From patchwork Tue Feb 18 23:17:09 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matt Porter X-Patchwork-Id: 3676601 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 544F2BF13A for ; Tue, 18 Feb 2014 23:19:20 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 57E6D20166 for ; Tue, 18 Feb 2014 23:19:19 +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 433072011E for ; Tue, 18 Feb 2014 23:19:18 +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 1WFtvg-0005Nf-2T; Tue, 18 Feb 2014 23:18:20 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WFtvT-0004CA-PX; Tue, 18 Feb 2014 23:18:07 +0000 Received: from mail-ie0-f169.google.com ([209.85.223.169]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WFtv6-00047z-1n for linux-arm-kernel@lists.infradead.org; Tue, 18 Feb 2014 23:17:44 +0000 Received: by mail-ie0-f169.google.com with SMTP id at1so2787955iec.0 for ; Tue, 18 Feb 2014 15:17:23 -0800 (PST) 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=z1J56k+uYGEuce6Z9iPzu1Cm5Y4ENVk1GHDmDkh4AqQ=; b=col7BFtEna9c3H3rPTtuXGugtz7Guj/kQGMnwCfRizTqCcv5EJqhwBt9QbEG6/gecS NWzkejqhqEW+LTGr9qsENUADBjfLK1q5V1XEvdaGQV7xax5eSf3cy2cOHiUZW8gicthu Bb021Nk9F4zp/qJ8Iqdyv2ai1ldCSPZPo0OSmNBxQd5Z/VzmreLyb4/5v7Ldg6lYM3tT eS455fPONK603eXC5EG6YSf1M6UA5tdYJAZQdg42WemAKXXwRd1+8+cbv7uXYybt1ZXR yKI7v9txMMfLKIt79Y/tjd1nRCHzQBN7fVyMevPBSXPhhuhwo1srC4Ag5LcoZZbGxmey /w1Q== X-Gm-Message-State: ALoCoQkjfgufmJKgozg29woc8xHrWGMcw5hw6NnfFKtOR9i6v/QcxkSyFkLZQLASbGsafOSe/ykU X-Received: by 10.43.98.202 with SMTP id cp10mr24719701icc.28.1392765443102; Tue, 18 Feb 2014 15:17:23 -0800 (PST) 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 gd5sm44551667igd.5.2014.02.18.15.17.21 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 18 Feb 2014 15:17:22 -0800 (PST) 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 v2 2/5] mfd: add bcm590xx pmu driver Date: Tue, 18 Feb 2014 18:17:09 -0500 Message-Id: <1392765432-9111-3-git-send-email-mporter@linaro.org> X-Mailer: git-send-email 1.8.4 In-Reply-To: <1392765432-9111-1-git-send-email-mporter@linaro.org> References: <1392765432-9111-1-git-send-email-mporter@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140218_181744_170786_53AE1071 X-CRM114-Status: GOOD ( 20.05 ) X-Spam-Score: 0.3 (/) 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=-1.9 required=5.0 tests=BAYES_00,KHOP_BIG_TO_CC, RCVD_IN_DNSWL_MED, 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 | 86 ++++++++++++++++++++++++++++++++++++++++++++ include/linux/mfd/bcm590xx.h | 31 ++++++++++++++++ 4 files changed, 126 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..eda60de 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 + bool "Broadcom BCM590xx PMUs" + select MFD_CORE + select REGMAP_I2C + depends on I2C=y + 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..06f6387 --- /dev/null +++ b/drivers/mfd/bcm590xx.c @@ -0,0 +1,86 @@ +/* + * 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 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 = of_platform_populate(i2c->dev.of_node, NULL, NULL, &i2c->dev); + if (ret < 0) + dev_err(&i2c->dev, "of_platform_populate() failed: %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 */