remoteproc: imx_rproc: Allow setting of the mailbox transmit mode

Current mailbox is blocking by default, but there are cases where we don't
need to wait for a response.

Linux just needs to send data to the remote processor, so let's
allow tx_block mode to be set (true/false) depending on usecase.

No functional changes.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Link: https://lore.kernel.org/r/20240822-imx_rproc-v3-1-6d943723945d@nxp.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>

diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c
index 9744b004bd77f019080e768aa1a5cdb2237a7ef8..22677f581067e01bbd47ab8493914089ce61a650 100644 (file)
--- a/drivers/remoteproc/imx_rproc.c
+++ b/drivers/remoteproc/imx_rproc.c
@@ -90,7 +90,7 @@ struct imx_rproc_mem {
 #define ATT_CORE_MASK   0xffff
 #define ATT_CORE(I)     BIT((I))
 
-static int imx_rproc_xtr_mbox_init(struct rproc *rproc);
+static int imx_rproc_xtr_mbox_init(struct rproc *rproc, bool tx_block);
 static void imx_rproc_free_mbox(struct rproc *rproc);
 
 struct imx_rproc {
@@ -369,7 +369,7 @@ static int imx_rproc_start(struct rproc *rproc)
        struct arm_smccc_res res;
        int ret;
 
-       ret = imx_rproc_xtr_mbox_init(rproc);
+       ret = imx_rproc_xtr_mbox_init(rproc, true);
        if (ret)
                return ret;
 
@@ -629,7 +629,7 @@ static void imx_rproc_kick(struct rproc *rproc, int vqid)
 
 static int imx_rproc_attach(struct rproc *rproc)
 {
-       return imx_rproc_xtr_mbox_init(rproc);
+       return imx_rproc_xtr_mbox_init(rproc, true);
 }
 
 static int imx_rproc_detach(struct rproc *rproc)
@@ -794,7 +794,7 @@ static void imx_rproc_rx_callback(struct mbox_client *cl, void *msg)
        queue_work(priv->workqueue, &priv->rproc_work);
 }
 
-static int imx_rproc_xtr_mbox_init(struct rproc *rproc)
+static int imx_rproc_xtr_mbox_init(struct rproc *rproc, bool tx_block)
 {
        struct imx_rproc *priv = rproc->priv;
        struct device *dev = priv->dev;
@@ -817,7 +817,7 @@ static int imx_rproc_xtr_mbox_init(struct rproc *rproc)
 
        cl = &priv->cl;
        cl->dev = dev;
-       cl->tx_block = true;
+       cl->tx_block = tx_block;
        cl->tx_tout = 100;
        cl->knows_txdone = false;
        cl->rx_callback = imx_rproc_rx_callback;
@@ -1083,7 +1083,7 @@ static int imx_rproc_probe(struct platform_device *pdev)
 
        INIT_WORK(&priv->rproc_work, imx_rproc_vq_work);
 
-       ret = imx_rproc_xtr_mbox_init(rproc);
+       ret = imx_rproc_xtr_mbox_init(rproc, true);
        if (ret)
                goto err_put_wkq;