Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Hardware monitoring driver for Infineon IR38064
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Copyright (c) 2017 Google Inc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * VOUT_MODE is not supported by the device. The driver fakes VOUT linear16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  * mode with exponent value -8 as direct mode with m=256/b=0/R=0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  *          
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  * The device supports VOUT_PEAK, IOUT_PEAK, and TEMPERATURE_PEAK, however
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)  * this driver does not currently support them.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include "pmbus.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) static struct pmbus_driver_info ir38064_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	.pages = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	.format[PSC_VOLTAGE_IN] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	.format[PSC_VOLTAGE_OUT] = direct,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	.format[PSC_CURRENT_OUT] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	.format[PSC_POWER] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	.format[PSC_TEMPERATURE] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	.m[PSC_VOLTAGE_OUT] = 256,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	.b[PSC_VOLTAGE_OUT] = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	.R[PSC_VOLTAGE_OUT] = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	.func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	    | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	    | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	    | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	    | PMBUS_HAVE_POUT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static int ir38064_probe(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	return pmbus_do_probe(client, &ir38064_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) static const struct i2c_device_id ir38064_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	{"ir38064", 0},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	{}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) MODULE_DEVICE_TABLE(i2c, ir38064_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) /* This is the driver that will be inserted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) static struct i2c_driver ir38064_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 		   .name = "ir38064",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 		   },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	.probe_new = ir38064_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	.remove = pmbus_do_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 	.id_table = ir38064_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) module_i2c_driver(ir38064_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) MODULE_AUTHOR("Maxim Sloyko <maxims@google.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) MODULE_DESCRIPTION("PMBus driver for Infineon IR38064");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) MODULE_LICENSE("GPL");