}
-
-/**************************************************************************
- * File Operations Interface
- **************************************************************************/
-
-/*
- * si470x_fops_open - file open
- */
int si470x_fops_open(struct file *file)
{
- struct si470x_device *radio = video_drvdata(file);
- int retval = v4l2_fh_open(file);
-
- if (retval)
- return retval;
-
- retval = usb_autopm_get_interface(radio->intf);
- if (retval < 0)
- goto done;
-
- if (v4l2_fh_is_singular_file(file)) {
- /* start radio */
- retval = si470x_start(radio);
- if (retval < 0) {
- usb_autopm_put_interface(radio->intf);
- goto done;
- }
-
- /* initialize interrupt urb */
- usb_fill_int_urb(radio->int_in_urb, radio->usbdev,
- usb_rcvintpipe(radio->usbdev,
- radio->int_in_endpoint->bEndpointAddress),
- radio->int_in_buffer,
- le16_to_cpu(radio->int_in_endpoint->wMaxPacketSize),
- si470x_int_in_callback,
- radio,
- radio->int_in_endpoint->bInterval);
-
- radio->int_in_running = 1;
- mb();
-
- retval = usb_submit_urb(radio->int_in_urb, GFP_KERNEL);
- if (retval) {
- dev_info(&radio->intf->dev,
- "submitting int urb failed (%d)\n", retval);
- radio->int_in_running = 0;
- usb_autopm_put_interface(radio->intf);
- }
- }
-
-done:
- if (retval)
- v4l2_fh_release(file);
- return retval;
+ return v4l2_fh_open(file);
}
-
-/*
- * si470x_fops_release - file release
- */
int si470x_fops_release(struct file *file)
{
- struct si470x_device *radio = video_drvdata(file);
-
- if (v4l2_fh_is_singular_file(file)) {
- /* shutdown interrupt handler */
- if (radio->int_in_running) {
- radio->int_in_running = 0;
- if (radio->int_in_urb)
- usb_kill_urb(radio->int_in_urb);
- }
-
- /* cancel read processes */
- wake_up_interruptible(&radio->read_queue);
-
- /* stop radio */
- si470x_stop(radio);
- usb_autopm_put_interface(radio->intf);
- }
return v4l2_fh_release(file);
}
-static void si470x_usb_release(struct video_device *vdev)
+static void si470x_usb_release(struct v4l2_device *v4l2_dev)
{
- struct si470x_device *radio = video_get_drvdata(vdev);
+ struct si470x_device *radio =
+ container_of(v4l2_dev, struct si470x_device, v4l2_dev);
usb_free_urb(radio->int_in_urb);
v4l2_ctrl_handler_free(&radio->hdl);
}
+static int si470x_start_usb(struct si470x_device *radio)
+{
+ int retval;
+
+ /* start radio */
+ retval = si470x_start(radio);
+ if (retval < 0)
+ return retval;
+
+ v4l2_ctrl_handler_setup(&radio->hdl);
+
+ /* initialize interrupt urb */
+ usb_fill_int_urb(radio->int_in_urb, radio->usbdev,
+ usb_rcvintpipe(radio->usbdev,
+ radio->int_in_endpoint->bEndpointAddress),
+ radio->int_in_buffer,
+ le16_to_cpu(radio->int_in_endpoint->wMaxPacketSize),
+ si470x_int_in_callback,
+ radio,
+ radio->int_in_endpoint->bInterval);
+
+ radio->int_in_running = 1;
+ mb();
+
+ retval = usb_submit_urb(radio->int_in_urb, GFP_KERNEL);
+ if (retval) {
+ dev_info(&radio->intf->dev,
+ "submitting int urb failed (%d)\n", retval);
+ radio->int_in_running = 0;
+ }
+ return retval;
+}
/**************************************************************************
* USB Interface
goto err_intbuffer;
}
+ radio->v4l2_dev.release = si470x_usb_release;
retval = v4l2_device_register(&intf->dev, &radio->v4l2_dev);
if (retval < 0) {
dev_err(&intf->dev, "couldn't register v4l2_device\n");
radio->videodev.ctrl_handler = &radio->hdl;
radio->videodev.lock = &radio->lock;
radio->videodev.v4l2_dev = &radio->v4l2_dev;
- radio->videodev.release = si470x_usb_release;
+ radio->videodev.release = video_device_release_empty;
set_bit(V4L2_FL_USE_FH_PRIO, &radio->videodev.flags);
video_set_drvdata(&radio->videodev, radio);
init_waitqueue_head(&radio->read_queue);
usb_set_intfdata(intf, radio);
+ /* start radio */
+ retval = si470x_start_usb(radio);
+ if (retval < 0)
+ goto err_all;
+
/* register video device */
retval = video_register_device(&radio->videodev, VFL_TYPE_RADIO,
radio_nr);
if (retval) {
- dev_warn(&intf->dev, "Could not register video device\n");
+ dev_err(&intf->dev, "Could not register video device\n");
goto err_all;
}
static int si470x_usb_driver_suspend(struct usb_interface *intf,
pm_message_t message)
{
+ struct si470x_device *radio = usb_get_intfdata(intf);
+
dev_info(&intf->dev, "suspending now...\n");
+ /* shutdown interrupt handler */
+ if (radio->int_in_running) {
+ radio->int_in_running = 0;
+ if (radio->int_in_urb)
+ usb_kill_urb(radio->int_in_urb);
+ }
+
+ /* cancel read processes */
+ wake_up_interruptible(&radio->read_queue);
+
+ /* stop radio */
+ si470x_stop(radio);
return 0;
}
*/
static int si470x_usb_driver_resume(struct usb_interface *intf)
{
+ struct si470x_device *radio = usb_get_intfdata(intf);
+
dev_info(&intf->dev, "resuming now...\n");
- return 0;
+ /* start radio */
+ return si470x_start_usb(radio);
}
video_unregister_device(&radio->videodev);
usb_set_intfdata(intf, NULL);
mutex_unlock(&radio->lock);
+ v4l2_device_put(&radio->v4l2_dev);
}
/*
* si470x_usb_driver - usb driver interface
+ *
+ * A note on suspend/resume: this driver had only empty suspend/resume
+ * functions, and when I tried to test suspend/resume it always disconnected
+ * instead of resuming (using my ADS InstantFM stick). So I've decided to
+ * remove these callbacks until someone else with better hardware can
+ * implement and test this.
*/
static struct usb_driver si470x_usb_driver = {
.name = DRIVER_NAME,
.disconnect = si470x_usb_driver_disconnect,
.suspend = si470x_usb_driver_suspend,
.resume = si470x_usb_driver_resume,
+ .reset_resume = si470x_usb_driver_resume,
.id_table = si470x_usb_driver_id_table,
- .supports_autosuspend = 1,
};
module_usb_driver(si470x_usb_driver);
projects / firefly-linux-kernel-4.4.55.git / blobdiff