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7537862a90
Add the pmbus driver for the STMicroelectronics pm6764 voltage regulator. the output voltage use the MFR_READ_VOUT 0xD4 vout value returned is linear11 Signed-off-by: Charles Hsu <hsu.yungteng@gmail.com> [groeck: Fixed various compile errors; marked pm6764tr_of_match __maybe_unused] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
76 lines
1.8 KiB
C
76 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Hardware monitoring driver for STMicroelectronics digital controller PM6764TR
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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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#define PM6764TR_PMBUS_READ_VOUT 0xD4
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static int pm6764tr_read_word_data(struct i2c_client *client, int page, int phase, int reg)
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{
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int ret;
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switch (reg) {
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case PMBUS_VIRT_READ_VMON:
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ret = pmbus_read_word_data(client, page, phase, PM6764TR_PMBUS_READ_VOUT);
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break;
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default:
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ret = -ENODATA;
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break;
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}
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return ret;
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}
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static struct pmbus_driver_info pm6764tr_info = {
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.pages = 1,
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.format[PSC_VOLTAGE_IN] = linear,
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.format[PSC_VOLTAGE_OUT] = vid,
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.format[PSC_TEMPERATURE] = linear,
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.format[PSC_CURRENT_OUT] = linear,
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.format[PSC_POWER] = linear,
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.func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN | PMBUS_HAVE_PIN |
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PMBUS_HAVE_IOUT | PMBUS_HAVE_POUT | PMBUS_HAVE_VMON |
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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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.read_word_data = pm6764tr_read_word_data,
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};
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static int pm6764tr_probe(struct i2c_client *client)
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{
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return pmbus_do_probe(client, &pm6764tr_info);
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}
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static const struct i2c_device_id pm6764tr_id[] = {
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{"pm6764tr", 0},
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{}
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};
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MODULE_DEVICE_TABLE(i2c, pm6764tr_id);
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static const struct of_device_id __maybe_unused pm6764tr_of_match[] = {
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{.compatible = "st,pm6764tr"},
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{}
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};
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/* This is the driver that will be inserted */
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static struct i2c_driver pm6764tr_driver = {
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.driver = {
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.name = "pm6764tr",
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.of_match_table = of_match_ptr(pm6764tr_of_match),
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},
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.probe_new = pm6764tr_probe,
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.id_table = pm6764tr_id,
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};
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module_i2c_driver(pm6764tr_driver);
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MODULE_AUTHOR("Charles Hsu");
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MODULE_DESCRIPTION("PMBus driver for ST PM6764TR");
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MODULE_LICENSE("GPL");
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