diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-01 13:50:06 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-01 13:50:06 -0700 |
commit | cc150a2861e744d8f574d571762cc7e9f928abb3 (patch) | |
tree | a1567d76fc52dc56ba483d7dafa82fada5fc28ba /Documentation/hwmon/adt7410 | |
parent | d9a807461fc8cc0d6ba589ea0730d139122af012 (diff) | |
parent | 592758b12f2e327bb5902dabd3d36b2e86049871 (diff) |
Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon updates from Guenter Roeck:
"New drivers for: MCP3221, ADT7410, MAX197
Chip support added to existing drivers: LM71, LM74, MAX1110, MAX1112,
MAX1113, INA220, INA230, MCP3221
Cleanup: Use devm_ functions, fixed build warnings, removed deprecated
sysfs attributes, code simplifications, dropped dependencies on
EXPERIMENTAL"
* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (64 commits)
hwmon: (mcp3021) Add MCP3221 support
hwmon: (mcp3021) Prepare MCP3021 driver to support other chips
hwmon: (w83791d) Drop unnecessary compare statements
hwmon: (lm93) Drop unnecessary compare statement
hwmon: (lm70) Simplify show_name function
hwmon: (adcxx) Simplify show_name function
hwmon: Drop dependencies on EXPERIMENTAL
hwmon: (it87) Fix Kconfig for IT87 driver
hwmon: (sht15) move header to linux/platform_data/
hwmon: (asus_atk0110) Remove useless kfree
hwmon: (ina2xx) Add support for INA220 and INA230
hwmon: (ina2xx) Use structure array to distinguish chip types
hwmon: (max1111) Add support for MAX1110, MAX1112, and MAX1113
hwmon: (lm70) Add support for LM71 and LM74
hwmon: (Documentation) Update feature-removal-schedule.txt
hwmon: (w83793) Remove legacy chassis intrusion detection sysfs attributes
hwmon: (w83792d) Remove legacy chassis intrusion detection attributes
hwmon: (adm9240) Remove legacy chassis intrusion detection sysfs attribute
hwmon: (lm70) Allow 4wire SPI bus with LM70
hwmon: (sht15) remove multiple driver registration
...
Diffstat (limited to 'Documentation/hwmon/adt7410')
-rw-r--r-- | Documentation/hwmon/adt7410 | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/Documentation/hwmon/adt7410 b/Documentation/hwmon/adt7410 new file mode 100644 index 000000000000..96004000dc2a --- /dev/null +++ b/Documentation/hwmon/adt7410 @@ -0,0 +1,51 @@ +Kernel driver adt7410 +===================== + +Supported chips: + * Analog Devices ADT7410 + Prefix: 'adt7410' + Addresses scanned: I2C 0x48 - 0x4B + Datasheet: Publicly available at the Analog Devices website + http://www.analog.com/static/imported-files/data_sheets/ADT7410.pdf + +Author: Hartmut Knaack <knaack.h@gmx.de> + +Description +----------- + +The ADT7410 is a temperature sensor with rated temperature range of -55°C to ++150°C. It has a high accuracy of +/-0.5°C and can be operated at a resolution +of 13 bits (0.0625°C) or 16 bits (0.0078°C). The sensor provides an INT pin to +indicate that a minimum or maximum temperature set point has been exceeded, as +well as a critical temperature (CT) pin to indicate that the critical +temperature set point has been exceeded. Both pins can be set up with a common +hysteresis of 0°C - 15°C and a fault queue, ranging from 1 to 4 events. Both +pins can individually set to be active-low or active-high, while the whole +device can either run in comparator mode or interrupt mode. The ADT7410 +supports continous temperature sampling, as well as sampling one temperature +value per second or even justget one sample on demand for power saving. +Besides, it can completely power down its ADC, if power management is +required. + +Configuration Notes +------------------- + +Since the device uses one hysteresis value, which is an offset to minimum, +maximum and critical temperature, it can only be set for temp#_max_hyst. +However, temp#_min_hyst and temp#_crit_hyst show their corresponding +hysteresis. +The device is set to 16 bit resolution and comparator mode. + +sysfs-Interface +--------------- + +temp#_input - temperature input +temp#_min - temperature minimum setpoint +temp#_max - temperature maximum setpoint +temp#_crit - critical temperature setpoint +temp#_min_hyst - hysteresis for temperature minimum (read-only) +temp#_max_hyst - hysteresis for temperature maximum (read/write) +temp#_crit_hyst - hysteresis for critical temperature (read-only) +temp#_min_alarm - temperature minimum alarm flag +temp#_max_alarm - temperature maximum alarm flag +temp#_crit_alarm - critical temperature alarm flag |