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

1	Maxim MAX197 driver
2	===================
3	
4	Author:
5	  * Vivien Didelot <vivien.didelot@savoirfairelinux.com>
6	
7	Supported chips:
8	  * Maxim MAX197
9	    Prefix: 'max197'
10	    Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX197.pdf
11	
12	  * Maxim MAX199
13	    Prefix: 'max199'
14	    Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX199.pdf
15	
16	Description
17	-----------
18	
19	The A/D converters MAX197, and MAX199 are both 8-Channel, Multi-Range, 5V,
20	12-Bit DAS with 8+4 Bus Interface and Fault Protection.
21	
22	The available ranges for the MAX197 are {0,-5V} to 5V, and {0,-10V} to 10V,
23	while they are {0,-2V} to 2V, and {0,-4V} to 4V on the MAX199.
24	
25	Platform data
26	-------------
27	
28	The MAX197 platform data (defined in linux/platform_data/max197.h) should be
29	filled with a pointer to a conversion function, defined like:
30	
31	    int convert(u8 ctrl);
32	
33	ctrl is the control byte to write to start a new conversion.
34	On success, the function must return the 12-bit raw value read from the chip,
35	or a negative error code otherwise.
36	
37	Control byte format:
38	
39	Bit     Name       Description
40	7,6     PD1,PD0    Clock and Power-Down modes
41	5       ACQMOD     Internal or External Controlled Acquisition
42	4       RNG        Full-scale voltage magnitude at the input
43	3       BIP        Unipolar or Bipolar conversion mode
44	2,1,0   A2,A1,A0   Channel
45	
46	Sysfs interface
47	---------------
48	
49	* in[0-7]_input: The conversion value for the corresponding channel.
50	                 RO
51	
52	* in[0-7]_min:   The lower limit (in mV) for the corresponding channel.
53	                 For the MAX197, it will be adjusted to -10000, -5000, or 0.
54	                 For the MAX199, it will be adjusted to -4000, -2000, or 0.
55	                 RW
56	
57	* in[0-7]_max:   The higher limit (in mV) for the corresponding channel.
58	                 For the MAX197, it will be adjusted to 0, 5000, or 10000.
59	                 For the MAX199, it will be adjusted to 0, 2000, or 4000.
60	                 RW
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