summaryrefslogtreecommitdiff
path: root/arch/arm/plat-omap
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/plat-omap')
-rw-r--r--arch/arm/plat-omap/include/plat/mailbox.h1
-rw-r--r--arch/arm/plat-omap/mailbox.c115
2 files changed, 9 insertions, 107 deletions
diff --git a/arch/arm/plat-omap/include/plat/mailbox.h b/arch/arm/plat-omap/include/plat/mailbox.h
index b7a6991814e..319306a8f44 100644
--- a/arch/arm/plat-omap/include/plat/mailbox.h
+++ b/arch/arm/plat-omap/include/plat/mailbox.h
@@ -8,7 +8,6 @@
#include <linux/blkdev.h>
typedef u32 mbox_msg_t;
-typedef void (mbox_receiver_t)(mbox_msg_t msg);
struct omap_mbox;
typedef int __bitwise omap_mbox_irq_t;
diff --git a/arch/arm/plat-omap/mailbox.c b/arch/arm/plat-omap/mailbox.c
index f82810eeb3f..13ca2365f27 100644
--- a/arch/arm/plat-omap/mailbox.c
+++ b/arch/arm/plat-omap/mailbox.c
@@ -71,7 +71,7 @@ static inline int is_mbox_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq)
/*
* message sender
*/
-static int __mbox_msg_send(struct omap_mbox *mbox, mbox_msg_t msg, void *arg)
+static int __mbox_msg_send(struct omap_mbox *mbox, mbox_msg_t msg)
{
int ret = 0, i = 1000;
@@ -82,15 +82,7 @@ static int __mbox_msg_send(struct omap_mbox *mbox, mbox_msg_t msg, void *arg)
return -1;
udelay(1);
}
-
- if (arg && mbox->txq->callback) {
- ret = mbox->txq->callback(arg);
- if (ret)
- goto out;
- }
-
mbox_fifo_write(mbox, msg);
- out:
return ret;
}
@@ -152,7 +144,7 @@ static void mbox_tx_work(struct work_struct *work)
tx_data = rq->special;
- ret = __mbox_msg_send(mbox, tx_data->msg, tx_data->arg);
+ ret = __mbox_msg_send(mbox, tx_data->msg);
if (ret) {
enable_mbox_irq(mbox, IRQ_TX);
spin_lock(q->queue_lock);
@@ -180,11 +172,6 @@ static void mbox_rx_work(struct work_struct *work)
mbox_msg_t msg;
unsigned long flags;
- if (mbox->rxq->callback == NULL) {
- sysfs_notify(&mbox->dev->kobj, NULL, "mbox");
- return;
- }
-
while (1) {
spin_lock_irqsave(q->queue_lock, flags);
rq = blk_fetch_request(q);
@@ -257,69 +244,6 @@ static irqreturn_t mbox_interrupt(int irq, void *p)
return IRQ_HANDLED;
}
-/*
- * sysfs files
- */
-static ssize_t
-omap_mbox_write(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- int ret;
- mbox_msg_t *p = (mbox_msg_t *)buf;
- struct omap_mbox *mbox = dev_get_drvdata(dev);
-
- for (; count >= sizeof(mbox_msg_t); count -= sizeof(mbox_msg_t)) {
- ret = omap_mbox_msg_send(mbox, be32_to_cpu(*p), NULL);
- if (ret)
- return -EAGAIN;
- p++;
- }
-
- return (size_t)((char *)p - buf);
-}
-
-static ssize_t
-omap_mbox_read(struct device *dev, struct device_attribute *attr, char *buf)
-{
- unsigned long flags;
- struct request *rq;
- mbox_msg_t *p = (mbox_msg_t *) buf;
- struct omap_mbox *mbox = dev_get_drvdata(dev);
- struct request_queue *q = mbox->rxq->queue;
-
- while (1) {
- spin_lock_irqsave(q->queue_lock, flags);
- rq = blk_fetch_request(q);
- spin_unlock_irqrestore(q->queue_lock, flags);
-
- if (!rq)
- break;
-
- *p = (mbox_msg_t)rq->special;
-
- blk_end_request_all(rq, 0);
-
- p++;
- }
-
- pr_debug("%02x %02x %02x %02x\n", buf[0], buf[1], buf[2], buf[3]);
-
- return (size_t) ((char *)p - buf);
-}
-
-static DEVICE_ATTR(mbox, S_IRUGO | S_IWUSR, omap_mbox_read, omap_mbox_write);
-
-static ssize_t mbox_show(struct class *class, char *buf)
-{
- return sprintf(buf, "mbox");
-}
-
-static CLASS_ATTR(mbox, S_IRUGO, mbox_show, NULL);
-
-static struct class omap_mbox_class = {
- .name = "omap-mailbox",
-};
-
static struct omap_mbox_queue *mbox_queue_alloc(struct omap_mbox *mbox,
request_fn_proc *proc,
void (*work) (struct work_struct *))
@@ -353,7 +277,7 @@ static void mbox_queue_free(struct omap_mbox_queue *q)
kfree(q);
}
-static int omap_mbox_init(struct omap_mbox *mbox)
+static int omap_mbox_startup(struct omap_mbox *mbox)
{
int ret;
struct omap_mbox_queue *mq;
@@ -436,7 +360,7 @@ struct omap_mbox *omap_mbox_get(const char *name)
read_unlock(&mboxes_lock);
- ret = omap_mbox_init(mbox);
+ ret = omap_mbox_startup(mbox);
if (ret)
return ERR_PTR(-ENODEV);
@@ -460,15 +384,6 @@ int omap_mbox_register(struct device *parent, struct omap_mbox *mbox)
if (mbox->next)
return -EBUSY;
- mbox->dev = device_create(&omap_mbox_class,
- parent, 0, mbox, "%s", mbox->name);
- if (IS_ERR(mbox->dev))
- return PTR_ERR(mbox->dev);
-
- ret = device_create_file(mbox->dev, &dev_attr_mbox);
- if (ret)
- goto err_sysfs;
-
write_lock(&mboxes_lock);
tmp = find_mboxes(mbox->name);
if (*tmp) {
@@ -482,9 +397,6 @@ int omap_mbox_register(struct device *parent, struct omap_mbox *mbox)
return 0;
err_find:
- device_remove_file(mbox->dev, &dev_attr_mbox);
-err_sysfs:
- device_unregister(mbox->dev);
return ret;
}
EXPORT_SYMBOL(omap_mbox_register);
@@ -500,8 +412,6 @@ int omap_mbox_unregister(struct omap_mbox *mbox)
*tmp = mbox->next;
mbox->next = NULL;
write_unlock(&mboxes_lock);
- device_remove_file(mbox->dev, &dev_attr_mbox);
- device_unregister(mbox->dev);
return 0;
}
tmp = &(*tmp)->next;
@@ -512,23 +422,16 @@ int omap_mbox_unregister(struct omap_mbox *mbox)
}
EXPORT_SYMBOL(omap_mbox_unregister);
-static int __init omap_mbox_class_init(void)
+static int __init omap_mbox_init(void)
{
- int ret = class_register(&omap_mbox_class);
- if (!ret)
- ret = class_create_file(&omap_mbox_class, &class_attr_mbox);
-
- return ret;
+ return 0;
}
+module_init(omap_mbox_init);
-static void __exit omap_mbox_class_exit(void)
+static void __exit omap_mbox_exit(void)
{
- class_remove_file(&omap_mbox_class, &class_attr_mbox);
- class_unregister(&omap_mbox_class);
}
-
-subsys_initcall(omap_mbox_class_init);
-module_exit(omap_mbox_class_exit);
+module_exit(omap_mbox_exit);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("omap mailbox: interrupt driven messaging");
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 19:05:41 +0000