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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,
	carl.yin@quectel.com, naveen.kumar@quectel.com,
	loic.poulain@linaro.org, Bhaumik Bhatt <bbhatt@codeaurora.org>
Subject: [PATCH v8 1/9] bus: mhi: core: Allow sending the STOP channel command
Date: Thu,  1 Apr 2021 14:16:10 -0700	[thread overview]
Message-ID: <1617311778-1254-2-git-send-email-bbhatt@codeaurora.org> (raw)
In-Reply-To: <1617311778-1254-1-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>
Reviewed-by: Hemant Kumar <hemantk@codeaurora.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.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 58b8111..8c510f1 100644
--- a/drivers/bus/mhi/core/main.c
+++ b/drivers/bus/mhi/core/main.c
@@ -1208,6 +1208,11 @@ 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


  reply	other threads:[~2021-04-01 21:16 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-01 21:16 Bhaumik Bhatt
2021-04-01 21:16 ` Bhaumik Bhatt [this message]
2021-05-04 17:40   ` [PATCH v8 1/9] bus: mhi: core: Allow sending the STOP channel command Jeffrey Hugo
2021-05-26 19:03   ` patchwork-bot+linux-arm-msm
2021-04-01 21:16 ` [PATCH v8 2/9] bus: mhi: core: Clear context for stopped channels from remove() Bhaumik Bhatt
2021-05-04 17:41   ` Jeffrey Hugo
2021-04-01 21:16 ` [PATCH v8 3/9] bus: mhi: core: Improvements to the channel handling state machine Bhaumik Bhatt
2021-04-07  6:26   ` Manivannan Sadhasivam
2021-05-04 17:43   ` Jeffrey Hugo
2021-04-01 21:16 ` [PATCH v8 4/9] bus: mhi: core: Update debug messages to use client device Bhaumik Bhatt
2021-04-07  6:27   ` Manivannan Sadhasivam
2021-05-04 17:45   ` Jeffrey Hugo
2021-04-01 21:16 ` [PATCH v8 5/9] bus: mhi: core: Hold device wake for channel update commands Bhaumik Bhatt
2021-04-07  6:31   ` Manivannan Sadhasivam
2021-05-04 17:46   ` Jeffrey Hugo
2021-04-01 21:16 ` [PATCH v8 6/9] bus: mhi: core: Clear configuration from channel context during reset Bhaumik Bhatt
2021-05-04 17:48   ` Jeffrey Hugo
2021-04-01 21:16 ` [PATCH v8 7/9] bus: mhi: core: Check channel execution environment before issuing reset Bhaumik Bhatt
2021-05-04 17:49   ` Jeffrey Hugo
2021-04-01 21:16 ` [PATCH v8 8/9] bus: mhi: core: Remove __ prefix for MHI channel unprepare function Bhaumik Bhatt
2021-05-04 17:50   ` Jeffrey Hugo
2021-04-01 21:16 ` [PATCH v8 9/9] bus: mhi: Improve documentation on channel transfer setup APIs Bhaumik Bhatt
2021-05-04 17:51   ` Jeffrey Hugo
2021-04-07  6:56 ` your mail Manivannan Sadhasivam

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