On 05/04/2014 01:17 AM, Greg KH wrote:
On Fri, Apr 11, 2014 at 01:48:28PM +0200, Tomasz Stanislawski wrote:
Hi everyone,
This patchset adds support for sii9234 HD Mobile Link Bridge. The chip is
used
to convert HDMI signal into MHL. The driver enables HDMI output on Trats and
Trats2 boards.
The code is based on the driver [1] developed by:
Adam Hampson ahamp...@sta.samsung.com
Erik Gilling konk...@android.com
with additional contributions from:
Shankar Bandal shanka...@samsung.com
Dharam Kumar dharam...@samsung.com
The drivers architecture was greatly simplified and transformed into a form
accepted (hopefully) by opensource community. The main differences from
original code are:
* using single I2C client instead of 4 subclients
* remove all logic non-related to establishing HDMI link
* simplify error handling
* rewrite state machine in interrupt handler
* wakeup and discovery triggered by an extcon event
* integrate with Device Tree
For now, the driver is added to drivers/misc/ directory because it has
neigher
userspace nor kernel interface. The chip is capable of receiving and
processing CEC events, so the driver may export an input device in /dev/ in
the
future. However CEC could be also handled by HDMI driver.
I kindly ask for suggestions about the best location for this driver.
It really is an extcon driver, so why not put it in drivers/extcon? And
that might solve any build issues you have if you don't select extcon in
your .config file and try to build this code :)
thanks,
Hi Greg,
Thank you for your comments.
As I understand, drivers/extcon contains only extcon providers.
This driver is an extcon client, so mentioned location may not be adequate.
I am surprised that there are no comments about this driver.
Sii9234 chip is present on many exynos based boards/phones
and HDMI subsystem will not work without this code.
Regards,
Tomasz Stanislawski
greg k-h
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