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firmware: arm_scmi: Make smc support sync_cmds_completed_on_ret 

Enable sync_cmds_completed_on_ret in the SMC transport descriptor and
remove SMC specific .poll_done callback support since polling is bypassed
when sync_cmds_completed_on_ret is set.

Link: https://lore.kernel.org/r/20211220195646.44498-5-cristian.marussi@arm.com
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Cristian Marussi 2021-12-20 19:56:39 +00:00 committed by Sudeep Holla
parent 31d2f803c1
commit 117542b81f
1 changed files with 9 additions and 9 deletions
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18
drivers/firmware/arm_scmi/smc.c
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@ -173,14 +173,6 @@ static void smc_mark_txdone(struct scmi_chan_info *cinfo, int ret)
mutex_unlock(&scmi_info->shmem_lock);
}
static bool
smc_poll_done(struct scmi_chan_info *cinfo, struct scmi_xfer *xfer)
{
struct scmi_smc *scmi_info = cinfo->transport_info;
return shmem_poll_done(scmi_info->shmem, xfer);
}
static const struct scmi_transport_ops scmi_smc_ops = {
.chan_available = smc_chan_available,
.chan_setup = smc_chan_setup,
@ -188,7 +180,6 @@ static const struct scmi_transport_ops scmi_smc_ops = {
.send_message = smc_send_message,
.mark_txdone = smc_mark_txdone,
.fetch_response = smc_fetch_response,
.poll_done = smc_poll_done,
};
const struct scmi_desc scmi_smc_desc = {
@ -196,4 +187,13 @@ const struct scmi_desc scmi_smc_desc = {
.max_rx_timeout_ms = 30,
.max_msg = 20,
.max_msg_size = 128,
/*
* Setting .sync_cmds_atomic_replies to true for SMC assumes that,
* once the SMC instruction has completed successfully, the issued
* SCMI command would have been already fully processed by the SCMI
* platform firmware and so any possible response value expected
* for the issued command will be immmediately ready to be fetched
* from the shared memory area.
*/
.sync_cmds_completed_on_ret = true,
};