalid data\n");
+ if (out[i] != ds2404_read_byte(chip)) {
+ dev_err(chip->dev, "read invalid data\n");
return;
}
}
- ds2404_reset(dev);
- ds2404_write_byte(dev, DS2404_COPY_SCRATCHPAD_CMD);
- ds2404_write_byte(dev, ta01);
- ds2404_write_byte(dev, ta02);
- ds2404_write_byte(dev, es);
+ ds2404_reset(chip);
+ ds2404_write_byte(chip, DS2404_COPY_SCRATCHPAD_CMD);
+ ds2404_write_byte(chip, ta01);
+ ds2404_write_byte(chip, ta02);
+ ds2404_write_byte(chip, es);
- gpio_direction_input(ds2404_gpio[DS2404_DQ].gpio);
- while (gpio_get_value(ds2404_gpio[DS2404_DQ].gpio))
+ while (gpiod_get_value(chip->dq_gpiod))
;
}
-static void ds2404_enable_osc(struct device *dev)
+static void ds2404_enable_osc(struct ds2404 *chip)
{
u8 in[1] = { 0x10 }; /* enable oscillator */
- ds2404_write_memory(dev, 0x201, 1, in);
+
+ ds2404_write_memory(chip, 0x201, 1, in);
}
static int ds2404_read_time(struct device *dev, struct rtc_time *dt)
{
+ struct ds2404 *chip = dev_get_drvdata(dev);
unsigned long time = 0;
__le32 hw_time = 0;
- ds2404_read_memory(dev, 0x203, 4, (u8 *)&hw_time);
+ ds2404_read_memory(chip, 0x203, 4, (u8 *)&hw_time);
time = le32_to_cpu(hw_time);
rtc_time64_to_tm(time, dt);
@@ -193,8 +168,9 @@ static int ds2404_read_time(struct device *dev, struct rtc_time *dt)
static int ds2404_set_time(struct device *dev, struct rtc_time *dt)
{
+ struct ds2404 *chip = dev_get_drvdata(dev);
u32 time = cpu_to_le32(rtc_tm_to_time64(dt));
- ds2404_write_memory(dev, 0x203, 4, (u8 *)&time);
+ ds2404_write_memory(chip, 0x203, 4, (u8 *)&time);
return 0;
}
@@ -205,7 +181,6 @@ static const struct rtc_class_ops ds2404_rtc_ops = {
static int rtc_probe(struct platform_device *pdev)
{
- struct ds2404_platform_data *pdata = dev_get_platdata(&pdev->dev);
struct ds2404 *chip;
int retval = -EBUSY;
@@ -213,22 +188,16 @@ static int rtc_probe(struct platform_device *pdev)
if (!chip)
return -ENOMEM;
+ chip->dev = &pdev->dev;
+
chip->rtc = devm_rtc_allocate_device(&pdev->dev);
if (IS_ERR(chip->rtc))
return PTR_ERR(chip->rtc);
- retval = ds2404_gpio_map(chip, pdev, pdata);
+ retval = ds2404_gpio_map(chip, pdev);
if (retval)
return retval;
- retval = devm_add_action_or_reset(&pdev->dev, ds2404_gpio_unmap, chip);
- if (retval)
- return retval;
-
- dev_info(&pdev->dev, "using GPIOs RST:%d, CLK:%d, DQ:%d\n",
- chip->gpio[DS2404_RST].gpio, chip->gpio[DS2404_CLK].gpio,
- chip->gpio[DS2404_DQ].gpio);
-
platform_set_drvdata(pdev, chip);
chip->rtc->ops = &ds2404_rtc_ops;
@@ -238,7 +207,7 @@ static int rtc_probe(struct platform_device *pdev)
if (retval)
return retval;
- ds2404_enable_osc(&pdev->dev);
+ ds2404_enable_osc(chip);
return 0;
}
diff --git a/drivers/rtc/rtc-fsl-ftm-alarm.c b/drivers/rtc/rtc-fsl-ftm-alarm.c
index 3d7c4077fe1c69267aa46bc1037a6f7c8bd881d0..a72c4ad0cec6e5f0c37c9e9ffcaa0c466a44ad30 100644
--- a/drivers/rtc/rtc-fsl-ftm-alarm.c
+++ b/drivers/rtc/rtc-fsl-ftm-alarm.c
@@ -11,11 +11,8 @@
#include <linux/err.h>
#include <linux/interrupt.h>
#include <linux/io.h>
-#include <linux/of_address.h>
-#include <linux/of_irq.h>
#include <linux/platform_device.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/fsl/ftm.h>
#include <linux/rtc.h>
diff --git a/drivers/rtc/rtc-isl12022.c b/drivers/rtc/rtc-isl12022.c
index a613257d1574d387e80208e092a65e764a3e84c1..4eef7afcc8bcce5f207e30eeb4b0b0dc9dd956a8 100644
--- a/drivers/rtc/rtc-isl12022.c
+++ b/drivers/rtc/rtc-isl12022.c
@@ -9,6 +9,8 @@
*/
#include <linux/bcd.h>
+#include <linux/bitfield.h>
+#include <linux/clk-provider.h>
#include <linux/err.h>
#include <linux/hwmon.h>
#include <linux/i2c.h>
@@ -31,6 +33,8 @@
#define ISL12022_REG_SR 0x07
#define ISL12022_REG_INT 0x08
+#define ISL12022_REG_PWR_VBAT 0x0a
+
#define ISL12022_REG_BETA 0x0d
#define ISL12022_REG_TEMP_L 0x28
@@ -41,6 +45,12 @@
#define ISL12022_SR_LBAT75 (1 << 1)
#define ISL12022_INT_WRTC (1 << 6)
+#define ISL12022_INT_FO_MASK GENMASK(3, 0)
+#define ISL12022_INT_FO_OFF 0x0
+#define ISL12022_INT_FO_32K 0x1
+
+#define ISL12022_REG_VB85_MASK GENMASK(5, 3)
+#define ISL12022_REG_VB75_MASK GENMASK(2, 0)
#define ISL12022_BETA_TSE (1 << 7)
@@ -141,12 +151,6 @@ static int isl12022_rtc_read_time(struct device *dev, struct rtc_time *tm)
if (ret)
return ret;
- if (buf[ISL12022_REG_SR] & (ISL12022_SR_LBAT85 | ISL12022_SR_LBAT75)) {
- dev_warn(dev,
- "voltage dropped below %u%%, date and time is not reliable.\n",
- buf[ISL12022_REG_SR] & ISL12022_SR_LBAT85 ? 85 : 75);
- }
-
dev_dbg(dev,
"raw data is sec=%02x, min=%02x, hr=%02x, mday=%02x, mon=%02x, year=%02x, wday=%02x, sr=%02x, int=%02x",
buf[ISL12022_REG_SC],
@@ -204,7 +208,34 @@ static int isl12022_rtc_set_time(struct device *dev, struct rtc_time *tm)
return regmap_bulk_write(regmap, ISL12022_REG_SC, buf, sizeof(buf));
}
+static int isl12022_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
+{
+ struct regmap *regmap = dev_get_drvdata(dev);
+ u32 user, val;
+ int ret;
+
+ switch (cmd) {
+ case RTC_VL_READ:
+ ret = regmap_read(regmap, ISL12022_REG_SR, &val);
+ if (ret)
+ return ret;
+
+ user = 0;
+ if (val & ISL12022_SR_LBAT85)
+ user |= RTC_VL_BACKUP_LOW;
+
+ if (val & ISL12022_SR_LBAT75)
+ user |= RTC_VL_BACKUP_EMPTY;
+
+ return put_user(user, (u32 __user *)arg);
+
+ default:
+ return -ENOIOCTLCMD;
+ }
+}
+
static const struct rtc_class_ops isl12022_rtc_ops = {
+ .ioctl = isl12022_rtc_ioctl,
.read_time = isl12022_rtc_read_time,
.set_time = isl12022_rtc_set_time,
};
@@ -215,10 +246,88 @@ static const struct regmap_config regmap_config = {
.use_single_write = true,
};
+static int isl12022_register_clock(struct device *dev)
+{
+ struct regmap *regmap = dev_get_drvdata(dev);
+ struct clk_hw *hw;
+ int ret;
+
+ if (!device_property_present(dev, "#clock-cells")) {
+ /*
+ * Disabling the F_OUT pin reduces the power
+ * consumption in battery mode by ~25%.
+ */
+ regmap_update_bits(regmap, ISL12022_REG_INT, ISL12022_INT_FO_MASK,
+ ISL12022_INT_FO_OFF);
+
+ return 0;
+ }
+
+ if (!IS_ENABLED(CONFIG_COMMON_CLK))
+ return 0;
+
+ /*
+ * For now, only support a fixed clock of 32768Hz (the reset default).
+ */
+ ret = regmap_update_bits(regmap, ISL12022_REG_INT,
+ ISL12022_INT_FO_MASK, ISL12022_INT_FO_32K);
+ if (ret)
+ return ret;
+
+ hw = devm_clk_hw_register_fixed_rate(dev, "isl12022", NULL, 0, 32768);
+ if (IS_ERR(hw))
+ return PTR_ERR(hw);
+
+ return devm_of_clk_add_hw_provider(dev, of_clk_hw_simple_get, hw);
+}
+
+static const u32 trip_levels[2][7] = {
+ { 2125000, 2295000, 2550000, 2805000, 3060000, 4250000, 4675000 },
+ { 1875000, 2025000, 2250000, 2475000, 2700000, 3750000, 4125000 },
+};
+
+static void isl12022_set_trip_levels(struct device *dev)
+{
+ struct regmap *regmap = dev_get_drvdata(dev);
+ u32 levels[2] = {0, 0};
+ int ret, i, j, x[2];
+ u8 val, mask;
+
+ device_property_read_u32_array(dev, "isil,battery-trip-levels-microvolt",
+ levels, 2);
+
+ for (i = 0; i < 2; i++) {
+ for (j = 0; j < ARRAY_SIZE(trip_levels[i]) - 1; j++) {
+ if (levels[i] <= trip_levels[i][j])
+ break;
+ }
+ x[i] = j;
+ }
+
+ val = FIELD_PREP(ISL12022_REG_VB85_MASK, x[0]) |
+ FIELD_PREP(ISL12022_REG_VB75_MASK, x[1]);
+ mask = ISL12022_REG_VB85_MASK | ISL12022_REG_VB75_MASK;
+
+ ret = regmap_update_bits(regmap, ISL12022_REG_PWR_VBAT, mask, val);
+ if (ret)
+ dev_warn(dev, "unable to set battery alarm levels: %d\n", ret);
+
+ /*
+ * Force a write of the TSE bit in the BETA register, in order
+ * to trigger an update of the LBAT75 and LBAT85 bits in the
+ * status register. In battery backup mode, those bits have
+ * another meaning, so without this, they may contain stale
+ * values for up to a minute after power-on.
+ */
+ regmap_write_bits(regmap, ISL12022_REG_BETA,
+ ISL12022_BETA_TSE, ISL12022_BETA_TSE);
+}
+
static int isl12022_probe(struct i2c_client *client)
{
struct rtc_device *rtc;
struct regmap *regmap;
+ int ret;
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
return -ENODEV;
@@ -231,6 +340,11 @@ static int isl12022_probe(struct i2c_client *client)
dev_set_drvdata(&client->dev, regmap);
+ ret = isl12022_register_clock(&client->dev);
+ if (ret)
+ return ret;
+
+ isl12022_set_trip_levels(&client->dev);
isl12022_hwmon_register(&client->dev);
rtc = devm_rtc_allocate_device(&client->dev);
diff --git a/drivers/rtc/rtc-isl12026.c b/drivers/rtc/rtc-isl12026.c
index 5abff5d348acdb6333e3bf1454da6292e2b0466b..2aabb9151d4c6c018d7101ec206d03897cff01d5 100644
--- a/drivers/rtc/rtc-isl12026.c
+++ b/drivers/rtc/rtc-isl12026.c
@@ -11,7 +11,6 @@
#include <linux/mutex.h>
#include <linux/nvmem-provider.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/rtc.h>
#include <linux/slab.h>
@@ -429,7 +428,7 @@ static void isl12026_force_power_modes(struct i2c_client *client)
}
}
-static int isl12026_probe_new(struct i2c_client *client)
+static int isl12026_probe(struct i2c_client *client)
{
struct isl12026 *priv;
int ret;
@@ -490,7 +489,7 @@ static struct i2c_driver isl12026_driver = {
.name = "rtc-isl12026",
.of_match_table = isl12026_dt_match,
},
- .probe = isl12026_probe_new,
+ .probe = isl12026_probe,
.remove = isl12026_remove,
};
diff --git a/drivers/rtc/rtc-isl1208.c b/drivers/rtc/rtc-isl1208.c
index b0712b4e364891656598d0d764c92398057f346d..e50c23ee1646a5d90af3aa9940dd1be0ace7c55a 100644
--- a/drivers/rtc/rtc-isl1208.c
+++ b/drivers/rtc/rtc-isl1208.c
@@ -9,7 +9,7 @@
#include <linux/clk.h>
#include <linux/i2c.h>
#include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/rtc.h>
@@ -188,7 +188,7 @@ isl1208_i2c_validate_client(struct i2c_client *client)
static int isl1208_set_xtoscb(struct i2c_client *client, int sr, int xtosb_val)
{
/* Do nothing if bit is already set to desired value */
- if ((sr & ISL1208_REG_SR_XTOSCB) == xtosb_val)
+ if (!!(sr & ISL1208_REG_SR_XTOSCB) == xtosb_val)
return 0;
if (xtosb_val)
@@ -862,17 +862,9 @@ isl1208_probe(struct i2c_client *client)
i2c_set_clientdata(client, isl1208);
/* Determine which chip we have */
- if (client->dev.of_node) {
- isl1208->config = of_device_get_match_data(&client->dev);
- if (!isl1208->config)
- return -ENODEV;
- } else {
- const struct i2c_device_id *id = i2c_match_id(isl1208_id, client);
-
- if (!id)
- return -ENODEV;
- isl1208->config = (struct isl1208_config *)id->driver_data;
- }
+ isl1208->config = i2c_get_match_data(client);
+ if (!isl1208->config)
+ return -ENODEV;
rc = isl1208_clk_present(client, "xin");
if (rc < 0)
@@ -952,7 +944,6 @@ isl1208_probe(struct i2c_client *client)
rc = isl1208_setup_irq(client, client->irq);
if (rc)
return rc;
-
} else {
clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, isl1208->rtc->features);
}
diff --git a/drivers/rtc/rtc-jz4740.c b/drivers/rtc/rtc-jz4740.c
index 36453b008139b3d8897c8df47c087d794268f650..bafa7d1b9b883a99e51582bf8ec4a797595ce3b9 100644
--- a/drivers/rtc/rtc-jz4740.c
+++ b/drivers/rtc/rtc-jz4740.c
@@ -11,7 +11,7 @@
#include <linux/iopoll.h>
#include <linux/kernel.h>
#include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/pm_wakeirq.h>
#include <linux/property.h>
@@ -349,7 +349,7 @@ static int jz4740_rtc_probe(struct platform_device *pdev)
if (!rtc)
return -ENOMEM;
- rtc->type = (enum jz4740_rtc_type)device_get_match_data(dev);
+ rtc->type = (uintptr_t)device_get_match_data(dev);
irq = platform_get_irq(pdev, 0);
if (irq < 0)
diff --git a/drivers/rtc/rtc-lpc24xx.c b/drivers/rtc/rtc-lpc24xx.c
index a4612e543f35348e3c1c2c98bb411c9e2dfc3eb2..df17c48ff086ee7228ce157f8bf54a356e8ad006 100644
--- a/drivers/rtc/rtc-lpc24xx.c
+++ b/drivers/rtc/rtc-lpc24xx.c
@@ -9,9 +9,8 @@
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
#include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/rtc.h>
diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c
index 3cc5151e098644aaf4abdfa22c66f2eda14a8c53..866489ad56d67db1b5a69c4b9e7bc294b864c7f4 100644
--- a/drivers/rtc/rtc-m41t80.c
+++ b/drivers/rtc/rtc-m41t80.c
@@ -17,7 +17,7 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
#include <linux/rtc.h>
#include <linux/slab.h>
#include <linux/mutex.h>
diff --git a/drivers/rtc/rtc-m48t86.c b/drivers/rtc/rtc-m48t86.c
index 481c9525b1ddbfdf709165d87e911f9cfa34b295..dd4a62e2d39c73b1c8c3f50a59fd4fffc0b45105 100644
--- a/drivers/rtc/rtc-m48t86.c
+++ b/drivers/rtc/rtc-m48t86.c
@@ -11,6 +11,7 @@
*/
#include <linux/module.h>
+#include <linux/mod_devicetable.h>
#include <linux/rtc.h>
#include <linux/platform_device.h>
#include <linux/bcd.h>
@@ -269,9 +270,16 @@ static int m48t86_rtc_probe(struct platform_device *pdev)
return 0;
}
+static const struct of_device_id m48t86_rtc_of_ids[] = {
+ { .compatible = "st,m48t86" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, m48t86_rtc_of_ids);
+
static struct platform_driver m48t86_rtc_platform_driver = {
.driver = {
.name = "rtc-m48t86",
+ .of_match_table = m48t86_rtc_of_ids,
},
.probe = m48t86_rtc_probe,
};
diff --git a/drivers/rtc/rtc-mpc5121.c b/drivers/rtc/rtc-mpc5121.c
index 07df43e4c4d06cf089834209a9ea602a1f64e2df..28858fcaea8f6b4fd48f7e794ff8fbcbfb4cdbb0 100644
--- a/drivers/rtc/rtc-mpc5121.c
+++ b/drivers/rtc/rtc-mpc5121.c
@@ -11,10 +11,8 @@
#include <linux/module.h>
#include <linux/rtc.h>
#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_device.h>
#include <linux/of_irq.h>
-#include <linux/of_platform.h>
+#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/slab.h>
diff --git a/drivers/rtc/rtc-mt6397.c b/drivers/rtc/rtc-mt6397.c
index 1d297af80f878818f5ee6ca00a6aab7f501b9742..1617063669cc58a4314957a98a9832856229cadc 100644
--- a/drivers/rtc/rtc-mt6397.c
+++ b/drivers/rtc/rtc-mt6397.c
@@ -9,7 +9,7 @@
#include <linux/mfd/mt6397/core.h>
#include <linux/module.h>
#include <linux/mutex.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/rtc.h>
diff --git a/drivers/rtc/rtc-mt7622.c b/drivers/rtc/rtc-mt7622.c
index 81857a457c326ad5364e6f56de576a77417d1296..094c649fc137f20929b356bf2209c57fdd842c99 100644
--- a/drivers/rtc/rtc-mt7622.c
+++ b/drivers/rtc/rtc-mt7622.c
@@ -7,9 +7,9 @@
#include <linux/clk.h>
#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/mod_devicetable.h>
#include <linux/module.h>
-#include <linux/of_address.h>
-#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/rtc.h>
diff --git a/drivers/rtc/rtc-mxc.c b/drivers/rtc/rtc-mxc.c
index 762cf03345f1450164b633a59cdefeb29c1420c2..dbb935dbbd8ab79a43d72043806d2821ca141918 100644
--- a/drivers/rtc/rtc-mxc.c
+++ b/drivers/rtc/rtc-mxc.c
@@ -11,7 +11,6 @@
#include <linux/pm_wakeirq.h>
#include <linux/clk.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#define RTC_INPUT_CLK_32768HZ (0x00 << 5)
#define RTC_INPUT_CLK_32000HZ (0x01 << 5)
diff --git a/drivers/rtc/rtc-nct3018y.c b/drivers/rtc/rtc-nct3018y.c
index a4e3f924837e0cf904a8c098ccdff895ae1e3fed..ed4e606be8e58d2779bd6aff148b388435770830 100644
--- a/drivers/rtc/rtc-nct3018y.c
+++ b/drivers/rtc/rtc-nct3018y.c
@@ -538,7 +538,7 @@ MODULE_DEVICE_TABLE(of, nct3018y_of_match);
static struct i2c_driver nct3018y_driver = {
.driver = {
.name = "rtc-nct3018y",
- .of_match_table = of_match_ptr(nct3018y_of_match),
+ .of_match_table = nct3018y_of_match,
},
.probe = nct3018y_probe,
.id_table = nct3018y_id,
diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c
index 8ae4d7824ec9f7b77fd2d8511743ca93625b857a..5b10ab06cd2e2fa7df95808768fc4606b674b08c 100644
--- a/drivers/rtc/rtc-omap.c
+++ b/drivers/rtc/rtc-omap.c
@@ -747,12 +747,12 @@ static int omap_rtc_probe(struct platform_device *pdev)
}
rtc->irq_timer = platform_get_irq(pdev, 0);
- if (rtc->irq_timer <= 0)
- return -ENOENT;
+ if (rtc->irq_timer < 0)
+ return rtc->irq_timer;
rtc->irq_alarm = platform_get_irq(pdev, 1);
- if (rtc->irq_alarm <= 0)
- return -ENOENT;
+ if (rtc->irq_alarm < 0)
+ return rtc->irq_alarm;
rtc->clk = devm_clk_get(&pdev->dev, "ext-clk");
if (!IS_ERR(rtc->clk))
diff --git a/drivers/rtc/rtc-pcf2127.c b/drivers/rtc/rtc-pcf2127.c
index ee03b04b74baa7c2740e15f672eb90bbb0a8602e..9c04c4e1a49c370ee50178b5bf7e853c62c75321 100644
--- a/drivers/rtc/rtc-pcf2127.c
+++ b/drivers/rtc/rtc-pcf2127.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
- * An I2C and SPI driver for the NXP PCF2127/29 RTC
+ * An I2C and SPI driver for the NXP PCF2127/29/31 RTC
* Copyright 2013 Til-Technologies
*
* Author: Renaud Cerrato <r.cerrato@til-technologies.fr>
@@ -8,9 +8,13 @@
* Watchdog and tamper functions
* Author: Bruno Thomsen <bruno.thomsen@gmail.com>
*
+ * PCF2131 support
+ * Author: Hugo Villeneuve <hvilleneuve@dimonoff.com>
+ *
* based on the other drivers in this same directory.
*
- * Datasheet: https://www.nxp.com/docs/en/data-sheet/PCF2127.pdf
+ * Datasheets: https://www.nxp.com/docs/en/data-sheet/PCF2127.pdf
+ * https://www.nxp.com/docs/en/data-sheet/PCF2131DS.pdf
*/
#include <linux/i2c.h>
@@ -21,6 +25,7 @@
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_irq.h>
+#include <linux/of_device.h>
#include <linux/regmap.h>
#include <linux/watchdog.h>
@@ -28,6 +33,7 @@
#define PCF2127_REG_CTRL1 0x00
#define PCF2127_BIT_CTRL1_POR_OVRD BIT(3)
#define PCF2127_BIT_CTRL1_TSF1 BIT(4)
+#define PCF2127_BIT_CTRL1_STOP BIT(5)
/* Control register 2 */
#define PCF2127_REG_CTRL2 0x01
#define PCF2127_BIT_CTRL2_AIE BIT(1)
@@ -43,20 +49,10 @@
#define PCF2127_BIT_CTRL3_BF BIT(3)
#define PCF2127_BIT_CTRL3_BTSE BIT(4)
/* Time and date registers */
-#define PCF2127_REG_SC 0x03
+#define PCF2127_REG_TIME_BASE 0x03
#define PCF2127_BIT_SC_OSF BIT(7)
-#define PCF2127_REG_MN 0x04
-#define PCF2127_REG_HR 0x05
-#define PCF2127_REG_DM 0x06
-#define PCF2127_REG_DW 0x07
-#define PCF2127_REG_MO 0x08
-#define PCF2127_REG_YR 0x09
/* Alarm registers */
-#define PCF2127_REG_ALARM_SC 0x0A
-#define PCF2127_REG_ALARM_MN 0x0B
-#define PCF2127_REG_ALARM_HR 0x0C
-#define PCF2127_REG_ALARM_DM 0x0D
-#define PCF2127_REG_ALARM_DW 0x0E
+#define PCF2127_REG_ALARM_BASE 0x0A
#define PCF2127_BIT_ALARM_AE BIT(7)
/* CLKOUT control register */
#define PCF2127_REG_CLKOUT 0x0f
@@ -68,21 +64,15 @@
#define PCF2127_BIT_WD_CTL_CD0 BIT(6)
#define PCF2127_BIT_WD_CTL_CD1 BIT(7)
#define PCF2127_REG_WD_VAL 0x11
-/* Tamper timestamp registers */
-#define PCF2127_REG_TS_CTRL 0x12
+/* Tamper timestamp1 registers */
+#define PCF2127_REG_TS1_BASE 0x12
#define PCF2127_BIT_TS_CTRL_TSOFF BIT(6)
#define PCF2127_BIT_TS_CTRL_TSM BIT(7)
-#define PCF2127_REG_TS_SC 0x13
-#define PCF2127_REG_TS_MN 0x14
-#define PCF2127_REG_TS_HR 0x15
-#define PCF2127_REG_TS_DM 0x16
-#define PCF2127_REG_TS_MO 0x17
-#define PCF2127_REG_TS_YR 0x18
/*
* RAM registers
* PCF2127 has 512 bytes general-purpose static RAM (SRAM) that is
* battery backed and can survive a power outage.
- * PCF2129 doesn't have this feature.
+ * PCF2129/31 doesn't have this feature.
*/
#define PCF2127_REG_RAM_ADDR_MSB 0x1A
#define PCF2127_REG_RAM_WRT_CMD 0x1C
@@ -90,9 +80,14 @@
/* Watchdog timer value constants */
#define PCF2127_WD_VAL_STOP 0
-#define PCF2127_WD_VAL_MIN 2
-#define PCF2127_WD_VAL_MAX 255
-#define PCF2127_WD_VAL_DEFAULT 60
+/* PCF2127/29 watchdog timer value constants */
+#define PCF2127_WD_CLOCK_HZ_X1000 1000 /* 1Hz */
+#define PCF2127_WD_MIN_HW_HEARTBEAT_MS 500
+/* PCF2131 watchdog timer value constants */
+#define PCF2131_WD_CLOCK_HZ_X1000 250 /* 1/4Hz */
+#define PCF2131_WD_MIN_HW_HEARTBEAT_MS 4000
+
+#define PCF2127_WD_DEFAULT_TIMEOUT_S 60
/* Mask for currently enabled interrupts */
#define PCF2127_CTRL1_IRQ_MASK (PCF2127_BIT_CTRL1_TSF1)
@@ -101,13 +96,117 @@
PCF2127_BIT_CTRL2_WDTF | \
PCF2127_BIT_CTRL2_TSF2)
+#define PCF2127_MAX_TS_SUPPORTED 4
+
+/* Control register 4 */
+#define PCF2131_REG_CTRL4 0x03
+#define PCF2131_BIT_CTRL4_TSF4 BIT(4)
+#define PCF2131_BIT_CTRL4_TSF3 BIT(5)
+#define PCF2131_BIT_CTRL4_TSF2 BIT(6)
+#define PCF2131_BIT_CTRL4_TSF1 BIT(7)
+/* Control register 5 */
+#define PCF2131_REG_CTRL5 0x04
+#define PCF2131_BIT_CTRL5_TSIE4 BIT(4)
+#define PCF2131_BIT_CTRL5_TSIE3 BIT(5)
+#define PCF2131_BIT_CTRL5_TSIE2 BIT(6)
+#define PCF2131_BIT_CTRL5_TSIE1 BIT(7)
+/* Software reset register */
+#define PCF2131_REG_SR_RESET 0x05
+#define PCF2131_SR_RESET_READ_PATTERN (BIT(2) | BIT(5))
+#define PCF2131_SR_RESET_CPR_CMD (PCF2131_SR_RESET_READ_PATTERN | BIT(7))
+/* Time and date registers */
+#define PCF2131_REG_TIME_BASE 0x07
+/* Alarm registers */
+#define PCF2131_REG_ALARM_BASE 0x0E
+/* CLKOUT control register */
+#define PCF2131_REG_CLKOUT 0x13
+/* Watchdog registers */
+#define PCF2131_REG_WD_CTL 0x35
+#define PCF2131_REG_WD_VAL 0x36
+/* Tamper timestamp1 registers */
+#define PCF2131_REG_TS1_BASE 0x14
+/* Tamper timestamp2 registers */
+#define PCF2131_REG_TS2_BASE 0x1B
+/* Tamper timestamp3 registers */
+#define PCF2131_REG_TS3_BASE 0x22
+/* Tamper timestamp4 registers */
+#define PCF2131_REG_TS4_BASE 0x29
+/* Interrupt mask registers */
+#define PCF2131_REG_INT_A_MASK1 0x31
+#define PCF2131_REG_INT_A_MASK2 0x32
+#define PCF2131_REG_INT_B_MASK1 0x33
+#define PCF2131_REG_INT_B_MASK2 0x34
+#define PCF2131_BIT_INT_BLIE BIT(0)
+#define PCF2131_BIT_INT_BIE BIT(1)
+#define PCF2131_BIT_INT_AIE BIT(2)
+#define PCF2131_BIT_INT_WD_CD BIT(3)
+#define PCF2131_BIT_INT_SI BIT(4)
+#define PCF2131_BIT_INT_MI BIT(5)
+#define PCF2131_CTRL2_IRQ_MASK ( \
+ PCF2127_BIT_CTRL2_AF | \
+ PCF2127_BIT_CTRL2_WDTF)
+#define PCF2131_CTRL4_IRQ_MASK ( \
+ PCF2131_BIT_CTRL4_TSF4 | \
+ PCF2131_BIT_CTRL4_TSF3 | \
+ PCF2131_BIT_CTRL4_TSF2 | \
+ PCF2131_BIT_CTRL4_TSF1)
+
+enum pcf21xx_type {
+ PCF2127,
+ PCF2129,
+ PCF2131,
+ PCF21XX_LAST_ID
+};
+
+struct pcf21xx_ts_config {
+ u8 reg_base; /* Base register to read timestamp values. */
+
+ /*
+ * If the TS input pin is driven to GND, an interrupt can be generated
+ * (supported by all variants).
+ */
+ u8 gnd_detect_reg; /* Interrupt control register address. */
+ u8 gnd_detect_bit; /* Interrupt bit. */
+
+ /*
+ * If the TS input pin is driven to an intermediate level between GND
+ * and supply, an interrupt can be generated (optional feature depending
+ * on variant).
+ */
+ u8 inter_detect_reg; /* Interrupt control register address. */
+ u8 inter_detect_bit; /* Interrupt bit. */
+
+ u8 ie_reg; /* Interrupt enable control register. */
+ u8 ie_bit; /* Interrupt enable bit. */
+};
+
+struct pcf21xx_config {
+ int type; /* IC variant */
+ int max_register;
+ unsigned int has_nvmem:1;
+ unsigned int has_bit_wd_ctl_cd0:1;
+ unsigned int wd_val_reg_readable:1; /* If watchdog value register can be read. */
+ unsigned int has_int_a_b:1; /* PCF2131 supports two interrupt outputs. */
+ u8 reg_time_base; /* Time/date base register. */
+ u8 regs_alarm_base; /* Alarm function base registers. */
+ u8 reg_wd_ctl; /* Watchdog control register. */
+ u8 reg_wd_val; /* Watchdog value register. */
+ u8 reg_clkout; /* Clkout register. */
+ int wdd_clock_hz_x1000; /* Watchdog clock in Hz multiplicated by 1000 */
+ int wdd_min_hw_heartbeat_ms;
+ unsigned int ts_count;
+ struct pcf21xx_ts_config ts[PCF2127_MAX_TS_SUPPORTED];
+ struct attribute_group attribute_group;
+};
+
struct pcf2127 {
struct rtc_device *rtc;
struct watchdog_device wdd;
struct regmap *regmap;
- time64_t ts;
- bool ts_valid;
+ const struct pcf21xx_config *cfg;
bool irq_enabled;
+ time64_t ts[PCF2127_MAX_TS_SUPPORTED]; /* Timestamp values. */
+ bool ts_valid[PCF2127_MAX_TS_SUPPORTED]; /* Timestamp valid indication. */
};
/*
@@ -117,27 +216,22 @@ struct pcf2127 {
static int pcf2127_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
struct pcf2127 *pcf2127 = dev_get_drvdata(dev);
- unsigned char buf[10];
+ unsigned char buf[7];
int ret;
/*
* Avoid reading CTRL2 register as it causes WD_VAL register
* value to reset to 0 which means watchdog is stopped.
*/
- ret = regmap_bulk_read(pcf2127->regmap, PCF2127_REG_CTRL3,
- (buf + PCF2127_REG_CTRL3),
- ARRAY_SIZE(buf) - PCF2127_REG_CTRL3);
+ ret = regmap_bulk_read(pcf2127->regmap, pcf2127->cfg->reg_time_base,
+ buf, sizeof(buf));
if (ret) {
dev_err(dev, "%s: read error\n", __func__);
return ret;
}
- if (buf[PCF2127_REG_CTRL3] & PCF2127_BIT_CTRL3_BLF)
- dev_info(dev,
- "low voltage detected, check/replace RTC battery.\n");
-
/* Clock integrity is not guaranteed when OSF flag is set. */
- if (buf[PCF2127_REG_SC] & PCF2127_BIT_SC_OSF) {
+ if (buf[0] & PCF2127_BIT_SC_OSF) {
/*
* no need clear the flag here,
* it will be cleared once the new date is saved
@@ -148,20 +242,17 @@ static int pcf2127_rtc_read_time(struct device *dev, struct rtc_time *tm)
}
dev_dbg(dev,
- "%s: raw data is cr3=%02x, sec=%02x, min=%02x, hr=%02x, "
+ "%s: raw data is sec=%02x, min=%02x, hr=%02x, "
"mday=%02x, wday=%02x, mon=%02x, year=%02x\n",
- __func__, buf[PCF2127_REG_CTRL3], buf[PCF2127_REG_SC],
- buf[PCF2127_REG_MN], buf[PCF2127_REG_HR],
- buf[PCF2127_REG_DM], buf[PCF2127_REG_DW],
- buf[PCF2127_REG_MO], buf[PCF2127_REG_YR]);
-
- tm->tm_sec = bcd2bin(buf[PCF2127_REG_SC] & 0x7F);
- tm->tm_min = bcd2bin(buf[PCF2127_REG_MN] & 0x7F);
- tm->tm_hour = bcd2bin(buf[PCF2127_REG_HR] & 0x3F); /* rtc hr 0-23 */
- tm->tm_mday = bcd2bin(buf[PCF2127_REG_DM] & 0x3F);
- tm->tm_wday = buf[PCF2127_REG_DW] & 0x07;
- tm->tm_mon = bcd2bin(buf[PCF2127_REG_MO] & 0x1F) - 1; /* rtc mn 1-12 */
- tm->tm_year = bcd2bin(buf[PCF2127_REG_YR]);
+ __func__, buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]);
+
+ tm->tm_sec = bcd2bin(buf[0] & 0x7F);
+ tm->tm_min = bcd2bin(buf[1] & 0x7F);
+ tm->tm_hour = bcd2bin(buf[2] & 0x3F);
+ tm->tm_mday = bcd2bin(buf[3] & 0x3F);
+ tm->tm_wday = buf[4] & 0x07;
+ tm->tm_mon = bcd2bin(buf[5] & 0x1F) - 1;
+ tm->tm_year = bcd2bin(buf[6]);
tm->tm_year += 100;
dev_dbg(dev, "%s: tm is secs=%d, mins=%d, hours=%d, "
@@ -198,14 +289,45 @@ static int pcf2127_rtc_set_time(struct device *dev, struct rtc_time *tm)
/* year */
buf[i++] = bin2bcd(tm->tm_year - 100);
- /* write register's data */
- err = regmap_bulk_write(pcf2127->regmap, PCF2127_REG_SC, buf, i);
+ /* Write access to time registers:
+ * PCF2127/29: no special action required.
+ * PCF2131: requires setting the STOP and CPR bits. STOP bit needs to
+ * be cleared after time registers are updated.
+ */
+ if (pcf2127->cfg->type == PCF2131) {
+ err = regmap_update_bits(pcf2127->regmap, PCF2127_REG_CTRL1,
+ PCF2127_BIT_CTRL1_STOP,
+ PCF2127_BIT_CTRL1_STOP);
+ if (err) {
+ dev_dbg(dev, "setting STOP bit failed\n");
+ return err;
+ }
+
+ err = regmap_write(pcf2127->regmap, PCF2131_REG_SR_RESET,
+ PCF2131_SR_RESET_CPR_CMD);
+ if (err) {
+ dev_dbg(dev, "sending CPR cmd failed\n");
+ return err;
+ }
+ }
+
+ /* write time register's data */
+ err = regmap_bulk_write(pcf2127->regmap, pcf2127->cfg->reg_time_base, buf, i);
if (err) {
- dev_err(dev,
- "%s: err=%d", __func__, err);
+ dev_dbg(dev, "%s: err=%d", __func__, err);
return err;
}
+ if (pcf2127->cfg->type == PCF2131) {
+ /* Clear STOP bit (PCF2131 only) after write is completed. */
+ err = regmap_update_bits(pcf2127->regmap, PCF2127_REG_CTRL1,
+ PCF2127_BIT_CTRL1_STOP, 0);
+ if (err) {
+ dev_dbg(dev, "clearing STOP bit failed\n");
+ return err;
+ }
+ }
+
return 0;
}
@@ -275,9 +397,16 @@ static int pcf2127_nvmem_write(void *priv, unsigned int offset,
static int pcf2127_wdt_ping(struct watchdog_device *wdd)
{
+ int wd_val;
struct pcf2127 *pcf2127 = watchdog_get_drvdata(wdd);
- return regmap_write(pcf2127->regmap, PCF2127_REG_WD_VAL, wdd->timeout);
+ /*
+ * Compute counter value of WATCHDG_TIM_VAL to obtain desired period
+ * in seconds, depending on the source clock frequency.
+ */
+ wd_val = ((wdd->timeout * pcf2127->cfg->wdd_clock_hz_x1000) / 1000) + 1;
+
+ return regmap_write(pcf2127->regmap, pcf2127->cfg->reg_wd_val, wd_val);
}
/*
@@ -311,7 +440,7 @@ static int pcf2127_wdt_stop(struct watchdog_device *wdd)
{
struct pcf2127 *pcf2127 = watchdog_get_drvdata(wdd);
- return regmap_write(pcf2127->regmap, PCF2127_REG_WD_VAL,
+ return regmap_write(pcf2127->regmap, pcf2127->cfg->reg_wd_val,
PCF2127_WD_VAL_STOP);
}
@@ -339,9 +468,25 @@ static const struct watchdog_ops pcf2127_watchdog_ops = {
.set_timeout = pcf2127_wdt_set_timeout,
};
+/*
+ * Compute watchdog period, t, in seconds, from the WATCHDG_TIM_VAL register
+ * value, n, and the clock frequency, f1000, in Hz x 1000.
+ *
+ * The PCF2127/29 datasheet gives t as:
+ * t = n / f
+ * The PCF2131 datasheet gives t as:
+ * t = (n - 1) / f
+ * For both variants, the watchdog is triggered when the WATCHDG_TIM_VAL reaches
+ * the value 1, and not zero. Consequently, the equation from the PCF2131
+ * datasheet seems to be the correct one for both variants.
+ */
+static int pcf2127_watchdog_get_period(int n, int f1000)
+{
+ return (1000 * (n - 1)) / f1000;
+}
+
static int pcf2127_watchdog_init(struct device *dev, struct pcf2127 *pcf2127)
{
- u32 wdd_timeout;
int ret;
if (!IS_ENABLED(CONFIG_WATCHDOG) ||
@@ -351,21 +496,35 @@ static int pcf2127_watchdog_init(struct device *dev, struct pcf2127 *pcf2127)
pcf2127->wdd.parent = dev;
pcf2127->wdd.info = &pcf2127_wdt_info;
pcf2127->wdd.ops = &pcf2127_watchdog_ops;
- pcf2127->wdd.min_timeout = PCF2127_WD_VAL_MIN;
- pcf2127->wdd.max_timeout = PCF2127_WD_VAL_MAX;
- pcf2127->wdd.timeout = PCF2127_WD_VAL_DEFAULT;
- pcf2127->wdd.min_hw_heartbeat_ms = 500;
+
+ pcf2127->wdd.min_timeout =
+ pcf2127_watchdog_get_period(
+ 2, pcf2127->cfg->wdd_clock_hz_x1000);
+ pcf2127->wdd.max_timeout =
+ pcf2127_watchdog_get_period(
+ 255, pcf2127->cfg->wdd_clock_hz_x1000);
+ pcf2127->wdd.timeout = PCF2127_WD_DEFAULT_TIMEOUT_S;
+
+ dev_dbg(dev, "%s clock = %d Hz / 1000\n", __func__,
+ pcf2127->cfg->wdd_clock_hz_x1000);
+
+ pcf2127->wdd.min_hw_heartbeat_ms = pcf2127->cfg->wdd_min_hw_heartbeat_ms;
pcf2127->wdd.status = WATCHDOG_NOWAYOUT_INIT_STATUS;
watchdog_set_drvdata(&pcf2127->wdd, pcf2127);
/* Test if watchdog timer is started by bootloader */
- ret = regmap_read(pcf2127->regmap, PCF2127_REG_WD_VAL, &wdd_timeout);
- if (ret)
- return ret;
+ if (pcf2127->cfg->wd_val_reg_readable) {
+ u32 wdd_timeout;
- if (wdd_timeout)
- set_bit(WDOG_HW_RUNNING, &pcf2127->wdd.status);
+ ret = regmap_read(pcf2127->regmap, pcf2127->cfg->reg_wd_val,
+ &wdd_timeout);
+ if (ret)
+ return ret;
+
+ if (wdd_timeout)
+ set_bit(WDOG_HW_RUNNING, &pcf2127->wdd.status);
+ }
return devm_watchdog_register_device(dev, &pcf2127->wdd);
}
@@ -386,8 +545,8 @@ static int pcf2127_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
if (ret)
return ret;
- ret = regmap_bulk_read(pcf2127->regmap, PCF2127_REG_ALARM_SC, buf,
- sizeof(buf));
+ ret = regmap_bulk_read(pcf2127->regmap, pcf2127->cfg->regs_alarm_base,
+ buf, sizeof(buf));
if (ret)
return ret;
@@ -437,8 +596,8 @@ static int pcf2127_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
buf[3] = bin2bcd(alrm->time.tm_mday);
buf[4] = PCF2127_BIT_ALARM_AE; /* Do not match on week day */
- ret = regmap_bulk_write(pcf2127->regmap, PCF2127_REG_ALARM_SC, buf,
- sizeof(buf));
+ ret = regmap_bulk_write(pcf2127->regmap, pcf2127->cfg->regs_alarm_base,
+ buf, sizeof(buf));
if (ret)
return ret;
@@ -446,38 +605,35 @@ static int pcf2127_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
}
/*
- * This function reads ctrl2 register, caller is responsible for calling
- * pcf2127_wdt_active_ping()
+ * This function reads one timestamp function data, caller is responsible for
+ * calling pcf2127_wdt_active_ping()
*/
-static int pcf2127_rtc_ts_read(struct device *dev, time64_t *ts)
+static int pcf2127_rtc_ts_read(struct device *dev, time64_t *ts,
+ int ts_id)
{
struct pcf2127 *pcf2127 = dev_get_drvdata(dev);
struct rtc_time tm;
int ret;
- unsigned char data[25];
+ unsigned char data[7];
- ret = regmap_bulk_read(pcf2127->regmap, PCF2127_REG_CTRL1, data,
- sizeof(data));
+ ret = regmap_bulk_read(pcf2127->regmap, pcf2127->cfg->ts[ts_id].reg_base,
+ 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);
+ "%s: raw data is ts_sc=%02x, ts_mn=%02x, ts_hr=%02x, ts_dm=%02x, ts_mo=%02x, ts_yr=%02x\n",
+ __func__, data[1], data[2], data[3], data[4], data[5], data[6]);
+
+ tm.tm_sec = bcd2bin(data[1] & 0x7F);
+ tm.tm_min = bcd2bin(data[2] & 0x7F);
+ tm.tm_hour = bcd2bin(data[3] & 0x3F);
+ tm.tm_mday = bcd2bin(data[4] & 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]);
+ tm.tm_mon = bcd2bin(data[5] & 0x1F) - 1;
+ tm.tm_year = bcd2bin(data[6]);
if (tm.tm_year < 70)
tm.tm_year += 100; /* assume we are in 1970...2069 */
@@ -491,47 +647,84 @@ static int pcf2127_rtc_ts_read(struct device *dev, time64_t *ts)
return 0;
};
-static void pcf2127_rtc_ts_snapshot(struct device *dev)
+static void pcf2127_rtc_ts_snapshot(struct device *dev, int ts_id)
{
struct pcf2127 *pcf2127 = dev_get_drvdata(dev);
int ret;
+ if (ts_id >= pcf2127->cfg->ts_count)
+ return;
+
/* Let userspace read the first timestamp */
- if (pcf2127->ts_valid)
+ if (pcf2127->ts_valid[ts_id])
return;
- ret = pcf2127_rtc_ts_read(dev, &pcf2127->ts);
+ ret = pcf2127_rtc_ts_read(dev, &pcf2127->ts[ts_id], ts_id);
if (!ret)
- pcf2127->ts_valid = true;
+ pcf2127->ts_valid[ts_id] = true;
}
static irqreturn_t pcf2127_rtc_irq(int irq, void *dev)
{
struct pcf2127 *pcf2127 = dev_get_drvdata(dev);
- unsigned int ctrl1, ctrl2;
+ unsigned int 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 (!(ctrl1 & PCF2127_CTRL1_IRQ_MASK || ctrl2 & PCF2127_CTRL2_IRQ_MASK))
- return IRQ_NONE;
+ if (pcf2127->cfg->ts_count == 1) {
+ /* PCF2127/29 */
+ unsigned int ctrl1;
+
+ ret = regmap_read(pcf2127->regmap, PCF2127_REG_CTRL1, &ctrl1);
+ if (ret)
+ return IRQ_NONE;
+
+ if (!(ctrl1 & PCF2127_CTRL1_IRQ_MASK || ctrl2 & PCF2127_CTRL2_IRQ_MASK))
+ return IRQ_NONE;
+
+ if (ctrl1 & PCF2127_BIT_CTRL1_TSF1 || ctrl2 & PCF2127_BIT_CTRL2_TSF2)
+ pcf2127_rtc_ts_snapshot(dev, 0);
+
+ 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);
+ } else {
+ /* PCF2131. */
+ unsigned int ctrl4;
+
+ ret = regmap_read(pcf2127->regmap, PCF2131_REG_CTRL4, &ctrl4);
+ if (ret)
+ return IRQ_NONE;
+
+ if (!(ctrl4 & PCF2131_CTRL4_IRQ_MASK || ctrl2 & PCF2131_CTRL2_IRQ_MASK))
+ return IRQ_NONE;
- if (ctrl1 & PCF2127_BIT_CTRL1_TSF1 || ctrl2 & PCF2127_BIT_CTRL2_TSF2)
- pcf2127_rtc_ts_snapshot(dev);
+ if (ctrl4 & PCF2131_CTRL4_IRQ_MASK) {
+ int i;
+ int tsf_bit = PCF2131_BIT_CTRL4_TSF1; /* Start at bit 7. */
- if (ctrl1 & PCF2127_CTRL1_IRQ_MASK)
- regmap_write(pcf2127->regmap, PCF2127_REG_CTRL1,
- ctrl1 & ~PCF2127_CTRL1_IRQ_MASK);
+ for (i = 0; i < pcf2127->cfg->ts_count; i++) {
+ if (ctrl4 & tsf_bit)
+ pcf2127_rtc_ts_snapshot(dev, i);
- if (ctrl2 & PCF2127_CTRL2_IRQ_MASK)
- regmap_write(pcf2127->regmap, PCF2127_REG_CTRL2,
- ctrl2 & ~PCF2127_CTRL2_IRQ_MASK);
+ tsf_bit = tsf_bit >> 1;
+ }
+
+ regmap_write(pcf2127->regmap, PCF2131_REG_CTRL4,
+ ctrl4 & ~PCF2131_CTRL4_IRQ_MASK);
+ }
+
+ if (ctrl2 & PCF2131_CTRL2_IRQ_MASK)
+ regmap_write(pcf2127->regmap, PCF2127_REG_CTRL2,
+ ctrl2 & ~PCF2131_CTRL2_IRQ_MASK);
+ }
if (ctrl2 & PCF2127_BIT_CTRL2_AF)
rtc_update_irq(pcf2127->rtc, 1, RTC_IRQF | RTC_AF);
@@ -552,28 +745,41 @@ static const struct rtc_class_ops pcf2127_rtc_ops = {
/* sysfs interface */
-static ssize_t timestamp0_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
+static ssize_t timestamp_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count, int ts_id)
{
struct pcf2127 *pcf2127 = dev_get_drvdata(dev->parent);
int ret;
+ if (ts_id >= pcf2127->cfg->ts_count)
+ return 0;
+
if (pcf2127->irq_enabled) {
- pcf2127->ts_valid = false;
+ pcf2127->ts_valid[ts_id] = false;
} else {
- ret = regmap_update_bits(pcf2127->regmap, PCF2127_REG_CTRL1,
- PCF2127_BIT_CTRL1_TSF1, 0);
+ /* Always clear GND interrupt bit. */
+ ret = regmap_update_bits(pcf2127->regmap,
+ pcf2127->cfg->ts[ts_id].gnd_detect_reg,
+ pcf2127->cfg->ts[ts_id].gnd_detect_bit,
+ 0);
+
if (ret) {
- dev_err(dev, "%s: update ctrl1 ret=%d\n", __func__, ret);
+ dev_err(dev, "%s: update TS gnd detect 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;
+ if (pcf2127->cfg->ts[ts_id].inter_detect_bit) {
+ /* Clear intermediate level interrupt bit if supported. */
+ ret = regmap_update_bits(pcf2127->regmap,
+ pcf2127->cfg->ts[ts_id].inter_detect_reg,
+ pcf2127->cfg->ts[ts_id].inter_detect_bit,
+ 0);
+ if (ret) {
+ dev_err(dev, "%s: update TS intermediate level detect ret=%d\n",
+ __func__, ret);
+ return ret;
+ }
}
ret = pcf2127_wdt_active_ping(&pcf2127->wdd);
@@ -582,34 +788,84 @@ static ssize_t timestamp0_store(struct device *dev,
}
return count;
+}
+
+static ssize_t timestamp0_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ return timestamp_store(dev, attr, buf, count, 0);
};
-static ssize_t timestamp0_show(struct device *dev,
- struct device_attribute *attr, char *buf)
+static ssize_t timestamp1_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ return timestamp_store(dev, attr, buf, count, 1);
+};
+
+static ssize_t timestamp2_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ return timestamp_store(dev, attr, buf, count, 2);
+};
+
+static ssize_t timestamp3_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ return timestamp_store(dev, attr, buf, count, 3);
+};
+
+static ssize_t timestamp_show(struct device *dev,
+ struct device_attribute *attr, char *buf,
+ int ts_id)
{
struct pcf2127 *pcf2127 = dev_get_drvdata(dev->parent);
- unsigned int ctrl1, ctrl2;
int ret;
time64_t ts;
+ if (ts_id >= pcf2127->cfg->ts_count)
+ return 0;
+
if (pcf2127->irq_enabled) {
- if (!pcf2127->ts_valid)
+ if (!pcf2127->ts_valid[ts_id])
return 0;
- ts = pcf2127->ts;
+ ts = pcf2127->ts[ts_id];
} else {
- ret = regmap_read(pcf2127->regmap, PCF2127_REG_CTRL1, &ctrl1);
- if (ret)
- return 0;
+ u8 valid_low = 0;
+ u8 valid_inter = 0;
+ unsigned int ctrl;
- ret = regmap_read(pcf2127->regmap, PCF2127_REG_CTRL2, &ctrl2);
+ /* Check if TS input pin is driven to GND, supported by all
+ * variants.
+ */
+ ret = regmap_read(pcf2127->regmap,
+ pcf2127->cfg->ts[ts_id].gnd_detect_reg,
+ &ctrl);
if (ret)
return 0;
- if (!(ctrl1 & PCF2127_BIT_CTRL1_TSF1) &&
- !(ctrl2 & PCF2127_BIT_CTRL2_TSF2))
+ valid_low = ctrl & pcf2127->cfg->ts[ts_id].gnd_detect_bit;
+
+ if (pcf2127->cfg->ts[ts_id].inter_detect_bit) {
+ /* Check if TS input pin is driven to intermediate level
+ * between GND and supply, if supported by variant.
+ */
+ ret = regmap_read(pcf2127->regmap,
+ pcf2127->cfg->ts[ts_id].inter_detect_reg,
+ &ctrl);
+ if (ret)
+ return 0;
+
+ valid_inter = ctrl & pcf2127->cfg->ts[ts_id].inter_detect_bit;
+ }
+
+ if (!valid_low && !valid_inter)
return 0;
- ret = pcf2127_rtc_ts_read(dev->parent, &ts);
+ ret = pcf2127_rtc_ts_read(dev->parent, &ts, ts_id);
if (ret)
return 0;
@@ -618,21 +874,227 @@ static ssize_t timestamp0_show(struct device *dev,
return ret;
}
return sprintf(buf, "%llu\n", (unsigned long long)ts);
+}
+
+static ssize_t timestamp0_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return timestamp_show(dev, attr, buf, 0);
+};
+
+static ssize_t timestamp1_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return timestamp_show(dev, attr, buf, 1);
+};
+
+static ssize_t timestamp2_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return timestamp_show(dev, attr, buf, 2);
+};
+
+static ssize_t timestamp3_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return timestamp_show(dev, attr, buf, 3);
};
static DEVICE_ATTR_RW(timestamp0);
+static DEVICE_ATTR_RW(timestamp1);
+static DEVICE_ATTR_RW(timestamp2);
+static DEVICE_ATTR_RW(timestamp3);
static struct attribute *pcf2127_attrs[] = {
&dev_attr_timestamp0.attr,
NULL
};
-static const struct attribute_group pcf2127_attr_group = {
- .attrs = pcf2127_attrs,
+static struct attribute *pcf2131_attrs[] = {
+ &dev_attr_timestamp0.attr,
+ &dev_attr_timestamp1.attr,
+ &dev_attr_timestamp2.attr,
+ &dev_attr_timestamp3.attr,
+ NULL
};
+static struct pcf21xx_config pcf21xx_cfg[] = {
+ [PCF2127] = {
+ .type = PCF2127,
+ .max_register = 0x1d,
+ .has_nvmem = 1,
+ .has_bit_wd_ctl_cd0 = 1,
+ .wd_val_reg_readable = 1,
+ .has_int_a_b = 0,
+ .reg_time_base = PCF2127_REG_TIME_BASE,
+ .regs_alarm_base = PCF2127_REG_ALARM_BASE,
+ .reg_wd_ctl = PCF2127_REG_WD_CTL,
+ .reg_wd_val = PCF2127_REG_WD_VAL,
+ .reg_clkout = PCF2127_REG_CLKOUT,
+ .wdd_clock_hz_x1000 = PCF2127_WD_CLOCK_HZ_X1000,
+ .wdd_min_hw_heartbeat_ms = PCF2127_WD_MIN_HW_HEARTBEAT_MS,
+ .ts_count = 1,
+ .ts[0] = {
+ .reg_base = PCF2127_REG_TS1_BASE,
+ .gnd_detect_reg = PCF2127_REG_CTRL1,
+ .gnd_detect_bit = PCF2127_BIT_CTRL1_TSF1,
+ .inter_detect_reg = PCF2127_REG_CTRL2,
+ .inter_detect_bit = PCF2127_BIT_CTRL2_TSF2,
+ .ie_reg = PCF2127_REG_CTRL2,
+ .ie_bit = PCF2127_BIT_CTRL2_TSIE,
+ },
+ .attribute_group = {
+ .attrs = pcf2127_attrs,
+ },
+ },
+ [PCF2129] = {
+ .type = PCF2129,
+ .max_register = 0x19,
+ .has_nvmem = 0,
+ .has_bit_wd_ctl_cd0 = 0,
+ .wd_val_reg_readable = 1,
+ .has_int_a_b = 0,
+ .reg_time_base = PCF2127_REG_TIME_BASE,
+ .regs_alarm_base = PCF2127_REG_ALARM_BASE,
+ .reg_wd_ctl = PCF2127_REG_WD_CTL,
+ .reg_wd_val = PCF2127_REG_WD_VAL,
+ .reg_clkout = PCF2127_REG_CLKOUT,
+ .wdd_clock_hz_x1000 = PCF2127_WD_CLOCK_HZ_X1000,
+ .wdd_min_hw_heartbeat_ms = PCF2127_WD_MIN_HW_HEARTBEAT_MS,
+ .ts_count = 1,
+ .ts[0] = {
+ .reg_base = PCF2127_REG_TS1_BASE,
+ .gnd_detect_reg = PCF2127_REG_CTRL1,
+ .gnd_detect_bit = PCF2127_BIT_CTRL1_TSF1,
+ .inter_detect_reg = PCF2127_REG_CTRL2,
+ .inter_detect_bit = PCF2127_BIT_CTRL2_TSF2,
+ .ie_reg = PCF2127_REG_CTRL2,
+ .ie_bit = PCF2127_BIT_CTRL2_TSIE,
+ },
+ .attribute_group = {
+ .attrs = pcf2127_attrs,
+ },
+ },
+ [PCF2131] = {
+ .type = PCF2131,
+ .max_register = 0x36,
+ .has_nvmem = 0,
+ .has_bit_wd_ctl_cd0 = 0,
+ .wd_val_reg_readable = 0,
+ .has_int_a_b = 1,
+ .reg_time_base = PCF2131_REG_TIME_BASE,
+ .regs_alarm_base = PCF2131_REG_ALARM_BASE,
+ .reg_wd_ctl = PCF2131_REG_WD_CTL,
+ .reg_wd_val = PCF2131_REG_WD_VAL,
+ .reg_clkout = PCF2131_REG_CLKOUT,
+ .wdd_clock_hz_x1000 = PCF2131_WD_CLOCK_HZ_X1000,
+ .wdd_min_hw_heartbeat_ms = PCF2131_WD_MIN_HW_HEARTBEAT_MS,
+ .ts_count = 4,
+ .ts[0] = {
+ .reg_base = PCF2131_REG_TS1_BASE,
+ .gnd_detect_reg = PCF2131_REG_CTRL4,
+ .gnd_detect_bit = PCF2131_BIT_CTRL4_TSF1,
+ .inter_detect_bit = 0,
+ .ie_reg = PCF2131_REG_CTRL5,
+ .ie_bit = PCF2131_BIT_CTRL5_TSIE1,
+ },
+ .ts[1] = {
+ .reg_base = PCF2131_REG_TS2_BASE,
+ .gnd_detect_reg = PCF2131_REG_CTRL4,
+ .gnd_detect_bit = PCF2131_BIT_CTRL4_TSF2,
+ .inter_detect_bit = 0,
+ .ie_reg = PCF2131_REG_CTRL5,
+ .ie_bit = PCF2131_BIT_CTRL5_TSIE2,
+ },
+ .ts[2] = {
+ .reg_base = PCF2131_REG_TS3_BASE,
+ .gnd_detect_reg = PCF2131_REG_CTRL4,
+ .gnd_detect_bit = PCF2131_BIT_CTRL4_TSF3,
+ .inter_detect_bit = 0,
+ .ie_reg = PCF2131_REG_CTRL5,
+ .ie_bit = PCF2131_BIT_CTRL5_TSIE3,
+ },
+ .ts[3] = {
+ .reg_base = PCF2131_REG_TS4_BASE,
+ .gnd_detect_reg = PCF2131_REG_CTRL4,
+ .gnd_detect_bit = PCF2131_BIT_CTRL4_TSF4,
+ .inter_detect_bit = 0,
+ .ie_reg = PCF2131_REG_CTRL5,
+ .ie_bit = PCF2131_BIT_CTRL5_TSIE4,
+ },
+ .attribute_group = {
+ .attrs = pcf2131_attrs,
+ },
+ },
+};
+
+/*
+ * Enable timestamp function and corresponding interrupt(s).
+ */
+static int pcf2127_enable_ts(struct device *dev, int ts_id)
+{
+ struct pcf2127 *pcf2127 = dev_get_drvdata(dev);
+ int ret;
+
+ if (ts_id >= pcf2127->cfg->ts_count) {
+ dev_err(dev, "%s: invalid tamper detection ID (%d)\n",
+ __func__, ts_id);
+ return -EINVAL;
+ }
+
+ /* Enable timestamp function. */
+ ret = regmap_update_bits(pcf2127->regmap,
+ pcf2127->cfg->ts[ts_id].reg_base,
+ PCF2127_BIT_TS_CTRL_TSOFF |
+ PCF2127_BIT_TS_CTRL_TSM,
+ PCF2127_BIT_TS_CTRL_TSM);
+ if (ret) {
+ dev_err(dev, "%s: tamper detection config (ts%d_ctrl) failed\n",
+ __func__, ts_id);
+ return ret;
+ }
+
+ /*
+ * Enable interrupt generation when TSF timestamp flag is set.
+ * Interrupt signals are open-drain outputs and can be left floating if
+ * unused.
+ */
+ ret = regmap_update_bits(pcf2127->regmap, pcf2127->cfg->ts[ts_id].ie_reg,
+ pcf2127->cfg->ts[ts_id].ie_bit,
+ pcf2127->cfg->ts[ts_id].ie_bit);
+ if (ret) {
+ dev_err(dev, "%s: tamper detection TSIE%d config failed\n",
+ __func__, ts_id);
+ return ret;
+ }
+
+ return ret;
+}
+
+/* Route all interrupt sources to INT A pin. */
+static int pcf2127_configure_interrupt_pins(struct device *dev)
+{
+ struct pcf2127 *pcf2127 = dev_get_drvdata(dev);
+ int ret;
+
+ /* Mask bits need to be cleared to enable corresponding
+ * interrupt source.
+ */
+ ret = regmap_write(pcf2127->regmap,
+ PCF2131_REG_INT_A_MASK1, 0);
+ if (ret)
+ return ret;
+
+ ret = regmap_write(pcf2127->regmap,
+ PCF2131_REG_INT_A_MASK2, 0);
+ if (ret)
+ return ret;
+
+ return ret;
+}
+
static int pcf2127_probe(struct device *dev, struct regmap *regmap,
- int alarm_irq, const char *name, bool is_pcf2127)
+ int alarm_irq, const struct pcf21xx_config *config)
{
struct pcf2127 *pcf2127;
int ret = 0;
@@ -645,6 +1107,7 @@ static int pcf2127_probe(struct device *dev, struct regmap *regmap,
return -ENOMEM;
pcf2127->regmap = regmap;
+ pcf2127->cfg = config;
dev_set_drvdata(dev, pcf2127);
@@ -656,8 +1119,16 @@ static int pcf2127_probe(struct device *dev, struct regmap *regmap,
pcf2127->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
pcf2127->rtc->range_max = RTC_TIMESTAMP_END_2099;
pcf2127->rtc->set_start_time = true; /* Sets actual start to 1970 */
- set_bit(RTC_FEATURE_ALARM_RES_2S, pcf2127->rtc->features);
- clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, pcf2127->rtc->features);
+
+ /*
+ * PCF2127/29 do not work correctly when setting alarms at 1s intervals.
+ * PCF2131 is ok.
+ */
+ if (pcf2127->cfg->type == PCF2127 || pcf2127->cfg->type == PCF2129) {
+ set_bit(RTC_FEATURE_ALARM_RES_2S, pcf2127->rtc->features);
+ clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, pcf2127->rtc->features);
+ }
+
clear_bit(RTC_FEATURE_ALARM, pcf2127->rtc->features);
if (alarm_irq > 0) {
@@ -688,7 +1159,16 @@ static int pcf2127_probe(struct device *dev, struct regmap *regmap,
set_bit(RTC_FEATURE_ALARM, pcf2127->rtc->features);
}
- if (is_pcf2127) {
+ if (pcf2127->cfg->has_int_a_b) {
+ /* Configure int A/B pins, independently of alarm_irq. */
+ ret = pcf2127_configure_interrupt_pins(dev);
+ if (ret) {
+ dev_err(dev, "failed to configure interrupt pins\n");
+ return ret;
+ }
+ }
+
+ if (pcf2127->cfg->has_nvmem) {
struct nvmem_config nvmem_cfg = {
.priv = pcf2127,
.reg_read = pcf2127_nvmem_read,
@@ -703,15 +1183,17 @@ static int pcf2127_probe(struct device *dev, struct regmap *regmap,
* The "Power-On Reset Override" facility prevents the RTC to do a reset
* after power on. For normal operation the PORO must be disabled.
*/
- regmap_clear_bits(pcf2127->regmap, PCF2127_REG_CTRL1,
+ ret = regmap_clear_bits(pcf2127->regmap, PCF2127_REG_CTRL1,
PCF2127_BIT_CTRL1_POR_OVRD);
+ if (ret < 0)
+ return ret;
- ret = regmap_read(pcf2127->regmap, PCF2127_REG_CLKOUT, &val);
+ ret = regmap_read(pcf2127->regmap, pcf2127->cfg->reg_clkout, &val);
if (ret < 0)
return ret;
if (!(val & PCF2127_BIT_CLKOUT_OTPR)) {
- ret = regmap_set_bits(pcf2127->regmap, PCF2127_REG_CLKOUT,
+ ret = regmap_set_bits(pcf2127->regmap, pcf2127->cfg->reg_clkout,
PCF2127_BIT_CLKOUT_OTPR);
if (ret < 0)
return ret;
@@ -721,20 +1203,20 @@ static int pcf2127_probe(struct device *dev, struct regmap *regmap,
/*
* Watchdog timer enabled and reset pin /RST activated when timed out.
- * Select 1Hz clock source for watchdog timer.
+ * Select 1Hz clock source for watchdog timer (1/4Hz for PCF2131).
* Note: Countdown timer disabled and not available.
- * For pca2129, pcf2129, only bit[7] is for Symbol WD_CD
+ * For pca2129, pcf2129 and pcf2131, only bit[7] is for Symbol WD_CD
* of register watchdg_tim_ctl. The bit[6] is labeled
* as T. Bits labeled as T must always be written with
* logic 0.
*/
- ret = regmap_update_bits(pcf2127->regmap, PCF2127_REG_WD_CTL,
+ ret = regmap_update_bits(pcf2127->regmap, pcf2127->cfg->reg_wd_ctl,
PCF2127_BIT_WD_CTL_CD1 |
PCF2127_BIT_WD_CTL_CD0 |
PCF2127_BIT_WD_CTL_TF1 |
PCF2127_BIT_WD_CTL_TF0,
PCF2127_BIT_WD_CTL_CD1 |
- (is_pcf2127 ? PCF2127_BIT_WD_CTL_CD0 : 0) |
+ (pcf2127->cfg->has_bit_wd_ctl_cd0 ? PCF2127_BIT_WD_CTL_CD0 : 0) |
PCF2127_BIT_WD_CTL_TF1);
if (ret) {
dev_err(dev, "%s: watchdog config (wd_ctl) failed\n", __func__);
@@ -760,34 +1242,15 @@ static int pcf2127_probe(struct device *dev, struct regmap *regmap,
}
/*
- * Enable timestamp function and store timestamp of first trigger
- * event until TSF1 and TSF2 interrupt flags are cleared.
- */
- ret = regmap_update_bits(pcf2127->regmap, PCF2127_REG_TS_CTRL,
- PCF2127_BIT_TS_CTRL_TSOFF |
- PCF2127_BIT_TS_CTRL_TSM,
- PCF2127_BIT_TS_CTRL_TSM);
- if (ret) {
- dev_err(dev, "%s: tamper detection config (ts_ctrl) failed\n",
- __func__);
- return ret;
- }
-
- /*
- * Enable interrupt generation when TSF1 or TSF2 timestamp flags
- * are set. Interrupt signal is an open-drain output and can be
- * left floating if unused.
+ * Enable timestamp functions 1 to 4.
*/
- ret = regmap_update_bits(pcf2127->regmap, PCF2127_REG_CTRL2,
- PCF2127_BIT_CTRL2_TSIE,
- PCF2127_BIT_CTRL2_TSIE);
- if (ret) {
- dev_err(dev, "%s: tamper detection config (ctrl2) failed\n",
- __func__);
- return ret;
+ for (int i = 0; i < pcf2127->cfg->ts_count; i++) {
+ ret = pcf2127_enable_ts(dev, i);
+ if (ret)
+ return ret;
}
- ret = rtc_add_group(pcf2127->rtc, &pcf2127_attr_group);
+ ret = rtc_add_group(pcf2127->rtc, &pcf2127->cfg->attribute_group);
if (ret) {
dev_err(dev, "%s: tamper sysfs registering failed\n",
__func__);
@@ -799,9 +1262,10 @@ static int pcf2127_probe(struct device *dev, struct regmap *regmap,
#ifdef CONFIG_OF
static const struct of_device_id pcf2127_of_match[] = {
- { .compatible = "nxp,pcf2127" },
- { .compatible = "nxp,pcf2129" },
- { .compatible = "nxp,pca2129" },
+ { .compatible = "nxp,pcf2127", .data = &pcf21xx_cfg[PCF2127] },
+ { .compatible = "nxp,pcf2129", .data = &pcf21xx_cfg[PCF2129] },
+ { .compatible = "nxp,pca2129", .data = &pcf21xx_cfg[PCF2129] },
+ { .compatible = "nxp,pcf2131", .data = &pcf21xx_cfg[PCF2131] },
{}
};
MODULE_DEVICE_TABLE(of, pcf2127_of_match);
@@ -886,26 +1350,41 @@ static const struct regmap_bus pcf2127_i2c_regmap = {
static struct i2c_driver pcf2127_i2c_driver;
static const struct i2c_device_id pcf2127_i2c_id[] = {
- { "pcf2127", 1 },
- { "pcf2129", 0 },
- { "pca2129", 0 },
+ { "pcf2127", PCF2127 },
+ { "pcf2129", PCF2129 },
+ { "pca2129", PCF2129 },
+ { "pcf2131", PCF2131 },
{ }
};
MODULE_DEVICE_TABLE(i2c, pcf2127_i2c_id);
static int pcf2127_i2c_probe(struct i2c_client *client)
{
- const struct i2c_device_id *id = i2c_match_id(pcf2127_i2c_id, client);
struct regmap *regmap;
- static const struct regmap_config config = {
+ static struct regmap_config config = {
.reg_bits = 8,
.val_bits = 8,
- .max_register = 0x1d,
};
+ const struct pcf21xx_config *variant;
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
return -ENODEV;
+ if (client->dev.of_node) {
+ variant = of_device_get_match_data(&client->dev);
+ if (!variant)
+ return -ENODEV;
+ } else {
+ enum pcf21xx_type type =
+ i2c_match_id(pcf2127_i2c_id, client)->driver_data;
+
+ if (type >= PCF21XX_LAST_ID)
+ return -ENODEV;
+ variant = &pcf21xx_cfg[type];
+ }
+
+ config.max_register = variant->max_register,
+
regmap = devm_regmap_init(&client->dev, &pcf2127_i2c_regmap,
&client->dev, &config);
if (IS_ERR(regmap)) {
@@ -914,8 +1393,7 @@ static int pcf2127_i2c_probe(struct i2c_client *client)
return PTR_ERR(regmap);
}
- return pcf2127_probe(&client->dev, regmap, client->irq,
- pcf2127_i2c_driver.driver.name, id->driver_data);
+ return pcf2127_probe(&client->dev, regmap, client->irq, variant);
}
static struct i2c_driver pcf2127_i2c_driver = {
@@ -953,17 +1431,32 @@ static void pcf2127_i2c_unregister_driver(void)
#if IS_ENABLED(CONFIG_SPI_MASTER)
static struct spi_driver pcf2127_spi_driver;
+static const struct spi_device_id pcf2127_spi_id[];
static int pcf2127_spi_probe(struct spi_device *spi)
{
- static const struct regmap_config config = {
+ static struct regmap_config config = {
.reg_bits = 8,
.val_bits = 8,
.read_flag_mask = 0xa0,
.write_flag_mask = 0x20,
- .max_register = 0x1d,
};
struct regmap *regmap;
+ const struct pcf21xx_config *variant;
+
+ if (spi->dev.of_node) {
+ variant = of_device_get_match_data(&spi->dev);
+ if (!variant)
+ return -ENODEV;
+ } else {
+ enum pcf21xx_type type = spi_get_device_id(spi)->driver_data;
+
+ if (type >= PCF21XX_LAST_ID)
+ return -ENODEV;
+ variant = &pcf21xx_cfg[type];
+ }
+
+ config.max_register = variant->max_register,
regmap = devm_regmap_init_spi(spi, &config);
if (IS_ERR(regmap)) {
@@ -972,15 +1465,14 @@ static int pcf2127_spi_probe(struct spi_device *spi)
return PTR_ERR(regmap);
}
- return pcf2127_probe(&spi->dev, regmap, spi->irq,
- pcf2127_spi_driver.driver.name,
- spi_get_device_id(spi)->driver_data);
+ return pcf2127_probe(&spi->dev, regmap, spi->irq, variant);
}
static const struct spi_device_id pcf2127_spi_id[] = {
- { "pcf2127", 1 },
- { "pcf2129", 0 },
- { "pca2129", 0 },
+ { "pcf2127", PCF2127 },
+ { "pcf2129", PCF2129 },
+ { "pca2129", PCF2129 },
+ { "pcf2131", PCF2131 },
{ }
};
MODULE_DEVICE_TABLE(spi, pcf2127_spi_id);
@@ -1045,5 +1537,5 @@ static void __exit pcf2127_exit(void)
module_exit(pcf2127_exit)
MODULE_AUTHOR("Renaud Cerrato <r.cerrato@til-technologies.fr>");
-MODULE_DESCRIPTION("NXP PCF2127/29 RTC driver");
+MODULE_DESCRIPTION("NXP PCF2127/29/31 RTC driver");
MODULE_LICENSE("GPL v2");
diff --git a/drivers/rtc/rtc-pcf85063.c b/drivers/rtc/rtc-pcf85063.c
index e517abfaee2a03d64882add2177e736952b42cfa..fdbc07f14036aff0399c15adf71d89a30fe7e2cb 100644
--- a/drivers/rtc/rtc-pcf85063.c
+++ b/drivers/rtc/rtc-pcf85063.c
@@ -14,7 +14,7 @@
#include <linux/bcd.h>
#include <linux/rtc.h>
#include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
#include <linux/pm_wakeirq.h>
#include <linux/regmap.h>
@@ -514,49 +514,40 @@ static struct clk *pcf85063_clkout_register_clk(struct pcf85063 *pcf85063)
}
#endif
-enum pcf85063_type {
- PCF85063,
- PCF85063TP,
- PCF85063A,
- RV8263,
- PCF85063_LAST_ID
+static const struct pcf85063_config config_pcf85063 = {
+ .regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0x0a,
+ },
};
-static struct pcf85063_config pcf85063_cfg[] = {
- [PCF85063] = {
- .regmap = {
- .reg_bits = 8,
- .val_bits = 8,
- .max_register = 0x0a,
- },
- },
- [PCF85063TP] = {
- .regmap = {
- .reg_bits = 8,
- .val_bits = 8,
- .max_register = 0x0a,
- },
- },
- [PCF85063A] = {
- .regmap = {
- .reg_bits = 8,
- .val_bits = 8,
- .max_register = 0x11,
- },
- .has_alarms = 1,
+static const struct pcf85063_config config_pcf85063tp = {
+ .regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0x0a,
},
- [RV8263] = {
- .regmap = {
- .reg_bits = 8,
- .val_bits = 8,
- .max_register = 0x11,
- },
- .has_alarms = 1,
- .force_cap_7000 = 1,
+};
+
+static const struct pcf85063_config config_pcf85063a = {
+ .regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0x11,
},
+ .has_alarms = 1,
};
-static const struct i2c_device_id pcf85063_ids[];
+static const struct pcf85063_config config_rv8263 = {
+ .regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0x11,
+ },
+ .has_alarms = 1,
+ .force_cap_7000 = 1,
+};
static int pcf85063_probe(struct i2c_client *client)
{
@@ -579,17 +570,9 @@ static int pcf85063_probe(struct i2c_client *client)
if (!pcf85063)
return -ENOMEM;
- if (client->dev.of_node) {
- config = of_device_get_match_data(&client->dev);
- if (!config)
- return -ENODEV;
- } else {
- enum pcf85063_type type =
- i2c_match_id(pcf85063_ids, client)->driver_data;
- if (type >= PCF85063_LAST_ID)
- return -ENODEV;
- config = &pcf85063_cfg[type];
- }
+ config = i2c_get_match_data(client);
+ if (!config)
+ return -ENODEV;
pcf85063->regmap = devm_regmap_init_i2c(client, &config->regmap);
if (IS_ERR(pcf85063->regmap))
@@ -655,22 +638,22 @@ static int pcf85063_probe(struct i2c_client *client)
}
static const struct i2c_device_id pcf85063_ids[] = {
- { "pca85073a", PCF85063A },
- { "pcf85063", PCF85063 },
- { "pcf85063tp", PCF85063TP },
- { "pcf85063a", PCF85063A },
- { "rv8263", RV8263 },
+ { "pca85073a", .driver_data = (kernel_ulong_t)&config_pcf85063a },
+ { "pcf85063", .driver_data = (kernel_ulong_t)&config_pcf85063 },
+ { "pcf85063tp", .driver_data = (kernel_ulong_t)&config_pcf85063tp },
+ { "pcf85063a", .driver_data = (kernel_ulong_t)&config_pcf85063a },
+ { "rv8263", .driver_data = (kernel_ulong_t)&config_rv8263 },
{}
};
MODULE_DEVICE_TABLE(i2c, pcf85063_ids);
#ifdef CONFIG_OF
static const struct of_device_id pcf85063_of_match[] = {
- { .compatible = "nxp,pca85073a", .data = &pcf85063_cfg[PCF85063A] },
- { .compatible = "nxp,pcf85063", .data = &pcf85063_cfg[PCF85063] },
- { .compatible = "nxp,pcf85063tp", .data = &pcf85063_cfg[PCF85063TP] },
- { .compatible = "nxp,pcf85063a", .data = &pcf85063_cfg[PCF85063A] },
- { .compatible = "microcrystal,rv8263", .data = &pcf85063_cfg[RV8263] },
+ { .compatible = "nxp,pca85073a", .data = &config_pcf85063a },
+ { .compatible = "nxp,pcf85063", .data = &config_pcf85063 },
+ { .compatible = "nxp,pcf85063tp", .data = &config_pcf85063tp },
+ { .compatible = "nxp,pcf85063a", .data = &config_pcf85063a },
+ { .compatible = "microcrystal,rv8263", .data = &config_rv8263 },
{}
};
MODULE_DEVICE_TABLE(of, pcf85063_of_match);
diff --git a/drivers/rtc/rtc-pcf85363.c b/drivers/rtc/rtc-pcf85363.c
index 65b8b1338dbb0b607d651df507bf43097d3debee..06194674d71c57510cf1747e8fae45c32e14f84c 100644
--- a/drivers/rtc/rtc-pcf85363.c
+++ b/drivers/rtc/rtc-pcf85363.c
@@ -15,7 +15,6 @@
#include <linux/errno.h>
#include <linux/bcd.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/regmap.h>
/*
@@ -403,6 +402,7 @@ static int pcf85363_probe(struct i2c_client *client)
},
};
int ret, i, err;
+ bool wakeup_source;
if (data)
config = data;
@@ -432,25 +432,36 @@ static int pcf85363_probe(struct i2c_client *client)
pcf85363->rtc->ops = &rtc_ops;
pcf85363->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
pcf85363->rtc->range_max = RTC_TIMESTAMP_END_2099;
- clear_bit(RTC_FEATURE_ALARM, pcf85363->rtc->features);
+
+ wakeup_source = device_property_read_bool(&client->dev,
+ "wakeup-source");
+ if (client->irq > 0 || wakeup_source) {
+ regmap_write(pcf85363->regmap, CTRL_FLAGS, 0);
+ regmap_update_bits(pcf85363->regmap, CTRL_PIN_IO,
+ PIN_IO_INTA_OUT, PIN_IO_INTAPM);
+ }
if (client->irq > 0) {
unsigned long irqflags = IRQF_TRIGGER_LOW;
if (dev_fwnode(&client->dev))
irqflags = 0;
-
- regmap_write(pcf85363->regmap, CTRL_FLAGS, 0);
- regmap_update_bits(pcf85363->regmap, CTRL_PIN_IO,
- PIN_IO_INTA_OUT, PIN_IO_INTAPM);
ret = devm_request_threaded_irq(&client->dev, client->irq,
NULL, pcf85363_rtc_handle_irq,
irqflags | IRQF_ONESHOT,
"pcf85363", client);
- if (ret)
- dev_warn(&client->dev, "unable to request IRQ, alarms disabled\n");
- else
- set_bit(RTC_FEATURE_ALARM, pcf85363->rtc->features);
+ if (ret) {
+ dev_warn(&client->dev,
+ "unable to request IRQ, alarms disabled\n");
+ client->irq = 0;
+ }
+ }
+
+ if (client->irq > 0 || wakeup_source) {
+ device_init_wakeup(&client->dev, true);
+ set_bit(RTC_FEATURE_ALARM, pcf85363->rtc->features);
+ } else {
+ clear_bit(RTC_FEATURE_ALARM, pcf85363->rtc->features);
}
ret = devm_rtc_register_device(pcf85363->rtc);
diff --git a/drivers/rtc/rtc-pxa.c b/drivers/rtc/rtc-pxa.c
index eeacf480cf3621a0576a7e800b9adea88493534e..e400c78252e8276f427def6ee34a5bf8fd9dccb1 100644
--- a/drivers/rtc/rtc-pxa.c
+++ b/drivers/rtc/rtc-pxa.c
@@ -14,7 +14,6 @@
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include "rtc-sa1100.h"
diff --git a/drivers/rtc/rtc-rs5c372.c b/drivers/rtc/rtc-rs5c372.c
index a5a6c8772ecd4beeb57498bf998c3460d13d3ba9..f8fab0205f8cc659932870ce15c0c3137ebbcccf 100644
--- a/drivers/rtc/rtc-rs5c372.c
+++ b/drivers/rtc/rtc-rs5c372.c
@@ -12,7 +12,7 @@
#include <linux/bcd.h>
#include <linux/slab.h>
#include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
/*
* Ricoh has a family of I2C based RTCs, which differ only slightly from
@@ -826,8 +826,7 @@ static int rs5c372_probe(struct i2c_client *client)
rs5c372->client = client;
i2c_set_clientdata(client, rs5c372);
if (client->dev.of_node) {
- rs5c372->type = (enum rtc_type)
- of_device_get_match_data(&client->dev);
+ rs5c372->type = (uintptr_t)of_device_get_match_data(&client->dev);
} else {
const struct i2c_device_id *id = i2c_match_id(rs5c372_id, client);
rs5c372->type = id->driver_data;
diff --git a/drivers/rtc/rtc-rv3028.c b/drivers/rtc/rtc-rv3028.c
index 076e56f4e01a524e56c34a54f0fd8e7a7d8d5e6c..2f001c59c61d54610a147bb2e7d1b24c26894e36 100644
--- a/drivers/rtc/rtc-rv3028.c
+++ b/drivers/rtc/rtc-rv3028.c
@@ -17,7 +17,7 @@
#include <linux/kernel.h>
#include <linux/log2.h>
#include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
#include <linux/regmap.h>
#include <linux/rtc.h>
@@ -855,11 +855,68 @@ static const struct regmap_config regmap_config = {
.max_register = 0x37,
};
+static u8 rv3028_set_trickle_charger(struct rv3028_data *rv3028,
+ struct i2c_client *client)
+{
+ int ret, val_old, val;
+ u32 ohms, chargeable;
+
+ ret = regmap_read(rv3028->regmap, RV3028_BACKUP, &val_old);
+ if (ret < 0)
+ return ret;
+
+ /* mask out only trickle charger bits */
+ val_old = val_old & (RV3028_BACKUP_TCE | RV3028_BACKUP_TCR_MASK);
+ val = val_old;
+
+ /* setup trickle charger */
+ if (!device_property_read_u32(&client->dev, "trickle-resistor-ohms",
+ &ohms)) {
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(rv3028_trickle_resistors); i++)
+ if (ohms == rv3028_trickle_resistors[i])
+ break;
+
+ if (i < ARRAY_SIZE(rv3028_trickle_resistors)) {
+ /* enable trickle charger and its resistor */
+ val = RV3028_BACKUP_TCE | i;
+ } else {
+ dev_warn(&client->dev, "invalid trickle resistor value\n");
+ }
+ }
+
+ if (!device_property_read_u32(&client->dev, "aux-voltage-chargeable",
+ &chargeable)) {
+ switch (chargeable) {
+ case 0:
+ val &= ~RV3028_BACKUP_TCE;
+ break;
+ case 1:
+ val |= RV3028_BACKUP_TCE;
+ break;
+ default:
+ dev_warn(&client->dev,
+ "unsupported aux-voltage-chargeable value\n");
+ break;
+ }
+ }
+
+ /* only update EEPROM if changes are necessary */
+ if (val_old != val) {
+ ret = rv3028_update_cfg(rv3028, RV3028_BACKUP, RV3028_BACKUP_TCE |
+ RV3028_BACKUP_TCR_MASK, val);
+ if (ret)
+ return ret;
+ }
+
+ return ret;
+}
+
static int rv3028_probe(struct i2c_client *client)
{
struct rv3028_data *rv3028;
int ret, status;
- u32 ohms;
struct nvmem_config nvmem_cfg = {
.name = "rv3028_nvram",
.word_size = 1,
@@ -937,24 +994,9 @@ static int rv3028_probe(struct i2c_client *client)
if (ret)
return ret;
- /* setup trickle charger */
- if (!device_property_read_u32(&client->dev, "trickle-resistor-ohms",
- &ohms)) {
- int i;
-
- for (i = 0; i < ARRAY_SIZE(rv3028_trickle_resistors); i++)
- if (ohms == rv3028_trickle_resistors[i])
- break;
-
- if (i < ARRAY_SIZE(rv3028_trickle_resistors)) {
- ret = rv3028_update_cfg(rv3028, RV3028_BACKUP, RV3028_BACKUP_TCE |
- RV3028_BACKUP_TCR_MASK, RV3028_BACKUP_TCE | i);
- if (ret)
- return ret;
- } else {
- dev_warn(&client->dev, "invalid trickle resistor value\n");
- }
- }
+ ret = rv3028_set_trickle_charger(rv3028, client);
+ if (ret)
+ return ret;
ret = rtc_add_group(rv3028->rtc, &rv3028_attr_group);
if (ret)
diff --git a/drivers/rtc/rtc-rv3032.c b/drivers/rtc/rtc-rv3032.c
index 6b8eb2039a33368b3d203e20e1139953fadb250c..35b2e36b426a0de0469119e7ce729e7b87fc7bbf 100644
--- a/drivers/rtc/rtc-rv3032.c
+++ b/drivers/rtc/rtc-rv3032.c
@@ -19,7 +19,7 @@
#include <linux/kernel.h>
#include <linux/log2.h>
#include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
#include <linux/regmap.h>
#include <linux/rtc.h>
diff --git a/drivers/rtc/rtc-rv8803.c b/drivers/rtc/rtc-rv8803.c
index 98679cae13e8409ae0d080e2e42fa886c3d8e1a1..1a3ec1bb5b8148dd945ad127f45e657cd4c5a882 100644
--- a/drivers/rtc/rtc-rv8803.c
+++ b/drivers/rtc/rtc-rv8803.c
@@ -15,7 +15,7 @@
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
#include <linux/rtc.h>
#define RV8803_I2C_TRY_COUNT 4
@@ -645,8 +645,7 @@ static int rv8803_probe(struct i2c_client *client)
mutex_init(&rv8803->flags_lock);
rv8803->client = client;
if (client->dev.of_node) {
- rv8803->type = (enum rv8803_type)
- of_device_get_match_data(&client->dev);
+ rv8803->type = (uintptr_t)of_device_get_match_data(&client->dev);
} else {
const struct i2c_device_id *id = i2c_match_id(rv8803_id, client);
diff --git a/drivers/rtc/rtc-rx6110.c b/drivers/rtc/rtc-rx6110.c
index 8702db6096ba4e7cb6c6a5f7a30233bc7395250e..834274db8c3fd3d2d8a98a639d77c75a4c0b1529 100644
--- a/drivers/rtc/rtc-rx6110.c
+++ b/drivers/rtc/rtc-rx6110.c
@@ -13,7 +13,6 @@
#include <linux/regmap.h>
#include <linux/rtc.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/spi/spi.h>
#include <linux/i2c.h>
diff --git a/drivers/rtc/rtc-rx8581.c b/drivers/rtc/rtc-rx8581.c
index 82881fd2e14a1aa844182ac9cd5d05e481d5f192..48efd61a114d40a59aed15087086ff37c529b225 100644
--- a/drivers/rtc/rtc-rx8581.c
+++ b/drivers/rtc/rtc-rx8581.c
@@ -13,7 +13,6 @@
#include <linux/i2c.h>
#include <linux/bcd.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/regmap.h>
#include <linux/rtc.h>
#include <linux/log2.h>
diff --git a/drivers/rtc/rtc-rzn1.c b/drivers/rtc/rtc-rzn1.c
index dca736caba85224454ca929601942c6984192490..56ebbd4d04814715c61ae1144220446d1fa403d7 100644
--- a/drivers/rtc/rtc-rzn1.c
+++ b/drivers/rtc/rtc-rzn1.c
@@ -15,7 +15,7 @@
#include <linux/init.h>
#include <linux/iopoll.h>
#include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/rtc.h>
@@ -227,7 +227,7 @@ static int rzn1_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
return ret;
/* We cannot set alarms more than one week ahead */
- farest = rtc_tm_to_time64(&tm_now) + (7 * 86400);
+ farest = rtc_tm_to_time64(&tm_now) + rtc->rtcdev->alarm_offset_max;
alarm = rtc_tm_to_time64(tm);
if (time_after(alarm, farest))
return -ERANGE;
@@ -351,6 +351,7 @@ static int rzn1_rtc_probe(struct platform_device *pdev)
rtc->rtcdev->range_min = RTC_TIMESTAMP_BEGIN_2000;
rtc->rtcdev->range_max = RTC_TIMESTAMP_END_2099;
+ rtc->rtcdev->alarm_offset_max = 7 * 86400;
rtc->rtcdev->ops = &rzn1_rtc_ops;
set_bit(RTC_FEATURE_ALARM_RES_MINUTE, rtc->rtcdev->features);
clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, rtc->rtcdev->features);
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index 70e1a18e5efdfa8db211bda90199483b935b0991..282238818f63bd7f07b79dd834468f9dc44a72cf 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -23,7 +23,6 @@
#include <linux/log2.h>
#include <linux/slab.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/uaccess.h>
#include <linux/io.h>
diff --git a/drivers/rtc/rtc-stm32.c b/drivers/rtc/rtc-stm32.c
index 3d36e11cff80c291fc8197612ab4e0f672c59a2f..76753c71d92eef3e1682abb3560026864bb6a962 100644
--- a/drivers/rtc/rtc-stm32.c
+++ b/drivers/rtc/rtc-stm32.c
@@ -6,11 +6,13 @@
#include <linux/bcd.h>
#include <linux/clk.h>
+#include <linux/errno.h>
#include <linux/iopoll.h>
#include <linux/ioport.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
#include <linux/pm_wakeirq.h>
#include <linux/regmap.h>
#include <linux/rtc.h>
@@ -89,6 +91,9 @@
/* Max STM32 RTC register offset is 0x3FC */
#define UNDEF_REG 0xFFFF
+/* STM32 RTC driver time helpers */
+#define SEC_PER_DAY (24 * 60 * 60)
+
struct stm32_rtc;
struct stm32_rtc_registers {
@@ -114,6 +119,7 @@ struct stm32_rtc_data {
void (*clear_events)(struct stm32_rtc *rtc, unsigned int flags);
bool has_pclk;
bool need_dbp;
+ bool need_accuracy;
};
struct stm32_rtc {
@@ -158,10 +164,9 @@ static int stm32_rtc_enter_init_mode(struct stm32_rtc *rtc)
* slowest rtc_ck frequency may be 32kHz and highest should be
* 1MHz, we poll every 10 us with a timeout of 100ms.
*/
- return readl_relaxed_poll_timeout_atomic(
- rtc->base + regs->isr,
- isr, (isr & STM32_RTC_ISR_INITF),
- 10, 100000);
+ return readl_relaxed_poll_timeout_atomic(rtc->base + regs->isr, isr,
+ (isr & STM32_RTC_ISR_INITF),
+ 10, 100000);
}
return 0;
@@ -425,40 +430,42 @@ static int stm32_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
return 0;
}
-static int stm32_rtc_valid_alrm(struct stm32_rtc *rtc, struct rtc_time *tm)
+static int stm32_rtc_valid_alrm(struct device *dev, struct rtc_time *tm)
{
- const struct stm32_rtc_registers *regs = &rtc->data->regs;
- int cur_day, cur_mon, cur_year, cur_hour, cur_min, cur_sec;
- unsigned int dr = readl_relaxed(rtc->base + regs->dr);
- unsigned int tr = readl_relaxed(rtc->base + regs->tr);
-
- cur_day = (dr & STM32_RTC_DR_DATE) >> STM32_RTC_DR_DATE_SHIFT;
- cur_mon = (dr & STM32_RTC_DR_MONTH) >> STM32_RTC_DR_MONTH_SHIFT;
- cur_year = (dr & STM32_RTC_DR_YEAR) >> STM32_RTC_DR_YEAR_SHIFT;
- cur_sec = (tr & STM32_RTC_TR_SEC) >> STM32_RTC_TR_SEC_SHIFT;
- cur_min = (tr & STM32_RTC_TR_MIN) >> STM32_RTC_TR_MIN_SHIFT;
- cur_hour = (tr & STM32_RTC_TR_HOUR) >> STM32_RTC_TR_HOUR_SHIFT;
+ static struct rtc_time now;
+ time64_t max_alarm_time64;
+ int max_day_forward;
+ int next_month;
+ int next_year;
/*
* Assuming current date is M-D-Y H:M:S.
* RTC alarm can't be set on a specific month and year.
* So the valid alarm range is:
* M-D-Y H:M:S < alarm <= (M+1)-D-Y H:M:S
- * with a specific case for December...
*/
- if ((((tm->tm_year > cur_year) &&
- (tm->tm_mon == 0x1) && (cur_mon == 0x12)) ||
- ((tm->tm_year == cur_year) &&
- (tm->tm_mon <= cur_mon + 1))) &&
- ((tm->tm_mday > cur_day) ||
- ((tm->tm_mday == cur_day) &&
- ((tm->tm_hour > cur_hour) ||
- ((tm->tm_hour == cur_hour) && (tm->tm_min > cur_min)) ||
- ((tm->tm_hour == cur_hour) && (tm->tm_min == cur_min) &&
- (tm->tm_sec >= cur_sec))))))
- return 0;
+ stm32_rtc_read_time(dev, &now);
+
+ /*
+ * Find the next month and the year of the next month.
+ * Note: tm_mon and next_month are from 0 to 11
+ */
+ next_month = now.tm_mon + 1;
+ if (next_month == 12) {
+ next_month = 0;
+ next_year = now.tm_year + 1;
+ } else {
+ next_year = now.tm_year;
+ }
- return -EINVAL;
+ /* Find the maximum limit of alarm in days. */
+ max_day_forward = rtc_month_days(now.tm_mon, now.tm_year)
+ - now.tm_mday
+ + min(rtc_month_days(next_month, next_year), now.tm_mday);
+
+ /* Convert to timestamp and compare the alarm time and its upper limit */
+ max_alarm_time64 = rtc_tm_to_time64(&now) + max_day_forward * SEC_PER_DAY;
+ return rtc_tm_to_time64(tm) <= max_alarm_time64 ? 0 : -EINVAL;
}
static int stm32_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
@@ -469,17 +476,17 @@ static int stm32_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
unsigned int cr, isr, alrmar;
int ret = 0;
- tm2bcd(tm);
-
/*
* RTC alarm can't be set on a specific date, unless this date is
* up to the same day of month next month.
*/
- if (stm32_rtc_valid_alrm(rtc, tm) < 0) {
+ if (stm32_rtc_valid_alrm(dev, tm) < 0) {
dev_err(dev, "Alarm can be set only on upcoming month.\n");
return -EINVAL;
}
+ tm2bcd(tm);
+
alrmar = 0;
/* tm_year and tm_mon are not used because not supported by RTC */
alrmar |= (tm->tm_mday << STM32_RTC_ALRMXR_DATE_SHIFT) &
@@ -545,6 +552,7 @@ static void stm32_rtc_clear_events(struct stm32_rtc *rtc,
static const struct stm32_rtc_data stm32_rtc_data = {
.has_pclk = false,
.need_dbp = true,
+ .need_accuracy = false,
.regs = {
.tr = 0x00,
.dr = 0x04,
@@ -566,6 +574,7 @@ static const struct stm32_rtc_data stm32_rtc_data = {
static const struct stm32_rtc_data stm32h7_rtc_data = {
.has_pclk = true,
.need_dbp = true,
+ .need_accuracy = false,
.regs = {
.tr = 0x00,
.dr = 0x04,
@@ -596,6 +605,7 @@ static void stm32mp1_rtc_clear_events(struct stm32_rtc *rtc,
static const struct stm32_rtc_data stm32mp1_data = {
.has_pclk = true,
.need_dbp = false,
+ .need_accuracy = true,
.regs = {
.tr = 0x00,
.dr = 0x04,
@@ -628,7 +638,7 @@ static int stm32_rtc_init(struct platform_device *pdev,
const struct stm32_rtc_registers *regs = &rtc->data->regs;
unsigned int prer, pred_a, pred_s, pred_a_max, pred_s_max, cr;
unsigned int rate;
- int ret = 0;
+ int ret;
rate = clk_get_rate(rtc->rtc_ck);
@@ -636,18 +646,32 @@ static int stm32_rtc_init(struct platform_device *pdev,
pred_a_max = STM32_RTC_PRER_PRED_A >> STM32_RTC_PRER_PRED_A_SHIFT;
pred_s_max = STM32_RTC_PRER_PRED_S >> STM32_RTC_PRER_PRED_S_SHIFT;
- for (pred_a = pred_a_max; pred_a + 1 > 0; pred_a--) {
- pred_s = (rate / (pred_a + 1)) - 1;
+ if (rate > (pred_a_max + 1) * (pred_s_max + 1)) {
+ dev_err(&pdev->dev, "rtc_ck rate is too high: %dHz\n", rate);
+ return -EINVAL;
+ }
+
+ if (rtc->data->need_accuracy) {
+ for (pred_a = 0; pred_a <= pred_a_max; pred_a++) {
+ pred_s = (rate / (pred_a + 1)) - 1;
+
+ if (pred_s <= pred_s_max && ((pred_s + 1) * (pred_a + 1)) == rate)
+ break;
+ }
+ } else {
+ for (pred_a = pred_a_max; pred_a + 1 > 0; pred_a--) {
+ pred_s = (rate / (pred_a + 1)) - 1;
- if (((pred_s + 1) * (pred_a + 1)) == rate)
- break;
+ if (((pred_s + 1) * (pred_a + 1)) == rate)
+ break;
+ }
}
/*
* Can't find a 1Hz, so give priority to RTC power consumption
* by choosing the higher possible value for prediv_a
*/
- if ((pred_s > pred_s_max) || (pred_a > pred_a_max)) {
+ if (pred_s > pred_s_max || pred_a > pred_a_max) {
pred_a = pred_a_max;
pred_s = (rate / (pred_a + 1)) - 1;
@@ -656,6 +680,20 @@ static int stm32_rtc_init(struct platform_device *pdev,
"fast" : "slow");
}
+ cr = readl_relaxed(rtc->base + regs->cr);
+
+ prer = readl_relaxed(rtc->base + regs->prer);
+ prer &= STM32_RTC_PRER_PRED_S | STM32_RTC_PRER_PRED_A;
+
+ pred_s = (pred_s << STM32_RTC_PRER_PRED_S_SHIFT) &
+ STM32_RTC_PRER_PRED_S;
+ pred_a = (pred_a << STM32_RTC_PRER_PRED_A_SHIFT) &
+ STM32_RTC_PRER_PRED_A;
+
+ /* quit if there is nothing to initialize */
+ if ((cr & STM32_RTC_CR_FMT) == 0 && prer == (pred_s | pred_a))
+ return 0;
+
stm32_rtc_wpr_unlock(rtc);
ret = stm32_rtc_enter_init_mode(rtc);
@@ -665,13 +703,10 @@ static int stm32_rtc_init(struct platform_device *pdev,
goto end;
}
- prer = (pred_s << STM32_RTC_PRER_PRED_S_SHIFT) & STM32_RTC_PRER_PRED_S;
- writel_relaxed(prer, rtc->base + regs->prer);
- prer |= (pred_a << STM32_RTC_PRER_PRED_A_SHIFT) & STM32_RTC_PRER_PRED_A;
- writel_relaxed(prer, rtc->base + regs->prer);
+ writel_relaxed(pred_s, rtc->base + regs->prer);
+ writel_relaxed(pred_a | pred_s, rtc->base + regs->prer);
/* Force 24h time format */
- cr = readl_relaxed(rtc->base + regs->cr);
cr &= ~STM32_RTC_CR_FMT;
writel_relaxed(cr, rtc->base + regs->cr);
@@ -730,16 +765,13 @@ static int stm32_rtc_probe(struct platform_device *pdev)
rtc->rtc_ck = devm_clk_get(&pdev->dev, NULL);
} else {
rtc->pclk = devm_clk_get(&pdev->dev, "pclk");
- if (IS_ERR(rtc->pclk)) {
- dev_err(&pdev->dev, "no pclk clock");
- return PTR_ERR(rtc->pclk);
- }
+ if (IS_ERR(rtc->pclk))
+ return dev_err_probe(&pdev->dev, PTR_ERR(rtc->pclk), "no pclk clock");
+
rtc->rtc_ck = devm_clk_get(&pdev->dev, "rtc_ck");
}
- if (IS_ERR(rtc->rtc_ck)) {
- dev_err(&pdev->dev, "no rtc_ck clock");
- return PTR_ERR(rtc->rtc_ck);
- }
+ if (IS_ERR(rtc->rtc_ck))
+ return dev_err_probe(&pdev->dev, PTR_ERR(rtc->rtc_ck), "no rtc_ck clock");
if (rtc->data->has_pclk) {
ret = clk_prepare_enable(rtc->pclk);
@@ -859,7 +891,6 @@ static void stm32_rtc_remove(struct platform_device *pdev)
device_init_wakeup(&pdev->dev, false);
}
-#ifdef CONFIG_PM_SLEEP
static int stm32_rtc_suspend(struct device *dev)
{
struct stm32_rtc *rtc = dev_get_drvdata(dev);
@@ -890,10 +921,10 @@ static int stm32_rtc_resume(struct device *dev)
return ret;
}
-#endif
-static SIMPLE_DEV_PM_OPS(stm32_rtc_pm_ops,
- stm32_rtc_suspend, stm32_rtc_resume);
+static const struct dev_pm_ops stm32_rtc_pm_ops = {
+ NOIRQ_SYSTEM_SLEEP_PM_OPS(stm32_rtc_suspend, stm32_rtc_resume)
+};
static struct platform_driver stm32_rtc_driver = {
.probe = stm32_rtc_probe,
diff --git a/drivers/rtc/rtc-stmp3xxx.c b/drivers/rtc/rtc-stmp3xxx.c
index 6f11b745f34d95bfb0df5ca8e5033cfacbf3b6f0..7566d0a44af82aab2647a644a94464511ea42aea 100644
--- a/drivers/rtc/rtc-stmp3xxx.c
+++ b/drivers/rtc/rtc-stmp3xxx.c
@@ -18,7 +18,6 @@
#include <linux/delay.h>
#include <linux/rtc.h>
#include <linux/slab.h>
-#include <linux/of_device.h>
#include <linux/of.h>
#include <linux/stmp_device.h>
#include <linux/stmp3xxx_rtc_wdt.h>
diff --git a/drivers/rtc/rtc-sun6i.c b/drivers/rtc/rtc-sun6i.c
index 71548dd59a3a68ab529423db4d65b13b00515dcc..8e0c669061036c1beb6bd677f1dacb26cba8273c 100644
--- a/drivers/rtc/rtc-sun6i.c
+++ b/drivers/rtc/rtc-sun6i.c
@@ -24,7 +24,6 @@
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_address.h>
-#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/rtc.h>
#include <linux/slab.h>
@@ -847,8 +846,6 @@ static int sun6i_rtc_probe(struct platform_device *pdev)
if (ret)
return ret;
- dev_info(&pdev->dev, "RTC enabled\n");
-
return 0;
}
diff --git a/drivers/rtc/rtc-sunplus.c b/drivers/rtc/rtc-sunplus.c
index f33dc301f3019338bc344abbf04efa104bde7f19..20c7e97c2fc81523356dd0cb23d2fde02cd48be0 100644
--- a/drivers/rtc/rtc-sunplus.c
+++ b/drivers/rtc/rtc-sunplus.c
@@ -244,7 +244,7 @@ static int sp_rtc_probe(struct platform_device *plat_dev)
sp_rtc->irq = platform_get_irq(plat_dev, 0);
if (sp_rtc->irq < 0)
- return dev_err_probe(&plat_dev->dev, sp_rtc->irq, "platform_get_irq failed\n");
+ return sp_rtc->irq;
ret = devm_request_irq(&plat_dev->dev, sp_rtc->irq, sp_rtc_irq_handler,
IRQF_TRIGGER_RISING, "rtc irq", plat_dev);
diff --git a/drivers/rtc/rtc-sunxi.c b/drivers/rtc/rtc-sunxi.c
index 5d019e3a835ad6f490e0476b39404f2c5640bbd6..5cab9953c44f5d84a7b142b0a27bb4f9ac3c7d4a 100644
--- a/drivers/rtc/rtc-sunxi.c
+++ b/drivers/rtc/rtc-sunxi.c
@@ -14,8 +14,6 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/rtc.h>
#include <linux/types.h>
diff --git a/drivers/rtc/rtc-ti-k3.c b/drivers/rtc/rtc-ti-k3.c
index 0d90fe923355079be2d0104670aa658a75777d63..ec759d8f7023c62a3996ff6ff03a4bb53c2291c2 100644
--- a/drivers/rtc/rtc-ti-k3.c
+++ b/drivers/rtc/rtc-ti-k3.c
@@ -9,7 +9,7 @@
#include <linux/delay.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/sys_soc.h>
#include <linux/property.h>
diff --git a/drivers/rtc/rtc-tps6586x.c b/drivers/rtc/rtc-tps6586x.c
index 9f14e247574704222e25507198ae39249efd4164..20faf08c254cc04c48c70a85101330616ef79133 100644
--- a/drivers/rtc/rtc-tps6586x.c
+++ b/drivers/rtc/rtc-tps6586x.c
@@ -252,6 +252,7 @@ static int tps6586x_rtc_probe(struct platform_device *pdev)
rtc->rtc->ops = &tps6586x_rtc_ops;
rtc->rtc->range_max = (1ULL << 30) - 1; /* 30-bit seconds */
+ rtc->rtc->alarm_offset_max = ALM1_VALID_RANGE_IN_SEC;
rtc->rtc->start_secs = mktime64(2009, 1, 1, 0, 0, 0);
rtc->rtc->set_start_time = true;
diff --git a/drivers/rtc/rtc-tps65910.c b/drivers/rtc/rtc-tps65910.c
index 75e4c2d777b9c716773c980434a47b8d9b5125d0..411ff66c04682fe76a15c15b0a7f7bba153d1976 100644
--- a/drivers/rtc/rtc-tps65910.c
+++ b/drivers/rtc/rtc-tps65910.c
@@ -406,11 +406,8 @@ static int tps65910_rtc_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, tps_rtc);
irq = platform_get_irq(pdev, 0);
- if (irq <= 0) {
- dev_warn(&pdev->dev, "Wake up is not possible as irq = %d\n",
- irq);
- return -ENXIO;
- }
+ if (irq < 0)
+ return irq;
ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
tps65910_rtc_interrupt, IRQF_TRIGGER_LOW,
diff --git a/drivers/rtc/rtc-twl.c b/drivers/rtc/rtc-twl.c
index 81b36948c2fa3e65aadc6fd37d160b05dd5798b3..13f8ce08243c8950a940fe46d9df4c5ae0228a6c 100644
--- a/drivers/rtc/rtc-twl.c
+++ b/drivers/rtc/rtc-twl.c
@@ -487,11 +487,24 @@ static const struct rtc_class_ops twl_rtc_ops = {
.alarm_irq_enable = twl_rtc_alarm_irq_enable,
};
+static int twl_nvram_read(void *priv, unsigned int offset, void *val,
+ size_t bytes)
+{
+ return twl_i2c_read((long)priv, val, offset, bytes);
+}
+
+static int twl_nvram_write(void *priv, unsigned int offset, void *val,
+ size_t bytes)
+{
+ return twl_i2c_write((long)priv, val, offset, bytes);
+}
+
/*----------------------------------------------------------------------*/
static int twl_rtc_probe(struct platform_device *pdev)
{
struct twl_rtc *twl_rtc;
+ struct nvmem_config nvmem_cfg;
struct device_node *np = pdev->dev.of_node;
int ret = -EINVAL;
int irq = platform_get_irq(pdev, 0);
@@ -542,7 +555,6 @@ static int twl_rtc_probe(struct platform_device *pdev)
REG_INT_MSK_STS_A);
}
- dev_info(&pdev->dev, "Enabling TWL-RTC\n");
ret = twl_rtc_write_u8(twl_rtc, BIT_RTC_CTRL_REG_STOP_RTC_M,
REG_RTC_CTRL_REG);
if (ret < 0)
@@ -564,11 +576,8 @@ static int twl_rtc_probe(struct platform_device *pdev)
twl_rtc->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
&twl_rtc_ops, THIS_MODULE);
- if (IS_ERR(twl_rtc->rtc)) {
- dev_err(&pdev->dev, "can't register RTC device, err %ld\n",
- PTR_ERR(twl_rtc->rtc));
+ if (IS_ERR(twl_rtc->rtc))
return PTR_ERR(twl_rtc->rtc);
- }
ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
twl_rtc_interrupt,
@@ -579,6 +588,30 @@ static int twl_rtc_probe(struct platform_device *pdev)
return ret;
}
+ memset(&nvmem_cfg, 0, sizeof(nvmem_cfg));
+ nvmem_cfg.name = "twl-secured-";
+ nvmem_cfg.type = NVMEM_TYPE_BATTERY_BACKED;
+ nvmem_cfg.reg_read = twl_nvram_read,
+ nvmem_cfg.reg_write = twl_nvram_write,
+ nvmem_cfg.word_size = 1;
+ nvmem_cfg.stride = 1;
+ if (twl_class_is_4030()) {
+ /* 20 bytes SECURED_REG area */
+ nvmem_cfg.size = 20;
+ nvmem_cfg.priv = (void *)TWL_MODULE_SECURED_REG;
+ devm_rtc_nvmem_register(twl_rtc->rtc, &nvmem_cfg);
+ /* 8 bytes BACKUP area */
+ nvmem_cfg.name = "twl-backup-";
+ nvmem_cfg.size = 8;
+ nvmem_cfg.priv = (void *)TWL4030_MODULE_BACKUP;
+ devm_rtc_nvmem_register(twl_rtc->rtc, &nvmem_cfg);
+ } else {
+ /* 8 bytes SECURED_REG area */
+ nvmem_cfg.size = 8;
+ nvmem_cfg.priv = (void *)TWL_MODULE_SECURED_REG;
+ devm_rtc_nvmem_register(twl_rtc->rtc, &nvmem_cfg);
+ }
+
return 0;
}
diff --git a/drivers/rtc/rtc-wm8350.c b/drivers/rtc/rtc-wm8350.c
index 947f8071803f1b2ed458232a3b20e2a1454c3255..3c773cff2b3930775eba6b3604855a88f34d079d 100644
--- a/drivers/rtc/rtc-wm8350.c
+++ b/drivers/rtc/rtc-wm8350.c
@@ -386,8 +386,6 @@ static int wm8350_rtc_probe(struct platform_device *pdev)
/* enable the RTC if it's not already enabled */
power5 = wm8350_reg_read(wm8350, WM8350_POWER_MGMT_5);
if (!(power5 & WM8350_RTC_TICK_ENA)) {
- dev_info(wm8350->dev, "Starting RTC\n");
-
wm8350_reg_unlock(wm8350);
ret = wm8350_set_bits(wm8350, WM8350_POWER_MGMT_5,
@@ -426,11 +424,8 @@ static int wm8350_rtc_probe(struct platform_device *pdev)
wm_rtc->rtc = devm_rtc_device_register(&pdev->dev, "wm8350",
&wm8350_rtc_ops, THIS_MODULE);
- if (IS_ERR(wm_rtc->rtc)) {
- ret = PTR_ERR(wm_rtc->rtc);
- dev_err(&pdev->dev, "failed to register RTC: %d\n", ret);
- return ret;
- }
+ if (IS_ERR(wm_rtc->rtc))
+ return PTR_ERR(wm_rtc->rtc);
ret = wm8350_register_irq(wm8350, WM8350_IRQ_RTC_SEC,
wm8350_rtc_update_handler, 0,
diff --git a/include/linux/platform_data/rtc-ds2404.h b/include/linux/platform_data/rtc-ds2404.h
deleted file mode 100644
index 22c53825528f0995c9943954a8325e4fd18e22a0..0000000000000000000000000000000000000000
--- a/include/linux/platform_data/rtc-ds2404.h
+++ /dev/null
@@ -1,20 +0,0 @@
-/*
- * ds2404.h - platform data structure for the DS2404 RTC.
- *
- * 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.
- *
- * Copyright (C) 2012 Sven Schnelle <svens@stackframe.org>
- */
-
-#ifndef __LINUX_DS2404_H
-#define __LINUX_DS2404_H
-
-struct ds2404_platform_data {
-
- unsigned int gpio_rst;
- unsigned int gpio_clk;
- unsigned int gpio_dq;
-};
-#endif
diff --git a/include/linux/rtc.h b/include/linux/rtc.h
index 1fd9c6a21ebe85d8474867ba344c3451eb99bc99..4c0bcbeb1f00cf378fc2567a9431d808f0a5ab02 100644
--- a/include/linux/rtc.h
+++ b/include/linux/rtc.h
@@ -146,6 +146,7 @@ struct rtc_device {
time64_t range_min;
timeu64_t range_max;
+ timeu64_t alarm_offset_max;
time64_t start_secs;
time64_t offset_secs;
bool set_start_time;