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author | Tao Ren <rentao.bupt@gmail.com> | 2019-10-29 11:20:53 -0700 |
---|---|---|
committer | Guenter Roeck <linux@roeck-us.net> | 2019-11-06 14:37:19 -0800 |
commit | 626bb2f3fb3c4f1faa084d81112edda555bacb68 (patch) | |
tree | 1fda81acaa47ac7c5da5452e4ded93f3e285bfa2 /drivers | |
parent | 8ae93ea710d470c1cf1bf068013e6b264f021a19 (diff) | |
download | linux-626bb2f3fb3c4f1faa084d81112edda555bacb68.tar.gz linux-626bb2f3fb3c4f1faa084d81112edda555bacb68.tar.bz2 linux-626bb2f3fb3c4f1faa084d81112edda555bacb68.zip |
hwmon: (pmbus) add driver for BEL PFE1100 and PFE3000
Add "bel-pfe" pmbus driver to support hardware monitoring for BEL PFE1100
and PFE3000 power supplies.
Signed-off-by: Tao Ren <rentao.bupt@gmail.com>
Link: https://lore.kernel.org/r/20191029182054.32279-2-rentao.bupt@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/hwmon/pmbus/Kconfig | 9 | ||||
-rw-r--r-- | drivers/hwmon/pmbus/Makefile | 1 | ||||
-rw-r--r-- | drivers/hwmon/pmbus/bel-pfe.c | 131 |
3 files changed, 141 insertions, 0 deletions
diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig index d62d69bb7e49..59859979571d 100644 --- a/drivers/hwmon/pmbus/Kconfig +++ b/drivers/hwmon/pmbus/Kconfig @@ -36,6 +36,15 @@ config SENSORS_ADM1275 This driver can also be built as a module. If so, the module will be called adm1275. +config SENSORS_BEL_PFE + tristate "Bel PFE Compatible Power Supplies" + help + If you say yes here you get hardware monitoring support for BEL + PFE1100 and PFE3000 Power Supplies. + + This driver can also be built as a module. If so, the module will + be called bel-pfe. + config SENSORS_IBM_CFFPS tristate "IBM Common Form Factor Power Supply" depends on LEDS_CLASS diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile index 03bacfcfd660..3f8c1014938b 100644 --- a/drivers/hwmon/pmbus/Makefile +++ b/drivers/hwmon/pmbus/Makefile @@ -6,6 +6,7 @@ obj-$(CONFIG_PMBUS) += pmbus_core.o obj-$(CONFIG_SENSORS_PMBUS) += pmbus.o obj-$(CONFIG_SENSORS_ADM1275) += adm1275.o +obj-$(CONFIG_SENSORS_BEL_PFE) += bel-pfe.o obj-$(CONFIG_SENSORS_IBM_CFFPS) += ibm-cffps.o obj-$(CONFIG_SENSORS_INSPUR_IPSPS) += inspur-ipsps.o obj-$(CONFIG_SENSORS_IR35221) += ir35221.o diff --git a/drivers/hwmon/pmbus/bel-pfe.c b/drivers/hwmon/pmbus/bel-pfe.c new file mode 100644 index 000000000000..f236e18f45a5 --- /dev/null +++ b/drivers/hwmon/pmbus/bel-pfe.c @@ -0,0 +1,131 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Hardware monitoring driver for BEL PFE family power supplies. + * + * Copyright (c) 2019 Facebook Inc. + */ + +#include <linux/err.h> +#include <linux/i2c.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/pmbus.h> + +#include "pmbus.h" + +enum chips {pfe1100, pfe3000}; + +/* + * Disable status check for pfe3000 devices, because some devices report + * communication error (invalid command) for VOUT_MODE command (0x20) + * although correct VOUT_MODE (0x16) is returned: it leads to incorrect + * exponent in linear mode. + */ +static struct pmbus_platform_data pfe3000_plat_data = { + .flags = PMBUS_SKIP_STATUS_CHECK, +}; + +static struct pmbus_driver_info pfe_driver_info[] = { + [pfe1100] = { + .pages = 1, + .format[PSC_VOLTAGE_IN] = linear, + .format[PSC_VOLTAGE_OUT] = linear, + .format[PSC_CURRENT_IN] = linear, + .format[PSC_CURRENT_OUT] = linear, + .format[PSC_POWER] = linear, + .format[PSC_TEMPERATURE] = linear, + .format[PSC_FAN] = linear, + + .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | + PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | + PMBUS_HAVE_POUT | + PMBUS_HAVE_VIN | PMBUS_HAVE_IIN | + PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT | + PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 | + PMBUS_HAVE_STATUS_TEMP | + PMBUS_HAVE_FAN12, + }, + + [pfe3000] = { + .pages = 7, + .format[PSC_VOLTAGE_IN] = linear, + .format[PSC_VOLTAGE_OUT] = linear, + .format[PSC_CURRENT_IN] = linear, + .format[PSC_CURRENT_OUT] = linear, + .format[PSC_POWER] = linear, + .format[PSC_TEMPERATURE] = linear, + .format[PSC_FAN] = linear, + + /* Page 0: V1. */ + .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | + PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | + PMBUS_HAVE_POUT | PMBUS_HAVE_FAN12 | + PMBUS_HAVE_VIN | PMBUS_HAVE_IIN | + PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT | + PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 | + PMBUS_HAVE_TEMP3 | PMBUS_HAVE_STATUS_TEMP | + PMBUS_HAVE_VCAP, + + /* Page 1: Vsb. */ + .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | + PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | + PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT | + PMBUS_HAVE_POUT, + + /* + * Page 2: V1 Ishare. + * Page 3: Reserved. + * Page 4: V1 Cathode. + * Page 5: Vsb Cathode. + * Page 6: V1 Sense. + */ + .func[2] = PMBUS_HAVE_VOUT, + .func[4] = PMBUS_HAVE_VOUT, + .func[5] = PMBUS_HAVE_VOUT, + .func[6] = PMBUS_HAVE_VOUT, + }, +}; + +static int pfe_pmbus_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + int model; + + model = (int)id->driver_data; + + /* + * PFE3000-12-069RA devices may not stay in page 0 during device + * probe which leads to probe failure (read status word failed). + * So let's set the device to page 0 at the beginning. + */ + if (model == pfe3000) { + client->dev.platform_data = &pfe3000_plat_data; + i2c_smbus_write_byte_data(client, PMBUS_PAGE, 0); + } + + return pmbus_do_probe(client, id, &pfe_driver_info[model]); +} + +static const struct i2c_device_id pfe_device_id[] = { + {"pfe1100", pfe1100}, + {"pfe3000", pfe3000}, + {} +}; + +MODULE_DEVICE_TABLE(i2c, pfe_device_id); + +static struct i2c_driver pfe_pmbus_driver = { + .driver = { + .name = "bel-pfe", + }, + .probe = pfe_pmbus_probe, + .remove = pmbus_do_remove, + .id_table = pfe_device_id, +}; + +module_i2c_driver(pfe_pmbus_driver); + +MODULE_AUTHOR("Tao Ren <rentao.bupt@gmail.com>"); +MODULE_DESCRIPTION("PMBus driver for BEL PFE Family Power Supplies"); +MODULE_LICENSE("GPL"); |