Noteworthy changes this time:
1) 4k support for newer chips (ganging up hwpipes and mixers)
2) using OPP bindings for gpu
3) more prep work towards per-process pagetables
* 'msm-next' of git://people.freedesktop.org/~robclark/linux: (47 commits)
msm/drm: gpu: Dynamically locate the clocks from the device tree
drm/msm: gpu: Use OPP tables if we can
drm/msm: Hard code the GPU "slow frequency"
drm/msm: Add MSM_PARAM_GMEM_BASE
drm/msm: Reference count address spaces
drm/msm: Make sure to detach the MMU during GPU cleanup
drm/msm/mdp5: Enable 3D mux in mdp5_ctl
drm/msm/mdp5: Reset CTL blend registers before configuring them
drm/msm/mdp5: Assign 'right' mixer to CRTC state
drm/msm/mdp5: Stage border out on base stage if CRTC has 2 LMs
drm/msm/mdp5: Stage right side hwpipes on Right-side Layer Mixer
drm/msm/mdp5: Prepare Layer Mixers for source split
drm/msm/mdp5: Configure 'right' hwpipe
drm/msm/mdp5: Assign a 'right hwpipe' to plane state
drm/msm/mdp5: Create mdp5_hwpipe_mode_set
drm/msm/mdp5: Add optional 'right' Layer Mixer in CRTC state
drm/msm/mdp5: Add a CAP for Source Split
drm/msm/mdp5: Remove mixer/intf pointers from mdp5_ctl
drm/msm/mdp5: Start using parameters from CRTC state
drm/msm/mdp5: Add more stuff to CRTC state
...
Last drm-misc-next pull req for 4.12
Core changes:
- fb_helper checkpatch cleanup and simplified _add_one_connector() (Thierry)
- drm_ioctl and drm_sysfs improved/gained documentation (Daniel)
- [ABI] Repurpose reserved field in drm_event_vblank for crtc_id (Ander)
- Plumb acquire ctx through legacy paths to avoid lock_all and legacy_backoff
(Daniel)
- Add connector_atomic_check to check conn constraints on modeset (Maarten)
- Add drm_of_find_panel_or_bridge to remove boilerplate in drivers (Rob)
Driver changes:
- meson moved to drm-misc (Neil)
- Added support for Amlogic GX SoCs in dw-hdmi (Neil)
- Rockchip unbind actually cleans up the things bind initializes (Jeffy)
- A couple misc fixes in virtio, dw-hdmi
NOTE: this also includes a backmerge of drm-next as well rc5 (we needed vmwgfx
as well as the new synopsys media formats)
* tag 'drm-misc-next-2017-04-07' of git://anongit.freedesktop.org/git/drm-misc: (77 commits)
Revert "drm: Don't allow interruptions when opening debugfs/crc"
drm: Only take cursor locks when the cursor plane exists
drm/vmwgfx: Fix fbdev emulation using legacy functions
drm/rockchip: Shutdown all crtcs when unbinding drm
drm/rockchip: Reorder drm bind/unbind sequence
drm/rockchip: analogix_dp: Disable clock when unbinding
drm/rockchip: vop: Unprepare clocks when unbinding
drm/rockchip: vop: Enable pm domain before vop_initial
drm/rockchip: cdn-dp: Don't unregister audio dev when unbinding
drm/rockchip: cdn-dp: Don't try to release firmware when not loaded
drm: bridge: analogix: Destroy connector & encoder when unbinding
drm: bridge: analogix: Disable clock when unbinding
drm: bridge: analogix: Unregister dp aux when unbinding
drm: bridge: analogix: Detach panel when unbinding analogix dp
drm: Don't allow interruptions when opening debugfs/crc
drm/virtio: don't leak bo on drm_gem_object_init failure
drm: bridge: dw-hdmi: fix input format/encoding from plat_data
drm: omap: use common OF graph helpers
drm: convert drivers to use drm_of_find_panel_or_bridge
drm: convert drivers to use of_graph_get_remote_node
...
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Backmerge tag 'v4.11-rc6' into drm-next
Linux 4.11-rc6
drm-misc needs 4.11-rc5, may as well fix conflicts with rc6.
There are reasons for a memory object to outlive the file descriptor
that created it and so the address space that a buffer object is
attached to must also outlive the file descriptor. Reference count
the address space so that it can remain viable until all the objects
have released their addresses.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
3D mux is a small block placed after the DSPPs in MDP5. It can merge
2 LM/DSPP outputs and feed it to a single interface.
Enable 3D Mux if our mdp5_pipeline has 2 active LMs. This check
will need to be made more specific later when we add Dual DSI
support with source split enabled. In that use case, each LM feeds to a
separae INTF, so the 3D mux isn't needed.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Assigning LMs dynamically to CRTCs results in REG_MDP5_CTL_LAYER_REGs
and REG_MDP5_CTL_LAYER_EXT_REGs maintaining old values for a LM that
isn't used by our CTL instance anymore.
Clear the ctl's CTL_LAYER_REG and CTL_LAYER_EXT_REGs for all LM
instances. The ones that need to be configured are configured later
in this func.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Dynamically assign a right mixer to mdp5_crtc_state in the CRTC's
atomic_check path. Assigning the right mixer has some constraints,
i.e, only a few LMs can be paired together. Update mdp5_mixer_assign
to handle these constraints.
Firstly, we need to identify whether we need a right mixer or not.
At the moment, there are 2 scenarios where a right mixer might be
needed:
- If any of the planes connected to this CRTC is too wide (i.e, is
comprised of 2 hwpipes).
- If the CRTC's mode itself is too wide (i.e, a 4K mode on HDMI).
We implement both these checks in the mdp5_crtc_atomic_check(), and
pass 'need_right_mixer' to mdp5_setup_pipeline.
If a CRTC is already assigned a single mixer, and a new atomic commit
brings in a drm_plane that needs 2 hwpipes, we can successfully commit
this mode without requiring a full modeset, provided that we still use
the previously assigned mixer as the left mixer. If such an assignment
isn't possible, we'd need to do a full modeset. This scenario has been
ignored for now.
The mixer assignment code is a bit messy, considering we have at most
4 LM instances in hardware. This can probably be re-visited later with
simplified logic.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
If a CRTC comprises of 2 LMs, it is mandatory to enable border out
and assign it to the base stage.
We had to enable border out also when the base plane wasn't fullscreen.
Club these checks and put them in a separate function called
get_start_stage() that returns the starting stage for assigning planes.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Now that our mdp5_planes can consist of 2 hwpipes, update the
blend_setup() code to stage the right hwpipe to the left and
right LMs
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
In order to enable Source Split in HW, we need to add/modify
a few LM register configurations:
- Configure the LM width to be half the mode width, so that
each LM manages one half of the scanout.
- Tell the 'right' LM that it is configured to be the 'right'
LM in source split mode.
- Since we now have 2 places where REG_MDP5_LM_BLEND_COLOR_OUT is
configured, do a read-update-store for the register instead of
directly writing a value to it.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Now that we have a right hwpipe in mdp5_plane_state, configure it
mdp5_plane_mode_set(). The only parameters that vary between the
left and right hwpipes are the src_w, src_img_w, src_x and crtc_x
as we just even chop the fb into left and right halves.
Add a mdp5_plane_right_pipe() which will be used by the crtc code
to set up LM stages.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
If the drm_plane has a source width that's greater than the max width
supported by a SSPP (2560 pixels on 8x96), then we assign a 'r_hwpipe'
to it in mdp5_plane_atomic_check().
TODO: There are a few scenarios where the hwpipe assignments aren't
recommended by HW. For example, an assignment which results in a
drm_plane to of two different types of hwpipes (say RGB0 on left
and DMA1 on right) is not recommended.
Also, hwpipes have a priority mapping, where the higher priority pipe
needs to be staged on left LM, and the lower priority needs to be
staged on the right LM. For example, the priority order for VIG pipes
in decreasing order of priority is VIG0, VIG1, VIG2, and VIG3. So, VIG0
on left and VIG1 on right is a correct configuration, but VIG1 on left
and VIG0 on right isn't. These scenarios are ignored for now for the
sake of simplicity.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Refactor mdp5_plane_mode_set to call mdp5_hwpipe_mode_set. The latter
func takes in only the hwpipe and the parameters that need to be
programmed into the hwpipe registers. All the code that calculates these
parameters is left as is in mdp5_plane_mode_set.
In the future, when we let drm_plane be comprised of 2 hwpipes, this func
allow us to configure each pipe without adding redundant code.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Add another mdp5_hw_mixer pointer (r_mixer) in mdp5_crtc_state.
This mixer will be used to generate the right half of the scanout.
With Source Split, a SSPP can now be connected to 2 Layer Mixers, but
has to be at the same blend level (stage #) on both Layer Mixers.
A drm_plane that has a lesser width than the max width supported, will
comprise of a single SSPP/hwpipe, staged on both the Layer Mixers at
the same blend level. A plane that is greater than max width will comprise
of 2 SSPPs, with the 'left' SSPP staged on the left LM, and the 'right'
SSPP staged on the right LM at the same blend level.
For now, the drm_plane consists of only one SSPP, therefore, it
needs to be staged on both the LMs in blend_setup() and mdp5_ctl_blend().
We'll extend this logic to support 2 hwpipes per plane later.
The crtc cursor ops (using the LM cursors, not SSPP cursors) simply
return an error if they're called when the right mixer is assigned to
the CRTC state. With source split is enabled, we're expected to only
SSPP cursors.
This commit adds code that configures the right mixer, but the r_mixer
itself isn't assigned at the moment.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Some of the newer MDP5 versions support Source Split of SSPPs. It is a
feature that allows us to route the output of a hwpipe to 2 Layer
Mixers. This is required to achieve the following use cases:
- Dual DSI: For high res DSI panels (such as 2560x1600 etc), a single
DSI interface doesn't have the bandwidth to drive the required pixel
clock. We use 2 DSI interfaces to drive the left and right halves
of the panel (i.e, 1280x1600 each). The MDP5 pipeline here would look
like:
LM0 -- DSPP0 -- INTF1 -- DSI1
/
hwpipe--
\
LM1 -- DSPP1 -- INTF2 -- DSI2
A single hwpipe is used to scan out the left and right halves to DSI1
and DSI2 respectively. In order to do this, we need to configure the
2 Layer Mixers in Source Split mode.
- HDMI 4K: In order to support resolutions with width higher than the
max width supported by a hwpipe, we club 2 hwpipes together:
hwpipe1 --- LM0 -- DSPP0
- - \
- -- 3D Mux -- INTF0 -- HDMI
- - /
hwpipe2 --- LM1 -- DSPP1
hwpipe1 is staged on the 'left' Layer Mixer, and hwpipe2 is staged on
the 'right' Layer Mixer. An additional block called the '3D Mux' is
used to merge the output of the 2 DSPPs to a single interface.
In this use case, it is possible that a 4K surface is downscaled and
placed completely within one of the halves. In order to support such
scenarios (and keep the programming simple), Layer Mixers with Source
Split can be assigned 2 hw pipes per stage. While scanning out, the HW
takes care of fetching the pixels fom the correct pipe.
Add a MDP cap to tell whether the HW supports source split or not.
Add a MDP LM cap that tells whether a LM instance can operate in
source split mode (and generate the 'left' part of the display
output).
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
These are a part of CRTC state, it doesn't feel nice to leave them
hanging in mdp5_ctl struct. Pass mdp5_pipeline pointer instead
wherever it is needed.
We still have some params in mdp5_ctl like start_mask etc which
are derivative of atomic state, and should be rolled back if
a commit fails, but it doesn't seem to cause much trouble.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
In the last few commits, we've been adding params to mdp5_crtc_state, and
assigning them in the atomic_check() funcs. Now it's time to actually
start using them.
Remove the duplicated params from the mdp5_crtc struct, and start using
them in the mdp5_crtc code. The majority of the references to these params
is in code that executes after the atomic swap has occurred, so it's okay
to use crtc->state in them. There are a couple of legacy LM cursor ops that
may not use the updated state, but (I think) it's okay to live with that.
Now that we dynamically allocate a mixer to the CRTC, we can also remove
the static assignment to it in mdp5_crtc_init, and also drop the code that
skipped init-ing WB bound mixers (those will now be rejected by
mdp5_mixer_assign()).
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Things like vblank/err irq masks, mode of operation (command mode or not)
are derivative of the interface and mixer state. Therefore, they need to
be a part of the CRTC state too.
Add them to mdp5_crtc_state, and assign them in the CRTC's atomic_check()
func, so that it can be rolled back to a clean state.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
The INTF and CTL used in a display pipeline are going to be maintained as
a part of the CRTC state (i.e, in mdp5_crtc_state).
These entities, however, are currently statically assigned to drm_encoders
(i.e. mdp5_encoder). Since these aren't directly visible to the CRTC, we
assign them to the CRTC state in the encoder's atomic_check() op.
With this approach, we assign portions of CRTC state in two different
places: the layer mixer in CRTC's atomic_check(), and the INTF and CTL
pieces in the encoder's atomic_check() op.
We'd have more options here if the drm core maintained encoder state too,
but the current approach of clubbing everything in CRTC's state works just
fine.
Unlike hwpipes and mixers, we don't need to keep a track of INTF/CTL
assignments in the global atomic state. This is because they're currently
not sharable resources. For example, INTF0 and CTL0 will always be assigned
to one drm_encoder. This can change later when we implement writeback and
want a CRTC to use a CTL for a while, and then release it for others to use
it. Or, when a drm_encoder can switch between using a single INTF vs
2 INTFs.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Add the stuff needed to allow dynamically assigning a mixer to a CRTC.
Since mixers are a resource that can be shared across multiple CRTCs, we
need to maintain a 'hwmixer_to_crtc' map in the global atomic state,
acquire the mdp5_kms.state_lock modeset lock and so on.
The mixer is assigned in the CRTC's atomic_check() func, a failure will
result in the new state being cleanly rolled back.
The mixer assignment itself is straightforward, and almost identical to
what we do for hwpipes. We don't need to grab the old hwmixer_to_crtc
state like we do in hwpipes since we don't need to compare anything
with the old state at the moment.
The only LM capability we care about at the moment is whether the mixer
instance can be used to display stuff (i.e, connect to an INTF
downstream).
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Subclass drm_crtc_state so that we can maintain additional state for
our CRTCs.
Add mdp5_pipeline and mdp5_ctl pointers in the subclassed state.
mdp5_pipeline is a grouping of the HW entities that forms the downstream
pipeline for a particular CRTC. It currently contains pointers to
mdp5_interface and mdp5_hw_mixer tied to this CRTC. Later, we will
have 2 hwmixers in this struct. (We could also have 2 intfs if we want
to support dual DSI with Source Split enabled. Implementing that feature
isn't planned at the moment).
The mdp5_pipeline state isn't used at the moment. For now, we just
introduce mdp5_crtc_state and the crtc funcs needed to manage the
subclassed state.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
The mdp5_ctl has an 'op_mode' struct which contains info on
the downstream pipeline.
Grouping these params together in a struct doesn't serve much
purpose in the code. Maybe there was a plan to expand this
further that never happened.
Remove the op_mode struct, and place its members directly in
mdp5_ctl. This will help avoid confusion later when I introduce
my own verion of a mdp5 pipeline :)
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
mdp5_interface struct contains data corresponding to a INTF
instance in MDP5 hardware. This sturct is memcpy'd to the
mdp5_encoder struct, and then later to the mdp5_ctl struct.
Instead of copying around interface data, create mdp5_interface
instances in mdp5_init, like how it's done currently done for
pipes and layer mixers. Pass around the interface pointers to
mdp5_encoder and mdp5_ctl. This simplifies the code, and allows
us to decouple encoders from INTFs in the future if needed.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
PingPong ID for a Layer Mixer is already contained in
mdp5_hw_mixer.
This avoids the need to retrieve PP ID using macros
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Use the mdp5_hw_mixer struct in the mdp5_crtc and mdp5_ctl instead of
using the LM index.
Like before, the Layer Mixers are assigned statically to the CRTCs.
The hwmixer(s) will later be dynamically assigned to CRTCs.
For now, ignore the hwmixers that can only do WB.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Create a struct to represent MDP5 Layer Mixer instances. This will
eventually allow us to detach CRTCs from the Layer Mixers, and
generally clean things up a bit.
This is very similar to how hwpipes were previously abstracted away
from drm planes.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
The number of Layer Mixers and the downstream blocks (DSPPs and PPs)
connected to each LM can vary with different MDP5 revisions. These
parameters are also static.
Keep the per instance LM data in mdp5_cfg. This will avoid the need
to have macros which identify PP id or DSPP id the LM is connected
to. We don't configure DSPPs at the moment, but keeping the DSPP
instance # here might come handy later.
Also add a 'caps' field that identifies features supported by a
LM instance. Introduce the caps MDP_LM_CAP_DISPLAY and MDP_LM_CAP_WB
that identify whether a LM instance can be used for display or
writeback.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
We'd previously moved the pipe_lock spinlock to the hwpipe struct. Bring
it back to mdp5_plane. We will need this because an mdp5_plane in the
future could comprise of 2 hw pipes. It makes more sense to have a single
lock to protect the registers for the hw pipes used by a plane, rather
than trying to take individual locks per hwpipe when committing a
configuration.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
'SSPP_MAX + 1' is the max number of hwpipes that can be present on a
MDP5 platform. Recently, 2 new cursor hwpipes were added, which
caused overflows in arrays that used SSPP_MAX to represent the number
of elements. Update the SSPP_MAX value to incorporate the extra
hwpipes.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
The core takes care of handling the send_event vs. close() issues, we
can remove that driver code.
Cc: Rob Clark <robdclark@gmail.com>
Cc: linux-arm-msm@vger.kernel.org
Cc: freedreno@lists.freedesktop.org
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Convert drivers to use the new of_graph_get_remote_node() helper
instead of parsing the endpoint node and then getting the remote device
node. Now drivers can just specify the device node and which
port/endpoint and get back the connected remote device node. The details
of the graph binding are nicely abstracted into the core OF graph code.
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>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Tested-by: Liviu Dudau <liviu.dudau@arm.com>
Tested-by: Eric Anholt <eric@anholt.net>
Tested-by: Jyri Sarha <jsarha@ti.com>
Tested by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
'SSPP_MAX + 1' is the max number of hwpipes that can be present on a
MDP5 platform. Recently, 2 new cursor hwpipes were added, which
caused overflows in arrays that used SSPP_MAX to represent the number
of elements. Update the SSPP_MAX value to incorporate the extra
hwpipes.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Just rolling it out, no code change here.
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Eric Anholt <eric@anholt.net>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170322215058.8671-3-daniel.vetter@ffwll.ch
Merge Laurent's drm_platform removal code. Only conflict is with the
drm_pci.h extraction, which allows me to fix up the misplayed
drm_platform_init fumble that 0day and Stephen Rothwell reported.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
drm_debugfs_cleanup() now removes all minor->debugfs_list entries
automatically, so it's not necessary to call
drm_debugfs_remove_files(). Additionally it uses
debugfs_remove_recursive() to clean up the debugfs files, so no need
to do that.
Cc: robdclark@gmail.com
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170126225621.12314-10-noralf@tronnes.org
The field contains a pointer to the parent platform device of the DRM
device. As struct drm_device also contains a dev pointer to the struct
device embedded in the platform_device structure, the platformdev field
is redundant. Remove it and use the dev pointer directly.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Jyri Sarha <jsarha@ti.com>
Acked-by: Vincent Abriou <vincent.abriou@st.com> # For sti
Acked-by: Russell King <rmk+kernel@armlinux.org.uk> # For armada
Acked-by: Rob Clark <robdclark@gmail.com> # For msm
Acked-by: Xinwei Kong<kong.kongxinwei@hisilicon.com>
This code has been more or less picked up from the vc4 and intel
implementations of update_plane() funcs for cursor planes.
The update_plane() func is usually the drm_atomic_helper_update_plane
func that will issue an atomic commit with the plane updates. Such
commits are not intended to be done faster than the vsync rate.
The legacy cursor userspace API, on the other hand, expects the kernel
to handle cursor updates immediately.
Create a fast path in update_plane, which updates the cursor registers
and flushes the configuration. The fast path is taken when there is only
a change in the cursor's position in the crtc, or a change in the
cursor's crop co-ordinates. For anything else, we go via the slow path.
We take the slow path even when the fb changes, and when there is
currently no fb tied to the plane. This should hopefully ensure that we
always take a slow path for every new fb. This in turn should ensure that
the fb is pinned/prepared.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
In mdp5_plane_atomic_check, we get crtc_state from drm_plane_state.
Later, for cursor planes, we'll populate the update_plane() func that
takes a fast asynchronous path to implement cursor movements. There, we
would need to call a similar atomic_check func to validate the plane
state, but crtc_state would need to be derived differently.
Refactor mdp5_plane_atomic_check to mdp5_plane_atomic_check_with_state
such that the latter takes crtc_state as an argument.
This is similar to what the intel driver has done for async cursor
updates.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Register cursor drm_planes. The loop in modeset_init that inits the
planes and crtcs has to be refactored a bit. We first iterate all the
hwpipes to find the cursor planes. Then, we loop again to create
crtcs.
In msm_atomic_wait_for_commit_done, remove the check which bypasses
waiting for vsyncs if state->legacy_cursor_updates is true.
We will later create a fast path for cursor position changes in the
cursor plane's update_plane func that doesn't go via the regular
atomic commit path. For rest of cursor related updates, we will have
to wait for vsyncs, so ignore the legacy_cursor_updates flag.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
These are various changes added in preparation for cursor planes:
- Add a pipe_cursor block for 8x96 in mdp5_cfg.
- Add a new pipe CAP called MDP_PIPE_CAP_CURSOR. Use this to ensure we
assign a cursor SSPP for a drm_plane with type DRM_PLANE_TYPE_CURSOR.
- Update mdp5_ctl_blend_mask/ext_blend_mask funcs to incorporate cursor
SSPPs.
- In mdp5_ctl_blend, iterate through MAX_STAGES instead of stage_cnt,
we need to do this because we can now have empty stages in between.
- In mdp5_crtc_atomic_check, make sure that the cursor plane has the
highest zorder, and stage the cursor plane to the maximum stage #
present on the HW.
- Create drm_crtc_funcs that doesn't try to implement cursors using the
older LM cursor HW.
- Pass drm_plane_type in mdp5_plane_init instead of a bool telling
whether plane is primary or not.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
In MDP5 Layer Mixer HW, the blender output is only the blended color
components (i.e R, G and B, or COLOR0/1/2 in MDP5 HW terminology). This
is fed to the BG input of the next blender. We also need to provide an
alpha (COLOR3) value for the BG input at the next stage.
This is configured via using the REG_MDP5_LM_BLEND_COLOR_OUT register.
For each stage, we can propagate either the BG or FG alpha to the next
stage.
The approach taken by the driver is to propagate FG alpha, if the plane
staged on that blender has an alpha. If it doesn't, we try to propagate
the base layer's alpha.
This is borrowed from downstream MDP5 kernel driver. Without this, we
don't see any cursor plane content.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
The MDP5 plane's atomic_check ops doesn't perform clipping tests.
This didn't hurt us much in the past, but clipping becomes important
with cursor planes.
Use drm_plane_helper_check_state, the way rockchip/intel/mtk drivers
already do. Use these drivers as reference.
Clipping requires knowledge of the crtc width and height. This requires
us to call drm_atomic_helper_check_modeset before
drm_atomic_helper_check_planes in the driver's atomic_check op, because
check_modetest will populate the mode for the crtc, needed to populate
the clip rectangle.
We update the plane_enabled(state) local helper to use state->visible,
since state->visible and 'state->fb && state->crtc' represent the same
thing.
One issue with the existing code is that we don't have a way to disable
the plane when it's completely clipped out. Until there isn't an update
on the crtc (which would de-stage the plane), we would still see the
plane in its last 'visible' configuration.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Use SSPP_NONE in mdp5_plane_pipe() if there is now hwpipe allocated for
the drm_plane. Returning '0' means we are returning VIG0 pipe.
Also, use the mdp5_pipe enum to pass around the stage array. Initialize
the stage to SSPP_NONE by default.
We do the above because 1) Cursor plane has to be staged at the topmost
blender of the LM, which can result in empty stages in between 2) In
the future, when we support multiple LMs per CRTC. We could have stages
which don't have any pipe assigned to them.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
We currently create CRTCs equaling to the # of Layer Mixer blocks we
have on the MDP5 HW. This number is generally more than the # of encoders
(INTFs) we have in the MDSS HW. The number of encoders connected to
displays on the platform (as described by DT) would be even lesser.
Create only N drm_crtcs, where N is the number of drm_encoders
successfully registered. To do this, we call modeset_init_intf() before
we init the drm_crtcs and drm_planes.
Because of this change, setting encoder->possible_crtcs needs to be moved
from construct_encoder() to a later point when we know how many CRTCs we
have.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Count can't be non-zero. Changing to uint will also prevent future
warnings.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
For the DSI interfaces, the mdp5_kms core creates 2 encoders for video
and command modes.
Create only a single encoder per interface. When creating the encoder, set
the interface type to MDP5_INTF_MODE_NONE. It's the bridge (DSI/HDMI/eDP)
driver's responsibility to set a different interface type. It can use the
the kms func op set_encoder_mode to change the mode of operation, which
in turn would configure the interface type for the INTF.
In mdp5_cmd_encoder.c, we remove the redundant code, and make the commmand
mode funcs as helpers that are used in mdp5_encoder.c
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Rename the mdp5_encoder_* ops for active displays to
mdp5_vid_encoder_* ops.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
The mdp5 kms driver currently sets up multiple encoders per interface
(INTF), one for each kind of mode of operation it supports.
We create 2 drm_encoders for DSI, one for Video Mode and the other
for Command Mode operation. The reason behind this approach could have
been that we aren't aware of the DSI device's mode of operation when
we create the encoders.
This makes things a bit complicated, since these encoders have to
be further attached to the same DSI bridge. The easier way out is
to create a single encoder, and make the DSI driver set its mode
of operation when we know what the DSI device's mode flags are.
Start with providing a way to set the mdp5_intf_mode using a kms
func that sets the encoder's mode of operation. When constructing
a DSI encoder, we set the mode of operation to Video Mode as
default. When the DSI device is attached to the host, we probe the
DSI mode flags and set the corresponding mode of operation.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
We currently create 2 encoders for DSI interfaces, one for command
mode and other for video mode operation. This isn't needed as we
can't really use both the encoders at the same time. It also makes
connecting bridges harder.
Switch to creating a single encoder. For now, we assume that the
encoder is configured only in video mode. Later, the same encoder
would be usable in both modes.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
