[PATCH v7 2/2] video: backlight: support s6e8ax0 panel driver based on MIPI DSI

[jg1.han@samsung.com (Jingoo Han)]

Hi, Inki Dae.
> -----Original Message-----
> From: linux-fbdev-owner at vger.kernel.org [mailto:linux-fbdev-owner at vger.kernel.org] On Behalf Of Inki
> Dae
> Sent: Friday, January 27, 2012 11:08 AM
> To: 'Tomi Valkeinen'; 'Donghwa Lee'
> Cc: linux-fbdev at vger.kernel.org; linux-arm-kernel at lists.infradead.org; 'Florian Tobias Schandinat';
> 'Andrew Morton'; rpurdie at linux.intel.com; kyungmin.park at samsung.com
> Subject: RE: [PATCH v7 2/2] video: backlight: support s6e8ax0 panel driver based on MIPI DSI
> 
> Hi, Tomi.
> 
> Below is my comments.
> 
> > -----Original Message-----
> > From: Tomi Valkeinen [mailto:tomi.valkeinen at ti.com]
> > Sent: Friday, January 27, 2012 12:53 AM
> > To: Donghwa Lee
> > Cc: linux-fbdev at vger.kernel.org; linux-arm-kernel at lists.infradead.org;
> > Florian Tobias Schandinat; Andrew Morton; rpurdie at linux.intel.com;
> > inki.dae at samsung.com; kyungmin.park at samsung.com
> > Subject: Re: [PATCH v7 2/2] video: backlight: support s6e8ax0 panel driver
> > based on MIPI DSI
> >
> > Hi,
> >
> > On Thu, 2012-01-19 at 14:28 +0900, Donghwa Lee wrote:
> > > This patch is amoled panel driver based MIPI DSI interface.
> > > S6E8AX0 means it may includes many other ldi controllers, for example,
> > > S6E8AA0, S6E8AB0, and so on.
> > >
> > > This patch can be modified depending on each panel properites. For
> > > example, second parameter of panel condition register can be changed
> > > depending on ldi controller or amoled type.
> > >
> > > Changes since v6:
> > > 	- change data type from const to static const
> > >
> > > Signed-off-by: Donghwa Lee <dh09.lee@samsung.com>
> > > Signed-off-by: Inki Dae <inki.dae@samsung.com>
> > > Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
> > > ---
> > >  drivers/video/backlight/Kconfig   |    7 +
> > >  drivers/video/backlight/Makefile  |    1 +
> > >  drivers/video/backlight/s6e8ax0.c |  898
> > +++++++++++++++++++++++++++++++++++++
> > >  drivers/video/backlight/s6e8ax0.h |   21 +
> > >  4 files changed, 927 insertions(+), 0 deletions(-)  create mode
> > > 100644 drivers/video/backlight/s6e8ax0.c  create mode 100644
> > > drivers/video/backlight/s6e8ax0.h
> >
> > Why is this in backlight directory? It's a panel driver, not a backlight
> > driver.
> >
> 
> Yes, right. this backlight driver is specific to our mipi dsi driver because this uses the interface
> of mipi dsi driver to send some commands to real lcd panel.
> 
> > And the driver is s5p specific, wouldn't a directory like
> > drivers/video/s5p/, where both the s5p DSI driver from the previous patch
> > and this panel driver could be?
> >
> 
> Ok, we will create new directory, "exynos" instead of "s5p" because our SoC chip doesn't use such
> prefix(s5p, and s3c) anymore. and also as you mentioned, we should working on a common DSI framework.
> do you have any plan for this?

I think so. New directory, "exynos" is necessary.
The "exynos" directory can include IPs such as MIPI, which are related to FB stack
and are used for exynos SoC series.

However, s3c-fb.c will remain in "drivers/video" directory, because s3c-fb.c can be
used for s3c24xx, s5p64xx SoC series as well as exynos series.

Thank you.
> 
> Thanks,
> Inki Dae.
> 
> >  Tomi
> 
> 
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