From c41ee24bc44d5ce813da1fcf8a0f018a825cfa84 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Sat, 14 Feb 2009 13:43:44 -0300 Subject: [PATCH] V4L/DVB (10646): vivi: controls are per-device, not global. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/vivi.c | 40 +++++++++++++++++++++----------------- 1 file changed, 22 insertions(+), 18 deletions(-) diff --git a/drivers/media/video/vivi.c b/drivers/media/video/vivi.c index 625e9662c7ad..5b4786b07ad0 100644 --- a/drivers/media/video/vivi.c +++ b/drivers/media/video/vivi.c @@ -125,8 +125,6 @@ static struct v4l2_queryctrl vivi_qctrl[] = { } }; -static int qctl_regs[ARRAY_SIZE(vivi_qctrl)]; - #define dprintk(dev, level, fmt, arg...) \ v4l2_dbg(level, debug, &dev->v4l2_dev, fmt, ## arg) @@ -239,6 +237,9 @@ struct vivi_dev { /* Input Number */ int input; + + /* Control 'registers' */ + int qctl_regs[ARRAY_SIZE(vivi_qctrl)]; }; struct vivi_fh { @@ -1108,12 +1109,14 @@ static int vidioc_queryctrl(struct file *file, void *priv, static int vidioc_g_ctrl(struct file *file, void *priv, struct v4l2_control *ctrl) { + struct vivi_fh *fh = priv; + struct vivi_dev *dev = fh->dev; int i; for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) if (ctrl->id == vivi_qctrl[i].id) { - ctrl->value = qctl_regs[i]; - return (0); + ctrl->value = dev->qctl_regs[i]; + return 0; } return -EINVAL; @@ -1121,16 +1124,18 @@ static int vidioc_g_ctrl(struct file *file, void *priv, static int vidioc_s_ctrl(struct file *file, void *priv, struct v4l2_control *ctrl) { + struct vivi_fh *fh = priv; + struct vivi_dev *dev = fh->dev; int i; for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) if (ctrl->id == vivi_qctrl[i].id) { - if (ctrl->value < vivi_qctrl[i].minimum - || ctrl->value > vivi_qctrl[i].maximum) { - return (-ERANGE); - } - qctl_regs[i] = ctrl->value; - return (0); + if (ctrl->value < vivi_qctrl[i].minimum || + ctrl->value > vivi_qctrl[i].maximum) { + return -ERANGE; + } + dev->qctl_regs[i] = ctrl->value; + return 0; } return -EINVAL; } @@ -1143,7 +1148,6 @@ static int vivi_open(struct file *file) { struct vivi_dev *dev = video_drvdata(file); struct vivi_fh *fh = NULL; - int i; int retval = 0; mutex_lock(&dev->mutex); @@ -1177,10 +1181,6 @@ static int vivi_open(struct file *file) fh->width = 640; fh->height = 480; - /* Put all controls at a sane state */ - for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) - qctl_regs[i] = vivi_qctrl[i].default_value; - /* Resets frame counters */ dev->h = 0; dev->m = 0; @@ -1338,18 +1338,18 @@ static int vivi_release(void) return 0; } -static int __init vivi_create_instance(int i) +static int __init vivi_create_instance(int inst) { struct vivi_dev *dev; struct video_device *vfd; - int ret; + int ret, i; dev = kzalloc(sizeof(*dev), GFP_KERNEL); if (!dev) return -ENOMEM; snprintf(dev->v4l2_dev.name, sizeof(dev->v4l2_dev.name), - "%s-%03d", VIVI_MODULE_NAME, i); + "%s-%03d", VIVI_MODULE_NAME, inst); ret = v4l2_device_register(NULL, &dev->v4l2_dev); if (ret) goto free_dev; @@ -1375,6 +1375,10 @@ static int __init vivi_create_instance(int i) video_set_drvdata(vfd, dev); + /* Set all controls to their default value. */ + for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) + dev->qctl_regs[i] = vivi_qctrl[i].default_value; + /* Now that everything is fine, let's add it to device list */ list_add_tail(&dev->vivi_devlist, &vivi_devlist); -- 2.20.1