Lines Matching refs:ctlr
144 struct spi_controller *ctlr = container_of(dev, \
146 return spi_statistics_##field##_show(ctlr->pcpu_statistics, buf); \
314 struct spi_controller *ctlr) in spi_statistics_add_transfer_stats() argument
331 (xfer->tx_buf != ctlr->dummy_tx)) in spi_statistics_add_transfer_stats()
334 (xfer->rx_buf != ctlr->dummy_rx)) in spi_statistics_add_transfer_stats()
554 struct spi_device *spi_alloc_device(struct spi_controller *ctlr) in spi_alloc_device() argument
558 if (!spi_controller_get(ctlr)) in spi_alloc_device()
563 spi_controller_put(ctlr); in spi_alloc_device()
570 spi_controller_put(ctlr); in spi_alloc_device()
574 spi->master = spi->controller = ctlr; in spi_alloc_device()
575 spi->dev.parent = &ctlr->dev; in spi_alloc_device()
578 spi->mode = ctlr->buswidth_override_bits; in spi_alloc_device()
617 struct spi_controller *ctlr = spi->controller; in __spi_add_device() local
618 struct device *dev = ctlr->dev.parent; in __spi_add_device()
635 !device_is_registered(&ctlr->dev)) { in __spi_add_device()
639 if (ctlr->cs_gpiods) in __spi_add_device()
640 spi->cs_gpiod = ctlr->cs_gpiods[spi->chip_select]; in __spi_add_device()
678 struct spi_controller *ctlr = spi->controller; in spi_add_device() local
679 struct device *dev = ctlr->dev.parent; in spi_add_device()
683 if (spi->chip_select >= ctlr->num_chipselect) { in spi_add_device()
685 ctlr->num_chipselect); in spi_add_device()
692 mutex_lock(&ctlr->add_lock); in spi_add_device()
694 mutex_unlock(&ctlr->add_lock); in spi_add_device()
701 struct spi_controller *ctlr = spi->controller; in spi_add_device_locked() local
702 struct device *dev = ctlr->dev.parent; in spi_add_device_locked()
705 if (spi->chip_select >= ctlr->num_chipselect) { in spi_add_device_locked()
707 ctlr->num_chipselect); in spi_add_device_locked()
714 WARN_ON(!mutex_is_locked(&ctlr->add_lock)); in spi_add_device_locked()
732 struct spi_device *spi_new_device(struct spi_controller *ctlr, in spi_new_device() argument
746 proxy = spi_alloc_device(ctlr); in spi_new_device()
764 dev_err(&ctlr->dev, "failed to add software node to '%s': %d\n", in spi_new_device()
808 static void spi_match_controller_to_boardinfo(struct spi_controller *ctlr, in spi_match_controller_to_boardinfo() argument
813 if (ctlr->bus_num != bi->bus_num) in spi_match_controller_to_boardinfo()
816 dev = spi_new_device(ctlr, bi); in spi_match_controller_to_boardinfo()
818 dev_err(ctlr->dev.parent, "can't create new device for %s\n", in spi_match_controller_to_boardinfo()
856 struct spi_controller *ctlr; in spi_register_board_info() local
862 list_for_each_entry(ctlr, &spi_controller_list, list) in spi_register_board_info()
863 spi_match_controller_to_boardinfo(ctlr, in spi_register_board_info()
937 static void spi_res_release(struct spi_controller *ctlr, struct spi_message *message) in spi_res_release() argument
943 res->release(ctlr, message, res->data); in spi_res_release()
1013 static int spi_map_buf_attrs(struct spi_controller *ctlr, struct device *dev, in spi_map_buf_attrs() argument
1038 desc_len = min_t(size_t, max_seg_size, ctlr->max_dma_len); in spi_map_buf_attrs()
1090 int spi_map_buf(struct spi_controller *ctlr, struct device *dev, in spi_map_buf() argument
1094 return spi_map_buf_attrs(ctlr, dev, sgt, buf, len, dir, 0); in spi_map_buf()
1097 static void spi_unmap_buf_attrs(struct spi_controller *ctlr, in spi_unmap_buf_attrs() argument
1110 void spi_unmap_buf(struct spi_controller *ctlr, struct device *dev, in spi_unmap_buf() argument
1113 spi_unmap_buf_attrs(ctlr, dev, sgt, dir, 0); in spi_unmap_buf()
1116 static int __spi_map_msg(struct spi_controller *ctlr, struct spi_message *msg) in __spi_map_msg() argument
1122 if (!ctlr->can_dma) in __spi_map_msg()
1125 if (ctlr->dma_tx) in __spi_map_msg()
1126 tx_dev = ctlr->dma_tx->device->dev; in __spi_map_msg()
1127 else if (ctlr->dma_map_dev) in __spi_map_msg()
1128 tx_dev = ctlr->dma_map_dev; in __spi_map_msg()
1130 tx_dev = ctlr->dev.parent; in __spi_map_msg()
1132 if (ctlr->dma_rx) in __spi_map_msg()
1133 rx_dev = ctlr->dma_rx->device->dev; in __spi_map_msg()
1134 else if (ctlr->dma_map_dev) in __spi_map_msg()
1135 rx_dev = ctlr->dma_map_dev; in __spi_map_msg()
1137 rx_dev = ctlr->dev.parent; in __spi_map_msg()
1143 if (!ctlr->can_dma(ctlr, msg->spi, xfer)) in __spi_map_msg()
1147 ret = spi_map_buf_attrs(ctlr, tx_dev, &xfer->tx_sg, in __spi_map_msg()
1156 ret = spi_map_buf_attrs(ctlr, rx_dev, &xfer->rx_sg, in __spi_map_msg()
1160 spi_unmap_buf_attrs(ctlr, tx_dev, in __spi_map_msg()
1169 ctlr->cur_rx_dma_dev = rx_dev; in __spi_map_msg()
1170 ctlr->cur_tx_dma_dev = tx_dev; in __spi_map_msg()
1171 ctlr->cur_msg_mapped = true; in __spi_map_msg()
1176 static int __spi_unmap_msg(struct spi_controller *ctlr, struct spi_message *msg) in __spi_unmap_msg() argument
1178 struct device *rx_dev = ctlr->cur_rx_dma_dev; in __spi_unmap_msg()
1179 struct device *tx_dev = ctlr->cur_tx_dma_dev; in __spi_unmap_msg()
1182 if (!ctlr->cur_msg_mapped || !ctlr->can_dma) in __spi_unmap_msg()
1189 if (!ctlr->can_dma(ctlr, msg->spi, xfer)) in __spi_unmap_msg()
1192 spi_unmap_buf_attrs(ctlr, rx_dev, &xfer->rx_sg, in __spi_unmap_msg()
1194 spi_unmap_buf_attrs(ctlr, tx_dev, &xfer->tx_sg, in __spi_unmap_msg()
1198 ctlr->cur_msg_mapped = false; in __spi_unmap_msg()
1203 static void spi_dma_sync_for_device(struct spi_controller *ctlr, in spi_dma_sync_for_device() argument
1206 struct device *rx_dev = ctlr->cur_rx_dma_dev; in spi_dma_sync_for_device()
1207 struct device *tx_dev = ctlr->cur_tx_dma_dev; in spi_dma_sync_for_device()
1209 if (!ctlr->cur_msg_mapped) in spi_dma_sync_for_device()
1218 static void spi_dma_sync_for_cpu(struct spi_controller *ctlr, in spi_dma_sync_for_cpu() argument
1221 struct device *rx_dev = ctlr->cur_rx_dma_dev; in spi_dma_sync_for_cpu()
1222 struct device *tx_dev = ctlr->cur_tx_dma_dev; in spi_dma_sync_for_cpu()
1224 if (!ctlr->cur_msg_mapped) in spi_dma_sync_for_cpu()
1233 static inline int __spi_map_msg(struct spi_controller *ctlr, in __spi_map_msg() argument
1239 static inline int __spi_unmap_msg(struct spi_controller *ctlr, in __spi_unmap_msg() argument
1256 static inline int spi_unmap_msg(struct spi_controller *ctlr, in spi_unmap_msg() argument
1266 if (xfer->tx_buf == ctlr->dummy_tx) in spi_unmap_msg()
1268 if (xfer->rx_buf == ctlr->dummy_rx) in spi_unmap_msg()
1272 return __spi_unmap_msg(ctlr, msg); in spi_unmap_msg()
1275 static int spi_map_msg(struct spi_controller *ctlr, struct spi_message *msg) in spi_map_msg() argument
1281 if ((ctlr->flags & (SPI_CONTROLLER_MUST_RX | SPI_CONTROLLER_MUST_TX)) in spi_map_msg()
1287 if ((ctlr->flags & SPI_CONTROLLER_MUST_TX) && in spi_map_msg()
1290 if ((ctlr->flags & SPI_CONTROLLER_MUST_RX) && in spi_map_msg()
1296 tmp = krealloc(ctlr->dummy_tx, max_tx, in spi_map_msg()
1300 ctlr->dummy_tx = tmp; in spi_map_msg()
1304 tmp = krealloc(ctlr->dummy_rx, max_rx, in spi_map_msg()
1308 ctlr->dummy_rx = tmp; in spi_map_msg()
1317 xfer->tx_buf = ctlr->dummy_tx; in spi_map_msg()
1319 xfer->rx_buf = ctlr->dummy_rx; in spi_map_msg()
1324 return __spi_map_msg(ctlr, msg); in spi_map_msg()
1327 static int spi_transfer_wait(struct spi_controller *ctlr, in spi_transfer_wait() argument
1331 struct spi_statistics __percpu *statm = ctlr->pcpu_statistics; in spi_transfer_wait()
1336 if (spi_controller_is_slave(ctlr)) { in spi_transfer_wait()
1337 if (wait_for_completion_interruptible(&ctlr->xfer_completion)) { in spi_transfer_wait()
1362 ms = wait_for_completion_timeout(&ctlr->xfer_completion, in spi_transfer_wait()
1482 static int spi_transfer_one_message(struct spi_controller *ctlr, in spi_transfer_one_message() argument
1488 struct spi_statistics __percpu *statm = ctlr->pcpu_statistics; in spi_transfer_one_message()
1500 spi_statistics_add_transfer_stats(statm, xfer, ctlr); in spi_transfer_one_message()
1501 spi_statistics_add_transfer_stats(stats, xfer, ctlr); in spi_transfer_one_message()
1503 if (!ctlr->ptp_sts_supported) { in spi_transfer_one_message()
1509 reinit_completion(&ctlr->xfer_completion); in spi_transfer_one_message()
1512 spi_dma_sync_for_device(ctlr, xfer); in spi_transfer_one_message()
1513 ret = ctlr->transfer_one(ctlr, msg->spi, xfer); in spi_transfer_one_message()
1515 spi_dma_sync_for_cpu(ctlr, xfer); in spi_transfer_one_message()
1517 if (ctlr->cur_msg_mapped && in spi_transfer_one_message()
1519 __spi_unmap_msg(ctlr, msg); in spi_transfer_one_message()
1520 ctlr->fallback = true; in spi_transfer_one_message()
1535 ret = spi_transfer_wait(ctlr, msg, xfer); in spi_transfer_one_message()
1540 spi_dma_sync_for_cpu(ctlr, xfer); in spi_transfer_one_message()
1548 if (!ctlr->ptp_sts_supported) { in spi_transfer_one_message()
1586 if (msg->status && ctlr->handle_err) in spi_transfer_one_message()
1587 ctlr->handle_err(ctlr, msg); in spi_transfer_one_message()
1589 spi_finalize_current_message(ctlr); in spi_transfer_one_message()
1602 void spi_finalize_current_transfer(struct spi_controller *ctlr) in spi_finalize_current_transfer() argument
1604 complete(&ctlr->xfer_completion); in spi_finalize_current_transfer()
1608 static void spi_idle_runtime_pm(struct spi_controller *ctlr) in spi_idle_runtime_pm() argument
1610 if (ctlr->auto_runtime_pm) { in spi_idle_runtime_pm()
1611 pm_runtime_mark_last_busy(ctlr->dev.parent); in spi_idle_runtime_pm()
1612 pm_runtime_put_autosuspend(ctlr->dev.parent); in spi_idle_runtime_pm()
1616 static int __spi_pump_transfer_message(struct spi_controller *ctlr, in __spi_pump_transfer_message() argument
1622 if (!was_busy && ctlr->auto_runtime_pm) { in __spi_pump_transfer_message()
1623 ret = pm_runtime_get_sync(ctlr->dev.parent); in __spi_pump_transfer_message()
1625 pm_runtime_put_noidle(ctlr->dev.parent); in __spi_pump_transfer_message()
1626 dev_err(&ctlr->dev, "Failed to power device: %d\n", in __spi_pump_transfer_message()
1633 trace_spi_controller_busy(ctlr); in __spi_pump_transfer_message()
1635 if (!was_busy && ctlr->prepare_transfer_hardware) { in __spi_pump_transfer_message()
1636 ret = ctlr->prepare_transfer_hardware(ctlr); in __spi_pump_transfer_message()
1638 dev_err(&ctlr->dev, in __spi_pump_transfer_message()
1642 if (ctlr->auto_runtime_pm) in __spi_pump_transfer_message()
1643 pm_runtime_put(ctlr->dev.parent); in __spi_pump_transfer_message()
1646 spi_finalize_current_message(ctlr); in __spi_pump_transfer_message()
1654 ret = spi_split_transfers_maxsize(ctlr, msg, in __spi_pump_transfer_message()
1659 spi_finalize_current_message(ctlr); in __spi_pump_transfer_message()
1663 if (ctlr->prepare_message) { in __spi_pump_transfer_message()
1664 ret = ctlr->prepare_message(ctlr, msg); in __spi_pump_transfer_message()
1666 dev_err(&ctlr->dev, "failed to prepare message: %d\n", in __spi_pump_transfer_message()
1669 spi_finalize_current_message(ctlr); in __spi_pump_transfer_message()
1675 ret = spi_map_msg(ctlr, msg); in __spi_pump_transfer_message()
1678 spi_finalize_current_message(ctlr); in __spi_pump_transfer_message()
1682 if (!ctlr->ptp_sts_supported && !ctlr->transfer_one) { in __spi_pump_transfer_message()
1702 WRITE_ONCE(ctlr->cur_msg_incomplete, true); in __spi_pump_transfer_message()
1703 WRITE_ONCE(ctlr->cur_msg_need_completion, false); in __spi_pump_transfer_message()
1704 reinit_completion(&ctlr->cur_msg_completion); in __spi_pump_transfer_message()
1707 ret = ctlr->transfer_one_message(ctlr, msg); in __spi_pump_transfer_message()
1709 dev_err(&ctlr->dev, in __spi_pump_transfer_message()
1714 WRITE_ONCE(ctlr->cur_msg_need_completion, true); in __spi_pump_transfer_message()
1716 if (READ_ONCE(ctlr->cur_msg_incomplete)) in __spi_pump_transfer_message()
1717 wait_for_completion(&ctlr->cur_msg_completion); in __spi_pump_transfer_message()
1735 static void __spi_pump_messages(struct spi_controller *ctlr, bool in_kthread) in __spi_pump_messages() argument
1743 mutex_lock(&ctlr->io_mutex); in __spi_pump_messages()
1746 spin_lock_irqsave(&ctlr->queue_lock, flags); in __spi_pump_messages()
1749 if (ctlr->cur_msg) in __spi_pump_messages()
1753 if (list_empty(&ctlr->queue) || !ctlr->running) { in __spi_pump_messages()
1754 if (!ctlr->busy) in __spi_pump_messages()
1759 if (!ctlr->dummy_rx && !ctlr->dummy_tx && in __spi_pump_messages()
1760 !ctlr->unprepare_transfer_hardware) { in __spi_pump_messages()
1761 spi_idle_runtime_pm(ctlr); in __spi_pump_messages()
1762 ctlr->busy = false; in __spi_pump_messages()
1763 ctlr->queue_empty = true; in __spi_pump_messages()
1764 trace_spi_controller_idle(ctlr); in __spi_pump_messages()
1766 kthread_queue_work(ctlr->kworker, in __spi_pump_messages()
1767 &ctlr->pump_messages); in __spi_pump_messages()
1772 ctlr->busy = false; in __spi_pump_messages()
1773 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1775 kfree(ctlr->dummy_rx); in __spi_pump_messages()
1776 ctlr->dummy_rx = NULL; in __spi_pump_messages()
1777 kfree(ctlr->dummy_tx); in __spi_pump_messages()
1778 ctlr->dummy_tx = NULL; in __spi_pump_messages()
1779 if (ctlr->unprepare_transfer_hardware && in __spi_pump_messages()
1780 ctlr->unprepare_transfer_hardware(ctlr)) in __spi_pump_messages()
1781 dev_err(&ctlr->dev, in __spi_pump_messages()
1783 spi_idle_runtime_pm(ctlr); in __spi_pump_messages()
1784 trace_spi_controller_idle(ctlr); in __spi_pump_messages()
1786 spin_lock_irqsave(&ctlr->queue_lock, flags); in __spi_pump_messages()
1787 ctlr->queue_empty = true; in __spi_pump_messages()
1792 msg = list_first_entry(&ctlr->queue, struct spi_message, queue); in __spi_pump_messages()
1793 ctlr->cur_msg = msg; in __spi_pump_messages()
1796 if (ctlr->busy) in __spi_pump_messages()
1799 ctlr->busy = true; in __spi_pump_messages()
1800 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1802 ret = __spi_pump_transfer_message(ctlr, msg, was_busy); in __spi_pump_messages()
1803 kthread_queue_work(ctlr->kworker, &ctlr->pump_messages); in __spi_pump_messages()
1805 ctlr->cur_msg = NULL; in __spi_pump_messages()
1806 ctlr->fallback = false; in __spi_pump_messages()
1808 mutex_unlock(&ctlr->io_mutex); in __spi_pump_messages()
1816 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_pump_messages()
1817 mutex_unlock(&ctlr->io_mutex); in __spi_pump_messages()
1826 struct spi_controller *ctlr = in spi_pump_messages() local
1829 __spi_pump_messages(ctlr, true); in spi_pump_messages()
1852 void spi_take_timestamp_pre(struct spi_controller *ctlr, in spi_take_timestamp_pre() argument
1869 local_irq_save(ctlr->irq_flags); in spi_take_timestamp_pre()
1889 void spi_take_timestamp_post(struct spi_controller *ctlr, in spi_take_timestamp_post() argument
1905 local_irq_restore(ctlr->irq_flags); in spi_take_timestamp_post()
1931 static void spi_set_thread_rt(struct spi_controller *ctlr) in spi_set_thread_rt() argument
1933 dev_info(&ctlr->dev, in spi_set_thread_rt()
1935 sched_set_fifo(ctlr->kworker->task); in spi_set_thread_rt()
1938 static int spi_init_queue(struct spi_controller *ctlr) in spi_init_queue() argument
1940 ctlr->running = false; in spi_init_queue()
1941 ctlr->busy = false; in spi_init_queue()
1942 ctlr->queue_empty = true; in spi_init_queue()
1944 ctlr->kworker = kthread_create_worker(0, dev_name(&ctlr->dev)); in spi_init_queue()
1945 if (IS_ERR(ctlr->kworker)) { in spi_init_queue()
1946 dev_err(&ctlr->dev, "failed to create message pump kworker\n"); in spi_init_queue()
1947 return PTR_ERR(ctlr->kworker); in spi_init_queue()
1950 kthread_init_work(&ctlr->pump_messages, spi_pump_messages); in spi_init_queue()
1959 if (ctlr->rt) in spi_init_queue()
1960 spi_set_thread_rt(ctlr); in spi_init_queue()
1975 struct spi_message *spi_get_next_queued_message(struct spi_controller *ctlr) in spi_get_next_queued_message() argument
1981 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_get_next_queued_message()
1982 next = list_first_entry_or_null(&ctlr->queue, struct spi_message, in spi_get_next_queued_message()
1984 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_get_next_queued_message()
1997 void spi_finalize_current_message(struct spi_controller *ctlr) in spi_finalize_current_message() argument
2003 mesg = ctlr->cur_msg; in spi_finalize_current_message()
2005 if (!ctlr->ptp_sts_supported && !ctlr->transfer_one) { in spi_finalize_current_message()
2012 if (unlikely(ctlr->ptp_sts_supported)) in spi_finalize_current_message()
2016 spi_unmap_msg(ctlr, mesg); in spi_finalize_current_message()
2025 spi_res_release(ctlr, mesg); in spi_finalize_current_message()
2027 if (mesg->prepared && ctlr->unprepare_message) { in spi_finalize_current_message()
2028 ret = ctlr->unprepare_message(ctlr, mesg); in spi_finalize_current_message()
2030 dev_err(&ctlr->dev, "failed to unprepare message: %d\n", in spi_finalize_current_message()
2037 WRITE_ONCE(ctlr->cur_msg_incomplete, false); in spi_finalize_current_message()
2039 if (READ_ONCE(ctlr->cur_msg_need_completion)) in spi_finalize_current_message()
2040 complete(&ctlr->cur_msg_completion); in spi_finalize_current_message()
2050 static int spi_start_queue(struct spi_controller *ctlr) in spi_start_queue() argument
2054 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_start_queue()
2056 if (ctlr->running || ctlr->busy) { in spi_start_queue()
2057 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_start_queue()
2061 ctlr->running = true; in spi_start_queue()
2062 ctlr->cur_msg = NULL; in spi_start_queue()
2063 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_start_queue()
2065 kthread_queue_work(ctlr->kworker, &ctlr->pump_messages); in spi_start_queue()
2070 static int spi_stop_queue(struct spi_controller *ctlr) in spi_stop_queue() argument
2076 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_stop_queue()
2084 while ((!list_empty(&ctlr->queue) || ctlr->busy) && limit--) { in spi_stop_queue()
2085 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_stop_queue()
2087 spin_lock_irqsave(&ctlr->queue_lock, flags); in spi_stop_queue()
2090 if (!list_empty(&ctlr->queue) || ctlr->busy) in spi_stop_queue()
2093 ctlr->running = false; in spi_stop_queue()
2095 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in spi_stop_queue()
2098 dev_warn(&ctlr->dev, "could not stop message queue\n"); in spi_stop_queue()
2104 static int spi_destroy_queue(struct spi_controller *ctlr) in spi_destroy_queue() argument
2108 ret = spi_stop_queue(ctlr); in spi_destroy_queue()
2117 dev_err(&ctlr->dev, "problem destroying queue\n"); in spi_destroy_queue()
2121 kthread_destroy_worker(ctlr->kworker); in spi_destroy_queue()
2130 struct spi_controller *ctlr = spi->controller; in __spi_queued_transfer() local
2133 spin_lock_irqsave(&ctlr->queue_lock, flags); in __spi_queued_transfer()
2135 if (!ctlr->running) { in __spi_queued_transfer()
2136 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_queued_transfer()
2142 list_add_tail(&msg->queue, &ctlr->queue); in __spi_queued_transfer()
2143 ctlr->queue_empty = false; in __spi_queued_transfer()
2144 if (!ctlr->busy && need_pump) in __spi_queued_transfer()
2145 kthread_queue_work(ctlr->kworker, &ctlr->pump_messages); in __spi_queued_transfer()
2147 spin_unlock_irqrestore(&ctlr->queue_lock, flags); in __spi_queued_transfer()
2163 static int spi_controller_initialize_queue(struct spi_controller *ctlr) in spi_controller_initialize_queue() argument
2167 ctlr->transfer = spi_queued_transfer; in spi_controller_initialize_queue()
2168 if (!ctlr->transfer_one_message) in spi_controller_initialize_queue()
2169 ctlr->transfer_one_message = spi_transfer_one_message; in spi_controller_initialize_queue()
2172 ret = spi_init_queue(ctlr); in spi_controller_initialize_queue()
2174 dev_err(&ctlr->dev, "problem initializing queue\n"); in spi_controller_initialize_queue()
2177 ctlr->queued = true; in spi_controller_initialize_queue()
2178 ret = spi_start_queue(ctlr); in spi_controller_initialize_queue()
2180 dev_err(&ctlr->dev, "problem starting queue\n"); in spi_controller_initialize_queue()
2187 spi_destroy_queue(ctlr); in spi_controller_initialize_queue()
2202 void spi_flush_queue(struct spi_controller *ctlr) in spi_flush_queue() argument
2204 if (ctlr->transfer == spi_queued_transfer) in spi_flush_queue()
2205 __spi_pump_messages(ctlr, false); in spi_flush_queue()
2211 static int of_spi_parse_dt(struct spi_controller *ctlr, struct spi_device *spi, in of_spi_parse_dt() argument
2247 dev_warn(&ctlr->dev, in of_spi_parse_dt()
2271 dev_warn(&ctlr->dev, in of_spi_parse_dt()
2278 if (spi_controller_is_slave(ctlr)) { in of_spi_parse_dt()
2280 dev_err(&ctlr->dev, "%pOF is not called 'slave'\n", in of_spi_parse_dt()
2290 dev_err(&ctlr->dev, "%pOF has no valid 'reg' property (%d)\n", in of_spi_parse_dt()
2304 of_register_spi_device(struct spi_controller *ctlr, struct device_node *nc) in of_register_spi_device() argument
2310 spi = spi_alloc_device(ctlr); in of_register_spi_device()
2312 dev_err(&ctlr->dev, "spi_device alloc error for %pOF\n", nc); in of_register_spi_device()
2321 dev_err(&ctlr->dev, "cannot find modalias for %pOF\n", nc); in of_register_spi_device()
2325 rc = of_spi_parse_dt(ctlr, spi, nc); in of_register_spi_device()
2337 dev_err(&ctlr->dev, "spi_device register error %pOF\n", nc); in of_register_spi_device()
2357 static void of_register_spi_devices(struct spi_controller *ctlr) in of_register_spi_devices() argument
2362 if (!ctlr->dev.of_node) in of_register_spi_devices()
2365 for_each_available_child_of_node(ctlr->dev.of_node, nc) { in of_register_spi_devices()
2368 spi = of_register_spi_device(ctlr, nc); in of_register_spi_devices()
2370 dev_warn(&ctlr->dev, in of_register_spi_devices()
2377 static void of_register_spi_devices(struct spi_controller *ctlr) { } in of_register_spi_devices() argument
2431 struct spi_controller *ctlr; member
2515 struct spi_controller *ctlr = lookup->ctlr; in acpi_spi_add_resource() local
2535 if (ctlr) { in acpi_spi_add_resource()
2536 if (ACPI_HANDLE(ctlr->dev.parent) != parent_handle) in acpi_spi_add_resource()
2545 ctlr = acpi_spi_find_controller_by_adev(adev); in acpi_spi_add_resource()
2546 if (!ctlr) in acpi_spi_add_resource()
2549 lookup->ctlr = ctlr; in acpi_spi_add_resource()
2559 if (ctlr->fw_translate_cs) { in acpi_spi_add_resource()
2560 int cs = ctlr->fw_translate_cs(ctlr, in acpi_spi_add_resource()
2606 struct spi_device *acpi_spi_device_alloc(struct spi_controller *ctlr, in acpi_spi_device_alloc() argument
2616 if (!ctlr && index == -1) in acpi_spi_device_alloc()
2619 lookup.ctlr = ctlr; in acpi_spi_device_alloc()
2635 ACPI_HANDLE(lookup.ctlr->dev.parent) == parent_handle) { in acpi_spi_device_alloc()
2643 spi = spi_alloc_device(lookup.ctlr); in acpi_spi_device_alloc()
2645 dev_err(&lookup.ctlr->dev, "failed to allocate SPI device for %s\n", in acpi_spi_device_alloc()
2661 static acpi_status acpi_register_spi_device(struct spi_controller *ctlr, in acpi_register_spi_device() argument
2670 spi = acpi_spi_device_alloc(ctlr, adev, -1); in acpi_register_spi_device()
2689 dev_err(&ctlr->dev, "failed to add SPI device %s from ACPI\n", in acpi_register_spi_device()
2701 struct spi_controller *ctlr = data; in acpi_spi_add_device() local
2706 return acpi_register_spi_device(ctlr, adev); in acpi_spi_add_device()
2711 static void acpi_register_spi_devices(struct spi_controller *ctlr) in acpi_register_spi_devices() argument
2716 handle = ACPI_HANDLE(ctlr->dev.parent); in acpi_register_spi_devices()
2722 acpi_spi_add_device, NULL, ctlr, NULL); in acpi_register_spi_devices()
2724 dev_warn(&ctlr->dev, "failed to enumerate SPI slaves\n"); in acpi_register_spi_devices()
2727 static inline void acpi_register_spi_devices(struct spi_controller *ctlr) {} in acpi_register_spi_devices() argument
2732 struct spi_controller *ctlr; in spi_controller_release() local
2734 ctlr = container_of(dev, struct spi_controller, dev); in spi_controller_release()
2735 kfree(ctlr); in spi_controller_release()
2753 struct spi_controller *ctlr = spi->controller; in spi_slave_abort() local
2755 if (spi_controller_is_slave(ctlr) && ctlr->slave_abort) in spi_slave_abort()
2756 return ctlr->slave_abort(ctlr); in spi_slave_abort()
2765 struct spi_controller *ctlr = container_of(dev, struct spi_controller, in slave_show() local
2769 child = device_find_any_child(&ctlr->dev); in slave_show()
2777 struct spi_controller *ctlr = container_of(dev, struct spi_controller, in slave_store() local
2788 child = device_find_any_child(&ctlr->dev); in slave_store()
2797 spi = spi_alloc_device(ctlr); in slave_store()
2868 struct spi_controller *ctlr; in __spi_alloc_controller() local
2869 size_t ctlr_size = ALIGN(sizeof(*ctlr), dma_get_cache_alignment()); in __spi_alloc_controller()
2874 ctlr = kzalloc(size + ctlr_size, GFP_KERNEL); in __spi_alloc_controller()
2875 if (!ctlr) in __spi_alloc_controller()
2878 device_initialize(&ctlr->dev); in __spi_alloc_controller()
2879 INIT_LIST_HEAD(&ctlr->queue); in __spi_alloc_controller()
2880 spin_lock_init(&ctlr->queue_lock); in __spi_alloc_controller()
2881 spin_lock_init(&ctlr->bus_lock_spinlock); in __spi_alloc_controller()
2882 mutex_init(&ctlr->bus_lock_mutex); in __spi_alloc_controller()
2883 mutex_init(&ctlr->io_mutex); in __spi_alloc_controller()
2884 mutex_init(&ctlr->add_lock); in __spi_alloc_controller()
2885 ctlr->bus_num = -1; in __spi_alloc_controller()
2886 ctlr->num_chipselect = 1; in __spi_alloc_controller()
2887 ctlr->slave = slave; in __spi_alloc_controller()
2889 ctlr->dev.class = &spi_slave_class; in __spi_alloc_controller()
2891 ctlr->dev.class = &spi_master_class; in __spi_alloc_controller()
2892 ctlr->dev.parent = dev; in __spi_alloc_controller()
2893 pm_suspend_ignore_children(&ctlr->dev, true); in __spi_alloc_controller()
2894 spi_controller_set_devdata(ctlr, (void *)ctlr + ctlr_size); in __spi_alloc_controller()
2896 return ctlr; in __spi_alloc_controller()
2900 static void devm_spi_release_controller(struct device *dev, void *ctlr) in devm_spi_release_controller() argument
2902 spi_controller_put(*(struct spi_controller **)ctlr); in devm_spi_release_controller()
2924 struct spi_controller **ptr, *ctlr; in __devm_spi_alloc_controller() local
2931 ctlr = __spi_alloc_controller(dev, size, slave); in __devm_spi_alloc_controller()
2932 if (ctlr) { in __devm_spi_alloc_controller()
2933 ctlr->devm_allocated = true; in __devm_spi_alloc_controller()
2934 *ptr = ctlr; in __devm_spi_alloc_controller()
2940 return ctlr; in __devm_spi_alloc_controller()
2948 static int spi_get_gpio_descs(struct spi_controller *ctlr) in spi_get_gpio_descs() argument
2952 struct device *dev = &ctlr->dev; in spi_get_gpio_descs()
2964 ctlr->num_chipselect = max_t(int, nb, ctlr->num_chipselect); in spi_get_gpio_descs()
2966 cs = devm_kcalloc(dev, ctlr->num_chipselect, sizeof(*cs), in spi_get_gpio_descs()
2970 ctlr->cs_gpiods = cs; in spi_get_gpio_descs()
3001 if (ctlr->max_native_cs && i >= ctlr->max_native_cs) { in spi_get_gpio_descs()
3008 ctlr->unused_native_cs = ffs(~native_cs_mask) - 1; in spi_get_gpio_descs()
3010 if ((ctlr->flags & SPI_MASTER_GPIO_SS) && num_cs_gpios && in spi_get_gpio_descs()
3011 ctlr->max_native_cs && ctlr->unused_native_cs >= ctlr->max_native_cs) { in spi_get_gpio_descs()
3019 static int spi_controller_check_ops(struct spi_controller *ctlr) in spi_controller_check_ops() argument
3028 if (ctlr->mem_ops) { in spi_controller_check_ops()
3029 if (!ctlr->mem_ops->exec_op) in spi_controller_check_ops()
3031 } else if (!ctlr->transfer && !ctlr->transfer_one && in spi_controller_check_ops()
3032 !ctlr->transfer_one_message) { in spi_controller_check_ops()
3062 int spi_register_controller(struct spi_controller *ctlr) in spi_register_controller() argument
3064 struct device *dev = ctlr->dev.parent; in spi_register_controller()
3076 status = spi_controller_check_ops(ctlr); in spi_register_controller()
3080 if (ctlr->bus_num >= 0) { in spi_register_controller()
3083 id = idr_alloc(&spi_master_idr, ctlr, ctlr->bus_num, in spi_register_controller()
3084 ctlr->bus_num + 1, GFP_KERNEL); in spi_register_controller()
3088 ctlr->bus_num = id; in spi_register_controller()
3089 } else if (ctlr->dev.of_node) { in spi_register_controller()
3091 id = of_alias_get_id(ctlr->dev.of_node, "spi"); in spi_register_controller()
3093 ctlr->bus_num = id; in spi_register_controller()
3095 id = idr_alloc(&spi_master_idr, ctlr, ctlr->bus_num, in spi_register_controller()
3096 ctlr->bus_num + 1, GFP_KERNEL); in spi_register_controller()
3102 if (ctlr->bus_num < 0) { in spi_register_controller()
3110 id = idr_alloc(&spi_master_idr, ctlr, first_dynamic, in spi_register_controller()
3115 ctlr->bus_num = id; in spi_register_controller()
3117 ctlr->bus_lock_flag = 0; in spi_register_controller()
3118 init_completion(&ctlr->xfer_completion); in spi_register_controller()
3119 init_completion(&ctlr->cur_msg_completion); in spi_register_controller()
3120 if (!ctlr->max_dma_len) in spi_register_controller()
3121 ctlr->max_dma_len = INT_MAX; in spi_register_controller()
3127 dev_set_name(&ctlr->dev, "spi%u", ctlr->bus_num); in spi_register_controller()
3129 if (!spi_controller_is_slave(ctlr) && ctlr->use_gpio_descriptors) { in spi_register_controller()
3130 status = spi_get_gpio_descs(ctlr); in spi_register_controller()
3137 ctlr->mode_bits |= SPI_CS_HIGH; in spi_register_controller()
3144 if (!ctlr->num_chipselect) { in spi_register_controller()
3150 ctlr->last_cs = -1; in spi_register_controller()
3152 status = device_add(&ctlr->dev); in spi_register_controller()
3156 spi_controller_is_slave(ctlr) ? "slave" : "master", in spi_register_controller()
3157 dev_name(&ctlr->dev)); in spi_register_controller()
3164 if (ctlr->transfer) { in spi_register_controller()
3166 } else if (ctlr->transfer_one || ctlr->transfer_one_message) { in spi_register_controller()
3167 status = spi_controller_initialize_queue(ctlr); in spi_register_controller()
3169 device_del(&ctlr->dev); in spi_register_controller()
3174 ctlr->pcpu_statistics = spi_alloc_pcpu_stats(dev); in spi_register_controller()
3175 if (!ctlr->pcpu_statistics) { in spi_register_controller()
3182 list_add_tail(&ctlr->list, &spi_controller_list); in spi_register_controller()
3184 spi_match_controller_to_boardinfo(ctlr, &bi->board_info); in spi_register_controller()
3188 of_register_spi_devices(ctlr); in spi_register_controller()
3189 acpi_register_spi_devices(ctlr); in spi_register_controller()
3193 spi_destroy_queue(ctlr); in spi_register_controller()
3196 idr_remove(&spi_master_idr, ctlr->bus_num); in spi_register_controller()
3221 struct spi_controller *ctlr) in devm_spi_register_controller() argument
3230 ret = spi_register_controller(ctlr); in devm_spi_register_controller()
3232 *ptr = ctlr; in devm_spi_register_controller()
3260 void spi_unregister_controller(struct spi_controller *ctlr) in spi_unregister_controller() argument
3263 int id = ctlr->bus_num; in spi_unregister_controller()
3267 mutex_lock(&ctlr->add_lock); in spi_unregister_controller()
3269 device_for_each_child(&ctlr->dev, NULL, __unregister); in spi_unregister_controller()
3275 if (ctlr->queued) { in spi_unregister_controller()
3276 if (spi_destroy_queue(ctlr)) in spi_unregister_controller()
3277 dev_err(&ctlr->dev, "queue remove failed\n"); in spi_unregister_controller()
3280 list_del(&ctlr->list); in spi_unregister_controller()
3283 device_del(&ctlr->dev); in spi_unregister_controller()
3287 if (found == ctlr) in spi_unregister_controller()
3292 mutex_unlock(&ctlr->add_lock); in spi_unregister_controller()
3297 if (!ctlr->devm_allocated) in spi_unregister_controller()
3298 put_device(&ctlr->dev); in spi_unregister_controller()
3302 int spi_controller_suspend(struct spi_controller *ctlr) in spi_controller_suspend() argument
3307 if (!ctlr->queued) in spi_controller_suspend()
3310 ret = spi_stop_queue(ctlr); in spi_controller_suspend()
3312 dev_err(&ctlr->dev, "queue stop failed\n"); in spi_controller_suspend()
3318 int spi_controller_resume(struct spi_controller *ctlr) in spi_controller_resume() argument
3322 if (!ctlr->queued) in spi_controller_resume()
3325 ret = spi_start_queue(ctlr); in spi_controller_resume()
3327 dev_err(&ctlr->dev, "queue restart failed\n"); in spi_controller_resume()
3337 static void __spi_replace_transfers_release(struct spi_controller *ctlr, in __spi_replace_transfers_release() argument
3346 rxfer->release(ctlr, msg, res); in __spi_replace_transfers_release()
3468 static int __spi_split_transfer_maxsize(struct spi_controller *ctlr, in __spi_split_transfer_maxsize() argument
3528 SPI_STATISTICS_INCREMENT_FIELD(ctlr->pcpu_statistics, in __spi_split_transfer_maxsize()
3547 int spi_split_transfers_maxsize(struct spi_controller *ctlr, in spi_split_transfers_maxsize() argument
3564 ret = __spi_split_transfer_maxsize(ctlr, msg, &xfer, in spi_split_transfers_maxsize()
3581 static int __spi_validate_bits_per_word(struct spi_controller *ctlr, in __spi_validate_bits_per_word() argument
3584 if (ctlr->bits_per_word_mask) { in __spi_validate_bits_per_word()
3588 if (!(ctlr->bits_per_word_mask & SPI_BPW_MASK(bits_per_word))) in __spi_validate_bits_per_word()
3759 struct spi_controller *ctlr = spi->controller; in __spi_validate() local
3773 if ((spi->mode & SPI_CS_WORD) && (!(ctlr->mode_bits & SPI_CS_WORD) || in __spi_validate()
3783 ret = spi_split_transfers_maxsize(ctlr, message, maxsize, in __spi_validate()
3802 if ((ctlr->flags & SPI_CONTROLLER_HALF_DUPLEX) || in __spi_validate()
3804 unsigned flags = ctlr->flags; in __spi_validate()
3834 if (ctlr->max_speed_hz && xfer->speed_hz > ctlr->max_speed_hz) in __spi_validate()
3835 xfer->speed_hz = ctlr->max_speed_hz; in __spi_validate()
3837 if (__spi_validate_bits_per_word(ctlr, xfer->bits_per_word)) in __spi_validate()
3855 if (xfer->speed_hz && ctlr->min_speed_hz && in __spi_validate()
3856 xfer->speed_hz < ctlr->min_speed_hz) in __spi_validate()
3909 struct spi_controller *ctlr = spi->controller; in __spi_async() local
3916 if (!ctlr->transfer) in __spi_async()
3921 SPI_STATISTICS_INCREMENT_FIELD(ctlr->pcpu_statistics, spi_async); in __spi_async()
3926 if (!ctlr->ptp_sts_supported) { in __spi_async()
3933 return ctlr->transfer(spi, message); in __spi_async()
3969 struct spi_controller *ctlr = spi->controller; in spi_async() local
3977 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in spi_async()
3979 if (ctlr->bus_lock_flag) in spi_async()
3984 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in spi_async()
4023 struct spi_controller *ctlr = spi->controller; in spi_async_locked() local
4031 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in spi_async_locked()
4035 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in spi_async_locked()
4041 static void __spi_transfer_message_noqueue(struct spi_controller *ctlr, struct spi_message *msg) in __spi_transfer_message_noqueue() argument
4046 mutex_lock(&ctlr->io_mutex); in __spi_transfer_message_noqueue()
4048 was_busy = ctlr->busy; in __spi_transfer_message_noqueue()
4050 ctlr->cur_msg = msg; in __spi_transfer_message_noqueue()
4051 ret = __spi_pump_transfer_message(ctlr, msg, was_busy); in __spi_transfer_message_noqueue()
4055 ctlr->cur_msg = NULL; in __spi_transfer_message_noqueue()
4056 ctlr->fallback = false; in __spi_transfer_message_noqueue()
4059 kfree(ctlr->dummy_rx); in __spi_transfer_message_noqueue()
4060 ctlr->dummy_rx = NULL; in __spi_transfer_message_noqueue()
4061 kfree(ctlr->dummy_tx); in __spi_transfer_message_noqueue()
4062 ctlr->dummy_tx = NULL; in __spi_transfer_message_noqueue()
4063 if (ctlr->unprepare_transfer_hardware && in __spi_transfer_message_noqueue()
4064 ctlr->unprepare_transfer_hardware(ctlr)) in __spi_transfer_message_noqueue()
4065 dev_err(&ctlr->dev, in __spi_transfer_message_noqueue()
4067 spi_idle_runtime_pm(ctlr); in __spi_transfer_message_noqueue()
4071 mutex_unlock(&ctlr->io_mutex); in __spi_transfer_message_noqueue()
4091 struct spi_controller *ctlr = spi->controller; in __spi_sync() local
4099 SPI_STATISTICS_INCREMENT_FIELD(ctlr->pcpu_statistics, spi_sync); in __spi_sync()
4108 if (READ_ONCE(ctlr->queue_empty) && !ctlr->must_async) { in __spi_sync()
4114 SPI_STATISTICS_INCREMENT_FIELD(ctlr->pcpu_statistics, spi_sync_immediate); in __spi_sync()
4117 __spi_transfer_message_noqueue(ctlr, message); in __spi_sync()
4210 int spi_bus_lock(struct spi_controller *ctlr) in spi_bus_lock() argument
4214 mutex_lock(&ctlr->bus_lock_mutex); in spi_bus_lock()
4216 spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags); in spi_bus_lock()
4217 ctlr->bus_lock_flag = 1; in spi_bus_lock()
4218 spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags); in spi_bus_lock()
4239 int spi_bus_unlock(struct spi_controller *ctlr) in spi_bus_unlock() argument
4241 ctlr->bus_lock_flag = 0; in spi_bus_unlock()
4243 mutex_unlock(&ctlr->bus_lock_mutex); in spi_bus_unlock()
4359 struct spi_controller *ctlr; in of_spi_notify() local
4364 ctlr = of_find_spi_controller_by_node(rd->dn->parent); in of_spi_notify()
4365 if (ctlr == NULL) in of_spi_notify()
4369 put_device(&ctlr->dev); in of_spi_notify()
4373 spi = of_register_spi_device(ctlr, rd->dn); in of_spi_notify()
4374 put_device(&ctlr->dev); in of_spi_notify()
4445 struct spi_controller *ctlr; in acpi_spi_notify() local
4450 ctlr = acpi_spi_find_controller_by_adev(acpi_dev_parent(adev)); in acpi_spi_notify()
4451 if (!ctlr) in acpi_spi_notify()
4454 acpi_register_spi_device(ctlr, adev); in acpi_spi_notify()
4455 put_device(&ctlr->dev); in acpi_spi_notify()