From patchwork Tue Oct 20 09:56:48 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hsin-Hsiung Wang X-Patchwork-Id: 11846191 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 97E1614B7 for ; Tue, 20 Oct 2020 09:57:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 707E422242 for ; Tue, 20 Oct 2020 09:57:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="msBE7gkk" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404968AbgJTJ5h (ORCPT ); Tue, 20 Oct 2020 05:57:37 -0400 Received: from mailgw01.mediatek.com ([210.61.82.183]:47100 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S2404885AbgJTJ5g (ORCPT ); Tue, 20 Oct 2020 05:57:36 -0400 X-UUID: 44250b962f4d45b0aa08c71c3f33d26e-20201020 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=F8WnTljv3hNTWcc1qMKTEyBohllp3UNYpl8swfbVRfI=; b=msBE7gkkEU+CAXdvBuBpNki15RDzOt1omhs/KjRHOuMhoq11rkJqNI1Zp7j/H9eV/6MBdOZFqG6CKEqhaNsz0uY2EOzpgaeey/OroDfgT1rq5J85zAnShvMceXLetqBMpL085ZBZS2iH7GjfXIG68ku2IlXyqSW2TgjCrs/0Quo=; X-UUID: 44250b962f4d45b0aa08c71c3f33d26e-20201020 Received: from mtkcas06.mediatek.inc [(172.21.101.30)] by mailgw01.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.14 Build 0819 with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1910383176; Tue, 20 Oct 2020 17:57:26 +0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs05n2.mediatek.inc (172.21.101.140) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 20 Oct 2020 17:57:24 +0800 Received: from mtksdaap41.mediatek.inc (172.21.77.4) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 20 Oct 2020 17:57:25 +0800 From: Hsin-Hsiung Wang To: Liam Girdwood , Mark Brown , Rob Herring , Matthias Brugger , Stephen Boyd CC: , , , , , , Hsin-Hsiung Wang Subject: [PATCH v2 1/3] spmi: Add driver shutdown support Date: Tue, 20 Oct 2020 17:56:48 +0800 Message-ID: <1603187810-30481-2-git-send-email-hsin-hsiung.wang@mediatek.com> X-Mailer: git-send-email 2.6.4 In-Reply-To: <1603187810-30481-1-git-send-email-hsin-hsiung.wang@mediatek.com> References: <1603187810-30481-1-git-send-email-hsin-hsiung.wang@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add new shutdown() method. Use it in the standard driver model style. Signed-off-by: Hsin-Hsiung Wang --- drivers/spmi/spmi.c | 9 +++++++++ include/linux/spmi.h | 1 + 2 files changed, 10 insertions(+) diff --git a/drivers/spmi/spmi.c b/drivers/spmi/spmi.c index c16b60f645a4..161a48ca4acc 100644 --- a/drivers/spmi/spmi.c +++ b/drivers/spmi/spmi.c @@ -357,6 +357,14 @@ static int spmi_drv_remove(struct device *dev) return 0; } +static void spmi_drv_shutdown(struct device *dev) +{ + const struct spmi_driver *sdrv = to_spmi_driver(dev->driver); + + if (sdrv && sdrv->shutdown) + sdrv->shutdown(to_spmi_device(dev)); +} + static int spmi_drv_uevent(struct device *dev, struct kobj_uevent_env *env) { int ret; @@ -373,6 +381,7 @@ static struct bus_type spmi_bus_type = { .match = spmi_device_match, .probe = spmi_drv_probe, .remove = spmi_drv_remove, + .shutdown = spmi_drv_shutdown, .uevent = spmi_drv_uevent, }; diff --git a/include/linux/spmi.h b/include/linux/spmi.h index 394a3f68bad5..729bcbf9f5ad 100644 --- a/include/linux/spmi.h +++ b/include/linux/spmi.h @@ -138,6 +138,7 @@ struct spmi_driver { struct device_driver driver; int (*probe)(struct spmi_device *sdev); void (*remove)(struct spmi_device *sdev); + void (*shutdown)(struct spmi_device *sdev); }; static inline struct spmi_driver *to_spmi_driver(struct device_driver *d) From patchwork Tue Oct 20 09:56:49 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hsin-Hsiung Wang X-Patchwork-Id: 11846193 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 88A8C14B7 for ; Tue, 20 Oct 2020 09:57:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6301922242 for ; Tue, 20 Oct 2020 09:57:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="KoEaCBJt" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404940AbgJTJ5e (ORCPT ); Tue, 20 Oct 2020 05:57:34 -0400 Received: from mailgw02.mediatek.com ([210.61.82.184]:36258 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S2404885AbgJTJ5d (ORCPT ); Tue, 20 Oct 2020 05:57:33 -0400 X-UUID: 99f8cf23af424c55bc3abcdd08228555-20201020 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=qfBpt2yRRSl7Y0IIx6HSJ15aOq766nROGum9UitxWik=; b=KoEaCBJt/RQncXupvinf8F9qXIEy6KAEm7eC0FW5e75YlBCQAWAp1OQW1nSBVWdeZrkYBW/8g62am8S+//QBW3t30xVQnL8A2FIhLF3eFuVl/QyBBrhzUbxRgJjH2cQ1kImjYlFalzhQM+sgOLuiHxvt6frfU73wkktjeIorABM=; X-UUID: 99f8cf23af424c55bc3abcdd08228555-20201020 Received: from mtkcas06.mediatek.inc [(172.21.101.30)] by mailgw02.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.14 Build 0819 with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 36604476; Tue, 20 Oct 2020 17:57:26 +0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs05n1.mediatek.inc (172.21.101.15) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 20 Oct 2020 17:57:24 +0800 Received: from mtksdaap41.mediatek.inc (172.21.77.4) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 20 Oct 2020 17:57:26 +0800 From: Hsin-Hsiung Wang To: Liam Girdwood , Mark Brown , Rob Herring , Matthias Brugger , Stephen Boyd CC: , , , , , , Hsin-Hsiung Wang Subject: [PATCH v2 2/3] dt-bindings: regulator: document binding for MT6315 regulator Date: Tue, 20 Oct 2020 17:56:49 +0800 Message-ID: <1603187810-30481-3-git-send-email-hsin-hsiung.wang@mediatek.com> X-Mailer: git-send-email 2.6.4 In-Reply-To: <1603187810-30481-1-git-send-email-hsin-hsiung.wang@mediatek.com> References: <1603187810-30481-1-git-send-email-hsin-hsiung.wang@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add device tree binding information for MT6315 regulator driver. Example bindings for MT6315 are added. Signed-off-by: Hsin-Hsiung Wang --- .../regulator/mtk,mt6315-regulator.yaml | 88 +++++++++++++++++++ include/dt-bindings/regulator/mtk,mt6315.h | 17 ++++ 2 files changed, 105 insertions(+) create mode 100644 Documentation/devicetree/bindings/regulator/mtk,mt6315-regulator.yaml create mode 100644 include/dt-bindings/regulator/mtk,mt6315.h diff --git a/Documentation/devicetree/bindings/regulator/mtk,mt6315-regulator.yaml b/Documentation/devicetree/bindings/regulator/mtk,mt6315-regulator.yaml new file mode 100644 index 000000000000..457606800d5b --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/mtk,mt6315-regulator.yaml @@ -0,0 +1,88 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/regulator/mtk,mt6315-regulator.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Mediatek MT6315 Regulator + +maintainers: + - Hsin-Hsiung Wang + +description: | + The MT6315 is a power management IC (PMIC) configurable with SPMI. + that contains 4 BUCKs output which can combine with each other + by different efuse settings. + +allOf: + - $ref: "regulator.yaml#" + +properties: + $nodename: + pattern: "mt6315@[0-9]" + compatible: + enum: + - mediatek,mt6315_3-regulator + - mediatek,mt6315_6-regulator + - mediatek,mt6315_7-regulator + + reg: + maxItems: 1 + + regulators: + type: object + description: List of regulators and its properties + + patternProperties: + "^vbuck[1-4]$": + type: object + + properties: + regulator-name: + pattern: "^vbuck[1-4]$" + description: + should be "vbuck1", ..., "vbuck4" + + mtk,combined-regulator: + $ref: "/schemas/types.yaml#/definitions/uint32-array" + description: | + defines other bucks combined with this buck, must contain the following + values MT6315_VBUCK1, MT6315_VBUCK2, MT6315_VBUCK3, MT6315_VBUCK4 + + unevaluatedProperties: false + +required: + - compatible + - reg + - regulators + +additionalProperties: false + +examples: + - | + /* This example shows that buck2 and buck4 are combined into buck1. */ + #include + + mt6315@6 { + compatible = "mediatek,mt6315_6-regulator"; + reg = <0x6 0 0xb 1>; + + regulators { + vbuck1 { + regulator-compatible = "vbuck1"; + regulator-min-microvolt = <300000>; + regulator-max-microvolt = <1193750>; + regulator-enable-ramp-delay = <256>; + regulator-allowed-modes = <0 1 2 4>; + mtk,combined-regulator = ; + }; + + vbuck3 { + regulator-compatible = "vbuck3"; + regulator-min-microvolt = <300000>; + regulator-max-microvolt = <1193750>; + regulator-enable-ramp-delay = <256>; + regulator-allowed-modes = <0 1 2 4>; + }; + }; + }; diff --git a/include/dt-bindings/regulator/mtk,mt6315.h b/include/dt-bindings/regulator/mtk,mt6315.h new file mode 100644 index 000000000000..6ed9b2b121db --- /dev/null +++ b/include/dt-bindings/regulator/mtk,mt6315.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2020 MediaTek Inc. + * Author: Hsin-Hsiung Wang + */ + +#ifndef _DT_BINDINGS_REGULATOR_MTK_MT6315_H +#define _DT_BINDINGS_REGULATOR_MTK_MT6315_H + +/* Regulator ID */ +#define MT6315_VBUCK1 1 +#define MT6315_VBUCK2 2 +#define MT6315_VBUCK3 3 +#define MT6315_VBUCK4 4 +#define MT6315_VBUCK_MAX 5 + +#endif /* _DT_BINDINGS_REGULATOR_MTK_MT6315_H */ From patchwork Tue Oct 20 09:56:50 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hsin-Hsiung Wang X-Patchwork-Id: 11846197 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 6D5F214B7 for ; Tue, 20 Oct 2020 09:57:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3B9CF2224E for ; Tue, 20 Oct 2020 09:57:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="UB7N937G" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2405063AbgJTJ5o (ORCPT ); Tue, 20 Oct 2020 05:57:44 -0400 Received: from mailgw01.mediatek.com ([210.61.82.183]:47107 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S2404967AbgJTJ5n (ORCPT ); Tue, 20 Oct 2020 05:57:43 -0400 X-UUID: 1fc7779bd0474af58c00c2c52bdd9cf4-20201020 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=bltWi3855DIox0anjkG4Q5R7NNa5/AdzdcOAfel+uac=; b=UB7N937GSXVwx1telZWrelCX5pELVxAOilAB1HyhQKUK2tAZbo1uryB9AzPxi9psMrdjbcNbxfleNQLPZrxZVZRQqlDWnMc08kuAw68c3n1nLgm2snx9CvGINJhaOf46s9B+B95/S/XdI70aoX8/neqro0oHquV8lrN5MRTo5Q4=; X-UUID: 1fc7779bd0474af58c00c2c52bdd9cf4-20201020 Received: from mtkcas07.mediatek.inc [(172.21.101.84)] by mailgw01.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.14 Build 0819 with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1835411858; Tue, 20 Oct 2020 17:57:27 +0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs07n2.mediatek.inc (172.21.101.141) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 20 Oct 2020 17:57:25 +0800 Received: from mtksdaap41.mediatek.inc (172.21.77.4) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 20 Oct 2020 17:57:26 +0800 From: Hsin-Hsiung Wang To: Liam Girdwood , Mark Brown , Rob Herring , Matthias Brugger , Stephen Boyd CC: , , , , , , Hsin-Hsiung Wang Subject: [PATCH v2 3/3] regulator: mt6315: Add support for MT6315 regulator Date: Tue, 20 Oct 2020 17:56:50 +0800 Message-ID: <1603187810-30481-4-git-send-email-hsin-hsiung.wang@mediatek.com> X-Mailer: git-send-email 2.6.4 In-Reply-To: <1603187810-30481-1-git-send-email-hsin-hsiung.wang@mediatek.com> References: <1603187810-30481-1-git-send-email-hsin-hsiung.wang@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org The MT6315 is a regulator found on boards based on MediaTek MT8192 and probably other SoCs. It connects as a slave to SoC using SPMI. Signed-off-by: Hsin-Hsiung Wang --- drivers/regulator/Kconfig | 10 + drivers/regulator/Makefile | 1 + drivers/regulator/mt6315-regulator.c | 364 +++++++++++++++++++++ include/linux/regulator/mt6315-regulator.h | 37 +++ 4 files changed, 412 insertions(+) create mode 100644 drivers/regulator/mt6315-regulator.c create mode 100644 include/linux/regulator/mt6315-regulator.h diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index de17ef7e18f0..59544918034e 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -693,6 +693,16 @@ config REGULATOR_MT6311 This driver supports the control of different power rails of device through regulator interface. +config REGULATOR_MT6315 + tristate "MediaTek MT6315 PMIC" + depends on SPMI + select REGMAP_SPMI + help + Say y here to select this option to enable the power regulator of + MediaTek MT6315 PMIC. + This driver supports the control of different power rails of device + through regulator interface. + config REGULATOR_MT6323 tristate "MediaTek MT6323 PMIC" depends on MFD_MT6397 diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index d8d3ecf526a8..5488e563c60a 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -86,6 +86,7 @@ obj-$(CONFIG_REGULATOR_MP8859) += mp8859.o obj-$(CONFIG_REGULATOR_MP886X) += mp886x.o obj-$(CONFIG_REGULATOR_MPQ7920) += mpq7920.o obj-$(CONFIG_REGULATOR_MT6311) += mt6311-regulator.o +obj-$(CONFIG_REGULATOR_MT6315) += mt6315-regulator.o obj-$(CONFIG_REGULATOR_MT6323) += mt6323-regulator.o obj-$(CONFIG_REGULATOR_MT6358) += mt6358-regulator.o obj-$(CONFIG_REGULATOR_MT6380) += mt6380-regulator.o diff --git a/drivers/regulator/mt6315-regulator.c b/drivers/regulator/mt6315-regulator.c new file mode 100644 index 000000000000..8e3accb2e36f --- /dev/null +++ b/drivers/regulator/mt6315-regulator.c @@ -0,0 +1,364 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright (c) 2020 MediaTek Inc. + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define MT6315_REG_WIDTH 8 + +#define MT6315_BUCK_MODE_AUTO 0 +#define MT6315_BUCK_MODE_FORCE_PWM 1 +#define MT6315_BUCK_MODE_LP 2 + +struct mt6315_regulator_info { + struct regulator_desc desc; + u32 da_vsel_reg; + u32 da_reg; + u32 lp_mode_reg; + u32 lp_mode_mask; + u32 lp_mode_shift; + u32 modeset_reg; + u32 qi; +}; + +struct mt_regulator_init_data { + const struct mt6315_regulator_info *regulator_info; + u32 modeset_mask[MT6315_VBUCK_MAX]; +}; + +struct mt6315_chip { + struct device *dev; + struct regmap *regmap; +}; + +#define MT_BUCK(_name, _bid, _vsel) \ +[_bid] = { \ + .desc = { \ + .name = _name, \ + .of_match = of_match_ptr(_name), \ + .regulators_node = "regulators", \ + .ops = &mt6315_volt_range_ops, \ + .type = REGULATOR_VOLTAGE, \ + .id = _bid, \ + .owner = THIS_MODULE, \ + .n_voltages = 0xbf, \ + .linear_ranges = mt_volt_range1, \ + .n_linear_ranges = ARRAY_SIZE(mt_volt_range1), \ + .vsel_reg = _vsel, \ + .vsel_mask = 0xff, \ + .enable_reg = MT6315_BUCK_TOP_CON0, \ + .enable_mask = BIT(_bid - 1), \ + .of_map_mode = mt6315_map_mode, \ + }, \ + .da_vsel_reg = _bid##_DBG0, \ + .da_reg = _bid##_DBG4, \ + .lp_mode_reg = MT6315_BUCK_TOP_CON1, \ + .lp_mode_mask = BIT(_bid - 1), \ + .lp_mode_shift = _bid - 1, \ + .modeset_reg = MT6315_BUCK_TOP_4PHASE_ANA_CON42, \ + .qi = BIT(0), \ +} + +static const struct linear_range mt_volt_range1[] = { + REGULATOR_LINEAR_RANGE(0, 0, 0xbf, 6250), +}; + +static unsigned int mt6315_map_mode(u32 mode) +{ + switch (mode) { + case MT6315_BUCK_MODE_AUTO: + return REGULATOR_MODE_NORMAL; + case MT6315_BUCK_MODE_FORCE_PWM: + return REGULATOR_MODE_FAST; + case MT6315_BUCK_MODE_LP: + return REGULATOR_MODE_IDLE; + default: + return -EINVAL; + } +} + +static int mt6315_regulator_get_voltage_sel(struct regulator_dev *rdev) +{ + struct mt_regulator_init_data *init = rdev_get_drvdata(rdev); + const struct mt6315_regulator_info *info; + int ret, reg_addr, reg_val = 0, reg_en = 0; + + info = &init->regulator_info[rdev_get_id(rdev)]; + ret = regmap_read(rdev->regmap, info->da_reg, ®_en); + if (ret != 0) { + dev_notice(&rdev->dev, "Failed to get enable reg: %d\n", ret); + return ret; + } + + if (reg_en & info->qi) + reg_addr = info->da_vsel_reg; + else + reg_addr = rdev->desc->vsel_reg; + + ret = regmap_read(rdev->regmap, reg_addr, ®_val); + if (ret != 0) { + dev_notice(&rdev->dev, "Failed to get voltage: %d\n", ret); + return ret; + } + + ret = reg_val & rdev->desc->vsel_mask; + return ret; +} + +static unsigned int mt6315_regulator_get_mode(struct regulator_dev *rdev) +{ + struct mt_regulator_init_data *init = rdev_get_drvdata(rdev); + const struct mt6315_regulator_info *info; + int ret = 0, regval = 0; + u32 modeset_mask; + + info = &init->regulator_info[rdev_get_id(rdev)]; + modeset_mask = init->modeset_mask[rdev_get_id(rdev)]; + ret = regmap_read(rdev->regmap, info->modeset_reg, ®val); + if (ret != 0) { + dev_notice(&rdev->dev, "Failed to get mode: %d\n", ret); + return ret; + } + + if ((regval & modeset_mask) == modeset_mask) + return REGULATOR_MODE_FAST; + + ret = regmap_read(rdev->regmap, info->lp_mode_reg, ®val); + if (ret != 0) { + dev_notice(&rdev->dev, "Failed to get lp mode: %d\n", ret); + return ret; + } + + if (regval & info->lp_mode_mask) + return REGULATOR_MODE_IDLE; + else + return REGULATOR_MODE_NORMAL; +} + +static int mt6315_regulator_set_mode(struct regulator_dev *rdev, + u32 mode) +{ + struct mt_regulator_init_data *init = rdev_get_drvdata(rdev); + const struct mt6315_regulator_info *info; + int ret = 0, val, curr_mode; + u32 modeset_mask; + + info = &init->regulator_info[rdev_get_id(rdev)]; + modeset_mask = init->modeset_mask[rdev_get_id(rdev)]; + curr_mode = mt6315_regulator_get_mode(rdev); + switch (mode) { + case REGULATOR_MODE_FAST: + ret = regmap_update_bits(rdev->regmap, + info->modeset_reg, + modeset_mask, + modeset_mask); + break; + case REGULATOR_MODE_NORMAL: + if (curr_mode == REGULATOR_MODE_FAST) { + ret = regmap_update_bits(rdev->regmap, + info->modeset_reg, + modeset_mask, + 0); + } else if (curr_mode == REGULATOR_MODE_IDLE) { + ret = regmap_update_bits(rdev->regmap, + info->lp_mode_reg, + info->lp_mode_mask, + 0); + usleep_range(100, 110); + } + break; + case REGULATOR_MODE_IDLE: + val = MT6315_BUCK_MODE_LP >> 1; + val <<= info->lp_mode_shift; + ret = regmap_update_bits(rdev->regmap, + info->lp_mode_reg, + info->lp_mode_mask, + val); + break; + default: + ret = -EINVAL; + goto err_mode; + } + +err_mode: + if (ret != 0) { + dev_notice(&rdev->dev, "Failed to set mode: %d\n", ret); + return ret; + } + + return 0; +} + +static int mt6315_get_status(struct regulator_dev *rdev) +{ + struct mt_regulator_init_data *init = rdev_get_drvdata(rdev); + const struct mt6315_regulator_info *info; + int ret = 0; + u32 regval = 0; + + info = &init->regulator_info[rdev_get_id(rdev)]; + ret = regmap_read(rdev->regmap, info->da_reg, ®val); + if (ret != 0) { + dev_notice(&rdev->dev, "Failed to get enable reg: %d\n", ret); + return ret; + } + + return (regval & info->qi) ? REGULATOR_STATUS_ON : REGULATOR_STATUS_OFF; +} + +static const struct regulator_ops mt6315_volt_range_ops = { + .list_voltage = regulator_list_voltage_linear_range, + .map_voltage = regulator_map_voltage_linear_range, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .get_voltage_sel = mt6315_regulator_get_voltage_sel, + .set_voltage_time_sel = regulator_set_voltage_time_sel, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, + .get_status = mt6315_get_status, + .set_mode = mt6315_regulator_set_mode, + .get_mode = mt6315_regulator_get_mode, +}; + +static const struct mt6315_regulator_info mt6315_regulators[MT6315_VBUCK_MAX] = { + MT_BUCK("vbuck1", MT6315_VBUCK1, MT6315_BUCK_TOP_ELR0), + MT_BUCK("vbuck2", MT6315_VBUCK2, MT6315_BUCK_TOP_ELR2), + MT_BUCK("vbuck3", MT6315_VBUCK3, MT6315_BUCK_TOP_ELR4), + MT_BUCK("vbuck4", MT6315_VBUCK4, MT6315_BUCK_TOP_ELR6), +}; + +static const struct regmap_config mt6315_regmap_config = { + .reg_bits = 16, + .val_bits = 8, + .max_register = 0x16d0, + .fast_io = true, +}; + +static const struct of_device_id mt6315_of_match[] = { + { + .compatible = "mediatek,mt6315_3-regulator", + }, { + .compatible = "mediatek,mt6315_6-regulator", + }, { + .compatible = "mediatek,mt6315_7-regulator", + }, { + /* sentinel */ + }, +}; +MODULE_DEVICE_TABLE(of, mt6315_of_match); + +static void mt6315_parsing_dt(struct regulator_dev *rdev, u32 *arr) +{ + struct device_node *np; + struct mt_regulator_init_data *init = rdev_get_drvdata(rdev); + u32 buck_id, *modeset; + int i, icount; + + np = rdev->dev.of_node; + if (!np) + return; + + icount = of_property_count_elems_of_size(np, "mtk,combined-regulator", sizeof(u32)); + if (icount <= 0) + return; + + modeset = &init->modeset_mask[rdev_get_id(rdev)]; + for (i = 0; i < icount; i++) { + if (of_property_read_u32_index(np, "mtk,combined-regulator", i, &buck_id)) + return; + + if (buck_id < MT6315_VBUCK_MAX) { + /* white list */ + *(arr + buck_id) = 1; + /* add modeset bit of combined-regulator */ + *modeset += BIT(buck_id - 1); + } + } +} + +static int mt6315_regulator_probe(struct spmi_device *pdev) +{ + struct device *dev = &pdev->dev; + struct regmap *regmap; + struct mt6315_chip *chip; + struct mt_regulator_init_data *init_data; + struct regulator_config config = {}; + struct regulator_dev *rdev; + int i; + u32 mt6315_dt_list[MT6315_VBUCK_MAX] = {0}; + + regmap = devm_regmap_init_spmi_ext(pdev, &mt6315_regmap_config); + if (!regmap) + return -ENODEV; + + chip = devm_kzalloc(dev, sizeof(struct mt6315_chip), GFP_KERNEL); + if (!chip) + return -ENOMEM; + + init_data = devm_kzalloc(dev, sizeof(struct mt_regulator_init_data), GFP_KERNEL); + if (!init_data) + return -ENOMEM; + + chip->dev = dev; + chip->regmap = regmap; + dev_set_drvdata(dev, chip); + + config.dev = dev; + config.regmap = regmap; + init_data->regulator_info = mt6315_regulators; + for (i = MT6315_VBUCK1; i < MT6315_VBUCK_MAX; i++) { + if (mt6315_dt_list[i]) + continue; + + init_data->modeset_mask[i] = 1 << (i - 1); + config.driver_data = init_data; + rdev = devm_regulator_register(dev, &mt6315_regulators[i].desc, &config); + if (IS_ERR(rdev)) { + dev_notice(dev, "Failed to register %s\n", mt6315_regulators[i].desc.name); + continue; + } + mt6315_parsing_dt(rdev, mt6315_dt_list); + } + return 0; +} + +static void mt6315_regulator_shutdown(struct spmi_device *pdev) +{ + struct mt6315_chip *chip = dev_get_drvdata(&pdev->dev); + int ret = 0; + + ret |= regmap_write(chip->regmap, MT6315_TOP_TMA_KEY_H, PROTECTION_KEY_H); + ret |= regmap_write(chip->regmap, MT6315_TOP_TMA_KEY, PROTECTION_KEY); + ret |= regmap_update_bits(chip->regmap, MT6315_TOP2_ELR7, 1, 1); + ret |= regmap_write(chip->regmap, MT6315_TOP_TMA_KEY, 0); + ret |= regmap_write(chip->regmap, MT6315_TOP_TMA_KEY_H, 0); + if (ret < 0) + dev_notice(&pdev->dev, "[%#x] Failed to enable power off sequence. %d\n", + pdev->usid, ret); +} + +static struct spmi_driver mt6315_regulator_driver = { + .driver = { + .name = "mt6315-regulator", + .of_match_table = mt6315_of_match, + }, + .probe = mt6315_regulator_probe, + .shutdown = mt6315_regulator_shutdown, +}; + +module_spmi_driver(mt6315_regulator_driver); + +MODULE_AUTHOR("Hsin-Hsiung Wang "); +MODULE_DESCRIPTION("Regulator Driver for MediaTek MT6315 PMIC"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/regulator/mt6315-regulator.h b/include/linux/regulator/mt6315-regulator.h new file mode 100644 index 000000000000..4b3bd172cba1 --- /dev/null +++ b/include/linux/regulator/mt6315-regulator.h @@ -0,0 +1,37 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2020 MediaTek Inc. + */ + +#ifndef __LINUX_REGULATOR_MT6315_H +#define __LINUX_REGULATOR_MT6315_H + +#define MT6315_SLAVE_ID_3 3 +#define MT6315_SLAVE_ID_6 6 +#define MT6315_SLAVE_ID_7 7 + +/* Register */ +#define MT6315_SWCID_H 0xb +#define MT6315_TOP2_ELR7 0x139 +#define MT6315_TOP_TMA_KEY 0x39f +#define MT6315_TOP_TMA_KEY_H 0x3a0 +#define MT6315_BUCK_TOP_CON0 0x1440 +#define MT6315_BUCK_TOP_CON1 0x1443 +#define MT6315_BUCK_TOP_ELR0 0x1449 +#define MT6315_BUCK_TOP_ELR2 0x144b +#define MT6315_BUCK_TOP_ELR4 0x144d +#define MT6315_BUCK_TOP_ELR6 0x144f +#define MT6315_VBUCK1_DBG0 0x1499 +#define MT6315_VBUCK1_DBG4 0x149d +#define MT6315_VBUCK2_DBG0 0x1519 +#define MT6315_VBUCK2_DBG4 0x151d +#define MT6315_VBUCK3_DBG0 0x1599 +#define MT6315_VBUCK3_DBG4 0x159d +#define MT6315_VBUCK4_DBG0 0x1619 +#define MT6315_VBUCK4_DBG4 0x161d +#define MT6315_BUCK_TOP_4PHASE_ANA_CON42 0x16b1 + +#define PROTECTION_KEY_H 0x9C +#define PROTECTION_KEY 0xEA + +#endif /* __LINUX_REGULATOR_MT6315_H */