[media] cx18: mmap() support for raw YUV video capture
Add support for mmap method streaming of raw YUV video on cx18-based
hardware, in addition to the existing support for read() streaming of
raw YUV and MPEG-2 encoded video.
[simon.farnsworth@onelan.co.uk: I forward-ported this from Steven's original work,
done under contract to ONELAN. The original code is at
http://www.kernellabs.com/hg/~stoth/cx18-videobuf]
Signed-off-by: Steven Toth <stoth@kernellabs.com>
Signed-off-by: Simon Farnsworth <simon.farnsworth@onelan.co.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/cx18/cx18-driver.h b/drivers/media/video/cx18/cx18-driver.h
index b86a740..70e1e04 100644
--- a/drivers/media/video/cx18/cx18-driver.h
+++ b/drivers/media/video/cx18/cx18-driver.h
@@ -65,6 +65,10 @@
#include "dvb_net.h"
#include "dvbdev.h"
+/* Videobuf / YUV support */
+#include <media/videobuf-core.h>
+#include <media/videobuf-vmalloc.h>
+
#ifndef CONFIG_PCI
# error "This driver requires kernel PCI support."
#endif
@@ -403,6 +407,23 @@
struct cx18_queue q_idle; /* idle - not in rotation */
struct work_struct out_work_order;
+
+ /* Videobuf for YUV video */
+ u32 pixelformat;
+ struct list_head vb_capture; /* video capture queue */
+ spinlock_t vb_lock;
+ struct v4l2_framebuffer fbuf;
+ v4l2_std_id tvnorm; /* selected tv norm */
+ struct timer_list vb_timeout;
+ int vbwidth;
+ int vbheight;
+};
+
+struct cx18_videobuf_buffer {
+ /* Common video buffer sub-system struct */
+ struct videobuf_buffer vb;
+ v4l2_std_id tvnorm; /* selected tv norm */
+ u32 bytes_used;
};
struct cx18_open_id {
@@ -410,6 +431,10 @@
u32 open_id;
int type;
struct cx18 *cx;
+
+ struct videobuf_queue vbuf_q;
+ spinlock_t s_lock; /* Protect vbuf_q */
+ enum v4l2_buf_type vb_type;
};
static inline struct cx18_open_id *fh2id(struct v4l2_fh *fh)