Lines Matching refs:ctlr
123 struct spi_controller *ctlr = container_of(dev, \
125 return spi_statistics_##field##_show(&ctlr->statistics, buf); \
294 struct spi_controller *ctlr) in spi_statistics_add_transfer_stats() argument
309 (xfer->tx_buf != ctlr->dummy_tx)) in spi_statistics_add_transfer_stats()
312 (xfer->rx_buf != ctlr->dummy_rx)) in spi_statistics_add_transfer_stats()
501 struct spi_device *spi_alloc_device(struct spi_controller *ctlr) in spi_alloc_device() argument
505 if (!spi_controller_get(ctlr)) in spi_alloc_device()
510 spi_controller_put(ctlr); in spi_alloc_device()
514 spi->master = spi->controller = ctlr; in spi_alloc_device()
515 spi->dev.parent = &ctlr->dev; in spi_alloc_device()
519 spi->mode = ctlr->buswidth_override_bits; in spi_alloc_device()
563 struct spi_controller *ctlr = spi->controller; in spi_add_device() local
564 struct device *dev = ctlr->dev.parent; in spi_add_device()
568 if (spi->chip_select >= ctlr->num_chipselect) { in spi_add_device()
570 ctlr->num_chipselect); in spi_add_device()
592 !device_is_registered(&ctlr->dev)) { in spi_add_device()
598 if (ctlr->cs_gpiods) in spi_add_device()
599 spi->cs_gpiod = ctlr->cs_gpiods[spi->chip_select]; in spi_add_device()
600 else if (ctlr->cs_gpios) in spi_add_device()
601 spi->cs_gpio = ctlr->cs_gpios[spi->chip_select]; in spi_add_device()
642 struct spi_device *spi_new_device(struct spi_controller *ctlr, in spi_new_device() argument
655 proxy = spi_alloc_device(ctlr); in spi_new_device()
673 dev_err(&ctlr->dev, in spi_new_device()
717 static void spi_match_controller_to_boardinfo(struct spi_controller *ctlr, in spi_match_controller_to_boardinfo() argument
722 if (ctlr->bus_num != bi->bus_num) in spi_match_controller_to_boardinfo()
725 dev = spi_new_device(ctlr, bi); in spi_match_controller_to_boardinfo()
727 dev_err(ctlr->dev.parent, "can't create new device for %s\n", in spi_match_controller_to_boardinfo()
766 struct spi_controller *ctlr; in spi_register_board_info() local
778 list_for_each_entry(ctlr, &spi_controller_list, list) in spi_register_board_info()
779 spi_match_controller_to_boardinfo(ctlr, in spi_register_board_info()
842 int spi_map_buf(struct spi_controller *ctlr, struct device *dev, in spi_map_buf() argument
867 desc_len = min_t(int, max_seg_size, ctlr->max_dma_len); in spi_map_buf()
923 void spi_unmap_buf(struct spi_controller *ctlr, struct device *dev, in spi_unmap_buf() argument
932 static int __spi_map_msg(struct spi_controller *ctlr, struct spi_message *msg) in __spi_map_msg() argument
938 if (!ctlr->can_dma) in __spi_map_msg()
941 if (ctlr->dma_tx) in __spi_map_msg()
942 tx_dev = ctlr->dma_tx->device->dev; in __spi_map_msg()
944 tx_dev = ctlr->dev.parent; in __spi_map_msg()
946 if (ctlr->dma_rx) in __spi_map_msg()
947 rx_dev = ctlr->dma_rx->device->dev; in __spi_map_msg()
949 rx_dev = ctlr->dev.parent; in __spi_map_msg()
952 if (!ctlr->can_dma(ctlr, msg->spi, xfer)) in __spi_map_msg()
956 ret = spi_map_buf(ctlr, tx_dev, &xfer->tx_sg, in __spi_map_msg()
964 ret = spi_map_buf(ctlr, rx_dev, &xfer->rx_sg, in __spi_map_msg()
968 spi_unmap_buf(ctlr, tx_dev, &xfer->tx_sg, in __spi_map_msg()
975 ctlr->cur_msg_mapped = true; in __spi_map_msg()
980 static int __spi_unmap_msg(struct spi_controller *ctlr, struct spi_message *msg) in __spi_unmap_msg() argument
985 if (!ctlr->cur_msg_mapped || !ctlr->can_dma) in __spi_unmap_msg()
988 if (ctlr->dma_tx) in __spi_unmap_msg()
989 tx_dev = ctlr->dma_tx->device->dev; in __spi_unmap_msg()
991 tx_dev = ctlr->dev.parent; in __spi_unmap_msg()
993 if (ctlr->dma_rx) in __spi_unmap_msg()
994 rx_dev = ctlr->dma_rx->device->dev; in __spi_unmap_msg()
996 rx_dev = ctlr->dev.parent; in __spi_unmap_msg()
999 if (!ctlr->can_dma(ctlr, msg->spi, xfer)) in __spi_unmap_msg()
1002 spi_unmap_buf(ctlr, rx_dev, &xfer->rx_sg, DMA_FROM_DEVICE); in __spi_unmap_msg()
1003 spi_unmap_buf(ctlr, tx_dev, &xfer->tx_sg, DMA_TO_DEVICE); in __spi_unmap_msg()
1006 ctlr->cur_msg_mapped = false; in __spi_unmap_msg()
1011 static inline int __spi_map_msg(struct spi_controller *ctlr, in __spi_map_msg() argument
1017 static inline int __spi_unmap_msg(struct spi_controller *ctlr, in __spi_unmap_msg() argument
1024 static inline int spi_unmap_msg(struct spi_controller *ctlr, in spi_unmap_msg() argument
1034 if (xfer->tx_buf == ctlr->dummy_tx) in spi_unmap_msg()
1036 if (xfer->rx_buf == ctlr->dummy_rx) in spi_unmap_msg()
1040 return __spi_unmap_msg(ctlr, msg); in spi_unmap_msg()
1043 static int spi_map_msg(struct spi_controller *ctlr, struct spi_message *msg) in spi_map_msg() argument
1049 if ((ctlr->flags & (SPI_CONTROLLER_MUST_RX | SPI_CONTROLLER_MUST_TX)) in spi_map_msg()
1055 if ((ctlr->flags & SPI_CONTROLLER_MUST_TX) && in spi_map_msg()
1058 if ((ctlr->flags & SPI_CONTROLLER_MUST_RX) && in spi_map_msg()
1064 tmp = krealloc(ctlr->dummy_tx, max_tx, in spi_map_msg()
1068 ctlr->dummy_tx = tmp; in spi_map_msg()
1073 tmp = krealloc(ctlr->dummy_rx, max_rx, in spi_map_msg()
1077 ctlr->dummy_rx = tmp; in spi_map_msg()
1086 xfer->tx_buf = ctlr->dummy_tx; in spi_map_msg()
1088 xfer->rx_buf = ctlr->dummy_rx; in spi_map_msg()
1093 return __spi_map_msg(ctlr, msg); in spi_map_msg()
1096 static int spi_transfer_wait(struct spi_controller *ctlr, in spi_transfer_wait() argument
1100 struct spi_statistics *statm = &ctlr->statistics; in spi_transfer_wait()
1104 if (spi_controller_is_slave(ctlr)) { in spi_transfer_wait()
1105 if (wait_for_completion_interruptible(&ctlr->xfer_completion)) { in spi_transfer_wait()
1117 ms = wait_for_completion_timeout(&ctlr->xfer_completion, in spi_transfer_wait()
1232 static int spi_transfer_one_message(struct spi_controller *ctlr, in spi_transfer_one_message() argument
1238 struct spi_statistics *statm = &ctlr->statistics; in spi_transfer_one_message()
1249 spi_statistics_add_transfer_stats(statm, xfer, ctlr); in spi_transfer_one_message()
1250 spi_statistics_add_transfer_stats(stats, xfer, ctlr); in spi_transfer_one_message()
1252 if (!ctlr->ptp_sts_supported) { in spi_transfer_one_message()
1258 reinit_completion(&ctlr->xfer_completion); in spi_transfer_one_message()
1261 ret = ctlr->transfer_one(ctlr, msg->spi, xfer); in spi_transfer_one_message()
1263 if (ctlr->cur_msg_mapped && in spi_transfer_one_message()
1265 __spi_unmap_msg(ctlr, msg); in spi_transfer_one_message()
1266 ctlr->fallback = true; in spi_transfer_one_message()
1281 ret = spi_transfer_wait(ctlr, msg, xfer); in spi_transfer_one_message()
1292 if (!ctlr->ptp_sts_supported) { in spi_transfer_one_message()
1325 if (msg->status && ctlr->handle_err) in spi_transfer_one_message()
1326 ctlr->handle_err(ctlr, msg); in spi_transfer_one_message()
1328 spi_finalize_current_message(ctlr); in spi_transfer_one_message()
1341 void spi_finalize_current_transfer(struct spi_controller *ctlr) in spi_finalize_current_transfer() argument
1343 complete(&ctlr->xfer_completion); in spi_finalize_current_transfer()
1347 static void spi_idle_runtime_pm(struct spi_controller *ctlr) in spi_idle_runtime_pm() argument
1349 if (ctlr->auto_runtime_pm) { in spi_idle_runtime_pm()
1350 pm_runtime_mark_last_busy(ctlr->dev.parent); in spi_idle_runtime_pm()
1351 pm_runtime_put_autosuspend(ctlr->dev.parent); in spi_idle_runtime_pm()
1368 static void __spi_pump_messages(struct spi_controller *ctlr, bool in_kthread) in __spi_pump_messages() argument
1377 spin_lock_irqsave(&ctlr->queue_lock, flags); in __spi_pump_messages()
1380 if (ctlr->cur_msg) { in __spi_pump_messages()
1381 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1386 if (ctlr->idling) { in __spi_pump_messages()
1387 kthread_queue_work(ctlr->kworker, &ctlr->pump_messages); in __spi_pump_messages()
1388 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1393 if (list_empty(&ctlr->queue) || !ctlr->running) { in __spi_pump_messages()
1394 if (!ctlr->busy) { in __spi_pump_messages()
1395 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1401 if (!ctlr->dummy_rx && !ctlr->dummy_tx && in __spi_pump_messages()
1402 !ctlr->unprepare_transfer_hardware) { in __spi_pump_messages()
1403 spi_idle_runtime_pm(ctlr); in __spi_pump_messages()
1404 ctlr->busy = false; in __spi_pump_messages()
1405 trace_spi_controller_idle(ctlr); in __spi_pump_messages()
1407 kthread_queue_work(ctlr->kworker, in __spi_pump_messages()
1408 &ctlr->pump_messages); in __spi_pump_messages()
1410 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1414 ctlr->busy = false; in __spi_pump_messages()
1415 ctlr->idling = true; in __spi_pump_messages()
1416 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1418 kfree(ctlr->dummy_rx); in __spi_pump_messages()
1419 ctlr->dummy_rx = NULL; in __spi_pump_messages()
1420 kfree(ctlr->dummy_tx); in __spi_pump_messages()
1421 ctlr->dummy_tx = NULL; in __spi_pump_messages()
1422 if (ctlr->unprepare_transfer_hardware && in __spi_pump_messages()
1423 ctlr->unprepare_transfer_hardware(ctlr)) in __spi_pump_messages()
1424 dev_err(&ctlr->dev, in __spi_pump_messages()
1426 spi_idle_runtime_pm(ctlr); in __spi_pump_messages()
1427 trace_spi_controller_idle(ctlr); in __spi_pump_messages()
1429 spin_lock_irqsave(&ctlr->queue_lock, flags); in __spi_pump_messages()
1430 ctlr->idling = false; in __spi_pump_messages()
1431 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1436 msg = list_first_entry(&ctlr->queue, struct spi_message, queue); in __spi_pump_messages()
1437 ctlr->cur_msg = msg; in __spi_pump_messages()
1440 if (ctlr->busy) in __spi_pump_messages()
1443 ctlr->busy = true; in __spi_pump_messages()
1444 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1446 mutex_lock(&ctlr->io_mutex); in __spi_pump_messages()
1448 if (!was_busy && ctlr->auto_runtime_pm) { in __spi_pump_messages()
1449 ret = pm_runtime_get_sync(ctlr->dev.parent); in __spi_pump_messages()
1451 pm_runtime_put_noidle(ctlr->dev.parent); in __spi_pump_messages()
1452 dev_err(&ctlr->dev, "Failed to power device: %d\n", in __spi_pump_messages()
1454 mutex_unlock(&ctlr->io_mutex); in __spi_pump_messages()
1460 trace_spi_controller_busy(ctlr); in __spi_pump_messages()
1462 if (!was_busy && ctlr->prepare_transfer_hardware) { in __spi_pump_messages()
1463 ret = ctlr->prepare_transfer_hardware(ctlr); in __spi_pump_messages()
1465 dev_err(&ctlr->dev, in __spi_pump_messages()
1469 if (ctlr->auto_runtime_pm) in __spi_pump_messages()
1470 pm_runtime_put(ctlr->dev.parent); in __spi_pump_messages()
1473 spi_finalize_current_message(ctlr); in __spi_pump_messages()
1475 mutex_unlock(&ctlr->io_mutex); in __spi_pump_messages()
1482 if (ctlr->prepare_message) { in __spi_pump_messages()
1483 ret = ctlr->prepare_message(ctlr, msg); in __spi_pump_messages()
1485 dev_err(&ctlr->dev, "failed to prepare message: %d\n", in __spi_pump_messages()
1488 spi_finalize_current_message(ctlr); in __spi_pump_messages()
1491 ctlr->cur_msg_prepared = true; in __spi_pump_messages()
1494 ret = spi_map_msg(ctlr, msg); in __spi_pump_messages()
1497 spi_finalize_current_message(ctlr); in __spi_pump_messages()
1501 if (!ctlr->ptp_sts_supported && !ctlr->transfer_one) { in __spi_pump_messages()
1508 ret = ctlr->transfer_one_message(ctlr, msg); in __spi_pump_messages()
1510 dev_err(&ctlr->dev, in __spi_pump_messages()
1516 mutex_unlock(&ctlr->io_mutex); in __spi_pump_messages()
1529 struct spi_controller *ctlr = in spi_pump_messages() local
1532 __spi_pump_messages(ctlr, true); in spi_pump_messages()
1556 void spi_take_timestamp_pre(struct spi_controller *ctlr, in spi_take_timestamp_pre() argument
1573 local_irq_save(ctlr->irq_flags); in spi_take_timestamp_pre()
1593 void spi_take_timestamp_post(struct spi_controller *ctlr, in spi_take_timestamp_post() argument
1609 local_irq_restore(ctlr->irq_flags); in spi_take_timestamp_post()
1635 static void spi_set_thread_rt(struct spi_controller *ctlr) in spi_set_thread_rt() argument
1637 dev_info(&ctlr->dev, in spi_set_thread_rt()
1639 sched_set_fifo(ctlr->kworker->task); in spi_set_thread_rt()
1642 static int spi_init_queue(struct spi_controller *ctlr) in spi_init_queue() argument
1644 ctlr->running = false; in spi_init_queue()
1645 ctlr->busy = false; in spi_init_queue()
1647 ctlr->kworker = kthread_create_worker(0, dev_name(&ctlr->dev)); in spi_init_queue()
1648 if (IS_ERR(ctlr->kworker)) { in spi_init_queue()
1649 dev_err(&ctlr->dev, "failed to create message pump kworker\n"); in spi_init_queue()
1650 return PTR_ERR(ctlr->kworker); in spi_init_queue()
1653 kthread_init_work(&ctlr->pump_messages, spi_pump_messages); in spi_init_queue()
1662 if (ctlr->rt) in spi_init_queue()
1663 spi_set_thread_rt(ctlr); in spi_init_queue()
1678 struct spi_message *spi_get_next_queued_message(struct spi_controller *ctlr) in spi_get_next_queued_message() argument
1684 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_get_next_queued_message()
1685 next = list_first_entry_or_null(&ctlr->queue, struct spi_message, in spi_get_next_queued_message()
1687 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_get_next_queued_message()
1700 void spi_finalize_current_message(struct spi_controller *ctlr) in spi_finalize_current_message() argument
1707 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_finalize_current_message()
1708 mesg = ctlr->cur_msg; in spi_finalize_current_message()
1709 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_finalize_current_message()
1711 if (!ctlr->ptp_sts_supported && !ctlr->transfer_one) { in spi_finalize_current_message()
1718 if (unlikely(ctlr->ptp_sts_supported)) in spi_finalize_current_message()
1722 spi_unmap_msg(ctlr, mesg); in spi_finalize_current_message()
1729 spi_res_release(ctlr, mesg); in spi_finalize_current_message()
1731 if (ctlr->cur_msg_prepared && ctlr->unprepare_message) { in spi_finalize_current_message()
1732 ret = ctlr->unprepare_message(ctlr, mesg); in spi_finalize_current_message()
1734 dev_err(&ctlr->dev, "failed to unprepare message: %d\n", in spi_finalize_current_message()
1739 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_finalize_current_message()
1740 ctlr->cur_msg = NULL; in spi_finalize_current_message()
1741 ctlr->cur_msg_prepared = false; in spi_finalize_current_message()
1742 ctlr->fallback = false; in spi_finalize_current_message()
1743 kthread_queue_work(ctlr->kworker, &ctlr->pump_messages); in spi_finalize_current_message()
1744 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_finalize_current_message()
1754 static int spi_start_queue(struct spi_controller *ctlr) in spi_start_queue() argument
1758 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_start_queue()
1760 if (ctlr->running || ctlr->busy) { in spi_start_queue()
1761 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_start_queue()
1765 ctlr->running = true; in spi_start_queue()
1766 ctlr->cur_msg = NULL; in spi_start_queue()
1767 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_start_queue()
1769 kthread_queue_work(ctlr->kworker, &ctlr->pump_messages); in spi_start_queue()
1774 static int spi_stop_queue(struct spi_controller *ctlr) in spi_stop_queue() argument
1780 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_stop_queue()
1788 while ((!list_empty(&ctlr->queue) || ctlr->busy) && limit--) { in spi_stop_queue()
1789 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_stop_queue()
1791 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_stop_queue()
1794 if (!list_empty(&ctlr->queue) || ctlr->busy) in spi_stop_queue()
1797 ctlr->running = false; in spi_stop_queue()
1799 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_stop_queue()
1802 dev_warn(&ctlr->dev, "could not stop message queue\n"); in spi_stop_queue()
1808 static int spi_destroy_queue(struct spi_controller *ctlr) in spi_destroy_queue() argument
1812 ret = spi_stop_queue(ctlr); in spi_destroy_queue()
1821 dev_err(&ctlr->dev, "problem destroying queue\n"); in spi_destroy_queue()
1825 kthread_destroy_worker(ctlr->kworker); in spi_destroy_queue()
1834 struct spi_controller *ctlr = spi->controller; in __spi_queued_transfer() local
1837 spin_lock_irqsave(&ctlr->queue_lock, flags); in __spi_queued_transfer()
1839 if (!ctlr->running) { in __spi_queued_transfer()
1840 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_queued_transfer()
1846 list_add_tail(&msg->queue, &ctlr->queue); in __spi_queued_transfer()
1847 if (!ctlr->busy && need_pump) in __spi_queued_transfer()
1848 kthread_queue_work(ctlr->kworker, &ctlr->pump_messages); in __spi_queued_transfer()
1850 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_queued_transfer()
1866 static int spi_controller_initialize_queue(struct spi_controller *ctlr) in spi_controller_initialize_queue() argument
1870 ctlr->transfer = spi_queued_transfer; in spi_controller_initialize_queue()
1871 if (!ctlr->transfer_one_message) in spi_controller_initialize_queue()
1872 ctlr->transfer_one_message = spi_transfer_one_message; in spi_controller_initialize_queue()
1875 ret = spi_init_queue(ctlr); in spi_controller_initialize_queue()
1877 dev_err(&ctlr->dev, "problem initializing queue\n"); in spi_controller_initialize_queue()
1880 ctlr->queued = true; in spi_controller_initialize_queue()
1881 ret = spi_start_queue(ctlr); in spi_controller_initialize_queue()
1883 dev_err(&ctlr->dev, "problem starting queue\n"); in spi_controller_initialize_queue()
1890 spi_destroy_queue(ctlr); in spi_controller_initialize_queue()
1905 void spi_flush_queue(struct spi_controller *ctlr) in spi_flush_queue() argument
1907 if (ctlr->transfer == spi_queued_transfer) in spi_flush_queue()
1908 __spi_pump_messages(ctlr, false); in spi_flush_queue()
1914 static int of_spi_parse_dt(struct spi_controller *ctlr, struct spi_device *spi, in of_spi_parse_dt() argument
1947 dev_warn(&ctlr->dev, in of_spi_parse_dt()
1968 dev_warn(&ctlr->dev, in of_spi_parse_dt()
1975 if (spi_controller_is_slave(ctlr)) { in of_spi_parse_dt()
1977 dev_err(&ctlr->dev, "%pOF is not called 'slave'\n", in of_spi_parse_dt()
1987 dev_err(&ctlr->dev, "%pOF has no valid 'reg' property (%d)\n", in of_spi_parse_dt()
2001 of_register_spi_device(struct spi_controller *ctlr, struct device_node *nc) in of_register_spi_device() argument
2007 spi = spi_alloc_device(ctlr); in of_register_spi_device()
2009 dev_err(&ctlr->dev, "spi_device alloc error for %pOF\n", nc); in of_register_spi_device()
2018 dev_err(&ctlr->dev, "cannot find modalias for %pOF\n", nc); in of_register_spi_device()
2022 rc = of_spi_parse_dt(ctlr, spi, nc); in of_register_spi_device()
2033 dev_err(&ctlr->dev, "spi_device register error %pOF\n", nc); in of_register_spi_device()
2053 static void of_register_spi_devices(struct spi_controller *ctlr) in of_register_spi_devices() argument
2058 if (!ctlr->dev.of_node) in of_register_spi_devices()
2061 for_each_available_child_of_node(ctlr->dev.of_node, nc) { in of_register_spi_devices()
2064 spi = of_register_spi_device(ctlr, nc); in of_register_spi_devices()
2066 dev_warn(&ctlr->dev, in of_register_spi_devices()
2073 static void of_register_spi_devices(struct spi_controller *ctlr) { } in of_register_spi_devices() argument
2078 struct spi_controller *ctlr; member
2118 struct spi_controller *ctlr = lookup->ctlr; in acpi_spi_add_resource() local
2133 ACPI_HANDLE(ctlr->dev.parent) != parent_handle) in acpi_spi_add_resource()
2143 if (ctlr->fw_translate_cs) { in acpi_spi_add_resource()
2144 int cs = ctlr->fw_translate_cs(ctlr, in acpi_spi_add_resource()
2174 static acpi_status acpi_register_spi_device(struct spi_controller *ctlr, in acpi_register_spi_device() argument
2187 lookup.ctlr = ctlr; in acpi_register_spi_device()
2201 ACPI_HANDLE(ctlr->dev.parent) == parent_handle) { in acpi_register_spi_device()
2209 spi = spi_alloc_device(ctlr); in acpi_register_spi_device()
2211 dev_err(&ctlr->dev, "failed to allocate SPI device for %s\n", in acpi_register_spi_device()
2235 dev_err(&ctlr->dev, "failed to add SPI device %s from ACPI\n", in acpi_register_spi_device()
2246 struct spi_controller *ctlr = data; in acpi_spi_add_device() local
2252 return acpi_register_spi_device(ctlr, adev); in acpi_spi_add_device()
2257 static void acpi_register_spi_devices(struct spi_controller *ctlr) in acpi_register_spi_devices() argument
2262 handle = ACPI_HANDLE(ctlr->dev.parent); in acpi_register_spi_devices()
2268 acpi_spi_add_device, NULL, ctlr, NULL); in acpi_register_spi_devices()
2270 dev_warn(&ctlr->dev, "failed to enumerate SPI slaves\n"); in acpi_register_spi_devices()
2273 static inline void acpi_register_spi_devices(struct spi_controller *ctlr) {} in acpi_register_spi_devices() argument
2278 struct spi_controller *ctlr; in spi_controller_release() local
2280 ctlr = container_of(dev, struct spi_controller, dev); in spi_controller_release()
2281 kfree(ctlr); in spi_controller_release()
2299 struct spi_controller *ctlr = spi->controller; in spi_slave_abort() local
2301 if (spi_controller_is_slave(ctlr) && ctlr->slave_abort) in spi_slave_abort()
2302 return ctlr->slave_abort(ctlr); in spi_slave_abort()
2316 struct spi_controller *ctlr = container_of(dev, struct spi_controller, in slave_show() local
2320 child = device_find_child(&ctlr->dev, NULL, match_true); in slave_show()
2328 struct spi_controller *ctlr = container_of(dev, struct spi_controller, in slave_store() local
2339 child = device_find_child(&ctlr->dev, NULL, match_true); in slave_store()
2348 spi = spi_alloc_device(ctlr); in slave_store()
2419 struct spi_controller *ctlr; in __spi_alloc_controller() local
2420 size_t ctlr_size = ALIGN(sizeof(*ctlr), dma_get_cache_alignment()); in __spi_alloc_controller()
2425 ctlr = kzalloc(size + ctlr_size, GFP_KERNEL); in __spi_alloc_controller()
2426 if (!ctlr) in __spi_alloc_controller()
2429 device_initialize(&ctlr->dev); in __spi_alloc_controller()
2430 ctlr->bus_num = -1; in __spi_alloc_controller()
2431 ctlr->num_chipselect = 1; in __spi_alloc_controller()
2432 ctlr->slave = slave; in __spi_alloc_controller()
2434 ctlr->dev.class = &spi_slave_class; in __spi_alloc_controller()
2436 ctlr->dev.class = &spi_master_class; in __spi_alloc_controller()
2437 ctlr->dev.parent = dev; in __spi_alloc_controller()
2438 pm_suspend_ignore_children(&ctlr->dev, true); in __spi_alloc_controller()
2439 spi_controller_set_devdata(ctlr, (void *)ctlr + ctlr_size); in __spi_alloc_controller()
2441 return ctlr; in __spi_alloc_controller()
2445 static void devm_spi_release_controller(struct device *dev, void *ctlr) in devm_spi_release_controller() argument
2447 spi_controller_put(*(struct spi_controller **)ctlr); in devm_spi_release_controller()
2469 struct spi_controller **ptr, *ctlr; in __devm_spi_alloc_controller() local
2476 ctlr = __spi_alloc_controller(dev, size, slave); in __devm_spi_alloc_controller()
2477 if (ctlr) { in __devm_spi_alloc_controller()
2478 *ptr = ctlr; in __devm_spi_alloc_controller()
2484 return ctlr; in __devm_spi_alloc_controller()
2489 static int of_spi_get_gpio_numbers(struct spi_controller *ctlr) in of_spi_get_gpio_numbers() argument
2492 struct device_node *np = ctlr->dev.of_node; in of_spi_get_gpio_numbers()
2498 ctlr->num_chipselect = max_t(int, nb, ctlr->num_chipselect); in of_spi_get_gpio_numbers()
2506 cs = devm_kcalloc(&ctlr->dev, ctlr->num_chipselect, sizeof(int), in of_spi_get_gpio_numbers()
2508 ctlr->cs_gpios = cs; in of_spi_get_gpio_numbers()
2510 if (!ctlr->cs_gpios) in of_spi_get_gpio_numbers()
2513 for (i = 0; i < ctlr->num_chipselect; i++) in of_spi_get_gpio_numbers()
2522 static int of_spi_get_gpio_numbers(struct spi_controller *ctlr) in of_spi_get_gpio_numbers() argument
2532 static int spi_get_gpio_descs(struct spi_controller *ctlr) in spi_get_gpio_descs() argument
2536 struct device *dev = &ctlr->dev; in spi_get_gpio_descs()
2541 ctlr->num_chipselect = max_t(int, nb, ctlr->num_chipselect); in spi_get_gpio_descs()
2549 cs = devm_kcalloc(dev, ctlr->num_chipselect, sizeof(*cs), in spi_get_gpio_descs()
2553 ctlr->cs_gpiods = cs; in spi_get_gpio_descs()
2584 if (ctlr->max_native_cs && i >= ctlr->max_native_cs) { in spi_get_gpio_descs()
2591 ctlr->unused_native_cs = ffz(native_cs_mask); in spi_get_gpio_descs()
2592 if (num_cs_gpios && ctlr->max_native_cs && in spi_get_gpio_descs()
2593 ctlr->unused_native_cs >= ctlr->max_native_cs) { in spi_get_gpio_descs()
2601 static int spi_controller_check_ops(struct spi_controller *ctlr) in spi_controller_check_ops() argument
2610 if (ctlr->mem_ops) { in spi_controller_check_ops()
2611 if (!ctlr->mem_ops->exec_op) in spi_controller_check_ops()
2613 } else if (!ctlr->transfer && !ctlr->transfer_one && in spi_controller_check_ops()
2614 !ctlr->transfer_one_message) { in spi_controller_check_ops()
2644 int spi_register_controller(struct spi_controller *ctlr) in spi_register_controller() argument
2646 struct device *dev = ctlr->dev.parent; in spi_register_controller()
2658 status = spi_controller_check_ops(ctlr); in spi_register_controller()
2662 if (ctlr->bus_num >= 0) { in spi_register_controller()
2665 id = idr_alloc(&spi_master_idr, ctlr, ctlr->bus_num, in spi_register_controller()
2666 ctlr->bus_num + 1, GFP_KERNEL); in spi_register_controller()
2670 ctlr->bus_num = id; in spi_register_controller()
2671 } else if (ctlr->dev.of_node) { in spi_register_controller()
2673 id = of_alias_get_id(ctlr->dev.of_node, "spi"); in spi_register_controller()
2675 ctlr->bus_num = id; in spi_register_controller()
2677 id = idr_alloc(&spi_master_idr, ctlr, ctlr->bus_num, in spi_register_controller()
2678 ctlr->bus_num + 1, GFP_KERNEL); in spi_register_controller()
2684 if (ctlr->bus_num < 0) { in spi_register_controller()
2692 id = idr_alloc(&spi_master_idr, ctlr, first_dynamic, in spi_register_controller()
2697 ctlr->bus_num = id; in spi_register_controller()
2699 INIT_LIST_HEAD(&ctlr->queue); in spi_register_controller()
2700 spin_lock_init(&ctlr->queue_lock); in spi_register_controller()
2701 spin_lock_init(&ctlr->bus_lock_spinlock); in spi_register_controller()
2702 mutex_init(&ctlr->bus_lock_mutex); in spi_register_controller()
2703 mutex_init(&ctlr->io_mutex); in spi_register_controller()
2704 ctlr->bus_lock_flag = 0; in spi_register_controller()
2705 init_completion(&ctlr->xfer_completion); in spi_register_controller()
2706 if (!ctlr->max_dma_len) in spi_register_controller()
2707 ctlr->max_dma_len = INT_MAX; in spi_register_controller()
2712 dev_set_name(&ctlr->dev, "spi%u", ctlr->bus_num); in spi_register_controller()
2714 if (!spi_controller_is_slave(ctlr)) { in spi_register_controller()
2715 if (ctlr->use_gpio_descriptors) { in spi_register_controller()
2716 status = spi_get_gpio_descs(ctlr); in spi_register_controller()
2723 ctlr->mode_bits |= SPI_CS_HIGH; in spi_register_controller()
2726 status = of_spi_get_gpio_numbers(ctlr); in spi_register_controller()
2736 if (!ctlr->num_chipselect) { in spi_register_controller()
2741 status = device_add(&ctlr->dev); in spi_register_controller()
2745 spi_controller_is_slave(ctlr) ? "slave" : "master", in spi_register_controller()
2746 dev_name(&ctlr->dev)); in spi_register_controller()
2753 if (ctlr->transfer) { in spi_register_controller()
2755 } else if (ctlr->transfer_one || ctlr->transfer_one_message) { in spi_register_controller()
2756 status = spi_controller_initialize_queue(ctlr); in spi_register_controller()
2758 device_del(&ctlr->dev); in spi_register_controller()
2763 spin_lock_init(&ctlr->statistics.lock); in spi_register_controller()
2766 list_add_tail(&ctlr->list, &spi_controller_list); in spi_register_controller()
2768 spi_match_controller_to_boardinfo(ctlr, &bi->board_info); in spi_register_controller()
2772 of_register_spi_devices(ctlr); in spi_register_controller()
2773 acpi_register_spi_devices(ctlr); in spi_register_controller()
2778 idr_remove(&spi_master_idr, ctlr->bus_num); in spi_register_controller()
2803 struct spi_controller *ctlr) in devm_spi_register_controller() argument
2812 ret = spi_register_controller(ctlr); in devm_spi_register_controller()
2814 *ptr = ctlr; in devm_spi_register_controller()
2824 static int devm_spi_match_controller(struct device *dev, void *res, void *ctlr) in devm_spi_match_controller() argument
2826 return *(struct spi_controller **)res == ctlr; in devm_spi_match_controller()
2847 void spi_unregister_controller(struct spi_controller *ctlr) in spi_unregister_controller() argument
2850 int id = ctlr->bus_num; in spi_unregister_controller()
2856 device_for_each_child(&ctlr->dev, NULL, __unregister); in spi_unregister_controller()
2862 if (ctlr->queued) { in spi_unregister_controller()
2863 if (spi_destroy_queue(ctlr)) in spi_unregister_controller()
2864 dev_err(&ctlr->dev, "queue remove failed\n"); in spi_unregister_controller()
2867 list_del(&ctlr->list); in spi_unregister_controller()
2870 device_del(&ctlr->dev); in spi_unregister_controller()
2875 if (!devres_find(ctlr->dev.parent, devm_spi_release_controller, in spi_unregister_controller()
2876 devm_spi_match_controller, ctlr)) in spi_unregister_controller()
2877 put_device(&ctlr->dev); in spi_unregister_controller()
2881 if (found == ctlr) in spi_unregister_controller()
2890 int spi_controller_suspend(struct spi_controller *ctlr) in spi_controller_suspend() argument
2895 if (!ctlr->queued) in spi_controller_suspend()
2898 ret = spi_stop_queue(ctlr); in spi_controller_suspend()
2900 dev_err(&ctlr->dev, "queue stop failed\n"); in spi_controller_suspend()
2906 int spi_controller_resume(struct spi_controller *ctlr) in spi_controller_resume() argument
2910 if (!ctlr->queued) in spi_controller_resume()
2913 ret = spi_start_queue(ctlr); in spi_controller_resume()
2915 dev_err(&ctlr->dev, "queue restart failed\n"); in spi_controller_resume()
2923 struct spi_controller *ctlr; in __spi_controller_match() local
2926 ctlr = container_of(dev, struct spi_controller, dev); in __spi_controller_match()
2927 return ctlr->bus_num == *bus_num; in __spi_controller_match()
2945 struct spi_controller *ctlr = NULL; in spi_busnum_to_master() local
2950 ctlr = container_of(dev, struct spi_controller, dev); in spi_busnum_to_master()
2952 return ctlr; in spi_busnum_to_master()
3027 void spi_res_release(struct spi_controller *ctlr, struct spi_message *message) in spi_res_release() argument
3033 res->release(ctlr, message, res->data); in spi_res_release()
3046 static void __spi_replace_transfers_release(struct spi_controller *ctlr, in __spi_replace_transfers_release() argument
3055 rxfer->release(ctlr, msg, res); in __spi_replace_transfers_release()
3175 static int __spi_split_transfer_maxsize(struct spi_controller *ctlr, in __spi_split_transfer_maxsize() argument
3232 SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics, in __spi_split_transfer_maxsize()
3251 int spi_split_transfers_maxsize(struct spi_controller *ctlr, in spi_split_transfers_maxsize() argument
3267 ret = __spi_split_transfer_maxsize(ctlr, msg, &xfer, in spi_split_transfers_maxsize()
3284 static int __spi_validate_bits_per_word(struct spi_controller *ctlr, in __spi_validate_bits_per_word() argument
3287 if (ctlr->bits_per_word_mask) { in __spi_validate_bits_per_word()
3291 if (!(ctlr->bits_per_word_mask & SPI_BPW_MASK(bits_per_word))) in __spi_validate_bits_per_word()
3495 struct spi_controller *ctlr = spi->controller; in __spi_validate() local
3508 if ((spi->mode & SPI_CS_WORD) && (!(ctlr->mode_bits & SPI_CS_WORD) || in __spi_validate()
3519 ret = spi_split_transfers_maxsize(ctlr, message, maxsize, in __spi_validate()
3537 if ((ctlr->flags & SPI_CONTROLLER_HALF_DUPLEX) || in __spi_validate()
3539 unsigned flags = ctlr->flags; in __spi_validate()
3569 if (ctlr->max_speed_hz && xfer->speed_hz > ctlr->max_speed_hz) in __spi_validate()
3570 xfer->speed_hz = ctlr->max_speed_hz; in __spi_validate()
3572 if (__spi_validate_bits_per_word(ctlr, xfer->bits_per_word)) in __spi_validate()
3590 if (xfer->speed_hz && ctlr->min_speed_hz && in __spi_validate()
3591 xfer->speed_hz < ctlr->min_speed_hz) in __spi_validate()
3639 struct spi_controller *ctlr = spi->controller; in __spi_async() local
3646 if (!ctlr->transfer) in __spi_async()
3651 SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics, spi_async); in __spi_async()
3656 if (!ctlr->ptp_sts_supported) { in __spi_async()
3663 return ctlr->transfer(spi, message); in __spi_async()
3699 struct spi_controller *ctlr = spi->controller; in spi_async() local
3707 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in spi_async()
3709 if (ctlr->bus_lock_flag) in spi_async()
3714 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in spi_async()
3753 struct spi_controller *ctlr = spi->controller; in spi_async_locked() local
3761 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in spi_async_locked()
3765 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in spi_async_locked()
3788 struct spi_controller *ctlr = spi->controller; in __spi_sync() local
3799 SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics, spi_sync); in __spi_sync()
3807 if (ctlr->transfer == spi_queued_transfer) { in __spi_sync()
3808 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in __spi_sync()
3814 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in __spi_sync()
3823 if (ctlr->transfer == spi_queued_transfer) { in __spi_sync()
3824 SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics, in __spi_sync()
3828 __spi_pump_messages(ctlr, false); in __spi_sync()
3908 int spi_bus_lock(struct spi_controller *ctlr) in spi_bus_lock() argument
3912 mutex_lock(&ctlr->bus_lock_mutex); in spi_bus_lock()
3914 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in spi_bus_lock()
3915 ctlr->bus_lock_flag = 1; in spi_bus_lock()
3916 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in spi_bus_lock()
3937 int spi_bus_unlock(struct spi_controller *ctlr) in spi_bus_unlock() argument
3939 ctlr->bus_lock_flag = 0; in spi_bus_unlock()
3941 mutex_unlock(&ctlr->bus_lock_mutex); in spi_bus_unlock()
4059 struct spi_controller *ctlr; in of_spi_notify() local
4064 ctlr = of_find_spi_controller_by_node(rd->dn->parent); in of_spi_notify()
4065 if (ctlr == NULL) in of_spi_notify()
4069 put_device(&ctlr->dev); in of_spi_notify()
4073 spi = of_register_spi_device(ctlr, rd->dn); in of_spi_notify()
4074 put_device(&ctlr->dev); in of_spi_notify()
4145 struct spi_controller *ctlr; in acpi_spi_notify() local
4150 ctlr = acpi_spi_find_controller_by_adev(adev->parent); in acpi_spi_notify()
4151 if (!ctlr) in acpi_spi_notify()
4154 acpi_register_spi_device(ctlr, adev); in acpi_spi_notify()
4155 put_device(&ctlr->dev); in acpi_spi_notify()