From patchwork Thu Nov 25 12:48:29 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: 356612 X-Patchwork-Delegate: tony@atomide.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id oAPCn0da023364 for ; Thu, 25 Nov 2010 12:49:00 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753072Ab0KYMs4 (ORCPT ); Thu, 25 Nov 2010 07:48:56 -0500 Received: from bear.ext.ti.com ([192.94.94.41]:36983 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752961Ab0KYMs4 (ORCPT ); Thu, 25 Nov 2010 07:48:56 -0500 Received: from dbdp31.itg.ti.com ([172.24.170.98]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id oAPCmmjJ027895 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 25 Nov 2010 06:48:50 -0600 Received: from localhost.localdomain (localhost [127.0.0.1]) by dbdp31.itg.ti.com (8.13.8/8.13.8) with ESMTP id oAPCmei4027759; Thu, 25 Nov 2010 18:18:46 +0530 (IST) From: "Varadarajan, Charulatha" To: linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: khilman@deeprootsystems.com, paul@pwsan.com, b-cousson@ti.com, tony@atomide.com, p-basak2@ti.com, "Varadarajan, Charulatha" Subject: [PATCH v8 02/11] OMAP15xx: GPIO: Introduce support for GPIO init Date: Thu, 25 Nov 2010 18:18:29 +0530 Message-Id: <1290689318-10191-3-git-send-email-charu@ti.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1290689318-10191-1-git-send-email-charu@ti.com> References: <1290689318-10191-1-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 (demeter1.kernel.org [140.211.167.41]); Thu, 25 Nov 2010 12:49:00 +0000 (UTC) diff --git a/arch/arm/mach-omap1/gpio15xx.c b/arch/arm/mach-omap1/gpio15xx.c new file mode 100644 index 0000000..dbd8168 --- /dev/null +++ b/arch/arm/mach-omap1/gpio15xx.c @@ -0,0 +1,98 @@ +/* + * OMAP15xx specific gpio init + * + * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/ + * + * 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 as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include + +#define OMAP1_MPUIO_VBASE OMAP1_MPUIO_BASE +#define OMAP1510_GPIO_BASE 0xFFFCE000 + +/* gpio1 */ +static struct __initdata resource omap15xx_mpu_gpio_resources[] = { + { + .start = OMAP1_MPUIO_VBASE, + .end = OMAP1_MPUIO_VBASE + SZ_2K - 1, + .flags = IORESOURCE_MEM, + }, + { + .start = INT_MPUIO, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct __initdata omap_gpio_platform_data omap15xx_mpu_gpio_config = { + .virtual_irq_start = IH_MPUIO_BASE, + .bank_type = METHOD_MPUIO, + .bank_width = 16, +}; + +static struct __initdata platform_device omap15xx_mpu_gpio = { + .name = "omap_gpio", + .id = 0, + .dev = { + .platform_data = &omap15xx_mpu_gpio_config, + }, + .num_resources = ARRAY_SIZE(omap15xx_mpu_gpio_resources), + .resource = omap15xx_mpu_gpio_resources, +}; + +/* gpio2 */ +static struct __initdata resource omap15xx_gpio_resources[] = { + { + .start = OMAP1510_GPIO_BASE, + .end = OMAP1510_GPIO_BASE + SZ_2K - 1, + .flags = IORESOURCE_MEM, + }, + { + .start = INT_GPIO_BANK1, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct __initdata omap_gpio_platform_data omap15xx_gpio_config = { + .virtual_irq_start = IH_GPIO_BASE, + .bank_type = METHOD_GPIO_1510, + .bank_width = 16, +}; + +static struct __initdata platform_device omap15xx_gpio = { + .name = "omap_gpio", + .id = 1, + .dev = { + .platform_data = &omap15xx_gpio_config, + }, + .num_resources = ARRAY_SIZE(omap15xx_gpio_resources), + .resource = omap15xx_gpio_resources, +}; + +/* + * omap15xx_gpio_init needs to be done before + * machine_init functions access gpio APIs. + * Hence omap15xx_gpio_init is a postcore_initcall. + */ +static int __init omap15xx_gpio_init(void) +{ + if (!cpu_is_omap15xx()) + return -EINVAL; + + platform_device_register(&omap15xx_mpu_gpio); + platform_device_register(&omap15xx_gpio); + + gpio_bank_count = 2; + return 0; +} +postcore_initcall(omap15xx_gpio_init); diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c index 48bccf2..610787c 100644 --- a/arch/arm/plat-omap/gpio.c +++ b/arch/arm/plat-omap/gpio.c @@ -205,13 +205,6 @@ struct gpio_bank { u32 dbck_enable_mask; }; -#define METHOD_MPUIO 0 -#define METHOD_GPIO_1510 1 -#define METHOD_GPIO_1610 2 -#define METHOD_GPIO_7XX 3 -#define METHOD_GPIO_24XX 5 -#define METHOD_GPIO_44XX 6 - #ifdef CONFIG_ARCH_OMAP16XX static struct gpio_bank gpio_bank_1610[5] = { { OMAP1_MPUIO_VBASE, NULL, INT_MPUIO, IH_MPUIO_BASE, @@ -335,7 +328,8 @@ static struct gpio_bank gpio_bank_44xx[6] = { #endif static struct gpio_bank *gpio_bank; -static int gpio_bank_count; +/* TODO: Analyze removing gpio_bank_count usage from driver code */ +int gpio_bank_count; static inline struct gpio_bank *get_gpio_bank(int gpio) { diff --git a/arch/arm/plat-omap/include/plat/gpio.h b/arch/arm/plat-omap/include/plat/gpio.h index de1c604..5bef86d 100644 --- a/arch/arm/plat-omap/include/plat/gpio.h +++ b/arch/arm/plat-omap/include/plat/gpio.h @@ -27,6 +27,7 @@ #define __ASM_ARCH_OMAP_GPIO_H #include +#include #include #define OMAP1_MPUIO_BASE 0xfffb5000 @@ -71,6 +72,23 @@ IH_MPUIO_BASE + ((nr) & 0x0f) : \ IH_GPIO_BASE + (nr)) +#define METHOD_MPUIO 0 +#define METHOD_GPIO_1510 1 +#define METHOD_GPIO_1610 2 +#define METHOD_GPIO_7XX 3 +#define METHOD_GPIO_24XX 5 +#define METHOD_GPIO_44XX 6 + +struct omap_gpio_platform_data { + u16 virtual_irq_start; + int bank_type; + int bank_width; /* GPIO bank width */ + bool dbck_flag; /* dbck required or not - True for OMAP3&4 */ +}; + +/* TODO: Analyze removing gpio_bank_count usage from driver code */ +extern int gpio_bank_count; + extern int omap_gpio_init(void); /* Call from board init only */ extern void omap2_gpio_prepare_for_idle(int power_state); extern void omap2_gpio_resume_after_idle(void);