drivers: hwmon: (pmbus/ltc2978) Add support for LTM4686 uModule (4e15d05d) · Commits · 戴 / test

Documentation/devicetree/bindings/hwmon/ltc2978.txt

+2 −0

Original line number	Diff line number	Diff line
		@@ -15,6 +15,7 @@ Required properties:
		* "lltc,ltm2987"
		* "lltc,ltm4675"
		* "lltc,ltm4676"
		* "lltc,ltm4686"
		- reg: I2C slave address

		Optional properties:
		@@ -30,6 +31,7 @@ Valid names of regulators depend on number of supplies supported per device:
		* ltc3880, ltc3882, ltc3886 : vout0 - vout1
		* ltc3883 : vout0
		* ltm4676 : vout0 - vout1
		* ltm4686 : vout0 - vout1

		Example:
		ltc2978@5e {

Documentation/hwmon/ltc2978

+5 −0

Original line number	Diff line number	Diff line
		@@ -55,6 +55,10 @@ Supported chips:
		Prefix: 'ltm4676'
		Addresses scanned: -
		Datasheet: http://www.linear.com/product/ltm4676
		* Analog Devices LTM4686
		Prefix: 'ltm4686'
		Addresses scanned: -
		Datasheet: http://www.analog.com/ltm4686

		Author: Guenter Roeck <linux@roeck-us.net>

		@@ -76,6 +80,7 @@ additional components on a single die. The chip is instantiated and reported
		as two separate chips on two different I2C bus addresses.
		LTM4675 is a dual 9A or single 18A μModule regulator
		LTM4676 is a dual 13A or single 26A uModule regulator.
		LTM4686 is a dual 10A or single 20A uModule regulator.


		Usage Notes

drivers/hwmon/pmbus/Kconfig

+2 −1

Original line number	Diff line number	Diff line
		@@ -83,7 +83,8 @@ config SENSORS_LTC2978_REGULATOR
		depends on SENSORS_LTC2978 && REGULATOR
		help
		If you say yes here you get regulator support for Linear
		Technology LTC2974, LTC2977, LTC2978, LTC3880, LTC3883, and LTM4676.
		Technology LTC2974, LTC2977, LTC2978, LTC3880, LTC3883, LTM4676
		and LTM4686.

		config SENSORS_LTC3815
		tristate "Linear Technologies LTC3815"

drivers/hwmon/pmbus/ltc2978.c

+8 −1

Original line number	Diff line number	Diff line
		@@ -4,6 +4,7 @@
		* Copyright (c) 2011 Ericsson AB.
		* Copyright (c) 2013, 2014, 2015 Guenter Roeck
		* Copyright (c) 2015 Linear Technology
		* Copyright (c) 2018 Analog Devices Inc.
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License as published by
		@@ -28,7 +29,7 @@
		#include "pmbus.h"

		enum chips { ltc2974, ltc2975, ltc2977, ltc2978, ltc2980, ltc3880, ltc3882,
		ltc3883, ltc3886, ltc3887, ltm2987, ltm4675, ltm4676 };
		ltc3883, ltc3886, ltc3887, ltm2987, ltm4675, ltm4676, ltm4686 };

		/* Common for all chips */
		#define LTC2978_MFR_VOUT_PEAK 0xdd
		@@ -81,6 +82,7 @@ enum chips { ltc2974, ltc2975, ltc2977, ltc2978, ltc2980, ltc3880, ltc3882,
		#define LTM4676_ID_REV1 0x4400
		#define LTM4676_ID_REV2 0x4480
		#define LTM4676A_ID 0x47e0
		#define LTM4686_ID 0x4770

		#define LTC2974_NUM_PAGES 4
		#define LTC2978_NUM_PAGES 8
		@@ -512,6 +514,7 @@ static const struct i2c_device_id ltc2978_id[] = {
		{"ltm2987", ltm2987},
		{"ltm4675", ltm4675},
		{"ltm4676", ltm4676},
		{"ltm4686", ltm4686},
		{}
		};
		MODULE_DEVICE_TABLE(i2c, ltc2978_id);
		@@ -588,6 +591,8 @@ static int ltc2978_get_id(struct i2c_client *client)
		else if (chip_id == LTM4676_ID_REV1 \|\| chip_id == LTM4676_ID_REV2 \|\|
		chip_id == LTM4676A_ID)
		return ltm4676;
		else if (chip_id == LTM4686_ID)
		return ltm4686;

		dev_err(&client->dev, "Unsupported chip ID 0x%x\n", chip_id);
		return -ENODEV;
		@@ -684,6 +689,7 @@ static int ltc2978_probe(struct i2c_client *client,
		case ltc3887:
		case ltm4675:
		case ltm4676:
		case ltm4686:
		data->features \|= FEAT_CLEAR_PEAKS \| FEAT_NEEDS_POLLING;
		info->read_word_data = ltc3880_read_word_data;
		info->pages = LTC3880_NUM_PAGES;
		@@ -770,6 +776,7 @@ static const struct of_device_id ltc2978_of_match[] = {
		{ .compatible = "lltc,ltm2987" },
		{ .compatible = "lltc,ltm4675" },
		{ .compatible = "lltc,ltm4676" },
		{ .compatible = "lltc,ltm4686" },
		{ }
		};
		MODULE_DEVICE_TABLE(of, ltc2978_of_match);

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