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: 11697619 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 D2E05913 for ; Mon, 3 Aug 2020 08:57:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B10EE20775 for ; Mon, 3 Aug 2020 08:57:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="iyW5n6Kc" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725806AbgHCI5v (ORCPT ); Mon, 3 Aug 2020 04:57:51 -0400 Received: from mailgw01.mediatek.com ([210.61.82.183]:21093 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726534AbgHCI5v (ORCPT ); Mon, 3 Aug 2020 04:57:51 -0400 X-UUID: 64df4fa217574b6eaea3d95b717bd6dd-20200803 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=vlSnqNYVUdN0Y8lMTdV2j8H5J5FACBMGLKH3hNfgXKQ=; b=iyW5n6Kcf/4SdqrAi1VGHQyxWophO7GPquonTGnLqZKPyLkGEn8e0oC64uZLeyXCGraEBtJH06w3gXM/5xbTD8J7QyZGUheaP+8JQAhvkPHE5yDijiDJ0n1vJI60vkj/wFsxzafpx6XA/mXaeo+JCcdRc3emOxcRaRXcLn7XLn4=; X-UUID: 64df4fa217574b6eaea3d95b717bd6dd-20200803 Received: from mtkexhb02.mediatek.inc [(172.21.101.103)] by mailgw01.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 1365661106; Mon, 03 Aug 2020 16:57:38 +0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs07n1.mediatek.inc (172.21.101.16) 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 CC: Liam Girdwood , Stephen Boyd , Hsin-Hsiung Wang , , , , , , 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 Sender: linux-arm-msm-owner@vger.kernel.org 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 | 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 */