^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 BEL PFE family power supplies.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 2019 Facebook Inc.
^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/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/i2c.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/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/pmbus.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include "pmbus.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) enum chips {pfe1100, pfe3000};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * Disable status check for pfe3000 devices, because some devices report
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * communication error (invalid command) for VOUT_MODE command (0x20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * although correct VOUT_MODE (0x16) is returned: it leads to incorrect
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * exponent in linear mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) static struct pmbus_platform_data pfe3000_plat_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) .flags = PMBUS_SKIP_STATUS_CHECK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static struct pmbus_driver_info pfe_driver_info[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) [pfe1100] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) .pages = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) .format[PSC_VOLTAGE_IN] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) .format[PSC_VOLTAGE_OUT] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) .format[PSC_CURRENT_IN] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) .format[PSC_CURRENT_OUT] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) .format[PSC_POWER] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) .format[PSC_TEMPERATURE] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) .format[PSC_FAN] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) PMBUS_HAVE_POUT |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) PMBUS_HAVE_VIN | PMBUS_HAVE_IIN |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) PMBUS_HAVE_STATUS_TEMP |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) PMBUS_HAVE_FAN12,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) [pfe3000] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) .pages = 7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) .format[PSC_VOLTAGE_IN] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) .format[PSC_VOLTAGE_OUT] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) .format[PSC_CURRENT_IN] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) .format[PSC_CURRENT_OUT] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) .format[PSC_POWER] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) .format[PSC_TEMPERATURE] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) .format[PSC_FAN] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) /* Page 0: V1. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) PMBUS_HAVE_POUT | PMBUS_HAVE_FAN12 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) PMBUS_HAVE_VIN | PMBUS_HAVE_IIN |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) PMBUS_HAVE_TEMP3 | PMBUS_HAVE_STATUS_TEMP |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) PMBUS_HAVE_VCAP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) /* Page 1: Vsb. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) PMBUS_HAVE_POUT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) * Page 2: V1 Ishare.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * Page 3: Reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * Page 4: V1 Cathode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) * Page 5: Vsb Cathode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * Page 6: V1 Sense.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) .func[2] = PMBUS_HAVE_VOUT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) .func[4] = PMBUS_HAVE_VOUT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) .func[5] = PMBUS_HAVE_VOUT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) .func[6] = PMBUS_HAVE_VOUT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) static const struct i2c_device_id pfe_device_id[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) static int pfe_pmbus_probe(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) int model;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) model = (int)i2c_match_id(pfe_device_id, client)->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * PFE3000-12-069RA devices may not stay in page 0 during device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * probe which leads to probe failure (read status word failed).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * So let's set the device to page 0 at the beginning.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) if (model == pfe3000) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) client->dev.platform_data = &pfe3000_plat_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) i2c_smbus_write_byte_data(client, PMBUS_PAGE, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) return pmbus_do_probe(client, &pfe_driver_info[model]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) static const struct i2c_device_id pfe_device_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) {"pfe1100", pfe1100},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) {"pfe3000", pfe3000},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) MODULE_DEVICE_TABLE(i2c, pfe_device_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) static struct i2c_driver pfe_pmbus_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) .name = "bel-pfe",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) .probe_new = pfe_pmbus_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) .remove = pmbus_do_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) .id_table = pfe_device_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) module_i2c_driver(pfe_pmbus_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) MODULE_AUTHOR("Tao Ren <rentao.bupt@gmail.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) MODULE_DESCRIPTION("PMBus driver for BEL PFE Family Power Supplies");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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