^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 Infineon Multi-phase Digital VR Controllers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 2020 Mellanox Technologies. All rights reserved.
^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 "pmbus.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define XDPE122_PROT_VR12_5MV 0x01 /* VR12.0 mode, 5-mV DAC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define XDPE122_PROT_VR12_5_10MV 0x02 /* VR12.5 mode, 10-mV DAC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define XDPE122_PROT_IMVP9_10MV 0x03 /* IMVP9 mode, 10-mV DAC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define XDPE122_AMD_625MV 0x10 /* AMD mode 6.25mV */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define XDPE122_PAGE_NUM 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) static int xdpe122_read_word_data(struct i2c_client *client, int page,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) int phase, int reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) long val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) s16 exponent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) s32 mantissa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) switch (reg) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) case PMBUS_VOUT_OV_FAULT_LIMIT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) case PMBUS_VOUT_UV_FAULT_LIMIT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) ret = pmbus_read_word_data(client, page, phase, reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) /* Convert register value to LINEAR11 data. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) exponent = ((s16)ret) >> 11;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) mantissa = ((s16)((ret & GENMASK(10, 0)) << 5)) >> 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) val = mantissa * 1000L;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) if (exponent >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) val <<= exponent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) val >>= -exponent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) /* Convert data to VID register. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) switch (info->vrm_version[page]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) case vr13:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) if (val >= 500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) return 1 + DIV_ROUND_CLOSEST(val - 500, 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) case vr12:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) if (val >= 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) return 1 + DIV_ROUND_CLOSEST(val - 250, 5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) case imvp9:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) if (val >= 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) return 1 + DIV_ROUND_CLOSEST(val - 200, 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) case amd625mv:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) if (val >= 200 && val <= 1550)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) return DIV_ROUND_CLOSEST((1550 - val) * 100,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 625);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) return -ENODATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) static int xdpe122_identify(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) struct pmbus_driver_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) u8 vout_params;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) int i, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) for (i = 0; i < XDPE122_PAGE_NUM; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) /* Read the register with VOUT scaling value.*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) ret = pmbus_read_byte_data(client, i, PMBUS_VOUT_MODE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) vout_params = ret & GENMASK(4, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) switch (vout_params) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) case XDPE122_PROT_VR12_5_10MV:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) info->vrm_version[i] = vr13;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) case XDPE122_PROT_VR12_5MV:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) info->vrm_version[i] = vr12;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) case XDPE122_PROT_IMVP9_10MV:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) info->vrm_version[i] = imvp9;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) case XDPE122_AMD_625MV:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) info->vrm_version[i] = amd625mv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) return 0;
^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) static struct pmbus_driver_info xdpe122_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) .pages = XDPE122_PAGE_NUM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) .format[PSC_VOLTAGE_IN] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) .format[PSC_VOLTAGE_OUT] = vid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) .format[PSC_TEMPERATURE] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) .format[PSC_CURRENT_IN] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) .format[PSC_CURRENT_OUT] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) .format[PSC_POWER] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) PMBUS_HAVE_IIN | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) PMBUS_HAVE_POUT | PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) .func[1] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) PMBUS_HAVE_IIN | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) PMBUS_HAVE_POUT | PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) .identify = xdpe122_identify,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) .read_word_data = xdpe122_read_word_data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) static int xdpe122_probe(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) struct pmbus_driver_info *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) info = devm_kmemdup(&client->dev, &xdpe122_info, sizeof(*info),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) if (!info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) return pmbus_do_probe(client, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) static const struct i2c_device_id xdpe122_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) {"xdpe12254", 0},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) {"xdpe12284", 0},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) MODULE_DEVICE_TABLE(i2c, xdpe122_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) static const struct of_device_id __maybe_unused xdpe122_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {.compatible = "infineon,xdpe12254"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) {.compatible = "infineon,xdpe12284"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) MODULE_DEVICE_TABLE(of, xdpe122_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) static struct i2c_driver xdpe122_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) .name = "xdpe12284",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) .of_match_table = of_match_ptr(xdpe122_of_match),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) .probe_new = xdpe122_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) .remove = pmbus_do_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) .id_table = xdpe122_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) module_i2c_driver(xdpe122_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) MODULE_AUTHOR("Vadim Pasternak <vadimp@mellanox.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) MODULE_DESCRIPTION("PMBus driver for Infineon XDPE122 family");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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