Lines Matching refs:ctlr
85 struct spi_controller *ctlr = container_of(dev, \
87 return spi_statistics_##field##_show(&ctlr->statistics, buf); \
255 struct spi_controller *ctlr) in spi_statistics_add_transfer_stats() argument
270 (xfer->tx_buf != ctlr->dummy_tx)) in spi_statistics_add_transfer_stats()
273 (xfer->rx_buf != ctlr->dummy_rx)) in spi_statistics_add_transfer_stats()
452 struct spi_device *spi_alloc_device(struct spi_controller *ctlr) in spi_alloc_device() argument
456 if (!spi_controller_get(ctlr)) in spi_alloc_device()
461 spi_controller_put(ctlr); in spi_alloc_device()
465 spi->master = spi->controller = ctlr; in spi_alloc_device()
466 spi->dev.parent = &ctlr->dev; in spi_alloc_device()
514 struct spi_controller *ctlr = spi->controller; in spi_add_device() local
515 struct device *dev = ctlr->dev.parent; in spi_add_device()
519 if (spi->chip_select >= ctlr->num_chipselect) { in spi_add_device()
521 ctlr->num_chipselect); in spi_add_device()
541 if (ctlr->cs_gpios) in spi_add_device()
542 spi->cs_gpio = ctlr->cs_gpios[spi->chip_select]; in spi_add_device()
583 struct spi_device *spi_new_device(struct spi_controller *ctlr, in spi_new_device() argument
596 proxy = spi_alloc_device(ctlr); in spi_new_device()
614 dev_err(&ctlr->dev, in spi_new_device()
658 static void spi_match_controller_to_boardinfo(struct spi_controller *ctlr, in spi_match_controller_to_boardinfo() argument
663 if (ctlr->bus_num != bi->bus_num) in spi_match_controller_to_boardinfo()
666 dev = spi_new_device(ctlr, bi); in spi_match_controller_to_boardinfo()
668 dev_err(ctlr->dev.parent, "can't create new device for %s\n", in spi_match_controller_to_boardinfo()
707 struct spi_controller *ctlr; in spi_register_board_info() local
719 list_for_each_entry(ctlr, &spi_controller_list, list) in spi_register_board_info()
720 spi_match_controller_to_boardinfo(ctlr, in spi_register_board_info()
747 int spi_map_buf(struct spi_controller *ctlr, struct device *dev, in spi_map_buf() argument
772 desc_len = min_t(int, max_seg_size, ctlr->max_dma_len); in spi_map_buf()
828 void spi_unmap_buf(struct spi_controller *ctlr, struct device *dev, in spi_unmap_buf() argument
837 static int __spi_map_msg(struct spi_controller *ctlr, struct spi_message *msg) in __spi_map_msg() argument
843 if (!ctlr->can_dma) in __spi_map_msg()
846 if (ctlr->dma_tx) in __spi_map_msg()
847 tx_dev = ctlr->dma_tx->device->dev; in __spi_map_msg()
849 tx_dev = ctlr->dev.parent; in __spi_map_msg()
851 if (ctlr->dma_rx) in __spi_map_msg()
852 rx_dev = ctlr->dma_rx->device->dev; in __spi_map_msg()
854 rx_dev = ctlr->dev.parent; in __spi_map_msg()
857 if (!ctlr->can_dma(ctlr, msg->spi, xfer)) in __spi_map_msg()
861 ret = spi_map_buf(ctlr, tx_dev, &xfer->tx_sg, in __spi_map_msg()
869 ret = spi_map_buf(ctlr, rx_dev, &xfer->rx_sg, in __spi_map_msg()
873 spi_unmap_buf(ctlr, tx_dev, &xfer->tx_sg, in __spi_map_msg()
880 ctlr->cur_msg_mapped = true; in __spi_map_msg()
885 static int __spi_unmap_msg(struct spi_controller *ctlr, struct spi_message *msg) in __spi_unmap_msg() argument
890 if (!ctlr->cur_msg_mapped || !ctlr->can_dma) in __spi_unmap_msg()
893 if (ctlr->dma_tx) in __spi_unmap_msg()
894 tx_dev = ctlr->dma_tx->device->dev; in __spi_unmap_msg()
896 tx_dev = ctlr->dev.parent; in __spi_unmap_msg()
898 if (ctlr->dma_rx) in __spi_unmap_msg()
899 rx_dev = ctlr->dma_rx->device->dev; in __spi_unmap_msg()
901 rx_dev = ctlr->dev.parent; in __spi_unmap_msg()
904 if (!ctlr->can_dma(ctlr, msg->spi, xfer)) in __spi_unmap_msg()
907 spi_unmap_buf(ctlr, rx_dev, &xfer->rx_sg, DMA_FROM_DEVICE); in __spi_unmap_msg()
908 spi_unmap_buf(ctlr, tx_dev, &xfer->tx_sg, DMA_TO_DEVICE); in __spi_unmap_msg()
914 static inline int __spi_map_msg(struct spi_controller *ctlr, in __spi_map_msg() argument
920 static inline int __spi_unmap_msg(struct spi_controller *ctlr, in __spi_unmap_msg() argument
927 static inline int spi_unmap_msg(struct spi_controller *ctlr, in spi_unmap_msg() argument
937 if (xfer->tx_buf == ctlr->dummy_tx) in spi_unmap_msg()
939 if (xfer->rx_buf == ctlr->dummy_rx) in spi_unmap_msg()
943 return __spi_unmap_msg(ctlr, msg); in spi_unmap_msg()
946 static int spi_map_msg(struct spi_controller *ctlr, struct spi_message *msg) in spi_map_msg() argument
952 if (ctlr->flags & (SPI_CONTROLLER_MUST_RX | SPI_CONTROLLER_MUST_TX)) { in spi_map_msg()
957 if ((ctlr->flags & SPI_CONTROLLER_MUST_TX) && in spi_map_msg()
960 if ((ctlr->flags & SPI_CONTROLLER_MUST_RX) && in spi_map_msg()
966 tmp = krealloc(ctlr->dummy_tx, max_tx, in spi_map_msg()
970 ctlr->dummy_tx = tmp; in spi_map_msg()
975 tmp = krealloc(ctlr->dummy_rx, max_rx, in spi_map_msg()
979 ctlr->dummy_rx = tmp; in spi_map_msg()
986 xfer->tx_buf = ctlr->dummy_tx; in spi_map_msg()
988 xfer->rx_buf = ctlr->dummy_rx; in spi_map_msg()
993 return __spi_map_msg(ctlr, msg); in spi_map_msg()
1003 static int spi_transfer_one_message(struct spi_controller *ctlr, in spi_transfer_one_message() argument
1010 struct spi_statistics *statm = &ctlr->statistics; in spi_transfer_one_message()
1021 spi_statistics_add_transfer_stats(statm, xfer, ctlr); in spi_transfer_one_message()
1022 spi_statistics_add_transfer_stats(stats, xfer, ctlr); in spi_transfer_one_message()
1025 reinit_completion(&ctlr->xfer_completion); in spi_transfer_one_message()
1027 ret = ctlr->transfer_one(ctlr, msg->spi, xfer); in spi_transfer_one_message()
1047 ms = wait_for_completion_timeout(&ctlr->xfer_completion, in spi_transfer_one_message()
1102 if (msg->status && ctlr->handle_err) in spi_transfer_one_message()
1103 ctlr->handle_err(ctlr, msg); in spi_transfer_one_message()
1105 spi_res_release(ctlr, msg); in spi_transfer_one_message()
1107 spi_finalize_current_message(ctlr); in spi_transfer_one_message()
1120 void spi_finalize_current_transfer(struct spi_controller *ctlr) in spi_finalize_current_transfer() argument
1122 complete(&ctlr->xfer_completion); in spi_finalize_current_transfer()
1139 static void __spi_pump_messages(struct spi_controller *ctlr, bool in_kthread) in __spi_pump_messages() argument
1146 spin_lock_irqsave(&ctlr->queue_lock, flags); in __spi_pump_messages()
1149 if (ctlr->cur_msg) { in __spi_pump_messages()
1150 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1155 if (ctlr->idling) { in __spi_pump_messages()
1156 kthread_queue_work(&ctlr->kworker, &ctlr->pump_messages); in __spi_pump_messages()
1157 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1162 if (list_empty(&ctlr->queue) || !ctlr->running) { in __spi_pump_messages()
1163 if (!ctlr->busy) { in __spi_pump_messages()
1164 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1170 kthread_queue_work(&ctlr->kworker, in __spi_pump_messages()
1171 &ctlr->pump_messages); in __spi_pump_messages()
1172 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1176 ctlr->busy = false; in __spi_pump_messages()
1177 ctlr->idling = true; in __spi_pump_messages()
1178 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1180 kfree(ctlr->dummy_rx); in __spi_pump_messages()
1181 ctlr->dummy_rx = NULL; in __spi_pump_messages()
1182 kfree(ctlr->dummy_tx); in __spi_pump_messages()
1183 ctlr->dummy_tx = NULL; in __spi_pump_messages()
1184 if (ctlr->unprepare_transfer_hardware && in __spi_pump_messages()
1185 ctlr->unprepare_transfer_hardware(ctlr)) in __spi_pump_messages()
1186 dev_err(&ctlr->dev, in __spi_pump_messages()
1188 if (ctlr->auto_runtime_pm) { in __spi_pump_messages()
1189 pm_runtime_mark_last_busy(ctlr->dev.parent); in __spi_pump_messages()
1190 pm_runtime_put_autosuspend(ctlr->dev.parent); in __spi_pump_messages()
1192 trace_spi_controller_idle(ctlr); in __spi_pump_messages()
1194 spin_lock_irqsave(&ctlr->queue_lock, flags); in __spi_pump_messages()
1195 ctlr->idling = false; in __spi_pump_messages()
1196 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1201 ctlr->cur_msg = in __spi_pump_messages()
1202 list_first_entry(&ctlr->queue, struct spi_message, queue); in __spi_pump_messages()
1204 list_del_init(&ctlr->cur_msg->queue); in __spi_pump_messages()
1205 if (ctlr->busy) in __spi_pump_messages()
1208 ctlr->busy = true; in __spi_pump_messages()
1209 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1211 mutex_lock(&ctlr->io_mutex); in __spi_pump_messages()
1213 if (!was_busy && ctlr->auto_runtime_pm) { in __spi_pump_messages()
1214 ret = pm_runtime_get_sync(ctlr->dev.parent); in __spi_pump_messages()
1216 pm_runtime_put_noidle(ctlr->dev.parent); in __spi_pump_messages()
1217 dev_err(&ctlr->dev, "Failed to power device: %d\n", in __spi_pump_messages()
1219 mutex_unlock(&ctlr->io_mutex); in __spi_pump_messages()
1225 trace_spi_controller_busy(ctlr); in __spi_pump_messages()
1227 if (!was_busy && ctlr->prepare_transfer_hardware) { in __spi_pump_messages()
1228 ret = ctlr->prepare_transfer_hardware(ctlr); in __spi_pump_messages()
1230 dev_err(&ctlr->dev, in __spi_pump_messages()
1233 if (ctlr->auto_runtime_pm) in __spi_pump_messages()
1234 pm_runtime_put(ctlr->dev.parent); in __spi_pump_messages()
1235 mutex_unlock(&ctlr->io_mutex); in __spi_pump_messages()
1240 trace_spi_message_start(ctlr->cur_msg); in __spi_pump_messages()
1242 if (ctlr->prepare_message) { in __spi_pump_messages()
1243 ret = ctlr->prepare_message(ctlr, ctlr->cur_msg); in __spi_pump_messages()
1245 dev_err(&ctlr->dev, "failed to prepare message: %d\n", in __spi_pump_messages()
1247 ctlr->cur_msg->status = ret; in __spi_pump_messages()
1248 spi_finalize_current_message(ctlr); in __spi_pump_messages()
1251 ctlr->cur_msg_prepared = true; in __spi_pump_messages()
1254 ret = spi_map_msg(ctlr, ctlr->cur_msg); in __spi_pump_messages()
1256 ctlr->cur_msg->status = ret; in __spi_pump_messages()
1257 spi_finalize_current_message(ctlr); in __spi_pump_messages()
1261 ret = ctlr->transfer_one_message(ctlr, ctlr->cur_msg); in __spi_pump_messages()
1263 dev_err(&ctlr->dev, in __spi_pump_messages()
1269 mutex_unlock(&ctlr->io_mutex); in __spi_pump_messages()
1282 struct spi_controller *ctlr = in spi_pump_messages() local
1285 __spi_pump_messages(ctlr, true); in spi_pump_messages()
1288 static int spi_init_queue(struct spi_controller *ctlr) in spi_init_queue() argument
1292 ctlr->running = false; in spi_init_queue()
1293 ctlr->busy = false; in spi_init_queue()
1295 kthread_init_worker(&ctlr->kworker); in spi_init_queue()
1296 ctlr->kworker_task = kthread_run(kthread_worker_fn, &ctlr->kworker, in spi_init_queue()
1297 "%s", dev_name(&ctlr->dev)); in spi_init_queue()
1298 if (IS_ERR(ctlr->kworker_task)) { in spi_init_queue()
1299 dev_err(&ctlr->dev, "failed to create message pump task\n"); in spi_init_queue()
1300 return PTR_ERR(ctlr->kworker_task); in spi_init_queue()
1302 kthread_init_work(&ctlr->pump_messages, spi_pump_messages); in spi_init_queue()
1311 if (ctlr->rt) { in spi_init_queue()
1312 dev_info(&ctlr->dev, in spi_init_queue()
1314 sched_setscheduler(ctlr->kworker_task, SCHED_FIFO, ¶m); in spi_init_queue()
1330 struct spi_message *spi_get_next_queued_message(struct spi_controller *ctlr) in spi_get_next_queued_message() argument
1336 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_get_next_queued_message()
1337 next = list_first_entry_or_null(&ctlr->queue, struct spi_message, in spi_get_next_queued_message()
1339 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_get_next_queued_message()
1352 void spi_finalize_current_message(struct spi_controller *ctlr) in spi_finalize_current_message() argument
1358 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_finalize_current_message()
1359 mesg = ctlr->cur_msg; in spi_finalize_current_message()
1360 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_finalize_current_message()
1362 spi_unmap_msg(ctlr, mesg); in spi_finalize_current_message()
1364 if (ctlr->cur_msg_prepared && ctlr->unprepare_message) { in spi_finalize_current_message()
1365 ret = ctlr->unprepare_message(ctlr, mesg); in spi_finalize_current_message()
1367 dev_err(&ctlr->dev, "failed to unprepare message: %d\n", in spi_finalize_current_message()
1372 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_finalize_current_message()
1373 ctlr->cur_msg = NULL; in spi_finalize_current_message()
1374 ctlr->cur_msg_prepared = false; in spi_finalize_current_message()
1375 kthread_queue_work(&ctlr->kworker, &ctlr->pump_messages); in spi_finalize_current_message()
1376 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_finalize_current_message()
1386 static int spi_start_queue(struct spi_controller *ctlr) in spi_start_queue() argument
1390 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_start_queue()
1392 if (ctlr->running || ctlr->busy) { in spi_start_queue()
1393 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_start_queue()
1397 ctlr->running = true; in spi_start_queue()
1398 ctlr->cur_msg = NULL; in spi_start_queue()
1399 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_start_queue()
1401 kthread_queue_work(&ctlr->kworker, &ctlr->pump_messages); in spi_start_queue()
1406 static int spi_stop_queue(struct spi_controller *ctlr) in spi_stop_queue() argument
1412 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_stop_queue()
1420 while ((!list_empty(&ctlr->queue) || ctlr->busy) && limit--) { in spi_stop_queue()
1421 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_stop_queue()
1423 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_stop_queue()
1426 if (!list_empty(&ctlr->queue) || ctlr->busy) in spi_stop_queue()
1429 ctlr->running = false; in spi_stop_queue()
1431 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_stop_queue()
1434 dev_warn(&ctlr->dev, "could not stop message queue\n"); in spi_stop_queue()
1440 static int spi_destroy_queue(struct spi_controller *ctlr) in spi_destroy_queue() argument
1444 ret = spi_stop_queue(ctlr); in spi_destroy_queue()
1453 dev_err(&ctlr->dev, "problem destroying queue\n"); in spi_destroy_queue()
1457 kthread_flush_worker(&ctlr->kworker); in spi_destroy_queue()
1458 kthread_stop(ctlr->kworker_task); in spi_destroy_queue()
1467 struct spi_controller *ctlr = spi->controller; in __spi_queued_transfer() local
1470 spin_lock_irqsave(&ctlr->queue_lock, flags); in __spi_queued_transfer()
1472 if (!ctlr->running) { in __spi_queued_transfer()
1473 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_queued_transfer()
1479 list_add_tail(&msg->queue, &ctlr->queue); in __spi_queued_transfer()
1480 if (!ctlr->busy && need_pump) in __spi_queued_transfer()
1481 kthread_queue_work(&ctlr->kworker, &ctlr->pump_messages); in __spi_queued_transfer()
1483 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_queued_transfer()
1499 static int spi_controller_initialize_queue(struct spi_controller *ctlr) in spi_controller_initialize_queue() argument
1503 ctlr->transfer = spi_queued_transfer; in spi_controller_initialize_queue()
1504 if (!ctlr->transfer_one_message) in spi_controller_initialize_queue()
1505 ctlr->transfer_one_message = spi_transfer_one_message; in spi_controller_initialize_queue()
1508 ret = spi_init_queue(ctlr); in spi_controller_initialize_queue()
1510 dev_err(&ctlr->dev, "problem initializing queue\n"); in spi_controller_initialize_queue()
1513 ctlr->queued = true; in spi_controller_initialize_queue()
1514 ret = spi_start_queue(ctlr); in spi_controller_initialize_queue()
1516 dev_err(&ctlr->dev, "problem starting queue\n"); in spi_controller_initialize_queue()
1523 spi_destroy_queue(ctlr); in spi_controller_initialize_queue()
1538 void spi_flush_queue(struct spi_controller *ctlr) in spi_flush_queue() argument
1540 if (ctlr->transfer == spi_queued_transfer) in spi_flush_queue()
1541 __spi_pump_messages(ctlr, false); in spi_flush_queue()
1547 static int of_spi_parse_dt(struct spi_controller *ctlr, struct spi_device *spi, in of_spi_parse_dt() argument
1577 dev_warn(&ctlr->dev, in of_spi_parse_dt()
1595 dev_warn(&ctlr->dev, in of_spi_parse_dt()
1602 if (spi_controller_is_slave(ctlr)) { in of_spi_parse_dt()
1604 dev_err(&ctlr->dev, "%pOF is not called 'slave'\n", in of_spi_parse_dt()
1614 dev_err(&ctlr->dev, "%pOF has no valid 'reg' property (%d)\n", in of_spi_parse_dt()
1623 dev_err(&ctlr->dev, in of_spi_parse_dt()
1633 of_register_spi_device(struct spi_controller *ctlr, struct device_node *nc) in of_register_spi_device() argument
1639 spi = spi_alloc_device(ctlr); in of_register_spi_device()
1641 dev_err(&ctlr->dev, "spi_device alloc error for %pOF\n", nc); in of_register_spi_device()
1650 dev_err(&ctlr->dev, "cannot find modalias for %pOF\n", nc); in of_register_spi_device()
1654 rc = of_spi_parse_dt(ctlr, spi, nc); in of_register_spi_device()
1665 dev_err(&ctlr->dev, "spi_device register error %pOF\n", nc); in of_register_spi_device()
1685 static void of_register_spi_devices(struct spi_controller *ctlr) in of_register_spi_devices() argument
1690 if (!ctlr->dev.of_node) in of_register_spi_devices()
1693 for_each_available_child_of_node(ctlr->dev.of_node, nc) { in of_register_spi_devices()
1696 spi = of_register_spi_device(ctlr, nc); in of_register_spi_devices()
1698 dev_warn(&ctlr->dev, in of_register_spi_devices()
1705 static void of_register_spi_devices(struct spi_controller *ctlr) { } in of_register_spi_devices() argument
1741 struct spi_controller *ctlr = spi->controller; in acpi_spi_add_resource() local
1755 if (ctlr->fw_translate_cs) { in acpi_spi_add_resource()
1756 int cs = ctlr->fw_translate_cs(ctlr, in acpi_spi_add_resource()
1785 static acpi_status acpi_register_spi_device(struct spi_controller *ctlr, in acpi_register_spi_device() argument
1796 spi = spi_alloc_device(ctlr); in acpi_register_spi_device()
1798 dev_err(&ctlr->dev, "failed to allocate SPI device for %s\n", in acpi_register_spi_device()
1829 dev_err(&ctlr->dev, "failed to add SPI device %s from ACPI\n", in acpi_register_spi_device()
1840 struct spi_controller *ctlr = data; in acpi_spi_add_device() local
1846 return acpi_register_spi_device(ctlr, adev); in acpi_spi_add_device()
1849 static void acpi_register_spi_devices(struct spi_controller *ctlr) in acpi_register_spi_devices() argument
1854 handle = ACPI_HANDLE(ctlr->dev.parent); in acpi_register_spi_devices()
1859 acpi_spi_add_device, NULL, ctlr, NULL); in acpi_register_spi_devices()
1861 dev_warn(&ctlr->dev, "failed to enumerate SPI slaves\n"); in acpi_register_spi_devices()
1864 static inline void acpi_register_spi_devices(struct spi_controller *ctlr) {} in acpi_register_spi_devices() argument
1869 struct spi_controller *ctlr; in spi_controller_release() local
1871 ctlr = container_of(dev, struct spi_controller, dev); in spi_controller_release()
1872 kfree(ctlr); in spi_controller_release()
1890 struct spi_controller *ctlr = spi->controller; in spi_slave_abort() local
1892 if (spi_controller_is_slave(ctlr) && ctlr->slave_abort) in spi_slave_abort()
1893 return ctlr->slave_abort(ctlr); in spi_slave_abort()
1907 struct spi_controller *ctlr = container_of(dev, struct spi_controller, in spi_slave_show() local
1911 child = device_find_child(&ctlr->dev, NULL, match_true); in spi_slave_show()
1920 struct spi_controller *ctlr = container_of(dev, struct spi_controller, in spi_slave_store() local
1931 child = device_find_child(&ctlr->dev, NULL, match_true); in spi_slave_store()
1940 spi = spi_alloc_device(ctlr); in spi_slave_store()
2009 struct spi_controller *ctlr; in __spi_alloc_controller() local
2014 ctlr = kzalloc(size + sizeof(*ctlr), GFP_KERNEL); in __spi_alloc_controller()
2015 if (!ctlr) in __spi_alloc_controller()
2018 device_initialize(&ctlr->dev); in __spi_alloc_controller()
2019 ctlr->bus_num = -1; in __spi_alloc_controller()
2020 ctlr->num_chipselect = 1; in __spi_alloc_controller()
2021 ctlr->slave = slave; in __spi_alloc_controller()
2023 ctlr->dev.class = &spi_slave_class; in __spi_alloc_controller()
2025 ctlr->dev.class = &spi_master_class; in __spi_alloc_controller()
2026 ctlr->dev.parent = dev; in __spi_alloc_controller()
2027 pm_suspend_ignore_children(&ctlr->dev, true); in __spi_alloc_controller()
2028 spi_controller_set_devdata(ctlr, &ctlr[1]); in __spi_alloc_controller()
2030 return ctlr; in __spi_alloc_controller()
2035 static int of_spi_register_master(struct spi_controller *ctlr) in of_spi_register_master() argument
2038 struct device_node *np = ctlr->dev.of_node; in of_spi_register_master()
2044 ctlr->num_chipselect = max_t(int, nb, ctlr->num_chipselect); in of_spi_register_master()
2052 cs = devm_kcalloc(&ctlr->dev, ctlr->num_chipselect, sizeof(int), in of_spi_register_master()
2054 ctlr->cs_gpios = cs; in of_spi_register_master()
2056 if (!ctlr->cs_gpios) in of_spi_register_master()
2059 for (i = 0; i < ctlr->num_chipselect; i++) in of_spi_register_master()
2068 static int of_spi_register_master(struct spi_controller *ctlr) in of_spi_register_master() argument
2074 static int spi_controller_check_ops(struct spi_controller *ctlr) in spi_controller_check_ops() argument
2083 if (ctlr->mem_ops) { in spi_controller_check_ops()
2084 if (!ctlr->mem_ops->exec_op) in spi_controller_check_ops()
2086 } else if (!ctlr->transfer && !ctlr->transfer_one && in spi_controller_check_ops()
2087 !ctlr->transfer_one_message) { in spi_controller_check_ops()
2117 int spi_register_controller(struct spi_controller *ctlr) in spi_register_controller() argument
2119 struct device *dev = ctlr->dev.parent; in spi_register_controller()
2131 status = spi_controller_check_ops(ctlr); in spi_register_controller()
2135 if (!spi_controller_is_slave(ctlr)) { in spi_register_controller()
2136 status = of_spi_register_master(ctlr); in spi_register_controller()
2144 if (ctlr->num_chipselect == 0) in spi_register_controller()
2146 if (ctlr->bus_num >= 0) { in spi_register_controller()
2149 id = idr_alloc(&spi_master_idr, ctlr, ctlr->bus_num, in spi_register_controller()
2150 ctlr->bus_num + 1, GFP_KERNEL); in spi_register_controller()
2154 ctlr->bus_num = id; in spi_register_controller()
2155 } else if (ctlr->dev.of_node) { in spi_register_controller()
2157 id = of_alias_get_id(ctlr->dev.of_node, "spi"); in spi_register_controller()
2159 ctlr->bus_num = id; in spi_register_controller()
2161 id = idr_alloc(&spi_master_idr, ctlr, ctlr->bus_num, in spi_register_controller()
2162 ctlr->bus_num + 1, GFP_KERNEL); in spi_register_controller()
2168 if (ctlr->bus_num < 0) { in spi_register_controller()
2176 id = idr_alloc(&spi_master_idr, ctlr, first_dynamic, in spi_register_controller()
2181 ctlr->bus_num = id; in spi_register_controller()
2183 INIT_LIST_HEAD(&ctlr->queue); in spi_register_controller()
2184 spin_lock_init(&ctlr->queue_lock); in spi_register_controller()
2185 spin_lock_init(&ctlr->bus_lock_spinlock); in spi_register_controller()
2186 mutex_init(&ctlr->bus_lock_mutex); in spi_register_controller()
2187 mutex_init(&ctlr->io_mutex); in spi_register_controller()
2188 ctlr->bus_lock_flag = 0; in spi_register_controller()
2189 init_completion(&ctlr->xfer_completion); in spi_register_controller()
2190 if (!ctlr->max_dma_len) in spi_register_controller()
2191 ctlr->max_dma_len = INT_MAX; in spi_register_controller()
2196 dev_set_name(&ctlr->dev, "spi%u", ctlr->bus_num); in spi_register_controller()
2197 status = device_add(&ctlr->dev); in spi_register_controller()
2201 idr_remove(&spi_master_idr, ctlr->bus_num); in spi_register_controller()
2206 spi_controller_is_slave(ctlr) ? "slave" : "master", in spi_register_controller()
2207 dev_name(&ctlr->dev)); in spi_register_controller()
2214 if (ctlr->transfer) { in spi_register_controller()
2216 } else if (ctlr->transfer_one || ctlr->transfer_one_message) { in spi_register_controller()
2217 status = spi_controller_initialize_queue(ctlr); in spi_register_controller()
2219 device_del(&ctlr->dev); in spi_register_controller()
2222 idr_remove(&spi_master_idr, ctlr->bus_num); in spi_register_controller()
2228 spin_lock_init(&ctlr->statistics.lock); in spi_register_controller()
2231 list_add_tail(&ctlr->list, &spi_controller_list); in spi_register_controller()
2233 spi_match_controller_to_boardinfo(ctlr, &bi->board_info); in spi_register_controller()
2237 of_register_spi_devices(ctlr); in spi_register_controller()
2238 acpi_register_spi_devices(ctlr); in spi_register_controller()
2263 struct spi_controller *ctlr) in devm_spi_register_controller() argument
2272 ret = spi_register_controller(ctlr); in devm_spi_register_controller()
2274 *ptr = ctlr; in devm_spi_register_controller()
2302 void spi_unregister_controller(struct spi_controller *ctlr) in spi_unregister_controller() argument
2305 int id = ctlr->bus_num; in spi_unregister_controller()
2312 if (ctlr->queued) { in spi_unregister_controller()
2313 if (spi_destroy_queue(ctlr)) in spi_unregister_controller()
2314 dev_err(&ctlr->dev, "queue remove failed\n"); in spi_unregister_controller()
2317 list_del(&ctlr->list); in spi_unregister_controller()
2320 dummy = device_for_each_child(&ctlr->dev, NULL, __unregister); in spi_unregister_controller()
2321 device_unregister(&ctlr->dev); in spi_unregister_controller()
2324 if (found == ctlr) in spi_unregister_controller()
2330 int spi_controller_suspend(struct spi_controller *ctlr) in spi_controller_suspend() argument
2335 if (!ctlr->queued) in spi_controller_suspend()
2338 ret = spi_stop_queue(ctlr); in spi_controller_suspend()
2340 dev_err(&ctlr->dev, "queue stop failed\n"); in spi_controller_suspend()
2346 int spi_controller_resume(struct spi_controller *ctlr) in spi_controller_resume() argument
2350 if (!ctlr->queued) in spi_controller_resume()
2353 ret = spi_start_queue(ctlr); in spi_controller_resume()
2355 dev_err(&ctlr->dev, "queue restart failed\n"); in spi_controller_resume()
2363 struct spi_controller *ctlr; in __spi_controller_match() local
2366 ctlr = container_of(dev, struct spi_controller, dev); in __spi_controller_match()
2367 return ctlr->bus_num == *bus_num; in __spi_controller_match()
2385 struct spi_controller *ctlr = NULL; in spi_busnum_to_master() local
2390 ctlr = container_of(dev, struct spi_controller, dev); in spi_busnum_to_master()
2392 return ctlr; in spi_busnum_to_master()
2467 void spi_res_release(struct spi_controller *ctlr, struct spi_message *message) in spi_res_release() argument
2476 res->release(ctlr, message, res->data); in spi_res_release()
2489 static void __spi_replace_transfers_release(struct spi_controller *ctlr, in __spi_replace_transfers_release() argument
2498 rxfer->release(ctlr, msg, res); in __spi_replace_transfers_release()
2618 static int __spi_split_transfer_maxsize(struct spi_controller *ctlr, in __spi_split_transfer_maxsize() argument
2680 SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics, in __spi_split_transfer_maxsize()
2699 int spi_split_transfers_maxsize(struct spi_controller *ctlr, in spi_split_transfers_maxsize() argument
2715 ret = __spi_split_transfer_maxsize(ctlr, msg, &xfer, in spi_split_transfers_maxsize()
2732 static int __spi_validate_bits_per_word(struct spi_controller *ctlr, in __spi_validate_bits_per_word() argument
2735 if (ctlr->bits_per_word_mask) { in __spi_validate_bits_per_word()
2739 if (!(ctlr->bits_per_word_mask & SPI_BPW_MASK(bits_per_word))) in __spi_validate_bits_per_word()
2834 struct spi_controller *ctlr = spi->controller; in __spi_validate() local
2846 if ((ctlr->flags & SPI_CONTROLLER_HALF_DUPLEX) || in __spi_validate()
2848 unsigned flags = ctlr->flags; in __spi_validate()
2875 xfer->speed_hz = ctlr->max_speed_hz; in __spi_validate()
2877 if (ctlr->max_speed_hz && xfer->speed_hz > ctlr->max_speed_hz) in __spi_validate()
2878 xfer->speed_hz = ctlr->max_speed_hz; in __spi_validate()
2880 if (__spi_validate_bits_per_word(ctlr, xfer->bits_per_word)) in __spi_validate()
2898 if (xfer->speed_hz && ctlr->min_speed_hz && in __spi_validate()
2899 xfer->speed_hz < ctlr->min_speed_hz) in __spi_validate()
2944 struct spi_controller *ctlr = spi->controller; in __spi_async() local
2950 if (!ctlr->transfer) in __spi_async()
2955 SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics, spi_async); in __spi_async()
2960 return ctlr->transfer(spi, message); in __spi_async()
2996 struct spi_controller *ctlr = spi->controller; in spi_async() local
3004 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in spi_async()
3006 if (ctlr->bus_lock_flag) in spi_async()
3011 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in spi_async()
3050 struct spi_controller *ctlr = spi->controller; in spi_async_locked() local
3058 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in spi_async_locked()
3062 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in spi_async_locked()
3085 struct spi_controller *ctlr = spi->controller; in __spi_sync() local
3096 SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics, spi_sync); in __spi_sync()
3104 if (ctlr->transfer == spi_queued_transfer) { in __spi_sync()
3105 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in __spi_sync()
3111 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in __spi_sync()
3120 if (ctlr->transfer == spi_queued_transfer) { in __spi_sync()
3121 SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics, in __spi_sync()
3125 __spi_pump_messages(ctlr, false); in __spi_sync()
3205 int spi_bus_lock(struct spi_controller *ctlr) in spi_bus_lock() argument
3209 mutex_lock(&ctlr->bus_lock_mutex); in spi_bus_lock()
3211 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in spi_bus_lock()
3212 ctlr->bus_lock_flag = 1; in spi_bus_lock()
3213 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in spi_bus_lock()
3234 int spi_bus_unlock(struct spi_controller *ctlr) in spi_bus_unlock() argument
3236 ctlr->bus_lock_flag = 0; in spi_bus_unlock()
3238 mutex_unlock(&ctlr->bus_lock_mutex); in spi_bus_unlock()
3366 struct spi_controller *ctlr; in of_spi_notify() local
3371 ctlr = of_find_spi_controller_by_node(rd->dn->parent); in of_spi_notify()
3372 if (ctlr == NULL) in of_spi_notify()
3376 put_device(&ctlr->dev); in of_spi_notify()
3380 spi = of_register_spi_device(ctlr, rd->dn); in of_spi_notify()
3381 put_device(&ctlr->dev); in of_spi_notify()
3458 struct spi_controller *ctlr; in acpi_spi_notify() local
3463 ctlr = acpi_spi_find_controller_by_adev(adev->parent); in acpi_spi_notify()
3464 if (!ctlr) in acpi_spi_notify()
3467 acpi_register_spi_device(ctlr, adev); in acpi_spi_notify()
3468 put_device(&ctlr->dev); in acpi_spi_notify()