127 static void sh_sir_write(struct sh_sir_self *self, u32 offset, u16 data)  in sh_sir_write()  argument
129 	iowrite16(data, self->membase + offset);  in sh_sir_write()
132 static u16 sh_sir_read(struct sh_sir_self *self, u32 offset)  in sh_sir_read()  argument
134 	return ioread16(self->membase + offset);  in sh_sir_read()
137 static void sh_sir_update_bits(struct sh_sir_self *self, u32 offset,  in sh_sir_update_bits()  argument
142 	old = sh_sir_read(self, offset);  in sh_sir_update_bits()
145 		sh_sir_write(self, offset, new);  in sh_sir_update_bits()
155 static void sh_sir_crc_reset(struct sh_sir_self *self)  in sh_sir_crc_reset()  argument
157 	sh_sir_write(self, IRIF_CRC0, CRC_RST);  in sh_sir_crc_reset()
160 static void sh_sir_crc_add(struct sh_sir_self *self, u8 data)  in sh_sir_crc_add()  argument
162 	sh_sir_write(self, IRIF_CRC1, (u16)data);  in sh_sir_crc_add()
165 static u16 sh_sir_crc_cnt(struct sh_sir_self *self)  in sh_sir_crc_cnt()  argument
167 	return CRC_CT_MASK & sh_sir_read(self, IRIF_CRC0);  in sh_sir_crc_cnt()
170 static u16 sh_sir_crc_out(struct sh_sir_self *self)  in sh_sir_crc_out()  argument
172 	return sh_sir_read(self, IRIF_CRC4);  in sh_sir_crc_out()
175 static int sh_sir_crc_init(struct sh_sir_self *self)  in sh_sir_crc_init()  argument
177 	struct device *dev = &self->ndev->dev;  in sh_sir_crc_init()
181 	sh_sir_crc_reset(self);  in sh_sir_crc_init()
183 	sh_sir_crc_add(self, 0xCC);  in sh_sir_crc_init()
184 	sh_sir_crc_add(self, 0xF5);  in sh_sir_crc_init()
185 	sh_sir_crc_add(self, 0xF1);  in sh_sir_crc_init()
186 	sh_sir_crc_add(self, 0xA7);  in sh_sir_crc_init()
188 	val = sh_sir_crc_cnt(self);  in sh_sir_crc_init()
194 	val = sh_sir_crc_out(self);  in sh_sir_crc_init()
204 	sh_sir_crc_reset(self);  in sh_sir_crc_init()
247 static int sh_sir_set_baudrate(struct sh_sir_self *self, u32 baudrate)  in sh_sir_set_baudrate()  argument
250 	struct device *dev = &self->ndev->dev;  in sh_sir_set_baudrate()
328 	sh_sir_write(self, IRIF_SIR0, IRTPW | IRERRC);  in sh_sir_set_baudrate()
329 	sh_sir_write(self, IRIF_SIR1, irbca);  in sh_sir_set_baudrate()
330 	sh_sir_write(self, IRIF_SIR2, irbc);  in sh_sir_set_baudrate()
368 	sh_sir_write(self, IRIF_UART6, uabca);  in sh_sir_set_baudrate()
369 	sh_sir_write(self, IRIF_UART7, uabc);  in sh_sir_set_baudrate()
395 static void sh_sir_remove_iobuf(struct sh_sir_self *self)  in sh_sir_remove_iobuf()  argument
397 	kfree(self->rx_buff.head);  in sh_sir_remove_iobuf()
398 	kfree(self->tx_buff.head);  in sh_sir_remove_iobuf()
400 	self->rx_buff.head = NULL;  in sh_sir_remove_iobuf()
401 	self->tx_buff.head = NULL;  in sh_sir_remove_iobuf()
404 static int sh_sir_init_iobuf(struct sh_sir_self *self, int rxsize, int txsize)  in sh_sir_init_iobuf()  argument
408 	if (self->rx_buff.head ||  in sh_sir_init_iobuf()
409 	    self->tx_buff.head) {  in sh_sir_init_iobuf()
410 		dev_err(&self->ndev->dev, "iobuff has already existed.");  in sh_sir_init_iobuf()
414 	err = __sh_sir_init_iobuf(&self->rx_buff, rxsize);  in sh_sir_init_iobuf()
418 	err = __sh_sir_init_iobuf(&self->tx_buff, txsize);  in sh_sir_init_iobuf()
422 		sh_sir_remove_iobuf(self);  in sh_sir_init_iobuf()
434 static void sh_sir_clear_all_err(struct sh_sir_self *self)  in sh_sir_clear_all_err()  argument
437 	sh_sir_update_bits(self, IRIF_SIR0, IRERRC, IRERRC);  in sh_sir_clear_all_err()
440 	sh_sir_write(self, IRIF_SIR_FLG, 0xffff);  in sh_sir_clear_all_err()
443 	sh_sir_write(self, IRIF_UART_STS2, 0);  in sh_sir_clear_all_err()
446 static void sh_sir_set_phase(struct sh_sir_self *self, int phase)  in sh_sir_set_phase()  argument
468 	sh_sir_write(self, IRIF_UART5, uart5);  in sh_sir_set_phase()
469 	sh_sir_write(self, IRIF_UART0, uart0);  in sh_sir_set_phase()
472 static int sh_sir_is_which_phase(struct sh_sir_self *self)  in sh_sir_is_which_phase()  argument
474 	u16 val = sh_sir_read(self, IRIF_UART5);  in sh_sir_is_which_phase()
488 static void sh_sir_tx(struct sh_sir_self *self, int phase)  in sh_sir_tx()  argument
492 		if (0 >= self->tx_buff.len) {  in sh_sir_tx()
493 			sh_sir_set_phase(self, TX_COMP_PHASE);  in sh_sir_tx()
495 			sh_sir_write(self, IRIF_UART3, self->tx_buff.data[0]);  in sh_sir_tx()
496 			self->tx_buff.len--;  in sh_sir_tx()
497 			self->tx_buff.data++;  in sh_sir_tx()
501 		sh_sir_set_phase(self, RX_PHASE);  in sh_sir_tx()
502 		netif_wake_queue(self->ndev);  in sh_sir_tx()
505 		dev_err(&self->ndev->dev, "should not happen\n");  in sh_sir_tx()
510 static int sh_sir_read_data(struct sh_sir_self *self)  in sh_sir_read_data()  argument
516 		val = sh_sir_read(self, IRIF_UART1);  in sh_sir_read_data()
523 			return (int)sh_sir_read(self, IRIF_UART4);  in sh_sir_read_data()
529 	dev_err(&self->ndev->dev, "UART1 %04x : STATUS %04x\n",  in sh_sir_read_data()
530 		val, sh_sir_read(self, IRIF_UART_STS2));  in sh_sir_read_data()
533 	sh_sir_read(self, IRIF_UART4);  in sh_sir_read_data()
538 static void sh_sir_rx(struct sh_sir_self *self)  in sh_sir_rx()  argument
544 		data = sh_sir_read_data(self);  in sh_sir_rx()
548 		async_unwrap_char(self->ndev, &self->ndev->stats,  in sh_sir_rx()
549 				  &self->rx_buff, (u8)data);  in sh_sir_rx()
550 		self->ndev->last_rx = jiffies;  in sh_sir_rx()
552 		if (EOFD & sh_sir_read(self, IRIF_SIR_FRM))  in sh_sir_rx()
561 	struct sh_sir_self *self = dev_id;  in sh_sir_irq()  local
562 	struct device *dev = &self->ndev->dev;  in sh_sir_irq()
563 	int phase = sh_sir_is_which_phase(self);  in sh_sir_irq()
568 		sh_sir_tx(self, phase);  in sh_sir_irq()
571 		if (sh_sir_read(self, IRIF_SIR3))  in sh_sir_irq()
574 		sh_sir_rx(self);  in sh_sir_irq()
575 		sh_sir_clear_all_err(self);  in sh_sir_irq()
593 	struct sh_sir_self *self = netdev_priv(ndev);  in sh_sir_hard_xmit()  local
604 	self->tx_buff.data = self->tx_buff.head;  in sh_sir_hard_xmit()
605 	self->tx_buff.len = 0;  in sh_sir_hard_xmit()
607 		self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data,  in sh_sir_hard_xmit()
608 						   self->tx_buff.truesize);  in sh_sir_hard_xmit()
610 	sh_sir_set_phase(self, TX_PHASE);  in sh_sir_hard_xmit()
629 	struct sh_sir_self *self = netdev_priv(ndev);  in sh_sir_stats()  local
631 	return &self->ndev->stats;  in sh_sir_stats()
636 	struct sh_sir_self *self = netdev_priv(ndev);  in sh_sir_open()  local
639 	clk_enable(self->clk);  in sh_sir_open()
640 	err = sh_sir_crc_init(self);  in sh_sir_open()
644 	sh_sir_set_baudrate(self, 9600);  in sh_sir_open()
646 	self->irlap = irlap_open(ndev, &self->qos, DRIVER_NAME);  in sh_sir_open()
647 	if (!self->irlap) {  in sh_sir_open()
655 	sh_sir_update_bits(self, IRIF_SIR_FRM, FRP, FRP);  in sh_sir_open()
656 	sh_sir_read(self, IRIF_UART1); /* flag clear */  in sh_sir_open()
657 	sh_sir_read(self, IRIF_UART4); /* flag clear */  in sh_sir_open()
658 	sh_sir_set_phase(self, RX_PHASE);  in sh_sir_open()
662 	dev_info(&self->ndev->dev, "opened\n");  in sh_sir_open()
667 	clk_disable(self->clk);  in sh_sir_open()
674 	struct sh_sir_self *self = netdev_priv(ndev);  in sh_sir_stop()  local
677 	if (self->irlap) {  in sh_sir_stop()
678 		irlap_close(self->irlap);  in sh_sir_stop()
679 		self->irlap = NULL;  in sh_sir_stop()
707 	struct sh_sir_self *self;  in sh_sir_probe()  local
720 	ndev = alloc_irdadev(sizeof(*self));  in sh_sir_probe()
724 	self = netdev_priv(ndev);  in sh_sir_probe()
725 	self->membase = ioremap_nocache(res->start, resource_size(res));  in sh_sir_probe()
726 	if (!self->membase) {  in sh_sir_probe()
732 	err = sh_sir_init_iobuf(self, IRDA_SKB_MAX_MTU, IRDA_SIR_MAX_FRAME);  in sh_sir_probe()
737 	self->clk = clk_get(&pdev->dev, clk_name);  in sh_sir_probe()
738 	if (IS_ERR(self->clk)) {  in sh_sir_probe()
744 	irda_init_max_qos_capabilies(&self->qos);  in sh_sir_probe()
749 	self->ndev			= ndev;  in sh_sir_probe()
750 	self->qos.baud_rate.bits	&= IR_9600; /* FIXME */  in sh_sir_probe()
751 	self->qos.min_turn_time.bits	= 1; /* 10 ms or more */  in sh_sir_probe()
753 	irda_qos_bits_to_value(&self->qos);  in sh_sir_probe()
760 	err = devm_request_irq(&pdev->dev, irq, sh_sir_irq, 0, "sh_sir", self);  in sh_sir_probe()
771 	clk_put(self->clk);  in sh_sir_probe()
773 	sh_sir_remove_iobuf(self);  in sh_sir_probe()
775 	iounmap(self->membase);  in sh_sir_probe()
785 	struct sh_sir_self *self = netdev_priv(ndev);  in sh_sir_remove()  local
787 	if (!self)  in sh_sir_remove()
791 	clk_put(self->clk);  in sh_sir_remove()
792 	sh_sir_remove_iobuf(self);  in sh_sir_remove()
793 	iounmap(self->membase);  in sh_sir_remove()