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-rw-r--r--target/linux/ifxmips/files/arch/mips/ifxmips/Kconfig4
-rw-r--r--target/linux/ifxmips/files/arch/mips/ifxmips/Makefile2
-rw-r--r--target/linux/ifxmips/files/arch/mips/ifxmips/gpio.c407
-rw-r--r--target/linux/ifxmips/files/arch/mips/ifxmips/reset.c26
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 aadbd5cf9..f01fcd362 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 d9c8e6ad7..b221c37d6 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 000000000..8beb0b820
--- /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 4953c60c8..1b2aef327 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;