From: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
To: Jacopo Mondi <jacopo@jmondi.org>,
mchehab@kernel.org, sakari.ailus@linux.intel.com,
hverkuil@xs4all.nl, laurent.pinchart@ideasonboard.com,
roman.kovalivskyi@globallogic.com,
dave.stevenson@raspberrypi.org, naush@raspberrypi.com
Cc: mrodin@de.adit-jv.com, hugues.fruchet@st.com, mripard@kernel.org,
aford173@gmail.com, sudipi@jp.adit-jv.com,
andrew_gabbasov@mentor.com, erosca@de.adit-jv.com,
linux-media@vger.kernel.org, libcamera-devel@lists.libcamera.org,
dafna Hirschfeld <dafna3@gmail.com>
Subject: Re: [PATCH 20/25] media: ov5647: Program mode only if it has changed
Date: Mon, 29 Jun 2020 19:48:16 +0200 [thread overview]
Message-ID: <80139e40-914f-c547-922f-91fe3f611202@collabora.com> (raw)
In-Reply-To: <20200623165550.45835-1-jacopo@jmondi.org>
On 23.06.20 18:55, Jacopo Mondi wrote:
> Store in the driver structure a pointer to the currently applied mode
> and program a new one at s_stream(1) time only if it has changed.
Hi,
I think this can be more readably implemented with a 'is_streaming' boolean
field.
Thanks,
Dafna
>
> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
> ---
> drivers/media/i2c/ov5647.c | 16 +++++++++++++++-
> 1 file changed, 15 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/media/i2c/ov5647.c b/drivers/media/i2c/ov5647.c
> index 39e320f321bd8..ac114269e1c73 100644
> --- a/drivers/media/i2c/ov5647.c
> +++ b/drivers/media/i2c/ov5647.c
> @@ -96,6 +96,7 @@ struct ov5647 {
> bool clock_ncont;
> struct v4l2_ctrl_handler ctrls;
> struct ov5647_mode *mode;
> + struct ov5647_mode *current_mode;
> };
>
> static inline struct ov5647 *to_sensor(struct v4l2_subdev *sd)
> @@ -750,9 +751,13 @@ static int ov5647_set_virtual_channel(struct v4l2_subdev *sd, int channel)
> static int ov5647_set_mode(struct v4l2_subdev *sd)
> {
> struct i2c_client *client = v4l2_get_subdevdata(sd);
> + struct ov5647 *sensor = to_sensor(sd);
> u8 resetval, rdval;
> int ret;
>
> + if (sensor->mode == sensor->current_mode)
> + return 0;
> +
> ret = ov5647_read(sd, OV5647_SW_STANDBY, &rdval);
> if (ret < 0)
> return ret;
> @@ -778,6 +783,8 @@ static int ov5647_set_mode(struct v4l2_subdev *sd)
> return ret;
> }
>
> + sensor->current_mode = sensor->mode;
> +
> return 0;
> }
>
> @@ -816,6 +823,7 @@ static int ov5647_stream_on(struct v4l2_subdev *sd)
>
> static int ov5647_stream_off(struct v4l2_subdev *sd)
> {
> + struct ov5647 *sensor = to_sensor(sd);
> int ret;
>
> ret = ov5647_write(sd, OV5647_REG_MIPI_CTRL00, MIPI_CTRL00_CLOCK_LANE_GATE |
> @@ -827,7 +835,13 @@ static int ov5647_stream_off(struct v4l2_subdev *sd)
> if (ret < 0)
> return ret;
>
> - return ov5647_write(sd, OV5640_REG_PAD_OUT, 0x01);
> + ret = ov5647_write(sd, OV5640_REG_PAD_OUT, 0x01);
> + if (ret < 0)
> + return ret;
> +
> + sensor->current_mode = NULL;
> +
> + return 0;
> }
>
> static int set_sw_standby(struct v4l2_subdev *sd, bool standby)
>
next prev parent reply other threads:[~2020-06-29 19:07 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-23 10:07 [PATCH 00/25] media: ov5647: Support RaspberryPi Camera Module v1 Jacopo Mondi
2020-06-23 10:07 ` [PATCH 01/25] dt-bindings: media: ov5647: Document pwdn-gpios Jacopo Mondi
2020-06-23 10:07 ` [PATCH 02/25] dt-bindings: media: ov5647: Document clock-noncontinuous Jacopo Mondi
2020-06-23 10:07 ` [PATCH 03/25] media: ov5647: Add support for PWDN GPIO Jacopo Mondi
2020-07-09 20:04 ` [libcamera-devel] " Dafna Hirschfeld
2020-07-14 12:45 ` Jacopo Mondi
2020-06-23 10:07 ` [PATCH 04/25] media: ov5647: Add support for non-continuous clock mode Jacopo Mondi
2020-06-23 10:07 ` [PATCH 05/25] media: ov5647: Add set_fmt and get_fmt calls Jacopo Mondi
2020-06-23 10:07 ` [PATCH 06/25] media: ov5647: Fix format initialization Jacopo Mondi
2020-06-23 10:07 ` [PATCH 07/25] media: ov5647: Fix style issues Jacopo Mondi
2020-06-23 10:07 ` [PATCH 08/25] media: ov5647: Replace license with SPDX identifier Jacopo Mondi
2020-06-23 10:07 ` [PATCH 09/25] media: ov5647: Fix return value from read/write Jacopo Mondi
2020-06-23 10:08 ` [PATCH 10/25] media: ov5647: Program mode at s_stream(1) time Jacopo Mondi
2020-06-23 16:42 ` [PATCH 11/25] media: ov5647: Implement enum_frame_size() Jacopo Mondi
2020-08-18 7:33 ` Sakari Ailus
2020-08-18 7:38 ` Sakari Ailus
2020-06-23 16:42 ` [PATCH 12/25] media: ov5647: Protect s_stream() with mutex Jacopo Mondi
2020-06-23 16:42 ` [PATCH 13/25] media: ov5647: Support gain, exposure and AWB controls Jacopo Mondi
2020-06-23 16:42 ` [PATCH 14/25] media: ov5647: Rationalize driver structure name Jacopo Mondi
2020-06-23 16:42 ` [PATCH 15/25] media: ov5647: Break out format handling Jacopo Mondi
2020-07-31 11:44 ` Sakari Ailus
2020-06-23 16:49 ` [PATCH 16/25] media: ov5647: Add support for get_selection() Jacopo Mondi
2020-07-09 19:56 ` [libcamera-devel] " Dafna Hirschfeld
2020-06-23 16:49 ` [PATCH 17/25] media: ov5647: Rename SBGGR8 VGA mode Jacopo Mondi
2020-06-23 16:49 ` [PATCH 18/25] media: ov5647: Add SGGBR10_1X10 modes Jacopo Mondi
2020-06-23 16:49 ` [PATCH 19/25] media: ov5647: Implement set_fmt pad operation Jacopo Mondi
2020-06-29 16:54 ` [libcamera-devel] " Dafna Hirschfeld
2020-06-30 10:13 ` Jacopo Mondi
2020-06-30 11:09 ` Dafna Hirschfeld
2020-06-23 16:55 ` [PATCH 20/25] media: ov5647: Program mode only if it has changed Jacopo Mondi
2020-06-29 17:48 ` Dafna Hirschfeld [this message]
2020-06-30 7:43 ` Jacopo Mondi
2020-06-30 9:32 ` Dafna Hirschfeld
2020-06-30 10:06 ` Jacopo Mondi
2020-06-30 10:56 ` Dafna Hirschfeld
2020-06-30 12:05 ` Jacopo Mondi
2020-06-30 13:01 ` Dafna Hirschfeld
2020-06-30 14:53 ` [libcamera-devel] " Dave Stevenson
2020-06-30 15:11 ` Dafna Hirschfeld
2020-07-01 7:25 ` Laurent Pinchart
2020-07-03 12:21 ` Jacopo Mondi
2020-07-03 16:33 ` Laurent Pinchart
2020-06-23 16:55 ` [PATCH 21/25] media: ov5647: Set V4L2_SUBDEV_FL_HAS_EVENTS flag Jacopo Mondi
2020-06-23 16:55 ` [PATCH 22/25] media: ov5647: Support V4L2_CID_PIXEL_RATE Jacopo Mondi
2020-06-29 17:01 ` [libcamera-devel] " Dafna Hirschfeld
2020-06-29 21:25 ` Dave Stevenson
2020-06-30 15:13 ` Dave Stevenson
2020-07-01 7:21 ` Laurent Pinchart
2020-06-23 16:55 ` [PATCH 23/25] media: ov5647: Support V4L2_CID_HBLANK control Jacopo Mondi
2020-06-23 16:55 ` [PATCH 24/25] media: ov5647: Support V4L2_CID_VBLANK control Jacopo Mondi
2020-06-23 16:55 ` [PATCH 25/25] media: ov5647: Advertise the correct exposure range Jacopo Mondi
2020-06-29 17:33 ` [PATCH 00/25] media: ov5647: Support RaspberryPi Camera Module v1 Dafna Hirschfeld
2020-06-29 18:08 ` Dafna Hirschfeld
2020-07-10 15:59 ` Dafna Hirschfeld
2020-07-14 12:48 ` Jacopo Mondi
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