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2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d 
 kernel/drivers/power/supply/bq24190_charger.c
....@@ -1,11 +1,8 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
12 /*
23  * Driver for the TI bq24190 battery charger.
34  *
45  * Author: Mark A. Greer <mgreer@animalcreek.com>
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 version 2 as
8
- * published by the Free Software Foundation.
96  */
107 
118 #include <linux/module.h>
....@@ -21,6 +18,7 @@
2118 #include <linux/workqueue.h>
2219 #include <linux/gpio.h>
2320 #include <linux/i2c.h>
21
+#include <linux/extcon-provider.h>
2422 
2523 #define	BQ24190_MANUFACTURER	"Texas Instruments"
2624 
....@@ -43,6 +41,7 @@
4341 #define BQ24190_REG_POC_CHG_CONFIG_DISABLE		0x0
4442 #define BQ24190_REG_POC_CHG_CONFIG_CHARGE		0x1
4543 #define BQ24190_REG_POC_CHG_CONFIG_OTG			0x2
44
+#define BQ24190_REG_POC_CHG_CONFIG_OTG_ALT		0x3
4645 #define BQ24190_REG_POC_SYS_MIN_MASK		(BIT(3) | BIT(2) | BIT(1))
4746 #define BQ24190_REG_POC_SYS_MIN_SHIFT		1
4847 #define BQ24190_REG_POC_SYS_MIN_MIN			3000
....@@ -142,7 +141,7 @@
142141 #define BQ24190_REG_VPRS_PN_MASK		(BIT(5) | BIT(4) | BIT(3))
143142 #define BQ24190_REG_VPRS_PN_SHIFT		3
144143 #define BQ24190_REG_VPRS_PN_24190			0x4
145
-#define BQ24190_REG_VPRS_PN_24192			0x5 /* Also 24193 */
144
+#define BQ24190_REG_VPRS_PN_24192			0x5 /* Also 24193, 24196 */
146145 #define BQ24190_REG_VPRS_PN_24192I			0x3
147146 #define BQ24190_REG_VPRS_TS_PROFILE_MASK	BIT(2)
148147 #define BQ24190_REG_VPRS_TS_PROFILE_SHIFT	2
....@@ -159,6 +158,7 @@
159158 struct bq24190_dev_info {
160159 	struct i2c_client		*client;
161160 	struct device			*dev;
161
+	struct extcon_dev		*edev;
162162 	struct power_supply		*charger;
163163 	struct power_supply		*battery;
164164 	struct delayed_work		input_current_limit_work;
....@@ -172,6 +172,11 @@
172172 	u8				f_reg;
173173 	u8				ss_reg;
174174 	u8				watchdog;
175
+};
176
+
177
+static const unsigned int bq24190_usb_extcon_cable[] = {
178
+	EXTCON_USB,
179
+	EXTCON_NONE,
175180 };
176181 
177182 /*
....@@ -402,9 +407,7 @@
402407 static struct attribute *
403408 	bq24190_sysfs_attrs[ARRAY_SIZE(bq24190_sysfs_field_tbl) + 1];
404409 
405
-static const struct attribute_group bq24190_sysfs_attr_group = {
406
-	.attrs = bq24190_sysfs_attrs,
407
-};
410
+ATTRIBUTE_GROUPS(bq24190_sysfs);
408411 
409412 static void bq24190_sysfs_init_attrs(void)
410413 {
....@@ -445,11 +448,9 @@
445448 	if (!info)
446449 		return -EINVAL;
447450 
448
-	ret = pm_runtime_get_sync(bdi->dev);
449
-	if (ret < 0) {
450
-		pm_runtime_put_noidle(bdi->dev);
451
+	ret = pm_runtime_resume_and_get(bdi->dev);
452
+	if (ret < 0)
451453 		return ret;
452
-	}
453454 
454455 	ret = bq24190_read_mask(bdi, info->reg, info->mask, info->shift, &v);
455456 	if (ret)
....@@ -480,7 +481,7 @@
480481 	if (ret < 0)
481482 		return ret;
482483 
483
-	ret = pm_runtime_get_sync(bdi->dev);
484
+	ret = pm_runtime_resume_and_get(bdi->dev);
484485 	if (ret < 0)
485486 		return ret;
486487 
....@@ -493,26 +494,6 @@
493494 
494495 	return count;
495496 }
496
-
497
-static int bq24190_sysfs_create_group(struct bq24190_dev_info *bdi)
498
-{
499
-	bq24190_sysfs_init_attrs();
500
-
501
-	return sysfs_create_group(&bdi->charger->dev.kobj,
502
-			&bq24190_sysfs_attr_group);
503
-}
504
-
505
-static void bq24190_sysfs_remove_group(struct bq24190_dev_info *bdi)
506
-{
507
-	sysfs_remove_group(&bdi->charger->dev.kobj, &bq24190_sysfs_attr_group);
508
-}
509
-#else
510
-static int bq24190_sysfs_create_group(struct bq24190_dev_info *bdi)
511
-{
512
-	return 0;
513
-}
514
-
515
-static inline void bq24190_sysfs_remove_group(struct bq24190_dev_info *bdi) {}
516497 #endif
517498 
518499 #ifdef CONFIG_REGULATOR
....@@ -521,10 +502,9 @@
521502 	struct bq24190_dev_info *bdi = rdev_get_drvdata(dev);
522503 	int ret;
523504 
524
-	ret = pm_runtime_get_sync(bdi->dev);
505
+	ret = pm_runtime_resume_and_get(bdi->dev);
525506 	if (ret < 0) {
526507 		dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", ret);
527
-		pm_runtime_put_noidle(bdi->dev);
528508 		return ret;
529509 	}
530510 
....@@ -554,10 +534,9 @@
554534 	int ret;
555535 	u8 val;
556536 
557
-	ret = pm_runtime_get_sync(bdi->dev);
537
+	ret = pm_runtime_resume_and_get(bdi->dev);
558538 	if (ret < 0) {
559539 		dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", ret);
560
-		pm_runtime_put_noidle(bdi->dev);
561540 		return ret;
562541 	}
563542 
....@@ -568,7 +547,11 @@
568547 	pm_runtime_mark_last_busy(bdi->dev);
569548 	pm_runtime_put_autosuspend(bdi->dev);
570549 
571
-	return ret ? ret : val == BQ24190_REG_POC_CHG_CONFIG_OTG;
550
+	if (ret)
551
+		return ret;
552
+
553
+	return (val == BQ24190_REG_POC_CHG_CONFIG_OTG ||
554
+		val == BQ24190_REG_POC_CHG_CONFIG_OTG_ALT);
572555 }
573556 
574557 static const struct regulator_ops bq24190_vbus_ops = {
....@@ -579,6 +562,7 @@
579562 
580563 static const struct regulator_desc bq24190_vbus_desc = {
581564 	.name = "usb_otg_vbus",
565
+	.of_match = "usb-otg-vbus",
582566 	.type = REGULATOR_VOLTAGE,
583567 	.owner = THIS_MODULE,
584568 	.ops = &bq24190_vbus_ops,
....@@ -692,7 +676,7 @@
692676 	 *   { .type = "bq24190", .addr = 0x6b, .properties = pe, .irq = irq };
693677 	 * struct i2c_adapter ad = { ... };
694678 	 * i2c_add_adapter(&ad);
695
-	 * i2c_new_device(&ad, &bi);
679
+	 * i2c_new_client_device(&ad, &bi);
696680 	 */
697681 	if (device_property_read_bool(bdi->dev, "disable-reset"))
698682 		return 0;
....@@ -1093,11 +1077,9 @@
10931077 
10941078 	dev_dbg(bdi->dev, "prop: %d\n", psp);
10951079 
1096
-	ret = pm_runtime_get_sync(bdi->dev);
1097
-	if (ret < 0) {
1098
-		pm_runtime_put_noidle(bdi->dev);
1080
+	ret = pm_runtime_resume_and_get(bdi->dev);
1081
+	if (ret < 0)
10991082 		return ret;
1100
-	}
11011083 
11021084 	switch (psp) {
11031085 	case POWER_SUPPLY_PROP_CHARGE_TYPE:
....@@ -1167,11 +1149,9 @@
11671149 
11681150 	dev_dbg(bdi->dev, "prop: %d\n", psp);
11691151 
1170
-	ret = pm_runtime_get_sync(bdi->dev);
1171
-	if (ret < 0) {
1172
-		pm_runtime_put_noidle(bdi->dev);
1152
+	ret = pm_runtime_resume_and_get(bdi->dev);
1153
+	if (ret < 0)
11731154 		return ret;
1174
-	}
11751155 
11761156 	switch (psp) {
11771157 	case POWER_SUPPLY_PROP_ONLINE:
....@@ -1223,8 +1203,19 @@
12231203 	struct bq24190_dev_info *bdi =
12241204 		container_of(work, struct bq24190_dev_info,
12251205 			     input_current_limit_work.work);
1206
+	union power_supply_propval val;
1207
+	int ret;
12261208 
1227
-	power_supply_set_input_current_limit_from_supplier(bdi->charger);
1209
+	ret = power_supply_get_property_from_supplier(bdi->charger,
1210
+						      POWER_SUPPLY_PROP_CURRENT_MAX,
1211
+						      &val);
1212
+	if (ret)
1213
+		return;
1214
+
1215
+	bq24190_charger_set_property(bdi->charger,
1216
+				     POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
1217
+				     &val);
1218
+	power_supply_changed(bdi->charger);
12281219 }
12291220 
12301221 /* Sync the input-current-limit with our parent supply (if we have one) */
....@@ -1430,11 +1421,9 @@
14301421 	dev_warn(bdi->dev, "warning: /sys/class/power_supply/bq24190-battery is deprecated\n");
14311422 	dev_dbg(bdi->dev, "prop: %d\n", psp);
14321423 
1433
-	ret = pm_runtime_get_sync(bdi->dev);
1434
-	if (ret < 0) {
1435
-		pm_runtime_put_noidle(bdi->dev);
1424
+	ret = pm_runtime_resume_and_get(bdi->dev);
1425
+	if (ret < 0)
14361426 		return ret;
1437
-	}
14381427 
14391428 	switch (psp) {
14401429 	case POWER_SUPPLY_PROP_STATUS:
....@@ -1478,11 +1467,9 @@
14781467 	dev_warn(bdi->dev, "warning: /sys/class/power_supply/bq24190-battery is deprecated\n");
14791468 	dev_dbg(bdi->dev, "prop: %d\n", psp);
14801469 
1481
-	ret = pm_runtime_get_sync(bdi->dev);
1482
-	if (ret < 0) {
1483
-		pm_runtime_put_noidle(bdi->dev);
1470
+	ret = pm_runtime_resume_and_get(bdi->dev);
1471
+	if (ret < 0)
14841472 		return ret;
1485
-	}
14861473 
14871474 	switch (psp) {
14881475 	case POWER_SUPPLY_PROP_ONLINE:
....@@ -1536,6 +1523,20 @@
15361523 	.set_property		= bq24190_battery_set_property,
15371524 	.property_is_writeable	= bq24190_battery_property_is_writeable,
15381525 };
1526
+
1527
+static int bq24190_configure_usb_otg(struct bq24190_dev_info *bdi, u8 ss_reg)
1528
+{
1529
+	bool otg_enabled;
1530
+	int ret;
1531
+
1532
+	otg_enabled = !!(ss_reg & BQ24190_REG_SS_VBUS_STAT_MASK);
1533
+	ret = extcon_set_state_sync(bdi->edev, EXTCON_USB, otg_enabled);
1534
+	if (ret < 0)
1535
+		dev_err(bdi->dev, "Can't set extcon state to %d: %d\n",
1536
+			otg_enabled, ret);
1537
+
1538
+	return ret;
1539
+}
15391540 
15401541 static void bq24190_check_status(struct bq24190_dev_info *bdi)
15411542 {
....@@ -1606,8 +1607,10 @@
16061607 		bdi->ss_reg = ss_reg;
16071608 	}
16081609 
1609
-	if (alert_charger || alert_battery)
1610
+	if (alert_charger || alert_battery) {
16101611 		power_supply_changed(bdi->charger);
1612
+		bq24190_configure_usb_otg(bdi, ss_reg);
1613
+	}
16111614 	if (alert_battery && bdi->battery)
16121615 		power_supply_changed(bdi->battery);
16131616 
....@@ -1620,10 +1623,9 @@
16201623 	int error;
16211624 
16221625 	bdi->irq_event = true;
1623
-	error = pm_runtime_get_sync(bdi->dev);
1626
+	error = pm_runtime_resume_and_get(bdi->dev);
16241627 	if (error < 0) {
16251628 		dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", error);
1626
-		pm_runtime_put_noidle(bdi->dev);
16271629 		return IRQ_NONE;
16281630 	}
16291631 	bq24190_check_status(bdi);
....@@ -1647,8 +1649,12 @@
16471649 	if (ret < 0)
16481650 		return ret;
16491651 
1650
-	if (v != BQ24190_REG_VPRS_PN_24190 &&
1651
-	    v != BQ24190_REG_VPRS_PN_24192I) {
1652
+	switch (v) {
1653
+	case BQ24190_REG_VPRS_PN_24190:
1654
+	case BQ24190_REG_VPRS_PN_24192:
1655
+	case BQ24190_REG_VPRS_PN_24192I:
1656
+		break;
1657
+	default:
16521658 		dev_err(bdi->dev, "Error unknown model: 0x%02x\n", v);
16531659 		return -ENODEV;
16541660 	}
....@@ -1704,7 +1710,7 @@
17041710 static int bq24190_probe(struct i2c_client *client,
17051711 		const struct i2c_device_id *id)
17061712 {
1707
-	struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
1713
+	struct i2c_adapter *adapter = client->adapter;
17081714 	struct device *dev = &client->dev;
17091715 	struct power_supply_config charger_cfg = {}, battery_cfg = {};
17101716 	struct bq24190_dev_info *bdi;
....@@ -1737,6 +1743,14 @@
17371743 		return -EINVAL;
17381744 	}
17391745 
1746
+	bdi->edev = devm_extcon_dev_allocate(dev, bq24190_usb_extcon_cable);
1747
+	if (IS_ERR(bdi->edev))
1748
+		return PTR_ERR(bdi->edev);
1749
+
1750
+	ret = devm_extcon_dev_register(dev, bdi->edev);
1751
+	if (ret < 0)
1752
+		return ret;
1753
+
17401754 	pm_runtime_enable(dev);
17411755 	pm_runtime_use_autosuspend(dev);
17421756 	pm_runtime_set_autosuspend_delay(dev, 600);
....@@ -1745,6 +1759,11 @@
17451759 		dev_err(dev, "pm_runtime_get failed: %i\n", ret);
17461760 		goto out_pmrt;
17471761 	}
1762
+
1763
+#ifdef CONFIG_SYSFS
1764
+	bq24190_sysfs_init_attrs();
1765
+	charger_cfg.attr_grp = bq24190_sysfs_groups;
1766
+#endif
17481767 
17491768 	charger_cfg.drv_data = bdi;
17501769 	charger_cfg.of_node = dev->of_node;
....@@ -1783,11 +1802,9 @@
17831802 		goto out_charger;
17841803 	}
17851804 
1786
-	ret = bq24190_sysfs_create_group(bdi);
1787
-	if (ret < 0) {
1788
-		dev_err(dev, "Can't create sysfs entries\n");
1805
+	ret = bq24190_configure_usb_otg(bdi, bdi->ss_reg);
1806
+	if (ret < 0)
17891807 		goto out_charger;
1790
-	}
17911808 
17921809 	bdi->initialized = true;
17931810 
....@@ -1797,12 +1814,12 @@
17971814 			"bq24190-charger", bdi);
17981815 	if (ret < 0) {
17991816 		dev_err(dev, "Can't set up irq handler\n");
1800
-		goto out_sysfs;
1817
+		goto out_charger;
18011818 	}
18021819 
18031820 	ret = bq24190_register_vbus_regulator(bdi);
18041821 	if (ret < 0)
1805
-		goto out_sysfs;
1822
+		goto out_charger;
18061823 
18071824 	enable_irq_wake(client->irq);
18081825 
....@@ -1810,9 +1827,6 @@
18101827 	pm_runtime_put_autosuspend(dev);
18111828 
18121829 	return 0;
1813
-
1814
-out_sysfs:
1815
-	bq24190_sysfs_remove_group(bdi);
18161830 
18171831 out_charger:
18181832 	if (!IS_ERR_OR_NULL(bdi->battery))
....@@ -1831,14 +1845,12 @@
18311845 	struct bq24190_dev_info *bdi = i2c_get_clientdata(client);
18321846 	int error;
18331847 
1834
-	error = pm_runtime_get_sync(bdi->dev);
1835
-	if (error < 0) {
1848
+	cancel_delayed_work_sync(&bdi->input_current_limit_work);
1849
+	error = pm_runtime_resume_and_get(bdi->dev);
1850
+	if (error < 0)
18361851 		dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", error);
1837
-		pm_runtime_put_noidle(bdi->dev);
1838
-	}
18391852 
18401853 	bq24190_register_reset(bdi);
1841
-	bq24190_sysfs_remove_group(bdi);
18421854 	if (bdi->battery)
18431855 		power_supply_unregister(bdi->battery);
18441856 	power_supply_unregister(bdi->charger);
....@@ -1885,11 +1897,9 @@
18851897 	struct bq24190_dev_info *bdi = i2c_get_clientdata(client);
18861898 	int error;
18871899 
1888
-	error = pm_runtime_get_sync(bdi->dev);
1889
-	if (error < 0) {
1900
+	error = pm_runtime_resume_and_get(bdi->dev);
1901
+	if (error < 0)
18901902 		dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", error);
1891
-		pm_runtime_put_noidle(bdi->dev);
1892
-	}
18931903 
18941904 	bq24190_register_reset(bdi);
18951905 
....@@ -1910,11 +1920,9 @@
19101920 	bdi->f_reg = 0;
19111921 	bdi->ss_reg = BQ24190_REG_SS_VBUS_STAT_MASK; /* impossible state */
19121922 
1913
-	error = pm_runtime_get_sync(bdi->dev);
1914
-	if (error < 0) {
1923
+	error = pm_runtime_resume_and_get(bdi->dev);
1924
+	if (error < 0)
19151925 		dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", error);
1916
-		pm_runtime_put_noidle(bdi->dev);
1917
-	}
19181926 
19191927 	bq24190_register_reset(bdi);
19201928 	bq24190_set_config(bdi);
....@@ -1941,7 +1949,9 @@
19411949 
19421950 static const struct i2c_device_id bq24190_i2c_ids[] = {
19431951 	{ "bq24190" },
1952
+	{ "bq24192" },
19441953 	{ "bq24192i" },
1954
+	{ "bq24196" },
19451955 	{ },
19461956 };
19471957 MODULE_DEVICE_TABLE(i2c, bq24190_i2c_ids);
....@@ -1949,7 +1959,9 @@
19491959 #ifdef CONFIG_OF
19501960 static const struct of_device_id bq24190_of_match[] = {
19511961 	{ .compatible = "ti,bq24190", },
1962
+	{ .compatible = "ti,bq24192", },
19521963 	{ .compatible = "ti,bq24192i", },
1964
+	{ .compatible = "ti,bq24196", },
19531965 	{ },
19541966 };
19551967 MODULE_DEVICE_TABLE(of, bq24190_of_match);