[PATCH v2] mailbox: zynqmp-ipi: Make polling period configurable
Michal Simek
michal.simek at amd.com
Thu Jul 18 22:06:44 PDT 2024
On 7/18/24 22:40, Ben Levinsky wrote:
> There are cases where remote that is acking mailbox message can take longer
> than the default tx_poll_period value. Therefore, enable this to be mutable.
>
> Added tx_poll_period field while inserting the module to set the
> poll period for ack after sending mailbox message.
>
> Signed-off-by: Ben Levinsky <ben.levinsky at amd.com>
> ---
> v2: Made param a module_param_named mutable arg as opposed to compiled option
> ---
> drivers/mailbox/zynqmp-ipi-mailbox.c | 9 ++++++++-
> 1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/mailbox/zynqmp-ipi-mailbox.c b/drivers/mailbox/zynqmp-ipi-mailbox.c
> index 4acf5612487c..521d08b9ab47 100644
> --- a/drivers/mailbox/zynqmp-ipi-mailbox.c
> +++ b/drivers/mailbox/zynqmp-ipi-mailbox.c
> @@ -64,6 +64,13 @@
>
> #define MAX_SGI 16
>
> +/*
> + * Module parameters
> + */
> +static int tx_poll_period = 5;
> +module_param_named(tx_poll_period, tx_poll_period, int, 0644);
> +MODULE_PARM_DESC(tx_poll_period, "Poll period waiting for ack after send.");
> +
> /**
> * struct zynqmp_ipi_mchan - Description of a Xilinx ZynqMP IPI mailbox channel
> * @is_opened: indicate if the IPI channel is opened
> @@ -537,7 +544,7 @@ static int zynqmp_ipi_mbox_probe(struct zynqmp_ipi_mbox *ipi_mbox,
> mbox->num_chans = 2;
> mbox->txdone_irq = false;
> mbox->txdone_poll = true;
> - mbox->txpoll_period = 5;
> + mbox->txpoll_period = tx_poll_period;
> mbox->of_xlate = zynqmp_ipi_of_xlate;
> chans = devm_kzalloc(mdev, 2 * sizeof(*chans), GFP_KERNEL);
> if (!chans)
Acked-by: Michal Simek <michal.simek at amd.com>
Thanks,
Michal
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