From: David Hildenbrand <david@redhat.com>
To: Linus Walleij <linus.walleij@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux-MM <linux-mm@kvack.org>, Joel Stanley <joel@jms.id.au>,
David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
Andrew Jeffery <andrew@aj.id.au>,
Lucas Stach <l.stach@pengutronix.de>,
Russell King <linux+etnaviv@armlinux.org.uk>,
Christian Gmeiner <christian.gmeiner@gmail.com>,
Mike Rapoport <rppt@kernel.org>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
Michal Simek <michal.simek@xilinx.com>,
Masahiro Yamada <masahiroy@kernel.org>,
Randy Dunlap <rdunlap@infradead.org>,
Peter Collingbourne <pcc@google.com>,
linux-aspeed <linux-aspeed@lists.ozlabs.org>,
dri-devel <dri-devel@lists.freedesktop.org>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
The etnaviv authors <etnaviv@lists.freedesktop.org>,
Linux Fbdev development list <linux-fbdev@vger.kernel.org>
Subject: Re: [PATCH v1 2/2] drivers/gpu/drm: don't select DMA_CMA or CMA from aspeed or etnaviv
Date: Thu, 8 Apr 2021 18:44:23 +0200 [thread overview]
Message-ID: <2ef3b65c-c0ef-7bbe-0e05-39ee8f2bae48@redhat.com> (raw)
In-Reply-To: <CACRpkdYizKGhtYzE+22oZAduLNCOGP9Vbp=LQbXG1C-a+MyMcg@mail.gmail.com>
On 08.04.21 14:49, Linus Walleij wrote:
> On Thu, Apr 8, 2021 at 2:01 PM David Hildenbrand <david@redhat.com> wrote:
>
>>> This is something you could do using a hidden helper symbol like
>>>
>>> config DRMA_ASPEED_GFX
>>> bool "Aspeed display driver"
>>> select DRM_WANT_CMA
>>>
>>> config DRM_WANT_CMA
>>> bool
>>> help
>>> Select this from any driver that benefits from CMA being enabled
>>>
>>> config DMA_CMA
>>> bool "Use CMA helpers for DRM"
>>> default DRM_WANT_CMA
>>>
>>> Arnd
>>>
>>
>> That's precisely what I had first, with an additional "WANT_CMA" -- but
>> looking at the number of such existing options (I was able to spot 1 !)
>
> If you do this it probably makes sense to fix a few other drivers
> Kconfig in the process. It's not just a problem with your driver.
> "my" drivers:
>
:) I actually wanted to convert them to "depends on DMA_CMA" but ran
into recursive dependencies ...
> drivers/gpu/drm/mcde/Kconfig
> drivers/gpu/drm/pl111/Kconfig
> drivers/gpu/drm/tve200/Kconfig
I was assuming these are "real" dependencies. Will it also work without
DMA_CMA?
>
> certainly needs this as well, and pretty much anything that is
> selecting DRM_KMS_CMA_HELPER or
> DRM_GEM_CMA_HELPER "wants" DMA_CMA.
"wants" as in "desires to use but can life without" or "wants" as in
"really needs it". ?
--
Thanks,
David / dhildenb
WARNING: multiple messages have this Message-ID (diff)
From: David Hildenbrand <david@redhat.com>
To: Linus Walleij <linus.walleij@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux-MM <linux-mm@kvack.org>, Joel Stanley <joel@jms.id.au>,
David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
Andrew Jeffery <andrew@aj.id.au>,
Lucas Stach <l.stach@pengutronix.de>,
Russell King <linux+etnaviv@armlinux.org.uk>,
Christian Gmeiner <christian.gmeiner@gmail.com>,
Mike Rapoport <rppt@kernel.org>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
Michal Simek <michal.simek@xilinx.com>,
Masahiro Yamada <masahiroy@kernel.org>,
Randy Dunlap <rdunlap@infradead.org>,
Peter Collingbourne <pcc@google.com>,
linux-aspeed <linux-aspeed@lists.ozlabs.org>,
dri-devel <dri-devel@lists.freedesktop.org>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
The etnaviv authors <etnaviv@lists.freedesktop.org>,
Linux Fbdev development list <linux-fbdev@vger.kernel.org>
Subject: Re: [PATCH v1 2/2] drivers/gpu/drm: don't select DMA_CMA or CMA from aspeed or etnaviv
Date: Thu, 8 Apr 2021 18:44:23 +0200 [thread overview]
Message-ID: <2ef3b65c-c0ef-7bbe-0e05-39ee8f2bae48@redhat.com> (raw)
In-Reply-To: <CACRpkdYizKGhtYzE+22oZAduLNCOGP9Vbp=LQbXG1C-a+MyMcg@mail.gmail.com>
On 08.04.21 14:49, Linus Walleij wrote:
> On Thu, Apr 8, 2021 at 2:01 PM David Hildenbrand <david@redhat.com> wrote:
>
>>> This is something you could do using a hidden helper symbol like
>>>
>>> config DRMA_ASPEED_GFX
>>> bool "Aspeed display driver"
>>> select DRM_WANT_CMA
>>>
>>> config DRM_WANT_CMA
>>> bool
>>> help
>>> Select this from any driver that benefits from CMA being enabled
>>>
>>> config DMA_CMA
>>> bool "Use CMA helpers for DRM"
>>> default DRM_WANT_CMA
>>>
>>> Arnd
>>>
>>
>> That's precisely what I had first, with an additional "WANT_CMA" -- but
>> looking at the number of such existing options (I was able to spot 1 !)
>
> If you do this it probably makes sense to fix a few other drivers
> Kconfig in the process. It's not just a problem with your driver.
> "my" drivers:
>
:) I actually wanted to convert them to "depends on DMA_CMA" but ran
into recursive dependencies ...
> drivers/gpu/drm/mcde/Kconfig
> drivers/gpu/drm/pl111/Kconfig
> drivers/gpu/drm/tve200/Kconfig
I was assuming these are "real" dependencies. Will it also work without
DMA_CMA?
>
> certainly needs this as well, and pretty much anything that is
> selecting DRM_KMS_CMA_HELPER or
> DRM_GEM_CMA_HELPER "wants" DMA_CMA.
"wants" as in "desires to use but can life without" or "wants" as in
"really needs it". ?
--
Thanks,
David / dhildenb
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
WARNING: multiple messages have this Message-ID (diff)
From: David Hildenbrand <david@redhat.com>
To: Linus Walleij <linus.walleij@linaro.org>
Cc: Linux ARM <linux-arm-kernel@lists.infradead.org>,
Linux Fbdev development list <linux-fbdev@vger.kernel.org>,
linux-aspeed <linux-aspeed@lists.ozlabs.org>,
Arnd Bergmann <arnd@arndb.de>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
David Airlie <airlied@linux.ie>, Andrew Jeffery <andrew@aj.id.au>,
Masahiro Yamada <masahiroy@kernel.org>,
Randy Dunlap <rdunlap@infradead.org>,
The etnaviv authors <etnaviv@lists.freedesktop.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
dri-devel <dri-devel@lists.freedesktop.org>,
Michal Simek <michal.simek@xilinx.com>,
Linux-MM <linux-mm@kvack.org>, Joel Stanley <joel@jms.id.au>,
Russell King <linux+etnaviv@armlinux.org.uk>,
Peter Collingbourne <pcc@google.com>,
Mike Rapoport <rppt@kernel.org>
Subject: Re: [PATCH v1 2/2] drivers/gpu/drm: don't select DMA_CMA or CMA from aspeed or etnaviv
Date: Thu, 8 Apr 2021 18:44:23 +0200 [thread overview]
Message-ID: <2ef3b65c-c0ef-7bbe-0e05-39ee8f2bae48@redhat.com> (raw)
In-Reply-To: <CACRpkdYizKGhtYzE+22oZAduLNCOGP9Vbp=LQbXG1C-a+MyMcg@mail.gmail.com>
On 08.04.21 14:49, Linus Walleij wrote:
> On Thu, Apr 8, 2021 at 2:01 PM David Hildenbrand <david@redhat.com> wrote:
>
>>> This is something you could do using a hidden helper symbol like
>>>
>>> config DRMA_ASPEED_GFX
>>> bool "Aspeed display driver"
>>> select DRM_WANT_CMA
>>>
>>> config DRM_WANT_CMA
>>> bool
>>> help
>>> Select this from any driver that benefits from CMA being enabled
>>>
>>> config DMA_CMA
>>> bool "Use CMA helpers for DRM"
>>> default DRM_WANT_CMA
>>>
>>> Arnd
>>>
>>
>> That's precisely what I had first, with an additional "WANT_CMA" -- but
>> looking at the number of such existing options (I was able to spot 1 !)
>
> If you do this it probably makes sense to fix a few other drivers
> Kconfig in the process. It's not just a problem with your driver.
> "my" drivers:
>
:) I actually wanted to convert them to "depends on DMA_CMA" but ran
into recursive dependencies ...
> drivers/gpu/drm/mcde/Kconfig
> drivers/gpu/drm/pl111/Kconfig
> drivers/gpu/drm/tve200/Kconfig
I was assuming these are "real" dependencies. Will it also work without
DMA_CMA?
>
> certainly needs this as well, and pretty much anything that is
> selecting DRM_KMS_CMA_HELPER or
> DRM_GEM_CMA_HELPER "wants" DMA_CMA.
"wants" as in "desires to use but can life without" or "wants" as in
"really needs it". ?
--
Thanks,
David / dhildenb
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
next prev parent reply other threads:[~2021-04-08 16:44 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-08 9:20 [PATCH v1 0/2] drivers: don't select DMA_CMA or CMA David Hildenbrand
2021-04-08 9:20 ` David Hildenbrand
2021-04-08 9:20 ` David Hildenbrand
2021-04-08 9:20 ` [PATCH v1 1/2] drivers/video/fbdev: don't select DMA_CMA David Hildenbrand
2021-04-08 9:20 ` David Hildenbrand
2021-04-08 9:20 ` David Hildenbrand
2021-04-08 9:56 ` Mike Rapoport
2021-04-08 9:56 ` Mike Rapoport
2021-04-08 9:56 ` Mike Rapoport
2021-04-08 9:20 ` [PATCH v1 2/2] drivers/gpu/drm: don't select DMA_CMA or CMA from aspeed or etnaviv David Hildenbrand
2021-04-08 9:20 ` David Hildenbrand
2021-04-08 9:20 ` David Hildenbrand
2021-04-08 9:56 ` Mike Rapoport
2021-04-08 9:56 ` Mike Rapoport
2021-04-08 9:56 ` Mike Rapoport
2021-04-08 9:57 ` David Hildenbrand
2021-04-08 9:57 ` David Hildenbrand
2021-04-08 9:57 ` David Hildenbrand
2021-04-08 10:20 ` Arnd Bergmann
2021-04-08 10:20 ` Arnd Bergmann
2021-04-08 10:20 ` Arnd Bergmann
2021-04-08 10:20 ` Arnd Bergmann
2021-04-08 10:27 ` David Hildenbrand
2021-04-08 10:27 ` David Hildenbrand
2021-04-08 10:27 ` David Hildenbrand
2021-04-08 10:36 ` David Hildenbrand
2021-04-08 10:36 ` David Hildenbrand
2021-04-08 10:36 ` David Hildenbrand
2021-04-08 10:44 ` Arnd Bergmann
2021-04-08 10:44 ` Arnd Bergmann
2021-04-08 10:44 ` Arnd Bergmann
2021-04-08 10:44 ` Arnd Bergmann
2021-04-08 11:00 ` David Hildenbrand
2021-04-08 11:00 ` David Hildenbrand
2021-04-08 11:00 ` David Hildenbrand
2021-04-08 11:44 ` Arnd Bergmann
2021-04-08 11:44 ` Arnd Bergmann
2021-04-08 11:44 ` Arnd Bergmann
2021-04-08 11:44 ` Arnd Bergmann
2021-04-08 12:00 ` David Hildenbrand
2021-04-08 12:00 ` David Hildenbrand
2021-04-08 12:00 ` David Hildenbrand
2021-04-08 12:12 ` Arnd Bergmann
2021-04-08 12:12 ` Arnd Bergmann
2021-04-08 12:12 ` Arnd Bergmann
2021-04-08 12:12 ` Arnd Bergmann
2021-04-08 12:49 ` Linus Walleij
2021-04-08 12:49 ` Linus Walleij
2021-04-08 12:49 ` Linus Walleij
2021-04-08 12:49 ` Linus Walleij
2021-04-08 13:19 ` Arnd Bergmann
2021-04-08 13:19 ` Arnd Bergmann
2021-04-08 13:19 ` Arnd Bergmann
2021-04-08 13:19 ` Arnd Bergmann
2021-04-09 8:07 ` David Hildenbrand
2021-04-09 8:07 ` David Hildenbrand
2021-04-09 8:07 ` David Hildenbrand
2021-04-08 16:44 ` David Hildenbrand [this message]
2021-04-08 16:44 ` David Hildenbrand
2021-04-08 16:44 ` David Hildenbrand
2021-04-08 20:29 ` Arnd Bergmann
2021-04-08 20:29 ` Arnd Bergmann
2021-04-08 20:29 ` Arnd Bergmann
2021-04-08 20:29 ` Arnd Bergmann
2021-04-09 8:09 ` David Hildenbrand
2021-04-09 8:09 ` David Hildenbrand
2021-04-09 8:09 ` David Hildenbrand
2021-04-08 21:45 ` Linus Walleij
2021-04-08 21:45 ` Linus Walleij
2021-04-08 21:45 ` Linus Walleij
2021-04-08 21:45 ` Linus Walleij
2021-04-08 11:38 ` Daniel Vetter
2021-04-08 11:38 ` Daniel Vetter
2021-04-08 11:38 ` Daniel Vetter
2021-04-08 16:46 ` Jason Gunthorpe
2021-04-08 16:46 ` Jason Gunthorpe
2021-04-08 16:46 ` Jason Gunthorpe
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