summaryrefslogtreecommitdiffstats
path: root/Documentation/gpu
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/gpu')
-rw-r--r--Documentation/gpu/todo.rst11
1 files changed, 10 insertions, 1 deletions
diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst
index 5f4870289135..92ee2f982572 100644
--- a/Documentation/gpu/todo.rst
+++ b/Documentation/gpu/todo.rst
@@ -351,7 +351,16 @@ those drivers as simple as possible, so lots of room for refactoring:
- backlight helpers, probably best to put them into a new drm_backlight.c.
This is because drivers/video is de-facto unmaintained. We could also
move drivers/video/backlight to drivers/gpu/backlight and take it all
- over within drm-misc, but that's more work.
+ over within drm-misc, but that's more work. Backlight helpers require a fair
+ bit of reworking and refactoring. A simple example is the enabling of a backlight.
+ Tinydrm has helpers for this. It would be good if other drivers can also use the
+ helper. However, there are various cases we need to consider i.e different
+ drivers seem to have different ways of enabling/disabling a backlight.
+ We also need to consider the backlight drivers (like gpio_backlight). The situation
+ is further complicated by the fact that the backlight is tied to fbdev
+ via fb_notifier_callback() which has complicated logic. For further details, refer
+ to the following discussion thread:
+ https://groups.google.com/forum/#!topic/outreachy-kernel/8rBe30lwtdA
- spi helpers, probably best put into spi core/helper code. Thierry said
the spi maintainer is fast&reactive, so shouldn't be a big issue.