Add vblank interrupt.
Signed-off-by: Rongrong Zou <zourongrong@gmail.com>
Reviewed-by: NSean Paul <seanpaul@chromium.org>
Reviewed-by: NXinliang Liu <xinliang.liu@linaro.org>
Acked-by: NSean Paul <seanpaul@chromium.org>

VDAC(Video Digital-to-Analog converter) converts the RGB diaital data
stream from DE to VGA analog signals.
Signed-off-by: Rongrong Zou <zourongrong@gmail.com>
Reviewed-by: NSean Paul <seanpaul@chromium.org>
Reviewed-by: NXinliang Liu <xinliang.liu@linaro.org>
Acked-by: NSean Paul <seanpaul@chromium.org>

Add display engine function, crtc/plane is initialized here.
Signed-off-by: Rongrong Zou <zourongrong@gmail.com>
Reviewed-by: NSean Paul <seanpaul@chromium.org>
Reviewed-by: NXinliang Liu <xinliang.liu@linaro.org>
Acked-by: NSean Paul <seanpaul@chromium.org>

Add support for fbdev and kms fb management.
Signed-off-by: Rongrong Zou <zourongrong@gmail.com>
Reviewed-by: NSean Paul <seanpaul@chromium.org>
Reviewed-by: NXinliang Liu <xinliang.liu@linaro.org>
Acked-by: NSean Paul <seanpaul@chromium.org>

Hibmc have 32m video memory which can be accessed through PCIe by host,
we use ttm to manage these memory.
Signed-off-by: Rongrong Zou <zourongrong@gmail.com>
Reviewed-by: NSean Paul <seanpaul@chromium.org>
Reviewed-by: NXinliang Liu <xinliang.liu@linaro.org>
Acked-by: NSean Paul <seanpaul@chromium.org>

Add DRM master driver for Hisilicon Hibmc SoC which used for
Out-of-band management. Blow is the general hardware connection,
both the Hibmc and the host CPU are on the same mother board.

+----------+       +----------+
|          | PCIe  |  Hibmc   |
|host CPU( |<----->| display  |
|arm64,x86)|       |subsystem |
+----------+       +----------+
Signed-off-by: Rongrong Zou <zourongrong@gmail.com>
Reviewed-by: NSean Paul <seanpaul@chromium.org>
Reviewed-by: NXinliang Liu <xinliang.liu@linaro.org>
Acked-by: NSean Paul <seanpaul@chromium.org>

The function's behaviour was changed in 90844f00, without changing
its signature, causing people to keep using it the old way without
realising they were now leaking memory.
Rob Clark also noticed it was also allocating GFP_KERNEL memory in
atomic contexts, breaking them.

Instead of having to allocate GFP_ATOMIC memory and fixing the callers
to make them cleanup the memory afterwards, let's change the function's
signature by having the caller take care of the memory and passing it to
the function.
The new parameter is a single-field struct in order to enforce the size
of its buffer and help callers to correctly manage their memory.

Fixes: 90844f00 ("drm: make drm_get_format_name thread-safe")
Cc: Rob Clark <robdclark@gmail.com>
Cc: Christian König <christian.koenig@amd.com>
Acked-by: NChristian König <christian.koenig@amd.com>
Acked-by: NRob Clark <robdclark@gmail.com>
Acked-by: Sinclair Yeh <syeh@vmware.com> (vmwgfx)
Reviewed-by: NJani Nikula <jani.nikula@intel.com>
Suggested-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NEric Engestrom <eric@engestrom.ch>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20161112011309.9799-1-eric@engestrom.ch

If we define drm_compat_ioctl NULL on CONFIG_COMPAT=n, we don't have to
check for the config everywhere.
Reviewed-by: NPatrik Jakobsson <patrik.r.jakobsson@gmail.com>
Signed-off-by: NJani Nikula <jani.nikula@intel.com>
Signed-off-by: NSean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1478014844-27454-1-git-send-email-jani.nikula@intel.com

Convert DT component matching to use component_match_add_release().
Acked-by: NJyri Sarha <jsarha@ti.com>
Reviewed-by: NJyri Sarha <jsarha@ti.com>
Signed-off-by: NRussell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: NSean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/E1bwo6l-0005Io-Q1@rmk-PC.armlinux.org.uk

There are many reasons other than ENOMEM that drm_dev_init() can
fail. Return ERR_PTR rather than NULL to be able to distinguish
these in the caller.
Signed-off-by: NTom Gundersen <teg@jklm.no>
Signed-off-by: NSean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20160921145919.13754-2-teg@jklm.no

The plane .prepare_fb() and .cleanup_fb() helpers are optional, there's
no need to implement empty stubs, and no need to explicitly set the
function pointers to NULL either.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
[danvet: Resolved conflicts with Chris' patch.]
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

The drivers have to modify the atomic plane state during the prepare_fb
callback so they track allocations, reservations and dependencies for
this atomic operation involving this fb. In particular, how else do we
set the plane->fence from the framebuffer!
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20160818180017.20508-1-chris@chris-wilson.co.uk

This reverts commit d25bcfb8.

I somehow missed that it only compiles on arm64 and broke the driver
rather badly.
Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com>

It's deprecated and only should be used by drivers which still use
drm_platform_init, not by anyone else.

And indeed it's entirely unused and can be nuked.

This required a bit more fudging, but I guess kirin_dc_ops really
wants to operate on the platform_device, not something else. Also
bonus points for implementing abstraction, and then storing the vfunc
in a global variable.

Cc: Xinliang Liu <xinliang.liu@linaro.org>
Cc: Xinwei Kong <kong.kongxinwei@hisilicon.com>
Cc: Archit Taneja <architt@codeaurora.org>
Reviewed-by: NSean Paul <seanpaul@chromium.org>
Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1471034937-651-7-git-send-email-daniel.vetter@ffwll.ch

Since commit 4984979b ("drm/irq: simplify irq checks in
drm_wait_vblank"), the drm driver feature flag DRIVER_HAVE_IRQ is only
required for drivers that have an IRQ handler managed by the DRM core.
Some drivers, armada, etnaviv, kirin and sti, set this flag without
.irq_handler setup in drm_driver.  These drivers manage IRQ handler
by themselves and the flag DRIVER_HAVE_IRQ makes no sense there.

Drop the flag for these drivers to avoid confusion.
Signed-off-by: NShawn Guo <shawnguo@kernel.org>
Cc: Vincent Abriou <vincent.abriou@st.com>
Cc: Xinliang Liu <z.liuxinliang@hisilicon.com>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk> (for armada and etnaviv)
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1471331168-5601-1-git-send-email-shawnguo@kernel.org

Signed-off-by: NEric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: NJani Nikula <jani.nikula@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

Signed-off-by: NEric Engestrom <eric@engestrom.ch>
[danvet: Clarify that the returned pointer must be freed with
kfree().]
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

Vblank turn on should be called in crtc's enable callback.
And turn off called in crtc's disable callback.

Thanks to Daniel Vetter, this bug is reported by him.
Reported-by: NDaniel Vetter <daniel.vetter@intel.com>
Signed-off-by: NXinliang Liu <xinliang.liu@linaro.org>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20160630092300.141864-1-xinliang.liu@linaro.org

Vblank turn on should be called in crtc's enable callback.
And turn off called in crtc's disable callback.

Thanks to Daniel Vetter, this bug is reported by him.
Reported-by: NDaniel Vetter <daniel.vetter@intel.com>
Signed-off-by: NXinliang Liu <xinliang.liu@linaro.org>

 Add select HISI_KIRIN_DW_DSI to Kconfig.
 The DRM driver depends on dsi sub-driver.
Signed-off-by: NZoltan Kuscsik <zoltan.kuscsik@linaro.org>
Signed-off-by: NXinliang Liu <xinliang.liu@linaro.org>

In case of error, the function devm_clk_get() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check
should be replaced with IS_ERR().
Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn>
Reviewed-by: NChen Feng <puck.chen@hisilicon.com>

We already have a fallback in place to fill out the unique from
dev->unique, which is set to something reasonable in drm_dev_alloc.

Which means we only need to have a special set_busid for pci devices,
to be able to care the backwards compat code for drm 1.1 around, which
libdrm still needs.

While developing and testing this patch things blew up in really
interesting ways, and the code is rather confusing in naming things
between the kernel code, ioctl #defines and libdrm. For the next brave
dragon slayer, document all this madness properly in the userspace
interface section of gpu.tmpl.

v2: Make drm_dev_set_unique static and update kerneldoc.

v3: Entire rewrite, plus document what's going on for posterity in the
gpu docbook uapi section.

v4: Drop accidental amdgpu hunk (Emil).

v5: Drop accidental omapdrm vblank counter change (Emil).

v6: Rebase on top of the sphinx conversion.

Cc: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Cc: Emil Velikov <emil.l.velikov@gmail.com>
Tested-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> (virt_gpu)
Reviewed-by: NEmil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com>

Up to now, the recommendation was for drivers to call drm_dev_register()
followed by drm_connector_register_all(). Now that
drm_connector_register() is safe against multiple invocations, we can
move drm_connector_register_all() to drm_dev_register() and not suffer
from any backwards compatibility issues with drivers not following the
more rigorous init ordering.
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Xinliang Liu <z.liuxinliang@hisilicon.com>
Cc: Xinwei Kong <kong.kongxinwei@hisilicon.com>
Cc: Chen Feng <puck.chen@hisilicon.com>
Cc: David Airlie <airlied@linux.ie>
Cc: dri-devel@lists.freedesktop.org
Acked-by: NXinliang Liu <z.liuxinliang@hisilicon.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1466151923-1572-5-git-send-email-chris@chris-wilson.co.uk

atomic_flush seems to be the right place, but I'm not entirely sure
whether this will catch them all. It could be that when disabling the
crtc we'll miss the vblank.

While at it nuke the dummy functions.

v2: Be more robust and either arm, when the CRTC is on, or just send
the event out right away.

Cc: Xinliang Liu <xinliang.liu@linaro.org>
Cc: Xinwei Kong <kong.kongxinwei@hisilicon.com>
Cc: Archit Taneja <architt@codeaurora.org>
Reviewed-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1465388359-8070-5-git-send-email-daniel.vetter@ffwll.ch

No dev->struct_mutex anywhere to be seen.

Cc: Xinliang Liu <xinliang.liu@linaro.org>
Cc: Xinwei Kong <kong.kongxinwei@hisilicon.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com>
Acked-by: NXinwei Kong <kong.kongxinwei@hisilicon.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1464630800-30786-27-git-send-email-daniel.vetter@ffwll.ch

This patch fixed the bellow no DRM_INFO is printed issue:

if (!delay_count)
	DRM_INFO("phylock and phystopstateclklane is not ready.\n");

There will some printed issues with above info, under certain
circumstances:

If ((BIT(0) | BIT(2)) & val) is never true, break will not happen and
delay_count will be max u32 value (?), and no DRM_INFO is printed.

Also if ((BIT(0) | BIT(2)) & val) is true at the last possible
loop round, break happens, but now delay_count is already zero
( because of earlier delay_count-- ) and DRM_INFO is erroneously
printed.

Thanks to Juha Leppänen, he reports to me this issue.
Signed-off-by: NXinliang Liu <xinliang.liu@linaro.org>
Reported-by: NJuha Leppänen <juha_efku@dnainternet.net>

Remove deprecated drm_put_dev.
Clean up everything needed in unbind.
Thanks to Daniel Vetter, this issue is reported by him.
Acked-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Reported-by: NDaniel Vetter <daniel.vetter@intel.com>
Signed-off-by: NXinliang Liu <xinliang.liu@linaro.org>

Use drm_connector_register_all helper to register connectors.

Cc: Xinliang Liu <xinliang.liu@linaro.org>
Cc: Xinwei Kong <kong.kongxinwei@hisilicon.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com>

Add support for external HDMI bridge.

v8: None.
v7: None.
v6: None.
v5: None.
v4: None.
v3:
- Fix a typo: s/exteranl/external.
v2:
- Remove abtraction layer.
Signed-off-by: NXinliang Liu <xinliang.liu@linaro.org>
Signed-off-by: NXinwei Kong <kong.kongxinwei@hisilicon.com>
Reviewed-by: NArchit Taneja <architt@codeaurora.org>

Add DesignWare dsi host driver for hi6220 SoC.

v8: None.
v7: None.
v6: None.
v5: None.
v4: None.
v3: None.
v2:
- Remove abtraction layer.
Signed-off-by: NXinliang Liu <xinliang.liu@linaro.org>
Signed-off-by: NXinwei Kong <kong.kongxinwei@hisilicon.com>
Reviewed-by: NArchit Taneja <architt@codeaurora.org>

Add DesignWare MIPI DSI Host Controller v1.02 encoder driver
for hi6220 SoC.

v9: Fix module compile error.
v8: None.
v7:
- A few regs define clean up.
v6:
- Change "pclk_dsi" to "pclk".
v5: None.
v4: None.
v3:
- Rename file name to dw_drm_dsi.c
- Make encoder type as DRM_MODE_ENCODER_DSI.
- A few cleanup.
v2:
- Remove abtraction layer.
Signed-off-by: NXinliang Liu <xinliang.liu@linaro.org>
Signed-off-by: NXinwei Kong <kong.kongxinwei@hisilicon.com>
Signed-off-by: NAndy Green <andy.green@linaro.org>

Add cma Fbdev, Fbdev is legency and optional, you can enable/disable it by
configuring DRM_FBDEV_EMULATION.
Add hotplug.

v8: None.
v7: None.
v6: None.
v5: None.
v4: None.
v3: None.
v2:
- Use CONFIG_DRM_FBDEV_EMULATION instead of CONFIG_DRM_HISI_FBDEV.
Signed-off-by: NXinliang Liu <xinliang.liu@linaro.org>
Signed-off-by: NXinwei Kong <kong.kongxinwei@hisilicon.com>

Add vblank irq handle.

v8: None.
v7:
- Fix irq flag "DRIVER_IRQF_SHARED" to "IRQF_SHARED".
v6: None.
v5: None.
v4: None.
v3:
- Remove hisi_get_crtc_from_index func.
- A few cleanup.
v2:
- Remove abtraction layer.
Signed-off-by: NXinliang Liu <xinliang.liu@linaro.org>
Signed-off-by: NXinwei Kong <kong.kongxinwei@hisilicon.com>

Add plane funcs and helper funcs for ADE.

v8: None.
v7: None.
v6: None.
v5: None.
v4: None.
v3:
- A few cleanup.
v2:
- Remove abtraction layer.
Signed-off-by: NXinliang Liu <xinliang.liu@linaro.org>
Signed-off-by: NXinwei Kong <kong.kongxinwei@hisilicon.com>

Add crtc funcs and helper funcs for ADE.

v8: None.
v7:
- A few Regs define clean up and typo fixs.
v6:
- Cleanup reg-names dt parsing.
v5:
- Use syscon to access ADE media NOC QoS registers instread of directly
  writing registers.
- Use reset controller to reset ADE instead of directly writing registers.
v4: None.
v3:
- Make ade as the master driver.
- Use port to connect with encoder.
- A few cleanup.
v2:
- Remove abtraction layer.
Signed-off-by: NXinliang Liu <xinliang.liu@linaro.org>
Signed-off-by: NXinwei Kong <kong.kongxinwei@hisilicon.com>
Reviewed-by: NArchit Taneja <architt@codeaurora.org>

Add kirin DRM master driver for hi6220 SoC which used in HiKey board.
Add dumb buffer feature.
Add prime dmabuf feature.

v9: Add OF and ARM64 depends on in Kconfig
v8: None.
v7:
- Add config.mutex protection when accessing mode_config.connector_list.
- Clean up match data getting.
v6: None.
v5: None.
v4: None.
v3:
- Move and rename all the files to kirin sub-directory.
  So that we could separate different seires SoCs' driver.
- Replace drm_platform_init, load, unload implementation.
v2:
- Remove abtraction layer.
Signed-off-by: NXinliang Liu <xinliang.liu@linaro.org>
Signed-off-by: NXinwei Kong <kong.kongxinwei@hisilicon.com>