From patchwork Wed Nov 4 17:12:15 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Davis X-Patchwork-Id: 540085 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 65EBF140E31 for ; Thu, 5 Nov 2015 04:15:05 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030601AbbKDRNW (ORCPT ); Wed, 4 Nov 2015 12:13:22 -0500 Received: from [198.47.26.152] ([198.47.26.152]:58742 "EHLO comal.ext.ti.com" rhost-flags-FAIL-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S965546AbbKDRNN (ORCPT ); Wed, 4 Nov 2015 12:13:13 -0500 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id tA4HCINn009878; Wed, 4 Nov 2015 11:12:18 -0600 Received: from DFLE72.ent.ti.com (dfle72.ent.ti.com [128.247.5.109]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id tA4HCILN032622; Wed, 4 Nov 2015 11:12:18 -0600 Received: from dlep33.itg.ti.com (157.170.170.75) by DFLE72.ent.ti.com (128.247.5.109) with Microsoft SMTP Server id 14.3.224.2; Wed, 4 Nov 2015 11:12:18 -0600 Received: from legion.dal.design.ti.com (legion.dal.design.ti.com [128.247.22.53]) by dlep33.itg.ti.com (8.14.3/8.13.8) with ESMTP id tA4HCIg5021730; Wed, 4 Nov 2015 11:12:18 -0600 Received: from localhost (uda0226330.am.dhcp.ti.com [128.247.8.252]) by legion.dal.design.ti.com (8.11.7p1+Sun/8.11.7) with ESMTP id tA4HCI927252; Wed, 4 Nov 2015 11:12:18 -0600 (CST) From: "Andrew F. Davis" To: Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Linus Walleij , Alexandre Courbot , Samuel Ortiz , Lee Jones , Liam Girdwood , Mark Brown CC: , , , "Andrew F. Davis" Subject: [PATCH v3 6/6] gpio: tps65086: Add GPIO driver for the TPS65086 PMIC Date: Wed, 4 Nov 2015 11:12:15 -0600 Message-ID: <1446657135-7820-7-git-send-email-afd@ti.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1446657135-7820-1-git-send-email-afd@ti.com> References: <1446657135-7820-1-git-send-email-afd@ti.com> MIME-Version: 1.0 Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Add support for the TPS65086 PMIC GPOs. TPS65086 has four configurable GPOs that can be used for several purposes. Signed-off-by: Andrew F. Davis --- drivers/gpio/Kconfig | 6 +++ drivers/gpio/Makefile | 1 + drivers/gpio/gpio-tps65086.c | 115 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 122 insertions(+) create mode 100644 drivers/gpio/gpio-tps65086.c diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index b4fc9e4..ccb7e0d 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -824,6 +824,12 @@ config GPIO_TIMBERDALE ---help--- Add support for the GPIO IP in the timberdale FPGA. +config GPIO_TPS65086 + tristate "TI TPS65086 GPO" + depends on MFD_TPS65086 + help + This driver supports the GPO on TI TPS65086x PMICs. + config GPIO_TPS6586X bool "TPS6586X GPIO" depends on MFD_TPS6586X diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index f79a7c4..2611c7e 100644 --- a/drivers/gpio/Makefile +++ b/drivers/gpio/Makefile @@ -94,6 +94,7 @@ obj-$(CONFIG_GPIO_TC3589X) += gpio-tc3589x.o obj-$(CONFIG_ARCH_TEGRA) += gpio-tegra.o obj-$(CONFIG_GPIO_TIMBERDALE) += gpio-timberdale.o obj-$(CONFIG_GPIO_PALMAS) += gpio-palmas.o +obj-$(CONFIG_GPIO_TPS65086) += gpio-tps65086.o obj-$(CONFIG_GPIO_TPS6586X) += gpio-tps6586x.o obj-$(CONFIG_GPIO_TPS65910) += gpio-tps65910.o obj-$(CONFIG_GPIO_TPS65912) += gpio-tps65912.o diff --git a/drivers/gpio/gpio-tps65086.c b/drivers/gpio/gpio-tps65086.c new file mode 100644 index 0000000..44d9f86 --- /dev/null +++ b/drivers/gpio/gpio-tps65086.c @@ -0,0 +1,115 @@ +/* + * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/ + * + * Author: Andrew F. Davis + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether expressed or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License version 2 for more details. + * + * Based on the TPS65912 driver + */ + +#include +#include +#include +#include + +#include + +struct tps65086_gpio { + struct gpio_chip gpio_chip; + struct tps65086 *tps; +}; + +static inline struct tps65086_gpio *to_tps65086_gpio(struct gpio_chip *chip) +{ + return container_of(chip, struct tps65086_gpio, gpio_chip); +} + +static int tps65086_gpio_get(struct gpio_chip *gc, unsigned offset) +{ + struct tps65086_gpio *gpio = to_tps65086_gpio(gc); + int ret, val; + + ret = regmap_read(gpio->tps->regmap, TPS65086_GPOCTRL, &val); + if (ret < 0) + return ret; + + return val & BIT(4 + offset); +} + +static void tps65086_gpio_set(struct gpio_chip *gc, unsigned offset, + int value) +{ + struct tps65086_gpio *gpio = to_tps65086_gpio(gc); + + regmap_update_bits(gpio->tps->regmap, TPS65086_GPOCTRL, + BIT(4 + offset), value ? BIT(4 + offset) : 0); +} + +static struct gpio_chip template_chip = { + .label = "tps65086-gpio", + .owner = THIS_MODULE, + .get = tps65086_gpio_get, + .set = tps65086_gpio_set, + .can_sleep = true, + .ngpio = 4, + .base = -1, +}; + +static int tps65086_gpio_probe(struct platform_device *pdev) +{ + struct tps65086_gpio *gpio; + int ret; + + gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL); + if (!gpio) + return -ENOMEM; + + gpio->tps = dev_get_drvdata(pdev->dev.parent); + gpio->gpio_chip = template_chip; + ret = gpiochip_add(&gpio->gpio_chip); + if (ret < 0) { + dev_err(&pdev->dev, "Could not register gpiochip, %d\n", ret); + return ret; + } + + platform_set_drvdata(pdev, gpio); + + return 0; +} + +static int tps65086_gpio_remove(struct platform_device *pdev) +{ + struct tps65086_gpio *gpio = platform_get_drvdata(pdev); + + gpiochip_remove(&gpio->gpio_chip); + + return 0; +} + +static const struct platform_device_id tps65086_gpio_id_table[] = { + { "tps65086-gpio", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(platform, tps65086_gpio_id_table); + +static struct platform_driver tps65086_gpio_driver = { + .driver = { + .name = "tps65086-gpio", + }, + .probe = tps65086_gpio_probe, + .remove = tps65086_gpio_remove, + .id_table = tps65086_gpio_id_table, +}; +module_platform_driver(tps65086_gpio_driver); + +MODULE_AUTHOR("Andrew F. Davis "); +MODULE_DESCRIPTION("TPS65086 GPIO driver"); +MODULE_LICENSE("GPL v2");