diff options
author | Vadim Pasternak <vadimp@mellanox.com> | 2017-08-30 22:02:14 +0000 |
---|---|---|
committer | Guenter Roeck <linux@roeck-us.net> | 2017-08-30 18:01:08 -0700 |
commit | 610526527a13e4c91e64ec3dfb4626c5043291c9 (patch) | |
tree | d1065398f7ee8cef8616301b6359676ca571961b /drivers/hwmon | |
parent | 4e6fe29fb80b731b3971d335e810b27ba9ec8357 (diff) | |
download | linux-610526527a13e4c91e64ec3dfb4626c5043291c9.tar.bz2 |
hwmon: (pmbus) Add support for Texas Instruments tps53679 device
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@mellanox.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon')
-rw-r--r-- | drivers/hwmon/pmbus/Kconfig | 9 | ||||
-rw-r--r-- | drivers/hwmon/pmbus/Makefile | 1 | ||||
-rw-r--r-- | drivers/hwmon/pmbus/tps53679.c | 113 |
3 files changed, 123 insertions, 0 deletions
diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig index 522ac37d8a69..40019325b517 100644 --- a/drivers/hwmon/pmbus/Kconfig +++ b/drivers/hwmon/pmbus/Kconfig @@ -144,6 +144,15 @@ 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" + 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 737fa4efb3cc..459a6be3390e 100644 --- a/drivers/hwmon/pmbus/Makefile +++ b/drivers/hwmon/pmbus/Makefile @@ -15,6 +15,7 @@ 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 000000000000..85b515cd9df0 --- /dev/null +++ b/drivers/hwmon/pmbus/tps53679.c @@ -0,0 +1,113 @@ +/* + * Hardware monitoring driver for Texas Instruments TPS53679 + * + * Copyright (c) 2017 Mellanox Technologies. All rights reserved. + * Copyright (c) 2017 Vadim Pasternak <vadimp@mellanox.com> + * + * 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/err.h> +#include <linux/i2c.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/module.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 + +static int tps53679_identify(struct i2c_client *client, + struct pmbus_driver_info *info) +{ + u8 vout_params; + int ret; + + /* Read the register with VOUT scaling value.*/ + ret = pmbus_read_byte_data(client, 0, PMBUS_VOUT_MODE); + if (ret < 0) + return ret; + + vout_params = ret & GENMASK(4, 0); + + switch (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) +{ + return pmbus_do_probe(client, id, &tps53679_info); +} + +static const struct i2c_device_id tps53679_id[] = { + {"tps53679", 0}, + {} +}; + +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@mellanox.com>"); +MODULE_DESCRIPTION("PMBus driver for Texas Instruments TPS53679"); +MODULE_LICENSE("GPL"); |