[PATCH v3 0/6] drm/imx: Introduce i.MX8qm/qxp DPU DRM

Liu Ying
2020-12-07T03:30:11Z

Hi,

This patch set introduces i.MX8qm/qxp Display Processing Unit(DPU) DRM support.

DPU is comprised of a blit engine for 2D graphics, a display controller
and a command sequencer. Outside of DPU, optional prefetch engines can
fetch data from memory prior to some DPU fetchunits of blit engine and
display controller. The pre-fetchers support linear formats and Vivante
GPU tile formats.

Reference manual can be found at:
https://www.nxp.com/webapp/Download?colCode=IMX8DQXPRM

This patch set adds kernel modesetting support for the display controller part.
It supports two CRTCs per display controller, several planes, prefetch
engines and some properties of CRTC and plane. Currently, the registers of
the controller is accessed without command sequencer involved, instead just by
using CPU. DRM connectors would be created from the DPU KMS driver.

If people want to try this series with i.MX8qxp, clock patches can be found at:
https://www.spinics.net/lists/arm-kernel/msg859763.html

and, power domain patches have already landed in Shawn's
i.MX for-next git branch.

This version drops the device tree patches because we'll use new dt binding
way to support i.MX8qm/qxp clocks. It depends on the below series to do basic
conversions for the platforms which has not landed yet:
https://www.spinics.net/lists/linux-mmc/msg61965.html

I will send other patch sets to add downstream bridges(embedded in i.MX8qxp)
to support LVDS displays.

A brief look at the pipe:
prefetch eng -> DPU -> pixel combiner -> pixel link -> pixel to DPI(pxl2dpi) ->
LVDS display bridge(LDB)

Patch 1 ~ 3 add dt-bindings for DPU and prefetch engines.
Patch 4 is a minor improvement of a macro to suppress warning as the KMS driver
uses it.
Patch 5 introduces the DPU DRM support.
Patch 6 updates MAINTAINERS.

Welcome comments, thanks.

v2->v3:
* Fix DPU DRM driver build warnings which are
Reported-by: kernel test robot <lkp@intel.com>.
* Add a missing blank line in include/drm/drm_atomic.h.

v1->v2:
* Test this patch set also with i.MX8qm LVDS displays.
* Drop the device tree patches because we'll use new dt binding way to
support i.MX8qm/qxp clocks. This depends on a not-yet-landed patch set
to do basic conversions for the platforms.
* Fix dt binding yamllint warnings.
* Require bypass0 and bypass1 clocks for both i.MX8qxp and i.MX8qm in DPU's
dt binding documentation.
* Use new dt binding way to add clocks in the dt binding examples.
* Address several comments from Laurentiu on the DPU DRM patch.

Liu Ying (6):
dt-bindings: display: imx: Add i.MX8qxp/qm DPU binding
dt-bindings: display: imx: Add i.MX8qxp/qm PRG binding
dt-bindings: display: imx: Add i.MX8qxp/qm DPR channel binding
drm/atomic: Avoid unused-but-set-variable warning on
for_each_old_plane_in_state
drm/imx: Introduce i.MX8qm/qxp DPU DRM
MAINTAINERS: add maintainer for i.MX8qxp DPU DRM driver

.../bindings/display/imx/fsl,imx8qxp-dprc.yaml | 87 ++
.../bindings/display/imx/fsl,imx8qxp-dpu.yaml | 416 +++++++++
.../bindings/display/imx/fsl,imx8qxp-prg.yaml | 60 ++
MAINTAINERS | 9 +
drivers/gpu/drm/imx/Kconfig | 1 +
drivers/gpu/drm/imx/Makefile | 1 +
drivers/gpu/drm/imx/dpu/Kconfig | 10 +
drivers/gpu/drm/imx/dpu/Makefile | 10 +
drivers/gpu/drm/imx/dpu/dpu-constframe.c | 170 ++++
drivers/gpu/drm/imx/dpu/dpu-core.c | 881 ++++++++++++++++++++
drivers/gpu/drm/imx/dpu/dpu-crtc.c | 926 +++++++++++++++++++++
drivers/gpu/drm/imx/dpu/dpu-crtc.h | 62 ++
drivers/gpu/drm/imx/dpu/dpu-disengcfg.c | 114 +++
drivers/gpu/drm/imx/dpu/dpu-dprc.c | 721 ++++++++++++++++
drivers/gpu/drm/imx/dpu/dpu-dprc.h | 40 +
drivers/gpu/drm/imx/dpu/dpu-drv.c | 297 +++++++
drivers/gpu/drm/imx/dpu/dpu-drv.h | 28 +
drivers/gpu/drm/imx/dpu/dpu-extdst.c | 296 +++++++
drivers/gpu/drm/imx/dpu/dpu-fetchdecode.c | 291 +++++++
drivers/gpu/drm/imx/dpu/dpu-fetcheco.c | 221 +++++
drivers/gpu/drm/imx/dpu/dpu-fetchlayer.c | 151 ++++
drivers/gpu/drm/imx/dpu/dpu-fetchunit.c | 609 ++++++++++++++
drivers/gpu/drm/imx/dpu/dpu-fetchunit.h | 191 +++++
drivers/gpu/drm/imx/dpu/dpu-fetchwarp.c | 247 ++++++
drivers/gpu/drm/imx/dpu/dpu-framegen.c | 392 +++++++++
drivers/gpu/drm/imx/dpu/dpu-gammacor.c | 220 +++++
drivers/gpu/drm/imx/dpu/dpu-hscaler.c | 272 ++++++
drivers/gpu/drm/imx/dpu/dpu-kms.c | 543 ++++++++++++
drivers/gpu/drm/imx/dpu/dpu-kms.h | 23 +
drivers/gpu/drm/imx/dpu/dpu-layerblend.c | 345 ++++++++
drivers/gpu/drm/imx/dpu/dpu-plane.c | 703 ++++++++++++++++
drivers/gpu/drm/imx/dpu/dpu-plane.h | 56 ++
drivers/gpu/drm/imx/dpu/dpu-prg.c | 433 ++++++++++
drivers/gpu/drm/imx/dpu/dpu-prg.h | 45 +
drivers/gpu/drm/imx/dpu/dpu-prv.h | 203 +++++
drivers/gpu/drm/imx/dpu/dpu-tcon.c | 249 ++++++
drivers/gpu/drm/imx/dpu/dpu-vscaler.c | 305 +++++++
drivers/gpu/drm/imx/dpu/dpu.h | 389 +++++++++
include/drm/drm_atomic.h | 5 +-
39 files changed, 10021 insertions(+), 1 deletion(-)
create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dprc.yaml
create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dpu.yaml
create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-prg.yaml
create mode 100644 drivers/gpu/drm/imx/dpu/Kconfig
create mode 100644 drivers/gpu/drm/imx/dpu/Makefile
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-constframe.c
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-core.c
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-crtc.c
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-crtc.h
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-disengcfg.c
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-dprc.c
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-dprc.h
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-drv.c
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-drv.h
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-extdst.c
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-fetchdecode.c
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-fetcheco.c
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-fetchlayer.c
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-fetchunit.c
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-fetchunit.h
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-fetchwarp.c
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-framegen.c
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-gammacor.c
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-hscaler.c
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-kms.c
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-kms.h
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-layerblend.c
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-plane.c
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-plane.h
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-prg.c
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-prg.h
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-prv.h
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-tcon.c
create mode 100644 drivers/gpu/drm/imx/dpu/dpu-vscaler.c
create mode 100644 drivers/gpu/drm/imx/dpu/dpu.h

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2.7.4