From patchwork Thu Jul 8 11:57:59 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alistair X-Patchwork-Id: 471469 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=-16.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, UNWANTED_LANGUAGE_BODY,URIBL_BLOCKED,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 DAEBDC07E96 for ; Thu, 8 Jul 2021 11:58:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B2B766143E for ; Thu, 8 Jul 2021 11:58:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231472AbhGHMA7 (ORCPT ); Thu, 8 Jul 2021 08:00:59 -0400 Received: from out1-smtp.messagingengine.com ([66.111.4.25]:60095 "EHLO out1-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231347AbhGHMA7 (ORCPT ); Thu, 8 Jul 2021 08:00:59 -0400 Received: from compute4.internal (compute4.nyi.internal [10.202.2.44]) by mailout.nyi.internal (Postfix) with ESMTP id 2CE215C0041; Thu, 8 Jul 2021 07:58:17 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute4.internal (MEProxy); Thu, 08 Jul 2021 07:58:17 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alistair23.me; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; s=fm1; bh=pRIPB83la3iKOmVVHMgSN8VS8y +Ff25CtnJH129lD38=; b=XHdw/n2X0QPHhk5Rk29wFDa/p/xkS59o/mc2SeDavS 3HukKqfZkR7YE/KafMUaT7+v431Tf9/nfa7M+xgzu1jYE3f3sdnPVfbiJAj7Ow8W gk86tgDL8W9Bdo5eI1y2tM0KivP9sAWh9mORZkD0VAk7IAT9RiIRUtoSZFtTXI3r 0MJQv0fJd5i01ZlqGbbeYHVBXHM5gV4ojFXvXMG+BpUoZAc90bfYLT1un9TpDm9z JhId10gbVqt5CVRwBn0XjXuSN2BbrOTu7PPWd/+qGhluzBsf1OSFqfu7EdHPqfHy nncPVm89f+m+v47eAy8SmD8EmU+wDVmCKbjCM7PpylAg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:date:from :message-id:mime-version:subject:to:x-me-proxy:x-me-proxy :x-me-sender:x-me-sender:x-sasl-enc; s=fm3; bh=pRIPB83la3iKOmVVH MgSN8VS8y+Ff25CtnJH129lD38=; b=s/iUt8VeVjzPozum6CJNWV6Xn3GrOETvg DshS8wObJ82OBV8qXoTx2S2ALniOjn4WccVTD/xksmrsxsOuXbbZFhJvSJ6F4kFV 9wlZ86/MycnGXIHawyrhd/SRArdHbym9O+pIeVs0wQg8v2VLrMDPUj+qwA1bI2vf fy5OknMGFe5jkOSaKO4wrdrp6/RvUefmp58utwYo3974tPNMXCkvPkXxefcKetNf VPrNPTF99cCxB7lkKlCNYa7Uwjky3jiNDTM4rJC9Qbkm3jAwW2NUpm4JS9As9YOI GCOZDTwV3nUaykgTqBsYy8qHOKzXF4ItNdURLG6tW2P208GQLz/DA== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvtddrtdeggdeghecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecunecujfgurhephffvufffkffoggfgsedtkeertdertd dtnecuhfhrohhmpeetlhhishhtrghirhcuhfhrrghntghishcuoegrlhhishhtrghirhes rghlihhsthgrihhrvdefrdhmvgeqnecuggftrfgrthhtvghrnhepkeduveffffefffefve fhudejfeefiedugfeltdegueehhfejkedvudeltdeihedtnecuffhomhgrihhnpehrvghm rghrkhgrsghlvgdrtghomhenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmh grihhlfhhrohhmpegrlhhishhtrghirhesrghlihhsthgrihhrvdefrdhmvg X-ME-Proxy: Received: by mail.messagingengine.com (Postfix) with ESMTPA; Thu, 8 Jul 2021 07:58:13 -0400 (EDT) From: Alistair Francis To: lee.jones@linaro.org, robh+dt@kernel.org, lgirdwood@gmail.com, broonie@kernel.org, linux-imx@nxp.com, kernel@pengutronix.de Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, alistair23@gmail.com, Alistair Francis Subject: [PATCH v7 1/6] mfd: sy7636a: Initial commit Date: Thu, 8 Jul 2021 21:57:59 +1000 Message-Id: <20210708115804.212-1-alistair@alistair23.me> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Initial support for the Silergy SY7636A Power Management chip. Signed-off-by: Alistair Francis --- drivers/mfd/Kconfig | 9 +++++ drivers/mfd/Makefile | 1 + drivers/mfd/sy7636a.c | 81 +++++++++++++++++++++++++++++++++++++ include/linux/mfd/sy7636a.h | 47 +++++++++++++++++++++ 4 files changed, 138 insertions(+) create mode 100644 drivers/mfd/sy7636a.c create mode 100644 include/linux/mfd/sy7636a.h diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 6a3fd2d75f96..7b59aa0fd3f2 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -1352,6 +1352,15 @@ config MFD_SYSCON Select this option to enable accessing system control registers via regmap. +config MFD_SY7636A + tristate "Silergy SY7636A Power Management chip" + select MFD_CORE + select REGMAP_I2C + depends on I2C + help + Select this option to enable support for the Silergy SY7636A + Power Management chip. + config MFD_DAVINCI_VOICECODEC tristate select MFD_CORE diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 8116c19d5fd4..cbe581e87fa9 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -266,6 +266,7 @@ obj-$(CONFIG_MFD_KHADAS_MCU) += khadas-mcu.o obj-$(CONFIG_MFD_ACER_A500_EC) += acer-ec-a500.o obj-$(CONFIG_MFD_QCOM_PM8008) += qcom-pm8008.o +obj-$(CONFIG_MFD_SY7636A) += sy7636a.o obj-$(CONFIG_SGI_MFD_IOC3) += ioc3.o obj-$(CONFIG_MFD_SIMPLE_MFD_I2C) += simple-mfd-i2c.o obj-$(CONFIG_MFD_INTEL_M10_BMC) += intel-m10-bmc.o diff --git a/drivers/mfd/sy7636a.c b/drivers/mfd/sy7636a.c new file mode 100644 index 000000000000..345892e11221 --- /dev/null +++ b/drivers/mfd/sy7636a.c @@ -0,0 +1,81 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// MFD parent driver for SY7636A chip +// +// Copyright (C) 2021 reMarkable AS - http://www.remarkable.com/ +// +// Authors: Lars Ivar Miljeteig +// Alistair Francis +// +// Based on the lp87565 driver by Keerthy + +#include +#include +#include +#include + +#include + +static const struct regmap_config sy7636a_regmap_config = { + .reg_bits = 8, + .val_bits = 8, +}; + +static const struct mfd_cell sy7636a_cells[] = { + { .name = "sy7636a-regulator", }, + { .name = "sy7636a-temperature", }, + { .name = "sy7636a-thermal", }, +}; + +static const struct of_device_id of_sy7636a_match_table[] = { + { .compatible = "silergy,sy7636a", }, + {} +}; +MODULE_DEVICE_TABLE(of, of_sy7636a_match_table); + +static int sy7636a_probe(struct i2c_client *client, + const struct i2c_device_id *ids) +{ + struct sy7636a *sy7636a; + int ret; + + sy7636a = devm_kzalloc(&client->dev, sizeof(*sy7636a), GFP_KERNEL); + if (!sy7636a) + return -ENOMEM; + + sy7636a->dev = &client->dev; + + sy7636a->regmap = devm_regmap_init_i2c(client, &sy7636a_regmap_config); + if (IS_ERR(sy7636a->regmap)) { + ret = PTR_ERR(sy7636a->regmap); + dev_err(sy7636a->dev, + "Failed to initialize register map: %d\n", ret); + return ret; + } + + i2c_set_clientdata(client, sy7636a); + + return devm_mfd_add_devices(sy7636a->dev, PLATFORM_DEVID_AUTO, + sy7636a_cells, ARRAY_SIZE(sy7636a_cells), + NULL, 0, NULL); +} + +static const struct i2c_device_id sy7636a_id_table[] = { + { "sy7636a", 0 }, + { }, +}; +MODULE_DEVICE_TABLE(i2c, sy7636a_id_table); + +static struct i2c_driver sy7636a_driver = { + .driver = { + .name = "sy7636a", + .of_match_table = of_sy7636a_match_table, + }, + .probe = sy7636a_probe, + .id_table = sy7636a_id_table, +}; +module_i2c_driver(sy7636a_driver); + +MODULE_AUTHOR("Lars Ivar Miljeteig "); +MODULE_DESCRIPTION("Silergy SY7636A Multi-Function Device Driver"); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/mfd/sy7636a.h b/include/linux/mfd/sy7636a.h new file mode 100644 index 000000000000..b6845a3572b8 --- /dev/null +++ b/include/linux/mfd/sy7636a.h @@ -0,0 +1,47 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Functions to access SY3686A power management chip. + * + * Copyright (C) 2021 reMarkable AS - http://www.remarkable.com/ + */ + +#ifndef __MFD_SY7636A_H +#define __MFD_SY7636A_H + +#include +#include +#include +#include + +#define SY7636A_REG_OPERATION_MODE_CRL 0x00 +#define SY7636A_OPERATION_MODE_CRL_VCOMCTL BIT(6) +#define SY7636A_OPERATION_MODE_CRL_ONOFF BIT(7) +#define SY7636A_REG_VCOM_ADJUST_CTRL_L 0x01 +#define SY7636A_REG_VCOM_ADJUST_CTRL_H 0x02 +#define SY7636A_REG_VCOM_ADJUST_CTRL_MASK 0x01ff +#define SY7636A_REG_VLDO_VOLTAGE_ADJULST_CTRL 0x03 +#define SY7636A_REG_POWER_ON_DELAY_TIME 0x06 +#define SY7636A_REG_FAULT_FLAG 0x07 +#define SY7636A_FAULT_FLAG_PG BIT(0) +#define SY7636A_REG_TERMISTOR_READOUT 0x08 + +#define SY7636A_REG_MAX 0x08 + +#define VCOM_MIN 0 +#define VCOM_MAX 5000 + +#define VCOM_ADJUST_CTRL_MASK 0x1ff +// Used to shift the high byte +#define VCOM_ADJUST_CTRL_SHIFT 8 +// Used to scale from VCOM_ADJUST_CTRL to mv +#define VCOM_ADJUST_CTRL_SCAL 10000 + +#define FAULT_FLAG_SHIFT 1 + +struct sy7636a { + struct device *dev; + struct regmap *regmap; + struct gpio_desc *pgood_gpio; +}; + +#endif /* __LINUX_MFD_SY7636A_H */