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a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A From: Bjorn Andersson Add binding for the Embedded Controller found in the Qualcomm Snapdragon-based Lenovo Yoga C630. Signed-off-by: Bjorn Andersson Reviewed-by: Krzysztof Kozlowski Signed-off-by: Dmitry Baryshkov --- .../bindings/platform/lenovo,yoga-c630-ec.yaml | 83 ++++++++++++++++++= ++++ 1 file changed, 83 insertions(+) diff --git a/Documentation/devicetree/bindings/platform/lenovo,yoga-c630-ec= .yaml b/Documentation/devicetree/bindings/platform/lenovo,yoga-c630-ec.yaml new file mode 100644 index 000000000000..3180ce1a22d4 --- /dev/null +++ b/Documentation/devicetree/bindings/platform/lenovo,yoga-c630-ec.yaml @@ -0,0 +1,83 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/platform/lenovo,yoga-c630-ec.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Lenovo Yoga C630 Embedded Controller. + +maintainers: + - Bjorn Andersson + +description: + The Qualcomm Snapdragon-based Lenovo Yoga C630 has an Embedded Controller + (EC) which handles things such as battery and USB Type-C. This binding + describes the interface, on an I2C bus, to this EC. + +properties: + compatible: + const: lenovo,yoga-c630-ec + + reg: + const: 0x70 + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + + interrupts: + maxItems: 1 + +patternProperties: + '^connector@[01]$': + $ref: /schemas/connector/usb-connector.yaml# + + properties: + reg: + maxItems: 1 + + unevaluatedProperties: false + +required: + - compatible + - reg + - interrupts + +additionalProperties: false + +examples: + - |+ + #include + i2c1 { + clock-frequency =3D <400000>; + + #address-cells =3D <1>; + #size-cells =3D <0>; + + embedded-controller@70 { + compatible =3D "lenovo,yoga-c630-ec"; + reg =3D <0x70>; + + interrupts-extended =3D <&tlmm 20 IRQ_TYPE_LEVEL_HIGH>; + + #address-cells =3D <1>; + #size-cells =3D <0>; + + connector@0 { + compatible =3D "usb-c-connector"; + reg =3D <0>; + power-role =3D "source"; + data-role =3D "host"; + }; + + connector@1 { + compatible =3D "usb-c-connector"; + reg =3D <1>; + power-role =3D "source"; 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a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A Lenovo Yoga C630 WOS is a laptop using Snapdragon 850 SoC. Like many laptops it uses embedded controller (EC) to perform various platform operations, including, but not limited, to Type-C port control or power supply handlng. Add the driver for the EC, that creates devices for UCSI and power supply devices. Signed-off-by: Dmitry Baryshkov Reviewed-by: Bryan O'Donoghue --- drivers/platform/arm64/Kconfig | 14 ++ drivers/platform/arm64/Makefile | 1 + drivers/platform/arm64/lenovo-yoga-c630.c | 279 +++++++++++++++++++++= ++++ include/linux/platform_data/lenovo-yoga-c630.h | 42 ++++ 4 files changed, 336 insertions(+) diff --git a/drivers/platform/arm64/Kconfig b/drivers/platform/arm64/Kconfig index 8fdca0f8e909..8c103b3150d1 100644 --- a/drivers/platform/arm64/Kconfig +++ b/drivers/platform/arm64/Kconfig @@ -32,4 +32,18 @@ config EC_ACER_ASPIRE1 laptop where this information is not properly exposed via the standard ACPI devices. =20 +config EC_LENOVO_YOGA_C630 + tristate "Lenovo Yoga C630 Embedded Controller driver" + depends on I2C + help + Driver for the Embedded Controller in the Qualcomm Snapdragon-based + Lenovo Yoga C630, which provides battery and power adapter + information. + + This driver provides battery and AC status support for the mentioned + laptop where this information is not properly exposed via the + standard ACPI devices. + + Say M or Y here to include this support. + endif # ARM64_PLATFORM_DEVICES diff --git a/drivers/platform/arm64/Makefile b/drivers/platform/arm64/Makef= ile index 4fcc9855579b..b2ae9114fdd8 100644 --- a/drivers/platform/arm64/Makefile +++ b/drivers/platform/arm64/Makefile @@ -6,3 +6,4 @@ # =20 obj-$(CONFIG_EC_ACER_ASPIRE1) +=3D acer-aspire1-ec.o +obj-$(CONFIG_EC_LENOVO_YOGA_C630) +=3D lenovo-yoga-c630.o diff --git a/drivers/platform/arm64/lenovo-yoga-c630.c b/drivers/platform/a= rm64/lenovo-yoga-c630.c new file mode 100644 index 000000000000..3d1d5acde807 --- /dev/null +++ b/drivers/platform/arm64/lenovo-yoga-c630.c @@ -0,0 +1,279 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2022-2024, Linaro Ltd + * Authors: + * Bjorn Andersson + * Dmitry Baryshkov + */ +#include +#include +#include +#include +#include + +#define LENOVO_EC_RESPONSE_REG 0x01 +#define LENOVO_EC_REQUEST_REG 0x02 + +#define LENOVO_EC_UCSI_WRITE 0x20 +#define LENOVO_EC_UCSI_READ 0x21 + +#define LENOVO_EC_READ_REG 0xb0 +#define LENOVO_EC_REQUEST_NEXT_EVENT 0x84 + +struct yoga_c630_ec { + struct i2c_client *client; + struct mutex lock; + struct blocking_notifier_head notifier_list; +}; + +static int yoga_c630_ec_request(struct yoga_c630_ec *ec, u8 *req, size_t r= eq_len, + u8 *resp, size_t resp_len) +{ + int ret; + + WARN_ON(!mutex_is_locked(&ec->lock)); + + ret =3D i2c_smbus_write_i2c_block_data(ec->client, LENOVO_EC_REQUEST_REG, + req_len, req); + if (ret < 0) + return ret; + + return i2c_smbus_read_i2c_block_data(ec->client, LENOVO_EC_RESPONSE_REG, + resp_len, resp); +} + +int yoga_c630_ec_read8(struct yoga_c630_ec *ec, u8 addr) +{ + u8 req[2] =3D { LENOVO_EC_READ_REG, }; + int ret; + u8 val; + + mutex_lock(&ec->lock); + req[1] =3D addr; + ret =3D yoga_c630_ec_request(ec, req, sizeof(req), &val, 1); + mutex_unlock(&ec->lock); + + return ret < 0 ? ret : val; +} +EXPORT_SYMBOL_GPL(yoga_c630_ec_read8); + +int yoga_c630_ec_read16(struct yoga_c630_ec *ec, u8 addr) +{ + u8 req[2] =3D { LENOVO_EC_READ_REG, }; + int ret; + u8 msb; + u8 lsb; + + mutex_lock(&ec->lock); + + req[1] =3D addr; + ret =3D yoga_c630_ec_request(ec, req, sizeof(req), &lsb, 1); + if (ret < 0) + goto out; + + req[1] =3D addr + 1; + ret =3D yoga_c630_ec_request(ec, req, sizeof(req), &msb, 1); + +out: + mutex_unlock(&ec->lock); + + return ret < 0 ? ret : msb << 8 | lsb; +} +EXPORT_SYMBOL_GPL(yoga_c630_ec_read16); + +u16 yoga_c630_ec_ucsi_get_version(struct yoga_c630_ec *ec) +{ + u8 req[3] =3D { 0xb3, 0xf2, 0x20}; + int ret; + u8 msb; + u8 lsb; + + mutex_lock(&ec->lock); + ret =3D yoga_c630_ec_request(ec, req, sizeof(req), &lsb, 1); + if (ret < 0) + goto out; + + req[2]++; + ret =3D yoga_c630_ec_request(ec, req, sizeof(req), &msb, 1); + +out: + mutex_unlock(&ec->lock); + + return ret < 0 ? ret : msb << 8 | lsb; +} +EXPORT_SYMBOL_GPL(yoga_c630_ec_ucsi_get_version); + +int yoga_c630_ec_ucsi_write(struct yoga_c630_ec *ec, + const u8 req[YOGA_C630_UCSI_WRITE_SIZE]) +{ + int ret; + + mutex_lock(&ec->lock); + ret =3D i2c_smbus_write_i2c_block_data(ec->client, LENOVO_EC_UCSI_WRITE, + YOGA_C630_UCSI_WRITE_SIZE, req); + mutex_unlock(&ec->lock); + + return ret < 0 ? ret : 0; +} +EXPORT_SYMBOL_GPL(yoga_c630_ec_ucsi_write); + +int yoga_c630_ec_ucsi_read(struct yoga_c630_ec *ec, + u8 resp[YOGA_C630_UCSI_READ_SIZE]) +{ + int ret; + + mutex_lock(&ec->lock); + ret =3D i2c_smbus_read_i2c_block_data(ec->client, LENOVO_EC_UCSI_READ, + YOGA_C630_UCSI_READ_SIZE, resp); + mutex_unlock(&ec->lock); + + return ret < 0 ? ret : 0; +} +EXPORT_SYMBOL_GPL(yoga_c630_ec_ucsi_read); + +static irqreturn_t yoga_c630_ec_intr(int irq, void *data) +{ + u8 req[] =3D { LENOVO_EC_REQUEST_NEXT_EVENT }; + struct yoga_c630_ec *ec =3D data; + u8 event; + int ret; + + mutex_lock(&ec->lock); + ret =3D yoga_c630_ec_request(ec, req, sizeof(req), &event, 1); + mutex_unlock(&ec->lock); + if (ret < 0) + return IRQ_HANDLED; + + pr_info("NOTIFY %x\n", event); + + blocking_notifier_call_chain(&ec->notifier_list, event, ec); + + return IRQ_HANDLED; +} + +/** + * yoga_c630_ec_register_notify - Register a notifier callback for EC even= ts. + * @ec: Yoga C630 EC + * @nb: Notifier block pointer to register + * + * Return: 0 on success or negative error code. + */ +int yoga_c630_ec_register_notify(struct yoga_c630_ec *ec, struct notifier_= block *nb) +{ + return blocking_notifier_chain_register(&ec->notifier_list, + nb); +} +EXPORT_SYMBOL_GPL(yoga_c630_ec_register_notify); + +/** + * yoga_c630_ec_unregister_notify - Unregister notifier callback for EC ev= ents. + * @ec: Yoga C630 EC + * @nb: Notifier block pointer to unregister + * + * Unregister a notifier callback that was previously registered with + * yoga_c630_ec_register_notify(). + */ +void yoga_c630_ec_unregister_notify(struct yoga_c630_ec *ec, struct notifi= er_block *nb) +{ + blocking_notifier_chain_unregister(&ec->notifier_list, nb); +} +EXPORT_SYMBOL_GPL(yoga_c630_ec_unregister_notify); + +static void yoga_c630_aux_release(struct device *dev) +{ + struct auxiliary_device *adev =3D to_auxiliary_dev(dev); + + kfree(adev); +} + +static void yoga_c630_aux_remove(void *data) +{ + struct auxiliary_device *adev =3D data; + + auxiliary_device_delete(adev); + auxiliary_device_uninit(adev); +} + +static int yoga_c630_aux_init(struct device *parent, const char *name, + struct yoga_c630_ec *ec) +{ + struct auxiliary_device *adev; + int ret; + + adev =3D kzalloc(sizeof(*adev), GFP_KERNEL); + if (!adev) + return -ENOMEM; + + adev->name =3D name; + adev->id =3D 0; + adev->dev.parent =3D parent; + adev->dev.release =3D yoga_c630_aux_release; + adev->dev.platform_data =3D ec; + + ret =3D auxiliary_device_init(adev); + if (ret) { + kfree(adev); + return ret; + } + + ret =3D auxiliary_device_add(adev); + if (ret) { + auxiliary_device_uninit(adev); + return ret; + } + + return devm_add_action_or_reset(parent, yoga_c630_aux_remove, adev); +} + +static int yoga_c630_ec_probe(struct i2c_client *client) +{ + struct yoga_c630_ec *ec; + struct device *dev =3D &client->dev; + int ret; + + ec =3D devm_kzalloc(dev, sizeof(*ec), GFP_KERNEL); + if (!ec) + return -ENOMEM; + + mutex_init(&ec->lock); + ec->client =3D client; + BLOCKING_INIT_NOTIFIER_HEAD(&ec->notifier_list); + + ret =3D devm_request_threaded_irq(dev, client->irq, + NULL, yoga_c630_ec_intr, + IRQF_ONESHOT, "yoga_c630_ec", ec); + if (ret < 0) + return dev_err_probe(dev, ret, "unable to request irq\n"); + + ret =3D yoga_c630_aux_init(dev, YOGA_C630_DEV_PSY, ec); + if (ret) + return ret; + + return yoga_c630_aux_init(dev, YOGA_C630_DEV_UCSI, ec); +} + + +static const struct of_device_id yoga_c630_ec_of_match[] =3D { + { .compatible =3D "lenovo,yoga-c630-ec" }, + {} +}; +MODULE_DEVICE_TABLE(of, yoga_c630_ec_of_match); + +static const struct i2c_device_id yoga_c630_ec_i2c_id_table[] =3D { + { "yoga-c630-ec", }, + {} +}; +MODULE_DEVICE_TABLE(i2c, yoga_c630_ec_i2c_id_table); + +static struct i2c_driver yoga_c630_ec_i2c_driver =3D { + .driver =3D { + .name =3D "yoga-c630-ec", + .of_match_table =3D yoga_c630_ec_of_match + }, + .probe =3D yoga_c630_ec_probe, + .id_table =3D yoga_c630_ec_i2c_id_table, +}; +module_i2c_driver(yoga_c630_ec_i2c_driver); + +MODULE_DESCRIPTION("Lenovo Yoga C630 Embedded Controller"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/platform_data/lenovo-yoga-c630.h b/include/linux= /platform_data/lenovo-yoga-c630.h new file mode 100644 index 000000000000..2b893dbeb124 --- /dev/null +++ b/include/linux/platform_data/lenovo-yoga-c630.h @@ -0,0 +1,42 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2022-2024, Linaro Ltd + * Authors: + * Bjorn Andersson + * Dmitry Baryshkov + */ + +#ifndef _LENOVO_YOGA_C630_DATA_H +#define _LENOVO_YOGA_C630_DATA_H + +struct yoga_c630_ec; + +#define YOGA_C630_MOD_NAME "lenovo_yoga_c630" + +#define YOGA_C630_DEV_UCSI "ucsi" +#define YOGA_C630_DEV_PSY "psy" + +int yoga_c630_ec_read8(struct yoga_c630_ec *ec, u8 addr); +int yoga_c630_ec_read16(struct yoga_c630_ec *ec, u8 addr); + +int yoga_c630_ec_register_notify(struct yoga_c630_ec *ec, struct notifier_= block *nb); +void yoga_c630_ec_unregister_notify(struct yoga_c630_ec *ec, struct notifi= er_block *nb); + +#define YOGA_C630_UCSI_WRITE_SIZE 8 +#define YOGA_C630_UCSI_CCI_SIZE 4 +#define YOGA_C630_UCSI_DATA_SIZE 16 +#define YOGA_C630_UCSI_READ_SIZE (YOGA_C630_UCSI_CCI_SIZE + YOGA_C630_UCSI= _DATA_SIZE) +u16 yoga_c630_ec_ucsi_get_version(struct yoga_c630_ec *ec); +int yoga_c630_ec_ucsi_write(struct yoga_c630_ec *ec, + const u8 req[YOGA_C630_UCSI_WRITE_SIZE]); +int yoga_c630_ec_ucsi_read(struct yoga_c630_ec *ec, + u8 resp[YOGA_C630_UCSI_READ_SIZE]); + +#define LENOVO_EC_EVENT_USB 0x20 +#define LENOVO_EC_EVENT_UCSI 0x21 +#define LENOVO_EC_EVENT_HPD 0x22 +#define LENOVO_EC_EVENT_BAT_STATUS 0x24 +#define LENOVO_EC_EVENT_BAT_INFO 0x25 +#define LENOVO_EC_EVENT_BAT_ADPT_STATUS 0x37 + +#endif --=20 2.39.2 From nobody Fri Dec 19 21:11:51 2025 Received: from mail-lj1-f178.google.com (mail-lj1-f178.google.com [209.85.208.178]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 829A017B413 for ; 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Tue, 28 May 2024 13:44:56 -0700 (PDT) Received: from umbar.lan ([192.130.178.91]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-2e95bdcd21esm22759431fa.100.2024.05.28.13.44.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 May 2024 13:44:56 -0700 (PDT) From: Dmitry Baryshkov Date: Tue, 28 May 2024 23:44:48 +0300 Subject: [PATCH v4 3/6] usb: typec: ucsi: add Lenovo Yoga C630 glue driver Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240528-yoga-ec-driver-v4-3-4fa8dfaae7b6@linaro.org> References: <20240528-yoga-ec-driver-v4-0-4fa8dfaae7b6@linaro.org> In-Reply-To: <20240528-yoga-ec-driver-v4-0-4fa8dfaae7b6@linaro.org> To: Sebastian Reichel , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Hans de Goede , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Bryan O'Donoghue , Heikki Krogerus , Greg Kroah-Hartman , Konrad Dybcio Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-usb@vger.kernel.org, linux-arm-msm@vger.kernel.org, Nikita Travkin X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=6860; i=dmitry.baryshkov@linaro.org; h=from:subject:message-id; bh=9TzMr4Rk7UoqG9pBwIioYwk7quFk4Q3NDC6Ibx0+hjU=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBmVkJFJLRQYs9y2nhR92Fpq0JsWpuvQaLkpP+bj MfTOSE7HyyJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCZlZCRQAKCRCLPIo+Aiko 1UE3B/9uOeYZUGbqZypEF3JEGkyC8eign0tcQ2NsOqQ5timKYqVHdhHvAdgAejnPDz4BNYP/4QQ kBkEG0VTEnUE6RevHseOelyJ18e4pP3ze1QRPpPYBs/OQpMhvj2fxh54APA97dyG9Z+71+45ebJ 5+vlohuYkyBvcFn+ugca/pUm2L5rtI/0AaS1hPKf4KwlHN/ad4ezy71R5VK6jRyPxa/c79cZ81E /VHbPvrJSiz5QQXCEQc5szeZr4SY487GyQdCNylGpCLToBp3ry63Q4VOh9RsuU8r9a7V/FQdEtQ Kao3oacL5Gfp5uBRIJZybfg76d1x5iRWmjqgJ95Tp9o9VWBM X-Developer-Key: i=dmitry.baryshkov@linaro.org; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A The Lenovo Yoga C630 WOS laptop provides implements UCSI interface in the onboard EC. Add glue driver to interface the platform's UCSI implementation. Signed-off-by: Dmitry Baryshkov Reviewed-by: Bryan O'Donoghue --- drivers/usb/typec/ucsi/Kconfig | 9 ++ drivers/usb/typec/ucsi/Makefile | 1 + drivers/usb/typec/ucsi/ucsi_yoga_c630.c | 189 ++++++++++++++++++++++++++++= ++++ 3 files changed, 199 insertions(+) diff --git a/drivers/usb/typec/ucsi/Kconfig b/drivers/usb/typec/ucsi/Kconfig index bdcb1764cfae..680e1b87b152 100644 --- a/drivers/usb/typec/ucsi/Kconfig +++ b/drivers/usb/typec/ucsi/Kconfig @@ -69,4 +69,13 @@ config UCSI_PMIC_GLINK To compile the driver as a module, choose M here: the module will be called ucsi_glink. =20 +config UCSI_LENOVO_YOGA_C630 + tristate "UCSI Interface Driver for Lenovo Yoga C630" + depends on EC_LENOVO_YOGA_C630 + help + This driver enables UCSI support on the Lenovo Yoga C630 laptop. + + To compile the driver as a module, choose M here: the module will be + called ucsi_yoga_c630. + endif diff --git a/drivers/usb/typec/ucsi/Makefile b/drivers/usb/typec/ucsi/Makef= ile index b4679f94696b..aed41d23887b 100644 --- a/drivers/usb/typec/ucsi/Makefile +++ b/drivers/usb/typec/ucsi/Makefile @@ -21,3 +21,4 @@ obj-$(CONFIG_UCSI_ACPI) +=3D ucsi_acpi.o obj-$(CONFIG_UCSI_CCG) +=3D ucsi_ccg.o obj-$(CONFIG_UCSI_STM32G0) +=3D ucsi_stm32g0.o obj-$(CONFIG_UCSI_PMIC_GLINK) +=3D ucsi_glink.o +obj-$(CONFIG_UCSI_LENOVO_YOGA_C630) +=3D ucsi_yoga_c630.o diff --git a/drivers/usb/typec/ucsi/ucsi_yoga_c630.c b/drivers/usb/typec/uc= si/ucsi_yoga_c630.c new file mode 100644 index 000000000000..ca1ab5c81b87 --- /dev/null +++ b/drivers/usb/typec/ucsi/ucsi_yoga_c630.c @@ -0,0 +1,189 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2022-2024, Linaro Ltd + * Authors: + * Bjorn Andersson + * Dmitry Baryshkov + */ +#include +#include +#include + +#include "ucsi.h" + +struct yoga_c630_ucsi { + struct yoga_c630_ec *ec; + struct ucsi *ucsi; + struct notifier_block nb; + struct completion complete; + unsigned long flags; +#define UCSI_C630_COMMAND_PENDING 0 +#define UCSI_C630_ACK_PENDING 1 + u16 version; +}; + +static int yoga_c630_ucsi_read(struct ucsi *ucsi, unsigned int offset, + void *val, size_t val_len) +{ + struct yoga_c630_ucsi *uec =3D ucsi_get_drvdata(ucsi); + u8 buf[YOGA_C630_UCSI_READ_SIZE]; + int ret; + + ret =3D yoga_c630_ec_ucsi_read(uec->ec, buf); + if (ret) + return ret; + + if (offset =3D=3D UCSI_VERSION) { + memcpy(val, &uec->version, min(val_len, sizeof(uec->version))); + return 0; + } + + if (offset =3D=3D UCSI_CCI) + memcpy(val, buf, + min(val_len, YOGA_C630_UCSI_CCI_SIZE)); + else if (offset =3D=3D UCSI_MESSAGE_IN) + memcpy(val, buf + YOGA_C630_UCSI_CCI_SIZE, + min(val_len, YOGA_C630_UCSI_DATA_SIZE)); + else + return -EINVAL; + + return 0; +} + +static int yoga_c630_ucsi_async_write(struct ucsi *ucsi, unsigned int off= set, + const void *val, size_t val_len) +{ + struct yoga_c630_ucsi *uec =3D ucsi_get_drvdata(ucsi); + + if (offset !=3D UCSI_CONTROL || + val_len !=3D YOGA_C630_UCSI_WRITE_SIZE) + return -EINVAL; + + return yoga_c630_ec_ucsi_write(uec->ec, val); +} + +static int yoga_c630_ucsi_sync_write(struct ucsi *ucsi, unsigned int offs= et, + const void *val, size_t val_len) +{ + struct yoga_c630_ucsi *uec =3D ucsi_get_drvdata(ucsi); + bool ack =3D UCSI_COMMAND(*(u64 *)val) =3D=3D UCSI_ACK_CC_CI; + int ret; + + if (ack) + set_bit(UCSI_C630_ACK_PENDING, &uec->flags); + else + set_bit(UCSI_C630_COMMAND_PENDING, &uec->flags); + + reinit_completion(&uec->complete); + + ret =3D yoga_c630_ucsi_async_write(ucsi, offset, val, val_len); + if (ret) + goto out_clear_bit; + + if (!wait_for_completion_timeout(&uec->complete, 5 * HZ)) + ret =3D -ETIMEDOUT; + +out_clear_bit: + if (ack) + clear_bit(UCSI_C630_ACK_PENDING, &uec->flags); + else + clear_bit(UCSI_C630_COMMAND_PENDING, &uec->flags); + + return ret; +} + +const struct ucsi_operations yoga_c630_ucsi_ops =3D { + .read =3D yoga_c630_ucsi_read, + .sync_write =3D yoga_c630_ucsi_sync_write, + .async_write =3D yoga_c630_ucsi_async_write, +}; + +static int yoga_c630_ucsi_notify(struct notifier_block *nb, + unsigned long action, void *data) +{ + struct yoga_c630_ucsi *uec =3D container_of(nb, struct yoga_c630_ucsi, nb= ); + u32 cci; + int ret; + + if (action =3D=3D LENOVO_EC_EVENT_USB || action =3D=3D LENOVO_EC_EVENT_HP= D) { + ucsi_connector_change(uec->ucsi, 1); + return NOTIFY_OK; + } + + if (action !=3D LENOVO_EC_EVENT_UCSI) + return NOTIFY_DONE; + + ret =3D uec->ucsi->ops->read(uec->ucsi, UCSI_CCI, &cci, sizeof(cci)); + if (ret) + return NOTIFY_DONE; + + if (UCSI_CCI_CONNECTOR(cci)) + ucsi_connector_change(uec->ucsi, UCSI_CCI_CONNECTOR(cci)); + + if (cci & UCSI_CCI_ACK_COMPLETE && + test_bit(UCSI_C630_ACK_PENDING, &uec->flags)) + complete(&uec->complete); + if (cci & UCSI_CCI_COMMAND_COMPLETE && + test_bit(UCSI_C630_COMMAND_PENDING, &uec->flags)) + complete(&uec->complete); + + return NOTIFY_OK; +} + +static int yoga_c630_ucsi_probe(struct auxiliary_device *adev, + const struct auxiliary_device_id *id) +{ + struct yoga_c630_ec *ec =3D adev->dev.platform_data; + struct yoga_c630_ucsi *uec; + int ret; + + uec =3D devm_kzalloc(&adev->dev, sizeof(*uec), GFP_KERNEL); + if (!uec) + return -ENOMEM; + + uec->ec =3D ec; + init_completion(&uec->complete); + uec->nb.notifier_call =3D yoga_c630_ucsi_notify; + + uec->ucsi =3D ucsi_create(&adev->dev, &yoga_c630_ucsi_ops); + if (IS_ERR(uec->ucsi)) + return PTR_ERR(uec->ucsi); + + ucsi_set_drvdata(uec->ucsi, uec); + + uec->version =3D yoga_c630_ec_ucsi_get_version(uec->ec); + + auxiliary_set_drvdata(adev, uec); + + ret =3D yoga_c630_ec_register_notify(ec, &uec->nb); + if (ret) + return ret; + + return ucsi_register(uec->ucsi); +} + +static void yoga_c630_ucsi_remove(struct auxiliary_device *adev) +{ + struct yoga_c630_ucsi *uec =3D auxiliary_get_drvdata(adev); + + yoga_c630_ec_unregister_notify(uec->ec, &uec->nb); + ucsi_unregister(uec->ucsi); +} + +static const struct auxiliary_device_id yoga_c630_ucsi_id_table[] =3D { + { .name =3D YOGA_C630_MOD_NAME "." YOGA_C630_DEV_UCSI, }, + {} +}; +MODULE_DEVICE_TABLE(auxiliary, yoga_c630_ucsi_id_table); + +static struct auxiliary_driver yoga_c630_ucsi_driver =3D { + .name =3D YOGA_C630_DEV_UCSI, + .id_table =3D yoga_c630_ucsi_id_table, + .probe =3D yoga_c630_ucsi_probe, + .remove =3D yoga_c630_ucsi_remove, +}; + +module_auxiliary_driver(yoga_c630_ucsi_driver); + +MODULE_DESCRIPTION("Lenovo Yoga C630 UCSI"); +MODULE_LICENSE("GPL"); --=20 2.39.2 From nobody Fri Dec 19 21:11:51 2025 Received: from mail-lj1-f171.google.com (mail-lj1-f171.google.com [209.85.208.171]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 09BB517B4FA for ; Tue, 28 May 2024 20:44:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.171 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716929104; cv=none; b=gg8FWCGuVaz4jNjhOP8NhbqWXlbm+9TK472MrfI6Xpck5Q3h77/4dXtD+icXdcE0MbO2mbzPxqnGNguIMOKCejev/ZIGRXJVMsGQT1LmhMOfpAofDuxkzZXw02ZFB3o0FcEzQa6coi1DUdNg1y7mvApF013V9P4itn+QgnV8qW4= ARC-Message-Signature: i=1; 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Tue, 28 May 2024 13:44:57 -0700 (PDT) From: Dmitry Baryshkov Date: Tue, 28 May 2024 23:44:49 +0300 Subject: [PATCH v4 4/6] power: supply: lenovo_yoga_c630_battery: add Lenovo C630 driver Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240528-yoga-ec-driver-v4-4-4fa8dfaae7b6@linaro.org> References: <20240528-yoga-ec-driver-v4-0-4fa8dfaae7b6@linaro.org> In-Reply-To: <20240528-yoga-ec-driver-v4-0-4fa8dfaae7b6@linaro.org> To: Sebastian Reichel , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Hans de Goede , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Bryan O'Donoghue , Heikki Krogerus , Greg Kroah-Hartman , Konrad Dybcio Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-usb@vger.kernel.org, linux-arm-msm@vger.kernel.org, Nikita Travkin X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=15084; i=dmitry.baryshkov@linaro.org; h=from:subject:message-id; bh=ow1eTZcV+R5LsXpA87aPOh1pjE54fwdYN5zMsddX7J0=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBmVkJFH5uBSGa460IlsrMNF1b9Wp6t6OWZVrQVq Wjvhzm4Td2JATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCZlZCRQAKCRCLPIo+Aiko 1ct5B/9izpiOJVV8JCpZAL4ljFIncDVdRfr0pGadyRv+s8T346Wuf2ekY+agM1yCFzprgtugsFW VmJ4YjSN06w9X6Ho2OJyagTTMyOWV9lENsVI8yvV7JUGG9/dSFFPbtkQzD+uX1R70BgOUdSRqyq ml43FWGCm9Qgd1tzP7ii95yAdqj0IYri1TUHt9SMKM6tlYeMer8IcGP2NeRmyDoGVCQSdFM1Mf3 URcTG4hjqztIrYWptdDjpxMmavorH1U3yJ2MzfDyztqiqMpvZmf3DxIfr4Fa4KwqaDdKw05nRzp 9bwX4ouVOXXD/NeL+QHQn6mqcHyTfCiMJ1mQMxfsglf8Mrh9 X-Developer-Key: i=dmitry.baryshkov@linaro.org; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A On the Lenovo Yoga C630 WOS laptop the EC provides access to the adapter and battery status. Add the driver to read power supply status on the laptop. Signed-off-by: Dmitry Baryshkov --- drivers/power/supply/Kconfig | 9 + drivers/power/supply/Makefile | 1 + drivers/power/supply/lenovo_yoga_c630_battery.c | 479 ++++++++++++++++++++= ++++ 3 files changed, 489 insertions(+) diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig index 3e31375491d5..55ab8e90747d 100644 --- a/drivers/power/supply/Kconfig +++ b/drivers/power/supply/Kconfig @@ -167,6 +167,15 @@ config BATTERY_LEGO_EV3 help Say Y here to enable support for the LEGO MINDSTORMS EV3 battery. =20 +config BATTERY_LENOVO_YOGA_C630 + tristate "Lenovo Yoga C630 battery" + depends on OF && EC_LENOVO_YOGA_C630 + help + This driver enables battery support on the Lenovo Yoga C630 laptop. + + To compile the driver as a module, choose M here: the module will be + called lenovo_yoga_c630_battery. + config BATTERY_PMU tristate "Apple PMU battery" depends on PPC32 && ADB_PMU diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile index 58b567278034..8ebbdcf92dac 100644 --- a/drivers/power/supply/Makefile +++ b/drivers/power/supply/Makefile @@ -32,6 +32,7 @@ obj-$(CONFIG_BATTERY_DS2782) +=3D ds2782_battery.o obj-$(CONFIG_BATTERY_GAUGE_LTC2941) +=3D ltc2941-battery-gauge.o obj-$(CONFIG_BATTERY_GOLDFISH) +=3D goldfish_battery.o obj-$(CONFIG_BATTERY_LEGO_EV3) +=3D lego_ev3_battery.o +obj-$(CONFIG_BATTERY_LENOVO_YOGA_C630) +=3D lenovo_yoga_c630_battery.o obj-$(CONFIG_BATTERY_PMU) +=3D pmu_battery.o obj-$(CONFIG_BATTERY_QCOM_BATTMGR) +=3D qcom_battmgr.o obj-$(CONFIG_BATTERY_OLPC) +=3D olpc_battery.o diff --git a/drivers/power/supply/lenovo_yoga_c630_battery.c b/drivers/powe= r/supply/lenovo_yoga_c630_battery.c new file mode 100644 index 000000000000..76152ad38d46 --- /dev/null +++ b/drivers/power/supply/lenovo_yoga_c630_battery.c @@ -0,0 +1,479 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2022-2024, Linaro Ltd + * Authors: + * Bjorn Andersson + * Dmitry Baryshkov + */ +#include +#include +#include +#include +#include + +struct yoga_c630_psy { + struct yoga_c630_ec *ec; + struct device *dev; + struct device_node *of_node; + struct notifier_block nb; + struct mutex lock; + + struct power_supply *adp_psy; + struct power_supply *bat_psy; + + unsigned long last_status_update; + + bool adapter_online; + + bool unit_mA; + + bool bat_present; + unsigned int bat_status; + unsigned int design_capacity; + unsigned int design_voltage; + unsigned int full_charge_capacity; + + unsigned int capacity_now; + unsigned int voltage_now; + + int current_now; + int rate_now; +}; + +#define LENOVO_EC_CACHE_TIME (10 * HZ) + +#define LENOVO_EC_ADPT_STATUS 0xa3 +#define LENOVO_EC_ADPT_PRESENT BIT(7) +#define LENOVO_EC_BAT_ATTRIBUTES 0xc0 +#define LENOVO_EC_BAT_ATTR_UNIT_IS_MA BIT(1) +#define LENOVO_EC_BAT_STATUS 0xc1 +#define LENOVO_EC_BAT_REMAIN_CAPACITY 0xc2 +#define LENOVO_EC_BAT_VOLTAGE 0xc6 +#define LENOVO_EC_BAT_DESIGN_VOLTAGE 0xc8 +#define LENOVO_EC_BAT_DESIGN_CAPACITY 0xca +#define LENOVO_EC_BAT_FULL_CAPACITY 0xcc +#define LENOVO_EC_BAT_CURRENT 0xd2 +#define LENOVO_EC_BAT_FULL_FACTORY 0xd6 +#define LENOVO_EC_BAT_PRESENT 0xda +#define LENOVO_EC_BAT_FULL_REGISTER 0xdb +#define LENOVO_EC_BAT_FULL_IS_FACTORY BIT(0) + +/* the mutex should already be locked */ +static int yoga_c630_psy_update_bat_info(struct yoga_c630_psy *ecbat) +{ + struct yoga_c630_ec *ec =3D ecbat->ec; + int val; + + val =3D yoga_c630_ec_read8(ec, LENOVO_EC_BAT_PRESENT); + if (val < 0) + return val; + ecbat->bat_present =3D !!(val & BIT(0)); + if (!ecbat->bat_present) + return val; + + val =3D yoga_c630_ec_read8(ec, LENOVO_EC_BAT_ATTRIBUTES); + if (val < 0) + return val; + ecbat->unit_mA =3D val & LENOVO_EC_BAT_ATTR_UNIT_IS_MA; + + val =3D yoga_c630_ec_read16(ec, LENOVO_EC_BAT_DESIGN_CAPACITY); + if (val < 0) + return val; + ecbat->design_capacity =3D val * 1000; + + msleep(50); + + val =3D yoga_c630_ec_read16(ec, LENOVO_EC_BAT_DESIGN_VOLTAGE); + if (val < 0) + return val; + ecbat->design_voltage =3D val; + + msleep(50); + + val =3D yoga_c630_ec_read8(ec, LENOVO_EC_BAT_FULL_REGISTER); + if (val < 0) + return val; + if (val & LENOVO_EC_BAT_FULL_IS_FACTORY) + val =3D yoga_c630_ec_read16(ec, LENOVO_EC_BAT_FULL_FACTORY); + else + val =3D yoga_c630_ec_read16(ec, LENOVO_EC_BAT_FULL_CAPACITY); + if (val < 0) + return val; + + ecbat->full_charge_capacity =3D val * 1000; + + if (!ecbat->unit_mA) { + ecbat->design_capacity *=3D 10; + ecbat->full_charge_capacity *=3D 10; + } + + return 0; +} + +/* the mutex should already be locked */ +static int yoga_c630_psy_maybe_update_bat_status(struct yoga_c630_psy *ecb= at) +{ + struct yoga_c630_ec *ec =3D ecbat->ec; + int current_mA; + int val; + + if (time_before(jiffies, ecbat->last_status_update + LENOVO_EC_CACHE_TIME= )) + return 0; + + val =3D yoga_c630_ec_read8(ec, LENOVO_EC_BAT_STATUS); + if (val < 0) + return val; + ecbat->bat_status =3D val; + + msleep(50); + + val =3D yoga_c630_ec_read16(ec, LENOVO_EC_BAT_REMAIN_CAPACITY); + if (val < 0) + return val; + ecbat->capacity_now =3D val * 1000; + + msleep(50); + + val =3D yoga_c630_ec_read16(ec, LENOVO_EC_BAT_VOLTAGE); + if (val < 0) + return val; + ecbat->voltage_now =3D val * 1000; + + msleep(50); + + val =3D yoga_c630_ec_read16(ec, LENOVO_EC_BAT_CURRENT); + if (val < 0) + return val; + current_mA =3D sign_extend32(val, 15); + ecbat->current_now =3D current_mA * 1000; + ecbat->rate_now =3D current_mA * (ecbat->voltage_now / 1000); + + msleep(50); + + if (!ecbat->unit_mA) + ecbat->capacity_now *=3D 10; + + ecbat->last_status_update =3D jiffies; + + return 0; +} + +static int yoga_c630_psy_update_adapter_status(struct yoga_c630_psy *ecbat) +{ + struct yoga_c630_ec *ec =3D ecbat->ec; + int val; + + mutex_lock(&ecbat->lock); + + val =3D yoga_c630_ec_read8(ec, LENOVO_EC_ADPT_STATUS); + if (val > 0) + ecbat->adapter_online =3D FIELD_GET(LENOVO_EC_ADPT_PRESENT, val); + + mutex_unlock(&ecbat->lock); + + return val; +} + +static bool yoga_c630_psy_is_charged(struct yoga_c630_psy *ecbat) +{ + if (ecbat->bat_status !=3D 0) + return false; + + if (ecbat->full_charge_capacity <=3D ecbat->capacity_now) + return true; + + if (ecbat->design_capacity <=3D ecbat->capacity_now) + return true; + + return false; +} + +static int yoga_c630_psy_bat_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct yoga_c630_psy *ecbat =3D power_supply_get_drvdata(psy); + int rc =3D 0; + + if (!ecbat->bat_present && + psp !=3D POWER_SUPPLY_PROP_PRESENT) + return -ENODEV; + + mutex_lock(&ecbat->lock); + rc =3D yoga_c630_psy_maybe_update_bat_status(ecbat); + mutex_unlock(&ecbat->lock); + + if (rc) + return rc; + + switch (psp) { + case POWER_SUPPLY_PROP_STATUS: + if (ecbat->bat_status & BIT(0)) + val->intval =3D POWER_SUPPLY_STATUS_DISCHARGING; + else if (ecbat->bat_status & BIT(1)) + val->intval =3D POWER_SUPPLY_STATUS_CHARGING; + else if (yoga_c630_psy_is_charged(ecbat)) + val->intval =3D POWER_SUPPLY_STATUS_FULL; + else + val->intval =3D POWER_SUPPLY_STATUS_NOT_CHARGING; + break; + case POWER_SUPPLY_PROP_PRESENT: + val->intval =3D ecbat->bat_present; + break; + case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: + val->intval =3D ecbat->design_voltage; + break; + case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: + case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN: + val->intval =3D ecbat->design_capacity; + break; + case POWER_SUPPLY_PROP_CHARGE_FULL: + case POWER_SUPPLY_PROP_ENERGY_FULL: + val->intval =3D ecbat->full_charge_capacity; + break; + case POWER_SUPPLY_PROP_CHARGE_NOW: + case POWER_SUPPLY_PROP_ENERGY_NOW: + val->intval =3D ecbat->capacity_now; + break; + case POWER_SUPPLY_PROP_CURRENT_NOW: + val->intval =3D ecbat->current_now; + break; + case POWER_SUPPLY_PROP_POWER_NOW: + val->intval =3D ecbat->rate_now; + break; + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + val->intval =3D ecbat->voltage_now; + break; + case POWER_SUPPLY_PROP_TECHNOLOGY: + val->intval =3D POWER_SUPPLY_TECHNOLOGY_LION; + break; + case POWER_SUPPLY_PROP_MODEL_NAME: + val->strval =3D "PABAS0241231"; + break; + case POWER_SUPPLY_PROP_MANUFACTURER: + val->strval =3D "Compal"; + break; + default: + rc =3D -EINVAL; + break; + } + + return rc; +} + +static enum power_supply_property yoga_c630_psy_bat_mA_properties[] =3D { + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_PRESENT, + POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, + POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, + POWER_SUPPLY_PROP_CHARGE_FULL, + POWER_SUPPLY_PROP_CHARGE_NOW, + POWER_SUPPLY_PROP_CURRENT_NOW, + POWER_SUPPLY_PROP_POWER_NOW, + POWER_SUPPLY_PROP_VOLTAGE_NOW, + POWER_SUPPLY_PROP_TECHNOLOGY, + POWER_SUPPLY_PROP_MODEL_NAME, + POWER_SUPPLY_PROP_MANUFACTURER, +}; + +static enum power_supply_property yoga_c630_psy_bat_mWh_properties[] =3D { + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_PRESENT, + POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, + POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, + POWER_SUPPLY_PROP_ENERGY_FULL, + POWER_SUPPLY_PROP_ENERGY_NOW, + POWER_SUPPLY_PROP_CURRENT_NOW, + POWER_SUPPLY_PROP_POWER_NOW, + POWER_SUPPLY_PROP_VOLTAGE_NOW, + POWER_SUPPLY_PROP_TECHNOLOGY, + POWER_SUPPLY_PROP_MODEL_NAME, + POWER_SUPPLY_PROP_MANUFACTURER, +}; + +static const struct power_supply_desc yoga_c630_psy_bat_psy_desc_mA =3D { + .name =3D "yoga-c630-battery", + .type =3D POWER_SUPPLY_TYPE_BATTERY, + .properties =3D yoga_c630_psy_bat_mA_properties, + .num_properties =3D ARRAY_SIZE(yoga_c630_psy_bat_mA_properties), + .get_property =3D yoga_c630_psy_bat_get_property, +}; + +static const struct power_supply_desc yoga_c630_psy_bat_psy_desc_mWh =3D { + .name =3D "yoga-c630-battery", + .type =3D POWER_SUPPLY_TYPE_BATTERY, + .properties =3D yoga_c630_psy_bat_mWh_properties, + .num_properties =3D ARRAY_SIZE(yoga_c630_psy_bat_mWh_properties), + .get_property =3D yoga_c630_psy_bat_get_property, +}; + +static int yoga_c630_psy_adpt_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct yoga_c630_psy *ecbat =3D power_supply_get_drvdata(psy); + int rc =3D 0; + + yoga_c630_psy_update_adapter_status(ecbat); + + switch (psp) { + case POWER_SUPPLY_PROP_ONLINE: + val->intval =3D ecbat->adapter_online; + break; + default: + rc =3D -EINVAL; + break; + } + + return rc; +} + +static enum power_supply_property yoga_c630_psy_adpt_properties[] =3D { + POWER_SUPPLY_PROP_ONLINE, +}; + +static const struct power_supply_desc yoga_c630_psy_adpt_psy_desc =3D { + .name =3D "yoga-c630-adapter", + .type =3D POWER_SUPPLY_TYPE_USB_TYPE_C, + .properties =3D yoga_c630_psy_adpt_properties, + .num_properties =3D ARRAY_SIZE(yoga_c630_psy_adpt_properties), + .get_property =3D yoga_c630_psy_adpt_get_property, +}; + +static int yoga_c630_psy_register_bat_psy(struct yoga_c630_psy *ecbat) +{ + struct power_supply_config bat_cfg =3D {}; + + bat_cfg.drv_data =3D ecbat; + bat_cfg.of_node =3D ecbat->of_node; + if (ecbat->unit_mA) + ecbat->bat_psy =3D power_supply_register_no_ws(ecbat->dev, &yoga_c630_ps= y_bat_psy_desc_mA, &bat_cfg); + else + ecbat->bat_psy =3D power_supply_register_no_ws(ecbat->dev, &yoga_c630_ps= y_bat_psy_desc_mWh, &bat_cfg); + if (IS_ERR(ecbat->bat_psy)) { + dev_err(ecbat->dev, "failed to register battery supply\n"); + return PTR_ERR(ecbat->bat_psy); + } + + return 0; +} + +static void yoga_c630_ec_refresh_bat_info(struct yoga_c630_psy *ecbat) +{ + bool current_unit; + + mutex_lock(&ecbat->lock); + current_unit =3D ecbat->unit_mA; + + yoga_c630_psy_update_bat_info(ecbat); + + if (current_unit !=3D ecbat->unit_mA) { + power_supply_unregister(ecbat->bat_psy); + yoga_c630_psy_register_bat_psy(ecbat); + } + + mutex_unlock(&ecbat->lock); +} + +static int yoga_c630_psy_notify(struct notifier_block *nb, + unsigned long action, void *data) +{ + struct yoga_c630_psy *ecbat =3D container_of(nb, struct yoga_c630_psy, nb= ); + + switch (action) { + case LENOVO_EC_EVENT_BAT_INFO: + yoga_c630_ec_refresh_bat_info(ecbat); + break; + case LENOVO_EC_EVENT_BAT_ADPT_STATUS: + power_supply_changed(ecbat->adp_psy); + fallthrough; + case LENOVO_EC_EVENT_BAT_STATUS: + power_supply_changed(ecbat->bat_psy); + break; + } + + return NOTIFY_OK; +} + +static int yoga_c630_psy_probe(struct auxiliary_device *adev, + const struct auxiliary_device_id *id) +{ + struct yoga_c630_ec *ec =3D adev->dev.platform_data; + struct power_supply_config adp_cfg =3D {}; + struct device *dev =3D &adev->dev; + struct yoga_c630_psy *ecbat; + int ret; + + ecbat =3D devm_kzalloc(&adev->dev, sizeof(*ecbat), GFP_KERNEL); + if (!ecbat) + return -ENOMEM; + + ecbat->ec =3D ec; + ecbat->dev =3D dev; + mutex_init(&ecbat->lock); + ecbat->of_node =3D adev->dev.parent->of_node; + ecbat->nb.notifier_call =3D yoga_c630_psy_notify; + + auxiliary_set_drvdata(adev, ecbat); + + adp_cfg.drv_data =3D ecbat; + adp_cfg.of_node =3D ecbat->of_node; + adp_cfg.supplied_to =3D (char **)&yoga_c630_psy_bat_psy_desc_mA.name; + adp_cfg.num_supplicants =3D 1; + ecbat->adp_psy =3D devm_power_supply_register_no_ws(dev, &yoga_c630_psy_a= dpt_psy_desc, &adp_cfg); + if (IS_ERR(ecbat->adp_psy)) { + dev_err(dev, "failed to register AC adapter supply\n"); + return PTR_ERR(ecbat->adp_psy); + } + + mutex_lock(&ecbat->lock); + + ret =3D yoga_c630_psy_update_bat_info(ecbat); + if (ret) + goto err_unlock; + + ret =3D yoga_c630_psy_register_bat_psy(ecbat); + if (ret) + goto err_unlock; + + mutex_unlock(&ecbat->lock); + + ret =3D yoga_c630_ec_register_notify(ecbat->ec, &ecbat->nb); + if (ret) + goto err_unreg_bat; + + return 0; + +err_unlock: + mutex_unlock(&ecbat->lock); + +err_unreg_bat: + power_supply_unregister(ecbat->bat_psy); + return ret; +} + +static void yoga_c630_psy_remove(struct auxiliary_device *adev) +{ + struct yoga_c630_psy *ecbat =3D auxiliary_get_drvdata(adev); + + yoga_c630_ec_unregister_notify(ecbat->ec, &ecbat->nb); + power_supply_unregister(ecbat->bat_psy); +} + +static const struct auxiliary_device_id yoga_c630_psy_id_table[] =3D { + { .name =3D YOGA_C630_MOD_NAME "." YOGA_C630_DEV_PSY, }, + {} +}; +MODULE_DEVICE_TABLE(auxiliary, yoga_c630_psy_id_table); + +static struct auxiliary_driver yoga_c630_psy_driver =3D { + .name =3D YOGA_C630_DEV_PSY, + .id_table =3D yoga_c630_psy_id_table, + .probe =3D yoga_c630_psy_probe, + .remove =3D yoga_c630_psy_remove, +}; + +module_auxiliary_driver(yoga_c630_psy_driver); + +MODULE_DESCRIPTION("Lenovo Yoga C630 psy"); +MODULE_LICENSE("GPL"); --=20 2.39.2 From nobody Fri Dec 19 21:11:51 2025 Received: from mail-lj1-f176.google.com (mail-lj1-f176.google.com [209.85.208.176]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 66ADB17BB16 for ; Tue, 28 May 2024 20:45:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.176 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716929103; cv=none; b=JJj0GQ2pVxfJjGabq7QIPxQ4VXpSHGn21zWBbM8qM8FSFW3z9Ic4C8O8BnAdOuBWUdwbT387AuZaKF4izdu+OCwZ1Y98wH9IpQQyet1AiasfGrIeEZdfJvtDjGgxrvnX1CFMEBekWIaUCVn4Pgf+XApnJ7W7i7JNIV7fm/7M0Sw= ARC-Message-Signature: i=1; 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Tue, 28 May 2024 13:44:58 -0700 (PDT) From: Dmitry Baryshkov Date: Tue, 28 May 2024 23:44:50 +0300 Subject: [PATCH v4 5/6] arm64: dts: qcom: sdm845: describe connections of USB/DP port Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240528-yoga-ec-driver-v4-5-4fa8dfaae7b6@linaro.org> References: <20240528-yoga-ec-driver-v4-0-4fa8dfaae7b6@linaro.org> In-Reply-To: <20240528-yoga-ec-driver-v4-0-4fa8dfaae7b6@linaro.org> To: Sebastian Reichel , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Hans de Goede , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Bryan O'Donoghue , Heikki Krogerus , Greg Kroah-Hartman , Konrad Dybcio Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-usb@vger.kernel.org, linux-arm-msm@vger.kernel.org, Nikita Travkin X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1907; i=dmitry.baryshkov@linaro.org; h=from:subject:message-id; bh=9jn734YvtZuEkzjxMWQQ/F5cN34ZH6ms3Y1ko1ls5C4=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBmVkJFcnASXQ8B385etFaYrBnafXn1fBmsqc3oT r4821H0zkKJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCZlZCRQAKCRCLPIo+Aiko 1QenB/48cAngVc+F7/8Jx4s4LYSp3b3wOKl6IOF4pxmFZETpcPLFED/bp2tPHloteFHwNDeMw50 4YT23ZMTHem7xda70l8z61JaPPMhk+6D0Ixa6npyLpdFP68HNySS/S4HteruC7QBYMVxU7lDoQi j7yVFrOmkrM11ykvQIiNkO7LqruEywAKtkWckYTs37GPoTnBAqM0W1HQc29wyl6/yxdkNGoAbt4 MryC4Y9ODV5e04qUiPQVcY0kQ6U3UT2Lq+hPjstYbxusFeSuKWr35xflwO4chH22g2lwdKF3WQ1 9EpDtgckKJDwhKihNuNVt2jBBNjwzNSoIt/pvTumK5R/mjkY X-Developer-Key: i=dmitry.baryshkov@linaro.org; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A Describe links between the first USB3 host and the DisplayPort that is routed to the same pins. Signed-off-by: Dmitry Baryshkov Reviewed-by: Bryan O'Donoghue --- arch/arm64/boot/dts/qcom/sdm845.dtsi | 53 ++++++++++++++++++++++++++++++++= +++- 1 file changed, 52 insertions(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qco= m/sdm845.dtsi index 26b1638c76f9..5276ab0433b6 100644 --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi @@ -4030,6 +4030,35 @@ usb_1_qmpphy: phy@88e8000 { =20 #clock-cells =3D <1>; #phy-cells =3D <1>; + orientation-switch; + + ports { + #address-cells =3D <1>; + #size-cells =3D <0>; + + port@0 { + reg =3D <0>; + + usb_1_qmpphy_out: endpoint { + }; + }; + + port@1 { + reg =3D <1>; + + usb_1_qmpphy_usb_ss_in: endpoint { + remote-endpoint =3D <&usb_1_dwc3_ss>; + }; + }; + + port@2 { + reg =3D <2>; + + usb_1_qmpphy_dp_in: endpoint { + remote-endpoint =3D <&dp_out>; + }; + }; + }; }; =20 usb_2_qmpphy: phy@88eb000 { @@ -4110,6 +4139,26 @@ usb_1_dwc3: usb@a600000 { snps,dis_enblslpm_quirk; phys =3D <&usb_1_hsphy>, <&usb_1_qmpphy QMP_USB43DP_USB3_PHY>; phy-names =3D "usb2-phy", "usb3-phy"; + + ports { + #address-cells =3D <1>; + #size-cells =3D <0>; + + port@0 { + reg =3D <0>; + + usb_1_dwc3_hs: endpoint { + }; + }; + + port@1 { + reg =3D <1>; + + usb_1_dwc3_ss: endpoint { + remote-endpoint =3D <&usb_1_qmpphy_usb_ss_in>; + }; + }; + }; }; }; =20 @@ -4600,7 +4649,9 @@ dp_in: endpoint { =20 port@1 { reg =3D <1>; - dp_out: endpoint { }; + dp_out: endpoint { + remote-endpoint =3D <&usb_1_qmpphy_dp_in>; + }; }; }; =20 --=20 2.39.2 From nobody Fri Dec 19 21:11:51 2025 Received: from mail-lj1-f170.google.com (mail-lj1-f170.google.com [209.85.208.170]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 442DA17BB34 for ; Tue, 28 May 2024 20:45:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.170 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; 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Tue, 28 May 2024 13:44:59 -0700 (PDT) Received: from umbar.lan ([192.130.178.91]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-2e95bdcd21esm22759431fa.100.2024.05.28.13.44.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 May 2024 13:44:58 -0700 (PDT) From: Dmitry Baryshkov Date: Tue, 28 May 2024 23:44:51 +0300 Subject: [PATCH v4 6/6] arm64: dts: qcom: c630: Add Embedded Controller node Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240528-yoga-ec-driver-v4-6-4fa8dfaae7b6@linaro.org> References: <20240528-yoga-ec-driver-v4-0-4fa8dfaae7b6@linaro.org> In-Reply-To: <20240528-yoga-ec-driver-v4-0-4fa8dfaae7b6@linaro.org> To: Sebastian Reichel , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Hans de Goede , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Bryan O'Donoghue , Heikki Krogerus , Greg Kroah-Hartman , Konrad Dybcio Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-usb@vger.kernel.org, linux-arm-msm@vger.kernel.org, Nikita Travkin X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2519; i=dmitry.baryshkov@linaro.org; h=from:subject:message-id; bh=bA1p0cRkECu7GMqmk/topvubbrncOP6kZTaonC6jN7M=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBmVkJFAXEp9tKkxo7NknQ+tidoQZZPdzp370X0j rtHCxOysfeJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCZlZCRQAKCRCLPIo+Aiko 1c0pB/wOgOBbdwEX24H46JkHY1fliIKjJy4u9Ft75jDUuZaO00i2JLpps6f4vvnxzXgfXofjZD4 wSdjXbcADHhq2yV9LvJU1/+4trOGe/HDzI6B8e5tUQfFoXWYrla+hU+nnCw9ov5sRZEhOTvGUNj 3o8wdOMx3yJo6rT2tw9QrRfhyRVT5xvbnNjG6x8r/ooQakK8ID5YNiETUn02aAPVoCdyi++Y9xt +mQlsia4H6YaBUZ1/SJC9JKxAUChdx9WD5pMcUCxT7rgqFO66EsjhJPHL9Gy0xvilzaTNgyDBUs 7GseHlR4WEb1e7sbT50GCRB2/iYKEAZWykFRIE8W0e3QGV5/ X-Developer-Key: i=dmitry.baryshkov@linaro.org; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A From: Bjorn Andersson The Embedded Controller in the Lenovo Yoga C630 is accessible on &i2c1 and provides battery and adapter status, as well as altmode notifications for the second USB Type-C port. Add a definition for the EC. Signed-off-by: Bjorn Andersson Signed-off-by: Dmitry Baryshkov --- .../boot/dts/qcom/sdm850-lenovo-yoga-c630.dts | 75 ++++++++++++++++++= ++++ 1 file changed, 75 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts b/arch/ar= m64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts index 47dc42f6e936..07bff1c5a7ab 100644 --- a/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts +++ b/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts @@ -370,6 +370,66 @@ zap-shader { &i2c1 { status =3D "okay"; clock-frequency =3D <400000>; + + embedded-controller@70 { + compatible =3D "lenovo,yoga-c630-ec"; + reg =3D <0x70>; + + interrupts-extended =3D <&tlmm 20 IRQ_TYPE_LEVEL_HIGH>; + + pinctrl-names =3D "default"; + pinctrl-0 =3D <&ec_int_state>; + + #address-cells =3D <1>; + #size-cells =3D <0>; + + connector@0 { + compatible =3D "usb-c-connector"; + reg =3D <0>; + power-role =3D "dual"; + data-role =3D "host"; + + ports { + #address-cells =3D <1>; + #size-cells =3D <0>; + + port@0 { + reg =3D <0>; + + ucsi0_hs_in: endpoint { + remote-endpoint =3D <&usb_1_dwc3_hs>; + }; + }; + + port@1 { + reg =3D <1>; + + ucsi0_ss_in: endpoint { + remote-endpoint =3D <&usb_1_qmpphy_out>; + }; + }; + + port@2 { + reg =3D <2>; + + ucsi0_sbu: endpoint { + }; + }; + }; + }; + + connector@1 { + compatible =3D "usb-c-connector"; + reg =3D <1>; + power-role =3D "dual"; + data-role =3D "host"; + + /* + * connected to the onboard USB hub, orientation is + * handled by the controller + */ + }; + }; }; =20 &i2c3 { @@ -694,6 +754,13 @@ mode_pin_active: mode-pin-state { =20 bias-disable; }; + + ec_int_state: ec-int-state { + pins =3D "gpio20"; + function =3D "gpio"; + + bias-disable; + }; }; =20 &uart6 { @@ -741,6 +808,10 @@ &usb_1_dwc3 { dr_mode =3D "host"; }; =20 +&usb_1_dwc3_hs { + remote-endpoint =3D <&ucsi0_hs_in>; +}; + &usb_1_hsphy { status =3D "okay"; =20 @@ -761,6 +832,10 @@ &usb_1_qmpphy { vdda-pll-supply =3D <&vdda_usb1_ss_core>; }; =20 +&usb_1_qmpphy_out { + remote-endpoint =3D <&ucsi0_ss_in>; +}; + &usb_2 { status =3D "okay"; }; --=20 2.39.2