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()
538 static struct spi_device *spi_alloc_device(struct spi_controller *ctlr) in spi_alloc_device() argument
542 if (!spi_controller_get(ctlr)) in spi_alloc_device()
547 spi_controller_put(ctlr); in spi_alloc_device()
551 spi->master = spi->controller = ctlr; in spi_alloc_device()
552 spi->dev.parent = &ctlr->dev; in spi_alloc_device()
556 spi->mode = ctlr->buswidth_override_bits; in spi_alloc_device()
596 struct spi_controller *ctlr = spi->controller; in __spi_add_device() local
597 struct device *dev = ctlr->dev.parent; in __spi_add_device()
614 !device_is_registered(&ctlr->dev)) { in __spi_add_device()
619 if (ctlr->cs_gpiods) in __spi_add_device()
620 spi->cs_gpiod = ctlr->cs_gpiods[spi->chip_select]; in __spi_add_device()
621 else if (ctlr->cs_gpios) in __spi_add_device()
622 spi->cs_gpio = ctlr->cs_gpios[spi->chip_select]; in __spi_add_device()
659 struct spi_controller *ctlr = spi->controller; in spi_add_device() local
660 struct device *dev = ctlr->dev.parent; in spi_add_device()
664 if (spi->chip_select >= ctlr->num_chipselect) { in spi_add_device()
666 ctlr->num_chipselect); in spi_add_device()
673 mutex_lock(&ctlr->add_lock); in spi_add_device()
675 mutex_unlock(&ctlr->add_lock); in spi_add_device()
681 struct spi_controller *ctlr = spi->controller; in spi_add_device_locked() local
682 struct device *dev = ctlr->dev.parent; in spi_add_device_locked()
685 if (spi->chip_select >= ctlr->num_chipselect) { in spi_add_device_locked()
687 ctlr->num_chipselect); in spi_add_device_locked()
694 WARN_ON(!mutex_is_locked(&ctlr->add_lock)); in spi_add_device_locked()
712 struct spi_device *spi_new_device(struct spi_controller *ctlr, in spi_new_device() argument
725 proxy = spi_alloc_device(ctlr); in spi_new_device()
743 dev_err(&ctlr->dev, "failed to add software node to '%s': %d\n", in spi_new_device()
787 static void spi_match_controller_to_boardinfo(struct spi_controller *ctlr, in spi_match_controller_to_boardinfo() argument
792 if (ctlr->bus_num != bi->bus_num) in spi_match_controller_to_boardinfo()
795 dev = spi_new_device(ctlr, bi); in spi_match_controller_to_boardinfo()
797 dev_err(ctlr->dev.parent, "can't create new device for %s\n", in spi_match_controller_to_boardinfo()
835 struct spi_controller *ctlr; in spi_register_board_info() local
841 list_for_each_entry(ctlr, &spi_controller_list, list) in spi_register_board_info()
842 spi_match_controller_to_boardinfo(ctlr, in spi_register_board_info()
917 static void spi_res_release(struct spi_controller *ctlr, struct spi_message *message) in spi_res_release() argument
923 res->release(ctlr, message, res->data); in spi_res_release()
1003 int spi_map_buf(struct spi_controller *ctlr, struct device *dev, in spi_map_buf() argument
1028 desc_len = min_t(int, max_seg_size, ctlr->max_dma_len); in spi_map_buf()
1084 void spi_unmap_buf(struct spi_controller *ctlr, struct device *dev, in spi_unmap_buf() argument
1093 static int __spi_map_msg(struct spi_controller *ctlr, struct spi_message *msg) in __spi_map_msg() argument
1099 if (!ctlr->can_dma) in __spi_map_msg()
1102 if (ctlr->dma_tx) in __spi_map_msg()
1103 tx_dev = ctlr->dma_tx->device->dev; in __spi_map_msg()
1104 else if (ctlr->dma_map_dev) in __spi_map_msg()
1105 tx_dev = ctlr->dma_map_dev; in __spi_map_msg()
1107 tx_dev = ctlr->dev.parent; in __spi_map_msg()
1109 if (ctlr->dma_rx) in __spi_map_msg()
1110 rx_dev = ctlr->dma_rx->device->dev; in __spi_map_msg()
1111 else if (ctlr->dma_map_dev) in __spi_map_msg()
1112 rx_dev = ctlr->dma_map_dev; in __spi_map_msg()
1114 rx_dev = ctlr->dev.parent; in __spi_map_msg()
1117 if (!ctlr->can_dma(ctlr, msg->spi, xfer)) in __spi_map_msg()
1121 ret = spi_map_buf(ctlr, tx_dev, &xfer->tx_sg, in __spi_map_msg()
1129 ret = spi_map_buf(ctlr, rx_dev, &xfer->rx_sg, in __spi_map_msg()
1133 spi_unmap_buf(ctlr, tx_dev, &xfer->tx_sg, in __spi_map_msg()
1140 ctlr->cur_msg_mapped = true; in __spi_map_msg()
1145 static int __spi_unmap_msg(struct spi_controller *ctlr, struct spi_message *msg) in __spi_unmap_msg() argument
1150 if (!ctlr->cur_msg_mapped || !ctlr->can_dma) in __spi_unmap_msg()
1153 if (ctlr->dma_tx) in __spi_unmap_msg()
1154 tx_dev = ctlr->dma_tx->device->dev; in __spi_unmap_msg()
1156 tx_dev = ctlr->dev.parent; in __spi_unmap_msg()
1158 if (ctlr->dma_rx) in __spi_unmap_msg()
1159 rx_dev = ctlr->dma_rx->device->dev; in __spi_unmap_msg()
1161 rx_dev = ctlr->dev.parent; in __spi_unmap_msg()
1164 if (!ctlr->can_dma(ctlr, msg->spi, xfer)) in __spi_unmap_msg()
1167 spi_unmap_buf(ctlr, rx_dev, &xfer->rx_sg, DMA_FROM_DEVICE); in __spi_unmap_msg()
1168 spi_unmap_buf(ctlr, tx_dev, &xfer->tx_sg, DMA_TO_DEVICE); in __spi_unmap_msg()
1171 ctlr->cur_msg_mapped = false; in __spi_unmap_msg()
1176 static inline int __spi_map_msg(struct spi_controller *ctlr, in __spi_map_msg() argument
1182 static inline int __spi_unmap_msg(struct spi_controller *ctlr, in __spi_unmap_msg() argument
1189 static inline int spi_unmap_msg(struct spi_controller *ctlr, in spi_unmap_msg() argument
1199 if (xfer->tx_buf == ctlr->dummy_tx) in spi_unmap_msg()
1201 if (xfer->rx_buf == ctlr->dummy_rx) in spi_unmap_msg()
1205 return __spi_unmap_msg(ctlr, msg); in spi_unmap_msg()
1208 static int spi_map_msg(struct spi_controller *ctlr, struct spi_message *msg) in spi_map_msg() argument
1214 if ((ctlr->flags & (SPI_CONTROLLER_MUST_RX | SPI_CONTROLLER_MUST_TX)) in spi_map_msg()
1220 if ((ctlr->flags & SPI_CONTROLLER_MUST_TX) && in spi_map_msg()
1223 if ((ctlr->flags & SPI_CONTROLLER_MUST_RX) && in spi_map_msg()
1229 tmp = krealloc(ctlr->dummy_tx, max_tx, in spi_map_msg()
1233 ctlr->dummy_tx = tmp; in spi_map_msg()
1238 tmp = krealloc(ctlr->dummy_rx, max_rx, in spi_map_msg()
1242 ctlr->dummy_rx = tmp; in spi_map_msg()
1251 xfer->tx_buf = ctlr->dummy_tx; in spi_map_msg()
1253 xfer->rx_buf = ctlr->dummy_rx; in spi_map_msg()
1258 return __spi_map_msg(ctlr, msg); in spi_map_msg()
1261 static int spi_transfer_wait(struct spi_controller *ctlr, in spi_transfer_wait() argument
1265 struct spi_statistics *statm = &ctlr->statistics; in spi_transfer_wait()
1270 if (spi_controller_is_slave(ctlr)) { in spi_transfer_wait()
1271 if (wait_for_completion_interruptible(&ctlr->xfer_completion)) { in spi_transfer_wait()
1296 ms = wait_for_completion_timeout(&ctlr->xfer_completion, in spi_transfer_wait()
1416 static int spi_transfer_one_message(struct spi_controller *ctlr, in spi_transfer_one_message() argument
1422 struct spi_statistics *statm = &ctlr->statistics; in spi_transfer_one_message()
1433 spi_statistics_add_transfer_stats(statm, xfer, ctlr); in spi_transfer_one_message()
1434 spi_statistics_add_transfer_stats(stats, xfer, ctlr); in spi_transfer_one_message()
1436 if (!ctlr->ptp_sts_supported) { in spi_transfer_one_message()
1442 reinit_completion(&ctlr->xfer_completion); in spi_transfer_one_message()
1445 ret = ctlr->transfer_one(ctlr, msg->spi, xfer); in spi_transfer_one_message()
1447 if (ctlr->cur_msg_mapped && in spi_transfer_one_message()
1449 __spi_unmap_msg(ctlr, msg); in spi_transfer_one_message()
1450 ctlr->fallback = true; in spi_transfer_one_message()
1465 ret = spi_transfer_wait(ctlr, msg, xfer); in spi_transfer_one_message()
1476 if (!ctlr->ptp_sts_supported) { in spi_transfer_one_message()
1509 if (msg->status && ctlr->handle_err) in spi_transfer_one_message()
1510 ctlr->handle_err(ctlr, msg); in spi_transfer_one_message()
1512 spi_finalize_current_message(ctlr); in spi_transfer_one_message()
1525 void spi_finalize_current_transfer(struct spi_controller *ctlr) in spi_finalize_current_transfer() argument
1527 complete(&ctlr->xfer_completion); in spi_finalize_current_transfer()
1531 static void spi_idle_runtime_pm(struct spi_controller *ctlr) in spi_idle_runtime_pm() argument
1533 if (ctlr->auto_runtime_pm) { in spi_idle_runtime_pm()
1534 pm_runtime_mark_last_busy(ctlr->dev.parent); in spi_idle_runtime_pm()
1535 pm_runtime_put_autosuspend(ctlr->dev.parent); in spi_idle_runtime_pm()
1552 static void __spi_pump_messages(struct spi_controller *ctlr, bool in_kthread) in __spi_pump_messages() argument
1561 spin_lock_irqsave(&ctlr->queue_lock, flags); in __spi_pump_messages()
1564 if (ctlr->cur_msg) { in __spi_pump_messages()
1565 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1570 if (ctlr->idling) { in __spi_pump_messages()
1571 kthread_queue_work(ctlr->kworker, &ctlr->pump_messages); in __spi_pump_messages()
1572 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1577 if (list_empty(&ctlr->queue) || !ctlr->running) { in __spi_pump_messages()
1578 if (!ctlr->busy) { in __spi_pump_messages()
1579 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1585 if (!ctlr->dummy_rx && !ctlr->dummy_tx && in __spi_pump_messages()
1586 !ctlr->unprepare_transfer_hardware) { in __spi_pump_messages()
1587 spi_idle_runtime_pm(ctlr); in __spi_pump_messages()
1588 ctlr->busy = false; in __spi_pump_messages()
1589 trace_spi_controller_idle(ctlr); in __spi_pump_messages()
1591 kthread_queue_work(ctlr->kworker, in __spi_pump_messages()
1592 &ctlr->pump_messages); in __spi_pump_messages()
1594 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1598 ctlr->busy = false; in __spi_pump_messages()
1599 ctlr->idling = true; in __spi_pump_messages()
1600 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1602 kfree(ctlr->dummy_rx); in __spi_pump_messages()
1603 ctlr->dummy_rx = NULL; in __spi_pump_messages()
1604 kfree(ctlr->dummy_tx); in __spi_pump_messages()
1605 ctlr->dummy_tx = NULL; in __spi_pump_messages()
1606 if (ctlr->unprepare_transfer_hardware && in __spi_pump_messages()
1607 ctlr->unprepare_transfer_hardware(ctlr)) in __spi_pump_messages()
1608 dev_err(&ctlr->dev, in __spi_pump_messages()
1610 spi_idle_runtime_pm(ctlr); in __spi_pump_messages()
1611 trace_spi_controller_idle(ctlr); in __spi_pump_messages()
1613 spin_lock_irqsave(&ctlr->queue_lock, flags); in __spi_pump_messages()
1614 ctlr->idling = false; in __spi_pump_messages()
1615 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1620 msg = list_first_entry(&ctlr->queue, struct spi_message, queue); in __spi_pump_messages()
1621 ctlr->cur_msg = msg; in __spi_pump_messages()
1624 if (ctlr->busy) in __spi_pump_messages()
1627 ctlr->busy = true; in __spi_pump_messages()
1628 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1630 mutex_lock(&ctlr->io_mutex); in __spi_pump_messages()
1632 if (!was_busy && ctlr->auto_runtime_pm) { in __spi_pump_messages()
1633 ret = pm_runtime_get_sync(ctlr->dev.parent); in __spi_pump_messages()
1635 pm_runtime_put_noidle(ctlr->dev.parent); in __spi_pump_messages()
1636 dev_err(&ctlr->dev, "Failed to power device: %d\n", in __spi_pump_messages()
1638 mutex_unlock(&ctlr->io_mutex); in __spi_pump_messages()
1644 trace_spi_controller_busy(ctlr); in __spi_pump_messages()
1646 if (!was_busy && ctlr->prepare_transfer_hardware) { in __spi_pump_messages()
1647 ret = ctlr->prepare_transfer_hardware(ctlr); in __spi_pump_messages()
1649 dev_err(&ctlr->dev, in __spi_pump_messages()
1653 if (ctlr->auto_runtime_pm) in __spi_pump_messages()
1654 pm_runtime_put(ctlr->dev.parent); in __spi_pump_messages()
1657 spi_finalize_current_message(ctlr); in __spi_pump_messages()
1659 mutex_unlock(&ctlr->io_mutex); in __spi_pump_messages()
1666 if (ctlr->prepare_message) { in __spi_pump_messages()
1667 ret = ctlr->prepare_message(ctlr, msg); in __spi_pump_messages()
1669 dev_err(&ctlr->dev, "failed to prepare message: %d\n", in __spi_pump_messages()
1672 spi_finalize_current_message(ctlr); in __spi_pump_messages()
1675 ctlr->cur_msg_prepared = true; in __spi_pump_messages()
1678 ret = spi_map_msg(ctlr, msg); in __spi_pump_messages()
1681 spi_finalize_current_message(ctlr); in __spi_pump_messages()
1685 if (!ctlr->ptp_sts_supported && !ctlr->transfer_one) { in __spi_pump_messages()
1692 ret = ctlr->transfer_one_message(ctlr, msg); in __spi_pump_messages()
1694 dev_err(&ctlr->dev, in __spi_pump_messages()
1700 mutex_unlock(&ctlr->io_mutex); in __spi_pump_messages()
1713 struct spi_controller *ctlr = in spi_pump_messages() local
1716 __spi_pump_messages(ctlr, true); in spi_pump_messages()
1740 void spi_take_timestamp_pre(struct spi_controller *ctlr, in spi_take_timestamp_pre() argument
1757 local_irq_save(ctlr->irq_flags); in spi_take_timestamp_pre()
1777 void spi_take_timestamp_post(struct spi_controller *ctlr, in spi_take_timestamp_post() argument
1793 local_irq_restore(ctlr->irq_flags); in spi_take_timestamp_post()
1819 static void spi_set_thread_rt(struct spi_controller *ctlr) in spi_set_thread_rt() argument
1821 dev_info(&ctlr->dev, in spi_set_thread_rt()
1823 sched_set_fifo(ctlr->kworker->task); in spi_set_thread_rt()
1826 static int spi_init_queue(struct spi_controller *ctlr) in spi_init_queue() argument
1828 ctlr->running = false; in spi_init_queue()
1829 ctlr->busy = false; in spi_init_queue()
1831 ctlr->kworker = kthread_create_worker(0, dev_name(&ctlr->dev)); in spi_init_queue()
1832 if (IS_ERR(ctlr->kworker)) { in spi_init_queue()
1833 dev_err(&ctlr->dev, "failed to create message pump kworker\n"); in spi_init_queue()
1834 return PTR_ERR(ctlr->kworker); in spi_init_queue()
1837 kthread_init_work(&ctlr->pump_messages, spi_pump_messages); in spi_init_queue()
1846 if (ctlr->rt) in spi_init_queue()
1847 spi_set_thread_rt(ctlr); in spi_init_queue()
1862 struct spi_message *spi_get_next_queued_message(struct spi_controller *ctlr) in spi_get_next_queued_message() argument
1868 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_get_next_queued_message()
1869 next = list_first_entry_or_null(&ctlr->queue, struct spi_message, in spi_get_next_queued_message()
1871 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_get_next_queued_message()
1884 void spi_finalize_current_message(struct spi_controller *ctlr) in spi_finalize_current_message() argument
1891 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_finalize_current_message()
1892 mesg = ctlr->cur_msg; in spi_finalize_current_message()
1893 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_finalize_current_message()
1895 if (!ctlr->ptp_sts_supported && !ctlr->transfer_one) { in spi_finalize_current_message()
1902 if (unlikely(ctlr->ptp_sts_supported)) in spi_finalize_current_message()
1906 spi_unmap_msg(ctlr, mesg); in spi_finalize_current_message()
1913 spi_res_release(ctlr, mesg); in spi_finalize_current_message()
1915 if (ctlr->cur_msg_prepared && ctlr->unprepare_message) { in spi_finalize_current_message()
1916 ret = ctlr->unprepare_message(ctlr, mesg); in spi_finalize_current_message()
1918 dev_err(&ctlr->dev, "failed to unprepare message: %d\n", in spi_finalize_current_message()
1923 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_finalize_current_message()
1924 ctlr->cur_msg = NULL; in spi_finalize_current_message()
1925 ctlr->cur_msg_prepared = false; in spi_finalize_current_message()
1926 ctlr->fallback = false; in spi_finalize_current_message()
1927 kthread_queue_work(ctlr->kworker, &ctlr->pump_messages); in spi_finalize_current_message()
1928 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_finalize_current_message()
1938 static int spi_start_queue(struct spi_controller *ctlr) in spi_start_queue() argument
1942 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_start_queue()
1944 if (ctlr->running || ctlr->busy) { in spi_start_queue()
1945 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_start_queue()
1949 ctlr->running = true; in spi_start_queue()
1950 ctlr->cur_msg = NULL; in spi_start_queue()
1951 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_start_queue()
1953 kthread_queue_work(ctlr->kworker, &ctlr->pump_messages); in spi_start_queue()
1958 static int spi_stop_queue(struct spi_controller *ctlr) in spi_stop_queue() argument
1964 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_stop_queue()
1972 while ((!list_empty(&ctlr->queue) || ctlr->busy) && limit--) { in spi_stop_queue()
1973 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_stop_queue()
1975 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_stop_queue()
1978 if (!list_empty(&ctlr->queue) || ctlr->busy) in spi_stop_queue()
1981 ctlr->running = false; in spi_stop_queue()
1983 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_stop_queue()
1986 dev_warn(&ctlr->dev, "could not stop message queue\n"); in spi_stop_queue()
1992 static int spi_destroy_queue(struct spi_controller *ctlr) in spi_destroy_queue() argument
1996 ret = spi_stop_queue(ctlr); in spi_destroy_queue()
2005 dev_err(&ctlr->dev, "problem destroying queue\n"); in spi_destroy_queue()
2009 kthread_destroy_worker(ctlr->kworker); in spi_destroy_queue()
2018 struct spi_controller *ctlr = spi->controller; in __spi_queued_transfer() local
2021 spin_lock_irqsave(&ctlr->queue_lock, flags); in __spi_queued_transfer()
2023 if (!ctlr->running) { in __spi_queued_transfer()
2024 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_queued_transfer()
2030 list_add_tail(&msg->queue, &ctlr->queue); in __spi_queued_transfer()
2031 if (!ctlr->busy && need_pump) in __spi_queued_transfer()
2032 kthread_queue_work(ctlr->kworker, &ctlr->pump_messages); in __spi_queued_transfer()
2034 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_queued_transfer()
2050 static int spi_controller_initialize_queue(struct spi_controller *ctlr) in spi_controller_initialize_queue() argument
2054 ctlr->transfer = spi_queued_transfer; in spi_controller_initialize_queue()
2055 if (!ctlr->transfer_one_message) in spi_controller_initialize_queue()
2056 ctlr->transfer_one_message = spi_transfer_one_message; in spi_controller_initialize_queue()
2059 ret = spi_init_queue(ctlr); in spi_controller_initialize_queue()
2061 dev_err(&ctlr->dev, "problem initializing queue\n"); in spi_controller_initialize_queue()
2064 ctlr->queued = true; in spi_controller_initialize_queue()
2065 ret = spi_start_queue(ctlr); in spi_controller_initialize_queue()
2067 dev_err(&ctlr->dev, "problem starting queue\n"); in spi_controller_initialize_queue()
2074 spi_destroy_queue(ctlr); in spi_controller_initialize_queue()
2089 void spi_flush_queue(struct spi_controller *ctlr) in spi_flush_queue() argument
2091 if (ctlr->transfer == spi_queued_transfer) in spi_flush_queue()
2092 __spi_pump_messages(ctlr, false); in spi_flush_queue()
2098 static int of_spi_parse_dt(struct spi_controller *ctlr, struct spi_device *spi, in of_spi_parse_dt() argument
2134 dev_warn(&ctlr->dev, in of_spi_parse_dt()
2158 dev_warn(&ctlr->dev, in of_spi_parse_dt()
2165 if (spi_controller_is_slave(ctlr)) { in of_spi_parse_dt()
2167 dev_err(&ctlr->dev, "%pOF is not called 'slave'\n", in of_spi_parse_dt()
2177 dev_err(&ctlr->dev, "%pOF has no valid 'reg' property (%d)\n", in of_spi_parse_dt()
2191 of_register_spi_device(struct spi_controller *ctlr, struct device_node *nc) in of_register_spi_device() argument
2197 spi = spi_alloc_device(ctlr); in of_register_spi_device()
2199 dev_err(&ctlr->dev, "spi_device alloc error for %pOF\n", nc); in of_register_spi_device()
2208 dev_err(&ctlr->dev, "cannot find modalias for %pOF\n", nc); in of_register_spi_device()
2212 rc = of_spi_parse_dt(ctlr, spi, nc); in of_register_spi_device()
2224 dev_err(&ctlr->dev, "spi_device register error %pOF\n", nc); in of_register_spi_device()
2244 static void of_register_spi_devices(struct spi_controller *ctlr) in of_register_spi_devices() argument
2249 if (!ctlr->dev.of_node) in of_register_spi_devices()
2252 for_each_available_child_of_node(ctlr->dev.of_node, nc) { in of_register_spi_devices()
2255 spi = of_register_spi_device(ctlr, nc); in of_register_spi_devices()
2257 dev_warn(&ctlr->dev, in of_register_spi_devices()
2264 static void of_register_spi_devices(struct spi_controller *ctlr) { } in of_register_spi_devices() argument
2318 struct spi_controller *ctlr; member
2358 struct spi_controller *ctlr = lookup->ctlr; in acpi_spi_add_resource() local
2373 ACPI_HANDLE(ctlr->dev.parent) != parent_handle) in acpi_spi_add_resource()
2383 if (ctlr->fw_translate_cs) { in acpi_spi_add_resource()
2384 int cs = ctlr->fw_translate_cs(ctlr, in acpi_spi_add_resource()
2414 static acpi_status acpi_register_spi_device(struct spi_controller *ctlr, in acpi_register_spi_device() argument
2427 lookup.ctlr = ctlr; in acpi_register_spi_device()
2441 ACPI_HANDLE(ctlr->dev.parent) == parent_handle) { in acpi_register_spi_device()
2449 spi = spi_alloc_device(ctlr); in acpi_register_spi_device()
2451 dev_err(&ctlr->dev, "failed to allocate SPI device for %s\n", in acpi_register_spi_device()
2475 dev_err(&ctlr->dev, "failed to add SPI device %s from ACPI\n", in acpi_register_spi_device()
2486 struct spi_controller *ctlr = data; in acpi_spi_add_device() local
2492 return acpi_register_spi_device(ctlr, adev); in acpi_spi_add_device()
2497 static void acpi_register_spi_devices(struct spi_controller *ctlr) in acpi_register_spi_devices() argument
2502 handle = ACPI_HANDLE(ctlr->dev.parent); in acpi_register_spi_devices()
2508 acpi_spi_add_device, NULL, ctlr, NULL); in acpi_register_spi_devices()
2510 dev_warn(&ctlr->dev, "failed to enumerate SPI slaves\n"); in acpi_register_spi_devices()
2513 static inline void acpi_register_spi_devices(struct spi_controller *ctlr) {} in acpi_register_spi_devices() argument
2518 struct spi_controller *ctlr; in spi_controller_release() local
2520 ctlr = container_of(dev, struct spi_controller, dev); in spi_controller_release()
2521 kfree(ctlr); in spi_controller_release()
2539 struct spi_controller *ctlr = spi->controller; in spi_slave_abort() local
2541 if (spi_controller_is_slave(ctlr) && ctlr->slave_abort) in spi_slave_abort()
2542 return ctlr->slave_abort(ctlr); in spi_slave_abort()
2556 struct spi_controller *ctlr = container_of(dev, struct spi_controller, in slave_show() local
2560 child = device_find_child(&ctlr->dev, NULL, match_true); in slave_show()
2568 struct spi_controller *ctlr = container_of(dev, struct spi_controller, in slave_store() local
2579 child = device_find_child(&ctlr->dev, NULL, match_true); in slave_store()
2588 spi = spi_alloc_device(ctlr); in slave_store()
2659 struct spi_controller *ctlr; in __spi_alloc_controller() local
2660 size_t ctlr_size = ALIGN(sizeof(*ctlr), dma_get_cache_alignment()); in __spi_alloc_controller()
2665 ctlr = kzalloc(size + ctlr_size, GFP_KERNEL); in __spi_alloc_controller()
2666 if (!ctlr) in __spi_alloc_controller()
2669 device_initialize(&ctlr->dev); in __spi_alloc_controller()
2670 INIT_LIST_HEAD(&ctlr->queue); in __spi_alloc_controller()
2671 spin_lock_init(&ctlr->queue_lock); in __spi_alloc_controller()
2672 spin_lock_init(&ctlr->bus_lock_spinlock); in __spi_alloc_controller()
2673 mutex_init(&ctlr->bus_lock_mutex); in __spi_alloc_controller()
2674 mutex_init(&ctlr->io_mutex); in __spi_alloc_controller()
2675 mutex_init(&ctlr->add_lock); in __spi_alloc_controller()
2676 ctlr->bus_num = -1; in __spi_alloc_controller()
2677 ctlr->num_chipselect = 1; in __spi_alloc_controller()
2678 ctlr->slave = slave; in __spi_alloc_controller()
2680 ctlr->dev.class = &spi_slave_class; in __spi_alloc_controller()
2682 ctlr->dev.class = &spi_master_class; in __spi_alloc_controller()
2683 ctlr->dev.parent = dev; in __spi_alloc_controller()
2684 pm_suspend_ignore_children(&ctlr->dev, true); in __spi_alloc_controller()
2685 spi_controller_set_devdata(ctlr, (void *)ctlr + ctlr_size); in __spi_alloc_controller()
2687 return ctlr; in __spi_alloc_controller()
2691 static void devm_spi_release_controller(struct device *dev, void *ctlr) in devm_spi_release_controller() argument
2693 spi_controller_put(*(struct spi_controller **)ctlr); in devm_spi_release_controller()
2715 struct spi_controller **ptr, *ctlr; in __devm_spi_alloc_controller() local
2722 ctlr = __spi_alloc_controller(dev, size, slave); in __devm_spi_alloc_controller()
2723 if (ctlr) { in __devm_spi_alloc_controller()
2724 ctlr->devm_allocated = true; in __devm_spi_alloc_controller()
2725 *ptr = ctlr; in __devm_spi_alloc_controller()
2731 return ctlr; in __devm_spi_alloc_controller()
2736 static int of_spi_get_gpio_numbers(struct spi_controller *ctlr) in of_spi_get_gpio_numbers() argument
2739 struct device_node *np = ctlr->dev.of_node; in of_spi_get_gpio_numbers()
2745 ctlr->num_chipselect = max_t(int, nb, ctlr->num_chipselect); in of_spi_get_gpio_numbers()
2753 cs = devm_kcalloc(&ctlr->dev, ctlr->num_chipselect, sizeof(int), in of_spi_get_gpio_numbers()
2755 ctlr->cs_gpios = cs; in of_spi_get_gpio_numbers()
2757 if (!ctlr->cs_gpios) in of_spi_get_gpio_numbers()
2760 for (i = 0; i < ctlr->num_chipselect; i++) in of_spi_get_gpio_numbers()
2769 static int of_spi_get_gpio_numbers(struct spi_controller *ctlr) in of_spi_get_gpio_numbers() argument
2779 static int spi_get_gpio_descs(struct spi_controller *ctlr) in spi_get_gpio_descs() argument
2783 struct device *dev = &ctlr->dev; in spi_get_gpio_descs()
2795 ctlr->num_chipselect = max_t(int, nb, ctlr->num_chipselect); in spi_get_gpio_descs()
2797 cs = devm_kcalloc(dev, ctlr->num_chipselect, sizeof(*cs), in spi_get_gpio_descs()
2801 ctlr->cs_gpiods = cs; in spi_get_gpio_descs()
2832 if (ctlr->max_native_cs && i >= ctlr->max_native_cs) { in spi_get_gpio_descs()
2839 ctlr->unused_native_cs = ffs(~native_cs_mask) - 1; in spi_get_gpio_descs()
2841 if ((ctlr->flags & SPI_MASTER_GPIO_SS) && num_cs_gpios && in spi_get_gpio_descs()
2842 ctlr->max_native_cs && ctlr->unused_native_cs >= ctlr->max_native_cs) { in spi_get_gpio_descs()
2850 static int spi_controller_check_ops(struct spi_controller *ctlr) in spi_controller_check_ops() argument
2859 if (ctlr->mem_ops) { in spi_controller_check_ops()
2860 if (!ctlr->mem_ops->exec_op) in spi_controller_check_ops()
2862 } else if (!ctlr->transfer && !ctlr->transfer_one && in spi_controller_check_ops()
2863 !ctlr->transfer_one_message) { in spi_controller_check_ops()
2893 int spi_register_controller(struct spi_controller *ctlr) in spi_register_controller() argument
2895 struct device *dev = ctlr->dev.parent; in spi_register_controller()
2907 status = spi_controller_check_ops(ctlr); in spi_register_controller()
2911 if (ctlr->bus_num >= 0) { in spi_register_controller()
2914 id = idr_alloc(&spi_master_idr, ctlr, ctlr->bus_num, in spi_register_controller()
2915 ctlr->bus_num + 1, GFP_KERNEL); in spi_register_controller()
2919 ctlr->bus_num = id; in spi_register_controller()
2920 } else if (ctlr->dev.of_node) { in spi_register_controller()
2922 id = of_alias_get_id(ctlr->dev.of_node, "spi"); in spi_register_controller()
2924 ctlr->bus_num = id; in spi_register_controller()
2926 id = idr_alloc(&spi_master_idr, ctlr, ctlr->bus_num, in spi_register_controller()
2927 ctlr->bus_num + 1, GFP_KERNEL); in spi_register_controller()
2933 if (ctlr->bus_num < 0) { in spi_register_controller()
2941 id = idr_alloc(&spi_master_idr, ctlr, first_dynamic, in spi_register_controller()
2946 ctlr->bus_num = id; in spi_register_controller()
2948 ctlr->bus_lock_flag = 0; in spi_register_controller()
2949 init_completion(&ctlr->xfer_completion); in spi_register_controller()
2950 if (!ctlr->max_dma_len) in spi_register_controller()
2951 ctlr->max_dma_len = INT_MAX; in spi_register_controller()
2956 dev_set_name(&ctlr->dev, "spi%u", ctlr->bus_num); in spi_register_controller()
2958 if (!spi_controller_is_slave(ctlr)) { in spi_register_controller()
2959 if (ctlr->use_gpio_descriptors) { in spi_register_controller()
2960 status = spi_get_gpio_descs(ctlr); in spi_register_controller()
2967 ctlr->mode_bits |= SPI_CS_HIGH; in spi_register_controller()
2970 status = of_spi_get_gpio_numbers(ctlr); in spi_register_controller()
2980 if (!ctlr->num_chipselect) { in spi_register_controller()
2985 status = device_add(&ctlr->dev); in spi_register_controller()
2989 spi_controller_is_slave(ctlr) ? "slave" : "master", in spi_register_controller()
2990 dev_name(&ctlr->dev)); in spi_register_controller()
2997 if (ctlr->transfer) { in spi_register_controller()
2999 } else if (ctlr->transfer_one || ctlr->transfer_one_message) { in spi_register_controller()
3000 status = spi_controller_initialize_queue(ctlr); in spi_register_controller()
3002 device_del(&ctlr->dev); in spi_register_controller()
3007 spin_lock_init(&ctlr->statistics.lock); in spi_register_controller()
3010 list_add_tail(&ctlr->list, &spi_controller_list); in spi_register_controller()
3012 spi_match_controller_to_boardinfo(ctlr, &bi->board_info); in spi_register_controller()
3016 of_register_spi_devices(ctlr); in spi_register_controller()
3017 acpi_register_spi_devices(ctlr); in spi_register_controller()
3022 idr_remove(&spi_master_idr, ctlr->bus_num); in spi_register_controller()
3028 static void devm_spi_unregister(void *ctlr) in devm_spi_unregister() argument
3030 spi_unregister_controller(ctlr); in devm_spi_unregister()
3047 struct spi_controller *ctlr) in devm_spi_register_controller() argument
3051 ret = spi_register_controller(ctlr); in devm_spi_register_controller()
3055 return devm_add_action_or_reset(dev, devm_spi_unregister, ctlr); in devm_spi_register_controller()
3077 void spi_unregister_controller(struct spi_controller *ctlr) in spi_unregister_controller() argument
3080 int id = ctlr->bus_num; in spi_unregister_controller()
3084 mutex_lock(&ctlr->add_lock); in spi_unregister_controller()
3086 device_for_each_child(&ctlr->dev, NULL, __unregister); in spi_unregister_controller()
3092 if (ctlr->queued) { in spi_unregister_controller()
3093 if (spi_destroy_queue(ctlr)) in spi_unregister_controller()
3094 dev_err(&ctlr->dev, "queue remove failed\n"); in spi_unregister_controller()
3097 list_del(&ctlr->list); in spi_unregister_controller()
3100 device_del(&ctlr->dev); in spi_unregister_controller()
3104 if (found == ctlr) in spi_unregister_controller()
3109 mutex_unlock(&ctlr->add_lock); in spi_unregister_controller()
3114 if (!ctlr->devm_allocated) in spi_unregister_controller()
3115 put_device(&ctlr->dev); in spi_unregister_controller()
3119 int spi_controller_suspend(struct spi_controller *ctlr) in spi_controller_suspend() argument
3124 if (!ctlr->queued) in spi_controller_suspend()
3127 ret = spi_stop_queue(ctlr); in spi_controller_suspend()
3129 dev_err(&ctlr->dev, "queue stop failed\n"); in spi_controller_suspend()
3135 int spi_controller_resume(struct spi_controller *ctlr) in spi_controller_resume() argument
3139 if (!ctlr->queued) in spi_controller_resume()
3142 ret = spi_start_queue(ctlr); in spi_controller_resume()
3144 dev_err(&ctlr->dev, "queue restart failed\n"); in spi_controller_resume()
3154 static void __spi_replace_transfers_release(struct spi_controller *ctlr, in __spi_replace_transfers_release() argument
3163 rxfer->release(ctlr, msg, res); in __spi_replace_transfers_release()
3281 static int __spi_split_transfer_maxsize(struct spi_controller *ctlr, in __spi_split_transfer_maxsize() argument
3338 SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics, in __spi_split_transfer_maxsize()
3357 int spi_split_transfers_maxsize(struct spi_controller *ctlr, in spi_split_transfers_maxsize() argument
3373 ret = __spi_split_transfer_maxsize(ctlr, msg, &xfer, in spi_split_transfers_maxsize()
3390 static int __spi_validate_bits_per_word(struct spi_controller *ctlr, in __spi_validate_bits_per_word() argument
3393 if (ctlr->bits_per_word_mask) { in __spi_validate_bits_per_word()
3397 if (!(ctlr->bits_per_word_mask & SPI_BPW_MASK(bits_per_word))) in __spi_validate_bits_per_word()
3569 struct spi_controller *ctlr = spi->controller; in __spi_validate() local
3582 if ((spi->mode & SPI_CS_WORD) && (!(ctlr->mode_bits & SPI_CS_WORD) || in __spi_validate()
3593 ret = spi_split_transfers_maxsize(ctlr, message, maxsize, in __spi_validate()
3611 if ((ctlr->flags & SPI_CONTROLLER_HALF_DUPLEX) || in __spi_validate()
3613 unsigned flags = ctlr->flags; in __spi_validate()
3643 if (ctlr->max_speed_hz && xfer->speed_hz > ctlr->max_speed_hz) in __spi_validate()
3644 xfer->speed_hz = ctlr->max_speed_hz; in __spi_validate()
3646 if (__spi_validate_bits_per_word(ctlr, xfer->bits_per_word)) in __spi_validate()
3664 if (xfer->speed_hz && ctlr->min_speed_hz && in __spi_validate()
3665 xfer->speed_hz < ctlr->min_speed_hz) in __spi_validate()
3717 struct spi_controller *ctlr = spi->controller; in __spi_async() local
3724 if (!ctlr->transfer) in __spi_async()
3729 SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics, spi_async); in __spi_async()
3734 if (!ctlr->ptp_sts_supported) { in __spi_async()
3741 return ctlr->transfer(spi, message); in __spi_async()
3777 struct spi_controller *ctlr = spi->controller; in spi_async() local
3785 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in spi_async()
3787 if (ctlr->bus_lock_flag) in spi_async()
3792 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in spi_async()
3831 struct spi_controller *ctlr = spi->controller; in spi_async_locked() local
3839 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in spi_async_locked()
3843 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in spi_async_locked()
3865 struct spi_controller *ctlr = spi->controller; in __spi_sync() local
3876 SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics, spi_sync); in __spi_sync()
3884 if (ctlr->transfer == spi_queued_transfer) { in __spi_sync()
3885 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in __spi_sync()
3891 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in __spi_sync()
3900 if (ctlr->transfer == spi_queued_transfer) { in __spi_sync()
3901 SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics, in __spi_sync()
3905 __spi_pump_messages(ctlr, false); in __spi_sync()
3985 int spi_bus_lock(struct spi_controller *ctlr) in spi_bus_lock() argument
3989 mutex_lock(&ctlr->bus_lock_mutex); in spi_bus_lock()
3991 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in spi_bus_lock()
3992 ctlr->bus_lock_flag = 1; in spi_bus_lock()
3993 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in spi_bus_lock()
4014 int spi_bus_unlock(struct spi_controller *ctlr) in spi_bus_unlock() argument
4016 ctlr->bus_lock_flag = 0; in spi_bus_unlock()
4018 mutex_unlock(&ctlr->bus_lock_mutex); in spi_bus_unlock()
4133 struct spi_controller *ctlr; in of_spi_notify() local
4138 ctlr = of_find_spi_controller_by_node(rd->dn->parent); in of_spi_notify()
4139 if (ctlr == NULL) in of_spi_notify()
4143 put_device(&ctlr->dev); in of_spi_notify()
4147 spi = of_register_spi_device(ctlr, rd->dn); in of_spi_notify()
4148 put_device(&ctlr->dev); in of_spi_notify()
4219 struct spi_controller *ctlr; in acpi_spi_notify() local
4224 ctlr = acpi_spi_find_controller_by_adev(adev->parent); in acpi_spi_notify()
4225 if (!ctlr) in acpi_spi_notify()
4228 acpi_register_spi_device(ctlr, adev); in acpi_spi_notify()
4229 put_device(&ctlr->dev); in acpi_spi_notify()