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2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771 
 kernel/drivers/bluetooth/btrtl.c
....@@ -1,18 +1,8 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  *  Bluetooth support for Realtek devices
34  *
45  *  Copyright (C) 2015 Endless Mobile, Inc.
5
- *
6
- *  This program is free software; you can redistribute it and/or modify
7
- *  it under the terms of the GNU General Public License as published by
8
- *  the Free Software Foundation; either version 2 of the License, or
9
- *  (at your option) any later version.
10
- *
11
- *  This program is distributed in the hope that it will be useful,
12
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14
- *  GNU General Public License for more details.
15
- *
166  */
177 
188 #include <linux/module.h>
....@@ -31,6 +21,7 @@
3121 #define RTL_ROM_LMP_3499	0x3499
3222 #define RTL_ROM_LMP_8723A	0x1200
3323 #define RTL_ROM_LMP_8723B	0x8723
24
+#define RTL_ROM_LMP_8723D	0x8873
3425 #define RTL_ROM_LMP_8821A	0x8821
3526 #define RTL_ROM_LMP_8761A	0x8761
3627 #define RTL_ROM_LMP_8822B	0x8822
....@@ -117,6 +108,13 @@
117108 	  .fw_name  = "rtl_bt/rtl8723ds_fw.bin",
118109 	  .cfg_name = "rtl_bt/rtl8723ds_config" },
119110 
111
+	/* 8723DU */
112
+	{ IC_INFO(RTL_ROM_LMP_8723D, 0x826C),
113
+	  .config_needed = true,
114
+	  .has_rom_version = true,
115
+	  .fw_name  = "rtl_bt/rtl8723d_fw.bin",
116
+	  .cfg_name = "rtl_bt/rtl8723d_config" },
117
+
120118 	/* 8821A */
121119 	{ IC_INFO(RTL_ROM_LMP_8821A, 0xa),
122120 	  .config_needed = false,
....@@ -132,11 +130,37 @@
132130 	  .cfg_name = "rtl_bt/rtl8821c_config" },
133131 
134132 	/* 8761A */
135
-	{ IC_MATCH_FL_LMPSUBV, RTL_ROM_LMP_8761A, 0x0,
133
+	{ IC_INFO(RTL_ROM_LMP_8761A, 0xa),
136134 	  .config_needed = false,
137135 	  .has_rom_version = true,
138136 	  .fw_name  = "rtl_bt/rtl8761a_fw.bin",
139137 	  .cfg_name = "rtl_bt/rtl8761a_config" },
138
+
139
+	/* 8761B */
140
+	{ IC_INFO(RTL_ROM_LMP_8761A, 0xb),
141
+	  .config_needed = false,
142
+	  .has_rom_version = true,
143
+	  .fw_name  = "rtl_bt/rtl8761b_fw.bin",
144
+	  .cfg_name = "rtl_bt/rtl8761b_config" },
145
+
146
+	/* 8822C with UART interface */
147
+	{ .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_HCIREV |
148
+			 IC_MATCH_FL_HCIBUS,
149
+	  .lmp_subver = RTL_ROM_LMP_8822B,
150
+	  .hci_rev = 0x000c,
151
+	  .hci_ver = 0x0a,
152
+	  .hci_bus = HCI_UART,
153
+	  .config_needed = true,
154
+	  .has_rom_version = true,
155
+	  .fw_name  = "rtl_bt/rtl8822cs_fw.bin",
156
+	  .cfg_name = "rtl_bt/rtl8822cs_config" },
157
+
158
+	/* 8822C with USB interface */
159
+	{ IC_INFO(RTL_ROM_LMP_8822B, 0xc),
160
+	  .config_needed = false,
161
+	  .has_rom_version = true,
162
+	  .fw_name  = "rtl_bt/rtl8822cu_fw.bin",
163
+	  .cfg_name = "rtl_bt/rtl8822cu_config" },
140164 
141165 	/* 8822B */
142166 	{ IC_INFO(RTL_ROM_LMP_8822B, 0xb),
....@@ -173,6 +197,27 @@
173197 	return &ic_id_table[i];
174198 }
175199 
200
+static struct sk_buff *btrtl_read_local_version(struct hci_dev *hdev)
201
+{
202
+	struct sk_buff *skb;
203
+
204
+	skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
205
+			     HCI_INIT_TIMEOUT);
206
+	if (IS_ERR(skb)) {
207
+		rtl_dev_err(hdev, "HCI_OP_READ_LOCAL_VERSION failed (%ld)",
208
+			    PTR_ERR(skb));
209
+		return skb;
210
+	}
211
+
212
+	if (skb->len != sizeof(struct hci_rp_read_local_version)) {
213
+		rtl_dev_err(hdev, "HCI_OP_READ_LOCAL_VERSION event length mismatch");
214
+		kfree_skb(skb);
215
+		return ERR_PTR(-EIO);
216
+	}
217
+
218
+	return skb;
219
+}
220
+
176221 static int rtl_read_rom_version(struct hci_dev *hdev, u8 *version)
177222 {
178223 	struct rtl_rom_version_evt *rom_version;
....@@ -181,19 +226,19 @@
181226 	/* Read RTL ROM version command */
182227 	skb = __hci_cmd_sync(hdev, 0xfc6d, 0, NULL, HCI_INIT_TIMEOUT);
183228 	if (IS_ERR(skb)) {
184
-		rtl_dev_err(hdev, "Read ROM version failed (%ld)\n",
229
+		rtl_dev_err(hdev, "Read ROM version failed (%ld)",
185230 			    PTR_ERR(skb));
186231 		return PTR_ERR(skb);
187232 	}
188233 
189234 	if (skb->len != sizeof(*rom_version)) {
190
-		rtl_dev_err(hdev, "RTL version event length mismatch\n");
235
+		rtl_dev_err(hdev, "version event length mismatch");
191236 		kfree_skb(skb);
192237 		return -EIO;
193238 	}
194239 
195240 	rom_version = (struct rtl_rom_version_evt *)skb->data;
196
-	rtl_dev_info(hdev, "rom_version status=%x version=%x\n",
241
+	rtl_dev_info(hdev, "rom_version status=%x version=%x",
197242 		     rom_version->status, rom_version->version);
198243 
199244 	*version = rom_version->version;
....@@ -206,7 +251,7 @@
206251 				struct btrtl_device_info *btrtl_dev,
207252 				unsigned char **_buf)
208253 {
209
-	const u8 extension_sig[] = { 0x51, 0x04, 0xfd, 0x77 };
254
+	static const u8 extension_sig[] = { 0x51, 0x04, 0xfd, 0x77 };
210255 	struct rtl_epatch_header *epatch_info;
211256 	unsigned char *buf;
212257 	int i, len;
....@@ -228,6 +273,8 @@
228273 		{ RTL_ROM_LMP_8822B, 8 },
229274 		{ RTL_ROM_LMP_8723B, 9 },	/* 8723D */
230275 		{ RTL_ROM_LMP_8821A, 10 },	/* 8821C */
276
+		{ RTL_ROM_LMP_8822B, 13 },	/* 8822C */
277
+		{ RTL_ROM_LMP_8761A, 14 },	/* 8761B */
231278 	};
232279 
233280 	min_size = sizeof(struct rtl_epatch_header) + sizeof(extension_sig) + 3;
....@@ -236,7 +283,7 @@
236283 
237284 	fwptr = btrtl_dev->fw_data + btrtl_dev->fw_len - sizeof(extension_sig);
238285 	if (memcmp(fwptr, extension_sig, sizeof(extension_sig)) != 0) {
239
-		rtl_dev_err(hdev, "extension section signature mismatch\n");
286
+		rtl_dev_err(hdev, "extension section signature mismatch");
240287 		return -EINVAL;
241288 	}
242289 
....@@ -257,7 +304,7 @@
257304 			break;
258305 
259306 		if (length == 0) {
260
-			rtl_dev_err(hdev, "found instruction with length 0\n");
307
+			rtl_dev_err(hdev, "found instruction with length 0");
261308 			return -EINVAL;
262309 		}
263310 
....@@ -270,7 +317,7 @@
270317 	}
271318 
272319 	if (project_id < 0) {
273
-		rtl_dev_err(hdev, "failed to find version instruction\n");
320
+		rtl_dev_err(hdev, "failed to find version instruction");
274321 		return -EINVAL;
275322 	}
276323 
....@@ -281,13 +328,13 @@
281328 	}
282329 
283330 	if (i >= ARRAY_SIZE(project_id_to_lmp_subver)) {
284
-		rtl_dev_err(hdev, "unknown project id %d\n", project_id);
331
+		rtl_dev_err(hdev, "unknown project id %d", project_id);
285332 		return -EINVAL;
286333 	}
287334 
288335 	if (btrtl_dev->ic_info->lmp_subver !=
289336 				project_id_to_lmp_subver[i].lmp_subver) {
290
-		rtl_dev_err(hdev, "firmware is for %x but this is a %x\n",
337
+		rtl_dev_err(hdev, "firmware is for %x but this is a %x",
291338 			    project_id_to_lmp_subver[i].lmp_subver,
292339 			    btrtl_dev->ic_info->lmp_subver);
293340 		return -EINVAL;
....@@ -295,7 +342,7 @@
295342 
296343 	epatch_info = (struct rtl_epatch_header *)btrtl_dev->fw_data;
297344 	if (memcmp(epatch_info->signature, RTL_EPATCH_SIGNATURE, 8) != 0) {
298
-		rtl_dev_err(hdev, "bad EPATCH signature\n");
345
+		rtl_dev_err(hdev, "bad EPATCH signature");
299346 		return -EINVAL;
300347 	}
301348 
....@@ -362,6 +409,8 @@
362409 	int frag_len = RTL_FRAG_LEN;
363410 	int ret = 0;
364411 	int i;
412
+	struct sk_buff *skb;
413
+	struct hci_rp_read_local_version *rp;
365414 
366415 	dl_cmd = kmalloc(sizeof(struct rtl_download_cmd), GFP_KERNEL);
367416 	if (!dl_cmd)
....@@ -372,7 +421,11 @@
372421 
373422 		BT_DBG("download fw (%d/%d)", i, frag_num);
374423 
375
-		dl_cmd->index = i;
424
+		if (i > 0x7f)
425
+			dl_cmd->index = (i & 0x7f) + 1;
426
+		else
427
+			dl_cmd->index = i;
428
+
376429 		if (i == (frag_num - 1)) {
377430 			dl_cmd->index |= 0x80; /* data end */
378431 			frag_len = fw_len % RTL_FRAG_LEN;
....@@ -383,14 +436,14 @@
383436 		skb = __hci_cmd_sync(hdev, 0xfc20, frag_len + 1, dl_cmd,
384437 				     HCI_INIT_TIMEOUT);
385438 		if (IS_ERR(skb)) {
386
-			rtl_dev_err(hdev, "download fw command failed (%ld)\n",
439
+			rtl_dev_err(hdev, "download fw command failed (%ld)",
387440 				    PTR_ERR(skb));
388
-			ret = -PTR_ERR(skb);
441
+			ret = PTR_ERR(skb);
389442 			goto out;
390443 		}
391444 
392445 		if (skb->len != sizeof(struct rtl_download_response)) {
393
-			rtl_dev_err(hdev, "download fw event length mismatch\n");
446
+			rtl_dev_err(hdev, "download fw event length mismatch");
394447 			kfree_skb(skb);
395448 			ret = -EIO;
396449 			goto out;
....@@ -399,6 +452,18 @@
399452 		kfree_skb(skb);
400453 		data += RTL_FRAG_LEN;
401454 	}
455
+
456
+	skb = btrtl_read_local_version(hdev);
457
+	if (IS_ERR(skb)) {
458
+		ret = PTR_ERR(skb);
459
+		rtl_dev_err(hdev, "read local version failed");
460
+		goto out;
461
+	}
462
+
463
+	rp = (struct hci_rp_read_local_version *)skb->data;
464
+	rtl_dev_info(hdev, "fw version 0x%04x%04x",
465
+		     __le16_to_cpu(rp->hci_rev), __le16_to_cpu(rp->lmp_subver));
466
+	kfree_skb(skb);
402467 
403468 out:
404469 	kfree(dl_cmd);
....@@ -410,7 +475,7 @@
410475 	const struct firmware *fw;
411476 	int ret;
412477 
413
-	rtl_dev_info(hdev, "rtl: loading %s\n", name);
478
+	rtl_dev_info(hdev, "loading %s", name);
414479 	ret = request_firmware(&fw, name, &hdev->dev);
415480 	if (ret < 0)
416481 		return ret;
....@@ -436,7 +501,7 @@
436501 	 * (which is only for RTL8723B and newer).
437502 	 */
438503 	if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE, 8)) {
439
-		rtl_dev_err(hdev, "unexpected EPATCH signature!\n");
504
+		rtl_dev_err(hdev, "unexpected EPATCH signature!");
440505 		return -EINVAL;
441506 	}
442507 
....@@ -471,34 +536,13 @@
471536 		fw_data = tbuff;
472537 	}
473538 
474
-	rtl_dev_info(hdev, "cfg_sz %d, total sz %d\n", btrtl_dev->cfg_len, ret);
539
+	rtl_dev_info(hdev, "cfg_sz %d, total sz %d", btrtl_dev->cfg_len, ret);
475540 
476541 	ret = rtl_download_firmware(hdev, fw_data, ret);
477542 
478543 out:
479544 	kvfree(fw_data);
480545 	return ret;
481
-}
482
-
483
-static struct sk_buff *btrtl_read_local_version(struct hci_dev *hdev)
484
-{
485
-	struct sk_buff *skb;
486
-
487
-	skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
488
-			     HCI_INIT_TIMEOUT);
489
-	if (IS_ERR(skb)) {
490
-		rtl_dev_err(hdev, "HCI_OP_READ_LOCAL_VERSION failed (%ld)\n",
491
-			    PTR_ERR(skb));
492
-		return skb;
493
-	}
494
-
495
-	if (skb->len != sizeof(struct hci_rp_read_local_version)) {
496
-		rtl_dev_err(hdev, "HCI_OP_READ_LOCAL_VERSION event length mismatch\n");
497
-		kfree_skb(skb);
498
-		return ERR_PTR(-EIO);
499
-	}
500
-
501
-	return skb;
502546 }
503547 
504548 void btrtl_free(struct btrtl_device_info *btrtl_dev)
....@@ -533,7 +577,7 @@
533577 	}
534578 
535579 	resp = (struct hci_rp_read_local_version *)skb->data;
536
-	rtl_dev_info(hdev, "rtl: examining hci_ver=%02x hci_rev=%04x lmp_ver=%02x lmp_subver=%04x\n",
580
+	rtl_dev_info(hdev, "examining hci_ver=%02x hci_rev=%04x lmp_ver=%02x lmp_subver=%04x",
537581 		     resp->hci_ver, resp->hci_rev,
538582 		     resp->lmp_ver, resp->lmp_subver);
539583 
....@@ -546,7 +590,7 @@
546590 					    hdev->bus);
547591 
548592 	if (!btrtl_dev->ic_info) {
549
-		rtl_dev_info(hdev, "rtl: unknown IC info, lmp subver %04x, hci rev %04x, hci ver %04x",
593
+		rtl_dev_info(hdev, "unknown IC info, lmp subver %04x, hci rev %04x, hci ver %04x",
550594 			    lmp_subver, hci_rev, hci_ver);
551595 		return btrtl_dev;
552596 	}
....@@ -560,7 +604,7 @@
560604 	btrtl_dev->fw_len = rtl_load_file(hdev, btrtl_dev->ic_info->fw_name,
561605 					  &btrtl_dev->fw_data);
562606 	if (btrtl_dev->fw_len < 0) {
563
-		rtl_dev_err(hdev, "firmware file %s not found\n",
607
+		rtl_dev_err(hdev, "firmware file %s not found",
564608 			    btrtl_dev->ic_info->fw_name);
565609 		ret = btrtl_dev->fw_len;
566610 		goto err_free;
....@@ -578,7 +622,7 @@
578622 						   &btrtl_dev->cfg_data);
579623 		if (btrtl_dev->ic_info->config_needed &&
580624 		    btrtl_dev->cfg_len <= 0) {
581
-			rtl_dev_err(hdev, "mandatory config file %s not found\n",
625
+			rtl_dev_err(hdev, "mandatory config file %s not found",
582626 				    btrtl_dev->ic_info->cfg_name);
583627 			ret = btrtl_dev->cfg_len;
584628 			goto err_free;
....@@ -604,7 +648,7 @@
604648 	 * to a different value.
605649 	 */
606650 	if (!btrtl_dev->ic_info) {
607
-		rtl_dev_info(hdev, "rtl: assuming no firmware upload needed\n");
651
+		rtl_dev_info(hdev, "assuming no firmware upload needed");
608652 		return 0;
609653 	}
610654 
....@@ -618,7 +662,7 @@
618662 	case RTL_ROM_LMP_8822B:
619663 		return btrtl_setup_rtl8723b(hdev, btrtl_dev);
620664 	default:
621
-		rtl_dev_info(hdev, "rtl: assuming no firmware upload needed\n");
665
+		rtl_dev_info(hdev, "assuming no firmware upload needed");
622666 		return 0;
623667 	}
624668 }
....@@ -636,6 +680,11 @@
636680 	ret = btrtl_download_firmware(hdev, btrtl_dev);
637681 
638682 	btrtl_free(btrtl_dev);
683
+
684
+	/* Enable controller to do both LE scan and BR/EDR inquiry
685
+	 * simultaneously.
686
+	 */
687
+	set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
639688 
640689 	return ret;
641690 }
....@@ -710,18 +759,18 @@
710759 
711760 	total_data_len = btrtl_dev->cfg_len - sizeof(*config);
712761 	if (total_data_len <= 0) {
713
-		rtl_dev_warn(hdev, "no config loaded\n");
762
+		rtl_dev_warn(hdev, "no config loaded");
714763 		return -EINVAL;
715764 	}
716765 
717766 	config = (struct rtl_vendor_config *)btrtl_dev->cfg_data;
718767 	if (le32_to_cpu(config->signature) != RTL_CONFIG_MAGIC) {
719
-		rtl_dev_err(hdev, "invalid config magic\n");
768
+		rtl_dev_err(hdev, "invalid config magic");
720769 		return -EINVAL;
721770 	}
722771 
723772 	if (total_data_len < le16_to_cpu(config->total_len)) {
724
-		rtl_dev_err(hdev, "config is too short\n");
773
+		rtl_dev_err(hdev, "config is too short");
725774 		return -EINVAL;
726775 	}
727776 
....@@ -731,7 +780,7 @@
731780 		switch (le16_to_cpu(entry->offset)) {
732781 		case 0xc:
733782 			if (entry->len < sizeof(*device_baudrate)) {
734
-				rtl_dev_err(hdev, "invalid UART config entry\n");
783
+				rtl_dev_err(hdev, "invalid UART config entry");
735784 				return -EINVAL;
736785 			}
737786 
....@@ -748,22 +797,22 @@
748797 			break;
749798 
750799 		default:
751
-			rtl_dev_dbg(hdev, "skipping config entry 0x%x (len %u)\n",
800
+			rtl_dev_dbg(hdev, "skipping config entry 0x%x (len %u)",
752801 				   le16_to_cpu(entry->offset), entry->len);
753802 			break;
754
-		};
803
+		}
755804 
756805 		i += sizeof(*entry) + entry->len;
757806 	}
758807 
759808 	if (!found) {
760
-		rtl_dev_err(hdev, "no UART config entry found\n");
809
+		rtl_dev_err(hdev, "no UART config entry found");
761810 		return -ENOENT;
762811 	}
763812 
764
-	rtl_dev_dbg(hdev, "device baudrate = 0x%08x\n", *device_baudrate);
765
-	rtl_dev_dbg(hdev, "controller baudrate = %u\n", *controller_baudrate);
766
-	rtl_dev_dbg(hdev, "flow control %d\n", *flow_control);
813
+	rtl_dev_dbg(hdev, "device baudrate = 0x%08x", *device_baudrate);
814
+	rtl_dev_dbg(hdev, "controller baudrate = %u", *controller_baudrate);
815
+	rtl_dev_dbg(hdev, "flow control %d", *flow_control);
767816 
768817 	return 0;
769818 }