[PATCH v11 1/5] drm/layerscape: Add Freescale DCU DRM driver

Fri Jul 24 00:48:59 PDT 2015

On Fri, Jul 24, 2015 at 11:21:57AM +0800, jianwei wang wrote:
> Hi Dave,
> 
> I think Freescale DCU DRM driver is ready now, can it land?
> 
> I have worked on this driver for about nine month. Daniel Vetter,
> Thierry Reding, Mark yao,
> Alexander Stein, Paul Bolle, Alison Wang, Stefan Agner reviewed this
> pathset. The latest
> version v11 has been send out about an week, and no more comments any more.

On a quick look about overall process there's a few bits missing still:
- review from dt maintainer for the device-tree pieces (review from an
  original author like Alice Wang doesn't count).
- needs one patch for MAINTAINER entry for drm/layerscape.
- just send a pull request to Dave once you have this all.

Cheers, Daniel
> 
> BR.
> Jianwei
> 
> On Mon, Jul 20, 2015 at 5:53 PM, Jianwei Wang
> <jianwei.wang.chn at gmail.com> wrote:
> > This patch add support for Two Dimensional Animation and Compositing
> > Engine (2D-ACE) on the Freescale SoCs.
> >
> > 2D-ACE is a Freescale display controller. 2D-ACE describes
> > the functionality of the module extremely well its name is a value
> > that cannot be used as a token in programming languages.
> > Instead the valid token "DCU" is used to tag the register names and
> > function names.
> >
> > The Display Controller Unit (DCU) module is a system master that
> > fetches graphics stored in internal or external memory and displays
> > them on a TFT LCD panel. A wide range of panel sizes is supported
> > and the timing of the interface signals is highly configurable.
> > Graphics are read directly from memory and then blended in real-time,
> > which allows for dynamic content creation with minimal CPU
> > intervention.
> >
> > The features:
> > (1) Full RGB888 output to TFT LCD panel.
> > (2) Blending of each pixel using up to 4 source layers
> > dependent
> > on size of panel.
> > (3) Each graphic layer can be placed with one pixel resolution
> > in either axis.
> > (4) Each graphic layer support RGB565 and RGB888 direct colors
> > without alpha channel and BGRA8888 BGRA4444 ARGB1555 direct
> > colors
> > with an alpha channel and YUV422 format.
> > (5) Each graphic layer support alpha blending with 8-bit
> > resolution.
> >
> > This is a simplified version, only one primary plane, one
> > framebuffer, one crtc, one connector and one encoder for TFT
> > LCD panel.
> >
> > Signed-off-by: Alison Wang <b18965 at freescale.com>
> > Signed-off-by: Xiubo Li <lixiubo at cmss.chinamobile.com>
> > Signed-off-by: Jianwei Wang <jianwei.wang.chn at gmail.com>
> > Acked-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> > Reviewed-by: Alison Wang <alison.wang at freescale.com>
> > ---
> >
> >
> > Changed in V11
> > -set regmap_config.cache_type to REGCACHE_FLAT
> > Advanced by Alexander Stein
> >
> > Changed in V10
> > -adjust commit log, remove meaningless statement
> > -cleanup code for it's format and style.
> > -remove platform related code out, including of tcon(vf610) and scfg(ls1021a)
> > -remove useless sentences: encoder->crtc = crtc; and connector->encoder = encoder; and so on
> > -add vendor prefix for panel pandle
> > -make a DCU_CTRLDESCLN(x, y)  to avoid high repetition
> > -introduce per-SoC capability structure to avoid check on the OF node's compatible string
> > -Implement some functions: crtc enable and disable, enable and disable VBLANK, plane atomic_disable and atomic_enable -atomic_check and so on
> > -move DCU config sentence to the right place
> > -move get resources functions to  ->probe()
> > -move fsl,dcu.txt to video/ folder
> > -add big-endian describe
> > All advaced by Thierry Reding
> >
> > Changed in V9
> >
> > -put node after calling of_drm_find_panel
> > -split clk_prepare_enable() to clk_prepare() and clk_enable(), just call clk_prepare once, and check return value
> > -check regmap_write/regmap_read return return value
> > -remove useless ".owner    = THIS_MODULE,"
> > All advanced by Mark Yao
> >
> > Changed in V8
> >
> > - Remove useless code
> >  #define DRIVER_NAME     "fsl-dcu-drm"
> >  MODULE_ALIAS("platform:fsl-dcu-drm");
> > Adviced by Paul Bolle
> >
> > Changed in V7
> >
> > - Remove redundant functions and replace deprecated hooker
> > Adviced by Daniel Vetter
> > - Replace drm_platform_init with drm_dev_alloc/register
> > Adviced by Daniel Vetter
> >
> > Changed in V6
> >
> > - Add NEC nl4827hc19_05b panel to panel-simple.c
> > Adviced by Mark Yao
> > - Add DRIVER_ATOMIC for driver_features
> > Adviced by Mark Yao
> > - check fsl_dev if it's NULL at PM suspend/resume
> > Adviced by Mark Yao
> >
> > Changed in V5
> >
> > - Update commit message
> > - Add layer registers initialization
> > - Remove unused functions
> > - Rename driver folder
> > Adviced by Stefan Agner
> > - Move pixel clock control functions to fsl_dcu_drm_drv.c
> > - remove redundant enable the clock implicitly using regmap
> > - Add maintainer message
> >
> > Changed in V4:
> >
> > -This version doesn't have functionality changed
> > Just a minor adjustment.
> >
> > Changed in V3:
> >
> > - Test driver on Vybrid board and add compatible string
> > - Remove unused functions
> > - set default crtc for encoder
> > - replace legacy functions with atomic help functions
> > Adviced by Daniel Vetter
> > - Set the unique name of the DRM device
> > - Implement irq handle function for vblank interrupt
> >
> > Changed in v2:
> > - Add atomic support
> > Adviced by Daniel Vetter
> > - Modify bindings file
> > - Rename node for compatibility
> > - Move platform related code out for compatibility
> > Adviced by Stefan Agner
> >
> >
> >  .../devicetree/bindings/video/fsl,dcu.txt          |  22 ++
> >  MAINTAINERS                                        |   8 +
> >  drivers/gpu/drm/Kconfig                            |   2 +
> >  drivers/gpu/drm/Makefile                           |   1 +
> >  drivers/gpu/drm/fsl-dcu/Kconfig                    |  18 +
> >  drivers/gpu/drm/fsl-dcu/Makefile                   |   7 +
> >  drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_crtc.c         | 208 +++++++++++
> >  drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_crtc.h         |  19 +
> >  drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c          | 403 +++++++++++++++++++++
> >  drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.h          | 197 ++++++++++
> >  drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_fbdev.c        |  23 ++
> >  drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_kms.c          |  43 +++
> >  drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_output.h       |  33 ++
> >  drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_plane.c        | 261 +++++++++++++
> >  drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_plane.h        |  17 +
> >  drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c          | 182 ++++++++++
> >  16 files changed, 1444 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/video/fsl,dcu.txt
> >  create mode 100644 drivers/gpu/drm/fsl-dcu/Kconfig
> >  create mode 100644 drivers/gpu/drm/fsl-dcu/Makefile
> >  create mode 100644 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_crtc.c
> >  create mode 100644 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_crtc.h
> >  create mode 100644 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
> >  create mode 100644 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.h
> >  create mode 100644 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_fbdev.c
> >  create mode 100644 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_kms.c
> >  create mode 100644 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_output.h
> >  create mode 100644 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_plane.c
> >  create mode 100644 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_plane.h
> >  create mode 100644 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c
> >

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch