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disp: msm: dsi: reorder operations during DSI display pre kickoff

Sfoglia il codice sorgente 
During a dynamic mode switch if the DSI clocks need to be changed,
it would result in a sequence of clock off and on operations. If
this happens after a partial update even though the commands are
sent with an asynchronous wait flag, the clock off forces the commit
thread to wait  till the DSI command wait_for_done thread is
scheduled and completed. The change ensures that the clock change is
the first operation that occurs during pre kickoff.

Change-Id: I1b4e765cd0281f1539fc4af309247f3bc0867c1b
Signed-off-by: Satya Rama Aditya Pinapala <psraditya30@codeaurora.org>
This commit is contained in:
Satya Rama Aditya Pinapala
2020-07-01 13:03:26 -07:00
committato da Gerrit - the friendly Code Review server
parent b41ee8cf11
commit b03e4eceb8
1 ha cambiato i file con 4 aggiunte e 4 eliminazioni
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8
msm/dsi/dsi_display.c
Vedi File

@@ -7546,15 +7546,13 @@ int dsi_display_pre_kickoff(struct drm_connector *connector,
struct dsi_display *display,
struct msm_display_kickoff_params *params)
{
int rc = 0;
int rc = 0, ret = 0;
int i;
/* check and setup MISR */
if (display->misr_enable)
_dsi_display_setup_misr(display);
rc = dsi_display_set_roi(display, params->rois);
/* dynamic DSI clock setting */
if (atomic_read(&display->clkrate_change_pending)) {
mutex_lock(&display->display_lock);
@@ -7572,7 +7570,6 @@ int dsi_display_pre_kickoff(struct drm_connector *connector,
*/
display_for_each_ctrl(i, display) {
struct dsi_ctrl *ctrl = display->ctrl[i].ctrl;
int ret = 0;
ret = dsi_ctrl_wait_for_cmd_mode_mdp_idle(ctrl);
if (ret)
@@ -7590,6 +7587,9 @@ wait_failure:
mutex_unlock(&display->display_lock);
}
if (!ret)
rc = dsi_display_set_roi(display, params->rois);
return rc;
}