cns21xx: add initial support for the Cavium CNS21xx SoC

[openwrt.git] / target / linux / cns21xx / patches-2.6.36 / 102-cns21xx-gpiolib-support.patch

diff --git a/target/linux/cns21xx/patches-2.6.36/102-cns21xx-gpiolib-support.patch b/target/linux/cns21xx/patches-2.6.36/102-cns21xx-gpiolib-support.patch
new file mode 100644 (file)
index 0000000..d54a713
--- /dev/null
+++ b/target/linux/cns21xx/patches-2.6.36/102-cns21xx-gpiolib-support.patch
@@ -0,0 +1,113 @@
+--- a/arch/arm/Kconfig
++++ b/arch/arm/Kconfig
+@@ -296,6 +296,8 @@ config ARCH_CNS21XX
+       select CPU_FA526
+       select PLAT_FA
+       select PLAT_FA_TIME
++      select PLAT_FA_GPIO
++      select ARCH_REQUIRE_GPIOLIB
+       select ARM_L1_CACHE_SHIFT_4
+       help
+         Support for Cavium Networks CNS21xx family.
+--- a/arch/arm/mach-cns21xx/common.h
++++ b/arch/arm/mach-cns21xx/common.h
+@@ -12,6 +12,7 @@
+ 
+ void __init cns21xx_map_io(void);
+ void __init cns21xx_init_irq(void);
++void __init cns21xx_gpio_init(void);
+ 
+ extern struct sys_timer cns21xx_timer;
+ 
+--- /dev/null
++++ b/arch/arm/mach-cns21xx/gpio.c
+@@ -0,0 +1,45 @@
++/*
++ *  Copyright (c) 2010 Gabor Juhos <juhosg@openwrt.org>
++ *
++ *  This file is free software; you can redistribute it and/or modify
++ *  it under the terms of the GNU General Public License, Version 2, as
++ *  published by the Free Software Foundation.
++ */
++
++#include <plat/gpio.h>
++
++#include <mach/cns21xx.h>
++#include <mach/irqs.h>
++
++static struct fa_gpio_chip cns21xx_gpio_chips[] = {
++      {
++              .gpio_chip = {
++                      .label  = "GPIOA",
++                      .base   = 0,
++                      .ngpio  = 32,
++              },
++
++              .map_base       = CNS21XX_GPIOA_BASE,
++              .irq_base       = CNS21XX_GPIO_IRQ_BASE,
++      }, {
++              .gpio_chip = {
++                      .label  = "GPIOB",
++                      .base   = 32,
++                      .ngpio  = 32,
++              },
++
++              .map_base       = CNS21XX_GPIOB_BASE,
++              .irq_base       = CNS21XX_GPIO_IRQ_BASE + 32,
++      }
++};
++
++static struct fa_gpio_data cns21xx_gpio_data = {
++      .chips  = cns21xx_gpio_chips,
++      .nchips = ARRAY_SIZE(cns21xx_gpio_chips),
++      .irq    = CNS21XX_IRQ_GPIO,
++};
++
++void __init cns21xx_gpio_init(void)
++{
++      fa_gpio_init(&cns21xx_gpio_data);
++}
+--- /dev/null
++++ b/arch/arm/mach-cns21xx/include/mach/gpio.h
+@@ -0,0 +1,30 @@
++/*
++ *  Copyright (c) 2008 Cavium Networks
++ *  Copyright (c) 2010 Gabor Juhos <juhosg@openwrt.org>
++ *
++ *  This file is free software; you can redistribute it and/or modify
++ *  it under the terms of the GNU General Public License, Version 2, as
++ *  published by the Free Software Foundation.
++ */
++
++#ifndef _CNS21XX_GPIO_H
++#define _CNS21XX_GPIO_H
++
++#include <asm-generic/gpio.h>
++#include <mach/irqs.h>
++
++#define gpio_get_value        __gpio_get_value
++#define gpio_set_value        __gpio_set_value
++#define gpio_cansleep __gpio_cansleep
++
++static inline int gpio_to_irq(unsigned gpio)
++{
++      return (CNS21XX_GPIO_IRQ_BASE + gpio);
++}
++
++static inline int irq_to_gpio(int irq)
++{
++      return (irq - CNS21XX_GPIO_IRQ_BASE);
++}
++
++#endif /* _CNS21XX_GPIO_H */
+--- a/arch/arm/mach-cns21xx/Makefile
++++ b/arch/arm/mach-cns21xx/Makefile
+@@ -4,7 +4,7 @@
+ 
+ # Object file lists.
+ 
+-obj-y         := core.o devices.o irq.o mm.o time.o
++obj-y         := core.o devices.o gpio.o irq.o mm.o time.o
+ 
+ # machine specific files
+