Lines Matching +full:rtl8723bs +full:- +full:bt
1 // SPDX-License-Identifier: GPL-2.0-or-later
4 * Bluetooth HCI Three-wire UART driver
37 * Maximum Three-wire packet:
38 * 4 byte header + max value for 12-bit length + 2 bytes for CRC
42 /* Convenience macros for reading Three-wire header values */
127 struct h5 *h5 = hu->priv; in h5_link_control()
138 skb_queue_tail(&h5->unrel, nskb); in h5_link_control()
144 return h5->tx_win & 0x07; in h5_cfg_field()
152 struct hci_uart *hu = h5->hu; in h5_timed_event()
156 BT_DBG("%s", hu->hdev->name); in h5_timed_event()
158 if (h5->state == H5_UNINITIALIZED) in h5_timed_event()
161 if (h5->state == H5_INITIALIZED) { in h5_timed_event()
166 if (h5->state != H5_ACTIVE) { in h5_timed_event()
167 mod_timer(&h5->timer, jiffies + H5_SYNC_TIMEOUT); in h5_timed_event()
171 if (h5->sleep != H5_AWAKE) { in h5_timed_event()
172 h5->sleep = H5_SLEEPING; in h5_timed_event()
176 BT_DBG("hu %p retransmitting %u pkts", hu, h5->unack.qlen); in h5_timed_event()
178 spin_lock_irqsave_nested(&h5->unack.lock, flags, SINGLE_DEPTH_NESTING); in h5_timed_event()
180 while ((skb = __skb_dequeue_tail(&h5->unack)) != NULL) { in h5_timed_event()
181 h5->tx_seq = (h5->tx_seq - 1) & 0x07; in h5_timed_event()
182 skb_queue_head(&h5->rel, skb); in h5_timed_event()
185 spin_unlock_irqrestore(&h5->unack.lock, flags); in h5_timed_event()
193 struct h5 *h5 = hu->priv; in h5_peer_reset()
195 bt_dev_err(hu->hdev, "Peer device has reset"); in h5_peer_reset()
197 h5->state = H5_UNINITIALIZED; in h5_peer_reset()
199 del_timer(&h5->timer); in h5_peer_reset()
201 skb_queue_purge(&h5->rel); in h5_peer_reset()
202 skb_queue_purge(&h5->unrel); in h5_peer_reset()
203 skb_queue_purge(&h5->unack); in h5_peer_reset()
205 h5->tx_seq = 0; in h5_peer_reset()
206 h5->tx_ack = 0; in h5_peer_reset()
209 hci_reset_dev(hu->hdev); in h5_peer_reset()
219 if (hu->serdev) { in h5_open()
220 h5 = serdev_device_get_drvdata(hu->serdev); in h5_open()
224 return -ENOMEM; in h5_open()
227 hu->priv = h5; in h5_open()
228 h5->hu = hu; in h5_open()
230 skb_queue_head_init(&h5->unack); in h5_open()
231 skb_queue_head_init(&h5->rel); in h5_open()
232 skb_queue_head_init(&h5->unrel); in h5_open()
236 timer_setup(&h5->timer, h5_timed_event, 0); in h5_open()
238 h5->tx_win = H5_TX_WIN_MAX; in h5_open()
240 if (h5->vnd && h5->vnd->open) in h5_open()
241 h5->vnd->open(h5); in h5_open()
243 set_bit(HCI_UART_INIT_PENDING, &hu->hdev_flags); in h5_open()
247 mod_timer(&h5->timer, jiffies + H5_SYNC_TIMEOUT); in h5_open()
254 struct h5 *h5 = hu->priv; in h5_close()
256 del_timer_sync(&h5->timer); in h5_close()
258 skb_queue_purge(&h5->unack); in h5_close()
259 skb_queue_purge(&h5->rel); in h5_close()
260 skb_queue_purge(&h5->unrel); in h5_close()
262 kfree_skb(h5->rx_skb); in h5_close()
263 h5->rx_skb = NULL; in h5_close()
265 if (h5->vnd && h5->vnd->close) in h5_close()
266 h5->vnd->close(h5); in h5_close()
268 if (!hu->serdev) in h5_close()
276 struct h5 *h5 = hu->priv; in h5_setup()
278 if (h5->vnd && h5->vnd->setup) in h5_setup()
279 return h5->vnd->setup(h5); in h5_setup()
291 spin_lock_irqsave(&h5->unack.lock, flags); in h5_pkt_cull()
293 to_remove = skb_queue_len(&h5->unack); in h5_pkt_cull()
297 seq = h5->tx_seq; in h5_pkt_cull()
300 if (h5->rx_ack == seq) in h5_pkt_cull()
303 to_remove--; in h5_pkt_cull()
304 seq = (seq - 1) & 0x07; in h5_pkt_cull()
307 if (seq != h5->rx_ack) in h5_pkt_cull()
311 skb_queue_walk_safe(&h5->unack, skb, tmp) { in h5_pkt_cull()
315 __skb_unlink(skb, &h5->unack); in h5_pkt_cull()
319 if (skb_queue_empty(&h5->unack)) in h5_pkt_cull()
320 del_timer(&h5->timer); in h5_pkt_cull()
323 spin_unlock_irqrestore(&h5->unack.lock, flags); in h5_pkt_cull()
328 struct h5 *h5 = hu->priv; in h5_handle_internal_rx()
336 const unsigned char *hdr = h5->rx_skb->data; in h5_handle_internal_rx()
337 const unsigned char *data = &h5->rx_skb->data[4]; in h5_handle_internal_rx()
339 BT_DBG("%s", hu->hdev->name); in h5_handle_internal_rx()
350 if (h5->state == H5_ACTIVE) in h5_handle_internal_rx()
354 if (h5->state == H5_ACTIVE) in h5_handle_internal_rx()
356 h5->state = H5_INITIALIZED; in h5_handle_internal_rx()
363 h5->tx_win = (data[2] & 0x07); in h5_handle_internal_rx()
364 BT_DBG("Three-wire init complete. tx_win %u", h5->tx_win); in h5_handle_internal_rx()
365 h5->state = H5_ACTIVE; in h5_handle_internal_rx()
370 h5->sleep = H5_SLEEPING; in h5_handle_internal_rx()
374 h5->sleep = H5_AWAKE; in h5_handle_internal_rx()
378 h5->sleep = H5_AWAKE; in h5_handle_internal_rx()
389 struct h5 *h5 = hu->priv; in h5_complete_rx_pkt()
390 const unsigned char *hdr = h5->rx_skb->data; in h5_complete_rx_pkt()
393 h5->tx_ack = (h5->tx_ack + 1) % 8; in h5_complete_rx_pkt()
394 set_bit(H5_TX_ACK_REQ, &h5->flags); in h5_complete_rx_pkt()
398 h5->rx_ack = H5_HDR_ACK(hdr); in h5_complete_rx_pkt()
407 hci_skb_pkt_type(h5->rx_skb) = H5_HDR_PKT_TYPE(hdr); in h5_complete_rx_pkt()
409 /* Remove Three-wire header */ in h5_complete_rx_pkt()
410 skb_pull(h5->rx_skb, 4); in h5_complete_rx_pkt()
412 hci_recv_frame(hu->hdev, h5->rx_skb); in h5_complete_rx_pkt()
413 h5->rx_skb = NULL; in h5_complete_rx_pkt()
434 struct h5 *h5 = hu->priv; in h5_rx_payload()
435 const unsigned char *hdr = h5->rx_skb->data; in h5_rx_payload()
438 h5->rx_func = h5_rx_crc; in h5_rx_payload()
439 h5->rx_pending = 2; in h5_rx_payload()
449 struct h5 *h5 = hu->priv; in h5_rx_3wire_hdr()
450 const unsigned char *hdr = h5->rx_skb->data; in h5_rx_3wire_hdr()
453 hu->hdev->name, H5_HDR_SEQ(hdr), H5_HDR_ACK(hdr), in h5_rx_3wire_hdr()
458 bt_dev_err(hu->hdev, "Invalid header checksum"); in h5_rx_3wire_hdr()
463 if (H5_HDR_RELIABLE(hdr) && H5_HDR_SEQ(hdr) != h5->tx_ack) { in h5_rx_3wire_hdr()
464 bt_dev_err(hu->hdev, "Out-of-order packet arrived (%u != %u)", in h5_rx_3wire_hdr()
465 H5_HDR_SEQ(hdr), h5->tx_ack); in h5_rx_3wire_hdr()
466 set_bit(H5_TX_ACK_REQ, &h5->flags); in h5_rx_3wire_hdr()
472 if (h5->state != H5_ACTIVE && in h5_rx_3wire_hdr()
474 bt_dev_err(hu->hdev, "Non-link packet received in non-active state"); in h5_rx_3wire_hdr()
479 h5->rx_func = h5_rx_payload; in h5_rx_3wire_hdr()
480 h5->rx_pending = H5_HDR_LEN(hdr); in h5_rx_3wire_hdr()
487 struct h5 *h5 = hu->priv; in h5_rx_pkt_start()
492 h5->rx_func = h5_rx_3wire_hdr; in h5_rx_pkt_start()
493 h5->rx_pending = 4; in h5_rx_pkt_start()
495 h5->rx_skb = bt_skb_alloc(H5_MAX_LEN, GFP_ATOMIC); in h5_rx_pkt_start()
496 if (!h5->rx_skb) { in h5_rx_pkt_start()
497 bt_dev_err(hu->hdev, "Can't allocate mem for new packet"); in h5_rx_pkt_start()
499 return -ENOMEM; in h5_rx_pkt_start()
502 h5->rx_skb->dev = (void *)hu->hdev; in h5_rx_pkt_start()
509 struct h5 *h5 = hu->priv; in h5_rx_delimiter()
512 h5->rx_func = h5_rx_pkt_start; in h5_rx_delimiter()
522 if (!test_bit(H5_RX_ESC, &h5->flags) && c == SLIP_ESC) { in h5_unslip_one_byte()
523 set_bit(H5_RX_ESC, &h5->flags); in h5_unslip_one_byte()
527 if (test_and_clear_bit(H5_RX_ESC, &h5->flags)) { in h5_unslip_one_byte()
542 skb_put_data(h5->rx_skb, byte, 1); in h5_unslip_one_byte()
543 h5->rx_pending--; in h5_unslip_one_byte()
545 BT_DBG("unslipped 0x%02hhx, rx_pending %zu", *byte, h5->rx_pending); in h5_unslip_one_byte()
550 if (h5->rx_skb) { in h5_reset_rx()
551 kfree_skb(h5->rx_skb); in h5_reset_rx()
552 h5->rx_skb = NULL; in h5_reset_rx()
555 h5->rx_func = h5_rx_delimiter; in h5_reset_rx()
556 h5->rx_pending = 0; in h5_reset_rx()
557 clear_bit(H5_RX_ESC, &h5->flags); in h5_reset_rx()
562 struct h5 *h5 = hu->priv; in h5_recv()
565 BT_DBG("%s pending %zu count %d", hu->hdev->name, h5->rx_pending, in h5_recv()
571 if (h5->rx_pending > 0) { in h5_recv()
573 bt_dev_err(hu->hdev, "Too short H5 packet"); in h5_recv()
580 ptr++; count--; in h5_recv()
584 processed = h5->rx_func(hu, *ptr); in h5_recv()
589 count -= processed; in h5_recv()
592 if (hu->serdev) { in h5_recv()
593 pm_runtime_get(&hu->serdev->dev); in h5_recv()
594 pm_runtime_mark_last_busy(&hu->serdev->dev); in h5_recv()
595 pm_runtime_put_autosuspend(&hu->serdev->dev); in h5_recv()
603 struct h5 *h5 = hu->priv; in h5_enqueue()
605 if (skb->len > 0xfff) { in h5_enqueue()
606 bt_dev_err(hu->hdev, "Packet too long (%u bytes)", skb->len); in h5_enqueue()
611 if (h5->state != H5_ACTIVE) { in h5_enqueue()
612 bt_dev_err(hu->hdev, "Ignoring HCI data in non-active state"); in h5_enqueue()
620 skb_queue_tail(&h5->rel, skb); in h5_enqueue()
625 skb_queue_tail(&h5->unrel, skb); in h5_enqueue()
629 bt_dev_err(hu->hdev, "Unknown packet type %u", hci_skb_pkt_type(skb)); in h5_enqueue()
634 if (hu->serdev) { in h5_enqueue()
635 pm_runtime_get_sync(&hu->serdev->dev); in h5_enqueue()
636 pm_runtime_mark_last_busy(&hu->serdev->dev); in h5_enqueue()
637 pm_runtime_put_autosuspend(&hu->serdev->dev); in h5_enqueue()
685 struct h5 *h5 = hu->priv; in h5_prepare_pkt()
691 bt_dev_err(hu->hdev, "Unknown packet type %u", pkt_type); in h5_prepare_pkt()
709 hdr[0] = h5->tx_ack << 3; in h5_prepare_pkt()
710 clear_bit(H5_TX_ACK_REQ, &h5->flags); in h5_prepare_pkt()
715 hdr[0] |= h5->tx_seq; in h5_prepare_pkt()
716 h5->tx_seq = (h5->tx_seq + 1) % 8; in h5_prepare_pkt()
724 hu->hdev->name, H5_HDR_SEQ(hdr), H5_HDR_ACK(hdr), in h5_prepare_pkt()
741 struct h5 *h5 = hu->priv; in h5_dequeue()
745 if (h5->sleep != H5_AWAKE) { in h5_dequeue()
748 if (h5->sleep == H5_WAKING_UP) in h5_dequeue()
751 h5->sleep = H5_WAKING_UP; in h5_dequeue()
754 mod_timer(&h5->timer, jiffies + HZ / 100); in h5_dequeue()
758 skb = skb_dequeue(&h5->unrel); in h5_dequeue()
761 skb->data, skb->len); in h5_dequeue()
767 skb_queue_head(&h5->unrel, skb); in h5_dequeue()
768 bt_dev_err(hu->hdev, "Could not dequeue pkt because alloc_skb failed"); in h5_dequeue()
771 spin_lock_irqsave_nested(&h5->unack.lock, flags, SINGLE_DEPTH_NESTING); in h5_dequeue()
773 if (h5->unack.qlen >= h5->tx_win) in h5_dequeue()
776 skb = skb_dequeue(&h5->rel); in h5_dequeue()
779 skb->data, skb->len); in h5_dequeue()
781 __skb_queue_tail(&h5->unack, skb); in h5_dequeue()
782 mod_timer(&h5->timer, jiffies + H5_ACK_TIMEOUT); in h5_dequeue()
783 spin_unlock_irqrestore(&h5->unack.lock, flags); in h5_dequeue()
787 skb_queue_head(&h5->rel, skb); in h5_dequeue()
788 bt_dev_err(hu->hdev, "Could not dequeue pkt because alloc_skb failed"); in h5_dequeue()
792 spin_unlock_irqrestore(&h5->unack.lock, flags); in h5_dequeue()
794 if (test_bit(H5_TX_ACK_REQ, &h5->flags)) in h5_dequeue()
808 .name = "Three-wire (H5)",
820 struct device *dev = &serdev->dev; in h5_serdev_probe()
826 return -ENOMEM; in h5_serdev_probe()
828 h5->hu = &h5->serdev_hu; in h5_serdev_probe()
829 h5->serdev_hu.serdev = serdev; in h5_serdev_probe()
835 match = acpi_match_device(dev->driver->acpi_match_table, dev); in h5_serdev_probe()
837 return -ENODEV; in h5_serdev_probe()
839 data = (const struct h5_device_data *)match->driver_data; in h5_serdev_probe()
840 h5->vnd = data->vnd; in h5_serdev_probe()
841 h5->id = (char *)match->id; in h5_serdev_probe()
843 if (h5->vnd->acpi_gpio_map) in h5_serdev_probe()
845 h5->vnd->acpi_gpio_map); in h5_serdev_probe()
849 return -ENODEV; in h5_serdev_probe()
851 h5->vnd = data->vnd; in h5_serdev_probe()
854 if (data->driver_info & H5_INFO_WAKEUP_DISABLE) in h5_serdev_probe()
855 set_bit(H5_WAKEUP_DISABLE, &h5->flags); in h5_serdev_probe()
857 h5->enable_gpio = devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_LOW); in h5_serdev_probe()
858 if (IS_ERR(h5->enable_gpio)) in h5_serdev_probe()
859 return PTR_ERR(h5->enable_gpio); in h5_serdev_probe()
861 h5->device_wake_gpio = devm_gpiod_get_optional(dev, "device-wake", in h5_serdev_probe()
863 if (IS_ERR(h5->device_wake_gpio)) in h5_serdev_probe()
864 return PTR_ERR(h5->device_wake_gpio); in h5_serdev_probe()
866 return hci_uart_register_device(&h5->serdev_hu, &h5p); in h5_serdev_probe()
873 hci_uart_unregister_device(&h5->serdev_hu); in h5_serdev_remove()
881 if (h5->vnd && h5->vnd->suspend) in h5_serdev_suspend()
882 ret = h5->vnd->suspend(h5); in h5_serdev_suspend()
892 if (h5->vnd && h5->vnd->resume) in h5_serdev_resume()
893 ret = h5->vnd->resume(h5); in h5_serdev_resume()
909 btrtl_dev = btrtl_initialize(h5->hu->hdev, h5->id); in h5_btrtl_setup()
913 err = btrtl_get_uart_settings(h5->hu->hdev, btrtl_dev, in h5_btrtl_setup()
920 skb = __hci_cmd_sync(h5->hu->hdev, 0xfc17, sizeof(baudrate_data), in h5_btrtl_setup()
923 rtl_dev_err(h5->hu->hdev, "set baud rate command failed\n"); in h5_btrtl_setup()
932 serdev_device_set_baudrate(h5->hu->serdev, controller_baudrate); in h5_btrtl_setup()
933 serdev_device_set_flow_control(h5->hu->serdev, flow_control); in h5_btrtl_setup()
936 set_bit(H5_HW_FLOW_CONTROL, &h5->flags); in h5_btrtl_setup()
938 err = btrtl_download_firmware(h5->hu->hdev, btrtl_dev); in h5_btrtl_setup()
939 /* Give the device some time before the hci-core sends it a reset */ in h5_btrtl_setup()
944 btrtl_set_quirks(h5->hu->hdev, btrtl_dev); in h5_btrtl_setup()
959 if (test_bit(H5_WAKEUP_DISABLE, &h5->flags)) in h5_btrtl_open()
960 set_bit(HCI_UART_NO_SUSPEND_NOTIFIER, &h5->hu->flags); in h5_btrtl_open()
963 serdev_device_set_flow_control(h5->hu->serdev, false); in h5_btrtl_open()
964 serdev_device_set_parity(h5->hu->serdev, SERDEV_PARITY_EVEN); in h5_btrtl_open()
965 serdev_device_set_baudrate(h5->hu->serdev, 115200); in h5_btrtl_open()
967 if (!test_bit(H5_WAKEUP_DISABLE, &h5->flags)) { in h5_btrtl_open()
968 pm_runtime_set_active(&h5->hu->serdev->dev); in h5_btrtl_open()
969 pm_runtime_use_autosuspend(&h5->hu->serdev->dev); in h5_btrtl_open()
970 pm_runtime_set_autosuspend_delay(&h5->hu->serdev->dev, in h5_btrtl_open()
972 pm_runtime_enable(&h5->hu->serdev->dev); in h5_btrtl_open()
976 gpiod_set_value_cansleep(h5->enable_gpio, 0); in h5_btrtl_open()
977 gpiod_set_value_cansleep(h5->device_wake_gpio, 0); in h5_btrtl_open()
981 gpiod_set_value_cansleep(h5->enable_gpio, 1); in h5_btrtl_open()
982 gpiod_set_value_cansleep(h5->device_wake_gpio, 1); in h5_btrtl_open()
988 if (!test_bit(H5_WAKEUP_DISABLE, &h5->flags)) in h5_btrtl_close()
989 pm_runtime_disable(&h5->hu->serdev->dev); in h5_btrtl_close()
991 gpiod_set_value_cansleep(h5->device_wake_gpio, 0); in h5_btrtl_close()
992 gpiod_set_value_cansleep(h5->enable_gpio, 0); in h5_btrtl_close()
995 /* Suspend/resume support. On many devices the RTL BT device loses power during
1003 serdev_device_set_flow_control(h5->hu->serdev, false); in h5_btrtl_suspend()
1004 gpiod_set_value_cansleep(h5->device_wake_gpio, 0); in h5_btrtl_suspend()
1006 if (test_bit(H5_WAKEUP_DISABLE, &h5->flags)) in h5_btrtl_suspend()
1007 gpiod_set_value_cansleep(h5->enable_gpio, 0); in h5_btrtl_suspend()
1023 ret = device_reprobe(reprobe->dev); in h5_btrtl_reprobe_worker()
1024 if (ret && ret != -EPROBE_DEFER) in h5_btrtl_reprobe_worker()
1025 dev_err(reprobe->dev, "Reprobe error %d\n", ret); in h5_btrtl_reprobe_worker()
1027 put_device(reprobe->dev); in h5_btrtl_reprobe_worker()
1034 if (test_bit(H5_WAKEUP_DISABLE, &h5->flags)) { in h5_btrtl_resume()
1039 return -ENOMEM; in h5_btrtl_resume()
1043 INIT_WORK(&reprobe->work, h5_btrtl_reprobe_worker); in h5_btrtl_resume()
1044 reprobe->dev = get_device(&h5->hu->serdev->dev); in h5_btrtl_resume()
1045 queue_work(system_long_wq, &reprobe->work); in h5_btrtl_resume()
1047 gpiod_set_value_cansleep(h5->device_wake_gpio, 1); in h5_btrtl_resume()
1049 if (test_bit(H5_HW_FLOW_CONTROL, &h5->flags)) in h5_btrtl_resume()
1050 serdev_device_set_flow_control(h5->hu->serdev, true); in h5_btrtl_resume()
1060 { "device-wake-gpios", &btrtl_device_wake_gpios, 1 },
1061 { "enable-gpios", &btrtl_enable_gpios, 1 },
1062 { "host-wake-gpios", &btrtl_host_wake_gpios, 1 },
1103 { .compatible = "realtek,rtl8822cs-bt",
1105 { .compatible = "realtek,rtl8723bs-bt",
1107 { .compatible = "realtek,rtl8723cs-bt",
1109 { .compatible = "realtek,rtl8723ds-bt",