1Kernel driver mc13783-adc
2=========================
3
4Supported chips:
5  * Freescale Atlas MC13783
6    Prefix: 'mc13783'
7    Datasheet: http://www.freescale.com/files/rf_if/doc/data_sheet/MC13783.pdf?fsrch=1
8  * Freescale Atlas MC13892
9    Prefix: 'mc13892'
10    Datasheet: http://cache.freescale.com/files/analog/doc/data_sheet/MC13892.pdf?fsrch=1&sr=1
11
12Authors:
13    Sascha Hauer <s.hauer@pengutronix.de>
14    Luotao Fu <l.fu@pengutronix.de>
15
16Description
17-----------
18
19The Freescale MC13783 and MC13892 are Power Management and Audio Circuits.
20Among other things they contain a 10-bit A/D converter. The converter has 16
21(MC13783) resp. 12 (MC13892) channels which can be used in different modes. The
22A/D converter has a resolution of 2.25mV.
23
24Some channels can be used as General Purpose inputs or in a dedicated mode with
25a chip internal scaling applied .
26
27Currently the driver only supports the Application Supply channel (BP / BPSNS),
28the General Purpose inputs and touchscreen.
29
30See the following tables for the meaning of the different channels and their
31chip internal scaling:
32
33MC13783:
34Channel	Signal						Input Range	Scaling
35-------------------------------------------------------------------------------
360	Battery Voltage (BATT)				2.50 - 4.65V	-2.40V
371	Battery Current (BATT - BATTISNS)		-50 - 50 mV	x20
382	Application Supply (BP)				2.50 - 4.65V	-2.40V
393	Charger Voltage (CHRGRAW)			0 - 10V /	/5
40							0 - 20V		/10
414	Charger Current (CHRGISNSP-CHRGISNSN)		-0.25 - 0.25V	x4
425	General Purpose ADIN5 / Battery Pack Thermistor	0 - 2.30V	No
436	General Purpose ADIN6 / Backup Voltage (LICELL)	0 - 2.30V /	No /
44							1.50 - 3.50V	-1.20V
457	General Purpose ADIN7 / UID / Die Temperature	0 - 2.30V /	No /
46							0 - 2.55V /	x0.9 / No
478	General Purpose ADIN8				0 - 2.30V	No
489	General Purpose ADIN9				0 - 2.30V	No
4910	General Purpose ADIN10				0 - 2.30V	No
5011	General Purpose ADIN11				0 - 2.30V	No
5112	General Purpose TSX1 / Touchscreen X-plate 1	0 - 2.30V	No
5213	General Purpose TSX2 / Touchscreen X-plate 2	0 - 2.30V	No
5314	General Purpose TSY1 / Touchscreen Y-plate 1	0 - 2.30V	No
5415	General Purpose TSY2 / Touchscreen Y-plate 2	0 - 2.30V	No
55
56MC13892:
57Channel	Signal						Input Range	Scaling
58-------------------------------------------------------------------------------
590	Battery Voltage (BATT)				0 - 4.8V	/2
601	Battery Current (BATT - BATTISNSCC)		-60 - 60 mV	x20
612	Application Supply (BPSNS)			0 - 4.8V	/2
623	Charger Voltage (CHRGRAW)			0 - 12V /	/5
63							0 - 20V		/10
644	Charger Current (CHRGISNS-BPSNS) /		-0.3 - 0.3V /	x4 /
65	Touchscreen X-plate 1				0 - 2.4V	No
665	General Purpose ADIN5 /	Battery Pack Thermistor	0 - 2.4V	No
676	General Purpose ADIN6 / Backup Voltage (LICELL)	0 - 2.4V /	No
68	Backup Voltage (LICELL)                        	0 - 3.6V	x2/3
697	General Purpose ADIN7 / UID / Die Temperature	0 - 2.4V /	No /
70							0 - 4.8V	/2
7112	General Purpose TSX1 / Touchscreen X-plate 1	0 - 2.4V	No
7213	General Purpose TSX2 / Touchscreen X-plate 2	0 - 2.4V	No
7314	General Purpose TSY1 / Touchscreen Y-plate 1	0 - 2.4V	No
7415	General Purpose TSY2 / Touchscreen Y-plate 2	0 - 2.4V	No
75