Re: [PATCH 1/2] drm/mediatek: set panel orientation before drm_dev_register().
Hi, Hsin-Yi:
Hsin-Yi Wang 於 2021年4月20日 週二 下午5:05寫道：
>
> On Fri, Apr 9, 2021 at 12:53 PM Hsin-Yi Wang wrote:
> >
> > 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.
All connector would have this problem, so I would like to fix this in
common code.
In drm_connector_init(), you could add "panel orientation" property
with value DRM_MODE_PANEL_ORIENTATION_UNKNOWN, so it would not add new
object when get modes.
Regards,
Chun-Kuang.
> >
> > [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
> >
> > [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
> > [4.11] 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
> >
> > [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
>
> ping on the thread, thanks.
>
> > ---
> > 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, >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,
> > >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
> >
Re: [PATCH 1/2] drm/mediatek: set panel orientation before drm_dev_register().
On Fri, Apr 9, 2021 at 12:53 PM Hsin-Yi Wang wrote:
>
> 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
>
> [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
> [4.11] 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
>
> [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
ping on the thread, thanks.
> ---
> 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, >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,
> >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
>
[PATCH 1/2] drm/mediatek: set panel orientation before drm_dev_register().
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
[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
[4.11] 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
[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
---
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, >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,
>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
