Upgrade rb532 to .23, provide generic GPIO API to this board

SVN-Revision: 10171

8 files changed, 232 insertions, 93 deletions

diff --git a/target/linux/rb532/files/arch/mips/pci/fixup-rb500.c b/target/linux/rb532/files/arch/mips/pci/fixup-rb500.c
index ceb53b0aa9..76c465fea4 100644
--- a/target/linux/rb532/files/arch/mips/pci/fixup-rb500.c
+++ b/target/linux/rb532/files/arch/mips/pci/fixup-rb500.c
@@ -24,12 +24,14 @@
  *  675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
-#include <linux/autoconf.h>
 #include <linux/types.h>
 #include <linux/pci.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
 
+#include <asm/pci.h>
+#include <asm/io.h>
+
 #include <asm/rc32434/rc32434.h>
 
 static int __devinitdata irq_map[2][12] = {
@@ -37,7 +39,7 @@ static int __devinitdata irq_map[2][12] = {
 	{ 0, 0, 1, 3, 0, 2, 1, 3, 0, 2, 1, 3 }
 };
 
-int __devinit pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	int irq = 0;
 
diff --git a/target/linux/rb532/files/arch/mips/rb500/Makefile b/target/linux/rb532/files/arch/mips/rb500/Makefile
index 3a6a2855a3..d3ae3d9122 100644
--- a/target/linux/rb532/files/arch/mips/rb500/Makefile
+++ b/target/linux/rb532/files/arch/mips/rb500/Makefile
@@ -2,4 +2,4 @@
 # Makefile for the RB500 board specific parts of the kernel
 #
 
-obj-y	 += irq.o time.o setup.o serial.o prom.o misc.o devices.o
+obj-y	 += irq.o time.o setup.o serial.o prom.o gpio.o devices.o
diff --git a/target/linux/rb532/files/arch/mips/rb500/gpio.c b/target/linux/rb532/files/arch/mips/rb500/gpio.c
new file mode 100644
index 0000000000..9e19a63363
--- /dev/null
+++ b/target/linux/rb532/files/arch/mips/rb500/gpio.c
@@ -0,0 +1,159 @@
+/*
+ *  Miscellaneous functions for IDT EB434 board
+ *
+ *  Copyright 2004 IDT Inc. (rischelp@idt.com)
+ *  Copyright 2006 Phil Sutter <n0-1@freewrt.org>
+ *  Copyright 2007 Florian Fainelli <florian@openwrt.org>
+ *
+ *  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  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
+ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
+ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  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.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/spinlock.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+
+#include <asm/addrspace.h>
+#include <asm/gpio.h>
+
+#include <asm/rc32434/rb.h>
+
+#define GPIO_BADDR  0xb8050000
+
+static volatile unsigned char *devCtl3Base;
+static unsigned char latchU5State;
+static spinlock_t clu5Lock = SPIN_LOCK_UNLOCKED;
+
+struct rb500_gpio_reg __iomem *rb500_gpio_reg0;
+EXPORT_SYMBOL(rb500_gpio_reg0);
+
+static struct resource rb500_gpio_reg0_res[] = {
+	{
+		.name 	= "gpio_reg0",
+		.start 	= GPIO_BADDR,
+		.end 	= GPIO_BADDR + sizeof(struct rb500_gpio_reg),
+		.flags 	= IORESOURCE_MEM,
+	}
+};
+
+void set434Reg(unsigned regOffs, unsigned bit, unsigned len, unsigned val)
+{
+	unsigned flags, data;
+	unsigned i = 0;
+
+	spin_lock_irqsave(&clu5Lock, flags);
+	data = *(volatile unsigned *) (IDT434_REG_BASE + regOffs);
+	for (i = 0; i != len; ++i) {
+		if (val & (1 << i))
+			data |= (1 << (i + bit));
+		else
+			data &= ~(1 << (i + bit));
+	}
+	*(volatile unsigned *) (IDT434_REG_BASE + regOffs) = data;
+	spin_unlock_irqrestore(&clu5Lock, flags);
+}
+
+EXPORT_SYMBOL(set434Reg);
+
+void changeLatchU5(unsigned char orMask, unsigned char nandMask)
+{
+	unsigned flags;
+
+	spin_lock_irqsave(&clu5Lock, flags);
+	latchU5State = (latchU5State | orMask) & ~nandMask;
+	if (!devCtl3Base)
+		devCtl3Base = (volatile unsigned char *)
+		    KSEG1ADDR(*(volatile unsigned *)
+			      KSEG1ADDR(0x18010030));
+	*devCtl3Base = latchU5State;
+	spin_unlock_irqrestore(&clu5Lock, flags);
+}
+
+EXPORT_SYMBOL(changeLatchU5);
+
+unsigned char getLatchU5State(void)
+{
+	return latchU5State;
+}
+
+EXPORT_SYMBOL(getLatchU5State);
+
+int rb500_gpio_get_value(unsigned gpio)
+{
+	u32 reg;
+
+	reg = readl(&rb500_gpio_reg0->gpiod);
+	return (reg & (1 << gpio));
+}
+
+EXPORT_SYMBOL(rb500_gpio_get_value);
+
+void rb500_gpio_set_value(unsigned gpio, int value)
+{
+	u32 reg;
+
+	reg = (u32)&rb500_gpio_reg0->gpiod;
+
+	writel(value, (void *)(reg & (1 << gpio)));
+}
+
+EXPORT_SYMBOL(rb500_gpio_set_value);
+
+int rb500_gpio_direction_input(unsigned gpio)
+{
+	u32 reg;
+
+	reg = (u32)&rb500_gpio_reg0->gpiocfg;
+	writel(0, (void *)(reg & (1 << gpio)));
+
+	return 0;
+}
+
+EXPORT_SYMBOL(rb500_gpio_direction_input);
+
+int rb500_gpio_direction_output(unsigned gpio, int value)
+{
+	u32 reg;
+
+	reg = (u32)&rb500_gpio_reg0->gpiocfg;
+	if (value)
+		writel(1, (void *)(reg & (1 << gpio)));
+
+	return 0;
+}
+
+EXPORT_SYMBOL(rb500_gpio_direction_output);
+
+int __init rb500_gpio_init(void)
+{
+	rb500_gpio_reg0 = ioremap_nocache(rb500_gpio_reg0_res[0].start,
+				rb500_gpio_reg0_res[0].end - rb500_gpio_reg0_res[0].start);
+
+	if (!rb500_gpio_reg0) {
+		printk(KERN_ERR "rb500: cannot remap GPIO register 0\n");
+		return -ENXIO;
+	}
+
+	return 0;
+}
diff --git a/target/linux/rb532/files/arch/mips/rb500/irq.c b/target/linux/rb532/files/arch/mips/rb500/irq.c
index 47521c7c57..5a4d349d49 100644
--- a/target/linux/rb532/files/arch/mips/rb500/irq.c
+++ b/target/linux/rb532/files/arch/mips/rb500/irq.c
@@ -63,6 +63,7 @@ static void rb500_enable_irq(unsigned int irq_nr);
 static void rb500_disable_irq(unsigned int irq_nr);
 
 extern void __init init_generic_irq(void);
+extern struct rb500_gpio_reg __iomem *rb500_gpio_reg0;
 
 typedef struct {
   u32 mask;       /* mask of valid bits in pending/mask registers */
@@ -205,7 +206,7 @@ static void rb500_end_irq(unsigned int irq_nr)
 		intr_bit = 1 << ip;
 	
 		if (irq_nr >= GROUP4_IRQ_BASE && irq_nr <= (GROUP4_IRQ_BASE + 13)) {
-			gpio->gpioistat = gpio->gpioistat & ~intr_bit;
+			rb500_gpio_reg0->gpioistat = rb500_gpio_reg0->gpioistat & ~intr_bit;
 		}
 	
 		enable_local_irq(group_to_ip(group));
diff --git a/target/linux/rb532/files/arch/mips/rb500/misc.c b/target/linux/rb532/files/arch/mips/rb500/misc.c
deleted file mode 100644
index 42039b7aae..0000000000
--- a/target/linux/rb532/files/arch/mips/rb500/misc.c
+++ /dev/null
@@ -1,56 +0,0 @@
-#include <linux/module.h>
-#include <linux/kernel.h>   /* printk() */
-#include <linux/types.h>    /* size_t */
-#include <linux/pci.h>
-#include <linux/spinlock.h>
-#include <asm/rc32434/rb.h>
-
-#define GPIO_BADDR  0xb8050000
-
-
-static volatile unsigned char *devCtl3Base = 0;
-static unsigned char latchU5State = 0;
-static spinlock_t clu5Lock = SPIN_LOCK_UNLOCKED;
-
-void set434Reg(unsigned regOffs, unsigned bit, unsigned len, unsigned val) {
-    unsigned flags, data;
-    unsigned i = 0;
-    spin_lock_irqsave(&clu5Lock, flags);
-    data = *(volatile unsigned *) (IDT434_REG_BASE + regOffs);
-    for (i = 0; i != len; ++i) {
-	if (val & (1 << i)) data |= (1 << (i + bit));
-	else data &= ~(1 << (i + bit));
-    }
-    *(volatile unsigned *) (IDT434_REG_BASE + regOffs) = data;
-    spin_unlock_irqrestore(&clu5Lock, flags);
-}
-
-void changeLatchU5(unsigned char orMask, unsigned char nandMask) {
-    unsigned flags;
-    spin_lock_irqsave(&clu5Lock, flags);
-    latchU5State = (latchU5State | orMask) & ~nandMask;
-    if( !devCtl3Base) devCtl3Base = (volatile unsigned char *)
-	        KSEG1ADDR(*(volatile unsigned *) KSEG1ADDR(0x18010030));
-    *devCtl3Base = latchU5State;
-    spin_unlock_irqrestore(&clu5Lock, flags);
-}
-
-u32 gpio_get(gpio_func func)
-{
-	return readl((void *) GPIO_BADDR + func);
-}
-
-void gpio_set(gpio_func func, u32 mask, u32 value)
-{
-	u32 val = readl((void *) GPIO_BADDR + func);
-	
-	val &= ~mask;
-	val |= value & mask;
-	
-	writel(val, (void *) GPIO_BADDR + func);
-}
-
-EXPORT_SYMBOL(gpio_set);
-EXPORT_SYMBOL(gpio_get);
-EXPORT_SYMBOL(set434Reg);
-EXPORT_SYMBOL(changeLatchU5);
diff --git a/target/linux/rb532/files/arch/mips/rb500/serial.c b/target/linux/rb532/files/arch/mips/rb500/serial.c
index 49c5252feb..25a03e0108 100644
--- a/target/linux/rb532/files/arch/mips/rb500/serial.c
+++ b/target/linux/rb532/files/arch/mips/rb500/serial.c
@@ -45,6 +45,7 @@
 #include <linux/tty.h>
 #include <linux/serial.h>
 #include <linux/serial_core.h>
+#include <linux/serial_8250.h>
 
 #include <asm/time.h>
 #include <asm/cpu.h>
@@ -59,7 +60,7 @@ static struct uart_port serial_req = {
 	.type = PORT_16550A,
 	.line = 0,
 	.irq = RC32434_UART0_IRQ,
-	.flags = STD_COM_FLAGS,
+	//.flags = STD_COM_FLAGS,
 	.iotype = UPIO_MEM,
 	.membase = (char *) KSEG1ADDR(RC32434_UART0_BASE),
 //	.fifosize = 14
diff --git a/target/linux/rb532/files/include/asm-mips/rc32434/gpio.h b/target/linux/rb532/files/include/asm-mips/rc32434/gpio.h
index 1638cfeacc..393259342d 100644
--- a/target/linux/rb532/files/include/asm-mips/rc32434/gpio.h
+++ b/target/linux/rb532/files/include/asm-mips/rc32434/gpio.h
@@ -1,39 +1,21 @@
-#ifndef __IDT_GPIO_H__
-#define __IDT_GPIO_H__
-
-/*******************************************************************************
- *
+/*
  * Copyright 2002 Integrated Device Technology, Inc.
- *		All rights reserved.
+ *	All rights reserved.
  *
  * GPIO register definition.
  *
- * File   : $Id: gpio.h,v 1.2 2002/06/06 18:34:04 astichte Exp $
- *
  * Author : ryan.holmQVist@idt.com
  * Date   : 20011005
- * Update :
- *	    $Log: gpio.h,v $
- *	    Revision 1.2  2002/06/06 18:34:04  astichte
- *	    Added XXX_PhysicalAddress and XXX_VirtualAddress
- *	
- *	    Revision 1.1  2002/05/29 17:33:22  sysarch
- *	    jba File moved from vcode/include/idt/acacia
- *	
- *
- ******************************************************************************/
+ * Copyright (C) 2001, 2002 Ryan Holm <ryan.holmQVist@idt.com>
+ * Copyright (C) 2008 Florian Fainelli <florian@openwrt.org>
+ */
 
-enum
-{
-	GPIO0_PhysicalAddress	= 0x18050000,
-	GPIO_PhysicalAddress	= GPIO0_PhysicalAddress,	// Default
+#ifndef _RC32434_GPIO_H_
+#define _RC32434_GPIO_H_
 
-	GPIO0_VirtualAddress	= 0xb8050000,
-	GPIO_VirtualAddress	= GPIO0_VirtualAddress,		// Default
-} ;
+#include <linux/types.h>
 
-typedef struct
-{
+struct rb500_gpio_reg {
 	u32   gpiofunc;   /* GPIO Function Register
 			   * gpiofunc[x]==0 bit = gpio
 			   * func[x]==1  bit = altfunc
@@ -53,9 +35,9 @@ typedef struct
 			   * cleared in ISR (STICKY bits)
 			   */
 	u32   gpionmien;  /* GPIO Non-maskable Interrupt Enable Register */
-} volatile * GPIO_t ;
+};
 
-typedef enum
+enum gpio_regs
 {
 	GPIO_gpio_v		= 0,		// gpiofunc use pin as GPIO.
 	GPIO_alt_v		= 1,		// gpiofunc use pin as alt.
@@ -175,7 +157,58 @@ typedef enum
 	GPIO_pcimuintn_m	= GPIO_pin13_m,
 		GPIO_pcimuintn_cfg_v	= GPIO_output_v,
 
-} GPIO_DEFS_t;
+};
+
+extern int rb500_gpio_get_value(unsigned gpio);
+extern void rb500_gpio_set_value(unsigned gpio, int value);
+extern int rb500_gpio_direction_input(unsigned gpio);
+extern int rb500_gpio_direction_output(unsigned gpio, int value);
+
+
+/* Wrappers for the arch-neutral GPIO API */
+
+static inline int gpio_request(unsigned gpio, const char *label)
+{
+	/* Not yet implemented */
+	return 0;
+}
+
+static inline void gpio_free(unsigned gpio)
+{
+	/* Not yet implemented */
+}
+
+static inline int gpio_direction_input(unsigned gpio)
+{
+	return rb500_gpio_direction_input(gpio);
+}
+
+static inline int gpio_direction_output(unsigned gpio, int value)
+{
+	return rb500_gpio_direction_output(gpio, value);
+}
+
+static inline int gpio_get_value(unsigned gpio)
+{
+	return rb500_gpio_get_value(gpio);
+}
+
+static inline void gpio_set_value(unsigned gpio, int value)
+{
+	rb500_gpio_set_value(gpio, value);
+}
+
+static inline int gpio_to_irq(unsigned gpio)
+{
+	return gpio;
+}
+
+static inline int irq_to_gpio(unsigned irq)
+{
+	return irq;
+}
 
-#endif	// __IDT_GPIO_H__
+/* For cansleep */
+#include <asm-generic/gpio.h>
 
+#endif /* _RC32434_GPIO_H_ */
diff --git a/target/linux/rb532/files/include/asm-mips/rc32434/rc32434.h b/target/linux/rb532/files/include/asm-mips/rc32434/rc32434.h
index 848fc86b3a..f3e53e4332 100644
--- a/target/linux/rb532/files/include/asm-mips/rc32434/rc32434.h
+++ b/target/linux/rb532/files/include/asm-mips/rc32434/rc32434.h
@@ -32,7 +32,6 @@
 #define RC32434_REG_BASE   0x18000000
 
 #define interrupt ((volatile INT_t ) INT0_VirtualAddress)
-#define gpio	  ((volatile GPIO_t) GPIO0_VirtualAddress)
 
 
 #define IDT_CLOCK_MULT 2