From: Sowjanya Komatineni <skomatineni@nvidia.com>
To: <skomatineni@nvidia.com>, <thierry.reding@gmail.com>,
<jonathanh@nvidia.com>, <frankc@nvidia.com>, <hverkuil@xs4all.nl>,
<sakari.ailus@iki.fi>, <robh+dt@kernel.org>,
<helen.koike@collabora.com>
Cc: <digetx@gmail.com>, <gregkh@linuxfoundation.org>,
<linux-media@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-tegra@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: [PATCH v7 05/10] media: tegra-video: Separate CSI stream enable and disable implementations
Date: Fri, 31 Jul 2020 14:32:19 -0700 [thread overview]
Message-ID: <1596231144-12554-6-git-send-email-skomatineni@nvidia.com> (raw)
In-Reply-To: <1596231144-12554-1-git-send-email-skomatineni@nvidia.com>
This patch separates implementation of CSI stream enable and disable
into separate functions for readability.
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
---
drivers/staging/media/tegra-video/csi.c | 51 ++++++++++++++++++++++-----------
1 file changed, 35 insertions(+), 16 deletions(-)
diff --git a/drivers/staging/media/tegra-video/csi.c b/drivers/staging/media/tegra-video/csi.c
index fb667df..cfe6187 100644
--- a/drivers/staging/media/tegra-video/csi.c
+++ b/drivers/staging/media/tegra-video/csi.c
@@ -232,34 +232,53 @@ static int tegra_csi_g_frame_interval(struct v4l2_subdev *subdev,
return 0;
}
-static int tegra_csi_s_stream(struct v4l2_subdev *subdev, int enable)
+static int tegra_csi_enable_stream(struct v4l2_subdev *subdev)
{
struct tegra_vi_channel *chan = v4l2_get_subdev_hostdata(subdev);
struct tegra_csi_channel *csi_chan = to_csi_chan(subdev);
struct tegra_csi *csi = csi_chan->csi;
- int ret = 0;
+ int ret;
+
+ ret = pm_runtime_get_sync(csi->dev);
+ if (ret < 0) {
+ dev_err(csi->dev, "failed to get runtime PM: %d\n", ret);
+ pm_runtime_put_noidle(csi->dev);
+ return ret;
+ }
csi_chan->pg_mode = chan->pg_mode;
- if (enable) {
- ret = pm_runtime_get_sync(csi->dev);
- if (ret < 0) {
- dev_err(csi->dev,
- "failed to get runtime PM: %d\n", ret);
- pm_runtime_put_noidle(csi->dev);
- return ret;
- }
+ ret = csi->ops->csi_start_streaming(csi_chan);
+ if (ret < 0)
+ goto rpm_put;
- ret = csi->ops->csi_start_streaming(csi_chan);
- if (ret < 0)
- goto rpm_put;
+ return 0;
- return 0;
- }
+rpm_put:
+ pm_runtime_put(csi->dev);
+ return ret;
+}
+
+static int tegra_csi_disable_stream(struct v4l2_subdev *subdev)
+{
+ struct tegra_csi_channel *csi_chan = to_csi_chan(subdev);
+ struct tegra_csi *csi = csi_chan->csi;
csi->ops->csi_stop_streaming(csi_chan);
-rpm_put:
pm_runtime_put(csi->dev);
+
+ return 0;
+}
+
+static int tegra_csi_s_stream(struct v4l2_subdev *subdev, int enable)
+{
+ int ret;
+
+ if (enable)
+ ret = tegra_csi_enable_stream(subdev);
+ else
+ ret = tegra_csi_disable_stream(subdev);
+
return ret;
}
--
2.7.4
next prev parent reply other threads:[~2020-07-31 21:33 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-31 21:32 [PATCH v7 00/10] Support for Tegra video capture from external sensor Sowjanya Komatineni
2020-07-31 21:32 ` [PATCH v7 01/10] media: tegra-video: Fix channel format alignment Sowjanya Komatineni
2020-07-31 21:32 ` [PATCH v7 02/10] media: tegra-video: Enable TPG based on kernel config Sowjanya Komatineni
2020-07-31 21:32 ` [PATCH v7 03/10] media: tegra-video: Update format lookup to offset based Sowjanya Komatineni
2020-07-31 21:32 ` [PATCH v7 04/10] dt-bindings: tegra: Update VI and CSI bindings with port info Sowjanya Komatineni
2020-07-31 21:32 ` Sowjanya Komatineni [this message]
2020-07-31 21:32 ` [PATCH v7 06/10] media: tegra-video: Add support for external sensor capture Sowjanya Komatineni
2020-08-01 0:59 ` Dmitry Osipenko
2020-07-31 21:32 ` [PATCH v7 07/10] media: tegra-video: Add support for selection ioctl ops Sowjanya Komatineni
2020-07-31 21:32 ` [PATCH v7 08/10] gpu: host1x: mipi: Keep MIPI clock enabled till calibration is done Sowjanya Komatineni
2020-07-31 21:32 ` [PATCH v7 09/10] media: tegra-video: Add CSI MIPI pads calibration Sowjanya Komatineni
2020-08-01 1:04 ` Dmitry Osipenko
2020-07-31 21:32 ` [PATCH v7 10/10] media: tegra-video: Compute settle times based on the clock rate Sowjanya Komatineni
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