#include <linux/hid.h>
#include <linux/module.h>
#include <linux/usb.h>
+#include <asm/unaligned.h>
#include "usbhid/usbhid.h"
#include "hid-ids.h"
#include "hid-logitech-dj.h"
static int logi_dj_output_hidraw_report(struct hid_device *hid, u8 * buf,
size_t count,
unsigned char report_type);
+static int logi_dj_recv_query_paired_devices(struct dj_receiver_dev *djrcv_dev);
static void logi_dj_recv_destroy_djhid_device(struct dj_receiver_dev *djrcv_dev,
struct dj_report *dj_report)
if (dj_report->report_params[DEVICE_PAIRED_PARAM_SPFUNCTION] &
SPFUNCTION_DEVICE_LIST_EMPTY) {
dbg_hid("%s: device list is empty\n", __func__);
+ djrcv_dev->querying_devices = false;
return;
}
- if ((dj_report->device_index < DJ_DEVICE_INDEX_MIN) ||
- (dj_report->device_index > DJ_DEVICE_INDEX_MAX)) {
- dev_err(&djrcv_hdev->dev, "%s: invalid device index:%d\n",
- __func__, dj_report->device_index);
+ if (djrcv_dev->paired_dj_devices[dj_report->device_index]) {
+ /* The device is already known. No need to reallocate it. */
+ dbg_hid("%s: device is already known\n", __func__);
return;
}
goto dj_device_allocate_fail;
}
- dj_dev->reports_supported = le32_to_cpu(
- dj_report->report_params[DEVICE_PAIRED_RF_REPORT_TYPE]);
+ dj_dev->reports_supported = get_unaligned_le32(
+ dj_report->report_params + DEVICE_PAIRED_RF_REPORT_TYPE);
dj_dev->hdev = dj_hiddev;
dj_dev->dj_receiver_dev = djrcv_dev;
dj_dev->device_index = dj_report->device_index;
struct dj_report dj_report;
unsigned long flags;
int count;
+ int retval;
dbg_hid("%s\n", __func__);
logi_dj_recv_destroy_djhid_device(djrcv_dev, &dj_report);
break;
default:
+ /* A normal report (i. e. not belonging to a pair/unpair notification)
+ * arriving here, means that the report arrived but we did not have a
+ * paired dj_device associated to the report's device_index, this
+ * means that the original "device paired" notification corresponding
+ * to this dj_device never arrived to this driver. The reason is that
+ * hid-core discards all packets coming from a device while probe() is
+ * executing. */
+ if (!djrcv_dev->paired_dj_devices[dj_report.device_index]) {
+ /* ok, we don't know the device, just re-ask the
+ * receiver for the list of connected devices. */
+ retval = logi_dj_recv_query_paired_devices(djrcv_dev);
+ if (!retval) {
+ /* everything went fine, so just leave */
+ break;
+ }
+ dev_err(&djrcv_dev->hdev->dev,
+ "%s:logi_dj_recv_query_paired_devices "
+ "error:%d\n", __func__, retval);
+ }
dbg_hid("%s: unexpected report type\n", __func__);
}
}
if (!djdev) {
dbg_hid("djrcv_dev->paired_dj_devices[dj_report->device_index]"
" is NULL, index %d\n", dj_report->device_index);
+ kfifo_in(&djrcv_dev->notif_fifo, dj_report, sizeof(struct dj_report));
+
+ if (schedule_work(&djrcv_dev->work) == 0) {
+ dbg_hid("%s: did not schedule the work item, was already "
+ "queued\n", __func__);
+ }
return;
}
if (dj_device == NULL) {
dbg_hid("djrcv_dev->paired_dj_devices[dj_report->device_index]"
" is NULL, index %d\n", dj_report->device_index);
+ kfifo_in(&djrcv_dev->notif_fifo, dj_report, sizeof(struct dj_report));
+
+ if (schedule_work(&djrcv_dev->work) == 0) {
+ dbg_hid("%s: did not schedule the work item, was already "
+ "queued\n", __func__);
+ }
return;
}
static int logi_dj_recv_query_paired_devices(struct dj_receiver_dev *djrcv_dev)
{
- struct dj_report dj_report;
+ struct dj_report *dj_report;
+ int retval;
+
+ /* no need to protect djrcv_dev->querying_devices */
+ if (djrcv_dev->querying_devices)
+ return 0;
- memset(&dj_report, 0, sizeof(dj_report));
- dj_report.report_id = REPORT_ID_DJ_SHORT;
- dj_report.device_index = 0xFF;
- dj_report.report_type = REPORT_TYPE_CMD_GET_PAIRED_DEVICES;
- return logi_dj_recv_send_report(djrcv_dev, &dj_report);
+ dj_report = kzalloc(sizeof(struct dj_report), GFP_KERNEL);
+ if (!dj_report)
+ return -ENOMEM;
+ dj_report->report_id = REPORT_ID_DJ_SHORT;
+ dj_report->device_index = 0xFF;
+ dj_report->report_type = REPORT_TYPE_CMD_GET_PAIRED_DEVICES;
+ retval = logi_dj_recv_send_report(djrcv_dev, dj_report);
+ kfree(dj_report);
+ return retval;
}
+
static int logi_dj_recv_switch_to_dj_mode(struct dj_receiver_dev *djrcv_dev,
unsigned timeout)
{
- struct dj_report dj_report;
+ struct dj_report *dj_report;
+ int retval;
- memset(&dj_report, 0, sizeof(dj_report));
- dj_report.report_id = REPORT_ID_DJ_SHORT;
- dj_report.device_index = 0xFF;
- dj_report.report_type = REPORT_TYPE_CMD_SWITCH;
- dj_report.report_params[CMD_SWITCH_PARAM_DEVBITFIELD] = 0x1F;
- dj_report.report_params[CMD_SWITCH_PARAM_TIMEOUT_SECONDS] = (u8)timeout;
- return logi_dj_recv_send_report(djrcv_dev, &dj_report);
+ dj_report = kzalloc(sizeof(struct dj_report), GFP_KERNEL);
+ if (!dj_report)
+ return -ENOMEM;
+ dj_report->report_id = REPORT_ID_DJ_SHORT;
+ dj_report->device_index = 0xFF;
+ dj_report->report_type = REPORT_TYPE_CMD_SWITCH;
+ dj_report->report_params[CMD_SWITCH_PARAM_DEVBITFIELD] = 0x3F;
+ dj_report->report_params[CMD_SWITCH_PARAM_TIMEOUT_SECONDS] = (u8)timeout;
+ retval = logi_dj_recv_send_report(djrcv_dev, dj_report);
+ kfree(dj_report);
+ return retval;
}
struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
struct dj_report *dj_report = (struct dj_report *) data;
unsigned long flags;
- bool report_processed = false;
dbg_hid("%s, size:%d\n", __func__, size);
* anything else with it.
*/
+ /* case 1) */
+ if (data[0] != REPORT_ID_DJ_SHORT)
+ return false;
+
+ if ((dj_report->device_index < DJ_DEVICE_INDEX_MIN) ||
+ (dj_report->device_index > DJ_DEVICE_INDEX_MAX)) {
+ /*
+ * Device index is wrong, bail out.
+ * This driver can ignore safely the receiver notifications,
+ * so ignore those reports too.
+ */
+ if (dj_report->device_index != DJ_RECEIVER_INDEX)
+ dev_err(&hdev->dev, "%s: invalid device index:%d\n",
+ __func__, dj_report->device_index);
+ return false;
+ }
+
spin_lock_irqsave(&djrcv_dev->lock, flags);
- if (dj_report->report_id == REPORT_ID_DJ_SHORT) {
- switch (dj_report->report_type) {
- case REPORT_TYPE_NOTIF_DEVICE_PAIRED:
- case REPORT_TYPE_NOTIF_DEVICE_UNPAIRED:
- logi_dj_recv_queue_notification(djrcv_dev, dj_report);
- break;
- case REPORT_TYPE_NOTIF_CONNECTION_STATUS:
- if (dj_report->report_params[CONNECTION_STATUS_PARAM_STATUS] ==
- STATUS_LINKLOSS) {
- logi_dj_recv_forward_null_report(djrcv_dev, dj_report);
- }
- break;
- default:
- logi_dj_recv_forward_report(djrcv_dev, dj_report);
+ switch (dj_report->report_type) {
+ case REPORT_TYPE_NOTIF_DEVICE_PAIRED:
+ case REPORT_TYPE_NOTIF_DEVICE_UNPAIRED:
+ logi_dj_recv_queue_notification(djrcv_dev, dj_report);
+ break;
+ case REPORT_TYPE_NOTIF_CONNECTION_STATUS:
+ if (dj_report->report_params[CONNECTION_STATUS_PARAM_STATUS] ==
+ STATUS_LINKLOSS) {
+ logi_dj_recv_forward_null_report(djrcv_dev, dj_report);
}
- report_processed = true;
+ break;
+ default:
+ logi_dj_recv_forward_report(djrcv_dev, dj_report);
}
spin_unlock_irqrestore(&djrcv_dev->lock, flags);
- return report_processed;
+ return true;
}
static int logi_dj_probe(struct hid_device *hdev,
goto hid_parse_fail;
}
+ if (!hid_validate_values(hdev, HID_OUTPUT_REPORT, REPORT_ID_DJ_SHORT,
+ 0, DJREPORT_SHORT_LENGTH - 1)) {
+ retval = -ENODEV;
+ goto hid_parse_fail;
+ }
+
/* Starts the usb device and connects to upper interfaces hiddev and
* hidraw */
retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
git.openpandora.org / pandora-kernel.git / blobdiff