[Kernel][02/02][N7100 N7105 R950] Perseus

原帖地址 http://forum.xda-developers.com/showthread.php?t=1927852
感谢AndreiLux更新
Perseus alpha32 (29/01):
Charging control implemented. This is my own version.

Charging currents:充电电流
Charging currents are dictated by input and charging current limits. The input current is the current flowing into the device through the USB port at 5V. The charging current is the current delivered to the battery at usually 4.35V. The device can have a higher charging current than input current because of the voltage differential, usually a 15% discrepancy. You can also have much higher input currents than charging currents, this can be useful when you are using the device in situations like gaming and charging your battery at the same time, provided your charger actually can provide the power.
There are 3 USB charger type categories: DCP / Dedicated Charging Ports which also includes AC chargers, but also special USB plugs; SDP / Standard Downstream Ports which usually includes almost all data enabled USB ports, and CDP / Charging Downstream Ports which includes also data enabled USB ports but which are designed to provide more power, usually on newer laptops where the USB port has a lightning logo next to it. More info here. - Technical explanation here.

Charging logic:充电逻辑
Stable margin removal option. The charger chip is capable of detecting unstable charging sources; it dynamically reduces the input current in 100mA steps until it detects a stable voltage input [We don't have the charger chip datasheet, so the technical explanation is a bit blurry here on how it decides that it's unstable]. It further reduces it by 100mA as a safety margin, you can disable this now.
Complete disabling of unstable power detection. This simply ignores unstable power sources and leaves the input current limit at its set up value. This will fix charging problems people have been reporting. However, please use it at your own risk, the S3 chargers which have had these symptoms clearly have some issue in their hardware so you might actually kill them with this option enabled as there is no protection from the phone's side anymore.

The actual input current limit can be read out in /sys/devices/platform/Samsung-battery/power_supply/battery/current_max, so you can see the real limit there, it's the closest thing we have to the actual charging current on stock values since there is no hardware to read out the live currents.

Voltage control:电压控制
Hard voltage control: 4.20, 4.35V, and 4.40V charging voltages are available. This is included for anybody running on third-party batteries, whom most of them have a 3.7V battery chemistry as opposed to the 3.8V on the stock battery. These batteries should be charged at 4.2V instead of 4.35V.
Soft voltage control: As opposed to the hard voltage control which is the voltage which the charger chip provides to the battery while charging, the soft-voltage is the battery voltage itself. 3.7V batteries have a top-off voltage of 4.2V and 3.8V again 4.35V. The default limit on the stock battery is 4.30V before the charger logic stops and considers the battery as full. This is also merely provided for 3rd party batteries which should be charged at lower voltages. If you overcharge your battery beyond these what are safe considered voltages, such as raising the default 4.30 top-off voltage to the design 4.35V or even higher, you are running into the risk of damaging the battery or even causing it to melt-down. Use at your own discretion.
mDNIe sharpness and RGB/YCM chroma saturation control in STweaks:

I started implementing sharpness control in STweaks and went a bit over-board instead of a simple checkbox; You now have controls over the mDNIe registers as a delta offset value compared to the stock register values. I'm applying the offset to all mDNIe profiles and scenarios which have the specific post-processing effect active in that specific scenario. Meaning, that you start with the default profile; Dynamic / Standard / Natural / Movie and have the delta offset applied on top of that.
Sharpness delta. This is what brought most of the quality difference in hardcore's original tweaks. You can now fine-tune it to your own taste, and also take into regard that it produces a different effect for each screen profile while having the same delta - the base values between the profiles are different.
DE control - I don't know what this actually does and I couldn't discern much difference between the values, but it used to be disabled in hardcore's tweaks.
Chroma saturation control: This is composed of 2 values for each RGB/YCM channel. See the Munsell color system for a visual representation of the values controlled here. The chroma curve control describes the curve weight based on chroma intensity, the chroma gain is the chromatic gain that is being applied on the respective channel. Chromatic saturation weight is again another multiplier for all channels combined. I have not managed to properly identify the chroma grey threshold and its effects.

Basically this is like an RGB control on steroids, and enables you to tune your screen to your own liking and calibrate it as you wish. Please note that not all scenarios in the profiles have chroma saturation effects, the Movie profile for example has no effect applied to the UI so chromatic control has no effect on it.

I also want to state that the above are my deductions and theories on the descriptions of these controls, I'm not familiar enough on colour theory to be able to confidently say that these descriptions are correct, and the controls are a work-in-progress for now. Experts are welcome to contribute here.
Front buffer early suspend delay option for those who have issues with the CRT animation.
Did some refactoring on the Mali drivers and fixed a bug which may have caused less capable undervolting than the stock implementation.



下载地址
http://pan.baidu.com/share/link?shareid=236562&uk=1897407771

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