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authorStephen Rothwell <sfr@canb.auug.org.au>2022-06-28 15:25:59 +1000
committerStephen Rothwell <sfr@canb.auug.org.au>2022-06-28 15:25:59 +1000
commit280569d553d7b75757eec7f1b86b4499ae1630a4 (patch)
tree3d31aea126a39da1c6cda263072c626e47d15d82
parentc7f4371ec3a45c85e23bbfafdc35716d8a4ff24e (diff)
parent592ff0c8d0648610511f4e4fb532f100168e6e0d (diff)
downloadlinux-next-280569d553d7b75757eec7f1b86b4499ae1630a4.tar.gz
linux-next-280569d553d7b75757eec7f1b86b4499ae1630a4.zip
Merge branch 'rtc-next' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux.git
-rw-r--r--Documentation/devicetree/bindings/rtc/qcom-pm8xxx-rtc.yaml2
-rw-r--r--Documentation/devicetree/bindings/rtc/rtc-mt6397.txt2
-rw-r--r--Documentation/devicetree/bindings/rtc/ti,k3-rtc.yaml62
-rw-r--r--MAINTAINERS1
-rw-r--r--drivers/rtc/Kconfig21
-rw-r--r--drivers/rtc/Makefile2
-rw-r--r--drivers/rtc/class.c6
-rw-r--r--drivers/rtc/dev.c8
-rw-r--r--drivers/rtc/rtc-ab-b5ze-s3.c5
-rw-r--r--drivers/rtc/rtc-ab-eoz9.c5
-rw-r--r--drivers/rtc/rtc-bq32k.c5
-rw-r--r--drivers/rtc/rtc-core.h5
-rw-r--r--drivers/rtc/rtc-ds1374.c5
-rw-r--r--drivers/rtc/rtc-ds1672.c5
-rw-r--r--drivers/rtc/rtc-ds3232.c5
-rw-r--r--drivers/rtc/rtc-em3027.c5
-rw-r--r--drivers/rtc/rtc-fm3130.c5
-rw-r--r--drivers/rtc/rtc-hym8563.c5
-rw-r--r--drivers/rtc/rtc-isl12022.c5
-rw-r--r--drivers/rtc/rtc-isl1208.c10
-rw-r--r--drivers/rtc/rtc-max6900.c5
-rw-r--r--drivers/rtc/rtc-mc146818-lib.c8
-rw-r--r--drivers/rtc/rtc-mpfs.c326
-rw-r--r--drivers/rtc/rtc-pcf8523.c5
-rw-r--r--drivers/rtc/rtc-pcf85363.c5
-rw-r--r--drivers/rtc/rtc-pcf8563.c5
-rw-r--r--drivers/rtc/rtc-pcf8583.c5
-rw-r--r--drivers/rtc/rtc-rv3029c2.c5
-rw-r--r--drivers/rtc/rtc-rv8803.c96
-rw-r--r--drivers/rtc/rtc-rx6110.c5
-rw-r--r--drivers/rtc/rtc-rx8581.c5
-rw-r--r--drivers/rtc/rtc-s35390a.c5
-rw-r--r--drivers/rtc/rtc-sd3078.c5
-rw-r--r--drivers/rtc/rtc-ti-k3.c680
-rw-r--r--drivers/rtc/rtc-x1205.c5
35 files changed, 1232 insertions, 102 deletions
diff --git a/Documentation/devicetree/bindings/rtc/qcom-pm8xxx-rtc.yaml b/Documentation/devicetree/bindings/rtc/qcom-pm8xxx-rtc.yaml
index 6fa7d9fc2dc7..23ab5bb4f395 100644
--- a/Documentation/devicetree/bindings/rtc/qcom-pm8xxx-rtc.yaml
+++ b/Documentation/devicetree/bindings/rtc/qcom-pm8xxx-rtc.yaml
@@ -7,7 +7,7 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
title: Qualcomm PM8xxx PMIC RTC device
maintainers:
- - Satya Priya <skakit@codeaurora.org>
+ - Satya Priya <quic_c_skakit@quicinc.com>
properties:
compatible:
diff --git a/Documentation/devicetree/bindings/rtc/rtc-mt6397.txt b/Documentation/devicetree/bindings/rtc/rtc-mt6397.txt
index 55a0c8874c03..7212076a8f1b 100644
--- a/Documentation/devicetree/bindings/rtc/rtc-mt6397.txt
+++ b/Documentation/devicetree/bindings/rtc/rtc-mt6397.txt
@@ -14,6 +14,8 @@ For MediaTek PMIC wrapper bus bindings, see:
Required properties:
- compatible: Should be one of follows
"mediatek,mt6323-rtc": for MT6323 PMIC
+ "mediatek,mt6358-rtc": for MT6358 PMIC
+ "mediatek,mt6366-rtc", "mediatek,mt6358-rtc": for MT6366 PMIC
"mediatek,mt6397-rtc": for MT6397 PMIC
Example:
diff --git a/Documentation/devicetree/bindings/rtc/ti,k3-rtc.yaml b/Documentation/devicetree/bindings/rtc/ti,k3-rtc.yaml
new file mode 100644
index 000000000000..d995ef04a6eb
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/ti,k3-rtc.yaml
@@ -0,0 +1,62 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rtc/ti,k3-rtc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments K3 Real Time Clock
+
+maintainers:
+ - Nishanth Menon <nm@ti.com>
+
+description: |
+ This RTC appears in the AM62x family of SoCs.
+
+allOf:
+ - $ref: "rtc.yaml#"
+
+properties:
+ compatible:
+ enum:
+ - ti,am62-rtc
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ items:
+ - description: VBUS Interface clock
+ - description: 32k Clock source (external or internal).
+
+ clock-names:
+ items:
+ - const: vbus
+ - const: osc32k
+
+ power-domains:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - clock-names
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ rtc@2b1f0000 {
+ compatible = "ti,am62-rtc";
+ reg = <0x2b1f0000 0x100>;
+ interrupts = <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>;
+ power-domains = <&bar 0>;
+ clocks = <&foo 0>, <&foo 1>;
+ clock-names = "vbus", "osc32k";
+ wakeup-source;
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 0df7717aaca8..ab956d6ac778 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -17313,6 +17313,7 @@ L: linux-riscv@lists.infradead.org
S: Supported
F: arch/riscv/boot/dts/microchip/
F: drivers/mailbox/mailbox-mpfs.c
+F: drivers/rtc/rtc-mpfs.c
F: drivers/soc/microchip/
F: drivers/spi/spi-microchip-core.c
F: drivers/usb/musb/mpfs.c
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index a00f901b5c1d..443b6d925335 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -1929,6 +1929,17 @@ config RTC_DRV_ASPEED
This driver can also be built as a module, if so, the module
will be called "rtc-aspeed".
+config RTC_DRV_TI_K3
+ tristate "TI K3 RTC"
+ depends on ARCH_K3 || COMPILE_TEST
+ select REGMAP_MMIO
+ help
+ If you say yes here you get support for the Texas Instruments's
+ Real Time Clock for K3 architecture.
+
+ This driver can also be built as a module, if so, the module
+ will be called "rtc-ti-k3".
+
comment "HID Sensor RTC drivers"
config RTC_DRV_HID_SENSOR_TIME
@@ -1973,4 +1984,14 @@ config RTC_DRV_MSC313
This driver can also be built as a module, if so, the module
will be called "rtc-msc313".
+config RTC_DRV_POLARFIRE_SOC
+ tristate "Microchip PolarFire SoC built-in RTC"
+ depends on SOC_MICROCHIP_POLARFIRE
+ help
+ If you say yes here you will get support for the
+ built-in RTC on Polarfire SoC.
+
+ This driver can also be built as a module, if so, the module
+ will be called "rtc-mpfs".
+
endif # RTC_CLASS
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index fb04467b652d..f83cd5ea9b11 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -130,6 +130,7 @@ obj-$(CONFIG_RTC_DRV_PIC32) += rtc-pic32.o
obj-$(CONFIG_RTC_DRV_PL030) += rtc-pl030.o
obj-$(CONFIG_RTC_DRV_PL031) += rtc-pl031.o
obj-$(CONFIG_RTC_DRV_PM8XXX) += rtc-pm8xxx.o
+obj-$(CONFIG_RTC_DRV_POLARFIRE_SOC) += rtc-mpfs.o
obj-$(CONFIG_RTC_DRV_PS3) += rtc-ps3.o
obj-$(CONFIG_RTC_DRV_PXA) += rtc-pxa.o
obj-$(CONFIG_RTC_DRV_R7301) += rtc-r7301.o
@@ -172,6 +173,7 @@ obj-$(CONFIG_RTC_DRV_SUNPLUS) += rtc-sunplus.o
obj-$(CONFIG_RTC_DRV_SUNXI) += rtc-sunxi.o
obj-$(CONFIG_RTC_DRV_TEGRA) += rtc-tegra.o
obj-$(CONFIG_RTC_DRV_TEST) += rtc-test.o
+obj-$(CONFIG_RTC_DRV_TI_K3) += rtc-ti-k3.o
obj-$(CONFIG_RTC_DRV_TPS6586X) += rtc-tps6586x.o
obj-$(CONFIG_RTC_DRV_TPS65910) += rtc-tps65910.o
obj-$(CONFIG_RTC_DRV_TWL4030) += rtc-twl.o
diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index 3c8eec2218df..e48223c00c67 100644
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -36,7 +36,7 @@ static void rtc_device_release(struct device *dev)
cancel_work_sync(&rtc->irqwork);
- ida_simple_remove(&rtc_ida, rtc->id);
+ ida_free(&rtc_ida, rtc->id);
mutex_destroy(&rtc->ops_lock);
kfree(rtc);
}
@@ -262,7 +262,7 @@ static int rtc_device_get_id(struct device *dev)
}
if (id < 0)
- id = ida_simple_get(&rtc_ida, 0, 0, GFP_KERNEL);
+ id = ida_alloc(&rtc_ida, GFP_KERNEL);
return id;
}
@@ -368,7 +368,7 @@ struct rtc_device *devm_rtc_allocate_device(struct device *dev)
rtc = rtc_allocate_device();
if (!rtc) {
- ida_simple_remove(&rtc_ida, id);
+ ida_free(&rtc_ida, id);
return ERR_PTR(-ENOMEM);
}
diff --git a/drivers/rtc/dev.c b/drivers/rtc/dev.c
index 69325aeede1a..4aad9bb99868 100644
--- a/drivers/rtc/dev.c
+++ b/drivers/rtc/dev.c
@@ -96,7 +96,7 @@ static int clear_uie(struct rtc_device *rtc)
}
if (rtc->uie_task_active) {
spin_unlock_irq(&rtc->irq_lock);
- flush_scheduled_work();
+ flush_work(&rtc->uie_task);
spin_lock_irq(&rtc->irq_lock);
}
rtc->uie_irq_active = 0;
@@ -566,9 +566,3 @@ void __init rtc_dev_init(void)
if (err < 0)
pr_err("failed to allocate char dev region\n");
}
-
-void __exit rtc_dev_exit(void)
-{
- if (rtc_devt)
- unregister_chrdev_region(rtc_devt, RTC_DEV_MAX);
-}
diff --git a/drivers/rtc/rtc-ab-b5ze-s3.c b/drivers/rtc/rtc-ab-b5ze-s3.c
index 6e3e320dc727..f2b0971d2c65 100644
--- a/drivers/rtc/rtc-ab-b5ze-s3.c
+++ b/drivers/rtc/rtc-ab-b5ze-s3.c
@@ -817,8 +817,7 @@ static const struct regmap_config abb5zes3_rtc_regmap_config = {
.val_bits = 8,
};
-static int abb5zes3_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int abb5zes3_probe(struct i2c_client *client)
{
struct abb5zes3_rtc_data *data = NULL;
struct device *dev = &client->dev;
@@ -945,7 +944,7 @@ static struct i2c_driver abb5zes3_driver = {
.pm = &abb5zes3_rtc_pm_ops,
.of_match_table = of_match_ptr(abb5zes3_dt_match),
},
- .probe = abb5zes3_probe,
+ .probe_new = abb5zes3_probe,
.id_table = abb5zes3_id,
};
module_i2c_driver(abb5zes3_driver);
diff --git a/drivers/rtc/rtc-ab-eoz9.c b/drivers/rtc/rtc-ab-eoz9.c
index e188ab517f1e..2f8deb8c4cd3 100644
--- a/drivers/rtc/rtc-ab-eoz9.c
+++ b/drivers/rtc/rtc-ab-eoz9.c
@@ -495,8 +495,7 @@ static void abeoz9_hwmon_register(struct device *dev,
#endif
-static int abeoz9_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int abeoz9_probe(struct i2c_client *client)
{
struct abeoz9_rtc_data *data = NULL;
struct device *dev = &client->dev;
@@ -580,7 +579,7 @@ static struct i2c_driver abeoz9_driver = {
.name = "rtc-ab-eoz9",
.of_match_table = of_match_ptr(abeoz9_dt_match),
},
- .probe = abeoz9_probe,
+ .probe_new = abeoz9_probe,
.id_table = abeoz9_id,
};
diff --git a/drivers/rtc/rtc-bq32k.c b/drivers/rtc/rtc-bq32k.c
index 2235c968842d..e0bbb11d912e 100644
--- a/drivers/rtc/rtc-bq32k.c
+++ b/drivers/rtc/rtc-bq32k.c
@@ -249,8 +249,7 @@ static void bq32k_sysfs_unregister(struct device *dev)
device_remove_file(dev, &dev_attr_trickle_charge_bypass);
}
-static int bq32k_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int bq32k_probe(struct i2c_client *client)
{
struct device *dev = &client->dev;
struct rtc_device *rtc;
@@ -322,7 +321,7 @@ static struct i2c_driver bq32k_driver = {
.name = "bq32k",
.of_match_table = of_match_ptr(bq32k_of_match),
},
- .probe = bq32k_probe,
+ .probe_new = bq32k_probe,
.remove = bq32k_remove,
.id_table = bq32k_id,
};
diff --git a/drivers/rtc/rtc-core.h b/drivers/rtc/rtc-core.h
index 0abf98983e13..4b10a1b8f370 100644
--- a/drivers/rtc/rtc-core.h
+++ b/drivers/rtc/rtc-core.h
@@ -2,7 +2,6 @@
#ifdef CONFIG_RTC_INTF_DEV
extern void __init rtc_dev_init(void);
-extern void __exit rtc_dev_exit(void);
extern void rtc_dev_prepare(struct rtc_device *rtc);
#else
@@ -11,10 +10,6 @@ static inline void rtc_dev_init(void)
{
}
-static inline void rtc_dev_exit(void)
-{
-}
-
static inline void rtc_dev_prepare(struct rtc_device *rtc)
{
}
diff --git a/drivers/rtc/rtc-ds1374.c b/drivers/rtc/rtc-ds1374.c
index 8db5a631bca8..b19de5100b1a 100644
--- a/drivers/rtc/rtc-ds1374.c
+++ b/drivers/rtc/rtc-ds1374.c
@@ -467,8 +467,7 @@ static const struct watchdog_ops ds1374_wdt_ops = {
*
*****************************************************************************
*/
-static int ds1374_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int ds1374_probe(struct i2c_client *client)
{
struct ds1374 *ds1374;
int ret;
@@ -575,7 +574,7 @@ static struct i2c_driver ds1374_driver = {
.of_match_table = of_match_ptr(ds1374_of_match),
.pm = &ds1374_pm,
},
- .probe = ds1374_probe,
+ .probe_new = ds1374_probe,
.remove = ds1374_remove,
.id_table = ds1374_id,
};
diff --git a/drivers/rtc/rtc-ds1672.c b/drivers/rtc/rtc-ds1672.c
index 4cd8efbef6cf..a3bb2cd9c881 100644
--- a/drivers/rtc/rtc-ds1672.c
+++ b/drivers/rtc/rtc-ds1672.c
@@ -106,8 +106,7 @@ static const struct rtc_class_ops ds1672_rtc_ops = {
.set_time = ds1672_set_time,
};
-static int ds1672_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int ds1672_probe(struct i2c_client *client)
{
int err = 0;
struct rtc_device *rtc;
@@ -150,7 +149,7 @@ static struct i2c_driver ds1672_driver = {
.name = "rtc-ds1672",
.of_match_table = of_match_ptr(ds1672_of_match),
},
- .probe = &ds1672_probe,
+ .probe_new = ds1672_probe,
.id_table = ds1672_id,
};
diff --git a/drivers/rtc/rtc-ds3232.c b/drivers/rtc/rtc-ds3232.c
index 168bc27f1f5a..dd31a60c1fc6 100644
--- a/drivers/rtc/rtc-ds3232.c
+++ b/drivers/rtc/rtc-ds3232.c
@@ -566,8 +566,7 @@ static const struct dev_pm_ops ds3232_pm_ops = {
#if IS_ENABLED(CONFIG_I2C)
-static int ds3232_i2c_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int ds3232_i2c_probe(struct i2c_client *client)
{
struct regmap *regmap;
static const struct regmap_config config = {
@@ -604,7 +603,7 @@ static struct i2c_driver ds3232_driver = {
.of_match_table = of_match_ptr(ds3232_of_match),
.pm = &ds3232_pm_ops,
},
- .probe = ds3232_i2c_probe,
+ .probe_new = ds3232_i2c_probe,
.id_table = ds3232_id,
};
diff --git a/drivers/rtc/rtc-em3027.c b/drivers/rtc/rtc-em3027.c
index 9f176bce48ba..53f9f9391a5f 100644
--- a/drivers/rtc/rtc-em3027.c
+++ b/drivers/rtc/rtc-em3027.c
@@ -111,8 +111,7 @@ static const struct rtc_class_ops em3027_rtc_ops = {
.set_time = em3027_set_time,
};
-static int em3027_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int em3027_probe(struct i2c_client *client)
{
struct rtc_device *rtc;
@@ -148,7 +147,7 @@ static struct i2c_driver em3027_driver = {
.name = "rtc-em3027",
.of_match_table = of_match_ptr(em3027_of_match),
},
- .probe = &em3027_probe,
+ .probe_new = em3027_probe,
.id_table = em3027_id,
};
diff --git a/drivers/rtc/rtc-fm3130.c b/drivers/rtc/rtc-fm3130.c
index 677ec2da13d8..f59bb81f23c0 100644
--- a/drivers/rtc/rtc-fm3130.c
+++ b/drivers/rtc/rtc-fm3130.c
@@ -340,8 +340,7 @@ static const struct rtc_class_ops fm3130_rtc_ops = {
static struct i2c_driver fm3130_driver;
-static int fm3130_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int fm3130_probe(struct i2c_client *client)
{
struct fm3130 *fm3130;
int err = -ENODEV;
@@ -518,7 +517,7 @@ static struct i2c_driver fm3130_driver = {
.driver = {
.name = "rtc-fm3130",
},
- .probe = fm3130_probe,
+ .probe_new = fm3130_probe,
.id_table = fm3130_id,
};
diff --git a/drivers/rtc/rtc-hym8563.c b/drivers/rtc/rtc-hym8563.c
index 90e602e99d03..cc710d682121 100644
--- a/drivers/rtc/rtc-hym8563.c
+++ b/drivers/rtc/rtc-hym8563.c
@@ -495,8 +495,7 @@ static int hym8563_resume(struct device *dev)
static SIMPLE_DEV_PM_OPS(hym8563_pm_ops, hym8563_suspend, hym8563_resume);
-static int hym8563_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int hym8563_probe(struct i2c_client *client)
{
struct hym8563 *hym8563;
int ret;
@@ -572,7 +571,7 @@ static struct i2c_driver hym8563_driver = {
.pm = &hym8563_pm_ops,
.of_match_table = hym8563_dt_idtable,
},
- .probe = hym8563_probe,
+ .probe_new = hym8563_probe,
.id_table = hym8563_id,
};
diff --git a/drivers/rtc/rtc-isl12022.c b/drivers/rtc/rtc-isl12022.c
index 961bd5d1d109..79461ded1a48 100644
--- a/drivers/rtc/rtc-isl12022.c
+++ b/drivers/rtc/rtc-isl12022.c
@@ -232,8 +232,7 @@ static const struct rtc_class_ops isl12022_rtc_ops = {
.set_time = isl12022_rtc_set_time,
};
-static int isl12022_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int isl12022_probe(struct i2c_client *client)
{
struct isl12022 *isl12022;
@@ -275,7 +274,7 @@ static struct i2c_driver isl12022_driver = {
.of_match_table = of_match_ptr(isl12022_dt_match),
#endif
},
- .probe = isl12022_probe,
+ .probe_new = isl12022_probe,
.id_table = isl12022_id,
};
diff --git a/drivers/rtc/rtc-isl1208.c b/drivers/rtc/rtc-isl1208.c
index 182dfa605515..f448a525333e 100644
--- a/drivers/rtc/rtc-isl1208.c
+++ b/drivers/rtc/rtc-isl1208.c
@@ -880,10 +880,14 @@ isl1208_probe(struct i2c_client *client, const struct i2c_device_id *id)
if (rc)
return rc;
- if (client->irq > 0)
+ if (client->irq > 0) {
rc = isl1208_setup_irq(client, client->irq);
- if (rc)
- return rc;
+ if (rc)
+ return rc;
+
+ } else {
+ clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, isl1208->rtc->features);
+ }
if (evdet_irq > 0 && evdet_irq != client->irq)
rc = isl1208_setup_irq(client, evdet_irq);
diff --git a/drivers/rtc/rtc-max6900.c b/drivers/rtc/rtc-max6900.c
index 4beadfa41644..0a33851cc51f 100644
--- a/drivers/rtc/rtc-max6900.c
+++ b/drivers/rtc/rtc-max6900.c
@@ -197,8 +197,7 @@ static const struct rtc_class_ops max6900_rtc_ops = {
.set_time = max6900_rtc_set_time,
};
-static int
-max6900_probe(struct i2c_client *client, const struct i2c_device_id *id)
+static int max6900_probe(struct i2c_client *client)
{
struct rtc_device *rtc;
@@ -225,7 +224,7 @@ static struct i2c_driver max6900_driver = {
.driver = {
.name = "rtc-max6900",
},
- .probe = max6900_probe,
+ .probe_new = max6900_probe,
.id_table = max6900_id,
};
diff --git a/drivers/rtc/rtc-mc146818-lib.c b/drivers/rtc/rtc-mc146818-lib.c
index 522449b25921..f1c09f1db044 100644
--- a/drivers/rtc/rtc-mc146818-lib.c
+++ b/drivers/rtc/rtc-mc146818-lib.c
@@ -21,13 +21,13 @@ bool mc146818_avoid_UIP(void (*callback)(unsigned char seconds, void *param),
unsigned long flags;
unsigned char seconds;
- for (i = 0; i < 10; i++) {
+ for (i = 0; i < 100; i++) {
spin_lock_irqsave(&rtc_lock, flags);
/*
* Check whether there is an update in progress during which the
* readout is unspecified. The maximum update time is ~2ms. Poll
- * every msec for completion.
+ * every 100 usec for completion.
*
* Store the second value before checking UIP so a long lasting
* NMI which happens to hit after the UIP check cannot make
@@ -37,7 +37,7 @@ bool mc146818_avoid_UIP(void (*callback)(unsigned char seconds, void *param),
if (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP) {
spin_unlock_irqrestore(&rtc_lock, flags);
- mdelay(1);
+ udelay(100);
continue;
}
@@ -56,7 +56,7 @@ bool mc146818_avoid_UIP(void (*callback)(unsigned char seconds, void *param),
*/
if (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP) {
spin_unlock_irqrestore(&rtc_lock, flags);
- mdelay(1);
+ udelay(100);
continue;
}
diff --git a/drivers/rtc/rtc-mpfs.c b/drivers/rtc/rtc-mpfs.c
new file mode 100644
index 000000000000..db9c638e50f7
--- /dev/null
+++ b/drivers/rtc/rtc-mpfs.c
@@ -0,0 +1,326 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Microchip MPFS RTC driver
+ *
+ * Copyright (c) 2021-2022 Microchip Corporation. All rights reserved.
+ *
+ * Author: Daire McNamara <daire.mcnamara@microchip.com>
+ * & Conor Dooley <conor.dooley@microchip.com>
+ */
+#include "linux/bits.h"
+#include "linux/iopoll.h"
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/pm_wakeirq.h>
+#include <linux/slab.h>
+#include <linux/rtc.h>
+
+#define CONTROL_REG 0x00
+#define MODE_REG 0x04
+#define PRESCALER_REG 0x08
+#define ALARM_LOWER_REG 0x0c
+#define ALARM_UPPER_REG 0x10
+#define COMPARE_LOWER_REG 0x14
+#define COMPARE_UPPER_REG 0x18
+#define DATETIME_LOWER_REG 0x20
+#define DATETIME_UPPER_REG 0x24
+
+#define CONTROL_RUNNING_BIT BIT(0)
+#define CONTROL_START_BIT BIT(0)
+#define CONTROL_STOP_BIT BIT(1)
+#define CONTROL_ALARM_ON_BIT BIT(2)
+#define CONTROL_ALARM_OFF_BIT BIT(3)
+#define CONTROL_RESET_BIT BIT(4)
+#define CONTROL_UPLOAD_BIT BIT(5)
+#define CONTROL_DOWNLOAD_BIT BIT(6)
+#define CONTROL_MATCH_BIT BIT(7)
+#define CONTROL_WAKEUP_CLR_BIT BIT(8)
+#define CONTROL_WAKEUP_SET_BIT BIT(9)
+#define CONTROL_UPDATED_BIT BIT(10)
+
+#define MODE_CLOCK_CALENDAR BIT(0)
+#define MODE_WAKE_EN BIT(1)
+#define MODE_WAKE_RESET BIT(2)
+#define MODE_WAKE_CONTINUE BIT(3)
+
+#define MAX_PRESCALER_COUNT GENMASK(25, 0)
+#define DATETIME_UPPER_MASK GENMASK(29, 0)
+#define ALARM_UPPER_MASK GENMASK(10, 0)
+
+#define UPLOAD_TIMEOUT_US 50
+
+struct mpfs_rtc_dev {
+ struct rtc_device *rtc;
+ void __iomem *base;
+};
+
+static void mpfs_rtc_start(struct mpfs_rtc_dev *rtcdev)
+{
+ u32 ctrl;
+
+ ctrl = readl(rtcdev->base + CONTROL_REG);
+ ctrl &= ~CONTROL_STOP_BIT;
+ ctrl |= CONTROL_START_BIT;
+ writel(ctrl, rtcdev->base + CONTROL_REG);
+}
+
+static void mpfs_rtc_clear_irq(struct mpfs_rtc_dev *rtcdev)
+{
+ u32 val = readl(rtcdev->base + CONTROL_REG);
+
+ val &= ~(CONTROL_ALARM_ON_BIT | CONTROL_STOP_BIT);
+ val |= CONTROL_ALARM_OFF_BIT;
+ writel(val, rtcdev->base + CONTROL_REG);
+ /*
+ * Ensure that the posted write to the CONTROL_REG register completed before
+ * returning from this function. Not doing this may result in the interrupt
+ * only being cleared some time after this function returns.
+ */
+ (void)readl(rtcdev->base + CONTROL_REG);
+}
+
+static int mpfs_rtc_readtime(struct device *dev, struct rtc_time *tm)
+{
+ struct mpfs_rtc_dev *rtcdev = dev_get_drvdata(dev);
+ u64 time;
+
+ time = readl(rtcdev->base + DATETIME_LOWER_REG);
+ time |= ((u64)readl(rtcdev->base + DATETIME_UPPER_REG) & DATETIME_UPPER_MASK) << 32;
+ rtc_time64_to_tm(time, tm);
+
+ return 0;
+}
+
+static int mpfs_rtc_settime(struct device *dev, struct rtc_time *tm)
+{
+ struct mpfs_rtc_dev *rtcdev = dev_get_drvdata(dev);
+ u32 ctrl, prog;
+ u64 time;
+ int ret;
+
+ time = rtc_tm_to_time64(tm);
+
+ writel((u32)time, rtcdev->base + DATETIME_LOWER_REG);
+ writel((u32)(time >> 32) & DATETIME_UPPER_MASK, rtcdev->base + DATETIME_UPPER_REG);
+
+ ctrl = readl(rtcdev->base + CONTROL_REG);
+ ctrl &= ~CONTROL_STOP_BIT;
+ ctrl |= CONTROL_UPLOAD_BIT;
+ writel(ctrl, rtcdev->base + CONTROL_REG);
+
+ ret = read_poll_timeout(readl, prog, prog & CONTROL_UPLOAD_BIT, 0, UPLOAD_TIMEOUT_US,
+ false, rtcdev->base + CONTROL_REG);
+ if (ret) {
+ dev_err(dev, "timed out uploading time to rtc");
+ return ret;
+ }
+ mpfs_rtc_start(rtcdev);
+
+ return 0;
+}
+
+static int mpfs_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+ struct mpfs_rtc_dev *rtcdev = dev_get_drvdata(dev);
+ u32 mode = readl(rtcdev->base + MODE_REG);
+ u64 time;
+
+ alrm->enabled = mode & MODE_WAKE_EN;
+
+ time = (u64)readl(rtcdev->base + ALARM_LOWER_REG) << 32;
+ time |= (readl(rtcdev->base + ALARM_UPPER_REG) & ALARM_UPPER_MASK);
+ rtc_time64_to_tm(time, &alrm->time);
+
+ return 0;
+}
+
+static int mpfs_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+ struct mpfs_rtc_dev *rtcdev = dev_get_drvdata(dev);
+ u32 mode, ctrl;
+ u64 time;
+
+ /* Disable the alarm before updating */
+ ctrl = readl(rtcdev->base + CONTROL_REG);
+ ctrl |= CONTROL_ALARM_OFF_BIT;
+ writel(ctrl, rtcdev->base + CONTROL_REG);
+
+ time = rtc_tm_to_time64(&alrm->time);
+
+ writel((u32)time, rtcdev->base + ALARM_LOWER_REG);
+ writel((u32)(time >> 32) & ALARM_UPPER_MASK, rtcdev->base + ALARM_UPPER_REG);
+
+ /* Bypass compare register in alarm mode */
+ writel(GENMASK(31, 0), rtcdev->base + COMPARE_LOWER_REG);
+ writel(GENMASK(29, 0), rtcdev->base + COMPARE_UPPER_REG);
+
+ /* Configure the RTC to enable the alarm. */
+ ctrl = readl(rtcdev->base + CONTROL_REG);
+ mode = readl(rtcdev->base + MODE_REG);
+ if (alrm->enabled) {
+ mode = MODE_WAKE_EN | MODE_WAKE_CONTINUE;
+ /* Enable the alarm */
+ ctrl &= ~CONTROL_ALARM_OFF_BIT;
+ ctrl |= CONTROL_ALARM_ON_BIT;
+ }
+ ctrl &= ~CONTROL_STOP_BIT;
+ ctrl |= CONTROL_START_BIT;
+ writel(ctrl, rtcdev->base + CONTROL_REG);
+ writel(mode, rtcdev->base + MODE_REG);
+
+ return 0;
+}
+
+static int mpfs_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
+{
+ struct mpfs_rtc_dev *rtcdev = dev_get_drvdata(dev);
+ u32 ctrl;
+
+ ctrl = readl(rtcdev->base + CONTROL_REG);
+ ctrl &= ~(CONTROL_ALARM_ON_BIT | CONTROL_ALARM_OFF_BIT | CONTROL_STOP_BIT);
+
+ if (enabled)
+ ctrl |= CONTROL_ALARM_ON_BIT;
+ else
+ ctrl |= CONTROL_ALARM_OFF_BIT;
+
+ writel(ctrl, rtcdev->base + CONTROL_REG);
+
+ return 0;
+}
+
+static inline struct clk *mpfs_rtc_init_clk(struct device *dev)
+{
+ struct clk *clk;
+ int ret;
+
+ clk = devm_clk_get(dev, "rtc");
+ if (IS_ERR(clk))
+ return clk;
+
+ ret = clk_prepare_enable(clk);
+ if (ret)
+ return ERR_PTR(ret);
+
+ devm_add_action_or_reset(dev, (void (*) (void *))clk_disable_unprepare, clk);
+ return clk;
+}
+
+static irqreturn_t mpfs_rtc_wakeup_irq_handler(int irq, void *dev)
+{
+ struct mpfs_rtc_dev *rtcdev = dev;
+ unsigned long pending;
+
+ pending = readl(rtcdev->base + CONTROL_REG);
+ pending &= CONTROL_ALARM_ON_BIT;
+ mpfs_rtc_clear_irq(rtcdev);
+
+ rtc_update_irq(rtcdev->rtc, 1, RTC_IRQF | RTC_AF);
+
+ return IRQ_HANDLED;
+}
+
+static const struct rtc_class_ops mpfs_rtc_ops = {
+ .read_time = mpfs_rtc_readtime,
+ .set_time = mpfs_rtc_settime,
+ .read_alarm = mpfs_rtc_readalarm,
+ .set_alarm = mpfs_rtc_setalarm,
+ .alarm_irq_enable = mpfs_rtc_alarm_irq_enable,
+};
+
+static int mpfs_rtc_probe(struct platform_device *pdev)
+{
+ struct mpfs_rtc_dev *rtcdev;
+ struct clk *clk;
+ u32 prescaler;
+ int wakeup_irq, ret;
+
+ rtcdev = devm_kzalloc(&pdev->dev, sizeof(struct mpfs_rtc_dev), GFP_KERNEL);
+ if (!rtcdev)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, rtcdev);
+
+ rtcdev->rtc = devm_rtc_allocate_device(&pdev->dev);
+ if (IS_ERR(rtcdev->rtc))
+ return PTR_ERR(rtcdev->rtc);
+
+ rtcdev->rtc->ops = &mpfs_rtc_ops;
+
+ /* range is capped by alarm max, lower reg is 31:0 & upper is 10:0 */
+ rtcdev->rtc->range_max = GENMASK_ULL(42, 0);
+
+ clk = mpfs_rtc_init_clk(&pdev->dev);
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
+
+ rtcdev->base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(rtcdev->base)) {
+ dev_dbg(&pdev->dev, "invalid ioremap resources\n");
+ return PTR_ERR(rtcdev->base);
+ }
+
+ wakeup_irq = platform_get_irq(pdev, 0);
+ if (wakeup_irq <= 0) {
+ dev_dbg(&pdev->dev, "could not get wakeup irq\n");
+ return wakeup_irq;
+ }
+ ret = devm_request_irq(&pdev->dev, wakeup_irq, mpfs_rtc_wakeup_irq_handler, 0,
+ dev_name(&pdev->dev), rtcdev);
+ if (ret) {
+ dev_dbg(&pdev->dev, "could not request wakeup irq\n");
+ return ret;
+ }
+
+ /* prescaler hardware adds 1 to reg value */
+ prescaler = clk_get_rate(devm_clk_get(&pdev->dev, "rtcref")) - 1;
+
+ if (prescaler > MAX_PRESCALER_COUNT) {
+ dev_dbg(&pdev->dev, "invalid prescaler %d\n", prescaler);
+ return -EINVAL;
+ }
+
+ writel(prescaler, rtcdev->base + PRESCALER_REG);
+ dev_info(&pdev->dev, "prescaler set to: 0x%X \r\n", prescaler);
+
+ device_init_wakeup(&pdev->dev, true);
+ ret = dev_pm_set_wake_irq(&pdev->dev, wakeup_irq);
+ if (ret)
+ dev_err(&pdev->dev, "failed to enable irq wake\n");
+
+ return devm_rtc_register_device(rtcdev->rtc);
+}
+
+static int mpfs_rtc_remove(struct platform_device *pdev)
+{
+ dev_pm_clear_wake_irq(&pdev->dev);
+
+ return 0;
+}
+
+static const struct of_device_id mpfs_rtc_of_match[] = {
+ { .compatible = "microchip,mpfs-rtc" },
+ { }
+};
+
+MODULE_DEVICE_TABLE(of, mpfs_rtc_of_match);
+
+static struct platform_driver mpfs_rtc_driver = {
+ .probe = mpfs_rtc_probe,
+ .remove = mpfs_rtc_remove,
+ .driver = {
+ .name = "mpfs_rtc",
+ .of_match_table = mpfs_rtc_of_match,
+ },
+};
+
+module_platform_driver(mpfs_rtc_driver);
+
+MODULE_DESCRIPTION("Real time clock for Microchip Polarfire SoC");
+MODULE_AUTHOR("Daire McNamara <daire.mcnamara@microchip.com>");
+MODULE_AUTHOR("Conor Dooley <conor.dooley@microchip.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/rtc/rtc-pcf8523.c b/drivers/rtc/rtc-pcf8523.c
index b1b1943de844..6174b3fd4b98 100644
--- a/drivers/rtc/rtc-pcf8523.c
+++ b/drivers/rtc/rtc-pcf8523.c
@@ -390,8 +390,7 @@ static const struct regmap_config regmap_config = {
.max_register = 0x13,
};
-static int pcf8523_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int pcf8523_probe(struct i2c_client *client)
{
struct pcf8523 *pcf8523;
struct rtc_device *rtc;
@@ -485,7 +484,7 @@ static struct i2c_driver pcf8523_driver = {
.name = "rtc-pcf8523",
.of_match_table = pcf8523_of_match,
},
- .probe = pcf8523_probe,
+ .probe_new = pcf8523_probe,
.id_table = pcf8523_id,
};
module_i2c_driver(pcf8523_driver);
diff --git a/drivers/rtc/rtc-pcf85363.c b/drivers/rtc/rtc-pcf85363.c
index bb3e9ba75f6c..c05b722f0060 100644
--- a/drivers/rtc/rtc-pcf85363.c
+++ b/drivers/rtc/rtc-pcf85363.c
@@ -350,8 +350,7 @@ static const struct pcf85x63_config pcf_85363_config = {
.num_nvram = 2
};
-static int pcf85363_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int pcf85363_probe(struct i2c_client *client)
{
struct pcf85363 *pcf85363;
const struct pcf85x63_config *config = &pcf_85363_config;
@@ -436,7 +435,7 @@ static struct i2c_driver pcf85363_driver = {
.name = "pcf85363",
.of_match_table = of_match_ptr(dev_ids),
},
- .probe = pcf85363_probe,
+ .probe_new = pcf85363_probe,
};
module_i2c_driver(pcf85363_driver);
diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c
index 9d06813e2e6d..11fa9788558b 100644
--- a/drivers/rtc/rtc-pcf8563.c
+++ b/drivers/rtc/rtc-pcf8563.c
@@ -509,8 +509,7 @@ static const struct rtc_class_ops pcf8563_rtc_ops = {
.alarm_irq_enable = pcf8563_irq_enable,
};
-static int pcf8563_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int pcf8563_probe(struct i2c_client *client)
{
struct pcf8563 *pcf8563;
int err;
@@ -606,7 +605,7 @@ static struct i2c_driver pcf8563_driver = {
.name = "rtc-pcf8563",
.of_match_table = of_match_ptr(pcf8563_of_match),
},
- .probe = pcf8563_probe,
+ .probe_new = pcf8563_probe,
.id_table = pcf8563_id,
};
diff --git a/drivers/rtc/rtc-pcf8583.c b/drivers/rtc/rtc-pcf8583.c
index c80ca20e5d8d..87074d178274 100644
--- a/drivers/rtc/rtc-pcf8583.c
+++ b/drivers/rtc/rtc-pcf8583.c
@@ -275,8 +275,7 @@ static const struct rtc_class_ops pcf8583_rtc_ops = {
.set_time = pcf8583_rtc_set_time,
};
-static int pcf8583_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int pcf8583_probe(struct i2c_client *client)
{
struct pcf8583 *pcf8583;
@@ -307,7 +306,7 @@ static struct i2c_driver pcf8583_driver = {
.driver = {
.name = "pcf8583",
},
- .probe = pcf8583_probe,
+ .probe_new = pcf8583_probe,
.id_table = pcf8583_id,
};
diff --git a/drivers/rtc/rtc-rv3029c2.c b/drivers/rtc/rtc-rv3029c2.c
index 8cb84c9595fc..eb483a30bd92 100644
--- a/drivers/rtc/rtc-rv3029c2.c
+++ b/drivers/rtc/rtc-rv3029c2.c
@@ -784,8 +784,7 @@ static const struct regmap_config config = {
#if IS_ENABLED(CONFIG_I2C)
-static int rv3029_i2c_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int rv3029_i2c_probe(struct i2c_client *client)
{
struct regmap *regmap;
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_I2C_BLOCK |
@@ -819,7 +818,7 @@ static struct i2c_driver rv3029_driver = {
.name = "rv3029",
.of_match_table = of_match_ptr(rv3029_of_match),
},
- .probe = rv3029_i2c_probe,
+ .probe_new = rv3029_i2c_probe,
.id_table = rv3029_id,
};
diff --git a/drivers/rtc/rtc-rv8803.c b/drivers/rtc/rtc-rv8803.c
index f69e0b1137cd..fe1247e771b9 100644
--- a/drivers/rtc/rtc-rv8803.c
+++ b/drivers/rtc/rtc-rv8803.c
@@ -9,6 +9,7 @@
#include <linux/bcd.h>
#include <linux/bitops.h>
+#include <linux/bitfield.h>
#include <linux/log2.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
@@ -33,6 +34,7 @@
#define RV8803_EXT 0x0D
#define RV8803_FLAG 0x0E
#define RV8803_CTRL 0x0F
+#define RV8803_OSC_OFFSET 0x2C
#define RV8803_EXT_WADA BIT(6)
@@ -49,12 +51,15 @@
#define RV8803_CTRL_TIE BIT(4)
#define RV8803_CTRL_UIE BIT(5)
+#define RX8803_CTRL_CSEL GENMASK(7, 6)
+
#define RX8900_BACKUP_CTRL 0x18
#define RX8900_FLAG_SWOFF BIT(2)
#define RX8900_FLAG_VDETOFF BIT(3)
enum rv8803_type {
rv_8803,
+ rx_8803,
rx_8804,
rx_8900
};
@@ -64,6 +69,7 @@ struct rv8803_data {
struct rtc_device *rtc;
struct mutex flags_lock;
u8 ctrl;
+ u8 backup;
enum rv8803_type type;
};
@@ -136,6 +142,44 @@ static int rv8803_write_regs(const struct i2c_client *client,
return ret;
}
+static int rv8803_regs_init(struct rv8803_data *rv8803)
+{
+ int ret;
+
+ ret = rv8803_write_reg(rv8803->client, RV8803_OSC_OFFSET, 0x00);
+ if (ret)
+ return ret;
+
+ ret = rv8803_write_reg(rv8803->client, RV8803_CTRL,
+ FIELD_PREP(RX8803_CTRL_CSEL, 1)); /* 2s */
+ if (ret)
+ return ret;
+
+ ret = rv8803_write_regs(rv8803->client, RV8803_ALARM_MIN, 3,
+ (u8[]){ 0, 0, 0 });
+ if (ret)
+ return ret;
+
+ return rv8803_write_reg(rv8803->client, RV8803_RAM, 0x00);
+}
+
+static int rv8803_regs_configure(struct rv8803_data *rv8803);
+
+static int rv8803_regs_reset(struct rv8803_data *rv8803)
+{
+ /*
+ * The RV-8803 resets all registers to POR defaults after voltage-loss,
+ * the Epson RTCs don't, so we manually reset the remainder here.
+ */
+ if (rv8803->type == rx_8803 || rv8803->type == rx_8900) {
+ int ret = rv8803_regs_init(rv8803);
+ if (ret)
+ return ret;
+ }
+
+ return rv8803_regs_configure(rv8803);
+}
+
static irqreturn_t rv8803_handle_irq(int irq, void *dev_id)
{
struct i2c_client *client = dev_id;
@@ -269,6 +313,12 @@ static int rv8803_set_time(struct device *dev, struct rtc_time *tm)
return flags;
}
+ if (flags & RV8803_FLAG_V2F) {
+ ret = rv8803_regs_reset(rv8803);
+ if (ret)
+ return ret;
+ }
+
ret = rv8803_write_reg(rv8803->client, RV8803_FLAG,
flags & ~(RV8803_FLAG_V1F | RV8803_FLAG_V2F));
@@ -498,18 +548,32 @@ static int rx8900_trickle_charger_init(struct rv8803_data *rv8803)
if (err < 0)
return err;
- flags = ~(RX8900_FLAG_VDETOFF | RX8900_FLAG_SWOFF) & (u8)err;
-
- if (of_property_read_bool(node, "epson,vdet-disable"))
- flags |= RX8900_FLAG_VDETOFF;
-
- if (of_property_read_bool(node, "trickle-diode-disable"))
- flags |= RX8900_FLAG_SWOFF;
+ flags = (u8)err;
+ flags &= ~(RX8900_FLAG_VDETOFF | RX8900_FLAG_SWOFF);
+ flags |= rv8803->backup;
return i2c_smbus_write_byte_data(rv8803->client, RX8900_BACKUP_CTRL,
flags);
}
+/* configure registers with values different than the Power-On reset defaults */
+static int rv8803_regs_configure(struct rv8803_data *rv8803)
+{
+ int err;
+
+ err = rv8803_write_reg(rv8803->client, RV8803_EXT, RV8803_EXT_WADA);
+ if (err)
+ return err;
+
+ err = rx8900_trickle_charger_init(rv8803);
+ if (err) {
+ dev_err(&rv8803->client->dev, "failed to init charger\n");
+ return err;
+ }
+
+ return 0;
+}
+
static int rv8803_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -576,15 +640,15 @@ static int rv8803_probe(struct i2c_client *client,
if (!client->irq)
clear_bit(RTC_FEATURE_ALARM, rv8803->rtc->features);
- err = rv8803_write_reg(rv8803->client, RV8803_EXT, RV8803_EXT_WADA);
- if (err)
- return err;
+ if (of_property_read_bool(client->dev.of_node, "epson,vdet-disable"))
+ rv8803->backup |= RX8900_FLAG_VDETOFF;
- err = rx8900_trickle_charger_init(rv8803);
- if (err) {
- dev_err(&client->dev, "failed to init charger\n");
+ if (of_property_read_bool(client->dev.of_node, "trickle-diode-disable"))
+ rv8803->backup |= RX8900_FLAG_SWOFF;
+
+ err = rv8803_regs_configure(rv8803);
+ if (err)
return err;
- }
rv8803->rtc->ops = &rv8803_rtc_ops;
rv8803->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
@@ -603,7 +667,7 @@ static int rv8803_probe(struct i2c_client *client,
static const struct i2c_device_id rv8803_id[] = {
{ "rv8803", rv_8803 },
{ "rv8804", rx_8804 },
- { "rx8803", rv_8803 },
+ { "rx8803", rx_8803 },
{ "rx8900", rx_8900 },
{ }
};
@@ -616,7 +680,7 @@ static const __maybe_unused struct of_device_id rv8803_of_match[] = {
},
{
.compatible = "epson,rx8803",
- .data = (void *)rv_8803
+ .data = (void *)rx_8803
},
{
.compatible = "epson,rx8804",
diff --git a/drivers/rtc/rtc-rx6110.c b/drivers/rtc/rtc-rx6110.c
index 758fd6e11a15..cc634558b928 100644
--- a/drivers/rtc/rtc-rx6110.c
+++ b/drivers/rtc/rtc-rx6110.c
@@ -419,8 +419,7 @@ static struct regmap_config regmap_i2c_config = {
.read_flag_mask = 0x80,
};
-static int rx6110_i2c_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int rx6110_i2c_probe(struct i2c_client *client)
{
struct i2c_adapter *adapter = client->adapter;
struct rx6110_data *rx6110;
@@ -464,7 +463,7 @@ static struct i2c_driver rx6110_i2c_driver = {
.name = RX6110_DRIVER_NAME,
.acpi_match_table = rx6110_i2c_acpi_match,
},
- .probe = rx6110_i2c_probe,
+ .probe_new = rx6110_i2c_probe,
.id_table = rx6110_i2c_id,
};
diff --git a/drivers/rtc/rtc-rx8581.c b/drivers/rtc/rtc-rx8581.c
index aed4898a0ff4..14edb7534c97 100644
--- a/drivers/rtc/rtc-rx8581.c
+++ b/drivers/rtc/rtc-rx8581.c
@@ -248,8 +248,7 @@ static const struct rx85x1_config rx8571_config = {
.num_nvram = 2
};
-static int rx8581_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int rx8581_probe(struct i2c_client *client)
{
struct rx8581 *rx8581;
const struct rx85x1_config *config = &rx8581_config;
@@ -326,7 +325,7 @@ static struct i2c_driver rx8581_driver = {
.name = "rtc-rx8581",
.of_match_table = of_match_ptr(rx8581_of_match),
},
- .probe = rx8581_probe,
+ .probe_new = rx8581_probe,
.id_table = rx8581_id,
};
diff --git a/drivers/rtc/rtc-s35390a.c b/drivers/rtc/rtc-s35390a.c
index 26278c770731..81d97b1d3159 100644
--- a/drivers/rtc/rtc-s35390a.c
+++ b/drivers/rtc/rtc-s35390a.c
@@ -420,8 +420,7 @@ static const struct rtc_class_ops s35390a_rtc_ops = {
.ioctl = s35390a_rtc_ioctl,
};
-static int s35390a_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int s35390a_probe(struct i2c_client *client)
{
int err, err_read;
unsigned int i;
@@ -502,7 +501,7 @@ static struct i2c_driver s35390a_driver = {
.name = "rtc-s35390a",
.of_match_table = of_match_ptr(s35390a_of_match),
},
- .probe = s35390a_probe,
+ .probe_new = s35390a_probe,
.id_table = s35390a_id,
};
diff --git a/drivers/rtc/rtc-sd3078.c b/drivers/rtc/rtc-sd3078.c
index 24e8528e23ec..e2f90d768ca8 100644
--- a/drivers/rtc/rtc-sd3078.c
+++ b/drivers/rtc/rtc-sd3078.c
@@ -163,8 +163,7 @@ static const struct regmap_config regmap_config = {
.max_register = 0x11,
};
-static int sd3078_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int sd3078_probe(struct i2c_client *client)
{
int ret;
struct sd3078 *sd3078;
@@ -218,7 +217,7 @@ static struct i2c_driver sd3078_driver = {
.name = "sd3078",
.of_match_table = of_match_ptr(rtc_dt_match),
},
- .probe = sd3078_probe,
+ .probe_new = sd3078_probe,
.id_table = sd3078_id,
};
diff --git a/drivers/rtc/rtc-ti-k3.c b/drivers/rtc/rtc-ti-k3.c
new file mode 100644
index 000000000000..7a0f181d3fef
--- /dev/null
+++ b/drivers/rtc/rtc-ti-k3.c
@@ -0,0 +1,680 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Texas Instruments K3 RTC driver
+ *
+ * Copyright (C) 2021-2022 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+#include <linux/rtc.h>
+
+/* Registers */
+#define REG_K3RTC_S_CNT_LSW 0x08
+#define REG_K3RTC_S_CNT_MSW 0x0c
+#define REG_K3RTC_COMP 0x10
+#define REG_K3RTC_ON_OFF_S_CNT_LSW 0x20
+#define REG_K3RTC_ON_OFF_S_CNT_MSW 0x24
+#define REG_K3RTC_SCRATCH0 0x30
+#define REG_K3RTC_SCRATCH7 0x4c
+#define REG_K3RTC_GENERAL_CTL 0x50
+#define REG_K3RTC_IRQSTATUS_RAW_SYS 0x54
+#define REG_K3RTC_IRQSTATUS_SYS 0x58
+#define REG_K3RTC_IRQENABLE_SET_SYS 0x5c
+#define REG_K3RTC_IRQENABLE_CLR_SYS 0x60
+#define REG_K3RTC_SYNCPEND 0x68
+#define REG_K3RTC_KICK0 0x70
+#define REG_K3RTC_KICK1 0x74
+
+/* Freeze when lsw is read and unfreeze when msw is read */
+#define K3RTC_CNT_FMODE_S_CNT_VALUE (0x2 << 24)
+
+/* Magic values for lock/unlock */
+#define K3RTC_KICK0_UNLOCK_VALUE 0x83e70b13
+#define K3RTC_KICK1_UNLOCK_VALUE 0x95a4f1e0
+
+/* Multiplier for ppb conversions */
+#define K3RTC_PPB_MULT (1000000000LL)
+/* Min and max values supported with 'offset' interface (swapped sign) */
+#define K3RTC_MIN_OFFSET (-277761)
+#define K3RTC_MAX_OFFSET (277778)
+
+/**
+ * struct ti_k3_rtc_soc_data - Private of compatible data for ti-k3-rtc
+ * @unlock_irq_erratum: Has erratum for unlock infinite IRQs (erratum i2327)
+ */
+struct ti_k3_rtc_soc_data {
+ const bool unlock_irq_erratum;
+};
+
+static const struct regmap_config ti_k3_rtc_regmap_config = {
+ .name = "peripheral-registers",
+ .reg_bits = 32,
+ .val_bits = 32,
+ .reg_stride = 4,
+ .max_register = REG_K3RTC_KICK1,
+};
+
+enum ti_k3_rtc_fields {
+ K3RTC_KICK0,
+ K3RTC_KICK1,
+ K3RTC_S_CNT_LSW,
+ K3RTC_S_CNT_MSW,
+ K3RTC_O32K_OSC_DEP_EN,
+ K3RTC_UNLOCK,
+ K3RTC_CNT_FMODE,
+ K3RTC_PEND,
+ K3RTC_RELOAD_FROM_BBD,
+ K3RTC_COMP,
+
+ K3RTC_ALM_S_CNT_LSW,
+ K3RTC_ALM_S_CNT_MSW,
+ K3RTC_IRQ_STATUS_RAW,
+ K3RTC_IRQ_STATUS,
+ K3RTC_IRQ_ENABLE_SET,
+ K3RTC_IRQ_ENABLE_CLR,
+
+ K3RTC_IRQ_STATUS_ALT,
+ K3RTC_IRQ_ENABLE_CLR_ALT,
+
+ K3_RTC_MAX_FIELDS
+};
+
+static const struct reg_field ti_rtc_reg_fields[] = {
+ [K3RTC_KICK0] = REG_FIELD(REG_K3RTC_KICK0, 0, 31),
+ [K3RTC_KICK1] = REG_FIELD(REG_K3RTC_KICK1, 0, 31),
+ [K3RTC_S_CNT_LSW] = REG_FIELD(REG_K3RTC_S_CNT_LSW, 0, 31),
+ [K3RTC_S_CNT_MSW] = REG_FIELD(REG_K3RTC_S_CNT_MSW, 0, 15),
+ [K3RTC_O32K_OSC_DEP_EN] = REG_FIELD(REG_K3RTC_GENERAL_CTL, 21, 21),
+ [K3RTC_UNLOCK] = REG_FIELD(REG_K3RTC_GENERAL_CTL, 23, 23),
+ [K3RTC_CNT_FMODE] = REG_FIELD(REG_K3RTC_GENERAL_CTL, 24, 25),
+ [K3RTC_PEND] = REG_FIELD(REG_K3RTC_SYNCPEND, 0, 1),
+ [K3RTC_RELOAD_FROM_BBD] = REG_FIELD(REG_K3RTC_SYNCPEND, 31, 31),
+ [K3RTC_COMP] = REG_FIELD(REG_K3RTC_COMP, 0, 31),
+
+ /* We use on to off as alarm trigger */
+ [K3RTC_ALM_S_CNT_LSW] = REG_FIELD(REG_K3RTC_ON_OFF_S_CNT_LSW, 0, 31),
+ [K3RTC_ALM_S_CNT_MSW] = REG_FIELD(REG_K3RTC_ON_OFF_S_CNT_MSW, 0, 15),
+ [K3RTC_IRQ_STATUS_RAW] = REG_FIELD(REG_K3RTC_IRQSTATUS_RAW_SYS, 0, 0),
+ [K3RTC_IRQ_STATUS] = REG_FIELD(REG_K3RTC_IRQSTATUS_SYS, 0, 0),
+ [K3RTC_IRQ_ENABLE_SET] = REG_FIELD(REG_K3RTC_IRQENABLE_SET_SYS, 0, 0),
+ [K3RTC_IRQ_ENABLE_CLR] = REG_FIELD(REG_K3RTC_IRQENABLE_CLR_SYS, 0, 0),
+ /* Off to on is alternate */
+ [K3RTC_IRQ_STATUS_ALT] = REG_FIELD(REG_K3RTC_IRQSTATUS_SYS, 1, 1),
+ [K3RTC_IRQ_ENABLE_CLR_ALT] = REG_FIELD(REG_K3RTC_IRQENABLE_CLR_SYS, 1, 1),
+};
+
+/**
+ * struct ti_k3_rtc - Private data for ti-k3-rtc
+ * @irq: IRQ
+ * @sync_timeout_us: data sync timeout period in uSec
+ * @rate_32k: 32k clock rate in Hz
+ * @rtc_dev: rtc device
+ * @regmap: rtc mmio regmap
+ * @r_fields: rtc register fields
+ * @soc: SoC compatible match data
+ */
+struct ti_k3_rtc {
+ unsigned int irq;
+ u32 sync_timeout_us;
+ unsigned long rate_32k;
+ struct rtc_device *rtc_dev;
+ struct regmap *regmap;
+ struct regmap_field *r_fields[K3_RTC_MAX_FIELDS];
+ const struct ti_k3_rtc_soc_data *soc;
+};
+
+static int k3rtc_field_read(struct ti_k3_rtc *priv, enum ti_k3_rtc_fields f)
+{
+ int ret;
+ int val;
+
+ ret = regmap_field_read(priv->r_fields[f], &val);
+ /*
+ * We shouldn't be seeing regmap fail on us for mmio reads
+ * This is possible if clock context fails, but that isn't the case for us
+ */
+ if (WARN_ON_ONCE(ret))
+ return ret;
+ return val;
+}
+
+static void k3rtc_field_write(struct ti_k3_rtc *priv, enum ti_k3_rtc_fields f, u32 val)
+{
+ regmap_field_write(priv->r_fields[f], val);
+}
+
+/**
+ * k3rtc_fence - Ensure a register sync took place between the two domains
+ * @priv: pointer to priv data
+ *
+ * Return: 0 if the sync took place, else returns -ETIMEDOUT
+ */
+static int k3rtc_fence(struct ti_k3_rtc *priv)
+{
+ int ret;
+
+ ret = regmap_field_read_poll_timeout(priv->r_fields[K3RTC_PEND], ret,
+ !ret, 2, priv->sync_timeout_us);
+
+ return ret;
+}
+
+static inline int k3rtc_check_unlocked(struct ti_k3_rtc *priv)
+{
+ int ret;
+
+ ret = k3rtc_field_read(priv, K3RTC_UNLOCK);
+ if (ret < 0)
+ return ret;
+
+ return (ret) ? 0 : 1;
+}
+
+static int k3rtc_unlock_rtc(struct ti_k3_rtc *priv)
+{
+ int ret;
+
+ ret = k3rtc_check_unlocked(priv);
+ if (!ret)
+ return ret;
+
+ k3rtc_field_write(priv, K3RTC_KICK0, K3RTC_KICK0_UNLOCK_VALUE);
+ k3rtc_field_write(priv, K3RTC_KICK1, K3RTC_KICK1_UNLOCK_VALUE);
+
+ /* Skip fence since we are going to check the unlock bit as fence */
+ ret = regmap_field_read_poll_timeout(priv->r_fields[K3RTC_UNLOCK], ret,
+ !ret, 2, priv->sync_timeout_us);
+
+ return ret;
+}
+
+static int k3rtc_configure(struct device *dev)
+{
+ int ret;
+ struct ti_k3_rtc *priv = dev_get_drvdata(dev);
+
+ /*
+ * HWBUG: The compare state machine is broken if the RTC module
+ * is NOT unlocked in under one second of boot - which is pretty long
+ * time from the perspective of Linux driver (module load, u-boot
+ * shell all can take much longer than this.
+ *
+ * In such occurrence, it is assumed that the RTC module is unusable
+ */
+ if (priv->soc->unlock_irq_erratum) {
+ ret = k3rtc_check_unlocked(priv);
+ /* If there is an error OR if we are locked, return error */
+ if (ret) {
+ dev_err(dev,
+ HW_ERR "Erratum i2327 unlock QUIRK! Cannot operate!!\n");
+ return -EFAULT;
+ }
+ } else {
+ /* May need to explicitly unlock first time */
+ ret = k3rtc_unlock_rtc(priv);
+ if (ret) {
+ dev_err(dev, "Failed to unlock(%d)!\n", ret);
+ return ret;
+ }
+ }
+
+ /* Enable Shadow register sync on 32k clock boundary */
+ k3rtc_field_write(priv, K3RTC_O32K_OSC_DEP_EN, 0x1);
+
+ /*
+ * Wait at least clock sync time before proceeding further programming.
+ * This ensures that the 32k based sync is active.
+ */
+ usleep_range(priv->sync_timeout_us, priv->sync_timeout_us + 5);
+
+ /* We need to ensure fence here to make sure sync here */
+ ret = k3rtc_fence(priv);
+ if (ret) {
+ dev_err(dev,
+ "Failed fence osc_dep enable(%d) - is 32k clk working?!\n", ret);
+ return ret;
+ }
+
+ /*
+ * FMODE setting: Reading lower seconds will freeze value on higher
+ * seconds. This also implies that we must *ALWAYS* read lower seconds
+ * prior to reading higher seconds
+ */
+ k3rtc_field_write(priv, K3RTC_CNT_FMODE, K3RTC_CNT_FMODE_S_CNT_VALUE);
+
+ /* Clear any spurious IRQ sources if any */
+ k3rtc_field_write(priv, K3RTC_IRQ_STATUS_ALT, 0x1);
+ k3rtc_field_write(priv, K3RTC_IRQ_STATUS, 0x1);
+ /* Disable all IRQs */
+ k3rtc_field_write(priv, K3RTC_IRQ_ENABLE_CLR_ALT, 0x1);
+ k3rtc_field_write(priv, K3RTC_IRQ_ENABLE_CLR, 0x1);
+
+ /* And.. Let us Sync the writes in */
+ return k3rtc_fence(priv);
+}
+
+static int ti_k3_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+ struct ti_k3_rtc *priv = dev_get_drvdata(dev);
+ u32 seconds_lo, seconds_hi;
+
+ seconds_lo = k3rtc_field_read(priv, K3RTC_S_CNT_LSW);
+ seconds_hi = k3rtc_field_read(priv, K3RTC_S_CNT_MSW);
+
+ rtc_time64_to_tm((((time64_t)seconds_hi) << 32) | (time64_t)seconds_lo, tm);
+
+ return 0;
+}
+
+static int ti_k3_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+ struct ti_k3_rtc *priv = dev_get_drvdata(dev);
+ time64_t seconds;
+
+ seconds = rtc_tm_to_time64(tm);
+
+ /*
+ * Read operation on LSW will freeze the RTC, so to update
+ * the time, we cannot use field operations. Just write since the
+ * reserved bits are ignored.
+ */
+ regmap_write(priv->regmap, REG_K3RTC_S_CNT_LSW, seconds);
+ regmap_write(priv->regmap, REG_K3RTC_S_CNT_MSW, seconds >> 32);
+
+ return k3rtc_fence(priv);
+}
+
+static int ti_k3_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
+{
+ struct ti_k3_rtc *priv = dev_get_drvdata(dev);
+ u32 reg;
+ u32 offset = enabled ? K3RTC_IRQ_ENABLE_SET : K3RTC_IRQ_ENABLE_CLR;
+
+ reg = k3rtc_field_read(priv, K3RTC_IRQ_ENABLE_SET);
+ if ((enabled && reg) || (!enabled && !reg))
+ return 0;
+
+ k3rtc_field_write(priv, offset, 0x1);
+
+ /*
+ * Ensure the write sync is through - NOTE: it should be OK to have
+ * ISR to fire as we are checking sync (which should be done in a 32k
+ * cycle or so).
+ */
+ return k3rtc_fence(priv);
+}
+
+static int ti_k3_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
+{
+ struct ti_k3_rtc *priv = dev_get_drvdata(dev);
+ u32 seconds_lo, seconds_hi;
+
+ seconds_lo = k3rtc_field_read(priv, K3RTC_ALM_S_CNT_LSW);
+ seconds_hi = k3rtc_field_read(priv, K3RTC_ALM_S_CNT_MSW);
+
+ rtc_time64_to_tm((((time64_t)seconds_hi) << 32) | (time64_t)seconds_lo, &alarm->time);
+
+ alarm->enabled = k3rtc_field_read(priv, K3RTC_IRQ_ENABLE_SET);
+
+ return 0;
+}
+
+static int ti_k3_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
+{
+ struct ti_k3_rtc *priv = dev_get_drvdata(dev);
+ time64_t seconds;
+ int ret;
+
+ seconds = rtc_tm_to_time64(&alarm->time);
+
+ k3rtc_field_write(priv, K3RTC_ALM_S_CNT_LSW, seconds);
+ k3rtc_field_write(priv, K3RTC_ALM_S_CNT_MSW, (seconds >> 32));
+
+ /* Make sure the alarm time is synced in */
+ ret = k3rtc_fence(priv);
+ if (ret) {
+ dev_err(dev, "Failed to fence(%d)! Potential config issue?\n", ret);
+ return ret;
+ }
+
+ /* Alarm IRQ enable will do a sync */
+ return ti_k3_rtc_alarm_irq_enable(dev, alarm->enabled);
+}
+
+static int ti_k3_rtc_read_offset(struct device *dev, long *offset)
+{
+ struct ti_k3_rtc *priv = dev_get_drvdata(dev);
+ u32 ticks_per_hr = priv->rate_32k * 3600;
+ int comp;
+ s64 tmp;
+
+ comp = k3rtc_field_read(priv, K3RTC_COMP);
+
+ /* Convert from RTC calibration register format to ppb format */
+ tmp = comp * (s64)K3RTC_PPB_MULT;
+ if (tmp < 0)
+ tmp -= ticks_per_hr / 2LL;
+ else
+ tmp += ticks_per_hr / 2LL;
+ tmp = div_s64(tmp, ticks_per_hr);
+
+ /* Offset value operates in negative way, so swap sign */
+ *offset = (long)-tmp;
+
+ return 0;
+}
+
+static int ti_k3_rtc_set_offset(struct device *dev, long offset)
+{
+ struct ti_k3_rtc *priv = dev_get_drvdata(dev);
+ u32 ticks_per_hr = priv->rate_32k * 3600;
+ int comp;
+ s64 tmp;
+
+ /* Make sure offset value is within supported range */
+ if (offset < K3RTC_MIN_OFFSET || offset > K3RTC_MAX_OFFSET)
+ return -ERANGE;
+
+ /* Convert from ppb format to RTC calibration register format */
+ tmp = offset * (s64)ticks_per_hr;
+ if (tmp < 0)
+ tmp -= K3RTC_PPB_MULT / 2LL;
+ else
+ tmp += K3RTC_PPB_MULT / 2LL;
+ tmp = div_s64(tmp, K3RTC_PPB_MULT);
+
+ /* Offset value operates in negative way, so swap sign */
+ comp = (int)-tmp;
+
+ k3rtc_field_write(priv, K3RTC_COMP, comp);
+
+ return k3rtc_fence(priv);
+}
+
+static irqreturn_t ti_k3_rtc_interrupt(s32 irq, void *dev_id)
+{
+ struct device *dev = dev_id;
+ struct ti_k3_rtc *priv = dev_get_drvdata(dev);
+ u32 reg;
+ int ret;
+
+ /*
+ * IRQ assertion can be very fast, however, the IRQ Status clear
+ * de-assert depends on 32k clock edge in the 32k domain
+ * If we clear the status prior to the first 32k clock edge,
+ * the status bit is cleared, but the IRQ stays re-asserted.
+ *
+ * To prevent this condition, we need to wait for clock sync time.
+ * We can either do that by polling the 32k observability signal for
+ * a toggle OR we could just sleep and let the processor do other
+ * stuff.
+ */
+ usleep_range(priv->sync_timeout_us, priv->sync_timeout_us + 2);
+
+ /* Lets make sure that this is a valid interrupt */
+ reg = k3rtc_field_read(priv, K3RTC_IRQ_STATUS);
+
+ if (!reg) {
+ u32 raw = k3rtc_field_read(priv, K3RTC_IRQ_STATUS_RAW);
+
+ dev_err(dev,
+ HW_ERR
+ "Erratum i2327/IRQ trig: status: 0x%08x / 0x%08x\n", reg, raw);
+ return IRQ_NONE;
+ }
+
+ /*
+ * Write 1 to clear status reg
+ * We cannot use a field operation here due to a potential race between
+ * 32k domain and vbus domain.
+ */
+ regmap_write(priv->regmap, REG_K3RTC_IRQSTATUS_SYS, 0x1);
+
+ /* Sync the write in */
+ ret = k3rtc_fence(priv);
+ if (ret) {
+ dev_err(dev, "Failed to fence irq status clr(%d)!\n", ret);
+ return IRQ_NONE;
+ }
+
+ /*
+ * Force the 32k status to be reloaded back in to ensure status is
+ * reflected back correctly.
+ */
+ k3rtc_field_write(priv, K3RTC_RELOAD_FROM_BBD, 0x1);
+
+ /* Ensure the write sync is through */
+ ret = k3rtc_fence(priv);
+ if (ret) {
+ dev_err(dev, "Failed to fence reload from bbd(%d)!\n", ret);
+ return IRQ_NONE;
+ }
+
+ /* Now we ensure that the status bit is cleared */
+ ret = regmap_field_read_poll_timeout(priv->r_fields[K3RTC_IRQ_STATUS],
+ ret, !ret, 2, priv->sync_timeout_us);
+ if (ret) {
+ dev_err(dev, "Time out waiting for status clear\n");
+ return IRQ_NONE;
+ }
+
+ /* Notify RTC core on event */
+ rtc_update_irq(priv->rtc_dev, 1, RTC_IRQF | RTC_AF);
+
+ return IRQ_HANDLED;
+}
+
+static const struct rtc_class_ops ti_k3_rtc_ops = {
+ .read_time = ti_k3_rtc_read_time,
+ .set_time = ti_k3_rtc_set_time,
+ .read_alarm = ti_k3_rtc_read_alarm,
+ .set_alarm = ti_k3_rtc_set_alarm,
+ .read_offset = ti_k3_rtc_read_offset,
+ .set_offset = ti_k3_rtc_set_offset,
+ .alarm_irq_enable = ti_k3_rtc_alarm_irq_enable,
+};
+
+static int ti_k3_rtc_scratch_read(void *priv_data, unsigned int offset,
+ void *val, size_t bytes)
+{
+ struct ti_k3_rtc *priv = (struct ti_k3_rtc *)priv_data;
+
+ return regmap_bulk_read(priv->regmap, REG_K3RTC_SCRATCH0 + offset, val, bytes / 4);
+}
+
+static int ti_k3_rtc_scratch_write(void *priv_data, unsigned int offset,
+ void *val, size_t bytes)
+{
+ struct ti_k3_rtc *priv = (struct ti_k3_rtc *)priv_data;
+ int ret;
+
+ ret = regmap_bulk_write(priv->regmap, REG_K3RTC_SCRATCH0 + offset, val, bytes / 4);
+ if (ret)
+ return ret;
+
+ return k3rtc_fence(priv);
+}
+
+static struct nvmem_config ti_k3_rtc_nvmem_config = {
+ .name = "ti_k3_rtc_scratch",
+ .word_size = 4,
+ .stride = 4,
+ .size = REG_K3RTC_SCRATCH7 - REG_K3RTC_SCRATCH0 + 4,
+ .reg_read = ti_k3_rtc_scratch_read,
+ .reg_write = ti_k3_rtc_scratch_write,
+};
+
+static int k3rtc_get_32kclk(struct device *dev, struct ti_k3_rtc *priv)
+{
+ int ret;
+ struct clk *clk;
+
+ clk = devm_clk_get(dev, "osc32k");
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
+
+ ret = clk_prepare_enable(clk);
+ if (ret)
+ return ret;
+
+ ret = devm_add_action_or_reset(dev, (void (*)(void *))clk_disable_unprepare, clk);
+ if (ret)
+ return ret;
+
+ priv->rate_32k = clk_get_rate(clk);
+
+ /* Make sure we are exact 32k clock. Else, try to compensate delay */
+ if (priv->rate_32k != 32768)
+ dev_warn(dev, "Clock rate %ld is not 32768! Could misbehave!\n",
+ priv->rate_32k);
+
+ /*
+ * Sync timeout should be two 32k clk sync cycles = ~61uS. We double
+ * it to comprehend intermediate bus segment and cpu frequency
+ * deltas
+ */
+ priv->sync_timeout_us = (u32)(DIV_ROUND_UP_ULL(1000000, priv->rate_32k) * 4);
+
+ return ret;
+}
+
+static int k3rtc_get_vbusclk(struct device *dev, struct ti_k3_rtc *priv)
+{
+ int ret;
+ struct clk *clk;
+
+ /* Note: VBUS isn't a context clock, it is needed for hardware operation */
+ clk = devm_clk_get(dev, "vbus");
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
+
+ ret = clk_prepare_enable(clk);
+ if (ret)
+ return ret;
+
+ return devm_add_action_or_reset(dev, (void (*)(void *))clk_disable_unprepare, clk);
+}
+
+static int ti_k3_rtc_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct ti_k3_rtc *priv;
+ void __iomem *rtc_base;
+ int ret;
+
+ priv = devm_kzalloc(dev, sizeof(struct ti_k3_rtc), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ rtc_base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(rtc_base))
+ return PTR_ERR(rtc_base);
+
+ priv->regmap = devm_regmap_init_mmio(dev, rtc_base, &ti_k3_rtc_regmap_config);
+ if (IS_ERR(priv->regmap))
+ return PTR_ERR(priv->regmap);
+
+ ret = devm_regmap_field_bulk_alloc(dev, priv->regmap, priv->r_fields,
+ ti_rtc_reg_fields, K3_RTC_MAX_FIELDS);
+ if (ret)
+ return ret;
+
+ ret = k3rtc_get_32kclk(dev, priv);
+ if (ret)
+ return ret;
+ ret = k3rtc_get_vbusclk(dev, priv);
+ if (ret)
+ return ret;
+
+ ret = platform_get_irq(pdev, 0);
+ if (ret < 0)
+ return ret;
+ priv->irq = (unsigned int)ret;
+
+ priv->rtc_dev = devm_rtc_allocate_device(dev);
+ if (IS_ERR(priv->rtc_dev))
+ return PTR_ERR(priv->rtc_dev);
+
+ priv->soc = of_device_get_match_data(dev);
+
+ priv->rtc_dev->ops = &ti_k3_rtc_ops;
+ priv->rtc_dev->range_max = (1ULL << 48) - 1; /* 48Bit seconds */
+ ti_k3_rtc_nvmem_config.priv = priv;
+
+ ret = devm_request_threaded_irq(dev, priv->irq, NULL,
+ ti_k3_rtc_interrupt,
+ IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
+ dev_name(dev), dev);
+ if (ret) {
+ dev_err(dev, "Could not request IRQ: %d\n", ret);
+ return ret;
+ }
+
+ platform_set_drvdata(pdev, priv);
+
+ ret = k3rtc_configure(dev);
+ if (ret)
+ return ret;
+
+ if (device_property_present(dev, "wakeup-source"))
+ device_init_wakeup(dev, true);
+ else
+ device_set_wakeup_capable(dev, true);
+
+ ret = devm_rtc_register_device(priv->rtc_dev);
+ if (ret)
+ return ret;
+
+ return devm_rtc_nvmem_register(priv->rtc_dev, &ti_k3_rtc_nvmem_config);
+}
+
+static const struct ti_k3_rtc_soc_data ti_k3_am62_data = {
+ .unlock_irq_erratum = true,
+};
+
+static const struct of_device_id ti_k3_rtc_of_match_table[] = {
+ {.compatible = "ti,am62-rtc", .data = &ti_k3_am62_data},
+ {}
+};
+MODULE_DEVICE_TABLE(of, ti_k3_rtc_of_match_table);
+
+static int __maybe_unused ti_k3_rtc_suspend(struct device *dev)
+{
+ struct ti_k3_rtc *priv = dev_get_drvdata(dev);
+
+ if (device_may_wakeup(dev))
+ enable_irq_wake(priv->irq);
+ return 0;
+}
+
+static int __maybe_unused ti_k3_rtc_resume(struct device *dev)
+{
+ struct ti_k3_rtc *priv = dev_get_drvdata(dev);
+
+ if (device_may_wakeup(dev))
+ disable_irq_wake(priv->irq);
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(ti_k3_rtc_pm_ops, ti_k3_rtc_suspend, ti_k3_rtc_resume);
+
+static struct platform_driver ti_k3_rtc_driver = {
+ .probe = ti_k3_rtc_probe,
+ .driver = {
+ .name = "rtc-ti-k3",
+ .of_match_table = ti_k3_rtc_of_match_table,
+ .pm = &ti_k3_rtc_pm_ops,
+ },
+};
+module_platform_driver(ti_k3_rtc_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("TI K3 RTC driver");
+MODULE_AUTHOR("Nishanth Menon");
diff --git a/drivers/rtc/rtc-x1205.c b/drivers/rtc/rtc-x1205.c
index d1d5a44d9122..ba0d22a5b421 100644
--- a/drivers/rtc/rtc-x1205.c
+++ b/drivers/rtc/rtc-x1205.c
@@ -614,8 +614,7 @@ static void x1205_sysfs_unregister(struct device *dev)
}
-static int x1205_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int x1205_probe(struct i2c_client *client)
{
int err = 0;
unsigned char sr;
@@ -681,7 +680,7 @@ static struct i2c_driver x1205_driver = {
.name = "rtc-x1205",
.of_match_table = x1205_dt_ids,
},
- .probe = x1205_probe,
+ .probe_new = x1205_probe,
.remove = x1205_remove,
.id_table = x1205_id,
};