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path: root/drivers/gpu/drm/rockchip/cdn-dp-core.h
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2019-06-19treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 235Thomas Gleixner1-9/+1
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 53 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190602204653.904365654@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-01-24drm: Split out drm_probe_helper.hDaniel Vetter1-1/+1
Having the probe helper stuff (which pretty much everyone needs) in the drm_crtc_helper.h file (which atomic drivers should never need) is confusing. Split them out. To make sure I actually achieved the goal here I went through all drivers. And indeed, all atomic drivers are now free of drm_crtc_helper.h includes. v2: Make it compile. There was so much compile fail on arm drivers that I figured I'll better not include any of the acks on v1. v3: Massive rebase because i915 has lost a lot of drmP.h includes, but not all: Through drm_crtc_helper.h > drm_modeset_helper.h -> drmP.h there was still one, which this patch largely removes. Which means rolling out lots more includes all over. This will also conflict with ongoing drmP.h cleanup by others I expect. v3: Rebase on top of atomic bochs. v4: Review from Laurent for bridge/rcar/omap/shmob/core bits: - (re)move some of the added includes, use the better include files in other places (all suggested from Laurent adopted unchanged). - sort alphabetically v5: Actually try to sort them, and while at it, sort all the ones I touch. v6: Rebase onto i915 changes. v7: Rebase once more. Acked-by: Harry Wentland <harry.wentland@amd.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Acked-by: Benjamin Gaignard <benjamin.gaignard@linaro.org> Acked-by: Jani Nikula <jani.nikula@intel.com> Acked-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com> Acked-by: CK Hu <ck.hu@mediatek.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Liviu Dudau <liviu.dudau@arm.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Cc: linux-arm-kernel@lists.infradead.org Cc: virtualization@lists.linux-foundation.org Cc: etnaviv@lists.freedesktop.org Cc: linux-samsung-soc@vger.kernel.org Cc: intel-gfx@lists.freedesktop.org Cc: linux-mediatek@lists.infradead.org Cc: linux-amlogic@lists.infradead.org Cc: linux-arm-msm@vger.kernel.org Cc: freedreno@lists.freedesktop.org Cc: nouveau@lists.freedesktop.org Cc: spice-devel@lists.freedesktop.org Cc: amd-gfx@lists.freedesktop.org Cc: linux-renesas-soc@vger.kernel.org Cc: linux-rockchip@lists.infradead.org Cc: linux-stm32@st-md-mailman.stormreply.com Cc: linux-tegra@vger.kernel.org Cc: xen-devel@lists.xen.org Link: https://patchwork.freedesktop.org/patch/msgid/20190117210334.13234-1-daniel.vetter@ffwll.ch
2017-02-05drm/rockchip: cdn-dp: retry to check sink countChris Zhong1-0/+1
Sometimes the Dock is disconnected, but cdn_dp_encoder_disable is not triggered by DRM. For example, unplug the Dock in console mode, and re-plug it again, the cdn_dp_event_work will try to get the sink count of Dock, since the DP is still active. But the Dock has been powered down, it need re-power on, and wait for a while until it is ready to DPCD communication. Signed-off-by: Chris Zhong <zyw@rock-chips.com>
2017-02-05drm/rockchip: cdn-dp: Do not run worker while suspendedGuenter Roeck1-0/+1
If the driver is in suspended mode, the dp block may be disabled, and chip registers may not be accessible. Yet, the worker may be triggered in this situation by an extcon event. If that happens, the following crash will be seen. cdn-dp fec00000.dp: [drm:cdn_dp_pd_event_work] *ERROR* Enable dp failed -19 cdn-dp fec00000.dp: [drm:cdn_dp_pd_event_work] Connected, not enabled. Enabling cdn Bad mode in Error handler detected, code 0xbf000002 -- SError CPU: 1 PID: 10357 Comm: kworker/1:2 Not tainted 4.4.21-05903-ge0514ea #1 Hardware name: Google Kevin (DT) Workqueue: events cdn_dp_pd_event_work task: ffffffc0cda67080 ti: ffffffc0b9b80000 task.ti: ffffffc0b9b80000 PC is at cdn_dp_clock_reset+0x30/0xa8 LR is at cdn_dp_enable+0x1e0/0x69c ... Call trace: [<ffffffc0005a7e24>] cdn_dp_pd_event_work+0x58/0x3f4 [<ffffffc0002397f0>] process_one_work+0x240/0x424 [<ffffffc00023a28c>] worker_thread+0x2fc/0x424 [<ffffffc00023f5fc>] kthread+0x10c/0x114 [<ffffffc000203dd0>] ret_from_fork+0x10/0x40 Problem is two-fold: The worker should not run while suspended, and the suspend function should not call cdn_dp_disable() while the worker is running. Signed-off-by: Guenter Roeck <groeck@chromium.org> Signed-off-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Chris Zhong <zyw@rock-chips.com>
2017-02-05drm/rockchip: cdn-dp: add cdn DP support for rk3399Chris Zhong1-0/+110
Add support for cdn DP controller which is embedded in the rk3399 SoCs. The DP is compliant with DisplayPort Specification, Version 1.3, This IP is compatible with the rockchip type-c PHY IP. There is a uCPU in DP controller, it need a firmware to work, please put the firmware file to /lib/firmware/rockchip/dptx.bin. The uCPU in charge of aux communication and link training, the host use mailbox to communicate with the ucpu. The dclk pin_pol of vop must not be invert for DP. Signed-off-by: Chris Zhong <zyw@rock-chips.com> [seanpaul fixed up some races between the worker and modeset] [seanpaul squashed ~15 commits from chromium.org gerrit] Signed-off-by: Sean Paul <seanpaul@chromium.org> [groeck fixed compilation errors when building as module] Signed-off-by: Guenter Roeck <groeck@chromium.org>