mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-30 16:13:54 +08:00
0c2732152a
Based on a patch by David Jander that mostly did s/mc13783/mc13xxx/ . Additionally use dev_get_drvdata instead of to_platform_device + platform_get_drvdata in mc13783_adc_read (spotted by Jean Delvare). Cc: David Jander <david.jander@protonic.nl> Signed-off-by: Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de> Signed-off-by: Jean Delvare <khali@linux-fr.org>
75 lines
3.0 KiB
Plaintext
75 lines
3.0 KiB
Plaintext
Kernel driver mc13783-adc
|
|
=========================
|
|
|
|
Supported chips:
|
|
* Freescale Atlas MC13783
|
|
Prefix: 'mc13783'
|
|
Datasheet: http://www.freescale.com/files/rf_if/doc/data_sheet/MC13783.pdf?fsrch=1
|
|
* Freescale Atlas MC13892
|
|
Prefix: 'mc13892'
|
|
Datasheet: http://cache.freescale.com/files/analog/doc/data_sheet/MC13892.pdf?fsrch=1&sr=1
|
|
|
|
Authors:
|
|
Sascha Hauer <s.hauer@pengutronix.de>
|
|
Luotao Fu <l.fu@pengutronix.de>
|
|
|
|
Description
|
|
-----------
|
|
|
|
The Freescale MC13783 and MC13892 are Power Management and Audio Circuits.
|
|
Among other things they contain a 10-bit A/D converter. The converter has 16
|
|
(MC13783) resp. 12 (MC13892) channels which can be used in different modes. The
|
|
A/D converter has a resolution of 2.25mV.
|
|
|
|
Some channels can be used as General Purpose inputs or in a dedicated mode with
|
|
a chip internal scaling applied .
|
|
|
|
Currently the driver only supports the Application Supply channel (BP / BPSNS),
|
|
the General Purpose inputs and touchscreen.
|
|
|
|
See the following tables for the meaning of the different channels and their
|
|
chip internal scaling:
|
|
|
|
MC13783:
|
|
Channel Signal Input Range Scaling
|
|
-------------------------------------------------------------------------------
|
|
0 Battery Voltage (BATT) 2.50 - 4.65V -2.40V
|
|
1 Battery Current (BATT - BATTISNS) -50 - 50 mV x20
|
|
2 Application Supply (BP) 2.50 - 4.65V -2.40V
|
|
3 Charger Voltage (CHRGRAW) 0 - 10V / /5
|
|
0 - 20V /10
|
|
4 Charger Current (CHRGISNSP-CHRGISNSN) -0.25 - 0.25V x4
|
|
5 General Purpose ADIN5 / Battery Pack Thermistor 0 - 2.30V No
|
|
6 General Purpose ADIN6 / Backup Voltage (LICELL) 0 - 2.30V / No /
|
|
1.50 - 3.50V -1.20V
|
|
7 General Purpose ADIN7 / UID / Die Temperature 0 - 2.30V / No /
|
|
0 - 2.55V / x0.9 / No
|
|
8 General Purpose ADIN8 0 - 2.30V No
|
|
9 General Purpose ADIN9 0 - 2.30V No
|
|
10 General Purpose ADIN10 0 - 2.30V No
|
|
11 General Purpose ADIN11 0 - 2.30V No
|
|
12 General Purpose TSX1 / Touchscreen X-plate 1 0 - 2.30V No
|
|
13 General Purpose TSX2 / Touchscreen X-plate 2 0 - 2.30V No
|
|
14 General Purpose TSY1 / Touchscreen Y-plate 1 0 - 2.30V No
|
|
15 General Purpose TSY2 / Touchscreen Y-plate 2 0 - 2.30V No
|
|
|
|
MC13892:
|
|
Channel Signal Input Range Scaling
|
|
-------------------------------------------------------------------------------
|
|
0 Battery Voltage (BATT) 0 - 4.8V /2
|
|
1 Battery Current (BATT - BATTISNSCC) -60 - 60 mV x20
|
|
2 Application Supply (BPSNS) 0 - 4.8V /2
|
|
3 Charger Voltage (CHRGRAW) 0 - 12V / /5
|
|
0 - 20V /10
|
|
4 Charger Current (CHRGISNS-BPSNS) / -0.3 - 0.3V / x4 /
|
|
Touchscreen X-plate 1 0 - 2.4V No
|
|
5 General Purpose ADIN5 / Battery Pack Thermistor 0 - 2.4V No
|
|
6 General Purpose ADIN6 / Backup Voltage (LICELL) 0 - 2.4V / No
|
|
Backup Voltage (LICELL) 0 - 3.6V x2/3
|
|
7 General Purpose ADIN7 / UID / Die Temperature 0 - 2.4V / No /
|
|
0 - 4.8V /2
|
|
12 General Purpose TSX1 / Touchscreen X-plate 1 0 - 2.4V No
|
|
13 General Purpose TSX2 / Touchscreen X-plate 2 0 - 2.4V No
|
|
14 General Purpose TSY1 / Touchscreen Y-plate 1 0 - 2.4V No
|
|
15 General Purpose TSY2 / Touchscreen Y-plate 2 0 - 2.4V No
|