From patchwork Wed Apr 23 00:31:49 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Courtney Cavin X-Patchwork-Id: 4037051 Return-Path: X-Original-To: patchwork-linux-arm-msm@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 7810E9F1F4 for ; Wed, 23 Apr 2014 00:30:37 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 2AF2B20219 for ; Wed, 23 Apr 2014 00:30:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AF56A201F2 for ; Wed, 23 Apr 2014 00:30:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751528AbaDWAa1 (ORCPT ); Tue, 22 Apr 2014 20:30:27 -0400 Received: from seldrel01.sonyericsson.com ([212.209.106.2]:15129 "EHLO seldrel01.sonyericsson.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750927AbaDWAa0 (ORCPT ); Tue, 22 Apr 2014 20:30:26 -0400 From: Courtney Cavin To: Samuel Ortiz , Lee Jones CC: Josh Cartwright , Grant Likely , Rob Herring , , , Subject: [PATCH 1/2] mfd: pm8x41: add support for Qualcomm 8x41 PMICs Date: Tue, 22 Apr 2014 17:31:49 -0700 Message-ID: <1398213110-28135-1-git-send-email-courtney.cavin@sonymobile.com> X-Mailer: git-send-email 1.8.1.5 MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, 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 From: Josh Cartwright The Qualcomm 8941 and 8841 PMICs are components used with the Snapdragon 800 series SoC family. This driver exists largely as a glue mfd component, it exists to be an owner of an SPMI regmap for children devices described in device tree. Signed-off-by: Josh Cartwright Signed-off-by: Courtney Cavin --- drivers/mfd/Kconfig | 13 +++++++++++ drivers/mfd/Makefile | 1 + drivers/mfd/pm8x41.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 77 insertions(+) create mode 100644 drivers/mfd/pm8x41.c diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 3383412..f5ff799 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -502,6 +502,19 @@ config MFD_PM8921_CORE Say M here if you want to include support for PM8921 chip as a module. This will build a module called "pm8921-core". +config MFD_PM8X41 + bool "Qualcomm PM8x41 PMIC" + depends on ARCH_QCOM + select REGMAP_SPMI + help + This enables basic support for the Qualcomm 8941 and 8841 PMICs. + These PMICs are currently used with the Snapdragon 800 series of + SoCs. Note, that this will only be useful paired with descriptions + of the independent functions as children nodes in the device tree. + + Say M here if you want to include support for the PM8x41 series as a + module. The module will be called "pm8x41". + config MFD_RDC321X tristate "RDC R-321x southbridge" select MFD_CORE diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 2851275..f0df41d 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -151,6 +151,7 @@ obj-$(CONFIG_MFD_SI476X_CORE) += si476x-core.o obj-$(CONFIG_MFD_CS5535) += cs5535-mfd.o obj-$(CONFIG_MFD_OMAP_USB_HOST) += omap-usb-host.o omap-usb-tll.o obj-$(CONFIG_MFD_PM8921_CORE) += pm8921-core.o ssbi.o +obj-$(CONFIG_MFD_PM8X41) += pm8x41.o obj-$(CONFIG_TPS65911_COMPARATOR) += tps65911-comparator.o obj-$(CONFIG_MFD_TPS65090) += tps65090.o obj-$(CONFIG_MFD_AAT2870_CORE) += aat2870-core.o diff --git a/drivers/mfd/pm8x41.c b/drivers/mfd/pm8x41.c new file mode 100644 index 0000000..c85e0d6 --- /dev/null +++ b/drivers/mfd/pm8x41.c @@ -0,0 +1,63 @@ +/* Copyright (c) 2013, The Linux Foundation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#include +#include +#include +#include +#include + +static const struct regmap_config pm8x41_regmap_config = { + .reg_bits = 16, + .val_bits = 8, + .max_register = 0xFFFF, +}; + +static int pm8x41_remove_child(struct device *dev, void *unused) +{ + platform_device_unregister(to_platform_device(dev)); + return 0; +} + +static void pm8x41_remove(struct spmi_device *sdev) +{ + device_for_each_child(&sdev->dev, NULL, pm8x41_remove_child); +} + +static int pm8x41_probe(struct spmi_device *sdev) +{ + struct regmap *regmap; + + regmap = devm_regmap_init_spmi_ext(sdev, &pm8x41_regmap_config); + if (IS_ERR(regmap)) { + dev_dbg(&sdev->dev, "regmap creation failed.\n"); + return PTR_ERR(regmap); + } + + return of_platform_populate(sdev->dev.of_node, NULL, NULL, &sdev->dev); +} + +static const struct of_device_id pm8x41_id_table[] = { + { .compatible = "qcom,pm8841", }, + { .compatible = "qcom,pm8941", }, + {}, +}; +MODULE_DEVICE_TABLE(of, pm8x41_id_table); + +static struct spmi_driver pm8x41_driver = { + .probe = pm8x41_probe, + .remove = pm8x41_remove, + .driver = { + .name = "pm8x41", + .of_match_table = pm8x41_id_table, + }, +}; +module_spmi_driver(pm8x41_driver);