[media] c-qcam: convert to the latest frameworks

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 65 insertions, 72 deletions

diff --git a/drivers/media/video/c-qcam.c b/drivers/media/video/c-qcam.c
index 73c65c2bf178..ec51e1f12e82 100644
--- a/drivers/media/video/c-qcam.c
+++ b/drivers/media/video/c-qcam.c
@@ -40,10 +40,14 @@
 #include <media/v4l2-device.h>
 #include <media/v4l2-common.h>
 #include <media/v4l2-ioctl.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-event.h>
 
 struct qcam {
         struct v4l2_device v4l2_dev;
         struct video_device vdev;
+        struct v4l2_ctrl_handler hdl;
         struct pardevice *pdev;
         struct parport *pport;
         int width, height;
@@ -515,7 +519,8 @@ static int qcam_querycap(struct file *file, void  *priv,
         strlcpy(vcap->driver, qcam->v4l2_dev.name, sizeof(vcap->driver));
         strlcpy(vcap->card, "Color Quickcam", sizeof(vcap->card));
         strlcpy(vcap->bus_info, "parport", sizeof(vcap->bus_info));
-        vcap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE;
+        vcap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE;
+        vcap->capabilities = vcap->device_caps | V4L2_CAP_DEVICE_CAPS;
         return 0;
 }
 
@@ -543,73 +548,6 @@ static int qcam_s_input(struct file *file, void *fh, unsigned int inp)
         return (inp > 0) ? -EINVAL : 0;
 }
 
-static int qcam_queryctrl(struct file *file, void *priv,
-                                        struct v4l2_queryctrl *qc)
-{
-        switch (qc->id) {
-        case V4L2_CID_BRIGHTNESS:
-                return v4l2_ctrl_query_fill(qc, 0, 255, 1, 240);
-        case V4L2_CID_CONTRAST:
-                return v4l2_ctrl_query_fill(qc, 0, 255, 1, 192);
-        case V4L2_CID_GAMMA:
-                return v4l2_ctrl_query_fill(qc, 0, 255, 1, 128);
-        }
-        return -EINVAL;
-}
-
-static int qcam_g_ctrl(struct file *file, void *priv,
-                                        struct v4l2_control *ctrl)
-{
-        struct qcam *qcam = video_drvdata(file);
-        int ret = 0;
-
-        switch (ctrl->id) {
-        case V4L2_CID_BRIGHTNESS:
-                ctrl->value = qcam->brightness;
-                break;
-        case V4L2_CID_CONTRAST:
-                ctrl->value = qcam->contrast;
-                break;
-        case V4L2_CID_GAMMA:
-                ctrl->value = qcam->whitebal;
-                break;
-        default:
-                ret = -EINVAL;
-                break;
-        }
-        return ret;
-}
-
-static int qcam_s_ctrl(struct file *file, void *priv,
-                                        struct v4l2_control *ctrl)
-{
-        struct qcam *qcam = video_drvdata(file);
-        int ret = 0;
-
-        mutex_lock(&qcam->lock);
-        switch (ctrl->id) {
-        case V4L2_CID_BRIGHTNESS:
-                qcam->brightness = ctrl->value;
-                break;
-        case V4L2_CID_CONTRAST:
-                qcam->contrast = ctrl->value;
-                break;
-        case V4L2_CID_GAMMA:
-                qcam->whitebal = ctrl->value;
-                break;
-        default:
-                ret = -EINVAL;
-                break;
-        }
-        if (ret == 0) {
-                parport_claim_or_block(qcam->pdev);
-                qc_setup(qcam);
-                parport_release(qcam->pdev);
-        }
-        mutex_unlock(&qcam->lock);
-        return ret;
-}
-
 static int qcam_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
 {
         struct qcam *qcam = video_drvdata(file);
@@ -713,8 +651,41 @@ static ssize_t qcam_read(struct file *file, char __user *buf,
         return len;
 }
 
+static int qcam_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+        struct qcam *qcam =
+                container_of(ctrl->handler, struct qcam, hdl);
+        int ret = 0;
+
+        mutex_lock(&qcam->lock);
+        switch (ctrl->id) {
+        case V4L2_CID_BRIGHTNESS:
+                qcam->brightness = ctrl->val;
+                break;
+        case V4L2_CID_CONTRAST:
+                qcam->contrast = ctrl->val;
+                break;
+        case V4L2_CID_GAMMA:
+                qcam->whitebal = ctrl->val;
+                break;
+        default:
+                ret = -EINVAL;
+                break;
+        }
+        if (ret == 0) {
+                parport_claim_or_block(qcam->pdev);
+                qc_setup(qcam);
+                parport_release(qcam->pdev);
+        }
+        mutex_unlock(&qcam->lock);
+        return ret;
+}
+
 static const struct v4l2_file_operations qcam_fops = {
         .owner          = THIS_MODULE,
+        .open           = v4l2_fh_open,
+        .release        = v4l2_fh_release,
+        .poll           = v4l2_ctrl_poll,
         .unlocked_ioctl = video_ioctl2,
         .read           = qcam_read,
 };
@@ -724,13 +695,17 @@ static const struct v4l2_ioctl_ops qcam_ioctl_ops = {
         .vidioc_g_input                     = qcam_g_input,
         .vidioc_s_input                     = qcam_s_input,
         .vidioc_enum_input                  = qcam_enum_input,
-        .vidioc_queryctrl                   = qcam_queryctrl,
-        .vidioc_g_ctrl                      = qcam_g_ctrl,
-        .vidioc_s_ctrl                      = qcam_s_ctrl,
-        .vidioc_enum_fmt_vid_cap            = qcam_enum_fmt_vid_cap,
+        .vidioc_enum_fmt_vid_cap            = qcam_enum_fmt_vid_cap,
         .vidioc_g_fmt_vid_cap               = qcam_g_fmt_vid_cap,
         .vidioc_s_fmt_vid_cap               = qcam_s_fmt_vid_cap,
         .vidioc_try_fmt_vid_cap             = qcam_try_fmt_vid_cap,
+        .vidioc_log_status                  = v4l2_ctrl_log_status,
+        .vidioc_subscribe_event             = v4l2_ctrl_subscribe_event,
+        .vidioc_unsubscribe_event           = v4l2_event_unsubscribe,
+};
+
+static const struct v4l2_ctrl_ops qcam_ctrl_ops = {
+        .s_ctrl = qcam_s_ctrl,
 };
 
 /* Initialize the QuickCam driver control structure. */
@@ -753,6 +728,20 @@ static struct qcam *qcam_init(struct parport *port)
                 return NULL;
         }
 
+        v4l2_ctrl_handler_init(&qcam->hdl, 3);
+        v4l2_ctrl_new_std(&qcam->hdl, &qcam_ctrl_ops,
+                          V4L2_CID_BRIGHTNESS, 0, 255, 1, 240);
+        v4l2_ctrl_new_std(&qcam->hdl, &qcam_ctrl_ops,
+                          V4L2_CID_CONTRAST, 0, 255, 1, 192);
+        v4l2_ctrl_new_std(&qcam->hdl, &qcam_ctrl_ops,
+                          V4L2_CID_GAMMA, 0, 255, 1, 128);
+        if (qcam->hdl.error) {
+                v4l2_err(v4l2_dev, "couldn't register controls\n");
+                v4l2_ctrl_handler_free(&qcam->hdl);
+                kfree(qcam);
+                return NULL;
+        }
+
         qcam->pport = port;
         qcam->pdev = parport_register_device(port, "c-qcam", NULL, NULL,
                                           NULL, 0, NULL);
@@ -761,6 +750,7 @@ static struct qcam *qcam_init(struct parport *port)
 
         if (qcam->pdev == NULL) {
                 v4l2_err(v4l2_dev, "couldn't register for %s.\n", port->name);
+                v4l2_ctrl_handler_free(&qcam->hdl);
                 kfree(qcam);
                 return NULL;
         }
@@ -770,6 +760,8 @@ static struct qcam *qcam_init(struct parport *port)
         qcam->vdev.fops = &qcam_fops;
         qcam->vdev.ioctl_ops = &qcam_ioctl_ops;
         qcam->vdev.release = video_device_release_empty;
+        qcam->vdev.ctrl_handler = &qcam->hdl;
+        set_bit(V4L2_FL_USE_FH_PRIO, &qcam->vdev.flags);
         video_set_drvdata(&qcam->vdev, qcam);
 
         mutex_init(&qcam->lock);
@@ -844,6 +836,7 @@ static int init_cqcam(struct parport *port)
 static void close_cqcam(struct qcam *qcam)
 {
         video_unregister_device(&qcam->vdev);
+        v4l2_ctrl_handler_free(&qcam->hdl);
         parport_unregister_device(qcam->pdev);
         kfree(qcam);
 }