Thread (17 messages) flat view 17 messages, 3 authors, 2024-03-28

Re: [PATCH v4 00/10] backlight: Replace struct fb_info in interfaces

From: Lee Jones <lee@kernel.org>
Date: 2024-03-13 08:03:27
Also in: dri-devel, linux-input, linux-pwm

On Wed, 13 Mar 2024, Uwe Kleine-König wrote:
Hello Thomas,

On Tue, Mar 05, 2024 at 05:22:33PM +0100, Thomas Zimmermann wrote:
quoted
Backlight drivers implement struct backlight_ops.check_fb, which
uses struct fb_info in its interface. Replace the callback with one
that does not use fb_info.

In DRM, we have several drivers that implement backlight support. By
including <linux/backlight.h> these drivers depend on <linux/fb.h>.
At the same time, fbdev is deprecated for new drivers and likely to
be replaced on many systems.

This patchset is part of a larger effort to implement the backlight
code without depending on fbdev.

Patch 1 makes the backlight core match backlight and framebuffer
devices via struct fb_info.bl_dev. Patches 2 to 9 then go through
drivers and remove unnecessary implementations of check_fb. Finally,
patch 10 replaces the check_fb hook with controls_device, which
uses the framebuffer's Linux device instead of the framebuffer.
I assume the merge plan for this series is via drm-misc in one go?
Backlight in one go.  This will be the second attempt at applying it.

-- 
Lee Jones [李琼斯]
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