diff options
Diffstat (limited to 'target/linux/atheros/files-2.6.26/arch/mips/atheros/reset.c')
| -rw-r--r-- | target/linux/atheros/files-2.6.26/arch/mips/atheros/reset.c | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/target/linux/atheros/files-2.6.26/arch/mips/atheros/reset.c b/target/linux/atheros/files-2.6.26/arch/mips/atheros/reset.c deleted file mode 100644 index eb525da20..000000000 --- a/target/linux/atheros/files-2.6.26/arch/mips/atheros/reset.c +++ /dev/null @@ -1,162 +0,0 @@ -#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 <net/sock.h> -#include <asm/uaccess.h> -#include <ar531x.h> - -#define AR531X_RESET_GPIO_IRQ (AR531X_GPIO_IRQ(bcfg->resetConfigGpio)) - -struct event_t { - struct work_struct wq; - int set; - unsigned long jiffies; -}; - -static struct ar531x_boarddata *bcfg; -static struct timer_list rst_button_timer; - -extern struct sock *uevent_sock; -extern u64 uevent_next_seqnum(void); -static unsigned long seen; - -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 int no_release_workaround = 1; - -static void -reset_button_poll(unsigned long unused) -{ - struct event_t *event; - int gpio = ~0; - - if(!no_release_workaround) - return; - - DO_AR5315(gpio = sysRegRead(AR5315_GPIO_DI);) - gpio &= 1 << (AR531X_RESET_GPIO_IRQ - AR531X_GPIO_IRQ_BASE); - if(gpio) - { - rst_button_timer.expires = jiffies + (HZ / 4); - add_timer(&rst_button_timer); - } else { - event = (struct event_t *) kzalloc(sizeof(struct event_t), GFP_ATOMIC); - if (!event) - { - printk("Could not alloc hotplug event\n"); - return; - } - event->set = 0; - event->jiffies = jiffies; - INIT_WORK(&event->wq, (void *)(void *)hotplug_button); - schedule_work(&event->wq); - } -} - -static irqreturn_t button_handler(int irq, void *dev_id) -{ - static int pressed = 0; - struct event_t *event; - u32 gpio = ~0; - - event = (struct event_t *) kzalloc(sizeof(struct event_t), GFP_ATOMIC); - if (!event) - return IRQ_NONE; - - pressed = !pressed; - - DO_AR5315(gpio = sysRegRead(AR5315_GPIO_DI);) - gpio &= 1 << (irq - AR531X_GPIO_IRQ_BASE); - - event->set = gpio; - if(!event->set) - no_release_workaround = 0; - - event->jiffies = jiffies; - - INIT_WORK(&event->wq, (void *)(void *)hotplug_button); - schedule_work(&event->wq); - - seen = jiffies; - if(event->set && no_release_workaround) - mod_timer(&rst_button_timer, jiffies + (HZ / 4)); - - return IRQ_HANDLED; -} - -void ar531x_disable_reset_button(void) -{ - disable_irq(AR531X_RESET_GPIO_IRQ); -} - -EXPORT_SYMBOL(ar531x_disable_reset_button); - -int __init ar531x_init_reset(void) -{ - bcfg = (struct ar531x_boarddata *) board_config; - - seen = jiffies; - - init_timer(&rst_button_timer); - rst_button_timer.function = reset_button_poll; - rst_button_timer.expires = jiffies + HZ / 50; - add_timer(&rst_button_timer); - - request_irq(AR531X_RESET_GPIO_IRQ, &button_handler, IRQF_SAMPLE_RANDOM, "ar531x_reset", NULL); - - return 0; -} - - - -module_init(ar531x_init_reset); |