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[media] em28xx: move capture state tracking fields from struct em28xx to struct v4l2

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Move some temporary capture tracking date to the em28xx_v4l2 struct,
as those info are used only by em28xx v4l2 submodule.

Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Frank Schaefer 2014-03-24 16:33:20 -03:00 committed by Mauro Carvalho Chehab
parent d7dc18da63
commit f0e38230b3
2 changed files with 29 additions and 28 deletions
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44
drivers/media/usb/em28xx/em28xx-video.c
View File

@ -434,7 +434,7 @@ static inline void finish_buffer(struct em28xx *dev,
{
em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->top_field);
buf->vb.v4l2_buf.sequence = dev->field_count++;
buf->vb.v4l2_buf.sequence = dev->v4l2->field_count++;
buf->vb.v4l2_buf.field = V4L2_FIELD_INTERLACED;
v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp);
@ -616,13 +616,13 @@ finish_field_prepare_next(struct em28xx *dev,
{
struct em28xx_v4l2 *v4l2 = dev->v4l2;
if (v4l2->progressive || dev->top_field) { /* Brand new frame */
if (v4l2->progressive || v4l2->top_field) { /* Brand new frame */
if (buf != NULL)
finish_buffer(dev, buf);
buf = get_next_buf(dev, dma_q);
}
if (buf != NULL) {
buf->top_field = dev->top_field;
buf->top_field = v4l2->top_field;
buf->pos = 0;
}
@ -656,17 +656,17 @@ static inline void process_frame_data_em28xx(struct em28xx *dev,
data_len -= 4;
} else if (data_pkt[0] == 0x33 && data_pkt[1] == 0x95) {
/* Field start (VBI mode) */
dev->capture_type = 0;
dev->vbi_read = 0;
v4l2->capture_type = 0;
v4l2->vbi_read = 0;
em28xx_isocdbg("VBI START HEADER !!!\n");
dev->top_field = !(data_pkt[2] & 1);
v4l2->top_field = !(data_pkt[2] & 1);
data_pkt += 4;
data_len -= 4;
} else if (data_pkt[0] == 0x22 && data_pkt[1] == 0x5a) {
/* Field start (VBI disabled) */
dev->capture_type = 2;
v4l2->capture_type = 2;
em28xx_isocdbg("VIDEO START HEADER !!!\n");
dev->top_field = !(data_pkt[2] & 1);
v4l2->top_field = !(data_pkt[2] & 1);
data_pkt += 4;
data_len -= 4;
}
@ -674,37 +674,37 @@ static inline void process_frame_data_em28xx(struct em28xx *dev,
/* NOTE: With bulk transfers, intermediate data packets
* have no continuation header */
if (dev->capture_type == 0) {
if (v4l2->capture_type == 0) {
vbi_buf = finish_field_prepare_next(dev, vbi_buf, vbi_dma_q);
dev->usb_ctl.vbi_buf = vbi_buf;
dev->capture_type = 1;
v4l2->capture_type = 1;
}
if (dev->capture_type == 1) {
if (v4l2->capture_type == 1) {
int vbi_size = v4l2->vbi_width * v4l2->vbi_height;
int vbi_data_len = ((dev->vbi_read + data_len) > vbi_size) ?
(vbi_size - dev->vbi_read) : data_len;
int vbi_data_len = ((v4l2->vbi_read + data_len) > vbi_size) ?
(vbi_size - v4l2->vbi_read) : data_len;
/* Copy VBI data */
if (vbi_buf != NULL)
em28xx_copy_vbi(dev, vbi_buf, data_pkt, vbi_data_len);
dev->vbi_read += vbi_data_len;
v4l2->vbi_read += vbi_data_len;
if (vbi_data_len < data_len) {
/* Continue with copying video data */
dev->capture_type = 2;
v4l2->capture_type = 2;
data_pkt += vbi_data_len;
data_len -= vbi_data_len;
}
}
if (dev->capture_type == 2) {
if (v4l2->capture_type == 2) {
buf = finish_field_prepare_next(dev, buf, dma_q);
dev->usb_ctl.vid_buf = buf;
dev->capture_type = 3;
v4l2->capture_type = 3;
}
if (dev->capture_type == 3 && buf != NULL && data_len > 0)
if (v4l2->capture_type == 3 && buf != NULL && data_len > 0)
em28xx_copy_video(dev, buf, data_pkt, data_len);
}
@ -717,6 +717,7 @@ static inline void process_frame_data_em25xx(struct em28xx *dev,
{
struct em28xx_buffer *buf = dev->usb_ctl.vid_buf;
struct em28xx_dmaqueue *dmaq = &dev->vidq;
struct em28xx_v4l2 *v4l2 = dev->v4l2;
bool frame_end = 0;
/* Check for header */
@ -725,7 +726,7 @@ static inline void process_frame_data_em25xx(struct em28xx *dev,
if (data_len >= 2) { /* em25xx header is only 2 bytes long */
if ((data_pkt[0] == EM25XX_FRMDATAHDR_BYTE1) &&
((data_pkt[1] & ~EM25XX_FRMDATAHDR_BYTE2_MASK) == 0x00)) {
dev->top_field = !(data_pkt[1] &
v4l2->top_field = !(data_pkt[1] &
EM25XX_FRMDATAHDR_BYTE2_FRAME_ID);
frame_end = data_pkt[1] &
EM25XX_FRMDATAHDR_BYTE2_FRAME_END;
@ -921,6 +922,7 @@ buffer_prepare(struct vb2_buffer *vb)
int em28xx_start_analog_streaming(struct vb2_queue *vq, unsigned int count)
{
struct em28xx *dev = vb2_get_drv_priv(vq);
struct em28xx_v4l2 *v4l2 = dev->v4l2;
struct v4l2_frequency f;
int rc = 0;
@ -943,7 +945,7 @@ int em28xx_start_analog_streaming(struct vb2_queue *vq, unsigned int count)
*/
em28xx_wake_i2c(dev);
dev->capture_type = -1;
v4l2->capture_type = -1;
rc = em28xx_init_usb_xfer(dev, EM28XX_ANALOG_MODE,
dev->analog_xfer_bulk,
EM28XX_NUM_BUFS,
@ -966,7 +968,7 @@ int em28xx_start_analog_streaming(struct vb2_queue *vq, unsigned int count)
f.type = V4L2_TUNER_RADIO;
else
f.type = V4L2_TUNER_ANALOG_TV;
v4l2_device_call_all(&dev->v4l2->v4l2_dev,
v4l2_device_call_all(&v4l2->v4l2_dev,
0, tuner, s_frequency, &f);
}

13
drivers/media/usb/em28xx/em28xx.h
View File

@ -539,6 +539,12 @@ struct em28xx_v4l2 {
unsigned vscale; /* vertical scale factor (see datasheet) */
unsigned int vbi_width;
unsigned int vbi_height; /* lines per field */
/* Capture state tracking */
int capture_type;
bool top_field;
int vbi_read;
unsigned int field_count;
};
struct em28xx_audio {
@ -649,11 +655,6 @@ struct em28xx {
unsigned long i2c_hash; /* i2c devicelist hash -
for boards with generic ID */
/* capture state tracking */
int capture_type;
unsigned char top_field:1;
int vbi_read;
struct work_struct request_module_wk;
/* locks */
@ -673,8 +674,6 @@ struct em28xx {
struct em28xx_usb_ctl usb_ctl;
spinlock_t slock;
unsigned int field_count;
/* usb transfer */
struct usb_device *udev; /* the usb device */
u8 ifnum; /* number of the assigned usb interface */