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71 lines
1.7 KiB
71 lines
1.7 KiB
// 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_new = 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 <[email protected]>"); |
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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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