From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Tue, 18 Jan 2022 09:22:54 +0100 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1n9jlW-005Ofy-FP for lore@lore.pengutronix.de; Tue, 18 Jan 2022 09:22:54 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:e::133]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1n9jlU-0008QL-V4 for lore@pengutronix.de; Tue, 18 Jan 2022 09:22:53 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To :From:Reply-To:Cc:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=k3mAtjumbTqxJI+3ZK2kn7jDtTLctn3qSLdVTcEzE0k=; b=isuAR0eRiFUnTz r7n9EwE0xsLYtxG/wQa6erLI41UdnxQukmmYbE82pWFKAP7qaJZFvDjdYfaywJnoCMoMVNP6BC9pL rVb4AugwVgrlR0dRKthLDfBdK0Q3P/CNo+HEHGA5UCiZGeGj8t8r4LqAN6RHnKwgo3JEB9PpKqES/ Ms2ekLHelXX56F21RDFXbLj4ZKpLVNWk6Sv/lhVtrvlhLw6UlepKqbXo/SFfToFMark/BxdTWLy9c KqU46QrgW4JVYiMAwFGcq1KVz2KlPjcM0QoFUS6R0hA9rEFdRVnfF099q1gcGeaE4pGktRAx4aiVb 5ySmCExPWwXidPPVsdBA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1n9jkC-000jJk-ER; Tue, 18 Jan 2022 08:21:32 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1n9jk4-000jIS-Sh for barebox@lists.infradead.org; Tue, 18 Jan 2022 08:21:26 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1n9jk3-0008D7-Mn for barebox@lists.infradead.org; Tue, 18 Jan 2022 09:21:23 +0100 Received: from [2a0a:edc0:0:900:1d::45] (helo=ginster) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1n9jk3-00AyBi-Mu for barebox@lists.infradead.org; Tue, 18 Jan 2022 09:21:22 +0100 Received: from jbe by ginster with local (Exim 4.94.2) (envelope-from ) id 1n9jk2-000J3V-BD for barebox@lists.infradead.org; Tue, 18 Jan 2022 09:21:22 +0100 From: Juergen Borleis To: barebox@lists.infradead.org Date: Tue, 18 Jan 2022 09:21:21 +0100 Message-Id: <20220118082122.73204-1-jbe@pengutronix.de> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220118_002124_956922_4CD0E9AA X-CRM114-Status: GOOD ( 19.46 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:e::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-3.7 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH v2 1/2] Add the base Ricoh RN5T568 PMIC driver X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) --- drivers/mfd/Kconfig | 6 ++ drivers/mfd/Makefile | 1 + drivers/mfd/rn5t568.c | 165 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 172 insertions(+) create mode 100644 drivers/mfd/rn5t568.c diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 8468a2d..1602480 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -68,6 +68,12 @@ config MFD_STPMIC1 help Select this to support communication with the STPMIC1. +config MFD_RN568PMIC + depends on I2C + bool "Ricoh RN5T568 MFD driver" + help + Select this to support communication with the Ricoh RN5T568 PMIC. + config MFD_SUPERIO bool diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 2bcf900..50f54cf 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -13,6 +13,7 @@ obj-$(CONFIG_MFD_TWL4030) += twl4030.o obj-$(CONFIG_MFD_TWL6030) += twl6030.o obj-$(CONFIG_RAVE_SP_CORE) += rave-sp.o obj-$(CONFIG_MFD_STPMIC1) += stpmic1.o +obj-$(CONFIG_MFD_RN568PMIC) += rn5t568.o obj-$(CONFIG_MFD_SUPERIO) += superio.o obj-$(CONFIG_FINTEK_SUPERIO) += fintek-superio.o obj-$(CONFIG_SMSC_SUPERIO) += smsc-superio.o diff --git a/drivers/mfd/rn5t568.c b/drivers/mfd/rn5t568.c new file mode 100644 index 0000000..c1c792c --- /dev/null +++ b/drivers/mfd/rn5t568.c @@ -0,0 +1,165 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * MFD core driver for Ricoh RN5T618 PMIC + * Note: Manufacturer is now Nisshinbo Micro Devices Inc. + * + * Copyright (C) 2014 Beniamino Galvani + * Copyright (C) 2016 Toradex AG + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define RN5T568_LSIVER 0x00 +#define RN5T568_OTPVER 0x01 +#define RN5T568_PONHIS 0x09 +# define RN5T568_PONHIS_ON_EXTINPON BIT(3) +# define RN5T568_PONHIS_ON_REPWRPON BIT(1) +# define RN5T568_PONHIS_ON_PWRONPON BIT(0) +#define RN5T568_POFFHIS 0x0a +# define RN5T568_POFFHIS_N_OEPOFF BIT(7) +# define RN5T568_POFFHIS_DCLIMPOFF BIT(6) +# define RN5T568_POFFHIS_WDGPOFF BIT(5) +# define RN5T568_POFFHIS_CPUPOFF BIT(4) +# define RN5T568_POFFHIS_IODETPOFF BIT(3) +# define RN5T568_POFFHIS_VINDETPOFF BIT(2) +# define RN5T568_POFFHIS_TSHUTPOFF BIT(1) +# define RN5T568_POFFHIS_PWRONPOFF BIT(0) +#define RN5T568_SLPCNT 0x0e +# define RN5T568_SLPCNT_SWPPWROFF BIT(0) +#define RN5T568_REPCNT 0x0f +# define RN5T568_REPCNT_OFF_RESETO_16MS 0x30 +# define RN5T568_REPCNT_OFF_REPWRTIM_1000MS 0x06 +# define RN5T568_REPCNT_OFF_REPWRON BIT(0) +#define RN5T568_MAX_REG 0xbc + +struct rn5t568 { + struct restart_handler restart; + struct regmap *regmap; +}; + +static void rn5t568_restart(struct restart_handler *rst) +{ + struct rn5t568 *rn5t568 = container_of(rst, struct rn5t568, restart); + + regmap_write(rn5t568->regmap, RN5T568_SLPCNT, RN5T568_SLPCNT_SWPPWROFF); +} + +static int rn5t568_reset_reason_detect(struct device_d *dev, struct regmap *regmap) +{ + unsigned int reg; + int ret; + + ret = regmap_read(regmap, RN5T568_PONHIS, ®); + if (ret) + return ret; + + dev_dbg(dev, "Power-on history: %x\n", reg); + + if (reg == 0) { + dev_info(dev, "No power-on reason available\n"); + return 0; + } + + if (reg & RN5T568_PONHIS_ON_EXTINPON) { + reset_source_set_device(dev, RESET_POR); + return 0; + } else if (reg & RN5T568_PONHIS_ON_PWRONPON) { + reset_source_set_device(dev, RESET_POR); + return 0; + } else if (!(reg & RN5T568_PONHIS_ON_REPWRPON)) + return -EINVAL; + + ret = regmap_read(regmap, RN5T568_POFFHIS, ®); + if (ret) + return ret; + + dev_dbg(dev, "Power-off history: %x\n", reg); + + if (reg & RN5T568_POFFHIS_PWRONPOFF) + reset_source_set_device(dev, RESET_POR); + else if (reg & RN5T568_POFFHIS_TSHUTPOFF) + reset_source_set_device(dev, RESET_THERM); + else if (reg & RN5T568_POFFHIS_VINDETPOFF) + reset_source_set_device(dev, RESET_BROWNOUT); + else if (reg & RN5T568_POFFHIS_IODETPOFF) + reset_source_set_device(dev, RESET_UKWN); + else if (reg & RN5T568_POFFHIS_CPUPOFF) + reset_source_set_device(dev, RESET_RST); + else if (reg & RN5T568_POFFHIS_WDGPOFF) + reset_source_set_device(dev, RESET_WDG); + else if (reg & RN5T568_POFFHIS_DCLIMPOFF) + reset_source_set_device(dev, RESET_BROWNOUT); + else if (reg & RN5T568_POFFHIS_N_OEPOFF) + reset_source_set_device(dev, RESET_EXT); + else + return -EINVAL; + + return 0; +} + +static const struct regmap_config rn5t568_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = RN5T568_MAX_REG, +}; + +static int __init rn5t568_i2c_probe(struct device_d *dev) +{ + struct rn5t568 *pmic_instance; + unsigned char reg[2]; + int ret; + + pmic_instance = xzalloc(sizeof(struct rn5t568)); + pmic_instance->regmap = regmap_init_i2c(to_i2c_client(dev), &rn5t568_regmap_config); + if (IS_ERR(pmic_instance->regmap)) + return PTR_ERR(pmic_instance->regmap); + + ret = regmap_register_cdev(pmic_instance->regmap, NULL); + if (ret) + return ret; + + ret = regmap_bulk_read(pmic_instance->regmap, RN5T568_LSIVER, ®, 2); + if (ret) { + dev_err(dev, "Failed to read PMIC version via I2C\n"); + return ret; + } + + dev_info(dev, "Found NMD RN5T568 LSI %x, OTP: %x\n", reg[0], reg[1]); + + /* Settings used to trigger software reset and by a watchdog trigger */ + regmap_write(pmic_instance->regmap, RN5T568_REPCNT, RN5T568_REPCNT_OFF_RESETO_16MS | + RN5T568_REPCNT_OFF_REPWRTIM_1000MS | RN5T568_REPCNT_OFF_REPWRON); + + pmic_instance->restart.priority = of_get_restart_priority(dev->device_node); + pmic_instance->restart.name = "RN5T568"; + pmic_instance->restart.restart = &rn5t568_restart; + restart_handler_register(&pmic_instance->restart); + dev_dbg(dev, "RN5t: Restart handler with priority %d registered\n", pmic_instance->restart.priority); + + ret = rn5t568_reset_reason_detect(dev, pmic_instance->regmap); + if (ret) + dev_warn(dev, "Failed to query reset reason\n"); + + return of_platform_populate(dev->device_node, NULL, dev); +} + +static __maybe_unused const struct of_device_id rn5t568_of_match[] = { + { .compatible = "ricoh,rn5t568", .data = NULL, }, + { } +}; + +static struct driver_d rn5t568_i2c_driver = { + .name = "rn5t568-i2c", + .probe = rn5t568_i2c_probe, + .of_compatible = DRV_OF_COMPAT(rn5t568_of_match), +}; + +coredevice_i2c_driver(rn5t568_i2c_driver); -- 2.30.2 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox