The Amlogic GX SoCs implements a Synopsys DesignWare HDMI TX Controller in combination with a very custom PHY.
This patchset depends on Laurent Pinchart patchset merged in drm-misc-next and my v4 patchset at [1] to permit PHY control from outside the dw-hdmi driver.
The Synopsys DesignWare HDMI TX Controller is integrated like : ___________________________________ | HDMI TOP |<= HPD |___________________________________| | | | HDMI-TX-| Synopsys HDMI | HDMI PHY |=> TMDS | Controller |________________| |___________________________________|<=> DDC
And uses the following paths for Pixels Encoding : _____ _____ ____________________ vd1---| |-| | | VENC /---------|----VDAC vd2---| VIU |-| VPP |-|-----ENCI/-ENCI_DVI-|\ osd1--| |-| | | \ | X--HDMI-TX osd2--|_____|-|_____| | |-ENCP--ENCP_DVI-|/ | | | | --ENCL-----------|----LVDS |____________________|
The ENCI and ENCP encoders pre-formats the data for the ENCI-DVI and ENCP-DVI encoders. Those DVI encoders will format the pixels for the Synopsys DesignWare HDMI TX Controller.
In order to support display modes, the ENCI and ENCP encoders needs very specific parameters for *each* display modes, so usage of the CEA VIC identifier is necessary. But the DVI timings are generated from the drm_mode structure in a generic way.
To simplify the first push, only the main CEA modes are supported up to 1920x1080p60. Supporting the 480i and 576i needs tweaking in the dw-hdmi in order to support the Clock Doubling necessary for these modes.
Support for more traditional modes like the EDID fallback modes is planned but will need tome additionnal handling along the CEA modes. Support for 4k2k modes needs to be able to get the EDID HDMI modes, but for now only the HDMI 1.4 modes are currently available in the drm_edid implementation.
This patchset does : - Fixes the CRTC handling - Fixes the registers definitions - Adds support for device components registration along of-graph - Adds support for HDMI clocks - Adds support for HDMI VENC video modes - Adds support for the Custom HDMI PHY using callbacks added in [1] and [2] - Adds CMA node to reserve enougth memory for 1080p display - Adds the HDMI controller et connector modes on selected boards - Adds a proper dt-bindings for the HDMI controller et connector - Add RST documentation for Meson DRM driver - Updates the MAINTAINERS file to track the new files
Changes since v1 patchset at [2] : - Add the meson drm documentation from [3] to this patchset - Update with new bus formats and HPD callbacks - Drop all the of_machine_is_compatible
[1] http://lkml.kernel.org/r/1490109161-20529-1-git-send-email-narmstrong@baylib... [2] http://lkml.kernel.org/r/1488469207-523-1-git-send-email-narmstrong@baylibre... [3] http://lkml.kernel.org/r/1488536068-9407-1-git-send-email-narmstrong@baylibr...
Neil Armstrong (13): drm/meson: Use crtc_state for hdisplay and fix atomic flush/enable sync for vsync commit drm/meson: Add missing HDMI register drm/meson: Add support for components drm/meson: venc_cvbs: no more return -ENODEV if CVBS is not available drm/meson: add support for HDMI clock support drm/meson: Add support for HDMI venc modes and settings drm/meson: Add support for HDMI encoder and DW-HDMI bridge + PHY ARM64: dts: meson-gx: Add shared CMA dma memory pool ARM64: dts: meson-gx: Add support for HDMI output dt-bindings: Add bindings for the Amlogic Meson dw-hdmi extension drm/meson: Convert existing documentation to actual kerneldoc drm/meson: Add RST to bring together kerneldoc MAINTAINERS: update files for Amlogic DRM Driver
.../bindings/display/amlogic,meson-dw-hdmi.txt | 111 ++ Documentation/gpu/index.rst | 1 + Documentation/gpu/meson.rst | 61 + MAINTAINERS | 2 + .../arm64/boot/dts/amlogic/meson-gx-p23x-q20x.dtsi | 39 + arch/arm64/boot/dts/amlogic/meson-gx.dtsi | 40 + .../boot/dts/amlogic/meson-gxbb-nexbox-a95x.dts | 23 + arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi | 23 + arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi | 12 + .../dts/amlogic/meson-gxl-s905x-nexbox-a95x.dts | 23 + arch/arm64/boot/dts/amlogic/meson-gxl.dtsi | 13 + .../arm64/boot/dts/amlogic/meson-gxm-nexbox-a1.dts | 23 + arch/arm64/boot/dts/amlogic/meson-gxm.dtsi | 3 + drivers/gpu/drm/meson/Kconfig | 6 + drivers/gpu/drm/meson/Makefile | 1 + drivers/gpu/drm/meson/meson_canvas.c | 4 +- drivers/gpu/drm/meson/meson_crtc.c | 15 +- drivers/gpu/drm/meson/meson_drv.c | 118 +- drivers/gpu/drm/meson/meson_drv.h | 3 + drivers/gpu/drm/meson/meson_dw_hdmi.c | 919 ++++++++++++++ drivers/gpu/drm/meson/meson_dw_hdmi.h | 146 +++ drivers/gpu/drm/meson/meson_registers.h | 1 + drivers/gpu/drm/meson/meson_vclk.c | 632 +++++++++- drivers/gpu/drm/meson/meson_vclk.h | 6 +- drivers/gpu/drm/meson/meson_venc.c | 1254 +++++++++++++++++++- drivers/gpu/drm/meson/meson_venc.h | 7 + drivers/gpu/drm/meson/meson_venc_cvbs.c | 11 +- drivers/gpu/drm/meson/meson_viu.c | 6 +- drivers/gpu/drm/meson/meson_vpp.c | 8 +- drivers/gpu/drm/meson/meson_vpp.h | 2 + 30 files changed, 3466 insertions(+), 47 deletions(-) create mode 100644 Documentation/devicetree/bindings/display/amlogic,meson-dw-hdmi.txt create mode 100644 Documentation/gpu/meson.rst create mode 100644 drivers/gpu/drm/meson/meson_dw_hdmi.c create mode 100644 drivers/gpu/drm/meson/meson_dw_hdmi.h