| Luotao Fu | 93ee0a7 | 2009-12-09 20:35:58 +0100 | [diff] [blame] | 1 | Kernel driver mc13783-adc |
| 2 | ========================= |
| 3 | |
| 4 | Supported chips: |
| 5 | * Freescale Atlas MC13783 |
| Uwe Kleine-Koenig | 0c27321 | 2012-03-23 10:02:19 +0100 | [diff] [blame] | 6 | Prefix: 'mc13783' |
| Luotao Fu | 93ee0a7 | 2009-12-09 20:35:58 +0100 | [diff] [blame] | 7 | Datasheet: http://www.freescale.com/files/rf_if/doc/data_sheet/MC13783.pdf?fsrch=1 |
| Uwe Kleine-Koenig | 0c27321 | 2012-03-23 10:02:19 +0100 | [diff] [blame] | 8 | * Freescale Atlas MC13892 |
| 9 | Prefix: 'mc13892' |
| 10 | Datasheet: http://cache.freescale.com/files/analog/doc/data_sheet/MC13892.pdf?fsrch=1&sr=1 |
| Luotao Fu | 93ee0a7 | 2009-12-09 20:35:58 +0100 | [diff] [blame] | 11 | |
| 12 | Authors: |
| 13 | Sascha Hauer <s.hauer@pengutronix.de> |
| 14 | Luotao Fu <l.fu@pengutronix.de> |
| 15 | |
| 16 | Description |
| 17 | ----------- |
| 18 | |
| Uwe Kleine-Koenig | 0c27321 | 2012-03-23 10:02:19 +0100 | [diff] [blame] | 19 | The Freescale MC13783 and MC13892 are Power Management and Audio Circuits. |
| 20 | Among 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 |
| 22 | A/D converter has a resolution of 2.25mV. |
| Luotao Fu | 93ee0a7 | 2009-12-09 20:35:58 +0100 | [diff] [blame] | 23 | |
| Uwe Kleine-Koenig | 0c27321 | 2012-03-23 10:02:19 +0100 | [diff] [blame] | 24 | Some channels can be used as General Purpose inputs or in a dedicated mode with |
| 25 | a chip internal scaling applied . |
| Luotao Fu | 93ee0a7 | 2009-12-09 20:35:58 +0100 | [diff] [blame] | 26 | |
| Uwe Kleine-Koenig | 0c27321 | 2012-03-23 10:02:19 +0100 | [diff] [blame] | 27 | Currently the driver only supports the Application Supply channel (BP / BPSNS), |
| 28 | the General Purpose inputs and touchscreen. |
| Luotao Fu | 93ee0a7 | 2009-12-09 20:35:58 +0100 | [diff] [blame] | 29 | |
| Uwe Kleine-Koenig | 0c27321 | 2012-03-23 10:02:19 +0100 | [diff] [blame] | 30 | See the following tables for the meaning of the different channels and their |
| 31 | chip internal scaling: |
| 32 | |
| 33 | MC13783: |
| Luotao Fu | 93ee0a7 | 2009-12-09 20:35:58 +0100 | [diff] [blame] | 34 | Channel Signal Input Range Scaling |
| 35 | ------------------------------------------------------------------------------- |
| 36 | 0 Battery Voltage (BATT) 2.50 - 4.65V -2.40V |
| 37 | 1 Battery Current (BATT - BATTISNS) -50 - 50 mV x20 |
| 38 | 2 Application Supply (BP) 2.50 - 4.65V -2.40V |
| 39 | 3 Charger Voltage (CHRGRAW) 0 - 10V / /5 |
| 40 | 0 - 20V /10 |
| Uwe Kleine-Koenig | 0c27321 | 2012-03-23 10:02:19 +0100 | [diff] [blame] | 41 | 4 Charger Current (CHRGISNSP-CHRGISNSN) -0.25 - 0.25V x4 |
| Luotao Fu | 93ee0a7 | 2009-12-09 20:35:58 +0100 | [diff] [blame] | 42 | 5 General Purpose ADIN5 / Battery Pack Thermistor 0 - 2.30V No |
| 43 | 6 General Purpose ADIN6 / Backup Voltage (LICELL) 0 - 2.30V / No / |
| 44 | 1.50 - 3.50V -1.20V |
| 45 | 7 General Purpose ADIN7 / UID / Die Temperature 0 - 2.30V / No / |
| 46 | 0 - 2.55V / x0.9 / No |
| 47 | 8 General Purpose ADIN8 0 - 2.30V No |
| 48 | 9 General Purpose ADIN9 0 - 2.30V No |
| 49 | 10 General Purpose ADIN10 0 - 2.30V No |
| 50 | 11 General Purpose ADIN11 0 - 2.30V No |
| 51 | 12 General Purpose TSX1 / Touchscreen X-plate 1 0 - 2.30V No |
| 52 | 13 General Purpose TSX2 / Touchscreen X-plate 2 0 - 2.30V No |
| 53 | 14 General Purpose TSY1 / Touchscreen Y-plate 1 0 - 2.30V No |
| 54 | 15 General Purpose TSY2 / Touchscreen Y-plate 2 0 - 2.30V No |
| Uwe Kleine-Koenig | 0c27321 | 2012-03-23 10:02:19 +0100 | [diff] [blame] | 55 | |
| 56 | MC13892: |
| 57 | Channel Signal Input Range Scaling |
| 58 | ------------------------------------------------------------------------------- |
| 59 | 0 Battery Voltage (BATT) 0 - 4.8V /2 |
| 60 | 1 Battery Current (BATT - BATTISNSCC) -60 - 60 mV x20 |
| 61 | 2 Application Supply (BPSNS) 0 - 4.8V /2 |
| 62 | 3 Charger Voltage (CHRGRAW) 0 - 12V / /5 |
| 63 | 0 - 20V /10 |
| 64 | 4 Charger Current (CHRGISNS-BPSNS) / -0.3 - 0.3V / x4 / |
| 65 | Touchscreen X-plate 1 0 - 2.4V No |
| 66 | 5 General Purpose ADIN5 / Battery Pack Thermistor 0 - 2.4V No |
| 67 | 6 General Purpose ADIN6 / Backup Voltage (LICELL) 0 - 2.4V / No |
| 68 | Backup Voltage (LICELL) 0 - 3.6V x2/3 |
| 69 | 7 General Purpose ADIN7 / UID / Die Temperature 0 - 2.4V / No / |
| 70 | 0 - 4.8V /2 |
| 71 | 12 General Purpose TSX1 / Touchscreen X-plate 1 0 - 2.4V No |
| 72 | 13 General Purpose TSX2 / Touchscreen X-plate 2 0 - 2.4V No |
| 73 | 14 General Purpose TSY1 / Touchscreen Y-plate 1 0 - 2.4V No |
| 74 | 15 General Purpose TSY2 / Touchscreen Y-plate 2 0 - 2.4V No |