static void logi_dj_remove(struct hid_device *hdev)
{
struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
struct dj_device *dj_dev;
int i;
dbg_hid("%s\n", __func__);
cancel_work_sync(&djrcv_dev->work);
hid_hw_close(hdev);
hid_hw_stop(hdev);
/* I suppose that at this point the only context that can access
* the djrecv_data is this thread as the work item is guaranteed to
* have finished and no more raw_event callbacks should arrive after
* the remove callback was triggered so no locks are put around the
* code below */
for (i = 0; i < (DJ_MAX_PAIRED_DEVICES + DJ_DEVICE_INDEX_MIN); i++) {
dj_dev = djrcv_dev->paired_dj_devices[i];
if (dj_dev != NULL) {
hid_destroy_device(dj_dev->hdev);
kfree(dj_dev);
djrcv_dev->paired_dj_devices[i] = NULL;
}
}
kfifo_free(&djrcv_dev->notif_fifo);
kfree(djrcv_dev);
hid_set_drvdata(hdev, NULL);
}
static void picolcd_remove(struct hid_device *hdev)
{
struct picolcd_data *data = hid_get_drvdata(hdev);
unsigned long flags;
dbg_hid(PICOLCD_NAME " hardware remove...\n");
spin_lock_irqsave(&data->lock, flags);
data->status |= PICOLCD_FAILED;
spin_unlock_irqrestore(&data->lock, flags);
picolcd_exit_devfs(data);
device_remove_file(&hdev->dev, &dev_attr_operation_mode);
device_remove_file(&hdev->dev, &dev_attr_operation_mode_delay);
hid_hw_close(hdev);
hid_hw_stop(hdev);
/* Shortcut potential pending reply that will never arrive */
spin_lock_irqsave(&data->lock, flags);
if (data->pending)
complete(&data->pending->ready);
spin_unlock_irqrestore(&data->lock, flags);
/* Cleanup LED */
picolcd_exit_leds(data);
/* Clean up the framebuffer */
picolcd_exit_backlight(data);
picolcd_exit_lcd(data);
picolcd_exit_framebuffer(data);
/* Cleanup input */
picolcd_exit_cir(data);
picolcd_exit_keys(data);
hid_set_drvdata(hdev, NULL);
mutex_destroy(&data->mutex);
/* Finally, clean up the picolcd data itself */
kfree(data);
}
static int logi_dj_probe(struct hid_device *hdev,
const struct hid_device_id *id)
{
struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
struct dj_receiver_dev *djrcv_dev;
int retval;
if (is_dj_device((struct dj_device *)hdev->driver_data))
return -ENODEV;
dbg_hid("%s called for ifnum %d\n", __func__,
intf->cur_altsetting->desc.bInterfaceNumber);
/* Ignore interfaces 0 and 1, they will not carry any data, dont create
* any hid_device for them */
if (intf->cur_altsetting->desc.bInterfaceNumber !=
LOGITECH_DJ_INTERFACE_NUMBER) {
dbg_hid("%s: ignoring ifnum %d\n", __func__,
intf->cur_altsetting->desc.bInterfaceNumber);
return -ENODEV;
}
/* Treat interface 2 */
djrcv_dev = kzalloc(sizeof(struct dj_receiver_dev), GFP_KERNEL);
if (!djrcv_dev) {
dev_err(&hdev->dev,
"%s:failed allocating dj_receiver_dev\n", __func__);
return -ENOMEM;
}
djrcv_dev->hdev = hdev;
INIT_WORK(&djrcv_dev->work, delayedwork_callback);
spin_lock_init(&djrcv_dev->lock);
if (kfifo_alloc(&djrcv_dev->notif_fifo,
DJ_MAX_NUMBER_NOTIFICATIONS * sizeof(struct dj_report),
GFP_KERNEL)) {
dev_err(&hdev->dev,
"%s:failed allocating notif_fifo\n", __func__);
kfree(djrcv_dev);
return -ENOMEM;
}
hid_set_drvdata(hdev, djrcv_dev);
/* Call to usbhid to fetch the HID descriptors of interface 2 and
* subsequently call to the hid/hid-core to parse the fetched
* descriptors, this will in turn create the hidraw and hiddev nodes
* for interface 2 of the receiver */
retval = hid_parse(hdev);
if (retval) {
dev_err(&hdev->dev,
"%s:parse of interface 2 failed\n", __func__);
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);
if (retval) {
dev_err(&hdev->dev,
"%s:hid_hw_start returned error\n", __func__);
goto hid_hw_start_fail;
}
retval = logi_dj_recv_switch_to_dj_mode(djrcv_dev, 0);
if (retval < 0) {
dev_err(&hdev->dev,
"%s:logi_dj_recv_switch_to_dj_mode returned error:%d\n",
__func__, retval);
goto switch_to_dj_mode_fail;
}
/* This is enabling the polling urb on the IN endpoint */
retval = hid_hw_open(hdev);
if (retval < 0) {
dev_err(&hdev->dev, "%s:hid_hw_open returned error:%d\n",
__func__, retval);
goto llopen_failed;
}
/* Allow incoming packets to arrive: */
hid_device_io_start(hdev);
retval = logi_dj_recv_query_paired_devices(djrcv_dev);
if (retval < 0) {
dev_err(&hdev->dev, "%s:logi_dj_recv_query_paired_devices "
"error:%d\n", __func__, retval);
goto logi_dj_recv_query_paired_devices_failed;
}
return retval;
logi_dj_recv_query_paired_devices_failed:
hid_hw_close(hdev);
llopen_failed:
switch_to_dj_mode_fail:
hid_hw_stop(hdev);
hid_hw_start_fail:
hid_parse_fail:
kfifo_free(&djrcv_dev->notif_fifo);
kfree(djrcv_dev);
hid_set_drvdata(hdev, NULL);
return retval;
}
static void wiimote_input_close(struct input_dev *dev)
{
struct wiimote_data *wdata = input_get_drvdata(dev);
hid_hw_close(wdata->hdev);
}
static void ax_remove(struct hid_device *hdev)
{
hid_hw_close(hdev);
hid_hw_stop(hdev);
}
static int picolcd_probe(struct hid_device *hdev,
const struct hid_device_id *id)
{
struct picolcd_data *data;
int error = -ENOMEM;
dbg_hid(PICOLCD_NAME " hardware probe...\n");
/*
* Let's allocate the picolcd data structure, set some reasonable
* defaults, and associate it with the device
*/
data = kzalloc(sizeof(struct picolcd_data), GFP_KERNEL);
if (data == NULL) {
hid_err(hdev, "can't allocate space for Minibox PicoLCD device data\n");
error = -ENOMEM;
goto err_no_cleanup;
}
spin_lock_init(&data->lock);
mutex_init(&data->mutex);
data->hdev = hdev;
data->opmode_delay = 5000;
if (hdev->product == USB_DEVICE_ID_PICOLCD_BOOTLOADER)
data->status |= PICOLCD_BOOTLOADER;
hid_set_drvdata(hdev, data);
/* Parse the device reports and start it up */
error = hid_parse(hdev);
if (error) {
hid_err(hdev, "device report parse failed\n");
goto err_cleanup_data;
}
error = hid_hw_start(hdev, 0);
if (error) {
hid_err(hdev, "hardware start failed\n");
goto err_cleanup_data;
}
error = hid_hw_open(hdev);
if (error) {
hid_err(hdev, "failed to open input interrupt pipe for key and IR events\n");
goto err_cleanup_hid_hw;
}
error = device_create_file(&hdev->dev, &dev_attr_operation_mode_delay);
if (error) {
hid_err(hdev, "failed to create sysfs attributes\n");
goto err_cleanup_hid_ll;
}
error = device_create_file(&hdev->dev, &dev_attr_operation_mode);
if (error) {
hid_err(hdev, "failed to create sysfs attributes\n");
goto err_cleanup_sysfs1;
}
if (data->status & PICOLCD_BOOTLOADER)
error = picolcd_probe_bootloader(hdev, data);
else
error = picolcd_probe_lcd(hdev, data);
if (error)
goto err_cleanup_sysfs2;
dbg_hid(PICOLCD_NAME " activated and initialized\n");
return 0;
err_cleanup_sysfs2:
device_remove_file(&hdev->dev, &dev_attr_operation_mode);
err_cleanup_sysfs1:
device_remove_file(&hdev->dev, &dev_attr_operation_mode_delay);
err_cleanup_hid_ll:
hid_hw_close(hdev);
err_cleanup_hid_hw:
hid_hw_stop(hdev);
err_cleanup_data:
kfree(data);
err_no_cleanup:
hid_set_drvdata(hdev, NULL);
return error;
}
static void udraw_close(struct input_dev *dev)
{
struct udraw *udraw = input_get_drvdata(dev);
hid_hw_close(udraw->hdev);
}
