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From: Thomas Zimmermann <tzimmermann@suse.de>
To: Daniel Vetter <daniel.vetter@ffwll.ch>, Simon Ser <contact@emersion.fr>
Cc: Melissa Wen <melissa.srw@gmail.com>,
	Haneen Mohammed <hamohammed.sa@gmail.com>,
	DRI Development <dri-devel@lists.freedesktop.org>,
	Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>,
	Daniel Vetter <daniel.vetter@intel.com>
Subject: Re: [PATCH 1/3] drm/vkms: Set preferred depth correctly
Date: Tue, 27 Oct 2020 11:13:36 +0100	[thread overview]
Message-ID: <ef0788e4-d645-6f71-bece-fb8bcd0cb3c7@suse.de> (raw)
In-Reply-To: <CAKMK7uFtesxom12TL4MX2rAb2eW2nEmh5gfeCG-wVAyfNvkGRw@mail.gmail.com>

Hi

Am 16.10.20 um 13:35 schrieb Daniel Vetter:
> On Fri, Oct 16, 2020 at 12:38 PM Simon Ser <contact@emersion.fr> wrote:
>>
>>> The only thing we support is xrgb8888.
>>>
>>> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
>>> Cc: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
>>> Cc: Melissa Wen <melissa.srw@gmail.com>
>>> Cc: Haneen Mohammed <hamohammed.sa@gmail.com>
>>> Cc: Daniel Vetter <daniel@ffwll.ch>
>>> ---
>>>  drivers/gpu/drm/vkms/vkms_drv.c | 2 +-
>>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/gpu/drm/vkms/vkms_drv.c b/drivers/gpu/drm/vkms/vkms_drv.c
>>> index 726801ab44d4..eb4007443706 100644
>>> --- a/drivers/gpu/drm/vkms/vkms_drv.c
>>> +++ b/drivers/gpu/drm/vkms/vkms_drv.c
>>> @@ -124,7 +124,7 @@ static int vkms_modeset_init(struct vkms_device *vkmsdev)
>>>       dev->mode_config.max_height = YRES_MAX;
>>>       dev->mode_config.cursor_width = 512;
>>>       dev->mode_config.cursor_height = 512;
>>> -     dev->mode_config.preferred_depth = 24;
>>> +     dev->mode_config.preferred_depth = 32;
>>
>> Are you sure xrgb8888's depth is 32 and not 24? Looking at drmdb [1], *all*
>> drivers set it to 24.
> 
> Uh there's a problem I think. Depth should indeed stay at 24, the
> problem is that fb helpers directly take that to be the bpp parameter,
> which is a different thing. And if you look at how most drivers set up
> that, they pick 32.
> 
> I guess I need to revert this here, and unconfuse the fb helpers about
> depth vs bpp.

I just prepared the PR for drm-misc-next, but saw it at 32 still. Was
this supposed to be reverted?

Best regards
Thomas

> 
> Maybe best would be to just switch over to preferred drm_fourcc format
> code, or maybe just pick this up from the first format the primary
> plane supports.
> 
> This is all getting slightly tricky and a lot more work :-/
> -Daniel
> --
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
> 

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

  parent reply	other threads:[~2020-10-27 10:13 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-09 23:21 Daniel Vetter
2020-10-09 23:21 ` [PATCH 2/3] drm/vkms: Switch to shmem helpers Daniel Vetter
2020-10-12 10:59   ` Chris Wilson
2020-10-12 11:20     ` Thomas Zimmermann
2020-10-12 11:22   ` Thomas Zimmermann
2020-10-12 12:41   ` Melissa Wen
2020-10-13 11:10   ` [PATCH] " Daniel Vetter
2020-10-09 23:21 ` [PATCH 3/3] drm/vkms: fbdev emulation support Daniel Vetter
2020-10-12 11:24   ` Thomas Zimmermann
2020-10-12 12:40     ` Neil Armstrong
2020-10-12 14:23       ` Daniel Vetter
2020-10-13  6:14         ` Pekka Paalanen
2020-10-13  7:53           ` Daniel Vetter
2020-10-13 10:19             ` Pekka Paalanen
2020-10-13 11:03               ` Daniel Vetter
2020-10-16 10:10   ` Melissa Wen
2020-10-20  8:34     ` Daniel Vetter
2020-10-12 11:08 ` [PATCH 1/3] drm/vkms: Set preferred depth correctly Thomas Zimmermann
2020-10-12 12:59 ` Melissa Wen
2020-10-15 21:39   ` Daniel Vetter
2020-10-16 10:18     ` Melissa Wen
2020-10-16 10:38 ` Simon Ser
2020-10-16 11:35   ` Daniel Vetter
2020-10-16 17:02     ` Melissa Wen
2020-10-16 17:05       ` Daniel Vetter
2020-10-17  8:39         ` Melissa Wen
2020-10-17 15:23           ` Daniel Vetter
2020-10-27 10:13     ` Thomas Zimmermann [this message]
2020-10-27 10:18       ` Daniel Vetter

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