#define PREFIX "debounce: "
-static int debounce_delay = 10;
+static int debounce_delay = 15;
+
+static unsigned old_flags = 0;
+ktime_t old_debounce_delay;
+ktime_t old_settle_time;
+ktime_t old_poll_time;
+static struct gpio_event_matrix_info *gpio_evmi = NULL;
module_param(debounce_delay, int, S_IRUSR | S_IRGRP | S_IROTH);
-MODULE_PARM_DESC(debounce_delay, "debouncing delay (ms), default: 10");
+MODULE_PARM_DESC(debounce_delay, "debouncing delay (ms), default: 15");
static int find_ms2_dev(struct device *dev, void *data)
{
struct device *event_dev = NULL;
struct gpio_event_platform_data *gpio_epd;
struct gpio_event_info *gpio_ei;
- struct gpio_event_matrix_info *gpio_evmi;
printk(KERN_INFO PREFIX "Searching for " GPIO_EVENT_DEV_NAME "...\n");
printk(KERN_INFO PREFIX "debounce_delay: %u\n", gpio_evmi->debounce_delay.tv.nsec);
printk(KERN_INFO PREFIX "flags: 0x%x\n", gpio_evmi->flags);
- /* GPIOKPF_DEBOUNCE should already be set by GPIOKPF_REMOVE_PHANTOM_KEYS */
- if (!(gpio_evmi->flags & GPIOKPF_DEBOUNCE)) {
- printk(KERN_INFO PREFIX "Activating debounce\n");
- gpio_evmi->flags |= GPIOKPF_DEBOUNCE;
- printk(KERN_INFO PREFIX "flags: 0x%x\n", gpio_evmi->flags);
- }
+ old_debounce_delay = gpio_evmi->debounce_delay;
+ old_settle_time = gpio_evmi->settle_time;
+ old_poll_time = gpio_evmi->poll_time;
+ old_flags = gpio_evmi->flags;
if (gpio_evmi->debounce_delay.tv.nsec != debounce_delay * NSEC_PER_MSEC) {
printk(KERN_INFO PREFIX "Changing debounce_delay\n");
printk(KERN_INFO PREFIX "debounce_delay: %u\n", gpio_evmi->debounce_delay.tv.nsec);
}
+#if 0
+ gpio_evmi->flags &= ~GPIOKPF_REMOVE_SOME_PHANTOM_KEYS;
+#endif
+
+ if (gpio_evmi->debounce_delay.tv.nsec != 0) {
+ /* GPIOKPF_DEBOUNCE should already be set by GPIOKPF_REMOVE_PHANTOM_KEYS */
+ if (!(gpio_evmi->flags & GPIOKPF_DEBOUNCE)) {
+ printk(KERN_INFO PREFIX "Activating debounce\n");
+ gpio_evmi->flags |= GPIOKPF_DEBOUNCE;
+ }
+ } else {
+ /* Deactivating GPIOKPF_DEBOUNCE */
+ printk(KERN_INFO PREFIX "Deactivating debounce\n");
+ gpio_evmi->flags &= ~GPIOKPF_DEBOUNCE;
+ }
+ printk(KERN_INFO PREFIX "flags: 0x%x\n", gpio_evmi->flags);
+
return 0;
}
static void __exit debounce_exit(void)
{
+ if (gpio_evmi) {
+ if (gpio_evmi->debounce_delay.tv.nsec != old_debounce_delay.tv.nsec) {
+ printk(KERN_INFO PREFIX "Restoring debounce_delay\n");
+ gpio_evmi->debounce_delay = old_debounce_delay;
+ printk(KERN_INFO PREFIX "debounce_delay: %u\n", gpio_evmi->debounce_delay.tv.nsec);
+ }
+ if (gpio_evmi->flags != old_flags) {
+ printk(KERN_INFO PREFIX "Restoring flags\n");
+ gpio_evmi->flags = old_flags;
+ printk(KERN_INFO PREFIX "flags: 0x%x\n", gpio_evmi->flags);
+ }
+ gpio_evmi->settle_time = old_settle_time;
+ gpio_evmi->poll_time = old_poll_time;
+ }
}
module_init(debounce_init);