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