From c1f73028f75df43689feda4bc70573b7d18a618e Mon Sep 17 00:00:00 2001 From: Jonathan Bakker Date: Thu, 14 May 2020 16:04:33 -0700 Subject: power: supply: charger-manager: Update extcon functions In commit 830ae442202e ("extcon: Remove the deprecated extcon functions") the function extcon_register_interest became a no-op returning an error, leading to non-functional behaviour in charger-manager. Additionally, a translation table is needed between the text representation of the extcon cable names and their IDs is needed. In order to retain DT compatibility, TA and CHARGE-DOWNSTREAM are added as they were present up until commit 11eecf910bd8 ("extcon: Modify the id and name of external connector") Signed-off-by: Jonathan Bakker Signed-off-by: Sebastian Reichel --- drivers/power/supply/charger-manager.c | 82 +++++++++++++++++++++++++--------- 1 file changed, 60 insertions(+), 22 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/charger-manager.c b/drivers/power/supply/charger-manager.c index d3b2ed3ef720..5f536284d2ca 100644 --- a/drivers/power/supply/charger-manager.c +++ b/drivers/power/supply/charger-manager.c @@ -26,6 +26,29 @@ #include #include +static struct { + const char *name; + u64 extcon_type; +} extcon_mapping[] = { + /* Current textual representations */ + { "USB", EXTCON_USB }, + { "USB-HOST", EXTCON_USB_HOST }, + { "SDP", EXTCON_CHG_USB_SDP }, + { "DCP", EXTCON_CHG_USB_DCP }, + { "CDP", EXTCON_CHG_USB_CDP }, + { "ACA", EXTCON_CHG_USB_ACA }, + { "FAST-CHARGER", EXTCON_CHG_USB_FAST }, + { "SLOW-CHARGER", EXTCON_CHG_USB_SLOW }, + { "WPT", EXTCON_CHG_WPT }, + { "PD", EXTCON_CHG_USB_PD }, + { "DOCK", EXTCON_DOCK }, + { "JIG", EXTCON_JIG }, + { "MECHANICAL", EXTCON_MECHANICAL }, + /* Deprecated textual representations */ + { "TA", EXTCON_CHG_USB_SDP }, + { "CHARGE-DOWNSTREAM", EXTCON_CHG_USB_CDP }, +}; + /* * Default temperature threshold for charging. * Every temperature units are in tenth of centigrade. @@ -950,7 +973,8 @@ static int charger_extcon_notifier(struct notifier_block *self, static int charger_extcon_init(struct charger_manager *cm, struct charger_cable *cable) { - int ret; + int ret, i; + u64 extcon_type = EXTCON_NONE; /* * Charger manager use Extcon framework to identify @@ -959,14 +983,39 @@ static int charger_extcon_init(struct charger_manager *cm, */ INIT_WORK(&cable->wq, charger_extcon_work); cable->nb.notifier_call = charger_extcon_notifier; - ret = extcon_register_interest(&cable->extcon_dev, - cable->extcon_name, cable->name, &cable->nb); + + cable->extcon_dev = extcon_get_extcon_dev(cable->extcon_name); + if (IS_ERR_OR_NULL(cable->extcon_dev)) { + pr_err("Cannot find extcon_dev for %s (cable: %s)\n", + cable->extcon_name, cable->name); + if (cable->extcon_dev == NULL) + return -EPROBE_DEFER; + else + return PTR_ERR(cable->extcon_dev); + } + + for (i = 0; i < ARRAY_SIZE(extcon_mapping); i++) { + if (!strcmp(cable->name, extcon_mapping[i].name)) { + extcon_type = extcon_mapping[i].extcon_type; + break; + } + } + if (extcon_type == EXTCON_NONE) { + pr_err("Cannot find cable for type %s", cable->name); + return -EINVAL; + } + + cable->extcon_type = extcon_type; + + ret = devm_extcon_register_notifier(cm->dev, cable->extcon_dev, + cable->extcon_type, &cable->nb); if (ret < 0) { - pr_info("Cannot register extcon_dev for %s(cable: %s)\n", + pr_err("Cannot register extcon_dev for %s (cable: %s)\n", cable->extcon_name, cable->name); + return ret; } - return ret; + return 0; } /** @@ -983,6 +1032,7 @@ static int charger_manager_register_extcon(struct charger_manager *cm) { struct charger_desc *desc = cm->desc; struct charger_regulator *charger; + unsigned long event; int ret; int i; int j; @@ -1010,6 +1060,11 @@ static int charger_manager_register_extcon(struct charger_manager *cm) } cable->charger = charger; cable->cm = cm; + + event = extcon_get_state(cable->extcon_dev, + cable->extcon_type); + charger_extcon_notifier(&cable->nb, + event, NULL); } } @@ -1370,7 +1425,6 @@ static int charger_manager_probe(struct platform_device *pdev) struct charger_desc *desc = cm_get_drv_data(pdev); struct charger_manager *cm; int ret, i = 0; - int j = 0; union power_supply_propval val; struct power_supply *fuel_gauge; enum power_supply_property *properties; @@ -1572,12 +1626,6 @@ err_reg_extcon: struct charger_regulator *charger; charger = &desc->charger_regulators[i]; - for (j = 0; j < charger->num_cables; j++) { - struct charger_cable *cable = &charger->cables[j]; - /* Remove notifier block if only edev exists */ - if (cable->extcon_dev.edev) - extcon_unregister_interest(&cable->extcon_dev); - } regulator_put(desc->charger_regulators[i].consumer); } @@ -1592,7 +1640,6 @@ static int charger_manager_remove(struct platform_device *pdev) struct charger_manager *cm = platform_get_drvdata(pdev); struct charger_desc *desc = cm->desc; int i = 0; - int j = 0; /* Remove from the list */ mutex_lock(&cm_list_mtx); @@ -1602,15 +1649,6 @@ static int charger_manager_remove(struct platform_device *pdev) cancel_work_sync(&setup_polling); cancel_delayed_work_sync(&cm_monitor_work); - for (i = 0 ; i < desc->num_charger_regulators ; i++) { - struct charger_regulator *charger - = &desc->charger_regulators[i]; - for (j = 0 ; j < charger->num_cables ; j++) { - struct charger_cable *cable = &charger->cables[j]; - extcon_unregister_interest(&cable->extcon_dev); - } - } - for (i = 0 ; i < desc->num_charger_regulators ; i++) regulator_put(desc->charger_regulators[i].consumer); -- cgit v1.2.3