From dc0fb28675e7ef7ac12a5532500b2f89e41f2174 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Mon, 4 Feb 2013 08:53:11 -0300 Subject: [PATCH] [media] stk-webcam: convert to the control framework Signed-off-by: Hans Verkuil Tested-by: Arvydas Sidorenko Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/stkwebcam/stk-webcam.c | 119 ++++++----------------- drivers/media/usb/stkwebcam/stk-webcam.h | 3 +- 2 files changed, 33 insertions(+), 89 deletions(-) diff --git a/drivers/media/usb/stkwebcam/stk-webcam.c b/drivers/media/usb/stkwebcam/stk-webcam.c index eaf152c51ae2..f1cf9060ce71 100644 --- a/drivers/media/usb/stkwebcam/stk-webcam.c +++ b/drivers/media/usb/stkwebcam/stk-webcam.c @@ -806,99 +806,25 @@ static int stk_vidioc_s_input(struct file *filp, void *priv, unsigned int i) return 0; } -/* List of all V4Lv2 controls supported by the driver */ -static struct v4l2_queryctrl stk_controls[] = { - { - .id = V4L2_CID_BRIGHTNESS, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "Brightness", - .minimum = 0, - .maximum = 0xffff, - .step = 0x0100, - .default_value = 0x6000, - }, - { - .id = V4L2_CID_HFLIP, - .type = V4L2_CTRL_TYPE_BOOLEAN, - .name = "Horizontal Flip", - .minimum = 0, - .maximum = 1, - .step = 1, - .default_value = 1, - }, - { - .id = V4L2_CID_VFLIP, - .type = V4L2_CTRL_TYPE_BOOLEAN, - .name = "Vertical Flip", - .minimum = 0, - .maximum = 1, - .step = 1, - .default_value = 1, - }, -}; - -static int stk_vidioc_queryctrl(struct file *filp, - void *priv, struct v4l2_queryctrl *c) +static int stk_s_ctrl(struct v4l2_ctrl *ctrl) { - int i; - int nbr; - nbr = ARRAY_SIZE(stk_controls); - - for (i = 0; i < nbr; i++) { - if (stk_controls[i].id == c->id) { - memcpy(c, &stk_controls[i], - sizeof(struct v4l2_queryctrl)); - return 0; - } - } - return -EINVAL; -} - -static int stk_vidioc_g_ctrl(struct file *filp, - void *priv, struct v4l2_control *c) -{ - struct stk_camera *dev = priv; - switch (c->id) { - case V4L2_CID_BRIGHTNESS: - c->value = dev->vsettings.brightness; - break; - case V4L2_CID_HFLIP: - if (dmi_check_system(stk_upside_down_dmi_table)) - c->value = !dev->vsettings.hflip; - else - c->value = dev->vsettings.hflip; - break; - case V4L2_CID_VFLIP: - if (dmi_check_system(stk_upside_down_dmi_table)) - c->value = !dev->vsettings.vflip; - else - c->value = dev->vsettings.vflip; - break; - default: - return -EINVAL; - } - return 0; -} + struct stk_camera *dev = + container_of(ctrl->handler, struct stk_camera, hdl); -static int stk_vidioc_s_ctrl(struct file *filp, - void *priv, struct v4l2_control *c) -{ - struct stk_camera *dev = priv; - switch (c->id) { + switch (ctrl->id) { case V4L2_CID_BRIGHTNESS: - dev->vsettings.brightness = c->value; - return stk_sensor_set_brightness(dev, c->value >> 8); + return stk_sensor_set_brightness(dev, ctrl->val); case V4L2_CID_HFLIP: if (dmi_check_system(stk_upside_down_dmi_table)) - dev->vsettings.hflip = !c->value; + dev->vsettings.hflip = !ctrl->val; else - dev->vsettings.hflip = c->value; + dev->vsettings.hflip = ctrl->val; return 0; case V4L2_CID_VFLIP: if (dmi_check_system(stk_upside_down_dmi_table)) - dev->vsettings.vflip = !c->value; + dev->vsettings.vflip = !ctrl->val; else - dev->vsettings.vflip = c->value; + dev->vsettings.vflip = ctrl->val; return 0; default: return -EINVAL; @@ -1238,6 +1164,10 @@ static int stk_vidioc_enum_framesizes(struct file *filp, } } +static const struct v4l2_ctrl_ops stk_ctrl_ops = { + .s_ctrl = stk_s_ctrl, +}; + static struct v4l2_file_operations v4l_stk_fops = { .owner = THIS_MODULE, .open = v4l_stk_open, @@ -1263,9 +1193,6 @@ static const struct v4l2_ioctl_ops v4l_stk_ioctl_ops = { .vidioc_dqbuf = stk_vidioc_dqbuf, .vidioc_streamon = stk_vidioc_streamon, .vidioc_streamoff = stk_vidioc_streamoff, - .vidioc_queryctrl = stk_vidioc_queryctrl, - .vidioc_g_ctrl = stk_vidioc_g_ctrl, - .vidioc_s_ctrl = stk_vidioc_s_ctrl, .vidioc_g_parm = stk_vidioc_g_parm, .vidioc_enum_framesizes = stk_vidioc_enum_framesizes, }; @@ -1310,8 +1237,9 @@ static int stk_register_video_device(struct stk_camera *dev) static int stk_camera_probe(struct usb_interface *interface, const struct usb_device_id *id) { - int i; + struct v4l2_ctrl_handler *hdl; int err = 0; + int i; struct stk_camera *dev = NULL; struct usb_device *udev = interface_to_usbdev(interface); @@ -1329,6 +1257,20 @@ static int stk_camera_probe(struct usb_interface *interface, kfree(dev); return err; } + hdl = &dev->hdl; + v4l2_ctrl_handler_init(hdl, 3); + v4l2_ctrl_new_std(hdl, &stk_ctrl_ops, + V4L2_CID_BRIGHTNESS, 0, 0xff, 0x1, 0x60); + v4l2_ctrl_new_std(hdl, &stk_ctrl_ops, + V4L2_CID_HFLIP, 0, 1, 1, 1); + v4l2_ctrl_new_std(hdl, &stk_ctrl_ops, + V4L2_CID_VFLIP, 0, 1, 1, 1); + if (hdl->error) { + err = hdl->error; + dev_err(&udev->dev, "couldn't register control\n"); + goto error; + } + dev->v4l2_dev.ctrl_handler = hdl; spin_lock_init(&dev->spinlock); init_waitqueue_head(&dev->wait_frame); @@ -1372,7 +1314,6 @@ static int stk_camera_probe(struct usb_interface *interface, err = -ENODEV; goto error; } - dev->vsettings.brightness = 0x7fff; dev->vsettings.palette = V4L2_PIX_FMT_RGB565; dev->vsettings.mode = MODE_VGA; dev->frame_size = 640 * 480 * 2; @@ -1389,6 +1330,7 @@ static int stk_camera_probe(struct usb_interface *interface, return 0; error: + v4l2_ctrl_handler_free(hdl); v4l2_device_unregister(&dev->v4l2_dev); kfree(dev); return err; @@ -1407,6 +1349,7 @@ static void stk_camera_disconnect(struct usb_interface *interface) video_device_node_name(&dev->vdev)); video_unregister_device(&dev->vdev); + v4l2_ctrl_handler_free(&dev->hdl); v4l2_device_unregister(&dev->v4l2_dev); } diff --git a/drivers/media/usb/stkwebcam/stk-webcam.h b/drivers/media/usb/stkwebcam/stk-webcam.h index 49ebe855cba6..901f0df21bc7 100644 --- a/drivers/media/usb/stkwebcam/stk-webcam.h +++ b/drivers/media/usb/stkwebcam/stk-webcam.h @@ -24,6 +24,7 @@ #include #include +#include #include #define DRIVER_VERSION "v0.0.1" @@ -60,7 +61,6 @@ enum stk_mode {MODE_VGA, MODE_SXGA, MODE_CIF, MODE_QVGA, MODE_QCIF}; struct stk_video { enum stk_mode mode; - int brightness; __u32 palette; int hflip; int vflip; @@ -93,6 +93,7 @@ struct regval { struct stk_camera { struct v4l2_device v4l2_dev; + struct v4l2_ctrl_handler hdl; struct video_device vdev; struct usb_device *udev; struct usb_interface *interface; -- 2.20.1