Rework PLL calculations for Iron Lake

The limits were wrong in several places. Checked the sandy bridge, ivy
brige and haswell docs, they all say mostly the same.

- The value of p2 is either 7, 14, 5 or 10 depending on 1 bit in the
config register and on the display type. We can guess which values are
right according to the global P limit (5-80 when using 5/10,
28-something when using 14/7). The values are different because CRT
need a precise, but rather low pixel clock, while modern display
interface can accomodate being faster than required by a few MHz, but
need a much higher speed (the bits are transferred serially, so they
need to be at least 8 times faster than a DAC).

- The limits for N were obviously wrong, as the register is written with
N-2, so values less than 2 make no sense. Use 3-8 as specified in the
datasheet.

- The reference frequency (set by the driver) was wrong, too. It is
120MHz, not 96. It is 100MHz in some cases (FDI, etc), we should see
when this happens and switch to the right reference for PLL
computations.

- There was an attempt to minimize the value of N (a powersaving effort,
I guess?), but it would basically force the loop to stop at the first
value of N tested, resulting in way off timings in some cases.

- To ease testing and stop sending patches and syslogs back and forth
with vidrep, extract the "test mode" from pll.cpp into a proper test
executable, making it a little easier to experiment with the code and
fix the problems.

This should fix #13669 and possibly other cases of "out of range", black
screen, bad timings, etc.

Change-Id: Ic4c1c159701f352b7c1ef15a647f023c82ac26c
Reviewed-on: https://review.haiku-os.org/360
Reviewed-by: Axel Dörfler <axeld@pinc-software.de>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

* Started a very simple test application for the IMAP add-on.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42995 a95241bf-73f2-0310-859d-f6bbb57e9c96

Add a simple CLucene search app written by Ankur Sethi. I just made some smaller modifications. Don't look at the coding style, it is just for testing at the moment, this has to be integrate somewhere else anyway, there is no point to fix it at this state. There are also some memory leaks...



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39173 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added a small faking OpenGL renderer add-on as a testbed for direct
mode threading/drawing issue.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28834 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merged changes from branch build_system_redesign at revision 14573.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14574 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added test application for the task manager window.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13146 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added MusePack reader test to the build.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6132 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added translators subdir.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@688 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added add-ons test to the build.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@184 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Started a very simple test application for the IMAP add-on.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42995 a95241bf-73f2-0310-859d-f6bbb57e9c96

Add a simple CLucene search app written by Ankur Sethi. I just made some smaller modifications. Don't look at the coding style, it is just for testing at the moment, this has to be integrate somewhere else anyway, there is no point to fix it at this state. There are also some memory leaks...



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39173 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added a small faking OpenGL renderer add-on as a testbed for direct
mode threading/drawing issue.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28834 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merged changes from branch build_system_redesign at revision 14573.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14574 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added test application for the task manager window.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13146 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added MusePack reader test to the build.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6132 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added translators subdir.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@688 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added add-ons test to the build.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@184 a95241bf-73f2-0310-859d-f6bbb57e9c96