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    Subject[PATCH v5 06/10] bus: mhi: core: Introduce helper function to check device state
    Date
    Introduce a helper function to determine whether the device is in a
    powered ON state and resides in one of the active MHI states. This will
    allow for some use cases where access can be pre-determined.

    Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
    Reviewed-by: Jeffrey Hugo <jhugo@codeaurora.org>
    Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
    ---
    drivers/bus/mhi/core/internal.h | 5 +++++
    1 file changed, 5 insertions(+)

    diff --git a/drivers/bus/mhi/core/internal.h b/drivers/bus/mhi/core/internal.h
    index 1bbd6e9..5a81a42 100644
    --- a/drivers/bus/mhi/core/internal.h
    +++ b/drivers/bus/mhi/core/internal.h
    @@ -598,6 +598,11 @@ int mhi_pm_m3_transition(struct mhi_controller *mhi_cntrl);
    int __mhi_device_get_sync(struct mhi_controller *mhi_cntrl);
    int mhi_send_cmd(struct mhi_controller *mhi_cntrl, struct mhi_chan *mhi_chan,
    enum mhi_cmd_type cmd);
    +static inline bool mhi_is_active(struct mhi_controller *mhi_cntrl)
    +{
    + return (mhi_cntrl->dev_state >= MHI_STATE_M0 &&
    + mhi_cntrl->dev_state <= MHI_STATE_M3_FAST);
    +}

    static inline void mhi_trigger_resume(struct mhi_controller *mhi_cntrl)
    {
    --
    The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
    a Linux Foundation Collaborative Project
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