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d8a66f3621
These drivers don't use the driver_data member of struct i2c_device_id, so don't explicitly initialize this member. This prepares putting driver_data in an anonymous union which requires either no initialization or named designators. But it's also a nice cleanup on its own. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Link: https://lore.kernel.org/r/20240430085654.1028864-2-u.kleine-koenig@pengutronix.de Signed-off-by: Guenter Roeck <linux@roeck-us.net>
91 lines
2.1 KiB
C
91 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Driver for MPS MPQ8785 Step-Down Converter
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*/
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include "pmbus.h"
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static int mpq8785_identify(struct i2c_client *client,
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struct pmbus_driver_info *info)
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{
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int vout_mode;
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vout_mode = pmbus_read_byte_data(client, 0, PMBUS_VOUT_MODE);
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if (vout_mode < 0 || vout_mode == 0xff)
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return vout_mode < 0 ? vout_mode : -ENODEV;
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switch (vout_mode >> 5) {
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case 0:
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info->format[PSC_VOLTAGE_OUT] = linear;
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break;
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case 1:
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case 2:
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info->format[PSC_VOLTAGE_OUT] = direct,
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info->m[PSC_VOLTAGE_OUT] = 64;
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info->b[PSC_VOLTAGE_OUT] = 0;
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info->R[PSC_VOLTAGE_OUT] = 1;
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break;
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default:
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return -ENODEV;
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}
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return 0;
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};
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static struct pmbus_driver_info mpq8785_info = {
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.pages = 1,
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.format[PSC_VOLTAGE_IN] = direct,
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.format[PSC_CURRENT_OUT] = direct,
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.format[PSC_TEMPERATURE] = direct,
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.m[PSC_VOLTAGE_IN] = 4,
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.b[PSC_VOLTAGE_IN] = 0,
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.R[PSC_VOLTAGE_IN] = 1,
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.m[PSC_CURRENT_OUT] = 16,
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.b[PSC_CURRENT_OUT] = 0,
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.R[PSC_CURRENT_OUT] = 0,
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.m[PSC_TEMPERATURE] = 1,
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.b[PSC_TEMPERATURE] = 0,
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.R[PSC_TEMPERATURE] = 0,
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.func[0] =
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PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT |
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PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
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PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
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PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.identify = mpq8785_identify,
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};
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static int mpq8785_probe(struct i2c_client *client)
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{
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return pmbus_do_probe(client, &mpq8785_info);
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};
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static const struct i2c_device_id mpq8785_id[] = {
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{ "mpq8785" },
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{ },
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};
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MODULE_DEVICE_TABLE(i2c, mpq8785_id);
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static const struct of_device_id __maybe_unused mpq8785_of_match[] = {
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{ .compatible = "mps,mpq8785" },
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{}
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};
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MODULE_DEVICE_TABLE(of, mpq8785_of_match);
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static struct i2c_driver mpq8785_driver = {
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.driver = {
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.name = "mpq8785",
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.of_match_table = of_match_ptr(mpq8785_of_match),
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},
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.probe = mpq8785_probe,
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.id_table = mpq8785_id,
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};
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module_i2c_driver(mpq8785_driver);
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MODULE_AUTHOR("Charles Hsu <ythsu0511@gmail.com>");
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MODULE_DESCRIPTION("PMBus driver for MPS MPQ8785");
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MODULE_LICENSE("GPL");
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MODULE_IMPORT_NS(PMBUS);
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