[RFC PATCH v2 4/9] drm/panel: nv3052c: Wait before entering sleep mode

[John Watts]

The panel needs us to wait 120ms between exiting and entering sleep.
Guarantee that by always waiting 150ms before entering sleep mode.

Signed-off-by: John Watts <contact@xxxxxxxxxx>
---
 drivers/gpu/drm/panel/panel-newvision-nv3052c.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-newvision-nv3052c.c b/drivers/gpu/drm/panel/panel-newvision-nv3052c.c
index 2526b123b1f5..307335d0f1fc 100644
--- a/drivers/gpu/drm/panel/panel-newvision-nv3052c.c
+++ b/drivers/gpu/drm/panel/panel-newvision-nv3052c.c
@@ -289,6 +289,9 @@ static int nv3052c_unprepare(struct drm_panel *panel)
 	struct mipi_dbi *dbi = &priv->dbi;
 	int err;
 
+	/* Wait 150ms in case we just exited sleep mode */
+	msleep(150);
+
 	err = mipi_dbi_command(dbi, MIPI_DCS_ENTER_SLEEP_MODE);
 	if (err)
 		dev_err(priv->dev, "Unable to enter sleep mode: %d\n", err);
-- 
2.42.0