Re: [Qemu-devel] [PATCH V5 0/8] Xilinx DisplayPort.

[Alistair Francis <alistair.francis@xilinx.com>]

On Fri, Oct 16, 2015 at 6:41 AM,  <fred.konrad@greensocs.com> wrote:
> From: KONRAD Frederic <fred.konrad@greensocs.com>
>
> This is the fifth version of this patch-set of the implementation of the Xilinx
> DisplayPort and DPDMA.
>
> This fifth version moves some headers files to the right directory.
>
> Second patch introduces an AUX bus needed by the DP to read the DPCD.
> It's also possible to connect an I2C device on it to to I2C through AUX
> commands. The drivers requires I2C broadcast write to be modeled as well which
> seems to be missing currently upstream.
>
> The tree can be cloned at:
> git@git.greensocs.com:fkonrad/xilinx_dp.git branch xilinx_dp_v5_release

I can't seem to access this, is it public?

Thanks,

Alistair

>
> Details of the DPDMA part:
>  * DPDMA is implemented as a QEMU SYSBUS device.
>  * Interrupts are implemented except the axi error and fifo.
>
> Details of the XILINX-DP:
>  * DP is also implemented as a QEMU SYSBUS. Multiple memory regions are used to
>    avoid having a single big region as there are holes in the DP memory map.
>  * An aux-bus has been implemented, it creates a memory map for aux slaves and
>    has an i2c bus (which is already implemented in QEMU).
>  * The normal programmable i2c clock and controller implementation is missing
>    from the QEMU tree so the easiest way for us was to implement a dummy-clk
>    driver in the kernel. It's a clock which does nothing but fakes a clock such
>    that the DPDMA driver works. The patch will be send separately.
>  * The graphic plane works on channel 3, video on channel 0 and audios on
>    channel 4 and 5.
>
> Thanks,
> Fred
>
> V4 -> V5 changes:
>   * aux:
>     * Move the header include/hw => include/hw/misc
>   * dpcd:
>     * Move the header hw/display => include/hw/display
>   * i2c-ddc:
>     * Move the header hw/i2c => include/hw/i2c
>   * xlnx_dpdma:
>     * Move the header hw/dma => include/hw/dma
>     * Fix some styles issues.
>   * xlnx_dp:
>     * Move the header hw/display => include/hw/display
>   * globally:
>     * Rebased on current master (c49d3411faae8ffaab8f7e5db47405a008411c10).
>
> V3 -> V4 changes:
>   * xlnx_dpdma:
>     * Initialize operation_finished during reset.
>     * Add a function to trigger a VSYNC interrupt from the xlnx_dp.
>   * xlnx_dp:
>     * Fix the default pixman format for video buffer.
>     * Remove unused buffer.
>   * dpcd:
>     * Add the missing DPCD_LANE_X_STATUS.
>     * Set status field for all ports to avoid driver error.
>     * Use 4 lines by default.
>     * Use guest error in case of an outbound access.
>   * i2c broadcast:
>     * Use a list of device instead of relying on broadcast field to remove duped
>       code.
>   * other:
>     * rebased on current master (774ee4772b6838b78741ea52d4bf26b8922244c5)
>
> V2 -> V3 changes:
>   * dpcd:
>     * Add a CONFIG_DPCD.
>   * i2c-ddc:
>     * Fill in VMSD.
>   * aux:
>     * Remove address field.
>     * Add a CONFIG_AUX.
>   * dpdma:
>     * Fill in VMSD.
>     * Some coding style changes.
>   * dp:
>     * Fill in VMSD.
>     * Coding style changes.
>
> V1 -> V2 changes:
>   * xlnx-zynqmp:
>     * Remove the dummy object_property_add_child(..).
>   * dpcd:
>     * Compile only when the ZYNQMP platform is compiled.
>     * Use qemu_log instead of printf.
>     * Compile test debug traces.
>     * Remove the unused current_reg.
>     * Remove the blank realize.
>     * Use dpcd_ prefixes instead of aux_ prefixes.
>     * Add a reset callback.
>     * Add the VMSD.
>     * Add size constraint in the MemoryRegionOps structure instead of asserting.
>     * Style fixes.
>   * aux:
>     * Compile only when the ZYNQMP platform is compiled.
>     * Remove the class init and the class for aux-slave.
>   * dpdma:
>     * Compile only when the ZYNQMP platform is compiled.
>     * Unify per channel macro in one, simplify the switch case.
>     * Use extractXX.
>     * Make DPDMA_GBL an or'ed register.
>   * dp:
>     * Compile only when the ZYNQMP platform is compiled.
>     * Don't look at the audio channel count.
>     * Use a third pixman plane when we do blending.
>   * other:
>     * Drop the useless "console: add qemu_alloc_display_format." patch as
>       suggested by Gerd.
>     * Rebase on current master (f3e3b083d4c266ea864ae3c83da49d4086857679).
>
> KONRAD Frederic (7):
>   i2cbus: remove unused dev field
>   introduce aux-bus
>   i2c: implement broadcast write
>   introduce dpcd module
>   introduce xlnx-dpdma
>   introduce xlnx-dp
>   arm: xlnx-zynqmp: Add xlnx-dp and xlnx-dpdma
>
> Peter Maydell (1):
>   hw/i2c-ddc.c: Implement DDC I2C slave
>
>  default-configs/aarch64-softmmu.mak |    3 +
>  hw/arm/xlnx-zynqmp.c                |   20 +
>  hw/display/Makefile.objs            |    2 +
>  hw/display/dpcd.c                   |  171 +++++
>  hw/display/xlnx_dp.c                | 1370 +++++++++++++++++++++++++++++++++++
>  hw/dma/Makefile.objs                |    1 +
>  hw/dma/xlnx_dpdma.c                 |  788 ++++++++++++++++++++
>  hw/i2c/Makefile.objs                |    1 +
>  hw/i2c/core.c                       |  131 ++--
>  hw/i2c/i2c-ddc.c                    |  302 ++++++++
>  hw/misc/Makefile.objs               |    1 +
>  hw/misc/aux.c                       |  374 ++++++++++
>  include/hw/arm/xlnx-zynqmp.h        |    5 +
>  include/hw/display/dpcd.h           |  105 +++
>  include/hw/display/xlnx_dp.h        |  110 +++
>  include/hw/dma/xlnx_dpdma.h         |   85 +++
>  include/hw/i2c/i2c-ddc.h            |   36 +
>  include/hw/misc/aux.h               |  125 ++++
>  18 files changed, 3575 insertions(+), 55 deletions(-)
>  create mode 100644 hw/display/dpcd.c
>  create mode 100644 hw/display/xlnx_dp.c
>  create mode 100644 hw/dma/xlnx_dpdma.c
>  create mode 100644 hw/i2c/i2c-ddc.c
>  create mode 100644 hw/misc/aux.c
>  create mode 100644 include/hw/display/dpcd.h
>  create mode 100644 include/hw/display/xlnx_dp.h
>  create mode 100644 include/hw/dma/xlnx_dpdma.h
>  create mode 100644 include/hw/i2c/i2c-ddc.h
>  create mode 100644 include/hw/misc/aux.h
>
> --
> 1.9.0
>
>