From patchwork Wed Sep 14 16:30:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: cy_huang X-Patchwork-Id: 606745 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 96E0BECAAD3 for ; Wed, 14 Sep 2022 16:32:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230141AbiINQcC (ORCPT ); Wed, 14 Sep 2022 12:32:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42464 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230137AbiINQbc (ORCPT ); Wed, 14 Sep 2022 12:31:32 -0400 Received: from mail-pj1-x102d.google.com (mail-pj1-x102d.google.com [IPv6:2607:f8b0:4864:20::102d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B746A65674; Wed, 14 Sep 2022 09:30:26 -0700 (PDT) Received: by mail-pj1-x102d.google.com with SMTP id s14-20020a17090a6e4e00b0020057c70943so19597927pjm.1; Wed, 14 Sep 2022 09:30:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=references:in-reply-to:message-id:date:subject:cc:to:from:from:to :cc:subject:date; bh=WdPMA2pH0mS9gX0lH3J9f/5y/00ONBhVpJZxWxuBUaU=; b=NjxUwk0G3MFYreEdPOVK7c0KYfAdv8/fFap3Godlw4xloSUyodqKXyjqfogqvBWtwV uM+WW38NpZpChmDP4VdXOxmAL4LJrIfbvKLvMWtMEaAcMCaN+tEcAy2Ao5h3Tj9i1Twx HAYvbLhcn8YTR4KKNTD14FBWYaRrhXbHikxUP0LL+inkHrh3JXggGnCI3NvaeJCxifx2 iyd/RTI4gHCsfGSKcAp7AuRL45ukyF71hltZL3wPjwKM6eAlaEy5zZ1UrwqnwK5v0wz6 XoxMqMxEmEGFCMxYM2njXzbYqMU5gWnCzimzr7qEuBG5nUyc4WNeu/WkEbjIttiV5DRD o5Kg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=references:in-reply-to:message-id:date:subject:cc:to:from :x-gm-message-state:from:to:cc:subject:date; bh=WdPMA2pH0mS9gX0lH3J9f/5y/00ONBhVpJZxWxuBUaU=; b=GRBXDH/Sl3p/M7Jv/jp7g1VdM++WI+JFmkSkJerupCh+aKsuuuw4Wanz9b1JFMDtma je7P7bXCjnwKuOVnR8TDVmTbmjKRr5CTxsRsoeVf86pu7sPQM5g6KRm0ba2AhKHtrFcp LHrPs/88sJu/U5Vt/rXteGMJdes9Zj5zu0eRWgSXBL09QH/KIXHpkJA5sNb72NrwuvQ6 4V5Z5t1uGOIHJCS43WsY3Az/f4aAdcMN8c+ViK5yz1ddTb3/q1VxQ5lARwKr569Tf/xa hi398Vc3BMLDM9Wnv4sFKLbjBdMSeRJ/UVMM02Y3+1ssUi5dqWq24OxCbI2lHZlJRLGQ Yq7w== X-Gm-Message-State: ACgBeo12d9GzcLh5+EqPCBB5QogRk/aD3KeqhcVZCv9VintucGcXUCsk MGXUDNy6NCvYLHEE3bwmywc= X-Google-Smtp-Source: AA6agR7YABGhbP2rPjKqyCzHG7vi4XliI2iZnkCKvhfScqrJLqF8JKDJVcu7YZIwAHBllw92zLr/WA== X-Received: by 2002:a17:903:244a:b0:177:f32b:19ff with SMTP id l10-20020a170903244a00b00177f32b19ffmr32361712pls.103.1663173025540; Wed, 14 Sep 2022 09:30:25 -0700 (PDT) Received: from localhost.localdomain (1-171-4-145.dynamic-ip.hinet.net. [1.171.4.145]) by smtp.gmail.com with ESMTPSA id l22-20020a17090af8d600b002031264a864sm1899991pjd.41.2022.09.14.09.30.23 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 14 Sep 2022 09:30:25 -0700 (PDT) From: cy_huang To: robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, sre@kernel.org Cc: mazziesaccount@gmail.com, alina_yu@richtek.com, cy_huang@richtek.com, alinayu829@gmail.com, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 1/3] dt-bindings: power: supply: Add Richtek RT9471 battery charger Date: Thu, 15 Sep 2022 00:30:13 +0800 Message-Id: <1663173015-7934-2-git-send-email-u0084500@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1663173015-7934-1-git-send-email-u0084500@gmail.com> References: <1663173015-7934-1-git-send-email-u0084500@gmail.com> Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: ChiYuan Huang Add bindings for the Richtek RT9471 I2C controlled battery charger. Reviewed-by: Krzysztof Kozlowski Co-developed-by: Alina Yu Signed-off-by: Alina Yu Signed-off-by: ChiYuan Huang --- Since v3 - Move unevaluatedProperties line after $ref for binding patch. - Add Reviewed-by tag for binding patch. Since v2 - Remove the properties for interrupt controller things in the binding documentation. - Fix dtc error for typo, it's 'regulator-name', not 'regulator-compatible'. - Add regulator min/max microamp to allow otg vbus current adjustable in example. - Specify the active-level for charge-enable-gpios in binding example. --- .../bindings/power/supply/richtek,rt9471.yaml | 73 ++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/supply/richtek,rt9471.yaml diff --git a/Documentation/devicetree/bindings/power/supply/richtek,rt9471.yaml b/Documentation/devicetree/bindings/power/supply/richtek,rt9471.yaml new file mode 100644 index 00000000..fbb54cf --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/richtek,rt9471.yaml @@ -0,0 +1,73 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/power/supply/richtek,rt9471.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Richtek RT9471 3A Single Cell Switching Battery charger + +maintainers: + - Alina Yu + - ChiYuan Huang + +description: | + RT9471 is a switch-mode single cell Li-Ion/Li-Polymer battery charger for + portable applications. It supports USB BC1.2 port detection, current and + voltage regulations in both charging and boost mode. + + Datasheet is available at + https://www.richtek.com/assets/product_file/RT9471=RT9471D/DS9471D-02.pdf + +properties: + compatible: + const: richtek,rt9471 + + reg: + maxItems: 1 + + charge-enable-gpios: + description: GPIO used to turn on and off charging. + maxItems: 1 + + wakeup-source: true + + interrupts: + maxItems: 1 + + usb-otg-vbus-regulator: + type: object + $ref: /schemas/regulator/regulator.yaml# + unevaluatedProperties: false + +required: + - compatible + - reg + - wakeup-source + - interrupts + +additionalProperties: false + +examples: + - | + #include + #include + i2c { + #address-cells = <1>; + #size-cells = <0>; + + charger@53 { + compatible = "richtek,rt9471"; + reg = <0x53>; + charge-enable-gpios = <&gpio26 1 GPIO_ACTIVE_LOW>; + wakeup-source; + interrupts-extended = <&gpio_intc 32 IRQ_TYPE_EDGE_FALLING>; + + usb-otg-vbus-regulator { + regulator-name = "usb-otg-vbus"; + regulator-min-microvolt = <4850000>; + regulator-max-microvolt = <5300000>; + regulator-min-microamp = <500000>; + regulator-max-microamp = <1200000>; + }; + }; + }; From patchwork Wed Sep 14 16:30:14 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: cy_huang X-Patchwork-Id: 605929 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D9CEDC6FA89 for ; Wed, 14 Sep 2022 16:32:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230096AbiINQcE (ORCPT ); Wed, 14 Sep 2022 12:32:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42476 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230119AbiINQbg (ORCPT ); Wed, 14 Sep 2022 12:31:36 -0400 Received: from mail-pj1-x1036.google.com (mail-pj1-x1036.google.com [IPv6:2607:f8b0:4864:20::1036]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 265A75A163; Wed, 14 Sep 2022 09:30:29 -0700 (PDT) Received: by mail-pj1-x1036.google.com with SMTP id m10-20020a17090a730a00b001fa986fd8eeso19621681pjk.0; Wed, 14 Sep 2022 09:30:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=references:in-reply-to:message-id:date:subject:cc:to:from:from:to :cc:subject:date; bh=8RstTNk0YwGm6WwgCYa9Jf2mq9RcUxFr7ZZEt4KuWcw=; b=dYa/MyYmSErb82Jyy4eJMd1fRHUawRMGChbotpN87NcACKT4hfpONUt2e5ZA13r6xI E57drG+J53mrhkZAeI4UULw3j/+4oLjVpdSdo310ad76up1rnVSs0OlmNj7NSmXvDiCG UraDy3TeCssniPMsychWRjNzgii7TIbUO5lJtVyMbmvHwuPWvLq3/2I/ME9jR+Xqtpwf rSA2LpsgM0FhMEtC27CQgm5k3I5arqzDRplbWQ1Q7SP77rdIZsUz3Ely9qjqeNtbSLzj P/d+EU5ZtL3NqFqtDfVF/32AH8JzWdcf8nJ/TVCwo1EMmu/1Go6iKTx9iDqKcbuhAL6b /0vA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=references:in-reply-to:message-id:date:subject:cc:to:from :x-gm-message-state:from:to:cc:subject:date; bh=8RstTNk0YwGm6WwgCYa9Jf2mq9RcUxFr7ZZEt4KuWcw=; b=SVg2g8pMkD4sgfjMxa2RMi65bwwABlgx95g5C3yG5+bo0d8HSRIZ5D2tNSeV8bhT1j Sc5D3Tce2rpkBjEwoLp9CwyH3ohlPxwpqLkES9BlH6Uh1ySTKr0gAvozq1AAnr75wtPj YjH55BF/GmhdKorLDp6FGSQIBRAAlOsLiLCncajwbygmX5PRBlQgeV0onAGtYxIoX2tT WRd5zqFws9vffFR0B0cYl1lIdPNRchvekPYJk6NLcN+aH/aWIDeiWWUKACbP2sq5qqc9 7SY/wG14F0aRZeVZZZKuiwRJrSVE8U6YYdmMzrU9Dhx5sPszw5ZGA3yWiHApC9PYv1Ht y5VA== X-Gm-Message-State: ACgBeo3C2Xo3FsXORBpND0pUozRJrWZOdVFOUTQ4I89RWzgSz1NmVKVU zaacL0ZO2LK9PRRxfnRjnnU= X-Google-Smtp-Source: AA6agR4vFMQOZKeQbny2BJiLCXn4UkPjivb0qT/xytz624/ndoeax9il9xHS1kaJu7eD19tORrkuXw== X-Received: by 2002:a17:902:bd48:b0:172:bb9d:d6d5 with SMTP id b8-20020a170902bd4800b00172bb9dd6d5mr36488260plx.59.1663173028246; Wed, 14 Sep 2022 09:30:28 -0700 (PDT) Received: from localhost.localdomain (1-171-4-145.dynamic-ip.hinet.net. [1.171.4.145]) by smtp.gmail.com with ESMTPSA id l22-20020a17090af8d600b002031264a864sm1899991pjd.41.2022.09.14.09.30.25 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 14 Sep 2022 09:30:27 -0700 (PDT) From: cy_huang To: robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, sre@kernel.org Cc: mazziesaccount@gmail.com, alina_yu@richtek.com, cy_huang@richtek.com, alinayu829@gmail.com, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 2/3] power: supply: rt9471: Add Richtek RT9471 charger driver Date: Thu, 15 Sep 2022 00:30:14 +0800 Message-Id: <1663173015-7934-3-git-send-email-u0084500@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1663173015-7934-1-git-send-email-u0084500@gmail.com> References: <1663173015-7934-1-git-send-email-u0084500@gmail.com> Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: ChiYuan Huang Add support for the RT9471 3A 1-Cell Li+ battery charger. The RT9471 is a highly-integrated 3A switch mode battery charger with low impedance power path to better optimize the charging efficiency. Co-developed-by: Alina Yu Signed-off-by: Alina Yu Signed-off-by: ChiYuan Huang --- Since v5: - Remove one line wrapper. - Merge header content into source file, remove header file. - Remove 'charge_term_enable' sysfs entry and merge it into 'charge_term_current' property control. - Change MODULE_LICENSE from 'GPL v2' to 'GPL'. Following by the below discussion https://lore.kernel.org/all/YxAVAt2eWB3NFlrk@google.com/ Since v4: - Remove the line for the owner field in driver. Since v2: - Fix checkpatch error about 'foo * bar' to 'foo *bar' in psy_device_to_chip function. - Specify the member name directly for the use of linear range. --- drivers/power/supply/Kconfig | 16 + drivers/power/supply/Makefile | 1 + drivers/power/supply/rt9471.c | 937 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 954 insertions(+) create mode 100644 drivers/power/supply/rt9471.c diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig index 1aa8323..e9b61c2 100644 --- a/drivers/power/supply/Kconfig +++ b/drivers/power/supply/Kconfig @@ -772,6 +772,22 @@ config CHARGER_RT9455 help Say Y to enable support for Richtek RT9455 battery charger. +config CHARGER_RT9471 + tristate "Richtek RT9471 battery charger driver" + depends on I2C && GPIOLIB && REGULATOR + select REGMAP_I2C + select REGMAP_IRQ + select LINEAR_RANGES + help + This adds support for Richtek RT9471 battery charger. RT9471 is + highly-integrated switch mode battery charger which is system power + patch manageable device for single cell Li-Ion and Li-polymer battery. + It can support BC12 detection on DPDM, and current and voltage + regulation on both charging and boost mode. + + This driver can also be built as a module. If so, the module will be + called rt9471. + config CHARGER_CROS_USBPD tristate "ChromeOS EC based USBPD charger" depends on CROS_USBPD_NOTIFY diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile index 7f02f36..17c8c1a 100644 --- a/drivers/power/supply/Makefile +++ b/drivers/power/supply/Makefile @@ -57,6 +57,7 @@ obj-$(CONFIG_BATTERY_MAX1721X) += max1721x_battery.o obj-$(CONFIG_BATTERY_Z2) += z2_battery.o obj-$(CONFIG_BATTERY_RT5033) += rt5033_battery.o obj-$(CONFIG_CHARGER_RT9455) += rt9455_charger.o +obj-$(CONFIG_CHARGER_RT9471) += rt9471.o obj-$(CONFIG_BATTERY_S3C_ADC) += s3c_adc_battery.o obj-$(CONFIG_BATTERY_TWL4030_MADC) += twl4030_madc_battery.o obj-$(CONFIG_CHARGER_88PM860X) += 88pm860x_charger.o diff --git a/drivers/power/supply/rt9471.c b/drivers/power/supply/rt9471.c new file mode 100644 index 00000000..e5560a3 --- /dev/null +++ b/drivers/power/supply/rt9471.c @@ -0,0 +1,937 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2022 Richtek Technology Corp. + * + * Authors: Alina Yu + * ChiYuan Huang + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define RT9471_REG_OTGCFG 0x00 +#define RT9471_REG_TOP 0x01 +#define RT9471_REG_FUNC 0x02 +#define RT9471_REG_IBUS 0x03 +#define RT9471_REG_VBUS 0x04 +#define RT9471_REG_PRECHG 0x05 +#define RT9471_REG_VCHG 0x07 +#define RT9471_REG_ICHG 0x08 +#define RT9471_REG_CHGTMR 0x09 +#define RT9471_REG_EOC 0x0A +#define RT9471_REG_INFO 0x0B +#define RT9471_REG_JEITA 0x0C +#define RT9471_REG_PUMP_EXP 0x0D +#define RT9471_REG_DPDMDET 0x0E +#define RT9471_REG_ICSTAT 0x0F +#define RT9471_REG_STAT0 0x10 +#define RT9471_REG_STAT1 0x11 +#define RT9471_REG_STAT2 0x12 +#define RT9471_REG_IRQ0 0x20 +#define RT9471_REG_MASK0 0x30 + +#define RT9471_OTGCV_MASK GENMASK(7, 6) +#define RT9471_OTGCC_MASK BIT(0) +#define RT9471_OTGEN_MASK BIT(1) +#define RT9471_CHGFAULT_MASK GENMASK(4, 1) + +#define RT9471_NUM_IRQ_REGS 4 +#define RT9471_OTGCV_MINUV 4850000 +#define RT9471_OTGCV_STEPUV 150000 +#define RT9471_NUM_VOTG 4 +#define RT9471_VCHG_MAXUV 4700000 +#define RT9471_ICHG_MAXUA 3150000 + +/* Device ID */ +#define RT9470_DEVID 0x09 +#define RT9470D_DEVID 0x0A +#define RT9471_DEVID 0x0D +#define RT9471D_DEVID 0x0E + +/* IRQ number */ +#define RT9471_IRQ_BC12_DONE 0 +#define RT9471_IRQ_DETACH 1 +#define RT9471_IRQ_RECHG 2 +#define RT9471_IRQ_CHG_DONE 3 +#define RT9471_IRQ_BG_CHG 4 +#define RT9471_IRQ_IE0C 5 +#define RT9471_IRQ_CHG_RDY 6 +#define RT9471_IRQ_VBUS_GD 7 +#define RT9471_IRQ_CHG_BATOV 9 +#define RT9471_IRQ_CHG_SYSOV 10 +#define RT9471_IRQ_CHG_TOUT 11 +#define RT9471_IRQ_CHG_BUSUV 12 +#define RT9471_IRQ_CHG_THREG 13 +#define RT9471_IRQ_CHG_AICR 14 +#define RT9471_IRQ_CHG_MIVR 15 +#define RT9471_IRQ_SYS_SHORT 16 +#define RT9471_IRQ_SYS_MIN 17 +#define RT9471_IRQ_AICC_DONE 18 +#define RT9471_IRQ_PE_DONE 19 +#define RT9471_IRQ_JEITA_COLD 20 +#define RT9471_IRQ_JEITA_COOL 21 +#define RT9471_IRQ_JEITA_WARM 22 +#define RT9471_IRQ_JEITA_HOT 23 +#define RT9471_IRQ_OTG_FAULT 24 +#define RT9471_IRQ_OTG_LBP 25 +#define RT9471_IRQ_OTG_CC 26 +#define RT9471_IRQ_WDT 29 +#define RT9471_IRQ_VAC_OV 30 +#define RT9471_IRQ_OTP 31 + +enum rt9471_fields { + F_WDT = 0, + F_WDT_RST, + F_CHG_EN, + F_HZ, + F_BATFET_DIS, + F_AICR, + F_AICC_EN, + F_MIVR, + F_IPRE_CHG, + F_VPRE_CHG, + F_VBAT_REG, + F_ICHG_REG, + F_EOC_RST, + F_TE, + F_IEOC_CHG, + F_DEVICE_ID, + F_REG_RST, + F_BC12_EN, + F_IC_STAT, + F_PORT_STAT, + F_ST_CHG_DONE, + F_ST_CHG_RDY, + F_ST_VBUS_GD, + F_MAX_FIELDS +}; + +enum rt9471_ranges { + RT9471_RANGE_AICR = 0, + RT9471_RANGE_MIVR, + RT9471_RANGE_IPRE, + RT9471_RANGE_VCHG, + RT9471_RANGE_ICHG, + RT9471_RANGE_IEOC, + RT9471_MAX_RANGES +}; + +enum { + RT9471_PORTSTAT_APPLE_10W = 8, + RT9471_PORTSTAT_SAMSUNG_10W, + RT9471_PORTSTAT_APPLE_5W, + RT9471_PORTSTAT_APPLE_12W, + RT9471_PORTSTAT_NSTD, + RT9471_PORTSTAT_SDP, + RT9471_PORTSTAT_CDP, + RT9471_PORTSTAT_DCP, +}; + +struct rt9471_chip { + struct device *dev; + struct gpio_desc *ce_gpio; + struct regmap *regmap; + struct regmap_field *rm_fields[F_MAX_FIELDS]; + struct regmap_irq_chip_data *irq_chip_data; + struct regulator_dev *otg_rdev; + struct power_supply *psy; + struct power_supply_desc psy_desc; + struct mutex var_lock; + enum power_supply_usb_type psy_usb_type; + int psy_usb_curr; +}; + +static const struct reg_field rt9471_reg_fields[F_MAX_FIELDS] = { + [F_WDT] = REG_FIELD(RT9471_REG_TOP, 0, 0), + [F_WDT_RST] = REG_FIELD(RT9471_REG_TOP, 1, 1), + [F_CHG_EN] = REG_FIELD(RT9471_REG_FUNC, 0, 0), + [F_HZ] = REG_FIELD(RT9471_REG_FUNC, 5, 5), + [F_BATFET_DIS] = REG_FIELD(RT9471_REG_FUNC, 7, 7), + [F_AICR] = REG_FIELD(RT9471_REG_IBUS, 0, 5), + [F_AICC_EN] = REG_FIELD(RT9471_REG_IBUS, 7, 7), + [F_MIVR] = REG_FIELD(RT9471_REG_VBUS, 0, 3), + [F_IPRE_CHG] = REG_FIELD(RT9471_REG_PRECHG, 0, 3), + [F_VPRE_CHG] = REG_FIELD(RT9471_REG_PRECHG, 4, 6), + [F_VBAT_REG] = REG_FIELD(RT9471_REG_VCHG, 0, 6), + [F_ICHG_REG] = REG_FIELD(RT9471_REG_ICHG, 0, 5), + [F_EOC_RST] = REG_FIELD(RT9471_REG_EOC, 0, 0), + [F_TE] = REG_FIELD(RT9471_REG_EOC, 1, 1), + [F_IEOC_CHG] = REG_FIELD(RT9471_REG_EOC, 4, 7), + [F_DEVICE_ID] = REG_FIELD(RT9471_REG_INFO, 3, 6), + [F_REG_RST] = REG_FIELD(RT9471_REG_INFO, 7, 7), + [F_BC12_EN] = REG_FIELD(RT9471_REG_DPDMDET, 7, 7), + [F_IC_STAT] = REG_FIELD(RT9471_REG_ICSTAT, 0, 3), + [F_PORT_STAT] = REG_FIELD(RT9471_REG_ICSTAT, 4, 7), + [F_ST_CHG_DONE] = REG_FIELD(RT9471_REG_STAT0, 3, 3), + [F_ST_CHG_RDY] = REG_FIELD(RT9471_REG_STAT0, 6, 6), + [F_ST_VBUS_GD] = REG_FIELD(RT9471_REG_STAT0, 7, 7), +}; + +static const struct linear_range rt9471_chg_ranges[RT9471_MAX_RANGES] = { + [RT9471_RANGE_AICR] = { .min = 50000, .min_sel = 1, .max_sel = 63, .step = 50000 }, + [RT9471_RANGE_MIVR] = { .min = 3900000, .min_sel = 0, .max_sel = 15, .step = 100000 }, + [RT9471_RANGE_IPRE] = { .min = 50000, .min_sel = 0, .max_sel = 15, .step = 50000 }, + [RT9471_RANGE_VCHG] = { .min = 3900000, .min_sel = 0, .max_sel = 80, .step = 10000 }, + [RT9471_RANGE_ICHG] = { .min = 0, .min_sel = 0, .max_sel = 63, .step = 50000 }, + [RT9471_RANGE_IEOC] = { .min = 50000, .min_sel = 0, .max_sel = 15, .step = 50000 }, +}; + +static int rt9471_set_value_by_field_range(struct rt9471_chip *chip, + enum rt9471_fields field, + enum rt9471_ranges range, int val) +{ + unsigned int sel; + + if (val < 0) + return -EINVAL; + + linear_range_get_selector_within(rt9471_chg_ranges + range, val, &sel); + + return regmap_field_write(chip->rm_fields[field], sel); +} + + +static int rt9471_get_value_by_field_range(struct rt9471_chip *chip, + enum rt9471_fields field, + enum rt9471_ranges range, int *val) +{ + unsigned int sel, rvalue; + int ret; + + ret = regmap_field_read(chip->rm_fields[field], &sel); + if (ret) + return ret; + + ret = linear_range_get_value(rt9471_chg_ranges + range, sel, &rvalue); + if (ret) + return ret; + + *val = rvalue; + return 0; +} + +static int rt9471_set_ieoc(struct rt9471_chip *chip, int microamp) +{ + int ret; + + if (microamp == 0) + return regmap_field_write(chip->rm_fields[F_TE], 0); + + ret = rt9471_set_value_by_field_range(chip, F_IEOC_CHG, RT9471_RANGE_IEOC, microamp); + if (ret) + return ret; + + /* After applying the new IEOC value, enable charge termination */ + return regmap_field_write(chip->rm_fields[F_TE], 1); +} + +static int rt9471_get_ieoc(struct rt9471_chip *chip, int *microamp) +{ + unsigned int chg_term_enable; + int ret; + + ret = regmap_field_read(chip->rm_fields[F_TE], &chg_term_enable); + if (ret) + return ret; + + if (!chg_term_enable) { + *microamp = 0; + return 0; + } + + return rt9471_get_value_by_field_range(chip, F_IEOC_CHG, RT9471_RANGE_IEOC, microamp); +} + +static int rt9471_get_status(struct rt9471_chip *chip, int *status) +{ + unsigned int chg_ready, chg_done, fault_stat; + int ret; + + ret = regmap_field_read(chip->rm_fields[F_ST_CHG_RDY], &chg_ready); + if (ret) + return ret; + + ret = regmap_field_read(chip->rm_fields[F_ST_CHG_DONE], &chg_done); + if (ret) + return ret; + + ret = regmap_read(chip->regmap, RT9471_REG_STAT1, &fault_stat); + if (ret) + return ret; + + fault_stat &= RT9471_CHGFAULT_MASK; + + if (chg_ready && chg_done) + *status = POWER_SUPPLY_STATUS_FULL; + else if (chg_ready && fault_stat) + *status = POWER_SUPPLY_STATUS_NOT_CHARGING; + else if (chg_ready && !fault_stat) + *status = POWER_SUPPLY_STATUS_CHARGING; + else + *status = POWER_SUPPLY_STATUS_DISCHARGING; + + return 0; +} + +static int rt9471_get_vbus_good(struct rt9471_chip *chip, int *stat) +{ + unsigned int vbus_gd; + int ret; + + ret = regmap_field_read(chip->rm_fields[F_ST_VBUS_GD], &vbus_gd); + if (ret) + return ret; + + *stat = vbus_gd; + return 0; +} + +static int rt9471_get_usb_type(struct rt9471_chip *chip, int *usb_type) +{ + mutex_lock(&chip->var_lock); + *usb_type = chip->psy_usb_type; + mutex_unlock(&chip->var_lock); + + return 0; +} + +static int rt9471_get_usb_type_current(struct rt9471_chip *chip, + int *microamp) +{ + mutex_lock(&chip->var_lock); + *microamp = chip->psy_usb_curr; + mutex_unlock(&chip->var_lock); + + return 0; +} + +static enum power_supply_property rt9471_charger_properties[] = { + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_CURRENT_MAX, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX, + POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, + POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT, + POWER_SUPPLY_PROP_USB_TYPE, + POWER_SUPPLY_PROP_PRECHARGE_CURRENT, + POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT, + POWER_SUPPLY_PROP_MODEL_NAME, + POWER_SUPPLY_PROP_MANUFACTURER, +}; + +static enum power_supply_usb_type rt9471_charger_usb_types[] = { + POWER_SUPPLY_USB_TYPE_UNKNOWN, + POWER_SUPPLY_USB_TYPE_SDP, + POWER_SUPPLY_USB_TYPE_DCP, + POWER_SUPPLY_USB_TYPE_CDP, + POWER_SUPPLY_USB_TYPE_APPLE_BRICK_ID, +}; + +static int rt9471_charger_property_is_writeable(struct power_supply *psy, + enum power_supply_property psp) +{ + switch (psp) { + case POWER_SUPPLY_PROP_STATUS: + case POWER_SUPPLY_PROP_ONLINE: + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT: + case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: + return 1; + default: + return 0; + } +} + +static int rt9471_charger_set_property(struct power_supply *psy, + enum power_supply_property psp, + const union power_supply_propval *val) +{ + struct rt9471_chip *chip = power_supply_get_drvdata(psy); + int value = val->intval; + + switch (psp) { + case POWER_SUPPLY_PROP_STATUS: + return regmap_field_write(chip->rm_fields[F_CHG_EN], !!value); + case POWER_SUPPLY_PROP_ONLINE: + return regmap_field_write(chip->rm_fields[F_HZ], !value); + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: + return rt9471_set_value_by_field_range(chip, F_ICHG_REG, RT9471_RANGE_ICHG, value); + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + return rt9471_set_value_by_field_range(chip, F_VBAT_REG, RT9471_RANGE_VCHG, value); + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + return rt9471_set_value_by_field_range(chip, F_AICR, RT9471_RANGE_AICR, value); + case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT: + return rt9471_set_value_by_field_range(chip, F_MIVR, RT9471_RANGE_MIVR, value); + case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: + return rt9471_set_value_by_field_range(chip, F_IPRE_CHG, RT9471_RANGE_IPRE, value); + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: + return rt9471_set_ieoc(chip, val->intval); + default: + return -EINVAL; + } +} + +static const char * const rt9471_manufacturer = "Richtek Technology Corp."; +static const char * const rt9471_model = "RT9471"; + +static int rt9471_charger_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct rt9471_chip *chip = power_supply_get_drvdata(psy); + int *pvalue = &val->intval; + + switch (psp) { + case POWER_SUPPLY_PROP_STATUS: + return rt9471_get_status(chip, pvalue); + case POWER_SUPPLY_PROP_ONLINE: + return rt9471_get_vbus_good(chip, pvalue); + case POWER_SUPPLY_PROP_CURRENT_MAX: + return rt9471_get_usb_type_current(chip, pvalue); + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: + return rt9471_get_value_by_field_range(chip, F_ICHG_REG, RT9471_RANGE_ICHG, pvalue); + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: + *pvalue = RT9471_ICHG_MAXUA; + return 0; + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + return rt9471_get_value_by_field_range(chip, F_VBAT_REG, RT9471_RANGE_VCHG, pvalue); + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: + val->intval = RT9471_VCHG_MAXUV; + return 0; + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + return rt9471_get_value_by_field_range(chip, F_AICR, RT9471_RANGE_AICR, pvalue); + case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT: + return rt9471_get_value_by_field_range(chip, F_MIVR, RT9471_RANGE_MIVR, pvalue); + case POWER_SUPPLY_PROP_USB_TYPE: + return rt9471_get_usb_type(chip, pvalue); + case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: + return rt9471_get_value_by_field_range(chip, F_IPRE_CHG, RT9471_RANGE_IPRE, pvalue); + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: + return rt9471_get_ieoc(chip, pvalue); + case POWER_SUPPLY_PROP_MODEL_NAME: + val->strval = rt9471_model; + return 0; + case POWER_SUPPLY_PROP_MANUFACTURER: + val->strval = rt9471_manufacturer; + return 0; + default: + return -ENODATA; + } +} + +static irqreturn_t rt9471_vbus_gd_handler(int irqno, void *devid) +{ + struct rt9471_chip *chip = devid; + + power_supply_changed(chip->psy); + + return IRQ_HANDLED; +} + +static irqreturn_t rt9471_detach_handler(int irqno, void *devid) +{ + struct rt9471_chip *chip = devid; + unsigned int vbus_gd; + int ret; + + ret = regmap_field_read(chip->rm_fields[F_ST_VBUS_GD], &vbus_gd); + if (ret) + return IRQ_NONE; + + /* Only focus on really detached */ + if (vbus_gd) + return IRQ_HANDLED; + + mutex_lock(&chip->var_lock); + chip->psy_usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN; + chip->psy_usb_curr = 0; + mutex_unlock(&chip->var_lock); + + power_supply_changed(chip->psy); + + return IRQ_HANDLED; +} + +static irqreturn_t rt9471_bc12_done_handler(int irqno, void *devid) +{ + struct rt9471_chip *chip = devid; + enum power_supply_usb_type usb_type; + unsigned int port_stat; + int usb_curr, ret; + + ret = regmap_field_read(chip->rm_fields[F_PORT_STAT], &port_stat); + if (ret) + return IRQ_NONE; + + switch (port_stat) { + case RT9471_PORTSTAT_APPLE_10W: + usb_type = POWER_SUPPLY_USB_TYPE_APPLE_BRICK_ID; + usb_curr = 2000000; + break; + case RT9471_PORTSTAT_APPLE_5W: + usb_type = POWER_SUPPLY_USB_TYPE_APPLE_BRICK_ID; + usb_curr = 1000000; + break; + case RT9471_PORTSTAT_APPLE_12W: + usb_type = POWER_SUPPLY_USB_TYPE_APPLE_BRICK_ID; + usb_curr = 2400000; + break; + case RT9471_PORTSTAT_SAMSUNG_10W: + usb_type = POWER_SUPPLY_USB_TYPE_DCP; + usb_curr = 2000000; + break; + case RT9471_PORTSTAT_DCP: + usb_type = POWER_SUPPLY_USB_TYPE_DCP; + usb_curr = 1500000; + break; + case RT9471_PORTSTAT_NSTD: + case RT9471_PORTSTAT_SDP: + usb_type = POWER_SUPPLY_USB_TYPE_SDP; + usb_curr = 500000; + break; + case RT9471_PORTSTAT_CDP: + usb_type = POWER_SUPPLY_USB_TYPE_CDP; + usb_curr = 1500000; + break; + default: + usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN; + usb_curr = 0; + break; + } + + mutex_lock(&chip->var_lock); + chip->psy_usb_type = usb_type; + chip->psy_usb_curr = usb_curr; + mutex_unlock(&chip->var_lock); + + power_supply_changed(chip->psy); + + return IRQ_HANDLED; +} + +static irqreturn_t rt9471_wdt_handler(int irqno, void *devid) +{ + struct rt9471_chip *chip = devid; + int ret; + + ret = regmap_field_write(chip->rm_fields[F_WDT_RST], 1); + + return ret ? IRQ_NONE : IRQ_HANDLED; +} + +static irqreturn_t rt9471_otg_fault_handler(int irqno, void *devid) +{ + struct rt9471_chip *chip = devid; + + regulator_notifier_call_chain(chip->otg_rdev, REGULATOR_EVENT_FAIL, NULL); + + return IRQ_HANDLED; +} + +#define RT9471_IRQ_DESC(_name, _hwirq) \ +{ \ + .name = #_name, \ + .hwirq = _hwirq, \ + .handler = rt9471_##_name##_handler, \ +} + +static int rt9471_register_interrupts(struct rt9471_chip *chip) +{ + struct device *dev = chip->dev; + static const struct { + char *name; + int hwirq; + irq_handler_t handler; + } chg_irqs[] = { + RT9471_IRQ_DESC(vbus_gd, RT9471_IRQ_VBUS_GD), + RT9471_IRQ_DESC(detach, RT9471_IRQ_DETACH), + RT9471_IRQ_DESC(bc12_done, RT9471_IRQ_BC12_DONE), + RT9471_IRQ_DESC(wdt, RT9471_IRQ_WDT), + RT9471_IRQ_DESC(otg_fault, RT9471_IRQ_OTG_FAULT), + }, *curr; + int i, virq, ret; + + for (i = 0; i < ARRAY_SIZE(chg_irqs); i++) { + curr = chg_irqs + i; + + virq = regmap_irq_get_virq(chip->irq_chip_data, curr->hwirq); + if (virq <= 0) + return virq; + + ret = devm_request_threaded_irq(dev, virq, NULL, curr->handler, + IRQF_ONESHOT, curr->name, chip); + if (ret) + return dev_err_probe(dev, ret, "Failed to register IRQ (%s)\n", + curr->name); + } + + return 0; +} + +static const struct regulator_ops rt9471_otg_ops = { + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, + .list_voltage = regulator_list_voltage_linear, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .set_current_limit = regulator_set_current_limit_regmap, + .get_current_limit = regulator_get_current_limit_regmap, +}; + +static const unsigned int rt9471_otg_microamp[] = { 500000, 1200000, }; + +static const struct regulator_desc rt9471_otg_rdesc = { + .of_match = of_match_ptr("usb-otg-vbus-regulator"), + .name = "rt9471-otg-vbus", + .owner = THIS_MODULE, + .type = REGULATOR_VOLTAGE, + .ops = &rt9471_otg_ops, + .min_uV = RT9471_OTGCV_MINUV, + .uV_step = RT9471_OTGCV_STEPUV, + .n_voltages = RT9471_NUM_VOTG, + .curr_table = rt9471_otg_microamp, + .n_current_limits = ARRAY_SIZE(rt9471_otg_microamp), + .enable_mask = RT9471_OTGEN_MASK, + .enable_reg = RT9471_REG_FUNC, + .vsel_reg = RT9471_REG_OTGCFG, + .vsel_mask = RT9471_OTGCV_MASK, + .csel_reg = RT9471_REG_OTGCFG, + .csel_mask = RT9471_OTGCC_MASK, +}; + +static int rt9471_register_otg_regulator(struct rt9471_chip *chip) +{ + struct device *dev = chip->dev; + struct regulator_config cfg = { .dev = dev, .driver_data = chip }; + + chip->otg_rdev = devm_regulator_register(dev, &rt9471_otg_rdesc, &cfg); + + return PTR_ERR_OR_ZERO(chip->otg_rdev); +} + +static inline struct rt9471_chip *psy_device_to_chip(struct device *dev) +{ + return power_supply_get_drvdata(to_power_supply(dev)); +} + +static ssize_t sysoff_enable_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct rt9471_chip *chip = psy_device_to_chip(dev); + unsigned int sysoff_enable; + int ret; + + ret = regmap_field_read(chip->rm_fields[F_BATFET_DIS], &sysoff_enable); + if (ret) + return ret; + + return sysfs_emit(buf, "%d\n", sysoff_enable); +} + +static ssize_t sysoff_enable_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct rt9471_chip *chip = psy_device_to_chip(dev); + unsigned int tmp; + int ret; + + ret = kstrtouint(buf, 10, &tmp); + if (ret) + return ret; + + ret = regmap_field_write(chip->rm_fields[F_BATFET_DIS], !!tmp); + if (ret) + return ret; + + return count; +} + +static ssize_t port_detect_enable_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct rt9471_chip *chip = psy_device_to_chip(dev); + unsigned int bc12_enable; + int ret; + + ret = regmap_field_read(chip->rm_fields[F_BC12_EN], &bc12_enable); + if (ret) + return ret; + + return sysfs_emit(buf, "%d\n", bc12_enable); +} + +static ssize_t port_detect_enable_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct rt9471_chip *chip = psy_device_to_chip(dev); + unsigned int tmp; + int ret; + + ret = kstrtouint(buf, 10, &tmp); + if (ret) + return ret; + + ret = regmap_field_write(chip->rm_fields[F_BC12_EN], !!tmp); + if (ret) + return ret; + + return count; +} + +static DEVICE_ATTR_RW(sysoff_enable); +static DEVICE_ATTR_RW(port_detect_enable); + +static struct attribute *rt9471_sysfs_entries[] = { + &dev_attr_sysoff_enable.attr, + &dev_attr_port_detect_enable.attr, + NULL +}; + +static const struct attribute_group rt9471_attr_group = { + .attrs = rt9471_sysfs_entries, +}; + +static const struct attribute_group *rt9471_attr_groups[] = { + &rt9471_attr_group, + NULL +}; + +static int rt9471_register_psy(struct rt9471_chip *chip) +{ + struct device *dev = chip->dev; + struct power_supply_desc *desc = &chip->psy_desc; + struct power_supply_config cfg = {}; + char *psy_name; + + cfg.drv_data = chip; + cfg.of_node = dev->of_node; + cfg.attr_grp = rt9471_attr_groups; + + psy_name = devm_kasprintf(dev, GFP_KERNEL, "rt9471-%s", dev_name(dev)); + if (!psy_name) + return -ENOMEM; + + desc->name = psy_name; + desc->type = POWER_SUPPLY_TYPE_USB; + desc->usb_types = rt9471_charger_usb_types; + desc->num_usb_types = ARRAY_SIZE(rt9471_charger_usb_types); + desc->properties = rt9471_charger_properties; + desc->num_properties = ARRAY_SIZE(rt9471_charger_properties); + desc->get_property = rt9471_charger_get_property; + desc->set_property = rt9471_charger_set_property; + desc->property_is_writeable = rt9471_charger_property_is_writeable; + + chip->psy = devm_power_supply_register(dev, desc, &cfg); + + return PTR_ERR_OR_ZERO(chip->psy); +} + +static const struct regmap_irq rt9471_regmap_irqs[] = { + REGMAP_IRQ_REG_LINE(RT9471_IRQ_BC12_DONE, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_DETACH, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_RECHG, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_CHG_DONE, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_BG_CHG, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_IE0C, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_CHG_RDY, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_VBUS_GD, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_CHG_BATOV, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_CHG_SYSOV, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_CHG_TOUT, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_CHG_BUSUV, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_CHG_THREG, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_CHG_AICR, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_CHG_MIVR, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_SYS_SHORT, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_SYS_MIN, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_AICC_DONE, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_PE_DONE, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_JEITA_COLD, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_JEITA_COOL, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_JEITA_WARM, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_JEITA_HOT, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_OTG_FAULT, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_OTG_LBP, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_OTG_CC, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_WDT, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_VAC_OV, 8), + REGMAP_IRQ_REG_LINE(RT9471_IRQ_OTP, 8), +}; + +static const struct regmap_irq_chip rt9471_irq_chip = { + .name = "rt9471-irqs", + .status_base = RT9471_REG_IRQ0, + .mask_base = RT9471_REG_MASK0, + .num_regs = RT9471_NUM_IRQ_REGS, + .irqs = rt9471_regmap_irqs, + .num_irqs = ARRAY_SIZE(rt9471_regmap_irqs), +}; + +static const struct reg_sequence rt9471_init_regs[] = { + REG_SEQ0(RT9471_REG_INFO, 0x80), /* REG_RST */ + REG_SEQ0(RT9471_REG_TOP, 0xC0), /* WDT = 0 */ + REG_SEQ0(RT9471_REG_FUNC, 0x01), /* BATFET_DIS_DLY = 0 */ + REG_SEQ0(RT9471_REG_IBUS, 0x0A), /* AUTO_AICR = 0 */ + REG_SEQ0(RT9471_REG_VBUS, 0xC6), /* VAC_OVP = 14V */ + REG_SEQ0(RT9471_REG_JEITA, 0x38), /* JEITA = 0 */ + REG_SEQ0(RT9471_REG_DPDMDET, 0x31), /* BC12_EN = 0, DCP_DP_OPT = 1 */ +}; + +static int rt9471_check_devinfo(struct rt9471_chip *chip) +{ + struct device *dev = chip->dev; + unsigned int dev_id; + int ret; + + ret = regmap_field_read(chip->rm_fields[F_DEVICE_ID], &dev_id); + if (ret) + return dev_err_probe(dev, ret, "Failed to read device_id\n"); + + switch (dev_id) { + case RT9470_DEVID: + case RT9470D_DEVID: + case RT9471_DEVID: + case RT9471D_DEVID: + return 0; + default: + return dev_err_probe(dev, -ENODEV, "Incorrect device id\n"); + } +} + +static bool rt9471_accessible_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case 0x00 ... 0x0F: + case 0x10 ... 0x13: + case 0x20 ... 0x33: + case 0x40 ... 0xA1: + return true; + default: + return false; + } +} + +static const struct regmap_config rt9471_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 0xA1, + .writeable_reg = rt9471_accessible_reg, + .readable_reg = rt9471_accessible_reg, +}; + +static int rt9471_probe(struct i2c_client *i2c) +{ + struct device *dev = &i2c->dev; + struct rt9471_chip *chip; + struct gpio_desc *ce_gpio; + struct regmap *regmap; + int ret; + + chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL); + if (!chip) + return -ENOMEM; + + chip->dev = dev; + mutex_init(&chip->var_lock); + i2c_set_clientdata(i2c, chip); + + /* Default pull charge enable gpio to make 'CHG_EN' by SW control only */ + ce_gpio = devm_gpiod_get_optional(dev, "charge-enable", GPIOD_OUT_HIGH); + if (IS_ERR(chip->ce_gpio)) + return dev_err_probe(dev, PTR_ERR(ce_gpio), + "Failed to config charge enable gpio\n"); + + regmap = devm_regmap_init_i2c(i2c, &rt9471_regmap_config); + if (IS_ERR(regmap)) + return dev_err_probe(dev, PTR_ERR(regmap), "Failed to init regmap\n"); + + chip->regmap = regmap; + + ret = devm_regmap_field_bulk_alloc(dev, regmap, chip->rm_fields, + rt9471_reg_fields, + ARRAY_SIZE(rt9471_reg_fields)); + if (ret) + return dev_err_probe(dev, ret, "Failed to alloc regmap field\n"); + + ret = rt9471_check_devinfo(chip); + if (ret) + return ret; + + ret = regmap_register_patch(regmap, rt9471_init_regs, + ARRAY_SIZE(rt9471_init_regs)); + if (ret) + return dev_err_probe(dev, ret, "Failed to init registers\n"); + + ret = devm_regmap_add_irq_chip(dev, regmap, i2c->irq, + IRQF_TRIGGER_FALLING | IRQF_ONESHOT, 0, + &rt9471_irq_chip, &chip->irq_chip_data); + if (ret) + return dev_err_probe(dev, ret, "Failed to add IRQ chip\n"); + + ret = rt9471_register_psy(chip); + if (ret) + return dev_err_probe(dev, ret, "Failed to register psy\n"); + + ret = rt9471_register_otg_regulator(chip); + if (ret) + return dev_err_probe(dev, ret, "Failed to register otg\n"); + + ret = rt9471_register_interrupts(chip); + if (ret) + return ret; + + /* After IRQs are all initialized, enable port detection by default */ + return regmap_field_write(chip->rm_fields[F_BC12_EN], 1); +} + +static void rt9471_shutdown(struct i2c_client *i2c) +{ + struct rt9471_chip *chip = i2c_get_clientdata(i2c); + + /* + * There's no external reset pin. Do register reset to guarantee charger + * function is normal after shutdown + */ + regmap_field_write(chip->rm_fields[F_REG_RST], 1); +} + +static const struct of_device_id rt9471_of_device_id[] = { + { .compatible = "richtek,rt9471" }, + {} +}; +MODULE_DEVICE_TABLE(of, rt9471_of_device_id); + +static struct i2c_driver rt9471_driver = { + .driver = { + .name = "rt9471", + .of_match_table = rt9471_of_device_id, + }, + .probe_new = rt9471_probe, + .shutdown = rt9471_shutdown, +}; +module_i2c_driver(rt9471_driver); + +MODULE_DESCRIPTION("Richtek RT9471 charger driver"); +MODULE_AUTHOR("Alina Yu "); +MODULE_AUTHOR("ChiYuan Huang "); +MODULE_LICENSE("GPL"); From patchwork Wed Sep 14 16:30:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: cy_huang X-Patchwork-Id: 606744 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 322C7C6FA8D for ; Wed, 14 Sep 2022 16:32:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229587AbiINQcG (ORCPT ); Wed, 14 Sep 2022 12:32:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44808 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230110AbiINQbj (ORCPT ); Wed, 14 Sep 2022 12:31:39 -0400 Received: from mail-pg1-x529.google.com (mail-pg1-x529.google.com [IPv6:2607:f8b0:4864:20::529]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0A2DB7CAA9; Wed, 14 Sep 2022 09:30:32 -0700 (PDT) Received: by mail-pg1-x529.google.com with SMTP id q63so14780542pga.9; Wed, 14 Sep 2022 09:30:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=references:in-reply-to:message-id:date:subject:cc:to:from:from:to :cc:subject:date; bh=bj3Xd1B2V1MMZML2lCuLJf7Wr+7882Xj1TmG9cTsN8k=; b=DOtnThQ4jR3IjbiA8VsfYvEj8rd3bK+a00Zhs1fYgFzXHXcixcRCiJV2IcLc1r6znT QKWTCfUfPFn40CNBZ6h4/DqONIpx/P0w7nHBu6hjJ4m9m/eHOWZhszvLy031gG0xUVgn QgkSCThdOM+EbWjiDPj69QWVHwpZHVs4zR6gooY9owJ8LMcH4UVmu2em2ep/UbsYa2N3 4xZDwBNEXv8yqFeabZkFcSCaKxf9W06LhTKmxEWfOPc3X+hb/WVe9rJgFupwAyBvXrfi nzDgUmzUctMGODJ8swgj2LydmLDwrXr+fkEwX2abaHM4WVcLIsRHj5uYsNnrjkkwqY/O NTVA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=references:in-reply-to:message-id:date:subject:cc:to:from :x-gm-message-state:from:to:cc:subject:date; bh=bj3Xd1B2V1MMZML2lCuLJf7Wr+7882Xj1TmG9cTsN8k=; b=iN/UTCGgBUOWnT4dAQMKGrnBrN606Fk4o7Nxp40jamQR4I88NsQqRo6cnf3eOkyDW8 w8uJPC2Wr9PUJ9Pi6G/qrAhTUhxRqnjVQAJ2F896NR8uoPyArICuG7L2n94jDF2qbzcF vGG3J9yrArT0b4ZNTmyRvWXdkBbS5TMjLY6uGq763FqicXe4PxICPzmgnoYTSYlAE70B bJb+1xBYFWZBiFcB/VJ44PwqQ2vH8KhpFL6cRMY2jnQkS+Oj3M/DULaQ+hsmymGstTFg 1VzfttrKuV7hkz8pmtVRElRn5vbJnrvijYXSz9sGcj9atkFY9DacWMzeqnh8naXlHiWD cz3w== X-Gm-Message-State: ACgBeo2g5V5fPru62K1+ZSaQwlU6mLb//ycL3bsyXzF0EAFQnj03qmtl VylFJACZ97+ntpyAO6QSyhk= X-Google-Smtp-Source: AA6agR5XYgCuQzv8omJRokcCH7uU16KBeGarnpEFW8KHmeuPCjPYdig0regHKgnhKFXBKKD9J0NkgA== X-Received: by 2002:a63:2b48:0:b0:434:eb45:9c6a with SMTP id r69-20020a632b48000000b00434eb459c6amr30596556pgr.508.1663173030888; Wed, 14 Sep 2022 09:30:30 -0700 (PDT) Received: from localhost.localdomain (1-171-4-145.dynamic-ip.hinet.net. [1.171.4.145]) by smtp.gmail.com with ESMTPSA id l22-20020a17090af8d600b002031264a864sm1899991pjd.41.2022.09.14.09.30.28 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 14 Sep 2022 09:30:30 -0700 (PDT) From: cy_huang To: robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, sre@kernel.org Cc: mazziesaccount@gmail.com, alina_yu@richtek.com, cy_huang@richtek.com, alinayu829@gmail.com, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 3/3] Documentation: power: rt9471: Document exported sysfs entries Date: Thu, 15 Sep 2022 00:30:15 +0800 Message-Id: <1663173015-7934-4-git-send-email-u0084500@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1663173015-7934-1-git-send-email-u0084500@gmail.com> References: <1663173015-7934-1-git-send-email-u0084500@gmail.com> Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: ChiYuan Huang Document the settings exported by rt9471 charger driver through sysfs entries: - sysoff_enable - port_detect_enable Signed-off-by: ChiYuan Huang --- Since v5: - Recover all the change in sysfs-class-power. - New a sysfs-class-power-rt9471 file. - Remove 'charge_term_enable' sysfs entry, directly integrate it in 'charge_term_current' power supply property control. --- Documentation/ABI/testing/sysfs-class-power-rt9471 | 29 ++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-class-power-rt9471 diff --git a/Documentation/ABI/testing/sysfs-class-power-rt9471 b/Documentation/ABI/testing/sysfs-class-power-rt9471 new file mode 100644 index 00000000..ad5b049 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-power-rt9471 @@ -0,0 +1,29 @@ +What: /sys/class/power_supply/rt9471-*/sysoff_enable +Date: Oct 2022 +KernelVersion: 6.1 +Contact: ChiYuan Huang +Description: + This entry allows enabling the sysoff mode of rt9471 charger devices. + If enabled and the input is removed, the internal battery FET is turned + off to reduce the leakage from the BAT pin. See device datasheet for details. + It's commonly used when the product enter shipping stage. + + Access: Read, Write + Valid values: + - 1: enabled + - 0: disabled + +What: /sys/class/power_supply/rt9471-*/port_detect_enable +Date: Oct 2022 +KernelVersion: 6.1 +Contact: ChiYuan Huang +Description: + This entry allows enabling the USB BC12 port detect function of rt9471 charger + devices. If enabled and VBUS is inserted, device will start to do the BC12 + port detect and report the usb port type when port detect is done. See + datasheet for details. Normally controlled when TypeC/USBPD port integrated. + + Access: Read, Write + Valid values: + - 1: enabled + - 0: disabled