diff options
| author | Bhaumik Bhatt <bbhatt@codeaurora.org> | 2020-09-29 23:22:06 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-02 11:33:47 +0200 |
| commit | a6c1fff8571ae117be7ae2e7abff006924aca9ac (patch) | |
| tree | 7cc23e9aa01532f7bbaf3a53c7ee0523adffb705 /drivers/bus | |
| parent | 5aa93f0576b4e7be60ffcccb674470c59789fd1b (diff) | |
| download | linux-a6c1fff8571ae117be7ae2e7abff006924aca9ac.tar.bz2 | |
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: Jeffrey Hugo <jhugo@codeaurora.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20200929175218.8178-8-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/bus')
| -rw-r--r-- | drivers/bus/mhi/core/internal.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/bus/mhi/core/internal.h b/drivers/bus/mhi/core/internal.h index 1bbd6e99d38d..5a81a428c4aa 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) { |