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disp: msm: dp: restore brightness on resume for eDP

Browse source 
For eDP connectors, store brightness setting during
bridge disable and restore during bridge enable.

Signed-off-by: Nilesh Laad <quic_nlaad@quicinc.com>
Change-Id: I04834b86110d9bec40d458f609adb8aeae49b9dd
This commit is contained in:
Nilesh Laad 2023-09-15 17:49:19 +05:30
commit f76dda607b
2 changed files with 19 additions and 11 deletions
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3
msm/dp/dp_drm.c
View file

@ -150,6 +150,9 @@ static void dp_bridge_enable(struct drm_bridge *drm_bridge)
if (rc)
DP_ERR("[%d] DP display post enable failed, rc=%d\n",
bridge->id, rc);
if (dp->is_edp)
sde_connector_helper_bridge_enable(bridge->connector);
}
static void dp_bridge_disable(struct drm_bridge *drm_bridge)

27
msm/sde/sde_connector.c
View file

@ -1020,18 +1020,23 @@ void sde_connector_helper_bridge_enable(struct drm_connector *connector)
}
c_conn = to_sde_connector(connector);
display = (struct dsi_display *) c_conn->display;
/*
* Special handling for some panels which need atleast
* one frame to be transferred to GRAM before enabling backlight.
* So delay backlight update to these panels until the
* first frame commit is received from the HW.
*/
if (display->panel->bl_config.bl_update ==
BL_UPDATE_DELAY_UNTIL_FIRST_FRAME)
sde_encoder_wait_for_event(c_conn->encoder,
MSM_ENC_TX_COMPLETE);
if (c_conn->connector_type == DRM_MODE_CONNECTOR_DSI) {
display = (struct dsi_display *) c_conn->display;
/*
* Special handling for some panels which need atleast
* one frame to be transferred to GRAM before enabling
* backlight.
* So delay backlight update to these panels until the
* first frame commit is received from the HW.
*/
if (display->panel->bl_config.bl_update ==
BL_UPDATE_DELAY_UNTIL_FIRST_FRAME)
sde_encoder_wait_for_event(c_conn->encoder,
MSM_ENC_TX_COMPLETE);
}
c_conn->allow_bl_update = true;
if (!sde_in_trusted_vm(sde_kms) && c_conn->bl_device) {