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Based on kernel version 3.15.4. Page generated on 2014-07-07 09:03 EST.

1	Kernel driver ltc2945
2	=====================
3	
4	Supported chips:
5	  * Linear Technology LTC2945
6	    Prefix: 'ltc2945'
7	    Addresses scanned: -
8	    Datasheet:
9	        http://cds.linear.com/docs/en/datasheet/2945fa.pdf
10	
11	Author: Guenter Roeck <linux@roeck-us.net>
12	
13	
14	Description
15	-----------
16	
17	The LTC2945  is a rail-to-rail system monitor that measures current, voltage,
18	and power consumption.
19	
20	
21	Usage Notes
22	-----------
23	
24	This driver does not probe for LTC2945 devices, since there is no register
25	which can be safely used to identify the chip. You will have to instantiate
26	the devices explicitly.
27	
28	Example: the following will load the driver for an LTC2945 at address 0x10
29	on I2C bus #1:
30	$ modprobe ltc2945
31	$ echo ltc2945 0x10 > /sys/bus/i2c/devices/i2c-1/new_device
32	
33	
34	Sysfs entries
35	-------------
36	
37	Voltage readings provided by this driver are reported as obtained from the ADC
38	registers. If a set of voltage divider resistors is installed, calculate the
39	real voltage by multiplying the reported value with (R1+R2)/R2, where R1 is the
40	value of the divider resistor against the measured voltage and R2 is the value
41	of the divider resistor against Ground.
42	
43	Current reading provided by this driver is reported as obtained from the ADC
44	Current Sense register. The reported value assumes that a 1 mOhm sense resistor
45	is installed. If a different sense resistor is installed, calculate the real
46	current by dividing the reported value by the sense resistor value in mOhm.
47	
48	in1_input		VIN voltage (mV). Voltage is measured either at
49				SENSE+ or VDD pin depending on chip configuration.
50	in1_min			Undervoltage threshold
51	in1_max			Overvoltage threshold
52	in1_lowest		Lowest measured voltage
53	in1_highest		Highest measured voltage
54	in1_reset_history	Write 1 to reset in1 history
55	in1_min_alarm		Undervoltage alarm
56	in1_max_alarm		Overvoltage alarm
57	
58	in2_input		ADIN voltage (mV)
59	in2_min			Undervoltage threshold
60	in2_max			Overvoltage threshold
61	in2_lowest		Lowest measured voltage
62	in2_highest		Highest measured voltage
63	in2_reset_history	Write 1 to reset in2 history
64	in2_min_alarm		Undervoltage alarm
65	in2_max_alarm		Overvoltage alarm
66	
67	curr1_input		SENSE current (mA)
68	curr1_min		Undercurrent threshold
69	curr1_max		Overcurrent threshold
70	curr1_lowest		Lowest measured current
71	curr1_highest		Highest measured current
72	curr1_reset_history	Write 1 to reset curr1 history
73	curr1_min_alarm		Undercurrent alarm
74	curr1_max_alarm		Overcurrent alarm
75	
76	power1_input		Power (in uW). Power is calculated based on SENSE+/VDD
77				voltage or ADIN voltage depending on chip configuration.
78	power1_min		Low lower threshold
79	power1_max		High power threshold
80	power1_input_lowest	Historical minimum power use
81	power1_input_highest	Historical maximum power use
82	power1_reset_history	Write 1 to reset power1 history
83	power1_min_alarm	Low power alarm
84	power1_max_alarm	High power alarm
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