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Commit 31d4846c authored by Aravind Venkateswaran's avatar Aravind Venkateswaran
Browse files

disp: msm: dsi: add additional validation checks for async cmd wait 



Disable DSI command transfer async wait feature for DSI read commands
and the commands sent in non-embedded mode.

CRs-Fixed: 2579259
Change-Id: Ib3b08fbb091711aa4be87400b79d01f0dcc05e71
Signed-off-by: default avatarAravind Venkateswaran <aravindh@codeaurora.org>
parent dc6311b1

msm/dsi/dsi_ctrl.c

+10 −4
Original line number Diff line number Diff line
@@ -1282,13 +1282,19 @@ static u32 dsi_ctrl_validate_msg_flags(const struct mipi_dsi_msg *msg, 
				u32 flags)

{

	/*

	 * ASYNC command wait mode is not supported for FIFO commands.

	 * Waiting after a command is transferred cannot be guaranteed

	 * if DSI_CTRL_CMD_ASYNC_WAIT flag is set.

	 * ASYNC command wait mode is not supported for

	 *    - commands sent using DSI FIFO memory

	 *    - DSI read commands

	 *    - DCS commands sent in non-embedded mode

	 *    - whenever an explicit wait time is specificed for the command

	 *      since the wait time cannot be guaranteed in async mode

	 */

	if ((flags & DSI_CTRL_CMD_FIFO_STORE) ||

		flags & DSI_CTRL_CMD_READ ||

		flags & DSI_CTRL_CMD_NON_EMBEDDED_MODE ||

		msg->wait_ms)

		flags &= ~DSI_CTRL_CMD_ASYNC_WAIT;



	return flags;

}