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| author | Meghana Madhyastha <meghana.madhyastha@gmail.com> | 2017-09-27 13:51:23 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2017-09-27 15:31:07 +0300 |
| commit | 9949b355dc1c259b4ed3c092b899b7e9cf166236 (patch) | |
| tree | 4b906999c5c6842737a3ccc8c2018778b0f40690 /Documentation | |
| parent | ffeeeed0aee9f36635c8642ff40de863bbb4224a (diff) | |
| download | linux-9949b355dc1c259b4ed3c092b899b7e9cf166236.tar.xz | |
drm/Documentation: Refine TODO for backlight helpers in tinydrm
Add a summary which resulted from discussions on what should
be done to refactor backlight helpers in tinydrm so that
they can be used in other drivers as well.
Signed-off-by: Meghana Madhyastha <meghana.madhyastha@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20170927105116.GA30391@meghana-HP-Pavilion-Notebook
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/gpu/todo.rst | 11 |
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. |