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path: root/drivers/mailbox/omap-mailbox.c
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Diffstat (limited to 'drivers/mailbox/omap-mailbox.c')
-rw-r--r--drivers/mailbox/omap-mailbox.c43
1 files changed, 26 insertions, 17 deletions
diff --git a/drivers/mailbox/omap-mailbox.c b/drivers/mailbox/omap-mailbox.c
index ca50177a33f2..a3cd63583cf7 100644
--- a/drivers/mailbox/omap-mailbox.c
+++ b/drivers/mailbox/omap-mailbox.c
@@ -3,7 +3,7 @@
* OMAP mailbox driver
*
* Copyright (C) 2006-2009 Nokia Corporation. All rights reserved.
- * Copyright (C) 2013-2016 Texas Instruments Incorporated - http://www.ti.com
+ * Copyright (C) 2013-2019 Texas Instruments Incorporated - http://www.ti.com
*
* Contact: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
* Suman Anna <s-anna@ti.com>
@@ -141,14 +141,14 @@ void mbox_write_reg(struct omap_mbox_device *mdev, u32 val, size_t ofs)
}
/* Mailbox FIFO handle functions */
-static mbox_msg_t mbox_fifo_read(struct omap_mbox *mbox)
+static u32 mbox_fifo_read(struct omap_mbox *mbox)
{
struct omap_mbox_fifo *fifo = &mbox->rx_fifo;
- return (mbox_msg_t)mbox_read_reg(mbox->parent, fifo->msg);
+ return mbox_read_reg(mbox->parent, fifo->msg);
}
-static void mbox_fifo_write(struct omap_mbox *mbox, mbox_msg_t msg)
+static void mbox_fifo_write(struct omap_mbox *mbox, u32 msg)
{
struct omap_mbox_fifo *fifo = &mbox->tx_fifo;
@@ -256,14 +256,16 @@ static void mbox_rx_work(struct work_struct *work)
{
struct omap_mbox_queue *mq =
container_of(work, struct omap_mbox_queue, work);
- mbox_msg_t msg;
+ mbox_msg_t data;
+ u32 msg;
int len;
while (kfifo_len(&mq->fifo) >= sizeof(msg)) {
len = kfifo_out(&mq->fifo, (unsigned char *)&msg, sizeof(msg));
WARN_ON(len != sizeof(msg));
+ data = msg;
- mbox_chan_received_data(mq->mbox->chan, (void *)msg);
+ mbox_chan_received_data(mq->mbox->chan, (void *)data);
spin_lock_irq(&mq->lock);
if (mq->full) {
mq->full = false;
@@ -286,7 +288,7 @@ static void __mbox_tx_interrupt(struct omap_mbox *mbox)
static void __mbox_rx_interrupt(struct omap_mbox *mbox)
{
struct omap_mbox_queue *mq = mbox->rxq;
- mbox_msg_t msg;
+ u32 msg;
int len;
while (!mbox_fifo_empty(mbox)) {
@@ -540,13 +542,13 @@ static void omap_mbox_chan_shutdown(struct mbox_chan *chan)
mutex_unlock(&mdev->cfg_lock);
}
-static int omap_mbox_chan_send_noirq(struct omap_mbox *mbox, void *data)
+static int omap_mbox_chan_send_noirq(struct omap_mbox *mbox, u32 msg)
{
int ret = -EBUSY;
if (!mbox_fifo_full(mbox)) {
_omap_mbox_enable_irq(mbox, IRQ_RX);
- mbox_fifo_write(mbox, (mbox_msg_t)data);
+ mbox_fifo_write(mbox, msg);
ret = 0;
_omap_mbox_disable_irq(mbox, IRQ_RX);
@@ -558,12 +560,12 @@ static int omap_mbox_chan_send_noirq(struct omap_mbox *mbox, void *data)
return ret;
}
-static int omap_mbox_chan_send(struct omap_mbox *mbox, void *data)
+static int omap_mbox_chan_send(struct omap_mbox *mbox, u32 msg)
{
int ret = -EBUSY;
if (!mbox_fifo_full(mbox)) {
- mbox_fifo_write(mbox, (mbox_msg_t)data);
+ mbox_fifo_write(mbox, msg);
ret = 0;
}
@@ -576,14 +578,15 @@ static int omap_mbox_chan_send_data(struct mbox_chan *chan, void *data)
{
struct omap_mbox *mbox = mbox_chan_to_omap_mbox(chan);
int ret;
+ u32 msg = omap_mbox_message(data);
if (!mbox)
return -EINVAL;
if (mbox->send_no_irq)
- ret = omap_mbox_chan_send_noirq(mbox, data);
+ ret = omap_mbox_chan_send_noirq(mbox, msg);
else
- ret = omap_mbox_chan_send(mbox, data);
+ ret = omap_mbox_chan_send(mbox, msg);
return ret;
}
@@ -657,6 +660,10 @@ static const struct of_device_id omap_mailbox_of_match[] = {
.data = &omap4_data,
},
{
+ .compatible = "ti,am654-mailbox",
+ .data = &omap4_data,
+ },
+ {
/* end */
},
};
@@ -830,7 +837,10 @@ static int omap_mbox_probe(struct platform_device *pdev)
mdev->intr_type = intr_type;
mdev->mboxes = list;
- /* OMAP does not have a Tx-Done IRQ, but rather a Tx-Ready IRQ */
+ /*
+ * OMAP/K3 Mailbox IP does not have a Tx-Done IRQ, but rather a Tx-Ready
+ * IRQ and is needed to run the Tx state machine
+ */
mdev->controller.txdone_irq = true;
mdev->controller.dev = mdev->dev;
mdev->controller.ops = &omap_mbox_chan_ops;
@@ -899,9 +909,8 @@ static int __init omap_mbox_init(void)
return err;
/* kfifo size sanity check: alignment and minimal size */
- mbox_kfifo_size = ALIGN(mbox_kfifo_size, sizeof(mbox_msg_t));
- mbox_kfifo_size = max_t(unsigned int, mbox_kfifo_size,
- sizeof(mbox_msg_t));
+ mbox_kfifo_size = ALIGN(mbox_kfifo_size, sizeof(u32));
+ mbox_kfifo_size = max_t(unsigned int, mbox_kfifo_size, sizeof(u32));
err = platform_driver_register(&omap_mbox_driver);
if (err)