Instead of failing with -EINVAL when conflicting encoders are found,
the legacy set_config will disable other connectors when encoders
conflict.

With the previous commit this becomes a lot easier to implement.
set_config only adds connectors to the state that are modified,
and because of the previous commit that calls add_affected_connectors
only on set->crtc it means any connector not part of the modeset can
be stolen from. We disable the connector in that case, and possibly
the crtc if required.

Atomic modeset itself still doesn't allow encoder stealing, the results
would be too unpredictable.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1456996662-8704-5-git-send-email-maarten.lankhorst@linux.intel.com

There's no need to have a separate function to get the crtc
which is stolen, this can already be found when actually
stealing the encoder.

drm_for_each_connector already checks for connection_mutex, so
use that macro now.

Changes since v1:
- Do not check for NULL crtc in connector_state,
  this may happen when a crtc is disabled and its encoder stolen.
- Because of this, use connector->state->crtc instead of conn_state->crtc.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1456996662-8704-4-git-send-email-maarten.lankhorst@linux.intel.com

This patch set nukes all the dummy crtc mode_fixup implementations.
(made on top of Daniel topic/drm-misc branch)
Signed-off-by: NCarlos Palminha <palminha@synopsys.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/0f8f948babd93fce8523253b0f525446e2f565db.1455630967.git.palminha@synopsys.com

This patch set nukes all the dummy crtc mode_fixup implementations.
(made on top of Daniel topic/drm-misc branch)
Signed-off-by: NCarlos Palminha <palminha@synopsys.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/40a78cafba2cd5b391d244e806613192b3a31413.1455630967.git.palminha@synopsys.com

This patch set nukes all the dummy crtc mode_fixup implementations.
(made on top of Daniel topic/drm-misc branch)
Signed-off-by: NCarlos Palminha <palminha@synopsys.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/a9827a57b25509dae29c0e8d09a9063a11970647.1455630967.git.palminha@synopsys.com

This patch set nukes all the dummy crtc mode_fixup implementations.
(made on top of Daniel topic/drm-misc branch)
Signed-off-by: NCarlos Palminha <palminha@synopsys.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/ae865f0deca4e64a0f47f2d2d14b54ff00c0672e.1455630967.git.palminha@synopsys.com

This patch set nukes all the dummy crtc mode_fixup implementations.
(made on top of Daniel topic/drm-misc branch)
Signed-off-by: NCarlos Palminha <palminha@synopsys.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/897eae438eec566078b1872d7654c4863e4e4e57.1455630967.git.palminha@synopsys.com

This patch set nukes all the dummy crtc mode_fixup implementations.
(made on top of Daniel topic/drm-misc branch)
Signed-off-by: NCarlos Palminha <palminha@synopsys.com>
Acked-by: NBoris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/e4bdb8552c245f8b73084b93da60460a00f7798c.1455630967.git.palminha@synopsys.com

This patch set nukes all the dummy crtc mode_fixup implementations.
(made on top of Daniel topic/drm-misc branch)
Signed-off-by: NCarlos Palminha <palminha@synopsys.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/08d27e27582fb2daa48555ab542245c6cf0a2268.1455630967.git.palminha@synopsys.com

This patch set nukes all the dummy crtc mode_fixup implementations.
(made on top of Daniel topic/drm-misc branch)
Signed-off-by: NCarlos Palminha <palminha@synopsys.com>
Reviewed-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

This patch set nukes all the dummy crtc mode_fixup implementations.
(made on top of Daniel topic/drm-misc branch)
Signed-off-by: NCarlos Palminha <palminha@synopsys.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

This patch set nukes all the dummy crtc mode_fixup implementations.
(made on top of Daniel topic/drm-misc branch)
Signed-off-by: NCarlos Palminha <palminha@synopsys.com>
Reviewed-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/101f043d5fa747291c09ae765bac4d55c6e39988.1455630967.git.palminha@synopsys.com

This patch set nukes all the dummy crtc mode_fixup implementations.
(made on top of Daniel topic/drm-misc branch)
Signed-off-by: NCarlos Palminha <palminha@synopsys.com>
Reviewed-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/becab4ff666eca77162e5cd978087f2d3fb3e308.1455630967.git.palminha@synopsys.com

This patch set nukes all the dummy crtc mode_fixup implementations.
(made on top of Daniel topic/drm-misc branch)
Signed-off-by: NCarlos Palminha <palminha@synopsys.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

This patch set nukes all the dummy crtc mode_fixup implementations.
(made on top of Daniel topic/drm-misc branch)
Signed-off-by: NCarlos Palminha <palminha@synopsys.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/11327d1a3c3b6623064f6d82efa96e7993f77f38.1455630967.git.palminha@synopsys.com

This patch set nukes all the dummy crtc mode_fixup implementations.
(made on top of Daniel topic/drm-misc branch)
Signed-off-by: NCarlos Palminha <palminha@synopsys.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/3d089c84bcb1aafd485d4944ad472f9843c38eaf.1455630967.git.palminha@synopsys.com

This patch set nukes all the dummy crtc mode_fixup implementations.
(made on top of Daniel topic/drm-misc branch)
Signed-off-by: NCarlos Palminha <palminha@synopsys.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/5a3c41fed15847549f9bdeae89b72705b4756cc4.1455630967.git.palminha@synopsys.com

Minor cleanup, connector and connector_state are always non-NULL here.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1456303053-28806-3-git-send-email-maarten.lankhorst@linux.intel.com

With the addition of crtc_state->connector_mask other connectors from
different crtc's aren't needed any more to determine if a crtc has
connectors, so only call add_affected_connectors on the target crtc.
This allows a cleanup to first remove all current connectors, then
add all set->connectors to the target crtc.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1456303053-28806-2-git-send-email-maarten.lankhorst@linux.intel.com

The function __drm_framebuffer_unregister() has boilerplate code to drop idr
reference.  Let's replace it with drm_mode_object_put() to simplify the code.
Signed-off-by: NLiu Ying <gnuiyl@gmail.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1456716070-2602-1-git-send-email-gnuiyl@gmail.com

As previously discussed, this is my first pull request for the DCU DRM
driver along with the change in MAINTAINERS.
https://lkml.org/lkml/2016/1/7/26

The pull contains some code cleanup changes (e.g. removing all error
handling for the regmap calls) and several fixes.

* 'for-next' of http://git.agner.ch/git/linux-drm-fsl-dcu:
  drm/fsl-dcu: fix register initialization
  drm/fsl-dcu: use mode flags for hsync/vsync polarity
  drm/fsl-dcu: fix alpha blending
  drm/fsl-dcu: mask all interrupts on initialization
  drm/fsl-dcu: handle initialization errors properly
  drm/fsl-dcu: avoid memory leak on errors
  drm/fsl-dcu: remove regmap return value checks
  drm/fsl-dcu: specify volatile registers
  drm: fsl-dcu: Fix no fb check bug
  MAINTAINERS: update for Freescale DCU DRM driver

The layer enumeration start with 0 (0-15 for LS1021a and 0-63 for
Vybrid) whereas the register enumeration start from 1 (1-10 for
LS1021a and 1-9 for Vybrid). The loop started off from 0 for both
iterations and initialized the number of layers inclusive, which
is one layer too many.

All extensively written registers seem to be unassigned, it seems
that the write to those registers did not do any harm in practice.
Signed-off-by: NStefan Agner <stefan@agner.ch>

The current default configuration is as follows:
- Invert VSYNC signal (active LOW)
- Invert HSYNC signal (active LOW)

The mode flags allow to specify the required polarity per
mode. Furthermore, none of the current driver settings is
actually a standard polarity.

This patch applies the current driver default polarities as
explicit flags to the display which has been introduced with
the driver (NEC WQVGA "nec,nl4827hc19-05b"). The driver now
also parses the flags field and applies the configuration
accordingly, by using the following values as standard
polarities: (e.g. when no flags are specified):
- VSYNC signal not inverted (active HIGH)
- HSYNC signal not inverted (active HIGH)
Acked-by: NThierry Reding <treding@nvidia.com>
Signed-off-by: NStefan Agner <stefan@agner.ch>

Fix alpha blending by enabling alpha blending for the whole frame if
a color mode with alpha channel is selected (DRM_FORMAT_ARGB*). Also
support color modes without alpha channel (DRM_FORMAT_XRGB*) by just
not enabling alpha blending on layer level.
Signed-off-by: NStefan Agner <stefan@agner.ch>

The state of the interrupt mask register on initialization is
unknown, e.g. U-Boot could already used the DCU. So depending on
the boot loader, the outcome of the interrupt mask register could
be different. A defined state is much more preferable. Also, there
is no value in keeping interrupts enabled which we don't need.
Therefor, mask all interrupts on initialization.
Signed-off-by: NStefan Agner <stefan@agner.ch>

If initialization fails (e.g. due to missing panel node or deferred
probe) make sure to roll-back all operations and return the error
code.
Signed-off-by: NStefan Agner <stefan@agner.ch>

Improve error handling during CRTC initialization. Especially avoid
memory leaks in the primary plane initialization error path.
Signed-off-by: NStefan Agner <stefan@agner.ch>

It is not common to do regmap return value checks, especially not
for memory mapped device. We can rule out most error returns since
the conditions are static and we know they are ok (e.g. offset
aligned to register stride). Also without proper error handling
they are not really valuable for the user. Hence remove most of
them.

The check in the interrupt handler is worth keeping since a
volatile register won't be readable in case register caching is
still enabled.
Signed-off-by: NStefan Agner <stefan@agner.ch>

Since we are using cached registers, we need to specify volatile
registers explicitly to avoid reading their value from the cache.
This allows to read the correct interrupt status in fsl_dcu_drm_irq
and clear the asserted bits only.
Signed-off-by: NStefan Agner <stefan@agner.ch>

For state->fb or state->crtc may be NULL in fsl_dcu_drm_plane_atomic_check
function, if so, return 0.
Signed-off-by: NMeng Yi <meng.yi@nxp.com>
Signed-off-by: NJianwei Wang <jianwei.wang.chn@gmail.com>
Signed-off-by: NStefan Agner <stefan@agner.ch>

Promote myself as new maintainer of the Freescale DCU DRM driver.
Acked-by: NJianwei Wang <jianwei.wang.chn@gmail.com>
Signed-off-by: NStefan Agner <stefan@agner.ch>

rcar-du updates.

* 'drm/next/du' of git://linuxtv.org/pinchartl/fbdev: (281 commits)
  drm: rcar-du: Add tri-planar memory formats support
  drm: rcar-du: Add probe deferral debug messages
  drm: rcar-du: lvds: Add R-Car Gen3 support
  drm: rcar-du: lvds: Rename PLLEN bit to PLLON
  drm: rcar-du: lvds: Fix PLL frequency-related configuration
  drm: rcar-du: lvds: Avoid duplication of clock clamp code
  drm: rcar-du: Add R8A7795 device support
  drm: rcar-du: Output the DISP signal on the ODDF pin
  drm: rcar-du: Output the DISP signal on the DISP pin
  drm: rcar-du: Support up to 4 CRTCs
  drm: rcar-du: Drop LVDS double dependency on OF
  drm: rcar-du: Enable compilation on ARM64
  drm: rcar-du: Fix compile warning on 64-bit platforms
  drm: rcar-du: Expose the VSP1 compositor through KMS planes
  drm: rcar-du: Move plane allocator to rcar_du_plane.c
  drm: rcar-du: Restart the DU group when a plane source changes
  drm: rcar-du: Add VSP1 compositor support
  drm: rcar-du: Add VSP1 support to the planes allocator
  drm: rcar-du: Refactor plane setup
  drm: rcar-du: Compute plane DDCR4 register value directly
  ...

Those formats are supported on Gen3 only.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

Print a message when the HDMI I2C slave encoder can't be found to help
debugging probe deferral issues.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

The LVDS encoder differs slightly in Gen3 SoCs in its PLL configuration.
Add support for the Gen3 LVDS PLL parameters and startup procedure.
Signed-off-by: NKoji Matsuoka <koji.matsuoka.xm@renesas.com>
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

The bit is named PLLON in the datasheet, rename it.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

The frequency checks don't match the datasheet, fix them.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

Replace the duplicate code by a single central function.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

Document the R8A7795-specific DT bindings and support them in the
driver. The HDMI and LVDS outputs are currently not supported.
Signed-off-by: NKoji Matsuoka <koji.matsuoka.xm@renesas.com>
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

The ODDF signal, output by default on the ODDF pin, isn't used on any
board supported in the kernel. As the Gen3 Salvator-X board uses the
ODDF pin as a DISP signal, hardcode that configuration in the driver.

Use of the ODDF signal will be implemented later through proper DT-based
configuration of the DU pins.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>