diff options
Diffstat (limited to 'drivers/media/radio/si470x/radio-si470x-usb.c')
| -rw-r--r-- | drivers/media/radio/si470x/radio-si470x-usb.c | 149 |
1 files changed, 70 insertions, 79 deletions
diff --git a/drivers/media/radio/si470x/radio-si470x-usb.c b/drivers/media/radio/si470x/radio-si470x-usb.c index f133c3dea648..e9f638761296 100644 --- a/drivers/media/radio/si470x/radio-si470x-usb.c +++ b/drivers/media/radio/si470x/radio-si470x-usb.c @@ -481,91 +481,20 @@ 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 = 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); @@ -599,6 +528,38 @@ int si470x_vidioc_querycap(struct file *file, void *priv, } +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 @@ -658,6 +619,7 @@ static int si470x_usb_driver_probe(struct usb_interface *intf, 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"); @@ -678,7 +640,7 @@ static int si470x_usb_driver_probe(struct usb_interface *intf, 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); @@ -754,11 +716,16 @@ static int si470x_usb_driver_probe(struct usb_interface *intf, 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; } @@ -786,8 +753,22 @@ err_initial: 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; } @@ -797,9 +778,12 @@ static int si470x_usb_driver_suspend(struct usb_interface *intf, */ 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); } @@ -815,11 +799,18 @@ static void si470x_usb_driver_disconnect(struct usb_interface *intf) 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, @@ -827,8 +818,8 @@ static struct usb_driver si470x_usb_driver = { .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); |