From patchwork Tue Oct 29 20:01:59 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Murphy X-Patchwork-Id: 11218487 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CC9DD14DB for ; Tue, 29 Oct 2019 20:03:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A98D020656 for ; Tue, 29 Oct 2019 20:03:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="y/w8ui+0" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726594AbfJ2UDB (ORCPT ); Tue, 29 Oct 2019 16:03:01 -0400 Received: from lelv0143.ext.ti.com ([198.47.23.248]:41256 "EHLO lelv0143.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725879AbfJ2UDA (ORCPT ); Tue, 29 Oct 2019 16:03:00 -0400 Received: from fllv0034.itg.ti.com ([10.64.40.246]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id x9TK2w4E111113; Tue, 29 Oct 2019 15:02:58 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1572379378; bh=ka5ha/Tzt+vFQfCRNPrMeCS7n3mWeBklbHZMPqoPqP0=; h=From:To:CC:Subject:Date; b=y/w8ui+0jTGaRe5VY5J0+15q/yTkW0pETDpYv51cW3auUUEajIpokgBqRNfnrgjbq 7wQhAEKQn7VjWSoIp6BYXKuJJz+4VAQeej6wIm6CnLXhJjKPuFON3Is6CPG/oqKX5Z H1WkTRAM+S2/lPQRvyBDAcn8xPR2pf1YHZ8I2tOo= Received: from DFLE113.ent.ti.com (dfle113.ent.ti.com [10.64.6.34]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x9TK2wm6021244 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 29 Oct 2019 15:02:58 -0500 Received: from DFLE115.ent.ti.com (10.64.6.36) by DFLE113.ent.ti.com (10.64.6.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Tue, 29 Oct 2019 15:02:45 -0500 Received: from fllv0039.itg.ti.com (10.64.41.19) by DFLE115.ent.ti.com (10.64.6.36) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5 via Frontend Transport; Tue, 29 Oct 2019 15:02:45 -0500 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0039.itg.ti.com (8.15.2/8.15.2) with ESMTP id x9TK2vVt124135; Tue, 29 Oct 2019 15:02:57 -0500 From: Dan Murphy To: , CC: , Dan Murphy Subject: [PATCH v2 1/3] power_supply: Add additional health properties to the header Date: Tue, 29 Oct 2019 15:01:59 -0500 Message-ID: <20191029200201.24483-1-dmurphy@ti.com> X-Mailer: git-send-email 2.22.0.214.g8dca754b1e MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Add HEALTH_WARM, HEALTH_COOL and HEALTH_HOT to the health enum. Signed-off-by: Dan Murphy --- v2 - No changes include/linux/power_supply.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index 28413f737e7d..bd0d3225f245 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -61,6 +61,9 @@ enum { POWER_SUPPLY_HEALTH_WATCHDOG_TIMER_EXPIRE, POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE, POWER_SUPPLY_HEALTH_OVERCURRENT, + POWER_SUPPLY_HEALTH_WARM, + POWER_SUPPLY_HEALTH_COOL, + POWER_SUPPLY_HEALTH_HOT, }; enum { From patchwork Tue Oct 29 20:02:00 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Murphy X-Patchwork-Id: 11218489 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8434014DB for ; Tue, 29 Oct 2019 20:03:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 617BC20656 for ; Tue, 29 Oct 2019 20:03:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="afrHLPwe" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726510AbfJ2UDF (ORCPT ); Tue, 29 Oct 2019 16:03:05 -0400 Received: from fllv0015.ext.ti.com ([198.47.19.141]:60056 "EHLO fllv0015.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725879AbfJ2UDF (ORCPT ); Tue, 29 Oct 2019 16:03:05 -0400 Received: from fllv0034.itg.ti.com ([10.64.40.246]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id x9TK338K088307; Tue, 29 Oct 2019 15:03:03 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1572379383; bh=y49m7ZpWcPJRbHzJ5NyQ2rYAhLlPDo7yM8vHzQkdWVM=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=afrHLPweEXrdOEpyTD99KiKCeKtVttg2g+CvasU7FwiUw++SEWz3evJIdVSY8/5+U uSM4STsNBX4rtoEE1XLtcNhJfki1OBquicZXq2lKwIEYt+LlbaQWgZkLGHnNqVqC/6 NPxUoot6Tde0cuzzwAkGJCTu72BSc4qqlgXXgpg4= Received: from DLEE114.ent.ti.com (dlee114.ent.ti.com [157.170.170.25]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x9TK33ZS021582 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 29 Oct 2019 15:03:03 -0500 Received: from DLEE103.ent.ti.com (157.170.170.33) by DLEE114.ent.ti.com (157.170.170.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Tue, 29 Oct 2019 15:02:50 -0500 Received: from fllv0040.itg.ti.com (10.64.41.20) by DLEE103.ent.ti.com (157.170.170.33) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5 via Frontend Transport; Tue, 29 Oct 2019 15:02:50 -0500 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id x9TK33Jb033223; Tue, 29 Oct 2019 15:03:03 -0500 From: Dan Murphy To: , CC: , Dan Murphy , Rob Herring Subject: [PATCH v2 2/3] dt-bindings: power: Add the bq2515x family dt bindings Date: Tue, 29 Oct 2019 15:02:00 -0500 Message-ID: <20191029200201.24483-2-dmurphy@ti.com> X-Mailer: git-send-email 2.22.0.214.g8dca754b1e In-Reply-To: <20191029200201.24483-1-dmurphy@ti.com> References: <20191029200201.24483-1-dmurphy@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Add the bindings for the bq25150 and bq25155 500mA charging ICs from Texas Instruments. Datasheet: http://www.ti.com/lit/ds/symlink/bq25150.pdf http://www.ti.com/lit/ds/symlink/bq25155.pdf Signed-off-by: Dan Murphy CC: Rob Herring --- v2 - Converted to yaml format and removed ti,* properties for already defined properties .../bindings/power/supply/bq2515x.yaml | 85 +++++++++++++++++++ 1 file changed, 85 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/supply/bq2515x.yaml diff --git a/Documentation/devicetree/bindings/power/supply/bq2515x.yaml b/Documentation/devicetree/bindings/power/supply/bq2515x.yaml new file mode 100644 index 000000000000..4e6225056f45 --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/bq2515x.yaml @@ -0,0 +1,85 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +# Copyright (C) 2019 Texas Instruments Incorporated +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/power/supply/bq2515x.yaml#" +$schema: "http://devicetree.org/meta-schemas/core.yaml#" + +title: TI bq2515x 500-mA Linear charger family + +maintainers: + - Dan Murphy + +description: | + The BQ2515x family is a highly integrated battery charge management IC that + integrates the most common functions for wearable devices, namely a charger, + an output voltage rail, ADC for battery and system monitoring, and + push-button controller. + + Specifications about the charger can be found at: + http://www.ti.com/lit/ds/symlink/bq25150.pdf + http://www.ti.com/lit/ds/symlink/bq25155.pdf + +properties: + compatible: + enum: + - ti,bq25150 + - ti,bq25155 + + reg: + maxItems: 1 + + pg-gpios: + description: | + GPIO used for connecting the bq2515x device PG (Power Good) + pin. This pin should be used if possible as this is the + recommended way to obtain the charger's input PG state. + If this pin is not specified a software-based approach for PG + detection is used. + + reset-gpios: + description: | + GPIO used for hardware reset. + + low-power-gpios: + description: | + GPIO used for low power mode of IC. + + charge-enable-gpios: + description: | + GPIO used to turn on and off charging. + + constant-charge-current-max-microamp: + description: | + Maximum charging current in micro Amps. + minimum: 50000 + maximum: 600000 + + voltage-max-design-microvolt: + description: | + Maximum charging voltage in micro volts. + minimum: 3600000 + maximum: 4600000 + +required: + - compatible + - reg + +examples: + - | + #include + i2c0 { + #address-cells = <1>; + #size-cells = <0>; + charger@6b { + compatible = "ti,bq25150"; + reg = <0x6b>; + + pg-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>; + reset-gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>; + low-power-gpios = <&gpio0 15 GPIO_ACTIVE_HIGH>; + charge-enable-gpios = <&gpio0 13 GPIO_ACTIVE_LOW>; + constant-charge-current-max-microamp = <300000>; + voltage-max-design-microvolt = <4200000>; + }; + }; From patchwork Tue Oct 29 20:02:01 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Murphy X-Patchwork-Id: 11218491 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0392313B1 for ; Tue, 29 Oct 2019 20:03:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B62462087F for ; Tue, 29 Oct 2019 20:03:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="TJzrfXgz" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726157AbfJ2UDQ (ORCPT ); Tue, 29 Oct 2019 16:03:16 -0400 Received: from lelv0143.ext.ti.com ([198.47.23.248]:41282 "EHLO lelv0143.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725879AbfJ2UDP (ORCPT ); Tue, 29 Oct 2019 16:03:15 -0400 Received: from fllv0035.itg.ti.com ([10.64.41.0]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id x9TK3DfJ111200; Tue, 29 Oct 2019 15:03:13 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1572379393; bh=ua/77+a8WbLEYWO6cN9jOrx2EFxdcKAljeWUX0SRZUc=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=TJzrfXgzV4rOxsmkAlX1YQHWwWH0x3ffr1WKTWz4l5M/0TPgsCViC8B7FJh3M9z8A frpZbJfpXw9BazIUvEb0mq/yGxJEtT7qqERJmTgRK2NosmP5oVp3elXyvg36brJ+D0 BjKwhqEX7MhrdYIJAm+3G8+KHrN4WSDlBtNEfP4U= Received: from DFLE109.ent.ti.com (dfle109.ent.ti.com [10.64.6.30]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTP id x9TK3D3O068858; Tue, 29 Oct 2019 15:03:13 -0500 Received: from DFLE114.ent.ti.com (10.64.6.35) by DFLE109.ent.ti.com (10.64.6.30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Tue, 29 Oct 2019 15:03:01 -0500 Received: from fllv0040.itg.ti.com (10.64.41.20) by DFLE114.ent.ti.com (10.64.6.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5 via Frontend Transport; Tue, 29 Oct 2019 15:03:01 -0500 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id x9TK3DJY033591; Tue, 29 Oct 2019 15:03:13 -0500 From: Dan Murphy To: , CC: , Dan Murphy Subject: [PATCH v2 3/3] power: supply: bq2515x: Introduce the bq2515x family Date: Tue, 29 Oct 2019 15:02:01 -0500 Message-ID: <20191029200201.24483-3-dmurphy@ti.com> X-Mailer: git-send-email 2.22.0.214.g8dca754b1e In-Reply-To: <20191029200201.24483-1-dmurphy@ti.com> References: <20191029200201.24483-1-dmurphy@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Introduce the bq25150 and bq25155 supply chargers. Signed-off-by: Dan Murphy --- v2 - Made associated changes from DT changes, change conversions to uV as opposed to mV, and change OVERHEAT reporting to HOT. drivers/power/supply/Kconfig | 8 + drivers/power/supply/Makefile | 1 + drivers/power/supply/bq2515x_charger.c | 739 +++++++++++++++++++++++++ 3 files changed, 748 insertions(+) create mode 100644 drivers/power/supply/bq2515x_charger.c diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig index c84a7b1caeb6..d6228516fc70 100644 --- a/drivers/power/supply/Kconfig +++ b/drivers/power/supply/Kconfig @@ -589,6 +589,14 @@ config CHARGER_BQ24735 help Say Y to enable support for the TI BQ24735 battery charger. +config CHARGER_BQ2515X + tristate "TI BQ2515X battery charger family" + depends on I2C + depends on GPIOLIB || COMPILE_TEST + select REGMAP_I2C + help + Say Y to enable support for the TI BQ2515X battery charger. + config CHARGER_BQ25890 tristate "TI BQ25890 battery charger driver" depends on I2C diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile index 6c7da920ea83..8fcc175a7e22 100644 --- a/drivers/power/supply/Makefile +++ b/drivers/power/supply/Makefile @@ -80,6 +80,7 @@ obj-$(CONFIG_CHARGER_BQ2415X) += bq2415x_charger.o obj-$(CONFIG_CHARGER_BQ24190) += bq24190_charger.o obj-$(CONFIG_CHARGER_BQ24257) += bq24257_charger.o obj-$(CONFIG_CHARGER_BQ24735) += bq24735-charger.o +obj-$(CONFIG_CHARGER_BQ2515X) += bq2515x_charger.o obj-$(CONFIG_CHARGER_BQ25890) += bq25890_charger.o obj-$(CONFIG_CHARGER_SMB347) += smb347-charger.o obj-$(CONFIG_CHARGER_TPS65090) += tps65090-charger.o diff --git a/drivers/power/supply/bq2515x_charger.c b/drivers/power/supply/bq2515x_charger.c new file mode 100644 index 000000000000..a1ad071bffe2 --- /dev/null +++ b/drivers/power/supply/bq2515x_charger.c @@ -0,0 +1,739 @@ +// SPDX-License-Identifier: GPL-2.0 +// BQ2515X Battery Charger Driver +// Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com/ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define BQ2515X_MANUFACTURER "Texas Instruments" + +#define BQ2515X_STAT0 0x00 +#define BQ2515X_STAT1 0x01 +#define BQ2515X_STAT2 0x02 +#define BQ2515X_FLAG0 0x03 +#define BQ2515X_FLAG1 0x04 +#define BQ2515X_FLAG2 0x05 +#define BQ2515X_FLAG3 0x06 +#define BQ2515X_MASK0 0x07 +#define BQ2515X_MASK1 0x08 +#define BQ2515X_MASK2 0x09 +#define BQ2515X_MASK3 0x0a +#define BQ2515X_VBAT_CTRL 0x12 +#define BQ2515X_ICHG_CTRL 0x13 +#define BQ2515X_PCHRGCTRL 0x14 +#define BQ2515X_TERMCTRL 0x15 +#define BQ2515X_BUVLO 0x16 +#define BQ2515X_CHARGERCTRL0 0x17 +#define BQ2515X_CHARGERCTRL1 0x18 +#define BQ2515X_ILIMCTRL 0x19 +#define BQ2515X_LDOCTRL 0x1d +#define BQ2515X_MRCTRL 0x30 +#define BQ2515X_ICCTRL0 0x35 +#define BQ2515X_ICCTRL1 0x36 +#define BQ2515X_ICCTRL2 0x37 +#define BQ2515X_ADCCTRL0 0x40 +#define BQ2515X_ADCCTRL1 0x41 +#define BQ2515X_ADC_VBAT_M 0x42 +#define BQ2515X_ADC_VBAT_L 0x43 +#define BQ2515X_ADC_TS_M 0x44 +#define BQ2515X_ADC_TS_L 0x45 +#define BQ2515X_ADC_ICHG_M 0x46 +#define BQ2515X_ADC_ICHG_L 0x47 +#define BQ2515X_ADC_ADCIN_M 0x48 +#define BQ2515X_ADC_ADCIN_L 0x49 +#define BQ2515X_ADC_VIN_M 0x4a +#define BQ2515X_ADC_VIN_L 0x4b +#define BQ2515X_ADC_PMID_M 0x4c +#define BQ2515X_ADC_PMID_L 0x4d +#define BQ2515X_ADC_IIN_M 0x4e +#define BQ2515X_ADC_IIN_L 0x4f +#define BQ2515X_ADC_COMP1_M 0x52 +#define BQ2515X_ADC_COMP1_L 0X53 +#define BQ2515X_ADC_COMP2_M 0X54 +#define BQ2515X_ADC_COMP2_L 0x55 +#define BQ2515X_ADC_COMP3_M 0x56 +#define BQ2515X_ADC_COMP3_L 0x57 +#define BQ2515X_ADC_READ_EN 0x58 +#define BQ2515X_TS_FASTCHGCTRL 0x61 +#define BQ2515X_TS_COLD 0x62 +#define BQ2515X_TS_COOL 0x63 +#define BQ2515X_TS_WARM 0x64 +#define BQ2515X_TS_HOT 0x65 +#define BQ2515X_DEVICE_ID 0x6f + +#define BQ2515X_DIVISOR 65536 +#define BQ2515X_VBAT_BASE_VOLT 3600000 +#define BQ2515X_VBAT_REG_MAX 4600000 +#define BQ2515X_VBAT_REG_MIN 3600000 +#define BQ2515X_UV_FACTOR 10000 + +#define BQ2515X_ILIM_150MA 0x2 +#define BQ2515X_ILIM_MASK 0x7 +#define BQ2515X_HEALTH_MASK 0xf +#define BQ2515X_OVERVOLT_MASK 0x80 + +#define BQ2515X_HOT_FLAG BIT(0) +#define BQ2515X_WARM_FLAG BIT(1) +#define BQ2515X_COOL_FLAG BIT(2) +#define BQ2515X_COLD_FLAG BIT(3) +#define BQ2515X_SAFETY_TIMER_EXP BIT(5) + +#define BQ2515X_VIN_GOOD BIT(0) +#define BQ2515X_CHRG_DONE BIT(5) +#define BQ2515X_CV_CHRG_MODE BIT(6) + +static const int bq2515x_ilim_lvl_values[] = { + 50000, 100000, 150000, 200000, 300000, 400000, 500000, 600000 +}; + +/* initial field values, converted to register values */ +struct bq2515x_init_data { + int ichg; /* charge current */ + int vreg; /* regulation voltage */ +}; + +struct bq2515x_device { + struct power_supply *mains; + struct power_supply *battery; + struct i2c_client *client; + struct regmap *regmap; + struct device *dev; + struct mutex lock; + + struct gpio_desc *reset_gpio; + struct gpio_desc *lp_gpio; + struct gpio_desc *pg_gpio; + struct gpio_desc *ce_gpio; + + char model_name[I2C_NAME_SIZE]; + int mains_online; + + uint32_t voltage_min_design; + uint32_t voltage_max_design; + uint32_t charge_full_design; + + struct bq2515x_init_data init_data; +}; + +static struct reg_default bq2515x_reg_defs[] = { + {BQ2515X_STAT0, 0xff}, + {BQ2515X_STAT1, 0x0}, + {BQ2515X_STAT2, 0x0}, + {BQ2515X_FLAG0, 0x0}, + {BQ2515X_FLAG1, 0x0}, + {BQ2515X_FLAG2, 0x0}, + {BQ2515X_FLAG3, 0x0}, + {BQ2515X_MASK0, 0x0}, + {BQ2515X_MASK1, 0x0}, + {BQ2515X_MASK2, 0x0}, + {BQ2515X_MASK3, 0x0}, +}; + +static bool bq2515x_is_ps_online(struct bq2515x_device *bq2515x) +{ + return bq2515x->mains_online; +} + +static int bq2515x_wake_up(struct bq2515x_device *bq2515x) +{ + int ret; + int val; + + /* Read the STAT register if we can read it then the device is out + * of ship mode. If the register cannot be read then attempt to wake + * it up and enable the ADC. + */ + ret = regmap_read(bq2515x->regmap, BQ2515X_STAT0, &val); + if (!ret) + return ret; + + /* Need to toggle LP and MR here */ + if (bq2515x->lp_gpio) + gpiod_direction_output(bq2515x->lp_gpio, 1); + + if (bq2515x->reset_gpio) { + gpiod_direction_output(bq2515x->lp_gpio, 0); + mdelay(2000); + gpiod_direction_output(bq2515x->lp_gpio, 1); + } + + return regmap_write(bq2515x->regmap, BQ2515X_ADC_READ_EN, BIT(3)); +} + +static int bq2515x_update_ps_status(struct bq2515x_device *bq2515x) +{ + bool dc = false; + unsigned int val; + int ret; + + if (bq2515x->pg_gpio) + val = gpiod_get_value(bq2515x->pg_gpio); + else { + ret = regmap_read(bq2515x->regmap, BQ2515X_STAT0, &val); + if (ret < 0) + return ret; + } + + dc = val & BQ2515X_VIN_GOOD; + + ret = bq2515x->mains_online != dc; + + bq2515x->mains_online = dc; + + return ret; +} + +static int get_const_charge_current(struct bq2515x_device *bq2515x) +{ + int ret; + int iin_msb; + int iin_lsb; + u16 ichg_measurement; + int ilim_val, ichg_multiplier; + + if (!bq2515x_is_ps_online(bq2515x)) + return -ENODATA; + + ret = regmap_read(bq2515x->regmap, BQ2515X_ADC_IIN_M, &iin_msb); + if (ret < 0) + return ret; + + ret = regmap_read(bq2515x->regmap, BQ2515X_ADC_IIN_L, &iin_lsb); + if (ret < 0) + return ret; + + ichg_measurement = (iin_msb << 8) | iin_lsb; + ret = regmap_read(bq2515x->regmap, BQ2515X_ILIMCTRL, &ilim_val); + if (ret < 0) + return ret; + + if (ilim_val >= BQ2515X_ILIM_150MA) + ichg_multiplier = 350; + else + ichg_multiplier = 750; + + return (ichg_measurement * 100 / BQ2515X_DIVISOR) * ichg_multiplier; +} + +static int get_const_charge_voltage(struct bq2515x_device *bq2515x) +{ + int ret; + int vin_msb; + int vin_lsb; + u16 vbat_measurement; + + if (!bq2515x_is_ps_online(bq2515x)) + bq2515x_wake_up(bq2515x); + + ret = regmap_read(bq2515x->regmap, BQ2515X_ADC_VBAT_M, &vin_msb); + if (ret) + return ret; + + ret = regmap_read(bq2515x->regmap, BQ2515X_ADC_VBAT_L, &vin_lsb); + if (ret) + return ret; + + vbat_measurement = (vin_msb << 8) | vin_lsb; + return ((vbat_measurement * BQ2515X_UV_FACTOR) / BQ2515X_DIVISOR) * 6; +} + +static int bq2515x_charging_status(struct bq2515x_device *bq2515x, + union power_supply_propval *val) +{ + unsigned int status; + int ret; + + if (!bq2515x_is_ps_online(bq2515x)) + return 0; + + ret = regmap_read(bq2515x->regmap, BQ2515X_STAT0, &status); + if (ret) { + val->intval = POWER_SUPPLY_STATUS_UNKNOWN; + return ret; + } + + if (status & BQ2515X_CV_CHRG_MODE && status & BQ2515X_VIN_GOOD) + val->intval = POWER_SUPPLY_STATUS_CHARGING; + else if (status & BQ2515X_CHRG_DONE) + val->intval = POWER_SUPPLY_STATUS_FULL; + else if (status & BQ2515X_VIN_GOOD) + val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; + else + val->intval = POWER_SUPPLY_STATUS_UNKNOWN; + + return ret; +} + +static int bq2515x_get_batt_reg(struct bq2515x_device *bq2515x) +{ + int vbat_reg_code; + int ret; + + ret = regmap_read(bq2515x->regmap, BQ2515X_VBAT_CTRL, &vbat_reg_code); + if (ret) + return ret; + + return BQ2515X_VBAT_BASE_VOLT + vbat_reg_code * BQ2515X_UV_FACTOR; +} + +static int bq2515x_set_batt_reg(struct bq2515x_device *bq2515x, int val) +{ + int vbat_reg_code; + + if (val > BQ2515X_VBAT_REG_MAX || val < BQ2515X_VBAT_REG_MIN) + return -EINVAL; + + vbat_reg_code = (val - BQ2515X_VBAT_BASE_VOLT) / BQ2515X_UV_FACTOR; + + return regmap_write(bq2515x->regmap, BQ2515X_VBAT_CTRL, vbat_reg_code); +} + +static int bq2515x_get_ilim_lvl(struct bq2515x_device *bq2515x) +{ + int ret; + int val; + + ret = regmap_read(bq2515x->regmap, BQ2515X_ILIMCTRL, &val); + if (ret) + return ret; + + return bq2515x_ilim_lvl_values[val & BQ2515X_ILIM_MASK]; +} + +static int bq2515x_set_ilim_lvl(struct bq2515x_device *bq2515x, int val) +{ + int i; + + for (i = 0; i <= ARRAY_SIZE(bq2515x_ilim_lvl_values); i++) { + if (val == bq2515x_ilim_lvl_values[i]) + break; + + if (val > bq2515x_ilim_lvl_values[i - 1] && + val < bq2515x_ilim_lvl_values[i]) { + if (val - bq2515x_ilim_lvl_values[i - 1] < + bq2515x_ilim_lvl_values[i] - val) { + i = i - 1; + break; + } + } + } + + return regmap_write(bq2515x->regmap, BQ2515X_ILIMCTRL, i); +} + +static int bq2515x_power_supply_property_is_writeable(struct power_supply *psy, + enum power_supply_property prop) +{ + switch (prop) { + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + case POWER_SUPPLY_PROP_CHARGE_NOW: + return true; + default: + return false; + } +} + +static int bq2515x_charger_get_health(struct bq2515x_device *bq2515x, + union power_supply_propval *val) +{ + int health; + int ret; + int v; + + if (!bq2515x_is_ps_online(bq2515x)) + bq2515x_wake_up(bq2515x); + + ret = regmap_read(bq2515x->regmap, BQ2515X_FLAG1, &v); + if (ret) + return -EIO; + + if (v & BQ2515X_HEALTH_MASK) { + switch (v & BQ2515X_HEALTH_MASK) { + case BQ2515X_HOT_FLAG: + health = POWER_SUPPLY_HEALTH_HOT; + break; + case BQ2515X_WARM_FLAG: + health = POWER_SUPPLY_HEALTH_WARM; + break; + case BQ2515X_COOL_FLAG: + health = POWER_SUPPLY_HEALTH_COOL; + break; + case BQ2515X_COLD_FLAG: + health = POWER_SUPPLY_HEALTH_COLD; + break; + default: + health = POWER_SUPPLY_HEALTH_UNKNOWN; + } + } else if (v & BQ2515X_OVERVOLT_MASK) { + health = POWER_SUPPLY_HEALTH_OVERVOLTAGE; + } else { + health = POWER_SUPPLY_HEALTH_GOOD; + } + + ret = regmap_read(bq2515x->regmap, BQ2515X_FLAG3, &v); + if (v & BQ2515X_SAFETY_TIMER_EXP) + health = POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE; + + val->intval = health; + + return 0; +} + +static int bq2515x_set_charge_enable(struct bq2515x_device *bq2515x, int val) +{ + if (bq2515x->ce_gpio) + gpiod_set_value(bq2515x->ce_gpio, val); + + return 0; +} + +static int bq2515x_get_charge_enable(struct bq2515x_device *bq2515x) +{ + int charge_value; + + if (bq2515x->ce_gpio) + charge_value = gpiod_get_value(bq2515x->ce_gpio); + else + return -EINVAL; + + return charge_value; +} + +static int bq2515x_mains_set_property(struct power_supply *psy, + enum power_supply_property prop, + const union power_supply_propval *val) +{ + struct bq2515x_device *bq2515x = power_supply_get_drvdata(psy); + int ret; + + switch (prop) { + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + ret = bq2515x_set_ilim_lvl(bq2515x, val->intval); + break; + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + ret = bq2515x_set_batt_reg(bq2515x, val->intval); + break; + case POWER_SUPPLY_PROP_CHARGE_NOW: + ret = bq2515x_set_charge_enable(bq2515x, val->intval); + break; + default: + return -EINVAL; + } + + return ret; +} + +static int bq2515x_mains_get_property(struct power_supply *psy, + enum power_supply_property prop, + union power_supply_propval *val) +{ + struct bq2515x_device *bq2515x = power_supply_get_drvdata(psy); + int ret; + + switch (prop) { + case POWER_SUPPLY_PROP_ONLINE: + val->intval = bq2515x->mains_online; + break; + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: + ret = get_const_charge_current(bq2515x); + if (ret < 0) + return ret; + + val->intval = ret; + break; + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + ret = bq2515x_get_ilim_lvl(bq2515x); + if (ret < 0) + return ret; + + val->intval = ret; + break; + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + ret = bq2515x_get_batt_reg(bq2515x); + if (ret < 0) + return ret; + + val->intval = ret; + break; + case POWER_SUPPLY_PROP_MODEL_NAME: + val->strval = bq2515x->model_name; + ret = 0; + break; + case POWER_SUPPLY_PROP_MANUFACTURER: + val->strval = BQ2515X_MANUFACTURER; + ret = 0; + break; + case POWER_SUPPLY_PROP_VOLTAGE_MAX: + val->intval = BQ2515X_VBAT_REG_MAX; + break; + case POWER_SUPPLY_PROP_VOLTAGE_MIN: + val->intval = BQ2515X_VBAT_REG_MIN; + break; + case POWER_SUPPLY_PROP_CHARGE_NOW: + ret = bq2515x_get_charge_enable(bq2515x); + if (ret < 0) + return ret; + + val->intval = ret; + break; + default: + return -EINVAL; + } + + return 0; +} + +static int bq2515x_battery_get_property(struct power_supply *psy, + enum power_supply_property prop, + union power_supply_propval *val) +{ + struct bq2515x_device *bq2515x = power_supply_get_drvdata(psy); + int ret; + + ret = bq2515x_update_ps_status(bq2515x); + if (ret < 0) + return ret; + + switch (prop) { + case POWER_SUPPLY_PROP_STATUS: + if (!bq2515x_is_ps_online(bq2515x)) { + val->intval = POWER_SUPPLY_STATUS_DISCHARGING; + break; + } + + ret = bq2515x_charging_status(bq2515x, val); + break; + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + ret = get_const_charge_voltage(bq2515x); + if (ret < 0) + return ret; + + val->intval = ret; + break; + case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: + val->intval = bq2515x->voltage_min_design; + break; + case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN: + val->intval = bq2515x->voltage_max_design; + break; + case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: + val->intval = bq2515x->charge_full_design; + break; + case POWER_SUPPLY_PROP_HEALTH: + ret = bq2515x_charger_get_health(bq2515x, val); + if (ret) + val->intval = POWER_SUPPLY_HEALTH_UNKNOWN; + break; + default: + return -EINVAL; + } + + return 0; +} + +static enum power_supply_property bq2515x_battery_properties[] = { + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_HEALTH, + POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, + POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN, + POWER_SUPPLY_PROP_VOLTAGE_NOW, + POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, +}; + +static enum power_supply_property bq2515x_charger_properties[] = { + POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, + POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, + POWER_SUPPLY_PROP_VOLTAGE_MAX, + POWER_SUPPLY_PROP_VOLTAGE_MIN, + POWER_SUPPLY_PROP_CHARGE_NOW, + POWER_SUPPLY_PROP_MODEL_NAME, + POWER_SUPPLY_PROP_MANUFACTURER, +}; + +static struct power_supply_desc bq2515x_mains_desc = { + .name = "bq2515x-mains", + .type = POWER_SUPPLY_TYPE_MAINS, + .get_property = bq2515x_mains_get_property, + .set_property = bq2515x_mains_set_property, + .properties = bq2515x_charger_properties, + .num_properties = ARRAY_SIZE(bq2515x_charger_properties), + .property_is_writeable = bq2515x_power_supply_property_is_writeable, + +}; + +static struct power_supply_desc bq2515x_battery_desc = { + .name = "bq2515x-battery", + .type = POWER_SUPPLY_TYPE_BATTERY, + .get_property = bq2515x_battery_get_property, + .properties = bq2515x_battery_properties, + .num_properties = ARRAY_SIZE(bq2515x_battery_properties), +}; + + +static int bq2515x_power_supply_register(struct bq2515x_device *bq2515x) +{ + struct power_supply_config psy_cfg = { .drv_data = bq2515x, }; + + bq2515x->mains = devm_power_supply_register(bq2515x->dev, + &bq2515x_mains_desc, + &psy_cfg); + if (IS_ERR(bq2515x->mains)) + return -EINVAL; + + bq2515x->battery = devm_power_supply_register(bq2515x->dev, + &bq2515x_battery_desc, + &psy_cfg); + if (IS_ERR(bq2515x->battery)) + return -EINVAL; + + return 0; +} + +static int bq2515x_hw_init(struct bq2515x_device *bq2515x) +{ + int ret = 0; + + if (bq2515x->init_data.ichg) + ret = bq2515x_set_ilim_lvl(bq2515x, bq2515x->init_data.ichg); + + if (ret) + goto err_out; + + if (bq2515x->init_data.vreg) + ret = bq2515x_set_batt_reg(bq2515x, bq2515x->init_data.vreg); + +err_out: + return ret; +} + +static int bq2515x_read_properties(struct bq2515x_device *bq2515x) +{ + int ret; + + ret = device_property_read_u32(bq2515x->dev, + "constant-charge-current-max-microamp", + &bq2515x->init_data.ichg); + if (ret) + bq2515x->init_data.ichg = bq2515x_ilim_lvl_values[1]; + + ret = device_property_read_u32(bq2515x->dev, + "voltage-max-design-microvolt", + &bq2515x->init_data.vreg); + if (ret) + bq2515x->init_data.vreg = 4200000; + + + bq2515x->pg_gpio = devm_gpiod_get_optional(bq2515x->dev, + "pg", GPIOD_IN); + if (IS_ERR(bq2515x->pg_gpio)) + dev_info(bq2515x->dev, "PG GPIO not defined"); + + bq2515x->reset_gpio = devm_gpiod_get_optional(bq2515x->dev, + "reset", GPIOD_OUT_LOW); + + if (PTR_ERR(bq2515x->reset_gpio) == -EPROBE_DEFER) + return -EPROBE_DEFER; + + bq2515x->lp_gpio = devm_gpiod_get_optional(bq2515x->dev, "low-power", + GPIOD_OUT_LOW); + if (PTR_ERR(bq2515x->lp_gpio) == -EPROBE_DEFER) + return -EPROBE_DEFER; + + bq2515x->ce_gpio = devm_gpiod_get_optional(bq2515x->dev, + "charge-enable", + GPIOD_OUT_HIGH); + if (PTR_ERR(bq2515x->ce_gpio) == -EPROBE_DEFER) + return -EPROBE_DEFER; + + return ret; +} + +static const struct regmap_config bq2515x_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = BQ2515X_DEVICE_ID, + .reg_defaults = bq2515x_reg_defs, + .num_reg_defaults = ARRAY_SIZE(bq2515x_reg_defs), + .cache_type = REGCACHE_RBTREE, +}; + +static int bq2515x_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct device *dev = &client->dev; + struct bq2515x_device *bq; + int ret; + + bq = devm_kzalloc(dev, sizeof(*bq), GFP_KERNEL); + if (!bq) + return -ENOMEM; + + bq->client = client; + bq->dev = dev; + + mutex_init(&bq->lock); + + bq->regmap = devm_regmap_init_i2c(client, &bq2515x_regmap_config); + if (IS_ERR(bq->regmap)) { + dev_err(dev, "failed to allocate register map\n"); + return PTR_ERR(bq->regmap); + } + + strncpy(bq->model_name, id->name, I2C_NAME_SIZE); + + i2c_set_clientdata(client, bq); + + ret = bq2515x_read_properties(bq); + if (ret < 0) { + dev_err(dev, "Failed to register power supply %d\n", ret); + return ret; + } + + ret = bq2515x_hw_init(bq); + if (ret < 0) { + dev_err(dev, "Cannot initialize the chip.\n"); + return ret; + } + + return bq2515x_power_supply_register(bq); +} + +static const struct i2c_device_id bq2515x_i2c_ids[] = { + { "bq25150", 0 }, + { "bq25155", 1 }, + {}, +}; +MODULE_DEVICE_TABLE(i2c, bq2515x_i2c_ids); + +static const struct of_device_id bq2515x_of_match[] = { + { .compatible = "ti,bq25150", }, + { .compatible = "ti,bq25155", }, + { }, +}; +MODULE_DEVICE_TABLE(of, bq2515x_of_match); + +static struct i2c_driver bq2515x_driver = { + .driver = { + .name = "bq2515x-charger", + .of_match_table = bq2515x_of_match, + }, + .probe = bq2515x_probe, + .id_table = bq2515x_i2c_ids, +}; +module_i2c_driver(bq2515x_driver); + +MODULE_AUTHOR("Dan Murphy "); +MODULE_DESCRIPTION("BQ2515X charger driver"); +MODULE_LICENSE("GPL v2");