diff options
Diffstat (limited to 'drivers/input/input.c')
| -rw-r--r-- | drivers/input/input.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/input/input.c b/drivers/input/input.c index 935a1835de2d..e54e002665b0 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -29,6 +29,23 @@ MODULE_LICENSE("GPL"); #define INPUT_DEVICES 256 +/* + * EV_ABS events which should not be cached are listed here. + */ +static unsigned int input_abs_bypass_init_data[] __initdata = { + ABS_MT_TOUCH_MAJOR, + ABS_MT_TOUCH_MINOR, + ABS_MT_WIDTH_MAJOR, + ABS_MT_WIDTH_MINOR, + ABS_MT_ORIENTATION, + ABS_MT_POSITION_X, + ABS_MT_POSITION_Y, + ABS_MT_TOOL_TYPE, + ABS_MT_BLOB_ID, + 0 +}; +static unsigned long input_abs_bypass[BITS_TO_LONGS(ABS_CNT)]; + static LIST_HEAD(input_dev_list); static LIST_HEAD(input_handler_list); @@ -161,6 +178,10 @@ static void input_handle_event(struct input_dev *dev, disposition = INPUT_PASS_TO_HANDLERS; } break; + case SYN_MT_REPORT: + dev->sync = 0; + disposition = INPUT_PASS_TO_HANDLERS; + break; } break; @@ -192,6 +213,11 @@ static void input_handle_event(struct input_dev *dev, case EV_ABS: if (is_event_supported(code, dev->absbit, ABS_MAX)) { + if (test_bit(code, input_abs_bypass)) { + disposition = INPUT_PASS_TO_HANDLERS; + break; + } + value = input_defuzz_abs_event(value, dev->abs[code], dev->absfuzz[code]); @@ -1634,10 +1660,20 @@ static const struct file_operations input_fops = { .open = input_open_file, }; +static void __init input_init_abs_bypass(void) +{ + const unsigned int *p; + + for (p = input_abs_bypass_init_data; *p; p++) + input_abs_bypass[BIT_WORD(*p)] |= BIT_MASK(*p); +} + static int __init input_init(void) { int err; + input_init_abs_bypass(); + err = class_register(&input_class); if (err) { printk(KERN_ERR "input: unable to register input_dev class\n"); |