projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 00669d19 MS |
1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | /* | |
| 3 | * Hardware monitoring driver for Infineon IR38064 | |
| 4 | * | |
| 5 | * Copyright (c) 2017 Google Inc | |
| 6 | * | |
| 7 | * VOUT_MODE is not supported by the device. The driver fakes VOUT linear16 | |
| 8 | * mode with exponent value -8 as direct mode with m=256/b=0/R=0. | |
| 39f03438 | 9 | * |
| 00669d19 MS |
10 | * The device supports VOUT_PEAK, IOUT_PEAK, and TEMPERATURE_PEAK, however |
| 11 | * this driver does not currently support them. | |
| 12 | */ | |
| 13 | ||
| 14 | #include <linux/err.h> | |
| 15 | #include <linux/i2c.h> | |
| 16 | #include <linux/init.h> | |
| 17 | #include <linux/kernel.h> | |
| 18 | #include <linux/module.h> | |
| 39f03438 | 19 | #include <linux/of.h> |
| 0ee7f624 | 20 | #include <linux/regulator/driver.h> |
| 00669d19 MS |
21 | #include "pmbus.h" |
| 22 | ||
| 0ee7f624 PR |
23 | #if IS_ENABLED(CONFIG_SENSORS_IR38064_REGULATOR) |
| 24 | static const struct regulator_desc ir38064_reg_desc[] = { | |
| cb722299 | 25 | PMBUS_REGULATOR_ONE("vout"), |
| 0ee7f624 PR |
26 | }; |
| 27 | #endif /* CONFIG_SENSORS_IR38064_REGULATOR */ | |
| 28 | ||
| 00669d19 MS |
29 | static struct pmbus_driver_info ir38064_info = { |
| 30 | .pages = 1, | |
| 31 | .format[PSC_VOLTAGE_IN] = linear, | |
| 32 | .format[PSC_VOLTAGE_OUT] = direct, | |
| 33 | .format[PSC_CURRENT_OUT] = linear, | |
| 34 | .format[PSC_POWER] = linear, | |
| 35 | .format[PSC_TEMPERATURE] = linear, | |
| 36 | .m[PSC_VOLTAGE_OUT] = 256, | |
| 37 | .b[PSC_VOLTAGE_OUT] = 0, | |
| 38 | .R[PSC_VOLTAGE_OUT] = 0, | |
| 39 | .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT | |
| 40 | | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP | |
| 41 | | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | |
| 42 | | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | |
| 43 | | PMBUS_HAVE_POUT, | |
| 0ee7f624 PR |
44 | #if IS_ENABLED(CONFIG_SENSORS_IR38064_REGULATOR) |
| 45 | .num_regulators = 1, | |
| 46 | .reg_desc = ir38064_reg_desc, | |
| 47 | #endif | |
| 00669d19 MS |
48 | }; |
| 49 | ||
| dd431939 | 50 | static int ir38064_probe(struct i2c_client *client) |
| 00669d19 | 51 | { |
| dd431939 | 52 | return pmbus_do_probe(client, &ir38064_info); |
| 00669d19 MS |
53 | } |
| 54 | ||
| 55 | static const struct i2c_device_id ir38064_id[] = { | |
| d8a66f36 UKK |
56 | {"ir38060"}, |
| 57 | {"ir38064"}, | |
| 58 | {"ir38164"}, | |
| 59 | {"ir38263"}, | |
| 00669d19 MS |
60 | {} |
| 61 | }; | |
| 62 | ||
| 63 | MODULE_DEVICE_TABLE(i2c, ir38064_id); | |
| 64 | ||
| f1e75e0d | 65 | static const struct of_device_id __maybe_unused ir38064_of_match[] = { |
| e65de225 AH |
66 | { .compatible = "infineon,ir38060" }, |
| 67 | { .compatible = "infineon,ir38064" }, | |
| 68 | { .compatible = "infineon,ir38164" }, | |
| 69 | { .compatible = "infineon,ir38263" }, | |
| 70 | {} | |
| 71 | }; | |
| 72 | ||
| 73 | MODULE_DEVICE_TABLE(of, ir38064_of_match); | |
| 74 | ||
| 00669d19 MS |
75 | /* This is the driver that will be inserted */ |
| 76 | static struct i2c_driver ir38064_driver = { | |
| 77 | .driver = { | |
| 78 | .name = "ir38064", | |
| e65de225 | 79 | .of_match_table = of_match_ptr(ir38064_of_match), |
| 00669d19 | 80 | }, |
| 1975d167 | 81 | .probe = ir38064_probe, |
| 00669d19 MS |
82 | .id_table = ir38064_id, |
| 83 | }; | |
| 84 | ||
| 85 | module_i2c_driver(ir38064_driver); | |
| 86 | ||
| 87 | MODULE_AUTHOR("Maxim Sloyko <maxims@google.com>"); | |
| 23c7df14 | 88 | MODULE_DESCRIPTION("PMBus driver for Infineon IR38064 and compatible chips"); |
| 00669d19 | 89 | MODULE_LICENSE("GPL"); |
| b94ca77e | 90 | MODULE_IMPORT_NS(PMBUS); |