diff options
Diffstat (limited to 'drivers/input')
| -rw-r--r-- | drivers/input/input.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/input/input.c b/drivers/input/input.c index 2d37b394e38..ef5824c8846 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -528,10 +528,49 @@ INPUT_DEV_STRING_ATTR_SHOW(name); INPUT_DEV_STRING_ATTR_SHOW(phys); INPUT_DEV_STRING_ATTR_SHOW(uniq); +static int print_modalias_bits(char *buf, char prefix, unsigned long *arr, + unsigned int min, unsigned int max) +{ + int len, i; + + len = sprintf(buf, "%c", prefix); + for (i = min; i < max; i++) + if (arr[LONG(i)] & BIT(i)) + len += sprintf(buf+len, "%X,", i); + return len; +} + +static ssize_t input_dev_show_modalias(struct class_device *dev, char *buf) +{ + struct input_dev *id = to_input_dev(dev); + ssize_t len = 0; + + len += sprintf(buf+len, "input:b%04Xv%04Xp%04Xe%04X-", + id->id.bustype, + id->id.vendor, + id->id.product, + id->id.version); + + len += print_modalias_bits(buf+len, 'e', id->evbit, 0, EV_MAX); + len += print_modalias_bits(buf+len, 'k', id->keybit, + KEY_MIN_INTERESTING, KEY_MAX); + len += print_modalias_bits(buf+len, 'r', id->relbit, 0, REL_MAX); + len += print_modalias_bits(buf+len, 'a', id->absbit, 0, ABS_MAX); + len += print_modalias_bits(buf+len, 'm', id->mscbit, 0, MSC_MAX); + len += print_modalias_bits(buf+len, 'l', id->ledbit, 0, LED_MAX); + len += print_modalias_bits(buf+len, 's', id->sndbit, 0, SND_MAX); + len += print_modalias_bits(buf+len, 'f', id->ffbit, 0, FF_MAX); + len += print_modalias_bits(buf+len, 'w', id->swbit, 0, SW_MAX); + len += sprintf(buf+len, "\n"); + return len; +} +static CLASS_DEVICE_ATTR(modalias, S_IRUGO, input_dev_show_modalias, NULL); + static struct attribute *input_dev_attrs[] = { &class_device_attr_name.attr, &class_device_attr_phys.attr, &class_device_attr_uniq.attr, + &class_device_attr_modalias.attr, NULL }; |