[PATCH v3 0/7] drm: exynos: dsi: Convert drm bridge
Marek Szyprowski
m.szyprowski at samsung.com
Wed Dec 15 06:09:46 UTC 2021
Hi Jagan,
On 14.12.2021 11:47, Jagan Teki wrote:
> On Mon, Dec 13, 2021 at 7:42 PM Marek Szyprowski
> <m.szyprowski at samsung.com> wrote:
>> On 13.12.2021 14:56, Jagan Teki wrote:
>>> On Mon, Dec 13, 2021 at 6:51 PM Marek Szyprowski
>>> <m.szyprowski at samsung.com> wrote:
>>>> On 13.12.2021 13:31, Jagan Teki wrote:
>>>>> On Mon, Dec 13, 2021 at 5:42 PM Marek Szyprowski
>>>>> <m.szyprowski at samsung.com> wrote:
>>>>>> On 13.12.2021 13:08, Jagan Teki wrote:
>>>>>>> On Mon, Dec 13, 2021 at 5:34 PM Marek Szyprowski
>>>>>>> <m.szyprowski at samsung.com> wrote:
>>>>>>>> On 12.12.2021 19:14, Jagan Teki wrote:
>>>>>>>>> Updated series about drm bridge conversion of exynos dsi.
>>>>>>>>>
>>>>>>>>> Patch 1: panel checker
>>>>>>>>>
>>>>>>>>> Patch 2: panel_bridge API
>>>>>>>>>
>>>>>>>>> Patch 3: Bridge conversion
>>>>>>>>>
>>>>>>>>> Patch 4: pree_enable, post_disable
>>>>>>>>>
>>>>>>>>> Patch 5: Atomic functions
>>>>>>>>>
>>>>>>>>> Patch 6: atomic_set
>>>>>>>>>
>>>>>>>>> Patch 7: DSI init in enable
>>>>>>>>>
>>>>>>>>> [1] https://patchwork.kernel.org/project/dri-devel/cover/20211210191922.2367979-1-jagan@amarulasolutions.com/
>>>>>>>>>
>>>>>>>>> Any inputs?
>>>>>>>> I've checked this patchset on Exynos based Trats2 board (the one with
>>>>>>>> simplest display pipeline: Exynos FIMD -> Exynos DSI -> s6e8aa0 DSI
>>>>>>>> panel). DRM stops working after the 2nd patch ("[PATCH v3 2/7] drm:
>>>>>>>> exynos: dsi: Use drm panel_bridge API"):
>>>>>>>>
>>>>>>>> > [...]
>>> Thanks for testing it.
>>>
>>> Can you test it on the downstream bridge, tc358764 and post the result?
>> There were 2 logs in my reply. One from trats2 board (just dsi panel)
>> and one from arndale (tc bridge + simple panel).
> Okay. Got it.
>
> Can you test this tc358764 panel_bridge patch on linux-next? don't
> apply this series, apply only below patch and test.
>
Yes, sure. Sadly, it also breaks display operation:
OF: graph: no port node found in /soc/hdmi at 14530000
[drm] Exynos DRM: using 14400000.fimd device for DMA mapping operations
exynos-drm exynos-drm: bound 14400000.fimd (ops fimd_component_ops)
exynos-drm exynos-drm: bound 14450000.mixer (ops mixer_component_ops)
OF: graph: no port node found in /soc/dsi at 14500000
exynos-drm exynos-drm: bound 14500000.dsi (ops exynos_dsi_component_ops)
exynos-drm exynos-drm: bound 14530000.hdmi (ops hdmi_component_ops)
exynos-drm exynos-drm: [drm] Cannot find any crtc or sizes
exynos-drm exynos-drm: [drm] Cannot find any crtc or sizes
[drm] Initialized exynos 1.1.0 20180330 for exynos-drm on minor 0
panfrost 11800000.gpu: clock rate = 533000000
panfrost 11800000.gpu: mali-t600 id 0x600 major 0x0 minor 0x0 status 0x1
panfrost 11800000.gpu: features: 00000000,10206000, issues:
00000000,31b4dfff
panfrost 11800000.gpu: Features: L2:0x07110206 Shader:0x00000000
Tiler:0x00000809 Mem:0x1 MMU:0x00002830 AS:0xf JS:0x7
panfrost 11800000.gpu: shader_present=0xf l2_present=0x1
[drm] Initialized panfrost 1.2.0 20180908 for 11800000.gpu on minor 1
------------[ cut here ]------------
WARNING: CPU: 1 PID: 23 at drivers/gpu/drm/drm_atomic_state_helper.c:494
drm_atomic_helper_connector_duplicate_state+0x60/0x68
Modules linked in:
CPU: 1 PID: 23 Comm: kworker/1:1 Not tainted
5.16.0-rc5-next-20211213-00001-gac4117943791 #11072
Hardware name: Samsung Exynos (Flattened Device Tree)
Workqueue: events output_poll_execute
[<c01110d0>] (unwind_backtrace) from [<c010cab0>] (show_stack+0x10/0x14)
[<c010cab0>] (show_stack) from [<c0b71b58>] (dump_stack_lvl+0x58/0x70)
[<c0b71b58>] (dump_stack_lvl) from [<c0126c9c>] (__warn+0x228/0x22c)
[<c0126c9c>] (__warn) from [<c0126d4c>] (warn_slowpath_fmt+0xac/0xb4)
[<c0126d4c>] (warn_slowpath_fmt) from [<c064e844>]
(drm_atomic_helper_connector_duplicate_state+0x60/0x68)
[<c064e844>] (drm_atomic_helper_connector_duplicate_state) from
[<c06685f4>] (drm_atomic_get_connector_state+0xd8/0x190)
[<c06685f4>] (drm_atomic_get_connector_state) from [<c066960c>]
(__drm_atomic_helper_set_config+0x2a0/0x368)
[<c066960c>] (__drm_atomic_helper_set_config) from [<c0680a20>]
(drm_client_modeset_commit_atomic+0x178/0x27c)
[<c0680a20>] (drm_client_modeset_commit_atomic) from [<c0680be0>]
(drm_client_modeset_commit_locked+0x48/0x1d0)
[<c0680be0>] (drm_client_modeset_commit_locked) from [<c0680d8c>]
(drm_client_modeset_commit+0x24/0x40)
[<c0680d8c>] (drm_client_modeset_commit) from [<c0652a94>]
(__drm_fb_helper_restore_fbdev_mode_unlocked+0x64/0xc8)
[<c0652a94>] (__drm_fb_helper_restore_fbdev_mode_unlocked) from
[<c0652b60>] (drm_fb_helper_set_par+0x38/0x64)
[<c0652b60>] (drm_fb_helper_set_par) from [<c0652c34>]
(drm_fb_helper_hotplug_event.part.5+0xa8/0xc0)
[<c0652c34>] (drm_fb_helper_hotplug_event.part.5) from [<c063dfbc>]
(drm_kms_helper_hotplug_event+0x24/0x30)
[<c063dfbc>] (drm_kms_helper_hotplug_event) from [<c063e210>]
(output_poll_execute+0x1ec/0x204)
[<c063e210>] (output_poll_execute) from [<c0148990>]
(process_one_work+0x2c8/0x7ec)
[<c0148990>] (process_one_work) from [<c0148f04>] (worker_thread+0x50/0x584)
[<c0148f04>] (worker_thread) from [<c0151300>] (kthread+0x13c/0x19c)
[<c0151300>] (kthread) from [<c0100108>] (ret_from_fork+0x14/0x2c)
Exception stack(0xc1d35fb0 to 0xc1d35ff8)
5fa0: 00000000 00000000 00000000
00000000
5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000
5fe0: 00000000 00000000 00000000 00000000 00000013 00000000
irq event stamp: 1287
hardirqs last enabled at (1293): [<c01a3b94>] vprintk_emit+0x270/0x2b4
hardirqs last disabled at (1298): [<c01a3b50>] vprintk_emit+0x22c/0x2b4
softirqs last enabled at (1260): [<c01016fc>] __do_softirq+0x4cc/0x5ec
softirqs last disabled at (1255): [<c01301c8>] irq_exit+0x1cc/0x200
---[ end trace 0fa33551718d667f ]---
------------[ cut here ]------------
WARNING: CPU: 0 PID: 7 at drivers/gpu/drm/drm_atomic_state_helper.c:494
drm_atomic_helper_connector_duplicate_state+0x60/0x68
Modules linked in:
CPU: 0 PID: 7 Comm: kworker/u4:0 Tainted: G W
5.16.0-rc5-next-20211213-00001-gac4117943791 #11072
Hardware name: Samsung Exynos (Flattened Device Tree)
Workqueue: events_unbound deferred_probe_work_func
[<c01110d0>] (unwind_backtrace) from [<c010cab0>] (show_stack+0x10/0x14)
[<c010cab0>] (show_stack) from [<c0b71b58>] (dump_stack_lvl+0x58/0x70)
[<c0b71b58>] (dump_stack_lvl) from [<c0126c9c>] (__warn+0x228/0x22c)
[<c0126c9c>] (__warn) from [<c0126d4c>] (warn_slowpath_fmt+0xac/0xb4)
[<c0126d4c>] (warn_slowpath_fmt) from [<c064e844>]
(drm_atomic_helper_connector_duplicate_state+0x60/0x68)
[<c064e844>] (drm_atomic_helper_connector_duplicate_state) from
[<c06685f4>] (drm_atomic_get_connector_state+0xd8/0x190)
[<c06685f4>] (drm_atomic_get_connector_state) from [<c066960c>]
(__drm_atomic_helper_set_config+0x2a0/0x368)
[<c066960c>] (__drm_atomic_helper_set_config) from [<c0680a20>]
(drm_client_modeset_commit_atomic+0x178/0x27c)
[<c0680a20>] (drm_client_modeset_commit_atomic) from [<c0680be0>]
(drm_client_modeset_commit_locked+0x48/0x1d0)
[<c0680be0>] (drm_client_modeset_commit_locked) from [<c0680d8c>]
(drm_client_modeset_commit+0x24/0x40)
[<c0680d8c>] (drm_client_modeset_commit) from [<c0652a94>]
(__drm_fb_helper_restore_fbdev_mode_unlocked+0x64/0xc8)
[<c0652a94>] (__drm_fb_helper_restore_fbdev_mode_unlocked) from
[<c0652b60>] (drm_fb_helper_set_par+0x38/0x64)
[<c0652b60>] (drm_fb_helper_set_par) from [<c05bbf28>]
(fbcon_init+0x48c/0x510)
[<c05bbf28>] (fbcon_init) from [<c0608b50>] (visual_init+0xc0/0x108)
[<c0608b50>] (visual_init) from [<c0609d78>]
(do_bind_con_driver+0x1ac/0x388)
[<c0609d78>] (do_bind_con_driver) from [<c060a2b0>]
(do_take_over_console+0x13c/0x1c8)
[<c060a2b0>] (do_take_over_console) from [<c05b90e0>]
(do_fbcon_takeover+0x74/0xcc)
[<c05b90e0>] (do_fbcon_takeover) from [<c05b38f0>]
(register_framebuffer+0x1c8/0x2d8)
[<c05b38f0>] (register_framebuffer) from [<c06524a4>]
(__drm_fb_helper_initial_config_and_unlock+0x440/0x65c)
[<c06524a4>] (__drm_fb_helper_initial_config_and_unlock) from
[<c063dfbc>] (drm_kms_helper_hotplug_event+0x24/0x30)
[<c063dfbc>] (drm_kms_helper_hotplug_event) from [<c0690fb8>]
(exynos_dsi_host_attach+0x170/0x2a4)
[<c0690fb8>] (exynos_dsi_host_attach) from [<c069d064>]
(tc358764_probe+0xe8/0x160)
[<c069d064>] (tc358764_probe) from [<c06b6fb0>] (really_probe+0x190/0x450)
[<c06b6fb0>] (really_probe) from [<c06b7314>]
(__driver_probe_device+0xa4/0x204)
[<c06b7314>] (__driver_probe_device) from [<c06b74a8>]
(driver_probe_device+0x34/0xd4)
[<c06b74a8>] (driver_probe_device) from [<c06b7884>]
(__device_attach_driver+0xb0/0x11c)
[<c06b7884>] (__device_attach_driver) from [<c06b5094>]
(bus_for_each_drv+0x70/0xb4)
[<c06b5094>] (bus_for_each_drv) from [<c06b6d80>]
(__device_attach+0xe0/0x178)
[<c06b6d80>] (__device_attach) from [<c06b5e0c>]
(bus_probe_device+0x88/0x90)
[<c06b5e0c>] (bus_probe_device) from [<c06b632c>]
(deferred_probe_work_func+0x4c/0xe8)
[<c06b632c>] (deferred_probe_work_func) from [<c0148990>]
(process_one_work+0x2c8/0x7ec)
[<c0148990>] (process_one_work) from [<c0148f04>] (worker_thread+0x50/0x584)
[<c0148f04>] (worker_thread) from [<c0151300>] (kthread+0x13c/0x19c)
[<c0151300>] (kthread) from [<c0100108>] (ret_from_fork+0x14/0x2c)
Exception stack(0xc1cc1fb0 to 0xc1cc1ff8)
1fa0: 00000000 00000000 00000000
00000000
1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000
1fe0: 00000000 00000000 00000000 00000000 00000013 00000000
irq event stamp: 24321
hardirqs last enabled at (24327): [<c01a3b94>] vprintk_emit+0x270/0x2b4
hardirqs last disabled at (24332): [<c01a3b50>] vprintk_emit+0x22c/0x2b4
softirqs last enabled at (21880): [<c01016fc>] __do_softirq+0x4cc/0x5ec
softirqs last disabled at (21875): [<c01301c8>] irq_exit+0x1cc/0x200
---[ end trace 0fa33551718d6680 ]---
------------[ cut here ]------------
WARNING: CPU: 0 PID: 7 at drivers/gpu/drm/drm_atomic_state_helper.c:494
drm_atomic_helper_connector_duplicate_state+0x60/0x68
Modules linked in:
CPU: 0 PID: 7 Comm: kworker/u4:0 Tainted: G W
5.16.0-rc5-next-20211213-00001-gac4117943791 #11072
Hardware name: Samsung Exynos (Flattened Device Tree)
Workqueue: events_unbound deferred_probe_work_func
[<c01110d0>] (unwind_backtrace) from [<c010cab0>] (show_stack+0x10/0x14)
[<c010cab0>] (show_stack) from [<c0b71b58>] (dump_stack_lvl+0x58/0x70)
[<c0b71b58>] (dump_stack_lvl) from [<c0126c9c>] (__warn+0x228/0x22c)
[<c0126c9c>] (__warn) from [<c0126d4c>] (warn_slowpath_fmt+0xac/0xb4)
[<c0126d4c>] (warn_slowpath_fmt) from [<c064e844>]
(drm_atomic_helper_connector_duplicate_state+0x60/0x68)
[<c064e844>] (drm_atomic_helper_connector_duplicate_state) from
[<c06685f4>] (drm_atomic_get_connector_state+0xd8/0x190)
[<c06685f4>] (drm_atomic_get_connector_state) from [<c066960c>]
(__drm_atomic_helper_set_config+0x2a0/0x368)
[<c066960c>] (__drm_atomic_helper_set_config) from [<c0680a20>]
(drm_client_modeset_commit_atomic+0x178/0x27c)
[<c0680a20>] (drm_client_modeset_commit_atomic) from [<c0680be0>]
(drm_client_modeset_commit_locked+0x48/0x1d0)
[<c0680be0>] (drm_client_modeset_commit_locked) from [<c0651c60>]
(drm_fb_helper_pan_display+0x90/0x1c4)
[<c0651c60>] (drm_fb_helper_pan_display) from [<c05b2ab0>]
(fb_pan_display+0xcc/0x138)
[<c05b2ab0>] (fb_pan_display) from [<c05bd024>] (bit_update_start+0x14/0x30)
[<c05bd024>] (bit_update_start) from [<c05bac30>] (fbcon_switch+0x2d0/0x3e4)
[<c05bac30>] (fbcon_switch) from [<c0609afc>] (redraw_screen+0x15c/0x22c)
[<c0609afc>] (redraw_screen) from [<c05ba7e4>]
(fbcon_prepare_logo+0x2d4/0x450)
[<c05ba7e4>] (fbcon_prepare_logo) from [<c05bbe50>] (fbcon_init+0x3b4/0x510)
[<c05bbe50>] (fbcon_init) from [<c0608b50>] (visual_init+0xc0/0x108)
[<c0608b50>] (visual_init) from [<c0609d78>]
(do_bind_con_driver+0x1ac/0x388)
[<c0609d78>] (do_bind_con_driver) from [<c060a2b0>]
(do_take_over_console+0x13c/0x1c8)
[<c060a2b0>] (do_take_over_console) from [<c05b90e0>]
(do_fbcon_takeover+0x74/0xcc)
[<c05b90e0>] (do_fbcon_takeover) from [<c05b38f0>]
(register_framebuffer+0x1c8/0x2d8)
[<c05b38f0>] (register_framebuffer) from [<c06524a4>]
(__drm_fb_helper_initial_config_and_unlock+0x440/0x65c)
[<c06524a4>] (__drm_fb_helper_initial_config_and_unlock) from
[<c063dfbc>] (drm_kms_helper_hotplug_event+0x24/0x30)
[<c063dfbc>] (drm_kms_helper_hotplug_event) from [<c0690fb8>]
(exynos_dsi_host_attach+0x170/0x2a4)
[<c0690fb8>] (exynos_dsi_host_attach) from [<c069d064>]
(tc358764_probe+0xe8/0x160)
[<c069d064>] (tc358764_probe) from [<c06b6fb0>] (really_probe+0x190/0x450)
[<c06b6fb0>] (really_probe) from [<c06b7314>]
(__driver_probe_device+0xa4/0x204)
[<c06b7314>] (__driver_probe_device) from [<c06b74a8>]
(driver_probe_device+0x34/0xd4)
[<c06b74a8>] (driver_probe_device) from [<c06b7884>]
(__device_attach_driver+0xb0/0x11c)
[<c06b7884>] (__device_attach_driver) from [<c06b5094>]
(bus_for_each_drv+0x70/0xb4)
[<c06b5094>] (bus_for_each_drv) from [<c06b6d80>]
(__device_attach+0xe0/0x178)
[<c06b6d80>] (__device_attach) from [<c06b5e0c>]
(bus_probe_device+0x88/0x90)
[<c06b5e0c>] (bus_probe_device) from [<c06b632c>]
(deferred_probe_work_func+0x4c/0xe8)
[<c06b632c>] (deferred_probe_work_func) from [<c0148990>]
(process_one_work+0x2c8/0x7ec)
[<c0148990>] (process_one_work) from [<c0148f04>] (worker_thread+0x50/0x584)
[<c0148f04>] (worker_thread) from [<c0151300>] (kthread+0x13c/0x19c)
[<c0151300>] (kthread) from [<c0100108>] (ret_from_fork+0x14/0x2c)
Exception stack(0xc1cc1fb0 to 0xc1cc1ff8)
1fa0: 00000000 00000000 00000000
00000000
1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000
1fe0: 00000000 00000000 00000000 00000000 00000013 00000000
irq event stamp: 24393
hardirqs last enabled at (24399): [<c01a3b94>] vprintk_emit+0x270/0x2b4
hardirqs last disabled at (24404): [<c01a3b50>] vprintk_emit+0x22c/0x2b4
softirqs last enabled at (21880): [<c01016fc>] __do_softirq+0x4cc/0x5ec
softirqs last disabled at (21875): [<c01301c8>] irq_exit+0x1cc/0x200
---[ end trace 0fa33551718d6681 ]---
Console: switching to colour frame buffer device 146x42
------------[ cut here ]------------
WARNING: CPU: 0 PID: 7 at drivers/gpu/drm/drm_atomic_state_helper.c:494
drm_atomic_helper_connector_duplicate_state+0x60/0x68
Modules linked in:
CPU: 0 PID: 7 Comm: kworker/u4:0 Tainted: G W
5.16.0-rc5-next-20211213-00001-gac4117943791 #11072
Hardware name: Samsung Exynos (Flattened Device Tree)
Workqueue: events_unbound deferred_probe_work_func
[<c01110d0>] (unwind_backtrace) from [<c010cab0>] (show_stack+0x10/0x14)
[<c010cab0>] (show_stack) from [<c0b71b58>] (dump_stack_lvl+0x58/0x70)
[<c0b71b58>] (dump_stack_lvl) from [<c0126c9c>] (__warn+0x228/0x22c)
[<c0126c9c>] (__warn) from [<c0126d4c>] (warn_slowpath_fmt+0xac/0xb4)
[<c0126d4c>] (warn_slowpath_fmt) from [<c064e844>]
(drm_atomic_helper_connector_duplicate_state+0x60/0x68)
[<c064e844>] (drm_atomic_helper_connector_duplicate_state) from
[<c06685f4>] (drm_atomic_get_connector_state+0xd8/0x190)
[<c06685f4>] (drm_atomic_get_connector_state) from [<c066960c>]
(__drm_atomic_helper_set_config+0x2a0/0x368)
[<c066960c>] (__drm_atomic_helper_set_config) from [<c0680a20>]
(drm_client_modeset_commit_atomic+0x178/0x27c)
[<c0680a20>] (drm_client_modeset_commit_atomic) from [<c0680be0>]
(drm_client_modeset_commit_locked+0x48/0x1d0)
[<c0680be0>] (drm_client_modeset_commit_locked) from [<c0651c60>]
(drm_fb_helper_pan_display+0x90/0x1c4)
[<c0651c60>] (drm_fb_helper_pan_display) from [<c05b2ab0>]
(fb_pan_display+0xcc/0x138)
[<c05b2ab0>] (fb_pan_display) from [<c05bd024>] (bit_update_start+0x14/0x30)
[<c05bd024>] (bit_update_start) from [<c05bac30>] (fbcon_switch+0x2d0/0x3e4)
[<c05bac30>] (fbcon_switch) from [<c0609afc>] (redraw_screen+0x15c/0x22c)
[<c0609afc>] (redraw_screen) from [<c0609e84>]
(do_bind_con_driver+0x2b8/0x388)
[<c0609e84>] (do_bind_con_driver) from [<c060a2b0>]
(do_take_over_console+0x13c/0x1c8)
[<c060a2b0>] (do_take_over_console) from [<c05b90e0>]
(do_fbcon_takeover+0x74/0xcc)
[<c05b90e0>] (do_fbcon_takeover) from [<c05b38f0>]
(register_framebuffer+0x1c8/0x2d8)
[<c05b38f0>] (register_framebuffer) from [<c06524a4>]
(__drm_fb_helper_initial_config_and_unlock+0x440/0x65c)
[<c06524a4>] (__drm_fb_helper_initial_config_and_unlock) from
[<c063dfbc>] (drm_kms_helper_hotplug_event+0x24/0x30)
[<c063dfbc>] (drm_kms_helper_hotplug_event) from [<c0690fb8>]
(exynos_dsi_host_attach+0x170/0x2a4)
[<c0690fb8>] (exynos_dsi_host_attach) from [<c069d064>]
(tc358764_probe+0xe8/0x160)
[<c069d064>] (tc358764_probe) from [<c06b6fb0>] (really_probe+0x190/0x450)
[<c06b6fb0>] (really_probe) from [<c06b7314>]
(__driver_probe_device+0xa4/0x204)
[<c06b7314>] (__driver_probe_device) from [<c06b74a8>]
(driver_probe_device+0x34/0xd4)
[<c06b74a8>] (driver_probe_device) from [<c06b7884>]
(__device_attach_driver+0xb0/0x11c)
[<c06b7884>] (__device_attach_driver) from [<c06b5094>]
(bus_for_each_drv+0x70/0xb4)
[<c06b5094>] (bus_for_each_drv) from [<c06b6d80>]
(__device_attach+0xe0/0x178)
[<c06b6d80>] (__device_attach) from [<c06b5e0c>]
(bus_probe_device+0x88/0x90)
[<c06b5e0c>] (bus_probe_device) from [<c06b632c>]
(deferred_probe_work_func+0x4c/0xe8)
[<c06b632c>] (deferred_probe_work_func) from [<c0148990>]
(process_one_work+0x2c8/0x7ec)
[<c0148990>] (process_one_work) from [<c0148f04>] (worker_thread+0x50/0x584)
[<c0148f04>] (worker_thread) from [<c0151300>] (kthread+0x13c/0x19c)
[<c0151300>] (kthread) from [<c0100108>] (ret_from_fork+0x14/0x2c)
Exception stack(0xc1cc1fb0 to 0xc1cc1ff8)
1fa0: 00000000 00000000 00000000
00000000
1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000
1fe0: 00000000 00000000 00000000 00000000 00000013 00000000
irq event stamp: 24477
hardirqs last enabled at (24483): [<c01a3b94>] vprintk_emit+0x270/0x2b4
hardirqs last disabled at (24488): [<c01a3b50>] vprintk_emit+0x22c/0x2b4
softirqs last enabled at (21880): [<c01016fc>] __do_softirq+0x4cc/0x5ec
softirqs last disabled at (21875): [<c01301c8>] irq_exit+0x1cc/0x200
---[ end trace 0fa33551718d6682 ]---
Again, there is something wrong with connector registration:
# ./modetest -C -Mexynos
[ 69.085387] ------------[ cut here ]------------
[ 69.088593] WARNING: CPU: 1 PID: 1299 at
drivers/gpu/drm/drm_atomic_state_helper.c:494
drm_atomic_helper_connector_duplicate_state+0x60/0x68
[ 69.101211] Modules linked in: s5p_mfc exynos_gsc v4l2_mem2mem
videobuf2_dma_contig videobuf2_memops videobuf2_v4l2 videobuf2_common
videodev mc
[ 69.114158] CPU: 1 PID: 1299 Comm: modetest Tainted: G W
5.16.0-rc5-next-20211213-00002-ga010c46089fa #11073
[ 69.125201] Hardware name: Samsung Exynos (Flattened Device Tree)
[ 69.131279] [<c01110d0>] (unwind_backtrace) from [<c010cab0>]
(show_stack+0x10/0x14)
[ 69.139002] [<c010cab0>] (show_stack) from [<c0b71c00>]
(dump_stack_lvl+0x58/0x70)
[ 69.146554] [<c0b71c00>] (dump_stack_lvl) from [<c0126c9c>]
(__warn+0x228/0x22c)
[ 69.153932] [<c0126c9c>] (__warn) from [<c0126d4c>]
(warn_slowpath_fmt+0xac/0xb4)
[ 69.161396] [<c0126d4c>] (warn_slowpath_fmt) from [<c064e844>]
(drm_atomic_helper_connector_duplicate_state+0x60/0x68)
[ 69.172074] [<c064e844>]
(drm_atomic_helper_connector_duplicate_state) from [<c06685f4>]
(drm_atomic_get_connector_state+0xd8/0x190)
[ 69.183966] [<c06685f4>] (drm_atomic_get_connector_state) from
[<c066960c>] (__drm_atomic_helper_set_config+0x2a0/0x368)
[ 69.194814] [<c066960c>] (__drm_atomic_helper_set_config) from
[<c0680a20>] (drm_client_modeset_commit_atomic+0x178/0x27c)
[ 69.205839] [<c0680a20>] (drm_client_modeset_commit_atomic) from
[<c0680be0>] (drm_client_modeset_commit_locked+0x48/0x1d0)
[ 69.216949] [<c0680be0>] (drm_client_modeset_commit_locked) from
[<c0680d8c>] (drm_client_modeset_commit+0x24/0x40)
[ 69.227364] [<c0680d8c>] (drm_client_modeset_commit) from
[<c0652a94>] (__drm_fb_helper_restore_fbdev_mode_unlocked+0x64/0xc8)
[ 69.238735] [<c0652a94>]
(__drm_fb_helper_restore_fbdev_mode_unlocked) from [<c0655ec8>]
(drm_lastclose+0x30/0x4c)
[ 69.249065] [<c0655ec8>] (drm_lastclose) from [<c0655ff4>]
(drm_release+0x110/0x114)
[ 69.256789] [<c0655ff4>] (drm_release) from [<c02e6058>]
(__fput+0x88/0x258)
[ 69.263821] [<c02e6058>] (__fput) from [<c014df0c>]
(task_work_run+0x8c/0xc8)
[ 69.270939] [<c014df0c>] (task_work_run) from [<c010c30c>]
(do_work_pending+0x534/0x63c)
[ 69.279010] [<c010c30c>] (do_work_pending) from [<c0100088>]
(slow_work_pending+0xc/0x20)
[ 69.287169] Exception stack(0xc3e4bfb0 to 0xc3e4bff8)
[ 69.292205] bfa0: 00000000
0000001f e4a15400 00000000
[ 69.300364] bfc0: 00000001 00000003 00000000 00000006 00022188
00000000 b6f2c000 00000000
[ 69.308523] bfe0: b6e2daa0 bee27a98 0000e7c4 b6e2dac0 60000010 00000003
[ 69.315292] irq event stamp: 3229
[ 69.318419] hardirqs last enabled at (3237): [<c01a0cfc>]
__up_console_sem+0x50/0x60
[ 69.326275] hardirqs last disabled at (3252): [<c01a0ce8>]
__up_console_sem+0x3c/0x60
[ 69.334076] softirqs last enabled at (3250): [<c01016fc>]
__do_softirq+0x4cc/0x5ec
[ 69.341680] softirqs last disabled at (3245): [<c01301c8>]
irq_exit+0x1cc/0x200
[ 69.349066] ---[ end trace ab79782cf462efca ]---
could not get [ 69.355098] ------------[ cut here ]------------
[ 69.359389] WARNING: CPU: 1 PID: 1299 at
drivers/gpu/drm/drm_atomic_state_helper.c:494
drm_atomic_helper_connector_duplicate_state+0x60/0x68
[ 69.372111] Modules linked in: s5p_mfc exynos_gsc v4l2_mem2mem
videobuf2_dma_contig videobuf2_memops videobuf2_v4l2 videobuf2_common
videodev mc
[ 69.384964] CPU: 1 PID: 1299 Comm: modetest Tainted: G W
5.16.0-rc5-next-20211213-00002-ga010c46089fa #11073
[ 69.396017] Hardware name: Samsung Exynos (Flattened Device Tree)
[ 69.402094] [<c01110d0>] (unwind_backtrace) from [<c010cab0>]
(show_stack+0x10/0x14)
[ 69.409818] [<c010cab0>] (show_stack) from [<c0b71c00>]
(dump_stack_lvl+0x58/0x70)
[ 69.417370] [<c0b71c00>] (dump_stack_lvl) from [<c0126c9c>]
(__warn+0x228/0x22c)
[ 69.424748] [<c0126c9c>] (__warn) from [<c0126d4c>]
(warn_slowpath_fmt+0xac/0xb4)
[ 69.432213] [<c0126d4c>] (warn_slowpath_fmt) from [<c064e844>]
(drm_atomic_helper_connector_duplicate_state+0x60/0x68)
[ 69.442889] [<c064e844>]
(drm_atomic_helper_connector_duplicate_state) from [<c06685f4>]
(drm_atomic_get_connector_state+0xd8/0x190)
[ 69.454781] [<c06685f4>] (drm_atomic_get_connector_state) from
[<c066960c>] (__drm_atomic_helper_set_config+0x2a0/0x368)
[ 69.465630] [<c066960c>] (__drm_atomic_helper_set_config) from
[<c0680a20>] (drm_client_modeset_commit_atomic+0x178/0x27c)
[ 69.476654] [<c0680a20>] (drm_client_modeset_commit_atomic) from
[<c0680be0>] (drm_client_modeset_commit_locked+0x48/0x1d0)
[ 69.487764] [<c0680be0>] (drm_client_modeset_commit_locked) from
[<c0680d8c>] (drm_client_modeset_commit+0x24/0x40)
[ 69.498181] [<c0680d8c>] (drm_client_modeset_commit) from
[<c0652a94>] (__drm_fb_helper_restore_fbdev_mode_unlocked+0x64/0xc8)
[ 69.509551] [<c0652a94>]
(__drm_fb_helper_restore_fbdev_mode_unlocked) from [<c0655ec8>]
(drm_lastclose+0x30/0x4c)
[ 69.519881] [<c0655ec8>] (drm_lastclose) from [<c0655ff4>]
(drm_release+0x110/0x114)
[ 69.527605] [<c0655ff4>] (drm_release) from [<c02e6058>]
(__fput+0x88/0x258)
[ 69.534636] [<c02e6058>] (__fput) from [<c014df0c>]
(task_work_run+0x8c/0xc8)
[ 69.541754] [<c014df0c>] (task_work_run) from [<c012cb20>]
(do_exit+0x3f8/0xc1c)
[ 69.549133] [<c012cb20>] (do_exit) from [<c012e6b8>]
(do_group_exit+0x2c/0xa0)
[ 69.556337] [<c012e6b8>] (do_group_exit) from [<c013d09c>]
(get_signal+0x1d0/0xe6c)
[ 69.563976] [<c013d09c>] (get_signal) from [<c010bef4>]
(do_work_pending+0x11c/0x63c)
[ 69.571786] [<c010bef4>] (do_work_pending) from [<c0100088>]
(slow_work_pending+0xc/0x20)
[ 69.579945] Exception stack(0xc3e4bfb0 to 0xc3e4bff8)
[ 69.584982] bfa0: 00000008
0000005f 00000002 00023388
[ 69.593140] bfc0: 00000001 000232a8 00000000 00023398 0000003e
00000000 00023360 00000000
[ 69.601299] bfe0: 00023590 bee27ae8 00009ec0 00009e9c 80000010 ffffffff
[ 69.608150] irq event stamp: 3691
[ 69.611237] hardirqs last enabled at (3703): [<c015a6b0>]
finish_task_switch+0xc4/0x264
[ 69.619337] hardirqs last disabled at (3724): [<c01a0ce8>]
__up_console_sem+0x3c/0x60
[ 69.627123] softirqs last enabled at (3722): [<c01016fc>]
__do_softirq+0x4cc/0x5ec
[ 69.634818] softirqs last disabled at (3711): [<c01301c8>]
irq_exit+0x1cc/0x200
[ 69.642009] ---[ end trace ab79782cf462efcb ]---
connector 62: No such file or directory
Segmentation fault
This reminds me a discussion from last year:
https://lore.kernel.org/all/f22146de-1660-035c-c476-f7b3354de7cb@samsung.com/
Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland
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