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disp: msm: sde: reset bl_scale_sv in power off case

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In userspace, the backlight scale of LTM will be set to the maximum value
in the suspend case. However, sometimes this value is sent to the driver
after resume. This will cause a backlight flicker issue.
For fix this issue, this change resets the backlight scale in the suspend
case.

Change-Id: I0eb586eeefbf3444d6f44281d58789460300dffc
Signed-off-by: Yuchao Ma <quic_yuchaom@quicinc.com>
This commit is contained in:
Yuchao Ma
2023-06-07 17:48:00 +08:00
parent 6d21952dd2
commit 02428b713f
1 changed files with 15 additions and 3 deletions
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18
msm/sde/sde_connector.c
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@@ -1728,6 +1728,20 @@ static int _sde_connector_set_prop_dyn_transfer_time(struct sde_connector *c_con
return rc;
}
static void _sde_connector_handle_dpms_off(struct sde_connector *c_conn, uint64_t val)
{
/* suspend case: clear stale MISR */
if (val == SDE_MODE_DPMS_OFF) {
memset(&c_conn->previous_misr_sign, 0, sizeof(struct sde_misr_sign));
/* reset backlight scale of LTM */
if (c_conn->bl_scale_sv != MAX_SV_BL_SCALE_LEVEL) {
c_conn->bl_scale_sv = MAX_SV_BL_SCALE_LEVEL;
c_conn->bl_scale_dirty = true;
}
}
}
static int sde_connector_atomic_set_property(struct drm_connector *connector,
struct drm_connector_state *state,
struct drm_property *property,
@@ -1823,9 +1837,7 @@ static int sde_connector_atomic_set_property(struct drm_connector *connector,
_sde_connector_set_prop_dyn_transfer_time(c_conn, val);
break;
case CONNECTOR_PROP_LP:
/* suspend case: clear stale MISR */
if (val == SDE_MODE_DPMS_OFF)
memset(&c_conn->previous_misr_sign, 0, sizeof(struct sde_misr_sign));
_sde_connector_handle_dpms_off(c_conn, val);
break;
default:
break;