projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 0070bddf | 1 | Kernel driver twl4030-madc |
| b04f2f7d | 2 | ========================== |
| 0070bddf K |
3 | |
| 4 | Supported chips: | |
| b04f2f7d | 5 | |
| 0070bddf | 6 | * Texas Instruments TWL4030 |
| b04f2f7d | 7 | |
| 0070bddf K |
8 | Prefix: 'twl4030-madc' |
| 9 | ||
| 10 | ||
| 11 | Authors: | |
| 12 | J Keerthy <j-keerthy@ti.com> | |
| 13 | ||
| 14 | Description | |
| 15 | ----------- | |
| 16 | ||
| 17 | The Texas Instruments TWL4030 is a Power Management and Audio Circuit. Among | |
| 18 | other things it contains a 10-bit A/D converter MADC. The converter has 16 | |
| 19 | channels which can be used in different modes. | |
| 20 | ||
| 21 | ||
| 22 | See this table for the meaning of the different channels | |
| 23 | ||
| b04f2f7d | 24 | ======= ========================================================== |
| 0070bddf | 25 | Channel Signal |
| b04f2f7d | 26 | ======= ========================================================== |
| 0070bddf K |
27 | 0 Battery type(BTYPE) |
| 28 | 1 BCI: Battery temperature (BTEMP) | |
| 29 | 2 GP analog input | |
| 30 | 3 GP analog input | |
| 31 | 4 GP analog input | |
| 32 | 5 GP analog input | |
| 33 | 6 GP analog input | |
| 34 | 7 GP analog input | |
| 35 | 8 BCI: VBUS voltage(VBUS) | |
| 36 | 9 Backup Battery voltage (VBKP) | |
| 37 | 10 BCI: Battery charger current (ICHG) | |
| 38 | 11 BCI: Battery charger voltage (VCHG) | |
| 39 | 12 BCI: Main battery voltage (VBAT) | |
| 40 | 13 Reserved | |
| 41 | 14 Reserved | |
| 42 | 15 VRUSB Supply/Speaker left/Speaker right polarization level | |
| b04f2f7d | 43 | ======= ========================================================== |
| 0070bddf K |
44 | |
| 45 | ||
| 46 | The Sysfs nodes will represent the voltage in the units of mV, | |
| 47 | the temperature channel shows the converted temperature in | |
| 4d7e47bc | 48 | degree Celsius. The Battery charging current channel represents |
| 0070bddf | 49 | battery charging current in mA. |