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Mon, 07 Apr 2025 12:36:20 -0700 (PDT) From: Antoni Pokusinski To: alexandre.belloni@bootlin.com, krzk+dt@kernel.org, conor+dt@kernel.org, robh@kernel.org, alexander.stein@ew.tq-group.com Cc: linux-rtc@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Antoni Pokusinski Subject: [PATCH 2/3] rtc: pcf85063: add support for RV8063 Date: Mon, 7 Apr 2025 21:35:20 +0200 Message-Id: <20250407193521.634807-3-apokusinski01@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250407193521.634807-1-apokusinski01@gmail.com> References: <20250407193521.634807-1-apokusinski01@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Microcrystal RV8063 is a real-time clock with SPI interface. Its functionality is very similar to the RV8263 rtc. Signed-off-by: Antoni Pokusinski --- 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. =20 -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. =20 +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 #include #include +#include =20 /* * Information for this driver was pulled from the following datasheets. @@ -29,6 +30,9 @@ * * https://www.microcrystal.com/fileadmin/Media/Products/RTC/App.Manual/R= V-8263-C7_App-Manual.pdf * RV8263 -- Rev. 1.0 =E2=80=94 January 2019 + * + * https://www.microcrystal.com/fileadmin/Media/Products/RTC/App.Manual/R= V-8063-C7_App-Manual.pdf + * RV8063 -- Rev. 1.1 - October 2018 */ =20 #define PCF85063_REG_CTRL1 0x00 /* status */ @@ -559,6 +563,18 @@ static const struct pcf85063_config config_rv8263 =3D { .force_cap_7000 =3D 1, }; =20 +static const struct pcf85063_config config_rv8063 =3D { + .regmap =3D { + .reg_bits =3D 8, + .val_bits =3D 8, + .max_register =3D 0x11, + .read_flag_mask =3D BIT(7) | BIT(5), + .write_flag_mask =3D BIT(5), + }, + .has_alarms =3D 1, + .force_cap_7000 =3D 1, +}; + static int pcf85063_probe(struct device *dev, struct regmap *regmap, int i= rq, const struct pcf85063_config *config) { @@ -725,14 +741,69 @@ static void pcf85063_unregister_driver(void) =20 #endif /* IS_ENABLED(CONFIG_I2C) */ =20 +#if IS_ENABLED(CONFIG_SPI_MASTER) + +static int rv8063_probe(struct spi_device *spi) +{ + const struct pcf85063_config *config =3D &config_rv8063; + struct regmap *regmap; + + regmap =3D 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 =3D { + .driver =3D { + .name =3D "rv8063", + }, + .probe =3D 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 =3D pcf85063_register_driver(); + if (ret) + return ret; + + ret =3D rv8063_register_driver(); + if (ret) + pcf85063_unregister_driver(); + + return ret; } module_init(pcf85063_init); =20 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("S=C3=B8ren Andersen "); MODULE_DESCRIPTION("PCF85063 RTC driver"); MODULE_LICENSE("GPL"); +MODULE_ALIAS("spi:rv8063"); --=20 2.25.1