From 077d9951f7c9ef5845fdcf4363d3a4630d142e4f Mon Sep 17 00:00:00 2001 From: Martin Schiller Date: Fri, 8 Mar 2019 08:49:30 +0100 Subject: power: reset: syscon-reboot: add a mask property Make the syscon-reboot driver accept value and mask instead of just value. Prior to this patch, the property name for the value was 'mask'. If only the mask property is defined on a node, maintain compatibility by using it as the value. This patch is based on commit f2c199db477e ("power: reset: syscon-poweroff: add a mask property") and does the same change for the syscon-reboot driver. Signed-off-by: Martin Schiller Acked-by: Rob Herring Signed-off-by: Sebastian Reichel --- drivers/power/reset/syscon-reboot.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/reset/syscon-reboot.c b/drivers/power/reset/syscon-reboot.c index 7d0d269a0837..5a6bb638c331 100644 --- a/drivers/power/reset/syscon-reboot.c +++ b/drivers/power/reset/syscon-reboot.c @@ -27,6 +27,7 @@ struct syscon_reboot_context { struct regmap *map; u32 offset; + u32 value; u32 mask; struct notifier_block restart_handler; }; @@ -39,7 +40,7 @@ static int syscon_restart_handle(struct notifier_block *this, restart_handler); /* Issue the reboot */ - regmap_write(ctx->map, ctx->offset, ctx->mask); + regmap_update_bits(ctx->map, ctx->offset, ctx->mask, ctx->value); mdelay(1000); @@ -51,6 +52,7 @@ static int syscon_reboot_probe(struct platform_device *pdev) { struct syscon_reboot_context *ctx; struct device *dev = &pdev->dev; + int mask_err, value_err; int err; ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL); @@ -64,8 +66,21 @@ static int syscon_reboot_probe(struct platform_device *pdev) if (of_property_read_u32(pdev->dev.of_node, "offset", &ctx->offset)) return -EINVAL; - if (of_property_read_u32(pdev->dev.of_node, "mask", &ctx->mask)) + value_err = of_property_read_u32(pdev->dev.of_node, "value", &ctx->value); + mask_err = of_property_read_u32(pdev->dev.of_node, "mask", &ctx->mask); + if (value_err && mask_err) { + dev_err(dev, "unable to read 'value' and 'mask'"); return -EINVAL; + } + + if (value_err) { + /* support old binding */ + ctx->value = ctx->mask; + ctx->mask = 0xFFFFFFFF; + } else if (mask_err) { + /* support value without mask*/ + ctx->mask = 0xFFFFFFFF; + } ctx->restart_handler.notifier_call = syscon_restart_handle; ctx->restart_handler.priority = 192; -- cgit v1.2.3 From 75cf4f5aa903604e1bd7bec2c0988d643c6fb946 Mon Sep 17 00:00:00 2001 From: Kangjie Lu Date: Thu, 14 Mar 2019 01:02:47 -0500 Subject: power: charger-manager: fix a potential NULL pointer dereference In case create_freezable_workqueue fails, the fix return -ENOMEM to avoid a potential NULL pointer dereference. Signed-off-by: Kangjie Lu Signed-off-by: Sebastian Reichel --- drivers/power/supply/charger-manager.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/power') diff --git a/drivers/power/supply/charger-manager.c b/drivers/power/supply/charger-manager.c index 2e8db5e6de0b..a6900aa0d2ed 100644 --- a/drivers/power/supply/charger-manager.c +++ b/drivers/power/supply/charger-manager.c @@ -1987,6 +1987,9 @@ static struct platform_driver charger_manager_driver = { static int __init charger_manager_init(void) { cm_wq = create_freezable_workqueue("charger_manager"); + if (unlikely(!cm_wq)) + return -ENOMEM; + INIT_DELAYED_WORK(&cm_monitor_work, cm_monitor_poller); return platform_driver_register(&charger_manager_driver); -- cgit v1.2.3 From f0459fe14713081294b18bf1243f8de459814131 Mon Sep 17 00:00:00 2001 From: Maxime Ripard Date: Mon, 18 Mar 2019 14:36:29 +0100 Subject: power: supply: Fix the simple battery property names Commit c08b1f45d7d1 ("power: supply: core: Add power_supply_battery_info and API") introduced code to parse the simple-battery node and express battery charging constraints. However, it parsed that node using the properties constant_charge_current_max_microamp and constant_charge_voltage_max_microvolt, while the device tree binding for the simple-battery node uses dashes to separate the words in those properties (constant-charge-current-max-microamp and constant-charge-voltage-max-microvolt). Let's make the code match the binding. Fixes: c08b1f45d7d1 ("power: supply: core: Add power_supply_battery_info and API") Signed-off-by: Maxime Ripard Signed-off-by: Sebastian Reichel --- drivers/power/supply/power_supply_core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/supply/power_supply_core.c index c917a8b43b2b..ae9c9d1d437c 100644 --- a/drivers/power/supply/power_supply_core.c +++ b/drivers/power/supply/power_supply_core.c @@ -620,9 +620,9 @@ int power_supply_get_battery_info(struct power_supply *psy, &info->precharge_current_ua); of_property_read_u32(battery_np, "charge-term-current-microamp", &info->charge_term_current_ua); - of_property_read_u32(battery_np, "constant_charge_current_max_microamp", + of_property_read_u32(battery_np, "constant-charge-current-max-microamp", &info->constant_charge_current_max_ua); - of_property_read_u32(battery_np, "constant_charge_voltage_max_microvolt", + of_property_read_u32(battery_np, "constant-charge-voltage-max-microvolt", &info->constant_charge_voltage_max_uv); of_property_read_u32(battery_np, "factory-internal-resistance-micro-ohms", &info->factory_internal_resistance_uohm); -- cgit v1.2.3 From c3422ad5f84a66739ec6a37251ca27638c85b6be Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Mon, 18 Mar 2019 11:14:39 -0500 Subject: power: supply: axp288_charger: Fix unchecked return value Currently there is no check on platform_get_irq() return value in case it fails, hence never actually reporting any errors and causing unexpected behavior when using such value as argument for function regmap_irq_get_virq(). Fix this by adding a proper check, a message reporting any errors and returning *pirq* Addresses-Coverity-ID: 1443940 ("Improper use of negative value") Fixes: 843735b788a4 ("power: axp288_charger: axp288 charger driver") Cc: stable@vger.kernel.org Signed-off-by: Gustavo A. R. Silva Reviewed-by: Hans de Goede Signed-off-by: Sebastian Reichel --- drivers/power/supply/axp288_charger.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/power') diff --git a/drivers/power/supply/axp288_charger.c b/drivers/power/supply/axp288_charger.c index f8c6da9277b3..00b961890a38 100644 --- a/drivers/power/supply/axp288_charger.c +++ b/drivers/power/supply/axp288_charger.c @@ -833,6 +833,10 @@ static int axp288_charger_probe(struct platform_device *pdev) /* Register charger interrupts */ for (i = 0; i < CHRG_INTR_END; i++) { pirq = platform_get_irq(info->pdev, i); + if (pirq < 0) { + dev_err(&pdev->dev, "Failed to get IRQ: %d\n", pirq); + return pirq; + } info->irq[i] = regmap_irq_get_virq(info->regmap_irqc, pirq); if (info->irq[i] < 0) { dev_warn(&info->pdev->dev, -- cgit v1.2.3 From 5c6c513ddbc702b11ceef1e881d95a061f6b854f Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Thu, 21 Feb 2019 13:45:48 +0000 Subject: power: reset: at91-poweroff: add RTT wakeup capability Add RTT wakeup capability. Signed-off-by: Claudiu Beznea Acked-by: Nicolas Ferre Signed-off-by: Sebastian Reichel --- drivers/power/reset/at91-sama5d2_shdwc.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'drivers/power') diff --git a/drivers/power/reset/at91-sama5d2_shdwc.c b/drivers/power/reset/at91-sama5d2_shdwc.c index 2b686c55b717..0747e0cdf350 100644 --- a/drivers/power/reset/at91-sama5d2_shdwc.c +++ b/drivers/power/reset/at91-sama5d2_shdwc.c @@ -57,15 +57,21 @@ #define SHDW_WK_PIN(reg, cfg) ((reg) & AT91_SHDW_WKUPIS((cfg)->wkup_pin_input)) #define SHDW_RTCWK(reg, cfg) (((reg) >> ((cfg)->sr_rtcwk_shift)) & 0x1) +#define SHDW_RTTWK(reg, cfg) (((reg) >> ((cfg)->sr_rttwk_shift)) & 0x1) #define SHDW_RTCWKEN(cfg) (1 << ((cfg)->mr_rtcwk_shift)) +#define SHDW_RTTWKEN(cfg) (1 << ((cfg)->mr_rttwk_shift)) #define DBC_PERIOD_US(x) DIV_ROUND_UP_ULL((1000000 * (x)), \ SLOW_CLOCK_FREQ) +#define SHDW_CFG_NOT_USED (32) + struct shdwc_config { u8 wkup_pin_input; u8 mr_rtcwk_shift; + u8 mr_rttwk_shift; u8 sr_rtcwk_shift; + u8 sr_rttwk_shift; }; struct shdwc { @@ -104,6 +110,8 @@ static void __init at91_wakeup_status(struct platform_device *pdev) reason = "WKUP pin"; else if (SHDW_RTCWK(reg, shdw->cfg)) reason = "RTC"; + else if (SHDW_RTTWK(reg, shdw->cfg)) + reason = "RTT"; pr_info("AT91: Wake-Up source: %s\n", reason); } @@ -221,6 +229,9 @@ static void at91_shdwc_dt_configure(struct platform_device *pdev) if (of_property_read_bool(np, "atmel,wakeup-rtc-timer")) mode |= SHDW_RTCWKEN(shdw->cfg); + if (of_property_read_bool(np, "atmel,wakeup-rtt-timer")) + mode |= SHDW_RTTWKEN(shdw->cfg); + dev_dbg(&pdev->dev, "%s: mode = %#x\n", __func__, mode); writel(mode, shdw->shdwc_base + AT91_SHDW_MR); @@ -231,7 +242,10 @@ static void at91_shdwc_dt_configure(struct platform_device *pdev) static const struct shdwc_config sama5d2_shdwc_config = { .wkup_pin_input = 0, .mr_rtcwk_shift = 17, + .mr_rttwk_shift = SHDW_CFG_NOT_USED, .sr_rtcwk_shift = 5, + .sr_rttwk_shift = SHDW_CFG_NOT_USED, +}; }; static const struct of_device_id at91_shdwc_of_match[] = { -- cgit v1.2.3 From 17d2e876b49771f2fb6e6ad73e6dd53f888fa34c Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Thu, 21 Feb 2019 13:45:51 +0000 Subject: power: reset: at91-poweroff: add support for SAM9X60 Add support for SAM9X60 shutdown controller. Signed-off-by: Claudiu Beznea Acked-by: Nicolas Ferre Signed-off-by: Sebastian Reichel --- drivers/power/reset/at91-sama5d2_shdwc.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'drivers/power') diff --git a/drivers/power/reset/at91-sama5d2_shdwc.c b/drivers/power/reset/at91-sama5d2_shdwc.c index 0747e0cdf350..e341cc5c0ea6 100644 --- a/drivers/power/reset/at91-sama5d2_shdwc.c +++ b/drivers/power/reset/at91-sama5d2_shdwc.c @@ -246,12 +246,23 @@ static const struct shdwc_config sama5d2_shdwc_config = { .sr_rtcwk_shift = 5, .sr_rttwk_shift = SHDW_CFG_NOT_USED, }; + +static const struct shdwc_config sam9x60_shdwc_config = { + .wkup_pin_input = 0, + .mr_rtcwk_shift = 17, + .mr_rttwk_shift = 16, + .sr_rtcwk_shift = 5, + .sr_rttwk_shift = 4, }; static const struct of_device_id at91_shdwc_of_match[] = { { .compatible = "atmel,sama5d2-shdwc", .data = &sama5d2_shdwc_config, + }, + { + .compatible = "microchip,sam9x60-shdwc", + .data = &sam9x60_shdwc_config, }, { /*sentinel*/ } -- cgit v1.2.3 From 0cd0e49711556d2331a06b1117b68dd786cb54d2 Mon Sep 17 00:00:00 2001 From: Sven Van Asbroeck Date: Fri, 15 Feb 2019 16:43:02 -0500 Subject: power: supply: max14656: fix potential use-before-alloc Call order on probe(): - max14656_hw_init() enables interrupts on the chip - devm_request_irq() starts processing interrupts, isr could be called immediately - isr: schedules delayed work (irq_work) - irq_work: calls power_supply_changed() - devm_power_supply_register() registers the power supply Depending on timing, it's possible that power_supply_changed() is called on an unregistered power supply structure. Fix by registering the power supply before requesting the irq. Cc: Alexander Kurz Signed-off-by: Sven Van Asbroeck Signed-off-by: Sebastian Reichel --- drivers/power/supply/max14656_charger_detector.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/max14656_charger_detector.c b/drivers/power/supply/max14656_charger_detector.c index b91b1d2999dc..d19307f791c6 100644 --- a/drivers/power/supply/max14656_charger_detector.c +++ b/drivers/power/supply/max14656_charger_detector.c @@ -280,6 +280,13 @@ static int max14656_probe(struct i2c_client *client, INIT_DELAYED_WORK(&chip->irq_work, max14656_irq_worker); + chip->detect_psy = devm_power_supply_register(dev, + &chip->psy_desc, &psy_cfg); + if (IS_ERR(chip->detect_psy)) { + dev_err(dev, "power_supply_register failed\n"); + return -EINVAL; + } + ret = devm_request_irq(dev, chip->irq, max14656_irq, IRQF_TRIGGER_FALLING, MAX14656_NAME, chip); @@ -289,13 +296,6 @@ static int max14656_probe(struct i2c_client *client, } enable_irq_wake(chip->irq); - chip->detect_psy = devm_power_supply_register(dev, - &chip->psy_desc, &psy_cfg); - if (IS_ERR(chip->detect_psy)) { - dev_err(dev, "power_supply_register failed\n"); - return -EINVAL; - } - schedule_delayed_work(&chip->irq_work, msecs_to_jiffies(2000)); return 0; -- cgit v1.2.3 From 252fbeb86ceffa549af9842cefca2412d53a7653 Mon Sep 17 00:00:00 2001 From: Sven Van Asbroeck Date: Fri, 15 Feb 2019 16:43:03 -0500 Subject: power: supply: max14656: fix potential use-after-free Explicitly cancel/sync the irq_work delayed work, otherwise there's a chance that it will run after the device is removed, which would result in a use-after-free. Note that cancel/sync should happen: - after irq's have been disabled, as the isr re-schedules the work - before the power supply is unregistered, because the work func uses the power supply handle. Cc: Alexander Kurz Signed-off-by: Sven Van Asbroeck Signed-off-by: Sebastian Reichel --- drivers/power/supply/max14656_charger_detector.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/max14656_charger_detector.c b/drivers/power/supply/max14656_charger_detector.c index d19307f791c6..9e6472834e37 100644 --- a/drivers/power/supply/max14656_charger_detector.c +++ b/drivers/power/supply/max14656_charger_detector.c @@ -240,6 +240,14 @@ static enum power_supply_property max14656_battery_props[] = { POWER_SUPPLY_PROP_MANUFACTURER, }; +static void stop_irq_work(void *data) +{ + struct max14656_chip *chip = data; + + cancel_delayed_work_sync(&chip->irq_work); +} + + static int max14656_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -278,8 +286,6 @@ static int max14656_probe(struct i2c_client *client, if (ret) return -ENODEV; - INIT_DELAYED_WORK(&chip->irq_work, max14656_irq_worker); - chip->detect_psy = devm_power_supply_register(dev, &chip->psy_desc, &psy_cfg); if (IS_ERR(chip->detect_psy)) { @@ -287,6 +293,13 @@ static int max14656_probe(struct i2c_client *client, return -EINVAL; } + INIT_DELAYED_WORK(&chip->irq_work, max14656_irq_worker); + ret = devm_add_action(dev, stop_irq_work, chip); + if (ret) { + dev_err(dev, "devm_add_action %d failed\n", ret); + return ret; + } + ret = devm_request_irq(dev, chip->irq, max14656_irq, IRQF_TRIGGER_FALLING, MAX14656_NAME, chip); -- cgit v1.2.3 From 2e220e6eb3ce97af898046a78725715b6898fe23 Mon Sep 17 00:00:00 2001 From: Michael Hennerich Date: Tue, 9 Apr 2019 08:24:40 +0200 Subject: power: supply: ltc3651-charger: Fix device name There never was a device called LTC3651, it always was just LT3651. This circumstance makes it pretty difficult to identify what this driver is meant to control.channges since Signed-off-by: Michael Hennerich Signed-off-by: Sebastian Reichel --- .../bindings/power/supply/ltc3651-charger.txt | 10 +- drivers/power/supply/Kconfig | 8 +- drivers/power/supply/Makefile | 2 +- drivers/power/supply/ltc3651-charger.c | 123 ++++++++++----------- 4 files changed, 71 insertions(+), 72 deletions(-) (limited to 'drivers/power') diff --git a/Documentation/devicetree/bindings/power/supply/ltc3651-charger.txt b/Documentation/devicetree/bindings/power/supply/ltc3651-charger.txt index 71f2840e8209..40811ff8de10 100644 --- a/Documentation/devicetree/bindings/power/supply/ltc3651-charger.txt +++ b/Documentation/devicetree/bindings/power/supply/ltc3651-charger.txt @@ -1,14 +1,16 @@ -ltc3651-charger +Analog Devices LT3651 Charger Power Supply bindings: lt3651-charger Required properties: - - compatible: "lltc,ltc3651-charger" +- compatible: Should contain one of the following: + * "lltc,ltc3651-charger", (DEPRECATED: Use "lltc,lt3651-charger") + * "lltc,lt3651-charger" - lltc,acpr-gpios: Connect to ACPR output. See remark below. Optional properties: - lltc,fault-gpios: Connect to FAULT output. See remark below. - lltc,chrg-gpios: Connect to CHRG output. See remark below. -The ltc3651 outputs are open-drain type and active low. The driver assumes the +The lt3651 outputs are open-drain type and active low. The driver assumes the GPIO reports "active" when the output is asserted, so if the pins have been connected directly, the GPIO flags should be set to active low also. @@ -20,7 +22,7 @@ attributes to detect changes. Example: charger: battery-charger { - compatible = "lltc,ltc3651-charger"; + compatible = "lltc,lt3651-charger"; lltc,acpr-gpios = <&gpio0 68 GPIO_ACTIVE_LOW>; lltc,fault-gpios = <&gpio0 64 GPIO_ACTIVE_LOW>; lltc,chrg-gpios = <&gpio0 63 GPIO_ACTIVE_LOW>; diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig index e901b9879e7e..e907521a7166 100644 --- a/drivers/power/supply/Kconfig +++ b/drivers/power/supply/Kconfig @@ -475,12 +475,12 @@ config CHARGER_MANAGER runtime and in suspend-to-RAM by waking up the system periodically with help of suspend_again support. -config CHARGER_LTC3651 - tristate "LTC3651 charger" +config CHARGER_LT3651 + tristate "Analog Devices LT3651 charger" depends on GPIOLIB help - Say Y to include support for the LTC3651 battery charger which reports - its status via GPIO lines. + Say Y to include support for the Analog Devices (Linear Technology) + LT3651 battery charger which reports its status via GPIO lines. config CHARGER_MAX14577 tristate "Maxim MAX14577/77836 battery charger driver" diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile index b731c2a9b695..714c6029cff7 100644 --- a/drivers/power/supply/Makefile +++ b/drivers/power/supply/Makefile @@ -67,7 +67,7 @@ obj-$(CONFIG_CHARGER_LP8727) += lp8727_charger.o obj-$(CONFIG_CHARGER_LP8788) += lp8788-charger.o obj-$(CONFIG_CHARGER_GPIO) += gpio-charger.o obj-$(CONFIG_CHARGER_MANAGER) += charger-manager.o -obj-$(CONFIG_CHARGER_LTC3651) += ltc3651-charger.o +obj-$(CONFIG_CHARGER_LT3651) += ltc3651-charger.o obj-$(CONFIG_CHARGER_MAX14577) += max14577_charger.o obj-$(CONFIG_CHARGER_DETECTOR_MAX14656) += max14656_charger_detector.o obj-$(CONFIG_CHARGER_MAX77693) += max77693_charger.o diff --git a/drivers/power/supply/ltc3651-charger.c b/drivers/power/supply/ltc3651-charger.c index eea63ff211c4..8de500ffad95 100644 --- a/drivers/power/supply/ltc3651-charger.c +++ b/drivers/power/supply/ltc3651-charger.c @@ -1,11 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0+ /* + * Driver for Analog Devices (Linear Technology) LT3651 charger IC. * Copyright (C) 2017, Topic Embedded Products - * Driver for LTC3651 charger IC. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. */ #include @@ -19,7 +15,7 @@ #include #include -struct ltc3651_charger { +struct lt3651_charger { struct power_supply *charger; struct power_supply_desc charger_desc; struct gpio_desc *acpr_gpio; @@ -27,7 +23,7 @@ struct ltc3651_charger { struct gpio_desc *chrg_gpio; }; -static irqreturn_t ltc3651_charger_irq(int irq, void *devid) +static irqreturn_t lt3651_charger_irq(int irq, void *devid) { struct power_supply *charger = devid; @@ -36,37 +32,37 @@ static irqreturn_t ltc3651_charger_irq(int irq, void *devid) return IRQ_HANDLED; } -static inline struct ltc3651_charger *psy_to_ltc3651_charger( +static inline struct lt3651_charger *psy_to_lt3651_charger( struct power_supply *psy) { return power_supply_get_drvdata(psy); } -static int ltc3651_charger_get_property(struct power_supply *psy, +static int lt3651_charger_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { - struct ltc3651_charger *ltc3651_charger = psy_to_ltc3651_charger(psy); + struct lt3651_charger *lt3651_charger = psy_to_lt3651_charger(psy); switch (psp) { case POWER_SUPPLY_PROP_STATUS: - if (!ltc3651_charger->chrg_gpio) { + if (!lt3651_charger->chrg_gpio) { val->intval = POWER_SUPPLY_STATUS_UNKNOWN; break; } - if (gpiod_get_value(ltc3651_charger->chrg_gpio)) + if (gpiod_get_value(lt3651_charger->chrg_gpio)) val->intval = POWER_SUPPLY_STATUS_CHARGING; else val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; break; case POWER_SUPPLY_PROP_ONLINE: - val->intval = gpiod_get_value(ltc3651_charger->acpr_gpio); + val->intval = gpiod_get_value(lt3651_charger->acpr_gpio); break; case POWER_SUPPLY_PROP_HEALTH: - if (!ltc3651_charger->fault_gpio) { + if (!lt3651_charger->fault_gpio) { val->intval = POWER_SUPPLY_HEALTH_UNKNOWN; break; } - if (!gpiod_get_value(ltc3651_charger->fault_gpio)) { + if (!gpiod_get_value(lt3651_charger->fault_gpio)) { val->intval = POWER_SUPPLY_HEALTH_GOOD; break; } @@ -74,11 +70,11 @@ static int ltc3651_charger_get_property(struct power_supply *psy, * If the fault pin is active, the chrg pin explains the type * of failure. */ - if (!ltc3651_charger->chrg_gpio) { + if (!lt3651_charger->chrg_gpio) { val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; break; } - val->intval = gpiod_get_value(ltc3651_charger->chrg_gpio) ? + val->intval = gpiod_get_value(lt3651_charger->chrg_gpio) ? POWER_SUPPLY_HEALTH_OVERHEAT : POWER_SUPPLY_HEALTH_DEAD; break; @@ -89,59 +85,59 @@ static int ltc3651_charger_get_property(struct power_supply *psy, return 0; } -static enum power_supply_property ltc3651_charger_properties[] = { +static enum power_supply_property lt3651_charger_properties[] = { POWER_SUPPLY_PROP_STATUS, POWER_SUPPLY_PROP_ONLINE, POWER_SUPPLY_PROP_HEALTH, }; -static int ltc3651_charger_probe(struct platform_device *pdev) +static int lt3651_charger_probe(struct platform_device *pdev) { struct power_supply_config psy_cfg = {}; - struct ltc3651_charger *ltc3651_charger; + struct lt3651_charger *lt3651_charger; struct power_supply_desc *charger_desc; int ret; - ltc3651_charger = devm_kzalloc(&pdev->dev, sizeof(*ltc3651_charger), + lt3651_charger = devm_kzalloc(&pdev->dev, sizeof(*lt3651_charger), GFP_KERNEL); - if (!ltc3651_charger) + if (!lt3651_charger) return -ENOMEM; - ltc3651_charger->acpr_gpio = devm_gpiod_get(&pdev->dev, + lt3651_charger->acpr_gpio = devm_gpiod_get(&pdev->dev, "lltc,acpr", GPIOD_IN); - if (IS_ERR(ltc3651_charger->acpr_gpio)) { - ret = PTR_ERR(ltc3651_charger->acpr_gpio); + if (IS_ERR(lt3651_charger->acpr_gpio)) { + ret = PTR_ERR(lt3651_charger->acpr_gpio); dev_err(&pdev->dev, "Failed to acquire acpr GPIO: %d\n", ret); return ret; } - ltc3651_charger->fault_gpio = devm_gpiod_get_optional(&pdev->dev, + lt3651_charger->fault_gpio = devm_gpiod_get_optional(&pdev->dev, "lltc,fault", GPIOD_IN); - if (IS_ERR(ltc3651_charger->fault_gpio)) { - ret = PTR_ERR(ltc3651_charger->fault_gpio); + if (IS_ERR(lt3651_charger->fault_gpio)) { + ret = PTR_ERR(lt3651_charger->fault_gpio); dev_err(&pdev->dev, "Failed to acquire fault GPIO: %d\n", ret); return ret; } - ltc3651_charger->chrg_gpio = devm_gpiod_get_optional(&pdev->dev, + lt3651_charger->chrg_gpio = devm_gpiod_get_optional(&pdev->dev, "lltc,chrg", GPIOD_IN); - if (IS_ERR(ltc3651_charger->chrg_gpio)) { - ret = PTR_ERR(ltc3651_charger->chrg_gpio); + if (IS_ERR(lt3651_charger->chrg_gpio)) { + ret = PTR_ERR(lt3651_charger->chrg_gpio); dev_err(&pdev->dev, "Failed to acquire chrg GPIO: %d\n", ret); return ret; } - charger_desc = <c3651_charger->charger_desc; + charger_desc = <3651_charger->charger_desc; charger_desc->name = pdev->dev.of_node->name; charger_desc->type = POWER_SUPPLY_TYPE_MAINS; - charger_desc->properties = ltc3651_charger_properties; - charger_desc->num_properties = ARRAY_SIZE(ltc3651_charger_properties); - charger_desc->get_property = ltc3651_charger_get_property; + charger_desc->properties = lt3651_charger_properties; + charger_desc->num_properties = ARRAY_SIZE(lt3651_charger_properties); + charger_desc->get_property = lt3651_charger_get_property; psy_cfg.of_node = pdev->dev.of_node; - psy_cfg.drv_data = ltc3651_charger; + psy_cfg.drv_data = lt3651_charger; - ltc3651_charger->charger = devm_power_supply_register(&pdev->dev, + lt3651_charger->charger = devm_power_supply_register(&pdev->dev, charger_desc, &psy_cfg); - if (IS_ERR(ltc3651_charger->charger)) { - ret = PTR_ERR(ltc3651_charger->charger); + if (IS_ERR(lt3651_charger->charger)) { + ret = PTR_ERR(lt3651_charger->charger); dev_err(&pdev->dev, "Failed to register power supply: %d\n", ret); return ret; @@ -152,59 +148,60 @@ static int ltc3651_charger_probe(struct platform_device *pdev) * support IRQs on these pins, userspace will have to poll the sysfs * files manually. */ - if (ltc3651_charger->acpr_gpio) { - ret = gpiod_to_irq(ltc3651_charger->acpr_gpio); + if (lt3651_charger->acpr_gpio) { + ret = gpiod_to_irq(lt3651_charger->acpr_gpio); if (ret >= 0) ret = devm_request_any_context_irq(&pdev->dev, ret, - ltc3651_charger_irq, + lt3651_charger_irq, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, - dev_name(&pdev->dev), ltc3651_charger->charger); + dev_name(&pdev->dev), lt3651_charger->charger); if (ret < 0) dev_warn(&pdev->dev, "Failed to request acpr irq\n"); } - if (ltc3651_charger->fault_gpio) { - ret = gpiod_to_irq(ltc3651_charger->fault_gpio); + if (lt3651_charger->fault_gpio) { + ret = gpiod_to_irq(lt3651_charger->fault_gpio); if (ret >= 0) ret = devm_request_any_context_irq(&pdev->dev, ret, - ltc3651_charger_irq, + lt3651_charger_irq, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, - dev_name(&pdev->dev), ltc3651_charger->charger); + dev_name(&pdev->dev), lt3651_charger->charger); if (ret < 0) dev_warn(&pdev->dev, "Failed to request fault irq\n"); } - if (ltc3651_charger->chrg_gpio) { - ret = gpiod_to_irq(ltc3651_charger->chrg_gpio); + if (lt3651_charger->chrg_gpio) { + ret = gpiod_to_irq(lt3651_charger->chrg_gpio); if (ret >= 0) ret = devm_request_any_context_irq(&pdev->dev, ret, - ltc3651_charger_irq, + lt3651_charger_irq, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, - dev_name(&pdev->dev), ltc3651_charger->charger); + dev_name(&pdev->dev), lt3651_charger->charger); if (ret < 0) dev_warn(&pdev->dev, "Failed to request chrg irq\n"); } - platform_set_drvdata(pdev, ltc3651_charger); + platform_set_drvdata(pdev, lt3651_charger); return 0; } -static const struct of_device_id ltc3651_charger_match[] = { - { .compatible = "lltc,ltc3651-charger" }, +static const struct of_device_id lt3651_charger_match[] = { + { .compatible = "lltc,ltc3651-charger" }, /* DEPRECATED */ + { .compatible = "lltc,lt3651-charger" }, { } }; -MODULE_DEVICE_TABLE(of, ltc3651_charger_match); +MODULE_DEVICE_TABLE(of, lt3651_charger_match); -static struct platform_driver ltc3651_charger_driver = { - .probe = ltc3651_charger_probe, +static struct platform_driver lt3651_charger_driver = { + .probe = lt3651_charger_probe, .driver = { - .name = "ltc3651-charger", - .of_match_table = ltc3651_charger_match, + .name = "lt3651-charger", + .of_match_table = lt3651_charger_match, }, }; -module_platform_driver(ltc3651_charger_driver); +module_platform_driver(lt3651_charger_driver); MODULE_AUTHOR("Mike Looijmans "); -MODULE_DESCRIPTION("Driver for LTC3651 charger"); +MODULE_DESCRIPTION("Driver for LT3651 charger"); MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:ltc3651-charger"); +MODULE_ALIAS("platform:lt3651-charger"); -- cgit v1.2.3 From d7830ce3c5e0fe6aee645a1a01c9ae367d31bb9e Mon Sep 17 00:00:00 2001 From: Michael Hennerich Date: Tue, 9 Apr 2019 08:24:41 +0200 Subject: power: supply: ltc3651-charger: Fix device name (rename files) rename only - no functional changes Signed-off-by: Michael Hennerich Signed-off-by: Sebastian Reichel --- .../bindings/power/supply/lt3651-charger.txt | 29 +++ .../bindings/power/supply/ltc3651-charger.txt | 29 --- drivers/power/supply/Makefile | 2 +- drivers/power/supply/lt3651-charger.c | 207 +++++++++++++++++++++ drivers/power/supply/ltc3651-charger.c | 207 --------------------- 5 files changed, 237 insertions(+), 237 deletions(-) create mode 100644 Documentation/devicetree/bindings/power/supply/lt3651-charger.txt delete mode 100644 Documentation/devicetree/bindings/power/supply/ltc3651-charger.txt create mode 100644 drivers/power/supply/lt3651-charger.c delete mode 100644 drivers/power/supply/ltc3651-charger.c (limited to 'drivers/power') diff --git a/Documentation/devicetree/bindings/power/supply/lt3651-charger.txt b/Documentation/devicetree/bindings/power/supply/lt3651-charger.txt new file mode 100644 index 000000000000..40811ff8de10 --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/lt3651-charger.txt @@ -0,0 +1,29 @@ +Analog Devices LT3651 Charger Power Supply bindings: lt3651-charger + +Required properties: +- compatible: Should contain one of the following: + * "lltc,ltc3651-charger", (DEPRECATED: Use "lltc,lt3651-charger") + * "lltc,lt3651-charger" + - lltc,acpr-gpios: Connect to ACPR output. See remark below. + +Optional properties: + - lltc,fault-gpios: Connect to FAULT output. See remark below. + - lltc,chrg-gpios: Connect to CHRG output. See remark below. + +The lt3651 outputs are open-drain type and active low. The driver assumes the +GPIO reports "active" when the output is asserted, so if the pins have been +connected directly, the GPIO flags should be set to active low also. + +The driver will attempt to aquire interrupts for all GPIOs to detect changes in +line state. If the system is not capabale of providing interrupts, the driver +cannot report changes and userspace will need to periodically read the sysfs +attributes to detect changes. + +Example: + + charger: battery-charger { + compatible = "lltc,lt3651-charger"; + lltc,acpr-gpios = <&gpio0 68 GPIO_ACTIVE_LOW>; + lltc,fault-gpios = <&gpio0 64 GPIO_ACTIVE_LOW>; + lltc,chrg-gpios = <&gpio0 63 GPIO_ACTIVE_LOW>; + }; diff --git a/Documentation/devicetree/bindings/power/supply/ltc3651-charger.txt b/Documentation/devicetree/bindings/power/supply/ltc3651-charger.txt deleted file mode 100644 index 40811ff8de10..000000000000 --- a/Documentation/devicetree/bindings/power/supply/ltc3651-charger.txt +++ /dev/null @@ -1,29 +0,0 @@ -Analog Devices LT3651 Charger Power Supply bindings: lt3651-charger - -Required properties: -- compatible: Should contain one of the following: - * "lltc,ltc3651-charger", (DEPRECATED: Use "lltc,lt3651-charger") - * "lltc,lt3651-charger" - - lltc,acpr-gpios: Connect to ACPR output. See remark below. - -Optional properties: - - lltc,fault-gpios: Connect to FAULT output. See remark below. - - lltc,chrg-gpios: Connect to CHRG output. See remark below. - -The lt3651 outputs are open-drain type and active low. The driver assumes the -GPIO reports "active" when the output is asserted, so if the pins have been -connected directly, the GPIO flags should be set to active low also. - -The driver will attempt to aquire interrupts for all GPIOs to detect changes in -line state. If the system is not capabale of providing interrupts, the driver -cannot report changes and userspace will need to periodically read the sysfs -attributes to detect changes. - -Example: - - charger: battery-charger { - compatible = "lltc,lt3651-charger"; - lltc,acpr-gpios = <&gpio0 68 GPIO_ACTIVE_LOW>; - lltc,fault-gpios = <&gpio0 64 GPIO_ACTIVE_LOW>; - lltc,chrg-gpios = <&gpio0 63 GPIO_ACTIVE_LOW>; - }; diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile index 714c6029cff7..a2b3ab157ca0 100644 --- a/drivers/power/supply/Makefile +++ b/drivers/power/supply/Makefile @@ -67,7 +67,7 @@ obj-$(CONFIG_CHARGER_LP8727) += lp8727_charger.o obj-$(CONFIG_CHARGER_LP8788) += lp8788-charger.o obj-$(CONFIG_CHARGER_GPIO) += gpio-charger.o obj-$(CONFIG_CHARGER_MANAGER) += charger-manager.o -obj-$(CONFIG_CHARGER_LT3651) += ltc3651-charger.o +obj-$(CONFIG_CHARGER_LT3651) += lt3651-charger.o obj-$(CONFIG_CHARGER_MAX14577) += max14577_charger.o obj-$(CONFIG_CHARGER_DETECTOR_MAX14656) += max14656_charger_detector.o obj-$(CONFIG_CHARGER_MAX77693) += max77693_charger.o diff --git a/drivers/power/supply/lt3651-charger.c b/drivers/power/supply/lt3651-charger.c new file mode 100644 index 000000000000..8de500ffad95 --- /dev/null +++ b/drivers/power/supply/lt3651-charger.c @@ -0,0 +1,207 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Driver for Analog Devices (Linear Technology) LT3651 charger IC. + * Copyright (C) 2017, Topic Embedded Products + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct lt3651_charger { + struct power_supply *charger; + struct power_supply_desc charger_desc; + struct gpio_desc *acpr_gpio; + struct gpio_desc *fault_gpio; + struct gpio_desc *chrg_gpio; +}; + +static irqreturn_t lt3651_charger_irq(int irq, void *devid) +{ + struct power_supply *charger = devid; + + power_supply_changed(charger); + + return IRQ_HANDLED; +} + +static inline struct lt3651_charger *psy_to_lt3651_charger( + struct power_supply *psy) +{ + return power_supply_get_drvdata(psy); +} + +static int lt3651_charger_get_property(struct power_supply *psy, + enum power_supply_property psp, union power_supply_propval *val) +{ + struct lt3651_charger *lt3651_charger = psy_to_lt3651_charger(psy); + + switch (psp) { + case POWER_SUPPLY_PROP_STATUS: + if (!lt3651_charger->chrg_gpio) { + val->intval = POWER_SUPPLY_STATUS_UNKNOWN; + break; + } + if (gpiod_get_value(lt3651_charger->chrg_gpio)) + val->intval = POWER_SUPPLY_STATUS_CHARGING; + else + val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; + break; + case POWER_SUPPLY_PROP_ONLINE: + val->intval = gpiod_get_value(lt3651_charger->acpr_gpio); + break; + case POWER_SUPPLY_PROP_HEALTH: + if (!lt3651_charger->fault_gpio) { + val->intval = POWER_SUPPLY_HEALTH_UNKNOWN; + break; + } + if (!gpiod_get_value(lt3651_charger->fault_gpio)) { + val->intval = POWER_SUPPLY_HEALTH_GOOD; + break; + } + /* + * If the fault pin is active, the chrg pin explains the type + * of failure. + */ + if (!lt3651_charger->chrg_gpio) { + val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; + break; + } + val->intval = gpiod_get_value(lt3651_charger->chrg_gpio) ? + POWER_SUPPLY_HEALTH_OVERHEAT : + POWER_SUPPLY_HEALTH_DEAD; + break; + default: + return -EINVAL; + } + + return 0; +} + +static enum power_supply_property lt3651_charger_properties[] = { + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_HEALTH, +}; + +static int lt3651_charger_probe(struct platform_device *pdev) +{ + struct power_supply_config psy_cfg = {}; + struct lt3651_charger *lt3651_charger; + struct power_supply_desc *charger_desc; + int ret; + + lt3651_charger = devm_kzalloc(&pdev->dev, sizeof(*lt3651_charger), + GFP_KERNEL); + if (!lt3651_charger) + return -ENOMEM; + + lt3651_charger->acpr_gpio = devm_gpiod_get(&pdev->dev, + "lltc,acpr", GPIOD_IN); + if (IS_ERR(lt3651_charger->acpr_gpio)) { + ret = PTR_ERR(lt3651_charger->acpr_gpio); + dev_err(&pdev->dev, "Failed to acquire acpr GPIO: %d\n", ret); + return ret; + } + lt3651_charger->fault_gpio = devm_gpiod_get_optional(&pdev->dev, + "lltc,fault", GPIOD_IN); + if (IS_ERR(lt3651_charger->fault_gpio)) { + ret = PTR_ERR(lt3651_charger->fault_gpio); + dev_err(&pdev->dev, "Failed to acquire fault GPIO: %d\n", ret); + return ret; + } + lt3651_charger->chrg_gpio = devm_gpiod_get_optional(&pdev->dev, + "lltc,chrg", GPIOD_IN); + if (IS_ERR(lt3651_charger->chrg_gpio)) { + ret = PTR_ERR(lt3651_charger->chrg_gpio); + dev_err(&pdev->dev, "Failed to acquire chrg GPIO: %d\n", ret); + return ret; + } + + charger_desc = <3651_charger->charger_desc; + charger_desc->name = pdev->dev.of_node->name; + charger_desc->type = POWER_SUPPLY_TYPE_MAINS; + charger_desc->properties = lt3651_charger_properties; + charger_desc->num_properties = ARRAY_SIZE(lt3651_charger_properties); + charger_desc->get_property = lt3651_charger_get_property; + psy_cfg.of_node = pdev->dev.of_node; + psy_cfg.drv_data = lt3651_charger; + + lt3651_charger->charger = devm_power_supply_register(&pdev->dev, + charger_desc, &psy_cfg); + if (IS_ERR(lt3651_charger->charger)) { + ret = PTR_ERR(lt3651_charger->charger); + dev_err(&pdev->dev, "Failed to register power supply: %d\n", + ret); + return ret; + } + + /* + * Acquire IRQs for the GPIO pins if possible. If the system does not + * support IRQs on these pins, userspace will have to poll the sysfs + * files manually. + */ + if (lt3651_charger->acpr_gpio) { + ret = gpiod_to_irq(lt3651_charger->acpr_gpio); + if (ret >= 0) + ret = devm_request_any_context_irq(&pdev->dev, ret, + lt3651_charger_irq, + IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, + dev_name(&pdev->dev), lt3651_charger->charger); + if (ret < 0) + dev_warn(&pdev->dev, "Failed to request acpr irq\n"); + } + if (lt3651_charger->fault_gpio) { + ret = gpiod_to_irq(lt3651_charger->fault_gpio); + if (ret >= 0) + ret = devm_request_any_context_irq(&pdev->dev, ret, + lt3651_charger_irq, + IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, + dev_name(&pdev->dev), lt3651_charger->charger); + if (ret < 0) + dev_warn(&pdev->dev, "Failed to request fault irq\n"); + } + if (lt3651_charger->chrg_gpio) { + ret = gpiod_to_irq(lt3651_charger->chrg_gpio); + if (ret >= 0) + ret = devm_request_any_context_irq(&pdev->dev, ret, + lt3651_charger_irq, + IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, + dev_name(&pdev->dev), lt3651_charger->charger); + if (ret < 0) + dev_warn(&pdev->dev, "Failed to request chrg irq\n"); + } + + platform_set_drvdata(pdev, lt3651_charger); + + return 0; +} + +static const struct of_device_id lt3651_charger_match[] = { + { .compatible = "lltc,ltc3651-charger" }, /* DEPRECATED */ + { .compatible = "lltc,lt3651-charger" }, + { } +}; +MODULE_DEVICE_TABLE(of, lt3651_charger_match); + +static struct platform_driver lt3651_charger_driver = { + .probe = lt3651_charger_probe, + .driver = { + .name = "lt3651-charger", + .of_match_table = lt3651_charger_match, + }, +}; + +module_platform_driver(lt3651_charger_driver); + +MODULE_AUTHOR("Mike Looijmans "); +MODULE_DESCRIPTION("Driver for LT3651 charger"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:lt3651-charger"); diff --git a/drivers/power/supply/ltc3651-charger.c b/drivers/power/supply/ltc3651-charger.c deleted file mode 100644 index 8de500ffad95..000000000000 --- a/drivers/power/supply/ltc3651-charger.c +++ /dev/null @@ -1,207 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Driver for Analog Devices (Linear Technology) LT3651 charger IC. - * Copyright (C) 2017, Topic Embedded Products - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -struct lt3651_charger { - struct power_supply *charger; - struct power_supply_desc charger_desc; - struct gpio_desc *acpr_gpio; - struct gpio_desc *fault_gpio; - struct gpio_desc *chrg_gpio; -}; - -static irqreturn_t lt3651_charger_irq(int irq, void *devid) -{ - struct power_supply *charger = devid; - - power_supply_changed(charger); - - return IRQ_HANDLED; -} - -static inline struct lt3651_charger *psy_to_lt3651_charger( - struct power_supply *psy) -{ - return power_supply_get_drvdata(psy); -} - -static int lt3651_charger_get_property(struct power_supply *psy, - enum power_supply_property psp, union power_supply_propval *val) -{ - struct lt3651_charger *lt3651_charger = psy_to_lt3651_charger(psy); - - switch (psp) { - case POWER_SUPPLY_PROP_STATUS: - if (!lt3651_charger->chrg_gpio) { - val->intval = POWER_SUPPLY_STATUS_UNKNOWN; - break; - } - if (gpiod_get_value(lt3651_charger->chrg_gpio)) - val->intval = POWER_SUPPLY_STATUS_CHARGING; - else - val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; - break; - case POWER_SUPPLY_PROP_ONLINE: - val->intval = gpiod_get_value(lt3651_charger->acpr_gpio); - break; - case POWER_SUPPLY_PROP_HEALTH: - if (!lt3651_charger->fault_gpio) { - val->intval = POWER_SUPPLY_HEALTH_UNKNOWN; - break; - } - if (!gpiod_get_value(lt3651_charger->fault_gpio)) { - val->intval = POWER_SUPPLY_HEALTH_GOOD; - break; - } - /* - * If the fault pin is active, the chrg pin explains the type - * of failure. - */ - if (!lt3651_charger->chrg_gpio) { - val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; - break; - } - val->intval = gpiod_get_value(lt3651_charger->chrg_gpio) ? - POWER_SUPPLY_HEALTH_OVERHEAT : - POWER_SUPPLY_HEALTH_DEAD; - break; - default: - return -EINVAL; - } - - return 0; -} - -static enum power_supply_property lt3651_charger_properties[] = { - POWER_SUPPLY_PROP_STATUS, - POWER_SUPPLY_PROP_ONLINE, - POWER_SUPPLY_PROP_HEALTH, -}; - -static int lt3651_charger_probe(struct platform_device *pdev) -{ - struct power_supply_config psy_cfg = {}; - struct lt3651_charger *lt3651_charger; - struct power_supply_desc *charger_desc; - int ret; - - lt3651_charger = devm_kzalloc(&pdev->dev, sizeof(*lt3651_charger), - GFP_KERNEL); - if (!lt3651_charger) - return -ENOMEM; - - lt3651_charger->acpr_gpio = devm_gpiod_get(&pdev->dev, - "lltc,acpr", GPIOD_IN); - if (IS_ERR(lt3651_charger->acpr_gpio)) { - ret = PTR_ERR(lt3651_charger->acpr_gpio); - dev_err(&pdev->dev, "Failed to acquire acpr GPIO: %d\n", ret); - return ret; - } - lt3651_charger->fault_gpio = devm_gpiod_get_optional(&pdev->dev, - "lltc,fault", GPIOD_IN); - if (IS_ERR(lt3651_charger->fault_gpio)) { - ret = PTR_ERR(lt3651_charger->fault_gpio); - dev_err(&pdev->dev, "Failed to acquire fault GPIO: %d\n", ret); - return ret; - } - lt3651_charger->chrg_gpio = devm_gpiod_get_optional(&pdev->dev, - "lltc,chrg", GPIOD_IN); - if (IS_ERR(lt3651_charger->chrg_gpio)) { - ret = PTR_ERR(lt3651_charger->chrg_gpio); - dev_err(&pdev->dev, "Failed to acquire chrg GPIO: %d\n", ret); - return ret; - } - - charger_desc = <3651_charger->charger_desc; - charger_desc->name = pdev->dev.of_node->name; - charger_desc->type = POWER_SUPPLY_TYPE_MAINS; - charger_desc->properties = lt3651_charger_properties; - charger_desc->num_properties = ARRAY_SIZE(lt3651_charger_properties); - charger_desc->get_property = lt3651_charger_get_property; - psy_cfg.of_node = pdev->dev.of_node; - psy_cfg.drv_data = lt3651_charger; - - lt3651_charger->charger = devm_power_supply_register(&pdev->dev, - charger_desc, &psy_cfg); - if (IS_ERR(lt3651_charger->charger)) { - ret = PTR_ERR(lt3651_charger->charger); - dev_err(&pdev->dev, "Failed to register power supply: %d\n", - ret); - return ret; - } - - /* - * Acquire IRQs for the GPIO pins if possible. If the system does not - * support IRQs on these pins, userspace will have to poll the sysfs - * files manually. - */ - if (lt3651_charger->acpr_gpio) { - ret = gpiod_to_irq(lt3651_charger->acpr_gpio); - if (ret >= 0) - ret = devm_request_any_context_irq(&pdev->dev, ret, - lt3651_charger_irq, - IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, - dev_name(&pdev->dev), lt3651_charger->charger); - if (ret < 0) - dev_warn(&pdev->dev, "Failed to request acpr irq\n"); - } - if (lt3651_charger->fault_gpio) { - ret = gpiod_to_irq(lt3651_charger->fault_gpio); - if (ret >= 0) - ret = devm_request_any_context_irq(&pdev->dev, ret, - lt3651_charger_irq, - IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, - dev_name(&pdev->dev), lt3651_charger->charger); - if (ret < 0) - dev_warn(&pdev->dev, "Failed to request fault irq\n"); - } - if (lt3651_charger->chrg_gpio) { - ret = gpiod_to_irq(lt3651_charger->chrg_gpio); - if (ret >= 0) - ret = devm_request_any_context_irq(&pdev->dev, ret, - lt3651_charger_irq, - IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, - dev_name(&pdev->dev), lt3651_charger->charger); - if (ret < 0) - dev_warn(&pdev->dev, "Failed to request chrg irq\n"); - } - - platform_set_drvdata(pdev, lt3651_charger); - - return 0; -} - -static const struct of_device_id lt3651_charger_match[] = { - { .compatible = "lltc,ltc3651-charger" }, /* DEPRECATED */ - { .compatible = "lltc,lt3651-charger" }, - { } -}; -MODULE_DEVICE_TABLE(of, lt3651_charger_match); - -static struct platform_driver lt3651_charger_driver = { - .probe = lt3651_charger_probe, - .driver = { - .name = "lt3651-charger", - .of_match_table = lt3651_charger_match, - }, -}; - -module_platform_driver(lt3651_charger_driver); - -MODULE_AUTHOR("Mike Looijmans "); -MODULE_DESCRIPTION("Driver for LT3651 charger"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:lt3651-charger"); -- cgit v1.2.3 From 5ec87ecde235a2e0aa99ceae57b9d0978461ebe4 Mon Sep 17 00:00:00 2001 From: Enric Balletbo i Serra Date: Mon, 15 Apr 2019 16:29:18 +0200 Subject: power: supply: core: fix typo in function to get current charge control limit There is a spelling mistake in ps_get_cur_charge_cntl_limit function so replace 'chrage' for 'charge'. Signed-off-by: Enric Balletbo i Serra Signed-off-by: Sebastian Reichel --- drivers/power/supply/power_supply_core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/supply/power_supply_core.c index ae9c9d1d437c..65c619c03223 100644 --- a/drivers/power/supply/power_supply_core.c +++ b/drivers/power/supply/power_supply_core.c @@ -899,7 +899,7 @@ static int ps_get_max_charge_cntl_limit(struct thermal_cooling_device *tcd, return ret; } -static int ps_get_cur_chrage_cntl_limit(struct thermal_cooling_device *tcd, +static int ps_get_cur_charge_cntl_limit(struct thermal_cooling_device *tcd, unsigned long *state) { struct power_supply *psy; @@ -934,7 +934,7 @@ static int ps_set_cur_charge_cntl_limit(struct thermal_cooling_device *tcd, static const struct thermal_cooling_device_ops psy_tcd_ops = { .get_max_state = ps_get_max_charge_cntl_limit, - .get_cur_state = ps_get_cur_chrage_cntl_limit, + .get_cur_state = ps_get_cur_charge_cntl_limit, .set_cur_state = ps_set_cur_charge_cntl_limit, }; -- cgit v1.2.3 From df68c44c720ae6415cb1f0c0d9a2e9893f3b1765 Mon Sep 17 00:00:00 2001 From: Artur Rojek Date: Sun, 14 Apr 2019 14:40:39 +0200 Subject: power: supply: gpio-charger: Add support for charger status. Introduce optional support of POWER_SUPPLY_PROP_STATUS for chargers which provide charging status GPIO. Signed-off-by: Artur Rojek Signed-off-by: Sebastian Reichel --- drivers/power/supply/gpio-charger.c | 57 ++++++++++++++++++++++++++++++------- 1 file changed, 46 insertions(+), 11 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/gpio-charger.c b/drivers/power/supply/gpio-charger.c index 7e4f11d5a230..f99e8f1eef23 100644 --- a/drivers/power/supply/gpio-charger.c +++ b/drivers/power/supply/gpio-charger.c @@ -29,11 +29,13 @@ struct gpio_charger { unsigned int irq; + unsigned int charge_status_irq; bool wakeup_enabled; struct power_supply *charger; struct power_supply_desc charger_desc; struct gpio_desc *gpiod; + struct gpio_desc *charge_status; }; static irqreturn_t gpio_charger_irq(int irq, void *devid) @@ -59,6 +61,12 @@ static int gpio_charger_get_property(struct power_supply *psy, case POWER_SUPPLY_PROP_ONLINE: val->intval = gpiod_get_value_cansleep(gpio_charger->gpiod); break; + case POWER_SUPPLY_PROP_STATUS: + if (gpiod_get_value_cansleep(gpio_charger->charge_status)) + val->intval = POWER_SUPPLY_STATUS_CHARGING; + else + val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; + break; default: return -EINVAL; } @@ -93,8 +101,29 @@ static enum power_supply_type gpio_charger_get_type(struct device *dev) return POWER_SUPPLY_TYPE_UNKNOWN; } +static int gpio_charger_get_irq(struct device *dev, void *dev_id, + struct gpio_desc *gpio) +{ + int ret, irq = gpiod_to_irq(gpio); + + if (irq > 0) { + ret = devm_request_any_context_irq(dev, irq, gpio_charger_irq, + IRQF_TRIGGER_RISING | + IRQF_TRIGGER_FALLING, + dev_name(dev), + dev_id); + if (ret < 0) { + dev_warn(dev, "Failed to request irq: %d\n", ret); + irq = 0; + } + } + + return irq; +} + static enum power_supply_property gpio_charger_properties[] = { POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_STATUS /* Must always be last in the array. */ }; static int gpio_charger_probe(struct platform_device *pdev) @@ -104,8 +133,10 @@ static int gpio_charger_probe(struct platform_device *pdev) struct power_supply_config psy_cfg = {}; struct gpio_charger *gpio_charger; struct power_supply_desc *charger_desc; + struct gpio_desc *charge_status; + int charge_status_irq; unsigned long flags; - int irq, ret; + int ret; if (!pdata && !dev->of_node) { dev_err(dev, "No platform data\n"); @@ -151,9 +182,17 @@ static int gpio_charger_probe(struct platform_device *pdev) return PTR_ERR(gpio_charger->gpiod); } + charge_status = devm_gpiod_get_optional(dev, "charge-status", GPIOD_IN); + gpio_charger->charge_status = charge_status; + if (IS_ERR(gpio_charger->charge_status)) + return PTR_ERR(gpio_charger->charge_status); + charger_desc = &gpio_charger->charger_desc; charger_desc->properties = gpio_charger_properties; charger_desc->num_properties = ARRAY_SIZE(gpio_charger_properties); + /* Remove POWER_SUPPLY_PROP_STATUS from the supported properties. */ + if (!gpio_charger->charge_status) + charger_desc->num_properties -= 1; charger_desc->get_property = gpio_charger_get_property; psy_cfg.of_node = dev->of_node; @@ -180,16 +219,12 @@ static int gpio_charger_probe(struct platform_device *pdev) return ret; } - irq = gpiod_to_irq(gpio_charger->gpiod); - if (irq > 0) { - ret = devm_request_any_context_irq(dev, irq, gpio_charger_irq, - IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, - dev_name(dev), gpio_charger->charger); - if (ret < 0) - dev_warn(dev, "Failed to request irq: %d\n", ret); - else - gpio_charger->irq = irq; - } + gpio_charger->irq = gpio_charger_get_irq(dev, gpio_charger->charger, + gpio_charger->gpiod); + + charge_status_irq = gpio_charger_get_irq(dev, gpio_charger->charger, + gpio_charger->charge_status); + gpio_charger->charge_status_irq = charge_status_irq; platform_set_drvdata(pdev, gpio_charger); -- cgit v1.2.3 From 1a9aadc86ad45f5281ea633c244b6b770dc85b5b Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Sun, 7 Apr 2019 11:12:49 -0700 Subject: power: supply: cpcap-battery: Fix low battery check We need to check current instead of the charge counter to see if a charger is connected. The charge counter shows the cumulated value instead of the current charge current and can be negative or positive. Cc: Pavel Machek Signed-off-by: Tony Lindgren Signed-off-by: Sebastian Reichel --- drivers/power/supply/cpcap-battery.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/cpcap-battery.c b/drivers/power/supply/cpcap-battery.c index 6887870ba32c..d8855078dc1e 100644 --- a/drivers/power/supply/cpcap-battery.c +++ b/drivers/power/supply/cpcap-battery.c @@ -562,11 +562,11 @@ static irqreturn_t cpcap_battery_irq_thread(int irq, void *data) switch (d->action) { case CPCAP_BATTERY_IRQ_ACTION_BATTERY_LOW: - if (latest->counter_uah >= 0) + if (latest->current_ua >= 0) dev_warn(ddata->dev, "Battery low at 3.3V!\n"); break; case CPCAP_BATTERY_IRQ_ACTION_POWEROFF: - if (latest->counter_uah >= 0) { + if (latest->current_ua >= 0) { dev_emerg(ddata->dev, "Battery empty at 3.1V, powering off\n"); orderly_poweroff(true); -- cgit v1.2.3 From c68b901ac4fa969db8917b6a9f9b40524a690d20 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Sun, 7 Apr 2019 11:12:50 -0700 Subject: power: supply: cpcap-battery: Fix signed counter sample register The accumulator sample register is signed 32-bits wide register on droid 4. And only the earlier version of cpcap has a signed 24-bits wide register. We're currently passing it around as unsigned, so let's fix that and use sign_extend32() for the earlier revision. Signed-off-by: Tony Lindgren Acked-by: Pavel Machek Signed-off-by: Sebastian Reichel --- drivers/power/supply/cpcap-battery.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/cpcap-battery.c b/drivers/power/supply/cpcap-battery.c index d8855078dc1e..a9e4952e9c12 100644 --- a/drivers/power/supply/cpcap-battery.c +++ b/drivers/power/supply/cpcap-battery.c @@ -82,7 +82,7 @@ struct cpcap_battery_config { }; struct cpcap_coulomb_counter_data { - s32 sample; /* 24-bits */ + s32 sample; /* 24 or 32 bits */ s32 accumulator; s16 offset; /* 10-bits */ }; @@ -213,7 +213,7 @@ static int cpcap_battery_get_current(struct cpcap_battery_ddata *ddata) * TI or ST coulomb counter in the PMIC. */ static int cpcap_battery_cc_raw_div(struct cpcap_battery_ddata *ddata, - u32 sample, s32 accumulator, + s32 sample, s32 accumulator, s16 offset, u32 divider) { s64 acc; @@ -224,7 +224,6 @@ static int cpcap_battery_cc_raw_div(struct cpcap_battery_ddata *ddata, if (!divider) return 0; - sample &= 0xffffff; /* 24-bits, unsigned */ offset &= 0x7ff; /* 10-bits, signed */ switch (ddata->vendor) { @@ -259,7 +258,7 @@ static int cpcap_battery_cc_raw_div(struct cpcap_battery_ddata *ddata, /* 3600000μAms = 1μAh */ static int cpcap_battery_cc_to_uah(struct cpcap_battery_ddata *ddata, - u32 sample, s32 accumulator, + s32 sample, s32 accumulator, s16 offset) { return cpcap_battery_cc_raw_div(ddata, sample, @@ -268,7 +267,7 @@ static int cpcap_battery_cc_to_uah(struct cpcap_battery_ddata *ddata, } static int cpcap_battery_cc_to_ua(struct cpcap_battery_ddata *ddata, - u32 sample, s32 accumulator, + s32 sample, s32 accumulator, s16 offset) { return cpcap_battery_cc_raw_div(ddata, sample, @@ -312,6 +311,8 @@ cpcap_battery_read_accumulated(struct cpcap_battery_ddata *ddata, /* Sample value CPCAP_REG_CCS1 & 2 */ ccd->sample = (buf[1] & 0x0fff) << 16; ccd->sample |= buf[0]; + if (ddata->vendor == CPCAP_VENDOR_TI) + ccd->sample = sign_extend32(24, ccd->sample); /* Accumulator value CPCAP_REG_CCA1 & 2 */ ccd->accumulator = ((s16)buf[3]) << 16; -- cgit v1.2.3 From 35439b7ab2dbd458377efaa979820360f4951784 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Sun, 7 Apr 2019 11:12:51 -0700 Subject: power: supply: cpcap-battery: Fix coulomb counter calibration register use The coulomb counter calibration is not CCO, it's CCM. And the CCM is nine bits wide signed register, so let's use sign_extend32() for it. Signed-off-by: Tony Lindgren Acked-by: Pavel Machek Signed-off-by: Sebastian Reichel --- drivers/power/supply/cpcap-battery.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/cpcap-battery.c b/drivers/power/supply/cpcap-battery.c index a9e4952e9c12..c8c893de00fd 100644 --- a/drivers/power/supply/cpcap-battery.c +++ b/drivers/power/supply/cpcap-battery.c @@ -84,7 +84,7 @@ struct cpcap_battery_config { struct cpcap_coulomb_counter_data { s32 sample; /* 24 or 32 bits */ s32 accumulator; - s16 offset; /* 10-bits */ + s16 offset; /* 9 bits */ }; enum cpcap_battery_state { @@ -224,8 +224,6 @@ static int cpcap_battery_cc_raw_div(struct cpcap_battery_ddata *ddata, if (!divider) return 0; - offset &= 0x7ff; /* 10-bits, signed */ - switch (ddata->vendor) { case CPCAP_VENDOR_ST: cc_lsb = 95374; /* μAms per LSB */ @@ -318,12 +316,12 @@ cpcap_battery_read_accumulated(struct cpcap_battery_ddata *ddata, ccd->accumulator = ((s16)buf[3]) << 16; ccd->accumulator |= buf[2]; - /* Offset value CPCAP_REG_CCO */ - ccd->offset = buf[5]; - - /* Adjust offset based on mode value CPCAP_REG_CCM? */ - if (buf[4] >= 0x200) - ccd->offset |= 0xfc00; + /* + * Coulomb counter calibration offset is CPCAP_REG_CCM, + * REG_CCO seems unused + */ + ccd->offset = buf[4]; + ccd->offset = sign_extend32(ccd->offset, 9); return cpcap_battery_cc_to_uah(ddata, ccd->sample, -- cgit v1.2.3 From 5fc27a54192687a41df3d7fd70e0648bb1ca391e Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Sun, 7 Apr 2019 11:12:52 -0700 Subject: power: supply: cpcap-battery: Use accumulator for current and power average We should not use measured current value for average since we have proper coulomb counter values available. Using measured current value should be only used when the value is queried at a higher rate than the 250 ms rate the coulomb counter is configured to run at. Cc: Pavel Machek Signed-off-by: Tony Lindgren Signed-off-by: Sebastian Reichel --- drivers/power/supply/cpcap-battery.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/cpcap-battery.c b/drivers/power/supply/cpcap-battery.c index c8c893de00fd..2f55a25addee 100644 --- a/drivers/power/supply/cpcap-battery.c +++ b/drivers/power/supply/cpcap-battery.c @@ -476,11 +476,11 @@ static int cpcap_battery_get_property(struct power_supply *psy, val->intval = ddata->config.info.voltage_min_design; break; case POWER_SUPPLY_PROP_CURRENT_AVG: - if (cached) { + sample = latest->cc.sample - previous->cc.sample; + if (!sample) { val->intval = cpcap_battery_cc_get_avg_current(ddata); break; } - sample = latest->cc.sample - previous->cc.sample; accumulator = latest->cc.accumulator - previous->cc.accumulator; val->intval = cpcap_battery_cc_to_ua(ddata, sample, accumulator, @@ -497,13 +497,13 @@ static int cpcap_battery_get_property(struct power_supply *psy, val->intval = div64_s64(tmp, 100); break; case POWER_SUPPLY_PROP_POWER_AVG: - if (cached) { + sample = latest->cc.sample - previous->cc.sample; + if (!sample) { tmp = cpcap_battery_cc_get_avg_current(ddata); tmp *= (latest->voltage / 10000); val->intval = div64_s64(tmp, 100); break; } - sample = latest->cc.sample - previous->cc.sample; accumulator = latest->cc.accumulator - previous->cc.accumulator; tmp = cpcap_battery_cc_to_ua(ddata, sample, accumulator, latest->cc.offset); -- cgit v1.2.3 From ffaf6f6773af7d2bad983f43f6ffb4246591a578 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Sun, 7 Apr 2019 11:12:53 -0700 Subject: power: supply: cpcap-battery: Fix pointless EPROBE_DEFER warnings With loadable modules we may get the following during init: could not initialize VBUS or ID IIO: -517 Let's not print any pointless error messages for deferred probe. Signed-off-by: Tony Lindgren Acked-by: Pavel Machek Signed-off-by: Sebastian Reichel --- drivers/power/supply/cpcap-battery.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/cpcap-battery.c b/drivers/power/supply/cpcap-battery.c index 2f55a25addee..61d6447d1966 100644 --- a/drivers/power/supply/cpcap-battery.c +++ b/drivers/power/supply/cpcap-battery.c @@ -669,8 +669,9 @@ static int cpcap_battery_init_iio(struct cpcap_battery_ddata *ddata) return 0; out_err: - dev_err(ddata->dev, "could not initialize VBUS or ID IIO: %i\n", - error); + if (error != -EPROBE_DEFER) + dev_err(ddata->dev, "could not initialize VBUS or ID IIO: %i\n", + error); return error; } -- cgit v1.2.3 From 7d90fcc14a25b1ba715427f2af706809bb56a6f4 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Sun, 7 Apr 2019 11:12:54 -0700 Subject: power: supply: cpcap-charger: Fix pointless EPROBE_DEFER warnings With loadable modules we may get the following during init: could not initialize VBUS or ID IIO: -517 Let's not print any pointless error messages for deferred probe. Signed-off-by: Tony Lindgren Acked-by: Pavel Machek Signed-off-by: Sebastian Reichel --- drivers/power/supply/cpcap-charger.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/cpcap-charger.c b/drivers/power/supply/cpcap-charger.c index c3ed7b476676..b4781b5d1e10 100644 --- a/drivers/power/supply/cpcap-charger.c +++ b/drivers/power/supply/cpcap-charger.c @@ -574,8 +574,9 @@ static int cpcap_charger_init_iio(struct cpcap_charger_ddata *ddata) return 0; out_err: - dev_err(ddata->dev, "could not initialize VBUS or ID IIO: %i\n", - error); + if (error != -EPROBE_DEFER) + dev_err(ddata->dev, "could not initialize VBUS or ID IIO: %i\n", + error); return error; } -- cgit v1.2.3 From 0b646fd1b1963bf44fe81853e89f3469aeb94a6c Mon Sep 17 00:00:00 2001 From: Wen Yang Date: Wed, 17 Apr 2019 10:43:02 +0800 Subject: power: supply: ab8500: fix leaked of_node refs in ab8500_bm_of_probe The call to of_parse_phandle returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. 492 int ab8500_bm_of_probe(struct device *dev, 493 struct device_node *np, 494 struct abx500_bm_data *bm) 495 { 496 const struct batres_vs_temp *tmp_batres_tbl; 497 struct device_node *battery_node; ... 501 /* get phandle to 'battery-info' node */ 502 battery_node = of_parse_phandle(np, "battery", 0); ... 509 if (!btech) { 510 dev_warn(dev, "missing property battery-name/type\n"); 511 return -EINVAL; ---> leaked here 512 } ... 540 of_node_put(battery_node); ---> released here 541 542 return 0; 543 } Detected by coccinelle with the following warnings: ./drivers/power/supply/ab8500_bmdata.c:511:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 502, but without a corresponding object release within this function. Signed-off-by: Wen Yang Signed-off-by: Sebastian Reichel --- drivers/power/supply/ab8500_bmdata.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/power') diff --git a/drivers/power/supply/ab8500_bmdata.c b/drivers/power/supply/ab8500_bmdata.c index 7b2b69916f48..f6a66979cbb5 100644 --- a/drivers/power/supply/ab8500_bmdata.c +++ b/drivers/power/supply/ab8500_bmdata.c @@ -508,6 +508,7 @@ int ab8500_bm_of_probe(struct device *dev, btech = of_get_property(battery_node, "stericsson,battery-type", NULL); if (!btech) { dev_warn(dev, "missing property battery-name/type\n"); + of_node_put(battery_node); return -EINVAL; } -- cgit v1.2.3 From 2143bf6d7cfe74feb5694fba7e9000ddcd5fb25e Mon Sep 17 00:00:00 2001 From: Wen Yang Date: Wed, 17 Apr 2019 10:43:03 +0800 Subject: power: supply: core: fix leaked of_node refs in power_supply_get_battery_info The call to of_parse_phandle returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. Detected by coccinelle with the following warnings: ./drivers/power/supply/power_supply_core.c:601:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 595, but without a corresponding object release within this function. ./drivers/power/supply/power_supply_core.c:604:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 595, but without a corresponding object release within this function. ./drivers/power/supply/power_supply_core.c:632:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 595, but without a corresponding object release within this function. ./drivers/power/supply/power_supply_core.c:635:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 595, but without a corresponding object release within this function. ./drivers/power/supply/power_supply_core.c:653:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 595, but without a corresponding object release within this function. ./drivers/power/supply/power_supply_core.c:664:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 595, but without a corresponding object release within this function. ./drivers/power/supply/power_supply_core.c:673:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 595, but without a corresponding object release within this function. Signed-off-by: Wen Yang Signed-off-by: Sebastian Reichel --- drivers/power/supply/power_supply_core.c | 24 ++++++++++++++++-------- 1 file changed, 16 insertions(+), 8 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/supply/power_supply_core.c index 65c619c03223..874495c6face 100644 --- a/drivers/power/supply/power_supply_core.c +++ b/drivers/power/supply/power_supply_core.c @@ -598,10 +598,12 @@ int power_supply_get_battery_info(struct power_supply *psy, err = of_property_read_string(battery_np, "compatible", &value); if (err) - return err; + goto out_put_node; - if (strcmp("simple-battery", value)) - return -ENODEV; + if (strcmp("simple-battery", value)) { + err = -ENODEV; + goto out_put_node; + } /* The property and field names below must correspond to elements * in enum power_supply_property. For reasoning, see @@ -629,10 +631,12 @@ int power_supply_get_battery_info(struct power_supply *psy, len = of_property_count_u32_elems(battery_np, "ocv-capacity-celsius"); if (len < 0 && len != -EINVAL) { - return len; + err = len; + goto out_put_node; } else if (len > POWER_SUPPLY_OCV_TEMP_MAX) { dev_err(&psy->dev, "Too many temperature values\n"); - return -EINVAL; + err = -EINVAL; + goto out_put_node; } else if (len > 0) { of_property_read_u32_array(battery_np, "ocv-capacity-celsius", info->ocv_temp, len); @@ -650,7 +654,8 @@ int power_supply_get_battery_info(struct power_supply *psy, dev_err(&psy->dev, "failed to get %s\n", propname); kfree(propname); power_supply_put_battery_info(psy, info); - return -EINVAL; + err = -EINVAL; + goto out_put_node; } kfree(propname); @@ -661,7 +666,8 @@ int power_supply_get_battery_info(struct power_supply *psy, devm_kcalloc(&psy->dev, tab_len, sizeof(*table), GFP_KERNEL); if (!info->ocv_table[index]) { power_supply_put_battery_info(psy, info); - return -ENOMEM; + err = -ENOMEM; + goto out_put_node; } for (i = 0; i < tab_len; i++) { @@ -670,7 +676,9 @@ int power_supply_get_battery_info(struct power_supply *psy, } } - return 0; +out_put_node: + of_node_put(battery_np); + return err; } EXPORT_SYMBOL_GPL(power_supply_get_battery_info); -- cgit v1.2.3 From c11f0b8f226a411915f8d7467bd554a8c9ceec42 Mon Sep 17 00:00:00 2001 From: Chen-Yu Tsai Date: Tue, 16 Apr 2019 14:40:19 +0800 Subject: power: supply: axp20x_usb_power: Fix typo in VBUS current limit macros The VBUS current limit value macros have VBUS typed as VBUC, while the bitmask macro is named correctly. Fix it. Fixes: 69fb4dcada77 ("power: Add an axp20x-usb-power driver") Signed-off-by: Chen-Yu Tsai Signed-off-by: Sebastian Reichel --- drivers/power/supply/axp20x_usb_power.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/axp20x_usb_power.c b/drivers/power/supply/axp20x_usb_power.c index f52fe77edb6f..cd9b90d79839 100644 --- a/drivers/power/supply/axp20x_usb_power.c +++ b/drivers/power/supply/axp20x_usb_power.c @@ -36,10 +36,10 @@ #define AXP20X_VBUS_VHOLD_MASK GENMASK(5, 3) #define AXP20X_VBUS_VHOLD_OFFSET 3 #define AXP20X_VBUS_CLIMIT_MASK 3 -#define AXP20X_VBUC_CLIMIT_900mA 0 -#define AXP20X_VBUC_CLIMIT_500mA 1 -#define AXP20X_VBUC_CLIMIT_100mA 2 -#define AXP20X_VBUC_CLIMIT_NONE 3 +#define AXP20X_VBUS_CLIMIT_900mA 0 +#define AXP20X_VBUS_CLIMIT_500mA 1 +#define AXP20X_VBUS_CLIMIT_100mA 2 +#define AXP20X_VBUS_CLIMIT_NONE 3 #define AXP20X_ADC_EN1_VBUS_CURR BIT(2) #define AXP20X_ADC_EN1_VBUS_VOLT BIT(3) @@ -107,19 +107,19 @@ static int axp20x_usb_power_get_property(struct power_supply *psy, return ret; switch (v & AXP20X_VBUS_CLIMIT_MASK) { - case AXP20X_VBUC_CLIMIT_100mA: + case AXP20X_VBUS_CLIMIT_100mA: if (power->axp20x_id == AXP221_ID) val->intval = -1; /* No 100mA limit */ else val->intval = 100000; break; - case AXP20X_VBUC_CLIMIT_500mA: + case AXP20X_VBUS_CLIMIT_500mA: val->intval = 500000; break; - case AXP20X_VBUC_CLIMIT_900mA: + case AXP20X_VBUS_CLIMIT_900mA: val->intval = 900000; break; - case AXP20X_VBUC_CLIMIT_NONE: + case AXP20X_VBUS_CLIMIT_NONE: val->intval = -1; break; } -- cgit v1.2.3 From 97ec136e7124fa12cf56ce706993e747c5f99a20 Mon Sep 17 00:00:00 2001 From: Chen-Yu Tsai Date: Tue, 16 Apr 2019 14:40:20 +0800 Subject: power: supply: axp20x_usb_power: use polling to detect vbus status change On AXP221 and later AXP PMICs that have the N_VBUSEN pin, when this pin is high, either due to the PMIC driving it high or as an input, the VBUS detection related interrupt mechanisms are disabled. Previously this was worked around in the phy-sun4i-usb driver, which needed to sense VBUS changes and report them to the musb driver in a timely matter. However this workaround was only for the A31 and A33 type USB PHYs. To support newer platforms we would have to enable it for almost all the post-A31 SoCs. However, since this is actually the result of the PMIC's behavior, the workaround would be better if done in the PMIC driver, in this case the VBUS power supply driver. Add the same workqueue-based polling to the VBUS power supply driver. The polling interval is chosen to be the debounce interval from the USB PHY driver, as this short interval is needed in some cases, but the power supply driver would not know when. Signed-off-by: Chen-Yu Tsai Signed-off-by: Sebastian Reichel --- drivers/power/supply/axp20x_usb_power.c | 53 +++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) (limited to 'drivers/power') diff --git a/drivers/power/supply/axp20x_usb_power.c b/drivers/power/supply/axp20x_usb_power.c index cd9b90d79839..290028aed230 100644 --- a/drivers/power/supply/axp20x_usb_power.c +++ b/drivers/power/supply/axp20x_usb_power.c @@ -24,6 +24,7 @@ #include #include #include +#include #define DRVNAME "axp20x-usb-power-supply" @@ -46,6 +47,12 @@ #define AXP20X_VBUS_MON_VBUS_VALID BIT(3) +/* + * Note do not raise the debounce time, we must report Vusb high within + * 100ms otherwise we get Vbus errors in musb. + */ +#define DEBOUNCE_TIME msecs_to_jiffies(50) + struct axp20x_usb_power { struct device_node *np; struct regmap *regmap; @@ -53,6 +60,8 @@ struct axp20x_usb_power { enum axp20x_variants axp20x_id; struct iio_channel *vbus_v; struct iio_channel *vbus_i; + struct delayed_work vbus_detect; + unsigned int old_status; }; static irqreturn_t axp20x_usb_power_irq(int irq, void *devid) @@ -64,6 +73,35 @@ static irqreturn_t axp20x_usb_power_irq(int irq, void *devid) return IRQ_HANDLED; } +static void axp20x_usb_power_poll_vbus(struct work_struct *work) +{ + struct axp20x_usb_power *power = + container_of(work, struct axp20x_usb_power, vbus_detect.work); + unsigned int val; + int ret; + + ret = regmap_read(power->regmap, AXP20X_PWR_INPUT_STATUS, &val); + if (ret) + goto out; + + val &= (AXP20X_PWR_STATUS_VBUS_PRESENT | AXP20X_PWR_STATUS_VBUS_USED); + if (val != power->old_status) + power_supply_changed(power->supply); + + power->old_status = val; + +out: + mod_delayed_work(system_wq, &power->vbus_detect, DEBOUNCE_TIME); +} + +static bool axp20x_usb_vbus_needs_polling(struct axp20x_usb_power *power) +{ + if (power->axp20x_id >= AXP221_ID) + return true; + + return false; +} + static int axp20x_usb_power_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { @@ -357,6 +395,7 @@ static int axp20x_usb_power_probe(struct platform_device *pdev) if (!power) return -ENOMEM; + platform_set_drvdata(pdev, power); power->axp20x_id = (enum axp20x_variants)of_device_get_match_data( &pdev->dev); @@ -415,6 +454,19 @@ static int axp20x_usb_power_probe(struct platform_device *pdev) irq_names[i], ret); } + INIT_DELAYED_WORK(&power->vbus_detect, axp20x_usb_power_poll_vbus); + if (axp20x_usb_vbus_needs_polling(power)) + queue_delayed_work(system_wq, &power->vbus_detect, 0); + + return 0; +} + +static int axp20x_usb_power_remove(struct platform_device *pdev) +{ + struct axp20x_usb_power *power = platform_get_drvdata(pdev); + + cancel_delayed_work_sync(&power->vbus_detect); + return 0; } @@ -434,6 +486,7 @@ MODULE_DEVICE_TABLE(of, axp20x_usb_power_match); static struct platform_driver axp20x_usb_power_driver = { .probe = axp20x_usb_power_probe, + .remove = axp20x_usb_power_remove, .driver = { .name = DRVNAME, .of_match_table = axp20x_usb_power_match, -- cgit v1.2.3 From af7e8d07693712e3944ef0138fc428624e260c78 Mon Sep 17 00:00:00 2001 From: Quentin Schulz Date: Tue, 16 Apr 2019 14:40:21 +0800 Subject: power: supply: axp20x_usb_power: add function to get max current To prepare for a new PMIC, factor out the code responsible of returning the maximum current to axp20x_get_current_max. Signed-off-by: Quentin Schulz Signed-off-by: Chen-Yu Tsai Signed-off-by: Sebastian Reichel --- drivers/power/supply/axp20x_usb_power.c | 52 +++++++++++++++++++-------------- 1 file changed, 30 insertions(+), 22 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/axp20x_usb_power.c b/drivers/power/supply/axp20x_usb_power.c index 290028aed230..04c2cafbe8e6 100644 --- a/drivers/power/supply/axp20x_usb_power.c +++ b/drivers/power/supply/axp20x_usb_power.c @@ -102,6 +102,35 @@ static bool axp20x_usb_vbus_needs_polling(struct axp20x_usb_power *power) return false; } +static int axp20x_get_current_max(struct axp20x_usb_power *power, int *val) +{ + unsigned int v; + int ret = regmap_read(power->regmap, AXP20X_VBUS_IPSOUT_MGMT, &v); + + if (ret) + return ret; + + switch (v & AXP20X_VBUS_CLIMIT_MASK) { + case AXP20X_VBUS_CLIMIT_100mA: + if (power->axp20x_id == AXP221_ID) + *val = -1; /* No 100mA limit */ + else + *val = 100000; + break; + case AXP20X_VBUS_CLIMIT_500mA: + *val = 500000; + break; + case AXP20X_VBUS_CLIMIT_900mA: + *val = 900000; + break; + case AXP20X_VBUS_CLIMIT_NONE: + *val = -1; + break; + } + + return 0; +} + static int axp20x_usb_power_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { @@ -140,28 +169,7 @@ static int axp20x_usb_power_get_property(struct power_supply *psy, val->intval = ret * 1700; /* 1 step = 1.7 mV */ return 0; case POWER_SUPPLY_PROP_CURRENT_MAX: - ret = regmap_read(power->regmap, AXP20X_VBUS_IPSOUT_MGMT, &v); - if (ret) - return ret; - - switch (v & AXP20X_VBUS_CLIMIT_MASK) { - case AXP20X_VBUS_CLIMIT_100mA: - if (power->axp20x_id == AXP221_ID) - val->intval = -1; /* No 100mA limit */ - else - val->intval = 100000; - break; - case AXP20X_VBUS_CLIMIT_500mA: - val->intval = 500000; - break; - case AXP20X_VBUS_CLIMIT_900mA: - val->intval = 900000; - break; - case AXP20X_VBUS_CLIMIT_NONE: - val->intval = -1; - break; - } - return 0; + return axp20x_get_current_max(power, &val->intval); case POWER_SUPPLY_PROP_CURRENT_NOW: if (IS_ENABLED(CONFIG_AXP20X_ADC)) { ret = iio_read_channel_processed(power->vbus_i, -- cgit v1.2.3 From c279adafe6ab333da24e27548e7f119421d9e192 Mon Sep 17 00:00:00 2001 From: Quentin Schulz Date: Tue, 16 Apr 2019 14:40:22 +0800 Subject: power: supply: axp20x_usb_power: add support for AXP813 This adds support for AXP813 PMIC. It is almost the same as AXP22X but has a different current limit. Signed-off-by: Quentin Schulz Signed-off-by: Chen-Yu Tsai Signed-off-by: Sebastian Reichel --- drivers/power/supply/axp20x_usb_power.c | 66 ++++++++++++++++++++++++++++++++- 1 file changed, 65 insertions(+), 1 deletion(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/axp20x_usb_power.c b/drivers/power/supply/axp20x_usb_power.c index 04c2cafbe8e6..d2b1255ee1cc 100644 --- a/drivers/power/supply/axp20x_usb_power.c +++ b/drivers/power/supply/axp20x_usb_power.c @@ -42,6 +42,11 @@ #define AXP20X_VBUS_CLIMIT_100mA 2 #define AXP20X_VBUS_CLIMIT_NONE 3 +#define AXP813_VBUS_CLIMIT_900mA 0 +#define AXP813_VBUS_CLIMIT_1500mA 1 +#define AXP813_VBUS_CLIMIT_2000mA 2 +#define AXP813_VBUS_CLIMIT_2500mA 3 + #define AXP20X_ADC_EN1_VBUS_CURR BIT(2) #define AXP20X_ADC_EN1_VBUS_VOLT BIT(3) @@ -131,6 +136,31 @@ static int axp20x_get_current_max(struct axp20x_usb_power *power, int *val) return 0; } +static int axp813_get_current_max(struct axp20x_usb_power *power, int *val) +{ + unsigned int v; + int ret = regmap_read(power->regmap, AXP20X_VBUS_IPSOUT_MGMT, &v); + + if (ret) + return ret; + + switch (v & AXP20X_VBUS_CLIMIT_MASK) { + case AXP813_VBUS_CLIMIT_900mA: + *val = 900000; + break; + case AXP813_VBUS_CLIMIT_1500mA: + *val = 1500000; + break; + case AXP813_VBUS_CLIMIT_2000mA: + *val = 2000000; + break; + case AXP813_VBUS_CLIMIT_2500mA: + *val = 2500000; + break; + } + return 0; +} + static int axp20x_usb_power_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { @@ -169,6 +199,8 @@ static int axp20x_usb_power_get_property(struct power_supply *psy, val->intval = ret * 1700; /* 1 step = 1.7 mV */ return 0; case POWER_SUPPLY_PROP_CURRENT_MAX: + if (power->axp20x_id == AXP813_ID) + return axp813_get_current_max(power, &val->intval); return axp20x_get_current_max(power, &val->intval); case POWER_SUPPLY_PROP_CURRENT_NOW: if (IS_ENABLED(CONFIG_AXP20X_ADC)) { @@ -260,6 +292,31 @@ static int axp20x_usb_power_set_voltage_min(struct axp20x_usb_power *power, return -EINVAL; } +static int axp813_usb_power_set_current_max(struct axp20x_usb_power *power, + int intval) +{ + int val; + + switch (intval) { + case 900000: + return regmap_update_bits(power->regmap, + AXP20X_VBUS_IPSOUT_MGMT, + AXP20X_VBUS_CLIMIT_MASK, + AXP813_VBUS_CLIMIT_900mA); + case 1500000: + case 2000000: + case 2500000: + val = (intval - 1000000) / 500000; + return regmap_update_bits(power->regmap, + AXP20X_VBUS_IPSOUT_MGMT, + AXP20X_VBUS_CLIMIT_MASK, val); + default: + return -EINVAL; + } + + return -EINVAL; +} + static int axp20x_usb_power_set_current_max(struct axp20x_usb_power *power, int intval) { @@ -294,6 +351,9 @@ static int axp20x_usb_power_set_property(struct power_supply *psy, return axp20x_usb_power_set_voltage_min(power, val->intval); case POWER_SUPPLY_PROP_CURRENT_MAX: + if (power->axp20x_id == AXP813_ID) + return axp813_usb_power_set_current_max(power, + val->intval); return axp20x_usb_power_set_current_max(power, val->intval); default: @@ -429,7 +489,8 @@ static int axp20x_usb_power_probe(struct platform_device *pdev) usb_power_desc = &axp20x_usb_power_desc; irq_names = axp20x_irq_names; } else if (power->axp20x_id == AXP221_ID || - power->axp20x_id == AXP223_ID) { + power->axp20x_id == AXP223_ID || + power->axp20x_id == AXP813_ID) { usb_power_desc = &axp22x_usb_power_desc; irq_names = axp22x_irq_names; } else { @@ -488,6 +549,9 @@ static const struct of_device_id axp20x_usb_power_match[] = { }, { .compatible = "x-powers,axp223-usb-power-supply", .data = (void *)AXP223_ID, + }, { + .compatible = "x-powers,axp813-usb-power-supply", + .data = (void *)AXP813_ID, }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, axp20x_usb_power_match); -- cgit v1.2.3 From fb24ccfbe1e0ae176244733ae300cdab7cc070f7 Mon Sep 17 00:00:00 2001 From: Artur Rojek Date: Thu, 18 Apr 2019 20:24:04 +0200 Subject: power: supply: add Ingenic JZ47xx battery driver. Add a driver for battery present on Ingenic JZ47xx SoCs. Signed-off-by: Artur Rojek Reviewed-by: Jonathan Cameron Signed-off-by: Sebastian Reichel --- drivers/power/supply/Kconfig | 11 ++ drivers/power/supply/Makefile | 1 + drivers/power/supply/ingenic-battery.c | 184 +++++++++++++++++++++++++++++++++ 3 files changed, 196 insertions(+) create mode 100644 drivers/power/supply/ingenic-battery.c (limited to 'drivers/power') diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig index e907521a7166..4728a218656f 100644 --- a/drivers/power/supply/Kconfig +++ b/drivers/power/supply/Kconfig @@ -169,6 +169,17 @@ config BATTERY_COLLIE Say Y to enable support for the battery on the Sharp Zaurus SL-5500 (collie) models. +config BATTERY_INGENIC + tristate "Ingenic JZ47xx SoCs battery driver" + depends on MIPS || COMPILE_TEST + depends on INGENIC_ADC + help + Choose this option if you want to monitor battery status on + Ingenic JZ47xx SoC based devices. + + This driver can also be built as a module. If so, the module will be + called ingenic-battery. + config BATTERY_IPAQ_MICRO tristate "iPAQ Atmel Micro ASIC battery driver" depends on MFD_IPAQ_MICRO diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile index a2b3ab157ca0..39fc3e91e619 100644 --- a/drivers/power/supply/Makefile +++ b/drivers/power/supply/Makefile @@ -34,6 +34,7 @@ obj-$(CONFIG_BATTERY_PMU) += pmu_battery.o obj-$(CONFIG_BATTERY_OLPC) += olpc_battery.o obj-$(CONFIG_BATTERY_TOSA) += tosa_battery.o obj-$(CONFIG_BATTERY_COLLIE) += collie_battery.o +obj-$(CONFIG_BATTERY_INGENIC) += ingenic-battery.o obj-$(CONFIG_BATTERY_IPAQ_MICRO) += ipaq_micro_battery.o obj-$(CONFIG_BATTERY_WM97XX) += wm97xx_battery.o obj-$(CONFIG_BATTERY_SBS) += sbs-battery.o diff --git a/drivers/power/supply/ingenic-battery.c b/drivers/power/supply/ingenic-battery.c new file mode 100644 index 000000000000..35816d4b3012 --- /dev/null +++ b/drivers/power/supply/ingenic-battery.c @@ -0,0 +1,184 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Battery driver for the Ingenic JZ47xx SoCs + * Copyright (c) 2019 Artur Rojek + * + * based on drivers/power/supply/jz4740-battery.c + */ + +#include +#include +#include +#include +#include +#include + +struct ingenic_battery { + struct device *dev; + struct iio_channel *channel; + struct power_supply_desc desc; + struct power_supply *battery; + struct power_supply_battery_info info; +}; + +static int ingenic_battery_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct ingenic_battery *bat = power_supply_get_drvdata(psy); + struct power_supply_battery_info *info = &bat->info; + int ret; + + switch (psp) { + case POWER_SUPPLY_PROP_HEALTH: + ret = iio_read_channel_processed(bat->channel, &val->intval); + val->intval *= 1000; + if (val->intval < info->voltage_min_design_uv) + val->intval = POWER_SUPPLY_HEALTH_DEAD; + else if (val->intval > info->voltage_max_design_uv) + val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE; + else + val->intval = POWER_SUPPLY_HEALTH_GOOD; + return ret; + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + ret = iio_read_channel_processed(bat->channel, &val->intval); + val->intval *= 1000; + return ret; + case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: + val->intval = info->voltage_min_design_uv; + return 0; + case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN: + val->intval = info->voltage_max_design_uv; + return 0; + default: + return -EINVAL; + }; +} + +/* Set the most appropriate IIO channel voltage reference scale + * based on the battery's max voltage. + */ +static int ingenic_battery_set_scale(struct ingenic_battery *bat) +{ + const int *scale_raw; + int scale_len, scale_type, best_idx = -1, best_mV, max_raw, i, ret; + u64 max_mV; + + ret = iio_read_max_channel_raw(bat->channel, &max_raw); + if (ret) { + dev_err(bat->dev, "Unable to read max raw channel value\n"); + return ret; + } + + ret = iio_read_avail_channel_attribute(bat->channel, &scale_raw, + &scale_type, &scale_len, + IIO_CHAN_INFO_SCALE); + if (ret < 0) { + dev_err(bat->dev, "Unable to read channel avail scale\n"); + return ret; + } + if (ret != IIO_AVAIL_LIST || scale_type != IIO_VAL_FRACTIONAL_LOG2) + return -EINVAL; + + max_mV = bat->info.voltage_max_design_uv / 1000; + + for (i = 0; i < scale_len; i += 2) { + u64 scale_mV = (max_raw * scale_raw[i]) >> scale_raw[i + 1]; + + if (scale_mV < max_mV) + continue; + + if (best_idx >= 0 && scale_mV > best_mV) + continue; + + best_mV = scale_mV; + best_idx = i; + } + + if (best_idx < 0) { + dev_err(bat->dev, "Unable to find matching voltage scale\n"); + return -EINVAL; + } + + return iio_write_channel_attribute(bat->channel, + scale_raw[best_idx], + scale_raw[best_idx + 1], + IIO_CHAN_INFO_SCALE); +} + +static enum power_supply_property ingenic_battery_properties[] = { + POWER_SUPPLY_PROP_HEALTH, + POWER_SUPPLY_PROP_VOLTAGE_NOW, + POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, + POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN, +}; + +static int ingenic_battery_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct ingenic_battery *bat; + struct power_supply_config psy_cfg = {}; + struct power_supply_desc *desc; + int ret; + + bat = devm_kzalloc(dev, sizeof(*bat), GFP_KERNEL); + if (!bat) + return -ENOMEM; + + bat->dev = dev; + bat->channel = devm_iio_channel_get(dev, "battery"); + if (IS_ERR(bat->channel)) + return PTR_ERR(bat->channel); + + desc = &bat->desc; + desc->name = "jz-battery"; + desc->type = POWER_SUPPLY_TYPE_BATTERY; + desc->properties = ingenic_battery_properties; + desc->num_properties = ARRAY_SIZE(ingenic_battery_properties); + desc->get_property = ingenic_battery_get_property; + psy_cfg.drv_data = bat; + psy_cfg.of_node = dev->of_node; + + bat->battery = devm_power_supply_register(dev, desc, &psy_cfg); + if (IS_ERR(bat->battery)) { + dev_err(dev, "Unable to register battery\n"); + return PTR_ERR(bat->battery); + } + + ret = power_supply_get_battery_info(bat->battery, &bat->info); + if (ret) { + dev_err(dev, "Unable to get battery info: %d\n", ret); + return ret; + } + if (bat->info.voltage_min_design_uv < 0) { + dev_err(dev, "Unable to get voltage min design\n"); + return bat->info.voltage_min_design_uv; + } + if (bat->info.voltage_max_design_uv < 0) { + dev_err(dev, "Unable to get voltage max design\n"); + return bat->info.voltage_max_design_uv; + } + + return ingenic_battery_set_scale(bat); +} + +#ifdef CONFIG_OF +static const struct of_device_id ingenic_battery_of_match[] = { + { .compatible = "ingenic,jz4740-battery", }, + { }, +}; +MODULE_DEVICE_TABLE(of, ingenic_battery_of_match); +#endif + +static struct platform_driver ingenic_battery_driver = { + .driver = { + .name = "ingenic-battery", + .of_match_table = of_match_ptr(ingenic_battery_of_match), + }, + .probe = ingenic_battery_probe, +}; +module_platform_driver(ingenic_battery_driver); + +MODULE_DESCRIPTION("Battery driver for Ingenic JZ47xx SoCs"); +MODULE_AUTHOR("Artur Rojek "); +MODULE_LICENSE("GPL"); -- cgit v1.2.3 From f7a228eaf4f8aa54c223a763d80bed5dcb072499 Mon Sep 17 00:00:00 2001 From: Lubomir Rintel Date: Thu, 18 Apr 2019 16:46:50 +0200 Subject: power: supply: olpc_battery: Use DT to get battery version Avoid using the x86 OLPC platform specific call to get the board version. That wouldn't work on FDT-based ARM MMP2 platform. Add the XO 1.5 compatible string too. This is actually not completely necessary as the battery nodes on XO 1.5 claim to be compatible with "olpc,xo1-battery", but there are, in fact, differencies. Signed-off-by: Lubomir Rintel Reviewed-by: Andy Shevchenko Acked-by: Pavel Machek Signed-off-by: Sebastian Reichel --- drivers/power/supply/olpc_battery.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/olpc_battery.c b/drivers/power/supply/olpc_battery.c index 5a97e42a3547..3dcf5e19f329 100644 --- a/drivers/power/supply/olpc_battery.c +++ b/drivers/power/supply/olpc_battery.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -622,11 +623,12 @@ static int olpc_battery_probe(struct platform_device *pdev) olpc_ac = power_supply_register(&pdev->dev, &olpc_ac_desc, NULL); if (IS_ERR(olpc_ac)) return PTR_ERR(olpc_ac); - - if (olpc_board_at_least(olpc_board_pre(0xd0))) { /* XO-1.5 */ + if (of_device_is_compatible(pdev->dev.of_node, "olpc,xo1.5-battery")) { + /* XO-1.5 */ olpc_bat_desc.properties = olpc_xo15_bat_props; olpc_bat_desc.num_properties = ARRAY_SIZE(olpc_xo15_bat_props); - } else { /* XO-1 */ + } else { + /* XO-1 */ olpc_bat_desc.properties = olpc_xo1_bat_props; olpc_bat_desc.num_properties = ARRAY_SIZE(olpc_xo1_bat_props); } @@ -672,6 +674,7 @@ static int olpc_battery_remove(struct platform_device *pdev) static const struct of_device_id olpc_battery_ids[] = { { .compatible = "olpc,xo1-battery" }, + { .compatible = "olpc,xo1.5-battery" }, {} }; MODULE_DEVICE_TABLE(of, olpc_battery_ids); -- cgit v1.2.3 From 33554d818a9562f47ba0de3edb35346ccf7c8c1b Mon Sep 17 00:00:00 2001 From: Lubomir Rintel Date: Thu, 18 Apr 2019 16:46:51 +0200 Subject: power: supply: olpc_battery: Move priv data to a struct The global variables for private data are not too nice. I'd like some more, and that would clutter the global name space even further. Signed-off-by: Lubomir Rintel Reviewed-by: Andy Shevchenko Signed-off-by: Sebastian Reichel --- drivers/power/supply/olpc_battery.c | 78 +++++++++++++++++++++++-------------- 1 file changed, 48 insertions(+), 30 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/olpc_battery.c b/drivers/power/supply/olpc_battery.c index 3dcf5e19f329..f7bb9bedd893 100644 --- a/drivers/power/supply/olpc_battery.c +++ b/drivers/power/supply/olpc_battery.c @@ -53,6 +53,12 @@ #define BAT_ADDR_MFR_TYPE 0x5F +struct olpc_battery_data { + struct power_supply *olpc_ac; + struct power_supply *olpc_bat; + char bat_serial[17]; +}; + /********************************************************************* * Power *********************************************************************/ @@ -91,11 +97,8 @@ static const struct power_supply_desc olpc_ac_desc = { .get_property = olpc_ac_get_prop, }; -static struct power_supply *olpc_ac; - -static char bat_serial[17]; /* Ick */ - -static int olpc_bat_get_status(union power_supply_propval *val, uint8_t ec_byte) +static int olpc_bat_get_status(struct olpc_battery_data *data, + union power_supply_propval *val, uint8_t ec_byte) { if (olpc_platform_info.ecver > 0x44) { if (ec_byte & (BAT_STAT_CHARGING | BAT_STAT_TRICKLE)) @@ -326,6 +329,7 @@ static int olpc_bat_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { + struct olpc_battery_data *data = power_supply_get_drvdata(psy); int ret = 0; __be16 ec_word; uint8_t ec_byte; @@ -347,7 +351,7 @@ static int olpc_bat_get_property(struct power_supply *psy, switch (psp) { case POWER_SUPPLY_PROP_STATUS: - ret = olpc_bat_get_status(val, ec_byte); + ret = olpc_bat_get_status(data, val, ec_byte); if (ret) return ret; break; @@ -450,8 +454,8 @@ static int olpc_bat_get_property(struct power_supply *psy, if (ret) return ret; - sprintf(bat_serial, "%016llx", (long long)be64_to_cpu(ser_buf)); - val->strval = bat_serial; + sprintf(data->bat_serial, "%016llx", (long long)be64_to_cpu(ser_buf)); + val->strval = data->bat_serial; break; case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN: ret = olpc_bat_get_voltage_max_design(val); @@ -579,17 +583,17 @@ static struct power_supply_desc olpc_bat_desc = { .use_for_apm = 1, }; -static struct power_supply *olpc_bat; - static int olpc_battery_suspend(struct platform_device *pdev, pm_message_t state) { - if (device_may_wakeup(&olpc_ac->dev)) + struct olpc_battery_data *data = platform_get_drvdata(pdev); + + if (device_may_wakeup(&data->olpc_ac->dev)) olpc_ec_wakeup_set(EC_SCI_SRC_ACPWR); else olpc_ec_wakeup_clear(EC_SCI_SRC_ACPWR); - if (device_may_wakeup(&olpc_bat->dev)) + if (device_may_wakeup(&data->olpc_bat->dev)) olpc_ec_wakeup_set(EC_SCI_SRC_BATTERY | EC_SCI_SRC_BATSOC | EC_SCI_SRC_BATERR); else @@ -601,8 +605,15 @@ static int olpc_battery_suspend(struct platform_device *pdev, static int olpc_battery_probe(struct platform_device *pdev) { - int ret; + struct power_supply_config psy_cfg = {}; + struct olpc_battery_data *data; uint8_t status; + int ret; + + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + platform_set_drvdata(pdev, data); /* * We've seen a number of EC protocol changes; this driver requires @@ -620,9 +631,13 @@ static int olpc_battery_probe(struct platform_device *pdev) /* Ignore the status. It doesn't actually matter */ - olpc_ac = power_supply_register(&pdev->dev, &olpc_ac_desc, NULL); - if (IS_ERR(olpc_ac)) - return PTR_ERR(olpc_ac); + psy_cfg.of_node = pdev->dev.of_node; + psy_cfg.drv_data = data; + + data->olpc_ac = power_supply_register(&pdev->dev, &olpc_ac_desc, &psy_cfg); + if (IS_ERR(data->olpc_ac)) + return PTR_ERR(data->olpc_ac); + if (of_device_is_compatible(pdev->dev.of_node, "olpc,xo1.5-battery")) { /* XO-1.5 */ olpc_bat_desc.properties = olpc_xo15_bat_props; @@ -633,42 +648,45 @@ static int olpc_battery_probe(struct platform_device *pdev) olpc_bat_desc.num_properties = ARRAY_SIZE(olpc_xo1_bat_props); } - olpc_bat = power_supply_register(&pdev->dev, &olpc_bat_desc, NULL); - if (IS_ERR(olpc_bat)) { - ret = PTR_ERR(olpc_bat); + data->olpc_bat = power_supply_register(&pdev->dev, &olpc_bat_desc, &psy_cfg); + if (IS_ERR(data->olpc_bat)) { + ret = PTR_ERR(data->olpc_bat); goto battery_failed; } - ret = device_create_bin_file(&olpc_bat->dev, &olpc_bat_eeprom); + ret = device_create_bin_file(&data->olpc_bat->dev, &olpc_bat_eeprom); if (ret) goto eeprom_failed; - ret = device_create_file(&olpc_bat->dev, &olpc_bat_error); + ret = device_create_file(&data->olpc_bat->dev, &olpc_bat_error); if (ret) goto error_failed; if (olpc_ec_wakeup_available()) { - device_set_wakeup_capable(&olpc_ac->dev, true); - device_set_wakeup_capable(&olpc_bat->dev, true); + device_set_wakeup_capable(&data->olpc_ac->dev, true); + device_set_wakeup_capable(&data->olpc_bat->dev, true); } return 0; error_failed: - device_remove_bin_file(&olpc_bat->dev, &olpc_bat_eeprom); + device_remove_bin_file(&data->olpc_bat->dev, &olpc_bat_eeprom); eeprom_failed: - power_supply_unregister(olpc_bat); + power_supply_unregister(data->olpc_bat); battery_failed: - power_supply_unregister(olpc_ac); + power_supply_unregister(data->olpc_ac); return ret; } static int olpc_battery_remove(struct platform_device *pdev) { - device_remove_file(&olpc_bat->dev, &olpc_bat_error); - device_remove_bin_file(&olpc_bat->dev, &olpc_bat_eeprom); - power_supply_unregister(olpc_bat); - power_supply_unregister(olpc_ac); + struct olpc_battery_data *data = platform_get_drvdata(pdev); + + device_remove_file(&data->olpc_bat->dev, &olpc_bat_error); + device_remove_bin_file(&data->olpc_bat->dev, &olpc_bat_eeprom); + power_supply_unregister(data->olpc_bat); + power_supply_unregister(data->olpc_ac); + return 0; } -- cgit v1.2.3 From b0280d05804ae86514f5abca427e360e33fed1bb Mon Sep 17 00:00:00 2001 From: Lubomir Rintel Date: Thu, 18 Apr 2019 16:46:52 +0200 Subject: power: supply: olpc_battery: Use devm_power_supply_register() This simplifies the error handling. Signed-off-by: Lubomir Rintel Signed-off-by: Sebastian Reichel --- drivers/power/supply/olpc_battery.c | 19 +++++-------------- 1 file changed, 5 insertions(+), 14 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/olpc_battery.c b/drivers/power/supply/olpc_battery.c index f7bb9bedd893..d83c77c2a0ec 100644 --- a/drivers/power/supply/olpc_battery.c +++ b/drivers/power/supply/olpc_battery.c @@ -634,7 +634,7 @@ static int olpc_battery_probe(struct platform_device *pdev) psy_cfg.of_node = pdev->dev.of_node; psy_cfg.drv_data = data; - data->olpc_ac = power_supply_register(&pdev->dev, &olpc_ac_desc, &psy_cfg); + data->olpc_ac = devm_power_supply_register(&pdev->dev, &olpc_ac_desc, &psy_cfg); if (IS_ERR(data->olpc_ac)) return PTR_ERR(data->olpc_ac); @@ -648,15 +648,13 @@ static int olpc_battery_probe(struct platform_device *pdev) olpc_bat_desc.num_properties = ARRAY_SIZE(olpc_xo1_bat_props); } - data->olpc_bat = power_supply_register(&pdev->dev, &olpc_bat_desc, &psy_cfg); - if (IS_ERR(data->olpc_bat)) { - ret = PTR_ERR(data->olpc_bat); - goto battery_failed; - } + data->olpc_bat = devm_power_supply_register(&pdev->dev, &olpc_bat_desc, &psy_cfg); + if (IS_ERR(data->olpc_bat)) + return PTR_ERR(data->olpc_bat); ret = device_create_bin_file(&data->olpc_bat->dev, &olpc_bat_eeprom); if (ret) - goto eeprom_failed; + return ret; ret = device_create_file(&data->olpc_bat->dev, &olpc_bat_error); if (ret) @@ -671,10 +669,6 @@ static int olpc_battery_probe(struct platform_device *pdev) error_failed: device_remove_bin_file(&data->olpc_bat->dev, &olpc_bat_eeprom); -eeprom_failed: - power_supply_unregister(data->olpc_bat); -battery_failed: - power_supply_unregister(data->olpc_ac); return ret; } @@ -684,9 +678,6 @@ static int olpc_battery_remove(struct platform_device *pdev) device_remove_file(&data->olpc_bat->dev, &olpc_bat_error); device_remove_bin_file(&data->olpc_bat->dev, &olpc_bat_eeprom); - power_supply_unregister(data->olpc_bat); - power_supply_unregister(data->olpc_ac); - return 0; } -- cgit v1.2.3 From 8ecefda22262030651575a047078045866cedb82 Mon Sep 17 00:00:00 2001 From: Lubomir Rintel Date: Thu, 18 Apr 2019 16:46:53 +0200 Subject: power: supply: olpc_battery: Avoid using platform_info This wouldn't work on the DT-based ARM platform. Let's read the EC version directly from the EC driver instead. This removes x86 specific bits that would prevent this driver from being used with the EC of ARM-based OLPC XO 1.75. Signed-off-by: Lubomir Rintel Acked-by: Pavel Machek Signed-off-by: Sebastian Reichel --- drivers/power/supply/olpc_battery.c | 24 +++++++++++++++++------- 1 file changed, 17 insertions(+), 7 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/olpc_battery.c b/drivers/power/supply/olpc_battery.c index d83c77c2a0ec..8be44c717d85 100644 --- a/drivers/power/supply/olpc_battery.c +++ b/drivers/power/supply/olpc_battery.c @@ -57,6 +57,7 @@ struct olpc_battery_data { struct power_supply *olpc_ac; struct power_supply *olpc_bat; char bat_serial[17]; + bool new_proto; }; /********************************************************************* @@ -100,7 +101,7 @@ static const struct power_supply_desc olpc_ac_desc = { static int olpc_bat_get_status(struct olpc_battery_data *data, union power_supply_propval *val, uint8_t ec_byte) { - if (olpc_platform_info.ecver > 0x44) { + if (data->new_proto) { if (ec_byte & (BAT_STAT_CHARGING | BAT_STAT_TRICKLE)) val->intval = POWER_SUPPLY_STATUS_CHARGING; else if (ec_byte & BAT_STAT_DISCHARGING) @@ -608,6 +609,7 @@ static int olpc_battery_probe(struct platform_device *pdev) struct power_supply_config psy_cfg = {}; struct olpc_battery_data *data; uint8_t status; + uint8_t ecver; int ret; data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); @@ -615,13 +617,21 @@ static int olpc_battery_probe(struct platform_device *pdev) return -ENOMEM; platform_set_drvdata(pdev, data); - /* - * We've seen a number of EC protocol changes; this driver requires - * the latest EC protocol, supported by 0x44 and above. - */ - if (olpc_platform_info.ecver < 0x44) { + /* See if the EC is already there and get the EC revision */ + ret = olpc_ec_cmd(EC_FIRMWARE_REV, NULL, 0, &ecver, 1); + if (ret) + return ret; + + if (ecver > 0x44) { + /* XO 1 or 1.5 with a new EC firmware. */ + data->new_proto = true; + } else if (ecver < 0x44) { + /* + * We've seen a number of EC protocol changes; this driver + * requires the latest EC protocol, supported by 0x44 and above. + */ printk(KERN_NOTICE "OLPC EC version 0x%02x too old for " - "battery driver.\n", olpc_platform_info.ecver); + "battery driver.\n", ecver); return -ENXIO; } -- cgit v1.2.3 From 76311b9a329554f592e1ddfe8d8f94feb6e0e663 Mon Sep 17 00:00:00 2001 From: Lubomir Rintel Date: Thu, 18 Apr 2019 16:46:54 +0200 Subject: power: supply: olpc_battery: Add OLPC XO 1.75 support The battery and the protocol are essentially the same as OLPC XO 1.5, but the responses from the EC are LSB first. Signed-off-by: Lubomir Rintel Acked-by: Pavel Machek Signed-off-by: Sebastian Reichel --- drivers/power/supply/olpc_battery.c | 25 +++++++++++++++++++------ 1 file changed, 19 insertions(+), 6 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/olpc_battery.c b/drivers/power/supply/olpc_battery.c index 8be44c717d85..0d67158c13d6 100644 --- a/drivers/power/supply/olpc_battery.c +++ b/drivers/power/supply/olpc_battery.c @@ -58,6 +58,7 @@ struct olpc_battery_data { struct power_supply *olpc_bat; char bat_serial[17]; bool new_proto; + bool little_endian; }; /********************************************************************* @@ -323,6 +324,14 @@ static int olpc_bat_get_voltage_max_design(union power_supply_propval *val) return ret; } +static u16 ecword_to_cpu(struct olpc_battery_data *data, u16 ec_word) +{ + if (data->little_endian) + return le16_to_cpu(ec_word); + else + return be16_to_cpu(ec_word); +} + /********************************************************************* * Battery properties *********************************************************************/ @@ -395,7 +404,7 @@ static int olpc_bat_get_property(struct power_supply *psy, if (ret) return ret; - val->intval = (s16)be16_to_cpu(ec_word) * 9760L / 32; + val->intval = ecword_to_cpu(data, ec_word) * 9760L / 32; break; case POWER_SUPPLY_PROP_CURRENT_AVG: case POWER_SUPPLY_PROP_CURRENT_NOW: @@ -403,7 +412,7 @@ static int olpc_bat_get_property(struct power_supply *psy, if (ret) return ret; - val->intval = (s16)be16_to_cpu(ec_word) * 15625L / 120; + val->intval = ecword_to_cpu(data, ec_word) * 15625L / 120; break; case POWER_SUPPLY_PROP_CAPACITY: ret = olpc_ec_cmd(EC_BAT_SOC, NULL, 0, &ec_byte, 1); @@ -434,21 +443,21 @@ static int olpc_bat_get_property(struct power_supply *psy, if (ret) return ret; - val->intval = (s16)be16_to_cpu(ec_word) * 10 / 256; + val->intval = ecword_to_cpu(data, ec_word) * 10 / 256; break; case POWER_SUPPLY_PROP_TEMP_AMBIENT: ret = olpc_ec_cmd(EC_AMB_TEMP, NULL, 0, (void *)&ec_word, 2); if (ret) return ret; - val->intval = (int)be16_to_cpu(ec_word) * 10 / 256; + val->intval = (int)ecword_to_cpu(data, ec_word) * 10 / 256; break; case POWER_SUPPLY_PROP_CHARGE_COUNTER: ret = olpc_ec_cmd(EC_BAT_ACR, NULL, 0, (void *)&ec_word, 2); if (ret) return ret; - val->intval = (s16)be16_to_cpu(ec_word) * 6250 / 15; + val->intval = ecword_to_cpu(data, ec_word) * 6250 / 15; break; case POWER_SUPPLY_PROP_SERIAL_NUMBER: ret = olpc_ec_cmd(EC_BAT_SERIAL, NULL, 0, (void *)&ser_buf, 8); @@ -622,7 +631,11 @@ static int olpc_battery_probe(struct platform_device *pdev) if (ret) return ret; - if (ecver > 0x44) { + if (of_find_compatible_node(NULL, NULL, "olpc,xo1.75-ec")) { + /* XO 1.75 */ + data->new_proto = true; + data->little_endian = true; + } else if (ecver > 0x44) { /* XO 1 or 1.5 with a new EC firmware. */ data->new_proto = true; } else if (ecver < 0x44) { -- cgit v1.2.3 From 31e220877981d0005d0c4a76f68027a73131212b Mon Sep 17 00:00:00 2001 From: Lubomir Rintel Date: Thu, 18 Apr 2019 16:46:55 +0200 Subject: power: supply: olpc_battery: Have the framework register sysfs files for us The power framework gained ability to register groups of sysfs attributes in commit cef8fe6a382c ("power: supply: core: add support for custom sysfs attributes"). Signed-off-by: Lubomir Rintel Suggested-by: Sebastian Reichel Signed-off-by: Sebastian Reichel --- drivers/power/supply/olpc_battery.c | 64 ++++++++++++++++++++----------------- 1 file changed, 35 insertions(+), 29 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/olpc_battery.c b/drivers/power/supply/olpc_battery.c index 0d67158c13d6..c628d3a47e14 100644 --- a/drivers/power/supply/olpc_battery.c +++ b/drivers/power/supply/olpc_battery.c @@ -551,7 +551,7 @@ static ssize_t olpc_bat_eeprom_read(struct file *filp, struct kobject *kobj, return count; } -static const struct bin_attribute olpc_bat_eeprom = { +static struct bin_attribute olpc_bat_eeprom = { .attr = { .name = "eeprom", .mode = S_IRUGO, @@ -575,7 +575,7 @@ static ssize_t olpc_bat_error_read(struct device *dev, return sprintf(buf, "%d\n", ec_byte); } -static const struct device_attribute olpc_bat_error = { +static struct device_attribute olpc_bat_error = { .attr = { .name = "error", .mode = S_IRUGO, @@ -583,6 +583,27 @@ static const struct device_attribute olpc_bat_error = { .show = olpc_bat_error_read, }; +static struct attribute *olpc_bat_sysfs_attrs[] = { + &olpc_bat_error.attr, + NULL +}; + +static struct bin_attribute *olpc_bat_sysfs_bin_attrs[] = { + &olpc_bat_eeprom, + NULL +}; + +static const struct attribute_group olpc_bat_sysfs_group = { + .attrs = olpc_bat_sysfs_attrs, + .bin_attrs = olpc_bat_sysfs_bin_attrs, + +}; + +static const struct attribute_group *olpc_bat_sysfs_groups[] = { + &olpc_bat_sysfs_group, + NULL +}; + /********************************************************************* * Initialisation *********************************************************************/ @@ -615,7 +636,8 @@ static int olpc_battery_suspend(struct platform_device *pdev, static int olpc_battery_probe(struct platform_device *pdev) { - struct power_supply_config psy_cfg = {}; + struct power_supply_config bat_psy_cfg = {}; + struct power_supply_config ac_psy_cfg = {}; struct olpc_battery_data *data; uint8_t status; uint8_t ecver; @@ -654,10 +676,11 @@ static int olpc_battery_probe(struct platform_device *pdev) /* Ignore the status. It doesn't actually matter */ - psy_cfg.of_node = pdev->dev.of_node; - psy_cfg.drv_data = data; + ac_psy_cfg.of_node = pdev->dev.of_node; + ac_psy_cfg.drv_data = data; - data->olpc_ac = devm_power_supply_register(&pdev->dev, &olpc_ac_desc, &psy_cfg); + data->olpc_ac = devm_power_supply_register(&pdev->dev, &olpc_ac_desc, + &ac_psy_cfg); if (IS_ERR(data->olpc_ac)) return PTR_ERR(data->olpc_ac); @@ -671,37 +694,21 @@ static int olpc_battery_probe(struct platform_device *pdev) olpc_bat_desc.num_properties = ARRAY_SIZE(olpc_xo1_bat_props); } - data->olpc_bat = devm_power_supply_register(&pdev->dev, &olpc_bat_desc, &psy_cfg); + bat_psy_cfg.of_node = pdev->dev.of_node; + bat_psy_cfg.drv_data = data; + bat_psy_cfg.attr_grp = olpc_bat_sysfs_groups; + + data->olpc_bat = devm_power_supply_register(&pdev->dev, &olpc_bat_desc, + &bat_psy_cfg); if (IS_ERR(data->olpc_bat)) return PTR_ERR(data->olpc_bat); - ret = device_create_bin_file(&data->olpc_bat->dev, &olpc_bat_eeprom); - if (ret) - return ret; - - ret = device_create_file(&data->olpc_bat->dev, &olpc_bat_error); - if (ret) - goto error_failed; - if (olpc_ec_wakeup_available()) { device_set_wakeup_capable(&data->olpc_ac->dev, true); device_set_wakeup_capable(&data->olpc_bat->dev, true); } return 0; - -error_failed: - device_remove_bin_file(&data->olpc_bat->dev, &olpc_bat_eeprom); - return ret; -} - -static int olpc_battery_remove(struct platform_device *pdev) -{ - struct olpc_battery_data *data = platform_get_drvdata(pdev); - - device_remove_file(&data->olpc_bat->dev, &olpc_bat_error); - device_remove_bin_file(&data->olpc_bat->dev, &olpc_bat_eeprom); - return 0; } static const struct of_device_id olpc_battery_ids[] = { @@ -717,7 +724,6 @@ static struct platform_driver olpc_battery_driver = { .of_match_table = olpc_battery_ids, }, .probe = olpc_battery_probe, - .remove = olpc_battery_remove, .suspend = olpc_battery_suspend, }; -- cgit v1.2.3 From 243f8ffc883a120516b1280c799b2e5081169efd Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Fri, 26 Apr 2019 11:59:02 +0200 Subject: power: supply: bq27xxx_battery: Notify also about status changes MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit User-space might be interested in receiving uevents when the charging starts/stops or if conditions of battery changes (e.g. over-temperature). Notify about changes in battery also when the flags change, not only SoC. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Pali Rohár Signed-off-by: Sebastian Reichel --- drivers/power/supply/bq27xxx_battery.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/bq27xxx_battery.c b/drivers/power/supply/bq27xxx_battery.c index 29b3a4056865..195c18c2f426 100644 --- a/drivers/power/supply/bq27xxx_battery.c +++ b/drivers/power/supply/bq27xxx_battery.c @@ -1612,7 +1612,8 @@ void bq27xxx_battery_update(struct bq27xxx_device_info *di) di->charge_design_full = bq27xxx_battery_read_dcap(di); } - if (di->cache.capacity != cache.capacity) + if ((di->cache.capacity != cache.capacity) || + (di->cache.flags != cache.flags)) power_supply_changed(di->bat); if (memcmp(&di->cache, &cache, sizeof(cache)) != 0) -- cgit v1.2.3 From 9274c78305e12c5f461bec15f49c38e0f32ca705 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Mon, 22 Apr 2019 22:43:01 +0200 Subject: power: supply: axp288_fuel_gauge: Add ACEPC T8 and T11 mini PCs to the blacklist The ACEPC T8 and T11 Cherry Trail Z8350 mini PCs use an AXP288 and as PCs, rather then portables, they does not have a battery. Still for some reason the AXP288 not only thinks there is a battery, it actually thinks it is discharging while the PC is running, slowly going to 0% full, causing userspace to shutdown the system due to the battery being critically low after a while. This commit adds the ACEPC T8 and T11 to the axp288 fuel-gauge driver blacklist, so that we stop reporting bogus battery readings on this device. BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1690852 Cc: stable@vger.kernel.org Signed-off-by: Hans de Goede Signed-off-by: Sebastian Reichel --- drivers/power/supply/axp288_fuel_gauge.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'drivers/power') diff --git a/drivers/power/supply/axp288_fuel_gauge.c b/drivers/power/supply/axp288_fuel_gauge.c index 9ff2461820d8..368281bc0d2b 100644 --- a/drivers/power/supply/axp288_fuel_gauge.c +++ b/drivers/power/supply/axp288_fuel_gauge.c @@ -685,6 +685,26 @@ intr_failed: * detection reports one despite it not being there. */ static const struct dmi_system_id axp288_fuel_gauge_blacklist[] = { + { + /* ACEPC T8 Cherry Trail Z8350 mini PC */ + .matches = { + DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "To be filled by O.E.M."), + DMI_EXACT_MATCH(DMI_BOARD_NAME, "Cherry Trail CR"), + DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "T8"), + /* also match on somewhat unique bios-version */ + DMI_EXACT_MATCH(DMI_BIOS_VERSION, "1.000"), + }, + }, + { + /* ACEPC T11 Cherry Trail Z8350 mini PC */ + .matches = { + DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "To be filled by O.E.M."), + DMI_EXACT_MATCH(DMI_BOARD_NAME, "Cherry Trail CR"), + DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "T11"), + /* also match on somewhat unique bios-version */ + DMI_EXACT_MATCH(DMI_BIOS_VERSION, "1.000"), + }, + }, { /* Intel Cherry Trail Compute Stick, Windows version */ .matches = { -- cgit v1.2.3 From ba6cc85084178e5bce50f6a00411e457c21c47df Mon Sep 17 00:00:00 2001 From: Nick Crews Date: Thu, 18 Apr 2019 10:43:12 -0600 Subject: power: supply: core: Add Standard, Adaptive, and Custom charge types Add "Standard", "Adaptive", and "Custom" modes to the charge_type property, to expand the existing "Trickle" and "Fast" modes. I am adding them in order to support a new Chrome OS device, but these properties should be general enough that they can be used on other devices. The meaning of "Standard" is obvious, but "Adaptive" and "Custom" are more tricky: "Adaptive" means that the charge controller uses some custom algorithm to change the charge type automatically, with no configuration needed. "Custom" means that the charge controller uses the POWER_SUPPLY_PROP_CHARGE_CONTROL_* properties as configuration for some other algorithm. v5 changes: - Split up adding the charge types and adding the POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD and POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD properties into two different commits. v4 changes: - Add documentation for the new properties, and add documentation for the the previously missing charge_control_limit and charge_control_limit_max properties. Signed-off-by: Nick Crews Reviewed-by: Enric Balletbo i Serra Signed-off-by: Sebastian Reichel --- Documentation/ABI/testing/sysfs-class-power | 12 +++++++++--- drivers/power/supply/power_supply_sysfs.c | 2 +- include/linux/power_supply.h | 8 ++++++-- 3 files changed, 16 insertions(+), 6 deletions(-) (limited to 'drivers/power') diff --git a/Documentation/ABI/testing/sysfs-class-power b/Documentation/ABI/testing/sysfs-class-power index 5e23e22dce1b..544c4e0ef8b6 100644 --- a/Documentation/ABI/testing/sysfs-class-power +++ b/Documentation/ABI/testing/sysfs-class-power @@ -119,10 +119,16 @@ Date: July 2009 Contact: linux-pm@vger.kernel.org Description: Represents the type of charging currently being applied to the - battery. + battery. "Trickle", "Fast", and "Standard" all mean different + charging speeds. "Adaptive" means that the charger uses some + algorithm to adjust the charge rate dynamically, without + any user configuration required. "Custom" means that the charger + uses the charge_control_* properties as configuration for some + different algorithm. - Access: Read - Valid values: "Unknown", "N/A", "Trickle", "Fast" + Access: Read, Write + Valid values: "Unknown", "N/A", "Trickle", "Fast", "Standard", + "Adaptive", "Custom" What: /sys/class/power_supply//charge_term_current Date: July 2014 diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supply/power_supply_sysfs.c index dce24f596160..64dff5cfecc3 100644 --- a/drivers/power/supply/power_supply_sysfs.c +++ b/drivers/power/supply/power_supply_sysfs.c @@ -56,7 +56,7 @@ static const char * const power_supply_status_text[] = { }; static const char * const power_supply_charge_type_text[] = { - "Unknown", "N/A", "Trickle", "Fast" + "Unknown", "N/A", "Trickle", "Fast", "Standard", "Adaptive", "Custom" }; static const char * const power_supply_health_text[] = { diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index 2f9c201a54d1..e86e05d8134d 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -40,11 +40,15 @@ enum { POWER_SUPPLY_STATUS_FULL, }; +/* What algorithm is the charger using? */ enum { POWER_SUPPLY_CHARGE_TYPE_UNKNOWN = 0, POWER_SUPPLY_CHARGE_TYPE_NONE, - POWER_SUPPLY_CHARGE_TYPE_TRICKLE, - POWER_SUPPLY_CHARGE_TYPE_FAST, + POWER_SUPPLY_CHARGE_TYPE_TRICKLE, /* slow speed */ + POWER_SUPPLY_CHARGE_TYPE_FAST, /* fast speed */ + POWER_SUPPLY_CHARGE_TYPE_STANDARD, /* normal speed */ + POWER_SUPPLY_CHARGE_TYPE_ADAPTIVE, /* dynamically adjusted speed */ + POWER_SUPPLY_CHARGE_TYPE_CUSTOM, /* use CHARGE_CONTROL_* props */ }; enum { -- cgit v1.2.3 From 813cab8f3994250e136819ae48fbd1c95d980466 Mon Sep 17 00:00:00 2001 From: Nick Crews Date: Thu, 18 Apr 2019 10:43:13 -0600 Subject: power: supply: core: Add CHARGE_CONTROL_{START_THRESHOLD,END_THRESHOLD} properties Add POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD and POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD properties, to expand the existing CHARGE_CONTROL_* properties. I am adding them in order to support a new Chrome OS device, but these properties should be general enough that they can be used on other devices. When the charge_type is "Custom", the charge controller uses the POWER_SUPPLY_PROP_CHARGE_CONTROL_* properties as configuration for some other algorithm. For example, in the use case that I am supporting, this means the battery begins charging when the percentage level drops below POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD and charging ceases when the percentage level goes above POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD. v5 changes: - Add the other missing CHARGE_CONTROL_* properties documentation in a separate commit - Split up adding the charge types and adding the POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD and POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD properties into two different commits. v4 changes: - Add documentation for the new properties, and add documentation for the the previously missing charge_control_limit and charge_control_limit_max properties. Signed-off-by: Nick Crews Reviewed-by: Enric Balletbo i Serra Signed-off-by: Sebastian Reichel --- Documentation/ABI/testing/sysfs-class-power | 20 ++++++++++++++++++++ drivers/power/supply/power_supply_sysfs.c | 2 ++ include/linux/power_supply.h | 2 ++ 3 files changed, 24 insertions(+) (limited to 'drivers/power') diff --git a/Documentation/ABI/testing/sysfs-class-power b/Documentation/ABI/testing/sysfs-class-power index 544c4e0ef8b6..a5b144f61de8 100644 --- a/Documentation/ABI/testing/sysfs-class-power +++ b/Documentation/ABI/testing/sysfs-class-power @@ -114,6 +114,26 @@ Description: Access: Read Valid values: Represented in microamps +What: /sys/class/power_supply//charge_control_start_threshold +Date: April 2019 +Contact: linux-pm@vger.kernel.org +Description: + Represents a battery percentage level, below which charging will + begin. + + Access: Read, Write + Valid values: 0 - 100 (percent) + +What: /sys/class/power_supply//charge_control_end_threshold +Date: April 2019 +Contact: linux-pm@vger.kernel.org +Description: + Represents a battery percentage level, above which charging will + stop. + + Access: Read, Write + Valid values: 0 - 100 (percent) + What: /sys/class/power_supply//charge_type Date: July 2009 Contact: linux-pm@vger.kernel.org diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supply/power_supply_sysfs.c index 64dff5cfecc3..6104a3f03d46 100644 --- a/drivers/power/supply/power_supply_sysfs.c +++ b/drivers/power/supply/power_supply_sysfs.c @@ -274,6 +274,8 @@ static struct device_attribute power_supply_attrs[] = { POWER_SUPPLY_ATTR(constant_charge_voltage_max), POWER_SUPPLY_ATTR(charge_control_limit), POWER_SUPPLY_ATTR(charge_control_limit_max), + POWER_SUPPLY_ATTR(charge_control_start_threshold), + POWER_SUPPLY_ATTR(charge_control_end_threshold), POWER_SUPPLY_ATTR(input_current_limit), POWER_SUPPLY_ATTR(energy_full_design), POWER_SUPPLY_ATTR(energy_empty_design), diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index e86e05d8134d..d59205170232 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -125,6 +125,8 @@ enum power_supply_property { POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX, POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT, POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX, + POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD, /* in percents! */ + POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD, /* in percents! */ POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN, -- cgit v1.2.3 From caee28498ec35f0320a1b1eabbdfa3563cccdf4b Mon Sep 17 00:00:00 2001 From: Phong Tran Date: Thu, 2 May 2019 08:27:06 +0700 Subject: power: supply: core: fix clang -Wunsequenced The increment operator of pointer in be32_to_cpu() is not explicitly. It made the warning from clang: drivers/power/supply/power_supply_core.c:674:36: error: multiple unsequenced modifications to 'list' [-Werror,-Wunsequenced] drivers/power/supply/power_supply_core.c:675:41: error: multiple unsequenced modifications to 'list' [-Werror,-Wunsequenced] Link: https://github.com/ClangBuiltLinux/linux/issues/460 Signed-off-by: Phong Tran Reviewed-by: Nick Desaulniers Signed-off-by: Sebastian Reichel --- drivers/power/supply/power_supply_core.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/supply/power_supply_core.c index 874495c6face..f7033ecf6d0b 100644 --- a/drivers/power/supply/power_supply_core.c +++ b/drivers/power/supply/power_supply_core.c @@ -671,8 +671,10 @@ int power_supply_get_battery_info(struct power_supply *psy, } for (i = 0; i < tab_len; i++) { - table[i].ocv = be32_to_cpu(*list++); - table[i].capacity = be32_to_cpu(*list++); + table[i].ocv = be32_to_cpu(*list); + list++; + table[i].capacity = be32_to_cpu(*list); + list++; } } -- cgit v1.2.3 From e3e83cc601e57aeeea212e1cc37ff9a7ad584aae Mon Sep 17 00:00:00 2001 From: Andrey Smirnov Date: Fri, 3 May 2019 10:00:40 -0700 Subject: power: supply: core: Add POWER_SUPPLY_HEALTH_OVERCURRENT constant Add POWER_SUPPLY_HEALTH_OVERCURRENT constant in order to allow singalling overcurrent condition via power supply health information. Signed-off-by: Andrey Smirnov Reviewed-by: Guenter Roeck Cc: Enric Balletbo Serra Cc: Chris Healy Cc: Lucas Stach Cc: Fabio Estevam Cc: Guenter Roeck Cc: linux-kernel@vger.kernel.org Cc: linux-pm@vger.kernel.org Signed-off-by: Sebastian Reichel --- drivers/power/supply/power_supply_sysfs.c | 2 +- include/linux/power_supply.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supply/power_supply_sysfs.c index 6104a3f03d46..58c74bd417dd 100644 --- a/drivers/power/supply/power_supply_sysfs.c +++ b/drivers/power/supply/power_supply_sysfs.c @@ -62,7 +62,7 @@ static const char * const power_supply_charge_type_text[] = { static const char * const power_supply_health_text[] = { "Unknown", "Good", "Overheat", "Dead", "Over voltage", "Unspecified failure", "Cold", "Watchdog timer expire", - "Safety timer expire" + "Safety timer expire", "Over current" }; static const char * const power_supply_technology_text[] = { diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index d59205170232..d9c0c094f8a0 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -61,6 +61,7 @@ enum { POWER_SUPPLY_HEALTH_COLD, POWER_SUPPLY_HEALTH_WATCHDOG_TIMER_EXPIRE, POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE, + POWER_SUPPLY_HEALTH_OVERCURRENT, }; enum { -- cgit v1.2.3 From 9a2688e42638f2e057dbdfce82e221b38bfba0a7 Mon Sep 17 00:00:00 2001 From: Andrey Smirnov Date: Fri, 3 May 2019 10:00:41 -0700 Subject: power: supply: Add driver for Microchip UCS1002 Add driver for Microchip UCS1002 Programmable USB Port Power Controller with Charger Emulation. The driver exposed a power supply device to control/monitor various parameter of the device as well as a regulator to allow controlling VBUS line. Signed-off-by: Enric Balletbo Serra Signed-off-by: Andrey Smirnov Reviewed-by: Guenter Roeck Cc: Chris Healy Cc: Lucas Stach Cc: Fabio Estevam Cc: Guenter Roeck Cc: linux-kernel@vger.kernel.org Cc: linux-pm@vger.kernel.org Signed-off-by: Sebastian Reichel --- drivers/power/supply/Kconfig | 9 + drivers/power/supply/Makefile | 1 + drivers/power/supply/ucs1002_power.c | 646 +++++++++++++++++++++++++++++++++++ 3 files changed, 656 insertions(+) create mode 100644 drivers/power/supply/ucs1002_power.c (limited to 'drivers/power') diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig index 4728a218656f..fb813b14d55d 100644 --- a/drivers/power/supply/Kconfig +++ b/drivers/power/supply/Kconfig @@ -671,4 +671,13 @@ config FUEL_GAUGE_SC27XX Say Y here to enable support for fuel gauge with SC27XX PMIC chips. +config CHARGER_UCS1002 + tristate "Microchip UCS1002 USB Port Power Controller" + depends on I2C + depends on OF + select REGMAP_I2C + help + Say Y to enable support for Microchip UCS1002 Programmable + USB Port Power Controller with Charger Emulation. + endif # POWER_SUPPLY diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile index 39fc3e91e619..70a833863c61 100644 --- a/drivers/power/supply/Makefile +++ b/drivers/power/supply/Makefile @@ -88,3 +88,4 @@ obj-$(CONFIG_AXP288_CHARGER) += axp288_charger.o obj-$(CONFIG_CHARGER_CROS_USBPD) += cros_usbpd-charger.o obj-$(CONFIG_CHARGER_SC2731) += sc2731_charger.o obj-$(CONFIG_FUEL_GAUGE_SC27XX) += sc27xx_fuel_gauge.o +obj-$(CONFIG_CHARGER_UCS1002) += ucs1002_power.o diff --git a/drivers/power/supply/ucs1002_power.c b/drivers/power/supply/ucs1002_power.c new file mode 100644 index 000000000000..d66b4eff9b7a --- /dev/null +++ b/drivers/power/supply/ucs1002_power.c @@ -0,0 +1,646 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Driver for UCS1002 Programmable USB Port Power Controller + * + * Copyright (C) 2019 Zodiac Inflight Innovations + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* UCS1002 Registers */ +#define UCS1002_REG_CURRENT_MEASUREMENT 0x00 + +/* + * The Total Accumulated Charge registers store the total accumulated + * charge delivered from the VS source to a portable device. The total + * value is calculated using four registers, from 01h to 04h. The bit + * weighting of the registers is given in mA/hrs. + */ +#define UCS1002_REG_TOTAL_ACC_CHARGE 0x01 + +/* Other Status Register */ +#define UCS1002_REG_OTHER_STATUS 0x0f +# define F_ADET_PIN BIT(4) +# define F_CHG_ACT BIT(3) + +/* Interrupt Status */ +#define UCS1002_REG_INTERRUPT_STATUS 0x10 +# define F_DISCHARGE_ERR BIT(6) +# define F_RESET BIT(5) +# define F_MIN_KEEP_OUT BIT(4) +# define F_TSD BIT(3) +# define F_OVER_VOLT BIT(2) +# define F_BACK_VOLT BIT(1) +# define F_OVER_ILIM BIT(0) + +/* Pin Status Register */ +#define UCS1002_REG_PIN_STATUS 0x14 +# define UCS1002_PWR_STATE_MASK 0x03 +# define F_PWR_EN_PIN BIT(6) +# define F_M2_PIN BIT(5) +# define F_M1_PIN BIT(4) +# define F_EM_EN_PIN BIT(3) +# define F_SEL_PIN BIT(2) +# define F_ACTIVE_MODE_MASK GENMASK(5, 3) +# define F_ACTIVE_MODE_PASSTHROUGH F_M2_PIN +# define F_ACTIVE_MODE_DEDICATED F_EM_EN_PIN +# define F_ACTIVE_MODE_BC12_DCP (F_M2_PIN | F_EM_EN_PIN) +# define F_ACTIVE_MODE_BC12_SDP F_M1_PIN +# define F_ACTIVE_MODE_BC12_CDP (F_M1_PIN | F_M2_PIN | F_EM_EN_PIN) + +/* General Configuration Register */ +#define UCS1002_REG_GENERAL_CFG 0x15 +# define F_RATION_EN BIT(3) + +/* Emulation Configuration Register */ +#define UCS1002_REG_EMU_CFG 0x16 + +/* Switch Configuration Register */ +#define UCS1002_REG_SWITCH_CFG 0x17 +# define F_PIN_IGNORE BIT(7) +# define F_EM_EN_SET BIT(5) +# define F_M2_SET BIT(4) +# define F_M1_SET BIT(3) +# define F_S0_SET BIT(2) +# define F_PWR_EN_SET BIT(1) +# define F_LATCH_SET BIT(0) +# define V_SET_ACTIVE_MODE_MASK GENMASK(5, 3) +# define V_SET_ACTIVE_MODE_PASSTHROUGH F_M2_SET +# define V_SET_ACTIVE_MODE_DEDICATED F_EM_EN_SET +# define V_SET_ACTIVE_MODE_BC12_DCP (F_M2_SET | F_EM_EN_SET) +# define V_SET_ACTIVE_MODE_BC12_SDP F_M1_SET +# define V_SET_ACTIVE_MODE_BC12_CDP (F_M1_SET | F_M2_SET | F_EM_EN_SET) + +/* Current Limit Register */ +#define UCS1002_REG_ILIMIT 0x19 +# define UCS1002_ILIM_SW_MASK GENMASK(3, 0) + +/* Product ID */ +#define UCS1002_REG_PRODUCT_ID 0xfd +# define UCS1002_PRODUCT_ID 0x4e + +/* Manufacture name */ +#define UCS1002_MANUFACTURER "SMSC" + +struct ucs1002_info { + struct power_supply *charger; + struct i2c_client *client; + struct regmap *regmap; + struct regulator_desc *regulator_descriptor; + bool present; +}; + +static enum power_supply_property ucs1002_props[] = { + POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_CHARGE_NOW, + POWER_SUPPLY_PROP_CURRENT_NOW, + POWER_SUPPLY_PROP_CURRENT_MAX, + POWER_SUPPLY_PROP_PRESENT, /* the presence of PED */ + POWER_SUPPLY_PROP_MANUFACTURER, + POWER_SUPPLY_PROP_USB_TYPE, + POWER_SUPPLY_PROP_HEALTH, +}; + +static int ucs1002_get_online(struct ucs1002_info *info, + union power_supply_propval *val) +{ + unsigned int reg; + int ret; + + ret = regmap_read(info->regmap, UCS1002_REG_OTHER_STATUS, ®); + if (ret) + return ret; + + val->intval = !!(reg & F_CHG_ACT); + + return 0; +} + +static int ucs1002_get_charge(struct ucs1002_info *info, + union power_supply_propval *val) +{ + /* + * To fit within 32 bits some values are rounded (uA/h) + * + * For Total Accumulated Charge Middle Low Byte register, addr + * 03h, byte 2 + * + * B0: 0.01084 mA/h rounded to 11 uA/h + * B1: 0.02169 mA/h rounded to 22 uA/h + * B2: 0.04340 mA/h rounded to 43 uA/h + * B3: 0.08676 mA/h rounded to 87 uA/h + * B4: 0.17350 mA/h rounded to 173 uÁ/h + * + * For Total Accumulated Charge Low Byte register, addr 04h, + * byte 3 + * + * B6: 0.00271 mA/h rounded to 3 uA/h + * B7: 0.005422 mA/h rounded to 5 uA/h + */ + static const int bit_weights_uAh[BITS_PER_TYPE(u32)] = { + /* + * Bit corresponding to low byte (offset 0x04) + * B0 B1 B2 B3 B4 B5 B6 B7 + */ + 0, 0, 0, 0, 0, 0, 3, 5, + /* + * Bit corresponding to middle low byte (offset 0x03) + * B0 B1 B2 B3 B4 B5 B6 B7 + */ + 11, 22, 43, 87, 173, 347, 694, 1388, + /* + * Bit corresponding to middle high byte (offset 0x02) + * B0 B1 B2 B3 B4 B5 B6 B7 + */ + 2776, 5552, 11105, 22210, 44420, 88840, 177700, 355400, + /* + * Bit corresponding to high byte (offset 0x01) + * B0 B1 B2 B3 B4 B5 B6 B7 + */ + 710700, 1421000, 2843000, 5685000, 11371000, 22742000, + 45484000, 90968000, + }; + unsigned long total_acc_charger; + unsigned int reg; + int i, ret; + + ret = regmap_bulk_read(info->regmap, UCS1002_REG_TOTAL_ACC_CHARGE, + ®, sizeof(u32)); + if (ret) + return ret; + + total_acc_charger = be32_to_cpu(reg); /* BE as per offsets above */ + val->intval = 0; + + for_each_set_bit(i, &total_acc_charger, ARRAY_SIZE(bit_weights_uAh)) + val->intval += bit_weights_uAh[i]; + + return 0; +} + +static int ucs1002_get_current(struct ucs1002_info *info, + union power_supply_propval *val) +{ + /* + * The Current Measurement register stores the measured + * current value delivered to the portable device. The range + * is from 9.76 mA to 2.5 A. + */ + static const int bit_weights_uA[BITS_PER_TYPE(u8)] = { + 9760, 19500, 39000, 78100, 156200, 312300, 624600, 1249300, + }; + unsigned long current_measurement; + unsigned int reg; + int i, ret; + + ret = regmap_read(info->regmap, UCS1002_REG_CURRENT_MEASUREMENT, ®); + if (ret) + return ret; + + current_measurement = reg; + val->intval = 0; + + for_each_set_bit(i, ¤t_measurement, ARRAY_SIZE(bit_weights_uA)) + val->intval += bit_weights_uA[i]; + + return 0; +} + +/* + * The Current Limit register stores the maximum current used by the + * port switch. The range is from 500mA to 2.5 A. + */ +static const u32 ucs1002_current_limit_uA[] = { + 500000, 900000, 1000000, 1200000, 1500000, 1800000, 2000000, 2500000, +}; + +static int ucs1002_get_max_current(struct ucs1002_info *info, + union power_supply_propval *val) +{ + unsigned int reg; + int ret; + + ret = regmap_read(info->regmap, UCS1002_REG_ILIMIT, ®); + if (ret) + return ret; + + val->intval = ucs1002_current_limit_uA[reg & UCS1002_ILIM_SW_MASK]; + + return 0; +} + +static int ucs1002_set_max_current(struct ucs1002_info *info, u32 val) +{ + unsigned int reg; + int ret, idx; + + for (idx = 0; idx < ARRAY_SIZE(ucs1002_current_limit_uA); idx++) { + if (val == ucs1002_current_limit_uA[idx]) + break; + } + + if (idx == ARRAY_SIZE(ucs1002_current_limit_uA)) + return -EINVAL; + + ret = regmap_write(info->regmap, UCS1002_REG_ILIMIT, idx); + if (ret) + return ret; + /* + * Any current limit setting exceeding the one set via ILIM + * pin will be rejected, so we read out freshly changed limit + * to make sure that it took effect. + */ + ret = regmap_read(info->regmap, UCS1002_REG_ILIMIT, ®); + if (ret) + return ret; + + if (reg != idx) + return -EINVAL; + + return 0; +} + +static enum power_supply_usb_type ucs1002_usb_types[] = { + POWER_SUPPLY_USB_TYPE_PD, + POWER_SUPPLY_USB_TYPE_SDP, + POWER_SUPPLY_USB_TYPE_DCP, + POWER_SUPPLY_USB_TYPE_CDP, + POWER_SUPPLY_USB_TYPE_UNKNOWN, +}; + +static int ucs1002_set_usb_type(struct ucs1002_info *info, int val) +{ + unsigned int mode; + + if (val < 0 || val >= ARRAY_SIZE(ucs1002_usb_types)) + return -EINVAL; + + switch (ucs1002_usb_types[val]) { + case POWER_SUPPLY_USB_TYPE_PD: + mode = V_SET_ACTIVE_MODE_DEDICATED; + break; + case POWER_SUPPLY_USB_TYPE_SDP: + mode = V_SET_ACTIVE_MODE_BC12_SDP; + break; + case POWER_SUPPLY_USB_TYPE_DCP: + mode = V_SET_ACTIVE_MODE_BC12_DCP; + break; + case POWER_SUPPLY_USB_TYPE_CDP: + mode = V_SET_ACTIVE_MODE_BC12_CDP; + break; + default: + return -EINVAL; + } + + return regmap_update_bits(info->regmap, UCS1002_REG_SWITCH_CFG, + V_SET_ACTIVE_MODE_MASK, mode); +} + +static int ucs1002_get_usb_type(struct ucs1002_info *info, + union power_supply_propval *val) +{ + enum power_supply_usb_type type; + unsigned int reg; + int ret; + + ret = regmap_read(info->regmap, UCS1002_REG_PIN_STATUS, ®); + if (ret) + return ret; + + switch (reg & F_ACTIVE_MODE_MASK) { + default: + type = POWER_SUPPLY_USB_TYPE_UNKNOWN; + break; + case F_ACTIVE_MODE_DEDICATED: + type = POWER_SUPPLY_USB_TYPE_PD; + break; + case F_ACTIVE_MODE_BC12_SDP: + type = POWER_SUPPLY_USB_TYPE_SDP; + break; + case F_ACTIVE_MODE_BC12_DCP: + type = POWER_SUPPLY_USB_TYPE_DCP; + break; + case F_ACTIVE_MODE_BC12_CDP: + type = POWER_SUPPLY_USB_TYPE_CDP; + break; + }; + + val->intval = type; + + return 0; +} + +static int ucs1002_get_health(struct ucs1002_info *info, + union power_supply_propval *val) +{ + unsigned int reg; + int ret, health; + + ret = regmap_read(info->regmap, UCS1002_REG_INTERRUPT_STATUS, ®); + if (ret) + return ret; + + if (reg & F_TSD) + health = POWER_SUPPLY_HEALTH_OVERHEAT; + else if (reg & (F_OVER_VOLT | F_BACK_VOLT)) + health = POWER_SUPPLY_HEALTH_OVERVOLTAGE; + else if (reg & F_OVER_ILIM) + health = POWER_SUPPLY_HEALTH_OVERCURRENT; + else if (reg & (F_DISCHARGE_ERR | F_MIN_KEEP_OUT)) + health = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; + else + health = POWER_SUPPLY_HEALTH_GOOD; + + val->intval = health; + + return 0; +} + +static int ucs1002_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct ucs1002_info *info = power_supply_get_drvdata(psy); + + switch (psp) { + case POWER_SUPPLY_PROP_ONLINE: + return ucs1002_get_online(info, val); + case POWER_SUPPLY_PROP_CHARGE_NOW: + return ucs1002_get_charge(info, val); + case POWER_SUPPLY_PROP_CURRENT_NOW: + return ucs1002_get_current(info, val); + case POWER_SUPPLY_PROP_CURRENT_MAX: + return ucs1002_get_max_current(info, val); + case POWER_SUPPLY_PROP_USB_TYPE: + return ucs1002_get_usb_type(info, val); + case POWER_SUPPLY_PROP_HEALTH: + return ucs1002_get_health(info, val); + case POWER_SUPPLY_PROP_PRESENT: + val->intval = info->present; + return 0; + case POWER_SUPPLY_PROP_MANUFACTURER: + val->strval = UCS1002_MANUFACTURER; + return 0; + default: + return -EINVAL; + } +} + +static int ucs1002_set_property(struct power_supply *psy, + enum power_supply_property psp, + const union power_supply_propval *val) +{ + struct ucs1002_info *info = power_supply_get_drvdata(psy); + + switch (psp) { + case POWER_SUPPLY_PROP_CURRENT_MAX: + return ucs1002_set_max_current(info, val->intval); + case POWER_SUPPLY_PROP_USB_TYPE: + return ucs1002_set_usb_type(info, val->intval); + default: + return -EINVAL; + } +} + +static int ucs1002_property_is_writeable(struct power_supply *psy, + enum power_supply_property psp) +{ + switch (psp) { + case POWER_SUPPLY_PROP_CURRENT_MAX: + case POWER_SUPPLY_PROP_USB_TYPE: + return true; + default: + return false; + } +} + +static const struct power_supply_desc ucs1002_charger_desc = { + .name = "ucs1002", + .type = POWER_SUPPLY_TYPE_USB, + .usb_types = ucs1002_usb_types, + .num_usb_types = ARRAY_SIZE(ucs1002_usb_types), + .get_property = ucs1002_get_property, + .set_property = ucs1002_set_property, + .property_is_writeable = ucs1002_property_is_writeable, + .properties = ucs1002_props, + .num_properties = ARRAY_SIZE(ucs1002_props), +}; + +static irqreturn_t ucs1002_charger_irq(int irq, void *data) +{ + int ret, regval; + bool present; + struct ucs1002_info *info = data; + + present = info->present; + + ret = regmap_read(info->regmap, UCS1002_REG_OTHER_STATUS, ®val); + if (ret) + return IRQ_HANDLED; + + /* update attached status */ + info->present = regval & F_ADET_PIN; + + /* notify the change */ + if (present != info->present) + power_supply_changed(info->charger); + + return IRQ_HANDLED; +} + +static irqreturn_t ucs1002_alert_irq(int irq, void *data) +{ + struct ucs1002_info *info = data; + + power_supply_changed(info->charger); + + return IRQ_HANDLED; +} + +static const struct regulator_ops ucs1002_regulator_ops = { + .is_enabled = regulator_is_enabled_regmap, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, +}; + +static const struct regulator_desc ucs1002_regulator_descriptor = { + .name = "ucs1002-vbus", + .ops = &ucs1002_regulator_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + .enable_reg = UCS1002_REG_SWITCH_CFG, + .enable_mask = F_PWR_EN_SET, + .enable_val = F_PWR_EN_SET, + .fixed_uV = 5000000, + .n_voltages = 1, +}; + +static int ucs1002_probe(struct i2c_client *client, + const struct i2c_device_id *dev_id) +{ + struct device *dev = &client->dev; + struct power_supply_config charger_config = {}; + const struct regmap_config regmap_config = { + .reg_bits = 8, + .val_bits = 8, + }; + struct regulator_config regulator_config = {}; + int irq_a_det, irq_alert, ret; + struct regulator_dev *rdev; + struct ucs1002_info *info; + unsigned int regval; + + info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL); + if (!info) + return -ENOMEM; + + info->regmap = devm_regmap_init_i2c(client, ®map_config); + ret = PTR_ERR_OR_ZERO(info->charger); + if (ret) { + dev_err(dev, "Regmap initialization failed: %d\n", ret); + return ret; + } + + info->client = client; + + irq_a_det = of_irq_get_byname(dev->of_node, "a_det"); + irq_alert = of_irq_get_byname(dev->of_node, "alert"); + + charger_config.of_node = dev->of_node; + charger_config.drv_data = info; + + ret = regmap_read(info->regmap, UCS1002_REG_PRODUCT_ID, ®val); + if (ret) { + dev_err(dev, "Failed to read product ID: %d\n", ret); + return ret; + } + + if (regval != UCS1002_PRODUCT_ID) { + dev_err(dev, + "Product ID does not match (0x%02x != 0x%02x)\n", + regval, UCS1002_PRODUCT_ID); + return -ENODEV; + } + + /* Enable charge rationing by default */ + ret = regmap_update_bits(info->regmap, UCS1002_REG_GENERAL_CFG, + F_RATION_EN, F_RATION_EN); + if (ret) { + dev_err(dev, "Failed to read general config: %d\n", ret); + return ret; + } + + /* + * Ignore the M1, M2, PWR_EN, and EM_EN pin states. Set active + * mode selection to BC1.2 CDP. + */ + ret = regmap_update_bits(info->regmap, UCS1002_REG_SWITCH_CFG, + V_SET_ACTIVE_MODE_MASK | F_PIN_IGNORE, + V_SET_ACTIVE_MODE_BC12_CDP | F_PIN_IGNORE); + if (ret) { + dev_err(dev, "Failed to configure default mode: %d\n", ret); + return ret; + } + /* + * Be safe and set initial current limit to 500mA + */ + ret = ucs1002_set_max_current(info, 500000); + if (ret) { + dev_err(dev, "Failed to set max current default: %d\n", ret); + return ret; + } + + info->charger = devm_power_supply_register(dev, &ucs1002_charger_desc, + &charger_config); + ret = PTR_ERR_OR_ZERO(info->charger); + if (ret) { + dev_err(dev, "Failed to register power supply: %d\n", ret); + return ret; + } + + ret = regmap_read(info->regmap, UCS1002_REG_PIN_STATUS, ®val); + if (ret) { + dev_err(dev, "Failed to read pin status: %d\n", ret); + return ret; + } + + info->regulator_descriptor = + devm_kmemdup(dev, &ucs1002_regulator_descriptor, + sizeof(ucs1002_regulator_descriptor), + GFP_KERNEL); + if (!info->regulator_descriptor) + return -ENOMEM; + + info->regulator_descriptor->enable_is_inverted = !(regval & F_SEL_PIN); + + regulator_config.dev = dev; + regulator_config.of_node = dev->of_node; + regulator_config.regmap = info->regmap; + + rdev = devm_regulator_register(dev, info->regulator_descriptor, + ®ulator_config); + ret = PTR_ERR_OR_ZERO(info->charger); + if (ret) { + dev_err(dev, "Failed to register VBUS regulator: %d\n", ret); + return ret; + } + + if (irq_a_det > 0) { + ret = devm_request_threaded_irq(dev, irq_a_det, NULL, + ucs1002_charger_irq, + IRQF_ONESHOT, + "ucs1002-a_det", info); + if (ret) { + dev_err(dev, "Failed to request A_DET threaded irq: %d\n", + ret); + return ret; + } + } + + if (irq_alert > 0) { + ret = devm_request_threaded_irq(dev, irq_alert, NULL, + ucs1002_alert_irq, + IRQF_ONESHOT, + "ucs1002-alert", info); + if (ret) { + dev_err(dev, "Failed to request ALERT threaded irq: %d\n", + ret); + return ret; + } + } + + return 0; +} + +static const struct of_device_id ucs1002_of_match[] = { + { .compatible = "microchip,ucs1002", }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, ucs1002_of_match); + +static struct i2c_driver ucs1002_driver = { + .driver = { + .name = "ucs1002", + .of_match_table = ucs1002_of_match, + }, + .probe = ucs1002_probe, +}; +module_i2c_driver(ucs1002_driver); + +MODULE_DESCRIPTION("Microchip UCS1002 Programmable USB Port Power Controller"); +MODULE_AUTHOR("Enric Balletbo Serra "); +MODULE_AUTHOR("Andrey Smirnov "); +MODULE_LICENSE("GPL"); -- cgit v1.2.3 From 09eb8b7c5adcc5d1d1908d78237dd7ae1d8605b6 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Thu, 9 May 2019 20:56:14 +0800 Subject: power: supply: ucs1002: Fix wrong return value checking Fix wrong return value checking for devm_regulator_register and devm_regmap_init_i2c. This looks like a copy-n-paste mistake. Fixes: 9a2688e42638 ("power: supply: Add driver for Microchip UCS1002") Signed-off-by: Axel Lin Reviewed-by: Enric Balletbo i Serra Reviewed-by: Andrey Smirnov Signed-off-by: Sebastian Reichel --- drivers/power/supply/ucs1002_power.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/ucs1002_power.c b/drivers/power/supply/ucs1002_power.c index d66b4eff9b7a..1c89d030c045 100644 --- a/drivers/power/supply/ucs1002_power.c +++ b/drivers/power/supply/ucs1002_power.c @@ -508,7 +508,7 @@ static int ucs1002_probe(struct i2c_client *client, return -ENOMEM; info->regmap = devm_regmap_init_i2c(client, ®map_config); - ret = PTR_ERR_OR_ZERO(info->charger); + ret = PTR_ERR_OR_ZERO(info->regmap); if (ret) { dev_err(dev, "Regmap initialization failed: %d\n", ret); return ret; @@ -592,7 +592,7 @@ static int ucs1002_probe(struct i2c_client *client, rdev = devm_regulator_register(dev, info->regulator_descriptor, ®ulator_config); - ret = PTR_ERR_OR_ZERO(info->charger); + ret = PTR_ERR_OR_ZERO(rdev); if (ret) { dev_err(dev, "Failed to register VBUS regulator: %d\n", ret); return ret; -- cgit v1.2.3 From c8f3c9fe83cafc94679007b9c0083ee25d5735e0 Mon Sep 17 00:00:00 2001 From: YueHaibing Date: Fri, 10 May 2019 15:18:23 +0800 Subject: power: supply: ucs1002: Fix build error without CONFIG_REGULATOR Fix gcc build error while CONFIG_REGULATOR is not set drivers/power/supply/ucs1002_power.o: In function `ucs1002_probe': drivers/power/supply/ucs1002_power.c:593: undefined reference to `devm_regulator_register' drivers/power/supply/ucs1002_power.o:(.rodata+0x3b8): undefined reference to `regulator_enable_regmap' drivers/power/supply/ucs1002_power.o:(.rodata+0x3c0): undefined reference to `regulator_disable_regmap' drivers/power/supply/ucs1002_power.o:(.rodata+0x3c8): undefined reference to `regulator_is_enabled_regmap' Add Kconfig dependency to CONFIG_REGULATOR. Reported-by: Hulk Robot Fixes: 9a2688e42638 ("power: supply: Add driver for Microchip UCS1002") Signed-off-by: YueHaibing Reviewed-by: Guenter Roeck Signed-off-by: Sebastian Reichel --- drivers/power/supply/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/power') diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig index fb813b14d55d..678de2b04c66 100644 --- a/drivers/power/supply/Kconfig +++ b/drivers/power/supply/Kconfig @@ -675,6 +675,7 @@ config CHARGER_UCS1002 tristate "Microchip UCS1002 USB Port Power Controller" depends on I2C depends on OF + depends on REGULATOR select REGMAP_I2C help Say Y to enable support for Microchip UCS1002 Programmable -- cgit v1.2.3 From baf5964ecfe19a0109fe2e497e72840ce0f488e6 Mon Sep 17 00:00:00 2001 From: Lubomir Rintel Date: Sat, 11 May 2019 10:56:14 +0200 Subject: power: supply: olpc_battery: force the le/be casts The endianness of data returned from the EC depends on the particular EC version determined at run time. Cast from little/big endian explicitey in the routine that flips endianness to the native one to make sparse happy. Signed-off-by: Lubomir Rintel Reported-by: kbuild test robot Fixes: 76311b9a3295 ("power: supply: olpc_battery: Add OLPC XO 1.75 support") Signed-off-by: Sebastian Reichel --- drivers/power/supply/olpc_battery.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/olpc_battery.c b/drivers/power/supply/olpc_battery.c index c628d3a47e14..7720e4c2ac0b 100644 --- a/drivers/power/supply/olpc_battery.c +++ b/drivers/power/supply/olpc_battery.c @@ -327,9 +327,9 @@ static int olpc_bat_get_voltage_max_design(union power_supply_propval *val) static u16 ecword_to_cpu(struct olpc_battery_data *data, u16 ec_word) { if (data->little_endian) - return le16_to_cpu(ec_word); + return le16_to_cpu((__force __le16)ec_word); else - return be16_to_cpu(ec_word); + return be16_to_cpu((__force __be16)ec_word); } /********************************************************************* @@ -341,7 +341,7 @@ static int olpc_bat_get_property(struct power_supply *psy, { struct olpc_battery_data *data = power_supply_get_drvdata(psy); int ret = 0; - __be16 ec_word; + u16 ec_word; uint8_t ec_byte; __be64 ser_buf; -- cgit v1.2.3