+/* hardware debounce: (time + 1) * 31us */
+static void hw_debounce_set(int enable, int time) {
+ int i;
+
+ if (gpio_evmi == NULL)
+ return;
+
+ for (i = 0; i < gpio_evmi->ninputs; i++) {
+ int gpio = gpio_evmi->input_gpios[i];
+
+ if ((time != -1) && (time != hw_debounce_time) && hw_debounce) {
+ printk(KERN_INFO PREFIX "Setting hardware debounce time for GPIO %d to %d (%dus)\n", gpio, time, (time+1)*31);
+ omap_set_gpio_debounce_time(gpio, time);
+ }
+
+ if ((enable != -1) && (enable != hw_debounce)) {
+ printk(KERN_INFO PREFIX "%sabling hardware debounce for GPIO %d\n", (enable?"En":"Dis"), gpio);
+ omap_set_gpio_debounce(gpio, enable);
+ }
+ }
+}
+
+static void set_irq_types(void) {
+ int err;
+ unsigned int irq;
+ unsigned long type;
+ int i;
+
+ if (gpio_evmi == NULL)
+ return;
+
+ switch (gpio_evmi->flags & (GPIOKPF_ACTIVE_HIGH|GPIOKPF_LEVEL_TRIGGERED_IRQ)) {
+ default:
+ type = IRQ_TYPE_EDGE_FALLING;
+ break;
+ case GPIOKPF_ACTIVE_HIGH:
+ type = IRQ_TYPE_EDGE_RISING;
+ break;
+ case GPIOKPF_LEVEL_TRIGGERED_IRQ:
+ type = IRQ_TYPE_LEVEL_LOW;
+ break;
+ case GPIOKPF_LEVEL_TRIGGERED_IRQ | GPIOKPF_ACTIVE_HIGH:
+ type = IRQ_TYPE_LEVEL_HIGH;
+ break;
+ }
+
+ printk(KERN_INFO PREFIX "Settinhg IRQ type to 0x%lx\n", type);
+
+ for (i = 0; i < gpio_evmi->ninputs; i++) {
+
+ err = irq = gpio_to_irq(gpio_evmi->input_gpios[i]);
+
+ if (err < 0)
+ return;
+
+ err = set_irq_type(irq, type);
+ }
+}
+
+static ssize_t show_debounce_delay(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ if (!gpio_evmi)
+ return -ENODEV;
+
+ return snprintf(buf, PAGE_SIZE, "%ld\n", (gpio_evmi->debounce_delay.tv.nsec / NSEC_PER_MSEC));
+}
+
+static void set_debounce_delay(long delay)
+{
+ if (gpio_evmi->debounce_delay.tv.nsec != delay * NSEC_PER_MSEC) {
+ printk(KERN_INFO PREFIX "Changing debounce_delay\n");
+ gpio_evmi->debounce_delay.tv.nsec = delay * NSEC_PER_MSEC;
+ printk(KERN_INFO PREFIX "debounce_delay: %u\n", gpio_evmi->debounce_delay.tv.nsec);
+ }
+
+#if 0
+ if (gpio_evmi->debounce_delay.tv.nsec != 0) {
+ if (!(gpio_evmi->flags & GPIOKPF_DEBOUNCE)) {
+ printk(KERN_INFO PREFIX "Activating debounce\n");
+ gpio_evmi->flags |= GPIOKPF_DEBOUNCE;
+ }
+ } else {
+ if (gpio_evmi->flags & GPIOKPF_DEBOUNCE) {
+ printk(KERN_INFO PREFIX "Deactivating debounce\n");
+ gpio_evmi->flags &= ~GPIOKPF_DEBOUNCE;
+ }
+ }
+#endif
+}
+
+static ssize_t store_debounce_delay(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+{
+ long int delay;
+
+ if (!gpio_evmi)
+ return -ENODEV;
+
+ sscanf(buf, "%ld", &delay);
+ set_debounce_delay(delay);
+
+ return count;
+}
+
+static ssize_t show_settle_time(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ if (!gpio_evmi)
+ return -ENODEV;
+
+ return snprintf(buf, PAGE_SIZE, "%ld\n", (gpio_evmi->settle_time.tv.nsec / NSEC_PER_USEC));
+}
+
+static ssize_t store_settle_time(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+{
+ long int delay;
+
+ if (!gpio_evmi)
+ return -ENODEV;
+
+ sscanf(buf, "%ld", &delay);
+ gpio_evmi->settle_time.tv.nsec = delay * NSEC_PER_USEC;
+
+ return count;
+}
+
+static ssize_t show_poll_time(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ if (!gpio_evmi)
+ return -ENODEV;
+
+ return snprintf(buf, PAGE_SIZE, "%ld\n", (gpio_evmi->poll_time.tv.nsec / NSEC_PER_MSEC));
+}
+
+static ssize_t store_poll_time(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+{
+ long int delay;
+
+ if (!gpio_evmi)
+ return -ENODEV;
+
+ sscanf(buf, "%ld", &delay);
+ gpio_evmi->poll_time.tv.nsec = delay * NSEC_PER_MSEC;
+
+ return count;
+}
+
+static ssize_t show_flags(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ if (!gpio_evmi)
+ return -ENODEV;
+
+ return snprintf(buf, PAGE_SIZE, "0x%x\n", gpio_evmi->flags);
+}
+
+static ssize_t store_flags(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+{
+ unsigned flags;
+
+ if (!gpio_evmi)
+ return -ENODEV;
+
+ sscanf(buf, "0x%x", &flags);
+
+ printk(KERN_INFO PREFIX "flags: 0x%x\n", flags);
+
+ gpio_evmi->flags = flags;
+
+ return count;
+}
+
+static ssize_t show_debounce_flag(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ if (!gpio_evmi)
+ return -ENODEV;
+
+ return snprintf(buf, PAGE_SIZE, "%u\n", (gpio_evmi->flags & GPIOKPF_DEBOUNCE) ? 1 : 0);
+}
+
+static ssize_t store_debounce_flag(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+{
+ unsigned flag;
+
+ if (!gpio_evmi)
+ return -ENODEV;
+
+ sscanf(buf, "%u", &flag);
+
+ if (flag) {
+ gpio_evmi->flags |= GPIOKPF_DEBOUNCE;
+ } else {
+ gpio_evmi->flags &= ~GPIOKPF_DEBOUNCE;
+ }
+
+ return count;
+}
+
+static ssize_t show_remove_some_phantom_keys_flag(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ if (!gpio_evmi)
+ return -ENODEV;
+
+ return snprintf(buf, PAGE_SIZE, "%u\n", (gpio_evmi->flags & GPIOKPF_REMOVE_SOME_PHANTOM_KEYS) ? 1 : 0);
+}
+
+static ssize_t store_remove_some_phantom_keys_flag(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+{
+ unsigned flag;
+
+ if (!gpio_evmi)
+ return -ENODEV;
+
+ sscanf(buf, "%u", &flag);
+
+ if (flag) {
+ gpio_evmi->flags |= GPIOKPF_REMOVE_SOME_PHANTOM_KEYS;
+ } else {
+ gpio_evmi->flags &= ~GPIOKPF_REMOVE_SOME_PHANTOM_KEYS;
+ }
+
+ return count;
+}
+
+static ssize_t show_print_unmapped_keys_flag(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ if (!gpio_evmi)
+ return -ENODEV;
+
+ return snprintf(buf, PAGE_SIZE, "%u\n", (gpio_evmi->flags & GPIOKPF_PRINT_UNMAPPED_KEYS) ? 1 : 0);
+}
+
+static ssize_t store_print_unmapped_keys_flag(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+{
+ unsigned flag;
+
+ if (!gpio_evmi)
+ return -ENODEV;
+
+ sscanf(buf, "%u", &flag);
+
+ if (flag) {
+ gpio_evmi->flags |= GPIOKPF_PRINT_UNMAPPED_KEYS;
+ } else {
+ gpio_evmi->flags &= ~GPIOKPF_PRINT_UNMAPPED_KEYS;
+ }
+
+ return count;
+}
+
+static ssize_t show_print_mapped_keys_flag(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ if (!gpio_evmi)
+ return -ENODEV;
+
+ return snprintf(buf, PAGE_SIZE, "%u\n", (gpio_evmi->flags & GPIOKPF_PRINT_MAPPED_KEYS) ? 1 : 0);
+}
+
+static ssize_t store_print_mapped_keys_flag(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+{
+ unsigned flag;
+
+ if (!gpio_evmi)
+ return -ENODEV;
+
+ sscanf(buf, "%u", &flag);
+
+ if (flag) {
+ gpio_evmi->flags |= GPIOKPF_PRINT_MAPPED_KEYS;
+ } else {
+ gpio_evmi->flags &= ~GPIOKPF_PRINT_MAPPED_KEYS;
+ }
+
+ return count;
+}
+
+static ssize_t show_print_phantom_keys_flag(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ if (!gpio_evmi)
+ return -ENODEV;
+
+ return snprintf(buf, PAGE_SIZE, "%u\n", (gpio_evmi->flags & GPIOKPF_PRINT_PHANTOM_KEYS) ? 1 : 0);
+}
+
+static ssize_t store_print_phantom_keys_flag(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+{
+ unsigned flag;
+
+ if (!gpio_evmi)
+ return -ENODEV;
+
+ sscanf(buf, "%u", &flag);
+
+ if (flag) {
+ gpio_evmi->flags |= GPIOKPF_PRINT_PHANTOM_KEYS;
+ } else {
+ gpio_evmi->flags &= ~GPIOKPF_PRINT_PHANTOM_KEYS;
+ }
+
+ return count;
+}
+
+static ssize_t show_active_high_flag(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ if (!gpio_evmi)
+ return -ENODEV;
+
+ return snprintf(buf, PAGE_SIZE, "%u\n", (gpio_evmi->flags & GPIOKPF_ACTIVE_HIGH) ? 1 : 0);
+}
+
+static ssize_t store_active_high_flag(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+{
+ unsigned flag;
+ int i;
+
+ if (!gpio_evmi)
+ return -ENODEV;
+
+ sscanf(buf, "%u", &flag);
+
+ if (flag) {
+ gpio_evmi->flags |= GPIOKPF_ACTIVE_HIGH;
+ for (i = 0x7a; i <= 0x88; i += 2) {
+ __raw_writew(PADCONF_PULL_DOWN, OMAP_CTRL_REGADDR(i));
+ }
+ } else {
+ gpio_evmi->flags &= ~GPIOKPF_ACTIVE_HIGH;
+ for (i = 0x7a; i <= 0x88; i += 2) {
+ __raw_writew(PADCONF_PULL_UP, OMAP_CTRL_REGADDR(i));
+ }
+ }
+
+ set_irq_types();
+
+ return count;
+}
+
+static ssize_t show_level_triggered_irq_flag(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ if (!gpio_evmi)
+ return -ENODEV;
+
+ return snprintf(buf, PAGE_SIZE, "%u\n", (gpio_evmi->flags & GPIOKPF_LEVEL_TRIGGERED_IRQ) ? 1 : 0);
+}
+
+static ssize_t store_level_triggered_irq_flag(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+{
+ unsigned flag;
+
+ if (!gpio_evmi)
+ return -ENODEV;
+
+ sscanf(buf, "%u", &flag);
+
+ if (flag) {
+ gpio_evmi->flags |= GPIOKPF_LEVEL_TRIGGERED_IRQ;
+ } else {
+ gpio_evmi->flags &= ~GPIOKPF_LEVEL_TRIGGERED_IRQ;
+ }
+
+ set_irq_types();
+
+ return count;
+}
+
+static ssize_t show_drive_inactive_flag(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ if (!gpio_evmi)
+ return -ENODEV;
+
+ return snprintf(buf, PAGE_SIZE, "%u\n", (gpio_evmi->flags & GPIOKPF_DRIVE_INACTIVE) ? 1 : 0);
+}
+
+static ssize_t store_drive_inactive_flag(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+{
+ unsigned flag;
+
+ if (!gpio_evmi)
+ return -ENODEV;
+
+ sscanf(buf, "%u", &flag);
+
+ if (flag) {
+ gpio_evmi->flags |= GPIOKPF_DRIVE_INACTIVE;
+ } else {
+ gpio_evmi->flags &= ~GPIOKPF_DRIVE_INACTIVE;
+ }
+
+ return count;
+}
+
+static ssize_t show_hw_debounce(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", hw_debounce);
+}
+
+static ssize_t store_hw_debounce(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+{
+ int enable;
+
+ sscanf(buf, "%d", &enable);
+
+ if (enable) {
+ hw_debounce_set(1, -1);
+ hw_debounce = 1;
+ }
+ else {
+ hw_debounce_set(-1, 0);
+ hw_debounce_set(0, -1);
+ hw_debounce = 0;
+ hw_debounce_time = 0;
+ }
+
+ return count;
+}
+
+static ssize_t show_hw_debounce_time(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", hw_debounce_time);
+}
+
+static ssize_t store_hw_debounce_time(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+{
+ int time;
+
+ sscanf(buf, "%d", &time);
+
+ if ((time < 0) || (time > 0xff))
+ return count;
+
+ if (!hw_debounce)
+ return count;
+
+ hw_debounce_set(-1, time);
+ hw_debounce_time = time;
+
+ return count;
+}
+
+static DEVICE_ATTR(debounce_delay, (S_IRUGO | S_IWUGO), show_debounce_delay, store_debounce_delay);
+static DEVICE_ATTR(settle_time, (S_IRUGO | S_IWUGO), show_settle_time, store_settle_time);
+static DEVICE_ATTR(poll_time, (S_IRUGO | S_IWUGO), show_poll_time, store_poll_time);
+static DEVICE_ATTR(flags, (S_IRUGO), show_flags, store_flags);
+static DEVICE_ATTR(debounce_flag, (S_IRUGO | S_IWUGO), show_debounce_flag, store_debounce_flag);
+static DEVICE_ATTR(remove_some_phantom_keys_flag, (S_IRUGO | S_IWUGO), show_remove_some_phantom_keys_flag, store_remove_some_phantom_keys_flag);
+static DEVICE_ATTR(print_unmapped_keys_flag, (S_IRUGO | S_IWUGO), show_print_unmapped_keys_flag, store_print_unmapped_keys_flag);
+static DEVICE_ATTR(print_mapped_keys_flag, (S_IRUGO | S_IWUGO), show_print_mapped_keys_flag, store_print_mapped_keys_flag);
+static DEVICE_ATTR(print_phantom_keys_flag, (S_IRUGO | S_IWUGO), show_print_phantom_keys_flag, store_print_phantom_keys_flag);
+static DEVICE_ATTR(active_high_flag, (S_IRUGO | S_IWUGO), show_active_high_flag, store_active_high_flag);
+static DEVICE_ATTR(level_triggered_irq_flag, (S_IRUGO | S_IWUGO), show_level_triggered_irq_flag, store_level_triggered_irq_flag);
+static DEVICE_ATTR(drive_inactive_flag, (S_IRUGO | S_IWUGO), show_drive_inactive_flag, store_drive_inactive_flag);
+static DEVICE_ATTR(hw_debounce, (S_IRUGO | S_IWUGO), show_hw_debounce, store_hw_debounce);
+static DEVICE_ATTR(hw_debounce_time, (S_IRUGO | S_IWUGO), show_hw_debounce_time, store_hw_debounce_time);
+
+#if 0
+static int debounce_fixup(int index)
+{
+ int ret;
+
+ printk(KERN_INFO PREFIX "key_state_changed: %d, last_key_state_changed: %d, some_keys_pressed: %d\n",
+ gpio_kp_state->key_state_changed,
+ gpio_kp_state->last_key_state_changed,
+ gpio_kp_state->some_keys_pressed);
+
+ ret = old_sw_fixup(index);
+ if (!ret)
+ printk(KERN_INFO PREFIX "Index 0x%x ignored!\n", index);
+
+ return ret;
+}
+#endif
+
+static void debounce_release(struct device *dev)
+{
+}
+
+static struct device debounce_device = {
+ .init_name = "debounce",
+ .release = debounce_release,
+};
+
projects / ms2-fixes / blobdiff