-/**************************************************************************
- * General Driver Functions - DISCONNECT_CHECK
- **************************************************************************/
-
-/*
- * si470x_disconnect_check - check whether radio disconnects
- */
-int si470x_disconnect_check(struct si470x_device *radio)
-{
- if (radio->disconnected)
- return -EIO;
- else
- return 0;
-}
-
-
-
/**************************************************************************
* RDS Driver Functions
**************************************************************************/
}
}
- /* safety checks */
- if (radio->disconnected)
- return;
if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0)
goto resubmit;
}
-
-/**************************************************************************
- * File Operations Interface
- **************************************************************************/
-
-/*
- * si470x_fops_open - file open
- */
int si470x_fops_open(struct file *file)
{
- struct si470x_device *radio = video_drvdata(file);
- int retval;
-
- mutex_lock(&radio->lock);
- radio->users++;
-
- retval = usb_autopm_get_interface(radio->intf);
- if (retval < 0) {
- radio->users--;
- retval = -EIO;
- goto done;
- }
-
- if (radio->users == 1) {
- /* 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:
- mutex_unlock(&radio->lock);
- 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);
- int retval = 0;
-
- /* safety check */
- if (!radio) {
- retval = -ENODEV;
- goto done;
- }
-
- mutex_lock(&radio->lock);
- radio->users--;
- if (radio->users == 0) {
- /* 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);
- }
-
- if (radio->disconnected) {
- video_unregister_device(radio->videodev);
- kfree(radio->int_in_buffer);
- kfree(radio->buffer);
- mutex_unlock(&radio->lock);
- kfree(radio);
- goto done;
- }
+ return v4l2_fh_release(file);
+}
- /* cancel read processes */
- wake_up_interruptible(&radio->read_queue);
+static void si470x_usb_release(struct v4l2_device *v4l2_dev)
+{
+ struct si470x_device *radio =
+ container_of(v4l2_dev, struct si470x_device, v4l2_dev);
- /* stop radio */
- retval = si470x_stop(radio);
- usb_autopm_put_interface(radio->intf);
- }
- mutex_unlock(&radio->lock);
-done:
- return retval;
+ usb_free_urb(radio->int_in_urb);
+ v4l2_ctrl_handler_free(&radio->hdl);
+ v4l2_device_unregister(&radio->v4l2_dev);
+ kfree(radio->int_in_buffer);
+ kfree(radio->buffer);
+ kfree(radio);
}
-
/**************************************************************************
* Video4Linux Interface
**************************************************************************/
strlcpy(capability->card, DRIVER_CARD, sizeof(capability->card));
usb_make_path(radio->usbdev, capability->bus_info,
sizeof(capability->bus_info));
- capability->capabilities = V4L2_CAP_HW_FREQ_SEEK |
+ capability->device_caps = V4L2_CAP_HW_FREQ_SEEK |
V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_RDS_CAPTURE;
-
+ capability->capabilities = capability->device_caps | V4L2_CAP_DEVICE_CAPS;
return 0;
}
+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
retval = -ENOMEM;
goto err_initial;
}
- radio->users = 0;
- radio->disconnected = 0;
radio->usbdev = interface_to_usbdev(intf);
radio->intf = intf;
mutex_init(&radio->lock);
goto err_intbuffer;
}
- /* video device allocation and initialization */
- radio->videodev = video_device_alloc();
- if (!radio->videodev) {
- retval = -ENOMEM;
+ 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");
goto err_urb;
}
- memcpy(radio->videodev, &si470x_viddev_template,
- sizeof(si470x_viddev_template));
- video_set_drvdata(radio->videodev, radio);
+
+ v4l2_ctrl_handler_init(&radio->hdl, 2);
+ v4l2_ctrl_new_std(&radio->hdl, &si470x_ctrl_ops,
+ V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
+ v4l2_ctrl_new_std(&radio->hdl, &si470x_ctrl_ops,
+ V4L2_CID_AUDIO_VOLUME, 0, 15, 1, 15);
+ if (radio->hdl.error) {
+ retval = radio->hdl.error;
+ dev_err(&intf->dev, "couldn't register control\n");
+ goto err_dev;
+ }
+ radio->videodev = si470x_viddev_template;
+ radio->videodev.ctrl_handler = &radio->hdl;
+ radio->videodev.lock = &radio->lock;
+ radio->videodev.v4l2_dev = &radio->v4l2_dev;
+ radio->videodev.release = video_device_release_empty;
+ set_bit(V4L2_FL_USE_FH_PRIO, &radio->videodev.flags);
+ video_set_drvdata(&radio->videodev, radio);
/* get device and chip versions */
if (si470x_get_all_registers(radio) < 0) {
retval = -EIO;
- goto err_video;
+ goto err_ctrl;
}
dev_info(&intf->dev, "DeviceID=0x%4.4hx ChipID=0x%4.4hx\n",
radio->registers[DEVICEID], radio->registers[CHIPID]);
/* get software and hardware versions */
if (si470x_get_scratch_page_versions(radio) < 0) {
retval = -EIO;
- goto err_video;
+ goto err_ctrl;
}
dev_info(&intf->dev, "software version %d, hardware version %d\n",
radio->software_version, radio->hardware_version);
radio->buffer = kmalloc(radio->buf_size, GFP_KERNEL);
if (!radio->buffer) {
retval = -EIO;
- goto err_video;
+ goto err_ctrl;
}
/* rds buffer configuration */
radio->wr_index = 0;
radio->rd_index = 0;
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,
+ 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;
}
- usb_set_intfdata(intf, radio);
return 0;
err_all:
kfree(radio->buffer);
-err_video:
- video_device_release(radio->videodev);
+err_ctrl:
+ v4l2_ctrl_handler_free(&radio->hdl);
+err_dev:
+ v4l2_device_unregister(&radio->v4l2_dev);
err_urb:
usb_free_urb(radio->int_in_urb);
err_intbuffer:
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);
}
struct si470x_device *radio = usb_get_intfdata(intf);
mutex_lock(&radio->lock);
- radio->disconnected = 1;
+ v4l2_device_disconnect(&radio->v4l2_dev);
+ video_unregister_device(&radio->videodev);
usb_set_intfdata(intf, NULL);
- if (radio->users == 0) {
- /* set led to disconnect state */
- si470x_set_led_state(radio, BLINK_ORANGE_LED);
-
- /* Free data structures. */
- usb_free_urb(radio->int_in_urb);
-
- kfree(radio->int_in_buffer);
- video_unregister_device(radio->videodev);
- kfree(radio->buffer);
- mutex_unlock(&radio->lock);
- kfree(radio);
- } else {
- mutex_unlock(&radio->lock);
- }
+ 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