linux-toradex.git/drivers/gpu/ipu-v3, branch v4.9.16

gpu: ipu-v3: Use ERR_CAST instead of ERR_PTR(PTR_ERR())

2016-10-17T06:21:53+00:00

Use ERR_CAST inlined function instead of ERR_PTR(PTR_ERR(...)).

Generated by: scripts/coccinelle/api/err_cast.cocci

Signed-off-by: Wei Yongjun 
Signed-off-by: Philipp Zabel

gpu: ipu-v3: Add queued image conversion support

2016-09-19T06:30:27+00:00

This patch implements image conversion support using the IC tasks, with
tiling to support scaling to and from images up to 4096x4096. Image
rotation is also supported. Image conversion requests are added to
a run queue under the IC tasks.

The internal API is subsystem agnostic (no V4L2 dependency except
for the use of V4L2 fourcc pixel formats).

Callers prepare for image conversion by calling
ipu_image_convert_prepare(), which initializes the parameters of
the conversion. The caller passes in the ipu and IC task to use for
the conversion, the input and output image formats, a rotation mode,
and a completion callback and completion context pointer:

struct ipu_image_converter_ctx *
ipu_image_convert_prepare(struct ipu_soc *ipu, enum ipu_ic_task ic_task,
                          struct ipu_image *in, struct ipu_image *out,
                          enum ipu_rotate_mode rot_mode,
                          ipu_image_converter_cb_t complete,
                          void *complete_context);

A new conversion context is created that is added to an IC task
context queue. The caller is given the new conversion context,
which can then be passed to the further APIs:

int ipu_image_convert_queue(struct ipu_image_converter_run *run);

This queues the given image conversion request run to a run queue,
and starts the conversion immediately if the run queue is empty. Only
the physaddr's of the input and output image buffers are needed,
since the conversion context was created previously with
ipu_image_convert_prepare(). When the conversion completes, the run
pointer is returned to the completion callback.

void ipu_image_convert_abort(struct ipu_image_converter_ctx *ctx);

This will abort any active or pending conversions for this context.
Any currently active or pending runs belonging to this context are
returned via the completion callback with an error status.

void ipu_image_convert_unprepare(struct ipu_image_converter_ctx *ctx);

Unprepares the conversion context. Any active or pending runs will
be aborted by calling ipu_image_convert_abort().

Signed-off-by: Steve Longerbeam 
Signed-off-by: Philipp Zabel

gpu: ipu-v3: Add ipu_rot_mode_is_irt()

2016-09-19T06:30:14+00:00

Add a macro that returns boolean true if the given ipu_rotate_mode
requires the use of the Image Rotator.

Signed-off-by: Steve Longerbeam 
Signed-off-by: Philipp Zabel

gpu: ipu-v3: fix a possible NULL dereference

2016-09-19T06:30:10+00:00

of_match_device could return NULL, and so cause a NULL pointer
dereference later.

For fixing this problem, we use of_device_get_match_data(), this will
simplify the code a little by using a standard function for
getting the match data.

Testing the return value of of_device_get_match_data is also necessary
for avoiding a second NULL deref later on devtype.

Signed-off-by: LABBE Corentin 
Signed-off-by: Philipp Zabel

gpu: ipu-v3: Add FSU channel linking support

2016-08-29T14:30:23+00:00

Adds functions to link and unlink source channels to sink
channels in the FSU:

int ipu_fsu_link(struct ipu_soc *ipu, int src_ch, int sink_ch);
int ipu_fsu_unlink(struct ipu_soc *ipu, int src_ch, int sink_ch);

The channels numbers are usually IDMAC channels, but they can also be
channels that do not transfer data to or from memory. The following
convenience functions can be used in place of ipu_fsu_link/unlink()
when both source and sink channels are IDMAC channels:

int ipu_idmac_link(struct ipuv3_channel *src, struct ipuv3_channel *sink);
int ipu_idmac_unlink(struct ipuv3_channel *src, struct ipuv3_channel *sink);

So far the following links are supported:

IPUV3_CHANNEL_IC_PRP_ENC_MEM -> IPUV3_CHANNEL_MEM_ROT_ENC
PUV3_CHANNEL_IC_PRP_VF_MEM   -> IPUV3_CHANNEL_MEM_ROT_VF
IPUV3_CHANNEL_IC_PP_MEM      -> IPUV3_CHANNEL_MEM_ROT_PP
IPUV3_CHANNEL_CSI_DIRECT     -> IPUV3_CHANNEL_CSI_VDI_PREV

More links can be added to the fsu_link_info[] array.

Signed-off-by: Steve Longerbeam 
Signed-off-by: Philipp Zabel

gpu: ipu-v3: Add Video Deinterlacer unit

2016-08-29T14:30:11+00:00

Adds the Video Deinterlacer (VDIC) unit.

Signed-off-by: Steve Longerbeam 
Signed-off-by: Philipp Zabel

gpu: ipu-v3: Do not wait for DMFC FIFO to clear when disabling DMFC channel

2016-08-29T10:45:05+00:00

According to basic tests, it looks there is no issue if we don't wait for
DMFC FIFO to clear when disabling DMFC channel.  NXP BSP doesn't do that,
either.  This patch is needed to avoid the annoying warning caused by a
timeout on waiting for the FIFO to clear after we add the new
DRM_PLANE_COMMIT_NO_DISABLE_AFTER_MODESET flag to the imx-drm driver
which changes the procedure to disable display channel slightly.

Cc: Philipp Zabel 
Cc: David Airlie 
Cc: Russell King 
Cc: Peter Senna Tschudin 
Cc: Lucas Stach 
Cc: Daniel Vetter 
Signed-off-by: Liu Ying 
Signed-off-by: Philipp Zabel

gpu: ipu-v3: rename CSI client device

2016-08-08T09:44:20+00:00

Rename the CSI client device in the client_reg[] table to
"imx-ipuv3-csi".

Signed-off-by: Steve Longerbeam 
Signed-off-by: Philipp Zabel

gpu: ipu-v3: Fix IRT usage

2016-08-08T09:44:20+00:00

There can be multiple IC tasks using the IRT, so the IRT needs
a separate use counter. Create a private ipu_irt_enable() to
enable the IRT module when any IC task requires rotation, and
ipu_irt_disable() when a task no longer needs the IRT.

Signed-off-by: Steve Longerbeam 
Signed-off-by: Philipp Zabel

gpu: ipu-v3: Fix CSI data format for 16-bit media bus formats

2016-08-08T09:44:20+00:00

The CSI data format was being programmed incorrectly for the
1x16 media bus formats. The CSI data format for 16-bit must
be bayer/generic (CSI_SENS_CONF_DATA_FMT_BAYER).

Suggested-by: Carsten Resch 
Signed-off-by: Steve Longerbeam 
Signed-off-by: Philipp Zabel