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: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

8 files changed, 20 insertions, 7 deletions

diff --git a/arch/arm/mach-iop32x/em7210.c b/arch/arm/mach-iop32x/em7210.c
index 31fbb6c61b25..177cd073a83b 100644
--- a/arch/arm/mach-iop32x/em7210.c
+++ b/arch/arm/mach-iop32x/em7210.c
@@ -32,6 +32,7 @@
 #include <asm/mach/time.h>
 #include <asm/mach-types.h>
 #include <mach/time.h>
+#include "gpio-iop32x.h"
 
 static void __init em7210_timer_init(void)
 {
@@ -183,6 +184,7 @@ void em7210_power_off(void)
 
 static void __init em7210_init_machine(void)
 {
+	register_iop32x_gpio();
 	platform_device_register(&em7210_serial_device);
 	platform_device_register(&iop3xx_i2c0_device);
 	platform_device_register(&iop3xx_i2c1_device);
diff --git a/arch/arm/mach-iop32x/glantank.c b/arch/arm/mach-iop32x/glantank.c
index ac304705fe68..547b2342d61a 100644
--- a/arch/arm/mach-iop32x/glantank.c
+++ b/arch/arm/mach-iop32x/glantank.c
@@ -34,6 +34,7 @@
 #include <asm/mach-types.h>
 #include <asm/page.h>
 #include <mach/time.h>
+#include "gpio-iop32x.h"
 
 /*
  * GLAN Tank timer tick configuration.
@@ -187,6 +188,7 @@ static void glantank_power_off(void)
 
 static void __init glantank_init_machine(void)
 {
+	register_iop32x_gpio();
 	platform_device_register(&iop3xx_i2c0_device);
 	platform_device_register(&iop3xx_i2c1_device);
 	platform_device_register(&glantank_flash_device);
diff --git a/arch/arm/mach-iop32x/gpio-iop32x.h b/arch/arm/mach-iop32x/gpio-iop32x.h
new file mode 100644
index 000000000000..b8710a63a13e
--- /dev/null
+++ b/arch/arm/mach-iop32x/gpio-iop32x.h
@@ -0,0 +1,10 @@
+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));
+}
diff --git a/arch/arm/mach-iop32x/include/mach/gpio.h b/arch/arm/mach-iop32x/include/mach/gpio.h
deleted file mode 100644
index 708f4ec9db1d..000000000000
--- a/arch/arm/mach-iop32x/include/mach/gpio.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#ifndef __ASM_ARCH_IOP32X_GPIO_H
-#define __ASM_ARCH_IOP32X_GPIO_H
-
-#include <asm/hardware/iop3xx-gpio.h>
-
-#endif
diff --git a/arch/arm/mach-iop32x/include/mach/iop32x.h b/arch/arm/mach-iop32x/include/mach/iop32x.h
index 941f363aca56..56ec864ec313 100644
--- a/arch/arm/mach-iop32x/include/mach/iop32x.h
+++ b/arch/arm/mach-iop32x/include/mach/iop32x.h
@@ -19,7 +19,6 @@
  * Peripherals that are shared between the iop32x and iop33x but
  * 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))
 
 #include <asm/hardware/iop3xx.h>
diff --git a/arch/arm/mach-iop32x/iq31244.c b/arch/arm/mach-iop32x/iq31244.c
index f2cd2966212d..0e1392b20d18 100644
--- a/arch/arm/mach-iop32x/iq31244.c
+++ b/arch/arm/mach-iop32x/iq31244.c
@@ -37,6 +37,7 @@
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <mach/time.h>
+#include "gpio-iop32x.h"
 
 /*
  * Until March of 2007 iq31244 platforms and ep80219 platforms shared the
@@ -283,6 +284,7 @@ void ep80219_power_off(void)
 
 static void __init iq31244_init_machine(void)
 {
+	register_iop32x_gpio();
 	platform_device_register(&iop3xx_i2c0_device);
 	platform_device_register(&iop3xx_i2c1_device);
 	platform_device_register(&iq31244_flash_device);
diff --git a/arch/arm/mach-iop32x/iq80321.c b/arch/arm/mach-iop32x/iq80321.c
index 015435de90dd..66782ff1f46a 100644
--- a/arch/arm/mach-iop32x/iq80321.c
+++ b/arch/arm/mach-iop32x/iq80321.c
@@ -33,6 +33,7 @@
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <mach/time.h>
+#include "gpio-iop32x.h"
 
 /*
  * IQ80321 timer tick configuration.
@@ -170,6 +171,7 @@ static struct platform_device iq80321_serial_device = {
 
 static void __init iq80321_init_machine(void)
 {
+	register_iop32x_gpio();
 	platform_device_register(&iop3xx_i2c0_device);
 	platform_device_register(&iop3xx_i2c1_device);
 	platform_device_register(&iq80321_flash_device);
diff --git a/arch/arm/mach-iop32x/n2100.c b/arch/arm/mach-iop32x/n2100.c
index bc40a97050a1..c1cd80ecc219 100644
--- a/arch/arm/mach-iop32x/n2100.c
+++ b/arch/arm/mach-iop32x/n2100.c
@@ -41,6 +41,7 @@
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <mach/time.h>
+#include "gpio-iop32x.h"
 
 /*
  * N2100 timer tick configuration.
@@ -345,6 +346,7 @@ device_initcall(n2100_request_gpios);
 
 static void __init n2100_init_machine(void)
 {
+	register_iop32x_gpio();
 	platform_device_register(&iop3xx_i2c0_device);
 	platform_device_register(&n2100_flash_device);
 	platform_device_register(&n2100_serial_device);