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path: root/drivers/media/video/cx231xx/cx231xx-vbi.c
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Diffstat (limited to 'drivers/media/video/cx231xx/cx231xx-vbi.c')
-rw-r--r--drivers/media/video/cx231xx/cx231xx-vbi.c86
1 files changed, 39 insertions, 47 deletions
diff --git a/drivers/media/video/cx231xx/cx231xx-vbi.c b/drivers/media/video/cx231xx/cx231xx-vbi.c
index 87a77d53faa6..03059043744c 100644
--- a/drivers/media/video/cx231xx/cx231xx-vbi.c
+++ b/drivers/media/video/cx231xx/cx231xx-vbi.c
@@ -109,27 +109,29 @@ static inline int cx231xx_isoc_vbi_copy(struct cx231xx *dev, struct urb *urb)
buffer_size = urb->actual_length;
if (buffer_size > 0) {
-
bytes_parsed = 0;
if (dma_q->is_partial_line) {
- /* Handle the case where we were working on a partial line */
+ /* Handle the case where we were working on a partial
+ line */
sav_eav = dma_q->last_sav;
} else {
- /* Check for a SAV/EAV overlapping the buffer boundary */
- sav_eav =
- cx231xx_find_boundary_SAV_EAV(p_buffer,
+ /* Check for a SAV/EAV overlapping the
+ buffer boundary */
+
+ sav_eav = cx231xx_find_boundary_SAV_EAV(p_buffer,
dma_q->partial_buf,
&bytes_parsed);
}
sav_eav &= 0xF0;
- /* Get the first line if we have some portion of an SAV/EAV from the last buffer
- or a partial line */
+ /* Get the first line if we have some portion of an SAV/EAV from
+ the last buffer or a partial line */
if (sav_eav) {
- bytes_parsed += cx231xx_get_vbi_line(dev, dma_q, sav_eav, /* SAV/EAV */
- p_buffer + bytes_parsed, /* p_buffer */
- buffer_size - bytes_parsed); /* buffer size */
+ bytes_parsed += cx231xx_get_vbi_line(dev, dma_q,
+ sav_eav, /* SAV/EAV */
+ p_buffer + bytes_parsed, /* p_buffer */
+ buffer_size - bytes_parsed); /* buffer size */
}
/* Now parse data that is completely in this buffer */
@@ -139,16 +141,17 @@ static inline int cx231xx_isoc_vbi_copy(struct cx231xx *dev, struct urb *urb)
u32 bytes_used = 0;
sav_eav = cx231xx_find_next_SAV_EAV(p_buffer + bytes_parsed, /* p_buffer */
- buffer_size - bytes_parsed, /* buffer size */
- &bytes_used); /* Receives bytes used to get SAV/EAV */
+ buffer_size - bytes_parsed, /* buffer size */
+ &bytes_used); /* Receives bytes used to get SAV/EAV */
bytes_parsed += bytes_used;
sav_eav &= 0xF0;
if (sav_eav && (bytes_parsed < buffer_size)) {
- bytes_parsed += cx231xx_get_vbi_line(dev, dma_q, sav_eav, /* SAV/EAV */
- p_buffer + bytes_parsed, /* p_buffer */
- buffer_size - bytes_parsed); /* buffer size */
+ bytes_parsed += cx231xx_get_vbi_line(dev,
+ dma_q, sav_eav, /* SAV/EAV */
+ p_buffer + bytes_parsed, /* p_buffer */
+ buffer_size - bytes_parsed); /* buffer size */
}
}
@@ -261,7 +264,7 @@ vbi_buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
buf->vb.state = VIDEOBUF_PREPARED;
return 0;
- fail:
+fail:
free_buffer(vq, buf);
return rc;
}
@@ -285,20 +288,15 @@ static void vbi_buffer_release(struct videobuf_queue *vq,
{
struct cx231xx_buffer *buf =
container_of(vb, struct cx231xx_buffer, vb);
- /*
- struct cx231xx_fh *fh = vq->priv_data;
- struct cx231xx *dev = (struct cx231xx *)fh->dev;
- cx231xx_info(DRIVER_NAME "cx231xx: called vbi_buffer_release\n");
- */
free_buffer(vq, buf);
}
struct videobuf_queue_ops cx231xx_vbi_qops = {
- .buf_setup = vbi_buffer_setup,
+ .buf_setup = vbi_buffer_setup,
.buf_prepare = vbi_buffer_prepare,
- .buf_queue = vbi_buffer_queue,
+ .buf_queue = vbi_buffer_queue,
.buf_release = vbi_buffer_release,
};
@@ -387,7 +385,6 @@ void cx231xx_uninit_vbi_isoc(struct cx231xx *dev)
cx231xx_capture_start(dev, 0, Vbi);
}
-
EXPORT_SYMBOL_GPL(cx231xx_uninit_vbi_isoc);
/*
@@ -395,8 +392,8 @@ EXPORT_SYMBOL_GPL(cx231xx_uninit_vbi_isoc);
*/
int cx231xx_init_vbi_isoc(struct cx231xx *dev, int max_packets,
int num_bufs, int max_pkt_size,
- int (*isoc_copy) (struct cx231xx * dev,
- struct urb * urb))
+ int (*isoc_copy) (struct cx231xx *dev,
+ struct urb *urb))
{
struct cx231xx_dmaqueue *dma_q = &dev->vbi_mode.vidq;
int i;
@@ -427,8 +424,8 @@ int cx231xx_init_vbi_isoc(struct cx231xx *dev, int max_packets,
for (i = 0; i < 8; i++)
dma_q->partial_buf[i] = 0;
- dev->vbi_mode.isoc_ctl.urb =
- kzalloc(sizeof(void *) * num_bufs, GFP_KERNEL);
+ dev->vbi_mode.isoc_ctl.urb = kzalloc(sizeof(void *) * num_bufs,
+ GFP_KERNEL);
if (!dev->vbi_mode.isoc_ctl.urb) {
cx231xx_errdev("cannot alloc memory for usb buffers\n");
return -ENOMEM;
@@ -466,7 +463,7 @@ int cx231xx_init_vbi_isoc(struct cx231xx *dev, int max_packets,
cx231xx_err(DRIVER_NAME
": unable to allocate %i bytes for transfer"
" buffer %i%s\n", sb_size, i,
- in_interrupt()? " while in int" : "");
+ in_interrupt() ? " while in int" : "");
cx231xx_uninit_vbi_isoc(dev);
return -ENOMEM;
}
@@ -495,11 +492,10 @@ int cx231xx_init_vbi_isoc(struct cx231xx *dev, int max_packets,
return 0;
}
-
EXPORT_SYMBOL_GPL(cx231xx_init_vbi_isoc);
-u32 cx231xx_get_vbi_line(struct cx231xx * dev, struct cx231xx_dmaqueue * dma_q,
- u8 sav_eav, u8 * p_buffer, u32 buffer_size)
+u32 cx231xx_get_vbi_line(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
+ u8 sav_eav, u8 *p_buffer, u32 buffer_size)
{
u32 bytes_copied = 0;
int current_field = -1;
@@ -550,15 +546,14 @@ static inline void vbi_buffer_filled(struct cx231xx *dev,
}
u32 cx231xx_copy_vbi_line(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
- u8 * p_line, u32 length, int field_number)
+ u8 *p_line, u32 length, int field_number)
{
u32 bytes_to_copy;
struct cx231xx_buffer *buf;
u32 _line_size = dev->width * 2;
- if (dma_q->current_field != field_number) {
+ if (dma_q->current_field != field_number)
cx231xx_reset_vbi_buffer(dev, dma_q);
- }
/* get the buffer pointer */
buf = dev->vbi_mode.isoc_ctl.buf;
@@ -651,7 +646,6 @@ void cx231xx_reset_vbi_buffer(struct cx231xx *dev,
buf = dev->vbi_mode.isoc_ctl.buf;
if (buf == NULL) {
-
/* first try to get the buffer */
get_next_vbi_buf(dma_q, &buf);
@@ -664,7 +658,7 @@ void cx231xx_reset_vbi_buffer(struct cx231xx *dev,
}
int cx231xx_do_vbi_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
- u8 * p_buffer, u32 bytes_to_copy)
+ u8 *p_buffer, u32 bytes_to_copy)
{
u8 *p_out_buffer = NULL;
u32 current_line_bytes_copied = 0;
@@ -675,9 +669,8 @@ int cx231xx_do_vbi_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
buf = dev->vbi_mode.isoc_ctl.buf;
- if (buf == NULL) {
- return -1;
- }
+ if (buf == NULL)
+ return -EINVAL;
p_out_buffer = videobuf_to_vmalloc(&buf->vb);
@@ -686,23 +679,22 @@ int cx231xx_do_vbi_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
_line_size - dma_q->bytes_left_in_line;
}
- offset =
- (dma_q->lines_completed * _line_size) + current_line_bytes_copied;
+ offset = (dma_q->lines_completed * _line_size) +
+ current_line_bytes_copied;
/* prepare destination address */
startwrite = p_out_buffer + offset;
- lencopy =
- dma_q->bytes_left_in_line >
- bytes_to_copy ? bytes_to_copy : dma_q->bytes_left_in_line;
+ lencopy = dma_q->bytes_left_in_line > bytes_to_copy ?
+ bytes_to_copy : dma_q->bytes_left_in_line;
memcpy(startwrite, p_buffer, lencopy);
return 0;
}
-u8 cx231xx_is_vbi_buffer_done(struct cx231xx * dev,
- struct cx231xx_dmaqueue * dma_q)
+u8 cx231xx_is_vbi_buffer_done(struct cx231xx *dev,
+ struct cx231xx_dmaqueue *dma_q)
{
u32 height = 0;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-28 10:00:22 +0100