From: Andy Yan <andy.yan@rock-chips.com>
To: Sascha Hauer <s.hauer@pengutronix.de>
Cc: dri-devel@lists.freedesktop.org,
linux-arm-kernel@lists.infradead.org,
linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org,
kernel@pengutronix.de,
"Benjamin Gaignard" <benjamin.gaignard@collabora.com>,
"Michael Riesch" <michael.riesch@wolfvision.net>,
"Sandy Huang" <hjc@rock-chips.com>,
"Heiko Stübner" <heiko@sntech.de>,
"Peter Geis" <pgwipeout@gmail.com>,
"Kever Yang" <Kever.yang@rock-chips.com>
Subject: Re: [PATCH v9 20/23] drm/rockchip: Make VOP driver optional
Date: Thu, 31 Mar 2022 19:00:34 +0800 [thread overview]
Message-ID: <8aa9da47-d7ed-41bf-384c-103757c19fe2@rock-chips.com> (raw)
In-Reply-To: <20220331081815.GF4012@pengutronix.de>
Hi:
On 3/31/22 16:18, Sascha Hauer wrote:
> On Thu, Mar 31, 2022 at 03:20:37PM +0800, Andy Yan wrote:
>> Hi Sascha:
>>
>> On 3/31/22 15:06, Sascha Hauer wrote:
>>> On Wed, Mar 30, 2022 at 08:50:09PM +0800, Andy Yan wrote:
>>>> Hi Sascha:
>>>>
>>>> On 3/30/22 14:39, Sascha Hauer wrote:
>>>>> Hi Andy,
>>>>>
>>>>> On Tue, Mar 29, 2022 at 07:56:27PM +0800, Andy Yan wrote:
>>>>>> Hi Sascha:
>>>>>>
>>>>>> On 3/28/22 23:11, Sascha Hauer wrote:
>>>>>>> With upcoming VOP2 support VOP won't be the only choice anymore, so make
>>>>>>> the VOP driver optional.
>>>>>>>
>>>>>>> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
>>>>>>> ---
>>>>>>> drivers/gpu/drm/rockchip/Kconfig | 8 ++++++++
>>>>>>> drivers/gpu/drm/rockchip/Makefile | 3 ++-
>>>>>>> drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 2 +-
>>>>>>> 3 files changed, 11 insertions(+), 2 deletions(-)
>>>>>>>
>>>>>>> diff --git a/drivers/gpu/drm/rockchip/Kconfig b/drivers/gpu/drm/rockchip/Kconfig
>>>>>>> index fa5cfda4e90e3..7d22e2997a571 100644
>>>>>>> --- a/drivers/gpu/drm/rockchip/Kconfig
>>>>>>> +++ b/drivers/gpu/drm/rockchip/Kconfig
>>>>>>> @@ -23,8 +23,16 @@ config DRM_ROCKCHIP
>>>>>>> if DRM_ROCKCHIP
>>>>>>> +config ROCKCHIP_VOP
>>>>>>> + bool "Rockchip VOP driver"
>>>>>>> + default y
>>>>>>> + help
>>>>>>> + This selects support for the VOP driver. You should enable it
>>>>>>> + on all older SoCs up to RK3399.
>>>>> That reminds me that I wanted to rephrase this. Will change in next
>>>>> round.
>>>>>
>>>>>>> +
>>>>>>> config ROCKCHIP_ANALOGIX_DP
>>>>>>> bool "Rockchip specific extensions for Analogix DP driver"
>>>>>>> + depends on ROCKCHIP_VOP
>>>>>> Aanlogix dp is also on vop2 base soc such as rk356x and rk3588.
>>> BTW I just looked at the downstream driver. Here we have the same
>>> situation that the analogix dp driver calls rockchip_drm_wait_vact_end()
>>> which is implemented in the VOP driver, so when the analogix dp driver
>>> is actually used on a VOP2 SoC then it is either used in a way that
>>> rockchip_drm_wait_vact_end() will never be called or it explodes in all
>>> colours.
>>>
>>>>> I added the dependency because analogix_dp-rockchip.c calls
>>>>> rockchip_drm_wait_vact_end() which is implemented in the VOP driver,
>>>>> so this driver currenty can't work with the VOP2 driver and can't
>>>>> be linked without the VOP driver being present.
>>>>> I'll add a few words to the commit message.
>>>> Maybe a better direction is move rockchip_drm_wait_vact_end from the VOP
>>>> driver to rockchip_drm_drv.c
>>> I am not sure if that's really worth it. Yes, the direction might be the
>>> right one, but I would really prefer when somebody does the change who
>>> can test and confirm that the analogix dp really works with VOP2 in the
>>> end.
>> If follow this point, the current DW_MIPI also has not been tested for
>> confirm that it
>>
>> can really work with VOP2, so you should also make it depends on
>> ROCKCHIP_VOP.
> Well at least I have patches here which make DW_MIPI work with VOP2 ;)
But you DW_MIPI patches for rk356x didn't come. So this is not keep
consistency with this point.
>
> What about the others, like LVDS and RGB?
Yes, we also have other interface , RK356X has LVDS/RGB/BT1120/BT656,
RK3588 has BT1120/BT656, no LVDS or RGB.
>> I think the current solution is just a workaround to make your patch pass
>> the kernel compile
> Indeed.
>
> I agree that it would be good to add a note somewhere which outputs
> work with the VOP2 driver (currently only HDMI), but I wonder if Kconfig
> dependencies is the right place for it, because only people who deliberately
> disable VOP support will see this information.
> Maybe we should rather add it to the Kconfig help text?
If a device is supported for this soc, we will add dt node at the dtsi file.
A Kconfig dependencies don't seems a good idea.
>
> Sascha
>
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next prev parent reply other threads:[~2022-03-31 11:01 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-28 15:10 [PATCH v9 00/23] drm/rockchip: RK356x VOP2 support Sascha Hauer
2022-03-28 15:10 ` [PATCH v9 01/23] clk: rk3568: Mark hclk_vo as critical Sascha Hauer
2022-03-29 13:22 ` Dmitry Osipenko
2022-04-06 11:15 ` Robin Murphy
2022-03-28 15:10 ` [PATCH v9 02/23] drm/rockchip: Embed drm_encoder into rockchip_decoder Sascha Hauer
2022-03-28 15:10 ` [PATCH v9 03/23] drm/rockchip: Add crtc_endpoint_id to rockchip_encoder Sascha Hauer
2022-03-28 15:10 ` [PATCH v9 04/23] drm/rockchip: dw_hdmi: rename vpll clock to reference clock Sascha Hauer
2022-03-28 15:10 ` [PATCH v9 05/23] dt-bindings: display: rockchip: dw-hdmi: use "ref" as clock name Sascha Hauer
2022-03-28 15:10 ` [PATCH v9 06/23] arm64: dts: rockchip: rk3399: rename HDMI ref clock to 'ref' Sascha Hauer
2022-03-28 15:11 ` [PATCH v9 07/23] drm/rockchip: dw_hdmi: add rk3568 support Sascha Hauer
2022-03-28 15:11 ` [PATCH v9 08/23] dt-bindings: display: rockchip: dw-hdmi: Add compatible for rk3568 HDMI Sascha Hauer
2022-03-28 15:11 ` [PATCH v9 09/23] drm/rockchip: dw_hdmi: add regulator support Sascha Hauer
2022-03-28 15:11 ` [PATCH v9 10/23] dt-bindings: display: rockchip: dw-hdmi: Add " Sascha Hauer
2022-03-28 15:11 ` [PATCH v9 11/23] drm/rockchip: dw_hdmi: Use auto-generated tables Sascha Hauer
2022-03-28 15:11 ` [PATCH v9 12/23] drm/rockchip: dw_hdmi: drop mode_valid hook Sascha Hauer
2022-03-28 15:11 ` [PATCH v9 13/23] drm/rockchip: dw_hdmi: Set cur_ctr to 0 always Sascha Hauer
2022-03-28 15:11 ` [PATCH v9 14/23] drm/rockchip: dw_hdmi: add default 594Mhz clk for 4K@60hz Sascha Hauer
2022-03-28 15:11 ` [PATCH v9 15/23] dt-bindings: display: rockchip: dw-hdmi: Make unwedge pinctrl optional Sascha Hauer
2022-03-28 15:11 ` [PATCH v9 16/23] arm64: dts: rockchip: rk356x: Add VOP2 nodes Sascha Hauer
2022-03-28 15:11 ` [PATCH v9 17/23] arm64: dts: rockchip: rk356x: Add HDMI nodes Sascha Hauer
2022-03-28 15:11 ` [PATCH v9 18/23] arm64: dts: rockchip: rk3568-evb: Enable VOP2 and hdmi Sascha Hauer
2022-03-28 15:11 ` [PATCH v9 19/23] arm64: dts: rockchip: enable vop2 and hdmi tx on quartz64a Sascha Hauer
2022-03-28 15:11 ` [PATCH v9 20/23] drm/rockchip: Make VOP driver optional Sascha Hauer
2022-03-29 11:56 ` Andy Yan
2022-03-30 6:39 ` Sascha Hauer
2022-03-30 12:50 ` Andy Yan
2022-03-31 7:06 ` Sascha Hauer
2022-03-31 7:20 ` Andy Yan
2022-03-31 8:18 ` Sascha Hauer
2022-03-31 11:00 ` Andy Yan [this message]
2022-04-01 12:55 ` Sascha Hauer
2022-04-02 1:25 ` Andy Yan
2022-04-05 9:05 ` Sascha Hauer
2022-04-06 1:43 ` Andy Yan
2022-04-06 7:04 ` Sascha Hauer
2022-04-06 7:47 ` Andy Yan
2022-04-06 8:00 ` Sascha Hauer
2022-03-28 15:11 ` [PATCH v9 22/23] dt-bindings: display: rockchip: Add binding for VOP2 Sascha Hauer
2022-03-28 15:11 ` [PATCH v9 23/23] dt-bindings: display: rockchip: dw-hdmi: fix ports description Sascha Hauer
2022-03-29 7:31 ` [PATCH v9 00/23] drm/rockchip: RK356x VOP2 support Piotr Oniszczuk
2022-03-30 7:28 ` Sascha Hauer
2022-03-30 8:41 ` piotro.oniszczuk@google.com
2022-03-30 9:45 ` Sascha Hauer
2022-03-30 10:01 ` piotro.oniszczuk@google.com
2022-03-30 10:20 ` Sascha Hauer
2022-03-30 14:52 ` Piotr Oniszczuk
2022-03-30 19:20 ` Sascha Hauer
2022-03-30 19:35 ` Piotr Oniszczuk
2022-03-30 19:59 ` Sascha Hauer
2022-03-31 12:13 ` Andy Yan
2022-03-31 12:19 ` Sascha Hauer
2022-03-31 14:53 ` Piotr Oniszczuk
2022-03-31 15:00 ` Sascha Hauer
2022-03-31 15:06 ` Piotr Oniszczuk
2022-03-31 15:19 ` Piotr Oniszczuk
[not found] ` <622c8786-2c3f-13ff-66b7-ad9c8cb9425e@rock-chips.com>
2022-04-01 7:06 ` Sascha Hauer
[not found] ` <041d7795-fdec-8e7d-a9ee-aa79c0faa6f3@rock-chips.com>
2022-04-01 12:53 ` Piotr Oniszczuk
2022-04-01 12:52 ` Sascha Hauer
2022-04-01 13:05 ` Piotr Oniszczuk
2022-04-06 9:47 ` Piotr Oniszczuk
2022-04-06 14:58 ` Sascha Hauer
2022-04-06 16:00 ` Piotr Oniszczuk
2022-04-07 10:16 ` Sascha Hauer
2022-04-07 15:02 ` Piotr Oniszczuk
2022-04-08 8:07 ` Sascha Hauer
2022-04-08 12:00 ` Sascha Hauer
2022-04-08 15:54 ` Piotr Oniszczuk
2022-04-11 9:08 ` Sascha Hauer
2022-04-11 11:07 ` Piotr Oniszczuk
2022-04-12 7:50 ` Sascha Hauer
2022-04-12 8:10 ` Lucas Stach
2022-04-12 10:14 ` Piotr Oniszczuk
2022-04-12 11:30 ` Daniel Stone
2022-04-15 11:11 ` Piotr Oniszczuk
2022-04-25 14:54 ` Daniel Stone
2022-04-12 9:28 ` Piotr Oniszczuk
2022-04-02 1:37 ` Andy Yan
2022-04-05 9:37 ` Sascha Hauer
2022-04-06 2:02 ` Andy Yan
2022-04-06 8:13 ` Sascha Hauer
2022-04-06 8:36 ` Andy Yan
2022-04-06 14:54 ` Sascha Hauer
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