Jeff LaBundy
9a6dca86cf
[ Upstream commit3689abfc4e] Unless it is being done as part of servicing a soft reset interrupt, configuring channels on-the-fly (as is the case when writing to the ati_trigger attribute) may cause GPIO3 (which reflects the state of touch for a selected channel) to be inadvertently asserted. To solve this problem, follow the vendor's recommendation and write all channel configuration as well as the REDO_ATI register field as part of a single block write. This ensures the device has been told to re-calibrate itself following an I2C stop condition, after which sensing resumes and GPIO3 may be asserted. Fixes:04e49867fa("Input: add support for Azoteq IQS269A") Signed-off-by: Jeff LaBundy <jeff@labundy.com> Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> Link: https://lore.kernel.org/r/Y7Rs8GyV7g0nF5Yy@nixie71 Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Sasha Levin <sashal@kernel.org>