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From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
To: gregkh@linuxfoundation.org
Cc: hemantk@codeaurora.org, bbhatt@codeaurora.org,
	linux-arm-msm@vger.kernel.org, jhugo@codeaurora.org,
	linux-kernel@vger.kernel.org,
	Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Subject: [PATCH v3 07/19] bus: mhi: core: Introduce helper function to check device state
Date: Tue, 29 Sep 2020 23:22:06 +0530	[thread overview]
Message-ID: <20200929175218.8178-8-manivannan.sadhasivam@linaro.org> (raw)
In-Reply-To: <20200929175218.8178-1-manivannan.sadhasivam@linaro.org>

From: Bhaumik Bhatt <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>
Signed-off-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 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)
 {
-- 
2.17.1


  parent reply	other threads:[~2020-09-29 17:53 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-29 17:51 [PATCH v3 00/19] MHI changes for v5.10 Manivannan Sadhasivam
2020-09-29 17:52 ` [PATCH v3 01/19] bus: mhi: fix doubled words and struct image_info kernel-doc Manivannan Sadhasivam
2020-09-29 17:52 ` [PATCH v3 02/19] bus: mhi: core: Remove double occurrence for mhi_ctrl_ev_task() declaration Manivannan Sadhasivam
2020-09-29 17:52 ` [PATCH v3 03/19] bus: mhi: core: Abort suspends due to outgoing pending packets Manivannan Sadhasivam
2020-09-29 17:52 ` [PATCH v3 04/19] bus: mhi: core: Use helper API to trigger a non-blocking host resume Manivannan Sadhasivam
2020-09-29 17:52 ` [PATCH v3 05/19] bus: mhi: core: Trigger host resume if suspended during mhi_device_get() Manivannan Sadhasivam
2020-09-29 17:52 ` [PATCH v3 06/19] bus: mhi: core: Use generic name field for an MHI device Manivannan Sadhasivam
2020-09-29 17:52 ` Manivannan Sadhasivam [this message]
2020-09-29 17:52 ` [PATCH v3 08/19] bus: mhi: core: Introduce counters to track MHI device state transitions Manivannan Sadhasivam
2020-09-29 17:52 ` [PATCH v3 09/19] bus: mhi: core: Read and save device hardware information from BHI Manivannan Sadhasivam
2020-09-29 17:52 ` [PATCH v3 10/19] bus: mhi: core: Introduce APIs to allocate and free the MHI controller Manivannan Sadhasivam
2020-09-29 17:52 ` [PATCH v3 11/19] bus: mhi: core: Add const qualifier to MHI config information Manivannan Sadhasivam
2020-09-29 17:52 ` [PATCH v3 12/19] bus: mhi: Remove include of rwlock_types.h Manivannan Sadhasivam
2020-09-29 17:52 ` [PATCH v3 13/19] bus: mhi: Fix entries based on Kconfig coding style Manivannan Sadhasivam
2020-09-29 17:52 ` [PATCH v3 14/19] bus: mhi: core: Introduce debugfs entries for MHI Manivannan Sadhasivam
2020-09-29 17:52 ` [PATCH v3 15/19] bus: mhi: core: Introduce sysfs " Manivannan Sadhasivam
2020-09-29 17:52 ` [PATCH v3 16/19] bus: mhi: core: Allow shared IRQ for event rings Manivannan Sadhasivam
2020-09-29 17:52 ` [PATCH v3 17/19] bus: mhi: Remove unused nr_irqs_req variable Manivannan Sadhasivam
2020-09-29 17:52 ` [PATCH v3 18/19] bus: mhi: core: Fix the building of MHI module Manivannan Sadhasivam
2020-09-29 17:52 ` [PATCH v3 19/19] bus: mhi: debugfs: Print channel context read-pointer Manivannan Sadhasivam

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