1 Kernel driver mc13783-adc
2 =========================
5 * Freescale Atlas MC13783
7 Datasheet: http://www.freescale.com/files/rf_if/doc/data_sheet/MC13783.pdf?fsrch=1
10 Sascha Hauer <s.hauer@pengutronix.de>
11 Luotao Fu <l.fu@pengutronix.de>
16 The Freescale MC13783 is a Power Management and Audio Circuit. Among
17 other things it contains a 10-bit A/D converter. The converter has 16
18 channels which can be used in different modes.
19 The A/D converter has a resolution of 2.25mV. Channels 0-4 have
20 a dedicated meaning with chip internal scaling applied. Channels 5-7
21 can be used as general purpose inputs or alternatively in a dedicated
22 mode. Channels 12-15 are occupied by the touchscreen if it's active.
24 Currently the driver only supports channels 2 and 5-15 with no alternative
25 modes for channels 5-7.
27 See this table for the meaning of the different channels and their chip
30 Channel Signal Input Range Scaling
31 -------------------------------------------------------------------------------
32 0 Battery Voltage (BATT) 2.50 - 4.65V -2.40V
33 1 Battery Current (BATT - BATTISNS) -50 - 50 mV x20
34 2 Application Supply (BP) 2.50 - 4.65V -2.40V
35 3 Charger Voltage (CHRGRAW) 0 - 10V / /5
37 4 Charger Current (CHRGISNSP-CHRGISNSN) -0.25V - 0.25V x4
38 5 General Purpose ADIN5 / Battery Pack Thermistor 0 - 2.30V No
39 6 General Purpose ADIN6 / Backup Voltage (LICELL) 0 - 2.30V / No /
41 7 General Purpose ADIN7 / UID / Die Temperature 0 - 2.30V / No /
43 8 General Purpose ADIN8 0 - 2.30V No
44 9 General Purpose ADIN9 0 - 2.30V No
45 10 General Purpose ADIN10 0 - 2.30V No
46 11 General Purpose ADIN11 0 - 2.30V No
47 12 General Purpose TSX1 / Touchscreen X-plate 1 0 - 2.30V No
48 13 General Purpose TSX2 / Touchscreen X-plate 2 0 - 2.30V No
49 14 General Purpose TSY1 / Touchscreen Y-plate 1 0 - 2.30V No
50 15 General Purpose TSY2 / Touchscreen Y-plate 2 0 - 2.30V No