[PATCH V5 0/2] Fix WLED FSC Sync and brightness Sync settings

Kiran Gunda
2021-03-18T12:41:11Z

This patch series has the following two WLED fixes
1. As per the current implementation, for WLED5, after
the FSC (Full Scale Current) update the driver is incorrectly
toggling the MOD_SYNC register instead of toggling the SYNC register.
The patch 1/2 fixes this by toggling the SYNC register after
FSC update.

2. Currently, the sync bits are set-then-cleared after FSC and brightness
update. As per hardware team recommendation the FSC and brightness sync
takes place from clear-then-set transition of the sync bits.
The patch 2/2 fies this issue.

changes from V4:
1. Rebased this patch series on the below patch.
"backlight-qcom-wled-Use-sink_addr-for-sync-toggle.patch".

Changes from V3:
1. Updated the patch description as per Daneil's suggestion.
2. Added Daniel's "Reviewed-by" tag for patch 2/2.
3. Updated the cover letter to use "set" and "clear" properly.

Changes from V2:
1. Added Daniel's "Reviewed-by" tag for patch 1/2.
2. Updated the patch 2/2 description with "set" and "clear"
terminology instead of "1" and "0".
3. Updated the cover letter with "set" and "clear" terminology
instead of "1" and "0".

Changes from V1:
1. Updated the cover letter.
2. Updated the description of the patches as per Daniel's suggestion.

Kiran Gunda (2):
backlight: qcom-wled: Fix FSC update issue for WLED5
backlight: qcom-wled: Correct the sync_toggle sequence

drivers/video/backlight/qcom-wled.c | 37 +++++++++++++++++++++++++------------
1 file changed, 25 insertions(+), 12 deletions(-)