^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Hardware monitoring driver for Maxim MAX16064
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 2011 Ericsson AB.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include "pmbus.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define MAX16064_MFR_VOUT_PEAK 0xd4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define MAX16064_MFR_TEMPERATURE_PEAK 0xd6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) static int max16064_read_word_data(struct i2c_client *client, int page,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) int phase, int reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) switch (reg) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) case PMBUS_VIRT_READ_VOUT_MAX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) ret = pmbus_read_word_data(client, page, phase,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) MAX16064_MFR_VOUT_PEAK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) case PMBUS_VIRT_READ_TEMP_MAX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) ret = pmbus_read_word_data(client, page, phase,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) MAX16064_MFR_TEMPERATURE_PEAK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) case PMBUS_VIRT_RESET_VOUT_HISTORY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) case PMBUS_VIRT_RESET_TEMP_HISTORY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) ret = -ENODATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) return ret;
^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 int max16064_write_word_data(struct i2c_client *client, int page,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) int reg, u16 word)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) switch (reg) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) case PMBUS_VIRT_RESET_VOUT_HISTORY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) ret = pmbus_write_word_data(client, page,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) MAX16064_MFR_VOUT_PEAK, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) case PMBUS_VIRT_RESET_TEMP_HISTORY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) ret = pmbus_write_word_data(client, page,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) MAX16064_MFR_TEMPERATURE_PEAK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 0xffff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) ret = -ENODATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static struct pmbus_driver_info max16064_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) .pages = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) .format[PSC_VOLTAGE_IN] = direct,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) .format[PSC_VOLTAGE_OUT] = direct,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) .format[PSC_TEMPERATURE] = direct,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) .m[PSC_VOLTAGE_IN] = 19995,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) .b[PSC_VOLTAGE_IN] = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) .R[PSC_VOLTAGE_IN] = -1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) .m[PSC_VOLTAGE_OUT] = 19995,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) .b[PSC_VOLTAGE_OUT] = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) .R[PSC_VOLTAGE_OUT] = -1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) .m[PSC_TEMPERATURE] = -7612,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) .b[PSC_TEMPERATURE] = 335,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) .R[PSC_TEMPERATURE] = -3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_TEMP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_TEMP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) .read_word_data = max16064_read_word_data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) .write_word_data = max16064_write_word_data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) static int max16064_probe(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) return pmbus_do_probe(client, &max16064_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) static const struct i2c_device_id max16064_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) {"max16064", 0},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) MODULE_DEVICE_TABLE(i2c, max16064_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) /* This is the driver that will be inserted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) static struct i2c_driver max16064_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) .name = "max16064",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) .probe_new = max16064_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) .remove = pmbus_do_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) .id_table = max16064_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) module_i2c_driver(max16064_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) MODULE_AUTHOR("Guenter Roeck");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) MODULE_DESCRIPTION("PMBus driver for Maxim MAX16064");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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