68 	struct omap_mbox	*mbox;  member
144 static u32 mbox_fifo_read(struct omap_mbox *mbox)  in mbox_fifo_read()  argument
146 	struct omap_mbox_fifo *fifo = &mbox->rx_fifo;  in mbox_fifo_read()
148 	return mbox_read_reg(mbox->parent, fifo->msg);  in mbox_fifo_read()
151 static void mbox_fifo_write(struct omap_mbox *mbox, u32 msg)  in mbox_fifo_write()  argument
153 	struct omap_mbox_fifo *fifo = &mbox->tx_fifo;  in mbox_fifo_write()
155 	mbox_write_reg(mbox->parent, msg, fifo->msg);  in mbox_fifo_write()
158 static int mbox_fifo_empty(struct omap_mbox *mbox)  in mbox_fifo_empty()  argument
160 	struct omap_mbox_fifo *fifo = &mbox->rx_fifo;  in mbox_fifo_empty()
162 	return (mbox_read_reg(mbox->parent, fifo->msg_stat) == 0);  in mbox_fifo_empty()
165 static int mbox_fifo_full(struct omap_mbox *mbox)  in mbox_fifo_full()  argument
167 	struct omap_mbox_fifo *fifo = &mbox->tx_fifo;  in mbox_fifo_full()
169 	return mbox_read_reg(mbox->parent, fifo->fifo_stat);  in mbox_fifo_full()
173 static void ack_mbox_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq)  in ack_mbox_irq()  argument
176 				&mbox->tx_fifo : &mbox->rx_fifo;  in ack_mbox_irq()
180 	mbox_write_reg(mbox->parent, bit, irqstatus);  in ack_mbox_irq()
183 	mbox_read_reg(mbox->parent, irqstatus);  in ack_mbox_irq()
186 static int is_mbox_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq)  in is_mbox_irq()  argument
189 				&mbox->tx_fifo : &mbox->rx_fifo;  in is_mbox_irq()
194 	u32 enable = mbox_read_reg(mbox->parent, irqenable);  in is_mbox_irq()
195 	u32 status = mbox_read_reg(mbox->parent, irqstatus);  in is_mbox_irq()
200 static void _omap_mbox_enable_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq)  in _omap_mbox_enable_irq()  argument
204 				&mbox->tx_fifo : &mbox->rx_fifo;  in _omap_mbox_enable_irq()
208 	l = mbox_read_reg(mbox->parent, irqenable);  in _omap_mbox_enable_irq()
210 	mbox_write_reg(mbox->parent, l, irqenable);  in _omap_mbox_enable_irq()
213 static void _omap_mbox_disable_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq)  in _omap_mbox_disable_irq()  argument
216 				&mbox->tx_fifo : &mbox->rx_fifo;  in _omap_mbox_disable_irq()
224 	if (!mbox->intr_type)  in _omap_mbox_disable_irq()
225 		bit = mbox_read_reg(mbox->parent, irqdisable) & ~bit;  in _omap_mbox_disable_irq()
227 	mbox_write_reg(mbox->parent, bit, irqdisable);  in _omap_mbox_disable_irq()
232 	struct omap_mbox *mbox = mbox_chan_to_omap_mbox(chan);  in omap_mbox_enable_irq()  local
234 	if (WARN_ON(!mbox))  in omap_mbox_enable_irq()
237 	_omap_mbox_enable_irq(mbox, irq);  in omap_mbox_enable_irq()
243 	struct omap_mbox *mbox = mbox_chan_to_omap_mbox(chan);  in omap_mbox_disable_irq()  local
245 	if (WARN_ON(!mbox))  in omap_mbox_disable_irq()
248 	_omap_mbox_disable_irq(mbox, irq);  in omap_mbox_disable_irq()
268 		mbox_chan_received_data(mq->mbox->chan, (void *)data);  in mbox_rx_work()
272 			_omap_mbox_enable_irq(mq->mbox, IRQ_RX);  in mbox_rx_work()
281 static void __mbox_tx_interrupt(struct omap_mbox *mbox)  in __mbox_tx_interrupt()  argument
283 	_omap_mbox_disable_irq(mbox, IRQ_TX);  in __mbox_tx_interrupt()
284 	ack_mbox_irq(mbox, IRQ_TX);  in __mbox_tx_interrupt()
285 	mbox_chan_txdone(mbox->chan, 0);  in __mbox_tx_interrupt()
288 static void __mbox_rx_interrupt(struct omap_mbox *mbox)  in __mbox_rx_interrupt()  argument
290 	struct omap_mbox_queue *mq = mbox->rxq;  in __mbox_rx_interrupt()
294 	while (!mbox_fifo_empty(mbox)) {  in __mbox_rx_interrupt()
296 			_omap_mbox_disable_irq(mbox, IRQ_RX);  in __mbox_rx_interrupt()
301 		msg = mbox_fifo_read(mbox);  in __mbox_rx_interrupt()
308 	ack_mbox_irq(mbox, IRQ_RX);  in __mbox_rx_interrupt()
310 	schedule_work(&mbox->rxq->work);  in __mbox_rx_interrupt()
315 	struct omap_mbox *mbox = p;  in mbox_interrupt()  local
317 	if (is_mbox_irq(mbox, IRQ_TX))  in mbox_interrupt()
318 		__mbox_tx_interrupt(mbox);  in mbox_interrupt()
320 	if (is_mbox_irq(mbox, IRQ_RX))  in mbox_interrupt()
321 		__mbox_rx_interrupt(mbox);  in mbox_interrupt()
326 static struct omap_mbox_queue *mbox_queue_alloc(struct omap_mbox *mbox,  in mbox_queue_alloc()  argument
357 static int omap_mbox_startup(struct omap_mbox *mbox)  in omap_mbox_startup()  argument
362 	mq = mbox_queue_alloc(mbox, mbox_rx_work);  in omap_mbox_startup()
365 	mbox->rxq = mq;  in omap_mbox_startup()
366 	mq->mbox = mbox;  in omap_mbox_startup()
368 	ret = request_irq(mbox->irq, mbox_interrupt, IRQF_SHARED,  in omap_mbox_startup()
369 			  mbox->name, mbox);  in omap_mbox_startup()
375 	if (mbox->send_no_irq)  in omap_mbox_startup()
376 		mbox->chan->txdone_method = TXDONE_BY_ACK;  in omap_mbox_startup()
378 	_omap_mbox_enable_irq(mbox, IRQ_RX);  in omap_mbox_startup()
383 	mbox_queue_free(mbox->rxq);  in omap_mbox_startup()
387 static void omap_mbox_fini(struct omap_mbox *mbox)  in omap_mbox_fini()  argument
389 	_omap_mbox_disable_irq(mbox, IRQ_RX);  in omap_mbox_fini()
390 	free_irq(mbox->irq, mbox);  in omap_mbox_fini()
391 	flush_work(&mbox->rxq->work);  in omap_mbox_fini()
392 	mbox_queue_free(mbox->rxq);  in omap_mbox_fini()
398 	struct omap_mbox *_mbox, *mbox = NULL;  in omap_mbox_device_find()  local
407 			mbox = _mbox;  in omap_mbox_device_find()
411 	return mbox;  in omap_mbox_device_find()
418 	struct omap_mbox *mbox = NULL;  in omap_mbox_request_channel()  local
433 		mbox = omap_mbox_device_find(mdev, chan_name);  in omap_mbox_request_channel()
434 		if (mbox)  in omap_mbox_request_channel()
439 	if (!mbox || !mbox->chan)  in omap_mbox_request_channel()
442 	ret = mbox_bind_client(mbox->chan, cl);  in omap_mbox_request_channel()
446 	return mbox->chan;  in omap_mbox_request_channel()
463 		struct omap_mbox *mbox = mboxes[i];  in omap_mbox_register()  local
465 		mbox->dev = device_create(&omap_mbox_class, mdev->dev,  in omap_mbox_register()
466 					0, mbox, "%s", mbox->name);  in omap_mbox_register()
467 		if (IS_ERR(mbox->dev)) {  in omap_mbox_register()
468 			ret = PTR_ERR(mbox->dev);  in omap_mbox_register()
507 	struct omap_mbox *mbox = mbox_chan_to_omap_mbox(chan);  in omap_mbox_chan_startup()  local
508 	struct omap_mbox_device *mdev = mbox->parent;  in omap_mbox_chan_startup()
513 	ret = omap_mbox_startup(mbox);  in omap_mbox_chan_startup()
522 	struct omap_mbox *mbox = mbox_chan_to_omap_mbox(chan);  in omap_mbox_chan_shutdown()  local
523 	struct omap_mbox_device *mdev = mbox->parent;  in omap_mbox_chan_shutdown()
526 	omap_mbox_fini(mbox);  in omap_mbox_chan_shutdown()
531 static int omap_mbox_chan_send_noirq(struct omap_mbox *mbox, u32 msg)  in omap_mbox_chan_send_noirq()  argument
535 	if (!mbox_fifo_full(mbox)) {  in omap_mbox_chan_send_noirq()
536 		_omap_mbox_enable_irq(mbox, IRQ_RX);  in omap_mbox_chan_send_noirq()
537 		mbox_fifo_write(mbox, msg);  in omap_mbox_chan_send_noirq()
539 		_omap_mbox_disable_irq(mbox, IRQ_RX);  in omap_mbox_chan_send_noirq()
542 		mbox_fifo_read(mbox);  in omap_mbox_chan_send_noirq()
543 		ack_mbox_irq(mbox, IRQ_RX);  in omap_mbox_chan_send_noirq()
549 static int omap_mbox_chan_send(struct omap_mbox *mbox, u32 msg)  in omap_mbox_chan_send()  argument
553 	if (!mbox_fifo_full(mbox)) {  in omap_mbox_chan_send()
554 		mbox_fifo_write(mbox, msg);  in omap_mbox_chan_send()
559 	_omap_mbox_enable_irq(mbox, IRQ_TX);  in omap_mbox_chan_send()
565 	struct omap_mbox *mbox = mbox_chan_to_omap_mbox(chan);  in omap_mbox_chan_send_data()  local
569 	if (!mbox)  in omap_mbox_chan_send_data()
572 	if (mbox->send_no_irq)  in omap_mbox_chan_send_data()
573 		ret = omap_mbox_chan_send_noirq(mbox, msg);  in omap_mbox_chan_send_data()
575 		ret = omap_mbox_chan_send(mbox, msg);  in omap_mbox_chan_send_data()
668 	struct omap_mbox *mbox;  in omap_mbox_of_xlate()  local
681 	mbox = omap_mbox_device_find(mdev, node->name);  in omap_mbox_of_xlate()
683 	return mbox ? mbox->chan : ERR_PTR(-ENOENT);  in omap_mbox_of_xlate()
690 	struct omap_mbox **list, *mbox, *mboxblk;  in omap_mbox_probe()  local
783 	mboxblk = devm_kcalloc(&pdev->dev, info_count, sizeof(*mbox),  in omap_mbox_probe()
788 	mbox = mboxblk;  in omap_mbox_probe()
791 		fifo = &mbox->tx_fifo;  in omap_mbox_probe()
799 		fifo = &mbox->rx_fifo;  in omap_mbox_probe()
807 		mbox->send_no_irq = finfo->send_no_irq;  in omap_mbox_probe()
808 		mbox->intr_type = intr_type;  in omap_mbox_probe()
810 		mbox->parent = mdev;  in omap_mbox_probe()
811 		mbox->name = finfo->name;  in omap_mbox_probe()
812 		mbox->irq = platform_get_irq(pdev, finfo->tx_irq);  in omap_mbox_probe()
813 		if (mbox->irq < 0)  in omap_mbox_probe()
814 			return mbox->irq;  in omap_mbox_probe()
815 		mbox->chan = &chnls[i];  in omap_mbox_probe()
816 		chnls[i].con_priv = mbox;  in omap_mbox_probe()
817 		list[i] = mbox++;  in omap_mbox_probe()