72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Hardware monitoring driver for TEXAS TPS546D24 buck converter
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*/
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#include <linux/err.h>
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#include <linux/i2c.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/pmbus.h>
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#include "pmbus.h"
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static struct pmbus_driver_info tps546d24_info = {
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.pages = 1,
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.format[PSC_VOLTAGE_IN] = linear,
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.format[PSC_VOLTAGE_OUT] = linear,
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.format[PSC_TEMPERATURE] = linear,
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.format[PSC_CURRENT_OUT] = linear,
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.func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN
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| PMBUS_HAVE_IOUT | PMBUS_HAVE_VOUT
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| PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_STATUS_VOUT
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| PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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};
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static int tps546d24_probe(struct i2c_client *client)
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{
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int reg;
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reg = i2c_smbus_read_byte_data(client, PMBUS_VOUT_MODE);
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if (reg < 0)
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return reg;
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if (reg & 0x80) {
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int err;
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err = i2c_smbus_write_byte_data(client, PMBUS_VOUT_MODE, reg & 0x7f);
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if (err < 0)
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return err;
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}
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return pmbus_do_probe(client, &tps546d24_info);
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}
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static const struct i2c_device_id tps546d24_id[] = {
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{"tps546d24", 0},
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{}
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};
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MODULE_DEVICE_TABLE(i2c, tps546d24_id);
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static const struct of_device_id __maybe_unused tps546d24_of_match[] = {
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{.compatible = "ti,tps546d24"},
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{}
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};
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MODULE_DEVICE_TABLE(of, tps546d24_of_match);
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/* This is the driver that will be inserted */
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static struct i2c_driver tps546d24_driver = {
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.driver = {
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.name = "tps546d24",
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.of_match_table = of_match_ptr(tps546d24_of_match),
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},
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.probe = tps546d24_probe,
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.id_table = tps546d24_id,
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};
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module_i2c_driver(tps546d24_driver);
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MODULE_AUTHOR("Duke Du <dukedu83@gmail.com>");
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MODULE_DESCRIPTION("PMBus driver for TI tps546d24");
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MODULE_LICENSE("GPL");
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MODULE_IMPORT_NS(PMBUS);
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