Hello Hans (and everybody else)
On 07/06/2023 17:46, Hans de Goede wrote:
ov2680_vflip_disable() / ov2680_hflip_disable() pass BIT(0) instead of
0 as value to ov2680_mod_reg().
While fixing this also:
1. Stop having separate enable/disable functions for hflip / vflip
2. Move the is_streaming check, which is unique to hflip / vflip
into the ov2680_set_?flip() functions.
I think the code in the patch is good, but I wonder about the right way to deal with the changed
pixel ordering following a flip/mirror. None of the other Omnivision sensor drivers I've looked at
disallow a flip/mirror whilst streaming, but of course doing so wrecks the colours. I don't think
that there's any reason we couldn't make the equivalent calculation to ov2680_set_bayer_order()
within libcamera though and configure the ipu3-imgu appropriately, and so properly support a
flip-whilst-streaming...but quite possibly I'm missing something. So I'm leaning towards "let's just
drop the is_streaming check", but I'm interested in what everyone else thinks.
for a nice code cleanup.
Fixes: 3ee47cad3e69 ("media: ov2680: Add Omnivision OV2680 sensor driver")
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
drivers/media/i2c/ov2680.c | 48 +++++++++-----------------------------
1 file changed, 11 insertions(+), 37 deletions(-)
diff --git a/drivers/media/i2c/ov2680.c b/drivers/media/i2c/ov2680.c
index 9a9c90c8a949..c1b23c5b7818 100644
--- a/drivers/media/i2c/ov2680.c
+++ b/drivers/media/i2c/ov2680.c
@@ -328,11 +328,14 @@ static void ov2680_set_bayer_order(struct ov2680_dev *sensor)
sensor->fmt.code = ov2680_hv_flip_bayer_order[hv_flip];
}
-static int ov2680_vflip_enable(struct ov2680_dev *sensor)
+static int ov2680_set_vflip(struct ov2680_dev *sensor, s32 val)
{
int ret;
- ret = ov2680_mod_reg(sensor, OV2680_REG_FORMAT1, BIT(2), BIT(2));
+ if (sensor->is_streaming)
+ return -EBUSY;
+
+ ret = ov2680_mod_reg(sensor, OV2680_REG_FORMAT1, BIT(2), val ? BIT(2) : 0);
if (ret < 0)
return ret;
@@ -340,33 +343,14 @@ static int ov2680_vflip_enable(struct ov2680_dev *sensor)
return 0;
}
-static int ov2680_vflip_disable(struct ov2680_dev *sensor)
+static int ov2680_set_hflip(struct ov2680_dev *sensor, s32 val)
{
int ret;
- ret = ov2680_mod_reg(sensor, OV2680_REG_FORMAT1, BIT(2), BIT(0));
- if (ret < 0)
- return ret;
+ if (sensor->is_streaming)
+ return -EBUSY;
- return ov2680_bayer_order(sensor);
-}
-
-static int ov2680_hflip_enable(struct ov2680_dev *sensor)
-{
- int ret;
-
- ret = ov2680_mod_reg(sensor, OV2680_REG_FORMAT2, BIT(2), BIT(2));
- if (ret < 0)
- return ret;
-
- return ov2680_bayer_order(sensor);
-}
-
-static int ov2680_hflip_disable(struct ov2680_dev *sensor)
-{
- int ret;
-
- ret = ov2680_mod_reg(sensor, OV2680_REG_FORMAT2, BIT(2), BIT(0));
+ ret = ov2680_mod_reg(sensor, OV2680_REG_FORMAT2, BIT(2), val ? BIT(2) : 0);
if (ret < 0)
return ret;
@@ -719,19 +703,9 @@ static int ov2680_s_ctrl(struct v4l2_ctrl *ctrl)
case V4L2_CID_EXPOSURE:
return ov2680_exposure_set(sensor, ctrl->val);
case V4L2_CID_VFLIP:
- if (sensor->is_streaming)
- return -EBUSY;
- if (ctrl->val)
- return ov2680_vflip_enable(sensor);
- else
- return ov2680_vflip_disable(sensor);
+ return ov2680_set_vflip(sensor, ctrl->val);
case V4L2_CID_HFLIP:
- if (sensor->is_streaming)
- return -EBUSY;
- if (ctrl->val)
- return ov2680_hflip_enable(sensor);
- else
- return ov2680_hflip_disable(sensor);
+ return ov2680_set_hflip(sensor, ctrl->val);
case V4L2_CID_TEST_PATTERN:
return ov2680_test_pattern_set(sensor, ctrl->val);
default:
