The below lists of VOUT_MODE command readout with their related VID
protocols, Digital to Analog Converter steps, supported by the device:
VR12.0 mode, 5-mV DAC - 0x21
VR12.5 mode, 10-mV DAC - 0x22
VR13.0 mode, 10-mV DAC - 0x24
IMVP8 mode, 5-mV DAC - 0x25
VR13.0 mode, 5-mV DAC - 0x27
Signed-off-by: Vadim Pasternak <vadimp@xxxxxxxxxxxx>
---
drivers/hwmon/pmbus/Kconfig | 10 ++++
drivers/hwmon/pmbus/Makefile | 1 +
drivers/hwmon/pmbus/tps53679.c | 126 +++++++++++++++++++++++++++++++++++++++++
3 files changed, 137 insertions(+)
create mode 100644 drivers/hwmon/pmbus/tps53679.c
diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig
index 68d717a..42d2366 100644
--- a/drivers/hwmon/pmbus/Kconfig
+++ b/drivers/hwmon/pmbus/Kconfig
@@ -135,6 +135,16 @@ config SENSORS_TPS40422
This driver can also be built as a module. If so, the module will
be called tps40422.
+config SENSORS_TPS53679
+ tristate "TI TPS53679"
+ default n
+ help
+ If you say yes here you get hardware monitoring support for TI
+ TPS53679.
+
+ This driver can also be built as a module. If so, the module will
+ be called tps53679.
+
config SENSORS_UCD9000
tristate "TI UCD90120, UCD90124, UCD90160, UCD9090, UCD90910"
default n
diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile
index 75bb7ca..c7c76b0 100644
--- a/drivers/hwmon/pmbus/Makefile
+++ b/drivers/hwmon/pmbus/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_SENSORS_MAX20751) += max20751.o
obj-$(CONFIG_SENSORS_MAX34440) += max34440.o
obj-$(CONFIG_SENSORS_MAX8688) += max8688.o
obj-$(CONFIG_SENSORS_TPS40422) += tps40422.o
+obj-$(CONFIG_SENSORS_TPS53679) += tps53679.o
obj-$(CONFIG_SENSORS_UCD9000) += ucd9000.o
obj-$(CONFIG_SENSORS_UCD9200) += ucd9200.o
obj-$(CONFIG_SENSORS_ZL6100) += zl6100.o
diff --git a/drivers/hwmon/pmbus/tps53679.c b/drivers/hwmon/pmbus/tps53679.c
new file mode 100644
index 0000000..1cdd456
--- /dev/null
+++ b/drivers/hwmon/pmbus/tps53679.c
@@ -0,0 +1,126 @@
+/*
+ * Hardware monitoring driver for Texas Instruments TPS53679
+ *
+ * Copyright (c) 2017 Mellanox Technologies. All rights reserved.
+ * Copyright (c) 2017 Vadim Pasternak <vadimp@xxxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include "pmbus.h"
+
+#define TPS53679_PROT_VR12_5MV 0x01 /* VR12.0 mode, 5-mV DAC */
+#define TPS53679_PROT_VR12_5_10MV 0x02 /* VR12.5 mode, 10-mV DAC */
+#define TPS53679_PROT_VR13_10MV 0x04 /* VR13.0 mode, 10-mV DAC */
+#define TPS53679_PROT_IMVP8_5MV 0x05 /* IMVP8 mode, 5-mV DAC */
+#define TPS53679_PROT_VR13_5MV 0x07 /* VR13.0 mode, 5-mV DAC */
+#define TPS53679_PAGE_NUM 2
+
+struct tps53679_data {
+ u8 vout_params; /* VOUT parameters */
+ struct pmbus_driver_info info;
+};
+
+#define to_tps53679_data(x) container_of(x, struct tps53679_data, info)
+
+static int tps53679_identify(struct i2c_client *client,
+ struct pmbus_driver_info *info)
+{
+ struct tps53679_data *data = to_tps53679_data(info);
+ int ret;
+
+ /* Read the register with VOUT scaling value.*/
+ ret = pmbus_read_byte_data(client, 0, PMBUS_VOUT_MODE);
+ if (ret < 0)
+ return ret;
+
+ data->vout_params = ret & GENMASK(4, 0);
+
+ switch (data->vout_params) {
+ case TPS53679_PROT_VR13_10MV:
+ case TPS53679_PROT_VR12_5_10MV:
+ info->vrm_version = vr13;
+ break;
+ case TPS53679_PROT_VR13_5MV:
+ case TPS53679_PROT_VR12_5MV:
+ case TPS53679_PROT_IMVP8_5MV:
+ info->vrm_version = vr12;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static struct pmbus_driver_info tps53679_info = {
+ .pages = TPS53679_PAGE_NUM,
+ .format[PSC_VOLTAGE_IN] = linear,
+ .format[PSC_VOLTAGE_OUT] = vid,
+ .format[PSC_TEMPERATURE] = linear,
+ .format[PSC_CURRENT_OUT] = linear,
+ .format[PSC_POWER] = linear,
+ .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
+ PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
+ PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP |
+ PMBUS_HAVE_POUT,
+ .func[1] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
+ PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
+ PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP |
+ PMBUS_HAVE_POUT,
+ .identify = tps53679_identify,
+};
+
+static int tps53679_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct tps53679_data *data;
+
+ data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ return pmbus_do_probe(client, id, &tps53679_info);
+}
+
+static const struct i2c_device_id tps53679_id[] = {
+ {"tps53679", TPS53679_PAGE_NUM},
+ {}
+};
+
+MODULE_DEVICE_TABLE(i2c, tps53679_id);
+
+static const struct of_device_id tps53679_of_match[] = {
+ {.compatible = "ti,tps53679"},
+ {}
+};
+MODULE_DEVICE_TABLE(of, tps53679_of_match);
+
+static struct i2c_driver tps53679_driver = {
+ .driver = {
+ .name = "tps53679",
+ .of_match_table = of_match_ptr(tps53679_of_match),
+ },
+ .probe = tps53679_probe,
+ .remove = pmbus_do_remove,
+ .id_table = tps53679_id,
+};
+
+module_i2c_driver(tps53679_driver);
+
+MODULE_AUTHOR("Vadim Pasternak <vadimp@xxxxxxxxxxxx>");
+MODULE_DESCRIPTION("PMBus driver for Texas Instruments TPS53679");
+MODULE_LICENSE("GPL");
--
2.1.4
--
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