hwmon: (tmp401) Add support for TMP432
TMP432 is similar to TMP431 with a second external temperature sensor. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Guenter Roeck
parent
0846e30dd4
commit
29dd3b64b9
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@ -14,6 +14,10 @@ Supported chips:
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Prefix: 'tmp431'
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Addresses scanned: I2C 0x4c, 0x4d
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Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp431.html
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* Texas Instruments TMP432
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Prefix: 'tmp432'
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Addresses scanned: I2C 0x4c, 0x4d
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Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp432.html
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Authors:
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Hans de Goede <hdegoede@redhat.com>
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@ -23,8 +27,8 @@ Description
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-----------
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This driver implements support for Texas Instruments TMP401, TMP411,
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and TMP431 chips. These chips implement one remote and one local
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temperature sensor. Temperature is measured in degrees
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TMP431, and TMP432 chips. These chips implement one or two remote and
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one local temperature sensors. Temperature is measured in degrees
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Celsius. Resolution of the remote sensor is 0.0625 degree. Local
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sensor resolution can be set to 0.5, 0.25, 0.125 or 0.0625 degree (not
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supported by the driver so far, so using the default resolution of 0.5
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@ -44,3 +48,6 @@ some additional features.
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Exported via sysfs attribute temp_reset_history. Writing 1 to this
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file triggers a reset.
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TMP432 is compatible with TMP401 and TMP431. It supports two external
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temperature sensors.
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@ -1249,7 +1249,7 @@ config SENSORS_TMP401
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depends on I2C
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help
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If you say yes here you get support for Texas Instruments TMP401,
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TMP411, and TMP431 temperature sensor chips.
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TMP411, TMP431, and TMP432 temperature sensor chips.
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This driver can also be built as a module. If so, the module
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will be called tmp401.
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@ -5,6 +5,9 @@
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* Gabriel Konat, Sander Leget, Wouter Willems
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* Copyright (C) 2009 Andre Prendel <andre.prendel@gmx.de>
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*
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* Cleanup and support for TMP431 and TMP432 by Guenter Roeck
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* Copyright (c) 2013 Guenter Roeck <linux@roeck-us.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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@ -43,7 +46,7 @@
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/* Addresses to scan */
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static const unsigned short normal_i2c[] = { 0x4c, 0x4d, 0x4e, I2C_CLIENT_END };
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enum chips { tmp401, tmp411, tmp431 };
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enum chips { tmp401, tmp411, tmp431, tmp432 };
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/*
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* The TMP401 registers, note some registers have different addresses for
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@ -85,6 +88,30 @@ static const u8 TMP401_TEMP_LSB[6][2] = {
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{ 0x33, 0x37 }, /* highest */
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};
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static const u8 TMP432_TEMP_MSB_READ[4][3] = {
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{ 0x00, 0x01, 0x23 }, /* temp */
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{ 0x06, 0x08, 0x16 }, /* low limit */
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{ 0x05, 0x07, 0x15 }, /* high limit */
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{ 0x20, 0x19, 0x1A }, /* therm (crit) limit */
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};
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static const u8 TMP432_TEMP_MSB_WRITE[4][3] = {
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{ 0, 0, 0 }, /* temp - unused */
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{ 0x0C, 0x0E, 0x16 }, /* low limit */
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{ 0x0B, 0x0D, 0x15 }, /* high limit */
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{ 0x20, 0x19, 0x1A }, /* therm (crit) limit */
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};
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static const u8 TMP432_TEMP_LSB[3][3] = {
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{ 0x29, 0x10, 0x24 }, /* temp */
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{ 0x3E, 0x14, 0x18 }, /* low limit */
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{ 0x3D, 0x13, 0x17 }, /* high limit */
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};
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/* [0] = fault, [1] = low, [2] = high, [3] = therm/crit */
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static const u8 TMP432_STATUS_REG[] = {
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0x1b, 0x36, 0x35, 0x37 };
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/* Flags */
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#define TMP401_CONFIG_RANGE BIT(2)
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#define TMP401_CONFIG_SHUTDOWN BIT(6)
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@ -96,6 +123,11 @@ static const u8 TMP401_TEMP_LSB[6][2] = {
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#define TMP401_STATUS_LOCAL_LOW BIT(5)
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#define TMP401_STATUS_LOCAL_HIGH BIT(6)
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/* On TMP432, each status has its own register */
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#define TMP432_STATUS_LOCAL BIT(0)
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#define TMP432_STATUS_REMOTE1 BIT(1)
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#define TMP432_STATUS_REMOTE2 BIT(2)
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/* Manufacturer / Device ID's */
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#define TMP401_MANUFACTURER_ID 0x55
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#define TMP401_DEVICE_ID 0x11
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@ -103,6 +135,7 @@ static const u8 TMP401_TEMP_LSB[6][2] = {
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#define TMP411B_DEVICE_ID 0x13
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#define TMP411C_DEVICE_ID 0x10
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#define TMP431_DEVICE_ID 0x31
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#define TMP432_DEVICE_ID 0x32
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/*
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* Driver data (common to all clients)
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@ -112,6 +145,7 @@ static const struct i2c_device_id tmp401_id[] = {
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{ "tmp401", tmp401 },
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{ "tmp411", tmp411 },
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{ "tmp431", tmp431 },
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{ "tmp432", tmp432 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, tmp401_id);
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@ -130,9 +164,9 @@ struct tmp401_data {
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unsigned int update_interval; /* in milliseconds */
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/* register values */
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u8 status;
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u8 status[4];
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u8 config;
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u16 temp[6][2];
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u16 temp[6][3];
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u8 temp_crit_hyst;
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};
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@ -166,22 +200,27 @@ static int tmp401_update_device_reg16(struct i2c_client *client,
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{
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int i, j, val;
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int num_regs = data->kind == tmp411 ? 6 : 4;
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int num_sensors = data->kind == tmp432 ? 3 : 2;
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for (i = 0; i < 2; i++) { /* local / rem1 */
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for (i = 0; i < num_sensors; i++) { /* local / r1 / r2 */
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for (j = 0; j < num_regs; j++) { /* temp / low / ... */
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u8 regaddr;
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/*
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* High byte must be read first immediately followed
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* by the low byte
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*/
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val = i2c_smbus_read_byte_data(client,
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TMP401_TEMP_MSB_READ[j][i]);
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regaddr = data->kind == tmp432 ?
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TMP432_TEMP_MSB_READ[j][i] :
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TMP401_TEMP_MSB_READ[j][i];
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val = i2c_smbus_read_byte_data(client, regaddr);
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if (val < 0)
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return val;
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data->temp[j][i] = val << 8;
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if (j == 3) /* crit is msb only */
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continue;
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val = i2c_smbus_read_byte_data(client,
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TMP401_TEMP_LSB[j][i]);
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regaddr = data->kind == tmp432 ? TMP432_TEMP_LSB[j][i]
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: TMP401_TEMP_LSB[j][i];
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val = i2c_smbus_read_byte_data(client, regaddr);
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if (val < 0)
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return val;
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data->temp[j][i] |= val;
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@ -195,7 +234,7 @@ static struct tmp401_data *tmp401_update_device(struct device *dev)
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struct i2c_client *client = to_i2c_client(dev);
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struct tmp401_data *data = i2c_get_clientdata(client);
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struct tmp401_data *ret = data;
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int val;
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int i, val;
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unsigned long next_update;
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mutex_lock(&data->update_lock);
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@ -203,12 +242,38 @@ static struct tmp401_data *tmp401_update_device(struct device *dev)
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next_update = data->last_updated +
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msecs_to_jiffies(data->update_interval) + 1;
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if (time_after(jiffies, next_update) || !data->valid) {
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val = i2c_smbus_read_byte_data(client, TMP401_STATUS);
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if (val < 0) {
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ret = ERR_PTR(val);
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goto abort;
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if (data->kind != tmp432) {
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/*
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* The driver uses the TMP432 status format internally.
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* Convert status to TMP432 format for other chips.
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*/
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val = i2c_smbus_read_byte_data(client, TMP401_STATUS);
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if (val < 0) {
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ret = ERR_PTR(val);
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goto abort;
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}
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data->status[0] =
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(val & TMP401_STATUS_REMOTE_OPEN) >> 1;
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data->status[1] =
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((val & TMP401_STATUS_REMOTE_LOW) >> 2) |
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((val & TMP401_STATUS_LOCAL_LOW) >> 5);
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data->status[2] =
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((val & TMP401_STATUS_REMOTE_HIGH) >> 3) |
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((val & TMP401_STATUS_LOCAL_HIGH) >> 6);
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data->status[3] = val & (TMP401_STATUS_LOCAL_CRIT
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| TMP401_STATUS_REMOTE_CRIT);
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} else {
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for (i = 0; i < ARRAY_SIZE(data->status); i++) {
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val = i2c_smbus_read_byte_data(client,
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TMP432_STATUS_REG[i]);
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if (val < 0) {
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ret = ERR_PTR(val);
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goto abort;
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}
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data->status[i] = val;
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}
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}
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data->status = val;
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val = i2c_smbus_read_byte_data(client, TMP401_CONFIG_READ);
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if (val < 0) {
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ret = ERR_PTR(val);
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@ -270,13 +335,14 @@ static ssize_t show_temp_crit_hyst(struct device *dev,
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static ssize_t show_status(struct device *dev,
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struct device_attribute *devattr, char *buf)
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{
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int mask = to_sensor_dev_attr(devattr)->index;
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int nr = to_sensor_dev_attr_2(devattr)->nr;
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int mask = to_sensor_dev_attr_2(devattr)->index;
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struct tmp401_data *data = tmp401_update_device(dev);
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if (IS_ERR(data))
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return PTR_ERR(data);
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return sprintf(buf, "%d\n", !!(data->status & mask));
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return sprintf(buf, "%d\n", !!(data->status[nr] & mask));
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}
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static ssize_t store_temp(struct device *dev, struct device_attribute *devattr,
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@ -288,6 +354,7 @@ static ssize_t store_temp(struct device *dev, struct device_attribute *devattr,
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struct tmp401_data *data = tmp401_update_device(dev);
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long val;
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u16 reg;
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u8 regaddr;
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if (IS_ERR(data))
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return PTR_ERR(data);
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@ -299,13 +366,13 @@ static ssize_t store_temp(struct device *dev, struct device_attribute *devattr,
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mutex_lock(&data->update_lock);
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i2c_smbus_write_byte_data(client,
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TMP401_TEMP_MSB_WRITE[nr][index],
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reg >> 8);
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regaddr = data->kind == tmp432 ? TMP432_TEMP_MSB_WRITE[nr][index]
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: TMP401_TEMP_MSB_WRITE[nr][index];
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i2c_smbus_write_byte_data(client, regaddr, reg >> 8);
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if (nr != 3) {
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i2c_smbus_write_byte_data(client,
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TMP401_TEMP_LSB[nr][index],
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reg & 0xFF);
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regaddr = data->kind == tmp432 ? TMP432_TEMP_LSB[nr][index]
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: TMP401_TEMP_LSB[nr][index];
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i2c_smbus_write_byte_data(client, regaddr, reg & 0xFF);
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}
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data->temp[nr][index] = reg;
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@ -426,12 +493,12 @@ static SENSOR_DEVICE_ATTR_2(temp1_crit, S_IWUSR | S_IRUGO, show_temp,
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store_temp, 3, 0);
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static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO,
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show_temp_crit_hyst, store_temp_crit_hyst, 0);
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static SENSOR_DEVICE_ATTR(temp1_min_alarm, S_IRUGO, show_status, NULL,
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TMP401_STATUS_LOCAL_LOW);
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static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_status, NULL,
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TMP401_STATUS_LOCAL_HIGH);
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static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO, show_status, NULL,
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TMP401_STATUS_LOCAL_CRIT);
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static SENSOR_DEVICE_ATTR_2(temp1_min_alarm, S_IRUGO, show_status, NULL,
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1, TMP432_STATUS_LOCAL);
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static SENSOR_DEVICE_ATTR_2(temp1_max_alarm, S_IRUGO, show_status, NULL,
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2, TMP432_STATUS_LOCAL);
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static SENSOR_DEVICE_ATTR_2(temp1_crit_alarm, S_IRUGO, show_status, NULL,
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3, TMP432_STATUS_LOCAL);
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static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 0, 1);
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static SENSOR_DEVICE_ATTR_2(temp2_min, S_IWUSR | S_IRUGO, show_temp,
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store_temp, 1, 1);
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@ -441,14 +508,14 @@ static SENSOR_DEVICE_ATTR_2(temp2_crit, S_IWUSR | S_IRUGO, show_temp,
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store_temp, 3, 1);
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static SENSOR_DEVICE_ATTR(temp2_crit_hyst, S_IRUGO, show_temp_crit_hyst,
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NULL, 1);
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static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_status, NULL,
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TMP401_STATUS_REMOTE_OPEN);
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static SENSOR_DEVICE_ATTR(temp2_min_alarm, S_IRUGO, show_status, NULL,
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TMP401_STATUS_REMOTE_LOW);
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static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO, show_status, NULL,
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TMP401_STATUS_REMOTE_HIGH);
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static SENSOR_DEVICE_ATTR(temp2_crit_alarm, S_IRUGO, show_status, NULL,
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TMP401_STATUS_REMOTE_CRIT);
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static SENSOR_DEVICE_ATTR_2(temp2_fault, S_IRUGO, show_status, NULL,
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0, TMP432_STATUS_REMOTE1);
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static SENSOR_DEVICE_ATTR_2(temp2_min_alarm, S_IRUGO, show_status, NULL,
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1, TMP432_STATUS_REMOTE1);
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static SENSOR_DEVICE_ATTR_2(temp2_max_alarm, S_IRUGO, show_status, NULL,
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2, TMP432_STATUS_REMOTE1);
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static SENSOR_DEVICE_ATTR_2(temp2_crit_alarm, S_IRUGO, show_status, NULL,
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3, TMP432_STATUS_REMOTE1);
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static DEVICE_ATTR(update_interval, S_IRUGO | S_IWUSR, show_update_interval,
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set_update_interval);
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@ -509,6 +576,42 @@ static const struct attribute_group tmp411_group = {
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.attrs = tmp411_attributes,
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};
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static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 0, 2);
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static SENSOR_DEVICE_ATTR_2(temp3_min, S_IWUSR | S_IRUGO, show_temp,
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store_temp, 1, 2);
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static SENSOR_DEVICE_ATTR_2(temp3_max, S_IWUSR | S_IRUGO, show_temp,
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store_temp, 2, 2);
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static SENSOR_DEVICE_ATTR_2(temp3_crit, S_IWUSR | S_IRUGO, show_temp,
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store_temp, 3, 2);
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static SENSOR_DEVICE_ATTR(temp3_crit_hyst, S_IRUGO, show_temp_crit_hyst,
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NULL, 2);
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static SENSOR_DEVICE_ATTR_2(temp3_fault, S_IRUGO, show_status, NULL,
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0, TMP432_STATUS_REMOTE2);
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static SENSOR_DEVICE_ATTR_2(temp3_min_alarm, S_IRUGO, show_status, NULL,
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1, TMP432_STATUS_REMOTE2);
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static SENSOR_DEVICE_ATTR_2(temp3_max_alarm, S_IRUGO, show_status, NULL,
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2, TMP432_STATUS_REMOTE2);
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static SENSOR_DEVICE_ATTR_2(temp3_crit_alarm, S_IRUGO, show_status, NULL,
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3, TMP432_STATUS_REMOTE2);
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static struct attribute *tmp432_attributes[] = {
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&sensor_dev_attr_temp3_input.dev_attr.attr,
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&sensor_dev_attr_temp3_min.dev_attr.attr,
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&sensor_dev_attr_temp3_max.dev_attr.attr,
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&sensor_dev_attr_temp3_crit.dev_attr.attr,
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&sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
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&sensor_dev_attr_temp3_fault.dev_attr.attr,
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&sensor_dev_attr_temp3_max_alarm.dev_attr.attr,
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&sensor_dev_attr_temp3_min_alarm.dev_attr.attr,
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&sensor_dev_attr_temp3_crit_alarm.dev_attr.attr,
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NULL
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};
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static const struct attribute_group tmp432_group = {
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.attrs = tmp432_attributes,
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};
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/*
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* Begin non sysfs callback code (aka Real code)
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*/
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@ -579,6 +682,11 @@ static int tmp401_detect(struct i2c_client *client,
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return -ENODEV;
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kind = tmp431;
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break;
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case TMP432_DEVICE_ID:
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if (client->addr == 0x4e)
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return -ENODEV;
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kind = tmp432;
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break;
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default:
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return -ENODEV;
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}
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@ -610,6 +718,9 @@ static int tmp401_remove(struct i2c_client *client)
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if (data->kind == tmp411)
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sysfs_remove_group(&dev->kobj, &tmp411_group);
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if (data->kind == tmp432)
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sysfs_remove_group(&dev->kobj, &tmp432_group);
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return 0;
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}
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@ -619,7 +730,7 @@ static int tmp401_probe(struct i2c_client *client,
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struct device *dev = &client->dev;
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int err;
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struct tmp401_data *data;
|
||||
const char *names[] = { "TMP401", "TMP411", "TMP431" };
|
||||
const char *names[] = { "TMP401", "TMP411", "TMP431", "TMP432" };
|
||||
|
||||
data = devm_kzalloc(dev, sizeof(struct tmp401_data), GFP_KERNEL);
|
||||
if (!data)
|
||||
|
|
@ -644,6 +755,13 @@ static int tmp401_probe(struct i2c_client *client,
|
|||
goto exit_remove;
|
||||
}
|
||||
|
||||
/* Register additional tmp432 sysfs hooks */
|
||||
if (data->kind == tmp432) {
|
||||
err = sysfs_create_group(&dev->kobj, &tmp432_group);
|
||||
if (err)
|
||||
goto exit_remove;
|
||||
}
|
||||
|
||||
data->hwmon_dev = hwmon_device_register(dev);
|
||||
if (IS_ERR(data->hwmon_dev)) {
|
||||
err = PTR_ERR(data->hwmon_dev);
|
||||
|
|
|
|||
Loading…
Reference in New Issue