Media bus configuration flags and media bus type were so far a property
of each VIN instance, as the subdevice they were connected to was
immutable during the whole system life time.
With the forth-coming introduction of parallel input devices support,
a VIN instance can have the subdevice it is connected to switched at
runtime, from a CSI-2 subdevice to a parallel one and viceversa, through
the modification of links between media entities in the media controller
graph. To avoid discarding the per-subdevice configuration flags retrieved by
v4l2_fwnode parsing facilities, cache them in the 'rvin_graph_entity'
member of each VIN instance, opportunely renamed to 'rvin_parallel_entity'.
Also modify the register configuration function to take mbus flags into
account when running on a bus type that supports them.
The media bus type currently in use will be updated in a follow-up patch
to the link state change notification function.
Signed-off-by: Jacopo Mondi <jacopo+rene...@jmondi.org>
---
drivers/media/platform/rcar-vin/rcar-core.c | 21 ++++++++-----------
drivers/media/platform/rcar-vin/rcar-dma.c | 32 +++++++++++++++++++----------
drivers/media/platform/rcar-vin/rcar-vin.h | 22 ++++++++++++++------
3 files changed, 45 insertions(+), 30 deletions(-)
diff --git a/drivers/media/platform/rcar-vin/rcar-core.c
b/drivers/media/platform/rcar-vin/rcar-core.c
index d3aadf3..a799684 100644
--- a/drivers/media/platform/rcar-vin/rcar-core.c
+++ b/drivers/media/platform/rcar-vin/rcar-core.c
@@ -526,30 +526,29 @@ static int rvin_parallel_parse_v4l2(struct device *dev,
struct v4l2_async_subdev *asd)
{
struct rvin_dev *vin = dev_get_drvdata(dev);
- struct rvin_graph_entity *rvge =
- container_of(asd, struct rvin_graph_entity, asd);
+ struct rvin_parallel_entity *rvpe =
+ container_of(asd, struct rvin_parallel_entity, asd);
if (vep->base.port || vep->base.id)
return -ENOTCONN;
- vin->mbus_cfg.type = vep->bus_type;
+ vin->parallel = rvpe;
+ vin->parallel->mbus_type = vep->bus_type;
- switch (vin->mbus_cfg.type) {
+ switch (vin->parallel->mbus_type) {
case V4L2_MBUS_PARALLEL:
vin_dbg(vin, "Found PARALLEL media bus\n");
- vin->mbus_cfg.flags = vep->bus.parallel.flags;
+ vin->parallel->mbus_flags = vep->bus.parallel.flags;
break;
case V4L2_MBUS_BT656:
vin_dbg(vin, "Found BT656 media bus\n");
- vin->mbus_cfg.flags = 0;
+ vin->parallel->mbus_flags = 0;
break;
default:
vin_err(vin, "Unknown media bus type\n");
return -EINVAL;
}
- vin->parallel = rvge;
-
return 0;
}
@@ -559,7 +558,7 @@ static int rvin_parallel_graph_init(struct rvin_dev *vin)
ret = v4l2_async_notifier_parse_fwnode_endpoints(
vin->dev, &vin->notifier,
- sizeof(struct rvin_graph_entity), rvin_parallel_parse_v4l2);
+ sizeof(struct rvin_parallel_entity), rvin_parallel_parse_v4l2);
if (ret)
return ret;
@@ -785,10 +784,6 @@ static int rvin_mc_init(struct rvin_dev *vin)
{
int ret;
- /* All our sources are CSI-2 */
- vin->mbus_cfg.type = V4L2_MBUS_CSI2;
- vin->mbus_cfg.flags = 0;
-
vin->pad.flags = MEDIA_PAD_FL_SINK;
ret = media_entity_pads_init(&vin->vdev.entity, 1, &vin->pad);
if (ret)
diff --git a/drivers/media/platform/rcar-vin/rcar-dma.c
b/drivers/media/platform/rcar-vin/rcar-dma.c
index f1c3585..d2b7002 100644
--- a/drivers/media/platform/rcar-vin/rcar-dma.c
+++ b/drivers/media/platform/rcar-vin/rcar-dma.c
@@ -659,8 +659,12 @@ static int rvin_setup(struct rvin_dev *vin)
break;
case MEDIA_BUS_FMT_UYVY8_2X8:
/* BT.656 8bit YCbCr422 or BT.601 8bit YCbCr422 */
- vnmc |= vin->mbus_cfg.type == V4L2_MBUS_BT656 ?
- VNMC_INF_YUV8_BT656 : VNMC_INF_YUV8_BT601;
+ if (!vin->is_csi &&
+ vin->parallel->mbus_type == V4L2_MBUS_BT656)
+ vnmc |= VNMC_INF_YUV8_BT656;
+ else
+ vnmc |= VNMC_INF_YUV8_BT601;
+
input_is_yuv = true;
break;
case MEDIA_BUS_FMT_RGB888_1X24:
@@ -668,8 +672,12 @@ static int rvin_setup(struct rvin_dev *vin)
break;
case MEDIA_BUS_FMT_UYVY10_2X10:
/* BT.656 10bit YCbCr422 or BT.601 10bit YCbCr422 */
- vnmc |= vin->mbus_cfg.type == V4L2_MBUS_BT656 ?
- VNMC_INF_YUV10_BT656 : VNMC_INF_YUV10_BT601;
+ if (!vin->is_csi &&
+ vin->parallel->mbus_type == V4L2_MBUS_BT656)
+ vnmc |= VNMC_INF_YUV10_BT656;
+ else
+ vnmc |= VNMC_INF_YUV10_BT601;
+
input_is_yuv = true;
break;
default:
@@ -682,13 +690,15 @@ static int rvin_setup(struct rvin_dev *vin)
else
dmr2 = VNDMR2_FTEV | VNDMR2_VLV(1);
- /* Hsync Signal Polarity Select */
- if (!(vin->mbus_cfg.flags & V4L2_MBUS_HSYNC_ACTIVE_LOW))
- dmr2 |= VNDMR2_HPS;
+ if (!vin->is_csi) {
+ /* Hsync Signal Polarity Select */
+ if (!(vin->parallel->mbus_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW))
+ dmr2 |= VNDMR2_HPS;
- /* Vsync Signal Polarity Select */
- if (!(vin->mbus_cfg.flags & V4L2_MBUS_VSYNC_ACTIVE_LOW))
- dmr2 |= VNDMR2_VPS;
+ /* Vsync Signal Polarity Select */
+ if (!(vin->parallel->mbus_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW))
+ dmr2 |= VNDMR2_VPS;
+ }
/*
* Output format
@@ -734,7 +744,7 @@ static int rvin_setup(struct rvin_dev *vin)
if (vin->info->model == RCAR_GEN3) {
/* Select between CSI-2 and parallel input */
- if (vin->mbus_cfg.type == V4L2_MBUS_CSI2)
+ if (vin->is_csi)
vnmc &= ~VNMC_DPINE;
else
vnmc |= VNMC_DPINE;
diff --git a/drivers/media/platform/rcar-vin/rcar-vin.h
b/drivers/media/platform/rcar-vin/rcar-vin.h
index ebb480f7..8bc3704 100644
--- a/drivers/media/platform/rcar-vin/rcar-vin.h
+++ b/drivers/media/platform/rcar-vin/rcar-vin.h
@@ -73,16 +73,22 @@ struct rvin_video_format {
};
/**
- * struct rvin_graph_entity - Video endpoint from async framework
+ * struct rvin_parallel_entity - Parallel video input endpoint descriptor
* @asd: sub-device descriptor for async framework
* @subdev: subdevice matched using async framework
+ * @mbus_type: media bus type
+ * @mbus_flags: media bus configuration flags
* @source_pad: source pad of remote subdevice
* @sink_pad: sink pad of remote subdevice
+ *
*/
-struct rvin_graph_entity {
+struct rvin_parallel_entity {
struct v4l2_async_subdev asd;
struct v4l2_subdev *subdev;
+ enum v4l2_mbus_type mbus_type;
+ unsigned int mbus_flags;
+
unsigned int source_pad;
unsigned int sink_pad;
};
@@ -146,7 +152,8 @@ struct rvin_info {
* @v4l2_dev: V4L2 device
* @ctrl_handler: V4L2 control handler
* @notifier: V4L2 asynchronous subdevs notifier
- * @parallel: entity in the DT for local parallel subdevice
+ *
+ * @parallel: parallel input subdevice descriptor
*
* @group: Gen3 CSI group
* @id: Gen3 group id for this VIN
@@ -164,7 +171,8 @@ struct rvin_info {
* @sequence: V4L2 buffers sequence number
* @state: keeps track of operation state
*
- * @mbus_cfg: media bus configuration from DT
+ * @is_csi: flag to mark the VIN as using a CSI-2 subdevice
+ *
* @mbus_code: media bus format code
* @format: active V4L2 pixel format
*
@@ -182,7 +190,8 @@ struct rvin_dev {
struct v4l2_device v4l2_dev;
struct v4l2_ctrl_handler ctrl_handler;
struct v4l2_async_notifier notifier;
- struct rvin_graph_entity *parallel;
+
+ struct rvin_parallel_entity *parallel;
struct rvin_group *group;
unsigned int id;
@@ -199,7 +208,8 @@ struct rvin_dev {
unsigned int sequence;
enum rvin_dma_state state;
- struct v4l2_mbus_config mbus_cfg;
+ bool is_csi;
+
u32 mbus_code;
struct v4l2_pix_format format;
--
2.7.4
