在 2025/3/3 18:51, Sudeep Holla 写道:
In order to add support of mapping the generic communication shared
memory region in the PCC mailbox driver when the PCC channel is requested,
we need to move pcc_mbox_ioremap() before pcc_mbox_request_channel().
This patch is supposed to merge into patch 8/14 because it depend on
this moving.
No functional change.
Signed-off-by: Sudeep Holla <sudeep.holla@xxxxxxx>
---
drivers/mailbox/pcc.c | 38 +++++++++++++++++++-------------------
1 file changed, 19 insertions(+), 19 deletions(-)
diff --git a/drivers/mailbox/pcc.c b/drivers/mailbox/pcc.c
index e693675ce1fbd8d01d0640b3053a5c1882bdbce7..f230e512c29b79fc03e429145180ff049a250d2d 100644
--- a/drivers/mailbox/pcc.c
+++ b/drivers/mailbox/pcc.c
@@ -357,6 +357,25 @@ static irqreturn_t pcc_mbox_irq(int irq, void *p)
return IRQ_HANDLED;
}
+int pcc_mbox_ioremap(struct mbox_chan *chan)
+{
+ struct pcc_chan_info *pchan_info;
+ struct pcc_mbox_chan *pcc_mbox_chan;
+
+ if (!chan || !chan->cl)
+ return -1;
+ pchan_info = chan->con_priv;
+ pcc_mbox_chan = &pchan_info->chan;
+
+ pcc_mbox_chan->shmem = acpi_os_ioremap(pcc_mbox_chan->shmem_base_addr,
+ pcc_mbox_chan->shmem_size);
+ if (!pcc_mbox_chan->shmem)
+ return -ENXIO;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(pcc_mbox_ioremap);
+
/**
* pcc_mbox_request_channel - PCC clients call this function to
* request a pointer to their PCC subspace, from which they
@@ -419,25 +438,6 @@ void pcc_mbox_free_channel(struct pcc_mbox_chan *pchan)
}
EXPORT_SYMBOL_GPL(pcc_mbox_free_channel);
-int pcc_mbox_ioremap(struct mbox_chan *chan)
-{
- struct pcc_chan_info *pchan_info;
- struct pcc_mbox_chan *pcc_mbox_chan;
-
- if (!chan || !chan->cl)
- return -1;
- pchan_info = chan->con_priv;
- pcc_mbox_chan = &pchan_info->chan;
-
- pcc_mbox_chan->shmem = acpi_os_ioremap(pcc_mbox_chan->shmem_base_addr,
- pcc_mbox_chan->shmem_size);
- if (!pcc_mbox_chan->shmem)
- return -ENXIO;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(pcc_mbox_ioremap);
-
/**
* pcc_send_data - Called from Mailbox Controller code. Used
* here only to ring the channel doorbell. The PCC client
