ACPI / CPPC: Support PCC with interrupt flag

For PCC mailbox with interrupt flag, CPPC should call mbox_chan_txdone()
function to notify the mailbox framework about TX completion.

Signed-off-by: Hoan Tran <hotran@apm.com>
Reviewed-by: Prashanth Prakash <pprakash@codeaurora.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
index 3d1ae6d37178..d0d0504b7c89 100644
--- a/drivers/acpi/cppc_acpi.c
+++ b/drivers/acpi/cppc_acpi.c
@@ -311,7 +311,10 @@ static int send_pcc_cmd(u16 cmd)
         if (pcc_data.pcc_mrtt)
                 last_cmd_cmpl_time = ktime_get();
 
-        mbox_client_txdone(pcc_data.pcc_channel, ret);
+        if (pcc_data.pcc_channel->mbox->txdone_irq)
+                mbox_chan_txdone(pcc_data.pcc_channel, ret);
+        else
+                mbox_client_txdone(pcc_data.pcc_channel, ret);
 
 end:
         if (cmd == CMD_WRITE) {