Signed-off-by: Guido Günther <guido.gunther@puri.sm>

This reverts commit f4a30d83.

Otherwise it breaks mipi
Signed-off-by: Guido Günther <guido.gunther@puri.sm>

This reverts commit 87059726.

Signed-off-by: Guido Günther <guido.gunther@puri.sm>

Merge branch 'refs/heads/forward-upstream/next-20191018/touch-config/v0-wip' into f/next-20191018/devkit-drm-integration/v1-wip-Aev0fe7AhD2j

* refs/heads/forward-upstream/next-20191018/touch-config/v0-wip:
  librem5-devkit: Enable touchscreen
  input: touchscreen: Selelct TOUCHSCREEN_PROPERTIES for drivers using it
  librem5-devkit_defconfig: Enable imx8 mixel dphy

Merge branch 'refs/heads/forward-upstream/next-20191018/mxsfb+nwl/v7' into f/next-20191018/devkit-drm-integration/v1-wip-Aev0fe7AhD2j

* refs/heads/forward-upstream/next-20191018/mxsfb+nwl/v7: (33 commits)
  nwl: Disable reset quirk
  Revert "drm/mxsfb: Add support for horizontal stride"
  Revert "drm/mxsfb: Add support for live pixel format change"
  Revert "drm/mxsfb: Update mxsfb with additional pixel formats"
  drm/bridge: Add NWL MIPI DSI host controller support
  dt-bindings: display/bridge: Add binding for NWL mipi dsi host controller
  dts: arm64: devkit: adjust device tree
  arm64: dts: imx8mq: Init rates and parents configs for clocks
  librem5-devkit: Enable multiplexer in defconfig
  drm/mxsfb: Add support for live pixel format change
  drm/mxsfb: Add support for horizontal stride
  drm/mxsfb: Clear OUTSTANDING_REQS bits
  drm/mxsfb: Improve the axi clock usage
  drm/mxsfb: Update mxsfb to support LCD reset
  dt-bindings: display: Add max-memory-bandwidth property for mxsfb
  drm/mxsfb: Add max-memory-bandwidth property for MXSFB
  drm/mxsfb: Signal mode changed when bpp changed
  drm/mxsfb: Fix the vblank events
  drm/mxsfb: Update mxsfb with additional pixel formats
  drm/mxsfb: Update register definitions using bit manipulation defines
  ...

Merge branch 'refs/heads/forward-upstream/next-20191018/imx8-soc-info/v2-wip' into f/next-20191018/devkit-drm-integration/v1-wip-Aev0fe7AhD2j

* refs/heads/forward-upstream/next-20191018/imx8-soc-info/v2-wip:
  soc: imx: Try harder to get imx8mq SoC revisions
  librem5-devkit_defconfig: Enable imx8 mixel dphy

Merge branch 'refs/heads/forward-upstream/next-20191018/gpu-thermal/v2' into f/next-20191018/devkit-drm-integration/v1-wip-Aev0fe7AhD2j

* refs/heads/forward-upstream/next-20191018/gpu-thermal/v2:
  dt-bindings: etnaviv: Add #cooling-cells
  librem5-devkit_defconfig: Enable imx8 mixel dphy

Signed-off-by: Guido Günther <guido.gunther@puri.sm>

This reverts commit 4cbaf59b.

This reverts commit 81588e44.

This reverts commit b45ce5e0.

This adds initial support for the NWL MIPI DSI Host controller found on
i.MX8 SoCs.

It adds support for the i.MX8MQ but the same IP can be found on
e.g. the i.MX8QXP.

It has been tested on the Librem 5 devkit using mxsfb.
Signed-off-by: Guido Günther <agx@sigxcpu.org>
Co-developed-by: Robert Chiras <robert.chiras@nxp.com>
Signed-off-by: Robert Chiras <robert.chiras@nxp.com>
Tested-by: Robert Chiras <robert.chiras@nxp.com>

The Northwest Logic MIPI DSI IP core can be found in NXPs i.MX8 SoCs.
Signed-off-by: Guido Günther <agx@sigxcpu.org>
Tested-by: Robert Chiras <robert.chiras@nxp.com>
Reviewed-by: Rob Herring <robh@kernel.org>

Signed-off-by: Guido Günther <guido.gunther@puri.sm>

Otherwise we might end up with modules that can't be loaded:

  modprobe: ERROR: could not insert 'goodix': Unknown symbol in module, or unknown parameter (see dmesg)
  [   15.190397] goodix: Unknown symbol touchscreen_report_pos (err -2)
  [   15.221560] goodix: Unknown symbol touchscreen_parse_properties (err -2)
  [   64.677545] goodix: Unknown symbol touchscreen_report_pos (err -2)
  [   64.683767] goodix: Unknown symbol touchscreen_parse_properties (err -2)
Signed-off-by: Guido Günther <agx@sigxcpu.org>

Signed-off-by: Guido Günther <guido.gunther@puri.sm>

Add the initial configuration for clocks that need default parent and rate
setting. This is based on the vendor tree clock provider parents and rates
configuration except this is doing the setup in dts rather then using clock
consumer API in a clock provider driver.

Note that by adding the initial rate setting for audio_pll1/audio_pll
setting we need to remove it from imx8mq-librem5-devkit.dts
imx8mq-librem5-devkit.dts
Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>

(todo: check if generic arm64 config has it)
Signed-off-by: Guido Günther <guido.gunther@puri.sm>

This IP requires full stop and re-start when changing display timings,
but we can change the pixel format while running.
Signed-off-by: Robert Chiras <robert.chiras@nxp.com>

Besides the eLCDIF block, there is another IP block, used in the past
for EPDC panels. Since the iMX.8mq doesn't have an EPDC connector, this
block is not documented, but we can use it to do additional operations
on the frame buffer.
In this case, we can use the pigeon registers from this IP block in
order to do horizontal crop on the frame buffer processed by the eLCDIF
block.
Signed-off-by: Robert Chiras <robert.chiras@nxp.com>

Bit 21 can alter the CTRL2_OUTSTANDING_REQS value right after the eLCDIF
is enabled, since it comes up with default value of 1 (this behaviour
has been seen on some imx8 platforms).
In order to fix this, clear CTRL2_OUTSTANDING_REQS bits before setting
its value.
Signed-off-by: Robert Chiras <robert.chiras@nxp.com>

Currently, the enable of the axi clock return status is ignored, causing
issues when the enable fails then we try to disable it. Therefore, it is
better to check the return status and disable it only when enable
succeeded.
Also, remove the helper functions around clk_axi, since we can directly
use the clk API function for enable/disable the clock. Those functions
are already checking for NULL clk and returning 0 if that's the case.
Signed-off-by: Robert Chiras <robert.chiras@nxp.com>
Acked-by: Leonard Crestez <leonard.crestez@nxp.com>

The eLCDIF controller has control pin for the external LCD reset pin.
Add support for it and assert this pin in enable and de-assert it in
disable.
Signed-off-by: Robert Chiras <robert.chiras@nxp.com>

Add new optional property 'max-memory-bandwidth', to limit the maximum
bandwidth used by the MXSFB_DRM driver.
Signed-off-by: Robert Chiras <robert.chiras@nxp.com>

Because of stability issues, we may want to limit the maximum bandwidth
required by the MXSFB (eLCDIF) driver.
Signed-off-by: Robert Chiras <robert.chiras@nxp.com>

Add mxsfb_atomic_helper_check to signal mode changed when bpp changed.
This will trigger the execution of disable/enable on
a modeset with different bpp than the current one.
Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
Signed-off-by: Robert Chiras <robert.chiras@nxp.com>

Currently, the vblank support is not correctly implemented in MXSFB_DRM
driver. The call to drm_vblank_init is made with mode_config.num_crtc
which at that time is 0. Because of this, vblank is not activated, so
there won't be any vblank event submitted.
For example, when running modetest with the '-v' parameter will result
in an astronomical refresh rate (10000+ Hz), because of that.
Signed-off-by: Robert Chiras <robert.chiras@nxp.com>

Since version 4 of eLCDIF, there are some registers that can do
transformations on the input data, like re-arranging the pixel
components. By doing that, we can support more pixel formats.
This patch adds support for X/ABGR and RGBX/A. Although, the local alpha
is not supported by eLCDIF, the alpha pixel formats were added to the
supported pixel formats but it will be ignored. This was necessary since
there are systems (like Android) that requires such pixel formats.

Also, add support for the following pixel formats:
            16 bpp: RG16 ,BG16, XR15, XB15, AR15, AB15

Set the bus format based on input from the user and panel
capabilities.
Save the bus format in crtc->mode.private_flags, so the bridge can
use it.
Signed-off-by: Robert Chiras <robert.chiras@nxp.com>
Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>

Use BIT(x) and GEN_MASK(h, l) for better representation the inside of
various registers.
Signed-off-by: Robert Chiras <robert.chiras@nxp.com>

Some of the registers, like LCDC_CTRL, CTRL2_OUTSTANDING_REQS and
CTRL1_RECOVERY_ON_UNDERFLOW needs to be properly cleared/initialized
for a better start and stop routine.
Signed-off-by: Robert Chiras <robert.chiras@nxp.com>

Some of the existing registers in this controller are not defined, but
also not used. Add them to the register definitions, so that they can be
easily used in future improvements or fixes.
Signed-off-by: Robert Chiras <robert.chiras@nxp.com>

Signed-off-by: Guido Günther <guido.gunther@puri.sm>

Signed-off-by: Guido Günther <guido.gunther@puri.sm>

This changes the clock tree from

to

 osc_25m                             10       12        0    25000000          0     0  50000
   video_pll1_ref_sel                 1        1        0    25000000          0     0  50000
       video_pll1_ref_div             1        1        0     5000000          0     0  50000
          video_pll1                  1        1        0   593999998          0     0  50000
             video_pll1_bypass        1        1        0   593999998          0     0  50000
                video_pll1_out        2        2        0   593999998          0     0  50000
                   dsi_phy_ref        1        1        0    23760000          0     0  50000
Signed-off-by: Guido Günther <agx@sigxcpu.org>

This enables the panel to turn the backlight on and off.
Signed-off-by: Guido Günther <guido.gunther@puri.sm>

Enable LCD panel output by adding nodes for the NWL DSI host controller,
the Rocktech panel and the eLCDIF display controller.
Signed-off-by: Guido Günther <agx@sigxcpu.org>