From patchwork Wed Jul 19 09:24:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alina Yu X-Patchwork-Id: 122480 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:c923:0:b0:3e4:2afc:c1 with SMTP id j3csp2311644vqt; Wed, 19 Jul 2023 02:30:41 -0700 (PDT) X-Google-Smtp-Source: APBJJlFajZb6dnALItVtp5JWQT/AHjVFRN8/3FLKVcAfxurYeyIt7ECBnIAUvJxdgScNSXPEnBZp X-Received: by 2002:a05:6a20:158f:b0:134:7364:a59f with SMTP id h15-20020a056a20158f00b001347364a59fmr13435945pzj.29.1689759041509; Wed, 19 Jul 2023 02:30:41 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1689759041; cv=none; d=google.com; s=arc-20160816; b=iiICfX3OK1pKkAL/AIRXKZ8IKKSjcD0epqN1UEyGd+SweHV4ut1KMvrbB6/ag3FBaq UYcUamxXcXK49Pd2LhsUjn3ZJBiOfW/V/I0hX7D8PqSJc0PUIUIi6og4xwhZu3wUuhr6 tSJ5aF9nMg27V+ZHMLb5RYTgQZDLMww2gWJdcimyLGTqo0f5dAb3z+bdj+ZvnwxgspIg 8TMb5h+LG3SLnqY9tB/yUJOESqpioBg95GPhAjCJomOCmPD8pGSAVuypZB5wnBjEOqUB JMb+tN85BCLwNUUnrwXl8gmCgbWIJ77GIk1+LMvTj2lGDuXJREOArxKubXKdtC4bX19o VgPg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:references:in-reply-to:message-id :date:subject:cc:to:from; bh=wFQjRvgKiKuYyNdBjihalyxscX8s9SHn8vAh/bU2j34=; fh=URTg7QUyL3MAeAYyfWnXjCZoH/RbWBmTfJiY0fFH9aM=; b=zcP1RRLrYZGxtB0uoU98QeL8Y59x3jmi7M37V7hS1G8ZG4ytx6bKQfJvfU/1ngQH4Z e304o9sZe5NNDseDgZu8AowGzIo6nnj/doJrJ5DvRbxudtRvGF29qImVWrtQGLPrgm0G hHqYEzbqLSe35X30VVXDzDqDfcXVwgMIePjXOveOdhzFVkz8hVjIOEa3rV2gA2h3D2mC 1bwYPYG6ClU0tj50jPYKoeaeiTgekyXsr3VPvSePLW/2HL8z4RTY4ENxegbDeIvw/9OV P/Rvjy9rRM2xXzR59xoczQGKaaOxn8YPuOtl+Gi+6YdTXPzD4JUZTOzoks+nCi7aNVpX 0b/Q== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id k18-20020a635612000000b0055392732f64si3210290pgb.498.2023.07.19.02.30.27; Wed, 19 Jul 2023 02:30:41 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229934AbjGSJZJ (ORCPT + 99 others); Wed, 19 Jul 2023 05:25:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36610 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230111AbjGSJZG (ORCPT ); Wed, 19 Jul 2023 05:25:06 -0400 Received: from mg.richtek.com (mg.richtek.com [220.130.44.152]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id F0E3210D4; Wed, 19 Jul 2023 02:24:58 -0700 (PDT) X-MailGates: (SIP:2,PASS,NONE)(compute_score:DELIVER,40,3) Received: from 192.168.10.46 by mg.richtek.com with MailGates ESMTPS Server V6.0(1455445:0:AUTH_RELAY) (envelope-from ) (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256/256); Wed, 19 Jul 2023 17:24:46 +0800 (CST) Received: from ex3.rt.l (192.168.10.46) by ex3.rt.l (192.168.10.46) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.25; Wed, 19 Jul 2023 17:24:46 +0800 Received: from linuxcarl2.richtek.com (192.168.10.154) by ex3.rt.l (192.168.10.45) with Microsoft SMTP Server id 15.2.1118.25 via Frontend Transport; Wed, 19 Jul 2023 17:24:46 +0800 From: To: , , , , CC: , , Subject: [PATCH v4 1/2] regulator: dt-bindings: rtq2208: Add Richtek RTQ2208 SubPMIC Date: Wed, 19 Jul 2023 17:24:45 +0800 Message-ID: <1689758686-14409-2-git-send-email-alina_yu@richtek.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1689758686-14409-1-git-send-email-alina_yu@richtek.com> References: <1689758686-14409-1-git-send-email-alina_yu@richtek.com> MIME-Version: 1.0 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1771840776717748921 X-GMAIL-MSGID: 1771840776717748921 From: alinayu Add bindings for Richtek RTQ2208 IC controlled SubPMIC Signed-off-by: Alina Yu --- v4 - Modify filename to "richtek,rtq2208" - Add more desciptions for "regulator-allowed-modes" --- .../bindings/regulator/richtek,rtq2208.yaml | 208 +++++++++++++++++++++ 1 file changed, 208 insertions(+) create mode 100644 Documentation/devicetree/bindings/regulator/richtek,rtq2208.yaml diff --git a/Documentation/devicetree/bindings/regulator/richtek,rtq2208.yaml b/Documentation/devicetree/bindings/regulator/richtek,rtq2208.yaml new file mode 100644 index 0000000..6cc441f --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/richtek,rtq2208.yaml @@ -0,0 +1,208 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/regulator/richtek,rtq2208-regulator.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Richtek RTQ2208 SubPMIC Regulator + +maintainers: + - Alina Yu + +description: | + RTQ2208 is a highly integrated power converter that offers functional safety dual + multi-configurable synchronous buck converters and two LDOs. + + Bucks support "regulator-allowed-modes" and "regulator-mode". The former defines the permitted + switching operation in normal mode; the latter defines the operation in suspend to RAM mode. + + No matter the RTQ2208 is configured to normal or suspend to RAM mode, there are two switching + operation modes for all buck rails, automatic power saving mode (Auto mode) and forced continuous + conduction mode (FCCM). + + The definition of modes is in the datasheet which is available in below link + and their meaning is:: + 0 - Auto mode for power saving, which reducing the switching frequency at light load condition + to maintain high frequency. + 1 - FCCM to meet the strict voltage regulation accuracy, which keeping constant switching frequency. + + Datasheet will be available soon at + https://www.richtek.com/assets/Products + +properties: + compatible: + enum: + - richtek,rtq2208 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + richtek,mtp-sel: + type: boolean + description: + vout register selection based on this boolean value. + false - Using DVS0 register setting to adjust vout + true - Using DVS1 register setting to adjust vout + + regulators: + type: object + + patternProperties: + "^buck-[a-h]$": + type: object + $ref: regulator.yaml# + unevaluatedProperties: false + description: + description for buck-[a-h] regulator. + + properties: + regulator-allowed-modes: + description: + two buck modes in different switching accuracy. + 0 - Auto mode + 1 - FCCM + items: + enum: [0, 1] + + regulator-mode: + enum: [0, 1] + description: + describe buck initial operating mode in suspend state. + + "^ldo[1-2]$": + type: object + $ref: regulator.yaml# + description: + regulator description for ldo[1-2]. + + properties: + regulator-compatible: + pattern: "^LDO[1-2]$" + + richtek,fixed-uV: + $ref: "/schemas/types.yaml#/definitions/uint32" + enum: [ 900000, 1200000, 1800000, 3300000 ] + description: + the fixed voltage in micro volt which is decided at the factory. + +required: + - compatible + - reg + - regulators + +unevaluatedProperties: false + +examples: + - | + #include + i2c { + #address-cells = <1>; + #size-cells = <0>; + + pmic@10 { + compatible = "richtek,rtq2208"; + reg = <0x10>; + interrupts-extended = <&gpio26 0 IRQ_TYPE_LEVEL_LOW>; + richtek,mtp-sel; + + regulators { + buck-a { + regulator-min-microvolt = <400000>; + regulator-max-microvolt = <2050000>; + regulator-allowed-modes = <0 1>; + regulator-always-on; + regulator-state-mem { + regulator-on-in-suspend; + regulator-mode = <1>; + }; + }; + buck-b { + regulator-min-microvolt = <400000>; + regulator-max-microvolt = <2050000>; + regulator-allowed-modes = <0 1>; + regulator-always-on; + regulator-state-mem { + regulator-on-in-suspend; + regulator-mode = <1>; + }; + }; + buck-c { + regulator-min-microvolt = <400000>; + regulator-max-microvolt = <2050000>; + regulator-allowed-modes = <0 1>; + regulator-always-on; + regulator-state-mem { + regulator-on-in-suspend; + regulator-mode = <1>; + }; + }; + buck-d { + regulator-min-microvolt = <400000>; + regulator-max-microvolt = <2050000>; + regulator-allowed-modes = <0 1>; + regulator-always-on; + regulator-state-mem { + regulator-on-in-suspend; + regulator-mode = <1>; + }; + }; + buck-e { + regulator-min-microvolt = <400000>; + regulator-max-microvolt = <2050000>; + regulator-allowed-modes = <0 1>; + regulator-always-on; + regulator-state-mem { + regulator-on-in-suspend; + regulator-mode = <1>; + }; + }; + buck-f { + regulator-min-microvolt = <400000>; + regulator-max-microvolt = <2050000>; + regulator-allowed-modes = <0 1>; + regulator-always-on; + regulator-state-mem { + regulator-on-in-suspend; + regulator-mode = <1>; + }; + }; + buck-g { + regulator-min-microvolt = <400000>; + regulator-max-microvolt = <2050000>; + regulator-allowed-modes = <0 1>; + regulator-always-on; + regulator-state-mem { + regulator-on-in-suspend; + regulator-mode = <1>; + }; + }; + buck-h { + regulator-min-microvolt = <400000>; + regulator-max-microvolt = <2050000>; + regulator-allowed-modes = <0 1>; + regulator-always-on; + regulator-state-mem { + regulator-on-in-suspend; + regulator-mode = <1>; + }; + }; + ldo1 { + richtek,fixed-uV = <1200000>; + regulator-always-on; + regulator-state-mem { + regulator-on-in-suspend; + }; + }; + ldo2 { + regulator-always-on; + richtek,fixed-uV = <3300000>; + regulator-state-mem { + regulator-on-in-suspend; + }; + }; + }; + }; + }; From patchwork Wed Jul 19 09:24:46 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alina Yu X-Patchwork-Id: 122481 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:c923:0:b0:3e4:2afc:c1 with SMTP id j3csp2311671vqt; Wed, 19 Jul 2023 02:30:45 -0700 (PDT) X-Google-Smtp-Source: APBJJlHHHMmcq2NwMBtlSllIsOjnu0j7oqLtMOoy8Up1PawqrsXqrk9gGB4uYqvqV1KpS91YDNUR X-Received: by 2002:a05:6358:94a6:b0:137:8946:52fd with SMTP id i38-20020a05635894a600b00137894652fdmr276265rwb.16.1689759045561; Wed, 19 Jul 2023 02:30:45 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1689759045; cv=none; d=google.com; s=arc-20160816; b=Q0A+GI3ySXiIZBLgimaCDkaFIkCnmQO4Suuog3RItWrLDT0k9dU1oiUBWb17FIw2KK xSKoYrdnWvAS5bYSrSI7nNW5M4v+k1rcvxBRPkEnsia/XczvknpAG1gDFxiFHV40QgGf ao4MlxUCSflYYjUrxvaAHe1n78Omaxfcc4sT0RHPOSfA2YucxcL19SRy/Ikcf/rdJIdR Poeb/tzeNj/XAkssTc5oAZqgiac/Phf/Qg4JLbidSpeBJtQE9s4gluIjSdXrvmgpJ1/1 qPB6TcbQUbzuJl6FOVRhWEYdt/CLFKd/YrxqFFQwz/bAVOKLmArk8VIXIh57VLktvXYI Zcrw== ARC-Message-Signature: i=1; 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[2620:137:e000::1:20]) by mx.google.com with ESMTP id s5-20020a632145000000b005577ad28ab1si2953653pgm.643.2023.07.19.02.30.32; Wed, 19 Jul 2023 02:30:45 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230474AbjGSJZN (ORCPT + 99 others); Wed, 19 Jul 2023 05:25:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36612 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230122AbjGSJZG (ORCPT ); Wed, 19 Jul 2023 05:25:06 -0400 Received: from mg.richtek.com (mg.richtek.com [220.130.44.152]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 86ADAE42; Wed, 19 Jul 2023 02:24:58 -0700 (PDT) X-MailGates: (SIP:2,PASS,NONE)(compute_score:DELIVER,40,3) Received: from 192.168.10.46 by mg.richtek.com with MailGates ESMTPS Server V6.0(1455446:0:AUTH_RELAY) (envelope-from ) (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256/256); Wed, 19 Jul 2023 17:24:46 +0800 (CST) Received: from ex3.rt.l (192.168.10.46) by ex3.rt.l (192.168.10.46) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.25; Wed, 19 Jul 2023 17:24:46 +0800 Received: from linuxcarl2.richtek.com (192.168.10.154) by ex3.rt.l (192.168.10.45) with Microsoft SMTP Server id 15.2.1118.25 via Frontend Transport; Wed, 19 Jul 2023 17:24:46 +0800 From: To: , , , , CC: , , Subject: [PATCH v4 2/2] regulator: rtq2208: Add Richtek RTQ2208 SubPMIC driver Date: Wed, 19 Jul 2023 17:24:46 +0800 Message-ID: <1689758686-14409-3-git-send-email-alina_yu@richtek.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1689758686-14409-1-git-send-email-alina_yu@richtek.com> References: <1689758686-14409-1-git-send-email-alina_yu@richtek.com> MIME-Version: 1.0 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1771840781006841218 X-GMAIL-MSGID: 1771840781006841218 From: alinayu Add support for the RTQ2208 SubPMIC This ic integrates with configurable, synchrnous buck converters and two ldos. Signed-off-by: Alina Yu --- drivers/regulator/Kconfig | 11 + drivers/regulator/Makefile | 1 + drivers/regulator/rtq2208-regulator.c | 538 ++++++++++++++++++++++++++++++++++ 3 files changed, 550 insertions(+) create mode 100644 drivers/regulator/rtq2208-regulator.c diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index e5f3613..a6b2c84 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -1213,6 +1213,17 @@ config REGULATOR_RTQ6752 synchronous boost converters for PAVDD, and one synchronous NAVDD buck-boost. This device is suitable for automotive TFT-LCD panel. +config REGULATOR_RTQ2208 + tristate "Richtek RTQ2208 SubPMIC Regulator" + depends on I2C + select REGMAP_I2C + help + This driver adds support for RTQ2208 SubPMIC regulators. + The RTQ2208 is a multi-phase, programmable power management IC that + integrate with dual multi-configurable, synchronous buck converters + and two ldos. It features wide output voltage range from 0.4V to 2.05V + and the capability to configure the corresponding power stages. + config REGULATOR_S2MPA01 tristate "Samsung S2MPA01 voltage regulator" depends on MFD_SEC_CORE || COMPILE_TEST diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index 58dfe01..04cbad17 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -143,6 +143,7 @@ obj-$(CONFIG_REGULATOR_RT6245) += rt6245-regulator.o obj-$(CONFIG_REGULATOR_RTMV20) += rtmv20-regulator.o obj-$(CONFIG_REGULATOR_RTQ2134) += rtq2134-regulator.o obj-$(CONFIG_REGULATOR_RTQ6752) += rtq6752-regulator.o +obj-$(CONFIG_REGULATOR_RTQ2208) += rtq2208-regulator.o obj-$(CONFIG_REGULATOR_S2MPA01) += s2mpa01.o obj-$(CONFIG_REGULATOR_S2MPS11) += s2mps11.o obj-$(CONFIG_REGULATOR_S5M8767) += s5m8767.o diff --git a/drivers/regulator/rtq2208-regulator.c b/drivers/regulator/rtq2208-regulator.c new file mode 100644 index 0000000..05bcd8f --- /dev/null +++ b/drivers/regulator/rtq2208-regulator.c @@ -0,0 +1,538 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#include +#include +#include +#include +#include +#include + +/* Register */ +#define RTQ2208_REG_GLOBAL_INT1 0x12 +#define RTQ2208_REG_FLT_RECORDBUCK_CB 0x18 +#define RTQ2208_REG_GLOBAL_INT1_MASK 0x1D +#define RTQ2208_REG_FLT_MASKBUCK_CB 0x1F +#define RTQ2208_REG_BUCK_C_CFG0 0x32 +#define RTQ2208_REG_BUCK_B_CFG0 0x42 +#define RTQ2208_REG_BUCK_A_CFG0 0x52 +#define RTQ2208_REG_BUCK_D_CFG0 0x62 +#define RTQ2208_REG_BUCK_G_CFG0 0x72 +#define RTQ2208_REG_BUCK_F_CFG0 0x82 +#define RTQ2208_REG_BUCK_E_CFG0 0x92 +#define RTQ2208_REG_BUCK_H_CFG0 0xA2 +#define RTQ2208_REG_LDO1_CFG 0xB1 +#define RTQ2208_REG_LDO2_CFG 0xC1 + +/* Mask */ +#define RTQ2208_BUCK_NR_MTP_SEL_MASK GENMASK(7, 0) +#define RTQ2208_BUCK_EN_NR_MTP_SEL0_MASK BIT(0) +#define RTQ2208_BUCK_EN_NR_MTP_SEL1_MASK BIT(1) +#define RTQ2208_BUCK_RSPUP_MASK GENMASK(6, 4) +#define RTQ2208_BUCK_RSPDN_MASK GENMASK(2, 0) +#define RTQ2208_BUCK_NRMODE_MASK BIT(5) +#define RTQ2208_BUCK_STRMODE_MASK BIT(5) +#define RTQ2208_BUCK_EN_STR_MASK BIT(0) +#define RTQ2208_LDO_EN_STR_MASK BIT(7) +#define RTQ2208_EN_DIS_MASK BIT(0) +#define RTQ2208_BUCK_RAMP_SEL_MASK GENMASK(2, 0) +#define RTQ2208_HD_INT_MASK BIT(0) + +/* Size */ +#define RTQ2208_VOUT_MAXNUM 256 +#define RTQ2208_BUCK_NUM_IRQ_REGS 5 +#define RTQ2208_STS_NUM_IRQ_REGS 2 + +/* Value */ +#define RTQ2208_RAMP_VALUE_MIN_uV 500 +#define RTQ2208_RAMP_VALUE_MAX_uV 64000 + +#define RTQ2208_BUCK_MASK(uv_irq, ov_irq) (1 << ((uv_irq) % 8) | 1 << ((ov_irq) % 8)) + +enum { + RTQ2208_BUCK_B = 0, + RTQ2208_BUCK_C, + RTQ2208_BUCK_D, + RTQ2208_BUCK_A, + RTQ2208_BUCK_F, + RTQ2208_BUCK_G, + RTQ2208_BUCK_H, + RTQ2208_BUCK_E, + RTQ2208_LDO2, + RTQ2208_LDO1, + RTQ2208_LDO_MAX, +}; + +enum { + RTQ2208_AUTO_MODE = 0, + RTQ2208_FCCM, +}; + +struct rtq2208_regulator_desc { + struct regulator_desc desc; + unsigned int mtp_sel_reg; + unsigned int mtp_sel_mask; + unsigned int mode_reg; + unsigned int mode_mask; + unsigned int suspend_config_reg; + unsigned int suspend_enable_mask; + unsigned int suspend_mode_mask; + unsigned int fixed_uV; +}; + +struct rtq2208_rdev_map { + struct regulator_dev *rdev[RTQ2208_LDO_MAX]; + struct regmap *regmap; + struct device *dev; +}; + +/* set Normal Auto/FCCM mode */ +static int rtq2208_set_mode(struct regulator_dev *rdev, unsigned int mode) +{ + struct rtq2208_regulator_desc *rdesc = + (struct rtq2208_regulator_desc *)rdev->desc; + unsigned int val, shift; + + switch (mode) { + case REGULATOR_MODE_NORMAL: + val = RTQ2208_AUTO_MODE; + break; + case REGULATOR_MODE_FAST: + val = RTQ2208_FCCM; + break; + default: + return -EINVAL; + } + + shift = ffs(rdesc->mode_mask) - 1; + return regmap_update_bits(rdev->regmap, rdesc->mode_reg, + rdesc->mode_mask, val << shift); +} + +static unsigned int rtq2208_get_mode(struct regulator_dev *rdev) +{ + struct rtq2208_regulator_desc *rdesc = + (struct rtq2208_regulator_desc *)rdev->desc; + unsigned int mode_val; + int ret; + + ret = regmap_read(rdev->regmap, rdesc->mode_reg, &mode_val); + if (ret) + return REGULATOR_MODE_INVALID; + + return (mode_val & rdesc->mode_mask) ? REGULATOR_MODE_FAST : REGULATOR_MODE_NORMAL; +} + +static int rtq2208_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay) +{ + const struct regulator_desc *rdesc = rdev->desc; + unsigned int sel = 0, val; + + ramp_delay = max(ramp_delay, RTQ2208_RAMP_VALUE_MIN_uV); + ramp_delay = min(ramp_delay, RTQ2208_RAMP_VALUE_MAX_uV); + + ramp_delay /= RTQ2208_RAMP_VALUE_MIN_uV; + + /* + * fls(ramp_delay) - 1: doing LSB shift, let it starts from 0 + * + * RTQ2208_BUCK_RAMP_SEL_MASK - sel: doing descending order shifting. + * Because the relation of seleltion and value is like that + * + * seletion: value + * 000: 64mv + * 001: 32mv + * ... + * 111: 0.5mv + * + * For example, if I would like to select 64mv, the fls(ramp_delay) - 1 will be 0b111, + * and I need to use 0b111 - sel to do the shifting + */ + + sel = fls(ramp_delay) - 1; + sel = RTQ2208_BUCK_RAMP_SEL_MASK - sel; + + val = FIELD_PREP(RTQ2208_BUCK_RSPUP_MASK, sel) | FIELD_PREP(RTQ2208_BUCK_RSPDN_MASK, sel); + + return regmap_update_bits(rdev->regmap, rdesc->ramp_reg, + RTQ2208_BUCK_RSPUP_MASK | RTQ2208_BUCK_RSPDN_MASK, val); +} + +static int rtq2208_set_suspend_enable(struct regulator_dev *rdev) +{ + struct rtq2208_regulator_desc *rdesc = + (struct rtq2208_regulator_desc *)rdev->desc; + + return regmap_set_bits(rdev->regmap, rdesc->suspend_config_reg, rdesc->suspend_enable_mask); +} + +static int rtq2208_set_suspend_disable(struct regulator_dev *rdev) +{ + struct rtq2208_regulator_desc *rdesc = + (struct rtq2208_regulator_desc *)rdev->desc; + + return regmap_update_bits(rdev->regmap, rdesc->suspend_config_reg, rdesc->suspend_enable_mask, 0); +} + +static int rtq2208_set_suspend_mode(struct regulator_dev *rdev, unsigned int mode) +{ + struct rtq2208_regulator_desc *rdesc = + (struct rtq2208_regulator_desc *)rdev->desc; + unsigned int val, shift; + + switch (mode) { + case REGULATOR_MODE_NORMAL: + val = RTQ2208_AUTO_MODE; + break; + case REGULATOR_MODE_FAST: + val = RTQ2208_FCCM; + break; + default: + return -EINVAL; + } + + shift = ffs(rdesc->suspend_mode_mask) - 1; + + return regmap_update_bits(rdev->regmap, rdesc->suspend_config_reg, + rdesc->suspend_mode_mask, val << shift); +} + +static int rtq2208_ldo_get_voltage(struct regulator_dev *rdev) +{ + struct rtq2208_regulator_desc *rdesc = + (struct rtq2208_regulator_desc *)rdev->desc; + + return rdesc->fixed_uV; +} + +static const struct regulator_ops rtq2208_regulator_buck_ops = { + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, + .list_voltage = regulator_list_voltage_linear_range, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_mode = rtq2208_set_mode, + .get_mode = rtq2208_get_mode, + .set_ramp_delay = rtq2208_set_ramp_delay, + .set_active_discharge = regulator_set_active_discharge_regmap, + .set_suspend_enable = rtq2208_set_suspend_enable, + .set_suspend_disable = rtq2208_set_suspend_disable, + .set_suspend_mode = rtq2208_set_suspend_mode, +}; + +static const struct regulator_ops rtq2208_regulator_ldo_ops = { + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, + .set_active_discharge = regulator_set_active_discharge_regmap, + .set_suspend_enable = rtq2208_set_suspend_enable, + .set_suspend_disable = rtq2208_set_suspend_disable, + .get_voltage = rtq2208_ldo_get_voltage, +}; + +static int rtq2208_of_parse_cb(struct device_node *np, + const struct regulator_desc *desc, + struct regulator_config *config) +{ + struct rtq2208_regulator_desc *rdesc = + (struct rtq2208_regulator_desc *)desc; + + if (desc->id != RTQ2208_LDO1 && desc->id != RTQ2208_LDO2) + return 0; + + /* ldo voltage depends on factory setting */ + return of_property_read_u32(np, "richtek,fixed-uV", &rdesc->fixed_uV); +} + +static unsigned int rtq2208_of_map_mode(unsigned int mode) +{ + switch (mode) { + case RTQ2208_AUTO_MODE: + return REGULATOR_MODE_NORMAL; + case RTQ2208_FCCM: + return REGULATOR_MODE_FAST; + default: + return REGULATOR_MODE_INVALID; + } +} + +static int rtq2208_init_irq_mask(struct rtq2208_rdev_map *rdev_map, unsigned int *buck_masks) +{ + unsigned char buck_clr_masks[5] = {0x33, 0x33, 0x33, 0x33, 0x33}, + sts_clr_masks[2] = {0xE7, 0xF7}, sts_masks[2] = {0xE6, 0xF6}; + int ret; + + /* write clear all buck irq once */ + ret = regmap_bulk_write(rdev_map->regmap, RTQ2208_REG_FLT_RECORDBUCK_CB, buck_clr_masks, 5); + if (ret) + return dev_err_probe(rdev_map->dev, ret, "Failed to clr buck irqs\n"); + + /* write clear general irq once */ + ret = regmap_bulk_write(rdev_map->regmap, RTQ2208_REG_GLOBAL_INT1, sts_clr_masks, 2); + if (ret) + return dev_err_probe(rdev_map->dev, ret, "Failed to clr general irqs\n"); + + /* unmask buck ov/uv irq */ + ret = regmap_bulk_write(rdev_map->regmap, RTQ2208_REG_FLT_MASKBUCK_CB, buck_masks, 5); + if (ret) + return dev_err_probe(rdev_map->dev, ret, "Failed to unmask buck irqs\n"); + + /* unmask needed general irq */ + return regmap_bulk_write(rdev_map->regmap, RTQ2208_REG_GLOBAL_INT1_MASK, sts_masks, 2); +} + +static irqreturn_t rtq2208_irq_handler(int irqno, void *devid) +{ + unsigned char buck_flags[RTQ2208_BUCK_NUM_IRQ_REGS], sts_flags[RTQ2208_STS_NUM_IRQ_REGS]; + int ret = 0, i, uv_bit, ov_bit; + struct rtq2208_rdev_map *rdev_map = devid; + struct regulator_dev *rdev; + + if (!rdev_map) + return IRQ_NONE; + + /* read irq event */ + ret = regmap_bulk_read(rdev_map->regmap, RTQ2208_REG_FLT_RECORDBUCK_CB, + buck_flags, ARRAY_SIZE(buck_flags)); + if (ret) + return IRQ_NONE; + + ret = regmap_bulk_read(rdev_map->regmap, RTQ2208_REG_GLOBAL_INT1, + sts_flags, ARRAY_SIZE(sts_flags)); + if (ret) + return IRQ_NONE; + + /* clear irq event */ + ret = regmap_bulk_write(rdev_map->regmap, RTQ2208_REG_FLT_RECORDBUCK_CB, + buck_flags, ARRAY_SIZE(buck_flags)); + if (ret) + return IRQ_NONE; + + ret = regmap_bulk_write(rdev_map->regmap, RTQ2208_REG_GLOBAL_INT1, + sts_flags, ARRAY_SIZE(sts_flags)); + if (ret) + return IRQ_NONE; + + for (i = 0; i < RTQ2208_LDO_MAX; i++) { + if (!rdev_map->rdev[i]) + continue; + + rdev = rdev_map->rdev[i]; + /* uv irq */ + uv_bit = (i & 1) ? 4 : 0; + if (buck_flags[i >> 1] & (1 << uv_bit)) + regulator_notifier_call_chain(rdev, + REGULATOR_EVENT_UNDER_VOLTAGE, NULL); + /* ov irq */ + ov_bit = uv_bit + 1; + if (buck_flags[i >> 1] & (1 << ov_bit)) + regulator_notifier_call_chain(rdev, + REGULATOR_EVENT_REGULATION_OUT, NULL); + + /* hd irq */ + if (sts_flags[1] & RTQ2208_HD_INT_MASK) + regulator_notifier_call_chain(rdev, + REGULATOR_EVENT_OVER_TEMP, NULL); + } + + return IRQ_HANDLED; +} + +#define RTQ2208_REGULATOR_INFO(_name, _base) \ +{ \ + .name = #_name, \ + .base = _base, \ +} +#define BUCK_RG_BASE(_id) RTQ2208_REG_BUCK_##_id##_CFG0 +#define BUCK_RG_SHIFT(_base, _shift) (_base + _shift) +#define LDO_RG_BASE(_id) RTQ2208_REG_LDO##_id##_CFG +#define LDO_RG_SHIFT(_base, _shift) (_base + _shift) +#define VSEL_SHIFT(_sel) (_sel ? 3 : 1) +#define MTP_SEL_MASK(_sel) RTQ2208_BUCK_EN_NR_MTP_SEL##_sel##_MASK + +static const struct linear_range rtq2208_vout_range[] = { + REGULATOR_LINEAR_RANGE(400000, 0, 180, 5000), + REGULATOR_LINEAR_RANGE(1310000, 181, 255, 10000), +}; + +static void rtq2208_init_regulator_desc(struct rtq2208_regulator_desc *rdesc, int mtp_sel, int idx) +{ + struct regulator_desc *desc; + static const struct { + char *name; + int base; + } regulator_info[] = { + RTQ2208_REGULATOR_INFO(buck-b, BUCK_RG_BASE(B)), + RTQ2208_REGULATOR_INFO(buck-c, BUCK_RG_BASE(C)), + RTQ2208_REGULATOR_INFO(buck-d, BUCK_RG_BASE(D)), + RTQ2208_REGULATOR_INFO(buck-a, BUCK_RG_BASE(A)), + RTQ2208_REGULATOR_INFO(buck-f, BUCK_RG_BASE(F)), + RTQ2208_REGULATOR_INFO(buck-g, BUCK_RG_BASE(G)), + RTQ2208_REGULATOR_INFO(buck-h, BUCK_RG_BASE(H)), + RTQ2208_REGULATOR_INFO(buck-e, BUCK_RG_BASE(E)), + RTQ2208_REGULATOR_INFO(ldo2, LDO_RG_BASE(2)), + RTQ2208_REGULATOR_INFO(ldo1, LDO_RG_BASE(1)), + }, *curr_info; + + curr_info = regulator_info + idx; + desc = &rdesc->desc; + desc->name = curr_info->name; + desc->of_match = of_match_ptr(curr_info->name); + desc->id = idx; + desc->owner = THIS_MODULE; + desc->type = REGULATOR_VOLTAGE; + desc->enable_mask = mtp_sel ? MTP_SEL_MASK(1) : MTP_SEL_MASK(0); + desc->active_discharge_on = RTQ2208_EN_DIS_MASK; + desc->active_discharge_off = 0; + desc->active_discharge_mask = RTQ2208_EN_DIS_MASK; + + rdesc->mode_mask = RTQ2208_BUCK_NRMODE_MASK; + + if (idx >= RTQ2208_BUCK_B && idx <= RTQ2208_BUCK_E) { + /* init buck desc */ + desc->enable_reg = BUCK_RG_SHIFT(curr_info->base, 2); + desc->ops = &rtq2208_regulator_buck_ops; + desc->vsel_reg = curr_info->base + VSEL_SHIFT(mtp_sel); + desc->vsel_mask = RTQ2208_BUCK_NR_MTP_SEL_MASK; + desc->n_voltages = RTQ2208_VOUT_MAXNUM; + desc->linear_ranges = rtq2208_vout_range; + desc->n_linear_ranges = ARRAY_SIZE(rtq2208_vout_range); + desc->ramp_reg = BUCK_RG_SHIFT(curr_info->base, 5); + desc->active_discharge_reg = curr_info->base; + desc->of_map_mode = rtq2208_of_map_mode; + + rdesc->mode_reg = BUCK_RG_SHIFT(curr_info->base, 2); + rdesc->suspend_config_reg = BUCK_RG_SHIFT(curr_info->base, 4); + rdesc->suspend_enable_mask = RTQ2208_BUCK_EN_STR_MASK; + rdesc->suspend_mode_mask = RTQ2208_BUCK_STRMODE_MASK; + } else { + /* init ldo desc */ + desc->enable_reg = curr_info->base; + desc->ops = &rtq2208_regulator_ldo_ops; + desc->n_voltages = 1; + desc->active_discharge_reg = LDO_RG_SHIFT(curr_info->base, 2); + desc->of_parse_cb = rtq2208_of_parse_cb; + + rdesc->suspend_config_reg = curr_info->base; + rdesc->suspend_enable_mask = RTQ2208_LDO_EN_STR_MASK; + } +} + +/** different slave address corresponds different used bucks + * slave address 0x10: BUCK[BCA FGE] + * slave address 0x20: BUCK[BC FGHE] + * slave address 0x40: BUCK[C G] + */ +static int rtq2208_regulator_check(int slave_addr, int *num, int *regulator_idx_table, unsigned int *buck_masks) +{ + static bool rtq2208_used_table[3][RTQ2208_LDO_MAX] = { + /* BUCK[BCA FGE], LDO[12] */ + {1, 1, 0, 1, 1, 1, 0, 1, 1, 1}, + /* BUCK[BC FGHE], LDO[12]*/ + {1, 1, 0, 0, 1, 1, 1, 1, 1, 1}, + /* BUCK[C G], LDO[12] */ + {0, 1, 0, 0, 0, 1, 0, 0, 1, 1}, + }; + int i, idx = ffs(slave_addr >> 4) - 1; + u8 mask; + + for (i = 0; i < RTQ2208_LDO_MAX; i++) { + if (!rtq2208_used_table[idx][i]) + continue; + + regulator_idx_table[(*num)++] = i; + + mask = RTQ2208_BUCK_MASK(4 * i, 4 * i + 1); + buck_masks[i >> 1] &= ~mask; + } + + return 0; +} + +static const struct regmap_config rtq2208_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 0xEF, +}; + +static int rtq2208_probe(struct i2c_client *i2c) +{ + struct device *dev = &i2c->dev; + struct regmap *regmap; + struct rtq2208_regulator_desc *rdesc; + struct regulator_dev *rdev; + struct regulator_config cfg; + struct rtq2208_rdev_map *rdev_map; + int i, ret = 0, idx, mtp_sel, n_regulator = 0; + unsigned int regulator_idx_table[RTQ2208_LDO_MAX], + buck_masks[RTQ2208_BUCK_NUM_IRQ_REGS] = {0x33, 0x33, 0x33, 0x33, 0x33}; + + rdev_map = devm_kzalloc(dev, sizeof(struct rtq2208_rdev_map), GFP_KERNEL); + if (!rdev_map) + return -ENOMEM; + + /* get mtp_sel0 or mtp_sel1 */ + mtp_sel = device_property_read_bool(dev, "richtek,mtp-sel"); + + regmap = devm_regmap_init_i2c(i2c, &rtq2208_regmap_config); + if (IS_ERR(regmap)) + return dev_err_probe(dev, PTR_ERR(regmap), "Failed to allocate regmap\n"); + + /* get needed regulator */ + ret = rtq2208_regulator_check(i2c->addr, &n_regulator, regulator_idx_table, buck_masks); + if (ret) + return dev_err_probe(dev, ret, "Failed to check used regulators\n"); + + rdev_map->regmap = regmap; + rdev_map->dev = dev; + + cfg.dev = dev; + + for (i = 0; i < n_regulator; i++) { + idx = regulator_idx_table[i]; + + rdesc = devm_kcalloc(dev, 1, sizeof(struct rtq2208_regulator_desc), GFP_KERNEL); + if (!rdesc) + return -ENOMEM; + + /* init regulator desc */ + rtq2208_init_regulator_desc(rdesc, mtp_sel, idx); + + /* regiser regulator */ + rdev = devm_regulator_register(dev, &rdesc->desc, &cfg); + if (IS_ERR(rdev)) + return PTR_ERR(rdev); + + rdev_map->rdev[idx] = rdev; + } + + /* init interrupt mask */ + ret = rtq2208_init_irq_mask(rdev_map, buck_masks); + if (ret) + return ret; + + /* register interrupt */ + ret = devm_request_threaded_irq(dev, i2c->irq, NULL, rtq2208_irq_handler, + IRQF_ONESHOT, dev_name(dev), rdev_map); + + return ret; +} + +static const struct of_device_id __maybe_unused rtq2208_device_tables[] = { + { .compatible = "richtek,rtq2208", }, + {} +}; +MODULE_DEVICE_TABLE(of, rtq2208_device_tables); + +static struct i2c_driver rtq2208_driver = { + .driver = { + .name = "rtq2208", + .of_match_table = rtq2208_device_tables, + }, + .probe_new = rtq2208_probe, +}; +module_i2c_driver(rtq2208_driver); + +MODULE_AUTHOR("Alina Yu "); +MODULE_DESCRIPTION("Richtek RTQ2208 Regulator Driver"); +MODULE_LICENSE("GPL v2");