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Commit 94bdc0e2 authored by Rabin Vincent's avatar Rabin Vincent Committed by Russell King
Browse files

ARM: 5973/1: ux500: add gpio support 



Add support for the GPIOs on the U8500, using the plat-nomadik GPIO
driver.

Acked-by: default avatarLinus Walleij <linus.walleij@stericsson.com>
Acked-by: default avatarSrinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: default avatarRabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 1df20afc

arch/arm/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -756,6 +756,7 @@ config ARCH_U8500 
	select GENERIC_TIME

	select GENERIC_CLOCKEVENTS

	select COMMON_CLKDEV

	select ARCH_REQUIRE_GPIOLIB

	help

	  Support for ST-Ericsson's Ux500 architecture

arch/arm/mach-ux500/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -8,6 +8,7 @@ config MACH_U8500_MOP 
	default y

	select ARM_GIC

	select HAS_MTU

	select NOMADIK_GPIO

	help

	  Include support for mop500 development platform

	  based on U8500 architecture. The platform is based

arch/arm/mach-ux500/cpu-u8500.c

+80 −2
Original line number Diff line number Diff line
@@ -13,6 +13,7 @@ 
#include <linux/device.h>

#include <linux/amba/bus.h>

#include <linux/irq.h>

#include <linux/gpio.h>

#include <linux/platform_device.h>

#include <linux/io.h>
@@ -23,9 +24,82 @@ 
#include <mach/hardware.h>

#include <mach/setup.h>



/* add any platform devices here - TODO */

#define GPIO_RESOURCE(block)						\

	{								\

		.start	= U8500_GPIOBANK##block##_BASE,			\

		.end	= U8500_GPIOBANK##block##_BASE + 127,		\

		.flags	= IORESOURCE_MEM,				\

	},								\

	{								\

		.start	= IRQ_GPIO##block,				\

		.end	= IRQ_GPIO##block,				\

		.flags	= IORESOURCE_IRQ,				\

	}



#define GPIO_DEVICE(block)						\

	{								\

		.name 		= "gpio",				\

		.id		= block,				\

		.num_resources 	= 2,					\

		.resource	= &u8500_gpio_resources[block * 2],	\

		.dev = {						\

			.platform_data = &u8500_gpio_data[block],	\

		},							\

	}



#define GPIO_DATA(_name, first)						\

	{								\

		.name 		= _name,				\

		.first_gpio 	= first,				\

		.first_irq 	= NOMADIK_GPIO_TO_IRQ(first),		\

	}



static struct nmk_gpio_platform_data u8500_gpio_data[] = {

	GPIO_DATA("GPIO-0-31", 0),

	GPIO_DATA("GPIO-32-63", 32), /* 37..63 not routed to pin */

	GPIO_DATA("GPIO-64-95", 64),

	GPIO_DATA("GPIO-96-127", 96), /* 97..127 not routed to pin */

	GPIO_DATA("GPIO-128-159", 128),

	GPIO_DATA("GPIO-160-191", 160), /* 172..191 not routed to pin */

	GPIO_DATA("GPIO-192-223", 192),

	GPIO_DATA("GPIO-224-255", 224), /* 231..255 not routed to pin */

	GPIO_DATA("GPIO-256-288", 256), /* 258..288 not routed to pin */

};



static struct resource u8500_gpio_resources[] = {

	GPIO_RESOURCE(0),

	GPIO_RESOURCE(1),

	GPIO_RESOURCE(2),

	GPIO_RESOURCE(3),

	GPIO_RESOURCE(4),

	GPIO_RESOURCE(5),

	GPIO_RESOURCE(6),

	GPIO_RESOURCE(7),

	GPIO_RESOURCE(8),

};



static struct platform_device u8500_gpio_devs[] = {

	GPIO_DEVICE(0),

	GPIO_DEVICE(1),

	GPIO_DEVICE(2),

	GPIO_DEVICE(3),

	GPIO_DEVICE(4),

	GPIO_DEVICE(5),

	GPIO_DEVICE(6),

	GPIO_DEVICE(7),

	GPIO_DEVICE(8),

};



static struct platform_device *platform_devs[] __initdata = {

	/* yet to be added, add i2c0, gpio.. */

	&u8500_gpio_devs[0],

	&u8500_gpio_devs[1],

	&u8500_gpio_devs[2],

	&u8500_gpio_devs[3],

	&u8500_gpio_devs[4],

	&u8500_gpio_devs[5],

	&u8500_gpio_devs[6],

	&u8500_gpio_devs[7],

	&u8500_gpio_devs[8],

};



#define __IO_DEV_DESC(x, sz)	{		\
@@ -49,6 +123,10 @@ static struct map_desc u8500_io_desc[] __initdata = { 
	__IO_DEV_DESC(U8500_CLKRST3_BASE, SZ_4K),

	__IO_DEV_DESC(U8500_CLKRST5_BASE, SZ_4K),

	__IO_DEV_DESC(U8500_CLKRST6_BASE, SZ_4K),

	__IO_DEV_DESC(U8500_GPIO1_BASE, SZ_4K),

	__IO_DEV_DESC(U8500_GPIO2_BASE, SZ_4K),

	__IO_DEV_DESC(U8500_GPIO3_BASE, SZ_4K),

	__IO_DEV_DESC(U8500_GPIO5_BASE, SZ_4K),

};



static struct map_desc u8500ed_io_desc[] __initdata = {

arch/arm/mach-ux500/include/mach/gpio.h

0 → 100644
+12 −0
Original line number Diff line number Diff line 
#ifndef __ASM_ARCH_GPIO_H

#define __ASM_ARCH_GPIO_H



/*

 * 288 (#267 is the highest one actually hooked up) onchip GPIOs, plus enough

 * room for a couple of GPIO expanders.

 */

#define ARCH_NR_GPIOS	350



#include <plat/gpio.h>



#endif /* __ASM_ARCH_GPIO_H */

arch/arm/mach-ux500/include/mach/hardware.h

+12 −0
Original line number Diff line number Diff line
@@ -23,6 +23,8 @@ 


/* typesafe io address */

#define __io_address(n)		__io(IO_ADDRESS(n))

/* used by some plat-nomadik code */

#define io_p2v(n)		__io_address(n)



/*

 * Base address definitions for U8500 Onchip IPs. All the
@@ -128,6 +130,16 @@ 
#define U8500_GPIO1_BASE	(U8500_PER1_BASE + 0xe000)

#define U8500_CLKRST1_BASE	(U8500_PER1_BASE + 0xf000)



#define U8500_GPIOBANK0_BASE	U8500_GPIO1_BASE

#define U8500_GPIOBANK1_BASE	(U8500_GPIO1_BASE + 0x80)

#define U8500_GPIOBANK2_BASE	U8500_GPIO3_BASE

#define U8500_GPIOBANK3_BASE	(U8500_GPIO3_BASE + 0x80)

#define U8500_GPIOBANK4_BASE	(U8500_GPIO3_BASE + 0x100)

#define U8500_GPIOBANK5_BASE	(U8500_GPIO3_BASE + 0x180)

#define U8500_GPIOBANK6_BASE	U8500_GPIO2_BASE

#define U8500_GPIOBANK7_BASE	(U8500_GPIO2_BASE + 0x80)

#define U8500_GPIOBANK8_BASE	U8500_GPIO5_BASE



/* ST-Ericsson modified pl022 id */

#define SSP_PER_ID		0x01080022