86 	struct omap_mbox	*mbox;  member
157 static mbox_msg_t mbox_fifo_read(struct omap_mbox *mbox)  in mbox_fifo_read()  argument
159 	struct omap_mbox_fifo *fifo = &mbox->rx_fifo;  in mbox_fifo_read()
160 	return (mbox_msg_t) mbox_read_reg(mbox->parent, fifo->msg);  in mbox_fifo_read()
163 static void mbox_fifo_write(struct omap_mbox *mbox, mbox_msg_t msg)  in mbox_fifo_write()  argument
165 	struct omap_mbox_fifo *fifo = &mbox->tx_fifo;  in mbox_fifo_write()
166 	mbox_write_reg(mbox->parent, msg, fifo->msg);  in mbox_fifo_write()
169 static int mbox_fifo_empty(struct omap_mbox *mbox)  in mbox_fifo_empty()  argument
171 	struct omap_mbox_fifo *fifo = &mbox->rx_fifo;  in mbox_fifo_empty()
172 	return (mbox_read_reg(mbox->parent, fifo->msg_stat) == 0);  in mbox_fifo_empty()
175 static int mbox_fifo_full(struct omap_mbox *mbox)  in mbox_fifo_full()  argument
177 	struct omap_mbox_fifo *fifo = &mbox->tx_fifo;  in mbox_fifo_full()
178 	return mbox_read_reg(mbox->parent, fifo->fifo_stat);  in mbox_fifo_full()
182 static void ack_mbox_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq)  in ack_mbox_irq()  argument
185 				&mbox->tx_fifo : &mbox->rx_fifo;  in ack_mbox_irq()
189 	mbox_write_reg(mbox->parent, bit, irqstatus);  in ack_mbox_irq()
192 	mbox_read_reg(mbox->parent, irqstatus);  in ack_mbox_irq()
195 static int is_mbox_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq)  in is_mbox_irq()  argument
198 				&mbox->tx_fifo : &mbox->rx_fifo;  in is_mbox_irq()
203 	u32 enable = mbox_read_reg(mbox->parent, irqenable);  in is_mbox_irq()
204 	u32 status = mbox_read_reg(mbox->parent, irqstatus);  in is_mbox_irq()
213 	struct omap_mbox *mbox = mbox_chan_to_omap_mbox(chan);  in omap_mbox_save_ctx()  local
215 	if (WARN_ON(!mbox))  in omap_mbox_save_ctx()
218 	if (mbox->intr_type)  in omap_mbox_save_ctx()
223 		mbox->ctx[i] = mbox_read_reg(mbox->parent, i * sizeof(u32));  in omap_mbox_save_ctx()
225 		dev_dbg(mbox->dev, "%s: [%02x] %08x\n", __func__,  in omap_mbox_save_ctx()
226 			i, mbox->ctx[i]);  in omap_mbox_save_ctx()
235 	struct omap_mbox *mbox = mbox_chan_to_omap_mbox(chan);  in omap_mbox_restore_ctx()  local
237 	if (WARN_ON(!mbox))  in omap_mbox_restore_ctx()
240 	if (mbox->intr_type)  in omap_mbox_restore_ctx()
245 		mbox_write_reg(mbox->parent, mbox->ctx[i], i * sizeof(u32));  in omap_mbox_restore_ctx()
246 		dev_dbg(mbox->dev, "%s: [%02x] %08x\n", __func__,  in omap_mbox_restore_ctx()
247 			i, mbox->ctx[i]);  in omap_mbox_restore_ctx()
252 static void _omap_mbox_enable_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq)  in _omap_mbox_enable_irq()  argument
256 				&mbox->tx_fifo : &mbox->rx_fifo;  in _omap_mbox_enable_irq()
260 	l = mbox_read_reg(mbox->parent, irqenable);  in _omap_mbox_enable_irq()
262 	mbox_write_reg(mbox->parent, l, irqenable);  in _omap_mbox_enable_irq()
265 static void _omap_mbox_disable_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq)  in _omap_mbox_disable_irq()  argument
268 				&mbox->tx_fifo : &mbox->rx_fifo;  in _omap_mbox_disable_irq()
276 	if (!mbox->intr_type)  in _omap_mbox_disable_irq()
277 		bit = mbox_read_reg(mbox->parent, irqdisable) & ~bit;  in _omap_mbox_disable_irq()
279 	mbox_write_reg(mbox->parent, bit, irqdisable);  in _omap_mbox_disable_irq()
284 	struct omap_mbox *mbox = mbox_chan_to_omap_mbox(chan);  in omap_mbox_enable_irq()  local
286 	if (WARN_ON(!mbox))  in omap_mbox_enable_irq()
289 	_omap_mbox_enable_irq(mbox, irq);  in omap_mbox_enable_irq()
295 	struct omap_mbox *mbox = mbox_chan_to_omap_mbox(chan);  in omap_mbox_disable_irq()  local
297 	if (WARN_ON(!mbox))  in omap_mbox_disable_irq()
300 	_omap_mbox_disable_irq(mbox, irq);  in omap_mbox_disable_irq()
318 		mbox_chan_received_data(mq->mbox->chan, (void *)msg);  in mbox_rx_work()
322 			_omap_mbox_enable_irq(mq->mbox, IRQ_RX);  in mbox_rx_work()
331 static void __mbox_tx_interrupt(struct omap_mbox *mbox)  in __mbox_tx_interrupt()  argument
333 	_omap_mbox_disable_irq(mbox, IRQ_TX);  in __mbox_tx_interrupt()
334 	ack_mbox_irq(mbox, IRQ_TX);  in __mbox_tx_interrupt()
335 	mbox_chan_txdone(mbox->chan, 0);  in __mbox_tx_interrupt()
338 static void __mbox_rx_interrupt(struct omap_mbox *mbox)  in __mbox_rx_interrupt()  argument
340 	struct omap_mbox_queue *mq = mbox->rxq;  in __mbox_rx_interrupt()
344 	while (!mbox_fifo_empty(mbox)) {  in __mbox_rx_interrupt()
346 			_omap_mbox_disable_irq(mbox, IRQ_RX);  in __mbox_rx_interrupt()
351 		msg = mbox_fifo_read(mbox);  in __mbox_rx_interrupt()
358 	ack_mbox_irq(mbox, IRQ_RX);  in __mbox_rx_interrupt()
360 	schedule_work(&mbox->rxq->work);  in __mbox_rx_interrupt()
365 	struct omap_mbox *mbox = p;  in mbox_interrupt()  local
367 	if (is_mbox_irq(mbox, IRQ_TX))  in mbox_interrupt()
368 		__mbox_tx_interrupt(mbox);  in mbox_interrupt()
370 	if (is_mbox_irq(mbox, IRQ_RX))  in mbox_interrupt()
371 		__mbox_rx_interrupt(mbox);  in mbox_interrupt()
376 static struct omap_mbox_queue *mbox_queue_alloc(struct omap_mbox *mbox,  in mbox_queue_alloc()  argument
407 static int omap_mbox_startup(struct omap_mbox *mbox)  in omap_mbox_startup()  argument
412 	mq = mbox_queue_alloc(mbox, mbox_rx_work);  in omap_mbox_startup()
415 	mbox->rxq = mq;  in omap_mbox_startup()
416 	mq->mbox = mbox;  in omap_mbox_startup()
418 	ret = request_irq(mbox->irq, mbox_interrupt, IRQF_SHARED,  in omap_mbox_startup()
419 			  mbox->name, mbox);  in omap_mbox_startup()
425 	if (mbox->send_no_irq)  in omap_mbox_startup()
426 		mbox->chan->txdone_method = TXDONE_BY_ACK;  in omap_mbox_startup()
428 	_omap_mbox_enable_irq(mbox, IRQ_RX);  in omap_mbox_startup()
433 	mbox_queue_free(mbox->rxq);  in omap_mbox_startup()
437 static void omap_mbox_fini(struct omap_mbox *mbox)  in omap_mbox_fini()  argument
439 	_omap_mbox_disable_irq(mbox, IRQ_RX);  in omap_mbox_fini()
440 	free_irq(mbox->irq, mbox);  in omap_mbox_fini()
441 	flush_work(&mbox->rxq->work);  in omap_mbox_fini()
442 	mbox_queue_free(mbox->rxq);  in omap_mbox_fini()
448 	struct omap_mbox *_mbox, *mbox = NULL;  in omap_mbox_device_find()  local
457 			mbox = _mbox;  in omap_mbox_device_find()
461 	return mbox;  in omap_mbox_device_find()
468 	struct omap_mbox *mbox = NULL;  in omap_mbox_request_channel()  local
485 		mbox = omap_mbox_device_find(mdev, chan_name);  in omap_mbox_request_channel()
486 		if (mbox)  in omap_mbox_request_channel()
491 	if (!mbox || !mbox->chan)  in omap_mbox_request_channel()
494 	chan = mbox->chan;  in omap_mbox_request_channel()
503 	ret = chan->mbox->ops->startup(chan);  in omap_mbox_request_channel()
527 		struct omap_mbox *mbox = mboxes[i];  in omap_mbox_register()  local
528 		mbox->dev = device_create(&omap_mbox_class, mdev->dev,  in omap_mbox_register()
529 					0, mbox, "%s", mbox->name);  in omap_mbox_register()
530 		if (IS_ERR(mbox->dev)) {  in omap_mbox_register()
531 			ret = PTR_ERR(mbox->dev);  in omap_mbox_register()
572 	struct omap_mbox *mbox = mbox_chan_to_omap_mbox(chan);  in omap_mbox_chan_startup()  local
573 	struct omap_mbox_device *mdev = mbox->parent;  in omap_mbox_chan_startup()
578 	ret = omap_mbox_startup(mbox);  in omap_mbox_chan_startup()
587 	struct omap_mbox *mbox = mbox_chan_to_omap_mbox(chan);  in omap_mbox_chan_shutdown()  local
588 	struct omap_mbox_device *mdev = mbox->parent;  in omap_mbox_chan_shutdown()
591 	omap_mbox_fini(mbox);  in omap_mbox_chan_shutdown()
596 static int omap_mbox_chan_send_noirq(struct omap_mbox *mbox, void *data)  in omap_mbox_chan_send_noirq()  argument
600 	if (!mbox_fifo_full(mbox)) {  in omap_mbox_chan_send_noirq()
601 		_omap_mbox_enable_irq(mbox, IRQ_RX);  in omap_mbox_chan_send_noirq()
602 		mbox_fifo_write(mbox, (mbox_msg_t)data);  in omap_mbox_chan_send_noirq()
604 		_omap_mbox_disable_irq(mbox, IRQ_RX);  in omap_mbox_chan_send_noirq()
607 		mbox_fifo_read(mbox);  in omap_mbox_chan_send_noirq()
608 		ack_mbox_irq(mbox, IRQ_RX);  in omap_mbox_chan_send_noirq()
614 static int omap_mbox_chan_send(struct omap_mbox *mbox, void *data)  in omap_mbox_chan_send()  argument
618 	if (!mbox_fifo_full(mbox)) {  in omap_mbox_chan_send()
619 		mbox_fifo_write(mbox, (mbox_msg_t)data);  in omap_mbox_chan_send()
624 	_omap_mbox_enable_irq(mbox, IRQ_TX);  in omap_mbox_chan_send()
630 	struct omap_mbox *mbox = mbox_chan_to_omap_mbox(chan);  in omap_mbox_chan_send_data()  local
633 	if (!mbox)  in omap_mbox_chan_send_data()
636 	if (mbox->send_no_irq)  in omap_mbox_chan_send_data()
637 		ret = omap_mbox_chan_send_noirq(mbox, data);  in omap_mbox_chan_send_data()
639 		ret = omap_mbox_chan_send(mbox, data);  in omap_mbox_chan_send_data()
675 	struct omap_mbox *mbox;  in omap_mbox_of_xlate()  local
688 	mbox = omap_mbox_device_find(mdev, node->name);  in omap_mbox_of_xlate()
690 	return mbox ? mbox->chan : ERR_PTR(-ENOENT);  in omap_mbox_of_xlate()
698 	struct omap_mbox **list, *mbox, *mboxblk;  in omap_mbox_probe()  local
810 	mboxblk = devm_kzalloc(&pdev->dev, info_count * sizeof(*mbox),  in omap_mbox_probe()
815 	mbox = mboxblk;  in omap_mbox_probe()
818 		fifo = &mbox->tx_fifo;  in omap_mbox_probe()
826 		fifo = &mbox->rx_fifo;  in omap_mbox_probe()
834 		mbox->send_no_irq = finfo->send_no_irq;  in omap_mbox_probe()
835 		mbox->intr_type = intr_type;  in omap_mbox_probe()
837 		mbox->parent = mdev;  in omap_mbox_probe()
838 		mbox->name = finfo->name;  in omap_mbox_probe()
839 		mbox->irq = platform_get_irq(pdev, finfo->tx_irq);  in omap_mbox_probe()
840 		if (mbox->irq < 0)  in omap_mbox_probe()
841 			return mbox->irq;  in omap_mbox_probe()
842 		mbox->chan = &chnls[i];  in omap_mbox_probe()
843 		chnls[i].con_priv = mbox;  in omap_mbox_probe()
844 		list[i] = mbox++;  in omap_mbox_probe()