* Re: [PATCH v2 1/2] bus: mhi: Remove auto-start option
[not found] <1600674184-3537-1-git-send-email-loic.poulain@linaro.org>
@ 2020-11-16 5:21 ` Manivannan Sadhasivam
[not found] ` <1600674184-3537-2-git-send-email-loic.poulain@linaro.org>
1 sibling, 0 replies; 2+ messages in thread
From: Manivannan Sadhasivam @ 2020-11-16 5:21 UTC (permalink / raw)
To: Loic Poulain
Cc: davem, linux-arm-msm, bjorn.andersson, netdev, hemantk, ath11k
+ath11k list
On Mon, Sep 21, 2020 at 09:43:03AM +0200, Loic Poulain wrote:
> There is really no point having an auto-start for channels.
> This is confusing for the device drivers, some have to enable the
> channels, others don't have... and waste resources (e.g. pre allocated
> buffers) that may never be used.
>
> This is really up to the MHI device(channel) driver to manage the state
> of its channels.
>
> Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Applied to mhi-ath11k-immutable branch! This branch will get merged into
mhi-next and ath-next.
Thanks,
Mani
> ---
> v2: split MHI and qrtr changes in dedicated commits
>
> drivers/bus/mhi/core/init.c | 9 ---------
> drivers/bus/mhi/core/internal.h | 1 -
> include/linux/mhi.h | 2 --
> 3 files changed, 12 deletions(-)
>
> diff --git a/drivers/bus/mhi/core/init.c b/drivers/bus/mhi/core/init.c
> index dccc824..8798deb 100644
> --- a/drivers/bus/mhi/core/init.c
> +++ b/drivers/bus/mhi/core/init.c
> @@ -721,7 +721,6 @@ static int parse_ch_cfg(struct mhi_controller *mhi_cntrl,
> mhi_chan->offload_ch = ch_cfg->offload_channel;
> mhi_chan->db_cfg.reset_req = ch_cfg->doorbell_mode_switch;
> mhi_chan->pre_alloc = ch_cfg->auto_queue;
> - mhi_chan->auto_start = ch_cfg->auto_start;
>
> /*
> * If MHI host allocates buffers, then the channel direction
> @@ -1119,11 +1118,6 @@ static int mhi_driver_probe(struct device *dev)
> goto exit_probe;
>
> ul_chan->xfer_cb = mhi_drv->ul_xfer_cb;
> - if (ul_chan->auto_start) {
> - ret = mhi_prepare_channel(mhi_cntrl, ul_chan);
> - if (ret)
> - goto exit_probe;
> - }
> }
>
> ret = -EINVAL;
> @@ -1157,9 +1151,6 @@ static int mhi_driver_probe(struct device *dev)
> if (ret)
> goto exit_probe;
>
> - if (dl_chan && dl_chan->auto_start)
> - mhi_prepare_channel(mhi_cntrl, dl_chan);
> -
> mhi_device_put(mhi_dev);
>
> return ret;
> diff --git a/drivers/bus/mhi/core/internal.h b/drivers/bus/mhi/core/internal.h
> index 5a81a42..73b52a0 100644
> --- a/drivers/bus/mhi/core/internal.h
> +++ b/drivers/bus/mhi/core/internal.h
> @@ -563,7 +563,6 @@ struct mhi_chan {
> bool configured;
> bool offload_ch;
> bool pre_alloc;
> - bool auto_start;
> bool wake_capable;
> };
>
> diff --git a/include/linux/mhi.h b/include/linux/mhi.h
> index 811e686..0d277c7 100644
> --- a/include/linux/mhi.h
> +++ b/include/linux/mhi.h
> @@ -214,7 +214,6 @@ enum mhi_db_brst_mode {
> * @offload_channel: The client manages the channel completely
> * @doorbell_mode_switch: Channel switches to doorbell mode on M0 transition
> * @auto_queue: Framework will automatically queue buffers for DL traffic
> - * @auto_start: Automatically start (open) this channel
> * @wake-capable: Channel capable of waking up the system
> */
> struct mhi_channel_config {
> @@ -232,7 +231,6 @@ struct mhi_channel_config {
> bool offload_channel;
> bool doorbell_mode_switch;
> bool auto_queue;
> - bool auto_start;
> bool wake_capable;
> };
>
> --
> 2.7.4
>
--
ath11k mailing list
ath11k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath11k
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH v2 2/2] net: qrtr: Start MHI channels during init
[not found] ` <1600674184-3537-2-git-send-email-loic.poulain@linaro.org>
@ 2020-11-16 5:22 ` Manivannan Sadhasivam
0 siblings, 0 replies; 2+ messages in thread
From: Manivannan Sadhasivam @ 2020-11-16 5:22 UTC (permalink / raw)
To: Loic Poulain
Cc: davem, linux-arm-msm, bjorn.andersson, netdev, hemantk, ath11k
+ath11k list
On Mon, Sep 21, 2020 at 09:43:04AM +0200, Loic Poulain wrote:
> Start MHI device channels so that transfers can be performed.
> The MHI stack does not auto-start channels anymore.
>
> Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Applied to mhi-ath11k-immutable branch! This branch will get merged into
mhi-next and ath-next.
Thanks,
Mani
> ---
> v2: split MHI and qrtr changes in dedicated commits
>
> net/qrtr/mhi.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/net/qrtr/mhi.c b/net/qrtr/mhi.c
> index ff0c414..7100f0b 100644
> --- a/net/qrtr/mhi.c
> +++ b/net/qrtr/mhi.c
> @@ -76,6 +76,11 @@ static int qcom_mhi_qrtr_probe(struct mhi_device *mhi_dev,
> struct qrtr_mhi_dev *qdev;
> int rc;
>
> + /* start channels */
> + rc = mhi_prepare_for_transfer(mhi_dev);
> + if (rc)
> + return rc;
> +
> qdev = devm_kzalloc(&mhi_dev->dev, sizeof(*qdev), GFP_KERNEL);
> if (!qdev)
> return -ENOMEM;
> --
> 2.7.4
>
--
ath11k mailing list
ath11k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath11k
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2020-11-16 5:22 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
[not found] <1600674184-3537-1-git-send-email-loic.poulain@linaro.org>
2020-11-16 5:21 ` [PATCH v2 1/2] bus: mhi: Remove auto-start option Manivannan Sadhasivam
[not found] ` <1600674184-3537-2-git-send-email-loic.poulain@linaro.org>
2020-11-16 5:22 ` [PATCH v2 2/2] net: qrtr: Start MHI channels during init Manivannan Sadhasivam
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).