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b541643572
we find sometimes hdmi will trigger a plugout irq when system shutdown, but actually it is connected, so when drm core run a connect->detect callback it will find the hdmi is on connected state, than run drm_fb_helper_hotplug_event, this drive all the drm system run again. But we are on the system shutdwon process, the running drm core may cause many problem. So we disable output poll to prevent drm_fb_helper_hotplug_event when system shutdown. And also the we should figure out why hdmi driver trigger the wrong plugout irq at shutdown process. Requesting system reboot [ 26.466261] cpu cpu0: min=816000, max=816000 [ 26.476177] dwhdmi-rockchip fe0a0000.hdmi: dw hdmi plug out [ 26.492452] rockchip_drm_platform_shutdown [ 26.579331] dw-mipi-dsi fe060000.dsi: [drm:dw_mipi_dsi_transfer] *ERROR* generic write fifo is full [ 26.580141] panel-simple-dsi fe060000.dsi.0: failed to write dcs cmd: -110 [ 26.581771] dw-mipi-dsi fe060000.dsi: [drm:dw_mipi_dsi_transfer] *ERROR* generic write fifo is full [ 26.582577] panel-simple-dsi fe060000.dsi.0: failed to write dcs cmd: -110 [ 26.667890] rkisp_hw fdff0000.rkisp: rkisp_hw_shutdown [ 26.675465] fan53555-regulator 0-001c: fan53555..... reset [ 26.676891] fan53555-regulator 0-001c: reset: force fan53555_reset ok! [ 26.677867] mpp_rkvdec2 fdf80200.rkvdec: shutdown device [ 26.678381] mpp_jpgdec fded0000.jpegd: shutdown device [ 26.678853] mpp-iep2 fdef0000.iep: shutdown device [ 26.679288] mpp_vepu2 fdee0000.vepu: shutdown device [ 26.679745] mpp_vdpu2 fdea0400.vdpu: shutdown device [ 26.680201] mpp_rkvenc fdf40000.rkvenc: shutdown device [ 26.680664] mpp_rkvenc fdf40000.rkvenc: shutdown success [ 26.777723] rockchip_drm_output_poll_changed [ 26.890773] rockchip-vop2 fe040000.vop: [drm:vop2_crtc_atomic_enable] Update mode to 1080x1920p60, type: 16 for vp1 [ 27.392083] rockchip-vop2 fe040000.vop: [drm:vop2_disable_all_planes_for_crtc] *ERROR* wait win close timeout [ 27.393012] dw-mipi-dsi fe060000.dsi: [drm:dw_mipi_dsi_encoder_enable] final DSI-Link bandwidth: 880 x 4 Mbps Change-Id: Ib1454636b1b35bf310252ab9469a107fcbf7e37c Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.