1*7ebd8b66SMauro Carvalho ChehabKernel driver twl4030-madc 2*7ebd8b66SMauro Carvalho Chehab========================== 3*7ebd8b66SMauro Carvalho Chehab 4*7ebd8b66SMauro Carvalho ChehabSupported chips: 5*7ebd8b66SMauro Carvalho Chehab 6*7ebd8b66SMauro Carvalho Chehab * Texas Instruments TWL4030 7*7ebd8b66SMauro Carvalho Chehab 8*7ebd8b66SMauro Carvalho Chehab Prefix: 'twl4030-madc' 9*7ebd8b66SMauro Carvalho Chehab 10*7ebd8b66SMauro Carvalho Chehab 11*7ebd8b66SMauro Carvalho ChehabAuthors: 12*7ebd8b66SMauro Carvalho Chehab J Keerthy <j-keerthy@ti.com> 13*7ebd8b66SMauro Carvalho Chehab 14*7ebd8b66SMauro Carvalho ChehabDescription 15*7ebd8b66SMauro Carvalho Chehab----------- 16*7ebd8b66SMauro Carvalho Chehab 17*7ebd8b66SMauro Carvalho ChehabThe Texas Instruments TWL4030 is a Power Management and Audio Circuit. Among 18*7ebd8b66SMauro Carvalho Chehabother things it contains a 10-bit A/D converter MADC. The converter has 16 19*7ebd8b66SMauro Carvalho Chehabchannels which can be used in different modes. 20*7ebd8b66SMauro Carvalho Chehab 21*7ebd8b66SMauro Carvalho Chehab 22*7ebd8b66SMauro Carvalho ChehabSee this table for the meaning of the different channels 23*7ebd8b66SMauro Carvalho Chehab 24*7ebd8b66SMauro Carvalho Chehab======= ========================================================== 25*7ebd8b66SMauro Carvalho ChehabChannel Signal 26*7ebd8b66SMauro Carvalho Chehab======= ========================================================== 27*7ebd8b66SMauro Carvalho Chehab0 Battery type(BTYPE) 28*7ebd8b66SMauro Carvalho Chehab1 BCI: Battery temperature (BTEMP) 29*7ebd8b66SMauro Carvalho Chehab2 GP analog input 30*7ebd8b66SMauro Carvalho Chehab3 GP analog input 31*7ebd8b66SMauro Carvalho Chehab4 GP analog input 32*7ebd8b66SMauro Carvalho Chehab5 GP analog input 33*7ebd8b66SMauro Carvalho Chehab6 GP analog input 34*7ebd8b66SMauro Carvalho Chehab7 GP analog input 35*7ebd8b66SMauro Carvalho Chehab8 BCI: VBUS voltage(VBUS) 36*7ebd8b66SMauro Carvalho Chehab9 Backup Battery voltage (VBKP) 37*7ebd8b66SMauro Carvalho Chehab10 BCI: Battery charger current (ICHG) 38*7ebd8b66SMauro Carvalho Chehab11 BCI: Battery charger voltage (VCHG) 39*7ebd8b66SMauro Carvalho Chehab12 BCI: Main battery voltage (VBAT) 40*7ebd8b66SMauro Carvalho Chehab13 Reserved 41*7ebd8b66SMauro Carvalho Chehab14 Reserved 42*7ebd8b66SMauro Carvalho Chehab15 VRUSB Supply/Speaker left/Speaker right polarization level 43*7ebd8b66SMauro Carvalho Chehab======= ========================================================== 44*7ebd8b66SMauro Carvalho Chehab 45*7ebd8b66SMauro Carvalho Chehab 46*7ebd8b66SMauro Carvalho ChehabThe Sysfs nodes will represent the voltage in the units of mV, 47*7ebd8b66SMauro Carvalho Chehabthe temperature channel shows the converted temperature in 48*7ebd8b66SMauro Carvalho Chehabdegree Celsius. The Battery charging current channel represents 49*7ebd8b66SMauro Carvalho Chehabbattery charging current in mA. 50