From patchwork Fri Oct 30 22:28:08 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Davis X-Patchwork-Id: 538538 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 A7A4D140324 for ; Sat, 31 Oct 2015 09:29:43 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1031320AbbJ3W2k (ORCPT ); Fri, 30 Oct 2015 18:28:40 -0400 Received: from bear.ext.ti.com ([192.94.94.41]:56580 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1031304AbbJ3W2i (ORCPT ); Fri, 30 Oct 2015 18:28:38 -0400 Received: from dflxv15.itg.ti.com ([128.247.5.124]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id t9UMSKWX027819; Fri, 30 Oct 2015 17:28:20 -0500 Received: from DLEE70.ent.ti.com (dlemailx.itg.ti.com [157.170.170.113]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id t9UMSJOk004921; Fri, 30 Oct 2015 17:28:19 -0500 Received: from dflp33.itg.ti.com (10.64.6.16) by DLEE70.ent.ti.com (157.170.170.113) with Microsoft SMTP Server id 14.3.224.2; Fri, 30 Oct 2015 17:28:20 -0500 Received: from legion.dal.design.ti.com (legion.dal.design.ti.com [128.247.22.53]) by dflp33.itg.ti.com (8.14.3/8.13.8) with ESMTP id t9UMSJR0014607; Fri, 30 Oct 2015 17:28:19 -0500 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 t9UMSJ925311; Fri, 30 Oct 2015 17:28:19 -0500 (CDT) 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 v6 5/5] gpio: tps65912: Add GPIO driver for the TPS65912 PMIC Date: Fri, 30 Oct 2015 17:28:08 -0500 Message-ID: <1446244088-28281-6-git-send-email-afd@ti.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1446244088-28281-1-git-send-email-afd@ti.com> References: <1446244088-28281-1-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 This patch adds support for the TPS65912 PMIC GPIOs. TPS65912 has five configurable GPIOs that can be used for several purposes. Signed-off-by: Andrew F. Davis Reviewed-by: Linus Walleij --- drivers/gpio/Kconfig | 6 ++ drivers/gpio/Makefile | 1 + drivers/gpio/gpio-tps65912.c | 139 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 146 insertions(+) create mode 100644 drivers/gpio/gpio-tps65912.c diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index fb28483..82218fa 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -838,6 +838,12 @@ config GPIO_TPS65910 Select this option to enable GPIO driver for the TPS65910 chip family. +config GPIO_TPS65912 + tristate "TI TPS65912 GPIO" + depends on MFD_TPS65912 + help + This driver supports TPS65912 gpio chip + config GPIO_TWL4030 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" depends on TWL4030_CORE diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index 605bf89..f79a7c4 100644 --- a/drivers/gpio/Makefile +++ b/drivers/gpio/Makefile @@ -96,6 +96,7 @@ obj-$(CONFIG_GPIO_TIMBERDALE) += gpio-timberdale.o obj-$(CONFIG_GPIO_PALMAS) += gpio-palmas.o obj-$(CONFIG_GPIO_TPS6586X) += gpio-tps6586x.o obj-$(CONFIG_GPIO_TPS65910) += gpio-tps65910.o +obj-$(CONFIG_GPIO_TPS65912) += gpio-tps65912.o obj-$(CONFIG_GPIO_TS5500) += gpio-ts5500.o obj-$(CONFIG_GPIO_TWL4030) += gpio-twl4030.o obj-$(CONFIG_GPIO_TWL6040) += gpio-twl6040.o diff --git a/drivers/gpio/gpio-tps65912.c b/drivers/gpio/gpio-tps65912.c new file mode 100644 index 0000000..8d2d442 --- /dev/null +++ b/drivers/gpio/gpio-tps65912.c @@ -0,0 +1,139 @@ +/* + * TI TPS65912x GPIO Driver + * + * 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 Arizona GPIO driver and the previous TPS65912 driver by + * Margarita Olaya Cabrera + */ + +#include +#include +#include + +#include + +struct tps65912_gpio { + struct gpio_chip gpio_chip; + struct tps65912 *tps; +}; + +static inline struct tps65912_gpio *to_tps65912_gpio(struct gpio_chip *chip) +{ + return container_of(chip, struct tps65912_gpio, gpio_chip); +} + +static int tps65912_gpio_get(struct gpio_chip *gc, unsigned offset) +{ + struct tps65912_gpio *gpio = to_tps65912_gpio(gc); + int ret, val; + + ret = regmap_read(gpio->tps->regmap, TPS65912_GPIO1 + offset, &val); + if (ret < 0) + return ret; + + return val & GPIO_STS_MASK; +} + +static void tps65912_gpio_set(struct gpio_chip *gc, unsigned offset, + int value) +{ + struct tps65912_gpio *gpio = to_tps65912_gpio(gc); + + regmap_update_bits(gpio->tps->regmap, TPS65912_GPIO1 + offset, + GPIO_SET_MASK, value ? GPIO_SET_MASK : 0); +} + +static int tps65912_gpio_output(struct gpio_chip *gc, unsigned offset, + int value) +{ + struct tps65912_gpio *gpio = to_tps65912_gpio(gc); + + /* Set the initial value */ + tps65912_gpio_set(gc, offset, value); + + return regmap_update_bits(gpio->tps->regmap, TPS65912_GPIO1 + offset, + GPIO_CFG_MASK, GPIO_CFG_MASK); +} + +static int tps65912_gpio_input(struct gpio_chip *gc, unsigned offset) +{ + struct tps65912_gpio *gpio = to_tps65912_gpio(gc); + + return regmap_update_bits(gpio->tps->regmap, TPS65912_GPIO1 + offset, + GPIO_CFG_MASK, 0); +} + +static struct gpio_chip template_chip = { + .label = "tps65912-gpio", + .owner = THIS_MODULE, + .direction_input = tps65912_gpio_input, + .direction_output = tps65912_gpio_output, + .get = tps65912_gpio_get, + .set = tps65912_gpio_set, + .can_sleep = true, + .ngpio = 5, + .base = -1, +}; + +static int tps65912_gpio_probe(struct platform_device *pdev) +{ + struct tps65912_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 tps65912_gpio_remove(struct platform_device *pdev) +{ + struct tps65912_gpio *gpio = platform_get_drvdata(pdev); + + gpiochip_remove(&gpio->gpio_chip); + + return 0; +} + +static const struct platform_device_id tps65912_gpio_id_table[] = { + { "tps65912-gpio", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(platform, tps65912_gpio_id_table); + +static struct platform_driver tps65912_gpio_driver = { + .driver = { + .name = "tps65912-gpio", + }, + .probe = tps65912_gpio_probe, + .remove = tps65912_gpio_remove, + .id_table = tps65912_gpio_id_table, +}; +module_platform_driver(tps65912_gpio_driver); + +MODULE_AUTHOR("Andrew F. Davis "); +MODULE_DESCRIPTION("TPS65912 GPIO driver"); +MODULE_LICENSE("GPL v2");