hwmon: (pmbus/tda38640) Add driver for Infineon TDA38640 Voltage Regulator

Add the pmbus driver for the Infineon TDA38640 voltage regulator.

Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Naresh Solanki <Naresh.Solanki@9elements.com>
Link: https://lore.kernel.org/r/20230124202317.3704963-2-Naresh.Solanki@9elements.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig
index 30448e0494868a2192b0c84b9a14717f7f47a269..9f4bbb9c487a92782102d16d652394cbd126d337 100644 (file)
--- a/drivers/hwmon/pmbus/Kconfig
+++ b/drivers/hwmon/pmbus/Kconfig
@@ -395,6 +395,22 @@ config SENSORS_STPDDC60
          This driver can also be built as a module. If so, the module will
          be called stpddc60.
 
+config SENSORS_TDA38640
+       tristate "Infineon TDA38640"
+       help
+         If you say yes here you get hardware monitoring support for Infineon
+         TDA38640.
+
+         This driver can also be built as a module. If so, the module will
+         be called tda38640.
+
+config SENSORS_TDA38640_REGULATOR
+       bool "Regulator support for TDA38640 and compatibles"
+       depends on SENSORS_TDA38640 && REGULATOR
+       help
+         If you say yes here you get regulator support for Infineon
+         TDA38640 as regulator.
+
 config SENSORS_TPS40422
        tristate "TI TPS40422"
        help

diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile
index d9d2fa4bd6f7eb68177774ede767719fe0ecb96c..3ae01991626779d4d55b98fc5bda3f813285cb67 100644 (file)
--- a/drivers/hwmon/pmbus/Makefile
+++ b/drivers/hwmon/pmbus/Makefile
@@ -40,6 +40,7 @@ obj-$(CONFIG_SENSORS_PM6764TR)        += pm6764tr.o
 obj-$(CONFIG_SENSORS_PXE1610)  += pxe1610.o
 obj-$(CONFIG_SENSORS_Q54SJ108A2)       += q54sj108a2.o
 obj-$(CONFIG_SENSORS_STPDDC60) += stpddc60.o
+obj-$(CONFIG_SENSORS_TDA38640) += tda38640.o
 obj-$(CONFIG_SENSORS_TPS40422) += tps40422.o
 obj-$(CONFIG_SENSORS_TPS53679) += tps53679.o
 obj-$(CONFIG_SENSORS_TPS546D24)        += tps546d24.o

diff --git a/drivers/hwmon/pmbus/tda38640.c b/drivers/hwmon/pmbus/tda38640.c
new file mode 100644 (file)
index 0000000..c3e7813
--- /dev/null
+++ b/drivers/hwmon/pmbus/tda38640.c
@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Hardware monitoring driver for Infineon TDA38640
+ *
+ * Copyright (c) 2023 9elements GmbH
+ *
+ */
+
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/regulator/driver.h>
+#include "pmbus.h"
+
+static const struct regulator_desc __maybe_unused tda38640_reg_desc[] = {
+       PMBUS_REGULATOR("vout", 0),
+};
+
+static struct pmbus_driver_info tda38640_info = {
+       .pages = 1,
+       .format[PSC_VOLTAGE_IN] = linear,
+       .format[PSC_VOLTAGE_OUT] = linear,
+       .format[PSC_CURRENT_OUT] = linear,
+       .format[PSC_CURRENT_IN] = linear,
+       .format[PSC_POWER] = linear,
+       .format[PSC_TEMPERATURE] = linear,
+
+       .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT
+           | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP
+           | PMBUS_HAVE_IIN
+           | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+           | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT
+           | PMBUS_HAVE_POUT | PMBUS_HAVE_PIN,
+#if IS_ENABLED(CONFIG_SENSORS_TDA38640_REGULATOR)
+       .num_regulators = 1,
+       .reg_desc = tda38640_reg_desc,
+#endif
+};
+
+static int tda38640_probe(struct i2c_client *client)
+{
+       return pmbus_do_probe(client, &tda38640_info);
+}
+
+static const struct i2c_device_id tda38640_id[] = {
+       {"tda38640", 0},
+       {}
+};
+MODULE_DEVICE_TABLE(i2c, tda38640_id);
+
+static const struct of_device_id __maybe_unused tda38640_of_match[] = {
+       { .compatible = "infineon,tda38640"},
+       { },
+};
+MODULE_DEVICE_TABLE(of, tda38640_of_match);
+
+/* This is the driver that will be inserted */
+static struct i2c_driver tda38640_driver = {
+       .driver = {
+               .name = "tda38640",
+               .of_match_table = of_match_ptr(tda38640_of_match),
+       },
+       .probe_new = tda38640_probe,
+       .id_table = tda38640_id,
+};
+
+module_i2c_driver(tda38640_driver);
+
+MODULE_AUTHOR("Patrick Rudolph <patrick.rudolph@9elements.com>");
+MODULE_DESCRIPTION("PMBus driver for Infineon TDA38640");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(PMBUS);