From patchwork Mon Jan 5 15:47:54 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 5569091 Return-Path: X-Original-To: patchwork-linux-acpi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 6B1E19F4DC for ; Mon, 5 Jan 2015 15:53:28 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D1F44201B4 for ; Mon, 5 Jan 2015 15:53:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3569D20121 for ; Mon, 5 Jan 2015 15:53:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754533AbbAEPv5 (ORCPT ); Mon, 5 Jan 2015 10:51:57 -0500 Received: from mailout1.w1.samsung.com ([210.118.77.11]:56286 "EHLO mailout1.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753421AbbAEPsY (ORCPT ); Mon, 5 Jan 2015 10:48:24 -0500 Received: from eucpsbgm1.samsung.com (unknown [203.254.199.244]) by mailout1.w1.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0NHP00JI5O3JIB60@mailout1.w1.samsung.com>; Mon, 05 Jan 2015 15:52:31 +0000 (GMT) X-AuditID: cbfec7f4-b7f126d000001e9a-ba-54aab24669ee Received: from eusync4.samsung.com ( [203.254.199.214]) by eucpsbgm1.samsung.com (EUCPMTA) with SMTP id A1.74.07834.642BAA45; Mon, 05 Jan 2015 15:48:22 +0000 (GMT) Received: from AMDC1943.digital.local ([106.116.151.171]) by eusync4.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0NHP00HBJNWDWI80@eusync4.samsung.com>; Mon, 05 Jan 2015 15:48:22 +0000 (GMT) From: Krzysztof Kozlowski To: "Rafael J. Wysocki" , Len Brown , Sebastian Reichel , Dmitry Eremin-Solenikov , David Woodhouse , Pavel Machek , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-pm@vger.kernel.org Cc: Krzysztof Kozlowski Subject: [RFC PATCHv2 11/19] power_supply: Change ownership from driver to core Date: Mon, 05 Jan 2015 16:47:54 +0100 Message-id: <1420472882-10463-12-git-send-email-k.kozlowski@samsung.com> X-Mailer: git-send-email 1.9.1 In-reply-to: <1420472882-10463-1-git-send-email-k.kozlowski@samsung.com> References: <1420472882-10463-1-git-send-email-k.kozlowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprBLMWRmVeSWpSXmKPExsVy+t/xa7pum1aFGPR361lMevKe2WLiysnM Fq9fGFrsfPiWzWL5vn5Gi02Pr7FaXN41h83ic+8RRou7p46yWZw5fYnV4vTuEgduj52z7rJ7 bF6h5bFpVSebx+Yl9R5brrazePRtWcXosWL1d3aPz5vkAjiiuGxSUnMyy1KL9O0SuDJeXP7M XPD/HXPF5dO32RsY78xh7mLk5JAQMJFoODidBcIWk7hwbz1bFyMXh5DAUkaJA8tAikCcPiaJ jbcfsYFUsQkYS2xevgSsSkTgCZPE9NaTYO3MAoYSP9/9YQexhQX8JW4ffgrWwCKgKvHq3jFW EJtXwEPiz5GvbBDr5CROHpsMFucEijf9vQA2R0jAXeLDs1+sExh5FzAyrGIUTS1NLihOSs81 1CtOzC0uzUvXS87P3cQICc0vOxgXH7M6xCjAwajEw+txYmWIEGtiWXFl7iFGCQ5mJRHeV+mr QoR4UxIrq1KL8uOLSnNSiw8xMnFwSjUwak798/tHtptXJMucvjV3WVVOZTEpSfE1eHw/J9P5 gbH6k+nJQ0W/mWZ9/qxW2Ju7R/Ln9xe1Ua4qzytXKK5K1bK2fRp0qrTmjcrUByUP1Bv+xDc/ L5oZtcbr4m6+TfvEOOdWmNdv//pEyvnIolUPH0rppX9hONqylvn8j1fxyrUB9xJMtnEuVGIp zkg01GIuKk4EAIGiY5crAgAA Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Change the ownership of power_supply structure from each driver implementing the class to the power supply core. Each driver provides the implementation of power supply. However it should not be the owner of 'power_supply' instance because it is exposed by core to other subsystems with power_supply_get_by_name(). These other subsystems have no knowledge when the driver will unregister the power supply. This leads to several issues when driver is unbound - mostly because user of power supply accesses freed memory. Instead let the core own the instance of struct 'power_supply'. Other users of this power supply will still access valid memory because it will be freed when device reference count reaches 0. Currently this means "it will leak" but power_supply_put() call in next patches will solve it. This is a partial way of solving invalid memory references in following race condition scenario: Thread 1: charger manager Thread 2: power supply driver, used by charger manager THREAD 1 (charger manager) THREAD 2 (power supply driver) ========================== ============================== psy = power_supply_get_by_name() Driver unbind, .remove power_supply_unregister() Device fully removed psy->get_property() The 'get_property' call is executed in invalid context because the driver was unbound and struct 'power_supply' memory was freed. This could be observed easily with charger manager driver (here compiled with max17040 fuel gauge): $ cat /sys/devices/virtual/power_supply/cm-battery/capacity & $ echo "1-0036" > /sys/bus/i2c/drivers/max17040/unbind [ 55.725123] Unable to handle kernel NULL pointer dereference at virtual address 00000000 [ 55.732584] pgd = d98d4000 [ 55.734060] [00000000] *pgd=5afa2831, *pte=00000000, *ppte=00000000 [ 55.740318] Internal error: Oops: 80000007 [#1] PREEMPT SMP ARM [ 55.746210] Modules linked in: [ 55.749259] CPU: 1 PID: 2936 Comm: cat Tainted: G W 3.19.0-rc1-next-20141226-00048-gf79f475f3c44-dirty #1496 [ 55.760190] Hardware name: SAMSUNG EXYNOS (Flattened Device Tree) [ 55.766270] task: d9b76f00 ti: daf54000 task.ti: daf54000 [ 55.771647] PC is at 0x0 [ 55.774182] LR is at charger_get_property+0x2f4/0x36c [ 55.779201] pc : [<00000000>] lr : [] psr: 60000013 [ 55.779201] sp : daf55e90 ip : 00000003 fp : 00000000 [ 55.790657] r10: 00000000 r9 : c06e2878 r8 : d9b26c68 [ 55.795865] r7 : dad81610 r6 : daec7410 r5 : daf55ebc r4 : 00000000 [ 55.802367] r3 : 00000000 r2 : daf55ebc r1 : 0000002a r0 : d9b26c68 [ 55.808879] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user [ 55.815994] Control: 10c5387d Table: 598d406a DAC: 00000015 [ 55.821723] Process cat (pid: 2936, stack limit = 0xdaf54210) [ 55.827451] Stack: (0xdaf55e90 to 0xdaf56000) [ 55.831795] 5e80: 60000013 c01459c4 0000002a c06f8ef8 [ 55.839956] 5ea0: db651000 c06f8ef8 daebac00 c04cb668 daebac08 c0346864 00000000 c01459c4 [ 55.848115] 5ec0: d99eaa80 c06f8ef8 00000fff 00001000 db651000 c027f25c c027f240 d99eaa80 [ 55.856274] 5ee0: d9a06c00 c0146218 daf55f18 00001000 d99eaa80 db4c18c0 00000001 00000001 [ 55.864468] 5f00: daf55f80 c0144c78 c0144c54 c0107f90 00015000 d99eaab0 00000000 00000000 [ 55.872603] 5f20: 000051c7 00000000 db4c18c0 c04a9370 00015000 00001000 daf55f80 00001000 [ 55.880763] 5f40: daf54000 00015000 00000000 c00e53dc db4c18c0 c00e548c 0000000d 00008124 [ 55.888937] 5f60: 00000001 00000000 00000000 db4c18c0 db4c18c0 00001000 00015000 c00e5550 [ 55.897099] 5f80: 00000000 00000000 00001000 00001000 00015000 00000003 00000003 c000f364 [ 55.905239] 5fa0: 00000000 c000f1a0 00001000 00015000 00000003 00015000 00001000 0001333c [ 55.913399] 5fc0: 00001000 00015000 00000003 00000003 00000002 00000000 00000000 00000000 [ 55.921560] 5fe0: 7fffe000 be999850 0000a225 b6f3c19c 60000010 00000003 00000000 00000000 [ 55.929744] [] (charger_get_property) from [] (power_supply_show_property+0x48/0x20c) [ 55.939286] [] (power_supply_show_property) from [] (dev_attr_show+0x1c/0x48) [ 55.948130] [] (dev_attr_show) from [] (sysfs_kf_seq_show+0x84/0x104) [ 55.956298] [] (sysfs_kf_seq_show) from [] (kernfs_seq_show+0x24/0x28) [ 55.964536] [] (kernfs_seq_show) from [] (seq_read+0x1b0/0x484) [ 55.972172] [] (seq_read) from [] (__vfs_read+0x18/0x4c) [ 55.979188] [] (__vfs_read) from [] (vfs_read+0x7c/0x100) [ 55.986304] [] (vfs_read) from [] (SyS_read+0x40/0x8c) [ 55.993164] [] (SyS_read) from [] (ret_fast_syscall+0x0/0x48) [ 56.000626] Code: bad PC value [ 56.011652] ---[ end trace 7b64343fbdae8ef1 ]--- Signed-off-by: Krzysztof Kozlowski --- drivers/power/bq24190_charger.c | 103 ++++++++++++------------- drivers/power/charger-manager.c | 53 ++++++------- drivers/power/max14577_charger.c | 34 ++++---- drivers/power/max17040_battery.c | 31 ++++---- drivers/power/max17042_battery.c | 45 +++++++---- drivers/power/power_supply_core.c | 141 ++++++++++++++++++---------------- drivers/power/power_supply_leds.c | 25 +++--- drivers/power/power_supply_sysfs.c | 18 ++--- drivers/power/sbs-battery.c | 69 ++++++++--------- drivers/power/tps65090-charger.c | 43 ++++++----- include/linux/power/charger-manager.h | 3 +- include/linux/power_supply.h | 39 ++++++---- 12 files changed, 323 insertions(+), 281 deletions(-) diff --git a/drivers/power/bq24190_charger.c b/drivers/power/bq24190_charger.c index f736c4c7c8fe..9215bc66fa88 100644 --- a/drivers/power/bq24190_charger.c +++ b/drivers/power/bq24190_charger.c @@ -152,8 +152,8 @@ struct bq24190_dev_info { struct i2c_client *client; struct device *dev; - struct power_supply charger; - struct power_supply battery; + struct power_supply *charger; + struct power_supply *battery; char model_name[I2C_NAME_SIZE]; kernel_ulong_t model; unsigned int gpio_int; @@ -423,8 +423,7 @@ static ssize_t bq24190_sysfs_show(struct device *dev, struct device_attribute *attr, char *buf) { struct power_supply *psy = dev_get_drvdata(dev); - struct bq24190_dev_info *bdi = - container_of(psy, struct bq24190_dev_info, charger); + struct bq24190_dev_info *bdi = power_supply_get_drvdata(psy); struct bq24190_sysfs_field_info *info; int ret; u8 v; @@ -444,8 +443,7 @@ static ssize_t bq24190_sysfs_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct power_supply *psy = dev_get_drvdata(dev); - struct bq24190_dev_info *bdi = - container_of(psy, struct bq24190_dev_info, charger); + struct bq24190_dev_info *bdi = power_supply_get_drvdata(psy); struct bq24190_sysfs_field_info *info; int ret; u8 v; @@ -469,13 +467,13 @@ static int bq24190_sysfs_create_group(struct bq24190_dev_info *bdi) { bq24190_sysfs_init_attrs(); - return sysfs_create_group(&bdi->charger.dev->kobj, + return sysfs_create_group(&bdi->charger->dev.kobj, &bq24190_sysfs_attr_group); } static void bq24190_sysfs_remove_group(struct bq24190_dev_info *bdi) { - sysfs_remove_group(&bdi->charger.dev->kobj, &bq24190_sysfs_attr_group); + sysfs_remove_group(&bdi->charger->dev.kobj, &bq24190_sysfs_attr_group); } #else static int bq24190_sysfs_create_group(struct bq24190_dev_info *bdi) @@ -807,8 +805,7 @@ static int bq24190_charger_set_voltage(struct bq24190_dev_info *bdi, static int bq24190_charger_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { - struct bq24190_dev_info *bdi = - container_of(psy, struct bq24190_dev_info, charger); + struct bq24190_dev_info *bdi = power_supply_get_drvdata(psy); int ret; dev_dbg(bdi->dev, "prop: %d\n", psp); @@ -861,8 +858,7 @@ static int bq24190_charger_set_property(struct power_supply *psy, enum power_supply_property psp, const union power_supply_propval *val) { - struct bq24190_dev_info *bdi = - container_of(psy, struct bq24190_dev_info, charger); + struct bq24190_dev_info *bdi = power_supply_get_drvdata(psy); int ret; dev_dbg(bdi->dev, "prop: %d\n", psp); @@ -922,18 +918,15 @@ static char *bq24190_charger_supplied_to[] = { "main-battery", }; -static void bq24190_charger_init(struct power_supply *charger) -{ - charger->name = "bq24190-charger"; - charger->type = POWER_SUPPLY_TYPE_USB; - charger->properties = bq24190_charger_properties; - charger->num_properties = ARRAY_SIZE(bq24190_charger_properties); - charger->supplied_to = bq24190_charger_supplied_to; - charger->num_supplicants = ARRAY_SIZE(bq24190_charger_supplied_to); - charger->get_property = bq24190_charger_get_property; - charger->set_property = bq24190_charger_set_property; - charger->property_is_writeable = bq24190_charger_property_is_writeable; -} +static const struct power_supply_desc bq24190_charger_desc = { + .name = "bq24190-charger", + .type = POWER_SUPPLY_TYPE_USB, + .properties = bq24190_charger_properties, + .num_properties = ARRAY_SIZE(bq24190_charger_properties), + .get_property = bq24190_charger_get_property, + .set_property = bq24190_charger_set_property, + .property_is_writeable = bq24190_charger_property_is_writeable, +}; /* Battery power supply property routines */ @@ -1102,8 +1095,7 @@ static int bq24190_battery_set_temp_alert_max(struct bq24190_dev_info *bdi, static int bq24190_battery_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { - struct bq24190_dev_info *bdi = - container_of(psy, struct bq24190_dev_info, battery); + struct bq24190_dev_info *bdi = power_supply_get_drvdata(psy); int ret; dev_dbg(bdi->dev, "prop: %d\n", psp); @@ -1144,8 +1136,7 @@ static int bq24190_battery_set_property(struct power_supply *psy, enum power_supply_property psp, const union power_supply_propval *val) { - struct bq24190_dev_info *bdi = - container_of(psy, struct bq24190_dev_info, battery); + struct bq24190_dev_info *bdi = power_supply_get_drvdata(psy); int ret; dev_dbg(bdi->dev, "prop: %d\n", psp); @@ -1193,16 +1184,15 @@ static enum power_supply_property bq24190_battery_properties[] = { POWER_SUPPLY_PROP_SCOPE, }; -static void bq24190_battery_init(struct power_supply *battery) -{ - battery->name = "bq24190-battery"; - battery->type = POWER_SUPPLY_TYPE_BATTERY; - battery->properties = bq24190_battery_properties; - battery->num_properties = ARRAY_SIZE(bq24190_battery_properties); - battery->get_property = bq24190_battery_get_property; - battery->set_property = bq24190_battery_set_property; - battery->property_is_writeable = bq24190_battery_property_is_writeable; -} +static const struct power_supply_desc bq24190_battery_desc = { + .name = "bq24190-battery", + .type = POWER_SUPPLY_TYPE_BATTERY, + .properties = bq24190_battery_properties, + .num_properties = ARRAY_SIZE(bq24190_battery_properties), + .get_property = bq24190_battery_get_property, + .set_property = bq24190_battery_set_property, + .property_is_writeable = bq24190_battery_property_is_writeable, +}; static irqreturn_t bq24190_irq_handler_thread(int irq, void *data) { @@ -1269,8 +1259,8 @@ static irqreturn_t bq24190_irq_handler_thread(int irq, void *data) * interrupt received). */ if (alert_userspace && !bdi->first_time) { - power_supply_changed(&bdi->charger); - power_supply_changed(&bdi->battery); + power_supply_changed(bdi->charger); + power_supply_changed(bdi->battery); bdi->first_time = false; } @@ -1362,6 +1352,7 @@ static int bq24190_probe(struct i2c_client *client, struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); struct device *dev = &client->dev; struct bq24190_platform_data *pdata = client->dev.platform_data; + struct power_supply_config charger_cfg = {}, battery_cfg = {}; struct bq24190_dev_info *bdi; int ret; @@ -1416,19 +1407,23 @@ static int bq24190_probe(struct i2c_client *client, goto out2; } - bq24190_charger_init(&bdi->charger); - - ret = power_supply_register(dev, &bdi->charger, NULL); - if (ret) { + charger_cfg.drv_data = bdi; + charger_cfg.supplied_to = bq24190_charger_supplied_to; + charger_cfg.num_supplicants = ARRAY_SIZE(bq24190_charger_supplied_to), + bdi->charger = power_supply_register(dev, &bq24190_charger_desc, + &charger_cfg); + if (IS_ERR(bdi->charger)) { dev_err(dev, "Can't register charger\n"); + ret = PTR_ERR(bdi->charger); goto out2; } - bq24190_battery_init(&bdi->battery); - - ret = power_supply_register(dev, &bdi->battery, NULL); - if (ret) { + battery_cfg.drv_data = bdi; + bdi->battery = power_supply_register(dev, &bq24190_battery_desc, + &battery_cfg); + if (IS_ERR(bdi->battery)) { dev_err(dev, "Can't register battery\n"); + ret = PTR_ERR(bdi->battery); goto out3; } @@ -1441,9 +1436,9 @@ static int bq24190_probe(struct i2c_client *client, return 0; out4: - power_supply_unregister(&bdi->battery); + power_supply_unregister(bdi->battery); out3: - power_supply_unregister(&bdi->charger); + power_supply_unregister(bdi->charger); out2: pm_runtime_disable(dev); out1: @@ -1462,8 +1457,8 @@ static int bq24190_remove(struct i2c_client *client) pm_runtime_put_sync(bdi->dev); bq24190_sysfs_remove_group(bdi); - power_supply_unregister(&bdi->battery); - power_supply_unregister(&bdi->charger); + power_supply_unregister(bdi->battery); + power_supply_unregister(bdi->charger); pm_runtime_disable(bdi->dev); if (bdi->gpio_int) @@ -1499,8 +1494,8 @@ static int bq24190_pm_resume(struct device *dev) pm_runtime_put_sync(bdi->dev); /* Things may have changed while suspended so alert upper layer */ - power_supply_changed(&bdi->charger); - power_supply_changed(&bdi->battery); + power_supply_changed(bdi->charger); + power_supply_changed(bdi->battery); return 0; } diff --git a/drivers/power/charger-manager.c b/drivers/power/charger-manager.c index 1d5065ebbd83..a9870b9ff571 100644 --- a/drivers/power/charger-manager.c +++ b/drivers/power/charger-manager.c @@ -874,8 +874,7 @@ static int charger_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { - struct charger_manager *cm = container_of(psy, - struct charger_manager, charger_psy); + struct charger_manager *cm = power_supply_get_drvdata(psy); struct charger_desc *desc = cm->desc; struct power_supply *fuel_gauge; int ret = 0; @@ -1032,7 +1031,7 @@ static enum power_supply_property default_charger_props[] = { */ }; -static struct power_supply psy_default = { +static const struct power_supply_desc psy_default = { .name = "battery", .type = POWER_SUPPLY_TYPE_BATTERY, .properties = default_charger_props, @@ -1534,7 +1533,7 @@ static int charger_manager_register_sysfs(struct charger_manager *cm) dev_info(cm->dev, "'%s' regulator's externally_control is %d\n", charger->regulator_name, charger->externally_control); - ret = sysfs_create_group(&cm->charger_psy.dev->kobj, + ret = sysfs_create_group(&cm->charger_psy->dev.kobj, &charger->attr_g); if (ret < 0) { dev_err(cm->dev, "Cannot create sysfs entry of %s regulator\n", @@ -1566,9 +1565,9 @@ static int cm_init_thermal_data(struct charger_manager *cm, POWER_SUPPLY_PROP_TEMP, &val); if (!ret) { - cm->charger_psy.properties[cm->charger_psy.num_properties] = + cm->charger_psy_desc.properties[cm->charger_psy_desc.num_properties] = POWER_SUPPLY_PROP_TEMP; - cm->charger_psy.num_properties++; + cm->charger_psy_desc.num_properties++; cm->desc->measure_battery_temp = true; } #ifdef CONFIG_THERMAL @@ -1579,9 +1578,9 @@ static int cm_init_thermal_data(struct charger_manager *cm, return PTR_ERR(cm->tzd_batt); /* Use external thermometer */ - cm->charger_psy.properties[cm->charger_psy.num_properties] = + cm->charger_psy_desc.properties[cm->charger_psy_desc.num_properties] = POWER_SUPPLY_PROP_TEMP_AMBIENT; - cm->charger_psy.num_properties++; + cm->charger_psy_desc.num_properties++; cm->desc->measure_battery_temp = true; ret = 0; } @@ -1735,6 +1734,7 @@ static int charger_manager_probe(struct platform_device *pdev) int j = 0; union power_supply_propval val; struct power_supply *fuel_gauge; + struct power_supply_config psy_cfg = {}; if (g_desc && !rtc_dev && g_desc->rtc_name) { rtc_dev = rtc_class_open(g_desc->rtc_name); @@ -1759,6 +1759,7 @@ static int charger_manager_probe(struct platform_device *pdev) /* Basic Values. Unspecified are Null or 0 */ cm->dev = &pdev->dev; cm->desc = desc; + psy_cfg.drv_data = cm; /* * The following two do not need to be errors. @@ -1832,40 +1833,40 @@ static int charger_manager_probe(struct platform_device *pdev) platform_set_drvdata(pdev, cm); - memcpy(&cm->charger_psy, &psy_default, sizeof(psy_default)); + memcpy(&cm->charger_psy_desc, &psy_default, sizeof(psy_default)); if (!desc->psy_name) strncpy(cm->psy_name_buf, psy_default.name, PSY_NAME_MAX); else strncpy(cm->psy_name_buf, desc->psy_name, PSY_NAME_MAX); - cm->charger_psy.name = cm->psy_name_buf; + cm->charger_psy_desc.name = cm->psy_name_buf; /* Allocate for psy properties because they may vary */ - cm->charger_psy.properties = devm_kzalloc(&pdev->dev, + cm->charger_psy_desc.properties = devm_kzalloc(&pdev->dev, sizeof(enum power_supply_property) * (ARRAY_SIZE(default_charger_props) + NUM_CHARGER_PSY_OPTIONAL), GFP_KERNEL); - if (!cm->charger_psy.properties) + if (!cm->charger_psy_desc.properties) return -ENOMEM; - memcpy(cm->charger_psy.properties, default_charger_props, + memcpy(cm->charger_psy_desc.properties, default_charger_props, sizeof(enum power_supply_property) * ARRAY_SIZE(default_charger_props)); - cm->charger_psy.num_properties = psy_default.num_properties; + cm->charger_psy_desc.num_properties = psy_default.num_properties; /* Find which optional psy-properties are available */ if (!power_supply_get_property(fuel_gauge, POWER_SUPPLY_PROP_CHARGE_NOW, &val)) { - cm->charger_psy.properties[cm->charger_psy.num_properties] = + cm->charger_psy_desc.properties[cm->charger_psy_desc.num_properties] = POWER_SUPPLY_PROP_CHARGE_NOW; - cm->charger_psy.num_properties++; + cm->charger_psy_desc.num_properties++; } if (!power_supply_get_property(fuel_gauge, POWER_SUPPLY_PROP_CURRENT_NOW, &val)) { - cm->charger_psy.properties[cm->charger_psy.num_properties] = + cm->charger_psy_desc.properties[cm->charger_psy_desc.num_properties] = POWER_SUPPLY_PROP_CURRENT_NOW; - cm->charger_psy.num_properties++; + cm->charger_psy_desc.num_properties++; } ret = cm_init_thermal_data(cm, fuel_gauge); @@ -1876,11 +1877,11 @@ static int charger_manager_probe(struct platform_device *pdev) INIT_DELAYED_WORK(&cm->fullbatt_vchk_work, fullbatt_vchk); - ret = power_supply_register(NULL, &cm->charger_psy, NULL); - if (ret) { + cm->charger_psy = power_supply_register(NULL, &cm->charger_psy_desc, &psy_cfg); + if (IS_ERR(cm->charger_psy)) { dev_err(&pdev->dev, "Cannot register charger-manager with name \"%s\"\n", - cm->charger_psy.name); - return ret; + cm->charger_psy->desc->name); + return PTR_ERR(cm->charger_psy); } /* Register extcon device for charger cable */ @@ -1926,7 +1927,7 @@ err_reg_sysfs: struct charger_regulator *charger; charger = &desc->charger_regulators[i]; - sysfs_remove_group(&cm->charger_psy.dev->kobj, + sysfs_remove_group(&cm->charger_psy->dev.kobj, &charger->attr_g); } err_reg_extcon: @@ -1944,7 +1945,7 @@ err_reg_extcon: regulator_put(desc->charger_regulators[i].consumer); } - power_supply_unregister(&cm->charger_psy); + power_supply_unregister(cm->charger_psy); return ret; } @@ -1976,7 +1977,7 @@ static int charger_manager_remove(struct platform_device *pdev) for (i = 0 ; i < desc->num_charger_regulators ; i++) regulator_put(desc->charger_regulators[i].consumer); - power_supply_unregister(&cm->charger_psy); + power_supply_unregister(cm->charger_psy); try_charger_enable(cm, false); @@ -2132,7 +2133,7 @@ static bool find_power_supply(struct charger_manager *cm, bool found = false; for (i = 0; cm->desc->psy_charger_stat[i]; i++) { - if (!strcmp(psy->name, cm->desc->psy_charger_stat[i])) { + if (!strcmp(psy->desc->name, cm->desc->psy_charger_stat[i])) { found = true; break; } diff --git a/drivers/power/max14577_charger.c b/drivers/power/max14577_charger.c index 8f113ed73e6c..70d601f82098 100644 --- a/drivers/power/max14577_charger.c +++ b/drivers/power/max14577_charger.c @@ -22,9 +22,9 @@ #include struct max14577_charger { - struct device *dev; - struct max14577 *max14577; - struct power_supply charger; + struct device *dev; + struct max14577 *max14577; + struct power_supply *charger; unsigned int charging_state; unsigned int battery_state; @@ -389,9 +389,7 @@ static int max14577_charger_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { - struct max14577_charger *chg = container_of(psy, - struct max14577_charger, - charger); + struct max14577_charger *chg = power_supply_get_drvdata(psy); int ret = 0; switch (psp) { @@ -424,6 +422,14 @@ static int max14577_charger_get_property(struct power_supply *psy, return ret; } +static const struct power_supply_desc max14577_charger_desc = { + .name = "max14577-charger", + .type = POWER_SUPPLY_TYPE_BATTERY, + .properties = max14577_charger_props, + .num_properties = ARRAY_SIZE(max14577_charger_props), + .get_property = max14577_charger_get_property, +}; + #ifdef CONFIG_OF static struct max14577_charger_platform_data *max14577_charger_dt_init( struct platform_device *pdev) @@ -531,6 +537,7 @@ static DEVICE_ATTR(fast_charge_timer, S_IRUGO | S_IWUSR, static int max14577_charger_probe(struct platform_device *pdev) { struct max14577_charger *chg; + struct power_supply_config psy_cfg = {}; struct max14577 *max14577 = dev_get_drvdata(pdev->dev.parent); int ret; @@ -550,21 +557,18 @@ static int max14577_charger_probe(struct platform_device *pdev) if (ret) return ret; - chg->charger.name = "max14577-charger", - chg->charger.type = POWER_SUPPLY_TYPE_BATTERY, - chg->charger.properties = max14577_charger_props, - chg->charger.num_properties = ARRAY_SIZE(max14577_charger_props), - chg->charger.get_property = max14577_charger_get_property, - ret = device_create_file(&pdev->dev, &dev_attr_fast_charge_timer); if (ret) { dev_err(&pdev->dev, "failed: create sysfs entry\n"); return ret; } - ret = power_supply_register(&pdev->dev, &chg->charger, NULL); - if (ret) { + psy_cfg.drv_data = chg; + chg->charger = power_supply_register(&pdev->dev, &max14577_charger_desc, + &psy_cfg); + if (IS_ERR(chg->charger)) { dev_err(&pdev->dev, "failed: power supply register\n"); + ret = PTR_ERR(chg->charger); goto err; } @@ -585,7 +589,7 @@ static int max14577_charger_remove(struct platform_device *pdev) struct max14577_charger *chg = platform_get_drvdata(pdev); device_remove_file(&pdev->dev, &dev_attr_fast_charge_timer); - power_supply_unregister(&chg->charger); + power_supply_unregister(chg->charger); return 0; } diff --git a/drivers/power/max17040_battery.c b/drivers/power/max17040_battery.c index bf42c57a4247..2bfe4bbbc29a 100644 --- a/drivers/power/max17040_battery.c +++ b/drivers/power/max17040_battery.c @@ -40,7 +40,7 @@ struct max17040_chip { struct i2c_client *client; struct delayed_work work; - struct power_supply battery; + struct power_supply *battery; struct max17040_platform_data *pdata; /* State Of Connect */ @@ -57,8 +57,7 @@ static int max17040_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { - struct max17040_chip *chip = container_of(psy, - struct max17040_chip, battery); + struct max17040_chip *chip = power_supply_get_drvdata(psy); switch (psp) { case POWER_SUPPLY_PROP_STATUS: @@ -198,12 +197,20 @@ static enum power_supply_property max17040_battery_props[] = { POWER_SUPPLY_PROP_CAPACITY, }; +static const struct power_supply_desc max17040_battery_desc = { + .name = "battery", + .type = POWER_SUPPLY_TYPE_BATTERY, + .get_property = max17040_get_property, + .properties = max17040_battery_props, + .num_properties = ARRAY_SIZE(max17040_battery_props), +}; + static int max17040_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); + struct power_supply_config psy_cfg = {}; struct max17040_chip *chip; - int ret; if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE)) return -EIO; @@ -216,17 +223,13 @@ static int max17040_probe(struct i2c_client *client, chip->pdata = client->dev.platform_data; i2c_set_clientdata(client, chip); + psy_cfg.drv_data = chip; - chip->battery.name = "battery"; - chip->battery.type = POWER_SUPPLY_TYPE_BATTERY; - chip->battery.get_property = max17040_get_property; - chip->battery.properties = max17040_battery_props; - chip->battery.num_properties = ARRAY_SIZE(max17040_battery_props); - - ret = power_supply_register(&client->dev, &chip->battery, NULL); - if (ret) { + chip->battery = power_supply_register(&client->dev, + &max17040_battery_desc, &psy_cfg); + if (IS_ERR(chip->battery)) { dev_err(&client->dev, "failed: power supply register\n"); - return ret; + return PTR_ERR(chip->battery); } max17040_reset(client); @@ -242,7 +245,7 @@ static int max17040_remove(struct i2c_client *client) { struct max17040_chip *chip = i2c_get_clientdata(client); - power_supply_unregister(&chip->battery); + power_supply_unregister(chip->battery); cancel_delayed_work(&chip->work); return 0; } diff --git a/drivers/power/max17042_battery.c b/drivers/power/max17042_battery.c index c62d1428803e..40e7056d211e 100644 --- a/drivers/power/max17042_battery.c +++ b/drivers/power/max17042_battery.c @@ -69,7 +69,7 @@ struct max17042_chip { struct i2c_client *client; struct regmap *regmap; - struct power_supply battery; + struct power_supply *battery; enum max170xx_chip_type chip_type; struct max17042_platform_data *pdata; struct work_struct work; @@ -96,8 +96,7 @@ static int max17042_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { - struct max17042_chip *chip = container_of(psy, - struct max17042_chip, battery); + struct max17042_chip *chip = power_supply_get_drvdata(psy); struct regmap *map = chip->regmap; int ret; u32 data; @@ -604,7 +603,7 @@ static irqreturn_t max17042_thread_handler(int id, void *dev) max17042_set_soc_threshold(chip, 1); } - power_supply_changed(&chip->battery); + power_supply_changed(chip->battery); return IRQ_HANDLED; } @@ -664,10 +663,28 @@ static const struct regmap_config max17042_regmap_config = { .val_format_endian = REGMAP_ENDIAN_NATIVE, }; +static const struct power_supply_desc max17042_psy_desc = { + .name = "max170xx_battery", + .type = POWER_SUPPLY_TYPE_BATTERY, + .get_property = max17042_get_property, + .properties = max17042_battery_props, + .num_properties = ARRAY_SIZE(max17042_battery_props), +}; + +static const struct power_supply_desc max17042_no_current_sense_psy_desc = { + .name = "max170xx_battery", + .type = POWER_SUPPLY_TYPE_BATTERY, + .get_property = max17042_get_property, + .properties = max17042_battery_props, + .num_properties = ARRAY_SIZE(max17042_battery_props) - 2, +}; + static int max17042_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); + const struct power_supply_desc *max17042_desc = &max17042_psy_desc; + struct power_supply_config psy_cfg = {}; struct max17042_chip *chip; int ret; int i; @@ -694,6 +711,7 @@ static int max17042_probe(struct i2c_client *client, } i2c_set_clientdata(client, chip); + psy_cfg.drv_data = chip; regmap_read(chip->regmap, MAX17042_DevName, &val); if (val == MAX17042_IC_VERSION) { @@ -707,16 +725,10 @@ static int max17042_probe(struct i2c_client *client, return -EIO; } - chip->battery.name = "max170xx_battery"; - chip->battery.type = POWER_SUPPLY_TYPE_BATTERY; - chip->battery.get_property = max17042_get_property; - chip->battery.properties = max17042_battery_props; - chip->battery.num_properties = ARRAY_SIZE(max17042_battery_props); - /* When current is not measured, * CURRENT_NOW and CURRENT_AVG properties should be invisible. */ if (!chip->pdata->enable_current_sense) - chip->battery.num_properties -= 2; + max17042_desc = &max17042_no_current_sense_psy_desc; if (chip->pdata->r_sns == 0) chip->pdata->r_sns = MAX17042_DEFAULT_SNS_RESISTOR; @@ -733,17 +745,18 @@ static int max17042_probe(struct i2c_client *client, regmap_write(chip->regmap, MAX17042_LearnCFG, 0x0007); } - ret = power_supply_register(&client->dev, &chip->battery, NULL); - if (ret) { + chip->battery = power_supply_register(&client->dev, max17042_desc, + &psy_cfg); + if (IS_ERR(chip->battery)) { dev_err(&client->dev, "failed: power supply register\n"); - return ret; + return PTR_ERR(chip->battery); } if (client->irq) { ret = request_threaded_irq(client->irq, NULL, max17042_thread_handler, IRQF_TRIGGER_FALLING | IRQF_ONESHOT, - chip->battery.name, chip); + chip->battery->desc->name, chip); if (!ret) { regmap_read(chip->regmap, MAX17042_CONFIG, &val); val |= CONFIG_ALRT_BIT_ENBL; @@ -773,7 +786,7 @@ static int max17042_remove(struct i2c_client *client) if (client->irq) free_irq(client->irq, chip); - power_supply_unregister(&chip->battery); + power_supply_unregister(chip->battery); return 0; } diff --git a/drivers/power/power_supply_core.c b/drivers/power/power_supply_core.c index fdec3c29fc3c..ec9ac01074c7 100644 --- a/drivers/power/power_supply_core.c +++ b/drivers/power/power_supply_core.c @@ -40,16 +40,16 @@ static bool __power_supply_is_supplied_by(struct power_supply *supplier, /* Support both supplied_to and supplied_from modes */ if (supply->supplied_from) { - if (!supplier->name) + if (!supplier->desc->name) return false; for (i = 0; i < supply->num_supplies; i++) - if (!strcmp(supplier->name, supply->supplied_from[i])) + if (!strcmp(supplier->desc->name, supply->supplied_from[i])) return true; } else { - if (!supply->name) + if (!supply->desc->name) return false; for (i = 0; i < supplier->num_supplicants; i++) - if (!strcmp(supplier->supplied_to[i], supply->name)) + if (!strcmp(supplier->supplied_to[i], supply->desc->name)) return true; } @@ -62,8 +62,8 @@ static int __power_supply_changed_work(struct device *dev, void *data) struct power_supply *pst = dev_get_drvdata(dev); if (__power_supply_is_supplied_by(psy, pst)) { - if (pst->external_power_changed) - pst->external_power_changed(pst); + if (pst->desc->external_power_changed) + pst->desc->external_power_changed(pst); } return 0; @@ -75,7 +75,7 @@ static void power_supply_changed_work(struct work_struct *work) struct power_supply *psy = container_of(work, struct power_supply, changed_work); - dev_dbg(psy->dev, "%s\n", __func__); + dev_dbg(&psy->dev, "%s\n", __func__); spin_lock_irqsave(&psy->changed_lock, flags); /* @@ -93,7 +93,7 @@ static void power_supply_changed_work(struct work_struct *work) power_supply_update_leds(psy); atomic_notifier_call_chain(&power_supply_notifier, PSY_EVENT_PROP_CHANGED, psy); - kobject_uevent(&psy->dev->kobj, KOBJ_CHANGE); + kobject_uevent(&psy->dev.kobj, KOBJ_CHANGE); spin_lock_irqsave(&psy->changed_lock, flags); } @@ -103,7 +103,7 @@ static void power_supply_changed_work(struct work_struct *work) * to true. */ if (likely(!psy->changed)) - pm_relax(psy->dev); + pm_relax(&psy->dev); spin_unlock_irqrestore(&psy->changed_lock, flags); } @@ -111,11 +111,11 @@ void power_supply_changed(struct power_supply *psy) { unsigned long flags; - dev_dbg(psy->dev, "%s\n", __func__); + dev_dbg(&psy->dev, "%s\n", __func__); spin_lock_irqsave(&psy->changed_lock, flags); psy->changed = true; - pm_stay_awake(psy->dev); + pm_stay_awake(&psy->dev); spin_unlock_irqrestore(&psy->changed_lock, flags); schedule_work(&psy->changed_work); } @@ -138,9 +138,9 @@ static int __power_supply_populate_supplied_from(struct device *dev, break; if (np == epsy->of_node) { - dev_info(psy->dev, "%s: Found supply : %s\n", - psy->name, epsy->name); - psy->supplied_from[i-1] = (char *)epsy->name; + dev_info(&psy->dev, "%s: Found supply : %s\n", + psy->desc->name, epsy->desc->name); + psy->supplied_from[i-1] = (char *)epsy->desc->name; psy->num_supplies++; of_node_put(np); break; @@ -158,7 +158,7 @@ static int power_supply_populate_supplied_from(struct power_supply *psy) error = class_for_each_device(power_supply_class, NULL, psy, __power_supply_populate_supplied_from); - dev_dbg(psy->dev, "%s %d\n", __func__, error); + dev_dbg(&psy->dev, "%s %d\n", __func__, error); return error; } @@ -220,7 +220,7 @@ static int power_supply_check_supplies(struct power_supply *psy) of_node_put(np); if (ret) { - dev_dbg(psy->dev, "Failed to find supply!\n"); + dev_dbg(&psy->dev, "Failed to find supply!\n"); return ret; } } while (np); @@ -230,17 +230,18 @@ static int power_supply_check_supplies(struct power_supply *psy) return 0; /* All supplies found, allocate char ** array for filling */ - psy->supplied_from = devm_kzalloc(psy->dev, sizeof(psy->supplied_from), + psy->supplied_from = devm_kzalloc(&psy->dev, sizeof(psy->supplied_from), GFP_KERNEL); if (!psy->supplied_from) { - dev_err(psy->dev, "Couldn't allocate memory for supply list\n"); + dev_err(&psy->dev, "Couldn't allocate memory for supply list\n"); return -ENOMEM; } - *psy->supplied_from = devm_kzalloc(psy->dev, sizeof(char *) * (cnt - 1), + *psy->supplied_from = devm_kzalloc(&psy->dev, + sizeof(char *) * (cnt - 1), GFP_KERNEL); if (!*psy->supplied_from) { - dev_err(psy->dev, "Couldn't allocate memory for supply list\n"); + dev_err(&psy->dev, "Couldn't allocate memory for supply list\n"); return -ENOMEM; } @@ -260,7 +261,8 @@ static int __power_supply_am_i_supplied(struct device *dev, void *data) struct power_supply *epsy = dev_get_drvdata(dev); if (__power_supply_is_supplied_by(epsy, psy)) - if (!epsy->get_property(epsy, POWER_SUPPLY_PROP_ONLINE, &ret)) + if (!epsy->desc->get_property(epsy, POWER_SUPPLY_PROP_ONLINE, + &ret)) return ret.intval; return 0; @@ -273,7 +275,7 @@ int power_supply_am_i_supplied(struct power_supply *psy) error = class_for_each_device(power_supply_class, NULL, psy, __power_supply_am_i_supplied); - dev_dbg(psy->dev, "%s %d\n", __func__, error); + dev_dbg(&psy->dev, "%s %d\n", __func__, error); return error; } @@ -286,8 +288,9 @@ static int __power_supply_is_system_supplied(struct device *dev, void *data) unsigned int *count = data; (*count)++; - if (psy->type != POWER_SUPPLY_TYPE_BATTERY) - if (!psy->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &ret)) + if (psy->desc->type != POWER_SUPPLY_TYPE_BATTERY) + if (!psy->desc->get_property(psy, POWER_SUPPLY_PROP_ONLINE, + &ret)) return ret.intval; return 0; @@ -314,9 +317,9 @@ EXPORT_SYMBOL_GPL(power_supply_is_system_supplied); int power_supply_set_battery_charged(struct power_supply *psy) { - if (psy->use_cnt >= 0 && psy->type == POWER_SUPPLY_TYPE_BATTERY && - psy->set_charged) { - psy->set_charged(psy); + if (psy->use_cnt >= 0 && psy->desc->type == POWER_SUPPLY_TYPE_BATTERY && + psy->desc->set_charged) { + psy->desc->set_charged(psy); return 0; } @@ -329,7 +332,7 @@ static int power_supply_match_device_by_name(struct device *dev, const void *dat const char *name = data; struct power_supply *psy = dev_get_drvdata(dev); - return strcmp(psy->name, name) == 0; + return strcmp(psy->desc->name, name) == 0; } struct power_supply *power_supply_get_by_name(const char *name) @@ -374,7 +377,7 @@ int power_supply_get_property(struct power_supply *psy, if (psy->use_cnt <= 0) return -ENODEV; - return psy->get_property(psy, psp, val); + return psy->desc->get_property(psy, psp, val); } EXPORT_SYMBOL_GPL(power_supply_get_property); @@ -382,42 +385,43 @@ int power_supply_set_property(struct power_supply *psy, enum power_supply_property psp, const union power_supply_propval *val) { - if (psy->use_cnt <= 0 || !psy->set_property) + if (psy->use_cnt <= 0 || !psy->desc->set_property) return -ENODEV; - return psy->set_property(psy, psp, val); + return psy->desc->set_property(psy, psp, val); } EXPORT_SYMBOL_GPL(power_supply_set_property); int power_supply_property_is_writeable(struct power_supply *psy, enum power_supply_property psp) { - if (psy->use_cnt <= 0 || !psy->property_is_writeable) + if (psy->use_cnt <= 0 || !psy->desc->property_is_writeable) return -ENODEV; - return psy->property_is_writeable(psy, psp); + return psy->desc->property_is_writeable(psy, psp); } EXPORT_SYMBOL_GPL(power_supply_property_is_writeable); void power_supply_external_power_changed(struct power_supply *psy) { - if (psy->use_cnt <= 0 || !psy->external_power_changed) + if (psy->use_cnt <= 0 || !psy->desc->external_power_changed) return; - psy->external_power_changed(psy); + psy->desc->external_power_changed(psy); } EXPORT_SYMBOL_GPL(power_supply_external_power_changed); int power_supply_powers(struct power_supply *psy, struct device *dev) { - return sysfs_create_link(&psy->dev->kobj, &dev->kobj, "powers"); + return sysfs_create_link(&psy->dev.kobj, &dev->kobj, "powers"); } EXPORT_SYMBOL_GPL(power_supply_powers); static void power_supply_dev_release(struct device *dev) { + struct power_supply *psy = container_of(dev, struct power_supply, dev); pr_debug("device: '%s': %s\n", dev_name(dev), __func__); - kfree(dev); + kfree(psy); } int power_supply_reg_notifier(struct notifier_block *nb) @@ -442,7 +446,7 @@ static int power_supply_read_temp(struct thermal_zone_device *tzd, WARN_ON(tzd == NULL); psy = tzd->devdata; - ret = psy->get_property(psy, POWER_SUPPLY_PROP_TEMP, &val); + ret = psy->desc->get_property(psy, POWER_SUPPLY_PROP_TEMP, &val); /* Convert tenths of degree Celsius to milli degree Celsius. */ if (!ret) @@ -459,14 +463,14 @@ static int psy_register_thermal(struct power_supply *psy) { int i; - if (psy->no_thermal) + if (psy->desc->no_thermal) return 0; /* Register battery zone device psy reports temperature */ - for (i = 0; i < psy->num_properties; i++) { - if (psy->properties[i] == POWER_SUPPLY_PROP_TEMP) { - psy->tzd = thermal_zone_device_register(psy->name, 0, 0, - psy, &psy_tzd_ops, NULL, 0, 0); + for (i = 0; i < psy->desc->num_properties; i++) { + if (psy->desc->properties[i] == POWER_SUPPLY_PROP_TEMP) { + psy->tzd = thermal_zone_device_register(psy->desc->name, + 0, 0, psy, &psy_tzd_ops, NULL, 0, 0); return PTR_ERR_OR_ZERO(psy->tzd); } } @@ -489,7 +493,7 @@ static int ps_get_max_charge_cntl_limit(struct thermal_cooling_device *tcd, int ret; psy = tcd->devdata; - ret = psy->get_property(psy, + ret = psy->desc->get_property(psy, POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX, &val); if (!ret) *state = val.intval; @@ -505,7 +509,7 @@ static int ps_get_cur_chrage_cntl_limit(struct thermal_cooling_device *tcd, int ret; psy = tcd->devdata; - ret = psy->get_property(psy, + ret = psy->desc->get_property(psy, POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT, &val); if (!ret) *state = val.intval; @@ -522,7 +526,7 @@ static int ps_set_cur_charge_cntl_limit(struct thermal_cooling_device *tcd, psy = tcd->devdata; val.intval = state; - ret = psy->set_property(psy, + ret = psy->desc->set_property(psy, POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT, &val); return ret; @@ -539,11 +543,11 @@ static int psy_register_cooler(struct power_supply *psy) int i; /* Register for cooling device if psy can control charging */ - for (i = 0; i < psy->num_properties; i++) { - if (psy->properties[i] == + for (i = 0; i < psy->desc->num_properties; i++) { + if (psy->desc->properties[i] == POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT) { psy->tcd = thermal_cooling_device_register( - (char *)psy->name, + (char *)psy->desc->name, psy, &psy_tcd_ops); return PTR_ERR_OR_ZERO(psy->tcd); } @@ -577,17 +581,21 @@ static void psy_unregister_cooler(struct power_supply *psy) } #endif -static int __power_supply_register(struct device *parent, - struct power_supply *psy, +static struct power_supply *__must_check +__power_supply_register(struct device *parent, + const struct power_supply_desc *desc, const struct power_supply_config *cfg, bool ws) { struct device *dev; + struct power_supply *psy; int rc; - dev = kzalloc(sizeof(*dev), GFP_KERNEL); - if (!dev) - return -ENOMEM; + psy = kzalloc(sizeof(*psy), GFP_KERNEL); + if (!psy) + return ERR_PTR(-ENOMEM); + + dev = &psy->dev; device_initialize(dev); @@ -596,7 +604,7 @@ static int __power_supply_register(struct device *parent, dev->parent = parent; dev->release = power_supply_dev_release; dev_set_drvdata(dev, psy); - psy->dev = dev; + psy->desc = desc; psy->use_cnt++; if (cfg) { psy->drv_data = cfg->drv_data; @@ -605,7 +613,7 @@ static int __power_supply_register(struct device *parent, psy->num_supplicants = cfg->num_supplicants; } - rc = dev_set_name(dev, "%s", psy->name); + rc = dev_set_name(dev, "%s", desc->name); if (rc) goto dev_set_name_failed; @@ -640,7 +648,7 @@ static int __power_supply_register(struct device *parent, power_supply_changed(psy); - return 0; + return psy; create_triggers_failed: psy_unregister_cooler(psy); @@ -653,20 +661,23 @@ wakeup_init_failed: check_supplies_failed: dev_set_name_failed: put_device(dev); - return rc; + return ERR_PTR(rc); } -int power_supply_register(struct device *parent, struct power_supply *psy, +struct power_supply *__must_check power_supply_register(struct device *parent, + const struct power_supply_desc *desc, const struct power_supply_config *cfg) { - return __power_supply_register(parent, psy, cfg, true); + return __power_supply_register(parent, desc, cfg, true); } EXPORT_SYMBOL_GPL(power_supply_register); -int power_supply_register_no_ws(struct device *parent, struct power_supply *psy, +struct power_supply *__must_check +power_supply_register_no_ws(struct device *parent, + const struct power_supply_desc *desc, const struct power_supply_config *cfg) { - return __power_supply_register(parent, psy, cfg, false); + return __power_supply_register(parent, desc, cfg, false); } EXPORT_SYMBOL_GPL(power_supply_register_no_ws); @@ -675,12 +686,12 @@ void power_supply_unregister(struct power_supply *psy) psy->use_cnt--; WARN_ON(psy->use_cnt); cancel_work_sync(&psy->changed_work); - sysfs_remove_link(&psy->dev->kobj, "powers"); + sysfs_remove_link(&psy->dev.kobj, "powers"); power_supply_remove_triggers(psy); psy_unregister_cooler(psy); psy_unregister_thermal(psy); - device_init_wakeup(psy->dev, false); - device_unregister(psy->dev); + device_init_wakeup(&psy->dev, false); + device_unregister(&psy->dev); } EXPORT_SYMBOL_GPL(power_supply_unregister); diff --git a/drivers/power/power_supply_leds.c b/drivers/power/power_supply_leds.c index effa093c37b0..2d41a43fc81a 100644 --- a/drivers/power/power_supply_leds.c +++ b/drivers/power/power_supply_leds.c @@ -25,10 +25,10 @@ static void power_supply_update_bat_leds(struct power_supply *psy) unsigned long delay_on = 0; unsigned long delay_off = 0; - if (psy->get_property(psy, POWER_SUPPLY_PROP_STATUS, &status)) + if (psy->desc->get_property(psy, POWER_SUPPLY_PROP_STATUS, &status)) return; - dev_dbg(psy->dev, "%s %d\n", __func__, status.intval); + dev_dbg(&psy->dev, "%s %d\n", __func__, status.intval); switch (status.intval) { case POWER_SUPPLY_STATUS_FULL: @@ -58,21 +58,21 @@ static void power_supply_update_bat_leds(struct power_supply *psy) static int power_supply_create_bat_triggers(struct power_supply *psy) { psy->charging_full_trig_name = kasprintf(GFP_KERNEL, - "%s-charging-or-full", psy->name); + "%s-charging-or-full", psy->desc->name); if (!psy->charging_full_trig_name) goto charging_full_failed; psy->charging_trig_name = kasprintf(GFP_KERNEL, - "%s-charging", psy->name); + "%s-charging", psy->desc->name); if (!psy->charging_trig_name) goto charging_failed; - psy->full_trig_name = kasprintf(GFP_KERNEL, "%s-full", psy->name); + psy->full_trig_name = kasprintf(GFP_KERNEL, "%s-full", psy->desc->name); if (!psy->full_trig_name) goto full_failed; psy->charging_blink_full_solid_trig_name = kasprintf(GFP_KERNEL, - "%s-charging-blink-full-solid", psy->name); + "%s-charging-blink-full-solid", psy->desc->name); if (!psy->charging_blink_full_solid_trig_name) goto charging_blink_full_solid_failed; @@ -115,10 +115,10 @@ static void power_supply_update_gen_leds(struct power_supply *psy) { union power_supply_propval online; - if (psy->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &online)) + if (psy->desc->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &online)) return; - dev_dbg(psy->dev, "%s %d\n", __func__, online.intval); + dev_dbg(&psy->dev, "%s %d\n", __func__, online.intval); if (online.intval) led_trigger_event(psy->online_trig, LED_FULL); @@ -128,7 +128,8 @@ static void power_supply_update_gen_leds(struct power_supply *psy) static int power_supply_create_gen_triggers(struct power_supply *psy) { - psy->online_trig_name = kasprintf(GFP_KERNEL, "%s-online", psy->name); + psy->online_trig_name = kasprintf(GFP_KERNEL, "%s-online", + psy->desc->name); if (!psy->online_trig_name) return -ENOMEM; @@ -147,7 +148,7 @@ static void power_supply_remove_gen_triggers(struct power_supply *psy) void power_supply_update_leds(struct power_supply *psy) { - if (psy->type == POWER_SUPPLY_TYPE_BATTERY) + if (psy->desc->type == POWER_SUPPLY_TYPE_BATTERY) power_supply_update_bat_leds(psy); else power_supply_update_gen_leds(psy); @@ -155,14 +156,14 @@ void power_supply_update_leds(struct power_supply *psy) int power_supply_create_triggers(struct power_supply *psy) { - if (psy->type == POWER_SUPPLY_TYPE_BATTERY) + if (psy->desc->type == POWER_SUPPLY_TYPE_BATTERY) return power_supply_create_bat_triggers(psy); return power_supply_create_gen_triggers(psy); } void power_supply_remove_triggers(struct power_supply *psy) { - if (psy->type == POWER_SUPPLY_TYPE_BATTERY) + if (psy->desc->type == POWER_SUPPLY_TYPE_BATTERY) power_supply_remove_bat_triggers(psy); else power_supply_remove_gen_triggers(psy); diff --git a/drivers/power/power_supply_sysfs.c b/drivers/power/power_supply_sysfs.c index f817aab80813..af026806cba5 100644 --- a/drivers/power/power_supply_sysfs.c +++ b/drivers/power/power_supply_sysfs.c @@ -74,7 +74,7 @@ static ssize_t power_supply_show_property(struct device *dev, union power_supply_propval value; if (off == POWER_SUPPLY_PROP_TYPE) { - value.intval = psy->type; + value.intval = psy->desc->type; } else { ret = power_supply_get_property(psy, off, &value); @@ -218,11 +218,11 @@ static umode_t power_supply_attr_is_visible(struct kobject *kobj, if (attrno == POWER_SUPPLY_PROP_TYPE) return mode; - for (i = 0; i < psy->num_properties; i++) { - int property = psy->properties[i]; + for (i = 0; i < psy->desc->num_properties; i++) { + int property = psy->desc->properties[i]; if (property == attrno) { - if (psy->property_is_writeable && + if (psy->desc->property_is_writeable && power_supply_property_is_writeable(psy, property) > 0) mode |= S_IWUSR; @@ -279,14 +279,14 @@ int power_supply_uevent(struct device *dev, struct kobj_uevent_env *env) dev_dbg(dev, "uevent\n"); - if (!psy || !psy->dev) { + if (!psy || !psy->desc) { dev_dbg(dev, "No power supply yet\n"); return ret; } - dev_dbg(dev, "POWER_SUPPLY_NAME=%s\n", psy->name); + dev_dbg(dev, "POWER_SUPPLY_NAME=%s\n", psy->desc->name); - ret = add_uevent_var(env, "POWER_SUPPLY_NAME=%s", psy->name); + ret = add_uevent_var(env, "POWER_SUPPLY_NAME=%s", psy->desc->name); if (ret) return ret; @@ -294,11 +294,11 @@ int power_supply_uevent(struct device *dev, struct kobj_uevent_env *env) if (!prop_buf) return -ENOMEM; - for (j = 0; j < psy->num_properties; j++) { + for (j = 0; j < psy->desc->num_properties; j++) { struct device_attribute *attr; char *line; - attr = &power_supply_attrs[psy->properties[j]]; + attr = &power_supply_attrs[psy->desc->properties[j]]; ret = power_supply_show_property(dev, attr, prop_buf); if (ret == -ENODEV || ret == -ENODATA) { diff --git a/drivers/power/sbs-battery.c b/drivers/power/sbs-battery.c index 879f1448fc4a..de1178659d4b 100644 --- a/drivers/power/sbs-battery.c +++ b/drivers/power/sbs-battery.c @@ -156,7 +156,7 @@ static enum power_supply_property sbs_properties[] = { struct sbs_info { struct i2c_client *client; - struct power_supply power_supply; + struct power_supply *power_supply; struct sbs_platform_data *pdata; bool is_present; bool gpio_detect; @@ -391,7 +391,7 @@ static int sbs_get_battery_property(struct i2c_client *client, chip->last_state = val->intval; else if (chip->last_state != val->intval) { cancel_delayed_work_sync(&chip->work); - power_supply_changed(&chip->power_supply); + power_supply_changed(chip->power_supply); chip->poll_time = 0; } } else { @@ -556,8 +556,7 @@ static int sbs_get_property(struct power_supply *psy, union power_supply_propval *val) { int ret = 0; - struct sbs_info *chip = container_of(psy, - struct sbs_info, power_supply); + struct sbs_info *chip = power_supply_get_drvdata(psy); struct i2c_client *client = chip->client; switch (psp) { @@ -638,7 +637,7 @@ static int sbs_get_property(struct power_supply *psy, if (!chip->gpio_detect && chip->is_present != (ret >= 0)) { chip->is_present = (ret >= 0); - power_supply_changed(&chip->power_supply); + power_supply_changed(chip->power_supply); } done: @@ -671,9 +670,7 @@ static irqreturn_t sbs_irq(int irq, void *devid) static void sbs_external_power_changed(struct power_supply *psy) { - struct sbs_info *chip; - - chip = container_of(psy, struct sbs_info, power_supply); + struct sbs_info *chip = power_supply_get_drvdata(psy); if (chip->ignore_changes > 0) { chip->ignore_changes--; @@ -712,7 +709,7 @@ static void sbs_delayed_work(struct work_struct *work) if (chip->last_state != ret) { chip->poll_time = 0; - power_supply_changed(&chip->power_supply); + power_supply_changed(chip->power_supply); return; } if (chip->poll_time > 0) { @@ -796,43 +793,48 @@ static struct sbs_platform_data *sbs_of_populate_pdata( } #endif +static const struct power_supply_desc sbs_default_desc = { + .type = POWER_SUPPLY_TYPE_BATTERY, + .properties = sbs_properties, + .num_properties = ARRAY_SIZE(sbs_properties), + .get_property = sbs_get_property, + .external_power_changed = sbs_external_power_changed, +}; + static int sbs_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct sbs_info *chip; + struct power_supply_desc *sbs_desc; struct sbs_platform_data *pdata = client->dev.platform_data; struct power_supply_config psy_cfg = {}; int rc; int irq; - char *name; - name = kasprintf(GFP_KERNEL, "sbs-%s", dev_name(&client->dev)); - if (!name) { - dev_err(&client->dev, "Failed to allocate device name\n"); + sbs_desc = devm_kmemdup(&client->dev, &sbs_default_desc, + sizeof(*sbs_desc), GFP_KERNEL); + if (!sbs_desc) + return -ENOMEM; + + sbs_desc->name = devm_kasprintf(&client->dev, GFP_KERNEL, "sbs-%s", + dev_name(&client->dev)); + if (!sbs_desc->name) return -ENOMEM; - } chip = kzalloc(sizeof(struct sbs_info), GFP_KERNEL); - if (!chip) { - rc = -ENOMEM; - goto exit_free_name; - } + if (!chip) + return -ENOMEM; chip->client = client; chip->enable_detection = false; chip->gpio_detect = false; - chip->power_supply.name = name; - chip->power_supply.type = POWER_SUPPLY_TYPE_BATTERY; - chip->power_supply.properties = sbs_properties; - chip->power_supply.num_properties = ARRAY_SIZE(sbs_properties); - chip->power_supply.get_property = sbs_get_property; psy_cfg.of_node = client->dev.of_node; + psy_cfg.drv_data = chip; /* ignore first notification of external change, it is generated * from the power_supply_register call back */ chip->ignore_changes = 1; chip->last_state = POWER_SUPPLY_STATUS_UNKNOWN; - chip->power_supply.external_power_changed = sbs_external_power_changed; pdata = sbs_of_populate_pdata(client); @@ -871,7 +873,7 @@ static int sbs_probe(struct i2c_client *client, rc = request_irq(irq, sbs_irq, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, - dev_name(&client->dev), &chip->power_supply); + dev_name(&client->dev), chip->power_supply); if (rc) { dev_warn(&client->dev, "Failed to request irq: %d\n", rc); gpio_free(pdata->battery_detect); @@ -893,11 +895,12 @@ skip_gpio: goto exit_psupply; } - rc = power_supply_register(&client->dev, &chip->power_supply, - &psy_cfg); - if (rc) { + chip->power_supply = power_supply_register(&client->dev, sbs_desc, + &psy_cfg); + if (IS_ERR(chip->power_supply)) { dev_err(&client->dev, "%s: Failed to register power supply\n", __func__); + rc = PTR_ERR(chip->power_supply); goto exit_psupply; } @@ -912,15 +915,12 @@ skip_gpio: exit_psupply: if (chip->irq) - free_irq(chip->irq, &chip->power_supply); + free_irq(chip->irq, chip->power_supply); if (chip->gpio_detect) gpio_free(pdata->battery_detect); kfree(chip); -exit_free_name: - kfree(name); - return rc; } @@ -929,15 +929,14 @@ static int sbs_remove(struct i2c_client *client) struct sbs_info *chip = i2c_get_clientdata(client); if (chip->irq) - free_irq(chip->irq, &chip->power_supply); + free_irq(chip->irq, chip->power_supply); if (chip->gpio_detect) gpio_free(chip->pdata->battery_detect); - power_supply_unregister(&chip->power_supply); + power_supply_unregister(chip->power_supply); cancel_delayed_work_sync(&chip->work); - kfree(chip->power_supply.name); kfree(chip); chip = NULL; diff --git a/drivers/power/tps65090-charger.c b/drivers/power/tps65090-charger.c index 37629affcd34..dcf9a3ca53d5 100644 --- a/drivers/power/tps65090-charger.c +++ b/drivers/power/tps65090-charger.c @@ -43,7 +43,7 @@ struct tps65090_charger { int irq; struct task_struct *poll_task; bool passive_mode; - struct power_supply ac; + struct power_supply *ac; struct tps65090_platform_data *pdata; }; @@ -135,8 +135,7 @@ static int tps65090_ac_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { - struct tps65090_charger *charger = container_of(psy, - struct tps65090_charger, ac); + struct tps65090_charger *charger = power_supply_get_drvdata(psy); if (psp == POWER_SUPPLY_PROP_ONLINE) { val->intval = charger->ac_online; @@ -190,7 +189,7 @@ static irqreturn_t tps65090_charger_isr(int irq, void *dev_id) } if (charger->prev_ac_online != charger->ac_online) - power_supply_changed(&charger->ac); + power_supply_changed(charger->ac); return IRQ_HANDLED; } @@ -229,10 +228,19 @@ static int tps65090_charger_poll_task(void *data) return 0; } +static const struct power_supply_desc tps65090_charger_desc = { + .name = "tps65090-ac", + .type = POWER_SUPPLY_TYPE_MAINS, + .get_property = tps65090_ac_get_property, + .properties = tps65090_ac_props, + .num_properties = ARRAY_SIZE(tps65090_ac_props), +}; + static int tps65090_charger_probe(struct platform_device *pdev) { struct tps65090_charger *cdata; struct tps65090_platform_data *pdata; + struct power_supply_config psy_cfg = {}; uint8_t status1 = 0; int ret; int irq; @@ -259,19 +267,16 @@ static int tps65090_charger_probe(struct platform_device *pdev) cdata->dev = &pdev->dev; cdata->pdata = pdata; - cdata->ac.name = "tps65090-ac"; - cdata->ac.type = POWER_SUPPLY_TYPE_MAINS; - cdata->ac.get_property = tps65090_ac_get_property; - cdata->ac.properties = tps65090_ac_props; - cdata->ac.num_properties = ARRAY_SIZE(tps65090_ac_props); - cdata->ac.supplied_to = pdata->supplied_to; - cdata->ac.num_supplicants = pdata->num_supplicants; - cdata->ac.of_node = pdev->dev.of_node; - - ret = power_supply_register(&pdev->dev, &cdata->ac, NULL); - if (ret) { + psy_cfg.supplied_to = pdata->supplied_to; + psy_cfg.num_supplicants = pdata->num_supplicants; + psy_cfg.of_node = pdev->dev.of_node; + psy_cfg.drv_data = cdata; + + cdata->ac = power_supply_register(&pdev->dev, &tps65090_charger_desc, + &psy_cfg); + if (IS_ERR(cdata->ac)) { dev_err(&pdev->dev, "failed: power supply register\n"); - return ret; + return PTR_ERR(cdata->ac); } irq = platform_get_irq(pdev, 0); @@ -301,7 +306,7 @@ static int tps65090_charger_probe(struct platform_device *pdev) goto fail_unregister_supply; } cdata->ac_online = 1; - power_supply_changed(&cdata->ac); + power_supply_changed(cdata->ac); } if (irq != -ENXIO) { @@ -328,7 +333,7 @@ static int tps65090_charger_probe(struct platform_device *pdev) return 0; fail_unregister_supply: - power_supply_unregister(&cdata->ac); + power_supply_unregister(cdata->ac); return ret; } @@ -339,7 +344,7 @@ static int tps65090_charger_remove(struct platform_device *pdev) if (cdata->irq == -ENXIO) kthread_stop(cdata->poll_task); - power_supply_unregister(&cdata->ac); + power_supply_unregister(cdata->ac); return 0; } diff --git a/include/linux/power/charger-manager.h b/include/linux/power/charger-manager.h index e97fc656a058..bde1a24b1f16 100644 --- a/include/linux/power/charger-manager.h +++ b/include/linux/power/charger-manager.h @@ -264,7 +264,8 @@ struct charger_manager { int emergency_stop; char psy_name_buf[PSY_NAME_MAX + 1]; - struct power_supply charger_psy; + struct power_supply_desc charger_psy_desc; + struct power_supply *charger_psy; bool status_save_ext_pwr_inserted; bool status_save_batt; diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index c2c17ac3a608..4afbba073c4a 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -13,6 +13,7 @@ #ifndef __LINUX_POWER_SUPPLY_H__ #define __LINUX_POWER_SUPPLY_H__ +#include #include #include #include @@ -173,10 +174,10 @@ union power_supply_propval { const char *strval; }; -struct device; struct device_node; +struct power_supply; -/* Power supply instance specific configuration */ +/* Run-time specific power supply configuration */ struct power_supply_config { struct device_node *of_node; /* Driver private data */ @@ -186,19 +187,13 @@ struct power_supply_config { size_t num_supplicants; }; -struct power_supply { +/* Description of power supply */ +struct power_supply_desc { const char *name; enum power_supply_type type; enum power_supply_property *properties; size_t num_properties; - char **supplied_to; - size_t num_supplicants; - - char **supplied_from; - size_t num_supplies; - struct device_node *of_node; - /* * Functions for drivers implementing power supply class. * These shouldn't be called directly by other drivers for accessing @@ -224,12 +219,23 @@ struct power_supply { bool no_thermal; /* For APM emulation, think legacy userspace. */ int use_for_apm; +}; + +struct power_supply { + const struct power_supply_desc *desc; + + char **supplied_to; + size_t num_supplicants; + + char **supplied_from; + size_t num_supplies; + struct device_node *of_node; /* Driver private data */ void *drv_data; /* private */ - struct device *dev; + struct device dev; struct work_struct changed_work; spinlock_t changed_lock; bool changed; @@ -303,11 +309,14 @@ extern int power_supply_set_property(struct power_supply *psy, extern int power_supply_property_is_writeable(struct power_supply *psy, enum power_supply_property psp); extern void power_supply_external_power_changed(struct power_supply *psy); -extern int power_supply_register(struct device *parent, - struct power_supply *psy, + +extern struct power_supply *__must_check +power_supply_register(struct device *parent, + const struct power_supply_desc *desc, const struct power_supply_config *cfg); -extern int power_supply_register_no_ws(struct device *parent, - struct power_supply *psy, +extern struct power_supply *__must_check +power_supply_register_no_ws(struct device *parent, + const struct power_supply_desc *desc, const struct power_supply_config *cfg); extern void power_supply_unregister(struct power_supply *psy); extern int power_supply_powers(struct power_supply *psy, struct device *dev);