修改内核路径

hc

2024-05-14 bedbef8ad3e75a304af6361af235302bcc61d06b

 kernel/drivers/input/mouse/elan_i2c_smbus.c
..
..
@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
1
2
 /*
2
3
  * Elan I2C/SMBus Touchpad driver - SMBus interface
3
4
  *
..
..
@@ -8,10 +9,6 @@
8
9
  * Based on cyapa driver:
9
10
  * copyright (c) 2011-2012 Cypress Semiconductor, Inc.
10
11
  * copyright (c) 2011-2012 Google, Inc.
11
- *
12
- * This program is free software; you can redistribute it and/or modify it
13
- * under the terms of the GNU General Public License version 2 as published
14
- * by the Free Software Foundation.
15
12
  *
16
13
  * Trademarks are the property of their respective owners.
17
14
  */
..
..
@@ -48,6 +45,7 @@
48
45
 #define ETP_SMBUS_CALIBRATE_QUERY	0xC5
49
46
 
50
47
 #define ETP_SMBUS_REPORT_LEN		32
48
+#define ETP_SMBUS_REPORT_LEN2		7
51
49
 #define ETP_SMBUS_REPORT_OFFSET		2
52
50
 #define ETP_SMBUS_HELLOPACKET_LEN	5
53
51
 #define ETP_SMBUS_IAP_PASSWORD		0x1234
..
..
@@ -150,7 +148,7 @@
150
148
 }
151
149
 
152
150
 static int elan_smbus_get_version(struct i2c_client *client,
153
-				  bool iap, u8 *version)
151
+				  u8 pattern, bool iap, u8 *version)
154
152
 {
155
153
 	int error;
156
154
 	u8 val[I2C_SMBUS_BLOCK_MAX] = {0};
..
..
@@ -169,9 +167,8 @@
169
167
 	return 0;
170
168
 }
171
169
 
172
-static int elan_smbus_get_sm_version(struct i2c_client *client,
173
-				     u16 *ic_type, u8 *version,
174
-				     u8 *clickpad)
170
+static int elan_smbus_get_sm_version(struct i2c_client *client, u8 pattern,
171
+				     u16 *ic_type, u8 *version, u8 *clickpad)
175
172
 {
176
173
 	int error;
177
174
 	u8 val[I2C_SMBUS_BLOCK_MAX] = {0};
..
..
@@ -343,7 +340,8 @@
343
340
 	return 0;
344
341
 }
345
342
 
346
-static int elan_smbus_prepare_fw_update(struct i2c_client *client)
343
+static int elan_smbus_prepare_fw_update(struct i2c_client *client, u16 ic_type,
344
+					u8 iap_version, u16 fw_page_size)
347
345
 {
348
346
 	struct device *dev = &client->dev;
349
347
 	int len;
..
..
@@ -417,7 +415,7 @@
417
415
 }
418
416
 
419
417
 
420
-static int elan_smbus_write_fw_block(struct i2c_client *client,
418
+static int elan_smbus_write_fw_block(struct i2c_client *client, u16 fw_page_size,
421
419
 				     const u8 *page, u16 checksum, int idx)
422
420
 {
423
421
 	struct device *dev = &client->dev;
..
..
@@ -432,7 +430,7 @@
432
430
 	 */
433
431
 	error = i2c_smbus_write_block_data(client,
434
432
 					   ETP_SMBUS_WRITE_FW_BLOCK,
435
-					   ETP_FW_PAGE_SIZE / 2,
433
+					   fw_page_size / 2,
436
434
 					   page);
437
435
 	if (error) {
438
436
 		dev_err(dev, "Failed to write page %d (part %d): %d\n",
..
..
@@ -442,8 +440,8 @@
442
440
 
443
441
 	error = i2c_smbus_write_block_data(client,
444
442
 					   ETP_SMBUS_WRITE_FW_BLOCK,
445
-					   ETP_FW_PAGE_SIZE / 2,
446
-					   page + ETP_FW_PAGE_SIZE / 2);
443
+					   fw_page_size / 2,
444
+					   page + fw_page_size / 2);
447
445
 	if (error) {
448
446
 		dev_err(dev, "Failed to write page %d (part %d): %d\n",
449
447
 			idx, 2, error);
..
..
@@ -472,7 +470,21 @@
472
470
 	return 0;
473
471
 }
474
472
 
475
-static int elan_smbus_get_report(struct i2c_client *client, u8 *report)
473
+static int elan_smbus_get_report_features(struct i2c_client *client, u8 pattern,
474
+					  unsigned int *features,
475
+					  unsigned int *report_len)
476
+{
477
+	/*
478
+	 * SMBus controllers with pattern 2 lack area info, as newer
479
+	 * high-precision packets use that space for coordinates.
480
+	 */
481
+	*features = pattern <= 0x01 ? ETP_FEATURE_REPORT_MK : 0;
482
+	*report_len = ETP_SMBUS_REPORT_LEN;
483
+	return 0;
484
+}
485
+
486
+static int elan_smbus_get_report(struct i2c_client *client,
487
+				 u8 *report, unsigned int report_len)
476
488
 {
477
489
 	int len;
478
490
 
..
..
@@ -486,10 +498,13 @@
486
498
 		return len;
487
499
 	}
488
500
 
489
-	if (len != ETP_SMBUS_REPORT_LEN) {
501
+	if (report[ETP_REPORT_ID_OFFSET] == ETP_TP_REPORT_ID2)
502
+		report_len = ETP_SMBUS_REPORT_LEN2;
503
+
504
+	if (len != report_len) {
490
505
 		dev_err(&client->dev,
491
506
 			"wrong report length (%d vs %d expected)\n",
492
-			len, ETP_SMBUS_REPORT_LEN);
507
+			len, report_len);
493
508
 		return -EIO;
494
509
 	}
495
510
 
..
..
@@ -537,6 +552,7 @@
537
552
 	.write_fw_block		= elan_smbus_write_fw_block,
538
553
 	.finish_fw_update	= elan_smbus_finish_fw_update,
539
554
 
555
+	.get_report_features	= elan_smbus_get_report_features,
540
556
 	.get_report		= elan_smbus_get_report,
541
557
 	.get_pattern		= elan_smbus_get_pattern,
542
558
 };