diff options
| -rw-r--r-- | arch/arm/plat-omap/include/plat/mailbox.h | 1 | ||||
| -rw-r--r-- | arch/arm/plat-omap/mailbox.c | 115 |
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"); |