mailbox/omap: remove omap_mbox_type_t from mailbox ops

The type definition omap_mbox_type_t used for distinguishing
OMAP1 from OMAP2+ mailboxes is no longer needed after the
removal of OMAP1 mailbox driver, and has therefore been
cleaned up. This cleanup also eliminates the need for the
polling logic used for checking the transmit readiness.

Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

drivers/mailbox/mailbox-omap2.c

@@ -205,7 +205,6 @@ static void omap2_mbox_restore_ctx(struct omap_mbox *mbox)
 }
 
 static struct omap_mbox_ops omap2_mbox_ops = {
-	.type		= OMAP_MBOX_TYPE2,
 	.startup	= omap2_mbox_startup,
 	.shutdown	= omap2_mbox_shutdown,
 	.fifo_read	= omap2_mbox_fifo_read,

drivers/mailbox/omap-mailbox.c

@@ -24,7 +24,6 @@
 #include <linux/interrupt.h>
 #include <linux/spinlock.h>
 #include <linux/mutex.h>
-#include <linux/delay.h>
 #include <linux/slab.h>
 #include <linux/kfifo.h>
 #include <linux/err.h>
@@ -74,20 +73,6 @@ static inline int is_mbox_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq)
 /*
  * message sender
  */
-static int __mbox_poll_for_space(struct omap_mbox *mbox)
-{
-	int ret = 0, i = 1000;
-
-	while (mbox_fifo_full(mbox)) {
-		if (mbox->ops->type == OMAP_MBOX_TYPE2)
-			return -1;
-		if (--i == 0)
-			return -1;
-		udelay(1);
-	}
-	return ret;
-}
-
 int omap_mbox_msg_send(struct omap_mbox *mbox, mbox_msg_t msg)
 {
 	struct omap_mbox_queue *mq = mbox->txq;
@@ -100,7 +85,7 @@ int omap_mbox_msg_send(struct omap_mbox *mbox, mbox_msg_t msg)
 		goto out;
 	}
 
-	if (kfifo_is_empty(&mq->fifo) && !__mbox_poll_for_space(mbox)) {
+	if (kfifo_is_empty(&mq->fifo) && !mbox_fifo_full(mbox)) {
 		mbox_fifo_write(mbox, msg);
 		goto out;
 	}
@@ -158,7 +143,7 @@ static void mbox_tx_tasklet(unsigned long tx_data)
 	int ret;
 
 	while (kfifo_len(&mq->fifo)) {
-		if (__mbox_poll_for_space(mbox)) {
+		if (mbox_fifo_full(mbox)) {
 			omap_mbox_enable_irq(mbox, IRQ_TX);
 			break;
 		}
@@ -223,9 +208,6 @@ static void __mbox_rx_interrupt(struct omap_mbox *mbox)
 
 		len = kfifo_in(&mq->fifo, (unsigned char *)&msg, sizeof(msg));
 		WARN_ON(len != sizeof(msg));
-
-		if (mbox->ops->type == OMAP_MBOX_TYPE1)
-			break;
 	}
 
 	/* no more messages in the fifo. clear IRQ source. */

drivers/mailbox/omap-mbox.h

@@ -16,12 +16,7 @@
 #include <linux/workqueue.h>
 #include <linux/omap-mailbox.h>
 
-typedef int __bitwise omap_mbox_type_t;
-#define OMAP_MBOX_TYPE1 ((__force omap_mbox_type_t) 1)
-#define OMAP_MBOX_TYPE2 ((__force omap_mbox_type_t) 2)
-
 struct omap_mbox_ops {
-	omap_mbox_type_t	type;
 	int		(*startup)(struct omap_mbox *mbox);
 	void		(*shutdown)(struct omap_mbox *mbox);
 	/* fifo */