Commit a6c1fff8 authored by Bhaumik Bhatt's avatar Bhaumik Bhatt Committed by Greg Kroah-Hartman
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bus: mhi: core: Introduce helper function to check device state 



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.

Reviewed-by: default avatarJeffrey Hugo <jhugo@codeaurora.org>
Reviewed-by: default avatarManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: default avatarBhaumik Bhatt <bbhatt@codeaurora.org>
Signed-off-by: default avatarManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20200929175218.8178-8-manivannan.sadhasivam@linaro.org


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 5aa93f05

drivers/bus/mhi/core/internal.h

+5 −0
Original line number Diff line number Diff line
@@ -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)

{