From 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 12:05:51 +0200 Subject: Adding upstream version 5.10.209. Signed-off-by: Daniel Baumann --- drivers/hwmon/pmbus/bel-pfe.c | 132 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 132 insertions(+) create mode 100644 drivers/hwmon/pmbus/bel-pfe.c (limited to 'drivers/hwmon/pmbus/bel-pfe.c') diff --git a/drivers/hwmon/pmbus/bel-pfe.c b/drivers/hwmon/pmbus/bel-pfe.c new file mode 100644 index 000000000..fc3d9a915 --- /dev/null +++ b/drivers/hwmon/pmbus/bel-pfe.c @@ -0,0 +1,132 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Hardware monitoring driver for BEL PFE family power supplies. + * + * Copyright (c) 2019 Facebook Inc. + */ + +#include +#include +#include +#include +#include +#include + +#include "pmbus.h" + +enum chips {pfe1100, pfe3000}; + +/* + * Disable status check because some devices report communication error + * (invalid command) for VOUT_MODE command (0x20) although the correct + * VOUT_MODE (0x16) is returned: it leads to incorrect exponent in linear + * mode. + * This affects both pfe3000 and pfe1100. + */ +static struct pmbus_platform_data pfe_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 const struct i2c_device_id pfe_device_id[]; + +static int pfe_pmbus_probe(struct i2c_client *client) +{ + int model; + + model = (int)i2c_match_id(pfe_device_id, client)->driver_data; + client->dev.platform_data = &pfe_plat_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) + i2c_smbus_write_byte_data(client, PMBUS_PAGE, 0); + + return pmbus_do_probe(client, &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_new = pfe_pmbus_probe, + .remove = pmbus_do_remove, + .id_table = pfe_device_id, +}; + +module_i2c_driver(pfe_pmbus_driver); + +MODULE_AUTHOR("Tao Ren "); +MODULE_DESCRIPTION("PMBus driver for BEL PFE Family Power Supplies"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3