// SPDX-License-Identifier: GPL-2.0+ /* * Hardware monitoring driver for STMicroelectronics digital controller PM6764TR */ #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" #define PM6764TR_PMBUS_READ_VOUT 0xD4 static int pm6764tr_read_word_data(struct i2c_client *client, int page, int phase, int reg) { int ret; switch (reg) { case PMBUS_VIRT_READ_VMON: ret = pmbus_read_word_data(client, page, phase, PM6764TR_PMBUS_READ_VOUT); break; default: ret = -ENODATA; break; } return ret; } static struct pmbus_driver_info pm6764tr_info = { .pages = 1, .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_IIN | PMBUS_HAVE_PIN | PMBUS_HAVE_IOUT | PMBUS_HAVE_POUT | PMBUS_HAVE_VMON | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, .read_word_data = pm6764tr_read_word_data, }; static int pm6764tr_probe(struct i2c_client *client) { return pmbus_do_probe(client, &pm6764tr_info); } static const struct i2c_device_id pm6764tr_id[] = { {"pm6764tr", 0}, {} }; MODULE_DEVICE_TABLE(i2c, pm6764tr_id); static const struct of_device_id __maybe_unused pm6764tr_of_match[] = { {.compatible = "st,pm6764tr"}, {} }; /* This is the driver that will be inserted */ static struct i2c_driver pm6764tr_driver = { .driver = { .name = "pm6764tr", .of_match_table = of_match_ptr(pm6764tr_of_match), }, .probe_new = pm6764tr_probe, .id_table = pm6764tr_id, }; module_i2c_driver(pm6764tr_driver); MODULE_AUTHOR("Charles Hsu"); MODULE_DESCRIPTION("PMBus driver for ST PM6764TR"); MODULE_LICENSE("GPL"); MODULE_IMPORT_NS(PMBUS);