If the enable-gpios property of a simple panel in device tree is set,
the GPIO is not toggled on/off because of missing calls to
drm_panel_prepare and drm_panel_unprepare.
Signed-off-by: Jonathan Liu <net147@xxxxxxxxx>
---
drivers/gpu/drm/sun4i/sun4i_rgb.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/sun4i/sun4i_rgb.c b/drivers/gpu/drm/sun4i/sun4i_rgb.c
index f5bbac6..d6943e9 100644
--- a/drivers/gpu/drm/sun4i/sun4i_rgb.c
+++ b/drivers/gpu/drm/sun4i/sun4i_rgb.c
@@ -151,6 +151,7 @@ static void sun4i_rgb_encoder_enable(struct drm_encoder *encoder)
DRM_DEBUG_DRIVER("Enabling RGB output\n");
+ drm_panel_prepare(tcon->panel);
drm_panel_enable(tcon->panel);
sun4i_tcon_channel_enable(tcon, 0);
}
@@ -165,6 +166,7 @@ static void sun4i_rgb_encoder_disable(struct drm_encoder *encoder)
sun4i_tcon_channel_disable(tcon, 0);
drm_panel_disable(tcon->panel);
+ drm_panel_unprepare(tcon->panel);
}
static void sun4i_rgb_encoder_mode_set(struct drm_encoder *encoder,
--
2.9.3
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