[PATCH v11 1/5] drm/layerscape: Add Freescale DCU DRM driver
jianwei wang
jianwei.wang.chn at gmail.com
Thu Jul 23 20:21:57 PDT 2015
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.
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
>
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