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 13/21] media: cadence: csi2rx: Use new enable stream APIs
Date: Thu, 22 Feb 2024 17:01:29 +0530 [thread overview]
Message-ID: <20240222-multistream-v1-13-1837ed916eeb@ti.com> (raw)
In-Reply-To: <20240222-multistream-v1-0-1837ed916eeb@ti.com>
The enable_streams() API in v4l2 supports passing a bitmask to enable
each pad/stream combination individually on any media subdev instead of
doing s_stream(1) to start all streams on the subdev at once.
This API is implemented by ds90ub960 driver (FPDLink deser) and thus the
caller (cdns-csi2x) is required to use it. For now we only enable
stream0.
Signed-off-by: Jai Luthra <j-luthra@ti.com>
---
drivers/media/platform/cadence/cdns-csi2rx.c | 18 ++++++++++++++++--
1 file changed, 16 insertions(+), 2 deletions(-)
diff --git a/drivers/media/platform/cadence/cdns-csi2rx.c b/drivers/media/platform/cadence/cdns-csi2rx.c
index 989924dba9a9..bac341881e41 100644
--- a/drivers/media/platform/cadence/cdns-csi2rx.c
+++ b/drivers/media/platform/cadence/cdns-csi2rx.c
@@ -226,10 +226,18 @@ static int csi2rx_configure_ext_dphy(struct csi2rx_priv *csi2rx)
static int csi2rx_start(struct csi2rx_priv *csi2rx)
{
unsigned int i;
+ struct media_pad *remote_pad;
unsigned long lanes_used = 0;
u32 reg;
int ret;
+ remote_pad = media_pad_remote_pad_first(&csi2rx->pads[CSI2RX_PAD_SINK]);
+ if (!remote_pad) {
+ dev_err(csi2rx->dev,
+ "Failed to find connected source\n");
+ return -ENODEV;
+ }
+
ret = clk_prepare_enable(csi2rx->p_clk);
if (ret)
return ret;
@@ -313,7 +321,8 @@ static int csi2rx_start(struct csi2rx_priv *csi2rx)
reset_control_deassert(csi2rx->sys_rst);
- ret = v4l2_subdev_call(csi2rx->source_subdev, video, s_stream, true);
+ ret = v4l2_subdev_enable_streams(csi2rx->source_subdev,
+ remote_pad->index, BIT(0));
if (ret)
goto err_disable_sysclk;
@@ -341,6 +350,7 @@ static int csi2rx_start(struct csi2rx_priv *csi2rx)
static void csi2rx_stop(struct csi2rx_priv *csi2rx)
{
+ struct media_pad *remote_pad;
unsigned int i;
u32 val;
int ret;
@@ -369,8 +379,12 @@ static void csi2rx_stop(struct csi2rx_priv *csi2rx)
reset_control_assert(csi2rx->p_rst);
clk_disable_unprepare(csi2rx->p_clk);
- if (v4l2_subdev_call(csi2rx->source_subdev, video, s_stream, false))
+ remote_pad = media_pad_remote_pad_first(&csi2rx->pads[CSI2RX_PAD_SINK]);
+ if (!remote_pad ||
+ v4l2_subdev_disable_streams(csi2rx->source_subdev,
+ remote_pad->index, BIT(0))) {
dev_warn(csi2rx->dev, "Couldn't disable our subdev\n");
+ }
if (csi2rx->dphy) {
writel(0, csi2rx->base + CSI2RX_DPHY_LANE_CTRL_REG);
--
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 ` [PATCH RFC 12/21] media: ti: j721e-csi2rx: add support for processing virtual channels Jai Luthra
2024-02-22 11:31 ` Jai Luthra [this message]
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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