84 	struct omap_mbox	*mbox;  member
153 static mbox_msg_t mbox_fifo_read(struct omap_mbox *mbox)  in mbox_fifo_read()  argument
155 	struct omap_mbox_fifo *fifo = &mbox->rx_fifo;  in mbox_fifo_read()
156 	return (mbox_msg_t) mbox_read_reg(mbox->parent, fifo->msg);  in mbox_fifo_read()
159 static void mbox_fifo_write(struct omap_mbox *mbox, mbox_msg_t msg)  in mbox_fifo_write()  argument
161 	struct omap_mbox_fifo *fifo = &mbox->tx_fifo;  in mbox_fifo_write()
162 	mbox_write_reg(mbox->parent, msg, fifo->msg);  in mbox_fifo_write()
165 static int mbox_fifo_empty(struct omap_mbox *mbox)  in mbox_fifo_empty()  argument
167 	struct omap_mbox_fifo *fifo = &mbox->rx_fifo;  in mbox_fifo_empty()
168 	return (mbox_read_reg(mbox->parent, fifo->msg_stat) == 0);  in mbox_fifo_empty()
171 static int mbox_fifo_full(struct omap_mbox *mbox)  in mbox_fifo_full()  argument
173 	struct omap_mbox_fifo *fifo = &mbox->tx_fifo;  in mbox_fifo_full()
174 	return mbox_read_reg(mbox->parent, fifo->fifo_stat);  in mbox_fifo_full()
178 static void ack_mbox_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq)  in ack_mbox_irq()  argument
181 				&mbox->tx_fifo : &mbox->rx_fifo;  in ack_mbox_irq()
185 	mbox_write_reg(mbox->parent, bit, irqstatus);  in ack_mbox_irq()
188 	mbox_read_reg(mbox->parent, irqstatus);  in ack_mbox_irq()
191 static int is_mbox_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq)  in is_mbox_irq()  argument
194 				&mbox->tx_fifo : &mbox->rx_fifo;  in is_mbox_irq()
199 	u32 enable = mbox_read_reg(mbox->parent, irqenable);  in is_mbox_irq()
200 	u32 status = mbox_read_reg(mbox->parent, irqstatus);  in is_mbox_irq()
209 	struct omap_mbox *mbox = mbox_chan_to_omap_mbox(chan);  in omap_mbox_save_ctx()  local
211 	if (WARN_ON(!mbox))  in omap_mbox_save_ctx()
214 	if (mbox->intr_type)  in omap_mbox_save_ctx()
219 		mbox->ctx[i] = mbox_read_reg(mbox->parent, i * sizeof(u32));  in omap_mbox_save_ctx()
221 		dev_dbg(mbox->dev, "%s: [%02x] %08x\n", __func__,  in omap_mbox_save_ctx()
222 			i, mbox->ctx[i]);  in omap_mbox_save_ctx()
231 	struct omap_mbox *mbox = mbox_chan_to_omap_mbox(chan);  in omap_mbox_restore_ctx()  local
233 	if (WARN_ON(!mbox))  in omap_mbox_restore_ctx()
236 	if (mbox->intr_type)  in omap_mbox_restore_ctx()
241 		mbox_write_reg(mbox->parent, mbox->ctx[i], i * sizeof(u32));  in omap_mbox_restore_ctx()
242 		dev_dbg(mbox->dev, "%s: [%02x] %08x\n", __func__,  in omap_mbox_restore_ctx()
243 			i, mbox->ctx[i]);  in omap_mbox_restore_ctx()
248 static void _omap_mbox_enable_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq)  in _omap_mbox_enable_irq()  argument
252 				&mbox->tx_fifo : &mbox->rx_fifo;  in _omap_mbox_enable_irq()
256 	l = mbox_read_reg(mbox->parent, irqenable);  in _omap_mbox_enable_irq()
258 	mbox_write_reg(mbox->parent, l, irqenable);  in _omap_mbox_enable_irq()
261 static void _omap_mbox_disable_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq)  in _omap_mbox_disable_irq()  argument
264 				&mbox->tx_fifo : &mbox->rx_fifo;  in _omap_mbox_disable_irq()
272 	if (!mbox->intr_type)  in _omap_mbox_disable_irq()
273 		bit = mbox_read_reg(mbox->parent, irqdisable) & ~bit;  in _omap_mbox_disable_irq()
275 	mbox_write_reg(mbox->parent, bit, irqdisable);  in _omap_mbox_disable_irq()
280 	struct omap_mbox *mbox = mbox_chan_to_omap_mbox(chan);  in omap_mbox_enable_irq()  local
282 	if (WARN_ON(!mbox))  in omap_mbox_enable_irq()
285 	_omap_mbox_enable_irq(mbox, irq);  in omap_mbox_enable_irq()
291 	struct omap_mbox *mbox = mbox_chan_to_omap_mbox(chan);  in omap_mbox_disable_irq()  local
293 	if (WARN_ON(!mbox))  in omap_mbox_disable_irq()
296 	_omap_mbox_disable_irq(mbox, irq);  in omap_mbox_disable_irq()
314 		mbox_chan_received_data(mq->mbox->chan, (void *)msg);  in mbox_rx_work()
318 			_omap_mbox_enable_irq(mq->mbox, IRQ_RX);  in mbox_rx_work()
327 static void __mbox_tx_interrupt(struct omap_mbox *mbox)  in __mbox_tx_interrupt()  argument
329 	_omap_mbox_disable_irq(mbox, IRQ_TX);  in __mbox_tx_interrupt()
330 	ack_mbox_irq(mbox, IRQ_TX);  in __mbox_tx_interrupt()
331 	mbox_chan_txdone(mbox->chan, 0);  in __mbox_tx_interrupt()
334 static void __mbox_rx_interrupt(struct omap_mbox *mbox)  in __mbox_rx_interrupt()  argument
336 	struct omap_mbox_queue *mq = mbox->rxq;  in __mbox_rx_interrupt()
340 	while (!mbox_fifo_empty(mbox)) {  in __mbox_rx_interrupt()
342 			_omap_mbox_disable_irq(mbox, IRQ_RX);  in __mbox_rx_interrupt()
347 		msg = mbox_fifo_read(mbox);  in __mbox_rx_interrupt()
354 	ack_mbox_irq(mbox, IRQ_RX);  in __mbox_rx_interrupt()
356 	schedule_work(&mbox->rxq->work);  in __mbox_rx_interrupt()
361 	struct omap_mbox *mbox = p;  in mbox_interrupt()  local
363 	if (is_mbox_irq(mbox, IRQ_TX))  in mbox_interrupt()
364 		__mbox_tx_interrupt(mbox);  in mbox_interrupt()
366 	if (is_mbox_irq(mbox, IRQ_RX))  in mbox_interrupt()
367 		__mbox_rx_interrupt(mbox);  in mbox_interrupt()
372 static struct omap_mbox_queue *mbox_queue_alloc(struct omap_mbox *mbox,  in mbox_queue_alloc()  argument
403 static int omap_mbox_startup(struct omap_mbox *mbox)  in omap_mbox_startup()  argument
408 	mq = mbox_queue_alloc(mbox, mbox_rx_work);  in omap_mbox_startup()
411 	mbox->rxq = mq;  in omap_mbox_startup()
412 	mq->mbox = mbox;  in omap_mbox_startup()
414 	ret = request_irq(mbox->irq, mbox_interrupt, IRQF_SHARED,  in omap_mbox_startup()
415 			  mbox->name, mbox);  in omap_mbox_startup()
421 	_omap_mbox_enable_irq(mbox, IRQ_RX);  in omap_mbox_startup()
426 	mbox_queue_free(mbox->rxq);  in omap_mbox_startup()
430 static void omap_mbox_fini(struct omap_mbox *mbox)  in omap_mbox_fini()  argument
432 	_omap_mbox_disable_irq(mbox, IRQ_RX);  in omap_mbox_fini()
433 	free_irq(mbox->irq, mbox);  in omap_mbox_fini()
434 	flush_work(&mbox->rxq->work);  in omap_mbox_fini()
435 	mbox_queue_free(mbox->rxq);  in omap_mbox_fini()
441 	struct omap_mbox *_mbox, *mbox = NULL;  in omap_mbox_device_find()  local
450 			mbox = _mbox;  in omap_mbox_device_find()
454 	return mbox;  in omap_mbox_device_find()
461 	struct omap_mbox *mbox = NULL;  in omap_mbox_request_channel()  local
478 		mbox = omap_mbox_device_find(mdev, chan_name);  in omap_mbox_request_channel()
479 		if (mbox)  in omap_mbox_request_channel()
484 	if (!mbox || !mbox->chan)  in omap_mbox_request_channel()
487 	chan = mbox->chan;  in omap_mbox_request_channel()
496 	ret = chan->mbox->ops->startup(chan);  in omap_mbox_request_channel()
520 		struct omap_mbox *mbox = mboxes[i];  in omap_mbox_register()  local
521 		mbox->dev = device_create(&omap_mbox_class, mdev->dev,  in omap_mbox_register()
522 					0, mbox, "%s", mbox->name);  in omap_mbox_register()
523 		if (IS_ERR(mbox->dev)) {  in omap_mbox_register()
524 			ret = PTR_ERR(mbox->dev);  in omap_mbox_register()
565 	struct omap_mbox *mbox = mbox_chan_to_omap_mbox(chan);  in omap_mbox_chan_startup()  local
566 	struct omap_mbox_device *mdev = mbox->parent;  in omap_mbox_chan_startup()
571 	ret = omap_mbox_startup(mbox);  in omap_mbox_chan_startup()
580 	struct omap_mbox *mbox = mbox_chan_to_omap_mbox(chan);  in omap_mbox_chan_shutdown()  local
581 	struct omap_mbox_device *mdev = mbox->parent;  in omap_mbox_chan_shutdown()
584 	omap_mbox_fini(mbox);  in omap_mbox_chan_shutdown()
591 	struct omap_mbox *mbox = mbox_chan_to_omap_mbox(chan);  in omap_mbox_chan_send_data()  local
594 	if (!mbox)  in omap_mbox_chan_send_data()
597 	if (!mbox_fifo_full(mbox)) {  in omap_mbox_chan_send_data()
598 		mbox_fifo_write(mbox, (mbox_msg_t)data);  in omap_mbox_chan_send_data()
603 	_omap_mbox_enable_irq(mbox, IRQ_TX);  in omap_mbox_chan_send_data()
638 	struct omap_mbox *mbox;  in omap_mbox_of_xlate()  local
651 	mbox = omap_mbox_device_find(mdev, node->name);  in omap_mbox_of_xlate()
653 	return mbox ? mbox->chan : NULL;  in omap_mbox_of_xlate()
661 	struct omap_mbox **list, *mbox, *mboxblk;  in omap_mbox_probe()  local
770 	mboxblk = devm_kzalloc(&pdev->dev, info_count * sizeof(*mbox),  in omap_mbox_probe()
775 	mbox = mboxblk;  in omap_mbox_probe()
778 		fifo = &mbox->tx_fifo;  in omap_mbox_probe()
786 		fifo = &mbox->rx_fifo;  in omap_mbox_probe()
794 		mbox->intr_type = intr_type;  in omap_mbox_probe()
796 		mbox->parent = mdev;  in omap_mbox_probe()
797 		mbox->name = finfo->name;  in omap_mbox_probe()
798 		mbox->irq = platform_get_irq(pdev, finfo->tx_irq);  in omap_mbox_probe()
799 		if (mbox->irq < 0)  in omap_mbox_probe()
800 			return mbox->irq;  in omap_mbox_probe()
801 		mbox->chan = &chnls[i];  in omap_mbox_probe()
802 		chnls[i].con_priv = mbox;  in omap_mbox_probe()
803 		list[i] = mbox++;  in omap_mbox_probe()