From: Jai Luthra <j-luthra@ti.com>
To: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Sakari Ailus <sakari.ailus@linux.intel.com>,
Hans Verkuil <hverkuil-cisco@xs4all.nl>,
Vaishnav Achath <vaishnav.a@ti.com>,
Maxime Ripard <mripard@kernel.org>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>
Cc: <linux-media@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<devicetree@vger.kernel.org>,
Vignesh Raghavendra <vigneshr@ti.com>,
Aradhya Bhatia <a-bhatia1@ti.com>,
Devarsh Thakkar <devarsht@ti.com>,
Changhuang Liang <changhuang.liang@starfivetech.com>,
Jack Zhu <jack.zhu@starfivetech.com>,
Julien Massot <julien.massot@collabora.com>,
Jayshri Pawar <jpawar@cadence.com>, Jai Luthra <j-luthra@ti.com>
Subject: [PATCH RFC 12/21] media: ti: j721e-csi2rx: add support for processing virtual channels
Date: Thu, 22 Feb 2024 17:01:28 +0530 [thread overview]
Message-ID: <20240222-multistream-v1-12-1837ed916eeb@ti.com> (raw)
In-Reply-To: <20240222-multistream-v1-0-1837ed916eeb@ti.com>
Use get_frame_desc() to get the frame desc from the connected source,
and use the provided virtual channel instead of hardcoded one.
get_frame_desc() works per stream, but as we don't support multiple
streams yet, we will just always use stream 0. If the source doesn't
support get_frame_desc(), fall back to the previous method of always
capturing virtual channel 0.
Co-developed-by: Pratyush Yadav <p.yadav@ti.com>
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Signed-off-by: Jai Luthra <j-luthra@ti.com>
---
.../media/platform/ti/j721e-csi2rx/j721e-csi2rx.c | 39 ++++++++++++++++++++++
1 file changed, 39 insertions(+)
diff --git a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
index f6045888eed0..4be8a306ac1f 100644
--- a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
+++ b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
@@ -29,6 +29,7 @@
#define SHIM_DMACNTX_EN BIT(31)
#define SHIM_DMACNTX_YUV422 GENMASK(27, 26)
#define SHIM_DMACNTX_SIZE GENMASK(21, 20)
+#define SHIM_DMACNTX_VC GENMASK(9, 6)
#define SHIM_DMACNTX_FMT GENMASK(5, 0)
#define SHIM_DMACNTX_YUV422_MODE_11 3
#define SHIM_DMACNTX_SIZE_8 0
@@ -105,6 +106,8 @@ struct ti_csi2rx_ctx {
struct media_pad pad;
u32 sequence;
u32 idx;
+ u32 vc;
+ u32 stream;
};
struct ti_csi2rx_dev {
@@ -595,6 +598,7 @@ static void ti_csi2rx_setup_shim(struct ti_csi2rx_ctx *ctx)
}
reg |= FIELD_PREP(SHIM_DMACNTX_SIZE, fmt->size);
+ reg |= FIELD_PREP(SHIM_DMACNTX_VC, ctx->vc);
writel(reg, csi->shim + SHIM_DMACNTX(ctx->idx));
@@ -868,6 +872,33 @@ static void ti_csi2rx_buffer_queue(struct vb2_buffer *vb)
}
}
+static int ti_csi2rx_get_vc(struct ti_csi2rx_ctx *ctx)
+{
+ struct ti_csi2rx_dev *csi = ctx->csi;
+ struct v4l2_mbus_frame_desc fd;
+ struct media_pad *pad;
+ int ret, i;
+
+ pad = media_entity_remote_pad_unique(&csi->subdev.entity, MEDIA_PAD_FL_SOURCE);
+ if (!pad)
+ return -ENODEV;
+
+ ret = v4l2_subdev_call(csi->source, pad, get_frame_desc, pad->index,
+ &fd);
+ if (ret)
+ return ret;
+
+ if (fd.type != V4L2_MBUS_FRAME_DESC_TYPE_CSI2)
+ return -EINVAL;
+
+ for (i = 0; i < fd.num_entries; i++) {
+ if (ctx->stream == fd.entry[i].stream)
+ return fd.entry[i].bus.csi2.vc;
+ }
+
+ return -ENODEV;
+}
+
static int ti_csi2rx_start_streaming(struct vb2_queue *vq, unsigned int count)
{
struct ti_csi2rx_ctx *ctx = vb2_get_drv_priv(vq);
@@ -888,6 +919,14 @@ static int ti_csi2rx_start_streaming(struct vb2_queue *vq, unsigned int count)
if (ret)
goto err;
+ ret = ti_csi2rx_get_vc(ctx);
+ if (ret == -ENOIOCTLCMD)
+ ctx->vc = 0;
+ else if (ret < 0)
+ goto err;
+ else
+ ctx->vc = ret;
+
ti_csi2rx_setup_shim(ctx);
ctx->sequence = 0;
--
2.43.0
next prev parent reply other threads:[~2024-02-22 11:33 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-22 11:31 [PATCH RFC 00/21] media: cadence,ti: CSI2RX Multistream Support Jai Luthra
2024-02-22 11:31 ` [PATCH RFC 01/21] media: ti: j721e-csi2rx: Fix races while restarting DMA Jai Luthra
2024-02-22 11:31 ` [PATCH RFC 02/21] media: cadence: csi2rx: configure DPHY before starting source stream Jai Luthra
2024-02-22 14:29 ` Julien Massot
2024-02-23 7:23 ` Jai Luthra
2024-02-23 2:46 ` 回复: " Changhuang Liang
2024-02-22 11:31 ` [PATCH RFC 03/21] media: cadence: csi2rx: Support runtime PM Jai Luthra
2024-03-22 9:26 ` 回复: " Changhuang Liang
2024-03-22 11:13 ` Jai Luthra
2024-02-22 11:31 ` [PATCH RFC 04/21] dt-bindings: media: ti,j721e-csi2rx-shim: Support 32 dma chans Jai Luthra
2024-02-22 12:25 ` Rob Herring
2024-02-23 7:44 ` Jai Luthra
2024-02-22 11:31 ` [PATCH RFC 05/21] media: ti: j721e-csi2rx: separate out device and context Jai Luthra
2024-02-22 11:31 ` [PATCH RFC 06/21] media: ti: j721e-csi2rx: prepare SHIM code for multiple contexts Jai Luthra
2024-02-22 11:31 ` [PATCH RFC 07/21] media: ti: j721e-csi2rx: allocate DMA channel based on context index Jai Luthra
2024-02-22 11:31 ` [PATCH RFC 08/21] media: ti: j721e-csi2rx: add a subdev for the core device Jai Luthra
2024-02-22 11:31 ` [PATCH RFC 09/21] SQUASH: media: ti: j721e-csi2rx: Fix link validation for multi-stream Jai Luthra
2024-02-22 11:31 ` [PATCH RFC 10/21] media: ti: j721e-csi2rx: get number of contexts from device tree Jai Luthra
2024-02-22 11:31 ` [PATCH RFC 11/21] media: cadence: csi2rx: add get_frame_desc wrapper Jai Luthra
2024-02-22 11:31 ` Jai Luthra [this message]
2024-02-22 11:31 ` [PATCH RFC 13/21] media: cadence: csi2rx: Use new enable stream APIs Jai Luthra
2024-02-22 11:31 ` [PATCH RFC 14/21] media: cadence: csi2rx: Enable stream-wise routing Jai Luthra
2024-02-22 11:31 ` [PATCH RFC 15/21] SQUASH: media: cadence: csi2rx: Enable per-stream controls Jai Luthra
2024-02-22 11:31 ` [PATCH RFC 16/21] SQUASH: media: cadence: csi2rx: Filter using MIPI virtual channels Jai Luthra
2024-02-22 11:31 ` [PATCH RFC 17/21] SQUASH: media: cadence: csi2rx: Filter streams in get_frame_desc Jai Luthra
2024-02-22 11:31 ` [PATCH RFC 18/21] media: ti: j721e-csi2rx: add multistream support Jai Luthra
2024-02-22 11:31 ` [PATCH RFC 19/21] SQUASH: media: ti: j721e-csi2rx: Enable per-stream controls Jai Luthra
2024-02-22 11:31 ` [PATCH RFC 20/21] SQUASH: media: ti: j721e-csi2rx: Assert pixel reset before stopping last stream Jai Luthra
2024-02-22 11:31 ` [PATCH RFC 21/21] media: ti: j721e-csi2rx: Submit all available buffers Jai Luthra
2024-02-23 2:53 ` 回复: [PATCH RFC 00/21] media: cadence,ti: CSI2RX Multistream Support Changhuang Liang
2024-02-23 7:49 ` Jai Luthra
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