From patchwork Tue Jun 15 15:05:46 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: charu@ti.com X-Patchwork-Id: 106227 X-Patchwork-Delegate: khilman@deeprootsystems.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter.kernel.org (8.14.3/8.14.3) with ESMTP id o5FF2b9R029081 for ; Tue, 15 Jun 2010 15:02:39 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758027Ab0FOPC1 (ORCPT ); Tue, 15 Jun 2010 11:02:27 -0400 Received: from arroyo.ext.ti.com ([192.94.94.40]:40976 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758020Ab0FOPC0 (ORCPT ); Tue, 15 Jun 2010 11:02:26 -0400 Received: from dbdp31.itg.ti.com ([172.24.170.98]) by arroyo.ext.ti.com (8.13.7/8.13.7) with ESMTP id o5FF1qhm014805 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 15 Jun 2010 10:01:54 -0500 Received: from localhost.localdomain (localhost [127.0.0.1]) by dbdp31.itg.ti.com (8.13.8/8.13.8) with ESMTP id o5FF1fXD011202; Tue, 15 Jun 2010 20:31:50 +0530 (IST) From: "Varadarajan, Charulatha" To: david-b@pacbell.net, broonie@opensource.wolfsonmicro.com, akpm@linux-foundation.org, linux-omap@vger.kernel.org Cc: paul@pwsan.com, rnayak@ti.com, b-cousson@ti.com, khilman@deeprootsystems.com, tony@atomide.com, Charulatha V Subject: [PATCH 11/13 v3] OMAP: GPIO: Introduce support for OMAP2PLUS chip GPIO init Date: Tue, 15 Jun 2010 20:35:46 +0530 Message-Id: <1276614348-5201-12-git-send-email-charu@ti.com> X-Mailer: git-send-email 1.6.3.3 In-Reply-To: <1276614348-5201-11-git-send-email-charu@ti.com> References: <1276614348-5201-1-git-send-email-charu@ti.com> <1276614348-5201-2-git-send-email-charu@ti.com> <1276614348-5201-3-git-send-email-charu@ti.com> <1276614348-5201-4-git-send-email-charu@ti.com> <1276614348-5201-5-git-send-email-charu@ti.com> <1276614348-5201-6-git-send-email-charu@ti.com> <1276614348-5201-7-git-send-email-charu@ti.com> <1276614348-5201-8-git-send-email-charu@ti.com> <1276614348-5201-9-git-send-email-charu@ti.com> <1276614348-5201-10-git-send-email-charu@ti.com> <1276614348-5201-11-git-send-email-charu@ti.com> Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter.kernel.org [140.211.167.41]); Tue, 15 Jun 2010 15:02:39 +0000 (UTC) diff --git a/arch/arm/mach-omap2/gpio.c b/arch/arm/mach-omap2/gpio.c new file mode 100644 index 0000000..993995a --- /dev/null +++ b/arch/arm/mach-omap2/gpio.c @@ -0,0 +1,104 @@ +/* + * gpio.c - OMAP2PLUS-specific gpio code + * + * Copyright (C) 2010 Texas Instruments, Inc. + * + * Author: + * Charulatha V + * + * 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. + */ + +#include +#include +#include + +#include +#include + +static struct omap_device_pm_latency omap_gpio_latency[] = { + [0] = { + .deactivate_func = omap_device_idle_hwmods, + .activate_func = omap_device_enable_hwmods, + .flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST, + }, +}; + +static int omap2_init_gpio(struct omap_hwmod *oh, void *user) +{ + struct omap_device *od; + struct omap_gpio_platform_data *pdata; + char *name = "omap-gpio"; + static int id; + struct omap_gpio_dev_attr *gpio_dev_data; + + if (!oh) + pr_err("Could not look up omap gpio %d\n", id + 1); + + pdata = kzalloc(sizeof(struct omap_gpio_platform_data), + GFP_KERNEL); + if (!pdata) { + pr_err("Memory allocation failed gpio%d\n", id + 1); + return -ENOMEM; + } + + gpio_dev_data = (struct omap_gpio_dev_attr *)oh->dev_attr; + pdata->gpio_attr = gpio_dev_data; + pdata->method = (int)user; + pdata->virtual_irq_start = IH_GPIO_BASE + 32 * id; + + od = omap_device_build(name, id, oh, pdata, + sizeof(*pdata), omap_gpio_latency, + ARRAY_SIZE(omap_gpio_latency), + false); + WARN(IS_ERR(od), "Cant build omap_device for %s:%s.\n", + name, oh->name); + + id++; + return 0; +} + +static int __init gpio_init(int method) +{ + return omap_hwmod_for_each_by_class("gpio", omap2_init_gpio, + (void *)method); +} + +/* + * gpio_init needs to be done before + * machine_init functions access gpio APIs. + * Hence gpio_init is a postcore_initcall. + */ +#ifdef CONFIG_ARCH_OMAP2 +static int __init omap24xx_gpio_init(void) +{ if (!cpu_is_omap24xx()) + return -EINVAL; + + return gpio_init(METHOD_GPIO_24XX); +} +postcore_initcall(omap24xx_gpio_init); +#endif + +#ifdef CONFIG_ARCH_OMAP3 +static int __init omap3xxx_gpio_init(void) +{ + if (!cpu_is_omap34xx()) + return -EINVAL; + + return gpio_init(METHOD_GPIO_24XX); +} +postcore_initcall(omap3xxx_gpio_init); +#endif + +#ifdef CONFIG_ARCH_OMAP4 +static int __init omap44xx_gpio_init(void) +{ + if (!cpu_is_omap44xx()) + return -EINVAL; + + return gpio_init(METHOD_GPIO_44XX); +} +postcore_initcall(omap44xx_gpio_init); +#endif