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()
495 struct spi_device *spi_alloc_device(struct spi_controller *ctlr) in spi_alloc_device() argument
499 if (!spi_controller_get(ctlr)) in spi_alloc_device()
504 spi_controller_put(ctlr); in spi_alloc_device()
508 spi->master = spi->controller = ctlr; in spi_alloc_device()
509 spi->dev.parent = &ctlr->dev; in spi_alloc_device()
557 struct spi_controller *ctlr = spi->controller; in spi_add_device() local
558 struct device *dev = ctlr->dev.parent; in spi_add_device()
562 if (spi->chip_select >= ctlr->num_chipselect) { in spi_add_device()
564 ctlr->num_chipselect); in spi_add_device()
585 if (ctlr->cs_gpiods) in spi_add_device()
586 spi->cs_gpiod = ctlr->cs_gpiods[spi->chip_select]; in spi_add_device()
587 else if (ctlr->cs_gpios) in spi_add_device()
588 spi->cs_gpio = ctlr->cs_gpios[spi->chip_select]; in spi_add_device()
629 struct spi_device *spi_new_device(struct spi_controller *ctlr, in spi_new_device() argument
642 proxy = spi_alloc_device(ctlr); in spi_new_device()
660 dev_err(&ctlr->dev, in spi_new_device()
704 static void spi_match_controller_to_boardinfo(struct spi_controller *ctlr, in spi_match_controller_to_boardinfo() argument
709 if (ctlr->bus_num != bi->bus_num) in spi_match_controller_to_boardinfo()
712 dev = spi_new_device(ctlr, bi); in spi_match_controller_to_boardinfo()
714 dev_err(ctlr->dev.parent, "can't create new device for %s\n", in spi_match_controller_to_boardinfo()
753 struct spi_controller *ctlr; in spi_register_board_info() local
765 list_for_each_entry(ctlr, &spi_controller_list, list) in spi_register_board_info()
766 spi_match_controller_to_boardinfo(ctlr, in spi_register_board_info()
806 int spi_map_buf(struct spi_controller *ctlr, struct device *dev, in spi_map_buf() argument
831 desc_len = min_t(int, max_seg_size, ctlr->max_dma_len); in spi_map_buf()
887 void spi_unmap_buf(struct spi_controller *ctlr, struct device *dev, in spi_unmap_buf() argument
896 static int __spi_map_msg(struct spi_controller *ctlr, struct spi_message *msg) in __spi_map_msg() argument
902 if (!ctlr->can_dma) in __spi_map_msg()
905 if (ctlr->dma_tx) in __spi_map_msg()
906 tx_dev = ctlr->dma_tx->device->dev; in __spi_map_msg()
908 tx_dev = ctlr->dev.parent; in __spi_map_msg()
910 if (ctlr->dma_rx) in __spi_map_msg()
911 rx_dev = ctlr->dma_rx->device->dev; in __spi_map_msg()
913 rx_dev = ctlr->dev.parent; in __spi_map_msg()
916 if (!ctlr->can_dma(ctlr, msg->spi, xfer)) in __spi_map_msg()
920 ret = spi_map_buf(ctlr, tx_dev, &xfer->tx_sg, in __spi_map_msg()
928 ret = spi_map_buf(ctlr, rx_dev, &xfer->rx_sg, in __spi_map_msg()
932 spi_unmap_buf(ctlr, tx_dev, &xfer->tx_sg, in __spi_map_msg()
939 ctlr->cur_msg_mapped = true; in __spi_map_msg()
944 static int __spi_unmap_msg(struct spi_controller *ctlr, struct spi_message *msg) in __spi_unmap_msg() argument
949 if (!ctlr->cur_msg_mapped || !ctlr->can_dma) in __spi_unmap_msg()
952 if (ctlr->dma_tx) in __spi_unmap_msg()
953 tx_dev = ctlr->dma_tx->device->dev; in __spi_unmap_msg()
955 tx_dev = ctlr->dev.parent; in __spi_unmap_msg()
957 if (ctlr->dma_rx) in __spi_unmap_msg()
958 rx_dev = ctlr->dma_rx->device->dev; in __spi_unmap_msg()
960 rx_dev = ctlr->dev.parent; in __spi_unmap_msg()
963 if (!ctlr->can_dma(ctlr, msg->spi, xfer)) in __spi_unmap_msg()
966 spi_unmap_buf(ctlr, rx_dev, &xfer->rx_sg, DMA_FROM_DEVICE); in __spi_unmap_msg()
967 spi_unmap_buf(ctlr, tx_dev, &xfer->tx_sg, DMA_TO_DEVICE); in __spi_unmap_msg()
973 static inline int __spi_map_msg(struct spi_controller *ctlr, in __spi_map_msg() argument
979 static inline int __spi_unmap_msg(struct spi_controller *ctlr, in __spi_unmap_msg() argument
986 static inline int spi_unmap_msg(struct spi_controller *ctlr, in spi_unmap_msg() argument
996 if (xfer->tx_buf == ctlr->dummy_tx) in spi_unmap_msg()
998 if (xfer->rx_buf == ctlr->dummy_rx) in spi_unmap_msg()
1002 return __spi_unmap_msg(ctlr, msg); in spi_unmap_msg()
1005 static int spi_map_msg(struct spi_controller *ctlr, struct spi_message *msg) in spi_map_msg() argument
1011 if (ctlr->flags & (SPI_CONTROLLER_MUST_RX | SPI_CONTROLLER_MUST_TX)) { in spi_map_msg()
1016 if ((ctlr->flags & SPI_CONTROLLER_MUST_TX) && in spi_map_msg()
1019 if ((ctlr->flags & SPI_CONTROLLER_MUST_RX) && in spi_map_msg()
1025 tmp = krealloc(ctlr->dummy_tx, max_tx, in spi_map_msg()
1029 ctlr->dummy_tx = tmp; in spi_map_msg()
1034 tmp = krealloc(ctlr->dummy_rx, max_rx, in spi_map_msg()
1038 ctlr->dummy_rx = tmp; in spi_map_msg()
1047 xfer->tx_buf = ctlr->dummy_tx; in spi_map_msg()
1049 xfer->rx_buf = ctlr->dummy_rx; in spi_map_msg()
1054 return __spi_map_msg(ctlr, msg); in spi_map_msg()
1057 static int spi_transfer_wait(struct spi_controller *ctlr, in spi_transfer_wait() argument
1061 struct spi_statistics *statm = &ctlr->statistics; in spi_transfer_wait()
1065 if (spi_controller_is_slave(ctlr)) { in spi_transfer_wait()
1066 if (wait_for_completion_interruptible(&ctlr->xfer_completion)) { in spi_transfer_wait()
1078 ms = wait_for_completion_timeout(&ctlr->xfer_completion, in spi_transfer_wait()
1154 static int spi_transfer_one_message(struct spi_controller *ctlr, in spi_transfer_one_message() argument
1160 struct spi_statistics *statm = &ctlr->statistics; in spi_transfer_one_message()
1171 spi_statistics_add_transfer_stats(statm, xfer, ctlr); in spi_transfer_one_message()
1172 spi_statistics_add_transfer_stats(stats, xfer, ctlr); in spi_transfer_one_message()
1175 reinit_completion(&ctlr->xfer_completion); in spi_transfer_one_message()
1177 ret = ctlr->transfer_one(ctlr, msg->spi, xfer); in spi_transfer_one_message()
1189 ret = spi_transfer_wait(ctlr, msg, xfer); in spi_transfer_one_message()
1229 if (msg->status && ctlr->handle_err) in spi_transfer_one_message()
1230 ctlr->handle_err(ctlr, msg); in spi_transfer_one_message()
1232 spi_res_release(ctlr, msg); in spi_transfer_one_message()
1234 spi_finalize_current_message(ctlr); in spi_transfer_one_message()
1247 void spi_finalize_current_transfer(struct spi_controller *ctlr) in spi_finalize_current_transfer() argument
1249 complete(&ctlr->xfer_completion); in spi_finalize_current_transfer()
1266 static void __spi_pump_messages(struct spi_controller *ctlr, bool in_kthread) in __spi_pump_messages() argument
1274 spin_lock_irqsave(&ctlr->queue_lock, flags); in __spi_pump_messages()
1277 if (ctlr->cur_msg) { in __spi_pump_messages()
1278 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1283 if (ctlr->idling) { in __spi_pump_messages()
1284 kthread_queue_work(&ctlr->kworker, &ctlr->pump_messages); in __spi_pump_messages()
1285 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1290 if (list_empty(&ctlr->queue) || !ctlr->running) { in __spi_pump_messages()
1291 if (!ctlr->busy) { in __spi_pump_messages()
1292 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1298 kthread_queue_work(&ctlr->kworker, in __spi_pump_messages()
1299 &ctlr->pump_messages); in __spi_pump_messages()
1300 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1304 ctlr->busy = false; in __spi_pump_messages()
1305 ctlr->idling = true; in __spi_pump_messages()
1306 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1308 kfree(ctlr->dummy_rx); in __spi_pump_messages()
1309 ctlr->dummy_rx = NULL; in __spi_pump_messages()
1310 kfree(ctlr->dummy_tx); in __spi_pump_messages()
1311 ctlr->dummy_tx = NULL; in __spi_pump_messages()
1312 if (ctlr->unprepare_transfer_hardware && in __spi_pump_messages()
1313 ctlr->unprepare_transfer_hardware(ctlr)) in __spi_pump_messages()
1314 dev_err(&ctlr->dev, in __spi_pump_messages()
1316 if (ctlr->auto_runtime_pm) { in __spi_pump_messages()
1317 pm_runtime_mark_last_busy(ctlr->dev.parent); in __spi_pump_messages()
1318 pm_runtime_put_autosuspend(ctlr->dev.parent); in __spi_pump_messages()
1320 trace_spi_controller_idle(ctlr); in __spi_pump_messages()
1322 spin_lock_irqsave(&ctlr->queue_lock, flags); in __spi_pump_messages()
1323 ctlr->idling = false; in __spi_pump_messages()
1324 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1329 msg = list_first_entry(&ctlr->queue, struct spi_message, queue); in __spi_pump_messages()
1330 ctlr->cur_msg = msg; in __spi_pump_messages()
1333 if (ctlr->busy) in __spi_pump_messages()
1336 ctlr->busy = true; in __spi_pump_messages()
1337 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1339 mutex_lock(&ctlr->io_mutex); in __spi_pump_messages()
1341 if (!was_busy && ctlr->auto_runtime_pm) { in __spi_pump_messages()
1342 ret = pm_runtime_get_sync(ctlr->dev.parent); in __spi_pump_messages()
1344 pm_runtime_put_noidle(ctlr->dev.parent); in __spi_pump_messages()
1345 dev_err(&ctlr->dev, "Failed to power device: %d\n", in __spi_pump_messages()
1347 mutex_unlock(&ctlr->io_mutex); in __spi_pump_messages()
1353 trace_spi_controller_busy(ctlr); in __spi_pump_messages()
1355 if (!was_busy && ctlr->prepare_transfer_hardware) { in __spi_pump_messages()
1356 ret = ctlr->prepare_transfer_hardware(ctlr); in __spi_pump_messages()
1358 dev_err(&ctlr->dev, in __spi_pump_messages()
1362 if (ctlr->auto_runtime_pm) in __spi_pump_messages()
1363 pm_runtime_put(ctlr->dev.parent); in __spi_pump_messages()
1366 spi_finalize_current_message(ctlr); in __spi_pump_messages()
1368 mutex_unlock(&ctlr->io_mutex); in __spi_pump_messages()
1375 if (ctlr->prepare_message) { in __spi_pump_messages()
1376 ret = ctlr->prepare_message(ctlr, msg); in __spi_pump_messages()
1378 dev_err(&ctlr->dev, "failed to prepare message: %d\n", in __spi_pump_messages()
1381 spi_finalize_current_message(ctlr); in __spi_pump_messages()
1384 ctlr->cur_msg_prepared = true; in __spi_pump_messages()
1387 ret = spi_map_msg(ctlr, msg); in __spi_pump_messages()
1390 spi_finalize_current_message(ctlr); in __spi_pump_messages()
1394 ret = ctlr->transfer_one_message(ctlr, msg); in __spi_pump_messages()
1396 dev_err(&ctlr->dev, in __spi_pump_messages()
1402 mutex_unlock(&ctlr->io_mutex); in __spi_pump_messages()
1415 struct spi_controller *ctlr = in spi_pump_messages() local
1418 __spi_pump_messages(ctlr, true); in spi_pump_messages()
1436 static void spi_set_thread_rt(struct spi_controller *ctlr) in spi_set_thread_rt() argument
1440 dev_info(&ctlr->dev, in spi_set_thread_rt()
1442 sched_setscheduler(ctlr->kworker_task, SCHED_FIFO, ¶m); in spi_set_thread_rt()
1445 static int spi_init_queue(struct spi_controller *ctlr) in spi_init_queue() argument
1447 ctlr->running = false; in spi_init_queue()
1448 ctlr->busy = false; in spi_init_queue()
1450 kthread_init_worker(&ctlr->kworker); in spi_init_queue()
1451 ctlr->kworker_task = kthread_run(kthread_worker_fn, &ctlr->kworker, in spi_init_queue()
1452 "%s", dev_name(&ctlr->dev)); in spi_init_queue()
1453 if (IS_ERR(ctlr->kworker_task)) { in spi_init_queue()
1454 dev_err(&ctlr->dev, "failed to create message pump task\n"); in spi_init_queue()
1455 return PTR_ERR(ctlr->kworker_task); in spi_init_queue()
1457 kthread_init_work(&ctlr->pump_messages, spi_pump_messages); in spi_init_queue()
1466 if (ctlr->rt) in spi_init_queue()
1467 spi_set_thread_rt(ctlr); in spi_init_queue()
1482 struct spi_message *spi_get_next_queued_message(struct spi_controller *ctlr) in spi_get_next_queued_message() argument
1488 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_get_next_queued_message()
1489 next = list_first_entry_or_null(&ctlr->queue, struct spi_message, in spi_get_next_queued_message()
1491 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_get_next_queued_message()
1504 void spi_finalize_current_message(struct spi_controller *ctlr) in spi_finalize_current_message() argument
1510 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_finalize_current_message()
1511 mesg = ctlr->cur_msg; in spi_finalize_current_message()
1512 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_finalize_current_message()
1514 spi_unmap_msg(ctlr, mesg); in spi_finalize_current_message()
1516 if (ctlr->cur_msg_prepared && ctlr->unprepare_message) { in spi_finalize_current_message()
1517 ret = ctlr->unprepare_message(ctlr, mesg); in spi_finalize_current_message()
1519 dev_err(&ctlr->dev, "failed to unprepare message: %d\n", in spi_finalize_current_message()
1524 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_finalize_current_message()
1525 ctlr->cur_msg = NULL; in spi_finalize_current_message()
1526 ctlr->cur_msg_prepared = false; in spi_finalize_current_message()
1527 kthread_queue_work(&ctlr->kworker, &ctlr->pump_messages); in spi_finalize_current_message()
1528 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_finalize_current_message()
1538 static int spi_start_queue(struct spi_controller *ctlr) in spi_start_queue() argument
1542 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_start_queue()
1544 if (ctlr->running || ctlr->busy) { in spi_start_queue()
1545 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_start_queue()
1549 ctlr->running = true; in spi_start_queue()
1550 ctlr->cur_msg = NULL; in spi_start_queue()
1551 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_start_queue()
1553 kthread_queue_work(&ctlr->kworker, &ctlr->pump_messages); in spi_start_queue()
1558 static int spi_stop_queue(struct spi_controller *ctlr) in spi_stop_queue() argument
1564 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_stop_queue()
1572 while ((!list_empty(&ctlr->queue) || ctlr->busy) && limit--) { in spi_stop_queue()
1573 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_stop_queue()
1575 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_stop_queue()
1578 if (!list_empty(&ctlr->queue) || ctlr->busy) in spi_stop_queue()
1581 ctlr->running = false; in spi_stop_queue()
1583 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_stop_queue()
1586 dev_warn(&ctlr->dev, "could not stop message queue\n"); in spi_stop_queue()
1592 static int spi_destroy_queue(struct spi_controller *ctlr) in spi_destroy_queue() argument
1596 ret = spi_stop_queue(ctlr); in spi_destroy_queue()
1605 dev_err(&ctlr->dev, "problem destroying queue\n"); in spi_destroy_queue()
1609 kthread_flush_worker(&ctlr->kworker); in spi_destroy_queue()
1610 kthread_stop(ctlr->kworker_task); in spi_destroy_queue()
1619 struct spi_controller *ctlr = spi->controller; in __spi_queued_transfer() local
1622 spin_lock_irqsave(&ctlr->queue_lock, flags); in __spi_queued_transfer()
1624 if (!ctlr->running) { in __spi_queued_transfer()
1625 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_queued_transfer()
1631 list_add_tail(&msg->queue, &ctlr->queue); in __spi_queued_transfer()
1632 if (!ctlr->busy && need_pump) in __spi_queued_transfer()
1633 kthread_queue_work(&ctlr->kworker, &ctlr->pump_messages); in __spi_queued_transfer()
1635 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_queued_transfer()
1651 static int spi_controller_initialize_queue(struct spi_controller *ctlr) in spi_controller_initialize_queue() argument
1655 ctlr->transfer = spi_queued_transfer; in spi_controller_initialize_queue()
1656 if (!ctlr->transfer_one_message) in spi_controller_initialize_queue()
1657 ctlr->transfer_one_message = spi_transfer_one_message; in spi_controller_initialize_queue()
1660 ret = spi_init_queue(ctlr); in spi_controller_initialize_queue()
1662 dev_err(&ctlr->dev, "problem initializing queue\n"); in spi_controller_initialize_queue()
1665 ctlr->queued = true; in spi_controller_initialize_queue()
1666 ret = spi_start_queue(ctlr); in spi_controller_initialize_queue()
1668 dev_err(&ctlr->dev, "problem starting queue\n"); in spi_controller_initialize_queue()
1675 spi_destroy_queue(ctlr); in spi_controller_initialize_queue()
1690 void spi_flush_queue(struct spi_controller *ctlr) in spi_flush_queue() argument
1692 if (ctlr->transfer == spi_queued_transfer) in spi_flush_queue()
1693 __spi_pump_messages(ctlr, false); in spi_flush_queue()
1699 static int of_spi_parse_dt(struct spi_controller *ctlr, struct spi_device *spi, in of_spi_parse_dt() argument
1720 if (ctlr->use_gpio_descriptors) in of_spi_parse_dt()
1740 dev_warn(&ctlr->dev, in of_spi_parse_dt()
1761 dev_warn(&ctlr->dev, in of_spi_parse_dt()
1768 if (spi_controller_is_slave(ctlr)) { in of_spi_parse_dt()
1770 dev_err(&ctlr->dev, "%pOF is not called 'slave'\n", in of_spi_parse_dt()
1780 dev_err(&ctlr->dev, "%pOF has no valid 'reg' property (%d)\n", in of_spi_parse_dt()
1789 dev_err(&ctlr->dev, in of_spi_parse_dt()
1799 of_register_spi_device(struct spi_controller *ctlr, struct device_node *nc) in of_register_spi_device() argument
1805 spi = spi_alloc_device(ctlr); in of_register_spi_device()
1807 dev_err(&ctlr->dev, "spi_device alloc error for %pOF\n", nc); in of_register_spi_device()
1816 dev_err(&ctlr->dev, "cannot find modalias for %pOF\n", nc); in of_register_spi_device()
1820 rc = of_spi_parse_dt(ctlr, spi, nc); in of_register_spi_device()
1831 dev_err(&ctlr->dev, "spi_device register error %pOF\n", nc); in of_register_spi_device()
1851 static void of_register_spi_devices(struct spi_controller *ctlr) in of_register_spi_devices() argument
1856 if (!ctlr->dev.of_node) in of_register_spi_devices()
1859 for_each_available_child_of_node(ctlr->dev.of_node, nc) { in of_register_spi_devices()
1862 spi = of_register_spi_device(ctlr, nc); in of_register_spi_devices()
1864 dev_warn(&ctlr->dev, in of_register_spi_devices()
1871 static void of_register_spi_devices(struct spi_controller *ctlr) { } in of_register_spi_devices() argument
1876 struct spi_controller *ctlr; member
1916 struct spi_controller *ctlr = lookup->ctlr; in acpi_spi_add_resource() local
1931 ACPI_HANDLE(ctlr->dev.parent) != parent_handle) in acpi_spi_add_resource()
1941 if (ctlr->fw_translate_cs) { in acpi_spi_add_resource()
1942 int cs = ctlr->fw_translate_cs(ctlr, in acpi_spi_add_resource()
1971 static acpi_status acpi_register_spi_device(struct spi_controller *ctlr, in acpi_register_spi_device() argument
1984 lookup.ctlr = ctlr; in acpi_register_spi_device()
1998 ACPI_HANDLE(ctlr->dev.parent) == parent_handle) { in acpi_register_spi_device()
2006 spi = spi_alloc_device(ctlr); in acpi_register_spi_device()
2008 dev_err(&ctlr->dev, "failed to allocate SPI device for %s\n", in acpi_register_spi_device()
2031 dev_err(&ctlr->dev, "failed to add SPI device %s from ACPI\n", in acpi_register_spi_device()
2042 struct spi_controller *ctlr = data; in acpi_spi_add_device() local
2048 return acpi_register_spi_device(ctlr, adev); in acpi_spi_add_device()
2053 static void acpi_register_spi_devices(struct spi_controller *ctlr) in acpi_register_spi_devices() argument
2058 handle = ACPI_HANDLE(ctlr->dev.parent); in acpi_register_spi_devices()
2064 acpi_spi_add_device, NULL, ctlr, NULL); in acpi_register_spi_devices()
2066 dev_warn(&ctlr->dev, "failed to enumerate SPI slaves\n"); in acpi_register_spi_devices()
2069 static inline void acpi_register_spi_devices(struct spi_controller *ctlr) {} in acpi_register_spi_devices() argument
2074 struct spi_controller *ctlr; in spi_controller_release() local
2076 ctlr = container_of(dev, struct spi_controller, dev); in spi_controller_release()
2077 kfree(ctlr); in spi_controller_release()
2095 struct spi_controller *ctlr = spi->controller; in spi_slave_abort() local
2097 if (spi_controller_is_slave(ctlr) && ctlr->slave_abort) in spi_slave_abort()
2098 return ctlr->slave_abort(ctlr); in spi_slave_abort()
2112 struct spi_controller *ctlr = container_of(dev, struct spi_controller, in slave_show() local
2116 child = device_find_child(&ctlr->dev, NULL, match_true); in slave_show()
2124 struct spi_controller *ctlr = container_of(dev, struct spi_controller, in slave_store() local
2135 child = device_find_child(&ctlr->dev, NULL, match_true); in slave_store()
2144 spi = spi_alloc_device(ctlr); in slave_store()
2215 struct spi_controller *ctlr; in __spi_alloc_controller() local
2216 size_t ctlr_size = ALIGN(sizeof(*ctlr), dma_get_cache_alignment()); in __spi_alloc_controller()
2221 ctlr = kzalloc(size + ctlr_size, GFP_KERNEL); in __spi_alloc_controller()
2222 if (!ctlr) in __spi_alloc_controller()
2225 device_initialize(&ctlr->dev); in __spi_alloc_controller()
2226 ctlr->bus_num = -1; in __spi_alloc_controller()
2227 ctlr->num_chipselect = 1; in __spi_alloc_controller()
2228 ctlr->slave = slave; in __spi_alloc_controller()
2230 ctlr->dev.class = &spi_slave_class; in __spi_alloc_controller()
2232 ctlr->dev.class = &spi_master_class; in __spi_alloc_controller()
2233 ctlr->dev.parent = dev; in __spi_alloc_controller()
2234 pm_suspend_ignore_children(&ctlr->dev, true); in __spi_alloc_controller()
2235 spi_controller_set_devdata(ctlr, (void *)ctlr + ctlr_size); in __spi_alloc_controller()
2237 return ctlr; in __spi_alloc_controller()
2242 static int of_spi_get_gpio_numbers(struct spi_controller *ctlr) in of_spi_get_gpio_numbers() argument
2245 struct device_node *np = ctlr->dev.of_node; in of_spi_get_gpio_numbers()
2251 ctlr->num_chipselect = max_t(int, nb, ctlr->num_chipselect); in of_spi_get_gpio_numbers()
2259 cs = devm_kcalloc(&ctlr->dev, ctlr->num_chipselect, sizeof(int), in of_spi_get_gpio_numbers()
2261 ctlr->cs_gpios = cs; in of_spi_get_gpio_numbers()
2263 if (!ctlr->cs_gpios) in of_spi_get_gpio_numbers()
2266 for (i = 0; i < ctlr->num_chipselect; i++) in of_spi_get_gpio_numbers()
2275 static int of_spi_get_gpio_numbers(struct spi_controller *ctlr) in of_spi_get_gpio_numbers() argument
2285 static int spi_get_gpio_descs(struct spi_controller *ctlr) in spi_get_gpio_descs() argument
2289 struct device *dev = &ctlr->dev; in spi_get_gpio_descs()
2292 ctlr->num_chipselect = max_t(int, nb, ctlr->num_chipselect); in spi_get_gpio_descs()
2300 cs = devm_kcalloc(dev, ctlr->num_chipselect, sizeof(*cs), in spi_get_gpio_descs()
2304 ctlr->cs_gpiods = cs; in spi_get_gpio_descs()
2337 static int spi_controller_check_ops(struct spi_controller *ctlr) in spi_controller_check_ops() argument
2346 if (ctlr->mem_ops) { in spi_controller_check_ops()
2347 if (!ctlr->mem_ops->exec_op) in spi_controller_check_ops()
2349 } else if (!ctlr->transfer && !ctlr->transfer_one && in spi_controller_check_ops()
2350 !ctlr->transfer_one_message) { in spi_controller_check_ops()
2380 int spi_register_controller(struct spi_controller *ctlr) in spi_register_controller() argument
2382 struct device *dev = ctlr->dev.parent; in spi_register_controller()
2394 status = spi_controller_check_ops(ctlr); in spi_register_controller()
2398 if (ctlr->bus_num >= 0) { in spi_register_controller()
2401 id = idr_alloc(&spi_master_idr, ctlr, ctlr->bus_num, in spi_register_controller()
2402 ctlr->bus_num + 1, GFP_KERNEL); in spi_register_controller()
2406 ctlr->bus_num = id; in spi_register_controller()
2407 } else if (ctlr->dev.of_node) { in spi_register_controller()
2409 id = of_alias_get_id(ctlr->dev.of_node, "spi"); in spi_register_controller()
2411 ctlr->bus_num = id; in spi_register_controller()
2413 id = idr_alloc(&spi_master_idr, ctlr, ctlr->bus_num, in spi_register_controller()
2414 ctlr->bus_num + 1, GFP_KERNEL); in spi_register_controller()
2420 if (ctlr->bus_num < 0) { in spi_register_controller()
2428 id = idr_alloc(&spi_master_idr, ctlr, first_dynamic, in spi_register_controller()
2433 ctlr->bus_num = id; in spi_register_controller()
2435 INIT_LIST_HEAD(&ctlr->queue); in spi_register_controller()
2436 spin_lock_init(&ctlr->queue_lock); in spi_register_controller()
2437 spin_lock_init(&ctlr->bus_lock_spinlock); in spi_register_controller()
2438 mutex_init(&ctlr->bus_lock_mutex); in spi_register_controller()
2439 mutex_init(&ctlr->io_mutex); in spi_register_controller()
2440 ctlr->bus_lock_flag = 0; in spi_register_controller()
2441 init_completion(&ctlr->xfer_completion); in spi_register_controller()
2442 if (!ctlr->max_dma_len) in spi_register_controller()
2443 ctlr->max_dma_len = INT_MAX; in spi_register_controller()
2448 dev_set_name(&ctlr->dev, "spi%u", ctlr->bus_num); in spi_register_controller()
2450 if (!spi_controller_is_slave(ctlr)) { in spi_register_controller()
2451 if (ctlr->use_gpio_descriptors) { in spi_register_controller()
2452 status = spi_get_gpio_descs(ctlr); in spi_register_controller()
2459 ctlr->mode_bits |= SPI_CS_HIGH; in spi_register_controller()
2462 status = of_spi_get_gpio_numbers(ctlr); in spi_register_controller()
2472 if (!ctlr->num_chipselect) in spi_register_controller()
2475 status = device_add(&ctlr->dev); in spi_register_controller()
2479 idr_remove(&spi_master_idr, ctlr->bus_num); in spi_register_controller()
2484 spi_controller_is_slave(ctlr) ? "slave" : "master", in spi_register_controller()
2485 dev_name(&ctlr->dev)); in spi_register_controller()
2492 if (ctlr->transfer) { in spi_register_controller()
2494 } else if (ctlr->transfer_one || ctlr->transfer_one_message) { in spi_register_controller()
2495 status = spi_controller_initialize_queue(ctlr); in spi_register_controller()
2497 device_del(&ctlr->dev); in spi_register_controller()
2500 idr_remove(&spi_master_idr, ctlr->bus_num); in spi_register_controller()
2506 spin_lock_init(&ctlr->statistics.lock); in spi_register_controller()
2509 list_add_tail(&ctlr->list, &spi_controller_list); in spi_register_controller()
2511 spi_match_controller_to_boardinfo(ctlr, &bi->board_info); in spi_register_controller()
2515 of_register_spi_devices(ctlr); in spi_register_controller()
2516 acpi_register_spi_devices(ctlr); in spi_register_controller()
2541 struct spi_controller *ctlr) in devm_spi_register_controller() argument
2550 ret = spi_register_controller(ctlr); in devm_spi_register_controller()
2552 *ptr = ctlr; in devm_spi_register_controller()
2580 void spi_unregister_controller(struct spi_controller *ctlr) in spi_unregister_controller() argument
2583 int id = ctlr->bus_num; in spi_unregister_controller()
2589 if (ctlr->queued) { in spi_unregister_controller()
2590 if (spi_destroy_queue(ctlr)) in spi_unregister_controller()
2591 dev_err(&ctlr->dev, "queue remove failed\n"); in spi_unregister_controller()
2594 list_del(&ctlr->list); in spi_unregister_controller()
2597 device_for_each_child(&ctlr->dev, NULL, __unregister); in spi_unregister_controller()
2598 device_unregister(&ctlr->dev); in spi_unregister_controller()
2601 if (found == ctlr) in spi_unregister_controller()
2607 int spi_controller_suspend(struct spi_controller *ctlr) in spi_controller_suspend() argument
2612 if (!ctlr->queued) in spi_controller_suspend()
2615 ret = spi_stop_queue(ctlr); in spi_controller_suspend()
2617 dev_err(&ctlr->dev, "queue stop failed\n"); in spi_controller_suspend()
2623 int spi_controller_resume(struct spi_controller *ctlr) in spi_controller_resume() argument
2627 if (!ctlr->queued) in spi_controller_resume()
2630 ret = spi_start_queue(ctlr); in spi_controller_resume()
2632 dev_err(&ctlr->dev, "queue restart failed\n"); in spi_controller_resume()
2640 struct spi_controller *ctlr; in __spi_controller_match() local
2643 ctlr = container_of(dev, struct spi_controller, dev); in __spi_controller_match()
2644 return ctlr->bus_num == *bus_num; in __spi_controller_match()
2662 struct spi_controller *ctlr = NULL; in spi_busnum_to_master() local
2667 ctlr = container_of(dev, struct spi_controller, dev); in spi_busnum_to_master()
2669 return ctlr; in spi_busnum_to_master()
2744 void spi_res_release(struct spi_controller *ctlr, struct spi_message *message) in spi_res_release() argument
2750 res->release(ctlr, message, res->data); in spi_res_release()
2763 static void __spi_replace_transfers_release(struct spi_controller *ctlr, in __spi_replace_transfers_release() argument
2772 rxfer->release(ctlr, msg, res); in __spi_replace_transfers_release()
2891 static int __spi_split_transfer_maxsize(struct spi_controller *ctlr, in __spi_split_transfer_maxsize() argument
2948 SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics, in __spi_split_transfer_maxsize()
2967 int spi_split_transfers_maxsize(struct spi_controller *ctlr, in spi_split_transfers_maxsize() argument
2983 ret = __spi_split_transfer_maxsize(ctlr, msg, &xfer, in spi_split_transfers_maxsize()
3000 static int __spi_validate_bits_per_word(struct spi_controller *ctlr, in __spi_validate_bits_per_word() argument
3003 if (ctlr->bits_per_word_mask) { in __spi_validate_bits_per_word()
3007 if (!(ctlr->bits_per_word_mask & SPI_BPW_MASK(bits_per_word))) in __spi_validate_bits_per_word()
3131 struct spi_controller *ctlr = spi->controller; in __spi_validate() local
3144 if ((spi->mode & SPI_CS_WORD) && (!(ctlr->mode_bits & SPI_CS_WORD) || in __spi_validate()
3155 ret = spi_split_transfers_maxsize(ctlr, message, maxsize, in __spi_validate()
3173 if ((ctlr->flags & SPI_CONTROLLER_HALF_DUPLEX) || in __spi_validate()
3175 unsigned flags = ctlr->flags; in __spi_validate()
3205 if (ctlr->max_speed_hz && xfer->speed_hz > ctlr->max_speed_hz) in __spi_validate()
3206 xfer->speed_hz = ctlr->max_speed_hz; in __spi_validate()
3208 if (__spi_validate_bits_per_word(ctlr, xfer->bits_per_word)) in __spi_validate()
3226 if (xfer->speed_hz && ctlr->min_speed_hz && in __spi_validate()
3227 xfer->speed_hz < ctlr->min_speed_hz) in __spi_validate()
3275 struct spi_controller *ctlr = spi->controller; in __spi_async() local
3281 if (!ctlr->transfer) in __spi_async()
3286 SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics, spi_async); in __spi_async()
3291 return ctlr->transfer(spi, message); in __spi_async()
3327 struct spi_controller *ctlr = spi->controller; in spi_async() local
3335 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in spi_async()
3337 if (ctlr->bus_lock_flag) in spi_async()
3342 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in spi_async()
3381 struct spi_controller *ctlr = spi->controller; in spi_async_locked() local
3389 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in spi_async_locked()
3393 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in spi_async_locked()
3416 struct spi_controller *ctlr = spi->controller; in __spi_sync() local
3427 SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics, spi_sync); in __spi_sync()
3435 if (ctlr->transfer == spi_queued_transfer) { in __spi_sync()
3436 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in __spi_sync()
3442 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in __spi_sync()
3451 if (ctlr->transfer == spi_queued_transfer) { in __spi_sync()
3452 SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics, in __spi_sync()
3456 __spi_pump_messages(ctlr, false); in __spi_sync()
3536 int spi_bus_lock(struct spi_controller *ctlr) in spi_bus_lock() argument
3540 mutex_lock(&ctlr->bus_lock_mutex); in spi_bus_lock()
3542 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in spi_bus_lock()
3543 ctlr->bus_lock_flag = 1; in spi_bus_lock()
3544 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in spi_bus_lock()
3565 int spi_bus_unlock(struct spi_controller *ctlr) in spi_bus_unlock() argument
3567 ctlr->bus_lock_flag = 0; in spi_bus_unlock()
3569 mutex_unlock(&ctlr->bus_lock_mutex); in spi_bus_unlock()
3688 struct spi_controller *ctlr; in of_spi_notify() local
3693 ctlr = of_find_spi_controller_by_node(rd->dn->parent); in of_spi_notify()
3694 if (ctlr == NULL) in of_spi_notify()
3698 put_device(&ctlr->dev); in of_spi_notify()
3702 spi = of_register_spi_device(ctlr, rd->dn); in of_spi_notify()
3703 put_device(&ctlr->dev); in of_spi_notify()
3774 struct spi_controller *ctlr; in acpi_spi_notify() local
3779 ctlr = acpi_spi_find_controller_by_adev(adev->parent); in acpi_spi_notify()
3780 if (!ctlr) in acpi_spi_notify()
3783 acpi_register_spi_device(ctlr, adev); in acpi_spi_notify()
3784 put_device(&ctlr->dev); in acpi_spi_notify()