From 1543e317f1da31b75942316931e8f491a8920811 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Thu, 04 Jan 2024 10:08:02 +0000
Subject: [PATCH] disable FB
---
kernel/drivers/hwmon/pmbus/ltc2978.c | 164 +++++++++++++++++++++++++++++++++++++++++++-----------
1 files changed, 129 insertions(+), 35 deletions(-)
diff --git a/kernel/drivers/hwmon/pmbus/ltc2978.c b/kernel/drivers/hwmon/pmbus/ltc2978.c
index 94eea2a..9a024cf 100644
--- a/kernel/drivers/hwmon/pmbus/ltc2978.c
+++ b/kernel/drivers/hwmon/pmbus/ltc2978.c
@@ -1,19 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Hardware monitoring driver for LTC2978 and compatible chips.
*
* Copyright (c) 2011 Ericsson AB.
* Copyright (c) 2013, 2014, 2015 Guenter Roeck
* Copyright (c) 2015 Linear Technology
- *
- * 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
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * Copyright (c) 2018 Analog Devices Inc.
*/
#include <linux/delay.h>
@@ -27,8 +19,15 @@
#include <linux/regulator/driver.h>
#include "pmbus.h"
-enum chips { ltc2974, ltc2975, ltc2977, ltc2978, ltc2980, ltc3880, ltc3882,
- ltc3883, ltc3886, ltc3887, ltm2987, ltm4675, ltm4676 };
+enum chips {
+ /* Managers */
+ ltc2972, ltc2974, ltc2975, ltc2977, ltc2978, ltc2979, ltc2980,
+ /* Controllers */
+ ltc3880, ltc3882, ltc3883, ltc3884, ltc3886, ltc3887, ltc3889, ltc7880,
+ /* Modules */
+ ltm2987, ltm4664, ltm4675, ltm4676, ltm4677, ltm4678, ltm4680, ltm4686,
+ ltm4700,
+};
/* Common for all chips */
#define LTC2978_MFR_VOUT_PEAK 0xdd
@@ -51,8 +50,9 @@
#define LTC3880_MFR_CLEAR_PEAKS 0xe3
#define LTC3880_MFR_TEMPERATURE2_PEAK 0xf4
-/* LTC3883 and LTC3886 only */
+/* LTC3883, LTC3884, LTC3886, LTC3889 and LTC7880 only */
#define LTC3883_MFR_IIN_PEAK 0xe1
+
/* LTC2975 only */
#define LTC2975_MFR_IIN_PEAK 0xc4
@@ -62,26 +62,41 @@
#define LTC2978_ID_MASK 0xfff0
+#define LTC2972_ID 0x0310
#define LTC2974_ID 0x0210
#define LTC2975_ID 0x0220
#define LTC2977_ID 0x0130
#define LTC2978_ID_REV1 0x0110 /* Early revision */
#define LTC2978_ID_REV2 0x0120
+#define LTC2979_ID_A 0x8060
+#define LTC2979_ID_B 0x8070
#define LTC2980_ID_A 0x8030 /* A/B for two die IDs */
#define LTC2980_ID_B 0x8040
#define LTC3880_ID 0x4020
#define LTC3882_ID 0x4200
#define LTC3882_ID_D1 0x4240 /* Dash 1 */
#define LTC3883_ID 0x4300
+#define LTC3884_ID 0x4C00
#define LTC3886_ID 0x4600
#define LTC3887_ID 0x4700
#define LTM2987_ID_A 0x8010 /* A/B for two die IDs */
#define LTM2987_ID_B 0x8020
+#define LTC3889_ID 0x4900
+#define LTC7880_ID 0x49E0
+#define LTM4664_ID 0x4120
#define LTM4675_ID 0x47a0
#define LTM4676_ID_REV1 0x4400
#define LTM4676_ID_REV2 0x4480
#define LTM4676A_ID 0x47e0
+#define LTM4677_ID_REV1 0x47B0
+#define LTM4677_ID_REV2 0x47D0
+#define LTM4678_ID_REV1 0x4100
+#define LTM4678_ID_REV2 0x4110
+#define LTM4680_ID 0x4140
+#define LTM4686_ID 0x4770
+#define LTM4700_ID 0x4130
+#define LTC2972_NUM_PAGES 2
#define LTC2974_NUM_PAGES 4
#define LTC2978_NUM_PAGES 8
#define LTC3880_NUM_PAGES 2
@@ -158,7 +173,8 @@
return -ETIMEDOUT;
}
-static int ltc_read_word_data(struct i2c_client *client, int page, int reg)
+static int ltc_read_word_data(struct i2c_client *client, int page, int phase,
+ int reg)
{
int ret;
@@ -166,7 +182,7 @@
if (ret < 0)
return ret;
- return pmbus_read_word_data(client, page, reg);
+ return pmbus_read_word_data(client, page, 0xff, reg);
}
static int ltc_read_byte_data(struct i2c_client *client, int page, int reg)
@@ -209,7 +225,7 @@
{
int ret;
- ret = ltc_read_word_data(client, page, reg);
+ ret = ltc_read_word_data(client, page, 0xff, reg);
if (ret >= 0) {
if (lin11_to_val(ret) > lin11_to_val(*pmax))
*pmax = ret;
@@ -223,7 +239,7 @@
{
int ret;
- ret = ltc_read_word_data(client, page, reg);
+ ret = ltc_read_word_data(client, page, 0xff, reg);
if (ret >= 0) {
if (lin11_to_val(ret) < lin11_to_val(*pmin))
*pmin = ret;
@@ -245,7 +261,8 @@
&data->vin_max);
break;
case PMBUS_VIRT_READ_VOUT_MAX:
- ret = ltc_read_word_data(client, page, LTC2978_MFR_VOUT_PEAK);
+ ret = ltc_read_word_data(client, page, 0xff,
+ LTC2978_MFR_VOUT_PEAK);
if (ret >= 0) {
/*
* VOUT is 16 bit unsigned with fixed exponent,
@@ -276,7 +293,8 @@
return ret;
}
-static int ltc2978_read_word_data(struct i2c_client *client, int page, int reg)
+static int ltc2978_read_word_data(struct i2c_client *client, int page,
+ int phase, int reg)
{
const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
struct ltc2978_data *data = to_ltc2978_data(info);
@@ -288,7 +306,8 @@
&data->vin_min);
break;
case PMBUS_VIRT_READ_VOUT_MIN:
- ret = ltc_read_word_data(client, page, LTC2978_MFR_VOUT_MIN);
+ ret = ltc_read_word_data(client, page, phase,
+ LTC2978_MFR_VOUT_MIN);
if (ret >= 0) {
/*
* VOUT_MIN is known to not be supported on some lots
@@ -321,7 +340,8 @@
return ret;
}
-static int ltc2974_read_word_data(struct i2c_client *client, int page, int reg)
+static int ltc2974_read_word_data(struct i2c_client *client, int page,
+ int phase, int reg)
{
const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
struct ltc2978_data *data = to_ltc2978_data(info);
@@ -340,13 +360,14 @@
ret = 0;
break;
default:
- ret = ltc2978_read_word_data(client, page, reg);
+ ret = ltc2978_read_word_data(client, page, phase, reg);
break;
}
return ret;
}
-static int ltc2975_read_word_data(struct i2c_client *client, int page, int reg)
+static int ltc2975_read_word_data(struct i2c_client *client, int page,
+ int phase, int reg)
{
const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
struct ltc2978_data *data = to_ltc2978_data(info);
@@ -374,13 +395,14 @@
ret = 0;
break;
default:
- ret = ltc2978_read_word_data(client, page, reg);
+ ret = ltc2978_read_word_data(client, page, phase, reg);
break;
}
return ret;
}
-static int ltc3880_read_word_data(struct i2c_client *client, int page, int reg)
+static int ltc3880_read_word_data(struct i2c_client *client, int page,
+ int phase, int reg)
{
const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
struct ltc2978_data *data = to_ltc2978_data(info);
@@ -412,7 +434,8 @@
return ret;
}
-static int ltc3883_read_word_data(struct i2c_client *client, int page, int reg)
+static int ltc3883_read_word_data(struct i2c_client *client, int page,
+ int phase, int reg)
{
const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
struct ltc2978_data *data = to_ltc2978_data(info);
@@ -427,7 +450,7 @@
ret = 0;
break;
default:
- ret = ltc3880_read_word_data(client, page, reg);
+ ret = ltc3880_read_word_data(client, page, phase, reg);
break;
}
return ret;
@@ -499,19 +522,30 @@
}
static const struct i2c_device_id ltc2978_id[] = {
+ {"ltc2972", ltc2972},
{"ltc2974", ltc2974},
{"ltc2975", ltc2975},
{"ltc2977", ltc2977},
{"ltc2978", ltc2978},
+ {"ltc2979", ltc2979},
{"ltc2980", ltc2980},
{"ltc3880", ltc3880},
{"ltc3882", ltc3882},
{"ltc3883", ltc3883},
+ {"ltc3884", ltc3884},
{"ltc3886", ltc3886},
{"ltc3887", ltc3887},
+ {"ltc3889", ltc3889},
+ {"ltc7880", ltc7880},
{"ltm2987", ltm2987},
+ {"ltm4664", ltm4664},
{"ltm4675", ltm4675},
{"ltm4676", ltm4676},
+ {"ltm4677", ltm4677},
+ {"ltm4678", ltm4678},
+ {"ltm4680", ltm4680},
+ {"ltm4686", ltm4686},
+ {"ltm4700", ltm4700},
{}
};
MODULE_DEVICE_TABLE(i2c, ltc2978_id);
@@ -561,7 +595,9 @@
chip_id &= LTC2978_ID_MASK;
- if (chip_id == LTC2974_ID)
+ if (chip_id == LTC2972_ID)
+ return ltc2972;
+ else if (chip_id == LTC2974_ID)
return ltc2974;
else if (chip_id == LTC2975_ID)
return ltc2975;
@@ -569,6 +605,8 @@
return ltc2977;
else if (chip_id == LTC2978_ID_REV1 || chip_id == LTC2978_ID_REV2)
return ltc2978;
+ else if (chip_id == LTC2979_ID_A || chip_id == LTC2979_ID_B)
+ return ltc2979;
else if (chip_id == LTC2980_ID_A || chip_id == LTC2980_ID_B)
return ltc2980;
else if (chip_id == LTC3880_ID)
@@ -577,28 +615,46 @@
return ltc3882;
else if (chip_id == LTC3883_ID)
return ltc3883;
+ else if (chip_id == LTC3884_ID)
+ return ltc3884;
else if (chip_id == LTC3886_ID)
return ltc3886;
else if (chip_id == LTC3887_ID)
return ltc3887;
+ else if (chip_id == LTC3889_ID)
+ return ltc3889;
+ else if (chip_id == LTC7880_ID)
+ return ltc7880;
else if (chip_id == LTM2987_ID_A || chip_id == LTM2987_ID_B)
return ltm2987;
+ else if (chip_id == LTM4664_ID)
+ return ltm4664;
else if (chip_id == LTM4675_ID)
return ltm4675;
else if (chip_id == LTM4676_ID_REV1 || chip_id == LTM4676_ID_REV2 ||
chip_id == LTM4676A_ID)
return ltm4676;
+ else if (chip_id == LTM4677_ID_REV1 || chip_id == LTM4677_ID_REV2)
+ return ltm4677;
+ else if (chip_id == LTM4678_ID_REV1 || chip_id == LTM4678_ID_REV2)
+ return ltm4678;
+ else if (chip_id == LTM4680_ID)
+ return ltm4680;
+ else if (chip_id == LTM4686_ID)
+ return ltm4686;
+ else if (chip_id == LTM4700_ID)
+ return ltm4700;
dev_err(&client->dev, "Unsupported chip ID 0x%x\n", chip_id);
return -ENODEV;
}
-static int ltc2978_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int ltc2978_probe(struct i2c_client *client)
{
int i, chip_id;
struct ltc2978_data *data;
struct pmbus_driver_info *info;
+ const struct i2c_device_id *id;
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_READ_WORD_DATA))
@@ -614,11 +670,13 @@
return chip_id;
data->id = chip_id;
+ id = i2c_match_id(ltc2978_id, client);
if (data->id != id->driver_data)
dev_warn(&client->dev,
- "Device mismatch: Configured %s, detected %s\n",
+ "Device mismatch: Configured %s (%d), detected %d\n",
id->name,
- ltc2978_id[data->id].name);
+ (int) id->driver_data,
+ chip_id);
info = &data->info;
info->write_word_data = ltc2978_write_word_data;
@@ -641,6 +699,19 @@
data->temp2_max = 0x7c00;
switch (data->id) {
+ case ltc2972:
+ info->read_word_data = ltc2975_read_word_data;
+ info->pages = LTC2972_NUM_PAGES;
+ info->func[0] = PMBUS_HAVE_IIN | PMBUS_HAVE_PIN
+ | PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT
+ | PMBUS_HAVE_TEMP2;
+ for (i = 0; i < info->pages; i++) {
+ info->func[i] |= PMBUS_HAVE_VOUT
+ | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_POUT
+ | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP
+ | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT;
+ }
+ break;
case ltc2974:
info->read_word_data = ltc2974_read_word_data;
info->pages = LTC2974_NUM_PAGES;
@@ -666,8 +737,10 @@
| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT;
}
break;
+
case ltc2977:
case ltc2978:
+ case ltc2979:
case ltc2980:
case ltm2987:
info->read_word_data = ltc2978_read_word_data;
@@ -684,6 +757,8 @@
case ltc3887:
case ltm4675:
case ltm4676:
+ case ltm4677:
+ case ltm4686:
data->features |= FEAT_CLEAR_PEAKS | FEAT_NEEDS_POLLING;
info->read_word_data = ltc3880_read_word_data;
info->pages = LTC3880_NUM_PAGES;
@@ -724,7 +799,14 @@
| PMBUS_HAVE_PIN | PMBUS_HAVE_POUT | PMBUS_HAVE_TEMP
| PMBUS_HAVE_TEMP2 | PMBUS_HAVE_STATUS_TEMP;
break;
+ case ltc3884:
case ltc3886:
+ case ltc3889:
+ case ltc7880:
+ case ltm4664:
+ case ltm4678:
+ case ltm4680:
+ case ltm4700:
data->features |= FEAT_CLEAR_PEAKS | FEAT_NEEDS_POLLING;
info->read_word_data = ltc3883_read_word_data;
info->pages = LTC3880_NUM_PAGES;
@@ -752,24 +834,36 @@
}
#endif
- return pmbus_do_probe(client, id, info);
+ return pmbus_do_probe(client, info);
}
+
#ifdef CONFIG_OF
static const struct of_device_id ltc2978_of_match[] = {
+ { .compatible = "lltc,ltc2972" },
{ .compatible = "lltc,ltc2974" },
{ .compatible = "lltc,ltc2975" },
{ .compatible = "lltc,ltc2977" },
{ .compatible = "lltc,ltc2978" },
+ { .compatible = "lltc,ltc2979" },
{ .compatible = "lltc,ltc2980" },
{ .compatible = "lltc,ltc3880" },
{ .compatible = "lltc,ltc3882" },
{ .compatible = "lltc,ltc3883" },
+ { .compatible = "lltc,ltc3884" },
{ .compatible = "lltc,ltc3886" },
{ .compatible = "lltc,ltc3887" },
+ { .compatible = "lltc,ltc3889" },
+ { .compatible = "lltc,ltc7880" },
{ .compatible = "lltc,ltm2987" },
+ { .compatible = "lltc,ltm4664" },
{ .compatible = "lltc,ltm4675" },
{ .compatible = "lltc,ltm4676" },
+ { .compatible = "lltc,ltm4677" },
+ { .compatible = "lltc,ltm4678" },
+ { .compatible = "lltc,ltm4680" },
+ { .compatible = "lltc,ltm4686" },
+ { .compatible = "lltc,ltm4700" },
{ }
};
MODULE_DEVICE_TABLE(of, ltc2978_of_match);
@@ -780,7 +874,7 @@
.name = "ltc2978",
.of_match_table = of_match_ptr(ltc2978_of_match),
},
- .probe = ltc2978_probe,
+ .probe_new = ltc2978_probe,
.remove = pmbus_do_remove,
.id_table = ltc2978_id,
};
@@ -788,5 +882,5 @@
module_i2c_driver(ltc2978_driver);
MODULE_AUTHOR("Guenter Roeck");
-MODULE_DESCRIPTION("PMBus driver for LTC2978 and comppatible chips");
+MODULE_DESCRIPTION("PMBus driver for LTC2978 and compatible chips");
MODULE_LICENSE("GPL");
--
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