| Message ID | 20250226093456.147402-1-tzimmermann@suse.de (mailing list archive) |
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| Series |
backlight, lcd, led: Remove fbdev dependencies
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expand
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This series removes the remaining dependencies on fbdev from the backlight, lcd and led subsystems. Each depends on fbdev events to track display state. Make fbdev inform each subsystem via a dedicated interface instead. Patches 1 to 3 make fbdev track blank state for each display, so that backlight code doesn't have to. Patches 4 to 6 remove fbdev event handling from backlight code. Patches 7 and 8 remove fbdev event handling from lcd code and patches 9 and 10 do the same for led's backlight trigger. The final patch removes the event constants from fbdev. With the series applied, the three subsystems do no longer depend on fbdev. It's also a clean up for fbdev. Fbdev used to send out a large number of events. That mechanism has been deprecated for some time and converted call to dedicated functions instead. Testing is very welcome, as I don't have the hardware to test this series. Thomas Zimmermann (11): fbdev: Rework fb_blank() fbdev: Track display blanking state fbdev: Send old blank state in FB_EVENT_BLANK backlight: Implement fbdev tracking with blank state from event backlight: Move blank-state handling into helper backlight: Replace fb events with a dedicated function call backlight: lcd: Move event handling into helpers backlight: lcd: Replace fb events with a dedicated function call leds: backlight trigger: Move blank-state handling into helper leds: backlight trigger: Replace fb events with a dedicated function call fbdev: Remove constants of unused events drivers/leds/trigger/ledtrig-backlight.c | 47 +++++----- drivers/video/backlight/backlight.c | 93 +++++--------------- drivers/video/backlight/lcd.c | 107 +++++++++-------------- drivers/video/fbdev/core/fb_backlight.c | 12 +++ drivers/video/fbdev/core/fb_info.c | 1 + drivers/video/fbdev/core/fbmem.c | 82 ++++++++++++++--- drivers/video/fbdev/core/fbsysfs.c | 8 +- include/linux/backlight.h | 22 ++--- include/linux/fb.h | 12 +-- include/linux/lcd.h | 21 ++++- include/linux/leds.h | 6 ++ 11 files changed, 203 insertions(+), 208 deletions(-)