drm_dev_register() sets connector->registration_state to
DRM_CONNECTOR_REGISTERED and dev->registered to true. If
drm_connector_set_panel_orientation() is first called after
drm_dev_register(), it will fail several checks and results in following
warning. So set panel orientation in dsi before drm_dev_register() is
called.
[ 4.480976] ------------[ cut here ]------------
[ 4.485603] WARNING: CPU: 5 PID: 369 at drivers/gpu/drm/drm_mode_object.c:45 __drm_mode_object_add+0xb4/0xbc
<snip>
[ 4.609772] Call trace:
[ 4.612208] __drm_mode_object_add+0xb4/0xbc
[ 4.616466] drm_mode_object_add+0x20/0x2c
[ 4.620552] drm_property_create+0xdc/0x174
[ 4.624723] drm_property_create_enum+0x34/0x98
[ 4.629241] drm_connector_set_panel_orientation+0x64/0xa0
[ 4.634716] boe_panel_get_modes+0x88/0xd8
[ 4.638802] drm_panel_get_modes+0x2c/0x48
[ 4.642887] panel_bridge_get_modes+0x1c/0x28
[ 4.647233] drm_bridge_connector_get_modes+0xa0/0xd4
[ 4.652273] drm_helper_probe_single_connector_modes+0x218/0x700
[ 4.658266] drm_mode_getconnector+0x1b4/0x45c
[ 4.662699] drm_ioctl_kernel+0xac/0x128
[ 4.666611] drm_ioctl+0x268/0x410
[ 4.670002] drm_compat_ioctl+0xdc/0xf0
[ 4.673829] __arm64_compat_sys_ioctl+0xc8/0x100
[ 4.678436] el0_svc_common+0xf4/0x1c0
[ 4.682174] do_el0_svc_compat+0x28/0x3c
[ 4.686088] el0_svc_compat+0x10/0x1c
[ 4.689738] el0_sync_compat_handler+0xa8/0xcc
[ 4.694171] el0_sync_compat+0x178/0x180
[ 4.698082] ---[ end trace b4f2db9d9c88610b ]---
[ 4.702721] ------------[ cut here ]------------
[ 4.707329] WARNING: CPU: 5 PID: 369 at drivers/gpu/drm/drm_mode_object.c:243 drm_object_attach_property+0x48/0xb8
<snip>
[ 4.833830] Call trace:
[ 4.836266] drm_object_attach_property+0x48/0xb8
[ 4.840958] drm_connector_set_panel_orientation+0x84/0xa0
[ 4.846432] boe_panel_get_modes+0x88/0xd8
[ 4.850516] drm_panel_get_modes+0x2c/0x48
[ 4.854600] panel_bridge_get_modes+0x1c/0x28
[ 4.858946] drm_bridge_connector_get_modes+0xa0/0xd4
[ 4.863984] drm_helper_probe_single_connector_modes+0x218/0x700
[ 4.869978] drm_mode_getconnector+0x1b4/0x45c
[ 4.874410] drm_ioctl_kernel+0xac/0x128
[ 4.878320] drm_ioctl+0x268/0x410
[ 4.881711] drm_compat_ioctl+0xdc/0xf0
[ 4.885536] __arm64_compat_sys_ioctl+0xc8/0x100
[ 4.890142] el0_svc_common+0xf4/0x1c0
[ 4.893879] do_el0_svc_compat+0x28/0x3c
[ 4.897791] el0_svc_compat+0x10/0x1c
[ 4.901441] el0_sync_compat_handler+0xa8/0xcc
[ 4.905873] el0_sync_compat+0x178/0x180
[ 4.909783] ---[ end trace b4f2db9d9c88610c ]---
Signed-off-by: Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx>
---
drivers/gpu/drm/mediatek/mtk_dsi.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
index ae403c67cbd9..45a702ee09f3 100644
--- a/drivers/gpu/drm/mediatek/mtk_dsi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
@@ -205,6 +205,7 @@ struct mtk_dsi {
u32 irq_data;
wait_queue_head_t irq_wait_queue;
const struct mtk_dsi_driver_data *driver_data;
+ enum drm_panel_orientation orientation;
};
static inline struct mtk_dsi *bridge_to_dsi(struct drm_bridge *b)
@@ -966,6 +967,8 @@ static int mtk_dsi_encoder_init(struct drm_device *drm, struct mtk_dsi *dsi)
}
drm_connector_attach_encoder(dsi->connector, &dsi->encoder);
+ drm_connector_set_panel_orientation(dsi->connector, dsi->orientation);
+
return 0;
err_cleanup_encoder:
@@ -1029,6 +1032,12 @@ static int mtk_dsi_probe(struct platform_device *pdev)
ret = PTR_ERR(dsi->next_bridge);
goto err_unregister_host;
}
+
+ ret = of_drm_get_panel_orientation(panel->dev->of_node, &dsi->orientation);
+ if (ret) {
+ dev_err(dev, "failed to get panel orientation %d\n", ret);
+ return ret;
+ }
}
dsi->driver_data = of_device_get_match_data(dev);
--
2.31.1.295.g9ea45b61b8-goog
