Lines Matching refs:ctlr
148 struct spi_controller *ctlr = container_of(dev, \
150 return spi_statistics_##field##_show(ctlr->pcpu_statistics, buf); \
315 struct spi_controller *ctlr) in spi_statistics_add_transfer_stats() argument
332 (xfer->tx_buf != ctlr->dummy_tx)) in spi_statistics_add_transfer_stats()
335 (xfer->rx_buf != ctlr->dummy_rx)) in spi_statistics_add_transfer_stats()
567 struct spi_device *spi_alloc_device(struct spi_controller *ctlr) in spi_alloc_device() argument
571 if (!spi_controller_get(ctlr)) in spi_alloc_device()
576 spi_controller_put(ctlr); in spi_alloc_device()
583 spi_controller_put(ctlr); in spi_alloc_device()
587 spi->master = spi->controller = ctlr; in spi_alloc_device()
588 spi->dev.parent = &ctlr->dev; in spi_alloc_device()
591 spi->mode = ctlr->buswidth_override_bits; in spi_alloc_device()
630 struct spi_controller *ctlr = spi->controller; in __spi_add_device() local
631 struct device *dev = ctlr->dev.parent; in __spi_add_device()
635 if (spi_get_chipselect(spi, 0) >= ctlr->num_chipselect) { in __spi_add_device()
637 ctlr->num_chipselect); in __spi_add_device()
658 !device_is_registered(&ctlr->dev)) { in __spi_add_device()
662 if (ctlr->cs_gpiods) in __spi_add_device()
663 spi_set_csgpiod(spi, 0, ctlr->cs_gpiods[spi_get_chipselect(spi, 0)]); in __spi_add_device()
701 struct spi_controller *ctlr = spi->controller; in spi_add_device() local
704 mutex_lock(&ctlr->add_lock); in spi_add_device()
706 mutex_unlock(&ctlr->add_lock); in spi_add_device()
725 struct spi_device *spi_new_device(struct spi_controller *ctlr, in spi_new_device() argument
739 proxy = spi_alloc_device(ctlr); in spi_new_device()
757 dev_err(&ctlr->dev, "failed to add software node to '%s': %d\n", in spi_new_device()
801 static void spi_match_controller_to_boardinfo(struct spi_controller *ctlr, in spi_match_controller_to_boardinfo() argument
806 if (ctlr->bus_num != bi->bus_num) in spi_match_controller_to_boardinfo()
809 dev = spi_new_device(ctlr, bi); in spi_match_controller_to_boardinfo()
811 dev_err(ctlr->dev.parent, "can't create new device for %s\n", in spi_match_controller_to_boardinfo()
849 struct spi_controller *ctlr; in spi_register_board_info() local
855 list_for_each_entry(ctlr, &spi_controller_list, list) in spi_register_board_info()
856 spi_match_controller_to_boardinfo(ctlr, in spi_register_board_info()
930 static void spi_res_release(struct spi_controller *ctlr, struct spi_message *message) in spi_res_release() argument
936 res->release(ctlr, message, res->data); in spi_res_release()
1005 static int spi_map_buf_attrs(struct spi_controller *ctlr, struct device *dev, in spi_map_buf_attrs() argument
1030 desc_len = min_t(size_t, max_seg_size, ctlr->max_dma_len); in spi_map_buf_attrs()
1082 int spi_map_buf(struct spi_controller *ctlr, struct device *dev, in spi_map_buf() argument
1086 return spi_map_buf_attrs(ctlr, dev, sgt, buf, len, dir, 0); in spi_map_buf()
1089 static void spi_unmap_buf_attrs(struct spi_controller *ctlr, in spi_unmap_buf_attrs() argument
1102 void spi_unmap_buf(struct spi_controller *ctlr, struct device *dev, in spi_unmap_buf() argument
1105 spi_unmap_buf_attrs(ctlr, dev, sgt, dir, 0); in spi_unmap_buf()
1108 static int __spi_map_msg(struct spi_controller *ctlr, struct spi_message *msg) in __spi_map_msg() argument
1114 if (!ctlr->can_dma) in __spi_map_msg()
1117 if (ctlr->dma_tx) in __spi_map_msg()
1118 tx_dev = ctlr->dma_tx->device->dev; in __spi_map_msg()
1119 else if (ctlr->dma_map_dev) in __spi_map_msg()
1120 tx_dev = ctlr->dma_map_dev; in __spi_map_msg()
1122 tx_dev = ctlr->dev.parent; in __spi_map_msg()
1124 if (ctlr->dma_rx) in __spi_map_msg()
1125 rx_dev = ctlr->dma_rx->device->dev; in __spi_map_msg()
1126 else if (ctlr->dma_map_dev) in __spi_map_msg()
1127 rx_dev = ctlr->dma_map_dev; in __spi_map_msg()
1129 rx_dev = ctlr->dev.parent; in __spi_map_msg()
1136 if (!ctlr->can_dma(ctlr, msg->spi, xfer)) in __spi_map_msg()
1140 ret = spi_map_buf_attrs(ctlr, tx_dev, &xfer->tx_sg, in __spi_map_msg()
1149 ret = spi_map_buf_attrs(ctlr, rx_dev, &xfer->rx_sg, in __spi_map_msg()
1153 spi_unmap_buf_attrs(ctlr, tx_dev, in __spi_map_msg()
1165 ctlr->cur_rx_dma_dev = rx_dev; in __spi_map_msg()
1166 ctlr->cur_tx_dma_dev = tx_dev; in __spi_map_msg()
1167 ctlr->cur_msg_mapped = true; in __spi_map_msg()
1172 static int __spi_unmap_msg(struct spi_controller *ctlr, struct spi_message *msg) in __spi_unmap_msg() argument
1174 struct device *rx_dev = ctlr->cur_rx_dma_dev; in __spi_unmap_msg()
1175 struct device *tx_dev = ctlr->cur_tx_dma_dev; in __spi_unmap_msg()
1178 if (!ctlr->cur_msg_mapped || !ctlr->can_dma) in __spi_unmap_msg()
1185 if (!ctlr->can_dma(ctlr, msg->spi, xfer)) in __spi_unmap_msg()
1188 spi_unmap_buf_attrs(ctlr, rx_dev, &xfer->rx_sg, in __spi_unmap_msg()
1190 spi_unmap_buf_attrs(ctlr, tx_dev, &xfer->tx_sg, in __spi_unmap_msg()
1194 ctlr->cur_msg_mapped = false; in __spi_unmap_msg()
1199 static void spi_dma_sync_for_device(struct spi_controller *ctlr, in spi_dma_sync_for_device() argument
1202 struct device *rx_dev = ctlr->cur_rx_dma_dev; in spi_dma_sync_for_device()
1203 struct device *tx_dev = ctlr->cur_tx_dma_dev; in spi_dma_sync_for_device()
1205 if (!ctlr->cur_msg_mapped) in spi_dma_sync_for_device()
1214 static void spi_dma_sync_for_cpu(struct spi_controller *ctlr, in spi_dma_sync_for_cpu() argument
1217 struct device *rx_dev = ctlr->cur_rx_dma_dev; in spi_dma_sync_for_cpu()
1218 struct device *tx_dev = ctlr->cur_tx_dma_dev; in spi_dma_sync_for_cpu()
1220 if (!ctlr->cur_msg_mapped) in spi_dma_sync_for_cpu()
1229 static inline int __spi_map_msg(struct spi_controller *ctlr, in __spi_map_msg() argument
1235 static inline int __spi_unmap_msg(struct spi_controller *ctlr, in __spi_unmap_msg() argument
1252 static inline int spi_unmap_msg(struct spi_controller *ctlr, in spi_unmap_msg() argument
1262 if (xfer->tx_buf == ctlr->dummy_tx) in spi_unmap_msg()
1264 if (xfer->rx_buf == ctlr->dummy_rx) in spi_unmap_msg()
1268 return __spi_unmap_msg(ctlr, msg); in spi_unmap_msg()
1271 static int spi_map_msg(struct spi_controller *ctlr, struct spi_message *msg) in spi_map_msg() argument
1277 if ((ctlr->flags & (SPI_CONTROLLER_MUST_RX | SPI_CONTROLLER_MUST_TX)) in spi_map_msg()
1283 if ((ctlr->flags & SPI_CONTROLLER_MUST_TX) && in spi_map_msg()
1286 if ((ctlr->flags & SPI_CONTROLLER_MUST_RX) && in spi_map_msg()
1292 tmp = krealloc(ctlr->dummy_tx, max_tx, in spi_map_msg()
1296 ctlr->dummy_tx = tmp; in spi_map_msg()
1300 tmp = krealloc(ctlr->dummy_rx, max_rx, in spi_map_msg()
1304 ctlr->dummy_rx = tmp; in spi_map_msg()
1313 xfer->tx_buf = ctlr->dummy_tx; in spi_map_msg()
1315 xfer->rx_buf = ctlr->dummy_rx; in spi_map_msg()
1320 return __spi_map_msg(ctlr, msg); in spi_map_msg()
1323 static int spi_transfer_wait(struct spi_controller *ctlr, in spi_transfer_wait() argument
1327 struct spi_statistics __percpu *statm = ctlr->pcpu_statistics; in spi_transfer_wait()
1332 if (spi_controller_is_slave(ctlr)) { in spi_transfer_wait()
1333 if (wait_for_completion_interruptible(&ctlr->xfer_completion)) { in spi_transfer_wait()
1358 ms = wait_for_completion_timeout(&ctlr->xfer_completion, in spi_transfer_wait()
1485 static int spi_transfer_one_message(struct spi_controller *ctlr, in spi_transfer_one_message() argument
1491 struct spi_statistics __percpu *statm = ctlr->pcpu_statistics; in spi_transfer_one_message()
1503 spi_statistics_add_transfer_stats(statm, xfer, ctlr); in spi_transfer_one_message()
1504 spi_statistics_add_transfer_stats(stats, xfer, ctlr); in spi_transfer_one_message()
1506 if (!ctlr->ptp_sts_supported) { in spi_transfer_one_message()
1512 reinit_completion(&ctlr->xfer_completion); in spi_transfer_one_message()
1515 spi_dma_sync_for_device(ctlr, xfer); in spi_transfer_one_message()
1516 ret = ctlr->transfer_one(ctlr, msg->spi, xfer); in spi_transfer_one_message()
1518 spi_dma_sync_for_cpu(ctlr, xfer); in spi_transfer_one_message()
1520 if (ctlr->cur_msg_mapped && in spi_transfer_one_message()
1522 __spi_unmap_msg(ctlr, msg); in spi_transfer_one_message()
1523 ctlr->fallback = true; in spi_transfer_one_message()
1538 ret = spi_transfer_wait(ctlr, msg, xfer); in spi_transfer_one_message()
1543 spi_dma_sync_for_cpu(ctlr, xfer); in spi_transfer_one_message()
1551 if (!ctlr->ptp_sts_supported) { in spi_transfer_one_message()
1589 if (msg->status && ctlr->handle_err) in spi_transfer_one_message()
1590 ctlr->handle_err(ctlr, msg); in spi_transfer_one_message()
1592 spi_finalize_current_message(ctlr); in spi_transfer_one_message()
1605 void spi_finalize_current_transfer(struct spi_controller *ctlr) in spi_finalize_current_transfer() argument
1607 complete(&ctlr->xfer_completion); in spi_finalize_current_transfer()
1611 static void spi_idle_runtime_pm(struct spi_controller *ctlr) in spi_idle_runtime_pm() argument
1613 if (ctlr->auto_runtime_pm) { in spi_idle_runtime_pm()
1614 pm_runtime_mark_last_busy(ctlr->dev.parent); in spi_idle_runtime_pm()
1615 pm_runtime_put_autosuspend(ctlr->dev.parent); in spi_idle_runtime_pm()
1619 static int __spi_pump_transfer_message(struct spi_controller *ctlr, in __spi_pump_transfer_message() argument
1625 if (!was_busy && ctlr->auto_runtime_pm) { in __spi_pump_transfer_message()
1626 ret = pm_runtime_get_sync(ctlr->dev.parent); in __spi_pump_transfer_message()
1628 pm_runtime_put_noidle(ctlr->dev.parent); in __spi_pump_transfer_message()
1629 dev_err(&ctlr->dev, "Failed to power device: %d\n", in __spi_pump_transfer_message()
1633 spi_finalize_current_message(ctlr); in __spi_pump_transfer_message()
1640 trace_spi_controller_busy(ctlr); in __spi_pump_transfer_message()
1642 if (!was_busy && ctlr->prepare_transfer_hardware) { in __spi_pump_transfer_message()
1643 ret = ctlr->prepare_transfer_hardware(ctlr); in __spi_pump_transfer_message()
1645 dev_err(&ctlr->dev, in __spi_pump_transfer_message()
1649 if (ctlr->auto_runtime_pm) in __spi_pump_transfer_message()
1650 pm_runtime_put(ctlr->dev.parent); in __spi_pump_transfer_message()
1653 spi_finalize_current_message(ctlr); in __spi_pump_transfer_message()
1661 ret = spi_split_transfers_maxsize(ctlr, msg, in __spi_pump_transfer_message()
1666 spi_finalize_current_message(ctlr); in __spi_pump_transfer_message()
1670 if (ctlr->prepare_message) { in __spi_pump_transfer_message()
1671 ret = ctlr->prepare_message(ctlr, msg); in __spi_pump_transfer_message()
1673 dev_err(&ctlr->dev, "failed to prepare message: %d\n", in __spi_pump_transfer_message()
1676 spi_finalize_current_message(ctlr); in __spi_pump_transfer_message()
1682 ret = spi_map_msg(ctlr, msg); in __spi_pump_transfer_message()
1685 spi_finalize_current_message(ctlr); in __spi_pump_transfer_message()
1689 if (!ctlr->ptp_sts_supported && !ctlr->transfer_one) { in __spi_pump_transfer_message()
1709 WRITE_ONCE(ctlr->cur_msg_incomplete, true); in __spi_pump_transfer_message()
1710 WRITE_ONCE(ctlr->cur_msg_need_completion, false); in __spi_pump_transfer_message()
1711 reinit_completion(&ctlr->cur_msg_completion); in __spi_pump_transfer_message()
1714 ret = ctlr->transfer_one_message(ctlr, msg); in __spi_pump_transfer_message()
1716 dev_err(&ctlr->dev, in __spi_pump_transfer_message()
1721 WRITE_ONCE(ctlr->cur_msg_need_completion, true); in __spi_pump_transfer_message()
1723 if (READ_ONCE(ctlr->cur_msg_incomplete)) in __spi_pump_transfer_message()
1724 wait_for_completion(&ctlr->cur_msg_completion); in __spi_pump_transfer_message()
1742 static void __spi_pump_messages(struct spi_controller *ctlr, bool in_kthread) in __spi_pump_messages() argument
1750 mutex_lock(&ctlr->io_mutex); in __spi_pump_messages()
1753 spin_lock_irqsave(&ctlr->queue_lock, flags); in __spi_pump_messages()
1756 if (ctlr->cur_msg) in __spi_pump_messages()
1760 if (list_empty(&ctlr->queue) || !ctlr->running) { in __spi_pump_messages()
1761 if (!ctlr->busy) in __spi_pump_messages()
1766 if (!ctlr->dummy_rx && !ctlr->dummy_tx && in __spi_pump_messages()
1767 !ctlr->unprepare_transfer_hardware) { in __spi_pump_messages()
1768 spi_idle_runtime_pm(ctlr); in __spi_pump_messages()
1769 ctlr->busy = false; in __spi_pump_messages()
1770 ctlr->queue_empty = true; in __spi_pump_messages()
1771 trace_spi_controller_idle(ctlr); in __spi_pump_messages()
1773 kthread_queue_work(ctlr->kworker, in __spi_pump_messages()
1774 &ctlr->pump_messages); in __spi_pump_messages()
1779 ctlr->busy = false; in __spi_pump_messages()
1780 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1782 kfree(ctlr->dummy_rx); in __spi_pump_messages()
1783 ctlr->dummy_rx = NULL; in __spi_pump_messages()
1784 kfree(ctlr->dummy_tx); in __spi_pump_messages()
1785 ctlr->dummy_tx = NULL; in __spi_pump_messages()
1786 if (ctlr->unprepare_transfer_hardware && in __spi_pump_messages()
1787 ctlr->unprepare_transfer_hardware(ctlr)) in __spi_pump_messages()
1788 dev_err(&ctlr->dev, in __spi_pump_messages()
1790 spi_idle_runtime_pm(ctlr); in __spi_pump_messages()
1791 trace_spi_controller_idle(ctlr); in __spi_pump_messages()
1793 spin_lock_irqsave(&ctlr->queue_lock, flags); in __spi_pump_messages()
1794 ctlr->queue_empty = true; in __spi_pump_messages()
1799 msg = list_first_entry(&ctlr->queue, struct spi_message, queue); in __spi_pump_messages()
1800 ctlr->cur_msg = msg; in __spi_pump_messages()
1803 if (ctlr->busy) in __spi_pump_messages()
1806 ctlr->busy = true; in __spi_pump_messages()
1807 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1809 ret = __spi_pump_transfer_message(ctlr, msg, was_busy); in __spi_pump_messages()
1810 kthread_queue_work(ctlr->kworker, &ctlr->pump_messages); in __spi_pump_messages()
1812 ctlr->cur_msg = NULL; in __spi_pump_messages()
1813 ctlr->fallback = false; in __spi_pump_messages()
1815 mutex_unlock(&ctlr->io_mutex); in __spi_pump_messages()
1823 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1824 mutex_unlock(&ctlr->io_mutex); in __spi_pump_messages()
1833 struct spi_controller *ctlr = in spi_pump_messages() local
1836 __spi_pump_messages(ctlr, true); in spi_pump_messages()
1859 void spi_take_timestamp_pre(struct spi_controller *ctlr, in spi_take_timestamp_pre() argument
1876 local_irq_save(ctlr->irq_flags); in spi_take_timestamp_pre()
1896 void spi_take_timestamp_post(struct spi_controller *ctlr, in spi_take_timestamp_post() argument
1912 local_irq_restore(ctlr->irq_flags); in spi_take_timestamp_post()
1938 static void spi_set_thread_rt(struct spi_controller *ctlr) in spi_set_thread_rt() argument
1940 dev_info(&ctlr->dev, in spi_set_thread_rt()
1942 sched_set_fifo(ctlr->kworker->task); in spi_set_thread_rt()
1945 static int spi_init_queue(struct spi_controller *ctlr) in spi_init_queue() argument
1947 ctlr->running = false; in spi_init_queue()
1948 ctlr->busy = false; in spi_init_queue()
1949 ctlr->queue_empty = true; in spi_init_queue()
1951 ctlr->kworker = kthread_create_worker(0, dev_name(&ctlr->dev)); in spi_init_queue()
1952 if (IS_ERR(ctlr->kworker)) { in spi_init_queue()
1953 dev_err(&ctlr->dev, "failed to create message pump kworker\n"); in spi_init_queue()
1954 return PTR_ERR(ctlr->kworker); in spi_init_queue()
1957 kthread_init_work(&ctlr->pump_messages, spi_pump_messages); in spi_init_queue()
1966 if (ctlr->rt) in spi_init_queue()
1967 spi_set_thread_rt(ctlr); in spi_init_queue()
1982 struct spi_message *spi_get_next_queued_message(struct spi_controller *ctlr) in spi_get_next_queued_message() argument
1988 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_get_next_queued_message()
1989 next = list_first_entry_or_null(&ctlr->queue, struct spi_message, in spi_get_next_queued_message()
1991 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_get_next_queued_message()
2004 void spi_finalize_current_message(struct spi_controller *ctlr) in spi_finalize_current_message() argument
2010 mesg = ctlr->cur_msg; in spi_finalize_current_message()
2012 if (!ctlr->ptp_sts_supported && !ctlr->transfer_one) { in spi_finalize_current_message()
2019 if (unlikely(ctlr->ptp_sts_supported)) in spi_finalize_current_message()
2023 spi_unmap_msg(ctlr, mesg); in spi_finalize_current_message()
2032 spi_res_release(ctlr, mesg); in spi_finalize_current_message()
2034 if (mesg->prepared && ctlr->unprepare_message) { in spi_finalize_current_message()
2035 ret = ctlr->unprepare_message(ctlr, mesg); in spi_finalize_current_message()
2037 dev_err(&ctlr->dev, "failed to unprepare message: %d\n", in spi_finalize_current_message()
2044 WRITE_ONCE(ctlr->cur_msg_incomplete, false); in spi_finalize_current_message()
2046 if (READ_ONCE(ctlr->cur_msg_need_completion)) in spi_finalize_current_message()
2047 complete(&ctlr->cur_msg_completion); in spi_finalize_current_message()
2057 static int spi_start_queue(struct spi_controller *ctlr) in spi_start_queue() argument
2061 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_start_queue()
2063 if (ctlr->running || ctlr->busy) { in spi_start_queue()
2064 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_start_queue()
2068 ctlr->running = true; in spi_start_queue()
2069 ctlr->cur_msg = NULL; in spi_start_queue()
2070 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_start_queue()
2072 kthread_queue_work(ctlr->kworker, &ctlr->pump_messages); in spi_start_queue()
2077 static int spi_stop_queue(struct spi_controller *ctlr) in spi_stop_queue() argument
2083 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_stop_queue()
2091 while ((!list_empty(&ctlr->queue) || ctlr->busy) && limit--) { in spi_stop_queue()
2092 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_stop_queue()
2094 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_stop_queue()
2097 if (!list_empty(&ctlr->queue) || ctlr->busy) in spi_stop_queue()
2100 ctlr->running = false; in spi_stop_queue()
2102 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_stop_queue()
2105 dev_warn(&ctlr->dev, "could not stop message queue\n"); in spi_stop_queue()
2111 static int spi_destroy_queue(struct spi_controller *ctlr) in spi_destroy_queue() argument
2115 ret = spi_stop_queue(ctlr); in spi_destroy_queue()
2124 dev_err(&ctlr->dev, "problem destroying queue\n"); in spi_destroy_queue()
2128 kthread_destroy_worker(ctlr->kworker); in spi_destroy_queue()
2137 struct spi_controller *ctlr = spi->controller; in __spi_queued_transfer() local
2140 spin_lock_irqsave(&ctlr->queue_lock, flags); in __spi_queued_transfer()
2142 if (!ctlr->running) { in __spi_queued_transfer()
2143 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_queued_transfer()
2149 list_add_tail(&msg->queue, &ctlr->queue); in __spi_queued_transfer()
2150 ctlr->queue_empty = false; in __spi_queued_transfer()
2151 if (!ctlr->busy && need_pump) in __spi_queued_transfer()
2152 kthread_queue_work(ctlr->kworker, &ctlr->pump_messages); in __spi_queued_transfer()
2154 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_queued_transfer()
2170 static int spi_controller_initialize_queue(struct spi_controller *ctlr) in spi_controller_initialize_queue() argument
2174 ctlr->transfer = spi_queued_transfer; in spi_controller_initialize_queue()
2175 if (!ctlr->transfer_one_message) in spi_controller_initialize_queue()
2176 ctlr->transfer_one_message = spi_transfer_one_message; in spi_controller_initialize_queue()
2179 ret = spi_init_queue(ctlr); in spi_controller_initialize_queue()
2181 dev_err(&ctlr->dev, "problem initializing queue\n"); in spi_controller_initialize_queue()
2184 ctlr->queued = true; in spi_controller_initialize_queue()
2185 ret = spi_start_queue(ctlr); in spi_controller_initialize_queue()
2187 dev_err(&ctlr->dev, "problem starting queue\n"); in spi_controller_initialize_queue()
2194 spi_destroy_queue(ctlr); in spi_controller_initialize_queue()
2209 void spi_flush_queue(struct spi_controller *ctlr) in spi_flush_queue() argument
2211 if (ctlr->transfer == spi_queued_transfer) in spi_flush_queue()
2212 __spi_pump_messages(ctlr, false); in spi_flush_queue()
2234 static int of_spi_parse_dt(struct spi_controller *ctlr, struct spi_device *spi, in of_spi_parse_dt() argument
2270 dev_warn(&ctlr->dev, in of_spi_parse_dt()
2294 dev_warn(&ctlr->dev, in of_spi_parse_dt()
2301 if (spi_controller_is_slave(ctlr)) { in of_spi_parse_dt()
2303 dev_err(&ctlr->dev, "%pOF is not called 'slave'\n", in of_spi_parse_dt()
2313 dev_err(&ctlr->dev, "%pOF has no valid 'reg' property (%d)\n", in of_spi_parse_dt()
2332 of_register_spi_device(struct spi_controller *ctlr, struct device_node *nc) in of_register_spi_device() argument
2338 spi = spi_alloc_device(ctlr); in of_register_spi_device()
2340 dev_err(&ctlr->dev, "spi_device alloc error for %pOF\n", nc); in of_register_spi_device()
2349 dev_err(&ctlr->dev, "cannot find modalias for %pOF\n", nc); in of_register_spi_device()
2353 rc = of_spi_parse_dt(ctlr, spi, nc); in of_register_spi_device()
2365 dev_err(&ctlr->dev, "spi_device register error %pOF\n", nc); in of_register_spi_device()
2385 static void of_register_spi_devices(struct spi_controller *ctlr) in of_register_spi_devices() argument
2390 for_each_available_child_of_node(ctlr->dev.of_node, nc) { in of_register_spi_devices()
2393 spi = of_register_spi_device(ctlr, nc); in of_register_spi_devices()
2395 dev_warn(&ctlr->dev, in of_register_spi_devices()
2402 static void of_register_spi_devices(struct spi_controller *ctlr) { } in of_register_spi_devices() argument
2420 struct spi_controller *ctlr = spi->controller; in spi_new_ancillary_device() local
2425 ancillary = spi_alloc_device(ctlr); in spi_new_ancillary_device()
2440 WARN_ON(!mutex_is_locked(&ctlr->add_lock)); in spi_new_ancillary_device()
2459 struct spi_controller *ctlr; member
2543 struct spi_controller *ctlr = lookup->ctlr; in acpi_spi_add_resource() local
2563 if (ctlr) { in acpi_spi_add_resource()
2564 if (ACPI_HANDLE(ctlr->dev.parent) != parent_handle) in acpi_spi_add_resource()
2573 ctlr = acpi_spi_find_controller_by_adev(adev); in acpi_spi_add_resource()
2574 if (!ctlr) in acpi_spi_add_resource()
2577 lookup->ctlr = ctlr; in acpi_spi_add_resource()
2587 if (ctlr->fw_translate_cs) { in acpi_spi_add_resource()
2588 int cs = ctlr->fw_translate_cs(ctlr, in acpi_spi_add_resource()
2634 struct spi_device *acpi_spi_device_alloc(struct spi_controller *ctlr, in acpi_spi_device_alloc() argument
2644 if (!ctlr && index == -1) in acpi_spi_device_alloc()
2647 lookup.ctlr = ctlr; in acpi_spi_device_alloc()
2663 ACPI_HANDLE(lookup.ctlr->dev.parent) == parent_handle) { in acpi_spi_device_alloc()
2671 spi = spi_alloc_device(lookup.ctlr); in acpi_spi_device_alloc()
2673 dev_err(&lookup.ctlr->dev, "failed to allocate SPI device for %s\n", in acpi_spi_device_alloc()
2689 static acpi_status acpi_register_spi_device(struct spi_controller *ctlr, in acpi_register_spi_device() argument
2698 spi = acpi_spi_device_alloc(ctlr, adev, -1); in acpi_register_spi_device()
2717 dev_err(&ctlr->dev, "failed to add SPI device %s from ACPI\n", in acpi_register_spi_device()
2729 struct spi_controller *ctlr = data; in acpi_spi_add_device() local
2734 return acpi_register_spi_device(ctlr, adev); in acpi_spi_add_device()
2739 static void acpi_register_spi_devices(struct spi_controller *ctlr) in acpi_register_spi_devices() argument
2744 handle = ACPI_HANDLE(ctlr->dev.parent); in acpi_register_spi_devices()
2750 acpi_spi_add_device, NULL, ctlr, NULL); in acpi_register_spi_devices()
2752 dev_warn(&ctlr->dev, "failed to enumerate SPI slaves\n"); in acpi_register_spi_devices()
2755 static inline void acpi_register_spi_devices(struct spi_controller *ctlr) {} in acpi_register_spi_devices() argument
2760 struct spi_controller *ctlr; in spi_controller_release() local
2762 ctlr = container_of(dev, struct spi_controller, dev); in spi_controller_release()
2763 kfree(ctlr); in spi_controller_release()
2780 struct spi_controller *ctlr = spi->controller; in spi_slave_abort() local
2782 if (spi_controller_is_slave(ctlr) && ctlr->slave_abort) in spi_slave_abort()
2783 return ctlr->slave_abort(ctlr); in spi_slave_abort()
2791 struct spi_controller *ctlr = spi->controller; in spi_target_abort() local
2793 if (spi_controller_is_target(ctlr) && ctlr->target_abort) in spi_target_abort()
2794 return ctlr->target_abort(ctlr); in spi_target_abort()
2803 struct spi_controller *ctlr = container_of(dev, struct spi_controller, in slave_show() local
2807 child = device_find_any_child(&ctlr->dev); in slave_show()
2814 struct spi_controller *ctlr = container_of(dev, struct spi_controller, in slave_store() local
2825 child = device_find_any_child(&ctlr->dev); in slave_store()
2834 spi = spi_alloc_device(ctlr); in slave_store()
2904 struct spi_controller *ctlr; in __spi_alloc_controller() local
2905 size_t ctlr_size = ALIGN(sizeof(*ctlr), dma_get_cache_alignment()); in __spi_alloc_controller()
2910 ctlr = kzalloc(size + ctlr_size, GFP_KERNEL); in __spi_alloc_controller()
2911 if (!ctlr) in __spi_alloc_controller()
2914 device_initialize(&ctlr->dev); in __spi_alloc_controller()
2915 INIT_LIST_HEAD(&ctlr->queue); in __spi_alloc_controller()
2916 spin_lock_init(&ctlr->queue_lock); in __spi_alloc_controller()
2917 spin_lock_init(&ctlr->bus_lock_spinlock); in __spi_alloc_controller()
2918 mutex_init(&ctlr->bus_lock_mutex); in __spi_alloc_controller()
2919 mutex_init(&ctlr->io_mutex); in __spi_alloc_controller()
2920 mutex_init(&ctlr->add_lock); in __spi_alloc_controller()
2921 ctlr->bus_num = -1; in __spi_alloc_controller()
2922 ctlr->num_chipselect = 1; in __spi_alloc_controller()
2923 ctlr->slave = slave; in __spi_alloc_controller()
2925 ctlr->dev.class = &spi_slave_class; in __spi_alloc_controller()
2927 ctlr->dev.class = &spi_master_class; in __spi_alloc_controller()
2928 ctlr->dev.parent = dev; in __spi_alloc_controller()
2929 pm_suspend_ignore_children(&ctlr->dev, true); in __spi_alloc_controller()
2930 spi_controller_set_devdata(ctlr, (void *)ctlr + ctlr_size); in __spi_alloc_controller()
2932 return ctlr; in __spi_alloc_controller()
2936 static void devm_spi_release_controller(struct device *dev, void *ctlr) in devm_spi_release_controller() argument
2938 spi_controller_put(*(struct spi_controller **)ctlr); in devm_spi_release_controller()
2960 struct spi_controller **ptr, *ctlr; in __devm_spi_alloc_controller() local
2967 ctlr = __spi_alloc_controller(dev, size, slave); in __devm_spi_alloc_controller()
2968 if (ctlr) { in __devm_spi_alloc_controller()
2969 ctlr->devm_allocated = true; in __devm_spi_alloc_controller()
2970 *ptr = ctlr; in __devm_spi_alloc_controller()
2976 return ctlr; in __devm_spi_alloc_controller()
2984 static int spi_get_gpio_descs(struct spi_controller *ctlr) in spi_get_gpio_descs() argument
2988 struct device *dev = &ctlr->dev; in spi_get_gpio_descs()
3000 ctlr->num_chipselect = max_t(int, nb, ctlr->num_chipselect); in spi_get_gpio_descs()
3002 cs = devm_kcalloc(dev, ctlr->num_chipselect, sizeof(*cs), in spi_get_gpio_descs()
3006 ctlr->cs_gpiods = cs; in spi_get_gpio_descs()
3037 if (ctlr->max_native_cs && i >= ctlr->max_native_cs) { in spi_get_gpio_descs()
3044 ctlr->unused_native_cs = ffs(~native_cs_mask) - 1; in spi_get_gpio_descs()
3046 if ((ctlr->flags & SPI_CONTROLLER_GPIO_SS) && num_cs_gpios && in spi_get_gpio_descs()
3047 ctlr->max_native_cs && ctlr->unused_native_cs >= ctlr->max_native_cs) { in spi_get_gpio_descs()
3055 static int spi_controller_check_ops(struct spi_controller *ctlr) in spi_controller_check_ops() argument
3064 if (!ctlr->mem_ops || !ctlr->mem_ops->exec_op) { in spi_controller_check_ops()
3065 if (!ctlr->transfer && !ctlr->transfer_one && in spi_controller_check_ops()
3066 !ctlr->transfer_one_message) { in spi_controller_check_ops()
3075 static int spi_controller_id_alloc(struct spi_controller *ctlr, int start, int end) in spi_controller_id_alloc() argument
3080 id = idr_alloc(&spi_master_idr, ctlr, start, end, GFP_KERNEL); in spi_controller_id_alloc()
3084 ctlr->bus_num = id; in spi_controller_id_alloc()
3111 int spi_register_controller(struct spi_controller *ctlr) in spi_register_controller() argument
3113 struct device *dev = ctlr->dev.parent; in spi_register_controller()
3125 status = spi_controller_check_ops(ctlr); in spi_register_controller()
3129 if (ctlr->bus_num < 0) in spi_register_controller()
3130 ctlr->bus_num = of_alias_get_id(ctlr->dev.of_node, "spi"); in spi_register_controller()
3131 if (ctlr->bus_num >= 0) { in spi_register_controller()
3133 status = spi_controller_id_alloc(ctlr, ctlr->bus_num, ctlr->bus_num + 1); in spi_register_controller()
3137 if (ctlr->bus_num < 0) { in spi_register_controller()
3144 status = spi_controller_id_alloc(ctlr, first_dynamic, 0); in spi_register_controller()
3148 ctlr->bus_lock_flag = 0; in spi_register_controller()
3149 init_completion(&ctlr->xfer_completion); in spi_register_controller()
3150 init_completion(&ctlr->cur_msg_completion); in spi_register_controller()
3151 if (!ctlr->max_dma_len) in spi_register_controller()
3152 ctlr->max_dma_len = INT_MAX; in spi_register_controller()
3158 dev_set_name(&ctlr->dev, "spi%u", ctlr->bus_num); in spi_register_controller()
3160 if (!spi_controller_is_slave(ctlr) && ctlr->use_gpio_descriptors) { in spi_register_controller()
3161 status = spi_get_gpio_descs(ctlr); in spi_register_controller()
3168 ctlr->mode_bits |= SPI_CS_HIGH; in spi_register_controller()
3175 if (!ctlr->num_chipselect) { in spi_register_controller()
3181 ctlr->last_cs = -1; in spi_register_controller()
3183 status = device_add(&ctlr->dev); in spi_register_controller()
3187 spi_controller_is_slave(ctlr) ? "slave" : "master", in spi_register_controller()
3188 dev_name(&ctlr->dev)); in spi_register_controller()
3195 if (ctlr->transfer) { in spi_register_controller()
3197 } else if (ctlr->transfer_one || ctlr->transfer_one_message) { in spi_register_controller()
3198 status = spi_controller_initialize_queue(ctlr); in spi_register_controller()
3200 device_del(&ctlr->dev); in spi_register_controller()
3205 ctlr->pcpu_statistics = spi_alloc_pcpu_stats(dev); in spi_register_controller()
3206 if (!ctlr->pcpu_statistics) { in spi_register_controller()
3213 list_add_tail(&ctlr->list, &spi_controller_list); in spi_register_controller()
3215 spi_match_controller_to_boardinfo(ctlr, &bi->board_info); in spi_register_controller()
3219 of_register_spi_devices(ctlr); in spi_register_controller()
3220 acpi_register_spi_devices(ctlr); in spi_register_controller()
3224 spi_destroy_queue(ctlr); in spi_register_controller()
3227 idr_remove(&spi_master_idr, ctlr->bus_num); in spi_register_controller()
3252 struct spi_controller *ctlr) in devm_spi_register_controller() argument
3261 ret = spi_register_controller(ctlr); in devm_spi_register_controller()
3263 *ptr = ctlr; in devm_spi_register_controller()
3291 void spi_unregister_controller(struct spi_controller *ctlr) in spi_unregister_controller() argument
3294 int id = ctlr->bus_num; in spi_unregister_controller()
3298 mutex_lock(&ctlr->add_lock); in spi_unregister_controller()
3300 device_for_each_child(&ctlr->dev, NULL, __unregister); in spi_unregister_controller()
3306 if (ctlr->queued) { in spi_unregister_controller()
3307 if (spi_destroy_queue(ctlr)) in spi_unregister_controller()
3308 dev_err(&ctlr->dev, "queue remove failed\n"); in spi_unregister_controller()
3311 list_del(&ctlr->list); in spi_unregister_controller()
3314 device_del(&ctlr->dev); in spi_unregister_controller()
3318 if (found == ctlr) in spi_unregister_controller()
3323 mutex_unlock(&ctlr->add_lock); in spi_unregister_controller()
3329 if (!ctlr->devm_allocated) in spi_unregister_controller()
3330 put_device(&ctlr->dev); in spi_unregister_controller()
3334 static inline int __spi_check_suspended(const struct spi_controller *ctlr) in __spi_check_suspended() argument
3336 return ctlr->flags & SPI_CONTROLLER_SUSPENDED ? -ESHUTDOWN : 0; in __spi_check_suspended()
3339 static inline void __spi_mark_suspended(struct spi_controller *ctlr) in __spi_mark_suspended() argument
3341 mutex_lock(&ctlr->bus_lock_mutex); in __spi_mark_suspended()
3342 ctlr->flags |= SPI_CONTROLLER_SUSPENDED; in __spi_mark_suspended()
3343 mutex_unlock(&ctlr->bus_lock_mutex); in __spi_mark_suspended()
3346 static inline void __spi_mark_resumed(struct spi_controller *ctlr) in __spi_mark_resumed() argument
3348 mutex_lock(&ctlr->bus_lock_mutex); in __spi_mark_resumed()
3349 ctlr->flags &= ~SPI_CONTROLLER_SUSPENDED; in __spi_mark_resumed()
3350 mutex_unlock(&ctlr->bus_lock_mutex); in __spi_mark_resumed()
3353 int spi_controller_suspend(struct spi_controller *ctlr) in spi_controller_suspend() argument
3358 if (ctlr->queued) { in spi_controller_suspend()
3359 ret = spi_stop_queue(ctlr); in spi_controller_suspend()
3361 dev_err(&ctlr->dev, "queue stop failed\n"); in spi_controller_suspend()
3364 __spi_mark_suspended(ctlr); in spi_controller_suspend()
3369 int spi_controller_resume(struct spi_controller *ctlr) in spi_controller_resume() argument
3373 __spi_mark_resumed(ctlr); in spi_controller_resume()
3375 if (ctlr->queued) { in spi_controller_resume()
3376 ret = spi_start_queue(ctlr); in spi_controller_resume()
3378 dev_err(&ctlr->dev, "queue restart failed\n"); in spi_controller_resume()
3388 static void __spi_replace_transfers_release(struct spi_controller *ctlr, in __spi_replace_transfers_release() argument
3397 rxfer->release(ctlr, msg, res); in __spi_replace_transfers_release()
3519 static int __spi_split_transfer_maxsize(struct spi_controller *ctlr, in __spi_split_transfer_maxsize() argument
3579 SPI_STATISTICS_INCREMENT_FIELD(ctlr->pcpu_statistics, in __spi_split_transfer_maxsize()
3598 int spi_split_transfers_maxsize(struct spi_controller *ctlr, in spi_split_transfers_maxsize() argument
3615 ret = __spi_split_transfer_maxsize(ctlr, msg, &xfer, in spi_split_transfers_maxsize()
3638 int spi_split_transfers_maxwords(struct spi_controller *ctlr, in spi_split_transfers_maxwords() argument
3658 ret = __spi_split_transfer_maxsize(ctlr, msg, &xfer, in spi_split_transfers_maxwords()
3676 static int __spi_validate_bits_per_word(struct spi_controller *ctlr, in __spi_validate_bits_per_word() argument
3679 if (ctlr->bits_per_word_mask) { in __spi_validate_bits_per_word()
3683 if (!(ctlr->bits_per_word_mask & SPI_BPW_MASK(bits_per_word))) in __spi_validate_bits_per_word()
3891 struct spi_controller *ctlr = spi->controller; in __spi_validate() local
3905 if ((spi->mode & SPI_CS_WORD) && (!(ctlr->mode_bits & SPI_CS_WORD) || in __spi_validate()
3913 ret = spi_split_transfers_maxsize(ctlr, message, maxsize, in __spi_validate()
3932 if ((ctlr->flags & SPI_CONTROLLER_HALF_DUPLEX) || in __spi_validate()
3934 unsigned flags = ctlr->flags; in __spi_validate()
3964 if (ctlr->max_speed_hz && xfer->speed_hz > ctlr->max_speed_hz) in __spi_validate()
3965 xfer->speed_hz = ctlr->max_speed_hz; in __spi_validate()
3967 if (__spi_validate_bits_per_word(ctlr, xfer->bits_per_word)) in __spi_validate()
3985 if (xfer->speed_hz && ctlr->min_speed_hz && in __spi_validate()
3986 xfer->speed_hz < ctlr->min_speed_hz) in __spi_validate()
4041 struct spi_controller *ctlr = spi->controller; in __spi_async() local
4048 if (!ctlr->transfer) in __spi_async()
4053 SPI_STATISTICS_INCREMENT_FIELD(ctlr->pcpu_statistics, spi_async); in __spi_async()
4058 if (!ctlr->ptp_sts_supported) { in __spi_async()
4065 return ctlr->transfer(spi, message); in __spi_async()
4101 struct spi_controller *ctlr = spi->controller; in spi_async() local
4109 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in spi_async()
4111 if (ctlr->bus_lock_flag) in spi_async()
4116 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in spi_async()
4155 struct spi_controller *ctlr = spi->controller; in spi_async_locked() local
4163 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in spi_async_locked()
4167 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in spi_async_locked()
4173 static void __spi_transfer_message_noqueue(struct spi_controller *ctlr, struct spi_message *msg) in __spi_transfer_message_noqueue() argument
4178 mutex_lock(&ctlr->io_mutex); in __spi_transfer_message_noqueue()
4180 was_busy = ctlr->busy; in __spi_transfer_message_noqueue()
4182 ctlr->cur_msg = msg; in __spi_transfer_message_noqueue()
4183 ret = __spi_pump_transfer_message(ctlr, msg, was_busy); in __spi_transfer_message_noqueue()
4185 dev_err(&ctlr->dev, "noqueue transfer failed\n"); in __spi_transfer_message_noqueue()
4186 ctlr->cur_msg = NULL; in __spi_transfer_message_noqueue()
4187 ctlr->fallback = false; in __spi_transfer_message_noqueue()
4190 kfree(ctlr->dummy_rx); in __spi_transfer_message_noqueue()
4191 ctlr->dummy_rx = NULL; in __spi_transfer_message_noqueue()
4192 kfree(ctlr->dummy_tx); in __spi_transfer_message_noqueue()
4193 ctlr->dummy_tx = NULL; in __spi_transfer_message_noqueue()
4194 if (ctlr->unprepare_transfer_hardware && in __spi_transfer_message_noqueue()
4195 ctlr->unprepare_transfer_hardware(ctlr)) in __spi_transfer_message_noqueue()
4196 dev_err(&ctlr->dev, in __spi_transfer_message_noqueue()
4198 spi_idle_runtime_pm(ctlr); in __spi_transfer_message_noqueue()
4201 mutex_unlock(&ctlr->io_mutex); in __spi_transfer_message_noqueue()
4221 struct spi_controller *ctlr = spi->controller; in __spi_sync() local
4223 if (__spi_check_suspended(ctlr)) { in __spi_sync()
4234 SPI_STATISTICS_INCREMENT_FIELD(ctlr->pcpu_statistics, spi_sync); in __spi_sync()
4243 if (READ_ONCE(ctlr->queue_empty) && !ctlr->must_async) { in __spi_sync()
4249 SPI_STATISTICS_INCREMENT_FIELD(ctlr->pcpu_statistics, spi_sync_immediate); in __spi_sync()
4252 __spi_transfer_message_noqueue(ctlr, message); in __spi_sync()
4346 int spi_bus_lock(struct spi_controller *ctlr) in spi_bus_lock() argument
4350 mutex_lock(&ctlr->bus_lock_mutex); in spi_bus_lock()
4352 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in spi_bus_lock()
4353 ctlr->bus_lock_flag = 1; in spi_bus_lock()
4354 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in spi_bus_lock()
4375 int spi_bus_unlock(struct spi_controller *ctlr) in spi_bus_unlock() argument
4377 ctlr->bus_lock_flag = 0; in spi_bus_unlock()
4379 mutex_unlock(&ctlr->bus_lock_mutex); in spi_bus_unlock()
4495 struct spi_controller *ctlr; in of_spi_notify() local
4500 ctlr = of_find_spi_controller_by_node(rd->dn->parent); in of_spi_notify()
4501 if (ctlr == NULL) in of_spi_notify()
4505 put_device(&ctlr->dev); in of_spi_notify()
4514 spi = of_register_spi_device(ctlr, rd->dn); in of_spi_notify()
4515 put_device(&ctlr->dev); in of_spi_notify()
4586 struct spi_controller *ctlr; in acpi_spi_notify() local
4591 ctlr = acpi_spi_find_controller_by_adev(acpi_dev_parent(adev)); in acpi_spi_notify()
4592 if (!ctlr) in acpi_spi_notify()
4595 acpi_register_spi_device(ctlr, adev); in acpi_spi_notify()
4596 put_device(&ctlr->dev); in acpi_spi_notify()