From patchwork Tue Mar 11 15:46:12 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matt Porter X-Patchwork-Id: 3813261 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 335D99F1CD for ; Tue, 11 Mar 2014 16:21:52 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id EBE6E201FD for ; Tue, 11 Mar 2014 16:21:50 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DAA7520204 for ; Tue, 11 Mar 2014 16:21:49 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WNOzx-0006A5-Ou; Tue, 11 Mar 2014 15:53:46 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WNOzJ-00033v-DL; Tue, 11 Mar 2014 15:53:05 +0000 Received: from mail-qc0-f171.google.com ([209.85.216.171]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WNOzG-00033G-HP for linux-arm-kernel@lists.infradead.org; Tue, 11 Mar 2014 15:53:03 +0000 Received: by mail-qc0-f171.google.com with SMTP id x13so9737268qcv.16 for ; Tue, 11 Mar 2014 08:52:38 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=8f8WAZbW8QOg9+ZdlYybKKWDLsFeIq603Lqogf+CWhk=; b=S7h1PI1KNqCmCbbYcSC2T74xvYjFdVd+E5NWIhZmPwtzSJK3qsVZ7fOLj+WZb9zGcm dDJFWeCXa43jyNE7A6muY3456xvowHjxxuEEpb4t1yfJfj8Q9UaDnT7kY974FjcRFXSv 9d5bJ5QXpqNswazcK3niKjbrQ2+4tv7lObFyrkZmieaCQYmOaL+ThV4ORAb7Tze0ZVrN AtLVLQ4403teheIIH3BMt2dfkNC+9rdWJsJiCoRSj4+ExCmZmq6gZQh7RT/sJMpK5JGB cYNwLM4m9UT8moYHsOFg/4QLR7h7cJ1HhXJqZbdOYJ+fernI6TseG4WJ/l8Oxunn181s h21g== X-Gm-Message-State: ALoCoQlL12WDtz1olncYxj3ruHjy3y8z3Uia+aLJFi/e/qk1II3QJr0bbGd7qipEDLJQBkh1kp30 X-Received: by 10.224.148.8 with SMTP id n8mr36814758qav.20.1394552788716; Tue, 11 Mar 2014 08:46:28 -0700 (PDT) Received: from beef.ohporter.com (cpe-98-27-254-98.neo.res.rr.com. [98.27.254.98]) by mx.google.com with ESMTPSA id q10sm69110559qah.22.2014.03.11.08.46.26 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 11 Mar 2014 08:46:27 -0700 (PDT) From: Matt Porter To: Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Samuel Ortiz , Lee Jones , Liam Girdwood , Mark Brown , Christian Daudt Subject: [PATCH v3 2/5] mfd: add bcm590xx pmu driver Date: Tue, 11 Mar 2014 11:46:12 -0400 Message-Id: <1394552775-31264-3-git-send-email-mporter@linaro.org> X-Mailer: git-send-email 1.8.4 In-Reply-To: <1394552775-31264-1-git-send-email-mporter@linaro.org> References: <1394552775-31264-1-git-send-email-mporter@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140311_115302_651654_1641B85D X-CRM114-Status: GOOD ( 19.67 ) X-Spam-Score: -2.6 (--) Cc: Devicetree List , Linux Kernel Mailing List , Linux ARM Kernel List X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add a driver for the BCM590xx PMU multi-function devices. The driver initially supports regmap initialization and instantiation of the voltage regulator device function of the PMU. Signed-off-by: Matt Porter Reviewed-by: Tim Kryger Reviewed-by: Markus Mayer --- drivers/mfd/Kconfig | 8 ++++ drivers/mfd/Makefile | 1 + drivers/mfd/bcm590xx.c | 93 ++++++++++++++++++++++++++++++++++++++++++++ include/linux/mfd/bcm590xx.h | 31 +++++++++++++++ 4 files changed, 133 insertions(+) create mode 100644 drivers/mfd/bcm590xx.c create mode 100644 include/linux/mfd/bcm590xx.h diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 49bb445..27ff37c 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -59,6 +59,14 @@ config MFD_AAT2870_CORE additional drivers must be enabled in order to use the functionality of the device. +config MFD_BCM590XX + tristate "Broadcom BCM590xx PMUs" + select MFD_CORE + select REGMAP_I2C + depends on I2C + help + Support for the BCM590xx PMUs from Broadcom + config MFD_CROS_EC tristate "ChromeOS Embedded Controller" select MFD_CORE diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 5aea5ef..4c342bf 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -8,6 +8,7 @@ obj-$(CONFIG_MFD_88PM800) += 88pm800.o 88pm80x.o obj-$(CONFIG_MFD_88PM805) += 88pm805.o 88pm80x.o obj-$(CONFIG_MFD_SM501) += sm501.o obj-$(CONFIG_MFD_ASIC3) += asic3.o tmio_core.o +obj-$(CONFIG_MFD_BCM590XX) += bcm590xx.o obj-$(CONFIG_MFD_CROS_EC) += cros_ec.o obj-$(CONFIG_MFD_CROS_EC_I2C) += cros_ec_i2c.o obj-$(CONFIG_MFD_CROS_EC_SPI) += cros_ec_spi.o diff --git a/drivers/mfd/bcm590xx.c b/drivers/mfd/bcm590xx.c new file mode 100644 index 0000000..ebfe98a --- /dev/null +++ b/drivers/mfd/bcm590xx.c @@ -0,0 +1,93 @@ +/* + * Broadcom BCM590xx PMU + * + * Copyright 2014 Linaro Limited + * Author: Matt Porter + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static const struct mfd_cell bcm590xx_devs[] = { + { + .name = "bcm590xx-vregs", + }, +}; + +static const struct regmap_config bcm590xx_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = BCM590XX_MAX_REGISTER, + .cache_type = REGCACHE_RBTREE, +}; + +static int bcm590xx_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct bcm590xx *bcm590xx; + int ret = 0; + + bcm590xx = devm_kzalloc(&i2c->dev, sizeof(*bcm590xx), GFP_KERNEL); + if (!bcm590xx) + return -ENOMEM; + + i2c_set_clientdata(i2c, bcm590xx); + bcm590xx->dev = &i2c->dev; + bcm590xx->i2c_client = i2c; + + bcm590xx->regmap = devm_regmap_init_i2c(i2c, &bcm590xx_regmap_config); + if (IS_ERR(bcm590xx->regmap)) { + ret = PTR_ERR(bcm590xx->regmap); + dev_err(&i2c->dev, "regmap initialization failed: %d\n", ret); + return ret; + } + + ret = mfd_add_devices(&i2c->dev, -1, bcm590xx_devs, + ARRAY_SIZE(bcm590xx_devs), NULL, 0, NULL); + if (ret < 0) + dev_err(&i2c->dev, "failed to add sub-devices: %d\n", ret); + + return ret; +} + +static const struct of_device_id bcm590xx_of_match[] = { + { .compatible = "brcm,bcm59056" }, + { } +}; +MODULE_DEVICE_TABLE(i2c, bcm590xx_of_match); + +static const struct i2c_device_id bcm590xx_i2c_id[] = { + { "bcm59056" }, + { } +}; +MODULE_DEVICE_TABLE(i2c, bcm590xx_i2c_id); + +static struct i2c_driver bcm590xx_i2c_driver = { + .driver = { + .name = "bcm590xx", + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(bcm590xx_of_match), + }, + .probe = bcm590xx_i2c_probe, + .id_table = bcm590xx_i2c_id, +}; +module_i2c_driver(bcm590xx_i2c_driver); + +MODULE_AUTHOR("Matt Porter "); +MODULE_DESCRIPTION("BCM590xx multi-function driver"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:bcm590xx"); diff --git a/include/linux/mfd/bcm590xx.h b/include/linux/mfd/bcm590xx.h new file mode 100644 index 0000000..434df2d --- /dev/null +++ b/include/linux/mfd/bcm590xx.h @@ -0,0 +1,31 @@ +/* + * Broadcom BCM590xx PMU + * + * Copyright 2014 Linaro Limited + * Author: Matt Porter + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ + +#ifndef __LINUX_MFD_BCM590XX_H +#define __LINUX_MFD_BCM590XX_H + +#include +#include +#include + +/* max register address */ +#define BCM590XX_MAX_REGISTER 0xe7 + +struct bcm590xx { + struct device *dev; + struct i2c_client *i2c_client; + struct regmap *regmap; + unsigned int id; +}; + +#endif /* __LINUX_MFD_BCM590XX_H */