mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-24 00:30:16 +02:00
add gpio fixes and reset button supportÂ
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@9904 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
blogic
parent
0dd225201a
commit
5b9a56d1a4
@ -24,6 +24,16 @@
|
||||
#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 <net/sock.h>
|
||||
#include <asm/uaccess.h>
|
||||
#include <asm/semaphore.h>
|
||||
#include <asm/uaccess.h>
|
||||
#include <asm/ifxmips/ifxmips.h>
|
||||
@ -34,6 +44,24 @@
|
||||
|
||||
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;
|
||||
|
||||
@ -64,7 +92,7 @@ int
|
||||
ifxmips_port_set_open_drain (unsigned int port, unsigned int pin)
|
||||
{
|
||||
IFXMIPS_GPIO_SANITY;
|
||||
writel(readl(IFXMIPS_GPIO_P0_OD + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_OD);
|
||||
writel(readl(IFXMIPS_GPIO_P0_OD + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_OD + (port * 0xC));
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -74,7 +102,7 @@ int
|
||||
ifxmips_port_clear_open_drain (unsigned int port, unsigned int pin)
|
||||
{
|
||||
IFXMIPS_GPIO_SANITY;
|
||||
writel(readl(IFXMIPS_GPIO_P0_OD + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_OD);
|
||||
writel(readl(IFXMIPS_GPIO_P0_OD + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_OD + (port * 0xC));
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -84,7 +112,7 @@ int
|
||||
ifxmips_port_set_pudsel (unsigned int port, unsigned int pin)
|
||||
{
|
||||
IFXMIPS_GPIO_SANITY;
|
||||
writel(readl(IFXMIPS_GPIO_P0_PUDSEL + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_PUDSEL);
|
||||
writel(readl(IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC));
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -94,7 +122,7 @@ int
|
||||
ifxmips_port_clear_pudsel (unsigned int port, unsigned int pin)
|
||||
{
|
||||
IFXMIPS_GPIO_SANITY;
|
||||
writel(readl(IFXMIPS_GPIO_P0_PUDSEL + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_PUDSEL);
|
||||
writel(readl(IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC));
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -104,7 +132,7 @@ int
|
||||
ifxmips_port_set_puden (unsigned int port, unsigned int pin)
|
||||
{
|
||||
IFXMIPS_GPIO_SANITY;
|
||||
writel(readl(IFXMIPS_GPIO_P0_PUDEN + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_PUDEN);
|
||||
writel(readl(IFXMIPS_GPIO_P0_PUDEN + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_PUDEN + (port * 0xC));
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -114,7 +142,7 @@ int
|
||||
ifxmips_port_clear_puden (unsigned int port, unsigned int pin)
|
||||
{
|
||||
IFXMIPS_GPIO_SANITY;
|
||||
writel(readl(IFXMIPS_GPIO_P0_PUDEN + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_PUDEN);
|
||||
writel(readl(IFXMIPS_GPIO_P0_PUDEN + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_PUDEN + (port * 0xC));
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -124,7 +152,7 @@ int
|
||||
ifxmips_port_set_stoff (unsigned int port, unsigned int pin)
|
||||
{
|
||||
IFXMIPS_GPIO_SANITY;
|
||||
writel(readl(IFXMIPS_GPIO_P0_STOFF + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_STOFF);
|
||||
writel(readl(IFXMIPS_GPIO_P0_STOFF + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_STOFF + (port * 0xC));
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -134,7 +162,7 @@ int
|
||||
ifxmips_port_clear_stoff (unsigned int port, unsigned int pin)
|
||||
{
|
||||
IFXMIPS_GPIO_SANITY;
|
||||
writel(readl(IFXMIPS_GPIO_P0_STOFF + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_STOFF);
|
||||
writel(readl(IFXMIPS_GPIO_P0_STOFF + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_STOFF + (port * 0xC));
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -144,7 +172,7 @@ int
|
||||
ifxmips_port_set_dir_out (unsigned int port, unsigned int pin)
|
||||
{
|
||||
IFXMIPS_GPIO_SANITY;
|
||||
writel(readl(IFXMIPS_GPIO_P0_DIR + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_DIR);
|
||||
writel(readl(IFXMIPS_GPIO_P0_DIR + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_DIR + (port * 0xC));
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -154,7 +182,7 @@ int
|
||||
ifxmips_port_set_dir_in (unsigned int port, unsigned int pin)
|
||||
{
|
||||
IFXMIPS_GPIO_SANITY;
|
||||
writel(readl(IFXMIPS_GPIO_P0_DIR + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_DIR);
|
||||
writel(readl(IFXMIPS_GPIO_P0_DIR + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_DIR + (port * 0xC));
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -164,7 +192,7 @@ int
|
||||
ifxmips_port_set_output (unsigned int port, unsigned int pin)
|
||||
{
|
||||
IFXMIPS_GPIO_SANITY;
|
||||
writel(readl(IFXMIPS_GPIO_P0_OUT + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_OUT);
|
||||
writel(readl(IFXMIPS_GPIO_P0_OUT + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_OUT + (port * 0xC));
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -174,7 +202,7 @@ int
|
||||
ifxmips_port_clear_output (unsigned int port, unsigned int pin)
|
||||
{
|
||||
IFXMIPS_GPIO_SANITY;
|
||||
writel(readl(IFXMIPS_GPIO_P0_OUT + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_OUT);
|
||||
writel(readl(IFXMIPS_GPIO_P0_OUT + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_OUT + (port * 0xC));
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -185,7 +213,7 @@ ifxmips_port_get_input (unsigned int port, unsigned int pin)
|
||||
{
|
||||
IFXMIPS_GPIO_SANITY;
|
||||
|
||||
if (readl(IFXMIPS_GPIO_P0_IN + (port * 0x30)) & (1 << pin))
|
||||
if (readl(IFXMIPS_GPIO_P0_IN + (port * 0xC)) & (1 << pin))
|
||||
return 0;
|
||||
else
|
||||
return 1;
|
||||
@ -196,7 +224,7 @@ int
|
||||
ifxmips_port_set_altsel0 (unsigned int port, unsigned int pin)
|
||||
{
|
||||
IFXMIPS_GPIO_SANITY;
|
||||
writel(readl(IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_ALTSEL0);
|
||||
writel(readl(IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC));
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -206,7 +234,7 @@ int
|
||||
ifxmips_port_clear_altsel0 (unsigned int port, unsigned int pin)
|
||||
{
|
||||
IFXMIPS_GPIO_SANITY;
|
||||
writel(readl(IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_ALTSEL0);
|
||||
writel(readl(IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC)) & ~(1 << pin), IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC));
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -216,7 +244,7 @@ int
|
||||
ifxmips_port_set_altsel1 (unsigned int port, unsigned int pin)
|
||||
{
|
||||
IFXMIPS_GPIO_SANITY;
|
||||
writel(readl(IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_ALTSEL1);
|
||||
writel(readl(IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0xC)) | (1 << pin), IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0xC));
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -226,12 +254,90 @@ int
|
||||
ifxmips_port_clear_altsel1 (unsigned int port, unsigned int pin)
|
||||
{
|
||||
IFXMIPS_GPIO_SANITY;
|
||||
writel(readl(IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_ALTSEL1);
|
||||
writel(readl(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
|
||||
|
||||
long ifxmips_port_read_procmem_helper(char* tag, u32* in_reg, char *buf)
|
||||
{
|
||||
u32 reg, bit = 0;
|
||||
@ -425,6 +531,20 @@ ifxmips_gpio_init (void)
|
||||
create_proc_read_entry("ifxmips_gpio", 0, NULL,
|
||||
ifxmips_port_read_procmem, NULL);
|
||||
|
||||
#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("registered ifxmips gpio driver\n");
|
||||
|
||||
out:
|
||||
@ -434,6 +554,9 @@ out:
|
||||
void __exit
|
||||
ifxmips_gpio_exit (void)
|
||||
{
|
||||
#ifdef CONFIG_IFXMIPS_GPIO_RST_BTN
|
||||
del_timer_sync(&rst_button_timer);
|
||||
#endif
|
||||
unregister_chrdev(ifxmips_gpio_major, "ifxmips_gpio");
|
||||
remove_proc_entry("ifxmips_gpio", NULL);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user