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    Subject[PATCH v11 03/11] firmware: xilinx: Add zynqmp IOCTL API for device control
    Date
    From: Rajan Vaja <rajanv@xilinx.com>

    Add ZynqMP firmware IOCTL API to control and configure
    devices like PLLs, SD, Gem, etc.

    Signed-off-by: Rajan Vaja <rajanv@xilinx.com>
    Signed-off-by: Jolly Shah <jollys@xilinx.com>
    ---
    drivers/firmware/xilinx/zynqmp.c | 20 ++++++++++++++++++++
    include/linux/firmware/xlnx-zynqmp.h | 2 ++
    2 files changed, 22 insertions(+)

    diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
    index edbb84e..24cfd9e 100644
    --- a/drivers/firmware/xilinx/zynqmp.c
    +++ b/drivers/firmware/xilinx/zynqmp.c
    @@ -241,8 +241,28 @@ static int get_set_conduit_method(struct device_node *np)
    return 0;
    }

    +/**
    + * zynqmp_pm_ioctl() - PM IOCTL API for device control and configs
    + * @node_id: Node ID of the device
    + * @ioctl_id: ID of the requested IOCTL
    + * @arg1: Argument 1 to requested IOCTL call
    + * @arg2: Argument 2 to requested IOCTL call
    + * @out: Returned output value
    + *
    + * This function calls IOCTL to firmware for device control and configuration.
    + *
    + * Return: Returns status, either success or error+reason
    + */
    +static int zynqmp_pm_ioctl(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2,
    + u32 *out)
    +{
    + return zynqmp_pm_invoke_fn(PM_IOCTL, node_id, ioctl_id,
    + arg1, arg2, out);
    +}
    +
    static const struct zynqmp_eemi_ops eemi_ops = {
    .get_api_version = zynqmp_pm_get_api_version,
    + .ioctl = zynqmp_pm_ioctl,
    };

    /**
    diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
    index cb63bed..2eec6e7 100644
    --- a/include/linux/firmware/xlnx-zynqmp.h
    +++ b/include/linux/firmware/xlnx-zynqmp.h
    @@ -34,6 +34,7 @@

    enum pm_api_id {
    PM_GET_API_VERSION = 1,
    + PM_IOCTL = 34,
    };

    /* PMU-FW return status codes */
    @@ -49,6 +50,7 @@ enum pm_ret_status {

    struct zynqmp_eemi_ops {
    int (*get_api_version)(u32 *version);
    + int (*ioctl)(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2, u32 *out);
    };

    #if IS_REACHABLE(CONFIG_ARCH_ZYNQMP)
    --
    2.7.4
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