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path: root/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
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2022-07-02drm/rockchip: Fix an error handling path rockchip_dp_probe()Christophe JAILLET1-1/+9
Should component_add() fail, we should call analogix_dp_remove() in the error handling path, as already done in the remove function. Fixes: 152cce0006ab ("drm/bridge: analogix_dp: Split bind() into probe() and real bind()") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Link: https://patchwork.freedesktop.org/patch/msgid/b719d9061bb97eb85145fbd3c5e63f4549f2e13e.1655572071.git.christophe.jaillet@wanadoo.fr
2022-05-03drm/rockchip: Embed drm_encoder into rockchip_decoderSascha Hauer1-11/+21
The VOP2 driver needs rockchip specific information for a drm_encoder. This patch creates a struct rockchip_encoder with a struct drm_encoder embedded in it. This is used throughout the rockchip driver instead of struct drm_encoder directly. The information the VOP2 drivers needs is the of_graph endpoint node of the encoder. To ease bisectability this is added here. While at it convert the different encoder-to-driverdata macros to static inline functions in order to gain type safety and readability. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Tested-by: Michael Riesch <michael.riesch@wolfvision.net> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Link: https://patchwork.freedesktop.org/patch/msgid/20220422072841.2206452-3-s.hauer@pengutronix.de
2022-04-25drm: Rename dp/ to display/Thomas Zimmermann1-1/+1
Rename dp/ to display/ to account for additional display-related helpers, such as HDMI. Update all related include statements. No functional changes. Various drivers, such as i915 and amdgpu, use similar naming scheme by putting code for video-output standards into a local display/ directory. The new directory's name is aligned with this convention. v2: * update commit message (Javier) Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220421073108.19226-3-tzimmermann@suse.de
2022-01-25drm/connector: Fix typo in output formatMaxime Ripard1-1/+1
The HDMI specification mentions YCbCr everywhere, but our enums have YCrCb. Let's rename it to match. Signed-off-by: Maxime Ripard <maxime@cerno.tech> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220120151625.594595-5-maxime@cerno.tech
2022-01-17drm/dp: Move public DisplayPort headers into dp/Thomas Zimmermann1-1/+1
Move all public DisplayPort headers into dp/ and update users. No functional changes. v3: * rebased onto latest drm-tip Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Daniel Vetter <daniel@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20220114114535.29157-5-tzimmermann@suse.de
2021-09-21drm/rockchip: remove of_match_ptr() from analogix dp driverSouptick Joarder1-1/+1
Kernel test robot throws below warning when CONFIG_OF is not set. >> drivers/gpu/drm/rockchip/analogix_dp-rockchip.c:457:34: warning: unused variable 'rockchip_dp_dt_ids' [-Wunused-const-variable] static const struct of_device_id rockchip_dp_dt_ids[] = { Fixed it by removing of_match_ptr(). Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Cc: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Link: https://patchwork.freedesktop.org/patch/msgid/20210607184836.3502-1-jrdr.linux@gmail.com
2020-04-22Merge tag 'drm-misc-next-2020-04-14' of ↵Dave Airlie1-6/+3
git://anongit.freedesktop.org/drm/drm-misc into drm-next drm-misc-next for 5.8: UAPI Changes: - drm: error out with EBUSY when device has existing master - drm: rework SET_MASTER and DROP_MASTER perm handling Cross-subsystem Changes: - mm: export two symbols from slub/slob - fbdev: savage: fix -Wextra build warning - video: omap2: Use scnprintf() for avoiding potential buffer overflow Core Changes: - Remove drm_pci.h - drm_pci_{alloc/free)() are now legacy - Introduce managed DRM resourcesA - Allow drivers to subclass struct drm_framebuffer - Introduce struct drm_afbc_framebuffer and helpers - fbdev: remove return value from generic fbdev setup - Introduce simple-encoder helper - vram-helpers: set fence on plane - dp_mst: ACT timeout improvements - dp_mst: Remove drm_dp_mst_has_audio() - TTM: ttm_trace_dma_{map/unmap}() cleanups - dma-buf: add flag for PCIP2P support - EDID: Various improvements - Encoder: cleanup semantics of possible_clones and possible_crtcs - VBLANK documentation updates - Writeback documentation updates Driver Changes: - Convert several drivers to i2c_new_client_device() - Drop explicit drm_mode_config_cleanup() calls from drivers - Auto-release device structures with drmm_add_final_kfree() - Init bfdev console after registering DRM device - Make various .debugfs functions return 0 unconditionally; ignore errors - video: Use scnprintf() to avoid buffer overflows - Convert drivers to simple encoders - drm/amdgpu: note that we can handle peer2peer DMA-buf - drm/amdgpu: add support for exporting VRAM using DMA-buf v3 - drm/kirin: Revert change to register connectors - drm/lima: Add optional devfreq and cooling device support - drm/lima: Various improvements wrt. task handling - drm/panel: nt39016: Support multiple modes and 50Hz - drm/panel: Support Leadtek LTK050H3146W - drm/rockchip: Add support for afbc - drm/virtio: Various cleanups - drm/hisilicon/hibmc: Enforce 128-byte stride alignment - drm/qxl: Fix notify port address of cursor ring buffer - drm/sun4i: Improvements to format handling - drm/bridge: dw-hdmi: Various improvements Signed-off-by: Dave Airlie <airlied@redhat.com> From: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20200414090738.GA16827@linux-uq9g
2020-04-09drm/bridge: analogix_dp: Split bind() into probe() and real bind()Marek Szyprowski1-17/+19
Analogix_dp driver acquires all its resources in the ->bind() callback, what is a bit against the component driver based approach, where the driver initialization is split into a probe(), where all resources are gathered, and a bind(), where all objects are created and a compound driver is initialized. Extract all the resource related operations to analogix_dp_probe() and analogix_dp_remove(), then call them before/after registration of the device components from the main Exynos DP and Rockchip DP drivers. Also move the plat_data initialization to the probe() to make it available for the analogix_dp_probe() function. This fixes the multiple calls to the bind() of the DRM compound driver when the DP PHY driver is not yet loaded/probed: [drm] Exynos DRM: using 14400000.fimd device for DMA mapping operations exynos-drm exynos-drm: bound 14400000.fimd (ops fimd_component_ops [exynosdrm]) exynos-drm exynos-drm: bound 14450000.mixer (ops mixer_component_ops [exynosdrm]) exynos-dp 145b0000.dp-controller: no DP phy configured exynos-drm exynos-drm: failed to bind 145b0000.dp-controller (ops exynos_dp_ops [exynosdrm]): -517 exynos-drm exynos-drm: master bind failed: -517 ... [drm] Exynos DRM: using 14400000.fimd device for DMA mapping operations exynos-drm exynos-drm: bound 14400000.fimd (ops hdmi_enable [exynosdrm]) exynos-drm exynos-drm: bound 14450000.mixer (ops hdmi_enable [exynosdrm]) exynos-drm exynos-drm: bound 145b0000.dp-controller (ops hdmi_enable [exynosdrm]) exynos-drm exynos-drm: bound 14530000.hdmi (ops hdmi_enable [exynosdrm]) [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). Console: switching to colour frame buffer device 170x48 exynos-drm exynos-drm: fb0: exynosdrmfb frame buffer device [drm] Initialized exynos 1.1.0 20180330 for exynos-drm on minor 1 ... Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Andy Yan <andy.yan@rock-chips.com> Reviewed-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200310103427.26048-1-m.szyprowski@samsung.com (cherry picked from commit 83a196773b8bc6702f49df1eddc848180e350340) Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2020-04-02drm/rockchip: Use simple encoderThomas Zimmermann1-6/+3
The rockchip driver uses empty implementations for its encoders. Replace the code with the generic simple encoder. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20200305155950.2705-13-tzimmermann@suse.de
2019-09-20Merge tag 'drm-next-2019-09-18' of git://anongit.freedesktop.org/drm/drmLinus Torvalds1-56/+60
Pull drm updates from Dave Airlie: "This is the main pull request for 5.4-rc1 merge window. I don't think there is anything outstanding so next week should just be fixes, but we'll see if I missed anything. I landed some fixes earlier in the week but got delayed writing summary and sending it out, due to a mix of sick kid and jetlag! There are some fixes pending, but I'd rather get the main merge out of the way instead of delaying it longer. It's also pretty large in commit count and new amd header file size. The largest thing is four new amdgpu products (navi12/14, arcturus and renoir APU support). Otherwise it's pretty much lots of work across the board, i915 has started landing tigerlake support, lots of icelake fixes and lots of locking reworking for future gpu support, lots of header file rework (drmP.h is nearly gone), some old legacy hacks (DRM_WAIT_ON) have been put into the places they are needed. uapi: - content protection type property for HDCP core: - rework include dependencies - lots of drmP.h removals - link rate calculation robustness fix - make fb helper map only when required - add connector->DDC adapter link - DRM_WAIT_ON removed - drop DRM_AUTH usage from drivers dma-buf: - reservation object fence helper dma-fence: - shrink dma_fence struct - merge signal functions - store timestamps in dma_fence - selftests ttm: - embed drm_get_object struct into ttm_buffer_object - release_notify callback bridges: - sii902x - audio graph card support - tc358767 - aux data handling rework - ti-snd64dsi86 - debugfs support, DSI mode flags support panels: - Support for GiantPlus GPM940B0, Sharp LQ070Y3DG3B, Ortustech COM37H3M, Novatek NT39016, Sharp LS020B1DD01D, Raydium RM67191, Boe Himax8279d, Sharp LD-D5116Z01B - TI nspire, NEC NL8048HL11, LG Philips LB035Q02, Sharp LS037V7DW01, Sony ACX565AKM, Toppoly TD028TTEC1 Toppoly TD043MTEA1 i915: - Initial tigerlake platform support - Locking simplification work, general all over refactoring. - Selftests - HDCP debug info improvements - DSI properties - Icelake display PLL fixes, colorspace fixes, bandwidth fixes, DSI suspend/resume - GuC fixes - Perf fixes - ElkhartLake enablement - DP MST fixes - GVT - command parser enhancements amdgpu: - add wipe memory on release flag for buffer creation - Navi12/14 support (may be marked experimental) - Arcturus support - Renoir APU support - mclk DPM for Navi - DC display fixes - Raven scatter/gather support - RAS support for GFX - Navi12 + Arcturus power features - GPU reset for Picasso - smu11 i2c controller support amdkfd: - navi12/14 support - Arcturus support radeon: - kexec fix nouveau: - improved display color management - detect lack of GPU power cables vmwgfx: - evicition priority support - remove unused security feature msm: - msm8998 display support - better async commit support for cursor updates etnaviv: - per-process address space support - performance counter fixes - softpin support mcde: - DCS transfers fix exynos: - drmP.h cleanup lima: - reduce logging kirin: - misc clenaups komeda: - dual-link support - DT memory regions hisilicon: - misc fixes imx: - IPUv3 image converter fixes - 32-bit RGB V4L2 pixel format support ingenic: - more support for panel related cases mgag200: - cursor support fix panfrost: - export GPU features register to userspace - gpu heap allocations - per-fd address space support pl111: - CLD pads wiring support removed from DT rockchip: - rework to use DRM PSR helpers - fix bug in VOP_WIN_GET macro - DSI DT binding rework sun4i: - improve support for color encoding and range - DDC enabled GPIO tinydrm: - rework SPI support - improve MIPI-DBI support - moved to drm/tiny vkms: - rework CRC tracking dw-hdmi: - get_eld and i2s improvements gm12u320: - misc fixes meson: - global code cleanup - vpu feature detect omap: - alpha/pixel blend mode properties rcar-du: - misc fixes" * tag 'drm-next-2019-09-18' of git://anongit.freedesktop.org/drm/drm: (2112 commits) drm/nouveau/bar/gm20b: Avoid BAR1 teardown during init drm/nouveau: Fix ordering between TTM and GEM release drm/nouveau/prime: Extend DMA reservation object lock drm/nouveau: Fix fallout from reservation object rework drm/nouveau/kms/nv50-: Don't create MSTMs for eDP connectors drm/i915: Use NOEVICT for first pass on attemping to pin a GGTT mmap drm/i915: to make vgpu ppgtt notificaiton as atomic operation drm/i915: Flush the existing fence before GGTT read/write drm/i915: Hold irq-off for the entire fake lock period drm/i915/gvt: update RING_START reg of vGPU when the context is submitted to i915 drm/i915/gvt: update vgpu workload head pointer correctly drm/mcde: Fix DSI transfers drm/msm: Use the correct dma_sync calls harder drm/msm: remove unlikely() from WARN_ON() conditions drm/msm/dsi: Fix return value check for clk_get_parent drm/msm: add atomic traces drm/msm/dpu: async commit support drm/msm: async commit support drm/msm: split power control from prepare/complete_commit drm/msm: add kms->flush_commit() ...
2019-08-05drm/rockchip: Suspend DP lateDouglas Anderson1-1/+1
In commit fe64ba5c6323 ("drm/rockchip: Resume DP early") we moved resume to be early but left suspend at its normal time. This seems like it could be OK, but casues problems if a suspend gets interrupted partway through. The OS only balances matching suspend/resume levels. ...so if suspend was called then resume will be called. If suspend late was called then resume early will be called. ...but if suspend was called resume early might not get called. This leads to an unbalance in the clock enables / disables. Lets take the simple fix and just move suspend to be late to match. This makes the PM core take proper care in keeping things balanced. Fixes: fe64ba5c6323 ("drm/rockchip: Resume DP early") Signed-off-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Sean Paul <seanpaul@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/20190802184616.44822-1-dianders@chromium.org
2019-07-26drm/rockchip: Use the helpers for PSRSean Paul1-50/+56
Instead of rolling our own implementation for tracking when PSR should be [in]active, use the new self refresh helpers to do the heavy lifting. Changes in v2: - updated to reflect changes made in the helpers Changes in v3: - use the new atomic hooks to inspect crtc state instead of needing conn state (Daniel) Changes in v4: - Use Laurent's get_new_connector_for_encoder helper (Daniel) - Exit vop disable early if it's already off Changes in v5: - Rebase on latest drm-misc-next - Resolve conflict with s/edp_vsc_psr/dp_sdp/ rename - Resolve conflict with drm_atomic.h header inclusion Link to v1: https://patchwork.freedesktop.org/patch/msgid/20190228210939.83386-4-sean@poorly.run Link to v2: https://patchwork.freedesktop.org/patch/msgid/20190326204509.96515-3-sean@poorly.run Link to v3: https://patchwork.freedesktop.org/patch/msgid/20190502194956.218441-9-sean@poorly.run Link to v4: https://patchwork.freedesktop.org/patch/msgid/20190508160920.144739-9-sean@poorly.run Cc: Zain Wang <wzz@rock-chips.com> Cc: Tomasz Figa <tfiga@chromium.org> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Heiko Stuebner <heiko@sntech.de> [seanpaul resolved some conflicts with drmP.h work and Helen's async fixes] Signed-off-by: Sean Paul <seanpaul@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/20190611160844.257498-9-sean@poorly.run
2019-07-17drm/rockchip: drop use of drmP.hSam Ravnborg1-6/+4
Drop use of the deprecated drmP.h header file. While touching the list of include files move the blocks so they follow the common pattern: \#include <linux/*> \#include <video/*> \#include <drm/*> \#include "" Within each block sort the include files. Add the includes needed to fix build after the removal of drmP.h. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Acked-by: Emil Velikov <emil.velikov@collabora.com> Cc: Sandy Huang <hjc@rock-chips.com> Cc: "Heiko Stübner" <heiko@sntech.de> Cc: David Airlie <airlied@linux.ie> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-rockchip@lists.infradead.org Link: https://patchwork.freedesktop.org/patch/msgid/20190716064220.18157-19-sam@ravnborg.org
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152Thomas Gleixner1-5/+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 or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@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
2018-04-24drm/rockchip: psr: Sanitize semantics of allow/inhibit APITomasz Figa1-2/+2
Currently both rockchip_drm_psr_activate() and _deactivate() only set the boolean "active" flag without actually making sure that hardware state complies with it. Since we are going to extend the usage of this API to properly lock PSR for the duration of atomic commits, we change the semantics in following way: - a counter is used to track the number of inhibit requests, - PSR is actually disabled in hardware on first inhibit request, - PSR enable work is scheduled on last allow request. The above allows using the API as a way to deterministically synchronize PSR state changes with other DRM events, i.e. atomic commits and cursor updates. As a nice side effect, the naming is sorted out and we have "inhibit" for stopping the software logic and "enable" for hardware state. Signed-off-by: Tomasz Figa <tfiga@chromium.org> Signed-off-by: Thierry Escande <thierry.escande@collabora.com> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180423105003.9004-26-enric.balletbo@collabora.com
2018-04-24drm/rockchip: analogix_dp: Do not call Analogix code before bindTomasz Figa1-0/+9
Driver callbacks, such as system suspend or resume can be called any time, specifically they can be called before the component bind callback. Let's use dp->adp pointer as a safeguard and skip calling Analogix entry points if it is an ERR_PTR(). Signed-off-by: Tomasz Figa <tfiga@chromium.org> Signed-off-by: Thierry Escande <thierry.escande@collabora.com> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Archit Taneja <architt@codeaurora.org> Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180423105003.9004-24-enric.balletbo@collabora.com
2018-04-24drm/bridge: analogix_dp: Split the platform-specific poweron in two partsDouglas Anderson1-2/+10
Some of the platform-specific stuff in rockchip_dp_poweron() needs to happen before the generic code. Some needs to happen after. Let's split the callback in two. Specifically we can't start doing PSR work until _after_ the whole controller is up, so don't set the enable until the end. Cc: Kristian H. Kristensen <hoegsberg@chromium.org> Signed-off-by: Douglas Anderson <dianders@chromium.org> [seanpaul added exynos change] Signed-off-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Thierry Escande <thierry.escande@collabora.com> Reviewed-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Archit Taneja <architt@codeaurora.org> Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180423105003.9004-23-enric.balletbo@collabora.com
2018-04-24drm/rockchip: pre dither down when output bpc is 8bitMark Yao1-0/+2
Some encoder have a crc verification check, crc check fail if input and output data is not equal. That means encoder input and output need use same color depth, vop can output 10bit data to encoder, but some panel only support 8bit depth, that would make crc check die. So pre dither down vop data to 8bit if panel's bpc is 8. Signed-off-by: Mark Yao <mark.yao@rock-chips.com> [seanpaul resolved conflict in rockchip_drm_vop.c] Signed-off-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Thierry Escande <thierry.escande@collabora.com> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Archit Taneja <architt@codeaurora.org> Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180423105003.9004-22-enric.balletbo@collabora.com
2018-04-24drm/rockchip: Restore psr->state when enable/disable psr failedzain wang1-5/+5
If we failed disable psr, it would hang the display until next psr cycle coming. So we should restore psr->state when it failed. Cc: Tomasz Figa <tfiga@chromium.org> Signed-off-by: zain wang <wzz@rock-chips.com> Signed-off-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Thierry Escande <thierry.escande@collabora.com> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Archit Taneja <architt@codeaurora.org> Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180423105003.9004-14-enric.balletbo@collabora.com
2018-03-14drm/bridge: analogix_dp: Don't change psr while bridge is disabledzain wang1-1/+1
There is a race between AUX CH bring-up and enabling bridge which will cause link training to fail. To avoid hitting it, don't change psr state while enabling the bridge. Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com> Cc: Sean Paul <seanpaul@chromium.org> Signed-off-by: zain wang <wzz@rock-chips.com> Signed-off-by: Caesar Wang <wxt@rock-chips.com> [seanpaul fixed up the commit message a bit and renamed *_supported to *_enabled] Signed-off-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Thierry Escande <thierry.escande@collabora.com> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Archit Taneja <architt@codeaurora.org> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Link: https://patchwork.freedesktop.org/patch/msgid/20180309222327.18689-4-enric.balletbo@collabora.com
2018-03-14drm/rockchip: Remove analogix psr workerSean Paul1-29/+2
Now that the spinlocks and timers are gone, we can remove the psr worker located in rockchip's analogix driver and do the enable/disable directly. This should simplify the code and remove races on disable. Cc: 征增 王 <wzz@rock-chips.com> Cc: Stéphane Marchesin <marcheu@chromium.org> Signed-off-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Thierry Escande <thierry.escande@collabora.com> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Link: https://patchwork.freedesktop.org/patch/msgid/20180309222327.18689-3-enric.balletbo@collabora.com
2018-03-09drm/rockchip: analogix_dp: set psr activate/deactivate when enable/disable ↵zain wang1-1/+6
bridge There's a race between when bridge_disable and when vop_crtc_disable are called. If the flush timer triggers a new psr work between these, we will operate eDP without power shutdowned by bridge_disable. In this case, moving activate/deactivate to enable/disable bridge to avoid it. Cc: Stéphane Marchesin <marcheu@chromium.org> Signed-off-by: zain wang <wzz@rock-chips.com> Signed-off-by: Caesar Wang <wxt@rock-chips.com> Signed-off-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Thierry Escande <thierry.escande@collabora.com> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Link: https://patchwork.freedesktop.org/patch/msgid/20180305222324.5872-2-enric.balletbo@collabora.com
2018-03-01drm/rockchip: analogix_dp: reorder psr_unregister call in unbindJeffy Chen1-1/+1
In bind the psr handler gets registered first before the core analogix_dp_bind() gets called. So it should be the other way around in unbind, first unbind the analogix_dp and then unregister the psr. Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com> Signed-off-by: Thierry Escande <thierry.escande@collabora.com> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Link: https://patchwork.freedesktop.org/patch/msgid/76025075.yWNtk1v57f@phil
2018-03-01drm/rockchip: analogix_dp: Add a sanity check for rockchip_drm_psr_register()Jeffy Chen1-3/+10
The rockchip_drm_psr_register() can fail, so add a sanity check for that. Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com> Signed-off-by: Thierry Escande <thierry.escande@collabora.com> [moved psr_unregister reordering in unbind to separate patch] Signed-off-by: Heiko Stuebner <heiko@sntech.de> Link: https://patchwork.freedesktop.org/patch/msgid/20180110162348.22765-4-thierry.escande@collabora.com
2018-03-01drm/bridge: analogix_dp: Fix connector and encoder cleanupJeffy Chen1-7/+5
Since we are initing connector in the core driver and encoder in the plat driver, let's clean them up in the right places. Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com> Signed-off-by: Thierry Escande <thierry.escande@collabora.com> Reviewed-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Link: https://patchwork.freedesktop.org/patch/msgid/20180110162348.22765-3-thierry.escande@collabora.com
2018-03-01drm/bridge: analogix: Do not use device's drvdataJeffy Chen1-20/+28
The driver that instantiates the bridge should own the drvdata, as all driver model callbacks (probe, remove, shutdown, PM ops, etc.) are also owned by its driver struct. Moreover, storing two different pointer types in driver data depending on driver initialization status is barely a good practice and in fact has led to many bugs in this driver. Let's clean up this mess and change Analogix entry points to simply accept some opaque struct pointer, adjusting their users at the same time to avoid breaking the compilation. Signed-off-by: Tomasz Figa <tfiga@chromium.org> Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com> Signed-off-by: Thierry Escande <thierry.escande@collabora.com> Reviewed-by: Andrzej Hajda <a.hajda@samsung.com> Reviewed-by: Sean Paul <seanpaul@chromium.org> Acked-by: Jingoo Han <jingoohan1@gmail.com> Acked-by: Archit Taneja <architt@codeaurora.org> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Link: https://patchwork.freedesktop.org/patch/msgid/20180110162348.22765-2-thierry.escande@collabora.com
2017-11-21Merge airlied/drm-next into drm-misc-nextDaniel Vetter1-8/+6
Bake in the conflict between the drm_print.h extraction and the addition of DRM_DEBUG_LEASES since we lost it a few too many times. Also fix a new use of drm_plane_helper_check_state in msm to follow Ville's conversion in commit a01cb8ba3f6282934cff65e89ab36b18b14cbe27 Author: Ville Syrjälä <ville.syrjala@linux.intel.com> Date: Wed Nov 1 22:16:19 2017 +0200 drm: Move drm_plane_helper_check_state() into drm_atomic_helper.c Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2017-11-13Merge tag 'drm-misc-fixes-2017-11-13' of ↵Dave Airlie1-8/+6
git://anongit.freedesktop.org/drm/drm-misc into drm-next Driver Changes: - qxl: Use a shadow bo as primary and blit to it to fix flicker (Gerd) - rockchip: Convert psr spinlock to mutex (Emil) Cc: Emil Renner Berthing <kernel@esmil.dk> Cc: Gerd Hoffmann <kraxel@redhat.com> * tag 'drm-misc-fixes-2017-11-13' of git://anongit.freedesktop.org/drm/drm-misc: drm/rockchip: analogix_dp: Use mutex rather than spinlock
2017-11-13drm/rockchip: analogix_dp: Use mutex rather than spinlockEmil Renner Berthing1-8/+6
On the Samsung Chromebook Plus I get this error with 4.14-rc3: BUG: scheduling while atomic: kworker/3:1/50/0x00000002 Modules linked in: CPU: 3 PID: 50 Comm: kworker/3:1 Not tainted 4.14.0-0.rc3-kevin #2 Hardware name: Google Kevin (DT) Workqueue: events analogix_dp_psr_work Call trace: [<ffffff80080873b0>] dump_backtrace+0x0/0x320 [<ffffff80080876e4>] show_stack+0x14/0x20 [<ffffff8008606d38>] dump_stack+0x9c/0xbc [<ffffff80080c6b5c>] __schedule_bug+0x4c/0x70 [<ffffff80086188c0>] __schedule+0x3f0/0x458 [<ffffff8008618960>] schedule+0x38/0xa0 [<ffffff800861c20c>] schedule_hrtimeout_range_clock+0x84/0xe8 [<ffffff800861c2a0>] schedule_hrtimeout_range+0x10/0x18 [<ffffff800861bcec>] usleep_range+0x64/0x78 [<ffffff8008415a6c>] analogix_dp_transfer+0x16c/0x340 [<ffffff8008412550>] analogix_dpaux_transfer+0x10/0x18 [<ffffff80083ceb14>] drm_dp_dpcd_access+0x4c/0xf0 [<ffffff80083cf614>] drm_dp_dpcd_write+0x1c/0x28 [<ffffff8008413b98>] analogix_dp_disable_psr+0x60/0xa8 [<ffffff800840da3c>] analogix_dp_psr_work+0x4c/0x90 [<ffffff80080bb09c>] process_one_work+0x1d4/0x348 [<ffffff80080bb258>] worker_thread+0x48/0x478 [<ffffff80080c11fc>] kthread+0x12c/0x130 [<ffffff8008084290>] ret_from_fork+0x10/0x18 Changing rockchip_dp_device::psr_lock to a mutex rather than spinlock seems to fix the issue. Signed-off-by: Emil Renner Berthing <kernel@esmil.dk> Tested-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Signed-off-by: Mark Yao <mark.yao@rock-chips.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171004175346.11956-1-kernel@esmil.dk
2017-10-20drm/rockchip: Fix build warning in analogix_dp-rockchip.cSean Paul1-1/+0
I didn't catch this before applying, just right after (of course). Fixes: ../drivers/gpu/drm/rockchip/analogix_dp-rockchip.c: In function ‘rockchip_dp_of_probe’: ../drivers/gpu/drm/rockchip/analogix_dp-rockchip.c:276:6: warning: unused variable ‘ret’ [-Wunused-variable] int ret; ^~~ Fixes: 102712a32ff5 ("drm/rockchip: analogix_dp: Remove unnecessary init code") Cc: Jeffy Chen <jeffy.chen@rock-chips.com> Cc: Mark Yao <mark.yao@rock-chips.com> Cc: Sean Paul <seanpaul@chromium.org> Cc: Heiko Stuebner <heiko@sntech.de> Cc: dri-devel@lists.freedesktop.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-rockchip@lists.infradead.org Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Sean Paul <seanpaul@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/20171020172557.54900-1-seanpaul@chromium.org
2017-10-20drm/rockchip: analogix_dp: Remove unnecessary init codeJeffy Chen1-21/+6
Remove unnecessary init code, since we would do it in the power_on() callback. Also move of parse code to probe(). Fixes: 9e32e16e9e98 ("drm: rockchip: dp: add rockchip platform dp driver") Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com> Acked-by: Mark Yao <mark.yao@rock-chips.com> Signed-off-by: Sean Paul <seanpaul@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/20171019034812.13768-3-jeffy.chen@rock-chips.com
2017-09-18drm/rockchip: Replace dev_* with DRM_DEV_*Haneen Mohammed1-13/+13
This patch replace instances of dev_info/err/debug with DRM_DEV_INFO/ERROR/WARN respectively inorder to use a drm-formatted specific log messages. Issue corrected with the help of the following Coccinelle script: @r@ @@ ( -dev_info +DRM_DEV_INFO | -dev_err +DRM_DEV_ERROR | -dev_dbg +DRM_DEV_DEBUG ) Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com> Signed-off-by: Mark Yao <mark.yao@rock-chips.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170915083603.GA18992@Haneen
2017-06-16BackMerge tag 'v4.12-rc5' into drm-nextDave Airlie1-12/+0
Linux 4.12-rc5 for nouveau fixes
2017-05-31drm/rockchip: Correct vop out_mode configureMark yao1-12/+0
Force vop output mode on encoder driver seem not a good idea, EDP, HDMI, DisplayPort all have 10bit input on rk3399, On non-10bit vop, vop 8bit output bit[0-7] connect to the encoder high 8bit [2-9]. So force RGB10 to RGB888 on vop driver would be better. And another problem, EDP check crtc id on atomic_check, but encoder maybe NULL, so out_mode configure would fail, it cause edp no display. Signed-off-by: Mark Yao <mark.yao@rock-chips.com> Reviewed-by: Jeffy Chen <jeffy.chen@rock-chips.com> Link: http://patchwork.freedesktop.org/patch/msgid/1495885416-22216-1-git-send-email-mark.yao@rock-chips.com
2017-05-02drm/rockchip: analogix_dp: Remove unused check and variablesJeffy Chen1-9/+1
Remove unused check and variables after: drm/rockchip: Set line flag config register in vop_crtc_enable Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com> Signed-off-by: Sean Paul <seanpaul@chromium.org> Link: http://patchwork.freedesktop.org/patch/msgid/1493469547-2121-1-git-send-email-jeffy.chen@rock-chips.com
2017-04-27drm/rockchip: Set line flag config register in vop_crtc_enableJeffy Chen1-2/+2
We need to set vop config done after update line flag config, it's a new requirement for chips newer than rk3368. Since we would only use line flag irq for vact_end, let's move it to vop_crtc_enable. Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com> Acked-by: Mark Yao <mark.yao@rock-chips.com Signed-off-by: Sean Paul <seanpaul@chromium.org> Link: http://patchwork.freedesktop.org/patch/msgid/1493276057-4516-1-git-send-email-jeffy.chen@rock-chips.com
2017-04-07drm/rockchip: analogix_dp: Disable clock when unbindingJeffy Chen1-1/+2
The clock is enabled when binding cdn dp. Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com> Signed-off-by: Sean Paul <seanpaul@chromium.org> Link: http://patchwork.freedesktop.org/patch/msgid/1491481885-13775-10-git-send-email-jeffy.chen@rock-chips.com
2017-04-07drm: convert drivers to use drm_of_find_panel_or_bridgeRob Herring1-22/+4
Similar to the previous commit, convert drivers open coding OF graph parsing to use drm_of_find_panel_or_bridge instead. This changes some error messages to debug messages (in the graph core). Graph connections are often "no connects" depending on the particular board, so we want to avoid spurious messages. Plus the kernel is not a DT validator. Signed-off-by: Rob Herring <robh@kernel.org> Reviewed-by: Archit Taneja <architt@codeaurora.org> Tested-by: Philipp Zabel <p.zabel@pengutronix.de> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> [seanpaul dropped rockchip changes since they're now obsolete] Signed-off-by: Sean Paul <seanpaul@chromium.org>
2017-03-24drm/rockchip: Refactor the component match logic.Jeffy Chen1-8/+1
Currently we are adding all components from the dts, if one of their drivers been disabled, we would not be able to bring up others. Refactor component match logic, follow exynos drm. Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com> Reviewed-by: Andrzej Hajda <a.hajda@samsung.com> Acked-by: Mark Yao <mark.yao@rock-chips.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Sean Paul <seanpaul@chromium.org> Link: http://patchwork.freedesktop.org/patch/msgid/1490152880-21855-1-git-send-email-jeffy.chen@rock-chips.com
2016-10-04drm/rockchip: analogix_dp: Refuse to enable PSR if panel doesn't support itTomeu Vizoso1-0/+3
There's no point in enabling PSR when the panel doesn't support it. This also avoids a problem when PSR gets enabled when a CRTC is being disabled, because sometimes in that situation the DSP_HOLD_VALID_INTR interrupt on which we wait will never arrive. This was observed on RK3288 with a panel without PSR (veyron-jaq Chromebook). It's very easy to reproduce by running the kms_rmfb test in IGT a few times. Cc: Yakir Yang <ykk@rock-chips.com> Reviewed-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com> Signed-off-by: Archit Taneja <architt@codeaurora.org> Link: http://patchwork.freedesktop.org/patch/msgid/1474639600-30090-2-git-send-email-tomeu.vizoso@collabora.com
2016-08-25Merge branch 'for-next' of git://people.freedesktop.org/~seanpaul/dogwood ↵Dave Airlie1-3/+67
into drm-next This pull request contains the following rockchip drm changes: - Introduce support for rk3399 vop/crtc - Add PSR framework to the rockchip driver - Implement PSR in the rockchip analogix edp driver - Fix panel on/off in analogix to avoid damaging panels - Some miscellaneous fixes to clean up logs and code readability * 'for-next' of git://people.freedesktop.org/~seanpaul/dogwood: drm/rockchip: analogix_dp: drop unnecessary probe deferral "error" print drm/rockchip: Enable vblank without event drm/rockchip: Improve analogix-dp psr handling drm/rockchip: A couple small fixes to psr drm/rockchip: Use a spinlock to protect psr state drm/rockchip: Don't use a delayed worker for psr state changes drm/rockchip: Convert psr_list_mutex to spinlock and use it drm/rockchip: analogix_dp: implement PSR function drm/bridge: analogix_dp: add the PSR function support drm/rockchip: add an common abstracted PSR driver drm/rockchip: vop: export line flag function drm/bridge: analogix_dp: Ensure the panel is properly prepared/unprepared dt-bindings: add compatible strings for big/little rockchip vops dt-bindings: sort Rockchip vop compatible by chip's number drm/rockchip: vop: add rk3399 vop support drm/rockchip: vop: introduce VOP_REG_MASK drm/rockchip: sort registers define by chip's number
2016-08-23drm/rockchip: analogix_dp: drop unnecessary probe deferral "error" printBrian Norris1-3/+1
This driver is the only user of of_drm_find_panel() which prints an error before doing probe deferral, yielding messages like this on boot, before eventually succeeding: [ 2.234271] [drm:rockchip_dp_probe] *ERROR* failed to find panel ... [ 4.797539] [drm:rockchip_dp_probe] *ERROR* failed to find panel ... Let's just drop the message. Signed-off-by: Brian Norris <briannorris@chromium.org> Signed-off-by: Sean Paul <seanpaul@chromium.org>
2016-08-23drm/rockchip: Improve analogix-dp psr handlingSean Paul1-5/+14
Remove the delayed worker, opting instead for the non-delayed variety. Also introduce a lock to ensure we don't have races with the worker and psr_state. Finally, cancel and wait for the worker to finish when disabling the bridge. Reviewed-by: Yakir Yang <ykk@rock-chips.com> Signed-off-by: Sean Paul <seanpaul@chromium.org>
2016-08-23drm/rockchip: analogix_dp: implement PSR functionYakir Yang1-0/+57
Alway enable the PSR function for Rockchip analogix_dp driver. If panel don't support PSR, then the core analogix_dp would ignore this setting. Signed-off-by: Yakir Yang <ykk@rock-chips.com> Signed-off-by: Sean Paul <seanpaul@chromium.org>
2016-08-23drm/rockchip: Delete unnecessary assignment for the field "owner"Markus Elfring1-1/+0
The field "owner" is set by the core. Thus delete an unneeded initialisation. Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Sean Paul <seanpaul@chromium.org> Link: http://patchwork.freedesktop.org/patch/msgid/41e48fd3-f713-7225-1df2-3b1f4758f949@users.sourceforge.net
2016-07-19drm/rockchip: analogix_dp: add missing clk_disable_unprepare() on errorWei Yongjun1-0/+2
Add the missing clk_disable_unprepare() before return in the error handling case. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Sean Paul <seanpaul@chromium.org>
2016-07-05drm/rockchip: analogix_dp: introduce the pclk for grfYakir Yang1-3/+20
For RK3399's GRF module, if we want to operate the graphic related grf registers, we need to enable the pclk_vio_grf which supply power for VIO GRF IOs, so it's better to introduce an optional grf clock in driver. Signed-off-by: Yakir Yang <ykk@rock-chips.com> Reviewed-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Tomasz Figa <tomasz.figa@chromium.com>
2016-07-05drm/rockchip: analogix_dp: update the comments about why need to hardcode ↵Yakir Yang1-11/+5
VOP output mode The hardware IC designed that VOP must output the RGB10 video format to eDP contoller, and if eDP panel only support RGB8, then eDP contoller should cut down the video data, not via VOP contoller, that's why we need to hardcode the VOP output mode to RGA10 here. Signed-off-by: Yakir Yang <ykk@rock-chips.com> Acked-by: Mark Yao <mark.yao@rock-chips.com> Reviewed-by: Tomasz Figa <tomasz.figa@chromium.com> Reviewed-by: Sean Paul <seanpaul@chromium.org>
2016-07-05drm/rockchip: analogix_dp: correct the connector display color format and bpcYakir Yang1-0/+18
Rockchip VOP couldn't output YUV video format for eDP controller, so when driver detect connector support YUV video format, we need to hack it down to RGB888. Signed-off-by: Yakir Yang <ykk@rock-chips.com> Acked-by: Mark Yao <mark.yao@rock-chips.com> Reviewed-by: Tomasz Figa <tomasz.figa@chromium.com> Reviewed-by: Sean Paul <seanpaul@chromium.org>