Commit 7b85b867 authored by Linus Walleij's avatar Linus Walleij

ARM: plat-iop: instantiate GPIO from platform device

This converts the IOP32x and IOP33x platforms to pass their
base address offset by a resource attached to a platform device
instead of using static offset macros implicitly passed
through <linux/gpio.h> including <mach/gpio.h>. Delete the
local <mach/gpio.h> and <asm/hardware/iop3xx-gpio.h> headers
and remove the selection of NEED_MACH_GPIO_H.

Pass the virtual address as a resource in the platform device
at this point for bisectability, next patch will pass the
physical address as is custom.

Cc: Lennert Buytenhek <kernel@wantstofly.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Mikael Pettersson <mikpe@it.uu.se>
Tested-by: default avatarAaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 51a97d82
...@@ -458,7 +458,6 @@ config ARCH_IOP32X ...@@ -458,7 +458,6 @@ config ARCH_IOP32X
select ARCH_REQUIRE_GPIOLIB select ARCH_REQUIRE_GPIOLIB
select CPU_XSCALE select CPU_XSCALE
select GPIO_IOP select GPIO_IOP
select NEED_MACH_GPIO_H
select NEED_RET_TO_USER select NEED_RET_TO_USER
select PCI select PCI
select PLAT_IOP select PLAT_IOP
...@@ -472,7 +471,6 @@ config ARCH_IOP33X ...@@ -472,7 +471,6 @@ config ARCH_IOP33X
select ARCH_REQUIRE_GPIOLIB select ARCH_REQUIRE_GPIOLIB
select CPU_XSCALE select CPU_XSCALE
select GPIO_IOP select GPIO_IOP
select NEED_MACH_GPIO_H
select NEED_RET_TO_USER select NEED_RET_TO_USER
select PCI select PCI
select PLAT_IOP select PLAT_IOP
......
/*
* arch/arm/include/asm/hardware/iop3xx-gpio.h
*
* IOP3xx GPIO wrappers
*
* Copyright (c) 2008 Arnaud Patard <arnaud.patard@rtp-net.org>
* Based on IXP4XX gpio.h file
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef __ASM_ARM_HARDWARE_IOP3XX_GPIO_H
#define __ASM_ARM_HARDWARE_IOP3XX_GPIO_H
#include <mach/hardware.h>
#include <asm-generic/gpio.h>
#endif
...@@ -18,10 +18,6 @@ ...@@ -18,10 +18,6 @@
/* /*
* IOP3XX GPIO handling * IOP3XX GPIO handling
*/ */
#define GPIO_IN 0
#define GPIO_OUT 1
#define GPIO_LOW 0
#define GPIO_HIGH 1
#define IOP3XX_GPIO_LINE(x) (x) #define IOP3XX_GPIO_LINE(x) (x)
#ifndef __ASSEMBLY__ #ifndef __ASSEMBLY__
...@@ -165,11 +161,6 @@ extern int iop3xx_get_init_atu(void); ...@@ -165,11 +161,6 @@ extern int iop3xx_get_init_atu(void);
/* PERCR0 DOESN'T EXIST - index from 1! */ /* PERCR0 DOESN'T EXIST - index from 1! */
#define IOP3XX_PERCR0 (volatile u32 *)IOP3XX_REG_ADDR(0x0710) #define IOP3XX_PERCR0 (volatile u32 *)IOP3XX_REG_ADDR(0x0710)
/* General Purpose I/O */
#define IOP3XX_GPOE (volatile u32 *)IOP3XX_GPIO_REG(0x0000)
#define IOP3XX_GPID (volatile u32 *)IOP3XX_GPIO_REG(0x0004)
#define IOP3XX_GPOD (volatile u32 *)IOP3XX_GPIO_REG(0x0008)
/* Timers */ /* Timers */
#define IOP3XX_TU_TMR0 (volatile u32 *)IOP3XX_TIMER_REG(0x0000) #define IOP3XX_TU_TMR0 (volatile u32 *)IOP3XX_TIMER_REG(0x0000)
#define IOP3XX_TU_TMR1 (volatile u32 *)IOP3XX_TIMER_REG(0x0004) #define IOP3XX_TU_TMR1 (volatile u32 *)IOP3XX_TIMER_REG(0x0004)
......
...@@ -32,6 +32,7 @@ ...@@ -32,6 +32,7 @@
#include <asm/mach/time.h> #include <asm/mach/time.h>
#include <asm/mach-types.h> #include <asm/mach-types.h>
#include <mach/time.h> #include <mach/time.h>
#include "gpio-iop32x.h"
static void __init em7210_timer_init(void) static void __init em7210_timer_init(void)
{ {
...@@ -183,6 +184,7 @@ void em7210_power_off(void) ...@@ -183,6 +184,7 @@ void em7210_power_off(void)
static void __init em7210_init_machine(void) static void __init em7210_init_machine(void)
{ {
register_iop32x_gpio();
platform_device_register(&em7210_serial_device); platform_device_register(&em7210_serial_device);
platform_device_register(&iop3xx_i2c0_device); platform_device_register(&iop3xx_i2c0_device);
platform_device_register(&iop3xx_i2c1_device); platform_device_register(&iop3xx_i2c1_device);
......
...@@ -34,6 +34,7 @@ ...@@ -34,6 +34,7 @@
#include <asm/mach-types.h> #include <asm/mach-types.h>
#include <asm/page.h> #include <asm/page.h>
#include <mach/time.h> #include <mach/time.h>
#include "gpio-iop32x.h"
/* /*
* GLAN Tank timer tick configuration. * GLAN Tank timer tick configuration.
...@@ -187,6 +188,7 @@ static void glantank_power_off(void) ...@@ -187,6 +188,7 @@ static void glantank_power_off(void)
static void __init glantank_init_machine(void) static void __init glantank_init_machine(void)
{ {
register_iop32x_gpio();
platform_device_register(&iop3xx_i2c0_device); platform_device_register(&iop3xx_i2c0_device);
platform_device_register(&iop3xx_i2c1_device); platform_device_register(&iop3xx_i2c1_device);
platform_device_register(&glantank_flash_device); platform_device_register(&glantank_flash_device);
......
static struct resource iop32x_gpio_res[] = {
DEFINE_RES_MEM((IOP3XX_PERIPHERAL_VIRT_BASE + 0x07c4), 0x10),
};
static inline void register_iop32x_gpio(void)
{
platform_device_register_simple("gpio-iop", 0,
iop32x_gpio_res,
ARRAY_SIZE(iop32x_gpio_res));
}
#ifndef __ASM_ARCH_IOP32X_GPIO_H
#define __ASM_ARCH_IOP32X_GPIO_H
#include <asm/hardware/iop3xx-gpio.h>
#endif
...@@ -19,7 +19,6 @@ ...@@ -19,7 +19,6 @@
* Peripherals that are shared between the iop32x and iop33x but * Peripherals that are shared between the iop32x and iop33x but
* located at different addresses. * located at different addresses.
*/ */
#define IOP3XX_GPIO_REG(reg) (IOP3XX_PERIPHERAL_VIRT_BASE + 0x07c4 + (reg))
#define IOP3XX_TIMER_REG(reg) (IOP3XX_PERIPHERAL_VIRT_BASE + 0x07e0 + (reg)) #define IOP3XX_TIMER_REG(reg) (IOP3XX_PERIPHERAL_VIRT_BASE + 0x07e0 + (reg))
#include <asm/hardware/iop3xx.h> #include <asm/hardware/iop3xx.h>
......
...@@ -37,6 +37,7 @@ ...@@ -37,6 +37,7 @@
#include <asm/page.h> #include <asm/page.h>
#include <asm/pgtable.h> #include <asm/pgtable.h>
#include <mach/time.h> #include <mach/time.h>
#include "gpio-iop32x.h"
/* /*
* Until March of 2007 iq31244 platforms and ep80219 platforms shared the * Until March of 2007 iq31244 platforms and ep80219 platforms shared the
...@@ -283,6 +284,7 @@ void ep80219_power_off(void) ...@@ -283,6 +284,7 @@ void ep80219_power_off(void)
static void __init iq31244_init_machine(void) static void __init iq31244_init_machine(void)
{ {
register_iop32x_gpio();
platform_device_register(&iop3xx_i2c0_device); platform_device_register(&iop3xx_i2c0_device);
platform_device_register(&iop3xx_i2c1_device); platform_device_register(&iop3xx_i2c1_device);
platform_device_register(&iq31244_flash_device); platform_device_register(&iq31244_flash_device);
......
...@@ -33,6 +33,7 @@ ...@@ -33,6 +33,7 @@
#include <asm/page.h> #include <asm/page.h>
#include <asm/pgtable.h> #include <asm/pgtable.h>
#include <mach/time.h> #include <mach/time.h>
#include "gpio-iop32x.h"
/* /*
* IQ80321 timer tick configuration. * IQ80321 timer tick configuration.
...@@ -170,6 +171,7 @@ static struct platform_device iq80321_serial_device = { ...@@ -170,6 +171,7 @@ static struct platform_device iq80321_serial_device = {
static void __init iq80321_init_machine(void) static void __init iq80321_init_machine(void)
{ {
register_iop32x_gpio();
platform_device_register(&iop3xx_i2c0_device); platform_device_register(&iop3xx_i2c0_device);
platform_device_register(&iop3xx_i2c1_device); platform_device_register(&iop3xx_i2c1_device);
platform_device_register(&iq80321_flash_device); platform_device_register(&iq80321_flash_device);
......
...@@ -41,6 +41,7 @@ ...@@ -41,6 +41,7 @@
#include <asm/page.h> #include <asm/page.h>
#include <asm/pgtable.h> #include <asm/pgtable.h>
#include <mach/time.h> #include <mach/time.h>
#include "gpio-iop32x.h"
/* /*
* N2100 timer tick configuration. * N2100 timer tick configuration.
...@@ -345,6 +346,7 @@ device_initcall(n2100_request_gpios); ...@@ -345,6 +346,7 @@ device_initcall(n2100_request_gpios);
static void __init n2100_init_machine(void) static void __init n2100_init_machine(void)
{ {
register_iop32x_gpio();
platform_device_register(&iop3xx_i2c0_device); platform_device_register(&iop3xx_i2c0_device);
platform_device_register(&n2100_flash_device); platform_device_register(&n2100_flash_device);
platform_device_register(&n2100_serial_device); platform_device_register(&n2100_serial_device);
......
#ifndef __ASM_ARCH_IOP33X_GPIO_H
#define __ASM_ARCH_IOP33X_GPIO_H
#include <asm/hardware/iop3xx-gpio.h>
#endif
...@@ -18,7 +18,6 @@ ...@@ -18,7 +18,6 @@
* Peripherals that are shared between the iop32x and iop33x but * Peripherals that are shared between the iop32x and iop33x but
* located at different addresses. * located at different addresses.
*/ */
#define IOP3XX_GPIO_REG(reg) (IOP3XX_PERIPHERAL_VIRT_BASE + 0x1780 + (reg))
#define IOP3XX_TIMER_REG(reg) (IOP3XX_PERIPHERAL_VIRT_BASE + 0x07d0 + (reg)) #define IOP3XX_TIMER_REG(reg) (IOP3XX_PERIPHERAL_VIRT_BASE + 0x07d0 + (reg))
#include <asm/hardware/iop3xx.h> #include <asm/hardware/iop3xx.h>
......
...@@ -122,8 +122,15 @@ static struct platform_device iq80331_flash_device = { ...@@ -122,8 +122,15 @@ static struct platform_device iq80331_flash_device = {
.resource = &iq80331_flash_resource, .resource = &iq80331_flash_resource,
}; };
static struct resource iq80331_gpio_res[] = {
DEFINE_RES_MEM((IOP3XX_PERIPHERAL_VIRT_BASE + 0x1780), 0x10),
};
static void __init iq80331_init_machine(void) static void __init iq80331_init_machine(void)
{ {
platform_device_register_simple("gpio-iop", 0,
iq80331_gpio_res,
ARRAY_SIZE(iq80331_gpio_res));
platform_device_register(&iop3xx_i2c0_device); platform_device_register(&iop3xx_i2c0_device);
platform_device_register(&iop3xx_i2c1_device); platform_device_register(&iop3xx_i2c1_device);
platform_device_register(&iop33x_uart0_device); platform_device_register(&iop33x_uart0_device);
......
...@@ -122,8 +122,15 @@ static struct platform_device iq80332_flash_device = { ...@@ -122,8 +122,15 @@ static struct platform_device iq80332_flash_device = {
.resource = &iq80332_flash_resource, .resource = &iq80332_flash_resource,
}; };
static struct resource iq80332_gpio_res[] = {
DEFINE_RES_MEM((IOP3XX_PERIPHERAL_VIRT_BASE + 0x1780), 0x10),
};
static void __init iq80332_init_machine(void) static void __init iq80332_init_machine(void)
{ {
platform_device_register_simple("gpio-iop", 0,
iq80332_gpio_res,
ARRAY_SIZE(iq80332_gpio_res));
platform_device_register(&iop3xx_i2c0_device); platform_device_register(&iop3xx_i2c0_device);
platform_device_register(&iop3xx_i2c1_device); platform_device_register(&iop3xx_i2c1_device);
platform_device_register(&iop33x_uart0_device); platform_device_register(&iop33x_uart0_device);
......
...@@ -16,9 +16,23 @@ ...@@ -16,9 +16,23 @@
#include <linux/errno.h> #include <linux/errno.h>
#include <linux/gpio.h> #include <linux/gpio.h>
#include <linux/export.h> #include <linux/export.h>
#include <linux/platform_device.h>
#define IOP3XX_N_GPIOS 8 #define IOP3XX_N_GPIOS 8
#define GPIO_IN 0
#define GPIO_OUT 1
#define GPIO_LOW 0
#define GPIO_HIGH 1
/* Memory base offset */
static void __iomem *base;
#define IOP3XX_GPIO_REG(reg) (base + (reg))
#define IOP3XX_GPOE (volatile u32 *)IOP3XX_GPIO_REG(0x0000)
#define IOP3XX_GPID (volatile u32 *)IOP3XX_GPIO_REG(0x0004)
#define IOP3XX_GPOD (volatile u32 *)IOP3XX_GPIO_REG(0x0008)
static void gpio_line_config(int line, int direction) static void gpio_line_config(int line, int direction)
{ {
unsigned long flags; unsigned long flags;
...@@ -83,8 +97,26 @@ static struct gpio_chip iop3xx_chip = { ...@@ -83,8 +97,26 @@ static struct gpio_chip iop3xx_chip = {
.ngpio = IOP3XX_N_GPIOS, .ngpio = IOP3XX_N_GPIOS,
}; };
static int __init iop3xx_gpio_setup(void) static int iop3xx_gpio_probe(struct platform_device *pdev)
{ {
struct resource *res;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
base = (void *) res->start;
return gpiochip_add(&iop3xx_chip); return gpiochip_add(&iop3xx_chip);
} }
arch_initcall(iop3xx_gpio_setup);
static struct platform_driver iop3xx_gpio_driver = {
.driver = {
.name = "gpio-iop",
.owner = THIS_MODULE,
},
.probe = iop3xx_gpio_probe,
};
static int __init iop3xx_gpio_init(void)
{
return platform_driver_register(&iop3xx_gpio_driver);
}
arch_initcall(iop3xx_gpio_init);
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