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From: Bhaumik Bhatt <>
	Bhaumik Bhatt <>
Subject: [PATCH v4 1/8] bus: mhi: core: Allow sending the STOP channel command
Date: Thu,  3 Dec 2020 17:23:10 -0800	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

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 <>
 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 702c31b..a7bb8a7 100644
--- a/drivers/bus/mhi/core/main.c
+++ b/drivers/bus/mhi/core/main.c
@@ -1193,6 +1193,11 @@ 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);
+		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;
 		cmd_tre->ptr = MHI_TRE_CMD_START_PTR;
 		cmd_tre->dword[0] = MHI_TRE_CMD_START_DWORD0;
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a Linux Foundation Collaborative Project

  reply	other threads:[~2020-12-04  1:24 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-04  1:23 [PATCH v4 0/8] Updates to MHI channel handling Bhaumik Bhatt
2020-12-04  1:23 ` Bhaumik Bhatt [this message]
2020-12-04  3:44   ` [PATCH v4 1/8] bus: mhi: core: Allow sending the STOP channel command Hemant Kumar
2020-12-04  1:23 ` [PATCH v4 2/8] bus: mhi: core: Allow channel to be disabled from stopped state Bhaumik Bhatt
2020-12-04  1:23 ` [PATCH v4 3/8] bus: mhi: core: Improvements to the channel handling state machine Bhaumik Bhatt
2020-12-04  1:23 ` [PATCH v4 4/8] bus: mhi: core: Clear configuration from channel context during reset Bhaumik Bhatt
2020-12-04  3:49   ` Hemant Kumar
2020-12-04  1:23 ` [PATCH v4 5/8] bus: mhi: core: Add support to stop or start channel data transfers Bhaumik Bhatt
2020-12-04  3:50   ` Hemant Kumar
2020-12-04  1:23 ` [PATCH v4 6/8] bus: mhi: core: Check channel execution environment before issuing reset Bhaumik Bhatt
2020-12-04  1:23 ` [PATCH v4 7/8] bus: mhi: core: Remove __ prefix for MHI channel unprepare function Bhaumik Bhatt
2020-12-04  1:23 ` [PATCH v4 8/8] bus: mhi: Improve documentation on channel transfer setup APIs Bhaumik Bhatt

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