linux-kernel - Re: [PATCH v1 1/1] drm/ili9341: Remove the duplicative driver

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Date: Mon, 29 Apr 2024 15:19:50 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Maxime Ripard <mripard@...nel.org>
Cc: linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
	Noralf Trønnes <noralf@...nnes.org>,
	David Lechner <dlechner@...libre.com>, Helge Deller <deller@....de>,
	linux-fbdev@...r.kernel.org
Subject: Re: [PATCH v1 1/1] drm/ili9341: Remove the duplicative driver

On Mon, Apr 29, 2024 at 01:39:06PM +0200, Maxime Ripard wrote:
> On Thu, Apr 25, 2024 at 06:04:50PM +0300, Andy Shevchenko wrote:
> > On Thu, Apr 25, 2024 at 04:58:06PM +0200, Maxime Ripard wrote:
> > > On Thu, Apr 25, 2024 at 03:42:07PM +0300, Andy Shevchenko wrote:
> > > > First of all, the driver was introduced when it was already
> > > > two drivers available for Ilitek 9341 panels.
> > > > 
> > > > Second, the most recent (fourth!) driver has incorporated this one
> > > > and hence, when enabled, it covers the provided functionality.
> > > > 
> > > > Taking into account the above, remove duplicative driver and make
> > > > maintenance and support eaiser for everybody.
> > > > 
> > > > Also see discussion [1] for details about Ilitek 9341 duplication
> > > > code.
> > > > 
> > > > Link: https://lore.kernel.org/r/ZXM9pG-53V4S8E2H@smile.fi.intel.com [1]
> > > > Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> > > 
> > > I think it should be the other way around and we should remove the
> > > mipi-dbi handling from panel/panel-ilitek-ili9341.c
> > 
> > Then please do it! I whining already for a few years about this.
> 
> I have neither the hardware nor the interest to do so. Seems it looks
> like you have plenty of the latter at least, I'm sure you'll find some
> time to tackle this.

Hmm... Since the use of Arduino part in panel IliTek 9341 is clarified
in this thread, I won't use that, but I have no time to clean up the mess
in DRM in the nearest future, sorry. And TBH it seems you, guys, know much
better what you want.

FYI:
The drivers/gpu/drm/tiny/mi0283qt.c works for me (the plenty of the HW
you referred to).

TL;DR: consider this as a (bug/feature/cleanup) report.

-- 
With Best Regards,
Andy Shevchenko