Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753440Ab0DMQLy (ORCPT ); Tue, 13 Apr 2010 12:11:54 -0400 Received: from az33egw02.freescale.net ([192.88.158.103]:61546 "EHLO az33egw02.freescale.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753389Ab0DMQLw (ORCPT ); Tue, 13 Apr 2010 12:11:52 -0400 From: Dinh.Nguyen@freescale.com To: linux-kernel@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, linux@arm.linux.org.uk, s.hauer@pengutronix.de, valentin.longchamp@epfl.ch, daniel@caiaq.de, grant.likely@secretlab.ca, r.herring@freescale.com, bryan.wu@canonical.com, amit.kucheria@canonical.com, Dinh Nguyen Subject: [PATCH 2.6.34-rc4 1/8] mx5: Add registration of GPIOs for MX51 Babbage board. Date: Tue, 13 Apr 2010 11:10:24 -0500 Message-Id: <1271175030-3635-1-git-send-email-Dinh.Nguyen@freescale.com> X-Mailer: git-send-email 1.6.0.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5627 Lines: 171 From: Dinh Nguyen Update /plat-mxc/gpio.c to support Freescale's MX51 Babbage HW. This patch applies to 2.6.34-rc4. Signed-off-by: Dinh Nguyen --- arch/arm/mach-mx5/board-mx51_babbage.c | 5 +++- arch/arm/mach-mx5/devices.c | 33 ++++++++++++++++++++++++++++++- arch/arm/plat-mxc/gpio.c | 32 +++++++++++++++++++++++++----- 3 files changed, 61 insertions(+), 9 deletions(-) diff --git a/arch/arm/mach-mx5/board-mx51_babbage.c b/arch/arm/mach-mx5/board-mx51_babbage.c index ee67a71..afbe400 100644 --- a/arch/arm/mach-mx5/board-mx51_babbage.c +++ b/arch/arm/mach-mx5/board-mx51_babbage.c @@ -1,5 +1,5 @@ /* - * Copyright 2009 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright (C) 2009-2010 Freescale Semiconductor, Inc. All Rights Reserved. * Copyright (C) 2009-2010 Amit Kucheria * * The code contained herein is licensed under the GNU General Public @@ -12,6 +12,7 @@ #include #include +#include #include #include @@ -75,6 +76,8 @@ static void __init mxc_board_init(void) ARRAY_SIZE(mx51babbage_pads)); mxc_init_imx_uart(); platform_add_devices(devices, ARRAY_SIZE(devices)); + + mxc_register_gpios(); } static void __init mx51_babbage_timer_init(void) diff --git a/arch/arm/mach-mx5/devices.c b/arch/arm/mach-mx5/devices.c index d6fd396..73f2342 100644 --- a/arch/arm/mach-mx5/devices.c +++ b/arch/arm/mach-mx5/devices.c @@ -1,5 +1,6 @@ /* * Copyright 2009 Amit Kucheria + * Copyright (C) 2010 Freescale Semiconductor, Inc. All Rights Reserved. * * The code contained herein is licensed under the GNU General Public * License. You may obtain a copy of the GNU General Public License @@ -11,7 +12,9 @@ #include #include +#include #include +#include static struct resource uart0[] = { { @@ -89,8 +92,34 @@ struct platform_device mxc_fec_device = { .resource = mxc_fec_resources, }; -/* Dummy definition to allow compiling in AVIC and TZIC simultaneously */ +struct mxc_gpio_port mxc_gpio_ports[] = { + { + .chip.label = "gpio-0", + .base = MX51_IO_ADDRESS(MX51_GPIO1_BASE_ADDR), + .irq = MX51_MXC_INT_GPIO1_LOW, + .virtual_irq_start = MXC_GPIO_IRQ_START + }, + { + .chip.label = "gpio-1", + .base = MX51_IO_ADDRESS(MX51_GPIO2_BASE_ADDR), + .irq = MX51_MXC_INT_GPIO2_LOW, + .virtual_irq_start = MXC_GPIO_IRQ_START + 32 * 1 + }, + { + .chip.label = "gpio-2", + .base = MX51_IO_ADDRESS(MX51_GPIO3_BASE_ADDR), + .irq = MX51_MXC_INT_GPIO3_LOW, + .virtual_irq_start = MXC_GPIO_IRQ_START + 32 * 2 + }, + { + .chip.label = "gpio-3", + .base = MX51_IO_ADDRESS(MX51_GPIO4_BASE_ADDR), + .irq = MX51_MXC_INT_GPIO4_LOW, + .virtual_irq_start = MXC_GPIO_IRQ_START + 32 * 3 + }, +}; + int __init mxc_register_gpios(void) { - return 0; + return mxc_gpio_init(mxc_gpio_ports, 4); } diff --git a/arch/arm/plat-mxc/gpio.c b/arch/arm/plat-mxc/gpio.c index 70b2389..1df23b2 100644 --- a/arch/arm/plat-mxc/gpio.c +++ b/arch/arm/plat-mxc/gpio.c @@ -3,7 +3,7 @@ * Copyright 2008 Juergen Beisert, kernel@pengutronix.de * * Based on code from Freescale, - * Copyright 2004-2006 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright (C) 2004-2010 Freescale Semiconductor, Inc. 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 @@ -38,7 +38,6 @@ static int gpio_table_size; #define GPIO_ICR2 (cpu_is_mx1_mx2() ? 0x2C : 0x10) #define GPIO_IMR (cpu_is_mx1_mx2() ? 0x30 : 0x14) #define GPIO_ISR (cpu_is_mx1_mx2() ? 0x34 : 0x18) -#define GPIO_ISR (cpu_is_mx1_mx2() ? 0x34 : 0x18) #define GPIO_INT_LOW_LEV (cpu_is_mx1_mx2() ? 0x3 : 0x0) #define GPIO_INT_HIGH_LEV (cpu_is_mx1_mx2() ? 0x2 : 0x1) @@ -171,6 +170,25 @@ static void mxc_gpio_irq_handler(struct mxc_gpio_port *port, u32 irq_stat) } } +/* one interrupt *per* gpio port */ +static void mx5_gpio_irq_handler(u32 irq, struct irq_desc *desc) +{ + u32 irq_stat; + u32 mask = 0xFFFFFFFF; + struct mxc_gpio_port *port = (struct mxc_gpio_port *)get_irq_data(irq); + +#ifdef MXC_GPIO_SPLIT_IRQ_2 + if (irq == port->irq) + mask = 0x0000FFFF; + else + mask = 0xFFFF0000; +#endif + + irq_stat = __raw_readl(port->base + GPIO_ISR) & + (__raw_readl(port->base + GPIO_IMR) & mask); + mxc_gpio_irq_handler(port, irq_stat); +} + /* MX1 and MX3 has one interrupt *per* gpio port */ static void mx3_gpio_irq_handler(u32 irq, struct irq_desc *desc) { @@ -289,11 +307,13 @@ int __init mxc_gpio_init(struct mxc_gpio_port *port, int cnt) /* its a serious configuration bug when it fails */ BUG_ON( gpiochip_add(&port[i].chip) < 0 ); - if (cpu_is_mx1() || cpu_is_mx3() || cpu_is_mx25()) { - /* setup one handler for each entry */ + /* setup one handler for each entry */ + if (cpu_is_mx1() || cpu_is_mx3() || cpu_is_mx25()) set_irq_chained_handler(port[i].irq, mx3_gpio_irq_handler); - set_irq_data(port[i].irq, &port[i]); - } + else if (cpu_is_mx51()) + set_irq_chained_handler(port[i].irq, mx5_gpio_irq_handler); + + set_irq_data(port[i].irq, &port[i]); } if (cpu_is_mx2()) { -- 1.6.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/