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Commit dcba699d authored by Kalyan Thota's avatar Kalyan Thota Committed by Krishna Chaitanya Devarakonda
Browse files

msm: mdss: avoid requesting ov_lock in esd thread 



From DSI HW version 103 onwards, for smart panels command and
data arbitration is possible in the h/w with the help of burst mode
feature in DSI controller. Hence removing the synchronization
mechanism which can cause performance issues.

CRs-Fixed: 1042240

Change-Id: I8eeb3508e2258318538e893069a2c74c068026fc
Signed-off-by: default avatarKalyan Thota <kalyant@codeaurora.org>
parent 638d25fd

drivers/video/msm/mdss/dsi_status_6g.c

+8 −4
Original line number Diff line number Diff line
@@ -123,16 +123,20 @@ void mdss_check_dsi_ctrl_status(struct work_struct *work, uint32_t interval) 
	 * to acquire ov_lock in case of video mode. Removing this

	 * lock to fix issues so that ESD thread would not block other

	 * overlay operations. Need refine this lock for command mode

	 *

	 * If Burst mode is enabled then we dont have to acquire ov_lock as

	 * command and data arbitration is possible in h/w

	 */



	if (mipi->mode == DSI_CMD_MODE)

	if ((mipi->mode == DSI_CMD_MODE) && !ctrl_pdata->burst_mode_enabled)

		mutex_lock(&mdp5_data->ov_lock);

	mutex_lock(&ctl->offlock);



	if (mdss_panel_is_power_off(pstatus_data->mfd->panel_power_state) ||

			pstatus_data->mfd->shutdown_pending) {

		mutex_unlock(&ctl->offlock);

		if (mipi->mode == DSI_CMD_MODE)

		if ((mipi->mode == DSI_CMD_MODE) &&

		    !ctrl_pdata->burst_mode_enabled)

			mutex_unlock(&mdp5_data->ov_lock);

		pr_err("%s: DSI turning off, avoiding panel status check\n",

							__func__);
@@ -149,7 +153,7 @@ void mdss_check_dsi_ctrl_status(struct work_struct *work, uint32_t interval) 
	 * display reset not to be proper. Hence, wait for DMA_P done

	 * for command mode panels before triggering BTA.

	 */

	if (ctl->ops.wait_pingpong)

	if (ctl->ops.wait_pingpong && !ctrl_pdata->burst_mode_enabled)

		ctl->ops.wait_pingpong(ctl, NULL);



	pr_debug("%s: DSI ctrl wait for ping pong done\n", __func__);
@@ -159,7 +163,7 @@ void mdss_check_dsi_ctrl_status(struct work_struct *work, uint32_t interval) 
	mdss_mdp_clk_ctrl(MDP_BLOCK_POWER_OFF);



	mutex_unlock(&ctl->offlock);

	if (mipi->mode == DSI_CMD_MODE)

	if ((mipi->mode == DSI_CMD_MODE) && !ctrl_pdata->burst_mode_enabled)

		mutex_unlock(&mdp5_data->ov_lock);



	if ((pstatus_data->mfd->panel_power_state == MDSS_PANEL_POWER_ON)) {