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Subject: [media] zr364xx: add suspend/resume support Author: Hans Verkuil <[email protected]> Date: Fri Jun 8 06:43:59 2012 -0300 And fix initial control setup. Signed-off-by: Hans Verkuil <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]> drivers/media/video/zr364xx.c | 69 +++++++++++++++++++++++++++++++++------- 1 files changed, 57 insertions(+), 12 deletions(-) --- http://git.linuxtv.org/media_tree.git?a=commitdiff;h=587a5765b2a6ee48bad72e0fdc56a5b496d23af3 diff --git a/drivers/media/video/zr364xx.c b/drivers/media/video/zr364xx.c index 333f696..9afab35 100644 --- a/drivers/media/video/zr364xx.c +++ b/drivers/media/video/zr364xx.c @@ -196,6 +196,7 @@ struct zr364xx_camera { const struct zr364xx_fmt *fmt; struct videobuf_queue vb_vidq; + bool was_streaming; }; /* buffer for one video frame */ @@ -1119,20 +1120,10 @@ static inline int zr364xx_stop_acquire(struct zr364xx_camera *cam) return 0; } -static int zr364xx_vidioc_streamon(struct file *file, void *priv, - enum v4l2_buf_type type) +static int zr364xx_prepare(struct zr364xx_camera *cam) { - struct zr364xx_camera *cam = video_drvdata(file); - int i, j; int res; - - DBG("%s\n", __func__); - - if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - - if (cam->owner && cam->owner != priv) - return -EBUSY; + int i, j; for (i = 0; init[cam->method][i].size != -1; i++) { res = send_control_msg(cam->udev, 1, init[cam->method][i].value, @@ -1153,6 +1144,27 @@ static int zr364xx_vidioc_streamon(struct file *file, void *priv, cam->buffer.frame[j].ulState = ZR364XX_READ_IDLE; cam->buffer.frame[j].cur_size = 0; } + v4l2_ctrl_handler_setup(&cam->ctrl_handler); + return 0; +} + +static int zr364xx_vidioc_streamon(struct file *file, void *priv, + enum v4l2_buf_type type) +{ + struct zr364xx_camera *cam = video_drvdata(file); + int res; + + DBG("%s\n", __func__); + + if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + + if (cam->owner && cam->owner != priv) + return -EBUSY; + + res = zr364xx_prepare(cam); + if (res) + return res; res = videobuf_streamon(&cam->vb_vidq); if (res == 0) { zr364xx_start_acquire(cam); @@ -1578,6 +1590,34 @@ static void zr364xx_disconnect(struct usb_interface *intf) } +#ifdef CONFIG_PM +static int zr364xx_suspend(struct usb_interface *intf, pm_message_t message) +{ + struct zr364xx_camera *cam = usb_get_intfdata(intf); + + cam->was_streaming = cam->b_acquire; + if (!cam->was_streaming) + return 0; + zr364xx_stop_acquire(cam); + zr364xx_stop_readpipe(cam); + return 0; +} + +static int zr364xx_resume(struct usb_interface *intf) +{ + struct zr364xx_camera *cam = usb_get_intfdata(intf); + int res; + + if (!cam->was_streaming) + return 0; + + zr364xx_start_readpipe(cam); + res = zr364xx_prepare(cam); + if (!res) + zr364xx_start_acquire(cam); + return res; +} +#endif /**********************/ /* Module integration */ @@ -1587,6 +1627,11 @@ static struct usb_driver zr364xx_driver = { .name = "zr364xx", .probe = zr364xx_probe, .disconnect = zr364xx_disconnect, +#ifdef CONFIG_PM + .suspend = zr364xx_suspend, + .resume = zr364xx_resume, + .reset_resume = zr364xx_resume, +#endif .id_table = device_table }; _______________________________________________ linuxtv-commits mailing list [email protected] http://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits
