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 03/21] media: cadence: csi2rx: Support runtime PM
Date: Thu, 22 Feb 2024 17:01:19 +0530 [thread overview]
Message-ID: <20240222-multistream-v1-3-1837ed916eeb@ti.com> (raw)
In-Reply-To: <20240222-multistream-v1-0-1837ed916eeb@ti.com>
From: Jayshri Pawar <jpawar@cadence.com>
Use runtime power management hooks to save power when CSI-RX is not in
use. Also stop/start any in-progress streams, which might happen during
a system suspend/resume cycle.
Signed-off-by: Jayshri Pawar <jpawar@cadence.com>
Co-developed-by: Jai Luthra <j-luthra@ti.com>
Signed-off-by: Jai Luthra <j-luthra@ti.com>
---
drivers/media/platform/cadence/cdns-csi2rx.c | 43 +++++++++++++++++++++++++++-
1 file changed, 42 insertions(+), 1 deletion(-)
diff --git a/drivers/media/platform/cadence/cdns-csi2rx.c b/drivers/media/platform/cadence/cdns-csi2rx.c
index 75e602c1d762..e19993ed351c 100644
--- a/drivers/media/platform/cadence/cdns-csi2rx.c
+++ b/drivers/media/platform/cadence/cdns-csi2rx.c
@@ -370,6 +370,12 @@ static int csi2rx_s_stream(struct v4l2_subdev *subdev, int enable)
struct csi2rx_priv *csi2rx = v4l2_subdev_to_csi2rx(subdev);
int ret = 0;
+ if (enable) {
+ ret = pm_runtime_resume_and_get(csi2rx->dev);
+ if (ret < 0)
+ return ret;
+ }
+
mutex_lock(&csi2rx->lock);
if (enable) {
@@ -379,8 +385,10 @@ static int csi2rx_s_stream(struct v4l2_subdev *subdev, int enable)
*/
if (!csi2rx->count) {
ret = csi2rx_start(csi2rx);
- if (ret)
+ if (ret) {
+ pm_runtime_put(csi2rx->dev);
goto out;
+ }
}
csi2rx->count++;
@@ -392,6 +400,8 @@ static int csi2rx_s_stream(struct v4l2_subdev *subdev, int enable)
*/
if (!csi2rx->count)
csi2rx_stop(csi2rx);
+
+ pm_runtime_put(csi2rx->dev);
}
out:
@@ -665,6 +675,29 @@ static int csi2rx_parse_dt(struct csi2rx_priv *csi2rx)
return ret;
}
+static int csi2rx_suspend(struct device *dev)
+{
+ struct csi2rx_priv *csi2rx = dev_get_drvdata(dev);
+
+ mutex_lock(&csi2rx->lock);
+ if (csi2rx->count)
+ csi2rx_stop(csi2rx);
+ mutex_unlock(&csi2rx->lock);
+
+ return 0;
+}
+
+static int csi2rx_resume(struct device *dev)
+{
+ struct csi2rx_priv *csi2rx = dev_get_drvdata(dev);
+
+ mutex_lock(&csi2rx->lock);
+ if (csi2rx->count)
+ csi2rx_start(csi2rx);
+ mutex_unlock(&csi2rx->lock);
+ return 0;
+}
+
static int csi2rx_probe(struct platform_device *pdev)
{
struct csi2rx_priv *csi2rx;
@@ -711,6 +744,7 @@ static int csi2rx_probe(struct platform_device *pdev)
if (ret)
goto err_cleanup;
+ pm_runtime_enable(csi2rx->dev);
ret = v4l2_async_register_subdev(&csi2rx->subdev);
if (ret < 0)
goto err_free_state;
@@ -725,6 +759,7 @@ static int csi2rx_probe(struct platform_device *pdev)
err_free_state:
v4l2_subdev_cleanup(&csi2rx->subdev);
+ pm_runtime_disable(csi2rx->dev);
err_cleanup:
v4l2_async_nf_unregister(&csi2rx->notifier);
v4l2_async_nf_cleanup(&csi2rx->notifier);
@@ -743,9 +778,14 @@ static void csi2rx_remove(struct platform_device *pdev)
v4l2_async_unregister_subdev(&csi2rx->subdev);
v4l2_subdev_cleanup(&csi2rx->subdev);
media_entity_cleanup(&csi2rx->subdev.entity);
+ pm_runtime_disable(csi2rx->dev);
kfree(csi2rx);
}
+static const struct dev_pm_ops csi2rx_pm_ops = {
+ SET_RUNTIME_PM_OPS(csi2rx_suspend, csi2rx_resume, NULL)
+};
+
static const struct of_device_id csi2rx_of_table[] = {
{ .compatible = "starfive,jh7110-csi2rx" },
{ .compatible = "cdns,csi2rx" },
@@ -760,6 +800,7 @@ static struct platform_driver csi2rx_driver = {
.driver = {
.name = "cdns-csi2rx",
.of_match_table = csi2rx_of_table,
+ .pm = &csi2rx_pm_ops,
},
};
module_platform_driver(csi2rx_driver);
--
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 ` Jai Luthra [this message]
2024-03-22 9:26 ` 回复: [PATCH RFC 03/21] media: cadence: csi2rx: Support runtime PM 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 ` [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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