2 * linux/drivers/net/irda/pxaficp_ir.c
4 * Based on sa1100_ir.c by Russell King
6 * Changes copyright (C) 2003-2005 MontaVista Software, Inc.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
12 * Infra-red driver (SIR/FIR) for the PXA2xx embedded microprocessor
15 #include <linux/module.h>
16 #include <linux/netdevice.h>
17 #include <linux/platform_device.h>
18 #include <linux/clk.h>
20 #include <net/irda/irda.h>
21 #include <net/irda/irmod.h>
22 #include <net/irda/wrapper.h>
23 #include <net/irda/irda_device.h>
26 #include <mach/irda.h>
27 #include <mach/regs-uart.h>
28 #include <mach/regs-ost.h>
30 #define FICP __REG(0x40800000) /* Start of FICP area */
31 #define ICCR0 __REG(0x40800000) /* ICP Control Register 0 */
32 #define ICCR1 __REG(0x40800004) /* ICP Control Register 1 */
33 #define ICCR2 __REG(0x40800008) /* ICP Control Register 2 */
34 #define ICDR __REG(0x4080000c) /* ICP Data Register */
35 #define ICSR0 __REG(0x40800014) /* ICP Status Register 0 */
36 #define ICSR1 __REG(0x40800018) /* ICP Status Register 1 */
38 #define ICCR0_AME (1 << 7) /* Address match enable */
39 #define ICCR0_TIE (1 << 6) /* Transmit FIFO interrupt enable */
40 #define ICCR0_RIE (1 << 5) /* Recieve FIFO interrupt enable */
41 #define ICCR0_RXE (1 << 4) /* Receive enable */
42 #define ICCR0_TXE (1 << 3) /* Transmit enable */
43 #define ICCR0_TUS (1 << 2) /* Transmit FIFO underrun select */
44 #define ICCR0_LBM (1 << 1) /* Loopback mode */
45 #define ICCR0_ITR (1 << 0) /* IrDA transmission */
47 #define ICCR2_RXP (1 << 3) /* Receive Pin Polarity select */
48 #define ICCR2_TXP (1 << 2) /* Transmit Pin Polarity select */
49 #define ICCR2_TRIG (3 << 0) /* Receive FIFO Trigger threshold */
50 #define ICCR2_TRIG_8 (0 << 0) /* >= 8 bytes */
51 #define ICCR2_TRIG_16 (1 << 0) /* >= 16 bytes */
52 #define ICCR2_TRIG_32 (2 << 0) /* >= 32 bytes */
55 #define ICSR0_EOC (1 << 6) /* DMA End of Descriptor Chain */
57 #define ICSR0_FRE (1 << 5) /* Framing error */
58 #define ICSR0_RFS (1 << 4) /* Receive FIFO service request */
59 #define ICSR0_TFS (1 << 3) /* Transnit FIFO service request */
60 #define ICSR0_RAB (1 << 2) /* Receiver abort */
61 #define ICSR0_TUR (1 << 1) /* Trunsmit FIFO underun */
62 #define ICSR0_EIF (1 << 0) /* End/Error in FIFO */
64 #define ICSR1_ROR (1 << 6) /* Receiver FIFO underrun */
65 #define ICSR1_CRE (1 << 5) /* CRC error */
66 #define ICSR1_EOF (1 << 4) /* End of frame */
67 #define ICSR1_TNF (1 << 3) /* Transmit FIFO not full */
68 #define ICSR1_RNE (1 << 2) /* Receive FIFO not empty */
69 #define ICSR1_TBY (1 << 1) /* Tramsmiter busy flag */
70 #define ICSR1_RSY (1 << 0) /* Recevier synchronized flag */
72 #define IrSR_RXPL_NEG_IS_ZERO (1<<4)
73 #define IrSR_RXPL_POS_IS_ZERO 0x0
74 #define IrSR_TXPL_NEG_IS_ZERO (1<<3)
75 #define IrSR_TXPL_POS_IS_ZERO 0x0
76 #define IrSR_XMODE_PULSE_1_6 (1<<2)
77 #define IrSR_XMODE_PULSE_3_16 0x0
78 #define IrSR_RCVEIR_IR_MODE (1<<1)
79 #define IrSR_RCVEIR_UART_MODE 0x0
80 #define IrSR_XMITIR_IR_MODE (1<<0)
81 #define IrSR_XMITIR_UART_MODE 0x0
83 #define IrSR_IR_RECEIVE_ON (\
84 IrSR_RXPL_NEG_IS_ZERO | \
85 IrSR_TXPL_POS_IS_ZERO | \
86 IrSR_XMODE_PULSE_3_16 | \
87 IrSR_RCVEIR_IR_MODE | \
88 IrSR_XMITIR_UART_MODE)
90 #define IrSR_IR_TRANSMIT_ON (\
91 IrSR_RXPL_NEG_IS_ZERO | \
92 IrSR_TXPL_POS_IS_ZERO | \
93 IrSR_XMODE_PULSE_3_16 | \
94 IrSR_RCVEIR_UART_MODE | \
100 unsigned long last_oscr;
102 unsigned char *dma_rx_buff;
103 unsigned char *dma_tx_buff;
104 dma_addr_t dma_rx_buff_phy;
105 dma_addr_t dma_tx_buff_phy;
106 unsigned int dma_tx_buff_len;
110 struct irlap_cb *irlap;
117 struct pxaficp_platform_data *pdata;
123 static inline void pxa_irda_disable_clk(struct pxa_irda *si)
126 clk_disable(si->cur_clk);
130 static inline void pxa_irda_enable_firclk(struct pxa_irda *si)
132 si->cur_clk = si->fir_clk;
133 clk_enable(si->fir_clk);
136 static inline void pxa_irda_enable_sirclk(struct pxa_irda *si)
138 si->cur_clk = si->sir_clk;
139 clk_enable(si->sir_clk);
143 #define IS_FIR(si) ((si)->speed >= 4000000)
144 #define IRDA_FRAME_SIZE_LIMIT 2047
146 inline static void pxa_irda_fir_dma_rx_start(struct pxa_irda *si)
148 DCSR(si->rxdma) = DCSR_NODESC;
149 DSADR(si->rxdma) = __PREG(ICDR);
150 DTADR(si->rxdma) = si->dma_rx_buff_phy;
151 DCMD(si->rxdma) = DCMD_INCTRGADDR | DCMD_FLOWSRC | DCMD_WIDTH1 | DCMD_BURST32 | IRDA_FRAME_SIZE_LIMIT;
152 DCSR(si->rxdma) |= DCSR_RUN;
155 inline static void pxa_irda_fir_dma_tx_start(struct pxa_irda *si)
157 DCSR(si->txdma) = DCSR_NODESC;
158 DSADR(si->txdma) = si->dma_tx_buff_phy;
159 DTADR(si->txdma) = __PREG(ICDR);
160 DCMD(si->txdma) = DCMD_INCSRCADDR | DCMD_FLOWTRG | DCMD_ENDIRQEN | DCMD_WIDTH1 | DCMD_BURST32 | si->dma_tx_buff_len;
161 DCSR(si->txdma) |= DCSR_RUN;
165 * Set the IrDA communications speed.
167 static int pxa_irda_set_speed(struct pxa_irda *si, int speed)
170 unsigned int divisor;
173 case 9600: case 19200: case 38400:
174 case 57600: case 115200:
176 /* refer to PXA250/210 Developer's Manual 10-7 */
177 /* BaudRate = 14.7456 MHz / (16*Divisor) */
178 divisor = 14745600 / (16 * speed);
180 local_irq_save(flags);
184 DCSR(si->rxdma) &= ~DCSR_RUN;
187 pxa_irda_disable_clk(si);
189 /* set board transceiver to SIR mode */
190 si->pdata->transceiver_mode(si->dev, IR_SIRMODE);
192 /* enable the STUART clock */
193 pxa_irda_enable_sirclk(si);
196 /* disable STUART first */
199 /* access DLL & DLH */
201 STDLL = divisor & 0xff;
202 STDLH = divisor >> 8;
206 STISR = IrSR_IR_RECEIVE_ON | IrSR_XMODE_PULSE_1_6;
207 STIER = IER_UUE | IER_RLSE | IER_RAVIE | IER_RTIOE;
209 local_irq_restore(flags);
213 local_irq_save(flags);
218 pxa_irda_disable_clk(si);
220 /* disable FICP first */
223 /* set board transceiver to FIR mode */
224 si->pdata->transceiver_mode(si->dev, IR_FIRMODE);
226 /* enable the FICP clock */
227 pxa_irda_enable_firclk(si);
230 pxa_irda_fir_dma_rx_start(si);
231 ICCR0 = ICCR0_ITR | ICCR0_RXE;
233 local_irq_restore(flags);
243 /* SIR interrupt service routine. */
244 static irqreturn_t pxa_irda_sir_irq(int irq, void *dev_id)
246 struct net_device *dev = dev_id;
247 struct pxa_irda *si = netdev_priv(dev);
252 switch (iir & 0x0F) {
253 case 0x06: /* Receiver Line Status */
255 while (lsr & LSR_FIFOE) {
257 if (lsr & (LSR_OE | LSR_PE | LSR_FE | LSR_BI)) {
258 printk(KERN_DEBUG "pxa_ir: sir receiving error\n");
259 dev->stats.rx_errors++;
261 dev->stats.rx_frame_errors++;
263 dev->stats.rx_fifo_errors++;
265 dev->stats.rx_bytes++;
266 async_unwrap_char(dev, &dev->stats,
271 si->last_oscr = OSCR;
274 case 0x04: /* Received Data Available */
277 case 0x0C: /* Character Timeout Indication */
279 dev->stats.rx_bytes++;
280 async_unwrap_char(dev, &dev->stats, &si->rx_buff, STRBR);
281 } while (STLSR & LSR_DR);
282 si->last_oscr = OSCR;
285 case 0x02: /* Transmit FIFO Data Request */
286 while ((si->tx_buff.len) && (STLSR & LSR_TDRQ)) {
287 STTHR = *si->tx_buff.data++;
288 si->tx_buff.len -= 1;
291 if (si->tx_buff.len == 0) {
292 dev->stats.tx_packets++;
293 dev->stats.tx_bytes += si->tx_buff.data - si->tx_buff.head;
295 /* We need to ensure that the transmitter has finished. */
296 while ((STLSR & LSR_TEMT) == 0)
298 si->last_oscr = OSCR;
301 * Ok, we've finished transmitting. Now enable
302 * the receiver. Sometimes we get a receive IRQ
303 * immediately after a transmit...
306 pxa_irda_set_speed(si, si->newspeed);
309 /* enable IR Receiver, disable IR Transmitter */
310 STISR = IrSR_IR_RECEIVE_ON | IrSR_XMODE_PULSE_1_6;
311 /* enable STUART and receive interrupts */
312 STIER = IER_UUE | IER_RLSE | IER_RAVIE | IER_RTIOE;
315 netif_wake_queue(dev);
323 /* FIR Receive DMA interrupt handler */
324 static void pxa_irda_fir_dma_rx_irq(int channel, void *data)
326 int dcsr = DCSR(channel);
328 DCSR(channel) = dcsr & ~DCSR_RUN;
330 printk(KERN_DEBUG "pxa_ir: fir rx dma bus error %#x\n", dcsr);
333 /* FIR Transmit DMA interrupt handler */
334 static void pxa_irda_fir_dma_tx_irq(int channel, void *data)
336 struct net_device *dev = data;
337 struct pxa_irda *si = netdev_priv(dev);
340 dcsr = DCSR(channel);
341 DCSR(channel) = dcsr & ~DCSR_RUN;
343 if (dcsr & DCSR_ENDINTR) {
344 dev->stats.tx_packets++;
345 dev->stats.tx_bytes += si->dma_tx_buff_len;
347 dev->stats.tx_errors++;
350 while (ICSR1 & ICSR1_TBY)
352 si->last_oscr = OSCR;
355 * HACK: It looks like the TBY bit is dropped too soon.
356 * Without this delay things break.
361 pxa_irda_set_speed(si, si->newspeed);
367 pxa_irda_fir_dma_rx_start(si);
368 while ((ICSR1 & ICSR1_RNE) && i--)
370 ICCR0 = ICCR0_ITR | ICCR0_RXE;
373 printk(KERN_ERR "pxa_ir: cannot clear Rx FIFO!\n");
375 netif_wake_queue(dev);
378 /* EIF(Error in FIFO/End in Frame) handler for FIR */
379 static void pxa_irda_fir_irq_eif(struct pxa_irda *si, struct net_device *dev, int icsr0)
381 unsigned int len, stat, data;
383 /* Get the current data position. */
384 len = DTADR(si->rxdma) - si->dma_rx_buff_phy;
387 /* Read Status, and then Data. */
392 if (stat & (ICSR1_CRE | ICSR1_ROR)) {
393 dev->stats.rx_errors++;
394 if (stat & ICSR1_CRE) {
395 printk(KERN_DEBUG "pxa_ir: fir receive CRC error\n");
396 dev->stats.rx_crc_errors++;
398 if (stat & ICSR1_ROR) {
399 printk(KERN_DEBUG "pxa_ir: fir receive overrun\n");
400 dev->stats.rx_over_errors++;
403 si->dma_rx_buff[len++] = data;
405 /* If we hit the end of frame, there's no point in continuing. */
406 if (stat & ICSR1_EOF)
408 } while (ICSR0 & ICSR0_EIF);
410 if (stat & ICSR1_EOF) {
414 if (icsr0 & ICSR0_FRE) {
415 printk(KERN_ERR "pxa_ir: dropping erroneous frame\n");
416 dev->stats.rx_dropped++;
420 skb = alloc_skb(len+1,GFP_ATOMIC);
422 printk(KERN_ERR "pxa_ir: fir out of memory for receive skb\n");
423 dev->stats.rx_dropped++;
427 /* Align IP header to 20 bytes */
429 skb_copy_to_linear_data(skb, si->dma_rx_buff, len);
432 /* Feed it to IrLAP */
434 skb_reset_mac_header(skb);
435 skb->protocol = htons(ETH_P_IRDA);
438 dev->stats.rx_packets++;
439 dev->stats.rx_bytes += len;
443 /* FIR interrupt handler */
444 static irqreturn_t pxa_irda_fir_irq(int irq, void *dev_id)
446 struct net_device *dev = dev_id;
447 struct pxa_irda *si = netdev_priv(dev);
451 DCSR(si->rxdma) &= ~DCSR_RUN;
452 si->last_oscr = OSCR;
455 if (icsr0 & (ICSR0_FRE | ICSR0_RAB)) {
456 if (icsr0 & ICSR0_FRE) {
457 printk(KERN_DEBUG "pxa_ir: fir receive frame error\n");
458 dev->stats.rx_frame_errors++;
460 printk(KERN_DEBUG "pxa_ir: fir receive abort\n");
461 dev->stats.rx_errors++;
463 ICSR0 = icsr0 & (ICSR0_FRE | ICSR0_RAB);
466 if (icsr0 & ICSR0_EIF) {
467 /* An error in FIFO occured, or there is a end of frame */
468 pxa_irda_fir_irq_eif(si, dev, icsr0);
472 pxa_irda_fir_dma_rx_start(si);
473 while ((ICSR1 & ICSR1_RNE) && i--)
475 ICCR0 = ICCR0_ITR | ICCR0_RXE;
478 printk(KERN_ERR "pxa_ir: cannot clear Rx FIFO!\n");
483 /* hard_xmit interface of irda device */
484 static int pxa_irda_hard_xmit(struct sk_buff *skb, struct net_device *dev)
486 struct pxa_irda *si = netdev_priv(dev);
487 int speed = irda_get_next_speed(skb);
490 * Does this packet contain a request to change the interface
491 * speed? If so, remember it until we complete the transmission
494 if (speed != si->speed && speed != -1)
495 si->newspeed = speed;
498 * If this is an empty frame, we can bypass a lot.
503 pxa_irda_set_speed(si, speed);
509 netif_stop_queue(dev);
512 si->tx_buff.data = si->tx_buff.head;
513 si->tx_buff.len = async_wrap_skb(skb, si->tx_buff.data, si->tx_buff.truesize);
515 /* Disable STUART interrupts and switch to transmit mode. */
517 STISR = IrSR_IR_TRANSMIT_ON | IrSR_XMODE_PULSE_1_6;
519 /* enable STUART and transmit interrupts */
520 STIER = IER_UUE | IER_TIE;
522 unsigned long mtt = irda_get_mtt(skb);
524 si->dma_tx_buff_len = skb->len;
525 skb_copy_from_linear_data(skb, si->dma_tx_buff, skb->len);
528 while ((unsigned)(OSCR - si->last_oscr)/4 < mtt)
531 /* stop RX DMA, disable FICP */
532 DCSR(si->rxdma) &= ~DCSR_RUN;
535 pxa_irda_fir_dma_tx_start(si);
536 ICCR0 = ICCR0_ITR | ICCR0_TXE;
540 dev->trans_start = jiffies;
544 static int pxa_irda_ioctl(struct net_device *dev, struct ifreq *ifreq, int cmd)
546 struct if_irda_req *rq = (struct if_irda_req *)ifreq;
547 struct pxa_irda *si = netdev_priv(dev);
553 if (capable(CAP_NET_ADMIN)) {
555 * We are unable to set the speed if the
556 * device is not running.
558 if (netif_running(dev)) {
559 ret = pxa_irda_set_speed(si,
562 printk(KERN_INFO "pxa_ir: SIOCSBANDWIDTH: !netif_running\n");
570 if (capable(CAP_NET_ADMIN)) {
571 irda_device_set_media_busy(dev, TRUE);
578 rq->ifr_receiving = IS_FIR(si) ? 0
579 : si->rx_buff.state != OUTSIDE_FRAME;
590 static void pxa_irda_startup(struct pxa_irda *si)
592 /* Disable STUART interrupts */
594 /* enable STUART interrupt to the processor */
596 /* configure SIR frame format: StartBit - Data 7 ... Data 0 - Stop Bit */
597 STLCR = LCR_WLS0 | LCR_WLS1;
598 /* enable FIFO, we use FIFO to improve performance */
599 STFCR = FCR_TRFIFOE | FCR_ITL_32;
603 /* configure FICP ICCR2 */
604 ICCR2 = ICCR2_TXP | ICCR2_TRIG_32;
607 DRCMR(17) = si->rxdma | DRCMR_MAPVLD;
608 DRCMR(18) = si->txdma | DRCMR_MAPVLD;
610 /* force SIR reinitialization */
612 pxa_irda_set_speed(si, 9600);
614 printk(KERN_DEBUG "pxa_ir: irda startup\n");
617 static void pxa_irda_shutdown(struct pxa_irda *si)
621 local_irq_save(flags);
623 /* disable STUART and interrupt */
625 /* disable STUART SIR mode */
629 DCSR(si->txdma) &= ~DCSR_RUN;
630 DCSR(si->rxdma) &= ~DCSR_RUN;
634 /* disable the STUART or FICP clocks */
635 pxa_irda_disable_clk(si);
640 local_irq_restore(flags);
642 /* power off board transceiver */
643 si->pdata->transceiver_mode(si->dev, IR_OFF);
645 printk(KERN_DEBUG "pxa_ir: irda shutdown\n");
648 static int pxa_irda_start(struct net_device *dev)
650 struct pxa_irda *si = netdev_priv(dev);
655 err = request_irq(IRQ_STUART, pxa_irda_sir_irq, 0, dev->name, dev);
659 err = request_irq(IRQ_ICP, pxa_irda_fir_irq, 0, dev->name, dev);
664 * The interrupt must remain disabled for now.
666 disable_irq(IRQ_STUART);
667 disable_irq(IRQ_ICP);
670 si->rxdma = pxa_request_dma("FICP_RX",DMA_PRIO_LOW, pxa_irda_fir_dma_rx_irq, dev);
674 si->txdma = pxa_request_dma("FICP_TX",DMA_PRIO_LOW, pxa_irda_fir_dma_tx_irq, dev);
679 si->dma_rx_buff = dma_alloc_coherent(si->dev, IRDA_FRAME_SIZE_LIMIT,
680 &si->dma_rx_buff_phy, GFP_KERNEL );
681 if (!si->dma_rx_buff)
682 goto err_dma_rx_buff;
684 si->dma_tx_buff = dma_alloc_coherent(si->dev, IRDA_FRAME_SIZE_LIMIT,
685 &si->dma_tx_buff_phy, GFP_KERNEL );
686 if (!si->dma_tx_buff)
687 goto err_dma_tx_buff;
689 /* Setup the serial port for the initial speed. */
690 pxa_irda_startup(si);
693 * Open a new IrLAP layer instance.
695 si->irlap = irlap_open(dev, &si->qos, "pxa");
701 * Now enable the interrupt and start the queue
703 enable_irq(IRQ_STUART);
705 netif_start_queue(dev);
707 printk(KERN_DEBUG "pxa_ir: irda driver opened\n");
712 pxa_irda_shutdown(si);
713 dma_free_coherent(si->dev, IRDA_FRAME_SIZE_LIMIT, si->dma_tx_buff, si->dma_tx_buff_phy);
715 dma_free_coherent(si->dev, IRDA_FRAME_SIZE_LIMIT, si->dma_rx_buff, si->dma_rx_buff_phy);
717 pxa_free_dma(si->txdma);
719 pxa_free_dma(si->rxdma);
721 free_irq(IRQ_ICP, dev);
723 free_irq(IRQ_STUART, dev);
729 static int pxa_irda_stop(struct net_device *dev)
731 struct pxa_irda *si = netdev_priv(dev);
733 netif_stop_queue(dev);
735 pxa_irda_shutdown(si);
739 irlap_close(si->irlap);
743 free_irq(IRQ_STUART, dev);
744 free_irq(IRQ_ICP, dev);
746 pxa_free_dma(si->rxdma);
747 pxa_free_dma(si->txdma);
750 dma_free_coherent(si->dev, IRDA_FRAME_SIZE_LIMIT, si->dma_tx_buff, si->dma_tx_buff_phy);
752 dma_free_coherent(si->dev, IRDA_FRAME_SIZE_LIMIT, si->dma_rx_buff, si->dma_rx_buff_phy);
754 printk(KERN_DEBUG "pxa_ir: irda driver closed\n");
758 static int pxa_irda_suspend(struct platform_device *_dev, pm_message_t state)
760 struct net_device *dev = platform_get_drvdata(_dev);
763 if (dev && netif_running(dev)) {
764 si = netdev_priv(dev);
765 netif_device_detach(dev);
766 pxa_irda_shutdown(si);
772 static int pxa_irda_resume(struct platform_device *_dev)
774 struct net_device *dev = platform_get_drvdata(_dev);
777 if (dev && netif_running(dev)) {
778 si = netdev_priv(dev);
779 pxa_irda_startup(si);
780 netif_device_attach(dev);
781 netif_wake_queue(dev);
788 static int pxa_irda_init_iobuf(iobuff_t *io, int size)
790 io->head = kmalloc(size, GFP_KERNEL | GFP_DMA);
791 if (io->head != NULL) {
793 io->in_frame = FALSE;
794 io->state = OUTSIDE_FRAME;
797 return io->head ? 0 : -ENOMEM;
800 static int pxa_irda_probe(struct platform_device *pdev)
802 struct net_device *dev;
804 unsigned int baudrate_mask;
807 if (!pdev->dev.platform_data)
810 err = request_mem_region(__PREG(STUART), 0x24, "IrDA") ? 0 : -EBUSY;
814 err = request_mem_region(__PREG(FICP), 0x1c, "IrDA") ? 0 : -EBUSY;
818 dev = alloc_irdadev(sizeof(struct pxa_irda));
822 si = netdev_priv(dev);
823 si->dev = &pdev->dev;
824 si->pdata = pdev->dev.platform_data;
826 si->sir_clk = clk_get(&pdev->dev, "UARTCLK");
827 si->fir_clk = clk_get(&pdev->dev, "FICPCLK");
828 if (IS_ERR(si->sir_clk) || IS_ERR(si->fir_clk)) {
829 err = PTR_ERR(IS_ERR(si->sir_clk) ? si->sir_clk : si->fir_clk);
834 * Initialise the SIR buffers
836 err = pxa_irda_init_iobuf(&si->rx_buff, 14384);
839 err = pxa_irda_init_iobuf(&si->tx_buff, 4000);
843 if (si->pdata->startup)
844 err = si->pdata->startup(si->dev);
848 dev->hard_start_xmit = pxa_irda_hard_xmit;
849 dev->open = pxa_irda_start;
850 dev->stop = pxa_irda_stop;
851 dev->do_ioctl = pxa_irda_ioctl;
853 irda_init_max_qos_capabilies(&si->qos);
856 if (si->pdata->transceiver_cap & IR_SIRMODE)
857 baudrate_mask |= IR_9600|IR_19200|IR_38400|IR_57600|IR_115200;
858 if (si->pdata->transceiver_cap & IR_FIRMODE)
859 baudrate_mask |= IR_4000000 << 8;
861 si->qos.baud_rate.bits &= baudrate_mask;
862 si->qos.min_turn_time.bits = 7; /* 1ms or more */
864 irda_qos_bits_to_value(&si->qos);
866 err = register_netdev(dev);
869 dev_set_drvdata(&pdev->dev, dev);
872 if (si->pdata->shutdown)
873 si->pdata->shutdown(si->dev);
875 kfree(si->tx_buff.head);
877 kfree(si->rx_buff.head);
879 if (si->sir_clk && !IS_ERR(si->sir_clk))
880 clk_put(si->sir_clk);
881 if (si->fir_clk && !IS_ERR(si->fir_clk))
882 clk_put(si->fir_clk);
885 release_mem_region(__PREG(FICP), 0x1c);
887 release_mem_region(__PREG(STUART), 0x24);
893 static int pxa_irda_remove(struct platform_device *_dev)
895 struct net_device *dev = platform_get_drvdata(_dev);
898 struct pxa_irda *si = netdev_priv(dev);
899 unregister_netdev(dev);
900 if (si->pdata->shutdown)
901 si->pdata->shutdown(si->dev);
902 kfree(si->tx_buff.head);
903 kfree(si->rx_buff.head);
904 clk_put(si->fir_clk);
905 clk_put(si->sir_clk);
909 release_mem_region(__PREG(STUART), 0x24);
910 release_mem_region(__PREG(FICP), 0x1c);
915 static struct platform_driver pxa_ir_driver = {
918 .owner = THIS_MODULE,
920 .probe = pxa_irda_probe,
921 .remove = pxa_irda_remove,
922 .suspend = pxa_irda_suspend,
923 .resume = pxa_irda_resume,
926 static int __init pxa_irda_init(void)
928 return platform_driver_register(&pxa_ir_driver);
931 static void __exit pxa_irda_exit(void)
933 platform_driver_unregister(&pxa_ir_driver);
936 module_init(pxa_irda_init);
937 module_exit(pxa_irda_exit);
939 MODULE_LICENSE("GPL");
940 MODULE_ALIAS("platform:pxa2xx-ir");