From: Bhaumik Bhatt <bbhatt@codeaurora.org>
To: manivannan.sadhasivam@linaro.org
Cc: linux-arm-msm@vger.kernel.org, hemantk@codeaurora.org,
jhugo@codeaurora.org, linux-kernel@vger.kernel.org,
Bhaumik Bhatt <bbhatt@codeaurora.org>
Subject: [PATCH v6 06/11] bus: mhi: core: Introduce helper function to check device state
Date: Mon, 27 Jul 2020 19:02:15 -0700 [thread overview]
Message-ID: <1595901740-27379-7-git-send-email-bbhatt@codeaurora.org> (raw)
In-Reply-To: <1595901740-27379-1-git-send-email-bbhatt@codeaurora.org>
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
next prev parent reply other threads:[~2020-07-28 2:03 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-28 2:02 [PATCH v6 00/11] Introduce features and debugfs/sysfs entries for MHI Bhaumik Bhatt
2020-07-28 2:02 ` [PATCH v6 01/11] bus: mhi: core: Remove double occurrence for mhi_ctrl_ev_task() declaration Bhaumik Bhatt
2020-07-28 2:02 ` [PATCH v6 02/11] bus: mhi: core: Abort suspends due to outgoing pending packets Bhaumik Bhatt
2020-07-28 2:02 ` [PATCH v6 03/11] bus: mhi: core: Use helper API to trigger a non-blocking host resume Bhaumik Bhatt
2020-07-28 2:02 ` [PATCH v6 04/11] bus: mhi: core: Trigger host resume if suspended during mhi_device_get() Bhaumik Bhatt
2020-07-28 2:02 ` [PATCH v6 05/11] bus: mhi: core: Use generic name field for an MHI device Bhaumik Bhatt
2020-07-28 2:02 ` Bhaumik Bhatt [this message]
2020-07-28 2:02 ` [PATCH v6 07/11] bus: mhi: core: Introduce counters to track MHI device state transitions Bhaumik Bhatt
2020-08-07 5:13 ` Manivannan Sadhasivam
2020-07-28 2:02 ` [PATCH v6 08/11] bus: mhi: core: Introduce debugfs entries for MHI Bhaumik Bhatt
2020-08-01 7:08 ` kernel test robot
2020-07-28 2:02 ` [PATCH v6 09/11] bus: mhi: core: Read and save device hardware information from BHI Bhaumik Bhatt
2020-07-28 2:02 ` [PATCH v6 10/11] bus: mhi: core: Introduce APIs to allocate and free the MHI controller Bhaumik Bhatt
2020-08-07 5:15 ` Manivannan Sadhasivam
2020-07-28 2:02 ` [PATCH v6 11/11] bus: mhi: core: Introduce sysfs entries for MHI Bhaumik Bhatt
2020-08-07 5:22 ` Manivannan Sadhasivam
2020-08-10 19:11 ` bbhatt
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