From e68cf471e71d1e91c5661e1bb7595985158d59ae Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Fri, 5 Jun 2015 11:28:50 -0300 Subject: [PATCH] [media] v4l2-mem2mem: add support for prepare_buf This was never added for some reason, so add it now. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/v4l2-core/v4l2-mem2mem.c | 28 ++++++++++++++++++++++++++ include/media/v4l2-mem2mem.h | 4 ++++ 2 files changed, 32 insertions(+) diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c index cbef15c07e53..dc853e57f91f 100644 --- a/drivers/media/v4l2-core/v4l2-mem2mem.c +++ b/drivers/media/v4l2-core/v4l2-mem2mem.c @@ -426,6 +426,25 @@ int v4l2_m2m_dqbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, } EXPORT_SYMBOL_GPL(v4l2_m2m_dqbuf); +/** + * v4l2_m2m_prepare_buf() - prepare a source or destination buffer, depending on + * the type + */ +int v4l2_m2m_prepare_buf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, + struct v4l2_buffer *buf) +{ + struct vb2_queue *vq; + int ret; + + vq = v4l2_m2m_get_vq(m2m_ctx, buf->type); + ret = vb2_prepare_buf(vq, buf); + if (!ret) + v4l2_m2m_try_schedule(m2m_ctx); + + return ret; +} +EXPORT_SYMBOL_GPL(v4l2_m2m_prepare_buf); + /** * v4l2_m2m_create_bufs() - create a source or destination buffer, depending * on the type @@ -811,6 +830,15 @@ int v4l2_m2m_ioctl_dqbuf(struct file *file, void *priv, } EXPORT_SYMBOL_GPL(v4l2_m2m_ioctl_dqbuf); +int v4l2_m2m_ioctl_prepare_buf(struct file *file, void *priv, + struct v4l2_buffer *buf) +{ + struct v4l2_fh *fh = file->private_data; + + return v4l2_m2m_prepare_buf(file, fh->m2m_ctx, buf); +} +EXPORT_SYMBOL_GPL(v4l2_m2m_ioctl_prepare_buf); + int v4l2_m2m_ioctl_expbuf(struct file *file, void *priv, struct v4l2_exportbuffer *eb) { diff --git a/include/media/v4l2-mem2mem.h b/include/media/v4l2-mem2mem.h index c5f3914bc4d8..3bbd96da25c9 100644 --- a/include/media/v4l2-mem2mem.h +++ b/include/media/v4l2-mem2mem.h @@ -116,6 +116,8 @@ int v4l2_m2m_qbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, struct v4l2_buffer *buf); int v4l2_m2m_dqbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, struct v4l2_buffer *buf); +int v4l2_m2m_prepare_buf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, + struct v4l2_buffer *buf); int v4l2_m2m_create_bufs(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, struct v4l2_create_buffers *create); @@ -248,6 +250,8 @@ int v4l2_m2m_ioctl_qbuf(struct file *file, void *fh, struct v4l2_buffer *buf); int v4l2_m2m_ioctl_dqbuf(struct file *file, void *fh, struct v4l2_buffer *buf); +int v4l2_m2m_ioctl_prepare_buf(struct file *file, void *fh, + struct v4l2_buffer *buf); int v4l2_m2m_ioctl_streamon(struct file *file, void *fh, enum v4l2_buf_type type); int v4l2_m2m_ioctl_streamoff(struct file *file, void *fh, -- 2.20.1