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From: John Stultz <john.stultz@linaro.org>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: "David Lechner" <david@lechnology.com>,
	"Xinliang Liu" <xinliang.liu@linaro.org>,
	"Intel Graphics Development" <intel-gfx@lists.freedesktop.org>,
	dri-devel <dri-devel@lists.freedesktop.org>,
	"Noralf Trønnes" <noralf@tronnes.org>
Subject: Re: [PATCH v5 4/8] drm/cma-helper: Use the generic fbdev emulation
Date: Thu, 23 Aug 2018 14:12:46 -0700	[thread overview]
Message-ID: <CALAqxLVR8=ddbKhw-X-yoHpKEzLFTbckzTWdHz_FuTAg7Wr_iQ@mail.gmail.com> (raw)
In-Reply-To: <2601561.YhrFMFhLQ8@avalon>

On Thu, Aug 23, 2018 at 1:49 PM, Laurent Pinchart
<laurent.pinchart@ideasonboard.com> wrote:
> On Thursday, 23 August 2018 20:48:40 EEST John Stultz wrote:
>> On Thu, Aug 23, 2018 at 1:09 AM, Daniel Vetter <daniel@ffwll.ch> wrote:
>> > On Thu, Aug 23, 2018 at 10:46:15AM +0300, Laurent Pinchart wrote:
>> >> Possibly slightly out of topic, but we're in 2018, is there any plan to
>> >> make SurfaceFlinger move away from FBDEV ?
>> >
>> > Is surfaceflinger really using direct fbdev still (maybe for boot-up)? Or
>> > is this just an artifact of the mali blob hwcomposer backend?
>>
>> Mostly its due to the simple fbdev being a legacy solution on android
>> that works out of the box.
>> I do suspect the android devs hope to retire it, which is why I'm
>> working on getting things going w/ the drm_hwcomposer right now so we
>> can get away from the fbdev.
>
> That would be good news. Are there many Android components other than vendor-
> specific hwcomposer implementations that still use fbdev ?

So yea, I can't really speak about what the various vendors are doing,
as I don't really know, but I'm aware there are still a few (in some
cases major) vendors who still use fbdev on their shipping devices
with their custom hwcomposer code.

Other then that, to my knowledge AOSP only has a default fallback
hwcomposer that uses fbdev, which is what we've used here as we didn't
want to take the vendor's proprietary hwcomposer blob.  But again,
moving to the drm_hwcomposer is the shiny bright future, as soon as a
few remaining issues are sorted upstream.

thanks
-john
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  reply	other threads:[~2018-08-23 21:12 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-03 16:03 [PATCH v5 0/8] drm: Add generic fbdev emulation Noralf Trønnes
2018-07-03 16:03 ` [PATCH v5 1/8] drm: Begin an API for in-kernel clients Noralf Trønnes
2018-07-03 16:03 ` [PATCH v5 2/8] drm/fb-helper: Add generic fbdev emulation .fb_probe function Noralf Trønnes
2018-07-03 16:03 ` [PATCH v5 3/8] drm/pl111: Set .gem_prime_vmap and .gem_prime_mmap Noralf Trønnes
2018-07-03 16:03 ` [PATCH v5 4/8] drm/cma-helper: Use the generic fbdev emulation Noralf Trønnes
2018-08-21  6:44   ` John Stultz
2018-08-21  8:44     ` Daniel Vetter
2018-08-21 14:59       ` Noralf Trønnes
2018-08-21 15:41         ` Daniel Vetter
2018-08-21 16:03           ` Noralf Trønnes
2018-08-21 16:46             ` Daniel Vetter
2018-08-21 18:43         ` John Stultz
2018-08-22  7:56           ` Daniel Vetter
2018-08-21 14:15     ` Noralf Trønnes
2018-08-23  4:14     ` John Stultz
2018-08-23  5:51       ` Daniel Vetter
2018-08-23  6:21         ` John Stultz
2018-08-23  7:37           ` Daniel Vetter
2018-08-23 16:49             ` Noralf Trønnes
2018-08-23 17:15               ` Daniel Vetter
2018-08-23  7:46       ` Laurent Pinchart
2018-08-23  8:09         ` Daniel Vetter
2018-08-23 17:48           ` John Stultz
2018-08-23 20:49             ` Laurent Pinchart
2018-08-23 21:12               ` John Stultz [this message]
2018-08-24  8:57                 ` Laurent Pinchart
2018-08-23 17:38         ` John Stultz
2018-08-23 17:24       ` Ville Syrjälä
2018-08-23 17:42         ` John Stultz
2018-07-03 16:03 ` [PATCH v5 5/8] drm/debugfs: Add internal client debugfs file Noralf Trønnes
2018-07-03 16:03 ` [PATCH v5 6/8] drm/fb-helper: Finish the generic fbdev emulation Noralf Trønnes
2018-07-03 16:03 ` [PATCH v5 7/8] drm/tinydrm: Use drm_fbdev_generic_setup() Noralf Trønnes
2018-07-03 16:03 ` [PATCH v5 8/8] drm/cma-helper: Remove drm_fb_cma_fbdev_init_with_funcs() Noralf Trønnes
2018-07-03 16:15 ` ✗ Fi.CI.CHECKPATCH: warning for drm: Add generic fbdev emulation Patchwork
2018-07-03 16:18 ` ✗ Fi.CI.SPARSE: " Patchwork
2018-07-03 16:32 ` ✓ Fi.CI.BAT: success " Patchwork
2018-07-04  2:38 ` ✓ Fi.CI.IGT: " Patchwork
2018-07-04  8:19 ` [PATCH v5 0/8] " Daniel Vetter
2018-07-10 13:10 ` Noralf Trønnes
2018-08-23  6:25 ` ✗ Fi.CI.BAT: failure for drm: Add generic fbdev emulation (rev2) Patchwork

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