move files, rename defines for ifxmips

SVN-Revision: 11565

4 files changed, 421 insertions, 18 deletions

diff --git a/target/linux/ifxmips/files/arch/mips/ifxmips/Kconfig b/target/linux/ifxmips/files/arch/mips/ifxmips/Kconfig
index aadbd5c..f01fcd3 100644
--- a/target/linux/ifxmips/files/arch/mips/ifxmips/Kconfig
+++ b/target/linux/ifxmips/files/arch/mips/ifxmips/Kconfig
@@ -20,10 +20,6 @@ config IFXMIPS_LED
 	bool "IFXMips led"
 	default y
 
-config IFXMIPS_GPIO
-	bool "IFXMips gpio"
-	default y
-
 config IFXMIPS_SSC
 	bool "IFXMips ssc"
 	default y
diff --git a/target/linux/ifxmips/files/arch/mips/ifxmips/Makefile b/target/linux/ifxmips/files/arch/mips/ifxmips/Makefile
index d9c8e6a..b221c37 100644
--- a/target/linux/ifxmips/files/arch/mips/ifxmips/Makefile
+++ b/target/linux/ifxmips/files/arch/mips/ifxmips/Makefile
@@ -1 +1 @@
-obj-y := reset.o prom.o setup.o interrupt.o dma-core.o pmu.o board.o cgu.o gptu.o
+obj-y := reset.o prom.o setup.o interrupt.o dma-core.o pmu.o board.o cgu.o gptu.o gpio.o
diff --git a/target/linux/ifxmips/files/arch/mips/ifxmips/gpio.c b/target/linux/ifxmips/files/arch/mips/ifxmips/gpio.c
new file mode 100644
index 0000000..8beb0b8
--- /dev/null
+++ b/target/linux/ifxmips/files/arch/mips/ifxmips/gpio.c
@@ -0,0 +1,407 @@
+/*
+ *   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.
+ *
+ *   Copyright (C) 2005 infineon
+ *   Copyright (C) 2007 John Crispin <blogic@openwrt.org> 
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/proc_fs.h>
+#include <linux/init.h>
+#include <linux/ioctl.h>
+#include <linux/timer.h>
+#include <linux/module.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/kobject.h>
+#include <linux/workqueue.h>
+#include <linux/skbuff.h>
+#include <linux/netlink.h>
+#include <linux/platform_device.h>
+#include <net/sock.h>
+#include <asm/uaccess.h>
+#include <asm/semaphore.h>
+#include <asm/uaccess.h>
+#include <asm/ifxmips/ifxmips.h>
+#include <asm/ifxmips/ifxmips_ioctl.h>
+
+#define MAX_PORTS			2
+#define PINS_PER_PORT		16
+
+#define DRVNAME				"ifxmips_gpio"
+
+static unsigned int ifxmips_gpio_major = 0;
+
+#ifdef CONFIG_IFXMIPS_GPIO_RST_BTN
+#define IFXMIPS_RST_PIN 15
+#define IFXMIPS_RST_PORT 1
+
+static struct timer_list rst_button_timer;
+
+extern struct sock *uevent_sock;
+extern u64 uevent_next_seqnum(void);
+static unsigned long seen;
+static int pressed = 0;
+
+struct event_t {
+	struct work_struct wq;
+	int set;
+	unsigned long jiffies;
+};
+#endif
+
+/* TODO do we need this ? */
+static struct semaphore port_sem;
+
+/* TODO do we really need this ? return in a define is forbidden by coding style */
+#define IFXMIPS_GPIO_SANITY		{if (port > MAX_PORTS || pin > PINS_PER_PORT) return -EINVAL; }
+
+int
+ifxmips_port_reserve_pin (unsigned int port, unsigned int pin)
+{
+	IFXMIPS_GPIO_SANITY;
+	printk("%s : call to obseleted function\n", __func__);
+
+	return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_reserve_pin);
+
+int
+ifxmips_port_free_pin (unsigned int port, unsigned int pin)
+{
+	IFXMIPS_GPIO_SANITY;
+	printk("%s : call to obseleted function\n", __func__);
+
+	return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_free_pin);
+
+int
+ifxmips_port_set_open_drain (unsigned int port, unsigned int pin)
+{
+	IFXMIPS_GPIO_SANITY;
+	ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_OD + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_OD + (port * 0xC));
+
+	return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_set_open_drain);
+
+int
+ifxmips_port_clear_open_drain (unsigned int port, unsigned int pin)
+{
+	IFXMIPS_GPIO_SANITY;
+	ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_OD + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_OD + (port * 0xC));
+
+	return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_clear_open_drain);
+
+int
+ifxmips_port_set_pudsel (unsigned int port, unsigned int pin)
+{
+    IFXMIPS_GPIO_SANITY;
+	ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC));
+
+	return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_set_pudsel);
+
+int
+ifxmips_port_clear_pudsel (unsigned int port, unsigned int pin)
+{
+    IFXMIPS_GPIO_SANITY;
+	ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC));
+
+	return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_clear_pudsel);
+
+int
+ifxmips_port_set_puden (unsigned int port, unsigned int pin)
+{
+    IFXMIPS_GPIO_SANITY;
+	ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_PUDEN + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_PUDEN + (port * 0xC));
+
+	return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_set_puden);
+
+int
+ifxmips_port_clear_puden (unsigned int port, unsigned int pin)
+{
+    IFXMIPS_GPIO_SANITY;
+	ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_PUDEN + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_PUDEN + (port * 0xC));
+
+	return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_clear_puden);
+
+int
+ifxmips_port_set_stoff (unsigned int port, unsigned int pin)
+{
+    IFXMIPS_GPIO_SANITY;
+	ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_STOFF + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_STOFF + (port * 0xC));
+
+	return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_set_stoff);
+
+int
+ifxmips_port_clear_stoff (unsigned int port, unsigned int pin)
+{
+    IFXMIPS_GPIO_SANITY;
+	ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_STOFF + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_STOFF + (port * 0xC));
+
+	return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_clear_stoff);
+
+int
+ifxmips_port_set_dir_out (unsigned int port, unsigned int pin)
+{
+    IFXMIPS_GPIO_SANITY;
+	ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_DIR + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_DIR + (port * 0xC));
+
+	return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_set_dir_out);
+
+int
+ifxmips_port_set_dir_in (unsigned int port, unsigned int pin)
+{
+    IFXMIPS_GPIO_SANITY;
+	ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_DIR + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_DIR + (port * 0xC));
+
+	return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_set_dir_in);
+
+int
+ifxmips_port_set_output (unsigned int port, unsigned int pin)
+{
+    IFXMIPS_GPIO_SANITY;
+	ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_OUT + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_OUT + (port * 0xC));
+
+	return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_set_output);
+
+int
+ifxmips_port_clear_output (unsigned int port, unsigned int pin)
+{
+    IFXMIPS_GPIO_SANITY;
+	ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_OUT + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_OUT + (port * 0xC));
+
+	return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_clear_output);
+
+int
+ifxmips_port_get_input (unsigned int port, unsigned int pin)
+{
+    IFXMIPS_GPIO_SANITY;
+
+	if (ifxmips_r32(IFXMIPS_GPIO_P0_IN + (port * 0xC)) & (1 << pin))
+		return 0;
+	else
+		return 1;
+}
+EXPORT_SYMBOL(ifxmips_port_get_input);
+
+int
+ifxmips_port_set_altsel0 (unsigned int port, unsigned int pin)
+{
+    IFXMIPS_GPIO_SANITY;
+	ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC));
+
+	return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_set_altsel0);
+
+int
+ifxmips_port_clear_altsel0 (unsigned int port, unsigned int pin)
+{
+    IFXMIPS_GPIO_SANITY;
+	ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC));
+
+	return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_clear_altsel0);
+
+int
+ifxmips_port_set_altsel1 (unsigned int port, unsigned int pin)
+{
+    IFXMIPS_GPIO_SANITY;
+	ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0xC));
+
+	return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_set_altsel1);
+
+int
+ifxmips_port_clear_altsel1 (unsigned int port, unsigned int pin)
+{
+    IFXMIPS_GPIO_SANITY;
+	ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0xC));
+
+	return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_clear_altsel1);
+
+#ifdef CONFIG_IFXMIPS_GPIO_RST_BTN
+static inline void add_msg(struct sk_buff *skb, char *msg)
+{
+	char *scratch;
+	scratch = skb_put(skb, strlen(msg) + 1);
+	sprintf(scratch, msg);
+}
+
+static void hotplug_button(struct work_struct *wq)
+{
+	struct sk_buff *skb;
+	struct event_t *event;
+	size_t len;
+	char *scratch, *s;
+	char buf[128];
+
+	event = container_of(wq, struct event_t, wq);
+	if (!uevent_sock)
+		goto done;
+
+	/* allocate message with the maximum possible size */
+	s = event->set ? "pressed" : "released";
+	len = strlen(s) + 2;
+	skb = alloc_skb(len + 2048, GFP_KERNEL);
+	if (!skb)
+		goto done;
+
+	/* add header */
+	scratch = skb_put(skb, len);
+	sprintf(scratch, "%s@",s);
+
+	/* copy keys to our continuous event payload buffer */
+	add_msg(skb, "HOME=/");
+	add_msg(skb, "PATH=/sbin:/bin:/usr/sbin:/usr/bin");
+	add_msg(skb, "SUBSYSTEM=button");
+	add_msg(skb, "BUTTON=reset");
+	add_msg(skb, (event->set ? "ACTION=pressed" : "ACTION=released"));
+	sprintf(buf, "SEEN=%ld", (event->jiffies - seen)/HZ);
+	add_msg(skb, buf);
+	snprintf(buf, 128, "SEQNUM=%llu", uevent_next_seqnum());
+	add_msg(skb, buf);
+
+	NETLINK_CB(skb).dst_group = 1;
+	netlink_broadcast(uevent_sock, skb, 0, 1, GFP_KERNEL);
+
+done:
+	kfree(event);
+}
+
+static void reset_button_poll(unsigned long unused)
+{
+	struct event_t *event;
+
+	rst_button_timer.expires = jiffies + HZ;
+	add_timer(&rst_button_timer);
+
+	if (pressed != ifxmips_port_get_input(IFXMIPS_RST_PORT, IFXMIPS_RST_PIN))
+	{
+		if(pressed)
+			pressed = 0;
+		else
+			pressed = 1;
+		printk("button was %s\n", (pressed ? "pressed" : "released"));
+		event = (struct event_t *) kzalloc(sizeof(struct event_t), GFP_ATOMIC);
+		if (!event)
+		{
+			printk("Could not alloc hotplug event\n");
+			return;
+		}
+		event->set = pressed;
+		event->jiffies = jiffies;
+		INIT_WORK(&event->wq, (void *)(void *)hotplug_button);
+		schedule_work(&event->wq);
+		seen = jiffies;
+	}
+}
+#endif
+
+static int
+ifxmips_gpio_probe (struct platform_device *dev)
+{
+	int retval = 0;
+
+	sema_init (&port_sem, 1);
+
+#ifdef CONFIG_IFXMIPS_GPIO_RST_BTN
+	ifxmips_port_set_open_drain(IFXMIPS_RST_PORT, IFXMIPS_RST_PIN);
+	ifxmips_port_clear_altsel0(IFXMIPS_RST_PORT, IFXMIPS_RST_PIN);
+	ifxmips_port_clear_altsel1(IFXMIPS_RST_PORT, IFXMIPS_RST_PIN);
+	ifxmips_port_set_dir_in(IFXMIPS_RST_PORT, IFXMIPS_RST_PIN);
+
+	seen = jiffies;
+
+	init_timer(&rst_button_timer);
+	rst_button_timer.function = reset_button_poll;
+	rst_button_timer.expires = jiffies + HZ;
+	add_timer(&rst_button_timer);
+#endif
+
+	printk(KERN_INFO DRVNAME ": device successfully initialized #%d.\n", ifxmips_gpio_major);
+
+	return retval;
+}
+
+static int
+ifxmips_gpio_remove (struct platform_device *pdev)
+{
+#ifdef CONFIG_IFXMIPS_GPIO_RST_BTN
+	del_timer_sync(&rst_button_timer);
+#endif
+	unregister_chrdev(ifxmips_gpio_major, DRVNAME);
+
+	return 0;
+}
+
+static struct
+platform_driver ifxmips_gpio_driver = {
+	.probe = ifxmips_gpio_probe,
+	.remove = ifxmips_gpio_remove,
+	.driver = {
+		.name = DRVNAME,
+		.owner = THIS_MODULE,
+	},
+};
+
+int __init
+ifxmips_gpio_init (void)
+{
+	int ret = platform_driver_register(&ifxmips_gpio_driver);
+	if (ret)
+		printk(KERN_INFO DRVNAME ": Error registering platfom driver!");
+	return ret;
+}
+
+void __exit
+ifxmips_gpio_exit (void)
+{
+	platform_driver_unregister(&ifxmips_gpio_driver);
+}
+
+module_init(ifxmips_gpio_init);
+module_exit(ifxmips_gpio_exit);
diff --git a/target/linux/ifxmips/files/arch/mips/ifxmips/reset.c b/target/linux/ifxmips/files/arch/mips/ifxmips/reset.c
index 4953c60..1b2aef3 100644
--- a/target/linux/ifxmips/files/arch/mips/ifxmips/reset.c
+++ b/target/linux/ifxmips/files/arch/mips/ifxmips/reset.c
@@ -32,33 +32,33 @@
 #include <asm/ifxmips/ifxmips.h>
 
 static void
-ifxmips_machine_restart (char *command)
+ifxmips_machine_restart(char *command)
 {
-	printk (KERN_NOTICE "System restart\n");
-	local_irq_disable ();
+	printk(KERN_NOTICE "System restart\n");
+	local_irq_disable();
 
-	ifxmips_w32(ifxmips_r32(IFXMIPS_RCU_REQ) | IFXMIPS_RST_ALL, IFXMIPS_RCU_REQ);
-	for (;;);
+	ifxmips_w32(ifxmips_r32(IFXMIPS_RCU_RST) | IFXMIPS_RCU_RST_ALL, IFXMIPS_RCU_RST);
+	for(;;);
 }
 
 static void
-ifxmips_machine_halt (void)
+ifxmips_machine_halt(void)
 {
-	printk (KERN_NOTICE "System halted.\n");
-	local_irq_disable ();
-	for (;;);
+	printk(KERN_NOTICE "System halted.\n");
+	local_irq_disable();
+	for(;;);
 }
 
 static void
-ifxmips_machine_power_off (void)
+ifxmips_machine_power_off(void)
 {
 	printk (KERN_NOTICE "Please turn off the power now.\n");
-	local_irq_disable ();
-	for (;;);
+	local_irq_disable();
+	for(;;);
 }
 
 void
-ifxmips_reboot_setup (void)
+ifxmips_reboot_setup(void)
 {
 	_machine_restart = ifxmips_machine_restart;
 	_machine_halt = ifxmips_machine_halt;