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HID: hid-sensor-hub: Add logical min and max 

Exporting logical minimum and maximum of HID fields as part of the
hid sensor attribute info. This can be used for range checking and
to calculate enumeration base for NAry fields of HID sensor hub.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Srinivas Pandruvada 2013-11-27 22:19:00 +00:00 committed by Jonathan Cameron
parent 930ba4a374
commit 9f740ffa81
2 changed files with 10 additions and 12 deletions
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20
drivers/hid/hid-sensor-hub.c
View File

@ -112,13 +112,15 @@ static int sensor_hub_get_physical_device_count(
static void sensor_hub_fill_attr_info(
struct hid_sensor_hub_attribute_info *info,
s32 index, s32 report_id, s32 units, s32 unit_expo, s32 size)
s32 index, s32 report_id, struct hid_field *field)
{
info->index = index;
info->report_id = report_id;
info->units = units;
info->unit_expo = unit_expo;
info->size = size/8;
info->units = field->unit;
info->unit_expo = field->unit_exponent;
info->size = (field->report_size * field->report_count)/8;
info->logical_minimum = field->logical_minimum;
info->logical_maximum = field->logical_maximum;
}
static struct hid_sensor_hub_callbacks *sensor_hub_get_callback(
@ -325,9 +327,7 @@ int sensor_hub_input_get_attribute_info(struct hid_sensor_hub_device *hsdev,
if (field->physical == usage_id &&
field->logical == attr_usage_id) {
sensor_hub_fill_attr_info(info, i, report->id,
field->unit, field->unit_exponent,
field->report_size *
field->report_count);
field);
ret = 0;
} else {
for (j = 0; j < field->maxusage; ++j) {
@ -336,11 +336,7 @@ int sensor_hub_input_get_attribute_info(struct hid_sensor_hub_device *hsdev,
field->usage[j].collection_index ==
collection_index) {
sensor_hub_fill_attr_info(info,
i, report->id,
field->unit,
field->unit_exponent,
field->report_size *
field->report_count);
i, report->id, field);
ret = 0;
break;
}

2
include/linux/hid-sensor-hub.h
View File

@ -42,6 +42,8 @@ struct hid_sensor_hub_attribute_info {
s32 units;
s32 unit_expo;
s32 size;
s32 logical_minimum;
s32 logical_maximum;
};
/**