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 <[email protected]> --- v1->v2 Comments pointed out by Guenter: - arrange includes in alphabetic order; - remove tps53679_data, since it's used only in tps53679_identify; - drop redundant comment; - drop id field in tps53679_id; --- drivers/hwmon/pmbus/Kconfig | 10 ++++ drivers/hwmon/pmbus/Makefile | 1 + drivers/hwmon/pmbus/tps53679.c | 113 +++++++++++++++++++++++++++++++++++++++++ 3 files changed, 124 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..85b515c --- /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 <[email protected]> + * + * 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 <[email protected]>"); +MODULE_DESCRIPTION("PMBus driver for Texas Instruments TPS53679"); +MODULE_LICENSE("GPL"); -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-hwmon" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
