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bus: mhi: core: Allow sending the STOP channel command

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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>
Link: https://lore.kernel.org/r/1617311778-1254-2-git-send-email-bbhatt@codeaurora.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
This commit is contained in:
Bhaumik Bhatt 2021-04-01 14:16:10 -07:00 committed by Manivannan Sadhasivam
parent 49d38ebb6f
commit 5a62e39b45
1 changed files with 5 additions and 0 deletions
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5
drivers/bus/mhi/core/main.c
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@ -1216,6 +1216,11 @@ 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;