[PATCH v6 3/3] media: ti: cal: Add streams support

From: Tomi Valkeinen
Date: Mon Mar 24 2025 - 05:31:36 EST

Add multiplexed streams support. CAL has 8 DMA-engines and can capture 8
separate streams at the same time. The driver filters the streams based
on CSI-2 virtual channel number and datatype. CAL may have (depending on
the SoC) two CSI-2 RX blocks, which share the 8 DMA-engines, so the
number of capturable streams does not change even if there are two CSI-2
RX blocks.

Add 8 video device nodes, each representing a single DMA-engine, and set
the number of source pads on CSI-2 RX blocks to 8. Each video node can be
connected to any of the source pads on either of the CSI-2 RX instances
using media links. CSI-2 RX block's subdevice internal routing is used
to route the incoming CSI-2 streams to one of the 8 source pads.

Only video data streams are supported at the moment.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx>
Reviewed-by: Jacopo Mondi <jacopo.mondi@xxxxxxxxxxxxxxxx>
---
drivers/media/platform/ti/cal/cal-camerarx.c | 271 +++++++++++++++++++++------
drivers/media/platform/ti/cal/cal-video.c | 127 ++++++++++---
drivers/media/platform/ti/cal/cal.c | 45 +++--
drivers/media/platform/ti/cal/cal.h | 3 +-
4 files changed, 340 insertions(+), 106 deletions(-)

diff --git a/drivers/media/platform/ti/cal/cal-camerarx.c b/drivers/media/platform/ti/cal/cal-camerarx.c
index 42dfe08b765f..9d8aefdeb430 100644
--- a/drivers/media/platform/ti/cal/cal-camerarx.c
+++ b/drivers/media/platform/ti/cal/cal-camerarx.c
@@ -49,21 +49,38 @@ static s64 cal_camerarx_get_ext_link_freq(struct cal_camerarx *phy)
{
struct v4l2_mbus_config_mipi_csi2 *mipi_csi2 = &phy->endpoint.bus.mipi_csi2;
u32 num_lanes = mipi_csi2->num_data_lanes;
- const struct cal_format_info *fmtinfo;
struct v4l2_subdev_state *state;
- struct v4l2_mbus_framefmt *fmt;
u32 bpp;
s64 freq;

+ /*
+ * v4l2_get_link_freq() uses V4L2_CID_LINK_FREQ first, and falls back
+ * to V4L2_CID_PIXEL_RATE if V4L2_CID_LINK_FREQ is not available.
+ *
+ * With multistream input there is no single pixel rate, and thus we
+ * cannot use V4L2_CID_PIXEL_RATE, so we pass 0 as the bpp which
+ * causes v4l2_get_link_freq() to return an error if it falls back to
+ * V4L2_CID_PIXEL_RATE.
+ */
+
state = v4l2_subdev_get_locked_active_state(&phy->subdev);

- fmt = v4l2_subdev_state_get_format(state, CAL_CAMERARX_PAD_SINK);
+ if (state->routing.num_routes > 1) {
+ bpp = 0;
+ } else {
+ struct v4l2_subdev_route *route = &state->routing.routes[0];
+ const struct cal_format_info *fmtinfo;
+ struct v4l2_mbus_framefmt *fmt;

- fmtinfo = cal_format_by_code(fmt->code);
- if (!fmtinfo)
- return -EINVAL;
+ fmt = v4l2_subdev_state_get_format(state,
+ route->sink_pad, route->sink_stream);
+
+ fmtinfo = cal_format_by_code(fmt->code);
+ if (!fmtinfo)
+ return -EINVAL;

- bpp = fmtinfo->bpp;
+ bpp = fmtinfo->bpp;
+ }

freq = v4l2_get_link_freq(phy->source->ctrl_handler, bpp, 2 * num_lanes);
if (freq < 0) {
@@ -284,15 +301,32 @@ static void cal_camerarx_ppi_disable(struct cal_camerarx *phy)
0, CAL_CSI2_PPI_CTRL_IF_EN_MASK);
}

-static int cal_camerarx_start(struct cal_camerarx *phy)
+static int cal_camerarx_start(struct cal_camerarx *phy, u32 sink_stream)
{
+ struct media_pad *remote_pad;
s64 link_freq;
u32 sscounter;
u32 val;
int ret;

+ remote_pad = media_pad_remote_pad_first(&phy->pads[CAL_CAMERARX_PAD_SINK]);
+
+ /*
+ * We need to enable the PHY hardware when enabling the first stream,
+ * but for the following streams we just propagate the enable_streams
+ * to the source.
+ */
+
if (phy->enable_count > 0) {
+ ret = v4l2_subdev_enable_streams(phy->source, remote_pad->index,
+ BIT(sink_stream));
+ if (ret) {
+ phy_err(phy, "enable streams failed in source: %d\n", ret);
+ return ret;
+ }
+
phy->enable_count++;
+
return 0;
}

@@ -394,7 +428,8 @@ static int cal_camerarx_start(struct cal_camerarx *phy)
* Start the source to enable the CSI-2 HS clock. We can now wait for
* CSI-2 PHY reset to complete.
*/
- ret = v4l2_subdev_call(phy->source, video, s_stream, 1);
+ ret = v4l2_subdev_enable_streams(phy->source, remote_pad->index,
+ BIT(sink_stream));
if (ret) {
v4l2_subdev_call(phy->source, core, s_power, 0);
cal_camerarx_disable_irqs(phy);
@@ -425,12 +460,22 @@ static int cal_camerarx_start(struct cal_camerarx *phy)
return 0;
}

-static void cal_camerarx_stop(struct cal_camerarx *phy)
+static void cal_camerarx_stop(struct cal_camerarx *phy, u32 sink_stream)
{
+ struct media_pad *remote_pad;
int ret;

- if (--phy->enable_count > 0)
+ remote_pad = media_pad_remote_pad_first(&phy->pads[CAL_CAMERARX_PAD_SINK]);
+
+ if (--phy->enable_count > 0) {
+ ret = v4l2_subdev_disable_streams(phy->source,
+ remote_pad->index,
+ BIT(sink_stream));
+ if (ret)
+ phy_err(phy, "stream off failed in subdev\n");
+
return;
+ }

cal_camerarx_ppi_disable(phy);

@@ -450,7 +495,9 @@ static void cal_camerarx_stop(struct cal_camerarx *phy)
/* Disable the phy */
cal_camerarx_disable(phy);

- if (v4l2_subdev_call(phy->source, video, s_stream, 0))
+ ret = v4l2_subdev_disable_streams(phy->source, remote_pad->index,
+ BIT(sink_stream));
+ if (ret)
phy_err(phy, "stream off failed in subdev\n");

ret = v4l2_subdev_call(phy->source, core, s_power, 0);
@@ -599,22 +646,50 @@ static inline struct cal_camerarx *to_cal_camerarx(struct v4l2_subdev *sd)
return container_of(sd, struct cal_camerarx, subdev);
}

-static int cal_camerarx_sd_s_stream(struct v4l2_subdev *sd, int enable)
+struct cal_camerarx *
+cal_camerarx_get_phy_from_entity(struct media_entity *entity)
+{
+ struct v4l2_subdev *sd;
+
+ sd = media_entity_to_v4l2_subdev(entity);
+ if (!sd)
+ return NULL;
+
+ return to_cal_camerarx(sd);
+}
+
+static int cal_camerarx_sd_enable_streams(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ u32 pad, u64 streams_mask)
{
struct cal_camerarx *phy = to_cal_camerarx(sd);
- struct v4l2_subdev_state *state;
- int ret = 0;
+ u32 sink_stream;
+ int ret;

- state = v4l2_subdev_lock_and_get_active_state(sd);
+ ret = v4l2_subdev_routing_find_opposite_end(&state->routing, pad, 0,
+ NULL, &sink_stream);
+ if (ret)
+ return ret;

- if (enable)
- ret = cal_camerarx_start(phy);
- else
- cal_camerarx_stop(phy);
+ return cal_camerarx_start(phy, sink_stream);
+}

- v4l2_subdev_unlock_state(state);
+static int cal_camerarx_sd_disable_streams(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ u32 pad, u64 streams_mask)
+{
+ struct cal_camerarx *phy = to_cal_camerarx(sd);
+ u32 sink_stream;
+ int ret;

- return ret;
+ ret = v4l2_subdev_routing_find_opposite_end(&state->routing, pad, 0,
+ NULL, &sink_stream);
+ if (ret)
+ return ret;
+
+ cal_camerarx_stop(phy, sink_stream);
+
+ return 0;
}

static int cal_camerarx_sd_enum_mbus_code(struct v4l2_subdev *sd,
@@ -628,8 +703,12 @@ static int cal_camerarx_sd_enum_mbus_code(struct v4l2_subdev *sd,
if (code->index > 0)
return -EINVAL;

- fmt = v4l2_subdev_state_get_format(state,
- CAL_CAMERARX_PAD_SINK);
+ fmt = v4l2_subdev_state_get_opposite_stream_format(state,
+ code->pad,
+ code->stream);
+ if (!fmt)
+ return -EINVAL;
+
code->code = fmt->code;
} else {
if (code->index >= cal_num_formats)
@@ -654,8 +733,12 @@ static int cal_camerarx_sd_enum_frame_size(struct v4l2_subdev *sd,
if (cal_rx_pad_is_source(fse->pad)) {
struct v4l2_mbus_framefmt *fmt;

- fmt = v4l2_subdev_state_get_format(state,
- CAL_CAMERARX_PAD_SINK);
+ fmt = v4l2_subdev_state_get_opposite_stream_format(state,
+ fse->pad,
+ fse->stream);
+ if (!fmt)
+ return -EINVAL;
+
if (fse->code != fmt->code)
return -EINVAL;

@@ -711,36 +794,78 @@ static int cal_camerarx_sd_set_fmt(struct v4l2_subdev *sd,

/* Store the format and propagate it to the source pad. */

- fmt = v4l2_subdev_state_get_format(state, CAL_CAMERARX_PAD_SINK);
+ fmt = v4l2_subdev_state_get_format(state, format->pad,
+ format->stream);
+ if (!fmt)
+ return -EINVAL;
+
*fmt = format->format;

- fmt = v4l2_subdev_state_get_format(state,
- CAL_CAMERARX_PAD_FIRST_SOURCE);
+ fmt = v4l2_subdev_state_get_opposite_stream_format(state, format->pad,
+ format->stream);
+ if (!fmt)
+ return -EINVAL;
+
*fmt = format->format;

return 0;
}

+static int cal_camerarx_set_routing(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ struct v4l2_subdev_krouting *routing)
+{
+ static const struct v4l2_mbus_framefmt format = {
+ .width = 640,
+ .height = 480,
+ .code = MEDIA_BUS_FMT_UYVY8_1X16,
+ .field = V4L2_FIELD_NONE,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .ycbcr_enc = V4L2_YCBCR_ENC_601,
+ .quantization = V4L2_QUANTIZATION_LIM_RANGE,
+ .xfer_func = V4L2_XFER_FUNC_SRGB,
+ };
+ int ret;
+
+ ret = v4l2_subdev_routing_validate(sd, routing,
+ V4L2_SUBDEV_ROUTING_ONLY_1_TO_1 |
+ V4L2_SUBDEV_ROUTING_NO_SOURCE_MULTIPLEXING);
+ if (ret)
+ return ret;
+
+ ret = v4l2_subdev_set_routing_with_fmt(sd, state, routing, &format);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int cal_camerarx_sd_set_routing(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ enum v4l2_subdev_format_whence which,
+ struct v4l2_subdev_krouting *routing)
+{
+ return cal_camerarx_set_routing(sd, state, routing);
+}
+
static int cal_camerarx_sd_init_state(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *state)
-{
- struct v4l2_subdev_format format = {
- .which = state ? V4L2_SUBDEV_FORMAT_TRY
- : V4L2_SUBDEV_FORMAT_ACTIVE,
- .pad = CAL_CAMERARX_PAD_SINK,
- .format = {
- .width = 640,
- .height = 480,
- .code = MEDIA_BUS_FMT_UYVY8_1X16,
- .field = V4L2_FIELD_NONE,
- .colorspace = V4L2_COLORSPACE_SRGB,
- .ycbcr_enc = V4L2_YCBCR_ENC_601,
- .quantization = V4L2_QUANTIZATION_LIM_RANGE,
- .xfer_func = V4L2_XFER_FUNC_SRGB,
- },
+ struct v4l2_subdev_state *state)
+{
+ struct v4l2_subdev_route routes[] = { {
+ .sink_pad = 0,
+ .sink_stream = 0,
+ .source_pad = 1,
+ .source_stream = 0,
+ .flags = V4L2_SUBDEV_ROUTE_FL_ACTIVE,
+ } };
+
+ struct v4l2_subdev_krouting routing = {
+ .num_routes = 1,
+ .routes = routes,
};

- return cal_camerarx_sd_set_fmt(sd, state, &format);
+ /* Initialize routing to single route to the fist source pad */
+ return cal_camerarx_set_routing(sd, state, &routing);
}

static int cal_camerarx_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
@@ -749,48 +874,71 @@ static int cal_camerarx_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
struct cal_camerarx *phy = to_cal_camerarx(sd);
struct v4l2_mbus_frame_desc remote_desc;
const struct media_pad *remote_pad;
+ struct v4l2_subdev_state *state;
+ u32 sink_stream;
+ unsigned int i;
int ret;

+ state = v4l2_subdev_lock_and_get_active_state(sd);
+
+ ret = v4l2_subdev_routing_find_opposite_end(&state->routing,
+ pad, 0,
+ NULL, &sink_stream);
+ if (ret)
+ goto out_unlock;
+
remote_pad = media_pad_remote_pad_first(&phy->pads[CAL_CAMERARX_PAD_SINK]);
- if (!remote_pad)
- return -EPIPE;
+ if (!remote_pad) {
+ ret = -EPIPE;
+ goto out_unlock;
+ }

ret = v4l2_subdev_call(phy->source, pad, get_frame_desc,
remote_pad->index, &remote_desc);
if (ret)
- return ret;
+ goto out_unlock;

if (remote_desc.type != V4L2_MBUS_FRAME_DESC_TYPE_CSI2) {
cal_err(phy->cal,
"Frame descriptor does not describe CSI-2 link");
- return -EINVAL;
+ ret = -EINVAL;
+ goto out_unlock;
}

- if (remote_desc.num_entries > 1)
- cal_err(phy->cal,
- "Multiple streams not supported in remote frame descriptor, using the first one\n");
+ for (i = 0; i < remote_desc.num_entries; i++) {
+ if (remote_desc.entry[i].stream == sink_stream)
+ break;
+ }
+
+ if (i == remote_desc.num_entries) {
+ cal_err(phy->cal, "Stream %u not found in remote frame desc\n",
+ sink_stream);
+ ret = -EINVAL;
+ goto out_unlock;
+ }

fd->type = V4L2_MBUS_FRAME_DESC_TYPE_CSI2;
fd->num_entries = 1;
- fd->entry[0] = remote_desc.entry[0];
+ fd->entry[0] = remote_desc.entry[i];

- return 0;
-}
+out_unlock:
+ v4l2_subdev_unlock_state(state);

-static const struct v4l2_subdev_video_ops cal_camerarx_video_ops = {
- .s_stream = cal_camerarx_sd_s_stream,
-};
+ return ret;
+}

static const struct v4l2_subdev_pad_ops cal_camerarx_pad_ops = {
+ .enable_streams = cal_camerarx_sd_enable_streams,
+ .disable_streams = cal_camerarx_sd_disable_streams,
.enum_mbus_code = cal_camerarx_sd_enum_mbus_code,
.enum_frame_size = cal_camerarx_sd_enum_frame_size,
.get_fmt = v4l2_subdev_get_fmt,
.set_fmt = cal_camerarx_sd_set_fmt,
+ .set_routing = cal_camerarx_sd_set_routing,
.get_frame_desc = cal_camerarx_get_frame_desc,
};

static const struct v4l2_subdev_ops cal_camerarx_subdev_ops = {
- .video = &cal_camerarx_video_ops,
.pad = &cal_camerarx_pad_ops,
};

@@ -800,6 +948,7 @@ static const struct v4l2_subdev_internal_ops cal_camerarx_internal_ops = {

static const struct media_entity_operations cal_camerarx_media_ops = {
.link_validate = v4l2_subdev_link_validate,
+ .has_pad_interdep = v4l2_subdev_has_pad_interdep,
};

/* ------------------------------------------------------------------
@@ -851,7 +1000,7 @@ struct cal_camerarx *cal_camerarx_create(struct cal_dev *cal,
v4l2_subdev_init(sd, &cal_camerarx_subdev_ops);
sd->internal_ops = &cal_camerarx_internal_ops;
sd->entity.function = MEDIA_ENT_F_VID_IF_BRIDGE;
- sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
+ sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_STREAMS;
snprintf(sd->name, sizeof(sd->name), "CAMERARX%u", instance);
sd->dev = cal->dev;

diff --git a/drivers/media/platform/ti/cal/cal-video.c b/drivers/media/platform/ti/cal/cal-video.c
index 29c38bf8d7a1..97a14ceaf237 100644
--- a/drivers/media/platform/ti/cal/cal-video.c
+++ b/drivers/media/platform/ti/cal/cal-video.c
@@ -108,9 +108,10 @@ static int __subdev_get_format(struct cal_ctx *ctx,
.pad = 0,
};
struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
+ struct v4l2_subdev *sd = ctx->phy->source;
int ret;

- ret = v4l2_subdev_call(ctx->phy->source, pad, get_fmt, NULL, &sd_fmt);
+ ret = v4l2_subdev_call_state_active(sd, pad, get_fmt, &sd_fmt);
if (ret)
return ret;

@@ -130,11 +131,12 @@ static int __subdev_set_format(struct cal_ctx *ctx,
.pad = 0,
};
struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
+ struct v4l2_subdev *sd = ctx->phy->source;
int ret;

*mbus_fmt = *fmt;

- ret = v4l2_subdev_call(ctx->phy->source, pad, set_fmt, NULL, &sd_fmt);
+ ret = v4l2_subdev_call_state_active(sd, pad, set_fmt, &sd_fmt);
if (ret)
return ret;

@@ -176,6 +178,7 @@ static int cal_legacy_try_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct cal_ctx *ctx = video_drvdata(file);
+ struct v4l2_subdev *sd = ctx->phy->source;
const struct cal_format_info *fmtinfo;
struct v4l2_subdev_frame_size_enum fse = {
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
@@ -201,8 +204,8 @@ static int cal_legacy_try_fmt_vid_cap(struct file *file, void *priv,
for (fse.index = 0; ; fse.index++) {
int ret;

- ret = v4l2_subdev_call(ctx->phy->source, pad, enum_frame_size,
- NULL, &fse);
+ ret = v4l2_subdev_call_state_active(sd, pad, enum_frame_size,
+ &fse);
if (ret)
break;

@@ -238,6 +241,7 @@ static int cal_legacy_s_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct cal_ctx *ctx = video_drvdata(file);
+ struct v4l2_subdev *sd = &ctx->phy->subdev;
struct vb2_queue *q = &ctx->vb_vidq;
struct v4l2_subdev_format sd_fmt = {
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
@@ -277,7 +281,7 @@ static int cal_legacy_s_fmt_vid_cap(struct file *file, void *priv,
ctx->v_fmt.fmt.pix.field = sd_fmt.format.field;
cal_calc_format_size(ctx, fmtinfo, &ctx->v_fmt);

- v4l2_subdev_call(&ctx->phy->subdev, pad, set_fmt, NULL, &sd_fmt);
+ v4l2_subdev_call_state_active(sd, pad, set_fmt, &sd_fmt);

ctx->fmtinfo = fmtinfo;
*f = ctx->v_fmt;
@@ -289,6 +293,7 @@ static int cal_legacy_enum_framesizes(struct file *file, void *fh,
struct v4l2_frmsizeenum *fsize)
{
struct cal_ctx *ctx = video_drvdata(file);
+ struct v4l2_subdev *sd = ctx->phy->source;
const struct cal_format_info *fmtinfo;
struct v4l2_subdev_frame_size_enum fse = {
.index = fsize->index,
@@ -307,8 +312,7 @@ static int cal_legacy_enum_framesizes(struct file *file, void *fh,

fse.code = fmtinfo->code;

- ret = v4l2_subdev_call(ctx->phy->source, pad, enum_frame_size, NULL,
- &fse);
+ ret = v4l2_subdev_call_state_active(sd, pad, enum_frame_size, &fse);
if (ret)
return ret;

@@ -350,6 +354,7 @@ static int cal_legacy_enum_frameintervals(struct file *file, void *priv,
struct v4l2_frmivalenum *fival)
{
struct cal_ctx *ctx = video_drvdata(file);
+ struct v4l2_subdev *sd = ctx->phy->source;
const struct cal_format_info *fmtinfo;
struct v4l2_subdev_frame_interval_enum fie = {
.index = fival->index,
@@ -364,8 +369,8 @@ static int cal_legacy_enum_frameintervals(struct file *file, void *priv,
return -EINVAL;

fie.code = fmtinfo->code;
- ret = v4l2_subdev_call(ctx->phy->source, pad, enum_frame_interval,
- NULL, &fie);
+
+ ret = v4l2_subdev_call_state_active(sd, pad, enum_frame_interval, &fie);
if (ret)
return ret;
fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
@@ -432,6 +437,9 @@ static int cal_mc_enum_fmt_vid_cap(struct file *file, void *priv,
idx = 0;

for (i = 0; i < cal_num_formats; ++i) {
+ if (cal_formats[i].meta)
+ continue;
+
if (f->mbus_code && cal_formats[i].code != f->mbus_code)
continue;

@@ -459,7 +467,7 @@ static void cal_mc_try_fmt(struct cal_ctx *ctx, struct v4l2_format *f,
* supported.
*/
fmtinfo = cal_format_by_fourcc(f->fmt.pix.pixelformat);
- if (!fmtinfo)
+ if (!fmtinfo || fmtinfo->meta)
fmtinfo = &cal_formats[0];

/*
@@ -675,16 +683,16 @@ static int cal_video_check_format(struct cal_ctx *ctx)
{
const struct v4l2_mbus_framefmt *format;
struct v4l2_subdev_state *state;
- struct media_pad *remote_pad;
+ struct media_pad *phy_source_pad;
int ret = 0;

- remote_pad = media_pad_remote_pad_first(&ctx->pad);
- if (!remote_pad)
+ phy_source_pad = media_pad_remote_pad_first(&ctx->pad);
+ if (!phy_source_pad)
return -ENODEV;

state = v4l2_subdev_lock_and_get_active_state(&ctx->phy->subdev);

- format = v4l2_subdev_state_get_format(state, remote_pad->index);
+ format = v4l2_subdev_state_get_format(state, phy_source_pad->index, 0);
if (!format) {
ret = -EINVAL;
goto out;
@@ -707,16 +715,28 @@ static int cal_video_check_format(struct cal_ctx *ctx)
static int cal_start_streaming(struct vb2_queue *vq, unsigned int count)
{
struct cal_ctx *ctx = vb2_get_drv_priv(vq);
+ struct media_pad *phy_source_pad;
struct cal_buffer *buf;
dma_addr_t addr;
int ret;

+ phy_source_pad = media_pad_remote_pad_first(&ctx->pad);
+ if (!phy_source_pad) {
+ ctx_err(ctx, "Context not connected\n");
+ ret = -ENODEV;
+ goto error_release_buffers;
+ }
+
ret = video_device_pipeline_alloc_start(&ctx->vdev);
if (ret < 0) {
ctx_err(ctx, "Failed to start media pipeline: %d\n", ret);
goto error_release_buffers;
}

+ /* Find the PHY connected to this video device */
+ if (cal_mc_api)
+ ctx->phy = cal_camerarx_get_phy_from_entity(phy_source_pad->entity);
+
/*
* Verify that the currently configured format matches the output of
* the connected CAMERARX.
@@ -749,7 +769,8 @@ static int cal_start_streaming(struct vb2_queue *vq, unsigned int count)
cal_ctx_set_dma_addr(ctx, addr);
cal_ctx_start(ctx);

- ret = v4l2_subdev_call(&ctx->phy->subdev, video, s_stream, 1);
+ ret = v4l2_subdev_enable_streams(&ctx->phy->subdev,
+ phy_source_pad->index, BIT(0));
if (ret)
goto error_stop;

@@ -774,10 +795,14 @@ static int cal_start_streaming(struct vb2_queue *vq, unsigned int count)
static void cal_stop_streaming(struct vb2_queue *vq)
{
struct cal_ctx *ctx = vb2_get_drv_priv(vq);
+ struct media_pad *phy_source_pad;

cal_ctx_stop(ctx);

- v4l2_subdev_call(&ctx->phy->subdev, video, s_stream, 0);
+ phy_source_pad = media_pad_remote_pad_first(&ctx->pad);
+
+ v4l2_subdev_disable_streams(&ctx->phy->subdev, phy_source_pad->index,
+ BIT(0));

pm_runtime_put_sync(ctx->cal->dev);

@@ -786,6 +811,9 @@ static void cal_stop_streaming(struct vb2_queue *vq)
cal_release_buffers(ctx, VB2_BUF_STATE_ERROR);

video_device_pipeline_stop(&ctx->vdev);
+
+ if (cal_mc_api)
+ ctx->phy = NULL;
}

static const struct vb2_ops cal_video_qops = {
@@ -812,6 +840,7 @@ static const struct v4l2_file_operations cal_fops = {

static int cal_ctx_v4l2_init_formats(struct cal_ctx *ctx)
{
+ struct v4l2_subdev *sd = ctx->phy->source;
struct v4l2_mbus_framefmt mbus_fmt;
const struct cal_format_info *fmtinfo;
unsigned int i, j, k;
@@ -831,20 +860,20 @@ static int cal_ctx_v4l2_init_formats(struct cal_ctx *ctx)
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
};

- ret = v4l2_subdev_call(ctx->phy->source, pad, enum_mbus_code,
- NULL, &mbus_code);
+ ret = v4l2_subdev_call_state_active(sd, pad, enum_mbus_code,
+ &mbus_code);
if (ret == -EINVAL)
break;

if (ret) {
ctx_err(ctx, "Error enumerating mbus codes in subdev %s: %d\n",
- ctx->phy->source->name, ret);
+ sd->name, ret);
return ret;
}

ctx_dbg(2, ctx,
"subdev %s: code: %04x idx: %u\n",
- ctx->phy->source->name, mbus_code.code, j);
+ sd->name, mbus_code.code, j);

for (k = 0; k < cal_num_formats; k++) {
fmtinfo = &cal_formats[k];
@@ -862,7 +891,7 @@ static int cal_ctx_v4l2_init_formats(struct cal_ctx *ctx)

if (i == 0) {
ctx_err(ctx, "No suitable format reported by subdev %s\n",
- ctx->phy->source->name);
+ sd->name);
return -EINVAL;
}

@@ -948,16 +977,52 @@ int cal_ctx_v4l2_register(struct cal_ctx *ctx)
return ret;
}

- ret = media_create_pad_link(&ctx->phy->subdev.entity,
- CAL_CAMERARX_PAD_FIRST_SOURCE,
- &vfd->entity, 0,
- MEDIA_LNK_FL_IMMUTABLE |
- MEDIA_LNK_FL_ENABLED);
- if (ret) {
- ctx_err(ctx, "Failed to create media link for context %u\n",
- ctx->dma_ctx);
- video_unregister_device(vfd);
- return ret;
+ if (cal_mc_api) {
+ u16 phy_idx;
+ u16 pad_idx;
+
+ /* Create links from all video nodes to all PHYs */
+
+ for (phy_idx = 0; phy_idx < ctx->cal->data->num_csi2_phy;
+ ++phy_idx) {
+ struct media_entity *phy_entity =
+ &ctx->cal->phy[phy_idx]->subdev.entity;
+
+ for (pad_idx = 1; pad_idx < CAL_CAMERARX_NUM_PADS;
+ ++pad_idx) {
+ /*
+ * Enable only links from video0 to PHY0 pad 1,
+ * and video1 to PHY1 pad 1.
+ */
+ bool enable = (ctx->dma_ctx == 0 &&
+ phy_idx == 0 && pad_idx == 1) ||
+ (ctx->dma_ctx == 1 &&
+ phy_idx == 1 && pad_idx == 1);
+
+ ret = media_create_pad_link(phy_entity, pad_idx,
+ &vfd->entity, 0,
+ enable ? MEDIA_LNK_FL_ENABLED : 0);
+ if (ret) {
+ ctx_err(ctx,
+ "Failed to create media link for context %u\n",
+ ctx->dma_ctx);
+ video_unregister_device(vfd);
+ return ret;
+ }
+ }
+ }
+ } else {
+ ret = media_create_pad_link(&ctx->phy->subdev.entity,
+ CAL_CAMERARX_PAD_FIRST_SOURCE,
+ &vfd->entity, 0,
+ MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED);
+ if (ret) {
+ ctx_err(ctx,
+ "Failed to create media link for context %u\n",
+ ctx->dma_ctx);
+ video_unregister_device(vfd);
+ return ret;
+ }
}

ctx_info(ctx, "V4L2 device registered as %s\n",
diff --git a/drivers/media/platform/ti/cal/cal.c b/drivers/media/platform/ti/cal/cal.c
index 4bd2092e0255..9389c444400e 100644
--- a/drivers/media/platform/ti/cal/cal.c
+++ b/drivers/media/platform/ti/cal/cal.c
@@ -481,8 +481,9 @@ int cal_ctx_prepare(struct cal_ctx *ctx)
ctx->vc = 0;
ctx->datatype = CAL_CSI2_CTX_DT_ANY;
} else if (!ret) {
- ctx_dbg(2, ctx, "Framedesc: len %u, vc %u, dt %#x\n",
- entry.length, entry.bus.csi2.vc, entry.bus.csi2.dt);
+ ctx_dbg(2, ctx, "Framedesc: stream %u, len %u, vc %u, dt %#x\n",
+ entry.stream, entry.length, entry.bus.csi2.vc,
+ entry.bus.csi2.dt);

ctx->vc = entry.bus.csi2.vc;
ctx->datatype = entry.bus.csi2.dt;
@@ -490,7 +491,7 @@ int cal_ctx_prepare(struct cal_ctx *ctx)
return ret;
}

- ctx->use_pix_proc = !ctx->fmtinfo->meta;
+ ctx->use_pix_proc = ctx->vb_vidq.type == V4L2_BUF_TYPE_VIDEO_CAPTURE;

if (ctx->use_pix_proc) {
ret = cal_reserve_pix_proc(ctx->cal);
@@ -1014,7 +1015,6 @@ static struct cal_ctx *cal_ctx_create(struct cal_dev *cal, int inst)
return NULL;

ctx->cal = cal;
- ctx->phy = cal->phy[inst];
ctx->dma_ctx = inst;
ctx->csi2_ctx = inst;
ctx->cport = inst;
@@ -1226,18 +1226,37 @@ static int cal_probe(struct platform_device *pdev)
}

/* Create contexts. */
- for (i = 0; i < cal->data->num_csi2_phy; ++i) {
- if (!cal->phy[i]->source_node)
- continue;
+ if (!cal_mc_api) {
+ for (i = 0; i < cal->data->num_csi2_phy; ++i) {
+ struct cal_ctx *ctx;
+
+ if (!cal->phy[i]->source_node)
+ continue;
+
+ ctx = cal_ctx_create(cal, i);
+ if (!ctx) {
+ cal_err(cal, "Failed to create context %u\n", cal->num_contexts);
+ ret = -ENODEV;
+ goto error_context;
+ }
+
+ ctx->phy = cal->phy[i];

- cal->ctx[cal->num_contexts] = cal_ctx_create(cal, i);
- if (!cal->ctx[cal->num_contexts]) {
- cal_err(cal, "Failed to create context %u\n", cal->num_contexts);
- ret = -ENODEV;
- goto error_context;
+ cal->ctx[cal->num_contexts++] = ctx;
}
+ } else {
+ for (i = 0; i < ARRAY_SIZE(cal->ctx); ++i) {
+ struct cal_ctx *ctx;
+
+ ctx = cal_ctx_create(cal, i);
+ if (!ctx) {
+ cal_err(cal, "Failed to create context %u\n", i);
+ ret = -ENODEV;
+ goto error_context;
+ }

- cal->num_contexts++;
+ cal->ctx[cal->num_contexts++] = ctx;
+ }
}

/* Register the media device. */
diff --git a/drivers/media/platform/ti/cal/cal.h b/drivers/media/platform/ti/cal/cal.h
index 0856297adc0b..44ee0bece56e 100644
--- a/drivers/media/platform/ti/cal/cal.h
+++ b/drivers/media/platform/ti/cal/cal.h
@@ -45,7 +45,7 @@

#define CAL_CAMERARX_PAD_SINK 0
#define CAL_CAMERARX_PAD_FIRST_SOURCE 1
-#define CAL_CAMERARX_NUM_SOURCE_PADS 1
+#define CAL_CAMERARX_NUM_SOURCE_PADS 8
#define CAL_CAMERARX_NUM_PADS (1 + CAL_CAMERARX_NUM_SOURCE_PADS)

static inline bool cal_rx_pad_is_sink(u32 pad)
@@ -319,6 +319,7 @@ const struct cal_format_info *cal_format_by_code(u32 code);

void cal_quickdump_regs(struct cal_dev *cal);

+struct cal_camerarx *cal_camerarx_get_phy_from_entity(struct media_entity *entity);
void cal_camerarx_disable(struct cal_camerarx *phy);
void cal_camerarx_i913_errata(struct cal_camerarx *phy);
struct cal_camerarx *cal_camerarx_create(struct cal_dev *cal,

--
2.43.0