Hi, I think some of the information that you are looking for might be proprietary. For almost anything MSM related, a good place to start is codeaurora.
Some platforms do use the standalone ICs (bq27xxx) https://www.codeaurora.org/gitweb/quic/le/?p=kernel/msm.git;a=commitdiff;h=339f30bc1ad4adaf3a05fae0abd21cc3afab6c44 You can check your defconfig to see which of the "CONFIG_BATTERY_XXX" are being used. For the battery related RPC, you can check the code here: https://www.codeaurora.org/gitweb/quic/le/?p=kernel/msm.git;a=blob;f=drivers/power/msm_battery.c;h=055539934e4ea247b56bec7b70c28fa04d37ff57;hb=98f5fd413f051db8407a53f583a46a1c3fb99657 As for the RPC operation itself, you can see the code on linux side from arch/arm/mach-msm. It's a bit hard to parse.. On Dec 27 2011, 2:34 pm, Pei Wang <uraj...@gmail.com> wrote: > Hi, > > I am now trying to do something to make the kernel be better at > tracking energy consumption, and I am using HTC Incredible 2 as my > development device. However, I got confused when dealing with MSM > platform. I just cannot understand how MSM chipsets implement battery > fuel gauge. It seems that phones based on MSM processors do not use > any individual fuel gauge IC such as MAX17042 or DS2784. I guess that > MSM processors have their own fuel gauge IC integrated in the > chipsets, and communicate with these IC via MSM RPC, but I am not sure > for this. In fact, I don't know what MSM RPC is and how it works > either. > > So in sum my question is how MSM based phone sense battery voltage and > current? Besides that, materials introducing MSM RPC will also be > helpful. Can anybody give me some instructions on how to get the > answer? Thanks in advance. > > Best Regards, > Pei Wang -- unsubscribe: android-kernel+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-kernel
