Add support to receive the response to a STOP channel command to the MHI bus. If a client would like to STOP a channel instead of issuing a RESET to it, this would provide support for it. Signed-off-by: Bhaumik Bhatt <bbhatt@xxxxxxxxxxxxxx> --- drivers/bus/mhi/core/init.c | 5 +++-- drivers/bus/mhi/core/main.c | 5 +++++ 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/bus/mhi/core/init.c b/drivers/bus/mhi/core/init.c index 8cefa35..4d34d62 100644 --- a/drivers/bus/mhi/core/init.c +++ b/drivers/bus/mhi/core/init.c @@ -1267,8 +1267,9 @@ static int mhi_driver_remove(struct device *dev) mutex_lock(&mhi_chan->mutex); - if (ch_state[dir] == MHI_CH_STATE_ENABLED && - !mhi_chan->offload_ch) + if ((ch_state[dir] == MHI_CH_STATE_ENABLED || + ch_state[dir] == MHI_CH_STATE_STOP) && + !mhi_chan->offload_ch) mhi_deinit_chan_ctxt(mhi_cntrl, mhi_chan); mhi_chan->ch_state = MHI_CH_STATE_DISABLED; diff --git a/drivers/bus/mhi/core/main.c b/drivers/bus/mhi/core/main.c index f953e2a..ad881a1 100644 --- a/drivers/bus/mhi/core/main.c +++ b/drivers/bus/mhi/core/main.c @@ -1194,6 +1194,11 @@ 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
