Lines Matching +full:spi +full:- +full:rx +full:- +full:bus +full:- +full:width
2 * SPI bus via the Blackfin SPORT peripheral
6 * Copyright 2009-2011 Analog Devices Inc.
8 * Licensed under the GPL-2 or later.
22 #include <linux/spi/spi.h>
31 #define DRV_NAME "bfin-sport-spi"
32 #define DRV_DESC "SPI bus via the Blackfin SPORT"
37 MODULE_ALIAS("platform:bfin-sport-spi");
58 /* SPI framework hookup */
61 /* Regs base of SPI controller */
91 void *rx; member
113 bfin_write_or(&drv_data->regs->tcr1, TSPEN); in bfin_sport_spi_enable()
114 bfin_write_or(&drv_data->regs->rcr1, TSPEN); in bfin_sport_spi_enable()
121 bfin_write_and(&drv_data->regs->tcr1, ~TSPEN); in bfin_sport_spi_disable()
122 bfin_write_and(&drv_data->regs->rcr1, ~TSPEN); in bfin_sport_spi_disable()
131 int div = (sclk / (2 * speed_hz)) - 1; in bfin_sport_hz_to_spi_baud()
148 gpio_direction_output(chip->cs_gpio, 0); in bfin_sport_spi_cs_active()
154 gpio_direction_output(chip->cs_gpio, 1); in bfin_sport_spi_cs_deactive()
156 if (chip->cs_chg_udelay) in bfin_sport_spi_cs_deactive()
157 udelay(chip->cs_chg_udelay); in bfin_sport_spi_cs_deactive()
164 while (!(bfin_read(&drv_data->regs->stat) & RXNE)) { in bfin_sport_spi_stat_poll_complete()
175 while (drv_data->tx < drv_data->tx_end) { in bfin_sport_spi_u8_writer()
176 bfin_write(&drv_data->regs->tx16, *drv_data->tx8++); in bfin_sport_spi_u8_writer()
178 dummy = bfin_read(&drv_data->regs->rx16); in bfin_sport_spi_u8_writer()
185 u16 tx_val = drv_data->cur_chip->idle_tx_val; in bfin_sport_spi_u8_reader()
187 while (drv_data->rx < drv_data->rx_end) { in bfin_sport_spi_u8_reader()
188 bfin_write(&drv_data->regs->tx16, tx_val); in bfin_sport_spi_u8_reader()
190 *drv_data->rx8++ = bfin_read(&drv_data->regs->rx16); in bfin_sport_spi_u8_reader()
197 while (drv_data->rx < drv_data->rx_end) { in bfin_sport_spi_u8_duplex()
198 bfin_write(&drv_data->regs->tx16, *drv_data->tx8++); in bfin_sport_spi_u8_duplex()
200 *drv_data->rx8++ = bfin_read(&drv_data->regs->rx16); in bfin_sport_spi_u8_duplex()
215 while (drv_data->tx < drv_data->tx_end) { in bfin_sport_spi_u16_writer()
216 bfin_write(&drv_data->regs->tx16, *drv_data->tx16++); in bfin_sport_spi_u16_writer()
218 dummy = bfin_read(&drv_data->regs->rx16); in bfin_sport_spi_u16_writer()
225 u16 tx_val = drv_data->cur_chip->idle_tx_val; in bfin_sport_spi_u16_reader()
227 while (drv_data->rx < drv_data->rx_end) { in bfin_sport_spi_u16_reader()
228 bfin_write(&drv_data->regs->tx16, tx_val); in bfin_sport_spi_u16_reader()
230 *drv_data->rx16++ = bfin_read(&drv_data->regs->rx16); in bfin_sport_spi_u16_reader()
237 while (drv_data->rx < drv_data->rx_end) { in bfin_sport_spi_u16_duplex()
238 bfin_write(&drv_data->regs->tx16, *drv_data->tx16++); in bfin_sport_spi_u16_duplex()
240 *drv_data->rx16++ = bfin_read(&drv_data->regs->rx16); in bfin_sport_spi_u16_duplex()
250 /* stop controller and re-config current chip */
254 struct bfin_sport_spi_slave_data *chip = drv_data->cur_chip; in bfin_sport_spi_restore_state()
255 unsigned int bits = (drv_data->ops == &bfin_sport_transfer_ops_u8 ? 7 : 15); in bfin_sport_spi_restore_state()
258 dev_dbg(drv_data->dev, "restoring spi ctl state\n"); in bfin_sport_spi_restore_state()
260 bfin_write(&drv_data->regs->tcr1, chip->ctl_reg); in bfin_sport_spi_restore_state()
261 bfin_write(&drv_data->regs->tcr2, bits); in bfin_sport_spi_restore_state()
262 bfin_write(&drv_data->regs->tclkdiv, chip->baud); in bfin_sport_spi_restore_state()
263 bfin_write(&drv_data->regs->tfsdiv, bits); in bfin_sport_spi_restore_state()
266 bfin_write(&drv_data->regs->rcr1, chip->ctl_reg & ~(ITCLK | ITFS)); in bfin_sport_spi_restore_state()
267 bfin_write(&drv_data->regs->rcr2, bits); in bfin_sport_spi_restore_state()
277 struct spi_message *msg = drv_data->cur_msg; in bfin_sport_spi_next_transfer()
278 struct spi_transfer *trans = drv_data->cur_transfer; in bfin_sport_spi_next_transfer()
281 if (trans->transfer_list.next != &msg->transfers) { in bfin_sport_spi_next_transfer()
282 drv_data->cur_transfer = in bfin_sport_spi_next_transfer()
283 list_entry(trans->transfer_list.next, in bfin_sport_spi_next_transfer()
292 * caller already set message->status;
298 struct bfin_sport_spi_slave_data *chip = drv_data->cur_chip; in bfin_sport_spi_giveback()
302 spin_lock_irqsave(&drv_data->lock, flags); in bfin_sport_spi_giveback()
303 msg = drv_data->cur_msg; in bfin_sport_spi_giveback()
304 drv_data->state = START_STATE; in bfin_sport_spi_giveback()
305 drv_data->cur_msg = NULL; in bfin_sport_spi_giveback()
306 drv_data->cur_transfer = NULL; in bfin_sport_spi_giveback()
307 drv_data->cur_chip = NULL; in bfin_sport_spi_giveback()
308 queue_work(drv_data->workqueue, &drv_data->pump_messages); in bfin_sport_spi_giveback()
309 spin_unlock_irqrestore(&drv_data->lock, flags); in bfin_sport_spi_giveback()
311 if (!drv_data->cs_change) in bfin_sport_spi_giveback()
314 if (msg->complete) in bfin_sport_spi_giveback()
315 msg->complete(msg->context); in bfin_sport_spi_giveback()
324 dev_dbg(drv_data->dev, "%s enter\n", __func__); in sport_err_handler()
325 status = bfin_read(&drv_data->regs->stat) & (TOVF | TUVF | ROVF | RUVF); in sport_err_handler()
328 bfin_write(&drv_data->regs->stat, status); in sport_err_handler()
332 dev_err(drv_data->dev, "status error:%s%s%s%s\n", in sport_err_handler()
356 message = drv_data->cur_msg; in bfin_sport_spi_pump_transfers()
357 transfer = drv_data->cur_transfer; in bfin_sport_spi_pump_transfers()
358 chip = drv_data->cur_chip; in bfin_sport_spi_pump_transfers()
360 if (transfer->speed_hz) in bfin_sport_spi_pump_transfers()
361 transfer_speed = bfin_sport_hz_to_spi_baud(transfer->speed_hz); in bfin_sport_spi_pump_transfers()
363 transfer_speed = chip->baud; in bfin_sport_spi_pump_transfers()
364 bfin_write(&drv_data->regs->tclkdiv, transfer_speed); in bfin_sport_spi_pump_transfers()
372 if (drv_data->state == ERROR_STATE) { in bfin_sport_spi_pump_transfers()
373 dev_dbg(drv_data->dev, "transfer: we've hit an error\n"); in bfin_sport_spi_pump_transfers()
374 message->status = -EIO; in bfin_sport_spi_pump_transfers()
380 if (drv_data->state == DONE_STATE) { in bfin_sport_spi_pump_transfers()
381 dev_dbg(drv_data->dev, "transfer: all done!\n"); in bfin_sport_spi_pump_transfers()
382 message->status = 0; in bfin_sport_spi_pump_transfers()
388 if (drv_data->state == RUNNING_STATE) { in bfin_sport_spi_pump_transfers()
389 dev_dbg(drv_data->dev, "transfer: still running ...\n"); in bfin_sport_spi_pump_transfers()
390 previous = list_entry(transfer->transfer_list.prev, in bfin_sport_spi_pump_transfers()
392 if (previous->delay_usecs) in bfin_sport_spi_pump_transfers()
393 udelay(previous->delay_usecs); in bfin_sport_spi_pump_transfers()
396 if (transfer->len == 0) { in bfin_sport_spi_pump_transfers()
398 drv_data->state = bfin_sport_spi_next_transfer(drv_data); in bfin_sport_spi_pump_transfers()
400 tasklet_schedule(&drv_data->pump_transfers); in bfin_sport_spi_pump_transfers()
403 if (transfer->tx_buf != NULL) { in bfin_sport_spi_pump_transfers()
404 drv_data->tx = (void *)transfer->tx_buf; in bfin_sport_spi_pump_transfers()
405 drv_data->tx_end = drv_data->tx + transfer->len; in bfin_sport_spi_pump_transfers()
406 dev_dbg(drv_data->dev, "tx_buf is %p, tx_end is %p\n", in bfin_sport_spi_pump_transfers()
407 transfer->tx_buf, drv_data->tx_end); in bfin_sport_spi_pump_transfers()
409 drv_data->tx = NULL; in bfin_sport_spi_pump_transfers()
411 if (transfer->rx_buf != NULL) { in bfin_sport_spi_pump_transfers()
412 full_duplex = transfer->tx_buf != NULL; in bfin_sport_spi_pump_transfers()
413 drv_data->rx = transfer->rx_buf; in bfin_sport_spi_pump_transfers()
414 drv_data->rx_end = drv_data->rx + transfer->len; in bfin_sport_spi_pump_transfers()
415 dev_dbg(drv_data->dev, "rx_buf is %p, rx_end is %p\n", in bfin_sport_spi_pump_transfers()
416 transfer->rx_buf, drv_data->rx_end); in bfin_sport_spi_pump_transfers()
418 drv_data->rx = NULL; in bfin_sport_spi_pump_transfers()
420 drv_data->cs_change = transfer->cs_change; in bfin_sport_spi_pump_transfers()
423 bits_per_word = transfer->bits_per_word ? : message->spi->bits_per_word; in bfin_sport_spi_pump_transfers()
425 drv_data->ops = &bfin_sport_transfer_ops_u8; in bfin_sport_spi_pump_transfers()
427 drv_data->ops = &bfin_sport_transfer_ops_u16; in bfin_sport_spi_pump_transfers()
429 drv_data->state = RUNNING_STATE; in bfin_sport_spi_pump_transfers()
431 if (drv_data->cs_change) in bfin_sport_spi_pump_transfers()
434 dev_dbg(drv_data->dev, in bfin_sport_spi_pump_transfers()
435 "now pumping a transfer: width is %d, len is %d\n", in bfin_sport_spi_pump_transfers()
436 bits_per_word, transfer->len); in bfin_sport_spi_pump_transfers()
439 dev_dbg(drv_data->dev, "doing IO transfer\n"); in bfin_sport_spi_pump_transfers()
444 BUG_ON((drv_data->tx_end - drv_data->tx) != in bfin_sport_spi_pump_transfers()
445 (drv_data->rx_end - drv_data->rx)); in bfin_sport_spi_pump_transfers()
446 drv_data->ops->duplex(drv_data); in bfin_sport_spi_pump_transfers()
448 if (drv_data->tx != drv_data->tx_end) in bfin_sport_spi_pump_transfers()
450 } else if (drv_data->tx != NULL) { in bfin_sport_spi_pump_transfers()
453 drv_data->ops->write(drv_data); in bfin_sport_spi_pump_transfers()
455 if (drv_data->tx != drv_data->tx_end) in bfin_sport_spi_pump_transfers()
457 } else if (drv_data->rx != NULL) { in bfin_sport_spi_pump_transfers()
460 drv_data->ops->read(drv_data); in bfin_sport_spi_pump_transfers()
461 if (drv_data->rx != drv_data->rx_end) in bfin_sport_spi_pump_transfers()
467 dev_dbg(drv_data->dev, "IO write error!\n"); in bfin_sport_spi_pump_transfers()
468 drv_data->state = ERROR_STATE; in bfin_sport_spi_pump_transfers()
471 message->actual_length += transfer->len; in bfin_sport_spi_pump_transfers()
473 drv_data->state = bfin_sport_spi_next_transfer(drv_data); in bfin_sport_spi_pump_transfers()
474 if (drv_data->cs_change) in bfin_sport_spi_pump_transfers()
479 tasklet_schedule(&drv_data->pump_transfers); in bfin_sport_spi_pump_transfers()
493 spin_lock_irqsave(&drv_data->lock, flags); in bfin_sport_spi_pump_messages()
494 if (list_empty(&drv_data->queue) || !drv_data->run) { in bfin_sport_spi_pump_messages()
496 drv_data->busy = 0; in bfin_sport_spi_pump_messages()
497 spin_unlock_irqrestore(&drv_data->lock, flags); in bfin_sport_spi_pump_messages()
502 if (drv_data->cur_msg) { in bfin_sport_spi_pump_messages()
503 spin_unlock_irqrestore(&drv_data->lock, flags); in bfin_sport_spi_pump_messages()
508 next_msg = list_entry(drv_data->queue.next, in bfin_sport_spi_pump_messages()
511 drv_data->cur_msg = next_msg; in bfin_sport_spi_pump_messages()
514 drv_data->cur_chip = spi_get_ctldata(drv_data->cur_msg->spi); in bfin_sport_spi_pump_messages()
516 list_del_init(&drv_data->cur_msg->queue); in bfin_sport_spi_pump_messages()
519 drv_data->cur_msg->state = START_STATE; in bfin_sport_spi_pump_messages()
520 drv_data->cur_transfer = list_entry(drv_data->cur_msg->transfers.next, in bfin_sport_spi_pump_messages()
523 dev_dbg(drv_data->dev, "got a message to pump, " in bfin_sport_spi_pump_messages()
525 drv_data->cur_chip->baud, drv_data->cur_chip->cs_gpio, in bfin_sport_spi_pump_messages()
526 drv_data->cur_chip->ctl_reg); in bfin_sport_spi_pump_messages()
528 dev_dbg(drv_data->dev, in bfin_sport_spi_pump_messages()
530 drv_data->cur_transfer->len); in bfin_sport_spi_pump_messages()
533 tasklet_schedule(&drv_data->pump_transfers); in bfin_sport_spi_pump_messages()
535 drv_data->busy = 1; in bfin_sport_spi_pump_messages()
536 spin_unlock_irqrestore(&drv_data->lock, flags); in bfin_sport_spi_pump_messages()
540 * got a msg to transfer, queue it in drv_data->queue.
544 bfin_sport_spi_transfer(struct spi_device *spi, struct spi_message *msg) in bfin_sport_spi_transfer() argument
546 struct bfin_sport_spi_master_data *drv_data = spi_master_get_devdata(spi->master); in bfin_sport_spi_transfer()
549 spin_lock_irqsave(&drv_data->lock, flags); in bfin_sport_spi_transfer()
551 if (!drv_data->run) { in bfin_sport_spi_transfer()
552 spin_unlock_irqrestore(&drv_data->lock, flags); in bfin_sport_spi_transfer()
553 return -ESHUTDOWN; in bfin_sport_spi_transfer()
556 msg->actual_length = 0; in bfin_sport_spi_transfer()
557 msg->status = -EINPROGRESS; in bfin_sport_spi_transfer()
558 msg->state = START_STATE; in bfin_sport_spi_transfer()
560 dev_dbg(&spi->dev, "adding an msg in transfer()\n"); in bfin_sport_spi_transfer()
561 list_add_tail(&msg->queue, &drv_data->queue); in bfin_sport_spi_transfer()
563 if (drv_data->run && !drv_data->busy) in bfin_sport_spi_transfer()
564 queue_work(drv_data->workqueue, &drv_data->pump_messages); in bfin_sport_spi_transfer()
566 spin_unlock_irqrestore(&drv_data->lock, flags); in bfin_sport_spi_transfer()
571 /* Called every time common spi devices change state */
573 bfin_sport_spi_setup(struct spi_device *spi) in bfin_sport_spi_setup() argument
579 chip = spi_get_ctldata(spi); in bfin_sport_spi_setup()
585 return -ENOMEM; in bfin_sport_spi_setup()
588 chip_info = spi->controller_data; in bfin_sport_spi_setup()
594 if (chip_info->ctl_reg || chip_info->enable_dma) { in bfin_sport_spi_setup()
595 ret = -EINVAL; in bfin_sport_spi_setup()
596 dev_err(&spi->dev, "don't set ctl_reg/enable_dma fields"); in bfin_sport_spi_setup()
599 chip->cs_chg_udelay = chip_info->cs_chg_udelay; in bfin_sport_spi_setup()
600 chip->idle_tx_val = chip_info->idle_tx_val; in bfin_sport_spi_setup()
601 spi->bits_per_word = chip_info->bits_per_word; in bfin_sport_spi_setup()
605 if (spi->bits_per_word != 8 && spi->bits_per_word != 16) { in bfin_sport_spi_setup()
606 ret = -EINVAL; in bfin_sport_spi_setup()
610 /* translate common spi framework into our register in bfin_sport_spi_setup()
611 * following configure contents are same for tx and rx. in bfin_sport_spi_setup()
614 if (spi->mode & SPI_CPHA) in bfin_sport_spi_setup()
615 chip->ctl_reg &= ~TCKFE; in bfin_sport_spi_setup()
617 chip->ctl_reg |= TCKFE; in bfin_sport_spi_setup()
619 if (spi->mode & SPI_LSB_FIRST) in bfin_sport_spi_setup()
620 chip->ctl_reg |= TLSBIT; in bfin_sport_spi_setup()
622 chip->ctl_reg &= ~TLSBIT; in bfin_sport_spi_setup()
625 chip->ctl_reg |= ITCLK | ITFS | TFSR | LATFS | LTFS; in bfin_sport_spi_setup()
627 chip->baud = bfin_sport_hz_to_spi_baud(spi->max_speed_hz); in bfin_sport_spi_setup()
629 chip->cs_gpio = spi->chip_select; in bfin_sport_spi_setup()
630 ret = gpio_request(chip->cs_gpio, spi->modalias); in bfin_sport_spi_setup()
634 dev_dbg(&spi->dev, "setup spi chip %s, width is %d\n", in bfin_sport_spi_setup()
635 spi->modalias, spi->bits_per_word); in bfin_sport_spi_setup()
636 dev_dbg(&spi->dev, "ctl_reg is 0x%x, GPIO is %i\n", in bfin_sport_spi_setup()
637 chip->ctl_reg, spi->chip_select); in bfin_sport_spi_setup()
639 spi_set_ctldata(spi, chip); in bfin_sport_spi_setup()
651 * callback for spi framework.
655 bfin_sport_spi_cleanup(struct spi_device *spi) in bfin_sport_spi_cleanup() argument
657 struct bfin_sport_spi_slave_data *chip = spi_get_ctldata(spi); in bfin_sport_spi_cleanup()
662 gpio_free(chip->cs_gpio); in bfin_sport_spi_cleanup()
670 INIT_LIST_HEAD(&drv_data->queue); in bfin_sport_spi_init_queue()
671 spin_lock_init(&drv_data->lock); in bfin_sport_spi_init_queue()
673 drv_data->run = false; in bfin_sport_spi_init_queue()
674 drv_data->busy = 0; in bfin_sport_spi_init_queue()
677 tasklet_init(&drv_data->pump_transfers, in bfin_sport_spi_init_queue()
681 INIT_WORK(&drv_data->pump_messages, bfin_sport_spi_pump_messages); in bfin_sport_spi_init_queue()
682 drv_data->workqueue = in bfin_sport_spi_init_queue()
683 create_singlethread_workqueue(dev_name(drv_data->master->dev.parent)); in bfin_sport_spi_init_queue()
684 if (drv_data->workqueue == NULL) in bfin_sport_spi_init_queue()
685 return -EBUSY; in bfin_sport_spi_init_queue()
695 spin_lock_irqsave(&drv_data->lock, flags); in bfin_sport_spi_start_queue()
697 if (drv_data->run || drv_data->busy) { in bfin_sport_spi_start_queue()
698 spin_unlock_irqrestore(&drv_data->lock, flags); in bfin_sport_spi_start_queue()
699 return -EBUSY; in bfin_sport_spi_start_queue()
702 drv_data->run = true; in bfin_sport_spi_start_queue()
703 drv_data->cur_msg = NULL; in bfin_sport_spi_start_queue()
704 drv_data->cur_transfer = NULL; in bfin_sport_spi_start_queue()
705 drv_data->cur_chip = NULL; in bfin_sport_spi_start_queue()
706 spin_unlock_irqrestore(&drv_data->lock, flags); in bfin_sport_spi_start_queue()
708 queue_work(drv_data->workqueue, &drv_data->pump_messages); in bfin_sport_spi_start_queue()
720 spin_lock_irqsave(&drv_data->lock, flags); in bfin_sport_spi_stop_queue()
724 * A wait_queue on the drv_data->busy could be used, but then the common in bfin_sport_spi_stop_queue()
726 * friends on every SPI message. Do this instead in bfin_sport_spi_stop_queue()
728 drv_data->run = false; in bfin_sport_spi_stop_queue()
729 while (!list_empty(&drv_data->queue) && drv_data->busy && limit--) { in bfin_sport_spi_stop_queue()
730 spin_unlock_irqrestore(&drv_data->lock, flags); in bfin_sport_spi_stop_queue()
732 spin_lock_irqsave(&drv_data->lock, flags); in bfin_sport_spi_stop_queue()
735 if (!list_empty(&drv_data->queue) || drv_data->busy) in bfin_sport_spi_stop_queue()
736 status = -EBUSY; in bfin_sport_spi_stop_queue()
738 spin_unlock_irqrestore(&drv_data->lock, flags); in bfin_sport_spi_stop_queue()
752 destroy_workqueue(drv_data->workqueue); in bfin_sport_spi_destroy_queue()
760 struct device *dev = &pdev->dev; in bfin_sport_spi_probe()
767 platform_info = dev->platform_data; in bfin_sport_spi_probe()
773 return -ENOMEM; in bfin_sport_spi_probe()
777 drv_data->master = master; in bfin_sport_spi_probe()
778 drv_data->dev = dev; in bfin_sport_spi_probe()
779 drv_data->pin_req = platform_info->pin_req; in bfin_sport_spi_probe()
781 master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST; in bfin_sport_spi_probe()
782 master->bus_num = pdev->id; in bfin_sport_spi_probe()
783 master->num_chipselect = platform_info->num_chipselect; in bfin_sport_spi_probe()
784 master->cleanup = bfin_sport_spi_cleanup; in bfin_sport_spi_probe()
785 master->setup = bfin_sport_spi_setup; in bfin_sport_spi_probe()
786 master->transfer = bfin_sport_spi_transfer; in bfin_sport_spi_probe()
792 status = -ENOENT; in bfin_sport_spi_probe()
796 drv_data->regs = ioremap(res->start, resource_size(res)); in bfin_sport_spi_probe()
797 if (drv_data->regs == NULL) { in bfin_sport_spi_probe()
799 status = -ENXIO; in bfin_sport_spi_probe()
806 status = -ENODEV; in bfin_sport_spi_probe()
809 drv_data->err_irq = ires->start; in bfin_sport_spi_probe()
824 status = request_irq(drv_data->err_irq, sport_err_handler, in bfin_sport_spi_probe()
831 status = peripheral_request_list(drv_data->pin_req, DRV_NAME); in bfin_sport_spi_probe()
837 /* Register with the SPI framework */ in bfin_sport_spi_probe()
841 dev_err(dev, "problem registering spi master\n"); in bfin_sport_spi_probe()
845 dev_info(dev, "%s, regs_base@%p\n", DRV_DESC, drv_data->regs); in bfin_sport_spi_probe()
849 peripheral_free_list(drv_data->pin_req); in bfin_sport_spi_probe()
851 free_irq(drv_data->err_irq, drv_data); in bfin_sport_spi_probe()
856 iounmap(drv_data->regs); in bfin_sport_spi_probe()
882 /* Disconnect from the SPI framework */ in bfin_sport_spi_remove()
883 spi_unregister_master(drv_data->master); in bfin_sport_spi_remove()
885 peripheral_free_list(drv_data->pin_req); in bfin_sport_spi_remove()
916 /* Enable the SPI interface */ in bfin_sport_spi_resume()
922 dev_err(drv_data->dev, "problem resuming queue\n"); in bfin_sport_spi_resume()