linux/Documentation/hwmon/mc13783-adc
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   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
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