From: Hans Verkuil <hans.verk...@cisco.com>
Signed-off-by: Hans Verkuil <hans.verk...@cisco.com>
---
drivers/media/video/vivi.c | 161 ++++++++++++++++++++++++++-----------------
1 files changed, 97 insertions(+), 64 deletions(-)
diff --git a/drivers/media/video/vivi.c b/drivers/media/video/vivi.c
index 21d8f6a..93692ad 100644
--- a/drivers/media/video/vivi.c
+++ b/drivers/media/video/vivi.c
@@ -32,6 +32,7 @@
#include <media/v4l2-ioctl.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-fh.h>
+#include <media/v4l2-event.h>
#include <media/v4l2-common.h>
#define VIVI_MODULE_NAME "vivi"
@@ -157,54 +158,6 @@ struct vivi_dmaqueue {
static LIST_HEAD(vivi_devlist);
-struct vivi_dev {
- struct list_head vivi_devlist;
- struct v4l2_device v4l2_dev;
- struct v4l2_ctrl_handler ctrl_handler;
-
- /* controls */
- struct v4l2_ctrl *brightness;
- struct v4l2_ctrl *contrast;
- struct v4l2_ctrl *saturation;
- struct v4l2_ctrl *hue;
- struct v4l2_ctrl *volume;
- struct v4l2_ctrl *button;
- struct v4l2_ctrl *boolean;
- struct v4l2_ctrl *int32;
- struct v4l2_ctrl *int64;
- struct v4l2_ctrl *menu;
- struct v4l2_ctrl *string;
- struct v4l2_ctrl *bitmask;
-
- spinlock_t slock;
- struct mutex mutex;
-
- /* various device info */
- struct video_device *vfd;
-
- struct vivi_dmaqueue vidq;
-
- /* Several counters */
- unsigned ms;
- unsigned long jiffies;
- unsigned button_pressed;
-
- int mv_count; /* Controls bars movement */
-
- /* Input Number */
- int input;
-
- /* video capture */
- struct vivi_fmt *fmt;
- unsigned int width, height;
- struct vb2_queue vb_vidq;
- enum v4l2_field field;
- unsigned int field_count;
-
- u8 bars[9][3];
- u8 line[MAX_WIDTH * 4];
-};
-
/* ------------------------------------------------------------------
DMA and thread functions
------------------------------------------------------------------*/
@@ -257,6 +210,50 @@ static struct bar_std bars[] = {
#define NUM_INPUTS ARRAY_SIZE(bars)
+struct vivi_dev {
+ struct list_head vivi_devlist;
+ struct v4l2_device v4l2_dev;
+ struct v4l2_ctrl_handler ctrl_handler;
+
+ /* controls */
+ struct v4l2_ctrl *volume;
+ struct v4l2_ctrl *button;
+ struct v4l2_ctrl *boolean;
+ struct v4l2_ctrl *int32;
+ struct v4l2_ctrl *int64;
+ struct v4l2_ctrl *menu;
+ struct v4l2_ctrl *string;
+ struct v4l2_ctrl *bitmask;
+
+ spinlock_t slock;
+ struct mutex mutex;
+
+ /* various device info */
+ struct video_device *vfd;
+
+ struct vivi_dmaqueue vidq;
+
+ /* Several counters */
+ unsigned ms;
+ unsigned long jiffies;
+ unsigned button_pressed;
+
+ int mv_count; /* Controls bars movement */
+
+ /* Input Number */
+ int input;
+
+ /* video capture */
+ struct vivi_fmt *fmt;
+ unsigned int width, height;
+ struct vb2_queue vb_vidq;
+ enum v4l2_field field;
+ unsigned int field_count;
+
+ u8 bars[9][3];
+ u8 line[MAX_WIDTH * 4];
+};
+
#define TO_Y(r, g, b) \
(((16829 * r + 33039 * g + 6416 * b + 32768) >> 16) + 16)
/* RGB to V(Cr) Color transform */
@@ -451,6 +448,14 @@ static void gen_text(struct vivi_dev *dev, char *basep,
static void vivi_fillbuff(struct vivi_dev *dev, struct vivi_buffer *buf)
{
+ struct v4l2_ctrl *brightness = v4l2_ctrl_find(&dev->ctrl_handler,
+ V4L2_CID_BRIGHTNESS);
+ struct v4l2_ctrl *contrast = v4l2_ctrl_find(&dev->ctrl_handler,
+ V4L2_CID_CONTRAST);
+ struct v4l2_ctrl *saturation = v4l2_ctrl_find(&dev->ctrl_handler,
+ V4L2_CID_SATURATION);
+ struct v4l2_ctrl *hue = v4l2_ctrl_find(&dev->ctrl_handler,
+ V4L2_CID_HUE);
int wmax = dev->width;
int hmax = dev->height;
struct timeval ts;
@@ -482,10 +487,10 @@ static void vivi_fillbuff(struct vivi_dev *dev, struct
vivi_buffer *buf)
mutex_lock(&dev->ctrl_handler.lock);
snprintf(str, sizeof(str), " brightness %3d, contrast %3d, saturation
%3d, hue %d ",
- dev->brightness->cur.val,
- dev->contrast->cur.val,
- dev->saturation->cur.val,
- dev->hue->cur.val);
+ brightness->cur.val,
+ contrast->cur.val,
+ saturation->cur.val,
+ hue->cur.val);
gen_text(dev, vbuf, line++ * 16, 16, str);
snprintf(str, sizeof(str), " volume %3d ", dev->volume->cur.val);
gen_text(dev, vbuf, line++ * 16, 16, str);
@@ -977,12 +982,29 @@ static int vidioc_s_input(struct file *file, void *priv,
unsigned int i)
if (i >= NUM_INPUTS)
return -EINVAL;
+ if (i == dev->input)
+ return 0;
+
dev->input = i;
precalculate_bars(dev);
precalculate_line(dev);
return 0;
}
+static int vidioc_subscribe_event(struct v4l2_fh *fh,
+ struct v4l2_event_subscription *sub)
+{
+ int ret;
+
+ switch (sub->type) {
+ case V4L2_EVENT_CTRL:
+ return v4l2_ctrl_sub_fh(fh, sub,
+ v4l2_ctrl_handler_cnt(fh->ctrl_handler) * 2);
+ default:
+ return -EINVAL;
+ }
+}
+
/* --- controls ---------------------------------------------- */
static int vivi_s_ctrl(struct v4l2_ctrl *ctrl)
@@ -1012,10 +1034,17 @@ static unsigned int
vivi_poll(struct file *file, struct poll_table_struct *wait)
{
struct vivi_dev *dev = video_drvdata(file);
+ struct v4l2_fh *fh = file->private_data;
struct vb2_queue *q = &dev->vb_vidq;
+ unsigned int res;
dprintk(dev, 1, "%s\n", __func__);
- return vb2_poll(q, file, wait);
+ res = vb2_poll(q, file, wait);
+ if (v4l2_event_pending(fh))
+ res |= POLLPRI;
+ else
+ poll_wait(file, &fh->events->wait, wait);
+ return res;
}
static int vivi_close(struct file *file)
@@ -1132,7 +1161,7 @@ static const struct v4l2_ctrl_config vivi_ctrl_bitmask = {
static const struct v4l2_file_operations vivi_fops = {
.owner = THIS_MODULE,
- .open = v4l2_fh_open,
+ .open = v4l2_fh_open,
.release = vivi_close,
.read = vivi_read,
.poll = vivi_poll,
@@ -1156,6 +1185,8 @@ static const struct v4l2_ioctl_ops vivi_ioctl_ops = {
.vidioc_s_input = vidioc_s_input,
.vidioc_streamon = vidioc_streamon,
.vidioc_streamoff = vidioc_streamoff,
+ .vidioc_subscribe_event = vidioc_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
static struct video_device vivi_template = {
@@ -1200,6 +1231,7 @@ static int __init vivi_create_instance(int inst)
struct v4l2_ctrl_handler *hdl;
struct vb2_queue *q;
int ret;
+ int i;
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (!dev)
@@ -1214,18 +1246,19 @@ static int __init vivi_create_instance(int inst)
dev->fmt = &formats[0];
dev->width = 640;
dev->height = 480;
+
hdl = &dev->ctrl_handler;
- v4l2_ctrl_handler_init(hdl, 11);
+ v4l2_ctrl_handler_init(hdl, 12);
+ v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops,
+ V4L2_CID_BRIGHTNESS, i, 255, 1, 127 + i);
+ v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops,
+ V4L2_CID_CONTRAST, i, 255, 1, 16 + i);
+ v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops,
+ V4L2_CID_SATURATION, i, 255, 1, 127 + i);
+ v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops,
+ V4L2_CID_HUE, -128 + i, 127, 1, i);
dev->volume = v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops,
V4L2_CID_AUDIO_VOLUME, 0, 255, 1, 200);
- dev->brightness = v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops,
- V4L2_CID_BRIGHTNESS, 0, 255, 1, 127);
- dev->contrast = v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops,
- V4L2_CID_CONTRAST, 0, 255, 1, 16);
- dev->saturation = v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops,
- V4L2_CID_SATURATION, 0, 255, 1, 127);
- dev->hue = v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops,
- V4L2_CID_HUE, -128, 127, 1, 0);
dev->button = v4l2_ctrl_new_custom(hdl, &vivi_ctrl_button, NULL);
dev->int32 = v4l2_ctrl_new_custom(hdl, &vivi_ctrl_int32, NULL);
dev->int64 = v4l2_ctrl_new_custom(hdl, &vivi_ctrl_int64, NULL);
@@ -1296,7 +1329,7 @@ static int __init vivi_create_instance(int inst)
rel_vdev:
video_device_release(vfd);
unreg_dev:
- v4l2_ctrl_handler_free(hdl);
+ v4l2_ctrl_handler_free(&dev->ctrl_handler);
v4l2_device_unregister(&dev->v4l2_dev);
free_dev:
kfree(dev);
--
1.7.1
--
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