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From: Daniel Vetter <daniel@ffwll.ch>
To: LKML <linux-kernel@vger.kernel.org>,
	Greg KH <gregkh@linuxfoundation.org>
Cc: Intel Graphics Development <intel-gfx@lists.freedesktop.org>,
	DRI Development <dri-devel@lists.freedesktop.org>,
	Daniel Vetter <daniel.vetter@ffwll.ch>,
	Daniel Vetter <daniel.vetter@intel.com>,
	Jens Frederich <jfrederich@gmail.com>,
	Daniel Drake <dsd@laptop.org>,
	Jon Nettleton <jon.nettleton@gmail.com>
Subject: Re: [PATCH 32/33] staging/olpc_dcon: Add drm conversion to TODO
Date: Mon, 27 May 2019 09:11:26 +0200	[thread overview]
Message-ID: <20190527071126.GL21222@phenom.ffwll.local> (raw)
In-Reply-To: <20190524085354.27411-33-daniel.vetter@ffwll.ch>

On Fri, May 24, 2019 at 10:53:53AM +0200, Daniel Vetter wrote:
> this driver is pretty horrible from a design pov, and needs a complete
> overhaul. Concrete thing that annoys me is that it looks at
> registered_fb, which is an internal thing to fbmem.c and fbcon.c. And
> ofc it gets the lifetime rules all wrong (it should at least use
> get/put_fb_info).
> 
> Looking at the history, there's been an attempt at dropping this from
> staging in 2016, but that had to be reverted. Since then not real
> effort except the usual stream of trivial patches, and fbdev has been
> formally closed for any new hw support. Time to try again and drop
> this?
> 
> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
> Cc: Jens Frederich <jfrederich@gmail.com>
> Cc: Daniel Drake <dsd@laptop.org>
> Cc: Jon Nettleton <jon.nettleton@gmail.com>

Hi Greg

Again get_mainatiners didn't pick you up on this somehow (I manually added
you now for the next round). Do you want to pick this up to staging, or
ack for merging through drm/fbdev as part of the larger fbdev/fbcon
rework?

Also, I think time to retry and attempt at dropping this imo ...

Thanks, Daniel

> ---
>  drivers/staging/olpc_dcon/TODO | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/staging/olpc_dcon/TODO b/drivers/staging/olpc_dcon/TODO
> index 665a0b061719..fe09efbc7f77 100644
> --- a/drivers/staging/olpc_dcon/TODO
> +++ b/drivers/staging/olpc_dcon/TODO
> @@ -1,4 +1,11 @@
>  TODO:
> +	- complete rewrite:
> +	  1. The underlying fbdev drivers need to be converted into drm kernel
> +	     modesetting drivers.
> +	  2. The dcon low-power display mode can then be integrated using the
> +	     drm damage tracking and self-refresh helpers.
> +	  This bolted-on self-refresh support that digs around in fbdev
> +	  internals, but isn't properly integrated, is not the correct solution.
>  	- see if vx855 gpio API can be made similar enough to cs5535 so we can
>  	  share more code
>  	- convert all uses of the old GPIO API from <linux/gpio.h> to the
> -- 
> 2.20.1
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch

WARNING: multiple messages have this Message-ID
From: Daniel Vetter <daniel@ffwll.ch>
To: LKML <linux-kernel@vger.kernel.org>,
	Greg KH <gregkh@linuxfoundation.org>
Cc: Daniel Drake <dsd@laptop.org>,
	Jens Frederich <jfrederich@gmail.com>,
	Daniel Vetter <daniel.vetter@ffwll.ch>,
	Intel Graphics Development <intel-gfx@lists.freedesktop.org>,
	DRI Development <dri-devel@lists.freedesktop.org>,
	Daniel Vetter <daniel.vetter@intel.com>,
	Jon Nettleton <jon.nettleton@gmail.com>
Subject: Re: [PATCH 32/33] staging/olpc_dcon: Add drm conversion to TODO
Date: Mon, 27 May 2019 09:11:26 +0200	[thread overview]
Message-ID: <20190527071126.GL21222@phenom.ffwll.local> (raw)
In-Reply-To: <20190524085354.27411-33-daniel.vetter@ffwll.ch>

On Fri, May 24, 2019 at 10:53:53AM +0200, Daniel Vetter wrote:
> this driver is pretty horrible from a design pov, and needs a complete
> overhaul. Concrete thing that annoys me is that it looks at
> registered_fb, which is an internal thing to fbmem.c and fbcon.c. And
> ofc it gets the lifetime rules all wrong (it should at least use
> get/put_fb_info).
> 
> Looking at the history, there's been an attempt at dropping this from
> staging in 2016, but that had to be reverted. Since then not real
> effort except the usual stream of trivial patches, and fbdev has been
> formally closed for any new hw support. Time to try again and drop
> this?
> 
> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
> Cc: Jens Frederich <jfrederich@gmail.com>
> Cc: Daniel Drake <dsd@laptop.org>
> Cc: Jon Nettleton <jon.nettleton@gmail.com>

Hi Greg

Again get_mainatiners didn't pick you up on this somehow (I manually added
you now for the next round). Do you want to pick this up to staging, or
ack for merging through drm/fbdev as part of the larger fbdev/fbcon
rework?

Also, I think time to retry and attempt at dropping this imo ...

Thanks, Daniel

> ---
>  drivers/staging/olpc_dcon/TODO | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/staging/olpc_dcon/TODO b/drivers/staging/olpc_dcon/TODO
> index 665a0b061719..fe09efbc7f77 100644
> --- a/drivers/staging/olpc_dcon/TODO
> +++ b/drivers/staging/olpc_dcon/TODO
> @@ -1,4 +1,11 @@
>  TODO:
> +	- complete rewrite:
> +	  1. The underlying fbdev drivers need to be converted into drm kernel
> +	     modesetting drivers.
> +	  2. The dcon low-power display mode can then be integrated using the
> +	     drm damage tracking and self-refresh helpers.
> +	  This bolted-on self-refresh support that digs around in fbdev
> +	  internals, but isn't properly integrated, is not the correct solution.
>  	- see if vx855 gpio API can be made similar enough to cs5535 so we can
>  	  share more code
>  	- convert all uses of the old GPIO API from <linux/gpio.h> to the
> -- 
> 2.20.1
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

  reply	other threads:[~2019-05-27  7:11 UTC|newest]

Thread overview: 103+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-24  8:53 [PATCH 00/33] fbcon notifier begone! Daniel Vetter
2019-05-24  8:53 ` Daniel Vetter
2019-05-24  8:53 ` [PATCH 01/33] dummycon: Sprinkle locking checks Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-24  8:53 ` [PATCH 02/33] fbdev: locking check for fb_set_suspend Daniel Vetter
2019-05-24  8:53 ` [PATCH 03/33] vt: might_sleep() annotation for do_blank_screen Daniel Vetter
2019-05-24  8:53 ` [PATCH 04/33] vt: More locking checks Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-27  7:08   ` Daniel Vetter
2019-05-27  7:08     ` Daniel Vetter
2019-05-27  7:22     ` Greg Kroah-Hartman
2019-05-24  8:53 ` [PATCH 05/33] fbdev/sa1100fb: Remove dead code Daniel Vetter
2019-05-24  8:53 ` [PATCH 06/33] fbdev/cyber2000: Remove struct display Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-24  8:53 ` [PATCH 07/33] fbdev/aty128fb: Remove dead code Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-24  8:53 ` [PATCH 08/33] fbcon: s/struct display/struct fbcon_display/ Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-24  8:53 ` [PATCH 09/33] fbcon: Remove fbcon_has_exited Daniel Vetter
2019-05-25 15:38   ` Sam Ravnborg
2019-05-25 15:38     ` Sam Ravnborg
2019-05-27  6:10     ` Daniel Vetter
2019-05-27  6:10       ` Daniel Vetter
2019-05-27  6:51       ` Sam Ravnborg
2019-05-27  6:51         ` Sam Ravnborg
2019-05-24  8:53 ` [PATCH 10/33] fbcon: call fbcon_fb_(un)registered directly Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-24  8:53 ` [PATCH 11/33] fbdev/sh_mobile: remove sh_mobile_lcdc_display_notify Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-25 15:01   ` Sam Ravnborg
2019-05-25 15:01     ` Sam Ravnborg
2019-05-27  6:13     ` Daniel Vetter
2019-05-27  6:52       ` Sam Ravnborg
2019-05-24  8:53 ` [PATCH 12/33] fbdev/omap: sysfs files can't disappear before the device is gone Daniel Vetter
2019-05-24  8:53 ` [PATCH 13/33] fbdev: " Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-24  8:53 ` [PATCH 14/33] staging/olpc: lock_fb_info can't fail Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-27  7:10   ` Daniel Vetter
2019-05-27  7:22     ` Greg KH
2019-05-27  7:22       ` Greg KH
2019-05-24  8:53 ` [PATCH 15/33] fbdev/atyfb: " Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-24  8:53 ` [PATCH 16/33] fbdev: lock_fb_info cannot fail Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-24  8:53 ` [PATCH 17/33] fbcon: call fbcon_fb_bind directly Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-24  8:53 ` [PATCH 18/33] fbdev: make unregister/unlink functions not fail Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-24  8:53 ` [PATCH 19/33] fbdev: unify unlink_framebuffer paths Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-24  8:53 ` [PATCH 20/33] fbdev/sh_mob: Remove fb notifier callback Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-24  8:53 ` [PATCH 21/33] fbdev: directly call fbcon_suspended/resumed Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-24  8:53 ` [PATCH 22/33] fbcon: Call fbcon_mode_deleted/new_modelist directly Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-24  8:53 ` [PATCH 23/33] fbdev: Call fbcon_get_requirement directly Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-24  8:53 ` [PATCH 24/33] Revert "backlight/fbcon: Add FB_EVENT_CONBLANK" Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-24 13:14   ` Daniel Thompson
2019-05-24 13:14     ` Daniel Thompson
2019-05-24 13:14     ` Daniel Thompson
2019-05-24 15:28     ` Daniel Vetter
2019-05-24 15:28       ` Daniel Vetter
2019-05-27 10:59       ` Bartlomiej Zolnierkiewicz
2019-05-27 10:59         ` Bartlomiej Zolnierkiewicz
2019-05-24  8:53 ` [PATCH 25/33] fbmem: pull fbcon_fb_blanked out of fb_blank Daniel Vetter
2019-05-25 17:00   ` Sam Ravnborg
2019-05-25 17:00     ` Sam Ravnborg
2019-05-24  8:53 ` [PATCH 26/33] fbdev: remove FBINFO_MISC_USEREVENT around fb_blank Daniel Vetter
2019-05-24  8:53 ` [PATCH 27/33] fb: Flatten control flow in fb_set_var Daniel Vetter
2019-05-24  8:53 ` [PATCH 28/33] fbcon: replace FB_EVENT_MODE_CHANGE/_ALL with direct calls Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-24  8:53 ` [PATCH 29/33] vgaswitcheroo: call fbcon_remap_all directly Daniel Vetter
2019-05-24  8:53   ` Daniel Vetter
2019-05-24  8:53 ` [PATCH 30/33] fbcon: Call con2fb_map functions directly Daniel Vetter
2019-05-24  8:53 ` [PATCH 31/33] fbcon: Document what I learned about fbcon locking Daniel Vetter
2019-05-24  8:53 ` [PATCH 32/33] staging/olpc_dcon: Add drm conversion to TODO Daniel Vetter
2019-05-27  7:11   ` Daniel Vetter [this message]
2019-05-27  7:11     ` Daniel Vetter
2019-05-27  7:22     ` Greg KH
2019-05-24  8:53 ` [PATCH 33/33] backlight: simplify lcd notifier Daniel Vetter
2019-05-24 11:03 ` ✗ Fi.CI.CHECKPATCH: warning for fbcon notifier begone! (rev3) Patchwork
2019-05-24 11:18 ` ✗ Fi.CI.SPARSE: " Patchwork
2019-05-24 11:23 ` ✓ Fi.CI.BAT: success " Patchwork
2019-05-25 17:19 ` [PATCH 00/33] fbcon notifier begone! Sam Ravnborg
2019-05-27  7:17   ` Daniel Vetter
2019-05-27 11:56     ` Daniel Vetter
2019-05-25 17:24 ` ✗ Fi.CI.IGT: failure for fbcon notifier begone! (rev3) Patchwork
2019-05-26 15:34 ` ✗ Fi.CI.CHECKPATCH: warning for fbcon notifier begone! (rev4) Patchwork
2019-05-26 15:49 ` ✗ Fi.CI.SPARSE: " Patchwork
2019-05-26 15:53 ` ✓ Fi.CI.BAT: success " Patchwork
2019-05-27 11:02 ` ✓ Fi.CI.IGT: " Patchwork
2019-05-28  9:02 [PATCH 00/33] fbcon notifier begone v3! Daniel Vetter
2019-05-28  9:03 ` [PATCH 32/33] staging/olpc_dcon: Add drm conversion to TODO Daniel Vetter
2019-05-28  9:03   ` Daniel Vetter

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