brintos

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1// SPDX-License-Identifier: GPL-2.0+2/*3 * Hardware monitoring driver for TEXAS TPS546D24 buck converter4 */5 6#include <linux/err.h>7#include <linux/i2c.h>8#include <linux/init.h>9#include <linux/kernel.h>10#include <linux/module.h>11#include <linux/pmbus.h>12#include "pmbus.h"13 14static struct pmbus_driver_info tps546d24_info = {15	.pages = 1,16	.format[PSC_VOLTAGE_IN] = linear,17	.format[PSC_VOLTAGE_OUT] = linear,18	.format[PSC_TEMPERATURE] = linear,19	.format[PSC_CURRENT_OUT] = linear,20	.func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN21			| PMBUS_HAVE_IOUT | PMBUS_HAVE_VOUT22			| PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_STATUS_VOUT23			| PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,24};25 26static int tps546d24_probe(struct i2c_client *client)27{28	int reg;29 30	reg = i2c_smbus_read_byte_data(client, PMBUS_VOUT_MODE);31	if (reg < 0)32		return reg;33 34	if (reg & 0x80) {35		int err;36 37		err = i2c_smbus_write_byte_data(client, PMBUS_VOUT_MODE, reg & 0x7f);38		if (err < 0)39			return err;40	}41	return pmbus_do_probe(client, &tps546d24_info);42}43 44static const struct i2c_device_id tps546d24_id[] = {45	{"tps546d24"},46	{}47};48MODULE_DEVICE_TABLE(i2c, tps546d24_id);49 50static const struct of_device_id __maybe_unused tps546d24_of_match[] = {51	{.compatible = "ti,tps546d24"},52	{}53};54MODULE_DEVICE_TABLE(of, tps546d24_of_match);55 56/* This is the driver that will be inserted */57static struct i2c_driver tps546d24_driver = {58	.driver = {59		   .name = "tps546d24",60		   .of_match_table = of_match_ptr(tps546d24_of_match),61	   },62	.probe = tps546d24_probe,63	.id_table = tps546d24_id,64};65 66module_i2c_driver(tps546d24_driver);67 68MODULE_AUTHOR("Duke Du <dukedu83@gmail.com>");69MODULE_DESCRIPTION("PMBus driver for TI tps546d24");70MODULE_LICENSE("GPL");71MODULE_IMPORT_NS(PMBUS);72