Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit c2a1c145 authored by Mylène Josserand's avatar Mylène Josserand Committed by Alexandre Belloni
Browse files

rtc: rv3029: Add support of RV3049 



Add support of Microcrystal RV3049 RTC (SPI) using regmap on the
RV3029 (I2C) driver.

Signed-off-by: default avatarMylène Josserand <mylene.josserand@free-electrons.com>
Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@free-electrons.com>
parent e6e38082

drivers/rtc/Kconfig

+19 −18
Original line number Original line Diff line number Diff line
@@ -573,24 +573,6 @@ config RTC_DRV_EM3027 
	  This driver can also be built as a module. If so, the module

	  This driver can also be built as a module. If so, the module

	  will be called rtc-em3027.

	  will be called rtc-em3027.





config RTC_DRV_RV3029C2

	tristate "Micro Crystal RV3029"

	help

	  If you say yes here you get support for the Micro Crystal

	  RV3029 RTC chips.



	  This driver can also be built as a module. If so, the module

	  will be called rtc-rv3029c2.



config RTC_DRV_RV3029_HWMON

	bool "HWMON support for RV3029"

	depends on RTC_DRV_RV3029C2 && HWMON

	depends on !(RTC_DRV_RV3029C2=y && HWMON=m)

	default y

	help

	  Say Y here if you want to expose temperature sensor data on

	  rtc-rv3029.



config RTC_DRV_RV8803

config RTC_DRV_RV8803

	tristate "Micro Crystal RV8803"

	tristate "Micro Crystal RV8803"

	help

	help
@@ -786,6 +768,25 @@ config RTC_DRV_PCF2127 
	  This driver can also be built as a module. If so, the module

	  This driver can also be built as a module. If so, the module

	  will be called rtc-pcf2127.

	  will be called rtc-pcf2127.





config RTC_DRV_RV3029C2

	tristate "Micro Crystal RV3029/3049"

	depends on RTC_I2C_AND_SPI

	help

	  If you say yes here you get support for the Micro Crystal

	  RV3029 and RV3049 RTC chips.



	  This driver can also be built as a module. If so, the module

	  will be called rtc-rv3029c2.



config RTC_DRV_RV3029_HWMON

	bool "HWMON support for RV3029/3049"

	depends on RTC_DRV_RV3029C2 && HWMON

	depends on !(RTC_DRV_RV3029C2=y && HWMON=m)

	default y

	help

	  Say Y here if you want to expose temperature sensor data on

	  rtc-rv3029.



comment "Platform RTC drivers"

comment "Platform RTC drivers"





# this 'CMOS' RTC driver is arch dependent because <asm-generic/rtc.h>

# this 'CMOS' RTC driver is arch dependent because <asm-generic/rtc.h>

drivers/rtc/rtc-rv3029c2.c

+105 −3
Original line number Original line Diff line number Diff line 
/*

/*

 * Micro Crystal RV-3029 rtc class driver

 * Micro Crystal RV-3029 / RV-3049 rtc class driver

 *

 *

 * Author: Gregory Hermant <gregory.hermant@calao-systems.com>

 * Author: Gregory Hermant <gregory.hermant@calao-systems.com>

 *         Michael Buesch <m@bues.ch>

 *         Michael Buesch <m@bues.ch>
@@ -14,6 +14,7 @@ 




#include <linux/module.h>

#include <linux/module.h>

#include <linux/i2c.h>

#include <linux/i2c.h>

#include <linux/spi/spi.h>

#include <linux/bcd.h>

#include <linux/bcd.h>

#include <linux/rtc.h>

#include <linux/rtc.h>

#include <linux/delay.h>

#include <linux/delay.h>
@@ -766,6 +767,8 @@ static int rv3029_probe(struct device *dev, struct regmap *regmap, int irq, 
	return PTR_ERR_OR_ZERO(rv3029->rtc);

	return PTR_ERR_OR_ZERO(rv3029->rtc);

}

}





#if IS_ENABLED(CONFIG_I2C)



static int rv3029_i2c_probe(struct i2c_client *client,

static int rv3029_i2c_probe(struct i2c_client *client,

			    const struct i2c_device_id *id)

			    const struct i2c_device_id *id)

{

{
@@ -799,9 +802,108 @@ static struct i2c_driver rv3029_driver = { 
	.id_table	= rv3029_id,

	.id_table	= rv3029_id,

};

};





module_i2c_driver(rv3029_driver);

static int rv3029_register_driver(void)

{

	return i2c_add_driver(&rv3029_driver);

}



static void rv3029_unregister_driver(void)

{

	i2c_del_driver(&rv3029_driver);

}



#else



static int rv3029_register_driver(void)

{

	return 0;

}



static void rv3029_unregister_driver(void)

{

}



#endif



#if IS_ENABLED(CONFIG_SPI_MASTER)



static int rv3049_probe(struct spi_device *spi)

{

	static const struct regmap_config config = {

		.reg_bits = 8,

		.val_bits = 8,

	};

	struct regmap *regmap;



	regmap = devm_regmap_init_spi(spi, &config);

	if (IS_ERR(regmap)) {

		dev_err(&spi->dev, "%s: regmap allocation failed: %ld\n",

			__func__, PTR_ERR(regmap));

		return PTR_ERR(regmap);

	}



	return rv3029_probe(&spi->dev, regmap, spi->irq, "rv3049");

}



static struct spi_driver rv3049_driver = {

	.driver = {

		.name    = "rv3049",

	},

	.probe   = rv3049_probe,

};



static int rv3049_register_driver(void)

{

	return spi_register_driver(&rv3049_driver);

}



static void rv3049_unregister_driver(void)

{

	spi_unregister_driver(&rv3049_driver);

}



#else



static int rv3049_register_driver(void)

{

	return 0;

}



static void rv3049_unregister_driver(void)

{

}



#endif



static int __init rv30x9_init(void)

{

	int ret;



	ret = rv3029_register_driver();

	if (ret) {

		pr_err("Failed to register rv3029 driver: %d\n", ret);

		return ret;

	}



	ret = rv3049_register_driver();

	if (ret) {

		pr_err("Failed to register rv3049 driver: %d\n", ret);

		rv3029_unregister_driver();

	}



	return ret;

}

module_init(rv30x9_init)



static void __exit rv30x9_exit(void)

{

	rv3049_unregister_driver();

	rv3029_unregister_driver();

}

module_exit(rv30x9_exit)





MODULE_AUTHOR("Gregory Hermant <gregory.hermant@calao-systems.com>");

MODULE_AUTHOR("Gregory Hermant <gregory.hermant@calao-systems.com>");

MODULE_AUTHOR("Michael Buesch <m@bues.ch>");

MODULE_AUTHOR("Michael Buesch <m@bues.ch>");

MODULE_DESCRIPTION("Micro Crystal RV3029 RTC driver");

MODULE_DESCRIPTION("Micro Crystal RV3029/RV3049 RTC driver");

MODULE_LICENSE("GPL");

MODULE_LICENSE("GPL");

MODULE_ALIAS("spi:rv3049");