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hidraw: actually store the list of available report IDs

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Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
This commit is contained in:
Benjamin Tissoires
2015-09-12 10:16:47 -04:00
parent d065bda3a6
commit 84cfedbf5f
2 changed files with 26 additions and 11 deletions
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35
src/libratbag-hidraw.c
View File

@@ -42,9 +42,12 @@ static int
ratbag_hidraw_parse_report_descriptor(struct ratbag_device *device)
{
int rc, desc_size = 0;
struct ratbag_hidraw *hidraw = &device->hidraw;
struct hidraw_report_descriptor report_desc = {0};
unsigned int i, j;
hidraw->num_report_ids = 0;
rc = ioctl(device->hidraw.fd, HIDIOCGRDESCSIZE, &desc_size);
if (rc < 0)
return rc;
@@ -54,10 +57,6 @@ ratbag_hidraw_parse_report_descriptor(struct ratbag_device *device)
if (rc < 0)
return rc;
log_buf_error(device->ratbag,
"Report Descriptor:\n",
report_desc.value, report_desc.size);
i = 0;
while (i < report_desc.size) {
uint8_t value = report_desc.value[i];
@@ -70,16 +69,19 @@ ratbag_hidraw_parse_report_descriptor(struct ratbag_device *device)
if (i + size >= report_desc.size)
return -EPROTO;
if (hid == HID_REPORT_ID)
log_error(device->ratbag, "main item: %02x\n", hid);
if (hid == HID_REPORT_ID) {
unsigned report_id = 0;
for (j = 0; j < size; j++) {
value = report_desc.value[i + j + 1];
if (hid == HID_REPORT_ID)
log_error(device->ratbag, " %02x\n", value);
for (j = 0; j < size; j++) {
report_id |= report_desc.value[i + j + 1] << ((size - j - 1) * 8);
log_debug(device->ratbag, "report ID %02x\n", report_id);
if (hidraw->report_ids)
hidraw->report_ids[hidraw->num_report_ids] = report_id;
hidraw->num_report_ids++;
}
}
i += 1 + j;
i += 1 + size;
}
return 0;
@@ -110,6 +112,7 @@ ratbag_open_hidraw(struct ratbag_device *device)
device->hidraw.fd = fd;
/* parse first to count the number of reports */
res = ratbag_hidraw_parse_report_descriptor(device);
if (res) {
log_error(device->ratbag,
@@ -120,6 +123,11 @@ ratbag_open_hidraw(struct ratbag_device *device)
goto err;
}
if (device->hidraw.num_report_ids) {
device->hidraw.report_ids = zalloc(device->hidraw.num_report_ids *
sizeof(uint8_t));
ratbag_hidraw_parse_report_descriptor(device);
}
return 0;
@@ -137,6 +145,11 @@ ratbag_close_hidraw(struct ratbag_device *device)
ratbag_close_fd(device, device->hidraw.fd);
device->hidraw.fd = -1;
if (device->hidraw.report_ids) {
free(device->hidraw.report_ids);
device->hidraw.report_ids = NULL;
}
}
int

2
src/libratbag-hidraw.h
View File

@@ -36,6 +36,8 @@
struct ratbag_hidraw {
int fd;
uint8_t *report_ids;
unsigned num_report_ids;
};
/**