[PATCH v3 1/2] dt-bindings: trivial-devices: Add Infineon TDA38640 Voltage Regulator

[PATCH v3 1/2] dt-bindings: trivial-devices: Add Infineon TDA38640 Voltage Regulator

[Naresh Solanki]

Infineon TDA38640 is PMBUS compliant voltage regulator.

Signed-off-by: Naresh Solanki <Naresh.Solanki@9elements.com>
---
 Documentation/devicetree/bindings/trivial-devices.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/trivial-devices.yaml b/Documentation/devicetree/bindings/trivial-devices.yaml
index f5c0a6283e61..a28b02036489 100644
--- a/Documentation/devicetree/bindings/trivial-devices.yaml
+++ b/Documentation/devicetree/bindings/trivial-devices.yaml
@@ -141,6 +141,8 @@ properties:
           - infineon,slb9645tt
             # Infineon SLB9673 I2C TPM 2.0
           - infineon,slb9673
+            # Infineon TDA38640 Voltage Regulator
+          - infineon,tda38640
             # Infineon TLV493D-A1B6 I2C 3D Magnetic Sensor
           - infineon,tlv493d-a1b6
             # Infineon Multi-phase Digital VR Controller xdpe11280

base-commit: 4d891f76a30d3be4194a805c5e4277786140ef05
-- 
2.38.1

[PATCH v3 2/2] hwmon: (pmbus/tda38640) Add driver for Infineon TDA38640 Voltage Regulator

[Naresh Solanki]

From: Patrick Rudolph <patrick.rudolph@9elements.com>

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>
---
 drivers/hwmon/pmbus/Kconfig    | 16 ++++++++
 drivers/hwmon/pmbus/Makefile   |  1 +
 drivers/hwmon/pmbus/tda38640.c | 73 ++++++++++++++++++++++++++++++++++
 3 files changed, 90 insertions(+)
 create mode 100644 drivers/hwmon/pmbus/tda38640.c

diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig
index 30448e049486..9f4bbb9c487a 100644
--- 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 d9d2fa4bd6f7..3ae019916267 100644
--- 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
index 000000000000..6099a3cc568e
--- /dev/null
+++ b/drivers/hwmon/pmbus/tda38640.c
@@ -0,0 +1,73 @@
+// 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",
+		   },
+	.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);
-- 
2.38.1

Re: [PATCH v3 2/2] hwmon: (pmbus/tda38640) Add driver for Infineon TDA38640 Voltage Regulator

[Krzysztof Kozlowski]

On 24/01/2023 15:48, Naresh Solanki wrote:
> From: Patrick Rudolph <patrick.rudolph@9elements.com>
> 
> 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>
> ---

(...)

> +
> +#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);

No improvements here. Do not send new version without solving the
feedback (or finishing the discussion). Its usage is still missing in
your i2c_driver.

Best regards,
Krzysztof

Re: [PATCH v3 2/2] hwmon: (pmbus/tda38640) Add driver for Infineon TDA38640 Voltage Regulator

[Naresh Solanki]

On 24-01-2023 08:39 pm, Krzysztof Kozlowski wrote:
> On 24/01/2023 15:48, Naresh Solanki wrote:
>> From: Patrick Rudolph <patrick.rudolph@9elements.com>
>>
>> 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>
>> ---
> 
> (...)
> 
>> +
>> +#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);
> 
> No improvements here. Do not send new version without solving the
> feedback (or finishing the discussion). Its usage is still missing in
> your i2c_driver.
I realized I missed reference to tda38640_of_match below.

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,
};

Will fix that.
> 
> Best regards,
> Krzysztof
> 
Thanks,
Naresh

Re: [PATCH v3 2/2] hwmon: (pmbus/tda38640) Add driver for Infineon TDA38640 Voltage Regulator

[Guenter Roeck]

On Tue, Jan 24, 2023 at 08:44:18PM +0530, Naresh Solanki wrote:
> 
> 
> On 24-01-2023 08:39 pm, Krzysztof Kozlowski wrote:
> > On 24/01/2023 15:48, Naresh Solanki wrote:
> > > From: Patrick Rudolph <patrick.rudolph@9elements.com>
> > > 
> > > 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>
> > > ---
> > 
> > (...)
> > 
> > > +
> > > +#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);
> > 
> > No improvements here. Do not send new version without solving the
> > feedback (or finishing the discussion). Its usage is still missing in
> > your i2c_driver.
> I realized I missed reference to tda38640_of_match below.
> 
> static struct i2c_driver tda38640_driver = {
>         .driver = {
>                    .name = "tda38640",
>                    .of_match_table = of_match_ptr(tda38640_of_match),
>                    },

Column alignment also looks off. I would expect tabs only, like

	.driver = {
		.name = "tda38640",
		.of_match_table = of_match_ptr(tda38640_of_match),
	},

Guenter

>         .probe_new = tda38640_probe,
>         .id_table = tda38640_id,
> };
> 
> Will fix that.
> > 
> > Best regards,
> > Krzysztof
> > 
> Thanks,
> Naresh