summaryrefslogtreecommitdiff
path: root/linux/drivers/media/video/em28xx/em28xx-video.c
diff options
context:
space:
mode:
Diffstat (limited to 'linux/drivers/media/video/em28xx/em28xx-video.c')
-rw-r--r--linux/drivers/media/video/em28xx/em28xx-video.c254
1 files changed, 173 insertions, 81 deletions
diff --git a/linux/drivers/media/video/em28xx/em28xx-video.c b/linux/drivers/media/video/em28xx/em28xx-video.c
index e447c9f0a..c7d723a03 100644
--- a/linux/drivers/media/video/em28xx/em28xx-video.c
+++ b/linux/drivers/media/video/em28xx/em28xx-video.c
@@ -142,7 +142,7 @@ static struct em28xx_fmt format[] = {
/* supported controls */
/* Common to all boards */
-static struct v4l2_queryctrl em28xx_qctrl[] = {
+static struct v4l2_queryctrl ac97_qctrl[] = {
{
.id = V4L2_CID_AUDIO_VOLUME,
.type = V4L2_CTRL_TYPE_INTEGER,
@@ -151,7 +151,7 @@ static struct v4l2_queryctrl em28xx_qctrl[] = {
.maximum = 0x1f,
.step = 0x1,
.default_value = 0x1f,
- .flags = 0,
+ .flags = V4L2_CTRL_FLAG_SLIDER,
}, {
.id = V4L2_CID_AUDIO_MUTE,
.type = V4L2_CTRL_TYPE_BOOLEAN,
@@ -212,15 +212,24 @@ static void em28xx_copy_video(struct em28xx *dev,
startread = p;
remain = len;
- /* Interlaces frame */
- if (buf->top_field)
+ if (dev->progressive)
fieldstart = outp;
- else
- fieldstart = outp + bytesperline;
+ else {
+ /* Interlaces two half frames */
+ if (buf->top_field)
+ fieldstart = outp;
+ else
+ fieldstart = outp + bytesperline;
+ }
linesdone = dma_q->pos / bytesperline;
currlinedone = dma_q->pos % bytesperline;
- offset = linesdone * bytesperline * 2 + currlinedone;
+
+ if (dev->progressive)
+ offset = linesdone * bytesperline + currlinedone;
+ else
+ offset = linesdone * bytesperline * 2 + currlinedone;
+
startwrite = fieldstart + offset;
lencopy = bytesperline - currlinedone;
lencopy = lencopy > remain ? remain : lencopy;
@@ -398,7 +407,7 @@ static inline int em28xx_isoc_copy(struct em28xx *dev, struct urb *urb)
em28xx_isocdbg("Video frame %d, length=%i, %s\n", p[2],
len, (p[2] & 1) ? "odd" : "even");
- if (!(p[2] & 1)) {
+ if (dev->progressive || !(p[2] & 1)) {
if (buf != NULL)
buffer_filled(dev, dma_q, buf);
get_next_buf(dma_q, &buf);
@@ -622,10 +631,29 @@ static void res_free(struct em28xx_fh *fh)
}
/*
- * em28xx_get_ctrl()
- * return the current saturation, brightness or contrast, mute state
+ * ac97_queryctrl()
+ * return the ac97 supported controls
*/
-static int em28xx_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
+static int ac97_queryctrl(struct v4l2_queryctrl *qc)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++) {
+ if (qc->id && qc->id == ac97_qctrl[i].id) {
+ memcpy(qc, &(ac97_qctrl[i]), sizeof(*qc));
+ return 0;
+ }
+ }
+
+ /* Control is not ac97 related */
+ return 1;
+}
+
+/*
+ * ac97_get_ctrl()
+ * return the current values for ac97 mute and volume
+ */
+static int ac97_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
{
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
@@ -635,29 +663,41 @@ static int em28xx_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
ctrl->value = dev->volume;
return 0;
default:
- return -EINVAL;
+ /* Control is not ac97 related */
+ return 1;
}
}
/*
- * em28xx_set_ctrl()
- * mute or set new saturation, brightness or contrast
+ * ac97_set_ctrl()
+ * set values for ac97 mute and volume
*/
-static int em28xx_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
+static int ac97_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++)
+ if (ctrl->id == ac97_qctrl[i].id)
+ goto handle;
+
+ /* Announce that hasn't handle it */
+ return 1;
+
+handle:
+ if (ctrl->value < ac97_qctrl[i].minimum ||
+ ctrl->value > ac97_qctrl[i].maximum)
+ return -ERANGE;
+
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
- if (ctrl->value != dev->mute) {
- dev->mute = ctrl->value;
- return em28xx_audio_analog_set(dev);
- }
- return 0;
+ dev->mute = ctrl->value;
+ break;
case V4L2_CID_AUDIO_VOLUME:
dev->volume = ctrl->value;
- return em28xx_audio_analog_set(dev);
- default:
- return -EINVAL;
+ break;
}
+
+ return em28xx_audio_analog_set(dev);
}
static int check_dev(struct em28xx *dev)
@@ -679,8 +719,8 @@ static void get_scale(struct em28xx *dev,
unsigned int width, unsigned int height,
unsigned int *hscale, unsigned int *vscale)
{
- unsigned int maxw = norm_maxw(dev);
- unsigned int maxh = norm_maxh(dev);
+ unsigned int maxw = norm_maxw(dev);
+ unsigned int maxh = norm_maxh(dev);
*hscale = (((unsigned long)maxw) << 12) / width - 4096L;
if (*hscale >= 0x4000)
@@ -711,7 +751,10 @@ static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
/* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
- f->fmt.pix.field = dev->interlaced ?
+ if (dev->progressive)
+ f->fmt.pix.field = V4L2_FIELD_NONE;
+ else
+ f->fmt.pix.field = dev->interlaced ?
V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
mutex_unlock(&dev->lock);
@@ -748,11 +791,7 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
return -EINVAL;
}
- if (dev->board.is_webcam) {
- /* FIXME: This is the only supported fmt */
- width = 640;
- height = 480;
- } else if (dev->board.is_em2800) {
+ if (dev->board.is_em2800) {
/* the em2800 can only scale down to 50% */
height = height > (3 * maxh / 4) ? maxh : maxh / 2;
width = width > (3 * maxw / 4) ? maxw : maxw / 2;
@@ -779,7 +818,11 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3;
f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
- f->fmt.pix.field = V4L2_FIELD_INTERLACED;
+ if (dev->progressive)
+ f->fmt.pix.field = V4L2_FIELD_NONE;
+ else
+ f->fmt.pix.field = dev->interlaced ?
+ V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
return 0;
}
@@ -789,12 +832,6 @@ static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc,
{
struct em28xx_fmt *fmt;
- /* FIXME: This is the only supported fmt */
- if (dev->board.is_webcam) {
- width = 640;
- height = 480;
- }
-
fmt = format_by_fourcc(fourcc);
if (!fmt)
return -EINVAL;
@@ -878,6 +915,41 @@ static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
return 0;
}
+static int vidioc_g_parm(struct file *file, void *priv,
+ struct v4l2_streamparm *p)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc = 0;
+
+ if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ if (dev->board.is_webcam)
+ rc = v4l2_device_call_until_err(&dev->v4l2_dev, 0,
+ video, g_parm, p);
+ else
+ v4l2_video_std_frame_period(dev->norm,
+ &p->parm.capture.timeperframe);
+
+ return rc;
+}
+
+static int vidioc_s_parm(struct file *file, void *priv,
+ struct v4l2_streamparm *p)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+
+ if (!dev->board.is_webcam)
+ return -EINVAL;
+
+ if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ return v4l2_device_call_until_err(&dev->v4l2_dev, 0, video, s_parm, p);
+}
+
static const char *iname[] = {
[EM28XX_VMUX_COMPOSITE1] = "Composite1",
[EM28XX_VMUX_COMPOSITE2] = "Composite2",
@@ -955,6 +1027,9 @@ static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
struct em28xx_fh *fh = priv;
struct em28xx *dev = fh->dev;
+ if (!dev->audio_mode.has_audio)
+ return -EINVAL;
+
switch (a->index) {
case EM28XX_AMUX_VIDEO:
strcpy(a->name, "Television");
@@ -1001,6 +1076,9 @@ static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
return -EINVAL;
#else
+ if (!dev->audio_mode.has_audio)
+ return -EINVAL;
+
if (a->index >= MAX_EM28XX_INPUT)
return -EINVAL;
if (0 == INPUT(a->index)->type)
@@ -1025,7 +1103,6 @@ static int vidioc_queryctrl(struct file *file, void *priv,
struct em28xx_fh *fh = priv;
struct em28xx *dev = fh->dev;
int id = qc->id;
- int i;
int rc;
rc = check_dev(dev);
@@ -1036,15 +1113,14 @@ static int vidioc_queryctrl(struct file *file, void *priv,
qc->id = id;
- if (!dev->board.has_msp34xx) {
- for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
- if (qc->id && qc->id == em28xx_qctrl[i].id) {
- memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc));
- return 0;
- }
- }
+ /* enumberate AC97 controls */
+ if (dev->audio_mode.ac97 != EM28XX_NO_AC97) {
+ rc = ac97_queryctrl(qc);
+ if (!rc)
+ return 0;
}
+ /* enumberate V4L2 device controls */
mutex_lock(&dev->lock);
v4l2_device_call_all(&dev->v4l2_dev, 0, core, queryctrl, qc);
mutex_unlock(&dev->lock);
@@ -1069,14 +1145,16 @@ static int vidioc_g_ctrl(struct file *file, void *priv,
mutex_lock(&dev->lock);
- if (dev->board.has_msp34xx)
+ /* Set an AC97 control */
+ if (dev->audio_mode.ac97 != EM28XX_NO_AC97)
+ rc = ac97_get_ctrl(dev, ctrl);
+ else
+ rc = 1;
+
+ /* It were not an AC97 control. Sends it to the v4l2 dev interface */
+ if (rc == 1) {
v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl);
- else {
- rc = em28xx_get_ctrl(dev, ctrl);
- if (rc < 0) {
- v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl);
- rc = 0;
- }
+ rc = 0;
}
mutex_unlock(&dev->lock);
@@ -1088,7 +1166,6 @@ static int vidioc_s_ctrl(struct file *file, void *priv,
{
struct em28xx_fh *fh = priv;
struct em28xx *dev = fh->dev;
- u8 i;
int rc;
rc = check_dev(dev);
@@ -1097,28 +1174,31 @@ static int vidioc_s_ctrl(struct file *file, void *priv,
mutex_lock(&dev->lock);
- if (dev->board.has_msp34xx)
- v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_ctrl, ctrl);
- else {
+ /* Set an AC97 control */
+ if (dev->audio_mode.ac97 != EM28XX_NO_AC97)
+ rc = ac97_set_ctrl(dev, ctrl);
+ else
rc = 1;
- for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
- if (ctrl->id == em28xx_qctrl[i].id) {
- if (ctrl->value < em28xx_qctrl[i].minimum ||
- ctrl->value > em28xx_qctrl[i].maximum) {
- rc = -ERANGE;
- break;
- }
-
- rc = em28xx_set_ctrl(dev, ctrl);
- break;
- }
- }
- }
- /* Control not found - try to send it to the attached devices */
+ /* It isn't an AC97 control. Sends it to the v4l2 dev interface */
if (rc == 1) {
v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_ctrl, ctrl);
- rc = 0;
+
+ /*
+ * In the case of non-AC97 volume controls, we still need
+ * to do some setups at em28xx, in order to mute/unmute
+ * and to adjust audio volume. However, the value ranges
+ * should be checked by the corresponding V4L subdriver.
+ */
+ switch (ctrl->id) {
+ case V4L2_CID_AUDIO_MUTE:
+ dev->mute = ctrl->value;
+ rc = em28xx_audio_analog_set(dev);
+ break;
+ case V4L2_CID_AUDIO_VOLUME:
+ dev->volume = ctrl->value;
+ rc = em28xx_audio_analog_set(dev);
+ }
}
mutex_unlock(&dev->lock);
@@ -1262,8 +1342,9 @@ static int vidioc_g_register(struct file *file, void *priv,
v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
return 0;
case V4L2_CHIP_MATCH_I2C_ADDR:
- /* Not supported yet */
- return -EINVAL;
+ /* TODO: is this correct? */
+ v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
+ return 0;
default:
if (!v4l2_chip_match_host(&reg->match))
return -EINVAL;
@@ -1314,8 +1395,9 @@ static int vidioc_s_register(struct file *file, void *priv,
v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
return 0;
case V4L2_CHIP_MATCH_I2C_ADDR:
- /* Not supported yet */
- return -EINVAL;
+ /* TODO: is this correct? */
+ v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
+ return 0;
default:
if (!v4l2_chip_match_host(&reg->match))
return -EINVAL;
@@ -1421,9 +1503,11 @@ static int vidioc_querycap(struct file *file, void *priv,
#endif
V4L2_CAP_SLICED_VBI_CAPTURE |
V4L2_CAP_VIDEO_CAPTURE |
- V4L2_CAP_AUDIO |
V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
+ if (dev->audio_mode.has_audio)
+ cap->capabilities |= V4L2_CAP_AUDIO;
+
if (dev->tuner_type != TUNER_ABSENT)
cap->capabilities |= V4L2_CAP_TUNER;
@@ -1678,9 +1762,9 @@ static int radio_queryctrl(struct file *file, void *priv,
qc->id >= V4L2_CID_LASTP1)
return -EINVAL;
- for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
- if (qc->id && qc->id == em28xx_qctrl[i].id) {
- memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc));
+ for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++) {
+ if (qc->id && qc->id == ac97_qctrl[i].id) {
+ memcpy(qc, &(ac97_qctrl[i]), sizeof(*qc));
return 0;
}
}
@@ -1699,6 +1783,7 @@ static int em28xx_v4l2_open(struct file *filp)
struct em28xx *dev;
enum v4l2_buf_type fh_type;
struct em28xx_fh *fh;
+ enum v4l2_field field;
dev = em28xx_get_device(minor, &fh_type, &radio);
@@ -1755,8 +1840,13 @@ static int em28xx_v4l2_open(struct file *filp)
dev->users++;
+ if (dev->progressive)
+ field = V4L2_FIELD_NONE;
+ else
+ field = V4L2_FIELD_INTERLACED;
+
videobuf_queue_vmalloc_init(&fh->vb_vidq, &em28xx_video_qops,
- NULL, &dev->slock, fh->type, V4L2_FIELD_INTERLACED,
+ NULL, &dev->slock, fh->type, field,
sizeof(struct em28xx_buffer), fh);
mutex_unlock(&dev->lock);
@@ -1980,6 +2070,8 @@ static const struct v4l2_ioctl_ops video_ioctl_ops = {
.vidioc_qbuf = vidioc_qbuf,
.vidioc_dqbuf = vidioc_dqbuf,
.vidioc_s_std = vidioc_s_std,
+ .vidioc_g_parm = vidioc_g_parm,
+ .vidioc_s_parm = vidioc_s_parm,
.vidioc_enum_input = vidioc_enum_input,
.vidioc_g_input = vidioc_g_input,
.vidioc_s_input = vidioc_s_input,
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-03 19:31:14 +0000