Messages in this thread Patch in this message | | | From | Bhaumik Bhatt <> | Subject | [PATCH v5 06/10] bus: mhi: core: Introduce helper function to check device state | Date | Thu, 23 Jul 2020 15:36:38 -0700 |
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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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