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Commit 088c7c74 authored by Sandeep Panda's avatar Sandeep Panda Committed by Gerrit - the friendly Code Review server
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msm: mdss: avoid fake ack and overflow errors during ESD 



In the current implementation DSI driver is masking the
fake ACK and overflow errors that might occur during if
BTA mechanism is used to check ESD. But if register read
mechanism is used to check ESD, then also embedded BTA will
be triggered and fake ACK and overflow errors might be
reported. Mask the same for register based ESD check also.

Change-Id: If1ee0a7cc0171b96a3b7298aa5201372c6eb8139
Signed-off-by: default avatarSandeep Panda <spanda@codeaurora.org>
parent a385b633

drivers/video/fbdev/msm/mdss_dsi_host.c

+8 −3
Original line number Diff line number Diff line
@@ -2974,7 +2974,10 @@ bool mdss_dsi_ack_err_status(struct mdss_dsi_ctrl_pdata *ctrl) 
		 * warning message is ignored.

		 */

		if (ctrl->panel_data.panel_info.esd_check_enabled &&

			(ctrl->status_mode == ESD_BTA) && (status & 0x1008000))

			((ctrl->status_mode == ESD_BTA) ||

			 (ctrl->status_mode == ESD_REG) ||

			 (ctrl->status_mode == ESD_REG_NT35596)) &&

			 (status & 0x1008000))

			return false;



		pr_err("%s: status=%x\n", __func__, status);
@@ -3205,7 +3208,9 @@ irqreturn_t mdss_dsi_isr(int irq, void *ptr) 
		 * cleared.

		 */

		if (ctrl->panel_data.panel_info.esd_check_enabled &&

			(ctrl->status_mode == ESD_BTA) &&

			((ctrl->status_mode == ESD_BTA) ||

			 (ctrl->status_mode == ESD_REG) ||

			 (ctrl->status_mode == ESD_REG_NT35596)) &&

			 (ctrl->panel_mode == DSI_VIDEO_MODE)) {

			isr &= ~DSI_INTR_ERROR;

			/* clear only overflow */