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,
loic.poulain@linaro.org, Bhaumik Bhatt <bbhatt@codeaurora.org>
Subject: [RESEND PATCH v4 1/8] bus: mhi: core: Allow sending the STOP channel command
Date: Fri, 8 Jan 2021 12:39:49 -0800 [thread overview]
Message-ID: <1610138396-25811-2-git-send-email-bbhatt@codeaurora.org> (raw)
In-Reply-To: <1610138396-25811-1-git-send-email-bbhatt@codeaurora.org>
Add support to allow sending the STOP channel command. If a
client driver would like to STOP a channel and have the device
retain the channel context instead of issuing a RESET to it and
clearing the context, this would provide support for it after
the ability to send this command is exposed to clients.
Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
---
drivers/bus/mhi/core/main.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/bus/mhi/core/main.c b/drivers/bus/mhi/core/main.c
index 8576b0f..c22d7df 100644
--- a/drivers/bus/mhi/core/main.c
+++ b/drivers/bus/mhi/core/main.c
@@ -1224,6 +1224,11 @@ int mhi_send_cmd(struct mhi_controller *mhi_cntrl,
cmd_tre->dword[0] = MHI_TRE_CMD_RESET_DWORD0;
cmd_tre->dword[1] = MHI_TRE_CMD_RESET_DWORD1(chan);
break;
+ case MHI_CMD_STOP_CHAN:
+ cmd_tre->ptr = MHI_TRE_CMD_STOP_PTR;
+ cmd_tre->dword[0] = MHI_TRE_CMD_STOP_DWORD0;
+ cmd_tre->dword[1] = MHI_TRE_CMD_STOP_DWORD1(chan);
+ break;
case MHI_CMD_START_CHAN:
cmd_tre->ptr = MHI_TRE_CMD_START_PTR;
cmd_tre->dword[0] = MHI_TRE_CMD_START_DWORD0;
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2021-01-08 20:41 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-08 20:39 [RESEND PATCH v4 0/8] Updates to MHI channel handling Bhaumik Bhatt
2021-01-08 20:39 ` Bhaumik Bhatt [this message]
2021-01-08 20:39 ` [RESEND PATCH v4 2/8] bus: mhi: core: Allow channel to be disabled from stopped state Bhaumik Bhatt
2021-01-08 20:39 ` [RESEND PATCH v4 3/8] bus: mhi: core: Improvements to the channel handling state machine Bhaumik Bhatt
2021-01-08 20:39 ` [RESEND PATCH v4 4/8] bus: mhi: core: Clear configuration from channel context during reset Bhaumik Bhatt
2021-01-08 20:39 ` [RESEND PATCH v4 5/8] bus: mhi: core: Add support to stop or start channel data transfers Bhaumik Bhatt
2021-01-08 20:39 ` [RESEND PATCH v4 6/8] bus: mhi: core: Check channel execution environment before issuing reset Bhaumik Bhatt
2021-01-08 20:39 ` [RESEND PATCH v4 7/8] bus: mhi: core: Remove __ prefix for MHI channel unprepare function Bhaumik Bhatt
2021-01-08 20:39 ` [RESEND PATCH v4 8/8] bus: mhi: Improve documentation on channel transfer setup APIs Bhaumik Bhatt
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