From patchwork Thu Dec 7 11:20:14 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nikita Travkin X-Patchwork-Id: 752428 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=trvn.ru header.i=@trvn.ru header.b="AFiJP5ce" Received: from box.trvn.ru (box.trvn.ru [194.87.146.52]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 19B1CFA; Thu, 7 Dec 2023 03:21:44 -0800 (PST) Received: from authenticated-user (box.trvn.ru [194.87.146.52]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by box.trvn.ru (Postfix) with ESMTPSA id 3273242BF5; Thu, 7 Dec 2023 16:21:31 +0500 (+05) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=trvn.ru; s=mail; t=1701948091; bh=OVug0fcHzBuiMohyozxqFLLN6RaBpXIu8wb22geRV3k=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=AFiJP5cesn6C0ry0Vs93cSIjOwvMQcr7q+77X71CT35XVWok2Tf8pn14LSUocbdRI qHm2rR2h4gr5tVoDk0GbSBCl64Ovkc/BiScBEtrIgfSj9ze3mbws0PwXJYlzSWF2IF Qa4t6NWZY9XgL7ilDD0IKpc86o1qjfTGZ6sCfDe0yXGWAIAjOmIgvD+73+SZ2hjcp9 oxgn+hgPq5PEzmd6CywNQyWtnEuv2ZTL39Zd57tWGVhhiADcjxDra9L+rpHA4Vakk+ 8k6wn3Rsvs2TPieBLccbjCPBAQ3BbIXyTKk2LsW5RrMnAwfXb2rA9bu2E0bjvYuvUM zsn+lp+L7UKtQ== From: Nikita Travkin Date: Thu, 07 Dec 2023 16:20:14 +0500 Subject: [PATCH 1/3] dt-bindings: power: supply: Add Acer Aspire 1 EC Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20231207-aspire1-ec-v1-1-ba9e1c227007@trvn.ru> References: <20231207-aspire1-ec-v1-0-ba9e1c227007@trvn.ru> In-Reply-To: <20231207-aspire1-ec-v1-0-ba9e1c227007@trvn.ru> To: Sebastian Reichel , Rob Herring , Krzysztof Kozlowski , Conor Dooley , cros-qcom-dts-watchers@chromium.org, Andy Gross , Bjorn Andersson , Konrad Dybcio Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Nikita Travkin X-Developer-Signature: v=1; a=openpgp-sha256; l=2421; i=nikita@trvn.ru; h=from:subject:message-id; bh=OVug0fcHzBuiMohyozxqFLLN6RaBpXIu8wb22geRV3k=; b=owEBbQKS/ZANAwAIAUMc7O4oGb91AcsmYgBlcaq409/BVxOnfWYZ+z1ZJYYE8Xc6MJ6xU1cIP lBvSsE9U5GJAjMEAAEIAB0WIQTAhK9UUj+qg34uxUdDHOzuKBm/dQUCZXGquAAKCRBDHOzuKBm/ df6zEACse1aIpU1mRX3tSoIe5Y7M3NMqOpxe8iJhp1i0mB0m2vom80/IwOYuNMp4MmMxwFhh7H0 yKC2PsrMXliSFKX/50RruA7mealm3XHgGoI3L+t3ZOSo3HCbiOTGgqUH4HTe/uqzsX/N0HoY07q QRwLTlFXppYc1+cCw1b2175ICR3Al1qvSBOJRm0YeyVW0A3XabyrwbC3PbjGEXt6rL+SWIt+7Hl 9q8+z++PhgP2RNJq3KeY02CrrFqViPCgabDzjWXWlcDHkgc/pSSlKWge+WGi9Smr8tfBqb/2rir JkGAPwr6ocvAMctcWXgxLz6ZbEqQsiaMY3Ns7OF5T/XyUTPNWpaeY7ray5JMpiBhUPw70yVzJrs e4pZtwwcZq9iECrHG4piUUvncMBA/JlrGuxRsrr94dX5Io3hKqk3xvI3+T7oHMB/f769d24R+SG cxLcEzrMfRPf3mPstaIOy+sb/A2CN+WkZnOY6PtTP+E94O2TekkSZW+IzxtX6SsNJ149yqoqeZS 8YTfLdRSa9gAXpW1+NxhpjabNBn/OC1Iy9W3xSkmU3i85fPR67LTli8AwDDx3CW3HLpPiFkc5lL yv+/vJ2IUcT0Zw4p5cMho9ANgYebeGhX/K98Po+6flMdUX7AgB+W27Dgj/aigHF4q7u6+Atxo5O WpbpKiiEWMUnqcQ== X-Developer-Key: i=nikita@trvn.ru; a=openpgp; fpr=C084AF54523FAA837E2EC547431CECEE2819BF75 Add binding for the EC found in the Acer Aspire 1 laptop. Signed-off-by: Nikita Travkin --- .../bindings/power/supply/acer,aspire1-ec.yaml | 73 ++++++++++++++++++++++ 1 file changed, 73 insertions(+) diff --git a/Documentation/devicetree/bindings/power/supply/acer,aspire1-ec.yaml b/Documentation/devicetree/bindings/power/supply/acer,aspire1-ec.yaml new file mode 100644 index 000000000000..3fc6dea7fa5c --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/acer,aspire1-ec.yaml @@ -0,0 +1,73 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/power/supply/acer,aspire1-ec.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Acer Aspire 1 Embedded Controller + +maintainers: + - Nikita Travkin + +description: + The Acer Aspire 1 laptop uses an embedded controller to control battery + and charging as well as to provide a set of misc features such as the + laptop lid status and HPD events for the USB Type-C DP alt mode. + +properties: + compatible: + const: acer,aspire1-ec + + reg: + const: 0x76 + + interrupts: + maxItems: 1 + + acer,media-keys-on-top: + description: Configure the keyboard layout to use media features of + the fn row when the fn key is not pressed. The firmware may choose + to add this property when user selects the fn mode in the firmware + setup utility. + type: boolean + + connector: + $ref: /schemas/connector/usb-connector.yaml# + + properties: + reg: + maxItems: 1 + + unevaluatedProperties: false + +required: + - compatible + - reg + - interrupts + +additionalProperties: false + +examples: + - |+ + #include + i2c { + #address-cells = <1>; + #size-cells = <0>; + + embedded-controller@76 { + compatible = "acer,aspire1-ec"; + reg = <0x76>; + + interrupts-extended = <&tlmm 30 IRQ_TYPE_LEVEL_LOW>; + + connector { + compatible = "usb-c-connector"; + + port { + ec_dp_in: endpoint { + remote-endpoint = <&mdss_dp_out>; + }; + }; + }; + }; + }; From patchwork Thu Dec 7 11:20:15 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nikita Travkin X-Patchwork-Id: 752427 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=trvn.ru header.i=@trvn.ru header.b="07WDwAPD" Received: from box.trvn.ru (box.trvn.ru [194.87.146.52]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 370C611F; Thu, 7 Dec 2023 03:21:45 -0800 (PST) Received: from authenticated-user (box.trvn.ru [194.87.146.52]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by box.trvn.ru (Postfix) with ESMTPSA id BAF7842BF7; Thu, 7 Dec 2023 16:21:31 +0500 (+05) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=trvn.ru; s=mail; t=1701948092; bh=ece5ccmSr8WYEr0PIacZKn4N6T5suV02hIkbQE4RaZU=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=07WDwAPDD0IX7usUj4jFjXFRAj9QWyCyXQ6GdeO4xJnQ4r+JEvpx2ELrFbdXJQfEv ThGwSC3OdL01f0K/M2MmqtKdT6mBBkF0vPFeVen8ZZAVVA8JUfYlU1Jt793dibD/Qx 2B2/M2JuvfbYVSGizlJwm7GLIVOeafEmyLLvI5yhW37PbP4x+MViMOoXBTxjNBXjbp vOwZC9OLnztEuAIRDAVfWfjmvJBkZDc0ZioGWRtBfMMaH+NZOBNuLAUU56YhzJeSqW w3jiS/RrcxCQybP0NfbXRDysm2q/qV3bZAkxzGWTFxNDG0nijtd+0jAqVpATTyhZLs 0zNWhepd7NsrA== From: Nikita Travkin Date: Thu, 07 Dec 2023 16:20:15 +0500 Subject: [PATCH 2/3] power: supply: Add Acer Aspire 1 embedded controller driver Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20231207-aspire1-ec-v1-2-ba9e1c227007@trvn.ru> References: <20231207-aspire1-ec-v1-0-ba9e1c227007@trvn.ru> In-Reply-To: <20231207-aspire1-ec-v1-0-ba9e1c227007@trvn.ru> To: Sebastian Reichel , Rob Herring , Krzysztof Kozlowski , Conor Dooley , cros-qcom-dts-watchers@chromium.org, Andy Gross , Bjorn Andersson , Konrad Dybcio Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Nikita Travkin X-Developer-Signature: v=1; a=openpgp-sha256; l=14875; i=nikita@trvn.ru; h=from:subject:message-id; bh=ece5ccmSr8WYEr0PIacZKn4N6T5suV02hIkbQE4RaZU=; b=owEBbQKS/ZANAwAIAUMc7O4oGb91AcsmYgBlcaq42oyVfb+8As2+UP6FIdUQ/cOm1rxGXO47Z RE8/3XicESJAjMEAAEIAB0WIQTAhK9UUj+qg34uxUdDHOzuKBm/dQUCZXGquAAKCRBDHOzuKBm/ dRmKEACb44dnXxR014UE4zEItLRFo+/XIiX+U2XwhrI+mAYLZ7mJF6BphP4V/0ZdGAriJPSJmTs i97pT/Q2RRWsZcBZTmC9sI8xGqcXc4tQcXdcxfGn3gZHcZlCgpOMPaJmuGqfAuQP9qeXgLhW4XK SzRns7Y6AqpDzlGGmJwGb5vaCY0GZbeQJM7MA/cK8uPx2We9iqwMxK1zZ9vA3V5lnYC2P7s3tY8 aHc5NzZve35Le2CL8lcbVx2dw0CKb2I4NCxKCFeYTbrwiDRmoEm/mlq5wY2OnArBVKC/YjSz1ae zbOpjToBVjZ173wkt9p3kCRUE6fUvemOI63lNToAt6wUdF/vv8u9QKcwfpKR11qhqZUVk98vXeI 950rW+21RSuP10CtCZ1F3QUumYnltFRr1N3IaaWFD5Q6v40GuX9d0A6xPRBGUQdy9nKWJb1SDzJ iUGhSeDQk/lFGHhckbRowiVO/xAvbVzU5Z/a9Zv5qtWiGhrPgWAsln6WTK57NLoU3clTmQv4sMm 7u9duEgJDH8zaSI69b9m+EddWiyw8m7BoiuvxdbIlsdPiRhMZoPCgpCK5arrddAhqJUD5I9NbsA xp/X9MxriR9hl7Q+r3yCLQ2zUUBOlJr9Rn8rp4jjprmY2a4WhJwuhMP11b/VGgB1yrZLxW8EOOP Pr8jAMwNY6RO5uA== X-Developer-Key: i=nikita@trvn.ru; a=openpgp; fpr=C084AF54523FAA837E2EC547431CECEE2819BF75 Acer Aspire 1 is a Snapdragon 7c based laptop. It uses an embedded controller to control the charging and battery management, as well as to perform a set of misc functions. Unfortunately, while all this functionality is implemented in ACPI, it's currently not possible to use ACPI to boot Linux on such Qualcomm devices. To allow Linux to still support the features provided by EC, this driver reimplments the relevant ACPI parts. This allows us to boot the laptop with Device Tree and retain all the features. Signed-off-by: Nikita Travkin --- drivers/power/supply/Kconfig | 14 ++ drivers/power/supply/Makefile | 1 + drivers/power/supply/acer-aspire1-ec.c | 432 +++++++++++++++++++++++++++++++++ 3 files changed, 447 insertions(+) diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig index f21cb05815ec..47d2ad14447b 100644 --- a/drivers/power/supply/Kconfig +++ b/drivers/power/supply/Kconfig @@ -984,4 +984,18 @@ config FUEL_GAUGE_MM8013 the state of charge, temperature, cycle count, actual and design capacity, etc. +config EC_ACER_ASPIRE1 + tristate "Acer Aspire 1 Emedded Controller driver" + depends on I2C + depends on DRM + help + Say Y here to enable the EC driver for the (Snapdragon-based) + Acer Aspire 1 laptop. The EC handles battery and charging + monitoring as well as some misc functions like the lid sensor + and USB Type-C DP HPD events. + + This driver provides battery and AC status support for the mentioned + laptop where this information is not properly exposed via the + standard ACPI devices. + endif # POWER_SUPPLY diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile index 58b567278034..6049c87820c0 100644 --- a/drivers/power/supply/Makefile +++ b/drivers/power/supply/Makefile @@ -114,3 +114,4 @@ obj-$(CONFIG_CHARGER_SURFACE) += surface_charger.o obj-$(CONFIG_BATTERY_UG3105) += ug3105_battery.o obj-$(CONFIG_CHARGER_QCOM_SMB2) += qcom_pmi8998_charger.o obj-$(CONFIG_FUEL_GAUGE_MM8013) += mm8013.o +obj-$(CONFIG_EC_ACER_ASPIRE1) += acer-aspire1-ec.o diff --git a/drivers/power/supply/acer-aspire1-ec.c b/drivers/power/supply/acer-aspire1-ec.c new file mode 100644 index 000000000000..845a11abf951 --- /dev/null +++ b/drivers/power/supply/acer-aspire1-ec.c @@ -0,0 +1,432 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* Copyright (c) 2023, Nikita Travkin */ + +#include +#include +#include +#include +#include +#include + +#include +#include + +#define ASPIRE_EC_EVENT 0x05 + +#define ASPIRE_EC_EVENT_WATCHDOG 0x20 +#define ASPIRE_EC_EVENT_LID_CLOSE 0x9b +#define ASPIRE_EC_EVENT_LID_OPEN 0x9c +#define ASPIRE_EC_EVENT_FG_INF_CHG 0x85 +#define ASPIRE_EC_EVENT_FG_STA_CHG 0xc6 +#define ASPIRE_EC_EVENT_HPD_DIS 0xa3 +#define ASPIRE_EC_EVENT_HPD_CON 0xa4 + +#define ASPIRE_EC_FG_DYNAMIC 0x07 +#define ASPIRE_EC_FG_STATIC 0x08 + +#define ASPIRE_EC_FG_FLAG_PRESENT BIT(0) +#define ASPIRE_EC_FG_FLAG_FULL BIT(1) +#define ASPIRE_EC_FG_FLAG_DISCHARGING BIT(2) +#define ASPIRE_EC_FG_FLAG_CHARGING BIT(3) + +#define ASPIRE_EC_RAM_READ 0x20 +#define ASPIRE_EC_RAM_WRITE 0x21 + +#define ASPIRE_EC_RAM_WATCHDOG 0x19 +#define ASPIRE_EC_RAM_KBD_MODE 0x43 + +#define ASPIRE_EC_RAM_KBD_FN_EN BIT(0) +#define ASPIRE_EC_RAM_KBD_MEDIA_ON_TOP BIT(5) +#define ASPIRE_EC_RAM_KBD_ALWAYS_SET BIT(6) +#define ASPIRE_EC_RAM_KBD_NUM_LAYER_EN BIT(7) + +#define ASPIRE_EC_RAM_KBD_MODE_2 0x60 + +#define ASPIRE_EC_RAM_KBD_MEDIA_NOTIFY BIT(3) + +#define ASPIRE_EC_RAM_HPD_STATUS 0xf4 +#define ASPIRE_EC_HPD_CONNECTED 0x03 + +#define ASPIRE_EC_RAM_LID_STATUS 0x4c +#define ASPIRE_EC_LID_OPEN BIT(6) + +struct aspire_ec { + struct i2c_client *client; + struct power_supply *psy; + struct input_dev *idev; + + bool bridge_configured; + struct drm_bridge bridge; + struct work_struct work; +}; + +struct aspire_ec_psy_static_data { + u8 unk1; + u8 flags; + __le16 unk2; + __le16 voltage_design; + __le16 capacity_full; + __le16 unk3; + __le16 serial; + u8 model_id; + u8 vendor_id; +} __packed; + +static const char * const aspire_ec_psy_battery_model[] = { + "AP18C4K", + "AP18C8K", + "AP19B8K", + "AP16M4J", + "AP16M5J", +}; + +static const char * const aspire_ec_psy_battery_vendor[] = { + "SANYO", + "SONY", + "PANASONIC", + "SAMSUNG", + "SIMPLO", + "MOTOROLA", + "CELXPERT", + "LGC", + "GETAC", + "MURATA", +}; + +struct aspire_ec_psy_dynamic_data { + u8 unk1; + u8 flags; + u8 unk2; + __le16 capacity_now; + __le16 voltage_now; + __le16 current_now; + __le16 unk3; + __le16 unk4; +} __packed; + +static int aspire_ec_psy_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct aspire_ec *ec = power_supply_get_drvdata(psy); + struct aspire_ec_psy_static_data sdat; + struct aspire_ec_psy_dynamic_data ddat; + + i2c_smbus_read_i2c_block_data(ec->client, ASPIRE_EC_FG_STATIC, sizeof(sdat), (u8 *)&sdat); + i2c_smbus_read_i2c_block_data(ec->client, ASPIRE_EC_FG_DYNAMIC, sizeof(ddat), (u8 *)&ddat); + + switch (psp) { + case POWER_SUPPLY_PROP_STATUS: + val->intval = POWER_SUPPLY_STATUS_UNKNOWN; + if (ddat.flags & ASPIRE_EC_FG_FLAG_CHARGING) + val->intval = POWER_SUPPLY_STATUS_CHARGING; + else if (ddat.flags & ASPIRE_EC_FG_FLAG_DISCHARGING) + val->intval = POWER_SUPPLY_STATUS_DISCHARGING; + else if (ddat.flags & ASPIRE_EC_FG_FLAG_FULL) + val->intval = POWER_SUPPLY_STATUS_FULL; + break; + + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + val->intval = le16_to_cpu(ddat.voltage_now) * 1000; + break; + + case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN: + val->intval = le16_to_cpu(sdat.voltage_design) * 1000; + break; + + case POWER_SUPPLY_PROP_CHARGE_NOW: + val->intval = le16_to_cpu(ddat.capacity_now) * 1000; + break; + + case POWER_SUPPLY_PROP_CHARGE_FULL: + val->intval = le16_to_cpu(sdat.capacity_full) * 1000; + break; + + case POWER_SUPPLY_PROP_CAPACITY: + val->intval = le16_to_cpu(ddat.capacity_now) * 100 + / le16_to_cpu(sdat.capacity_full); + break; + + case POWER_SUPPLY_PROP_CURRENT_NOW: + val->intval = (s16)le16_to_cpu(ddat.current_now) * 1000; + break; + + case POWER_SUPPLY_PROP_PRESENT: + val->intval = 1; + break; + + case POWER_SUPPLY_PROP_SCOPE: + val->intval = POWER_SUPPLY_SCOPE_SYSTEM; + break; + + case POWER_SUPPLY_PROP_MODEL_NAME: + if (sdat.model_id - 1 < ARRAY_SIZE(aspire_ec_psy_battery_model)) + val->strval = aspire_ec_psy_battery_model[sdat.model_id - 1]; + else + val->strval = "Unknown"; + break; + + case POWER_SUPPLY_PROP_MANUFACTURER: + if (sdat.vendor_id - 3 < ARRAY_SIZE(aspire_ec_psy_battery_vendor)) + val->strval = aspire_ec_psy_battery_vendor[sdat.vendor_id - 3]; + else + val->strval = "Unknown"; + break; + + default: + return -EINVAL; + } + return 0; +} + +static enum power_supply_property aspire_ec_psy_props[] = { + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_VOLTAGE_NOW, + POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN, + POWER_SUPPLY_PROP_CHARGE_NOW, + POWER_SUPPLY_PROP_CHARGE_FULL, + POWER_SUPPLY_PROP_CAPACITY, + POWER_SUPPLY_PROP_CURRENT_NOW, + POWER_SUPPLY_PROP_PRESENT, + POWER_SUPPLY_PROP_SCOPE, + POWER_SUPPLY_PROP_MODEL_NAME, + POWER_SUPPLY_PROP_MANUFACTURER, +}; + +static const struct power_supply_desc aspire_ec_psy_desc = { + .name = "aspire-ec", + .type = POWER_SUPPLY_TYPE_BATTERY, + .get_property = aspire_ec_psy_get_property, + .properties = aspire_ec_psy_props, + .num_properties = ARRAY_SIZE(aspire_ec_psy_props), +}; + +static int aspire_ec_ram_read(struct i2c_client *client, u8 off, u8 *data, u8 data_len) +{ + i2c_smbus_write_byte_data(client, ASPIRE_EC_RAM_READ, off); + i2c_smbus_read_i2c_block_data(client, ASPIRE_EC_RAM_READ, data_len, data); + return 0; +} + +static int aspire_ec_ram_write(struct i2c_client *client, u8 off, u8 data) +{ + u8 tmp[2] = {off, data}; + + i2c_smbus_write_i2c_block_data(client, ASPIRE_EC_RAM_WRITE, sizeof(tmp), tmp); + return 0; +} + +static irqreturn_t aspire_ec_irq_handler(int irq, void *data) +{ + struct aspire_ec *ec = data; + int id; + u8 tmp; + + /* + * The original ACPI firmware actually has a small sleep in the handler. + * + * It seems like in most cases it's not needed but when the device + * just exits suspend, our i2c driver has a brief time where data + * transfer is not possible yet. So this delay allows us to suppress + * quite a bunch of spurious error messages in dmesg. Thus it's kept. + */ + usleep_range(15000, 30000); + + id = i2c_smbus_read_byte_data(ec->client, ASPIRE_EC_EVENT); + if (id < 0) { + dev_err(&ec->client->dev, "Failed to read event id: %pe\n", ERR_PTR(id)); + return IRQ_HANDLED; + } + + switch (id) { + case 0x0: /* No event */ + break; + + case ASPIRE_EC_EVENT_WATCHDOG: + /* + * Here acpi responds to the event and clears some bit. + * Notify (\_SB.I2C3.BAT1, 0x81) // Information Change + * Notify (\_SB.I2C3.ADP1, 0x80) // Status Change + */ + aspire_ec_ram_read(ec->client, ASPIRE_EC_RAM_WATCHDOG, &tmp, sizeof(tmp)); + aspire_ec_ram_write(ec->client, ASPIRE_EC_RAM_WATCHDOG, tmp & 0xbf); + break; + + case ASPIRE_EC_EVENT_LID_CLOSE: + /* Notify (\_SB.LID0, 0x80) // Status Change */ + input_report_switch(ec->idev, SW_LID, 1); + input_sync(ec->idev); + break; + + case ASPIRE_EC_EVENT_LID_OPEN: + /* Notify (\_SB.LID0, 0x80) // Status Change */ + input_report_switch(ec->idev, SW_LID, 0); + input_sync(ec->idev); + break; + + case ASPIRE_EC_EVENT_FG_INF_CHG: + /* Notify (\_SB.I2C3.BAT1, 0x81) // Information Change */ + case ASPIRE_EC_EVENT_FG_STA_CHG: + /* Notify (\_SB.I2C3.BAT1, 0x80) // Status Change */ + power_supply_changed(ec->psy); + break; + + case ASPIRE_EC_EVENT_HPD_DIS: + if (ec->bridge_configured) + drm_bridge_hpd_notify(&ec->bridge, connector_status_disconnected); + break; + + case ASPIRE_EC_EVENT_HPD_CON: + if (ec->bridge_configured) + drm_bridge_hpd_notify(&ec->bridge, connector_status_connected); + break; + + default: + dev_warn(&ec->client->dev, "Unknown event id=0x%x\n", id); + } + + return IRQ_HANDLED; +} + +static int aspire_ec_bridge_attach(struct drm_bridge *bridge, enum drm_bridge_attach_flags flags) +{ + return flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR ? 0 : -EINVAL; +} + +static void aspire_ec_bridge_update_hpd_work(struct work_struct *work) +{ + struct aspire_ec *ec = container_of(work, struct aspire_ec, work); + u8 tmp; + + aspire_ec_ram_read(ec->client, ASPIRE_EC_RAM_HPD_STATUS, &tmp, sizeof(tmp)); + if (tmp == ASPIRE_EC_HPD_CONNECTED) + drm_bridge_hpd_notify(&ec->bridge, connector_status_connected); + else + drm_bridge_hpd_notify(&ec->bridge, connector_status_disconnected); +} + +static void aspire_ec_bridge_hpd_enable(struct drm_bridge *bridge) +{ + struct aspire_ec *ec = container_of(bridge, struct aspire_ec, bridge); + + schedule_work(&ec->work); +} + +static const struct drm_bridge_funcs aspire_ec_bridge_funcs = { + .hpd_enable = aspire_ec_bridge_hpd_enable, + .attach = aspire_ec_bridge_attach, +}; + +static int aspire_ec_probe(struct i2c_client *client) +{ + struct power_supply_config psy_cfg = {0}; + struct device *dev = &client->dev; + struct fwnode_handle *fwnode; + struct aspire_ec *ec; + int ret; + u8 tmp; + + ec = devm_kzalloc(dev, sizeof(*ec), GFP_KERNEL); + if (!ec) + return -ENOMEM; + + ec->client = client; + i2c_set_clientdata(client, ec); + + /* Battery status reports */ + psy_cfg.drv_data = ec; + ec->psy = devm_power_supply_register(dev, &aspire_ec_psy_desc, &psy_cfg); + if (IS_ERR(ec->psy)) + return dev_err_probe(dev, PTR_ERR(ec->psy), + "Failed to register power supply\n"); + + /* Lid switch */ + ec->idev = devm_input_allocate_device(dev); + if (!ec->idev) + return -ENOMEM; + + ec->idev->name = "aspire-ec"; + ec->idev->phys = "aspire-ec/input0"; + input_set_capability(ec->idev, EV_SW, SW_LID); + + ret = input_register_device(ec->idev); + if (ret) + return dev_err_probe(dev, ret, "Input device register failed\n"); + + /* Enable the keyboard fn keys */ + tmp = ASPIRE_EC_RAM_KBD_FN_EN | ASPIRE_EC_RAM_KBD_ALWAYS_SET; + if (device_property_read_bool(dev, "acer,media-keys-on-top")) + tmp |= ASPIRE_EC_RAM_KBD_MEDIA_ON_TOP; + aspire_ec_ram_write(client, ASPIRE_EC_RAM_KBD_MODE, tmp); + + aspire_ec_ram_read(client, ASPIRE_EC_RAM_KBD_MODE_2, &tmp, sizeof(tmp)); + tmp |= ASPIRE_EC_RAM_KBD_MEDIA_NOTIFY; + aspire_ec_ram_write(client, ASPIRE_EC_RAM_KBD_MODE_2, tmp); + + /* External Type-C display attach reports */ + fwnode = device_get_named_child_node(dev, "connector"); + if (fwnode) { + INIT_WORK(&ec->work, aspire_ec_bridge_update_hpd_work); + ec->bridge.funcs = &aspire_ec_bridge_funcs; + ec->bridge.of_node = to_of_node(fwnode); + ec->bridge.ops = DRM_BRIDGE_OP_HPD; + ec->bridge.type = DRM_MODE_CONNECTOR_USB; + + ret = devm_drm_bridge_add(dev, &ec->bridge); + if (ret) { + fwnode_handle_put(fwnode); + return dev_err_probe(dev, ret, "Failed to register drm bridge\n"); + } + + ec->bridge_configured = true; + } + + ret = devm_request_threaded_irq(dev, client->irq, NULL, + aspire_ec_irq_handler, IRQF_ONESHOT, + dev_name(dev), ec); + if (ret) + return dev_err_probe(dev, ret, "Failed to request irq\n"); + + return 0; +} + +static int aspire_ec_resume(struct device *dev) +{ + struct aspire_ec *ec = i2c_get_clientdata(to_i2c_client(dev)); + u8 tmp; + + aspire_ec_ram_read(ec->client, ASPIRE_EC_RAM_LID_STATUS, &tmp, sizeof(tmp)); + input_report_switch(ec->idev, SW_LID, !!(tmp & ASPIRE_EC_LID_OPEN)); + input_sync(ec->idev); + + return 0; +} + +static const struct i2c_device_id aspire_ec_id[] = { + { "aspire1-ec", }, + { } +}; +MODULE_DEVICE_TABLE(i2c, aspire_ec_id); + +static const struct of_device_id aspire_ec_of_match[] = { + { .compatible = "acer,aspire1-ec", }, + { } +}; +MODULE_DEVICE_TABLE(of, aspire_ec_of_match); + +static DEFINE_SIMPLE_DEV_PM_OPS(aspire_ec_pm_ops, NULL, aspire_ec_resume); + +static struct i2c_driver aspire_ec_driver = { + .driver = { + .name = "aspire-ec", + .of_match_table = aspire_ec_of_match, + .pm = pm_sleep_ptr(&aspire_ec_pm_ops), + }, + .probe = aspire_ec_probe, + .id_table = aspire_ec_id, +}; +module_i2c_driver(aspire_ec_driver); + +MODULE_DESCRIPTION("Acer Aspire 1 embedded controller"); +MODULE_AUTHOR("Nikita Travkin "); +MODULE_LICENSE("GPL"); From patchwork Thu Dec 7 11:20:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nikita Travkin X-Patchwork-Id: 751557 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=trvn.ru header.i=@trvn.ru header.b="Hoa7p5Rd" Received: from box.trvn.ru (box.trvn.ru [194.87.146.52]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 38C11D5B; Thu, 7 Dec 2023 03:21:45 -0800 (PST) Received: from authenticated-user (box.trvn.ru [194.87.146.52]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by box.trvn.ru (Postfix) with ESMTPSA id 6280942BF9; Thu, 7 Dec 2023 16:21:32 +0500 (+05) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=trvn.ru; s=mail; t=1701948093; bh=DBs7WSTRsWsDILHndJynPWxZbqbs68OouyDKWJNsV3g=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=Hoa7p5Rd2KrsNDYToioeGzMosAXV7/09a6h/s8R4LlgeC3Y30rZrpurXBXl9x3KwV QXrAjwrbRMVpz1CBZ/eJZDRLADrNSlokhxEdlt/4ENQco2tgHQtRfMI++11UmOGXSm cTbPqGDpd5LGzP4nJRGlAtMcBlvXvvI9U9AaQ19NI8aIEE5qqckgajA+3ggKCt8Of9 TlIl8FrHoCOpyuBcORakF4ikUA/AQEfGHXH7VHzq0YSQwI9NiEm4T+31L8wXYi1IFQ KSFTyj9Nx88WD9AasjsYff4mWxfe5j9uk+Njcye1+YrOW0q3Zaj4VbgPkr7hfVSx3m vgurVni9tPpdg== From: Nikita Travkin Date: Thu, 07 Dec 2023 16:20:16 +0500 Subject: [PATCH 3/3] arm64: dts: qcom: acer-aspire1: Add embedded controller Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20231207-aspire1-ec-v1-3-ba9e1c227007@trvn.ru> References: <20231207-aspire1-ec-v1-0-ba9e1c227007@trvn.ru> In-Reply-To: <20231207-aspire1-ec-v1-0-ba9e1c227007@trvn.ru> To: Sebastian Reichel , Rob Herring , Krzysztof Kozlowski , Conor Dooley , cros-qcom-dts-watchers@chromium.org, Andy Gross , Bjorn Andersson , Konrad Dybcio Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Nikita Travkin X-Developer-Signature: v=1; a=openpgp-sha256; l=2154; i=nikita@trvn.ru; h=from:subject:message-id; bh=DBs7WSTRsWsDILHndJynPWxZbqbs68OouyDKWJNsV3g=; b=owEBbQKS/ZANAwAIAUMc7O4oGb91AcsmYgBlcaq5lixDHcI7sL22tX5Fb/fuC6XCZ7nHDrS2U q1H48A8gwCJAjMEAAEIAB0WIQTAhK9UUj+qg34uxUdDHOzuKBm/dQUCZXGquQAKCRBDHOzuKBm/ dTr0EACcFglXesnZoTHlKdBZhPYb1BP5An7F1fTIw0shv46k1t6TRjQgdj8a5A0iID3DaHg5ORL XCjyi+YNFNCj63sD/l2mWi+NV054o3NtfcPJB5hgxgHoenY62tSEVhnV0CeFLnoFUl6Hr64h1Gj GYWhtSL0/bqan02l5uYiRD8sK1nIplY5dYSgaqJSrhWe3xYYZWkmwTOr/TUMoeRSk5djCi1WPi+ 6brOb+p1MPxJJvKtDKOhk93MBj39KF2WHiYPGOUsuqkcAtyd6QzQfWETYA0nfIAiR9F3rxIvvx3 nqcCTuU6YMpFf/FVHvKY+ugVuyvPVZ8HMXLQHswQTVbfs6Wvicb8Lvt4deDLHOrY7d9qgE3OTEe tm66QoI/jakdaTEfVB98k1s2D07vWIfIdciRQRtQSJG1XkCGRuBDqp+JBY8bv6Bhbsqie5q8G/O hLDz0xZIn8uOQr4v+0B4lxnN6y58lCBXpVqIT8Jl3AFjl6DpGtkkgre7n9OZ3ue1AIiuSacdznO GZOiP0Ad5yanbWgGlYGpmfs9I9RPJY06+DIl0gf6TLOMW5wOXd9tAvB36YYMMvud1GdrCfG/Jal XZPVmczk5jI2LVAuRVeCdGYNgf7KZK2yxigaQk97Ki9GmIyhkjIuRDEm6VQvTVnQTVHUd+urjQp Nq+AOrD8VoWggyA== X-Developer-Key: i=nikita@trvn.ru; a=openpgp; fpr=C084AF54523FAA837E2EC547431CECEE2819BF75 The laptop contains an embedded controller that provides a set of features: - Battery and charger monitoring - USB Type-C DP alt mode HPD monitoring - Lid status detection - Small amount of keyboard configuration* [*] The keyboard is handled by the same EC but it has a dedicated i2c bus and is already enabled. This port only provides fn key behavior configuration. Add the EC to the device tree and describe the relationship between the EC-managed type-c port and the SoC DisplayPort. Signed-off-by: Nikita Travkin --- arch/arm64/boot/dts/qcom/sc7180-acer-aspire1.dts | 40 +++++++++++++++++++++++- 1 file changed, 39 insertions(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/qcom/sc7180-acer-aspire1.dts b/arch/arm64/boot/dts/qcom/sc7180-acer-aspire1.dts index dbb48934d499..a29f542fa612 100644 --- a/arch/arm64/boot/dts/qcom/sc7180-acer-aspire1.dts +++ b/arch/arm64/boot/dts/qcom/sc7180-acer-aspire1.dts @@ -147,7 +147,25 @@ &i2c2 { clock-frequency = <400000>; status = "okay"; - /* embedded-controller@76 */ + embedded-controller@76 { + compatible = "acer,aspire1-ec"; + reg = <0x76>; + + interrupts-extended = <&tlmm 30 IRQ_TYPE_LEVEL_LOW>; + + pinctrl-0 = <&ec_int_default>; + pinctrl-names = "default"; + + connector { + compatible = "usb-c-connector"; + + port { + ec_dp_in: endpoint { + remote-endpoint = <&mdss_dp_out>; + }; + }; + }; + }; }; &i2c4 { @@ -298,6 +316,19 @@ &mdss { status = "okay"; }; +&mdss_dp { + data-lanes = <0 1>; + + vdda-1p2-supply = <&vreg_l3c_1p2>; + vdda-0p9-supply = <&vreg_l4a_0p8>; + + status = "okay"; +}; + +&mdss_dp_out { + remote-endpoint = <&ec_dp_in>; +}; + &mdss_dsi0 { vdda-supply = <&vreg_l3c_1p2>; status = "okay"; @@ -687,6 +718,13 @@ codec_irq_default: codec-irq-deault-state { bias-disable; }; + ec_int_default: ec-int-default-state { + pins = "gpio30"; + function = "gpio"; + drive-strength = <2>; + bias-disable; + }; + edp_bridge_irq_default: edp-bridge-irq-default-state { pins = "gpio11"; function = "gpio";