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Message-Id: <20250407193521.634807-3-apokusinski01@gmail.com>
Date: Mon, 7 Apr 2025 21:35:20 +0200
From: Antoni Pokusinski <apokusinski01@...il.com>
To: alexandre.belloni@...tlin.com,
krzk+dt@...nel.org,
conor+dt@...nel.org,
robh@...nel.org,
alexander.stein@...tq-group.com
Cc: linux-rtc@...r.kernel.org,
linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org,
Antoni Pokusinski <apokusinski01@...il.com>
Subject: [PATCH 2/3] rtc: pcf85063: add support for RV8063
Microcrystal RV8063 is a real-time clock with SPI interface. Its
functionality is very similar to the RV8263 rtc.
Signed-off-by: Antoni Pokusinski <apokusinski01@...il.com>
---
drivers/rtc/Kconfig | 21 ++++++-----
drivers/rtc/rtc-pcf85063.c | 74 +++++++++++++++++++++++++++++++++++++-
2 files changed, 85 insertions(+), 10 deletions(-)
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 838bdc138ffe..1b9be96faa13 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -483,15 +483,6 @@ config RTC_DRV_PCF8523
This driver can also be built as a module. If so, the module
will be called rtc-pcf8523.
-config RTC_DRV_PCF85063
- tristate "NXP PCF85063"
- select REGMAP_I2C
- help
- If you say yes here you get support for the PCF85063 RTC chip
-
- This driver can also be built as a module. If so, the module
- will be called rtc-pcf85063.
-
config RTC_DRV_PCF85363
tristate "NXP PCF85363"
select REGMAP_I2C
@@ -971,6 +962,18 @@ config RTC_DRV_PCF2127
This driver can also be built as a module. If so, the module
will be called rtc-pcf2127.
+config RTC_DRV_PCF85063
+ tristate "NXP PCF85063"
+ depends on RTC_I2C_AND_SPI
+ select REGMAP_I2C if I2C
+ select REGMAP_SPI if SPI_MASTER
+ help
+ If you say yes here you get support for the PCF85063 and RV8063
+ RTC chips.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-pcf85063.
+
config RTC_DRV_RV3029C2
tristate "Micro Crystal RV3029/3049"
depends on RTC_I2C_AND_SPI
diff --git a/drivers/rtc/rtc-pcf85063.c b/drivers/rtc/rtc-pcf85063.c
index 03dfc58f4cd7..512933479dd5 100644
--- a/drivers/rtc/rtc-pcf85063.c
+++ b/drivers/rtc/rtc-pcf85063.c
@@ -17,6 +17,7 @@
#include <linux/of.h>
#include <linux/pm_wakeirq.h>
#include <linux/regmap.h>
+#include <linux/spi/spi.h>
/*
* Information for this driver was pulled from the following datasheets.
@@ -29,6 +30,9 @@
*
* https://www.microcrystal.com/fileadmin/Media/Products/RTC/App.Manual/RV-8263-C7_App-Manual.pdf
* RV8263 -- Rev. 1.0 — January 2019
+ *
+ * https://www.microcrystal.com/fileadmin/Media/Products/RTC/App.Manual/RV-8063-C7_App-Manual.pdf
+ * RV8063 -- Rev. 1.1 - October 2018
*/
#define PCF85063_REG_CTRL1 0x00 /* status */
@@ -559,6 +563,18 @@ static const struct pcf85063_config config_rv8263 = {
.force_cap_7000 = 1,
};
+static const struct pcf85063_config config_rv8063 = {
+ .regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0x11,
+ .read_flag_mask = BIT(7) | BIT(5),
+ .write_flag_mask = BIT(5),
+ },
+ .has_alarms = 1,
+ .force_cap_7000 = 1,
+};
+
static int pcf85063_probe(struct device *dev, struct regmap *regmap, int irq,
const struct pcf85063_config *config)
{
@@ -725,14 +741,69 @@ static void pcf85063_unregister_driver(void)
#endif /* IS_ENABLED(CONFIG_I2C) */
+#if IS_ENABLED(CONFIG_SPI_MASTER)
+
+static int rv8063_probe(struct spi_device *spi)
+{
+ const struct pcf85063_config *config = &config_rv8063;
+ struct regmap *regmap;
+
+ regmap = devm_regmap_init_spi(spi, &config->regmap);
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
+ return pcf85063_probe(&spi->dev, regmap, spi->irq, config);
+}
+
+static struct spi_driver rv8063_driver = {
+ .driver = {
+ .name = "rv8063",
+ },
+ .probe = rv8063_probe,
+};
+
+static int __init rv8063_register_driver(void)
+{
+ return spi_register_driver(&rv8063_driver);
+}
+
+static void __exit rv8063_unregister_driver(void)
+{
+ spi_unregister_driver(&rv8063_driver);
+}
+
+#else
+
+static int __init rv8063_register_driver(void)
+{
+ return 0;
+}
+
+static void __exit rv8063_unregister_driver(void)
+{
+}
+
+#endif /* IS_ENABLED(CONFIG_SPI_MASTER) */
+
static int __init pcf85063_init(void)
{
- return pcf85063_register_driver();
+ int ret;
+
+ ret = pcf85063_register_driver();
+ if (ret)
+ return ret;
+
+ ret = rv8063_register_driver();
+ if (ret)
+ pcf85063_unregister_driver();
+
+ return ret;
}
module_init(pcf85063_init);
static void __exit pcf85063_exit(void)
{
+ rv8063_unregister_driver();
pcf85063_unregister_driver();
}
module_exit(pcf85063_exit);
@@ -740,3 +811,4 @@ module_exit(pcf85063_exit);
MODULE_AUTHOR("Søren Andersen <san@...etechnology.dk>");
MODULE_DESCRIPTION("PCF85063 RTC driver");
MODULE_LICENSE("GPL");
+MODULE_ALIAS("spi:rv8063");
--
2.25.1
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