evie/android_kernel_oneplus_msm8998
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msm: mdss: avoid requesting ov_lock in esd thread

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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: Jayant Shekhar <jshekhar@codeaurora.org>
This commit is contained in:
Jayant Shekhar 2016-12-05 14:47:01 +05:30
parent 5142c18bae
commit 920c1e078e
1 changed files with 8 additions and 4 deletions
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12
drivers/video/fbdev/msm/dsi_status_6g.c
View file

@ -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)) {