I have a system where the data is planar, but the kernel drivers
expect to get one allocation with offsets for the planes. I can't
figure out how to do that with the current dma_buf implementation. I
thought I could pass the same dma_buf several times and use the
data_offset field of the
On Tue, Jun 5, 2012 at 3:34 AM, Rebecca Schultz Zavin
rebe...@android.com wrote:
I have a system where the data is planar, but the kernel drivers
expect to get one allocation with offsets for the planes. I can't
figure out how to do that with the current dma_buf implementation. I
thought I
Also the data_offset field (and bytes_used field) only get copied
from the v4l2_buffer into the vb2_buffer struct if the buffer is an
output buffer.
Rebecca
On Mon, Jun 4, 2012 at 1:46 PM, Rebecca Schultz Zavin
rebe...@android.com wrote:
I'm trying to do it in my drivier, but I'm not sure how
into the same buffer, to use dma_buf.
Looks like I need to dig a bit deeper.
Thanks,
Rebecca
On Mon, Jun 4, 2012 at 2:58 PM, Hans Verkuil hverk...@xs4all.nl wrote:
Hi Rebecca,
On Mon June 4 2012 21:34:23 Rebecca Schultz Zavin wrote:
I have a system where the data is planar, but the kernel
that need to manually fake coherency.
Cc: Rob Clark rob.cl...@linaro.org
Cc: Rebecca Schultz Zavin rebe...@android.com
Signed-Off-by: Daniel Vetter daniel.vet...@ffwll.ch
---
Documentation/dma-buf-sharing.txt | 98
++---
drivers/base/dma-buf.c
On Wed, Mar 21, 2012 at 8:45 AM, Rob Clark rob.cl...@linaro.org wrote:
On Tue, Mar 20, 2012 at 3:53 PM, Daniel Vetter daniel.vet...@ffwll.ch wrote:
Let's have some competition here for dma_buf mmap support ;-)
Compared to Rob Clarke's RFC I've ditched the prepare/finish hooks
and
On Wed, Mar 21, 2012 at 3:25 PM, Daniel Vetter dan...@ffwll.ch wrote:
On Wed, Mar 21, 2012 at 10:46:14AM -0700, Rebecca Schultz Zavin wrote:
I want to make sure I understand how this would work. I've been planning
on making cache maintenance implicit, and most of the corresponding
userspace
