Lines Matching refs:ctlr
119 struct spi_controller *ctlr = container_of(dev, \
121 return spi_statistics_##field##_show(&ctlr->statistics, buf); \
290 struct spi_controller *ctlr) in spi_statistics_add_transfer_stats() argument
305 (xfer->tx_buf != ctlr->dummy_tx)) in spi_statistics_add_transfer_stats()
308 (xfer->rx_buf != ctlr->dummy_rx)) in spi_statistics_add_transfer_stats()
498 struct spi_device *spi_alloc_device(struct spi_controller *ctlr) in spi_alloc_device() argument
502 if (!spi_controller_get(ctlr)) in spi_alloc_device()
507 spi_controller_put(ctlr); in spi_alloc_device()
511 spi->master = spi->controller = ctlr; in spi_alloc_device()
512 spi->dev.parent = &ctlr->dev; in spi_alloc_device()
516 spi->mode = ctlr->buswidth_override_bits; 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()
570 !device_is_registered(&ctlr->dev)) { in __spi_add_device()
575 if (ctlr->cs_gpiods) in __spi_add_device()
576 spi->cs_gpiod = ctlr->cs_gpiods[spi->chip_select]; in __spi_add_device()
577 else if (ctlr->cs_gpios) in __spi_add_device()
578 spi->cs_gpio = ctlr->cs_gpios[spi->chip_select]; in __spi_add_device()
615 struct spi_controller *ctlr = spi->controller; in spi_add_device() local
616 struct device *dev = ctlr->dev.parent; in spi_add_device()
620 if (spi->chip_select >= ctlr->num_chipselect) { in spi_add_device()
622 ctlr->num_chipselect); in spi_add_device()
633 mutex_lock(&ctlr->add_lock); in spi_add_device()
635 mutex_unlock(&ctlr->add_lock); in spi_add_device()
642 struct spi_controller *ctlr = spi->controller; in spi_add_device_locked() local
643 struct device *dev = ctlr->dev.parent; in spi_add_device_locked()
646 if (spi->chip_select >= ctlr->num_chipselect) { in spi_add_device_locked()
648 ctlr->num_chipselect); in spi_add_device_locked()
655 WARN_ON(!mutex_is_locked(&ctlr->add_lock)); in spi_add_device_locked()
673 struct spi_device *spi_new_device(struct spi_controller *ctlr, in spi_new_device() argument
686 proxy = spi_alloc_device(ctlr); in spi_new_device()
704 dev_err(&ctlr->dev, "failed to add software node to '%s': %d\n", in spi_new_device()
748 static void spi_match_controller_to_boardinfo(struct spi_controller *ctlr, in spi_match_controller_to_boardinfo() argument
753 if (ctlr->bus_num != bi->bus_num) in spi_match_controller_to_boardinfo()
756 dev = spi_new_device(ctlr, bi); in spi_match_controller_to_boardinfo()
758 dev_err(ctlr->dev.parent, "can't create new device for %s\n", in spi_match_controller_to_boardinfo()
796 struct spi_controller *ctlr; in spi_register_board_info() local
802 list_for_each_entry(ctlr, &spi_controller_list, list) in spi_register_board_info()
803 spi_match_controller_to_boardinfo(ctlr, in spi_register_board_info()
883 int spi_map_buf(struct spi_controller *ctlr, struct device *dev, in spi_map_buf() argument
908 desc_len = min_t(int, max_seg_size, ctlr->max_dma_len); in spi_map_buf()
964 void spi_unmap_buf(struct spi_controller *ctlr, struct device *dev, in spi_unmap_buf() argument
973 static int __spi_map_msg(struct spi_controller *ctlr, struct spi_message *msg) in __spi_map_msg() argument
979 if (!ctlr->can_dma) in __spi_map_msg()
982 if (ctlr->dma_tx) in __spi_map_msg()
983 tx_dev = ctlr->dma_tx->device->dev; in __spi_map_msg()
984 else if (ctlr->dma_map_dev) in __spi_map_msg()
985 tx_dev = ctlr->dma_map_dev; in __spi_map_msg()
987 tx_dev = ctlr->dev.parent; in __spi_map_msg()
989 if (ctlr->dma_rx) in __spi_map_msg()
990 rx_dev = ctlr->dma_rx->device->dev; in __spi_map_msg()
991 else if (ctlr->dma_map_dev) in __spi_map_msg()
992 rx_dev = ctlr->dma_map_dev; in __spi_map_msg()
994 rx_dev = ctlr->dev.parent; in __spi_map_msg()
997 if (!ctlr->can_dma(ctlr, msg->spi, xfer)) in __spi_map_msg()
1001 ret = spi_map_buf(ctlr, tx_dev, &xfer->tx_sg, in __spi_map_msg()
1009 ret = spi_map_buf(ctlr, rx_dev, &xfer->rx_sg, in __spi_map_msg()
1013 spi_unmap_buf(ctlr, tx_dev, &xfer->tx_sg, in __spi_map_msg()
1020 ctlr->cur_msg_mapped = true; in __spi_map_msg()
1025 static int __spi_unmap_msg(struct spi_controller *ctlr, struct spi_message *msg) in __spi_unmap_msg() argument
1030 if (!ctlr->cur_msg_mapped || !ctlr->can_dma) in __spi_unmap_msg()
1033 if (ctlr->dma_tx) in __spi_unmap_msg()
1034 tx_dev = ctlr->dma_tx->device->dev; in __spi_unmap_msg()
1036 tx_dev = ctlr->dev.parent; in __spi_unmap_msg()
1038 if (ctlr->dma_rx) in __spi_unmap_msg()
1039 rx_dev = ctlr->dma_rx->device->dev; in __spi_unmap_msg()
1041 rx_dev = ctlr->dev.parent; in __spi_unmap_msg()
1044 if (!ctlr->can_dma(ctlr, msg->spi, xfer)) in __spi_unmap_msg()
1047 spi_unmap_buf(ctlr, rx_dev, &xfer->rx_sg, DMA_FROM_DEVICE); in __spi_unmap_msg()
1048 spi_unmap_buf(ctlr, tx_dev, &xfer->tx_sg, DMA_TO_DEVICE); in __spi_unmap_msg()
1051 ctlr->cur_msg_mapped = false; in __spi_unmap_msg()
1056 static inline int __spi_map_msg(struct spi_controller *ctlr, in __spi_map_msg() argument
1062 static inline int __spi_unmap_msg(struct spi_controller *ctlr, in __spi_unmap_msg() argument
1069 static inline int spi_unmap_msg(struct spi_controller *ctlr, in spi_unmap_msg() argument
1079 if (xfer->tx_buf == ctlr->dummy_tx) in spi_unmap_msg()
1081 if (xfer->rx_buf == ctlr->dummy_rx) in spi_unmap_msg()
1085 return __spi_unmap_msg(ctlr, msg); in spi_unmap_msg()
1088 static int spi_map_msg(struct spi_controller *ctlr, struct spi_message *msg) in spi_map_msg() argument
1094 if ((ctlr->flags & (SPI_CONTROLLER_MUST_RX | SPI_CONTROLLER_MUST_TX)) in spi_map_msg()
1100 if ((ctlr->flags & SPI_CONTROLLER_MUST_TX) && in spi_map_msg()
1103 if ((ctlr->flags & SPI_CONTROLLER_MUST_RX) && in spi_map_msg()
1109 tmp = krealloc(ctlr->dummy_tx, max_tx, in spi_map_msg()
1113 ctlr->dummy_tx = tmp; in spi_map_msg()
1118 tmp = krealloc(ctlr->dummy_rx, max_rx, in spi_map_msg()
1122 ctlr->dummy_rx = tmp; in spi_map_msg()
1131 xfer->tx_buf = ctlr->dummy_tx; in spi_map_msg()
1133 xfer->rx_buf = ctlr->dummy_rx; in spi_map_msg()
1138 return __spi_map_msg(ctlr, msg); in spi_map_msg()
1141 static int spi_transfer_wait(struct spi_controller *ctlr, in spi_transfer_wait() argument
1145 struct spi_statistics *statm = &ctlr->statistics; in spi_transfer_wait()
1150 if (spi_controller_is_slave(ctlr)) { in spi_transfer_wait()
1151 if (wait_for_completion_interruptible(&ctlr->xfer_completion)) { in spi_transfer_wait()
1176 ms = wait_for_completion_timeout(&ctlr->xfer_completion, in spi_transfer_wait()
1296 static int spi_transfer_one_message(struct spi_controller *ctlr, in spi_transfer_one_message() argument
1302 struct spi_statistics *statm = &ctlr->statistics; in spi_transfer_one_message()
1313 spi_statistics_add_transfer_stats(statm, xfer, ctlr); in spi_transfer_one_message()
1314 spi_statistics_add_transfer_stats(stats, xfer, ctlr); in spi_transfer_one_message()
1316 if (!ctlr->ptp_sts_supported) { in spi_transfer_one_message()
1322 reinit_completion(&ctlr->xfer_completion); in spi_transfer_one_message()
1325 ret = ctlr->transfer_one(ctlr, msg->spi, xfer); in spi_transfer_one_message()
1327 if (ctlr->cur_msg_mapped && in spi_transfer_one_message()
1329 __spi_unmap_msg(ctlr, msg); in spi_transfer_one_message()
1330 ctlr->fallback = true; in spi_transfer_one_message()
1345 ret = spi_transfer_wait(ctlr, msg, xfer); in spi_transfer_one_message()
1356 if (!ctlr->ptp_sts_supported) { in spi_transfer_one_message()
1389 if (msg->status && ctlr->handle_err) in spi_transfer_one_message()
1390 ctlr->handle_err(ctlr, msg); in spi_transfer_one_message()
1392 spi_finalize_current_message(ctlr); in spi_transfer_one_message()
1405 void spi_finalize_current_transfer(struct spi_controller *ctlr) in spi_finalize_current_transfer() argument
1407 complete(&ctlr->xfer_completion); in spi_finalize_current_transfer()
1411 static void spi_idle_runtime_pm(struct spi_controller *ctlr) in spi_idle_runtime_pm() argument
1413 if (ctlr->auto_runtime_pm) { in spi_idle_runtime_pm()
1414 pm_runtime_mark_last_busy(ctlr->dev.parent); in spi_idle_runtime_pm()
1415 pm_runtime_put_autosuspend(ctlr->dev.parent); in spi_idle_runtime_pm()
1432 static void __spi_pump_messages(struct spi_controller *ctlr, bool in_kthread) in __spi_pump_messages() argument
1441 spin_lock_irqsave(&ctlr->queue_lock, flags); in __spi_pump_messages()
1444 if (ctlr->cur_msg) { in __spi_pump_messages()
1445 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1450 if (ctlr->idling) { in __spi_pump_messages()
1451 kthread_queue_work(ctlr->kworker, &ctlr->pump_messages); in __spi_pump_messages()
1452 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1457 if (list_empty(&ctlr->queue) || !ctlr->running) { in __spi_pump_messages()
1458 if (!ctlr->busy) { in __spi_pump_messages()
1459 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1465 if (!ctlr->dummy_rx && !ctlr->dummy_tx && in __spi_pump_messages()
1466 !ctlr->unprepare_transfer_hardware) { in __spi_pump_messages()
1467 spi_idle_runtime_pm(ctlr); in __spi_pump_messages()
1468 ctlr->busy = false; in __spi_pump_messages()
1469 trace_spi_controller_idle(ctlr); in __spi_pump_messages()
1471 kthread_queue_work(ctlr->kworker, in __spi_pump_messages()
1472 &ctlr->pump_messages); in __spi_pump_messages()
1474 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1478 ctlr->busy = false; in __spi_pump_messages()
1479 ctlr->idling = true; in __spi_pump_messages()
1480 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1482 kfree(ctlr->dummy_rx); in __spi_pump_messages()
1483 ctlr->dummy_rx = NULL; in __spi_pump_messages()
1484 kfree(ctlr->dummy_tx); in __spi_pump_messages()
1485 ctlr->dummy_tx = NULL; in __spi_pump_messages()
1486 if (ctlr->unprepare_transfer_hardware && in __spi_pump_messages()
1487 ctlr->unprepare_transfer_hardware(ctlr)) in __spi_pump_messages()
1488 dev_err(&ctlr->dev, in __spi_pump_messages()
1490 spi_idle_runtime_pm(ctlr); in __spi_pump_messages()
1491 trace_spi_controller_idle(ctlr); in __spi_pump_messages()
1493 spin_lock_irqsave(&ctlr->queue_lock, flags); in __spi_pump_messages()
1494 ctlr->idling = false; in __spi_pump_messages()
1495 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1500 msg = list_first_entry(&ctlr->queue, struct spi_message, queue); in __spi_pump_messages()
1501 ctlr->cur_msg = msg; in __spi_pump_messages()
1504 if (ctlr->busy) in __spi_pump_messages()
1507 ctlr->busy = true; in __spi_pump_messages()
1508 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1510 mutex_lock(&ctlr->io_mutex); in __spi_pump_messages()
1512 if (!was_busy && ctlr->auto_runtime_pm) { in __spi_pump_messages()
1513 ret = pm_runtime_get_sync(ctlr->dev.parent); in __spi_pump_messages()
1515 pm_runtime_put_noidle(ctlr->dev.parent); in __spi_pump_messages()
1516 dev_err(&ctlr->dev, "Failed to power device: %d\n", in __spi_pump_messages()
1518 mutex_unlock(&ctlr->io_mutex); in __spi_pump_messages()
1524 trace_spi_controller_busy(ctlr); in __spi_pump_messages()
1526 if (!was_busy && ctlr->prepare_transfer_hardware) { in __spi_pump_messages()
1527 ret = ctlr->prepare_transfer_hardware(ctlr); in __spi_pump_messages()
1529 dev_err(&ctlr->dev, in __spi_pump_messages()
1533 if (ctlr->auto_runtime_pm) in __spi_pump_messages()
1534 pm_runtime_put(ctlr->dev.parent); in __spi_pump_messages()
1537 spi_finalize_current_message(ctlr); in __spi_pump_messages()
1539 mutex_unlock(&ctlr->io_mutex); in __spi_pump_messages()
1546 if (ctlr->prepare_message) { in __spi_pump_messages()
1547 ret = ctlr->prepare_message(ctlr, msg); in __spi_pump_messages()
1549 dev_err(&ctlr->dev, "failed to prepare message: %d\n", in __spi_pump_messages()
1552 spi_finalize_current_message(ctlr); in __spi_pump_messages()
1555 ctlr->cur_msg_prepared = true; in __spi_pump_messages()
1558 ret = spi_map_msg(ctlr, msg); in __spi_pump_messages()
1561 spi_finalize_current_message(ctlr); in __spi_pump_messages()
1565 if (!ctlr->ptp_sts_supported && !ctlr->transfer_one) { in __spi_pump_messages()
1572 ret = ctlr->transfer_one_message(ctlr, msg); in __spi_pump_messages()
1574 dev_err(&ctlr->dev, in __spi_pump_messages()
1580 mutex_unlock(&ctlr->io_mutex); in __spi_pump_messages()
1593 struct spi_controller *ctlr = in spi_pump_messages() local
1596 __spi_pump_messages(ctlr, true); in spi_pump_messages()
1620 void spi_take_timestamp_pre(struct spi_controller *ctlr, in spi_take_timestamp_pre() argument
1637 local_irq_save(ctlr->irq_flags); in spi_take_timestamp_pre()
1657 void spi_take_timestamp_post(struct spi_controller *ctlr, in spi_take_timestamp_post() argument
1673 local_irq_restore(ctlr->irq_flags); in spi_take_timestamp_post()
1699 static void spi_set_thread_rt(struct spi_controller *ctlr) in spi_set_thread_rt() argument
1701 dev_info(&ctlr->dev, in spi_set_thread_rt()
1703 sched_set_fifo(ctlr->kworker->task); in spi_set_thread_rt()
1706 static int spi_init_queue(struct spi_controller *ctlr) in spi_init_queue() argument
1708 ctlr->running = false; in spi_init_queue()
1709 ctlr->busy = false; in spi_init_queue()
1711 ctlr->kworker = kthread_create_worker(0, dev_name(&ctlr->dev)); in spi_init_queue()
1712 if (IS_ERR(ctlr->kworker)) { in spi_init_queue()
1713 dev_err(&ctlr->dev, "failed to create message pump kworker\n"); in spi_init_queue()
1714 return PTR_ERR(ctlr->kworker); in spi_init_queue()
1717 kthread_init_work(&ctlr->pump_messages, spi_pump_messages); in spi_init_queue()
1726 if (ctlr->rt) in spi_init_queue()
1727 spi_set_thread_rt(ctlr); in spi_init_queue()
1742 struct spi_message *spi_get_next_queued_message(struct spi_controller *ctlr) in spi_get_next_queued_message() argument
1748 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_get_next_queued_message()
1749 next = list_first_entry_or_null(&ctlr->queue, struct spi_message, in spi_get_next_queued_message()
1751 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_get_next_queued_message()
1764 void spi_finalize_current_message(struct spi_controller *ctlr) in spi_finalize_current_message() argument
1771 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_finalize_current_message()
1772 mesg = ctlr->cur_msg; in spi_finalize_current_message()
1773 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_finalize_current_message()
1775 if (!ctlr->ptp_sts_supported && !ctlr->transfer_one) { in spi_finalize_current_message()
1782 if (unlikely(ctlr->ptp_sts_supported)) in spi_finalize_current_message()
1786 spi_unmap_msg(ctlr, mesg); in spi_finalize_current_message()
1793 spi_res_release(ctlr, mesg); in spi_finalize_current_message()
1795 if (ctlr->cur_msg_prepared && ctlr->unprepare_message) { in spi_finalize_current_message()
1796 ret = ctlr->unprepare_message(ctlr, mesg); in spi_finalize_current_message()
1798 dev_err(&ctlr->dev, "failed to unprepare message: %d\n", in spi_finalize_current_message()
1803 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_finalize_current_message()
1804 ctlr->cur_msg = NULL; in spi_finalize_current_message()
1805 ctlr->cur_msg_prepared = false; in spi_finalize_current_message()
1806 ctlr->fallback = false; in spi_finalize_current_message()
1807 kthread_queue_work(ctlr->kworker, &ctlr->pump_messages); in spi_finalize_current_message()
1808 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_finalize_current_message()
1818 static int spi_start_queue(struct spi_controller *ctlr) in spi_start_queue() argument
1822 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_start_queue()
1824 if (ctlr->running || ctlr->busy) { in spi_start_queue()
1825 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_start_queue()
1829 ctlr->running = true; in spi_start_queue()
1830 ctlr->cur_msg = NULL; in spi_start_queue()
1831 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_start_queue()
1833 kthread_queue_work(ctlr->kworker, &ctlr->pump_messages); in spi_start_queue()
1838 static int spi_stop_queue(struct spi_controller *ctlr) in spi_stop_queue() argument
1844 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_stop_queue()
1852 while ((!list_empty(&ctlr->queue) || ctlr->busy) && limit--) { in spi_stop_queue()
1853 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_stop_queue()
1855 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_stop_queue()
1858 if (!list_empty(&ctlr->queue) || ctlr->busy) in spi_stop_queue()
1861 ctlr->running = false; in spi_stop_queue()
1863 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_stop_queue()
1866 dev_warn(&ctlr->dev, "could not stop message queue\n"); in spi_stop_queue()
1872 static int spi_destroy_queue(struct spi_controller *ctlr) in spi_destroy_queue() argument
1876 ret = spi_stop_queue(ctlr); in spi_destroy_queue()
1885 dev_err(&ctlr->dev, "problem destroying queue\n"); in spi_destroy_queue()
1889 kthread_destroy_worker(ctlr->kworker); in spi_destroy_queue()
1898 struct spi_controller *ctlr = spi->controller; in __spi_queued_transfer() local
1901 spin_lock_irqsave(&ctlr->queue_lock, flags); in __spi_queued_transfer()
1903 if (!ctlr->running) { in __spi_queued_transfer()
1904 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_queued_transfer()
1910 list_add_tail(&msg->queue, &ctlr->queue); in __spi_queued_transfer()
1911 if (!ctlr->busy && need_pump) in __spi_queued_transfer()
1912 kthread_queue_work(ctlr->kworker, &ctlr->pump_messages); in __spi_queued_transfer()
1914 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_queued_transfer()
1930 static int spi_controller_initialize_queue(struct spi_controller *ctlr) in spi_controller_initialize_queue() argument
1934 ctlr->transfer = spi_queued_transfer; in spi_controller_initialize_queue()
1935 if (!ctlr->transfer_one_message) in spi_controller_initialize_queue()
1936 ctlr->transfer_one_message = spi_transfer_one_message; in spi_controller_initialize_queue()
1939 ret = spi_init_queue(ctlr); in spi_controller_initialize_queue()
1941 dev_err(&ctlr->dev, "problem initializing queue\n"); in spi_controller_initialize_queue()
1944 ctlr->queued = true; in spi_controller_initialize_queue()
1945 ret = spi_start_queue(ctlr); in spi_controller_initialize_queue()
1947 dev_err(&ctlr->dev, "problem starting queue\n"); in spi_controller_initialize_queue()
1954 spi_destroy_queue(ctlr); in spi_controller_initialize_queue()
1969 void spi_flush_queue(struct spi_controller *ctlr) in spi_flush_queue() argument
1971 if (ctlr->transfer == spi_queued_transfer) in spi_flush_queue()
1972 __spi_pump_messages(ctlr, false); in spi_flush_queue()
1978 static int of_spi_parse_dt(struct spi_controller *ctlr, struct spi_device *spi, in of_spi_parse_dt() argument
2014 dev_warn(&ctlr->dev, in of_spi_parse_dt()
2038 dev_warn(&ctlr->dev, in of_spi_parse_dt()
2045 if (spi_controller_is_slave(ctlr)) { in of_spi_parse_dt()
2047 dev_err(&ctlr->dev, "%pOF is not called 'slave'\n", in of_spi_parse_dt()
2057 dev_err(&ctlr->dev, "%pOF has no valid 'reg' property (%d)\n", in of_spi_parse_dt()
2071 of_register_spi_device(struct spi_controller *ctlr, struct device_node *nc) in of_register_spi_device() argument
2077 spi = spi_alloc_device(ctlr); in of_register_spi_device()
2079 dev_err(&ctlr->dev, "spi_device alloc error for %pOF\n", nc); in of_register_spi_device()
2088 dev_err(&ctlr->dev, "cannot find modalias for %pOF\n", nc); in of_register_spi_device()
2092 rc = of_spi_parse_dt(ctlr, spi, nc); in of_register_spi_device()
2104 dev_err(&ctlr->dev, "spi_device register error %pOF\n", nc); in of_register_spi_device()
2124 static void of_register_spi_devices(struct spi_controller *ctlr) in of_register_spi_devices() argument
2129 if (!ctlr->dev.of_node) in of_register_spi_devices()
2132 for_each_available_child_of_node(ctlr->dev.of_node, nc) { in of_register_spi_devices()
2135 spi = of_register_spi_device(ctlr, nc); in of_register_spi_devices()
2137 dev_warn(&ctlr->dev, in of_register_spi_devices()
2144 static void of_register_spi_devices(struct spi_controller *ctlr) { } in of_register_spi_devices() argument
2198 struct spi_controller *ctlr; member
2238 struct spi_controller *ctlr = lookup->ctlr; in acpi_spi_add_resource() local
2253 ACPI_HANDLE(ctlr->dev.parent) != parent_handle) in acpi_spi_add_resource()
2263 if (ctlr->fw_translate_cs) { in acpi_spi_add_resource()
2264 int cs = ctlr->fw_translate_cs(ctlr, in acpi_spi_add_resource()
2294 static acpi_status acpi_register_spi_device(struct spi_controller *ctlr, in acpi_register_spi_device() argument
2307 lookup.ctlr = ctlr; in acpi_register_spi_device()
2321 ACPI_HANDLE(ctlr->dev.parent) == parent_handle) { in acpi_register_spi_device()
2329 spi = spi_alloc_device(ctlr); in acpi_register_spi_device()
2331 dev_err(&ctlr->dev, "failed to allocate SPI device for %s\n", in acpi_register_spi_device()
2355 dev_err(&ctlr->dev, "failed to add SPI device %s from ACPI\n", in acpi_register_spi_device()
2366 struct spi_controller *ctlr = data; in acpi_spi_add_device() local
2372 return acpi_register_spi_device(ctlr, adev); in acpi_spi_add_device()
2377 static void acpi_register_spi_devices(struct spi_controller *ctlr) in acpi_register_spi_devices() argument
2382 handle = ACPI_HANDLE(ctlr->dev.parent); in acpi_register_spi_devices()
2388 acpi_spi_add_device, NULL, ctlr, NULL); in acpi_register_spi_devices()
2390 dev_warn(&ctlr->dev, "failed to enumerate SPI slaves\n"); in acpi_register_spi_devices()
2393 static inline void acpi_register_spi_devices(struct spi_controller *ctlr) {} in acpi_register_spi_devices() argument
2398 struct spi_controller *ctlr; in spi_controller_release() local
2400 ctlr = container_of(dev, struct spi_controller, dev); in spi_controller_release()
2401 kfree(ctlr); in spi_controller_release()
2419 struct spi_controller *ctlr = spi->controller; in spi_slave_abort() local
2421 if (spi_controller_is_slave(ctlr) && ctlr->slave_abort) in spi_slave_abort()
2422 return ctlr->slave_abort(ctlr); in spi_slave_abort()
2436 struct spi_controller *ctlr = container_of(dev, struct spi_controller, in slave_show() local
2440 child = device_find_child(&ctlr->dev, NULL, match_true); in slave_show()
2448 struct spi_controller *ctlr = container_of(dev, struct spi_controller, in slave_store() local
2459 child = device_find_child(&ctlr->dev, NULL, match_true); in slave_store()
2468 spi = spi_alloc_device(ctlr); in slave_store()
2539 struct spi_controller *ctlr; in __spi_alloc_controller() local
2540 size_t ctlr_size = ALIGN(sizeof(*ctlr), dma_get_cache_alignment()); in __spi_alloc_controller()
2545 ctlr = kzalloc(size + ctlr_size, GFP_KERNEL); in __spi_alloc_controller()
2546 if (!ctlr) in __spi_alloc_controller()
2549 device_initialize(&ctlr->dev); in __spi_alloc_controller()
2550 INIT_LIST_HEAD(&ctlr->queue); in __spi_alloc_controller()
2551 spin_lock_init(&ctlr->queue_lock); in __spi_alloc_controller()
2552 spin_lock_init(&ctlr->bus_lock_spinlock); in __spi_alloc_controller()
2553 mutex_init(&ctlr->bus_lock_mutex); in __spi_alloc_controller()
2554 mutex_init(&ctlr->io_mutex); in __spi_alloc_controller()
2555 mutex_init(&ctlr->add_lock); in __spi_alloc_controller()
2556 ctlr->bus_num = -1; in __spi_alloc_controller()
2557 ctlr->num_chipselect = 1; in __spi_alloc_controller()
2558 ctlr->slave = slave; in __spi_alloc_controller()
2560 ctlr->dev.class = &spi_slave_class; in __spi_alloc_controller()
2562 ctlr->dev.class = &spi_master_class; in __spi_alloc_controller()
2563 ctlr->dev.parent = dev; in __spi_alloc_controller()
2564 pm_suspend_ignore_children(&ctlr->dev, true); in __spi_alloc_controller()
2565 spi_controller_set_devdata(ctlr, (void *)ctlr + ctlr_size); in __spi_alloc_controller()
2567 return ctlr; in __spi_alloc_controller()
2571 static void devm_spi_release_controller(struct device *dev, void *ctlr) in devm_spi_release_controller() argument
2573 spi_controller_put(*(struct spi_controller **)ctlr); in devm_spi_release_controller()
2595 struct spi_controller **ptr, *ctlr; in __devm_spi_alloc_controller() local
2602 ctlr = __spi_alloc_controller(dev, size, slave); in __devm_spi_alloc_controller()
2603 if (ctlr) { in __devm_spi_alloc_controller()
2604 ctlr->devm_allocated = true; in __devm_spi_alloc_controller()
2605 *ptr = ctlr; in __devm_spi_alloc_controller()
2611 return ctlr; in __devm_spi_alloc_controller()
2616 static int of_spi_get_gpio_numbers(struct spi_controller *ctlr) in of_spi_get_gpio_numbers() argument
2619 struct device_node *np = ctlr->dev.of_node; in of_spi_get_gpio_numbers()
2625 ctlr->num_chipselect = max_t(int, nb, ctlr->num_chipselect); in of_spi_get_gpio_numbers()
2633 cs = devm_kcalloc(&ctlr->dev, ctlr->num_chipselect, sizeof(int), in of_spi_get_gpio_numbers()
2635 ctlr->cs_gpios = cs; in of_spi_get_gpio_numbers()
2637 if (!ctlr->cs_gpios) in of_spi_get_gpio_numbers()
2640 for (i = 0; i < ctlr->num_chipselect; i++) in of_spi_get_gpio_numbers()
2649 static int of_spi_get_gpio_numbers(struct spi_controller *ctlr) in of_spi_get_gpio_numbers() argument
2659 static int spi_get_gpio_descs(struct spi_controller *ctlr) in spi_get_gpio_descs() argument
2663 struct device *dev = &ctlr->dev; in spi_get_gpio_descs()
2675 ctlr->num_chipselect = max_t(int, nb, ctlr->num_chipselect); in spi_get_gpio_descs()
2677 cs = devm_kcalloc(dev, ctlr->num_chipselect, sizeof(*cs), in spi_get_gpio_descs()
2681 ctlr->cs_gpiods = cs; in spi_get_gpio_descs()
2712 if (ctlr->max_native_cs && i >= ctlr->max_native_cs) { in spi_get_gpio_descs()
2719 ctlr->unused_native_cs = ffs(~native_cs_mask) - 1; in spi_get_gpio_descs()
2721 if ((ctlr->flags & SPI_MASTER_GPIO_SS) && num_cs_gpios && in spi_get_gpio_descs()
2722 ctlr->max_native_cs && ctlr->unused_native_cs >= ctlr->max_native_cs) { in spi_get_gpio_descs()
2730 static int spi_controller_check_ops(struct spi_controller *ctlr) in spi_controller_check_ops() argument
2739 if (ctlr->mem_ops) { in spi_controller_check_ops()
2740 if (!ctlr->mem_ops->exec_op) in spi_controller_check_ops()
2742 } else if (!ctlr->transfer && !ctlr->transfer_one && in spi_controller_check_ops()
2743 !ctlr->transfer_one_message) { in spi_controller_check_ops()
2773 int spi_register_controller(struct spi_controller *ctlr) in spi_register_controller() argument
2775 struct device *dev = ctlr->dev.parent; in spi_register_controller()
2787 status = spi_controller_check_ops(ctlr); in spi_register_controller()
2791 if (ctlr->bus_num >= 0) { in spi_register_controller()
2794 id = idr_alloc(&spi_master_idr, ctlr, ctlr->bus_num, in spi_register_controller()
2795 ctlr->bus_num + 1, GFP_KERNEL); in spi_register_controller()
2799 ctlr->bus_num = id; in spi_register_controller()
2800 } else if (ctlr->dev.of_node) { in spi_register_controller()
2802 id = of_alias_get_id(ctlr->dev.of_node, "spi"); in spi_register_controller()
2804 ctlr->bus_num = id; in spi_register_controller()
2806 id = idr_alloc(&spi_master_idr, ctlr, ctlr->bus_num, in spi_register_controller()
2807 ctlr->bus_num + 1, GFP_KERNEL); in spi_register_controller()
2813 if (ctlr->bus_num < 0) { in spi_register_controller()
2821 id = idr_alloc(&spi_master_idr, ctlr, first_dynamic, in spi_register_controller()
2826 ctlr->bus_num = id; in spi_register_controller()
2828 ctlr->bus_lock_flag = 0; in spi_register_controller()
2829 init_completion(&ctlr->xfer_completion); in spi_register_controller()
2830 if (!ctlr->max_dma_len) in spi_register_controller()
2831 ctlr->max_dma_len = INT_MAX; in spi_register_controller()
2836 dev_set_name(&ctlr->dev, "spi%u", ctlr->bus_num); in spi_register_controller()
2838 if (!spi_controller_is_slave(ctlr)) { in spi_register_controller()
2839 if (ctlr->use_gpio_descriptors) { in spi_register_controller()
2840 status = spi_get_gpio_descs(ctlr); in spi_register_controller()
2847 ctlr->mode_bits |= SPI_CS_HIGH; in spi_register_controller()
2850 status = of_spi_get_gpio_numbers(ctlr); in spi_register_controller()
2860 if (!ctlr->num_chipselect) { in spi_register_controller()
2865 status = device_add(&ctlr->dev); in spi_register_controller()
2869 spi_controller_is_slave(ctlr) ? "slave" : "master", in spi_register_controller()
2870 dev_name(&ctlr->dev)); in spi_register_controller()
2877 if (ctlr->transfer) { in spi_register_controller()
2879 } else if (ctlr->transfer_one || ctlr->transfer_one_message) { in spi_register_controller()
2880 status = spi_controller_initialize_queue(ctlr); in spi_register_controller()
2882 device_del(&ctlr->dev); in spi_register_controller()
2887 spin_lock_init(&ctlr->statistics.lock); in spi_register_controller()
2890 list_add_tail(&ctlr->list, &spi_controller_list); in spi_register_controller()
2892 spi_match_controller_to_boardinfo(ctlr, &bi->board_info); in spi_register_controller()
2896 of_register_spi_devices(ctlr); in spi_register_controller()
2897 acpi_register_spi_devices(ctlr); in spi_register_controller()
2902 idr_remove(&spi_master_idr, ctlr->bus_num); in spi_register_controller()
2908 static void devm_spi_unregister(void *ctlr) in devm_spi_unregister() argument
2910 spi_unregister_controller(ctlr); in devm_spi_unregister()
2927 struct spi_controller *ctlr) in devm_spi_register_controller() argument
2931 ret = spi_register_controller(ctlr); in devm_spi_register_controller()
2935 return devm_add_action_or_reset(dev, devm_spi_unregister, ctlr); in devm_spi_register_controller()
2957 void spi_unregister_controller(struct spi_controller *ctlr) in spi_unregister_controller() argument
2960 int id = ctlr->bus_num; in spi_unregister_controller()
2964 mutex_lock(&ctlr->add_lock); in spi_unregister_controller()
2966 device_for_each_child(&ctlr->dev, NULL, __unregister); in spi_unregister_controller()
2972 if (ctlr->queued) { in spi_unregister_controller()
2973 if (spi_destroy_queue(ctlr)) in spi_unregister_controller()
2974 dev_err(&ctlr->dev, "queue remove failed\n"); in spi_unregister_controller()
2977 list_del(&ctlr->list); in spi_unregister_controller()
2980 device_del(&ctlr->dev); in spi_unregister_controller()
2985 if (!ctlr->devm_allocated) in spi_unregister_controller()
2986 put_device(&ctlr->dev); in spi_unregister_controller()
2990 if (found == ctlr) in spi_unregister_controller()
2995 mutex_unlock(&ctlr->add_lock); in spi_unregister_controller()
2999 int spi_controller_suspend(struct spi_controller *ctlr) in spi_controller_suspend() argument
3004 if (!ctlr->queued) in spi_controller_suspend()
3007 ret = spi_stop_queue(ctlr); in spi_controller_suspend()
3009 dev_err(&ctlr->dev, "queue stop failed\n"); in spi_controller_suspend()
3015 int spi_controller_resume(struct spi_controller *ctlr) in spi_controller_resume() argument
3019 if (!ctlr->queued) in spi_controller_resume()
3022 ret = spi_start_queue(ctlr); in spi_controller_resume()
3024 dev_err(&ctlr->dev, "queue restart failed\n"); in spi_controller_resume()
3032 struct spi_controller *ctlr; in __spi_controller_match() local
3035 ctlr = container_of(dev, struct spi_controller, dev); in __spi_controller_match()
3036 return ctlr->bus_num == *bus_num; in __spi_controller_match()
3054 struct spi_controller *ctlr = NULL; in spi_busnum_to_master() local
3059 ctlr = container_of(dev, struct spi_controller, dev); in spi_busnum_to_master()
3061 return ctlr; in spi_busnum_to_master()
3136 void spi_res_release(struct spi_controller *ctlr, struct spi_message *message) in spi_res_release() argument
3142 res->release(ctlr, message, res->data); in spi_res_release()
3155 static void __spi_replace_transfers_release(struct spi_controller *ctlr, in __spi_replace_transfers_release() argument
3164 rxfer->release(ctlr, msg, res); in __spi_replace_transfers_release()
3283 static int __spi_split_transfer_maxsize(struct spi_controller *ctlr, in __spi_split_transfer_maxsize() argument
3340 SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics, in __spi_split_transfer_maxsize()
3359 int spi_split_transfers_maxsize(struct spi_controller *ctlr, in spi_split_transfers_maxsize() argument
3375 ret = __spi_split_transfer_maxsize(ctlr, msg, &xfer, in spi_split_transfers_maxsize()
3392 static int __spi_validate_bits_per_word(struct spi_controller *ctlr, in __spi_validate_bits_per_word() argument
3395 if (ctlr->bits_per_word_mask) { in __spi_validate_bits_per_word()
3399 if (!(ctlr->bits_per_word_mask & SPI_BPW_MASK(bits_per_word))) in __spi_validate_bits_per_word()
3571 struct spi_controller *ctlr = spi->controller; in __spi_validate() local
3584 if ((spi->mode & SPI_CS_WORD) && (!(ctlr->mode_bits & SPI_CS_WORD) || in __spi_validate()
3595 ret = spi_split_transfers_maxsize(ctlr, message, maxsize, in __spi_validate()
3613 if ((ctlr->flags & SPI_CONTROLLER_HALF_DUPLEX) || in __spi_validate()
3615 unsigned flags = ctlr->flags; in __spi_validate()
3645 if (ctlr->max_speed_hz && xfer->speed_hz > ctlr->max_speed_hz) in __spi_validate()
3646 xfer->speed_hz = ctlr->max_speed_hz; in __spi_validate()
3648 if (__spi_validate_bits_per_word(ctlr, xfer->bits_per_word)) in __spi_validate()
3666 if (xfer->speed_hz && ctlr->min_speed_hz && in __spi_validate()
3667 xfer->speed_hz < ctlr->min_speed_hz) in __spi_validate()
3719 struct spi_controller *ctlr = spi->controller; in __spi_async() local
3726 if (!ctlr->transfer) in __spi_async()
3731 SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics, spi_async); in __spi_async()
3736 if (!ctlr->ptp_sts_supported) { in __spi_async()
3743 return ctlr->transfer(spi, message); in __spi_async()
3779 struct spi_controller *ctlr = spi->controller; in spi_async() local
3787 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in spi_async()
3789 if (ctlr->bus_lock_flag) in spi_async()
3794 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in spi_async()
3833 struct spi_controller *ctlr = spi->controller; in spi_async_locked() local
3841 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in spi_async_locked()
3845 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in spi_async_locked()
3868 struct spi_controller *ctlr = spi->controller; in __spi_sync() local
3879 SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics, spi_sync); in __spi_sync()
3887 if (ctlr->transfer == spi_queued_transfer) { in __spi_sync()
3888 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in __spi_sync()
3894 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in __spi_sync()
3903 if (ctlr->transfer == spi_queued_transfer) { in __spi_sync()
3904 SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics, in __spi_sync()
3908 __spi_pump_messages(ctlr, false); in __spi_sync()
3988 int spi_bus_lock(struct spi_controller *ctlr) in spi_bus_lock() argument
3992 mutex_lock(&ctlr->bus_lock_mutex); in spi_bus_lock()
3994 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in spi_bus_lock()
3995 ctlr->bus_lock_flag = 1; in spi_bus_lock()
3996 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in spi_bus_lock()
4017 int spi_bus_unlock(struct spi_controller *ctlr) in spi_bus_unlock() argument
4019 ctlr->bus_lock_flag = 0; in spi_bus_unlock()
4021 mutex_unlock(&ctlr->bus_lock_mutex); in spi_bus_unlock()
4139 struct spi_controller *ctlr; in of_spi_notify() local
4144 ctlr = of_find_spi_controller_by_node(rd->dn->parent); in of_spi_notify()
4145 if (ctlr == NULL) in of_spi_notify()
4149 put_device(&ctlr->dev); in of_spi_notify()
4153 spi = of_register_spi_device(ctlr, rd->dn); in of_spi_notify()
4154 put_device(&ctlr->dev); in of_spi_notify()
4225 struct spi_controller *ctlr; in acpi_spi_notify() local
4230 ctlr = acpi_spi_find_controller_by_adev(adev->parent); in acpi_spi_notify()
4231 if (!ctlr) in acpi_spi_notify()
4234 acpi_register_spi_device(ctlr, adev); in acpi_spi_notify()
4235 put_device(&ctlr->dev); in acpi_spi_notify()