![Linus Torvalds](/assets/img/avatar_default.png)
Mostly cleanup. No new drivers this time around, but support for several chips added to existing drivers: TPS40400, TPS40422, MTD040, MAX34446, ZL9101M, ZL9117M, and LM96080. Also, added watchdog support for SCH56xx, and additional attributes for a couple of drivers.312869e
hwmon: (sch56xx) Add support for the integrated watchdog (v2)840e191
hwmon: (w83627ehf) Add support for temperature offset registers86dda17
hwmon: (jc42) Remove unnecessary device IDs3360a10
hwmon: (zl6100) Add support for ZL9101M and ZL9117M9271126
hwmon: (adm1275) Add support for ADM1075590defe
hwmon: (max34440) Add support for MAX3444660b873e
hwmon: (pmbus) Add more virtual registers2163340
hwmon: (pmbus) Add support for Lineage Power MDT040c5f35c9
hwmon: (pmbus) Add support for TI TPS40400 and TPS4042256aad5d
hwmon: (max34440) Add support for 'lowest' output voltage attributef15df57
hwmon: (jc42) Convert to use devm_kzalloc918ddef
hwmon: (max16065) Convert to use devm_kzallocb8a5a7c
hwmon: (smm665) Convert to use devm_kzalloc3683928
hwmon: (ltc4261) Convert to use devm_kzallocdd285ad
hwmon: (pmbus) Simplify remove functions8b313ca
hwmon: (pmbus) Convert pmbus drivers to use devm_kzalloc07404aa
hwmon: (lineage-pem) Convert to use devm_kzallocf352df6
hwmon: (hwmon-vid) Fix checkpatch issues 3230f70 hwmon: (hwmon-vid) Add new entries to VRM model table9908ad4
hwmon: (lm80) Add detection of NatSemi/TI LM960800e190b7
hwmon: (lm87) Get rid of macro-generated functions8652a26
hwmon: (lm87) Reorganize the code0fc86ec
hwmon: (applesmc) Silence uninitialized warnings7599d32
hwmon: (lm70) Fix: do not use assignment in if conditione200c14
hwmon: (lm70) Register hwmon device after creating attribute files, and remove it first01d9def
hwmon: (w83l786ng) Fix multi-line comments130067d
hwmon: (w83l785ts) Fix multi-line comments7950133
hwmon: (w83781d) Fix: do not use assignment in if conditionaff6e00
hwmon: (w83781d) Fix multi-line comments2a52dd6
hwmon: (smsc47b397) Fix multi-line comments36564ef
hwmon: (pc87427) Fix multi-line commentsb6707b7
hwmon: (max1668) Fix multi-line comments1160631
hwmon: (lm80) Fix multi-line commentsbf0f3a0
hwmon: (emc2103) Fix multi-line commentsfbb6670
hwmon: (adm1031) Fix multi-line comments94b991d
hwmon: (adm1029) Fix multi-line comments27b9de3
hwmon: (w83627hf) Fix checkpatch issuesca3ccad
hwmon: (w83l786ng) Fix checkpatch issues47efe87
hwmon: (w83793) Fix checkpatch issuesd174368
hwmon: (w83792d) Fix checkpatch issues2185696
hwmon: (vt1211) Fix: do not use assignment in if conditionb162c03
hwmon: (vt1211) Fix checkpatch issues9004ac8
hwmon: (via686a) Fix checkpatch issuesbce2778
hwmon: (pc87360) Fix: do not use assignment in if condition449a7a0
hwmon: (pc87360) Fix checkpatch issues8958dfb
hwmon: (max1619): Fix checkpatch issues09770b2
hwmon: (lm85) Fix checkpatch issues9b03079
hwmon: (lm78) Fix checkpatch issues02fe2fd
hwmon: (lm77) Fix checkpatch issuesf445a9a
hwmon: (gl520sm) Fix: do not use assignment in if condition43da3d1
hwmon: (gl520sm) Fix checkpatch issues228f8e0
hwmon: (gl518sm) Fix checkpatch issuesc8de836
hwmon: (dme1737) Fix checkpatch issues8c10369
hwmon: (asb100): Fix checkpatch issuesc387e4e
hwmon: (adm9240) Fix checkpatch issues86aa3e2
hwmon: (adm1026) Fix checkpatch issues21d2a8f
hwmon: (adm1021) Fix checkpatch issues1bd385d
hwmon: (abituguru) Fix checkpatch issues8969e84
hwmon: (w83627ehf) Fix multi-line comments51683ee
hwmon: (max1111) Fix multi-line comments1b05d22
hwmon: (ltc4151) Fix multi-line comments1b9c491
hwmon: (g760a) Fix multi-line comments20eaf72
hwmon: (f71882fg) Fix multi-line comments4bebced
hwmon: (emc1403) Fix multi-line commentsca3c7b6
hwmon: (amc6821) Fix multi-line comments10775d1
hwmon: (ads7871) Fix multi-line commentsd13d623
hwmon: (ads7828) Fix multi-line comments562fca2
hwmon: (abituguru3) Fix multi-line commentsec1c319
hwmon: (w83791d) Fix checkpatch issuesa80b10c
hwmon: (ultra45_env) Fix checkpatch issues4d387df
hwmon: (thmc50) Fix checkpatch issues85a0c0d
hwmon: (smsc47m1) Fix checkpatch issues7e61268
hwmon: (smsc47m1) Fix: do not use assignment in if condition7cc3cb6
hwmon: (smsc47m192) Fix checkpatch issues 8fda79e hwmon: (sis5595) Fix checkpatch issues5725608
hwmon: (pcf8591) Fix checkpatch issues 2804a4c hwmon: (lm93) Fix checkpatch issuesa318afd
hwmon: (lm92) Fix checkpatch issues073f1e6c
hwmon: (lm87) Fix: do not use assignment in if conditionc6370db
hwmon: (lm87) Fix checkpatch issues525ad37
hwmon: (fschmd) Fix checkpatch issuesf24d548
hwmon: (atxp1) Fix checkpatch issues724cc33
hwmon: (adt7462) Fix checkpatch issues790fa38
hwmon: (ltc4215) Fix multi-line comments430b4fc
hwmon: (ltc4245) Fix multi-line commentsa68abd3
hwmon: (wm8350-hwmon) Constify fixed string array85ebfd3
hwmon: (applesmc) Fix multi-line comments75bdc93
hwmon: (asus_atk0110) Fix multi-line comments3c4c497
hwmon: (it87) Constify fixed string arrays8deeac8
hwmon: (ad7414) Fix multi-line comments5d577db
hwmon: (jc42) Fix multi-line comments780affe
hwmon: (coretemp) Fix checkpatch error3af2861
hwmon: (pc87360) Fix multi-line comments07de3df
hwmon: (wm831x-hwmon) Fix multi-line comments3c22e23
hwmon: (smm665) Fix checkpatch error3c56b06
hwmon: (asc7621) Fix multi-line comments4a0d71c
hwmon: (it87) Fix multi-line comments86d566e
hwmon: (hwmon-vid) Fix multi-line comments5ed0488
hwmon: (hwmon) Fix multi-line comments19f2c05
hwmon: (ds1621) Fix checkpatch issues91efffe
hwmon: convert drivers/hwmon/* to use module_spi_driver()f0967ee
hwmon: convert drivers/hwmon/* to use module_i2c_driver()61ba031
hwmon: (vt8231) Fix multi-line comments9ed5bc2
hwmon: (adt7475) Fix multi-line comments2fff084
hwmon: (f71805f) Fix checkpatch issues703af96
hwmon: (max6650) Fix multi-line commentsc531eb3
hwmon: (w83781d) Fix checkpatch issues2b22de5
hwmon: (adm1025) Fix checkpatch issues7973841
hwmon: (abituguru3) Fix checkpatch issues65fe5c7
hwmon: (vt8231) Fix checkpatch issues bafda5d hwmon: (max6650) Fix checkpatch issues0117c3f
hwmon: (pmbus) Replace strict_strtol with kstrtolb3789a0
hwmon: (lm83) fix checkpatch issues93092a6
hwmon: (k8temp) fix checkpatch issues96585f1
hwmon: (lm80) reset device if error occurred6a9e7c4c
hwmon: (lm80) fix checkpatch warnings6b904b6
hwmon: (adt7470) fix checkpatch issuese6a83db
hwmon: (adt7411) fix checkpatch issues56c24af
hwmon: (lm70) fix checkpatch issues1dc3708
hwmon: (f71882fg) fix checkpatch issuesc6e8ac0
hwmon: (asus_atk0110) fix checkpatch issues99b8c83
hwmon: (adt7475) fix checkpatch issuesb2ae8f8
hwmon: (smm665) fix checkpatch issuesc9e1498
hwmon: (sht15) fix checkpatch issues0910b28
hwmon: (ibmaem) fix checkpatch issuesdcb7cb9
hwmon: (ad7414) fix checkpatch issues e91aef2 hwmon: (ad7418) fix checkpatch issues5996542
hwmon: (w83l785ts) fix checkpatch issuesa6100f6
hwmon: (wm831x-hwmon) fix checkpatch issues839a9ee
hwmon: fix checkpatch issues08f5090
hwmon: (adm1029) fix checkpatch issues4d7c5d4
hwmon: (g760a) fix checkpatch issues7b102ed
hwmon: (i5k_amb) fix checkpatch issues600151b
hwmon: use DEFINE_PCI_DEVICE_TABLE7fe83ad
hwmon: remove () used with returna6bee4a
hwmon: (amc6821) fix initialisation2faaa93
hwmon: (lm80) add error handling -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iQIcBAABAgAGBQJPaJBFAAoJEMsfJm/On5mBhkMP/09vlmsG7J3TLHcSKYJBkvSx 6VNOOJgPqnvF71Az0dX47SU3zVXhG3I7dZufd/hqOK+0CNylSB7OSZMcWvBTduea 0hDLTYj++SyVDQfVXb3zCVLU/wAE3YuXB3umWPwAKit4s2wAYYRDVCjwK96B88rv llNvo6JryuJDBUq7xiEmr0vKWMO0mKwwjpMTGCD3NpzK02ZV49T0gM94xa4gi5nM QAhNeO1AzQTx0+mBSRlq+SBBLSiXQmHcNrhnxcRMPha1bEi1D+QESozsczr+9/lz 8vuTIULOIZxafM4XkBsZdknvlZnYrA6ukituDfVfiYQVcljO/cNu+seutFQDCMJe 1zTDoNGIAwwnw0sAWWmTQwUMi+GSvlaL20gmm8FhTlvQaj9hNETsPYxEvPEsBNY1 ICCixZcwpa1mZBXmryz2btf8az0OlX/sApzyHiq24B7lSE5Fv4tBDtwypLRu5N8m C4oNXC2dqDU0gtVxzO5Lavu6LHWV9lhyZvRPO75+zxYt4i5cnO04GTAYWh46aOzO DAZcs8M2Rj++dI5VW9Vl0k8hP9eWjxtPJFhNv/OWTx4YYQRICrde+j7QZcikIUWF 0bzYI/zeIcwOg059vhnglBFM3mr7Z92jm4mftcNaSj/zuUHbWf6AQLbIq86Zq7tF 3Eru3WuTZTwAkyNAVWd5 =cUoW -----END PGP SIGNATURE----- Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging Pull hwmon changes for v3.4 from Guenter Roeck: "Mostly cleanup. No new drivers this time around, but support for several chips added to existing drivers: TPS40400, TPS40422, MTD040, MAX34446, ZL9101M, ZL9117M, and LM96080. Also, added watchdog support for SCH56xx, and additional attributes for a couple of drivers." * tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (137 commits) hwmon: (sch56xx) Add support for the integrated watchdog (v2) hwmon: (w83627ehf) Add support for temperature offset registers hwmon: (jc42) Remove unnecessary device IDs hwmon: (zl6100) Add support for ZL9101M and ZL9117M hwmon: (adm1275) Add support for ADM1075 hwmon: (max34440) Add support for MAX34446 hwmon: (pmbus) Add more virtual registers hwmon: (pmbus) Add support for Lineage Power MDT040 hwmon: (pmbus) Add support for TI TPS40400 and TPS40422 hwmon: (max34440) Add support for 'lowest' output voltage attribute hwmon: (jc42) Convert to use devm_kzalloc hwmon: (max16065) Convert to use devm_kzalloc hwmon: (smm665) Convert to use devm_kzalloc hwmon: (ltc4261) Convert to use devm_kzalloc hwmon: (pmbus) Simplify remove functions hwmon: (pmbus) Convert pmbus drivers to use devm_kzalloc hwmon: (lineage-pem) Convert to use devm_kzalloc hwmon: (hwmon-vid) Fix checkpatch issues hwmon: (hwmon-vid) Add new entries to VRM model table hwmon: (lm80) Add detection of NatSemi/TI LM96080 ...
670 lines
18 KiB
C
670 lines
18 KiB
C
/* tmp401.c
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*
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* Copyright (C) 2007,2008 Hans de Goede <hdegoede@redhat.com>
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* Preliminary tmp411 support by:
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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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* 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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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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* Driver for the Texas Instruments TMP401 SMBUS temperature sensor IC.
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*
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* Note this IC is in some aspect similar to the LM90, but it has quite a
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* few differences too, for example the local temp has a higher resolution
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* and thus has 16 bits registers for its value and limit instead of 8 bits.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/jiffies.h>
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#include <linux/i2c.h>
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#include <linux/hwmon.h>
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#include <linux/hwmon-sysfs.h>
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#include <linux/err.h>
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#include <linux/mutex.h>
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#include <linux/sysfs.h>
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/* Addresses to scan */
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static const unsigned short normal_i2c[] = { 0x4c, I2C_CLIENT_END };
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enum chips { tmp401, tmp411 };
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/*
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* The TMP401 registers, note some registers have different addresses for
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* reading and writing
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*/
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#define TMP401_STATUS 0x02
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#define TMP401_CONFIG_READ 0x03
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#define TMP401_CONFIG_WRITE 0x09
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#define TMP401_CONVERSION_RATE_READ 0x04
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#define TMP401_CONVERSION_RATE_WRITE 0x0A
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#define TMP401_TEMP_CRIT_HYST 0x21
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#define TMP401_CONSECUTIVE_ALERT 0x22
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#define TMP401_MANUFACTURER_ID_REG 0xFE
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#define TMP401_DEVICE_ID_REG 0xFF
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#define TMP411_N_FACTOR_REG 0x18
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static const u8 TMP401_TEMP_MSB[2] = { 0x00, 0x01 };
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static const u8 TMP401_TEMP_LSB[2] = { 0x15, 0x10 };
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static const u8 TMP401_TEMP_LOW_LIMIT_MSB_READ[2] = { 0x06, 0x08 };
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static const u8 TMP401_TEMP_LOW_LIMIT_MSB_WRITE[2] = { 0x0C, 0x0E };
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static const u8 TMP401_TEMP_LOW_LIMIT_LSB[2] = { 0x17, 0x14 };
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static const u8 TMP401_TEMP_HIGH_LIMIT_MSB_READ[2] = { 0x05, 0x07 };
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static const u8 TMP401_TEMP_HIGH_LIMIT_MSB_WRITE[2] = { 0x0B, 0x0D };
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static const u8 TMP401_TEMP_HIGH_LIMIT_LSB[2] = { 0x16, 0x13 };
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/* These are called the THERM limit / hysteresis / mask in the datasheet */
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static const u8 TMP401_TEMP_CRIT_LIMIT[2] = { 0x20, 0x19 };
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static const u8 TMP411_TEMP_LOWEST_MSB[2] = { 0x30, 0x34 };
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static const u8 TMP411_TEMP_LOWEST_LSB[2] = { 0x31, 0x35 };
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static const u8 TMP411_TEMP_HIGHEST_MSB[2] = { 0x32, 0x36 };
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static const u8 TMP411_TEMP_HIGHEST_LSB[2] = { 0x33, 0x37 };
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/* Flags */
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#define TMP401_CONFIG_RANGE 0x04
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#define TMP401_CONFIG_SHUTDOWN 0x40
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#define TMP401_STATUS_LOCAL_CRIT 0x01
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#define TMP401_STATUS_REMOTE_CRIT 0x02
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#define TMP401_STATUS_REMOTE_OPEN 0x04
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#define TMP401_STATUS_REMOTE_LOW 0x08
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#define TMP401_STATUS_REMOTE_HIGH 0x10
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#define TMP401_STATUS_LOCAL_LOW 0x20
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#define TMP401_STATUS_LOCAL_HIGH 0x40
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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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#define TMP411_DEVICE_ID 0x12
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/*
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* Driver data (common to all clients)
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*/
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static const struct i2c_device_id tmp401_id[] = {
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{ "tmp401", tmp401 },
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{ "tmp411", tmp411 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, tmp401_id);
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/*
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* Client data (each client gets its own)
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*/
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struct tmp401_data {
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struct device *hwmon_dev;
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struct mutex update_lock;
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char valid; /* zero until following fields are valid */
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unsigned long last_updated; /* in jiffies */
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enum chips kind;
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/* register values */
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u8 status;
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u8 config;
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u16 temp[2];
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u16 temp_low[2];
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u16 temp_high[2];
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u8 temp_crit[2];
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u8 temp_crit_hyst;
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u16 temp_lowest[2];
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u16 temp_highest[2];
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};
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/*
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* Sysfs attr show / store functions
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*/
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static int tmp401_register_to_temp(u16 reg, u8 config)
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{
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int temp = reg;
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if (config & TMP401_CONFIG_RANGE)
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temp -= 64 * 256;
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return (temp * 625 + 80) / 160;
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}
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static u16 tmp401_temp_to_register(long temp, u8 config)
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{
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if (config & TMP401_CONFIG_RANGE) {
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temp = SENSORS_LIMIT(temp, -64000, 191000);
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temp += 64000;
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} else
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temp = SENSORS_LIMIT(temp, 0, 127000);
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return (temp * 160 + 312) / 625;
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}
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static int tmp401_crit_register_to_temp(u8 reg, u8 config)
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{
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int temp = reg;
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if (config & TMP401_CONFIG_RANGE)
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temp -= 64;
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return temp * 1000;
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}
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static u8 tmp401_crit_temp_to_register(long temp, u8 config)
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{
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if (config & TMP401_CONFIG_RANGE) {
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temp = SENSORS_LIMIT(temp, -64000, 191000);
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temp += 64000;
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} else
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temp = SENSORS_LIMIT(temp, 0, 127000);
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return (temp + 500) / 1000;
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}
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static struct tmp401_data *tmp401_update_device_reg16(
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struct i2c_client *client, struct tmp401_data *data)
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{
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int i;
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for (i = 0; i < 2; i++) {
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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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data->temp[i] = i2c_smbus_read_byte_data(client,
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TMP401_TEMP_MSB[i]) << 8;
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data->temp[i] |= i2c_smbus_read_byte_data(client,
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TMP401_TEMP_LSB[i]);
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data->temp_low[i] = i2c_smbus_read_byte_data(client,
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TMP401_TEMP_LOW_LIMIT_MSB_READ[i]) << 8;
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data->temp_low[i] |= i2c_smbus_read_byte_data(client,
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TMP401_TEMP_LOW_LIMIT_LSB[i]);
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data->temp_high[i] = i2c_smbus_read_byte_data(client,
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TMP401_TEMP_HIGH_LIMIT_MSB_READ[i]) << 8;
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data->temp_high[i] |= i2c_smbus_read_byte_data(client,
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TMP401_TEMP_HIGH_LIMIT_LSB[i]);
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data->temp_crit[i] = i2c_smbus_read_byte_data(client,
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TMP401_TEMP_CRIT_LIMIT[i]);
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if (data->kind == tmp411) {
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data->temp_lowest[i] = i2c_smbus_read_byte_data(client,
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TMP411_TEMP_LOWEST_MSB[i]) << 8;
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data->temp_lowest[i] |= i2c_smbus_read_byte_data(
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client, TMP411_TEMP_LOWEST_LSB[i]);
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data->temp_highest[i] = i2c_smbus_read_byte_data(
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client, TMP411_TEMP_HIGHEST_MSB[i]) << 8;
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data->temp_highest[i] |= i2c_smbus_read_byte_data(
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client, TMP411_TEMP_HIGHEST_LSB[i]);
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}
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}
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return data;
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}
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static struct tmp401_data *tmp401_update_device(struct device *dev)
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{
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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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mutex_lock(&data->update_lock);
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if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
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data->status = i2c_smbus_read_byte_data(client, TMP401_STATUS);
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data->config = i2c_smbus_read_byte_data(client,
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TMP401_CONFIG_READ);
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tmp401_update_device_reg16(client, data);
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data->temp_crit_hyst = i2c_smbus_read_byte_data(client,
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TMP401_TEMP_CRIT_HYST);
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data->last_updated = jiffies;
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data->valid = 1;
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}
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mutex_unlock(&data->update_lock);
|
|
|
|
return data;
|
|
}
|
|
|
|
static ssize_t show_temp_value(struct device *dev,
|
|
struct device_attribute *devattr, char *buf)
|
|
{
|
|
int index = to_sensor_dev_attr(devattr)->index;
|
|
struct tmp401_data *data = tmp401_update_device(dev);
|
|
|
|
return sprintf(buf, "%d\n",
|
|
tmp401_register_to_temp(data->temp[index], data->config));
|
|
}
|
|
|
|
static ssize_t show_temp_min(struct device *dev,
|
|
struct device_attribute *devattr, char *buf)
|
|
{
|
|
int index = to_sensor_dev_attr(devattr)->index;
|
|
struct tmp401_data *data = tmp401_update_device(dev);
|
|
|
|
return sprintf(buf, "%d\n",
|
|
tmp401_register_to_temp(data->temp_low[index], data->config));
|
|
}
|
|
|
|
static ssize_t show_temp_max(struct device *dev,
|
|
struct device_attribute *devattr, char *buf)
|
|
{
|
|
int index = to_sensor_dev_attr(devattr)->index;
|
|
struct tmp401_data *data = tmp401_update_device(dev);
|
|
|
|
return sprintf(buf, "%d\n",
|
|
tmp401_register_to_temp(data->temp_high[index], data->config));
|
|
}
|
|
|
|
static ssize_t show_temp_crit(struct device *dev,
|
|
struct device_attribute *devattr, char *buf)
|
|
{
|
|
int index = to_sensor_dev_attr(devattr)->index;
|
|
struct tmp401_data *data = tmp401_update_device(dev);
|
|
|
|
return sprintf(buf, "%d\n",
|
|
tmp401_crit_register_to_temp(data->temp_crit[index],
|
|
data->config));
|
|
}
|
|
|
|
static ssize_t show_temp_crit_hyst(struct device *dev,
|
|
struct device_attribute *devattr, char *buf)
|
|
{
|
|
int temp, index = to_sensor_dev_attr(devattr)->index;
|
|
struct tmp401_data *data = tmp401_update_device(dev);
|
|
|
|
mutex_lock(&data->update_lock);
|
|
temp = tmp401_crit_register_to_temp(data->temp_crit[index],
|
|
data->config);
|
|
temp -= data->temp_crit_hyst * 1000;
|
|
mutex_unlock(&data->update_lock);
|
|
|
|
return sprintf(buf, "%d\n", temp);
|
|
}
|
|
|
|
static ssize_t show_temp_lowest(struct device *dev,
|
|
struct device_attribute *devattr, char *buf)
|
|
{
|
|
int index = to_sensor_dev_attr(devattr)->index;
|
|
struct tmp401_data *data = tmp401_update_device(dev);
|
|
|
|
return sprintf(buf, "%d\n",
|
|
tmp401_register_to_temp(data->temp_lowest[index],
|
|
data->config));
|
|
}
|
|
|
|
static ssize_t show_temp_highest(struct device *dev,
|
|
struct device_attribute *devattr, char *buf)
|
|
{
|
|
int index = to_sensor_dev_attr(devattr)->index;
|
|
struct tmp401_data *data = tmp401_update_device(dev);
|
|
|
|
return sprintf(buf, "%d\n",
|
|
tmp401_register_to_temp(data->temp_highest[index],
|
|
data->config));
|
|
}
|
|
|
|
static ssize_t show_status(struct device *dev,
|
|
struct device_attribute *devattr, char *buf)
|
|
{
|
|
int mask = to_sensor_dev_attr(devattr)->index;
|
|
struct tmp401_data *data = tmp401_update_device(dev);
|
|
|
|
if (data->status & mask)
|
|
return sprintf(buf, "1\n");
|
|
else
|
|
return sprintf(buf, "0\n");
|
|
}
|
|
|
|
static ssize_t store_temp_min(struct device *dev, struct device_attribute
|
|
*devattr, const char *buf, size_t count)
|
|
{
|
|
int index = to_sensor_dev_attr(devattr)->index;
|
|
struct tmp401_data *data = tmp401_update_device(dev);
|
|
long val;
|
|
u16 reg;
|
|
|
|
if (kstrtol(buf, 10, &val))
|
|
return -EINVAL;
|
|
|
|
reg = tmp401_temp_to_register(val, data->config);
|
|
|
|
mutex_lock(&data->update_lock);
|
|
|
|
i2c_smbus_write_byte_data(to_i2c_client(dev),
|
|
TMP401_TEMP_LOW_LIMIT_MSB_WRITE[index], reg >> 8);
|
|
i2c_smbus_write_byte_data(to_i2c_client(dev),
|
|
TMP401_TEMP_LOW_LIMIT_LSB[index], reg & 0xFF);
|
|
|
|
data->temp_low[index] = reg;
|
|
|
|
mutex_unlock(&data->update_lock);
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t store_temp_max(struct device *dev, struct device_attribute
|
|
*devattr, const char *buf, size_t count)
|
|
{
|
|
int index = to_sensor_dev_attr(devattr)->index;
|
|
struct tmp401_data *data = tmp401_update_device(dev);
|
|
long val;
|
|
u16 reg;
|
|
|
|
if (kstrtol(buf, 10, &val))
|
|
return -EINVAL;
|
|
|
|
reg = tmp401_temp_to_register(val, data->config);
|
|
|
|
mutex_lock(&data->update_lock);
|
|
|
|
i2c_smbus_write_byte_data(to_i2c_client(dev),
|
|
TMP401_TEMP_HIGH_LIMIT_MSB_WRITE[index], reg >> 8);
|
|
i2c_smbus_write_byte_data(to_i2c_client(dev),
|
|
TMP401_TEMP_HIGH_LIMIT_LSB[index], reg & 0xFF);
|
|
|
|
data->temp_high[index] = reg;
|
|
|
|
mutex_unlock(&data->update_lock);
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t store_temp_crit(struct device *dev, struct device_attribute
|
|
*devattr, const char *buf, size_t count)
|
|
{
|
|
int index = to_sensor_dev_attr(devattr)->index;
|
|
struct tmp401_data *data = tmp401_update_device(dev);
|
|
long val;
|
|
u8 reg;
|
|
|
|
if (kstrtol(buf, 10, &val))
|
|
return -EINVAL;
|
|
|
|
reg = tmp401_crit_temp_to_register(val, data->config);
|
|
|
|
mutex_lock(&data->update_lock);
|
|
|
|
i2c_smbus_write_byte_data(to_i2c_client(dev),
|
|
TMP401_TEMP_CRIT_LIMIT[index], reg);
|
|
|
|
data->temp_crit[index] = reg;
|
|
|
|
mutex_unlock(&data->update_lock);
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t store_temp_crit_hyst(struct device *dev, struct device_attribute
|
|
*devattr, const char *buf, size_t count)
|
|
{
|
|
int temp, index = to_sensor_dev_attr(devattr)->index;
|
|
struct tmp401_data *data = tmp401_update_device(dev);
|
|
long val;
|
|
u8 reg;
|
|
|
|
if (kstrtol(buf, 10, &val))
|
|
return -EINVAL;
|
|
|
|
if (data->config & TMP401_CONFIG_RANGE)
|
|
val = SENSORS_LIMIT(val, -64000, 191000);
|
|
else
|
|
val = SENSORS_LIMIT(val, 0, 127000);
|
|
|
|
mutex_lock(&data->update_lock);
|
|
temp = tmp401_crit_register_to_temp(data->temp_crit[index],
|
|
data->config);
|
|
val = SENSORS_LIMIT(val, temp - 255000, temp);
|
|
reg = ((temp - val) + 500) / 1000;
|
|
|
|
i2c_smbus_write_byte_data(to_i2c_client(dev),
|
|
TMP401_TEMP_CRIT_HYST, reg);
|
|
|
|
data->temp_crit_hyst = reg;
|
|
|
|
mutex_unlock(&data->update_lock);
|
|
|
|
return count;
|
|
}
|
|
|
|
/*
|
|
* Resets the historical measurements of minimum and maximum temperatures.
|
|
* This is done by writing any value to any of the minimum/maximum registers
|
|
* (0x30-0x37).
|
|
*/
|
|
static ssize_t reset_temp_history(struct device *dev,
|
|
struct device_attribute *devattr, const char *buf, size_t count)
|
|
{
|
|
long val;
|
|
|
|
if (kstrtol(buf, 10, &val))
|
|
return -EINVAL;
|
|
|
|
if (val != 1) {
|
|
dev_err(dev, "temp_reset_history value %ld not"
|
|
" supported. Use 1 to reset the history!\n", val);
|
|
return -EINVAL;
|
|
}
|
|
i2c_smbus_write_byte_data(to_i2c_client(dev),
|
|
TMP411_TEMP_LOWEST_MSB[0], val);
|
|
|
|
return count;
|
|
}
|
|
|
|
static struct sensor_device_attribute tmp401_attr[] = {
|
|
SENSOR_ATTR(temp1_input, S_IRUGO, show_temp_value, NULL, 0),
|
|
SENSOR_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp_min,
|
|
store_temp_min, 0),
|
|
SENSOR_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max,
|
|
store_temp_max, 0),
|
|
SENSOR_ATTR(temp1_crit, S_IWUSR | S_IRUGO, show_temp_crit,
|
|
store_temp_crit, 0),
|
|
SENSOR_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_temp_crit_hyst,
|
|
store_temp_crit_hyst, 0),
|
|
SENSOR_ATTR(temp1_min_alarm, S_IRUGO, show_status, NULL,
|
|
TMP401_STATUS_LOCAL_LOW),
|
|
SENSOR_ATTR(temp1_max_alarm, S_IRUGO, show_status, NULL,
|
|
TMP401_STATUS_LOCAL_HIGH),
|
|
SENSOR_ATTR(temp1_crit_alarm, S_IRUGO, show_status, NULL,
|
|
TMP401_STATUS_LOCAL_CRIT),
|
|
SENSOR_ATTR(temp2_input, S_IRUGO, show_temp_value, NULL, 1),
|
|
SENSOR_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp_min,
|
|
store_temp_min, 1),
|
|
SENSOR_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp_max,
|
|
store_temp_max, 1),
|
|
SENSOR_ATTR(temp2_crit, S_IWUSR | S_IRUGO, show_temp_crit,
|
|
store_temp_crit, 1),
|
|
SENSOR_ATTR(temp2_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL, 1),
|
|
SENSOR_ATTR(temp2_fault, S_IRUGO, show_status, NULL,
|
|
TMP401_STATUS_REMOTE_OPEN),
|
|
SENSOR_ATTR(temp2_min_alarm, S_IRUGO, show_status, NULL,
|
|
TMP401_STATUS_REMOTE_LOW),
|
|
SENSOR_ATTR(temp2_max_alarm, S_IRUGO, show_status, NULL,
|
|
TMP401_STATUS_REMOTE_HIGH),
|
|
SENSOR_ATTR(temp2_crit_alarm, S_IRUGO, show_status, NULL,
|
|
TMP401_STATUS_REMOTE_CRIT),
|
|
};
|
|
|
|
/*
|
|
* Additional features of the TMP411 chip.
|
|
* The TMP411 stores the minimum and maximum
|
|
* temperature measured since power-on, chip-reset, or
|
|
* minimum and maximum register reset for both the local
|
|
* and remote channels.
|
|
*/
|
|
static struct sensor_device_attribute tmp411_attr[] = {
|
|
SENSOR_ATTR(temp1_highest, S_IRUGO, show_temp_highest, NULL, 0),
|
|
SENSOR_ATTR(temp1_lowest, S_IRUGO, show_temp_lowest, NULL, 0),
|
|
SENSOR_ATTR(temp2_highest, S_IRUGO, show_temp_highest, NULL, 1),
|
|
SENSOR_ATTR(temp2_lowest, S_IRUGO, show_temp_lowest, NULL, 1),
|
|
SENSOR_ATTR(temp_reset_history, S_IWUSR, NULL, reset_temp_history, 0),
|
|
};
|
|
|
|
/*
|
|
* Begin non sysfs callback code (aka Real code)
|
|
*/
|
|
|
|
static void tmp401_init_client(struct i2c_client *client)
|
|
{
|
|
int config, config_orig;
|
|
|
|
/* Set the conversion rate to 2 Hz */
|
|
i2c_smbus_write_byte_data(client, TMP401_CONVERSION_RATE_WRITE, 5);
|
|
|
|
/* Start conversions (disable shutdown if necessary) */
|
|
config = i2c_smbus_read_byte_data(client, TMP401_CONFIG_READ);
|
|
if (config < 0) {
|
|
dev_warn(&client->dev, "Initialization failed!\n");
|
|
return;
|
|
}
|
|
|
|
config_orig = config;
|
|
config &= ~TMP401_CONFIG_SHUTDOWN;
|
|
|
|
if (config != config_orig)
|
|
i2c_smbus_write_byte_data(client, TMP401_CONFIG_WRITE, config);
|
|
}
|
|
|
|
static int tmp401_detect(struct i2c_client *client,
|
|
struct i2c_board_info *info)
|
|
{
|
|
enum chips kind;
|
|
struct i2c_adapter *adapter = client->adapter;
|
|
u8 reg;
|
|
|
|
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
|
|
return -ENODEV;
|
|
|
|
/* Detect and identify the chip */
|
|
reg = i2c_smbus_read_byte_data(client, TMP401_MANUFACTURER_ID_REG);
|
|
if (reg != TMP401_MANUFACTURER_ID)
|
|
return -ENODEV;
|
|
|
|
reg = i2c_smbus_read_byte_data(client, TMP401_DEVICE_ID_REG);
|
|
|
|
switch (reg) {
|
|
case TMP401_DEVICE_ID:
|
|
kind = tmp401;
|
|
break;
|
|
case TMP411_DEVICE_ID:
|
|
kind = tmp411;
|
|
break;
|
|
default:
|
|
return -ENODEV;
|
|
}
|
|
|
|
reg = i2c_smbus_read_byte_data(client, TMP401_CONFIG_READ);
|
|
if (reg & 0x1b)
|
|
return -ENODEV;
|
|
|
|
reg = i2c_smbus_read_byte_data(client, TMP401_CONVERSION_RATE_READ);
|
|
/* Datasheet says: 0x1-0x6 */
|
|
if (reg > 15)
|
|
return -ENODEV;
|
|
|
|
strlcpy(info->type, tmp401_id[kind].name, I2C_NAME_SIZE);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tmp401_remove(struct i2c_client *client)
|
|
{
|
|
struct tmp401_data *data = i2c_get_clientdata(client);
|
|
int i;
|
|
|
|
if (data->hwmon_dev)
|
|
hwmon_device_unregister(data->hwmon_dev);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(tmp401_attr); i++)
|
|
device_remove_file(&client->dev, &tmp401_attr[i].dev_attr);
|
|
|
|
if (data->kind == tmp411) {
|
|
for (i = 0; i < ARRAY_SIZE(tmp411_attr); i++)
|
|
device_remove_file(&client->dev,
|
|
&tmp411_attr[i].dev_attr);
|
|
}
|
|
|
|
kfree(data);
|
|
return 0;
|
|
}
|
|
|
|
static int tmp401_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
int i, err = 0;
|
|
struct tmp401_data *data;
|
|
const char *names[] = { "TMP401", "TMP411" };
|
|
|
|
data = kzalloc(sizeof(struct tmp401_data), GFP_KERNEL);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
i2c_set_clientdata(client, data);
|
|
mutex_init(&data->update_lock);
|
|
data->kind = id->driver_data;
|
|
|
|
/* Initialize the TMP401 chip */
|
|
tmp401_init_client(client);
|
|
|
|
/* Register sysfs hooks */
|
|
for (i = 0; i < ARRAY_SIZE(tmp401_attr); i++) {
|
|
err = device_create_file(&client->dev,
|
|
&tmp401_attr[i].dev_attr);
|
|
if (err)
|
|
goto exit_remove;
|
|
}
|
|
|
|
/* Register additional tmp411 sysfs hooks */
|
|
if (data->kind == tmp411) {
|
|
for (i = 0; i < ARRAY_SIZE(tmp411_attr); i++) {
|
|
err = device_create_file(&client->dev,
|
|
&tmp411_attr[i].dev_attr);
|
|
if (err)
|
|
goto exit_remove;
|
|
}
|
|
}
|
|
|
|
data->hwmon_dev = hwmon_device_register(&client->dev);
|
|
if (IS_ERR(data->hwmon_dev)) {
|
|
err = PTR_ERR(data->hwmon_dev);
|
|
data->hwmon_dev = NULL;
|
|
goto exit_remove;
|
|
}
|
|
|
|
dev_info(&client->dev, "Detected TI %s chip\n", names[data->kind]);
|
|
|
|
return 0;
|
|
|
|
exit_remove:
|
|
tmp401_remove(client); /* will also free data for us */
|
|
return err;
|
|
}
|
|
|
|
static struct i2c_driver tmp401_driver = {
|
|
.class = I2C_CLASS_HWMON,
|
|
.driver = {
|
|
.name = "tmp401",
|
|
},
|
|
.probe = tmp401_probe,
|
|
.remove = tmp401_remove,
|
|
.id_table = tmp401_id,
|
|
.detect = tmp401_detect,
|
|
.address_list = normal_i2c,
|
|
};
|
|
|
|
module_i2c_driver(tmp401_driver);
|
|
|
|
MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
|
|
MODULE_DESCRIPTION("Texas Instruments TMP401 temperature sensor driver");
|
|
MODULE_LICENSE("GPL");
|