diff options
Diffstat (limited to 'drivers/media/video/cpia2/cpia2_usb.c')
| -rw-r--r-- | drivers/media/video/cpia2/cpia2_usb.c | 78 |
1 files changed, 59 insertions, 19 deletions
diff --git a/drivers/media/video/cpia2/cpia2_usb.c b/drivers/media/video/cpia2/cpia2_usb.c index 59c797c15277..95b5d6e7cdc4 100644 --- a/drivers/media/video/cpia2/cpia2_usb.c +++ b/drivers/media/video/cpia2/cpia2_usb.c @@ -54,6 +54,8 @@ static void cpia2_usb_complete(struct urb *urb); static int cpia2_usb_probe(struct usb_interface *intf, const struct usb_device_id *id); static void cpia2_usb_disconnect(struct usb_interface *intf); +static int cpia2_usb_suspend(struct usb_interface *intf, pm_message_t message); +static int cpia2_usb_resume(struct usb_interface *intf); static void free_sbufs(struct camera_data *cam); static void add_APPn(struct camera_data *cam); @@ -74,6 +76,9 @@ static struct usb_driver cpia2_driver = { .name = "cpia2", .probe = cpia2_usb_probe, .disconnect = cpia2_usb_disconnect, + .suspend = cpia2_usb_suspend, + .resume = cpia2_usb_resume, + .reset_resume = cpia2_usb_resume, .id_table = cpia2_id_table }; @@ -218,10 +223,9 @@ static void cpia2_usb_complete(struct urb *urb) return; } - if (!cam->streaming || !cam->present || cam->open_count == 0) { - LOG("Will now stop the streaming: streaming = %d, " - "present=%d, open_count=%d\n", - cam->streaming, cam->present, cam->open_count); + if (!cam->streaming || !video_is_registered(&cam->vdev)) { + LOG("Will now stop the streaming: streaming = %d, present=%d\n", + cam->streaming, video_is_registered(&cam->vdev)); return; } @@ -392,7 +396,7 @@ static int configure_transfer_mode(struct camera_data *cam, unsigned int alt) struct cpia2_command cmd; unsigned char reg; - if(!cam->present) + if (!video_is_registered(&cam->vdev)) return -ENODEV; /*** @@ -752,8 +756,8 @@ int cpia2_usb_stream_pause(struct camera_data *cam) { int ret = 0; if(cam->streaming) { - ret = set_alternate(cam, USBIF_CMDONLY); free_sbufs(cam); + ret = set_alternate(cam, USBIF_CMDONLY); } return ret; } @@ -770,6 +774,10 @@ int cpia2_usb_stream_resume(struct camera_data *cam) cam->first_image_seen = 0; ret = set_alternate(cam, cam->params.camera_state.stream_mode); if(ret == 0) { + /* for some reason the user effects need to be set + again when starting streaming. */ + cpia2_do_command(cam, CPIA2_CMD_SET_USER_EFFECTS, TRANSFER_WRITE, + cam->params.vp_params.user_effects); ret = submit_urbs(cam); } } @@ -784,6 +792,7 @@ int cpia2_usb_stream_resume(struct camera_data *cam) int cpia2_usb_stream_stop(struct camera_data *cam) { int ret; + ret = cpia2_usb_stream_pause(cam); cam->streaming = 0; configure_transfer_mode(cam, 0); @@ -812,7 +821,8 @@ static int cpia2_usb_probe(struct usb_interface *intf, /* If we get to this point, we found a CPiA2 camera */ LOG("CPiA2 USB camera found\n"); - if((cam = cpia2_init_camera_struct()) == NULL) + cam = cpia2_init_camera_struct(intf); + if (cam == NULL) return -ENOMEM; cam->dev = udev; @@ -825,16 +835,9 @@ static int cpia2_usb_probe(struct usb_interface *intf, return ret; } - if ((ret = cpia2_register_camera(cam)) < 0) { - ERR("%s: Failed to register cpia2 camera (ret = %d)\n", __func__, ret); - kfree(cam); - return ret; - } - if((ret = cpia2_init_camera(cam)) < 0) { ERR("%s: failed to initialize cpia2 camera (ret = %d)\n", __func__, ret); - cpia2_unregister_camera(cam); kfree(cam); return ret; } @@ -853,6 +856,13 @@ static int cpia2_usb_probe(struct usb_interface *intf, usb_set_intfdata(intf, cam); + ret = cpia2_register_camera(cam); + if (ret < 0) { + ERR("%s: Failed to register cpia2 camera (ret = %d)\n", __func__, ret); + kfree(cam); + return ret; + } + return 0; } @@ -865,13 +875,16 @@ static void cpia2_usb_disconnect(struct usb_interface *intf) { struct camera_data *cam = usb_get_intfdata(intf); usb_set_intfdata(intf, NULL); - cam->present = 0; DBG("Stopping stream\n"); cpia2_usb_stream_stop(cam); + mutex_lock(&cam->v4l2_lock); DBG("Unregistering camera\n"); cpia2_unregister_camera(cam); + v4l2_device_disconnect(&cam->v4l2_dev); + mutex_unlock(&cam->v4l2_lock); + v4l2_device_put(&cam->v4l2_dev); if(cam->buffers) { DBG("Wakeup waiting processes\n"); @@ -884,14 +897,41 @@ static void cpia2_usb_disconnect(struct usb_interface *intf) DBG("Releasing interface\n"); usb_driver_release_interface(&cpia2_driver, intf); - if (cam->open_count == 0) { - DBG("Freeing camera structure\n"); - kfree(cam); + LOG("CPiA2 camera disconnected.\n"); +} + +static int cpia2_usb_suspend(struct usb_interface *intf, pm_message_t message) +{ + struct camera_data *cam = usb_get_intfdata(intf); + + mutex_lock(&cam->v4l2_lock); + if (cam->streaming) { + cpia2_usb_stream_stop(cam); + cam->streaming = 1; } + mutex_unlock(&cam->v4l2_lock); - LOG("CPiA2 camera disconnected.\n"); + dev_info(&intf->dev, "going into suspend..\n"); + return 0; } +/* Resume device - start device. */ +static int cpia2_usb_resume(struct usb_interface *intf) +{ + struct camera_data *cam = usb_get_intfdata(intf); + + mutex_lock(&cam->v4l2_lock); + v4l2_ctrl_handler_setup(&cam->hdl); + if (cam->streaming) { + cam->streaming = 0; + cpia2_usb_stream_start(cam, + cam->params.camera_state.stream_mode); + } + mutex_unlock(&cam->v4l2_lock); + + dev_info(&intf->dev, "coming out of suspend..\n"); + return 0; +} /****************************************************************************** * |