kernel/linux.git/drivers/gpu/drm/bridge, branch v4.9.57

drm/bridge: adv7511: Switch to using drm_kms_helper_hotplug_event()

2017-09-09T15:39:42+00:00

commit 6d5104c5a6b56385426e15047050584794bb6254 upstream. In chasing down a previous issue with EDID probing from calling drm_helper_hpd_irq_event() from irq context, Laurent noticed that the DRM documentation suggests that drm_kms_helper_hotplug_event() should be used instead. Thus this patch replaces drm_helper_hpd_irq_event() with drm_kms_helper_hotplug_event(), which requires we update the connector.status entry and only call _hotplug_event() when the status changes. Cc: David Airlie Cc: Archit Taneja Cc: Wolfram Sang Cc: Lars-Peter Clausen Cc: Laurent Pinchart Cc: dri-devel@lists.freedesktop.org Reviewed-by: Laurent Pinchart Tested-by: Laurent Pinchart Signed-off-by: John Stultz Signed-off-by: Archit Taneja Link: http://patchwork.freedesktop.org/patch/msgid/1484614372-15342-3-git-send-email-john.stultz@linaro.org Signed-off-by: Thong Ho Signed-off-by: Nhan Nguyen Signed-off-by: Greg Kroah-Hartman

drm/bridge: adv7511: Use work_struct to defer hotplug handing to out of irq context

2017-09-09T15:39:42+00:00

commit 518cb7057a59b9441336d2e88a396d52b6ab0cce upstream. I was recently seeing issues with EDID probing, where the logic to wait for the EDID read bit to be set by the IRQ wasn't happening and the code would time out and fail. Digging deeper, I found this was due to the fact that IRQs were disabled as we were running in IRQ context from the HPD signal. Thus this patch changes the logic to handle the HPD signal via a work_struct so we can be out of irq context. With this patch, the EDID probing on hotplug does not time out. Cc: David Airlie Cc: Archit Taneja Cc: Wolfram Sang Cc: Lars-Peter Clausen Cc: Laurent Pinchart Cc: dri-devel@lists.freedesktop.org Reviewed-by: Laurent Pinchart Tested-by: Laurent Pinchart Signed-off-by: John Stultz Signed-off-by: Archit Taneja Link: http://patchwork.freedesktop.org/patch/msgid/1484614372-15342-2-git-send-email-john.stultz@linaro.org Signed-off-by: Thong Ho Signed-off-by: Nhan Nguyen Signed-off-by: Greg Kroah-Hartman

drm/bridge: analogix dp: Fix runtime PM state on driver bind

2017-03-30T07:41:28+00:00

commit f0a8b49c03d22a511a601dc54b2a3425a41e35fa upstream. Analogix_dp_bind() can be called from component framework, which doesn't guarantee proper runtime PM state of the device during bind operation, so ensure that device is runtime active before doing any register access. This ensures that the power domain, to which DP module belongs, is turned on. While at it, also fix the unbalanced call to phy_power_on() in analogix_dp_bind() function. This patch solves the following kernel oops on Samsung Exynos5250 Snow board: Unhandled fault: imprecise external abort (0x406) at 0x00000000 pgd = c0004000 [00000000] *pgd=00000000 Internal error: : 406 [#1] PREEMPT SMP ARM Modules linked in: CPU: 0 PID: 75 Comm: kworker/0:2 Not tainted 4.9.0 #1046 Hardware name: SAMSUNG EXYNOS (Flattened Device Tree) Workqueue: events deferred_probe_work_func task: ee272300 task.stack: ee312000 PC is at analogix_dp_enable_sw_function+0x18/0x2c LR is at analogix_dp_init_dp+0x2c/0x50 ... [] (analogix_dp_enable_sw_function) from [] (analogix_dp_init_dp+0x2c/0x50) [] (analogix_dp_init_dp) from [] (analogix_dp_bind+0x184/0x42c) [] (analogix_dp_bind) from [] (component_bind_all+0xf0/0x218) [] (component_bind_all) from [] (exynos_drm_load+0x134/0x200) [] (exynos_drm_load) from [] (drm_dev_register+0xa0/0xd0) [] (drm_dev_register) from [] (drm_platform_init+0x58/0xb0) [] (drm_platform_init) from [] (try_to_bring_up_master+0x14c/0x188) [] (try_to_bring_up_master) from [] (component_add+0x88/0x138) [] (component_add) from [] (platform_drv_probe+0x50/0xb0) [] (platform_drv_probe) from [] (driver_probe_device+0x1f0/0x2a8) [] (driver_probe_device) from [] (bus_for_each_drv+0x44/0x8c) [] (bus_for_each_drv) from [] (__device_attach+0x9c/0x100) [] (__device_attach) from [] (bus_probe_device+0x84/0x8c) [] (bus_probe_device) from [] (deferred_probe_work_func+0x60/0x8c) [] (deferred_probe_work_func) from [] (process_one_work+0x120/0x318) [] (process_one_work) from [] (process_scheduled_works+0x28/0x38) [] (process_scheduled_works) from [] (worker_thread+0x204/0x4ac) [] (worker_thread) from [] (kthread+0xd8/0xf4) [] (kthread) from [] (ret_from_fork+0x14/0x3c) Code: e59035f0 e5935018 f57ff04f e3c55001 (f57ff04e) ---[ end trace 3d1d0d87796de344 ]--- Reviewed-by: Sean Paul Signed-off-by: Marek Szyprowski Signed-off-by: Archit Taneja Link: http://patchwork.freedesktop.org/patch/msgid/1483091866-1088-1-git-send-email-m.szyprowski@samsung.com Cc: Javier Martinez Canillas Signed-off-by: Greg Kroah-Hartman

drm/bridge: Drop drm_connector_unregister and call drm_connector_cleanup directly

2016-10-10T09:19:42+00:00

Drop unneeded drm_connector_unregister() and remove the unnecessary wrapper functions around drm_connector_cleanup(). Signed-off-by: Marek Vasut Cc: Daniel Vetter Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/20161005143133.5549-1-marex@denx.de

drm/bridge: Add RGB to VGA bridge support

2016-10-10T05:28:44+00:00

Some boards have an entirely passive RGB to VGA bridge, based on DACs implemented by resistor ladders. Those might or might not have an i2c bus routed to the VGA connector in order to access the screen EDIDs. Add a bridge that doesn't do anything but expose the modes available on the screen, either based on the EDIDs if available, or based on the XGA standards. Acked-by: Rob Herring Reviewed-by: Sean Paul Tested-by: Laurent Pinchart Signed-off-by: Maxime Ripard Signed-off-by: Archit Taneja Link: http://patchwork.freedesktop.org/patch/msgid/20160930143709.1388-3-maxime.ripard@free-electrons.com

drm/bridge: Call drm_connector_cleanup directly

2016-10-05T13:20:36+00:00

Remove the unnecessary wrapper functions around drm_connector_cleanup(). Signed-off-by: Marek Vasut Cc: Daniel Vetter Reviewed-by: Gustavo Padovan Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/20161004222331.7200-1-marex@denx.de

drm/bridge: analogix_dp: Add analogix_dp_psr_supported

2016-10-04T06:23:16+00:00

So users know whether PSR should be enabled or not. Cc: Yakir Yang Reviewed-by: Sean Paul Signed-off-by: Tomeu Vizoso Signed-off-by: Archit Taneja Link: http://patchwork.freedesktop.org/patch/msgid/1474639600-30090-1-git-send-email-tomeu.vizoso@collabora.com

Merge tag 'topic/drm-misc-2016-09-25' of git://anongit.freedesktop.org/drm-intel into drm-next

2016-09-28T00:28:23+00:00

- more core cleanup patches to prep drm_file to be used for kernel-internal contexts (David Herrmann) - more split-up+docs for drm_crtc.c - lots of small fixes and polish all over * tag 'topic/drm-misc-2016-09-25' of git://anongit.freedesktop.org/drm-intel: (37 commits) drm: bridge: analogix/dp: mark symbols static where possible drm/bochs: mark bochs_connector_get_modes() static drm/bridge: analogix_dp: Improve panel on time drm/bridge: analogix_dp: Don't read EDID if panel present drm/bridge: analogix_dp: Remove duplicated code Revert "drm/i2c: tda998x: don't register the connector" drm: Fix plane type uabi breakage dma-buf/sync_file: free fences array in num_fences is 1 drm/i2c: tda998x: don't register the connector drm: Don't swallow error codes in drm_dev_alloc() drm: Distinguish no name from ENOMEM in set_unique() drm: Remove dirty property from docs drm/doc: Document color space handling drm: Extract drm_color_mgmt.[hc] drm/doc: Polish plane composition property docs drm: Conslidate blending properties in drm_blend.[hc] drm/doc: Polish for drm_plane.[hc] drm: Extract drm_plane.[hc] drm/tilcdc: Add atomic and crtc headers to crtc.c drm: Fix typo in encoder docs ...

drm: bridge: analogix/dp: mark symbols static where possible

2016-09-25T20:59:02+00:00

We get 2 warnings when building kernel with W=1: drivers/gpu/drm/bridge/analogix/analogix_dp_core.c:1053:5: warning: no previous prototype for 'analogix_dp_get_modes' [-Wmissing-prototypes] drivers/gpu/drm/bridge/analogix/analogix_dp_core.c:1097:1: warning: no previous prototype for 'analogix_dp_detect' [-Wmissing-prototypes] In fact, both functions are only used in the file in which they are declared and don't need a declaration, but can be made static. So this patch marks both functions with 'static'. Signed-off-by: Baoyou Xie Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/1474788764-6069-1-git-send-email-baoyou.xie@linaro.org

drm/bridge: analogix_dp: Improve panel on time

2016-09-24T06:26:35+00:00

In order to reduce the time required to turn on the panel, this patch makes 2 assumptions: 1- In detect(): if there's a panel, we're connected. 2- In get_modes(): if there's a panel, let the panel driver decide if it should prepare/unprepare in order to get the modes. The first is straightforward, and shouldn't need further explanation. The second should eliminate the prepare/unprepare delays from get_modes() in most cases, since panels generally hardcode their modes in the driver as opposed to reading EDID. If a panel does need to read EDID, it should be responsible for ensuring it's in a state in which it can. Signed-off-by: Sean Paul