dma-fence: Store the timestamp in the same union as the cb_list

The timestamp and the cb_list are mutually exclusive, the cb_list can
only be added to prior to being signaled (and once signaled we drain),
while the timestamp is only valid upon being signaled. Both the
timestamp and the cb_list are only valid while the fence is alive, and
as soon as no references are held can be replaced by the rcu_head.

By reusing the union for the timestamp, we squeeze the base dma_fence
struct to 64 bytes on x86-64.

v2: Sort the union chronologically

Suggested-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Christian König <christian.koenig@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>.
Link: https://patchwork.freedesktop.org/patch/msgid/20190817153022.5749-1-chris@chris-wilson.co.uk

dma-fence: Simply wrap dma_fence_signal_locked with dma_fence_signal

Currently dma_fence_signal() tries to avoid the spinlock and only takes
it if absolutely required to walk the callback list. However, to allow
for some users to surreptitiously insert lazy signal callbacks that
do not depend on enabling the signaling mechanism around every fence,
we always need to notify the callbacks on signaling. As such, we will
always need to take the spinlock and dma_fence_signal() effectively
becomes a clone of dma_fence_signal_locked().

v2: Update the test_and_set_bit() before entering the spinlock.
v3: Drop the test_[and_set]_bit() before the spinlock, it's a caller
error so expected to be very unlikely.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Christian König <christian.koenig@amd.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190817152300.5370-1-chris@chris-wilson.co.uk

dma-fence: Avoid list_del during fence->cb_list iteration

Before we notify the fence signal callback, we remove the cb from the
list. However, since we are processing the entire list from underneath
the spinlock, we do not need to individual delete each element, but can
simply reset the link and the entire list.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Christian König <christian.koenig@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190817144736.7826-4-chris@chris-wilson.co.uk

dma-fence: Shrink size of struct dma_fence

Rearrange the couple of 32-bit atomics hidden amongst the field of
pointers that unnecessarily caused the compiler to insert some padding,
shrinks the size of the base struct dma_fence from 80 to 72 bytes on
x86-64.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Christian König <christian.koenig@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190817144736.7826-3-chris@chris-wilson.co.uk

drm/panel: tpo-td043mtea1: remove redundant assignment

Variable val is initialized to a value in a for-loop that is
never read and hence it is redundant. Remove it.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190817122124.29650-1-colin.king@canonical.com

drm/omap: displays: Remove unused panel drivers

drm_panel-based drivers for the ACX565AKM, LB035Q02, LS037V7DW01,
NL8048HL11, TD028TTEC1 and TD043MTEA1 are available, remove the
omapdrm-specific drivers.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190816122228.9475-3-laurent.pinchart@ideasonboard.com

video: omapfb2: Make standard and custom panel drivers mutually exclusive

Standard DRM panel drivers for several panels used by omapfb2 are now
available. Their module name clashes with the modules from
drivers/video/fbdev/omap2/omapfb/displays, part of the deprecated omapfb2
fbdev driver. As omapfb2 can only be compiled when the omapdrm driver is
disabled, and the DRM panel drivers are useless in that case, make the
omapfb2 panels depend on the standard DRM panels being disabled to fix
the name clash.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Fixes: dc2e1e5b279966 ("drm/panel: Add driver for the Toppoly TD043MTEA1 panel")
Fixes: 415b8dd0871188 ("drm/panel: Add driver for the Toppoly TD028TTEC1 panel")
Fixes: 1c8fc3f0c5d280 ("drm/panel: Add driver for the Sony ACX565AKM panel")
Fixes: c9cf4c2a3bd35f ("drm/panel: Add driver for the Sharp LS037V7DW01 panel")
Fixes: df439abe650177 ("drm/panel: Add driver for the NEC NL8048HL11 panel")
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org> [added tags]
Link: https://patchwork.freedesktop.org/patch/msgid/20190816122228.9475-2-laurent.pinchart@ideasonboard.com

dma-buf: Restore seqlock around dma_resv updates

This reverts
67c97fb79a7f ("dma-buf: add reservation_object_fences helper")
dd7a7d1ff2f1 ("drm/i915: use new reservation_object_fences helper")
0e1d8083bddb ("dma-buf: further relax reservation_object_add_shared_fence")
5d344f58da76 ("dma-buf: nuke reservation_object seq number")

The scenario that defeats simply grabbing a set of shared/exclusive
fences and using them blissfully under RCU is that any of those fences
may be reallocated by a SLAB_TYPESAFE_BY_RCU fence slab cache. In this
scenario, while keeping the rcu_read_lock we need to establish that no
fence was changed in the dma_resv after a read (or full) memory barrier.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190814182401.25009-1-chris@chris-wilson.co.uk

drm/panel: Add driver for the Toppoly TD043MTEA1 panel

This panel is used on the OMAP3 Pandora.

The code is based on the omapdrm-specific panel-tpo-td043mtea1 driver.

v2:
- fix checkpatch warnings
  o (lcd == NULL) => (!lcd) (sam)
  o alignment to open '(' (sam)

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190813201101.30980-10-laurent.pinchart@ideasonboard.com

drm/panel: Add driver for the Toppoly TD028TTEC1 panel

This panel is used on the OpenMoko Neo FreeRunner and Neo 1973.

The code is based on the omapdrm-specific panel-tpo-td028ttec1 driver.

v2:
- fix checkpatch warnings:
  o (lcd == NULL) => (!lcd) (sam)
  o (1 << X) => BIT(X) (sam)

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190813201101.30980-9-laurent.pinchart@ideasonboard.com

drm/panel: Add driver for the Sony ACX565AKM panel

This panel is used on the Nokia N900.

The code is based on the omapdrm-specific panel-sony-acx565akm driver.
The hardware-related logic has been changed as little as possible to
avoid regressions as hardware availability is lacking to test the
changes. Follow-up patches should address the items listed in the TODO
list.

v2:
- fix checkpatch warning (lcd == NULL) => (!lcd) (sam)

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190813201101.30980-8-laurent.pinchart@ideasonboard.com

drm/panel: Add driver for the Sharp LS037V7DW01 panel

This panel is used on the TI SDP3430 board.

The code is based on the omapdrm-specific panel-sharp-ls037v7dw01
driver.

v2:
- fix checkpatch warning (lcd == NULL) => (!lcd) (sam)
- drop __exit_p() from remove. It caused a build warning.
  And no other panel drivers needs this (sam)

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190813201101.30980-7-laurent.pinchart@ideasonboard.com

drm/panel: Add driver for the NEC NL8048HL11 panel

This panel is used on the Zoom2/3/3630 SDP boards.

The code is based on the omapdrm-specific panel-nec-nl8048hl11 driver

v2:
- fix checkpatch warning (lcd == NULL) => (!lcd) (sam)

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190813201101.30980-6-laurent.pinchart@ideasonboard.com

drm/panel: Add driver for the LG Philips LB035Q02 panel

This panel is used on the Gumstix Overo Palo35.

The code is based on the omapdrm-specific panel-lgphilips-lb035q02
driver.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190813201101.30980-5-laurent.pinchart@ideasonboard.com

dt-bindings: display: panel: Add bindings for NEC NL8048HL11 panel

The NEC NL8048HL11 is a 10.4cm WVGA (800x480) panel with a 24-bit RGB
parallel data interface and an SPI control interface.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190813201101.30980-4-laurent.pinchart@ideasonboard.com

dt-bindings: Add legacy 'toppoly' vendor prefix

The 'toppoly' vendor prefix is in use and refers to TPO, whose DT vendor
prefix is already defined as 'tpo'. Add 'toppoly' as an alternative and
document it as legacy.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190813201101.30980-3-laurent.pinchart@ideasonboard.com

dt-bindings: Add vendor prefix for LG Display

LG Display is an LCD display manufacturer. Originally formed as a joint
venture by LG Electronics and Philips Electronics, it was formerly known
as LG.Philips LCD, hence the DT vendor prefix lgphilips (which is
already in active use in the kernel).

More information is available at
https://en.wikipedia.org/wiki/LG_Display.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190813201101.30980-2-laurent.pinchart@ideasonboard.com

drm/aspeed: gfc_crtc: Make structure aspeed_gfx_funcs constant

The static structure aspeed_gfx_funcs, of type
drm_simple_display_pipe_funcs, is used only as an argument to
drm_simple_display_pipe_init(), which does not modify it. Hence make it
constant to protect it from unintended modification.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20190813063355.25549-1-nishkadg.linux@gmail.com

drm/arm: drop use of drmP.h

Drop use of the deprecated drmP.h header file.

While touching the list of include files divide them
into blocks and sort within each block.
Fix fallout.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Brian Starkey <brian.starkey@arm.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: malidp@foss.arm.com
Link: https://patchwork.freedesktop.org/patch/msgid/20190804094132.29463-5-sam@ravnborg.org

drm/armada: drop use of drmP.h

Drop use of the deprecated drmP.h header file.
While touching the list of include files group them and sort them.
Fix fallout from the header file removal.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20190804094132.29463-4-sam@ravnborg.org

drm/tegra: drop use of drmP.h

Drop use of the deprecated drmP.h header file.

For all touched files divide include files into blocks,
and sort them within the blocks.
Fix fallout.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Jonathan Hunter <jonathanh@nvidia.com>
Cc: linux-tegra@vger.kernel.org
Link: https://patchwork.freedesktop.org/patch/msgid/20190804094132.29463-3-sam@ravnborg.org

drm/i2c/tda998x: drop use of drmP.h

Drop use of the deprecated drmP.h header file.
Fix fallout.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20190804094132.29463-2-sam@ravnborg.org

drm/bridge: dumb-vga-dac: Fix dereferencing -ENODEV DDC channel

If the VGA connector has no DDC channel, an error pointer will be
dereferenced, e.g. on Salvator-XS:

    Unable to handle kernel NULL pointer dereference at virtual address 000000000000017d
    ...
    Call trace:
     sysfs_do_create_link_sd.isra.0+0x40/0x108
     sysfs_create_link+0x20/0x40
     drm_sysfs_connector_add+0xa8/0xc8
     drm_connector_register.part.3+0x54/0xb0
     drm_connector_register_all+0xb0/0xd0
     drm_modeset_register_all+0x54/0x88
     drm_dev_register+0x18c/0x1d8
     rcar_du_probe+0xe4/0x150
     ...

This happens because vga->ddc either contains a valid DDC channel
pointer, or -ENODEV, and drm_connector_init_with_ddc() expects a valid
DDC channel pointer, or NULL.

Fix this by resetting vga->ddc to NULL in case of -ENODEV, and replacing
the existing error checks by non-NULL checks.
This is similar to what the HDMI connector driver does.

Fixes: a4f9087e85de141e ("drm/bridge: dumb-vga-dac: Provide ddc symlink in connector sysfs directory")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190813093046.4976-1-geert+renesas@glider.be

drm/bridge: dw-hdmi-i2s: add .get_eld support

Provide the eld to the generic hdmi-codec driver.
This will let the driver enforce the maximum channel number and set the
channel allocation depending on the hdmi sink.

Cc: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190812125016.20169-1-jbrunet@baylibre.com

drm/bridge: dw-hdmi-i2s: enable only the required i2s lanes

Enable the i2s lanes depending on the number of channel in the stream

Reviewed-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190812120726.1528-8-jbrunet@baylibre.com

drm/bridge: dw-hdmi-i2s: reset audio fifo before applying new params

When changing the audio hw params, reset the audio fifo to make sure
any old remaining data is flushed.

The databook mentions that such reset should be followed by a reset of
the i2s block to make sure the samples stay aligned

Reviewed-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190812120726.1528-7-jbrunet@baylibre.com

drm/bridge: dw-hdmi-i2s: set the channel allocation

setup the channel allocation provided by the generic hdmi-codec driver

Reviewed-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190812120726.1528-6-jbrunet@baylibre.com

drm/bridge: dw-hdmi-i2s: enable lpcm multi channels

Properly setup the channel count and layout in dw-hdmi i2s driver so
we are not limited to 2 channels.

Also correct the maximum channel reported by the DAI from 6 to 8 ch

Reviewed-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190812120726.1528-5-jbrunet@baylibre.com

drm/bridge: dw-hdmi: set channel count in the infoframes

Set the number of channel in the infoframes

Reviewed-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190812120726.1528-4-jbrunet@baylibre.com

drm/bridge: dw-hdmi: move audio channel setup out of ahb

Part of the channel count setup done in dw-hdmi ahb should
actually be done whatever the interface providing the data.

Let's move it to dw-hdmi driver instead.

Reviewed-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190812120726.1528-3-jbrunet@baylibre.com

drm/bridge: dw-hdmi-i2s: support more i2s format

The dw-hdmi-i2s supports more formats than just regular i2s.
Add support for left justified, right justified and dsp modes
A and B.

Reviewed-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190812120726.1528-2-jbrunet@baylibre.com

MAINTAINERS: Update with Amlogic DRM bindings converted as YAML

The amlogic,meson-dw-hdmi.txt and amlogic,meson-vpu.txt has been
converted to YAML schemas, update MAINTAINERS to match them again.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Maxime Jourdan <mjourdan@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190808085522.21950-4-narmstrong@baylibre.com

dt-bindings: display: amlogic, meson-vpu: convert to yaml

Now that we have the DT validation in place, let's convert the device tree
bindings for the Amlogic Display Controller over to YAML schemas.

The original example has a leftover "dmc" memory cell, that has been
removed in the yaml rewrite.

The port connection table has been dropped in favor of a description
of each port.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190808085522.21950-3-narmstrong@baylibre.com

dt-bindings: display: amlogic, meson-dw-hdmi: convert to yaml

Now that we have the DT validation in place, let's convert the device tree
bindings for the Amlogic Synopsys DW-HDMI specifics over to YAML schemas.

The original example and usage of clock-names uses a reversed "isfr"
and "iahb" clock-names, the rewritten YAML bindings uses the reversed
instead of fixing the device trees order.

The #sound-dai-cells optional property has been added to match this node
as a sound dai.

The port connection table has been dropped in favor of a description
of each port.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190808085522.21950-2-narmstrong@baylibre.com

dma-buf: rename reservation_object to dma_resv

Be more consistent with the naming of the other DMA-buf objects.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/323401/

dma-buf: nuke reservation_object seq number

The only remaining use for this is to protect against setting a new exclusive
fence while we grab both exclusive and shared. That can also be archived by
looking if the exclusive fence has changed or not after completing the
operation.

v2: switch setting excl fence to rcu_assign_pointer

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/322380/

dma-buf/sw_sync: Synchronize signal vs syncpt free

During release of the syncpt, we remove it from the list of syncpt and
the tree, but only if it is not already been removed. However, during
signaling, we first remove the syncpt from the list. So, if we
concurrently free and signal the syncpt, the free may decide that it is
not part of the tree and immediately free itself -- meanwhile the
signaler goes on to use the now freed datastructure.

In particular, we get struck by commit 0e2f733addbf ("dma-buf: make
dma_fence structure a bit smaller v2") as the cb_list is immediately
clobbered by the kfree_rcu.

v2: Avoid calling into timeline_fence_release() from under the spinlock

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111381
Fixes: d3862e44daa7 ("dma-buf/sw-sync: Fix locking around sync_timeline lists")
References: 0e2f733addbf ("dma-buf: make dma_fence structure a bit smaller v2")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: Christian König <christian.koenig@amd.com>
Cc: <stable@vger.kernel.org> # v4.14+
Acked-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190812154247.20508-1-chris@chris-wilson.co.uk

drm/panfrost: Bump driver version to 1.1

Increment the driver version to expose the new BO allocation flags.

Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: Boris Brezillon <boris.brezillon@collabora.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Steven Price <steven.price@arm.com>
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190808222200.13176-10-robh@kernel.org

drm/panfrost: Add support for GPU heap allocations

The midgard/bifrost GPUs need to allocate GPU heap memory which is
allocated on GPU page faults and not pinned in memory. The vendor driver
calls this functionality GROW_ON_GPF.

This implementation assumes that BOs allocated with the
PANFROST_BO_NOEXEC flag are never mmapped or exported. Both of those may
actually work, but I'm unsure if there's some interaction there. It
would cause the whole object to be pinned in memory which would defeat
the point of this.

On faults, we map in 2MB at a time in order to utilize huge pages (if
enabled). Currently, once we've mapped pages in, they are only unmapped
if the BO is freed. Once we add shrinker support, we can unmap pages
with the shrinker.

Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: Boris Brezillon <boris.brezillon@collabora.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190808222200.13176-9-robh@kernel.org

drm/panfrost: Convert MMU IRQ handler to threaded handler

In preparation to handle mapping of page faults, we need the MMU handler
to be threaded as code paths take a mutex.

As the IRQ may be shared, we can't use the default handler and must
disable the MMU interrupts locally.

Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: Boris Brezillon <boris.brezillon@collabora.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190808222200.13176-8-robh@kernel.org

drm/panfrost: Consolidate reset handling

Runtime PM resume and job timeouts both call the same sequence of
functions, so consolidate them to a common function. This will make
changing the reset related code easier. The MMU also needs some
re-initialization on reset, so rework its call. In the process, we
hide the address space details within the MMU code in preparation to
support multiple address spaces.

Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190808222200.13176-7-robh@kernel.org

drm/panfrost: Add a no execute flag for BO allocations

Executable buffers have an alignment restriction that they can't cross
16MB boundary as the GPU program counter is 24-bits. This restriction is
currently not handled and we just get lucky. As current userspace
assumes all BOs are executable, that has to remain the default. So add a
new PANFROST_BO_NOEXEC flag to allow userspace to indicate which BOs are
not executable.

There is also a restriction that executable buffers cannot start or end
on a 4GB boundary. This is mostly avoided as there is only 4GB of space
currently and the beginning is already blocked out for NULL ptr
detection. Add support to handle this restriction fully regardless of
the current constraints.

For existing userspace, all created BOs remain executable, but the GPU
VA alignment will be increased to the size of the BO. This shouldn't
matter as there is plenty of GPU VA space.

Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: Boris Brezillon <boris.brezillon@collabora.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190808222200.13176-6-robh@kernel.org

drm/panfrost: Split panfrost_mmu_map SG list mapping to its own function

In preparation to create partial GPU mappings of BOs on page faults,
split out the SG list handling of panfrost_mmu_map().

Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: Boris Brezillon <boris.brezillon@collabora.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Reviewed: Steven Price <steven.price@arm.com>
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190808222200.13176-5-robh@kernel.org

drm/panfrost: Restructure the GEM object creation

Setting the GPU VA when creating the GEM object doesn't allow for any
conditional adjustments to the mapping. In preparation to support
adjusting the mapping and per FD address spaces, restructure the GEM
object creation to map and unmap the GEM object in the GEM object .open()
and .close() hooks.

While panfrost_gem_free_object() and panfrost_gem_prime_import_sg_table()
are not really needed after this commit, keep them as we'll need them in
subsequent commits.

Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: Boris Brezillon <boris.brezillon@collabora.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190808222200.13176-4-robh@kernel.org

drm/shmem: Put pages independent of a SG table being set

If a driver does its own management of pages, the shmem helper object's
pages array could be allocated when a SG table is not. There's not
really any  good reason to tie putting pages with having a SG table when
freeing the object, so just put pages if the pages array is populated.

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: Sean Paul <sean@poorly.run>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Reviewed-by: Steven Price <steven.price@arm.com>
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190808222200.13176-3-robh@kernel.org

drm/gem: Allow sparsely populated page arrays in drm_gem_put_pages

Panfrost has a need for pages allocated on demand via GPU page faults.
When releasing the pages, the only thing preventing using
drm_gem_put_pages() is needing to skip over unpopulated pages, so allow
for skipping over NULL struct page pointers.

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: Sean Paul <sean@poorly.run>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Steven Price <steven.price@arm.com>
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190808222200.13176-2-robh@kernel.org

drm: gm12u320: Add -ENODEV to list of errors to ignore

Add -ENODEV to the list of usb-transfer errors which we ignore to
avoid logging Frame update errors when the device gets unplugged.

Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190811143725.5951-2-hdegoede@redhat.com

drm: gm12u320: Do not take a mutex from a wait_event condition

I made the condition of the wait_event_timeout call in
gm12u320_fb_update_work a helper which takes a mutex to make sure
that any writes to fb_update.run or fb_update.fb from other CPU cores
are seen before the check is done.

This is not necessary as the wait_event helpers contain the necessary
barriers for this themselves.

More over it is harmfull since by the time the check is done the task
is no longer in the TASK_RUNNING state and calling mutex_lock while not
in task-running is not allowed, leading to this warning when the kernel
is build with some extra locking checks enabled:

[11947.450011] do not call blocking ops when !TASK_RUNNING; state=2 set at
               [<00000000e4306de6>] prepare_to_wait_event+0x61/0x190

This commit fixes this by dropping the helper and simply directly
checking the condition (without unnecessary locking) in the
wait_event_timeout call.

Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190811143725.5951-1-hdegoede@redhat.com

drm: gm12u320: Use DRM_DEV_ERROR everywhere

Previously the driver was using a mix of DRM_ERROR and dev_err, be
consisent and use DRM_DEV_ERROR everywhere instead.

Cc: Sam Ravnborg <sam@ravnborg.org>
Suggested-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190730133857.30778-2-hdegoede@redhat.com

drm: gm12u320: Some minor cleanups

3 small cleanups:

1) Drop unused DRIVER_PATCHLEVEL
2) We do not set mode_config.preferred_depth, so instead of passing the
   unset mode_config.preferred_depth to drm_fbdev_generic_setup
   simply pass 0
3) Use __maybe_unused instead of #ifdef CONFIG_PM around the suspend /
   resume functions

Cc: Sam Ravnborg <sam@ravnborg.org>
Suggested-by: Sam Ravnborg <sam@ravnborg.org>
Suggested-by: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190730133857.30778-1-hdegoede@redhat.com

drm/syncobj: Add better overview documentation for syncobj (v2)

This patch only brings the syncobj documentation up-to-date for the
original form of syncobj.  It does not contain any information about the
design of timeline syncobjs.

v2: Incorporate feedback from Lionel and Christian:
 - Mention actual ioctl and flag names
 - Better language around reference counting
 - Misc. language cleanups

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190812142211.15885-1-jason@jlekstrand.net

drm: Fix kerneldoc warns in connector-related docs

Fixes the following warnings:
../drivers/gpu/drm/drm_connector.c:989: WARNING: Unexpected indentation.
../drivers/gpu/drm/drm_connector.c:993: WARNING: Unexpected indentation.
../include/drm/drm_connector.h:544: WARNING: Inline interpreted text or phrase reference start-string without end-string.
../include/drm/drm_connector.h:544: WARNING: Inline interpreted text or phrase reference start-string without end-string.

Changes in v2:
- Use () instead of & for functions (Sam)

Fixes: 1b27fbdde1df ("drm: Add drm_atomic_get_(old|new)_connector_for_encoder() helpers")
Fixes: bb5a45d40d50 ("drm/hdcp: update content protection property with uevent")
Cc: Ramalingam C <ramalingam.c@intel.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Pekka Paalanen <pekka.paalanen@collabora.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: Sean Paul <sean@poorly.run>
Cc: David Airlie <airlied@linux.ie>
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190812140112.6702-1-sean@poorly.run

drm/komeda: Fix potential integer overflow in komeda_crtc_update_clock_ratio

Add suffix ULL to constant 1000 in order to avoid a potential integer
overflow and give the compiler complete information about the proper
arithmetic to use. Notice that this constant is being used in a context
that expects an expression of type u64, but it's currently evaluated
using 32-bit arithmetic.

Addresses-Coverity-ID: 1485796 ("Unintentional integer overflow")
Fixes: ed22c6d9304d ("drm/komeda: Use drm_display_mode "crtc_" prefixed hardware timings")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
Signed-off-by: james qian wang (Arm Technology China) <james.qian.wang@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190812000801.GA29204@embeddedor

dma-fence: Report the composite sync_file status

Same as for the individual fences, we want to report the actual status
of the fence when queried.

Reported-by: Petri Latvala <petri.latvala@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: Petri Latvala <petri.latvala@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190812091203.29871-1-chris@chris-wilson.co.uk

drm: sun4i: Add support for enabling DDC I2C bus to sun8i_dw_hdmi glue

Orange Pi 3 board requires enabling a voltage shifting circuit via GPIO
for the DDC bus to be usable.

Add support for hdmi-connector node's optional ddc-en-gpios property to
support this use case.

Signed-off-by: Ondrej Jirman <megous@megous.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190806155744.10263-4-megous@megous.com

dt-bindings: display: hdmi-connector: Support DDC bus enable

Some Allwinner SoC using boards (Orange Pi 3 for example) need to enable
on-board voltage shifting logic for the DDC bus using a gpio to be able
to access DDC bus. Use ddc-en-gpios property on the hdmi-connector to
model this.

Add binding documentation for optional ddc-en-gpios property.

Signed-off-by: Ondrej Jirman <megous@megous.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190806155744.10263-3-megous@megous.com

dma-fence: Propagate errors to dma-fence-array container

When one of the array of fences is signaled, propagate its errors to the
parent fence-array (keeping the first error to be raised).

v2: Opencode cmpxchg_local to avoid compiler freakout.
v3: Be careful not to flag an error if we race against signal-on-any.
v4: Same applies to installing the signal cb.
v5: Use cmpxchg to only set the error once before using a nifty idea by
Christian to avoid changing the status after emitting the signal.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: Christian König <christian.koenig@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190811210902.22112-1-chris@chris-wilson.co.uk

drm/panel: drop return code from drm_panel_detach()

There are no errors that can be reported by this function,
so drop the return code.
Fix the only bridge driver that checked the return result.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: Sean Paul <sean@poorly.run>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: Andrzej Hajda <a.hajda@samsung.com>
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190804201637.1240-14-sam@ravnborg.org

drm/panel: use inline comments in drm_panel.h

Inline comments provide better space for additional comments.
Comments was slightly edited to follow the normal style,
but no change to actual content.
Used the opportuniy to change the order in drm_panel_funcs
to follow the order they will be used by a panel.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: Sean Paul <sean@poorly.run>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20190804201637.1240-13-sam@ravnborg.org

drm/panel: move drm_panel functions to .c file

Move inline functions from include/drm/drm_panel.h to drm_panel.c.
This is in preparation for follow-up patches that will add extra
logic to the functions.
As they are no longer static inline, EXPORT them.

v2:
- align order of functions in drm_panel.h and drm_panel.c (Laurent)

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: Sean Paul <sean@poorly.run>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20190804201637.1240-12-sam@ravnborg.org

drm/panel: ili9322: move bus_flags to get_modes()

To prepare the driver to receive drm_connector only in the get_modes()
callback, move bus_flags handling to ili9322_get_modes().

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190804201637.1240-11-sam@ravnborg.org

drm/mxsfb: fix opencoded use of drm_panel_*

Use the drm_panel_get_modes() function.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Marek Vasut <marex@denx.de>
Acked-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: linux-arm-kernel@lists.infradead.org
Link: https://patchwork.freedesktop.org/patch/msgid/20190804201637.1240-8-sam@ravnborg.org

drm/fsl-dcu: fix opencoded use of drm_panel_*

Use drm_panel_get_modes() to access modes.
This has a nice side effect to simplify the code.

drm_panel_get_modes() may return a negative value if
for example panel is NULL. This is a small change
compared to before, but really what we want.

v2:
- Add more info to changelog (Stefan)

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Cc: Alison Wang <alison.wang@nxp.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190804201637.1240-6-sam@ravnborg.org

drm/imx: fix opencoded use of drm_panel_*

Use the drm_panel_get_modes() function to get the modes.

This patch leave one test for the function pointer:
    panel->funcs->get_modes

This is used to check if the panel may have any modes.
There is no direct replacement.
We may be able to just check that drm_panel_get_modes() return > 0,
but as this is not the same functionality it is left for later.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: linux-arm-kernel@lists.infradead.org
Link: https://patchwork.freedesktop.org/patch/msgid/20190804201637.1240-5-sam@ravnborg.org

drm/bridge: tc358767: fix opencoded use of drm_panel_*

Replace open coded version with call to drm_panel_get_modes().

Include change to deal with the possible negative
return values from drm_panel_get_modes()

v2:
- Added more info to changelog (Philipp)

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Cc: Andrzej Hajda <a.hajda@samsung.com>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
Cc: Jonas Karlman <jonas@kwiboo.se>
Cc: Jernej Skrabec <jernej.skrabec@siol.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20190804201637.1240-2-sam@ravnborg.org

dma-buf: further relax reservation_object_add_shared_fence

Other cores don't busy wait any more and we removed the last user of checking
the seqno for changes. Drop updating the number for shared fences altogether.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/322379/?series=64837&rev=1

drm/i915: use new reservation_object_fences helper

Instead of open coding the sequence loop use the new helper.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/322377/?series=64837&rev=1

dma-buf: add reservation_object_fences helper

Add a new helper to get a consistent set of pointers from the reservation
object. While at it group all access helpers together in the header file.

v2: correctly return shared_count as well

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/322378/?series=64837&rev=1

dma-buf: make dma_fence structure a bit smaller v2

We clear the callback list on kref_put so that by the time we
release the fence it is unused. No one should be adding to the cb_list
that they don't themselves hold a reference for.

This small change is actually making the structure 16% smaller.

v2: add the comment to the code as well.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/322916/

drm: meson: venc: set the correct macrovision max amplitude value

According to the register description of ENCI_MACV_MAX_AMP, the
macrovision max amplitude value should be:
- hdmi 480i => 0xb
- hdmi 576i => 0x7

The max value is 0x7ff (10 bits).

Signed-off-by: Julien Masson <jmasson@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/86mui782dt.fsf@baylibre.com

drm: meson: add macro used to enable HDMI PLL

This patch add new macro HHI_HDMI_PLL_CNTL_EN which is used to enable
HDMI PLL.

Signed-off-by: Julien Masson <jmasson@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/86o92n82e1.fsf@baylibre.com

drm: meson: global clean-up

This patch aims to:
- Add general and TODO comments
- Respect coding style for multi-line comments
- Align macro definitions
- Remove useless macro

Signed-off-by: Julien Masson <jmasson@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/86pnn382e8.fsf@baylibre.com

drm: meson: venc: use proper macros instead of magic constants

This patch add new macros which are used to set the following
registers:
- ENCI_CFILT_CTRL
- ENCI_CFILT_CTRL2
- ENCI_MACV_MAX_AMP
- ENCI_VIDEO_MODE_ADV
- ENCI_VFIFO2VD_CTL
- ENCI_VIDEO_EN
- ENCP_VIDEO_MODE
- VPU_HDMI_SETTING
- VENC_UPSAMPLE_CTRL0
- VENC_UPSAMPLE_CTRL1
- VENC_UPSAMPLE_CTRL2
- VENC_VDAC_FIFO_CTRL
- VENC_VDAC_DAC0_FILT_CTRL0
- VENC_INTCTRL

Signed-off-by: Julien Masson <jmasson@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/86r27j82ef.fsf@baylibre.com

drm: meson: viu: use proper macros instead of magic constants

This patch add new macros which are used to set the following
registers:
- VIU_SW_RESET
- VIU_OSD1_CTRL_STAT
- VIU_OSD2_CTRL_STAT
- VIU_OSD1_FIFO_CTRL_STAT
- VIU_OSD2_FIFO_CTRL_STAT
- VIU_MISC_CTRL0
- VIU_OSD_BLEND_CTRL
- OSD1_BLEND_SRC_CTRL
- OSD2_BLEND_SRC_CTRL
- DOLBY_PATH_CTRL

Signed-off-by: Julien Masson <jmasson@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
[narmstrong: fix OSD1_BLEND_SRC_CTRL register init value for G12A]
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/86sgrz82em.fsf@baylibre.com

drm: meson: vpp: use proper macros instead of magic constants

This patch add new macros which are used to set the following
registers:
- VPP_OSD_SCALE_COEF_IDX
- VPP_DOLBY_CTRL
- VPP_OFIFO_SIZE
- VPP_HOLD_LINES
- VPP_SC_MISC
- VPP_VADJ_CTRL

Signed-off-by: Julien Masson <jmasson@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
[narmstrong: put back 0x1020080 in VPP_DUMMY_DATA1 for GXM]
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/86tvcf82eu.fsf@baylibre.com

drm: meson: drv: use macro when initializing vpu

This patch add new macro which is used to set WRARB/RDARB mode of
the VPU.

Signed-off-by: Julien Masson <jmasson@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/86v9wv82f1.fsf@baylibre.com

drm: meson: crtc: use proper macros instead of magic constants

This patch add new macros which describe couple bits field of the
following registers:
- VD1_BLEND_SRC_CTRL
- VPP_SC_MISC

Signed-off-by: Julien Masson <jmasson@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/86wohb82fa.fsf@baylibre.com

drm: meson: mask value when writing bits relaxed

The value used in the macro writel_bits_relaxed has to be masked since
we don't want change the bits outside the mask.

Signed-off-by: Julien Masson <jmasson@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/86y31r82fo.fsf@baylibre.com

drm/panel: simple: Support TI nspire panels

This adds support for the TI nspire panels to the simple panel
roster. This code is based on arch/arm/mach-nspire/clcd.c.
This includes likely the first grayscale panel supported.

These panels will be used with the PL11x DRM driver.

Cc: Daniel Tang <dt.tangr@gmail.com>
Cc: Fabian Vogt <fabian@ritter-vogt.de>
Tested-by: Fabian Vogt <fabian@ritter-vogt.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190805085847.25554-4-linus.walleij@linaro.org

drm/panel: simple: Add TI nspire panel bindings

Add bindings for the TI NSPIRE simple display panels.

Cc: devicetree@vger.kernel.org
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190806135437.7451-1-linus.walleij@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drm/pl111: Support grayscale

Migrating the TI nspire calculators to use the PL111 driver for
framebuffer requires grayscale support for the elder panel
which uses 8bit grayscale only.

DRM does not support 8bit grayscale framebuffers in memory,
but by defining the bus format to be MEDIA_BUS_FMT_Y8_1X8 we
can get the hardware to turn on a grayscaling feature and
convert the RGB framebuffer to grayscale for us.

Cc: Daniel Tang <dt.tangr@gmail.com>
Cc: Fabian Vogt <fabian@ritter-vogt.de>
Tested-by: Fabian Vogt <fabian@ritter-vogt.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190805085847.25554-2-linus.walleij@linaro.org

drm/panfrost: Add madvise and shrinker support

Add support for madvise and a shrinker similar to other drivers. This
allows userspace to mark BOs which can be freed when there is memory
pressure.

Unlike other implementations, we don't depend on struct_mutex. The
driver maintains a list of BOs which can be freed when the shrinker
is called. Access to the list is serialized with the shrinker_lock.

Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190805143358.21245-2-robh@kernel.org

drm/shmem: Add madvise state and purge helpers

Add support to the shmem GEM helpers for tracking madvise state and
purging pages. This is based on the msm implementation.

The BO provides a list_head, but the list management is handled outside
of the shmem helpers as there are different locking requirements.

Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: Sean Paul <sean@poorly.run>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Eric Anholt <eric@anholt.net>
Acked-by: Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190805143358.21245-1-robh@kernel.org

drm/panfrost: Remove completed features still in TODO

There's a few features the driver supports which we forgot to remove, so
remove them now.

Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190802195727.1963-1-robh@kernel.org

drm/rockchip: fix VOP_WIN_GET macro

Commit 9a61c54b9bff ("drm/rockchip: vop: group vop registers") seems to
have unintentionally changed the defintion of this macro.  Since it is
unused, this was not spotted but any attempt to use it results in
compilation errors.

Revert to the previous definition.

Fixes: 9a61c54b9bff ("drm/rockchip: vop: group vop registers")
Signed-off-by: John Keeping <john@metanate.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20190703095111.29117-1-john@metanate.com

Revert "drm/gem: Rename drm_gem_dumb_map_offset() to drm_gem_map_offset()"

This reverts commit 220df83a5394fbf7c1486ba7848794b7b351d598.

Turns out drm_gem_dumb_map_offset really only worked for the dumb buffer
case, so revert the name change.

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sean Paul <sean@poorly.run>
Link: https://patchwork.freedesktop.org/patch/msgid/20190807145253.2037-2-sean@poorly.run

Revert "drm/panfrost: Use drm_gem_map_offset()"

This reverts commit 583bbf46133c726bae277e8f4e32bfba2a528c7f.

Turns out we need mmap to work on imported BOs even if the current code
is buggy.

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sean Paul <sean@poorly.run>
Link: https://patchwork.freedesktop.org/patch/msgid/20190807145253.2037-3-sean@poorly.run

drm/vgem: drop DRM_AUTH usage from the driver

The authentication can be circumvented, by design, by using the render
node.

From the driver POV there is no distinction between primary and render
nodes, thus we can drop the token.

Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190527081741.14235-11-emil.l.velikov@gmail.com

drm/msm: drop DRM_AUTH usage from the driver

The authentication can be circumvented, by design, by using the render
node.

From the driver POV there is no distinction between primary and render
nodes, thus we can drop the token.

Cc: Rob Clark <robdclark@gmail.com>
Cc: Sean Paul <sean@poorly.run>
Cc: freedreno@lists.freedesktop.org
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190527081741.14235-7-emil.l.velikov@gmail.com

drm/nouveau: remove open-coded drm_invalid_op()

Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: nouveau@lists.freedesktop.org
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190522150219.13913-2-emil.l.velikov@gmail.com

Revert "drm/nouveau: remove open-coded drm_invalid_op()"

This reverts commit ccdae42575695ab442941310bd67c7ed1714e273.

Mandatory review was missing from this patch.

Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Acked-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190807142101.251400-6-sean@poorly.run

Revert "drm/msm: drop DRM_AUTH usage from the driver"

This reverts commit 88209d2c5035737f96bcfc2fd73c0fd8d80e9bf1.

Mandatory review was missing from this patch.

Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Acked-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190807142101.251400-5-sean@poorly.run

Revert "drm/vgem: drop DRM_AUTH usage from the driver"

This reverts commit e4eee93d25776da998ec2dfaabe7d2206598d26d.

Mandatory review was missing from this patch.

Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Acked-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190807142101.251400-4-sean@poorly.run

Revert "Revert "drm/panfrost: Use drm_gem_map_offset()""

This reverts commit be855382bacb5ccfd24f9be6098d87acf4cfbb15.

Mandatory review was missing from this patch.

Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190807142101.251400-3-sean@poorly.run

Revert "Revert "drm/gem: Rename drm_gem_dumb_map_offset() to drm_gem_map_offset()""

This reverts commit 415d2e9e07574d3de63b8df77dc686e0ebf64865.

Mandatory review was missing from this patch.

Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190807142101.251400-2-sean@poorly.run

drm/sti: fix opencoded use of drm_panel_*

Use the drm_panel_(enable|disable|get_modes) functions.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Vincent Abriou <vincent.abriou@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190804201637.1240-9-sam@ravnborg.org

dma-buf: simplify reservation_object_get_fences_rcu a bit

We can add the exclusive fence to the list after making sure we got
a consistent state.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/322034/?series=64786&rev=1

drm/i915: stop using seqcount for fence pruning

After waiting for a reservation object use reservation_object_test_signaled_rcu
to opportunistically prune the fences on the object.

This allows removal of the seqcount handling in the reservation object.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/322032/?series=64786&rev=1

dma-buf: fix shared fence list handling in reservation_object_copy_fences

Add some helpers to correctly allocate/free reservation_object_lists.

Otherwise we might forget to drop dma_fence references on list destruction.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/322031/?series=64786&rev=1

dma-buf: fix busy wait for new shared fences

When reservation_object_add_shared_fence is replacing an old fence with a new
one we should not drop the old one before the new one is in place.

Otherwise other cores can busy wait for the new one to appear.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/322030/