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Message-ID: <20100421085524.GA2951@matterhorn.lan>
Date: Wed, 21 Apr 2010 11:55:25 +0300
From: Amit Kucheria <amit.kucheria@...onical.com>
To: Dinh.Nguyen@...escale.com
Cc: linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux@....linux.org.uk, s.hauer@...gutronix.de,
valentin.longchamp@...l.ch, daniel@...aq.de,
grant.likely@...retlab.ca, bryan.wu@...onical.com,
r.herring@...escale.com
Subject: Re: [PATCH 2.6.34-rc5] mx5: Add registration of GPIOs for MX51
Babbage board.
On 10 Apr 20, Dinh.Nguyen@...escale.com wrote:
> From: Dinh Nguyen <Dinh.Nguyen@...escale.com>
>
> Update /plat-mxc/gpio.c to support Freescale's MX51 Babbage HW.
> This patch applies to 2.6.34-rc5.
>
> Signed-off-by: Dinh Nguyen <Dinh.Nguyen@...escale.com>
Acked-by: Amit Kucheria <amit.kucheria@...onical.com>
I'll include this in the mx5 tree to push to Sascha.
>
>
> ---
> arch/arm/mach-mx5/devices.c | 33 +++++++++++++++++++++++++++++++--
> arch/arm/plat-mxc/gpio.c | 5 ++---
> arch/arm/plat-mxc/tzic.c | 4 +++-
> 3 files changed, 36 insertions(+), 6 deletions(-)
>
> diff --git a/arch/arm/mach-mx5/devices.c b/arch/arm/mach-mx5/devices.c
> index d6fd396..5070ae1 100644
> --- a/arch/arm/mach-mx5/devices.c
> +++ b/arch/arm/mach-mx5/devices.c
> @@ -1,5 +1,6 @@
> /*
> * Copyright 2009 Amit Kucheria <amit.kucheria@...onical.com>
> + * Copyright (C) 2010 Freescale Semiconductor, Inc.
> *
> * The code contained herein is licensed under the GNU General Public
> * License. You may obtain a copy of the GNU General Public License
> @@ -10,8 +11,10 @@
> */
>
> #include <linux/platform_device.h>
> +#include <linux/gpio.h>
> #include <mach/hardware.h>
> #include <mach/imx-uart.h>
> +#include <mach/irqs.h>
>
> 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 */
> +static 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, ARRAY_SIZE(mxc_gpio_ports));
> }
> diff --git a/arch/arm/plat-mxc/gpio.c b/arch/arm/plat-mxc/gpio.c
> index 70b2389..71437c6 100644
> --- a/arch/arm/plat-mxc/gpio.c
> +++ b/arch/arm/plat-mxc/gpio.c
> @@ -3,7 +3,7 @@
> * Copyright 2008 Juergen Beisert, kernel@...gutronix.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)
> @@ -289,7 +288,7 @@ 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()) {
> + if (cpu_is_mx1() || cpu_is_mx3() || cpu_is_mx25() || cpu_is_mx51()) {
> /* setup one handler for each entry */
> set_irq_chained_handler(port[i].irq, mx3_gpio_irq_handler);
> set_irq_data(port[i].irq, &port[i]);
> diff --git a/arch/arm/plat-mxc/tzic.c b/arch/arm/plat-mxc/tzic.c
> index afa6709..9b86d2a 100644
> --- a/arch/arm/plat-mxc/tzic.c
> +++ b/arch/arm/plat-mxc/tzic.c
> @@ -1,5 +1,5 @@
> /*
> - * Copyright 2004-2009 Freescale Semiconductor, Inc. All Rights Reserved.
> + * Copyright (C)2004-2010 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
> @@ -19,6 +19,7 @@
> #include <asm/mach/irq.h>
>
> #include <mach/hardware.h>
> +#include <mach/common.h>
>
> /*
> *****************************************
> @@ -144,6 +145,7 @@ void __init tzic_init_irq(void __iomem *irqbase)
> set_irq_handler(i, handle_level_irq);
> set_irq_flags(i, IRQF_VALID);
> }
> + mxc_register_gpios();
>
> pr_info("TrustZone Interrupt Controller (TZIC) initialized\n");
> }
> --
> 1.6.0.4
>
--
----------------------------------------------------------------------
Amit Kucheria, Kernel Engineer || amit.kucheria@...onical.com
----------------------------------------------------------------------
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