On Fri Oct 18 14:34:29 2024 +0100, Lad Prabhakar wrote:
> The RZ/G2L CRU needs to configure the ICnMC.VCSEL bits to specify which
> virtual channel should be processed from the four available VCs. To
> retrieve this information from the connected subdevice, the
> .get_frame_desc() function is called.
>
> Signed-off-by: Lad Prabhakar <[email protected]>
> Reviewed-by: Laurent Pinchart <[email protected]>
> Link:
> https://lore.kernel.org/r/[email protected]
> Signed-off-by: Laurent Pinchart <[email protected]>
> Signed-off-by: Hans Verkuil <[email protected]>
Patch committed.
Thanks,
Hans Verkuil
.../media/platform/renesas/rzg2l-cru/rzg2l-cru.h | 5 ++++
.../media/platform/renesas/rzg2l-cru/rzg2l-ip.c | 5 ----
.../media/platform/renesas/rzg2l-cru/rzg2l-video.c | 34 ++++++++++++++++++++++
3 files changed, 39 insertions(+), 5 deletions(-)
---
diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h
b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h
index 174760239548..8fbd45c43763 100644
--- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h
+++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h
@@ -31,6 +31,11 @@
#define RZG2L_CRU_MIN_INPUT_HEIGHT 240
#define RZG2L_CRU_MAX_INPUT_HEIGHT 4095
+enum rzg2l_csi2_pads {
+ RZG2L_CRU_IP_SINK = 0,
+ RZG2L_CRU_IP_SOURCE,
+};
+
/**
* enum rzg2l_cru_dma_state - DMA states
* @RZG2L_CRU_DMA_STOPPED: No operation in progress
diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-ip.c
b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-ip.c
index 700d8b704689..aee7d4ba70b0 100644
--- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-ip.c
+++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-ip.c
@@ -18,11 +18,6 @@ static const struct rzg2l_cru_ip_format
rzg2l_cru_ip_formats[] = {
{ .code = MEDIA_BUS_FMT_UYVY8_1X16, .datatype = 0x1e, .bpp = 16 },
};
-enum rzg2l_csi2_pads {
- RZG2L_CRU_IP_SINK = 0,
- RZG2L_CRU_IP_SOURCE,
-};
-
static const struct rzg2l_cru_ip_format *rzg2l_cru_ip_code_to_fmt(unsigned int
code)
{
unsigned int i;
diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
index bbf4674f888d..7cd33eb1939c 100644
--- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
+++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
@@ -433,12 +433,46 @@ void rzg2l_cru_stop_image_processing(struct rzg2l_cru_dev
*cru)
spin_unlock_irqrestore(&cru->qlock, flags);
}
+static int rzg2l_cru_get_virtual_channel(struct rzg2l_cru_dev *cru)
+{
+ struct v4l2_mbus_frame_desc fd = { };
+ struct media_pad *remote_pad;
+ int ret;
+
+ remote_pad =
media_pad_remote_pad_unique(&cru->ip.pads[RZG2L_CRU_IP_SINK]);
+ ret = v4l2_subdev_call(cru->ip.remote, pad, get_frame_desc,
remote_pad->index, &fd);
+ if (ret < 0 && ret != -ENOIOCTLCMD) {
+ dev_err(cru->dev, "get_frame_desc failed on IP remote
subdev\n");
+ return ret;
+ }
+ /* If remote subdev does not implement .get_frame_desc default to VC0.
*/
+ if (ret == -ENOIOCTLCMD)
+ return 0;
+
+ if (fd.type != V4L2_MBUS_FRAME_DESC_TYPE_CSI2) {
+ dev_err(cru->dev, "get_frame_desc returned invalid bus type
%d\n", fd.type);
+ return -EINVAL;
+ }
+
+ if (!fd.num_entries) {
+ dev_err(cru->dev, "get_frame_desc returned zero entries\n");
+ return -EINVAL;
+ }
+
+ return fd.entry[0].bus.csi2.vc;
+}
+
int rzg2l_cru_start_image_processing(struct rzg2l_cru_dev *cru)
{
struct v4l2_mbus_framefmt *fmt = rzg2l_cru_ip_get_src_fmt(cru);
unsigned long flags;
int ret;
+ ret = rzg2l_cru_get_virtual_channel(cru);
+ if (ret < 0)
+ return ret;
+ cru->csi.channel = ret;
+
spin_lock_irqsave(&cru->qlock, flags);
/* Select a video input */
