From patchwork Mon Aug 3 08:57:25 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: 11697623 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 536D2913 for ; Mon, 3 Aug 2020 08:58:00 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2D09F2070A for ; Mon, 3 Aug 2020 08:58:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="I/LZEyOj"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="GEKOq4tq" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2D09F2070A Authentication-Results: mail.kernel.org; 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Mon, 03 Aug 2020 00:57:46 -0800 Received: from mtkmbs05n2.mediatek.inc (172.21.101.140) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 3 Aug 2020 01:57:37 -0700 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; Mon, 3 Aug 2020 16:57:35 +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; Mon, 3 Aug 2020 16:57:35 +0800 From: Hsin-Hsiung Wang To: Mark Brown , Rob Herring , Matthias Brugger Subject: [PATCH 1/3] spmi: Add driver shutdown support Date: Mon, 3 Aug 2020 16:57:25 +0800 Message-ID: <1596445047-2975-2-git-send-email-hsin-hsiung.wang@mediatek.com> X-Mailer: git-send-email 2.6.4 In-Reply-To: <1596445047-2975-1-git-send-email-hsin-hsiung.wang@mediatek.com> References: <1596445047-2975-1-git-send-email-hsin-hsiung.wang@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200803_045753_705631_3CBDFE93 X-CRM114-Status: GOOD ( 16.32 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, srv_heupstream@mediatek.com, Stephen Boyd , linux-arm-msm@vger.kernel.org, Liam Girdwood , linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, Hsin-Hsiung Wang , linux-arm-kernel@lists.infradead.org Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org Add new shutdown() method. Use it in the standard driver model style. Signed-off-by: Hsin-Hsiung Wang --- drivers/spmi/spmi.c | 12 ++++++++++++ drivers/spmi/spmi.c | 12 ++++++++++++ include/linux/spmi.h | 1 + 2 files changed, 13 insertions(+) diff --git a/drivers/spmi/spmi.c b/drivers/spmi/spmi.c index c16b60f..5fde024 100644 --- a/drivers/spmi/spmi.c +++ b/drivers/spmi/spmi.c @@ -357,6 +357,17 @@ 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) + return; + + + if (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 +384,7 @@ static struct bus_type spmi_bus_type = { @@ -373,6 +384,7 @@ 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 394a3f6..729bcbf 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 Mon Aug 3 08:57:26 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: 11697617 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 B194514B7 for ; Mon, 3 Aug 2020 08:57:51 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8A5F920719 for ; Mon, 3 Aug 2020 08:57:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="niESIbie"; 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Mon, 03 Aug 2020 00:57:33 -0800 Received: from MTKMBS07N2.mediatek.inc (172.21.101.141) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 3 Aug 2020 01:57:38 -0700 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; Mon, 3 Aug 2020 16:57:35 +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; Mon, 3 Aug 2020 16:57:35 +0800 From: Hsin-Hsiung Wang To: Mark Brown , Rob Herring , Matthias Brugger Subject: [PATCH 2/3] regulator: bindings: Add document for MT6315 regulator Date: Mon, 3 Aug 2020 16:57:26 +0800 Message-ID: <1596445047-2975-3-git-send-email-hsin-hsiung.wang@mediatek.com> X-Mailer: git-send-email 2.6.4 In-Reply-To: <1596445047-2975-1-git-send-email-hsin-hsiung.wang@mediatek.com> References: <1596445047-2975-1-git-send-email-hsin-hsiung.wang@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200803_045745_737329_466C9461 X-CRM114-Status: GOOD ( 14.69 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, srv_heupstream@mediatek.com, Stephen Boyd , linux-arm-msm@vger.kernel.org, Liam Girdwood , linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, Hsin-Hsiung Wang , linux-arm-kernel@lists.infradead.org Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org Add device tree binding information for mt6315 regulator driver. Example bindings for mt6315 are added. Signed-off-by: Hsin-Hsiung Wang --- .../bindings/regulator/mt6315-regulator.txt | 45 ++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 Documentation/devicetree/bindings/regulator/mt6315-regulator.txt diff --git a/Documentation/devicetree/bindings/regulator/mt6315-regulator.txt b/Documentation/devicetree/bindings/regulator/mt6315-regulator.txt new file mode 100644 index 0000000..1c14537 --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/mt6315-regulator.txt @@ -0,0 +1,45 @@ +Mediatek MT6315 Regulator + +Required properties: +- compatible: Must be one of the following. + "mediatek,mt6315_3-regulator" + "mediatek,mt6315_6-regulator" + "mediatek,mt6315_7-regulator" +- reg: SPMI slave id. +- regulators: List of regulators provided by this controller. + The definition for each of these nodes is defined using the standard binding + for regulators at Documentation/devicetree/bindings/regulator/regulator.txt. + +The valid names for regulators are: +BUCK: + vbuck1, vbuck3, vbuck4 + +Example: + mt6315_3: mt6315@3 { + compatible = "mediatek,mt6315_3-regulator"; + reg = <0x3 0 0xb 1>; + + mt6315_3_vbuck1: vbuck1 { + regulator-compatible = "vbuck1"; + regulator-min-microvolt = <300000>; + regulator-max-microvolt = <1193750>; + regulator-enable-ramp-delay = <256>; + regulator-allowed-modes = <0 1 2 4>; + }; + + mt6315_3_vbuck3: vbuck3 { + regulator-compatible = "vbuck3"; + regulator-min-microvolt = <300000>; + regulator-max-microvolt = <1193750>; + regulator-enable-ramp-delay = <256>; + regulator-allowed-modes = <0 1 2 4>; + }; + + mt6315_3_vbuck3: vbuck3 { + regulator-compatible = "vbuck3"; + regulator-min-microvolt = <300000>; + regulator-max-microvolt = <1193750>; + regulator-enable-ramp-delay = <256>; + regulator-allowed-modes = <0 1 2 4>; + }; + }; From patchwork Mon Aug 3 08:57:27 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: 11697621 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 385C9913 for ; 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Mon, 3 Aug 2020 16:57:35 +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; Mon, 3 Aug 2020 16:57:35 +0800 From: Hsin-Hsiung Wang To: Mark Brown , Rob Herring , Matthias Brugger Subject: [PATCH 3/3] regulator: mt6315: Add support for MT6315 regulator Date: Mon, 3 Aug 2020 16:57:27 +0800 Message-ID: <1596445047-2975-4-git-send-email-hsin-hsiung.wang@mediatek.com> X-Mailer: git-send-email 2.6.4 In-Reply-To: <1596445047-2975-1-git-send-email-hsin-hsiung.wang@mediatek.com> References: <1596445047-2975-1-git-send-email-hsin-hsiung.wang@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200803_045747_211596_95023A40 X-CRM114-Status: GOOD ( 26.13 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, srv_heupstream@mediatek.com, Stephen Boyd , linux-arm-msm@vger.kernel.org, Liam Girdwood , linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, Hsin-Hsiung Wang , linux-arm-kernel@lists.infradead.org Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.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 | 367 +++++++++++++++++++++++++++++ include/linux/regulator/mt6315-regulator.h | 45 ++++ 4 files changed, 423 insertions(+) create mode 100644 drivers/regulator/mt6315-regulator.c create mode 100644 include/linux/regulator/mt6315-regulator.h create mode 100644 include/linux/regulator/mt6315-regulator.h diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index 8f677f5..5b8f28f7 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -673,6 +673,16 @@ 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 e8f1633..742067e 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -84,6 +84,7 @@ 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 0000000..a855e70 --- /dev/null +++ b/drivers/regulator/mt6315-regulator.c @@ -0,0 +1,367 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright (c) 2020 MediaTek Inc. + +#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_NORMAL 0 +#define MT6315_BUCK_MODE_LP 2 + +struct mt6315_regulator_info { + struct regulator_desc desc; + u32 da_vsel_reg; + u32 da_reg; + u32 qi; + u32 modeset_reg; + u32 modeset_mask; + u32 lp_mode_reg; + u32 lp_mode_mask; + u32 lp_mode_shift; +}; +}; + +struct mt6315_init_data { +struct mt6315_init_data { + u32 id; + u32 size; + u32 buck1_modeset_mask; +}; + + +struct mt6315_chip { + struct device *dev; + struct regmap *regmap; + u32 slave_id; +}; + +#define MT_BUCK(match, _name, volt_ranges, _bid, _vsel, _modeset_mask) \ +[MT6315_ID_##_name] = { \ + .desc = { \ + .name = #_name, \ + .of_match = of_match_ptr(match), \ + .ops = &mt6315_volt_range_ops, \ + .type = REGULATOR_VOLTAGE, \ + .id = MT6315_ID_##_name, \ + .owner = THIS_MODULE, \ + .n_voltages = 0xbf, \ + .linear_ranges = volt_ranges, \ + .n_linear_ranges = ARRAY_SIZE(volt_ranges), \ + .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 = MT6315_BUCK_VBUCK##_bid##_DBG0, \ + .da_reg = MT6315_BUCK_VBUCK##_bid##_DBG4, \ + .qi = BIT(0), \ + .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, \ + .modeset_mask = _modeset_mask, \ +} + +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 mt6315_regulator_info *info = rdev_get_drvdata(rdev); + int ret = 0, reg_addr = 0, reg_val = 0, reg_en = 0; + + 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_err(&rdev->dev, + "Failed to get mt6315 regulator 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 mt6315_regulator_info *info = rdev_get_drvdata(rdev); + struct mt6315_init_data *pdata = dev_get_drvdata(rdev->dev.parent); + int ret = 0, regval = 0; + u32 modeset_mask; + + ret = regmap_read(rdev->regmap, info->modeset_reg, ®val); + if (ret != 0) { + dev_err(&rdev->dev, + "Failed to get mt6315 buck mode: %d\n", ret); + return ret; + } + + if (rdev_get_id(rdev) == MT6315_ID_VBUCK1) + modeset_mask = pdata->buck1_modeset_mask; + else + modeset_mask = info->modeset_mask; + + if ((regval & modeset_mask) == modeset_mask) + return REGULATOR_MODE_FAST; + + ret = regmap_read(rdev->regmap, info->lp_mode_reg, ®val); + if (ret != 0) { + dev_err(&rdev->dev, + "Failed to get mt6315 buck 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 mt6315_regulator_info *info = rdev_get_drvdata(rdev); + struct mt6315_init_data *pdata = dev_get_drvdata(rdev->dev.parent); + int ret = 0, val, curr_mode; + u32 modeset_mask; + + if (rdev_get_id(rdev) == MT6315_ID_VBUCK1) + modeset_mask = pdata->buck1_modeset_mask; + else + modeset_mask = info->modeset_mask; + + 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_err(&rdev->dev, + "Failed to set mt6315 buck mode: %d\n", ret); + return ret; + } + + return 0; +} + +static int mt6315_get_status(struct regulator_dev *rdev) +{ + int ret = 0; + u32 regval = 0; + struct mt6315_regulator_info *info = rdev_get_drvdata(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 struct mt6315_regulator_info mt6315_regulators[] = { + MT_BUCK("vbuck1", VBUCK1, mt_volt_range1, 1, + MT6315_BUCK_TOP_ELR0, 0), + MT_BUCK("vbuck3", VBUCK3, mt_volt_range1, 3, + MT6315_BUCK_TOP_ELR4, 0x4), + MT_BUCK("vbuck4", VBUCK4, mt_volt_range1, 4, + MT6315_BUCK_TOP_ELR6, 0x8), +}; + +static const struct mt6315_init_data mt6315_3_init_data = { + .id = MT6315_SLAVE_ID_3, + .size = MT6315_ID_3_MAX, + .buck1_modeset_mask = 0x3, +}; + +static const struct mt6315_init_data mt6315_6_init_data = { + .id = MT6315_SLAVE_ID_6, + .size = MT6315_ID_6_MAX, + .buck1_modeset_mask = 0xB, +}; + +static const struct mt6315_init_data mt6315_7_init_data = { + .id = MT6315_SLAVE_ID_7, + .size = MT6315_ID_7_MAX, + .buck1_modeset_mask = 0x3, +}; + +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", + .data = &mt6315_3_init_data, + }, { + .compatible = "mediatek,mt6315_6-regulator", + .data = &mt6315_6_init_data, + }, { + .compatible = "mediatek,mt6315_7-regulator", + .data = &mt6315_7_init_data, + }, { + /* sentinel */ + }, +}; +MODULE_DEVICE_TABLE(of, mt6315_of_match); + +static int mt6315_regulator_probe(struct spmi_device *pdev) +{ + const struct of_device_id *of_id; + struct device *dev = &pdev->dev; + struct regmap *regmap; + struct mt6315_init_data *pdata; + struct mt6315_chip *chip; + struct regulator_config config = {}; + struct regulator_dev *rdev; + int i; + + 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; + + of_id = of_match_device(mt6315_of_match, dev); + if (!of_id || !of_id->data) + return -ENODEV; + + pdata = (struct mt6315_init_data *)of_id->data; + chip->slave_id = pdata->id; + chip->dev = dev; + chip->regmap = regmap; + dev_set_drvdata(dev, chip); + + for (i = 0; i < pdata->size; i++) { + config.dev = dev; + config.driver_data = (mt6315_regulators + i); + config.regmap = regmap; + rdev = devm_regulator_register(dev, + &(mt6315_regulators + i)->desc, &config); + if (IS_ERR(rdev)) { + dev_err(dev, "failed to register %s\n", + (mt6315_regulators + i)->desc.name); + continue; + } + } + + 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_err(&pdev->dev, "%s: SLV_%d enable power off sequence failed.\n", + __func__, chip->slave_id); +} + +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 0000000..180049b0 --- /dev/null +++ b/include/linux/regulator/mt6315-regulator.h @@ -0,0 +1,45 @@ +/* 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 + +#define MT6315_ID_3_MAX 3 +#define MT6315_ID_6_MAX 2 +#define MT6315_ID_7_MAX 2 + +enum { + MT6315_ID_VBUCK1 = 0, + MT6315_ID_VBUCK3, + MT6315_ID_VBUCK4, + MT6315_ID_MAX, +}; + +/* 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_ELR4 0x144d +#define MT6315_BUCK_TOP_ELR6 0x144f +#define MT6315_BUCK_VBUCK1_DBG0 0x1499 +#define MT6315_BUCK_VBUCK1_DBG4 0x149d +#define MT6315_BUCK_VBUCK3_DBG0 0x1599 +#define MT6315_BUCK_VBUCK3_DBG4 0x159d +#define MT6315_BUCK_VBUCK4_DBG0 0x1619 +#define MT6315_BUCK_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 */