Commit 0594ffee authored by Lewis Huang's avatar Lewis Huang Committed by Alex Deucher
Browse files

drm/amd/display: fix i2c wtire mot incorrect issue 



[Why]
I2C write command always send mot = true will cause sink state incorrect.

[How]
1. Remove default i2c write mot = true.
2. Deciding mot flag by is_end_of_payload flag.

Signed-off-by: default avatarLewis Huang <Lewis.Huang@amd.com>
Reviewed-by: default avatarCharlene Liu <Charlene.Liu@amd.com>
Acked-by: default avatarLeo Li <sunpeng.li@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 616f5b65

drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c

+2 −2
Original line number Diff line number Diff line
@@ -525,7 +525,7 @@ bool dal_ddc_service_query_ddc_data( 


		if (write_size != 0) {

			payload.write = true;

			payload.mot = true;

			payload.mot = false;

			payload.length = write_size;

			payload.data = write_buf;
@@ -594,7 +594,7 @@ bool dal_ddc_submit_aux_command(struct ddc_service *ddc, 
		current_payload.i2c_over_aux = payload->i2c_over_aux;

		current_payload.length = is_end_of_payload ?

			payload->length - retrieved : DEFAULT_AUX_MAX_DATA_SIZE;

		current_payload.mot = payload->mot ? payload->mot : !is_end_of_payload;

		current_payload.mot = !is_end_of_payload;

		current_payload.reply = payload->reply;

		current_payload.write = payload->write;

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