^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 PXE1610
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "pmbus.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define PXE1610_NUM_PAGES 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) /* Identify chip parameters. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) static int pxe1610_identify(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) struct pmbus_driver_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) for (i = 0; i < PXE1610_NUM_PAGES; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) if (pmbus_check_byte_register(client, i, PMBUS_VOUT_MODE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) u8 vout_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) /* Read the register with VOUT scaling value.*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) ret = pmbus_read_byte_data(client, i, PMBUS_VOUT_MODE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) vout_mode = ret & GENMASK(4, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) switch (vout_mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) info->vrm_version[i] = vr12;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) info->vrm_version[i] = vr13;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * If prior pages are available limit operation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * to them
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) if (i != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) info->pages = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) static struct pmbus_driver_info pxe1610_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) .pages = PXE1610_NUM_PAGES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) .format[PSC_VOLTAGE_IN] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) .format[PSC_VOLTAGE_OUT] = vid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) .format[PSC_CURRENT_IN] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) .format[PSC_CURRENT_OUT] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) .format[PSC_TEMPERATURE] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) .format[PSC_POWER] = linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) .func[0] = PMBUS_HAVE_VIN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) | PMBUS_HAVE_VOUT | PMBUS_HAVE_IIN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) | PMBUS_HAVE_IOUT | PMBUS_HAVE_PIN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) | PMBUS_HAVE_POUT | PMBUS_HAVE_TEMP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) | PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_STATUS_TEMP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) .func[1] = PMBUS_HAVE_VIN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) | PMBUS_HAVE_VOUT | PMBUS_HAVE_IIN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) | PMBUS_HAVE_IOUT | PMBUS_HAVE_PIN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) | PMBUS_HAVE_POUT | PMBUS_HAVE_TEMP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) | PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_STATUS_TEMP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) .func[2] = PMBUS_HAVE_VIN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) | PMBUS_HAVE_VOUT | PMBUS_HAVE_IIN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) | PMBUS_HAVE_IOUT | PMBUS_HAVE_PIN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) | PMBUS_HAVE_POUT | PMBUS_HAVE_TEMP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) | PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_STATUS_TEMP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) .identify = pxe1610_identify,
^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 int pxe1610_probe(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) struct pmbus_driver_info *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) u8 buf[I2C_SMBUS_BLOCK_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) if (!i2c_check_functionality(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) client->adapter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) I2C_FUNC_SMBUS_READ_BYTE_DATA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) | I2C_FUNC_SMBUS_READ_WORD_DATA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) | I2C_FUNC_SMBUS_READ_BLOCK_DATA))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * By default this device doesn't boot to page 0, so set page 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) * to access all pmbus registers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) i2c_smbus_write_byte_data(client, PMBUS_PAGE, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) /* Read Manufacturer id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) ret = i2c_smbus_read_block_data(client, PMBUS_MFR_ID, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) dev_err(&client->dev, "Failed to read PMBUS_MFR_ID\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) if (ret != 2 || strncmp(buf, "XP", 2)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) dev_err(&client->dev, "MFR_ID unrecognized\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) info = devm_kmemdup(&client->dev, &pxe1610_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) sizeof(struct pmbus_driver_info),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) if (!info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) return pmbus_do_probe(client, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) static const struct i2c_device_id pxe1610_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) {"pxe1610", 0},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) {"pxe1110", 0},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) {"pxm1310", 0},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) MODULE_DEVICE_TABLE(i2c, pxe1610_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) static struct i2c_driver pxe1610_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) .name = "pxe1610",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) .probe_new = pxe1610_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) .remove = pmbus_do_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) .id_table = pxe1610_id,
^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) module_i2c_driver(pxe1610_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) MODULE_AUTHOR("Vijay Khemka <vijaykhemka@fb.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) MODULE_DESCRIPTION("PMBus driver for Infineon PXE1610, PXE1110 and PXM1310");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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