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 Luotao Fu 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