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Subject: media: atomisp: Add atomisp_select_input() helper
Author: Hans de Goede <hdego...@redhat.com>
Date: Thu Apr 11 18:56:47 2024 +0100
When switching input/sensor the s_power() callback must be called
for old sensor drivers to power on the new sensor and power off
the previous sensor.
atomisp_s_input() already does this but atomisp_link_setup()
did not do this.
Add a new atomisp_select_input() helper which does this and use this
in both atomisp_s_input() and atomisp_link_setup() for consistent
behavior.
Also make atomisp_link_setup() turn the sensor back off when
a link gets disabled.
Reviewed-by: Andy Shevchenko <a...@kernel.org>
Signed-off-by: Hans de Goede <hdego...@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mche...@kernel.org>
drivers/staging/media/atomisp/pci/atomisp_cmd.c | 19 +++++++++++++++++++
drivers/staging/media/atomisp/pci/atomisp_cmd.h | 3 +++
drivers/staging/media/atomisp/pci/atomisp_ioctl.c | 13 +------------
drivers/staging/media/atomisp/pci/atomisp_subdev.c | 15 +++++++++------
4 files changed, 32 insertions(+), 18 deletions(-)
---
diff --git a/drivers/staging/media/atomisp/pci/atomisp_cmd.c
b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
index 83a15a2d358e..6c93bab17955 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_cmd.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
@@ -3739,6 +3739,25 @@ int atomisp_s_sensor_power(struct atomisp_device *isp,
unsigned int input, bool
return 0;
}
+int atomisp_select_input(struct atomisp_device *isp, unsigned int input)
+{
+ unsigned int input_orig = isp->asd.input_curr;
+ int ret;
+
+ /* Power on new sensor */
+ ret = atomisp_s_sensor_power(isp, input, 1);
+ if (ret)
+ return ret;
+
+ isp->asd.input_curr = input;
+
+ /* Power off previous sensor */
+ if (input != input_orig)
+ atomisp_s_sensor_power(isp, input_orig, 0);
+
+ return 0;
+}
+
static int atomisp_set_sensor_crop_and_fmt(struct atomisp_device *isp,
struct v4l2_mbus_framefmt *ffmt,
int which)
diff --git a/drivers/staging/media/atomisp/pci/atomisp_cmd.h
b/drivers/staging/media/atomisp/pci/atomisp_cmd.h
index 2676236ee015..f302763b7b2f 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_cmd.h
+++ b/drivers/staging/media/atomisp/pci/atomisp_cmd.h
@@ -244,6 +244,9 @@ void atomisp_get_padding(struct atomisp_device *isp, u32
width, u32 height,
/* Set sensor power (no-op if already on/off) */
int atomisp_s_sensor_power(struct atomisp_device *isp, unsigned int input,
bool on);
+/* Select which sensor to use, must be called with a valid input */
+int atomisp_select_input(struct atomisp_device *isp, unsigned int input);
+
/* This function looks up the closest available resolution. */
int atomisp_try_fmt(struct atomisp_device *isp, struct v4l2_pix_format *f,
const struct atomisp_format_bridge **fmt_ret,
diff --git a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
index be1f3f2ee63e..b3ad53449cb8 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
@@ -449,7 +449,6 @@ static int atomisp_s_input(struct file *file, void *fh,
unsigned int input)
struct video_device *vdev = video_devdata(file);
struct atomisp_device *isp = video_get_drvdata(vdev);
struct atomisp_video_pipe *pipe = atomisp_to_video_pipe(vdev);
- struct atomisp_sub_device *asd = pipe->asd;
struct v4l2_subdev *camera = NULL;
int ret;
@@ -468,17 +467,7 @@ static int atomisp_s_input(struct file *file, void *fh,
unsigned int input)
return -EINVAL;
}
- /* power off the current owned sensor, as it is not used this time */
- if (input != isp->asd.input_curr)
- atomisp_s_sensor_power(isp, isp->asd.input_curr, 0);
-
- /* powe on the new sensor */
- ret = atomisp_s_sensor_power(isp, input, 1);
- if (ret)
- return ret;
-
- asd->input_curr = input;
- return 0;
+ return atomisp_select_input(isp, input);
}
/*
diff --git a/drivers/staging/media/atomisp/pci/atomisp_subdev.c
b/drivers/staging/media/atomisp/pci/atomisp_subdev.c
index c36aae69d6f7..aabffd6a424d 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_subdev.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_subdev.c
@@ -663,9 +663,6 @@ static int atomisp_link_setup(struct media_entity *entity,
return -EINVAL;
}
- /* Ignore disables, input_curr should only be updated on enables */
- if (!(flags & MEDIA_LNK_FL_ENABLED))
- return 0;
for (i = 0; i < isp->input_cnt; i++) {
if (isp->inputs[i].camera == isp->sensor_subdevs[csi_idx])
@@ -679,11 +676,17 @@ static int atomisp_link_setup(struct media_entity *entity,
mutex_lock(&isp->mutex);
ret = atomisp_pipe_check(&asd->video_out, true);
- if (ret == 0)
- asd->input_curr = i;
mutex_unlock(&isp->mutex);
+ if (ret)
+ return ret;
- return ret;
+ /* Turn off the sensor on link disable */
+ if (!(flags & MEDIA_LNK_FL_ENABLED)) {
+ atomisp_s_sensor_power(isp, i, 0);
+ return 0;
+ }
+
+ return atomisp_select_input(isp, i);
}
static const struct media_entity_operations isp_subdev_media_ops = {
