From patchwork Fri Jul 9 15:40:35 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: cy_huang X-Patchwork-Id: 472018 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.0 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B7213C07E9C for ; Fri, 9 Jul 2021 15:40:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9E444613CA for ; Fri, 9 Jul 2021 15:40:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232335AbhGIPng (ORCPT ); Fri, 9 Jul 2021 11:43:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48420 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232269AbhGIPng (ORCPT ); Fri, 9 Jul 2021 11:43:36 -0400 Received: from mail-pg1-x534.google.com (mail-pg1-x534.google.com [IPv6:2607:f8b0:4864:20::534]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CD165C0613DD; Fri, 9 Jul 2021 08:40:52 -0700 (PDT) Received: by mail-pg1-x534.google.com with SMTP id 37so10373449pgq.0; Fri, 09 Jul 2021 08:40:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=K6Ra4499Mv5TDI0Yujb+kPloT8dTaxT+C+3Nfx0tGRU=; b=tZ+kgNVX7F9xWyl4VsETCatrus1w1gcL488iCXEx0a2VYpTgBFvQJHW3vahlwYPkvT KFIqrH2ngtXXR/+FbjU8iKEtbuhcry1OxKRlsAhdJvc9FL5mz6HJKw7yzvz/8JrCJw26 1h+0DONBygf+cK4VC27HER4ItJyNgupGwdd4RkRZMTJ5BPh8YFlZRh21knqjKrUgbu9p wzrCCiCJGxSU8IoB5UX8BrOcZFlAK5xT3FUqBj9E6nZ+BIa5KkSv1ftABVdIuSOnBCi4 3ZeqlbeZS8/bN/h1vWoQ3BnIj6nnyyry8SDzA3ZIpRTZIM9XzJZeFdXsAmoKSghuT3Jf VvuQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=K6Ra4499Mv5TDI0Yujb+kPloT8dTaxT+C+3Nfx0tGRU=; b=d21Hmrr6QikyoXSN2BsaaYMiyD5Q8McUQs963OiZxRvIagKDpI5zKEMQAtgW6s4XsV URdC8tIu3xyzJpdP5j5XEuYILKjp8miv+hyKfVe50ROmddAmUafCKBE3uarptzbGbD4q NvobQDgW4ZDMJpFptCNHE5ZgspSHlZFjqfC1V8CNh9Ky9UTgdLeg+Tl/lokIQ+XPXtc2 PQtBPgDDK7uYIZ3oJtOWBk4nZDzmpHRgbuNFimy33jlNCubY1/MwzKtcGPHLW65tPpf1 TahOJu2/ZxO11snhEaThpBT9TKO+DGsGT+81aiBfMqo6fa7dnlbP9yfEs8m+FdX5ceNC 81IA== X-Gm-Message-State: AOAM5321SbdAiserO9nqsA2aVl/Egcf3F1XE7HzOuJRYt1u1JU/ModWr Auy6uf3+O3nL96u6IhLRV6w= X-Google-Smtp-Source: ABdhPJwXKC+Xxq70U/k0mS05+8YwvZnKSh5InxSGPB2kqu1d8PUK3mHvkObnoQcG8Kt1tBPhFshzbA== X-Received: by 2002:a63:3383:: with SMTP id z125mr38677501pgz.26.1625845252227; Fri, 09 Jul 2021 08:40:52 -0700 (PDT) Received: from localhost.localdomain (1-171-0-5.dynamic-ip.hinet.net. [1.171.0.5]) by smtp.gmail.com with ESMTPSA id g11sm8314703pgj.3.2021.07.09.08.40.47 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Fri, 09 Jul 2021 08:40:50 -0700 (PDT) From: cy_huang To: broonie@kernel.org, robh+dt@kernel.org Cc: lgirdwood@gmail.com, linux-kernel@vger.kernel.org, cy_huang@richtek.com, devicetree@vger.kernel.org Subject: [PATCH 1/2] regulator: rtq6752: Add binding document for Richtek RTQ6752 Date: Fri, 9 Jul 2021 23:40:35 +0800 Message-Id: <1625845236-30285-1-git-send-email-u0084500@gmail.com> X-Mailer: git-send-email 2.7.4 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: ChiYuan Huang Add binding document for Richtek RTQ6752. Signed-off-by: ChiYuan Huang --- .../regulator/richtek,rtq6752-regulator.yaml | 78 ++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 Documentation/devicetree/bindings/regulator/richtek,rtq6752-regulator.yaml diff --git a/Documentation/devicetree/bindings/regulator/richtek,rtq6752-regulator.yaml b/Documentation/devicetree/bindings/regulator/richtek,rtq6752-regulator.yaml new file mode 100644 index 00000000..641840e --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/richtek,rtq6752-regulator.yaml @@ -0,0 +1,78 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/regulator/richtek,rtq6752-regulator.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Richtek RTQ6752 TFT LCD Voltage Regulator + +maintainers: + - ChiYuan Huang + +description: | + The RTQ6752 is an I2C interface pgorammable power management IC. It includes + two synchronous boost converter for PAVDD, and one synchronous NAVDD + buck-boost. The device is suitable for automotive TFT-LCD panel. + +properties: + compatible: + enum: + - richtek,rtq6752 + + reg: + maxItems: 1 + + enable-gpios: + description: | + A connection of the chip 'enable' gpio line. If not provided, treat it as + external pull up. + maxItems: 1 + + regulators: + type: object + $ref: regulator.yaml# + + patternProperties: + "^(p|n)avdd$": + type: object + $ref: regulator.yaml# + description: | + regulator description for pavdd and navdd. + + additionalProperties: false + +required: + - compatible + - reg + - regulators + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + rtq6752@6b { + compatible = "richtek,rtq6752"; + status = "okay"; + reg = <0x6b>; + enable-gpios = <&gpio26 2 0>; + + regulators { + pavdd { + regulator-name = "rtq6752-pavdd"; + regulator-min-microvolt = <5000000>; + regulator-max-microvolt = <7300000>; + regulator-boot-on; + }; + navdd { + regulator-name = "rtq6752-navdd"; + regulator-min-microvolt = <5000000>; + regulator-max-microvolt = <7300000>; + regulator-boot-on; + }; + }; + }; + }; From patchwork Fri Jul 9 15:40:36 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: cy_huang X-Patchwork-Id: 472482 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.0 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 07CC6C07E99 for ; Fri, 9 Jul 2021 15:40:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E1FAF613C2 for ; Fri, 9 Jul 2021 15:40:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232433AbhGIPnk (ORCPT ); Fri, 9 Jul 2021 11:43:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48436 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232269AbhGIPnk (ORCPT ); Fri, 9 Jul 2021 11:43:40 -0400 Received: from mail-pj1-x1035.google.com (mail-pj1-x1035.google.com [IPv6:2607:f8b0:4864:20::1035]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C9D0EC0613E6; Fri, 9 Jul 2021 08:40:55 -0700 (PDT) Received: by mail-pj1-x1035.google.com with SMTP id oj10-20020a17090b4d8ab0290172f77377ebso6311570pjb.0; Fri, 09 Jul 2021 08:40:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=42xmxQQv5j3gpKzBiG4S4LnFOaJ5sPb/t9LZ9F41LmU=; b=EYlU43Fuvw/pFU05LbRtUa2/y30s4fSy+gesXzBeMOfbnGPxkWmnihj6ZbFri6J3lc zZ6bLn7mADZBvG/VjrSVjnb26Bhtp9KDvYZv3hs4K4lUwUrzAP+H0HGNqOak0TfcS9iJ J5T7w7r9obAENO1KAwm3qPbdJEyZ7MIGVwNIkqpy6qY5AymvJaowxPqzQpuNLF7W3tdn 8/Etzedzm8I/2tYe3d14LzfebkL7/nbZmFwAALuGJ/pmo+vIrQGJlYRdPyQvI3wNk/25 LGTnga2R6TApvkFi+lo7tWSvQ2qCCCvxxGGMZ4Inp5veJgefhMOnYKiMbZi9leni0XGl i4fQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=42xmxQQv5j3gpKzBiG4S4LnFOaJ5sPb/t9LZ9F41LmU=; b=lK07C5qUf7jJPa41e+8e4pNXHWNfa2Aakld7W+q15CVLEZDjN10gxwAUtWrmazkiUV hmz/RlLOFJdADvOpjeYSPtnqkOPeiakNQ7dEkR87qfpDGT4K64S5PdZLz+2EfSdBpxS4 VNYssWw24C2Oy8GrEcOaVku3HwVBcs8nqVYHkH16ZNpjUt7Z4Y+ZWVB18rtTNGXHhRpx 1wz3QuFmg8eBei3tWKiEeTS6YTnp/jUz6U62IR1VS2H1HzZlSZemszUAq0DazNjB3C1c lG0cIS5htYVTzjUlLPiHVwqWcT7xrFAzYuiX39J8WPwu8/s2RxtkZKDytxaR/nl0Uztk XUrQ== X-Gm-Message-State: AOAM531qrbnDnTNsqtXO9IrBtfrOZ9n8xeJZ7bLv6EbSULXApqw7EHVe w5T4c3zPDMql+7axpbk5b58XZ0MzHQIdlA== X-Google-Smtp-Source: ABdhPJxgGukqYLQi4J1sT+AEeeVK1dFmNOcJ3U+YFzsvbHJ6PkzzL/6Yx6iERR4wdvq538+Gl+3RQg== X-Received: by 2002:a17:90a:ce8a:: with SMTP id g10mr10972899pju.169.1625845255257; Fri, 09 Jul 2021 08:40:55 -0700 (PDT) Received: from localhost.localdomain (1-171-0-5.dynamic-ip.hinet.net. [1.171.0.5]) by smtp.gmail.com with ESMTPSA id g11sm8314703pgj.3.2021.07.09.08.40.52 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Fri, 09 Jul 2021 08:40:54 -0700 (PDT) From: cy_huang To: broonie@kernel.org, robh+dt@kernel.org Cc: lgirdwood@gmail.com, linux-kernel@vger.kernel.org, cy_huang@richtek.com, devicetree@vger.kernel.org Subject: [PATCH 2/2] regulator: rt6752: Add support for Richtek RTQ6752 Date: Fri, 9 Jul 2021 23:40:36 +0800 Message-Id: <1625845236-30285-2-git-send-email-u0084500@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1625845236-30285-1-git-send-email-u0084500@gmail.com> References: <1625845236-30285-1-git-send-email-u0084500@gmail.com> Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: ChiYuan Huang Add suport for Richtek RTQ6752. Signed-off-by: ChiYuan Huang --- drivers/regulator/Kconfig | 9 ++ drivers/regulator/Makefile | 1 + drivers/regulator/rtq6752-regulator.c | 285 ++++++++++++++++++++++++++++++++++ 3 files changed, 295 insertions(+) create mode 100644 drivers/regulator/rtq6752-regulator.c diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index 24ce9a1..6562d4c 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -1066,6 +1066,15 @@ config REGULATOR_RTMV20 the Richtek RTMV20. It can support the load current up to 6A and integrate strobe/vsync/fsin signal to synchronize the IR camera. +config REGULATOR_RTQ6752 + tristate "Richtek RTQ6752 TFT LCD voltage regulator" + depends on I2C + select REGMAP_I2C + help + This driver adds support for Richtek RTQ6752. RTQ6752 includes two + synchronous boost converters for PAVDD, and one synchronous NAVDD + buck-boost. This device is suitable for automotive TFT-LCD panel. + 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 8c2f822..102b2a0 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -128,6 +128,7 @@ obj-$(CONFIG_REGULATOR_RT5033) += rt5033-regulator.o obj-$(CONFIG_REGULATOR_RT6160) += rt6160-regulator.o obj-$(CONFIG_REGULATOR_RT6245) += rt6245-regulator.o obj-$(CONFIG_REGULATOR_RTMV20) += rtmv20-regulator.o +obj-$(CONFIG_REGULATOR_RTQ6752) += rtq6752-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/rtq6752-regulator.c b/drivers/regulator/rtq6752-regulator.c new file mode 100644 index 00000000..fe31597 --- /dev/null +++ b/drivers/regulator/rtq6752-regulator.c @@ -0,0 +1,285 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +enum { + RTQ6752_IDX_PAVDD = 0, + RTQ6752_IDX_NAVDD = 1, + RTQ6752_IDX_MAX +}; + +#define RTQ6752_REG_PAVDD 0x00 +#define RTQ6752_REG_NAVDD 0x01 +#define RTQ6752_REG_PAVDDONDLY 0x07 +#define RTQ6752_REG_PAVDDSSTIME 0x07 +#define RTQ6752_REG_NAVDDONDLY 0x0D +#define RTQ6752_REG_NAVDDSSTIME 0x0E +#define RTQ6752_REG_OPTION1 0x12 +#define RTQ6752_REG_CHSWITCH 0x16 +#define RTQ6752_REG_FAULT 0x1D + +#define RTQ6752_VOUT_MASK GENMASK(5, 0) +#define RTQ6752_NAVDDEN_MASK BIT(3) +#define RTQ6752_PAVDDEN_MASK BIT(0) +#define RTQ6752_PAVDDAD_MASK BIT(4) +#define RTQ6752_NAVDDAD_MASK BIT(3) +#define RTQ6752_PAVDDF_MASK BIT(3) +#define RTQ6752_NAVDDF_MASK BIT(0) +#define RTQ6752_ENABLE_MASK (BIT(RTQ6752_IDX_MAX) - 1) + +#define RTQ6752_VOUT_MINUV 5000000 +#define RTQ6752_VOUT_STEPUV 50000 +#define RTQ6752_VOUT_NUM 47 +#define RTQ6752_I2CRDY_TIMEUS 1000 +#define RTQ6752_MINSS_TIMEUS 5000 + +struct rtq6752_priv { + struct regmap *regmap; + struct gpio_desc *enable_gpio; + struct mutex lock; + unsigned char enable_flag; +}; + +static int rtq6752_set_vdd_enable(struct regulator_dev *rdev) +{ + struct rtq6752_priv *priv = rdev_get_drvdata(rdev); + int rid = rdev_get_id(rdev), ret; + + mutex_lock(&priv->lock); + if (!priv->enable_flag && priv->enable_gpio) { + gpiod_set_value(priv->enable_gpio, 1); + + usleep_range(RTQ6752_I2CRDY_TIMEUS, + RTQ6752_I2CRDY_TIMEUS + 100); + + regcache_cache_only(priv->regmap, false); + ret = regcache_sync(priv->regmap); + if (ret) { + mutex_unlock(&priv->lock); + return ret; + } + } + + priv->enable_flag |= BIT(rid); + mutex_unlock(&priv->lock); + + return regulator_enable_regmap(rdev); +} + +static int rtq6752_set_vdd_disable(struct regulator_dev *rdev) +{ + struct rtq6752_priv *priv = rdev_get_drvdata(rdev); + int rid = rdev_get_id(rdev), ret; + + ret = regulator_disable_regmap(rdev); + if (ret) + return ret; + + mutex_lock(&priv->lock); + priv->enable_flag &= ~BIT(rid); + + if (!priv->enable_flag && priv->enable_gpio) { + regcache_cache_only(priv->regmap, true); + regcache_mark_dirty(priv->regmap); + + gpiod_set_value(priv->enable_gpio, 0); + } + mutex_unlock(&priv->lock); + + return 0; +} + +static int rtq6752_get_error_flags(struct regulator_dev *rdev, + unsigned int *flags) +{ + unsigned int val, events = 0; + const unsigned int fault_mask[] = { + RTQ6752_PAVDDF_MASK, RTQ6752_NAVDDF_MASK }; + int rid = rdev_get_id(rdev), ret; + + ret = regmap_read(rdev->regmap, RTQ6752_REG_FAULT, &val); + if (ret) + return ret; + + if (val & fault_mask[rid]) + events = REGULATOR_ERROR_REGULATION_OUT; + + *flags = events; + return 0; +} + +static const struct regulator_ops rtq6752_regulator_ops = { + .list_voltage = regulator_list_voltage_linear, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .enable = rtq6752_set_vdd_enable, + .disable = rtq6752_set_vdd_disable, + .is_enabled = regulator_is_enabled_regmap, + .set_active_discharge = regulator_set_active_discharge_regmap, + .get_error_flags = rtq6752_get_error_flags, +}; + +static const struct regulator_desc rtq6752_regulator_descs[] = { + { + .name = "rtq6752-pavdd", + .of_match = of_match_ptr("pavdd"), + .regulators_node = of_match_ptr("regulators"), + .id = RTQ6752_IDX_PAVDD, + .n_voltages = RTQ6752_VOUT_NUM, + .ops = &rtq6752_regulator_ops, + .owner = THIS_MODULE, + .min_uV = RTQ6752_VOUT_MINUV, + .uV_step = RTQ6752_VOUT_STEPUV, + .enable_time = RTQ6752_MINSS_TIMEUS, + .vsel_reg = RTQ6752_REG_PAVDD, + .vsel_mask = RTQ6752_VOUT_MASK, + .enable_reg = RTQ6752_REG_CHSWITCH, + .enable_mask = RTQ6752_PAVDDEN_MASK, + .active_discharge_reg = RTQ6752_REG_OPTION1, + .active_discharge_mask = RTQ6752_PAVDDAD_MASK, + .active_discharge_off = RTQ6752_PAVDDAD_MASK, + }, + { + .name = "rtq6752-navdd", + .of_match = of_match_ptr("navdd"), + .regulators_node = of_match_ptr("regulators"), + .id = RTQ6752_IDX_NAVDD, + .n_voltages = RTQ6752_VOUT_NUM, + .ops = &rtq6752_regulator_ops, + .owner = THIS_MODULE, + .min_uV = RTQ6752_VOUT_MINUV, + .uV_step = RTQ6752_VOUT_STEPUV, + .enable_time = RTQ6752_MINSS_TIMEUS, + .vsel_reg = RTQ6752_REG_NAVDD, + .vsel_mask = RTQ6752_VOUT_MASK, + .enable_reg = RTQ6752_REG_CHSWITCH, + .enable_mask = RTQ6752_NAVDDEN_MASK, + .active_discharge_reg = RTQ6752_REG_OPTION1, + .active_discharge_mask = RTQ6752_NAVDDAD_MASK, + .active_discharge_off = RTQ6752_NAVDDAD_MASK, + } +}; + +static int rtq6752_init_device_properties(struct rtq6752_priv *priv) +{ + u8 raw_vals[] = { 0, 0 }; + int ret; + + /* Configure PAVDD on and softstart delay time to the minimum */ + ret = regmap_raw_write(priv->regmap, RTQ6752_REG_PAVDDONDLY, raw_vals, + ARRAY_SIZE(raw_vals)); + if (ret) + return ret; + + /* Configure NAVDD on and softstart delay time to the minimum */ + return regmap_raw_write(priv->regmap, RTQ6752_REG_NAVDDONDLY, raw_vals, + ARRAY_SIZE(raw_vals)); +} + +static bool rtq6752_is_volatile_reg(struct device *dev, unsigned int reg) +{ + if (reg == RTQ6752_REG_FAULT) + return true; + return false; +} + +static const struct reg_default rtq6752_reg_defaults[] = { + { RTQ6752_REG_PAVDD, 0x14 }, + { RTQ6752_REG_NAVDD, 0x14 }, + { RTQ6752_REG_PAVDDONDLY, 0x01 }, + { RTQ6752_REG_PAVDDSSTIME, 0x01 }, + { RTQ6752_REG_NAVDDONDLY, 0x01 }, + { RTQ6752_REG_NAVDDSSTIME, 0x01 }, + { RTQ6752_REG_OPTION1, 0x07 }, + { RTQ6752_REG_CHSWITCH, 0x29 }, +}; + +static const struct regmap_config rtq6752_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .cache_type = REGCACHE_RBTREE, + .max_register = RTQ6752_REG_FAULT, + .reg_defaults = rtq6752_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(rtq6752_reg_defaults), + .volatile_reg = rtq6752_is_volatile_reg, +}; + +static int rtq6752_probe(struct i2c_client *i2c) +{ + struct rtq6752_priv *priv; + struct regulator_config reg_cfg = {}; + struct regulator_dev *rdev; + int i, ret; + + priv = devm_kzalloc(&i2c->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + mutex_init(&priv->lock); + + priv->enable_gpio = devm_gpiod_get_optional(&i2c->dev, "enable", + GPIOD_OUT_HIGH); + if (IS_ERR(priv->enable_gpio)) { + dev_err(&i2c->dev, "Failed to get 'enable' gpio\n"); + return PTR_ERR(priv->enable_gpio); + } + + usleep_range(RTQ6752_I2CRDY_TIMEUS, RTQ6752_I2CRDY_TIMEUS + 100); + /* Default EN pin to high, PAVDD and NAVDD will be on */ + priv->enable_flag = RTQ6752_ENABLE_MASK; + + priv->regmap = devm_regmap_init_i2c(i2c, &rtq6752_regmap_config); + if (IS_ERR(priv->regmap)) { + dev_err(&i2c->dev, "Failed to init regmap\n"); + return PTR_ERR(priv->regmap); + } + + ret = rtq6752_init_device_properties(priv); + if (ret) { + dev_err(&i2c->dev, "Failed to init device properties\n"); + return ret; + } + + reg_cfg.dev = &i2c->dev; + reg_cfg.regmap = priv->regmap; + reg_cfg.driver_data = priv; + + for (i = 0; i < ARRAY_SIZE(rtq6752_regulator_descs); i++) { + rdev = devm_regulator_register(&i2c->dev, + rtq6752_regulator_descs + i, + ®_cfg); + if (IS_ERR(rdev)) { + dev_err(&i2c->dev, "Failed to init %d regulator\n", i); + return PTR_ERR(rdev); + } + } + + return 0; +} + +static const struct of_device_id __maybe_unused rtq6752_device_table[] = { + { .compatible = "richtek,rtq6752", }, + {} +}; +MODULE_DEVICE_TABLE(of, rtq6752_device_table); + +static struct i2c_driver rtq6752_driver = { + .driver = { + .name = "rtq6752", + .of_match_table = rtq6752_device_table, + }, + .probe_new = rtq6752_probe, +}; +module_i2c_driver(rtq6752_driver); + +MODULE_AUTHOR("ChiYuan Hwang "); +MODULE_DESCRIPTION("Richtek RTQ6752 Regulator Driver"); +MODULE_LICENSE("GPL v2");