linux-kernel - Re: [PATCH 3/3] staging: fbtft: use pr

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Date:	Fri, 11 Sep 2015 16:08:48 +0530
From:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:	Noralf Trønnes <noralf@...nnes.org>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] staging: fbtft: use pr_fmt

On Thu, Sep 10, 2015 at 06:45:15PM +0200, Noralf Trønnes wrote:
> 
> 10.09.2015 06:54, skrev Sudip Mukherjee:
> >On Wed, Sep 09, 2015 at 11:20:08PM +0200, Noralf Trønnes wrote:
> >>Den 09.09.2015 20:35, skrev Greg Kroah-Hartman:
> >>>On Sat, Sep 05, 2015 at 07:13:45PM +0530, Sudip Mukherjee wrote:
> >>>>Instead of defining DRVNAME and using it in all calls to pr_* family of
> >>>>macros lets start using pr_fmt.
> >>>>
> >>>>Signed-off-by: Sudip Mukherjee <sudip@...torindia.org>
> >>>>---
> >>>>  drivers/staging/fbtft/fbtft_device.c | 79 ++++++++++++++++--------------------
> >>>>  1 file changed, 35 insertions(+), 44 deletions(-)
> >>[...]
> >>
<snip>
> >Is this driver only for Raspberry Pi?
> >I have seen someone submitted a drm driver for Raspberry Pi. And I guess
> >that is already merged.
> >Tomi (fbdev maintainer) said "Fremebuffer  driver will be obsolete
> >immediately when there's a DRM driver for that device". And if a drm
> >driver is already there for Raspberry Pi then ?
> 
> Not sure what you refer to as driver here.
> 
> The fbtft module presents a simplistic view of fbdev through
> 'struct fbtft_par' which the various fbtft drivers use.
> 
> fbtft_device is just a kernel module that can add spi and platform
> devices to the kernel and it can be used on all platforms. It's not a
> driver of any kind. It really does what Device Tree does, it adds devices.
> 
> vc4 is an upcoming DRM driver for the BCM2835 display hardware (hdmi).
> This has nothing to do with the fbtft drivers which target SPI/parallel
> bus connected displays with onboard video memory.
Ok, Thanks for explaining. Since this is using calls to framebuffer I
thought this to be a framebuffer driver.
Anyways, I will modify the patch as suggested by Greg.

regards
sudip
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