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authorHans Verkuil <hans.verkuil@cisco.com>2013-03-20 15:29:52 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2013-04-14 20:00:55 -0300
commit3315c59a45d5314c935a7dd82ab3c324c0d01343 (patch)
tree9938a497a3a0068516d43b455306f34202774338
parent8f69da955873f5e33b60ff117856a2bf1309a336 (diff)
[media] hdpvr: add dv_timings support
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
-rw-r--r--drivers/media/usb/hdpvr/hdpvr-video.c217
-rw-r--r--drivers/media/usb/hdpvr/hdpvr.h1
2 files changed, 194 insertions, 24 deletions
diff --git a/drivers/media/usb/hdpvr/hdpvr-video.c b/drivers/media/usb/hdpvr/hdpvr-video.c
index 042f204972a4..43763097d9bf 100644
--- a/drivers/media/usb/hdpvr/hdpvr-video.c
+++ b/drivers/media/usb/hdpvr/hdpvr-video.c
@@ -21,6 +21,7 @@
#include <linux/workqueue.h>
#include <linux/videodev2.h>
+#include <linux/v4l2-dv-timings.h>
#include <media/v4l2-dev.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
@@ -36,6 +37,25 @@
list_size(&dev->free_buff_list), \
list_size(&dev->rec_buff_list)); }
+static const struct v4l2_dv_timings hdpvr_dv_timings[] = {
+ V4L2_DV_BT_CEA_720X480I59_94,
+ V4L2_DV_BT_CEA_720X576I50,
+ V4L2_DV_BT_CEA_720X480P59_94,
+ V4L2_DV_BT_CEA_720X576P50,
+ V4L2_DV_BT_CEA_1280X720P50,
+ V4L2_DV_BT_CEA_1280X720P60,
+ V4L2_DV_BT_CEA_1920X1080I50,
+ V4L2_DV_BT_CEA_1920X1080I60,
+};
+
+/* Use 480i59 as the default timings */
+#define HDPVR_DEF_DV_TIMINGS_IDX (0)
+
+struct hdpvr_fh {
+ struct v4l2_fh fh;
+ bool legacy_mode;
+};
+
static uint list_size(struct list_head *list)
{
struct list_head *tmp;
@@ -355,13 +375,23 @@ static int hdpvr_stop_streaming(struct hdpvr_device *dev)
* video 4 linux 2 file operations
*/
+static int hdpvr_open(struct file *file)
+{
+ struct hdpvr_fh *fh = kzalloc(sizeof(*fh), GFP_KERNEL);
+
+ if (fh == NULL)
+ return -ENOMEM;
+ fh->legacy_mode = true;
+ v4l2_fh_init(&fh->fh, video_devdata(file));
+ v4l2_fh_add(&fh->fh);
+ file->private_data = fh;
+ return 0;
+}
+
static int hdpvr_release(struct file *file)
{
struct hdpvr_device *dev = video_drvdata(file);
- if (!dev)
- return -ENODEV;
-
mutex_lock(&dev->io_mutex);
if (file->private_data == dev->owner) {
hdpvr_stop_streaming(dev);
@@ -388,9 +418,6 @@ static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count,
if (*pos)
return -ESPIPE;
- if (!dev)
- return -ENODEV;
-
mutex_lock(&dev->io_mutex);
if (dev->status == STATUS_IDLE) {
if (hdpvr_start_streaming(dev)) {
@@ -518,7 +545,7 @@ static unsigned int hdpvr_poll(struct file *filp, poll_table *wait)
static const struct v4l2_file_operations hdpvr_fops = {
.owner = THIS_MODULE,
- .open = v4l2_fh_open,
+ .open = hdpvr_open,
.release = hdpvr_release,
.read = hdpvr_read,
.poll = hdpvr_poll,
@@ -594,6 +621,121 @@ static int vidioc_querystd(struct file *file, void *fh, v4l2_std_id *a)
return 0;
}
+static int vidioc_s_dv_timings(struct file *file, void *_fh,
+ struct v4l2_dv_timings *timings)
+{
+ struct hdpvr_device *dev = video_drvdata(file);
+ struct hdpvr_fh *fh = _fh;
+ int i;
+
+ fh->legacy_mode = false;
+ if (dev->options.video_input)
+ return -ENODATA;
+ if (dev->status != STATUS_IDLE)
+ return -EBUSY;
+ for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++)
+ if (v4l_match_dv_timings(timings, hdpvr_dv_timings + i, 0))
+ break;
+ if (i == ARRAY_SIZE(hdpvr_dv_timings))
+ return -EINVAL;
+ dev->cur_dv_timings = hdpvr_dv_timings[i];
+ dev->width = hdpvr_dv_timings[i].bt.width;
+ dev->height = hdpvr_dv_timings[i].bt.height;
+ return 0;
+}
+
+static int vidioc_g_dv_timings(struct file *file, void *_fh,
+ struct v4l2_dv_timings *timings)
+{
+ struct hdpvr_device *dev = video_drvdata(file);
+ struct hdpvr_fh *fh = _fh;
+
+ fh->legacy_mode = false;
+ if (dev->options.video_input)
+ return -ENODATA;
+ *timings = dev->cur_dv_timings;
+ return 0;
+}
+
+static int vidioc_query_dv_timings(struct file *file, void *_fh,
+ struct v4l2_dv_timings *timings)
+{
+ struct hdpvr_device *dev = video_drvdata(file);
+ struct hdpvr_fh *fh = _fh;
+ struct hdpvr_video_info *vid_info;
+ bool interlaced;
+ int ret = 0;
+ int i;
+
+ fh->legacy_mode = false;
+ if (dev->options.video_input)
+ return -ENODATA;
+ vid_info = get_video_info(dev);
+ if (vid_info == NULL)
+ return -ENOLCK;
+ interlaced = vid_info->fps <= 30;
+ for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) {
+ const struct v4l2_bt_timings *bt = &hdpvr_dv_timings[i].bt;
+ unsigned hsize;
+ unsigned vsize;
+ unsigned fps;
+
+ hsize = bt->hfrontporch + bt->hsync + bt->hbackporch + bt->width;
+ vsize = bt->vfrontporch + bt->vsync + bt->vbackporch +
+ bt->il_vfrontporch + bt->il_vsync + bt->il_vbackporch +
+ bt->height;
+ fps = (unsigned)bt->pixelclock / (hsize * vsize);
+ if (bt->width != vid_info->width ||
+ bt->height != vid_info->height ||
+ bt->interlaced != interlaced ||
+ (fps != vid_info->fps && fps + 1 != vid_info->fps))
+ continue;
+ *timings = hdpvr_dv_timings[i];
+ break;
+ }
+ if (i == ARRAY_SIZE(hdpvr_dv_timings))
+ ret = -ERANGE;
+ kfree(vid_info);
+ return ret;
+}
+
+static int vidioc_enum_dv_timings(struct file *file, void *_fh,
+ struct v4l2_enum_dv_timings *timings)
+{
+ struct hdpvr_device *dev = video_drvdata(file);
+ struct hdpvr_fh *fh = _fh;
+
+ fh->legacy_mode = false;
+ memset(timings->reserved, 0, sizeof(timings->reserved));
+ if (dev->options.video_input)
+ return -ENODATA;
+ if (timings->index >= ARRAY_SIZE(hdpvr_dv_timings))
+ return -EINVAL;
+ timings->timings = hdpvr_dv_timings[timings->index];
+ return 0;
+}
+
+static int vidioc_dv_timings_cap(struct file *file, void *_fh,
+ struct v4l2_dv_timings_cap *cap)
+{
+ struct hdpvr_device *dev = video_drvdata(file);
+ struct hdpvr_fh *fh = _fh;
+
+ fh->legacy_mode = false;
+ if (dev->options.video_input)
+ return -ENODATA;
+ cap->type = V4L2_DV_BT_656_1120;
+ cap->bt.min_width = 720;
+ cap->bt.max_width = 1920;
+ cap->bt.min_height = 480;
+ cap->bt.max_height = 1080;
+ cap->bt.min_pixelclock = 27000000;
+ cap->bt.max_pixelclock = 74250000;
+ cap->bt.standards = V4L2_DV_BT_STD_CEA861;
+ cap->bt.capabilities = V4L2_DV_BT_CAP_INTERLACED | V4L2_DV_BT_CAP_PROGRESSIVE;
+ return 0;
+}
+
static const char *iname[] = {
[HDPVR_COMPONENT] = "Component",
[HDPVR_SVIDEO] = "S-Video",
@@ -827,29 +969,48 @@ static int vidioc_enum_fmt_vid_cap(struct file *file, void *private_data,
return 0;
}
-static int vidioc_g_fmt_vid_cap(struct file *file, void *private_data,
+static int vidioc_g_fmt_vid_cap(struct file *file, void *_fh,
struct v4l2_format *f)
{
struct hdpvr_device *dev = video_drvdata(file);
- struct hdpvr_video_info *vid_info;
-
- if (!dev)
- return -ENODEV;
-
- vid_info = get_video_info(dev);
- if (!vid_info)
- return -EFAULT;
-
- f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ struct hdpvr_fh *fh = _fh;
+
+ /*
+ * The original driver would always returns the current detected
+ * resolution as the format (and EFAULT if it couldn't be detected).
+ * With the introduction of VIDIOC_QUERY_DV_TIMINGS there is now a
+ * better way of doing this, but to stay compatible with existing
+ * applications we assume legacy mode every time an application opens
+ * the device. Only if one of the new DV_TIMINGS ioctls is called
+ * will the filehandle go into 'normal' mode where g_fmt returns the
+ * last set format.
+ */
+ if (fh->legacy_mode) {
+ struct hdpvr_video_info *vid_info;
+
+ vid_info = get_video_info(dev);
+ if (!vid_info)
+ return -EFAULT;
+ f->fmt.pix.width = vid_info->width;
+ f->fmt.pix.height = vid_info->height;
+ kfree(vid_info);
+ } else {
+ f->fmt.pix.width = dev->width;
+ f->fmt.pix.height = dev->height;
+ }
f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
- f->fmt.pix.width = vid_info->width;
- f->fmt.pix.height = vid_info->height;
f->fmt.pix.sizeimage = dev->bulk_in_size;
- f->fmt.pix.colorspace = 0;
f->fmt.pix.bytesperline = 0;
- f->fmt.pix.field = V4L2_FIELD_ANY;
-
- kfree(vid_info);
+ f->fmt.pix.priv = 0;
+ if (f->fmt.pix.width == 720) {
+ /* SDTV formats */
+ f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
+ f->fmt.pix.field = V4L2_FIELD_INTERLACED;
+ } else {
+ /* HDTV formats */
+ f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE240M;
+ f->fmt.pix.field = V4L2_FIELD_NONE;
+ }
return 0;
}
@@ -916,6 +1077,11 @@ static const struct v4l2_ioctl_ops hdpvr_ioctl_ops = {
.vidioc_s_std = vidioc_s_std,
.vidioc_g_std = vidioc_g_std,
.vidioc_querystd = vidioc_querystd,
+ .vidioc_s_dv_timings = vidioc_s_dv_timings,
+ .vidioc_g_dv_timings = vidioc_g_dv_timings,
+ .vidioc_query_dv_timings= vidioc_query_dv_timings,
+ .vidioc_enum_dv_timings = vidioc_enum_dv_timings,
+ .vidioc_dv_timings_cap = vidioc_dv_timings_cap,
.vidioc_enum_input = vidioc_enum_input,
.vidioc_g_input = vidioc_g_input,
.vidioc_s_input = vidioc_s_input,
@@ -924,6 +1090,8 @@ static const struct v4l2_ioctl_ops hdpvr_ioctl_ops = {
.vidioc_s_audio = vidioc_s_audio,
.vidioc_enum_fmt_vid_cap= vidioc_enum_fmt_vid_cap,
.vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
+ .vidioc_s_fmt_vid_cap = vidioc_g_fmt_vid_cap,
+ .vidioc_try_fmt_vid_cap = vidioc_g_fmt_vid_cap,
.vidioc_encoder_cmd = vidioc_encoder_cmd,
.vidioc_try_encoder_cmd = vidioc_try_encoder_cmd,
.vidioc_log_status = v4l2_ctrl_log_status,
@@ -975,6 +1143,7 @@ int hdpvr_register_videodev(struct hdpvr_device *dev, struct device *parent,
dev->cur_std = V4L2_STD_525_60;
dev->width = 720;
dev->height = 480;
+ dev->cur_dv_timings = hdpvr_dv_timings[HDPVR_DEF_DV_TIMINGS_IDX];
v4l2_ctrl_handler_init(hdl, 11);
if (dev->fw_ver > 0x15) {
v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
diff --git a/drivers/media/usb/hdpvr/hdpvr.h b/drivers/media/usb/hdpvr/hdpvr.h
index 050c6b9fec53..1478f3d57630 100644
--- a/drivers/media/usb/hdpvr/hdpvr.h
+++ b/drivers/media/usb/hdpvr/hdpvr.h
@@ -92,6 +92,7 @@ struct hdpvr_device {
/* holds the current set options */
struct hdpvr_options options;
v4l2_std_id cur_std;
+ struct v4l2_dv_timings cur_dv_timings;
uint flags;

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